modcmd.c

   1
   2 #include "modcmd.h"
   3 #include "IRCEvents.h"
   4 #include "IRCParser.h"
   5 #include "ClientSocket.h"
   6 #include "UserNode.h"
   7 #include "ChanNode.h"
   8 #include "ChanUser.h"
   9 #include "WHOHandler.h"
  10 #include "lang.h"
  11 #include "mysqlConn.h"
  12 #include "DBHelper.h"
  13
  14 struct trigger_callback {
  15     int botid;
  16     trigger_callback_t *func;
  17
  18     struct trigger_callback *next;
  19 };
  20
  21 struct command_check_user_cache {
  22     struct ClientSocket *client, *textclient;
  23     struct UserNode *user;
  24     struct ChanNode *chan, *sent_chan;
  25     char **argv;
  26     int argc;
  27     char *message;
  28     struct cmd_binding *cbind;
  29 };
  30
  31 static struct cmd_binding **cmd_binds;
  32 static struct cmd_function *cmd_functions = NULL;
  33 static struct trigger_callback *trigger_callbacks = NULL;
  34 static struct ClientSocket *tmp_text_client;
  35
  36 static const struct default_language_entry msgtab[] = {
  37     {"MODCMD_LESS_PARAM_COUNT", "This command requires more parameters."},
  38     {"MODCMD_CHAN_REQUIRED",    "You must provide the name of a channel that exists."},
  39     {"MODCMD_AUTH_REQUIRED",    "You need to be authenticated with AuthServ to use this command."},
  40     {"MODCMD_PRIVILEGED",       "\002%s\002 is a privileged command."},
  41     {"MODCMD_PUBCMD",           "Public commands in \002%s\002 are restricted."},
  42     {"MODCMD_ACCESS_DENIED",    "Access denied."},
  43     {NULL, NULL}
  44 };
  45
  46 static int get_binds_index(char first_char) {
  47     if(tolower(first_char) >= 'a' && tolower(first_char) <= 'z') {
  48         return tolower(first_char) - 'a';
  49     }
  50     return 26;
  51 }
  52
  53 struct ClientSocket* get_prefered_bot(int botid) {
  54     struct ClientSocket *client;
  55     for(client = getBots(SOCKET_FLAG_READY, NULL); client; client = getBots(SOCKET_FLAG_READY, client)) {
  56         if(client->botid == botid && (client->flags & SOCKET_FLAG_PREFERRED))
  57             return client;
  58     }
  59     return NULL;
  60 }
  61
  62 static char* get_channel_trigger(int botid, struct ChanNode *chan) {
  63     struct trigger_cache *trigger;
  64     for(trigger = chan->trigger; trigger; trigger = trigger->next) {
  65         if(trigger->botid == botid)
  66             return trigger->trigger;
  67     }
  68     struct trigger_callback *cb;
  69     for(cb = trigger_callbacks; cb; cb = cb->next) {
  70         if(cb->botid == botid)
  71             break;
  72     }
  73     char triggerStr[TRIGGERLEN];
  74     if(cb)
  75         cb->func(chan, triggerStr);
  76     else
  77         strcpy(triggerStr, "+");
  78     trigger = malloc(sizeof(*trigger));
  79     if (!trigger) {
  80         perror("malloc() failed");
  81         return 0;
  82     }
  83     trigger->botid = botid;
  84     trigger->trigger = strdup(triggerStr);
  85     trigger->next = chan->trigger;
  86     chan->trigger = trigger;
  87     return trigger->trigger;
  88 }
  89
  90 static void handle_command_async(struct ClientSocket *client, struct UserNode *user, struct ChanNode *chan, struct ChanNode *sent_chan, struct cmd_binding *cbind, char **argv, int argc);
  91
  92 static USERAUTH_CALLBACK(command_checked_auth) {
  93     struct command_check_user_cache *cache = data;
  94     tmp_text_client = cache->textclient;
  95     handle_command_async(cache->client, user, cache->chan, cache->sent_chan, cache->cbind, cache->argv, cache->argc);
  96     free(cache->message);
  97     free(cache);
  98 }
  99
 100 static void handle_command(struct ClientSocket *client, struct UserNode *user, struct ChanNode *chan, char *message) {
 101     struct ChanNode *sent_chan = chan;
 102     if(message[0] == '#') {
 103         char *chanName = message;
 104         message = strstr(message, " ");
 105         if(!message) return;
 106         *message = '\0';
 107         message++;
 108         struct ChanNode *chan2 = getChanByName(chanName);
 109         if(chan2)
 110             chan = chan2;
 111     }
 112     message = strdup(message);
 113     int bind_index = get_binds_index(message[0]);
 114     char *args = strstr(message, " ");
 115     if(args) {
 116         *args = '\0';
 117         args++;
 118     }
 119     struct cmd_binding *cbind;
 120     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 121         if(cbind->botid == client->botid && stricmp(cbind->cmd, message) == 0) {
 122             //get a text bot
 123             tmp_text_client = get_prefered_bot(client->botid);
 124             //parse the arguments...
