1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  * Please read the file COPYING, README and AUTHORS for more information.
10  *
11  * IRC commands
12  */
13 
14 
15 #include "portab.h"
16 
17 static char UNUSED id[] = "$Id: irc.c,v 1.117 2003/01/13 18:56:30 alex Exp $";
18 
19 #include "imp.h"
20 #include <assert.h>
21 #include <stdio.h>
22 #include <string.h>
23 
24 #include "ngircd.h"
25 #include "conn.h"
26 #include "resolve.h"
27 #include "conf.h"
28 #include "conn-func.h"
29 #include "client.h"
30 #include "channel.h"
31 #include "defines.h"
32 #include "irc-write.h"
33 #include "log.h"
34 #include "messages.h"
35 #include "parse.h"
36 
37 #include "exp.h"
38 #include "irc.h"
39 
40 
41 GLOBAL BOOLEAN
42 IRC_ERROR( CLIENT *Client, REQUEST *Req )
43 {
44 	assert( Client != NULL );
45 	assert( Req != NULL );
46 
47 	if( Req->argc < 1 ) Log( LOG_NOTICE, "Got ERROR from \"%s\"!", Client_Mask( Client ));
48 	else Log( LOG_NOTICE, "Got ERROR from \"%s\": %s!", Client_Mask( Client ), Req->argv[0] );
49 
50 	return CONNECTED;
51 } /* IRC_ERROR */
52 
53 
54 GLOBAL BOOLEAN
55 IRC_KILL( CLIENT *Client, REQUEST *Req )
56 {
57 	CLIENT *prefix, *c;
58 	CHAR reason[COMMAND_LEN];
59 	CONN_ID my_conn, conn;
60 
61 	assert( Client != NULL );
62 	assert( Req != NULL );
63 
64 	/* Is the user an IRC operator? */
65 	if(( Client_Type( Client ) != CLIENT_SERVER ) && ( ! Client_OperByMe( Client ))) return IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
66 
67 	/* Bad number of parameters? */
68 	if(( Req->argc != 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
69 
70 	if( Req->prefix ) prefix = Client_Search( Req->prefix );
71 	else prefix = Client;
72 	if( ! prefix )
73 	{
74 		Log( LOG_WARNING, "Got KILL with invalid prefix: \"%s\"!", Req->prefix );
75 		prefix = Client_ThisServer( );
76 	}
77 
78 	if( Client != Client_ThisServer( )) Log( LOG_NOTICE|LOG_snotice, "Got KILL command from \"%s\" for \"%s\": %s", Client_Mask( prefix ), Req->argv[0], Req->argv[1] );
79 
80 	/* Build reason string */
81 	if( Client_Type( Client ) == CLIENT_USER ) snprintf( reason, sizeof( reason ), "KILLed by %s: %s", Client_ID( Client ), Req->argv[1] );
82 	else strlcpy( reason, Req->argv[1], sizeof( reason ));
83 
84 	/* Inform other servers */
85 	IRC_WriteStrServersPrefix( Client, prefix, "KILL %s :%s", Req->argv[0], reason );
86 
87 	/* Save ID of this connection */
88 	my_conn = Client_Conn( Client );
89 	
90 	/* Do we host such a client? */
91 	c = Client_Search( Req->argv[0] );
92 	if( c )
93 	{
94 		/* Yes, there is such a client -- but is it a valid user? */
95 		if( Client_Type( c ) == CLIENT_SERVER ) IRC_WriteStrClient( Client, ERR_CANTKILLSERVER_MSG, Client_ID( Client ));
96 		else if( Client_Type( c ) != CLIENT_USER  )IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
97 		else
98 		{
99 			/* Kill user NOW! */
100 			conn = Client_Conn( c );
101 			Client_Destroy( c, NULL, reason, FALSE );
102 			if( conn != NONE ) Conn_Close( conn, NULL, reason, TRUE );
103 		}
104 	}
105 	else Log( LOG_NOTICE, "Client with nick \"%s\" is unknown here.", Req->argv[0] );
106 
107 	/* Are we still connected or were we killed, too? */
108 	if(( my_conn > NONE ) && ( Client_GetFromConn( my_conn ))) return CONNECTED;
109 	else return DISCONNECTED;
110 } /* IRC_KILL */
111 
112 
113 GLOBAL BOOLEAN
114 IRC_NOTICE( CLIENT *Client, REQUEST *Req )
115 {
116 	CLIENT *to, *from;
117 
118 	assert( Client != NULL );
119 	assert( Req != NULL );
120 
121 	if(( Client_Type( Client ) != CLIENT_USER ) && ( Client_Type( Client ) != CLIENT_SERVER )) return CONNECTED;
122 
123 	/* Falsche Anzahl Parameter? */
124 	if( Req->argc != 2 ) return CONNECTED;
125 
126 	if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
127 	else from = Client;
128 	if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
