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))
29 /* This can probably be handled better, e.g. define it in config.h. */
30 #define _WIN32_WINNT _WIN32_WINNT_WIN6
32 #include <glib/gi18n.h>
35 #include <sys/types.h>
37 # include <ws2tcpip.h>
39 # define EINPROGRESS WSAEINPROGRESS
44 # include <sys/wait.h>
46 # include <sys/socket.h>
47 # include <sys/stat.h>
49 # include <netinet/in.h>
50 # include <arpa/inet.h>
53 #endif /* G_OS_WIN32 */
63 # include <sys/select.h>
74 #error USE_GIO is currently not supported
84 typedef gint (*SockAddrFunc) (GList *addr_list,
87 typedef struct _SockConnectData SockConnectData;
88 typedef struct _SockLookupData SockLookupData;
89 typedef struct _SockAddrData SockAddrData;
90 typedef struct _SockSource SockSource;
92 struct _SockConnectData {
98 SockLookupData *lookup_data;
101 SockConnectFunc func;
103 gchar *canonical_name;
106 struct _SockLookupData {
115 gchar *canonical_name;
118 struct _SockAddrData {
123 struct sockaddr *addr;
131 static guint io_timeout = 60;
133 static GList *sock_connect_data_list = NULL;
135 static gboolean ssl_sock_prepare (GSource *source,
137 static gboolean ssl_sock_check (GSource *source);
138 static gboolean ssl_sock_dispatch (GSource *source,
139 GSourceFunc callback,
143 GSourceFuncs ssl_watch_funcs = {
151 static gint sock_connect_with_timeout (gint sock,
152 const struct sockaddr *serv_addr,
156 static gint sock_connect_by_getaddrinfo (const gchar *hostname,
159 static SockInfo *sockinfo_from_fd(const gchar *hostname,
162 static void sock_address_list_free (GList *addr_list);
164 static gboolean sock_connect_async_cb (GIOChannel *source,
165 GIOCondition condition,
167 static gint sock_connect_async_get_address_info_cb
171 static gint sock_connect_address_list_async (SockConnectData *conn_data);
173 static gboolean sock_get_address_info_async_cb (GIOChannel *source,
174 GIOCondition condition,
176 static SockLookupData *sock_get_address_info_async
177 (const gchar *hostname,
181 static gint sock_get_address_info_async_cancel (SockLookupData *lookup_data);
190 result = WSAStartup(MAKEWORD(2, 2), &wsadata);
191 if (result != NO_ERROR) {
192 g_warning("WSAStartup() failed");
199 gint sock_cleanup(void)
207 gint sock_set_io_timeout(guint sec)
213 void refresh_resolvers(void)
216 static time_t resolv_conf_changed = (time_t)NULL;
219 /* This makes the glibc re-read resolv.conf, if it changed
220 * since our startup. Maybe that should be #ifdef'ed, I don't
221 * know if it'd work on BSDs.
222 * Why doesn't the glibc do it by itself?
224 if (g_stat("/etc/resolv.conf", &s) == 0) {
225 if (s.st_mtime > resolv_conf_changed) {
226 resolv_conf_changed = s.st_mtime;
230 we'll have bigger problems. */
235 #define SOCKET_IS_VALID(s) ((s) != INVALID_SOCKET)
237 #define SOCKET_IS_VALID(s) (s != -1)
240 /* Due to the fact that socket under Windows are not represented by
241 standard file descriptors, we sometimes need to check whether a
242 given file descriptor is actually a socket. This is done by
243 testing for an error. Returns true under W32 if FD is a socket. */
244 static int fd_is_w32_socket(gint fd)
248 gint retval = sizeof(optval);
250 return !getsockopt(fd, SOL_SOCKET, SO_TYPE, (char*)&optval, &retval);
256 gint fd_connect_inet(gushort port)
259 struct sockaddr_in addr;
261 sock = socket(AF_INET, SOCK_STREAM, 0);
262 if (!SOCKET_IS_VALID(sock)) {
264 debug_print("fd_connect_inet(): socket() failed: %d\n",