 125             char *arga[MAXNUMPARAMS];
 126             char **argv;
 127             int argc = 0;
 128             if(args) {
 129                 while(*args) {
 130                     //skip leading spaces
 131                     while (*args == ' ')
 132                         *args++ = 0;
 133                     arga[argc++] = args;
 134                     if (argc >= MAXNUMPARAMS)
 135                         break;
 136                     while (*args != ' ' && *args)
 137                         args++;
 138                 }
 139             }
 140             argv = arga;
 141             if(argc != 0 && argv[0][0] == '#') {
 142                 struct ChanNode *chan2 = getChanByName(argv[0]);
 143                 if(chan2) {
 144                     argv += 1;
 145                     argc -= 1;
 146                     chan = chan2;
 147                 }
 148             }
 149             if(cbind->parameters) {
 150                 //userdefined parameters...
 151                 char *uarga[MAXNUMPARAMS];
 152                 char params[strlen(cbind->parameters)+1];
 153                 strcpy(params, cbind->parameters);
 154                 int uargpos = 0, argi, allargs = 0;
 155                 char *ppos = params;
 156                 char *prev_ppos = params;
 157                 while((ppos = strstr(ppos, " "))) {
 158                     *ppos = '\0';
 159                     if(prev_ppos[0] == '%') {
 160                         prev_ppos++;
 161                         if(prev_ppos[strlen(prev_ppos)-1] == '-') {
 162                             allargs = 1;
 163                             prev_ppos[strlen(prev_ppos)-1] = '\0';
 164                         } else
 165                             allargs = 0;
 166                         argi = atoi(prev_ppos);
 167                         if(argi > 0) {
 168                             if(argi <= argc) continue;
 169                             uarga[uargpos++] = argv[argi-1];
 170                             if(allargs) {
 171                                 for(;argi < argc; argi++)
 172                                     uarga[uargpos++] = argv[argi-1];
 173                             }
 174                         } else if(!strcmp(prev_ppos, "c"))
 175                             uarga[uargpos++] = (chan ? chan->name : NULL);
 176                         else if(!strcmp(prev_ppos, "n"))
 177                             uarga[uargpos++] = user->nick;
 178                     } else {
 179                         uarga[uargpos++] = prev_ppos;
 180                     }
 181                     ppos++;
 182                     prev_ppos = ppos;
 183                 }
 184                 argv = uarga;
 185                 argc = uargpos;
 186             }
 187             if(argc < cbind->func->paramcount) {
 188                 reply(tmp_text_client, user, "MODCMD_LESS_PARAM_COUNT");
 189                 break;
 190             }
 191             if((cbind->func->flags & CMDFLAG_REQUIRE_CHAN) && !chan) {
 192                 reply(tmp_text_client, user, "MODCMD_CHAN_REQUIRED");
 193                 break;
 194             }
 195             if((cbind->func->flags & CMDFLAG_CHECK_AUTH) && !(user->flags & USERFLAG_ISAUTHED)) {
 196                 //check auth...
