2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2015 Hiroyuki Yamamoto and the Claws Mail team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "claws-features.h"
25 #if (defined (_XOPEN_SOURCE) && !defined (_BSD_SOURCE))
30 #include <glib/gi18n.h>
33 #include <sys/types.h>
35 # include <winsock2.h>
37 # define EINPROGRESS WSAEINPROGRESS
42 # include <sys/wait.h>
44 # include <sys/socket.h>
45 # include <sys/stat.h>
47 # include <netinet/in.h>
48 # include <arpa/inet.h>
51 #endif /* G_OS_WIN32 */
61 # include <sys/select.h>
72 #error USE_GIO is currently not supported
82 typedef gint (*SockAddrFunc) (GList *addr_list,
85 typedef struct _SockConnectData SockConnectData;
86 typedef struct _SockLookupData SockLookupData;
87 typedef struct _SockAddrData SockAddrData;
88 typedef struct _SockSource SockSource;
90 struct _SockConnectData {
96 SockLookupData *lookup_data;
101 gchar *canonical_name;
104 struct _SockLookupData {
113 gchar *canonical_name;
116 struct _SockAddrData {
121 struct sockaddr *addr;
129 static guint io_timeout = 60;
131 static GList *sock_connect_data_list = NULL;
133 static gboolean ssl_sock_prepare (GSource *source,
135 static gboolean ssl_sock_check (GSource *source);
136 static gboolean ssl_sock_dispatch (GSource *source,
137 GSourceFunc callback,
141 GSourceFuncs ssl_watch_funcs = {
149 static gint sock_connect_with_timeout (gint sock,
150 const struct sockaddr *serv_addr,
155 static gint sock_connect_by_hostname (gint sock,
156 const gchar *hostname,
159 static gint sock_connect_by_getaddrinfo (const gchar *hostname,
163 static SockInfo *sockinfo_from_fd(const gchar *hostname,
166 static void sock_address_list_free (GList *addr_list);
168 static gboolean sock_connect_async_cb (GIOChannel *source,
169 GIOCondition condition,
171 static gint sock_connect_async_get_address_info_cb
175 static gint sock_connect_address_list_async (SockConnectData *conn_data);
177 static gboolean sock_get_address_info_async_cb (GIOChannel *source,
178 GIOCondition condition,
180 static SockLookupData *sock_get_address_info_async
181 (const gchar *hostname,
185 static gint sock_get_address_info_async_cancel (SockLookupData *lookup_data);
194 result = WSAStartup(MAKEWORD(2, 2), &wsadata);
195 if (result != NO_ERROR) {
196 g_warning("WSAStartup() failed\n");
203 gint sock_cleanup(void)
211 gint sock_set_io_timeout(guint sec)
217 void refresh_resolvers(void)
220 static time_t resolv_conf_changed = (time_t)NULL;
223 /* This makes the glibc re-read resolv.conf, if it changed
224 * since our startup. Maybe that should be #ifdef'ed, I don't
225 * know if it'd work on BSDs.
226 * Why doesn't the glibc do it by itself?
228 if (stat("/etc/resolv.conf", &s) == 0) {
229 if (s.st_mtime > resolv_conf_changed) {
230 resolv_conf_changed = s.st_mtime;
234 we'll have bigger problems. */
239 #define SOCKET_IS_VALID(s) ((s) != INVALID_SOCKET)
241 #define SOCKET_IS_VALID(s) (s != -1)
244 /* Due to the fact that socket under Windows are not represented by
245 standard file descriptors, we sometimes need to check whether a
246 given file descriptor is actually a socket. This is done by
247 testing for an error. Returns true under W32 if FD is a socket. */
248 static int fd_is_w32_socket(gint fd)
252 gint retval = sizeof(optval);
254 return !getsockopt(fd, SOL_SOCKET, SO_TYPE, (char*)&optval, &retval);
260 gint fd_connect_inet(gushort port)
263 struct sockaddr_in addr;
265 sock = socket(AF_INET, SOCK_STREAM, 0);
266 if (!SOCKET_IS_VALID(sock)) {
268 debug_print("fd_connect_inet(): socket() failed: %d\n",
271 perror("fd_connect_inet(): socket");
276 memset(&addr, 0, sizeof(addr));
277 addr.sin_family = AF_INET;
278 addr.sin_port = htons(port);
279 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
281 if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
288 gint fd_open_inet(gushort port)
291 struct sockaddr_in addr;
294 sock = socket(AF_INET, SOCK_STREAM, 0);
295 if (!SOCKET_IS_VALID(sock)) {
297 g_warning("fd_open_inet(): socket() failed: %d\n",
300 perror("fd_open_inet(): socket");
306 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val,
308 perror("setsockopt");
313 memset(&addr, 0, sizeof(addr));
314 addr.sin_family = AF_INET;
315 addr.sin_port = htons(port);
316 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
318 if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
324 if (listen(sock, 1) < 0) {
333 gint fd_connect_unix(const gchar *path)
337 struct sockaddr_un addr;
339 sock = socket(PF_UNIX, SOCK_STREAM, 0);
341 perror("sock_connect_unix(): socket");
345 memset(&addr, 0, sizeof(addr));
346 addr.sun_family = AF_UNIX;
347 strncpy(addr.sun_path, path, sizeof(addr.sun_path) - 1);
349 if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
360 gint fd_open_unix(const gchar *path)
364 struct sockaddr_un addr;
366 sock = socket(PF_UNIX, SOCK_STREAM, 0);
369 perror("sock_open_unix(): socket");
373 memset(&addr, 0, sizeof(addr));
374 addr.sun_family = AF_UNIX;
375 strncpy(addr.sun_path, path, sizeof(addr.sun_path) - 1);
377 if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
378 gchar *buf = g_strdup_printf("can't bind to %s", path);
385 if (listen(sock, 1) < 0) {
386 gchar *buf = g_strdup_printf("can't listen on %s", path);
399 gint fd_accept(gint sock)
401 struct sockaddr_in caddr;
404 caddr_len = sizeof(caddr);
405 return accept(sock, (struct sockaddr *)&caddr, &caddr_len);
409 static gint set_nonblocking_mode(gint fd, gboolean nonblock)
414 flags = fcntl(fd, F_GETFL, 0);
423 flags &= ~O_NONBLOCK;
425 return fcntl(fd, F_SETFL, flags);
431 gint sock_set_nonblocking_mode(SockInfo *sock, gboolean nonblock)
433 cm_return_val_if_fail(sock != NULL, -1);
435 return set_nonblocking_mode(sock->sock, nonblock);
438 static gboolean is_nonblocking_mode(gint fd)
443 flags = fcntl(fd, F_GETFL, 0);
449 return ((flags & O_NONBLOCK) != 0);
455 gboolean sock_is_nonblocking_mode(SockInfo *sock)
457 cm_return_val_if_fail(sock != NULL, FALSE);
459 return is_nonblocking_mode(sock->sock);
464 static gboolean ssl_sock_prepare(GSource *source, gint *timeout)
470 static gboolean ssl_sock_check(GSource *source)
472 SockInfo *sock = ((SockSource *)source)->sock;
473 struct timeval timeout = {0, 0};
475 GIOCondition condition = 0;
477 if (!sock || !sock->sock)
480 condition = sock->condition;
482 if ((condition & G_IO_IN) == G_IO_IN &&
483 gnutls_record_check_pending(sock->ssl) != 0)
487 FD_SET(sock->sock, &fds);
489 select(sock->sock + 1,
490 (condition & G_IO_IN) ? &fds : NULL,
491 (condition & G_IO_OUT) ? &fds : NULL,
494 return FD_ISSET(sock->sock, &fds) != 0;
497 static gboolean ssl_sock_dispatch(GSource *source, GSourceFunc callback,
500 SockInfo *sock = ((SockSource *)source)->sock;
502 if (!sock || !sock->callback || !sock->data)
505 return sock->callback(sock, sock->condition, sock->data);
509 static gboolean sock_watch_cb(GIOChannel *source, GIOCondition condition,
512 SockInfo *sock = (SockInfo *)data;
514 if ((condition & sock->condition) == 0)
517 return sock->callback(sock, sock->condition, sock->data);
520 guint sock_add_watch(SockInfo *sock, GIOCondition condition, SockFunc func,
526 sock->callback = func;
527 sock->condition = condition;
533 GSource *source = g_source_new(&ssl_watch_funcs,
535 ((SockSource *) source)->sock = sock;
536 g_source_set_priority(source, G_PRIORITY_DEFAULT);
537 g_source_set_can_recurse(source, FALSE);
538 sock->g_source = g_source_attach(source, NULL);
539 g_source_unref (source); /* Refcount back down to 1 */
540 return sock->g_source;
544 return g_io_add_watch(sock->sock_ch, condition, sock_watch_cb, sock);
547 static gint fd_check_io(gint fd, GIOCondition cond)
549 struct timeval timeout;
552 if (is_nonblocking_mode(fd))
555 timeout.tv_sec = io_timeout;
561 if (cond == G_IO_IN) {
562 select(fd + 1, &fds, NULL, NULL,
563 io_timeout > 0 ? &timeout : NULL);
565 select(fd + 1, NULL, &fds, NULL,
566 io_timeout > 0 ? &timeout : NULL);
569 if (FD_ISSET(fd, &fds)) {
572 g_warning("Socket IO timeout\n");
573 log_error(LOG_PROTOCOL, _("Socket IO timeout.\n"));
579 static sigjmp_buf jmpenv;
581 static void timeout_handler(gint sig)
583 siglongjmp(jmpenv, 1);
587 static gint sock_connect_with_timeout(gint sock,
588 const struct sockaddr *serv_addr,
594 void (*prev_handler)(gint);
597 prev_handler = signal(SIGALRM, timeout_handler);
598 if (sigsetjmp(jmpenv, 1)) {
600 signal(SIGALRM, prev_handler);
602 log_error(LOG_PROTOCOL, _("Connection timed out.\n"));
608 ret = connect(sock, serv_addr, addrlen);
612 signal(SIGALRM, prev_handler);
618 struct hostent *my_gethostbyname(const gchar *hostname)
622 void (*prev_handler)(gint);
625 prev_handler = signal(SIGALRM, timeout_handler);
626 if (sigsetjmp(jmpenv, 1)) {
628 signal(SIGALRM, prev_handler);
629 g_printerr("%s: host lookup timed out.\n", hostname);
630 log_error(LOG_PROTOCOL, _("%s: host lookup timed out.\n"), hostname);
637 if ((hp = gethostbyname(hostname)) == NULL) {
640 signal(SIGALRM, prev_handler);
642 g_printerr("%s: unknown host.\n", hostname);
643 log_error(LOG_PROTOCOL, _("%s: unknown host.\n"), hostname);
650 signal(SIGALRM, prev_handler);
657 static gint my_inet_aton(const gchar *hostname, struct in_addr *inp)
660 return inet_aton(hostname, inp);
665 inaddr = inet_addr(hostname);
667 memcpy(inp, &inaddr, sizeof(inaddr));
674 #endif /* HAVE_INET_ATON */
677 static gint sock_connect_by_hostname(gint sock, const gchar *hostname,
681 struct sockaddr_in ad;
683 memset(&ad, 0, sizeof(ad));
684 ad.sin_family = AF_INET;
685 ad.sin_port = htons(port);
689 if (!my_inet_aton(hostname, &ad.sin_addr)) {
690 if ((hp = my_gethostbyname(hostname)) == NULL) {
