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