Add support for the torden branch of ngx_cache_purge

The torden branch has support for `purge_all` with the following
directive added to the nginx configuration:

```
location = /purgeall {
	fastcgi_pass		unix:/dev/null;
	fastcgi_cache		WORDPRESS;
	fastcgi_cache_purge	PURGE purge_all from 127.0.0.1;
}
```

This makes it possible to purge the cache on systems where Nginx is
running as a different user to the PHP process.

Note, the `unix:/dev/null` in the above example is not a placeholder,
the module needs `fastcgi_pass` set to something valid or it will not
function, even though it never uses the value provided.

Author: gnif

admin/class-fastcgi-purger.php

@@ -69,6 +69,10 @@ public function purge_url( $url, $feed = true ) {
 
 			case 'get_request':
 				// Go to default case.
+
+			case 'get_request_torden':
+				// Go to default case.
+
 			default:
 				$_url_purge_base = $this->purge_base_url() . $parse['path'];
 				$_url_purge      = $_url_purge_base;
@@ -137,6 +141,10 @@ public function custom_purge_urls() {
 
 			case 'get_request':
 				// Go to default case.
+
+			case 'get_request_torden':
+				// Go to default case.
+
 			default:
 				$_url_purge_base = $this->purge_base_url();
 
@@ -166,7 +174,48 @@ public function custom_purge_urls() {
 	 */
 	public function purge_all() {
 
-		$this->unlink_recursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
+		global $nginx_helper_admin;
+
+		switch ( $nginx_helper_admin->options['purge_method'] ) {
+
+			case 'get_request_torden':
+				$site = get_site_url();
+				$find = [ 'http://', 'https://' ];
+				$replace = '';
+				$host = str_replace( $find, $replace, $site);
+
+				if ( is_ssl() ) {
+
+					$purgeurl = $site . '/purgeall' ;
+					$curl = curl_init( $purgeurl );
+					curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "PURGE" );
+					curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
+					curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+					curl_setopt($curl, CURLOPT_RESOLVE, array( $host . ":443:127.0.0.1" ));
+
+				} else {
+
+					$curl = curl_init( "http://127.0.0.1/purgeall" );
+					curl_setopt($curl, CURLOPT_HTTPHEADER, array('Host:' . $host ));
+					curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "PURGE" );
+					curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE);
+
+				}
+
+				$response = curl_exec($curl);
+				if ($response === false)
+					$this->log( curl_errno($curl) .': '. curl_error($curl) );
+				curl_close($curl);
+				break;
+
+			case 'get_request':
+				// Go to default case.
+
+			default:
+				$this->unlink_recursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
+				break;
+		}
+
 		$this->log( '* * * * *' );
 		$this->log( '* Purged Everything!' );
 		$this->log( '* * * * *' );

admin/partials/nginx-helper-general-options.php

@@ -181,7 +181,40 @@
 													sprintf(
 														// translators: %s Nginx cache purge module link.
 														__( 'Uses the %s module.', 'nginx-helper' ),
-														'<strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge</a></strong>'
+														'<strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge (FRiCKLE)</a></strong>'
+													),
+													array(
+														'strong' => array(),
+														'a'      => array(
+															'href' => array(),
+														),
+													)
+												);
+											?>
+										</small>
+                  </label>
+                  <br />
+									<label for="purge_method_get_request_torden">
+										<input type="radio" value="get_request_torden" id="purge_method_get_request_torden" name="purge_method" <?php checked( $nginx_helper_settings['purge_method'], 'get_request_torden' ); ?>>
+										&nbsp;
+										<?php
+											echo wp_kses(
+												sprintf(
+													'%1$s <strong>PURGE/url</strong> %2$s',
+													esc_html__( 'Using a GET request to', 'nginx-helper' ),
+													esc_html__( '(Supports torden\'s `purge_all` method)', 'nginx-helper' )
+												),
+												array( 'strong' => array() )
+											);
+										?>
+										<br />
+										<small>
+											<?php
+												echo wp_kses(
+													sprintf(
+														// translators: %s Nginx cache purge module link.
+														__( 'Uses the %s module.', 'nginx-helper' ),
+														'<strong><a href="https://github.com/torden/ngx_cache_purge">ngx_cache_purge (torden)</a></strong>'
 													),
 													array(
 														'strong' => array(),

readme.txt

@@ -1,5 +1,5 @@
 === Nginx Helper ===
-Contributors: rtcamp, rahul286, saurabhshukla, manishsongirkar36, faishal, desaiuditd, darren-slatten, jk3us, daankortenbach, telofy, pjv, llonchj, jinnko, weskoop, bcole808, gungeekatx, rohanveer, chandrapatel, gagan0123, ravanh, michaelbeil, samedwards, niwreg, entr, nuvoPoint, iam404, rittesh.patel, vishalkakadiya, BhargavBhandari90, vincent-lu, murrayjbrown, bryant1410, 1gor, matt-h, pySilver, johan-chassaing, dotsam, sanketio, petenelson, nathanielks, rigagoogoo, dslatten, jinschoi, kelin1003, vaishuagola27, rahulsprajapati, Joel-James, utkarshpatel, gsayed786, shashwatmittal, sudhiryadav, thrijith, stayallive, jaredwsmith, abhijitrakas, umeshnevase, sid177, souptik, arafatkn, subscriptiongroup
+Contributors: rtcamp, rahul286, saurabhshukla, manishsongirkar36, faishal, desaiuditd, darren-slatten, jk3us, daankortenbach, telofy, pjv, llonchj, jinnko, weskoop, bcole808, gungeekatx, rohanveer, chandrapatel, gagan0123, ravanh, michaelbeil, samedwards, niwreg, entr, nuvoPoint, iam404, rittesh.patel, vishalkakadiya, BhargavBhandari90, vincent-lu, murrayjbrown, bryant1410, 1gor, matt-h, pySilver, johan-chassaing, dotsam, sanketio, petenelson, nathanielks, rigagoogoo, dslatten, jinschoi, kelin1003, vaishuagola27, rahulsprajapati, Joel-James, utkarshpatel, gsayed786, shashwatmittal, sudhiryadav, thrijith, stayallive, jaredwsmith, abhijitrakas, umeshnevase, sid177, souptik, arafatkn, subscriptiongroup, gnif
 Donate Link: http://rt.cx/eedonate/
 Tags: nginx, cache, purge, nginx map, nginx cache, maps, fastcgi, proxy, redis, redis-cache, rewrite, permalinks
 License: GPLv2 or later (of-course)