mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2025-04-21 12:27:27 +03:00
update ipp2p to 0.8.1rc1, add it to 2.6 as well
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3463 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
@@ -1,720 +0,0 @@
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diff -urN linux-2.4.29.old/include/linux/netfilter_ipv4/ipt_ipp2p.h linux-2.4.29/include/linux/netfilter_ipv4/ipt_ipp2p.h
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--- linux-2.4.29.old/include/linux/netfilter_ipv4/ipt_ipp2p.h 1970-01-01 01:00:00.000000000 +0100
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+++ linux-2.4.29/include/linux/netfilter_ipv4/ipt_ipp2p.h 2005-03-12 00:44:17.000000000 +0100
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@@ -0,0 +1,29 @@
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+#ifndef __IPT_IPP2P_H
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+#define __IPT_IPP2P_H
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+#define IPP2P_VERSION "0.7.4"
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+
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+struct ipt_p2p_info {
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+ int cmd;
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+ int debug;
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+};
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+
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+#endif //__IPT_IPP2P_H
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+
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+#define SHORT_HAND_IPP2P 1 /* --ipp2p switch*/
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+#define SHORT_HAND_DATA 4 /* --ipp2p-data switch*/
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+#define SHORT_HAND_NONE 5 /* no short hand*/
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+
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+#define IPP2P_EDK 2
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+#define IPP2P_DATA_KAZAA 8
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+#define IPP2P_DATA_EDK 16
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+#define IPP2P_DATA_DC 32
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+#define IPP2P_DC 64
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+#define IPP2P_DATA_GNU 128
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+#define IPP2P_GNU 256
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+#define IPP2P_KAZAA 512
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+#define IPP2P_BIT 1024
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+#define IPP2P_APPLE 2048
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+#define IPP2P_SOUL 4096
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+#define IPP2P_WINMX 8192
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+#define IPP2P_ARES 16384
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+
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diff -urN linux-2.4.29.old/net/ipv4/netfilter/Config.in linux-2.4.29/net/ipv4/netfilter/Config.in
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--- linux-2.4.29.old/net/ipv4/netfilter/Config.in 2005-03-12 00:40:38.000000000 +0100
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+++ linux-2.4.29/net/ipv4/netfilter/Config.in 2005-03-12 00:42:57.000000000 +0100
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@@ -26,6 +26,7 @@
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dep_tristate ' TOS match support' CONFIG_IP_NF_MATCH_TOS $CONFIG_IP_NF_IPTABLES
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dep_tristate ' recent match support' CONFIG_IP_NF_MATCH_RECENT $CONFIG_IP_NF_IPTABLES
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dep_tristate ' ECN match support' CONFIG_IP_NF_MATCH_ECN $CONFIG_IP_NF_IPTABLES
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+ dep_tristate ' peer to peer traffic match support' CONFIG_IP_NF_MATCH_IPP2P $CONFIG_IP_NF_IPTABLES
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dep_tristate ' DSCP match support' CONFIG_IP_NF_MATCH_DSCP $CONFIG_IP_NF_IPTABLES
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diff -urN linux-2.4.29.old/net/ipv4/netfilter/ipt_ipp2p.c linux-2.4.29/net/ipv4/netfilter/ipt_ipp2p.c
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--- linux-2.4.29.old/net/ipv4/netfilter/ipt_ipp2p.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux-2.4.29/net/ipv4/netfilter/ipt_ipp2p.c 2005-03-12 00:44:02.000000000 +0100
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@@ -0,0 +1,661 @@
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+#if defined(MODVERSIONS)
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+#include <linux/modversions.h>
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+#endif
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+#include <linux/module.h>
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+#include <linux/netfilter_ipv4/ip_tables.h>
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+#include <linux/version.h>
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+#include <linux/netfilter_ipv4/ipt_ipp2p.h>
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+//#include "ipt_ipp2p.h"
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+#include <net/tcp.h>
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+#include <net/udp.h>
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+
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+#define get_u8(X,O) (*(__u8 *)(X + O))
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+#define get_u16(X,O) (*(__u16 *)(X + O))
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+#define get_u32(X,O) (*(__u32 *)(X + O))
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+
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+MODULE_AUTHOR("Eicke Friedrich <ipp2p@ipp2p.org>");
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+MODULE_DESCRIPTION("An extension to iptables to identify P2P traffic.");
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+MODULE_LICENSE("GPL");
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+
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+
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+/*Search for UDP eDonkey/eMule/Kad commands*/
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+int
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+udp_search_edk (unsigned char *haystack, int packet_len)
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+{
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+ unsigned char *t = haystack;
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+ t += 8;
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+
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+ switch (t[0]) {
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+ case 0xe3: { /*edonkey*/
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+ switch (t[1]) {
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+ /* e3 9a + 16Bytes Hash | size == 26 */
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+ case 0x9a: if (packet_len == 26) return ((IPP2P_EDK * 100) + 1);
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+ /* e3 96 xx yy zz kk | size == 14 | server status request */
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+ case 0x96: if (packet_len == 14) return ((IPP2P_EDK * 100) + 2);
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+ /* e3 a2 | size == 10 or 14 <-- recheck*/
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+ }
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+ }
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+
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+ case 0xc5: { /*emule*/
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+ switch (t[1]) {
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+ /* c5 91 xx yy | size == 12 (8+4) | xx != 0x00 -- xx yy queue rating */
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+ case 0x91: if ((packet_len == 12) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 3);
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+ /* c5 90 xx .. yy | size == 26 (8+2+16) | xx .. yy == hash -- file ping */
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+ case 0x90: if ((packet_len == 26) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 4);
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+ /* c5 92 | size == 10 (8+2) -- file not found */
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+ case 0x92: if (packet_len == 10) return ((IPP2P_EDK * 100) + 5);
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+ /* c5 93 | size == 10 (8+2) -- queue full */
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+ case 0x93: if (packet_len == 10) return ((IPP2P_EDK * 100) + 6);
