1 | /* |
1 | /* |
2 | connection.h -- header for connection.C |
2 | connection.h -- header for connection.C |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
6 | |
6 | |
7 | GVPE is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify it |
8 | it under the terms of the GNU General Public License as published by |
8 | under the terms of the GNU General Public License as published by the |
9 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
10 | (at your option) any later version. |
10 | option) any later version. |
11 | |
11 | |
12 | 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, but |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
15 | GNU General Public License for more details. |
15 | Public License for more details. |
16 | |
16 | |
17 | 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 along |
18 | along with gvpe; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
19 | |
|
|
20 | Additional permission under GNU GPL version 3 section 7 |
|
|
21 | |
|
|
22 | If you modify this Program, or any covered work, by linking or |
|
|
23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
|
|
24 | version of that library), containing parts covered by the terms of the |
|
|
25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
|
|
26 | additional permission to convey the resulting work. Corresponding |
|
|
27 | Source for a non-source form of such a combination shall include the |
|
|
28 | source code for the parts of OpenSSL used as well as that of the |
|
|
29 | covered work. |
20 | */ |
30 | */ |
21 | |
31 | |
22 | #ifndef GVPE_CONNECTION_H__ |
32 | #ifndef GVPE_CONNECTION_H__ |
23 | #define GVPE_CONNECTION_H__ |
33 | #define GVPE_CONNECTION_H__ |
24 | |
34 | |
… | |
… | |
71 | PT_PING, PT_PONG, // wasting namespace space? ;) |
81 | PT_PING, PT_PONG, // wasting namespace space? ;) |
72 | PT_AUTH_REQ, // authentification request |
82 | PT_AUTH_REQ, // authentification request |
73 | PT_AUTH_RES, // authentification response |
83 | PT_AUTH_RES, // authentification response |
74 | PT_CONNECT_REQ, // want other node to contact me |
84 | PT_CONNECT_REQ, // want other node to contact me |
75 | PT_CONNECT_INFO, // request connection to some node |
85 | PT_CONNECT_INFO, // request connection to some node |
76 | PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu |
86 | PT_DATA_BRIDGED, // uncompressed packet with foreign mac pot. larger than path mtu (NYI) |
77 | PT_MAX |
87 | PT_MAX |
78 | }; |
88 | }; |
79 | |
89 | |
80 | u8 type; |
90 | u8 type; |
81 | u8 srcdst, src1, dst1; |
91 | u8 srcdst, src1, dst1; |
… | |
… | |
142 | |
152 | |
143 | sockinfo si; // the current(!) destination ip to send packets to |
153 | sockinfo si; // the current(!) destination ip to send packets to |
144 | int retry_cnt; |
154 | int retry_cnt; |
145 | |
155 | |
146 | tstamp last_activity; // time of last packet received |
156 | tstamp last_activity; // time of last packet received |
|
|
157 | tstamp last_establish_attempt; |
|
|
158 | //tstamp last_si_change; // time we last changed the socket address |
147 | |
159 | |
148 | u32 oseqno; |
160 | u32 oseqno; |
149 | sliding_window iseqno; |
161 | sliding_window iseqno; |
150 | |
162 | |
151 | u8 protocol; |
163 | u8 protocol; |
152 | u8 features; |
164 | u8 features; |
|
|
165 | bool is_direct; // current connection (si) is direct? |
153 | |
166 | |
154 | pkt_queue data_queue, vpn_queue; |
167 | pkt_queue data_queue, vpn_queue; |
155 | |
168 | |
156 | crypto_ctx *octx, *ictx; |
169 | crypto_ctx *octx, *ictx; |
157 | |
170 | |
158 | #if ENABLE_DNS |
171 | #if ENABLE_DNS |
159 | struct dns_connection *dns; |
172 | struct dns_connection *dns; |
160 | |
|
|
161 | void dnsv4_reset_connection (); |
|
|
162 | #endif |
173 | #endif |
163 | |
174 | |
164 | enum conf_node::connectmode connectmode; |
175 | enum conf_node::connectmode connectmode; |
165 | u8 prot_minor; // minor number of other side |
176 | u8 prot_minor; // minor number of other side |
166 | |
177 | |
… | |
… | |
181 | void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols); |
192 | void send_connect_info (int rid, const sockinfo &rsi, u8 rprotocols); |
182 | void send_reset (const sockinfo &dsi); |
193 | void send_reset (const sockinfo &dsi); |
183 | void send_ping (const sockinfo &dsi, u8 pong = 0); |
194 | void send_ping (const sockinfo &dsi, u8 pong = 0); |
184 | void send_data_packet (tap_packet *pkt); |
195 | void send_data_packet (tap_packet *pkt); |
185 | |
196 | |
|
|
197 | void post_inject_queue (); |
186 | void inject_data_packet (tap_packet *pkt, bool broadcast = false); |
198 | void inject_data_packet (tap_packet *pkt); |
187 | void inject_vpn_packet (vpn_packet *pkt, int tos = 0); // for forwarding |
199 | void inject_vpn_packet (vpn_packet *pkt, int tos = 0); // for forwarding |
188 | |
200 | |
189 | void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi); |
201 | void recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi); |
190 | void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0); |
202 | void send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos = 0); |
191 | |
203 | |
192 | void script_init_env (const char *ext); |
204 | void script_init_env (const char *ext); |
193 | void script_init_connect_env (); |
205 | void script_init_connect_env (); |
194 | const char *script_node_up (); |
206 | const char *script_node_up (); |
|
|
207 | const char *script_node_change (); |
195 | const char *script_node_down (); |
208 | const char *script_node_down (); |
196 | |
209 | |
197 | void dump_status (); |
210 | void dump_status (); |
198 | |
211 | |
199 | connection (struct vpn *vpn, conf_node *conf); |
212 | connection (struct vpn *vpn, conf_node *conf); |