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- /*
- * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2012 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.
- */
- #include "portab.h"
- /**
- * @file
- * IRC info commands
- */
- #include "imp.h"
- #include <assert.h>
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <strings.h>
- #include "ngircd.h"
- #include "conn-func.h"
- #include "conn-zip.h"
- #include "channel.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.h"
- #include "irc-write.h"
- #include "client-cap.h"
- #include "exp.h"
- #include "irc-info.h"
- GLOBAL bool
- IRC_ADMIN(CLIENT *Client, REQUEST *Req )
- {
- CLIENT *target, *prefix;
- assert( Client != NULL );
- assert( Req != NULL );
- if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* find target ... */
- if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
- else target = Client_ThisServer( );
- /* 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 );
- /* 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] );
- /* forward */
- IRC_WriteStrClientPrefix( target, prefix, "ADMIN %s", Req->argv[0] );
- return CONNECTED;
- }
- /* mit Versionsinfo antworten */
- if( ! IRC_WriteStrClient( Client, RPL_ADMINME_MSG, Client_ID( prefix ), Conf_ServerName )) return DISCONNECTED;
- if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC1_MSG, Client_ID( prefix ), Conf_ServerAdmin1 )) return DISCONNECTED;
- if( ! IRC_WriteStrClient( Client, RPL_ADMINLOC2_MSG, Client_ID( prefix ), Conf_ServerAdmin2 )) return DISCONNECTED;
- if( ! IRC_WriteStrClient( Client, RPL_ADMINEMAIL_MSG, Client_ID( prefix ), Conf_ServerAdminMail )) return DISCONNECTED;
- IRC_SetPenalty( Client, 1 );
- return CONNECTED;
- } /* 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 */
- /**
- * Handler for the IRC "ISON" command.
- *
- * See RFC 2812, 4.9 "Ison message".
- *
- * @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_ISON( CLIENT *Client, REQUEST *Req )
- {
- char rpl[COMMAND_LEN];
- CLIENT *c;
- char *ptr;
- int i;
- assert(Client != NULL);
- assert(Req != NULL);
- /* Bad number of arguments? */
- if (Req->argc < 1)
- return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
- Client_ID(Client), Req->command);
- strlcpy(rpl, RPL_ISON_MSG, sizeof rpl);
- for (i = 0; i < Req->argc; i++) {
- /* "All" ircd even parse ":<x> <y> ..." arguments and split
- * them up; so we do the same ... */
- ptr = strtok(Req->argv[i], " ");
- while (ptr) {
- ngt_TrimStr(ptr);
- c = Client_Search(ptr);
- if (c && Client_Type(c) == CLIENT_USER) {
- strlcat(rpl, Client_ID(c), sizeof(rpl));
- strlcat(rpl, " ", sizeof(rpl));
- }
- ptr = strtok(NULL, " ");
- }
- }
- ngt_TrimLastChr(rpl, ' ');
- return IRC_WriteStrClient(Client, rpl, Client_ID(Client));
- } /* IRC_ISON */
- /**
- * Handler for the IRC "LINKS" command.
- *
- * See RFC 2812, 3.4.5 "Links message".
