mahara.php 21.8 KB
Newer Older
1 2
<?php
/**
Nigel McNie's avatar
Nigel McNie committed
3
 * This program is part of Mahara
4
 *
5 6 7 8
 *  This program 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.
9
 *
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 *  This program 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
 *
 * @package    mahara
 * @subpackage core
 * @author     Penny Leach <penny@catalyst.net.nz>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
 * @copyright  (C) 2006,2007 Catalyst IT Ltd http://catalyst.net.nz
 * @copyright  (C) portions from Moodle, (C) Martin Dougiamas http://dougiamas.com
25 26
 */

27
defined('INTERNAL') || die();
28 29 30 31 32 33 34


/**
 * This function checks core and plugins
 * for which need to be upgraded/installed
 * @returns array of objects
 */
Penny Leach's avatar
Penny Leach committed
35
function check_upgrades($name = null) {
36 37 38
    // An array of plugins to check
    static $pluginstocheck = array('artefact', 'auth');

39
    $toupgrade = array();
40
    $installing = false;
41

42
    require('version.php');
43
    // check core first...
Penny Leach's avatar
Penny Leach committed
44
    if (empty($name) || $name == 'core') {
45 46 47 48 49 50 51
        try {
            $coreversion = get_config('version');
        } 
        catch (Exception $e) {
            $coreversion = 0;
        }
        if (empty($coreversion)) {
Penny Leach's avatar
Penny Leach committed
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
            $core = new StdClass;
            $core->install = true;
            $core->to = $config->version;
            $core->torelease = $config->release;
            $toupgrade['core'] = $core;
            $installing = true;
        } 
        else if ($config->version > $coreversion) {
            $core = new StdClass;
            $core->upgrade = true;
            $core->from = $coreversion;
            $core->fromrelease = get_config('release');
            $core->to = $config->version;
            $core->torelease = $config->release;
            $toupgrade['core'] = $core;
        }
    }

70 71 72 73 74 75
    // If we were just checking if the core needed to be upgraded, we can stop
    // here.
    if ($name == 'core') {
        return $toupgrade['core'];
    }

Penny Leach's avatar
Penny Leach committed
76
    $plugins = array();
77 78 79
    //if (strpos($name, 'artefact.') === 0) {
    //    $plugins[] = substr($name, 9);
    //}
80
    if (!empty($name)) {
81 82 83 84 85 86 87 88 89 90 91 92
        $plugins[] = explode('.', $name);
    }
    else {
        foreach ($pluginstocheck as $plugin) {
            $dirhandle = opendir(get_config('docroot') . $plugin);
            while (false !== ($dir = readdir($dirhandle))) {
                if (strpos($dir, '.') === 0) {
                    continue;
                }
                if (!empty($installing) && $dir != 'internal') {
                    continue;
                }
93 94 95
                if (!is_dir(get_config('docroot') . $plugin . '/' . $dir)) {
                    continue;
                }
96
                $plugins[] = array($plugin, $dir);
Penny Leach's avatar
Penny Leach committed
97
            }
98
        }
Penny Leach's avatar
Penny Leach committed
99 100
    }

101 102 103 104 105 106 107
    foreach ($plugins as $plugin) {
        $plugintype = $plugin[0];
        $pluginname = $plugin[1];
        $pluginpath = "$plugin[0]/$plugin[1]";
        $pluginkey  = "$plugin[0].$plugin[1]";

        require(get_config('docroot') . $pluginpath . '/version.php');
108
        $pluginversion = 0;
109 110 111 112 113 114 115
        // Don't try to get a plugin version if we are installing - it will
        // definitely fail
        if (!$installing) {
            try {
                $pluginversion = get_config_plugin($plugintype, $pluginname, 'version');
            }
            catch (Exception $e) { }
116
        }
117

