X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Firc-info.c;h=cdd03bb1d3a24290bca78f8ec8f864f925185134;hp=cf283b51d90e8a50280dc547099b6873d37884c9;hb=43509fd22c30e0ce1f1eb02fd584a0693177d880;hpb=8adff5922376676c2eeb49de1cbab86cc345b887 diff --git a/src/ngircd/irc-info.c b/src/ngircd/irc-info.c index cf283b51..cdd03bb1 100644 --- a/src/ngircd/irc-info.c +++ b/src/ngircd/irc-info.c @@ -1,39 +1,40 @@ /* * ngIRCd -- The Next Generation IRC Daemon - * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de) + * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors. * * 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. - * - * IRC info commands */ - #include "portab.h" -static char UNUSED id[] = "$Id: irc-info.c,v 1.28 2005/03/19 18:43:48 fw Exp $"; +/** + * @file + * IRC info commands + */ #include "imp.h" #include #include #include +#include #include #include #include "ngircd.h" -#include "cvs-version.h" #include "conn-func.h" #include "conn-zip.h" -#include "client.h" #include "channel.h" -#include "resolve.h" +#include "class.h" #include "conf.h" #include "defines.h" +#include "lists.h" #include "log.h" #include "messages.h" +#include "match.h" #include "tool.h" #include "parse.h" #include "irc-write.h" @@ -50,24 +51,23 @@ IRC_ADMIN(CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - /* Ziel suchen */ + /* find target ... */ if( Req->argc == 1 ) target = Client_Search( Req->argv[0] ); else target = Client_ThisServer( ); - /* Prefix ermitteln */ + /* find Prefix */ if( Client_Type( Client ) == CLIENT_SERVER ) prefix = Client_Search( Req->prefix ); else prefix = Client; if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix ); - /* An anderen Server weiterleiten? */ + /* forwad message to another server? */ if( target != Client_ThisServer( )) { if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( prefix, ERR_NOSUCHSERVER_MSG, Client_ID( prefix ), Req->argv[0] ); - /* forwarden */ + /* forward */ IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] ); return CONNECTED; } @@ -83,6 +83,77 @@ IRC_ADMIN(CLIENT *Client, REQUEST *Req ) } /* IRC_ADMIN */ +/** + * Handler for the IRC command "INFO". + * See RFC 2812 section 3.4.10. + */ +GLOBAL bool +IRC_INFO(CLIENT * Client, REQUEST * Req) +{ + CLIENT *target, *prefix; + char msg[510]; + + assert(Client != NULL); + assert(Req != NULL); + + /* Wrong number of parameters? */ + if (Req->argc > 1) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + + /* Determine prefix */ + if (Client_Type(Client) == CLIENT_SERVER) + prefix = Client_Search(Req->prefix); + else + prefix = Client; + if (!prefix) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->prefix); + + /* Look for a target */ + if (Req->argc > 0) + target = Client_Search(Req->argv[0]); + else + target = Client_ThisServer(); + + /* Make sure that the target is a server */ + if (target && Client_Type(target) != CLIENT_SERVER) + target = Client_Introducer(target); + + if (!target) + return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG, + Client_ID(prefix), Req->argv[0]); + + /* Pass on to another server? */ + if (target != Client_ThisServer()) { + IRC_WriteStrClientPrefix(target, prefix, "INFO %s", + Req->argv[0]); + return CONNECTED; + } + + if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), + NGIRCd_Version)) + return DISCONNECTED; + +#if defined(__DATE__) && defined(__TIME__) + snprintf(msg, sizeof(msg), "Birth Date: %s at %s", __DATE__, __TIME__); + if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg)) + return DISCONNECTED; +#endif + + strlcpy(msg, "On-line since ", sizeof(msg)); + strlcat(msg, NGIRCd_StartStr, sizeof(msg)); + if (!IRC_WriteStrClient(Client, RPL_INFO_MSG, Client_ID(prefix), msg)) + return DISCONNECTED; + + if (!IRC_WriteStrClient(Client, RPL_ENDOFINFO_MSG, Client_ID(prefix))) + return DISCONNECTED; + + IRC_SetPenalty(Client, 2); + return CONNECTED; +} /* IRC_INFO */ + + GLOBAL bool IRC_ISON( CLIENT *Client, REQUEST *Req ) { @@ -97,7 +168,7 @@ IRC_ISON( CLIENT *Client, REQUEST *Req ) /* Falsche Anzahl Parameter? */ if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - strcpy( rpl, RPL_ISON_MSG ); + strlcpy( rpl, RPL_ISON_MSG, sizeof rpl ); for( i = 0; i < Req->argc; i++ ) { ptr = strtok( Req->argv[i], " " ); @@ -129,7 +200,6 @@ IRC_LINKS( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); /* Server-Mask ermitteln */ @@ -177,7 +247,6 @@ IRC_LUSERS( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); /* Absender ermitteln */ @@ -205,6 +274,44 @@ IRC_LUSERS( CLIENT *Client, REQUEST *Req ) } /* IRC_LUSERS */ +/** + * Handler for the IRC command "SERVLIST". + * List registered services, see RFC 2811, section 3.5.1: the syntax is + * "SERVLIST [ []]". + */ +GLOBAL bool +IRC_SERVLIST(CLIENT *Client, REQUEST *Req) +{ + CLIENT *c; + + assert(Client != NULL); + assert(Req != NULL); + + if (Req->argc > 2) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + + if (Req->argc < 2 || strcmp(Req->argv[1], "0") == 0) { + for (c = Client_First(); c!