mirror of
https://github.com/openwrt/openwrt.git
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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
SVN-Revision: 15502
This commit is contained in:
Jo-Philipp Wich
parent
2515392870
commit
f6f3c4111a
@ -16,7 +16,7 @@
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+#endif /* _XT_LAYER7_H */
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--- a/include/net/netfilter/nf_conntrack.h
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+++ b/include/net/netfilter/nf_conntrack.h
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@@ -118,6 +118,22 @@ struct nf_conn
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@@ -124,6 +124,22 @@
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u_int32_t secmark;
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#endif
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@ -41,7 +41,7 @@
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--- a/net/netfilter/Kconfig
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+++ b/net/netfilter/Kconfig
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@@ -757,6 +757,27 @@ config NETFILTER_XT_MATCH_STATE
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@@ -749,6 +749,27 @@
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To compile it as a module, choose M here. If unsure, say N.
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@ -71,7 +71,7 @@
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depends on NETFILTER_XTABLES
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--- a/net/netfilter/Makefile
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+++ b/net/netfilter/Makefile
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@@ -78,6 +78,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RATEEST)
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@@ -78,6 +78,7 @@
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obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
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@ -81,7 +81,7 @@
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obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
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--- a/net/netfilter/nf_conntrack_core.c
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+++ b/net/netfilter/nf_conntrack_core.c
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@@ -206,6 +206,14 @@ destroy_conntrack(struct nf_conntrack *n
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@@ -205,6 +205,14 @@
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* too. */
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nf_ct_remove_expectations(ct);
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@ -98,7 +98,7 @@
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BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
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--- a/net/netfilter/nf_conntrack_standalone.c
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+++ b/net/netfilter/nf_conntrack_standalone.c
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@@ -162,6 +162,12 @@ static int ct_seq_show(struct seq_file *
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@@ -174,6 +174,12 @@
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return -ENOSPC;
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#endif
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@ -1463,13 +1463,13 @@
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+}
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--- /dev/null
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+++ b/net/netfilter/xt_layer7.c
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@@ -0,0 +1,651 @@
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@@ -0,0 +1,666 @@
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+/*
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+ Kernel module to match application layer (OSI layer 7) data in connections.
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+
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+ http://l7-filter.sf.net
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+
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+ (C) 2003, 2004, 2005, 2006, 2007 Matthew Strait and Ethan Sommer.
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+ (C) 2003-2009 Matthew Strait and Ethan Sommer.
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+
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+ This program is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU General Public License
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@ -1506,7 +1506,7 @@
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+MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
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+MODULE_DESCRIPTION("iptables application layer match module");
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+MODULE_ALIAS("ipt_layer7");
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+MODULE_VERSION("2.19");
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+MODULE_VERSION("2.21");
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+
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+static int maxdatalen = 2048; // this is the default
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+module_param(maxdatalen, int, 0444);
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@ -1879,6 +1879,9 @@
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+}
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+
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+static bool
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
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+match(const struct sk_buff *skbin, const struct xt_match_param *par)
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+#else
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+match(const struct sk_buff *skbin,
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+ const struct net_device *in,
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+ const struct net_device *out,
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@ -1887,11 +1890,18 @@
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+ int offset,
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+ unsigned int protoff,
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+ bool *hotdrop)
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+#endif
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+{
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+ /* sidestep const without getting a compiler warning... */
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+ struct sk_buff * skb = (struct sk_buff *)skbin;
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+
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+ const struct xt_layer7_info * info = matchinfo;
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+ const struct xt_layer7_info * info =
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+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
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+ par->matchinfo;
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+ #else
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+ matchinfo;
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+ #endif
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+
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+ enum ip_conntrack_info master_ctinfo, ctinfo;
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+ struct nf_conn *master_conntrack, *conntrack;
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+ unsigned char * app_data;
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@ -1976,7 +1986,7 @@
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+ the beginning of a connection */
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+ if(master_conntrack->layer7.app_data == NULL){
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+ spin_unlock_bh(&l7_lock);
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+ return (info->invert); /* unmatched */
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+ return info->invert; /* unmatched */
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+ }
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+
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+ if(!skb->cb[0]){
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@ -2000,7 +2010,8 @@
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+ } else if(!strcmp(info->protocol, "unset")) {
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+ pattern_result = 2;
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+ DPRINTK("layer7: matched unset: not yet classified "
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+ "(%d/%d packets)\n", total_acct_packets(master_conntrack), num_packets);
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+ "(%d/%d packets)\n",
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+ total_acct_packets(master_conntrack), num_packets);
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+ /* If the regexp failed to compile, don't bother running it */
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+ } else if(comppattern &&
