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refreshed layer7 patches for 2.6.26.8, 2.6.27.21, 2.6.28.9 and 2.6.29.1

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SVN-Revision: 15502
This commit is contained in:
Jo-Philipp Wich 2009-04-30 01:31:37 +00:00
parent 2515392870
commit f6f3c4111a
8 changed files with 908 additions and 832 deletions
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75
target/linux/generic-2.6/patches-2.6.27/100-netfilter_layer7_2.17.patch → target/linux/generic-2.6/patches-2.6.26/100-netfilter_layer7_2.21.patch
View file

@ -16,7 +16,7 @@
+#endif /* _XT_LAYER7_H */
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -118,6 +118,22 @@ struct nf_conn
@@ -124,6 +124,22 @@
u_int32_t secmark;
#endif
@ -41,7 +41,7 @@
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -757,6 +757,27 @@ config NETFILTER_XT_MATCH_STATE
@@ -749,6 +749,27 @@
To compile it as a module, choose M here. If unsure, say N.
@ -71,7 +71,7 @@
depends on NETFILTER_XTABLES
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -78,6 +78,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RATEEST)
@@ -78,6 +78,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o
obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
@ -81,7 +81,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -206,6 +206,14 @@ destroy_conntrack(struct nf_conntrack *n
@@ -205,6 +205,14 @@
* too. */
nf_ct_remove_expectations(ct);
@ -98,7 +98,7 @@
BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -162,6 +162,12 @@ static int ct_seq_show(struct seq_file *
@@ -174,6 +174,12 @@
return -ENOSPC;
#endif
@ -1463,13 +1463,13 @@
+}
--- /dev/null
+++ b/net/netfilter/xt_layer7.c
@@ -0,0 +1,651 @@
@@ -0,0 +1,666 @@
+/*
+ Kernel module to match application layer (OSI layer 7) data in connections.
+
+ http://l7-filter.sf.net
+
+ (C) 2003, 2004, 2005, 2006, 2007 Matthew Strait and Ethan Sommer.
+ (C) 2003-2009 Matthew Strait and Ethan Sommer.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
@ -1506,7 +1506,7 @@
+MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
+MODULE_DESCRIPTION("iptables application layer match module");
+MODULE_ALIAS("ipt_layer7");
+MODULE_VERSION("2.19");
+MODULE_VERSION("2.21");
+
+static int maxdatalen = 2048; // this is the default
+module_param(maxdatalen, int, 0444);
@ -1879,6 +1879,9 @@
+}
+
+static bool
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+match(const struct sk_buff *skbin, const struct xt_match_param *par)
+#else
+match(const struct sk_buff *skbin,
+ const struct net_device *in,
+ const struct net_device *out,
@ -1887,11 +1890,18 @@
+ int offset,
+ unsigned int protoff,
+ bool *hotdrop)
+#endif
+{
+ /* sidestep const without getting a compiler warning... */
+ struct sk_buff * skb = (struct sk_buff *)skbin;
+
+ const struct xt_layer7_info * info = matchinfo;
+ const struct xt_layer7_info * info =
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ par->matchinfo;
+ #else
+ matchinfo;
+ #endif
+
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct nf_conn *master_conntrack, *conntrack;
+ unsigned char * app_data;
@ -1976,7 +1986,7 @@
+ the beginning of a connection */
+ if(master_conntrack->layer7.app_data == NULL){
+ spin_unlock_bh(&l7_lock);
+ return (info->invert); /* unmatched */
+ return info->invert; /* unmatched */
+ }
+
+ if(!skb->cb[0]){
@ -2000,7 +2010,8 @@
+ } else if(!strcmp(info->protocol, "unset")) {
+ pattern_result = 2;
+ DPRINTK("layer7: matched unset: not yet classified "
+ "(%d/%d packets)\n", total_acct_packets(master_conntrack), num_packets);
+ "(%d/%d packets)\n",
+ total_acct_packets(master_conntrack), num_packets);
+ /* If the regexp failed to compile, don't bother running it */
+ } else if(comppattern &&
+ regexec(comppattern, master_conntrack->layer7.app_data)){
@ -2030,27 +2041,39 @@
+ return (pattern_result ^ info->invert);
+}
+
+static bool check(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
+
+// load nf_conntrack_ipv4
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+static bool check(const struct xt_mtchk_param *par)
+{
+ if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", par->match->family);
+#else
+static bool check(const char *tablename, const void *inf,
+ const struct xt_match *match, void *matchinfo,
+ unsigned int hook_mask)
+{
+ // load nf_conntrack_ipv4
+ if (nf_ct_l3proto_try_module_get(match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", match->family);
+#endif
+ return 0;
+ }
+ return 1;
+}
+
+static void
+destroy(const struct xt_match *match, void *matchinfo)
+{
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ static void destroy(const struct xt_mtdtor_param *par)
+ {
+ nf_ct_l3proto_module_put(par->match->family);
+ }
+#else
+ static void destroy(const struct xt_match *match, void *matchinfo)
+ {
+ nf_ct_l3proto_module_put(match->family);
+}
+ }
+#endif
+
+static struct xt_match xt_layer7_match[] __read_mostly = {
+{
@ -2066,22 +2089,14 @@
+
+static void layer7_cleanup_proc(void)
+{
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ remove_proc_entry("layer7_numpackets", proc_net);
+#else
+ remove_proc_entry("layer7_numpackets", init_net.proc_net);
+#endif
+}
+
+/* register the proc file */
+static void layer7_init_proc(void)
+{
+ struct proc_dir_entry* entry;
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ entry = create_proc_entry("layer7_numpackets", 0644, proc_net);
+#else
+ entry = create_proc_entry("layer7_numpackets", 0644, init_net.proc_net);
+#endif
+ entry->read_proc = layer7_read_proc;
+ entry->write_proc = layer7_write_proc;
+}

