From: Guus Sliepen Date: Thu, 31 Dec 2009 12:19:13 +0000 (+0100) Subject: Move source from lib/ to src/. X-Git-Tag: import-tinc-1.1~559 X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=35b1c25093a478d20e01f0ff391c9cdc9c41c2b8;p=meshlink Move source from lib/ to src/. The utility functions in the lib/ directory do not really form a library. Also, now that we build two binaries, tincctl does not need everything that was in libvpn.a, so it is wasteful to link to it. --- diff --git a/lib/Makefile.am b/lib/Makefile.am index c96e1760..96d7a6ab 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -1,14 +1 @@ ## Process this file with automake to produce Makefile.in - -noinst_LIBRARIES = libvpn.a - -INCLUDES = @INCLUDES@ -I. -I$(top_builddir) - -libvpn_a_SOURCES = xmalloc.c utils.c getopt.c getopt1.c list.c splay_tree.c dropin.c fake-getaddrinfo.c fake-getnameinfo.c - -libvpn_a_LIBADD = @LIBOBJS@ @ALLOCA@ -libvpn_a_DEPENDENCIES = $(libvpn_a_LIBADD) - -noinst_HEADERS = xalloc.h utils.h getopt.h list.h splay_tree.h dropin.h fake-getaddrinfo.h fake-getnameinfo.h fake-gai-errnos.h ipv6.h ipv4.h ethernet.h - -EXTRA_DIST = diff --git a/lib/alloca.c b/lib/alloca.c deleted file mode 100644 index 10e5d65f..00000000 --- a/lib/alloca.c +++ /dev/null @@ -1,494 +0,0 @@ -/* alloca.c -- allocate automatically reclaimed memory - (Mostly) portable public-domain implementation -- D A Gwyn - - This implementation of the PWB library alloca function, - which is used to allocate space off the run-time stack so - that it is automatically reclaimed upon procedure exit, - was inspired by discussions with J. Q. Johnson of Cornell. - J.Otto Tennant contributed the Cray support. - - There are some preprocessor constants that can - be defined when compiling for your specific system, for - improved efficiency; however, the defaults should be okay. - - The general concept of this implementation is to keep - track of all alloca-allocated blocks, and reclaim any - that are found to be deeper in the stack than the current - invocation. This heuristic does not reclaim storage as - soon as it becomes invalid, but it will do so eventually. - - As a special case, alloca(0) reclaims storage without - allocating any. It is a good idea to use alloca(0) in - your main control loop, etc. to force garbage collection. */ - -#ifdef HAVE_CONFIG_H -# include -#endif - -#ifdef emacs -# include "blockinput.h" -#endif - -/* If compiling with GCC 2, this file's not needed. */ -#if !defined (__GNUC__) || __GNUC__ < 2 - -/* If someone has defined alloca as a macro, - there must be some other way alloca is supposed to work. */ -# ifndef alloca - -# ifdef emacs -# ifdef static -/* actually, only want this if static is defined as "" - -- this is for usg, in which emacs must undefine static - in order to make unexec workable - */ -# ifndef STACK_DIRECTION -you -lose --- must know STACK_DIRECTION at compile-time -# endif /* STACK_DIRECTION undefined */ -# endif /* static */ -# endif /* emacs */ - -/* If your stack is a linked list of frames, you have to - provide an "address metric" ADDRESS_FUNCTION macro. */ - -# if defined (CRAY) && defined (CRAY_STACKSEG_END) -long i00afunc (); -# define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg)) -# else -# define ADDRESS_FUNCTION(arg) &(arg) -# endif - -# if __STDC__ -typedef void *pointer; -# else -typedef char *pointer; -# endif - -# ifndef NULL -# define NULL 0 -# endif - -/* Different portions of Emacs need to call different versions of - malloc. The Emacs executable needs alloca to call xmalloc, because - ordinary malloc isn't protected from input signals. On the other - hand, the utilities in lib-src need alloca to call malloc; some of - them are very simple, and don't have an xmalloc routine. - - Non-Emacs programs expect this to call xmalloc. - - Callers below should use malloc. */ - -# ifndef emacs -# define malloc xmalloc -# endif -extern pointer malloc (); - -/* Define STACK_DIRECTION if you know the direction of stack - growth for your system; otherwise it will be automatically - deduced at run-time. - - STACK_DIRECTION > 0 => grows toward higher addresses - STACK_DIRECTION < 0 => grows toward lower addresses - STACK_DIRECTION = 0 => direction of growth unknown */ - -# ifndef STACK_DIRECTION -# define STACK_DIRECTION 0 /* Direction unknown. */ -# endif - -# if STACK_DIRECTION != 0 - -# define STACK_DIR STACK_DIRECTION /* Known at compile-time. */ - -# else /* STACK_DIRECTION == 0; need run-time code. */ - -static int stack_dir; /* 1 or -1 once known. */ -# define STACK_DIR stack_dir - -static void -find_stack_direction () -{ - static char *addr = NULL; /* Address of first `dummy', once known. */ - auto char dummy; /* To get stack address. */ - - if (addr == NULL) - { /* Initial entry. */ - addr = ADDRESS_FUNCTION (dummy); - - find_stack_direction (); /* Recurse once. */ - } - else - { - /* Second entry. */ - if (ADDRESS_FUNCTION (dummy) > addr) - stack_dir = 1; /* Stack grew upward. */ - else - stack_dir = -1; /* Stack grew downward. */ - } -} - -# endif /* STACK_DIRECTION == 0 */ - -/* An "alloca header" is used to: - (a) chain together all alloca'ed blocks; - (b) keep track of stack depth. - - It is very important that sizeof(header) agree with malloc - alignment chunk size. The following default should work okay. */ - -# ifndef ALIGN_SIZE -# define ALIGN_SIZE sizeof(double) -# endif - -typedef union hdr -{ - char align[ALIGN_SIZE]; /* To force sizeof(header). */ - struct - { - union hdr *next; /* For chaining headers. */ - char *deep; /* For stack depth measure. */ - } h; -} header; - -static header *last_alloca_header = NULL; /* -> last alloca header. */ - -/* Return a pointer to at least SIZE bytes of storage, - which will be automatically reclaimed upon exit from - the procedure that called alloca. Originally, this space - was supposed to be taken from the current stack frame of the - caller, but that method cannot be made to work for some - implementations of C, for example under Gould's UTX/32. */ - -pointer -alloca (size) - unsigned size; -{ - auto char probe; /* Probes stack depth: */ - register char *depth = ADDRESS_FUNCTION (probe); - -# if STACK_DIRECTION == 0 - if (STACK_DIR == 0) /* Unknown growth direction. */ - find_stack_direction (); -# endif - - /* Reclaim garbage, defined as all alloca'd storage that - was allocated from deeper in the stack than currently. */ - - { - register header *hp; /* Traverses linked list. */ - -# ifdef emacs - BLOCK_INPUT; -# endif - - for (hp = last_alloca_header; hp != NULL;) - if ((STACK_DIR > 0 && hp->h.deep > depth) - || (STACK_DIR < 0 && hp->h.deep < depth)) - { - register header *np = hp->h.next; - - free ((pointer) hp); /* Collect garbage. */ - - hp = np; /* -> next header. */ - } - else - break; /* Rest are not deeper. */ - - last_alloca_header = hp; /* -> last valid storage. */ - -# ifdef emacs - UNBLOCK_INPUT; -# endif - } - - if (size == 0) - return NULL; /* No allocation required. */ - - /* Allocate combined header + user data storage. */ - - { - register pointer new = malloc (sizeof (header) + size); - /* Address of header. */ - - ((header *) new)->h.next = last_alloca_header; - ((header *) new)->h.deep = depth; - - last_alloca_header = (header *) new; - - /* User storage begins just after header. */ - - return (pointer) ((char *) new + sizeof (header)); - } -} - -# if defined (CRAY) && defined (CRAY_STACKSEG_END) - -# ifdef DEBUG_I00AFUNC -# include -# endif - -# ifndef CRAY_STACK -# define CRAY_STACK -# ifndef CRAY2 -/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */ -struct stack_control_header - { - long shgrow:32; /* Number of times stack has grown. */ - long shaseg:32; /* Size of increments to stack. */ - long shhwm:32; /* High water mark of stack. */ - long shsize:32; /* Current size of stack (all segments). */ - }; - -/* The stack segment linkage control information occurs at - the high-address end of a stack segment. (The stack - grows from low addresses to high addresses.) The initial - part of the stack segment linkage control information is - 0200 (octal) words. This provides for register storage - for the routine which overflows the stack. */ - -struct stack_segment_linkage - { - long ss[0200]; /* 0200 overflow words. */ - long sssize:32; /* Number of words in this segment. */ - long ssbase:32; /* Offset to stack base. */ - long:32; - long sspseg:32; /* Offset to linkage control of previous - segment of stack. */ - long:32; - long sstcpt:32; /* Pointer to task common address block. */ - long sscsnm; /* Private control structure number for - microtasking. */ - long ssusr1; /* Reserved for user. */ - long ssusr2; /* Reserved for user. */ - long sstpid; /* Process ID for pid based multi-tasking. */ - long ssgvup; /* Pointer to multitasking thread giveup. */ - long sscray[7]; /* Reserved for Cray Research. */ - long ssa0; - long ssa1; - long ssa2; - long ssa3; - long ssa4; - long ssa5; - long ssa6; - long ssa7; - long sss0; - long sss1; - long sss2; - long sss3; - long sss4; - long sss5; - long sss6; - long sss7; - }; - -# else /* CRAY2 */ -/* The following structure defines the vector of words - returned by the STKSTAT library routine. */ -struct stk_stat - { - long now; /* Current total stack size. */ - long maxc; /* Amount of contiguous space which would - be required to satisfy the maximum - stack demand to date. */ - long high_water; /* Stack high-water mark. */ - long overflows; /* Number of stack overflow ($STKOFEN) calls. */ - long hits; /* Number of internal buffer hits. */ - long extends; /* Number of block extensions. */ - long stko_mallocs; /* Block allocations by $STKOFEN. */ - long underflows; /* Number of stack underflow calls ($STKRETN). */ - long stko_free; /* Number of deallocations by $STKRETN. */ - long stkm_free; /* Number of deallocations by $STKMRET. */ - long segments; /* Current number of stack segments. */ - long maxs; /* Maximum number of stack segments so far. */ - long pad_size; /* Stack pad size. */ - long current_address; /* Current stack segment address. */ - long current_size; /* Current stack segment size. This - number is actually corrupted by STKSTAT to - include the fifteen word trailer area. */ - long initial_address; /* Address of initial segment. */ - long initial_size; /* Size of initial segment. */ - }; - -/* The following structure describes the data structure which trails - any stack segment. I think that the description in 'asdef' is - out of date. I only describe the parts that I am sure about. */ - -struct stk_trailer - { - long this_address; /* Address of this block. */ - long this_size; /* Size of this block (does not include - this trailer). */ - long unknown2; - long unknown3; - long link; /* Address of trailer block of previous - segment. */ - long unknown5; - long unknown6; - long unknown7; - long unknown8; - long unknown9; - long unknown10; - long unknown11; - long unknown12; - long unknown13; - long unknown14; - }; - -# endif /* CRAY2 */ -# endif /* not CRAY_STACK */ - -# ifdef CRAY2 -/* Determine a "stack measure" for an arbitrary ADDRESS. - I doubt that "lint" will like this much. */ - -static long -i00afunc (long *address) -{ - struct stk_stat status; - struct stk_trailer *trailer; - long *block, size; - long result = 0; - - /* We want to iterate through all of the segments. The first - step is to get the stack status structure. We could do this - more quickly and more directly, perhaps, by referencing the - $LM00 common block, but I know that this works. */ - - STKSTAT (&status); - - /* Set up the iteration. */ - - trailer = (struct stk_trailer *) (status.current_address - + status.current_size - - 15); - - /* There must be at least one stack segment. Therefore it is - a fatal error if "trailer" is null. */ - - if (trailer == 0) - abort (); - - /* Discard segments that do not contain our argument address. */ - - while (trailer != 0) - { - block = (long *) trailer->this_address; - size = trailer->this_size; - if (block == 0 || size == 0) - abort (); - trailer = (struct stk_trailer *) trailer->link; - if ((block <= address) && (address < (block + size))) - break; - } - - /* Set the result to the offset in this segment and add the sizes - of all predecessor segments. */ - - result = address - block; - - if (trailer == 0) - { - return result; - } - - do - { - if (trailer->this_size <= 0) - abort (); - result += trailer->this_size; - trailer = (struct stk_trailer *) trailer->link; - } - while (trailer != 0); - - /* We are done. Note that if you present a bogus address (one - not in any segment), you will get a different number back, formed - from subtracting the address of the first block. This is probably - not what you want. */ - - return (result); -} - -# else /* not CRAY2 */ -/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP. - Determine the number of the cell within the stack, - given the address of the cell. The purpose of this - routine is to linearize, in some sense, stack addresses - for alloca. */ - -static long -i00afunc (long address) -{ - long stkl = 0; - - long size, pseg, this_segment, stack; - long result = 0; - - struct stack_segment_linkage *ssptr; - - /* Register B67 contains the address of the end of the - current stack segment. If you (as a subprogram) store - your registers on the stack and find that you are past - the contents of B67, you have overflowed the segment. - - B67 also points to the stack segment linkage control - area, which is what we are really interested in. */ - - stkl = CRAY_STACKSEG_END (); - ssptr = (struct stack_segment_linkage *) stkl; - - /* If one subtracts 'size' from the end of the segment, - one has the address of the first word of the segment. - - If this is not the first segment, 'pseg' will be - nonzero. */ - - pseg = ssptr->sspseg; - size = ssptr->sssize; - - this_segment = stkl - size; - - /* It is possible that calling this routine itself caused - a stack overflow. Discard stack segments which do not - contain the target address. */ - - while (!(this_segment <= address && address <= stkl)) - { -# ifdef DEBUG_I00AFUNC - fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl); -# endif - if (pseg == 0) - break; - stkl = stkl - pseg; - ssptr = (struct stack_segment_linkage *) stkl; - size = ssptr->sssize; - pseg = ssptr->sspseg; - this_segment = stkl - size; - } - - result = address - this_segment; - - /* If you subtract pseg from the current end of the stack, - you get the address of the previous stack segment's end. - This seems a little convoluted to me, but I'll bet you save - a cycle somewhere. */ - - while (pseg != 0) - { -# ifdef DEBUG_I00AFUNC - fprintf (stderr, "%011o %011o\n", pseg, size); -# endif - stkl = stkl - pseg; - ssptr = (struct stack_segment_linkage *) stkl; - size = ssptr->sssize; - pseg = ssptr->sspseg; - result += size; - } - return (result); -} - -# endif /* not CRAY2 */ -# endif /* CRAY */ - -# endif /* no alloca */ -#endif /* not GCC version 2 */ diff --git a/lib/dropin.c b/lib/dropin.c deleted file mode 100644 index 89039da3..00000000 --- a/lib/dropin.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - dropin.c -- a set of drop-in replacements for libc functions - Copyright (C) 2000-2005 Ivo Timmermans, - 2000-2009 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#include "system.h" - -#include "xalloc.h" - -#ifndef HAVE_DAEMON -/* - Replacement for the daemon() function. - - The daemon() function is for programs wishing to detach themselves - from the controlling terminal and run in the background as system - daemons. - - Unless the argument nochdir is non-zero, daemon() changes the - current working directory to the root (``/''). - - Unless the argument noclose is non-zero, daemon() will redirect - standard input, standard output and standard error to /dev/null. -*/ -int daemon(int nochdir, int noclose) { -#ifdef HAVE_FORK - pid_t pid; - int fd; - - pid = fork(); - - /* Check if forking failed */ - if(pid < 0) { - perror("fork"); - exit(-1); - } - - /* If we are the parent, terminate */ - if(pid) - exit(0); - - /* Detach by becoming the new process group leader */ - if(setsid() < 0) { - perror("setsid"); - return -1; - } - - /* Change working directory to the root (to avoid keeping mount - points busy) */ - if(!nochdir) { - chdir("/"); - } - - /* Redirect stdin/out/err to /dev/null */ - if(!noclose) { - fd = open("/dev/null", O_RDWR); - - if(fd < 0) { - perror("opening /dev/null"); - return -1; - } else { - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - } - } - - return 0; -#else - return -1; -#endif -} -#endif - -#ifndef HAVE_GET_CURRENT_DIR_NAME -/* - Replacement for the GNU get_current_dir_name function: - - get_current_dir_name will malloc(3) an array big enough to hold the - current directory name. If the environment variable PWD is set, and - its value is correct, then that value will be returned. -*/ -char *get_current_dir_name(void) { - size_t size; - char *buf; - char *r; - - /* Start with 100 bytes. If this turns out to be insufficient to - contain the working directory, double the size. */ - size = 100; - buf = xmalloc(size); - - errno = 0; /* Success */ - r = getcwd(buf, size); - - /* getcwd returns NULL and sets errno to ERANGE if the bufferspace - is insufficient to contain the entire working directory. */ - while(r == NULL && errno == ERANGE) { - free(buf); - size <<= 1; /* double the size */ - buf = xmalloc(size); - r = getcwd(buf, size); - } - - return buf; -} -#endif - -#ifndef HAVE_ASPRINTF -int asprintf(char **buf, const char *fmt, ...) { - int result; - va_list ap; - va_start(ap, fmt); - result = vasprintf(buf, fmt, ap); - va_end(ap); - return result; -} - -int vasprintf(char **buf, const char *fmt, va_list ap) { - int status; - va_list aq; - int len; - - len = 4096; - *buf = xmalloc(len); - - va_copy(aq, ap); - status = vsnprintf(*buf, len, fmt, aq); - va_end(aq); - - if(status >= 0) - *buf = xrealloc(*buf, status + 1); - - if(status > len - 1) { - len = status; - va_copy(aq, ap); - status = vsnprintf(*buf, len, fmt, aq); - va_end(aq); - } - - return status; -} -#endif - -#ifndef HAVE_GETTIMEOFDAY -int gettimeofday(struct timeval *tv, void *tz) { - tv->tv_sec = time(NULL); - tv->tv_usec = 0; - return 0; -} -#endif diff --git a/lib/dropin.h b/lib/dropin.h deleted file mode 100644 index e9d13535..00000000 --- a/lib/dropin.h +++ /dev/null @@ -1,44 +0,0 @@ -/* - dropin.h -- header file for dropin.c - Copyright (C) 2000-2005 Ivo Timmermans, - 2000-2009 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __DROPIN_H__ -#define __DROPIN_H__ - -#include "fake-getaddrinfo.h" -#include "fake-getnameinfo.h" - -#ifndef HAVE_DAEMON -extern int daemon(int, int); -#endif - -#ifndef HAVE_GET_CURRENT_DIR_NAME -extern char *get_current_dir_name(void); -#endif - -#ifndef HAVE_ASPRINTF -extern int asprintf(char **, const char *, ...); -extern int vasprintf(char **, const char *, va_list ap); -#endif - -#ifndef HAVE_GETTIMEOFDAY -extern int gettimeofday(struct timeval *, void *); -#endif - -#endif /* __DROPIN_H__ */ diff --git a/lib/ethernet.h b/lib/ethernet.h deleted file mode 100644 index eef5f424..00000000 --- a/lib/ethernet.h +++ /dev/null @@ -1,85 +0,0 @@ -/* - ethernet.h -- missing Ethernet related definitions - Copyright (C) 2005 Ivo Timmermans - 2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __TINC_ETHERNET_H__ -#define __TINC_ETHERNET_H__ - -#ifndef ETH_ALEN -#define ETH_ALEN 6 -#endif - -#ifndef ARPHRD_ETHER -#define ARPHRD_ETHER 1 -#endif - -#ifndef ETH_P_IP -#define ETH_P_IP 0x0800 -#endif - -#ifndef ETH_P_ARP -#define ETH_P_ARP 0x0806 -#endif - -#ifndef ETH_P_IPV6 -#define ETH_P_IPV6 0x86DD -#endif - -#ifndef HAVE_STRUCT_ETHER_HEADER -struct ether_header { - uint8_t ether_dhost[ETH_ALEN]; - uint8_t ether_shost[ETH_ALEN]; - uint16_t ether_type; -} __attribute__ ((__packed__)); -#endif - -#ifndef HAVE_STRUCT_ARPHDR -struct arphdr { - uint16_t ar_hrd; - uint16_t ar_pro; - uint8_t ar_hln; - uint8_t ar_pln; - uint16_t ar_op; -} __attribute__ ((__packed__)); - -#define ARPOP_REQUEST 1 -#define ARPOP_REPLY 2 -#define ARPOP_RREQUEST 3 -#define ARPOP_RREPLY 4 -#define ARPOP_InREQUEST 8 -#define ARPOP_InREPLY 9 -#define ARPOP_NAK 10 -#endif - -#ifndef HAVE_STRUCT_ETHER_ARP -struct ether_arp { - struct arphdr ea_hdr; - uint8_t arp_sha[ETH_ALEN]; - uint8_t arp_spa[4]; - uint8_t arp_tha[ETH_ALEN]; - uint8_t arp_tpa[4]; -} __attribute__ ((__packed__)); -#define arp_hrd ea_hdr.ar_hrd -#define arp_pro ea_hdr.ar_pro -#define arp_hln ea_hdr.ar_hln -#define arp_pln ea_hdr.ar_pln -#define arp_op ea_hdr.ar_op -#endif - -#endif /* __TINC_ETHERNET_H__ */ diff --git a/lib/fake-gai-errnos.h b/lib/fake-gai-errnos.h deleted file mode 100644 index 4ffabb69..00000000 --- a/lib/fake-gai-errnos.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * fake library for ssh - * - * This file is included in getaddrinfo.c and getnameinfo.c. - * See getaddrinfo.c and getnameinfo.c. - */ - -/* for old netdb.h */ -#ifndef EAI_NODATA -#define EAI_NODATA 1 -#endif - -#ifndef EAI_MEMORY -#define EAI_MEMORY 2 -#endif - -#ifndef EAI_FAMILY -#define EAI_FAMILY 3 -#endif diff --git a/lib/fake-getaddrinfo.c b/lib/fake-getaddrinfo.c deleted file mode 100644 index df3d3476..00000000 --- a/lib/fake-getaddrinfo.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * fake library for ssh - * - * This file includes getaddrinfo(), freeaddrinfo() and gai_strerror(). - * These funtions are defined in rfc2133. - * - * But these functions are not implemented correctly. The minimum subset - * is implemented for ssh use only. For exapmle, this routine assumes - * that ai_family is AF_INET. Don't use it for another purpose. - */ - -#include "system.h" - -#include "ipv4.h" -#include "ipv6.h" -#include "fake-getaddrinfo.h" -#include "xalloc.h" - - -#if !HAVE_DECL_GAI_STRERROR -char *gai_strerror(int ecode) { - switch (ecode) { - case EAI_NODATA: - return "No address associated with hostname"; - case EAI_MEMORY: - return "Memory allocation failure"; - case EAI_FAMILY: - return "Address family not supported"; - default: - return "Unknown error"; - } -} -#endif /* !HAVE_GAI_STRERROR */ - -#if !HAVE_DECL_FREEADDRINFO -void freeaddrinfo(struct addrinfo *ai) { - struct addrinfo *next; - - while(ai) { - next = ai->ai_next; - free(ai); - ai = next; - } -} -#endif /* !HAVE_FREEADDRINFO */ - -#if !HAVE_DECL_GETADDRINFO -static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr) { - struct addrinfo *ai; - - ai = xmalloc_and_zero(sizeof(struct addrinfo) + sizeof(struct sockaddr_in)); - - ai->ai_addr = (struct sockaddr *)(ai + 1); - ai->ai_addrlen = sizeof(struct sockaddr_in); - ai->ai_addr->sa_family = ai->ai_family = AF_INET; - - ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port; - ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr; - - return ai; -} - -int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) { - struct addrinfo *prev = NULL; - struct hostent *hp; - struct in_addr in = {0}; - int i; - uint16_t port = 0; - - if(hints && hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC) - return EAI_FAMILY; - - if (servname) - port = htons(atoi(servname)); - - if (hints && hints->ai_flags & AI_PASSIVE) { - *res = malloc_ai(port, htonl(0x00000000)); - return 0; - } - - if (!hostname) { - *res = malloc_ai(port, htonl(0x7f000001)); - return 0; - } - - hp = gethostbyname(hostname); - - if(!hp || !hp->h_addr_list || !hp->h_addr_list[0]) - return EAI_NODATA; - - for (i = 0; hp->h_addr_list[i]; i++) { - *res = malloc_ai(port, ((struct in_addr *)hp->h_addr_list[i])->s_addr); - - if(prev) - prev->ai_next = *res; - - prev = *res; - } - - return 0; -} -#endif /* !HAVE_GETADDRINFO */ diff --git a/lib/fake-getaddrinfo.h b/lib/fake-getaddrinfo.h deleted file mode 100644 index 5af74918..00000000 --- a/lib/fake-getaddrinfo.h +++ /dev/null @@ -1,47 +0,0 @@ -#ifndef _FAKE_GETADDRINFO_H -#define _FAKE_GETADDRINFO_H - -#include "fake-gai-errnos.h" - -#ifndef AI_PASSIVE -# define AI_PASSIVE 1 -# define AI_CANONNAME 2 -#endif - -#ifndef NI_NUMERICHOST -# define NI_NUMERICHOST 2 -# define NI_NAMEREQD 4 -# define NI_NUMERICSERV 8 -#endif - -#ifndef AI_NUMERICHOST -#define AI_NUMERICHOST 4 -#endif - -#ifndef HAVE_STRUCT_ADDRINFO -struct addrinfo { - int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ - int ai_family; /* PF_xxx */ - int ai_socktype; /* SOCK_xxx */ - int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ - size_t ai_addrlen; /* length of ai_addr */ - char *ai_canonname; /* canonical name for hostname */ - struct sockaddr *ai_addr; /* binary address */ - struct addrinfo *ai_next; /* next structure in linked list */ -}; -#endif /* !HAVE_STRUCT_ADDRINFO */ - -#if !HAVE_DECL_GETADDRINFO -int getaddrinfo(const char *hostname, const char *servname, - const struct addrinfo *hints, struct addrinfo **res); -#endif /* !HAVE_GETADDRINFO */ - -#if !HAVE_DECL_GAI_STRERROR -char *gai_strerror(int ecode); -#endif /* !HAVE_GAI_STRERROR */ - -#if !HAVE_DECL_FREEADDRINFO -void freeaddrinfo(struct addrinfo *ai); -#endif /* !HAVE_FREEADDRINFO */ - -#endif /* _FAKE_GETADDRINFO_H */ diff --git a/lib/fake-getnameinfo.c b/lib/fake-getnameinfo.c deleted file mode 100644 index 1eba4925..00000000 --- a/lib/fake-getnameinfo.c +++ /dev/null @@ -1,54 +0,0 @@ -/* - * fake library for ssh - * - * This file includes getnameinfo(). - * These funtions are defined in rfc2133. - * - * But these functions are not implemented correctly. The minimum subset - * is implemented for ssh use only. For exapmle, this routine assumes - * that ai_family is AF_INET. Don't use it for another purpose. - */ - -#include "system.h" - -#include "fake-getnameinfo.h" -#include "fake-getaddrinfo.h" - -#if !HAVE_DECL_GETNAMEINFO - -int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags) { - struct sockaddr_in *sin = (struct sockaddr_in *)sa; - struct hostent *hp; - int len; - - if(sa->sa_family != AF_INET) - return EAI_FAMILY; - - if(serv && servlen) { - len = snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); - if(len < 0 || len >= servlen) - return EAI_MEMORY; - } - - if(!host || !hostlen) - return 0; - - if(flags & NI_NUMERICHOST) { - len = snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); - if(len < 0 || len >= hostlen) - return EAI_MEMORY; - return 0; - } - - hp = gethostbyaddr((char *)&sin->sin_addr, sizeof(struct in_addr), AF_INET); - - if(!hp || !hp->h_name || !hp->h_name[0]) - return EAI_NODATA; - - len = snprintf(host, hostlen, "%s", hp->h_name); - if(len < 0 || len >= hostlen) - return EAI_MEMORY; - - return 0; -} -#endif /* !HAVE_GETNAMEINFO */ diff --git a/lib/fake-getnameinfo.h b/lib/fake-getnameinfo.h deleted file mode 100644 index 4389a8fe..00000000 --- a/lib/fake-getnameinfo.