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
  83 extern std::vector<userrec*> all_opers;
  84 extern std::vector<userrec*> local_users;
  85
  86 // This table references users by file descriptor.
  87 // its an array to make it VERY fast, as all lookups are referenced
  88 // by an integer, meaning there is no need for a scan/search operation.
  89 extern userrec* fd_ref_table[MAX_DESCRIPTORS];
  90
  91
  92 void split_chlist(userrec* user, userrec* dest, const std::string &cl)
  93 {
  94         std::string line;
  95         std::ostringstream prefix;
  96         std::string::size_type start, pos, length;
  97
  98         prefix << ":" << Config->ServerName << " 319 " << user->nick << " " << dest->nick << " :";
  99         line = prefix.str();
 100
 101         for (start = 0; pos = cl.find(' ', start); start = pos+1)
 102         {
 103                 length = (pos == std::string::npos) ? cl.length() : pos;
 104
 105                 if (line.length() + length - start > 510)
 106                 {
 107                         Write_NoFormat(user->fd, line.c_str());
 108                         line = prefix.str();
 109                 }
 110
 111                 if(pos == std::string::npos)
 112                 {
 113                         line += cl.substr(start, length - start);
 114                         break;
 115                 }
 116                 else
 117                 {
 118                         line += cl.substr(start, length - start + 1);
 119                 }
 120         }
 121
 122         if (line.length())
 123         {
 124                 Write_NoFormat(user->fd, line.c_str());
 125         }
 126 }
 127
 128 /* XXX - perhaps this should be in cmd_whois? -- w00t */
 129 void do_whois(userrec* user, userrec* dest,unsigned long signon, unsigned long idle, char* nick)
 130 {
 131         // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
 132         if (dest->registered == 7)
 133         {
 134                 WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
 135                 if ((user == dest) || (*user->oper))
 136                 {
 137                         WriteServ(user->fd,"378 %s %s :is connecting from *@%s %s",user->nick, dest->nick, dest->host, inet_ntoa(dest->ip4));
 138                 }
 139                 std::string cl = chlist(dest,user);
 140                 if (cl.length())
 141                 {
 142                         if (cl.length() > 400)
 143                         {
 144                                 split_chlist(user,dest,cl);
 145                         }
 146                         else
 147                         {
 148                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, cl.c_str());
 149                         }
 150                 }
 151                 if (*Config->HideWhoisServer && !(*user->oper))
 152                 {
 153                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, Config->HideWhoisServer, Config->Network);
 154                 }
 155                 else
 156                 {
 157                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, GetServerDescription(dest->server).c_str());
 158                 }
 159                 if (*dest->awaymsg)
 160                 {
 161                         WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
 162                 }
 163                 if (*dest->oper)
 164                 {
 165                         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);
 166                 }
 167                 if ((!signon) && (!idle))
 168                 {
 169                         FOREACH_MOD(I_OnWhois,OnWhois(user,dest));
 170                 }
 171                 if (!strcasecmp(user->server,dest->server))
 172                 {
 173                         // idle time and signon line can only be sent if youre on the same server (according to RFC)
 174                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-TIME), dest->signon);
 175                 }
 176                 else
 177                 {
 178                         if ((idle) || (signon))
 179                                 WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, idle, signon);
 180                 }
 181                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
 182         }
 183         else
 184         {
 185                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, nick);
 186                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, nick);
 187         }
 188 }
 189
 190
 191 /* XXX - these really belong in helperfuncs perhaps -- w00t */
 192 bool is_uline(const char* server)
 193 {
 194         if (!server)
 195                 return false;
 196         if (!*server)
 197                 return true;
 198
 199         return (find(Config->ulines.begin(),Config->ulines.end(),server) != Config->ulines.end());
 200 }
 201
 202 int operstrcmp(char* data,char* input)
 203 {
 204         int MOD_RESULT = 0;
 205         FOREACH_RESULT(I_OnOperCompare,OnOperCompare(data,input))
 206         log(DEBUG,"operstrcmp: %d",MOD_RESULT);
 207         if (MOD_RESULT == 1)
 208                 return 0;
 209         if (MOD_RESULT == -1)
 210                 return 1;
 211         log(DEBUG,"strcmp fallback: '%s' '%s' %d",data,input,strcmp(data,input));
 212         return strcmp(data,input);
 213 }
 214
 215 long duration(const char* str)
 216 {
 217         char n_field[MAXBUF];
 218         long total = 0;
 219         const char* str_end = str + strlen(str);
 220         n_field[0] = 0;
 221
 222         if ((!strchr(str,'s')) && (!strchr(str,'m')) && (!strchr(str,'h')) && (!strchr(str,'d')) && (!strchr(str,'w')) && (!strchr(str,'y')))
 223         {
 224                 std::string n = str;
 225                 n = n + "s";
 226                 return duration(n.c_str());
 227         }
 228
 229         for (char* i = (char*)str; i < str_end; i++)
 230         {
 231                 // if we have digits, build up a string for the value in n_field,
 232                 // up to 10 digits in size.