26
target/linux/generic-2.6/patches-2.6.26/101-netfilter_layer7_pktmatch.patch
View file

@ -1,6 +1,6 @@
--- a/include/linux/netfilter/xt_layer7.h
+++ b/include/linux/netfilter/xt_layer7.h
@@ -8,6 +8,7 @@ struct xt_layer7_info {
@@ -8,6 +8,7 @@
char protocol[MAX_PROTOCOL_LEN];
char pattern[MAX_PATTERN_LEN];
u_int8_t invert;
@ -10,7 +10,7 @@
#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
@@ -314,34 +314,36 @@
}
/* add the new app data to the conntrack. Return number of bytes added. */
@ -26,7 +26,7 @@
- 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. */
@ -43,25 +43,25 @@
}
}
+ target[length+offset] = '\0';
+
+ return length;
+}
- 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 nf_conn * 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;
}
@@ -411,7 +413,7 @@ match(const struct sk_buff *skbin,
const struct xt_layer7_info * info = matchinfo;
@@ -438,7 +440,7 @@
enum ip_conntrack_info master_ctinfo, ctinfo;
struct nf_conn *master_conntrack, *conntrack;
- unsigned char * app_data;
@ -69,18 +69,18 @@
unsigned int pattern_result, appdatalen;
regexp * comppattern;
@@ -439,8 +441,8 @@ match(const struct sk_buff *skbin,
@@ -466,8 +468,8 @@
master_conntrack = master_ct(master_conntrack);
/* if we've classified it or seen too many packets */
- if(TOTAL_PACKETS > num_packets ||
- if(total_acct_packets(master_conntrack) > 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);
@@ -473,6 +475,25 @@ match(const struct sk_buff *skbin,
@@ -500,6 +502,25 @@
/* the return value gets checked later, when we're ready to use it */
comppattern = compile_and_cache(info->pattern, info->protocol);
@ -104,5 +104,5 @@
+ }
+
/* On the first packet of a connection, allocate space for app data */
if(TOTAL_PACKETS == 1 && !skb->cb[0] &&
if(total_acct_packets(master_conntrack) == 1 && !skb->cb[0] &&
!master_conntrack->layer7.app_data){

1431
target/linux/generic-2.6/patches-2.6.26/100-netfilter_layer7_2.17.patch → target/linux/generic-2.6/patches-2.6.27/100-netfilter_layer7_2.21.patch
View file

File diff suppressed because it is too large Load diff

12
target/linux/generic-2.6/patches-2.6.27/101-netfilter_layer7_pktmatch.patch
View file