691 g_printerr("%s: unknown host.\n", hostname);
696 if (hp->h_length != 4 && hp->h_length != 8) {
697 g_printerr("illegal address length received for host %s\n", hostname);
702 memcpy(&ad.sin_addr, hp->h_addr, hp->h_length);
705 return sock_connect_with_timeout(sock, (struct sockaddr *)&ad,
706 sizeof(ad), io_timeout);
710 static gint sock_connect_by_getaddrinfo(const gchar *hostname, gushort port)
712 gint sock = -1, gai_error;
713 struct addrinfo hints, *res, *ai;
718 memset(&hints, 0, sizeof(hints));
719 /* hints.ai_flags = AI_CANONNAME; */
720 hints.ai_family = AF_UNSPEC;
721 hints.ai_socktype = SOCK_STREAM;
722 hints.ai_protocol = IPPROTO_TCP;
724 /* convert port from integer to string. */
725 g_snprintf(port_str, sizeof(port_str), "%d", port);
727 if ((gai_error = getaddrinfo(hostname, port_str, &hints, &res)) != 0) {
728 g_printerr("getaddrinfo for %s:%s failed: %s\n",
729 hostname, port_str, gai_strerror(gai_error));
733 for (ai = res; ai != NULL; ai = ai->ai_next) {
734 sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
738 if (sock_connect_with_timeout
739 (sock, ai->ai_addr, ai->ai_addrlen, io_timeout) == 0)
755 SockInfo *sock_connect(const gchar *hostname, gushort port)
764 if ((sock = sock_connect_by_getaddrinfo(hostname, port)) < 0)
768 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {
769 g_warning("socket() failed: %d\n", WSAGetLastError());
771 if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
773 #endif /* G_OS_WIN32 */
777 if (sock_connect_by_hostname(sock, hostname, port) < 0) {
778 if (errno != 0) perror("connect");
784 return sockinfo_from_fd(hostname, port, sock);
788 static void sock_address_list_free(GList *addr_list)
792 for (cur = addr_list; cur != NULL; cur = cur->next) {
793 SockAddrData *addr_data = (SockAddrData *)cur->data;
794 g_free(addr_data->addr);
798 g_list_free(addr_list);
801 /* asynchronous TCP connection */
803 static gboolean sock_connect_async_cb(GIOChannel *source,
804 GIOCondition condition, gpointer data)
806 SockConnectData *conn_data = (SockConnectData *)data;
812 if (conn_data->io_tag == 0 && conn_data->channel == NULL)
815 fd = g_io_channel_unix_get_fd(source);
817 conn_data->io_tag = 0;
818 conn_data->channel = NULL;
819 g_io_channel_unref(source);
822 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &val, &len) < 0) {
823 perror("getsockopt");
825 sock_connect_address_list_async(conn_data);
831 log_error(LOG_PROTOCOL, _("%s:%d: connection failed (%s).\n"),
832 conn_data->hostname, conn_data->port,
834 sock_connect_address_list_async(conn_data);
838 sockinfo = g_new0(SockInfo, 1);
841 sockinfo->sock_ch = g_io_channel_unix_new(fd);
843 sockinfo->sock_ch = g_io_channel_win32_new_socket(fd);
845 sockinfo->hostname = g_strdup(conn_data->hostname);
846 sockinfo->port = conn_data->port;
847 sockinfo->state = CONN_ESTABLISHED;
848 sockinfo->canonical_name = g_strdup(conn_data->canonical_name);
850 conn_data->func(sockinfo, conn_data->data);
852 sock_connect_async_cancel(conn_data->id);
857 static gint sock_connect_async_get_address_info_cb(GList *addr_list,
860 SockConnectData *conn_data = (SockConnectData *)data;
862 conn_data->addr_list = addr_list;
863 conn_data->cur_addr = addr_list;
864 if (conn_data->lookup_data) {
865 conn_data->canonical_name = conn_data->lookup_data->canonical_name;
866 conn_data->lookup_data->canonical_name = NULL;
867 conn_data->lookup_data = NULL;
869 return sock_connect_address_list_async(conn_data);
