add layer7 patterns to iptables-mod-filter

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2519 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/iptables/files/l7/http.pat

@@ -0,0 +1,28 @@
+# HTTP - HyperText Transfer Protocol - RFC 2616
+# Pattern quality: great notsofast
+# Usually runs on port 80
+#
+# This pattern has been tested and is believed to work well.  If it does not
+# work for you, or you believe it could be improved, please post to 
+# l7-filter-developers@lists.sf.net .  This list may be subscribed to at
+# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers
+#
+# this intentionally catches the response from the server
+# rather than the request so that other protocols which use
+# http (like kazaa) can be caught based on specific http requests
+# regardless of the ordering of filters...
+# also matches posts
+
+# Sites that serve really long cookies may break this by pushing the
+# server response too far away from the beginning of the connection. To
+# fix this, increase the kernel's data buffer length.
+
+http
+# Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF (rfc 2616)
+# As specified in rfc 2616 a status code is preceeded and followed by a
+# space. 
+http/(0\.9|1\.0|1\.1) [1-5][0-9][0-9] [\x09-\x0d -~]*(connection:|content-type:|content-length:|date:)|post [\x09-\x0d -~]* http/[01]\.[019]
+# A slightly faster version that might be good enough:
+#http/(0\.9|1\.0|1\.1) [1-5][0-9][0-9]|post [\x09-\x0d -~]* http/[01]\.[019]
+# old pattern(s):
+#(http[\x09-\x0d -~]*(200 ok|302 |304 )[\x09-\x0d -~]*(connection:|content-type:|content-length:))|^(post [\x09-\x0d -~]* http/)