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Set generous HTTP feature policy #114

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Set generous HTTP feature policy #114

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a02a76c
Set generous HTTP feature policy
otacke Jun 18, 2020
d07c68c
Merge branch 'master' into add-http-feature-policy
otacke Sep 1, 2020
9851e4d
Merge branch 'master' into add-http-feature-policy
otacke Apr 14, 2021
cbbe55a
Allow iframe content to write to clipboard
otacke Mar 30, 2022
ea0e34a
Add permission policy to embed code
otacke Apr 1, 2022
3ee6294
Make $h5p_http_feature_policy become an array that can be overridden …
kelvin-xu May 11, 2022
cdee4fd
Add type check just to be safe
kelvin-xu May 11, 2022
c1a5413
Merge pull request #1 from kelvin-xu/add-http-feature-policy
otacke May 12, 2022
388f964
Merge branch 'master' into add-http-feature-policy
otacke Mar 23, 2026
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45 changes: 43 additions & 2 deletions public/class-h5p-plugin.php
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,23 @@ class H5P_Plugin {
*/
protected static $settings = null;

/**
* Default settings for HTTP Feature Policy.
*
* @var string
*/
protected static $h5p_http_feature_policy = array(
'accelerometer' => '*',
'autoplay' => '*',
'camera' => '*',
'clipboard-write' => '*',
'fullscreen' => '*',
'geolocation' => '*',
'gyroscope' => '*',
'magnetometer' => '*',
'microphone' => '*'
);

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@kelvin-xu kelvin-xu May 9, 2022

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It would be great if you can implement this with associative arrays that apply with a WordPress filter. Then generate the string based on the after-filtered associative array. It would give developers more flexibility to enable/disable permissions based on their site/platform.

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@otacke otacke May 9, 2022

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@kelvin-xu You're welcome to amend my pull request by sending me one of your own.

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@kelvin-xu kelvin-xu May 9, 2022

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Will do, thanks

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@kelvin-xu kelvin-xu May 11, 2022

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PR has been created for review. Thanks.

/**
* Initialize the plugin by setting localization and loading public scripts
* and styles.
Expand Down Expand Up @@ -1006,6 +1023,25 @@ public function shortcode($atts) {
return $this->add_assets($content);
}

/**
* Get permission policy property.
*
* @return string Permission policy.
*/
public function get_http_feature_policy_property() {
// Set HTTP feature policy attribute
$h5p_http_feature_policy_list = apply_filters( 'h5p_h5p_http_feature_policy', defined( 'H5P_HTTP_FEATURE_POLICY' ) && H5P_HTTP_FEATURE_POLICY ? H5P_HTTP_FEATURE_POLICY : self::$h5p_http_feature_policy );

array_walk(
$h5p_http_feature_policy_list,
function( &$feature_policy_value, $feature_policy_name ) {
$feature_policy_value = $feature_policy_name . ' \'' . $feature_policy_value . '\'';
}
);

return is_array( $h5p_http_feature_policy_list ) && 0 === count( $h5p_http_feature_policy_list ) ? '' : 'allow="' . implode( ';', $h5p_http_feature_policy_list ) . '"';
}

/**
* Get settings for given content
*
Expand Down Expand Up @@ -1050,13 +1086,15 @@ public function get_content_settings($content) {
: ''
);

$h5p_http_feature_policy = $this->get_http_feature_policy_property();

// Add JavaScript settings for this content
$settings = array(
'library' => H5PCore::libraryToString($content['library']),
'jsonContent' => $safe_parameters,
'fullScreen' => $content['library']['fullscreen'],
'exportUrl' => get_option('h5p_export', TRUE) ? $this->get_h5p_url() . '/exports/' . ($content['slug'] ? $content['slug'] . '-' : '') . $content['id'] . '.h5p' : '',
'embedCode' => '<iframe src="' . admin_url('admin-ajax.php?action=h5p_embed&id=' . $content['id']) . '" width=":w" height=":h" frameborder="0" allowfullscreen="allowfullscreen" title="' . esc_attr($title) . '"></iframe>',
'embedCode' => '<iframe src="' . admin_url('admin-ajax.php?action=h5p_embed&id=' . $content['id']) . '" width=":w" height=":h" frameborder="0" allowfullscreen="allowfullscreen" title="' . esc_attr($title) . '"' . ' ' . esc_attr($h5p_http_feature_policy) . '></iframe>',
'resizeCode' => '<script src="' . plugins_url('h5p/h5p-php-library/js/h5p-resizer.js') . '" charset="UTF-8"></script>',
'url' => admin_url('admin-ajax.php?action=h5p_embed&id=' . $content['id']),
'title' => $content['title'],
Expand Down Expand Up @@ -1150,13 +1188,16 @@ public function add_assets($content, $no_cache = FALSE) {
$h5p_content_wrapper = '<div class="h5p-content" data-content-id="' . $content['id'] . '"></div>';
}
else {
$h5p_http_feature_policy = $this->get_http_feature_policy_property();

$title = isset($content['metadata']['a11yTitle'])
? $content['metadata']['a11yTitle']
: (isset($content['metadata']['title'])
? $content['metadata']['title']
: ''
);
$h5p_content_wrapper = '<div class="h5p-iframe-wrapper"><iframe id="h5p-iframe-' . $content['id'] . '" class="h5p-iframe" data-content-id="' . $content['id'] . '" style="height:1px" src="about:blank" frameBorder="0" scrolling="no" title="' . esc_attr($title) . '"></iframe></div>';

$h5p_content_wrapper = '<div class="h5p-iframe-wrapper"><iframe id="h5p-iframe-' . $content['id'] . '" class="h5p-iframe" data-content-id="' . $content['id'] . '" style="height:1px" src="about:blank" frameBorder="0" scrolling="no" title="' . esc_attr($title) . '"' . ' ' . esc_attr($h5p_http_feature_policy) . '></iframe></div>';
}

return apply_filters('print_h5p_content', $h5p_content_wrapper, $content);
Expand Down