Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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 3 of the License, or

// (at your option) any later version.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace core;

/**

 * Unit tests for format_text defined in weblib.php.

 *

 * @covers ::format_text

 *

 * @package   core

 * @category  test

 * @copyright 2015 The Open University

 * @license   http://www.gnu.org/copyleft/gpl.html GNU Public License

 * @covers ::format_text

 */

class weblib_format_text_test extends \advanced_testcase {

    public function test_format_text_format_html(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertMatchesRegularExpression('~^<p><img class="icon emoticon" alt="smile" title="smile" ' .

                'src="https://www.example.com/moodle/theme/image.php/boost/core/1/s/smiley" /></p>$~',

                format_text('<p>:-)</p>', FORMAT_HTML));

    }

    public function test_format_text_format_html_no_filters(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertEquals('<p>:-)</p>',

                format_text('<p>:-)</p>', FORMAT_HTML, array('filter' => false)));

    }

    public function test_format_text_format_plain(): void {

        // Note FORMAT_PLAIN does not filter ever, no matter we ask for filtering.

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertEquals(':-)',

                format_text(':-)', FORMAT_PLAIN));

    }

    public function test_format_text_format_plain_no_filters(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertEquals(':-)',

                format_text(':-)', FORMAT_PLAIN, array('filter' => false)));

    }

    public function test_format_text_format_markdown(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertMatchesRegularExpression('~^<p><em><img class="icon emoticon" alt="smile" title="smile" ' .

                'src="https://www.example.com/moodle/theme/image.php/boost/core/1/s/smiley" />' .

                '</em></p>\n$~',

                format_text('*:-)*', FORMAT_MARKDOWN));

    }

    public function test_format_text_format_markdown_nofilter(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertEquals("<p><em>:-)</em></p>\n",

                format_text('*:-)*', FORMAT_MARKDOWN, array('filter' => false)));

    }

    public function test_format_text_format_moodle(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertMatchesRegularExpression('~^<div class="text_to_html"><p>' .

                '<img class="icon emoticon" alt="smile" title="smile" ' .

                'src="https://www.example.com/moodle/theme/image.php/boost/core/1/s/smiley" /></p></div>$~',

                format_text('<p>:-)</p>', FORMAT_MOODLE));

    }

    public function test_format_text_format_moodle_no_filters(): void {

        $this->resetAfterTest();

        filter_set_global_state('emoticon', TEXTFILTER_ON);

        $this->assertEquals('<div class="text_to_html"><p>:-)</p></div>',

                format_text('<p>:-)</p>', FORMAT_MOODLE, array('filter' => false)));

    }

    /**

     * Make sure that nolink tags and spans prevent linking in filters that support it.

     */

    public function test_format_text_nolink(): void {

        global $CFG;

        $this->resetAfterTest();

        filter_set_global_state('activitynames', TEXTFILTER_ON);

        $course = $this->getDataGenerator()->create_course();

        $context = \context_course::instance($course->id);

        $page = $this->getDataGenerator()->create_module('page',

            ['course' => $course->id, 'name' => 'Test 1']);

        $cm = get_coursemodule_from_instance('page', $page->id, $page->course, false, MUST_EXIST);

        $pageurl = $CFG->wwwroot. '/mod/page/view.php?id=' . $cm->id;

        $this->assertSame(

            '<p>Read <a class="autolink" title="Test 1" href="' . $pageurl . '">Test 1</a>.</p>',

            format_text('<p>Read Test 1.</p>', FORMAT_HTML, ['context' => $context]));

        $this->assertSame(

            '<p>Read <a class="autolink" title="Test 1" href="' . $pageurl . '">Test 1</a>.</p>',

            format_text('<p>Read Test 1.</p>', FORMAT_HTML, ['context' => $context, 'noclean' => true]));

        $this->assertSame(

            '<p>Read Test 1.</p>',

            format_text('<p><nolink>Read Test 1.</nolink></p>', FORMAT_HTML, ['context' => $context, 'noclean' => false]));

        $this->assertSame(

            '<p>Read Test 1.</p>',

            format_text('<p><nolink>Read Test 1.</nolink></p>', FORMAT_HTML, ['context' => $context, 'noclean' => true]));

        $this->assertSame(

            '<p><span class="nolink">Read Test 1.</span></p>',

            format_text('<p><span class="nolink">Read Test 1.</span></p>', FORMAT_HTML, ['context' => $context]));

    }

    public function test_format_text_overflowdiv(): void {

        $this->assertEquals('<div class="no-overflow"><p>Hello world</p></div>',

                format_text('<p>Hello world</p>', FORMAT_HTML, array('overflowdiv' => true)));

    }

    /**

     * Test adding blank target attribute to links

     *

     * @dataProvider format_text_blanktarget_testcases

     * @param string $link The link to add target="_blank" to

     * @param string $expected The expected filter value

     */

    public function test_format_text_blanktarget($link, $expected): void {

        $actual = format_text($link, FORMAT_MOODLE, array('blanktarget' => true, 'filter' => false, 'noclean' => true));

        $this->assertEquals($expected, $actual);

    }

    /**

     * Data provider for the test_format_text_blanktarget testcase

     *

     * @return array of testcases

     */

    public function format_text_blanktarget_testcases() {

        return [

            'Simple link' => [

                '<a href="https://www.youtube.com/watch?v=JeimE8Wz6e4">Hey, that\'s pretty good!</a>',

                '<div class="text_to_html"><a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" target="_blank"' .

                    ' rel="noreferrer">Hey, that\'s pretty good!</a></div>'

            ],

            'Link with rel' => [

                '<a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" rel="nofollow">Hey, that\'s pretty good!</a>',

                '<div class="text_to_html"><a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" rel="nofollow noreferrer"' .

                    ' target="_blank">Hey, that\'s pretty good!</a></div>'

            ],

            'Link with rel noreferrer' => [

                '<a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" rel="noreferrer">Hey, that\'s pretty good!</a>',

                '<div class="text_to_html"><a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" rel="noreferrer"' .

                 ' target="_blank">Hey, that\'s pretty good!</a></div>'

            ],

            'Link with target' => [

                '<a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" target="_self">Hey, that\'s pretty good!</a>',

                '<div class="text_to_html"><a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" target="_self">' .

                    'Hey, that\'s pretty good!</a></div>'

            ],

            'Link with target blank' => [

                '<a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" target="_blank">Hey, that\'s pretty good!</a>',

                '<div class="text_to_html"><a href="https://www.youtube.com/watch?v=JeimE8Wz6e4" target="_blank"' .

                    ' rel="noreferrer">Hey, that\'s pretty good!</a></div>'

            ],

            'Link with Frank\'s casket inscription' => [

                '<a href="https://en.wikipedia.org/wiki/Franks_Casket">ᚠᛁᛋᚳ᛫ᚠᛚᚩᛞᚢ᛫ᚪᚻᚩᚠᚩᚾᚠᛖᚱᚷ ᛖᚾᛒᛖᚱᛁᚷ ᚹᚪᚱᚦᚷᚪ᛬ᛋᚱᛁᚳᚷᚱᚩᚱᚾᚦᚫᚱᚻᛖᚩᚾᚷᚱᛖᚢᛏᚷᛁᛋᚹᚩᛗ ᚻ' .

                    'ᚱᚩᚾᚫᛋᛒᚪᚾ ᛗᚫᚷᛁᚠᛁᛋᚳ᛫ᚠᛚᚩᛞᚢ᛫ᚪᚻᚩᚠᚩᚾᚠᛖᚱᚷ ᛖᚾᛒᛖᚱᛁᚷ ᚹᚪᚱᚦᚷᚪ᛬ᛋᚱᛁᚳᚷᚱᚩᚱᚾᚦᚫᚱᚻᛖᚩᚾᚷᚱᛖᚢᛏᚷᛁᛋᚹᚩᛗ ᚻᚱᚩᚾᚫᛋᛒᚪᚾ ᛗᚫᚷᛁ</a>',

                '<div class="text_to_html"><a href="https://en.wikipedia.org/wiki/Franks_Casket" target="_blank" ' .

                    'rel="noreferrer">ᚠᛁᛋᚳ᛫ᚠᛚᚩᛞᚢ᛫ᚪᚻᚩᚠᚩᚾᚠᛖᚱᚷ ᛖᚾᛒᛖᚱᛁᚷ ᚹᚪᚱᚦᚷᚪ᛬ᛋᚱᛁᚳᚷᚱᚩᚱᚾᚦᚫᚱᚻᛖᚩᚾᚷᚱᛖᚢᛏᚷᛁᛋᚹᚩᛗ ᚻᚱᚩᚾᚫᛋᛒᚪᚾ ᛗᚫᚷᛁᚠᛁᛋᚳ᛫ᚠᛚᚩᛞᚢ᛫ᚪᚻᚩᚠᚩᚾᚠᛖᚱᚷ ᛖᚾ' .

                    'ᛒᛖᚱᛁᚷ ᚹᚪᚱᚦᚷᚪ᛬ᛋᚱᛁᚳᚷᚱᚩᚱᚾᚦᚫᚱᚻᛖᚩᚾᚷᚱᛖᚢᛏᚷᛁᛋᚹᚩᛗ ᚻᚱᚩᚾᚫᛋᛒᚪᚾ ᛗᚫᚷᛁ</a></div>'

             ],

            'No link' => [

                'Some very boring text written with the Latin script',

                '<div class="text_to_html">Some very boring text written with the Latin script</div>'

            ],

            'No link with Thror\'s map runes' => [

                'ᛋᛏᚫᚾᛞ ᛒᚣ ᚦᛖ ᚷᚱᛖᚣ ᛋᛏᚩᚾᛖ ᚻᚹᛁᛚᛖ ᚦᛖ ᚦᚱᚢᛋᚻ ᚾᚩᚳᛋ ᚫᚾᛞ ᚦᛖ ᛋᛖᛏᛏᛁᚾᚷ ᛋᚢᚾ ᚹᛁᚦ ᚦᛖ ᛚᚫᛋᛏ ᛚᛁᚷᚻᛏ ᚩᚠ ᛞᚢᚱᛁᚾᛋ ᛞᚫᚣ ᚹᛁᛚᛚ ᛋᚻᛁᚾᛖ ᚢᛈᚩᚾ ᚦᛖ ᚳᛖᚣᚻᚩᛚᛖ',

                '<div class="text_to_html">ᛋᛏᚫᚾᛞ ᛒᚣ ᚦᛖ ᚷᚱᛖᚣ ᛋᛏᚩᚾᛖ ᚻᚹᛁᛚᛖ ᚦᛖ ᚦᚱᚢᛋᚻ ᚾᚩᚳᛋ ᚫᚾᛞ ᚦᛖ ᛋᛖᛏᛏᛁᚾᚷ ᛋᚢᚾ ᚹᛁᚦ ᚦᛖ ᛚᚫᛋᛏ ᛚᛁᚷᚻᛏ ᚩᚠ ᛞᚢᚱᛁᚾᛋ ᛞᚫᚣ ᚹ' .

                'ᛁᛚᛚ ᛋᚻᛁᚾᛖ ᚢᛈᚩᚾ ᚦᛖ ᚳᛖᚣᚻᚩᛚᛖ</div>'

            ]

        ];

    }

    /**

     * Test ability to force cleaning of otherwise non-cleaned content.

     *

     * @dataProvider format_text_cleaning_testcases

     *

     * @param string $input Input text

     * @param string $nocleaned Expected output of format_text() with noclean=true

     * @param string $cleaned Expected output of format_text() with noclean=false

     */

    public function test_format_text_cleaning($input, $nocleaned, $cleaned): void {

        global $CFG;

        $this->resetAfterTest();

        $CFG->forceclean = false;

        $actual = format_text($input, FORMAT_HTML, ['filter' => false, 'noclean' => false]);

        $this->assertEquals($cleaned, $actual);

        $CFG->forceclean = true;

        $actual = format_text($input, FORMAT_HTML, ['filter' => false, 'noclean' => false]);

        $this->assertEquals($cleaned, $actual);

        $CFG->forceclean = false;

        $actual = format_text($input, FORMAT_HTML, ['filter' => false, 'noclean' => true]);

        $this->assertEquals($nocleaned, $actual);

        $CFG->forceclean = true;

        $actual = format_text($input, FORMAT_HTML, ['filter' => false, 'noclean' => true]);

        $this->assertEquals($cleaned, $actual);

    }

    /**

     * Data provider for the test_format_text_cleaning testcase

     *

     * @return array of testcases (string)testcasename => [(string)input, (string)nocleaned, (string)cleaned]

     */

    public function format_text_cleaning_testcases() {

        return [

            'JavaScript' => [

                'Hello <script type="text/javascript">alert("XSS");</script> world',

                'Hello <script type="text/javascript">alert("XSS");</script> world',

                'Hello  world',

            ],

            'Inline frames' => [

                'Let us go phishing! <iframe src="https://1.2.3.4/google.com"></iframe>',

                'Let us go phishing! <iframe src="https://1.2.3.4/google.com"></iframe>',

                'Let us go phishing! ',

            ],

            'Malformed A tags' => [

                '<a onmouseover="alert(document.cookie)">xxs link</a>',

                '<a onmouseover="alert(document.cookie)">xxs link</a>',

                '<a>xxs link</a>',

            ],

            'Malformed IMG tags' => [

                '<IMG """><SCRIPT>alert("XSS")</SCRIPT>">',

                '<IMG """><SCRIPT>alert("XSS")</SCRIPT>">',

                '">',

            ],

            'On error alert' => [

                '<IMG SRC=/ onerror="alert(String.fromCharCode(88,83,83))"></img>',

                '<IMG SRC=/ onerror="alert(String.fromCharCode(88,83,83))"></img>',

                '<img src="/" alt="" />',

            ],

            'IMG onerror and javascript alert encode' => [

                '<img src=x onerror="&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000083&#0000083&#0000039&#0000041">',

                '<img src=x onerror="&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000083&#0000083&#0000039&#0000041">',

                '<img src="x" alt="x" />',

            ],

            'DIV background-image' => [

                '<DIV STYLE="background-image: url(javascript:alert(\'XSS\'))">',

                '<DIV STYLE="background-image: url(javascript:alert(\'XSS\'))">',

                '<div></div>',

            ],

        ];

    }

    public function test_with_context_as_options(): void {

        $this->assertEquals(

            '<p>Example</p>',

            format_text('<p>Example</p>', FORMAT_HTML, \context_system::instance()),

        );

        $messages = $this->getDebuggingMessages();

        $this->assertdebuggingcalledcount(1);

        $this->assertStringContainsString(

            'The options argument should not be a context object directly.',

            $messages[0]->message,

        );

    }

}