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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.

Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Weblib tests.
  19   *
  20   * @package    core
  21   * @category   phpunit
  22   * @copyright  &copy; 2006 The Open University
  23   * @author     T.J.Hunt@open.ac.uk
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU Public License
  25   */
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  
  30  class core_weblib_testcase extends advanced_testcase {
  31  
  32      public function test_format_string() {
  33          global $CFG;
  34  
  35          // Ampersands.
  36          $this->assertSame("&amp; &amp;&amp;&amp;&amp;&amp; &amp;&amp;", format_string("& &&&&& &&"));
  37          $this->assertSame("ANother &amp; &amp;&amp;&amp;&amp;&amp; Category", format_string("ANother & &&&&& Category"));
  38          $this->assertSame("ANother &amp; &amp;&amp;&amp;&amp;&amp; Category", format_string("ANother & &&&&& Category", true));
  39          $this->assertSame("Nick's Test Site &amp; Other things", format_string("Nick's Test Site & Other things", true));
  40          $this->assertSame("& < > \" '", format_string("& < > \" '", true, ['escape' => false]));
  41  
  42          // String entities.
  43          $this->assertSame("&quot;", format_string("&quot;"));
  44  
  45          // Digital entities.
  46          $this->assertSame("&11234;", format_string("&11234;"));
  47  
  48          // Unicode entities.
  49          $this->assertSame("&#4475;", format_string("&#4475;"));
  50  
  51          // < and > signs.
  52          $originalformatstringstriptags = $CFG->formatstringstriptags;
  53  
  54          $CFG->formatstringstriptags = false;
  55          $this->assertSame('x &lt; 1', format_string('x < 1'));
  56          $this->assertSame('x &gt; 1', format_string('x > 1'));
  57          $this->assertSame('x &lt; 1 and x &gt; 0', format_string('x < 1 and x > 0'));
  58  
  59          $CFG->formatstringstriptags = true;
  60          $this->assertSame('x &lt; 1', format_string('x < 1'));
  61          $this->assertSame('x &gt; 1', format_string('x > 1'));
  62          $this->assertSame('x &lt; 1 and x &gt; 0', format_string('x < 1 and x > 0'));
  63  
  64          $CFG->formatstringstriptags = $originalformatstringstriptags;
  65      }
  66  
  67      /**
  68       * The format string static caching should include the filters option to make
  69       * sure filters are correctly applied when requested.
  70       */
  71      public function test_format_string_static_caching_with_filters() {
  72          global $CFG;
  73  
  74          $this->resetAfterTest(true);
  75          $this->setAdminUser();
  76          $generator = $this->getDataGenerator();
  77          $course = $generator->create_course();
  78          $user = $generator->create_user();
  79          $rawstring = 'Shortname <a href="#">link</a> curseword';
  80          $expectednofilter = strip_links($rawstring);
  81          $expectedfilter = 'Shortname link \*\**';
  82          $striplinks = true;
  83          $context = context_course::instance($course->id);
  84          $options = [
  85              'context' => $context,
  86              'escape' => true,
  87              'filter' => false
  88          ];
  89  
  90          $this->setUser($user);
  91  
  92          // Format the string without filters. It should just strip the
  93          // links.
  94          $nofilterresult = format_string($rawstring, $striplinks, $options);
  95          $this->assertEquals($expectednofilter, $nofilterresult);
  96  
  97          // Add the censor filter. Make sure it's enabled globally.
  98          $CFG->filterall = true;
  99          $CFG->stringfilters = 'censor';
 100          $CFG->filter_censor_badwords = 'curseword';
 101          filter_set_global_state('censor', TEXTFILTER_ON);
 102          filter_set_local_state('censor', $context->id, TEXTFILTER_ON);
 103          // This time we want to apply the filters.
 104          $options['filter'] = true;
 105          $filterresult = format_string($rawstring, $striplinks, $options);
 106          $this->assertRegExp("/$expectedfilter/", $filterresult);
 107  
 108          filter_set_local_state('censor', $context->id, TEXTFILTER_OFF);
 109  
 110          // Confirm that we get back the cached string. The result should be
 111          // the same as the filtered text above even though we've disabled the
 112          // censor filter in between.
 113          $cachedresult = format_string($rawstring, $striplinks, $options);
 114          $this->assertRegExp("/$expectedfilter/", $cachedresult);
 115      }
 116  
 117      public function test_s() {
 118          // Special cases.
 119          $this->assertSame('0', s(0));
 120          $this->assertSame('0', s('0'));
 121          $this->assertSame('0', s(false));
 122          $this->assertSame('', s(null));
 123  
 124          // Normal cases.
 125          $this->assertSame('This Breaks &quot; Strict', s('This Breaks " Strict'));
 126          $this->assertSame('This Breaks &lt;a&gt;&quot; Strict&lt;/a&gt;', s('This Breaks <a>" Strict</a>'));
 127  
 128          // Unicode characters.
