/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2008 Alexander Barton (alex@barton.de)
*
- * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
- * der GNU General Public License (GPL), wie von der Free Software Foundation
- * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
- * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
- * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
- * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * Please read the file COPYING, README and AUTHORS for more information.
*
- * $Id: irc-login.c,v 1.12 2002/04/08 16:37:50 alex Exp $
- *
- * irc-login.c: Anmeldung und Abmeldung im IRC
+ * Login and logout
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <strings.h>
#include "ngircd.h"
+#include "resolve.h"
+#include "conn-func.h"
#include "conf.h"
-#include "irc.h"
-#include "irc-write.h"
+#include "client.h"
+#include "channel.h"
#include "log.h"
#include "messages.h"
+#include "parse.h"
+#include "irc.h"
+#include "irc-info.h"
+#include "irc-write.h"
#include "exp.h"
#include "irc-login.h"
-LOCAL BOOLEAN Hello_User( CLIENT *Client );
-LOCAL VOID Kill_Nick( CHAR *Nick, CHAR *Reason );
+typedef struct _INTRO_INFO {
+ char *nick; /* Nick name */
+ int hopcount; /* Hop count */
+ char *user; /* User name */
+ char *host; /* Host name */
+ CLIENT *server; /* Server the client is connected to */
+ char *mode; /* User modes */
+ char *name; /* Real name */
+} INTRO_INFO;
+
+static bool Hello_User PARAMS(( CLIENT *Client ));
+static void Kill_Nick PARAMS(( char *Nick, char *Reason ));
+static void Introduce_Client PARAMS((CLIENT *From, char *Nick,
+ const int HopCount, char *User,
+ char *Host, CLIENT *Server,
+ char *Mode, char *Name ));
+static void cb_introduceClient PARAMS((CLIENT *Client, CLIENT *Prefix,
+ void *i));
-GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
+
+/**
+ * Handler for the IRC command "PASS".
+ * See RFC 2813 section 4.1.1, and RFC 2812 section 3.1.1.
+ */
+GLOBAL bool
+IRC_PASS( CLIENT *Client, REQUEST *Req )
{
+ char *type, *orig_flags;
+ int protohigh, protolow;
+
assert( Client != NULL );
assert( Req != NULL );
- /* Fehler liefern, wenn kein lokaler Client */
- if( Client_Conn( Client ) <= NONE ) return IRC_WriteStrClient( Client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( Client ), Req->command );
-
- if(( Client_Type( Client ) == CLIENT_UNKNOWN ) && ( Req->argc == 1))
- {
- /* noch nicht registrierte unbekannte Verbindung */
- Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client_Conn( Client ));
+ /* Return an error if this is not a local client */
+ if (Client_Conn(Client) <= NONE)
+ return IRC_WriteStrClient(Client, ERR_UNKNOWNCOMMAND_MSG,
+ Client_ID(Client), Req->command);
+
+ if (Client_Type(Client) == CLIENT_UNKNOWN && Req->argc == 1) {
+ /* Not yet registered "unknown" connection, PASS with one
+ * argument: either a regular client, service, or server
+ * using the old RFC 1459 section 4.1.1 syntax. */
+ LogDebug("Connection %d: got PASS command (RFC 1459) ...",
+ Client_Conn(Client));
+ } else if ((Client_Type(Client) == CLIENT_UNKNOWN ||
+ Client_Type(Client) == CLIENT_UNKNOWNSERVER) &&
+ (Req->argc == 3 || Req->argc == 4)) {
+ /* Not yet registered "unknown" connection or outgoing server
+ * link, PASS with three or four argument: server using the
+ * RFC 2813 section 4.1.1 syntax. */
+ LogDebug("Connection %d: got PASS command (RFC 2813, new server link) ...",
+ Client_Conn(Client));
+ } else if (Client_Type(Client) == CLIENT_UNKNOWN ||
+ Client_Type(Client) == CLIENT_UNKNOWNSERVER) {
+ /* Unregistered connection, but wrong number of arguments: */
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+ } else {
+ /* Registered connection, PASS command is not allowed! */
+ return IRC_WriteStrClient(Client, ERR_ALREADYREGISTRED_MSG,
+ Client_ID(Client));
+ }
- /* Passwort speichern */
- Client_SetPassword( Client, Req->argv[0] );
+ Client_SetPassword(Client, Req->argv[0]);
- Client_SetType( Client, CLIENT_GOTPASS );
- return CONNECTED;
- }
- else if((( Client_Type( Client ) == CLIENT_UNKNOWN ) || ( Client_Type( Client ) == CLIENT_UNKNOWNSERVER )) && (( Req->argc == 3 ) || ( Req->argc == 4 )))
- {
- /* noch nicht registrierte Server-Verbindung */
- Log( LOG_DEBUG, "Connection %d: got PASS command (new server link) ...", Client_Conn( Client ));
+ /* Protocol version */
+ if (Req->argc >= 2 && strlen(Req->argv[1]) >= 4) {
+ int c2, c4;
- /* Passwort speichern */
- Client_SetPassword( Client, Req->argv[0] );
+ c2 = Req->argv[1][2];
+ c4 = Req->argv[1][4];
- Client_SetType( Client, CLIENT_GOTPASSSERVER );
- return CONNECTED;
+ Req->argv[1][4] = '\0';
+ protolow = atoi(&Req->argv[1][2]);
+ Req->argv[1][2] = '\0';
+ protohigh = atoi(Req->argv[1]);
+
+ Req->argv[1][2] = c2;
+ Req->argv[1][4] = c4;
+
+ Client_SetType(Client, CLIENT_GOTPASS_2813);
+ } else {
