chanserv/chanservnetevents.c

   1 /*
   2  * chanservnetevents.c:
   3  *  Handles the bot reaction to network events (joins, parts, mode changes
   4  *  etc.)
   5  */
   6
   7 #include "chanserv.h"
   8
   9 #include "../channel/channel.h"
  10 #include "../nick/nick.h"
  11 #include "../localuser/localuser.h"
  12 #include "../localuser/localuserchannel.h"
  13
  14 #include <stdio.h>
  15
  16 /* cs_handlenick:
  17  *  This is for HOOK_NICK_NEWNICK and HOOK_NICK_ACCOUNT.
  18  *  Associate the nick with it's correct account.
  19  */
  20
  21 void cs_handlenick(int hooknum, void *arg) {
  22   nick *np=(nick *)arg;
  23
  24   cs_checknick(np);
  25 }
  26
  27 void cs_handlesethost(int hooknum, void *arg) {
  28   nick *np=arg;
  29
  30   cs_checknickbans(np);
  31 }
  32
  33 void cs_handlelostnick(int hooknum, void *arg) {
  34   nick *np=(nick *)arg;
  35   reguser *rup;
  36
  37   if ((rup=getreguserfromnick(np))) {
  38     /* Clean up if this is the last user.  auth->usercount is decremented
  39      * AFTER the hook is sent... */
  40     if ((rup->status & QUSTAT_DEAD) && (np->auth->usercount==1)) {
  41       freereguser(rup);
  42     }
  43   }
  44
  45   if (getactiveuserfromnick(np))
  46     freeactiveuser(getactiveuserfromnick(np));
  47 }
  48
  49 /*
  50  * cs_handlenewchannel:
  51  *  This is for the HOOK_CHANNEL_NEWCHANNEL message.
  52  *  A new channel has just been created on the network, associate
  53  *  with the registered channel (if one exists) unless it's suspended.
  54  */
  55
  56 void cs_handlenewchannel(int hooknum, void *arg) {
  57   channel *cp=(channel *)arg;
  58   regchan *rcp;
  59
  60   /* Get the registered channel */
  61   if ((rcp=(regchan *)cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
  62     return;
  63
  64   /* chanservjoinchan() will deal with joining the channel and/or setting the timestamp */
  65   chanservjoinchan(cp);
  66
  67   /* Make sure the right modes are set/cleared */
  68   cs_checkchanmodes(cp);
  69
  70   /* Start the timer rolling */
  71   cs_timerfunc(cp->index);
  72
  73   /* If topicsave or forcetopic is set, update the topic */
  74   if (CIsForceTopic(rcp) || CIsTopicSave(rcp)) {
  75     localsettopic(chanservnick, cp, (rcp->topic) ? rcp->topic->content : "");
  76   }
  77 }
  78
  79 void cs_handlechanlostuser(int hooknum, void *arg) {
  80   void **args=(void **)arg;
  81   channel *cp=args[0];
  82   regchan *rcp;
  83
  84   if (!(rcp=cp->index->exts[chanservext]) || CIsSuspended(rcp) || !chanservnick ||
  85       (chanservnick==args[1]))
  86     return;
  87
  88   if (!CIsJoined(rcp))
  89     return;
  90
  91   if (cp->users->totalusers==2 &&
  92       getnumerichandlefromchanhash(cp->users, chanservnick->numeric)) {
  93     /* OK, Q is on the channel and not the one leaving.. */
  94     rcp->lastpart=time(NULL);
  95     cs_schedupdate(cp->index, 1, 5);
  96   }
  97 }
  98
  99
 100 /*
 101  * cs_handlelostchannel:
 102  *  This is for the HOOK_CHANNEL_LOSTCHANNEL message.
 103  *  A channel has just disappeared, clear our association with it.
 104  */
 105
 106 void cs_handlelostchannel(int hooknum, void *arg) {
 107   /*  channel *cp=(channel *)arg; */
 108
 109   /* Do we actually need to do anything here? */
 110 }
 111
 112 /*
 113  * cs_handlejoin:
 114  *  A user joined a channel.  See if we need to op/etc. them.
 115  *  Use this for JOIN or CREATE.
