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  Cross-Site Scripting
Cross-Site Scripting enables an attacker to inject code into the response of a web-request that is viewed by other users. It can for example be used to bypass access controls, or even to take over other users' accounts.
  File Exposure
File Exposure allows an attacker to gain access to local files that he should not be able to access. These files can for example include database credentials, or other configuration files.
  File Manipulation
File Manipulation enables an attacker to write custom data to files. This potentially leads to injection of arbitrary code on the server.
  Object Injection
Object Injection enables an attacker to inject an object into PHP code, and can lead to arbitrary code execution, file exposure, or file manipulation attacks.
  Code Injection
Code Injection enables an attacker to execute arbitrary code on the server.
  Response Splitting
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  File Inclusion
File Inclusion enables an attacker to inject custom files into PHP's file loading mechanism, either explicitly passed to include, or for example via PHP's auto-loading mechanism.
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  SQL Injection
SQL Injection enables an attacker to execute arbitrary SQL code on your database server gaining access to user data, or manipulating user data.
  XPath Injection
XPath Injection enables an attacker to modify the parts of XML document that are read. If that XML document is for example used for authentication, this can lead to further vulnerabilities similar to SQL Injection.
  LDAP Injection
LDAP Injection enables an attacker to inject LDAP statements potentially granting permission to run unauthorized queries, or modify content inside the LDAP tree.
  Header Injection
  Other Vulnerability
This category comprises other attack vectors such as manipulating the PHP runtime, loading custom extensions, freezing the runtime, or similar.
  Regex Injection
Regex Injection enables an attacker to execute arbitrary code in your PHP process.
  XML Injection
XML Injection enables an attacker to read files on your local filesystem including configuration files, or can be abused to freeze your web-server process.
  Variable Injection
Variable Injection enables an attacker to overwrite program variables with custom data, and can lead to further vulnerabilities.
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includes/class-sensei-grading-user-quiz.php (6 issues)

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1
<?php
0 ignored issues
show
Coding Style Compatibility introduced by
For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 12 and the first side effect is on line 2.

The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.

The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.

To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.

Loading history...
2
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
3
4
/**
5
 * Grading User Profile in Sensei.
6
 *
7
 * @package Assessment
8
 * @author Automattic
9
 *
10
 * @since 1.3.0
11
 */
12
class Sensei_Grading_User_Quiz {
13
	public $user_id;
14
	public $lesson_id;
15
	public $quiz_id;
16
17
	/**
18
	 * Constructor
19
	 * @since  1.3.0
20
	 */
21
	public function __construct ( $user_id = 0, $quiz_id = 0 ) {
22
		$this->user_id = intval( $user_id );
23
		$this->quiz_id = intval( $quiz_id );
24
		$this->lesson_id = get_post_meta( $this->quiz_id, '_quiz_lesson', true );
25
	} // End __construct()
26
27
	/**
28
	 * build_data_array builds the data for use on the page
29
	 * Overloads the parent method
30
	 * @since  1.3.0
31
	 * @return array
32
	 */
33
	public function build_data_array() {
34
		$data_array = Sensei_Utils::sensei_get_quiz_questions( $this->quiz_id );
35
		return $data_array;
36
	} // End build_data_array()
37
38
	/**
39
	 * Display output to the admin view
40
     *
41
     * This view is shown when grading a quiz for a single user in admin under grading
42
     *
43
	 * @since  1.3.0
44
	 * @return html
45
	 */
46
	public function display() {
47
		// Get data for the user
48
		$questions = $this->build_data_array();
49
50
51
		$count = 0;
52
		$graded_count = 0;
53
		$user_quiz_grade_total = 0;
54
		$quiz_grade_total = 0;
55
		$quiz_grade = 0;
56
        $lesson_id = $this->lesson_id;
57
        $user_id = $this->user_id;
58
59
		?><form name="<?php esc_attr_e( 'quiz_' . $this->quiz_id ); ?>" action="" method="post">
60
			<?php wp_nonce_field( 'sensei_manual_grading', '_wp_sensei_manual_grading_nonce' ); ?>
61
			<input type="hidden" name="sensei_manual_grade" value="<?php esc_attr_e( $this->quiz_id ); ?>" />
62
			<input type="hidden" name="sensei_grade_next_learner" value="<?php esc_attr_e( $this->user_id ); ?>" />
63
			<div class="total_grade_display">
64
				<span><?php esc_attr_e( __( 'Grade:', 'woothemes-sensei' ) ); ?></span>
65
				<span class="total_grade_total"><?php echo $user_quiz_grade_total; ?></span> / <span class="quiz_grade_total"><?php echo $quiz_grade_total; ?></span> (<span class="total_grade_percent"><?php echo $quiz_grade; ?></span>%)
66
			</div>
67
			<div class="buttons">
68
				<input type="submit" value="<?php esc_attr_e( __( 'Save', 'woothemes-sensei' ) ); ?>" class="grade-button button-primary" title="Saves grades as currently marked on this page" />
69
				<input type="button" value="<?php esc_attr_e( __( 'Auto grade', 'woothemes-sensei' ) ); ?>" class="autograde-button button-secondary" title="Where possible, automatically grades questions that have not yet been graded" />
70
				<input type="reset" value="<?php esc_attr_e( __( 'Reset', 'woothemes-sensei' ) ); ?>" class="reset-button button-secondary" title="Resets all questions to ungraded and total grade to 0" />
71
			</div>
72
			<div class="clear"></div><br/><?php
73
74
		$lesson_status_id = Sensei_Utils::sensei_get_activity_value( array( 'post_id' => $this->lesson_id, 'user_id' => $this->user_id, 'type' => 'sensei_lesson_status', 'field' => 'comment_ID' ) );
75
		$user_quiz_grade = get_comment_meta( $lesson_status_id, 'grade', true );
76
		$correct_answers = 0;
77
78
		foreach( $questions as $question ) {
79
			$question_id = $question->ID;
80
			++$count;
81
82
			$type = false;
0 ignored issues
show
$type is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

Loading history...
83
			$type_name = '';
0 ignored issues
show
$type_name is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

Loading history...
84
85
			$type = Sensei()->question->get_question_type( $question_id );
86
87
			$question_answer_notes = Sensei()->quiz->get_user_question_feedback( $lesson_id, $question_id, $user_id );
88
89
90
			$question_grade_total = Sensei()->question->get_question_grade( $question_id );
91
			$quiz_grade_total += $question_grade_total;
92
93
			$right_answer = get_post_meta( $question_id, '_question_right_answer', true );
94
			$user_answer_content = Sensei()->quiz->get_user_question_answer( $lesson_id, $question_id, $user_id );
95
			$type_name = __( 'Multiple Choice', 'woothemes-sensei' );
96
			$grade_type = 'manual-grade';
97
98
			switch( $type ) {
99
				case 'boolean':
100
					$type_name = __( 'True/False', 'woothemes-sensei' );
101
					$right_answer = ucfirst( $right_answer );
102
					$user_answer_content = ucfirst( $user_answer_content );
103
					$grade_type = 'auto-grade';
104
				break;
105
				case 'multiple-choice':
106
					$type_name = __( 'Multiple Choice', 'woothemes-sensei' );
107
					$grade_type = 'auto-grade';
108
				break;
109
				case 'gap-fill':
110
					$type_name = __( 'Gap Fill', 'woothemes-sensei' );
111
112
					$right_answer_array = explode( '||', $right_answer );
113
					if ( isset( $right_answer_array[0] ) ) { $gapfill_pre = $right_answer_array[0]; } else { $gapfill_pre = ''; }
114
					if ( isset( $right_answer_array[1] ) ) { $gapfill_gap = $right_answer_array[1]; } else { $gapfill_gap = ''; }
115
					if ( isset( $right_answer_array[2] ) ) { $gapfill_post = $right_answer_array[2]; } else { $gapfill_post = ''; }
116
117
					if( ! $user_answer_content ) {
118
						$user_answer_content = '______';
119
					}
120
121
					$right_answer = $gapfill_pre . ' <span class="highlight">' . $gapfill_gap . '</span> ' . $gapfill_post;
122
					$user_answer_content = $gapfill_pre . ' <span class="highlight">' . $user_answer_content . '</span> ' . $gapfill_post;
123
					$grade_type = 'auto-grade';
124
125
				break;
126
				case 'multi-line':
127
					$type_name = __( 'Multi Line', 'woothemes-sensei' );
128
					$grade_type = 'manual-grade';
129
				break;
130
				case 'single-line':
131
					$type_name = __( 'Single Line', 'woothemes-sensei' );
132
					$grade_type = 'manual-grade';
133
				break;
134
				case 'file-upload':
135
					$type_name = __( 'File Upload', 'woothemes-sensei' );
136
					$grade_type = 'manual-grade';
137
138
					// Get uploaded file
139
					if( $user_answer_content ) {
140
						$attachment_id = $user_answer_content;
141
						$answer_media_url = $answer_media_filename = '';
0 ignored issues
show
$answer_media_filename is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

