control/control.c

   1 /*
   2  * This is the first client module for newserv :)
   3  *
   4  * A very simple bot which should give people some ideas for how to
   5  * implement stuff on this thing
   6  */
   7
   8 #include "../irc/irc_config.h"
   9 #include "../parser/parser.h"
  10 #include "../localuser/localuser.h"
  11 #include "../localuser/localuserchannel.h"
  12 #include "../nick/nick.h"
  13 #include "../lib/sstring.h"
  14 #include "../core/config.h"
  15 #include "../irc/irc.h"
  16 #include "../lib/splitline.h"
  17 #include "../channel/channel.h"
  18 #include "../lib/flags.h"
  19 #include "../core/schedule.h"
  20 #include "../lib/base64.h"
  21 #include "../core/modules.h"
  22 #include "../lib/version.h"
  23 #include "control.h"
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdarg.h>
  28
  29 MODULE_VERSION("");
  30
  31 nick *hooknick;
  32
  33 nick *mynick;
  34
  35 CommandTree *controlcmds;
  36 ControlMsg controlreply;
  37 ControlWall controlwall;
  38
  39 void handlemessages(nick *target, int messagetype, void **args);
  40 int controlstatus(void *sender, int cargc, char **cargv);
  41 void controlconnect(void *arg);
  42 int controlwhois(void *sender, int cargc, char **cargv);
  43 int controlchannel(void *sender, int cargc, char **cargv);
  44 int relink(void *sender, int cargc, char **cargv);
  45 int die(void *sender, int cargc, char **cargv);
  46 int controlinsmod(void *sender, int cargc, char **cargv);
  47 int controllsmod(void *sender, int cargc, char **cargv);
  48 int controlrehash(void *sender, int cargc, char **cargv);
  49 int controlreload(void *sender, int cargc, char **cargv);
  50 int controlhelpcmd(void *sender, int cargc, char **cargv);
  51 void controlnoticeopers(flag_t permissionlevel, flag_t noticelevel, char *format, ...);
  52
  53 void _init() {
  54   controlcmds=newcommandtree();
  55   controlreply=&controlmessage;
  56   controlwall=&controlnoticeopers;
  57
  58   registercontrolhelpcmd("status",NO_DEVELOPER,1,&controlstatus,"Usage: status ?level?\nDisplays status information, increasing level gives more verbose information.");
  59   registercontrolhelpcmd("whois",NO_OPERED,1,&controlwhois,"Usage: whois <nickname|#numeric>\nDisplays lots of information about the specified nickname or numeric.");
  60   registercontrolhelpcmd("channel",NO_OPER,1,&controlchannel,"Usage: channel <#channel>\nDisplays channel information.");
  61   registercontrolhelpcmd("relink",NO_DEVELOPER,1,&relink,"Usage: relink\nRelinks service to the network.");
  62   registercontrolhelpcmd("die",NO_DEVELOPER,1,&die,"Usage: die <reason>\nTerminates the service.");
  63   registercontrolhelpcmd("insmod",NO_DEVELOPER,1,&controlinsmod,"Usage: insmod <module>\nAdds a module to the running instance.");
  64   registercontrolhelpcmd("rmmod",NO_DEVELOPER,1,&controlrmmod,"Usage: rmmod <module>\nRemoves a module from the running instance.");
  65   registercontrolhelpcmd("lsmod",NO_DEVELOPER,0,&controllsmod,"Usage: lsmod\nLists currently running modules.");
  66   registercontrolhelpcmd("rehash",NO_DEVELOPER,1,&controlrehash,"Usage: rehash\nReloads configuration file.");
  67   registercontrolhelpcmd("showcommands",NO_ACCOUNT,0,&controlshowcommands,"Usage: showcommands\nShows all registered commands.");
  68   registercontrolhelpcmd("reload",NO_DEVELOPER,1,&controlreload,"Usage: reload <module>\nReloads specified module.");
