… | |
… | |
627 | protocol = best_protocol (THISNODE->protocols & conf->protocols); |
627 | protocol = best_protocol (THISNODE->protocols & conf->protocols); |
628 | |
628 | |
629 | // mask out protocols we cannot establish |
629 | // mask out protocols we cannot establish |
630 | if (!conf->udp_port) protocol &= ~PROT_UDPv4; |
630 | if (!conf->udp_port) protocol &= ~PROT_UDPv4; |
631 | if (!conf->tcp_port) protocol &= ~PROT_TCPv4; |
631 | if (!conf->tcp_port) protocol &= ~PROT_TCPv4; |
|
|
632 | if (!conf->dns_port) protocol &= ~PROT_DNSv4; |
632 | |
633 | |
633 | si.set (conf, protocol); |
634 | si.set (conf, protocol); |
634 | } |
635 | } |
635 | |
636 | |
636 | // ensure sockinfo is valid, forward if necessary |
637 | // ensure sockinfo is valid, forward if necessary |
… | |
… | |
656 | } |
657 | } |
657 | |
658 | |
658 | void |
659 | void |
659 | connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
660 | connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
660 | { |
661 | { |
661 | if (!vpn->send_vpn_packet (pkt, si, tos)) |
662 | bool ok; |
|
|
663 | |
|
|
664 | switch (si.prot) |
|
|
665 | { |
|
|
666 | case PROT_IPv4: |
|
|
667 | ok = vpn->send_ipv4_packet (pkt, si, tos); break; |
|
|
668 | case PROT_UDPv4: |
|
|
669 | ok = vpn->send_udpv4_packet (pkt, si, tos); break; |
|
|
670 | #if ENABLE_TCP |
|
|
671 | case PROT_TCPv4: |
|
|
672 | ok = vpn->send_tcpv4_packet (pkt, si, tos); break; |
|
|
673 | #endif |
|
|
674 | #if ENABLE_ICMP |
|
|
675 | case PROT_ICMPv4: |
|
|
676 | ok = vpn->send_icmpv4_packet (pkt, si, tos); break; |
|
|
677 | #endif |
|
|
678 | #if ENABLE_DNS |
|
|
679 | case PROT_DNSv4: |
|
|
680 | ok = send_dnsv4_packet (pkt, si, tos); break; |
|
|
681 | #endif |
|
|
682 | |
|
|
683 | default: |
|
|
684 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
|
|
685 | ok = false; |
|
|
686 | } |
|
|
687 | |
|
|
688 | if (!ok) |
662 | reset_connection (); |
689 | reset_connection (); |
663 | } |
690 | } |
664 | |
691 | |
665 | void |
692 | void |
666 | connection::send_ping (const sockinfo &si, u8 pong) |
693 | connection::send_ping (const sockinfo &si, u8 pong) |
… | |
… | |
744 | && connectmode != conf_node::C_DISABLED |
771 | && connectmode != conf_node::C_DISABLED |
745 | && NOW > w.at) |
772 | && NOW > w.at) |
746 | { |
773 | { |
747 | double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6; |
774 | double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6; |
748 | |
775 | |
749 | if (retry_int < 3600 * 8) |
776 | if (retry_int < conf->max_retry) |
750 | retry_cnt++; |
777 | retry_cnt++; |
|
|
778 | else |
|
|
779 | retry_int = conf->max_retry; |
751 | |
780 | |
752 | w.start (NOW + retry_int); |
781 | w.start (NOW + retry_int); |
753 | |
782 | |
754 | reset_si (); |
783 | reset_si (); |
755 | |
784 | |
… | |
… | |
783 | } |
812 | } |
784 | |
813 | |
785 | delete ictx; ictx = 0; |
814 | delete ictx; ictx = 0; |
786 | delete octx; octx = 0; |
815 | delete octx; octx = 0; |
787 | |
816 | |
788 | si.host= 0; |
817 | si.host = 0; |
789 | |
818 | |
790 | last_activity = 0; |
819 | last_activity = 0; |
791 | retry_cnt = 0; |
820 | retry_cnt = 0; |
792 | |
821 | |
793 | rekey.stop (); |
822 | rekey.stop (); |
… | |
… | |
1096 | break; |
1125 | break; |
1097 | |
1126 | |
