localuser/localuser.c

   1 /* localuser.c */
   2
   3 #include "../nick/nick.h"
   4 #include "../lib/base64.h"
   5 #include "../lib/sstring.h"
   6 #include "../irc/irc.h"
   7 #include "../irc/irc_config.h"
   8 #include "../core/hooks.h"
   9 #include "../core/error.h"
  10 #include "../lib/version.h"
  11 #include "localuser.h"
  12
  13 #include <string.h>
  14 #include <stdarg.h>
  15 #include <stdio.h>
  16 #include <inttypes.h>
  17
  18 MODULE_VERSION("");
  19
  20 int currentlocalunum;
  21 UserMessageHandler umhandlers[MAXLOCALUSER+1];
  22
  23 typedef struct pendingkill {
  24   nick *source, *target;
  25   sstring *reason;
  26   struct pendingkill *next;
  27 } pendingkill;
  28
  29 pendingkill *pendingkilllist;
  30
  31 void checklocalkill(int hooknum, void *nick);
  32 void clearpendingkills(int hooknum, void *arg);
  33 void checkpendingkills(int hooknum, void *arg);
  34 void _killuser(nick *source, nick *target, char *reason);
  35
  36 void _init() {
  37   int i;
  38
  39   for (i=0;i<=MAXLOCALUSER;i++) {
  40     umhandlers[i]=NULL;
  41   }
  42   currentlocalunum=1;
  43   pendingkilllist=NULL;
  44   registerhook(HOOK_IRC_SENDBURSTNICKS,&sendnickburst);
  45   registerhook(HOOK_NICK_KILL,&checklocalkill);
  46   registerhook(HOOK_NICK_LOSTNICK,&checkpendingkills); /* CHECK ME -> should this hook KILL or LOSTNICK or BOTH */
  47   registerhook(HOOK_CORE_ENDOFHOOKSQUEUE,&clearpendingkills);
  48   registerserverhandler("P",&handleprivatemsgcmd,2);
  49   registerserverhandler("O",&handleprivatenoticecmd, 2);
  50 }
  51
  52 void _fini() {
  53   pendingkill *pk;
  54
  55   for (pk=pendingkilllist;pk;pk=pendingkilllist) {
  56     pendingkilllist = pk->next;
  57     freesstring(pk->reason);
  58     free(pk);
  59   }
  60
  61   deregisterhook(HOOK_IRC_SENDBURSTNICKS,&sendnickburst);
  62   deregisterhook(HOOK_NICK_KILL,&checklocalkill);
  63   deregisterhook(HOOK_NICK_LOSTNICK,&checkpendingkills); /* CHECK ME -> should this hook KILL or LOSTNICK or BOTH */
  64   deregisterhook(HOOK_CORE_ENDOFHOOKSQUEUE,&clearpendingkills);
  65
  66   deregisterserverhandler("P",&handleprivatemsgcmd);
  67   deregisterserverhandler("O",&handleprivatenoticecmd);
  68 }
  69
  70 /*
  71  * registerlocaluserflags:
  72  *  This function creates a local user, and broadcasts it's existence to the net (if connected).
