X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/58242e54174506f2426d122a1b0d4c1abd0b755f..cf68954004dfda5c4c49dcb79bda1753135b2a6c:/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch

diff --git a/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch b/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch
index 8e8395cb5..167d578cf 100644
--- a/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch
+++ b/target/linux/generic-2.6/patches-2.6.23/101-netfilter_layer7_pktmatch.patch
@@ -1,36 +1,33 @@
-Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h
-===================================================================
---- linux-2.6.23-rc6.orig/include/linux/netfilter_ipv4/ipt_layer7.h	2007-09-21 16:23:59.000000000 +0800
-+++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h	2007-09-21 16:24:00.000000000 +0800
-@@ -21,6 +21,7 @@
+--- a/include/linux/netfilter/xt_layer7.h
++++ b/include/linux/netfilter/xt_layer7.h
+@@ -8,6 +8,7 @@
      char protocol[MAX_PROTOCOL_LEN];
-     char invert:1;
      char pattern[MAX_PATTERN_LEN];
-+    char pkt;
+     u_int8_t invert;
++    u_int8_t pkt;
  };
  
- #endif /* _IPT_LAYER7_H */
-Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
-===================================================================
---- linux-2.6.23-rc6.orig/net/ipv4/netfilter/ipt_layer7.c	2007-09-21 16:23:59.000000000 +0800
-+++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c	2007-09-21 16:24:00.000000000 +0800
-@@ -300,33 +300,34 @@
+ #endif /* _XT_LAYER7_H */
+--- a/net/netfilter/xt_layer7.c
++++ b/net/netfilter/xt_layer7.c
+@@ -297,34 +297,36 @@
  }
  
  /* add the new app data to the conntrack.  Return number of bytes added. */
 -static int add_data(struct nf_conn * master_conntrack,
--			char * app_data, int appdatalen)
+-                    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;
 -
--	// This is a fix for a race condition by Deti Fliegl. However, I'm not
--	// clear on whether the race condition exists or whether this really
--	// fixes it.  I might just be being dense... Anyway, if it's not really
--	// a fix, all it does is waste a very small amount of time.
+-	/* This is a fix for a race condition by Deti Fliegl. However, I'm not 
+-	   clear on whether the race condition exists or whether this really 
+-	   fixes it.  I might just be being dense... Anyway, if it's not really 
+-	   a fix, all it does is waste a very small amount of time. */
 -	if(!master_conntrack->layer7.app_data) return 0;
-+	if(!target) return 0;
++	
++	if (!target) return 0;
  
  	/* Strip nulls. Make everything lower case (our regex lib doesn't
  	do case insensitivity).  Add it to the end of the current data. */
@@ -38,15 +35,16 @@ Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
 -		   i < appdatalen; i++) {
 +	for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
  		if(app_data[i] != '\0') {
+ 			/* the kernel version of tolower mungs 'upper ascii' */
 -			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];
+ 				isascii(app_data[i])? 
+ 					tolower(app_data[i]) : app_data[i];
  			length++;
  		}
  	}
 +	target[length+offset] = '\0';
-+
++	
 +	return length;
 +}
  
@@ -54,7 +52,7 @@ Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
 -	master_conntrack->layer7.app_data_len = length + oldlength;
 +/* add the new app data to the conntrack.  Return number of bytes added. */
 +static int add_data(struct nf_conn * master_conntrack,
-+			char * app_data, int appdatalen)
++                    char * app_data, int appdatalen)
 +{
 +	int length;
  
@@ -63,29 +61,29 @@ Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
  	return length;
  }
  
-@@ -343,7 +344,7 @@
+@@ -411,7 +413,7 @@
+ 	const struct xt_layer7_info * info = matchinfo;
  	enum ip_conntrack_info master_ctinfo, ctinfo;
- 	struct nf_conn *master_conntrack;
- 	struct nf_conn *conntrack;
+ 	struct nf_conn *master_conntrack, *conntrack;
 -	unsigned char * app_data;
 +	unsigned char *app_data, *tmp_data;
  	unsigned int pattern_result, appdatalen;
  	regexp * comppattern;
  
-@@ -365,8 +366,8 @@
+@@ -439,8 +441,8 @@
  		master_conntrack = master_ct(master_conntrack);
  
  	/* 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);
++	   master_conntrack->layer7.app_proto)) {
  
-@@ -396,6 +397,23 @@
+ 		pattern_result = match_no_append(conntrack, master_conntrack, 
+ 						 ctinfo, master_ctinfo, info);
+@@ -473,6 +475,25 @@
+ 	/* the return value gets checked later, when we're ready to use it */
  	comppattern = compile_and_cache(info->pattern, info->protocol);
- 	spin_unlock_bh(&list_lock);
  
 +	if (info->pkt) {
 +		tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
@@ -98,12 +96,14 @@ Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
 +		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;
++		spin_unlock_bh(&l7_lock);
 +
 +		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) {
+ 	if(TOTAL_PACKETS == 1 && !skb->cb[0] && 
+ 	   !master_conntrack->layer7.app_data){