+ protohigh = protolow = 0;
+ Client_SetType(Client, CLIENT_GOTPASS);
}
- else if(( Client_Type( Client ) == CLIENT_UNKNOWN ) || ( Client_Type( Client ) == CLIENT_UNKNOWNSERVER ))
- {
- /* Falsche Anzahl Parameter? */
- return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+
+ /* Protocol type, see doc/Protocol.txt */
+ if (Req->argc >= 2 && strlen(Req->argv[1]) > 4)
+ type = &Req->argv[1][4];
+ else
+ type = NULL;
+
+ /* Protocol flags/options */
+ if (Req->argc >= 4)
+ orig_flags = Req->argv[3];
+ else
+ orig_flags = "";
+
+ /* Implementation, version and IRC+ flags */
+ if (Req->argc >= 3) {
+ char *impl, *ptr, *serverver, *flags;
+
+ impl = Req->argv[2];
+ ptr = strchr(impl, '|');
+ if (ptr)
+ *ptr = '\0';
+
+ if (type && strcmp(type, PROTOIRCPLUS) == 0) {
+ /* The peer seems to be a server which supports the
+ * IRC+ protocol (see doc/Protocol.txt). */
+ serverver = ptr + 1;
+ flags = strchr(serverver, ':');
+ if (flags) {
+ *flags = '\0';
+ flags++;
+ } else
+ flags = "";
+ Log(LOG_INFO,
+ "Peer announces itself as %s-%s using protocol %d.%d/IRC+ (flags: \"%s\").",
+ impl, serverver, protohigh, protolow, flags);
+ } else {
+ /* The peer seems to be a server supporting the
+ * "original" IRC protocol (RFC 2813). */
+ serverver = "";
+ if (strchr(orig_flags, 'Z'))
+ flags = "Z";
+ else
+ flags = "";
+ Log(LOG_INFO,
+ "Peer announces itself as \"%s\" using protocol %d.%d (flags: \"%s\").",
+ impl, protohigh, protolow, flags);
+ }
+ Client_SetFlags(Client, flags);
}
- else return IRC_WriteStrClient( Client, ERR_ALREADYREGISTRED_MSG, Client_ID( Client ));
+
+ return CONNECTED;
} /* IRC_PASS */
-GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
+/**
+ * IRC "NICK" command.
+ * This function implements the IRC command "NICK" which is used to register
+ * with the server, to change already registered nicknames and to introduce
+ * new users which are connected to other servers.
+ */
+GLOBAL bool
+IRC_NICK( CLIENT *Client, REQUEST *Req )
{
CLIENT *intr_c, *target, *c;
- CHAR *modes;
+ char *nick, *user, *hostname, *modes, *info;
+ int token, hops;
assert( Client != NULL );
assert( Req != NULL );
- /* Zumindest BitchX sendet NICK-USER in der falschen Reihenfolge. */
#ifndef STRICT_RFC
- if( Client_Type( Client ) == CLIENT_UNKNOWN || Client_Type( Client ) == CLIENT_GOTPASS || Client_Type( Client ) == CLIENT_GOTNICK || Client_Type( Client ) == CLIENT_GOTUSER || Client_Type( Client ) == CLIENT_USER || ( Client_Type( Client ) == CLIENT_SERVER && Req->argc == 1 ))
+ /* Some IRC clients, for example BitchX, send the NICK and USER
+ * commands in the wrong order ... */
+ if( Client_Type( Client ) == CLIENT_UNKNOWN
+ || Client_Type( Client ) == CLIENT_GOTPASS
+ || Client_Type( Client ) == CLIENT_GOTNICK
+ || Client_Type( Client ) == CLIENT_GOTUSER
+ || Client_Type( Client ) == CLIENT_USER
+ || ( Client_Type( Client ) == CLIENT_SERVER && Req->argc == 1 ))
#else
- if( Client_Type( Client ) == CLIENT_UNKNOWN || Client_Type( Client ) == CLIENT_GOTPASS || Client_Type( Client ) == CLIENT_GOTNICK || Client_Type( Client ) == CLIENT_USER || ( Client_Type( Client ) == CLIENT_SERVER && Req->argc == 1 ))
+ if( Client_Type( Client ) == CLIENT_UNKNOWN
+ || Client_Type( Client ) == CLIENT_GOTPASS
+ || Client_Type( Client ) == CLIENT_GOTNICK
+ || Client_Type( Client ) == CLIENT_USER
+ || ( Client_Type( Client ) == CLIENT_SERVER && Req->argc == 1 ))
#endif
{
- /* User-Registrierung bzw. Nick-Aenderung */
+ /* User registration or change of nickname */
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* Wrong number of arguments? */
+ if( Req->argc != 1 )
+ return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID( Client ),
+ Req->command );
- /* "Ziel-Client" ermitteln */
+ /* Search "target" client */
if( Client_Type( Client ) == CLIENT_SERVER )
{
target = Client_Search( Req->prefix );
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
+ if( ! target )
+ return IRC_WriteStrClient( Client,
+ ERR_NOSUCHNICK_MSG,
+ Client_ID( Client ),
+ Req->argv[0] );
}
else
{
- /* Ist der Client "restricted"? */
- if( Client_HasMode( Client, 'r' )) return IRC_WriteStrClient( Client, ERR_RESTRICTED_MSG, Client_ID( Client ));
+ /* Is this a restricted client? */
+ if( Client_HasMode( Client, 'r' ))
+ return IRC_WriteStrClient( Client,
+ ERR_RESTRICTED_MSG,
+ Client_ID( Client ));
+
target = Client;
}
#ifndef STRICT_RFC
- /* Wenn der Client zu seinem eigenen Nick wechseln will, so machen
- * wir nichts. So macht es das Original und mind. Snak hat probleme,
- * wenn wir es nicht so machen. Ob es so okay ist? Hm ... */
- if( strcmp( Client_ID( target ), Req->argv[0] ) == 0 ) return CONNECTED;
+ /* If the clients tries to change to its own nickname we won't
+ * do anything. This is how the original ircd behaves and some
+ * clients (for example Snak) expect it to be like this.