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+ }
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+ }
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+
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+ case 0xe4: { /*kad*/
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+ switch (t[1]) {
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+ /* e4 50 | size == 12 */
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+ case 0x50: if (packet_len == 12) return ((IPP2P_EDK * 100) + 7);
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+ /* e4 58 | size == 14 */
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+ case 0x58: if ((packet_len == 14) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 8);
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+ /* e4 59 | size == 10 */
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+ case 0x59: if (packet_len == 10) return ((IPP2P_EDK * 100) + 9);
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+ /* e4 30 .. | t[18] == 0x01 | size > 26 | --> search */
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+ case 0x30: if ((packet_len > 26) && (t[18] == 0x01)) return ((IPP2P_EDK * 100) + 10);
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+ /* e4 28 .. 00 | t[68] == 0x00 | size > 76 */
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+ case 0x28: if ((packet_len > 76) && (t[68] == 0x00)) return ((IPP2P_EDK * 100) + 11);
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+ /* e4 20 .. | size == 43 */
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+ case 0x20: if ((packet_len == 43) && (t[2] != 0x00) && (t[34] != 0x00)) return ((IPP2P_EDK * 100) + 12);
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+ /* e4 00 .. 00 | size == 35 ? */
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+ case 0x00: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 13);
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+ /* e4 10 .. 00 | size == 35 ? */
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+ case 0x10: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 14);
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+ /* e4 18 .. 00 | size == 35 ? */
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+ case 0x18: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 15);
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+ /* e4 40 .. | t[18] == 0x01 | t[19] == 0x00 | size > 40 */
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+ case 0x40: if ((packet_len > 40) && (t[18] == 0x01) && (t[19] == 0x00)) return ((IPP2P_EDK * 100) + 16);
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+ }
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+ }
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+
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+ default: return 0;
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+ } /* end of switch (t[0]) */
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+}/*udp_search_edk*/
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+
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+
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+/*Search for UDP Gnutella commands*/
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+int
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+udp_search_gnu (unsigned char *haystack, int packet_len)
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+{
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+ unsigned char *t = haystack;
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+ t += 8;
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+
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+ if (memcmp(t, "GND", 3) == 0) return ((IPP2P_GNU * 100) + 1);
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+ if (memcmp(t, "GNUTELLA ", 9) == 0) return ((IPP2P_GNU * 100) + 2);
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+ return 0;
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+}/*udp_search_gnu*/
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+
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+
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+/*Search for UDP KaZaA commands*/
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+int
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+udp_search_kazaa (unsigned char *haystack, int packet_len)
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+{
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+ unsigned char *t = haystack;
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+
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+ if (t[packet_len-1] == 0x00){
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+ t += (packet_len - 6);
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+ if (memcmp(t, "KaZaA", 5) == 0) return (IPP2P_KAZAA * 100);
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+ }
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+ return 0;
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+}/*udp_search_kazaa*/
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+
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+
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+/*Search for UDP BitTorrent commands*/
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+int
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+udp_search_bit (unsigned char *haystack, int packet_len)
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+{
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+ unsigned char *t = haystack;
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+
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+ /* packet_len has to be 24 */
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+ if (packet_len != 24) return 0;
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+
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+ t += 8;
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+
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+ /* ^ 00 00 04 17 27 10 19 80 */
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+ if ((ntohl(get_u32(t, 0)) == 0x00000417) && (ntohl(get_u32(t, 4)) == 0x27101980)) return (IPP2P_BIT * 100);
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+
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+ return 0;
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+}/*udp_search_bit*/
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+
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+
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+
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+/*Search for Ares commands*/
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+int
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+search_ares (unsigned char *haystack, int packet_len, int head_len)
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+{
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+ unsigned char *t = haystack;
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+ t += head_len;
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+
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+ if ((packet_len - head_len) == 6){ /* possible connect command*/
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+ if ((t[0] == 0x03) && (t[1] == 0x00) && (t[2] == 0x5a) && (t[3] == 0x04) && (t[4] == 0x03) && (t[5] == 0x05))
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+ return ((IPP2P_ARES * 100) + 1); /* found connect packet: 03 00 5a 04 03 05 */
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+ }
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+ if ((packet_len - head_len) == 60){ /* possible download command*/
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+ if ((t[59] == 0x0a) && (t[58] == 0x0a)){
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+ if (memcmp(t, "PUSH SHA1:", 10) == 0) /* found download command */
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+ return ((IPP2P_ARES * 100) + 2);
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+ }
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+ }
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+ return 0;
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+} /*search_ares*/
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+
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+
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+/*Search for SoulSeek commands*/
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+int
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+search_soul (unsigned char *haystack, int packet_len, int head_len)
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+{
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+ unsigned char *t = haystack;
