/*
netutl.c -- some supporting network utility code
- Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2014-2017 Guus Sliepen <guus@meshlink.io>
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
#include "utils.h"
#include "xalloc.h"
-bool hostnames = false;
-
/*
Turn a string into a struct addrinfo.
Return NULL on failure.
*/
struct addrinfo *str2addrinfo(const char *address, const char *service, int socktype) {
- struct addrinfo *ai, hint = {0};
+ struct addrinfo *ai;
int err;
- cp();
-
- hint.ai_family = addressfamily;
- hint.ai_socktype = socktype;
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_socktype = socktype,
+ };
err = getaddrinfo(address, service, &hint, &ai);
if(err) {
- logger(LOG_WARNING, _("Error looking up %s port %s: %s"), address,
- service, gai_strerror(err));
+ logger(NULL, MESHLINK_WARNING, "Error looking up %s port %s: %s", address, service, err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err));
return NULL;
}
}
sockaddr_t str2sockaddr(const char *address, const char *port) {
- struct addrinfo *ai, hint = {0};
+ struct addrinfo *ai;
sockaddr_t result;
int err;
- cp();
+ memset(&result, 0, sizeof(result));
- hint.ai_family = AF_UNSPEC;
- hint.ai_flags = AI_NUMERICHOST;
- hint.ai_socktype = SOCK_STREAM;
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_flags = AI_NUMERICHOST,
+ .ai_socktype = SOCK_STREAM,
+ };
err = getaddrinfo(address, port, &hint, &ai);
if(err || !ai) {
- ifdebug(SCARY_THINGS)
- logger(LOG_DEBUG, "Unknown type address %s port %s", address, port);
+ logger(NULL, MESHLINK_DEBUG, "Unknown type address %s port %s", address, port);
result.sa.sa_family = AF_UNKNOWN;
result.unknown.address = xstrdup(address);
result.unknown.port = xstrdup(port);
char *scopeid;
int err;
- cp();
-
if(sa->sa.sa_family == AF_UNKNOWN) {
- *addrstr = xstrdup(sa->unknown.address);
- *portstr = xstrdup(sa->unknown.port);
+ if(addrstr) {
+ *addrstr = xstrdup(sa->unknown.address);
+ }
+
+ if(portstr) {
+ *portstr = xstrdup(sa->unknown.port);
+ }
+
return;
}
err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV);
if(err) {
- logger(LOG_ERR, _("Error while translating addresses: %s"),
- gai_strerror(err));
- cp_trace();
- raise(SIGFPE);
- exit(0);
+ logger(NULL, MESHLINK_ERROR, "Error while translating addresses: %s", err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err));
+ abort();
}
scopeid = strchr(address, '%');
- if(scopeid)
- *scopeid = '\0'; /* Descope. */
+ if(scopeid) {
+ *scopeid = '\0'; /* Descope. */
+ }
- *addrstr = xstrdup(address);
- *portstr = xstrdup(port);
+ if(addrstr) {
+ *addrstr = xstrdup(address);
+ }
+
+ if(portstr) {
+ *portstr = xstrdup(port);
+ }
}
char *sockaddr2hostname(const sockaddr_t *sa) {
char port[NI_MAXSERV] = "unknown";
int err;
- cp();
-
if(sa->sa.sa_family == AF_UNKNOWN) {
- xasprintf(&str, _("%s port %s"), sa->unknown.address, sa->unknown.port);
+ xasprintf(&str, "%s port %s", sa->unknown.address, sa->unknown.port);
return str;
}
- err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port),
- hostnames ? 0 : (NI_NUMERICHOST | NI_NUMERICSERV));
+ err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV);
+
if(err) {
- logger(LOG_ERR, _("Error while looking up hostname: %s"),
- gai_strerror(err));
+ logger(NULL, MESHLINK_ERROR, "Error while looking up hostname: %s", err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err));
+ abort();
}
- xasprintf(&str, _("%s port %s"), address, port);
+ xasprintf(&str, "%s port %s", address, port);
return str;
}
int sockaddrcmp_noport(const sockaddr_t *a, const sockaddr_t *b) {
int result;
- cp();
-
result = a->sa.sa_family - b->sa.sa_family;
- if(result)
+ if(result) {
return result;
+ }
- switch (a->sa.sa_family) {
- case AF_UNSPEC:
- return 0;
+ switch(a->sa.sa_family) {
+ case AF_UNSPEC:
+ return 0;
- case AF_UNKNOWN:
- return strcmp(a->unknown.address, b->unknown.address);
+ case AF_UNKNOWN:
+ return strcmp(a->unknown.address, b->unknown.address);
- case AF_INET:
- return memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr));
+ case AF_INET:
+ return memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr));
- case AF_INET6:
- return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr));
+ case AF_INET6:
+ return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr));
- default:
- logger(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"),
- a->sa.sa_family);
- cp_trace();
- raise(SIGFPE);
- exit(0);
+ default:
+ logger(NULL, MESHLINK_ERROR, "sockaddrcmp() was called with unknown address family %d, exitting!",
+ a->sa.sa_family);
+ abort();
}
}
int sockaddrcmp(const sockaddr_t *a, const sockaddr_t *b) {
int result;
- cp();
-
result = a->sa.sa_family - b->sa.sa_family;
- if(result)
+ if(result) {
return result;
+ }
- switch (a->sa.sa_family) {