+ * But I doubt that this is "really the right thing" ... */
+ if( strcmp( Client_ID( target ), Req->argv[0] ) == 0 )
+ return CONNECTED;
#endif
- /* pruefen, ob Nick bereits vergeben. Speziallfall: der Client
- * will nur die Gross- und Kleinschreibung aendern. Das darf
- * er natuerlich machen :-) */
+ /* Check that the new nickname is available. Special case:
+ * the client only changes from/to upper to lower case. */
if( strcasecmp( Client_ID( target ), Req->argv[0] ) != 0 )
{
- if( ! Client_CheckNick( target, Req->argv[0] )) return CONNECTED;
+ if( ! Client_CheckNick( target, Req->argv[0] ))
+ return CONNECTED;
}
- if(( Client_Type( target ) != CLIENT_USER ) && ( Client_Type( target ) != CLIENT_SERVER ))
+ if(( Client_Type( target ) != CLIENT_USER )
+ && ( Client_Type( target ) != CLIENT_SERVER ))
{
- /* Neuer Client */
- Log( LOG_DEBUG, "Connection %d: got valid NICK command ...", Client_Conn( Client ));
+ /* New client */
+ Log( LOG_DEBUG, "Connection %d: got valid NICK command ...",
+ Client_Conn( Client ));
- /* Client-Nick registrieren */
+ /* Register new nickname of this client */
Client_SetID( target, Req->argv[0] );
- /* schon ein USER da? Dann registrieren! */
- if( Client_Type( Client ) == CLIENT_GOTUSER ) return Hello_User( Client );
- else Client_SetType( Client, CLIENT_GOTNICK );
+ /* If we received a valid USER command already then
+ * register the new client! */
+ if( Client_Type( Client ) == CLIENT_GOTUSER )
+ return Hello_User( Client );
+ else
+ Client_SetType( Client, CLIENT_GOTNICK );
}
else
{
- /* Nick-Aenderung */
- if( Client_Conn( target ) > NONE )
- {
- /* lokaler Client */
- Log( LOG_INFO, "User \"%s\" changed nick (connection %d): \"%s\" -> \"%s\".", Client_Mask( target ), Client_Conn( target ), Client_ID( target ), Req->argv[0] );
+ /* Nickname change */
+ if (Client_Conn(target) > NONE) {
+ /* Local client */
+ Log(LOG_INFO,
+ "User \"%s\" changed nick (connection %d): \"%s\" -> \"%s\".",
+ Client_Mask(target), Client_Conn(target),
+ Client_ID(target), Req->argv[0]);
+ Conn_UpdateIdle(Client_Conn(target));
}
else
{
- /* Remote-Client */
- Log( LOG_DEBUG, "User \"%s\" changed nick: \"%s\" -> \"%s\".", Client_Mask( target ), Client_ID( target ), Req->argv[0] );
+ /* Remote client */
+ Log( LOG_DEBUG,
+ "User \"%s\" changed nick: \"%s\" -> \"%s\".",
+ Client_Mask( target ), Client_ID( target ),
+ Req->argv[0] );
}
- /* alle betroffenen User und Server ueber Nick-Aenderung informieren */
- if( Client_Type( Client ) == CLIENT_USER ) IRC_WriteStrClientPrefix( Client, Client, "NICK :%s", Req->argv[0] );
- IRC_WriteStrServersPrefix( Client, target, "NICK :%s", Req->argv[0] );
- IRC_WriteStrRelatedPrefix( target, target, FALSE, "NICK :%s", Req->argv[0] );
-
- /* neuen Client-Nick speichern */
+ /* Inform all users and servers (which have to know)
+ * of this nickname change */
+ if( Client_Type( Client ) == CLIENT_USER )
+ IRC_WriteStrClientPrefix( Client, Client,
+ "NICK :%s",
+ Req->argv[0] );
+ IRC_WriteStrServersPrefix( Client, target,
+ "NICK :%s", Req->argv[0] );
+ IRC_WriteStrRelatedPrefix( target, target, false,
+ "NICK :%s", Req->argv[0] );
+
+ /* Register old nickname for WHOWAS queries */
+ Client_RegisterWhowas( target );
+
+ /* Save new nickname */
Client_SetID( target, Req->argv[0] );
+
+ IRC_SetPenalty( target, 2 );
}
return CONNECTED;
- }
- else if( Client_Type( Client ) == CLIENT_SERVER )