  73  */
  74
  75 nick *registerlocaluserflags(char *nickname, char *ident, char *host, char *realname, char *authname, unsigned long authid, flag_t accountflags, flag_t umodes, UserMessageHandler handler) {
  76   int i;
  77   nick *newuser,*np;
  78   struct irc_in_addr ipaddress;
  79
  80   i=0;
  81   currentlocalunum=(currentlocalunum+1)%262142;
  82   while (servernicks[numerictolong(mynumeric->content,2)][currentlocalunum&MAXLOCALUSER]!=NULL) {
  83     /* Numeric 262143 on our server is used for "nouser" by the channels module, so cannot be allocated */
  84     currentlocalunum=(currentlocalunum+1)%262142;
  85     if (++i>MAXLOCALUSER) {
  86       return NULL;
  87     }
  88   }
  89
  90   /* This code is very similar to stuff in nick.c... */
  91   newuser=newnick();
  92   newuser->numeric=(numerictolong(mynumeric->content,2)<<18)|(currentlocalunum);
  93   strncpy(newuser->nick,nickname,NICKLEN);
  94   newuser->nick[NICKLEN]='\0';
  95   strncpy(newuser->ident,ident,USERLEN);
  96   newuser->ident[USERLEN]='\0';
  97   newuser->host=findorcreatehost(host);
  98   newuser->realname=findorcreaterealname(realname);
  99   newuser->nextbyhost=newuser->host->nicks;
 100   newuser->host->nicks=newuser;
 101   newuser->nextbyrealname=newuser->realname->nicks;
 102   newuser->realname->nicks=newuser;
 103   newuser->umodes=umodes;
 104
 105   memset(&ipaddress, 0, sizeof(ipaddress));
 106   ((unsigned short *)(ipaddress.in6_16))[5] = 65535;
 107   ((unsigned short *)(ipaddress.in6_16))[6] = 127;
 108   ((unsigned char *)(ipaddress.in6_16))[14] = 1;
 109   ((unsigned char *)(ipaddress.in6_16))[15] = (currentlocalunum%253)+1;
 110
 111   memcpy(&newuser->ipaddress, &ipaddress, sizeof(ipaddress));
 112
 113   newuser->ipnode = refnode(iptree, &ipaddress, PATRICIA_MAXBITS);
 114   node_increment_usercount(newuser->ipnode);
 115
 116   newuser->timestamp=getnettime();
 117   newuser->shident=NULL;
 118   newuser->sethost=NULL;
 119   newuser->away=NULL;
 120   newuser->marker=0;
 121   memset(newuser->exts, 0, MAXNICKEXTS * sizeof(void *));
 122
 123   if (IsOper(newuser)) {
 124     newuser->opername = getsstring("-", ACCOUNTLEN);
 125   } else {
 126     newuser->opername = NULL;
 127   }
 128
 129   newuser->accountts=0;
 130   newuser->auth=NULL;
 131   newuser->authname=NULLAUTHNAME;
 132   if (IsAccount(newuser)) {
 133     newuser->accountts=newuser->timestamp;
 134     if (authid) {
 135       newuser->auth=findorcreateauthname(authid, authname);
 136       newuser->authname=newuser->auth->name;
 137       newuser->auth->usercount++;
 138       newuser->nextbyauthname=newuser->auth->nicks;
 139       newuser->auth->nicks=newuser;
 140       newuser->auth->flags=accountflags;
 141     } else {
 142       /*
 143          this is done for three reasons:
 144          1: so I don't have to change 500 pieces of code
 145          2: so services can be authed with special reserved ids
 146          3: saves space over the old authname per user method
 147        */
 148       newuser->authname=malloc(strlen(authname) + 1);
 149       strcpy(newuser->authname,authname);
 150     }
 151   }
 152
 153   newuser->cloak_count = 0;
 154   newuser->cloak_extra = NULL;
 155   newuser->message = NULL;
 156
 157   if (connected) {
 158     /* Check for nick collision */
 159     if ((np=getnickbynick(nickname))!=NULL) {
 160       /* Make sure we will win the collision */
 161       newuser->timestamp=(np->timestamp-1);
