38 files changed, 2745 insertions, 19 deletions

diff --git a/framework/domain/CMakeLists.txt b/framework/domain/CMakeLists.txt
index ea293655..07f01367 100644
--- a/framework/domain/CMakeLists.txt
+++ b/framework/domain/CMakeLists.txt
@@ -20,9 +20,11 @@ find_package(KF5 REQUIRED COMPONENTS Package)
 add_library(mailplugin SHARED ${mailplugin_SRCS})
 
 qt5_use_modules(mailplugin Core Quick Qml WebKitWidgets)
-target_link_libraries(mailplugin actionplugin settingsplugin sink KF5::MimeTreeParser KF5::Codecs KF5::Package KF5::Async KF5::IconThemes)
+target_link_libraries(mailplugin actionplugin settingsplugin sink mimetreeparser KF5::MimeTreeParser KF5::Codecs KF5::Package KF5::Async KF5::IconThemes)
 
 add_subdirectory(actions/tests)
 
 install(TARGETS mailplugin DESTINATION ${QML_INSTALL_DIR}/org/kube/framework/domain)
 install(FILES qmldir DESTINATION ${QML_INSTALL_DIR}/org/kube/framework/domain)
+
+add_subdirectory(mimetreeparser)
\ No newline at end of file
diff --git a/framework/domain/messageparser.cpp b/framework/domain/messageparser.cpp
index ff763aec..febd1363 100644
--- a/framework/domain/messageparser.cpp
+++ b/framework/domain/messageparser.cpp
@@ -21,6 +21,10 @@
 #include "stringhtmlwriter.h"
 #include "objecttreesource.h"
 
+#include "mimetreeparser/interface.h"
+
+#include <QRegExp>
+
 #include <QFile>
 #include <QImage>
 #include <QDebug>
@@ -29,7 +33,9 @@
 #include <MimeTreeParser/ObjectTreeParser>
 #include <MimeTreeParser/MessagePart>
 
-PartModel::PartModel(QSharedPointer<MimeTreeParser::MessagePart> partTree, QMap<QByteArray, QUrl> embeddedPartMap) : mPartTree(partTree), mEmbeddedPartMap(embeddedPartMap)
+PartModel::PartModel(QSharedPointer<MimeTreeParser::MessagePart> partTree, std::shared_ptr<Parser> parser)
+    : mPartTree(partTree)
+    , mParser(parser)
 {
 }
 
@@ -73,8 +79,14 @@ QVariant PartModel::data(const QModelIndex &index, int role) const
                 // qDebug() << "Getting text: " << part->property("text").toString();
                 // FIXME: we should have a list per part, and not one for all parts.
                 auto text = part->property("htmlContent").toString();
-                for (const auto &cid : mEmbeddedPartMap.keys()) {
-                    text.replace(QString("src=\"cid:%1\"").arg(QString(cid)), QString("src=\"%1\"").arg(mEmbeddedPartMap.value(cid).toString()));
+                auto rx = QRegExp("src=(\"|')cid:([^\1]*)\1");
+                int pos  = 0;
+                while ((pos = rx.indexIn(text, pos)) != -1) {
+                    auto repl = mParser->getPart(rx.cap(2).toUtf8());
+                    if (repl.isValid()) {
+                        text.replace(rx.cap(0), QString("src=\"%1\"").arg(repl.toString()));
+                    }
+                    pos += rx.matchedLength();
                 }
                 return text;
             }
@@ -141,16 +153,31 @@ int PartModel::columnCount(const QModelIndex &parent) const
     return 1;
 }
 
+class MessagePartPrivate
+{
+public:
+    QSharedPointer<MimeTreeParser::MessagePart> mPartTree;
+    QString mHtml;
+    QMap<QByteArray, QUrl> mEmbeddedPartMap;
+    std::shared_ptr<MimeTreeParser::NodeHelper> mNodeHelper;
+    std::shared_ptr<Parser> mParser;
+};
 
 MessageParser::MessageParser(QObject *parent)
     : QObject(parent)
+    , d(std::unique_ptr<MessagePartPrivate>(new MessagePartPrivate))
+{
+
+}
+
+MessageParser::~MessageParser()
 {
 
 }
 
 QString MessageParser::html() const
 {
-    return mHtml;
+    return d->mHtml;
 }
 
 QVariant MessageParser::message() const
@@ -162,6 +189,8 @@ void MessageParser::setMessage(const QVariant &message)
 {
     QTime time;
     time.start();
+    d->mParser = std::shared_ptr<Parser>(new Parser(message.toByteArray()));
+
     const auto mailData = KMime::CRLFtoLF(message.toByteArray());
     KMime::Message::Ptr msg(new KMime::Message);
     msg->setContent(mailData);
@@ -171,20 +200,20 @@ void MessageParser::setMessage(const QVariant &message)
     // render the mail
     StringHtmlWriter htmlWriter;
     //temporary files only have the lifetime of the nodehelper, so we keep it around until the mail changes.
-    mNodeHelper = std::make_shared<MimeTreeParser::NodeHelper>();
+    d->mNodeHelper = std::make_shared<MimeTreeParser::NodeHelper>();
     ObjectTreeSource source(&htmlWriter);
-    MimeTreeParser::ObjectTreeParser otp(&source, mNodeHelper.get());
+    MimeTreeParser::ObjectTreeParser otp(&source, d->mNodeHelper.get());
 
     otp.parseObjectTree(msg.data());
-    mPartTree = otp.parsedPart().dynamicCast<MimeTreeParser::MessagePart>();
+    d->mPartTree = otp.parsedPart().dynamicCast<MimeTreeParser::MessagePart>();
 
-    mEmbeddedPartMap = htmlWriter.embeddedParts();
-    mHtml = htmlWriter.html();
+    d->mEmbeddedPartMap = htmlWriter.embeddedParts();
+    d->mHtml = htmlWriter.html();
     emit htmlChanged();
 }
 
 QAbstractItemModel *MessageParser::partTree() const
 {
-    return new PartModel(mPartTree, mEmbeddedPartMap);
+    return new PartModel(d->mPartTree, d->mParser);
 }
 
diff --git a/framework/domain/messageparser.h b/framework/domain/messageparser.h
index 3e0255df..9469f2b5 100644
--- a/framework/domain/messageparser.h
+++ b/framework/domain/messageparser.h
@@ -29,11 +29,11 @@
 #include <memory>
 #include <MimeTreeParser/MessagePart>
 
-namespace MimeTreeParser {
-    class NodeHelper;
-};
 class QAbstractItemModel;
 
+class Parser;
+class MessagePartPrivate;
+
 class MessageParser : public QObject
 {
     Q_OBJECT
@@ -43,6 +43,7 @@ class MessageParser : public QObject
 
 public:
     explicit MessageParser(QObject *parent = Q_NULLPTR);
+    ~MessageParser();
 
     QString html() const;
 
@@ -54,16 +55,13 @@ signals:
     void htmlChanged();
 
 private:
-    QSharedPointer<MimeTreeParser::MessagePart> mPartTree;
-    QString mHtml;
-    QMap<QByteArray, QUrl> mEmbeddedPartMap;
-    std::shared_ptr<MimeTreeParser::NodeHelper> mNodeHelper;
+    std::unique_ptr<MessagePartPrivate> d;
 };
 
 class PartModel : public QAbstractItemModel {
     Q_OBJECT
 public:
-    PartModel(QSharedPointer<MimeTreeParser::MessagePart> partTree, QMap<QByteArray, QUrl> embeddedPartMap);
+    PartModel(QSharedPointer<MimeTreeParser::MessagePart> partTree, std::shared_ptr<Parser> parser);
 
 public:
     enum Roles {
@@ -86,5 +84,6 @@ public:
 private:
     QSharedPointer<MimeTreeParser::MessagePart> mPartTree;
     QMap<QByteArray, QUrl> mEmbeddedPartMap;
+    std::shared_ptr<Parser> mParser;
 };
 