267 perror("fd_connect_inet(): socket");
272 memset(&addr, 0, sizeof(addr));
273 addr.sin_family = AF_INET;
274 addr.sin_port = htons(port);
275 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
277 if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
284 gint fd_open_inet(gushort port)
287 struct sockaddr_in addr;
290 sock = socket(AF_INET, SOCK_STREAM, 0);
291 if (!SOCKET_IS_VALID(sock)) {
293 g_warning("fd_open_inet(): socket() failed: %d",
296 perror("fd_open_inet(): socket");
302 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val,
304 perror("setsockopt");
309 memset(&addr, 0, sizeof(addr));
310 addr.sin_family = AF_INET;
311 addr.sin_port = htons(port);
312 addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
314 if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
320 if (listen(sock, 1) < 0) {
329 gint fd_connect_unix(const gchar *path)
333 struct sockaddr_un addr;
335 sock = socket(PF_UNIX, SOCK_STREAM, 0);
337 perror("sock_connect_unix(): socket");
341 memset(&addr, 0, sizeof(addr));
342 addr.sun_family = AF_UNIX;
343 strncpy(addr.sun_path, path, sizeof(addr.sun_path) - 1);
345 if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
356 gint fd_open_unix(const gchar *path)
360 struct sockaddr_un addr;
362 sock = socket(PF_UNIX, SOCK_STREAM, 0);
365 perror("sock_open_unix(): socket");
369 memset(&addr, 0, sizeof(addr));
370 addr.sun_family = AF_UNIX;
371 strncpy(addr.sun_path, path, sizeof(addr.sun_path) - 1);
373 if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
374 gchar *buf = g_strdup_printf("can't bind to %s", path);
381 if (listen(sock, 1) < 0) {
382 gchar *buf = g_strdup_printf("can't listen on %s", path);
395 gint fd_accept(gint sock)
397 struct sockaddr_in caddr;
400 caddr_len = sizeof(caddr);
401 return accept(sock, (struct sockaddr *)&caddr, &caddr_len);
405 static gint set_nonblocking_mode(gint fd, gboolean nonblock)
410 flags = fcntl(fd, F_GETFL, 0);
419 flags &= ~O_NONBLOCK;
421 return fcntl(fd, F_SETFL, flags);
427 gint sock_set_nonblocking_mode(SockInfo *sock, gboolean nonblock)
429 cm_return_val_if_fail(sock != NULL, -1);
431 return set_nonblocking_mode(sock->sock, nonblock);
434 static gboolean is_nonblocking_mode(gint fd)
439 flags = fcntl(fd, F_GETFL, 0);
445 return ((flags & O_NONBLOCK) != 0);
451 gboolean sock_is_nonblocking_mode(SockInfo *sock)
453 cm_return_val_if_fail(sock != NULL, FALSE);
455 return is_nonblocking_mode(sock->sock);
460 static gboolean ssl_sock_prepare(GSource *source, gint *timeout)
466 static gboolean ssl_sock_check(GSource *source)
468 SockInfo *sock = ((SockSource *)source)->sock;
469 struct timeval timeout = {0, 0};
471 GIOCondition condition = 0;
473 if (!sock || !sock->sock)
476 condition = sock->condition;
478 if ((condition & G_IO_IN) == G_IO_IN &&
479 gnutls_record_check_pending(sock->ssl) != 0)
483 FD_SET(sock->sock, &fds);
485 select(sock->sock + 1,
486 (condition & G_IO_IN) ? &fds : NULL,
487 (condition & G_IO_OUT) ? &fds : NULL,
490 return FD_ISSET(sock->sock, &fds) != 0;
493 static gboolean ssl_sock_dispatch(GSource *source, GSourceFunc callback,
496 SockInfo *sock = ((SockSource *)source)->sock;
498 if (!sock || !sock->callback || !sock->data)
501 return sock->callback(sock, sock->condition, sock->data);
505 static gboolean sock_watch_cb(GIOChannel *source, GIOCondition condition,
508 SockInfo *sock = (SockInfo *)data;
510 if ((condition & sock->condition) == 0)
513 return sock->callback(sock, sock->condition, sock->data);
