update layer7 (forward port from whiterussian)

SVN-Revision: 2538
2005-11-19 19:24:33 +00:00 · 2005-11-19 19:24:33 +00:00 · bef13ad1d0
parent 81668c7ab9
commit bef13ad1d0
2 changed files with 133 additions and 76 deletions
--- a/openwrt/package/iptables/patches/02-layer7-1.5nbd.patch
+++ b/openwrt/package/iptables/patches/02-layer7-1.5nbd.patch
@ -1,13 +1,44 @@
-diff -Nurp iptables-1.3.0-stock/extensions/.layer7-test iptables-1.3.0-layer7/extensions/.layer7-test
--- iptables-1.3.0-stock/extensions/.layer7-test	1969-12-31 18:00:00.000000000 -0600
-+++ iptables-1.3.0-layer7/extensions/.layer7-test	2005-03-01 22:12:06.000000000 -0600
+diff -urN iptables.old/extensions/.layer7-test iptables.dev/extensions/.layer7-test
+--- iptables.old/extensions/.layer7-test	1970-01-01 01:00:00.000000000 +0100
+++ iptables.dev/extensions/.layer7-test	2005-11-10 16:57:51.819381000 +0100
@@ -0,0 +1,2 @@
 +#! /bin/sh
 +[ -f $KERNEL_DIR/include/linux/netfilter_ipv4/ipt_layer7.h ] && echo layer7
-diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7/extensions/libipt_layer7.c
--- iptables-1.3.0-stock/extensions/libipt_layer7.c	1969-12-31 18:00:00.000000000 -0600
-+++ iptables-1.3.0-layer7/extensions/libipt_layer7.c	2005-03-06 22:14:13.000000000 -0600
-@@ -0,0 +1,357 @@
+diff -urN iptables.old/extensions/ipt_layer7.h iptables.dev/extensions/ipt_layer7.h
+--- iptables.old/extensions/ipt_layer7.h	1970-01-01 01:00:00.000000000 +0100
+++ iptables.dev/extensions/ipt_layer7.h	2005-11-10 17:46:32.933599750 +0100
+@@ -0,0 +1,27 @@
+/* 
+  By Matthew Strait <quadong@users.sf.net>, Dec 2003.
+  http://l7-filter.sf.net
+
+  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.
+  http://www.gnu.org/licenses/gpl.txt
+*/
+
+#ifndef _IPT_LAYER7_H
+#define _IPT_LAYER7_H
+
+#define MAX_PATTERN_LEN 8192
+#define MAX_PROTOCOL_LEN 256
+
+typedef char *(*proc_ipt_search) (char *, char, char *);
+
+struct ipt_layer7_info {
+    char protocol[MAX_PROTOCOL_LEN];
+    char invert:1;
+    char pattern[MAX_PATTERN_LEN];
+	char pkt;
+};
+
+#endif /* _IPT_LAYER7_H */
+diff -urN iptables.old/extensions/libipt_layer7.c iptables.dev/extensions/libipt_layer7.c
+--- iptables.old/extensions/libipt_layer7.c	1970-01-01 01:00:00.000000000 +0100
+++ iptables.dev/extensions/libipt_layer7.c	2005-11-10 17:47:01.399378750 +0100
+@@ -0,0 +1,358 @@
 +/* 
 +   Shared library add-on to iptables to add layer 7 matching support. 
