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 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2005 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 |
6 | 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 |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
8 | (at your option) any later version. |
10 | (at your 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, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but 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 |
13 | GNU General Public License for more details. |
15 | GNU General 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 |
16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
17 | 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 |
18 | */ |
20 | */ |
19 | |
21 | |
20 | #include <cstdio> |
22 | #include <cstdio> |
21 | #include <cstring> |
23 | #include <cstring> |
22 | #include <cerrno> |
24 | #include <cerrno> |
… | |
… | |
59 | #define ifdebug(subsys) if (0) |
61 | #define ifdebug(subsys) if (0) |
60 | |
62 | |
61 | #define cp() |
63 | #define cp() |
62 | #define lookup_config(config_tree,key) (key) |
64 | #define lookup_config(config_tree,key) (key) |
63 | |
65 | |
64 | #define MTU MAXSIZE |
66 | #define MTU MAX_MTU |
65 | |
67 | |
66 | // BIGGEST hack of 'em all |
68 | // BIGGEST hack of 'em all |
67 | // will be casted to data_packet, due to structural similarity |
69 | // will be casted to data_packet, due to structural similarity |
68 | struct vpn_packet_t : net_packet { |
70 | struct vpn_packet_t : net_packet { |
69 | u8 data[MAXSIZE]; |
71 | u8 data[MAXSIZE]; |
70 | }; |
72 | }; |
71 | |
73 | |
72 | static tap_device *self; |
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73 | |
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74 | static bool overwrite_mac; |
74 | static bool overwrite_mac; |
75 | |
75 | |
76 | static bool |
76 | static bool |
77 | get_config_string(const char *key, char **res) |
77 | get_config_string(const char *key, char **res) |
78 | { |
78 | { |
79 | if (!strcmp (key, "Interface")) |
79 | if (!strcmp (key, "Interface")) |
80 | *res = conf.ifname; |
80 | *res = conf.ifname; |
81 | else if (!strcmp (key, "Device")) |
81 | else if (!strcmp (key, "Device")) |
82 | *res = 0; |
82 | *res = 0; |
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83 | else if (!strcmp (key, "DeviceType")) |
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84 | *res = "tap"; |
83 | else |
85 | else |
84 | { |
86 | { |
85 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
87 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
86 | *res = 0; |
88 | *res = 0; |
87 | } |
89 | } |
… | |
… | |
91 | |
93 | |
92 | #define netname conf.ifname |
94 | #define netname conf.ifname |
93 | |
95 | |
94 | #if IF_linux |
96 | #if IF_linux |
95 | # include "tincd/linux/device.c" |
97 | # include "tincd/linux/device.c" |
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98 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; } |
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99 | |
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100 | #elif IF_bsd |
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101 | # include "tincd/bsd/device.c" |
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102 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
96 | |
103 | |
97 | #elif IF_freebsd |
104 | #elif IF_freebsd |
98 | # include "tincd/freebsd/device.c" |
105 | # include "tincd/freebsd/device.c" |
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106 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
99 | |
107 | |
100 | #elif IF_netbsd |
108 | #elif IF_netbsd |
101 | #define IF_istun 1 |
109 | # define IF_istun 1 |
102 | # include "tincd/netbsd/device.c" |
110 | # include "tincd/netbsd/device.c" |
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111 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
103 | |
112 | |
104 | #elif IF_openbsd |
113 | #elif IF_openbsd |
105 | #define IF_istun 1 |
114 | # define IF_istun 1 |
106 | # include "tincd/openbsd/device.c" |
115 | # include "tincd/openbsd/device.c" |
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116 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
107 | |
117 | |
108 | #elif IF_solaris |
118 | #elif IF_solaris |
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119 | # define IF_istun 1 |
109 | # include "tincd/solaris/device.c" |
120 | # include "tincd/solaris/device.c" |
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121 | const char * tap_device::if_up () { return ""; } |
110 | |
122 | |
111 | #elif IF_cygwin |
123 | #elif IF_cygwin |
112 | # include "tincd/cygwin/device.c" |
124 | # include "tincd/cygwin/device.c" |
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125 | const char * tap_device::if_up () { return ""; } |
113 | |
126 | |
114 | #elif IF_mingw |
127 | #elif IF_mingw |
115 | # include "tincd/mingw/device.c" |
128 | # include "tincd/mingw/device.c" |
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129 | const char * tap_device::if_up () { return ""; } |
116 | |
130 | |
117 | #elif IF_darwin |
131 | #elif IF_darwin |
118 | #define IF_istun 1 |
132 | # define IF_istun 1 |
119 | # include "tincd/darwin/device.c" |
133 | # include "tincd/darwin/device.c" |
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134 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
120 | |
135 | |
121 | #elif IF_raw_socket |
136 | #elif IF_raw_socket |
122 | #define IF_istun 1 |
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123 | # include "tincd/raw_socket/device.c" |
137 | # include "tincd/raw_socket/device.c" |
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138 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
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139 | |
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140 | #elif IF_uml_socket |
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141 | # include "tincd/uml_socket/device.c" |
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142 | const char * tap_device::if_up () { return 0; } |
124 | |
143 | |
125 | #else |
144 | #else |
126 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
145 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
127 | #endif |
146 | #endif |
128 | |
147 | |
… | |
… | |
136 | return _("tincd compatibility layer"); |
155 | return _("tincd compatibility layer"); |
137 | } |
156 | } |
138 | |
157 | |
139 | tap_device::tap_device () |
158 | tap_device::tap_device () |
140 | { |
159 | { |
141 | self = this; |
160 | device = "(null)"; |
142 | |
161 | |
143 | if (setup_device ()) |
162 | bool ok = setup_device (); |
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163 | |
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164 | if (device_info) |
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165 | device = device_info; |
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166 | |
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167 | if (ok) |
144 | { |
168 | { |
145 | //slog (L_DEBUG, _("%s is a %s"), device, info ()); |
169 | slog (L_DEBUG, _("interface %s on %s initialized"), info (), device); |
146 | fd = device_fd; |
170 | fd = device_fd; |
147 | strcpy (ifrname, iface); |
171 | strcpy (ifrname, iface); |
148 | } |
172 | } |
149 | else |
173 | else |
150 | { |
174 | { |
151 | 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); |
152 | exit (1); |
176 | exit (EXIT_FAILURE); |
153 | } |
177 | } |
154 | } |
178 | } |
155 | |
179 | |
156 | tap_device::~tap_device () |
180 | tap_device::~tap_device () |
157 | { |
181 | { |
… | |
… | |
164 | tap_packet *pkt = new tap_packet; |
188 | tap_packet *pkt = new tap_packet; |
165 | |
189 | |
166 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
190 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
167 | { |
191 | { |
168 | delete pkt; |
192 | delete pkt; |
169 | 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, |
170 | strerror (errno)); |
194 | strerror (errno)); |
171 | return 0; |
195 | return 0; |
172 | } |
196 | } |
173 | |
197 | |
174 | #if IF_istun |
198 | #if IF_istun |
… | |
… | |
192 | if ( |
216 | if ( |
193 | #if IF_istun |
217 | #if IF_istun |
194 | ether_emu.tap_to_tun (pkt) && |
218 | ether_emu.tap_to_tun (pkt) && |
195 | #endif |
219 | #endif |
196 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
220 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
197 | 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, |
198 | strerror (errno)); |
222 | strerror (errno)); |
199 | } |
223 | } |
200 | |
224 | |
201 | |
225 | |