trusts/trusts_management.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../control/control.h"
   4 #include "../lib/version.h"
   5 #include "../lib/irc_string.h"
   6 #include "../lib/strlfunc.h"
   7 #include "../core/config.h"
   8 #include "../core/schedule.h"
   9 #include "../irc/irc.h"
  10 #include "../lib/stringbuf.h"
  11 #include "../noperserv/noperserv.h"
  12 #include "../noperserv/noperserv_policy.h"
  13 #include "trusts.h"
  14
  15 MODULE_VERSION("");
  16
  17 static void registercommands(int, void *);
  18 static void deregistercommands(int, void *);
  19
  20 typedef int (*trustmodificationfn)(void *, char *arg, nick *, int);
  21
  22 struct trustmodification {
  23   char name[50];
  24   trustmodificationfn fn;
  25 };
  26
  27 static int trusts_cmdtrustadd(void *source, int cargc, char **cargv) {
  28   trustgroup *tg;
  29   nick *sender = source;
  30   char *host;
  31   struct irc_in_addr ip;
  32   unsigned char bits;
  33   trusthost *th, *superset, *subset;
  34
  35   if(cargc < 2)
  36     return CMD_USAGE;
  37
  38   tg = tg_strtotg(cargv[0]);
  39   if(!tg) {
  40     controlreply(sender, "Couldn't look up trustgroup.");
  41     return CMD_ERROR;
  42   }
  43
  44   host = cargv[1];
  45   if(!ipmask_parse(host, &ip, &bits)) {
  46     controlreply(sender, "Invalid host.");
  47     return CMD_ERROR;
  48   }
  49
  50   if(!is_normalized_ipmask(&ip, bits)) {
  51     controlreply(sender, "Invalid IP Mask.");
  52     return CMD_ERROR;
  53   }
  54
  55   /* Don't allow non-developers to add trusts for large subnets or modify protected groups. */
  56   if (!noperserv_policy_command_permitted(NO_DEVELOPER, sender)) {
  57     int minbits = irc_in_addr_is_ipv4(&ip)?TRUST_MIN_UNPRIVILEGED_BITS_IPV4:TRUST_MIN_UNPRIVILEGED_BITS_IPV6;
  58     if(bits < minbits) {
  59       controlreply(sender, "You don't have the necessary privileges to add a subnet larger than /%d.", irc_bitlen(&ip, minbits));
  60       return CMD_ERROR;
  61     }
  62
  63     if(tg->flags & TRUST_PROTECTED) {
  64       controlreply(sender, "You don't have the necessary privileges to modify a protected trust group.");
  65       return CMD_ERROR;
  66     }
  67   }
  68
  69   /* OKAY! Lots of checking here!
  70    *
  71    * Need to check:
  72    *   - host isn't already covered by given group (reject if it is)
  73    *   - host doesn't already exist exactly already (reject if it does)
  74    *   - host is more specific than an existing one (warn if it is, fix up later)
  75    *   - host is less specific than an existing one (warn if it is, don't need to do anything special)
  76    */
  77
  78   for(th=tg->hosts;th;th=th->next) {
  79     if(ipmask_check(&ip, &th->ip, th->bits)) {
  80       controlreply(sender, "This host (or part of it) is already covered in the given group.");
  81       return CMD_ERROR;
  82     }
  83   }
  84
  85   if(th_getbyhostandmask(&ip, bits)) {
  86     controlreply(sender, "This host already exists in another group with the same mask.");
  87     return CMD_ERROR;
  88   }
  89
  90   /* this function will set both to NULL if it's equal, hence the check above */
  91   th_getsuperandsubsets(&ip, bits, &superset, &subset);
  92   if(superset) {
  93     /* a superset exists for us, we will be more specific than one existing host */
  94
  95     controlreply(sender, "Note: This host already exists in another group, but this new host will override it as it has a smaller prefix.");
  96   }
  97   if(subset) {
  98     /* a subset of us exists, we will be less specific than some existing hosts */
  99
 100     controlreply(sender, "Note: This host already exists in at least one other group, the new host has a larger prefix and therefore will not override those hosts.");
 101   }
 102
 103   th = th_new(tg, host);
 104   if(!th) {