diff --git a/framework/domain/mimetreeparser/CMakeLists.txt b/framework/domain/mimetreeparser/CMakeLists.txt
new file mode 100644
index 00000000..e1c04893
--- /dev/null
+++ b/framework/domain/mimetreeparser/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(mimetreeparser_SRCS
+    interface.cpp
+    objecttreesource.cpp
+    stringhtmlwriter.cpp
+)
+
+add_library(mimetreeparser SHARED ${mimetreeparser_SRCS})
+
+qt5_use_modules(mimetreeparser Core Gui)
+target_link_libraries(mimetreeparser KF5::Mime KF5::MimeTreeParser)
+
+add_subdirectory(tests)
\ No newline at end of file
diff --git a/framework/domain/mimetreeparser/interface.cpp b/framework/domain/mimetreeparser/interface.cpp
new file mode 100644
index 00000000..c3ecf79c
--- /dev/null
+++ b/framework/domain/mimetreeparser/interface.cpp
@@ -0,0 +1,821 @@
+/*
+    Copyright (c) 2016 Sandro Knauß <knauss@kolabsystems.com>
+
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    This library is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+    License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to the
+    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301, USA.
+*/
+
+#include "interface.h"
+#include "interface_p.h"
+
+#include "stringhtmlwriter.h"
+#include "objecttreesource.h"
+
+#include <KMime/Content>
+#include <MimeTreeParser/ObjectTreeParser>
+#include <MimeTreeParser/MessagePart>
+#include <MimeTreeParser/NodeHelper>
+
+#include <QMimeDatabase>
+#include <QMimeType>
+#include <QDebug>
+
+class MailMimePrivate
+{
+public:
+    KMime::Content *mNode;
+    MailMime *q;
+};
+
+MailMime::MailMime()
+    : d(std::unique_ptr<MailMimePrivate>(new MailMimePrivate()))
+{
+    d->q = this;
+}
+
+bool MailMime::isFirstTextPart() const
+{
+    if (!d->mNode || !d->mNode->topLevel()) {
+        return false;
+    }
+    return (d->mNode->topLevel()->textContent() == d->mNode);
+}
+
+bool MailMime::isTopLevelPart() const
+{
+    if (!d->mNode) {
+        return false;
+    }
+    return (d->mNode->topLevel() == d->mNode);
+}
+
+MailMime::Disposition MailMime::disposition() const
+{
+    if (!d->mNode) {
+        return Invalid;
+    }
+    const auto cd = d->mNode->contentDisposition(false);
+    if (!cd) {
+        return Invalid;
+    }
+    switch (cd->disposition()){
+        case KMime::Headers::CDinline:
+            return Inline;
+        case KMime::Headers::CDattachment:
+            return Attachment;
+        default:
+            return Invalid;
+    }
+}
+
+QString MailMime::filename() const
+{
+    if (!d->mNode) {
+        return QString();
+    }
+    const auto cd = d->mNode->contentDisposition(false);
+    if (!cd) {
+        return QString();
+    }
+    return cd->filename();
+}
+
+QMimeType MailMime::mimetype() const
+{
+    if (!d->mNode) {
+        return QMimeType();
+    }
+
+    const auto ct = d->mNode->contentType(false);
+    if (!ct) {
+        return QMimeType();
+    }
+
+    QMimeDatabase mimeDb;
+    return mimeDb.mimeTypeForName(ct->mimeType());
+}
+
+class PartPrivate
+{
+public:
+    PartPrivate(Part *part);
+    void appendSubPart(Part::Ptr subpart);
+
+    QVector<Part::Ptr> subParts();
+
+    Part *parent() const;
+
+    const MailMime::Ptr &mailMime() const;
+    void createMailMime(const MimeTreeParser::MimeMessagePart::Ptr &part);
+    void createMailMime(const MimeTreeParser::TextMessagePart::Ptr &part);
+    void createMailMime(const MimeTreeParser::AlternativeMessagePart::Ptr &part);
+    void createMailMime(const MimeTreeParser::HtmlMessagePart::Ptr &part);
+
+    void appendEncryption(const MimeTreeParser::EncryptedMessagePart::Ptr &part);
+    void appendSignature(const MimeTreeParser::SignedMessagePart::Ptr &part);
+
+    void setSignatures(const QVector<Signature::Ptr> &sigs);
+    void setEncryptions(const QVector<Encryption::Ptr> &encs);
+
+    const QVector<Encryption::Ptr> &encryptions() const;
+    const QVector<Signature::Ptr> &signatures() const;
+private:
+    Part *q;
+    Part *mParent;
+    QVector<Part::Ptr> mSubParts;
+    QVector<Encryption::Ptr> mEncryptions;
+    QVector<Signature::Ptr> mSignatures;
+    MailMime::Ptr mMailMime;
+};
+
+PartPrivate::PartPrivate(Part* part)
+    : q(part)
+    , mParent(Q_NULLPTR)
+{
+
+}
+
+void PartPrivate::createMailMime(const MimeTreeParser::HtmlMessagePart::Ptr& part)
+{
+    mMailMime = MailMime::Ptr(new MailMime);
+    mMailMime->d->mNode = part->mNode;
+}
+
+void PartPrivate::createMailMime(const MimeTreeParser::AlternativeMessagePart::Ptr& part)
+{
+    mMailMime = MailMime::Ptr(new MailMime);
+    mMailMime->d->mNode = part->mNode;
+}
+
+void PartPrivate::createMailMime(const MimeTreeParser::TextMessagePart::Ptr& part)
+{
+    mMailMime = MailMime::Ptr(new MailMime);
+    mMailMime->d->mNode = part->mNode;
+}
+
+void PartPrivate::createMailMime(const MimeTreeParser::MimeMessagePart::Ptr& part)
+{
+    mMailMime = MailMime::Ptr(new MailMime);
+    mMailMime->d->mNode = part->mNode;
+}
+
+void PartPrivate::appendSubPart(Part::Ptr subpart)