 162       killuser(NULL, np, "Nick collision");
 163     }
 164     sendnickmsg(newuser);
 165   }
 166
 167   if (handler!=NULL) {
 168     umhandlers[(currentlocalunum&MAXLOCALUSER)]=handler;
 169   }
 170
 171   *(gethandlebynumeric(newuser->numeric))=newuser;
 172   addnicktohash(newuser);
 173   triggerhook(HOOK_NICK_NEWNICK,newuser);
 174
 175   return newuser;
 176 }
 177
 178 /*
 179  * renamelocaluser:
 180  *  This function changes the name of a given local user
 181  */
 182
 183 int renamelocaluser(nick *np, char *newnick) {
 184   nick *np2;
 185   char ipbuf[25];
 186   time_t timestamp=getnettime();
 187   void *harg[2];
 188   char oldnick[NICKLEN+1];
 189
 190   if (!np)
 191     return -1;
 192
 193   if (strlen(newnick) > NICKLEN)
 194     return -1;
 195
 196   if (homeserver(np->numeric)!=mylongnum)
 197     return -1;
 198
 199   strncpy(oldnick,np->nick,NICKLEN);
 200   oldnick[NICKLEN]='\0';
 201   harg[0]=(void *)np;
 202   harg[1]=(void *)oldnick;
 203
 204   if ((np2=getnickbynick(newnick))) {
 205     if (np2==np) {
 206       /* Case only name change */
 207       strncpy(np->nick,newnick,NICKLEN);
 208       np->nick[NICKLEN]='\0';
 209       irc_send("%s N %s %jd",iptobase64(ipbuf, &(np->ipaddress), sizeof(ipbuf), 1),np->nick,(intmax_t)np->timestamp);
 210       triggerhook(HOOK_NICK_RENAME,harg);
 211       return 0;
 212     } else {
 213       /* Kill other user and drop through */
 214       timestamp=np2->timestamp-1;
 215       killuser(NULL, np2, "Nick collision");
 216     }
 217   }
 218
 219   np->timestamp=timestamp;
 220   removenickfromhash(np);
 221   strncpy(np->nick,newnick,NICKLEN);
 222   np->nick[NICKLEN]='\0';
 223   addnicktohash(np);
 224   irc_send("%s N %s %jd",longtonumeric(np->numeric,5),np->nick,(intmax_t)np->timestamp);
 225   triggerhook(HOOK_NICK_RENAME,harg);
 226
 227   return 0;
 228 }
 229
 230 /*
 231  * deregisterlocaluser:
 232  *  This function removes the given local user from the network
 233  */
 234
 235 int deregisterlocaluser(nick *np, char *reason) {
 236   long numeric;
 237   char reasonstr[512];
 238   void *harg[2];
 239
 240   if (np==NULL || (homeserver(np->numeric)!=mylongnum)) {
 241     /* Non-existent user, or user not on this server */
 242     return -1;
 243   }
 244
 245   if (reason==NULL || *reason=='\0') {
 246     sprintf(reasonstr,"Quit");
 247   } else {
 248     snprintf(reasonstr,510,"Quit: %s",reason);
 249   }
 250
 251   harg[0]=np;
 252   harg[1]=reasonstr;
 253
 254   triggerhook(HOOK_NICK_QUIT, harg);
 255
 256   numeric=np->numeric;
 257   umhandlers[np->numeric&MAXLOCALUSER]=NULL;
 258   deletenick(np);
 259   if (connected) {
 260     irc_send("%s Q :%s",longtonumeric(numeric,5),reasonstr);
 261   }
 262
 263   return 0;
 264 }
 265
 266 /*
 267  * hooklocaluserhandler:
 268  *  This function adds a new handler to the hook chain for a local user
 269  *  THIS RELIES ON MODULES BEING UNLOADED IN THE CORRECT ORDER.
 270  */
 271 UserMessageHandler hooklocaluserhandler(nick *np, UserMessageHandler newhandler) {
 272   UserMessageHandler oldhandler = NULL;
 273   if (np==NULL || (homeserver(np->numeric)!=mylongnum)) {
 274     /* Non-existent user, or user not on this server */
 275     return NULL;
 276   }
 277   oldhandler = umhandlers[np->numeric&MAXLOCALUSER];
 278   umhandlers[np->numeric&MAXLOCALUSER]=newhandler;
 279   return oldhandler;
 280 }
 281
 282 /*
 283  * sendnickmsg:
 284  *  Sends details of a given local nick to the network.
