| 1 | /* |
1 | /* |
| 2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
| 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 | |
| … | |
… | |
| 265 | reconnect_all (); |
267 | reconnect_all (); |
| 266 | |
268 | |
| 267 | return 0; |
269 | return 0; |
| 268 | } |
270 | } |
| 269 | |
271 | |
| 270 | // send a vpn packet out to other hosts |
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| 271 | bool |
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| 272 | vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
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| 273 | { |
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| 274 | switch (si.prot) |
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| 275 | { |
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| 276 | case PROT_IPv4: |
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| 277 | return send_ipv4_packet (pkt, si, tos); |
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| 278 | |
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| 279 | case PROT_UDPv4: |
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| 280 | return send_udpv4_packet (pkt, si, tos); |
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| 281 | |
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| 282 | #if ENABLE_TCP |
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| 283 | case PROT_TCPv4: |
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| 284 | return send_tcpv4_packet (pkt, si, tos); |
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| 285 | #endif |
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| 286 | |
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| 287 | #if ENABLE_ICMP |
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| 288 | case PROT_ICMPv4: |
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| 289 | return send_icmpv4_packet (pkt, si, tos); |
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| 290 | #endif |
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| 291 | |
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| 292 | #if ENABLE_DNS |
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| 293 | case PROT_DNSv4: |
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| 294 | return send_dnsv4_packet (pkt, si, tos); |
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| 295 | #endif |
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| 296 | |
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| 297 | default: |
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| 298 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
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| 299 | return false; |
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| 300 | } |
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| 301 | } |
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| 302 | |
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| 303 | bool |
272 | bool |
| 304 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
273 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
| 305 | { |
274 | { |
| 306 | #if defined(SOL_IP) && defined(IP_TOS) |
275 | #if defined(SOL_IP) && defined(IP_TOS) |
| 307 | setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
276 | setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
| … | |
… | |
| 639 | connection_init (); |
608 | connection_init (); |
| 640 | |
609 | |
| 641 | for (configuration::node_vector::iterator i = conf.nodes.begin (); |
610 | for (configuration::node_vector::iterator i = conf.nodes.begin (); |
| 642 | i != conf.nodes.end (); ++i) |
611 | i != conf.nodes.end (); ++i) |
| 643 | { |
612 | { |
| 644 | connection *conn = new connection (this); |
613 | connection *conn = new connection (this, *i); |
| 645 | |
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| 646 | conn->conf = *i; |
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| 647 | conns.push_back (conn); |
614 | conns.push_back (conn); |
| 648 | |
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| 649 | conn->establish_connection (); |
615 | conn->establish_connection (); |
| 650 | } |
616 | } |
| 651 | } |
617 | } |
| 652 | |
618 | |
| 653 | connection *vpn::find_router () |
619 | connection *vpn::find_router () |
| 654 | { |
620 | { |
| 655 | u32 prio = 0; |
621 | u32 prio = 1; |
| 656 | connection *router = 0; |
622 | connection *router = 0; |
| 657 | |
623 | |
| 658 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
624 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
| 659 | { |
625 | { |
| 660 | connection *c = *i; |
626 | connection *c = *i; |