  69   registercontrolhelpcmd("help",NO_ANYONE,1,&controlhelpcmd,"Usage: help <command>\nShows help for specified command.");
  70
  71   scheduleoneshot(time(NULL)+1,&controlconnect,NULL);
  72 }
  73
  74 void _fini() {
  75   deleteallschedules(&controlconnect);
  76   if (mynick) {
  77     deregisterlocaluser(mynick,"Leaving");
  78   }
  79
  80   deregistercontrolcmd("status",&controlstatus);
  81   deregistercontrolcmd("whois",&controlwhois);
  82   deregistercontrolcmd("channel",&controlchannel);
  83   deregistercontrolcmd("relink",&relink);
  84   deregistercontrolcmd("die",&die);
  85   deregistercontrolcmd("insmod",&controlinsmod);
  86   deregistercontrolcmd("rmmod",&controlrmmod);
  87   deregistercontrolcmd("lsmod",&controllsmod);
  88   deregistercontrolcmd("rehash",&controlrehash);
  89   deregistercontrolcmd("showcommands",&controlshowcommands);
  90   deregistercontrolcmd("reload",&controlreload);
  91   deregistercontrolcmd("help",&controlhelpcmd);
  92
  93   destroycommandtree(controlcmds);
  94 }
  95
  96 void registercontrolhelpcmd(const char *name, int level, int maxparams, CommandHandler handler, char *help) {
  97   addcommandhelptotree(controlcmds,name,level,maxparams,handler,help);
  98 }
  99
 100 int deregistercontrolcmd(const char *name, CommandHandler handler) {
 101   return deletecommandfromtree(controlcmds, name, handler);
 102 }
 103
 104 void controlconnect(void *arg) {
 105   sstring *cnick, *myident, *myhost, *myrealname, *myauthname;
 106   channel *cp;
 107
 108   cnick=getcopyconfigitem("control","nick","C",NICKLEN);
 109   myident=getcopyconfigitem("control","ident","control",NICKLEN);
 110   myhost=getcopyconfigitem("control","hostname",myserver->content,HOSTLEN);
 111   myrealname=getcopyconfigitem("control","realname","NewServ Control Service",REALLEN);
 112   myauthname=getcopyconfigitem("control","authname","C",ACCOUNTLEN);
 113
 114   mynick=registerlocaluser(cnick->content,myident->content,myhost->content,myrealname->content,myauthname->content,UMODE_SERVICE|UMODE_DEAF|UMODE_OPER|UMODE_ACCOUNT|UMODE_INV,&handlemessages);
 115   triggerhook(HOOK_CONTROL_REGISTERED, mynick);
 116   cp=findchannel("#twilightzone");
 117   if (!cp) {
 118     localcreatechannel(mynick,"#twilightzone");
 119   } else {
 120     localjoinchannel(mynick,cp);
 121     localgetops(mynick,cp);
 122   }
 123
 124   freesstring(cnick);
 125   freesstring(myident);
 126   freesstring(myhost);
 127   freesstring(myrealname);
 128   freesstring(myauthname);
 129 }
 130
 131 void handlestats(int hooknum, void *arg) {
 132   controlreply(hooknick,"%s",(char *)arg);
 133 }
 134
 135 int controlstatus(void *sender, int cargc, char **cargv) {
 136   unsigned long level=5;
 137   hooknick=(nick *)sender;
 138
 139   if (cargc>0) {
 140     level=strtoul(cargv[0],NULL,10);
 141   }
 142
 143   registerhook(HOOK_CORE_STATSREPLY,&handlestats);
 144
 145   triggerhook(HOOK_CORE_STATSREQUEST,(void *)level);
 146   deregisterhook(HOOK_CORE_STATSREPLY,&handlestats);
 147   return CMD_OK;
 148 }
 149
 150 int controlrehash(void *sender, int cargc, char **cargv) {
 151   nick *np=(nick *)sender;
 152
 153   controlreply(np,"Rehashing the config file.");
 154
 155   rehashconfig();
 156   triggerhook(HOOK_CORE_REHASH,(void *)0);
 157   return CMD_OK;
 158 }
 159
 160 void handlewhois(int hooknum, void *arg) {
 161   controlreply(hooknick,"%s",(char *)arg);
 162 }
 163
 164 int controlwhois(void *sender, int cargc, char **cargv) {
