| 1 | /* |
1 | /* |
| 2 | util.C -- process management and other utility functions |
2 | util.C -- process management and other utility functions |
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3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
| 3 | |
4 | |
| 4 | Most of these are taken from tinc, see the AUTHORS file. |
5 | Some of these are taken from tinc, see the AUTHORS file. |
| 5 | |
6 | |
| 6 | This program is free software; you can redistribute it and/or modify |
7 | This program is free software; you can redistribute it and/or modify |
| 7 | 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 |
| 8 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
10 | (at your option) any later version. |
| … | |
… | |
| 19 | */ |
20 | */ |
| 20 | |
21 | |
| 21 | #include "config.h" |
22 | #include "config.h" |
| 22 | |
23 | |
| 23 | #include <cstdio> |
24 | #include <cstdio> |
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25 | #include <cstdlib> |
| 24 | #include <cstring> |
26 | #include <cstring> |
| 25 | |
27 | |
| 26 | #include <errno.h> |
28 | #include <errno.h> |
| 27 | #include <signal.h> |
29 | #include <signal.h> |
| 28 | #include <sys/types.h> |
30 | #include <sys/types.h> |
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31 | #include <sys/wait.h> |
| 29 | #include <unistd.h> |
32 | #include <unistd.h> |
| 30 | #include <time.h> |
33 | #include <time.h> |
| 31 | #include <sys/socket.h> |
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| 32 | #include <netinet/in.h> |
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| 33 | #include <arpa/inet.h> |
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| 34 | |
34 | |
| 35 | #include <sys/mman.h> |
35 | #include "netcompat.h" |
| 36 | |
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| 37 | #include <openssl/rand.h> |
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| 38 | #include <openssl/rsa.h> |
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| 39 | #include <openssl/pem.h> |
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| 40 | #include <openssl/evp.h> |
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| 41 | |
36 | |
| 42 | #include "gettext.h" |
37 | #include "gettext.h" |
| 43 | #include "pidfile.h" |
38 | #include "pidfile.h" |
| 44 | #include "dropin.h" |
39 | #include "dropin.h" |
| 45 | |
40 | |
| 46 | #include "global.h" |
41 | #include "global.h" |
| 47 | #include "conf.h" |
42 | #include "conf.h" |
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43 | #include "util.h" |
| 48 | #include "slog.h" |
44 | #include "slog.h" |
| 49 | #include "protocol.h" |
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| 50 | |
45 | |
| 51 | int |
46 | int |
| 52 | write_pidfile (void) |
47 | write_pidfile (void) |
| 53 | { |
48 | { |
| 54 | int pid; |
49 | int pid; |
| … | |
… | |
| 140 | |
135 | |
| 141 | if (!confbase) |
136 | if (!confbase) |
| 142 | asprintf (&confbase, "%s/vpe", CONFDIR); |
137 | asprintf (&confbase, "%s/vpe", CONFDIR); |
| 143 | } |
138 | } |
| 144 | |
139 | |
| 145 | sockinfo::operator const char *() |
140 | void run_script (const run_script_cb &cb, bool wait) |
| 146 | { |
141 | { |
| 147 | static char hostport[15 + 1 + 5 + 1]; |
142 | int pid; |
| 148 | in_addr ia = { host }; |
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| 149 | |
143 | |
| 150 | sprintf (hostport, "%.15s:%d", inet_ntoa (ia), ntohs (port) & 0xffff); |
144 | if ((pid = fork ()) == 0) |
| 151 | |
145 | { |
| 152 | return hostport; |
146 | char *filename; |
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147 | asprintf (&filename, "%s/%s", confbase, cb()); |
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148 | execl (filename, filename, (char *) 0); |
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149 | exit (126); |
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150 | } |
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151 | else if (pid > 0) |
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152 | { |
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153 | if (wait) |
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154 | { |
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155 | waitpid (pid, 0, 0); |
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156 | /* TODO: check status */ |
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157 | } |
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158 | } |
| 153 | } |
159 | } |
| 154 | |
160 | |
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161 | #if ENABLE_HTTP_PROXY |
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162 | // works like strdup |
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163 | u8 * |
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164 | base64_encode (const u8 *data, unsigned int len) |
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165 | { |
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166 | const static char base64[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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167 | |
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168 | unsigned int t, i; |
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169 | const u8 *end = data + len; |
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170 | u8 *res = new u8 [4 * ((len + 2) / 3) + 1]; |
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171 | u8 *out = res; |
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172 | |
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173 | while (data <= end - 3) |
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174 | { |
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175 | t = (((data[0] << 8) | data[1]) << 8) | data[2]; |
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176 | data += 3; |
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177 | |
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178 | *out++ = base64[(t >> 18) & 0x3f]; |
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179 | *out++ = base64[(t >> 12) & 0x3f]; |
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180 | *out++ = base64[(t >> 6) & 0x3f]; |
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181 | *out++ = base64[(t ) & 0x3f]; |
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182 | } |
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183 | |
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184 | for (t = 0, i = 0; data < end; i++) |
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185 | t = (t << 8) | *data++; |
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186 | |
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187 | switch (i) |
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188 | { |
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189 | case 2: |
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190 | *out++ = base64[(t >> 10) & 0x3f]; |
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191 | *out++ = base64[(t >> 4) & 0x3f]; |
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192 | *out++ = base64[(t << 2) & 0x3f]; |
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193 | *out++ = '='; |
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194 | break; |
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195 | case 1: |
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196 | *out++ = base64[(t >> 2) & 0x3f]; |
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197 | *out++ = base64[(t << 4) & 0x3f]; |
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198 | *out++ = '='; |
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199 | *out++ = '='; |
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200 | break; |
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201 | } |
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202 | |
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203 | *out++ = 0; |
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204 | |
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205 | return res; |
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206 | } |
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207 | #endif |
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208 | |
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209 | void |
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210 | id2mac (unsigned int id, void *m) |
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211 | { |
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212 | mac &p = *(mac *)m; |
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213 | |
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214 | if (id) |
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215 | { |
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216 | p[0] = 0xfe; |
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217 | p[1] = 0xfd; |
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218 | p[2] = 0x80; |
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219 | p[3] = 0x00; |
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220 | p[4] = id >> 8; |
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221 | p[5] = id; |
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222 | } |
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223 | else |
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224 | { |
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225 | p[0] = 0xff; |
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226 | p[1] = 0xff; |
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227 | p[2] = 0xff; |
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228 | p[3] = 0xff; |
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229 | p[4] = 0xff; |
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230 | p[5] = 0xff; |
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231 | } |
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232 | } |
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233 | |