118
        if (empty($pluginversion)) {
119 120 121 122 123
            $plugininfo = new StdClass;
            $plugininfo->install = true;
            $plugininfo->to = $config->version;
            $plugininfo->torelease = $config->release;
            $toupgrade[$pluginkey] = $plugininfo;
124
        }
125
        else if ($config->version > $pluginversion) {
126 127 128
            $plugininfo = new StdClass;
            $plugininfo->upgrade = true;
            $plugininfo->from = $pluginversion;
Penny Leach's avatar
Penny Leach committed
129
            try {
130
                $plugininfo->fromrelease = get_config_plugin('artefact', $dir, 'release');
Penny Leach's avatar
Penny Leach committed
131 132
            }
            catch (Exception $e) { }
133 134 135 136
            $plugininfo->to = $config->version;
            $plugininfo->torelease = $config->release;
            $toupgrade[$pluginkey] = $plugininfo;
        }
137 138
    }

Penny Leach's avatar
Penny Leach committed
139 140 141 142 143 144
    // if we've just asked for one, don't return an array...
    if (!empty($name) && count($toupgrade) == 1) {
        $upgrade = new StdClass;
        $upgrade->name = $name;
        foreach ((array)$toupgrade[$name] as $key => $value) {
            $upgrade->{$key} = $value;
145 146 147
        }
        log_dbg('thing to upgrade:');
        log_dbg($upgrade);
Penny Leach's avatar
Penny Leach committed
148 149
        return $upgrade;
    }
150 151
    log_dbg('stuff to upgrade:');
    log_dbg($toupgrade);
152 153 154
    return $toupgrade;
}

Penny Leach's avatar
Penny Leach committed
155
function upgrade_core($upgrade) {
156
    global $db;
Penny Leach's avatar
Penny Leach committed
157 158

    $location = get_config('libroot') . '/db/';
159 160
    $db->StartTrans();

Penny Leach's avatar
Penny Leach committed
161 162 163 164 165 166 167 168 169 170 171 172 173
    if (!empty($upgrade->install)) {
        $status = install_from_xmldb_file($location . 'install.xml'); 
    }
    else {
        require_once($location . 'upgrade.php');
        $status = xmldb_core_upgrade($upgrade->from);
    }
    if (!$status) {
        throw new DatalibException("Failed to upgrade core");
    }

    $status = set_config('version', $upgrade->to);
    $status = $status && set_config('release', $upgrade->torelease);
174 175 176 177 178 179
    
    if ($db->HasFailedTrans()) {
        $status = false;
    }
    $db->CompleteTrans();

Penny Leach's avatar
Penny Leach committed
180 181 182 183
    return $status;
}

function upgrade_plugin($upgrade) {
184 185
    global $db;

Penny Leach's avatar
Penny Leach committed
186 187 188
    $plugintype = '';
    $pluginname = '';

189
    list($plugintype, $pluginname) = explode('.', $upgrade->name);
Penny Leach's avatar
Penny Leach committed
190 191

    $location = get_config('dirroot') . $plugintype . '/' . $pluginname . '/db/';
192
    $db->StartTrans();
193

Penny Leach's avatar
Penny Leach committed
194
    if (!empty($upgrade->install)) {
195
        // @todo add to installed_artefacts
196 197 198 199 200 201
        if (is_readable($location . 'install.xml')) {
            $status = install_from_xmldb_file($location . 'install.xml');
        }
        else {
            $status = true;
        }
Penny Leach's avatar
Penny Leach committed
202 203 204
    }
    else {
        require_once($location . 'upgrade.php');
205 206
        // @todo check file exists first - reasonable for it not to have 
        // db tables at all. should still insert version number and cron etc
Penny Leach's avatar
Penny Leach committed
207 208 209 210
        $function = 'xmldb_' . $plugintype . '_' . $pluginname . '_upgrade';
        $status = $function($upgrade->from);
    }
    
211 212
    if (!$status || $db->HasFailedTrans()) {
        $db->CompleteTrans();
Penny Leach's avatar
Penny Leach committed
213 214
        throw new DatalibException("Failed to upgrade $upgrade->name");
    }
215 216 217

    $status = set_config_plugin($plugintype, $pluginname, 'version', $upgrade->to);
    $status = $status && set_config_plugin($plugintype, $pluginname, 'release', $upgrade->torelease);
Penny Leach's avatar
Penny Leach committed
218 219 220

    // @todo here is where plugins register events and set their crons up
    
221 222 223 224 225
    if ($db->HasFailedTrans()) {
        $status = false;
    }
    $db->CompleteTrans();
    
