5 * Description: Collapse posts with inappropriate content
7 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
10 use Friendica\Core\Hook;
13 function nsfw_install()
15 Hook::register('prepare_body_content_filter', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body_content_filter', 10);
16 Hook::register('addon_settings', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings');
17 Hook::register('addon_settings_post', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings_post');
20 function nsfw_uninstall()
22 Hook::unregister('prepare_body_content_filter', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body_content_filter');
23 Hook::unregister('prepare_body', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body');
24 Hook::unregister('addon_settings', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings');
25 Hook::unregister('addon_settings_post', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings_post');
28 // This function isn't perfect and isn't trying to preserve the html structure - it's just a
29 // quick and dirty filter to pull out embedded photo blobs because 'nsfw' seems to come up
30 // inside them quite often. We don't need anything fancy, just pull out the data blob so we can
31 // check against the rest of the body.
33 function nsfw_extract_photos($body)
37 $img_start = strpos($body, 'src="data:');
38 $img_end = (($img_start !== false) ? strpos(substr($body, $img_start), '>') : false);
42 while ($img_end !== false) {
43 $img_end += $img_start;
44 $new_body = $new_body . substr($body, 0, $img_start);
47 $body = substr($body, 0, $img_end);
49 $img_start = strpos($body, 'src="data:');
50 $img_end = (($img_start !== false) ? strpos(substr($body, $img_start), '>') : false);
59 function nsfw_addon_settings(&$a, &$s)
65 /* Add our stylesheet to the page so we can make our settings look nice */
67 DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . DI::baseUrl()->get() . '/addon/nsfw/nsfw.css' . '" media="all" />' . "\r\n";
69 $enable_checked = (intval(DI::pConfig()->get(local_user(), 'nsfw', 'disable')) ? '' : ' checked="checked" ');
70 $words = DI::pConfig()->get(local_user(), 'nsfw', 'words');
75 $s .= '<span id="settings_nsfw_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_nsfw_expanded\'); openClose(\'settings_nsfw_inflated\');">';
76 $s .= '<h3>' . DI::l10n()->t('Content Filter (NSFW and more)') . '</h3>';
78 $s .= '<div id="settings_nsfw_expanded" class="settings-block" style="display: none;">';
79 $s .= '<span class="fakelink" onclick="openClose(\'settings_nsfw_expanded\'); openClose(\'settings_nsfw_inflated\');">';
80 $s .= '<h3>' . DI::l10n()->t('Content Filter (NSFW and more)') . '</h3>';
83 $s .= '<div id="nsfw-wrapper">';
84 $s .= '<p>' . DI::l10n()->t('This addon searches for specified words/text in posts and collapses them. It can be used to filter content tagged with for instance #NSFW that may be deemed inappropriate at certain times or places, such as being at work. It is also useful for hiding irrelevant or annoying content from direct view.') . '</p>';
85 $s .= '<label id="nsfw-enable-label" for="nsfw-enable">' . DI::l10n()->t('Enable Content filter') . ' </label>';
86 $s .= '<input id="nsfw-enable" type="checkbox" name="nsfw-enable" value="1"' . $enable_checked . ' />';
87 $s .= '<div class="clear"></div>';
88 $s .= '<label id="nsfw-label" for="nsfw-words">' . DI::l10n()->t('Comma separated list of keywords to hide') . ' </label>';
89 $s .= '<textarea id="nsfw-words" type="text" name="nsfw-words">' . $words . '</textarea>';
90 $s .= '</div><div class="clear"></div>';
92 $s .= '<div class="settings-submit-wrapper" ><input type="submit" id="nsfw-submit" name="nsfw-submit" class="settings-submit" value="' . DI::l10n()->t('Save Settings') . '" /></div>';
93 $s .= '<div class="nsfw-desc">' . DI::l10n()->t('Use /expression/ to provide regular expressions') . '</div></div>';
97 function nsfw_addon_settings_post(&$a, &$b)
103 if (!empty($_POST['nsfw-submit'])) {
104 DI::pConfig()->set(local_user(), 'nsfw', 'words', trim($_POST['nsfw-words']));
105 $enable = (!empty($_POST['nsfw-enable']) ? intval($_POST['nsfw-enable']) : 0);
106 $disable = 1 - $enable;
107 DI::pConfig()->set(local_user(), 'nsfw', 'disable', $disable);
108 info(DI::l10n()->t('NSFW Settings saved.') . EOL);
112 function nsfw_prepare_body_content_filter(\Friendica\App $a, &$hook_data)
115 if (DI::pConfig()->get(local_user(), 'nsfw', 'disable')) {
120 $words = DI::pConfig()->get(local_user(), 'nsfw', 'words');
124 $word_list = explode(',', $words);
126 $word_list = ['nsfw'];
130 if (count($word_list)) {
131 $body = $hook_data['item']['title'] . "\n" . nsfw_extract_photos($hook_data['item']['body']);
133 foreach ($word_list as $word) {
135 if (!strlen($word)) {
141 case '/'; // Regular expression
142 $found = preg_match($word, $body);
144 case '#': // Hashtag-only search
146 $found = nsfw_find_word_in_item_tags($hook_data['item']['hashtags'], substr($word, 1));
149 $found = stripos($body, $word) !== false || nsfw_find_word_in_item_tags($hook_data['item']['tags'], $word);
161 $hook_data['filter_reasons'][] = DI::l10n()->t('Filtered tag: %s', $word);
163 $hook_data['filter_reasons'][] = DI::l10n()->t('Filtered word: %s', $word);
168 function nsfw_find_word_in_item_tags($item_tags, $word)
170 if (is_array($item_tags)) {
171 foreach ($item_tags as $tag) {
172 if (stripos($tag, '>' . $word . '<') !== false) {