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 |
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|
71 | { |
69 | u8 data[MAXSIZE]; |
72 | u8 data[MAXSIZE]; |
70 | }; |
73 | }; |
71 | |
74 | |
72 | static bool overwrite_mac; |
75 | static bool overwrite_mac; |
73 | |
76 | |
… | |
… | |
76 | { |
79 | { |
77 | if (!strcmp (key, "Interface")) |
80 | if (!strcmp (key, "Interface")) |
78 | *res = conf.ifname; |
81 | *res = conf.ifname; |
79 | else if (!strcmp (key, "Device")) |
82 | else if (!strcmp (key, "Device")) |
80 | *res = 0; |
83 | *res = 0; |
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84 | else if (!strcmp (key, "DeviceType")) |
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85 | *res = "tap"; |
81 | else |
86 | else |
82 | { |
87 | { |
83 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
88 | slog (L_ERR, _("tincd layer asking for unknown config '%s'"), key); |
84 | *res = 0; |
89 | *res = 0; |
85 | } |
90 | } |
… | |
… | |
89 | |
94 | |
90 | #define netname conf.ifname |
95 | #define netname conf.ifname |
91 | |
96 | |
92 | #if IF_linux |
97 | #if IF_linux |
93 | # include "tincd/linux/device.c" |
98 | # include "tincd/linux/device.c" |
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99 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME hw ether $MAC mtu $MTU"; } |
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100 | |
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101 | #elif IF_bsd |
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102 | # include "tincd/bsd/device.c" |
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103 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
94 | |
104 | |
95 | #elif IF_freebsd |
105 | #elif IF_freebsd |
96 | # include "tincd/freebsd/device.c" |
106 | # include "tincd/freebsd/device.c" |
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107 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
97 | |
108 | |
98 | #elif IF_netbsd |
109 | #elif IF_netbsd |
99 | #define IF_istun 1 |
110 | # define IF_istun 1 |
100 | # include "tincd/netbsd/device.c" |
111 | # include "tincd/netbsd/device.c" |
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112 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
101 | |
113 | |
102 | #elif IF_openbsd |
114 | #elif IF_openbsd |
103 | #define IF_istun 1 |
115 | # define IF_istun 1 |
104 | # include "tincd/openbsd/device.c" |
116 | # include "tincd/openbsd/device.c" |
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117 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME mtu $MTU"; } |
105 | |
118 | |
106 | #elif IF_solaris |
119 | #elif IF_solaris |
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120 | # define IF_istun 1 |
107 | # include "tincd/solaris/device.c" |
121 | # include "tincd/solaris/device.c" |
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122 | const char * tap_device::if_up () { return ""; } |
108 | |
123 | |
109 | #elif IF_cygwin |
124 | #elif IF_cygwin |
110 | # include "tincd/cygwin/device.c" |
125 | # include "tincd/cygwin/device.c" |
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126 | const char * tap_device::if_up () { return ""; } |
111 | |
127 | |
112 | #elif IF_mingw |
128 | #elif IF_mingw |
113 | # include "tincd/mingw/device.c" |
129 | # include "tincd/mingw/device.c" |
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130 | const char * tap_device::if_up () { return ""; } |
114 | |
131 | |
115 | #elif IF_darwin |
132 | #elif IF_darwin |
116 | #define IF_istun 1 |
133 | # define IF_istun 1 |
117 | # include "tincd/darwin/device.c" |
134 | # include "tincd/darwin/device.c" |
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135 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
118 | |
136 | |
119 | #elif IF_raw_socket |
137 | #elif IF_raw_socket |
120 | #define IF_istun 1 |
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121 | # include "tincd/raw_socket/device.c" |
138 | # include "tincd/raw_socket/device.c" |
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139 | const char * tap_device::if_up () { return "/sbin/ifconfig $IFNAME ether $MAC mtu $MTU"; } |
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140 | |
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141 | #elif IF_uml_socket |
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142 | # include "tincd/uml_socket/device.c" |
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143 | const char * tap_device::if_up () { return 0; } |
122 | |
144 | |
123 | #else |
145 | #else |
124 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
146 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
125 | #endif |
147 | #endif |
126 | |
148 | |
… | |
… | |
136 | |
158 | |
137 | tap_device::tap_device () |
159 | tap_device::tap_device () |
138 | { |
160 | { |
139 | device = "(null)"; |
161 | device = "(null)"; |
140 | |
162 | |
141 | if (setup_device ()) |
163 | bool ok = setup_device (); |
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164 | |
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165 | if (device_info) |
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166 | device = device_info; |
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167 | |
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168 | if (ok) |
142 | { |
169 | { |
143 | slog (L_DEBUG, _("interface %s on %s initialized"), info (), device); |
170 | slog (L_DEBUG, _("interface %s on %s initialized"), info (), device); |
144 | fd = device_fd; |
171 | fd = device_fd; |
145 | strcpy (ifrname, iface); |
172 | strcpy (ifrname, iface); |
146 | } |
173 | } |
147 | else |
174 | else |
148 | { |
175 | { |
149 | slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device); |
176 | slog (L_ERR, _("error while configuring tincd device %s on %s"), info (), device); |
150 | exit (1); |
177 | exit (EXIT_FAILURE); |
151 | } |
178 | } |
152 | } |
179 | } |
153 | |
180 | |
154 | tap_device::~tap_device () |
181 | tap_device::~tap_device () |
155 | { |
182 | { |
… | |
… | |
162 | tap_packet *pkt = new tap_packet; |
189 | tap_packet *pkt = new tap_packet; |
163 | |
190 | |
164 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
191 | if (!read_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
165 | { |
192 | { |
166 | delete pkt; |
193 | delete pkt; |
167 | 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, |
168 | strerror (errno)); |
195 | strerror (errno)); |
169 | return 0; |
196 | return 0; |
170 | } |
197 | } |
171 | |
198 | |
172 | #if IF_istun |
199 | #if IF_istun |
… | |
… | |
190 | if ( |
217 | if ( |
191 | #if IF_istun |
218 | #if IF_istun |
192 | ether_emu.tap_to_tun (pkt) && |
219 | ether_emu.tap_to_tun (pkt) && |
193 | #endif |
220 | #endif |
194 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
221 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
195 | 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, |
196 | strerror (errno)); |
223 | strerror (errno)); |
197 | } |
224 | } |
198 | |
225 | |
199 | |
226 | |