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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 | <?php/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- *//*# ***** BEGIN LICENSE BLOCK *****# This file is part of InDefero, an open source project management application.# Copyright (C) 2010 Céondo Ltd and contributors.## InDefero is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; either version 2 of the License, or# (at your option) any later version.## InDefero is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# GNU General Public License for more details.## You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA## ***** END LICENSE BLOCK ***** *//** * Monotone stdio class * * Connects to a monotone process and executes commands via its * stdio interface * * @author Thomas Keller <me@thomaskeller.biz> */class IDF_Scm_Monotone_Stdio{ /** this is the most recent STDIO version. The number is output at the protocol start. Older versions of monotone (prior 0.47) do not output it and are therefor incompatible */ public static $SUPPORTED_STDIO_VERSION = 2; private $project; private $proc; private $pipes; private $oob; private $cmdnum; private $lastcmd; /** * Constructor - starts the stdio process * * @param IDF_Project */ public function __construct(IDF_Project $project) { $this->project = $project; $this->start(); } /** * Destructor - stops the stdio process */ public function __destruct() { $this->stop(); } /** * Returns a string with additional options which are passed to * an mtn instance connecting to remote databases * * @return string */ public function _getAuthOptions() { // no remote authentication - the simple case if (!Pluf::f('mtn_remote_auth', true)) { return '--key= '; } $prjconf = $this->project->getConf(); $name = $prjconf->getVal('mtn_client_key_name', false); $hash = $prjconf->getVal('mtn_client_key_hash', false); if (!$name || !$hash) { throw new IDF_Scm_Exception(sprintf( __('Monotone client key name or hash not in project conf.') )); } $keydir = Pluf::f('tmp_folder').'/mtn-client-keys'; if (!file_exists($keydir)) { if (!mkdir($keydir)) { throw new IDF_Scm_Exception(sprintf( __('The key directory %s could not be created.'), $keydir )); } } // in case somebody cleaned out the cache, we restore the key here $keyfile = $keydir . '/' . $name .'.'. $hash; if (!file_exists($keyfile)) { $data = $prjconf->getVal('mtn_client_key_data'); if (!file_put_contents($keyfile, $data, LOCK_EX)) { throw new IDF_Scm_Exception(sprintf( __('Could not write client key "%s"'), $keyfile )); } } return sprintf('--keydir=%s --key=%s ', escapeshellarg($keydir), escapeshellarg($hash) ); } /** * Starts the stdio process and resets the command counter */ public function start() { if (is_resource($this->proc)) $this->stop(); $remote_db_access = Pluf::f('mtn_db_access', 'remote') == 'remote'; $cmd = Pluf::f('idf_exec_cmd_prefix', '') . Pluf::f('mtn_path', 'mtn') . ' '; $opts = Pluf::f('mtn_opts', array()); foreach ($opts as $opt) { $cmd .= sprintf('%s ', escapeshellarg($opt)); } if ($remote_db_access) { $cmd .= $this->_getAuthOptions(); $host = sprintf(Pluf::f('mtn_remote_url'), $this->project->shortname); $cmd .= sprintf('automate remote_stdio %s', escapeshellarg($host)); } else { $repo = sprintf(Pluf::f('mtn_repositories'), $this->project->shortname); if (!file_exists($repo)) { throw new IDF_Scm_Exception( "repository file '$repo' does not exist" ); } $cmd .= sprintf('--db %s automate stdio', escapeshellarg($repo)); } $descriptors = array( 0 => array('pipe', 'r'), 1 => array('pipe', 'w'), 2 => array('pipe', 'w'), ); $env = array('LANG' => 'en_US.UTF-8'); $this->proc = proc_open($cmd, $descriptors, $this->pipes, null, $env); if (!is_resource($this->proc)) { throw new IDF_Scm_Exception('could not start stdio process'); } $this->_checkVersion(); $this->cmdnum = -1; } /** * Stops the stdio process and closes all pipes */ public function stop() { if (!is_resource($this->proc)) return; fclose($this->pipes[0]); fclose($this->pipes[1]); fclose($this->pipes[2]); proc_close($this->proc); $this->proc = null; } /** * select()'s on stdout and returns true as soon as we got new * data to read, false if the select() timed out * * @return boolean * @throws IDF_Scm_Exception */ private function _waitForReadyRead() { if (!is_resource($this->pipes[1])) return false; $read = array($this->pipes[1], $this->pipes[2]); $write = $except = null; $streamsChanged = stream_select( $read, $write, $except, 0, 20000 ); if ($streamsChanged === false) { throw new IDF_Scm_Exception( 'Could not select() on read pipe' ); } if ($streamsChanged == 0) { return false; } return true; } /** * Checks the version of the used stdio protocol * * @throws IDF_Scm_Exception */ private function _checkVersion() { $this->_waitForReadyRead(); $version = fgets($this->pipes[1]); if ($version === false) { throw new IDF_Scm_Exception( "Could not determine stdio version, stderr is:\n". $this->_readStderr() ); } if (!preg_match('/^format-version: (\d+)$/', $version, $m) || $m[1] != self::$SUPPORTED_STDIO_VERSION) { throw new IDF_Scm_Exception( 'stdio format version mismatch, expected "'. self::$SUPPORTED_STDIO_VERSION.'", got "'.@$m[1].'"' ); } fgets($this->pipes[1]); } /** * Writes a command to stdio * * @param array * @param array * @throws IDF_Scm_Exception */ private function _write(array $args, array $options = array()) { $cmd = ''; if (count($options) > 0) { $cmd = 'o'; foreach ($options as $k => $vals) { if (!is_array($vals)) $vals = array($vals); foreach ($vals as $v) { $cmd .= strlen((string)$k) . ':' . (string)$k; $cmd .= strlen((string)$v) . ':' . (string)$v; } } $cmd .= 'e '; } $cmd .= 'l'; foreach ($args as $arg) { $cmd .= strlen((string)$arg) . ':' . (string)$arg; } $cmd .= "e\n"; if (!fwrite($this->pipes[0], $cmd)) { throw new IDF_Scm_Exception("could not write '$cmd' to process"); } $this->lastcmd = $cmd; $this->cmdnum++; } /** * Reads all output from stderr and returns it * * @return string */ private function _readStderr() { $err = ""; while (($line = fgets($this->pipes[2])) !== false) { $err .= $line; } return empty($err) ? '<empty>' : $err; } /** * Reads the last output from the stdio process, parses and returns it * * @return string * @throws IDF_Scm_Exception */ private function _readStdout() { $this->oob = array('w' => array(), 'p' => array(), 't' => array(), 'e' => array()); $output = ""; $errcode = 0; while (true) { if (!$this->_waitForReadyRead()) continue; $data = array(0,"",0); $idx = 0; while (true) { $c = fgetc($this->pipes[1]); if ($c === false) { throw new IDF_Scm_Exception( "No data on stdin, stderr is:\n". $this->_readStderr() ); } if ($c == ':') { if ($idx == 2) break; ++$idx; continue; } if (is_numeric($c)) $data[$idx] = $data[$idx] * 10 + $c; else $data[$idx] .= $c; } // sanity if ($this->cmdnum != $data[0]) { throw new IDF_Scm_Exception( 'command numbers out of sync; expected '. $this->cmdnum .', got '. $data[0] ); } $toRead = $data[2]; $buffer = ""; while ($toRead > 0) { $buffer .= fread($this->pipes[1], $toRead); $toRead = $data[2] - strlen($buffer); } switch ($data[1]) { case 'w': case 'p': case 't': case 'e': $this->oob[$data[1]][] = $buffer; continue; case 'm': $output .= $buffer; continue; case 'l': $errcode = $buffer; break 2; } } if ($errcode != 0) { throw new IDF_Scm_Exception( "command '{$this->lastcmd}' returned error code $errcode: ". implode(' ', $this->oob['e']) ); } return $output; } /** * Executes a command over stdio and returns its result * * @param array Array of arguments * @param array Array of options as key-value pairs. Multiple options * can be defined in sub-arrays, like * "r" => array("123...", "456...") * @return string */ public function exec(array $args, array $options = array()) { $this->_write($args, $options); return $this->_readStdout(); } /** * Returns the last out-of-band output for a previously executed * command as associative array with 'e' (error), 'w' (warning), * 'p' (progress) and 't' (ticker, unparsed) as keys * * @return array */ public function getLastOutOfBandOutput() { return $this->oob; }} |
