trusts/trusts_policy.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdarg.h>
   4 #include <unistd.h>
   5 #include <sys/types.h>
   6 #include <sys/socket.h>
   7 #include <netinet/in.h>
   8
   9 #ifndef __USE_MISC
  10 #define __USE_MISC /* inet_aton */
  11 #endif
  12
  13 #include <arpa/inet.h>
  14 #include <sys/un.h>
  15 #include <sys/poll.h>
  16 #include <errno.h>
  17 #include <fcntl.h>
  18
  19 #include "../lib/version.h"
  20 #include "../lib/hmac.h"
  21 #include "../core/events.h"
  22 #include "../core/schedule.h"
  23 #include "../core/nsmalloc.h"
  24 #include "../core/hooks.h"
  25 #include "../core/config.h"
  26 #include "../control/control.h"
  27 #include "../lib/irc_string.h"
  28 #include "../irc/irc.h"
  29 #include "../glines/glines.h"
  30 #include "trusts.h"
  31
  32 MODULE_VERSION("");
  33
  34 static int countext, enforcepolicy_irc, enforcepolicy_auth;
  35
  36 #define TRUSTBUFSIZE 8192
  37 #define TRUSTPASSLEN 128
  38 #define NONCELEN 16
  39
  40 typedef struct trustsocket {
  41   int fd;
  42   int authed;
  43   char authuser[SERVERLEN+1];
  44   char buf[TRUSTBUFSIZE];
  45   unsigned char nonce[NONCELEN];
  46   int size;
  47   time_t connected;
  48   time_t timeout;
  49   int accepted;
  50   int rejected;
  51
  52   struct trustsocket *next;
  53 } trustsocket;
  54
  55 static trustsocket *tslist;
  56 static int listenerfd = -1;
  57 static FILE *urandom;
  58
  59 typedef struct trustaccount {
  60   int used;
  61   char server[SERVERLEN+1];
  62   char password[TRUSTPASSLEN+1];
  63 } trustaccount;
  64
  65 trustaccount trustaccounts[MAXSERVERS];
  66
  67 static int checkconnectionth(const char *username, struct irc_in_addr *ip, trusthost *th, int hooknum, int usercountadjustment, char *message, size_t messagelen) {
  68   trustgroup *tg;
  69
  70   if(messagelen>0)
  71     message[0] = '\0';
  72
  73   if(!th || !trustsdbloaded)
  74     return POLICY_SUCCESS;
  75
  76   tg = th->group;
  77
  78   /*
  79    * the purpose of this logic is to avoid spam like this:
  80    * WARNING: tgX exceeded limit: 11 connected vs 10 max
  81    * (goes back down to 10)
  82    * WARNING: tgX exceeded limit: 11 connected vs 10 max
  83    */
  84
  85   if(hooknum == HOOK_TRUSTS_NEWNICK) {
  86     patricia_node_t *head, *node;
  87     int nodecount = 0;
  88
  89     head = refnode(iptree, ip, th->nodebits);
  90     PATRICIA_WALK(head, node)
  91     {
  92       nodecount += node->usercount;
  93     }
  94     PATRICIA_WALK_END;
  95     derefnode(iptree, head);
  96
  97     if(th->maxpernode && nodecount + usercountadjustment > th->maxpernode) {
  98       controlwall(NO_OPER, NL_CLONING, "Hard connection limit exceeded on subnet: %s (group: %s): %d connected, %d max.", CIDRtostr(*ip, th->nodebits), tg->name->content, nodecount + usercountadjustment, th->maxpernode);
  99       snprintf(message, messagelen, "Too many connections from your host (%s) - see https://www.quakenet.org/help/trusts/connection-limit for details.", IPtostr(*ip));
 100       return POLICY_FAILURE_NODECOUNT;
 101     }
 102
 103     if(tg->trustedfor && tg->count + usercountadjustment > tg->trustedfor) {
