apps/irssi/src/core/session.c

   1 /*
   2  session.c : irssi
   3
   4     Copyright (C) 2001 Timo Sirainen
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #include "module.h"
  22 #include "signals.h"
  23 #include "commands.h"
  24 #include "args.h"
  25 #include "net-sendbuffer.h"
  26 #include "pidwait.h"
  27 #include "lib-config/iconfig.h"
  28
  29 #include "chat-protocols.h"
  30 #include "servers.h"
  31 #include "servers-setup.h"
  32 #include "channels.h"
  33 #include "nicklist.h"
  34
  35 static char *session_file;
  36 static char *irssi_binary;
  37
  38 static char **session_args;
  39
  40 void session_set_binary(const char *path)
  41 {
  42         const char *envpath;
  43         char **paths, **tmp;
  44         char *str;
  45
  46         g_free_and_null(irssi_binary);
  47
  48         if (g_path_is_absolute(path)) {
  49                 /* full path - easy */
  50                 irssi_binary = g_strdup(path);
  51                 return;
  52         }
  53
  54         if (strchr(path, G_DIR_SEPARATOR) != NULL) {
  55                 /* relative path */
  56                 str = g_get_current_dir();
  57                 irssi_binary = g_strconcat(str, G_DIR_SEPARATOR_S, path, NULL);
  58                 g_free(str);
  59                 return;
  60         }
  61
  62         /* we'll need to find it from path. */
  63         envpath = g_getenv("PATH");
  64         if (envpath == NULL) return;
  65
  66         paths = g_strsplit(envpath, ":", -1);
  67         for (tmp = paths; *tmp != NULL; tmp++) {
  68                 str = g_strconcat(*tmp, G_DIR_SEPARATOR_S, path, NULL);
  69                 if (access(str, X_OK) == 0) {
  70                         irssi_binary = str;
  71                         break;
  72                 }
  73                 g_free(str);
  74         }
  75         g_strfreev(paths);
  76 }
  77
  78 void session_upgrade(void)
  79 {
  80         if (session_args == NULL)
  81                 return;
  82
  83         execvp(session_args[0], session_args);
  84         fprintf(stderr, "exec failed: %s: %s\n",
  85                 session_args[0], g_strerror(errno));
  86 }
  87
  88 /* SYNTAX: UPGRADE [<irssi binary path>] */
  89 static void cmd_upgrade(const char *data)
  90 {
  91         CONFIG_REC *session;
  92         char *session_file, *str;
  93
  94         if (*data == '\0')
  95                 data = irssi_binary;
  96         if (data == NULL)
  97                 cmd_return_error(CMDERR_NOT_ENOUGH_PARAMS);
  98
  99         /* save the session */
 100         session_file = g_strdup_printf("%s/session", get_irssi_dir());
 101         session = config_open(session_file, 0600);
 102         unlink(session_file);
 103
 104         signal_emit("session save", 1, session);
 105         config_write(session, NULL, -1);
 106         config_close(session);
 107
 108         /* data may contain some other program as well, like
 109            /UPGRADE /usr/bin/screen irssi */
 110         str = g_strdup_printf("%s --noconnect --session=%s --home=%s --config=%s",
 111                               data, session_file, get_irssi_dir(), get_irssi_config());
 112         session_args = g_strsplit(str, " ", -1);
 113         g_free(str);
 114
 115         signal_emit("gui exit", 0);
 116 }
 117
 118 static void session_save_nick(CHANNEL_REC *channel, NICK_REC *nick,
 119                               CONFIG_REC *config, CONFIG_NODE *node)
 120 {
 121         node = config_node_section(node, NULL, NODE_TYPE_BLOCK);
 122
 123         config_node_set_str(config, node, "nick", nick->nick);
 124         config_node_set_bool(config, node, "op", nick->op);
 125         config_node_set_bool(config, node, "halfop", nick->halfop);
 126         config_node_set_bool(config, node, "voice", nick->voice);
 127
 128         signal_emit("session save nick", 4, channel, nick, config, node);
 129 }
 130
 131 static void session_save_channel_nicks(CHANNEL_REC *channel, CONFIG_REC *config,
 132                                        CONFIG_NODE *node)
 133 {
 134         GSList *tmp, *nicks;
 135
 136         node = config_node_section(node, "nicks", NODE_TYPE_LIST);
 137         nicks = nicklist_getnicks(channel);
 138         for (tmp = nicks; tmp != NULL; tmp = tmp->next)
 139                 session_save_nick(channel, tmp->data, config, node);
 140         g_slist_free(nicks);
 141 }
 142
 143 static void session_save_channel(CHANNEL_REC *channel, CONFIG_REC *config,
 144                                  CONFIG_NODE *node)
 145 {
 146         node = config_node_section(node, NULL, NODE_TYPE_BLOCK);
 147
 148         config_node_set_str(config, node, "name", channel->name);
 149         config_node_set_str(config, node, "topic", channel->topic);
 150         config_node_set_str(config, node, "topic_by", channel->topic_by);