 105     controlreply(sender, "An error occured adding the host to the group.");
 106     return CMD_ERROR;
 107   }
 108
 109   controlreply(sender, "Host added.");
 110   triggerhook(HOOK_TRUSTS_ADDHOST, th);
 111
 112   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTADD'ed host %s to group '%s'", controlid(sender), host, th->group->name->content);
 113   trustlog(tg, sender->authname, "Added host '%s'.", host);
 114
 115   return CMD_OK;
 116 }
 117
 118 static int trusts_cmdtrustgroupadd(void *source, int cargc, char **cargv) {
 119   nick *sender = source;
 120   char *name, *contact, *comment, createdby[ACCOUNTLEN + 2];
 121   long howmany, maxperident, enforceident;
 122   trustgroup *tg, itg;
 123   int override, flags;
 124
 125   if(cargc < 5)
 126     return CMD_USAGE;
 127
 128   override = noperserv_policy_command_permitted(NO_DEVELOPER, sender);
 129
 130   name = cargv[0];
 131   howmany = strtol(cargv[1], NULL, 10);
 132   if(!override && (!howmany || (howmany > MAXTRUSTEDFOR))) {
 133     controlreply(sender, "Bad value maximum number of clients.");
 134     return CMD_ERROR;
 135   }
 136
 137   maxperident = strtol(cargv[2], NULL, 10);
 138   if(maxperident < 0 || (maxperident > MAXPERIDENT)) {
 139     controlreply(sender, "Bad value for max per ident.");
 140     return CMD_ERROR;
 141   }
 142
 143   if(cargv[3][0] != '1' && cargv[3][0] != '0') {
 144     controlreply(sender, "Bad value for enforce ident (use 0 or 1).");
 145     return CMD_ERROR;
 146   }
 147   enforceident = cargv[3][0] == '1';
 148
 149   contact = cargv[4];
 150
 151   if(cargc < 6) {
 152     comment = "(no comment)";
 153   } else {
 154     comment = cargv[5];
 155   }
 156
 157   /* don't allow #id or id forms */
 158   if((name[0] == '#') || strtol(name, NULL, 10)) {
 159     controlreply(sender, "Invalid trustgroup name.");
 160     return CMD_ERROR;
 161   }
 162
 163   tg = tg_strtotg(name);
 164   if(tg) {
 165     controlreply(sender, "A group with that name already exists.");
 166     return CMD_ERROR;
 167   }
 168
 169   snprintf(createdby, sizeof(createdby), "#%s", sender->authname);
 170
 171   flags = 0;
 172
 173   if(maxperident > 0)
 174     flags |= TRUST_RELIABLE_USERNAME;
 175
 176   if(enforceident)
 177     flags |= TRUST_ENFORCE_IDENT;
 178
 179   itg.trustedfor = howmany;
 180   itg.flags = flags;
 181   itg.maxperident = maxperident;
 182   itg.expires = 0;
 183   itg.createdby = getsstring(createdby, CREATEDBYLEN);
 184   itg.contact = getsstring(contact, CONTACTLEN);
 185   itg.comment = getsstring(comment, COMMENTLEN);
 186   itg.name = getsstring(name, TRUSTNAMELEN);
 187
 188   if(itg.createdby && itg.contact && itg.comment && itg.name) {
 189     tg = tg_new(&itg);
 190   } else {
 191     tg = NULL;
 192   }
 193
 194   freesstring(itg.createdby);
 195   freesstring(itg.comment);
 196   freesstring(itg.name);
 197   freesstring(itg.contact);
 198
 199   if(!tg) {
 200     controlreply(sender, "An error occured adding the trustgroup.");
 201     return CMD_ERROR;
 202   }
 203
 204   controlreply(sender, "Group added.");
 205   triggerhook(HOOK_TRUSTS_ADDGROUP, tg);
 206
 207   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTGROUPADD'ed '%s'", controlid(sender), tg->name->content);
 208   trustlog(tg, sender->authname, "Created trust group '%s' (ID #%d): howmany=%d, enforceident=%d, maxperident=%d, "
 209     "createdby=%s, contact=%s, comment=%s",
 210     tg->name->content, howmany, tg->id, enforceident, maxperident, createdby, contact, comment);
 211
 212   return CMD_OK;
 213 }
 214
 215 static int trusts_cmdtrustgroupdel(void *source, int cargc, char **cargv) {
 216   trustgroup *tg;
 217   nick *sender = source;
 218
 219   if(cargc < 1)
 220     return CMD_USAGE;
 221
 222   tg = tg_strtotg(cargv[0]);
 223   if(!tg) {
 224     controlreply(sender, "Couldn't look up trustgroup.");
 225     return CMD_ERROR;
 226   }
 227
 228   /* Don't allow non-developers to delete protected groups. */
 229   if (!noperserv_policy_command_permitted(NO_DEVELOPER, sender)) {
 230     if(tg->flags & TRUST_PROTECTED) {
 231       controlreply(sender, "You don't have the necessary privileges to modify a protected trust group.");
 232       return CMD_ERROR;
 233     }
 234   }
 235
 236   if(tg->hosts) {
 237     controlreply(sender, "Delete all hosts before deleting the group.");
 238     return CMD_ERROR;
 239   }
 240
 241   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTGROUPDEL'ed '%s'.", controlid(sender), tg->name->content);
 242   trustlog(tg, sender->authname, "Deleted group '%s'.", tg->name->content);
 243
 244   triggerhook(HOOK_TRUSTS_DELGROUP, tg);
 245   tg_delete(tg);
 246   controlreply(sender, "Group deleted.");
 247
 248   return CMD_OK;
 249 }
 250
 251 static int trusts_cmdtrustdel(void *source, int cargc, char **cargv) {
 252   trustgroup *tg;
 253   trusthost *th;
 254   struct irc_in_addr ip;
 255   unsigned char bits;
 256   nick *sender = source;
 257   char *host;
 258
 259   if(cargc < 2)
 260     return CMD_USAGE;
 261
 262   tg = tg_strtotg(cargv[0]);
 263   if(!tg) {
 264     controlreply(sender, "Couldn't look up trustgroup.");
 265     return CMD_ERROR;
 266   }
 267
 268   host = cargv[1];
 269   if(!ipmask_parse(host, &ip, &bits)) {
 270     controlreply(sender, "Invalid IP/mask.");
 271     return CMD_ERROR;
 272   }
 273
 274   /* Don't allow non-developers to remove trusts for large subnets or modify protected groups. */
 275   if (!noperserv_policy_command_permitted(NO_DEVELOPER, sender)) {
 276     int minbits = irc_in_addr_is_ipv4(&ip)?TRUST_MIN_UNPRIVILEGED_BITS_IPV4:TRUST_MIN_UNPRIVILEGED_BITS_IPV6;
 277     if(bits < minbits) {
 278       controlreply(sender, "You don't have the necessary privileges to remove a subnet larger than /%d.", irc_bitlen(&ip, minbits));
 279       return CMD_ERROR;
 280     }
 281
 282     if(tg->flags & TRUST_PROTECTED) {
 283       controlreply(sender, "You don't have the necessary privileges to modify a protected trust group.");
 284       return CMD_ERROR;
 285     }
 286   }
 287
 288   for(th=tg->hosts;th;th=th->next)
 289     if(ipmask_check(&ip, &th->ip, th->bits) && th->bits == bits)
 290       break;
 291
 292   if(!th) {
 293     controlreply(sender, "Couldn't find that host in that group.");
 294     return CMD_ERROR;
 295   }
 296
 297   triggerhook(HOOK_TRUSTS_DELHOST, th);
 298   th_delete(th);
 299   controlreply(sender, "Host deleted.");
 300
 301   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTDEL'ed %s from group '%s'.", controlid(sender), host, tg->name->content);
 302   trustlog(tg, sender->authname, "Removed host '%s'.", host);
 303
 304   return CMD_OK;
 305 }
 306
 307 static int modifycomment(void *arg, char *comment, nick *source, int override) {
 308   trustgroup *tg = arg;
 309   sstring *n = getsstring(comment, COMMENTLEN);
 310   if(!n)
 311     return 0;
 312
 313   freesstring(tg->comment);
 314   tg->comment = n;
 315
 316   return 1;
 317 }
 318
 319 static int modifycontact(void *arg, char *contact, nick *source, int override) {
 320   trustgroup *tg = arg;
 321   sstring *n = getsstring(contact, CONTACTLEN);
 322   if(!n)
 323     return 0;
 324
 325   freesstring(tg->contact);
 326   tg->contact = n;
 327
 328   return 1;
 329 }
 330
 331 static int modifytrustedfor(void *arg, char *num, nick *source, int override) {
 332   trustgroup *tg = arg;
 333   long trustedfor = strtol(num, NULL, 10);
 334
 335   if(trustedfor < 0) {
 336     controlreply(source, "The clone limit must not be negative.");
 337     return 0;
 338   }
 339
 340   if(!override) {
 341     if (trustedfor == 0) {
 342       controlreply(source, "You don't have the necessary privileges to set an unlimited clone limit.");
 343       return 0;
 344     }
