init.php 3.86 KB
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<?php
/**
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 * Copyright 2006,2007 Catalyst IT Ltd (http://www.catalyst.net.nz)
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 *
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 * This file is part of maraha.
 *
 * maraha 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.

 * maraha 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 maraha; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */

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defined('INTERNAL') || die();

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// @todo <nigel> Set up error handling. For now, use trigger_error. I will
// update all calls as necessary once error handling is finalised.
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$CFG = new StdClass;
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$CFG->docroot = dirname(__FILE__) . '/';
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// Figure out our include path
if (!empty($_SERVER['MAHARA_LIBDIR'])) {
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    $CFG->libroot = $_SERVER['MAHARA_LIBDIR'];
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}
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else {
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    $CFG->libroot = dirname(__FILE__) . '/lib/';
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}
set_include_path('.' . PATH_SEPARATOR . $CFG->libroot);
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// Set up error handling
require 'errors.php';

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if (!is_readable($CFG->docroot . 'config.php')) {
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    // @todo Later, this will redirect to the installer script. For now, we
    // just log and exit.
    log_environ('Not installed! Please create config.php from config-dist.php');
    exit;
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}

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require('config.php');
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$CFG = (object)array_merge((array)$cfg, (array)$CFG);
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// Fix up paths in $CFG
foreach (array('docroot', 'dataroot') as $path) {
    $CFG->{$path} = (substr($CFG->{$path}, -1) != DIRECTORY_SEPARATOR) ? $CFG->{$path} . DIRECTORY_SEPARATOR : $CFG->{$path};
}
if (!isset($CFG->wwwroot)) {
    $proto = (isset($_SERVER['HTTPS'])) ? 'https://' : 'http://';
    $host =  (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) ? $_SERVER['HTTP_X_FORWARDED_HOST'] : $_SERVER['HTTP_HOST'];
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    $CFG->wwwroot = $proto . $host . '/' . substr(dirname(__FILE__), strlen($_SERVER['DOCUMENT_ROOT'])). '/';
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}

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// core libraries
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require('mahara.php');
require('dml.php');
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require('constants.php');
require('web.php');
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ensure_sanity();
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// Database access functions
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require('adodb/adodb-exceptions.inc.php');
require('adodb/adodb.inc.php');
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try {
    // ADODB does not provide the raw driver error message if the connection
    // fails for some reason, so we use output buffering to catch whatever
    // the error is instead.
    ob_start();
    
    $db = &ADONewConnection($CFG->dbtype);
    if (!empty($CFG->dbport)) {
        $CFG->dbhost .= ':'.$CFG->dbport;
    }
    if (!empty($CFG->dbpersist)) {    // Use persistent connection (default)
        $dbconnected = $db->PConnect($CFG->dbhost,$CFG->dbuser,$CFG->dbpass,$CFG->dbname);
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    } 
    else {                                                     // Use single connection
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        $dbconnected = $db->Connect($CFG->dbhost,$CFG->dbuser,$CFG->dbpass,$CFG->dbname);
    }
    
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    $db->SetFetchMode(ADODB_FETCH_ASSOC);
    configure_dbconnection();

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    ob_end_clean();
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}
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catch (Exception $e) {
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    $errormessage = ob_get_contents();
    ob_end_clean();
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    // @todo <nigel|penny>: At this point the raw error message can be munged from
    // $errormessage, while the $e object holds some other information (like backtrace,
    // which can be parsed with adodb_backtrace($e->gettrace());). At this point a
    // nice message should be displayed explaining the problem etc. etc.
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    throw new Exception($errormessage);
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}

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load_config();

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if (!get_config('theme')) { 
    // if it's not set, we're probably not installed, 
    // so set it in $CFG directly rather than the db which doesn't yet exist
    $CFG->theme = 'default'; 
}

$CFG->themeurl = get_config('wwwroot').'theme/'.get_config('theme').'/static/';

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?>