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Comparing gvpe/src/device-tincd.C (file contents):
Revision 1.2 by pcg, Tue Oct 14 03:59:32 2003 UTC vs.
Revision 1.21 by pcg, Thu Aug 7 17:54:26 2008 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) 2003-2008 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 it
5 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
6 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
7 (at your option) any later version. 10 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, but
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 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 GNU General
12 GNU General Public License for more details. 15 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 along
15 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
16 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
17*/ 30*/
18 31
19#include <cstdio> 32#include <cstdio>
20#include <cstring> 33#include <cstring>
21#include <cerrno> 34#include <cerrno>
… …
27#include <syslog.h> 40#include <syslog.h>
28#include <fcntl.h> 41#include <fcntl.h>
29 42
30#include "conf.h" 43#include "conf.h"
31 44
45// following headers used by cygwin (maybe others)
46#include "netcompat.h"
47#include <signal.h>
48
49#define xstrdup(strd) strdup(str)
50
32/* make the tincd sources feel comfortable in our environment. */ 51/* make the tincd sources feel comfortable in our environment. */
33/* this was reasonably easy to do. */ 52/* this was reasonably easy to do. */
34#define routing_mode 1 53#define routing_mode 1
35#define RMODE_ROUTER 0 54#define RMODE_ROUTER 0
36 55
… …
52#define ifdebug(subsys) if (0) 71#define ifdebug(subsys) if (0)
53 72
54#define cp() 73#define cp()
55#define lookup_config(config_tree,key) (key) 74#define lookup_config(config_tree,key) (key)
56 75
57#define MTU MAXSIZE 76#define MTU MAX_MTU
58 77
59// BIGGEST hack of 'em all 78// BIGGEST hack of 'em all
60// will be casted to data_packet, due to structural similarity 79// will be casted to data_packet, due to structural similarity
61struct vpn_packet_t : net_packet { 80struct vpn_packet_t : net_packet
81{
62 u8 data[MAXSIZE]; 82 u8 data[MAXSIZE];
63}; 83};
64
65static tap_device *self;
66 84
67static bool overwrite_mac; 85static bool overwrite_mac;
68 86
69static bool 87static bool
70get_config_string(const char *key, char **res) 88get_config_string(const char *key, char **res)
71{ 89{
72 if (!strcmp (key, "Interface")) 90 if (!strcmp (key, "Interface"))
73 *res = conf.ifname; 91 *res = conf.ifname;
74 else if (!strcmp (key, "Device")) 92 else if (!strcmp (key, "Device"))
75 *res = 0; 93 *res = 0;
94 else if (!strcmp (key, "DeviceType"))
95 *res = "tap";
76 else 96 else
77 { 97 {
78 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 98 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
79 *res = 0; 99 *res = 0;
80 } 100 }
… …
84 104
85#define netname conf.ifname 105#define netname conf.ifname
86 106
87#if IF_linux 107#if IF_linux
88# include "tincd/linux/device.c" 108# include "tincd/linux/device.c"
109const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; }
110
111#elif IF_bsd
112# include "tincd/bsd/device.c"
113const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
114
89#elif IF_freebsd 115#elif IF_freebsd
90# include "tincd/freebsd/device.c" 116# include "tincd/freebsd/device.c"
117const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
118
91#elif IF_netbsd 119#elif IF_netbsd
120# define IF_istun 1
92# include "tincd/netbsd/device.c" 121# include "tincd/netbsd/device.c"
122const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
123
124#elif IF_openbsd
125# define IF_istun 1
126# include "tincd/openbsd/device.c"
127const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; }
128
93#elif IF_solaris 129#elif IF_solaris
130# define IF_istun 1
94# include "tincd/solaris/device.c" 131# include "tincd/solaris/device.c"
132const char * tap_device::if_up () { return ""; }
133
95#elif IF_cygwin 134#elif IF_cygwin
96# include "tincd/cygwin/device.c" 135# include "tincd/cygwin/device.c"
136const char * tap_device::if_up () { return ""; }
137
97#elif IF_mingw 138#elif IF_mingw
98# include "tincd/mingw/device.c" 139# include "tincd/mingw/device.c"
140const char * tap_device::if_up () { return ""; }
141
99#elif IF_darwin 142#elif IF_darwin
143# define IF_istun 1
100# include "tincd/darwin/device.c" 144# include "tincd/darwin/device.c"
145const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
146
101#elif IF_raw_socket 147#elif IF_raw_socket
102# include "tincd/raw_socket/device.c" 148# include "tincd/raw_socket/device.c"
149const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; }
150
151#elif IF_uml_socket
152# include "tincd/uml_socket/device.c"
153const char * tap_device::if_up () { return 0; }
154
103#else 155#else
104# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 156# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
105#endif 157#endif
106 158
159#if IF_istun
160# include "ether_emu.C"
161#endif
162
107const char * 163const char *
108tap_device::info () 164tap_device::info ()
109{ 165{
110 return _("tincd compatibility layer"); 166 return _("tincd compatibility layer");
111} 167}
112 168
113tap_device::tap_device () 169tap_device::tap_device ()
114{ 170{
115 self = this; 171 device = "(null)";
116 172
117 if (setup_device ()) 173 bool ok = setup_device ();
174
175 if (device_info)
176 device = device_info;
177
178 if (ok)
118 { 179 {
119 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 180 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
120 fd = device_fd; 181 fd = device_fd;
121 strcpy (ifrname, iface); 182 strcpy (ifrname, iface);
122 } 183 }
123 else 184 else
124 { 185 {
125 slog (L_ERR, _("error while configuring tincd device (%s/%s)"), device, info ()); 186 slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device);
126 exit (1); 187 exit (EXIT_FAILURE);
127 } 188 }
128} 189}
129 190
130tap_device::~tap_device () 191tap_device::~tap_device ()
131{ 192{
… …
138 tap_packet *pkt = new tap_packet; 199 tap_packet *pkt = new tap_packet;
139 200
140 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 201 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
141 { 202 {
142 delete pkt; 203 delete pkt;
143 slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, 204 slog (L_ERR, _("can't read from to %s %s: %s"), info (), device,
144 strerror (errno)); 205 strerror (errno));
145 return 0; 206 return 0;
146 } 207 }
147 208
209#if IF_istun
210 // assume ipv4
211 (*pkt)[12] = 0x08;
212 (*pkt)[13] = 0x00;
213
214 if (!ether_emu.tun_to_tap (pkt))
215 {
216 delete pkt;
217 return 0;
218 }
219#endif
220
148 return pkt; 221 return pkt;
149} 222}
150 223
151void 224void
152tap_device::send (tap_packet *pkt) 225tap_device::send (tap_packet *pkt)
153{ 226{
227 if (
228#if IF_istun
229 ether_emu.tap_to_tun (pkt) &&
230#endif
154 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 231 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
155 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 232 slog (L_ERR, _("can't write to %s %s: %s"), info (), device,
156 strerror (errno)); 233 strerror (errno));
157} 234}
158 235
159 236

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