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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 1.18 by pcg, Fri Mar 25 16:05:22 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) 2003-2005 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. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17*/ 20*/
18 21
19#include <cstdio> 22#include <cstdio>
20#include <cstring> 23#include <cstring>
… …
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 {
53 u8 data[MAXSIZE]; 71 u8 data[MAXSIZE];
54}; 72};
55 73
56static tap_device *self;
57
58static bool overwrite_mac; 74static bool overwrite_mac;
59 75
60static bool 76static bool
61get_config_string(const char *key, char **res) 77get_config_string(const char *key, char **res)
62{ 78{
63 if (!strcmp (key, "Interface")) 79 if (!strcmp (key, "Interface"))
64 *res = conf.ifname; 80 *res = conf.ifname;
65 else if (!strcmp (key, "Device")) 81 else if (!strcmp (key, "Device"))
66 *res = 0; 82 *res = 0;
83 else if (!strcmp (key, "DeviceType"))
84 *res = "tap";
67 else 85 else
68 { 86 {
69 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); 87 slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key);
70 *res = 0; 88 *res = 0;
71 } 89 }
… …
75 93
76#define netname conf.ifname 94#define netname conf.ifname
77 95
78#if IF_linux 96#if IF_linux
79# 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
80#elif IF_freebsd 104#elif IF_freebsd
81# 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
82#elif IF_netbsd 108#elif IF_netbsd
109# define IF_istun 1
83# 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
84#elif IF_solaris 118#elif IF_solaris
119# define IF_istun 1
85# include "tincd/solaris/device.c" 120# include "tincd/solaris/device.c"
121const char * tap_device::if_up () { return ""; }
122
86#elif IF_cygwin 123#elif IF_cygwin
87# include "tincd/cygwin/device.c" 124# include "tincd/cygwin/device.c"
125const char * tap_device::if_up () { return ""; }
126
88#elif IF_mingw 127#elif IF_mingw
89# include "tincd/mingw/device.c" 128# include "tincd/mingw/device.c"
129const char * tap_device::if_up () { return ""; }
130
90#elif IF_darwin 131#elif IF_darwin
132# define IF_istun 1
91# 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
92#elif IF_raw_socket 136#elif IF_raw_socket
93# 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
94#else 144#else
95# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 145# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
96#endif 146#endif
97 147
148#if IF_istun
149# include "ether_emu.C"
150#endif
151
98const char * 152const char *
99tap_device::info () 153tap_device::info ()
100{ 154{
101 return _("tincd compatibility layer"); 155 return _("tincd compatibility layer");
102} 156}
103 157
104tap_device::tap_device () 158tap_device::tap_device ()
105{ 159{
106 self = this; 160 device = "(null)";
107 161
108 if (setup_device ()) 162 bool ok = setup_device ();
163
164 if (device_info)
165 device = device_info;
166
167 if (ok)
109 { 168 {
110 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 169 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
111 fd = device_fd; 170 fd = device_fd;
112 strcpy (ifrname, iface); 171 strcpy (ifrname, iface);
113 } 172 }
114 else 173 else
115 { 174 {
116 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);
117 exit (1); 176 exit (EXIT_FAILURE);
118 } 177 }
119} 178}
120 179
121tap_device::~tap_device () 180tap_device::~tap_device ()
122{ 181{
… …
129 tap_packet *pkt = new tap_packet; 188 tap_packet *pkt = new tap_packet;
130 189
131 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 190 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
132 { 191 {
133 delete pkt; 192 delete pkt;
134 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,
135 strerror (errno)); 194 strerror (errno));
136 return 0; 195 return 0;
137 } 196 }
138 197
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
139 return pkt; 210 return pkt;
140} 211}
141 212
142void 213void
143tap_device::send (tap_packet *pkt) 214tap_device::send (tap_packet *pkt)
144{ 215{
216 if (
217#if IF_istun
218 ether_emu.tap_to_tun (pkt) &&
219#endif
145 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 220 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
146 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,
147 strerror (errno)); 222 strerror (errno));
148} 223}
149 224
150 225

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