 197                 struct command_check_user_cache *data = malloc(sizeof(*data));
 198                 char **temp_argv = malloc(argc*sizeof(*temp_argv));
 199                 if (!data || !temp_argv) {
 200                     perror("malloc() failed");
 201                     break;
 202                 }
 203                 memcpy(temp_argv, argv, argc*sizeof(*temp_argv));
 204                 data->argv = temp_argv;
 205                 data->argc = argc;
 206                 data->client = client;
 207                 data->user = user;
 208                 data->chan = chan;
 209                 data->sent_chan = sent_chan;
 210                 data->message = message;
 211                 data->cbind = cbind;
 212                 data->textclient = tmp_text_client;
 213                 get_userauth(user, command_checked_auth, data);
 214                 return;
 215             } else
 216                 handle_command_async(client, user, chan, sent_chan, cbind, argv, argc);
 217             break;
 218         }
 219     }
 220     free(message);
 221 }
 222
 223 static void handle_command_async(struct ClientSocket *client, struct UserNode *user, struct ChanNode *chan, struct ChanNode *sent_chan, struct cmd_binding *cbind, char **argv, int argc) {
 224     MYSQL_RES *res;
 225     MYSQL_ROW row;
 226     int uaccess;
 227     if((cbind->func->flags & CMDFLAG_REQUIRE_AUTH) && !(user->flags & USERFLAG_ISAUTHED)) {
 228         reply(tmp_text_client, user, "MODCMD_AUTH_REQUIRED");
 229         return;
 230     }
 231     if(sent_chan && sent_chan != chan) {
 232         //check pubcmd of this channel
 233         printf_mysql_query("SELECT `channel_pubcmd` FROM `channels` WHERE `channel_name` = '%s'", escape_string(sent_chan->name));
 234         res = mysql_use();
 235         if ((row = mysql_fetch_row(res)) != NULL) {
 236             uaccess = getChannelAccess(user, sent_chan, 1);
 237             if(row[0] && uaccess < atoi(row[0])) { //NOTE: HARDCODED DEFAULT: pubcmd = 0
 238                 reply(tmp_text_client, user, "MODCMD_PUBCMD", sent_chan->name);
 239                 return;
 240             }
 241         }
 242     }
 243     int global_access = ((cbind->flags & CMDFLAG_OVERRIDE_GLOBAL_ACCESS) ? cbind->global_access : cbind->func->global_access);
 244     if(global_access > 0) {
 245         int user_global_access = 0;
 246         printf_mysql_query("SELECT `user_access` FROM `users` WHERE `user_user` = '%s'", escape_string(user->auth));
 247         res = mysql_use();
 248         if ((row = mysql_fetch_row(res)) != NULL) {
 249             user_global_access = atoi(row[0]);
 250         }
 251         if(user_global_access < global_access) {
 252             if(!user_global_access)
 253                 reply(tmp_text_client, user, "MODCMD_PRIVILEGED", cbind->cmd);
 254             else
 255                 reply(tmp_text_client, user, "MODCMD_ACCESS_DENIED");
 256             return;
 257         }
 258     }
 259     if((cbind->func->flags & CMDFLAG_REGISTERED_CHAN)) {
 260         MYSQL_ROW defaults = NULL;
 261         char access_list[256];
 262         int access_pos = 0;
 263         int access_count = 0;
 264         int minaccess = 0;
 265         char *str_a, *str_b = cbind->func->channel_access, *str_c;
 266         if(cbind->flags & CMDFLAG_OVERRIDE_CHANNEL_ACCESS)
 267             str_b = cbind->channel_access;
 268         access_list[0] = '\0';
 269         if(str_b) {
 270             str_c = strdup(str_b);
 271             str_b = str_c;
 272             while((str_a = str_b)) {
 273                 str_b = strstr(str_a, ",");
 274                 if(str_b) {
 275                     *str_b = '\0';
 276                     str_b++;
 277                 }
 278                 if(*str_a == '#') {
 279                     str_a++;
 280                     access_pos += sprintf(access_list+access_pos, ", `%s`", str_a);
 281                     access_count++;
 282                 } else {
 283                     if(atoi(str_a) > minaccess)
 284                         minaccess = atoi(str_a);
 285                 }
 286             }
 287             free(str_c);
 288         }