- *
- * @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_LINKS(CLIENT *Client, REQUEST *Req)
- {
- CLIENT *target, *from, *c;
- char *mask;
- assert(Client != NULL);
- assert(Req != NULL);
- IRC_SetPenalty(Client, 1);
- if (Req->argc > 2)
- return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
- Client_ID(Client), Req->command);
- /* Get pointer to server mask or "*", if none given */
- if (Req->argc > 0)
- mask = Req->argv[Req->argc - 1];
- else
- mask = "*";
- 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? */
- if (Req->argc == 2) {
- 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] );
- else
- if (target != Client_ThisServer())
- return IRC_WriteStrClientPrefix(target, from,
- "LINKS %s %s", Req->argv[0],
- Req->argv[1]);
- }
- c = Client_First();
- while (c) {
- if (Client_Type(c) == CLIENT_SERVER
- && MatchCaseInsensitive(mask, Client_ID(c))) {
- if (!IRC_WriteStrClient(from, RPL_LINKS_MSG,
- Client_ID(from), Client_ID(c),
- Client_ID(Client_TopServer(c)
- ? Client_TopServer(c)
- : Client_ThisServer()),
- Client_Hops(c), Client_Info(c)))
- return DISCONNECTED;
- }
- c = Client_Next(c);
- }
- return IRC_WriteStrClient(from, RPL_ENDOFLINKS_MSG,
- Client_ID(from), mask);
- } /* IRC_LINKS */
- GLOBAL bool
- IRC_LUSERS( CLIENT *Client, REQUEST *Req )
- {
- CLIENT *target, *from;
- assert( Client != NULL );
- assert( Req != NULL );
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Absender 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 );
- /* An anderen Server forwarden? */
- if( Req->argc == 2 )
- {
- 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] );
- else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LUSERS %s %s", Req->argv[0], Req->argv[1] );
- }
- /* Wer ist der Absender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
- IRC_Send_LUSERS( target );
- IRC_SetPenalty( target, 1 );
- return CONNECTED;
- } /* IRC_LUSERS */
- /**
- * Handler for the IRC command "SERVLIST".
- * List registered services, see RFC 2811, section 3.5.1: the syntax is
- * "SERVLIST [<mask> [<type>]]".
- */
- 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 )
- {
- CLIENT *from, *target;
- assert( Client != NULL );
- assert( Req != NULL );
- 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 )
- {
- /* 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] );
- if( target != Client_ThisServer( ))
- {
- /* Ok, anderer Server ist das Ziel: forwarden */
- return IRC_WriteStrClientPrefix( target, from, "MOTD %s", Req->argv[0] );
- }
- }
- IRC_SetPenalty( from, 3 );
- return IRC_Show_MOTD( from );
- } /* IRC_MOTD */
- GLOBAL bool
- IRC_NAMES( CLIENT *Client, REQUEST *Req )
- {
- char rpl[COMMAND_LEN], *ptr;
- CLIENT *target, *from, *c;
- CHANNEL *chan;
- 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( )) {
- /* target is another server, forward */
- return IRC_WriteStrClientPrefix( target, from, "NAMES %s :%s", Req->argv[0], Req->argv[1] );
- }
- }
- if( Req->argc > 0 )
- {
- /* bestimmte Channels durchgehen */
- ptr = strtok( Req->argv[0], "," );
- while( ptr )
- {
- chan = Channel_Search( ptr );
- if( chan )
- {
- /* print name */
- if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
- }
- if( ! IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), ptr )) return DISCONNECTED;
- /* get next channel name */
- ptr = strtok( NULL, "," );
- }
- return CONNECTED;
- }
- chan = Channel_First( );
- while( chan )
- {
- if( ! IRC_Send_NAMES( from, chan )) return DISCONNECTED;
- chan = Channel_Next( chan );
- }
- /* 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' )))
- {
- /* 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 ))
- {
- /* 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 ), "*", "*" );
- }
- }
- c = Client_Next( c );
- }
- if( rpl[strlen( rpl ) - 1] != ':')
- {
- if( ! IRC_WriteStrClient( from, "%s", rpl )) return DISCONNECTED;
- }
- IRC_SetPenalty( from, 1 );
- return IRC_WriteStrClient( from, RPL_ENDOFNAMES_MSG, Client_ID( from ), "*" );
- } /* 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 )
- {
- CLIENT *from, *target, *cl;
- CONN_ID con;
- char query;
- COMMAND *cmd;
- 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 '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 '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;
- }
- #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;
- 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_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, UNUSED REQUEST * Req)
- {
- return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
- Client_ID(Client));
- } /* IRC_SUMMON */
- GLOBAL bool
- IRC_TIME( CLIENT *Client, REQUEST *Req )
- {
- CLIENT *from, *target;
- char t_str[64];
- time_t t;
- assert( Client != NULL );
- assert( Req != NULL );
- if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- 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 )
- {
- 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( ))
- {
- return IRC_WriteStrClientPrefix( target, from, "TIME %s", Req->argv[0] );
- }
- }
- t = time( NULL );
- (void)strftime( t_str, 60, "%A %B %d %Y -- %H:%M %Z", localtime( &t ));
- return IRC_WriteStrClient( from, RPL_TIME_MSG, Client_ID( from ), Client_ID( Client_ThisServer( )), t_str );
- } /* IRC_TIME */
- /**
- * Handler for the IRC command "USERHOST".
