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) 2003-2004 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
5 | 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 |
6 | 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 |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
8 | (at your option) any later version. |
10 | option) any later version. |
9 | |
11 | |
10 | 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 |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
13 | GNU General Public License for more details. |
15 | Public License for more details. |
14 | |
16 | |
15 | 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 |
16 | along with this program; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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29 | covered work. |
18 | */ |
30 | */ |
19 | |
31 | |
20 | #include <cstdio> |
32 | #include <cstdio> |
21 | #include <cstring> |
33 | #include <cstring> |
22 | #include <cerrno> |
34 | #include <cerrno> |
… | |
… | |
59 | #define ifdebug(subsys) if (0) |
71 | #define ifdebug(subsys) if (0) |
60 | |
72 | |
61 | #define cp() |
73 | #define cp() |
62 | #define lookup_config(config_tree,key) (key) |
74 | #define lookup_config(config_tree,key) (key) |
63 | |
75 | |
64 | #define MTU MAXSIZE |
76 | #define MTU MAX_MTU |
65 | |
77 | |
66 | // BIGGEST hack of 'em all |
78 | // BIGGEST hack of 'em all |
67 | // will be casted to data_packet, due to structural similarity |
79 | // will be casted to data_packet, due to structural similarity |
68 | struct vpn_packet_t : net_packet { |
80 | struct vpn_packet_t : net_packet |
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81 | { |
69 | u8 data[MAXSIZE]; |
82 | u8 data[MAXSIZE]; |
70 | }; |
83 | }; |
71 | |
84 | |
72 | static bool overwrite_mac; |
85 | static bool overwrite_mac; |
73 | |
86 | |
… | |
… | |
76 | { |
89 | { |
77 | if (!strcmp (key, "Interface")) |
90 | if (!strcmp (key, "Interface")) |
78 | *res = conf.ifname; |
91 | *res = conf.ifname; |
79 | else if (!strcmp (key, "Device")) |
92 | else if (!strcmp (key, "Device")) |
80 | *res = 0; |
93 | *res = 0; |
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94 | else if (!strcmp (key, "DeviceType")) |
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95 | *res = "tap"; |
81 | else |
96 | else |
82 | { |
97 | { |
83 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
98 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
84 | *res = 0; |
99 | *res = 0; |
85 | } |
100 | } |
… | |
… | |
89 | |
104 | |
90 | #define netname conf.ifname |
105 | #define netname conf.ifname |
91 | |
106 | |
92 | #if IF_linux |
107 | #if IF_linux |
93 | # include "tincd/linux/device.c" |
108 | # include "tincd/linux/device.c" |
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109 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; } |
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110 | |
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111 | #elif IF_bsd |
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112 | # include "tincd/bsd/device.c" |
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113 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
94 | |
114 | |
95 | #elif IF_freebsd |
115 | #elif IF_freebsd |
96 | # include "tincd/freebsd/device.c" |
116 | # include "tincd/freebsd/device.c" |
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117 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
97 | |
118 | |
98 | #elif IF_netbsd |
119 | #elif IF_netbsd |
99 | # define IF_istun 1 |
120 | # define IF_istun 1 |
100 | # include "tincd/netbsd/device.c" |
121 | # include "tincd/netbsd/device.c" |
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122 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
101 | |
123 | |
102 | #elif IF_openbsd |
124 | #elif IF_openbsd |
103 | # define IF_istun 1 |
125 | # define IF_istun 1 |
104 | # include "tincd/openbsd/device.c" |
126 | # include "tincd/openbsd/device.c" |
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127 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
105 | |
128 | |
106 | #elif IF_solaris |
129 | #elif IF_solaris |
107 | # define IF_istun 1 |
130 | # define IF_istun 1 |
108 | # include "tincd/solaris/device.c" |
131 | # include "tincd/solaris/device.c" |
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132 | const char * tap_device::if_up () { return ""; } |
109 | |
133 | |
110 | #elif IF_cygwin |
134 | #elif IF_cygwin |
111 | # include "tincd/cygwin/device.c" |
135 | # include "tincd/cygwin/device.c" |
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136 | const char * tap_device::if_up () { return ""; } |
112 | |
137 | |
113 | #elif IF_mingw |
138 | #elif IF_mingw |
114 | # include "tincd/mingw/device.c" |
139 | # include "tincd/mingw/device.c" |
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140 | const char * tap_device::if_up () { return ""; } |
115 | |
141 | |
116 | #elif IF_darwin |
142 | #elif IF_darwin |
117 | # define IF_istun 1 |
143 | # define IF_istun 1 |
118 | # include "tincd/darwin/device.c" |
144 | # include "tincd/darwin/device.c" |
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145 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
119 | |
146 | |
120 | #elif IF_raw_socket |
147 | #elif IF_raw_socket |
121 | # define IF_istun 1 |
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122 | # include "tincd/raw_socket/device.c" |
148 | # include "tincd/raw_socket/device.c" |
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149 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
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150 | |
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151 | #elif IF_uml_socket |
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152 | # include "tincd/uml_socket/device.c" |
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153 | const char * tap_device::if_up () { return 0; } |
123 | |
154 | |
124 | #else |
155 | #else |
125 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
156 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
126 | #endif |
157 | #endif |
127 | |
158 | |
… | |
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137 | |
168 | |
138 | tap_device::tap_device () |
169 | tap_device::tap_device () |
139 | { |
170 | { |
140 | device = "(null)"; |
171 | device = "(null)"; |
141 | |
172 | |
142 | if (setup_device ()) |
173 | bool ok = setup_device (); |
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174 | |
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175 | if (device_info) |
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176 | device = device_info; |
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177 | |
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178 | if (ok) |
143 | { |
179 | { |
144 | slog (L_DEBUG, _("interface %s on %s initialized"), info (), device); |
180 | slog (L_DEBUG, _("interface %s on %s initialized"), info (), device); |
145 | fd = device_fd; |
181 | fd = device_fd; |
146 | strcpy (ifrname, iface); |
182 | strcpy (ifrname, iface); |
147 | } |
183 | } |
… | |
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163 | tap_packet *pkt = new tap_packet; |
199 | tap_packet *pkt = new tap_packet; |
164 | |
200 | |
165 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
201 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
166 | { |
202 | { |
167 | delete pkt; |
203 | delete pkt; |
168 | 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, |
169 | strerror (errno)); |
205 | strerror (errno)); |
170 | return 0; |
206 | return 0; |
171 | } |
207 | } |
172 | |
208 | |
173 | #if IF_istun |
209 | #if IF_istun |
… | |
… | |
191 | if ( |
227 | if ( |
192 | #if IF_istun |
228 | #if IF_istun |
193 | ether_emu.tap_to_tun (pkt) && |
229 | ether_emu.tap_to_tun (pkt) && |
194 | #endif |
230 | #endif |
195 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
231 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
196 | 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, |
197 | strerror (errno)); |
233 | strerror (errno)); |
198 | } |
234 | } |
199 | |
235 | |
200 | |
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