apps/irssi/src/silc/core/silc-servers.c

   1 /*
   2   silc-server.c : irssi
   3
   4   Copyright (C) 2000 - 2001 Timo Sirainen
   5                             Pekka Riikonen <priikone@poseidon.pspt.fi>
   6
   7   This program is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation; either version 2 of the License, or
  10   (at your option) any later version.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with this program; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 */
  21
  22 #include "module.h"
  23
  24 #include "net-nonblock.h"
  25 #include "net-sendbuffer.h"
  26 #include "signals.h"
  27 #include "servers.h"
  28 #include "commands.h"
  29 #include "levels.h"
  30 #include "modules.h"
  31 #include "rawlog.h"
  32 #include "misc.h"
  33 #include "settings.h"
  34
  35 #include "servers-setup.h"
  36
  37 #include "silc-servers.h"
  38 #include "silc-channels.h"
  39 #include "silc-queries.h"
  40 #include "silc-nicklist.h"
  41 #include "window-item-def.h"
  42
  43 #include "fe-common/core/printtext.h"
  44 #include "fe-common/silc/module-formats.h"
  45
  46 void silc_servers_reconnect_init(void);
  47 void silc_servers_reconnect_deinit(void);
  48
  49 static void silc_send_channel(SILC_SERVER_REC *server,
  50                               char *channel, char *msg)
  51 {
  52   SILC_CHANNEL_REC *rec;
  53
  54   rec = silc_channel_find(server, channel);
  55   if (rec == NULL || rec->entry == NULL)
  56     return;
  57
  58   silc_client_send_channel_message(silc_client, server->conn, rec->entry,
  59                                    NULL, 0, msg, strlen(msg), TRUE);
  60 }
  61
  62 typedef struct {
  63   char *nick;
  64   char *msg;
  65   SILC_SERVER_REC *server;
  66 } PRIVMSG_REC;
  67
  68 /* Callback function that sends the private message if the client was
  69    resolved from the server. */
  70
  71 static void silc_send_msg_clients(SilcClient client,
  72                                   SilcClientConnection conn,
  73                                   SilcClientEntry *clients,
  74                                   uint32 clients_count,
  75                                   void *context)
  76 {
  77   PRIVMSG_REC *rec = context;
  78   SILC_SERVER_REC *server = rec->server;
  79   SilcClientEntry target;
  80   char *nickname = NULL;
  81
  82   if (!clients_count) {
  83     printtext(NULL, NULL, MSGLEVEL_CLIENTERROR, "Unknown nick: %s", rec->nick);
  84   } else {
  85     if (clients_count > 1) {
  86       silc_parse_userfqdn(rec->nick, &nickname, NULL);
  87
  88       /* Find the correct one. The rec->nick might be a formatted nick
  89          so this will find the correct one. */
  90       clients = silc_client_get_clients_local(silc_client, server->conn,
  91                                               nickname, rec->nick,
  92                                               &clients_count);
  93       if (!clients) {
  94         printtext(NULL, NULL, MSGLEVEL_CLIENTERROR, "Unknown nick: %s",
  95                   rec->nick);
  96         silc_free(nickname);
  97         goto out;
  98       }
  99       silc_free(nickname);
 100     }
 101
 102     target = clients[0];
 103
 104     /* Send the private message */
 105     silc_client_send_private_message(client, conn, target, 0,
 106                                      rec->msg, strlen(rec->msg),
 107                                      TRUE);
 108   }
 109
 110  out:
 111   g_free(rec->nick);
 112   g_free(rec->msg);
 113   g_free(rec);
 114 }
 115
 116 static void silc_send_msg(SILC_SERVER_REC *server, char *nick, char *msg)
 117 {
 118   PRIVMSG_REC *rec;
 119   SilcClientEntry *clients;
 120   uint32 clients_count;
 121   char *nickname = NULL;
 122
 123   if (!silc_parse_userfqdn(nick, &nickname, NULL)) {
