| 1 | /* |
1 | /* |
| 2 | vpn_tcp.C -- handle the tcp part of the protocol. |
2 | vpn_tcp.C -- handle the tcp part of the protocol. |
| 3 | Copyright (C) 2003-2007 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 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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29 | covered work. |
| 20 | */ |
30 | */ |
| 21 | |
31 | |
| 22 | #include "config.h" |
32 | #include "config.h" |
| 23 | |
33 | |
| 24 | #if ENABLE_TCP |
34 | #if ENABLE_TCP |
| … | |
… | |
| 57 | { |
67 | { |
| 58 | return *a < *b; |
68 | return *a < *b; |
| 59 | } |
69 | } |
| 60 | }; |
70 | }; |
| 61 | |
71 | |
| 62 | struct tcp_si_map : public map<const sockinfo *, tcp_connection *, lt_sockinfo> { |
72 | struct tcp_si_map : public map<const sockinfo *, tcp_connection *, lt_sockinfo> |
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73 | { |
| 63 | void cleaner_cb (ev::timer &w, int revents); ev::timer cleaner; |
74 | inline void cleaner_cb (ev::timer &w, int revents); ev::timer cleaner; |
| 64 | |
75 | |
| 65 | tcp_si_map () |
76 | tcp_si_map () |
| 66 | : cleaner(this, &tcp_si_map::cleaner_cb) |
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| 67 | { |
77 | { |
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78 | ev_default_loop (0); |
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79 | cleaner.set<tcp_si_map, &tcp_si_map::cleaner_cb> (this); |
| 68 | cleaner.start (::conf.keepalive / 2, ::conf.keepalive / 2); |
80 | cleaner.start (::conf.keepalive / 2, ::conf.keepalive / 2); |
| 69 | } |
81 | } |
| 70 | |
82 | |
| 71 | } tcp_si; |
83 | } tcp_si; |
| 72 | |
84 | |
| 73 | struct tcp_connection : ev::io { |
85 | struct tcp_connection : ev::io |
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86 | { |
| 74 | int tos; |
87 | int tos; |
| 75 | tstamp last_activity; |
88 | tstamp last_activity; |
| 76 | const sockinfo si; |
89 | const sockinfo si; |
| 77 | vpn &v; |
90 | vpn &v; |
| 78 | bool active; // this connection has been actively established |
91 | bool active; // this connection has been actively established |
| … | |
… | |
| 87 | #if ENABLE_HTTP_PROXY |
100 | #if ENABLE_HTTP_PROXY |
| 88 | char *proxy_req; |
101 | char *proxy_req; |
| 89 | int proxy_req_len; |
102 | int proxy_req_len; |
| 90 | #endif |
103 | #endif |
| 91 | |
104 | |
| 92 | void tcpv4_ev (ev::io &w, int revents); |
105 | inline void tcpv4_ev (ev::io &w, int revents); |
| 93 | |
106 | |
| 94 | bool send_packet (vpn_packet *pkt, int tos); |
107 | bool send_packet (vpn_packet *pkt, int tos); |
| 95 | bool write_packet (); |
108 | bool write_packet (); |
| 96 | |
109 | |
| 97 | void error (); // abort conenction && cleanup |
110 | void error (); // abort conenction && cleanup |
| … | |
… | |
| 457 | |
470 | |
| 458 | state = active ? IDLE : ERROR; |
471 | state = active ? IDLE : ERROR; |
| 459 | } |
472 | } |
| 460 | |
473 | |
| 461 | tcp_connection::tcp_connection (int fd_, const sockinfo &si_, vpn &v_) |
474 | tcp_connection::tcp_connection (int fd_, const sockinfo &si_, vpn &v_) |
| 462 | : v(v_), si(si_), ev::io(this, &tcp_connection::tcpv4_ev) |
475 | : v(v_), si(si_) |
| 463 | { |
476 | { |
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477 | set<tcp_connection, &tcp_connection::tcpv4_ev> (this); |
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478 | |
| 464 | last_activity = ev_now (); |
479 | last_activity = ev_now (); |
| 465 | r_pkt = 0; |
480 | r_pkt = 0; |
| 466 | w_pkt = 0; |
481 | w_pkt = 0; |
| 467 | tos = -1; |
482 | tos = -1; |
| 468 | fd = fd_; |
483 | fd = fd_; |
