1 files changed, 159 insertions, 0 deletions
diff --git a/src/log.c b/src/log.c
new file mode 100644
index 0000000..9fe5119
--- /dev/null
+++ b/src/log.c
@@ -0,0 +1,159 @@
+/*
+ * (C) 2006 by Pablo Neira Ayuso <pablo@netfilter.org>
+ * 
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Description: Logging support for the conntrack daemon
+ */
+
+#include "log.h"
+#include "conntrackd.h"
+
+#include <time.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+int init_log(void)
+{
+	if (CONFIG(logfile)[0]) {
+		STATE(log) = fopen(CONFIG(logfile), "a+");
+		if (STATE(log) == NULL) {
+			fprintf(stderr, "ERROR: can't open logfile `%s'."
+				"Reason: %s\n", CONFIG(logfile), 
+						strerror(errno));
+			return -1;
+		}
+
+		setlinebuf(STATE(log));
+	}
+
+	if (CONFIG(stats).logfile[0]) {
+		STATE(stats_log) = fopen(CONFIG(stats).logfile, "a+");
+		if (STATE(stats_log) == NULL) {
+			fprintf(stderr, "ERROR: can't open logfile `%s'."
+				"Reason: %s\n", CONFIG(stats).logfile, 
+						strerror(errno));
+			return -1;
+		}
+
+		setlinebuf(STATE(stats_log));
+	}
+
+	if (CONFIG(syslog_facility) != -1 || 
+	    CONFIG(stats).syslog_facility != -1)
+		openlog(PACKAGE, LOG_PID, CONFIG(syslog_facility));
+
+	return 0;
+}
+
+void dlog(int priority, const char *format, ...)
+ {
+	FILE *fd = STATE(log);
+	time_t t;
+	char *buf;
+	const char *prio;
+ 	va_list args;
+ 
+	if (fd) {
+		t = time(NULL);
+		buf = ctime(&t);
+		buf[strlen(buf)-1]='\0';
+		switch (priority) {
+		case LOG_INFO:
+			prio = "info";
+			break;
+		case LOG_NOTICE:
+			prio = "notice";
+			break;
+		case LOG_WARNING:
+			prio = "warning";
+			break;
+		case LOG_ERR:
+			prio = "ERROR";
+			break;
+		default:
+			prio = "?";
+			break;
+		}
+		va_start(args, format);
+		fprintf(fd, "[%s] (pid=%d) [%s] ", buf, getpid(), prio);
+		vfprintf(fd, format, args);
+		va_end(args);
+		fprintf(fd, "\n");
+		fflush(fd);
+	}
+
+	if (CONFIG(syslog_facility) != -1) {
+		va_start(args, format);
+		vsyslog(priority, format, args);
+		va_end(args);
+	}
+}
+
+void dlog_ct(FILE *fd, struct nf_conntrack *ct, unsigned int type)
+{
+	time_t t;
+	char buf[1024];
+	char *tmp;
+	unsigned int flags = 0;
+
+	buf[0]='\0';
+
+	switch(type) {
+	case NFCT_O_PLAIN:
+		t = time(NULL);
+		ctime_r(&t, buf);
+		tmp = buf + strlen(buf);
+		buf[strlen(buf)-1]='\t';
+		break;
+	case NFCT_O_XML:
+		tmp = buf;
+		flags |= NFCT_OF_TIME;
+		break;
+	default:
+		return;
+	}
+	nfct_snprintf(buf+strlen(buf), 1024-strlen(buf), ct, 0, type, flags);
+
+	if (fd) {
+		snprintf(buf+strlen(buf), 1024-strlen(buf), "\n");
+		fputs(buf, fd);
+	}
+
+	if (fd == STATE(log)) {
+		/* error reporting */
+		if (CONFIG(syslog_facility) != -1)
+			syslog(LOG_ERR, "%s", tmp);
+	} else if (fd == STATE(stats_log)) {
+		/* connection logging */
+		if (CONFIG(stats).syslog_facility != -1)
+			syslog(LOG_INFO, "%s", tmp);
+	}
+}
+
+void close_log(void)
+{
+	if (STATE(log) != NULL)
+		fclose(STATE(log));
+
+	if (STATE(stats_log) != NULL)
+		fclose(STATE(stats_log));
+
+	if (CONFIG(syslog_facility) != -1 || 
+	    CONFIG(stats).syslog_facility != -1)
+		closelog();
+}