1098 | case vpn_packet::PT_CONNECT_INFO: |
1127 | case vpn_packet::PT_CONNECT_INFO: |
1099 | if (ictx && octx && rsi == si && pkt->hmac_chk (ictx)) |
1128 | if (ictx && octx && rsi == si && pkt->hmac_chk (ictx)) |
1100 | { |
1129 | { |
1101 | connect_info_packet *p = (connect_info_packet *) pkt; |
1130 | connect_info_packet *p = (connect_info_packet *)pkt; |
1102 | |
1131 | |
1103 | assert (p->id > 0 && p->id <= vpn->conns.size ()); // hmac-auth does not mean we accept anything |
1132 | if (p->id > 0 && p->id <= vpn->conns.size ()) // hmac-auth does not mean we accept anything |
1104 | |
1133 | { |
1105 | connection *c = vpn->conns[p->id - 1]; |
1134 | connection *c = vpn->conns[p->id - 1]; |
1106 | |
1135 | |
1107 | c->conf->protocols = p->protocols; |
1136 | c->conf->protocols = p->protocols; |
1108 | protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf)); |
1137 | protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf)); |
1109 | p->si.upgrade_protocol (protocol, c->conf); |
1138 | p->si.upgrade_protocol (protocol, c->conf); |
1110 | |
1139 | |
1111 | slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)", |
1140 | slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)", |
1112 | conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx); |
1141 | conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx); |
1113 | |
1142 | |
1114 | const sockinfo &dsi = forward_si (p->si); |
1143 | const sockinfo &dsi = forward_si (p->si); |
1115 | |
1144 | |
1116 | if (dsi.valid ()) |
1145 | if (dsi.valid ()) |
1117 | c->send_auth_request (dsi, true); |
1146 | c->send_auth_request (dsi, true); |
|
|
1147 | } |
1118 | } |
1148 | } |
1119 | |
1149 | |
1120 | break; |
1150 | break; |
1121 | |
1151 | |
1122 | default: |
1152 | default: |
… | |
… | |
1186 | putenv ("STATE=down"); |
1216 | putenv ("STATE=down"); |
1187 | |
1217 | |
1188 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
1218 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
1189 | } |
1219 | } |
1190 | |
1220 | |
1191 | connection::connection(struct vpn *vpn_) |
1221 | connection::connection (struct vpn *vpn, conf_node *conf) |
1192 | : vpn(vpn_) |
1222 | : vpn(vpn), conf(conf) |
1193 | , rekey (this, &connection::rekey_cb) |
1223 | , rekey (this, &connection::rekey_cb) |
1194 | , keepalive (this, &connection::keepalive_cb) |
1224 | , keepalive (this, &connection::keepalive_cb) |
1195 | , establish_connection (this, &connection::establish_connection_cb) |
1225 | , establish_connection (this, &connection::establish_connection_cb) |
|
|
1226 | #if ENABLE_DNS |
|
|
1227 | , dnsv4_tw (this, &connection::dnsv4_cb) |
|
|
1228 | , dns_rcvdq (0), dns_snddq (0) |
|
|
1229 | , dns_rcvseq (0), dns_sndseq (0) |
|
|
1230 | #endif |
1196 | { |
1231 | { |
1197 | octx = ictx = 0; |
1232 | octx = ictx = 0; |
1198 | retry_cnt = 0; |
1233 | retry_cnt = 0; |
1199 | |
1234 | |
|
|
1235 | if (!conf->protocols) // make sure some protocol is enabled |
|
|
1236 | conf->protocols = PROT_UDPv4; |
|
|
1237 | |
1200 | connectmode = conf_node::C_ALWAYS; // initial setting |
1238 | connectmode = conf_node::C_ALWAYS; // initial setting |
1201 | reset_connection (); |
1239 | reset_connection (); |
1202 | } |
1240 | } |
1203 | |
1241 | |
1204 | connection::~connection () |
1242 | connection::~connection () |