From de923c5f36f5244e888b616de42b6a1cbf045372 Mon Sep 17 00:00:00 2001
From: laforge <laforge>
Date: Thu, 10 Aug 2000 11:45:49 +0000
Subject: Initial revision

---
 ulogd/Makefile                                | 33 +++++++++++++++++++++++
 ulogd/README                                  | 39 +++++++++++++++++++++++++++
 ulogd/libipulog/Makefile                      | 14 ++++++++++
 ulogd/libipulog/include/libipulog/libipulog.h | 30 +++++++++++++++++++++
 4 files changed, 116 insertions(+)
 create mode 100644 ulogd/Makefile
 create mode 100644 ulogd/README
 create mode 100644 ulogd/libipulog/Makefile
 create mode 100644 ulogd/libipulog/include/libipulog/libipulog.h

(limited to 'ulogd')

diff --git a/ulogd/Makefile b/ulogd/Makefile
new file mode 100644
index 0000000..9cb52f6
--- /dev/null
+++ b/ulogd/Makefile
@@ -0,0 +1,33 @@
+# Path of libipulog (from iptables)
+LIBIPULOG=../libipulog
+
+# Names of the plugins to be compiled
+ULOGD_SL:=BASE OPRINT
+
+
+#  Normally You should not need to change anything below
+#
+CC = gcc
+CFLAGS = -I. -I$(LIBIPULOG)/include -g -Wall
+SH_CFLAGS:=$(CFLAGS) -fPIC
+
+SHARED_LIBS+=$(foreach T,$(ULOGD_SL),extensions/ulogd_$(T).so)
+
+all: $(SHARED_LIBS) ulogd
+
+$(SHARED_LIBS): %.so: %_sh.o
+	ld -shared -o $@ $<
+
+%_sh.o: %.c
+	gcc $(SH_CFLAGS) -o $@ -c $<
+
+ulogd: ulogd.c ../libipulog/libipulog.a ulogd.h
+	$(CC) $(CFLAGS) -rdynamic -ldl -i ulogd.c $(LIBIPULOG)/libipulog.a -o ulogd
+
+clean:
+	rm -f ulogd extensions/*.o extensions/*.so
+
+install: all
+	mkdir -p /usr/local/lib/ulogd && cp extensions/*.so /usr/local/lib/ulogd
+	cp ulogd /usr/local/sbin
+	
diff --git a/ulogd/README b/ulogd/README
new file mode 100644
index 0000000..4d0870b
--- /dev/null
+++ b/ulogd/README
@@ -0,0 +1,39 @@
+===> CONECEPT
+
+I want to write a flexible, almost universal logging daemon for my netfilter 
+ULOG target. These are my thoughts about how the architecture which is most capable of doing that:
+
+1. Interpreter lugins
+
+It should be possible to add plugins / runtime modules for new protocols, etc.
+For example the standard logging daemon provides source-ip, dest-ip, 
+source-port, dest-port, etc. Logging for variuos other protocols (GRE, 
+IPsec, ...) may be implemented as modules.
+
+2. Output plugins
+... describe how and where to put the information gained by logging plugins. 
+The easiest way is to build a line per packet and fprint it to a file. 
+Some people might want to log into a SQL database or want an output 
+conforming to the intrusion detection systems communication draft from the
+ietf.
+
+
+===> DETAILS
+
+The major clue is providing a framework which is as flexible as possible. 
+Nobody knows what strange network protocols are out there :) Flexibility
+depends on the communication between the output of the logging plugins 
+and input of the output plugins.
+
+Rusty advised me to use some kind of type-key-value triples, but I think
+this is the total overkill and is too complicated for me to implement it 
+in a reasonable short period of time. (3 hours later) Hmm... Rusty finally 
+convinced me to use linked lists of type-key-value triples - and it wasn't 
+that difficult.
+
+===> INSTALLATION
+
+Just copy the plugins into /usr/local/lib/ulogd and the ulogd to wherever 
+You want it to be.
+
+===>
diff --git a/ulogd/libipulog/Makefile b/ulogd/libipulog/Makefile
new file mode 100644
index 0000000..e737363
--- /dev/null
+++ b/ulogd/libipulog/Makefile
@@ -0,0 +1,14 @@
+CC = gcc
+CFLAGS = -I./include # -g
+
+ulog_test: ulog_test.c libipulog.a
+	$(CC) $(CFLAGS) -i ulog_test.c libipulog.a -o ulog_test
+
+libipulog.o: libipulog.c
+	$(CC) $(CFLAGS) -c libipulog.c -o libipulog.o
+
+libipulog.a: libipulog.o
+	ld -i libipulog.o -o libipulog.a
+
+clean:
+	rm -f ulog_test libipulog.o libipulog.a
diff --git a/ulogd/libipulog/include/libipulog/libipulog.h b/ulogd/libipulog/include/libipulog/libipulog.h
new file mode 100644
index 0000000..9f920dd
--- /dev/null
+++ b/ulogd/libipulog/include/libipulog/libipulog.h
@@ -0,0 +1,30 @@
+#ifndef _LIBIPULOG_H
+#define _LIBIPULOG_H
+
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <asm/types.h>
+#include <linux/netlink.h>
+#include <net/if.h>
+#include <linux/netfilter_ipv4/ipt_ULOG.h>
+
+struct ipulog_handle;
+
+u_int32_t ipulog_group2gmask(u_int32_t group);
+
+struct ipulog_handle *ipulog_create_handle(u_int32_t gmask);
+
+void ipulog_destroy_handle(struct ipulog_handle *h);
+
+ssize_t ipulog_read(struct ipulog_handle *h,
+		    unsigned char *buf, size_t len, int timeout);
+
+ulog_packet_msg_t *ipulog_get_packet(const unsigned char *buf);
+
+void ipulog_perror(const char *s);
+
+#endif /* _LIBULOG_H */
-- 
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