5dfc0918c3
GLib 2.16 was released more than 4 years ago. Let's remove some cruft from the glib_compat.h header, and avoid new cruft to it.
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
|
|
* Copyright (C) 2003-2011 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* 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 "config.h"
|
|
#include "resolver.h"
|
|
|
|
#ifndef G_OS_WIN32
|
|
#include <sys/socket.h>
|
|
#include <netdb.h>
|
|
#else /* G_OS_WIN32 */
|
|
#include <ws2tcpip.h>
|
|
#include <winsock.h>
|
|
#endif /* G_OS_WIN32 */
|
|
|
|
#include <string.h>
|
|
|
|
char *
|
|
sockaddr_to_string(const struct sockaddr *sa, size_t length, GError **error)
|
|
{
|
|
#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
|
|
const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *)sa;
|
|
struct sockaddr_in a4;
|
|
#endif
|
|
int ret;
|
|
char host[NI_MAXHOST], serv[NI_MAXSERV];
|
|
|
|
#if defined(HAVE_IPV6) && defined(IN6_IS_ADDR_V4MAPPED)
|
|
if (sa->sa_family == AF_INET6 &&
|
|
IN6_IS_ADDR_V4MAPPED(&a6->sin6_addr)) {
|
|
/* convert "::ffff:127.0.0.1" to "127.0.0.1" */
|
|
|
|
memset(&a4, 0, sizeof(a4));
|
|
a4.sin_family = AF_INET;
|
|
memcpy(&a4.sin_addr, ((const char *)&a6->sin6_addr) + 12,
|
|
sizeof(a4.sin_addr));
|
|
a4.sin_port = a6->sin6_port;
|
|
|
|
sa = (const struct sockaddr *)&a4;
|
|
length = sizeof(a4);
|
|
}
|
|
#endif
|
|
|
|
ret = getnameinfo(sa, length, host, sizeof(host), serv, sizeof(serv),
|
|
NI_NUMERICHOST|NI_NUMERICSERV);
|
|
if (ret != 0) {
|
|
g_set_error(error, g_quark_from_static_string("netdb"), ret,
|
|
"%s", gai_strerror(ret));
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef HAVE_UN
|
|
if (sa->sa_family == AF_UNIX)
|
|
/* "serv" contains corrupt information with unix
|
|
sockets */
|
|
return g_strdup(host);
|
|
#endif
|
|
|
|
#ifdef HAVE_IPV6
|
|
if (strchr(host, ':') != NULL)
|
|
return g_strconcat("[", host, "]:", serv, NULL);
|
|
#endif
|
|
|
|
return g_strconcat(host, ":", serv, NULL);
|
|
}
|
|
|
|
struct addrinfo *
|
|
resolve_host_port(const char *host_port, unsigned default_port,
|
|
int flags, int socktype,
|
|
GError **error_r)
|
|
{
|
|
char *p = g_strdup(host_port);
|
|
const char *host = p, *port = NULL;
|
|
|
|
if (host_port[0] == '[') {
|
|
/* IPv6 needs enclosing square braces, to
|
|
differentiate between IP colons and the port
|
|
separator */
|
|
|
|
char *q = strchr(p + 1, ']');
|
|
if (q != NULL && q[1] == ':' && q[2] != 0) {
|
|
*q = 0;
|
|
++host;
|
|
port = q + 2;
|
|
}
|
|
}
|
|
|
|
if (port == NULL) {
|
|
/* port is after the colon, but only if it's the only
|
|
colon (don't split IPv6 addresses) */
|
|
|
|
char *q = strchr(p, ':');
|
|
if (q != NULL && q[1] != 0 && strchr(q + 1, ':') == NULL) {
|
|
*q = 0;
|
|
port = q + 1;
|
|
}
|
|
}
|
|
|
|
char buffer[32];
|
|
if (port == NULL && default_port != 0) {
|
|
g_snprintf(buffer, sizeof(buffer), "%u", default_port);
|
|
port = buffer;
|
|
}
|
|
|
|
if ((flags & AI_PASSIVE) != 0 && strcmp(host, "*") == 0)
|
|
host = NULL;
|
|
|
|
const struct addrinfo hints = {
|
|
.ai_flags = flags,
|
|
.ai_family = AF_UNSPEC,
|
|
.ai_socktype = socktype,
|
|
};
|
|
|
|
struct addrinfo *ai;
|
|
int ret = getaddrinfo(host, port, &hints, &ai);
|
|
g_free(p);
|
|
if (ret != 0) {
|
|
g_set_error(error_r, resolver_quark(), ret,
|
|
"Failed to look up '%s': %s",
|
|
host_port, gai_strerror(ret));
|
|
return NULL;
|
|
}
|
|
|
|
return ai;
|
|
}
|