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+ t += head_len;
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+
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+ if (get_u16(t, 0) == (packet_len - head_len - 4)){
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+ /* xx xx 00 00 yy zz 00 00 .. | xx = sizeof(payload) - 4 */
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+ if ((get_u16(t,2) == 0x0000) &&(t[4] != 0x00) && (get_u16(t,6) == 0x0000))
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+ return ((IPP2P_SOUL * 100) + 1);
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+ } else {
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+ /* 00 00 00 00 00 00 00 00 + sizeof(payload) == 8*/
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+ if (((packet_len - head_len) == 8) && (get_u32(t, 0) == 0x00000000) && (get_u32(t, 4) == 0x00000000))
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+ return ((IPP2P_SOUL * 100) + 2);
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+ }
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+
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+ /* 01 xx 00 00 00 yy .. zz 00 00 00 .. | xx == sizeof(nick) | yy .. zz == nick */
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+ if ((t[0] == 0x01) && (t[2] == 0x00) && (get_u16(t,3) == 0x0000) && ((packet_len - head_len) > ((get_u8(t,1))+6)) &&
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+ (t[(get_u8(t,1))+4] != 0x00) && (t[(get_u8(t,1))+5] == 0x01) && (t[(get_u8(t,1))+6] == 0x00))
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+ return ((IPP2P_SOUL * 100) + 3);
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+ return 0;
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+}
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+
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+
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+/*Search for WinMX commands*/
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+int
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+search_winmx (unsigned char *haystack, int packet_len, int head_len)
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+{
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+ unsigned char *t = haystack;
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+ int c;
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+ t += head_len;
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+
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+ if (((packet_len - head_len) == 4) && (memcmp(t, "SEND", 4) == 0)) return ((IPP2P_WINMX * 100) + 1);
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+ if (((packet_len - head_len) == 3) && (memcmp(t, "GET", 3) == 0)) return ((IPP2P_WINMX * 100) + 2);
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+ if (packet_len < (head_len + 10)) return 0;
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+
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+ if ((memcmp(t, "SEND", 4) == 0) || (memcmp(t, "GET", 3) == 0)){
|
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+ c = head_len + 4;
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+ t += 4;
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+ while (c < packet_len - 5) {
|
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+ if ((t[0] == 0x20) && (t[1] == 0x22)){
|
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+ c += 2;
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+ t += 2;
|
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+ while (c < packet_len - 2) {
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+ if ((t[0] == 0x22) && (t[1] == 0x20)) return ((IPP2P_WINMX * 100) + 3);
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+ t++;
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+ c++;
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+ }
|
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+ }
|
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+ t++;
|
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+ c++;
|
||||
+ }
|
||||
+ }
|
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+ return 0;
|
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+} /*search_winmx*/
|
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+
|
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+
|
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+/*Search for appleJuice commands*/
|
||||
+int
|
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+search_apple (unsigned char *haystack, int packet_len, int head_len)
|
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+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ t += head_len;
|
||||
+
|
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+ if ((memcmp(t, "ajprot", 6) == 0) && (t[6] == 0x0d) && (t[7] == 0x0a)) return (IPP2P_APPLE * 100);
|
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+
|
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+ return 0;
|
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+}
|
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+
|
||||
+
|
||||
+/*Search for BitTorrent commands*/
|
||||
+int
|
||||
+search_bittorrent (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+
|
||||
+ unsigned char *t = haystack;
|
||||
+ if (*(haystack+head_len) != 0x13) return 0; /*Bail out of first byte != 0x13*/
|
||||
+
|
||||
+ t += head_len + 1;
|
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+
|
||||
+ if (memcmp(t, "BitTorrent protocol", 19) == 0) return (IPP2P_BIT * 100);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*check for Kazaa get command*/
|
||||
+int
|
||||
+search_kazaa (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+
|
||||
+ if (!((*(haystack + packet_len - 2) == 0x0d) && (*(haystack + packet_len - 1) == 0x0a))) return 0;
|
||||
+
|
||||
+ t += head_len;
|
||||
+ if (memcmp(t, "GET /.hash=", 11) == 0)
|
||||
+ return (IPP2P_DATA_KAZAA * 100);
|
||||
+ else
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for gnutella get command*/
|
||||
+int
|
||||
+search_gnu (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+
|
||||
+ if (!((*(haystack + packet_len - 2) == 0x0d) && (*(haystack + packet_len - 1) == 0x0a))) return 0;
|
||||
+
|
||||
+ t += head_len;
|
||||
+ if (memcmp(t, "GET /get/", 9) == 0) return ((IPP2P_DATA_GNU * 100) + 1);
|
||||
+ if (memcmp(t, "GET /uri-res/", 13) == 0) return ((IPP2P_DATA_GNU * 100) + 2);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for gnutella get commands and other typical data*/
|
||||
+int
|
||||
+search_all_gnu (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ int c;
|
||||
+
|
||||
+ if (!((*(haystack + packet_len - 2) == 0x0d) && (*(haystack + packet_len - 1) == 0x0a))) return 0;
|
||||
+
|
||||
+ t += head_len;
|
||||
+
|
||||
+ if (memcmp(t, "GNUTELLA CONNECT/", 17) == 0) return ((IPP2P_GNU * 100) + 1);
|
||||
+ if (memcmp(t, "GNUTELLA/", 9) == 0) return ((IPP2P_GNU * 100) + 2);
|
||||
+
|
||||
+ if ((memcmp(t, "GET /get/", 9) == 0) || (memcmp(t, "GET /uri-res/", 13) == 0))
|
||||
+ {
|
||||
+ c = head_len + 8;
|
||||
+ t += 8;
|
||||
+ while (c < packet_len - 22) {
|
||||
+ if ((t[0] == 0x0d) && (t[1] == 0x0a)) {
|
||||
+ t += 2;
|
||||
+ c += 2;
|
||||
+ if ((memcmp(t, "X-Gnutella-", 11) == 0) || (memcmp(t, "X-Queue:", 8) == 0)) return ((IPP2P_GNU * 100) + 3);
|
||||
+ } else {
|
||||
+ t++;
|
||||
+ c++;
|
||||
+ }
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for KaZaA download commands and other typical data*/
|
||||
+int
|
||||
+search_all_kazaa (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ int c;
|
||||
+
|
||||
+ if (!((*(haystack + packet_len - 2) == 0x0d) && (*(haystack + packet_len - 1) == 0x0a))) return 0;
|
||||
+
|
||||
+ t += head_len;
|
||||
+ if (memcmp(t, "GIVE ", 5) == 0) return ((IPP2P_KAZAA * 100) + 1);
|
||||
+
|
||||
+ if (memcmp(t, "GET /", 5) == 0) {
|
||||
+ c = head_len + 8;
|
||||
+ t += 8;
|
||||
+ while (c < packet_len - 22) {
|
||||
+ if ((t[0] == 0x0d) && (t[1] == 0x0a)) {
|
||||
+ t += 2;
|
||||
+ c += 2;
|
||||
+ if ( memcmp(t, "X-Kazaa-Username: ", 18) == 0 ) return ((IPP2P_KAZAA * 100) + 2);
|
||||
+ if ( memcmp(t, "User-Agent: PeerEnabler/", 24) == 0 ) return ((IPP2P_KAZAA * 100) + 3);
|
||||
+ } else {
|
||||
+ t++;
|
||||
+ c++;
|
||||
+ }
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+/*fast check for edonkey file segment transfer command*/
|
||||
+int
|
||||
+search_edk (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ if (*(haystack+head_len) != 0xe3)
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ if (*(haystack+head_len+5) == 0x47)
|
||||
+ return (IPP2P_DATA_EDK * 100);
|
||||
+ else
|
||||
+ return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*intensive but slower search for some edonkey packets including size-check*/
|
||||
+int
|
||||