- {
- /* Server fuehrt neuen Client ein */
-
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 7 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ } else if(Client_Type(Client) == CLIENT_SERVER ||
+ Client_Type(Client) == CLIENT_SERVICE) {
+ /* Server or service introduces new client */
+
+ /* Bad number of parameters? */
+ if (Req->argc != 2 && Req->argc != 7)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+
+ if (Req->argc >= 7) {
+ /* RFC 2813 compatible syntax */
+ nick = Req->argv[0];
+ hops = atoi(Req->argv[1]);
+ user = Req->argv[2];
+ hostname = Req->argv[3];
+ token = atoi(Req->argv[4]);
+ modes = Req->argv[5] + 1;
+ info = Req->argv[6];
+ } else {
+ /* RFC 1459 compatible syntax */
+ nick = Req->argv[0];
+ hops = 1;
+ user = Req->argv[0];
+ hostname = Client_ID(Client);
+ token = atoi(Req->argv[1]);
+ modes = "";
+ info = Req->argv[0];
+ }
/* Nick ueberpruefen */
- c = Client_Search( Req->argv[0] );
- if( c )
- {
+ c = Client_Search(nick);
+ if(c) {
/* Der neue Nick ist auf diesem Server bereits registriert:
* sowohl der neue, als auch der alte Client muessen nun
* disconnectiert werden. */
}
/* Server, zu dem der Client connectiert ist, suchen */
- intr_c = Client_GetFromToken( Client, atoi( Req->argv[4] ));
+ intr_c = Client_GetFromToken(Client, token);
if( ! intr_c )
{
Log( LOG_ERR, "Server %s introduces nick \"%s\" on unknown server!?", Client_ID( Client ), Req->argv[0] );
}
/* Neue Client-Struktur anlegen */
- c = Client_NewRemoteUser( intr_c, Req->argv[0], atoi( Req->argv[1] ), Req->argv[2], Req->argv[3], atoi( Req->argv[4] ), Req->argv[5] + 1, Req->argv[6], TRUE );
+ c = Client_NewRemoteUser(intr_c, nick, hops, user, hostname,
+ token, modes, info, true);
if( ! c )
{
/* Eine neue Client-Struktur konnte nicht angelegt werden.
return CONNECTED;
}
- modes = Client_Modes( c );
- if( *modes ) Log( LOG_DEBUG, "User \"%s\" (+%s) registered (via %s, on %s, %d hop%s).", Client_Mask( c ), modes, Client_ID( Client ), Client_ID( intr_c ), Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
- else Log( LOG_DEBUG, "User \"%s\" registered (via %s, on %s, %d hop%s).", Client_Mask( c ), Client_ID( Client ), Client_ID( intr_c ), Client_Hops( c ), Client_Hops( c ) > 1 ? "s": "" );
-
- /* Andere Server, ausser dem Introducer, informieren */
- IRC_WriteStrServersPrefix( Client, Client, "NICK %s %d %s %s %d %s :%s", Req->argv[0], atoi( Req->argv[1] ) + 1, Req->argv[2], Req->argv[3], Client_MyToken( intr_c ), Req->argv[5], Req->argv[6] );
+ /* RFC 2813: client is now fully registered, inform all the
+ * other servers about the new user.
+ * RFC 1459: announce the new client only after receiving the
+ * USER command, first we need more information! */
+ if (Req->argc >= 7) {
+ modes = Client_Modes(c);
+ LogDebug("User \"%s\" (+%s) registered (via %s, on %s, %d hop%s).",
+ Client_Mask(c), modes, Client_ID(Client),
+ Client_ID(intr_c), Client_Hops(c),
+ Client_Hops(c) > 1 ? "s": "");
+
+ Introduce_Client(Client, Req->argv[0],
+ atoi(Req->argv[1]) + 1, Req->argv[2],
+ Req->argv[3], intr_c, Req->argv[5], Req->argv[6]);
+ } else {
+ LogDebug("User \"%s\" is beeing registered (RFC 1459) ...",
+ Client_Mask(c));
+ Client_SetType(c, CLIENT_GOTNICK);
+ }
return CONNECTED;
}
} /* IRC_NICK */
-GLOBAL BOOLEAN IRC_USER( CLIENT *Client, REQUEST *Req )
+/**
+ * Handler for the IRC command "USER".