= NULL; c = Client_Next(c)) { + if (Client_Type(c) != CLIENT_SERVICE) + continue; + if (Req->argc > 0 && !MatchCaseInsensitive(Req->argv[0], + Client_ID(c))) + continue; + if (!IRC_WriteStrClient(Client, RPL_SERVLIST_MSG, + Client_ID(Client), Client_Mask(c), + Client_Mask(Client_Introducer(c)), "*", + 0, Client_Hops(c), Client_Info(c))) + return DISCONNECTED; + } + } + + return IRC_WriteStrClient(Client, RPL_SERVLISTEND_MSG, Client_ID(Client), + Req->argc > 0 ? Req->argv[0] : "*", + Req->argc > 1 ? Req->argv[1] : "0"); +} /* IRC_SERVLIST */ + + GLOBAL bool IRC_MOTD( CLIENT *Client, REQUEST *Req ) { @@ -213,7 +320,6 @@ IRC_MOTD( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); /* From aus Prefix ermitteln */ @@ -223,7 +329,7 @@ IRC_MOTD( CLIENT *Client, REQUEST *Req ) if( Req->argc == 1 ) { - /* an anderen Server forwarden */ + /* forward? */ target = Client_Search( Req->argv[0] ); if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] ); @@ -249,23 +355,21 @@ IRC_NAMES( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - /* From aus Prefix ermitteln */ + /* use prefix to determine "From" */ if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix ); else from = Client; if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix ); if( Req->argc == 2 ) { - /* an anderen Server forwarden */ + /* forward to another server? */ target = Client_Search( Req->argv[1] ); if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] ); - if( target != Client_ThisServer( )) - { - /* Ok, anderer Server ist das Ziel: forwarden */ + if( target != Client_ThisServer( )) { + /* target is another server, forward */ return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] ); } } @@ -279,53 +383,48 @@ IRC_NAMES( CLIENT *Client, REQUEST *Req ) chan = Channel_Search( ptr ); if( chan ) { - /* Namen ausgeben */ + /* print name */ if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED; } if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED; - /* naechsten Namen ermitteln */ + /* get next channel name */ ptr = strtok( NULL, "," ); } return CONNECTED; } - /* alle Channels durchgehen */ chan = Channel_First( ); while( chan ) { - /* Namen ausgeben */ if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED; - /* naechster Channel */ chan = Channel_Next( chan ); } - /* Nun noch alle Clients ausgeben, die in keinem Channel sind */ + /* Now print all clients which are not in any channel */ c = Client_First( ); snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" ); while( c ) { if(( Client_Type( c ) == CLIENT_USER ) && ( Channel_FirstChannelOf( c ) == NULL ) && ( ! strchr( Client_Modes( c ), 'i' ))) { - /* Okay, das ist ein User: anhaengen */ + /* its a user, concatenate ... */ if( rpl[strlen( rpl ) - 1] != ':' ) strlcat( rpl, " ", sizeof( rpl )); strlcat( rpl, Client_ID( c ), sizeof( rpl )); if( strlen( rpl ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 )) { - /* Zeile wird zu lang: senden! */ + /* Line is gwoing too long, send now */ if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED; snprintf( rpl, sizeof( rpl ), RPL_NAMREPLY_MSG, Client_ID( from ), "*", "*" ); } } - /* naechster Client */ c = Client_Next( c ); } if( rpl[strlen( rpl ) - 1] != ':') { - /* es wurden User gefunden */ if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED; } @@ -334,6 +433,44 @@ IRC_NAMES( CLIENT *Client, REQUEST *Req ) } /* IRC_NAMES */ +static unsigned int +t_diff(time_t *t, const time_t d) +{ + time_t diff, remain; + + diff = *t / d; + remain = diff * d; + *t -= remain; + + return (unsigned int)diff; +} + + +static unsigned int +uptime_days(time_t *now) +{ + return t_diff(now, 60 * 60 * 24); +} + + +static unsigned int +uptime_hrs(time_t *now) +{ + return t_diff(now, 60 * 60); +} + + +static unsigned int +uptime_mins(time_t *now) +{ + return t_diff(now, 60); +} + + +/** + * Handler for the IRC command "STATS". + * See RFC 2812 section 3.4.4. + */ GLOBAL bool IRC_STATS( CLIENT *Client, REQUEST *Req ) { @@ -341,78 +478,150 @@ IRC_STATS( CLIENT *Client, REQUEST *Req ) CONN_ID con; char query; COMMAND *cmd; - - assert( Client != NULL ); - assert( Req != NULL ); - - /* Falsche Anzahl Parameter? */ - if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - - /* From aus Prefix ermitteln */ - if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix ); - else from = Client; - if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix ); - - if( Req->argc == 2 ) - { - /* an anderen Server forwarden */ - target = Client_Search( Req->argv[1] ); - if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[1] ); - - if( target != Client_ThisServer( )) - { - /* Ok, anderer Server ist das Ziel: forwarden */ - return IRC_WriteStrClientPrefix( target, from, "STATS %s %s", Req->argv[0], Req->argv[1] ); + time_t time_now; + unsigned int days, hrs, mins; + struct list_head *list; + struct list_elem *list_item; + + assert(Client != NULL); + assert(Req != NULL); + + if (Req->argc > 2) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + + /* use prefix to determine "From" */ + if (Client_Type(Client) == CLIENT_SERVER) + from = Client_Search(Req->prefix); + else + from = Client; + + if (!from) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->prefix); + + if (Req->argc == 2) { + /* forward to another server? */ + target = Client_Search(Req->argv[1]); + if ((!target) || (Client_Type(target) != CLIENT_SERVER)) + return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG, + Client_ID(from), Req->argv[1]); + + if (target != Client_ThisServer()) { + /* forward to another server */ + return IRC_WriteStrClientPrefix(target, from, + "STATS %s %s", Req->argv[0], Req->argv[1]); } } - if( Req->argc > 0 ) query = Req->argv[0][0] ? Req->argv[0][0] : '*'; - else query = '*'; - - switch ( query ) - { - case 'l': /* Links */ - case 'L': - con = Conn_First( ); - while( con != NONE ) - { - cl = Client_GetFromConn( con ); - if( cl && (( Client_Type( cl ) == CLIENT_SERVER ) || ( cl == Client ))) - { - /* Server link or our own connection */ -#ifdef ZLIB - if( Conn_Options( con ) & CONN_ZIP ) - { - if( ! IRC_WriteStrClient( from, RPL_STATSLINKINFOZIP_MSG, Client_ID( from ), Client_Mask( cl ), Conn_SendQ( con ), Conn_SendMsg( con ), Zip_SendBytes( con ), Conn_SendBytes( con ), Conn_RecvMsg( con ), Zip_RecvBytes( con ), Conn_RecvBytes( con ), (long)( time( NULL ) - Conn_StartTime( con )))) return DISCONNECTED; - } - else -#endif - { - if( ! IRC_WriteStrClient( from, RPL_STATSLINKINFO_MSG, Client_ID( from ), Client_Mask( cl ), Conn_SendQ( con ), Conn_SendMsg( con ), Conn_SendBytes( con ), Conn_RecvMsg( con ), Conn_RecvBytes( con ), (long)( time( NULL ) - Conn_StartTime( con )))) return DISCONNECTED; - } - } - con = Conn_Next( con ); + if (Req->argc > 0) + query = Req->argv[0][0] ? Req->argv[0][0] : '*'; + else + query = '*'; + + switch (query) { + case 'g': /* Network-wide bans ("G-Lines") */ + case 'G': + case 'k': /* Server-local bans ("K-Lines") */ + case 'K': + if (!Client_HasMode(from, 'o')) + return IRC_WriteStrClient(from, ERR_NOPRIVILEGES_MSG, + Client_ID(from)); + if (query == 'g' || query == 'G') + list = Class_GetList(CLASS_GLINE); + else + list = Class_GetList(CLASS_KLINE); + list_item = Lists_GetFirst(list); + while (list_item) { + if (!IRC_WriteStrClient(from, RPL_STATSXLINE_MSG, + Client_ID(from), query, + Lists_GetMask(list_item), + Lists_GetValidity(list_item), + Lists_GetReason(list_item))) + return DISCONNECTED; + list_item = Lists_GetNext(list_item); } - break; - case 'm': /* IRC-Befehle */ - case 'M': - cmd = Parse_GetCommandStruct( ); - while( cmd->name ) - { - if( cmd->lcount > 0 || cmd->rcount > 0 ) - { - if( ! IRC_WriteStrClient( from, RPL_STATSCOMMANDS_MSG, Client_ID( from ), cmd->name, cmd->lcount, cmd->bytes, cmd->rcount )) return DISCONNECTED; + break; + case 'l': /* Link status (servers and own link) */ + case 'L': + time_now = time(NULL); + for (con = Conn_First(); con != NONE; con = Conn_Next(con)) { + cl = Conn_GetClient(con); + if (!cl) + continue; + if ((Client_Type(cl) == CLIENT_SERVER) + || (cl == Client)) { + /* Server link or our own connection */ +#ifdef ZLIB + if (Conn_Options(con) & CONN_ZIP) { + if (!IRC_WriteStrClient + (from, RPL_STATSLINKINFOZIP_MSG, + Client_ID(from), Client_Mask(cl), + Conn_SendQ(con), Conn_SendMsg(con), + Zip_SendBytes(con), + Conn_SendBytes(con), + Conn_RecvMsg(con), + Zip_RecvBytes(con), + Conn_RecvBytes(con), + (long)(time_now - Conn_StartTime(con)))) + return DISCONNECTED; + continue; } - cmd++; +#endif + if (!IRC_WriteStrClient + (from, RPL_STATSLINKINFO_MSG, + Client_ID(from), Client_Mask(cl), + Conn_SendQ(con), Conn_SendMsg(con), + Conn_SendBytes(con), Conn_RecvMsg(con), + Conn_RecvBytes(con), + (long)(time_now - Conn_StartTime(con)))) + return DISCONNECTED; } - break; + } + break; + case 'm': /* IRC command status (usage count) */ + case 'M': + cmd = Parse_GetCommandStruct(); + for (; cmd->name; cmd++) { + if (cmd->lcount == 0 && cmd->rcount == 0) + continue; + if (!IRC_WriteStrClient + (from, RPL_STATSCOMMANDS_MSG, Client_ID(from), + cmd->name, cmd->lcount, cmd->bytes, cmd->rcount)) + return DISCONNECTED; + } + break; + case 'u': /* Server uptime */ + case 'U': + time_now = time(NULL) - NGIRCd_Start; + days = uptime_days(&time_now); + hrs = uptime_hrs(&time_now); + mins = uptime_mins(&time_now); + if (!IRC_WriteStrClient(from, RPL_STATSUPTIME, Client_ID(from), + days, hrs, mins, (unsigned int)time_now)) + return DISCONNECTED; + break; } - IRC_SetPenalty( from, 2 ); - return IRC_WriteStrClient( from, RPL_ENDOFSTATS_MSG, Client_ID( from ), query ); + IRC_SetPenalty(from, 2); + return IRC_WriteStrClient(from, RPL_ENDOFSTATS_MSG, + Client_ID(from), query); } /* IRC_STATS */ +/** + * Handler for the IRC command "SUMMON". + * See RFC 2812 section 4.5. ngIRCd doesn't implement this functionality and + * therefore answers with ERR_SUMMONDISABLED. + */ +GLOBAL bool +IRC_SUMMON(CLIENT * Client, REQUEST * Req) +{ + return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG, + Client_ID(Client), Req->command); +} /* IRC_SUMMON */ + + GLOBAL bool IRC_TIME( CLIENT *Client, REQUEST *Req ) { @@ -423,23 +632,19 @@ IRC_TIME( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - /* From aus Prefix ermitteln */ if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix ); else from = Client; if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix ); if( Req->argc == 1 ) { - /* an anderen Server forwarden */ target = Client_Search( Req->argv[0] ); if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[0] ); if( target != Client_ThisServer( )) { - /* Ok, anderer Server ist das Ziel: forwarden */ return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] ); } } @@ -450,58 +655,74 @@ IRC_TIME( CLIENT *Client, REQUEST *Req ) } /* IRC_TIME */ +/** + * Handler for the IRC command "USERHOST". + * See RFC 2812 section 4.8. + */ GLOBAL bool -IRC_USERHOST( CLIENT *Client, REQUEST *Req ) +IRC_USERHOST(CLIENT *Client, REQUEST *Req) { char rpl[COMMAND_LEN]; CLIENT *c; int max, i; - assert( Client != NULL ); - assert( Req != NULL ); - - /* Falsche Anzahl Parameter? */ - if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - - if( Req->argc > 5 ) max = 5; - else max = Req->argc; - - strcpy( rpl, RPL_USERHOST_MSG ); - for( i = 0; i < max; i++ ) - { - c = Client_Search( Req->argv[i] ); - if( c && ( Client_Type( c ) == CLIENT_USER )) - { - /* Dieser Nick ist "online" */ - strlcat( rpl, Client_ID( c ), sizeof( rpl )); - if( Client_HasMode( c, 'o' )) strlcat( rpl, "*", sizeof( rpl )); - strlcat( rpl, "=", sizeof( rpl )); - if( Client_HasMode( c, 'a' )) strlcat( rpl, "-", sizeof( rpl )); - else strlcat( rpl, "+", sizeof( rpl )); - strlcat( rpl, Client_User( c ), sizeof( rpl )); - strlcat( rpl, "@", sizeof( rpl )); - strlcat( rpl, Client_Hostname( c ), sizeof( rpl )); - strlcat( rpl, " ", sizeof( rpl )); + assert(Client != NULL); + assert(Req != NULL); + + if ((Req->argc < 1)) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + + if (Req->argc > 5) + max = 5; + else + max = Req->argc; + + strlcpy(rpl, RPL_USERHOST_MSG, sizeof rpl); + for (i = 0; i < max; i++) { + c = Client_Search(Req->argv[i]); + if (c && (Client_Type(c) == CLIENT_USER)) { + /* This Nick is "online" */ + strlcat(rpl, Client_ID(c), sizeof(rpl)); + if (Client_HasMode(c, 'o')) + strlcat(rpl, "*", sizeof(rpl)); + strlcat(rpl, "=", sizeof(rpl)); + if (Client_HasMode(c, 'a')) + strlcat(rpl, "-", sizeof(rpl)); + else + strlcat(rpl, "+", sizeof(rpl)); + strlcat(rpl, Client_User(c), sizeof(rpl)); + strlcat(rpl, "@", sizeof(rpl)); + strlcat(rpl, Client_HostnameCloaked(c), sizeof(rpl)); + strlcat(rpl, " ", sizeof(rpl)); } } - ngt_TrimLastChr( rpl, ' '); + ngt_TrimLastChr(rpl, ' '); - return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) ); + return IRC_WriteStrClient(Client, rpl, Client_ID(Client)); } /* IRC_USERHOST */ +/** + * Handler for the IRC command "USERS". + * See RFC 2812 section 4.6. As suggested there the command is disabled. + */ +GLOBAL bool +IRC_USERS(CLIENT * Client, REQUEST * Req) +{ + return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG, + Client_ID(Client), Req->command); +} /* IRC_USERS */ + + GLOBAL bool IRC_VERSION( CLIENT *Client, REQUEST *Req ) { CLIENT *target, *prefix; -#ifdef CVSDATE - char ver[12], vertxt[30]; -#endif assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); /* Ziel suchen */ @@ -523,25 +744,98 @@ IRC_VERSION( CLIENT *Client, REQUEST *Req ) return CONNECTED; } - /* mit Versionsinfo antworten */ - IRC_SetPenalty( Client, 1 ); -#ifdef CVSDATE - strlcpy( ver, CVSDATE, sizeof( ver )); - strncpy( ver + 4, ver + 5, 2 ); - strncpy( ver + 6, ver + 8, 3 ); - snprintf( vertxt, sizeof( vertxt ), "%s(%s)", PACKAGE_VERSION, ver ); - return IRC_WriteStrClient( Client, RPL_VERSION_MSG, Client_ID( prefix ), PACKAGE_NAME, vertxt, NGIRCd_DebugLevel, Conf_ServerName, NGIRCd_VersionAddition ); -#else - return IRC_WriteStrClient( Client, RPL_VERSION_MSG, Client_ID( prefix ), PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_DebugLevel, Conf_ServerName, NGIRCd_VersionAddition ); -#endif + /* send version information */ + IRC_SetPenalty(Client, 1); + return IRC_WriteStrClient(Client, RPL_VERSION_MSG, Client_ID(prefix), + PACKAGE_NAME, PACKAGE_VERSION, + NGIRCd_DebugLevel, Conf_ServerName, + NGIRCd_VersionAddition); } /* IRC_VERSION */ +static bool +write_whoreply(CLIENT *Client, CLIENT *c, const char *channelname, const char *flags) +{ + return IRC_WriteStrClient(Client, RPL_WHOREPLY_MSG, Client_ID(Client), + channelname, Client_User(c), + Client_HostnameCloaked(c), + Client_ID(Client_Introducer(c)), Client_ID(c), + flags, Client_Hops(c), Client_Info(c)); +} + + +static const char * +who_flags_status(const char *client_modes) +{ + if (strchr(client_modes, 'a')) + return "G"; /* away */ + return "H"; +} + + +static const char * +who_flags_qualifier(const char *chan_user_modes) +{ + if (strchr(chan_user_modes, 'o')) + return "@"; + else if (strchr(chan_user_modes, 'v')) + return "+"; + return ""; +} + + +static bool +IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps) +{ + bool is_visible, is_member, is_ircop; + CL2CHAN *cl2chan; + const char *client_modes; + const char *chan_user_modes; + char flags[8]; + CLIENT *c; + + assert( Client != NULL ); + assert( Chan != NULL ); + + is_member = Channel_IsMemberOf(Chan, Client); + + /* Secret channel? */ + if (!is_member && strchr(Channel_Modes(Chan), 's')) + return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan)); + + cl2chan = Channel_FirstMember(Chan); + for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) { + c = Channel_GetClient(cl2chan); + + client_modes = Client_Modes(c); + is_ircop = strchr(client_modes, 'o') != NULL; + if (OnlyOps && !is_ircop) + continue; + + is_visible = strchr(client_modes, 'i') == NULL; + if (is_member || is_visible) { + strcpy(flags, who_flags_status(client_modes)); + if (is_ircop) + strlcat(flags, "*", sizeof(flags)); + + chan_user_modes = Channel_UserModes(Chan, c); + strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags)); + + if (!write_whoreply(Client, c, Channel_Name(Chan), flags)) + return DISCONNECTED; + } + } + return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan)); +} /* IRC_Send_WHO */ + + GLOBAL bool IRC_WHO( CLIENT *Client, REQUEST *Req ) { - bool ok, only_ops; - char flags[8], *ptr; + bool only_ops, have_arg, client_match; + const char *channelname, *client_modes, *chan_user_modes; + char pattern[COMMAND_LEN]; + char flags[4]; CL2CHAN *cl2chan; CHANNEL *chan, *cn; CLIENT *c; @@ -549,276 +843,581 @@ IRC_WHO( CLIENT *Client, REQUEST *Req ) assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ - if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); + if (Req->argc > 2) + return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); only_ops = false; - chan = NULL; + have_arg = false; - if( Req->argc == 2 ) - { - /* Nur OPs anzeigen? */ - if( strcmp( Req->argv[1], "o" ) == 0 ) only_ops = true; + if (Req->argc == 2) { + if (strcmp(Req->argv[1], "o") == 0) + only_ops = true; #ifdef STRICT_RFC - else return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); + else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command); #endif } - if( Req->argc >= 1 ) - { - /* wurde ein Channel oder Nick-Mask angegeben? */ - chan = Channel_Search( Req->argv[0] ); + IRC_SetPenalty(Client, 1); + if (Req->argc >= 1) { /* Channel or Mask. */ + chan = Channel_Search(Req->argv[0]); + if (chan) + return IRC_Send_WHO(Client, chan, only_ops); + if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */ + have_arg = true; + strlcpy(pattern, Req->argv[0], sizeof(pattern)); + ngt_LowerStr(pattern); + IRC_SetPenalty(Client, 3); + } } - if( chan ) - { - /* User eines Channels ausgeben */ - if( ! IRC_Send_WHO( Client, chan, only_ops )) return DISCONNECTED; - } + for (c = Client_First(); c != NULL; c = Client_Next(c)) { + if (Client_Type(c) != CLIENT_USER) + continue; + /* + * RFC 2812, 3.6.1: + * In the absence of the parameter, all visible (users who aren't + * invisible (user mode +i) and who don't have a common channel + * with the requesting