chanserv/chanservuser.c

   1 /*
   2  * chanservuser.c:
   3  *  This file maintains the functions associated with the
   4  * user on the network relating to the channel service
   5  */
   6
   7 #include "chanserv.h"
   8
   9 #include "../core/hooks.h"
  10 #include "../core/schedule.h"
  11 #include "../core/config.h"
  12 #include "../localuser/localuser.h"
  13 #include "../localuser/localuserchannel.h"
  14 #include "../irc/irc_config.h"
  15 #include "../lib/sstring.h"
  16 #include "../nick/nick.h"
  17 #include "../parser/parser.h"
  18 #include "../lib/splitline.h"
  19 #include "../lib/irc_string.h"
  20
  21 #include <string.h>
  22 #include <stdio.h>
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25
  26 nick *chanservnick;
  27 CommandTree *cscommands;
  28 CommandTree *csctcpcommands;
  29
  30 /* Local prototypes */
  31 void chanservuserhandler(nick *target, int message, void **params);
  32
  33 void chanservreguser(void *arg) {
  34   sstring *csnick,*csuser,*cshost,*csrealname,*csaccount;
  35   chanindex *cip;
  36   regchan   *rcp;
  37   int i;
  38
  39   csnick=getcopyconfigitem("chanserv","nick","Q",NICKLEN);
  40   csuser=getcopyconfigitem("chanserv","user","TheQBot",USERLEN);
  41   cshost=getcopyconfigitem("chanserv","host","some.host",HOSTLEN);
  42   csrealname=getcopyconfigitem("chanserv","realname","ChannelService",REALLEN);
  43   csaccount=getcopyconfigitem("chanserv","account",csnick&&csnick->content&&csnick->content[0]?csnick->content:"Q",ACCOUNTLEN);
  44
  45   Error("chanserv",ERR_INFO,"Connecting %s...",csnick->content);
  46
  47   chanservnick=registerlocaluser(csnick->content,csuser->content,cshost->content,
  48                                  csrealname->content,csaccount->content,
  49                                  UMODE_INV|UMODE_SERVICE|UMODE_DEAF|UMODE_OPER|UMODE_ACCOUNT,
  50                                  &chanservuserhandler);
  51
  52   freesstring(csnick);
  53   freesstring(csuser);
  54   freesstring(cshost);
  55   freesstring(csrealname);
  56   freesstring(csaccount);
  57
  58   /* Now join channels */
  59   for (i=0;i<CHANNELHASHSIZE;i++) {
  60     for (cip=chantable[i];cip;cip=cip->next) {
  61       if (cip->channel && (rcp=cip->exts[chanservext]) && !CIsSuspended(rcp)) {
  62         /* This will do timestamp faffing even if it won't actually join */
  63         chanservjoinchan(cip->channel);
  64         /* Do a check at some future time.. */
  65         cs_schedupdate(cip, 1, 5);
  66         rcp->status |= (QCSTAT_OPCHECK | QCSTAT_MODECHECK | QCSTAT_BANCHECK);
  67         if (CIsForceTopic(rcp) || CIsTopicSave(rcp))
  68           localsettopic(chanservnick, cip->channel, (rcp->topic) ? rcp->topic->content : "");
  69       }
  70     }
  71   }
  72
  73   Error("chanserv",ERR_INFO,"Loaded and joined channels.");
  74
  75   if (chanserv_init_status == CS_INIT_NOUSER) {
  76     /* If this is the first time, perform last init tasks */
  77     chanserv_finalinit();
  78   }
  79 }
  80
  81 void chanservuserhandler(nick *target, int message, void **params) {
  82   nick *sender;
  83   char *msg;
  84   Command *cmd;
  85   char *cargv[30];
  86   int cargc;
  87   reguser *rup;
  88   char *chp;
  89
  90   switch(message) {
  91   case LU_KILLED:
  92     scheduleoneshot(time(NULL),&chanservreguser,NULL);
  93     chanservnick=NULL;
  94     break;
  95
  96   case LU_PRIVMSG:
  97   case LU_SECUREMSG:
  98     sender=(nick *)params[0];
  99     msg=(char *)params[1];
 100
 101     if (!(cargc=splitline(msg,cargv,30,0)))
 102       return; /* Ignore blank lines */
 103
 104     if (cargv[0][0]==1) {
 105       /* CTCP */
 106       for (chp=cargv[0]+1;*chp;chp++) {
 107         if (*chp=='\001') {
 108           *chp='\0';
 109           break;
 110         }
 111       }
 112       cmd=findcommandintree(csctcpcommands, cargv[0]+1, 1);
 113       if (cmd) {
 114         rejoinline(cargv[1],cargc-1);
 115         cmd->handler((void *)sender, cargc-1, &(cargv[1]));
 116       }
 117     } else {
 118       cmd=findcommandintree(cscommands, cargv[0], 1);
 119
 120       if (!cmd) {
 121         chanservstdmessage(sender, QM_UNKNOWNCMD, cargv[0]);
 122         break;
 123       }
 124
 125       if ((cmd->level & QCMD_SECURE) && (message != LU_SECUREMSG)) {
 126         chanservstdmessage(sender, QM_SECUREONLY, cargv[0], chanservnick->nick, myserver->content);
 127         break;
 128       }
 129
 130       if ((cmd->level & QCMD_AUTHED)) {
 131         if (!(rup=getreguserfromnick(sender))) {
 132           chanservstdmessage(sender, QM_AUTHEDONLY, cargv[0]);
 133           break;
 134         }
 135         if (UIsSuspended(rup) || (rup->status & QUSTAT_DEAD)) {
 136           chanservstdmessage(sender, QM_BADAUTH, cargv[0]);
 137           break;
 138         }
 139       }
 140
 141       if ((cmd->level & QCMD_NOTAUTHED) && (getreguserfromnick(sender))) {
 142         chanservstdmessage(sender, QM_UNAUTHEDONLY, cargv[0]);
 143         break;
 144       }
 145
 146       if ((cmd->level & QCMD_HELPER) &&
 147           (!(rup=getreguserfromnick(sender)) || !UHasHelperPriv(rup))) {
 148         chanservstdmessage(sender, QM_NOACCESS, cargv[0]);
 149         break;
 150       }
 151
 152       if ((cmd->level & QCMD_OPER) &&
 153           (!IsOper(sender) || !(rup=getreguserfromnick(sender)) || !UHasOperPriv(rup))) {
