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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 1.16 by pcg, Fri Mar 25 13:56:25 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{
… …
75 91
76#define netname conf.ifname 92#define netname conf.ifname
77 93
78#if IF_linux 94#if IF_linux
79# include "tincd/linux/device.c" 95# include "tincd/linux/device.c"
96const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU up"; }
97
80#elif IF_freebsd 98#elif IF_freebsd
81# include "tincd/freebsd/device.c" 99# include "tincd/freebsd/device.c"
100// 5.2.1' ifconfig _first_ sets the if up then changes mtu, which can be deadly due to ipv6 kicking in
101const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU && /sbin/ifconfig $IFNAME up"; }
102
82#elif IF_netbsd 103#elif IF_netbsd
104# define IF_istun 1
83# include "tincd/netbsd/device.c" 105# include "tincd/netbsd/device.c"
106const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU up"; }
107
108#elif IF_openbsd
109# define IF_istun 1
110# include "tincd/openbsd/device.c"
111const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU up"; }
112
84#elif IF_solaris 113#elif IF_solaris
114# define IF_istun 1
85# include "tincd/solaris/device.c" 115# include "tincd/solaris/device.c"
116const char * tap_device::if_up () { return ""; }
117
86#elif IF_cygwin 118#elif IF_cygwin
87# include "tincd/cygwin/device.c" 119# include "tincd/cygwin/device.c"
120const char * tap_device::if_up () { return ""; }
121
88#elif IF_mingw 122#elif IF_mingw
89# include "tincd/mingw/device.c" 123# include "tincd/mingw/device.c"
124const char * tap_device::if_up () { return ""; }
125
90#elif IF_darwin 126#elif IF_darwin
127# define IF_istun 1
91# include "tincd/darwin/device.c" 128# include "tincd/darwin/device.c"
129const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU up"; }
130
92#elif IF_raw_socket 131#elif IF_raw_socket
93# include "tincd/raw_socket/device.c" 132# include "tincd/raw_socket/device.c"
133const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU up"; }
134
135#elif IF_uml_socket
136# include "tincd/uml_socket/device.c"
137const char * tap_device::if_up () { return 0; }
138
94#else 139#else
95# error No interface implementation for your IFTYPE/IFSUBTYPE combination. 140# error No interface implementation for your IFTYPE/IFSUBTYPE combination.
96#endif 141#endif
97 142
143#if IF_istun
144# include "ether_emu.C"
145#endif
146
98const char * 147const char *
99tap_device::info () 148tap_device::info ()
100{ 149{
101 return _("tincd compatibility layer"); 150 return _("tincd compatibility layer");
102} 151}
103 152
104tap_device::tap_device () 153tap_device::tap_device ()
105{ 154{
106 self = this; 155 device = "(null)";
107 156
108 if (setup_device ()) 157 bool ok = setup_device ();
158
159 if (device_info)
160 device = device_info;
161
162 if (ok)
109 { 163 {
110 //slog (L_DEBUG, _("%s is a %s"), device, info ()); 164 slog (L_DEBUG, _("interface %s on %s initialized"), info (), device);
111 fd = device_fd; 165 fd = device_fd;
112 strcpy (ifrname, iface); 166 strcpy (ifrname, iface);
113 } 167 }
114 else 168 else
115 { 169 {
116 slog (L_ERR, _("error while configuring tincd device (%s/%s)"), device, info ()); 170 slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device);
117 exit (1); 171 exit (EXIT_FAILURE);
118 } 172 }
119} 173}
120 174
121tap_device::~tap_device () 175tap_device::~tap_device ()
122{ 176{
… …
129 tap_packet *pkt = new tap_packet; 183 tap_packet *pkt = new tap_packet;
130 184
131 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 185 if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
132 { 186 {
133 delete pkt; 187 delete pkt;
134 slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, 188 slog (L_ERR, _("can't read from to %s %s: %s"), info (), device,
135 strerror (errno)); 189 strerror (errno));
136 return 0; 190 return 0;
137 } 191 }
138 192
193#if IF_istun
194 // assume ipv4
195 (*pkt)[12] = 0x08;
196 (*pkt)[13] = 0x00;
197
198 if (!ether_emu.tun_to_tap (pkt))
199 {
200 delete pkt;
201 return 0;
202 }
203#endif
204
139 return pkt; 205 return pkt;
140} 206}
141 207
142void 208void
143tap_device::send (tap_packet *pkt) 209tap_device::send (tap_packet *pkt)
144{ 210{
211 if (
212#if IF_istun
213 ether_emu.tap_to_tun (pkt) &&
214#endif
145 if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) 215 !write_packet (reinterpret_cast<vpn_packet_t *>(pkt)))
146 slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, 216 slog (L_ERR, _("can't write to %s %s: %s"), info (), device,
147 strerror (errno)); 217 strerror (errno));
148} 218}
149 219
150 220

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