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< ? php
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/**
* Name : NSFW
* Description : Collapse posts with inappropriate content
* Version : 1.0
* Author : Mike Macgirvin < http :// macgirvin . com / profile / mike >
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*
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*/
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use Friendica\Core\Addon ;
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use Friendica\Core\L10n ;
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use Friendica\Core\PConfig ;
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function nsfw_install ()
{
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Addon :: registerHook ( 'prepare_body' , 'addon/nsfw/nsfw.php' , 'nsfw_prepare_body' , 10 );
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Addon :: registerHook ( 'addon_settings' , 'addon/nsfw/nsfw.php' , 'nsfw_addon_settings' );
Addon :: registerHook ( 'addon_settings_post' , 'addon/nsfw/nsfw.php' , 'nsfw_addon_settings_post' );
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}
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function nsfw_uninstall ()
{
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Addon :: unregisterHook ( 'prepare_body' , 'addon/nsfw/nsfw.php' , 'nsfw_prepare_body' );
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Addon :: unregisterHook ( 'addon_settings' , 'addon/nsfw/nsfw.php' , 'nsfw_addon_settings' );
Addon :: unregisterHook ( '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
// 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 ( $body )
{
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$new_body = '' ;
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$img_start = strpos ( $body , 'src="data:' );
$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:' );
$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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function nsfw_addon_settings ( & $a , & $s )
{
if ( ! local_user ()) {
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return ;
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}
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/* Add our stylesheet to the page so we can make our settings look nice */
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$a -> page [ 'htmlhead' ] .= '<link rel="stylesheet" type="text/css" href="' . $a -> get_baseurl () . '/addon/nsfw/nsfw.css' . '" media="all" />' . " \r \n " ;
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$enable_checked = ( intval ( PConfig :: get ( local_user (), 'nsfw' , 'disable' )) ? '' : ' checked="checked" ' );
$words = PConfig :: get ( local_user (), 'nsfw' , 'words' );
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>' . L10n :: t ( 'Content Filter (NSFW and more)' ) . '</h3>' ;
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$s .= '</span>' ;
$s .= '<div id="settings_nsfw_expanded" class="settings-block" style="display: none;">' ;
$s .= '<span class="fakelink" onclick="openClose(\'settings_nsfw_expanded\'); openClose(\'settings_nsfw_inflated\');">' ;
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$s .= '<h3>' . L10n :: t ( 'Content Filter (NSFW and more)' ) . '</h3>' ;
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$s .= '</span>' ;
$s .= '<div id="nsfw-wrapper">' ;
$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>' ;
$s .= '<label id="nsfw-enable-label" for="nsfw-enable">' . L10n :: t ( 'Enable Content filter' ) . ' </label>' ;
$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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$s .= '<label id="nsfw-label" for="nsfw-words">' . L10n :: t ( 'Comma separated list of keywords to hide' ) . ' </label>' ;
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$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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$s .= '<div class="settings-submit-wrapper" ><input type="submit" id="nsfw-submit" name="nsfw-submit" class="settings-submit" value="' . L10n :: t ( 'Save Settings' ) . '" /></div>' ;
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$s .= '<div class="nsfw-desc">' . L10n :: t ( 'Use /expression/ to provide regular expressions' ) . '</div></div>' ;
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return ;
}
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function nsfw_addon_settings_post ( & $a , & $b )
{
if ( ! local_user ()) {
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return ;
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}
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if ( $_POST [ 'nsfw-submit' ]) {
PConfig :: set ( local_user (), 'nsfw' , 'words' , trim ( $_POST [ 'nsfw-words' ]));
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$enable = ( x ( $_POST , 'nsfw-enable' ) ? intval ( $_POST [ 'nsfw-enable' ]) : 0 );
$disable = 1 - $enable ;
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PConfig :: set ( local_user (), 'nsfw' , 'disable' , $disable );
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info ( L10n :: t ( 'NSFW Settings saved.' ) . EOL );
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}
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}
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function nsfw_prepare_body ( Friendica\App $a , & $b )
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{
// Don't do the check when there is a content warning
if ( ! empty ( $b [ 'item' ][ 'content-warning' ])) {
return ;
}
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$words = null ;
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if ( PConfig :: get ( local_user (), 'nsfw' , 'disable' )) {
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return ;
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}
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if ( local_user ()) {
$words = 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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}
$found = false ;
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if ( count ( $word_list )) {
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$body = $b [ 'item' ][ 'title' ] . " \n " . nsfw_extract_photos ( $b [ 'html' ]);
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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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if ( strpos ( $word , '/' ) === 0 ) {
if ( preg_match ( $word , $body )) {
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$found = true ;
break ;
}
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} else {
if ( stristr ( $body , $word )) {
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$found = true ;
break ;
}
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if ( is_array ( $b [ 'item' ][ 'tags' ]) && count ( $b [ 'item' ][ 'tags' ])) {
foreach ( $b [ 'item' ][ 'tags' ] as $t ) {
if ( stristr ( $t , '>' . $word . '<' )) {
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$found = true ;
break ;
}
}
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}
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}
}
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}
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if ( $found ) {
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$rnd = random_string ( 8 );
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$b [ 'html' ] = '<div id="nsfw-wrap-' . $rnd . '" class="fakelink" onclick=openClose(\'nsfw-' . $rnd . '\'); >' .
L10n :: t ( '%s - Click to open/close' , $word ) .
'</div><div id="nsfw-' . $rnd . '" style="display: none; " >' . $b [ 'html' ] . '</div>' ;
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}
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}