 154         chanservstdmessage(sender, QM_NOACCESS, cargv[0]);
 155         break;
 156       }
 157
 158       if ((cmd->level & QCMD_ADMIN) &&
 159           (!IsOper(sender) || !(rup=getreguserfromnick(sender)) || !UHasAdminPriv(rup))) {
 160         chanservstdmessage(sender, QM_NOACCESS, cargv[0]);
 161         break;
 162       }
 163
 164       if ((cmd->level & QCMD_DEV) &&
 165           (!IsOper(sender) || !(rup=getreguserfromnick(sender)) || !UIsDev(rup))) {
 166         chanservstdmessage(sender, QM_NOACCESS, cargv[0]);
 167         break;
 168       }
 169
 170       if (cmd->maxparams < (cargc-1)) {
 171         rejoinline(cargv[cmd->maxparams],cargc-(cmd->maxparams));
 172         cargc=(cmd->maxparams)+1;
 173       }
 174
 175       cmd->handler((void *)sender, cargc-1, &(cargv[1]));
 176     }
 177     break;
 178
 179   default:
 180     break;
 181   }
 182 }
 183
 184 void chanservcommandinit() {
 185   cscommands=newcommandtree();
 186   csctcpcommands=newcommandtree();
 187 }
 188
 189 void chanservcommandclose() {
 190   destroycommandtree(cscommands);
 191   destroycommandtree(csctcpcommands);
 192 }
 193
 194 void chanservaddcommand(char *command, int flags, int maxparams, CommandHandler handler, char *description, const char *help) {
 195   Command *newcmd;
 196   cmdsummary *summary;
 197
 198   newcmd=addcommandtotree(cscommands, command, flags, maxparams, handler);
 199   /* Allocate a summary record to put the description in */
 200   summary=(cmdsummary *)malloc(sizeof(cmdsummary));
 201   memset((void *)summary,0,sizeof(cmdsummary));
 202
 203   summary->def=getsstring(description, 250);
 204   summary->defhelp=(char *)help; /* Assume that help is a constant */
 205
 206   newcmd->ext=(void *)summary;
 207   loadcommandsummary(newcmd);
 208 }
 209
 210 void chanservaddctcpcommand(char *command, CommandHandler handler) {
 211   addcommandtotree(csctcpcommands, command, 0, 1, handler);
 212 }
 213
 214 void chanservremovectcpcommand(char *command, CommandHandler handler) {
 215   deletecommandfromtree(csctcpcommands, command, handler);
 216 }
 217
 218 void chanservremovecommand(char *command, CommandHandler handler) {
 219   Command *cmd;
 220   cmdsummary *summary;
 221   int i;
 222
 223   if (!(cmd=findcommandintree(cscommands, command, 1))) {
 224     Error("chanserv",ERR_WARNING,"Tried to unregister unknown command %s",command);
 225     return;
 226   }
 227
 228   summary=(cmdsummary *)cmd->ext;
 229   freesstring(summary->def);
 230   for (i=0;i<MAXLANG;i++) {
 231     if (summary->bylang[i])
 232       freesstring(summary->bylang[i]);
 233   }
 234
 235   free(summary);
 236
 237   deletecommandfromtree(cscommands, command, handler);
 238 }
 239
 240 void chanservjoinchan(channel *cp) {
 241   regchan *rcp;
 242   unsigned int i;
 243   nick *np;
 244   reguser *rup;
 245   regchanuser *rcup;
 246   flag_t themodes = 0;
 247
 248   /* Skip unregistered channels */
 249   if (!(rcp=cp->index->exts[chanservext]))
 250     return;
 251
 252   /* Check for a new timestamp.  But don't do anything stupid if the incoming timestamp is 0 */
 253   if (cp->timestamp && ((!rcp->ltimestamp) || (cp->timestamp < rcp->ltimestamp))) {
 254     rcp->ltimestamp=cp->timestamp;
 255     csdb_updatechanneltimestamp(rcp);
 256   }
 257
 258   /* We won't be doing any joining or parting if we're not online */
 259   if (!chanservnick)
 260     return;
 261
 262   if ((CIsSuspended(rcp) || !CIsJoined(rcp)) && getnumerichandlefromchanhash(cp->users, chanservnick->numeric)) {
 263     if(rcp->suspendreason) {
 264       localpartchannel(chanservnick, cp, rcp->suspendreason->content);
 265     } else {
 266       localpartchannel(chanservnick, cp, NULL);
 267     }
 268   }
 269
 270   /* Right, we are definately going to either join the channel or at least
 271    * burst some modes onto it.
 272    *
 273    * We will try and burst our view of the world; if the timestamps are
 274    * actually equal this will be mostly ignored and we will have to fix it
 275    * up later.  For modes we use the forced modes, plus the default channel
 276    * modes (unless any of those are explicitly denied) */
 277
 278   /* By default, we set the forcemodes and the default modes, but never denymodes..
 279    * OK, actually we should only set the default modes if our timestamp is older.*/
 280   if (cp->timestamp > rcp->ltimestamp)
 281     themodes |= CHANMODE_DEFAULT;
 282   else
 283     themodes=0;
 284
 285   themodes = (themodes | rcp->forcemodes) & ~rcp->denymodes;
 286
 287   /* Now, if someone has just created a channel and we are going to set +i
 288    * or +k on it, this will kick them off.  This could be construed as a
 289    * bit rude if it's their channel, so if there is only one person on the
 290    * channel and they have a right to be there, burst with default modes
 291    * only to avoid them being netrider kicked.
 292    */
 293   if (cp->users->totalusers==1) {
 294     for (i=0;i<cp->users->hashsize;i++) {
 295       if (cp->users->content[i] != nouser) {
 296         if ((np=getnickbynumeric(cp->users->content[i]&CU_NUMERICMASK)) &&
 297             (rup=getreguserfromnick(np)) &&
 298             (rcup=findreguseronchannel(rcp,rup)) &&
 299             CUKnown(rcup)) {
 300           /* OK, there was one user, and they are known on this channel.