 104       if(tg->count > (long)tg->exts[countext]) {
 105         tg->exts[countext] = (void *)(long)tg->count;
 106
 107         controlwall(NO_OPER, NL_CLONING, "Hard connection limit exceeded (group %s): %d connected, %d max.", tg->name->content, tg->count + usercountadjustment, tg->trustedfor);
 108         snprintf(message, messagelen, "Too many connections from your trust (%s) - see https://www.quakenet.org/help/trusts/connection-limit for details.", IPtostr(*ip));
 109       }
 110
 111       snprintf(message, messagelen, "Too many connections from your trust (%s) - see https://www.quakenet.org/help/trusts/connection-limit for details.", IPtostr(*ip));
 112       return POLICY_FAILURE_GROUPCOUNT;
 113     }
 114
 115     if((tg->flags & TRUST_ENFORCE_IDENT) && (username[0] == '~')) {
 116       controlwall(NO_OPER, NL_CLONING, "Ident required: %s@%s (group: %s).", username, IPtostr(*ip), tg->name->content);
 117       snprintf(message, messagelen, "IDENTD required from your host (%s) - see https://www.quakenet.org/help/trusts/connection-limit for details.", IPtostr(*ip));
 118       return POLICY_FAILURE_IDENTD;
 119     }
 120
 121     if(tg->maxperident > 0) {
 122       int identcount = 0;
 123       trusthost *th2;
 124       nick *tnp;
 125
 126       for(th2=tg->hosts;th2;th2=th2->next) {
 127         for(tnp=th2->users;tnp;tnp=nextbytrust(tnp)) {
 128           if(!ircd_strcmp(tnp->ident, username))
 129             identcount++;
 130         }
 131       }
 132
 133       if(identcount + usercountadjustment > tg->maxperident) {
 134         controlwall(NO_OPER, NL_CLONING, "Hard ident limit exceeded: %s@%s (group: %s): %d connected, %d max.", username, IPtostr(*ip), tg->name->content, identcount + usercountadjustment, tg->maxperident);
 135         snprintf(message, messagelen, "Too many connections from your username (%s@%s) - see https://www.quakenet.org/help/trusts/connection-limit for details.", username, IPtostr(*ip));
 136         return POLICY_FAILURE_IDENTCOUNT;
 137       }
 138     }
 139   } else {
 140     if(tg->count < tg->maxusage)
 141       tg->exts[countext] = (void *)(long)tg->count;
 142   }
 143
 144   if(tg->trustedfor > 0)
 145     snprintf(message, messagelen, "Trust has %d out of %d allowed connections.", tg->count + usercountadjustment, tg->trustedfor);
 146
 147   return POLICY_SUCCESS;
 148 }
 149
 150 static int checkconnection(const char *username, struct irc_in_addr *ip, int hooknum, int cloneadjustment, char *message, size_t messagelen) {
 151   struct irc_in_addr ip_canonicalized;
 152   ip_canonicalize_tunnel(&ip_canonicalized, ip);
 153
 154   return checkconnectionth(username, &ip_canonicalized, th_getbyhost(&ip_canonicalized), hooknum, cloneadjustment, message, messagelen);
 155 }
 156
 157 static int trustdowrite(trustsocket *sock, char *format, ...) {
 158   char buf[1024];
 159   va_list va;
 160   int r;
 161
 162   va_start(va, format);
 163   r = vsnprintf(buf, sizeof(buf), format, va);
 164   va_end(va);
 165
 166   if(r >= sizeof(buf))
 167     r = sizeof(buf) - 1;
 168
 169   buf[r] = '\n';
 170
 171   if(write(sock->fd, buf, r + 1) != r + 1)
 172     return 0;
 173   return 1;
 174 }
 175