872 gint sock_connect_async(const gchar *hostname, gushort port,
873 SockConnectFunc func, gpointer data)
876 SockConnectData *conn_data;
878 conn_data = g_new0(SockConnectData, 1);
879 conn_data->id = id++;
880 conn_data->hostname = g_strdup(hostname);
881 conn_data->port = port;
882 conn_data->addr_list = NULL;
883 conn_data->cur_addr = NULL;
884 conn_data->io_tag = 0;
885 conn_data->func = func;
886 conn_data->data = data;
888 conn_data->lookup_data = sock_get_address_info_async
889 (hostname, port, sock_connect_async_get_address_info_cb,
892 if (conn_data->lookup_data == NULL) {
893 g_free(conn_data->hostname);
898 sock_connect_data_list = g_list_append(sock_connect_data_list,
901 return conn_data->id;
904 gint sock_connect_async_cancel(gint id)
906 SockConnectData *conn_data = NULL;
909 for (cur = sock_connect_data_list; cur != NULL; cur = cur->next) {
910 if (((SockConnectData *)cur->data)->id == id) {
911 conn_data = (SockConnectData *)cur->data;
917 sock_connect_data_list = g_list_remove(sock_connect_data_list,
920 if (conn_data->lookup_data)
921 sock_get_address_info_async_cancel
922 (conn_data->lookup_data);
924 if (conn_data->io_tag > 0)
925 g_source_remove(conn_data->io_tag);
926 if (conn_data->channel) {
928 g_io_channel_shutdown(conn_data->channel, TRUE, &err);
931 g_io_channel_unref(conn_data->channel);
934 sock_address_list_free(conn_data->addr_list);
935 g_free(conn_data->canonical_name);
936 g_free(conn_data->hostname);
939 g_warning("sock_connect_async_cancel: id %d not found.\n", id);
946 static gint sock_connect_address_list_async(SockConnectData *conn_data)
948 SockAddrData *addr_data;
951 for (; conn_data->cur_addr != NULL;
952 conn_data->cur_addr = conn_data->cur_addr->next) {
953 addr_data = (SockAddrData *)conn_data->cur_addr->data;
955 if ((sock = socket(addr_data->family, addr_data->socktype,
956 addr_data->protocol)) < 0) {
962 set_nonblocking_mode(sock, TRUE);
964 if (connect(sock, addr_data->addr, addr_data->addr_len) < 0) {
965 if (EINPROGRESS == errno) {
976 if (conn_data->cur_addr == NULL) {
977 conn_data->func(NULL, conn_data->data);
978 sock_connect_async_cancel(conn_data->id);
982 conn_data->cur_addr = conn_data->cur_addr->next;
985 conn_data->channel = g_io_channel_unix_new(sock);
987 conn_data->channel = g_io_channel_win32_new_socket(sock);
989 conn_data->io_tag = g_io_add_watch(conn_data->channel, G_IO_IN|G_IO_OUT,
990 sock_connect_async_cb, conn_data);
995 /* asynchronous DNS lookup */
997 static gboolean sock_get_address_info_async_cb(GIOChannel *source,
998 GIOCondition condition,
1001 SockLookupData *lookup_data = (SockLookupData *)data;
1002 GList *addr_list = NULL;
1003 SockAddrData *addr_data;
1006 struct sockaddr *addr;
1007 gchar *canonical_name = NULL;
1011 g_io_channel_set_encoding(source, NULL, &err);
1013 g_warning("can unset encoding: %s\n", err->message);
1017 g_io_channel_set_buffered(source, FALSE);
1018 if (g_io_channel_read_chars(source, &len, sizeof(len),
1019 &bytes_read, &err) == G_IO_STATUS_NORMAL) {
1021 g_warning("g_io_channel_read_chars: %s\n", err->message);
1025 if (bytes_read == sizeof(len) && len > 0) {
1028 canonical_name = g_malloc0(len + 1);
1029 cur = canonical_name;
1031 if (g_io_channel_read_chars(source, cur, todo,
1032 &bytes_read, &err) != G_IO_STATUS_NORMAL) {
1034 g_warning("canonical name not read %s\n", err->message);
1035 g_free(canonical_name);
1036 canonical_name = NULL;
1045 if (bytes_read == 0) {
1046 g_warning("canonical name not read\n");