 301            * Don't burst with +i or +k */
 302           themodes &= ~(CHANMODE_INVITEONLY | CHANMODE_KEY);
 303         }
 304       }
 305     }
 306   }
 307
 308   /* We should be on the channel - join with our nick */
 309   if (!CIsSuspended(rcp) && CIsJoined(rcp) && !getnumerichandlefromchanhash(cp->users, chanservnick->numeric)) {
 310     /* If we pass the key parameter here but are not setting +k (see above)
 311      * then localburstontochannel() will ignore the key */
 312     localburstontochannel(cp, chanservnick, rcp->ltimestamp, themodes,
 313                          rcp->limit, (rcp->key)?rcp->key->content:NULL);
 314   }
 315
 316   /* We're not joining the channel - send the burst with no nick */
 317   if (!CIsSuspended(rcp) && !CIsJoined(rcp) && (cp->timestamp > rcp->ltimestamp)) {
 318     localburstontochannel(cp, NULL, rcp->ltimestamp, themodes,
 319                           rcp->limit, (rcp->key)?rcp->key->content:NULL);
 320   }
 321 }
 322
 323 void chanservstdmessage(nick *np, int messageid, ... ) {
 324   char buf[5010];
 325   char buf2[512];
 326   int notice;
 327   reguser *rup;
 328   int language;
 329   va_list va, va2;
 330   char *message, *messageargs;
 331   char *bp2,*bp;
 332   int len;
 333
 334   if (getreguserfromnick(np) == NULL) {
 335     notice=1;
 336     language=0;
 337   } else {
 338     rup=getreguserfromnick(np);
 339     if(UIsNotice(rup)) {
 340       notice=1;
 341     } else {
 342       notice=0;
 343     }
 344     language=rup->languageid;
 345   }
 346
 347   if (csmessages[language][messageid]) {
 348     message=csmessages[language][messageid]->content;
 349   } else if (csmessages[0][messageid]) {
 350     message=csmessages[0][messageid]->content;
 351   } else {
 352     message=defaultmessages[messageid*2];
 353   }
 354
 355   messageargs=defaultmessages[messageid*2+1];
 356
 357   va_start(va,messageid);
 358   va_copy(va2, va);
 359   q9vsnprintf(buf,5000,message,messageargs,va);
 360   va_end(va);
 361
 362   len=0;
 363   bp2=buf2;
 364   for (bp=buf; ;bp++) {
 365     /* We send something if we hit a \n, fill the buffer or run out of source */
 366     if (*bp=='\n' || len>490 || !*bp) {
 367       if (*bp && *bp!='\n') {
 368         bp--;
 369       }
 370
 371       *bp2='\0';
 372
 373       if (chanservnick && *buf2) {
 374         if (notice) {
 375           sendnoticetouser(chanservnick,np,"%s",buf2);
 376         } else {
 377           sendmessagetouser(chanservnick,np,"%s",buf2);
 378         }
 379       }
 380
 381       /* If we ran out of buffer, get out here */
 382       if (!*bp)
 383         break;
 384
 385       bp2=buf2;
 386       len=0;
 387     } else {
 388       len++;
 389       *bp2++=*bp;
 390     }
 391   }
 392
 393   /* Special case: If it's a "not enough parameters" message, show the first line of help */
 394   if (messageid==QM_NOTENOUGHPARAMS) {
 395     char *command=va_arg(va2, char *);
 396     cs_sendhelp(np, command, 1);
 397     chanservstdmessage(np, QM_TYPEHELPFORHELP, command);
 398   }
 399
 400   va_end(va2);
 401 }
 402
 403 void chanservsendmessage_real(nick *np, int oneline, char *message, ... ) {
 404   char buf[5010]; /* Very large buffer.. */
 405   char buf2[512], *bp, *bp2;
 406   int notice;
 407   int len;
 408   reguser *rup;
 409
 410   va_list va;
 411
 412   va_start(va,message);
 413   vsnprintf(buf,5000,message,va);
 414   va_end(va);
 415
 416   if (getreguserfromnick(np) == NULL) {
 417     notice=1;
 418   } else {
 419     rup=getreguserfromnick(np);
 420     if(UIsNotice(rup)) {
 421       notice=1;
 422     } else {
 423       notice=0;
 424     }
 425   }
 426
 427   len=0;
 428   bp2=buf2;
 429   for (bp=buf; ;bp++) {
 430     /* We send something if we hit a \n, fill the buffer or run out of source */
 431     if (*bp=='\n' || len>490 || !*bp) {
 432       if (*bp && *bp!='\n') {
 433         bp--;
 434       }
 435
 436       *bp2='\0';
 437
 438       if (chanservnick && *buf2) {
 439         if (notice) {
 440           sendnoticetouser(chanservnick,np,"%s",buf2);
 441         } else {
 442           sendmessagetouser(chanservnick,np,"%s",buf2);
 443         }
 444       }
 445
 446       /* If we ran out of buffer, get out here */
 447       if (!*bp || (*bp=='\n' && oneline))
 448         break;
 449
 450       bp2=buf2;
 451       len=0;
 452     } else {
 453       len++;
 454       *bp2++=*bp;
 455     }
 456   }
 457 }
 458
 459 void chanservwallmessage(char *message, ... ) {
 460   char buf[5010]; /* Very large buffer.. */
 461   va_list va;
 462   nick *np;
 463   unsigned int i=0;
 464
 465   va_start(va,message);
 466   vsnprintf(buf,5000,message,va);
 467   va_end(va);
 468
 469   /* Scan for users */
 470   for (i=0;i<NICKHASHSIZE;i++)
 471     for (np=nicktable[i];np;np=np->next)
 472       if (IsOper(np))
 473         chanservsendmessage(np, "%s", buf);
 474 }
 475
 476 void chanservkillstdmessage(nick *target, int messageid, ... ) {
 477   char buf[512];
 478   int language;
 479   char *message, *messageargs;
 480   va_list va;
 481   reguser *rup;
 482
 483   if (!(rup=getreguserfromnick(target)))
 484     language=0;
 485   else
 486     language=rup->languageid;
 487
 488   if (csmessages[language][messageid])
 489     message=csmessages[language][messageid]->content;
 490   else if (csmessages[0][messageid])
 491     message=csmessages[0][messageid]->content;
 492   else
 493     message=defaultmessages[messageid*2];
 494
 495   messageargs=defaultmessages[messageid*2+1];
 496   va_start(va, messageid);
 497   q9vsnprintf(buf, 511, message, messageargs, va);
 498   va_end(va);
 499   killuser(chanservnick, target, buf);
 500 }
 501
 502 int checkpassword(reguser *rup, const char *pass) {
 503   if (!strncmp(rup->password, pass, PASSLEN))
 504     return 1;
 505   return 0;
 506 }
 507