+search_all_edk (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ int cmd;
|
||||
+
|
||||
+ if (*(haystack+head_len) == 0xd4) {
|
||||
+ t += head_len;
|
||||
+ cmd = get_u16(t, 1);
|
||||
+ if (cmd == (packet_len - head_len - 5)) {
|
||||
+ switch (t[5]) {
|
||||
+ case 0x82: return ((IPP2P_EDK * 100) + 42);
|
||||
+ case 0x15: return ((IPP2P_EDK * 100) + 43);
|
||||
+ default: return 0;
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+
|
||||
+ if (*(haystack+head_len) == 0xc5) { /*search for additional eMule packets*/
|
||||
+ t += head_len;
|
||||
+ cmd = get_u16(t, 1);
|
||||
+
|
||||
+ if (cmd == (packet_len - head_len - 5)) {
|
||||
+ switch (t[5]) {
|
||||
+ case 0x01: return ((IPP2P_EDK * 100) + 30);
|
||||
+ case 0x02: return ((IPP2P_EDK * 100) + 31);
|
||||
+ case 0x60: return ((IPP2P_EDK * 100) + 32);
|
||||
+ case 0x81: return ((IPP2P_EDK * 100) + 33);
|
||||
+ case 0x82: return ((IPP2P_EDK * 100) + 34);
|
||||
+ case 0x85: return ((IPP2P_EDK * 100) + 35);
|
||||
+ case 0x86: return ((IPP2P_EDK * 100) + 36);
|
||||
+ case 0x87: return ((IPP2P_EDK * 100) + 37);
|
||||
+ case 0x40: return ((IPP2P_EDK * 100) + 38);
|
||||
+ case 0x92: return ((IPP2P_EDK * 100) + 39);
|
||||
+ case 0x93: return ((IPP2P_EDK * 100) + 40);
|
||||
+ case 0x12: return ((IPP2P_EDK * 100) + 41);
|
||||
+ default: return 0;
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+
|
||||
+ if (*(haystack+head_len) != 0xe3)
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ t += head_len;
|
||||
+ cmd = get_u16(t, 1);
|
||||
+ if (cmd == (packet_len - head_len - 5)) {
|
||||
+ switch (t[5]) {
|
||||
+ case 0x01: return ((IPP2P_EDK * 100) + 1); /*Client: hello or Server:hello*/
|
||||
+ case 0x50: return ((IPP2P_EDK * 100) + 2); /*Client: file status*/
|
||||
+ case 0x16: return ((IPP2P_EDK * 100) + 3); /*Client: search*/
|
||||
+ case 0x58: return ((IPP2P_EDK * 100) + 4); /*Client: file request*/
|
||||
+ case 0x48: return ((IPP2P_EDK * 100) + 5); /*???*/
|
||||
+ case 0x54: return ((IPP2P_EDK * 100) + 6); /*???*/
|
||||
+ case 0x47: return ((IPP2P_EDK * 100) + 7); /*Client: file segment request*/
|
||||
+ case 0x46: return ((IPP2P_EDK * 100) + 8); /*Client: download segment*/
|
||||
+ case 0x4c: return ((IPP2P_EDK * 100) + 9); /*Client: Hello-Answer*/
|
||||
+ case 0x4f: return ((IPP2P_EDK * 100) + 10); /*Client: file status request*/
|
||||
+ case 0x59: return ((IPP2P_EDK * 100) + 11); /*Client: file request answer*/
|
||||
+ case 0x65: return ((IPP2P_EDK * 100) + 12); /*Client: ???*/
|
||||
+ case 0x66: return ((IPP2P_EDK * 100) + 13); /*Client: ???*/
|
||||
+ case 0x51: return ((IPP2P_EDK * 100) + 14); /*Client: ???*/
|
||||
+ case 0x52: return ((IPP2P_EDK * 100) + 15); /*Client: ???*/
|
||||
+ case 0x4d: return ((IPP2P_EDK * 100) + 16); /*Client: ???*/
|
||||
+ case 0x5c: return ((IPP2P_EDK * 100) + 17); /*Client: ???*/
|
||||
+ case 0x38: return ((IPP2P_EDK * 100) + 18); /*Client: ???*/
|
||||
+ case 0x69: return ((IPP2P_EDK * 100) + 19); /*Client: ???*/
|
||||
+ case 0x19: return ((IPP2P_EDK * 100) + 20); /*Client: ???*/
|
||||
+ case 0x42: return ((IPP2P_EDK * 100) + 21); /*Client: ???*/
|
||||
+ case 0x34: return ((IPP2P_EDK * 100) + 22); /*Client: ???*/
|
||||
+ case 0x94: return ((IPP2P_EDK * 100) + 23); /*Client: ???*/
|
||||
+ case 0x1c: return ((IPP2P_EDK * 100) + 24); /*Client: ???*/
|
||||
+ case 0x6a: return ((IPP2P_EDK * 100) + 25); /*Client: ???*/
|
||||
+ default: return 0;
|
||||
+ }
|
||||
+ } else {
|
||||
+ if (cmd > packet_len - head_len - 5) {
|
||||
+ if ((t[3] == 0x00) && (t[4] == 0x00)) {
|
||||
+ if (t[5] == 0x01) return ((IPP2P_EDK * 100) + 26);
|
||||
+ if (t[5] == 0x4c) return ((IPP2P_EDK * 100) + 27);
|
||||
+ }
|
||||
+ return 0;
|
||||
+
|
||||
+ } /*non edk packet*/
|
||||
+ if (t[cmd+5] == 0xe3) return ((IPP2P_EDK * 100) + 28);/*found another edk-command*/
|
||||
+ if (t[cmd+5] == 0xc5) return ((IPP2P_EDK * 100) + 29);/*found an emule-command*/
|
||||
+ return 0;
|
||||
+ }
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*fast check for Direct Connect send command*/
|
||||
+int
|
||||
+search_dc (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+
|
||||
+ if (*(haystack+head_len) != 0x24 )
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ t += head_len + 1;
|
||||
+ if (memcmp(t, "Send|", 5) == 0)
|
||||
+ return (IPP2P_DATA_DC * 100);
|
||||
+ else
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*intensive but slower check for all direct connect packets*/
|
||||
+int
|
||||
+search_all_dc (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+
|
||||
+ if ((*(haystack + head_len) == 0x24) && (*(haystack + packet_len - 1) == 0x7c)) {
|
||||
+ t += head_len + 1;
|
||||
+ if (memcmp(t, "Lock ", 5) == 0) return ((IPP2P_DC * 100) + 1); /*hub: hello*/
|
||||
+ if (memcmp(t, "Key ", 4) == 0) return ((IPP2P_DC * 100) + 2); /*client: hello*/
|
||||
+ if (memcmp(t, "Hello ", 6) == 0) return ((IPP2P_DC * 100) + 3); /*hub:connected*/
|
||||
+ if (memcmp(t, "MyNick ", 7) == 0) return ((IPP2P_DC * 100) + 4); /*client-client: hello*/
|
||||
+ if (memcmp(t, "Search ", 7) == 0) return ((IPP2P_DC * 100) + 5); /*client: search*/
|
||||
+ if (memcmp(t, "Send", 4) == 0) return ((IPP2P_DC * 100) + 6); /*client: start download*/
|
||||
+ return 0;
|
||||
+ } else
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+static struct {
|
||||
+ int command;
|
||||
+ __u8 short_hand; /*for fucntions included in short hands*/
|
||||
+ int packet_len;
|
||||
+ int (*function_name) (unsigned char *, int, int);
|
||||
+} matchlist[] = {
|
||||
+ {IPP2P_EDK,SHORT_HAND_IPP2P,40, &search_all_edk},
|
||||
+ {IPP2P_DATA_KAZAA,SHORT_HAND_DATA,200, &search_kazaa},
|
||||
+ {IPP2P_DATA_EDK,SHORT_HAND_DATA,60, &search_edk},
|
||||
+ {IPP2P_DATA_DC,SHORT_HAND_DATA,26, &search_dc},
|
||||
+ {IPP2P_DC,SHORT_HAND_IPP2P,25, search_all_dc},
|
||||
+ {IPP2P_DATA_GNU,SHORT_HAND_DATA,40, &search_gnu},
|
||||
+ {IPP2P_GNU,SHORT_HAND_IPP2P,35, &search_all_gnu},
|
||||
+ {IPP2P_KAZAA,SHORT_HAND_IPP2P,35, &search_all_kazaa},
|
||||
+ {IPP2P_BIT,SHORT_HAND_NONE,40, &search_bittorrent},
|
||||
+ {IPP2P_APPLE,SHORT_HAND_NONE,20, &search_apple},
|
||||
+ {IPP2P_SOUL,SHORT_HAND_NONE,25, &search_soul},
|
||||
+ {IPP2P_WINMX,SHORT_HAND_NONE,20, &search_winmx},
|
||||
+ {IPP2P_ARES,SHORT_HAND_NONE,25, &search_ares},
|
||||
+ {0,0,0,NULL}
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static struct {
|
||||
+ int command;
|
||||
+ __u8 short_hand; /*for fucntions included in short hands*/
|
||||
+ int packet_len;
|
||||
+ int (*function_name) (unsigned char *, int);
|
||||
+} udp_list[] = {
|
||||
+ {IPP2P_KAZAA,SHORT_HAND_IPP2P,14, &udp_search_kazaa},
|
||||
+ {IPP2P_BIT,SHORT_HAND_NONE,23, &udp_search_bit},
|
||||
+ {IPP2P_GNU,SHORT_HAND_IPP2P,11, &udp_search_gnu},
|
||||
+ {IPP2P_EDK,SHORT_HAND_IPP2P,9, &udp_search_edk},
|
||||
+ {0,0,0,NULL}
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static int
|
||||
+match(const struct sk_buff *skb,
|
||||
+ const struct net_device *in,
|
||||
+ const struct net_device *out,
|
||||
+ const void *matchinfo,
|
||||
+ int offset,
|
||||
+
|
||||
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
|
||||
+ const void *hdr,
|
||||
+ u_int16_t datalen,
|
||||
+#endif
|
||||
+
|
||||
+ int *hotdrop)
|
||||
+{
|
||||
+ const struct ipt_p2p_info *info = matchinfo;
|
||||
+ unsigned char *haystack;
|
||||
+ struct iphdr *ip = skb->nh.iph;
|
||||
+ int p2p_result = 0, i = 0;
|
||||
+ int head_len;
|
||||
+ int hlen = ntohs(ip->tot_len)-(ip->ihl*4); /*hlen = packet-data length*/
|
||||
+
|
||||
+ /*must not be a fragment*/
|
||||
+ if (offset) {
|
||||
+ if (info->debug) printk("IPP2P.match: offset found %i \n",offset);
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+ /*make sure that skb is linear*/
|
||||
+ if(skb_is_nonlinear(skb)){
|
||||
+ if (info->debug) printk("IPP2P.match: nonlinear skb found\n");
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+
|
||||
+ haystack=(char *)ip+(ip->ihl*4); /*haystack = packet data*/
|
||||
+
|
||||
+ switch (ip->protocol){
|
||||
+ case IPPROTO_TCP: /*what to do with a TCP packet*/
|
||||
+ {
|
||||
+ struct tcphdr *tcph = (void *) ip + ip->ihl * 4;
|
||||
+
|
||||
+ if (tcph->fin) return 0; /*if FIN bit is set bail out*/
|
||||
+ if (tcph->syn) return 0; /*if SYN bit is set bail out*/
|
||||
+ if (tcph->rst) return 0; /*if RST bit is set bail out*/
|
||||
+ head_len = tcph->doff * 4; /*get TCP-Header-Size*/
|
||||
+ while (matchlist[i].command) {
|
||||
+ if ((((info->cmd & matchlist[i].command) == matchlist[i].command) ||
|
||||
+ ((info->cmd & matchlist[i].short_hand) == matchlist[i].short_hand)) &&
|
||||
+ (hlen > matchlist[i].packet_len)) {
|
||||
+ p2p_result = matchlist[i].function_name(haystack, hlen, head_len);
|
||||
+ if (p2p_result)
|
||||
+ {
|
||||
