From 2ffe0d0b1d9589b6b37d8ade0114caef31339001 Mon Sep 17 00:00:00 2001
From: Friendika <info@friendika.com>
Date: Wed, 19 Jan 2011 19:51:34 -0800
Subject: [PATCH] do a better job of comparing same URLs.

---
 boot.php        | 19 +++++++++++++++++++
 mod/display.php |  4 ++--
 mod/network.php |  6 +++---
 mod/profile.php |  4 ++--
 4 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/boot.php b/boot.php
index d458b8647c..05b33abd6e 100644
--- a/boot.php
+++ b/boot.php
@@ -2191,3 +2191,22 @@ function get_birthdays() {
 
 }}
 
+/**
+ *
+ * Compare two URLs to see if they are the same, but ignore
+ * slight but hopefully insignificant differences such as if one 
+ * is https and the other isn't, or if one is www.something and 
+ * the other isn't - and also ignore case differences.
+ *
+ * Return true if the URLs match, otherwise false.
+ *
+ */
+
+if(! function_exists('link_compare')) {
+function link_compare($a,$b) {
+	$a1 = str_replace(array('https:','//www.'), array('http:','//'), $a);
+	$b1 = str_replace(array('https:','//www.'), array('http:','//'), $b);
+	if(strcasecmp($a1,$b1) === 0)
+		return true;
+	return false;
+}}
diff --git a/mod/display.php b/mod/display.php
index 0e5768838f..de11ec35d6 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -202,7 +202,7 @@ function display_content(&$a) {
 					$template = $wallwall;
 					$commentww = 'ww';
 					// If it is our contact, use a friendly redirect link
-					if(($item['owner-link'] == $item['url']) && ($item['network'] === 'dfrn')) {
+					if((link_compare($item['owner-link'],$item['url'])) && ($item['network'] === 'dfrn')) {
 						$owner_url = $redirect_url;
 						$osparkle = ' sparkle';
 					}
@@ -211,7 +211,7 @@ function display_content(&$a) {
 				}
 			}
 
-			$diff_author = (($item['url'] !== $item['author-link']) ? true : false);
+			$diff_author = ((link_compare($item['url'],$item['author-link'])) ? false : true);
 
 			$profile_name   = (((strlen($item['author-name']))   && $diff_author) ? $item['author-name']   : $item['name']);
 			$profile_avatar = (((strlen($item['author-avatar'])) && $diff_author) ? $item['author-avatar'] : $item['thumb']);
diff --git a/mod/network.php b/mod/network.php
index d094febc67..aa42e2f529 100644
--- a/mod/network.php
+++ b/mod/network.php
@@ -303,7 +303,7 @@ function network_content(&$a, $update = 0) {
 					$template = $wallwall;
 					$commentww = 'ww';
 					// If it is our contact, use a friendly redirect link
-					if(($item['owner-link'] == $item['url']) 
+					if((link_compare($item['owner-link'],$item['url'])) 
 						&& ($item['network'] === 'dfrn')) {
 						$owner_url = $redirect_url;
 						$osparkle = ' sparkle';
@@ -350,7 +350,7 @@ function network_content(&$a, $update = 0) {
 
 			// Post was remotely authored.
 
-			$diff_author = (($item['url'] !== $item['author-link']) ? true : false);
+			$diff_author = ((link_compare($item['url'],$item['author-link'])) ? false : true);
 
 			$profile_name   = (((strlen($item['author-name']))   && $diff_author) ? $item['author-name']   : $item['name']);
 			$profile_avatar = (((strlen($item['author-avatar'])) && $diff_author) ? $item['author-avatar'] : $thumb);
@@ -361,7 +361,7 @@ function network_content(&$a, $update = 0) {
 			// Can we use our special contact URL for this author? 
 
 			if(strlen($item['author-link'])) {
-				if($item['author-link'] == $item['url'] && ($item['network'] === 'dfrn') && (! $item['self'])) {
+				if((link_compare($item['author-link'],$item['url'])) && ($item['network'] === 'dfrn') && (! $item['self'])) {
 					$profile_link = $redirect_url;
 					$sparkle = ' sparkle';
 				}
diff --git a/mod/profile.php b/mod/profile.php
index bcd2b64e36..9363793604 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -297,7 +297,7 @@ function profile_content(&$a, $update = 0) {
 
 			$profile_url = $item['url'];
 
-			// This is my profile but I'm not the author of this post/comment. If it's somebody that's a fan or mutual friend,
+			// This is my profile page but I'm not the author of this post/comment. If it's somebody that's a fan or mutual friend,
 			// I can go directly to their profile as an authenticated guest.
 
 			if(local_user() && ($item['contact-uid'] == $_SESSION['uid']) 
@@ -314,7 +314,7 @@ function profile_content(&$a, $update = 0) {
 			// local contact info at all. In this module you should never encounter a third-party author, but we still will do
 			// the right thing if you ever do. 
 
-			$diff_author = (($item['url'] !== $item['author-link']) ? true : false);
+			$diff_author = ((link_compare($item['url'],$item['author-link'])) ? false : true);
 
 			$profile_name   = (((strlen($item['author-name']))   && $diff_author) ? $item['author-name']   : $item['name']);
 			$profile_avatar = (((strlen($item['author-avatar'])) && $diff_author) ? $item['author-avatar'] : $item['thumb']);