 165   nick *target;
 166   channel **channels;
 167   char buf[BUFSIZE];
 168   int i;
 169
 170   if (cargc<1)
 171     return CMD_USAGE;
 172
 173   if (cargv[0][0]=='#') {
 174     if (!(target=getnickbynumericstr(cargv[0]+1))) {
 175       controlreply(sender,"Sorry, couldn't find numeric %s",cargv[0]+1);
 176       return CMD_ERROR;
 177     }
 178   } else {
 179     if ((target=getnickbynick(cargv[0]))==NULL) {
 180       controlreply((nick *)sender,"Sorry, couldn't find that user");
 181       return CMD_ERROR;
 182     }
 183   }
 184
 185   controlreply((nick *)sender,"Nick      : %s",target->nick);
 186   controlreply((nick *)sender,"Numeric   : %s",longtonumeric(target->numeric,5));
 187   controlreply((nick *)sender,"User@Host : %s@%s (%d user(s) on this host)",target->ident,target->host->name->content,target->host->clonecount);
 188   if (IsSetHost(target)) {
 189     if (target->shident) {
 190       controlreply((nick *)sender,"Fakehost  : %s@%s",target->shident->content, target->sethost->content);
 191     } else {
 192       controlreply((nick *)sender,"Fakehost  : %s",target->sethost->content);
 193     }
 194   }
 195   controlreply((nick *)sender,"Timestamp : %lu",target->timestamp);
 196   controlreply((nick *)sender,"IP address: %s",IPtostr(target->p_ipaddr));
 197   controlreply((nick *)sender,"Realname  : %s (%d user(s) have this realname)",target->realname->name->content,target->realname->usercount);
 198   if (target->umodes) {
 199     controlreply((nick *)sender,"Umode(s)  : %s",printflags(target->umodes,umodeflags));
 200   }
 201   if (IsAccount(target)) {
 202     controlreply((nick *)sender,"Account   : %s",target->authname);
 203     if (target->accountts)
 204       controlreply((nick *)sender,"AccountTS : %ld",target->accountts);
 205     if (target->auth)
 206       controlreply((nick *)sender,"UserID    : %ld",target->auth->userid);
 207     if (target->accountflags)
 208       controlreply((nick *)sender,"AccFlags  : %s",printflags(target->accountflags,accountflags));
 209   }
 210
 211   hooknick=(nick *)sender;
 212   registerhook(HOOK_CONTROL_WHOISREPLY,&handlewhois);
 213   triggerhook(HOOK_CONTROL_WHOISREQUEST,target);
 214   deregisterhook(HOOK_CONTROL_WHOISREPLY,&handlewhois);
 215
 216   if (target->channels->cursi==0) {
 217     controlreply((nick *)sender,"Channels  : none");
 218   } else if (target->channels->cursi>50) {
 219     controlreply((nick *)sender,"Channels  : - (total: %d)",target->channels->cursi);
 220   } else {
 221     buf[0]='\0';
 222     channels=(channel **)target->channels->content;
 223     for (i=0;i<=target->channels->cursi;i++) {
 224       if (!((i==target->channels->cursi) || ((70-strlen(buf))<channels[i]->index->name->length && strlen(buf)>0))) {
 225         strcat(buf,channels[i]->index->name->content);
 226         strcat(buf," ");
 227       } else {
 228         if (strlen(buf)==0) {
 229           break;
 230         } else {
 231           controlreply((nick *)sender,"Channels  : %s",buf);
 232           buf[0]='\0';
 233           i--;
 234         }
 235       }
 236     }
 237   }
 238
 239   return CMD_OK;
 240 }
 241
 242 int controlinsmod(void *sender, int cargc, char **cargv) {
 243   if (cargc<1)
 244     return CMD_USAGE;
 245
 246   switch(insmod(cargv[0])) {
 247     case -1:
 248       controlreply((nick *)sender,"Unable to load module %s",cargv[0]);
 249       return CMD_ERROR;
