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