@ -1,6 +1,6 @@
--- a/include/linux/netfilter/xt_layer7.h
+++ b/include/linux/netfilter/xt_layer7.h
@@ -8,6 +8,7 @@ struct xt_layer7_info {
@@ -8,6 +8,7 @@
char protocol[MAX_PROTOCOL_LEN];
char pattern[MAX_PATTERN_LEN];
u_int8_t invert;
@ -10,7 +10,7 @@
#endif /* _XT_LAYER7_H */
--- a/net/netfilter/xt_layer7.c
+++ b/net/netfilter/xt_layer7.c
@@ -314,33 +314,35 @@ static int match_no_append(struct nf_con
@@ -314,33 +314,35 @@
}
/* add the new app data to the conntrack. Return number of bytes added. */
@ -60,8 +60,8 @@
return length;
}
@@ -428,7 +430,7 @@ match(const struct sk_buff *skbin,
const struct xt_layer7_info * info = matchinfo;
@@ -438,7 +440,7 @@
enum ip_conntrack_info master_ctinfo, ctinfo;
struct nf_conn *master_conntrack, *conntrack;
- unsigned char * app_data;
@ -69,7 +69,7 @@
unsigned int pattern_result, appdatalen;
regexp * comppattern;
@@ -456,8 +458,8 @@ match(const struct sk_buff *skbin,
@@ -466,8 +468,8 @@
master_conntrack = master_ct(master_conntrack);
/* if we've classified it or seen too many packets */
@ -80,7 +80,7 @@
pattern_result = match_no_append(conntrack, master_conntrack,
ctinfo, master_ctinfo, info);
@@ -490,6 +492,25 @@ match(const struct sk_buff *skbin,
@@ -500,6 +502,25 @@
/* the return value gets checked later, when we're ready to use it */
comppattern = compile_and_cache(info->pattern, info->protocol);

75
target/linux/generic-2.6/patches-2.6.28/100-netfilter_layer7_2.17.patch → target/linux/generic-2.6/patches-2.6.28/100-netfilter_layer7_2.21.patch
View file