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+ regexec(comppattern, master_conntrack->layer7.app_data)){
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@ -2030,27 +2041,39 @@
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+ return (pattern_result ^ info->invert);
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+}
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+
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+static bool check(const char *tablename,
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+ const void *inf,
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+ const struct xt_match *match,
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+ void *matchinfo,
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+ unsigned int hook_mask)
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+
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+// load nf_conntrack_ipv4
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
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+static bool check(const struct xt_mtchk_param *par)
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+{
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+ if (nf_ct_l3proto_try_module_get(par->match->family) < 0) {
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+ printk(KERN_WARNING "can't load conntrack support for "
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+ "proto=%d\n", par->match->family);
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+#else
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+static bool check(const char *tablename, const void *inf,
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+ const struct xt_match *match, void *matchinfo,
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+ unsigned int hook_mask)
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+{
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+ // load nf_conntrack_ipv4
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+ if (nf_ct_l3proto_try_module_get(match->family) < 0) {
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+ printk(KERN_WARNING "can't load conntrack support for "
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+ "proto=%d\n", match->family);
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+#endif
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+ return 0;
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+ }
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+ return 1;
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+}
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+
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+static void
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+destroy(const struct xt_match *match, void *matchinfo)
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+{
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+ nf_ct_l3proto_module_put(match->family);
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+}
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+
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
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+ static void destroy(const struct xt_mtdtor_param *par)
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+ {
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+ nf_ct_l3proto_module_put(par->match->family);
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+ }
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+#else
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+ static void destroy(const struct xt_match *match, void *matchinfo)
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+ {
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+ nf_ct_l3proto_module_put(match->family);
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+ }
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+#endif
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+
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+static struct xt_match xt_layer7_match[] __read_mostly = {
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+{
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@ -2066,22 +2089,14 @@
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+
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+static void layer7_cleanup_proc(void)
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+{
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+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
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+ remove_proc_entry("layer7_numpackets", proc_net);
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+#else
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+ remove_proc_entry("layer7_numpackets", init_net.proc_net);
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+#endif
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+}
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+
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+/* register the proc file */
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+static void layer7_init_proc(void)
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+{
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+ struct proc_dir_entry* entry;
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+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,23)
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+ entry = create_proc_entry("layer7_numpackets", 0644, proc_net);
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+#else
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+ entry = create_proc_entry("layer7_numpackets", 0644, init_net.proc_net);
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+#endif
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+ entry->read_proc = layer7_read_proc;
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+ entry->write_proc = layer7_write_proc;
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+}
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@ -1,6 +1,6 @@
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--- a/include/linux/netfilter/xt_layer7.h
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+++ b/include/linux/netfilter/xt_layer7.h
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@@ -8,6 +8,7 @@ struct xt_layer7_info {
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@@ -8,6 +8,7 @@
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char protocol[MAX_PROTOCOL_LEN];
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char pattern[MAX_PATTERN_LEN];
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u_int8_t invert;
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@ -10,7 +10,7 @@
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#endif /* _XT_LAYER7_H */
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--- a/net/netfilter/xt_layer7.c
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+++ b/net/netfilter/xt_layer7.c
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@@ -297,34 +297,36 @@ static int match_no_append(struct nf_con
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@@ -314,34 +314,36 @@
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}
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/* add the new app data to the conntrack. Return number of bytes added. */
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@ -21,12 +21,12 @@
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int length = 0, i;
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- int oldlength = master_conntrack->layer7.app_data_len;
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- /* This is a fix for a race condition by Deti Fliegl. However, I'm not
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- clear on whether the race condition exists or whether this really
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- fixes it. I might just be being dense... Anyway, if it's not really
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- /* This is a fix for a race condition by Deti Fliegl. However, I'm not
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- clear on whether the race condition exists or whether this really
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- fixes it. I might just be being dense... Anyway, if it's not really
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- a fix, all it does is waste a very small amount of time. */
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- if(!master_conntrack->layer7.app_data) return 0;
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+ if (!target) return 0;
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+ if(!target) return 0;
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/* Strip nulls. Make everything lower case (our regex lib doesn't
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do case insensitivity). Add it to the end of the current data. */
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@ -37,31 +37,31 @@
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/* the kernel version of tolower mungs 'upper ascii' */
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- master_conntrack->layer7.app_data[length+oldlength] =
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+ target[length+offset] =
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isascii(app_data[i])?
