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,&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
 138   hooknick=(nick *)sender;
 139
 140   if (cargc>0) {
 141     level=strtoul(cargv[0],NULL,10);
 142   }
 143
 144   registerhook(HOOK_CORE_STATSREPLY,&handlestats);
 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   }
 206
 207   hooknick=(nick *)sender;
 208   registerhook(HOOK_CONTROL_WHOISREPLY,&handlewhois);
 209   triggerhook(HOOK_CONTROL_WHOISREQUEST,target);
 210   deregisterhook(HOOK_CONTROL_WHOISREPLY,&handlewhois);
 211
 212   if (target->channels->cursi==0) {
 213     controlreply((nick *)sender,"Channels  : none");
 214   } else if (target->channels->cursi>50) {
 215     controlreply((nick *)sender,"Channels  : - (total: %d)",target->channels->cursi);
 216   } else {
 217     buf[0]='\0';
 218     channels=(channel **)target->channels->content;
 219     for (i=0;i<=target->channels->cursi;i++) {
 220       if (!((i==target->channels->cursi) || ((70-strlen(buf))<channels[i]->index->name->length && strlen(buf)>0))) {
 221         strcat(buf,channels[i]->index->name->content);
 222         strcat(buf," ");
 223       } else {
 224         if (strlen(buf)==0) {
 225           break;
 226         } else {
 227           controlreply((nick *)sender,"Channels  : %s",buf);
 228           buf[0]='\0';
 229           i--;
 230         }
 231       }
 232     }
 233   }
 234
 235   return CMD_OK;
 236 }
 237
 238 int controlinsmod(void *sender, int cargc, char **cargv) {
 239   if (cargc<1)
 240     return CMD_USAGE;
 241
 242   switch(insmod(cargv[0])) {
 243     case -1:
 244       controlreply((nick *)sender,"Unable to load module %s",cargv[0]);
 245       return CMD_ERROR;
 246
 247     case 1:
 248       controlreply((nick *)sender,"Module %s already loaded, or name not valid",cargv[0]);
 249       return CMD_ERROR;
 250
 251     case 0:
 252       controlreply((nick *)sender,"Module %s loaded.",cargv[0]);
 253       return CMD_OK;
 254
 255     default:
 256       controlreply((nick *)sender,"An unknown error occured.");
 257       return CMD_ERROR;
 258   }
 259 }
 260
 261 int controlrmmod(void *sender, int cargc, char **cargv) {
 262   if (cargc<1)
 263     return CMD_USAGE;
 264
 265   switch(rmmod(cargv[0])) {
 266     case 1:
 267       controlreply((nick *)sender,"Module %s is not loaded.",cargv[0]);
 268       return CMD_ERROR;
 269
 270     case 0:
 271       controlreply((nick *)sender,"Module %s unloaded.",cargv[0]);
 272       return CMD_OK;
 273
 274     default:
 275       controlreply((nick *)sender,"An unknown error occured.");
 276       return CMD_ERROR;
 277   }
 278 }
 279
 280 int controllsmod(void *sender, int cargc, char **cargv) {
 281   int i=0;
 282   char *ptr;
 283
 284   if (cargc < 1) { /* list all loaded modules */
 285     ptr = lsmod(i);
 286     controlreply((nick *)sender,"Module");
 287     while (ptr != NULL) {
 288       const char *ver = lsmodver(i);
 289       controlreply((nick *)sender,"%s%s%s%s", ptr, ver?" (":"", ver?ver:"", ver?")":"");
 290       ptr = lsmod(++i);
 291     }
 292   } else {
 293     ptr = lsmod(getindex(cargv[0]));
 294     controlreply((nick *)sender,"Module \"%s\" %s", cargv[0], (ptr ? "is loaded." : "is NOT loaded."));
 295   }
 296   return CMD_OK;
 297 }
 298
 299 int controlreload(void *sender, int cargc, char **cargv) {
 300   if (cargc<1)
 301     return CMD_USAGE;
 302
 303   controlreply((nick *)sender,"Imma gonna try and reload %s",cargv[0]);
 304
 305   safereload(cargv[0]);
 306
 307   return CMD_OK;
 308 }
 309
 310 int relink(void *sender, int cargc, char **cargv) {
 311   if (cargc<1) {
 312     controlreply((nick *)sender,"You must give a reason.");
 313     return CMD_USAGE;
 314   }
 315
 316   irc_send("%s SQ %s 0 :%s",mynumeric->content,myserver->content,cargv[0]);