+ if (info->debug) printk("IPP2P.debug:TCP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
|
||||
+ p2p_result, NIPQUAD(ip->saddr),ntohs(tcph->source), NIPQUAD(ip->daddr),ntohs(tcph->dest),hlen);
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+ }
|
||||
+ i++;
|
||||
+ }
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+
|
||||
+ case IPPROTO_UDP: /*what to do with an UDP packet*/
|
||||
+ {
|
||||
+ struct udphdr *udph = (void *) ip + ip->ihl * 4;
|
||||
+
|
||||
+ while (udp_list[i].command){
|
||||
+ if ((((info->cmd & udp_list[i].command) == udp_list[i].command) ||
|
||||
+ ((info->cmd & udp_list[i].short_hand) == udp_list[i].short_hand)) &&
|
||||
+ (hlen > udp_list[i].packet_len)) {
|
||||
+ p2p_result = udp_list[i].function_name(haystack, hlen);
|
||||
+ if (p2p_result){
|
||||
+ if (info->debug) printk("IPP2P.debug:UDP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
|
||||
+ p2p_result, NIPQUAD(ip->saddr),ntohs(udph->source), NIPQUAD(ip->daddr),ntohs(udph->dest),hlen);
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+ }
|
||||
+ i++;
|
||||
+ }
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+
|
||||
+ default: return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+static int
|
||||
+checkentry(const char *tablename,
|
||||
+ const struct ipt_ip *ip,
|
||||
+ void *matchinfo,
|
||||
+ unsigned int matchsize,
|
||||
+ unsigned int hook_mask)
|
||||
+{
|
||||
+ /* Must specify -p tcp */
|
||||
+/* if (ip->proto != IPPROTO_TCP || (ip->invflags & IPT_INV_PROTO)) {
|
||||
+ * printk("ipp2p: Only works on TCP packets, use -p tcp\n");
|
||||
+ * return 0;
|
||||
+ * }*/
|
||||
+ return 1;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+
|
||||
+static struct ipt_match ipp2p_match = {
|
||||
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
|
||||
+ { NULL, NULL },
|
||||
+ "ipp2p",
|
||||
+ &match,
|
||||
+ &checkentry,
|
||||
+ NULL,
|
||||
+ THIS_MODULE
|
||||
+#endif
|
||||
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
|
||||
+ .name = "ipp2p",
|
||||
+ .match = &match,
|
||||
+ .checkentry = &checkentry,
|
||||
+ .me = THIS_MODULE,
|
||||
+#endif
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static int __init init(void)
|
||||
+{
|
||||
+ printk(KERN_INFO "IPP2P v%s loading\n", IPP2P_VERSION);
|
||||
+ return ipt_register_match(&ipp2p_match);
|
||||
+}
|
||||
+
|
||||
+static void __exit fini(void)
|
||||
+{
|
||||
+ ipt_unregister_match(&ipp2p_match);
|
||||
+ printk(KERN_INFO "IPP2P v%s unloaded\n", IPP2P_VERSION);
|
||||
+}
|
||||
+
|
||||
+module_init(init);
|
||||
+module_exit(fini);
|
||||
+
|
||||
+
|
||||
diff -urN linux-2.4.29.old/net/ipv4/netfilter/Makefile linux-2.4.29/net/ipv4/netfilter/Makefile
|
||||
--- linux-2.4.29.old/net/ipv4/netfilter/Makefile 2005-03-12 00:40:38.000000000 +0100
|
||||
+++ linux-2.4.29/net/ipv4/netfilter/Makefile 2005-03-12 00:42:57.000000000 +0100
|
||||
@@ -67,6 +67,7 @@
|
||||
obj-$(CONFIG_IP_NF_MATCH_LIMIT) += ipt_limit.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MARK) += ipt_mark.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MAC) += ipt_mac.o
|
||||
+obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o
|
||||
|
||||
obj-$(CONFIG_IP_NF_MATCH_PKTTYPE) += ipt_pkttype.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MULTIPORT) += ipt_multiport.o
|
||||
@@ -0,0 +1,929 @@
|
||||
diff -urN linux.old/include/linux/netfilter_ipv4/ipt_ipp2p.h linux.dev/include/linux/netfilter_ipv4/ipt_ipp2p.h
|
||||
--- linux.old/include/linux/netfilter_ipv4/ipt_ipp2p.h 1970-01-01 01:00:00.000000000 +0100
|
||||
+++ linux.dev/include/linux/netfilter_ipv4/ipt_ipp2p.h 2006-03-23 14:37:56.000000000 +0100
|
||||
@@ -0,0 +1,31 @@
|
||||
+#ifndef __IPT_IPP2P_H
|
||||
+#define __IPT_IPP2P_H
|
||||
+#define IPP2P_VERSION "0.8.1_rc1"
|
||||
+
|
||||
+struct ipt_p2p_info {
|
||||
+ int cmd;
|
||||
+ int debug;
|
||||
+};
|
||||
+
|
||||
+#endif //__IPT_IPP2P_H
|
||||
+
|
||||
+#define SHORT_HAND_IPP2P 1 /* --ipp2p switch*/
|
||||
+//#define SHORT_HAND_DATA 4 /* --ipp2p-data switch*/
|
||||
+#define SHORT_HAND_NONE 5 /* no short hand*/
|
||||
+
|
||||
+#define IPP2P_EDK (1 << 1)
|
||||
+#define IPP2P_DATA_KAZAA (1 << 2)
|
||||
+#define IPP2P_DATA_EDK (1 << 3)
|
||||
+#define IPP2P_DATA_DC (1 << 4)
|
||||
+#define IPP2P_DC (1 << 5)
|
||||
+#define IPP2P_DATA_GNU (1 << 6)
|
||||
+#define IPP2P_GNU (1 << 7)
|
||||
+#define IPP2P_KAZAA (1 << 8)
|
||||
+#define IPP2P_BIT (1 << 9)
|
||||
+#define IPP2P_APPLE (1 << 10)
|
||||
+#define IPP2P_SOUL (1 << 11)
|
||||
+#define IPP2P_WINMX (1 << 12)
|
||||
+#define IPP2P_ARES (1 << 13)
|
||||
+#define IPP2P_MUTE (1 << 14)
|
||||
+#define IPP2P_WASTE (1 << 15)
|
||||
+#define IPP2P_XDCC (1 << 16)
|
||||
diff -urN linux.old/net/ipv4/netfilter/Config.in linux.dev/net/ipv4/netfilter/Config.in
|
||||
--- linux.old/net/ipv4/netfilter/Config.in 2006-03-23 14:35:20.000000000 +0100
|
||||
+++ linux.dev/net/ipv4/netfilter/Config.in 2006-03-23 14:35:58.000000000 +0100
|
||||
@@ -29,6 +29,7 @@
|
||||
dep_tristate ' TOS match support' CONFIG_IP_NF_MATCH_TOS $CONFIG_IP_NF_IPTABLES
|
||||
dep_tristate ' recent match support' CONFIG_IP_NF_MATCH_RECENT $CONFIG_IP_NF_IPTABLES
|
||||
dep_tristate ' ECN match support' CONFIG_IP_NF_MATCH_ECN $CONFIG_IP_NF_IPTABLES
|
||||
+ dep_tristate ' peer to peer traffic match support' CONFIG_IP_NF_MATCH_IPP2P $CONFIG_IP_NF_IPTABLES
|
||||
|
||||
dep_tristate ' DSCP match support' CONFIG_IP_NF_MATCH_DSCP $CONFIG_IP_NF_IPTABLES
|
||||
|
||||
diff -urN linux.old/net/ipv4/netfilter/Makefile linux.dev/net/ipv4/netfilter/Makefile
|
||||
--- linux.old/net/ipv4/netfilter/Makefile 2006-03-23 14:35:20.000000000 +0100
|
||||
+++ linux.dev/net/ipv4/netfilter/Makefile 2006-03-23 14:35:58.000000000 +0100
|
||||
@@ -76,6 +76,7 @@
|
||||
obj-$(CONFIG_IP_NF_MATCH_LIMIT) += ipt_limit.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MARK) += ipt_mark.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MAC) += ipt_mac.o
|
||||
+obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o
|
||||
|
||||
obj-$(CONFIG_IP_NF_MATCH_PKTTYPE) += ipt_pkttype.o
|
||||
obj-$(CONFIG_IP_NF_MATCH_MULTIPORT) += ipt_multiport.o
|
||||
diff -urN linux.old/net/ipv4/netfilter/ipt_ipp2p.c linux.dev/net/ipv4/netfilter/ipt_ipp2p.c
|
||||
--- linux.old/net/ipv4/netfilter/ipt_ipp2p.c 1970-01-01 01:00:00.000000000 +0100
|
||||
+++ linux.dev/net/ipv4/netfilter/ipt_ipp2p.c 2006-03-23 14:37:18.000000000 +0100
|
||||
@@ -0,0 +1,868 @@
|
||||
+#if defined(MODVERSIONS)
|
||||
+#include <linux/modversions.h>
|
||||
+#endif
|
||||
+#include <linux/module.h>
|
||||
+#include <linux/netfilter_ipv4/ip_tables.h>
|
||||
+#include <linux/version.h>
|
||||
+#include <linux/netfilter_ipv4/ipt_ipp2p.h>
|
||||
+#include <net/tcp.h>
|
||||
+#include <net/udp.h>
|
||||
+
|
||||
+#define get_u8(X,O) (*(__u8 *)(X + O))
|
||||
+#define get_u16(X,O) (*(__u16 *)(X + O))
|
||||
+#define get_u32(X,O) (*(__u32 *)(X + O))
|
||||
+
|
||||
+MODULE_AUTHOR("Eicke Friedrich/Klaus Degner <ipp2p@ipp2p.org>");
|
||||
+MODULE_DESCRIPTION("An extension to iptables to identify P2P traffic.");
|
||||
+MODULE_LICENSE("GPL");
|
||||
+
|
||||
+
|
||||
+/*Search for UDP eDonkey/eMule/Kad commands*/
|
||||
+int
|
||||
+udp_search_edk (unsigned char *haystack, int packet_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ t += 8;
|
||||
+
|
||||
+ switch (t[0]) {
|
||||
+ case 0xe3:
|
||||
+ { /*edonkey*/
|
||||
+ switch (t[1])
|
||||
+ {
|
||||
+ /* client -> server status request */
|
||||
+ case 0x96:
|
||||
+ if (packet_len == 14) return ((IPP2P_EDK * 100) + 50);
|
||||
+ break;
|
||||
+ /* server -> client status request */
|
||||
+ case 0x97: if (packet_len == 42) return ((IPP2P_EDK * 100) + 51);
|
||||
+ break;
|
||||
+ /* server description request */
|
||||
+ /* e3 2a ff f0 .. | size == 6 */
|
||||
+ case 0xa2: if ( (packet_len == 14) && ( get_u16(t,2) == __constant_htons(0xfff0) ) ) return ((IPP2P_EDK * 100) + 52);
|
||||
+ break;
|
||||
+ /* server description response */
|
||||
+ /* e3 a3 ff f0 .. | size > 40 && size < 200 */
|
||||
+ //case 0xa3: return ((IPP2P_EDK * 100) + 53);
|
||||
+ // break;
|
||||
+ case 0x9a: if (packet_len==26) return ((IPP2P_EDK * 100) + 54);
|
||||
+ break;
|
||||
+
|
||||
+ case 0x92: if (packet_len==18) return ((IPP2P_EDK * 100) + 55);
|
||||
+ break;
|
||||
+ }
|
||||
+ break;
|
||||
+ }
|
||||
+ case 0xe4:
|
||||
+ {
|
||||
+ switch (t[1])
|
||||
+ {
|
||||
+ /* e4 20 .. | size == 43 */
|
||||
+ case 0x20: if ((packet_len == 43) && (t[2] != 0x00) && (t[34] != 0x00)) return ((IPP2P_EDK * 100) + 60);
|
||||
+ break;
|
||||
+ /* e4 00 .. 00 | size == 35 ? */
|
||||
+ case 0x00: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 61);
|
||||
+ break;
|
||||
+ /* e4 10 .. 00 | size == 35 ? */
|
||||
+ case 0x10: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 62);
