From db349a8ccc0cb420ee9fcdf6ff999273a3ae8b3d Mon Sep 17 00:00:00 2001
From: Olaf Rempel <razzor@kopf-tisch.de>
Date: Tue, 4 Dec 2007 17:26:30 +0100
Subject: [PATCH] syslog listener

---
 Makefile       |  2 +-
 irclogbot.c    | 10 ++++++++-
 irclogbot.conf |  2 ++
 ircsession.h   |  3 ++-
 syslog.c       | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 syslog.h       |  7 +++++++
 6 files changed, 76 insertions(+), 3 deletions(-)
 create mode 100644 syslog.c
 create mode 100644 syslog.h

diff --git a/Makefile b/Makefile
index 27f1b6f..2d66541 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CFLAGS := -O2 -pipe -Wall
 
-OBJS := configfile.o event.o ircsession.o linebuffer.o logging.o sockaddr.o tcpsocket.o
+OBJS := configfile.o event.o ircsession.o linebuffer.o logging.o sockaddr.o syslog.o tcpsocket.o
 
 all: irclogbot
 
diff --git a/irclogbot.c b/irclogbot.c
index 17508fd..a9bcd53 100644
--- a/irclogbot.c
+++ b/irclogbot.c
@@ -5,9 +5,9 @@
 #include "configfile.h"
 #include "event.h"
 #include "ircsession.h"
-#include "list.h"
 #include "logging.h"
 #include "sockaddr.h"
+#include "syslog.h"
 
 #define DEFAULT_CONFIG "irclogbot.conf"
 
@@ -17,6 +17,11 @@ int main(int argc, char *argv[])
 	if (config_parse(DEFAULT_CONFIG))
 		exit(1);
 
+	char *syslog_addr = (char *)config_get_string("global", "syslog-addr", "0.0.0.0:514");
+	int logsock = syslog_listen(syslog_addr);
+	if (logsock == -1)
+		exit(1);
+
 	char *server_str = (char *)config_get_string("global", "server", NULL);
 	if (server_str == NULL)
 		exit(1);
@@ -33,8 +38,11 @@ int main(int argc, char *argv[])
 	session->channel_key = (char *)config_get_string("global", "channel-key", NULL);
 
 	irc_connect(session);
+
+	event_add_readfd(NULL, logsock, syslog_cb, session);
 	event_loop();
 
+	close(logsock);
 	config_free();
 	return 0;
 }
diff --git a/irclogbot.conf b/irclogbot.conf
index 7ab5385..93fdabe 100644
--- a/irclogbot.conf
+++ b/irclogbot.conf
@@ -1,4 +1,6 @@
 [global]
+syslog-addr 0.0.0.0:514
+
 server 83.140.172.211:6667
 #server-pass test
 
diff --git a/ircsession.h b/ircsession.h
index 4f72009..e38c6b0 100644
--- a/ircsession.h
+++ b/ircsession.h
@@ -33,7 +33,8 @@ enum {
 
 struct irc_session * irc_create_session(void);
 void irc_destroy_session(struct irc_session *session);
-
 int irc_connect(struct irc_session *session);
 
+int irc_send(struct irc_session *session, const char *fmt, ...);
+
 #endif /* _IRCSESSION_H_ */
diff --git a/syslog.c b/syslog.c
new file mode 100644
index 0000000..6b37240
--- /dev/null
+++ b/syslog.c
@@ -0,0 +1,55 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include "ircsession.h"
+#include "logging.h"
+#include "sockaddr.h"
+
+int syslog_listen(const char *addr_str)
+{
+	struct sockaddr_in addr;
+	parse_sockaddr(addr_str, &addr);
+
+	int sock = socket(PF_INET, SOCK_DGRAM, 0);
+	if (sock < 0) {
+		log_print(LOG_ERROR, "socket()");
+		return -1;
+	}
+
+	if (bind(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+		log_print(LOG_ERROR, "bind()");
+		return -1;
+	}
+
+	return sock;
+}
+
+int syslog_cb(int fd, void *privdata)
+{
+	struct irc_session *session = (struct irc_session *)privdata;
+
+	char buf[1500];
+	struct sockaddr_in addr;
+	unsigned int i = sizeof(addr);
+
+	int len = recvfrom(fd, buf, sizeof(buf), 0, (struct sockaddr *)&addr, &i);
+	if (len <= 0)
+		return -1;
+
+	if (session->state != IRC_JOINED)
+		return 0;
+
+	buf[len] = '\0';
+
+	char *tmp = strchr(buf, ' ');
+	tmp = strchr(tmp +1, ' ');
+	tmp = strchr(tmp +1, ' ');
+
+	irc_send(session, "PRIVMSG %s :%s: %s", session->channel, inet_ntoa(addr.sin_addr), tmp +1);
+	return 0;
+}
diff --git a/syslog.h b/syslog.h
new file mode 100644
index 0000000..a3cc48c
--- /dev/null
+++ b/syslog.h
@@ -0,0 +1,7 @@
+#ifndef _SYSLOG_H_
+#define _SYSLOG_H_
+
+int syslog_listen(const char *addr_str);
+int syslog_cb(int fd, void *privdata);
+
+#endif /* _SYSLOG_H_ */