diff options
author | nico <nico@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2005-11-13 23:18:09 +0000 |
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committer | nico <nico@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2005-11-13 23:18:09 +0000 |
commit | 1d35507536227a75978c624b4074d89061990b08 (patch) | |
tree | 2ee9d8e745492bf3f0f2623bca933565fa7f0f58 /target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch | |
parent | bcce58140c1809255bab3a4f365c3afa359bad4a (diff) |
rename netfilter patches to be in the 6xx range
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2476 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch')
-rw-r--r-- | target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch | 720 |
1 files changed, 720 insertions, 0 deletions
diff --git a/target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch b/target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch new file mode 100644 index 000000000..1314ae4fe --- /dev/null +++ b/target/linux/linux-2.4/patches/generic/601-netfilter_ipp2p.patch @@ -0,0 +1,720 @@ +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 |