+{
+    subpart->d->mParent = q;
+    mSubParts.append(subpart);
+}
+
+void PartPrivate::appendEncryption(const MimeTreeParser::EncryptedMessagePart::Ptr& part)
+{
+    mEncryptions.append(Encryption::Ptr(new Encryption));
+}
+
+void PartPrivate::setEncryptions(const QVector< Encryption::Ptr >& encs)
+{
+    mEncryptions = encs;
+}
+
+void PartPrivate::appendSignature(const MimeTreeParser::SignedMessagePart::Ptr& part)
+{
+    mSignatures.append(Signature::Ptr(new Signature));
+}
+
+
+void PartPrivate::setSignatures(const QVector< Signature::Ptr >& sigs)
+{
+    mSignatures = sigs;
+}
+
+Part *PartPrivate::parent() const
+{
+    return mParent;
+}
+
+QVector< Part::Ptr > PartPrivate::subParts()
+{
+    return mSubParts;
+}
+
+const MailMime::Ptr& PartPrivate::mailMime() const
+{
+    return mMailMime;
+}
+
+const QVector< Encryption::Ptr >& PartPrivate::encryptions() const
+{
+    return mEncryptions;
+}
+
+const QVector< Signature::Ptr >& PartPrivate::signatures() const
+{
+    return mSignatures;
+}
+
+Part::Part()
+    : d(std::unique_ptr<PartPrivate>(new PartPrivate(this)))
+{
+
+}
+
+bool Part::hasSubParts() const
+{
+    return !subParts().isEmpty();
+}
+
+QVector<Part::Ptr> Part::subParts() const
+{
+    return d->subParts();
+}
+
+QByteArray Part::type() const
+{
+    return "Part";
+}
+
+QVector<QByteArray> Part::availableContents() const
+{
+    return QVector<QByteArray>();
+}
+
+QVector<Content::Ptr> Part::content() const
+{
+    return content(availableContents().first());
+}
+
+QVector<Content::Ptr> Part::content(const QByteArray& ct) const
+{
+    return QVector<Content::Ptr>();
+}
+
+QVector<Encryption::Ptr> Part::encryptions() const
+{
+    auto ret = d->encryptions();
+    auto parent = d->parent();
+    if (parent) {
+        ret.append(parent->encryptions());
+    }
+    return ret;
+}
+
+QVector<Signature::Ptr> Part::signatures() const
+{
+    auto ret = d->signatures();
+    auto parent = d->parent();
+    if (parent) {
+        ret.append(parent->signatures());
+    }
+    return ret;
+}
+
+MailMime::Ptr Part::mailMime() const
+{
+    return d->mailMime();
+}
+
+class ContentPrivate
+{
+public:
+    QByteArray mContent;
+    QByteArray mCodec;
+    Part *mParent;
+    Content *q;
+    MailMime::Ptr mMailMime;
+    QVector<Encryption::Ptr> mEncryptions;
+    QVector<Signature::Ptr> mSignatures;
+    void appendSignature(const MimeTreeParser::SignedMessagePart::Ptr &sig);
+    void appendEncryption(const MimeTreeParser::EncryptedMessagePart::Ptr &enc);
+};
+
+void ContentPrivate::appendEncryption(const MimeTreeParser::EncryptedMessagePart::Ptr& enc)
+{
+    mEncryptions.append(Encryption::Ptr(new Encryption));
+}
+
+void ContentPrivate::appendSignature(const MimeTreeParser::SignedMessagePart::Ptr& sig)
+{
+    mSignatures.append(Signature::Ptr(new Signature));
+}
+
+
+Content::Content(const QByteArray& content, Part *parent)
+    : d(std::unique_ptr<ContentPrivate>(new ContentPrivate))
+{
+    d->q = this;
+    d->mContent = content;
+    d->mCodec = "utf-8";
+    d->mParent = parent;
+}
+
+Content::Content(ContentPrivate* d_ptr)
+    : d(std::unique_ptr<ContentPrivate>(d_ptr))
+{
+    d->q = this;
+}
+
+Content::~Content()
+{
+}
+
+QVector<Encryption::Ptr> Content::encryptions() const
+{
+    auto ret = d->mEncryptions;
+    if (d->mParent) {
+        ret.append(d->mParent->encryptions());
+    }
+    return ret;
+}
+
+QVector<Signature::Ptr> Content::signatures() const
+{
+    auto ret = d->mSignatures;
+    if (d->mParent) {
+        ret.append(d->mParent->signatures());
+    }
+    return ret;
+}
+
+QByteArray Content::content() const
+{
+    return d->mContent;
+}
+
+QByteArray Content::charset() const
+{
+    return d->mCodec;
+}
+
+QByteArray Content::type() const
+{
+    return "Content";
+}
+
+MailMime::Ptr Content::mailMime() const
+{
+    if (d->mMailMime) {
+        return d->mMailMime;
+    } else {
+        return d->mParent->mailMime();
+    }
+}
+
+Part *Content::parent() const
+{
+    return d->mParent;
+}
+
+HtmlContent::HtmlContent(const QByteArray& content, Part* parent)
+    : Content(content, parent)
+{
+
+}
+
+QByteArray HtmlContent::type() const
+{
+    return "HtmlContent";
+}
+
+PlainTextContent::PlainTextContent(const QByteArray& content, Part* parent)
+    : Content(content, parent)
+{
+
+}
+
+PlainTextContent::PlainTextContent(ContentPrivate* d_ptr)
+    : Content(d_ptr)
+{
+
+}
+
+HtmlContent::HtmlContent(ContentPrivate* d_ptr)
+    : Content(d_ptr)
+{
+
+}
+
+
+QByteArray PlainTextContent::type() const
+{
+    return "PlainTextContent";
+}
+
+class AlternativePartPrivate
+{
+public:
+    void fillFrom(MimeTreeParser::AlternativeMessagePart::Ptr part);
+
+    QVector<Content::Ptr> content(const QByteArray &ct) const;
+
+    AlternativePart *q;
+
+    QVector<QByteArray> types() const;
+
+private:
+    QMap<QByteArray, QVector<Content::Ptr>> mContent;
+    QVector<QByteArray> mTypes;
+};
+