 250
 251     case 1:
 252       controlreply((nick *)sender,"Module %s already loaded, or name not valid",cargv[0]);
 253       return CMD_ERROR;
 254
 255     case 0:
 256       controlreply((nick *)sender,"Module %s loaded.",cargv[0]);
 257       return CMD_OK;
 258
 259     default:
 260       controlreply((nick *)sender,"An unknown error occured.");
 261       return CMD_ERROR;
 262   }
 263 }
 264
 265 int controlrmmod(void *sender, int cargc, char **cargv) {
 266   if (cargc<1)
 267     return CMD_USAGE;
 268
 269   switch(rmmod(cargv[0])) {
 270     case 1:
 271       controlreply((nick *)sender,"Module %s is not loaded.",cargv[0]);
 272       return CMD_ERROR;
 273
 274     case 0:
 275       controlreply((nick *)sender,"Module %s unloaded.",cargv[0]);
 276       return CMD_OK;
 277
 278     default:
 279       controlreply((nick *)sender,"An unknown error occured.");
 280       return CMD_ERROR;
 281   }
 282 }
 283
 284 int controllsmod(void *sender, int cargc, char **cargv) {
 285   int i=0;
 286   char *ptr;
 287
 288   if (cargc < 1) { /* list all loaded modules */
 289     ptr = lsmod(i);
 290     controlreply((nick *)sender,"Module");
 291     while (ptr != NULL) {
 292       const char *ver = lsmodver(i);
 293       controlreply((nick *)sender,"%s%s%s%s", ptr, ver?" (":"", ver?ver:"", ver?")":"");
 294       ptr = lsmod(++i);
 295     }
 296   } else {
 297     ptr = lsmod(getindex(cargv[0]));
 298     controlreply((nick *)sender,"Module \"%s\" %s", cargv[0], (ptr ? "is loaded." : "is NOT loaded."));
 299   }
 300   return CMD_OK;
 301 }
 302
 303 int controlreload(void *sender, int cargc, char **cargv) {
 304   if (cargc<1)
 305     return CMD_USAGE;
 306
 307   controlreply((nick *)sender,"Imma gonna try and reload %s",cargv[0]);
 308
 309   safereload(cargv[0]);
 310
 311   return CMD_OK;
 312 }
 313
 314 int relink(void *sender, int cargc, char **cargv) {
 315   if (cargc<1) {
 316     controlreply((nick *)sender,"You must give a reason.");
 317     return CMD_USAGE;
 318   }
 319
 320   irc_send("%s SQ %s 0 :%s",mynumeric->content,myserver->content,cargv[0]);
 321   irc_disconnected();
 322
 323   return CMD_OK;
 324 }
 325
 326 int die(void *sender, int cargc, char **cargv) {
 327   if (cargc<1) {
 328     controlreply((nick *)sender,"You must give a reason.");
 329     return CMD_USAGE;
 330   }
 331
 332   controlwall(NO_OPER,NL_OPERATIONS,"DIE from %s: %s",((nick *)sender)->nick, cargv[0]);
 333
 334   newserv_shutdown_pending=1;
 335
 336   return CMD_OK;
 337 }
 338
 339 int controlchannel(void *sender, int cargc, char **cargv) {
 340   channel *cp;
 341   nick *np;
 342   chanban *cbp;
 343   char buf[BUFSIZE];
 344   char buf2[12];
 345   int i,j;
 346   char timebuf[30];
 347
 348   if (cargc<1)
 349     return CMD_USAGE;
 350
 351   if ((cp=findchannel(cargv[0]))==NULL) {
 352     controlreply((nick *)sender,"Couldn't find channel: %s",cargv[0]);
 353     return CMD_ERROR;
 354   }
 355
 356   if (IsLimit(cp)) {
 357     sprintf(buf2,"%d",cp->limit);
 358   }
 359
 360   controlreply((nick *)sender,"Channel : %s",cp->index->name->content);
 361   strftime(timebuf, 30, "%d/%m/%y %H:%M", localtime(&(cp->timestamp)));
 362   controlreply((nick *)sender,"C-time  : %ld [%s]",cp->timestamp,timebuf);
 363   if (cp->topic) {
 364     controlreply((nick *)sender,"Topic   : %s",cp->topic->content);
 365     strftime(timebuf, 30, "%d/%m/%y %H:%M", localtime(&(cp->topictime)));
