/**
* Tests the url_appears_valid_url function
* @return void
*/
public function test_url_appears_valid_url()
{
$this->assertTrue(url_appears_valid_url('http://example'));
$this->assertTrue(url_appears_valid_url('http://www.example.com'));
$this->assertTrue(url_appears_valid_url('http://www.exa-mple2.com'));
$this->assertTrue(url_appears_valid_url('http://www.example.com/~nobody/index.html'));
$this->assertTrue(url_appears_valid_url('http://www.example.com#hmm'));
$this->assertTrue(url_appears_valid_url('http://www.example.com/#hmm'));
$this->assertTrue(url_appears_valid_url('http://www.example.com/žlutý koníček/lala.txt'));
$this->assertTrue(url_appears_valid_url('http://www.example.com/žlutý koníček/lala.txt#hmmmm'));
$this->assertTrue(url_appears_valid_url('http://www.example.com/index.php?xx=yy&zz=aa'));
$this->assertTrue(url_appears_valid_url('https://*****:*****@www.example.com/žlutý koníček/lala.txt'));
$this->assertTrue(url_appears_valid_url('ftp://*****:*****@www.example.com/žlutý koníček/lala.txt'));
$this->assertFalse(url_appears_valid_url('http:example.com'));
$this->assertFalse(url_appears_valid_url('http:/example.com'));
$this->assertFalse(url_appears_valid_url('http://'));
$this->assertFalse(url_appears_valid_url('http://www.exa mple.com'));
$this->assertFalse(url_appears_valid_url('http://www.examplé.com'));
$this->assertFalse(url_appears_valid_url('http://@www.example.com'));
$this->assertFalse(url_appears_valid_url('http://user:@www.example.com'));
$this->assertTrue(url_appears_valid_url('lalala://@:@/'));
}
function validation($data, $files)
{
$errors = parent::validation($data, $files);
// Validating Entered url, we are looking for obvious problems only,
// teachers are responsible for testing if it actually works.
// This is not a security validation!! Teachers are allowed to enter "javascript:alert(666)" for example.
// NOTE: do not try to explain the difference between URL and URI, people would be only confused...
if (empty($data['externalurl'])) {
$errors['externalurl'] = get_string('required');
} else {
$url = trim($data['externalurl']);
if (empty($url)) {
$errors['externalurl'] = get_string('required');
} else {
if (preg_match('|^/|', $url)) {
// links relative to server root are ok - no validation necessary
} else {
if (preg_match('|^[a-z]+://|i', $url) or preg_match('|^https?:|i', $url) or preg_match('|^ftp:|i', $url)) {
// normal URL
if (!url_appears_valid_url($url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
} else {
if (preg_match('|^[a-z]+:|i', $url)) {
// general URI such as teamspeak, mailto, etc. - it may or may not work in all browsers,
// we do not validate these at all, sorry
} else {
// invalid URI, we try to fix it by adding 'http://' prefix,
// relative links are NOT allowed because we display the link on different pages!
if (!url_appears_valid_url('http://' . $url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
}
}
}
}
}
return $errors;
}
public function validation($data, $files)
{
global $CFG;
$errors = parent::validation($data, $files);
$info = isset($data['content']) ? file_get_draft_area_info($data['content']) : array('filecount' => 0);
$url = isset($data['externalurl']) ? trim($data['externalurl']) : '';
if (empty($data['externalurl']) && $info['filecount'] == 0 && empty($data['objectid'])) {
$errors['filecheck'] = get_string('required');
} else {
if (!empty($url)) {
if (preg_match('|^/|', $url)) {
// Links relative to server root are ok - no validation necessary.
} else {
if (preg_match('|^[a-z]+://|i', $url) or preg_match('|^https?:|i', $url) or preg_match('|^ftp:|i', $url)) {
// Normal URL.
if (!mediagallery_appears_valid_url($url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
} else {
if (preg_match('|^[a-z]+:|i', $url)) {
// General URI such as teamspeak, mailto, etc. - it may or may not work in all browsers.
// We do not validate these at all, sorry.
} else {
// Invalid URI, we try to fix it by adding 'http://' prefix.
// Relative links are NOT allowed because we display the link on different pages!
require_once $CFG->dirroot . "/mod/url/locallib.php";
if (!url_appears_valid_url('http://' . $url)) {
$errors['externalurl'] = get_string('invalidurl', 'url');
}
}
}
}
}
}
return $errors;
}
