| 1 | /* |
1 | /* |
| 2 | connection.C -- manage a single connection |
2 | connection.C -- manage a single connection |
| 3 | Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
| 4 | |
4 | |
|
|
5 | This file is part of GVPE. |
|
|
6 | |
| 5 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
10 | (at your option) any later version. |
| 9 | |
11 | |
| 10 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
15 | GNU General Public License for more details. |
| 14 | |
16 | |
| 15 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
| 17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
20 | */ |
| 19 | |
21 | |
| 20 | #include "config.h" |
22 | #include "config.h" |
| 21 | |
23 | |
| … | |
… | |
| 627 | protocol = best_protocol (THISNODE->protocols & conf->protocols); |
629 | protocol = best_protocol (THISNODE->protocols & conf->protocols); |
| 628 | |
630 | |
| 629 | // mask out protocols we cannot establish |
631 | // mask out protocols we cannot establish |
| 630 | if (!conf->udp_port) protocol &= ~PROT_UDPv4; |
632 | if (!conf->udp_port) protocol &= ~PROT_UDPv4; |
| 631 | if (!conf->tcp_port) protocol &= ~PROT_TCPv4; |
633 | if (!conf->tcp_port) protocol &= ~PROT_TCPv4; |
|
|
634 | if (!conf->dns_port) protocol &= ~PROT_DNSv4; |
| 632 | |
635 | |
| 633 | si.set (conf, protocol); |
636 | si.set (conf, protocol); |
| 634 | } |
637 | } |
| 635 | |
638 | |
| 636 | // ensure sockinfo is valid, forward if necessary |
639 | // ensure sockinfo is valid, forward if necessary |
| … | |
… | |
| 641 | { |
644 | { |
| 642 | connection *r = vpn->find_router (); |
645 | connection *r = vpn->find_router (); |
| 643 | |
646 | |
| 644 | if (r) |
647 | if (r) |
| 645 | { |
648 | { |
| 646 | slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s"), |
649 | slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s (%s)"), |
| 647 | conf->nodename, r->conf->nodename); |
650 | conf->nodename, r->conf->nodename, (const char *)r->si); |
| 648 | return r->si; |
651 | return r->si; |
| 649 | } |
652 | } |
| 650 | else |
653 | else |
| 651 | slog (L_DEBUG, _("%s: node unreachable, no common protocol"), |
654 | slog (L_DEBUG, _("%s: node unreachable, no common protocol"), |
| 652 | conf->nodename); |
655 | conf->nodename); |
| … | |
… | |
| 744 | && connectmode != conf_node::C_DISABLED |
747 | && connectmode != conf_node::C_DISABLED |
| 745 | && NOW > w.at) |
748 | && NOW > w.at) |
| 746 | { |
749 | { |
| 747 | double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6; |
750 | double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6; |
| 748 | |
751 | |
| 749 | if (retry_int < 3600 * 8) |
752 | if (retry_int < conf->max_retry) |
| 750 | retry_cnt++; |
753 | retry_cnt++; |
|
|
754 | else |
|
|
755 | retry_int = conf->max_retry; |
| 751 | |
756 | |
| 752 | w.start (NOW + retry_int); |
757 | w.start (NOW + retry_int); |
| 753 | |
758 | |
| 754 | reset_si (); |
759 | reset_si (); |
| 755 | |
760 | |
| … | |
… | |
| 782 | run_script (run_script_cb (this, &connection::script_node_down), false); |
787 | run_script (run_script_cb (this, &connection::script_node_down), false); |
| 783 | } |
788 | } |
| 784 | |
789 | |
| 785 | delete ictx; ictx = 0; |
790 | delete ictx; ictx = 0; |
| 786 | delete octx; octx = 0; |
791 | delete octx; octx = 0; |
|
|
792 | #if ENABLE_DNS |
|
|
793 | dnsv4_reset_connection (); |
|
|
794 | #endif |
| 787 | |
795 | |
| 788 | si.host= 0; |
796 | si.host = 0; |
| 789 | |
797 | |
| 790 | last_activity = 0; |
798 | last_activity = 0; |
