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. |
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3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
3 | |
4 | |
4 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
5 | it under the terms of the GNU General Public License as published by |
6 | 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 |
7 | the Free Software Foundation; either version 2 of the License, or |
7 | (at your option) any later version. |
8 | (at your option) any later version. |
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27 | #include <syslog.h> |
28 | #include <syslog.h> |
28 | #include <fcntl.h> |
29 | #include <fcntl.h> |
29 | |
30 | |
30 | #include "conf.h" |
31 | #include "conf.h" |
31 | |
32 | |
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33 | // following headers used by cygwin (maybe others) |
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34 | #include "netcompat.h" |
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35 | #include <signal.h> |
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36 | |
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37 | #define xstrdup(strd) strdup(str) |
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38 | |
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39 | /* make the tincd sources feel comfortable in our environment. */ |
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40 | /* this was reasonably easy to do. */ |
32 | #define routing_mode 1 |
41 | #define routing_mode 1 |
33 | #define RMODE_ROUTER 0 |
42 | #define RMODE_ROUTER 0 |
34 | |
43 | |
35 | /* need iso c-90 or ugly workaround :( */ |
44 | #define LOG_TO_L(level) \ |
36 | #define logger(level, ...) slog ( \ |
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37 | (level) == LOG_ERR ? L_ERR \ |
45 | (level) == LOG_ERR ? L_ERR \ |
38 | : (level) == LOG_DEBUG ? L_DEBUG \ |
46 | : (level) == LOG_DEBUG ? L_DEBUG \ |
39 | : (level) == LOG_WARNING ? L_WARN \ |
47 | : (level) == LOG_WARNING ? L_WARN \ |
40 | : (level) == LOG_INFO ? L_INFO \ |
48 | : (level) == LOG_INFO ? L_INFO \ |
41 | : L_NOTICE, __VA_ARGS__) |
49 | : L_NOTICE |
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50 | |
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51 | #if __STDC_VERSION__ > 199900 |
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52 | # define logger(level, ...) slog (LOG_TO_L(level), __VA_ARGS__) |
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53 | #elif __GNUC__ |
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54 | # define logger(level, args...) slog (LOG_TO_L(level), ## args) |
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55 | #else |
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56 | # error either need ISO-C 99 compliant compiler or gcc. |
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57 | #endif |
42 | |
58 | |
43 | #define ifdebug(subsys) if (0) |
59 | #define ifdebug(subsys) if (0) |
44 | |
60 | |
45 | #define cp() |
61 | #define cp() |
46 | #define lookup_config(config_tree,key) (key) |
62 | #define lookup_config(config_tree,key) (key) |
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78 | #if IF_linux |
94 | #if IF_linux |
79 | # include "tincd/linux/device.c" |
95 | # include "tincd/linux/device.c" |
80 | #elif IF_freebsd |
96 | #elif IF_freebsd |
81 | # include "tincd/freebsd/device.c" |
97 | # include "tincd/freebsd/device.c" |
82 | #elif IF_netbsd |
98 | #elif IF_netbsd |
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99 | #define IF_istun 1 |
83 | # include "tincd/netbsd/device.c" |
100 | # include "tincd/netbsd/device.c" |
84 | #elif IF_solaris |
101 | #elif IF_solaris |
85 | # include "tincd/solaris/device.c" |
102 | # include "tincd/solaris/device.c" |
86 | #elif IF_cygwin |
103 | #elif IF_cygwin |
87 | # include "tincd/cygwin/device.c" |
104 | # include "tincd/cygwin/device.c" |
88 | #elif IF_mingw |
105 | #elif IF_mingw |
89 | # include "tincd/mingw/device.c" |
106 | # include "tincd/mingw/device.c" |
90 | #elif IF_darwin |
107 | #elif IF_darwin |
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108 | #define IF_istun 1 |
91 | # include "tincd/darwin/device.c" |
109 | # include "tincd/darwin/device.c" |
92 | #elif IF_raw_socket |
110 | #elif IF_raw_socket |
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111 | #define IF_istun 1 |
93 | # include "tincd/raw_socket/device.c" |
112 | # include "tincd/raw_socket/device.c" |
94 | #else |
113 | #else |
95 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
114 | # error No interface implementation for your IFTYPE/IFSUBTYPE combination. |
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115 | #endif |
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116 | |
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117 | #if IF_istun |
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118 | # include "ether_emu.C" |
96 | #endif |
119 | #endif |
97 | |
120 | |
98 | const char * |
121 | const char * |
99 | tap_device::info () |
122 | tap_device::info () |
100 | { |
123 | { |
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134 | slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, |
157 | slog (L_ERR, _("can't read from to %s %s: %s"), info (), DEFAULT_DEVICE, |
135 | strerror (errno)); |
158 | strerror (errno)); |
136 | return 0; |
159 | return 0; |
137 | } |
160 | } |
138 | |
161 | |
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162 | #if IF_istun |
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163 | // assume ipv4 |
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164 | (*pkt)[12] = 0x08; |
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165 | (*pkt)[13] = 0x00; |
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166 | |
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167 | if (!ether_emu.tun_to_tap (pkt)) |
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168 | { |
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169 | delete pkt; |
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170 | return 0; |
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171 | } |
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172 | #endif |
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173 | |
139 | return pkt; |
174 | return pkt; |
140 | } |
175 | } |
141 | |
176 | |
142 | void |
177 | void |
143 | tap_device::send (tap_packet *pkt) |
178 | tap_device::send (tap_packet *pkt) |
144 | { |
179 | { |
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180 | if ( |
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181 | #if IF_istun |
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182 | ether_emu.tap_to_tun (pkt) && |
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183 | #endif |
145 | if (!write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
184 | !write_packet (reinterpret_cast<vpn_packet_t *>(pkt))) |
146 | slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, |
185 | slog (L_ERR, _("can't write to %s %s: %s"), info (), DEFAULT_DEVICE, |
147 | strerror (errno)); |
186 | strerror (errno)); |
148 | } |
187 | } |
149 | |
188 | |
150 | |
189 | |