-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include "configreader.h"\r#include "users.h"\r#include "modules.h"\r#include "xline.h"\r#include "commands/cmd_nick.h"\r\rextern "C" DllExport command_t* init_command(InspIRCd* Instance)\r{\r return new cmd_nick(Instance);\r}\r\r/** Handle nick changes from users.\r * NOTE: If you are used to ircds based on ircd2.8, and are looking\r * for the client introduction code in here, youre in the wrong place.\r * You need to look in the spanningtree module for this!\r */\rCmdResult cmd_nick::Handle (const char** parameters, int pcnt, userrec *user)\r{\r char oldnick[NICKMAX];\r\r if (!*parameters[0] || !*user->nick)\r {\r /* We cant put blanks in the parameters, so for this (extremely rare) issue we just put '*' here. */\r user->WriteServ("432 %s * :Erroneous Nickname", *user->nick ? user->nick : "*");\r return CMD_FAILURE;\r }\r\r if (irc::string(user->nick) == irc::string(parameters[0]))\r {\r /* If its exactly the same, even case, dont do anything. */\r if (!strcmp(user->nick,parameters[0]))\r return CMD_SUCCESS;\r\r /* Its a change of case. People insisted that they should be\r * able to do silly things like this even though the RFC says\r * the nick AAA is the same as the nick aaa.\r */\r strlcpy(oldnick, user->nick, NICKMAX - 1);\r int MOD_RESULT = 0;\r FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));\r if (MOD_RESULT)\r return CMD_FAILURE;\r if (user->registered == REG_ALL)\r user->WriteCommon("NICK %s",parameters[0]);\r strlcpy(user->nick, parameters[0], NICKMAX - 1);\r user->InvalidateCache();\r FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));\r return CMD_SUCCESS;\r }\r else\r {\r QLine* mq = ServerInstance->XLines->matches_qline(parameters[0]);\r if (mq)\r {\r ServerInstance->SNO->WriteToSnoMask('x', "Q-Lined nickname %s from %s!%s@%s: %s", parameters[0], user->nick, user->ident, user->host, mq->reason);\r user->WriteServ("432 %s %s :Invalid nickname: %s",user->nick,parameters[0], mq->reason);\r return CMD_FAILURE;\r }\r /* Check for nickname overruled -\r * This happens when one user has connected and sent only NICK, and is essentially\r * "camping" upon a nickname. To give the new user connecting a fair chance of having\r * the nickname too, we force a nickchange on the older user (Simply the one who was\r * here first, no TS checks need to take place here)\r */\r userrec* InUse = ServerInstance->FindNick(parameters[0]);\r if (InUse && (InUse != user) && (ServerInstance->IsNick(parameters[0])))\r {\r if (InUse->registered != REG_ALL)\r {\r /* change the nick of the older user to nnn-overruled,\r * where nnn is their file descriptor. We know this to be unique.\r * NOTE: We must do this and not quit the user, even though we do\r * not have UID support yet. This is because if we set this user\r * as quitting and then introduce the new user before the old one\r * has quit, then the user hash gets totally buggered.