src/cmd_who.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *          the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "configreader.h"
  15 #include "users.h"
  16 #include "modules.h"
  17 #include "wildcard.h"
  18 #include "commands/cmd_who.h"
  19
  20 /* get the last 'visible' chan of a user */
  21 static char *getlastchanname(userrec *u)
  22 {
  23         UCListIter i = u->chans.begin();
  24         if (i != u->chans.end())
  25         {
  26                 if (!i->first->IsModeSet('s'))
  27                         return i->first->name;
  28         }
  29
  30         return "*";
  31 }
  32
  33 bool cmd_who::whomatch(userrec* user, const char* matchtext)
  34 {
  35         bool realhost = false;
  36         bool realname = false;
  37         bool positive = true;
  38         bool metadata = false;
  39         bool ident = false;
  40         bool away = false;
  41         bool port = false;
  42         char* dummy = NULL;
  43
  44         if (user->registered != REG_ALL)
  45                 return false;
  46
  47         if (opt_local && !IS_LOCAL(user))
  48                 return false;
  49         else if (opt_far && IS_LOCAL(user))
  50                 return false;
  51
  52         if (opt_mode)
  53         {
  54                 for (const char* n = matchtext; *n; n++)
  55                 {
  56                         if (*n == '+')
  57                         {
  58                                 positive = true;
  59                                 continue;
  60                         }
  61                         else if (*n == '-')
  62                         {
  63                                 positive = false;
  64                                 continue;
  65                         }
  66                         if (user->IsModeSet(*n) != positive)
  67                                 return false;
  68                 }
  69                 return true;
  70         }
  71         else
  72         {
  73
  74                 if (opt_metadata)
  75                         metadata = user->GetExt(matchtext, dummy);
  76                 else
  77                 {
  78                         if (opt_realname)
  79                                 realname = match(user->fullname, matchtext);
  80                         else
  81                         {
  82                                 if (opt_showrealhost)
  83                                         realhost = match(user->host, matchtext);
  84                                 else
  85                                 {
  86                                         if (opt_ident)
  87                                                 ident = match(user->ident, matchtext);
  88                                         else
  89                                         {
  90                                                 if (opt_port)
  91                                                 {
  92                                                         irc::portparser portrange(matchtext, false);
  93                                                         long portno = -1;
  94                                                         while ((portno = portrange.GetToken()))
  95                                                                 if (portno == user->GetPort())
  96                                                                         port = true;
  97                                                 }
  98                                                 else
  99                                                 {
 100                                                         if (opt_away)
 101                                                                 away = match(user->awaymsg, matchtext);
 102                                                 }
 103                                         }
 104                                 }
 105                         }
 106                 }
 107                 return ((port) || (away) || (ident) || (metadata) || (realname) || (realhost) || (match(user->dhost, matchtext)) || (match(user->nick, matchtext)) || (match(user->server, matchtext)));
 108         }
 109 }
 110
 111
 112
 113 extern "C" DllExport command_t* init_command(InspIRCd* Instance)
 114 {
 115         return new cmd_who(Instance);
 116 }
 117
 118 bool cmd_who::CanView(chanrec* chan, userrec* user)
 119 {
 120         if (!user || !chan)
 121                 return false;
 122
 123         /* Execute items in fastest-to-execute first order */
 124
 125         /* Opers see all */
 126         if (IS_OPER(user))
 127                 return true;
 128         else if (!chan->IsModeSet('s') && !chan->IsModeSet('p'))
 129                 return true;
 130         else if (chan->HasUser(user))
 131                 return true;
 132
 133         return false;
 134 }
 135
 136 void cmd_who::SendWhoLine(userrec* user, const std::string &initial, chanrec* ch, userrec* u, std::vector<std::string> &whoresults)
 137 {
 138         std::string lcn = getlastchanname(u);
 139         chanrec* chlast = ServerInstance->FindChan(lcn);
 140
 141         /* Not visible to this user */
 142         if (u->Visibility && !u->Visibility->VisibleTo(user))
 143                 return;
 144
 145         std::string wholine =   initial + (ch ? ch->name : lcn) + " " + u->ident + " " + (opt_showrealhost ? u->host : u->dhost) + " " +
 146                                 ((*ServerInstance->Config->HideWhoisServer && !IS_OPER(user)) ? ServerInstance->Config->HideWhoisServer : u->server) +
 147                                 " " + u->nick + " ";
 148
 149         /* away? */
 150         if (IS_AWAY(u))
 151         {
 152                 wholine.append("G");
 153         }
 154         else
 155         {
 156                 wholine.append("H");
 157         }
 158
 159         /* oper? */
 160         if (IS_OPER(u))
 161         {
 162                 wholine.append("*");
 163         }
 164
 165         wholine = wholine + (ch ? ch->GetPrefixChar(u) : (chlast ? chlast->GetPrefixChar(u) : "")) + " :0 " + u->fullname;
 166         whoresults.push_back(wholine);
 167 }
 168
 169 CmdResult cmd_who::Handle (const char** parameters, int pcnt, userrec *user)
 170 {
 171         /*
 172          * XXX - RFC says:
 173          *   The <name> passed to WHO is matched against users' host, server, real
 174          *   name and nickname
 175          * Currently, we support WHO #chan, WHO nick, WHO 0, WHO *, and the addition of a 'o' flag, as per RFC.