 +  
@ -34,7 +65,7 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +#include <dirent.h>
 +
 +#include <iptables.h>
-+#include <linux/netfilter_ipv4/ipt_layer7.h>
+#include "ipt_layer7.h"
 +
 +#define MAX_FN_LEN 256
 +
@ -47,7 +78,8 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +	"LAYER7 match v%s options:\n"
 +	"--l7dir <directory>  : Look for patterns here instead of /etc/l7-protocols/\n"
 +	"                       (--l7dir must be specified before --l7proto if used!)\n"
-+	"--l7proto [!] <name> : Match the protocol defined in /etc/l7-protocols/name.pat\n",
+	"--l7proto [!] <name> : Match the protocol defined in /etc/l7-protocols/name.pat\n"
+	"--l7pkt              : Skip connection tracking and match individual packets\n",
 +	IPTABLES_VERSION);
 +	fputc('\n', stdout);
 +}
@ -55,15 +87,10 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +static struct option opts[] = {
 +	{ .name = "l7proto", .has_arg = 1, .flag = 0, .val = '1' },
 +	{ .name = "l7dir",   .has_arg = 1, .flag = 0, .val = '2' },
+	{ .name = "l7pkt",   .has_arg = 0, .flag = 0, .val = '3' },
 +	{ .name = 0 }
 +};
 +
-+/* Initialize the match. */
-+static void init(struct ipt_entry_match *m, unsigned int *nfcache)
-+{
-+	*nfcache |= NFC_UNKNOWN;
-+}
-+
 +/* reads filename, puts protocol info into layer7_protocol_info, number of protocols to numprotos */
 +int parse_protocol_file(char * filename, const unsigned char * protoname, struct ipt_layer7_info *info)
 +{
@ -305,6 +332,9 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +
 +		*flags = 1;
 +		break;
+	case '3':
+		layer7info->pkt = 1;
+		break;
 +
 +	default:
 +		return 0;
@ -337,6 +367,9 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +
 +	print_protocol(((struct ipt_layer7_info *)match->data)->protocol,
 +		  ((struct ipt_layer7_info *)match->data)->invert, numeric);
+
+	if (((struct ipt_layer7_info *)match->data)->pkt)
+		printf("l7pkt ");
 +}
 +/* Saves the union ipt_matchinfo in parsable form to stdout. */
 +static void save(const struct ipt_ip *ip, const struct ipt_entry_match *match)
@ -353,7 +386,6 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +    .size          = IPT_ALIGN(sizeof(struct ipt_layer7_info)),
 +    .userspacesize = IPT_ALIGN(sizeof(struct ipt_layer7_info)),
 +    .help          = &help,
-+    .init          = &init,
 +    .parse         = &parse,
 +    .final_check   = &final_check,
 +    .print         = &print,
@ -365,9 +397,9 @@ diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.c iptables-1.3.0-layer7
 +{
 +	register_match(&layer7);
 +}
-diff -Nurp iptables-1.3.0-stock/extensions/libipt_layer7.man iptables-1.3.0-layer7/extensions/libipt_layer7.man
--- iptables-1.3.0-stock/extensions/libipt_layer7.man	1969-12-31 18:00:00.000000000 -0600
-+++ iptables-1.3.0-layer7/extensions/libipt_layer7.man	2005-03-01 22:12:06.000000000 -0600
+diff -urN iptables.old/extensions/libipt_layer7.man iptables.dev/extensions/libipt_layer7.man
+--- iptables.old/extensions/libipt_layer7.man	1970-01-01 01:00:00.000000000 +0100
+++ iptables.dev/extensions/libipt_layer7.man	2005-11-10 16:57:51.823381250 +0100
@@ -0,0 +1,13 @@
 +This module matches packets based on the application layer data of 
 +their connections.  It uses regular expression matching to compare 
--- a/openwrt/target/linux/linux-2.4/patches/generic/602-netfilter_layer7_1.5nbd.patch
+++ b/openwrt/target/linux/linux-2.4/patches/generic/602-netfilter_layer7_1.5nbd.patch
@ -1,7 +1,7 @@
-diff -Nurp linux-2.4.30/Documentation/Configure.help linux-2.4.30-layer7/Documentation/Configure.help
--- linux-2.4.30/Documentation/Configure.help	2005-04-03 20:42:19.000000000 -0500
-+++ linux-2.4.30-layer7/Documentation/Configure.help	2005-05-03 18:37:03.000000000 -0500
-@@ -29056,6 +29056,23 @@ CONFIG_SOUND_WM97XX
+diff -urN linux.old/Documentation/Configure.help linux.dev/Documentation/Configure.help
+--- linux.old/Documentation/Configure.help	2005-11-10 16:01:07.645540500 +0100
+++ linux.dev/Documentation/Configure.help	2005-11-10 16:03:00.524595000 +0100
+@@ -29082,6 +29082,23 @@
   
   If unsure, say N.