\r * (Yes, that is a technical term). -- Brain\r */\r std::string changeback = ConvToStr(InUse->GetFd()) + "-overruled";\r InUse->WriteTo(InUse, "NICK %s", changeback.c_str());\r InUse->WriteServ("433 %s %s :Nickname overruled.", InUse->nick, InUse->nick);\r InUse->UpdateNickHash(changeback.c_str());\r strlcpy(InUse->nick, changeback.c_str(), NICKMAX - 1);\r InUse->InvalidateCache();\r /* Take away their nickname-sent state forcing them to send a nick again */\r InUse->registered &= ~REG_NICK;\r }\r else\r {\r user->WriteServ("433 %s %s :Nickname is already in use.", user->registered >= REG_NICK ? user->nick : "*", parameters[0]);\r return CMD_FAILURE;\r }\r }\r }\r if ((!ServerInstance->IsNick(parameters[0])) && (IS_LOCAL(user)))\r {\r user->WriteServ("432 %s %s :Erroneous Nickname",user->nick,parameters[0]);\r return CMD_FAILURE;\r }\r\r if (user->registered == REG_ALL)\r {\r int MOD_RESULT = 0;\r FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));\r if (MOD_RESULT) {\r // if a module returns true, the nick change is silently forbidden.\r return CMD_FAILURE;\r }\r\r user->WriteCommon("NICK %s",parameters[0]);\r\r }\r\r strlcpy(oldnick, user->nick, NICKMAX - 1);\r\r /* change the nick of the user in the users_hash */\r user = user->UpdateNickHash(parameters[0]);\r\r /* actually change the nick within the record */\r if (!user) return CMD_FAILURE;\r if (!*user->nick) return CMD_FAILURE;\r\r strlcpy(user->nick, parameters[0], NICKMAX - 1);\r\r user->InvalidateCache();\r\r /* Update display nicks */\r for (UCListIter v = user->chans.begin(); v != user->chans.end(); v++)\r {\r CUList* ulist = v->first->GetUsers();\r CUList::iterator i = ulist->find(user);\r if (i != ulist->end())\r i->second = user->nick;\r }\r\r if (user->registered < REG_NICKUSER)\r {\r user->registered = (user->registered | REG_NICK);\r\r if (ServerInstance->Config->NoUserDns)\r {\r user->dns_done = true;\r ServerInstance->next_call = ServerInstance->Time();\r }\r else\r {\r user->StartDNSLookup();\r if (user->dns_done)\r {\r /* Cached result or instant failure - fall right through if possible */\r ServerInstance->next_call = ServerInstance->Time();\r }\r else\r {\r if (ServerInstance->next_call > ServerInstance->Time() + ServerInstance->Config->dns_timeout)\r ServerInstance->next_call = ServerInstance->Time() + ServerInstance->Config->dns_timeout;\r }\r }\r }\r if (user->registered == REG_NICKUSER)\r {\r /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */\r int MOD_RESULT = 0;\r FOREACH_RESULT(I_OnUserRegister,OnUserRegister(user));\r if (MOD_RESULT > 0)\r return CMD_FAILURE;\r }\r if (user->registered == REG_ALL)\r {\r FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));\r }\r\r return CMD_SUCCESS;\r\r}\r\r
\ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include "xline.h"
+#include "commands/cmd_nick.h"
+
+extern "C" DllExport command_t* init_command(InspIRCd* Instance)
+{
+ return new cmd_nick(Instance);
+}
+
+/** Handle nick changes from users.
+ * NOTE: If you are used to ircds based on ircd2.8, and are looking
+ * for the client introduction code in here, youre in the wrong place.
+ * You need to look in the spanningtree module for this!
+ */
+CmdResult cmd_nick::Handle (const char** parameters, int pcnt, userrec *user)
+{
+ char oldnick[NICKMAX];
+
+ if (!*parameters[0] || !*user->nick)
+ {
+ /* We cant put blanks in the parameters, so for this (extremely rare) issue we just put '*' here. */
+ user->WriteServ("432 %s * :Erroneous Nickname", *user->nick ? user->nick : "*");
+ return CMD_FAILURE;
+ }
+
+ if (irc::string(user->nick) == irc::string(parameters[0]))
+ {
+ /* If its exactly the same, even case, dont do anything. */
+ if (!strcmp(user->nick,parameters[0]))
+ return CMD_SUCCESS;
+
+ /* Its a change of case. People insisted that they should be
+ * able to do silly things like this even though the RFC says
+ * the nick AAA is the same as the nick aaa.