- case AF_UNSPEC:
- return 0;
+ switch(a->sa.sa_family) {
+ case AF_UNSPEC:
+ return 0;
- case AF_UNKNOWN:
- result = strcmp(a->unknown.address, b->unknown.address);
+ case AF_UNKNOWN:
+ result = strcmp(a->unknown.address, b->unknown.address);
- if(result)
- return result;
+ if(result) {
+ return result;
+ }
- return strcmp(a->unknown.port, b->unknown.port);
+ return strcmp(a->unknown.port, b->unknown.port);
- case AF_INET:
- result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr));
+ case AF_INET:
+ result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a)->in.sin_addr);
- if(result)
- return result;
+ if(result) {
+ return result;
+ }
- return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a->in.sin_port));
+ return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a)->in.sin_port);
- case AF_INET6:
- result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr));
+ case AF_INET6:
+ result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a)->in6.sin6_addr);
- if(result)
- return result;
+ if(result) {
+ return result;
+ }
- return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a->in6.sin6_port));
+ return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a)->in6.sin6_port);
- default:
- logger(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"),
- a->sa.sa_family);
- cp_trace();
- raise(SIGFPE);
- exit(0);
+ default:
+ logger(NULL, MESHLINK_ERROR, "sockaddrcmp() was called with unknown address family %d, exitting!",
+ a->sa.sa_family);
+ abort();
}
}
void sockaddrcpy(sockaddr_t *a, const sockaddr_t *b) {
- cp();
-
if(b->sa.sa_family != AF_UNKNOWN) {
*a = *b;
} else {
}
}
-void sockaddrfree(sockaddr_t *a) {
- cp();
+void sockaddrcpy_setport(sockaddr_t *a, const sockaddr_t *b, uint16_t port) {
+ sockaddrcpy(a, b);
+
+ switch(b->sa.sa_family) {
+ case AF_INET:
+ a->in.sin_port = htons(port);
+ break;
+
+ case AF_INET6:
+ a->in6.sin6_port = htons(port);
+ break;
+
+ default:
+ break;
+ }
+}
+void sockaddrfree(sockaddr_t *a) {
if(a->sa.sa_family == AF_UNKNOWN) {
free(a->unknown.address);
free(a->unknown.port);
}
}
-
-void sockaddrunmap(sockaddr_t *sa) {
- cp();
+void sockaddrunmap(sockaddr_t *sa) {
if(sa->sa.sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sa->in6.sin6_addr)) {
sa->in.sin_addr.s_addr = ((uint32_t *) & sa->in6.sin6_addr)[3];
sa->in.sin_family = AF_INET;
}
}
-/* Subnet mask handling */
-
-int maskcmp(const void *va, const void *vb, int masklen) {
- int i, m, result;
- const char *a = va;
- const char *b = vb;
-
- cp();
-
- for(m = masklen, i = 0; m >= 8; m -= 8, i++) {
- result = a[i] - b[i];
- if(result)
- return result;
+void packmsg_add_sockaddr(packmsg_output_t *out, const sockaddr_t *sa) {
+ switch(sa->sa.sa_family) {
+ case AF_INET: {
+ uint8_t buf[6];
+ memcpy(buf + 0, &sa->in.sin_port, 2);
+ memcpy(buf + 2, &sa->in.sin_addr, 4);
+ packmsg_add_ext(out, 4, buf, sizeof(buf));
+ break;
}
- if(m)
- return (a[i] & (0x100 - (1 << (8 - m)))) -
- (b[i] & (0x100 - (1 << (8 - m))));
-
- return 0;
-}
-
-void mask(void *va, int masklen, int len) {
- int i;
- char *a = va;
-
- cp();
-
- i = masklen / 8;
- masklen %= 8;
-
- if(masklen)
- a[i++] &= (0x100 - (1 << (8 - masklen)));
-
- for(; i < len; i++)
- a[i] = 0;
-}
-
-void maskcpy(void *va, const void *vb, int masklen, int len) {
- int i, m;
- char *a = va;
- const char *b = vb;
-
- cp();
-
- for(m = masklen, i = 0; m >= 8; m -= 8, i++)
- a[i] = b[i];
-
- if(m) {
- a[i] = b[i] & (0x100 - (1 << (8 - m)));
- i++;
+ case AF_INET6: {
+ uint8_t buf[18];
+ memcpy(buf + 0, &sa->in6.sin6_port, 2);
+ memcpy(buf + 2, &sa->in6.sin6_addr, 16);
+ packmsg_add_ext(out, 6, buf, sizeof(buf));
+ break;
}
- for(; i < len; i++)
- a[i] = 0;
+ default:
+ packmsg_output_invalidate(out);
+ break;
+ }
}
-bool maskcheck(const void *va, int masklen, int len) {
- int i;
- const char *a = va;
-
- cp();
-
- i = masklen / 8;
- masklen %= 8;
-
- if(masklen && a[i++] & (0xff >> masklen))
- return false;
-
- for(; i < len; i++)
- if(a[i] != 0)
- return false;
+sockaddr_t packmsg_get_sockaddr(packmsg_input_t *in) {
+ sockaddr_t sa = {0};
+
+ int8_t type;
+ const void *data;
+ uint32_t len = packmsg_get_ext_raw(in, &type, &data);
+
+ switch(type) {
+ case 4:
+ if(len != 6) {
+ packmsg_input_invalidate(in);
+ return sa;
+ }
+
+ sa.sa.sa_family = AF_INET;
+ memcpy(&sa.in.sin_port, (uint8_t *)data + 0, 2);
+ memcpy(&sa.in.sin_addr, (uint8_t *)data + 2, 4);
+ break;
+
+ case 6:
+ if(len != 18) {
+ packmsg_input_invalidate(in);
+ return sa;
+ }
+
+ sa.sa.sa_family = AF_INET6;
+ memcpy(&sa.in6.sin6_port, (uint8_t *)data + 0, 2);
+ memcpy(&sa.in6.sin6_addr, (uint8_t *)data + 2, 16);
+ break;
+
+ default:
+ packmsg_input_invalidate(in);
+ return sa;
+ }
- return true;
+ return sa;
}
projects / meshlink / blobdiff