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isascii(app_data[i])?
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tolower(app_data[i]) : app_data[i];
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length++;
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}
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}
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+ target[length+offset] = '\0';
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+
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+ return length;
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+}
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- master_conntrack->layer7.app_data[length+oldlength] = '\0';
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- master_conntrack->layer7.app_data_len = length + oldlength;
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+ return length;
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+}
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+/* add the new app data to the conntrack. Return number of bytes added. */
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+static int add_data(struct nf_conn * master_conntrack,
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+ char * app_data, int appdatalen)
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+{
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+ int length;
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+
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+ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
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+ master_conntrack->layer7.app_data_len += length;
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return length;
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}
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@@ -411,7 +413,7 @@ match(const struct sk_buff *skbin,
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const struct xt_layer7_info * info = matchinfo;
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@@ -438,7 +440,7 @@
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enum ip_conntrack_info master_ctinfo, ctinfo;
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struct nf_conn *master_conntrack, *conntrack;
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- unsigned char * app_data;
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@ -69,18 +69,18 @@
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unsigned int pattern_result, appdatalen;
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regexp * comppattern;
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@@ -439,8 +441,8 @@ match(const struct sk_buff *skbin,
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@@ -466,8 +468,8 @@
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master_conntrack = master_ct(master_conntrack);
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/* if we've classified it or seen too many packets */
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- if(TOTAL_PACKETS > num_packets ||
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- if(total_acct_packets(master_conntrack) > num_packets ||
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- master_conntrack->layer7.app_proto) {
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+ if(!info->pkt && (TOTAL_PACKETS > num_packets ||
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+ master_conntrack->layer7.app_proto)) {
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pattern_result = match_no_append(conntrack, master_conntrack,
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pattern_result = match_no_append(conntrack, master_conntrack,
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ctinfo, master_ctinfo, info);
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@@ -473,6 +475,25 @@ match(const struct sk_buff *skbin,
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@@ -500,6 +502,25 @@
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/* the return value gets checked later, when we're ready to use it */
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comppattern = compile_and_cache(info->pattern, info->protocol);
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@ -104,5 +104,5 @@
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+ }
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+
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/* On the first packet of a connection, allocate space for app data */
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if(TOTAL_PACKETS == 1 && !skb->cb[0] &&
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if(total_acct_packets(master_conntrack) == 1 && !skb->cb[0] &&
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!master_conntrack->layer7.app_data){
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File diff suppressed because it is too large
Load Diff
@ -1,6 +1,6 @@
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--- a/include/linux/netfilter/xt_layer7.h
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+++ b/include/linux/netfilter/xt_layer7.h
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@@ -8,6 +8,7 @@ struct xt_layer7_info {
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@@ -8,6 +8,7 @@
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char protocol[MAX_PROTOCOL_LEN];
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char pattern[MAX_PATTERN_LEN];
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u_int8_t invert;
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@ -10,7 +10,7 @@
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#endif /* _XT_LAYER7_H */
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--- a/net/netfilter/xt_layer7.c
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+++ b/net/netfilter/xt_layer7.c
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@@ -314,33 +314,35 @@ static int match_no_append(struct nf_con
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@@ -314,33 +314,35 @@
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}
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/* add the new app data to the conntrack. Return number of bytes added. */
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@ -60,8 +60,8 @@
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return length;
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}
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@@ -428,7 +430,7 @@ match(const struct sk_buff *skbin,