 129          $this->assertSame('Café', s('Café'));
 130          $this->assertSame('一, 二, 三', s('一, 二, 三'));
 131  
 132          // Don't escape already-escaped numeric entities. (Note, this behaviour
 133          // may not be desirable. Perhaps we should remove these tests and that
 134          // functionality, but we can only do that if we understand why it was added.)
 135          $this->assertSame('An entity: &#x09ff;.', s('An entity: &#x09ff;.'));
 136          $this->assertSame('An entity: &#1073;.', s('An entity: &#1073;.'));
 137          $this->assertSame('An entity: &amp;amp;.', s('An entity: &amp;.'));
 138          $this->assertSame('Not an entity: &amp;amp;#x09ff;.', s('Not an entity: &amp;#x09ff;.'));
 139  
 140          // Test all ASCII characters (0-127).
 141          for ($i = 0; $i <= 127; $i++) {
 142              $character = chr($i);
 143              $result = s($character);
 144              switch ($character) {
 145                  case '"' :
 146                      $this->assertSame('&quot;', $result);
 147                      break;
 148                  case '&' :
 149                      $this->assertSame('&amp;', $result);
 150                      break;
 151                  case "'" :
 152                      $this->assertSame('&#039;', $result);
 153                      break;
 154                  case '<' :
 155                      $this->assertSame('&lt;', $result);
 156                      break;
 157                  case '>' :
 158                      $this->assertSame('&gt;', $result);
 159                      break;
 160                  default:
 161                      $this->assertSame($character, $result);
 162                      break;
 163              }
 164          }
 165      }
 166  
 167      public function test_format_text_email() {
 168          $this->assertSame("This is a TEST\n",
 169              format_text_email('<p>This is a <strong>test</strong></p>', FORMAT_HTML));
 170          $this->assertSame("This is a TEST\n",
 171              format_text_email('<p class="frogs">This is a <strong class=\'fishes\'>test</strong></p>', FORMAT_HTML));
 172          $this->assertSame('& so is this',
 173              format_text_email('&amp; so is this', FORMAT_HTML));
 174          $this->assertSame('Two bullets: ' . core_text::code2utf8(8226) . ' ' . core_text::code2utf8(8226),
 175              format_text_email('Two bullets: &#x2022; &#8226;', FORMAT_HTML));
 176          $this->assertSame(core_text::code2utf8(0x7fd2).core_text::code2utf8(0x7fd2),
 177              format_text_email('&#x7fd2;&#x7FD2;', FORMAT_HTML));
 178      }
 179  
 180      public function test_obfuscate_email() {
 181          $email = 'some.user@example.com';
 182          $obfuscated = obfuscate_email($email);
 183          $this->assertNotSame($email, $obfuscated);
 184          $back = core_text::entities_to_utf8(urldecode($email), true);
 185          $this->assertSame($email, $back);
 186      }
 187  
 188      public function test_obfuscate_text() {
 189          $text = 'Žluťoučký koníček 32131';
 190          $obfuscated = obfuscate_text($text);
 191          $this->assertNotSame($text, $obfuscated);
 192          $back = core_text::entities_to_utf8($obfuscated, true);
 193          $this->assertSame($text, $back);
 194      }
 195  
 196      public function test_highlight() {
 197          $this->assertSame('This is <span class="highlight">good</span>',
 198                  highlight('good', 'This is good'));
 199  
 200          $this->assertSame('<span class="highlight">span</span>',
 201                  highlight('SpaN', 'span'));
 202  
 203          $this->assertSame('<span class="highlight">SpaN</span>',
 204                  highlight('span', 'SpaN'));
 205  
 206          $this->assertSame('<span><span class="highlight">span</span></span>',
 207                  highlight('span', '<span>span</span>'));
 208  
 209          $this->assertSame('He <span class="highlight">is</span> <span class="highlight">good</span>',
 210                  highlight('good is', 'He is good'));
 211  
 212          $this->assertSame('This is <span class="highlight">good</span>',
 213                  highlight('+good', 'This is good'));
 214  
 215          $this->assertSame('This is good',
 216                  highlight('-good', 'This is good'));
 217  
 218          $this->assertSame('This is goodness',
 219                  highlight('+good', 'This is goodness'));
 220  