 
@ -25,10 +25,10 @@ diff -Nurp linux-2.4.30/Documentation/Configure.help linux-2.4.30-layer7/Documen
 #
 # A couple of things I keep forgetting:
 #   capitalize: AppleTalk, Ethernet, DOS, DMA, FAT, FTP, Internet,
-diff -Nurp linux-2.4.30/include/linux/netfilter_ipv4/ip_conntrack.h linux-2.4.30-layer7/include/linux/netfilter_ipv4/ip_conntrack.h
--- linux-2.4.30/include/linux/netfilter_ipv4/ip_conntrack.h	2005-04-03 20:42:20.000000000 -0500
-+++ linux-2.4.30-layer7/include/linux/netfilter_ipv4/ip_conntrack.h	2005-05-03 18:37:03.000000000 -0500
-@@ -207,6 +207,17 @@ struct ip_conntrack
+diff -urN linux.old/include/linux/netfilter_ipv4/ip_conntrack.h linux.dev/include/linux/netfilter_ipv4/ip_conntrack.h
+--- linux.old/include/linux/netfilter_ipv4/ip_conntrack.h	2005-04-04 03:42:20.000000000 +0200
+++ linux.dev/include/linux/netfilter_ipv4/ip_conntrack.h	2005-11-10 16:03:00.544596250 +0100
+@@ -207,6 +207,17 @@
 	} nat;
 #endif /* CONFIG_IP_NF_NAT_NEEDED */
 
@ -46,10 +46,10 @@ diff -Nurp linux-2.4.30/include/linux/netfilter_ipv4/ip_conntrack.h linux-2.4.30
 };
 
 /* get master conntrack via master expectation */
-diff -Nurp linux-2.4.30/include/linux/netfilter_ipv4/ipt_layer7.h linux-2.4.30-layer7/include/linux/netfilter_ipv4/ipt_layer7.h
--- linux-2.4.30/include/linux/netfilter_ipv4/ipt_layer7.h	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/include/linux/netfilter_ipv4/ipt_layer7.h	2005-05-03 18:37:03.000000000 -0500
-@@ -0,0 +1,26 @@
+diff -urN linux.old/include/linux/netfilter_ipv4/ipt_layer7.h linux.dev/include/linux/netfilter_ipv4/ipt_layer7.h
+--- linux.old/include/linux/netfilter_ipv4/ipt_layer7.h	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/include/linux/netfilter_ipv4/ipt_layer7.h	2005-11-10 17:22:12.777440750 +0100
+@@ -0,0 +1,27 @@
 +/* 
 +  By Matthew Strait <quadong@users.sf.net>, Dec 2003.
 +  http://l7-filter.sf.net
@ -73,13 +73,14 @@ diff -Nurp linux-2.4.30/include/linux/netfilter_ipv4/ipt_layer7.h linux-2.4.30-l
 +    char protocol[MAX_PROTOCOL_LEN];
 +    char invert:1;
 +    char pattern[MAX_PATTERN_LEN];
+	char pkt;
 +};
 +
 +#endif /* _IPT_LAYER7_H */
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/Config.in linux-2.4.30-layer7/net/ipv4/netfilter/Config.in
--- linux-2.4.30/net/ipv4/netfilter/Config.in	2005-01-19 08:10:13.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/Config.in	2005-05-03 18:37:03.000000000 -0500
-@@ -43,6 +43,10 @@ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ]; 
+diff -urN linux.old/net/ipv4/netfilter/Config.in linux.dev/net/ipv4/netfilter/Config.in
+--- linux.old/net/ipv4/netfilter/Config.in	2005-11-10 16:01:16.194074750 +0100
+++ linux.dev/net/ipv4/netfilter/Config.in	2005-11-10 16:03:00.576598250 +0100
+@@ -44,6 +44,10 @@
   if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
     dep_tristate '  Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
     dep_tristate '  Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES
@ -90,10 +91,10 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/Config.in linux-2.4.30-layer7/net/ipv
   fi
 # The targets
   dep_tristate '  Packet filtering' CONFIG_IP_NF_FILTER $CONFIG_IP_NF_IPTABLES 
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/Makefile linux-2.4.30-layer7/net/ipv4/netfilter/Makefile
--- linux-2.4.30/net/ipv4/netfilter/Makefile	2003-08-25 06:44:44.000000000 -0500
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/Makefile	2005-05-03 18:44:12.000000000 -0500
-@@ -86,6 +86,7 @@ obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_s
+diff -urN linux.old/net/ipv4/netfilter/Makefile linux.dev/net/ipv4/netfilter/Makefile
+--- linux.old/net/ipv4/netfilter/Makefile	2005-11-10 16:01:16.210075750 +0100
+++ linux.dev/net/ipv4/netfilter/Makefile	2005-11-10 16:03:00.576598250 +0100
+@@ -87,6 +87,7 @@
 obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
 obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
 obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
@ -101,10 +102,10 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/Makefile linux-2.4.30-layer7/net/ipv4
 
 # targets
 obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/ip_conntrack_core.c linux-2.4.30-layer7/net/ipv4/netfilter/ip_conntrack_core.c
