From fc317172d5c6632df50aa8e25509ee2b6b830d2f Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Thu, 7 Nov 2013 20:18:52 -0800
Subject: more e2ee infrastructure - at this point if somebody wants it they're
 going to have to work for it.

---
 include/bbcode.php | 41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

(limited to 'include')

diff --git a/include/bbcode.php b/include/bbcode.php
index 9ca8e3f03..14d0ce14a 100644
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -99,6 +99,43 @@ function bb_replace_images($body, $images) {
 }}
 
 
+
+function bb_parse_crypt($match) {
+
+	$attributes = $match[1];
+
+	$algorithm = "";
+	preg_match("/alg='(.*?)'/ism", $attributes, $matches);
+	if ($matches[1] != "")
+		$algorithm = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
+
+	preg_match("/alg=\&quot\;(.*?)\&quot\;/ism", $attributes, $matches);
+	if ($matches[1] != "")
+		$algorithm = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
+
+	$hint = "";
+	preg_match("/hint='(.*?)'/ism", $attributes, $matches);
+	if ($matches[1] != "")
+		$hint = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
+	preg_match("/hint=\&quot\;(.*?)\&quot\;/ism", $attributes, $matches);
+	if ($matches[1] != "")
+		$hint = html_entity_decode($matches[1],ENT_QUOTES,'UTF-8');
+
+	// Next we really should link to a JS routine based on the algorithm which prompts for a key
+	// something like zdecrypt_{algorithm}, which will be a no-op if the decryption algorithm is not present 
+	// We can either pass the text or pass a message ID and let the decryption module call /viewsrc or something
+	// to get the text. The text might be large so the message ID might be preferable. But if we pass the 
+	// text directly we won't have to do a network fetch; and can potentially display the results in a popup.
+
+
+	$Text = '<br/><img src="' . z_root() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . t('Encrypted content') . '" /><br />' . t('Algorithm: ') . $algorithm . '<br />' . t('Key hint: ') . $hint . '<br />';
+
+	return $Text;
+
+}
+
+
+
 function bb_ShareAttributes($match) {
 
 	$attributes = $match[1];
@@ -465,9 +502,9 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true) {
 		$Text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$1" alt="' . t('Image/photo') . '" />', $Text);
 	}
 
-	if (strpos($Text,'[crypt]') !== false) {	
+	if (strpos($Text,'[/crypt]') !== false) {	
 		$Text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism",'<br/><img src="' .$a->get_baseurl() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . t('Encrypted content') . '" /><br />', $Text);
-		$Text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism",'<br/><img src="' .$a->get_baseurl() . '/images/lock_icon.gif" alt="' . t('Encrypted content') . '" title="' . '$1' . ' ' . t('Encrypted content') . '" /><br />', $Text);
+		$Text = preg_replace_callback("/\[crypt (.*?)\](.*?)\[\/crypt\]/ism", 'bb_parse_crypt', $Text);
 	}
 	// Try to Oembed
 	if ($tryoembed) {
-- 
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