syslog.c revision 290001 
1/*
2 * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 2001-2003  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: syslog.c,v 1.10 2007/06/19 23:47:19 tbox Exp $ */
19
20#include <config.h>
21
22#include <stdio.h>
23#include <windows.h>
24#include <string.h>
25#include <stdlib.h>
26#include <syslog.h>
27
28#include <isc/bindevt.h>
29#include <isc/result.h>
30#include <isc/syslog.h>
31#include <isc/util.h>
32
33static HANDLE hAppLog = NULL;
34static FILE *log_stream;
35static int debug_level = 0;
36
37static struct dsn_c_pvt_sfnt {
38	int val;
39	const char *strval;
40} facilities[] = {
41	{ LOG_KERN,		"kern" },
42	{ LOG_USER,		"user" },
43	{ LOG_MAIL,		"mail" },
44	{ LOG_DAEMON,		"daemon" },
45	{ LOG_AUTH,		"auth" },
46	{ LOG_SYSLOG,		"syslog" },
47	{ LOG_LPR,		"lpr" },
48#ifdef LOG_NEWS
49	{ LOG_NEWS,		"news" },
50#endif
51#ifdef LOG_UUCP
52	{ LOG_UUCP,		"uucp" },
53#endif
54#ifdef LOG_CRON
55	{ LOG_CRON,		"cron" },
56#endif
57#ifdef LOG_AUTHPRIV
58	{ LOG_AUTHPRIV,		"authpriv" },
59#endif
60#ifdef LOG_FTP
61	{ LOG_FTP,		"ftp" },
62#endif
63	{ LOG_LOCAL0,		"local0"},
64	{ LOG_LOCAL1,		"local1"},
65	{ LOG_LOCAL2,		"local2"},
66	{ LOG_LOCAL3,		"local3"},
67	{ LOG_LOCAL4,		"local4"},
68	{ LOG_LOCAL5,		"local5"},
69	{ LOG_LOCAL6,		"local6"},
70	{ LOG_LOCAL7,		"local7"},
71	{ 0,			NULL }
72};
73
74isc_result_t
75isc_syslog_facilityfromstring(const char *str, int *facilityp) {
76	int i;
77
78	REQUIRE(str != NULL);
79	REQUIRE(facilityp != NULL);
80
81	for (i = 0; facilities[i].strval != NULL; i++) {
82		if (strcasecmp(facilities[i].strval, str) == 0) {
83			*facilityp = facilities[i].val;
84			return (ISC_R_SUCCESS);
85		}
86	}
87	return (ISC_R_NOTFOUND);
88}
89
90/*
91 * Log to the NT Event Log
92 */
93void
94syslog(int level, const char *fmt, ...) {
95	va_list ap;
96	char buf[1024];
97	char *str[1];
98
99	str[0] = buf;
100
101	va_start(ap, fmt);
102	vsprintf(buf, fmt, ap);
103	va_end(ap);
104
105	/* Make sure that the channel is open to write the event */
106	if (hAppLog != NULL) {
107		switch (level) {
108		case LOG_INFO:
109		case LOG_NOTICE:
110		case LOG_DEBUG:
111			ReportEvent(hAppLog, EVENTLOG_INFORMATION_TYPE, 0,
112				    BIND_INFO_MSG, NULL, 1, 0, str, NULL);
113			break;
114		case LOG_WARNING:
115			ReportEvent(hAppLog, EVENTLOG_WARNING_TYPE, 0,
116				    BIND_WARN_MSG, NULL, 1, 0, str, NULL);
117			break;
118		default:
119			ReportEvent(hAppLog, EVENTLOG_ERROR_TYPE, 0,
120				    BIND_ERR_MSG, NULL, 1, 0, str, NULL);
121			break;
122		}
123	}
124}
125
126/*
127 * Initialize event logging
128 */
129void
130openlog(const char *name, int flags, ...) {
131	/* Get a handle to the Application event log */
132	hAppLog = RegisterEventSource(NULL, name);
133}
134
135/*
136 * Close the Handle to the application Event Log
137 * We don't care whether or not we succeeded so ignore return values
138 * In fact if we failed then we would have nowhere to put the message
139 */
140void
141closelog() {
142	DeregisterEventSource(hAppLog);
143}
144
145/*
146 * Keep event logging synced with the current debug level
147 */
148void
149ModifyLogLevel(int level) {
150	debug_level = level;
151}
152
153/*
154 * Initialize logging for the port section of libbind.
155 * Piggyback onto stream given.
156 */
157void
158InitNTLogging(FILE *stream, int debug) {
159	log_stream = stream;
160	ModifyLogLevel(debug);
161}
162/*
163 * This function is for reporting errors to the application
164 * event log in case the regular syslog is not available
165 * mainly during startup. It should not be used under normal
166 * circumstances.
167 */
168void
169NTReportError(const char *name, const char *str) {
170	HANDLE hNTAppLog = NULL;
171	const char *buf[1];
172
173	buf[0] = str;
174
175	hNTAppLog = RegisterEventSource(NULL, name);
176
177	ReportEvent(hNTAppLog, EVENTLOG_ERROR_TYPE, 0,
178		    BIND_ERR_MSG, NULL, 1, 0, buf, NULL);
179
180	DeregisterEventSource(hNTAppLog);
181}
182