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 /* XXX - perhaps this should be in cmd_whois? -- w00t */
 115 void do_whois(userrec* user, userrec* dest,unsigned long signon, unsigned long idle, char* nick)
 116 {
 117         // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
 118         if (dest->registered == 7)
 119         {
 120                 WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
 121                 if ((user == dest) || (*user->oper))
 122                 {
 123                         WriteServ(user->fd,"378 %s %s :is connecting from *@%s %s",user->nick, dest->nick, dest->host, (char*)inet_ntoa(dest->ip4));
 124                 }
 125                 std::string cl = chlist(dest,user);
 126                 if (cl.length())
 127                 {
 128                         if (cl.length() > 400)
 129                         {
 130                                 split_chlist(user,dest,cl);
 131                         }
 132                         else
 133                         {
 134                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, cl.c_str());
 135                         }
 136                 }
 137                 if (*Config->HideWhoisServer)
 138                 {
 139                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, *user->oper ? dest->server : Config->HideWhoisServer, *user->oper ? GetServerDescription(dest->server).c_str() : Config->Network);
 140                 }
 141                 else
 142                 {
 143                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, GetServerDescription(dest->server).c_str());
 144                 }
 145                 if (*dest->awaymsg)
 146                 {
 147                         WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
 148                 }
 149                 if (*dest->oper)
 150                 {
 151                         WriteServ(user->fd,"313 %s %s :is %s %s on %s",user->nick, dest->nick, (strchr("aeiou",*dest->oper) ? "an" : "a"),dest->oper, Config->Network);
 152                 }
 153                 if ((!signon) && (!idle))
 154                 {
 155                         FOREACH_MOD(I_OnWhois,OnWhois(user,dest));
 156                 }
 157                 if (!strcasecmp(user->server,dest->server))
 158                 {
 159                         // idle time and signon line can only be sent if youre on the same server (according to RFC)
 160                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-TIME), dest->signon);
 161                 }
 162                 else
 163                 {
 164                         if ((idle) || (signon))
 165                                 WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, idle, signon);
 166                 }
 167                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
 168         }
 169         else
 170         {
 171                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, nick);
 172                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, nick);
 173         }
 174 }
 175
 176
 177 /* XXX - these really belong in helperfuncs perhaps -- w00t */
 178 bool is_uline(const char* server)
 179 {
 180         char ServName[MAXBUF];
 181
 182         if (!server)
 183                 return false;
 184         if (!(*server))
 185                 return true;
 186
 187         for (int i = 0; i < Config->ConfValueEnum("uline",&Config->config_f); i++)
 188         {
 189                 Config->ConfValue("uline","server",i,ServName,&Config->config_f);
 190                 if (!strcasecmp(server,ServName))
 191                 {
 192                         return true;
 193                 }
 194         }
 195         return false;
 196 }
 197
 198 int operstrcmp(char* data,char* input)
 199 {
 200         int MOD_RESULT = 0;
 201         FOREACH_RESULT(I_OnOperCompare,OnOperCompare(data,input))
 202         log(DEBUG,"operstrcmp: %d",MOD_RESULT);
 203         if (MOD_RESULT == 1)
 204                 return 0;
 205         if (MOD_RESULT == -1)
 206                 return 1;
 207         log(DEBUG,"strcmp fallback: '%s' '%s' %d",data,input,strcmp(data,input));
 208         return strcmp(data,input);
 209 }
 210
 211 long duration(const char* str)
 212 {
 213         char n_field[MAXBUF];
 214         long total = 0;
 215         const char* str_end = str + strlen(str);
 216         n_field[0] = 0;
 217
 218         if ((!strchr(str,'s')) && (!strchr(str,'m')) && (!strchr(str,'h')) && (!strchr(str,'d')) && (!strchr(str,'w')) && (!strchr(str,'y')))
 219         {
 220                 std::string n = str;
 221                 n = n + "s";
 222                 return duration(n.c_str());
 223         }
 224
 225         for (char* i = (char*)str; i < str_end; i++)
 226         {
 227                 // if we have digits, build up a string for the value in n_field,
 228                 // up to 10 digits in size.
