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<?php |
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|
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class Red_Htaccess { |
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private $items = array(); |
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const INSERT_REGEX = '@\n?# Created by Redirection(?:.*?)# End of Redirection\n?@sm'; |
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|
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private function encode_from( $url ) { |
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$url = $this->encode( $url ); |
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|
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// Apache 2 does not need a leading slashing |
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$url = ltrim( $url, '/' ); |
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|
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// Exactly match the URL |
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return '^'.$url.'$'; |
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} |
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|
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private function encode2nd( $url ) { |
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$url = urlencode( $url ); |
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$url = str_replace( '%2F', '/', $url ); |
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$url = str_replace( '%3F', '?', $url ); |
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$url = str_replace( '%3A', ':', $url ); |
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$url = str_replace( '%3D', '=', $url ); |
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$url = str_replace( '%26', '&', $url ); |
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$url = str_replace( '%25', '%', $url ); |
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$url = str_replace( '+', '%20', $url ); |
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$url = str_replace( '%24', '$', $url ); |
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return $url; |
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} |
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|
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private function encode( $url ) { |
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$url = urlencode( $url ); |
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$url = str_replace( '%2F', '/', $url ); |
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$url = str_replace( '%3F', '?', $url ); |
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$url = str_replace( '+', '%20', $url ); |
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$url = str_replace( '.', '\\.', $url ); |
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return $url; |
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} |
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|
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private function encode_regex( $url ) { |
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// Remove any newlines |
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$url = preg_replace( "/[\r\n\t].*?$/s", '', $url ); |
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|
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// Remove invalid characters |
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$url = preg_replace( '/[^\PC\s]/u', '', $url ); |
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|
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// Make sure spaces are quoted |
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$url = str_replace( ' ', '%20', $url ); |
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$url = str_replace( '%24', '$', $url ); |
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|
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// No leading slash |
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$url = ltrim( $url, '/' ); |
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|
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// If pattern has a ^ at the start then ensure we don't have a slash immediatley after |
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$url = preg_replace( '@^\^/@', '^', $url ); |
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|
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return $url; |
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} |
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|
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private function add_referrer( $item, $match ) { |
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$from = $this->encode_from( ltrim( $item->get_url(), '/' ) ); |
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if ( $item->is_regex() ) { |
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$from = $this->encode_regex( ltrim( $item->get_url(), '/' ) ); |
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} |
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|
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if ( ( $match->url_from || $match->url_notfrom ) && $match->referrer ) { |
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$this->items[] = sprintf( 'RewriteCond %%{HTTP_REFERER} %s [NC]', ( $match->regex ? $this->encode_regex( $match->referrer ) : $this->encode_from( $match->referrer ) ) ); |
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|
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if ( $match->url_from ) { |
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$to = $this->target( $item->get_action_type(), $match->url_from, $item->get_action_code(), $item->is_regex() ); |
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$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to ); |
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} |
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|
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if ( $match->url_notfrom ) { |
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$to = $this->target( $item->get_action_type(), $match->url_notfrom, $item->get_action_code(), $item->is_regex() ); |
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$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to ); |
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} |
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} |
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} |
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|
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private function add_agent( $item, $match ) { |
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$from = $this->encode( ltrim( $item->get_url(), '/' ) ); |
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if ( $item->is_regex() ) |
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$from = $this->encode_regex( ltrim( $item->get_url(), '/' ) ); |
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|
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if ( ( $match->url_from || $match->url_notfrom ) && $match->user_agent ) { |
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$this->items[] = sprintf( 'RewriteCond %%{HTTP_USER_AGENT} %s [NC]', ( $match->regex ? $this->encode_regex( $match->user_agent ) : $this->encode2nd( $match->user_agent ) ) ); |
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|
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if ( $match->url_from ) { |
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$to = $this->target( $item->get_action_type(), $match->url_from, $item->get_action_code(), $item->is_regex() ); |
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$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to ); |
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} |
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|
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if ( $match->url_notfrom ) { |
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$to = $this->target( $item->get_action_type(), $match->url_notfrom, $item->get_action_code(), $item->is_regex() ); |
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$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to ); |
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} |
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} |
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} |
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|
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private function add_url( $item, $match ) { |
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$url = $item->get_url(); |
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|
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if ( $item->is_regex() === false && strpos( $url, '?' ) !== false || strpos( $url, '&' ) !== false ) { |
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$url_parts = parse_url( $url ); |
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$url = $url_parts['path']; |
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$this->items[] = sprintf( 'RewriteCond %%{QUERY_STRING} ^%s$', $url_parts['query'] ); |
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} |
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|