 116  */
 117
 118 void cs_handlejoin(int hooknum, void *arg) {
 119   void **arglist=(void **)arg;
 120   channel *cp=(channel *)arglist[0];
 121   nick *np=(nick *)arglist[1];
 122   regchan *rcp;
 123   reguser *rup;
 124   regchanuser *rcup=NULL;
 125   chanindex *cip;
 126   int iscreate, isopped;
 127   int dowelcome=0;
 128   unsigned long *lp;
 129
 130   short modes=0;
 131
 132   /* If not registered or suspended, ignore */
 133   if (!(rcp=cp->index->exts[chanservext]) || CIsSuspended(rcp))
 134     return;
 135
 136   cip=cp->index;
 137
 138   rcp->tripjoins++;
 139   rcp->totaljoins++;
 140   if (cp->users->totalusers > rcp->maxusers)
 141     rcp->maxusers=cp->users->totalusers;
 142   if (cp->users->totalusers > rcp->tripusers)
 143     rcp->tripusers=cp->users->totalusers;
 144
 145   /* If their auth is deleted, pretend they don't exist */
 146   rup=getreguserfromnick(np);
 147   if (rup && (rup->status & QUSTAT_DEAD))
 148     rup=NULL;
 149
 150   if (rup && (rcup=findreguseronchannel(rcp,rup)) && CUKnown(rcup) && cp->users->totalusers >= 3)
 151     rcp->lastactive=time(NULL);
 152
 153   /* Update last use time */
 154   if (rcup)
 155     rcup->usetime=getnettime();
 156
 157   if (rcp->lastcountersync < (time(NULL) - COUNTERSYNCINTERVAL)) {
 158     csdb_updatechannelcounters(rcp);
 159     rcp->lastcountersync=time(NULL);
 160   }
 161
 162   /* OK, this may be a CREATE but it's possible we have already bursted onto
 163    * the channel and deopped them.  So let's just check that out now.
 164    *
 165    * There's a distinction between "is it a create?" and "are they opped
 166    * already?", since we need to send the generic "This is a Q9 channel"
 167    * message on create even if we already deopped them. */
 168   if (hooknum==HOOK_CHANNEL_CREATE) {
 169     iscreate=1;
 170     if ((lp=getnumerichandlefromchanhash(cp->users, np->numeric)) && (*lp & CUMODE_OP))
 171       isopped=1;
 172     else
 173       isopped=0;
 174   } else {
 175     isopped=iscreate=0;
 176   }
 177
 178   /* Check for "Q ban" */
 179   if (!IsService(np) && cs_bancheck(np,cp)) {
 180     /* They got kicked.. */
 181     return;
 182   }
 183
 184   /* Check for other ban lurking on channel which we are enforcing */
 185   if (!IsService(np) && CIsEnforce(rcp) && nickbanned_visible(np,cp)) {
 186     localkickuser(chanservnick,cp,np,"Banned.");
 187     return;
 188   }
 189
 190   /* Check for +b chanlev flag */
 191   if (!IsService(np) && rcup && CUIsBanned(rcup)) {
 192     cs_banuser(NULL, cip, np, NULL);
 193     cs_timerfunc(cip);
 194     return;
 195   }
 196
 197   /* Check for +k chan flag */
 198   if (!IsService(np) && CIsKnownOnly(rcp) && !(rcup && CUKnown(rcup))) {
 199     /* Don't ban if they are already "visibly" banned for some reason. */
 200     if (IsInviteOnly(cp) || (IsRegOnly(cp) && !IsAccount(np))) {
 201       localkickuser(chanservnick,cp,np,"Authorised users only.");
 202     } else {
 203       cs_banuser(NULL, cip, np, "Authorised users only.");
 204       cs_timerfunc(cip);
 205     }
 206     return;
 207   }
 208
 209   if (!rup || !rcup) {
 210     /* They're not a registered user, so deop if it is a create */
 211     if (isopped && !IsService(np)) {
 212       modes |= MC_DEOP;
 213     }
 214     if (CIsVoiceAll(rcp)) {
 215       modes |= MC_VOICE;
 216     }
 217
 218     if (CIsWelcome(rcp)) {
 219       dowelcome=1;  /* Send welcome message */
 220     } else if (!CIsJoined(rcp) && iscreate) {
 221       dowelcome=2;  /* Send a generic warning */
 222     }
 223   } else {
 224
 225     /* DB update removed for efficiency..