 229                 if ((*i >= '0') && (*i <= '9'))
 230                 {
 231                         strlcat(n_field,i,10);
 232                 }
 233                 else
 234                 {
 235                         // we dont have a digit, check for numeric tokens
 236                         switch (tolower(*i))
 237                         {
 238                                 case 's':
 239                                         total += atoi(n_field);
 240                                 break;
 241
 242                                 case 'm':
 243                                         total += (atoi(n_field)*duration_m);
 244                                 break;
 245
 246                                 case 'h':
 247                                         total += (atoi(n_field)*duration_h);
 248                                 break;
 249
 250                                 case 'd':
 251                                         total += (atoi(n_field)*duration_d);
 252                                 break;
 253
 254                                 case 'w':
 255                                         total += (atoi(n_field)*duration_w);
 256                                 break;
 257
 258                                 case 'y':
 259                                         total += (atoi(n_field)*duration_y);
 260                                 break;
 261                         }
 262                         n_field[0] = 0;
 263                 }
 264         }
 265         // add trailing seconds
 266         total += atoi(n_field);
 267
 268         return total;
 269 }
 270
 271 /* All other ircds when doing this check usually just look for a string of *@* or *. We're smarter than that, though. */
 272
 273 bool host_matches_everyone(std::string mask, userrec* user)
 274 {
 275         char insanemasks[MAXBUF];
 276         char buffer[MAXBUF];
 277         char itrigger[MAXBUF];
 278         Config->ConfValue("insane","hostmasks",0,insanemasks,&Config->config_f);
 279         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 280         if (*itrigger == 0)
 281                 strlcpy(itrigger,"95.5",MAXBUF);
 282         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 283                 return false;
 284         long matches = 0;
 285         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 286         {
 287                 strlcpy(buffer,u->second->ident,MAXBUF);
 288                 strlcat(buffer,"@",MAXBUF);
 289                 strlcat(buffer,u->second->host,MAXBUF);
 290                 if (match(buffer,mask.c_str()))
 291                         matches++;
 292         }
 293         float percent = ((float)matches / (float)clientlist.size()) * 100;
 294         if (percent > (float)atof(itrigger))
 295         {
 296                 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);
 297                 return true;
 298         }
 299         return false;
 300 }
 301
 302 bool ip_matches_everyone(std::string ip, userrec* user)
 303 {
 304         char insanemasks[MAXBUF];
 305         char itrigger[MAXBUF];
 306         Config->ConfValue("insane","ipmasks",0,insanemasks,&Config->config_f);
 307         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 308         if (*itrigger == 0)
 309                 strlcpy(itrigger,"95.5",MAXBUF);
 310         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 311                 return false;
 312         long matches = 0;
 313         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 314         {
 315                 if (match((char*)inet_ntoa(u->second->ip4),ip.c_str()))
 316                         matches++;
 317         }
 318         float percent = ((float)matches / (float)clientlist.size()) * 100;
 319         if (percent > (float)atof(itrigger))
 320         {
 321                 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);
 322                 return true;
 323         }
 324         return false;
 325 }
 326
 327 bool nick_matches_everyone(std::string nick, userrec* user)
 328 {
 329         char insanemasks[MAXBUF];
 330         char itrigger[MAXBUF];
 331         Config->ConfValue("insane","nickmasks",0,insanemasks,&Config->config_f);
 332         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 333         if (*itrigger == 0)
 334                 strlcpy(itrigger,"95.5",MAXBUF);
 335         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 336                 return false;
 337         long matches = 0;
 338         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 339         {
 340                 if (match(u->second->nick,nick.c_str()))
 341                         matches++;
 342         }
 343         float percent = ((float)matches / (float)clientlist.size()) * 100;
 344         if (percent > (float)atof(itrigger))
 345         {
 346                 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);
 347                 return true;
 348         }
 349         return false;
 350 }