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-rw-r--r--openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p.patch720
-rw-r--r--openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p_0.8.1rc1.patch929
2 files changed, 929 insertions, 720 deletions
diff --git a/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p.patch b/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p.patch
deleted file mode 100644
index 1314ae4fec..0000000000
--- a/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p.patch
+++ /dev/null
@@ -1,720 +0,0 @@
-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
---- linux-2.4.29.old/include/linux/netfilter_ipv4/ipt_ipp2p.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.29/include/linux/netfilter_ipv4/ipt_ipp2p.h 2005-03-12 00:44:17.000000000 +0100
-@@ -0,0 +1,29 @@
-+#ifndef __IPT_IPP2P_H
-+#define __IPT_IPP2P_H
-+#define IPP2P_VERSION "0.7.4"
-+
-+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 2
-+#define IPP2P_DATA_KAZAA 8
-+#define IPP2P_DATA_EDK 16
-+#define IPP2P_DATA_DC 32
-+#define IPP2P_DC 64
-+#define IPP2P_DATA_GNU 128
-+#define IPP2P_GNU 256
-+#define IPP2P_KAZAA 512
-+#define IPP2P_BIT 1024
-+#define IPP2P_APPLE 2048
-+#define IPP2P_SOUL 4096
-+#define IPP2P_WINMX 8192
-+#define IPP2P_ARES 16384
-+
-diff -urN linux-2.4.29.old/net/ipv4/netfilter/Config.in linux-2.4.29/net/ipv4/netfilter/Config.in
---- linux-2.4.29.old/net/ipv4/netfilter/Config.in 2005-03-12 00:40:38.000000000 +0100
-+++ linux-2.4.29/net/ipv4/netfilter/Config.in 2005-03-12 00:42:57.000000000 +0100
-@@ -26,6 +26,7 @@
- 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-2.4.29.old/net/ipv4/netfilter/ipt_ipp2p.c linux-2.4.29/net/ipv4/netfilter/ipt_ipp2p.c
---- linux-2.4.29.old/net/ipv4/netfilter/ipt_ipp2p.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.29/net/ipv4/netfilter/ipt_ipp2p.c 2005-03-12 00:44:02.000000000 +0100
-@@ -0,0 +1,661 @@
-+#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 "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 <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]) {
-+ /* e3 9a + 16Bytes Hash | size == 26 */
-+ case 0x9a: if (packet_len == 26) return ((IPP2P_EDK * 100) + 1);
-+ /* e3 96 xx yy zz kk | size == 14 | server status request */
-+ case 0x96: if (packet_len == 14) return ((IPP2P_EDK * 100) + 2);
-+ /* e3 a2 | size == 10 or 14 <-- recheck*/
-+ }
-+ }
-+
-+ case 0xc5: { /*emule*/
-+ switch (t[1]) {
-+ /* c5 91 xx yy | size == 12 (8+4) | xx != 0x00 -- xx yy queue rating */
-+ case 0x91: if ((packet_len == 12) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 3);
-+ /* c5 90 xx .. yy | size == 26 (8+2+16) | xx .. yy == hash -- file ping */
-+ case 0x90: if ((packet_len == 26) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 4);
-+ /* c5 92 | size == 10 (8+2) -- file not found */
-+ case 0x92: if (packet_len == 10) return ((IPP2P_EDK * 100) + 5);
-+ /* c5 93 | size == 10 (8+2) -- queue full */
-+ case 0x93: if (packet_len == 10) return ((IPP2P_EDK * 100) + 6);
-+ }
-+ }
-+
-+ case 0xe4: { /*kad*/
-+ switch (t[1]) {
-+ /* e4 50 | size == 12 */
-+ case 0x50: if (packet_len == 12) return ((IPP2P_EDK * 100) + 7);
-+ /* e4 58 | size == 14 */
-+ case 0x58: if ((packet_len == 14) && (t[2] != 0x00)) return ((IPP2P_EDK * 100) + 8);
-+ /* e4 59 | size == 10 */
-+ case 0x59: if (packet_len == 10) return ((IPP2P_EDK * 100) + 9);
-+ /* e4 30 .. | t[18] == 0x01 | size > 26 | --> search */
-+ case 0x30: if ((packet_len > 26) && (t[18] == 0x01)) return ((IPP2P_EDK * 100) + 10);
-+ /* e4 28 .. 00 | t[68] == 0x00 | size > 76 */
-+ case 0x28: if ((packet_len > 76) && (t[68] == 0x00)) return ((IPP2P_EDK * 100) + 11);
-+ /* e4 20 .. | size == 43 */
-+ case 0x20: if ((packet_len == 43) && (t[2] != 0x00) && (t[34] != 0x00)) return ((IPP2P_EDK * 100) + 12);
-+ /* e4 00 .. 00 | size == 35 ? */
-+ case 0x00: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 13);
-+ /* e4 10 .. 00 | size == 35 ? */
-+ case 0x10: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 14);
-+ /* e4 18 .. 00 | size == 35 ? */
-+ case 0x18: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 15);
-+ /* e4 40 .. | t[18] == 0x01 | t[19] == 0x00 | size > 40 */
