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pcg |
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/* |
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vpn_dns.C -- handle the dns tunnel part of the protocol. |
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Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include "config.h" |
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#if ENABLE_DNS |
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// dns processing is EXTREMELY ugly. For obvious(?) reasons. |
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// it's a hack, use only in emergency situations please. |
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#include <cstring> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/wait.h> |
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#include <sys/uio.h> |
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#include <errno.h> |
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#include <time.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <map> |
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#include "netcompat.h" |
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#include "vpn.h" |
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#if ENABLE_HTTP_PROXY |
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# include "conf.h" |
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#endif |
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#define MIN_RETRY 1. |
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#define MAX_RETRY 60. |
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#define SERVER conf.dns_port |
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/* |
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protocol, in shorthand :) |
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<cseqno> ANY? poll for more data |
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=> TXT <sseqno><data> |
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<cseqno><data> TXT? send more data |
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=> TXT <empty> |
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sequence numbers are 12 bit, 9 bit packet-number and 3 bit fragment id (7 |
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- id, actually) last fragment is sent first, however |
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*/ |
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void |
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vpn::dnsv4_ev (io_watcher &w, short revents) |
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{ |
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if (revents & EVENT_READ) |
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{ |
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struct sockaddr_in sa; |
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socklen_t sa_len = sizeof (sa); |
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int len; |
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} |
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} |
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bool |
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vpn::send_dnsv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
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{ |
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//return i->send_packet (pkt, tos); |
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} |
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#endif |
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