+ */
+ strlcpy(oldnick, user->nick, NICKMAX - 1);
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
+ if (MOD_RESULT)
+ return CMD_FAILURE;
+ if (user->registered == REG_ALL)
+ user->WriteCommon("NICK %s",parameters[0]);
+ strlcpy(user->nick, parameters[0], NICKMAX - 1);
+ user->InvalidateCache();
+ FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
+ return CMD_SUCCESS;
+ }
+ else
+ {
+ QLine* mq = ServerInstance->XLines->matches_qline(parameters[0]);
+ if (mq)
+ {
+ ServerInstance->SNO->WriteToSnoMask('x', "Q-Lined nickname %s from %s!%s@%s: %s", parameters[0], user->nick, user->ident, user->host, mq->reason);
+ user->WriteServ("432 %s %s :Invalid nickname: %s",user->nick,parameters[0], mq->reason);
+ return CMD_FAILURE;
+ }
+ /* Check for nickname overruled -
+ * This happens when one user has connected and sent only NICK, and is essentially
+ * "camping" upon a nickname. To give the new user connecting a fair chance of having
+ * the nickname too, we force a nickchange on the older user (Simply the one who was
+ * here first, no TS checks need to take place here)
+ */
+ userrec* InUse = ServerInstance->FindNickOnly(parameters[0]);
+ if (InUse && (InUse != user) && ((ServerInstance->IsNick(parameters[0]) || allowinvalid)))
+ {
+ if (InUse->registered != REG_ALL)
+ {
+ /* change the nick of the older user to its UUID
+ */
+ InUse->WriteTo(InUse, "NICK %s", InUse->uuid);
+ InUse->WriteServ("433 %s %s :Nickname overruled.", InUse->nick, InUse->nick);
+ InUse->UpdateNickHash(InUse->uuid);
+ strlcpy(InUse->nick, InUse->uuid, NICKMAX - 1);
+ InUse->InvalidateCache();
+ /* Take away their nickname-sent state forcing them to send a nick again */
+ InUse->registered &= ~REG_NICK;
+ }
+ else
+ {
+ user->WriteServ("433 %s %s :Nickname is already in use.", user->registered >= REG_NICK ? user->nick : "*", parameters[0]);
+ return CMD_FAILURE;
+ }
+ }
+ }
+ if (((!ServerInstance->IsNick(parameters[0]))) && (IS_LOCAL(user)))
+ {
+ if (!allowinvalid)
+ {
+ user->WriteServ("432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
+ return CMD_FAILURE;
+ }
+ }
+
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnUserPreNick,OnUserPreNick(user,parameters[0]));
+ if (MOD_RESULT)
+ // if a module returns true, the nick change is silently forbidden.
+ return CMD_FAILURE;
+
+ if (user->registered == REG_ALL)
+ user->WriteCommon("NICK %s",parameters[0]);
+
+ strlcpy(oldnick, user->nick, NICKMAX - 1);
+
+ /* change the nick of the user in the users_hash */
+ user = user->UpdateNickHash(parameters[0]);
+
+ /* actually change the nick within the record */
+ if (!user)
+ return CMD_FAILURE;
+ if (!*user->nick)
+ return CMD_FAILURE;
+
+ strlcpy(user->nick, parameters[0], NICKMAX - 1);
+
+ user->InvalidateCache();
+
+ /* Update display nicks */
+ for (UCListIter v = user->chans.begin(); v != user->chans.end(); v++)
+ {
+ CUList* ulist = v->first->GetUsers();
+ CUList::iterator i = ulist->find(user);
+ if (i != ulist->end())
+ i->second = user->nick;
+ }
+
+ if (user->registered < REG_NICKUSER)
+ {
+ user->registered = (user->registered | REG_NICK);
+
+ if (ServerInstance->Config->NoUserDns)
+ {
+ user->dns_done = true;
+ ServerInstance->next_call = ServerInstance->Time();
+ }
+ else
+ {
+ user->StartDNSLookup();
+ if (user->dns_done)
+ {
+ /* Cached result or instant failure - fall right through if possible */
+ ServerInstance->next_call = ServerInstance->Time();
+ }
+ else
+ {
+ if (ServerInstance->next_call > ServerInstance->Time() + ServerInstance->Config->dns_timeout)
+ ServerInstance->next_call = ServerInstance->Time() + ServerInstance->Config->dns_timeout;
+ }
+ }
+ }
+ if (user->registered == REG_NICKUSER)
+ {
+ /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnUserRegister,OnUserRegister(user));
+ if (MOD_RESULT > 0)
+ return CMD_FAILURE;
+ }
+ if (user->registered == REG_ALL)
+ {
+ FOREACH_MOD(I_OnUserPostNick,OnUserPostNick(user,oldnick));
+ }
+
+ return CMD_SUCCESS;
+
+}
+
+CmdResult cmd_nick::HandleInternal(const unsigned int id, const std::deque<classbase*> ¶meters)
+{
+ allowinvalid = (id != 0);
+ return CMD_SUCCESS;
+}
+
projects / user / henk / code / inspircd.git / blobdiff