516 guint sock_add_watch(SockInfo *sock, GIOCondition condition, SockFunc func,
522 sock->callback = func;
523 sock->condition = condition;
529 GSource *source = g_source_new(&ssl_watch_funcs,
531 ((SockSource *) source)->sock = sock;
532 g_source_set_priority(source, G_PRIORITY_DEFAULT);
533 g_source_set_can_recurse(source, FALSE);
534 sock->g_source = g_source_attach(source, NULL);
535 g_source_unref (source); /* Refcount back down to 1 */
536 return sock->g_source;
540 return g_io_add_watch(sock->sock_ch, condition, sock_watch_cb, sock);
543 static gint fd_check_io(gint fd, GIOCondition cond)
545 struct timeval timeout;
548 if (is_nonblocking_mode(fd))
551 timeout.tv_sec = io_timeout;
557 if (cond == G_IO_IN) {
558 select(fd + 1, &fds, NULL, NULL,
559 io_timeout > 0 ? &timeout : NULL);
561 select(fd + 1, NULL, &fds, NULL,
562 io_timeout > 0 ? &timeout : NULL);
565 if (FD_ISSET(fd, &fds)) {
568 g_warning("Socket IO timeout");
569 log_error(LOG_PROTOCOL, _("Socket IO timeout.\n"));
575 static sigjmp_buf jmpenv;
577 static void timeout_handler(gint sig)
579 siglongjmp(jmpenv, 1);
583 static gint sock_connect_with_timeout(gint sock,
584 const struct sockaddr *serv_addr,
590 void (*prev_handler)(gint);
593 prev_handler = signal(SIGALRM, timeout_handler);
594 if (sigsetjmp(jmpenv, 1)) {
596 signal(SIGALRM, prev_handler);
598 log_error(LOG_PROTOCOL, _("Connection timed out.\n"));
604 ret = connect(sock, serv_addr, addrlen);
608 signal(SIGALRM, prev_handler);
614 static gint sock_connect_by_getaddrinfo(const gchar *hostname, gushort port)
616 gint sock = -1, gai_error;
617 struct addrinfo hints, *res, *ai;
622 memset(&hints, 0, sizeof(hints));
623 hints.ai_flags = AI_ADDRCONFIG;
626 hints.ai_family = AF_UNSPEC;
628 hints.ai_family = AF_INET;
631 hints.ai_socktype = SOCK_STREAM;
632 hints.ai_protocol = IPPROTO_TCP;
634 /* convert port from integer to string. */
635 g_snprintf(port_str, sizeof(port_str), "%d", port);
637 if ((gai_error = getaddrinfo(hostname, port_str, &hints, &res)) != 0) {
638 g_printerr("getaddrinfo for %s:%s failed: %s\n",
639 hostname, port_str, gai_strerror(gai_error));
643 for (ai = res; ai != NULL; ai = ai->ai_next) {
645 if (ai->ai_family == AF_INET6)
649 sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
653 if (sock == INVALID_SOCKET)
657 if (sock_connect_with_timeout
658 (sock, ai->ai_addr, ai->ai_addrlen, io_timeout) == 0)
673 SockInfo *sock_connect(const gchar *hostname, gushort port)
681 if ((sock = sock_connect_by_getaddrinfo(hostname, port)) < 0) {
685 return sockinfo_from_fd(hostname, port, sock);
689 static void sock_address_list_free(GList *addr_list)
693 for (cur = addr_list; cur != NULL; cur = cur->next) {
694 SockAddrData *addr_data = (SockAddrData *)cur->data;
695 g_free(addr_data->addr);
699 g_list_free(addr_list);
702 /* asynchronous TCP connection */
704 static gboolean sock_connect_async_cb(GIOChannel *source,
705 GIOCondition condition, gpointer data)
707 SockConnectData *conn_data = (SockConnectData *)data;
713 if (conn_data->io_tag == 0 && conn_data->channel == NULL)
716 fd = g_io_channel_unix_get_fd(source);
718 conn_data->io_tag = 0;
719 conn_data->channel = NULL;
720 g_io_channel_unref(source);
723 if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &val, &len) < 0) {
724 perror("getsockopt");
726 sock_connect_address_list_async(conn_data);
732 log_error(LOG_PROTOCOL, _("%s:%d: connection failed (%s).\n"),
733 conn_data->hostname, conn_data->port,
