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MDL-71187 quizaccess_seb: Change "Launch Safe Exam Browser" to a href.

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In order to allow for correct seb:// or sebs:// calls without browser
warnings of insecure links, it is not possible to send a get request
with an attached cmid parameter to the unknown seb:// or sebs://
URL via a form button.
We've got to use a <a href> link outside a form to circumvent
browsers warning of an insecure link and call Safe Exam Browser
correctly.
This commit is contained in:
Luca Bösch 2021-05-05 00:18:22 +02:00
parent 1c9837a557
commit 21503ed5e6
1 changed files with 14 additions and 6 deletions
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20
mod/quiz/accessrule/seb/rule.php
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@ -530,11 +530,15 @@ class quizaccess_seb extends quiz_access_rule_base {
* @return string A link to launch Safe Exam Browser.
*/
private function get_launch_seb_button() : string {
global $OUTPUT;
// Rendering as a href and not as button in a form to circumvent browser warnings for sending to URL with unknown protocol.
$seblink = \quizaccess_seb\link_generator::get_link($this->quiz->cmid, true, is_https());
return $OUTPUT->single_button($seblink, get_string('seblinkbutton', 'quizaccess_seb'), 'get');
$buttonlink = html_writer::start_tag('div', array('class' => 'singlebutton'));
$buttonlink .= html_writer::link($seblink, get_string('seblinkbutton', 'quizaccess_seb'),
['class' => 'btn btn-secondary', 'title' => get_string('seblinkbutton', 'quizaccess_seb')]);
$buttonlink .= html_writer::end_tag('div');
return $buttonlink;
}
/**
@ -543,11 +547,15 @@ class quizaccess_seb extends quiz_access_rule_base {
* @return string A link to launch Safe Exam Browser.
*/
private function get_download_config_button() : string {
global $OUTPUT;
// Rendering as a href and not as button in a form to circumvent browser warnings for sending to URL with unknown protocol.
$httplink = \quizaccess_seb\link_generator::get_link($this->quiz->cmid, false, is_https());
return $OUTPUT->single_button($httplink, get_string('httplinkbutton', 'quizaccess_seb'), 'get');
$buttonlink = html_writer::start_tag('div', array('class' => 'singlebutton'));
$buttonlink .= html_writer::link($httplink, get_string('httplinkbutton', 'quizaccess_seb'),
['class' => 'btn btn-secondary', 'title' => get_string('httplinkbutton', 'quizaccess_seb')]);
$buttonlink .= html_writer::end_tag('div');
return $buttonlink;
}
/**