+ */
+GLOBAL bool
+IRC_USER(CLIENT * Client, REQUEST * Req)
{
- assert( Client != NULL );
- assert( Req != NULL );
+ CLIENT *c;
+ char modes[CLIENT_MODE_LEN + 1] = "+";
+#ifdef IDENTAUTH
+ char *ptr;
+#endif
+
+ assert(Client != NULL);
+ assert(Req != NULL);
+ if (Client_Type(Client) == CLIENT_GOTNICK ||
#ifndef STRICT_RFC
- if( Client_Type( Client ) == CLIENT_GOTNICK || Client_Type( Client ) == CLIENT_GOTPASS || Client_Type( Client ) == CLIENT_UNKNOWN )
-#else
- if( Client_Type( Client ) == CLIENT_GOTNICK || Client_Type( Client ) == CLIENT_GOTPASS )
+ Client_Type(Client) == CLIENT_UNKNOWN ||
#endif
+ Client_Type(Client) == CLIENT_GOTPASS)
{
- /* Falsche Anzahl Parameter? */
- if( Req->argc != 4 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* New connection */
+ if (Req->argc != 4)
+ return IRC_WriteStrClient(Client,
+ ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client),
+ Req->command);
+
+ /* User name */
+#ifdef IDENTAUTH
+ ptr = Client_User(Client);
+ if (!ptr || !*ptr || *ptr == '~')
+ Client_SetUser(Client, Req->argv[0], false);
+#else
+ Client_SetUser(Client, Req->argv[0], false);
+#endif
- Client_SetUser( Client, Req->argv[0], FALSE );
- Client_SetInfo( Client, Req->argv[3] );
+ /* "Real name" or user info text: Don't set it to the empty
+ * string, the original ircd can't deal with such "real names"
+ * (e. g. "USER user * * :") ... */
+ if (*Req->argv[3])
+ Client_SetInfo(Client, Req->argv[3]);
+ else
+ Client_SetInfo(Client, "-");
- Log( LOG_DEBUG, "Connection %d: got valid USER command ...", Client_Conn( Client ));
- if( Client_Type( Client ) == CLIENT_GOTNICK ) return Hello_User( Client );
- else Client_SetType( Client, CLIENT_GOTUSER );
+ LogDebug("Connection %d: got valid USER command ...",
+ Client_Conn(Client));
+ if (Client_Type(Client) == CLIENT_GOTNICK)
+ return Hello_User(Client);
+ else
+ Client_SetType(Client, CLIENT_GOTUSER);
return CONNECTED;
+
+ } else if (Client_Type(Client) == CLIENT_SERVER ||
+ Client_Type(Client) == CLIENT_SERVICE) {
+ /* Server/service updating an user */
+ if (Req->argc != 4)
+ return IRC_WriteStrClient(Client,
+ ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client),
+ Req->command);
+ c = Client_Search(Req->prefix);
+ if (!c)
+ return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
+ Client_ID(Client),
+ Req->prefix);
+
+ Client_SetUser(c, Req->argv[0], true);
+ Client_SetHostname(c, Req->argv[1]);
+ Client_SetInfo(c, Req->argv[3]);
+
+ LogDebug("Connection %d: got valid USER command for \"%s\".",
+ Client_Conn(Client), Client_Mask(c));
+
+ /* RFC 1459 style user registration? Inform other servers! */
+ if (Client_Type(c) == CLIENT_GOTNICK) {
+ strlcat(modes, Client_Modes(c), sizeof(modes));
+ Introduce_Client(Client, Client_ID(c), Client_Hops(c),
+ Client_User(c), Client_Hostname(c),
+ Client_Introducer(c), modes,
+ Client_Info(c));
+ LogDebug("User \"%s\" (%s) registered (via %s, on %s, %d hop%s).",
+ Client_Mask(c), modes, Client_ID(Client),
+ Client_ID(Client_Introducer(c)), Client_Hops(c),
+ Client_Hops(c) > 1 ? "s": "");
+ Client_SetType(c, CLIENT_USER);
+ }
+
+ return CONNECTED;
+ } else if (Client_Type(Client) == CLIENT_USER) {
+ /* Already registered connection */
+ return IRC_WriteStrClient(Client, ERR_ALREADYREGISTRED_MSG,
+ Client_ID(Client));
+ } else {
+ /* Unexpected/invalid connection state? */
+ return IRC_WriteStrClient(Client, ERR_NOTREGISTERED_MSG,
+ Client_ID(Client));
}
- else if( Client_Type( Client ) == CLIENT_USER || Client_Type( Client ) == CLIENT_SERVER || Client_Type( Client ) == CLIENT_SERVICE )
- {
- return IRC_WriteStrClient( Client, ERR_ALREADYREGISTRED_MSG, Client_ID( Client ));
- }
- else return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
} /* IRC_USER */
-GLOBAL BOOLEAN IRC_QUIT( CLIENT *Client, REQUEST *Req )
+/**
+ * Service registration.
+ * ngIRCd does not support services at the moment, so this function is a
+ * dummy that returns ERR_ERRONEUSNICKNAME on each call.