 176          */
 177
 178         /* WHO options */
 179         opt_viewopersonly = false;
 180         opt_showrealhost = false;
 181         opt_unlimit = false;
 182         opt_realname = false;
 183         opt_mode = false;
 184         opt_ident = false;
 185         opt_metadata = false;
 186         opt_port = false;
 187         opt_away = false;
 188         opt_local = false;
 189         opt_far = false;
 190
 191         chanrec *ch = NULL;
 192         std::vector<std::string> whoresults;
 193         std::string initial = "352 " + std::string(user->nick) + " ";
 194
 195         const char* matchtext = NULL;
 196
 197         /* Change '0' into '*' so the wildcard matcher can grok it */
 198         matchtext = parameters[0];
 199         if (!strcmp(matchtext,"0"))
 200                 matchtext = "*";
 201
 202         if (pcnt > 1)
 203         {
 204                 /* parse flags */
 205                 const char *iter = parameters[1];
 206
 207                 while (*iter)
 208                 {
 209                         switch (*iter)
 210                         {
 211                                 case 'o':
 212                                         opt_viewopersonly = true;
 213                                 break;
 214                                 case 'h':
 215                                         if (IS_OPER(user))
 216                                                 opt_showrealhost = true;
 217                                 break;
 218                                 case 'u':
 219                                         if (IS_OPER(user))
 220                                                 opt_unlimit = true;
 221                                 break;
 222                                 case 'r':
 223                                         opt_realname = true;
 224                                 break;
 225                                 case 'm':
 226                                         opt_mode = true;
 227                                 break;
 228                                 case 'M':
 229                                         opt_metadata = true;
 230                                 break;
 231                                 case 'i':
 232                                         opt_ident = true;
 233                                 break;
 234                                 case 'p':
 235                                         opt_port = true;
 236                                 break;
 237                                 case 'a':
 238                                         opt_away = true;
 239                                 break;
 240                                 case 'l':
 241                                         opt_local = true;
 242                                 break;
 243                                 case 'f':
 244                                         opt_far = true;
 245                                 break;
 246                         }
 247
 248                         *iter++;
 249                 }
 250         }
 251
 252
 253         /* who on a channel? */
 254         ch = ServerInstance->FindChan(matchtext);
 255
 256         if (ch)
 257         {
 258                 if (CanView(ch,user))
 259                 {
 260                         bool inside = ch->HasUser(user);
 261
 262                         /* who on a channel. */
 263                         CUList *cu = ch->GetUsers();
 264
 265                         for (CUList::iterator i = cu->begin(); i != cu->end(); i++)
 266                         {
 267                                 /* opers only, please */
 268                                 if (opt_viewopersonly && !IS_OPER(i->first))
 269                                         continue;
 270
 271                                 /* If we're not inside the channel, hide +i users */
 272                                 if (i->first->IsModeSet('i') && !inside)
 273                                         continue;
 274
 275                                 SendWhoLine(user, initial, ch, i->first, whoresults);
 276                         }
 277                 }
 278         }
 279         else
 280         {
 281                 /* Match against wildcard of nick, server or host */
 282
 283                 if (opt_viewopersonly)
 284                 {
 285                         /* Showing only opers */
 286                         for (std::vector<userrec*>::iterator i = ServerInstance->all_opers.begin(); i != ServerInstance->all_opers.end(); i++)
 287                         {
 288                                 userrec* oper = *i;
 289
 290                                 if (whomatch(oper, matchtext))
 291                                 {
 292                                         if ((!oper->IsModeSet('i')) && (!IS_OPER(user)))
 293                                                 continue;
 294
 295                                         SendWhoLine(user, initial, NULL, oper, whoresults);
 296                                 }
 297                         }
 298                 }
 299                 else
 300                 {
 301                         for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); i++)
 302                         {
 303                                 if (whomatch(i->second, matchtext))
 304                                 {
 305                                         if ((i->second->IsModeSet('i')) && (!IS_OPER(user)))
 306                                                 continue;
 307
 308                                         SendWhoLine(user, initial, NULL, i->second, whoresults);
 309                                 }
 310                         }
 311                 }
 312         }
 313         /* Send the results out */
 314         if ((whoresults.size() <= (size_t)ServerInstance->Config->MaxWhoResults) || opt_unlimit)
 315         {
 316                 for (std::vector<std::string>::const_iterator n = whoresults.begin(); n != whoresults.end(); n++)
 317                         user->WriteServ(*n);
 318                 user->WriteServ("315 %s %s :End of /WHO list.",user->nick, *parameters[0] ? parameters[0] : "*");
 319                 return CMD_SUCCESS;
 320         }
 321         else
 322         {
 323                 /* BZZT! Too many results. */
 324                 user->WriteServ("315 %s %s :Too many results",user->nick, parameters[0]);
 325                 return CMD_FAILURE;
 326         }
 327 }