 508 int checkresponse(reguser *rup, const unsigned char *entropy, const char *response, CRAlgorithm algorithm) {
 509   char usernamel[NICKLEN+1], *dp, *up;
 510
 511   for(up=rup->username,dp=usernamel;*up;)
 512     *dp++ = ToLower(*up++);
 513   *dp = '\0';
 514
 515   return algorithm(usernamel, rup->password, cs_calcchallenge(entropy), response);
 516 }
 517
 518 int checkhashpass(reguser *rup, const char *junk, const char *hash) {
 519   char usernamel[NICKLEN+1], *dp, *up;
 520
 521   for(up=rup->username,dp=usernamel;*up;)
 522     *dp++ = ToLower(*up++);
 523   *dp = '\0';
 524
 525   return cs_checkhashpass(usernamel, rup->password, junk, hash);
 526 }
 527
 528 int setpassword(reguser *rup, const char *pass) {
 529   strncpy(rup->password, pass, PASSLEN);
 530   rup->password[PASSLEN]='\0';
 531   return 1;
 532 }
 533
 534 void cs_checknick(nick *np) {
 535   activeuser* aup;
 536   reguser *rup;
 537   char userhost[USERLEN+HOSTLEN+3];
 538
 539   if (!(aup=getactiveuserfromnick(np))) {
 540     aup=getactiveuser();
 541     np->exts[chanservnext]=aup;
 542   }
 543
 544   assert(getactiveuserfromnick(np));
 545
 546   if (IsAccount(np) && np->auth) {
 547     if (np->auth->exts[chanservaext]) {
 548       rup=getreguserfromnick(np);
 549       /* safe? */
 550       if(rup && UHasSuspension(rup)) {
 551         chanservkillstdmessage(np, QM_SUSPENDKILL);
 552         return;
 553       }
 554       cs_doallautomodes(np);
 555     } else {
 556       /* Auto create user.. */
 557       rup=getreguser();
 558       rup->status=0;
 559       rup->ID=np->auth->userid;
 560       if (rup->ID > lastuserID)
 561         lastuserID=rup->ID;
 562       strncpy(rup->username,np->authname,NICKLEN); rup->username[NICKLEN]='\0';
 563       rup->created=time(NULL);
 564       rup->lastauth=0;
 565       rup->lastemailchange=0;
 566       rup->flags=QUFLAG_NOTICE;
 567       rup->languageid=0;
 568       rup->suspendby=0;
 569       rup->suspendexp=0;
 570       rup->suspendtime=0;
 571       rup->lockuntil=0;
 572       rup->password[0]='\0';
 573       rup->email=NULL;
 574       rup->lastemail=NULL;
 575       rup->localpart=NULL;
 576       rup->domain=NULL;
 577       rup->info=NULL;
 578       sprintf(userhost,"%s@%s",np->ident,np->host->name->content);
 579       rup->lastuserhost=getsstring(userhost,USERLEN+HOSTLEN+1);
 580       rup->suspendreason=NULL;
 581       rup->comment=NULL;
 582       rup->knownon=NULL;
 583       rup->checkshd=NULL;
 584       rup->stealcount=0;
 585       rup->fakeuser=NULL;
 586       addregusertohash(rup);
 587
 588       csdb_createuser(rup);
 589     }
 590   }
 591
 592   cs_checknickbans(np);
 593 }
 594
 595 void cs_checkchanmodes(channel *cp) {
 596   modechanges changes;
 597
 598   localsetmodeinit (&changes, cp, chanservnick);
 599   cs_docheckchanmodes(cp, &changes);
 600   localsetmodeflush (&changes, 1);
 601 }
 602
 603 void cs_docheckchanmodes(channel *cp, modechanges *changes) {
 604   regchan *rcp;
 605
 606   if (!cp)
 607     return;
 608
 609   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 610     return;
 611
 612   /* Take care of the simple modes */
 613   localdosetmode_simple(changes, rcp->forcemodes & ~(cp->flags), rcp->denymodes & cp->flags);
 614
 615   /* Check for forced key.  Note that we ALWAYS call localdosetmode_key
 616    * in case the wrong key is set atm */
 617   if (rcp->forcemodes & CHANMODE_KEY) {
 618     if (!rcp->key) {
 619       Error("chanserv",ERR_WARNING,"Key forced but no key specified for %s: cleared forcemode.",rcp->index->name->content);
 620       rcp->forcemodes &= ~CHANMODE_KEY;
 621       csdb_updatechannel(rcp);
 622     } else {
 623       localdosetmode_key(changes, rcp->key->content, MCB_ADD);
 624     }
 625   }
 626
 627   /* Check for denied key */
 628   if ((rcp->denymodes & CHANMODE_KEY) && IsKey(cp)) {
 629     localdosetmode_key(changes, NULL, MCB_DEL);
 630   }
 631
 632   /* Check for forced limit.  Always call in case of wrong limit */
 633   if (rcp->forcemodes & CHANMODE_LIMIT) {
 634     localdosetmode_limit(changes, rcp->limit, MCB_ADD);
 635   }
 636 }
 637
 638 /* Slightly misnamed function that checks each USER on the channel against channel
 639  * settings.  Possible actions are opping/deopping, voicing/devoicing, and banning
 640  * for chanflag +k or chanlev flag +b */
 641 void cs_docheckopvoice(channel *cp, modechanges *changes) {
 642   regchan *rcp;
 643   reguser *rup;
 644   regchanuser *rcup;
 645   nick *np;
 646   int i;
 647
 648   if (!cp)
 649     return;
 650
 651   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 652     return;
 653
 654   for (i=0;i<cp->users->hashsize;i++) {
 655     if (cp->users->content[i]==nouser)
 656       continue;
 657
 658     if ((np=getnickbynumeric(cp->users->content[i]))==NULL) {
 659       Error("chanserv",ERR_ERROR,"Found non-existent numeric %d on channel %s",cp->users->content[i],
 660             cp->index->name->content);
 661       continue;
 662     }
 663
 664     if ((rup=getreguserfromnick(np)))
 665       rcup=findreguseronchannel(rcp,rup);
 666     else
 667       rcup=NULL;
 668
 669     if (rcup && CUIsBanned(rcup) && !IsService(np)) {
 670       cs_banuser(changes, cp->index, np, NULL);
 671       continue;
 672     }
 673
 674     /* chanflag +k checks; kick them if they "obviously" can't rejoin without a ban */
 675     if (!IsService(np) && CIsKnownOnly(rcp) && !(rcup && CUKnown(rcup))) {
 676       if (IsInviteOnly(cp) || (IsRegOnly(cp) && !IsAccount(np))) {
 677         localkickuser(chanservnick,cp,np,"Authorised users only.");
 678       } else {
 679         cs_banuser(NULL, cp->index, np, "Authorised users only.");
 680       }
 681       continue;
 682     }
 683
 684     if ((cp->users->content[i] & CUMODE_OP) && !IsService(np)) {
 685       if ((CIsBitch(rcp) && (!rcup || !CUHasOpPriv(rcup))) ||
 686            (rcup && CUIsDeny(rcup)))
