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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 1.21 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
51/* make the tincd sources feel comfortable in our environment. */
52/* this was reasonably easy to do. */
32#define routing_mode 1 53#define routing_mode 1
33#define RMODE_ROUTER 0 54#define RMODE_ROUTER 0
34 55
35/* need iso c-90 or ugly workaround :( */ 56#define LOG_TO_L(level) \
36#define logger(level, ...) slog ( \
37 (level) == LOG_ERR ? L_ERR \ 57 (level) == LOG_ERR ? L_ERR \
38 : (level) == LOG_DEBUG ? L_DEBUG \ 58 : (level) == LOG_DEBUG ? L_DEBUG \
39 : (level) == LOG_WARNING ? L_WARN \ 59 : (level) == LOG_WARNING ? L_WARN \
40 : (level) == LOG_INFO ? L_INFO \ 60 : (level) == LOG_INFO ? L_INFO \
41 : L_NOTICE, __VA_ARGS__) 61 : L_NOTICE
62
63#if __STDC_VERSION__ > 199900
64# define logger(level, ...) slog (LOG_TO_L(level), __VA_ARGS__)
65#elif __GNUC__
66# define logger(level, args...) slog (LOG_TO_L(level), ## args)
67#else
68# error either need ISO-C 99 compliant compiler or gcc.
69#endif
42 70
43#define ifdebug(subsys) if (0) 71#define ifdebug(subsys) if (0)
44 72
45#define cp() 73#define cp()
46#define lookup_config(config_tree,key) (key) 74#define lookup_config(config_tree,key) (key)
47 75
48#define MTU MAXSIZE 76#define MTU MAX_MTU
49 77
50// BIGGEST hack of 'em all 78// BIGGEST hack of 'em all
51// will be casted to data_packet, due to structural similarity 79// will be casted to data_packet, due to structural similarity
52struct vpn_packet_t : net_packet { 80struct vpn_packet_t : net_packet
81{
53 u8 data[MAXSIZE]; 82 u8 data[MAXSIZE];
54}; 83};
55
56static tap_device *self;
57 84
58static bool overwrite_mac; 85static bool overwrite_mac;
59 86
60static bool 87static bool
61get_config_string(const char *key, char **res) 88get_config_string(const char *key, char **res)
62{ 89{
63 if (!strcmp (key, "Interface")) 90 if (!strcmp (key, "Interface"))
64 *res = conf.ifname; 91 *res = conf.ifname;
65 else if (!strcmp (key, "Device")) 92 else if (!strcmp (key, "Device"))
66 *res = 0; 93 *res = 0;
94 else if (!strcmp (key, "DeviceType"))
95 *res = "tap";
67 else 96 else
68 { 97 {
69 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 98 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
70 *res = 0; 99 *res = 0;
71 } 100 }
… …
75 104
76#define netname conf.ifname 105#define netname conf.ifname
77 106
78#if IF_linux 107#if IF_linux
79# 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
80#elif IF_freebsd 115#elif IF_freebsd
81# 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
82#elif IF_netbsd 119#elif IF_netbsd
120# define IF_istun 1
83# 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
84#elif IF_solaris 129#elif IF_solaris
130# define IF_istun 1
85# include "tincd/solaris/device.c" 131# include "tincd/solaris/device.c"
132const char * tap_device::if_up () { return ""; }
133
86#elif IF_cygwin 134#elif IF_cygwin
87# include "tincd/cygwin/device.c" 135# include "tincd/cygwin/device.c"
136const char * tap_device::if_up () { return ""; }
137
88#elif IF_mingw 138#elif IF_mingw
89# include "tincd/mingw/device.c" 139# include "tincd/mingw/device.c"
140const char * tap_device::if_up () { return ""; }
141
90#elif IF_darwin 142#elif IF_darwin
143# define IF_istun 1
91# 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
92#elif IF_raw_socket 147#elif IF_raw_socket
93# 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
94#else 155#else
95# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 156# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
96#endif 157#endif
97 158
159#if IF_istun
160# include "ether_emu.C"
161#endif
162
98const char * 163const char *
99tap_device::info () 164tap_device::info ()
100{ 165{
101 return _("tincd compatibility layer"); 166 return _("tincd compatibility layer");
102} 167}
103 168
104tap_device::tap_device () 169tap_device::tap_device ()
105{ 170{
106 self = this; 171 device = "(null)";
107 172
108 if (setup_device ()) 173 bool ok = setup_device ();
174
175 if (device_info)
176 device = device_info;
177
178 if (ok)
109 { 179 {
110 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 180 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
111 fd = device_fd; 181 fd = device_fd;
112 strcpy (ifrname, iface); 182 strcpy (ifrname, iface);
113 } 183 }
114 else 184 else
115 { 185 {
116 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);
117 exit (1); 187 exit (EXIT_FAILURE);
118 } 188 }
119} 189}
120 190
121tap_device::~tap_device () 191tap_device::~tap_device ()
122{ 192{
… …
129 tap_packet *pkt = new tap_packet; 199 tap_packet *pkt = new tap_packet;
130 200
131 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 201 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
132 { 202 {
133 delete pkt; 203 delete pkt;
134 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,
135 strerror (errno)); 205 strerror (errno));
136 return 0; 206 return 0;
137 } 207 }
138 208
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
139 return pkt; 221 return pkt;
140} 222}
141 223
142void 224void
143tap_device::send (tap_packet *pkt) 225tap_device::send (tap_packet *pkt)
144{ 226{
227 if (
228#if IF_istun
229 ether_emu.tap_to_tun (pkt) &&
230#endif
145 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 231 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
146 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,
147 strerror (errno)); 233 strerror (errno));
148} 234}
149 235
150 236

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