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1 /* $OpenLDAP$ */
2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
3  *
4  * Copyright 2002-2015 The OpenLDAP Foundation.
5  * Portions Copyright 1997,2002-2003 IBM Corporation.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted only as authorized by the OpenLDAP
10  * Public License.
11  *
12  * A copy of this license is available in the file LICENSE in the
13  * top-level directory of the distribution or, alternatively, at
14  * <http://www.OpenLDAP.org/license.html>.
15  */
16 /* ACKNOWLEDGEMENTS:
17  * This work was initially developed by IBM Corporation for use in
18  * IBM products and subsequently ported to OpenLDAP Software by
19  * Steve Omrani.
20  */
21
22 #include <portable.h>
23 #include <stdio.h>
24 #include <ac/string.h>
25 #include <ac/stdarg.h>
26 #include <ac/unistd.h>
27 #include <fcntl.h>
28 #include <ac/errno.h>
29
30 #include <ldap.h>
31 #include <ldap_config.h>
32 #include <slap.h>
33 #include <slapi.h>
34
35 #include <ldap_pvt_thread.h>
36
37 /* Single threads access to routine */
38 ldap_pvt_thread_mutex_t slapi_printmessage_mutex; 
39 char                    *slapi_log_file = NULL;
40 int                     slapi_log_level = SLAPI_LOG_PLUGIN;
41
42 int 
43 slapi_int_log_error(
44         int             level,  
45         char            *subsystem, 
46         char            *fmt, 
47         va_list         arglist ) 
48 {
49         int             rc = 0;
50         FILE            *fp = NULL;
51
52         char            timeStr[100];
53         struct tm       *ltm;
54         time_t          currentTime;
55
56         assert( subsystem != NULL );
57         assert( fmt != NULL );
58
59         ldap_pvt_thread_mutex_lock( &slapi_printmessage_mutex ) ;
60
61         /* for now, we log all severities */
62         if ( level <= slapi_log_level ) {
63                 fp = fopen( slapi_log_file, "a" );
64                 if ( fp == NULL) {
65                         rc = -1;
66                         goto done;
67                 }
68
69                 /*
70                  * FIXME: could block
71                  */
72                 while ( lockf( fileno( fp ), F_LOCK, 0 ) != 0 ) {
73                         /* DO NOTHING */ ;
74                 }
75
76                 time( &currentTime );
77                 ltm = localtime( &currentTime );
78                 strftime( timeStr, sizeof(timeStr), "%x %X", ltm );
79                 fputs( timeStr, fp );
80
81                 fprintf( fp, " %s: ", subsystem );
82                 vfprintf( fp, fmt, arglist );
83                 if ( fmt[ strlen( fmt ) - 1 ] != '\n' ) {
84                         fputs( "\n", fp );
85                 }
86                 fflush( fp );
87
88                 lockf( fileno( fp ), F_ULOCK, 0 );
89
90                 fclose( fp );
91
92         } else {
93                 rc = -1;
94         }
95
96 done:
97         ldap_pvt_thread_mutex_unlock( &slapi_printmessage_mutex );
98
99         return rc;
100 }