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Reformatted and documented code of the first part of the IRC_NICK()

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function; and register WHOWAS entries on nickname changes, too.
This commit is contained in:
Alexander Barton 2005-05-17 23:24:43 +00:00
parent 1aeaf64c66
commit 95f8b963a6
1 changed files with 87 additions and 37 deletions
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124
src/ngircd/irc-login.c
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@ -14,7 +14,7 @@
#include "portab.h" #include "portab.h"
static char UNUSED id[] = "$Id: irc-login.c,v 1.42 2005/03/21 22:22:09 alex Exp $"; static char UNUSED id[] = "$Id: irc-login.c,v 1.43 2005/05/17 23:24:43 alex Exp $";
#include "imp.h" #include "imp.h"
#include <assert.h> #include <assert.h>
@ -143,6 +143,12 @@ IRC_PASS( CLIENT *Client, REQUEST *Req )
} /* IRC_PASS */ } /* IRC_PASS */
/**
* 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 GLOBAL bool
IRC_NICK( CLIENT *Client, REQUEST *Req ) IRC_NICK( CLIENT *Client, REQUEST *Req )
{ {
@ -152,79 +158,123 @@ IRC_NICK( CLIENT *Client, REQUEST *Req )
assert( Client != NULL ); assert( Client != NULL );
assert( Req != NULL ); assert( Req != NULL );
/* Zumindest BitchX sendet NICK-USER in der falschen Reihenfolge. */
#ifndef STRICT_RFC #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 #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 #endif
{ {
/* User-Registrierung bzw. Nick-Aenderung */ /* User registration or change of nickname */
/* Falsche Anzahl Parameter? */ /* Wrong number of arguments? */
if( Req->argc != 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); 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 ) if( Client_Type( Client ) == CLIENT_SERVER )
{ {
target = Client_Search( Req->prefix ); 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 else
{ {
/* Ist der Client "restricted"? */ /* Is this a restricted client? */
if( Client_HasMode( Client, 'r' )) return IRC_WriteStrClient( Client, ERR_RESTRICTED_MSG, Client_ID( Client )); if( Client_HasMode( Client, 'r' ))
return IRC_WriteStrClient( Client,
ERR_RESTRICTED_MSG,
Client_ID( Client ));
target = Client; target = Client;
} }
#ifndef STRICT_RFC #ifndef STRICT_RFC
/* Wenn der Client zu seinem eigenen Nick wechseln will, so machen /* If the clients tries to change to its own nickname we won't
* wir nichts. So macht es das Original und mind. Snak hat probleme, * do anything. This is how the original ircd behaves and some
* wenn wir es nicht so machen. Ob es so okay ist? Hm ... */ * clients (for example Snak) expect it to be like this.
if( strcmp( Client_ID( target ), Req->argv[0] ) == 0 ) return CONNECTED; * But I doubt that this is "really the right thing" ... */
if( strcmp( Client_ID( target ), Req->argv[0] ) == 0 )
return CONNECTED;
#endif #endif
/* pruefen, ob Nick bereits vergeben. Speziallfall: der Client /* Check that the new nickname is available. Special case:
* will nur die Gross- und Kleinschreibung aendern. Das darf * the client only changes from/to upper to lower case. */
* er natuerlich machen :-) */
if( strcasecmp( Client_ID( target ), Req->argv[0] ) != 0 ) 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 */ /* New client */
Log( LOG_DEBUG, "Connection %d: got valid NICK command ...", Client_Conn( 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] ); Client_SetID( target, Req->argv[0] );
/* schon ein USER da? Dann registrieren! */ /* If we received a valid USER command already then
if( Client_Type( Client ) == CLIENT_GOTUSER ) return Hello_User( Client ); * register the new client! */
else Client_SetType( Client, CLIENT_GOTNICK ); if( Client_Type( Client ) == CLIENT_GOTUSER )
return Hello_User( Client );
else
Client_SetType( Client, CLIENT_GOTNICK );
} }
else else
{ {
/* Nick-Aenderung */ /* Nickname change */
if( Client_Conn( target ) > NONE ) if( Client_Conn( target ) > NONE )
{ {
/* lokaler Client */ /* 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] ); Log( LOG_INFO,
"User \"%s\" changed nick (connection %d): \"%s\" -> \"%s\".",
Client_Mask( target ), Client_Conn( target ),
Client_ID( target ), Req->argv[0] );
} }
else else
{ {
/* Remote-Client */ /* Remote client */
Log( LOG_DEBUG, "User \"%s\" changed nick: \"%s\" -> \"%s\".", Client_Mask( target ), Client_ID( target ), Req->argv[0] ); 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 */ /* Inform all users and servers (which have to know)
if( Client_Type( Client ) == CLIENT_USER ) IRC_WriteStrClientPrefix( Client, Client, "NICK :%s", Req->argv[0] ); * of this nickname change */
IRC_WriteStrServersPrefix( Client, target, "NICK :%s", Req->argv[0] ); if( Client_Type( Client ) == CLIENT_USER )
IRC_WriteStrRelatedPrefix( target, target, false, "NICK :%s", Req->argv[0] ); 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 */ /* Register old nickname for WHOWAS queries */
Client_RegisterWhowas( target );
/* Save new nickname */
Client_SetID( target, Req->argv[0] ); Client_SetID( target, Req->argv[0] );
IRC_SetPenalty( target, 2 ); IRC_SetPenalty( target, 2 );
} }
@ -232,7 +282,7 @@ IRC_NICK( CLIENT *Client, REQUEST *Req )
} }
else if( Client_Type( Client ) == CLIENT_SERVER ) else if( Client_Type( Client ) == CLIENT_SERVER )
{ {
/* Server fuehrt neuen Client ein */ /* Server introduces new client */
/* Falsche Anzahl Parameter? */ /* Falsche Anzahl Parameter? */
if( Req->argc != 7 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); if( Req->argc != 7 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );