Add sss_log() function

Right now, this log function writes to the syslog. In the future,
it could be modified to work with ELAPI or another logging API.

3 files changed, 83 insertions, 1 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index d77c73172..8eea7ac2d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -218,7 +218,8 @@ AM_CPPFLAGS = -Wall \
 EXTRA_DIST = build/config.rpath
 
 SSSD_DEBUG_OBJ = \
-    util/debug.c
+    util/debug.c \
+    util/sss_log.c
 
 SSSD_UTIL_OBJ = \
     confdb/confdb.c \
diff --git a/src/util/sss_log.c b/src/util/sss_log.c
new file mode 100644
index 000000000..45e883109
--- /dev/null
+++ b/src/util/sss_log.c
@@ -0,0 +1,69 @@
+/*
+    SSSD
+
+    sss_log.c
+
+    Authors:
+        Stephen Gallagher <sgallagh@redhat.com>
+
+    Copyright (C) 2010 Red Hat
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "util/util.h"
+#include <syslog.h>
+
+static int sss_to_syslog(int priority)
+{
+    switch(priority) {
+    case SSS_LOG_EMERG:
+        return LOG_EMERG;
+    case SSS_LOG_ALERT:
+        return LOG_ALERT;
+    case SSS_LOG_CRIT:
+        return LOG_CRIT;
+    case SSS_LOG_ERR:
+        return LOG_ERR;
+    case SSS_LOG_WARNING:
+        return LOG_WARNING;
+    case SSS_LOG_NOTICE:
+        return LOG_NOTICE;
+    case SSS_LOG_INFO:
+        return LOG_INFO;
+    case SSS_LOG_DEBUG:
+        return LOG_DEBUG;
+    default:
+        /* If we've been passed an invalid priority, it's
+         * best to assume it's an emergency.
+         */
+        return LOG_EMERG;
+    }
+}
+
+void sss_log(int priority, const char *format, ...)
+{
+    va_list ap;
+    int syslog_priority;
+
+    syslog_priority = sss_to_syslog(priority);
+
+    openlog(debug_prg_name, 0, LOG_DAEMON);
+
+    va_start(ap, format);
+    vsyslog(syslog_priority, format, ap);
+    va_end(ap);
+
+    closelog();
+}
diff --git a/src/util/util.h b/src/util/util.h
index 1277305e2..3c95f7a20 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -212,6 +212,18 @@ int open_debug_file_ex(const char *filename, FILE **filep);
 int open_debug_file(void);
 int rotate_debug_files(void);
 
+/* From sss_log.c */
+#define SSS_LOG_EMERG   0   /* system is unusable */
+#define SSS_LOG_ALERT   1   /* action must be taken immediately */
+#define SSS_LOG_CRIT    2   /* critical conditions */
+#define SSS_LOG_ERR     3   /* error conditions */
+#define SSS_LOG_WARNING 4   /* warning conditions */
+#define SSS_LOG_NOTICE  5   /* normal but significant condition */
+#define SSS_LOG_INFO    6   /* informational */
+#define SSS_LOG_DEBUG   7   /* debug-level messages */
+
+void sss_log(int priority, const char *format, ...);
+
 /* from server.c */
 struct main_context {
     struct tevent_context *event_ctx;