 221          $this->assertSame('This is <span class="highlight">good</span>ness',
 222                  highlight('good', 'This is goodness'));
 223  
 224          $this->assertSame('<p><b>test</b> <b>1</b></p><p><b>1</b></p>',
 225                  highlight('test 1', '<p>test 1</p><p>1</p>', false, '<b>', '</b>'));
 226  
 227          $this->assertSame('<p><b>test</b> <b>1</b></p><p><b>1</b></p>',
 228                      highlight('test +1', '<p>test 1</p><p>1</p>', false, '<b>', '</b>'));
 229  
 230          $this->assertSame('<p><b>test</b> 1</p><p>1</p>',
 231                      highlight('test -1', '<p>test 1</p><p>1</p>', false, '<b>', '</b>'));
 232      }
 233  
 234      public function test_replace_ampersands() {
 235          $this->assertSame("This &amp; that &nbsp;", replace_ampersands_not_followed_by_entity("This & that &nbsp;"));
 236          $this->assertSame("This &amp;nbsp that &nbsp;", replace_ampersands_not_followed_by_entity("This &nbsp that &nbsp;"));
 237      }
 238  
 239      public function test_strip_links() {
 240          $this->assertSame('this is a link', strip_links('this is a <a href="http://someaddress.com/query">link</a>'));
 241      }
 242  
 243      public function test_wikify_links() {
 244          $this->assertSame('this is a link [ http://someaddress.com/query ]', wikify_links('this is a <a href="http://someaddress.com/query">link</a>'));
 245      }
 246  
 247      public function test_clean_text() {
 248          $text = "lala <applet>xx</applet>";
 249          $this->assertSame($text, clean_text($text, FORMAT_PLAIN));
 250          $this->assertSame('lala xx', clean_text($text, FORMAT_MARKDOWN));
 251          $this->assertSame('lala xx', clean_text($text, FORMAT_MOODLE));
 252          $this->assertSame('lala xx', clean_text($text, FORMAT_HTML));
 253      }
 254  
 255      public function test_qualified_me() {
 256          global $PAGE, $FULLME, $CFG;
 257          $this->resetAfterTest();
 258  
 259          $PAGE = new moodle_page();
 260  
 261          $FULLME = $CFG->wwwroot.'/course/view.php?id=1&xx=yy';
 262          $this->assertSame($FULLME, qualified_me());
 263  
 264          $PAGE->set_url('/course/view.php', array('id'=>1));
 265          $this->assertSame($CFG->wwwroot.'/course/view.php?id=1', qualified_me());
 266      }
 267  
 268      public function test_null_progres_trace() {
 269          $this->resetAfterTest(false);
 270  
 271          $trace = new null_progress_trace();
 272          $trace->output('do');
 273          $trace->output('re', 1);
 274          $trace->output('mi', 2);
 275          $trace->finished();
 276          $output = ob_get_contents();
 277          $this->assertSame('', $output);
 278          $this->expectOutputString('');
 279      }
 280  
 281      public function test_text_progres_trace() {
 282          $this->resetAfterTest(false);
 283  
 284          $trace = new text_progress_trace();
 285          $trace->output('do');
 286          $trace->output('re', 1);
 287          $trace->output('mi', 2);
 288          $trace->finished();
 289          $this->expectOutputString("do\n  re\n    mi\n");
 290      }
 291  
 292      public function test_html_progres_trace() {
 293          $this->resetAfterTest(false);
 294  
 295          $trace = new html_progress_trace();
 296          $trace->output('do');
 297          $trace->output('re', 1);
 298          $trace->output('mi', 2);
 299          $trace->finished();
 300          $this->expectOutputString("<p>do</p>\n<p>&#160;&#160;re</p>\n<p>&#160;&#160;&#160;&#160;mi</p>\n");
 301      }
 302  
 303      public function test_html_list_progress_trace() {
 304          $this->resetAfterTest(false);
 305  
 306          $trace = new html_list_progress_trace();
 307          $trace->output('do');
 308          $trace->output('re', 1);
 309          $trace->output('mi', 2);
 310          $trace->finished();
 311          $this->expectOutputString("<ul>\n<li>do<ul>\n<li>re<ul>\n<li>mi</li>\n</ul>\n</li>\n</ul>\n</li>\n</ul>\n");
 312      }
 313  
 314      public function test_progres_trace_buffer() {
 315          $this->resetAfterTest(false);
 316  
 317          $trace = new progress_trace_buffer(new html_progress_trace());
 318          ob_start();
 319          $trace->output('do');
 320          $trace->output('re', 1);
 321          $trace->output('mi', 2);
 322          $trace->finished();
 323          $output = ob_get_contents();
 324          ob_end_clean();
 325          $this->assertSame("<p>do</p>\n<p>&#160;&#160;re</p>\n<p>&#160;&#160;&#160;&#160;mi</p>\n", $output);
 326          $this->assertSame($output, $trace->get_buffer());
 327  
 328          $trace = new progress_trace_buffer(new html_progress_trace(), false);
 329          $trace->output('do');
 330          $trace->output('re', 1);
 331          $trace->output('mi', 2);
 332          $trace->finished();
 333          $this->assertSame("<p>do</p>\n<p>&#160;&#160;re</p>\n<p>&#160;&#160;&#160;&#160;mi</p>\n", $trace->get_buffer());
 334          $this->assertSame("<p>do</p>\n<p>&#160;&#160;re</p>\n<p>&#160;&#160;&#160;&#160;mi</p>\n", $trace->get_buffer());
 335          $trace->reset_buffer();
 336          $this->assertSame('', $trace->get_buffer());
 337          $this->expectOutputString('');
 338      }
 339  
 340      public function test_combined_progres_trace() {
 341          $this->resetAfterTest(false);
 342  
 343          $trace1 = new progress_trace_buffer(new html_progress_trace(), false);
 344          $trace2 = new progress_trace_buffer(new text_progress_trace(), false);
 345  
 346          $trace = new combined_progress_trace(array($trace1, $trace2));
 347          $trace->output('do');
 348          $trace->output('re', 1);
 349          $trace->output('mi', 2);
 350          $trace->finished();
 351          $this->assertSame("<p>do</p>\n<p>&#160;&#160;re</p>\n<p>&#160;&#160;&#160;&#160;mi</p>\n", $trace1->get_buffer());
 352          $this->assertSame("do\n  re\n    mi\n", $trace2->get_buffer());
 353          $this->expectOutputString('');
 354      }
 355  
 356      public function test_set_debugging() {
 357          global $CFG;
 358  
 359          $this->resetAfterTest();
 360  
 361          $this->assertEquals(DEBUG_DEVELOPER, $CFG->debug);
 362          $this->assertTrue($CFG->debugdeveloper);
 363          $this->assertNotEmpty($CFG->debugdisplay);
 364  
 365          set_debugging(DEBUG_DEVELOPER, true);
 366          $this->assertEquals(DEBUG_DEVELOPER, $CFG->debug);
 367          $this->assertTrue($CFG->debugdeveloper);
 368          $this->assertNotEmpty($CFG->debugdisplay);
 369  
 370          set_debugging(DEBUG_DEVELOPER, false);
 371          $this->assertEquals(DEBUG_DEVELOPER, $CFG->debug);
 372          $this->assertTrue($CFG->debugdeveloper);
 373          $this->assertEmpty($CFG->debugdisplay);
 374  
 375          set_debugging(-1);
 376          $this->assertEquals(-1, $CFG->debug);
 377          $this->assertTrue($CFG->debugdeveloper);
 378  
 379          set_debugging(DEBUG_ALL);
 380          $this->assertEquals(DEBUG_ALL, $CFG->debug);
 381          $this->assertFalse($CFG->debugdeveloper);
 382  
 383          set_debugging(DEBUG_NORMAL);
 384          $this->assertEquals(DEBUG_NORMAL, $CFG->debug);
 385          $this->assertFalse($CFG->debugdeveloper);
 386  
 387          set_debugging(DEBUG_MINIMAL);
 388          $this->assertEquals(DEBUG_MINIMAL, $CFG->debug);
 389          $this->assertFalse($CFG->debugdeveloper);
 390  
 391          set_debugging(DEBUG_NONE);
 392          $this->assertEquals(DEBUG_NONE, $CFG->debug);
 393          $this->assertFalse($CFG->debugdeveloper);
 394      }
 395  
 396      public function test_strip_pluginfile_content() {
 397          $source = <<<SOURCE
 398  Hello!
 399  
 400  I'm writing to you from the Moodle Majlis in Muscat, Oman, where we just had several days of Moodle community goodness.
 401  
 402  URL outside a tag: https://moodle.org/logo/logo-240x60.gif
 403  Plugin url outside a tag: @@PLUGINFILE@@/logo-240x60.gif
 404  
 405  External link 1:<img src='https://moodle.org/logo/logo-240x60.gif' alt='Moodle'/>
 406  External link 2:<img alt="Moodle" src="https://moodle.org/logo/logo-240x60.gif"/>
 407  Internal link 1:<img src='@@PLUGINFILE@@/logo-240x60.gif' alt='Moodle'/>
 408  Internal link 2:<img alt="Moodle" src="@@PLUGINFILE@@logo-240x60.gif"/>
 409  Anchor link 1:<a href="@@PLUGINFILE@@logo-240x60.gif" alt="bananas">Link text</a>
 410  Anchor link 2:<a title="bananas" href="../logo-240x60.gif">Link text</a>
 411  Anchor + ext. img:<a title="bananas" href="../logo-240x60.gif"><img alt="Moodle" src="@@PLUGINFILE@@logo-240x60.gif"/></a>
 412  Ext. anchor + img:<a href="@@PLUGINFILE@@logo-240x60.gif"><img alt="Moodle" src="https://moodle.org/logo/logo-240x60.gif"/></a>
 413  SOURCE;
 414          $expected = <<<EXPECTED
 415  Hello!
 416  
 417  I'm writing to you from the Moodle Majlis in Muscat, Oman, where we just had several days of Moodle community goodness.
 418  
 419  URL outside a tag: https://moodle.org/logo/logo-240x60.gif
 420  Plugin url outside a tag: @@PLUGINFILE@@/logo-240x60.gif
 421  
 422  External link 1:<img src="https://moodle.org/logo/logo-240x60.gif" alt="Moodle" />
 423  External link 2:<img alt="Moodle" src="https://moodle.org/logo/logo-240x60.gif" />
 424  Internal link 1:
 425  Internal link 2:
 426  Anchor link 1:Link text
 427  Anchor link 2:<a title="bananas" href="../logo-240x60.gif">Link text</a>
 428  Anchor + ext. img:<a title="bananas" href="../logo-240x60.gif"></a>
 429  Ext. anchor + img:<img alt="Moodle" src="https://moodle.org/logo/logo-240x60.gif" />
 430  EXPECTED;
 431          $this->assertSame($expected, strip_pluginfile_content($source));
 432      }
 433  
 434      public function test_purify_html_ruby() {
 435  
 436          $this->resetAfterTest();
 437  
 438          $ruby =
 439              "<p><ruby><rb>京都</rb><rp>(</rp><rt>きょうと</rt><rp>)</rp></ruby>は" .
 440              "<ruby><rb>日本</rb><rp>(</rp><rt>にほん</rt><rp>)</rp></ruby>の" .
 441              "<ruby><rb>都</rb><rp>(</rp><rt>みやこ</rt><rp>)</rp></ruby>です。</p>";
 442          $illegal = '<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>';
 443  
 444          $cleaned = purify_html($ruby . $illegal);
 445          $this->assertEquals($ruby, $cleaned);
 446  
 447      }
 448  
 449      /**
 450       * Tests for content_to_text.
 451       *
 452       * @param string    $content   The content
 453       * @param int|false $format    The content format
 454       * @param string    $expected  Expected value
 455       * @dataProvider provider_content_to_text
 456       */
 457      public function test_content_to_text($content, $format, $expected) {
 458          $content = content_to_text($content, $format);
 459          $this->assertEquals($expected, $content);
 460      }
 461  
 462      /**
 463       * Data provider for test_content_to_text.
 464       */
 465      public static function provider_content_to_text() {
 466          return array(
 467              array('asd', false, 'asd'),
 468              // Trim '\r\n '.
 469              array("Note that:\n\n3 > 1 ", FORMAT_PLAIN, "Note that:\n\n3 > 1"),
 470              array("Note that:\n\n3 > 1\r\n", FORMAT_PLAIN, "Note that:\n\n3 > 1"),
 471              // Multiple spaces to one.
 472              array('<span class="eheh">京都</span>  ->  hehe', FORMAT_HTML, '京都 -> hehe'),
 473              array('<span class="eheh">京都</span>  ->  hehe', false, '京都 -> hehe'),
 474              array('asd    asd', false, 'asd asd'),
 475              // From markdown to html and html to text.
 476              array('asd __lera__ con la', FORMAT_MARKDOWN, 'asd LERA con la'),
 477              // HTML to text.
 478              array('<p class="frogs">This is a <strong class=\'fishes\'>test</strong></p>', FORMAT_HTML, 'This is a TEST'),
 479              array("<span lang='en' class='multilang'>english</span>
 480  <span lang='ca' class='multilang'>català</span>
 481  <span lang='es' class='multilang'>español</span>
 482  <span lang='fr' class='multilang'>français</span>", FORMAT_HTML, "english català español français")
 483          );
 484      }
 485  
 486      /**
 487       * Data provider for validate_email() function.
 488       *
 489       * @return array Returns aray of test data for the test_validate_email function
 490       */
 491      public function data_validate_email() {
 492          return [
 493              // Test addresses that should pass.
 494              [
 495                  'email' => 'moodle@example.com',
 496                  'result' => true
 497              ],
 498              [
 499                  'email' => 'moodle@localhost.local',
 500                  'result' => true
 501              ],
 502              [
 503                  'email' => 'verp_email+is=mighty@moodle.org',
 504                  'result' => true
 505              ],
 506              [
 507                  'email' => "but_potentially'dangerous'too@example.org",
 508                  'result' => true
 509              ],
 510              [
 511                  'email' => 'posts+AAAAAAAAAAIAAAAAAAAGQQAAAAABFSXz1eM/P/lR2bYyljM+@posts.moodle.org',
 512                  'result' => true
 513              ],
 514  
 515              // Test addresses that should NOT pass.
 516              [
 517                  'email' => 'moodle@localhost',
 518                  'result' => false
 519              ],
 520              [
 521                  'email' => '"attacker\\" -oQ/tmp/ -X/var/www/vhost/moodle/backdoor.php  some"@email.com',
 522                  'result' => false
 523              ],
 524              [
 525                  'email' => "moodle@example.com>\r\nRCPT TO:<victim@example.com",
 526                  'result' => false
 527              ],
 528              [
 529                  'email' => 'greater>than@example.com',
 530                  'result' => false
 531              ],
 532              [
 533                  'email' => 'less<than@example.com',
 534                  'result' => false
 535              ],
 536              [
 537                  'email' => '"this<is>validbutwerejectit"@example.com',
 538                  'result' => false
 539              ],
 540  
 541              // Extra email addresses from Wikipedia page on Email Addresses.
 542              // Valid.
 543              [
 544                  'email' => 'simple@example.com',
 545                  'result' => true
 546              ],
 547              [
 548                  'email' => 'very.common@example.com',
 549                  'result' => true
 550              ],
 551              [
 552                  'email' => 'disposable.style.email.with+symbol@example.com',
 553                  'result' => true
 554              ],
 555              [
 556                  'email' => 'other.email-with-hyphen@example.com',
 557                  'result' => true
 558              ],
 559              [
 560                  'email' => 'fully-qualified-domain@example.com',
 561                  'result' => true
 562              ],
 563              [
 564                  'email' => 'user.name+tag+sorting@example.com',
 565                  'result' => true
 566              ],
 567              // One-letter local-part.
 568              [
 569                  'email' => 'x@example.com',
 570                  'result' => true
 571              ],
 572              [
 573                  'email' => 'example-indeed@strange-example.com',
 574                  'result' => true
 575              ],
 576              // See the List of Internet top-level domains.
 577              [
 578                  'email' => 'example@s.example',
 579                  'result' => true
 580              ],
 581              // Quoted double dot.
 582              [
 583                  'email' => '"john..doe"@example.org',
 584                  'result' => true
 585              ],
 586  
 587              // Invalid.
 588              // No @ character.
 589              [
 590                  'email' => 'Abc.example.com',
 591                  'result' => false
 592              ],
 593              // Only one @ is allowed outside quotation marks.
 594              [
 595                  'email' => 'A@b@c@example.com',
 596                  'result' => false
 597              ],
 598              // None of the special characters in this local-part are allowed outside quotation marks.
 599              [
 600                  'email' => 'a"b(c)d,e:f;g<h>i[j\k]l@example.com',
 601                  'result' => false
 602              ],
 603              // Quoted strings must be dot separated or the only element making up the local-part.
 604              [
 605                  'email' => 'just"not"right@example.com',
 606                  'result' => false
 607              ],
 608              // Spaces, quotes, and backslashes may only exist when within quoted strings and preceded by a backslash.
 609              [
 610                  'email' => 'this is"not\allowed@example.com',
 611                  'result' => false
 612              ],
 613              // Even if escaped (preceded by a backslash), spaces, quotes, and backslashes must still be contained by quotes.
 614              [
 615                  'email' => 'this\ still\"not\\allowed@example.com',
 616                  'result' => false
 617              ],
 618              // Local part is longer than 64 characters.
 619              [
 620                  'email' => '1234567890123456789012345678901234567890123456789012345678901234+x@example.com',
 621                  'result' => false
 622              ],
 623          ];
 624      }
 625  
 626      /**
 627       * Tests valid and invalid email address using the validate_email() function.
 628       *
 629       * @param string $email the email address to test
 630       * @param boolean $result Expected result (true or false)
 631       * @dataProvider    data_validate_email
 632       */
 633      public function test_validate_email($email, $result) {
 634          if ($result) {
 635              $this->assertTrue(validate_email($email));
 636          } else {
 637              $this->assertFalse(validate_email($email));
 638          }
 639      }
 640  
 641      /**
 642       * Data provider for test_get_file_argument.
 643       */
 644      public static function provider_get_file_argument() {
 645          return array(
 646              // Serving SCORM content w/o HTTP GET params.
 647              array(array(
 648                      'SERVER_SOFTWARE' => 'Apache',
 649                      'SERVER_PORT' => '80',
 650                      'REQUEST_METHOD' => 'GET',
 651                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html',
 652                      'SCRIPT_NAME' => '/pluginfile.php',
 653                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 654                  ), 0, '/3854/mod_scorm/content/1/swf.html'),
 655              array(array(
 656                      'SERVER_SOFTWARE' => 'Apache',
 657                      'SERVER_PORT' => '80',
 658                      'REQUEST_METHOD' => 'GET',
 659                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html',
 660                      'SCRIPT_NAME' => '/pluginfile.php',
 661                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 662                  ), 1, '/3854/mod_scorm/content/1/swf.html'),
 663              // Serving SCORM content w/ HTTP GET 'file' as first param.
 664              array(array(
 665                      'SERVER_SOFTWARE' => 'Apache',
 666                      'SERVER_PORT' => '80',
 667                      'REQUEST_METHOD' => 'GET',
 668                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html?file=video_.swf',
 669                      'SCRIPT_NAME' => '/pluginfile.php',
 670                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 671                  ), 0, '/3854/mod_scorm/content/1/swf.html'),
 672              array(array(
 673                      'SERVER_SOFTWARE' => 'Apache',
 674                      'SERVER_PORT' => '80',
 675                      'REQUEST_METHOD' => 'GET',
 676                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html?file=video_.swf',
 677                      'SCRIPT_NAME' => '/pluginfile.php',
 678                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 679                  ), 1, '/3854/mod_scorm/content/1/swf.html'),
 680              // Serving SCORM content w/ HTTP GET 'file' not as first param.
 681              array(array(
 682                      'SERVER_SOFTWARE' => 'Apache',
 683                      'SERVER_PORT' => '80',
 684                      'REQUEST_METHOD' => 'GET',
 685                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html?foo=bar&file=video_.swf',
 686                      'SCRIPT_NAME' => '/pluginfile.php',
 687                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 688                  ), 0, '/3854/mod_scorm/content/1/swf.html'),
 689              array(array(
 690                      'SERVER_SOFTWARE' => 'Apache',
 691                      'SERVER_PORT' => '80',
 692                      'REQUEST_METHOD' => 'GET',
 693                      'REQUEST_URI' => '/pluginfile.php/3854/mod_scorm/content/1/swf.html?foo=bar&file=video_.swf',
 694                      'SCRIPT_NAME' => '/pluginfile.php',
 695                      'PATH_INFO' => '/3854/mod_scorm/content/1/swf.html',
 696                  ), 1, '/3854/mod_scorm/content/1/swf.html'),
 697              // Serving content from a generic activity w/ HTTP GET 'file', still forcing slash arguments.
 698              array(array(
 699                      'SERVER_SOFTWARE' => 'Apache',
 700                      'SERVER_PORT' => '80',
 701                      'REQUEST_METHOD' => 'GET',
 702                      'REQUEST_URI' => '/pluginfile.php/3854/whatever/content/1/swf.html?file=video_.swf',
 703                      'SCRIPT_NAME' => '/pluginfile.php',
 704                      'PATH_INFO' => '/3854/whatever/content/1/swf.html',
 705                  ), 0, '/3854/whatever/content/1/swf.html'),
 706              array(array(
 707                      'SERVER_SOFTWARE' => 'Apache',
 708                      'SERVER_PORT' => '80',
 709                      'REQUEST_METHOD' => 'GET',
 710                      'REQUEST_URI' => '/pluginfile.php/3854/whatever/content/1/swf.html?file=video_.swf',
 711                      'SCRIPT_NAME' => '/pluginfile.php',
 712                      'PATH_INFO' => '/3854/whatever/content/1/swf.html',
 713                  ), 1, '/3854/whatever/content/1/swf.html'),
 714              // Serving content from a generic activity w/ HTTP GET 'file', still forcing slash arguments (edge case).
 715              array(array(
 716                      'SERVER_SOFTWARE' => 'Apache',
 717                      'SERVER_PORT' => '80',
 718                      'REQUEST_METHOD' => 'GET',
 719                      'REQUEST_URI' => '/pluginfile.php/?file=video_.swf',
 720                      'SCRIPT_NAME' => '/pluginfile.php',
 721                      'PATH_INFO' => '/',
 722                  ), 0, 'video_.swf'),
 723              array(array(
 724                      'SERVER_SOFTWARE' => 'Apache',
 725                      'SERVER_PORT' => '80',
 726                      'REQUEST_METHOD' => 'GET',
 727                      'REQUEST_URI' => '/pluginfile.php/?file=video_.swf',
 728                      'SCRIPT_NAME' => '/pluginfile.php',
 729                      'PATH_INFO' => '/',
 730                  ), 1, 'video_.swf'),
 731              // Serving content from a generic activity w/ HTTP GET 'file', w/o forcing slash arguments.
 732              array(array(
 733                      'SERVER_SOFTWARE' => 'Apache',
 734                      'SERVER_PORT' => '80',
 735                      'REQUEST_METHOD' => 'GET',
 736                      'REQUEST_URI' => '/pluginfile.php?file=%2F3854%2Fwhatever%2Fcontent%2F1%2Fswf.html%3Ffile%3Dvideo_.swf',
 737                      'SCRIPT_NAME' => '/pluginfile.php',
 738                  ), 0, '/3854/whatever/content/1/swf.html?file=video_.swf'),
 739              array(array(
 740                      'SERVER_SOFTWARE' => 'Apache',
 741                      'SERVER_PORT' => '80',
 742                      'REQUEST_METHOD' => 'GET',
 743                      'REQUEST_URI' => '/pluginfile.php?file=%2F3854%2Fwhatever%2Fcontent%2F1%2Fswf.html%3Ffile%3Dvideo_.swf',
 744                      'SCRIPT_NAME' => '/pluginfile.php',
 745                  ), 1, '/3854/whatever/content/1/swf.html?file=video_.swf'),
 746          );
 747      }
 748  
 749      /**
 750       * Tests for get_file_argument() function.
 751       *
 752       * @param array $server mockup for $_SERVER.
 753       * @param string $cfgslasharguments slasharguments setting.
 754       * @param string|false $expected Expected value.
 755       * @dataProvider provider_get_file_argument
 756       */
 757      public function test_get_file_argument($server, $cfgslasharguments, $expected) {
 758          global $CFG;
 759  
 760          // Overwrite the related settings.
 761          $currentsetting = $CFG->slasharguments;
 762          $CFG->slasharguments = $cfgslasharguments;
 763          // Mock global $_SERVER.
 764          $currentserver = isset($_SERVER) ? $_SERVER : null;
 765          $_SERVER = $server;
 766          initialise_fullme();
 767          if ($_SERVER['REQUEST_METHOD'] !== 'GET') {
 768              $this->fail('Only HTTP GET mocked request allowed.');
 769          }
 770          if (empty($_SERVER['REQUEST_URI'])) {
 771              $this->fail('Invalid HTTP GET mocked request.');
 772          }
 773          // Mock global $_GET.
 774          $currentget = isset($_GET) ? $_GET : null;
 775          $_GET = array();
 776          $querystring = parse_url($_SERVER['REQUEST_URI'], PHP_URL_QUERY);
 777          if (!empty($querystring)) {
 778              $_SERVER['QUERY_STRING'] = $querystring;
 779              parse_str($querystring, $_GET);
 780          }
 781  
 782          $this->assertEquals($expected, get_file_argument());
 783  
 784          // Restore the current settings and global values.
 785          $CFG->slasharguments = $currentsetting;
 786          if (is_null($currentserver)) {
 787              unset($_SERVER);
 788          } else {
 789              $_SERVER = $currentserver;
 790          }
 791          if (is_null($currentget)) {
 792              unset($_GET);
 793          } else {
 794              $_GET = $currentget;
 795          }
 796      }
 797  
 798      /**
 799       * Tests for extract_draft_file_urls_from_text() function.
 800       */
 801      public function test_extract_draft_file_urls_from_text() {
 802          global $CFG;
 803  
 804          $url1 = "{$CFG->wwwroot}/draftfile.php/5/user/draft/99999999/test1.jpg";
 805          $url2 = "{$CFG->wwwroot}/draftfile.php/5/user/draft/99999998/test2.jpg";
 806  
 807          $html = "<p>This is a test.</p><p><img src=\"$url1}\" alt=\"\" role=\"presentation\"></p>
 808                  <br>Test content.<p></p><p><img src=\"{$url2}\" alt=\"\" width=\"2048\" height=\"1536\"
 809                  role=\"presentation\" class=\"img-responsive atto_image_button_text-bottom\"><br></p>";
 810          $draftareas = array(
 811              array(
 812                  'urlbase' => 'draftfile.php',
 813                  'contextid' => '5',
 814                  'component' => 'user',
 815                  'filearea' => 'draft',
 816                  'itemid' => '99999999',
 817                  'filename' => 'test1.jpg',
 818                  0 => "{$CFG->wwwroot}/draftfile.php/5/user/draft/99999999/test1.jpg",
 819                  1 => 'draftfile.php',
 820                  2 => '5',
 821                  3 => 'user',
 822                  4 => 'draft',
 823                  5 => '99999999',
 824                  6 => 'test1.jpg'
 825              ),
 826              array(
 827                  'urlbase' => 'draftfile.php',
 828                  'contextid' => '5',
 829                  'component' => 'user',
 830                  'filearea' => 'draft',
 831                  'itemid' => '99999998',
 832                  'filename' => 'test2.jpg',
 833                  0 => "{$CFG->wwwroot}/draftfile.php/5/user/draft/99999998/test2.jpg",
 834                  1 => 'draftfile.php',
 835                  2 => '5',
 836                  3 => 'user',
 837                  4 => 'draft',
 838                  5 => '99999998',
 839                  6 => 'test2.jpg'
 840              )
 841          );
 842          $extracteddraftareas = extract_draft_file_urls_from_text($html, false, 5, 'user', 'draft');
 843          $this->assertEquals($draftareas, $extracteddraftareas);
 844      }
 845  
 846      public function test_print_password_policy() {
 847          $this->resetAfterTest(true);
 848          global $CFG;
 849  
 850          $policydisabled = '';
 851  
 852          // Set password policy to disabled.
 853          $CFG->passwordpolicy = false;
 854  
 855          // Check for empty response.
 856          $this->assertEquals($policydisabled, print_password_policy());
 857  
 858          // Now set the policy to enabled with every control disabled.
 859          $CFG->passwordpolicy = true;
 860          $CFG->minpasswordlength = 0;
 861          $CFG->minpassworddigits = 0;
 862          $CFG->minpasswordlower = 0;
 863          $CFG->minpasswordupper = 0;
 864          $CFG->minpasswordnonalphanum = 0;
 865          $CFG->maxconsecutiveidentchars = 0;
 866  
 867          // Check for empty response.
 868          $this->assertEquals($policydisabled, print_password_policy());
 869  
 870          // Now enable some controls, and check that the policy responds with policy text.
 871          $CFG->minpasswordlength = 8;
 872          $CFG->minpassworddigits = 1;
 873          $CFG->minpasswordlower = 1;
 874          $CFG->minpasswordupper = 1;
 875          $CFG->minpasswordnonalphanum = 1;
 876          $CFG->maxconsecutiveidentchars = 1;
 877  
 878          $this->assertNotEquals($policydisabled, print_password_policy());
 879      }
 880  }