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 1.54 2005/04/16 09:31:30 fw 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 #ifndef LOG_CONS	/* Kludge: mips-dec-ultrix4.5 has no LOG_CONS/LOG_LOCAL5 */
62 #define LOG_CONS 0
63 #endif
64 #ifndef LOG_LOCAL5
65 #define LOG_LOCAL5 0
66 #endif
67 	/* Syslog initialisieren */
68 	openlog( PACKAGE_NAME, LOG_CONS|LOG_PID, LOG_LOCAL5 );
69 #endif
70 
71 	/* Hello World! */
72 	Log( LOG_NOTICE, "%s started.", NGIRCd_Version );
73 	  
74 	/* Informationen uebern den "Operation Mode" */
75 	Init_Txt[0] = '\0';
76 #ifdef DEBUG
77 	if( NGIRCd_Debug )
78 	{
79 		strcpy( Init_Txt, "debug-mode" );
80 	}
81 #endif
82 	if( NGIRCd_NoDaemon )
83 	{
84 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
85 		strcat( Init_Txt, "no-daemon-mode" );
86 	}
87 	if( NGIRCd_Passive )
88 	{
89 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
90 		strcat( Init_Txt, "passive-mode" );
91 	}
92 #ifdef SNIFFER
93 	if( NGIRCd_Sniffer )
94 	{
95 		if( Init_Txt[0] ) strcat( Init_Txt, ", " );
96 		strcat( Init_Txt, "network sniffer" );
97 	}
98 #endif
99 	if( Init_Txt[0] ) Log( LOG_INFO, "Activating: %s.", Init_Txt );
100 
101 #ifdef DEBUG
102 	Error_File[0] = '\0';
103 #endif
104 } /* Log_Init */
105 
106 
107 #ifdef DEBUG
108 
109 GLOBAL void
110 Log_InitErrorfile( void )
111 {
112 	/* "Error-Log" initialisieren: stderr in Datei umlenken. Dort
113 	 * landen z.B. alle Ausgaben von assert()-Aufrufen. */
114 
115 	/* Dateiname zusammen bauen */
116 	sprintf( Error_File, "%s/%s-%ld.err", ERROR_DIR, PACKAGE_NAME, (long)getpid( ));
117 
118 	/* stderr umlenken */
119 	fflush( stderr );
120 	if( ! freopen( Error_File, "w", stderr ))
121 	{
122 		Log( LOG_ERR, "Can't reopen stderr (\"%s\"): %s", Error_File, strerror( errno ));
123 		return;
124 	}
125 
126 	/* Einige Infos in das Error-File schreiben */
127 	fputs( ctime( &NGIRCd_Start ), stderr );
128 	fprintf( stderr, "%s started.\n", NGIRCd_Version );
129 	fprintf( stderr, "Activating: %s\n\n", Init_Txt[0] ? Init_Txt : "-" );
130 	fflush( stderr );
131 
132 	Log( LOG_DEBUG, "Redirected stderr to \"%s\".", Error_File );
133 } /* Log_InitErrfile */
134 
135 #endif
136 
137 
138 GLOBAL void
139 Log_Exit( void )
140 {
141 	/* Good Bye! */
142 	if( NGIRCd_SignalRestart ) Log( LOG_NOTICE, "%s done (restarting).", PACKAGE_NAME );
143 	else Log( LOG_NOTICE, "%s done.", PACKAGE_NAME );
144 
145 #ifdef DEBUG
146 	if( Error_File[0] )
147 	{
148 		/* Error-File (stderr) loeschen */
149 		if( unlink( Error_File ) != 0 ) Log( LOG_ERR, "Can't delete \"%s\": %s", Error_File, strerror( errno ));
150 	}
151 #endif
152 
153 #ifdef SYSLOG
154 	/* syslog abmelden */
155 	closelog( );
156 #endif
157 } /* Log_Exit */
158 
159 
160 #ifdef PROTOTYPES
161 GLOBAL void
162 Log( int Level, const char *Format, ... )
163 #else
164 GLOBAL void
165 Log( Level, Format, va_alist )
166 int Level;
167 const char *Format;
168 va_dcl
169 #endif
170 {
171 	/* Eintrag in Logfile(s) schreiben */
172 
173 	char msg[MAX_LOG_MSG_LEN];
174 	bool snotice;
175 	va_list ap;
176 
177 	assert( Format != NULL );
178 