 285  */
 286
 287 void sendnickmsg(nick *np) {
 288   char numericbuf[6];
 289   char ipbuf[25], operbuf[ACCOUNTLEN + 5];
 290   char accountbuf[100];
 291
 292   strncpy(numericbuf,longtonumeric(np->numeric,5),5);
 293   numericbuf[5]='\0';
 294
 295   if(IsOper(np) && (serverlist[myhub].flags & SMODE_OPERNAME)) {
 296     snprintf(operbuf,sizeof(operbuf)," %s",np->opername?np->opername->content:"-");
 297   } else {
 298     operbuf[0] = '\0';
 299   }
 300
 301   accountbuf[0]='\0';
 302   if (IsAccount(np)) {
 303     if (np->auth) {
 304       if(np->auth->flags) {
 305         snprintf(accountbuf,sizeof(accountbuf)," %s:%ld:%lu:%"PRIu64,np->authname,np->accountts,np->auth->userid,np->auth->flags);
 306       } else {
 307         snprintf(accountbuf,sizeof(accountbuf)," %s:%ld:%lu",np->authname,np->accountts,np->auth->userid);
 308       }
 309     } else if(np->authname) {
 310       snprintf(accountbuf,sizeof(accountbuf)," %s:%ld:0",np->authname,np->accountts);
 311     }
 312   }
 313
 314   irc_send("%s N %s 1 %ld %s %s %s%s%s %s %s :%s",
 315     mynumeric->content,np->nick,np->timestamp,np->ident,np->host->name->content,
 316     printflags(np->umodes,umodeflags),operbuf,accountbuf,iptobase64(ipbuf,&(np->ipaddress),
 317     sizeof(ipbuf),1),numericbuf,np->realname->name->content);
 318 }
 319
 320 void sendnickburst(int hooknum, void *arg) {
 321   /* Send nick messages for all local users */
 322   nick **nh;
 323   int i;
 324
 325   nh=servernicks[numerictolong(mynumeric->content,2)];
 326   for (i=0;i<=MAXLOCALUSER;i++) {
 327     if (nh[i]!=NULL) {
 328       sendnickmsg(nh[i]);
 329     }
 330   }
 331 }
 332
 333 /* Check for a kill of a local user */
 334 void checklocalkill(int hooknum, void *arg) {
 335   void **args=arg;
 336   nick *target=args[0];
 337   char *reason=args[1];
 338   long numeric;
 339
 340   void *myargs[1];
 341   myargs[0]=reason;
 342
 343
 344   numeric=((nick *)target)->numeric;
 345
 346   if (homeserver(numeric)==mylongnum) {
 347     if (umhandlers[(numeric)&MAXLOCALUSER]!=NULL) {
 348       (umhandlers[(numeric)&MAXLOCALUSER])((nick *)target,LU_KILLED,myargs);
 349     }
 350   }
 351 }
 352
 353 int handleprivatemsgcmd(void *source, int cargc, char **cargv) {
 354   return handlemessageornotice(source, cargc, cargv, 0);
 355 }
 356
 357 int handleprivatenoticecmd(void *source, int cargc, char **cargv) {
 358   return handlemessageornotice(source, cargc, cargv, 1);
 359 }
 360
 361 /* Handle privmsg or notice command addressed to user */
 362 int handlemessageornotice(void *source, int cargc, char **cargv, int isnotice) {
 363   nick *sender;
 364   nick *target;
 365   char *ch;
 366   char targetnick[NICKLEN+1];
 367   int foundat;
 368   void *nargs[3];
 369   int i;
 370
 371   /* Should have target and message */
 372   if (cargc<2) {
 373     return CMD_OK;
 374   }
 375
 376   if ((sender=getnickbynumericstr((char *)source))==NULL) {
 377     Error("localuser",ERR_WARNING,"PRIVMSG from non existant user %s",(char *)source);
 378     return CMD_OK;
 379   }
 380
 381   freesstring(sender->message);
 382   sender->message = getsstring(cargv[1], 512);
 383
 384   nargs[0] = sender;
 385   nargs[1] = cargv[1];
 386   nargs[2] = (void *)(uintptr_t)isnotice;
