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