Loading history...
$answer_media_url is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

Loading history...
142
						if( 0 < intval( $attachment_id ) ) {
143
							$answer_media_url = wp_get_attachment_url( $attachment_id );
144
							$answer_media_filename = basename( $answer_media_url );
145
							if( $answer_media_url && $answer_media_filename ) {
146
								$user_answer_content = sprintf( __( 'Submitted file: %1$s', 'woothemes-sensei' ), '<a href="' . esc_url( $answer_media_url ) . '" target="_blank">' . esc_html( $answer_media_filename ) . '</a>' );
147
							}
148
						}
149
					} else {
150
						$user_answer_content = '';
151
					}
152
				break;
153
				default:
154
					// Nothing
155
				break;
156
			}
157
			$user_answer_content = (array) $user_answer_content;
158
			$right_answer = (array) $right_answer;
159
			$question_title = sprintf( __( 'Question %d: ', 'woothemes-sensei' ), $count ) . $type_name;
160
161
			$graded_class = '';
0 ignored issues
show
$graded_class is not used, you could remove the assignment.

This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.

$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

Both the $myVar assignment in line 1 and the $higher assignment in line 2 are dead. The first because $myVar is never used and the second because $higher is always overwritten for every possible time line.

Loading history...
162
			$user_question_grade = Sensei()->quiz->get_user_question_grade( $lesson_id, $question_id, $user_id );
163
			$graded_class = 'ungraded';
164
			if ( 0 == $question_grade_total && 0 == intval( $user_question_grade ) ) {
165
				// Question skips grading
166
				$grade_type = 'zero-graded';
167
				$graded_class = '';
168
				++$correct_answers;
169
				++$graded_count;
170
				$user_question_grade = 0;
171
			}
172
			elseif( intval( $user_question_grade ) > 0 ) {
173
				$graded_class = 'user_right';
174
				++$correct_answers;
175
				$user_quiz_grade_total += $user_question_grade;
176
				++$graded_count;
177
			} else {
178
				if( ! is_string( $user_question_grade ) && intval( $user_question_grade ) == 0 ) {
179
					$graded_class = 'user_wrong';
180
					++$graded_count;
181
				}
182
				$user_question_grade = 0;
183
			}
184
185
			?><div class="postbox question_box <?php esc_attr_e( $type ); ?> <?php esc_attr_e( $grade_type ); ?> <?php esc_attr_e( $graded_class ); ?>" id="<?php esc_attr_e( 'question_' . $question_id . '_box' ); ?>">
186
				<div class="handlediv" title="Click to toggle"><br></div>
187
				<h3 class="hndle"><span><?php echo $question_title; ?></span></h3>
188
				<div class="inside">
189
					<div class="sensei-grading-actions">
190
						<div class="actions">
191
							<input type="hidden" class="question_id" value="<?php esc_attr_e( $question_id ); ?>" />
192
							<input type="hidden" class="question_total_grade" name="question_total_grade" value="<?php echo esc_attr( $question_grade_total ); ?>" />
193
							<span class="grading-mark icon_right"><input type="radio" class="<?php esc_attr_e( 'question_' . $question_id . '_right_option' ); ?>" name="<?php esc_attr_e( 'question_' . $question_id ); ?>" value="right" <?php checked( $graded_class, 'user_right', true ); ?> /></span>
194
							<span class="grading-mark icon_wrong"><input type="radio" class="<?php esc_attr_e( 'question_' . $question_id . '_wrong_option' ); ?>" name="<?php esc_attr_e( 'question_' . $question_id ); ?>" value="wrong" <?php checked( $graded_class, 'user_wrong', true ); ?> /></span>
195
							<input type="number" class="question-grade" name="<?php esc_attr_e( 'question_' . $question_id . '_grade' ); ?>" id="<?php esc_attr_e( 'question_' . $question_id . '_grade' ); ?>" value="<?php echo esc_attr( $user_question_grade ); ?>" min="0" max="<?php echo esc_attr( $question_grade_total ); ?>" />
196
							<span class="question-grade-total"><?php echo $question_grade_total; ?></span>
197
						</div>
198
					</div>
199
					<div class="sensei-grading-answer">
200
						<h4><?php echo apply_filters( 'sensei_question_title', $question->post_title ); ?></h4>
201
						<?php echo apply_filters( 'the_content', $question->post_content );?>
202
						<p class="user-answer"><?php
203
							foreach ( $user_answer_content as $_user_answer ) {
204
205
                                if( 'multi-line' == Sensei()->question->get_question_type( $question->ID ) ){
206
207
                                    $_user_answer = htmlspecialchars_decode( nl2br( esc_html($_user_answer) ) );
208
209
                                }
210
211
								echo apply_filters( 'sensei_answer_text', $_user_answer ) . "<br>";
212
							}
213
						?></p>
214
						<div class="right-answer">
215
							<h5><?php _e( 'Correct answer', 'woothemes-sensei' ) ?></h5>
216
							<span class="correct-answer"><?php
217
								foreach ( $right_answer as $_right_answer ) {
218
219
									echo apply_filters( 'sensei_answer_text', $_right_answer ) . "<br>";
220
221
								}
222
							?></span>
223
						</div>
224
						<div class="answer-notes">
225
							<h5><?php _e( 'Grading Notes', 'woothemes-sensei' ) ?></h5>
226
							<textarea class="correct-answer" name="questions_feedback[<?php esc_attr_e( $question_id ); ?>]" placeholder="<?php _e( 'Add notes here...', 'woothemes-sensei' ) ?>"><?php echo $question_answer_notes; ?></textarea>
227
						</div>
228
					</div>
229
				</div>
230
			</div><?php
231
		}
232
233
		$quiz_grade = intval( $user_quiz_grade );
234
		$all_graded = 'no';
235
		if( intval( $count ) == intval( $graded_count ) ) {
236
			$all_graded = 'yes';
237
		}
238
239
		?>  <input type="hidden" name="total_grade" id="total_grade" value="<?php esc_attr_e( $user_quiz_grade_total ); ?>" />
240
			<input type="hidden" name="total_questions" id="total_questions" value="<?php esc_attr_e( $count ); ?>" />
241
			<input type="hidden" name="quiz_grade_total" id="quiz_grade_total" value="<?php esc_attr_e( $quiz_grade_total ); ?>" />
242
			<input type="hidden" name="total_graded_questions" id="total_graded_questions" value="<?php esc_attr_e( $graded_count ); ?>" />
243
			<input type="hidden" name="all_questions_graded" id="all_questions_graded" value="<?php esc_attr_e( $all_graded ); ?>" />
244
			<div class="total_grade_display">
245
				<span><?php esc_attr_e( __( 'Grade:', 'woothemes-sensei' ) ); ?></span>
246
				<span class="total_grade_total"><?php echo $user_quiz_grade_total; ?></span> / <span class="quiz_grade_total"><?php echo $quiz_grade_total; ?></span> (<span class="total_grade_percent"><?php echo $quiz_grade; ?></span>%)
247
			</div>
248
			<div class="buttons">
249
				<input type="submit" value="<?php esc_attr_e( 'Save' ); ?>" class="grade-button button-primary" title="Saves grades as currently marked on this page" />
250
				<input type="button" value="<?php esc_attr_e( __( 'Auto grade', 'woothemes-sensei' ) ); ?>" class="autograde-button button-secondary" title="Where possible, automatically grades questions that have not yet been graded" />
251
				<input type="reset" value="<?php esc_attr_e( __( 'Reset', 'woothemes-sensei' ) ); ?>" class="reset-button button-secondary" title="Resets all questions to ungraded and total grade to 0" />
252
			</div>
253
			<div class="clear"></div>
254
			<script type="text/javascript">
255
				jQuery( window ).load( function() {
256
					// Calculate total grade on page load to make sure everything is set up correctly
257
					jQuery.fn.autoGrade();
258
				});
259
			</script>
260
		</form><?php
261
	} // End display()
262
263
} // End Class
264
265
/**
266
 * Class WooThemes_Sensei_Grading_User_Quiz
267
 * @ignore only for backward compatibility
268
 * @since 1.9.0
269
 */
270
class WooThemes_Sensei_Grading_User_Quiz extends Sensei_Grading_User_Quiz{}
271