 176 static int policycheck_auth(trustsocket *sock, const char *sequence_id, const char *username, const char *host) {
 177   char message[512];
 178   int verdict;
 179   struct irc_in_addr ip;
 180   unsigned char bits;
 181
 182   if(!ipmask_parse(host, &ip, &bits)) {
 183     sock->accepted++;
 184     return trustdowrite(sock, "PASS %s", sequence_id);
 185   }
 186
 187   verdict = checkconnection(username, &ip, HOOK_TRUSTS_NEWNICK, 1, message, sizeof(message));
 188
 189   if(!enforcepolicy_auth)
 190     verdict = POLICY_SUCCESS;
 191
 192   if (verdict == POLICY_SUCCESS) {
 193     sock->accepted++;
 194
 195     if(message[0])
 196       return trustdowrite(sock, "PASS %s %s", sequence_id, message);
 197     else
 198       return trustdowrite(sock, "PASS %s", sequence_id);
 199   } else {
 200     sock->rejected++;
 201
 202     controlwall(NO_OPER, NL_CLONING, "Rejected connection from %s@%s using IAuth: %s", username, host, message);
 203     return trustdowrite(sock, "KILL %s %s", sequence_id, message);
 204   }
 205 }
 206
 207 static int trustkillconnection(trustsocket *sock, char *reason) {
 208   trustdowrite(sock, "QUIT %s", reason);
 209   return 0;
 210 }
 211
 212 static void trustfreeconnection(trustsocket *sock, int unlink) {
 213   trustsocket **pnext, *ts;
 214
 215   if(!unlink) {
 216     controlwall(NO_OPER, NL_TRUSTS, "Lost connection on policy socket for '%s'.", sock->authed?sock->authuser:"<unauthenticated connection>");
 217
 218     deregisterhandler(sock->fd, 1);
 219     nsfree(POOL_TRUSTS, sock);
 220     return;
 221   }
 222
 223   pnext = &tslist;
 224
 225   for(ts=*pnext;*pnext;pnext=&((*pnext)->next)) {
 226     if(ts == sock) {
 227       *pnext = sock->next;
 228       trustfreeconnection(sock, 0);
 229       break;
 230     }
 231   }
 232 }
 233
 234 static int handletrustauth(trustsocket *sock, char *server_name, char *mac) {
 235   int i;
 236   char *password = NULL;
 237   unsigned char digest[16];
 238   char noncehexbuf[NONCELEN * 2 + 1];
 239   char hexbuf[sizeof(digest) * 2 + 1];
 240
 241   for(i=0;i<MAXSERVERS;i++) {
 242     if(trustaccounts[i].used && strcmp(trustaccounts[i].server, server_name) == 0) {
 243       password = trustaccounts[i].password;
 244       break;
 245     }
 246   }
 247
 248   if (!password) {
 249     controlwall(NO_OPER, NL_TRUSTS, "Invalid servername for policy socket: '%s'", server_name);
 250     return trustkillconnection(sock, "Invalid servername.");
 251   }
 252
 253   hmacmd5 h;
 254   hmacmd5_init(&h, (unsigned char *)password, strlen(password));
 255   hmacmd5_update(&h, (unsigned char *)hmac_printhex(sock->nonce, noncehexbuf, NONCELEN), NONCELEN * 2);
 256   hmacmd5_final(&h, digest);
 257   if(hmac_strcmp(mac, hmac_printhex(digest, hexbuf, sizeof(digest)))) {
 258     controlwall(NO_OPER, NL_TRUSTS, "Invalid password for policy socket with servername '%s'.", server_name);
 259     return trustkillconnection(sock, "Bad MAC.");
 260   }
 261
 262   sock->authed = 1;
 263   strncpy(sock->authuser, server_name, SERVERLEN);
 264
 265   controlwall(NO_OPER, NL_TRUSTS, "Successful authentication for policy socket with servername '%s'.", server_name);
 266   return trustdowrite(sock, "AUTHOK");