--- linux-2.4.30/net/ipv4/netfilter/ip_conntrack_core.c	2005-04-03 20:42:20.000000000 -0500
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/ip_conntrack_core.c	2005-05-03 18:37:03.000000000 -0500
-@@ -346,6 +346,14 @@ destroy_conntrack(struct nf_conntrack *n
+diff -urN linux.old/net/ipv4/netfilter/ip_conntrack_core.c linux.dev/net/ipv4/netfilter/ip_conntrack_core.c
+--- linux.old/net/ipv4/netfilter/ip_conntrack_core.c	2005-04-04 03:42:20.000000000 +0200
+++ linux.dev/net/ipv4/netfilter/ip_conntrack_core.c	2005-11-10 16:03:00.584598750 +0100
+@@ -346,6 +346,14 @@
 		}
 		kfree(ct->master);
 	}
@ -119,10 +120,10 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ip_conntrack_core.c linux-2.4.30-laye
 	WRITE_UNLOCK(&ip_conntrack_lock);
 
 	if (master)
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/ip_conntrack_standalone.c linux-2.4.30-layer7/net/ipv4/netfilter/ip_conntrack_standalone.c
--- linux-2.4.30/net/ipv4/netfilter/ip_conntrack_standalone.c	2005-04-03 20:42:20.000000000 -0500
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/ip_conntrack_standalone.c	2005-05-03 18:37:03.000000000 -0500
-@@ -107,6 +107,13 @@ print_conntrack(char *buffer, struct ip_
+diff -urN linux.old/net/ipv4/netfilter/ip_conntrack_standalone.c linux.dev/net/ipv4/netfilter/ip_conntrack_standalone.c
+--- linux.old/net/ipv4/netfilter/ip_conntrack_standalone.c	2005-04-04 03:42:20.000000000 +0200
+++ linux.dev/net/ipv4/netfilter/ip_conntrack_standalone.c	2005-11-10 16:03:00.592599250 +0100
+@@ -107,6 +107,13 @@
 		len += sprintf(buffer + len, "[ASSURED] ");
 	len += sprintf(buffer + len, "use=%u ",
 		       atomic_read(&conntrack->ct_general.use));
@ -136,10 +137,10 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ip_conntrack_standalone.c linux-2.4.3
 	len += sprintf(buffer + len, "\n");
 
 	return len;
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/ipv4/netfilter/ipt_layer7.c
--- linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/ipt_layer7.c	2005-05-03 18:37:03.000000000 -0500
-@@ -0,0 +1,557 @@
+diff -urN linux.old/net/ipv4/netfilter/ipt_layer7.c linux.dev/net/ipv4/netfilter/ipt_layer7.c
+--- linux.old/net/ipv4/netfilter/ipt_layer7.c	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/net/ipv4/netfilter/ipt_layer7.c	2005-11-10 16:55:35.238845250 +0100
+@@ -0,0 +1,581 @@
 +/* 
 +  Kernel module to match application layer (OSI layer 7) 
 +  data in connections.
@ -434,27 +435,34 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/
 +	}
 +}
 +
-+/* add the new app data to the conntrack.  Return number of bytes added. */
-+static int add_data(struct ip_conntrack * master_conntrack, 
-+			char * app_data, int appdatalen)
+static int add_datastr(char *target, int offset, char *app_data, int len)
 +{
 +	int length = 0, i;
-+	int oldlength = master_conntrack->layer7.app_data_len;
 +	
 +	/* Strip nulls. Make everything lower case (our regex lib doesn't
 +	do case insensitivity).  Add it to the end of the current data. */
-+	for(i = 0; i < CONFIG_IP_NF_MATCH_LAYER7_MAXDATALEN-oldlength-1 && 
-+		   i < appdatalen; i++) {
+	for(i = 0; i < CONFIG_IP_NF_MATCH_LAYER7_MAXDATALEN-offset-1 && 
+		   i < len; i++) {
 +		if(app_data[i] != '\0') {
-+			master_conntrack->layer7.app_data[length+oldlength] = 
+			target[length+offset] = 
 +				/* the kernel version of tolower mungs 'upper ascii' */
 +				isascii(app_data[i])? tolower(app_data[i]) : app_data[i];
 +			length++;
 +		}
 +	}
+	target[length+offset] = '\0';
 +
-+	master_conntrack->layer7.app_data[length+oldlength] = '\0';
-+	master_conntrack->layer7.app_data_len = length + oldlength;
+	return length;
+}
+
+/* add the new app data to the conntrack.  Return number of bytes added. */
+static int add_data(struct ip_conntrack * master_conntrack, 
+			char * app_data, int appdatalen)
+{
+	int length;
+	
+	length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
+	master_conntrack->layer7.app_data_len += length;
 +
 +	return length;
 +}
@ -467,7 +475,7 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/
 +	struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo;
 +	enum ip_conntrack_info master_ctinfo, ctinfo;
 +	struct ip_conntrack *master_conntrack, *conntrack;
-+	unsigned char * app_data;  
+	unsigned char *app_data, *tmp_data;  
 +	unsigned int pattern_result, appdatalen;