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef _FAKE_GETNAMEINFO_H -#define _FAKE_GETNAMEINFO_H - -#if !HAVE_DECL_GETNAMEINFO -int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, - size_t hostlen, char *serv, size_t servlen, int flags); -#endif /* !HAVE_GETNAMEINFO */ - -#ifndef NI_MAXSERV -# define NI_MAXSERV 32 -#endif /* !NI_MAXSERV */ -#ifndef NI_MAXHOST -# define NI_MAXHOST 1025 -#endif /* !NI_MAXHOST */ - -#endif /* _FAKE_GETNAMEINFO_H */ diff --git a/lib/getopt.c b/lib/getopt.c deleted file mode 100644 index b2f88b42..00000000 --- a/lib/getopt.c +++ /dev/null @@ -1,1042 +0,0 @@ -/* Getopt for GNU. - NOTE: getopt is now part of the C library, so if you don't know what - "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu - before changing it! - - Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 - Free Software Foundation, Inc. - -NOTE: The canonical source of this file is maintained with the GNU C Library. -Bugs can be reported to bug-glibc@prep.ai.mit.edu. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License along -with this program; if not, write to the Free Software Foundation, Inc., -51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -/* This tells Alpha OSF/1 not to define a getopt prototype in . - Ditto for AIX 3.2 and . */ -#ifndef _NO_PROTO -#define _NO_PROTO -#endif - -#ifdef HAVE_CONFIG_H -#include -#endif - -#if !defined (__STDC__) || !__STDC__ -/* This is a separate conditional since some stdc systems - reject `defined (const)'. */ -#ifndef const -#define const -#endif -#endif - -#include - -/* Comment out all this code if we are using the GNU C Library, and are not - actually compiling the library itself. This code is part of the GNU C - Library, but also included in many other GNU distributions. Compiling - and linking in this code is a waste when using the GNU C library - (especially if it is a shared library). Rather than having every GNU - program understand `configure --with-gnu-libc' and omit the object files, - it is simpler to just do this in the source for each such file. */ - -#define GETOPT_INTERFACE_VERSION 2 -#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 -#include -#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION -#define ELIDE_CODE -#endif -#endif - -#ifndef ELIDE_CODE - - -/* This needs to come after some library #include - to get __GNU_LIBRARY__ defined. */ -#ifdef __GNU_LIBRARY__ -/* Don't include stdlib.h for non-GNU C libraries because some of them - contain conflicting prototypes for getopt. */ -#include -#include -#endif /* GNU C library. */ - -#ifdef VMS -#include -#if HAVE_STRING_H - 0 -#include -#endif -#endif - -#if defined (WIN32) && !defined (__CYGWIN32__) -/* It's not Unix, really. See? Capital letters. */ -#include -#define getpid() GetCurrentProcessId() -#endif - -/* This version of `getopt' appears to the caller like standard Unix `getopt' - but it behaves differently for the user, since it allows the user - to intersperse the options with the other arguments. - - As `getopt' works, it permutes the elements of ARGV so that, - when it is done, all the options precede everything else. Thus - all application programs are extended to handle flexible argument order. - - Setting the environment variable POSIXLY_CORRECT disables permutation. - Then the behavior is completely standard. - - GNU application programs can use a third alternative mode in which - they can distinguish the relative order of options and other arguments. */ - -#include "getopt.h" - -/* For communication from `getopt' to the caller. - When `getopt' finds an option that takes an argument, - the argument value is returned here. - Also, when `ordering' is RETURN_IN_ORDER, - each non-option ARGV-element is returned here. */ - -char *optarg = NULL; - -/* Index in ARGV of the next element to be scanned. - This is used for communication to and from the caller - and for communication between successive calls to `getopt'. - - On entry to `getopt', zero means this is the first call; initialize. - - When `getopt' returns -1, this is the index of the first of the - non-option elements that the caller should itself scan. - - Otherwise, `optind' communicates from one call to the next - how much of ARGV has been scanned so far. */ - -/* 1003.2 says this must be 1 before any call. */ -int optind = 1; - -/* Formerly, initialization of getopt depended on optind==0, which - causes problems with re-calling getopt as programs generally don't - know that. */ - -int __getopt_initialized = 0; - -/* The next char to be scanned in the option-element - in which the last option character we returned was found. - This allows us to pick up the scan where we left off. - - If this is zero, or a null string, it means resume the scan - by advancing to the next ARGV-element. */ - -static char *nextchar; - -/* Callers store zero here to inhibit the error message - for unrecognized options. */ - -int opterr = 1; - -/* Set to an option character which was unrecognized. - This must be initialized on some systems to avoid linking in the - system's own getopt implementation. */ - -int optopt = '?'; - -/* Describe how to deal with options that follow non-option ARGV-elements. - - If the caller did not specify anything, - the default is REQUIRE_ORDER if the environment variable - POSIXLY_CORRECT is defined, PERMUTE otherwise. - - REQUIRE_ORDER means don't recognize them as options; - stop option processing when the first non-option is seen. - This is what Unix does. - This mode of operation is selected by either setting the environment - variable POSIXLY_CORRECT, or using `+' as the first character - of the list of option characters. - - PERMUTE is the default. We permute the contents of ARGV as we scan, - so that eventually all the non-options are at the end. This allows options - to be given in any order, even with programs that were not written to - expect this. - - RETURN_IN_ORDER is an option available to programs that were written - to expect options and other ARGV-elements in any order and that care about - the ordering of the two. We describe each non-option ARGV-element - as if it were the argument of an option with character code 1. - Using `-' as the first character of the list of option characters - selects this mode of operation. - - The special argument `--' forces an end of option-scanning regardless - of the value of `ordering'. In the case of RETURN_IN_ORDER, only - `--' can cause `getopt' to return -1 with `optind' != ARGC. */ - -static enum -{ - REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER -} ordering; - -/* Value of POSIXLY_CORRECT environment variable. */ -static char *posixly_correct; - -#ifdef __GNU_LIBRARY__ -/* We want to avoid inclusion of string.h with non-GNU libraries - because there are many ways it can cause trouble. - On some systems, it contains special magic macros that don't work - in GCC. */ -#include -#define my_index strchr -#else - -/* Avoid depending on library functions or files - whose names are inconsistent. */ - -char *getenv (); - -static char * -my_index (str, chr) - const char *str; - int chr; -{ - while (*str) - { - if (*str == chr) - return (char *) str; - str++; - } - return 0; -} - -/* If using GCC, we can safely declare strlen this way. - If not using GCC, it is ok not to declare it. */ -#ifdef __GNUC__ -/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. - That was relevant to code that was here before. */ -#if !defined (__STDC__) || !__STDC__ -/* gcc with -traditional declares the built-in strlen to return int, - and has done so at least since version 2.4.5. -- rms. */ -extern int strlen (const char *); -#endif /* not __STDC__ */ -#endif /* __GNUC__ */ - -#endif /* not __GNU_LIBRARY__ */ - -/* Handle permutation of arguments. */ - -/* Describe the part of ARGV that contains non-options that have - been skipped. `first_nonopt' is the index in ARGV of the first of them; - `last_nonopt' is the index after the last of them. */ - -static int first_nonopt; -static int last_nonopt; - -#ifdef _LIBC -/* Bash 2.0 gives us an environment variable containing flags - indicating ARGV elements that should not be considered arguments. */ - -/* Defined in getopt_init.c */ -extern char *__getopt_nonoption_flags; - -static int nonoption_flags_max_len; -static int nonoption_flags_len; - -static int original_argc; -static char *const *original_argv; - -extern pid_t __libc_pid; - -/* Make sure the environment variable bash 2.0 puts in the environment - is valid for the getopt call we must make sure that the ARGV passed - to getopt is that one passed to the process. */ -static void -__attribute__ ((__unused__)) -store_args_and_env (int argc, char *const *argv) -{ - /* XXX This is no good solution. We should rather copy the args so - that we can compare them later. But we must not use malloc(3). */ - original_argc = argc; - original_argv = argv; -} -text_set_element (__libc_subinit, store_args_and_env); - -# define SWAP_FLAGS(ch1, ch2) \ - if (nonoption_flags_len > 0) \ - { \ - char __tmp = __getopt_nonoption_flags[ch1]; \ - __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ - __getopt_nonoption_flags[ch2] = __tmp; \ - } -#else /* !_LIBC */ -# define SWAP_FLAGS(ch1, ch2) -#endif /* _LIBC */ - -/* Exchange two adjacent subsequences of ARGV. - One subsequence is elements [first_nonopt,last_nonopt) - which contains all the non-options that have been skipped so far. - The other is elements [last_nonopt,optind), which contains all - the options processed since those non-options were skipped. - - `first_nonopt' and `last_nonopt' are relocated so that they describe - the new indices of the non-options in ARGV after they are moved. */ - -#if defined (__STDC__) && __STDC__ -static void exchange (char **); -#endif - -static void -exchange (argv) - char **argv; -{ - int bottom = first_nonopt; - int middle = last_nonopt; - int top = optind; - char *tem; - - /* Exchange the shorter segment with the far end of the longer segment. - That puts the shorter segment into the right place. - It leaves the longer segment in the right place overall, - but it consists of two parts that need to be swapped next. */ - -#ifdef _LIBC - /* First make sure the handling of the `__getopt_nonoption_flags' - string can work normally. Our top argument must be in the range - of the string. */ - if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) - { - /* We must extend the array. The user plays games with us and - presents new arguments. */ - char *new_str = malloc (top + 1); - if (new_str == NULL) - nonoption_flags_len = nonoption_flags_max_len = 0; - else - { - memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len); - memset (&new_str[nonoption_flags_max_len], '\0', - top + 1 - nonoption_flags_max_len); - nonoption_flags_max_len = top + 1; - __getopt_nonoption_flags = new_str; - } - } -#endif - - while (top > middle && middle > bottom) - { - if (top - middle > middle - bottom) - { - /* Bottom segment is the short one. */ - int len = middle - bottom; - register int i; - - /* Swap it with the top part of the top segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[top - (middle - bottom) + i]; - argv[top - (middle - bottom) + i] = tem; - SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); - } - /* Exclude the moved bottom segment from further swapping. */ - top -= len; - } - else - { - /* Top segment is the short one. */ - int len = top - middle; - register int i; - - /* Swap it with the bottom part of the bottom segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[middle + i]; - argv[middle + i] = tem; - SWAP_FLAGS (bottom + i, middle + i); - } - /* Exclude the moved top segment from further swapping. */ - bottom += len; - } - } - - /* Update records for the slots the non-options now occupy. */ - - first_nonopt += (optind - last_nonopt); - last_nonopt = optind; -} - -/* Initialize the internal data when the first call is made. */ - -#if defined (__STDC__) && __STDC__ -static const char *_getopt_initialize (int, char *const *, const char *); -#endif -static const char * -_getopt_initialize (argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; -{ - /* Start processing options with ARGV-element 1 (since ARGV-element 0 - is the program name); the sequence of previously skipped - non-option ARGV-elements is empty. */ - - first_nonopt = last_nonopt = optind; - - nextchar = NULL; - - posixly_correct = getenv ("POSIXLY_CORRECT"); - - /* Determine how to handle the ordering of options and nonoptions. */ - - if (optstring[0] == '-') - { - ordering = RETURN_IN_ORDER; - ++optstring; - } - else if (optstring[0] == '+') - { - ordering = REQUIRE_ORDER; - ++optstring; - } - else if (posixly_correct != NULL) - ordering = REQUIRE_ORDER; - else - ordering = PERMUTE; - -#ifdef _LIBC - if (posixly_correct == NULL - && argc == original_argc && argv == original_argv) - { - if (nonoption_flags_max_len == 0) - { - if (__getopt_nonoption_flags == NULL - || __getopt_nonoption_flags[0] == '\0') - nonoption_flags_max_len = -1; - else - { - const char *orig_str = __getopt_nonoption_flags; - int len = nonoption_flags_max_len = strlen (orig_str); - if (nonoption_flags_max_len < argc) - nonoption_flags_max_len = argc; - __getopt_nonoption_flags = - (char *) malloc (nonoption_flags_max_len); - if (__getopt_nonoption_flags == NULL) - nonoption_flags_max_len = -1; - else - { - memcpy (__getopt_nonoption_flags, orig_str, len); - memset (&__getopt_nonoption_flags[len], '\0', - nonoption_flags_max_len - len); - } - } - } - nonoption_flags_len = nonoption_flags_max_len; - } - else - nonoption_flags_len = 0; -#endif - - return optstring; -} - -/* Scan elements of ARGV (whose length is ARGC) for option characters - given in OPTSTRING. - - If an element of ARGV starts with '-', and is not exactly "-" or "--", - then it is an option element. The characters of this element - (aside from the initial '-') are option characters. If `getopt' - is called repeatedly, it returns successively each of the option characters - from each of the option elements. - - If `getopt' finds another option character, it returns that character, - updating `optind' and `nextchar' so that the next call to `getopt' can - resume the scan with the following option character or ARGV-element. - - If there are no more option characters, `getopt' returns -1. - Then `optind' is the index in ARGV of the first ARGV-element - that is not an option. (The ARGV-elements have been permuted - so that those that are not options now come last.) - - OPTSTRING is a string containing the legitimate option characters. - If an option character is seen that is not listed in OPTSTRING, - return '?' after printing an error message. If you set `opterr' to - zero, the error message is suppressed but we still return '?'. - - If a char in OPTSTRING is followed by a colon, that means it wants an arg, - so the following text in the same ARGV-element, or the text of the following - ARGV-element, is returned in `optarg'. Two colons mean an option that - wants an optional arg; if there is text in the current ARGV-element, - it is returned in `optarg', otherwise `optarg' is set to zero. - - If OPTSTRING starts with `-' or `+', it requests different methods of - handling the non-option ARGV-elements. - See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. - - Long-named options begin with `--' instead of `-'. - Their names may be abbreviated as long as the abbreviation is unique - or is an exact match for some defined option. If they have an - argument, it follows the option name in the same ARGV-element, separated - from the option name by a `=', or else the in next ARGV-element. - When `getopt' finds a long-named option, it returns 0 if that option's - `flag' field is nonzero, the value of the option's `val' field - if the `flag' field is zero. - - The elements of ARGV aren't really const, because we permute them. - But we pretend they're const in the prototype to be compatible - with other systems. - - LONGOPTS is a vector of `struct option' terminated by an - element containing a name which is zero. - - LONGIND returns the index in LONGOPT of the long-named option found. - It is only valid when a long-named option has been found by the most - recent call. - - If LONG_ONLY is nonzero, '-' as well as '--' can introduce - long-named options. */ - -int -_getopt_internal (argc, argv, optstring, longopts, longind, long_only) - int argc; - char *const *argv; - const char *optstring; - const struct option *longopts; - int *longind; - int long_only; -{ - optarg = NULL; - - if (optind == 0 || !__getopt_initialized) - { - if (optind == 0) - optind = 1; /* Don't scan ARGV[0], the program name. */ - optstring = _getopt_initialize (argc, argv, optstring); - __getopt_initialized = 1; - } - - /* Test whether ARGV[optind] points to a non-option argument. - Either it does not have option syntax, or there is an environment flag - from the shell indicating it is not an option. The later information - is only used when the used in the GNU libc. */ -#ifdef _LIBC -#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ - || (optind < nonoption_flags_len \ - && __getopt_nonoption_flags[optind] == '1')) -#else -#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') -#endif - - if (nextchar == NULL || *nextchar == '\0') - { - /* Advance to the next ARGV-element. */ - - /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been - moved back by the user (who may also have changed the arguments). */ - if (last_nonopt > optind) - last_nonopt = optind; - if (first_nonopt > optind) - first_nonopt = optind; - - if (ordering == PERMUTE) - { - /* If we have just processed some options following some non-options, - exchange them so that the options come first. */ - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange ((char **) argv); - else if (last_nonopt != optind) - first_nonopt = optind; - - /* Skip any additional non-options - and extend the range of non-options previously skipped. */ - - while (optind < argc && NONOPTION_P) - optind++; - last_nonopt = optind; - } - - /* The special ARGV-element `--' means premature end of options. - Skip it like a null option, - then exchange with previous non-options as if it were an option, - then skip everything else like a non-option. */ - - if (optind != argc && !strcmp (argv[optind], "--")) - { - optind++; - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange ((char **) argv); - else if (first_nonopt == last_nonopt) - first_nonopt = optind; - last_nonopt = argc; - - optind = argc; - } - - /* If we have done all the ARGV-elements, stop the scan - and back over any non-options that we skipped and permuted. */ - - if (optind == argc) - { - /* Set the next-arg-index to point at the non-options - that we previously skipped, so the caller will digest them. */ - if (first_nonopt != last_nonopt) - optind = first_nonopt; - return -1; - } - - /* If we have come to a non-option and did not permute it, - either stop the scan or describe it to the caller and pass it by. */ - - if (NONOPTION_P) - { - if (ordering == REQUIRE_ORDER) - return -1; - optarg = argv[optind++]; - return 1; - } - - /* We have found another option-ARGV-element. - Skip the initial punctuation. */ - - nextchar = (argv[optind] + 1 - + (longopts != NULL && argv[optind][1] == '-')); - } - - /* Decode the current option-ARGV-element. */ - - /* Check whether the ARGV-element is a long option. - - If long_only and the ARGV-element has the form "-f", where f is - a valid short option, don't consider it an abbreviated form of - a long option that starts with f. Otherwise there would be no - way to give the -f short option. - - On the other hand, if there's a long option "fubar" and - the ARGV-element is "-fu", do consider that an abbreviation of - the long option, just like "--fu", and not "-f" with arg "u". - - This distinction seems to be the most useful approach. */ - - if (longopts != NULL - && (argv[optind][1] == '-' - || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = -1; - int option_index; - - for (nameend = nextchar; *nameend && *nameend != '='; nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match - or abbreviated matches. */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp (p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - nextchar) - == (unsigned int) strlen (p->name)) - { - /* Exact match found. */ - pfound = p; - indfound = option_index; - exact = 1; - break; - } - else if (pfound == NULL) - { - /* First nonexact match found. */ - pfound = p; - indfound = option_index; - } - else - /* Second or later nonexact match found. */ - ambig = 1; - } - - if (ambig && !exact) - { - if (opterr) - fprintf (stderr, "%s: option `%s' is ambiguous\n", - argv[0], argv[optind]); - nextchar += strlen (nextchar); - optind++; - optopt = 0; - return '?'; - } - - if (pfound != NULL) - { - option_index = indfound; - optind++; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - if (argv[optind - 1][1] == '-') - /* --option */ - fprintf (stderr, - "%s: option `--%s' doesn't allow an argument\n", - argv[0], pfound->name); - else - /* +option or -option */ - fprintf (stderr, - "%s: option `%c%s' doesn't allow an argument\n", - argv[0], argv[optind - 1][0], pfound->name); - - nextchar += strlen (nextchar); - - optopt = pfound->val; - return '?'; - } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf (stderr, - "%s: option `%s' requires an argument\n", - argv[0], argv[optind - 1]); - nextchar += strlen (nextchar); - optopt = pfound->val; - return optstring[0] == ':' ? ':' : '?'; - } - } - nextchar += strlen (nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; - } - - /* Can't find it as a long option. If this is not getopt_long_only, - or the option starts with '--' or is not a valid short - option, then it's an error. - Otherwise interpret it as a short option. */ - if (!long_only || argv[optind][1] == '-' - || my_index (optstring, *nextchar) == NULL) - { - if (opterr) - { - if (argv[optind][1] == '-') - /* --option */ - fprintf (stderr, "%s: unrecognized option `--%s'\n", - argv[0], nextchar); - else - /* +option or -option */ - fprintf (stderr, "%s: unrecognized option `%c%s'\n", - argv[0], argv[optind][0], nextchar); - } - nextchar = (char *) ""; - optind++; - optopt = 0; - return '?'; - } - } - - /* Look at and handle the next short option-character. */ - - { - char c = *nextchar++; - char *temp = my_index (optstring, c); - - /* Increment `optind' when we start to process its last character. */ - if (*nextchar == '\0') - ++optind; - - if (temp == NULL || c == ':') - { - if (opterr) - { - if (posixly_correct) - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: illegal option -- %c\n", - argv[0], c); - else - fprintf (stderr, "%s: invalid option -- %c\n", - argv[0], c); - } - optopt = c; - return '?'; - } - /* Convenience. Treat POSIX -W foo same as long option --foo */ - if (temp[0] == 'W' && temp[1] == ';') - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = 0; - int option_index; - - /* This is an option that requires an argument. */ - if (*nextchar != '\0') - { - optarg = nextchar; - /* If we end this ARGV-element by taking the rest as an arg, - we must advance to the next element now. */ - optind++; - } - else if (optind == argc) - { - if (opterr) - { - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: option requires an argument -- %c\n", - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - return c; - } - else - /* We already incremented `optind' once; - increment it again when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - - /* optarg is now the argument, see if it's in the - table of longopts. */ - - for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match - or abbreviated matches. */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp (p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - nextchar) == strlen (p->name)) - { - /* Exact match found. */ - pfound = p; - indfound = option_index; - exact = 1; - break; - } - else if (pfound == NULL) - { - /* First nonexact match found. */ - pfound = p; - indfound = option_index; - } - else - /* Second or later nonexact match found. */ - ambig = 1; - } - if (ambig && !exact) - { - if (opterr) - fprintf (stderr, "%s: option `-W %s' is ambiguous\n", - argv[0], argv[optind]); - nextchar += strlen (nextchar); - optind++; - return '?'; - } - if (pfound != NULL) - { - option_index = indfound; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - fprintf (stderr, - "%s: option `-W %s' doesn't allow an argument\n", - argv[0], pfound->name); - - nextchar += strlen (nextchar); - return '?'; - } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf (stderr, - "%s: option `%s' requires an argument\n", - argv[0], argv[optind - 1]); - nextchar += strlen (nextchar); - return optstring[0] == ':' ? ':' : '?'; - } - } - nextchar += strlen (nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; - } - nextchar = NULL; - return 'W'; /* Let the application handle it. */ - } - if (temp[1] == ':') - { - if (temp[2] == ':') - { - /* This is an option that accepts an argument optionally. */ - if (*nextchar != '\0') - { - optarg = nextchar; - optind++; - } - else - optarg = NULL; - nextchar = NULL; - } - else - { - /* This is an option that requires an argument. */ - if (*nextchar != '\0') - { - optarg = nextchar; - /* If we end this ARGV-element by taking the rest as an arg, - we must advance to the next element now. */ - optind++; - } - else if (optind == argc) - { - if (opterr) - { - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, - "%s: option requires an argument -- %c\n", - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - } - else - /* We already incremented `optind' once; - increment it again when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - nextchar = NULL; - } - } - return c; - } -} - -int -getopt (argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; -{ - return _getopt_internal (argc, argv, optstring, - (const struct option *) 0, - (int *) 0, - 0); -} - -#endif /* Not ELIDE_CODE. */ - -#ifdef TEST - -/* Compile with -DTEST to make an executable for use in testing - the above definition of `getopt'. */ - -int -main (argc, argv) - int argc; - char **argv; -{ - int c; - int digit_optind = 0; - - while (1) - { - int this_option_optind = optind ? optind : 1; - - c = getopt (argc, argv, "abc:d:0123456789"); - if (c == -1) - break; - - switch (c) - { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if (digit_optind != 0 && digit_optind != this_option_optind) - printf ("digits occur in two different argv-elements.