735 sock_connect_address_list_async(conn_data);
739 sockinfo = g_new0(SockInfo, 1);
742 sockinfo->sock_ch = g_io_channel_unix_new(fd);
744 sockinfo->sock_ch = g_io_channel_win32_new_socket(fd);
746 sockinfo->hostname = g_strdup(conn_data->hostname);
747 sockinfo->port = conn_data->port;
748 sockinfo->state = CONN_ESTABLISHED;
749 sockinfo->canonical_name = g_strdup(conn_data->canonical_name);
751 conn_data->func(sockinfo, conn_data->data);
753 sock_connect_async_cancel(conn_data->id);
758 static gint sock_connect_async_get_address_info_cb(GList *addr_list,
761 SockConnectData *conn_data = (SockConnectData *)data;
763 conn_data->addr_list = addr_list;
764 conn_data->cur_addr = addr_list;
765 if (conn_data->lookup_data) {
766 conn_data->canonical_name = conn_data->lookup_data->canonical_name;
767 conn_data->lookup_data->canonical_name = NULL;
768 conn_data->lookup_data = NULL;
770 return sock_connect_address_list_async(conn_data);
773 gint sock_connect_async(const gchar *hostname, gushort port,
774 SockConnectFunc func, gpointer data)
777 SockConnectData *conn_data;
779 conn_data = g_new0(SockConnectData, 1);
780 conn_data->id = id++;
781 conn_data->hostname = g_strdup(hostname);
782 conn_data->port = port;
783 conn_data->addr_list = NULL;
784 conn_data->cur_addr = NULL;
785 conn_data->io_tag = 0;
786 conn_data->func = func;
787 conn_data->data = data;
789 conn_data->lookup_data = sock_get_address_info_async
790 (hostname, port, sock_connect_async_get_address_info_cb,
793 if (conn_data->lookup_data == NULL) {
794 g_free(conn_data->hostname);
799 sock_connect_data_list = g_list_append(sock_connect_data_list,
802 return conn_data->id;
805 gint sock_connect_async_cancel(gint id)
807 SockConnectData *conn_data = NULL;
810 for (cur = sock_connect_data_list; cur != NULL; cur = cur->next) {
811 if (((SockConnectData *)cur->data)->id == id) {
812 conn_data = (SockConnectData *)cur->data;
818 sock_connect_data_list = g_list_remove(sock_connect_data_list,
821 if (conn_data->lookup_data)
822 sock_get_address_info_async_cancel
823 (conn_data->lookup_data);
825 if (conn_data->io_tag > 0)
826 g_source_remove(conn_data->io_tag);
827 if (conn_data->channel) {
829 g_io_channel_shutdown(conn_data->channel, TRUE, &err);
832 g_io_channel_unref(conn_data->channel);
835 sock_address_list_free(conn_data->addr_list);
836 g_free(conn_data->canonical_name);
837 g_free(conn_data->hostname);
840 g_warning("sock_connect_async_cancel: id %d not found", id);
847 static gint sock_connect_address_list_async(SockConnectData *conn_data)
849 SockAddrData *addr_data;
852 for (; conn_data->cur_addr != NULL;
853 conn_data->cur_addr = conn_data->cur_addr->next) {
854 addr_data = (SockAddrData *)conn_data->cur_addr->data;
856 if ((sock = socket(addr_data->family, addr_data->socktype,
857 addr_data->protocol)) < 0) {
863 set_nonblocking_mode(sock, TRUE);
865 if (connect(sock, addr_data->addr, addr_data->addr_len) < 0) {
866 if (EINPROGRESS == errno) {
877 if (conn_data->cur_addr == NULL) {
878 conn_data->func(NULL, conn_data->data);
879 sock_connect_async_cancel(conn_data->id);
883 conn_data->cur_addr = conn_data->cur_addr->next;
886 conn_data->channel = g_io_channel_unix_new(sock);
888 conn_data->channel = g_io_channel_win32_new_socket(sock);
890 conn_data->io_tag = g_io_add_watch(conn_data->channel, G_IO_IN|G_IO_OUT,
891 sock_connect_async_cb, conn_data);
896 /* asynchronous DNS lookup */
898 static gboolean sock_get_address_info_async_cb(GIOChannel *source,
899 GIOCondition condition,
902 SockLookupData *lookup_data = (SockLookupData *)data;
903 GList *addr_list = NULL;
904 SockAddrData *addr_data;
907 struct sockaddr *addr;
908 gchar *canonical_name = NULL;
912 g_io_channel_set_encoding(source, NULL, &err);
914 g_warning("can unset encoding: %s", err->message);
918 g_io_channel_set_buffered(source, FALSE);
919 if (g_io_channel_read_chars(source, &len, sizeof(len),
920 &bytes_read, &err) == G_IO_STATUS_NORMAL) {
922 g_warning("g_io_channel_read_chars: %s", err->message);
926 if (bytes_read == sizeof(len) && len > 0) {
929 canonical_name = g_malloc0(len + 1);
930 cur = canonical_name;
932 if (g_io_channel_read_chars(source, cur, todo,
933 &bytes_read, &err) != G_IO_STATUS_NORMAL) {
935 g_warning("canonical name not read %s", err->message);
936 g_free(canonical_name);
937 canonical_name = NULL;
946 if (bytes_read == 0) {
947 g_warning("canonical name not read");
948 g_free(canonical_name);
949 canonical_name = NULL;
956 if (g_io_channel_read_chars(source, (gchar *)ai_member,
957 sizeof(ai_member), &bytes_read, &err)
958 != G_IO_STATUS_NORMAL) {
960 g_warning("g_io_channel_read_chars: addr len %s", err->message);
967 if (bytes_read == 0 || bytes_read != sizeof(ai_member))
970 if (ai_member[0] == AF_UNSPEC) {
971 g_warning("DNS lookup failed");
972 log_error(LOG_PROTOCOL, _("%s:%d: unknown host.\n"),
973 lookup_data->hostname, lookup_data->port);
977 addr = g_malloc(ai_member[3]);
978 if (g_io_channel_read_chars(source, (gchar *)addr, ai_member[3],
980 != G_IO_STATUS_NORMAL) {
982 g_warning("g_io_channel_read_chars: addr data read %s", err->message);
990 if (bytes_read != ai_member[3]) {
991 g_warning("sock_get_address_info_async_cb: "
992 "incomplete address data");
997 addr_data = g_new0(SockAddrData, 1);
998 addr_data->family = ai_member[0];
999 addr_data->socktype = ai_member[1];
1000 addr_data->protocol = ai_member[2];
1001 addr_data->addr_len = ai_member[3];
1002 addr_data->addr = addr;
1004 addr_list = g_list_append(addr_list, addr_data);
1007 g_io_channel_shutdown(source, TRUE, &err);
1010 g_io_channel_unref(source);
1013 /* FIXME: We would need to cancel the thread. */
1015 kill(lookup_data->child_pid, SIGKILL);
1016 waitpid(lookup_data->child_pid, NULL, 0);
1018 lookup_data->canonical_name = canonical_name;
1020 lookup_data->func(addr_list, lookup_data->data);
1022 g_free(lookup_data->canonical_name);
1023 g_free(lookup_data->hostname);
1024 g_free(lookup_data);
1030 /* For better readability we use a separate function to implement the
1031 child code of sock_get_address_info_async. Note, that under W32
1032 this is actually not a child but a thread and this is the reason
1033 why we pass only a void pointer. */
1034 static void address_info_async_child(void *opaque)
1036 SockLookupData *parm = opaque;
1038 struct addrinfo hints, *res, *ai;
1040 gint ai_member[4] = {AF_UNSPEC, 0, 0, 0};
1043 close(parm->pipe_fds[0]);
1044 parm->pipe_fds[0] = -1;
1047 memset(&hints, 0, sizeof(hints));
1048 hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
1050 hints.ai_family = AF_UNSPEC;
1052 hints.ai_family = AF_INET;
1054 hints.ai_socktype = SOCK_STREAM;
1055 hints.ai_protocol = IPPROTO_TCP;
1057 g_snprintf(port_str, sizeof(port_str), "%d", parm->port);
1059 gai_err = getaddrinfo(parm->hostname, port_str, &hints, &res);
1062 g_warning("getaddrinfo for %s:%s failed: %s",
1063 parm->hostname, port_str, gai_strerror(gai_err));