 289         if(!(chan->flags & CHANFLAG_REQUESTED_CHANINFO) || (sent_chan && sent_chan == chan) || access_count || minaccess) {
 290             printf_mysql_query("SELECT `channel_id`, `channel_pubcmd` %s FROM `channels` WHERE `channel_name` = '%s'", access_list, escape_string(chan->name));
 291             res = mysql_use();
 292             if ((row = mysql_fetch_row(res)) != NULL) {
 293                 chan->flags |= CHANFLAG_CHAN_REGISTERED;
 294                 chan->channel_id = atoi(row[0]);
 295                 if((sent_chan && sent_chan == chan) || access_count || minaccess) {
 296                     uaccess = getChannelAccess(user, chan, 1);
 297                     if(uaccess < minaccess) {
 298                         //ACCESS DENIED
 299                         reply(tmp_text_client, user, "MODCMD_ACCESS_DENIED");
 300                         return;
 301                     }
 302                     if(!row[1] && !defaults) {
 303                         printf_mysql_query("SELECT `channel_id`, `channel_pubcmd` %s FROM `channels` WHERE `channel_name` = 'defaults'", access_list);
 304                         defaults = mysql_fetch_row(mysql_use());
 305                     }
 306                     if(sent_chan && (sent_chan == chan) && uaccess < (row[1] ? atoi(row[1]) : atoi(defaults[1]))) {
 307                         //PUBCMD
 308                         reply(tmp_text_client, user, "MODCMD_PUBCMD", chan->name);
 309                         return;
 310                     }
 311                     int i;
 312                     for(i = 0; i < access_count; i++) {
 313                         if(!row[2+i] && !defaults) {
 314                             printf_mysql_query("SELECT `channel_id`, `channel_pubcmd` %s FROM `channels` WHERE `channel_name` = 'defaults'", access_list);
 315                             defaults = mysql_fetch_row(mysql_use());
 316                         }
 317                         if(uaccess < (row[2+i] ? atoi(row[2+i]) : atoi(defaults[2+i]))) {
 318                             reply(tmp_text_client, user, "MODCMD_ACCESS_DENIED");
 319                             return;
 320                         }
 321                     }
 322                 }
 323             }
 324             chan->flags |= CHANFLAG_REQUESTED_CHANINFO;
 325         }
 326         if(!(chan->flags & CHANFLAG_CHAN_REGISTERED)) {
 327             reply(tmp_text_client, user, "MODCMD_CHAN_REQUIRED");
 328             return;
 329         }
 330         printf_mysql_query("SELECT `botid` FROM `bot_channels` LEFT JOIN `bots` ON `bot_channels`.`botid` = `bots`.`id` WHERE `chanid` = '%d' AND `botclass` = '%d'", chan->channel_id, client->botid);
 331         res = mysql_use();
 332         if ((row = mysql_fetch_row(res)) == NULL) {
 333             reply(tmp_text_client, user, "MODCMD_CHAN_REQUIRED");
 334             return;
 335         }
 336     }
 337     if((cbind->func->flags & CMDFLAG_REQUIRE_GOD) && !isGodMode(user)) {
 338         reply(tmp_text_client, user, "MODCMD_PRIVILEGED", cbind->cmd);
 339         return;
 340     }
 341     cbind->func->func(client, user, chan, argv, argc);
 342 }
 343
 344 static void got_chanmsg(struct UserNode *user, struct ChanNode *chan, char *message) {
 345     fd_set fds;
 346     char *trigger;
 347     struct ClientSocket *client;
 348     FD_ZERO(&fds);
 349     for(client = getBots(SOCKET_FLAG_READY, NULL); client; client = getBots(SOCKET_FLAG_READY, client)) {
 350         if(isUserOnChan(client->user, chan) && (client->flags & SOCKET_FLAG_PREFERRED) && !FD_ISSET(client->botid, &fds)) {
 351             FD_SET(client->botid, &fds);
 352             trigger = get_channel_trigger(client->botid, chan);
 353             if(stricmplen(message, trigger, strlen(trigger)) == 0) {
 354                 handle_command(client, user, chan, message + strlen(trigger));
 355             }
 356         }
 357     }
 358     for(client = getBots(SOCKET_FLAG_READY, NULL); client; client = getBots(SOCKET_FLAG_READY, client)) {
 359         if(isUserOnChan(client->user, chan) && !FD_ISSET(client->botid, &fds)) {
 360             FD_SET(client->botid, &fds);