@ -16,7 +16,7 @@
+#endif /* _XT_LAYER7_H */
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -118,6 +118,22 @@ struct nf_conn
@@ -118,6 +118,22 @@
u_int32_t secmark;
#endif
@ -41,7 +41,7 @@
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -795,6 +795,27 @@ config NETFILTER_XT_MATCH_STATE
@@ -795,6 +795,27 @@
To compile it as a module, choose M here. If unsure, say N.
@ -71,7 +71,7 @@
depends on NETFILTER_ADVANCED
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -84,6 +84,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT)
@@ -84,6 +84,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o
obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
@ -81,7 +81,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -201,6 +201,14 @@ destroy_conntrack(struct nf_conntrack *n
@@ -201,6 +201,14 @@
* too. */
nf_ct_remove_expectations(ct);
@ -98,7 +98,7 @@
BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -165,6 +165,12 @@ static int ct_seq_show(struct seq_file *
@@ -165,6 +165,12 @@
return -ENOSPC;
#endif
@ -1463,13 +1463,13 @@
+}
--- /dev/null
+++ b/net/netfilter/xt_layer7.c
@@ -0,0 +1,651 @@
@@ -0,0 +1,666 @@
+/*
+ Kernel module to match application layer (OSI layer 7) data in connections.
+
+ http://l7-filter.sf.net
+
+ (C) 2003, 2004, 2005, 2006, 2007 Matthew Strait and Ethan Sommer.
+ (C) 2003-2009 Matthew Strait and Ethan Sommer.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
@ -1506,7 +1506,7 @@
+MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
+MODULE_DESCRIPTION("iptables application layer match module");
+MODULE_ALIAS("ipt_layer7");
+MODULE_VERSION("2.19");
+MODULE_VERSION("2.21");
+
+static int maxdatalen = 2048; // this is the default
+module_param(maxdatalen, int, 0444);
@ -1879,6 +1879,9 @@
+}
+
+static bool
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+match(const struct sk_buff *skbin, const struct xt_match_param *par)
+#else
+match(const struct sk_buff *skbin,
+ const struct net_device *in,
+ const struct net_device *out,
@ -1887,11 +1890,18 @@
+ int offset,
+ unsigned int protoff,
+ bool *hotdrop)
+#endif
+{
+ /* sidestep const without getting a compiler warning... */
+ struct sk_buff * skb = (struct sk_buff *)skbin;
+
+ const struct xt_layer7_info * info = matchinfo;
+ const struct xt_layer7_info * info =
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ par->matchinfo;
+ #else
+ matchinfo;
+ #endif
+
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct nf_conn *master_conntrack, *conntrack;
+ unsigned char * app_data;
@ -1976,7 +1986,7 @@
+ the beginning of a connection */
+ if(master_conntrack->layer7.app_data == NULL){
+ spin_unlock_bh(&l7_lock);
+ return (info->invert); /* unmatched */
+ return info->invert; /* unmatched */
+ }
+
+ if(!skb->cb[0]){
@ -2000,7 +2010,8 @@
+ } else if(!strcmp(info->protocol, "unset")) {
+ pattern_result = 2;
+ DPRINTK("layer7: matched unset: not yet classified "
+ "(%d/%d packets)\n", total_acct_packets(master_conntrack), num_packets);
+ "(%d/%d packets)\n",
+ total_acct_packets(master_conntrack), num_packets);
+ /* If the regexp failed to compile, don't bother running it */
+ } else if(comppattern &&
+ regexec(comppattern, master_conntrack->layer7.app_data)){
@ -2030,27 +2041,39 @@
+ return (pattern_result ^ info->invert);
+}
+
+static bool check(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
+
+// load nf_conntrack_ipv4
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+static bool check(const struct xt_mtchk_param *par)
+{
+ if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", par->match->family);
+#else
+static bool check(const char *tablename, const void *inf,
+ const struct xt_match *match, void *matchinfo,
+ unsigned int hook_mask)
+{
+ // load nf_conntrack_ipv4
+ if (nf_ct_l3proto_try_module_get(match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", match->family);
+#endif
+ return 0;
+ }
+ return 1;
+}
+
+static void
+destroy(const struct xt_match *match, void *matchinfo)
+{
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ static void destroy(const struct xt_mtdtor_param *par)
+ {
+ nf_ct_l3proto_module_put(par->match->family);
+ }
+#else
+ static void destroy(const struct xt_match *match, void *matchinfo)
+ {
+ nf_ct_l3proto_module_put(match->family);
+}
+ }
+#endif
+
+static struct xt_match xt_layer7_match[] __read_mostly = {
+{
@ -2066,22 +2089,14 @@
+
+static void layer7_cleanup_proc(void)
+{
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ remove_proc_entry("layer7_numpackets", proc_net);
+#else
+ remove_proc_entry("layer7_numpackets", init_net.proc_net);
+#endif
+}
+
+/* register the proc file */
+static void layer7_init_proc(void)
+{
+ struct proc_dir_entry* entry;
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ entry = create_proc_entry("layer7_numpackets", 0644, proc_net);
+#else
+ entry = create_proc_entry("layer7_numpackets", 0644, init_net.proc_net);
+#endif
+ entry->read_proc = layer7_read_proc;
+ entry->write_proc = layer7_write_proc;
+}

12
target/linux/generic-2.6/patches-2.6.28/101-netfilter_layer7_pktmatch.patch
View file

@ -1,6 +1,6 @@
--- a/include/linux/netfilter/xt_layer7.h
+++ b/include/linux/netfilter/xt_layer7.h
@@ -8,6 +8,7 @@ struct xt_layer7_info {
@@ -8,6 +8,7 @@
char protocol[MAX_PROTOCOL_LEN];
char pattern[MAX_PATTERN_LEN];
u_int8_t invert;
@ -10,7 +10,7 @@
#endif /* _XT_LAYER7_H */
--- a/net/netfilter/xt_layer7.c
+++ b/net/netfilter/xt_layer7.c
@@ -314,33 +314,35 @@ static int match_no_append(struct nf_con
@@ -314,33 +314,35 @@
}
/* add the new app data to the conntrack. Return number of bytes added. */
@ -60,8 +60,8 @@
return length;
}
@@ -428,7 +430,7 @@ match(const struct sk_buff *skbin,
const struct xt_layer7_info * info = matchinfo;
@@ -438,7 +440,7 @@
enum ip_conntrack_info master_ctinfo, ctinfo;
struct nf_conn *master_conntrack, *conntrack;
- unsigned char * app_data;
@ -69,7 +69,7 @@
unsigned int pattern_result, appdatalen;
regexp * comppattern;
@@ -456,8 +458,8 @@ match(const struct sk_buff *skbin,
@@ -466,8 +468,8 @@
master_conntrack = master_ct(master_conntrack);
/* if we've classified it or seen too many packets */
@ -80,7 +80,7 @@
pattern_result = match_no_append(conntrack, master_conntrack,
ctinfo, master_ctinfo, info);
@@ -490,6 +492,25 @@ match(const struct sk_buff *skbin,
@@ -500,6 +502,25 @@
/* the return value gets checked later, when we're ready to use it */
comppattern = compile_and_cache(info->pattern, info->protocol);