| 791 | retry_cnt = 0; |
799 | retry_cnt = 0; |
| 792 | |
800 | |
| 793 | rekey.stop (); |
801 | rekey.stop (); |
| … | |
… | |
| 1096 | break; |
1104 | break; |
| 1097 | |
1105 | |
| 1098 | case vpn_packet::PT_CONNECT_INFO: |
1106 | case vpn_packet::PT_CONNECT_INFO: |
| 1099 | if (ictx && octx && rsi == si && pkt->hmac_chk (ictx)) |
1107 | if (ictx && octx && rsi == si && pkt->hmac_chk (ictx)) |
| 1100 | { |
1108 | { |
| 1101 | connect_info_packet *p = (connect_info_packet *) pkt; |
1109 | connect_info_packet *p = (connect_info_packet *)pkt; |
| 1102 | |
1110 | |
| 1103 | assert (p->id > 0 && p->id <= vpn->conns.size ()); // hmac-auth does not mean we accept anything |
1111 | if (p->id > 0 && p->id <= vpn->conns.size ()) // hmac-auth does not mean we accept anything |
| 1104 | |
1112 | { |
| 1105 | connection *c = vpn->conns[p->id - 1]; |
1113 | connection *c = vpn->conns[p->id - 1]; |
| 1106 | |
1114 | |
| 1107 | c->conf->protocols = p->protocols; |
1115 | c->conf->protocols = p->protocols; |
| 1108 | protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf)); |
1116 | protocol = best_protocol (c->conf->protocols & THISNODE->protocols & p->si.supported_protocols (c->conf)); |
| 1109 | p->si.upgrade_protocol (protocol, c->conf); |
1117 | p->si.upgrade_protocol (protocol, c->conf); |
| 1110 | |
1118 | |
| 1111 | slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)", |
1119 | slog (L_TRACE, "<<%d PT_CONNECT_INFO(%d,%s) (%d)", |
| 1112 | conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx); |
1120 | conf->id, p->id, (const char *)p->si, !c->ictx && !c->octx); |
| 1113 | |
1121 | |
| 1114 | const sockinfo &dsi = forward_si (p->si); |
1122 | const sockinfo &dsi = forward_si (p->si); |
| 1115 | |
1123 | |
| 1116 | if (dsi.valid ()) |
1124 | if (dsi.valid ()) |
| 1117 | c->send_auth_request (dsi, true); |
1125 | c->send_auth_request (dsi, true); |
|
|
1126 | } |
| 1118 | } |
1127 | } |
| 1119 | |
1128 | |
| 1120 | break; |
1129 | break; |
| 1121 | |
1130 | |
| 1122 | default: |
1131 | default: |
| … | |
… | |
| 1186 | putenv ("STATE=down"); |
1195 | putenv ("STATE=down"); |
| 1187 | |
1196 | |
| 1188 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
1197 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
| 1189 | } |
1198 | } |
| 1190 | |
1199 | |
| 1191 | connection::connection(struct vpn *vpn_) |
1200 | connection::connection (struct vpn *vpn, conf_node *conf) |
| 1192 | : vpn(vpn_) |
1201 | : vpn(vpn), conf(conf) |
| 1193 | , rekey (this, &connection::rekey_cb) |
1202 | , rekey (this, &connection::rekey_cb) |
| 1194 | , keepalive (this, &connection::keepalive_cb) |
1203 | , keepalive (this, &connection::keepalive_cb) |
| 1195 | , establish_connection (this, &connection::establish_connection_cb) |
1204 | , establish_connection (this, &connection::establish_connection_cb) |
|
|
1205 | #if ENABLE_DNS |
|
|
1206 | , dns (0) |
|
|
1207 | #endif |
| 1196 | { |
1208 | { |
| 1197 | octx = ictx = 0; |
1209 | octx = ictx = 0; |
| 1198 | retry_cnt = 0; |
1210 | retry_cnt = 0; |
| 1199 | |
1211 | |
|
|
1212 | if (!conf->protocols) // make sure some protocol is enabled |
|
|
1213 | conf->protocols = PROT_UDPv4; |
|
|
1214 | |
| 1200 | connectmode = conf_node::C_ALWAYS; // initial setting |
1215 | connectmode = conf_node::C_ALWAYS; // initial setting |
| 1201 | reset_connection (); |
1216 | reset_connection (); |
| 1202 | } |
1217 | } |
| 1203 | |
1218 | |
| 1204 | connection::~connection () |
1219 | connection::~connection () |