\n"); - digit_optind = this_option_optind; - printf ("option %c\n", c); - break; - - case 'a': - printf ("option a\n"); - break; - - case 'b': - printf ("option b\n"); - break; - - case 'c': - printf ("option c with value `%s'\n", optarg); - break; - - case '?': - break; - - default: - printf ("?? getopt returned character code 0%o ??\n", c); - } - } - - if (optind < argc) - { - printf ("non-option ARGV-elements: "); - while (optind < argc) - printf ("%s ", argv[optind++]); - printf ("\n"); - } - - exit (0); -} - -#endif /* TEST */ diff --git a/lib/getopt.h b/lib/getopt.h deleted file mode 100644 index ddf6fdda..00000000 --- a/lib/getopt.h +++ /dev/null @@ -1,133 +0,0 @@ -/* Declarations for getopt. - Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc. - -NOTE: The canonical source of this file is maintained with the GNU C Library. -Bugs can be reported to bug-glibc@prep.ai.mit.edu. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License along -with this program; if not, write to the Free Software Foundation, Inc., -51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef _GETOPT_H -#define _GETOPT_H 1 - -#ifdef __cplusplus -extern "C" { -#endif - -/* For communication from `getopt' to the caller. - When `getopt' finds an option that takes an argument, - the argument value is returned here. - Also, when `ordering' is RETURN_IN_ORDER, - each non-option ARGV-element is returned here. */ - -extern char *optarg; - -/* Index in ARGV of the next element to be scanned. - This is used for communication to and from the caller - and for communication between successive calls to `getopt'. - - On entry to `getopt', zero means this is the first call; initialize. - - When `getopt' returns -1, this is the index of the first of the - non-option elements that the caller should itself scan. - - Otherwise, `optind' communicates from one call to the next - how much of ARGV has been scanned so far. */ - -extern int optind; - -/* Callers store zero here to inhibit the error message `getopt' prints - for unrecognized options. */ - -extern int opterr; - -/* Set to an option character which was unrecognized. */ - -extern int optopt; - -/* Describe the long-named options requested by the application. - The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector - of `struct option' terminated by an element containing a name which is - zero. - - The field `has_arg' is: - no_argument (or 0) if the option does not take an argument, - required_argument (or 1) if the option requires an argument, - optional_argument (or 2) if the option takes an optional argument. - - If the field `flag' is not NULL, it points to a variable that is set - to the value given in the field `val' when the option is found, but - left unchanged if the option is not found. - - To have a long-named option do something other than set an `int' to - a compiled-in constant, such as set a value from `optarg', set the - option's `flag' field to zero and its `val' field to a nonzero - value (the equivalent single-letter option character, if there is - one). For long options that have a zero `flag' field, `getopt' - returns the contents of the `val' field. */ - -struct option -{ -#if defined (__STDC__) && __STDC__ - const char *name; -#else - char *name; -#endif - /* has_arg can't be an enum because some compilers complain about - type mismatches in all the code that assumes it is an int. */ - int has_arg; - int *flag; - int val; -}; - -/* Names for the values of the `has_arg' field of `struct option'. */ - -#define no_argument 0 -#define required_argument 1 -#define optional_argument 2 - -#if defined (__STDC__) && __STDC__ -#ifdef __GNU_LIBRARY__ -/* Many other libraries have conflicting prototypes for getopt, with - differences in the consts, in stdlib.h. To avoid compilation - errors, only prototype getopt for the GNU C library. */ -extern int getopt (int argc, char *const *argv, const char *shortopts); -#else /* not __GNU_LIBRARY__ */ -extern int getopt (); -#endif /* __GNU_LIBRARY__ */ -extern int getopt_long (int argc, char *const *argv, const char *shortopts, - const struct option *longopts, int *longind); -extern int getopt_long_only (int argc, char *const *argv, - const char *shortopts, - const struct option *longopts, int *longind); - -/* Internal only. Users should not call this directly. */ -extern int _getopt_internal (int argc, char *const *argv, - const char *shortopts, - const struct option *longopts, int *longind, - int long_only); -#else /* not __STDC__ */ -extern int getopt (); -extern int getopt_long (); -extern int getopt_long_only (); - -extern int _getopt_internal (); -#endif /* __STDC__ */ - -#ifdef __cplusplus -} -#endif - -#endif /* _GETOPT_H */ diff --git a/lib/getopt1.c b/lib/getopt1.c deleted file mode 100644 index 86545f2e..00000000 --- a/lib/getopt1.c +++ /dev/null @@ -1,189 +0,0 @@ -/* getopt_long and getopt_long_only entry points for GNU getopt. - Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc. - -NOTE: The canonical source of this file is maintained with the GNU C Library. -Bugs can be reported to bug-glibc@prep.ai.mit.edu. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License along -with this program; if not, write to the Free Software Foundation, Inc., -51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include "getopt.h" - -#if !defined (__STDC__) || !__STDC__ -/* This is a separate conditional since some stdc systems - reject `defined (const)'. */ -#ifndef const -#define const -#endif -#endif - -#include - -/* Comment out all this code if we are using the GNU C Library, and are not - actually compiling the library itself. This code is part of the GNU C - Library, but also included in many other GNU distributions. Compiling - and linking in this code is a waste when using the GNU C library - (especially if it is a shared library). Rather than having every GNU - program understand `configure --with-gnu-libc' and omit the object files, - it is simpler to just do this in the source for each such file. */ - -#define GETOPT_INTERFACE_VERSION 2 -#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 -#include -#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION -#define ELIDE_CODE -#endif -#endif - -#ifndef ELIDE_CODE - - -/* This needs to come after some library #include - to get __GNU_LIBRARY__ defined. */ -#ifdef __GNU_LIBRARY__ -#include -#endif - -#ifndef NULL -#define NULL 0 -#endif - -int -getopt_long (argc, argv, options, long_options, opt_index) - int argc; - char *const *argv; - const char *options; - const struct option *long_options; - int *opt_index; -{ - return _getopt_internal (argc, argv, options, long_options, opt_index, 0); -} - -/* Like getopt_long, but '-' as well as '--' can indicate a long option. - If an option that starts with '-' (not '--') doesn't match a long option, - but does match a short option, it is parsed as a short option - instead. */ - -int -getopt_long_only (argc, argv, options, long_options, opt_index) - int argc; - char *const *argv; - const char *options; - const struct option *long_options; - int *opt_index; -{ - return _getopt_internal (argc, argv, options, long_options, opt_index, 1); -} - - -#endif /* Not ELIDE_CODE. */ - -#ifdef TEST - -#include - -int -main (argc, argv) - int argc; - char **argv; -{ - int c; - int digit_optind = 0; - - while (1) - { - int this_option_optind = optind ? optind : 1; - int option_index = 0; - static struct option long_options[] = - { - {"add", 1, 0, 0}, - {"append", 0, 0, 0}, - {"delete", 1, 0, 0}, - {"verbose", 0, 0, 0}, - {"create", 0, 0, 0}, - {"file", 1, 0, 0}, - {0, 0, 0, 0} - }; - - c = getopt_long (argc, argv, "abc:d:0123456789", - long_options, &option_index); - if (c == -1) - break; - - switch (c) - { - case 0: - printf ("option %s", long_options[option_index].name); - if (optarg) - printf (" with arg %s", optarg); - printf ("\n"); - break; - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if (digit_optind != 0 && digit_optind != this_option_optind) - printf ("digits occur in two different argv-elements.\n"); - digit_optind = this_option_optind; - printf ("option %c\n", c); - break; - - case 'a': - printf ("option a\n"); - break; - - case 'b': - printf ("option b\n"); - break; - - case 'c': - printf ("option c with value `%s'\n", optarg); - break; - - case 'd': - printf ("option d with value `%s'\n", optarg); - break; - - case '?': - break; - - default: - printf ("?? getopt returned character code 0%o ??\n", c); - } - } - - if (optind < argc) - { - printf ("non-option ARGV-elements: "); - while (optind < argc) - printf ("%s ", argv[optind++]); - printf ("\n"); - } - - exit (0); -} - -#endif /* TEST */ diff --git a/lib/ipv4.h b/lib/ipv4.h deleted file mode 100644 index 80ab17c5..00000000 --- a/lib/ipv4.h +++ /dev/null @@ -1,137 +0,0 @@ -/* - ipv4.h -- missing IPv4 related definitions - Copyright (C) 2005 Ivo Timmermans - 2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __TINC_IPV4_H__ -#define __TINC_IPV4_H__ - -#ifndef AF_INET -#define AF_INET 2 -#endif - -#ifndef IPPROTO_ICMP -#define IPPROTO_ICMP 1 -#endif - -#ifndef ICMP_DEST_UNREACH -#define ICMP_DEST_UNREACH 3 -#endif - -#ifndef ICMP_FRAG_NEEDED -#define ICMP_FRAG_NEEDED 4 -#endif - -#ifndef ICMP_NET_UNKNOWN -#define ICMP_NET_UNKNOWN 6 -#endif - -#ifndef ICMP_NET_UNREACH -#define ICMP_NET_UNREACH 0 -#endif - -#ifndef IP_MSS -#define IP_MSS 576 -#endif - -#ifndef HAVE_STRUCT_IP -struct ip { -#if __BYTE_ORDER == __LITTLE_ENDIAN - unsigned int ip_hl:4; - unsigned int ip_v:4; -#else - unsigned int ip_v:4; - unsigned int ip_hl:4; -#endif - uint8_t ip_tos; - uint16_t ip_len; - uint16_t ip_id; - uint16_t ip_off; -#define IP_RF 0x8000 -#define IP_DF 0x4000 -#define IP_MF 0x2000 - uint8_t ip_ttl; - uint8_t ip_p; - uint16_t ip_sum; - struct in_addr ip_src, ip_dst; -} __attribute__ ((__packed__)); -#endif - -#ifndef IP_OFFMASK -#define IP_OFFMASK 0x1fff -#endif - -#ifndef HAVE_STRUCT_ICMP -struct icmp { - uint8_t icmp_type; - uint8_t icmp_code; - uint16_t icmp_cksum; - union { - uint8_t ih_pptr; - struct in_addr ih_gwaddr; - struct ih_idseq { - uint16_t icd_id; - uint16_t icd_seq; - } ih_idseq; - uint32_t ih_void; - - - struct ih_pmtu { - uint16_t ipm_void; - uint16_t ipm_nextmtu; - } ih_pmtu; - - struct ih_rtradv { - uint8_t irt_num_addrs; - uint8_t irt_wpa; - uint16_t irt_lifetime; - } ih_rtradv; - } icmp_hun; -#define icmp_pptr icmp_hun.ih_pptr -#define icmp_gwaddr icmp_hun.ih_gwaddr -#define icmp_id icmp_hun.ih_idseq.icd_id -#define icmp_seq icmp_hun.ih_idseq.icd_seq -#define icmp_void icmp_hun.ih_void -#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void -#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu -#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs -#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa -#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime - union { - struct { - uint32_t its_otime; - uint32_t its_rtime; - uint32_t its_ttime; - } id_ts; - struct { - struct ip idi_ip; - } id_ip; - uint32_t id_mask; - uint8_t id_data[1]; - } icmp_dun; -#define icmp_otime icmp_dun.id_ts.its_otime -#define icmp_rtime icmp_dun.id_ts.its_rtime -#define icmp_ttime icmp_dun.id_ts.its_ttime -#define icmp_ip icmp_dun.id_ip.idi_ip -#define icmp_radv icmp_dun.id_radv -#define icmp_mask icmp_dun.id_mask -#define icmp_data icmp_dun.id_data -} __attribute__ ((__packed__)); -#endif - -#endif /* __TINC_IPV4_H__ */ diff --git a/lib/ipv6.h b/lib/ipv6.h deleted file mode 100644 index fee74f5e..00000000 --- a/lib/ipv6.h +++ /dev/null @@ -1,127 +0,0 @@ -/* - ipv6.h -- missing IPv6 related definitions - Copyright (C) 2005 Ivo Timmermans - 2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __TINC_IPV6_H__ -#define __TINC_IPV6_H__ - -#ifndef AF_INET6 -#define AF_INET6 10 -#endif - -#ifndef IPPROTO_ICMPV6 -#define IPPROTO_ICMPV6 58 -#endif - -#ifndef HAVE_STRUCT_IN6_ADDR -struct in6_addr { - union { - uint8_t u6_addr8[16]; - uint16_t u6_addr16[8]; - uint32_t u6_addr32[4]; - } in6_u; -} __attribute__ ((__packed__)); -#define s6_addr in6_u.u6_addr8 -#define s6_addr16 in6_u.u6_addr16 -#define s6_addr32 in6_u.u6_addr32 -#endif - -#ifndef HAVE_STRUCT_SOCKADDR_IN6 -struct sockaddr_in6 { - uint16_t sin6_family; - uint16_t sin6_port; - uint32_t sin6_flowinfo; - struct in6_addr sin6_addr; - uint32_t sin6_scope_id; -} __attribute__ ((__packed__)); -#endif - -#ifndef IN6_IS_ADDR_V4MAPPED -#define IN6_IS_ADDR_V4MAPPED(a) \ - ((((__const uint32_t *) (a))[0] == 0) \ - && (((__const uint32_t *) (a))[1] == 0) \ - && (((__const uint32_t *) (a))[2] == htonl (0xffff))) -#endif - -#ifndef HAVE_STRUCT_IP6_HDR -struct ip6_hdr { - union { - struct ip6_hdrctl { - uint32_t ip6_un1_flow; - uint16_t ip6_un1_plen; - uint8_t ip6_un1_nxt; - uint8_t ip6_un1_hlim; - } ip6_un1; - uint8_t ip6_un2_vfc; - } ip6_ctlun; - struct in6_addr ip6_src; - struct in6_addr ip6_dst; -} __attribute__ ((__packed__)); -#define ip6_vfc ip6_ctlun.ip6_un2_vfc -#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow -#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen -#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt -#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim -#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim -#endif - -#ifndef HAVE_STRUCT_ICMP6_HDR -struct icmp6_hdr { - uint8_t icmp6_type; - uint8_t icmp6_code; - uint16_t icmp6_cksum; - union { - uint32_t icmp6_un_data32[1]; - uint16_t icmp6_un_data16[2]; - uint8_t icmp6_un_data8[4]; - } icmp6_dataun; -} __attribute__ ((__packed__)); -#define ICMP6_DST_UNREACH_NOROUTE 0 -#define ICMP6_DST_UNREACH 1 -#define ICMP6_PACKET_TOO_BIG 2 -#define ICMP6_DST_UNREACH_ADDR 3 -#define ND_NEIGHBOR_SOLICIT 135 -#define ND_NEIGHBOR_ADVERT 136 -#define icmp6_data32 icmp6_dataun.icmp6_un_data32 -#define icmp6_data16 icmp6_dataun.icmp6_un_data16 -#define icmp6_data8 icmp6_dataun.icmp6_un_data8 -#define icmp6_mtu icmp6_data32[0] -#endif - -#ifndef HAVE_STRUCT_ND_NEIGHBOR_SOLICIT -struct nd_neighbor_solicit { - struct icmp6_hdr nd_ns_hdr; - struct in6_addr nd_ns_target; -} __attribute__ ((__packed__)); -#define ND_OPT_SOURCE_LINKADDR 1 -#define ND_OPT_TARGET_LINKADDR 2 -#define nd_ns_type nd_ns_hdr.icmp6_type -#define nd_ns_code nd_ns_hdr.icmp6_code -#define nd_ns_cksum nd_ns_hdr.icmp6_cksum -#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] -#endif - -#ifndef HAVE_STRUCT_ND_OPT_HDR -struct nd_opt_hdr { - uint8_t nd_opt_type; - uint8_t nd_opt_len; -} __attribute__ ((__packed__)); -#endif - -#endif /* __TINC_IPV6_H__ */ diff --git a/lib/list.c b/lib/list.c deleted file mode 100644 index a26c58d6..00000000 --- a/lib/list.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - list.c -- functions to deal with double linked lists - Copyright (C) 2000-2005 Ivo Timmermans - 2000-2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#include "system.h" - -#include "list.h" -#include "xalloc.h" - -/* (De)constructors */ - -list_t *list_alloc(list_action_t delete) { - list_t *list; - - list = xmalloc_and_zero(sizeof(list_t)); - list->delete = delete; - - return list; -} - -void list_free(list_t *list) { - free(list); -} - -list_node_t *list_alloc_node(void) { - return xmalloc_and_zero(sizeof(list_node_t)); -} - -void list_free_node(list_t *list, list_node_t *node) { - if(node->data && list->delete) - list->delete(node->data); - - free(node); -} - -/* Insertion and deletion */ - -list_node_t *list_insert_head(list_t *list, void *data) { - list_node_t *node; - - node = list_alloc_node(); - - node->data = data; - node->prev = NULL; - node->next = list->head; - list->head = node; - - if(node->next) - node->next->prev = node; - else - list->tail = node; - - list->count++; - - return node; -} - -list_node_t *list_insert_tail(list_t *list, void *data) { - list_node_t *node; - - node = list_alloc_node(); - - node->data = data; - node->next = NULL; - node->prev = list->tail; - list->tail = node; - - if(node->prev) - node->prev->next = node; - else - list->head = node; - - list->count++; - - return node; -} - -void list_unlink_node(list_t *list, list_node_t *node) { - if(node->prev) - node->prev->next = node->next; - else - list->head = node->next; - - if(node->next) - node->next->prev = node->prev; - else - list->tail = node->prev; - - list->count--; -} - -void list_delete_node(list_t *list, list_node_t *node) { - list_unlink_node(list, node); - list_free_node(list, node); -} - -void list_delete_head(list_t *list) { - list_delete_node(list, list->head); -} - -void list_delete_tail(list_t *list) { - list_delete_node(list, list->tail); -} - -/* Head/tail lookup */ - -void *list_get_head(list_t *list) { - if(list->head) - return list->head->data; - else - return NULL; -} - -void *list_get_tail(list_t *list) { - if(list->tail) - return list->tail->data; - else - return NULL; -} - -/* Fast list deletion */ - -void list_delete_list(list_t *list) { - list_node_t *node, *next; - - for(node = list->head; node; node = next) { - next = node->next; - list_free_node(list, node); - } - - list_free(list); -} - -/* Traversing */ - -void list_foreach_node(list_t *list, list_action_node_t action) { - list_node_t *node, *next; - - for(node = list->head; node; node = next) { - next = node->next; - action(node); - } -} - -void list_foreach(list_t *list, list_action_t action) { - list_node_t *node, *next; - - for(node = list->head; node; node = next) { - next = node->next; - if(node->data) - action(node->data); - } -} diff --git a/lib/list.h b/lib/list.h deleted file mode 100644 index 197fbb8b..00000000 --- a/lib/list.h +++ /dev/null @@ -1,78 +0,0 @@ -/* - list.h -- header file for list.c - Copyright (C) 2000-2005 Ivo Timmermans - 2000-2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __TINC_LIST_H__ -#define __TINC_LIST_H__ - -typedef struct list_node_t { - struct list_node_t *prev; - struct list_node_t *next; - - /* Payload */ - - void *data; -} list_node_t; - -typedef void (*list_action_t)(const void *); -typedef void (*list_action_node_t)(const list_node_t *); - -typedef struct list_t { - list_node_t *head; - list_node_t *tail; - int count; - - /* Callbacks */ - - list_action_t delete; -} list_t; - -/* (De)constructors */ - -extern list_t *list_alloc(list_action_t) __attribute__ ((__malloc__)); -extern void list_free(list_t *); -extern list_node_t *list_alloc_node(void); -extern void list_free_node(list_t *, list_node_t *); - -/* Insertion and deletion */ - -extern list_node_t *list_insert_head(list_t *, void *); -extern list_node_t *list_insert_tail(list_t *, void *); - -extern void list_unlink_node(list_t *, list_node_t *); -extern void list_delete_node(list_t *, list_node_t *); - -extern void list_delete_head(list_t *); -extern void list_delete_tail(list_t *); - -/* Head/tail lookup */ - -extern void *list_get_head(list_t *); -extern void *list_get_tail(list_t *); - -/* Fast list deletion */ - -extern void list_delete_list(list_t *); - -/* Traversing */ - -extern void list_foreach(list_t *, list_action_t); -extern void list_foreach_node(list_t *, list_action_node_t); - -#endif /* __TINC_LIST_H__ */ diff --git a/lib/malloc.c b/lib/malloc.c deleted file mode 100644 index 2a996d44..00000000 --- a/lib/malloc.c +++ /dev/null @@ -1,39 +0,0 @@ -/* Work around bug on some systems where malloc (0) fails. - Copyright (C) 1997 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., Foundation, - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ - -/* written by Jim Meyering */ - -#if HAVE_CONFIG_H -# include -#endif -#undef malloc - -#include - -char *malloc (); - -/* Allocate an N-byte block of memory from the heap. - If N is zero, allocate a 1-byte block. */ - -char * -rpl_malloc (n) - size_t n; -{ - if (n == 0) - n = 1; - return malloc (n); -} diff --git a/lib/memcmp.c b/lib/memcmp.c deleted file mode 100644 index 9d808338..00000000 --- a/lib/memcmp.c +++ /dev/null @@ -1,391 +0,0 @@ -/* Copyright (C) 1991, 1993, 1995, 1997, 1998 Free Software Foundation, Inc. - Contributed by Torbjorn Granlund (tege@sics.se). - - NOTE: The canonical source of this file is maintained with the GNU C Library. - Bugs can be reported to bug-glibc@prep.ai.mit.edu. - - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; either version 2, or (at your option) any - later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#undef __ptr_t -#if defined __cplusplus || (defined __STDC__ && __STDC__) -# define __ptr_t void * -#else /* Not C++ or ANSI C. */ -# undef const -# define const -# define __ptr_t char * -#endif /* C++ or ANSI C. */ - -#ifndef __P -# if defined __GNUC__ || (defined __STDC__ && __STDC__) -# define __P(args) args -# else -# define __P(args) () -# endif /* GCC. */ -#endif /* Not __P. */ - -#if defined HAVE_STRING_H || defined _LIBC -# include -#endif - -#undef memcmp - -#ifdef _LIBC - -# include - -#else /* Not in the GNU C library. */ - -# include - -/* Type to use for aligned memory operations. - This should normally be the biggest type supported by a single load - and store. Must be an unsigned type. */ -# define op_t unsigned long int -# define OPSIZ (sizeof(op_t)) - -/* Threshold value for when to enter the unrolled loops. */ -# define OP_T_THRES 16 - -/* Type to use for unaligned operations. */ -typedef unsigned char byte; - -# ifndef WORDS_BIGENDIAN -# define MERGE(w0, sh_1, w1, sh_2) (((w0) >> (sh_1)) | ((w1) << (sh_2))) -# else -# define MERGE(w0, sh_1, w1, sh_2) (((w0) << (sh_1)) | ((w1) >> (sh_2))) -# endif - -#endif /* In the GNU C library. */ - -#ifdef WORDS_BIGENDIAN -# define CMP_LT_OR_GT(a, b) ((a) > (b) ? 1 : -1) -#else -# define CMP_LT_OR_GT(a, b) memcmp_bytes ((a), (b)) -#endif - -/* BE VERY CAREFUL IF YOU CHANGE THIS CODE! */ - -/* The strategy of this memcmp is: - - 1. Compare bytes until one of the block pointers is aligned. - - 2. Compare using memcmp_common_alignment or - memcmp_not_common_alignment, regarding the alignment of the other - block after the initial byte operations. The maximum number of - full words (of type op_t) are compared in this way. - - 3. Compare the few remaining bytes. */ - -#ifndef WORDS_BIGENDIAN -/* memcmp_bytes -- Compare A and B bytewise in the byte order of the machine. - A and B are known to be different. - This is needed only on little-endian machines. */ - -static int memcmp_bytes __P((op_t, op_t)); - -# ifdef __GNUC__ -__inline -# endif -static int -memcmp_bytes (a, b) - op_t a, b; -{ - long int srcp1 = (long int) &a; - long int srcp2 = (long int) &b; - op_t a0, b0; - - do - { - a0 = ((byte *) srcp1)[0]; - b0 = ((byte *) srcp2)[0]; - srcp1 += 1; - srcp2 += 1; - } - while (a0 == b0); - return a0 - b0; -} -#endif - -static int memcmp_common_alignment __P((long, long, size_t)); - -/* memcmp_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN `op_t' - objects (not LEN bytes!). Both SRCP1 and SRCP2 should be aligned for - memory operations on `op_t's. */ -#ifdef __GNUC__ -__inline -#endif -static int -memcmp_common_alignment (srcp1, srcp2, len) - long int srcp1; - long int srcp2; - size_t len; -{ - op_t a0, a1; - op_t b0, b1; - - switch (len % 4) - { - default: /* Avoid warning about uninitialized local variables. */ - case 2: - a0 = ((op_t *) srcp1)[0]; - b0 = ((op_t *) srcp2)[0]; - srcp1 -= 2 * OPSIZ; - srcp2 -= 2 * OPSIZ; - len += 2; - goto do1; - case 3: - a1 = ((op_t *) srcp1)[0]; - b1 = ((op_t *) srcp2)[0]; - srcp1 -= OPSIZ; - srcp2 -= OPSIZ; - len += 1; - goto do2; - case 0: - if (OP_T_THRES <= 3 * OPSIZ && len == 0) - return 0; - a0 = ((op_t *) srcp1)[0]; - b0 = ((op_t *) srcp2)[0]; - goto do3; - case 1: - a1 = ((op_t *) srcp1)[0]; - b1 = ((op_t *) srcp2)[0]; - srcp1 += OPSIZ; - srcp2 += OPSIZ; - len -= 1; - if (OP_T_THRES <= 3 * OPSIZ && len == 0) - goto do0; - /* Fall through. */ - } - - do - { - a0 = ((op_t *) srcp1)[0]; - b0 = ((op_t *) srcp2)[0]; - if (a1 != b1) - return CMP_LT_OR_GT (a1, b1); - - do3: - a1 = ((op_t *) srcp1)[1]; - b1 = ((op_t *) srcp2)[1]; - if (a0 != b0) - return CMP_LT_OR_GT (a0, b0); - - do2: - a0 = ((op_t *) srcp1)[2]; - b0 = ((op_t *) srcp2)[2]; - if (a1 != b1) - return CMP_LT_OR_GT (a1, b1); - - do1: - a1 = ((op_t *) srcp1)[3]; - b1 = ((op_t *) srcp2)[3]; - if (a0 != b0) - return CMP_LT_OR_GT (a0, b0); - - srcp1 += 4 * OPSIZ; - srcp2 += 4 * OPSIZ; - len -= 4; - } - while (len != 0); - - /* This is the right position for do0. Please don't move - it into the loop. */ - do0: - if (a1 != b1) - return CMP_LT_OR_GT (a1, b1); - return 0; -} - -static int memcmp_not_common_alignment __P((long, long, size_t)); - -/* memcmp_not_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN - `op_t' objects (not LEN bytes!). SRCP2 should be aligned for memory - operations on `op_t', but SRCP1 *should be unaligned*. */ -#ifdef __GNUC__ -__inline -#endif -static int -memcmp_not_common_alignment (srcp1, srcp2, len) - long int srcp1; - long int srcp2; - size_t len; -{ - op_t a0, a1, a2, a3; - op_t b0, b1, b2, b3; - op_t x; - int shl, shr; - - /* Calculate how to shift a word read at the memory operation - aligned srcp1 to make it aligned for comparison. */ - - shl = 8 * (srcp1 % OPSIZ); - shr = 8 * OPSIZ - shl; - - /* Make SRCP1 aligned by rounding it down to the beginning of the `op_t' - it points in the middle of. */ - srcp1 &= -OPSIZ; - - switch (len % 4) - { - default: /* Avoid warning about uninitialized local variables. */ - case 2: - a1 = ((op_t *) srcp1)[0]; - a2 = ((op_t *) srcp1)[1]; - b2 = ((op_t *) srcp2)[0]; - srcp1 -= 1 * OPSIZ; - srcp2 -= 2 * OPSIZ; - len += 2; - goto do1; - case 3: - a0 = ((op_t *) srcp1)[0]; - a1 = ((op_t *) srcp1)[1]; - b1 = ((op_t *) srcp2)[0]; - srcp2 -= 1 * OPSIZ; - len += 1; - goto do2; - case 0: - if (OP_T_THRES <= 3 * OPSIZ && len == 0) - return 0; - a3 = ((op_t *) srcp1)[0]; - a0 = ((op_t *) srcp1)[1]; - b0 = ((op_t *) srcp2)[0]; - srcp1 += 1 * OPSIZ; - goto do3; - case 1: - a2 = ((op_t *) srcp1)[0]; - a3 = ((op_t *) srcp1)[1]; - b3 = ((op_t *) srcp2)[0]; - srcp1 += 2 * OPSIZ; - srcp2 += 1 * OPSIZ; - len -= 1; - if (OP_T_THRES <= 3 * OPSIZ && len == 0) - goto do0; - /* Fall through. */ - } - - do - { - a0 = ((op_t *) srcp1)[0]; - b0 = ((op_t *) srcp2)[0]; - x = MERGE(a2, shl, a3, shr); - if (x != b3) - return CMP_LT_OR_GT (x, b3); - - do3: - a1 = ((op_t *) srcp1)[1]; - b1 = ((op_t *) srcp2)[1]; - x = MERGE(a3, shl, a0, shr); - if (x != b0) - return CMP_LT_OR_GT (x, b0); - - do2: - a2 = ((op_t *) srcp1)[2]; - b2 = ((op_t *) srcp2)[2]; - x = MERGE(a0, shl, a1, shr); - if (x != b1) - return CMP_LT_OR_GT (x, b1); - - do1: - a3 = ((op_t *) srcp1)[3]; - b3 = ((op_t *) srcp2)[3]; - x = MERGE(a1, shl, a2, shr); - if (x != b2) - return CMP_LT_OR_GT (x, b2); - - srcp1 += 4 * OPSIZ; - srcp2 += 4 * OPSIZ; - len -= 4; - } - while (len != 0); - - /* This is the right position for do0. Please don't move - it into the loop. */ - do0: - x = MERGE(a2, shl, a3, shr); - if (x != b3) - return CMP_LT_OR_GT (x, b3); - return 0; -} - -int -rpl_memcmp (s1, s2, len) - const __ptr_t s1; - const __ptr_t s2; - size_t len; -{ - op_t a0; - op_t b0; - long int srcp1 = (long int) s1; - long int srcp2 = (long int) s2; - op_t res; - - if (len >= OP_T_THRES) - { - /* There are at least some bytes to compare. No need to test - for LEN == 0 in this alignment loop. */ - while (srcp2 % OPSIZ != 0) - { - a0 = ((byte *) srcp1)[0]; - b0 = ((byte *) srcp2)[0]; - srcp1 += 1; - srcp2 += 1; - res = a0 - b0; - if (res != 0) - return res; - len -= 1; - } - - /* SRCP2 is now aligned for memory operations on `op_t'. - SRCP1 alignment determines if we can do a simple, - aligned compare or need to shuffle bits. */ - - if (srcp1 % OPSIZ == 0) - res = memcmp_common_alignment (srcp1, srcp2, len / OPSIZ); - else - res = memcmp_not_common_alignment (srcp1, srcp2, len / OPSIZ); - if (res != 0) - return res; - - /* Number of bytes remaining in the interval [0..OPSIZ-1]. */ - srcp1 += len & -OPSIZ; - srcp2 += len & -OPSIZ; - len %= OPSIZ; - } - - /* There are just a few bytes to compare. Use byte memory operations. */ - while (len != 0) - { - a0 = ((byte *) srcp1)[0]; - b0 = ((byte *) srcp2)[0]; - srcp1 += 1; - srcp2 += 1; - res = a0 - b0; - if (res != 0) - return res; - len -= 1; - } - - return 0; -} - -#ifdef weak_alias -# undef bcmp -weak_alias (memcmp, bcmp) -#endif diff --git a/lib/realloc.c b/lib/realloc.c deleted file mode 100644 index 4971b28f..00000000 --- a/lib/realloc.c +++ /dev/null @@ -1,44 +0,0 @@ -/* Work around bug on some systems where realloc (NULL, 0) fails. - Copyright (C) 1997 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., Foundation, - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ - -/* written by Jim Meyering */ - -#if HAVE_CONFIG_H -# include -#endif -#undef realloc - -#include - -char *malloc (); -char *realloc (); - -/* Change the size of an allocated block of memory P to N bytes, - with error checking. If N is zero, change it to 1. If P is NULL, - use malloc. */ - -char * -rpl_realloc (p, n) - char *p; - size_t n; -{ - if (n == 0) - n = 1; - if (p == 0) - return malloc (n); - return realloc (p, n); -} diff --git a/lib/splay_tree.c b/lib/splay_tree.c deleted file mode 100644 index 3a792e8b..00000000 --- a/lib/splay_tree.c +++ /dev/null @@ -1,561 +0,0 @@ -/* - splay_tree.c -- splay tree and linked list convenience - Copyright (C) 2004-2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#include "system.h" - -#include "splay_tree.h" -#include "xalloc.h" - -/* Splay operation */ - -static splay_node_t *splay_top_down(splay_tree_t *tree, const void *data, int *result) { - splay_node_t left = {0}, right = {0}; - splay_node_t *leftbottom = &left, *rightbottom = &right, *child, *grandchild; - splay_node_t *root = tree->root; - int c; - - if(!root) { - if(result) - *result = 0; - return NULL; - } - - while((c = tree->compare(data, root->data))) { - if(c < 0 && (child = root->left)) { - c = tree->compare(data, child->data); - - if(c < 0 && (grandchild = child->left)) { - rightbottom->left = child; - child->parent = rightbottom; - rightbottom = child; - - if((root->left = child->right)) - child->right->parent = root; - - child->right = root; - root->parent = child; - - child->left = NULL; - grandchild->parent = NULL; - - root = grandchild; - } else if (c > 0 && (grandchild = child->right)) { - leftbottom->right = child; - child->parent = leftbottom; - leftbottom = child; - - child->right = NULL; - grandchild->parent = NULL; - - rightbottom->left = root; - root->parent = rightbottom; - rightbottom = root; - - root->left = NULL; - - root = grandchild; - } else { - rightbottom->left = root; - root->parent = rightbottom; - rightbottom = root; - - root->left = NULL; - child->parent = NULL; - - root = child; - break; - } - } else if(c > 0 && (child = root->right)) { - c = tree->compare(data, child->data); - - if(c > 0 && (grandchild = child->right)) { - leftbottom->right = child; - child->parent = leftbottom; - leftbottom = child; - - if((root->right = child->left)) - child->left->parent = root; - - child->left = root; - root->parent = child; - - child->right = NULL; - grandchild->parent = NULL; - - root = grandchild; - } else if (c < 0 && (grandchild = child->left)) { - rightbottom->left = child; - child->parent = rightbottom; - rightbottom = child; - - child->left = NULL; - grandchild->parent = NULL; - - leftbottom->right = root; - root->parent = leftbottom; - leftbottom = root; - - root->right = NULL; - - root = grandchild; - } else { - leftbottom->right = root; - root->parent = leftbottom; - leftbottom = root; - - root->right = NULL; - child->parent = NULL; - - root = child; - break; - } - } else { - break; - } - } - - /* Merge trees */ - - if(left.right) { - if(root->left) { - leftbottom->right = root->left; - root->left->parent = leftbottom; - } - root->left = left.right; - left.right->parent = root; - } - - if(right.left) { - if(root->right) { - rightbottom->left = root->right; - root->right->parent = rightbottom; - } - root->right = right.left; - right.left->parent = root; - } - - /* Return result */ - - tree->root = root; - if(result) - *result = c; - - return tree->root; -} - -static void splay_bottom_up(splay_tree_t *tree, splay_node_t *node) { - splay_node_t *parent, *grandparent, *greatgrandparent; - - while((parent = node->parent)) { - if(!(grandparent = parent->parent)) { /* zig */ - if(node == parent->left) { - if((parent->left = node->right)) - parent->left->parent = parent; - node->right = parent; - } else { - if((parent->right = node->left)) - parent->right->parent = parent; - node->left = parent; - } - - parent->parent = node; - node->parent = NULL; - } else { - greatgrandparent = grandparent->parent; - - if(node == parent->left && parent == grandparent->left) { /* left zig-zig */ - if((grandparent->left = parent->right)) - grandparent->left->parent = grandparent; - parent->right = grandparent; - grandparent->parent = parent; - - if((parent->left = node->right)) - parent->left->parent = parent; - node->right = parent; - parent->parent = node; - } else if(node == parent->right && parent == grandparent->right) { /* right zig-zig */ - if((grandparent->right = parent->left)) - grandparent->right->parent = grandparent; - parent->left = grandparent; - grandparent->parent = parent; - - if((parent->right = node->left)) - parent->right->parent = parent; - node->left = parent; - parent->parent = node; - } else if(node == parent->right && parent == grandparent->left) { /* left-right zig-zag */ - if((parent->right = node->left)) - parent->right->parent = parent; - node->left = parent; - parent->parent = node; - - if((grandparent->left = node->right)) - grandparent->left->parent = grandparent; - node->right = grandparent; - grandparent->parent = node; - } else { /* right-left zig-zag */ - if((parent->left = node->right)) - parent->left->parent = parent; - node->right = parent; - parent->parent = node; - - if((grandparent->right = node->left)) - grandparent->right->parent = grandparent; - node->left = grandparent; - grandparent->parent = node; - } - - if((node->parent = greatgrandparent)) { - if(grandparent == greatgrandparent->left) - greatgrandparent->left = node; - else - greatgrandparent->right = node; - } - } - } - - tree->root = node; -} - -/* (De)constructors */ - -splay_tree_t *splay_alloc_tree(splay_compare_t compare, splay_action_t delete) { - splay_tree_t *tree; - - tree = xmalloc_and_zero(sizeof(splay_tree_t)); - tree->compare = compare; - tree->delete = delete; - - return tree; -} - -void splay_free_tree(splay_tree_t *tree) { - free(tree); -} - -splay_node_t *splay_alloc_node(void) { - return xmalloc_and_zero(sizeof(splay_node_t)); -} - -void splay_free_node(splay_tree_t *tree, splay_node_t *node) { - if(node->data && tree->delete) - tree->delete(node->data); - - free(node); -} - -/* Searching */ - -void *splay_search(splay_tree_t *tree, const void *data) { - splay_node_t *node; - - node = splay_search_node(tree, data); - - return node ? node->data : NULL; -} - -void *splay_search_closest(splay_tree_t *tree, const void *data, int *result) { - splay_node_t *node; - - node = splay_search_closest_node(tree, data, result); - - return node ? node->data : NULL; -} - -void *splay_search_closest_smaller(splay_tree_t *tree, const void *data) { - splay_node_t *node; - - node = splay_search_closest_smaller_node(tree, data); - - return node ? node->data : NULL; -} - -void *splay_search_closest_greater(splay_tree_t *tree, const void *data) { - splay_node_t *node; - - node = splay_search_closest_greater_node(tree, data); - - return node ? node->data : NULL; -} - -splay_node_t *splay_search_node(splay_tree_t *tree, const void *data) { - splay_node_t *node; - int result; - - node = splay_search_closest_node(tree, data, &result); - - return result ? NULL : node; -} - -splay_node_t *splay_search_closest_node_nosplay(const splay_tree_t *tree, const void *data, int *result) { - splay_node_t *node; - int c; - - node = tree->root; - - if(!node) { - if(result) - *result = 0; - return NULL; - } - - for(;;) { - c = tree->compare(data, node->data); - - if(c < 0) { - if(node->left) - node = node->left; - else - break; - } else if(c > 0) { - if(node->right) - node = node->right; - else - break; - } else { - break; - } - } - - if(result) - *result = c; - return node; -} - -splay_node_t *splay_search_closest_node(splay_tree_t *tree, const void *data, int *result) { - return splay_top_down(tree, data, result); -} - -splay_node_t *splay_search_closest_smaller_node(splay_tree_t *tree, const void *data) { - splay_node_t *node; - int result; - - node = splay_search_closest_node(tree, data, &result); - - if(result < 0) - node = node->prev; - - return node; -} - -splay_node_t *splay_search_closest_greater_node(splay_tree_t *tree, const void *data) { - splay_node_t *node; - int result; - - node = splay_search_closest_node(tree, data, &result); - - if(result > 0) - node = node->next; - - return node; -} - -/* Insertion and deletion */ - -splay_node_t *splay_insert(splay_tree_t *tree, void *data) { - splay_node_t *closest, *new; - int result; - - if(!tree->root) { - new = splay_alloc_node(); - new->data = data; - splay_insert_top(tree, new); - } else { - closest = splay_search_closest_node(tree, data, &result); - - if(!result) - return NULL; - - new = splay_alloc_node(); - new->data = data; - - if(result < 0) - splay_insert_before(tree, closest, new); - else - splay_insert_after(tree, closest, new); - } - - return new; -} - -splay_node_t *splay_insert_node(splay_tree_t *tree, splay_node_t *node) { - splay_node_t *closest; - int result; - - if(!tree->root) - splay_insert_top(tree, node); - else { - closest = splay_search_closest_node(tree, node->data, &result); - - if(!result) - return NULL; - - if(result < 0) - splay_insert_before(tree, closest, node); - else - splay_insert_after(tree, closest, node); - } - - return node; -} - -void splay_insert_top(splay_tree_t *tree, splay_node_t *node) { - node->prev = node->next = node->left = node->right = node->parent = NULL; - tree->head = tree->tail = tree->root = node; -} - -void splay_insert_before(splay_tree_t *tree, splay_node_t *before, splay_node_t *node) { - if(!before) { - if(tree->tail) - splay_insert_after(tree, tree->tail, node); - else - splay_insert_top(tree, node); - return; - } - - node->next = before; - if((node->prev = before->prev)) - before->prev->next = node; - else - tree->head = node; - before->prev = node; - - splay_bottom_up(tree, before); - - node->right = before; - before->parent = node; - if((node->left = before->left)) - before->left->parent = node; - before->left = NULL; - - node->parent = NULL; - tree->root = node; -} - -void splay_insert_after(splay_tree_t *tree, splay_node_t *after, splay_node_t *node) { - if(!after) { - if(tree->head) - splay_insert_before(tree, tree->head, node); - else - splay_insert_top(tree, node); - return; - } - - node->prev = after; - if((node->next = after->next)) - after->next->prev = node; - else - tree->tail = node; - after->next = node; - - splay_bottom_up(tree, after); - - node->left = after; - after->parent = node; - if((node->right = after->right)) - after->right->parent = node; - after->right = NULL; - - node->parent = NULL; - tree->root = node; -} - -splay_node_t *splay_unlink(splay_tree_t *tree, void *data) { - splay_node_t *node; - - node = splay_search_node(tree, data); - - if(node) - splay_unlink_node(tree, node); - - return node; -} - -void splay_unlink_node(splay_tree_t *tree, splay_node_t *node) { - if(node->prev) - node->prev->next = node->next; - else - tree->head = node->next; - - if(node->next) - node->next->prev = node->prev; - else - tree->tail = node->prev; - - splay_bottom_up(tree, node); - - if(node->prev) { - node->left->parent = NULL; - tree->root = node->left; - if((node->prev->right = node->right)) - node->right->parent = node->prev; - } else if(node->next) { - tree->root = node->right; - node->right->parent = NULL; - } else { - tree->root = NULL; - } -} - -void splay_delete_node(splay_tree_t *tree, splay_node_t *node) { - splay_unlink_node(tree, node); - splay_free_node(tree, node); -} - -void splay_delete(splay_tree_t *tree, void *data) { - splay_node_t *node; - - node = splay_search_node(tree, data); - - if(node) - splay_delete_node(tree, node); -} - -/* Fast tree cleanup */ - -void splay_delete_tree(splay_tree_t *tree) { - splay_node_t *node, *next; - - for(node = tree->head; node; node = next) { - next = node->next; - splay_free_node(tree, node); - } - - splay_free_tree(tree); -} - -/* Tree walking */ - -void splay_foreach(const splay_tree_t *tree, splay_action_t action) { - splay_node_t *node, *next; - - for(node = tree->head; node; node = next) { - next = node->next; - action(node->data); - } -} - -void splay_foreach_node(const splay_tree_t *tree, splay_action_t action) { - splay_node_t *node, *next; - - for(node = tree->head; node; node = next) { - next = node->next; - action(node); - } -} diff --git a/lib/splay_tree.h b/lib/splay_tree.h deleted file mode 100644 index e4af0c4f..00000000 --- a/lib/splay_tree.h +++ /dev/null @@ -1,107 +0,0 @@ -/* - splay_tree.h -- header file for splay_tree.c - Copyright (C) 2004-2006 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - - -#ifndef __SPLAY_TREE_H__ -#define __SPLAY_TREE_H__ - -typedef struct splay_node_t { - - /* Linked list part */ - - struct splay_node_t *next; - struct splay_node_t *prev; - - /* Tree part */ - - struct splay_node_t *parent; - struct splay_node_t *left; - struct splay_node_t *right; - - /* Payload */ - - void *data; - -} splay_node_t; - -typedef int (*splay_compare_t)(const void *, const void *); -typedef void (*splay_action_t)(const void *); -typedef void (*splay_action_node_t)(const splay_node_t *); - -typedef struct splay_tree_t { - - /* Linked list part */ - - splay_node_t *head; - splay_node_t *tail; - - /* Tree part */ - - splay_node_t *root; - - splay_compare_t compare; - splay_action_t delete; - -} splay_tree_t; - -/* (De)constructors */ - -extern splay_tree_t *splay_alloc_tree(splay_compare_t, splay_action_t); -extern void splay_free_tree(splay_tree_t *); - -extern splay_node_t *splay_alloc_node(void); -extern void splay_free_node(splay_tree_t *tree, splay_node_t *); - -/* Insertion and deletion */ - -extern splay_node_t *splay_insert(splay_tree_t *, void *); -extern splay_node_t *splay_insert_node(splay_tree_t *, splay_node_t *); - -extern void splay_insert_top(splay_tree_t *, splay_node_t *); -extern void splay_insert_before(splay_tree_t *, splay_node_t *, splay_node_t *); -extern void splay_insert_after(splay_tree_t *, splay_node_t *, splay_node_t *); - -extern splay_node_t *splay_unlink(splay_tree_t *, void *); -extern void splay_unlink_node(splay_tree_t *tree, splay_node_t *); -extern void splay_delete(splay_tree_t *, void *); -extern void splay_delete_node(splay_tree_t *, splay_node_t *); - -/* Fast tree cleanup */ - -extern void splay_delete_tree(splay_tree_t *); - -/* Searching */ - -extern void *splay_search(splay_tree_t *, const void *); -extern void *splay_search_closest(splay_tree_t *, const void *, int *); -extern void *splay_search_closest_smaller(splay_tree_t *, const void *); -extern void *splay_search_closest_greater(splay_tree_t *, const void *); - -extern splay_node_t *splay_search_node(splay_tree_t *, const void *); -extern splay_node_t *splay_search_closest_node(splay_tree_t *, const void *, int *); -extern splay_node_t *splay_search_closest_node_nosplay(const splay_tree_t *, const void *, int *); -extern splay_node_t *splay_search_closest_smaller_node(splay_tree_t *, const void *); -extern splay_node_t *splay_search_closest_greater_node(splay_tree_t *, const void *); - -/* Tree walking */ - -extern void splay_foreach(const splay_tree_t *, splay_action_t); -extern void splay_foreach_node(const splay_tree_t *, splay_action_t); - -#endif diff --git a/lib/utils.c b/lib/utils.c deleted file mode 100644 index dd7e4de2..00000000 --- a/lib/utils.c +++ /dev/null @@ -1,76 +0,0 @@ -/* - utils.c -- gathering of some stupid small functions - Copyright (C) 1999-2005 Ivo Timmermans - 2000-2009 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#include "system.h" - -#include "../src/logger.h" -#include "utils.h" - -const char hexadecimals[] = "0123456789ABCDEF"; - -int charhex2bin(char c) { - if(isdigit(c)) - return c - '0'; - else - return toupper(c) - 'A' + 10; -} - - -void hex2bin(char *src, char *dst, int length) { - int i; - for(i = 0; i < length; i++) - dst[i] = charhex2bin(src[i * 2]) * 16 + charhex2bin(src[i * 2 + 1]); -} - -void bin2hex(char *src, char *dst, int length) { - int i; - for(i = length - 1; i >= 0; i--) { - dst[i * 2 + 1] = hexadecimals[(unsigned char) src[i] & 15]; - dst[i * 2] = hexadecimals[(unsigned char) src[i] >> 4]; - } -} - -#if defined(HAVE_MINGW) || defined(HAVE_CYGWIN) -#ifdef HAVE_CYGWIN -#include -#endif - -const char *winerror(int err) { - static char buf[1024], *newline; - - if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, sizeof(buf), NULL)) { - strncpy(buf, "(unable to format errormessage)", sizeof(buf)); - }; - - if((newline = strchr(buf, '\r'))) - *newline = '\0'; - - return buf; -} -#endif - -unsigned int bitfield_to_int(void *bitfield, size_t size) { - unsigned int value = 0; - if(size > sizeof value) - size = sizeof value; - memcpy(&value, bitfield, size); - return value; -} diff --git a/lib/utils.h b/lib/utils.h deleted file mode 100644 index fddb8a67..00000000 --- a/lib/utils.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - utils.h -- header file for utils.c - Copyright (C) 1999-2005 Ivo Timmermans - 2000-2009 Guus Sliepen - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ - -#ifndef __TINC_UTILS_H__ -#define __TINC_UTILS_H__ - -extern void hex2bin(char *src, char *dst, int length); -extern void bin2hex(char *src, char *dst, int length); - -#ifdef HAVE_MINGW -extern const char *winerror(int); -#define strerror(x) ((x)>0?strerror(x):winerror(GetLastError())) -#define sockerrno WSAGetLastError() -#define sockstrerror(x) winerror(x) -#define sockwouldblock(x) ((x) == WSAEWOULDBLOCK || (x) == WSAEINTR) -#define sockmsgsize(x) ((x) == WSAEMSGSIZE) -#define sockinprogress(x) ((x) == WSAEINPROGRESS || (x) == WSAEWOULDBLOCK) -#define sockinuse(x) ((x) == WSAEADDRINUSE) -#else -#define sockerrno errno -#define sockstrerror(x) strerror(x) -#define sockwouldblock(x) ((x) == EWOULDBLOCK || (x) == EINTR) -#define sockmsgsize(x) ((x) == EMSGSIZE) -#define sockinprogress(x) ((x) == EINPROGRESS) -#define sockinuse(x) ((x) == EADDRINUSE) -#endif - -extern unsigned int bitfield_to_int(void *bitfield, size_t size); - -#endif /* __TINC_UTILS_H__ */ diff --git a/lib/xalloc.h b/lib/xalloc.h deleted file mode 100644 index 51f99bdf..00000000 --- a/lib/xalloc.h +++ /dev/null @@ -1,29 +0,0 @@ -#include - -#ifndef PARAMS -# if defined PROTOTYPES || (defined __STDC__ && __STDC__) -# define PARAMS(Args) Args -# else -# define PARAMS(Args) () -# endif -#endif - -/* Exit value when the requested amount of memory is not available. - The caller may set it to some other value. */ -extern int xalloc_exit_failure; - -/* FIXME: describe */ -extern char *const xalloc_msg_memory_exhausted; - -/* FIXME: describe */ -extern void (*xalloc_fail_func) (); - -void *xmalloc PARAMS ((size_t n)) __attribute__ ((__malloc__)); -void *xmalloc_and_zero PARAMS ((size_t n)) __attribute__ ((__malloc__)); -void *xcalloc PARAMS ((size_t n, size_t s)); -void *xrealloc PARAMS ((void *p, size_t n)) __attribute__ ((__malloc__)); - -char *xstrdup PARAMS ((const char *s)) __attribute__ ((__malloc__)); - -extern int xasprintf(char **strp, const char *fmt, ...); -extern int xvasprintf(char **strp, const char *fmt, va_list ap); diff --git a/lib/xmalloc.c b/lib/xmalloc.c deleted file mode 100644 index 4e79aff9..00000000 --- a/lib/xmalloc.c +++ /dev/null @@ -1,160 +0,0 @@ -/* xmalloc.c -- malloc with out of memory checking - Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., Foundation, - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ - -#if HAVE_CONFIG_H -# include -#endif - -#include -#include -#include -#include -#include - -#if STDC_HEADERS -# include -#else -void *calloc (); -void *malloc (); -void *realloc (); -void free (); -#endif - -#include "dropin.h" -#include "xalloc.h" - -#ifndef EXIT_FAILURE -# define EXIT_FAILURE 1 -#endif - -/* Prototypes for functions defined here. */ -#if defined (__STDC__) && __STDC__ -void *xmalloc (size_t n); -void *xcalloc (size_t n, size_t s); -void *xrealloc (void *p, size_t n); -#endif - -/* Exit value when the requested amount of memory is not available. - The caller may set it to some other value. */ -int xalloc_exit_failure = EXIT_FAILURE; - -/* FIXME: describe */ -char *const xalloc_msg_memory_exhausted = "Memory exhausted"; - -/* FIXME: describe */ -void (*xalloc_fail_func) (int) = 0; - -static void -xalloc_fail (int size) -{ - if (xalloc_fail_func) - (*xalloc_fail_func) (size); - fprintf(stderr, "%s\n", xalloc_msg_memory_exhausted); - exit(xalloc_exit_failure); -} - -/* Allocate N bytes of memory dynamically, with error checking. */ - -void * -xmalloc (n) - size_t n; -{ - void *p; - - p = malloc (n); - if (p == 0) - xalloc_fail ((int)n); - return p; -} - -/* Allocate N bytes of memory dynamically, and set it all to zero. */ - -void * -xmalloc_and_zero (n) - size_t n; -{ - void *p; - - p = malloc (n); - if (p == 0) - xalloc_fail ((int)n); - memset (p, '\0', n); - return p; -} - -/* Change the size of an allocated block of memory P to N bytes, - with error checking. - If P is NULL, run xmalloc. */ - -void * -xrealloc (p, n) - void *p; - size_t n; -{ - p = realloc (p, n); - if (p == 0) - xalloc_fail (n); - return p; -} - -/* Duplicate a string */ - -char *xstrdup(const char *s) -{ - char *p; - - p = strdup(s); - if(!p) - xalloc_fail ((int)strlen(s)); - return p; -} - -#ifdef NOT_USED - -/* Allocate memory for N elements of S bytes, with error checking. */ - -void * -xcalloc (n, s) - size_t n, s; -{ - void *p; - - p = calloc (n, s); - if (p == 0) - xalloc_fail (); - return p; -} - -#endif /* NOT_USED */ - -int xasprintf(char **strp, const char *fmt, ...) { - int result; - va_list ap; - va_start(ap, fmt); - result = xvasprintf(strp, fmt, ap); - va_end(ap); - return result; -} - -int xvasprintf(char **strp, const char *fmt, va_list ap) { - int result = vasprintf(strp, fmt, ap); - if(result < 0) { - fprintf(stderr, "vasprintf() failed: %s\n", strerror(errno)); - exit(xalloc_exit_failure); - } - return result; -} diff --git a/src/Makefile.am b/src/Makefile.am index 7be9f5c5..20e438f1 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -4,11 +4,15 @@ sbin_PROGRAMS = tincd tincctl EXTRA_DIST = linux bsd solaris cygwin mingw raw_socket uml_socket openssl gcrypt -tincd_SOURCES = cipher.c conf.c connection.c control.c crypto.c digest.c edge.c graph.c logger.c meta.c net.c net_packet.c net_setup.c \ - net_socket.c netutl.c node.c process.c protocol.c protocol_auth.c protocol_edge.c protocol_misc.c \ +tincd_SOURCES = \ + xmalloc.c utils.c getopt.c getopt1.c