From e69de9fa5956cff40a32be7da91d2801982b5fd4 Mon Sep 17 00:00:00 2001
From: David Grudl <david@grudl.com>
Date: Mon, 4 Dec 2017 11:10:30 +0100
Subject: [PATCH] Message: fixed wrong content type for .eml files added as
 attachment [Closes #47]

---
 src/Mail/Message.php                | 11 ++++-
 tests/Mail/Mail.attachment.eml.phpt | 63 +++++++++++++++++++++++++++++
 tests/Mail/files/example.eml        | 39 ++++++++++++++++++
 3 files changed, 111 insertions(+), 2 deletions(-)
 create mode 100644 tests/Mail/Mail.attachment.eml.phpt
 create mode 100644 tests/Mail/files/example.eml

diff --git a/src/Mail/Message.php b/src/Mail/Message.php
index 7fe4470..c2d11e4 100644
--- a/src/Mail/Message.php
+++ b/src/Mail/Message.php
@@ -298,9 +298,16 @@ private function createAttachment(string $file, string $content = null, string $
 				throw new Nette\FileNotFoundException("Unable to read file '$file'.");
 			}
 		}
+		if (!$contentType) {
+			$contentType = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $content);
+		}
+		if (!strcasecmp($contentType, 'message/rfc822')) { // not allowed for attached files
+			$contentType = 'application/octet-stream';
+		}
+
 		$part->setBody($content);
-		$part->setContentType($contentType ? $contentType : finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $content));
-		$part->setEncoding($contentType && preg_match('#(multipart|message)/#A', $contentType) ? self::ENCODING_8BIT : self::ENCODING_BASE64);
+		$part->setContentType($contentType);
+		$part->setEncoding(preg_match('#(multipart|message)/#A', $contentType) ? self::ENCODING_8BIT : self::ENCODING_BASE64);
 		$part->setHeader('Content-Disposition', $disposition . '; filename="' . Strings::fixEncoding(basename($file)) . '"');
 		return $part;
 	}
diff --git a/tests/Mail/Mail.attachment.eml.phpt b/tests/Mail/Mail.attachment.eml.phpt
new file mode 100644
index 0000000..7053b53
--- /dev/null
+++ b/tests/Mail/Mail.attachment.eml.phpt
@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * Test: Nette\Mail\Message - attachments.
+ */
+
+declare(strict_types=1);
+
+use Nette\Mail\Message;
+use Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+require __DIR__ . '/Mail.php';
+
+
+$mailer = new TestMailer;
+
+$mail = new Message;
+$mail->addAttachment(__DIR__ . '/files/example.eml', null, 'MESSAGE/RFC822');
+$mailer->send($mail);
+
+Assert::match(<<<'EOD'
+MIME-Version: 1.0
+X-Mailer: Nette Framework
+Date: %a%
+Message-ID: <%S%@%S%>
+Content-Type: multipart/mixed;
+	boundary="--------%S%"
+
+----------%S%
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 7bit
+
+
+----------%S%
+Content-Type: application/octet-stream
+Content-Transfer-Encoding: base64
+Content-Disposition: attachment; filename="example.eml"
+
+UmV0dXJuLVBhdGg6IDxleGFtcGxlQGFjbS5vcmc+DQpUbzogRXhhbXBsZSA8ZXhhbXBsZUBsaW51