Penny Leach's avatar
Penny Leach committed
226 227 228
    return $status;
}

229 230 231 232 233 234 235 236 237
/** 
 * work around silly php settings
 * and broken setup stuff about the install
 * and raise a warning/fail depending on severity
 */
function ensure_sanity() {

    // register globals workaround
    if (ini_get_bool('register_globals')) {
238
        log_environ(get_string('registerglobals', 'error'));
239 240 241 242 243 244 245 246
        $massivearray = array_keys(array_merge($_POST,$_GET,$_COOKIE,$_SERVER,$_REQUEST,$_FILES));
        foreach ($massivearray as $tounset) {
            unset($GLOBALS[$tounset]);
        }
    }

    // magic_quotes_gpc workaround
    if (ini_get_bool('magic_quotes_gpc')) {
247
        log_environ(get_string('magicquotesgpc', 'error'));
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266
        function stripslashes_deep($value) {
            $value = is_array($value) ?
                array_map('stripslashes_deep', $value) :
                stripslashes($value);
            return $value;
        }
        $_POST = array_map('stripslashes_deep', $_POST);
        $_GET = array_map('stripslashes_deep', $_GET);
        $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
        $_REQUEST = array_map('stripslashes_deep', $_REQUEST);

        $servervars = array('REQUEST_URI','QUERY_STRING','HTTP_REFERER','PATH_INFO','PHP_SELF','PATH_TRANSLATED');
        foreach ($servervars as $tocheck) {
            if (array_key_exists($tocheck,$_SERVER) && !empty($_SERVER[$tocheck])) {
                $_SERVER[$tocheck] = stripslashes($_SERVER[$tocheck]);
            }
        }
    }

267
    if (ini_get_bool('magic_quotes_runtime')) {
268 269 270 271 272 273 274 275 276
        // Turn of magic_quotes_runtime. Anyone with this on deserves a slap in the face
        set_magic_quotes_runtime(0);
        log_environ(get_string('magicquotesruntime', 'error'));
    }

    if (ini_get_bool('magic_quotes_sybase')) {
        // See above comment re. magic_quotes_runtime
        @ini_set('magic_quotes_sybase', 0);
        log_environ(get_string('magicquotessybase', 'error'));
277 278
    }

279 280 281
    if (ini_get_bool('safe_mode')) {
        // We don't run with safe mode
        throw new ConfigSanityException(get_string('safemodeon', 'error'));
282 283
    }

284 285 286 287 288 289 290
    // Other things that might be worth checking:
    //    memory limit
    //    file_uploads (off|on)
    //    upload_max_filesize
    //    allow_url_fopen (only if we use this)
    //

291 292
    // dataroot inside document root.
    if (strpos(get_config('dataroot'),get_config('docroot')) !== false) {
293
        throw new ConfigSanityException(get_string('datarootinsidedocroot','error'));
294 295
    }

296 297
    // dataroot not writable..
    if (!check_dir_exists(get_config('dataroot')) || !is_writable(get_config('dataroot'))) {
298
        throw new ConfigSanityException(get_string('datarootnotwritable', 'error', get_config('dataroot')));
299
    }
300 301 302 303 304

    // Json functions not available
    if (!function_exists('json_encode') || !function_exists('json_decode')) {
        throw new ConfigSanityException(get_string('jsonextensionnotloaded', 'error'));
    }
305 306 307 308
    
    check_dir_exists(get_config('dataroot').'smarty/compile');
    check_dir_exists(get_config('dataroot').'smarty/cache');

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
function get_string($identifier,$section) {

    $langconfigstrs = array('parentlanguage', 'strftimedate', 'strftimedateshort', 'strftimedatetime',
                            'strftimedaydate', 'strftimedaydatetime', 'strftimedayshort', 'strftimedaytime',
                            'strftimemonthyear', 'strftimerecent', 'strftimerecentfull', 'strftimetime',
                            'thislanguage');

    if (in_array($identifier, $langconfigstrs)) {
        $section = 'langconfig';  
    }

    $variables = func_get_args();
    if (count($variables) > 2) { // we have some stuff we need to sprintf
        array_shift($variables);
        array_shift($variables); //shift off the first two.
    } else {
        $variables = array();
    }
    
    $lang = current_language();

    if ($section == '') {
        $section = 'mahara';
    }

    // Define the locations of language strings for this section
    $docroot = get_config('docroot');
    $locations = array();
    
    if ($section == 'mahara' || $section != 'langconfig') {
Penny Leach's avatar
Penny Leach committed
341
        $locations[] = $docroot.'lang/';
342 343 344 345 346 347 348 349 350
    } else {
        $extras = array('artefacts','auth'); // more later..
        foreach ($extras as $tocheck) {
            if (strpos($section,$tocheck.'.') === 0) {
                $pluginname = substr($section,strlen($tocheck));
                $locations[] = $docroot.$tocheck.'/'.$pluginname.'/lang/';
            }
        }
    }
351

352 353 354 355
    // First check all the normal locations for the string in the current language
    foreach ($locations as $location) {
        //if local directory not found, or particular string does not exist in local direcotry
        $langfile = $location.$lang.'/'.$section.'.php';
Penny Leach's avatar
Penny Leach committed
356
        if (is_readable($langfile)) {
357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372
            if ($result = get_string_from_file($identifier, $langfile)) {
                return format_langstring($result,$variables);
            }
        }
    }

    // If the preferred language was English (utf8) we can abort now
    // saving some checks beacuse it's the only "root" lang
    if ($lang == 'en.utf8') {
        return '[['. $identifier .']]';
    }

    // Is a parent language defined?  If so, try to find this string in a parent language file

    foreach ($locations as $location) {
        $langfile = $location.$lang.'/langconfig.php';
Penny Leach's avatar
Penny Leach committed
373
        if (is_readable($langfile)) {
374 375
            if ($parentlang = get_string_from_file('parentlanguage', $langfile)) {
                $langfile = $location.$parentlang.'/'.$section.'.php';
Penny Leach's avatar
Penny Leach committed
376
                if (is_readable($langfile)) {
377 378 379 380 381 382 383 384 385 386 387 388
                    if ($result = get_string_from_file($identifier, $langfile)) {
                        return format_langstring($result,$variables);
                    }
                }
            }
        }
    }

    /// Our only remaining option is to try English
    foreach ($locations as $location) {
        //if local_en not found, or string not found in local_en
        $langfile = $location.'en.utf8/'.$module.'.php';
Penny Leach's avatar
Penny Leach committed
389
        if (is_readable($langfile)) {
390 391 392 393 394 395 396
            if ($result = get_string_from_file($identifier, $langfile)) {
                return format_langstring($result,$variables);
            }
        }
    }

    return '[['.$identifier.']]';  // Last resort
397
}
398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438



/**
 * This function is only used from {@link get_string()}.
 *
 * @internal Only used from get_string, not meant to be public API
 * @param string $identifier ?
 * @param string $langfile ?
 * @param string $destination ?
 * @return string|false ?
 * @staticvar array $strings Localized strings
 * @access private
 * @todo Finish documenting this function.
 */
function get_string_from_file($identifier, $langfile) {

    static $strings;    // Keep the strings cached in memory.

    if (empty($strings[$langfile])) {
        $string = array();
        include ($langfile);
        $strings[$langfile] = $string;
    } else {
        $string = &$strings[$langfile];
    }

    if (!isset ($string[$identifier])) {
        return false;
    }

    return $string[$identifier];
}

/**
 * This function makes the return value of ini_get consistent if you are
 * setting server directives through the .htaccess file in apache.
 * Current behavior for value set from php.ini On = 1, Off = [blank]
 * Current behavior for value set from .htaccess On = On, Off = Off
 * Contributed by jdell @ unr.edu
 *
439
 * @param string $ini_get_arg setting to look for
440 441 442 443 444 445 446 447 448 449 450
 * @return bool
 */
function ini_get_bool($ini_get_arg) {
    $temp = ini_get($ini_get_arg);

    if ($temp == '1' or strtolower($temp) == 'on') {
        return true;
    }
    return false;
}