+ */
+GLOBAL bool
+IRC_SERVICE(CLIENT *Client, REQUEST *Req)
+{
+ assert(Client != NULL);
+ assert(Req != NULL);
+
+ if (Client_Type(Client) != CLIENT_GOTPASS)
+ return IRC_WriteStrClient(Client, ERR_ALREADYREGISTRED_MSG,
+ Client_ID(Client));
+
+ if (Req->argc != 6)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+
+ return IRC_WriteStrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
+ Client_ID(Client), Req->argv[0]);
+} /* IRC_SERVICE */
+
+
+GLOBAL bool
+IRC_QUIT( CLIENT *Client, REQUEST *Req )
{
CLIENT *target;
-
+ char quitmsg[LINE_LEN];
+
assert( Client != NULL );
assert( Req != NULL );
- if(( Client_Type( Client ) == CLIENT_USER ) || ( Client_Type( Client ) == CLIENT_SERVICE ))
- {
- /* User / Service */
-
- /* Falsche Anzahl Parameter? */
- if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- if( Req->argc == 0 ) Conn_Close( Client_Conn( Client ), "Got QUIT command.", NULL, TRUE );
- else Conn_Close( Client_Conn( Client ), "Got QUIT command.", Req->argv[0], TRUE );
-
- return DISCONNECTED;
- }
- else if ( Client_Type( Client ) == CLIENT_SERVER )
- {
- /* Server */
+ /* Wrong number of arguments? */
+ if( Req->argc > 1 )
+ return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Falsche Anzahl Parameter? */
- if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ if (Req->argc == 1)
+ strlcpy(quitmsg, Req->argv[0], sizeof quitmsg);
+ if ( Client_Type( Client ) == CLIENT_SERVER )
+ {
+ /* Server */
target = Client_Search( Req->prefix );
if( ! target )
{
return CONNECTED;
}
- if( Req->argc == 0 ) Client_Destroy( target, "Got QUIT command.", NULL, TRUE );
- else Client_Destroy( target, "Got QUIT command.", Req->argv[0], TRUE );
+ Client_Destroy( target, "Got QUIT command.", Req->argc == 1 ? quitmsg : NULL, true);
return CONNECTED;
}
- else return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
+ else
+ {
+ if (Req->argc == 1 && quitmsg[0] != '\"') {
+ /* " " to avoid confusion */
+ strlcpy(quitmsg, "\"", sizeof quitmsg);
+ strlcat(quitmsg, Req->argv[0], sizeof quitmsg-1);
+ strlcat(quitmsg, "\"", sizeof quitmsg );
+ }
+
+ /* User, Service, oder noch nicht registriert */
+ Conn_Close( Client_Conn( Client ), "Got QUIT command.", Req->argc == 1 ? quitmsg : NULL, true);
+
+ return DISCONNECTED;
+ }
} /* IRC_QUIT */
-GLOBAL BOOLEAN IRC_PING( CLIENT *Client, REQUEST *Req )
+GLOBAL bool
+IRC_PING(CLIENT *Client, REQUEST *Req)
{
CLIENT *target, *from;
- assert( Client != NULL );
- assert( Req != NULL );
-
- if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
+ assert(Client != NULL);
+ assert(Req != NULL);
- /* Falsche Anzahl Parameter? */
- if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NOORIGIN_MSG, Client_ID( Client ));
+ /* Wrong number of arguments? */
+ if (Req->argc < 1)
+ return IRC_WriteStrClient(Client, ERR_NOORIGIN_MSG,
+ Client_ID(Client));
#ifdef STRICT_RFC
- if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* Don't ignore additional arguments when in "strict" mode */
+ if (Req->argc > 2)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
#endif
- if( Req->argc > 1 )
- {
- /* es wurde ein Ziel-Client angegeben */
- target = Client_Search( Req->argv[1] );
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[1] );
- if( target != Client_ThisServer( ))
- {
- /* ok, forwarden */
- if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
- else from = Client;
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->prefix );
- return IRC_WriteStrClientPrefix( target, from, "PING %s :%s", Client_ID( from ), Req->argv[1] );
+ if (Req->argc > 1) {
+ /* A target has been specified ... */
+ target = Client_Search(Req->argv[1]);
+
+ if (!target || Client_Type(target) != CLIENT_SERVER)
+ return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client), Req->argv[1]);
+
+ if (target != Client_ThisServer()) {
+ /* Ok, we have to forward the PING */
+ if (Client_Type(Client) == CLIENT_SERVER)
+ from = Client_Search(Req->prefix);
+ else
+ from = Client;
+ if (!from)
+ return IRC_WriteStrClient(Client,
+ ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client), Req->prefix);
+
+ return IRC_WriteStrClientPrefix(target, from,
+ "PING %s :%s", Req->argv[0],
+ Req->argv[1] );
}
}
- Log( LOG_DEBUG, "Connection %d: got PING, sending PONG ...", Client_Conn( Client ));
