mirror of
https://git.friendi.ca/friendica/friendica-addons.git
synced 2024-08-20 21:30:25 +00:00
170 lines
5.5 KiB
PHP
170 lines
5.5 KiB
PHP
<?php
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/**
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* Name: NSFW
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* Description: Collapse posts with inappropriate content
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* Version: 1.0
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* Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
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*
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*/
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use Friendica\Core\Hook;
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use Friendica\DI;
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function nsfw_install()
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{
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Hook::register('prepare_body_content_filter', 'addon/nsfw/nsfw.php', 'nsfw_prepare_body_content_filter', 10);
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Hook::register('addon_settings', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings');
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Hook::register('addon_settings_post', 'addon/nsfw/nsfw.php', 'nsfw_addon_settings_post');
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}
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// This function isn't perfect and isn't trying to preserve the html structure - it's just a
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// quick and dirty filter to pull out embedded photo blobs because 'nsfw' seems to come up
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// inside them quite often. We don't need anything fancy, just pull out the data blob so we can
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// check against the rest of the body.
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function nsfw_extract_photos($body)
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{
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$new_body = '';
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$img_start = strpos($body, 'src="data:');
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$img_end = (($img_start !== false) ? strpos(substr($body, $img_start), '>') : false);
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$cnt = 0;
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while ($img_end !== false) {
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$img_end += $img_start;
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$new_body = $new_body . substr($body, 0, $img_start);
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$cnt ++;
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$body = substr($body, 0, $img_end);
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$img_start = strpos($body, 'src="data:');
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$img_end = (($img_start !== false) ? strpos(substr($body, $img_start), '>') : false);
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}
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if (!$cnt) {
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return $body;
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}
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return $new_body;
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}
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function nsfw_addon_settings(&$a, &$s)
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{
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if (!local_user()) {
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return;
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}
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/* Add our stylesheet to the page so we can make our settings look nice */
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DI::page()['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . DI::baseUrl()->get() . '/addon/nsfw/nsfw.css' . '" media="all" />' . "\r\n";
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$enable_checked = (intval(DI::pConfig()->get(local_user(), 'nsfw', 'disable')) ? '' : ' checked="checked" ');
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$words = DI::pConfig()->get(local_user(), 'nsfw', 'words');
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if (!$words) {
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$words = 'nsfw,';
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}
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$s .= '<span id="settings_nsfw_inflated" class="settings-block fakelink" style="display: block;" onclick="openClose(\'settings_nsfw_expanded\'); openClose(\'settings_nsfw_inflated\');">';
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$s .= '<h3>' . DI::l10n()->t('Content Filter (NSFW and more)') . '</h3>';
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$s .= '</span>';
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$s .= '<div id="settings_nsfw_expanded" class="settings-block" style="display: none;">';
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$s .= '<span class="fakelink" onclick="openClose(\'settings_nsfw_expanded\'); openClose(\'settings_nsfw_inflated\');">';
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$s .= '<h3>' . DI::l10n()->t('Content Filter (NSFW and more)') . '</h3>';
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$s .= '</span>';
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$s .= '<div id="nsfw-wrapper">';
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$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>';
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$s .= '<label id="nsfw-enable-label" for="nsfw-enable">' . DI::l10n()->t('Enable Content filter') . ' </label>';
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$s .= '<input id="nsfw-enable" type="checkbox" name="nsfw-enable" value="1"' . $enable_checked . ' />';
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$s .= '<div class="clear"></div>';
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$s .= '<label id="nsfw-label" for="nsfw-words">' . DI::l10n()->t('Comma separated list of keywords to hide') . ' </label>';
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$s .= '<textarea id="nsfw-words" type="text" name="nsfw-words">' . $words . '</textarea>';
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$s .= '</div><div class="clear"></div>';
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$s .= '<div class="settings-submit-wrapper" ><input type="submit" id="nsfw-submit" name="nsfw-submit" class="settings-submit" value="' . DI::l10n()->t('Save Settings') . '" /></div>';
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$s .= '<div class="nsfw-desc">' . DI::l10n()->t('Use /expression/ to provide regular expressions') . '</div></div>';
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return;
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}
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function nsfw_addon_settings_post(&$a, &$b)
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{
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if (!local_user()) {
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return;
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}
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if (!empty($_POST['nsfw-submit'])) {
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DI::pConfig()->set(local_user(), 'nsfw', 'words', trim($_POST['nsfw-words']));
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$enable = (!empty($_POST['nsfw-enable']) ? intval($_POST['nsfw-enable']) : 0);
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$disable = 1 - $enable;
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DI::pConfig()->set(local_user(), 'nsfw', 'disable', $disable);
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}
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}
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function nsfw_prepare_body_content_filter(\Friendica\App $a, &$hook_data)
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{
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$words = null;
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if (DI::pConfig()->get(local_user(), 'nsfw', 'disable')) {
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return;
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}
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if (local_user()) {
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$words = DI::pConfig()->get(local_user(), 'nsfw', 'words');
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}
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if ($words) {
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$word_list = explode(',', $words);
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} else {
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$word_list = ['nsfw'];
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}
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$found = false;
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if (count($word_list)) {
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$body = $hook_data['item']['title'] . "\n" . nsfw_extract_photos($hook_data['item']['body']);
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foreach ($word_list as $word) {
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$word = trim($word);
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if (!strlen($word)) {
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continue;
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}
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$tag_search = false;
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switch ($word[0]) {
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case '/'; // Regular expression
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$found = preg_match($word, $body);
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break;
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case '#': // Hashtag-only search
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$tag_search = true;
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$found = nsfw_find_word_in_item_tags($hook_data['item']['hashtags'], substr($word, 1));
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break;
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default:
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$found = stripos($body, $word) !== false || nsfw_find_word_in_item_tags($hook_data['item']['tags'], $word);
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break;
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}
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if ($found) {
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break;
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}
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}
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}
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if ($found) {
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if ($tag_search) {
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$hook_data['filter_reasons'][] = DI::l10n()->t('Filtered tag: %s', $word);
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} else {
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$hook_data['filter_reasons'][] = DI::l10n()->t('Filtered word: %s', $word);
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}
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}
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}
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function nsfw_find_word_in_item_tags($item_tags, $word)
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{
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if (is_array($item_tags)) {
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foreach ($item_tags as $tag) {
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if (stripos($tag, '>' . $word . '<') !== false) {
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return true;
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}
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}
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}
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return false;
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}
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