From cf4795fcc34026d4053dfa65ca7550731614caec Mon Sep 17 00:00:00 2001
From: Andy Coates <andycoatz@gmail.com>
Date: Thu, 28 Jan 2016 12:56:17 +0000
Subject: [PATCH] Make item names no longer than 100 characters

---
 src/Message/AbstractRequest.php              |  4 ++--
 tests/Message/DirectAuthorizeRequestTest.php | 10 ++++++----
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/Message/AbstractRequest.php b/src/Message/AbstractRequest.php
index e965b3a..192cbb2 100644
--- a/src/Message/AbstractRequest.php
+++ b/src/Message/AbstractRequest.php
@@ -159,7 +159,7 @@ protected function filterItemName($name)
         $standardChars = "0-9a-zA-Z";
         $allowedSpecialChars = " +'/\\&:,.-{}";
         $pattern = '`[^'.$standardChars.preg_quote($allowedSpecialChars, '/').']`';
-        $name = trim(preg_replace($pattern, '', $name));
+        $name = trim(substr(preg_replace($pattern, '', $name), 0, 100));
 
         return $name;
     }
@@ -179,7 +179,7 @@ protected function filterDiscountName($name)
         $standardChars = "0-9a-zA-Z";
         $allowedSpecialChars = " +'/\\:,.-{};_@()^\"~[]$=!#?|";
         $pattern = '`[^'.$standardChars.preg_quote($allowedSpecialChars, '/').']`';
-        $name = trim(preg_replace($pattern, '', $name));
+        $name = trim(substr(preg_replace($pattern, '', $name), 0, 100));
 
         return $name;
     }
diff --git a/tests/Message/DirectAuthorizeRequestTest.php b/tests/Message/DirectAuthorizeRequestTest.php
index ffdf7bb..3198a86 100644
--- a/tests/Message/DirectAuthorizeRequestTest.php
+++ b/tests/Message/DirectAuthorizeRequestTest.php
@@ -212,7 +212,7 @@ public function testMixedBasketWithSpecialChars()
     {
         $items = new \Omnipay\Common\ItemBag(array(
             new \Omnipay\Common\Item(array(
-                'name' => "Denisé's Odd & Wierd £name? #",
+                'name' => "Denisé's Odd & Wierd £name? #12345678901234567890123456789012345678901234567890123456789012345678901234567890",
                 'description' => 'Description',
                 'quantity' => 2,
                 'price' => 4.23,
@@ -224,20 +224,22 @@ public function testMixedBasketWithSpecialChars()
                 'price' => -0.10,
             ),
             array(
-                'name' => 'Second Discount',
+                // 101 character name
+                'name' => '12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901',
                 'description' => 'My 2nd Offer',
                 'quantity' => 1,
                 'price' => -1.60,
             )
         ));
 
+        // Names/descriptions should be max 100 characters in length, once invalid characters have been removed.
         $expected = '<basket><item>'
-            . '<description>Denis\'s Odd &amp; Wierd name</description><quantity>2</quantity>'
+            . '<description>Denis\'s Odd &amp; Wierd name 123456789012345678901234567890123456789012345678901234567890123456789012345</description><quantity>2</quantity>'
             . '<unitNetAmount>4.23</unitNetAmount><unitTaxAmount>0.00</unitTaxAmount>'
             . '<unitGrossAmount>4.23</unitGrossAmount><totalGrossAmount>8.46</totalGrossAmount>'
             . '</item><discounts>'
             . '<discount><fixed>0.2</fixed><description>Denis\'s "Odd"  Wierd discount? #</description></discount>'
-            . '<discount><fixed>1.6</fixed><description>Second Discount</description></discount>'
+            . '<discount><fixed>1.6</fixed><description>1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890</description></discount>'
             . '</discounts></basket>';
 
         $this->request->setItems($items);