451 452 453 454 455 456 457 458 459 460 461 462 463
/**
 * This function loads up the basic $CFG
 * from the database table
 * note that it doesn't load plugin config
 * as not every page needs them
 * @return boolean false if the assignment fails (generally if the databse is not installed)
 */
function load_config() {
    global $CFG;
    
    try {
        $dbconfig = get_records('config');
    } 
464
    catch (DatalibException $e) {
465 466 467 468
        return false;
    }
    
    foreach ($dbconfig as $cfg) {
469
        if (isset($CFG->{$cfg->field}) && $CFG->{$cfg->field} != $cfg->value) {
Penny Leach's avatar
Penny Leach committed
470
            // @todo warn that we're overriding db config with $CFG
471 472 473 474 475 476 477 478 479
            continue;
        }
        $CFG->{$cfg->field} = $cfg->value;
    }

    return true;
}

/**
480 481 482 483 484 485
 * This function returns a value from $CFG
 * or null if it is not found
 * 
 * @param string $key config setting to look for 
 * @return mixed
 */
486 487 488 489 490 491 492 493
function get_config($key) {
    global $CFG;
    if (array_key_exists($key,$CFG)) {
        return $CFG->$key;
    }
    return null;
}

494 495 496 497 498 499 500 501 502

/**
 * This function sets a config variable
 * both in $CFG and in the database
 *
 * @param string $key config field to set
 * @param string $value config value
 */
function set_config($key, $value) {
503 504 505 506
    global $CFG;

    if (get_record('config', 'field', $key)) {
        if (set_field('config', 'value', $value, 'field', $key)) {
Penny Leach's avatar
Penny Leach committed
507 508 509 510 511 512 513
            $status = true;
        }
    } 
    else {
        $config = new StdClass;
        $config->field = $key;
        $config->value = $value;
514
        $status = insert_record('config', $config);
Penny Leach's avatar
Penny Leach committed
515 516 517
    }

    if (!empty($status)) {
518 519 520
        $CFG->{$key} = $value;
        return true;
    }
Penny Leach's avatar
Penny Leach committed
521

522 523 524 525 526 527 528 529 530 531 532 533 534 535
    return false;
}

/**
 * This function returns a value for $CFG for a plugin
 * or null if it is not found
 * note that it may go and look in the database
 *
 * @param string $plugintype eg artefact
 * @param string $pluginname eg blog
 * @param string $key the config setting to look for
 */
function get_config_plugin($plugintype, $pluginname, $key) {
    global $CFG;
536

537 538 539 540 541 542 543
    if (array_key_exists('plugin',$CFG)
        && array_key_exists($plugintype,$CFG->plugin)
        && array_key_exists($pluginname,$CFG->plugin->{$plugintype})
        && array_key_exists($key,$CFG->plugin->{$plugintype}->{$pluginname})) {
        return  $CFG->plugin->{$plugintype}->{$pluginname}->{$key};
    }
    
544 545 546
    // @todo: an optimisation might be to get all fields related to the plugin instead, as
    // it may be quite likely that if one config item is requested for a plugin another
    // might be.
547 548 549 550 551 552 553 554
    if (!$value = get_field('config_'.$plugintype,'value','plugin',$pluginname,'field',$key)) {
        $value = null;
    } 
    
    $CFG->plugin->{$plugintype}->{$pluginname}->{$key} = $value;
    return $value;
}

Penny Leach's avatar
Penny Leach committed
555
function set_config_plugin($plugintype, $pluginname, $key, $value) {
556
    $table = 'config_' . $plugintype;
Penny Leach's avatar
Penny Leach committed
557

558
    if (get_field($table, 'value', 'plugin', $pluginname, 'field', $key)) {
Penny Leach's avatar
Penny Leach committed
559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576
        if (set_field($table,'value',$key,'plugin',$pluginname, 'field',$value)) { 
            $status = true;
        }
    }
    else {
        $pconfig = new StdClass;
        $pconfig->plugin = $pluginname;
        $pconfig->field  = $key;
        $pconfig->value  = $value;
        $status = insert_record($table,$pconfig);
    }
    if ($status) {
        $CFG->plugin->{$plugintype}->{$pluginname}->{$key} = $value;
        return true;
    }
    return false;
}

