5 * Description: Collapse posts with inappropriate content
7 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
10 use Friendica\Core\Addon;
11 use Friendica\Core\L10n;
12 use Friendica\Core\PConfig;
14 function nsfw_install()
16 Addon::registerHook('prepare_body', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body', 10);
17 Addon::registerHook('addon_settings', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings');
18 Addon::registerHook('addon_settings_post', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings_post');
21 function nsfw_uninstall()
23 Addon::unregisterHook('prepare_body', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body');
24 Addon::unregisterHook('addon_settings', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings');
25 Addon::unregisterHook('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 $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . $a->get_baseurl() . '/addon/nsfw/nsfw.css' . '" media="all" />' . "\r\n";
69 $enable_checked = (intval(PConfig::get(local_user(), 'nsfw', 'disable')) ? '' : ' checked="checked" ');
70 $words = 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>' . 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>' . L10n::t('Content Filter (NSFW and more)') . '</h3>';
83 $s .= '<div id="nsfw-wrapper">';
84 $s .= '<p>' . 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">' . 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">' . 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="' . L10n::t('Save Settings') . '" /></div>';
93 $s .= '<div class="nsfw-desc">' . L10n::t('Use /expression/ to provide regular expressions') . '</div></div>';
97 function nsfw_addon_settings_post(&$a, &$b)
103 if ($_POST['nsfw-submit']) {
104 PConfig::set(local_user(), 'nsfw', 'words', trim($_POST['nsfw-words']));
105 $enable = (x($_POST, 'nsfw-enable') ? intval($_POST['nsfw-enable']) : 0);
106 $disable = 1 - $enable;
107 PConfig::set(local_user(), 'nsfw', 'disable', $disable);
108 info(L10n::t('NSFW Settings saved.') . EOL);
112 function nsfw_prepare_body(Friendica\App $a, &$b)
114 // Don't do the check when there is a content warning
115 if (!empty($b['item']['content-warning'])) {
120 if (PConfig::get(local_user(), 'nsfw', 'disable')) {
125 $words = PConfig::get(local_user(), 'nsfw', 'words');
129 $word_list = explode(',', $words);
131 $word_list = ['nsfw'];
135 if (count($word_list)) {
136 $body = $b['item']['title'] . "\n" . nsfw_extract_photos($b['html']);
138 foreach ($word_list as $word) {
140 if (!strlen($word)) {
143 if (strpos($word,'/') === 0) {
144 if (preg_match($word, $body)) {
149 if (stristr($body, $word)) {
153 if (is_array($b['item']['tags']) && count($b['item']['tags'])) {
154 foreach ($b['item']['tags'] as $t) {
155 if (stristr($t, '>' . $word . '<')) {
166 $rnd = random_string(8);
167 $b['html'] = '<div id="nsfw-wrap-' . $rnd . '" class="fakelink" onclick=openClose(\'nsfw-' . $rnd . '\'); >' .
168 L10n::t('%s - Click to open/close', $word) .
169 '</div><div id="nsfw-' . $rnd . '" style="display: none; " >' . $b['html'] . '</div>';