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const struct xt_layer7_info * info = matchinfo;
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@@ -438,7 +440,7 @@
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enum ip_conntrack_info master_ctinfo, ctinfo;
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struct nf_conn *master_conntrack, *conntrack;
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- unsigned char * app_data;
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@ -69,7 +69,7 @@
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unsigned int pattern_result, appdatalen;
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regexp * comppattern;
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@@ -456,8 +458,8 @@ match(const struct sk_buff *skbin,
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@@ -466,8 +468,8 @@
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master_conntrack = master_ct(master_conntrack);
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/* if we've classified it or seen too many packets */
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@ -80,7 +80,7 @@
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pattern_result = match_no_append(conntrack, master_conntrack,
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ctinfo, master_ctinfo, info);
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@@ -490,6 +492,25 @@ match(const struct sk_buff *skbin,
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@@ -500,6 +502,25 @@
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/* the return value gets checked later, when we're ready to use it */
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comppattern = compile_and_cache(info->pattern, info->protocol);
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@ -16,7 +16,7 @@
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+#endif /* _XT_LAYER7_H */
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--- a/include/net/netfilter/nf_conntrack.h
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+++ b/include/net/netfilter/nf_conntrack.h
|
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@@ -118,6 +118,22 @@ struct nf_conn
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@@ -118,6 +118,22 @@
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u_int32_t secmark;
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#endif
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|
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@ -41,7 +41,7 @@
|
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|
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--- a/net/netfilter/Kconfig
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+++ b/net/netfilter/Kconfig
|
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@@ -795,6 +795,27 @@ config NETFILTER_XT_MATCH_STATE
|
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@@ -795,6 +795,27 @@
|
||||
|
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To compile it as a module, choose M here. If unsure, say N.
|
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|
||||
@ -71,7 +71,7 @@
|
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depends on NETFILTER_ADVANCED
|
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--- a/net/netfilter/Makefile
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+++ b/net/netfilter/Makefile
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@@ -84,6 +84,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT)
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@@ -84,6 +84,7 @@
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obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o
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obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
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@ -81,7 +81,7 @@
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obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
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--- a/net/netfilter/nf_conntrack_core.c
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+++ b/net/netfilter/nf_conntrack_core.c
|
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@@ -201,6 +201,14 @@ destroy_conntrack(struct nf_conntrack *n
|
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@@ -201,6 +201,14 @@
|
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* too. */
|
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nf_ct_remove_expectations(ct);
|
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|
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@ -98,7 +98,7 @@
|
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BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
|
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--- a/net/netfilter/nf_conntrack_standalone.c
|
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+++ b/net/netfilter/nf_conntrack_standalone.c
|
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@@ -165,6 +165,12 @@ static int ct_seq_show(struct seq_file *
|
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@@ -165,6 +165,12 @@
|
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return -ENOSPC;
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#endif
|
||||
|
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@ -1463,13 +1463,13 @@
|
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+}
|
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--- /dev/null
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+++ b/net/netfilter/xt_layer7.c
|
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@@ -0,0 +1,651 @@
|
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@@ -0,0 +1,666 @@
|
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+/*
|
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+ 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)
|
||||
+{
|
||||
+ nf_ct_l3proto_module_put(match->family);
|
||||
+}
|
||||
+
|
||||
+#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;
|
||||
+}
|
||||
@ -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);
|
||||
|
||||
|
||||
@ -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)
|
||||
+{
|
||||
+ nf_ct_l3proto_module_put(match->family);
|
||||
+}
|
||||
+
|
||||
+#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;
|
||||
+}
|
||||
@ -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);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user