From cdc8744396470397dcbb9b50dc197526c4cb834c Mon Sep 17 00:00:00 2001
From: "/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org"
 </C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org>
Date: Sun, 13 Jan 2008 17:17:11 +0000
Subject: Several tree reorganizations: - move l3extensions/ and extensions/ to
 src/deprecated/ - don't create submodules under
 /usr/lib/libnetfilter_conntrack/ anymore

---
 .../extensions/libnetfilter_conntrack_icmp.c       | 90 ++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/deprecated/extensions/libnetfilter_conntrack_icmp.c

(limited to 'src/deprecated/extensions/libnetfilter_conntrack_icmp.c')

diff --git a/src/deprecated/extensions/libnetfilter_conntrack_icmp.c b/src/deprecated/extensions/libnetfilter_conntrack_icmp.c
new file mode 100644
index 0000000..72a7eb0
--- /dev/null
+++ b/src/deprecated/extensions/libnetfilter_conntrack_icmp.c
@@ -0,0 +1,90 @@
+/*
+ * (C) 2005 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.
+ *
+ */
+#include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netinet/in.h> /* For htons */
+#include <libnetfilter_conntrack/linux_nfnetlink_conntrack.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack_extensions.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack_icmp.h>
+
+static void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple)
+{
+	if (cda[CTA_PROTO_ICMP_TYPE-1])
+		tuple->l4dst.icmp.type =
+			*(u_int8_t *)NFA_DATA(cda[CTA_PROTO_ICMP_TYPE-1]);
+
+	if (cda[CTA_PROTO_ICMP_CODE-1])
+		tuple->l4dst.icmp.code =
+			*(u_int8_t *)NFA_DATA(cda[CTA_PROTO_ICMP_CODE-1]);
+
+	if (cda[CTA_PROTO_ICMP_ID-1])
+		tuple->l4src.icmp.id =
+			*(u_int16_t *)NFA_DATA(cda[CTA_PROTO_ICMP_ID-1]);
+}
+
+static void build_tuple_proto(struct nfnlhdr *req, int size,
+			      struct nfct_tuple *t)
+{
+	nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_CODE,
+		       &t->l4dst.icmp.code, sizeof(u_int8_t));
+	nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_TYPE,
+		       &t->l4dst.icmp.type, sizeof(u_int8_t));
+	nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_ID,
+		       &t->l4src.icmp.id, sizeof(u_int16_t));
+}
+
+static int print_proto(char *buf, struct nfct_tuple *t)
+{
+	/* The ID only makes sense some ICMP messages but we want to
+	 * display the same output that /proc/net/ip_conntrack does */
+	return (sprintf(buf, "type=%d code=%d id=%d ",t->l4dst.icmp.type,
+						      t->l4dst.icmp.code,
+						      ntohs(t->l4src.icmp.id)));
+}
+
+static int compare(struct nfct_conntrack *ct1,
+		   struct nfct_conntrack *ct2,
+		   unsigned int flags)
+{
+	if (flags & ICMP_TYPE)
+		if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type !=
+		    ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type)
+			return 0;
+	if (flags & ICMP_CODE)
+		if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code !=
+		    ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code)
+			return 0;
+	if (flags & ICMP_ID)
+		if (ct1->tuple[NFCT_DIR_REPLY].l4src.icmp.id !=
+		    ct2->tuple[NFCT_DIR_REPLY].l4src.icmp.id)
+			return 0;
+
+	return 1;
+}
+
+static struct nfct_proto icmp = {
+	.name 			= "icmp",
+	.protonum		= IPPROTO_ICMP,
+	.parse_proto		= parse_proto,
+	.build_tuple_proto	= build_tuple_proto,
+	.print_proto		= print_proto,
+	.compare		= compare,
+	.version		= VERSION
+};
+
+static void __attribute__ ((constructor)) init(void);
+
+static void init(void)
+{
+	nfct_register_proto(&icmp);
+}
-- 
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