+void AlternativePartPrivate::fillFrom(MimeTreeParser::AlternativeMessagePart::Ptr part)
+{
+    mTypes = QVector<QByteArray>() << "html" << "plaintext";
+
+    Content::Ptr content = std::make_shared<HtmlContent>(part->htmlContent().toLocal8Bit(), q);
+    mContent["html"].append(content);
+    content = std::make_shared<PlainTextContent>(part->plaintextContent().toLocal8Bit(), q);
+    mContent["plaintext"].append(content);
+    q->reachParentD()->createMailMime(part);
+}
+
+QVector<QByteArray> AlternativePartPrivate::types() const
+{
+    return mTypes;
+}
+
+QVector<Content::Ptr> AlternativePartPrivate::content(const QByteArray& ct) const
+{
+    return mContent[ct];
+}
+
+AlternativePart::AlternativePart()
+    : d(std::unique_ptr<AlternativePartPrivate>(new AlternativePartPrivate))
+{
+    d->q = this;
+}
+
+AlternativePart::~AlternativePart()
+{
+
+}
+
+QByteArray AlternativePart::type() const
+{
+    return "AlternativePart";
+}
+
+QVector<QByteArray> AlternativePart::availableContents() const
+{
+    return d->types();
+}
+
+QVector<Content::Ptr> AlternativePart::content(const QByteArray& ct) const
+{
+    return d->content(ct);
+}
+
+PartPrivate* AlternativePart::reachParentD() const
+{
+    return Part::d.get();
+}
+
+class SinglePartPrivate
+{
+public:
+    void fillFrom(MimeTreeParser::TextMessagePart::Ptr part);
+    void fillFrom(MimeTreeParser::HtmlMessagePart::Ptr part);
+    void fillFrom(MimeTreeParser::AttachmentMessagePart::Ptr part);
+    SinglePart *q;
+
+    QVector<Content::Ptr> mContent;
+    QByteArray mType;
+};
+
+void SinglePartPrivate::fillFrom(MimeTreeParser::TextMessagePart::Ptr part)
+{
+    mType = "plaintext";
+    mContent.clear();
+    foreach (const auto &mp, part->subParts()) {
+        auto d_ptr = new ContentPrivate;
+        d_ptr->mContent = part->text().toLocal8Bit();
+        d_ptr->mParent = q;
+        d_ptr->mCodec = "utf-8";
+        const auto enc = mp.dynamicCast<MimeTreeParser::EncryptedMessagePart>();
+        auto sig = mp.dynamicCast<MimeTreeParser::SignedMessagePart>();
+        if (enc) {
+           d_ptr->appendEncryption(enc);
+           const auto s = enc->subParts();
+           if (s.size() == 1) {
+               sig = s[0].dynamicCast<MimeTreeParser::SignedMessagePart>();
+           }
+        }
+        if (sig) {
+           d_ptr->appendSignature(sig);
+        }
+        mContent.append(std::make_shared<PlainTextContent>(d_ptr));
+        q->reachParentD()->createMailMime(part);
+    }
+}
+
+void SinglePartPrivate::fillFrom(MimeTreeParser::HtmlMessagePart::Ptr part)
+{
+    mType = "html";
+    mContent.clear();
+    mContent.append(std::make_shared<HtmlContent>(part->text().toLocal8Bit(), q));
+    q->reachParentD()->createMailMime(part);
+}
+
+void SinglePartPrivate::fillFrom(MimeTreeParser::AttachmentMessagePart::Ptr part)
+{
+   q->reachParentD()->createMailMime(part.staticCast<MimeTreeParser::TextMessagePart>());
+   mType = q->mailMime()->mimetype().name().toUtf8();
+   mContent.clear();
+   mContent.append(std::make_shared<Content>(part->text().toLocal8Bit(), q));
+}
+
+SinglePart::SinglePart()
+    : d(std::unique_ptr<SinglePartPrivate>(new SinglePartPrivate))
+{
+    d->q = this;
+}
+
+SinglePart::~SinglePart()
+{
+
+}
+
+QVector<QByteArray> SinglePart::availableContents() const
+{
+    return QVector<QByteArray>() << d->mType;
+}
+
+QVector< Content::Ptr > SinglePart::content(const QByteArray &ct) const
+{
+    if (ct == d->mType) {
+        return d->mContent;
+    }
+    return QVector<Content::Ptr>();
+}
+
+QByteArray SinglePart::type() const
+{
+    return "SinglePart";
+}
+
+PartPrivate* SinglePart::reachParentD() const
+{
+    return Part::d.get();
+}
+
+class SignaturePrivate
+{
+public:
+    Signature *q;
+};
+
+Signature::Signature()
+    :d(std::unique_ptr<SignaturePrivate>(new SignaturePrivate))
+{
+    d->q = this;
+}
+
+
+Signature::Signature(SignaturePrivate *d_ptr)
+    :d(std::unique_ptr<SignaturePrivate>(d_ptr))
+{
+    d->q = this;
+}
+
+Signature::~Signature()
+{
+
+}
+
+
+class EncryptionPrivate
+{
+public:
+    Encryption *q;
+};
+
+Encryption::Encryption(EncryptionPrivate *d_ptr)
+    :d(std::unique_ptr<EncryptionPrivate>(d_ptr))
+{
+    d->q = this;
+}
+
+Encryption::Encryption()
+    :d(std::unique_ptr<EncryptionPrivate>(new EncryptionPrivate))
+{
+    d->q = this;
+}
+
+Encryption::~Encryption()
+{
+
+}
+
+ParserPrivate::ParserPrivate(Parser* parser)
+    : q(parser)
+    , mNodeHelper(std::make_shared<MimeTreeParser::NodeHelper>())
+{
+
+}
+
+void ParserPrivate::setMessage(const QByteArray& mimeMessage)
+{
+    const auto mailData = KMime::CRLFtoLF(mimeMessage);
+    mMsg = KMime::Message::Ptr(new KMime::Message);
+    mMsg->setContent(mailData);
+    mMsg->parse();
+
+    // render the mail
+    StringHtmlWriter htmlWriter;
+    ObjectTreeSource source(&htmlWriter);
+    MimeTreeParser::ObjectTreeParser otp(&source, mNodeHelper.get());
+
+    otp.parseObjectTree(mMsg.data());