 345
 346     if (trustedfor > MAXTRUSTEDFOR) {
 347       controlreply(source, "You don't have the necessary privileges to set the clone limit to a value higher than %d.", MAXTRUSTEDFOR);
 348       return 0;
 349     }
 350   }
 351
 352   tg->trustedfor = trustedfor;
 353
 354   return 1;
 355 }
 356
 357 static int modifymaxperident(void *arg, char *num, nick *source, int override) {
 358   trustgroup *tg = arg;
 359   long maxperident = strtol(num, NULL, 10);
 360
 361   if(maxperident < 0) {
 362     controlreply(source, "Ident limit must not be negative.");
 363     return 0;
 364   }
 365
 366   if(maxperident > MAXPERIDENT) {
 367     controlreply(source, "Ident limit must not be higher than %d. Consider setting it to 0 (unlimited) instead.", MAXPERIDENT);
 368     return 0;
 369   }
 370
 371   tg->maxperident = maxperident;
 372
 373   return 1;
 374 }
 375
 376 static int modifyenforceident(void *arg, char *num, nick *source, int override) {
 377   trustgroup *tg = arg;
 378
 379   if(num[0] == '1') {
 380     tg->flags |= TRUST_ENFORCE_IDENT;
 381   } else if(num[0] == '0') {
 382     tg->flags &= ~TRUST_ENFORCE_IDENT;
 383   } else {
 384     return 0;
 385   }
 386
 387   return 1;
 388 }
 389
 390 static int modifyreliableusername(void *arg, char *num, nick *source, int override) {
 391   trustgroup *tg = arg;
 392
 393   if(num[0] == '1') {
 394     tg->flags |= TRUST_RELIABLE_USERNAME;
 395   } else if(num[0] == '0') {
 396     tg->flags &= ~TRUST_RELIABLE_USERNAME;
 397   } else {
 398     return 0;
 399   }
 400
 401   return 1;
 402 }
 403
 404 static int modifyexpires(void *arg, char *expires, nick *source, int override) {
 405   trustgroup *tg = arg;
 406   int howlong = durationtolong(expires);
 407
 408   if((howlong < 0) || (howlong > MAXDURATION)) {
 409     controlreply(source, "Duration cannot be negative or greater than %s (use 0 instead if you don't want the group to expire).", longtoduration(MAXDURATION, 0));
 410     return 0;
 411   }
 412
 413   if(howlong)
 414     tg->expires = getnettime() + howlong;
 415   else
 416     tg->expires = 0; /* never */
 417
 418   return 1;
 419 }
 420
 421 static int modifycleanup(void *arg, char *num, nick *source, int override) {
 422   trustgroup *tg = arg;
 423
 424   if(!override) {
 425     controlreply(source, "You don't have the necessary privileges to modify this attribute.");
 426     return 0;
 427   }
 428
 429   if(num[0] == '1') {
 430     tg->flags &= ~TRUST_NO_CLEANUP;
 431   } else if(num[0] == '0') {
 432     tg->flags |= TRUST_NO_CLEANUP;
 433   } else {
 434     return 0;
 435   }
 436
 437   return 1;
 438 }
 439
 440 static int modifyprotected(void *arg, char *num, nick *source, int override) {
 441   trustgroup *tg = arg;
 442
 443   if(!override) {
 444     controlreply(source, "You don't have the necessary privileges to modify this attribute.");
 445     return 0;
 446   }
 447
 448   if(num[0] == '1') {
 449     tg->flags |= TRUST_PROTECTED;
 450   } else if(num[0] == '0') {
 451     tg->flags &= ~TRUST_PROTECTED;
 452   } else {
 453     return 0;
 454   }
 455
 456   return 1;
 457 }
 458
 459 static int modifymaxpernode(void *arg, char *num, nick *source, int override) {
 460   trusthost *th = arg;
 461   int maxpernode = strtol(num, NULL, 10);
 462
 463   if(maxpernode < 0) {
 464     controlreply(source, "Node limit must not be negative.");
 465     return 0;
 466   }
 467
 468   if(maxpernode>MAXPERNODE) {
 469     controlreply(source, "Node limit must not be higher than %d. Consider setting it to 0 (unlimited) instead.", MAXPERNODE);
 470     return 0;
 471   }
 472
 473   th->maxpernode = maxpernode;
 474
 475   return 1;
 476 }
 477
 478 static int modifynodebits(void *arg, char *num, nick *source, int override) {
 479   trusthost *th = arg;
 480   int nodebits = strtol(num, NULL, 10);
 481
 482   if(nodebits < 0) {
