src/commands.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "inspircd.h"
  21 #include "inspircd_io.h"
  22 #include <unistd.h>
  23 #include <sys/errno.h>
  24 #include <sys/ioctl.h>
  25 #include <sys/utsname.h>
  26 #include <cstdio>
  27 #include <time.h>
  28 #include <string>
  29 #ifdef GCC3
  30 #include <ext/hash_map>
  31 #else
  32 #include <hash_map>
  33 #endif
  34 #include <map>
  35 #include <sstream>
  36 #include <vector>
  37 #include <deque>
  38 #include <sys/types.h>
  39 #include <sys/time.h>
  40 #include <sys/resource.h>
  41 #ifdef THREADED_DNS
  42 #include <pthread.h>
  43 #endif
  44 #ifndef RUSAGE_SELF
  45 #define   RUSAGE_SELF     0
  46 #define   RUSAGE_CHILDREN     -1
  47 #endif
  48 #include "users.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "commands.h"
  56 #include "mode.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60 #include "helperfuncs.h"
  61 #include "hashcomp.h"
  62 #include "socketengine.h"
  63 #include "typedefs.h"
  64 #include "command_parse.h"
  65
  66 extern ServerConfig* Config;
  67 extern InspIRCd* ServerInstance;
  68
  69 extern int MODCOUNT;
  70 extern std::vector<Module*> modules;
  71 extern std::vector<ircd_module*> factory;
  72 extern time_t TIME;
  73
  74 const long duration_m = 60;
  75 const long duration_h = duration_m * 60;
  76 const long duration_d = duration_h * 24;
  77 const long duration_w = duration_d * 7;
  78 const long duration_y = duration_w * 52;
  79
  80 extern user_hash clientlist;
  81 extern chan_hash chanlist;
  82 extern whowas_hash whowas;
  83
  84 extern std::vector<userrec*> all_opers;
  85 extern std::vector<userrec*> local_users;
  86
  87 // This table references users by file descriptor.
  88 // its an array to make it VERY fast, as all lookups are referenced
  89 // by an integer, meaning there is no need for a scan/search operation.
  90 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  91
  92
  93 void split_chlist(userrec* user, userrec* dest, std::string &cl)
  94 {
  95         std::stringstream channels(cl);
  96         std::string line = "";
  97         std::string cname = "";
  98         while (!channels.eof())
  99         {
 100                 channels >> cname;
 101                 line = line + cname + " ";
 102                 if (line.length() > 400)
 103                 {
 104                         WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, line.c_str());
 105                         line = "";
 106                 }
 107         }
 108         if (line.length())
 109         {
 110                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, line.c_str());
 111         }
 112 }
 113
 114 void do_whois(userrec* user, userrec* dest,unsigned long signon, unsigned long idle, char* nick)
 115 {
 116         // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
 117         if (dest->registered == 7)
 118         {
 119                 WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
 120                 if ((user == dest) || (strchr(user->modes,'o')))
 121                 {
 122                         WriteServ(user->fd,"378 %s %s :is connecting from *@%s %s",user->nick, dest->nick, dest->host, dest->ip);
 123                 }
 124                 std::string cl = chlist(dest,user);
 125                 if (cl.length())
 126                 {
 127                         if (cl.length() > 400)
 128                         {
 129                                 split_chlist(user,dest,cl);
 130                         }
 131                         else
 132                         {
 133                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, cl.c_str());
 134                         }
 135                 }
 136                 WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, GetServerDescription(dest->server).c_str());
 137                 if (*dest->awaymsg)
 138                 {
 139                         WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
 140                 }
 141                 if (strchr(dest->modes,'o'))
 142                 {
 143                         if (*dest->oper)
 144                         {
 145                                 WriteServ(user->fd,"313 %s %s :is %s %s on %s",user->nick, dest->nick, (strchr("aeiou",dest->oper[0]) ? "an" : "a"),dest->oper, Config->Network);
 146                         }
 147                         else
 148                         {
 149                                 WriteServ(user->fd,"313 %s %s :is opered but has an unknown type",user->nick, dest->nick);
 150                         }
 151                 }
 152                 if ((!signon) && (!idle))
 153                 {
 154                         FOREACH_MOD(I_OnWhois,OnWhois(user,dest));
 155                 }
 156                 if (!strcasecmp(user->server,dest->server))
 157                 {
 158                         // idle time and signon line can only be sent if youre on the same server (according to RFC)
 159                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-TIME), dest->signon);
 160                 }
 161                 else
 162                 {
 163                         if ((idle) || (signon))
 164                                 WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, idle, signon);
 165                 }
 166                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
 167         }
 168         else
 169         {
 170                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, nick);
 171                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, nick);
 172         }
 173 }
 174
 175 bool is_uline(const char* server)
 176 {
 177         char ServName[MAXBUF];
 178
 179         if (!server)
 180                 return false;
 181         if (!(*server))
 182                 return true;
 183
 184         for (int i = 0; i < Config->ConfValueEnum("uline",&Config->config_f); i++)
 185         {
 186                 Config->ConfValue("uline","server",i,ServName,&Config->config_f);
 187                 if (!strcasecmp(server,ServName))
 188                 {
 189                         return true;
 190                 }
 191         }
 192         return false;
 193 }
 194
 195 int operstrcmp(char* data,char* input)
 196 {
 197         int MOD_RESULT = 0;
 198         FOREACH_RESULT(I_OnOperCompare,OnOperCompare(data,input))
 199         log(DEBUG,"operstrcmp: %d",MOD_RESULT);
 200         if (MOD_RESULT == 1)
 201                 return 0;
 202         if (MOD_RESULT == -1)
 203                 return 1;
 204         log(DEBUG,"strcmp fallback: '%s' '%s' %d",data,input,strcmp(data,input));
 205         return strcmp(data,input);
 206 }
 207
 208 long duration(const char* str)
 209 {
 210         char n_field[MAXBUF];
 211         long total = 0;
 212         const char* str_end = str + strlen(str);
 213         n_field[0] = 0;
 214
 215         if ((!strchr(str,'s')) && (!strchr(str,'m')) && (!strchr(str,'h')) && (!strchr(str,'d')) && (!strchr(str,'w')) && (!strchr(str,'y')))
 216         {
 217                 std::string n = str;
 218                 n = n + "s";
 219                 return duration(n.c_str());
 220         }
 221
 222         for (char* i = (char*)str; i < str_end; i++)
 223         {
 224                 // if we have digits, build up a string for the value in n_field,
 225                 // up to 10 digits in size.