 317   irc_disconnected();
 318
 319   return CMD_OK;
 320 }
 321
 322 int die(void *sender, int cargc, char **cargv) {
 323   if (cargc<1) {
 324     controlreply((nick *)sender,"You must give a reason.");
 325     return CMD_USAGE;
 326   }
 327
 328   controlwall(0,0,"DIE from %s: %s",((nick *)sender)->nick, cargv[0]);
 329
 330   newserv_shutdown_pending=1;
 331
 332   return CMD_OK;
 333 }
 334
 335 int controlchannel(void *sender, int cargc, char **cargv) {
 336   channel *cp;
 337   nick *np;
 338   chanban *cbp;
 339   char buf[BUFSIZE];
 340   char buf2[12];
 341   int i,j;
 342
 343   if (cargc<1)
 344     return CMD_USAGE;
 345
 346   if ((cp=findchannel(cargv[0]))==NULL) {
 347     controlreply((nick *)sender,"Couldn't find channel: %s",cargv[0]);
 348     return CMD_ERROR;
 349   }
 350
 351   if (IsLimit(cp)) {
 352     sprintf(buf2,"%d",cp->limit);
 353   }
 354
 355   controlreply((nick *)sender,"Channel : %s",cp->index->name->content);
 356   if (cp->topic) {
 357     controlreply((nick *)sender,"Topic   : %s",cp->topic->content);
 358     controlreply((nick *)sender,"T-time  : %ld [%s]",cp->topictime,ctime(&(cp->topictime)));
 359   }
 360   controlreply((nick *)sender,"Mode(s) : %s %s%s%s",printflags(cp->flags,cmodeflags),IsLimit(cp)?buf2:"",
 361     IsLimit(cp)?" ":"",IsKey(cp)?cp->key->content:"");
 362   controlreply((nick *)sender,"Users   : %d (hash size %d, utilisation %.1f%%); %d unique hosts",
 363     cp->users->totalusers,cp->users->hashsize,((float)(100*cp->users->totalusers)/cp->users->hashsize),
 364     countuniquehosts(cp));
 365   i=0;
 366   memset(buf,' ',90);
 367   buf[72]='\0';
 368   for (j=0;j<=cp->users->hashsize;j++) {
 369     if (i==4 || j==cp->users->hashsize) {
 370       if(i>0) {
 371         controlreply((nick *)sender,"Users   : %s",buf);
 372       }
 373       i=0;
 374       memset(buf,' ',72);
 375       if (j==cp->users->hashsize)
 376         break;
 377     }
 378     if (cp->users->content[j]!=nouser) {
 379       np=getnickbynumeric(cp->users->content[j]);
 380       sprintf(&buf[i*18],"%c%c%-15s ",cp->users->content[j]&CUMODE_VOICE?'+':' ',
 381         cp->users->content[j]&CUMODE_OP?'@':' ', np?np->nick:"!BUG-NONICK!");
 382       i++;
 383       if (i<4)
 384         buf[i*18]=' ';
 385     }
 386   }
 387
 388   for (cbp=cp->bans;cbp;cbp=cbp->next) {
 389     controlreply((nick *)sender,"Ban     : %s",bantostringdebug(cbp));
 390   }
 391   return CMD_OK;
 392 }
 393
 394 int controlshowcommands(void *sender, int cargc, char **cargv) {
 395   nick *np=(nick *)sender;
 396   Command *cmdlist[100];
 397   int i,n;
 398
 399   n=getcommandlist(controlcmds,cmdlist,100);
 400
 401   controlreply(np,"The following commands are registered at present:");
 402
 403   for(i=0;i<n;i++) {
 404     controlreply(np,"%s",cmdlist[i]->command->content);
 405   }
 406
 407   controlreply(np,"End of list.");
 408   return CMD_OK;
 409 }
 410
 411 void handlemessages(nick *target, int messagetype, void **args) {
 412   Command *cmd;
 413   char *cargv[50];
 414   int cargc;
 415   nick *sender;
 416
 417   switch(messagetype) {
 418     case LU_PRIVMSG:
 419     case LU_SECUREMSG:
 420       /* If it's a message, first arg is nick and second is message */
 421       sender=(nick *)args[0];
 422
 423       Error("control",ERR_INFO,"From: %s!%s@%s: %s",sender->nick,sender->ident,sender->host->name->content, (char *)args[1]);
 424
 425       /* Split the line into params */
 426       cargc=splitline((char *)args[1],cargv,50,0);
 427
 428       if (!cargc) {
 429         /* Blank line */
 430         return;
 431       }
 432
 433       cmd=findcommandintree(controlcmds,cargv[0],1);
 434       if (cmd==NULL) {
 435         controlreply(sender,"Unknown command.");
 436         return;
 437       }
 438
 439       if (cmd->level>0 && !IsOper(sender)) {
 440         controlreply(sender,"You need to be opered to use this command.");
 441         return;
 442       }
 443
 444       /* If we were doing "authed user tracking" here we'd put a check in for authlevel */
 445
 446       /* Check the maxargs */
 447       if (cmd->maxparams<(cargc-1)) {
 448         /* We need to do some rejoining */
 449         rejoinline(cargv[cmd->maxparams],cargc-(cmd->maxparams));
 450         cargc=(cmd->maxparams)+1;
 451       }
 452
 453       if((cmd->handler)((void *)sender,cargc-1,&(cargv[1])) == CMD_USAGE)
 454         controlhelp(sender, cmd);
 455       break;
 456
 457     case LU_KILLED:
 458       /* someone killed me?  Bastards */
 459       scheduleoneshot(time(NULL)+1,&controlconnect,NULL);
 460       mynick=NULL;
 461       break;
 462
 463     default:
 464       break;
 465   }
 466 }
 467
 468 void controlmessage(nick *target, char *message, ... ) {
 469   char buf[512];
 470   va_list va;
 471
 472   if (mynick==NULL) {
 473     return;
 474   }
 475
 476   va_start(va,message);
 477   vsnprintf(buf,512,message,va);
 478   va_end(va);
 479
 480   sendmessagetouser(mynick,target,"%s",buf);
 481 }
 482
 483 void controlchanmsg(channel *cp, char *message, ...) {
 484   char buf[512];
 485   va_list va;
 486
 487   if (mynick==NULL) {
 488     return;
 489   }
 490
 491   va_start(va,message);
 492   vsnprintf(buf,512,message,va);
 493   va_end(va);
 494
 495   sendmessagetochannel(mynick,cp,"%s",buf);
 496 }
 497
 498 void controlnotice(nick *target, char *message, ... ) {
 499   char buf[512];
 500   va_list va;
 501
 502   if (mynick==NULL) {
 503     return;
 504   }
 505
 506   va_start(va,message);
 507   vsnprintf(buf,512,message,va);
 508   va_end(va);
 509
 510   sendnoticetouser(mynick,target,"%s",buf);
 511 }
 512
 513 void controlspecialrmmod(void *arg) {
 514   struct specialsched *a = (struct specialsched *)arg;
 515
 516   a->schedule = NULL;
 517   sstring *froo = a->modulename;
 518
 519   rmmod(froo->content);
 520   freesstring(froo);
 521 }
 522
 523 void controlspecialreloadmod(void *arg) {
 524   struct specialsched *a = (struct specialsched *)arg;
 525
 526   a->schedule = NULL;
 527   sstring *froo = a->modulename;
 528
 529   safereload(froo->content);
 530   freesstring(froo);
 531 }
 532
 533 void controlhelp(nick *np, Command *cmd) {
 534   char *cp = cmd->help, *sp = cp;
 535   if(!cp || !*cp) {
 536     controlreply(np, "Sorry, no help for this command.");
 537   } else {
 538     int finished = 0;
 539     for(;;cp++) {
 540       if(*cp == '\0' || *cp == '\n') {
 541         if(*cp == '\0') {
 542           finished = 1;
 543         } else {
 544           *cp = '\0';
 545         }
 546
 547         if(sp != cp)
 548           controlreply(np, "%s", sp);
 549
 550         if(finished)
 551           break;
 552
 553         *cp = '\n';
 554
 555         sp = cp + 1;
 556       }
 557     }
 558   }
 559 }
 560
 561 int controlhelpcmd(void *sender, int cargc, char **cargv) {
 562   Command *cmd;
 563   nick *np = (nick *)sender;
 564
 565   if (cargc<1)
 566     return CMD_USAGE;
 567
 568   cmd=findcommandintree(controlcmds,cargv[0],1);
 569   if (cmd==NULL) {
 570     controlreply(np,"Unknown command.");
 571     return CMD_ERROR;
 572   }
 573
 574   controlhelp(np, cmd);
 575   return CMD_OK;
 576 }
 577
 578 void controlnoticeopers(flag_t permissionlevel, flag_t noticelevel, char *format, ...) {
 579   int i;
 580   nick *np;
 581   char broadcast[512];
 582   va_list va;
 583
 584   va_start(va, format);
 585   vsnprintf(broadcast, sizeof(broadcast), format, va);
 586   va_end(va);
 587
 588   for(i=0;i<NICKHASHSIZE;i++)
 589     for(np=nicktable[i];np;np=np->next)
 590       if (IsOper(np))
 591         controlnotice(np, "%s", broadcast);
 592 }