+    mPartTree = otp.parsedPart().dynamicCast<MimeTreeParser::MessagePart>();
+
+    mEmbeddedPartMap = htmlWriter.embeddedParts();
+    mHtml = htmlWriter.html();
+
+    mTree = std::make_shared<Part>();
+    createTree(mPartTree, mTree);
+}
+
+
+void ParserPrivate::createTree(const MimeTreeParser::MessagePart::Ptr &start, const Part::Ptr &tree)
+{
+    foreach (const auto &mp, start->subParts()) {
+        const auto m = mp.dynamicCast<MimeTreeParser::MessagePart>();
+        const auto text = mp.dynamicCast<MimeTreeParser::TextMessagePart>();
+        const auto alternative = mp.dynamicCast<MimeTreeParser::AlternativeMessagePart>();
+        const auto html = mp.dynamicCast<MimeTreeParser::HtmlMessagePart>();
+        const auto attachment = mp.dynamicCast<MimeTreeParser::AttachmentMessagePart>();
+         if (attachment) {
+            auto part = std::make_shared<SinglePart>();
+            part->d->fillFrom(attachment);
+            tree->d->appendSubPart(part);
+         } else if (text) {
+            auto part = std::make_shared<SinglePart>();
+            part->d->fillFrom(text);
+            tree->d->appendSubPart(part);
+        } else if (alternative) {
+            auto part = std::make_shared<AlternativePart>();
+            part->d->fillFrom(alternative);
+            tree->d->appendSubPart(part);
+        } else if (html) {
+            auto part = std::make_shared<SinglePart>();
+            part->d->fillFrom(html);
+            tree->d->appendSubPart(part);
+        } else {
+            const auto enc = mp.dynamicCast<MimeTreeParser::EncryptedMessagePart>();
+            const auto sig = mp.dynamicCast<MimeTreeParser::SignedMessagePart>();
+            if (enc || sig) {
+                auto subTree =  std::make_shared<Part>();
+                if (enc) {
+                    subTree->d->appendEncryption(enc);
+                }
+                if (sig) {
+                    subTree->d->appendSignature(sig);
+                }
+                createTree(m, subTree);
+                foreach(const auto &p, subTree->subParts()) {
+                    tree->d->appendSubPart(p);
+                    if (enc) {
+                        p->d->setEncryptions(subTree->d->encryptions());
+                    }
+                    if (sig) {
+                        p->d->setSignatures(subTree->d->signatures());
+                    }
+                }
+            } else {
+                createTree(m, tree);
+            }
+        }
+    }
+}
+
+Parser::Parser(const QByteArray& mimeMessage)
+    :d(std::unique_ptr<ParserPrivate>(new ParserPrivate(this)))
+{
+    d->setMessage(mimeMessage);
+}
+
+Parser::~Parser()
+{
+}
+
+QUrl Parser::getPart(const QByteArray &cid)
+{
+    return d->mEmbeddedPartMap.value(cid);
+}
+
+QVector<Part::Ptr> Parser::collectContentParts() const
+{
+    return collect(d->mTree, [](const Part::Ptr &p){return p->type() != "EncapsulatedPart";},
+                             [](const Content::Ptr &content){
+                                    const auto mime = content->mailMime();
+
+                                    if (!mime) {
+                                        return true;
+                                    }
+
+                                    if (mime->isFirstTextPart()) {
+                                        return true;
+                                    }
+
+                                    {
+                                        const auto parent = content->parent();
+                                        if (parent) {
+                                            const auto _mime = parent->mailMime();
+                                            if (_mime && (_mime->isTopLevelPart() || _mime->isFirstTextPart())) {
+                                                return true;
+                                            }
+                                        }
+                                    }
+                                    const auto cd = mime->disposition();
+                                    if (cd && cd == MailMime::Inline) {
+                                        // explict "inline" disposition:
+                                        return true;
+                                    }
+                                    if (cd && cd == MailMime::Attachment) {
+                                        // explicit "attachment" disposition:
+                                        return false;
+                                    }
+
+                                    const auto ct = mime->mimetype();
+                                    if (ct.name().trimmed().toLower() == "text" && ct.name().trimmed().isEmpty() &&
+                                        (!mime || mime->filename().trimmed().isEmpty())) {
+                                        // text/* w/o filename parameter:
+                                        return true;
+                                    }
+                                    return false;
