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/cvs/gvpe/src/device-tincd.C
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Comparing gvpe/src/device-tincd.C (file contents):
Revision 1.4 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.19 by pcg, Tue Apr 26 00:55:56 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 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
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. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18*/ 20*/
19 21
20#include <cstdio> 22#include <cstdio>
21#include <cstring> 23#include <cstring>
22#include <cerrno> 24#include <cerrno>
… …
59#define ifdebug(subsys) if (0) 61#define ifdebug(subsys) if (0)
60 62
61#define cp() 63#define cp()
62#define lookup_config(config_tree,key) (key) 64#define lookup_config(config_tree,key) (key)
63 65
64#define MTU MAXSIZE 66#define MTU MAX_MTU
65 67
66// BIGGEST hack of 'em all 68// BIGGEST hack of 'em all
67// will be casted to data_packet, due to structural similarity 69// will be casted to data_packet, due to structural similarity
68struct vpn_packet_t : net_packet { 70struct vpn_packet_t : net_packet {
69 u8 data[MAXSIZE]; 71 u8 data[MAXSIZE];
70}; 72};
71 73
72static tap_device *self;
73
74static bool overwrite_mac; 74static bool overwrite_mac;
75 75
76static bool 76static bool
77get_config_string(const char *key, char **res) 77get_config_string(const char *key, char **res)
78{ 78{
79 if (!strcmp (key, "Interface")) 79 if (!strcmp (key, "Interface"))
80 *res = conf.ifname; 80 *res = conf.ifname;
81 else if (!strcmp (key, "Device")) 81 else if (!strcmp (key, "Device"))
82 *res = 0; 82 *res = 0;
83 else if (!strcmp (key, "DeviceType"))
84 *res = "tap";
83 else 85 else
84 { 86 {
85 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 87 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
86 *res = 0; 88 *res = 0;
87 } 89 }
… …
91 93
92#define netname conf.ifname 94#define netname conf.ifname
93 95
94#if IF_linux 96#if IF_linux
95# include "tincd/linux/device.c" 97# include "tincd/linux/device.c"
98const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; }
99
100#elif IF_bsd
101# include "tincd/bsd/device.c"
102const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
103
96#elif IF_freebsd 104#elif IF_freebsd
97# include "tincd/freebsd/device.c" 105# include "tincd/freebsd/device.c"
106const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
107
98#elif IF_netbsd 108#elif IF_netbsd
109# define IF_istun 1
99# include "tincd/netbsd/device.c" 110# include "tincd/netbsd/device.c"
111const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
112
113#elif IF_openbsd
114# define IF_istun 1
115# include "tincd/openbsd/device.c"
116const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
117
100#elif IF_solaris 118#elif IF_solaris
119# define IF_istun 1
101# include "tincd/solaris/device.c" 120# include "tincd/solaris/device.c"
121const char * tap_device::if_up () { return ""; }
122
102#elif IF_cygwin 123#elif IF_cygwin
103# include "tincd/cygwin/device.c" 124# include "tincd/cygwin/device.c"
125const char * tap_device::if_up () { return ""; }
126
104#elif IF_mingw 127#elif IF_mingw
105# include "tincd/mingw/device.c" 128# include "tincd/mingw/device.c"
129const char * tap_device::if_up () { return ""; }
130
106#elif IF_darwin 131#elif IF_darwin
132# define IF_istun 1
107# include "tincd/darwin/device.c" 133# include "tincd/darwin/device.c"
134const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
135
108#elif IF_raw_socket 136#elif IF_raw_socket
109# include "tincd/raw_socket/device.c" 137# include "tincd/raw_socket/device.c"
138const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
139
140#elif IF_uml_socket
141# include "tincd/uml_socket/device.c"
142const char * tap_device::if_up () { return 0; }
143
110#else 144#else
111# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 145# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
112#endif 146#endif
113 147
148#if IF_istun
149# include "ether_emu.C"
150#endif
151
114const char * 152const char *
115tap_device::info () 153tap_device::info ()
116{ 154{
117 return _("tincd compatibility layer"); 155 return _("tincd compatibility layer");
118} 156}
119 157
120tap_device::tap_device () 158tap_device::tap_device ()
121{ 159{
122 self = this; 160 device = "(null)";
123 161
124 if (setup_device ()) 162 bool ok = setup_device ();
163
164 if (device_info)
165 device = device_info;
166
167 if (ok)
125 { 168 {
126 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 169 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
127 fd = device_fd; 170 fd = device_fd;
128 strcpy (ifrname, iface); 171 strcpy (ifrname, iface);
129 } 172 }
130 else 173 else
131 { 174 {
132 slog (L_ERR, _("error while configuring tincd device (%s/%s)"), device, info ()); 175 slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device);
133 exit (1); 176 exit (EXIT_FAILURE);
134 } 177 }
135} 178}
136 179
137tap_device::~tap_device () 180tap_device::~tap_device ()
138{ 181{
… …
145 tap_packet *pkt = new tap_packet; 188 tap_packet *pkt = new tap_packet;
146 189
147 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 190 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
148 { 191 {
149 delete pkt; 192 delete pkt;
150 slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, 193 slog (L_ERR, _("can't read from to %s %s: %s"), info (), device,
151 strerror (errno)); 194 strerror (errno));
152 return 0; 195 return 0;
153 } 196 }
154 197
198#if IF_istun
199 // assume ipv4
200 (*pkt)[12] = 0x08;
201 (*pkt)[13] = 0x00;
202
203 if (!ether_emu.tun_to_tap (pkt))
204 {
205 delete pkt;
206 return 0;
207 }
208#endif
209
155 return pkt; 210 return pkt;
156} 211}
157 212
158void 213void
159tap_device::send (tap_packet *pkt) 214tap_device::send (tap_packet *pkt)
160{ 215{
216 if (
217#if IF_istun
218 ether_emu.tap_to_tun (pkt) &&
219#endif
161 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 220 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
162 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 221 slog (L_ERR, _("can't write to %s %s: %s"), info (), device,
163 strerror (errno)); 222 strerror (errno));
164} 223}
165 224
166 225

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