From 1978500e8ffb8ffdffd2d2969cbafb6f43b9dde4 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Thu, 14 Aug 2014 23:05:19 -0700
Subject: pkcs1 to pkcs8 key conversion - this is a lot easier than parsing
 ASN.1 DER formats and rebuilding the darn things like we used to do. Check
 for illegal hex encoded album names in mod/photo so we don't throw php
 errors. Don't know where they come from but we get a lot of them.

---
 include/crypto.php | 24 ++++++++++++++++++++++++
 mod/photos.php     |  5 +++++
 2 files changed, 29 insertions(+)

diff --git a/include/crypto.php b/include/crypto.php
index 33cdc10c0..d8d79eaea 100644
--- a/include/crypto.php
+++ b/include/crypto.php
@@ -127,3 +127,27 @@ function new_keypair($bits) {
 
 }
 
+function pkcs1to8($oldkey) {
+
+	if(strstr($oldkey,'BEGIN PUBLIC'))
+		return $oldkey;
+
+	$oldkey = str_replace('-----BEGIN RSA PUBLIC KEY-----', '', $oldkey);
+	$oldkey = trim(str_replace('-----END RSA PUBLIC KEY-----', '', $oldkey));
+	$key = 'MIICIjANBgkqhkiG9w0BAQEFAAOCAg8A' . str_replace("\n", '', $oldkey);
+	$key = "-----BEGIN PUBLIC KEY-----\n" . wordwrap($key, 64, "\n", true) . "\n-----END PUBLIC KEY-----";
+	return $key;
+}
+
+function pkcs8to1($oldkey) {
+
+	if(strstr($oldkey,'BEGIN RSA'))
+		return $oldkey;
+
+	$oldkey = str_replace('-----BEGIN PUBLIC KEY-----', '', $oldkey);
+	$oldkey = trim(str_replace('-----END PUBLIC KEY-----', '', $oldkey));
+	$key = str_replace("\n",'',$oldkey);
+	$key = substr($key,32);
+	$key = "-----BEGIN RSA PUBLIC KEY-----\n" . wordwrap($key, 64, "\n", true) . "\n-----END RSA PUBLIC KEY-----";
+	return $key;
+}
\ No newline at end of file
diff --git a/mod/photos.php b/mod/photos.php
index c43beb8d4..86e027bab 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -618,6 +618,11 @@ function photos_content(&$a) {
 
 	if($datatype === 'album') {
 
+		if((strlen($datum) & 1) || (! ctype_xdigit($datum))) {
+			notice( t('Album name could not be decoded') . EOL);
+			$datum = '';
+		}
+
 		$album = hex2bin($datum);
 
 		$r = q("SELECT `resource_id`, max(`scale`) AS `scale` FROM `photo` WHERE `uid` = %d AND `album` = '%s' 
-- 
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