+                             });
+}
+
+
+QVector<Part::Ptr> Parser::collectAttachmentParts() const
+{
+    return collect(d->mTree, [](const Part::Ptr &p){return p->type() != "EncapsulatedPart";},
+                             [](const Content::Ptr &content){
+                                    const auto mime = content->mailMime();
+
+                                    if (!mime) {
+                                        return false;
+                                    }
+
+                                    if (mime->isFirstTextPart()) {
+                                        return false;
+                                    }
+
+                                    {
+                                        const auto parent = content->parent();
+                                        if (parent) {
+                                            const auto _mime = parent->mailMime();
+                                            if (_mime && (_mime->isTopLevelPart() || _mime->isFirstTextPart())) {
+                                                return false;
+                                            }
+                                        }
+                                    }
+                                    const auto cd = mime->disposition();
+                                    if (cd && cd == MailMime::Inline) {
+                                        // explict "inline" disposition:
+                                        return false;
+                                    }
+                                    if (cd && cd == MailMime::Attachment) {
+                                        // explicit "attachment" disposition:
+                                        return true;
+                                    }
+
+                                    const auto ct = mime->mimetype();
+                                    if (ct.name().trimmed().toLower() == "text" && ct.name().trimmed().isEmpty() &&
+                                        (!mime || mime->filename().trimmed().isEmpty())) {
+                                        // text/* w/o filename parameter:
+                                        return false;
+                                    }
+                                    return true;
+                             });
+}
+QVector<Part::Ptr> Parser::collect(const Part::Ptr &start, std::function<bool(const Part::Ptr &)> select, std::function<bool(const Content::Ptr &)> filter) const
+{
+    QVector<Part::Ptr> ret;
+    foreach (const auto &part, start->subParts()) {
+        QVector<QByteArray> contents;
+        foreach(const auto &ct, part->availableContents()) {
+            foreach(const auto &content, part->content(ct)) {
+                if (filter(content)) {
+                    contents.append(ct);
+                    break;
+                }
+            }
+        }
+        if (!contents.isEmpty()) {
+            ret.append(part);
+        }
+        if (select(part)){
+            ret += collect(part, select, filter);
+        }
+    }
+    return ret;
+}
\ No newline at end of file
diff --git a/framework/domain/mimetreeparser/interface.h b/framework/domain/mimetreeparser/interface.h
new file mode 100644
index 00000000..7eadc311
--- /dev/null
+++ b/framework/domain/mimetreeparser/interface.h
@@ -0,0 +1,368 @@
+/*
+    Copyright (c) 2016 Sandro Knauß <knauss@kolabsystems.com>
+
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    This library is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+    License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to the
+    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301, USA.
+*/
+
+#pragma once
+
+#include <functional>
+#include <memory>
+
+#include <QDateTime>
+#include <QUrl>
+#include <QMimeType>
+
+class Part;
+class PartPrivate;
+
+class MailMime;
+class MailMimePrivate;
+
+class AlternativePart;
+class AlternativePartPrivate;
+
+class SinglePart;
+class SinglePartPrivate;
+
+class EncryptionPart;
+class EncryptionPartPrivate;
+
+class EncapsulatedPart;
+class EncapsulatedPartPrivate;
+
+class Content;
+class ContentPrivate;
+
+class CertContent;
+class CertContentPrivate;
+
+class EncryptionError;
+
+class Key;
+class Signature;
+class SignaturePrivate;
+class Encryption;
+class EncryptionPrivate;
+
+typedef std::shared_ptr<Signature> SignaturePtr;
+typedef std::shared_ptr<Encryption> EncryptionPtr;
+
+class Parser;
+class ParserPrivate;
+
+/* 
+ * A MessagePart that is based on a KMime::Content
+ */
+class MailMime
+{
+public:
+    typedef std::shared_ptr<MailMime> Ptr;
+    /**
+     *  Various possible values for the "Content-Disposition" header.
+     */
+    enum Disposition {
+        Invalid,           ///< Default, invalid value
+        Inline,            ///< inline
+        Attachment        ///< attachment
+    };
+
+    MailMime();
+
+    // interessting header parts of a KMime::Content
+    QMimeType mimetype() const;
+    Disposition disposition() const;
