From c037a5083ca45738247bb250693f3e8fd08c5424 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Tue, 1 Jul 2014 18:38:44 -0700
Subject: optionally allow zrl usage from specific markdown sources

---
 include/bb2diaspora.php | 11 +++++++++--
 include/network.php     | 18 +++++++++---------
 mod/item.php            |  2 +-
 3 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/include/bb2diaspora.php b/include/bb2diaspora.php
index 2ac1f43c8..41001d216 100644
--- a/include/bb2diaspora.php
+++ b/include/bb2diaspora.php
@@ -72,7 +72,7 @@ function bb_tag_preg_replace($pattern, $replace, $name, $s) {
 // So we'll use that to convert to HTML, then convert the HTML back to bbcode,
 // and then clean up a few Diaspora specific constructs.
 
-function diaspora2bb($s) {
+function diaspora2bb($s,$use_zrl = false) {
 
 
 	$s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
@@ -106,7 +106,14 @@ function diaspora2bb($s) {
 	$s = str_replace('&#x2672;',html_entity_decode('&#x2672;',ENT_QUOTES,'UTF-8'),$s);
 
 	// Convert everything that looks like a link to a link
-	$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
+	if($use_zrl) {
+		$s = str_replace(array('[img','/img]'),array('[zmg','/zmg]'),$s);
+		$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[zrl=$2$3]$2$3[/zrl]',$s);
+	}
+	else {
+		$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
+
+	}
 
 	//$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
 	$s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]','url',$s);
diff --git a/include/network.php b/include/network.php
index 03faf9957..66bba5b38 100644
--- a/include/network.php
+++ b/include/network.php
@@ -597,21 +597,21 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 	$s = htmlspecialchars_decode($s, ENT_COMPAT);
 
 	$matches = null;
-	$c = preg_match_all('/\[img(.*?)\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
+	$c = preg_match_all('/\[([zi])mg(.*?)\](.*?)\[\/[zi]mg\]/ism',$s,$matches,PREG_SET_ORDER);
 	if($c) {
 		require_once('include/photo/photo_driver.php');
 
 		foreach($matches as $mtch) {
-			logger('scale_external_image: ' . $mtch[1] . ' ' . $mtch[2]);
+			logger('scale_external_image: ' . $mtch[2] . ' ' . $mtch[3]);
 			
 			if(substr($mtch[1],0,1) == '=') {
-				$owidth = intval(substr($mtch[1],1));
+				$owidth = intval(substr($mtch[2],1));
 				if(intval($owidth) > 0 && intval($owidth) < 640)
 					continue;
 			}
 
 			$hostname = str_replace('www.','',substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')+3));
-			if(stristr($mtch[2],$hostname))
+			if(stristr($mtch[3],$hostname))
 				continue;
 
 			// $scale_replace, if passed, is an array of two elements. The
@@ -620,9 +620,9 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 			// This allows Friendica to display the smaller remote image if
 			// one exists, while still linking to the full-size image
 			if($scale_replace)
-				$scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[2]);
+				$scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[3]);
 			else
-				$scaled = $mtch[2];
+				$scaled = $mtch[3];
 			$i = z_fetch_url($scaled);
 
 
@@ -633,7 +633,7 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 			}
 
 			// guess mimetype from headers or filename
-			$type = guess_image_type($mtch[2],$i['header']);
+			$type = guess_image_type($mtch[3],$i['header']);
 			
 			if($i['success']) {
 				$ph = photo_factory($i['body'], $type);
@@ -642,12 +642,12 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
 					$orig_height = $ph->getHeight();
 
 					if($orig_width > 640 || $orig_height > 640) {
-
+						$tag = (($match[1] == 'z') ? 'zmg' : 'img');
 						$ph->scaleImage(640);
 						$new_width = $ph->getWidth();
 						$new_height = $ph->getHeight();
 						logger('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], LOGGER_DEBUG);
-						$s = str_replace($mtch[0],'[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
+						$s = str_replace($mtch[0],'[' . $tag . '=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/' . $tag . ']'
 							. "\n" . (($include_link) 
 								? '[zrl=' . $mtch[2] . ']' . t('view full size') . '[/zrl]' . "\n"
 								: ''),$s);
diff --git a/mod/item.php b/mod/item.php
index ce43bdf96..c346389e7 100644
--- a/mod/item.php
+++ b/mod/item.php
@@ -424,7 +424,7 @@ function item_post(&$a) {
 
 		if(local_user() && local_user() == $profile_uid && get_pconfig(local_user(),'editor','use_markdown')) {
 			require_once('include/bb2diaspora.php');
-			$body = diaspora2bb($body);
+			$body = diaspora2bb($body,true);
 		}
 
 
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