 483     controlreply(source, "Node bits must not be negative.");
 484     return 0;
 485   }
 486
 487   if(irc_in_addr_is_ipv4(&th->ip))
 488     nodebits += 96;
 489
 490   if(nodebits > 128) {
 491     controlreply(source, "Node bits is invalid.");
 492     return 0;
 493   }
 494
 495   if(!override) {
 496     int minbits = irc_in_addr_is_ipv4(&th->ip)?TRUST_MIN_UNPRIVILEGED_NODEBITS_IPV4:TRUST_MIN_UNPRIVILEGED_NODEBITS_IPV6;
 497
 498     if(nodebits < minbits) {
 499       controlreply(source, "You don't have the necessary privileges to set node bits to a subnet larger than /%d.", irc_bitlen(&th->ip, minbits));
 500       return 0;
 501     }
 502   }
 503
 504   if(nodebits<th->bits) {
 505     controlreply(source, "Node bits must be smaller or equal to the trusted CIDR's subnet size.");
 506     return 0;
 507   }
 508
 509   th->nodebits = nodebits;
 510
 511   return 1;
 512 }
 513
 514 static array trustgroupmods_a;
 515 static struct trustmodification *trustgroupmods;
 516 static array trusthostmods_a;
 517 static struct trustmodification *trusthostmods;
 518
 519 static int trusts_cmdtrustgroupmodify(void *source, int cargc, char **cargv) {
 520   trustgroup *tg;
 521   nick *sender = source;
 522   char *what, *to;
 523   int i, override;
 524
 525   if(cargc < 3)
 526     return CMD_USAGE;
 527
 528   tg = tg_strtotg(cargv[0]);
 529   if(!tg) {
 530     controlreply(sender, "Couldn't look up trustgroup.");
 531     return CMD_ERROR;
 532   }
 533
 534   what = cargv[1];
 535   to = cargv[2];
 536
 537   override = noperserv_policy_command_permitted(NO_DEVELOPER, sender);
 538
 539   /* Don't allow non-developers to modify protected groups. */
 540   if (!override && tg->flags & TRUST_PROTECTED) {
 541     controlreply(sender, "You don't have the necessary privileges to modify a protected trust group.");
 542     return CMD_ERROR;
 543   }
 544
 545   for(i=0;i<trustgroupmods_a.cursi;i++) {
 546     if(!strcmp(what, trustgroupmods[i].name)) {
 547       if(!(trustgroupmods[i].fn)(tg, to, sender, override)) {
 548         controlreply(sender, "An error occured changing that property, check the syntax.");
 549         return CMD_ERROR;
 550       }
 551       break;
 552     }
 553   }
 554
 555   if(i == trustgroupmods_a.cursi)
 556     return CMD_USAGE;
 557
 558   triggerhook(HOOK_TRUSTS_MODIFYGROUP, tg);
 559   tg_update(tg);
 560   controlreply(sender, "Group modified.");
 561
 562   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTMODIFIED'ed group '%s' (field: %s, value: %s)", controlid(sender), tg->name->content, what, to);
 563   trustlog(tg, sender->authname, "Modified %s: %s", what, to);
 564
 565   return CMD_OK;
 566 }
 567
 568 static int trusts_cmdtrusthostmodify(void *source, int cargc, char **cargv) {
 569   trustgroup *tg;
 570   trusthost *th;
 571   nick *sender = source;
 572   char *what, *to;
 573   int i, override;
 574   struct irc_in_addr ip;
 575   unsigned char bits;
 576
 577   if(cargc < 4)
 578     return CMD_USAGE;
 579
 580   tg = tg_strtotg(cargv[0]);
 581   if(!tg) {
 582     controlreply(sender, "Couldn't look up trustgroup.");
 583     return CMD_ERROR;
 584   }
 585
 586   if(!ipmask_parse(cargv[1], &ip, &bits)) {
 587     controlreply(sender, "Invalid host.");
 588     return CMD_ERROR;
 589   }
 590
 591   /* Don't allow non-developers to modify trusts for large subnets or modify protected groups. */
 592   if (!noperserv_policy_command_permitted(NO_DEVELOPER, sender)) {
 593     int minbits = irc_in_addr_is_ipv4(&ip)?TRUST_MIN_UNPRIVILEGED_BITS_IPV4:TRUST_MIN_UNPRIVILEGED_BITS_IPV6;
 594     if(bits < minbits) {
 595       controlreply(sender, "You don't have the necessary privileges to modify a subnet larger than /%d.", irc_bitlen(&ip, minbits));
 596       return CMD_ERROR;
 597     }
 598
 599     if(tg->flags & TRUST_PROTECTED) {
