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Comparing gvpe/src/connection.C (file contents):
Revision 1.43 by pcg, Fri Mar 4 04:52:38 2005 UTC vs.
Revision 1.49 by pcg, Sat Mar 12 18:10:40 2005 UTC

478{ 478{
479 prot_major = PROTOCOL_MAJOR; 479 prot_major = PROTOCOL_MAJOR;
480 prot_minor = PROTOCOL_MINOR; 480 prot_minor = PROTOCOL_MINOR;
481 randsize = RAND_SIZE; 481 randsize = RAND_SIZE;
482 hmaclen = HMACLENGTH; 482 hmaclen = HMACLENGTH;
483 flags = ENABLE_COMPRESSION ? 0x81 : 0x80; 483 flags = 0;
484 challengelen = sizeof (rsachallenge); 484 challengelen = sizeof (rsachallenge);
485 features = get_features (); 485 features = get_features ();
486 486
487 cipher_nid = htonl (EVP_CIPHER_nid (CIPHER)); 487 cipher_nid = htonl (EVP_CIPHER_nid (CIPHER));
488 digest_nid = htonl (EVP_MD_type (RSA_HASH)); 488 digest_nid = htonl (EVP_MD_type (RSA_HASH));
498 slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR); 498 slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR);
499 else if (randsize != RAND_SIZE) 499 else if (randsize != RAND_SIZE)
500 slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE); 500 slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE);
501 else if (hmaclen != HMACLENGTH) 501 else if (hmaclen != HMACLENGTH)
502 slog (L_WARN, _("hmac length mismatch (remote %d <=> local %d)"), hmaclen, HMACLENGTH); 502 slog (L_WARN, _("hmac length mismatch (remote %d <=> local %d)"), hmaclen, HMACLENGTH);
503#if 0 // this implementation should handle all flag settings
504 else if (flags != curflags ())
505 slog (L_WARN, _("flag mismatch (remote %x <=> local %x)"), flags, curflags ());
506#endif
507 else if (challengelen != sizeof (rsachallenge)) 503 else if (challengelen != sizeof (rsachallenge))
508 slog (L_WARN, _("challenge length mismatch (remote %d <=> local %d)"), challengelen, sizeof (rsachallenge)); 504 slog (L_WARN, _("challenge length mismatch (remote %d <=> local %d)"), challengelen, sizeof (rsachallenge));
509 else if (cipher_nid != htonl (EVP_CIPHER_nid (CIPHER))) 505 else if (cipher_nid != htonl (EVP_CIPHER_nid (CIPHER)))
510 slog (L_WARN, _("cipher mismatch (remote %x <=> local %x)"), ntohl (cipher_nid), EVP_CIPHER_nid (CIPHER)); 506 slog (L_WARN, _("cipher mismatch (remote %x <=> local %x)"), ntohl (cipher_nid), EVP_CIPHER_nid (CIPHER));
511 else if (digest_nid != htonl (EVP_MD_type (RSA_HASH))) 507 else if (digest_nid != htonl (EVP_MD_type (RSA_HASH)))
644 { 640 {
645 connection *r = vpn->find_router (); 641 connection *r = vpn->find_router ();
646 642
647 if (r) 643 if (r)
648 { 644 {
649 slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s"), 645 slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s (%s)"),
650 conf->nodename, r->conf->nodename); 646 conf->nodename, r->conf->nodename, (const char *)r->si);
651 return r->si; 647 return r->si;
652 } 648 }
653 else 649 else
654 slog (L_DEBUG, _("%s: node unreachable, no common protocol"), 650 slog (L_DEBUG, _("%s: node unreachable, no common protocol"),
655 conf->nodename); 651 conf->nodename);
659} 655}
660 656
661void 657void
662connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) 658connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos)
663{ 659{
664 bool ok; 660 if (!vpn->send_vpn_packet (pkt, si, tos))
665
666 switch (si.prot)
667 {
668 case PROT_IPv4:
669 ok = vpn->send_ipv4_packet (pkt, si, tos); break;
670 case PROT_UDPv4:
671 ok = vpn->send_udpv4_packet (pkt, si, tos); break;
