diff options
Diffstat (limited to 'ot_udp.c')
| -rw-r--r-- | ot_udp.c | 29 |
1 files changed, 12 insertions, 17 deletions
| @@ -17,9 +17,6 @@ | |||
| 17 | #include "ot_udp.h" | 17 | #include "ot_udp.h" |
| 18 | #include "ot_stats.h" | 18 | #include "ot_stats.h" |
| 19 | 19 | ||
| 20 | static char static_inbuf[8192]; | ||
| 21 | static char static_outbuf[8192]; | ||
| 22 | |||
| 23 | static const uint8_t g_static_connid[8] = { 0x23, 0x42, 0x05, 0x17, 0xde, 0x41, 0x50, 0xff }; | 20 | static const uint8_t g_static_connid[8] = { 0x23, 0x42, 0x05, 0x17, 0xde, 0x41, 0x50, 0xff }; |
| 24 | 21 | ||
| 25 | static void udp_make_connectionid( uint32_t * connid, const char * remoteip ) { | 22 | static void udp_make_connectionid( uint32_t * connid, const char * remoteip ) { |
| @@ -39,17 +36,17 @@ static int udp_test_connectionid( const uint32_t * const connid, const char * re | |||
| 39 | } | 36 | } |
| 40 | 37 | ||
| 41 | /* UDP implementation according to http://xbtt.sourceforge.net/udp_tracker_protocol.html */ | 38 | /* UDP implementation according to http://xbtt.sourceforge.net/udp_tracker_protocol.html */ |
| 42 | void handle_udp4( int64 serversocket ) { | 39 | void handle_udp4( int64 serversocket, struct ot_workstruct *ws ) { |
| 43 | ot_peer peer; | 40 | ot_peer peer; |
| 44 | ot_hash *hash = NULL; | 41 | ot_hash *hash = NULL; |
| 45 | char remoteip[4]; | 42 | char remoteip[4]; |
| 46 | uint32_t *inpacket = (uint32_t*)static_inbuf; | 43 | uint32_t *inpacket = (uint32_t*)ws->inbuf; |
| 47 | uint32_t *outpacket = (uint32_t*)static_outbuf; | 44 | uint32_t *outpacket = (uint32_t*)ws->outbuf; |
| 48 | uint32_t numwant, left, event; | 45 | uint32_t numwant, left, event; |
| 49 | uint16_t port, remoteport; | 46 | uint16_t port, remoteport; |
| 50 | size_t r, r_out; | 47 | size_t r, r_out; |
| 51 | 48 | ||
| 52 | r = socket_recv4( serversocket, static_inbuf, sizeof( static_inbuf ), remoteip, &remoteport); | 49 | r = socket_recv4( serversocket, ws->inbuf, ws->inbuf_size, remoteip, &remoteport); |
| 53 | 50 | ||
| 54 | stats_issue_event( EVENT_ACCEPT, FLAG_UDP, ntohl(*(uint32_t*)remoteip) ); | 51 | stats_issue_event( EVENT_ACCEPT, FLAG_UDP, ntohl(*(uint32_t*)remoteip) ); |
| 55 | stats_issue_event( EVENT_READ, FLAG_UDP, r ); | 52 | stats_issue_event( EVENT_READ, FLAG_UDP, r ); |
| @@ -58,8 +55,6 @@ void handle_udp4( int64 serversocket ) { | |||
| 58 | if( r < 16 ) | 55 | if( r < 16 ) |
| 59 | return; | 56 | return; |
| 60 | 57 | ||
| 61 | /* fprintf( stderr, "UDP Connection id: %16llX\n", *(uint64_t*)inpacket ); */ | ||
| 62 | |||
| 63 | switch( ntohl( inpacket[2] ) ) { | 58 | switch( ntohl( inpacket[2] ) ) { |
| 64 | case 0: /* This is a connect action */ | 59 | case 0: /* This is a connect action */ |
| 65 | /* look for udp bittorrent magic id */ | 60 | /* look for udp bittorrent magic id */ |
| @@ -70,7 +65,7 @@ void handle_udp4( int64 serversocket ) { | |||
| 70 | outpacket[1] = inpacket[3]; | 65 | outpacket[1] = inpacket[3]; |
| 71 | udp_make_connectionid( outpacket + 2, remoteip ); | 66 | udp_make_connectionid( outpacket + 2, remoteip ); |
| 72 | 67 | ||
| 73 | socket_send4( serversocket, static_outbuf, 16, remoteip, remoteport ); | 68 | socket_send4( serversocket, ws->outbuf, 16, remoteip, remoteport ); |
| 74 | stats_issue_event( EVENT_CONNECT, FLAG_UDP, 16 ); | 69 | stats_issue_event( EVENT_CONNECT, FLAG_UDP, 16 ); |
| 75 | break; | 70 | break; |
| 76 | case 1: /* This is an announce action */ | 71 | case 1: /* This is an announce action */ |
| @@ -88,8 +83,8 @@ void handle_udp4( int64 serversocket ) { | |||
| 88 | if (numwant > 200) numwant = 200; | 83 | if (numwant > 200) numwant = 200; |
| 89 | 84 | ||
| 90 | event = ntohl( inpacket[80/4] ); | 85 | event = ntohl( inpacket[80/4] ); |
| 91 | port = *(uint16_t*)( static_inbuf + 96 ); | 86 | port = *(uint16_t*)( ((char*)inpacket) + 96 ); |
| 92 | hash = (ot_hash*)( static_inbuf + 16 ); | 87 | hash = (ot_hash*)( ((char*)inpacket) + 16 ); |
| 93 | 88 | ||
| 94 | OT_SETIP( &peer, remoteip ); | 89 | OT_SETIP( &peer, remoteip ); |
| 95 | OT_SETPORT( &peer, &port ); | 90 | OT_SETPORT( &peer, &port ); |
| @@ -108,11 +103,11 @@ void handle_udp4( int64 serversocket ) { | |||
| 108 | outpacket[1] = inpacket[12/4]; | 103 | outpacket[1] = inpacket[12/4]; |
| 109 | 104 | ||
| 110 | if( OT_PEERFLAG( &peer ) & PEER_FLAG_STOPPED ) /* Peer is gone. */ | 105 | if( OT_PEERFLAG( &peer ) & PEER_FLAG_STOPPED ) /* Peer is gone. */ |
| 111 | r = remove_peer_from_torrent( hash, &peer, static_outbuf, FLAG_UDP ); | 106 | r = remove_peer_from_torrent( hash, &peer, ws->outbuf, FLAG_UDP ); |
| 112 | else | 107 | else |
| 113 | r = 8 + add_peer_to_torrent_and_return_peers( hash, &peer, FLAG_UDP, numwant, static_outbuf + 8 ); | 108 | r = 8 + add_peer_to_torrent_and_return_peers( hash, &peer, FLAG_UDP, numwant, ((char*)outpacket) + 8 ); |
| 114 | 109 | ||
| 115 | socket_send4( serversocket, static_outbuf, r, remoteip, remoteport ); | 110 | socket_send4( serversocket, ws->outbuf, r, remoteip, remoteport ); |
| 116 | stats_issue_event( EVENT_ANNOUNCE, FLAG_UDP, r ); | 111 | stats_issue_event( EVENT_ANNOUNCE, FLAG_UDP, r ); |
| 117 | break; | 112 | break; |
| 118 | 113 | ||
| @@ -124,9 +119,9 @@ void handle_udp4( int64 serversocket ) { | |||
| 124 | outpacket[1] = inpacket[12/4]; | 119 | outpacket[1] = inpacket[12/4]; |
| 125 | 120 | ||
| 126 | for( r_out = 0; ( r_out * 20 < r - 16) && ( r_out <= 74 ); r_out++ ) | 121 | for( r_out = 0; ( r_out * 20 < r - 16) && ( r_out <= 74 ); r_out++ ) |
| 127 | return_udp_scrape_for_torrent( (ot_hash*)( static_inbuf + 16 + 20 * r_out ), static_outbuf + 8 + 12 * r_out ); | 122 | return_udp_scrape_for_torrent( (ot_hash*)( ((char*)inpacket) + 16 + 20 * r_out ), ((char*)outpacket) + 8 + 12 * r_out ); |
| 128 | 123 | ||
| 129 | socket_send4( serversocket, static_outbuf, 8 + 12 * r_out, remoteip, remoteport ); | 124 | socket_send4( serversocket, ws->outbuf, 8 + 12 * r_out, remoteip, remoteport ); |
| 130 | stats_issue_event( EVENT_SCRAPE, FLAG_UDP, r ); | 125 | stats_issue_event( EVENT_SCRAPE, FLAG_UDP, r ); |
| 131 | break; | 126 | break; |
| 132 | } | 127 | } |