 361             trigger = get_channel_trigger(client->botid, chan);
 362             if(stricmplen(message, trigger, strlen(trigger)) == 0) {
 363                 handle_command(client, user, chan, message + strlen(trigger));
 364             }
 365         }
 366     }
 367 }
 368
 369 static void got_privmsg(struct UserNode *user, struct UserNode *target, char *message) {
 370     struct ClientSocket *client;
 371     for(client = getBots(SOCKET_FLAG_READY, NULL); client; client = getBots(SOCKET_FLAG_READY, client)) {
 372         if(client->user == target) {
 373             handle_command(client, user, NULL, message);
 374         }
 375     }
 376 }
 377
 378 int register_command(int botid, char *name, cmd_bind_t *func, int paramcount, unsigned int flags, char *channel_access, int global_access) {
 379     struct cmd_function *cmdfunc;
 380     for(cmdfunc = cmd_functions; cmdfunc; cmdfunc = cmdfunc->next) {
 381         if(cmdfunc->botid == botid && strcmp(cmdfunc->name, name) == 0)
 382             return 0;
 383     }
 384     cmdfunc = malloc(sizeof(*cmdfunc));
 385     if (!cmdfunc) {
 386         perror("malloc() failed");
 387         return 0;
 388     }
 389     cmdfunc->botid = botid;
 390     cmdfunc->name = strdup(name);
 391     cmdfunc->func = func;
 392     cmdfunc->flags = flags;
 393     cmdfunc->paramcount = paramcount;
 394     cmdfunc->channel_access = channel_access;
 395     cmdfunc->global_access = global_access;
 396     cmdfunc->next = cmd_functions;
 397     cmd_functions = cmdfunc;
 398     return 1;
 399 }
 400
 401 int set_trigger_callback(int botid, trigger_callback_t *func) {
 402     static struct trigger_callback *cb = NULL;
 403     for(cb = trigger_callbacks; cb; cb = cb->next) {
 404         if(cb->botid == botid)
 405             break;
 406     }
 407     if(!cb) {
 408         cb = malloc(sizeof(*cb));
 409         if (!cb) {
 410             perror("malloc() failed");
 411             return 0;
 412         }
 413         cb->botid = botid;
 414         cb->next = trigger_callbacks;
 415         trigger_callbacks = cb;
 416     }
 417     cb->func = func;
 418     return 1;
 419 }
 420
 421 int changeChannelTrigger(int botid, struct ChanNode *chan, char *new_trigger) {
 422     struct trigger_cache *trigger;
 423     for(trigger = chan->trigger; trigger; trigger = trigger->next) {
 424         if(trigger->botid == botid) {
 425             free(trigger->trigger);
 426             trigger->trigger = strdup(new_trigger);
 427             return 1;
 428         }
 429     }
 430     return 0;
 431 }
 432
 433 int bind_cmd_to_function(int botid, char *cmd, struct cmd_function *func) {
 434     int bind_index = get_binds_index(cmd[0]);
 435     struct cmd_binding *cbind;
 436     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 437         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0)
 438             return 0;
 439     }
 440     cbind = malloc(sizeof(*cbind));
 441     if (!cbind) {
 442         perror("malloc() failed");
 443         return 0;
 444     }
 445     cbind->botid = botid;
 446     cbind->cmd = strdup(cmd);
 447     cbind->func = func;
 448     cbind->parameters = NULL;
 449     cbind->global_access = 0;
 450     cbind->channel_access = NULL;
 451     cbind->flags = 0;
 452     cbind->next = cmd_binds[bind_index];
 453     cmd_binds[bind_index] = cbind;
 454     return 1;
 455 }
 456
 457 int bind_cmd_to_command(int botid, char *cmd, char *func) {
 458     struct cmd_function *cmdfunc;
 459     for(cmdfunc = cmd_functions; cmdfunc; cmdfunc = cmdfunc->next) {
 460         if(cmdfunc->botid == botid && strcmp(cmdfunc->name, func) == 0)
 461             break;
 462     }
 463     if(!cmdfunc) return 0;
 464     int bind_index = get_binds_index(cmd[0]);
 465     struct cmd_binding *cbind;
 466     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 467         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0)
 468             return 0;
 469     }
 470     cbind = malloc(sizeof(*cbind));
 471     if (!cbind) {
 472         perror("malloc() failed");
 473         return 0;
 474     }
 475     cbind->botid = botid;
 476     cbind->cmd = strdup(cmd);