 233                 if ((*i >= '0') && (*i <= '9'))
 234                 {
 235                         strlcat(n_field,i,10);
 236                 }
 237                 else
 238                 {
 239                         // we dont have a digit, check for numeric tokens
 240                         switch (tolower(*i))
 241                         {
 242                                 case 's':
 243                                         total += atoi(n_field);
 244                                 break;
 245
 246                                 case 'm':
 247                                         total += (atoi(n_field)*duration_m);
 248                                 break;
 249
 250                                 case 'h':
 251                                         total += (atoi(n_field)*duration_h);
 252                                 break;
 253
 254                                 case 'd':
 255                                         total += (atoi(n_field)*duration_d);
 256                                 break;
 257
 258                                 case 'w':
 259                                         total += (atoi(n_field)*duration_w);
 260                                 break;
 261
 262                                 case 'y':
 263                                         total += (atoi(n_field)*duration_y);
 264                                 break;
 265                         }
 266                         n_field[0] = 0;
 267                 }
 268         }
 269         // add trailing seconds
 270         total += atoi(n_field);
 271
 272         return total;
 273 }
 274
 275 /* All other ircds when doing this check usually just look for a string of *@* or *. We're smarter than that, though. */
 276
 277 bool host_matches_everyone(const std::string &mask, userrec* user)
 278 {
 279         char insanemasks[MAXBUF];
 280         char buffer[MAXBUF];
 281         char itrigger[MAXBUF];
 282         Config->ConfValue("insane","hostmasks",0,insanemasks,&Config->config_f);
 283         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 284         if (*itrigger == 0)
 285                 strlcpy(itrigger,"95.5",MAXBUF);
 286         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 287                 return false;
 288         long matches = 0;
 289         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 290         {
 291                 strlcpy(buffer,u->second->ident,MAXBUF);
 292                 charlcat(buffer,'@',MAXBUF);
 293                 strlcat(buffer,u->second->host,MAXBUF);
 294                 if (match(buffer,mask.c_str()))
 295                         matches++;
 296         }
 297         float percent = ((float)matches / (float)clientlist.size()) * 100;
 298         if (percent > (float)atof(itrigger))
 299         {
 300                 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);
 301                 return true;
 302         }
 303         return false;
 304 }
 305
 306 bool ip_matches_everyone(const std::string &ip, userrec* user)
 307 {
 308         char insanemasks[MAXBUF];
 309         char itrigger[MAXBUF];
 310         Config->ConfValue("insane","ipmasks",0,insanemasks,&Config->config_f);
 311         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 312         if (*itrigger == 0)
 313                 strlcpy(itrigger,"95.5",MAXBUF);
 314         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 315                 return false;
 316         long matches = 0;
 317         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 318         {
 319                 if (match((char*)inet_ntoa(u->second->ip4),ip.c_str()))
 320                         matches++;
 321         }
 322         float percent = ((float)matches / (float)clientlist.size()) * 100;
 323         if (percent > (float)atof(itrigger))
 324         {
 325                 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);
 326                 return true;
 327         }
 328         return false;
 329 }
 330
 331 bool nick_matches_everyone(const std::string &nick, userrec* user)
 332 {
 333         char insanemasks[MAXBUF];
 334         char itrigger[MAXBUF];
 335         Config->ConfValue("insane","nickmasks",0,insanemasks,&Config->config_f);
 336         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 337         if (*itrigger == 0)
 338                 strlcpy(itrigger,"95.5",MAXBUF);
 339         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 340                 return false;
 341         long matches = 0;
 342         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 343         {
 344                 if (match(u->second->nick,nick.c_str()))
 345                         matches++;
 346         }
 347         float percent = ((float)matches / (float)clientlist.size()) * 100;
 348         if (percent > (float)atof(itrigger))
 349         {
 350                 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);
 351                 return true;
 352         }
 353         return false;
 354 }