- return IRC_WriteStrClient( Client, "PONG %s :%s", Client_ID( Client_ThisServer( )), Client_ID( Client ));
+ if (Client_Type(Client) == CLIENT_SERVER) {
+ if (Req->prefix)
+ from = Client_Search(Req->prefix);
+ else
+ from = Client;
+ } else
+ from = Client_ThisServer();
+ if (!from)
+ return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client), Req->prefix);
+
+ Log(LOG_DEBUG, "Connection %d: got PING, sending PONG ...",
+ Client_Conn(Client));
+
+#ifdef STRICT_RFC
+ return IRC_WriteStrClient(Client, "PONG %s :%s",
+ Client_ID(from), Client_ID(Client));
+#else
+ /* Some clients depend on the argument being returned in the PONG
+ * reply (not mentioned in any RFC, though) */
+ return IRC_WriteStrClient(Client, "PONG %s :%s",
+ Client_ID(from), Req->argv[0]);
+#endif
} /* IRC_PING */
-GLOBAL BOOLEAN IRC_PONG( CLIENT *Client, REQUEST *Req )
+GLOBAL bool
+IRC_PONG(CLIENT *Client, REQUEST *Req)
{
CLIENT *target, *from;
-
- assert( Client != NULL );
- assert( Req != NULL );
-
- if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOTREGISTERED_MSG, Client_ID( Client ));
-
- /* Falsche Anzahl Parameter? */
- if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NOORIGIN_MSG, Client_ID( Client ));
- if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- /* forwarden? */
- if( Req->argc == 2 )
- {
- target = Client_Search( Req->argv[1] );
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[1] );
- if( target != Client_ThisServer( ))
- {
- /* ok, forwarden */
- if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
- else from = Client;
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->prefix );
- return IRC_WriteStrClientPrefix( target, from, "PONG %s :%s", Client_ID( from ), Req->argv[1] );
+ char *s;
+
+ assert(Client != NULL);
+ assert(Req != NULL);
+
+ /* Wrong number of arguments? */
+ if (Req->argc < 1)
+ return IRC_WriteStrClient(Client, ERR_NOORIGIN_MSG,
+ Client_ID(Client));
+ if (Req->argc > 2)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+
+ /* Forward? */
+ if (Req->argc == 2 && Client_Type(Client) == CLIENT_SERVER) {
+ target = Client_Search(Req->argv[0]);
+ if (!target)
+ return IRC_WriteStrClient(Client, ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client), Req->argv[0]);
+
+ from = Client_Search(Req->prefix);
+
+ if (target != Client_ThisServer() && target != from) {
+ /* Ok, we have to forward the message. */
+ if (!from)
+ return IRC_WriteStrClient(Client,
+ ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client), Req->prefix);
+
+ if (Client_Type(Client_NextHop(target)) != CLIENT_SERVER)
+ s = Client_ID(from);
+ else
+ s = Req->argv[0];
+ return IRC_WriteStrClientPrefix(target, from,
+ "PONG %s :%s", s, Req->argv[1]);
}
}
- /* Der Connection-Timestamp wurde schon beim Lesen aus dem Socket
- * aktualisiert, daher muss das hier nicht mehr gemacht werden. */
+ /* The connection timestamp has already been updated when the data has
+ * been read from so socket, so we don't need to update it here. */
- if( Client_Conn( Client ) > NONE ) Log( LOG_DEBUG, "Connection %d: received PONG. Lag: %ld seconds.", Client_Conn( Client ), time( NULL ) - Conn_LastPing( Client_Conn( Client )));
- else Log( LOG_DEBUG, "Connection %d: received PONG.", Client_Conn( Client ));
+ if (Client_Conn(Client) > NONE)
+ Log(LOG_DEBUG,
+ "Connection %d: received PONG. Lag: %ld seconds.",
+ Client_Conn(Client),
+ time(NULL) - Conn_LastPing(Client_Conn(Client)));
+ else
+ Log(LOG_DEBUG,
+ "Connection %d: received PONG.", Client_Conn(Client));
return CONNECTED;
} /* IRC_PONG */
-LOCAL BOOLEAN Hello_User( CLIENT *Client )
+static bool
+Hello_User(CLIENT * Client)
{
- assert( Client != NULL );
+ char modes[CLIENT_MODE_LEN + 1] = "+";
- /* Passwort ueberpruefen */
- if( strcmp( Client_Password( Client ), Conf_ServerPwd ) != 0 )
- {
- /* Falsches Passwort */
- Log( LOG_ERR, "User \"%s\" rejected (connection %d): Bad password!", Client_Mask( Client ), Client_Conn( Client ));
- Conn_Close( Client_Conn( Client ), NULL, "Bad password", TRUE );
+ assert(Client != NULL);
+
+ /* Check password ... */
+ if (strcmp(Client_Password(Client), Conf_ServerPwd) != 0) {
+ /* Bad password! */
+ Log(LOG_ERR,
+ "User \"%s\" rejected (connection %d): Bad password!",
+ Client_Mask(Client), Client_Conn(Client));
+ Conn_Close(Client_Conn(Client), NULL, "Bad password", true);