 267 }
 268
 269 #define MAXTOKENS 10
 270 static int handletrustline(trustsocket *sock, char *line) {
 271   char *command, *p, *lastpos;
 272   char *tokens[MAXTOKENS];
 273   int tokensfound = -1;
 274
 275   for(command=lastpos=p=line;*p;p++) {
 276     if(*p == ' ') {
 277       *p = '\0';
 278       if(tokensfound == MAXTOKENS)
 279         return trustkillconnection(sock, "too many tokens");
 280
 281       if(tokensfound >= 0) {
 282         tokens[tokensfound++] = lastpos;
 283       } else {
 284         tokensfound++;
 285       }
 286       lastpos = p + 1;
 287     }
 288   }
 289   if(lastpos != p) {
 290     if(tokensfound == MAXTOKENS)
 291       return trustkillconnection(sock, "too many tokens");
 292     tokens[tokensfound++] = lastpos;
 293   }
 294
 295   if(!sock->authed && !strcmp("AUTH", command)) {
 296     if(tokensfound != 2)
 297       return trustkillconnection(sock, "incorrect arg count for command.");
 298
 299     return handletrustauth(sock, tokens[0], tokens[1]);
 300   } else if(sock->authed && !strcmp("CHECK", command)) {
 301     if(tokensfound != 3)
 302       return trustkillconnection(sock, "incorrect arg count for command.");
 303
 304     policycheck_auth(sock, tokens[0], tokens[1], tokens[2]);
 305     return 1;
 306   } else if(!strcmp("VERSION", command)) {
 307     /* Ignore this command for now. */
 308     return 1;
 309   } else {
 310     Error("trusts_policy", ERR_WARNING, "Bad command: %s", command);
 311     return 0;
 312   }
 313 }
 314
 315 static trustsocket *findtrustsocketbyfd(int fd) {
 316   for(trustsocket *ts=tslist;ts;ts=ts->next)
 317     if(ts->fd==fd)
 318       return ts;
 319
 320   return NULL;
 321 }
 322
 323 static int handletrustclient(trustsocket *sock) {
 324   int r, remaining = TRUSTBUFSIZE - sock->size, i;
 325   char *lastpos, *c;
 326
 327   if(!remaining) {
 328     trustkillconnection(sock, "Buffer overflow.");
 329     return 0;
 330   }
 331
 332   r = read(sock->fd, sock->buf + sock->size, remaining);
 333   if(r <= 0)
 334     return 0;
 335
 336   sock->size+=r;
 337   lastpos = sock->buf;
 338
 339   for(c=sock->buf,i=0;i<sock->size;i++,c++) {
 340     if(*c != '\n')
 341       continue;
 342     *c = '\0';
 343     if(!handletrustline(sock, lastpos))
 344       return 0;
 345
 346     lastpos = c + 1; /* is this ok? */
 347   }
 348   sock->size-=lastpos - sock->buf;
 349   memmove(sock->buf, lastpos, sock->size);
 350
 351   return 1;
 352 }
 353
 354 static void processtrustclient(int fd, short events) {
 355   trustsocket *sock = findtrustsocketbyfd(fd);
 356
 357   if(!sock)
 358     return;
 359
 360   if(events & POLLIN)
 361     if(!handletrustclient(sock))
 362       trustfreeconnection(sock, 1);
 363 }
 364
 365 static void trustdotimeout(void *arg) {
 366   time_t t = time(NULL);
 367   trustsocket **pnext, *sock;
 368
 369   pnext = &tslist;
 370
 371   for(sock=*pnext;*pnext;pnext=&((*pnext)->next)) {
 372     if(!sock->authed && t >= sock->timeout) {
 373       trustkillconnection(sock, "Auth timeout.");
 374       *pnext = sock->next;
 375       trustfreeconnection(sock, 0);
 376     }
 377   }
 378 }
 379
 380 static void processtrustlistener(int fd, short events) {
