| 1 | /* |
1 | /* |
| 2 | connection.C -- manage a single connection |
2 | connection.C -- manage a single connection |
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3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
| 3 | |
4 | |
| 4 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
6 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2 of the License, or |
7 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
8 | (at your option) any later version. |
| … | |
… | |
| 800 | reset_connection (); |
801 | reset_connection (); |
| 801 | establish_connection (); |
802 | establish_connection (); |
| 802 | } |
803 | } |
| 803 | |
804 | |
| 804 | void |
805 | void |
| 805 | connection::send_data_packet (tap_packet *pkt, bool broadcast) |
806 | connection::send_data_packet (tap_packet *pkt) |
| 806 | { |
807 | { |
| 807 | vpndata_packet *p = new vpndata_packet; |
808 | vpndata_packet *p = new vpndata_packet; |
| 808 | int tos = 0; |
809 | int tos = 0; |
| 809 | |
810 | |
| 810 | // I am not hilarious about peeking into packets, but so be it. |
811 | // I am not hilarious about peeking into packets, but so be it. |
| 811 | if (conf->inherit_tos |
812 | if (conf->inherit_tos && pkt->is_ipv4 ()) |
| 812 | && (*pkt)[12] == 0x08 && (*pkt)[13] == 0x00 // IP |
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| 813 | && ((*pkt)[14] & 0xf0) == 0x40) // IPv4 |
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| 814 | tos = (*pkt)[15] & IPTOS_TOS_MASK; |
813 | tos = (*pkt)[15] & IPTOS_TOS_MASK; |
| 815 | |
814 | |
| 816 | p->setup (this, broadcast ? 0 : conf->id, &((*pkt)[6 + 6]), pkt->len - 6 - 6, ++oseqno); // skip 2 macs |
815 | p->setup (this, conf->id, &((*pkt)[6 + 6]), pkt->len - 6 - 6, ++oseqno); // skip 2 macs |
| 817 | send_vpn_packet (p, si, tos); |
816 | send_vpn_packet (p, si, tos); |
| 818 | |
817 | |
| 819 | delete p; |
818 | delete p; |
| 820 | |
819 | |
| 821 | if (oseqno > MAX_SEQNO) |
820 | if (oseqno > MAX_SEQNO) |
| 822 | rekey (); |
821 | rekey (); |
| 823 | } |
822 | } |
| 824 | |
823 | |
| 825 | void |
824 | void |
| 826 | connection::inject_data_packet (tap_packet *pkt, bool broadcast) |
825 | connection::inject_data_packet (tap_packet *pkt, bool broadcast/*TODO DDD*/) |
| 827 | { |
826 | { |
| 828 | if (ictx && octx) |
827 | if (ictx && octx) |
| 829 | send_data_packet (pkt, broadcast); |
828 | send_data_packet (pkt); |
| 830 | else |
829 | else |
| 831 | { |
830 | { |
| 832 | if (!broadcast)//DDDD |
831 | if (!broadcast)//DDDD |
| 833 | data_queue.put (new tap_packet (*pkt)); |
832 | data_queue.put (new tap_packet (*pkt)); |
| 834 | |
833 | |
| … | |
… | |
| 1037 | |
1036 | |
| 1038 | if (iseqno.recv_ok (seqno)) |
1037 | if (iseqno.recv_ok (seqno)) |
| 1039 | { |
1038 | { |
| 1040 | vpn->tap->send (d); |
1039 | vpn->tap->send (d); |
| 1041 | |
1040 | |
| 1042 | if (p->dst () == 0) // re-broadcast |
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| 1043 | for (vpn::conns_vector::iterator i = vpn->conns.begin (); i != vpn->conns.end (); ++i) |
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| 1044 | { |
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| 1045 | connection *c = *i; |
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| 1046 | |
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| 1047 | if (c->conf != THISNODE && c->conf != conf) |
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| 1048 | c->inject_data_packet (d); |
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| 1049 | } |
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| 1050 | |
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| 1051 | if (si != rsi) |
1041 | if (si != rsi) |
| 1052 | { |
1042 | { |
| 1053 | // fast re-sync on connection changes, useful especially for tcp/ip |
1043 | // fast re-sync on connection changes, useful especially for tcp/ip |
| 1054 | si = rsi; |
1044 | si = rsi; |
| 1055 | |
1045 | |