-+ case 0x40: if ((packet_len > 40) && (t[18] == 0x01) && (t[19] == 0x00)) return ((IPP2P_EDK * 100) + 16);
-+ }
-+ }
-+
-+ default: return 0;
-+ } /* end of switch (t[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) + 1);
-+ if (memcmp(t, "GNUTELLA ", 9) == 0) return ((IPP2P_GNU * 100) + 2);
-+ 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);
-+ }
-+ return 0;
-+}/*udp_search_kazaa*/
-+
-+
-+/*Search for UDP BitTorrent commands*/
-+int
-+udp_search_bit (unsigned char *haystack, int packet_len)
-+{
-+ unsigned char *t = haystack;
-+
-+ /* packet_len has to be 24 */
-+ if (packet_len != 24) return 0;
-+
-+ t += 8;
-+
-+ /* ^ 00 00 04 17 27 10 19 80 */
-+ if ((ntohl(get_u32(t, 0)) == 0x00000417) && (ntohl(get_u32(t, 4)) == 0x27101980)) return (IPP2P_BIT * 100);
-+
-+ return 0;
-+}/*udp_search_bit*/
-+
-+
-+
-+/*Search for Ares commands*/
-+int
-+search_ares (unsigned char *haystack, int packet_len, int head_len)
-+{
-+ unsigned char *t = haystack;
-+ t += head_len;
-+
-+ if ((packet_len - head_len) == 6){ /* possible connect command*/
-+ if ((t[0] == 0x03) && (t[1] == 0x00) && (t[2] == 0x5a) && (t[3] == 0x04) && (t[4] == 0x03) && (t[5] == 0x05))
-+ return ((IPP2P_ARES * 100) + 1); /* found connect packet: 03 00 5a 04 03 05 */
-+ }
-+ if ((packet_len - head_len) == 60){ /* possible download command*/
-+ if ((t[59] == 0x0a) && (t[58] == 0x0a)){
-+ if (memcmp(t, "PUSH SHA1:", 10) == 0) /* found download command */
-+ return ((IPP2P_ARES * 100) + 2);
-+ }
-+ }
-+ return 0;
-+} /*search_ares*/
-+
-+
-+/*Search for SoulSeek commands*/
-+int
-+search_soul (unsigned char *haystack, int packet_len, int head_len)
-+{
-+ unsigned char *t = haystack;
-+ t += head_len;
-+
-+ if (get_u16(t, 0) == (packet_len - head_len - 4)){
-+ /* xx xx 00 00 yy zz 00 00 .. | xx = sizeof(payload) - 4 */
-+ if ((get_u16(t,2) == 0x0000) &&(t[4] != 0x00) && (get_u16(t,6) == 0x0000))
-+ return ((IPP2P_SOUL * 100) + 1);
-+ } else {
-+ /* 00 00 00 00 00 00 00 00 + sizeof(payload) == 8*/
-+ if (((packet_len - head_len) == 8) && (get_u32(t, 0) == 0x00000000) && (get_u32(t, 4) == 0x00000000))
-+ return ((IPP2P_SOUL * 100) + 2);
-+ }
-+
-+ /* 01 xx 00 00 00 yy .. zz 00 00 00 .. | xx == sizeof(nick) | yy .. zz == nick */
-+ if ((t[0] == 0x01) && (t[2] == 0x00) && (get_u16(t,3) == 0x0000) && ((packet_len - head_len) > ((get_u8(t,1))+6)) &&
-+ (t[(get_u8(t,1))+4] != 0x00) && (t[(get_u8(t,1))+5] == 0x01) && (t[(get_u8(t,1))+6] == 0x00))
-+ return ((IPP2P_SOUL * 100) + 3);
-+ return 0;
-+}
-+
-+
-+/*Search for WinMX commands*/
-+int
-+search_winmx (unsigned char *haystack, int packet_len, int head_len)
-+{
-+ unsigned char *t = haystack;
-+ int c;
-+ t += head_len;
-+
-+ if (((packet_len - head_len) == 4) && (memcmp(t, "SEND", 4) == 0)) return ((IPP2P_WINMX * 100) + 1);
-+ if (((packet_len - head_len) == 3) && (memcmp(t, "GET", 3) == 0)) return ((IPP2P_WINMX * 100) + 2);
-+ if (packet_len < (head_len + 10)) return 0;
-+
-+ if ((memcmp(t, "SEND", 4) == 0) || (memcmp(t, "GET", 3) == 0)){
-+ c = head_len + 4;
-+ t += 4;
-+ while (c < packet_len - 5) {
-+ if ((t[0] == 0x20) && (t[1] == 0x22)){
-+ c += 2;
-+ t += 2;
-+ while (c < packet_len - 2) {
-+ if ((t[0] == 0x22) && (t[1] == 0x20)) return ((IPP2P_WINMX * 100) + 3);
-+ t++;
-+ c++;
-+ }
-+ }
-+ t++;
-+ c++;
-+ }
-+ }
-+ return 0;
-+} /*search_winmx*/
-+
-+
-+/*Search for appleJuice commands*/
-+int
-+search_apple (unsigned char *haystack, int packet_len, int head_len)
-+{
-+ unsigned char *t = haystack;
-+ t += head_len;
-+
-+ if ((memcmp(t, "ajprot", 6) == 0) && (t[6] == 0x0d) && (t[7] == 0x0a)) return (IPP2P_APPLE * 100);
-+
-+ return 0;
-+}
-+
-+
-+/*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;
-+
-+ 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
diff --git a/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p_0.8.1rc1.patch b/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p_0.8.1rc1.patch
new file mode 100644
index 0000000000..bfaa6e4b76
--- /dev/null
+++ b/openwrt/target/linux/generic-2.4/patches/601-netfilter_ipp2p_0.8.1rc1.patch
@@ -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);
++
++
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 16:07:03 +0000