1 /*
2  * ngIRCd -- The Next Generation IRC Daemon
3  * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
4  *
5  * Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
6  * der GNU General Public License (GPL), wie von der Free Software Foundation
7  * herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
8  * der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
9  * Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
10  * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
11  *
12  * $Id: log.c,v 1.40 2002/10/09 16:53:02 alex Exp $
13  *
14  * log.c: Logging-Funktionen
15  */
16 
17 
18 #include "portab.h"
19 
20 #include "imp.h"
21 #include <assert.h>
22 #include <errno.h>
23 #include <stdarg.h>
24 #include <stdio.h>
25 #include <string.h>
26 #include <sys/types.h>
27 #include <unistd.h>
28 
29 #ifdef USE_SYSLOG
30 #include <syslog.h>
31 #endif
32 
33 #include "ngircd.h"
34 #include "defines.h"
35 #include "conn.h"
36 #include "client.h"
37 #include "channel.h"
38 #include "irc-write.h"
39 
40 #include "exp.h"
41 #include "log.h"
42 
43 
44 LOCAL CHAR Error_File[FNAME_LEN];
45 LOCAL CHAR Init_Txt[127];
46 
47 
48 LOCAL VOID Wall_ServerNotice PARAMS(( CHAR *Msg ));
49 
50 
51 GLOBAL VOID
52 Log_Init( VOID )
53 {
54 #ifdef USE_SYSLOG
55 	/* Syslog initialisieren */
56 	openlog( PACKAGE, LOG_CONS|LOG_PID, LOG_LOCAL5 );
57 #endif
58 
59 	/* Hello World! */
60 	Log( LOG_NOTICE, "%s started.", NGIRCd_Version( ));
61 	  
62 	/* Informationen uebern den "Operation Mode" */
63 	strcpy( Init_Txt, "" );
64 #ifdef DEBUG
65 	if( NGIRCd_Debug )
66 	{
67 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
68 		strcat( Init_Txt, "debug-mode" );
69 	}
70 #endif
71 	if( NGIRCd_NoDaemon )
72 	{
73 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
74 		strcat( Init_Txt, "no-daemon-mode" );
75 	}
76 	if( NGIRCd_Passive )
77 	{
78 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
79 		strcat( Init_Txt, "passive-mode" );
80 	}
81 #ifdef SNIFFER
82 	if( NGIRCd_Sniffer )
83 	{
84 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
85 		strcat( Init_Txt, "network sniffer" );
86 	}
87 #endif
88 	if( Init_Txt[0] ) Log( LOG_INFO, "Activating: %s.", Init_Txt );
89 } /* Log_Init */
90 
91 
92 GLOBAL VOID
93 Log_InitErrorfile( VOID )
94 {
95 	/* "Error-Log" initialisieren: stderr in Datei umlenken. Dort
96 	 * landen z.B. alle Ausgaben von assert()-Aufrufen. */
97 
98 	/* Dateiname zusammen bauen */
99 	sprintf( Error_File, "%s/%s-%ld.err", ERROR_DIR, PACKAGE, (LONG)getpid( ));
100 
101 	/* stderr umlenken */
102 	fflush( stderr );
103 	if( ! freopen( Error_File, "w", stderr ))
104 	{
105 		Log( LOG_ERR, "Can't reopen stderr (\"%s\"): %s", Error_File, strerror( errno ));
106 		return;
107 	}
108 
109 	/* Einige Infos in das Error-File schreiben */
110 	fputs( ctime( &NGIRCd_Start ), stderr );
111 	fprintf( stderr, "%s started.\n", NGIRCd_Version( ));
112 	fprintf( stderr, "Activating: %s\n\n", Init_Txt[0] ? Init_Txt : "-" );
113 	fflush( stderr );
114 
115 	Log( LOG_DEBUG, "Redirected stderr to \"%s\".", Error_File );
116 } /* Log_InitErrfile */
117 
118 
119 GLOBAL VOID
120 Log_Exit( VOID )
121 {
122 	/* Good Bye! */
123 	if( NGIRCd_Restart ) Log( LOG_NOTICE, "%s done (restarting).", PACKAGE );
124 	else Log( LOG_NOTICE, "%s done.", PACKAGE );
125 
126 	/* Error-File (stderr) loeschen */
127 	if( unlink( Error_File ) != 0 ) Log( LOG_ERR, "Can't delete \"%s\": %s", Error_File, strerror( errno ));