 387   triggerhook(HOOK_NICK_MESSAGE, nargs);
 388
 389   if (cargv[0][0]=='#' || cargv[0][0]=='+') {
 390     /* Channel message/notice */
 391     return CMD_OK;
 392   }
 393
 394   /* Check for a "secure" message (foo@bar) */
 395   foundat=0;
 396   for (i=0,ch=cargv[0];(i<=NICKLEN) && (*ch);i++,ch++) {
 397     if (*ch=='@') {
 398       targetnick[i]='\0';
 399       foundat=1;
 400       break;
 401     } else {
 402       targetnick[i]=*ch;
 403     }
 404   }
 405
 406   if (!foundat) { /* Didn't find an @ sign, assume it's a numeric */
 407     if ((target=getnickbynumericstr(cargv[0]))==NULL) {
 408       Error("localuser",ERR_DEBUG,"Couldn't find target for %s",cargv[0]);
 409       return CMD_OK;
 410     }
 411   } else { /* Did find @, do a lookup by nick */
 412     if ((target=getnickbynick(targetnick))==NULL) {
 413       Error("localuser",ERR_DEBUG,"Couldn't find target for %s",cargv[0]);
 414       irc_send(":%s 401 %s %s :No such nick",myserver->content,sender->nick,cargv[0]);
 415       return CMD_OK;
 416     }
 417   }
 418
 419   if (homeserver(target->numeric)!=mylongnum) {
 420     Error("localuser",ERR_WARNING,"Got message/notice for someone not on my server");
 421     irc_send(":%s 401 %s %s :No such nick",myserver->content,sender->nick,cargv[0]);
 422     return CMD_OK;
 423   }
 424
 425   if (foundat && !IsService(target)) {
 426     Error("localuser",ERR_DEBUG,"Received secure message for %s, but user is not a service",cargv[0]);
 427     irc_send(":%s 401 %s %s :No such nick",myserver->content,sender->nick,cargv[0]);
 428     return CMD_OK;
 429   }
 430
 431   if (umhandlers[(target->numeric)&MAXLOCALUSER]==NULL) {
 432     /* No handler anyhow.. */
 433     return CMD_OK;
 434   }
 435
 436   /* Dispatch the message. */
 437   nargs[0]=(void *)sender;
 438   nargs[1]=(void *)cargv[1];
 439   (umhandlers[(target->numeric)&MAXLOCALUSER])(target,isnotice?LU_PRIVNOTICE:(foundat?LU_SECUREMSG:LU_PRIVMSG),nargs);
 440
 441   return CMD_OK;
 442 }
 443
 444 /* Send message to user */
 445 void sendmessagetouser(nick *source, nick *target, char *format, ... ) {
 446   char buf[BUFSIZE];
 447   char senderstr[6];
 448   va_list va;
 449
 450   longtonumeric2(source->numeric,5,senderstr);
 451
 452   va_start(va,format);
 453   /* 10 bytes of numeric, 5 bytes of fixed format + terminator = 17 bytes */
 454   /* So max sendable message is 495 bytes.  Of course, a client won't be able
 455    * to receive this.. */
 456
 457   vsnprintf(buf,BUFSIZE-17,format,va);
 458   va_end(va);
 459
 460   if (homeserver(target->numeric)!=mylongnum)
 461     irc_send("%s P %s :%s",senderstr,longtonumeric(target->numeric,5),buf);
 462 }
 463
 464 /* Send messageto server, we don't check, but noones going to want to put a server pointer in anyway... */
 465 void sendsecuremessagetouser(nick *source, nick *target, char *servername, char *format, ... ) {
 466   char buf[BUFSIZE];
 467   char senderstr[6];
 468   va_list va;
 469
 470   longtonumeric2(source->numeric,5,senderstr);
 471
 472   va_start(va,format);
 473   /* 10 bytes of numeric, 5 bytes of fixed format + terminator = 17 bytes */
 474   /* So max sendable message is 495 bytes.  Of course, a client won't be able