list.c splay_tree.c dropin.c fake-getaddrinfo.c fake-getnameinfo.c \ + cipher.c conf.c connection.c control.c crypto.c digest.c edge.c graph.c logger.c meta.c net.c net_packet.c net_setup.c \ + net_socket.c netutl.c node.c process.c protocol.c protocol_auth.c protocol_edge.c protocol_misc.c \ protocol_key.c protocol_subnet.c route.c rsa.c subnet.c tincd.c -tincctl_SOURCES = tincctl.c rsagen.c +tincctl_SOURCES = \ + xmalloc.c utils.c getopt.c getopt1.c \ + tincctl.c rsagen.c if TUNEMU tincd_SOURCES += bsd/tunemu.c @@ -18,9 +22,11 @@ nodist_tincd_SOURCES = device.c DEFAULT_INCLUDES = -INCLUDES = @INCLUDES@ -I$(top_builddir) -I$(top_srcdir)/lib +INCLUDES = @INCLUDES@ -I$(top_builddir) -noinst_HEADERS = cipher.h conf.h connection.h control.h control_common.h crypto.h device.h digest.h edge.h graph.h logger.h meta.h net.h netutl.h node.h process.h \ +noinst_HEADERS = \ + xalloc.h utils.h getopt.h list.h splay_tree.h dropin.h fake-getaddrinfo.h fake-getnameinfo.h fake-gai-errnos.h ipv6.h ipv4.h ethernet.h \ + cipher.h conf.h connection.h control.h control_common.h crypto.h device.h digest.h edge.h graph.h logger.h meta.h net.h netutl.h node.h process.h \ protocol.h route.h rsa.h rsagen.h subnet.h bsd/tunemu.h LIBS = @LIBS@ @LIBGCRYPT_LIBS@ @@ -29,12 +35,6 @@ if TUNEMU LIBS += -lpcap endif -tincd_LDADD = \ - $(top_builddir)/lib/libvpn.a - -tincctl_LDADD = \ - $(top_builddir)/lib/libvpn.a - AM_CFLAGS = @CFLAGS@ -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -DSBINDIR=\"$(sbindir)\" dist-hook: diff --git a/src/alloca.c b/src/alloca.c new file mode 100644 index 00000000..10e5d65f --- /dev/null +++ b/src/alloca.c @@ -0,0 +1,494 @@ +/* alloca.c -- allocate automatically reclaimed memory + (Mostly) portable public-domain implementation -- D A Gwyn + + This implementation of the PWB library alloca function, + which is used to allocate space off the run-time stack so + that it is automatically reclaimed upon procedure exit, + was inspired by discussions with J. Q. Johnson of Cornell. + J.Otto Tennant contributed the Cray support. + + There are some preprocessor constants that can + be defined when compiling for your specific system, for + improved efficiency; however, the defaults should be okay. + + The general concept of this implementation is to keep + track of all alloca-allocated blocks, and reclaim any + that are found to be deeper in the stack than the current + invocation. This heuristic does not reclaim storage as + soon as it becomes invalid, but it will do so eventually. + + As a special case, alloca(0) reclaims storage without + allocating any. It is a good idea to use alloca(0) in + your main control loop, etc. to force garbage collection. */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#ifdef emacs +# include "blockinput.h" +#endif + +/* If compiling with GCC 2, this file's not needed. */ +#if !defined (__GNUC__) || __GNUC__ < 2 + +/* If someone has defined alloca as a macro, + there must be some other way alloca is supposed to work. */ +# ifndef alloca + +# ifdef emacs +# ifdef static +/* actually, only want this if static is defined as "" + -- this is for usg, in which emacs must undefine static + in order to make unexec workable + */ +# ifndef STACK_DIRECTION +you +lose +-- must know STACK_DIRECTION at compile-time +# endif /* STACK_DIRECTION undefined */ +# endif /* static */ +# endif /* emacs */ + +/* If your stack is a linked list of frames, you have to + provide an "address metric" ADDRESS_FUNCTION macro. */ + +# if defined (CRAY) && defined (CRAY_STACKSEG_END) +long i00afunc (); +# define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg)) +# else +# define ADDRESS_FUNCTION(arg) &(arg) +# endif + +# if __STDC__ +typedef void *pointer; +# else +typedef char *pointer; +# endif + +# ifndef NULL +# define NULL 0 +# endif + +/* Different portions of Emacs need to call different versions of + malloc. The Emacs executable needs alloca to call xmalloc, because + ordinary malloc isn't protected from input signals. On the other + hand, the utilities in lib-src need alloca to call malloc; some of + them are very simple, and don't have an xmalloc routine. + + Non-Emacs programs expect this to call xmalloc. + + Callers below should use malloc. */ + +# ifndef emacs +# define malloc xmalloc +# endif +extern pointer malloc (); + +/* Define STACK_DIRECTION if you know the direction of stack + growth for your system; otherwise it will be automatically + deduced at run-time. + + STACK_DIRECTION > 0 => grows toward higher addresses + STACK_DIRECTION < 0 => grows toward lower addresses + STACK_DIRECTION = 0 => direction of growth unknown */ + +# ifndef STACK_DIRECTION +# define STACK_DIRECTION 0 /* Direction unknown. */ +# endif + +# if STACK_DIRECTION != 0 + +# define STACK_DIR STACK_DIRECTION /* Known at compile-time. */ + +# else /* STACK_DIRECTION == 0; need run-time code. */ + +static int stack_dir; /* 1 or -1 once known. */ +# define STACK_DIR stack_dir + +static void +find_stack_direction () +{ + static char *addr = NULL; /* Address of first `dummy', once known. */ + auto char dummy; /* To get stack address. */ + + if (addr == NULL) + { /* Initial entry. */ + addr = ADDRESS_FUNCTION (dummy); + + find_stack_direction (); /* Recurse once. */ + } + else + { + /* Second entry. */ + if (ADDRESS_FUNCTION (dummy) > addr) + stack_dir = 1; /* Stack grew upward. */ + else + stack_dir = -1; /* Stack grew downward. */ + } +} + +# endif /* STACK_DIRECTION == 0 */ + +/* An "alloca header" is used to: + (a) chain together all alloca'ed blocks; + (b) keep track of stack depth. + + It is very important that sizeof(header) agree with malloc + alignment chunk size. The following default should work okay. */ + +# ifndef ALIGN_SIZE +# define ALIGN_SIZE sizeof(double) +# endif + +typedef union hdr +{ + char align[ALIGN_SIZE]; /* To force sizeof(header). */ + struct + { + union hdr *next; /* For chaining headers. */ + char *deep; /* For stack depth measure. */ + } h; +} header; + +static header *last_alloca_header = NULL; /* -> last alloca header. */ + +/* Return a pointer to at least SIZE bytes of storage, + which will be automatically reclaimed upon exit from + the procedure that called alloca. Originally, this space + was supposed to be taken from the current stack frame of the + caller, but that method cannot be made to work for some + implementations of C, for example under Gould's UTX/32. */ + +pointer +alloca (size) + unsigned size; +{ + auto char probe; /* Probes stack depth: */ + register char *depth = ADDRESS_FUNCTION (probe); + +# if STACK_DIRECTION == 0 + if (STACK_DIR == 0) /* Unknown growth direction. */ + find_stack_direction (); +# endif + + /* Reclaim garbage, defined as all alloca'd storage that + was allocated from deeper in the stack than currently. */ + + { + register header *hp; /* Traverses linked list. */ + +# ifdef emacs + BLOCK_INPUT; +# endif + + for (hp = last_alloca_header; hp != NULL;) + if ((STACK_DIR > 0 && hp->h.deep > depth) + || (STACK_DIR < 0 && hp->h.deep < depth)) + { + register header *np = hp->h.next; + + free ((pointer) hp); /* Collect garbage. */ + + hp = np; /* -> next header. */ + } + else + break; /* Rest are not deeper. */ + + last_alloca_header = hp; /* -> last valid storage. */ + +# ifdef emacs + UNBLOCK_INPUT; +# endif + } + + if (size == 0) + return NULL; /* No allocation required. */ + + /* Allocate combined header + user data storage. */ + + { + register pointer new = malloc (sizeof (header) + size); + /* Address of header. */ + + ((header *) new)->h.next = last_alloca_header; + ((header *) new)->h.deep = depth; + + last_alloca_header = (header *) new; + + /* User storage begins just after header. */ + + return (pointer) ((char *) new + sizeof (header)); + } +} + +# if defined (CRAY) && defined (CRAY_STACKSEG_END) + +# ifdef DEBUG_I00AFUNC +# include +# endif + +# ifndef CRAY_STACK +# define CRAY_STACK +# ifndef CRAY2 +/* Stack structures for CRAY-1, CRAY X-MP, and CRAY Y-MP */ +struct stack_control_header + { + long shgrow:32; /* Number of times stack has grown. */ + long shaseg:32; /* Size of increments to stack. */ + long shhwm:32; /* High water mark of stack. */ + long shsize:32; /* Current size of stack (all segments). */ + }; + +/* The stack segment linkage control information occurs at + the high-address end of a stack segment. (The stack + grows from low addresses to high addresses.) The initial + part of the stack segment linkage control information is + 0200 (octal) words. This provides for register storage + for the routine which overflows the stack. */ + +struct stack_segment_linkage + { + long ss[0200]; /* 0200 overflow words. */ + long sssize:32; /* Number of words in this segment. */ + long ssbase:32; /* Offset to stack base. */ + long:32; + long sspseg:32; /* Offset to linkage control of previous + segment of stack. */ + long:32; + long sstcpt:32; /* Pointer to task common address block. */ + long sscsnm; /* Private control structure number for + microtasking. */ + long ssusr1; /* Reserved for user. */ + long ssusr2; /* Reserved for user. */ + long sstpid; /* Process ID for pid based multi-tasking. */ + long ssgvup; /* Pointer to multitasking thread giveup. */ + long sscray[7]; /* Reserved for Cray Research. */ + long ssa0; + long ssa1; + long ssa2; + long ssa3; + long ssa4; + long ssa5; + long ssa6; + long ssa7; + long sss0; + long sss1; + long sss2; + long sss3; + long sss4; + long sss5; + long sss6; + long sss7; + }; + +# else /* CRAY2 */ +/* The following structure defines the vector of words + returned by the STKSTAT library routine. */ +struct stk_stat + { + long now; /* Current total stack size. */ + long maxc; /* Amount of contiguous space which would + be required to satisfy the maximum + stack demand to date. */ + long high_water; /* Stack high-water mark. */ + long overflows; /* Number of stack overflow ($STKOFEN) calls. */ + long hits; /* Number of internal buffer hits. */ + long extends; /* Number of block extensions. */ + long stko_mallocs; /* Block allocations by $STKOFEN. */ + long underflows; /* Number of stack underflow calls ($STKRETN). */ + long stko_free; /* Number of deallocations by $STKRETN. */ + long stkm_free; /* Number of deallocations by $STKMRET. */ + long segments; /* Current number of stack segments. */ + long maxs; /* Maximum number of stack segments so far. */ + long pad_size; /* Stack pad size. */ + long current_address; /* Current stack segment address. */ + long current_size; /* Current stack segment size. This + number is actually corrupted by STKSTAT to + include the fifteen word trailer area. */ + long initial_address; /* Address of initial segment. */ + long initial_size; /* Size of initial segment. */ + }; + +/* The following structure describes the data structure which trails + any stack segment. I think that the description in 'asdef' is + out of date. I only describe the parts that I am sure about. */ + +struct stk_trailer + { + long this_address; /* Address of this block. */ + long this_size; /* Size of this block (does not include + this trailer). */ + long unknown2; + long unknown3; + long link; /* Address of trailer block of previous + segment. */ + long unknown5; + long unknown6; + long unknown7; + long unknown8; + long unknown9; + long unknown10; + long unknown11; + long unknown12; + long unknown13; + long unknown14; + }; + +# endif /* CRAY2 */ +# endif /* not CRAY_STACK */ + +# ifdef CRAY2 +/* Determine a "stack measure" for an arbitrary ADDRESS. + I doubt that "lint" will like this much. */ + +static long +i00afunc (long *address) +{ + struct stk_stat status; + struct stk_trailer *trailer; + long *block, size; + long result = 0; + + /* We want to iterate through all of the segments. The first + step is to get the stack status structure. We could do this + more quickly and more directly, perhaps, by referencing the + $LM00 common block, but I know that this works. */ + + STKSTAT (&status); + + /* Set up the iteration. */ + + trailer = (struct stk_trailer *) (status.current_address + + status.current_size + - 15); + + /* There must be at least one stack segment. Therefore it is + a fatal error if "trailer" is null. */ + + if (trailer == 0) + abort (); + + /* Discard segments that do not contain our argument address. */ + + while (trailer != 0) + { + block = (long *) trailer->this_address; + size = trailer->this_size; + if (block == 0 || size == 0) + abort (); + trailer = (struct stk_trailer *) trailer->link; + if ((block <= address) && (address < (block + size))) + break; + } + + /* Set the result to the offset in this segment and add the sizes + of all predecessor segments. */ + + result = address - block; + + if (trailer == 0) + { + return result; + } + + do + { + if (trailer->this_size <= 0) + abort (); + result += trailer->this_size; + trailer = (struct stk_trailer *) trailer->link; + } + while (trailer != 0); + + /* We are done. Note that if you present a bogus address (one + not in any segment), you will get a different number back, formed + from subtracting the address of the first block. This is probably + not what you want. */ + + return (result); +} + +# else /* not CRAY2 */ +/* Stack address function for a CRAY-1, CRAY X-MP, or CRAY Y-MP. + Determine the number of the cell within the stack, + given the address of the cell. The purpose of this + routine is to linearize, in some sense, stack addresses + for alloca. */ + +static long +i00afunc (long address) +{ + long stkl = 0; + + long size, pseg, this_segment, stack; + long result = 0; + + struct stack_segment_linkage *ssptr; + + /* Register B67 contains the address of the end of the + current stack segment. If you (as a subprogram) store + your registers on the stack and find that you are past + the contents of B67, you have overflowed the segment. + + B67 also points to the stack segment linkage control + area, which is what we are really interested in. */ + + stkl = CRAY_STACKSEG_END (); + ssptr = (struct stack_segment_linkage *) stkl; + + /* If one subtracts 'size' from the end of the segment, + one has the address of the first word of the segment. + + If this is not the first segment, 'pseg' will be + nonzero. */ + + pseg = ssptr->sspseg; + size = ssptr->sssize; + + this_segment = stkl - size; + + /* It is possible that calling this routine itself caused + a stack overflow. Discard stack segments which do not + contain the target address. */ + + while (!(this_segment <= address && address <= stkl)) + { +# ifdef DEBUG_I00AFUNC + fprintf (stderr, "%011o %011o %011o\n", this_segment, address, stkl); +# endif + if (pseg == 0) + break; + stkl = stkl - pseg; + ssptr = (struct stack_segment_linkage *) stkl; + size = ssptr->sssize; + pseg = ssptr->sspseg; + this_segment = stkl - size; + } + + result = address - this_segment; + + /* If you subtract pseg from the current end of the stack, + you get the address of the previous stack segment's end. + This seems a little convoluted to me, but I'll bet you save + a cycle somewhere. */ + + while (pseg != 0) + { +# ifdef DEBUG_I00AFUNC + fprintf (stderr, "%011o %011o\n", pseg, size); +# endif + stkl = stkl - pseg; + ssptr = (struct stack_segment_linkage *) stkl; + size = ssptr->sssize; + pseg = ssptr->sspseg; + result += size; + } + return (result); +} + +# endif /* not CRAY2 */ +# endif /* CRAY */ + +# endif /* no alloca */ +#endif /* not GCC version 2 */ diff --git a/src/dropin.c b/src/dropin.c new file mode 100644 index 00000000..89039da3 --- /dev/null +++ b/src/dropin.c @@ -0,0 +1,165 @@ +/* + dropin.c -- a set of drop-in replacements for libc functions + Copyright (C) 2000-2005 Ivo Timmermans, + 2000-2009 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "system.h" + +#include "xalloc.h" + +#ifndef HAVE_DAEMON +/* + Replacement for the daemon() function. + + The daemon() function is for programs wishing to detach themselves + from the controlling terminal and run in the background as system + daemons. + + Unless the argument nochdir is non-zero, daemon() changes the + current working directory to the root (``/''). + + Unless the argument noclose is non-zero, daemon() will redirect + standard input, standard output and standard error to /dev/null. +*/ +int daemon(int nochdir, int noclose) { +#ifdef HAVE_FORK + pid_t pid; + int fd; + + pid = fork(); + + /* Check if forking failed */ + if(pid < 0) { + perror("fork"); + exit(-1); + } + + /* If we are the parent, terminate */ + if(pid) + exit(0); + + /* Detach by becoming the new process group leader */ + if(setsid() < 0) { + perror("setsid"); + return -1; + } + + /* Change working directory to the root (to avoid keeping mount + points busy) */ + if(!nochdir) { + chdir("/"); + } + + /* Redirect stdin/out/err to /dev/null */ + if(!noclose) { + fd = open("/dev/null", O_RDWR); + + if(fd < 0) { + perror("opening /dev/null"); + return -1; + } else { + dup2(fd, 0); + dup2(fd, 1); + dup2(fd, 2); + } + } + + return 0; +#else + return -1; +#endif +} +#endif + +#ifndef HAVE_GET_CURRENT_DIR_NAME +/* + Replacement for the GNU get_current_dir_name function: + + get_current_dir_name will malloc(3) an array big enough to hold the + current directory name. If the environment variable PWD is set, and + its value is correct, then that value will be returned. +*/ +char *get_current_dir_name(void) { + size_t size; + char *buf; + char *r; + + /* Start with 100 bytes. If this turns out to be insufficient to + contain the working directory, double the size. */ + size = 100; + buf = xmalloc(size); + + errno = 0; /* Success */ + r = getcwd(buf, size); + + /* getcwd returns NULL and sets errno to ERANGE if the bufferspace + is insufficient to contain the entire working directory. */ + while(r == NULL && errno == ERANGE) { + free(buf); + size <<= 1; /* double the size */ + buf = xmalloc(size); + r = getcwd(buf, size); + } + + return buf; +} +#endif + +#ifndef HAVE_ASPRINTF +int asprintf(char **buf, const char *fmt, ...) { + int result; + va_list ap; + va_start(ap, fmt); + result = vasprintf(buf, fmt, ap); + va_end(ap); + return result; +} + +int vasprintf(char **buf, const char *fmt, va_list ap) { + int status; + va_list aq; + int len; + + len = 4096; + *buf = xmalloc(len); + + va_copy(aq, ap); + status = vsnprintf(*buf, len, fmt, aq); + va_end(aq); + + if(status >= 0) + *buf = xrealloc(*buf, status + 1); + + if(status > len - 1) { + len = status; + va_copy(aq, ap); + status = vsnprintf(*buf, len, fmt, aq); + va_end(aq); + } + + return status; +} +#endif + +#ifndef HAVE_GETTIMEOFDAY +int gettimeofday(struct timeval *tv, void *tz) { + tv->tv_sec = time(NULL); + tv->tv_usec = 0; + return 0; +} +#endif diff --git a/src/dropin.h b/src/dropin.h new file mode 100644 index 00000000..e9d13535 --- /dev/null +++ b/src/dropin.h @@ -0,0 +1,44 @@ +/* + dropin.h -- header file for dropin.c + Copyright (C) 2000-2005 Ivo Timmermans, + 2000-2009 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __DROPIN_H__ +#define __DROPIN_H__ + +#include "fake-getaddrinfo.h" +#include "fake-getnameinfo.h" + +#ifndef HAVE_DAEMON +extern int daemon(int, int); +#endif + +#ifndef HAVE_GET_CURRENT_DIR_NAME +extern char *get_current_dir_name(void); +#endif + +#ifndef HAVE_ASPRINTF +extern int asprintf(char **, const char *, ...); +extern int vasprintf(char **, const char *, va_list ap); +#endif + +#ifndef HAVE_GETTIMEOFDAY +extern int gettimeofday(struct timeval *, void *); +#endif + +#endif /* __DROPIN_H__ */ diff --git a/src/ethernet.h b/src/ethernet.h new file mode 100644 index 00000000..eef5f424 --- /dev/null +++ b/src/ethernet.h @@ -0,0 +1,85 @@ +/* + ethernet.h -- missing Ethernet related definitions + Copyright (C) 2005 Ivo Timmermans + 2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_ETHERNET_H__ +#define __TINC_ETHERNET_H__ + +#ifndef ETH_ALEN +#define ETH_ALEN 6 +#endif + +#ifndef ARPHRD_ETHER +#define ARPHRD_ETHER 1 +#endif + +#ifndef ETH_P_IP +#define ETH_P_IP 0x0800 +#endif + +#ifndef ETH_P_ARP +#define ETH_P_ARP 0x0806 +#endif + +#ifndef ETH_P_IPV6 +#define ETH_P_IPV6 0x86DD +#endif + +#ifndef HAVE_STRUCT_ETHER_HEADER +struct ether_header { + uint8_t ether_dhost[ETH_ALEN]; + uint8_t ether_shost[ETH_ALEN]; + uint16_t ether_type; +} __attribute__ ((__packed__)); +#endif + +#ifndef HAVE_STRUCT_ARPHDR +struct arphdr { + uint16_t ar_hrd; + uint16_t ar_pro; + uint8_t ar_hln; + uint8_t ar_pln; + uint16_t ar_op; +} __attribute__ ((__packed__)); + +#define ARPOP_REQUEST 1 +#define ARPOP_REPLY 2 +#define ARPOP_RREQUEST 3 +#define ARPOP_RREPLY 4 +#define ARPOP_InREQUEST 8 +#define ARPOP_InREPLY 9 +#define ARPOP_NAK 10 +#endif + +#ifndef HAVE_STRUCT_ETHER_ARP +struct ether_arp { + struct arphdr ea_hdr; + uint8_t arp_sha[ETH_ALEN]; + uint8_t arp_spa[4]; + uint8_t arp_tha[ETH_ALEN]; + uint8_t arp_tpa[4]; +} __attribute__ ((__packed__)); +#define arp_hrd ea_hdr.ar_hrd +#define arp_pro ea_hdr.ar_pro +#define arp_hln ea_hdr.ar_hln +#define arp_pln ea_hdr.ar_pln +#define arp_op ea_hdr.ar_op +#endif + +#endif /* __TINC_ETHERNET_H__ */ diff --git a/src/fake-gai-errnos.h b/src/fake-gai-errnos.h new file mode 100644 index 00000000..4ffabb69 --- /dev/null +++ b/src/fake-gai-errnos.h @@ -0,0 +1,19 @@ +/* + * fake library for ssh + * + * This file is included in getaddrinfo.c and getnameinfo.c. + * See getaddrinfo.c and getnameinfo.c. + */ + +/* for old netdb.h */ +#ifndef EAI_NODATA +#define EAI_NODATA 1 +#endif + +#ifndef EAI_MEMORY +#define EAI_MEMORY 2 +#endif + +#ifndef EAI_FAMILY +#define EAI_FAMILY 3 +#endif diff --git a/src/fake-getaddrinfo.c b/src/fake-getaddrinfo.c new file mode 100644 index 00000000..df3d3476 --- /dev/null +++ b/src/fake-getaddrinfo.c @@ -0,0 +1,102 @@ +/* + * fake library for ssh + * + * This file includes getaddrinfo(), freeaddrinfo() and gai_strerror(). + * These funtions are defined in rfc2133. + * + * But these functions are not implemented correctly. The minimum subset + * is implemented for ssh use only. For exapmle, this routine assumes + * that ai_family is AF_INET. Don't use it for another purpose. + */ + +#include "system.h" + +#include "ipv4.h" +#include "ipv6.h" +#include "fake-getaddrinfo.h" +#include "xalloc.h" + + +#if !HAVE_DECL_GAI_STRERROR +char *gai_strerror(int ecode) { + switch (ecode) { + case EAI_NODATA: + return "No address associated with hostname"; + case EAI_MEMORY: + return "Memory allocation failure"; + case EAI_FAMILY: + return "Address family not supported"; + default: + return "Unknown error"; + } +} +#endif /* !HAVE_GAI_STRERROR */ + +#if !HAVE_DECL_FREEADDRINFO +void freeaddrinfo(struct addrinfo *ai) { + struct addrinfo *next; + + while(ai) { + next = ai->ai_next; + free(ai); + ai = next; + } +} +#endif /* !HAVE_FREEADDRINFO */ + +#if !HAVE_DECL_GETADDRINFO +static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr) { + struct addrinfo *ai; + + ai = xmalloc_and_zero(sizeof(struct addrinfo) + sizeof(struct sockaddr_in)); + + ai->ai_addr = (struct sockaddr *)(ai + 1); + ai->ai_addrlen = sizeof(struct sockaddr_in); + ai->ai_addr->sa_family = ai->ai_family = AF_INET; + + ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port; + ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr; + + return ai; +} + +int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) { + struct addrinfo *prev = NULL; + struct hostent *hp; + struct in_addr in = {0}; + int i; + uint16_t port = 0; + + if(hints && hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC) + return EAI_FAMILY; + + if (servname) + port = htons(atoi(servname)); + + if (hints && hints->ai_flags & AI_PASSIVE) { + *res = malloc_ai(port, htonl(0x00000000)); + return 0; + } + + if (!hostname) { + *res = malloc_ai(port, htonl(0x7f000001)); + return 0; + } + + hp = gethostbyname(hostname); + + if(!hp || !hp->h_addr_list || !hp->h_addr_list[0]) + return EAI_NODATA; + + for (i = 0; hp->h_addr_list[i]; i++) { + *res = malloc_ai(port, ((struct in_addr *)hp->h_addr_list[i])->s_addr); + + if(prev) + prev->ai_next = *res; + + prev = *res; + } + + return 0; +} +#endif /* !HAVE_GETADDRINFO */ diff --git a/src/fake-getaddrinfo.h b/src/fake-getaddrinfo.h new file mode 100644 index 00000000..5af74918 --- /dev/null +++ b/src/fake-getaddrinfo.h @@ -0,0 +1,47 @@ +#ifndef _FAKE_GETADDRINFO_H +#define _FAKE_GETADDRINFO_H + +#include "fake-gai-errnos.h" + +#ifndef AI_PASSIVE +# define AI_PASSIVE 1 +# define AI_CANONNAME 2 +#endif + +#ifndef NI_NUMERICHOST +# define NI_NUMERICHOST 2 +# define NI_NAMEREQD 4 +# define NI_NUMERICSERV 8 +#endif + +#ifndef AI_NUMERICHOST +#define AI_NUMERICHOST 4 +#endif + +#ifndef HAVE_STRUCT_ADDRINFO +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for hostname */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ +}; +#endif /* !HAVE_STRUCT_ADDRINFO */ + +#if !HAVE_DECL_GETADDRINFO +int getaddrinfo(const char *hostname, const char *servname, + const struct addrinfo *hints, struct addrinfo **res); +#endif /* !HAVE_GETADDRINFO */ + +#if !HAVE_DECL_GAI_STRERROR +char *gai_strerror(int ecode); +#endif /* !HAVE_GAI_STRERROR */ + +#if !HAVE_DECL_FREEADDRINFO +void freeaddrinfo(struct addrinfo *ai); +#endif /* !HAVE_FREEADDRINFO */ + +#endif /* _FAKE_GETADDRINFO_H */ diff --git a/src/fake-getnameinfo.c b/src/fake-getnameinfo.c new file mode 100644 index 00000000..1eba4925 --- /dev/null +++ b/src/fake-getnameinfo.c @@ -0,0 +1,54 @@ +/* + * fake library for ssh + * + * This file includes getnameinfo(). + * These funtions are defined in rfc2133. + * + * But these functions are not implemented correctly. The minimum subset + * is implemented for ssh use only. For exapmle, this routine assumes + * that ai_family is AF_INET. Don't use it for another purpose. + */ + +#include "system.h" + +#include "fake-getnameinfo.h" +#include "fake-getaddrinfo.h" + +#if !HAVE_DECL_GETNAMEINFO + +int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags) { + struct sockaddr_in *sin = (struct sockaddr_in *)sa; + struct hostent *hp; + int len; + + if(sa->sa_family != AF_INET) + return EAI_FAMILY; + + if(serv && servlen) { + len = snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); + if(len < 0 || len >= servlen) + return EAI_MEMORY; + } + + if(!host || !hostlen) + return 0; + + if(flags & NI_NUMERICHOST) { + len = snprintf(host, hostlen, "%s", inet_ntoa(sin->sin_addr)); + if(len < 0 || len >= hostlen) + return EAI_MEMORY; + return 0; + } + + hp = gethostbyaddr((char *)&sin->sin_addr, sizeof(struct in_addr), AF_INET); + + if(!hp || !hp->h_name || !hp->h_name[0]) + return EAI_NODATA; + + len = snprintf(host, hostlen, "%s", hp->h_name); + if(len < 0 || len >= hostlen) + return EAI_MEMORY; + + return 0; +} +#endif /* !HAVE_GETNAMEINFO */ diff --git a/src/fake-getnameinfo.h b/src/fake-getnameinfo.h new file mode 100644 index 00000000..4389a8fe --- /dev/null +++ b/src/fake-getnameinfo.h @@ -0,0 +1,16 @@ +#ifndef _FAKE_GETNAMEINFO_H +#define _FAKE_GETNAMEINFO_H + +#if !HAVE_DECL_GETNAMEINFO +int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, + size_t hostlen, char *serv, size_t servlen, int flags); +#endif /* !HAVE_GETNAMEINFO */ + +#ifndef NI_MAXSERV +# define NI_MAXSERV 32 +#endif /* !NI_MAXSERV */ +#ifndef NI_MAXHOST +# define NI_MAXHOST 1025 +#endif /* !NI_MAXHOST */ + +#endif /* _FAKE_GETNAMEINFO_H */ diff --git a/src/getopt.c b/src/getopt.c new file mode 100644 index 00000000..b2f88b42 --- /dev/null +++ b/src/getopt.c @@ -0,0 +1,1042 @@ +/* Getopt for GNU. + NOTE: getopt is now part of the C library, so if you don't know what + "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu + before changing it! + + Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 + Free Software Foundation, Inc. + +NOTE: The canonical source of this file is maintained with the GNU C Library. +Bugs can be reported to bug-glibc@prep.ai.mit.edu. + +This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +/* This tells Alpha OSF/1 not to define a getopt prototype in . + Ditto for AIX 3.2 and . */ +#ifndef _NO_PROTO +#define _NO_PROTO +#endif + +#ifdef HAVE_CONFIG_H +#include +#endif + +#if !defined (__STDC__) || !