75
target/linux/generic-2.6/patches-2.6.29/100-netfilter_layer7_2.17.patch → target/linux/generic-2.6/patches-2.6.29/100-netfilter_layer7_2.21.patch
View file

@ -16,7 +16,7 @@
+#endif /* _XT_LAYER7_H */
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -118,6 +118,22 @@ struct nf_conn
@@ -118,6 +118,22 @@
u_int32_t secmark;
#endif
@ -41,7 +41,7 @@
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -794,6 +794,27 @@ config NETFILTER_XT_MATCH_STATE
@@ -794,6 +794,27 @@
To compile it as a module, choose M here. If unsure, say N.
@ -71,7 +71,7 @@
depends on NETFILTER_ADVANCED
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -84,6 +84,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT)
@@ -84,6 +84,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o
obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
@ -81,7 +81,7 @@
obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -202,6 +202,14 @@ destroy_conntrack(struct nf_conntrack *n
@@ -202,6 +202,14 @@
* too. */
nf_ct_remove_expectations(ct);
@ -98,7 +98,7 @@
BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -165,6 +165,12 @@ static int ct_seq_show(struct seq_file *
@@ -165,6 +165,12 @@
return -ENOSPC;
#endif
@ -1463,13 +1463,13 @@
+}
--- /dev/null
+++ b/net/netfilter/xt_layer7.c
@@ -0,0 +1,651 @@
@@ -0,0 +1,666 @@
+/*
+ Kernel module to match application layer (OSI layer 7) data in connections.
+
+ http://l7-filter.sf.net
+
+ (C) 2003, 2004, 2005, 2006, 2007 Matthew Strait and Ethan Sommer.
+ (C) 2003-2009 Matthew Strait and Ethan Sommer.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
@ -1506,7 +1506,7 @@
+MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
+MODULE_DESCRIPTION("iptables application layer match module");
+MODULE_ALIAS("ipt_layer7");
+MODULE_VERSION("2.19");
+MODULE_VERSION("2.21");
+
+static int maxdatalen = 2048; // this is the default
+module_param(maxdatalen, int, 0444);
@ -1879,6 +1879,9 @@
+}
+
+static bool
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+match(const struct sk_buff *skbin, const struct xt_match_param *par)
+#else
+match(const struct sk_buff *skbin,
+ const struct net_device *in,
+ const struct net_device *out,
@ -1887,11 +1890,18 @@
+ int offset,
+ unsigned int protoff,
+ bool *hotdrop)
+#endif
+{
+ /* sidestep const without getting a compiler warning... */
+ struct sk_buff * skb = (struct sk_buff *)skbin;
+
+ const struct xt_layer7_info * info = matchinfo;
+ const struct xt_layer7_info * info =
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ par->matchinfo;
+ #else
+ matchinfo;
+ #endif
+
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct nf_conn *master_conntrack, *conntrack;
+ unsigned char * app_data;
@ -1976,7 +1986,7 @@
+ the beginning of a connection */
+ if(master_conntrack->layer7.app_data == NULL){
+ spin_unlock_bh(&l7_lock);
+ return (info->invert); /* unmatched */
+ return info->invert; /* unmatched */
+ }
+
+ if(!skb->cb[0]){
@ -2000,7 +2010,8 @@
+ } else if(!strcmp(info->protocol, "unset")) {
+ pattern_result = 2;
+ DPRINTK("layer7: matched unset: not yet classified "
+ "(%d/%d packets)\n", total_acct_packets(master_conntrack), num_packets);
+ "(%d/%d packets)\n",
+ total_acct_packets(master_conntrack), num_packets);
+ /* If the regexp failed to compile, don't bother running it */
+ } else if(comppattern &&
+ regexec(comppattern, master_conntrack->layer7.app_data)){
@ -2030,27 +2041,39 @@
+ return (pattern_result ^ info->invert);
+}
+
+static bool check(const char *tablename,
+ const void *inf,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
+
+// load nf_conntrack_ipv4
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+static bool check(const struct xt_mtchk_param *par)
+{
+ if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", par->match->family);
+#else
+static bool check(const char *tablename, const void *inf,
+ const struct xt_match *match, void *matchinfo,
+ unsigned int hook_mask)
+{
+ // load nf_conntrack_ipv4
+ if (nf_ct_l3proto_try_module_get(match->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", match->family);
+#endif
+ return 0;
+ }
+ return 1;
+}
+
+static void
+destroy(const struct xt_match *match, void *matchinfo)
+{
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
+ static void destroy(const struct xt_mtdtor_param *par)
+ {
+ nf_ct_l3proto_module_put(par->match->family);
+ }
+#else
+ static void destroy(const struct xt_match *match, void *matchinfo)
+ {
+ nf_ct_l3proto_module_put(match->family);
+}
+ }
+#endif
+
+static struct xt_match xt_layer7_match[] __read_mostly = {
+{
@ -2066,22 +2089,14 @@
+
+static void layer7_cleanup_proc(void)
+{
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ remove_proc_entry("layer7_numpackets", proc_net);
+#else
+ remove_proc_entry("layer7_numpackets", init_net.proc_net);
+#endif
+}
+
+/* register the proc file */
+static void layer7_init_proc(void)
+{
+ struct proc_dir_entry* entry;
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
+ entry = create_proc_entry("layer7_numpackets", 0644, proc_net);
+#else
+ entry = create_proc_entry("layer7_numpackets", 0644, init_net.proc_net);
+#endif
+ entry->read_proc = layer7_read_proc;
+ entry->write_proc = layer7_write_proc;
+}