 124     printformat_module("fe-common/silc", server, NULL,
 125                        MSGLEVEL_CRAP, SILCTXT_BAD_NICK, nick);
 126     return;
 127   }
 128
 129   /* Find client entry */
 130   clients = silc_client_get_clients_local(silc_client, server->conn,
 131                                           nickname, nick, &clients_count);
 132   silc_free(nickname);
 133
 134   if (!clients) {
 135     rec = g_new0(PRIVMSG_REC, 1);
 136     rec->nick = g_strdup(nick);
 137     rec->msg = g_strdup(msg);
 138     rec->server = server;
 139
 140     /* Could not find client with that nick, resolve it from server. */
 141     silc_client_get_clients(silc_client, server->conn,
 142                             nickname, NULL, silc_send_msg_clients, rec);
 143     return;
 144   }
 145
 146   /* Send the private message directly */
 147   silc_client_send_private_message(silc_client, server->conn,
 148                                    clients[0], 0, msg, strlen(msg), TRUE);
 149 }
 150
 151 static int isnickflag_func(char flag)
 152 {
 153   return flag == '@' || flag == '+';
 154 }
 155
 156 static int ischannel_func(const char *data)
 157 {
 158   return *data == '#';
 159 }
 160
 161 const char *get_nick_flags(void)
 162 {
 163   return "@\0\0";
 164 }
 165
 166 static void send_message(SILC_SERVER_REC *server, char *target, char *msg)
 167 {
 168   g_return_if_fail(server != NULL);
 169   g_return_if_fail(target != NULL);
 170   g_return_if_fail(msg != NULL);
 171
 172   if (*target == '#')
 173     silc_send_channel(server, target, msg);
 174   else
 175     silc_send_msg(server, target, msg);
 176 }
 177
 178 static void sig_connected(SILC_SERVER_REC *server)
 179 {
 180   SilcClientConnection conn;
 181   int fd;
 182
 183   if (!IS_SILC_SERVER(server))
 184     return;
 185
 186   conn = silc_client_add_connection(silc_client,
 187                                     server->connrec->address,
 188                                     server->connrec->port,
 189                                     server);
 190   server->conn = conn;
 191
 192   fd = g_io_channel_unix_get_fd(net_sendbuffer_handle(server->handle));
 193   if (!silc_client_start_key_exchange(silc_client, conn, fd)) {
 194     /* some internal error occured */
 195     server_disconnect(SERVER(server));
 196     signal_stop();
 197     return;
 198   }
 199
 200   server->isnickflag = isnickflag_func;
 201   server->ischannel = ischannel_func;
 202   server->get_nick_flags = get_nick_flags;
 203   server->send_message = (void *) send_message;
 204 }
 205
 206 static void sig_disconnected(SILC_SERVER_REC *server)
 207 {
 208   if (!IS_SILC_SERVER(server))
 209     return;
 210
 211   if (server->conn && server->conn->sock != NULL) {
 212     silc_client_close_connection(silc_client, NULL, server->conn);
 213
 214     /* SILC closes the handle */
 215     g_io_channel_unref(net_sendbuffer_handle(server->handle));
 216     net_sendbuffer_destroy(server->handle, FALSE);
 217     server->handle = NULL;
 218   }
 219 }
 220
 221 SILC_SERVER_REC *silc_server_connect(SILC_SERVER_CONNECT_REC *conn)
 222 {
 223   SILC_SERVER_REC *server;
 224
 225   g_return_val_if_fail(IS_SILC_SERVER_CONNECT(conn), NULL);
 226   if (conn->address == NULL || *conn->address == '\0')
 227     return NULL;
 228   if (conn->nick == NULL || *conn->nick == '\0') {
 229     printtext(NULL, NULL, MSGLEVEL_CLIENTERROR,
 230               "Cannot connect: nickname is not set");
 231     return NULL;
 232   }
 233
 234   server = g_new0(SILC_SERVER_REC, 1);
 235   server->chat_type = SILC_PROTOCOL;
 236   server->connrec = conn;
 237   if (server->connrec->port <= 0)
 238     server->connrec->port = 706;
 239
 240   if (!server_start_connect((SERVER_REC *) server)) {
 241     server_connect_free(SERVER_CONNECT(conn));
 242     g_free(server);
 243     return NULL;