 687         localdosetmode_nick(changes, np, MC_DEOP);
 688     } else {
 689       if (rcup && (CUIsProtect(rcup) || CIsProtect(rcp)) && CUIsOp(rcup) && !CUIsDeny(rcup)) {
 690         localdosetmode_nick(changes, np, MC_OP);
 691         cs_logchanop(rcp, np->nick, rcup->user);
 692       }
 693     }
 694
 695     if (cp->users->content[i] & CUMODE_VOICE) {
 696       if (rcup && CUIsQuiet(rcup))
 697         localdosetmode_nick(changes, np, MC_DEVOICE);
 698     } else {
 699       if (rcup && (CUIsProtect(rcup) || CIsProtect(rcp)) && CUIsVoice(rcup) && !CUIsQuiet(rcup) && !(cp->users->content[i] & CUMODE_OP))
 700         localdosetmode_nick(changes, np, MC_VOICE);
 701     }
 702   }
 703 }
 704
 705 void cs_doallautomodes(nick *np) {
 706   reguser *rup;
 707   regchanuser *rcup;
 708   unsigned long *lp;
 709   modechanges changes;
 710
 711   if (!(rup=getreguserfromnick(np)))
 712     return;
 713
 714   for (rcup=rup->knownon;rcup;rcup=rcup->nextbyuser) {
 715     if (rcup->chan->index->channel) {
 716       /* Channel exists */
 717       if ((lp=getnumerichandlefromchanhash(rcup->chan->index->channel->users, np->numeric))) {
 718         /* User is on channel.. */
 719
 720         /* Update last use time */
 721         rcup->usetime=getnettime();
 722
 723         localsetmodeinit(&changes, rcup->chan->index->channel, chanservnick);
 724         if (*lp & CUMODE_OP) {
 725           if (!IsService(np) && (CUIsDeny(rcup) || (CIsBitch(rcup->chan) && !CUHasOpPriv(rcup))))
 726             localdosetmode_nick(&changes, np, MC_DEOP);
 727         } else {
 728           if (!CUIsDeny(rcup) && CUIsOp(rcup) &&
 729               (CUIsProtect(rcup) || CIsProtect(rcup->chan) || CUIsAutoOp(rcup))) {
 730             localdosetmode_nick(&changes, np, MC_OP);
 731             cs_logchanop(rcup->chan, np->nick, rup);
 732           }
 733         }
 734
 735         if (*lp & CUMODE_VOICE) {
 736           if (CUIsQuiet(rcup))
 737             localdosetmode_nick(&changes, np, MC_DEVOICE);
 738         } else {
 739           if (!CUIsQuiet(rcup) && CUIsVoice(rcup) && !(*lp & CUMODE_OP) &&
 740               (CUIsProtect(rcup) || CIsProtect(rcup->chan) || CUIsAutoVoice(rcup)))
 741             localdosetmode_nick(&changes, np, MC_VOICE);
 742         }
 743         localsetmodeflush(&changes, 1);
 744       } else {
 745         /* Channel exists but user is not joined: invite if they are +j-b */
 746         if (CUIsAutoInvite(rcup) && CUKnown(rcup) && !CUIsBanned(rcup)) {
 747           localinvite(chanservnick, rcup->chan->index->channel, np);
 748         }
 749       }
 750     }
 751   }
 752 }
 753
 754 void cs_checknickbans(nick *np) {
 755   channel **ca;
 756   regchan *rcp;
 757   int i,j;
 758
 759   if (IsService(np))
 760     return;
 761
 762   /* Avoid races: memcpy the channel array */
 763   i=np->channels->cursi;
 764   ca=(channel **)malloc(i*sizeof(channel *));
 765   memcpy(ca, np->channels->content,i*sizeof(channel *));
 766
 767   for (j=0;j<i;j++) {
 768     if ((rcp=ca[j]->index->exts[chanservext]) && !CIsSuspended(rcp) &&
 769         CIsEnforce(rcp) && nickbanned_visible(np, ca[j]))
 770       localkickuser(chanservnick, ca[j], np, "Banned.");
 771   }
 772
 773   free(ca);
 774 }
 775
 776 void cs_checkbans(channel *cp) {
 777   regchan *rcp;
 778   int i;
 779   nick *np;
 780   chanban *cbp;
 781   regban *rbp;
 782   time_t now;
 783   modechanges changes;
 784
 785   if (!cp)
 786     return;
 787
 788   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 789     return;
 790
 791   now=time(NULL);
 792
 793   localsetmodeinit(&changes, cp, chanservnick);
 794
 795   for (i=0;i<cp->users->hashsize;i++) {
 796     if (cp->users->content[i]==nouser)
 797       continue;
 798
 799     if ((np=getnickbynumeric(cp->users->content[i]))==NULL) {
 800       Error("chanserv",ERR_ERROR,"Found numeric %d on channel %s who doesn't exist.",
 801             cp->users->content[i], cp->index->name->content);
 802       continue;
 803     }
 804
 805     if (IsService(np))
 806       continue;
 807
 808     for (rbp=rcp->bans;rbp;rbp=rbp->next) {
 809       if (((!rbp->expiry) || (rbp->expiry <= now)) &&
 810           nickmatchban_visible(np, rbp->cbp)) {
 811         if (!nickbanned_visible(np, cp)) {
 812           localdosetmode_ban(&changes, bantostring(rbp->cbp), MCB_ADD);
 813         }
 814         localkickuser(chanservnick,cp,np,rbp->reason?rbp->reason->content:"Banned.");
 815         break;
 816       }
 817     }
 818
 819     if (rbp) /* If we broke out of above loop (due to kick) rbp will be set.. */
 820       continue;
 821
 822     if (CIsEnforce(rcp)) {
 823       for (cbp=cp->bans;cbp;cbp=cbp->next) {
 824         if ((cbp->timeset>=rcp->lastbancheck) && nickmatchban_visible(np, cbp))
 825           localkickuser(chanservnick,cp,np,"Banned.");
 826       }
 827       rcp->lastbancheck=time(NULL);
 828     }
 829   }
 830
 831   localsetmodeflush(&changes,1);
 832 }
 833
 834 /*
 835  * cs_schedupdate:
 836  *  This function schedules an update check on a channel
 837  */
 838 void cs_schedupdate(chanindex *cip, int mintime, int maxtime) {
 839   int delay=mintime+(rand()%(maxtime-mintime));
 840   regchan *rcp;
 841
 842   if (!(rcp=cip->exts[chanservext]) || CIsSuspended(rcp))
 843     return;
 844
 845   if (rcp->checksched) {
 846     deleteschedule(rcp->checksched, cs_timerfunc, cip);
 847   }
 848
 849   rcp->checksched=scheduleoneshot(time(NULL)+delay, cs_timerfunc, cip);
 850 }
 851
 852 /*
 853  * cs_timerfunc:
 854  *  This function does several things:
 855  *   * Updates auto-limit and/or removes bans as necessary
 856  *   * Schedules the next timed call
 857  *   * Does any pending op/ban/mode checks
 858  * It is safe to use either as a target for a schedule() call, or to call
 859  * directly when parameters change (e.g. autolimit settings or ban expire
 860  * timers).
 861  * To force a limit update, set rcp->limit to 0..
 862  */
 863
 864 void cs_timerfunc(void *arg) {
 865   chanindex *cip=arg;
 866   channel *cp=cip->channel;
 867   regchan *rcp;
 868   chanban *cbp, *ncbp;
 869   regban **rbh, *rbp;
 870   time_t nextsched=0;
 871   time_t now=time(NULL);
 872   modechanges changes;
 873
 874   if (!(rcp=cip->exts[chanservext]))
 875     return;
 876
 877   verifyregchan(rcp);
 878
 879   /* Always nullify the checksched even if the channel is suspended.. */
 880   if (rcp->checksched) {
 881     deleteschedule(rcp->checksched, cs_timerfunc, arg);
 882     rcp->checksched=NULL;
 883   }
 884
 885   if (!cp || CIsSuspended(rcp))
 886     return;
 887
 888   /* Check if we need to leave the channel first */
 889   if (chanservnick && CIsJoined(rcp) && cip->channel &&
 890       cip->channel->users->totalusers==1 &&
 891       getnumerichandlefromchanhash(cip->channel->users, chanservnick->numeric)) {
 892
 893     /* Only chanserv left in this channel */
 894     if (now >= (rcp->lastpart + LINGERTIME)) {
 895       /* Time to go */
 896       localpartchannel(chanservnick, cip->channel, "Empty Channel");
 897       return;
 898     } else {
 899       if (!nextsched || nextsched > (rcp->lastpart + LINGERTIME))
 900         nextsched=rcp->lastpart+LINGERTIME;
 901     }
 902   }
 903
 904   localsetmodeinit(&changes, cp, chanservnick);
 905
 906   if (CIsAutoLimit(rcp)) {
 907     if (!rcp->limit || rcp->autoupdate <= now) {
 908       /* Update limit.. */
 909       rcp->limit=cp->users->totalusers+rcp->autolimit;
 910       rcp->status |= QCSTAT_MODECHECK;
 911
 912       /* And set the schedule for the next update */
 913       rcp->autoupdate = now + AUTOLIMIT_INTERVAL;
 914     }
 915
 916     if (!nextsched || rcp->autoupdate <= nextsched)
 917       nextsched=rcp->autoupdate;
 918   }
 919
 920   if (rcp->status & QCSTAT_OPCHECK) {
 921     rcp->status &= ~QCSTAT_OPCHECK;
 922     cs_docheckopvoice(cp, &changes);
 923   }
 924
 925   if (rcp->status & QCSTAT_MODECHECK) {
 926     rcp->status &= ~QCSTAT_MODECHECK;
 927     cs_docheckchanmodes(cp, &changes);
 928   }
 929
 930   if (rcp->status & QCSTAT_BANCHECK) {
 931     rcp->status &= ~QCSTAT_BANCHECK;
 932     cs_checkbans(cp);
 933   }
 934
 935   /* This ban check is AFTER docheckopvoice in case checkopvoice set a
 936    * ban which we need to automatically remove later.. */
 937
 938   if (rcp->banduration) {
 939     for (cbp=cp->bans;cbp;cbp=ncbp) {
 940       ncbp=cbp->next;
 941       if (cbp->timeset+rcp->banduration<=now) {
 942         localdosetmode_ban(&changes, bantostring(cbp), MCB_DEL);
 943       } else {
 944         if (!nextsched || cbp->timeset+rcp->banduration <= nextsched) {
 945           nextsched=rcp->banduration+cbp->timeset;
 946         }
 947       }
 948     }
 949   }
 950
 951   /* Check for expiry of registered bans */
 952   if (rcp->bans) {
 953     for (rbh=&(rcp->bans);*rbh;) {
 954       rbp=*rbh;
 955       verifyregchanban(rbp);
 956       if (rbp->expiry && (rbp->expiry < now)) {
 957         /* Expired ban */
 958         /* Remove ban if it's on the channel (localdosetmode_ban will silently
 959          * skip bans that don't exist) */
 960         localdosetmode_ban(&changes, bantostring(rbp->cbp), MCB_DEL);
 961         /* Remove from database */
 962         csdb_deleteban(rbp);
 963         /* Remove from list */
 964         (*rbh)=rbp->next;
 965         /* Free ban/string and update setby refcount, and free actual regban */
 966         freesstring(rbp->reason);
 967         freechanban(rbp->cbp);
 968         freeregban(rbp);
 969       } else {
 970         if (rbp->expiry && (!nextsched || rbp->expiry <= nextsched)) {
 971           nextsched=rbp->expiry;
 972         }
 973         rbh=&(rbp->next);
 974       }
 975     }
 976   }
 977
 978   if (nextsched)
 979     rcp->checksched=scheduleoneshot(nextsched, cs_timerfunc, arg);
 980
 981   localsetmodeflush(&changes, 1);
 982 }
 983
 984 void cs_removechannel(regchan *rcp) {
 985   int i;
 986   chanindex *cip;
 987   regchanuser *rcup, *nrcup;
 988   regban *rbp, *nrbp;
 989
 990   cip=rcp->index;
 991
 992   for (i=0;i<REGCHANUSERHASHSIZE;i++) {
 993     for (rcup=rcp->regusers[i];rcup;rcup=nrcup) {
 994       nrcup=rcup->nextbychan;
 995       delreguserfromchannel(rcp, rcup->user);
 996       freeregchanuser(rcup);
 997     }
 998   }
 999
1000   for (rbp=rcp->bans;rbp;rbp=nrbp) {
1001     nrbp=rbp->next;
1002     freesstring(rbp->reason);
1003     freechanban(rbp->cbp);
1004     freeregban(rbp);
1005   }
1006
1007   rcp->bans=NULL;
1008
1009   if (rcp->checksched)
1010     deleteschedule(rcp->checksched, cs_timerfunc, rcp->index);
1011
1012   if (cip->channel) {
1013     rcp->flags=QCFLAG_SUSPENDED;
1014     chanservjoinchan(cip->channel); /* Force off the channel */
1015   }
1016
1017   csdb_deletechannel(rcp);
1018
1019   freesstring(rcp->welcome);
1020   freesstring(rcp->topic);
1021   freesstring(rcp->key);
1022   freesstring(rcp->suspendreason);
1023   freesstring(rcp->comment);
1024
1025   freeregchan(rcp);
1026
