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  * Logging functions
12  */
13 
14 
15 #include "portab.h"
16 
17 static char UNUSED id[] = "$Id: log.c,v 1.52 2005/02/10 12:49:04 alex Exp $";
18 
19 #include "imp.h"
20 #include <assert.h>
21 #include <errno.h>
22 #ifdef PROTOTYPES
23 #	include <stdarg.h>
24 #else
25 #	include <varargs.h>
26 #endif
27 #include <stdio.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <unistd.h>
31 
32 #ifdef SYSLOG
33 #include <syslog.h>
34 #endif
35 
36 #include "ngircd.h"
37 #include "defines.h"
38 #include "conn.h"
39 #include "client.h"
40 #include "channel.h"
41 #include "irc-write.h"
42 
43 #include "exp.h"
44 #include "log.h"
45 
46 
47 LOCAL CHAR Init_Txt[127];
48 
49 #ifdef DEBUG
50 LOCAL CHAR Error_File[FNAME_LEN];
51 #endif
52 
53 
54 LOCAL VOID Wall_ServerNotice PARAMS(( CHAR *Msg ));
55 
56 
57 GLOBAL VOID
58 Log_Init( VOID )
59 {
60 #ifdef SYSLOG
61 	/* Syslog initialisieren */
62 	openlog( PACKAGE_NAME, LOG_CONS|LOG_PID, LOG_LOCAL5 );
63 #endif
64 
65 	/* Hello World! */
66 	Log( LOG_NOTICE, "%s started.", NGIRCd_Version );
67 	  
68 	/* Informationen uebern den "Operation Mode" */
69 	Init_Txt[0] = '\0';
70 #ifdef DEBUG
71 	if( NGIRCd_Debug )
72 	{
73 		strcpy( Init_Txt, "debug-mode" );
74 	}
75 #endif
76 	if( NGIRCd_NoDaemon )
77 	{
78 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
79 		strcat( Init_Txt, "no-daemon-mode" );
80 	}
81 	if( NGIRCd_Passive )
82 	{
83 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
84 		strcat( Init_Txt, "passive-mode" );
85 	}
86 #ifdef SNIFFER
87 	if( NGIRCd_Sniffer )
88 	{
89 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
90 		strcat( Init_Txt, "network sniffer" );
91 	}
92 #endif
93 	if( Init_Txt[0] ) Log( LOG_INFO, "Activating: %s.", Init_Txt );
94 
95 #ifdef DEBUG
96 	Error_File[0] = '\0';
97 #endif
98 } /* Log_Init */
99 
100 
101 #ifdef DEBUG
102 
103 GLOBAL VOID
104 Log_InitErrorfile( VOID )
105 {
106 	/* "Error-Log" initialisieren: stderr in Datei umlenken. Dort
107 	 * landen z.B. alle Ausgaben von assert()-Aufrufen. */
108 
109 	/* Dateiname zusammen bauen */
110 	sprintf( Error_File, "%s/%s-%ld.err", ERROR_DIR, PACKAGE_NAME, (LONG)getpid( ));
111 
112 	/* stderr umlenken */
113 	fflush( stderr );
114 	if( ! freopen( Error_File, "w", stderr ))
115 	{
116 		Log( LOG_ERR, "Can't reopen stderr (\"%s\"): %s", Error_File, strerror( errno ));
117 		return;
118 	}
119 
120 	/* Einige Infos in das Error-File schreiben */
121 	fputs( ctime( &NGIRCd_Start ), stderr );
122 	fprintf( stderr, "%s started.\n", NGIRCd_Version );
123 	fprintf( stderr, "Activating: %s\n\n", Init_Txt[0] ? Init_Txt : "-" );
124 	fflush( stderr );
125 
126 	Log( LOG_DEBUG, "Redirected stderr to \"%s\".", Error_File );
127 } /* Log_InitErrfile */
128 
129 #endif
130 
131 
132 GLOBAL VOID
133 Log_Exit( VOID )
134 {
135 	/* Good Bye! */
136 	if( NGIRCd_SignalRestart ) Log( LOG_NOTICE, "%s done (restarting).", PACKAGE_NAME );
137 	else Log( LOG_NOTICE, "%s done.", PACKAGE_NAME );
138 
139 #ifdef DEBUG
140 	if( Error_File[0] )
141 	{
142 		/* Error-File (stderr) loeschen */
143 		if( unlink( Error_File ) != 0 ) Log( LOG_ERR, "Can't delete \"%s\": %s", Error_File, strerror( errno ));
144 	}
145 #endif
146 
147 #ifdef SYSLOG
148 	/* syslog abmelden */
149 	closelog( );
150 #endif
151 } /* Log_Exit */
152 
153 
154 #ifdef PROTOTYPES
155 GLOBAL VOID
156 Log( INT Level, CONST CHAR *Format, ... )