 244   }
 245
 246   return server;
 247 }
 248
 249 /* Return a string of all channels in server in server->channels_join()
 250    format */
 251
 252 char *silc_server_get_channels(SILC_SERVER_REC *server)
 253 {
 254   GSList *tmp;
 255   GString *chans;
 256   char *ret;
 257
 258   g_return_val_if_fail(server != NULL, FALSE);
 259
 260   chans = g_string_new(NULL);
 261   for (tmp = server->channels; tmp != NULL; tmp = tmp->next) {
 262     CHANNEL_REC *channel = tmp->data;
 263
 264     g_string_sprintfa(chans, "%s,", channel->name);
 265   }
 266
 267   if (chans->len > 0)
 268     g_string_truncate(chans, chans->len-1);
 269
 270   ret = chans->str;
 271   g_string_free(chans, FALSE);
 272
 273   return ret;
 274 }
 275
 276 /* Syntaxes of all SILC commands for HELP files (the help file generation
 277    will snoop these from here). */
 278
 279 /* SYNTAX: BAN <channel> [+|-[<nickname>[@<server>[!<username>[@hostname>]]]]] */
 280 /* SYNTAX: CMODE <channel> +|-<modes> [{ <arguments>}] */
 281 /* SYNTAX: CUMODE <channel> +|-<modes> <nickname>[@<hostname>] [-pubkey|<passwd>] */
 282 /* SYNTAX: GETKEY <nickname or server name> */
 283 /* SYNTAX: INVITE <channel> [<nickname>[@hostname>] */
 284 /* SYNTAX: INVITE <channel> [+|-[<nickname>[@<server>[!<username>[@hostname>]]]]] */
 285 /* SYNTAX: KEY MSG <nickname> set|unset|list|agreement|negotiate [<arguments>] */
 286 /* SYNTAX: KEY CHANNEL <channel> set|unset|list|agreement|negotiate [<arguments>] */
 287 /* SYNTAX: KICK <channel> <nickname>[@<hostname>] [<comment>] */
 288 /* SYNTAX: KILL <nickname>[@<hostname>] [<comment>] */
 289 /* SYNTAX: OPER <username> [-pubkey] */
 290 /* SYNTAX: SILCOPER <username> [-pubkey] */
 291 /* SYNTAX: TOPIC <channel> [<topic>] */
 292 /* SYNTAX: UMODE +|-<modes> */
 293 /* SYNTAX: WHOIS <nickname>[@<hostname>] [<count>] */
 294 /* SYNTAX: WHOWAS <nickname>[@<hostname>] [<count>] */
 295 /* SYNTAX: CLOSE <server> [<port>] */
 296 /* SYNTAX: SHUTDOWN */
 297 /* SYNTAX: MOTD [<server>] */
 298 /* SYNTAX: LIST [<channel>] */
 299 /* SYNTAX: ME <message> */
 300 /* SYNTAX: ACTION <channel> <message> */
 301 /* SYNTAX: AWAY [<message>] */
 302 /* SYNTAX: INFO [<server>] */
 303 /* SYNTAX: NICK <nickname> */
 304 /* SYNTAX: NOTICE <message> */
 305 /* SYNTAX: PART [<channel>] */
 306 /* SYNTAX: PING */
 307 /* SYNTAX: SCONNECT <server> [<port>] */
 308 /* SYNTAX: USERS <channel> */
 309
 310 void silc_command_exec(SILC_SERVER_REC *server,
 311                        const char *command, const char *args)
 312 {
 313   uint32 argc = 0;
 314   unsigned char **argv;
 315   uint32 *argv_lens, *argv_types;
 316   char *data, *tmpcmd;
 317   SilcClientCommand *cmd;
 318   SilcClientCommandContext ctx;
 319
 320   g_return_if_fail(server != NULL);
 321
 322   tmpcmd = g_strdup(command);
 323   g_strup(tmpcmd);
 324   cmd = silc_client_command_find(tmpcmd);
 325   g_free(tmpcmd);
 326   if (cmd == NULL)
 327     return;
 328
 329   /* Now parse all arguments */
 330   data = g_strconcat(command, " ", args, NULL);
 331   silc_parse_command_line(data, &argv, &argv_lens,
 332                           &argv_types, &argc, cmd->max_args);
 333   g_free(data);
 334
 335   /* Allocate command context. This and its internals must be free'd
 336      by the command routine receiving it. */
 337   ctx = silc_client_command_alloc();
 338   ctx->client = silc_client;
 339   ctx->conn = server->conn;
 340   ctx->command = cmd;
 341   ctx->argc = argc;
 342   ctx->argv = argv;
 343   ctx->argv_lens = argv_lens;
 344   ctx->argv_types = argv_types;
 345
 346   /* Execute command */
 347   (*cmd->cb)(ctx, NULL);
 348 }
 349
 350 /* Generic command function to call any SILC command directly. */
 351
 352 static void command_self(const char *data, SILC_SERVER_REC *server,