672#if ENABLE_TCP
673 case PROT_TCPv4:
674 ok = vpn->send_tcpv4_packet (pkt, si, tos); break;
675#endif
676#if ENABLE_ICMP
677 case PROT_ICMPv4:
678 ok = vpn->send_icmpv4_packet (pkt, si, tos); break;
679#endif
680#if ENABLE_DNS
681 case PROT_DNSv4:
682 ok = send_dnsv4_packet (pkt, si, tos); break;
683#endif
684
685 default:
686 slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si);
687 ok = false;
688 }
689
690 if (!ok)
691 reset_connection (); 661 reset_connection ();
692} 662}
693 663
694void 664void
695connection::send_ping (const sockinfo &si, u8 pong) 665connection::send_ping (const sockinfo &si, u8 pong)
771 && conf != THISNODE 741 && conf != THISNODE
772 && connectmode != conf_node::C_NEVER 742 && connectmode != conf_node::C_NEVER
773 && connectmode != conf_node::C_DISABLED 743 && connectmode != conf_node::C_DISABLED
774 && NOW > w.at) 744 && NOW > w.at)
775 { 745 {
776 double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6; 746 w.at = TSTAMP_MAX; // first disable this watcher in case of recursion
777 747
778 if (retry_int < conf->max_retry) 748 double retry_int = double (retry_cnt & 3
779 retry_cnt++; 749 ? (retry_cnt & 3) + 1
780 else 750 : 1 << (retry_cnt >> 2));
781 retry_int = conf->max_retry;
782
783 w.start (NOW + retry_int);
784 751
785 reset_si (); 752 reset_si ();
753
754 bool slow = si.prot & PROT_SLOW;
786 755
787 if (si.prot && !si.host) 756 if (si.prot && !si.host)
788 vpn->send_connect_request (conf->id); 757 vpn->send_connect_request (conf->id);
789 else 758 else
790 { 759 {
791 const sockinfo &dsi = forward_si (si); 760 const sockinfo &dsi = forward_si (si);
761
762 slow = slow || (dsi.prot & PROT_SLOW);
792 763
793 if (dsi.valid () && auth_rate_limiter.can (dsi)) 764 if (dsi.valid () && auth_rate_limiter.can (dsi))
794 { 765 {
795 if (retry_cnt < 4) 766 if (retry_cnt < 4)
796 send_auth_request (dsi, true); 767 send_auth_request (dsi, true);
797 else 768 else
798 send_ping (dsi, 0); 769 send_ping (dsi, 0);
799 } 770 }
800 } 771 }
772
773 retry_int *= slow ? 8. : 0.7;
774
775 if (retry_int < conf->max_retry)
776 retry_cnt++;
777 else
778 retry_int = conf->max_retry;
779
780 w.start (NOW + retry_int);
801 } 781 }
802} 782}
803 783
804void 784void
805connection::reset_connection () 785connection::reset_connection ()
813 run_script (run_script_cb (this, &connection::script_node_down), false); 793 run_script (run_script_cb (this, &connection::script_node_down), false);
814 } 794 }
815 795
816 delete ictx; ictx = 0; 796 delete ictx; ictx = 0;
817 delete octx; octx = 0; 797 delete octx; octx = 0;
798#if ENABLE_DNS
799 dnsv4_reset_connection ();
800#endif
818 801
819 si.host = 0; 802 si.host = 0;
820 803
821 last_activity = 0; 804 last_activity = 0;
822 retry_cnt = 0; 805 retry_cnt = 0;
961 delete octx; 944 delete octx;
962 945
963 octx = new crypto_ctx (k, 1); 946 octx = new crypto_ctx (k, 1);
964 oseqno = ntohl (*(u32 *)&k[CHG_SEQNO]) & 0x7fffffff; 947 oseqno = ntohl (*(u32 *)&k[CHG_SEQNO]) & 0x7fffffff;
965 948
966 // compatibility code, remove when no longer required
967 if (p->flags & 1) p->features |= FEATURE_COMPRESSION;
968
969 conf->protocols = p->protocols; 949 conf->protocols = p->protocols;
970 features = p->features & config_packet::get_features (); 950 features = p->features & config_packet::get_features ();
971 951
972 send_auth_response (rsi, p->id, k); 952 send_auth_response (rsi, p->id, k);
973 953

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