[qmf] Use EightBit for text and email files. Contributes to JB#12571

Previously attachments with text/* or message/rfc822 encoding were
base64 encoded for no good reason. Change them to use EightBit transfer
encoding.

This fixes forwarding .eml files that previously were totally broken.
Additionally it changes behaviour for text type files which no longer
need to be base64 encoded using 25% less data.

rpm/0019-Use-EightBit-encoding-instead-of-Base64-for-text-typ.patch

@@ -0,0 +1,37 @@
+From 6648e72b7db42dac51468c5225d89b2691019572 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Tomi=20Lepp=C3=A4nen?= <tomi.leppanen@jolla.com>
+Date: Mon, 30 Sep 2019 14:11:57 +0300
+Subject: [PATCH] Use EightBit encoding instead of Base64 for text types
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Previously attachments with text/* or message/rfc822 encoding were
+base64 encoded for no good reason. Change them to use EightBit transfer
+encoding.
+
+Signed-off-by: Tomi Leppänen <tomi.leppanen@jolla.com>
+---
+ src/libraries/qmfclient/qmailmessage.cpp | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/libraries/qmfclient/qmailmessage.cpp b/src/libraries/qmfclient/qmailmessage.cpp
+index 71491f1a..d7678678 100644
+--- a/src/libraries/qmfclient/qmailmessage.cpp
++++ b/src/libraries/qmfclient/qmailmessage.cpp
+@@ -1579,7 +1579,11 @@ namespace attachments
+                 disposition.setParameter("filename*", QMailMessageContentDisposition::encodeParameter(input, "UTF-8"));
+             }
+
+-            container->appendPart(QMailMessagePart::fromFile(filePath, disposition,attach_type, QMailMessageBody::Base64,
++            QMailMessageBody::TransferEncoding te(QMailMessageBody::Base64);
++            if (attach_type.matches("text") || attach_type.matches("message", "rfc822"))
++                te = QMailMessageBody::EightBit;
++
++            container->appendPart(QMailMessagePart::fromFile(filePath, disposition, attach_type, te,
+                                                              QMailMessageBody::RequiresEncoding));
+             addedSome = true;
+         }
+-- 
+2.21.0
+

rpm/qmf-qt5.spec

@@ -46,6 +46,7 @@ Patch15: 0015-Check-if-IDLE-connection-needs-to-be-established-aft.patch
 Patch16: 0016-Revert-Fix-bundled-zlib-detection.patch
 Patch17: 0017-Add-signature-settings-in-account.patch
 Patch18: 0018-Use-socket-s-local-address-for-HELO-and-EHLO-message.patch
+Patch19: 0019-Use-EightBit-encoding-instead-of-Base64-for-text-typ.patch
 
 %description
 The Qt Messaging Framework, QMF, consists of a C++ library and daemon server
@@ -169,6 +170,7 @@ This package contains the tests for Qt Messaging Framework (QMF).
 %patch16 -p1
 %patch17 -p1
 %patch18 -p1
+%patch19 -p1
 
 %build