__STDC__ +/* This is a separate conditional since some stdc systems + reject `defined (const)'. */ +#ifndef const +#define const +#endif +#endif + +#include + +/* Comment out all this code if we are using the GNU C Library, and are not + actually compiling the library itself. This code is part of the GNU C + Library, but also included in many other GNU distributions. Compiling + and linking in this code is a waste when using the GNU C library + (especially if it is a shared library). Rather than having every GNU + program understand `configure --with-gnu-libc' and omit the object files, + it is simpler to just do this in the source for each such file. */ + +#define GETOPT_INTERFACE_VERSION 2 +#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 +#include +#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION +#define ELIDE_CODE +#endif +#endif + +#ifndef ELIDE_CODE + + +/* This needs to come after some library #include + to get __GNU_LIBRARY__ defined. */ +#ifdef __GNU_LIBRARY__ +/* Don't include stdlib.h for non-GNU C libraries because some of them + contain conflicting prototypes for getopt. */ +#include +#include +#endif /* GNU C library. */ + +#ifdef VMS +#include +#if HAVE_STRING_H - 0 +#include +#endif +#endif + +#if defined (WIN32) && !defined (__CYGWIN32__) +/* It's not Unix, really. See? Capital letters. */ +#include +#define getpid() GetCurrentProcessId() +#endif + +/* This version of `getopt' appears to the caller like standard Unix `getopt' + but it behaves differently for the user, since it allows the user + to intersperse the options with the other arguments. + + As `getopt' works, it permutes the elements of ARGV so that, + when it is done, all the options precede everything else. Thus + all application programs are extended to handle flexible argument order. + + Setting the environment variable POSIXLY_CORRECT disables permutation. + Then the behavior is completely standard. + + GNU application programs can use a third alternative mode in which + they can distinguish the relative order of options and other arguments. */ + +#include "getopt.h" + +/* For communication from `getopt' to the caller. + When `getopt' finds an option that takes an argument, + the argument value is returned here. + Also, when `ordering' is RETURN_IN_ORDER, + each non-option ARGV-element is returned here. */ + +char *optarg = NULL; + +/* Index in ARGV of the next element to be scanned. + This is used for communication to and from the caller + and for communication between successive calls to `getopt'. + + On entry to `getopt', zero means this is the first call; initialize. + + When `getopt' returns -1, this is the index of the first of the + non-option elements that the caller should itself scan. + + Otherwise, `optind' communicates from one call to the next + how much of ARGV has been scanned so far. */ + +/* 1003.2 says this must be 1 before any call. */ +int optind = 1; + +/* Formerly, initialization of getopt depended on optind==0, which + causes problems with re-calling getopt as programs generally don't + know that. */ + +int __getopt_initialized = 0; + +/* The next char to be scanned in the option-element + in which the last option character we returned was found. + This allows us to pick up the scan where we left off. + + If this is zero, or a null string, it means resume the scan + by advancing to the next ARGV-element. */ + +static char *nextchar; + +/* Callers store zero here to inhibit the error message + for unrecognized options. */ + +int opterr = 1; + +/* Set to an option character which was unrecognized. + This must be initialized on some systems to avoid linking in the + system's own getopt implementation. */ + +int optopt = '?'; + +/* Describe how to deal with options that follow non-option ARGV-elements. + + If the caller did not specify anything, + the default is REQUIRE_ORDER if the environment variable + POSIXLY_CORRECT is defined, PERMUTE otherwise. + + REQUIRE_ORDER means don't recognize them as options; + stop option processing when the first non-option is seen. + This is what Unix does. + This mode of operation is selected by either setting the environment + variable POSIXLY_CORRECT, or using `+' as the first character + of the list of option characters. + + PERMUTE is the default. We permute the contents of ARGV as we scan, + so that eventually all the non-options are at the end. This allows options + to be given in any order, even with programs that were not written to + expect this. + + RETURN_IN_ORDER is an option available to programs that were written + to expect options and other ARGV-elements in any order and that care about + the ordering of the two. We describe each non-option ARGV-element + as if it were the argument of an option with character code 1. + Using `-' as the first character of the list of option characters + selects this mode of operation. + + The special argument `--' forces an end of option-scanning regardless + of the value of `ordering'. In the case of RETURN_IN_ORDER, only + `--' can cause `getopt' to return -1 with `optind' != ARGC. */ + +static enum +{ + REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER +} ordering; + +/* Value of POSIXLY_CORRECT environment variable. */ +static char *posixly_correct; + +#ifdef __GNU_LIBRARY__ +/* We want to avoid inclusion of string.h with non-GNU libraries + because there are many ways it can cause trouble. + On some systems, it contains special magic macros that don't work + in GCC. */ +#include +#define my_index strchr +#else + +/* Avoid depending on library functions or files + whose names are inconsistent. */ + +char *getenv (); + +static char * +my_index (str, chr) + const char *str; + int chr; +{ + while (*str) + { + if (*str == chr) + return (char *) str; + str++; + } + return 0; +} + +/* If using GCC, we can safely declare strlen this way. + If not using GCC, it is ok not to declare it. */ +#ifdef __GNUC__ +/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. + That was relevant to code that was here before. */ +#if !defined (__STDC__) || !__STDC__ +/* gcc with -traditional declares the built-in strlen to return int, + and has done so at least since version 2.4.5. -- rms. */ +extern int strlen (const char *); +#endif /* not __STDC__ */ +#endif /* __GNUC__ */ + +#endif /* not __GNU_LIBRARY__ */ + +/* Handle permutation of arguments. */ + +/* Describe the part of ARGV that contains non-options that have + been skipped. `first_nonopt' is the index in ARGV of the first of them; + `last_nonopt' is the index after the last of them. */ + +static int first_nonopt; +static int last_nonopt; + +#ifdef _LIBC +/* Bash 2.0 gives us an environment variable containing flags + indicating ARGV elements that should not be considered arguments. */ + +/* Defined in getopt_init.c */ +extern char *__getopt_nonoption_flags; + +static int nonoption_flags_max_len; +static int nonoption_flags_len; + +static int original_argc; +static char *const *original_argv; + +extern pid_t __libc_pid; + +/* Make sure the environment variable bash 2.0 puts in the environment + is valid for the getopt call we must make sure that the ARGV passed + to getopt is that one passed to the process. */ +static void +__attribute__ ((__unused__)) +store_args_and_env (int argc, char *const *argv) +{ + /* XXX This is no good solution. We should rather copy the args so + that we can compare them later. But we must not use malloc(3). */ + original_argc = argc; + original_argv = argv; +} +text_set_element (__libc_subinit, store_args_and_env); + +# define SWAP_FLAGS(ch1, ch2) \ + if (nonoption_flags_len > 0) \ + { \ + char __tmp = __getopt_nonoption_flags[ch1]; \ + __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ + __getopt_nonoption_flags[ch2] = __tmp; \ + } +#else /* !_LIBC */ +# define SWAP_FLAGS(ch1, ch2) +#endif /* _LIBC */ + +/* Exchange two adjacent subsequences of ARGV. + One subsequence is elements [first_nonopt,last_nonopt) + which contains all the non-options that have been skipped so far. + The other is elements [last_nonopt,optind), which contains all + the options processed since those non-options were skipped. + + `first_nonopt' and `last_nonopt' are relocated so that they describe + the new indices of the non-options in ARGV after they are moved. */ + +#if defined (__STDC__) && __STDC__ +static void exchange (char **); +#endif + +static void +exchange (argv) + char **argv; +{ + int bottom = first_nonopt; + int middle = last_nonopt; + int top = optind; + char *tem; + + /* Exchange the shorter segment with the far end of the longer segment. + That puts the shorter segment into the right place. + It leaves the longer segment in the right place overall, + but it consists of two parts that need to be swapped next. */ + +#ifdef _LIBC + /* First make sure the handling of the `__getopt_nonoption_flags' + string can work normally. Our top argument must be in the range + of the string. */ + if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) + { + /* We must extend the array. The user plays games with us and + presents new arguments. */ + char *new_str = malloc (top + 1); + if (new_str == NULL) + nonoption_flags_len = nonoption_flags_max_len = 0; + else + { + memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len); + memset (&new_str[nonoption_flags_max_len], '\0', + top + 1 - nonoption_flags_max_len); + nonoption_flags_max_len = top + 1; + __getopt_nonoption_flags = new_str; + } + } +#endif + + while (top > middle && middle > bottom) + { + if (top - middle > middle - bottom) + { + /* Bottom segment is the short one. */ + int len = middle - bottom; + register int i; + + /* Swap it with the top part of the top segment. */ + for (i = 0; i < len; i++) + { + tem = argv[bottom + i]; + argv[bottom + i] = argv[top - (middle - bottom) + i]; + argv[top - (middle - bottom) + i] = tem; + SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); + } + /* Exclude the moved bottom segment from further swapping. */ + top -= len; + } + else + { + /* Top segment is the short one. */ + int len = top - middle; + register int i; + + /* Swap it with the bottom part of the bottom segment. */ + for (i = 0; i < len; i++) + { + tem = argv[bottom + i]; + argv[bottom + i] = argv[middle + i]; + argv[middle + i] = tem; + SWAP_FLAGS (bottom + i, middle + i); + } + /* Exclude the moved top segment from further swapping. */ + bottom += len; + } + } + + /* Update records for the slots the non-options now occupy. */ + + first_nonopt += (optind - last_nonopt); + last_nonopt = optind; +} + +/* Initialize the internal data when the first call is made. */ + +#if defined (__STDC__) && __STDC__ +static const char *_getopt_initialize (int, char *const *, const char *); +#endif +static const char * +_getopt_initialize (argc, argv, optstring) + int argc; + char *const *argv; + const char *optstring; +{ + /* Start processing options with ARGV-element 1 (since ARGV-element 0 + is the program name); the sequence of previously skipped + non-option ARGV-elements is empty. */ + + first_nonopt = last_nonopt = optind; + + nextchar = NULL; + + posixly_correct = getenv ("POSIXLY_CORRECT"); + + /* Determine how to handle the ordering of options and nonoptions. */ + + if (optstring[0] == '-') + { + ordering = RETURN_IN_ORDER; + ++optstring; + } + else if (optstring[0] == '+') + { + ordering = REQUIRE_ORDER; + ++optstring; + } + else if (posixly_correct != NULL) + ordering = REQUIRE_ORDER; + else + ordering = PERMUTE; + +#ifdef _LIBC + if (posixly_correct == NULL + && argc == original_argc && argv == original_argv) + { + if (nonoption_flags_max_len == 0) + { + if (__getopt_nonoption_flags == NULL + || __getopt_nonoption_flags[0] == '\0') + nonoption_flags_max_len = -1; + else + { + const char *orig_str = __getopt_nonoption_flags; + int len = nonoption_flags_max_len = strlen (orig_str); + if (nonoption_flags_max_len < argc) + nonoption_flags_max_len = argc; + __getopt_nonoption_flags = + (char *) malloc (nonoption_flags_max_len); + if (__getopt_nonoption_flags == NULL) + nonoption_flags_max_len = -1; + else + { + memcpy (__getopt_nonoption_flags, orig_str, len); + memset (&__getopt_nonoption_flags[len], '\0', + nonoption_flags_max_len - len); + } + } + } + nonoption_flags_len = nonoption_flags_max_len; + } + else + nonoption_flags_len = 0; +#endif + + return optstring; +} + +/* Scan elements of ARGV (whose length is ARGC) for option characters + given in OPTSTRING. + + If an element of ARGV starts with '-', and is not exactly "-" or "--", + then it is an option element. The characters of this element + (aside from the initial '-') are option characters. If `getopt' + is called repeatedly, it returns successively each of the option characters + from each of the option elements. + + If `getopt' finds another option character, it returns that character, + updating `optind' and `nextchar' so that the next call to `getopt' can + resume the scan with the following option character or ARGV-element. + + If there are no more option characters, `getopt' returns -1. + Then `optind' is the index in ARGV of the first ARGV-element + that is not an option. (The ARGV-elements have been permuted + so that those that are not options now come last.) + + OPTSTRING is a string containing the legitimate option characters. + If an option character is seen that is not listed in OPTSTRING, + return '?' after printing an error message. If you set `opterr' to + zero, the error message is suppressed but we still return '?'. + + If a char in OPTSTRING is followed by a colon, that means it wants an arg, + so the following text in the same ARGV-element, or the text of the following + ARGV-element, is returned in `optarg'. Two colons mean an option that + wants an optional arg; if there is text in the current ARGV-element, + it is returned in `optarg', otherwise `optarg' is set to zero. + + If OPTSTRING starts with `-' or `+', it requests different methods of + handling the non-option ARGV-elements. + See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. + + Long-named options begin with `--' instead of `-'. + Their names may be abbreviated as long as the abbreviation is unique + or is an exact match for some defined option. If they have an + argument, it follows the option name in the same ARGV-element, separated + from the option name by a `=', or else the in next ARGV-element. + When `getopt' finds a long-named option, it returns 0 if that option's + `flag' field is nonzero, the value of the option's `val' field + if the `flag' field is zero. + + The elements of ARGV aren't really const, because we permute them. + But we pretend they're const in the prototype to be compatible + with other systems. + + LONGOPTS is a vector of `struct option' terminated by an + element containing a name which is zero. + + LONGIND returns the index in LONGOPT of the long-named option found. + It is only valid when a long-named option has been found by the most + recent call. + + If LONG_ONLY is nonzero, '-' as well as '--' can introduce + long-named options. */ + +int +_getopt_internal (argc, argv, optstring, longopts, longind, long_only) + int argc; + char *const *argv; + const char *optstring; + const struct option *longopts; + int *longind; + int long_only; +{ + optarg = NULL; + + if (optind == 0 || !__getopt_initialized) + { + if (optind == 0) + optind = 1; /* Don't scan ARGV[0], the program name. */ + optstring = _getopt_initialize (argc, argv, optstring); + __getopt_initialized = 1; + } + + /* Test whether ARGV[optind] points to a non-option argument. + Either it does not have option syntax, or there is an environment flag + from the shell indicating it is not an option. The later information + is only used when the used in the GNU libc. */ +#ifdef _LIBC +#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ + || (optind < nonoption_flags_len \ + && __getopt_nonoption_flags[optind] == '1')) +#else +#define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') +#endif + + if (nextchar == NULL || *nextchar == '\0') + { + /* Advance to the next ARGV-element. */ + + /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been + moved back by the user (who may also have changed the arguments). */ + if (last_nonopt > optind) + last_nonopt = optind; + if (first_nonopt > optind) + first_nonopt = optind; + + if (ordering == PERMUTE) + { + /* If we have just processed some options following some non-options, + exchange them so that the options come first. */ + + if (first_nonopt != last_nonopt && last_nonopt != optind) + exchange ((char **) argv); + else if (last_nonopt != optind) + first_nonopt = optind; + + /* Skip any additional non-options + and extend the range of non-options previously skipped. */ + + while (optind < argc && NONOPTION_P) + optind++; + last_nonopt = optind; + } + + /* The special ARGV-element `--' means premature end of options. + Skip it like a null option, + then exchange with previous non-options as if it were an option, + then skip everything else like a non-option. */ + + if (optind != argc && !strcmp (argv[optind], "--")) + { + optind++; + + if (first_nonopt != last_nonopt && last_nonopt != optind) + exchange ((char **) argv); + else if (first_nonopt == last_nonopt) + first_nonopt = optind; + last_nonopt = argc; + + optind = argc; + } + + /* If we have done all the ARGV-elements, stop the scan + and back over any non-options that we skipped and permuted. */ + + if (optind == argc) + { + /* Set the next-arg-index to point at the non-options + that we previously skipped, so the caller will digest them. */ + if (first_nonopt != last_nonopt) + optind = first_nonopt; + return -1; + } + + /* If we have come to a non-option and did not permute it, + either stop the scan or describe it to the caller and pass it by. */ + + if (NONOPTION_P) + { + if (ordering == REQUIRE_ORDER) + return -1; + optarg = argv[optind++]; + return 1; + } + + /* We have found another option-ARGV-element. + Skip the initial punctuation. */ + + nextchar = (argv[optind] + 1 + + (longopts != NULL && argv[optind][1] == '-')); + } + + /* Decode the current option-ARGV-element. */ + + /* Check whether the ARGV-element is a long option. + + If long_only and the ARGV-element has the form "-f", where f is + a valid short option, don't consider it an abbreviated form of + a long option that starts with f. Otherwise there would be no + way to give the -f short option. + + On the other hand, if there's a long option "fubar" and + the ARGV-element is "-fu", do consider that an abbreviation of + the long option, just like "--fu", and not "-f" with arg "u". + + This distinction seems to be the most useful approach. */ + + if (longopts != NULL + && (argv[optind][1] == '-' + || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) + { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = -1; + int option_index; + + for (nameend = nextchar; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match + or abbreviated matches. */ + for (p = longopts, option_index = 0; p->name; p++, option_index++) + if (!strncmp (p->name, nextchar, nameend - nextchar)) + { + if ((unsigned int) (nameend - nextchar) + == (unsigned int) strlen (p->name)) + { + /* Exact match found. */ + pfound = p; + indfound = option_index; + exact = 1; + break; + } + else if (pfound == NULL) + { + /* First nonexact match found. */ + pfound = p; + indfound = option_index; + } + else + /* Second or later nonexact match found. */ + ambig = 1; + } + + if (ambig && !exact) + { + if (opterr) + fprintf (stderr, "%s: option `%s' is ambiguous\n", + argv[0], argv[optind]); + nextchar += strlen (nextchar); + optind++; + optopt = 0; + return '?'; + } + + if (pfound != NULL) + { + option_index = indfound; + optind++; + if (*nameend) + { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if (pfound->has_arg) + optarg = nameend + 1; + else + { + if (opterr) + if (argv[optind - 1][1] == '-') + /* --option */ + fprintf (stderr, + "%s: option `--%s' doesn't allow an argument\n", + argv[0], pfound->name); + else + /* +option or -option */ + fprintf (stderr, + "%s: option `%c%s' doesn't allow an argument\n", + argv[0], argv[optind - 1][0], pfound->name); + + nextchar += strlen (nextchar); + + optopt = pfound->val; + return '?'; + } + } + else if (pfound->has_arg == 1) + { + if (optind < argc) + optarg = argv[optind++]; + else + { + if (opterr) + fprintf (stderr, + "%s: option `%s' requires an argument\n", + argv[0], argv[optind - 1]); + nextchar += strlen (nextchar); + optopt = pfound->val; + return optstring[0] == ':' ? ':' : '?'; + } + } + nextchar += strlen (nextchar); + if (longind != NULL) + *longind = option_index; + if (pfound->flag) + { + *(pfound->flag) = pfound->val; + return 0; + } + return pfound->val; + } + + /* Can't find it as a long option. If this is not getopt_long_only, + or the option starts with '--' or is not a valid short + option, then it's an error. + Otherwise interpret it as a short option. */ + if (!long_only || argv[optind][1] == '-' + || my_index (optstring, *nextchar) == NULL) + { + if (opterr) + { + if (argv[optind][1] == '-') + /* --option */ + fprintf (stderr, "%s: unrecognized option `--%s'\n", + argv[0], nextchar); + else + /* +option or -option */ + fprintf (stderr, "%s: unrecognized option `%c%s'\n", + argv[0], argv[optind][0], nextchar); + } + nextchar = (char *) ""; + optind++; + optopt = 0; + return '?'; + } + } + + /* Look at and handle the next short option-character. */ + + { + char c = *nextchar++; + char *temp = my_index (optstring, c); + + /* Increment `optind' when we start to process its last character. */ + if (*nextchar == '\0') + ++optind; + + if (temp == NULL || c == ':') + { + if (opterr) + { + if (posixly_correct) + /* 1003.2 specifies the format of this message. */ + fprintf (stderr, "%s: illegal option -- %c\n", + argv[0], c); + else + fprintf (stderr, "%s: invalid option -- %c\n", + argv[0], c); + } + optopt = c; + return '?'; + } + /* Convenience. Treat POSIX -W foo same as long option --foo */ + if (temp[0] == 'W' && temp[1] == ';') + { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = 0; + int option_index; + + /* This is an option that requires an argument. */ + if (*nextchar != '\0') + { + optarg = nextchar; + /* If we end this ARGV-element by taking the rest as an arg, + we must advance to the next element now. */ + optind++; + } + else if (optind == argc) + { + if (opterr) + { + /* 1003.2 specifies the format of this message. */ + fprintf (stderr, "%s: option requires an argument -- %c\n", + argv[0], c); + } + optopt = c; + if (optstring[0] == ':') + c = ':'; + else + c = '?'; + return c; + } + else + /* We already incremented `optind' once; + increment it again when taking next ARGV-elt as argument. */ + optarg = argv[optind++]; + + /* optarg is now the argument, see if it's in the + table of longopts. */ + + for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match + or abbreviated matches. */ + for (p = longopts, option_index = 0; p->name; p++, option_index++) + if (!strncmp (p->name, nextchar, nameend - nextchar)) + { + if ((unsigned int) (nameend - nextchar) == strlen (p->name)) + { + /* Exact match found. */ + pfound = p; + indfound = option_index; + exact = 1; + break; + } + else if (pfound == NULL) + { + /* First nonexact match found. */ + pfound = p; + indfound = option_index; + } + else + /* Second or later nonexact match found. */ + ambig = 1; + } + if (ambig && !exact) + { + if (opterr) + fprintf (stderr, "%s: option `-W %s' is ambiguous\n", + argv[0], argv[optind]); + nextchar += strlen (nextchar); + optind++; + return '?'; + } + if (pfound != NULL) + { + option_index = indfound; + if (*nameend) + { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if (pfound->has_arg) + optarg = nameend + 1; + else + { + if (opterr) + fprintf (stderr, + "%s: option `-W %s' doesn't allow an argument\n", + argv[0], pfound->name); + + nextchar += strlen (nextchar); + return '?'; + } + } + else if (pfound->has_arg == 1) + { + if (optind < argc) + optarg = argv[optind++]; + else + { + if (opterr) + fprintf (stderr, + "%s: option `%s' requires an argument\n", + argv[0], argv[optind - 1]); + nextchar += strlen (nextchar); + return optstring[0] == ':' ? ':' : '?'; + } + } + nextchar += strlen (nextchar); + if (longind != NULL) + *longind = option_index; + if (pfound->flag) + { + *(pfound->flag) = pfound->val; + return 0; + } + return pfound->val; + } + nextchar = NULL; + return 'W'; /* Let the application handle it. */ + } + if (temp[1] == ':') + { + if (temp[2] == ':') + { + /* This is an option that accepts an argument optionally. */ + if (*nextchar != '\0') + { + optarg = nextchar; + optind++; + } + else + optarg = NULL; + nextchar = NULL; + } + else + { + /* This is an option that requires an argument. */ + if (*nextchar != '\0') + { + optarg = nextchar; + /* If we end this ARGV-element by taking the rest as an arg, + we must advance to the next element now. */ + optind++; + } + else if (optind == argc) + { + if (opterr) + { + /* 1003.2 specifies the format of this message. */ + fprintf (stderr, + "%s: option requires an argument -- %c\n", + argv[0], c); + } + optopt = c; + if (optstring[0] == ':') + c = ':'; + else + c = '?'; + } + else + /* We already incremented `optind' once; + increment it again when taking next ARGV-elt as argument. */ + optarg = argv[optind++]; + nextchar = NULL; + } + } + return c; + } +} + +int +getopt (argc, argv, optstring) + int argc; + char *const *argv; + const char *optstring; +{ + return _getopt_internal (argc, argv, optstring, + (const struct option *) 0, + (int *) 0, + 0); +} + +#endif /* Not ELIDE_CODE. */ + +#ifdef TEST + +/* Compile with -DTEST to make an executable for use in testing + the above definition of `getopt'. */ + +int +main (argc, argv) + int argc; + char **argv; +{ + int c; + int digit_optind = 0; + + while (1) + { + int this_option_optind = optind ? optind : 1; + + c = getopt (argc, argv, "abc:d:0123456789"); + if (c == -1) + break; + + switch (c) + { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + if (digit_optind != 0 && digit_optind != this_option_optind) + printf ("digits occur in two different argv-elements.