577
/**
578 579 580 581 582
 * This function prints an array or object
 * wrapped inside <pre></pre>
 * 
 * @param $mixed value to print
 */
583 584 585 586 587 588
function print_object($mixed) {
    echo '<pre>';
    print_r($mixed);
    echo '</pre>';
}

589
/**
590 591 592 593 594 595
 * This function returns the current 
 * language to use, either for a given user
 * or sitewide, or the default
 * 
 * @return string
 */
596 597 598 599 600 601 602 603 604 605 606
function current_language() {
    global $USER, $CFG;
    if (!empty($USER->lang)) {
        return $USER->lang;
    }
    if (!empty($CFG->lang)) {
        return $CFG->lang;
    }
    return 'en.utf8';
}

607
/**
608 609 610 611 612 613
 * Helper function to sprintf language strings
 * with a variable number of arguments
 * 
 * @param string $string raw string to use
 * @param array $args arguments to sprintf
 */
614 615 616 617
function format_langstring($string,$args) {
    return call_user_func_array('sprintf',array_merge(array($string),$args));
}

618 619 620 621 622 623 624 625 626 627 628 629 630
/**
 * Helper function to figure out whether an array is an array or a hash
 * @param array $array array to check
 * @return bool true if the array is a hash
 */
function is_hash($array) {
    if (!is_array($array)) {
        return false;
    }
    $diff = array_diff_assoc($array,array_values($array));
    return !empty($diff);
}

631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650


/**
 * Function to check if a directory exists and optionally create it.
 *
 * @param string absolute directory path
 * @param boolean create directory if does not exist
 * @param boolean create directory recursively
 *
 * @return boolean true if directory exists or created
 */
function check_dir_exists($dir, $create=true, $recursive=true) {

    $status = true;

    if(!is_dir($dir)) {
        if (!$create) {
            $status = false;
        } else {
            umask(0000); 
651
            $status = @mkdir($dir, 0777, true);
Nigel McNie's avatar
Nigel McNie committed
652
            // @todo has the umask been clobbered at this point, and is this a bad thing?
653 654 655 656 657
        }
    }
    return $status;
}

658 659 660 661 662 663 664 665 666
/**
 * Checks that a username is in valid form
 *
 * @todo need such a function for password too.
 */
function validate_username($username) {
    return preg_match('/^[a-zA-Z0-9_\.@]+$/', $username);
}

Penny Leach's avatar
Penny Leach committed
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711
/**
 * Function to require a plugin file. This is to avoid doing 
 * require and include directly with variables.
 * This function is the one safe point to require plugin files.
 * so USE it :)
 * @param string $plugintype the type of plugin (eg artefact)
 * @param string $pluginname the name of the plugin (eg blog)
 * @param string $filename the name of the file to include within the plugin structure
 * @param string $function (optional, defaults to require) the require/include function to use
 * @param string $nonfatal (optional, defaults to false) just returns false if the file doesn't exist
 */
function safe_require($plugintype, $pluginname, $filename, $function='require', $nonfatal=false) {

    $plugintype = clean_filename($plugintype);
    $pluginname = clean_filename($pluginname);

    if (!in_array($function,array('require','include','require_once','include_once'))) {
        if (!empty($nonfatal)) {
            return false;
        }
        throw new Exception ('invalid require type');
    }

    $fullpath = get_config('docroot') . $plugintype . '/' . $pluginname . '/' . $filename;
    if (!$realpath = realpath($fullpath)) {
        if (!empty($nonfatal)) {
            return false;
        }
        throw new Exception ("File $fullpath did not exist");
    }

    if (strpos($realpath, get_config('docroot') !== 0)) {
        if (!empty($nonfatal)) {
            return false;
        }
        throw new Exception ("File $fullpath was outside document root!");
    }

    if ($function == 'require') { return require($realpath); }
    if ($function == 'include') { return include($realpath); }
    if ($function == 'require_once') { return require_once($realpath); }
    if ($function == 'include_once') { return include_once($realpath); }
    
}

712 713 714 715 716 717 718 719 720 721 722
/**
 * Used by XMLDB
 */
function debugging ($message, $level) {
    log_dbg($message);
}
function xmldb_dbg($message) {
    log_warn($message);
}
define('DEBUG_DEVELOPER', 'whocares');

723
?>