---- /dev/null
-+++ b/include/linux/netfilter_ipv4/ipt_ipp2p.h
-@@ -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)
---- /dev/null
-+++ b/net/ipv4/netfilter/ipt_ipp2p.c
-@@ -0,0 +1,856 @@
-+#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 bool
-+match(const struct sk_buff *skb,
-+ const struct net_device *in,
-+ const struct net_device *out,
-+ const struct xt_match *match,
-+ const void *matchinfo,
-+ int offset,
-+ unsigned int protoff,
-+ bool *hotdrop)
-+{
-+ const struct ipt_p2p_info *info = matchinfo;
-+ unsigned char *haystack;
-+ struct iphdr *ip = ip_hdr(skb);
-+ 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 bool
-+checkentry(const char *tablename,
-+ const void *ip,
-+ const struct xt_match *match,
-+ void *matchinfo,
-+ 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 = {
-+ .name = "ipp2p",
-+ .match = &match,
-+ .family = AF_INET,
-+ .matchsize = sizeof(struct ipt_p2p_info),
-+ .checkentry = &checkentry,
-+ .me = THIS_MODULE,
-+};
-+
-+
-+static int __init init(void)
-+{
-+ printk(KERN_INFO "IPP2P v%s loading\n", IPP2P_VERSION);
-+ return xt_register_match(&ipp2p_match);
-+}
-+
-+static void __exit fini(void)
-+{
-+ xt_unregister_match(&ipp2p_match);
-+ printk(KERN_INFO "IPP2P v%s unloaded\n", IPP2P_VERSION);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-+
-+
---- a/net/ipv4/netfilter/Kconfig
-+++ b/net/ipv4/netfilter/Kconfig
-@@ -64,6 +64,12 @@ config IP_NF_IPTABLES
- if IP_NF_IPTABLES
-
- # The matches.
-+config IP_NF_MATCH_IPP2P
-+ tristate "IPP2P"
-+ depends on NETFILTER_ADVANCED
-+ help
-+ Module for matching traffic of various Peer-to-Peer applications
-+
- config IP_NF_MATCH_ADDRTYPE
- tristate '"addrtype" address type match support'
- depends on NETFILTER_ADVANCED
---- a/net/ipv4/netfilter/Makefile
-+++ b/net/ipv4/netfilter/Makefile
-@@ -53,6 +53,8 @@ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
- obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
- obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
-
-+obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o
-+
- # targets
- obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
- obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
projects / openwrt.git / commitdiff