| 1 | /* |
1 | /* |
| 2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
| 3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2008,2010,2011 Marc Lehmann <gvpe@schmorp.de> |
| 4 | |
4 | |
| 5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
| 6 | |
6 | |
| 7 | GVPE is free software; you can redistribute it and/or modify it |
7 | GVPE is free software; you can redistribute it and/or modify it |
| 8 | under the terms of the GNU General Public License as published by the |
8 | under the terms of the GNU General Public License as published by the |
| … | |
… | |
| 521 | return send_ipv4_packet (pkt, si, tos); |
521 | return send_ipv4_packet (pkt, si, tos); |
| 522 | |
522 | |
| 523 | case PROT_UDPv4: |
523 | case PROT_UDPv4: |
| 524 | return send_udpv4_packet (pkt, si, tos); |
524 | return send_udpv4_packet (pkt, si, tos); |
| 525 | |
525 | |
| 526 | #if ENABLE_TCP |
526 | #if ENABLE_TCP |
| 527 | case PROT_TCPv4: |
527 | case PROT_TCPv4: |
| 528 | return send_tcpv4_packet (pkt, si, tos); |
528 | return send_tcpv4_packet (pkt, si, tos); |
| 529 | #endif |
529 | #endif |
| 530 | #if ENABLE_ICMP |
530 | #if ENABLE_ICMP |
| 531 | case PROT_ICMPv4: |
531 | case PROT_ICMPv4: |
| … | |
… | |
| 559 | if (len > 0) |
559 | if (len > 0) |
| 560 | { |
560 | { |
| 561 | pkt->len = len; |
561 | pkt->len = len; |
| 562 | |
562 | |
| 563 | // raw sockets deliver the ipv4 header, but don't expect it on sends |
563 | // raw sockets deliver the ipv4 header, but don't expect it on sends |
| 564 | pkt->skip_hdr (IP_OVERHEAD); |
564 | pkt->skip_ipv4_hdr (); |
| 565 | |
565 | |
| 566 | recv_vpn_packet (pkt, si); |
566 | recv_vpn_packet (pkt, si); |
| 567 | } |
567 | } |
| 568 | else |
568 | else |
| 569 | { |
569 | { |
| … | |
… | |
| 606 | if (hdr->type == ::conf.icmp_type |
606 | if (hdr->type == ::conf.icmp_type |
| 607 | && hdr->code == 255) |
607 | && hdr->code == 255) |
| 608 | { |
608 | { |
| 609 | // raw sockets deliver the ipv4, but don't expect it on sends |
609 | // raw sockets deliver the ipv4, but don't expect it on sends |
| 610 | // this is slow, but... |
610 | // this is slow, but... |
| 611 | pkt->skip_hdr (ICMP_OVERHEAD); |
611 | pkt->skip_ipv4_hdr (ICMP_OVERHEAD - IP_OVERHEAD); |
| 612 | |
612 | |
| 613 | recv_vpn_packet (pkt, si); |
613 | recv_vpn_packet (pkt, si); |
| 614 | } |
614 | } |
| 615 | } |
615 | } |
| 616 | else |
616 | else |
