src/commands.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 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 char* CleanFilename(char* name)
  93 {
  94         char* p = name + strlen(name);
  95         while ((p != name) && (*p != '/')) p--;
  96         return (p != name ? ++p : p);
  97 }
  98
  99 void split_chlist(userrec* user, userrec* dest, std::string &cl)
 100 {
 101         std::stringstream channels(cl);
 102         std::string line = "";
 103         std::string cname = "";
 104         while (!channels.eof())
 105         {
 106                 channels >> cname;
 107                 line = line + cname + " ";
 108                 if (line.length() > 400)
 109                 {
 110                         WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, line.c_str());
 111                         line = "";
 112                 }
 113         }
 114         if (line.length())
 115         {
 116                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, line.c_str());
 117         }
 118 }
 119
 120 void do_whois(userrec* user, userrec* dest,unsigned long signon, unsigned long idle, char* nick)
 121 {
 122         // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
 123         if (dest->registered == 7)
 124         {
 125                 WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
 126                 if ((user == dest) || (strchr(user->modes,'o')))
 127                 {
 128                         WriteServ(user->fd,"378 %s %s :is connecting from *@%s %s",user->nick, dest->nick, dest->host, dest->ip);
 129                 }
 130                 std::string cl = chlist(dest,user);
 131                 if (cl.length())
 132                 {
 133                         if (cl.length() > 400)
 134                         {
 135                                 split_chlist(user,dest,cl);
 136                         }
 137                         else
 138                         {
 139                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, cl.c_str());
 140                         }
 141                 }
 142                 WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, GetServerDescription(dest->server).c_str());
 143                 if (*dest->awaymsg)
 144                 {
 145                         WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
 146                 }
 147                 if (strchr(dest->modes,'o'))
 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[0]) ? "an" : "a"),dest->oper, Config->Network);
 152                         }
 153                         else
 154                         {
 155                                 WriteServ(user->fd,"313 %s %s :is opered but has an unknown type",user->nick, dest->nick);
 156                         }
 157                 }
 158                 if ((!signon) && (!idle))
 159                 {
 160                         FOREACH_MOD(I_OnWhois,OnWhois(user,dest));
 161                 }
 162                 if (!strcasecmp(user->server,dest->server))
 163                 {
 164                         // idle time and signon line can only be sent if youre on the same server (according to RFC)
 165                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-TIME), dest->signon);
 166                 }
 167                 else
 168                 {
 169                         if ((idle) || (signon))
 170                                 WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, idle, signon);
 171                 }
 172                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
 173         }
 174         else
 175         {
 176                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, nick);
 177                 WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, nick);
 178         }
 179 }
 180
 181 bool is_uline(const char* server)
 182 {
 183         char ServName[MAXBUF];
 184
 185         if (!server)
 186                 return false;
 187         if (!(*server))
 188                 return true;
 189
 190         for (int i = 0; i < Config->ConfValueEnum("uline",&Config->config_f); i++)
 191         {
 192                 Config->ConfValue("uline","server",i,ServName,&Config->config_f);
 193                 if (!strcasecmp(server,ServName))
 194                 {
 195                         return true;
 196                 }
 197         }
 198         return false;
 199 }
 200
 201 int operstrcmp(char* data,char* input)
 202 {
 203         int MOD_RESULT = 0;
 204         FOREACH_RESULT(I_OnOperCompare,OnOperCompare(data,input))
 205         log(DEBUG,"operstrcmp: %d",MOD_RESULT);
 206         if (MOD_RESULT == 1)
 207                 return 0;
 208         if (MOD_RESULT == -1)
 209                 return 1;
 210         log(DEBUG,"strcmp fallback: '%s' '%s' %d",data,input,strcmp(data,input));
 211         return strcmp(data,input);
 212 }
 213
 214 long duration(const char* str)
 215 {
 216         char n_field[MAXBUF];
 217         long total = 0;
 218         const char* str_end = str + strlen(str);
 219         n_field[0] = 0;
 220
 221         if ((!strchr(str,'s')) && (!strchr(str,'m')) && (!strchr(str,'h')) && (!strchr(str,'d')) && (!strchr(str,'w')) && (!strchr(str,'y')))
 222         {
 223                 std::string n = str;
 224                 n = n + "s";
 225                 return duration(n.c_str());
 226         }
 227
 228         for (char* i = (char*)str; i < str_end; i++)
 229         {
 230                 // if we have digits, build up a string for the value in n_field,
 231                 // up to 10 digits in size.