 600       controlreply(sender, "You don't have the necessary privileges to modify a protected trust group.");
 601       return CMD_ERROR;
 602     }
 603   }
 604
 605   th = th_getbyhostandmask(&ip, bits);
 606
 607   if(!th || th->group != tg) {
 608     controlreply(sender, "Host does not belong to the specified group.");
 609     return CMD_ERROR;
 610   }
 611
 612   what = cargv[2];
 613   to = cargv[3];
 614
 615   override = noperserv_policy_command_permitted(NO_DEVELOPER, sender);
 616
 617   for(i=0;i<trusthostmods_a.cursi;i++) {
 618     if(!strcmp(what, trusthostmods[i].name)) {
 619       if(!(trusthostmods[i].fn)(th, to, sender, override)) {
 620         controlreply(sender, "An error occured changing that property, check the syntax.");
 621         return CMD_ERROR;
 622       }
 623       break;
 624     }
 625   }
 626
 627   if(i == trusthostmods_a.cursi)
 628     return CMD_USAGE;
 629
 630   triggerhook(HOOK_TRUSTS_MODIFYHOST, th);
 631   th_update(th);
 632   controlreply(sender, "Host modified.");
 633
 634   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTMODIFIED'ed host '%s' in group '%s' (field: %s, value: %s)", controlid(sender), CIDRtostr(ip, bits), tg->name->content, what, to);
 635   trustlog(tg, sender->authname, "Modified %s for host '%s': %s", what, CIDRtostr(ip, bits), to);
 636
 637   return CMD_OK;
 638 }
 639
 640 static int trusts_cmdtrustlog(void *source, int cargc, char **cargv) {
 641   nick *sender = source;
 642   char *name;
 643   int groupid;
 644   long limit = 0;
 645
 646   if(cargc < 1)
 647     return CMD_USAGE;
 648
 649   if(cargc>1)
 650     limit = strtol(cargv[1], NULL, 10);
 651
 652   if(limit==0)
 653     limit = 100;
 654
 655   name = cargv[0];
 656
 657   if (name[0] == '#') {
 658     groupid = strtol(name + 1, NULL, 10);
 659     trustlogspewid(sender, groupid, limit);
 660   } else {
 661     trustlogspewname(sender, name, limit);
 662   }
 663
 664   return CMD_OK;
 665 }
 666
 667 static int trusts_cmdtrustloggrep(void *source, int cargc, char **cargv) {
 668   nick *sender = source;
 669   char *pattern;
 670   long limit = 0;
 671
 672   if(cargc < 1)
 673     return CMD_USAGE;
 674
 675   pattern = cargv[0];
 676
 677   if(cargc>1)
 678     limit = strtol(cargv[1], NULL, 10);
 679
 680   if(limit==0)
 681     limit = 100;
 682
 683   trustloggrep(sender, pattern, limit);
 684
 685   return CMD_OK;
 686 }
 687
 688 static int trusts_cmdtrustcomment(void *source, int cargc, char **cargv) {
 689   nick *sender = source;
 690   trustgroup *tg = NULL;
 691   char *name, *comment;
 692
 693   if(cargc < 2)
 694     return CMD_USAGE;
 695
 696   name = cargv[0];
 697   comment = cargv[1];
 698
 699   if(strlen(comment)>TRUSTLOGLEN) {
 700     controlreply(sender, "Your comment is too long (max: %d characters).", TRUSTLOGLEN);
 701     return CMD_OK;
 702   }
 703
 704   tg = tg_strtotg(name);
 705
 706   if(!tg) {
 707     controlreply(sender, "Invalid trust group name or ID.");
 708     return CMD_OK;
 709   }
 710
 711   controlwall(NO_OPER, NL_TRUSTS, "%s TRUSTCOMMENT'ed group '%s': %s", controlid(sender), tg->name->content, comment);
 712   trustlog(tg, sender->authname, "Comment: %s", comment);
 713
 714   return CMD_OK;
 715 }
 716
 717 static void cleanuptrusts(void *arg);
 718
 719 static int trusts_cmdtrustcleanup(void *source, int cargc, char **cargv) {
 720   cleanuptrusts(source);
 721
 722   controlreply(source, "Done.");
 723
 724   return CMD_OK;
 725 }
 726
 727
 728 static int commandsregistered;
 729
 730 static void registercommands(int hooknum, void *arg) {
 731   static char tgmhelp[512], thmhelp[512];
 732   char validfields[512];
 733   StringBuf b;
 734   int i;
 735
 736   if(commandsregistered)
 737     return;
 738   commandsregistered = 1;
 739
 740   registercontrolhelpcmd("trustgroupadd", NO_OPER, 6, trusts_cmdtrustgroupadd, "Usage: trustgroupadd <name> <howmany> <maxperident> <enforceident> <contact> ?comment?");