|
||||
+ break;
|
||||
+ /* e4 18 .. 00 | size == 35 ? */
|
||||
+ case 0x18: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 63);
|
||||
+ break;
|
||||
+ /* e4 52 .. | size = 44 */
|
||||
+ case 0x52: if (packet_len == 44 ) return ((IPP2P_EDK * 100) + 64);
|
||||
+ break;
|
||||
+ /* e4 58 .. | size == 6 */
|
||||
+ case 0x58: if (packet_len == 14 ) return ((IPP2P_EDK * 100) + 65);
|
||||
+ break;
|
||||
+ /* e4 59 .. | size == 2 */
|
||||
+ case 0x59: if (packet_len == 10 )return ((IPP2P_EDK * 100) + 66);
|
||||
+ break;
|
||||
+ /* e4 28 .. | packet_len == 52,77,102,127... */
|
||||
+ case 0x28: if (((packet_len-52) % 25) == 0) return ((IPP2P_EDK * 100) + 67);
|
||||
+ break;
|
||||
+ /* e4 50 xx xx | size == 4 */
|
||||
+ case 0x50: if (packet_len == 12) return ((IPP2P_EDK * 100) + 68);
|
||||
+ break;
|
||||
+ /* e4 40 xx xx | size == 48 */
|
||||
+ case 0x40: if (packet_len == 56) return ((IPP2P_EDK * 100) + 69);
|
||||
+ break;
|
||||
+ }
|
||||
+ break;
|
||||
+ }
|
||||
+ } /* end of switch (t[0]) */
|
||||
+ return 0;
|
||||
+}/*udp_search_edk*/
|
||||
+
|
||||
+
|
||||
+/*Search for UDP Gnutella commands*/
|
||||
+int
|
||||
+udp_search_gnu (unsigned char *haystack, int packet_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ t += 8;
|
||||
+
|
||||
+ if (memcmp(t, "GND", 3) == 0) return ((IPP2P_GNU * 100) + 51);
|
||||
+ if (memcmp(t, "GNUTELLA ", 9) == 0) return ((IPP2P_GNU * 100) + 52);
|
||||
+ return 0;
|
||||
+}/*udp_search_gnu*/
|
||||
+
|
||||
+
|
||||
+/*Search for UDP KaZaA commands*/
|
||||
+int
|
||||
+udp_search_kazaa (unsigned char *haystack, int packet_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+
|
||||
+ if (t[packet_len-1] == 0x00){
|
||||
+ t += (packet_len - 6);
|
||||
+ if (memcmp(t, "KaZaA", 5) == 0) return (IPP2P_KAZAA * 100 +50);
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+}/*udp_search_kazaa*/
|
||||
+
|
||||
+/*Search for UDP DirectConnect commands*/
|
||||
+int
|
||||
+udp_search_directconnect (unsigned char *haystack, int packet_len)
|
||||
+{
|
||||
+ unsigned char *t = haystack;
|
||||
+ if ((*(t + 8) == 0x24) && (*(t + packet_len - 1) == 0x7c)) {
|
||||
+ t+=8;
|
||||
+ if (memcmp(t, "SR ", 3) == 0) return ((IPP2P_DC * 100) + 60);
|
||||
+ if (memcmp(t, "Ping ", 5) == 0) return ((IPP2P_DC * 100) + 61);
|
||||
+ }
|
||||
+ return 0;
|
||||
+}/*udp_search_directconnect*/
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*Search for UDP BitTorrent commands*/
|
||||
+int
|
||||
+udp_search_bit (unsigned char *haystack, int packet_len)
|
||||
+{
|
||||
+ switch(packet_len)
|
||||
+ {
|
||||
+ case 24:
|
||||
+ /* ^ 00 00 04 17 27 10 19 80 */
|
||||
+ if ((ntohl(get_u32(haystack, 8)) == 0x00000417) && (ntohl(get_u32(haystack, 12)) == 0x27101980))
|
||||
+ return (IPP2P_BIT * 100 + 50);
|
||||
+ break;
|
||||
+ case 44:
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000400) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
|
||||
+ return (IPP2P_BIT * 100 + 51);
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000400))
|
||||
+ return (IPP2P_BIT * 100 + 61);
|
||||
+ break;
|
||||
+ case 65:
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000404) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
|
||||
+ return (IPP2P_BIT * 100 + 52);
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000404))
|
||||
+ return (IPP2P_BIT * 100 + 62);
|
||||
+ break;
|
||||
+ case 67:
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000406) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
|
||||
+ return (IPP2P_BIT * 100 + 53);
|
||||
+ if (get_u32(haystack, 16) == __constant_htonl(0x00000406))
|
||||
+ return (IPP2P_BIT * 100 + 63);
|
||||
+ break;
|
||||
+ case 211:
|
||||
+ if (get_u32(haystack, 8) == __constant_htonl(0x00000405))
|
||||
+ return (IPP2P_BIT * 100 + 54);
|
||||
+ break;
|
||||
+ case 29:
|
||||
+ if ((get_u32(haystack, 8) == __constant_htonl(0x00000401)))
|
||||
+ return (IPP2P_BIT * 100 + 55);
|
||||
+ break;
|
||||
+ case 52:
|
||||
+ if (get_u32(haystack,8) == __constant_htonl(0x00000827) &&
|
||||
+ get_u32(haystack,12) == __constant_htonl(0x37502950))
|
||||
+ return (IPP2P_BIT * 100 + 80);
|
||||
+ break;
|
||||
+ default:
|
||||
+ /* this packet does not have a constant size */
|
||||
+ if (packet_len >= 40 && get_u32(haystack, 16) == __constant_htonl(0x00000402) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
|
||||
+ return (IPP2P_BIT * 100 + 56);
|
||||
+ break;
|
||||
+ }
|
||||
+
|
||||
+ /* some extra-bitcomet rules:
|
||||
+ * "d1:" [a|r] "d2:id20:"
|
||||
+ */
|
||||
+ if (packet_len > 30 && get_u8(haystack, 8) == 'd' && get_u8(haystack, 9) == '1' && get_u8(haystack, 10) == ':' )
|
||||
+ {
|
||||
+ if (get_u8(haystack, 11) == 'a' || get_u8(haystack, 11) == 'r')
|
||||
+ {
|
||||
+ if (memcmp(haystack+12,"d2:id20:",8)==0)
|
||||
+ return (IPP2P_BIT * 100 + 57);
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+#if 0
|
||||
+ /* bitlord rules */
|
||||
+ /* packetlen must be bigger than 40 */
|
||||
+ /* first 4 bytes are zero */
|
||||
+ if (packet_len > 40 && get_u32(haystack, 8) == 0x00000000)
|
||||
+ {
|
||||
+ /* first rule: 00 00 00 00 01 00 00 xx xx xx xx 00 00 00 00*/
|
||||
+ if (get_u32(haystack, 12) == 0x00000000 &&
|
||||
+ get_u32(haystack, 16) == 0x00010000 &&
|
||||
+ get_u32(haystack, 24) == 0x00000000 )
|
||||
+ return (IPP2P_BIT * 100 + 71);
|
||||
+
|
||||
+ /* 00 01 00 00 0d 00 00 xx xx xx xx 00 00 00 00*/
|
||||
+ if (get_u32(haystack, 12) == 0x00000001 &&
|
||||
+ get_u32(haystack, 16) == 0x000d0000 &&
|
||||
+ get_u32(haystack, 24) == 0x00000000 )
|
||||
+ return (IPP2P_BIT * 100 + 71);
|
||||
+
|
||||
+
|
||||
+ }
|
||||
+#endif
|
||||
+
|
||||
+ return 0;
|
||||
+}/*udp_search_bit*/
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*Search for Ares commands*/
|
||||
+//#define IPP2P_DEBUG_ARES
|
||||
+int
|
||||
+search_ares (const unsigned char *payload, const u16 plen)
|
||||
+//int search_ares (unsigned char *haystack, int packet_len, int head_len)
|
||||
+{
|
||||
+// const unsigned char *t = haystack + head_len;
|
||||
+
|
||||
+ /* all ares packets start with */
|
||||
+ if (payload[1] == 0 && (plen - payload[0]) == 3)
|
||||
+ {
|
||||
+ switch (payload[2])
|
||||
+ {
|
||||
+ case 0x5a:
|
||||
+ /* ares connect */
|
||||
+ if ( plen == 6 && payload[5] == 0x05 ) return ((IPP2P_ARES * 100) + 1);
|
||||
+ break;
|
||||
+ case 0x09:
|
||||
+ /* ares search, min 3 chars --> 14 bytes
|
||||
+ * lets define a search can be up to 30 chars --> max 34 bytes
|
||||
+ */
|
||||
+ if ( plen >= 14 && plen <= 34 ) return ((IPP2P_ARES * 100) + 1);
|
||||
+ break;
|
||||
+#ifdef IPP2P_DEBUG_ARES
|
||||
+ default:
|
||||
+ printk(KERN_DEBUG "Unknown Ares command %x recognized, len: %u \n", (unsigned int) payload[2],plen);
|
||||
+#endif /* IPP2P_DEBUG_ARES */
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+#if 0
|
||||
+ /* found connect packet: 03 00 5a 04 03 05 */
|
||||
+ /* new version ares 1.8: 03 00 5a xx xx 05 */
|
||||
+ if ((plen) == 6){ /* possible connect command*/
|
||||
+ if ((payload[0] == 0x03) && (payload[1] == 0x00) && (payload[2] == 0x5a) && (payload[5] == 0x05))
|
||||
+ return ((IPP2P_ARES * 100) + 1);
|
||||
+ }
|
||||
+ if ((plen) == 60){ /* possible download command*/
|
||||
+ if ((payload[59] == 0x0a) && (payload[58] == 0x0a)){
|
||||
+ if (memcmp(t, "PUSH SHA1:", 10) == 0) /* found download command */
|
||||
+ return ((IPP2P_ARES * 100) + 2);
|
||||
+ }
|
||||
+ }
|
||||
+#endif
|
||||
+
|
||||
+ return 0;
|
||||
+} /*search_ares*/
|
||||
+
|
||||
+/*Search for SoulSeek commands*/
|
||||
+int
|
||||
+search_soul (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+//#define IPP2P_DEBUG_SOUL
|
||||
+ /* match: xx xx xx xx | xx = sizeof(payload) - 4 */
|
||||
+ if (get_u32(payload, 0) == (plen - 4)){
|
||||
+ const __u32 m=get_u32(payload, 4);
|
||||
+ /* match 00 yy yy 00, yy can be everything */
|
||||
+ if ( get_u8(payload, 4) == 0x00 && get_u8(payload, 7) == 0x00 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "0: Soulseek command 0x%x recognized\n",get_u32(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 1);
|
||||
+ }
|
||||
+
|
||||
+ /* next match: 01 yy 00 00 | yy can be everything */
|
||||
+ if ( get_u8(payload, 4) == 0x01 && get_u16(payload, 6) == 0x0000 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "1: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 2);
|
||||
+ }
|
||||
+
|
||||
+ /* other soulseek commandos are: 1-5,7,9,13-18,22,23,26,28,35-37,40-46,50,51,60,62-69,91,92,1001 */
|
||||
+ /* try to do this in an intelligent way */
|
||||
+ /* get all small commandos */
|
||||
+ switch(m)
|
||||
+ {
|
||||
+ case 7:
|
||||
+ case 9:
|
||||
+ case 22:
|
||||
+ case 23:
|
||||
+ case 26:
|
||||
+ case 28:
|
||||
+ case 50:
|
||||
+ case 51:
|