 353                          WI_ITEM_REC *item)
 354 {
 355   if (!IS_SILC_SERVER(server) || !server->connected) {
 356     printtext(NULL, NULL, MSGLEVEL_CLIENTERROR, "Not connected to server");
 357     return;
 358   }
 359
 360   if (IS_SILC_CHANNEL(item)) {
 361     SILC_CHANNEL_REC *chanrec;
 362     chanrec = silc_channel_find(server, item->name);
 363     if (chanrec)
 364       server->conn->current_channel = chanrec->entry;
 365   }
 366
 367   silc_command_exec(server, current_command, data);
 368   signal_stop();
 369 }
 370
 371 /* SCONNECT command.  Calls actually SILC's CONNECT command since Irssi
 372    has CONNECT command for other purposes. */
 373
 374 static void command_sconnect(const char *data, SILC_SERVER_REC *server)
 375 {
 376   if (!IS_SILC_SERVER(server) || !server->connected) {
 377     printtext(NULL, NULL, MSGLEVEL_CLIENTERROR, "Not connected to server");
 378     return;
 379   }
 380
 381   silc_command_exec(server, "CONNECT", data);
 382   signal_stop();
 383 }
 384
 385 static void event_text(const char *line, SILC_SERVER_REC *server,
 386                        WI_ITEM_REC *item)
 387 {
 388   char *str;
 389
 390   g_return_if_fail(line != NULL);
 391
 392   if (!IS_SILC_ITEM(item))
 393     return;
 394
 395   str = g_strdup_printf("%s %s", item->name, line);
 396   signal_emit("command msg", 3, str, server, item);
 397   g_free(str);
 398
 399   signal_stop();
 400 }
 401
 402 typedef struct {
 403   SILC_SERVER_REC *server;
 404   char *data;
 405   WI_ITEM_REC *item;
 406 } *FileGetClients;
 407
 408 SILC_CLIENT_CMD_FUNC(file_get_clients)
 409 {
 410   FileGetClients internal = (FileGetClients)context;
 411   signal_emit("command file", 3, internal->data, internal->server,
 412               internal->item);
 413   silc_free(internal->data);
 414   silc_free(internal);
 415 }
 416
 417 static void command_file(const char *data, SILC_SERVER_REC *server,
 418                          WI_ITEM_REC *item)
 419 {
 420   SilcClientConnection conn;
 421   SilcClientEntry client_entry;
 422   char *nickname, *tmp;
 423   unsigned char **argv;
 424   uint32 argc;
 425   uint32 *argv_lens, *argv_types;
 426   int type;
 427
 428   if (!server || !IS_SILC_SERVER(server) || !server->connected)
 429     cmd_return_error(CMDERR_NOT_CONNECTED);
 430
 431   conn = server->conn;
 432
 433   /* Now parse all arguments */
 434   tmp = g_strconcat("KEY", " ", data, NULL);
 435   silc_parse_command_line(tmp, &argv, &argv_lens, &argv_types, &argc, 4);
 436   g_free(tmp);
 437
 438   type = 0;
 439   if (!strcasecmp(argv[1], "send"))
 440     type = 1;
 441   if (!strcasecmp(argv[1], "receive"))
 442     type = 2;
 443
 444   /* Parse the typed nickname. */
 445   if (!silc_parse_userfqdn(argv[3], &nickname, NULL)) {
 446     printformat_module("fe-common/silc", server, NULL,
 447                        MSGLEVEL_CRAP, SILCTXT_BAD_NICK, argv[2]);
 448     return;
 449   }
 450
 451   /* Find client entry */
 452   client_entry = silc_idlist_get_client(silc_client, conn, nickname,
 453                                         argv[3], TRUE);
 454   if (!client_entry) {
 455     FileGetClients inter = silc_calloc(1, sizeof(*inter));
 456     inter->server = server;
 457     inter->data = strdup(data);
 458     inter->item = item;
 459
 460     /* Client entry not found, it was requested thus mark this to be
 461        pending command. */
 462     silc_client_command_pending(conn, SILC_COMMAND_IDENTIFY,
 463                                 conn->cmd_ident,
 464                                 NULL, silc_client_command_file_get_clients,
 465                                 inter);
 466     goto out;
 467   }
 468
 469   switch (type) {
 470   case 1:
 471     silc_client_file_send(silc_client, conn, NULL, NULL, client_entry,
 472                           argv[2]);