 741   registercontrolhelpcmd("trustadd", NO_OPER, 2, trusts_cmdtrustadd, "Usage: trustadd <#id|name|id> <host>");
 742   registercontrolhelpcmd("trustgroupdel", NO_OPER, 1, trusts_cmdtrustgroupdel, "Usage: trustgroupdel <#id|name|id>");
 743   registercontrolhelpcmd("trustdel", NO_OPER, 2, trusts_cmdtrustdel, "Usage: trustdel <#id|name|id> <ip/mask>");
 744
 745   sbinit(&b, validfields, sizeof(validfields));
 746   for(i=0;i<trustgroupmods_a.cursi;i++) {
 747     if(i > 0)
 748       sbaddstr(&b, ", ");
 749     sbaddstr(&b, trustgroupmods[i].name);
 750   }
 751   sbterminate(&b);
 752
 753   snprintf(tgmhelp, sizeof(tgmhelp), "Usage: trustgroupmodify <#id|name|id> <field> <new value>\nModifies a trust group.\nValid fields: %s", validfields);
 754   registercontrolhelpcmd("trustgroupmodify", NO_OPER, 3, trusts_cmdtrustgroupmodify, tgmhelp);
 755
 756   sbinit(&b, validfields, sizeof(validfields));
 757   for(i=0;i<trusthostmods_a.cursi;i++) {
 758     if(i > 0)
 759       sbaddstr(&b, ", ");
 760     sbaddstr(&b, trusthostmods[i].name);
 761   }
 762   sbterminate(&b);
 763
 764   snprintf(thmhelp, sizeof(thmhelp), "Usage: trusthostmodify <#id|name|id> <host> <field> <new value>\nModifies a trust host\nValid fields: %s", validfields);
 765   registercontrolhelpcmd("trusthostmodify", NO_OPER, 4, trusts_cmdtrusthostmodify, thmhelp);
 766
 767   registercontrolhelpcmd("trustlog", NO_OPER, 2, trusts_cmdtrustlog, "Usage: trustlog <#id|name> ?limit?\nShows log for the specified trust group.");
 768   registercontrolhelpcmd("trustloggrep", NO_OPER, 2, trusts_cmdtrustloggrep, "Usage trustloggrep <pattern> ?limit?\nShows maching log entries.");
 769   registercontrolhelpcmd("trustcomment", NO_OPER, 2, trusts_cmdtrustcomment, "Usage: trustcomment <#id|name> <comment>\nLogs a comment for a trust.");
 770   registercontrolhelpcmd("trustcleanup", NO_DEVELOPER, 0, trusts_cmdtrustcleanup, "Usage: trustcleanup\nCleans up unused trusts.");
 771 }
 772
 773 static void deregistercommands(int hooknum, void *arg) {
 774   if(!commandsregistered)
 775     return;
 776   commandsregistered = 0;
 777
 778   deregistercontrolcmd("trustgroupadd", trusts_cmdtrustgroupadd);
 779   deregistercontrolcmd("trustadd", trusts_cmdtrustadd);
 780   deregistercontrolcmd("trustgroupdel", trusts_cmdtrustgroupdel);
 781   deregistercontrolcmd("trustdel", trusts_cmdtrustdel);
 782   deregistercontrolcmd("trustgroupmodify", trusts_cmdtrustgroupmodify);
 783   deregistercontrolcmd("trusthostmodify", trusts_cmdtrusthostmodify);
 784   deregistercontrolcmd("trustlog", trusts_cmdtrustlog);
 785   deregistercontrolcmd("trustloggrep", trusts_cmdtrustloggrep);
 786   deregistercontrolcmd("trustcomment", trusts_cmdtrustcomment);
 787   deregistercontrolcmd("trustcleanup", trusts_cmdtrustcleanup);
 788 }
 789
 790 static int loaded;
 791
 792 #define _ms_(x) (struct trustmodification){ .name = # x, .fn = modify ## x }
 793 #define MSGROUP(x) { int slot = array_getfreeslot(&trustgroupmods_a); trustgroupmods = (struct trustmodification *)trustgroupmods_a.content; memcpy(&trustgroupmods[slot], &_ms_(x), sizeof(struct trustmodification)); }
 794 #define MSHOST(x) { int slot = array_getfreeslot(&trusthostmods_a); trusthostmods = (struct trustmodification *)trusthostmods_a.content; memcpy(&trusthostmods[slot], &_ms_(x), sizeof(struct trustmodification)); }
 795
 796 static void setupmods(void) {
 797   MSGROUP(expires);
 798   MSGROUP(enforceident);
 799   MSGROUP(reliableusername);
 800   MSGROUP(maxperident);
 801   MSGROUP(contact);
 802   MSGROUP(comment);
 803   MSGROUP(trustedfor);
 804   MSGROUP(cleanup);
 805   MSGROUP(protected);
 806
 807   MSHOST(maxpernode);
 808   MSHOST(nodebits);
 809 }
 810
 811 static int cleanuptrusts_active;
 812
 813 static void cleanuptrusts(void *arg) {