return DISCONNECTED;
}
- Log( LOG_NOTICE, "User \"%s\" registered (connection %d).", Client_Mask( Client ), Client_Conn( Client ));
-
- /* Andere Server informieren */
- IRC_WriteStrServers( NULL, "NICK %s 1 %s %s 1 +%s :%s", Client_ID( Client ), Client_User( Client ), Client_Hostname( Client ), Client_Modes( Client ), Client_Info( Client ));
+ Log(LOG_NOTICE, "User \"%s\" registered (connection %d).",
+ Client_Mask(Client), Client_Conn(Client));
+
+ /* Inform other servers */
+ strlcat(modes, Client_Modes(Client), sizeof(modes));
+ Introduce_Client(NULL, Client_ID(Client), 1, Client_User(Client),
+ Client_Hostname(Client), NULL, modes,
+ Client_Info(Client));
+
+ if (!IRC_WriteStrClient
+ (Client, RPL_WELCOME_MSG, Client_ID(Client), Client_Mask(Client)))
+ return false;
+ if (!IRC_WriteStrClient
+ (Client, RPL_YOURHOST_MSG, Client_ID(Client),
+ Client_ID(Client_ThisServer()), PACKAGE_VERSION, TARGET_CPU,
+ TARGET_VENDOR, TARGET_OS))
+ return false;
+ if (!IRC_WriteStrClient
+ (Client, RPL_CREATED_MSG, Client_ID(Client), NGIRCd_StartStr))
+ return false;
+ if (!IRC_WriteStrClient
+ (Client, RPL_MYINFO_MSG, Client_ID(Client),
+ Client_ID(Client_ThisServer()), PACKAGE_VERSION, USERMODES,
+ CHANMODES))
+ return false;
+
+ /* Features supported by this server (005 numeric, ISUPPORT),
+ * see <http://www.irc.org/tech_docs/005.html> for details. */
+ if (!IRC_Send_ISUPPORT(Client))
+ return DISCONNECTED;
- if( ! IRC_WriteStrClient( Client, RPL_WELCOME_MSG, Client_ID( Client ), Client_Mask( Client ))) return FALSE;
- if( ! IRC_WriteStrClient( Client, RPL_YOURHOST_MSG, Client_ID( Client ), Client_ID( Client_ThisServer( )))) return FALSE;
- if( ! IRC_WriteStrClient( Client, RPL_CREATED_MSG, Client_ID( Client ), NGIRCd_StartStr )) return FALSE;
- if( ! IRC_WriteStrClient( Client, RPL_MYINFO_MSG, Client_ID( Client ), Client_ID( Client_ThisServer( )))) return FALSE;
+ Client_SetType(Client, CLIENT_USER);
- Client_SetType( Client, CLIENT_USER );
+ if (!IRC_Send_LUSERS(Client))
+ return DISCONNECTED;
+ if (!IRC_Show_MOTD(Client))
+ return DISCONNECTED;
- if( ! IRC_Send_LUSERS( Client )) return DISCONNECTED;
- if( ! IRC_Show_MOTD( Client )) return DISCONNECTED;
+ /* Suspend the client for a second ... */
+ IRC_SetPenalty(Client, 1);
return CONNECTED;
} /* Hello_User */
-LOCAL VOID Kill_Nick( CHAR *Nick, CHAR *Reason )
+static void
+Kill_Nick( char *Nick, char *Reason )
{
- CLIENT *c;
+ REQUEST r;
assert( Nick != NULL );
assert( Reason != NULL );
+ r.prefix = (char *)Client_ThisServer( );
+ r.argv[0] = Nick;
+ r.argv[1] = Reason;
+ r.argc = 2;
+
Log( LOG_ERR, "User(s) with nick \"%s\" will be disconnected: %s", Nick, Reason );
+ IRC_KILL( Client_ThisServer( ), &r );
+} /* Kill_Nick */
- /* andere Server benachrichtigen */
- IRC_WriteStrServers( NULL, "KILL %s :%s", Nick, Reason );
- /* Ggf. einen eigenen Client toeten */
- c = Client_Search( Nick );
- if( c && ( Client_Conn( c ) != NONE )) Conn_Close( Client_Conn( c ), NULL, Reason, TRUE );
-} /* Kill_Nick */
+static void
+Introduce_Client(CLIENT *From, char *Nick, const int HopCount, char *User,
+ char *Host, CLIENT *Server, char *Mode, char *Name)
+{
+ INTRO_INFO i;
+
+ i.nick = Nick;
+ i.hopcount = HopCount;
+ i.user = User ? User : "-";
+ i.host = Host ? Host : "-";
+ i.server = Server ? Server : Client_ThisServer();
+ i.mode = Mode ? Mode : "+";
+ i.name = Name ? Name : "";
+
+ IRC_WriteStrServersPrefixFlag_CB(From,
+ From != NULL ? From : Client_ThisServer(),
+ '\0', cb_introduceClient, (void *)(&i));
+} /* Introduce_Client */
+
+
+static void
+cb_introduceClient(CLIENT *Client, CLIENT *Prefix, void *data)
+{
+ INTRO_INFO *i = (INTRO_INFO *)data;
+ CONN_ID conn;
+
+ conn = Client_Conn(Client);
+ if (Conn_Options(conn) & CONN_RFC1459) {
+ /* RFC 1459 mode: separate NICK and USER commands */
+ Conn_WriteStr(conn, "NICK %s :%d", i->nick, i->hopcount);
+ Conn_WriteStr(conn, ":%s USER %s %s %s :%s",
+ i->nick, i->user, i->host,
+ Client_ID(i->server), i->name);
+ } else {
+ /* RFC 2813 mode: one combined NICK command */
+ IRC_WriteStrClientPrefix(Client, Prefix,
+ "NICK %s %d %s %s %d %s :%s",
+ i->nick, i->hopcount, i->user, i->host,
+ Client_MyToken(i->server), i->mode,
+ i->name);
+ }
+} /* cb_introduceClient */
/* -eof- */
projects / ngircd-alex.git / blobdiff