129 
130 	to = Client_Search( Req->argv[0] );
131 	if(( to ) && ( Client_Type( to ) == CLIENT_USER ))
132 	{
133 		/* Okay, Ziel ist ein User */
134 		return IRC_WriteStrClientPrefix( to, from, "NOTICE %s :%s", Client_ID( to ), Req->argv[1] );
135 	}
136 	else return CONNECTED;
137 } /* IRC_NOTICE */
138 
139 
140 GLOBAL BOOLEAN
141 IRC_PRIVMSG( CLIENT *Client, REQUEST *Req )
142 {
143 	CLIENT *cl, *from;
144 	CHANNEL *chan;
145 	
146 	assert( Client != NULL );
147 	assert( Req != NULL );
148 
149 	/* Falsche Anzahl Parameter? */
150 	if( Req->argc == 0 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
151 	if( Req->argc == 1 ) return IRC_WriteStrClient( Client, ERR_NOTEXTTOSEND_MSG, Client_ID( Client ));
152 	if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
153 
154 	if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
155 	else from = Client;
156 	if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
157 
158 	cl = Client_Search( Req->argv[0] );
159 	if( cl )
160 	{
161 		/* Okay, Ziel ist ein Client. Aber ist es auch ein User? */
162 		if( Client_Type( cl ) != CLIENT_USER ) return IRC_WriteStrClient( from, ERR_NOSUCHNICK_MSG, Client_ID( from ), Req->argv[0] );
163 
164 		/* Okay, Ziel ist ein User */
165 		if(( Client_Type( Client ) != CLIENT_SERVER ) && ( strchr( Client_Modes( cl ), 'a' )))
166 		{
167 			/* Ziel-User ist AWAY: Meldung verschicken */
168 			if( ! IRC_WriteStrClient( from, RPL_AWAY_MSG, Client_ID( from ), Client_ID( cl ), Client_Away( cl ))) return DISCONNECTED;
169 		}
170 
171 		/* Text senden */
172 		if( Client_Conn( from ) > NONE ) Conn_UpdateIdle( Client_Conn( from ));
173 		return IRC_WriteStrClientPrefix( cl, from, "PRIVMSG %s :%s", Client_ID( cl ), Req->argv[1] );
174 	}
175 
176 	chan = Channel_Search( Req->argv[0] );
177 	if( chan ) return Channel_Write( chan, from, Client, Req->argv[1] );
178 
179 	return IRC_WriteStrClient( from, ERR_NOSUCHNICK_MSG, Client_ID( from ), Req->argv[0] );
180 } /* IRC_PRIVMSG */
181 
182 
183 GLOBAL BOOLEAN
184 IRC_TRACE( CLIENT *Client, REQUEST *Req )
185 {
186 	CLIENT *from, *target;
187 	CONN_ID idx, idx2;
188 	CHAR ver[64], *ptr;
189 
190 	assert( Client != NULL );
191 	assert( Req != NULL );
192 
193 	/* Bad number of arguments? */
194 	if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );
195 
196 	/* Search sender */
197 	if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
198 	else from = Client;
199 	if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
200 
201 	/* Search target */
202 	if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
203 	else target = Client_ThisServer( );
204 	
205 	strlcpy( ver, NGIRCd_VersionAddition( ), sizeof( ver ));
206 	ptr = strchr( ver, '-' );
207 	if( ptr ) *ptr = '\0';
208 
209 	/* Forward command to other server? */
210 	if( target != Client_ThisServer( ))
211 	{
212 		if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
213 
214 		/* Send RPL_TRACELINK back to initiator */
215 		idx = Client_Conn( Client ); assert( idx > NONE );
216 		idx2 = Client_Conn( Client_NextHop( target )); assert( idx2 > NONE );
217 		if( ! IRC_WriteStrClient( from, RPL_TRACELINK_MSG, Client_ID( from ), PACKAGE, VERSION, Client_ID( target ), Client_ID( Client_NextHop( target )), ver, time( NULL ) - Conn_StartTime( idx ), Conn_SendQ( idx ), Conn_SendQ( idx2 ))) return DISCONNECTED;
218 
219 		/* Forward command */
220 		IRC_WriteStrClientPrefix( target, from, "TRACE %s", Req->argv[0] );
221 		return CONNECTED;
222 	}
223 
224 	if( ! IRC_WriteStrClient( from, RPL_TRACESERVER_MSG, Client_ID( from ), Conf_ServerName, Client_Mask( Client_ThisServer( )), ver )) return DISCONNECTED;
225 	return IRC_WriteStrClient( from, RPL_TRACEEND_MSG, Client_ID( from ), Conf_ServerName, PACKAGE, VERSION, NGIRCd_DebugLevel );
226 } /* IRC_TRACE */
227 
228 
229 /* -eof- */