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 | |
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5 | This file is part of GVPE. |
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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; |
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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 |
… | |
… | |
656 | } |
659 | } |
657 | |
660 | |
658 | void |
661 | void |
659 | connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
662 | connection::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
660 | { |
663 | { |
661 | if (!vpn->send_vpn_packet (pkt, si, tos)) |
664 | bool ok; |
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665 | |
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666 | switch (si.prot) |
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667 | { |
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668 | case PROT_IPv4: |
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669 | ok = vpn->send_ipv4_packet (pkt, si, tos); break; |
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670 | case PROT_UDPv4: |
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671 | ok = vpn->send_udpv4_packet (pkt, si, tos); break; |
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672 | #if ENABLE_TCP |
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673 | case PROT_TCPv4: |
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674 | ok = vpn->send_tcpv4_packet (pkt, si, tos); break; |
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675 | #endif |
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676 | #if ENABLE_ICMP |
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677 | case PROT_ICMPv4: |
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678 | ok = vpn->send_icmpv4_packet (pkt, si, tos); break; |
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679 | #endif |
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680 | #if ENABLE_DNS |
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681 | case PROT_DNSv4: |
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682 | ok = send_dnsv4_packet (pkt, si, tos); break; |
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683 | #endif |
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684 | |
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685 | default: |
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686 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
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687 | ok = false; |
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688 | } |
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689 | |
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690 | if (!ok) |
662 | reset_connection (); |
691 | reset_connection (); |
663 | } |
692 | } |
664 | |
693 | |
665 | void |
694 | void |
666 | connection::send_ping (const sockinfo &si, u8 pong) |
695 | connection::send_ping (const sockinfo &si, u8 pong) |
… | |
… | |
1189 | putenv ("STATE=down"); |
1218 | putenv ("STATE=down"); |
1190 | |
1219 | |
1191 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
1220 | return ::conf.script_node_up ? ::conf.script_node_down : "node-down"; |
1192 | } |
1221 | } |
1193 | |
1222 | |
1194 | connection::connection(struct vpn *vpn_) |
1223 | connection::connection (struct vpn *vpn, conf_node *conf) |
1195 | : vpn(vpn_) |
1224 | : vpn(vpn), conf(conf) |
1196 | , rekey (this, &connection::rekey_cb) |
1225 | , rekey (this, &connection::rekey_cb) |
1197 | , keepalive (this, &connection::keepalive_cb) |
1226 | , keepalive (this, &connection::keepalive_cb) |
1198 | , establish_connection (this, &connection::establish_connection_cb) |
1227 | , establish_connection (this, &connection::establish_connection_cb) |
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1228 | #if ENABLE_DNS |
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1229 | , dns (0) |
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1230 | #endif |
1199 | { |
1231 | { |
1200 | octx = ictx = 0; |
1232 | octx = ictx = 0; |
1201 | retry_cnt = 0; |
1233 | retry_cnt = 0; |
1202 | |
1234 | |
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1235 | if (!conf->protocols) // make sure some protocol is enabled |
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1236 | conf->protocols = PROT_UDPv4; |
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1237 | |
1203 | connectmode = conf_node::C_ALWAYS; // initial setting |
1238 | connectmode = conf_node::C_ALWAYS; // initial setting |
1204 | reset_connection (); |
1239 | reset_connection (); |
1205 | } |
1240 | } |
1206 | |
1241 | |
1207 | connection::~connection () |
1242 | connection::~connection () |