179 	if( Level & LOG_snotice )
180 	{
181 		/* Notice an User mit "s" Mode */
182 		snotice = true;
183 		Level &= ~LOG_snotice;
184 	}
185 	else snotice = false;
186 
187 #ifdef DEBUG
188 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
189 #else
190 	if( Level == LOG_DEBUG ) return;
191 #endif
192 
193 	/* String mit variablen Argumenten zusammenbauen ... */
194 #ifdef PROTOTYPES
195 	va_start( ap, Format );
196 #else
197 	va_start( ap );
198 #endif
199 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
200 	va_end( ap );
201 
202 	if( NGIRCd_NoDaemon )
203 	{
204 		/* auf Konsole ausgeben */
205 		fprintf( stdout, "[%d:%d] %s\n", (int)getpid( ), Level, msg );
206 		fflush( stdout );
207 	}
208 #ifdef SYSLOG
209 	else
210 	{
211 		/* Syslog */
212 		syslog( Level, "%s", msg );
213 	}
214 #endif
215 
216 	if( Level <= LOG_CRIT )
217 	{
218 		/* log critical messages to stderr */
219 		fprintf( stderr, "%s\n", msg );
220 		fflush( stderr );
221 	}
222 
223 	if( snotice )
224 	{
225 		/* NOTICE an lokale User mit "s"-Mode */
226 		Wall_ServerNotice( msg );
227 	}
228 } /* Log */
229 
230 
231 GLOBAL void
232 Log_Init_Resolver( void )
233 {
234 #ifdef SYSLOG
235 	openlog( PACKAGE_NAME, LOG_CONS|LOG_PID, LOG_LOCAL5 );
236 #endif
237 	Log_Resolver( LOG_DEBUG, "Resolver sub-process starting, PID %d.", getpid( ));
238 } /* Log_Init_Resolver */
239 
240 
241 GLOBAL void
242 Log_Exit_Resolver( void )
243 {
244 	Log_Resolver( LOG_DEBUG, "Resolver sub-process %d done.", getpid( ));
245 #ifdef SYSLOG
246 	closelog( );
247 #endif
248 } /* Log_Exit_Resolver */
249 
250 
251 #ifdef PROTOTYPES
252 GLOBAL void
253 Log_Resolver( const int Level, const char *Format, ... )
254 #else
255 GLOBAL void
256 Log_Resolver( Level, Format, va_alist )
257 const int Level;
258 const char *Format;
259 va_dcl
260 #endif
261 {
262 	/* Eintrag des Resolver in Logfile(s) schreiben */
263 
264 	char msg[MAX_LOG_MSG_LEN];
265 	va_list ap;
266 
267 	assert( Format != NULL );
268 
269 #ifdef DEBUG
270 	if(( Level == LOG_DEBUG ) && ( ! NGIRCd_Debug )) return;
271 #else
272 	if( Level == LOG_DEBUG ) return;
273 #endif
274 
275 	/* String mit variablen Argumenten zusammenbauen ... */
276 #ifdef PROTOTYPES
277 	va_start( ap, Format );
278 #else
279 	va_start( ap );
280 #endif
281 	vsnprintf( msg, MAX_LOG_MSG_LEN, Format, ap );
282 	va_end( ap );
283 
284 	/* Output */
285 	if( NGIRCd_NoDaemon )
286 	{
287 		/* Output to console */
288 		fprintf( stdout, "[%d:%d] %s\n", (int)getpid( ), Level, msg );
289 		fflush( stdout );
290 	}
291 #ifdef SYSLOG
292 	else syslog( Level, "%s", msg );
293 #endif
294 } /* Log_Resolver */
295 
296 
297 LOCAL void
298 Wall_ServerNotice( char *Msg )
299 {
300 	/* Server-Notice an entsprechende User verschicken */
301 
302 	CLIENT *c;
303 
304 	assert( Msg != NULL );
305 
306 	c = Client_First( );
307 	while( c )
308 	{
309 		if(( Client_Conn( c ) > NONE ) && ( Client_HasMode( c, 's' ))) IRC_WriteStrClient( c, "NOTICE %s :%s%s", Client_ThisServer( ), NOTICE_TXTPREFIX, Msg );
310 		c = Client_Next( c );
311 	}
312 } /* Wall_ServerNotice */
313 
314 
315 /* -eof- */