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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 1.20 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>
… …
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
71{
53 u8 data[MAXSIZE]; 72 u8 data[MAXSIZE];
54}; 73};
55
56static tap_device *self;
57 74
58static bool overwrite_mac; 75static bool overwrite_mac;
59 76
60static bool 77static bool
61get_config_string(const char *key, char **res) 78get_config_string(const char *key, char **res)
62{ 79{
63 if (!strcmp (key, "Interface")) 80 if (!strcmp (key, "Interface"))
64 *res = conf.ifname; 81 *res = conf.ifname;
65 else if (!strcmp (key, "Device")) 82 else if (!strcmp (key, "Device"))
66 *res = 0; 83 *res = 0;
84 else if (!strcmp (key, "DeviceType"))
85 *res = "tap";
67 else 86 else
68 { 87 {
69 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 88 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
70 *res = 0; 89 *res = 0;
71 } 90 }
… …
75 94
76#define netname conf.ifname 95#define netname conf.ifname
77 96
78#if IF_linux 97#if IF_linux
79# 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
80#elif IF_freebsd 105#elif IF_freebsd
81# 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
82#elif IF_netbsd 109#elif IF_netbsd
110# define IF_istun 1
83# 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
84#elif IF_solaris 119#elif IF_solaris
120# define IF_istun 1
85# include "tincd/solaris/device.c" 121# include "tincd/solaris/device.c"
122const char * tap_device::if_up () { return ""; }
123
86#elif IF_cygwin 124#elif IF_cygwin
87# include "tincd/cygwin/device.c" 125# include "tincd/cygwin/device.c"
126const char * tap_device::if_up () { return ""; }
127
88#elif IF_mingw 128#elif IF_mingw
89# include "tincd/mingw/device.c" 129# include "tincd/mingw/device.c"
130const char * tap_device::if_up () { return ""; }
131
90#elif IF_darwin 132#elif IF_darwin
133# define IF_istun 1
91# 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
92#elif IF_raw_socket 137#elif IF_raw_socket
93# 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
94#else 145#else
95# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 146# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
96#endif 147#endif
97 148
149#if IF_istun
150# include "ether_emu.C"
151#endif
152
98const char * 153const char *
99tap_device::info () 154tap_device::info ()
100{ 155{
101 return _("tincd compatibility layer"); 156 return _("tincd compatibility layer");
102} 157}
103 158
104tap_device::tap_device () 159tap_device::tap_device ()
105{ 160{
106 self = this; 161 device = "(null)";
107 162
108 if (setup_device ()) 163 bool ok = setup_device ();
164
165 if (device_info)
166 device = device_info;
167
168 if (ok)
109 { 169 {
110 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 170 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
111 fd = device_fd; 171 fd = device_fd;
112 strcpy (ifrname, iface); 172 strcpy (ifrname, iface);
113 } 173 }
114 else 174 else
115 { 175 {
116 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);
117 exit (1); 177 exit (EXIT_FAILURE);
118 } 178 }
119} 179}
120 180
121tap_device::~tap_device () 181tap_device::~tap_device ()
122{ 182{
… …
129 tap_packet *pkt = new tap_packet; 189 tap_packet *pkt = new tap_packet;
130 190
131 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 191 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
132 { 192 {
133 delete pkt; 193 delete pkt;
134 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,
135 strerror (errno)); 195 strerror (errno));
136 return 0; 196 return 0;
137 } 197 }
138 198
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
139 return pkt; 211 return pkt;
140} 212}
141 213
142void 214void
143tap_device::send (tap_packet *pkt) 215tap_device::send (tap_packet *pkt)
144{ 216{
217 if (
218#if IF_istun
219 ether_emu.tap_to_tun (pkt) &&
220#endif
145 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 221 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
146 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,
147 strerror (errno)); 223 strerror (errno));
148} 224}
149 225
150 226

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