 381   if(events & POLLIN) {
 382     trustsocket *sock;
 383     char buf[NONCELEN * 2 + 1];
 384
 385     int newfd = accept(fd, NULL, NULL), flags;
 386     if(newfd == -1)
 387       return;
 388
 389     flags = fcntl(newfd, F_GETFL, 0);
 390     if(flags < 0) {
 391       Error("trusts_policy", ERR_WARNING, "Unable to set socket non-blocking.");
 392       close(newfd);
 393       return;
 394     }
 395
 396     if(fcntl(fd, F_SETFL, flags|O_NONBLOCK) < 0) {
 397       Error("trusts_policy", ERR_WARNING, "Unable to set socket non-blocking.");
 398       close(newfd);
 399       return;
 400     }
 401
 402     registerhandler(newfd, POLLIN|POLLERR|POLLHUP, processtrustclient);
 403
 404     sock = nsmalloc(POOL_TRUSTS, sizeof(trustsocket));
 405     if(!sock) {
 406       deregisterhandler(newfd, 1);
 407       return;
 408     }
 409
 410     sock->fd = newfd;
 411     sock->next = tslist;
 412     tslist = sock;
 413
 414     if(fread((char *)sock->nonce, 1, NONCELEN, urandom) != NONCELEN) {
 415       Error("trusts_policy", ERR_WARNING, "Error getting random bytes.");
 416       deregisterhandler(newfd, 1);
 417       tslist = sock->next;
 418       nsfree(POOL_TRUSTS, sock);
 419     } else {
 420       sock->authed = 0;
 421       sock->size = 0;
 422       sock->connected = time(NULL);
 423       sock->timeout = time(NULL) + 30;
 424       sock->accepted = 0;
 425       sock->rejected = 0;
 426       if(!trustdowrite(sock, "AUTH %s", hmac_printhex(sock->nonce, buf, NONCELEN))) {
 427         Error("trusts_policy", ERR_WARNING, "Error writing auth to fd %d.", newfd);
 428         deregisterhandler(newfd, 1);
 429         tslist = sock->next;
 430         nsfree(POOL_TRUSTS, sock);
 431         return;
 432       }
 433     }
 434   }
 435 }
 436
 437 static int createlistenersock(int port) {
 438   struct sockaddr_in s;
 439   int fd;
 440   int optval;
 441
 442   memset(&s, 0, sizeof(struct sockaddr_in));
 443   s.sin_family = AF_INET;
 444   s.sin_addr.s_addr = INADDR_ANY;
 445   s.sin_port = htons(port);
 446
 447   fd = socket(PF_INET, SOCK_STREAM, 0);
 448   if(fd < 0) {
 449     Error("trusts_policy", ERR_WARNING, "Unable to get socket for trustfd.");
 450     return -1;
 451   }
 452
 453   optval = 1;
 454   setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
 455
 456   if(bind(fd, (struct sockaddr *)&s, sizeof(struct sockaddr_in)) < 0) {
 457     Error("trusts_policy", ERR_WARNING, "Unable to bind trustfd.");
 458     close(fd);
 459     return -1;
 460   }
 461
 462   if(listen(fd, 5) < 0) {
 463     Error("trusts_policy", ERR_WARNING, "Unable to listen on trustfd.");
 464     close(fd);
 465     return -1;
 466   }
 467
 468   registerhandler(fd, POLLIN, processtrustlistener);
 469
 470   return fd;
 471 }
 472
 473 static void policycheck_irc(int hooknum, void *arg) {
 474   void **args = arg;
 475   nick *np = args[0];
 476   long moving = (long)args[1];
 477   char message[512];
 478   int verdict;
 479
 480   if(moving)
 481     return;
 482
 483   verdict = checkconnectionth(np->ident, &np->p_nodeaddr, gettrusthost(np), hooknum, 0, message, sizeof(message));
 484
 485   if(!enforcepolicy_irc)
