From 3479159c7ff5c918af12e29a32367843f336b57f Mon Sep 17 00:00:00 2001
From: Slávek Banko <slavek.banko@axis.cz>
Date: Sun, 25 Mar 2018 20:20:07 +0200
Subject: kmail: Avoid setting charset on non-textual parts of emails
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
---
 kmail/kmcommands.cpp      | 7 +++----
 kmail/kmcomposewin.cpp    | 1 -
 kmail/kmkernel.cpp        | 3 ++-
 kmail/kmmessage.cpp       | 7 +++++--
 kmail/messagecomposer.cpp | 4 +++-
 5 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/kmail/kmcommands.cpp b/kmail/kmcommands.cpp
index 8b477924..a6185013 100644
--- a/kmail/kmcommands.cpp
+++ b/kmail/kmcommands.cpp
@@ -1350,13 +1350,10 @@ KMCommand::Result KMForwardAttachedCommand::execute()
     KMMessagePart *msgPart = new KMMessagePart;
     msgPart->setTypeStr("message");
     msgPart->setSubtypeStr("rfc822");
-    msgPart->setCharset(msg->charset());
     msgPart->setName("forwarded message");
     msgPart->setContentDescription(msg->from()+": "+msg->subject());
     msgPart->setContentDisposition( "inline" );
-    // THIS HAS TO BE AFTER setCte()!!!!
     msgPart->setMessageBody( KMail::Util::ByteArray( msg->asDwString() ) );
-    msgPart->setCharset("");
 
     fwdMsg->link(msg, KMMsgStatusForwarded);
     mWin->addAttach(msgPart);
@@ -2893,7 +2890,9 @@ KMCommand::Result KMResendMessageCommand::execute()
    whiteList << "To" << "Cc" << "Bcc" << "Subject";
    newMsg->sanitizeHeaders( whiteList );
 
-   newMsg->setCharset(msg->codec()->mimeName());
+   if( newMsg->type() == DwMime::kTypeText) {
+     newMsg->setCharset(msg->codec()->mimeName());
+   }
    newMsg->setParent( 0 );
 
    // make sure we have an identity set, default, if necessary
diff --git a/kmail/kmcomposewin.cpp b/kmail/kmcomposewin.cpp
index c0b66ab5..2add2b3a 100644
--- a/kmail/kmcomposewin.cpp
+++ b/kmail/kmcomposewin.cpp
@@ -3286,7 +3286,6 @@ void KMComposeWin::slotAttachProperties()
       }
     }
   }
-  if (msgPart->typeStr().lower() != "text") msgPart->setCharset(TQCString());
 }
 
 //-----------------------------------------------------------------------------
diff --git a/kmail/kmkernel.cpp b/kmail/kmkernel.cpp
index fb22fca2..f998a74c 100644
--- a/kmail/kmkernel.cpp
+++ b/kmail/kmkernel.cpp
@@ -45,6 +45,7 @@ using TDERecentAddress::RecentAddresses;
 #include "kmsystemtray.h"
 #include "transportmanager.h"
 #include "importarchivedialog.h"
+#include <mimelib/enum.h>
 
 #include <twin.h>
 #include "kmailicalifaceimpl.h"
@@ -574,7 +575,7 @@ int KMKernel::openComposer (const TQString &to, const TQString &cc,
        if( ! GlobalSettings::self()->exchangeCompatibleInvitations() ) {
         msgPart->setContentDisposition( attachContDisp );
       }
-      if( !attachCharset.isEmpty() ) {
+      if( !attachCharset.isEmpty() && (msgPart->type() == DwMime::kTypeText) ) {
         // kdDebug(5006) << "KMKernel::openComposer set attachCharset to "
         // << attachCharset << endl;
         msgPart->setCharset( attachCharset );
diff --git a/kmail/kmmessage.cpp b/kmail/kmmessage.cpp
index c33fdf6a..d9961478 100644
--- a/kmail/kmmessage.cpp
+++ b/kmail/kmmessage.cpp
@@ -3055,8 +3055,11 @@ void applyHeadersToMessagePart( DwHeaders& headers, KMMessagePart* aPart )
     DwParameter *param = ct.FirstParameter();
     while(param)
     {
-      if (!tqstricmp(param->Attribute().c_str(), "charset"))
-        aPart->setCharset(TQCString(param->Value().c_str()).lower());
+      if (!tqstricmp(param->Attribute().c_str(), "charset")) {
+        if (aPart->type() == DwMime::kTypeText) {
+          aPart->setCharset(TQCString(param->Value().c_str()).lower());
+        }
+      }
       else if (!tqstrnicmp(param->Attribute().c_str(), "name*", 5))
         aPart->setName(KMMsgBase::decodeRFC2231String(KMMsgBase::extractRFC2231HeaderField( param->Value().c_str(), "name" )));
       else {
diff --git a/kmail/messagecomposer.cpp b/kmail/messagecomposer.cpp
index 2a82da9e..9b5763dd 100644
--- a/kmail/messagecomposer.cpp
+++ b/kmail/messagecomposer.cpp
@@ -1251,7 +1251,9 @@ void MessageComposer::composeInlineOpenPGPMessage( KMMessage& theMessage,
     }
     mOldBodyPart.setContentDisposition( "inline" );
     mOldBodyPart.setOriginalContentTypeStr( oldContentType.utf8() );
-    mOldBodyPart.setCharset(mCharset);
+    if (mOldBodyPart.type() == DwMime::kTypeText) {
+      mOldBodyPart.setCharset(mCharset);
+    }
     addBodyAndAttachments( msg, splitInfo, false, false, mOldBodyPart, Kleo::InlineOpenPGPFormat );
     mMessageList.push_back( msg );
     if ( it == splitInfos.begin() ) {
-- 
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