update layer7 (forward port from whiterussian)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2538 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 82 insertions, 57 deletions

diff --git a/target/linux/linux-2.4/patches/generic/602-netfilter_layer7.patch b/target/linux/linux-2.4/patches/generic/602-netfilter_layer7_1.5nbd.patch
index 55e817aa4..1b0e11a11 100644
--- a/target/linux/linux-2.4/patches/generic/602-netfilter_layer7.patch
+++ b/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