 486     verdict = POLICY_SUCCESS;
 487
 488   switch (verdict) {
 489     case POLICY_FAILURE_NODECOUNT:
 490       glinebynick(np, POLICY_GLINE_DURATION, message, GLINE_IGNORE_TRUST, "trusts_policy");
 491       break;
 492     case POLICY_FAILURE_IDENTD:
 493       glinebyip("~*", &np->p_ipaddr, 128, POLICY_GLINE_DURATION, message, GLINE_ALWAYS_USER|GLINE_IGNORE_TRUST, "trusts_policy");
 494       break;
 495     case POLICY_FAILURE_IDENTCOUNT:
 496       glinebynick(np, POLICY_GLINE_DURATION, message, GLINE_ALWAYS_USER|GLINE_IGNORE_TRUST, "trusts_policy");
 497       break;
 498   }
 499 }
 500
 501 static int trusts_cmdtrustpolicyirc(void *source, int cargc, char **cargv) {
 502   nick *sender = source;
 503
 504   if(cargc < 1) {
 505     controlreply(sender, "Use of glines for trust policy enforcement is currently %s.", enforcepolicy_irc?"enabled":"disabled");
 506     return CMD_OK;
 507   }
 508
 509   enforcepolicy_irc = atoi(cargv[0]);
 510   controlwall(NO_OPER, NL_TRUSTS, "%s %s use of glines for trust policy enforcement.", controlid(sender), enforcepolicy_irc?"enabled":"disabled");
 511   controlreply(sender, "Use of glines for trust policy enforcement is now %s.", enforcepolicy_irc?"enabled":"disabled");
 512
 513   return CMD_OK;
 514 }
 515
 516 static int trusts_cmdtrustpolicyauth(void *source, int cargc, char **cargv) {
 517   nick *sender = source;
 518
 519   if(cargc < 1) {
 520     controlreply(sender, "Trust policy enforcement with IAuth is currently %s.", enforcepolicy_auth?"enabled":"disabled");
 521     return CMD_OK;
 522   }
 523
 524   enforcepolicy_auth = atoi(cargv[0]);
 525   controlwall(NO_OPER, NL_TRUSTS, "%s %s trust policy enforcement with IAuth.", controlid(sender), enforcepolicy_auth?"enabled":"disabled");
 526   controlreply(sender, "Trust policy enforcement with IAuth is now %s.", enforcepolicy_auth?"enabled":"disabled");
 527
 528   return CMD_OK;
 529 }
 530
 531
 532 static int trusts_cmdtrustsockets(void *source, int cargc, char **cargv) {
 533   nick *sender = source;
 534   time_t now;
 535   trustsocket *sock;
 536
 537   time(&now);
 538
 539   controlreply(sender, "Server                   Connected for             Accepted        Rejected");
 540
 541   for(sock=tslist;sock;sock=sock->next)
 542     controlreply(sender, "%-20s %20s %10d %15d", sock->authed?sock->authuser:"<unauthenticated connection>", longtoduration(now - sock->connected, 0), sock->accepted, sock->rejected);
 543
 544   controlreply(sender, "-- End of list.");
 545   return CMD_OK;
 546 }
 547
 548 void loadtrustaccounts(void) {
 549   array *accts;
 550
 551   memset(trustaccounts, 0, sizeof(trustaccounts));
 552
 553   accts = getconfigitems("trusts_policy", "server");
 554   if(!accts) {
 555     Error("trusts_policy", ERR_INFO, "No servers added.");
 556   } else {
 557     sstring **servers = (sstring **)(accts->content);
 558     int i;
 559     for(i=0;i<accts->cursi;i++) {
 560       char server[512];
 561       char *pos;
 562
 563       if(i>=MAXSERVERS) {
 564         Error("trusts_policy", ERR_INFO, "Too many servers specified.");
 565         break;
 566       }
 567
 568       strncpy(server, servers[i]->content, sizeof(server));