- * See RFC 2812 section 4.8.
- */
- GLOBAL bool
- IRC_USERHOST(CLIENT *Client, REQUEST *Req)
- {
- char rpl[COMMAND_LEN];
- CLIENT *c;
- int max, i;
- 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_HostnameDisplayed(c), sizeof(rpl));
- strlcat(rpl, " ", sizeof(rpl));
- }
- }
- ngt_TrimLastChr(rpl, ' ');
- 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, UNUSED REQUEST * Req)
- {
- return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
- Client_ID(Client));
- } /* IRC_USERS */
- GLOBAL bool
- IRC_VERSION( CLIENT *Client, REQUEST *Req )
- {
- CLIENT *target, *prefix;
- assert( Client != NULL );
- assert( Req != NULL );
- if(( Req->argc > 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
- /* Ziel suchen */
- if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
- else target = Client_ThisServer( );
- /* Prefix ermitteln */
- 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? */
- 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 */
- IRC_WriteStrClientPrefix( target, prefix, "VERSION %s", Req->argv[0] );
- return CONNECTED;
- }
- /* 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_HostnameDisplayed(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";
- }
- /**
- * Return channel user mode prefix(es).
- *
- * @param Client The client requesting the mode prefixes.
- * @param chan_user_modes String with channel user modes.
- * @param str String buffer to which the prefix(es) will be appended.
- * @param len Size of "str" buffer.
- * @return Pointer to "str".
- */
- static char *
- who_flags_qualifier(CLIENT *Client, const char *chan_user_modes,
- char *str, size_t len)
- {
- assert(Client != NULL);
- if (Client_Cap(Client) & CLIENT_CAP_MULTI_PREFIX) {
- if (strchr(chan_user_modes, 'q'))
- strlcat(str, "~", len);
- if (strchr(chan_user_modes, 'a'))
- strlcat(str, "&", len);
- if (strchr(chan_user_modes, 'o'))
- strlcat(str, "@", len);
- if (strchr(chan_user_modes, 'h'))
- strlcat(str, "%", len);
- if (strchr(chan_user_modes, 'v'))
- strlcat(str, "+", len);
- return str;
- }
- if (strchr(chan_user_modes, 'q'))
- strlcat(str, "~", len);
- else if (strchr(chan_user_modes, 'a'))
- strlcat(str, "&", len);
- else if (strchr(chan_user_modes, 'o'))
- strlcat(str, "@", len);
- else if (strchr(chan_user_modes, 'h'))
- strlcat(str, "%", len);
- else if (strchr(chan_user_modes, 'v'))
- strlcat(str, "+", len);
- return str;
- }
- /**
- * Send WHO reply for a "channel target" ("WHO #channel").
- *
- * @param Client Client requesting the information.
- * @param Chan Channel being requested.
- * @param OnlyOps Only display IRC operators.
- * @return CONNECTED or DISCONNECTED.
- */
- static bool
- IRC_WHO_Channel(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
- {
- bool is_visible, is_member, is_ircop;
- CL2CHAN *cl2chan;
- const char *client_modes;
- char flags[10];
- CLIENT *c;
- int count = 0;
- assert( Client != NULL );
- assert( Chan != NULL );
- IRC_SetPenalty(Client, 1);
- 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));
- who_flags_qualifier(Client, Channel_UserModes(Chan, c),
- flags, sizeof(flags));
- if (!write_whoreply(Client, c, Channel_Name(Chan),
- flags))
- return DISCONNECTED;
- count++;
- }
- }
- /* If there are a lot of clients, augment penalty a bit */
- if (count > MAX_RPL_WHO)
- IRC_SetPenalty(Client, 1);
- return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
- Channel_Name(Chan));
- }
- /**
- * Send WHO reply for a "mask target" ("WHO m*sk").