 151         config_node_set_int(config, node, "topic_time", channel->topic_time);
 152         config_node_set_str(config, node, "key", channel->key);
 153
 154         signal_emit("session save channel", 3, channel, config, node);
 155 }
 156
 157 static void session_save_server_channels(SERVER_REC *server,
 158                                          CONFIG_REC *config,
 159                                          CONFIG_NODE *node)
 160 {
 161         GSList *tmp;
 162
 163         /* save channels */
 164         node = config_node_section(node, "channels", NODE_TYPE_LIST);
 165         for (tmp = server->channels; tmp != NULL; tmp = tmp->next)
 166                 session_save_channel(tmp->data, config, node);
 167 }
 168
 169 static void session_save_server(SERVER_REC *server, CONFIG_REC *config,
 170                                 CONFIG_NODE *node)
 171 {
 172         int handle;
 173
 174         node = config_node_section(node, NULL, NODE_TYPE_BLOCK);
 175
 176         config_node_set_str(config, node, "chat_type",
 177                             chat_protocol_find_id(server->chat_type)->name);
 178         config_node_set_str(config, node, "address", server->connrec->address);
 179         config_node_set_int(config, node, "port", server->connrec->port);
 180         config_node_set_str(config, node, "chatnet", server->connrec->chatnet);
 181         config_node_set_str(config, node, "password", server->connrec->password);
 182         config_node_set_str(config, node, "nick", server->nick);
 183
 184         handle = g_io_channel_unix_get_fd(net_sendbuffer_handle(server->handle));
 185         config_node_set_int(config, node, "handle", handle);
 186
 187         signal_emit("session save server", 3, server, config, node);
 188
 189         /* fake the server disconnection */
 190         g_io_channel_unref(net_sendbuffer_handle(server->handle));
 191         net_sendbuffer_destroy(server->handle, FALSE);
 192         server->handle = NULL;
 193
 194         server->connection_lost = TRUE;
 195         server->no_reconnect = TRUE;
 196         server_disconnect(server);
 197 }
 198
 199 static void session_restore_channel_nicks(CHANNEL_REC *channel,
 200                                           CONFIG_NODE *node)
 201 {
 202         GSList *tmp;
 203
 204         /* restore nicks */
 205         node = config_node_section(node, "nicks", -1);
 206         if (node != NULL && node->type == NODE_TYPE_LIST) {
 207                 tmp = config_node_first(node->value);
 208                 for (; tmp != NULL; tmp = config_node_next(tmp)) {
 209                         signal_emit("session restore nick", 2,
 210                                     channel, tmp->data);
 211                 }
 212         }
 213 }
 214
 215 static void session_restore_channel(SERVER_REC *server, CONFIG_NODE *node)
 216 {
 217         CHANNEL_REC *channel;
 218         const char *name;
 219
 220         name = config_node_get_str(node, "name", NULL);
 221         if (name == NULL)
 222                 return;
 223
 224         channel = CHAT_PROTOCOL(server)->channel_create(server, name, TRUE);
 225         channel->topic = g_strdup(config_node_get_str(node, "topic", NULL));
 226         channel->topic_by = g_strdup(config_node_get_str(node, "topic_by", NULL));
 227         channel->topic_time = config_node_get_int(node, "topic_time", 0);
 228         channel->key = g_strdup(config_node_get_str(node, "key", NULL));
 229         channel->session_rejoin = TRUE;
 230
 231         signal_emit("session restore channel", 2, channel, node);
 232 }
 233
 234 static void session_restore_server_channels(SERVER_REC *server,
 235                                             CONFIG_NODE *node)
 236 {
 237         GSList *tmp;
 238
 239         /* restore channels */
 240         node = config_node_section(node, "channels", -1);
 241         if (node != NULL && node->type == NODE_TYPE_LIST) {
 242                 tmp = config_node_first(node->value);
 243                 for (; tmp != NULL; tmp = config_node_next(tmp))
 244                         session_restore_channel(server, tmp->data);
 245         }
 246 }
 247
 248 static void session_restore_server(CONFIG_NODE *node)
 249 {
 250         CHAT_PROTOCOL_REC *proto;
 251         SERVER_CONNECT_REC *conn;
 252         SERVER_REC *server;
 253         const char *chat_type, *address, *chatnet, *password, *nick;
 254         int port, handle;
 255
 256         chat_type = config_node_get_str(node, "chat_type", NULL);
 257         address = config_node_get_str(node, "address", NULL);
 258         port = config_node_get_int(node, "port", 0);
 259         chatnet = config_node_get_str(node, "chatnet", NULL);
 260         password = config_node_get_str(node, "password", NULL);