 +	regexp * comppattern;
 +
@ -497,8 +505,8 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/
 +	}
 +
 +	/* if we've classified it or seen too many packets */
-+	if(TOTAL_PACKETS > num_packets || 
-+	   master_conntrack->layer7.app_proto) {
+	if(!info->pkt && (TOTAL_PACKETS > num_packets || 
+		master_conntrack->layer7.app_proto)) {
 +	
 +		pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info);
 +	
@ -529,6 +537,23 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/
 +	comppattern = compile_and_cache(info->pattern, info->protocol);
 +	UNLOCK_BH(&list_lock);
 +
+	if (info->pkt) {
+		tmp_data = kmalloc(CONFIG_IP_NF_MATCH_LAYER7_MAXDATALEN, GFP_ATOMIC);
+		if(!tmp_data){
+			if (net_ratelimit())
+				printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
+			return info->invert;
+		}
+		
+		tmp_data[0] = '\0';
+		add_datastr(tmp_data, 0, app_data, appdatalen);
+		pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
+		kfree(tmp_data);
+		tmp_data = NULL;
+		
+		return (pattern_result ^ info->invert);
+	}
+	
 +	/* On the first packet of a connection, allocate space for app data */
 +	WRITE_LOCK(&ct_lock);
 +	if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) {
@ -697,9 +722,9 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/ipt_layer7.c linux-2.4.30-layer7/net/
 +
 +module_init(init);
 +module_exit(fini);
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regexp.c linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regexp.c
--- linux-2.4.30/net/ipv4/netfilter/regexp/regexp.c	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regexp.c	2005-05-03 18:37:03.000000000 -0500
+diff -urN linux.old/net/ipv4/netfilter/regexp/regexp.c linux.dev/net/ipv4/netfilter/regexp/regexp.c
+--- linux.old/net/ipv4/netfilter/regexp/regexp.c	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/net/ipv4/netfilter/regexp/regexp.c	2005-11-10 16:03:00.596599500 +0100
@@ -0,0 +1,1195 @@
 +/*
 + * regcomp and regexec -- regsub and regerror are elsewhere
@ -1896,9 +1921,9 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regexp.c linux-2.4.30-layer7/n
 +#endif
 +
 +
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regexp.h linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regexp.h
--- linux-2.4.30/net/ipv4/netfilter/regexp/regexp.h	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regexp.h	2005-05-03 18:37:03.000000000 -0500
+diff -urN linux.old/net/ipv4/netfilter/regexp/regexp.h linux.dev/net/ipv4/netfilter/regexp/regexp.h
+--- linux.old/net/ipv4/netfilter/regexp/regexp.h	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/net/ipv4/netfilter/regexp/regexp.h	2005-11-10 16:03:00.596599500 +0100
@@ -0,0 +1,40 @@
 +/*
 + * Definitions etc. for regexp(3) routines.
@ -1940,18 +1965,18 @@ diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regexp.h linux-2.4.30-layer7/n
 +void regerror(char *s);
 +
 +#endif
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regmagic.h linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regmagic.h
--- linux-2.4.30/net/ipv4/netfilter/regexp/regmagic.h	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regmagic.h	2005-05-03 18:37:03.000000000 -0500
+diff -urN linux.old/net/ipv4/netfilter/regexp/regmagic.h linux.dev/net/ipv4/netfilter/regexp/regmagic.h
+--- linux.old/net/ipv4/netfilter/regexp/regmagic.h	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/net/ipv4/netfilter/regexp/regmagic.h	2005-11-10 16:03:00.596599500 +0100
@@ -0,0 +1,5 @@
 +/*
 + * The first byte of the regexp internal "program" is actually this magic
 + * number; the start node begins in the second byte.
 + */
 +#define	MAGIC	0234
-diff -Nurp linux-2.4.30/net/ipv4/netfilter/regexp/regsub.c linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regsub.c
--- linux-2.4.30/net/ipv4/netfilter/regexp/regsub.c	1969-12-31 18:00:00.000000000 -0600
-+++ linux-2.4.30-layer7/net/ipv4/netfilter/regexp/regsub.c	2005-05-03 18:37:03.000000000 -0500
+diff -urN linux.old/net/ipv4/netfilter/regexp/regsub.c linux.dev/net/ipv4/netfilter/regexp/regsub.c
+--- linux.old/net/ipv4/netfilter/regexp/regsub.c	1970-01-01 01:00:00.000000000 +0100
+++ linux.dev/net/ipv4/netfilter/regexp/regsub.c	2005-11-10 16:03:00.596599500 +0100
@@ -0,0 +1,95 @@
 +/*
 + * regsub