- *
- * @param Client Client requesting the information.
- * @param Mask Mask being requested or NULL for "all" clients.
- * @param OnlyOps Only display IRC operators.
- * @return CONNECTED or DISCONNECTED.
- */
- static bool
- IRC_WHO_Mask(CLIENT *Client, char *Mask, bool OnlyOps)
- {
- CLIENT *c;
- CL2CHAN *cl2chan;
- CHANNEL *chan;
- bool client_match, is_visible;
- char flags[4];
- int count = 0;
- assert (Client != NULL);
- if (Mask)
- ngt_LowerStr(Mask);
- IRC_SetPenalty(Client, 3);
- for (c = Client_First(); c != NULL; c = Client_Next(c)) {
- if (Client_Type(c) != CLIENT_USER)
- continue;
- if (OnlyOps && !Client_HasMode(c, 'o'))
- continue;
- if (Mask) {
- /* Match pattern against user host/server/name/nick */
- client_match = MatchCaseInsensitive(Mask,
- Client_HostnameDisplayed(c));
- if (!client_match)
- client_match = MatchCaseInsensitive(Mask,
- Client_ID(Client_Introducer(c)));
- if (!client_match)
- client_match = MatchCaseInsensitive(Mask,
- Client_Info(c));
- if (!client_match)
- client_match = MatchCaseInsensitive(Mask,
- Client_ID(c));
- if (!client_match)
- continue; /* no match: skip this client */
- }
- is_visible = !Client_HasMode(c, 'i');
- /* Target client is invisible, but mask matches exactly? */
- if (!is_visible && Mask && strcasecmp(Client_ID(c), Mask) == 0)
- is_visible = true;
- /* Target still invisible, but are both on the same channel? */
- if (!is_visible) {
- cl2chan = Channel_FirstChannelOf(Client);
- while (cl2chan && !is_visible) {
- chan = Channel_GetChannel(cl2chan);
- if (Channel_IsMemberOf(chan, c))
- is_visible = true;
- cl2chan = Channel_NextChannelOf(Client, cl2chan);
- }
- }
- if (!is_visible) /* target user is not visible */
- continue;
- if (IRC_CheckListTooBig(Client, count, MAX_RPL_WHO, "WHO"))
- break;
- strlcpy(flags, who_flags_status(Client_Modes(c)), sizeof(flags));
- if (strchr(Client_Modes(c), 'o'))
- strlcat(flags, "*", sizeof(flags));
- if (!write_whoreply(Client, c, "*", flags))
- return DISCONNECTED;
- count++;
- }
- return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
- Mask ? Mask : "*");
- }
- /**
- * Handler for the IRC "WHO" command.
- *
- * See RFC 2812, 3.6.1 "Who 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_WHO(CLIENT *Client, REQUEST *Req)
- {
- bool only_ops;
- CHANNEL *chan;
- assert (Client != NULL);
- assert (Req != NULL);
- if (Req->argc > 2)
- return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
- Client_ID(Client), Req->command);
- only_ops = false;
- 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);
- #endif
- }
- IRC_SetPenalty(Client, 1);
- if (Req->argc >= 1) {
- /* Channel or mask given */
- chan = Channel_Search(Req->argv[0]);
- if (chan) {
- /* Members of a channel have been requested */
- return IRC_WHO_Channel(Client, chan, only_ops);
- }
- if (strcmp(Req->argv[0], "0") != 0) {
- /* A mask has been given. But please note this RFC
- * stupidity: "0" is same as no arguments ... */
- return IRC_WHO_Mask(Client, Req->argv[0], only_ops);
- }
- }
- /* No channel or (valid) mask given */
- IRC_SetPenalty(Client, 2);
- return IRC_WHO_Mask(Client, NULL, only_ops);
- } /* IRC_WHO */
- /**
- * 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.