157 #else
158 GLOBAL VOID
159 Log( Level, Format, va_alist )
160 INT Level;
161 CONST CHAR *Format;
162 va_dcl
163 #endif
164 {
165 	/* Eintrag in Logfile(s) schreiben */
166 
167 	CHAR msg[MAX_LOG_MSG_LEN];
168 	BOOLEAN snotice;
169 	va_list ap;
170 
171 	assert( Format != NULL );
172 
173 	if( Level & LOG_snotice )
174 	{
175 		/* Notice an User mit "s" Mode */
176 		snotice = TRUE;
177 		Level &= ~LOG_snotice;
178 	}
179 	else snotice = FALSE;
180 
181 #ifdef DEBUG
182 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
183 #else
184 	if( Level == LOG_DEBUG ) return;
185 #endif
186 
187 	/* String mit variablen Argumenten zusammenbauen ... */
188 #ifdef PROTOTYPES
189 	va_start( ap, Format );
190 #else
191 	va_start( ap );
192 #endif
193 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
194 	va_end( ap );
195 
196 	if( NGIRCd_NoDaemon )
197 	{
198 		/* auf Konsole ausgeben */
199 		fprintf( stdout, "[%d:%d] %s\n", (INT)getpid( ), Level, msg );
200 		fflush( stdout );
201 	}
202 #ifdef SYSLOG
203 	else
204 	{
205 		/* Syslog */
206 		syslog( Level, "%s", msg );
207 	}
208 #endif
209 
210 	if( Level <= LOG_CRIT )
211 	{
212 		/* log critical messages to stderr */
213 		fprintf( stderr, "%s\n", msg );
214 		fflush( stderr );
215 	}
216 
217 	if( snotice )
218 	{
219 		/* NOTICE an lokale User mit "s"-Mode */
220 		Wall_ServerNotice( msg );
221 	}
222 } /* Log */
223 
224 
225 GLOBAL VOID
226 Log_Init_Resolver( VOID )
227 {
228 #ifdef SYSLOG
229 	openlog( PACKAGE_NAME, LOG_CONS|LOG_PID, LOG_LOCAL5 );
230 #endif
231 	Log_Resolver( LOG_DEBUG, "Resolver sub-process starting, PID %d.", getpid( ));
232 } /* Log_Init_Resolver */
233 
234 
235 GLOBAL VOID
236 Log_Exit_Resolver( VOID )
237 {
238 	Log_Resolver( LOG_DEBUG, "Resolver sub-process %d done.", getpid( ));
239 #ifdef SYSLOG
240 	closelog( );
241 #endif
242 } /* Log_Exit_Resolver */
243 
244 
245 #ifdef PROTOTYPES
246 GLOBAL VOID
247 Log_Resolver( CONST INT Level, CONST CHAR *Format, ... )
248 #else
249 GLOBAL VOID
250 Log_Resolver( Level, Format, va_alist )
251 CONST INT Level;
252 CONST CHAR *Format;
253 va_dcl
254 #endif
255 {
256 	/* Eintrag des Resolver in Logfile(s) schreiben */
257 
258 	CHAR msg[MAX_LOG_MSG_LEN];
259 	va_list ap;
260 
261 	assert( Format != NULL );
262 
263 #ifdef DEBUG
264 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
265 #else
266 	if( Level == LOG_DEBUG ) return;
267 #endif
268 
269 	/* String mit variablen Argumenten zusammenbauen ... */
270 #ifdef PROTOTYPES
271 	va_start( ap, Format );
272 #else
273 	va_start( ap );
274 #endif
275 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
276 	va_end( ap );
277 
278 	/* Output */
279 	if( NGIRCd_NoDaemon )
280 	{
281 		/* Output to console */
282 		fprintf( stdout, "[%d:%d] %s\n", (INT)getpid( ), Level, msg );
283 		fflush( stdout );
284 	}
285 #ifdef SYSLOG
286 	else syslog( Level, "%s", msg );
287 #endif
288 } /* Log_Resolver */
289 
290 
291 LOCAL VOID
292 Wall_ServerNotice( CHAR *Msg )
293 {
294 	/* Server-Notice an entsprechende User verschicken */
295 
296 	CLIENT *c;
297 
298 	assert( Msg != NULL );
299 
300 	c = Client_First( );
301 	while( c )
302 	{
303 		if(( Client_Conn( c ) > NONE ) && ( Client_HasMode( c, 's' ))) IRC_WriteStrClient( c, "NOTICE %s :%s%s", Client_ThisServer( ), NOTICE_TXTPREFIX, Msg );
304 		c = Client_Next( c );
305 	}
306 } /* Wall_ServerNotice */
307 
308 
309 /* -eof- */