 569
 570       pos = strchr(server, ',');
 571
 572       if(!pos) {
 573         Error("trusts_policy", ERR_INFO, "Server line is missing password: %s", server);
 574         continue;
 575       }
 576
 577       *pos = '\0';
 578
 579       trustaccounts[i].used = 1;
 580       strncpy(trustaccounts[i].server, server, SERVERLEN);
 581       strncpy(trustaccounts[i].password, pos+1, TRUSTPASSLEN);
 582     }
 583   }
 584 }
 585
 586 static void trustaccounts_rehash(int hooknum, void *arg) {
 587   loadtrustaccounts();
 588 }
 589
 590 void _init(void) {
 591   sstring *m;
 592   int trustport;
 593
 594   countext = registertgext("count");
 595   if(countext == -1)
 596     return;
 597
 598   m = getconfigitem("trusts_policy", "enforcepolicy_irc");
 599   if(m)
 600     enforcepolicy_irc = atoi(m->content);
 601
 602   m = getconfigitem("trusts_policy", "enforcepolicy_auth");
 603   if(m)
 604     enforcepolicy_auth = atoi(m->content);
 605
 606   m = getconfigitem("trusts_policy", "trustport");
 607   if(m)
 608     trustport = atoi(m->content);
 609   else
 610     trustport = DEFAULT_TRUSTPORT;
 611
 612   if(trustport)
 613     listenerfd = createlistenersock(trustport);
 614
 615   loadtrustaccounts();
 616
 617   registerhook(HOOK_TRUSTS_NEWNICK, policycheck_irc);
 618   registerhook(HOOK_TRUSTS_LOSTNICK, &policycheck_irc);
 619   registerhook(HOOK_CORE_REHASH, trustaccounts_rehash);
 620
 621   registercontrolhelpcmd("trustpolicyirc", NO_DEVELOPER, 1, trusts_cmdtrustpolicyirc, "Usage: trustpolicyirc ?1|0?\nEnables or disables policy enforcement (IRC). Shows current status when no parameter is specified.");
 622   registercontrolhelpcmd("trustpolicyauth", NO_DEVELOPER, 1, trusts_cmdtrustpolicyauth, "Usage: trustpolicyauth ?1|0?\nEnables or disables policy enforcement (IAuth). Shows current status when no parameter is specified.");
 623   registercontrolhelpcmd("trustsockets", NO_DEVELOPER, 0, trusts_cmdtrustsockets, "Usage: trustsockets\nLists all currently active TRUST sockets.");
 624
 625   schedulerecurring(time(NULL)+1, 0, 5, trustdotimeout, NULL);
 626
 627   urandom = fopen("/dev/urandom", "rb");
 628   if(!urandom)
 629     Error("trusts_policy", ERR_ERROR, "Couldn't open /dev/urandom.");
 630 }
 631
 632 void _fini(void) {
 633   trustsocket *sock, *next;
 634
 635   if(countext == -1)
 636     return;
 637
 638   releasetgext(countext);
 639
 640   deregisterhook(HOOK_TRUSTS_NEWNICK, policycheck_irc);
 641   deregisterhook(HOOK_TRUSTS_LOSTNICK, policycheck_irc);
 642   deregisterhook(HOOK_CORE_REHASH, trustaccounts_rehash);
 643
 644   deregistercontrolcmd("trustpolicyirc", trusts_cmdtrustpolicyirc);
 645   deregistercontrolcmd("trustpolicyauth", trusts_cmdtrustpolicyauth);
 646   deregistercontrolcmd("trustsockets", trusts_cmdtrustsockets);
 647
 648   deleteallschedules(trustdotimeout);
 649
 650   if (urandom)
 651     fclose(urandom);
 652
 653   if (listenerfd != -1)
 654     deregisterhandler(listenerfd, 1);
 655
 656   for(sock=tslist;sock;) {
 657     next = sock->next;
 658
 659     trustkillconnection(sock, "Unloading module.");
 660     trustfreeconnection(sock, 0);
 661
 662     sock = next;
 663   }
 664 }