- * @return CONNECTED or DISCONNECTED.
- */
- static bool
- IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
- {
- char str[LINE_LEN + 1];
- CL2CHAN *cl2chan;
- CHANNEL *chan;
- assert(Client != NULL);
- assert(from != NULL);
- assert(c != NULL);
- /* Nick, user, hostname and client info */
- if (!IRC_WriteStrClient(from, RPL_WHOISUSER_MSG, Client_ID(from),
- Client_ID(c), Client_User(c),
- Client_HostnameDisplayed(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;
- /* 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);
- /* next */
- cl2chan = Channel_NextChannelOf(c, cl2chan);
- /* Secret channel? */
- 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));
- who_flags_qualifier(Client, Channel_UserModes(chan, c),
- str, 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(str[strlen(str) - 1] != ':') {
- /* There is data left to send: */
- if (!IRC_WriteStrClient(Client, "%s", str))
- return DISCONNECTED;
- }
- /* IRC-Operator? */
- if (Client_HasMode(c, 'o') &&
- !IRC_WriteStrClient(from, RPL_WHOISOPERATOR_MSG,
- Client_ID(from), Client_ID(c)))
- return DISCONNECTED;
- /* IRC-Bot? */
- if (Client_HasMode(c, 'B') &&
- !IRC_WriteStrClient(from, RPL_WHOISBOT_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;
- /* Registered nickname? */
- if (Client_HasMode(c, 'R') &&
- !IRC_WriteStrClient(from, RPL_WHOISREGNICK_MSG,
- Client_ID(from), Client_ID(c)))
- return DISCONNECTED;
- /* Local client and requester is the user itself or an IRC Op? */
- if (Client_Conn(c) > NONE &&
- (from == c || (!Conf_MorePrivacy && Client_HasMode(from, 'o')))) {
- /* Client hostname */
- if (!IRC_WriteStrClient(from, RPL_WHOISHOST_MSG,
- Client_ID(from), Client_ID(c), Client_Hostname(c),
- Conn_GetIPAInfo(Client_Conn(c))))
- return DISCONNECTED;
- /* Client modes */
- if (!IRC_WriteStrClient(from, RPL_WHOISMODES_MSG,
- Client_ID(from), Client_ID(c), Client_Modes(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;
- /* Away? */
- if (Client_HasMode(c, 'a') &&
- !IRC_WriteStrClient(from, RPL_AWAY_MSG,
- Client_ID(from), Client_ID(c), Client_Away(c)))
- return DISCONNECTED;
- return CONNECTED;
- } /* 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;
- char mask[COMMAND_LEN], *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
- * nickname 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);
- /* 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;
- strlcpy(mask, Req->argv[Req->argc - 1], sizeof(mask));
- for (query = strtok(ngt_LowerStr(mask), ",");
- query && found < 3;
- query = strtok(NULL, ","), found++)
- {
- 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 MAX_RPL_WHOIS matches are returned.