1027   cip->exts[chanservext]=NULL;
1028   releasechanindex(cip);
1029 }
1030
1031 /* Sender is who the DELCHAN is attributed to.. */
1032 int cs_removechannelifempty(nick *sender, regchan *rcp) {
1033   unsigned int i;
1034   regchanuser *rcup;
1035
1036   for (i=0;i<REGCHANUSERHASHSIZE;i++) {
1037     for (rcup=rcp->regusers[i];rcup;rcup=rcup->nextbychan) {
1038       if (rcup->flags & ~(QCUFLAGS_PUNISH))
1039         return 0;
1040     }
1041   }
1042
1043   cs_log(sender,"DELCHAN %s (Empty)",rcp->index->name->content);
1044   cs_removechannel(rcp);
1045
1046   return 1;
1047 }
1048
1049 void cs_removeuser(reguser *rup) {
1050   regchanuser *rcup, *nrcup;
1051   regchan *rcp;
1052   struct authname *anp;
1053
1054   /* Remove the user from all its channels */
1055   for (rcup=rup->knownon;rcup;rcup=nrcup) {
1056     nrcup=rcup->nextbyuser;
1057     rcp=rcup->chan;
1058
1059     delreguserfromchannel(rcp, rup);
1060     cs_removechannelifempty(NULL, rcp);
1061   }
1062
1063   if(rup->domain)
1064     delreguserfrommaildomain(rup,rup->domain);
1065   freesstring(rup->localpart);
1066   freesstring(rup->email);
1067   freesstring(rup->lastemail);
1068   freesstring(rup->lastuserhost);
1069   freesstring(rup->suspendreason);
1070   freesstring(rup->comment);
1071   freesstring(rup->info);
1072
1073   csdb_deleteuser(rup);
1074
1075   removereguserfromhash(rup);
1076
1077   if ((anp=findauthname(rup->ID)) && anp->nicks) {
1078     rup->status |= QUSTAT_DEAD;
1079   } else {
1080     freereguser(rup);
1081   }
1082 }
1083
1084 int cs_bancheck(nick *np, channel *cp) {
1085   time_t now=time(NULL);
1086   regban **rbh, *rbp;
1087   modechanges changes;
1088   regchan *rcp;
1089
1090   if (!(rcp=cp->index->exts[chanservext]))
1091     return 0;
1092
1093   for (rbh=&(rcp->bans);*rbh;) {
1094     if ((*rbh)->expiry && ((*rbh)->expiry < now)) {
1095       /* Expired ban */
1096       csdb_deleteban(*rbh);
1097       rbp=*rbh;
1098       (*rbh)=rbp->next;
1099
1100       freesstring(rbp->reason);
1101       freechanban(rbp->cbp);
1102       freeregban(rbp);
1103     } else if (nickmatchban_visible(np,(*rbh)->cbp)) {
1104       /* This user matches this ban.. */
1105       if (!nickbanned_visible(np,cp)) {
1106         /* Only bother putting the ban on the channel if they're not banned already */
1107         /* (might be covered by this ban or a different one.. doesn't really matter */
1108         localsetmodeinit(&changes, cp, chanservnick);
1109         localdosetmode_ban(&changes, bantostring((*rbh)->cbp), MCB_ADD);
1110         localsetmodeflush(&changes, 1);
1111         cs_timerfunc(cp->index);
1112       }
1113       localkickuser(chanservnick, cp, np, (*rbh)->reason ? (*rbh)->reason->content : "Banned.");
1114       return 1;
1115     } else {
1116       rbh=&((*rbh)->next);
1117     }
1118   }
1119
1120   return 0;
1121 }
1122
1123 void cs_setregban(chanindex *cip, regban *rbp) {
1124   modechanges changes;
1125   int i;
1126   nick *np;
1127
1128   if (!cip->channel)
1129     return;
1130
1131   localsetmodeinit(&changes, cip->channel, chanservnick);
1132   localdosetmode_ban(&changes, bantostring(rbp->cbp), MCB_ADD);
1133   localsetmodeflush(&changes, 1);
1134
1135   for (i=0;(cip->channel) && i<cip->channel->users->hashsize;i++) {
1136     if (cip->channel->users->content[i]!=nouser &&
1137         (np=getnickbynumeric(cip->channel->users->content[i])) &&
1138         !IsService(np) &&
1139         nickmatchban_visible(np, rbp->cbp))
1140       localkickuser(chanservnick, cip->channel, np, rbp->reason ? rbp->reason->content : "Banned.");
1141   }
1142
1143   cs_timerfunc(cip);
1144 }
1145
1146 void cs_banuser(modechanges *changes, chanindex *cip, nick *np, const char *reason) {
1147   modechanges lchanges;
1148   char banmask[NICKLEN+USERLEN+HOSTLEN+3];
1149
1150   if (!cip->channel)
1151     return;
1152
1153   if (nickbanned_visible(np, cip->channel)) {
1154     localkickuser(chanservnick, cip->channel, np, reason?reason:"Banned.");
1155     return;
1156   }
1157
1158   if (IsAccount(np)) {
1159     /* Ban their account.. */
1160     sprintf(banmask,"*!*@%s.%s",np->authname,HIS_HIDDENHOST);
1161   } else if (IsSetHost(np)) {
1162     /* sethosted: ban ident@host */
1163     sprintf(banmask,"*!%s@%s",np->shident->content,np->sethost->content);
1164   } else if (np->host->clonecount>3) {
1165       /* >3 clones, ban user@host */
1166     sprintf(banmask,"*!%s@%s",np->ident,np->host->name->content);
1167   } else {
1168     sprintf(banmask,"*!*@%s",np->host->name->content);
1169   }
1170
1171   if (!changes) {
1172     localsetmodeinit(&lchanges, cip->channel, chanservnick);
1173     localdosetmode_ban(&lchanges, banmask, MCB_ADD);
1174     localsetmodeflush(&lchanges, 1);
1175   } else {
1176     localdosetmode_ban(changes, banmask, MCB_ADD);
1177   }
1178
1179   localkickuser(chanservnick, cip->channel, np, reason?reason:"Banned.");
1180 }
1181
1182 /*
1183  * cs_sanitisechanlev: Removes impossible combinations from chanlev flags.
1184  * chanservuser.c is probably not the right file for this, but nowhere better
1185  * presented itself...