1047 g_free(canonical_name);
1048 canonical_name = NULL;
1055 if (g_io_channel_read_chars(source, (gchar *)ai_member,
1056 sizeof(ai_member), &bytes_read, &err)
1057 != G_IO_STATUS_NORMAL) {
1059 g_warning("g_io_channel_read_chars: addr len %s\n", err->message);
1066 if (bytes_read == 0 || bytes_read != sizeof(ai_member))
1069 if (ai_member[0] == AF_UNSPEC) {
1070 g_warning("DNS lookup failed\n");
1071 log_error(LOG_PROTOCOL, _("%s:%d: unknown host.\n"),
1072 lookup_data->hostname, lookup_data->port);
1076 addr = g_malloc(ai_member[3]);
1077 if (g_io_channel_read_chars(source, (gchar *)addr, ai_member[3],
1079 != G_IO_STATUS_NORMAL) {
1081 g_warning("g_io_channel_read_chars: addr data read %s\n", err->message);
1089 if (bytes_read != ai_member[3]) {
1090 g_warning("sock_get_address_info_async_cb: "
1091 "incomplete address data\n");
1096 addr_data = g_new0(SockAddrData, 1);
1097 addr_data->family = ai_member[0];
1098 addr_data->socktype = ai_member[1];
1099 addr_data->protocol = ai_member[2];
1100 addr_data->addr_len = ai_member[3];
1101 addr_data->addr = addr;
1103 addr_list = g_list_append(addr_list, addr_data);
1106 g_io_channel_shutdown(source, TRUE, &err);
1109 g_io_channel_unref(source);
1112 /* FIXME: We would need to cancel the thread. */
1114 kill(lookup_data->child_pid, SIGKILL);
1115 waitpid(lookup_data->child_pid, NULL, 0);
1117 lookup_data->canonical_name = canonical_name;
1119 lookup_data->func(addr_list, lookup_data->data);
1121 g_free(lookup_data->canonical_name);
1122 g_free(lookup_data->hostname);
1123 g_free(lookup_data);
1129 /* For better readability we use a separate function to implement the
1130 child code of sock_get_address_info_async. Note, that under W32
1131 this is actually not a child but a thread and this is the reason
1132 why we pass only a void pointer. */
1133 static void address_info_async_child(void *opaque)
1135 SockLookupData *parm = opaque;
1138 struct addrinfo hints, *res, *ai;
1142 gchar **addr_list_p;
1143 struct sockaddr_in ad;
1145 gint ai_member[4] = {AF_UNSPEC, 0, 0, 0};
1148 close(parm->pipe_fds[0]);
1149 parm->pipe_fds[0] = -1;
1153 memset(&hints, 0, sizeof(hints));
1154 hints.ai_flags = AI_CANONNAME;
1155 hints.ai_family = AF_UNSPEC;
1156 hints.ai_socktype = SOCK_STREAM;
1157 hints.ai_protocol = IPPROTO_TCP;
1159 g_snprintf(port_str, sizeof(port_str), "%d", parm->port);
1161 gai_err = getaddrinfo(parm->hostname, port_str, &hints, &res);
1164 g_warning("getaddrinfo for %s:%s failed: %s\n",
1165 parm->hostname, port_str, gai_strerror(gai_err));
1166 log_error(LOG_PROTOCOL, _("%s:%s: host lookup failed (%s).\n"),
1167 parm->hostname, port_str, gai_strerror(gai_err));
1168 fd_write_all(parm->pipe_fds[1], &len,
1170 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1172 close(parm->pipe_fds[1]);
1173 parm->pipe_fds[1] = -1;
1182 if (res->ai_canonname && strlen(res->ai_canonname) < 255) {
1183 gchar len = strlen(res->ai_canonname);
1184 fd_write_all(parm->pipe_fds[1], &len,
1186 fd_write_all(parm->pipe_fds[1], res->ai_canonname,
1190 fd_write_all(parm->pipe_fds[1], &len,
1195 fd_write_all(parm->pipe_fds[1], &len,
1199 for (ai = res; ai != NULL; ai = ai->ai_next) {
1200 ai_member[0] = ai->ai_family;
1201 ai_member[1] = ai->ai_socktype;
1202 ai_member[2] = ai->ai_protocol;
1203 ai_member[3] = ai->ai_addrlen;
1205 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1207 fd_write_all(parm->pipe_fds[1], (gchar *)ai->ai_addr,
1214 hp = my_gethostbyname(parm->hostname);