128 
129 #ifdef USE_SYSLOG
130 	/* syslog abmelden */
131 	closelog( );
132 #endif
133 } /* Log_Exit */
134 
135 
136 #ifdef PROTOTYPES
137 GLOBAL VOID
138 Log( INT Level, CONST CHAR *Format, ... )
139 #else
140 GLOBAL VOID
141 Log( Level, Format, va_alist )
142 INT Level;
143 CONST CHAR *Format;
144 va_dcl
145 #endif
146 {
147 	/* Eintrag in Logfile(s) schreiben */
148 
149 	CHAR msg[MAX_LOG_MSG_LEN];
150 	BOOLEAN snotice;
151 	va_list ap;
152 
153 	assert( Format != NULL );
154 
155 	if( Level & LOG_snotice )
156 	{
157 		/* Notice an User mit "s" Mode */
158 		snotice = TRUE;
159 		Level &= ~LOG_snotice;
160 	}
161 	else snotice = FALSE;
162 
163 #ifdef DEBUG
164 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
165 #else
166 	if( Level == LOG_DEBUG ) return;
167 #endif
168 
169 	/* String mit variablen Argumenten zusammenbauen ... */
170 #ifdef PROTOTYPES
171 	va_start( ap, Format );
172 #else
173 	va_start( ap );
174 #endif
175 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
176 	va_end( ap );
177 
178 	if( NGIRCd_NoDaemon )
179 	{
180 		/* auf Konsole ausgeben */
181 		fprintf( stdout, "[%d] %s\n", Level, msg );
182 		fflush( stdout );
183 	}
184 #ifdef USE_SYSLOG
185 	else
186 	{
187 		/* Syslog */
188 		syslog( Level, "%s", msg );
189 	}
190 #endif
191 
192 	if( Level <= LOG_CRIT )
193 	{
194 		/* Kritische Meldungen in Error-File (stderr) */
195 		fprintf( stderr, "%s\n", msg );
196 		fflush( stderr );
197 	}
198 
199 	if( snotice )
200 	{
201 		/* NOTICE an lokale User mit "s"-Mode */
202 		Wall_ServerNotice( msg );
203 	}
204 } /* Log */
205 
206 
207 GLOBAL VOID
208 Log_Init_Resolver( VOID )
209 {
210 #ifdef USE_SYSLOG
211 	openlog( PACKAGE, LOG_CONS|LOG_PID, LOG_LOCAL5 );
212 #endif
213 } /* Log_Init_Resolver */
214 
215 
216 GLOBAL VOID
217 Log_Exit_Resolver( VOID )
218 {
219 #ifdef USE_SYSLOG
220 	closelog( );
221 #endif
222 } /* Log_Exit_Resolver */
223 
224 
225 #ifdef PROTOTYPES
226 GLOBAL VOID
227 Log_Resolver( CONST INT Level, CONST CHAR *Format, ... )
228 #else
229 GLOBAL VOID
230 Log_Resolver( Level, Format, va_alist )
231 CONST INT Level;
232 CONST CHAR *Format;
233 va_dcl
234 #endif
235 {
236 	/* Eintrag des Resolver in Logfile(s) schreiben */
237 
238 #ifndef USE_SYSLOG
239 	return;
240 #else
241 
242 	CHAR msg[MAX_LOG_MSG_LEN];
243 	va_list ap;
244 
245 	assert( Format != NULL );
246 
247 	if( NGIRCd_NoDaemon ) return;
248 
249 #ifdef DEBUG
250 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
251 #else
252 	if( Level == LOG_DEBUG ) return;
253 #endif
254 
255 	/* String mit variablen Argumenten zusammenbauen ... */
256 #ifdef PROTOTYPES
257 	va_start( ap, Format );
258 #else
259 	va_start( ap );
260 #endif
261 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
262 	va_end( ap );
263 
264 	/* ... und ausgeben */
265 	syslog( Level, msg );
266 
267 #endif
268 } /* Log_Resolver */
269 
270 
271 LOCAL VOID
272 Wall_ServerNotice( CHAR *Msg )
273 {
274 	/* Server-Notice an entsprechende User verschicken */
275 
276 	CLIENT *c;
277 
278 	assert( Msg != NULL );
279 
280 	c = Client_First( );
281 	while( c )
282 	{
283 		if(( Client_Conn( c ) > NONE ) && ( Client_HasMode( c, 's' ))) IRC_WriteStrClient( c, "NOTICE %s :%s%s", Client_ThisServer( ), NOTICE_TXTPREFIX, Msg );
284 		c = Client_Next( c );
285 	}
286 } /* Wall_ServerNotice */
287 
288 
289 /* -eof- */