 475    * to receive this.. */
 476
 477   vsnprintf(buf,BUFSIZE-17,format,va);
 478   va_end(va);
 479
 480   if (homeserver(target->numeric)!=mylongnum)
 481     irc_send("%s P %s@%s :%s",senderstr,target->nick,servername,buf);
 482 }
 483
 484 /* Send notice to user */
 485 void sendnoticetouser(nick *source, nick *target, char *format, ... ) {
 486   char buf[BUFSIZE];
 487   char senderstr[6];
 488   va_list va;
 489
 490   longtonumeric2(source->numeric,5,senderstr);
 491
 492   va_start(va,format);
 493   /* 10 bytes of numeric, 5 bytes of fixed format + terminator = 17 bytes */
 494   /* So max sendable message is 495 bytes.  Of course, a client won't be able
 495    * to receive this.. */
 496
 497   vsnprintf(buf,BUFSIZE-17,format,va);
 498   va_end(va);
 499
 500   if (homeserver(target->numeric)!=mylongnum)
 501     irc_send("%s O %s :%s",senderstr,longtonumeric(target->numeric,5),buf);
 502 }
 503
 504 /* Kill user */
 505 void killuser(nick *source, nick *target, char *format, ... ) {
 506   char buf[BUFSIZE];
 507   va_list va;
 508   pendingkill *pk;
 509
 510   va_start(va, format);
 511   vsnprintf(buf, BUFSIZE-17, format, va);
 512   va_end (va);
 513
 514   if (hookqueuelength) {
 515     for (pk = pendingkilllist; pk; pk = pk->next)
 516       if (pk->target == target)
 517         return;
 518
 519     Error("localuser", ERR_DEBUG, "Adding pending kill for %s", target->nick);
 520     pk = (pendingkill *)malloc(sizeof(pendingkill));
 521     pk->source = source;
 522     pk->target = target;
 523     pk->reason = getsstring(buf, BUFSIZE);
 524     pk->next = pendingkilllist;
 525     pendingkilllist = pk;
 526   } else {
 527     _killuser(source, target, buf);
 528   }
 529 }
 530
 531 void sethostuser(nick *target, char *ident, char *host) {
 532   irc_send("%s SH %s %s %s", mynumeric->content, longtonumeric(target->numeric, 5), ident, host);
 533 }
 534
 535 void _killuser(nick *source, nick *target, char *reason) {
 536   char senderstr[6];
 537   char sourcestring[HOSTLEN+NICKLEN+3];
 538   char reasonstr[512];
 539   void *args[2];
 540
 541   if (!source) {
 542     /* If we have a null nick, use the server.. */
 543     strcpy(senderstr, mynumeric->content);
 544     strcpy(sourcestring, myserver->content);
 545   } else {
 546     strcpy(senderstr, longtonumeric(source->numeric,5));
 547     sprintf(sourcestring,"%s!%s",source->host->name->content, source->nick);
 548   }
 549
 550   snprintf(reasonstr,512,"%s (%s)",sourcestring,reason);
 551   reasonstr[511]='\0';
 552
 553   irc_send("%s D %s :%s",senderstr,longtonumeric(target->numeric,5),reasonstr);
 554
 555   args[0]=target;
 556   args[1]=reasonstr;
 557   triggerhook(HOOK_NICK_KILL, args);
 558
 559   deletenick(target);
 560 }
 561
 562 void clearpendingkills(int hooknum, void *arg) {
 563   pendingkill *pk;
 564
 565   pk = pendingkilllist;
 566   while (pk) {
 567     pendingkilllist = pk->next;
 568
 569     if (pk->target) {
 570       Error("localuser", ERR_DEBUG, "Processing pending kill for %s", pk->target->nick);
 571       _killuser(pk->source, pk->target, pk->reason->content);
 572     }
 573
 574     freesstring(pk->reason);
 575     free(pk);
 576     pk = pendingkilllist;
 577   }
 578 }
 579
