* Use our own logging mechanism instead of syslog/printf.

1 files changed, 154 insertions, 0 deletions

diff --git a/log.c b/log.c
new file mode 100644
index 0000000..9baa85d
--- /dev/null
+++ b/log.c
@@ -0,0 +1,154 @@
+
+/* 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <time.h>
+
+#include "log.h"
+
+static FILE *log_fp = NULL;
+static int default_log_level = E_WARN;
+int log_level[L_MAX];
+
+char *facility_name[] = {
+	"general",
+	"artwork",
+	"database",
+	"inotify",
+	"scanner",
+	"metadata",
+	"http",
+	"ssdp",
+	0
+};
+
+char *level_name[] = {
+	"off",					// E_OFF
+	"fatal",				// E_FATAL
+	"error",				// E_ERROR
+	"warn",					// E_WARN
+	"info",					// E_INFO
+	"debug",				// E_DEBUG
+	0
+};
+
+int
+log_init(const char *fname, const char *debug)
+{
+	int i;
+	FILE *fp;
+	short int log_level_set[L_MAX];
+
+	if (debug)
+	{
+		char *rhs, *lhs, *p;
+		int n;
+		int level, facility;
+		memset(&log_level_set, 0, sizeof(log_level_set));
+		rhs = lhs = (char*) debug;
+		while (rhs && (rhs = strchr(rhs, '='))) {
+			rhs++;
+			p = strchr(rhs, ',');
+			n = p ? p - rhs : strlen(rhs);
+			for (level=0; level_name[level]; level++) {
+				if (!(strncasecmp(level_name[level], rhs, n)))
+					break;
+			}
+			rhs = p;
+			if (!(level_name[level])) {
+				// unknown level
+				continue;
+			}
+			do {
+				if (*lhs==',') lhs++;
+				p = strpbrk(lhs, ",=");
+				n = p ? p - lhs : strlen(lhs);
+				for (facility=0; facility_name[facility]; facility++) {
+					if (!(strncasecmp(facility_name[facility], lhs, n)))
+						break;
+				}
+				if ((facility_name[facility])) {
+					log_level[facility] = level;
+					log_level_set[facility] = 1;
+				}
+				lhs = p;
+			} while (*lhs && *lhs==',');
+		}
+		for (i=0; i<L_MAX; i++)
+		{
+			if( !log_level_set[i] )
+			{
+				log_level[i] = default_log_level;
+			}
+		}
+	}
+	else {
+		for (i=0; i<L_MAX; i++)
+			log_level[i] = default_log_level;
+	}
+
+	if (!fname)					// use default i.e. stderr
+		return 0;
+
+	if (!(fp = fopen(fname, "a")))
+		return 1;
+	log_fp = fp;
+	return 0;
+}
+
+void
+log_err(int level, enum _log_facility facility, char *fname, int lineno, char *fmt, ...)
+{
+	//char errbuf[1024];
+	char * errbuf;
+	va_list ap;
+	time_t t;
+	struct tm *tm;
+
+	if (level && level>log_level[facility])
+		return;
+
+	if (!log_fp)
+		log_fp = stderr;
+
+	// user log
+	va_start(ap, fmt);
+	//vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
+	vasprintf(&errbuf, fmt, ap);
+	va_end(ap);
+
+	// timestamp
+	t = time(0);
+	tm = localtime(&t);
+	fprintf(log_fp, "[%04d/%02d/%02d %02d:%02d:%02d] ",
+	        tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+	        tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+	if (level)
+		fprintf(log_fp, "%s:%d: %s: %s", fname, lineno, level_name[level], errbuf);
+	else
+		fprintf(log_fp, "%s:%d: %s", fname, lineno, errbuf);
+	fflush(log_fp);
+	free(errbuf);
+
+	if (level==E_FATAL)
+		exit(-1);
+
+	return;
+}