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/cvs/gvpe/src/device-tincd.C
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Comparing gvpe/src/device-tincd.C (file contents):
Revision 1.3 by pcg, Tue Oct 14 15:48:15 2003 UTC vs.
Revision 1.20 by pcg, Sun Dec 2 00:45:42 2007 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. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17*/ 20*/
18 21
19#include <cstdio> 22#include <cstdio>
20#include <cstring> 23#include <cstring>
21#include <cerrno> 24#include <cerrno>
… …
58#define ifdebug(subsys) if (0) 61#define ifdebug(subsys) if (0)
59 62
60#define cp() 63#define cp()
61#define lookup_config(config_tree,key) (key) 64#define lookup_config(config_tree,key) (key)
62 65
63#define MTU MAXSIZE 66#define MTU MAX_MTU
64 67
65// BIGGEST hack of 'em all 68// BIGGEST hack of 'em all
66// will be casted to data_packet, due to structural similarity 69// will be casted to data_packet, due to structural similarity
67struct vpn_packet_t : net_packet { 70struct vpn_packet_t : net_packet
71{
68 u8 data[MAXSIZE]; 72 u8 data[MAXSIZE];
69}; 73};
70
71static tap_device *self;
72 74
73static bool overwrite_mac; 75static bool overwrite_mac;
74 76
75static bool 77static bool
76get_config_string(const char *key, char **res) 78get_config_string(const char *key, char **res)
77{ 79{
78 if (!strcmp (key, "Interface")) 80 if (!strcmp (key, "Interface"))
79 *res = conf.ifname; 81 *res = conf.ifname;
80 else if (!strcmp (key, "Device")) 82 else if (!strcmp (key, "Device"))
81 *res = 0; 83 *res = 0;
84 else if (!strcmp (key, "DeviceType"))
85 *res = "tap";
82 else 86 else
83 { 87 {
84 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 88 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
85 *res = 0; 89 *res = 0;
86 } 90 }
… …
90 94
91#define netname conf.ifname 95#define netname conf.ifname
92 96
93#if IF_linux 97#if IF_linux
94# include "tincd/linux/device.c" 98# include "tincd/linux/device.c"
99const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; }
100
101#elif IF_bsd
102# include "tincd/bsd/device.c"
103const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
104
95#elif IF_freebsd 105#elif IF_freebsd
96# include "tincd/freebsd/device.c" 106# include "tincd/freebsd/device.c"
107const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
108
97#elif IF_netbsd 109#elif IF_netbsd
110# define IF_istun 1
98# include "tincd/netbsd/device.c" 111# include "tincd/netbsd/device.c"
112const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
113
114#elif IF_openbsd
115# define IF_istun 1
116# include "tincd/openbsd/device.c"
117const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
118
99#elif IF_solaris 119#elif IF_solaris
120# define IF_istun 1
100# include "tincd/solaris/device.c" 121# include "tincd/solaris/device.c"
122const char * tap_device::if_up () { return ""; }
123
101#elif IF_cygwin 124#elif IF_cygwin
102# include "tincd/cygwin/device.c" 125# include "tincd/cygwin/device.c"
126const char * tap_device::if_up () { return ""; }
127
103#elif IF_mingw 128#elif IF_mingw
104# include "tincd/mingw/device.c" 129# include "tincd/mingw/device.c"
130const char * tap_device::if_up () { return ""; }
131
105#elif IF_darwin 132#elif IF_darwin
133# define IF_istun 1
106# include "tincd/darwin/device.c" 134# include "tincd/darwin/device.c"
135const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
136
107#elif IF_raw_socket 137#elif IF_raw_socket
108# include "tincd/raw_socket/device.c" 138# include "tincd/raw_socket/device.c"
139const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
140
141#elif IF_uml_socket
142# include "tincd/uml_socket/device.c"
143const char * tap_device::if_up () { return 0; }
144
109#else 145#else
110# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 146# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
111#endif 147#endif
112 148
149#if IF_istun
150# include "ether_emu.C"
151#endif
152
113const char * 153const char *
114tap_device::info () 154tap_device::info ()
115{ 155{
116 return _("tincd compatibility layer"); 156 return _("tincd compatibility layer");
117} 157}
118 158
119tap_device::tap_device () 159tap_device::tap_device ()
120{ 160{
121 self = this; 161 device = "(null)";
122 162
123 if (setup_device ()) 163 bool ok = setup_device ();
164
165 if (device_info)
166 device = device_info;
167
168 if (ok)
124 { 169 {
125 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 170 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
126 fd = device_fd; 171 fd = device_fd;
127 strcpy (ifrname, iface); 172 strcpy (ifrname, iface);
128 } 173 }
129 else 174 else
130 { 175 {
131 slog (L_ERR, _("error while configuring tincd device (%s/%s)"), device, info ()); 176 slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device);
132 exit (1); 177 exit (EXIT_FAILURE);
133 } 178 }
134} 179}
135 180
136tap_device::~tap_device () 181tap_device::~tap_device ()
137{ 182{
… …
144 tap_packet *pkt = new tap_packet; 189 tap_packet *pkt = new tap_packet;
145 190
146 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 191 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
147 { 192 {
148 delete pkt; 193 delete pkt;
149 slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, 194 slog (L_ERR, _("can't read from to %s %s: %s"), info (), device,
150 strerror (errno)); 195 strerror (errno));
151 return 0; 196 return 0;
152 } 197 }
153 198
199#if IF_istun
200 // assume ipv4
201 (*pkt)[12] = 0x08;
202 (*pkt)[13] = 0x00;
203
204 if (!ether_emu.tun_to_tap (pkt))
205 {
206 delete pkt;
207 return 0;
208 }
209#endif
210
154 return pkt; 211 return pkt;
155} 212}
156 213
157void 214void
158tap_device::send (tap_packet *pkt) 215tap_device::send (tap_packet *pkt)
159{ 216{
217 if (
218#if IF_istun
219 ether_emu.tap_to_tun (pkt) &&
220#endif
160 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 221 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
161 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 222 slog (L_ERR, _("can't write to %s %s: %s"), info (), device,
162 strerror (errno)); 223 strerror (errno));
163} 224}
164 225
165 226

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