 580 void checkpendingkills(int hooknum, void *arg) {
 581   nick *np = (nick *)arg;
 582   pendingkill *pk;
 583
 584   for (pk=pendingkilllist; pk; pk = pk->next) {
 585     if (pk->source == np) {
 586       Error("localuser", ERR_INFO, "Pending kill source %s got deleted, NULL'ing source for pending kill", np->nick);
 587       pk->source = NULL;
 588     }
 589     if (pk->target == np) {
 590       Error("localuser", ERR_INFO, "Pending kill target %s got deleted, NULL'ing target for pending kill", np->nick);
 591       pk->target = NULL;
 592     }
 593   }
 594 }
 595
 596 void sendaccountmessage(nick *np) {
 597   if (connected && IsAccount(np)) {
 598     if (np->auth) {
 599       if (np->auth->flags) {
 600         irc_send("%s AC %s %s %ld %lu %"PRIu64,mynumeric->content, longtonumeric(np->numeric,5), np->authname, np->accountts, np->auth->userid, np->auth->flags);
 601       } else {
 602         irc_send("%s AC %s %s %ld %lu",mynumeric->content, longtonumeric(np->numeric,5), np->authname, np->accountts, np->auth->userid);
 603       }
 604     } else {
 605       irc_send("%s AC %s %s %ld 0",mynumeric->content, longtonumeric(np->numeric,5), np->authname, np->accountts);
 606     }
 607   }
 608 }
 609
 610 /* Auth user, don't use to set flags after authing */
 611 void localusersetaccount(nick *np, char *accname, unsigned long accid, u_int64_t accountflags, time_t authTS) {
 612   if (IsAccount(np)) {
 613     Error("localuser",ERR_WARNING,"Tried to set account on user %s already authed", np->nick);
 614     return;
 615   }
 616
 617   SetAccount(np);
 618   np->accountts=authTS?authTS:getnettime();
 619
 620   if (accid) {
 621     np->auth=findorcreateauthname(accid, accname);
 622     np->auth->usercount++;
 623     np->authname=np->auth->name;
 624     np->nextbyauthname=np->auth->nicks;
 625     np->auth->nicks=np;
 626     np->auth->flags=accountflags;
 627   } else {
 628     np->auth=NULL;
 629     np->authname=malloc(strlen(accname) + 1);
 630     strcpy(np->authname,accname);
 631   }
 632
 633   sendaccountmessage(np);
 634
 635   triggerhook(HOOK_NICK_ACCOUNT, np);
 636 }
 637
 638 void localusersetumodes(nick *np, flag_t newmodes) {
 639   if (connected) {
 640     irc_send("%s M %s %s", longtonumeric(np->numeric,5), np->nick, printflagdiff(np->umodes, newmodes, umodeflags));
 641   }
 642
 643   np->umodes = newmodes;
 644 }
 645
 646 void localusersetaccountflags(authname *anp, u_int64_t accountflags) {
 647   void *arg[2];
 648   nick *np;
 649   u_int64_t oldflags = anp->flags;
 650
 651   arg[0] = anp;
 652   arg[1] = &oldflags;
 653   anp->flags = accountflags;
 654
 655   for(np=anp->nicks;np;np=np->nextbyauthname)
 656     sendaccountmessage(np);
 657
 658   triggerhook(HOOK_AUTH_FLAGSUPDATED, arg);
 659 }
 660
 661 void localuseraddcloaktarget(nick *np, nick *target) {
 662   char snumeric[10], tnumeric[10];
 663
 664   strcpy(snumeric, longtonumeric(np->numeric,5));
 665   strcpy(tnumeric, longtonumeric(target->numeric,5));
 666
 667   irc_send("%s CA %s", snumeric, tnumeric);
 668
 669   addcloaktarget(np, target);
 670 }
 671
 672 void localuserclearcloaktargets(nick *np) {
 673   irc_send("%s CU", longtonumeric(np->numeric,5));
 674   clearcloaktargets(np);
 675 }
 676