/*
netutl.c -- some supporting network utility code
- Copyright (C) 1998-2005 Ivo Timmermans
- 2000-2013 Guus Sliepen <guus@meshlink.io>
+ 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;
- 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(DEBUG_ALWAYS, LOG_WARNING, "Error looking up %s port %s: %s", address, service, err == EAI_SYSTEM ? strerror(errno) : 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};
- sockaddr_t result = {{0}};
+ struct addrinfo *ai;
+ sockaddr_t result;
int err;
- hint.ai_family = AF_UNSPEC;
- hint.ai_flags = AI_NUMERICHOST;
- hint.ai_socktype = SOCK_STREAM;
+ memset(&result, 0, sizeof(result));
+
+ struct addrinfo hint = {
+ .ai_family = AF_UNSPEC,
+ .ai_flags = AI_NUMERICHOST,
+ .ai_socktype = SOCK_STREAM,
+ };
err = getaddrinfo(address, port, &hint, &ai);
if(err || !ai) {
- logger(DEBUG_SCARY_THINGS, 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);
int err;
if(sa->sa.sa_family == AF_UNKNOWN) {
- if(addrstr)
+ if(addrstr) {
*addrstr = xstrdup(sa->unknown.address);
- if(portstr)
+ }
+
+ 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);
+ err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV);
if(err) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Error while translating addresses: %s", err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err));
+ 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. */
+ }
- if(addrstr)
+ if(addrstr) {
*addrstr = xstrdup(address);
- if(portstr)
+ }
+
+ if(portstr) {
*portstr = xstrdup(port);
+ }
}
char *sockaddr2hostname(const sockaddr_t *sa) {
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(DEBUG_ALWAYS, LOG_ERR, "Error while looking up hostname: %s", err == EAI_SYSTEM ? strerror(errno) : 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);
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(DEBUG_ALWAYS, LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!",
- a->sa.sa_family);
- abort();
+ default:
+ logger(NULL, MESHLINK_ERROR, "sockaddrcmp() was called with unknown address family %d, exitting!",
+ a->sa.sa_family);
+ abort();
}
}
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(DEBUG_ALWAYS, LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!",
- a->sa.sa_family);
- abort();
+ default:
+ logger(NULL, MESHLINK_ERROR, "sockaddrcmp() was called with unknown address family %d, exitting!",
+ a->sa.sa_family);
+ abort();
}
}
}
}
+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);
sa->in.sin_family = AF_INET;
}
}
+
+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;
+ }
+
+ 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;
+ }
+
+ default:
+ packmsg_output_invalidate(out);
+ break;
+ }
+}
+
+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 sa;
+}