||||
+ case 60:
|
||||
+ case 91:
|
||||
+ case 92:
|
||||
+ case 1001:
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "2: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 3);
|
||||
+ }
|
||||
+
|
||||
+ if (m > 0 && m < 6 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "3: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 4);
|
||||
+ }
|
||||
+ if (m > 12 && m < 19 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "4: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 5);
|
||||
+ }
|
||||
+
|
||||
+ if (m > 34 && m < 38 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "5: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 6);
|
||||
+ }
|
||||
+
|
||||
+ if (m > 39 && m < 47 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "6: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 7);
|
||||
+ }
|
||||
+
|
||||
+ if (m > 61 && m < 70 )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "7: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 8);
|
||||
+ }
|
||||
+
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "unknown SOULSEEK command: 0x%x, first 16 bit: 0x%x, first 8 bit: 0x%x ,soulseek ???\n",get_u32(payload, 4),get_u16(payload, 4) >> 16,get_u8(payload, 4) >> 24);
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ }
|
||||
+
|
||||
+ /* match 14 00 00 00 01 yy 00 00 00 STRING(YY) 01 00 00 00 00 46|50 00 00 00 00 */
|
||||
+ /* without size at the beginning !!! */
|
||||
+ if ( get_u32(payload, 0) == 0x14 && get_u8(payload, 4) == 0x01 )
|
||||
+ {
|
||||
+ __u32 y=get_u32(payload, 5);
|
||||
+ /* we need 19 chars + string */
|
||||
+ if ( (y + 19) <= (plen) )
|
||||
+ {
|
||||
+ const unsigned char *w=payload+9+y;
|
||||
+ if (get_u32(w, 0) == 0x01 && ( get_u16(w, 4) == 0x4600 || get_u16(w, 4) == 0x5000) && get_u32(w, 6) == 0x00);
|
||||
+#ifdef IPP2P_DEBUG_SOUL
|
||||
+ printk(KERN_DEBUG "Soulssek special client command recognized\n");
|
||||
+#endif /* IPP2P_DEBUG_SOUL */
|
||||
+ return ((IPP2P_SOUL * 100) + 9);
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*Search for WinMX commands*/
|
||||
+int
|
||||
+search_winmx (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+//#define IPP2P_DEBUG_WINMX
|
||||
+ if (((plen) == 4) && (memcmp(payload, "SEND", 4) == 0)) return ((IPP2P_WINMX * 100) + 1);
|
||||
+ if (((plen) == 3) && (memcmp(payload, "GET", 3) == 0)) return ((IPP2P_WINMX * 100) + 2);
|
||||
+ //if (packet_len < (head_len + 10)) return 0;
|
||||
+ if (plen < 10) return 0;
|
||||
+
|
||||
+ if ((memcmp(payload, "SEND", 4) == 0) || (memcmp(payload, "GET", 3) == 0)){
|
||||
+ u16 c=4;
|
||||
+ const u16 end=plen-2;
|
||||
+ u8 count=0;
|
||||
+ while (c < end)
|
||||
+ {
|
||||
+ if (payload[c]== 0x20 && payload[c+1] == 0x22)
|
||||
+ {
|
||||
+ c++;
|
||||
+ count++;
|
||||
+ if (count>=2) return ((IPP2P_WINMX * 100) + 3);
|
||||
+ }
|
||||
+ c++;
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ if ( plen == 149 && payload[0] == '8' )
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_WINMX
|
||||
+ printk(KERN_INFO "maybe WinMX\n");
|
||||
+#endif
|
||||
+ if (get_u32(payload,17) == 0 && get_u32(payload,21) == 0 && get_u32(payload,25) == 0 &&
|
||||
+// get_u32(payload,33) == __constant_htonl(0x71182b1a) && get_u32(payload,37) == __constant_htonl(0x05050000) &&
|
||||
+// get_u32(payload,133) == __constant_htonl(0x31097edf) && get_u32(payload,145) == __constant_htonl(0xdcb8f792))
|
||||
+ get_u16(payload,39) == 0 && get_u16(payload,135) == __constant_htons(0x7edf) && get_u16(payload,147) == __constant_htons(0xf792))
|
||||
+
|
||||
+ {
|
||||
+#ifdef IPP2P_DEBUG_WINMX
|
||||
+ printk(KERN_INFO "got WinMX\n");
|
||||
+#endif
|
||||
+ return ((IPP2P_WINMX * 100) + 4);
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+} /*search_winmx*/
|
||||
+
|
||||
+
|
||||
+/*Search for appleJuice commands*/
|
||||
+int
|
||||
+search_apple (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if ( (plen > 7) && (payload[6] == 0x0d) && (payload[7] == 0x0a) && (memcmp(payload, "ajprot", 6) == 0)) return (IPP2P_APPLE * 100);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*Search for BitTorrent commands*/
|
||||
+int
|
||||
+search_bittorrent (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if (plen > 20)
|
||||
+ {
|
||||
+ /* test for match 0x13+"BitTorrent protocol" */
|
||||
+ if (payload[0] == 0x13)
|
||||
+ {
|
||||
+ if (memcmp(payload+1, "BitTorrent protocol", 19) == 0) return (IPP2P_BIT * 100);
|
||||
+ }
|
||||
+
|
||||
+ /* get tracker commandos, all starts with GET /
|
||||
+ * then it can follow: scrape| announce
|
||||
+ * and then ?hash_info=
|
||||
+ */
|
||||
+ if (memcmp(payload,"GET /",5) == 0)
|
||||
+ {
|
||||
+ /* message scrape */
|
||||
+ if ( memcmp(payload+5,"scrape?info_hash=",17)==0 ) return (IPP2P_BIT * 100 + 1);
|
||||
+ /* message announce */
|
||||
+ if ( memcmp(payload+5,"announce?info_hash=",19)==0 ) return (IPP2P_BIT * 100 + 2);
|
||||
+ }
|
||||
+ }
|
||||
+ else
|
||||
+ {
|
||||
+ /* bitcomet encryptes the first packet, so we have to detect another
|
||||
+ * one later in the flow */
|
||||
+ /* first try failed, too many missdetections */
|
||||
+ //if ( size == 5 && get_u32(t,0) == __constant_htonl(1) && t[4] < 3) return (IPP2P_BIT * 100 + 3);
|
||||
+
|
||||
+ /* second try: block request packets */
|
||||
+ if ( plen == 17 && get_u32(payload,0) == __constant_htonl(0x0d) && payload[4] == 0x06 && get_u32(payload,13) == __constant_htonl(0x4000) ) return (IPP2P_BIT * 100 + 3);
|
||||
+ }
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*check for Kazaa get command*/
|
||||
+int
|
||||
+search_kazaa (const unsigned char *payload, const u16 plen)
|
||||
+
|
||||
+{
|
||||
+ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a) && memcmp(payload, "GET /.hash=", 11) == 0)
|
||||
+ return (IPP2P_DATA_KAZAA * 100);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for gnutella get command*/
|
||||
+int
|
||||
+search_gnu (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
|
||||
+ {
|
||||
+ if (memcmp(payload, "GET /get/", 9) == 0) return ((IPP2P_DATA_GNU * 100) + 1);
|
||||
+ if (memcmp(payload, "GET /uri-res/", 13) == 0) return ((IPP2P_DATA_GNU * 100) + 2);
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for gnutella get commands and other typical data*/
|
||||
+int
|
||||
+search_all_gnu (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+
|
||||
+ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
|
||||
+ {
|
||||
+
|
||||
+ if (memcmp(payload, "GNUTELLA CONNECT/", 17) == 0) return ((IPP2P_GNU * 100) + 1);
|
||||
+ if (memcmp(payload, "GNUTELLA/", 9) == 0) return ((IPP2P_GNU * 100) + 2);
|
||||
+
|
||||
+
|
||||
+ if ((memcmp(payload, "GET /get/", 9) == 0) || (memcmp(payload, "GET /uri-res/", 13) == 0))
|
||||
+ {
|
||||
+ u16 c=8;
|
||||
+ const u16 end=plen-22;
|
||||
+ while (c < end) {
|
||||
+ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Gnutella-", 11) == 0) || (memcmp(&payload[c+2], "X-Queue:", 8) == 0)))
|
||||
+ return ((IPP2P_GNU * 100) + 3);
|
||||
+ c++;
|
||||
+ }
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*check for KaZaA download commands and other typical data*/
|
||||
+int
|
||||
+search_all_kazaa (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
|
||||
+ {
|
||||
+
|
||||
+ if (memcmp(payload, "GIVE ", 5) == 0) return ((IPP2P_KAZAA * 100) + 1);
|
||||
+
|
||||
+ if (memcmp(payload, "GET /", 5) == 0) {
|
||||
+ u16 c = 8;
|
||||
+ const u16 end=plen-22;
|
||||
+ while (c < end) {
|
||||
+ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Kazaa-Username: ", 18) == 0) || (memcmp(&payload[c+2], "User-Agent: PeerEnabler/", 24) == 0)))
|
||||
+ return ((IPP2P_KAZAA * 100) + 2);
|
||||
+ c++;
|
||||
+ }
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+/*fast check for edonkey file segment transfer command*/
|
||||
+int
|
||||
+search_edk (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if (payload[0] != 0xe3)
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ if (payload[5] == 0x47)
|
||||
+ return (IPP2P_DATA_EDK * 100);
|
||||
+ else
|
||||
+ return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+/*intensive but slower search for some edonkey packets including size-check*/
|
||||
+int
|
||||
+search_all_edk (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if (payload[0] != 0xe3)
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ //t += head_len;
|
||||
+ const u16 cmd = get_u16(payload, 1);
|
||||
+ if (cmd == (plen - 5)) {
|
||||
+ switch (payload[5]) {
|
||||
+ case 0x01: return ((IPP2P_EDK * 100) + 1); /*Client: hello or Server:hello*/
|
||||
+ case 0x4c: return ((IPP2P_EDK * 100) + 9); /*Client: Hello-Answer*/
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*fast check for Direct Connect send command*/
|
||||
+int
|
||||
+search_dc (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+