1186  */
1187 flag_t cs_sanitisechanlev(flag_t flags) {
1188   /* +m or +n cannot have any "punishment" flags */
1189   if (flags & (QCUFLAG_MASTER | QCUFLAG_OWNER))
1190     flags &= ~(QCUFLAGS_PUNISH);
1191
1192   /* +d can't be +o */
1193   if (flags & QCUFLAG_DENY)
1194     flags &= ~QCUFLAG_OP;
1195
1196   /* +q can't be +v */
1197   if (flags & QCUFLAG_QUIET)
1198     flags &= ~QCUFLAG_VOICE;
1199
1200   /* +p trumps +a and +g */
1201   if (flags & QCUFLAG_PROTECT)
1202     flags &= ~(QCUFLAG_AUTOOP | QCUFLAG_AUTOVOICE);
1203
1204   /* -o can't be +a */
1205   if (!(flags & QCUFLAG_OP))
1206     flags &= ~QCUFLAG_AUTOOP;
1207
1208   /* +a or -v can't be +g.  +a implies +o at this stage (see above) */
1209   if (!(flags & QCUFLAG_VOICE) || (flags & QCUFLAG_AUTOOP))
1210     flags &= ~QCUFLAG_AUTOVOICE;
1211
1212   /* +p requires +o or +v */
1213   if (!(flags & (QCUFLAG_VOICE | QCUFLAG_OP)))
1214     flags &= ~QCUFLAG_PROTECT;
1215
1216   /* The personal flags require one of +mnovk, as does +t */
1217   if (!(flags & (QCUFLAG_OWNER | QCUFLAG_MASTER | QCUFLAG_OP | QCUFLAG_VOICE | QCUFLAG_KNOWN)))
1218     flags &= ~(QCUFLAGS_PERSONAL | QCUFLAG_TOPIC);
1219
1220   return flags;
1221 }
1222
1223 /*
1224  * findreguser:
1225  *  This function does the standard "nick or #user" lookup.
1226  *  If "sender" is not NULL, a suitable error message will
1227  *  be sent if the lookup fails.
1228  *  "sender" MUST be sent when a user is requesting a lookup
1229  *  as there is some policy code here.
1230  */
1231
1232 reguser *findreguser(nick *sender, const char *str) {
1233   reguser *rup, *vrup = getreguserfromnick(sender);;
1234   nick *np;
1235
1236   if (!str || !*str)
1237     return NULL;
1238
1239   if (*str=='#') {
1240     if (str[1]=='\0') {
1241       if (sender)
1242         chanservstdmessage(sender, QM_UNKNOWNUSER, str);
1243       return NULL;
1244     }
1245     if (!(rup=findreguserbynick(str+1)) && sender)
1246       chanservstdmessage(sender, QM_UNKNOWNUSER, str);
1247   } else if (*str=='&' && vrup && UHasHelperPriv(vrup)) {
1248     if (str[1]=='\0') {
1249       if (sender)
1250         chanservstdmessage(sender, QM_UNKNOWNUSER, str);
1251       return NULL;
1252     }
1253     if (!(rup=findreguserbyID(atoi(str+1))) && sender)
1254       chanservstdmessage(sender, QM_UNKNOWNUSER, str);
1255   } else {
1256     if (!(np=getnickbynick(str))) {
1257       if (sender)
1258         chanservstdmessage(sender, QM_UNKNOWNUSER, str);
1259       return NULL;
1260     }
1261     if (!(rup=getreguserfromnick(np)) && sender)
1262       chanservstdmessage(sender, QM_USERNOTAUTHED, str);
1263   }
1264
1265   /* removed the suspended check from here, I don't see the point... */
1266   if (rup && (rup->status & QUSTAT_DEAD)) {
1267     chanservstdmessage(sender, QM_USERHASBADAUTH, rup->username);
1268     return NULL;
1269   }
1270
1271   return rup;
1272 }
1273
1274 /*
1275  * Unbans a mask from a channel, including permbans if user has correct privs.
1276  *
1277  * Return 0 if it works, 1 if it don't.
1278  */
1279 int cs_unbanfn(nick *sender, chanindex *cip, UnbanFN fn, void *arg, int removepermbans, int abortonfailure) {
1280   regban **rbh, *rbp;
1281   chanban **cbh, *cbp;
1282   regchan *rcp;
1283   modechanges changes;
1284   char *banstr;
1285
1286   rcp=cip->exts[chanservext];
1287
1288   if (cip->channel)
1289     localsetmodeinit(&changes, cip->channel, chanservnick);
1290
1291   for (rbh=&(rcp->bans); *rbh; ) {
1292     rbp=*rbh;
1293     if (fn(arg, rbp->cbp)) {
1294       banstr=bantostring(rbp->cbp);
1295       /* Check perms and remove */
1296       if(!removepermbans) {
1297         chanservstdmessage(sender, QM_WARNNOTREMOVEDPERMBAN, banstr, cip->name->content);
1298         rbh=&(rbp->next);
1299       } else if (!cs_checkaccess(sender, NULL, CA_MASTERPRIV, cip, NULL, 0, 1)) {
1300         chanservstdmessage(sender, QM_NOTREMOVEDPERMBAN, banstr, cip->name->content);
1301         if (abortonfailure) return 1; /* Just give up... */
1302         rbh=&(rbp->next);
1303       } else {
1304         chanservstdmessage(sender, QM_REMOVEDPERMBAN, banstr, cip->name->content);
1305         if (cip->channel)
1306           localdosetmode_ban(&changes, banstr, MCB_DEL);
1307         /* Remove from database */
1308         csdb_deleteban(rbp);
1309         /* Remove from list */
1310         (*rbh)=rbp->next;
1311         /* Free ban/string and update setby refcount, and free actual regban */
1312         freesstring(rbp->reason);
1313         freechanban(rbp->cbp);
1314         freeregban(rbp);
1315       }
1316     } else {
1317       rbh=&(rbp->next);
1318     }
1319   }
1320
1321   if (cip->channel) {
1322     for (cbh=&(cip->channel->bans); *cbh; ) {
1323       cbp=*cbh;
1324       if (fn(arg, cbp)) {
1325         /* Remove */
1326         banstr=bantostring(cbp);
1327         chanservstdmessage(sender, QM_REMOVEDCHANBAN, banstr, cip->name->content);
1328         localdosetmode_ban(&changes, banstr, MCB_DEL);
1329       } else {
1330         cbh=&(cbp->next);
1331       }
1332     }
1333     localsetmodeflush(&changes,1);
1334   }
1335
1336   return 0;
1337 }
1338
1339 /* Add entry to channel op history when someone gets ops. */
1340 void cs_logchanop(regchan *rcp, char *nick, reguser *rup) {
1341   strncpy(rcp->chanopnicks[rcp->chanoppos], nick, NICKLEN);
1342   rcp->chanopnicks[rcp->chanoppos][NICKLEN]='\0';
1343   rcp->chanopaccts[rcp->chanoppos]=rup->ID;
1344   rcp->chanoppos=(rcp->chanoppos+1)%CHANOPHISTORY;
1345 }