- */
- if (!has_wildcards || is_remote) {
- c = Client_Search(query);
- if (c && Client_Type(c) == CLIENT_USER) {
- 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; c = Client_Next(c)) {
- if (IRC_CheckListTooBig(Client, match_count,
- MAX_RPL_WHOIS, "WHOIS"))
- break;
- 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++;
- }
- if (match_count == 0)
- IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
- Client_ID(Client),
- Req->argv[Req->argc - 1]);
- }
- return IRC_WriteStrClient(from, RPL_ENDOFWHOIS_MSG,
- Client_ID(from), Req->argv[Req->argc - 1]);
- } /* 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 );
- /* 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);
- /* 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 = DEF_RPL_WHOWAS;
- if (Req->argc > 1) {
- max = atoi(Req->argv[1]);
- if (max < 1)
- max = MAX_RPL_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)
- {
- unsigned long cnt;
- #ifndef STRICT_RFC
- unsigned long max;
- #endif
- 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;
- /* Number of IRC operators */
- cnt = Client_OperCount( );
- 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;
- }
- /* Number of created channels */
- if (!IRC_WriteStrClient(Client, RPL_LUSERCHANNELS_MSG,
- Client_ID(Client),
- Channel_CountVisible(Client)))
- 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;
- #ifndef STRICT_RFC
- /* Maximum number of local users */
- 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 */
- 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)
- {
- if (!IRC_WriteStrClient(Client, RPL_ENDOFMOTD_MSG, Client_ID(Client)))
- return DISCONNECTED;
- if (*Conf_CloakHost)
- return IRC_WriteStrClient(Client, RPL_HOSTHIDDEN_MSG,
- Client_ID(Client),
- Client_Hostname(Client));
- return CONNECTED;
- }
- #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 )
- {
- const char *line;
- size_t len_tot, len_str;
- assert( Client != NULL );
- 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));
- if (!Show_MOTD_Start(Client))
- return DISCONNECTED;
- line = array_start(&Conf_Motd);
- while (len_tot > 0) {
- len_str = strlen(line) + 1;
- assert(len_tot >= len_str);
- len_tot -= len_str;
- if (!Show_MOTD_Sendline(Client, line))
- return DISCONNECTED;
- line += len_str;
- }
- if (!Show_MOTD_SSLInfo(Client))
- return DISCONNECTED;
- return Show_MOTD_End(Client);
- } /* IRC_Show_MOTD */
- /**
- * Send NAMES reply for a specific client and channel.
- *
- * @param Client The client requesting the NAMES information.
- * @param Chan The channel
- * @return CONNECTED or DISCONNECTED.
- */
- GLOBAL bool
- IRC_Send_NAMES(CLIENT * Client, CHANNEL * Chan)
- {
- bool is_visible, is_member;
- char str[LINE_LEN + 1];
- CL2CHAN *cl2chan;
- CLIENT *cl;
- assert(Client != NULL);
- assert(Chan != NULL);
- 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;
- snprintf(str, sizeof(str), RPL_NAMREPLY_MSG, Client_ID(Client), "=",
- Channel_Name(Chan));
- cl2chan = Channel_FirstMember(Chan);
- while (cl2chan) {
- cl = Channel_GetClient(cl2chan);
- if (strchr(Client_Modes(cl), 'i'))
- is_visible = false;
- else
- is_visible = true;
- if (is_member || is_visible) {
- if (str[strlen(str) - 1] != ':')
- strlcat(str, " ", sizeof(str));
- who_flags_qualifier(Client, Channel_UserModes(Chan, cl),
- str, sizeof(str));
- strlcat(str, Client_ID(cl), sizeof(str));
- if (strlen(str) > (LINE_LEN - CLIENT_NICK_LEN - 4)) {
- if (!IRC_WriteStrClient(Client, "%s", str))
- return DISCONNECTED;
- snprintf(str, sizeof(str), RPL_NAMREPLY_MSG,
- Client_ID(Client), "=",
- Channel_Name(Chan));
- }
- }
- cl2chan = Channel_NextMember(Chan, cl2chan);
- }
- if (str[strlen(str) - 1] != ':') {
- if (!IRC_WriteStrClient(Client, "%s", str))
- return DISCONNECTED;
- }
- return CONNECTED;
- } /* IRC_Send_NAMES */
- /**
- * Send the ISUPPORT numeric (005).
- * This numeric indicates the features that are supported by this server.
- * See <http://www.irc.org/tech_docs/005.html> for details.
- */
- GLOBAL bool
- IRC_Send_ISUPPORT(CLIENT * Client)
- {
- 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, MAX_HNDL_MODES_ARG,
- MAX_HNDL_CHANNEL_LISTS);
- } /* IRC_Send_ISUPPORT */
- /* -eof- */
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