 366     controlreply((nick *)sender,"T-time  : %ld [%s]",cp->topictime,timebuf);
 367   }
 368   controlreply((nick *)sender,"Mode(s) : %s %s%s%s",printflags(cp->flags,cmodeflags),IsLimit(cp)?buf2:"",
 369     IsLimit(cp)?" ":"",IsKey(cp)?cp->key->content:"");
 370   controlreply((nick *)sender,"Users   : %d (hash size %d, utilisation %.1f%%); %d unique hosts",
 371     cp->users->totalusers,cp->users->hashsize,((float)(100*cp->users->totalusers)/cp->users->hashsize),
 372     countuniquehosts(cp));
 373   i=0;
 374   memset(buf,' ',90);
 375   buf[72]='\0';
 376   for (j=0;j<=cp->users->hashsize;j++) {
 377     if (i==4 || j==cp->users->hashsize) {
 378       if(i>0) {
 379         controlreply((nick *)sender,"Users   : %s",buf);
 380       }
 381       i=0;
 382       memset(buf,' ',72);
 383       if (j==cp->users->hashsize)
 384         break;
 385     }
 386     if (cp->users->content[j]!=nouser) {
 387       np=getnickbynumeric(cp->users->content[j]);
 388       sprintf(&buf[i*18],"%c%c%-15s ",cp->users->content[j]&CUMODE_VOICE?'+':' ',
 389         cp->users->content[j]&CUMODE_OP?'@':' ', np?np->nick:"!BUG-NONICK!");
 390       i++;
 391       if (i<4)
 392         buf[i*18]=' ';
 393     }
 394   }
 395
 396   for (cbp=cp->bans;cbp;cbp=cbp->next) {
 397     controlreply((nick *)sender,"Ban     : %s",bantostringdebug(cbp));
 398   }
 399   return CMD_OK;
 400 }
 401
 402 int controlshowcommands(void *sender, int cargc, char **cargv) {
 403   nick *np=(nick *)sender;
 404   Command *cmdlist[100];
 405   int i,n;
 406
 407   n=getcommandlist(controlcmds,cmdlist,100);
 408
 409   controlreply(np,"The following commands are registered at present:");
 410
 411   for(i=0;i<n;i++) {
 412     controlreply(np,"%s",cmdlist[i]->command->content);
 413   }
 414
 415   controlreply(np,"End of list.");
 416   return CMD_OK;
 417 }
 418
 419 void handlemessages(nick *target, int messagetype, void **args) {
 420   Command *cmd;
 421   char *cargv[50];
 422   int cargc;
 423   nick *sender;
 424
 425   switch(messagetype) {
 426     case LU_PRIVMSG:
 427     case LU_SECUREMSG:
 428       /* If it's a message, first arg is nick and second is message */
 429       sender=(nick *)args[0];
 430
 431       Error("control",ERR_INFO,"From: %s!%s@%s: %s",sender->nick,sender->ident,sender->host->name->content, (char *)args[1]);
 432
 433       /* Split the line into params */
 434       cargc=splitline((char *)args[1],cargv,50,0);
 435
 436       if (!cargc) {
 437         /* Blank line */
 438         return;
 439       }
 440
 441       cmd=findcommandintree(controlcmds,cargv[0],1);
 442       if (cmd==NULL) {
 443         controlreply(sender,"Unknown command.");
 444         return;
 445       }
 446
 447       if (cmd->level>0 && !IsOper(sender)) {
 448         controlreply(sender,"You need to be opered to use this command.");
 449         return;
 450       }
 451
 452       /* If we were doing "authed user tracking" here we'd put a check in for authlevel */
 453
 454       /* Check the maxargs */
 455       if (cmd->maxparams<(cargc-1)) {
 456         /* We need to do some rejoining */
 457         rejoinline(cargv[cmd->maxparams],cargc-(cmd->maxparams));
 458         cargc=(cmd->maxparams)+1;
 459       }
 460
 461       if((cmd->handler)((void *)sender,cargc-1,&(cargv[1])) == CMD_USAGE)
 462         controlhelp(sender, cmd);
 463       break;
 464
 465     case LU_KILLED:
