1 /*
2 * SysDB - src/plugins/syslog.c
3 * Copyright (C) 2013, 2015 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #include "sysdb.h"
29 #include "core/plugin.h"
30 #include "utils/error.h"
32 #include "liboconfig/utils.h"
34 #include <assert.h>
35 #include <strings.h>
36 #include <syslog.h>
38 SDB_PLUGIN_MAGIC;
40 #if (SDB_LOG_EMERG != LOG_EMERG) \
41 || (SDB_LOG_ERR != LOG_ERR) \
42 || (SDB_LOG_WARNING != LOG_WARNING) \
43 || (SDB_LOG_NOTICE != LOG_NOTICE) \
44 || (SDB_LOG_INFO != LOG_INFO) \
45 || (SDB_LOG_DEBUG != LOG_DEBUG)
46 # define SDB_LOG_PRIO_TO_SYSLOG(prio) \
47 (((prio) == SDB_LOG_EMERG) ? LOG_EMERG \
48 : ((prio) == SDB_LOG_ERR) ? LOG_ERR \
49 : ((prio) == SDB_LOG_WARNING) ? LOG_WARNING \
50 : ((prio) == SDB_LOG_NOTICE) ? LOG_NOTICE \
51 : ((prio) == SDB_LOG_INFO) ? LOG_INFO \
52 : ((prio) == SDB_LOG_DEBUG) ? LOG_DEBUG : LOG_ERR)
53 #else
54 # define SDB_LOG_PRIO_TO_SYSLOG(prio) (prio)
55 #endif
57 static int loglevel = SDB_DEFAULT_LOGLEVEL;
59 /*
60 * plugin API
61 */
63 static int
64 syslog_log(int prio, const char *msg,
65 sdb_object_t __attribute__((unused)) *user_data)
66 {
67 if (prio > loglevel)
68 return 0;
69 syslog(SDB_LOG_PRIO_TO_SYSLOG(prio), "%s", msg);
70 return 0;
71 } /* syslog_log */
73 static int
74 syslog_shutdown(sdb_object_t __attribute__((unused)) *user_data)
75 {
76 closelog();
77 return 0;
78 } /* syslog_shutdown */
80 static int
81 syslog_config(oconfig_item_t *ci)
82 {
83 int i;
85 if (! ci) {
86 /* reset loglevel on deconfigure */
87 loglevel = SDB_DEFAULT_LOGLEVEL;
88 return 0;
89 }
91 for (i = 0; i < ci->children_num; ++i) {
92 oconfig_item_t *child = ci->children + i;
94 if (! strcasecmp(child->key, "LogLevel")) {
95 char *level = NULL;
96 if (oconfig_get_string(child, &level)) {
97 sdb_log(SDB_LOG_ERR, "LogLevel requires a single string argument\n"
98 "\tUsage: Loglevel LEVEL");
99 return -1;
100 }
101 loglevel = sdb_error_parse_priority(level);
102 if (loglevel < 0) {
103 loglevel = SDB_DEFAULT_LOGLEVEL;
104 sdb_log(SDB_LOG_ERR, "Invalid loglevel: '%s'", level);
105 return -1;
106 }
107 sdb_log(SDB_LOG_INFO, "Log-level set to %s",
108 SDB_LOG_PRIO_TO_STRING(loglevel));
109 }
110 else
111 sdb_log(SDB_LOG_WARNING, "Ignoring unknown config option '%s'.", child->key);
112 }
113 return 0;
114 } /* syslog_config */
116 int
117 sdb_module_init(sdb_plugin_info_t *info)
118 {
119 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_DESC,
120 "log messages to the system logger");
121 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_COPYRIGHT,
122 "Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>");
123 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_LICENSE, "BSD");
124 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_VERSION, SDB_VERSION);
125 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_PLUGIN_VERSION, SDB_VERSION);
127 if (info)
128 openlog("sysdbd", LOG_NDELAY | LOG_NOWAIT | LOG_PID, LOG_DAEMON);
130 sdb_plugin_register_log("main", syslog_log, NULL);
131 sdb_plugin_register_config(syslog_config);
132 sdb_plugin_register_shutdown("main", syslog_shutdown, NULL);
133 return 0;
134 } /* sdb_module_init */
136 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */