Merge pull request zendframework/zendframework#5570 from jeremyquinto…

…n/issue-5428-fix

fix zendframework/zendframework#5428 only read the stream contents once

src/Part.php

@@ -26,6 +26,7 @@ class Part
     public $language;
     protected $content;
     protected $isStream = false;
+    protected $filters = array();
 
 
     /**
@@ -79,6 +80,9 @@ public function getEncodedStream($EOL = Mime::LINEEND)
         //stream_filter_remove(); // ??? is that right?
         switch ($this->encoding) {
             case Mime::ENCODING_QUOTEDPRINTABLE:
+                if(array_key_exists(Mime::ENCODING_QUOTEDPRINTABLE, $this->filters)) {
+                    stream_filter_remove($this->filters[Mime::ENCODING_QUOTEDPRINTABLE]);
+                }
                 $filter = stream_filter_append(
                     $this->content,
                     'convert.quoted-printable-encode',
@@ -88,11 +92,15 @@ public function getEncodedStream($EOL = Mime::LINEEND)
                         'line-break-chars' => $EOL
                     )
                 );
+                $this->filters[Mime::ENCODING_QUOTEDPRINTABLE] = $filter;
                 if (!is_resource($filter)) {
                     throw new Exception\RuntimeException('Failed to append quoted-printable filter');
                 }
                 break;
             case Mime::ENCODING_BASE64:
+                if(array_key_exists(Mime::ENCODING_BASE64,$this->filters)) {
+                    stream_filter_remove($this->filters[Mime::ENCODING_BASE64]);
+                }
                 $filter = stream_filter_append(
                     $this->content,
                     'convert.base64-encode',
@@ -102,6 +110,7 @@ public function getEncodedStream($EOL = Mime::LINEEND)
                         'line-break-chars' => $EOL
                     )
                 );
+                $this->filters[Mime::ENCODING_BASE64] = $filter;
                 if (!is_resource($filter)) {
                     throw new Exception\RuntimeException('Failed to append base64 filter');
                 }
@@ -120,7 +129,10 @@ public function getEncodedStream($EOL = Mime::LINEEND)
     public function getContent($EOL = Mime::LINEEND)
     {
         if ($this->isStream) {
-            return stream_get_contents($this->getEncodedStream($EOL));
+            $encodedStream = $this->getEncodedStream($EOL);
+            $encodedStreamContents =  stream_get_contents($encodedStream);
+            rewind($encodedStream);
+            return $encodedStreamContents;
         }
         return Mime::encode($this->content, $this->encoding, $EOL);
     }

test/PartTest.php

@@ -103,4 +103,29 @@ public function testGetRawContentFromPart()
     {
         $this->assertEquals($this->testText, $this->part->getRawContent());
     }
+
+    /**
+     * @link https://github.com/zendframework/zf2/issues/5428
+     */
+    public function testContentEncodingWithStreamReadTwiceINaRow()
+    {
+        $testfile = realpath(__FILE__);
+        $original = file_get_contents($testfile);
+
+        $fp = fopen($testfile,'rb');
+        $part = new Mime\Part($fp);
+        $part->encoding = Mime\Mime::ENCODING_BASE64;
+        $contentEncodedFirstTime  = $part->getContent();
+        $contentEncodedSecondTime = $part->getContent();
+        $this->assertEquals($contentFirstTime, $contentSecondTime);
+        fclose($fp);
+
+        $fp = fopen($testfile,'rb');
+        $part = new Mime\Part($fp);
+        $part->encoding = Mime\Mime::ENCODING_QUOTEDPRINTABLE;
+        $contentEncodedFirstTime  = $part->getContent();
+        $contentEncodedSecondTime = $part->getContent();
+        $this->assertEquals($contentFirstTime, $contentSecondTime);
+        fclose($fp);
+    }
 }