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/cvs/gvpe/src/device-tincd.C
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Comparing gvpe/src/device-tincd.C (file contents):
Revision 1.1 by pcg, Tue Oct 14 03:22:09 2003 UTC vs.
Revision 1.15 by pcg, Wed Mar 23 21:55:39 2005 UTC

1/* 1/*
2 device-tincd.C -- include one of the tincd low level implementations. 2 device-tincd.C -- include one of the tincd low level implementations.
3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
3 4
5 This file is part of GVPE.
6
4 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
5 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
6 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version. 10 (at your option) any later version.
8 11
9 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,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details. 15 GNU General Public License for more details.
13 16
14 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
15 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
16 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
17*/ 20*/
18 21
19#include <cstdio> 22#include <cstdio>
20#include <cstring> 23#include <cstring>
… …
27#include <syslog.h> 30#include <syslog.h>
28#include <fcntl.h> 31#include <fcntl.h>
29 32
30#include "conf.h" 33#include "conf.h"
31 34
35// following headers used by cygwin (maybe others)
36#include "netcompat.h"
37#include <signal.h>
38
39#define xstrdup(strd) strdup(str)
40
41/* make the tincd sources feel comfortable in our environment. */
42/* this was reasonably easy to do. */
32#define routing_mode 1 43#define routing_mode 1
33#define RMODE_ROUTER 0 44#define RMODE_ROUTER 0
34 45
35/* need iso c-90 or ugly workaround :( */ 46#define LOG_TO_L(level) \
36#define logger(level, ...) slog ( \
37 (level) == LOG_ERR ? L_ERR \ 47 (level) == LOG_ERR ? L_ERR \
38 : (level) == LOG_DEBUG ? L_DEBUG \ 48 : (level) == LOG_DEBUG ? L_DEBUG \
39 : (level) == LOG_WARNING ? L_WARN \ 49 : (level) == LOG_WARNING ? L_WARN \
40 : (level) == LOG_INFO ? L_INFO \ 50 : (level) == LOG_INFO ? L_INFO \
41 : L_NOTICE, __VA_ARGS__) 51 : L_NOTICE
52
53#if __STDC_VERSION__ > 199900
54# define logger(level, ...) slog (LOG_TO_L(level), __VA_ARGS__)
55#elif __GNUC__
56# define logger(level, args...) slog (LOG_TO_L(level), ## args)
57#else
58# error either need ISO-C 99 compliant compiler or gcc.
59#endif
42 60
43#define ifdebug(subsys) if (0) 61#define ifdebug(subsys) if (0)
44 62
45#define cp() 63#define cp()
46#define lookup_config(config_tree,key) (key) 64#define lookup_config(config_tree,key) (key)
47 65
48#define MTU MAXSIZE 66#define MTU MAX_MTU
49 67
50// BIGGEST hack of 'em all 68// BIGGEST hack of 'em all
51// will be casted to data_packet, due to structural similarity 69// will be casted to data_packet, due to structural similarity
52struct vpn_packet_t : net_packet { 70struct vpn_packet_t : net_packet {
53 u8 data[MAXSIZE]; 71 u8 data[MAXSIZE];
54}; 72};
55 73
56static tap_device *self;
57
58static bool overwrite_mac; 74static bool overwrite_mac;
59 75
60static bool 76static bool
61get_config_string(const char *key, char **res) 77get_config_string(const char *key, char **res)
62{ 78{
… …
75 91
76#define netname conf.ifname 92#define netname conf.ifname
77 93
78#if IF_linux 94#if IF_linux
79# include "tincd/linux/device.c" 95# include "tincd/linux/device.c"
96const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU up"; }
97
80#elif IF_freebsd 98#elif IF_freebsd
81# include "tincd/freebsd/device.c" 99# include "tincd/freebsd/device.c"
100const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU up"; }
101
82#elif IF_netbsd 102#elif IF_netbsd
103# define IF_istun 1
83# include "tincd/netbsd/device.c" 104# include "tincd/netbsd/device.c"
105const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU up"; }
106
107#elif IF_openbsd
108# define IF_istun 1
109# include "tincd/openbsd/device.c"
110const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU up"; }
111
84#elif IF_solaris 112#elif IF_solaris
113# define IF_istun 1
85# include "tincd/solaris/device.c" 114# include "tincd/solaris/device.c"
115const char * tap_device::if_up () { return ""; }
116
86#elif IF_cygwin 117#elif IF_cygwin
87# include "tincd/cygwin/device.c" 118# include "tincd/cygwin/device.c"
119const char * tap_device::if_up () { return ""; }
120
88#elif IF_mingw 121#elif IF_mingw
89# include "tincd/mingw/device.c" 122# include "tincd/mingw/device.c"
123const char * tap_device::if_up () { return ""; }
124
90#elif IF_darwin 125#elif IF_darwin
126# define IF_istun 1
91# include "tincd/darwin/device.c" 127# include "tincd/darwin/device.c"
128const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU up"; }
129
92#elif IF_raw_socket 130#elif IF_raw_socket
93# include "tincd/raw_socket/device.c" 131# include "tincd/raw_socket/device.c"
132const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU up"; }
133
134#elif IF_uml_socket
135# include "tincd/uml_socket/device.c"
136const char * tap_device::if_up () { return 0; }
137
94#else 138#else
95# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 139# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
96#endif 140#endif
97 141
142#if IF_istun
143# include "ether_emu.C"
144#endif
145
98const char * 146const char *
99tap_device::info () 147tap_device::info ()
100{ 148{
101 return _("tincd compatibility layer"); 149 return _("tincd compatibility layer");
102} 150}
103 151
104tap_device::tap_device () 152tap_device::tap_device ()
105{ 153{
106 self = this; 154 device = "(null)";
107 155
108 if (setup_device ()) 156 bool ok = setup_device ();
157
158 if (device_info)
159 device = device_info;
160
161 if (ok)
109 { 162 {
110 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 163 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
111 fd = device_fd; 164 fd = device_fd;
112 strcpy (ifrname, iface); 165 strcpy (ifrname, iface);
113 } 166 }
114 else 167 else
115 { 168 {
116 slog (L_ERR, _("error while configuring tincd device (%s/%s)"), device, info ()); 169 slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device);
117 exit (1); 170 exit (EXIT_FAILURE);
118 } 171 }
119} 172}
120 173
121tap_device::~tap_device () 174tap_device::~tap_device ()
122{ 175{
… …
129 tap_packet *pkt = new tap_packet; 182 tap_packet *pkt = new tap_packet;
130 183
131 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 184 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
132 { 185 {
133 delete pkt; 186 delete pkt;
134 slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, 187 slog (L_ERR, _("can't read from to %s %s: %s"), info (), device,
135 strerror (errno)); 188 strerror (errno));
136 return 0; 189 return 0;
137 } 190 }
138 191
192#if IF_istun
193 // assume ipv4
194 (*pkt)[12] = 0x08;
195 (*pkt)[13] = 0x00;
196
197 if (!ether_emu.tun_to_tap (pkt))
198 {
199 delete pkt;
200 return 0;
201 }
202#endif
203
139 return pkt; 204 return pkt;
140} 205}
141 206
142void 207void
143tap_device::send (tap_packet *pkt) 208tap_device::send (tap_packet *pkt)
144{ 209{
210 if (
211#if IF_istun
212 ether_emu.tap_to_tun (pkt) &&
213#endif
145 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 214 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
146 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 215 slog (L_ERR, _("can't write to %s %s: %s"), info (), device,
147 strerror (errno)); 216 strerror (errno));
148} 217}
149 218
150 219

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