12
target/linux/generic-2.6/patches-2.6.29/101-netfilter_layer7_pktmatch.patch
View file

@ -1,6 +1,6 @@
--- a/include/linux/netfilter/xt_layer7.h
+++ b/include/linux/netfilter/xt_layer7.h
@@ -8,6 +8,7 @@ struct xt_layer7_info {
@@ -8,6 +8,7 @@
char protocol[MAX_PROTOCOL_LEN];
char pattern[MAX_PATTERN_LEN];
u_int8_t invert;
@ -10,7 +10,7 @@
#endif /* _XT_LAYER7_H */
--- a/net/netfilter/xt_layer7.c
+++ b/net/netfilter/xt_layer7.c
@@ -314,33 +314,35 @@ static int match_no_append(struct nf_con
@@ -314,33 +314,35 @@
}
/* add the new app data to the conntrack. Return number of bytes added. */
@ -60,8 +60,8 @@
return length;
}
@@ -428,7 +430,7 @@ match(const struct sk_buff *skbin,
const struct xt_layer7_info * info = matchinfo;
@@ -438,7 +440,7 @@
enum ip_conntrack_info master_ctinfo, ctinfo;
struct nf_conn *master_conntrack, *conntrack;
- unsigned char * app_data;
@ -69,7 +69,7 @@
unsigned int pattern_result, appdatalen;
regexp * comppattern;
@@ -456,8 +458,8 @@ match(const struct sk_buff *skbin,
@@ -466,8 +468,8 @@
master_conntrack = master_ct(master_conntrack);
/* if we've classified it or seen too many packets */
@ -80,7 +80,7 @@
pattern_result = match_no_append(conntrack, master_conntrack,
ctinfo, master_ctinfo, info);
@@ -490,6 +492,25 @@ match(const struct sk_buff *skbin,
@@ -500,6 +502,25 @@
/* the return value gets checked later, when we're ready to use it */
comppattern = compile_and_cache(info->pattern, info->protocol);