 232                 if ((*i >= '0') && (*i <= '9'))
 233                 {
 234                         strlcat(n_field,i,10);
 235                 }
 236                 else
 237                 {
 238                         // we dont have a digit, check for numeric tokens
 239                         switch (tolower(*i))
 240                         {
 241                                 case 's':
 242                                         total += atoi(n_field);
 243                                 break;
 244
 245                                 case 'm':
 246                                         total += (atoi(n_field)*duration_m);
 247                                 break;
 248
 249                                 case 'h':
 250                                         total += (atoi(n_field)*duration_h);
 251                                 break;
 252
 253                                 case 'd':
 254                                         total += (atoi(n_field)*duration_d);
 255                                 break;
 256
 257                                 case 'w':
 258                                         total += (atoi(n_field)*duration_w);
 259                                 break;
 260
 261                                 case 'y':
 262                                         total += (atoi(n_field)*duration_y);
 263                                 break;
 264                         }
 265                         n_field[0] = 0;
 266                 }
 267         }
 268         // add trailing seconds
 269         total += atoi(n_field);
 270
 271         return total;
 272 }
 273
 274 /* All other ircds when doing this check usually just look for a string of *@* or *. We're smarter than that, though. */
 275
 276 bool host_matches_everyone(std::string mask, userrec* user)
 277 {
 278         char insanemasks[MAXBUF];
 279         char buffer[MAXBUF];
 280         char itrigger[MAXBUF];
 281         Config->ConfValue("insane","hostmasks",0,insanemasks,&Config->config_f);
 282         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 283         if (*itrigger == 0)
 284                 strlcpy(itrigger,"95.5",MAXBUF);
 285         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 286                 return false;
 287         long matches = 0;
 288         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 289         {
 290                 strlcpy(buffer,u->second->ident,MAXBUF);
 291                 strlcat(buffer,"@",MAXBUF);
 292                 strlcat(buffer,u->second->host,MAXBUF);
 293                 if (match(buffer,mask.c_str()))
 294                         matches++;
 295         }
 296         float percent = ((float)matches / (float)clientlist.size()) * 100;
 297         if (percent > (float)atof(itrigger))
 298         {
 299                 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);
 300                 return true;
 301         }
 302         return false;
 303 }
 304
 305 bool ip_matches_everyone(std::string ip, userrec* user)
 306 {
 307         char insanemasks[MAXBUF];
 308         char itrigger[MAXBUF];
 309         Config->ConfValue("insane","ipmasks",0,insanemasks,&Config->config_f);
 310         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 311         if (*itrigger == 0)
 312                 strlcpy(itrigger,"95.5",MAXBUF);
 313         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 314                 return false;
 315         long matches = 0;
 316         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 317         {
 318                 if (match(u->second->ip,ip.c_str()))
 319                         matches++;
 320         }
 321         float percent = ((float)matches / (float)clientlist.size()) * 100;
 322         if (percent > (float)atof(itrigger))
 323         {
 324                 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);
 325                 return true;
 326         }
 327         return false;
 328 }
 329
 330 bool nick_matches_everyone(std::string nick, userrec* user)
 331 {
 332         char insanemasks[MAXBUF];
 333         char itrigger[MAXBUF];
 334         Config->ConfValue("insane","nickmasks",0,insanemasks,&Config->config_f);
 335         Config->ConfValue("insane","trigger",0,itrigger,&Config->config_f);
 336         if (*itrigger == 0)
 337                 strlcpy(itrigger,"95.5",MAXBUF);
 338         if ((*insanemasks == 'y') || (*insanemasks == 't') || (*insanemasks == '1'))
 339                 return false;
 340         long matches = 0;
 341         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
 342         {
 343                 if (match(u->second->nick,nick.c_str()))
 344                         matches++;
 345         }
 346         float percent = ((float)matches / (float)clientlist.size()) * 100;
 347         if (percent > (float)atof(itrigger))
 348         {
 349                 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);
 350                 return true;
 351         }
 352         return false;
 353 }