+eC5sb2NhbD4NClN1YmplY3Q6IFRlc3RpbmcNCkZyb206IGV4YW1wbGUgPGV4YW1wbGVAYWNtLm9y
+Zz4NClJlcGx5LVRvOiBleGFtcGxlIDxleGFtcGxlQGFjbS5vcmc+DQpTZW5kZXI6IGV4YW1wbGVA
+YWNtLm9yZw0KTUlNRS1WZXJzaW9uOiAxLjANCkNvbnRlbnQtVHlwZTogbXVsdGlwYXJ0L21peGVk
+OyBib3VuZGFyeT0iNjUyYjhjNGRjYjAwY2RjZGRhMWUxNmFmMzY3ODFjYWYiDQpNZXNzYWdlLUlE
+OiA8MjAwNTA0MzAxOTI4MjkuMDQ4OS5leGFtcGxlQGFjbS5vcmc+DQpEYXRlOiBTYXQsIDMwIEFw
+ciAyMDA1IDE5OjI4OjI5IC0wMzAwDQoNCg0KLS02NTJiOGM0ZGNiMDBjZGNkZGExZTE2YWYzNjc4
+MWNhZg0KQ29udGVudC1UeXBlOiBtdWx0aXBhcnQvcmVsYXRlZDsgYm91bmRhcnk9IjZhODJmYjQ1
+OWRjYWFjZDQwYWIzNDA0NTI5ZTgwOGRjIg0KDQoNCi0tNmE4MmZiNDU5ZGNhYWNkNDBhYjM0MDQ1
+MjllODA4ZGMNCkNvbnRlbnQtVHlwZTogbXVsdGlwYXJ0L2FsdGVybmF0aXZlOyBib3VuZGFyeT0i
+NjljMTY4M2EzZWUxNmVmN2NmMTZlZGQ3MDA2OTRhMmYiDQoNCg0KLS02OWMxNjgzYTNlZTE2ZWY3
+Y2YxNmVkZDcwMDY5NGEyZg0KQ29udGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PUlTTy04
+ODU5LTENCkNvbnRlbnQtVHJhbnNmZXItRW5jb2Rpbmc6IHF1b3RlZC1wcmludGFibGUNCg0KVGhp
+cyBpcyBhbiBIVE1MIG1lc3NhZ2UuIFBsZWFzZSB1c2UgYW4gSFRNTCBjYXBhYmxlIG1haWwgcHJv
+Z3JhbSB0byByZWFkDQp0aGlzIG1lc3NhZ2UuDQoNCi0tNjljMTY4M2EzZWUxNmVmN2NmMTZlZGQ3
+MDA2OTRhMmYNCkNvbnRlbnQtVHlwZTogdGV4dC9odG1sOyBjaGFyc2V0PUlTTy04ODU5LTENCkNv
+bnRlbnQtVHJhbnNmZXItRW5jb2Rpbmc6IHF1b3RlZC1wcmludGFibGUNCg0KPGh0bWw+DQo8aGVh
+ZD4NCjxQPkhlbGxvPC9wPg0KPC9ib2R5Pg0KPC9odG1sPg0KLS02OWMxNjgzYTNlZTE2ZWY3Y2Yx
+NmVkZDcwMDY5NGEyZi0tDQoNCi0tNjUyYjhjNGRjYjAwY2RjZGRhMWUxNmFmMzY3ODFjYWYtLQ==
+----------%S%--
+EOD
+, TestMailer::$output);
diff --git a/tests/Mail/files/example.eml b/tests/Mail/files/example.eml
new file mode 100644
index 0000000..843befd
--- /dev/null
+++ b/tests/Mail/files/example.eml
@@ -0,0 +1,39 @@
+Return-Path: <example@acm.org>
+To: Example <example@linux.local>
+Subject: Testing
+From: example <example@acm.org>
+Reply-To: example <example@acm.org>
+Sender: example@acm.org
+MIME-Version: 1.0
+Content-Type: multipart/mixed; boundary="652b8c4dcb00cdcdda1e16af36781caf"
+Message-ID: <20050430192829.0489.example@acm.org>
+Date: Sat, 30 Apr 2005 19:28:29 -0300
+
+
+--652b8c4dcb00cdcdda1e16af36781caf
+Content-Type: multipart/related; boundary="6a82fb459dcaacd40ab3404529e808dc"
+
+
+--6a82fb459dcaacd40ab3404529e808dc
+Content-Type: multipart/alternative; boundary="69c1683a3ee16ef7cf16edd700694a2f"
+
+
+--69c1683a3ee16ef7cf16edd700694a2f
+Content-Type: text/plain; charset=ISO-8859-1
+Content-Transfer-Encoding: quoted-printable
+
+This is an HTML message. Please use an HTML capable mail program to read
+this message.
+
+--69c1683a3ee16ef7cf16edd700694a2f
+Content-Type: text/html; charset=ISO-8859-1
+Content-Transfer-Encoding: quoted-printable
+
+<html>
+<head>
+<P>Hello</p>
+</body>
+</html>
+--69c1683a3ee16ef7cf16edd700694a2f--
+
+--652b8c4dcb00cdcdda1e16af36781caf--
\ No newline at end of file