 477     cbind->func = cmdfunc;
 478     cbind->next = cmd_binds[bind_index];
 479     cbind->parameters = NULL;
 480     cbind->global_access = 0;
 481     cbind->channel_access = NULL;
 482     cbind->flags = 0;
 483     cmd_binds[bind_index] = cbind;
 484     return 1;
 485 }
 486
 487 int unbind_cmd(int botid, char *cmd) {
 488     int bind_index = get_binds_index(cmd[0]);
 489     struct cmd_binding *cbind, *last = NULL;
 490     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 491         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0) {
 492             if(last)
 493                 last->next = cbind->next;
 494             else
 495                 cmd_binds[bind_index] = cbind->next;
 496             free(cbind->cmd);
 497             if(cbind->parameters)
 498                 free(cbind->parameters);
 499             free(cbind);
 500             return 1;
 501         } else
 502             last = cbind;
 503     }
 504     return 0;
 505 }
 506
 507 struct ClientSocket *getTextBot() {
 508     return tmp_text_client;
 509 }
 510
 511 void init_modcmd() {
 512     cmd_binds = calloc(27, sizeof(*cmd_binds));
 513     bind_chanmsg(got_chanmsg);
 514     bind_privmsg(got_privmsg);
 515     register_default_language_table(msgtab);
 516 }
 517
 518 void free_modcmd() {
 519     int i;
 520     for(i = 0; i < 27; i++) {
 521         struct cmd_binding *cbind, *next;
 522         for(cbind = cmd_binds[i]; cbind; cbind = next) {
 523             next = cbind->next;
 524             free(cbind->cmd);
 525             if(cbind->parameters)
 526                 free(cbind->parameters);
 527             if(cbind->channel_access)
 528                 free(cbind->channel_access);
 529             free(cbind);
 530         }
 531     }
 532     free(cmd_binds);
 533     struct cmd_function *cmdfunct, *next;
 534     for(cmdfunct = cmd_functions; cmdfunct; cmdfunct = next) {
 535         next = cmdfunct->next;
 536         free(cmdfunct->name);
 537         free(cmdfunct);
 538     }
 539     struct trigger_callback *cb, *next_cb;
 540     for(cb = trigger_callbacks; cb; cb = next_cb) {
 541         next_cb = cb->next;
 542         free(next_cb);
 543     }
 544     cmd_functions = NULL;
 545     trigger_callbacks = NULL;
 546 }
 547
 548 void bind_set_parameters(int botid, char *cmd, char *parameters) {
 549     int bind_index = get_binds_index(cmd[0]);
 550     struct cmd_binding *cbind;
 551     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 552         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0) {
 553             if(cbind->parameters)
 554                 free(cbind->parameters);
 555             cbind->parameters = strdup(parameters);
 556             return;
 557         }
 558     }
 559 }
 560
 561 void bind_set_global_access(int botid, char *cmd, int gaccess) {
 562     int bind_index = get_binds_index(cmd[0]);
 563     struct cmd_binding *cbind;
 564     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 565         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0) {
 566             if(gaccess > -1) {
 567                 cbind->global_access = gaccess;
 568                 cbind->flags |= CMDFLAG_OVERRIDE_GLOBAL_ACCESS;
 569             } else {
 570                 cbind->flags &= ~CMDFLAG_OVERRIDE_GLOBAL_ACCESS;
 571             }
 572             return;
 573         }
 574     }
 575 }
 576
 577 void bind_set_channel_access(int botid, char *cmd, char *chanaccess) {
 578     int bind_index = get_binds_index(cmd[0]);
 579     struct cmd_binding *cbind;
 580     for(cbind = cmd_binds[bind_index]; cbind; cbind = cbind->next) {
 581         if(cbind->botid == botid && strcmp(cbind->cmd, cmd) == 0) {
 582             if(cbind->channel_access)
 583                 free(cbind->channel_access);
 584             if(chanaccess) {
 585                 cbind->channel_access = strdup(chanaccess);
 586                 cbind->flags |= CMDFLAG_OVERRIDE_CHANNEL_ACCESS;
 587             } else {
 588                 cbind->channel_access = NULL;
 589                 cbind->flags &= ~CMDFLAG_OVERRIDE_CHANNEL_ACCESS;
 590             }
 591             return;
 592         }
 593     }
 594 }