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131 lines
4.3 KiB
131 lines
4.3 KiB
<?php
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/*
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DOKEOS - elearning and course management software
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For a full list of contributors, see documentation/credits.html
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See "documentation/licence.html" more details.
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Contact:
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Dokeos
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Rue des Palais 44 Paleizenstraat
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B-1030 Brussels - Belgium
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Tel. +32 (2) 211 34 56
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*/
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/**
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* @package dokeos.survey
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* @author Arnaud Ligot <arnaud@cblue.be>
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* @version $Id: $
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*
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* small peace code to enable user to access images included into survey
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* which are accessible by non authenticated users. This file is included
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* by document/download.php
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*/
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function check_download_survey($course, $invitation, $doc_url) {
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require_once('survey.lib.php');
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require_once (api_get_path(LIBRARY_PATH)."/course.lib.php");
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// getting all the course information
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$_course = CourseManager::get_course_information($course);
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// Database table definitions
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$table_survey = Database :: get_course_table(TABLE_SURVEY, $_course['db_name']);
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$table_survey_question = Database :: get_course_table(TABLE_SURVEY_QUESTION, $_course['db_name']);
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$table_survey_question_option = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION, $_course['db_name']);
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$table_course = Database :: get_main_table(TABLE_MAIN_COURSE);
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$table_user = Database :: get_main_table(TABLE_MAIN_USER);
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$table_survey_invitation = Database :: get_course_table(TABLE_SURVEY_INVITATION, $_course['db_name']);
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// now we check if the invitationcode is valid
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$sql = "SELECT * FROM $table_survey_invitation WHERE invitation_code = '".Database::escape_string($invitation)."'";
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$result = Database::query($sql, __FILE__, __LINE__);
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if (Database::num_rows($result) < 1)
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{
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Display :: display_error_message(get_lang('WrongInvitationCode'), false);
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Display :: display_footer();
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exit;
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}
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$survey_invitation = mysql_fetch_assoc($result);
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// now we check if the user already filled the survey
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if ($survey_invitation['answered'] == 1)
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{
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Display :: display_error_message(get_lang('YouAlreadyFilledThisSurvey'), false);
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Display :: display_footer();
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exit;
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}
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// very basic security check: check if a text field from a survey/answer/option contains the name of the document requested
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//////////////
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// fetch survey ID
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//////////////
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// If this is the case there will be a language choice
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$sql = "SELECT * FROM $table_survey WHERE code='".Database::escape_string($survey_invitation['survey_code'])."'";
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$result = Database::query($sql, __FILE__, __LINE__);
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if (Database::num_rows($result) > 1)
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{
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if ($_POST['language'])
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{
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$survey_invitation['survey_id'] = $_POST['language'];
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}
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else
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{
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echo '<form id="language" name="language" method="POST" action="'.api_get_self().'?course='.$_GET['course'].'&invitationcode='.$_GET['invitationcode'].'">';
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echo ' <select name="language">';
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while ($row=mysql_fetch_assoc($result))
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{
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echo '<option value="'.$row['survey_id'].'">'.$row['lang'].'</option>';
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}
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echo '</select>';
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echo ' <input type="submit" name="Submit" value="'.get_lang('Ok').'" />';
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echo '</form>';
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display::display_footer();
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exit;
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}
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}
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else
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{
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$row=mysql_fetch_assoc($result);
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$survey_invitation['survey_id'] = $row['survey_id'];
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}
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$sql = "select count(*) from $table_survey where survey_id = ".$survey_invitation['survey_id']."
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and (
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title LIKE '%$doc_url%'
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or subtitle LIKE '%$doc_url%'
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or intro LIKE '%$doc_url%'
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or surveythanks LIKE '%$doc_url%'
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)
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union select count(*) from $table_survey_question where survey_id = ".$survey_invitation['survey_id']."
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and (
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survey_question LIKE '%$doc_url%'
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or survey_question_comment LIKE '%$doc_url%'
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)
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union select count(*) from $table_survey_question_option where survey_id = ".$survey_invitation['survey_id']."
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and (
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option_text LIKE '%$doc_url%'
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)";
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$result = Database::query($sql, __FILE__, __LINE__);
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if (Database::num_rows($result) == 0)
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{
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Display :: display_error_message(get_lang('WrongInvitationCode'), false);
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Display :: display_footer();
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exit;
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}
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return $_course;
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}
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?>
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