 473     break;
 474
 475   case 2:
 476     break;
 477
 478   default:
 479     break;
 480   }
 481
 482  out:
 483   silc_free(nickname);
 484 }
 485
 486 void silc_server_init(void)
 487 {
 488   silc_servers_reconnect_init();
 489
 490   signal_add_first("server connected", (SIGNAL_FUNC) sig_connected);
 491   signal_add("server disconnected", (SIGNAL_FUNC) sig_disconnected);
 492   signal_add("send text", (SIGNAL_FUNC) event_text);
 493   command_bind("whois", MODULE_NAME, (SIGNAL_FUNC) command_self);
 494   command_bind("whowas", MODULE_NAME, (SIGNAL_FUNC) command_self);
 495   command_bind("nick", MODULE_NAME, (SIGNAL_FUNC) command_self);
 496   command_bind("topic", MODULE_NAME, (SIGNAL_FUNC) command_self);
 497   command_bind("cmode", MODULE_NAME, (SIGNAL_FUNC) command_self);
 498   command_bind("cumode", MODULE_NAME, (SIGNAL_FUNC) command_self);
 499   command_bind("users", MODULE_NAME, (SIGNAL_FUNC) command_self);
 500   command_bind("list", MODULE_NAME, (SIGNAL_FUNC) command_self);
 501   command_bind("ban", MODULE_NAME, (SIGNAL_FUNC) command_self);
 502   command_bind("oper", MODULE_NAME, (SIGNAL_FUNC) command_self);
 503   command_bind("silcoper", MODULE_NAME, (SIGNAL_FUNC) command_self);
 504   command_bind("umode", MODULE_NAME, (SIGNAL_FUNC) command_self);
 505   command_bind("invite", MODULE_NAME, (SIGNAL_FUNC) command_self);
 506   command_bind("kill", MODULE_NAME, (SIGNAL_FUNC) command_self);
 507   command_bind("kick", MODULE_NAME, (SIGNAL_FUNC) command_self);
 508   command_bind("info", MODULE_NAME, (SIGNAL_FUNC) command_self);
 509   command_bind("ping", MODULE_NAME, (SIGNAL_FUNC) command_self);
 510   command_bind("motd", MODULE_NAME, (SIGNAL_FUNC) command_self);
 511   command_bind("close", MODULE_NAME, (SIGNAL_FUNC) command_self);
 512   command_bind("shutdown", MODULE_NAME, (SIGNAL_FUNC) command_self);
 513   command_bind("getkey", MODULE_NAME, (SIGNAL_FUNC) command_self);
 514   command_bind("sconnect", MODULE_NAME, (SIGNAL_FUNC) command_sconnect);
 515   command_bind("file", MODULE_NAME, (SIGNAL_FUNC) command_file);
 516
 517   command_set_options("connect", "+silcnet");
 518 }
 519
 520 void silc_server_deinit(void)
 521 {
 522   silc_servers_reconnect_deinit();
 523
 524   signal_remove("server connected", (SIGNAL_FUNC) sig_connected);
 525   signal_remove("server disconnected", (SIGNAL_FUNC) sig_disconnected);
 526   signal_remove("send text", (SIGNAL_FUNC) event_text);
 527   command_unbind("whois", (SIGNAL_FUNC) command_self);
 528   command_unbind("whowas", (SIGNAL_FUNC) command_self);
 529   command_unbind("nick", (SIGNAL_FUNC) command_self);
 530   command_unbind("topic", (SIGNAL_FUNC) command_self);
 531   command_unbind("cmode", (SIGNAL_FUNC) command_self);
 532   command_unbind("cumode", (SIGNAL_FUNC) command_self);
 533   command_unbind("users", (SIGNAL_FUNC) command_self);
 534   command_unbind("list", (SIGNAL_FUNC) command_self);
 535   command_unbind("oper", (SIGNAL_FUNC) command_self);
 536   command_unbind("silcoper", (SIGNAL_FUNC) command_self);
 537   command_unbind("umode", (SIGNAL_FUNC) command_self);
 538   command_unbind("invite", (SIGNAL_FUNC) command_self);
 539   command_unbind("kill", (SIGNAL_FUNC) command_self);
 540   command_unbind("kick", (SIGNAL_FUNC) command_self);
 541   command_unbind("info", (SIGNAL_FUNC) command_self);
 542   command_unbind("ping", (SIGNAL_FUNC) command_self);
 543   command_unbind("motd", (SIGNAL_FUNC) command_self);
 544   command_unbind("ban", (SIGNAL_FUNC) command_self);
 545   command_unbind("close", (SIGNAL_FUNC) command_self);
 546   command_unbind("shutdown", (SIGNAL_FUNC) command_self);
 547   command_unbind("getkey", (SIGNAL_FUNC) command_self);
 548   command_unbind("sconnect", (SIGNAL_FUNC) command_sconnect);
 549   command_unbind("file", (SIGNAL_FUNC) command_file);
 550 }