1064 log_error(LOG_PROTOCOL, _("%s:%s: host lookup failed (%s).\n"),
1065 parm->hostname, port_str, gai_strerror(gai_err));
1066 fd_write_all(parm->pipe_fds[1], &len,
1068 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1070 close(parm->pipe_fds[1]);
1071 parm->pipe_fds[1] = -1;
1080 if (res->ai_canonname && strlen(res->ai_canonname) < 255) {
1081 gchar len = strlen(res->ai_canonname);
1082 fd_write_all(parm->pipe_fds[1], &len,
1084 fd_write_all(parm->pipe_fds[1], res->ai_canonname,
1088 fd_write_all(parm->pipe_fds[1], &len,
1093 fd_write_all(parm->pipe_fds[1], &len,
1097 for (ai = res; ai != NULL; ai = ai->ai_next) {
1098 ai_member[0] = ai->ai_family;
1099 ai_member[1] = ai->ai_socktype;
1100 ai_member[2] = ai->ai_protocol;
1101 ai_member[3] = ai->ai_addrlen;
1103 fd_write_all(parm->pipe_fds[1], (gchar *)ai_member,
1105 fd_write_all(parm->pipe_fds[1], (gchar *)ai->ai_addr,
1112 close(parm->pipe_fds[1]);
1113 parm->pipe_fds[1] = -1;
1122 static SockLookupData *sock_get_address_info_async(const gchar *hostname,
1127 SockLookupData *lookup_data = NULL;
1129 refresh_resolvers();
1131 lookup_data = g_new0(SockLookupData, 1);
1132 lookup_data->hostname = g_strdup(hostname);
1133 lookup_data->func = func;
1134 lookup_data->data = data;
1135 lookup_data->port = port;
1136 lookup_data->child_pid = (pid_t)(-1);
1137 lookup_data->pipe_fds[0] = -1;
1138 lookup_data->pipe_fds[1] = -1;
1140 if (pipe(lookup_data->pipe_fds) < 0) {
1143 g_free (lookup_data->hostname);
1144 g_free (lookup_data);
1149 if ((lookup_data->child_pid = fork()) < 0) {
1152 g_free (lookup_data->hostname);
1153 g_free (lookup_data);
1157 if (lookup_data->child_pid == 0) {
1158 /* Child process. */
1159 address_info_async_child (lookup_data);
1160 g_assert_not_reached ();
1162 /* Parent process. */
1163 close(lookup_data->pipe_fds[1]);
1164 lookup_data->pipe_fds[1] = -1;
1165 #endif /*!G_OS_WIN32 */
1168 lookup_data->channel = g_io_channel_unix_new(lookup_data->pipe_fds[0]);
1170 lookup_data->channel = g_io_channel_win32_new_fd(lookup_data->pipe_fds[0]);
1172 lookup_data->io_tag = g_io_add_watch(lookup_data->channel, G_IO_IN,
1173 sock_get_address_info_async_cb,
1176 lookup_data->child_pid = _beginthread(
1177 address_info_async_child, 0, lookup_data);
1183 static gint sock_get_address_info_async_cancel(SockLookupData *lookup_data)
1185 if (lookup_data->io_tag > 0)
1186 g_source_remove(lookup_data->io_tag);
1187 if (lookup_data->channel) {
1189 g_io_channel_shutdown(lookup_data->channel, TRUE, &err);
1193 g_io_channel_unref(lookup_data->channel);
1196 if (lookup_data->child_pid > 0) {
1198 /* FIXME: Need a way to cancel the thread. */
1200 kill(lookup_data->child_pid, SIGKILL);
1201 waitpid(lookup_data->child_pid, NULL, 0);
1205 g_free(lookup_data->canonical_name);
1206 g_free(lookup_data->hostname);
1207 g_free(lookup_data);
1213 static SockInfo *sockinfo_from_fd(const gchar *hostname,
1219 sockinfo = g_new0(SockInfo, 1);
1220 sockinfo->sock = sock;
1222 sockinfo->sock_ch = g_io_channel_unix_new(sock);
1224 sockinfo->sock_ch = g_io_channel_win32_new_socket(sock);
1226 sockinfo->hostname = g_strdup(hostname);
1227 sockinfo->port = port;
1228 sockinfo->state = CONN_ESTABLISHED;
1233 static gint fd_read(gint fd, gchar *buf, gint len)
1235 if (fd_check_io(fd, G_IO_IN) < 0)
1238 if (fd_is_w32_socket(fd))
1239 return recv(fd, buf, len, 0);
1240 return read(fd, buf, len);
1244 static gint ssl_read(gnutls_session_t ssl, gchar *buf, gint len)