client) are listed. + * + * The same result can be achieved by using a [sic] of "0" + * or any wildcard which will end up matching every visible user. + * + * The [sic] passed to WHO is matched against users' host, server, real name and + * nickname if the channel cannot be found. + */ + client_modes = Client_Modes(c); + if (strchr(client_modes, 'i')) + continue; + + if (only_ops && !strchr(client_modes, 'o')) + continue; + + if (have_arg) { /* match pattern against user host/server/name/nick */ + client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */ + if (!client_match) + client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */ + if (!client_match) + client_match = Match(Req->argv[0], Client_Info(c)); /* realname */ + if (!client_match) + client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */ + + if (!client_match) /* This isn't the client you're looking for */ + continue; + } - c = Client_First( ); - while( c ) - { - if(( Client_Type( c ) == CLIENT_USER ) && ( ! strchr( Client_Modes( c ), 'i' ))) - { - ok = false; - if( Req->argc == 0 ) ok = true; - else - { - if( strcasecmp( Req->argv[0], Client_ID( c )) == 0 ) ok = true; - else if( strcmp( Req->argv[0], "0" ) == 0 ) ok = true; - } + strcpy(flags, who_flags_status(client_modes)); - if( ok && (( ! only_ops ) || ( strchr( Client_Modes( c ), 'o' )))) - { - /* Get flags */ - strcpy( flags, "H" ); - if( strchr( Client_Modes( c ), 'o' )) strlcat( flags, "*", sizeof( flags )); - - /* Search suitable channel */ - cl2chan = Channel_FirstChannelOf( c ); - while( cl2chan ) - { - cn = Channel_GetChannel( cl2chan ); - if( Channel_IsMemberOf( cn, Client ) || - ! strchr( Channel_Modes( cn ), 's' )) - { - ptr = Channel_Name( cn ); - break; - } - cl2chan = Channel_NextChannelOf( c, cl2chan ); - } - if( ! cl2chan ) ptr = "*"; + if (strchr(client_modes, 'o')) /* this client is an operator */ + strlcat(flags, "*", sizeof(flags)); - if( ! IRC_WriteStrClient( Client, RPL_WHOREPLY_MSG, Client_ID( Client ), ptr, Client_User( c ), Client_Hostname( c ), Client_ID( Client_Introducer( c )), Client_ID( c ), flags, Client_Hops( c ), Client_Info( c ))) return DISCONNECTED; + /* Search suitable channel */ + cl2chan = Channel_FirstChannelOf(c); + while (cl2chan) { + cn = Channel_GetChannel(cl2chan); + if (Channel_IsMemberOf(cn, Client) || + !strchr(Channel_Modes(cn), 's')) + { + channelname = Channel_Name(cn); + break; } + cl2chan = Channel_NextChannelOf(c, cl2chan); } - - /* naechster Client */ - c = Client_Next( c ); + if (cl2chan) { + chan = Channel_GetChannel(cl2chan); + chan_user_modes = Channel_UserModes(chan, c); + strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags)); + } else + channelname = "*"; + + if (!write_whoreply(Client, c, channelname, flags)) + return DISCONNECTED; } - if( chan ) return IRC_WriteStrClient( Client, RPL_ENDOFWHO_MSG, Client_ID( Client ), Channel_Name( chan )); - else if( Req->argc == 0 ) return IRC_WriteStrClient( Client, RPL_ENDOFWHO_MSG, Client_ID( Client ), "*" ); - else return IRC_WriteStrClient( Client, RPL_ENDOFWHO_MSG, Client_ID( Client ), Req->argv[0] ); + if (Req->argc > 0) + channelname = Req->argv[0]; + else + channelname = "*"; + + return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname); } /* IRC_WHO */ -GLOBAL bool -IRC_WHOIS( CLIENT *Client, REQUEST *Req ) +/** + * Generate WHOIS reply of one actual client. + * + * @param Client The client from which this command has been received. + * @param from The client requesting the information ("originator"). + * @param c The client of which information should be returned. + * @returns CONNECTED or DISCONNECTED. + */ +static bool +IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c) { - CLIENT *from, *target, *c; char str[LINE_LEN + 1]; CL2CHAN *cl2chan; CHANNEL *chan; - assert( Client != NULL ); - assert( Req != NULL ); - - /* Bad number of parameters? */ - if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); - - /* Search client */ - c = Client_Search( Req->argv[Req->argc - 1] ); - if(( ! c ) || ( Client_Type( c ) != CLIENT_USER )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[Req->argc - 1] ); - - /* Search sender of the WHOIS */ - if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix ); - else from = Client; - if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix ); - - /* Forward to other server? */ - if( Req->argc > 1 ) - { - /* Search target server (can be specified as nick of that server!) */ - target = Client_Search( Req->argv[0] ); - if( ! target ) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] ); - } - else target = Client_ThisServer( ); - - assert( target != NULL ); - - if(( Client_NextHop( target ) != Client_ThisServer( )) && ( Client_Type( Client_NextHop( target )) == CLIENT_SERVER )) return IRC_WriteStrClientPrefix( target, from, "WHOIS %s :%s", Req->argv[0], Req->argv[1] ); - - /* Nick, user and name */ - if( ! IRC_WriteStrClient( from, RPL_WHOISUSER_MSG, Client_ID( from ), Client_ID( c ), Client_User( c ), Client_Hostname( c ), Client_Info( c ))) return DISCONNECTED; + /* Nick, user, hostname and client info */ + if (!IRC_WriteStrClient(from, RPL_WHOISUSER_MSG, Client_ID(from), + Client_ID(c), Client_User(c), + Client_HostnameCloaked(c), Client_Info(c))) + return DISCONNECTED; /* Server */ - if( ! IRC_WriteStrClient( from, RPL_WHOISSERVER_MSG, Client_ID( from ), Client_ID( c ), Client_ID( Client_Introducer( c )), Client_Info( Client_Introducer( c )))) return DISCONNECTED; + if (!IRC_WriteStrClient(from, RPL_WHOISSERVER_MSG, Client_ID(from), + Client_ID(c), Client_ID(Client_Introducer(c)), + Client_Info(Client_Introducer(c)))) + return DISCONNECTED; /* Channels */ - snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c )); - cl2chan = Channel_FirstChannelOf( c ); - while( cl2chan ) - { - chan = Channel_GetChannel( cl2chan ); - assert( chan != NULL ); + snprintf(str, sizeof(str), RPL_WHOISCHANNELS_MSG, + Client_ID(from), Client_ID(c)); + cl2chan = Channel_FirstChannelOf(c); + while (cl2chan) { + chan = Channel_GetChannel(cl2chan); + assert(chan != NULL); /* next */ - cl2chan = Channel_NextChannelOf( c, cl2chan ); + cl2chan = Channel_NextChannelOf(c, cl2chan); /* Secret channel? */ - if( strchr( Channel_Modes( chan ), 's' ) && ! Channel_IsMemberOf( chan, Client )) continue; + if (strchr(Channel_Modes(chan), 's') + && !Channel_IsMemberOf(chan, Client)) + continue; + + /* Local channel and request is not from a user? */ + if (Client_Type(Client) == CLIENT_SERVER + && Channel_IsLocal(chan)) + continue; /* Concatenate channel names */ - if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str )); - if( strchr( Channel_UserModes( chan, c ), 'o' )) strlcat( str, "@", sizeof( str )); - else if( strchr( Channel_UserModes( chan, c ), 'v' )) strlcat( str, "+", sizeof( str )); - strlcat( str, Channel_Name( chan ), sizeof( str )); + if (str[strlen(str) - 1] != ':') + strlcat(str, " ", sizeof(str)); - if( strlen( str ) > ( LINE_LEN - CHANNEL_NAME_LEN - 4 )) - { + strlcat(str, who_flags_qualifier(Channel_UserModes(chan, c)), + sizeof(str)); + strlcat(str, Channel_Name(chan), sizeof(str)); + + if (strlen(str) > (LINE_LEN - CHANNEL_NAME_LEN - 4)) { /* Line becomes too long: send it! */ - if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED; - snprintf( str, sizeof( str ), RPL_WHOISCHANNELS_MSG, Client_ID( from ), Client_ID( c )); + if (!IRC_WriteStrClient(Client, "%s", str)) + return DISCONNECTED; + snprintf(str, sizeof(str), RPL_WHOISCHANNELS_MSG, + Client_ID(from), Client_ID(c)); } } - if( str[strlen( str ) - 1] != ':') - { + if(str[strlen(str) - 1] != ':') { /* There is data left to send: */ - if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED; + if (!IRC_WriteStrClient(Client, "%s", str)) + return DISCONNECTED; } /* IRC-Operator? */ - if( Client_HasMode( c, 'o' )) - { - if( ! IRC_WriteStrClient( from, RPL_WHOISOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED; - } + if (Client_HasMode(c, 'o') && + !IRC_WriteStrClient(from, RPL_WHOISOPERATOR_MSG, + Client_ID(from), Client_ID(c))) + return DISCONNECTED; + + /* Connected using SSL? */ + if (Conn_UsesSSL(Client_Conn(c)) && + !IRC_WriteStrClient(from, RPL_WHOISSSL_MSG, + Client_ID(from), Client_ID(c))) + return DISCONNECTED; + + /* Idle and signon time (local clients only!) */ + if (!Conf_MorePrivacy && Client_Conn(c) > NONE && + !IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG, + Client_ID(from), Client_ID(c), + (unsigned long)Conn_GetIdle(Client_Conn(c)), + (unsigned long)Conn_GetSignon(Client_Conn(c)))) + return DISCONNECTED; - /* Idle (only local clients) */ - if( Client_Conn( c ) > NONE ) - { - if( ! IRC_WriteStrClient( from, RPL_WHOISIDLE_MSG, Client_ID( from ), Client_ID( c ), Conn_GetIdle( Client_Conn ( c )))) return DISCONNECTED; + /* Away? */ + if (Client_HasMode(c, 'a') && + !IRC_WriteStrClient(from, RPL_AWAY_MSG, + Client_ID(from), Client_ID(c), + Client_Away(c))) + return DISCONNECTED; + + return IRC_WriteStrClient(from, RPL_ENDOFWHOIS_MSG, + Client_ID(from), Client_ID(c)); +} /* IRC_WHOIS_SendReply */ + + +/** + * Handler for the IRC "WHOIS" command. + * + * See RFC 2812, 3.6.2 "Whois query". + * + * @param Client The client from which this command has been received. + * @param Req Request structure with prefix and all parameters. + * @return CONNECTED or DISCONNECTED. + */ +GLOBAL bool +IRC_WHOIS( CLIENT *Client, REQUEST *Req ) +{ + CLIENT *from, *target, *c; + unsigned int match_count = 0, found = 0; + bool has_wildcards, is_remote; + bool got_wildcard = false; + const char *query; + + assert( Client != NULL ); + assert( Req != NULL ); + + /* Bad number of parameters? */ + if (Req->argc < 1 || Req->argc > 2) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + + /* Search sender of the WHOIS */ + if (Client_Type(Client) == CLIENT_SERVER) { + from = Client_Search(Req->prefix); + } else { + IRC_SetPenalty(Client, 1); + from = Client; } + if (!from) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->prefix); + + /* Get target server for this command */ + if (Req->argc > 1) { + /* Search the target server, which can be specified as a + * nick name on that server as well: */ + target = Client_Search(Req->argv[0]); + if (!target) + return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG, + Client_ID(from), Req->argv[0]); + } else + target = Client_ThisServer(); + assert(target != NULL); - /* Away? */ - if( Client_HasMode( c, 'a' )) + /* Forward to other server? */ + if (Client_NextHop(target) != Client_ThisServer() && + Client_Type(Client_NextHop(target)) == CLIENT_SERVER) + return IRC_WriteStrClientPrefix(target, from, + "WHOIS %s :%s", + Req->argv[0], Req->argv[1]); + + is_remote = Client_Conn(from) < 0; + for (query = strtok(Req->argv[Req->argc - 1], ","); + query && found < 3; + query = strtok(NULL, ","), found++) { - if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( c ), Client_Away( c ))) return DISCONNECTED; - } + has_wildcards = query[strcspn(query, "*?")] != 0; + /* + * follows ircd 2.10 implementation: + * - handle up to 3 targets + * - no wildcards for remote clients + * - only one wildcard target per local client + * + * also, at most ten matches are returned. + */ + if (!has_wildcards || is_remote) { + c = Client_Search(query); + if (c) { + if (!IRC_WHOIS_SendReply(Client, from, c)) + return DISCONNECTED; + } else { + if (!IRC_WriteStrClient(Client, + ERR_NOSUCHNICK_MSG, + Client_ID(Client), + query)) + return DISCONNECTED; + } + continue; + } + if (got_wildcard) { + /* we already handled one wildcard query */ + if (!IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), query)) + return DISCONNECTED; + continue; + } + got_wildcard = true; + IRC_SetPenalty(Client, 3); + + for (c = Client_First(); c && match_count < 10; c = Client_Next(c)) { + if (Client_Type(c) != CLIENT_USER) + continue; + if (!MatchCaseInsensitive(query, Client_ID(c))) + continue; + if (!IRC_WHOIS_SendReply(Client, from, c)) + return DISCONNECTED; + match_count++; + } - /* End of Whois */ - return IRC_WriteStrClient( from, RPL_ENDOFWHOIS_MSG, Client_ID( from ), Client_ID( c )); + if (match_count == 0) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->argv[Req->argc - 1]); + } + return CONNECTED; } /* IRC_WHOIS */ +static bool +WHOWAS_EntryWrite(CLIENT *prefix, WHOWAS *entry) +{ + char t_str[60]; + + (void)strftime(t_str, sizeof(t_str), "%a %b %d %H:%M:%S %Y", + localtime(&entry->time)); + + if (!IRC_WriteStrClient(prefix, RPL_WHOWASUSER_MSG, Client_ID(prefix), + entry->id, entry->user, entry->host, entry->info)) + return DISCONNECTED; + + return IRC_WriteStrClient(prefix, RPL_WHOISSERVER_MSG, Client_ID(prefix), + entry->id, entry->server, t_str); +} + +/** + * IRC "WHOWAS" function. + * This function implements the IRC command "WHOWHAS". It handles local + * requests and request that should be forwarded to other servers. + */ GLOBAL bool IRC_WHOWAS( CLIENT *Client, REQUEST *Req ) { + CLIENT *target, *prefix; + WHOWAS *whowas; + char tok_buf[COMMAND_LEN]; + int max, last, count, i, nc; + const char *nick; + assert( Client != NULL ); assert( Req != NULL ); - /* Falsche Anzahl Parameter? */ - if(( Req->argc < 1 ) || ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); + /* Do not reveal any info on disconnected users? */ + if (Conf_MorePrivacy) + return CONNECTED; - /* ... */ + /* Wrong number of parameters? */ + if (Req->argc > 3) + return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, + Client_ID(Client), Req->command); + if (Req->argc < 1) + return IRC_WriteStrClient(Client, ERR_NONICKNAMEGIVEN_MSG, Client_ID(Client)); + + /* Search target */ + if (Req->argc == 3) + target = Client_Search(Req->argv[2]); + else + target = Client_ThisServer(); + + /* Get prefix */ + if (Client_Type(Client) == CLIENT_SERVER) + prefix = Client_Search(Req->prefix); + else + prefix = Client; + + if (!prefix) + return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, + Client_ID(Client), Req->prefix); - return CONNECTED; + /* Forward to other server? */ + if (target != Client_ThisServer()) { + if (!target || (Client_Type(target) != CLIENT_SERVER)) + return IRC_WriteStrClient(prefix, ERR_NOSUCHSERVER_MSG, + Client_ID(prefix), Req->argv[2]); + + /* Forward */ + IRC_WriteStrClientPrefix( target, prefix, "WHOWAS %s %s %s", + Req->argv[0], Req->argv[1], + Req->argv[2] ); + return CONNECTED; + } + + whowas = Client_GetWhowas( ); + last = Client_GetLastWhowasIndex( ); + if (last < 0) + last = 0; + + max = DEFAULT_WHOWAS; + if (Req->argc > 1) { + max = atoi(Req->argv[1]); + if (max < 1) + max = MAX_WHOWAS; + } + + /* + * Break up the nick argument into a list of nicks, if applicable + * Can't modify Req->argv[0] because we need it for RPL_ENDOFWHOWAS_MSG. + */ + strlcpy(tok_buf, Req->argv[0], sizeof(tok_buf)); + nick = strtok(tok_buf, ","); + + for (i=last, count=0; nick != NULL ; nick = strtok(NULL, ",")) { + nc = 0; + do { + /* Used entry? */ + if (whowas[i].time > 0 && strcasecmp(nick, whowas[i].id) == 0) { + if (!WHOWAS_EntryWrite(prefix, &whowas[i])) + return DISCONNECTED; + nc++; + count++; + } + /* previous entry */ + i--; + + /* "underflow", wrap around */ + if (i < 0) + i = MAX_WHOWAS - 1; + + if (nc && count >= max) + break; + } while (i != last); + + if (nc == 0 && !IRC_WriteStrClient(prefix, ERR_WASNOSUCHNICK_MSG, + Client_ID(prefix), nick)) + return DISCONNECTED; + } + return IRC_WriteStrClient(prefix, RPL_ENDOFWHOWAS_MSG, Client_ID(prefix), Req->argv[0]); } /* IRC_WHOWAS */ +/** + * Send LUSERS reply to a client. + * + * @param Client The receipient of the information. + * @return CONNECTED or DISCONNECTED. + */ GLOBAL bool -IRC_Send_LUSERS( CLIENT *Client ) +IRC_Send_LUSERS(CLIENT *Client) { - long cnt; + unsigned long cnt; +#ifndef STRICT_RFC + unsigned long max; +#endif - assert( Client != NULL ); + assert(Client != NULL); /* Users, services and serevers in the network */ - if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED; + if (!IRC_WriteStrClient(Client, RPL_LUSERCLIENT_MSG, Client_ID(Client), + Client_UserCount(), Client_ServiceCount(), + Client_ServerCount())) + return DISCONNECTED; /* Number of IRC operators */ cnt = Client_OperCount( ); - if( cnt > 0 ) - { - if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED; + if (cnt > 0) { + if (!IRC_WriteStrClient(Client, RPL_LUSEROP_MSG, + Client_ID(Client), cnt)) + return DISCONNECTED; } /* Unknown connections */ cnt = Client_UnknownCount( ); - if( cnt > 0 ) - { - if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED; + if (cnt > 0) { + if (!IRC_WriteStrClient(Client, RPL_LUSERUNKNOWN_MSG, + Client_ID(Client), cnt)) + return DISCONNECTED; } /* Number of created channels */ - if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED; + if (!IRC_WriteStrClient(Client, RPL_LUSERCHANNELS_MSG, + Client_ID(Client), Channel_Count())) + return DISCONNECTED; /* Number of local users, services and servers */ - if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED; + if (!IRC_WriteStrClient(Client, RPL_LUSERME_MSG, Client_ID(Client), + Client_MyUserCount(), Client_MyServiceCount(), + Client_MyServerCount())) + return DISCONNECTED; #ifndef STRICT_RFC /* Maximum number of local users */ - if( ! IRC_WriteStrClient( Client, RPL_LOCALUSERS_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyMaxUserCount( ))) return DISCONNECTED; + cnt = Client_MyUserCount(); + max = Client_MyMaxUserCount(); + if (! IRC_WriteStrClient(Client, RPL_LOCALUSERS_MSG, Client_ID(Client), + cnt, max, cnt, max)) + return DISCONNECTED; /* Maximum number of users in the network */ - if( ! IRC_WriteStrClient( Client, RPL_NETUSERS_MSG, Client_ID( Client ), Client_UserCount( ), Client_MaxUserCount( ))) return DISCONNECTED; + cnt = Client_UserCount(); + max = Client_MaxUserCount(); + if(! IRC_WriteStrClient(Client, RPL_NETUSERS_MSG, Client_ID(Client), + cnt, max, cnt, max)) + return DISCONNECTED; + /* Connection counters */ + if (! IRC_WriteStrClient(Client, RPL_STATSCONN_MSG, Client_ID(Client), + Conn_CountMax(), Conn_CountAccepted())) + return DISCONNECTED; #endif return CONNECTED; } /* IRC_Send_LUSERS */ +static bool +Show_MOTD_Start(CLIENT *Client) +{ + return IRC_WriteStrClient(Client, RPL_MOTDSTART_MSG, + Client_ID( Client ), Client_ID( Client_ThisServer( ))); +} + +static bool +Show_MOTD_Sendline(CLIENT *Client, const char *msg) +{ + return IRC_WriteStrClient(Client, RPL_MOTD_MSG, Client_ID( Client ), msg); +} + +static bool +Show_MOTD_End(CLIENT *Client) +{ + return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client )); +} + +#ifdef SSL_SUPPORT +static bool Show_MOTD_SSLInfo(CLIENT *Client) +{ + bool ret = true; + char buf[COMMAND_LEN] = "Connected using Cipher "; + + if (!Conn_GetCipherInfo(Client_Conn(Client), buf + 23, sizeof buf - 23)) + return true; + + if (!Show_MOTD_Sendline(Client, buf)) + ret = false; + + return ret; +} +#else +static inline bool +Show_MOTD_SSLInfo(UNUSED CLIENT *c) +{ return true; } +#endif + GLOBAL bool IRC_Show_MOTD( CLIENT *Client ) { - bool ok; - char line[127]; - FILE *fd; + const char *line; + size_t len_tot, len_str; assert( Client != NULL ); - if( Conf_MotdPhrase[0] ) - { - if( ! IRC_WriteStrClient( Client, RPL_MOTDSTART_MSG, Client_ID( Client ), Client_ID( Client_ThisServer( )))) return DISCONNECTED; - if( ! IRC_WriteStrClient( Client, RPL_MOTD_MSG, Client_ID( Client ), Conf_MotdPhrase )) return DISCONNECTED; - return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client )); - } + len_tot = array_bytes(&Conf_Motd); + if (len_tot == 0 && !Conn_UsesSSL(Client_Conn(Client))) + return IRC_WriteStrClient(Client, ERR_NOMOTD_MSG, Client_ID(Client)); - fd = fopen( Conf_MotdFile, "r" ); - if( ! fd ) - { - Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno )); - return IRC_WriteStrClient( Client, ERR_NOMOTD_MSG, Client_ID( Client ) ); - } + if (!Show_MOTD_Start(Client)) + return DISCONNECTED; - if( ! IRC_WriteStrClient( Client, RPL_MOTDSTART_MSG, Client_ID( Client ), Client_ID( Client_ThisServer( )))) return DISCONNECTED; - while( true ) - { - if( ! fgets( line, sizeof( line ), fd )) break; + line = array_start(&Conf_Motd); + while (len_tot > 0) { + len_str = strlen(line) + 1; - ngt_TrimLastChr( line, '\n'); + assert(len_tot >= len_str); + len_tot -= len_str; - if( ! IRC_WriteStrClient( Client, RPL_MOTD_MSG, Client_ID( Client ), line )) - { - fclose( fd ); - return false; - } + if (!Show_MOTD_Sendline(Client, line)) + return DISCONNECTED; + line += len_str; } - ok = IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ) ); - - fclose( fd ); - return ok; + if (!Show_MOTD_SSLInfo(Client)) + return DISCONNECTED; + return Show_MOTD_End(Client); } /* IRC_Show_MOTD */ @@ -836,6 +1435,10 @@ IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan ) if( Channel_IsMemberOf( Chan, Client )) is_member = true; else is_member = false; + /* Do not print info on channel memberships to anyone that is not member? */ + if (Conf_MorePrivacy && !is_member) + return CONNECTED; + /* Secret channel? */ if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED; @@ -878,52 +1481,22 @@ IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan ) } /* IRC_Send_NAMES */ +/** + * Send the ISUPPORT numeric (005). + * This numeric indicates the features that are supported by this server. + * See for details. + */ GLOBAL bool -IRC_Send_WHO( CLIENT *Client, CHANNEL *Chan, bool OnlyOps ) +IRC_Send_ISUPPORT(CLIENT * Client) { - bool is_visible, is_member; - CL2CHAN *cl2chan; - char flags[8]; - CLIENT *c; - - assert( Client != NULL ); - assert( Chan != NULL ); - - if( Channel_IsMemberOf( Chan, Client )) is_member = true; - else is_member = false; - - /* Secret channel? */ - if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED; - - /* Alle Mitglieder suchen */ - cl2chan = Channel_FirstMember( Chan ); - while( cl2chan ) - { - c = Channel_GetClient( cl2chan ); - - if( strchr( Client_Modes( c ), 'i' )) is_visible = false; - else is_visible = true; - - if( is_member || is_visible ) - { - /* Flags zusammenbasteln */ - strcpy( flags, "H" ); - if( strchr( Client_Modes( c ), 'o' )) strlcat( flags, "*", sizeof( flags )); - if( strchr( Channel_UserModes( Chan, c ), 'o' )) strlcat( flags, "@", sizeof( flags )); - else if( strchr( Channel_UserModes( Chan, c ), 'v' )) strlcat( flags, "+", sizeof( flags )); - - /* ausgeben */ - if(( ! OnlyOps ) || ( strchr( Client_Modes( c ), 'o' ))) - { - if( ! IRC_WriteStrClient( Client, RPL_WHOREPLY_MSG, Client_ID( Client ), Channel_Name( Chan ), Client_User( c ), Client_Hostname( c ), Client_ID( Client_Introducer( c )), Client_ID( c ), flags, Client_Hops( c ), Client_Info( c ))) return DISCONNECTED; - } - } - - /* naechstes Mitglied suchen */ - cl2chan = Channel_NextMember( Chan, cl2chan ); - } - return CONNECTED; -} /* IRC_Send_WHO */ + if (!IRC_WriteStrClient(Client, RPL_ISUPPORT1_MSG, Client_ID(Client), + Conf_MaxJoins)) + return DISCONNECTED; + return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client), + CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1, + COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1, + COMMAND_LEN - 113); +} /* IRC_Send_ISUPPORT */ /* -eof- */