 226                 if ((*i >= '0') && (*i <= '9'))
 227                 {
 228                         strlcat(n_field,i,10);
 229                 }
 230                 else
 231                 {
 232                         // we dont have a digit, check for numeric tokens
 233                         switch (tolower(*i))
 234                         {
 235                                 case 's':
 236                                         total += atoi(n_field);
 237                                 break;
 238
 239                                 case 'm':
 240                                         total += (atoi(n_field)*duration_m);
 241                                 break;
 242
 243                                 case 'h':
 244                                         total += (atoi(n_field)*duration_h);
 245                                 break;
 246
 247                                 case 'd':
 248                                         total += (atoi(n_field)*duration_d);
 249                                 break;
 250
 251                                 case 'w':
 252                                         total += (atoi(n_field)*duration_w);
 253                                 break;
 254
 255                                 case 'y':
 256                                         total += (atoi(n_field)*duration_y);
 257                                 break;
 258                         }
 259                         n_field[0] = 0;
 260                 }
 261         }
 262         // add trailing seconds
 263         total += atoi(n_field);
 264
 265         return total;
 266 }
 267
 268 /* All other ircds when doing this check usually just look for a string of *@* or *. We're smarter than that, though. */
 269
 270 bool host_matches_everyone(std::string mask, userrec* user)
 271 {
 272         char insanemasks[MAXBUF];
 273         char buffer[MAXBUF];
 274         char itrigger[MAXBUF];
 275         Config->ConfValue("insane","hostmasks",0,insanemasks,&Config->config_f);
 276         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 277         if (*itrigger == 0)
 278                 strlcpy(itrigger,"95.5",MAXBUF);
 279         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 280                 return false;
 281         long matches = 0;
 282         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 283         {
 284                 strlcpy(buffer,u->second->ident,MAXBUF);
 285                 strlcat(buffer,"@",MAXBUF);
 286                 strlcat(buffer,u->second->host,MAXBUF);
 287                 if (match(buffer,mask.c_str()))
 288                         matches++;
 289         }
 290         float percent = ((float)matches / (float)clientlist.size()) * 100;
 291         if (percent > (float)atof(itrigger))
 292         {
 293                 WriteOpers("*** \2WARNING\2: %s tried to set a G/K/E line mask of %s, which covers %.2f%% of the network!",user->nick,mask.c_str(),percent);
 294                 return true;
 295         }
 296         return false;
 297 }
 298
 299 bool ip_matches_everyone(std::string ip, userrec* user)
 300 {
 301         char insanemasks[MAXBUF];
 302         char itrigger[MAXBUF];
 303         Config->ConfValue("insane","ipmasks",0,insanemasks,&Config->config_f);
 304         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 305         if (*itrigger == 0)
 306                 strlcpy(itrigger,"95.5",MAXBUF);
 307         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 308                 return false;
 309         long matches = 0;
 310         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 311         {
 312                 if (match(u->second->ip,ip.c_str()))
 313                         matches++;
 314         }
 315         float percent = ((float)matches / (float)clientlist.size()) * 100;
 316         if (percent > (float)atof(itrigger))
 317         {
 318                 WriteOpers("*** \2WARNING\2: %s tried to set a Z line mask of %s, which covers %.2f%% of the network!",user->nick,ip.c_str(),percent);
 319                 return true;
 320         }
 321         return false;
 322 }
 323
 324 bool nick_matches_everyone(std::string nick, userrec* user)
 325 {
 326         char insanemasks[MAXBUF];
 327         char itrigger[MAXBUF];
 328         Config->ConfValue("insane","nickmasks",0,insanemasks,&Config->config_f);
 329         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 330         if (*itrigger == 0)
 331                 strlcpy(itrigger,"95.5",MAXBUF);
 332         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 333                 return false;
 334         long matches = 0;
 335         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 336         {
 337                 if (match(u->second->nick,nick.c_str()))
 338                         matches++;
 339         }
 340         float percent = ((float)matches / (float)clientlist.size()) * 100;
 341         if (percent > (float)atof(itrigger))
 342         {
 343                 WriteOpers("*** \2WARNING\2: %s tried to set a Q line mask of %s, which covers %.2f%% of the network!",user->nick,nick.c_str(),percent);
 344                 return true;
 345         }
 346         return false;
 347 }