 261         nick = config_node_get_str(node, "nick", NULL);
 262         handle = config_node_get_int(node, "handle", -1);
 263
 264         if (chat_type == NULL || address == NULL || nick == NULL || handle < 0)
 265                 return;
 266
 267         proto = chat_protocol_find(chat_type);
 268         if (proto == NULL || proto->not_initialized) {
 269                 if (handle < 0) close(handle);
 270                 return;
 271         }
 272
 273         conn = server_create_conn(proto->id, address, port,
 274                                   chatnet, password, nick);
 275         if (conn != NULL) {
 276                 conn->reconnection = TRUE;
 277
 278                 server = proto->server_connect(conn);
 279                 server->handle = net_sendbuffer_create(g_io_channel_unix_new(handle), 0);
 280                 server->session_reconnect = TRUE;
 281
 282                 signal_emit("session restore server", 2, server, node);
 283         }
 284 }
 285
 286 static void sig_session_save(CONFIG_REC *config)
 287 {
 288         CONFIG_NODE *node;
 289         GSList *tmp;
 290         GString *str;
 291
 292         /* save servers */
 293         node = config_node_traverse(config, "(servers", TRUE);
 294         while (servers != NULL)
 295                 session_save_server(servers->data, config, node);
 296
 297         /* save pids */
 298         str = g_string_new(NULL);
 299         for (tmp = pidwait_get_pids(); tmp != NULL; tmp = tmp->next)
 300                 g_string_sprintfa(str, "%d ", GPOINTER_TO_INT(tmp->data));
 301         config_node_set_str(config, config->mainnode, "pids", str->str);
 302         g_string_free(str, TRUE);
 303 }
 304
 305 static void sig_session_restore(CONFIG_REC *config)
 306 {
 307         CONFIG_NODE *node;
 308         GSList *tmp;
 309         char **pids, **pid;
 310
 311         /* restore servers */
 312         node = config_node_traverse(config, "(servers", FALSE);
 313         if (node != NULL) {
 314                 tmp = config_node_first(node->value);
 315                 for (; tmp != NULL; tmp = config_node_next(tmp))
 316                         session_restore_server(tmp->data);
 317         }
 318
 319         /* restore pids (so we don't leave zombies) */
 320         pids = g_strsplit(config_node_get_str(config->mainnode, "pids", ""), " ", -1);
 321         for (pid = pids; *pid != NULL; pid++)
 322                 pidwait_add(atoi(*pid));
 323         g_strfreev(pids);
 324 }
 325
 326 static void sig_init_finished(void)
 327 {
 328         CONFIG_REC *session;
 329
 330         if (session_file == NULL)
 331                 return;
 332
 333         session = config_open(session_file, -1);
 334         if (session == NULL)
 335                 return;
 336
 337         config_parse(session);
 338         signal_emit("session restore", 1, session);
 339         config_close(session);
 340
 341         unlink(session_file);
 342         session_file = NULL;
 343 }
 344
 345 void session_init(void)
 346 {
 347         static struct poptOption options[] = {
 348                 { "session", 0, POPT_ARG_STRING, &session_file, 0, "Used by /UPGRADE command", "PATH" },
 349                 { NULL, '\0', 0, NULL }
 350         };
 351
 352         session_file = NULL;
 353         args_register(options);
 354
 355         command_bind("upgrade", NULL, (SIGNAL_FUNC) cmd_upgrade);
 356
 357         signal_add("session save", (SIGNAL_FUNC) sig_session_save);
 358         signal_add("session restore", (SIGNAL_FUNC) sig_session_restore);
 359         signal_add("session save server", (SIGNAL_FUNC) session_save_server_channels);
 360         signal_add("session restore server", (SIGNAL_FUNC) session_restore_server_channels);
 361         signal_add("session save channel", (SIGNAL_FUNC) session_save_channel_nicks);
 362         signal_add("session restore channel", (SIGNAL_FUNC) session_restore_channel_nicks);
 363         signal_add("irssi init finished", (SIGNAL_FUNC) sig_init_finished);
 364 }
 365
 366 void session_deinit(void)
 367 {
 368         g_free_not_null(irssi_binary);
 369
 370         command_unbind("upgrade", (SIGNAL_FUNC) cmd_upgrade);
 371
 372         signal_remove("session save", (SIGNAL_FUNC) sig_session_save);
 373         signal_remove("session restore", (SIGNAL_FUNC) sig_session_restore);
 374         signal_remove("session save server", (SIGNAL_FUNC) session_save_server_channels);
 375         signal_remove("session restore server", (SIGNAL_FUNC) session_restore_server_channels);
 376         signal_remove("session save channel", (SIGNAL_FUNC) session_save_channel_nicks);
 377         signal_remove("session restore channel", (SIGNAL_FUNC) session_restore_channel_nicks);
 378         signal_remove("irssi init finished", (SIGNAL_FUNC) sig_init_finished);
 379 }