|
||||
+ if (payload[0] != 0x24 )
|
||||
+ return 0;
|
||||
+ else {
|
||||
+ if (memcmp(&payload[1], "Send|", 5) == 0)
|
||||
+ return (IPP2P_DATA_DC * 100);
|
||||
+ else
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/*intensive but slower check for all direct connect packets*/
|
||||
+int
|
||||
+search_all_dc (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+// unsigned char *t = haystack;
|
||||
+
|
||||
+ if (payload[0] == 0x24 && payload[plen-1] == 0x7c)
|
||||
+ {
|
||||
+ const unsigned char *t=&payload[1];
|
||||
+ /* Client-Hub-Protocol */
|
||||
+ if (memcmp(t, "Lock ", 5) == 0) return ((IPP2P_DC * 100) + 1);
|
||||
+ /* Client-Client-Protocol, some are already recognized by client-hub (like lock) */
|
||||
+ if (memcmp(t, "MyNick ", 7) == 0) return ((IPP2P_DC * 100) + 38);
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+/*check for mute*/
|
||||
+int
|
||||
+search_mute (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if ( plen == 209 || plen == 345 || plen == 473 || plen == 609 || plen == 1121 )
|
||||
+ {
|
||||
+ //printk(KERN_DEBUG "size hit: %u",size);
|
||||
+ if (memcmp(payload,"PublicKey: ",11) == 0 )
|
||||
+ {
|
||||
+ return ((IPP2P_MUTE * 100) + 0);
|
||||
+
|
||||
+/* if (memcmp(t+size-14,"\x0aEndPublicKey\x0a",14) == 0)
|
||||
+ {
|
||||
+ printk(KERN_DEBUG "end pubic key hit: %u",size);
|
||||
+
|
||||
+ }*/
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/* check for xdcc */
|
||||
+int
|
||||
+search_xdcc (const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ /* search in small packets only */
|
||||
+ if (plen > 20 && plen < 200 && payload[plen-1] == 0x0a && payload[plen-2] == 0x0d && memcmp(payload,"PRIVMSG ",8) == 0)
|
||||
+ {
|
||||
+
|
||||
+ u16 x=10;
|
||||
+ const u16 end=plen - 13;
|
||||
+
|
||||
+ /* is seems to be a irc private massage, chedck for xdcc command */
|
||||
+ while (x < end)
|
||||
+ {
|
||||
+ if (payload[x] == ':')
|
||||
+ {
|
||||
+ if ( memcmp(&payload[x+1],"xdcc send #",11) == 0 )
|
||||
+ return ((IPP2P_XDCC * 100) + 0);
|
||||
+ }
|
||||
+ x++;
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+/* search for waste */
|
||||
+int search_waste(const unsigned char *payload, const u16 plen)
|
||||
+{
|
||||
+ if ( plen >= 8 && memcmp(payload,"GET.sha1:",9) == 0)
|
||||
+ return ((IPP2P_WASTE * 100) + 0);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+static struct {
|
||||
+ int command;
|
||||
+ __u8 short_hand; /*for fucntions included in short hands*/
|
||||
+ int packet_len;
|
||||
+ int (*function_name) (const unsigned char *, const u16);
|
||||
+} matchlist[] = {
|
||||
+ {IPP2P_EDK,SHORT_HAND_IPP2P,20, &search_all_edk},
|
||||
+// {IPP2P_DATA_KAZAA,SHORT_HAND_DATA,200, &search_kazaa},
|
||||
+// {IPP2P_DATA_EDK,SHORT_HAND_DATA,60, &search_edk},
|
||||
+// {IPP2P_DATA_DC,SHORT_HAND_DATA,26, &search_dc},
|
||||
+ {IPP2P_DC,SHORT_HAND_IPP2P,5, search_all_dc},
|
||||
+// {IPP2P_DATA_GNU,SHORT_HAND_DATA,40, &search_gnu},
|
||||
+ {IPP2P_GNU,SHORT_HAND_IPP2P,5, &search_all_gnu},
|
||||
+ {IPP2P_KAZAA,SHORT_HAND_IPP2P,5, &search_all_kazaa},
|
||||
+ {IPP2P_BIT,SHORT_HAND_IPP2P,20, &search_bittorrent},
|
||||
+ {IPP2P_APPLE,SHORT_HAND_IPP2P,5, &search_apple},
|
||||
+ {IPP2P_SOUL,SHORT_HAND_IPP2P,5, &search_soul},
|
||||
+ {IPP2P_WINMX,SHORT_HAND_IPP2P,2, &search_winmx},
|
||||
+ {IPP2P_ARES,SHORT_HAND_IPP2P,5, &search_ares},
|
||||
+ {IPP2P_MUTE,SHORT_HAND_NONE,200, &search_mute},
|
||||
+ {IPP2P_WASTE,SHORT_HAND_NONE,5, &search_waste},
|
||||
+ {IPP2P_XDCC,SHORT_HAND_NONE,5, &search_xdcc},
|
||||
+ {0,0,0,NULL}
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static struct {
|
||||
+ int command;
|
||||
+ __u8 short_hand; /*for fucntions included in short hands*/
|
||||
+ int packet_len;
|
||||
+ int (*function_name) (unsigned char *, int);
|
||||
+} udp_list[] = {
|
||||
+ {IPP2P_KAZAA,SHORT_HAND_IPP2P,14, &udp_search_kazaa},
|
||||
+ {IPP2P_BIT,SHORT_HAND_IPP2P,23, &udp_search_bit},
|
||||
+ {IPP2P_GNU,SHORT_HAND_IPP2P,11, &udp_search_gnu},
|
||||
+ {IPP2P_EDK,SHORT_HAND_IPP2P,9, &udp_search_edk},
|
||||
+ {IPP2P_DC,SHORT_HAND_IPP2P,12, &udp_search_directconnect},
|
||||
+ {0,0,0,NULL}
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static int
|
||||
+match(const struct sk_buff *skb,
|
||||
+ const struct net_device *in,
|
||||
+ const struct net_device *out,
|
||||
+ const void *matchinfo,
|
||||
+ int offset,
|
||||
+
|
||||
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
|
||||
+ const void *hdr,
|
||||
+ u_int16_t datalen,
|
||||
+#endif
|
||||
+
|
||||
+ int *hotdrop)
|
||||
+{
|
||||
+ const struct ipt_p2p_info *info = matchinfo;
|
||||
+ unsigned char *haystack;
|
||||
+ struct iphdr *ip = skb->nh.iph;
|
||||
+ int p2p_result = 0, i = 0;
|
||||
+// int head_len;
|
||||
+ int hlen = ntohs(ip->tot_len)-(ip->ihl*4); /*hlen = packet-data length*/
|
||||
+
|
||||
+ /*must not be a fragment*/
|
||||
+ if (offset) {
|
||||
+ if (info->debug) printk("IPP2P.match: offset found %i \n",offset);
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+ /*make sure that skb is linear*/
|
||||
+ if(skb_is_nonlinear(skb)){
|
||||
+ if (info->debug) printk("IPP2P.match: nonlinear skb found\n");
|
||||
+ return 0;
|
||||
+ }
|
||||
+
|
||||
+
|
||||
+ haystack=(char *)ip+(ip->ihl*4); /*haystack = packet data*/
|
||||
+
|
||||
+ switch (ip->protocol){
|
||||
+ case IPPROTO_TCP: /*what to do with a TCP packet*/
|
||||
+ {
|
||||
+ struct tcphdr *tcph = (void *) ip + ip->ihl * 4;
|
||||
+
|
||||
+ if (tcph->fin) return 0; /*if FIN bit is set bail out*/
|
||||
+ if (tcph->syn) return 0; /*if SYN bit is set bail out*/
|
||||
+ if (tcph->rst) return 0; /*if RST bit is set bail out*/
|
||||
+
|
||||
+ haystack += tcph->doff * 4; /*get TCP-Header-Size*/
|
||||
+ hlen -= tcph->doff * 4;
|
||||
+ while (matchlist[i].command) {
|
||||
+ if ((((info->cmd & matchlist[i].command) == matchlist[i].command) ||
|
||||
+ ((info->cmd & matchlist[i].short_hand) == matchlist[i].short_hand)) &&
|
||||
+ (hlen > matchlist[i].packet_len)) {
|
||||
+ p2p_result = matchlist[i].function_name(haystack, hlen);
|
||||
+ if (p2p_result)
|
||||
+ {
|
||||
+ if (info->debug) printk("IPP2P.debug:TCP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
|
||||
+ p2p_result, NIPQUAD(ip->saddr),ntohs(tcph->source), NIPQUAD(ip->daddr),ntohs(tcph->dest),hlen);
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+ }
|
||||
+ i++;
|
||||
+ }
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+
|
||||
+ case IPPROTO_UDP: /*what to do with an UDP packet*/
|
||||
+ {
|
||||
+ struct udphdr *udph = (void *) ip + ip->ihl * 4;
|
||||
+
|
||||
+ while (udp_list[i].command){
|
||||
+ if ((((info->cmd & udp_list[i].command) == udp_list[i].command) ||
|
||||
+ ((info->cmd & udp_list[i].short_hand) == udp_list[i].short_hand)) &&
|
||||
+ (hlen > udp_list[i].packet_len)) {
|
||||
+ p2p_result = udp_list[i].function_name(haystack, hlen);
|
||||
+ if (p2p_result){
|
||||
+ if (info->debug) printk("IPP2P.debug:UDP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
|
||||
+ p2p_result, NIPQUAD(ip->saddr),ntohs(udph->source), NIPQUAD(ip->daddr),ntohs(udph->dest),hlen);
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+ }
|
||||
+ i++;
|
||||
+ }
|
||||
+ return p2p_result;
|
||||
+ }
|
||||
+
|
||||
+ default: return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+static int
|
||||
+checkentry(const char *tablename,
|
||||
+ const struct ipt_ip *ip,
|
||||
+ void *matchinfo,
|
||||
+ unsigned int matchsize,
|
||||
+ unsigned int hook_mask)
|
||||
+{
|
||||
+ /* Must specify -p tcp */
|
||||
+/* if (ip->proto != IPPROTO_TCP || (ip->invflags & IPT_INV_PROTO)) {
|
||||
+ * printk("ipp2p: Only works on TCP packets, use -p tcp\n");
|
||||
+ * return 0;
|
||||
+ * }*/
|
||||
+ return 1;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+
|
||||
+
|
||||
+static struct ipt_match ipp2p_match = {
|
||||
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
|
||||
+ { NULL, NULL },
|
||||
+ "ipp2p",
|
||||
+ &match,
|
||||
+ &checkentry,
|
||||
+ NULL,
|
||||
+ THIS_MODULE
|
||||
+#endif
|
||||
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
|
||||
+ .name = "ipp2p",
|
||||
+ .match = &match,
|
||||
+ .checkentry = &checkentry,
|
||||
+ .me = THIS_MODULE,
|
||||
+#endif
|
||||
+};
|
||||
+
|
||||
+
|
||||
+static int __init init(void)
|
||||
+{
|
||||
+ printk(KERN_INFO "IPP2P v%s loading\n", IPP2P_VERSION);
|
||||
+ return ipt_register_match(&ipp2p_match);
|
||||
+}
|
||||
+
|
||||
+static void __exit fini(void)
|
||||
+{
|
||||
+ ipt_unregister_match(&ipp2p_match);
|
||||
+ printk(KERN_INFO "IPP2P v%s unloaded\n", IPP2P_VERSION);
|
||||
+}
|
||||
+
|
||||
+module_init(init);
|
||||
+module_exit(fini);
|
||||
+
|
||||
+
|
||||
Reference in New Issue
Block a user