Importing all of DRL, including ulogd and all of its files.

[distributedratelimiting.git] / extensions / ulogd_LOGEMU.c

diff --git a/extensions/ulogd_LOGEMU.c b/extensions/ulogd_LOGEMU.c
new file mode 100644 (file)
index 0000000..ed89c1c
--- /dev/null
+++ b/extensions/ulogd_LOGEMU.c
@@ -0,0 +1,136 @@
+/* ulogd_LOGEMU.c, Version $Revision: 5252 $
+ *
+ * ulogd output target for syslog logging emulation
+ *
+ * This target produces a file which looks the same like the syslog-entries
+ * of the LOG target.
+ *
+ * (C) 2000-2001 by Harald Welte <laforge@gnumonks.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 
+ *  as published by the Free Software Foundation
+ *
+ *  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
+ *
+ * $Id: ulogd_LOGEMU.c 5252 2005-02-14 16:12:49Z laforge $
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ulogd/ulogd.h>
+#include <ulogd/conffile.h>
+#include "printpkt.c"
+
+#ifndef ULOGD_LOGEMU_DEFAULT
+#define ULOGD_LOGEMU_DEFAULT   "/var/log/ulogd.syslogemu"
+#endif
+
+#ifndef ULOGD_LOGEMU_SYNC_DEFAULT
+#define ULOGD_LOGEMU_SYNC_DEFAULT      0
+#endif
+
+#define NIPQUAD(addr) \
+       ((unsigned char *)&addr)[0], \
+       ((unsigned char *)&addr)[1], \
+        ((unsigned char *)&addr)[2], \
+        ((unsigned char *)&addr)[3]
+
+static config_entry_t syslogf_ce = { 
+       .key = "file", 
+       .type = CONFIG_TYPE_STRING, 
+       .options = CONFIG_OPT_NONE, 
+       .u = { .string = ULOGD_LOGEMU_DEFAULT }
+};
+
+static config_entry_t syslsync_ce = { 
+       .next = &syslogf_ce, 
+       .key = "sync", 
+       .type = CONFIG_TYPE_INT, 
+       .options = CONFIG_OPT_NONE, 
+       .u = { .value = ULOGD_LOGEMU_SYNC_DEFAULT }
+};
+
+static FILE *of = NULL;
+
+static int _output_logemu(ulog_iret_t *res)
+{
+       static char buf[4096];
+
+       printpkt_print(res, buf, 1);
+
+       fprintf(of, "%s", buf);
+
+       if (syslsync_ce.u.value) 
+               fflush(of);
+
+       return 0;
+}
+
+static void signal_handler_logemu(int signal)
+{
+       switch (signal) {
+       case SIGHUP:
+               ulogd_log(ULOGD_NOTICE, "syslogemu: reopening logfile\n");
+               fclose(of);
+               of = fopen(syslogf_ce.u.string, "a");
+               if (!of) {
+                       ulogd_log(ULOGD_FATAL, "can't open syslogemu: %s\n",
+                               strerror(errno));
+                       exit(2);
+               }
+               break;
+       default:
+               break;
+       }
+}
+               
+
+static int init_logemu(void) {
+       /* FIXME: error handling */
+       config_parse_file("LOGEMU", &syslsync_ce);
+
+#ifdef DEBUG_LOGEMU
+       of = stdout;
+#else
+       of = fopen(syslogf_ce.u.string, "a");
+       if (!of) {
+               ulogd_log(ULOGD_FATAL, "can't open syslogemu: %s\n", 
+                       strerror(errno));
+               exit(2);
+       }               
+#endif
+       if (printpkt_init()) {
+               ulogd_log(ULOGD_ERROR, "can't resolve all keyhash id's\n");
+       }
+
+       return 1;
+}
+
+static void fini_logemu(void) {
+       if (of != stdout)
+               fclose(of);
+}
+
+static ulog_output_t logemu_op = { 
+       .name = "syslogemu",
+       .init = &init_logemu,
+       .fini = &fini_logemu,
+       .output = &_output_logemu, 
+       .signal = &signal_handler_logemu,
+};
+
+void _init(void)
+{
+       register_output(&logemu_op);
+}