1215 if (hp == NULL || hp->h_addrtype != AF_INET) {
1217 fd_write_all(parm->pipe_fds[1], &len,
1219 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1221 close(parm->pipe_fds[1]);
1222 parm->pipe_fds[1] = -1;
1230 ai_member[0] = AF_INET;
1231 ai_member[1] = SOCK_STREAM;
1232 ai_member[2] = IPPROTO_TCP;
1233 ai_member[3] = sizeof(ad);
1235 memset(&ad, 0, sizeof(ad));
1236 ad.sin_family = AF_INET;
1237 ad.sin_port = htons(parm->port);
1239 if (hp->h_name && strlen(hp->h_name) < 255) {
1240 gchar len = strlen(hp->h_name);
1241 fd_write_all(parm->pipe_fds[1], &len,
1243 fd_write_all(parm->pipe_fds[1], hp->h_name,
1247 fd_write_all(parm->pipe_fds[1], &len,
1250 for (addr_list_p = hp->h_addr_list; *addr_list_p != NULL;
1252 memcpy(&ad.sin_addr, *addr_list_p, hp->h_length);
1253 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1255 fd_write_all(parm->pipe_fds[1], (gchar *)&ad, sizeof(ad));
1259 close(parm->pipe_fds[1]);
1260 parm->pipe_fds[1] = -1;
1269 static SockLookupData *sock_get_address_info_async(const gchar *hostname,
1274 SockLookupData *lookup_data = NULL;
1276 refresh_resolvers();
1278 lookup_data = g_new0(SockLookupData, 1);
1279 lookup_data->hostname = g_strdup(hostname);
1280 lookup_data->func = func;
1281 lookup_data->data = data;
1282 lookup_data->port = port;
1283 lookup_data->child_pid = (pid_t)(-1);
1284 lookup_data->pipe_fds[0] = -1;
1285 lookup_data->pipe_fds[1] = -1;
1287 if (pipe(lookup_data->pipe_fds) < 0) {
1290 g_free (lookup_data->hostname);
1291 g_free (lookup_data);
1296 if ((lookup_data->child_pid = fork()) < 0) {
1299 g_free (lookup_data->hostname);
1300 g_free (lookup_data);
1304 if (lookup_data->child_pid == 0) {
1305 /* Child process. */
1306 address_info_async_child (lookup_data);
1307 g_assert_not_reached ();
1309 /* Parent process. */
1310 close(lookup_data->pipe_fds[1]);
1311 lookup_data->pipe_fds[1] = -1;
1312 #endif /*!G_OS_WIN32 */
1315 lookup_data->channel = g_io_channel_unix_new(lookup_data->pipe_fds[0]);
1317 lookup_data->channel = g_io_channel_win32_new_fd(lookup_data->pipe_fds[0]);
1319 lookup_data->io_tag = g_io_add_watch(lookup_data->channel, G_IO_IN,
1320 sock_get_address_info_async_cb,
1323 lookup_data->child_pid = _beginthread(
1324 address_info_async_child, 0, lookup_data);
1330 static gint sock_get_address_info_async_cancel(SockLookupData *lookup_data)
1332 if (lookup_data->io_tag > 0)
1333 g_source_remove(lookup_data->io_tag);
1334 if (lookup_data->channel) {
1336 g_io_channel_shutdown(lookup_data->channel, TRUE, &err);
1340 g_io_channel_unref(lookup_data->channel);
1343 if (lookup_data->child_pid > 0) {
1345 /* FIXME: Need a way to cancel the thread. */
1347 kill(lookup_data->child_pid, SIGKILL);
1348 waitpid(lookup_data->child_pid, NULL, 0);
1352 g_free(lookup_data->canonical_name);
1353 g_free(lookup_data->hostname);
1354 g_free(lookup_data);
1360 static SockInfo *sockinfo_from_fd(const gchar *hostname,
1366 sockinfo = g_new0(SockInfo, 1);
1367 sockinfo->sock = sock;
1369 sockinfo->sock_ch = g_io_channel_unix_new(sock);
1371 sockinfo->sock_ch = g_io_channel_win32_new_socket(sock);
1373 sockinfo->hostname = g_strdup(hostname);
1374 sockinfo->port = port;
1375 sockinfo->state = CONN_ESTABLISHED;
1380 static gint fd_read(gint fd, gchar *buf, gint len)
1382 if (fd_check_io(fd, G_IO_IN) < 0)
1385 if (fd_is_w32_socket(fd))
1386 return recv(fd, buf, len, 0);
1387 return read(fd, buf, len);
1391 static gint ssl_read(gnutls_session_t ssl, gchar *buf, gint len)
1395 if (gnutls_record_check_pending(ssl) == 0) {
1396 if (fd_check_io(GPOINTER_TO_INT(gnutls_transport_get_ptr(ssl)), G_IO_IN) < 0)
1401 r = gnutls_record_recv(ssl, buf, len);
1406 case 0: /* closed connection */
1409 case GNUTLS_E_REHANDSHAKE:
1411 r = gnutls_handshake(ssl);
1412 } while (r == GNUTLS_E_AGAIN || r == GNUTLS_E_INTERRUPTED);
1413 break; /* re-receive */
1414 case GNUTLS_E_AGAIN:
1415 case GNUTLS_E_INTERRUPTED:
1420 debug_print("Unexpected SSL read result %d\n", r);
1429 gint sock_read(SockInfo *sock, gchar *buf, gint len)
1433 cm_return_val_if_fail(sock != NULL, -1);
1437 ret = ssl_read(sock->ssl, buf, len);
1440 ret = fd_read(sock->sock, buf, len);
1443 sock->state = CONN_DISCONNECTED;
1447 gint fd_write(gint fd, const gchar *buf, gint len)
1449 if (fd_check_io(fd, G_IO_OUT) < 0)
1452 if (fd_is_w32_socket (fd))
1453 return send(fd, buf, len, 0);
1454 return write(fd, buf, len);
1458 static gint ssl_write(gnutls_session_t ssl, const gchar *buf, gint len)
1462 if (fd_check_io(GPOINTER_TO_INT(gnutls_transport_get_ptr(ssl)), G_IO_OUT) < 0)
1465 ret = gnutls_record_send(ssl, buf, len);
1470 case GNUTLS_E_AGAIN:
1471 case GNUTLS_E_INTERRUPTED:
1481 gint sock_write(SockInfo *sock, const gchar *buf, gint len)
1485 cm_return_val_if_fail(sock != NULL, -1);
1489 ret = ssl_write(sock->ssl, buf, len);
1492 ret = fd_write(sock->sock, buf, len);
1495 sock->state = CONN_DISCONNECTED;
1499 gint fd_write_all(gint fd, const gchar *buf, gint len)
1504 if (fd_check_io(fd, G_IO_OUT) < 0)
1507 signal(SIGPIPE, SIG_IGN);
1509 if (fd_is_w32_socket(fd))
1510 n = send(fd, buf, len, 0);
1512 n = write(fd, buf, len);
1515 log_error(LOG_PROTOCOL, _("write on fd%d: %s\n"), fd, g_strerror(errno));
1527 static gint ssl_write_all(gnutls_session_t ssl, const gchar *buf, gint len)
1532 n = ssl_write(ssl, buf, len);
1544 gint sock_write_all(SockInfo *sock, const gchar *buf, gint len)
1548 cm_return_val_if_fail(sock != NULL, -1);
1552 ret = ssl_write_all(sock->ssl, buf, len);
1555 ret = fd_write_all(sock->sock, buf, len);
1558 sock->state = CONN_DISCONNECTED;
1562 static gint fd_recv(gint fd, gchar *buf, gint len, gint flags)
1564 if (fd_check_io(fd, G_IO_IN) < 0)
1567 return recv(fd, buf, len, flags);
1570 gint fd_gets(gint fd, gchar *buf, gint len)
1572 gchar *newline, *bp = buf;
1579 fd_check_io(fd, G_IO_IN);
1583 MSKB Article ID: Q147714
1584 Windows Sockets 2 Service Provider Interface Limitations
1585 Polling with recv(MSG_PEEK) to determine when a complete message
1587 Reason and Workaround not available.
1589 Single-byte send() and recv().
1590 Reason: Couple one-byte sends with Nagle disabled.
1591 Workaround: Send modest amounts and receive as much as possible.
1594 if (recv(fd, bp, 1, 0) <= 0)
1601 #else /*!G_OS_WIN32*/
1603 if ((n = fd_recv(fd, bp, len, MSG_PEEK)) <= 0)
1605 if ((newline = memchr(bp, '\n', n)) != NULL)
1606 n = newline - bp + 1;
1607 if ((n = fd_read(fd, bp, n)) < 0)
1611 } while (!newline && len);
1612 #endif /*!G_OS_WIN32*/
1618 gint sock_close(SockInfo *sock)
1626 g_io_channel_unref(sock->sock_ch);
1630 ssl_done_socket(sock);
1631 if (sock->g_source != 0 && g_main_context_find_source_by_id(NULL, sock->g_source) != NULL)
1632 g_source_remove(sock->g_source);
1636 shutdown(sock->sock, 1); /* complete transfer before close */
1637 ret = closesocket(sock->sock);
1639 ret = fd_close(sock->sock);
1642 g_free(sock->canonical_name);
1643 g_free(sock->hostname);
1649 gint fd_close(gint fd)