Recursive Embedded email body bug

src/Message.php

@@ -24,6 +24,11 @@ final class Message extends Message\AbstractMessage implements MessageInterface
      */
     private $rawHeaders;
 
+    /**
+     * @var null|string
+     */
+    private $rawMessage;
+
     /**
      * Constructor.
      *
@@ -84,7 +89,11 @@ public function getRawHeaders(): string
      */
     public function getRawMessage(): string
     {
-        return $this->doGetContent('');
+        if (null === $this->rawMessage) {
+            $this->rawMessage = $this->doGetContent('');
+        }
+
+        return $this->rawMessage;
     }
 
     /**

src/Message/AbstractMessage.php

@@ -126,7 +126,7 @@ final public function getSubject()
     /**
      * Get body HTML.
      *
-     * @return string | null Null if message has no HTML message part
+     * @return null|string
      */
     final public function getBodyHtml()
     {
@@ -148,7 +148,7 @@ final public function getBodyHtml()
     /**
      * Get body text.
      *
-     * @return string
+     * @return null|string
      */
     final public function getBodyText()
     {

src/Message/AbstractPart.php

@@ -229,15 +229,25 @@ final public function getParameters(): Parameters
      *
      * @return string
      */
-    public function getContent(): string
+    final public function getContent(): string
     {
         if (null === $this->content) {
-            $this->content = $this->doGetContent($this->partNumber);
+            $this->content = $this->doGetContent($this->getContentPartNumber());
         }
 
         return $this->content;
     }
 
+    /**
+     * Get content part number.
+     *
+     * @return string
+     */
+    protected function getContentPartNumber(): string
+    {
+        return $this->partNumber;
+    }
+
     /**
      * Get decoded part content.
      *
@@ -265,6 +275,23 @@ final public function getDecodedContent(): string
         return $this->decodedContent;
     }
 
+    /**
+     * Get raw message content.
+     *
+     * @param string $partNumber
+     *
+     * @return string
+     */
+    final protected function doGetContent(string $partNumber): string
+    {
+        return \imap_fetchbody(
+            $this->resource->getStream(),
+            $this->messageNumber,
+            $partNumber,
+            \FT_UID | \FT_PEEK
+        );
+    }
+
     /**
      * Part structure.
      *
@@ -407,23 +434,6 @@ final public function valid()
         return isset($this->parts[$this->key]);
     }
 
-    /**
-     * Get raw message content.
-     *
-     * @param string $partNumber
-     *
-     * @return string
-     */
-    final protected function doGetContent(string $partNumber): string
-    {
-        return \imap_fetchbody(
-            $this->resource->getStream(),
-            $this->messageNumber,
-            $partNumber,
-            \FT_UID | \FT_PEEK
-        );
-    }
-
     /**
      * Check if the given part is an attachment.
      *

src/Message/EmbeddedMessage.php

@@ -58,9 +58,24 @@ public function getRawHeaders(): string
     public function getRawMessage(): string
     {
         if (null === $this->rawMessage) {
-            $this->rawMessage = \imap_fetchbody($this->resource->getStream(), $this->messageNumber, $this->partNumber, \FT_UID | \FT_PEEK);
+            $this->rawMessage = $this->doGetContent($this->partNumber);
         }
 
         return $this->rawMessage;
     }
+
+    /**
+     * Get content part number.
+     *
+     * @return string
+     */
+    protected function getContentPartNumber(): string
+    {
+        $partNumber = $this->partNumber;
+        if (0 === \count($this->parts)) {
+            $partNumber .= '.1';
+        }
+
+        return $partNumber;
+    }
 }

tests/EmbeddedMessageTest.php

@@ -62,4 +62,47 @@ public function testEmbeddedAttachment()
 
         $embeddedAttachment->getEmbeddedMessage();
     }
+
+    public function testRecursiveEmbeddedAttachment()
+    {
+        $mailbox = $this->createMailbox();
+        $raw = $this->getFixture('four_nested_emails');
+        $mailbox->addMessage($raw);
+
+        $message = $mailbox->getMessage(1);
+        $this->assertSame('3-third-subject', $message->getSubject());
+        $this->assertSame('3-third-content', \rtrim($message->getBodyText()));
+
+        $attachments = $message->getAttachments();
+        $this->assertCount(1, $attachments);
+
+        $attachment = \current($attachments);
+        $this->assertTrue($attachment->isEmbeddedMessage());
+
+        $embeddedMessage = $attachment->getEmbeddedMessage();
+        $this->assertSame('2-second-subject', $embeddedMessage->getSubject());
+        $this->assertSame('2-second-content', \rtrim($embeddedMessage->getBodyText()));
+
+        $embeddedAttachments = $embeddedMessage->getAttachments();
+        $this->assertCount(1, $embeddedAttachments);
+
+        $embeddedAttachment = \current($embeddedAttachments);
+        $this->assertTrue($embeddedAttachment->isEmbeddedMessage());
+
+        $secondEmbeddedMessage = $embeddedAttachment->getEmbeddedMessage();
+        $this->assertSame('1-first-subject', $secondEmbeddedMessage->getSubject());
+        $this->assertSame('1-first-content', \rtrim($secondEmbeddedMessage->getBodyText()));
+
+        $secondEmbeddedAttachments = $secondEmbeddedMessage->getAttachments();
+        $this->assertCount(1, $secondEmbeddedAttachments);
+
+        $secondEmbeddedAttachment = \current($secondEmbeddedAttachments);
+        $this->assertTrue($secondEmbeddedAttachment->isEmbeddedMessage());
+
+        $thirdEmbeddedMessage = $secondEmbeddedAttachment->getEmbeddedMessage();
+        $this->assertSame('0-zero-subject', $thirdEmbeddedMessage->getSubject());
+        $this->assertSame('0-zero-content', \rtrim($thirdEmbeddedMessage->getBodyText()));
+
+        $this->assertCount(0, $thirdEmbeddedMessage->getAttachments());
+    }
 }

tests/fixtures/four_nested_emails.eml

@@ -0,0 +1,73 @@
+To: [email protected]
+From: [email protected]
+Subject: 3-third-subject
+Content-Type: multipart/mixed;
+ boundary="------------2E5D78A17C812FEFF825F7D5"
+
+This is a multi-part message in MIME format.
+--------------2E5D78A17C812FEFF825F7D5
+Content-Type: text/plain; charset=iso-8859-15; format=flowed
+Content-Transfer-Encoding: 7bit
+
+3-third-content
+
+--------------2E5D78A17C812FEFF825F7D5
+Content-Type: message/rfc822;
+ name="2-second-email.eml"
+Content-Transfer-Encoding: 7bit
+Content-Disposition: attachment;
+ filename="2-second-email.eml"
+
+To: [email protected]
+From: [email protected]
+Subject: 2-second-subject
+Content-Type: multipart/mixed;
+ boundary="------------9919377E37A03209B057D47F"
+
+This is a multi-part message in MIME format.
+--------------9919377E37A03209B057D47F
+Content-Type: text/plain; charset=iso-8859-15; format=flowed
+Content-Transfer-Encoding: 7bit
+
+2-second-content
+
+--------------9919377E37A03209B057D47F
+Content-Type: message/rfc822;
+ name="1-first-email.eml"
+Content-Transfer-Encoding: 7bit
+Content-Disposition: attachment;
+ filename="1-first-email.eml"
+
+To: [email protected]
+From: [email protected]
+Subject: 1-first-subject
+Content-Type: multipart/mixed;
+ boundary="------------0919377E37A03209B057D47A"
+
+This is a multi-part message in MIME format.
+--------------0919377E37A03209B057D47A
+Content-Type: text/plain; charset=iso-8859-15; format=flowed
+Content-Transfer-Encoding: 7bit
+
+1-first-content
+
+--------------0919377E37A03209B057D47A
+Content-Type: message/rfc822;
+ name="0-zero-email.eml"
+Content-Transfer-Encoding: 7bit
+Content-Disposition: attachment;
+ filename="0-zero-email.eml"
+
+To: [email protected]
+From: [email protected]
+Subject: 0-zero-subject
+Content-Type: text/plain; charset=iso-8859-15; format=flowed
+Content-Transfer-Encoding: 7bit
+
+0-zero-content
+
+--------------0919377E37A03209B057D47A--
+
+--------------9919377E37A03209B057D47F--
+
+--------------2E5D78A17C812FEFF825F7D5--