\n"); + digit_optind = this_option_optind; + printf ("option %c\n", c); + break; + + case 'a': + printf ("option a\n"); + break; + + case 'b': + printf ("option b\n"); + break; + + case 'c': + printf ("option c with value `%s'\n", optarg); + break; + + case '?': + break; + + default: + printf ("?? getopt returned character code 0%o ??\n", c); + } + } + + if (optind < argc) + { + printf ("non-option ARGV-elements: "); + while (optind < argc) + printf ("%s ", argv[optind++]); + printf ("\n"); + } + + exit (0); +} + +#endif /* TEST */ diff --git a/src/getopt.h b/src/getopt.h new file mode 100644 index 00000000..ddf6fdda --- /dev/null +++ b/src/getopt.h @@ -0,0 +1,133 @@ +/* Declarations for getopt. + Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc. + +NOTE: The canonical source of this file is maintained with the GNU C Library. +Bugs can be reported to bug-glibc@prep.ai.mit.edu. + +This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef _GETOPT_H +#define _GETOPT_H 1 + +#ifdef __cplusplus +extern "C" { +#endif + +/* For communication from `getopt' to the caller. + When `getopt' finds an option that takes an argument, + the argument value is returned here. + Also, when `ordering' is RETURN_IN_ORDER, + each non-option ARGV-element is returned here. */ + +extern char *optarg; + +/* Index in ARGV of the next element to be scanned. + This is used for communication to and from the caller + and for communication between successive calls to `getopt'. + + On entry to `getopt', zero means this is the first call; initialize. + + When `getopt' returns -1, this is the index of the first of the + non-option elements that the caller should itself scan. + + Otherwise, `optind' communicates from one call to the next + how much of ARGV has been scanned so far. */ + +extern int optind; + +/* Callers store zero here to inhibit the error message `getopt' prints + for unrecognized options. */ + +extern int opterr; + +/* Set to an option character which was unrecognized. */ + +extern int optopt; + +/* Describe the long-named options requested by the application. + The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector + of `struct option' terminated by an element containing a name which is + zero. + + The field `has_arg' is: + no_argument (or 0) if the option does not take an argument, + required_argument (or 1) if the option requires an argument, + optional_argument (or 2) if the option takes an optional argument. + + If the field `flag' is not NULL, it points to a variable that is set + to the value given in the field `val' when the option is found, but + left unchanged if the option is not found. + + To have a long-named option do something other than set an `int' to + a compiled-in constant, such as set a value from `optarg', set the + option's `flag' field to zero and its `val' field to a nonzero + value (the equivalent single-letter option character, if there is + one). For long options that have a zero `flag' field, `getopt' + returns the contents of the `val' field. */ + +struct option +{ +#if defined (__STDC__) && __STDC__ + const char *name; +#else + char *name; +#endif + /* has_arg can't be an enum because some compilers complain about + type mismatches in all the code that assumes it is an int. */ + int has_arg; + int *flag; + int val; +}; + +/* Names for the values of the `has_arg' field of `struct option'. */ + +#define no_argument 0 +#define required_argument 1 +#define optional_argument 2 + +#if defined (__STDC__) && __STDC__ +#ifdef __GNU_LIBRARY__ +/* Many other libraries have conflicting prototypes for getopt, with + differences in the consts, in stdlib.h. To avoid compilation + errors, only prototype getopt for the GNU C library. */ +extern int getopt (int argc, char *const *argv, const char *shortopts); +#else /* not __GNU_LIBRARY__ */ +extern int getopt (); +#endif /* __GNU_LIBRARY__ */ +extern int getopt_long (int argc, char *const *argv, const char *shortopts, + const struct option *longopts, int *longind); +extern int getopt_long_only (int argc, char *const *argv, + const char *shortopts, + const struct option *longopts, int *longind); + +/* Internal only. Users should not call this directly. */ +extern int _getopt_internal (int argc, char *const *argv, + const char *shortopts, + const struct option *longopts, int *longind, + int long_only); +#else /* not __STDC__ */ +extern int getopt (); +extern int getopt_long (); +extern int getopt_long_only (); + +extern int _getopt_internal (); +#endif /* __STDC__ */ + +#ifdef __cplusplus +} +#endif + +#endif /* _GETOPT_H */ diff --git a/src/getopt1.c b/src/getopt1.c new file mode 100644 index 00000000..86545f2e --- /dev/null +++ b/src/getopt1.c @@ -0,0 +1,189 @@ +/* getopt_long and getopt_long_only entry points for GNU getopt. + Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc. + +NOTE: The canonical source of this file is maintained with the GNU C Library. +Bugs can be reported to bug-glibc@prep.ai.mit.edu. + +This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include "getopt.h" + +#if !defined (__STDC__) || !__STDC__ +/* This is a separate conditional since some stdc systems + reject `defined (const)'. */ +#ifndef const +#define const +#endif +#endif + +#include + +/* Comment out all this code if we are using the GNU C Library, and are not + actually compiling the library itself. This code is part of the GNU C + Library, but also included in many other GNU distributions. Compiling + and linking in this code is a waste when using the GNU C library + (especially if it is a shared library). Rather than having every GNU + program understand `configure --with-gnu-libc' and omit the object files, + it is simpler to just do this in the source for each such file. */ + +#define GETOPT_INTERFACE_VERSION 2 +#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 +#include +#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION +#define ELIDE_CODE +#endif +#endif + +#ifndef ELIDE_CODE + + +/* This needs to come after some library #include + to get __GNU_LIBRARY__ defined. */ +#ifdef __GNU_LIBRARY__ +#include +#endif + +#ifndef NULL +#define NULL 0 +#endif + +int +getopt_long (argc, argv, options, long_options, opt_index) + int argc; + char *const *argv; + const char *options; + const struct option *long_options; + int *opt_index; +{ + return _getopt_internal (argc, argv, options, long_options, opt_index, 0); +} + +/* Like getopt_long, but '-' as well as '--' can indicate a long option. + If an option that starts with '-' (not '--') doesn't match a long option, + but does match a short option, it is parsed as a short option + instead. */ + +int +getopt_long_only (argc, argv, options, long_options, opt_index) + int argc; + char *const *argv; + const char *options; + const struct option *long_options; + int *opt_index; +{ + return _getopt_internal (argc, argv, options, long_options, opt_index, 1); +} + + +#endif /* Not ELIDE_CODE. */ + +#ifdef TEST + +#include + +int +main (argc, argv) + int argc; + char **argv; +{ + int c; + int digit_optind = 0; + + while (1) + { + int this_option_optind = optind ? optind : 1; + int option_index = 0; + static struct option long_options[] = + { + {"add", 1, 0, 0}, + {"append", 0, 0, 0}, + {"delete", 1, 0, 0}, + {"verbose", 0, 0, 0}, + {"create", 0, 0, 0}, + {"file", 1, 0, 0}, + {0, 0, 0, 0} + }; + + c = getopt_long (argc, argv, "abc:d:0123456789", + long_options, &option_index); + if (c == -1) + break; + + switch (c) + { + case 0: + printf ("option %s", long_options[option_index].name); + if (optarg) + printf (" with arg %s", optarg); + printf ("\n"); + break; + + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + if (digit_optind != 0 && digit_optind != this_option_optind) + printf ("digits occur in two different argv-elements.\n"); + digit_optind = this_option_optind; + printf ("option %c\n", c); + break; + + case 'a': + printf ("option a\n"); + break; + + case 'b': + printf ("option b\n"); + break; + + case 'c': + printf ("option c with value `%s'\n", optarg); + break; + + case 'd': + printf ("option d with value `%s'\n", optarg); + break; + + case '?': + break; + + default: + printf ("?? getopt returned character code 0%o ??\n", c); + } + } + + if (optind < argc) + { + printf ("non-option ARGV-elements: "); + while (optind < argc) + printf ("%s ", argv[optind++]); + printf ("\n"); + } + + exit (0); +} + +#endif /* TEST */ diff --git a/src/ipv4.h b/src/ipv4.h new file mode 100644 index 00000000..80ab17c5 --- /dev/null +++ b/src/ipv4.h @@ -0,0 +1,137 @@ +/* + ipv4.h -- missing IPv4 related definitions + Copyright (C) 2005 Ivo Timmermans + 2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_IPV4_H__ +#define __TINC_IPV4_H__ + +#ifndef AF_INET +#define AF_INET 2 +#endif + +#ifndef IPPROTO_ICMP +#define IPPROTO_ICMP 1 +#endif + +#ifndef ICMP_DEST_UNREACH +#define ICMP_DEST_UNREACH 3 +#endif + +#ifndef ICMP_FRAG_NEEDED +#define ICMP_FRAG_NEEDED 4 +#endif + +#ifndef ICMP_NET_UNKNOWN +#define ICMP_NET_UNKNOWN 6 +#endif + +#ifndef ICMP_NET_UNREACH +#define ICMP_NET_UNREACH 0 +#endif + +#ifndef IP_MSS +#define IP_MSS 576 +#endif + +#ifndef HAVE_STRUCT_IP +struct ip { +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned int ip_hl:4; + unsigned int ip_v:4; +#else + unsigned int ip_v:4; + unsigned int ip_hl:4; +#endif + uint8_t ip_tos; + uint16_t ip_len; + uint16_t ip_id; + uint16_t ip_off; +#define IP_RF 0x8000 +#define IP_DF 0x4000 +#define IP_MF 0x2000 + uint8_t ip_ttl; + uint8_t ip_p; + uint16_t ip_sum; + struct in_addr ip_src, ip_dst; +} __attribute__ ((__packed__)); +#endif + +#ifndef IP_OFFMASK +#define IP_OFFMASK 0x1fff +#endif + +#ifndef HAVE_STRUCT_ICMP +struct icmp { + uint8_t icmp_type; + uint8_t icmp_code; + uint16_t icmp_cksum; + union { + uint8_t ih_pptr; + struct in_addr ih_gwaddr; + struct ih_idseq { + uint16_t icd_id; + uint16_t icd_seq; + } ih_idseq; + uint32_t ih_void; + + + struct ih_pmtu { + uint16_t ipm_void; + uint16_t ipm_nextmtu; + } ih_pmtu; + + struct ih_rtradv { + uint8_t irt_num_addrs; + uint8_t irt_wpa; + uint16_t irt_lifetime; + } ih_rtradv; + } icmp_hun; +#define icmp_pptr icmp_hun.ih_pptr +#define icmp_gwaddr icmp_hun.ih_gwaddr +#define icmp_id icmp_hun.ih_idseq.icd_id +#define icmp_seq icmp_hun.ih_idseq.icd_seq +#define icmp_void icmp_hun.ih_void +#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void +#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu +#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs +#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa +#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime + union { + struct { + uint32_t its_otime; + uint32_t its_rtime; + uint32_t its_ttime; + } id_ts; + struct { + struct ip idi_ip; + } id_ip; + uint32_t id_mask; + uint8_t id_data[1]; + } icmp_dun; +#define icmp_otime icmp_dun.id_ts.its_otime +#define icmp_rtime icmp_dun.id_ts.its_rtime +#define icmp_ttime icmp_dun.id_ts.its_ttime +#define icmp_ip icmp_dun.id_ip.idi_ip +#define icmp_radv icmp_dun.id_radv +#define icmp_mask icmp_dun.id_mask +#define icmp_data icmp_dun.id_data +} __attribute__ ((__packed__)); +#endif + +#endif /* __TINC_IPV4_H__ */ diff --git a/src/ipv6.h b/src/ipv6.h new file mode 100644 index 00000000..fee74f5e --- /dev/null +++ b/src/ipv6.h @@ -0,0 +1,127 @@ +/* + ipv6.h -- missing IPv6 related definitions + Copyright (C) 2005 Ivo Timmermans + 2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_IPV6_H__ +#define __TINC_IPV6_H__ + +#ifndef AF_INET6 +#define AF_INET6 10 +#endif + +#ifndef IPPROTO_ICMPV6 +#define IPPROTO_ICMPV6 58 +#endif + +#ifndef HAVE_STRUCT_IN6_ADDR +struct in6_addr { + union { + uint8_t u6_addr8[16]; + uint16_t u6_addr16[8]; + uint32_t u6_addr32[4]; + } in6_u; +} __attribute__ ((__packed__)); +#define s6_addr in6_u.u6_addr8 +#define s6_addr16 in6_u.u6_addr16 +#define s6_addr32 in6_u.u6_addr32 +#endif + +#ifndef HAVE_STRUCT_SOCKADDR_IN6 +struct sockaddr_in6 { + uint16_t sin6_family; + uint16_t sin6_port; + uint32_t sin6_flowinfo; + struct in6_addr sin6_addr; + uint32_t sin6_scope_id; +} __attribute__ ((__packed__)); +#endif + +#ifndef IN6_IS_ADDR_V4MAPPED +#define IN6_IS_ADDR_V4MAPPED(a) \ + ((((__const uint32_t *) (a))[0] == 0) \ + && (((__const uint32_t *) (a))[1] == 0) \ + && (((__const uint32_t *) (a))[2] == htonl (0xffff))) +#endif + +#ifndef HAVE_STRUCT_IP6_HDR +struct ip6_hdr { + union { + struct ip6_hdrctl { + uint32_t ip6_un1_flow; + uint16_t ip6_un1_plen; + uint8_t ip6_un1_nxt; + uint8_t ip6_un1_hlim; + } ip6_un1; + uint8_t ip6_un2_vfc; + } ip6_ctlun; + struct in6_addr ip6_src; + struct in6_addr ip6_dst; +} __attribute__ ((__packed__)); +#define ip6_vfc ip6_ctlun.ip6_un2_vfc +#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow +#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen +#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt +#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim +#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim +#endif + +#ifndef HAVE_STRUCT_ICMP6_HDR +struct icmp6_hdr { + uint8_t icmp6_type; + uint8_t icmp6_code; + uint16_t icmp6_cksum; + union { + uint32_t icmp6_un_data32[1]; + uint16_t icmp6_un_data16[2]; + uint8_t icmp6_un_data8[4]; + } icmp6_dataun; +} __attribute__ ((__packed__)); +#define ICMP6_DST_UNREACH_NOROUTE 0 +#define ICMP6_DST_UNREACH 1 +#define ICMP6_PACKET_TOO_BIG 2 +#define ICMP6_DST_UNREACH_ADDR 3 +#define ND_NEIGHBOR_SOLICIT 135 +#define ND_NEIGHBOR_ADVERT 136 +#define icmp6_data32 icmp6_dataun.icmp6_un_data32 +#define icmp6_data16 icmp6_dataun.icmp6_un_data16 +#define icmp6_data8 icmp6_dataun.icmp6_un_data8 +#define icmp6_mtu icmp6_data32[0] +#endif + +#ifndef HAVE_STRUCT_ND_NEIGHBOR_SOLICIT +struct nd_neighbor_solicit { + struct icmp6_hdr nd_ns_hdr; + struct in6_addr nd_ns_target; +} __attribute__ ((__packed__)); +#define ND_OPT_SOURCE_LINKADDR 1 +#define ND_OPT_TARGET_LINKADDR 2 +#define nd_ns_type nd_ns_hdr.icmp6_type +#define nd_ns_code nd_ns_hdr.icmp6_code +#define nd_ns_cksum nd_ns_hdr.icmp6_cksum +#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] +#endif + +#ifndef HAVE_STRUCT_ND_OPT_HDR +struct nd_opt_hdr { + uint8_t nd_opt_type; + uint8_t nd_opt_len; +} __attribute__ ((__packed__)); +#endif + +#endif /* __TINC_IPV6_H__ */ diff --git a/src/list.c b/src/list.c new file mode 100644 index 00000000..a26c58d6 --- /dev/null +++ b/src/list.c @@ -0,0 +1,169 @@ +/* + list.c -- functions to deal with double linked lists + Copyright (C) 2000-2005 Ivo Timmermans + 2000-2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "system.h" + +#include "list.h" +#include "xalloc.h" + +/* (De)constructors */ + +list_t *list_alloc(list_action_t delete) { + list_t *list; + + list = xmalloc_and_zero(sizeof(list_t)); + list->delete = delete; + + return list; +} + +void list_free(list_t *list) { + free(list); +} + +list_node_t *list_alloc_node(void) { + return xmalloc_and_zero(sizeof(list_node_t)); +} + +void list_free_node(list_t *list, list_node_t *node) { + if(node->data && list->delete) + list->delete(node->data); + + free(node); +} + +/* Insertion and deletion */ + +list_node_t *list_insert_head(list_t *list, void *data) { + list_node_t *node; + + node = list_alloc_node(); + + node->data = data; + node->prev = NULL; + node->next = list->head; + list->head = node; + + if(node->next) + node->next->prev = node; + else + list->tail = node; + + list->count++; + + return node; +} + +list_node_t *list_insert_tail(list_t *list, void *data) { + list_node_t *node; + + node = list_alloc_node(); + + node->data = data; + node->next = NULL; + node->prev = list->tail; + list->tail = node; + + if(node->prev) + node->prev->next = node; + else + list->head = node; + + list->count++; + + return node; +} + +void list_unlink_node(list_t *list, list_node_t *node) { + if(node->prev) + node->prev->next = node->next; + else + list->head = node->next; + + if(node->next) + node->next->prev = node->prev; + else + list->tail = node->prev; + + list->count--; +} + +void list_delete_node(list_t *list, list_node_t *node) { + list_unlink_node(list, node); + list_free_node(list, node); +} + +void list_delete_head(list_t *list) { + list_delete_node(list, list->head); +} + +void list_delete_tail(list_t *list) { + list_delete_node(list, list->tail); +} + +/* Head/tail lookup */ + +void *list_get_head(list_t *list) { + if(list->head) + return list->head->data; + else + return NULL; +} + +void *list_get_tail(list_t *list) { + if(list->tail) + return list->tail->data; + else + return NULL; +} + +/* Fast list deletion */ + +void list_delete_list(list_t *list) { + list_node_t *node, *next; + + for(node = list->head; node; node = next) { + next = node->next; + list_free_node(list, node); + } + + list_free(list); +} + +/* Traversing */ + +void list_foreach_node(list_t *list, list_action_node_t action) { + list_node_t *node, *next; + + for(node = list->head; node; node = next) { + next = node->next; + action(node); + } +} + +void list_foreach(list_t *list, list_action_t action) { + list_node_t *node, *next; + + for(node = list->head; node; node = next) { + next = node->next; + if(node->data) + action(node->data); + } +} diff --git a/src/list.h b/src/list.h new file mode 100644 index 00000000..197fbb8b --- /dev/null +++ b/src/list.h @@ -0,0 +1,78 @@ +/* + list.h -- header file for list.c + Copyright (C) 2000-2005 Ivo Timmermans + 2000-2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_LIST_H__ +#define __TINC_LIST_H__ + +typedef struct list_node_t { + struct list_node_t *prev; + struct list_node_t *next; + + /* Payload */ + + void *data; +} list_node_t; + +typedef void (*list_action_t)(const void *); +typedef void (*list_action_node_t)(const list_node_t *); + +typedef struct list_t { + list_node_t *head; + list_node_t *tail; + int count; + + /* Callbacks */ + + list_action_t delete; +} list_t; + +/* (De)constructors */ + +extern list_t *list_alloc(list_action_t) __attribute__ ((__malloc__)); +extern void list_free(list_t *); +extern list_node_t *list_alloc_node(void); +extern void list_free_node(list_t *, list_node_t *); + +/* Insertion and deletion */ + +extern list_node_t *list_insert_head(list_t *, void *); +extern list_node_t *list_insert_tail(list_t *, void *); + +extern void list_unlink_node(list_t *, list_node_t *); +extern void list_delete_node(list_t *, list_node_t *); + +extern void list_delete_head(list_t *); +extern void list_delete_tail(list_t *); + +/* Head/tail lookup */ + +extern void *list_get_head(list_t *); +extern void *list_get_tail(list_t *); + +/* Fast list deletion */ + +extern void list_delete_list(list_t *); + +/* Traversing */ + +extern void list_foreach(list_t *, list_action_t); +extern void list_foreach_node(list_t *, list_action_node_t); + +#endif /* __TINC_LIST_H__ */ diff --git a/src/malloc.c b/src/malloc.c new file mode 100644 index 00000000..2a996d44 --- /dev/null +++ b/src/malloc.c @@ -0,0 +1,39 @@ +/* Work around bug on some systems where malloc (0) fails. + Copyright (C) 1997 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., Foundation, + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ + +/* written by Jim Meyering */ + +#if HAVE_CONFIG_H +# include +#endif +#undef malloc + +#include + +char *malloc (); + +/* Allocate an N-byte block of memory from the heap. + If N is zero, allocate a 1-byte block. */ + +char * +rpl_malloc (n) + size_t n; +{ + if (n == 0) + n = 1; + return malloc (n); +} diff --git a/src/memcmp.c b/src/memcmp.c new file mode 100644 index 00000000..9d808338 --- /dev/null +++ b/src/memcmp.c @@ -0,0 +1,391 @@ +/* Copyright (C) 1991, 1993, 1995, 1997, 1998 Free Software Foundation, Inc. + Contributed by Torbjorn Granlund (tege@sics.se). + + NOTE: The canonical source of this file is maintained with the GNU C Library. + Bugs can be reported to bug-glibc@prep.ai.mit.edu. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#undef __ptr_t +#if defined __cplusplus || (defined __STDC__ && __STDC__) +# define __ptr_t void * +#else /* Not C++ or ANSI C. */ +# undef const +# define const +# define __ptr_t char * +#endif /* C++ or ANSI C. */ + +#ifndef __P +# if defined __GNUC__ || (defined __STDC__ && __STDC__) +# define __P(args) args +# else +# define __P(args) () +# endif /* GCC. */ +#endif /* Not __P. */ + +#if defined HAVE_STRING_H || defined _LIBC +# include +#endif + +#undef memcmp + +#ifdef _LIBC + +# include + +#else /* Not in the GNU C library. */ + +# include + +/* Type to use for aligned memory operations. + This should normally be the biggest type supported by a single load + and store. Must be an unsigned type. */ +# define op_t unsigned long int +# define OPSIZ (sizeof(op_t)) + +/* Threshold value for when to enter the unrolled loops. */ +# define OP_T_THRES 16 + +/* Type to use for unaligned operations. */ +typedef unsigned char byte; + +# ifndef WORDS_BIGENDIAN +# define MERGE(w0, sh_1, w1, sh_2) (((w0) >> (sh_1)) | ((w1) << (sh_2))) +# else +# define MERGE(w0, sh_1, w1, sh_2) (((w0) << (sh_1)) | ((w1) >> (sh_2))) +# endif + +#endif /* In the GNU C library. */ + +#ifdef WORDS_BIGENDIAN +# define CMP_LT_OR_GT(a, b) ((a) > (b) ? 