ajmorris · August 8, 2017 19:17 · Aug 8, 2017 · Dec 22, 2015 · Sep 3, 2015 · Sep 3, 2015
diff --git a/reverse-proxy.php b/reverse-proxy.php
@@ -41,4 +41,20 @@ function rp_is_login_page() {
         $final = str_replace("http://" . $_SERVER["HTTP_HOST"], "https://" . $_SERVER["HTTP_X_ORIGINAL_HOST"] . "/" . RP_SUBFOLDER, $final);
         echo $final;
     }, 0);
+}
+
+//This would only be needed if you are using Yoast SEO 
+add_filter( 'wpseo_canonical', 'lc_persistent_canonical' );
+
+/**
+ * Make this a universal change since we want this applied everywhere
+ * even if we aren't viewing view Reverse Proxy.
+ *
+ * Replace the "final_url" with the correct Final URL for the site
+ *
+ * @param      $canonical string
+ */
+function lc_persistent_canonical( $canonical ) {
+	$canonical = str_replace( site_url(), RP_FINAL_URL . RP_SUBFOLDER . '/', $canonical );
+	return $canonical;
 }
diff --git a/reverse-proxy.php b/reverse-proxy.php
@@ -13,7 +13,7 @@
 
 
 // Change to match the desired subfolder, no leading or tralling slash
-RP_SUBFOLDER = "blog";
+define("RP_SUBFOLDER", "blog");
 
 function rp_is_login_page() {
     return in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'));

diff --git a/z-nginx-config.txt b/z-nginx-config.txt
@@ -0,0 +1,9 @@
+# Example code for Nginx config
+# Put this inside the "server {" section
+location /blog/ {
+  proxy_set_header X-Original-Host $host;
+  proxy_set_header X-Is-Reverse-Proxy "true";
+  proxy_pass_header Set-Cookie;
+  proxy_cookie_path / /blog/;
+  proxy_pass http://yourpressableblog.com/;
+}
diff --git a/httpd-vhosts.conf → z-httpd-vhosts.conf b/httpd-vhosts.conf → z-httpd-vhosts.conf
diff --git a/gistfile1.txt → httpd-vhosts.conf b/gistfile1.txt → httpd-vhosts.conf
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,8 @@
+# Example code for Apache config
+# Put this inside the <VirtualHost> directive
+<Location /blog>
+    RequestHeader set X-Is-Reverse=Proxy true
+    RequestHeader set X-Original-Host yourwebsite.com
+    ProxyPass http://yourpressableblog.com
+    ProxyPassReverse http://yourpressableblog.com
+</Location>
diff --git a/reverse-proxy.php b/reverse-proxy.php
@@ -13,13 +13,13 @@
 
 
 // Change to match the desired subfolder, no leading or tralling slash
-INSTRUMENTAL_SUBFOLDER = "blog";
+RP_SUBFOLDER = "blog";
 
-function instrumental_is_login_page() {
+function rp_is_login_page() {
     return in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'));
 }
 
-if ( $_SERVER["REMOTE_ADDR"] != "127.0.0.1" && !is_admin() && !instrumental_is_login_page() && $_GET["preview"] != "true" ) {
+if ( $_SERVER["REMOTE_ADDR"] != "127.0.0.1" && !is_admin() && !rp_is_login_page() && $_GET["preview"] != "true" ) {
     add_action( 'init', function () {
     	if (!$_SERVER["HTTP_X_IS_REVERSE_PROXY"]) {
     		//not coming from us, 404 it.
@@ -38,7 +38,7 @@ function instrumental_is_login_page() {
         }
 
         // Apply any filters to the final output
-        $final = str_replace("http://" . $_SERVER["HTTP_HOST"], "https://" . $_SERVER["HTTP_X_ORIGINAL_HOST"] . "/" . INSTRUMENTAL_SUBFOLDER, $final);
+        $final = str_replace("http://" . $_SERVER["HTTP_HOST"], "https://" . $_SERVER["HTTP_X_ORIGINAL_HOST"] . "/" . RP_SUBFOLDER, $final);
         echo $final;
     }, 0);
 }
diff --git a/reverse-proxy.php b/reverse-proxy.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * @package Reverse Proxy
+ */
+/*
+Plugin Name: Reverse Proxy
+Plugin URI: https://instrumentalapp.com/
+Description: Reverse proxy setup for Instrumental blog
+Version: 1.0
+Author: James Paden
+Author URI: https://instrumentalapp.com
+*/
+
+
+// Change to match the desired subfolder, no leading or tralling slash
+INSTRUMENTAL_SUBFOLDER = "blog";
+
+function instrumental_is_login_page() {
+    return in_array($GLOBALS['pagenow'], array('wp-login.php', 'wp-register.php'));
+}
+
+if ( $_SERVER["REMOTE_ADDR"] != "127.0.0.1" && !is_admin() && !instrumental_is_login_page() && $_GET["preview"] != "true" ) {
+    add_action( 'init', function () {
+    	if (!$_SERVER["HTTP_X_IS_REVERSE_PROXY"]) {
+    		//not coming from us, 404 it.
+    		header($_SERVER["SERVER_PROTOCOL"]." 404 Not Found");
+    		exit;
+    	}
+    });
+
+    //From http://stackoverflow.com/questions/772510/wordpress-filter-to-modify-final-html-output
+    ob_start();
+    add_action('shutdown', function() {
+        $final = '';
+        $levels = count(ob_get_level());
+        for ( $i = 0; $i < $levels; $i++ ) {
+            $final .= ob_get_clean();
+        }
+
+        // Apply any filters to the final output
+        $final = str_replace("http://" . $_SERVER["HTTP_HOST"], "https://" . $_SERVER["HTTP_X_ORIGINAL_HOST"] . "/" . INSTRUMENTAL_SUBFOLDER, $final);
+        echo $final;
+    }, 0);
+}