1248 if (gnutls_record_check_pending(ssl) == 0) {
1249 if (fd_check_io(GPOINTER_TO_INT(gnutls_transport_get_ptr(ssl)), G_IO_IN) < 0)
1254 r = gnutls_record_recv(ssl, buf, len);
1259 case 0: /* closed connection */
1262 case GNUTLS_E_REHANDSHAKE:
1264 r = gnutls_handshake(ssl);
1265 } while (r == GNUTLS_E_AGAIN || r == GNUTLS_E_INTERRUPTED);
1266 break; /* re-receive */
1267 case GNUTLS_E_AGAIN:
1268 case GNUTLS_E_INTERRUPTED:
1273 debug_print("Unexpected SSL read result %d\n", r);
1282 gint sock_read(SockInfo *sock, gchar *buf, gint len)
1286 cm_return_val_if_fail(sock != NULL, -1);
1290 ret = ssl_read(sock->ssl, buf, len);
1293 ret = fd_read(sock->sock, buf, len);
1296 sock->state = CONN_DISCONNECTED;
1300 gint fd_write(gint fd, const gchar *buf, gint len)
1302 if (fd_check_io(fd, G_IO_OUT) < 0)
1305 if (fd_is_w32_socket (fd))
1306 return send(fd, buf, len, 0);
1307 return write(fd, buf, len);
1311 static gint ssl_write(gnutls_session_t ssl, const gchar *buf, gint len)
1315 if (fd_check_io(GPOINTER_TO_INT(gnutls_transport_get_ptr(ssl)), G_IO_OUT) < 0)
1318 ret = gnutls_record_send(ssl, buf, len);
1323 case GNUTLS_E_AGAIN:
1324 case GNUTLS_E_INTERRUPTED:
1334 gint sock_write(SockInfo *sock, const gchar *buf, gint len)
1338 cm_return_val_if_fail(sock != NULL, -1);
1342 ret = ssl_write(sock->ssl, buf, len);
1345 ret = fd_write(sock->sock, buf, len);
1348 sock->state = CONN_DISCONNECTED;
1352 gint fd_write_all(gint fd, const gchar *buf, gint len)
1357 if (fd_check_io(fd, G_IO_OUT) < 0)
1360 signal(SIGPIPE, SIG_IGN);
1362 if (fd_is_w32_socket(fd))
1363 n = send(fd, buf, len, 0);
1365 n = write(fd, buf, len);
1368 log_error(LOG_PROTOCOL, _("write on fd%d: %s\n"), fd, g_strerror(errno));
1380 static gint ssl_write_all(gnutls_session_t ssl, const gchar *buf, gint len)
1385 n = ssl_write(ssl, buf, len);
1397 gint sock_write_all(SockInfo *sock, const gchar *buf, gint len)
1401 cm_return_val_if_fail(sock != NULL, -1);
1405 ret = ssl_write_all(sock->ssl, buf, len);
1408 ret = fd_write_all(sock->sock, buf, len);
1411 sock->state = CONN_DISCONNECTED;
1415 static gint fd_recv(gint fd, gchar *buf, gint len, gint flags)
1417 if (fd_check_io(fd, G_IO_IN) < 0)
1420 return recv(fd, buf, len, flags);
1423 gint fd_gets(gint fd, gchar *buf, gint len)
1425 gchar *newline, *bp = buf;
1432 fd_check_io(fd, G_IO_IN);
1436 MSKB Article ID: Q147714
1437 Windows Sockets 2 Service Provider Interface Limitations
1438 Polling with recv(MSG_PEEK) to determine when a complete message
1440 Reason and Workaround not available.
1442 Single-byte send() and recv().
1443 Reason: Couple one-byte sends with Nagle disabled.
1444 Workaround: Send modest amounts and receive as much as possible.
1447 if (recv(fd, bp, 1, 0) <= 0)
1454 #else /*!G_OS_WIN32*/
1456 if ((n = fd_recv(fd, bp, len, MSG_PEEK)) <= 0)
1458 if ((newline = memchr(bp, '\n', n)) != NULL)
1459 n = newline - bp + 1;
1460 if ((n = fd_read(fd, bp, n)) < 0)
1464 } while (!newline && len);
1465 #endif /*!G_OS_WIN32*/
1471 gint sock_close(SockInfo *sock)
1479 g_io_channel_unref(sock->sock_ch);
1483 ssl_done_socket(sock);
1484 if (sock->g_source != 0 && g_main_context_find_source_by_id(NULL, sock->g_source) != NULL)
1485 g_source_remove(sock->g_source);
1489 shutdown(sock->sock, 1); /* complete transfer before close */
1490 ret = closesocket(sock->sock);
1492 ret = fd_close(sock->sock);
1495 g_free(sock->canonical_name);
1496 g_free(sock->hostname);
1502 gint fd_close(gint fd)