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[kernel] netfilter: remove ipt_limit (CONFIG_IP_NF_MATCH_TIME) superseeded by xt_limi...
[openwrt.git]
/
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
8e8395c
..
be2dff8
100644
(file)
--- 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 @@ struct xt_layer7_info {
char protocol[MAX_PROTOCOL_LEN];
char protocol[MAX_PROTOCOL_LEN];
- char invert:1;
char pattern[MAX_PATTERN_LEN];
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 @@ static int match_no_append(struct nf_con
}
/* add the new app data to the conntrack. Return number of bytes added. */
-static int add_data(struct nf_conn * master_conntrack,
}
/* 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;
-
+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(!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. */
/* 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') {
- 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] =
- 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';
length++;
}
}
+ target[length+offset] = '\0';
-+
++
+ return length;
+}
+ 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,
- 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;
+{
+ int length;
@@
-63,29
+61,29
@@
Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
return length;
}
return length;
}
-@@ -343,7 +344,7 @@
+@@ -411,7 +413,7 @@ match(const struct sk_buff *skbin,
+ const struct xt_layer7_info * info = matchinfo;
enum ip_conntrack_info master_ctinfo, ctinfo;
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;
- 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 @@ match(const struct sk_buff *skbin,
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 = 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 @@ match(const struct sk_buff *skbin,
+ /* the return value gets checked later, when we're ready to use it */
comppattern = compile_and_cache(info->pattern, info->protocol);
comppattern = compile_and_cache(info->pattern, info->protocol);
- spin_unlock_bh(&list_lock);
+ if (info->pkt) {
+ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
+ 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);
+ 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;
+ 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 */
+
+ 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)
{
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