1 : -1) +#else +# define CMP_LT_OR_GT(a, b) memcmp_bytes ((a), (b)) +#endif + +/* BE VERY CAREFUL IF YOU CHANGE THIS CODE! */ + +/* The strategy of this memcmp is: + + 1. Compare bytes until one of the block pointers is aligned. + + 2. Compare using memcmp_common_alignment or + memcmp_not_common_alignment, regarding the alignment of the other + block after the initial byte operations. The maximum number of + full words (of type op_t) are compared in this way. + + 3. Compare the few remaining bytes. */ + +#ifndef WORDS_BIGENDIAN +/* memcmp_bytes -- Compare A and B bytewise in the byte order of the machine. + A and B are known to be different. + This is needed only on little-endian machines. */ + +static int memcmp_bytes __P((op_t, op_t)); + +# ifdef __GNUC__ +__inline +# endif +static int +memcmp_bytes (a, b) + op_t a, b; +{ + long int srcp1 = (long int) &a; + long int srcp2 = (long int) &b; + op_t a0, b0; + + do + { + a0 = ((byte *) srcp1)[0]; + b0 = ((byte *) srcp2)[0]; + srcp1 += 1; + srcp2 += 1; + } + while (a0 == b0); + return a0 - b0; +} +#endif + +static int memcmp_common_alignment __P((long, long, size_t)); + +/* memcmp_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN `op_t' + objects (not LEN bytes!). Both SRCP1 and SRCP2 should be aligned for + memory operations on `op_t's. */ +#ifdef __GNUC__ +__inline +#endif +static int +memcmp_common_alignment (srcp1, srcp2, len) + long int srcp1; + long int srcp2; + size_t len; +{ + op_t a0, a1; + op_t b0, b1; + + switch (len % 4) + { + default: /* Avoid warning about uninitialized local variables. */ + case 2: + a0 = ((op_t *) srcp1)[0]; + b0 = ((op_t *) srcp2)[0]; + srcp1 -= 2 * OPSIZ; + srcp2 -= 2 * OPSIZ; + len += 2; + goto do1; + case 3: + a1 = ((op_t *) srcp1)[0]; + b1 = ((op_t *) srcp2)[0]; + srcp1 -= OPSIZ; + srcp2 -= OPSIZ; + len += 1; + goto do2; + case 0: + if (OP_T_THRES <= 3 * OPSIZ && len == 0) + return 0; + a0 = ((op_t *) srcp1)[0]; + b0 = ((op_t *) srcp2)[0]; + goto do3; + case 1: + a1 = ((op_t *) srcp1)[0]; + b1 = ((op_t *) srcp2)[0]; + srcp1 += OPSIZ; + srcp2 += OPSIZ; + len -= 1; + if (OP_T_THRES <= 3 * OPSIZ && len == 0) + goto do0; + /* Fall through. */ + } + + do + { + a0 = ((op_t *) srcp1)[0]; + b0 = ((op_t *) srcp2)[0]; + if (a1 != b1) + return CMP_LT_OR_GT (a1, b1); + + do3: + a1 = ((op_t *) srcp1)[1]; + b1 = ((op_t *) srcp2)[1]; + if (a0 != b0) + return CMP_LT_OR_GT (a0, b0); + + do2: + a0 = ((op_t *) srcp1)[2]; + b0 = ((op_t *) srcp2)[2]; + if (a1 != b1) + return CMP_LT_OR_GT (a1, b1); + + do1: + a1 = ((op_t *) srcp1)[3]; + b1 = ((op_t *) srcp2)[3]; + if (a0 != b0) + return CMP_LT_OR_GT (a0, b0); + + srcp1 += 4 * OPSIZ; + srcp2 += 4 * OPSIZ; + len -= 4; + } + while (len != 0); + + /* This is the right position for do0. Please don't move + it into the loop. */ + do0: + if (a1 != b1) + return CMP_LT_OR_GT (a1, b1); + return 0; +} + +static int memcmp_not_common_alignment __P((long, long, size_t)); + +/* memcmp_not_common_alignment -- Compare blocks at SRCP1 and SRCP2 with LEN + `op_t' objects (not LEN bytes!). SRCP2 should be aligned for memory + operations on `op_t', but SRCP1 *should be unaligned*. */ +#ifdef __GNUC__ +__inline +#endif +static int +memcmp_not_common_alignment (srcp1, srcp2, len) + long int srcp1; + long int srcp2; + size_t len; +{ + op_t a0, a1, a2, a3; + op_t b0, b1, b2, b3; + op_t x; + int shl, shr; + + /* Calculate how to shift a word read at the memory operation + aligned srcp1 to make it aligned for comparison. */ + + shl = 8 * (srcp1 % OPSIZ); + shr = 8 * OPSIZ - shl; + + /* Make SRCP1 aligned by rounding it down to the beginning of the `op_t' + it points in the middle of. */ + srcp1 &= -OPSIZ; + + switch (len % 4) + { + default: /* Avoid warning about uninitialized local variables. */ + case 2: + a1 = ((op_t *) srcp1)[0]; + a2 = ((op_t *) srcp1)[1]; + b2 = ((op_t *) srcp2)[0]; + srcp1 -= 1 * OPSIZ; + srcp2 -= 2 * OPSIZ; + len += 2; + goto do1; + case 3: + a0 = ((op_t *) srcp1)[0]; + a1 = ((op_t *) srcp1)[1]; + b1 = ((op_t *) srcp2)[0]; + srcp2 -= 1 * OPSIZ; + len += 1; + goto do2; + case 0: + if (OP_T_THRES <= 3 * OPSIZ && len == 0) + return 0; + a3 = ((op_t *) srcp1)[0]; + a0 = ((op_t *) srcp1)[1]; + b0 = ((op_t *) srcp2)[0]; + srcp1 += 1 * OPSIZ; + goto do3; + case 1: + a2 = ((op_t *) srcp1)[0]; + a3 = ((op_t *) srcp1)[1]; + b3 = ((op_t *) srcp2)[0]; + srcp1 += 2 * OPSIZ; + srcp2 += 1 * OPSIZ; + len -= 1; + if (OP_T_THRES <= 3 * OPSIZ && len == 0) + goto do0; + /* Fall through. */ + } + + do + { + a0 = ((op_t *) srcp1)[0]; + b0 = ((op_t *) srcp2)[0]; + x = MERGE(a2, shl, a3, shr); + if (x != b3) + return CMP_LT_OR_GT (x, b3); + + do3: + a1 = ((op_t *) srcp1)[1]; + b1 = ((op_t *) srcp2)[1]; + x = MERGE(a3, shl, a0, shr); + if (x != b0) + return CMP_LT_OR_GT (x, b0); + + do2: + a2 = ((op_t *) srcp1)[2]; + b2 = ((op_t *) srcp2)[2]; + x = MERGE(a0, shl, a1, shr); + if (x != b1) + return CMP_LT_OR_GT (x, b1); + + do1: + a3 = ((op_t *) srcp1)[3]; + b3 = ((op_t *) srcp2)[3]; + x = MERGE(a1, shl, a2, shr); + if (x != b2) + return CMP_LT_OR_GT (x, b2); + + srcp1 += 4 * OPSIZ; + srcp2 += 4 * OPSIZ; + len -= 4; + } + while (len != 0); + + /* This is the right position for do0. Please don't move + it into the loop. */ + do0: + x = MERGE(a2, shl, a3, shr); + if (x != b3) + return CMP_LT_OR_GT (x, b3); + return 0; +} + +int +rpl_memcmp (s1, s2, len) + const __ptr_t s1; + const __ptr_t s2; + size_t len; +{ + op_t a0; + op_t b0; + long int srcp1 = (long int) s1; + long int srcp2 = (long int) s2; + op_t res; + + if (len >= OP_T_THRES) + { + /* There are at least some bytes to compare. No need to test + for LEN == 0 in this alignment loop. */ + while (srcp2 % OPSIZ != 0) + { + a0 = ((byte *) srcp1)[0]; + b0 = ((byte *) srcp2)[0]; + srcp1 += 1; + srcp2 += 1; + res = a0 - b0; + if (res != 0) + return res; + len -= 1; + } + + /* SRCP2 is now aligned for memory operations on `op_t'. + SRCP1 alignment determines if we can do a simple, + aligned compare or need to shuffle bits. */ + + if (srcp1 % OPSIZ == 0) + res = memcmp_common_alignment (srcp1, srcp2, len / OPSIZ); + else + res = memcmp_not_common_alignment (srcp1, srcp2, len / OPSIZ); + if (res != 0) + return res; + + /* Number of bytes remaining in the interval [0..OPSIZ-1]. */ + srcp1 += len & -OPSIZ; + srcp2 += len & -OPSIZ; + len %= OPSIZ; + } + + /* There are just a few bytes to compare. Use byte memory operations. */ + while (len != 0) + { + a0 = ((byte *) srcp1)[0]; + b0 = ((byte *) srcp2)[0]; + srcp1 += 1; + srcp2 += 1; + res = a0 - b0; + if (res != 0) + return res; + len -= 1; + } + + return 0; +} + +#ifdef weak_alias +# undef bcmp +weak_alias (memcmp, bcmp) +#endif diff --git a/src/realloc.c b/src/realloc.c new file mode 100644 index 00000000..4971b28f --- /dev/null +++ b/src/realloc.c @@ -0,0 +1,44 @@ +/* Work around bug on some systems where realloc (NULL, 0) fails. + Copyright (C) 1997 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., Foundation, + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ + +/* written by Jim Meyering */ + +#if HAVE_CONFIG_H +# include +#endif +#undef realloc + +#include + +char *malloc (); +char *realloc (); + +/* Change the size of an allocated block of memory P to N bytes, + with error checking. If N is zero, change it to 1. If P is NULL, + use malloc. */ + +char * +rpl_realloc (p, n) + char *p; + size_t n; +{ + if (n == 0) + n = 1; + if (p == 0) + return malloc (n); + return realloc (p, n); +} diff --git a/src/splay_tree.c b/src/splay_tree.c new file mode 100644 index 00000000..3a792e8b --- /dev/null +++ b/src/splay_tree.c @@ -0,0 +1,561 @@ +/* + splay_tree.c -- splay tree and linked list convenience + Copyright (C) 2004-2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "system.h" + +#include "splay_tree.h" +#include "xalloc.h" + +/* Splay operation */ + +static splay_node_t *splay_top_down(splay_tree_t *tree, const void *data, int *result) { + splay_node_t left = {0}, right = {0}; + splay_node_t *leftbottom = &left, *rightbottom = &right, *child, *grandchild; + splay_node_t *root = tree->root; + int c; + + if(!root) { + if(result) + *result = 0; + return NULL; + } + + while((c = tree->compare(data, root->data))) { + if(c < 0 && (child = root->left)) { + c = tree->compare(data, child->data); + + if(c < 0 && (grandchild = child->left)) { + rightbottom->left = child; + child->parent = rightbottom; + rightbottom = child; + + if((root->left = child->right)) + child->right->parent = root; + + child->right = root; + root->parent = child; + + child->left = NULL; + grandchild->parent = NULL; + + root = grandchild; + } else if (c > 0 && (grandchild = child->right)) { + leftbottom->right = child; + child->parent = leftbottom; + leftbottom = child; + + child->right = NULL; + grandchild->parent = NULL; + + rightbottom->left = root; + root->parent = rightbottom; + rightbottom = root; + + root->left = NULL; + + root = grandchild; + } else { + rightbottom->left = root; + root->parent = rightbottom; + rightbottom = root; + + root->left = NULL; + child->parent = NULL; + + root = child; + break; + } + } else if(c > 0 && (child = root->right)) { + c = tree->compare(data, child->data); + + if(c > 0 && (grandchild = child->right)) { + leftbottom->right = child; + child->parent = leftbottom; + leftbottom = child; + + if((root->right = child->left)) + child->left->parent = root; + + child->left = root; + root->parent = child; + + child->right = NULL; + grandchild->parent = NULL; + + root = grandchild; + } else if (c < 0 && (grandchild = child->left)) { + rightbottom->left = child; + child->parent = rightbottom; + rightbottom = child; + + child->left = NULL; + grandchild->parent = NULL; + + leftbottom->right = root; + root->parent = leftbottom; + leftbottom = root; + + root->right = NULL; + + root = grandchild; + } else { + leftbottom->right = root; + root->parent = leftbottom; + leftbottom = root; + + root->right = NULL; + child->parent = NULL; + + root = child; + break; + } + } else { + break; + } + } + + /* Merge trees */ + + if(left.right) { + if(root->left) { + leftbottom->right = root->left; + root->left->parent = leftbottom; + } + root->left = left.right; + left.right->parent = root; + } + + if(right.left) { + if(root->right) { + rightbottom->left = root->right; + root->right->parent = rightbottom; + } + root->right = right.left; + right.left->parent = root; + } + + /* Return result */ + + tree->root = root; + if(result) + *result = c; + + return tree->root; +} + +static void splay_bottom_up(splay_tree_t *tree, splay_node_t *node) { + splay_node_t *parent, *grandparent, *greatgrandparent; + + while((parent = node->parent)) { + if(!(grandparent = parent->parent)) { /* zig */ + if(node == parent->left) { + if((parent->left = node->right)) + parent->left->parent = parent; + node->right = parent; + } else { + if((parent->right = node->left)) + parent->right->parent = parent; + node->left = parent; + } + + parent->parent = node; + node->parent = NULL; + } else { + greatgrandparent = grandparent->parent; + + if(node == parent->left && parent == grandparent->left) { /* left zig-zig */ + if((grandparent->left = parent->right)) + grandparent->left->parent = grandparent; + parent->right = grandparent; + grandparent->parent = parent; + + if((parent->left = node->right)) + parent->left->parent = parent; + node->right = parent; + parent->parent = node; + } else if(node == parent->right && parent == grandparent->right) { /* right zig-zig */ + if((grandparent->right = parent->left)) + grandparent->right->parent = grandparent; + parent->left = grandparent; + grandparent->parent = parent; + + if((parent->right = node->left)) + parent->right->parent = parent; + node->left = parent; + parent->parent = node; + } else if(node == parent->right && parent == grandparent->left) { /* left-right zig-zag */ + if((parent->right = node->left)) + parent->right->parent = parent; + node->left = parent; + parent->parent = node; + + if((grandparent->left = node->right)) + grandparent->left->parent = grandparent; + node->right = grandparent; + grandparent->parent = node; + } else { /* right-left zig-zag */ + if((parent->left = node->right)) + parent->left->parent = parent; + node->right = parent; + parent->parent = node; + + if((grandparent->right = node->left)) + grandparent->right->parent = grandparent; + node->left = grandparent; + grandparent->parent = node; + } + + if((node->parent = greatgrandparent)) { + if(grandparent == greatgrandparent->left) + greatgrandparent->left = node; + else + greatgrandparent->right = node; + } + } + } + + tree->root = node; +} + +/* (De)constructors */ + +splay_tree_t *splay_alloc_tree(splay_compare_t compare, splay_action_t delete) { + splay_tree_t *tree; + + tree = xmalloc_and_zero(sizeof(splay_tree_t)); + tree->compare = compare; + tree->delete = delete; + + return tree; +} + +void splay_free_tree(splay_tree_t *tree) { + free(tree); +} + +splay_node_t *splay_alloc_node(void) { + return xmalloc_and_zero(sizeof(splay_node_t)); +} + +void splay_free_node(splay_tree_t *tree, splay_node_t *node) { + if(node->data && tree->delete) + tree->delete(node->data); + + free(node); +} + +/* Searching */ + +void *splay_search(splay_tree_t *tree, const void *data) { + splay_node_t *node; + + node = splay_search_node(tree, data); + + return node ? node->data : NULL; +} + +void *splay_search_closest(splay_tree_t *tree, const void *data, int *result) { + splay_node_t *node; + + node = splay_search_closest_node(tree, data, result); + + return node ? node->data : NULL; +} + +void *splay_search_closest_smaller(splay_tree_t *tree, const void *data) { + splay_node_t *node; + + node = splay_search_closest_smaller_node(tree, data); + + return node ? node->data : NULL; +} + +void *splay_search_closest_greater(splay_tree_t *tree, const void *data) { + splay_node_t *node; + + node = splay_search_closest_greater_node(tree, data); + + return node ? node->data : NULL; +} + +splay_node_t *splay_search_node(splay_tree_t *tree, const void *data) { + splay_node_t *node; + int result; + + node = splay_search_closest_node(tree, data, &result); + + return result ? NULL : node; +} + +splay_node_t *splay_search_closest_node_nosplay(const splay_tree_t *tree, const void *data, int *result) { + splay_node_t *node; + int c; + + node = tree->root; + + if(!node) { + if(result) + *result = 0; + return NULL; + } + + for(;;) { + c = tree->compare(data, node->data); + + if(c < 0) { + if(node->left) + node = node->left; + else + break; + } else if(c > 0) { + if(node->right) + node = node->right; + else + break; + } else { + break; + } + } + + if(result) + *result = c; + return node; +} + +splay_node_t *splay_search_closest_node(splay_tree_t *tree, const void *data, int *result) { + return splay_top_down(tree, data, result); +} + +splay_node_t *splay_search_closest_smaller_node(splay_tree_t *tree, const void *data) { + splay_node_t *node; + int result; + + node = splay_search_closest_node(tree, data, &result); + + if(result < 0) + node = node->prev; + + return node; +} + +splay_node_t *splay_search_closest_greater_node(splay_tree_t *tree, const void *data) { + splay_node_t *node; + int result; + + node = splay_search_closest_node(tree, data, &result); + + if(result > 0) + node = node->next; + + return node; +} + +/* Insertion and deletion */ + +splay_node_t *splay_insert(splay_tree_t *tree, void *data) { + splay_node_t *closest, *new; + int result; + + if(!tree->root) { + new = splay_alloc_node(); + new->data = data; + splay_insert_top(tree, new); + } else { + closest = splay_search_closest_node(tree, data, &result); + + if(!result) + return NULL; + + new = splay_alloc_node(); + new->data = data; + + if(result < 0) + splay_insert_before(tree, closest, new); + else + splay_insert_after(tree, closest, new); + } + + return new; +} + +splay_node_t *splay_insert_node(splay_tree_t *tree, splay_node_t *node) { + splay_node_t *closest; + int result; + + if(!tree->root) + splay_insert_top(tree, node); + else { + closest = splay_search_closest_node(tree, node->data, &result); + + if(!result) + return NULL; + + if(result < 0) + splay_insert_before(tree, closest, node); + else + splay_insert_after(tree, closest, node); + } + + return node; +} + +void splay_insert_top(splay_tree_t *tree, splay_node_t *node) { + node->prev = node->next = node->left = node->right = node->parent = NULL; + tree->head = tree->tail = tree->root = node; +} + +void splay_insert_before(splay_tree_t *tree, splay_node_t *before, splay_node_t *node) { + if(!before) { + if(tree->tail) + splay_insert_after(tree, tree->tail, node); + else + splay_insert_top(tree, node); + return; + } + + node->next = before; + if((node->prev = before->prev)) + before->prev->next = node; + else + tree->head = node; + before->prev = node; + + splay_bottom_up(tree, before); + + node->right = before; + before->parent = node; + if((node->left = before->left)) + before->left->parent = node; + before->left = NULL; + + node->parent = NULL; + tree->root = node; +} + +void splay_insert_after(splay_tree_t *tree, splay_node_t *after, splay_node_t *node) { + if(!after) { + if(tree->head) + splay_insert_before(tree, tree->head, node); + else + splay_insert_top(tree, node); + return; + } + + node->prev = after; + if((node->next = after->next)) + after->next->prev = node; + else + tree->tail = node; + after->next = node; + + splay_bottom_up(tree, after); + + node->left = after; + after->parent = node; + if((node->right = after->right)) + after->right->parent = node; + after->right = NULL; + + node->parent = NULL; + tree->root = node; +} + +splay_node_t *splay_unlink(splay_tree_t *tree, void *data) { + splay_node_t *node; + + node = splay_search_node(tree, data); + + if(node) + splay_unlink_node(tree, node); + + return node; +} + +void splay_unlink_node(splay_tree_t *tree, splay_node_t *node) { + if(node->prev) + node->prev->next = node->next; + else + tree->head = node->next; + + if(node->next) + node->next->prev = node->prev; + else + tree->tail = node->prev; + + splay_bottom_up(tree, node); + + if(node->prev) { + node->left->parent = NULL; + tree->root = node->left; + if((node->prev->right = node->right)) + node->right->parent = node->prev; + } else if(node->next) { + tree->root = node->right; + node->right->parent = NULL; + } else { + tree->root = NULL; + } +} + +void splay_delete_node(splay_tree_t *tree, splay_node_t *node) { + splay_unlink_node(tree, node); + splay_free_node(tree, node); +} + +void splay_delete(splay_tree_t *tree, void *data) { + splay_node_t *node; + + node = splay_search_node(tree, data); + + if(node) + splay_delete_node(tree, node); +} + +/* Fast tree cleanup */ + +void splay_delete_tree(splay_tree_t *tree) { + splay_node_t *node, *next; + + for(node = tree->head; node; node = next) { + next = node->next; + splay_free_node(tree, node); + } + + splay_free_tree(tree); +} + +/* Tree walking */ + +void splay_foreach(const splay_tree_t *tree, splay_action_t action) { + splay_node_t *node, *next; + + for(node = tree->head; node; node = next) { + next = node->next; + action(node->data); + } +} + +void splay_foreach_node(const splay_tree_t *tree, splay_action_t action) { + splay_node_t *node, *next; + + for(node = tree->head; node; node = next) { + next = node->next; + action(node); + } +} diff --git a/src/splay_tree.h b/src/splay_tree.h new file mode 100644 index 00000000..e4af0c4f --- /dev/null +++ b/src/splay_tree.h @@ -0,0 +1,107 @@ +/* + splay_tree.h -- header file for splay_tree.c + Copyright (C) 2004-2006 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + + +#ifndef __SPLAY_TREE_H__ +#define __SPLAY_TREE_H__ + +typedef struct splay_node_t { + + /* Linked list part */ + + struct splay_node_t *next; + struct splay_node_t *prev; + + /* Tree part */ + + struct splay_node_t *parent; + struct splay_node_t *left; + struct splay_node_t *right; + + /* Payload */ + + void *data; + +} splay_node_t; + +typedef int (*splay_compare_t)(const void *, const void *); +typedef void (*splay_action_t)(const void *); +typedef void (*splay_action_node_t)(const splay_node_t *); + +typedef struct splay_tree_t { + + /* Linked list part */ + + splay_node_t *head; + splay_node_t *tail; + + /* Tree part */ + + splay_node_t *root; + + splay_compare_t compare; + splay_action_t delete; + +} splay_tree_t; + +/* (De)constructors */ + +extern splay_tree_t *splay_alloc_tree(splay_compare_t, splay_action_t); +extern void splay_free_tree(splay_tree_t *); + +extern splay_node_t *splay_alloc_node(void); +extern void splay_free_node(splay_tree_t *tree, splay_node_t *); + +/* Insertion and deletion */ + +extern splay_node_t *splay_insert(splay_tree_t *, void *); +extern splay_node_t *splay_insert_node(splay_tree_t *, splay_node_t *); + +extern void splay_insert_top(splay_tree_t *, splay_node_t *); +extern void splay_insert_before(splay_tree_t *, splay_node_t *, splay_node_t *); +extern void splay_insert_after(splay_tree_t *, splay_node_t *, splay_node_t *); + +extern splay_node_t *splay_unlink(splay_tree_t *, void *); +extern void splay_unlink_node(splay_tree_t *tree, splay_node_t *); +extern void splay_delete(splay_tree_t *, void *); +extern void splay_delete_node(splay_tree_t *, splay_node_t *); + +/* Fast tree cleanup */ + +extern void splay_delete_tree(splay_tree_t *); + +/* Searching */ + +extern void *splay_search(splay_tree_t *, const void *); +extern void *splay_search_closest(splay_tree_t *, const void *, int *); +extern void *splay_search_closest_smaller(splay_tree_t *, const void *); +extern void *splay_search_closest_greater(splay_tree_t *, const void *); + +extern splay_node_t *splay_search_node(splay_tree_t *, const void *); +extern splay_node_t *splay_search_closest_node(splay_tree_t *, const void *, int *); +extern splay_node_t *splay_search_closest_node_nosplay(const splay_tree_t *, const void *, int *); +extern splay_node_t *splay_search_closest_smaller_node(splay_tree_t *, const void *); +extern splay_node_t *splay_search_closest_greater_node(splay_tree_t *, const void *); + +/* Tree walking */ + +extern void splay_foreach(const splay_tree_t *, splay_action_t); +extern void splay_foreach_node(const splay_tree_t *, splay_action_t); + +#endif diff --git a/src/utils.c b/src/utils.c new file mode 100644 index 00000000..dd7e4de2 --- /dev/null +++ b/src/utils.c @@ -0,0 +1,76 @@ +/* + utils.c -- gathering of some stupid small functions + Copyright (C) 1999-2005 Ivo Timmermans + 2000-2009 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "system.h" + +#include "../src/logger.h" +#include "utils.h" + +const char hexadecimals[] = "0123456789ABCDEF"; + +int charhex2bin(char c) { + if(isdigit(c)) + return c - '0'; + else + return toupper(c) - 'A' + 10; +} + + +void hex2bin(char *src, char *dst, int length) { + int i; + for(i = 0; i < length; i++) + dst[i] = charhex2bin(src[i * 2]) * 16 + charhex2bin(src[i * 2 + 1]); +} + +void bin2hex(char *src, char *dst, int length) { + int i; + for(i = length - 1; i >= 0; i--) { + dst[i * 2 + 1] = hexadecimals[(unsigned char) src[i] & 15]; + dst[i * 2] = hexadecimals[(unsigned char) src[i] >> 4]; + } +} + +#if defined(HAVE_MINGW) || defined(HAVE_CYGWIN) +#ifdef HAVE_CYGWIN +#include +#endif + +const char *winerror(int err) { + static char buf[1024], *newline; + + if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, sizeof(buf), NULL)) { + strncpy(buf, "(unable to format errormessage)", sizeof(buf)); + }; + + if((newline = strchr(buf, '\r'))) + *newline = '\0'; + + return buf; +} +#endif + +unsigned int bitfield_to_int(void *bitfield, size_t size) { + unsigned int value = 0; + if(size > sizeof value) + size = sizeof value; + memcpy(&value, bitfield, size); + return value; +} diff --git a/src/utils.h b/src/utils.h new file mode 100644 index 00000000..fddb8a67 --- /dev/null +++ b/src/utils.h @@ -0,0 +1,47 @@ +/* + utils.h -- header file for utils.c + Copyright (C) 1999-2005 Ivo Timmermans + 2000-2009 Guus Sliepen + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#ifndef __TINC_UTILS_H__ +#define __TINC_UTILS_H__ + +extern void hex2bin(char *src, char *dst, int length); +extern void bin2hex(char *src, char *dst, int length); + +#ifdef HAVE_MINGW +extern const char *winerror(int); +#define strerror(x) ((x)>0?strerror(x):winerror(GetLastError())) +#define sockerrno WSAGetLastError() +#define sockstrerror(x) winerror(x) +#define sockwouldblock(x) ((x) == WSAEWOULDBLOCK || (x) == WSAEINTR) +#define sockmsgsize(x) ((x) == WSAEMSGSIZE) +#define sockinprogress(x) ((x) == WSAEINPROGRESS || (x) == WSAEWOULDBLOCK) +#define sockinuse(x) ((x) == WSAEADDRINUSE) +#else +#define sockerrno errno +#define sockstrerror(x) strerror(x) +#define sockwouldblock(x) ((x) == EWOULDBLOCK || (x) == EINTR) +#define sockmsgsize(x) ((x) == EMSGSIZE) +#define sockinprogress(x) ((x) == EINPROGRESS) +#define sockinuse(x) ((x) == EADDRINUSE) +#endif + +extern unsigned int bitfield_to_int(void *bitfield, size_t size); + +#endif /* __TINC_UTILS_H__ */ diff --git a/src/xalloc.h b/src/xalloc.h new file mode 100644 index 00000000..51f99bdf --- /dev/null +++ b/src/xalloc.h @@ -0,0 +1,29 @@ +#include + +#ifndef PARAMS +# if defined PROTOTYPES || (defined __STDC__ && __STDC__) +# define PARAMS(Args) Args +# else +# define PARAMS(Args) () +# endif +#endif + +/* Exit value when the requested amount of memory is not available. + The caller may set it to some other value. */ +extern int xalloc_exit_failure; + +/* FIXME: describe */ +extern char *const xalloc_msg_memory_exhausted; + +/* FIXME: describe */ +extern void (*xalloc_fail_func) (); + +void *xmalloc PARAMS ((size_t n)) __attribute__ ((__malloc__)); +void *xmalloc_and_zero PARAMS ((size_t n)) __attribute__ ((__malloc__)); +void *xcalloc PARAMS ((size_t n, size_t s)); +void *xrealloc PARAMS ((void *p, size_t n)) __attribute__ ((__malloc__)); + +char *xstrdup PARAMS ((const char *s)) __attribute__ ((__malloc__)); + +extern int xasprintf(char **strp, const char *fmt, ...); +extern int xvasprintf(char **strp, const char *fmt, va_list ap); diff --git a/src/xmalloc.c b/src/xmalloc.c new file mode 100644 index 00000000..4e79aff9 --- /dev/null +++ b/src/xmalloc.c @@ -0,0 +1,160 @@ +/* xmalloc.c -- malloc with out of memory checking + Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., Foundation, + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ + +#if HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include + +#if STDC_HEADERS +# include +#else +void *calloc (); +void *malloc (); +void *realloc (); +void free (); +#endif + +#include "dropin.h" +#include "xalloc.h" + +#ifndef EXIT_FAILURE +# define EXIT_FAILURE 1 +#endif + +/* Prototypes for functions defined here. */ +#if defined (__STDC__) && __STDC__ +void *xmalloc (size_t n); +void *xcalloc (size_t n, size_t s); +void *xrealloc (void *p, size_t n); +#endif + +/* Exit value when the requested amount of memory is not available. + The caller may set it to some other value. */ +int xalloc_exit_failure = EXIT_FAILURE; + +/* FIXME: describe */ +char *const xalloc_msg_memory_exhausted = "Memory exhausted"; + +/* FIXME: describe */ +void (*xalloc_fail_func) (int) = 0; + +static void +xalloc_fail (int size) +{ + if (xalloc_fail_func) + (*xalloc_fail_func) (size); + fprintf(stderr, "%s\n", xalloc_msg_memory_exhausted); + exit(xalloc_exit_failure); +} + +/* Allocate N bytes of memory dynamically, with error checking. */ + +void * +xmalloc (n) + size_t n; +{ + void *p; + + p = malloc (n); + if (p == 0) + xalloc_fail ((int)n); + return p; +} + +/* Allocate N bytes of memory dynamically, and set it all to zero. */ + +void * +xmalloc_and_zero (n) + size_t n; +{ + void *p; + + p = malloc (n); + if (p == 0) + xalloc_fail ((int)n); + memset (p, '\0', n); + return p; +} + +/* Change the size of an allocated block of memory P to N bytes, + with error checking. + If P is NULL, run xmalloc. */ + +void * +xrealloc (p, n) + void *p; + size_t n; +{ + p = realloc (p, n); + if (p == 0) + xalloc_fail (n); + return p; +} + +/* Duplicate a string */ + +char *xstrdup(const char *s) +{ + char *p; + + p = strdup(s); + if(!p) + xalloc_fail ((int)strlen(s)); + return p; +} + +#ifdef NOT_USED + +/* Allocate memory for N elements of S bytes, with error checking. */ + +void * +xcalloc (n, s) + size_t n, s; +{ + void *p; + + p = calloc (n, s); + if (p == 0) + xalloc_fail (); + return p; +} + +#endif /* NOT_USED */ + +int xasprintf(char **strp, const char *fmt, ...) { + int result; + va_list ap; + va_start(ap, fmt); + result = xvasprintf(strp, fmt, ap); + va_end(ap); + return result; +} + +int xvasprintf(char **strp, const char *fmt, va_list ap) { + int result = vasprintf(strp, fmt, ap); + if(result < 0) { + fprintf(stderr, "vasprintf() failed: %s\n", strerror(errno)); + exit(xalloc_exit_failure); + } + return result; +} diff --git a/system.h b/system.h index dfb4c6d7..5dc1dafc 100644 --- a/system.h +++ b/system.h @@ -37,7 +37,7 @@ typedef int bool; /* Other functions */ -#include "dropin.h" +#include "src/dropin.h" #ifndef HAVE_SOCKLEN_T typedef int socklen_t;