 466       /* someone killed me?  Bastards */
 467       scheduleoneshot(time(NULL)+1,&controlconnect,NULL);
 468       mynick=NULL;
 469       break;
 470
 471     default:
 472       break;
 473   }
 474 }
 475
 476 void controlmessage(nick *target, char *message, ... ) {
 477   char buf[512];
 478   va_list va;
 479
 480   if (mynick==NULL) {
 481     return;
 482   }
 483
 484   va_start(va,message);
 485   vsnprintf(buf,512,message,va);
 486   va_end(va);
 487
 488   sendmessagetouser(mynick,target,"%s",buf);
 489 }
 490
 491 void controlchanmsg(channel *cp, char *message, ...) {
 492   char buf[512];
 493   va_list va;
 494
 495   if (mynick==NULL) {
 496     return;
 497   }
 498
 499   va_start(va,message);
 500   vsnprintf(buf,512,message,va);
 501   va_end(va);
 502
 503   sendmessagetochannel(mynick,cp,"%s",buf);
 504 }
 505
 506 void controlnotice(nick *target, char *message, ... ) {
 507   char buf[512];
 508   va_list va;
 509
 510   if (mynick==NULL) {
 511     return;
 512   }
 513
 514   va_start(va,message);
 515   vsnprintf(buf,512,message,va);
 516   va_end(va);
 517
 518   sendnoticetouser(mynick,target,"%s",buf);
 519 }
 520
 521 void controlspecialrmmod(void *arg) {
 522   struct specialsched *a = (struct specialsched *)arg;
 523
 524   a->schedule = NULL;
 525   sstring *froo = a->modulename;
 526
 527   rmmod(froo->content);
 528   freesstring(froo);
 529 }
 530
 531 void controlspecialreloadmod(void *arg) {
 532   struct specialsched *a = (struct specialsched *)arg;
 533
 534   a->schedule = NULL;
 535   sstring *froo = a->modulename;
 536
 537   safereload(froo->content);
 538   freesstring(froo);
 539 }
 540
 541 void controlhelp(nick *np, Command *cmd) {
 542   char *cp = cmd->help, *sp = cp;
 543   if(!cp || !*cp) {
 544     controlreply(np, "Sorry, no help for this command.");
 545   } else {
 546     int finished = 0;
 547     for(;;cp++) {
 548       if(*cp == '\0' || *cp == '\n') {
 549         if(*cp == '\0') {
 550           finished = 1;
 551         } else {
 552           *cp = '\0';
 553         }
 554
 555         if(sp != cp)
 556           controlreply(np, "%s", sp);
 557
 558         if(finished)
 559           break;
 560
 561         *cp = '\n';
 562
 563         sp = cp + 1;
 564       }
 565     }
 566   }
 567 }
 568
 569 int controlhelpcmd(void *sender, int cargc, char **cargv) {
 570   Command *cmd;
 571   nick *np = (nick *)sender;
 572
 573   if (cargc<1)
 574     return CMD_USAGE;
 575
 576   cmd=findcommandintree(controlcmds,cargv[0],1);
 577   if (cmd==NULL) {
 578     controlreply(np,"Unknown command.");
 579     return CMD_ERROR;
 580   }
 581
 582   controlhelp(np, cmd);
 583   return CMD_OK;
 584 }
 585
 586 void controlnoticeopers(flag_t permissionlevel, flag_t noticelevel, char *format, ...) {
 587   int i;
 588   nick *np;
 589   char broadcast[512];
 590   va_list va;
 591
 592   va_start(va, format);
 593   vsnprintf(broadcast, sizeof(broadcast), format, va);
 594   va_end(va);
 595
 596   for(i=0;i<NICKHASHSIZE;i++)
 597     for(np=nicktable[i];np;np=np->next)
 598       if (IsOper(np))
 599         controlnotice(np, "%s", broadcast);
 600 }
 601
 602 void controlnswall(int noticelevel, char *format, ...) {
 603   char broadcast[512];
 604   va_list va;
 605
 606   va_start(va, format);
 607   vsnprintf(broadcast, sizeof(broadcast), format, va);
 608   va_end(va);
 609
 610   controlwall(NO_OPER, noticelevel, "%s", broadcast);
 611 }
 612