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$to = $this->target( $item->get_action_type(), $match->url, $item->get_action_code(), $item->is_regex() ); |
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$from = $this->encode_from( $url ); |
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|
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if ( $item->is_regex() ) { |
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$from = $this->encode_regex( $item->get_url() ); |
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} |
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|
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if ( $to ) { |
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$this->items[] = sprintf( 'RewriteRule %s %s', $from, $to ); |
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} |
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} |
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|
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private function action_random( $data, $code, $regex ) { |
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// Pick a WP post at random |
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global $wpdb; |
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|
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$post = $wpdb->get_var( "SELECT ID FROM {$wpdb->posts} ORDER BY RAND() LIMIT 0,1" ); |
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$url = parse_url( get_permalink( $post ) ); |
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|
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return sprintf( '%s [R=%d,L]', $this->encode( $url['path'] ), $code ); |
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} |
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|
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private function action_pass( $data, $code, $regex ) { |
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if ( $regex ) { |
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return sprintf( '%s [L]', $this->encode2nd( $data ), $code ); |
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} |
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return sprintf( '%s [L]', $this->encode2nd( $data ), $code ); |
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} |
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|
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private function action_error( $data, $code, $regex ) { |
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if ( $code === 410 ) { |
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return '/ [G]'; |
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} |
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return '/ [F]'; |
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} |
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|
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private function action_url( $data, $code, $regex ) { |
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if ( $regex ) { |
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return sprintf( '%s [R=%d,L]', $this->encode2nd( $data ), $code ); |
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} |
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return sprintf( '%s [R=%d,L]', $this->encode2nd( $data ), $code ); |
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} |
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|
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private function target( $action, $data, $code, $regex ) { |
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$target = 'action_'.$action; |
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|
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if ( method_exists( $this, $target ) ) { |
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return $this->$target( $data, $code, $regex ); |
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} |
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return ''; |
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} |
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|
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private function generate() { |
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$version = get_plugin_data( dirname( dirname( __FILE__ ) ).'/redirection.php' ); |
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|
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if ( count( $this->items ) === 0 ) { |
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return ''; |
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} |
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|
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$text[] = '# Created by Redirection'; |
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$text[] = '# '.date( 'r' ); |
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$text[] = '# Redirection '.trim( $version['Version'] ).' - https://redirection.me'; |
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$text[] = ''; |
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|
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// mod_rewrite section |
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$text[] = '<IfModule mod_rewrite.c>'; |
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|
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// Add redirects |
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$text = array_merge( $text, $this->items ); |
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|
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// End of mod_rewrite |
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$text[] = '</IfModule>'; |
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$text[] = ''; |
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|
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// End of redirection section |
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$text[] = '# End of Redirection'; |
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|
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$text = implode( "\r\n", $text ); |
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return "\n".$text."\n"; |
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} |
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|
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public function add( $item ) { |
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$target = 'add_'.$item->get_match_type(); |
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|
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if ( method_exists( $this, $target ) ) |
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$this->$target( $item, $item->match ); |
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} |
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|
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public function get( $existing = false ) { |
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$text = $this->generate(); |
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|
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if ( $existing ) { |
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if ( preg_match( self::INSERT_REGEX, $existing ) > 0 ) { |
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$text = preg_replace( self::INSERT_REGEX, str_replace( '$', '\\$', $text ), $existing ); |
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} else { |
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$text = trim( $existing )."\n".$text; |
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} |
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} |
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|
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return trim( $text ); |
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} |
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|
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public function save( $filename, $content_to_save = false ) { |
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$existing = false; |
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|
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if ( file_exists( $filename ) ) { |
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$existing = file_get_contents( $filename ); |
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} |
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|
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$file = @fopen( $filename, 'w' ); |
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if ( $file ) { |
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$result = fwrite( $file, $this->get( $existing ) ); |
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fclose( $file ); |
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|
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return $result !== false; |
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} |
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|
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return false; |
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} |
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} |
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|
