src/cmd_nick.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain.net>
   8  *                <Craig.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 <time.h>
  23 #include <string>
  24 #ifdef GCC3
  25 #include <ext/hash_map>
  26 #else
  27 #include <hash_map>
  28 #endif
  29 #include <map>
  30 #include <sstream>
  31 #include <vector>
  32 #include <deque>
  33 #include "users.h"
  34 #include "ctables.h"
  35 #include "globals.h"
  36 #include "modules.h"
  37 #include "dynamic.h"
  38 #include "wildcard.h"
  39 #include "message.h"
  40 #include "commands.h"
  41 #include "mode.h"
  42 #include "xline.h"
  43 #include "inspstring.h"
  44 #include "dnsqueue.h"
  45 #include "helperfuncs.h"
  46 #include "hashcomp.h"
  47 #include "socketengine.h"
  48 #include "typedefs.h"
  49 #include "command_parse.h"
  50 #include "cmd_nick.h"
  51
  52 extern ServerConfig* Config;
  53 extern InspIRCd* ServerInstance;
  54 extern int MODCOUNT;
  55 extern std::vector<Module*> modules;
  56 extern std::vector<ircd_module*> factory;
  57 extern time_t TIME;
  58 extern user_hash clientlist;
  59 extern chan_hash chanlist;
  60 extern whowas_hash whowas;
  61 extern std::vector<userrec*> all_opers;
  62 extern std::vector<userrec*> local_users;
  63 extern userrec* fd_ref_table[65536];
  64
  65 void cmd_nick::Handle (char **parameters, int pcnt, userrec *user)
  66 {
  67         if (pcnt < 1)
  68         {
  69                 log(DEBUG,"not enough params for handle_nick");
  70                 return;
  71         }
  72         if (!parameters[0])
  73         {
  74                 log(DEBUG,"invalid parameter passed to handle_nick");
  75                 return;
  76         }
  77         if (!parameters[0][0])
  78         {
  79                 log(DEBUG,"zero length new nick passed to handle_nick");
  80                 return;
  81         }
  82         if (!user)
  83         {
  84                 log(DEBUG,"invalid user passed to handle_nick");
  85                 return;
  86         }
  87         if (!user->nick)
  88         {
  89                 log(DEBUG,"invalid old nick passed to handle_nick");
  90                 return;
  91         }
  92         if (!strcasecmp(user->nick,parameters[0]))
  93         {
  94                 log(DEBUG,"old nick is new nick, skipping");
  95                 return;
  96         }
  97         else
  98         {
  99                 if (strlen(parameters[0]) > 1)
 100                 {
 101                         if (parameters[0][0] == ':')
 102                         {
 103                                 *parameters[0]++;
 104                         }
 105                 }
 106                 if (matches_qline(parameters[0]))
 107                 {
 108                         WriteOpers("*** Q-Lined nickname %s from %s!%s@%s: %s",parameters[0],user->nick,user->ident,user->host,matches_qline(parameters[0]));
 109                         WriteServ(user->fd,"432 %s %s :Invalid nickname: %s",user->nick,parameters[0],matches_qline(parameters[0]));
 110                         return;
 111                 }
 112                 if ((Find(parameters[0])) && (Find(parameters[0]) != user))
 113                 {
 114                         WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]);
 115                         return;
 116                 }
 117         }
 118         if (isnick(parameters[0]) == 0)
 119         {
 120                 WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
 121                 return;
 122         }
 123
 124         if (user->registered == 7)
 125         {
 126                 int MOD_RESULT = 0;
 127                 FOREACH_RESULT(OnUserPreNick(user,parameters[0]));
 128                 if (MOD_RESULT) {
 129                         // if a module returns true, the nick change is silently forbidden.
 130                         return;
 131                 }
 132
 133                 WriteCommon(user,"NICK %s",parameters[0]);
 134
 135         }
 136
 137         char oldnick[NICKMAX];
 138         strlcpy(oldnick,user->nick,NICKMAX);
 139
 140         /* change the nick of the user in the users_hash */
 141         user = ReHashNick(user->nick, parameters[0]);
 142         /* actually change the nick within the record */
 143         if (!user) return;
 144         if (!user->nick) return;
 145
 146         strlcpy(user->nick, parameters[0],NICKMAX);
 147
 148         log(DEBUG,"new nick set: %s",user->nick);
 149
 150         if (user->registered < 3)
 151         {
 152                 user->registered = (user->registered | 2);
 153                 // dont attempt to look up the dns until they pick a nick... because otherwise their pointer WILL change
 154                 // and unless we're lucky we'll get a duff one later on.
 155                 //user->dns_done = (!lookup_dns(user->nick));
 156                 //if (user->dns_done)
 157                 //      log(DEBUG,"Aborting dns lookup of %s because dns server experienced a failure.",user->nick);
 158
 159 #ifdef THREADED_DNS
 160                 // initialize their dns lookup thread
 161                 if (pthread_create(&user->dnsthread, NULL, dns_task, (void *)user) != 0)
 162                 {
 163                         log(DEBUG,"Failed to create DNS lookup thread for user %s",user->nick);
 164                 }
 165 #else
 166                 user->dns_done = (!lookup_dns(user->nick));
 167                 if (user->dns_done)
 168                         log(DEBUG,"Aborting dns lookup of %s because dns server experienced a failure.",user->nick);
 169 #endif
 170
 171         }
 172         if (user->registered == 3)
 173         {
 174                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
 175                 FOREACH_MOD OnUserRegister(user);
 176                 ConnectUser(user);
 177         }
 178         if (user->registered == 7)
 179         {
 180                 FOREACH_MOD OnUserPostNick(user,oldnick);
 181         }
 182 }
 183