 814   unsigned int now, to_age;
 815   nick *np = (nick *)arg;
 816   trustgroup *tg;
 817   trusthost *th;
 818   int thcount = 0, tgcount = 0;
 819   int i;
 820   array expiredths, expiredtgs;
 821
 822   now = getnettime();
 823   to_age = now - (CLEANUP_TH_INACTIVE * 3600 * 24);
 824
 825   if(np) {
 826     controlwall(NO_OPER, NL_TRUSTS, "CLEANUPTRUSTS: Manually started by %s.", np->nick);
 827   } else {
 828     controlwall(NO_OPER, NL_TRUSTS, "CLEANUPTRUSTS: Automatically started.");
 829   }
 830
 831   if (cleanuptrusts_active) {
 832     controlwall(NO_OPER, NL_TRUSTS, "CLEANUPTRUSTS: ABORTED! Cleanup already in progress! BUG BUG BUG!");
 833     return;
 834   }
 835
 836   cleanuptrusts_active=1;
 837
 838   array_init(&expiredtgs, sizeof(trustgroup *));
 839
 840   for(tg=tglist;tg;tg=tg->next) {
 841     array_init(&expiredths, sizeof(trusthost *));
 842
 843     if(tg->flags & TRUST_NO_CLEANUP)
 844       continue;
 845
 846     for(th=tg->hosts;th;th=th->next) {
 847       if((th->count == 0 && th->created < to_age && th->lastseen < to_age) || (tg->expires && tg->expires < now)) {
 848         int pos = array_getfreeslot(&expiredths);
 849         ((trusthost **)(expiredths.content))[pos] = th;
 850       }
 851     }
 852
 853     for(i=0;i<expiredths.cursi;i++) {
 854       const char *cidrstr;
 855
 856       th = ((trusthost **)(expiredths.content))[i];
 857       triggerhook(HOOK_TRUSTS_DELHOST, th);
 858
 859       cidrstr = CIDRtostr(th->ip, th->bits);
 860       trustlog(tg, "cleanuptrusts", "Removed host '%s' because it was unused for %d days.", cidrstr, CLEANUP_TH_INACTIVE);
 861
 862       th_delete(th);
 863
 864       thcount++;
 865     }
 866
 867     if(!tg->hosts) {
 868       int pos = array_getfreeslot(&expiredtgs);
 869       ((trustgroup **)(expiredtgs.content))[pos] = tg;
 870     }
 871   }
 872
 873   for(i=0;i<expiredtgs.cursi;i++) {
 874     tg = ((trustgroup **)(expiredtgs.content))[i];
 875     triggerhook(HOOK_TRUSTS_DELGROUP, tg);
 876     trustlog(tg, "cleanuptrusts", "Deleted group '%s' because it had no hosts left.", tg->name->content);
 877     tg_delete(tg);
 878     tgcount++;
 879   }
 880
 881   controlwall(NO_OPER, NL_TRUSTS, "CLEANUPTRUSTS: Removed %d trust hosts (inactive for %d days) and %d empty trust groups.", thcount, CLEANUP_TH_INACTIVE, tgcount);
 882
 883   cleanuptrusts_active=0;
 884 }
 885
 886 static void schedulecleanup(int hooknum, void *arg) {
 887   /* run at 1am but only if we're more than 15m away from it, otherwise run tomorrow */
 888
 889   time_t t = time(NULL);
 890   time_t next_run = ((t / 86400) * 86400 + 86400) + 3600;
 891   if(next_run - t < 900)
 892     next_run+=86400;
 893
 894   schedulerecurring(next_run,0,86400,cleanuptrusts,NULL);
 895 }
 896
 897 void _init(void) {
 898   sstring *m;
 899
 900   array_init(&trustgroupmods_a, sizeof(struct trustmodification));
 901   array_init(&trusthostmods_a, sizeof(struct trustmodification));
 902   setupmods();
 903
 904   m = getconfigitem("trusts", "master");
 905   if(!m || (atoi(m->content) != 1)) {
 906     Error("trusts_management", ERR_ERROR, "Not a master server, not loaded.");
 907     return;
 908   }
 909
 910   loaded = 1;
 911
 912   registerhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 913   registerhook(HOOK_TRUSTS_DB_LOADED, schedulecleanup);
 914   registerhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 915
 916   if(trustsdbloaded)
 917     registercommands(0, NULL);
 918 }
 919
 920 void _fini(void) {
 921   array_free(&trustgroupmods_a);
 922   array_free(&trusthostmods_a);
 923
 924   if(!loaded)
 925     return;
 926
 927   deregisterhook(HOOK_TRUSTS_DB_LOADED, registercommands);
 928   deregisterhook(HOOK_TRUSTS_DB_CLOSED, deregistercommands);
 929
 930   deregistercommands(0, NULL);
 931
 932   deleteallschedules(cleanuptrusts);
 933 }