 226      * csdb_updatelastjoin(rcup); */
 227
 228     /* They are registered, let's see what to do with them */
 229     if (CUIsOp(rcup) && (CIsAutoOp(rcp) || CUIsAutoOp(rcup) || CUIsProtect(rcup) || CIsProtect(rcp)) &&
 230         !CUIsDeny(rcup)) {
 231       /* Auto op */
 232       if (!isopped) {
 233         modes |= MC_OP;
 234         cs_logchanop(rcp, np->nick, rup);
 235       }
 236     } else {
 237       /* Not auto op; deop them if they are opped and are not allowed them */
 238       if (isopped && !CUHasOpPriv(rcup) && !IsService(np)) {
 239         modes |= MC_DEOP;
 240       }
 241
 242       if (!CUIsQuiet(rcup) &&                                                /* Not +q */
 243           ((CUIsVoice(rcup) && (CIsAutoVoice(rcp) || CUIsAutoVoice(rcup) ||
 244                                 CIsProtect(rcp) || CUIsProtect(rcup))) ||   /* +[gp]v */
 245            (CIsVoiceAll(rcp)))) {                                 /* Or voice-all chan */
 246         modes |= MC_VOICE;
 247       }
 248     }
 249
 250     if (CIsWelcome(rcp) && !CUIsHideWelcome(rcup)) {
 251       dowelcome=1;
 252     }
 253   }
 254
 255   /* Actually do the mode change, if any */
 256   if (modes) {
 257     localsetmodes(chanservnick, cp, np, modes);
 258   }
 259
 260   switch(dowelcome) {
 261
 262   case 1: if (rcp->welcome)
 263             chanservsendmessage(np,"[%s] %s",cip->name->content, rcp->welcome->content);
 264           break;
 265
 266   case 2: if (chanservnick) {
 267             /* Channel x is protected by y */
 268             chanservstdmessage(np,QM_PROTECTED,cip->name->content,chanservnick->nick);
 269           }
 270           break;
 271   }
 272
 273   /* Display infoline if... (deep breath) user is registered, known on channel,
 274    * user,channel,chanlev all +i and user,channel,chanlev all -s AND Q online */
 275   if (rup && rcup &&
 276       CIsInfo(rcp) && UIsInfo(rcup->user) && CUIsInfo(rcup) &&
 277       !CIsNoInfo(rcp) && !UIsNoInfo(rcup->user) && !CUIsNoInfo(rcup) && chanservnick) {
 278     if (rcup->info && *(rcup->info->content)) {
 279       /* Chan-specific info */
 280       sendmessagetochannel(chanservnick, cp, "[%s] %s",np->nick, rcup->info->content);
 281     } else if (rup->info && *(rup->info->content)) {
 282       /* Default info */
 283       sendmessagetochannel(chanservnick, cp, "[%s] %s",np->nick, rup->info->content);
 284     }
 285   }
 286 }
 287
 288 /* cs_handlemodechange:
 289  *  Handle mode change on channel
 290  */
 291
 292 void cs_handlemodechange(int hooknum, void *arg) {
 293   void **arglist=(void **)arg;
 294   channel *cp=(channel *)arglist[0];
 295   long changeflags=(long)arglist[2];
 296   regchan *rcp;
 297
 298   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 299     return;
 300
 301   if (changeflags & MODECHANGE_MODES)
 302     rcp->status |= QCSTAT_MODECHECK;
 303
 304   if (changeflags & MODECHANGE_USERS)
 305     rcp->status |= QCSTAT_OPCHECK;
 306
 307   if (changeflags & MODECHANGE_BANS)
 308     rcp->status |= QCSTAT_BANCHECK;
 309
 310   cs_timerfunc(rcp->index);
 311 }
 312
 313 void cs_handleburst(int hooknum, void *arg) {
 314   channel *cp=(channel *)arg;
 315   regchan *rcp;
 316
 317   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 318     return;
 319
 320   /* Check everything at some future time */
 321   /* If autolimit is on, make sure the limit gets reset at that point too */
 322   if (CIsAutoLimit(rcp)) {
 323     rcp->limit=0;
 324   }
 325   cs_schedupdate(cp->index, 1, 5);
 326   rcp->status |= (QCSTAT_OPCHECK | QCSTAT_MODECHECK | QCSTAT_BANCHECK);
 327   rcp->lastbancheck=0; /* Force re-check of all bans on channel */
 328 }
 329
 330 /* cs_handleopchange:
 331  *  Handle [+-][ov] event
 332  */
 333
 334 void cs_handleopchange(int hooknum, void *arg) {
 335   void **arglist=(void **)arg;
 336   channel *cp=(channel *)arglist[0];
 337   regchan *rcp;
 338   regchanuser *rcup;
 339   reguser *rup;
 340   nick *target=(nick *)arglist[2];
 341   short modes=0;
 342
 343   /* Check that the channel is registered and active */
 344   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 345     return;
 346
 347   rup=getreguserfromnick(target);
 348
 349   switch(hooknum) {
 350     case HOOK_CHANNEL_OPPED:
 351       if (CIsBitch(rcp) && !IsService(target)) {
 352         if (!rup || (rcup=findreguseronchannel(rcp,rup))==NULL || !CUIsOp(rcup) || CUIsDeny(rcup))
 353           modes |= MC_DEOP;
 354       }
 355       break;
 356
 357     /* Open question:
 358      *  Should +b prevent extra voices?
 359      *  If not, should we have a seperate mode that does?
 360      */
 361
 362     case HOOK_CHANNEL_DEOPPED:
 363       if (CIsProtect(rcp)) {
 364         if (rup && (rcup=findreguseronchannel(rcp,rup))!=NULL && CUIsOp(rcup) && !CUIsDeny(rcup))
 365           modes |= MC_OP;
 366       }
 367       break;
 368
 369     case HOOK_CHANNEL_DEVOICED:
 370       if (CIsProtect(rcp)) {
 371         if (rcp && (rcup=findreguseronchannel(rcp,rup))!=NULL && CUIsVoice(rcup) && !CUIsQuiet(rcup))
 372           modes |= MC_VOICE;
 373       }
 374       break;
 375   }
 376
 377   if (modes)
 378     localsetmodes(chanservnick, cp, target, modes);
 379 }
 380
 381 /* cs_handlenewban:
 382  *  Handle ban being added to channel
 383  */
 384
 385 void cs_handlenewban(int hooknum, void *arg) {
 386   void **arglist=(void **)arg;
 387   regchan *rcp;
 388   channel *cp=(channel *)arglist[0];
 389   chanban *cbp;
 390   int i;
 391   nick *np;
 392
 393   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 394     return;
 395
 396   if ((cbp=cp->bans)==NULL) {
 397     Error("chanserv",ERR_WARNING,"Told ban added but no bans on channel?");
 398     return;
 399   }
 400
 401   if (CIsEnforce(rcp)) {
 402     for (i=0;i<cp->users->hashsize;i++) {
 403       if (cp->users->content[i]!=nouser) {
 404         if ((np=getnickbynumeric(cp->users->content[i]))==NULL) {
 405           Error("chanserv",ERR_WARNING,"Found user on channel %s who doesn't exist!",cp->index->name->content);
 406           continue;
 407         }
 408         if (!IsService(np) && nickmatchban_visible(np,cbp)) {
 409           localkickuser(chanservnick,cp,np,"Banned.");
 410         }
 411       }
 412     }
 413   }
 414 }
 415
 416 /* cs_handletopicchange:
 417  *  Handle topic change on channel
 418  */
 419
 420 void cs_handletopicchange(int hooknum, void *arg) {
 421   void **arglist=(void **)arg;
 422   channel *cp=(channel *)arglist[0];
 423   regchan *rcp;
 424
 425   if ((rcp=cp->index->exts[chanservext])==NULL || CIsSuspended(rcp))
 426     return;
 427
 428   if (CIsForceTopic(rcp)) {
 429     if (rcp->topic) {
 430       /* Forced topic: change it back */
 431       localsettopic(chanservnick, cp, rcp->topic->content);
 432     }
 433   } else if (CIsTopicSave(rcp)) {
 434     if (rcp->topic) {
 435       freesstring(rcp->topic);
 436     }
 437     if (cp->topic) {
 438       rcp->topic=getsstring(cp->topic->content,TOPICLEN);
 439     } else {
 440       rcp->topic=NULL;
 441     }
 442     csdb_updatetopic(rcp);
 443   }
 444 }