+    QUrl label() const;
+    QByteArray cid() const;
+    QByteArray charset() const;
+    QString filename() const;
+
+    // Unique identifier to ecactly this KMime::Content
+    QByteArray link() const;
+
+    QByteArray content() const;
+    //Use default charset
+    QString encodedContent() const;
+
+    // overwrite default charset with given charset
+    QString encodedContent(QByteArray charset) const;
+
+    bool isFirstTextPart() const;
+    bool isTopLevelPart() const;
+
+private:
+    std::unique_ptr<MailMimePrivate> d;
+
+    friend class PartPrivate;
+};
+
+class Content
+{
+public:
+    typedef std::shared_ptr<Content> Ptr;
+    Content(const QByteArray &content, Part *parent);
+    Content(ContentPrivate *d_ptr);
+    virtual ~Content();
+
+    QByteArray content() const;
+
+    QByteArray charset() const;
+
+    //Use default charset
+    QString encodedContent() const;
+
+    // overwrite default charset with given charset
+    QString encodedContent(QByteArray charset) const;
+
+    QVector<SignaturePtr> signatures() const;
+    QVector<EncryptionPtr> encryptions() const;
+    MailMime::Ptr mailMime() const;
+    virtual QByteArray type() const;
+    Part* parent() const;
+private:
+    std::unique_ptr<ContentPrivate> d;
+};
+
+class PlainTextContent : public Content
+{
+public:
+    PlainTextContent(const QByteArray &content, Part *parent);
+    PlainTextContent(ContentPrivate *d_ptr);
+    QByteArray type() const Q_DECL_OVERRIDE;
+};
+
+class HtmlContent : public Content
+{
+public:
+    HtmlContent(const QByteArray &content, Part *parent);
+    HtmlContent(ContentPrivate* d_ptr);
+    QByteArray type() const Q_DECL_OVERRIDE;
+};
+
+/*
+ * importing a cert GpgMe::ImportResult
+ * checking a cert (if it is a valid cert)
+ */
+
+class CertContent : public Content
+{
+public:
+    typedef std::shared_ptr<CertContent> Ptr;
+    CertContent(const QByteArray &content, Part *parent);
+
+    QByteArray type() const Q_DECL_OVERRIDE;
+    enum CertType {
+        Pgp,
+        SMime
+    };
+
+    enum CertSubType {
+        Public,
+        Private
+    };
+
+    CertType certType() const;
+    CertSubType certSubType() const;
+    int keyLength() const;
+
+private:
+    std::unique_ptr<CertContentPrivate> d;
+};
+
+class Part
+{
+public:
+    typedef std::shared_ptr<Part> Ptr;
+    Part();
+    virtual QByteArray type() const;
+
+    virtual QVector<QByteArray> availableContents() const;
+    virtual QVector<Content::Ptr> content(const QByteArray& ct) const;
+    QVector<Content::Ptr> content() const;
+
+    bool hasSubParts() const;
+    QVector<Part::Ptr> subParts() const;
+    Part *parent() const;
+
+    QVector<SignaturePtr> signatures() const;
+    QVector<EncryptionPtr> encryptions() const;
+    virtual MailMime::Ptr mailMime() const;
+protected:
+    std::unique_ptr<PartPrivate> d;
+private:
+    friend class ParserPrivate;
+    friend class PartPrivate;
+};
+
+class AlternativePart : public Part
+{
+public:
+    typedef std::shared_ptr<AlternativePart> Ptr;
+
+    AlternativePart();
+    virtual ~AlternativePart();
+
+    QVector<QByteArray> availableContents() const Q_DECL_OVERRIDE;
+    QVector<Content::Ptr> content(const QByteArray& ct) const Q_DECL_OVERRIDE;
+
+    QByteArray type() const Q_DECL_OVERRIDE;
+
+private:
+    PartPrivate *reachParentD() const;
+    std::unique_ptr<AlternativePartPrivate> d;
+
+    friend class ParserPrivate;
+    friend class AlternativePartPrivate;
+};
+
+class SinglePart : public Part
+{
+ public:
+    typedef std::shared_ptr<SinglePart> Ptr;
+
+    SinglePart();
+    virtual ~SinglePart();
+
+    QVector<Content::Ptr> content(const QByteArray& ct) const Q_DECL_OVERRIDE;
+    QVector<QByteArray> availableContents() const Q_DECL_OVERRIDE;
+
+    QByteArray type() const Q_DECL_OVERRIDE;
+private:
+    PartPrivate *reachParentD() const;
+    std::unique_ptr<SinglePartPrivate> d;
+
+    friend class ParserPrivate;
+    friend class SinglePartPrivate;
+};
+
+
+class EncryptionPart : public Part
+{
+public:
+    typedef std::shared_ptr<EncryptionPart> Ptr;
+    QByteArray type() const Q_DECL_OVERRIDE;
+
+    EncryptionError error() const;
+private:
+    std::unique_ptr<EncryptionPartPrivate> d;    
+};
+
+
+/*
+ * we want to request complete headers like:
+ * from/to...
+ */
+
+class EncapsulatedPart : public SinglePart
+{
+public:
+    typedef std::shared_ptr<EncapsulatedPart> Ptr;
+    QByteArray type() const Q_DECL_OVERRIDE;
+
+    //template <class T> QByteArray header<T>();
+private:
+    std::unique_ptr<EncapsulatedPartPrivate> d;    
+};
+
+class EncryptionError
+{
+public:
+    int errorId() const;
+    QString errorString() const;
+};
+
+class Key
+{
+    QString keyid() const;
+    QString name() const;
+    QString email() const;
+    QString comment() const;
+    QVector<QString> emails() const;
+    enum KeyTrust {
+        Unknown, Undefined, Never, Marginal, Full, Ultimate
+    };
+    KeyTrust keyTrust() const;
+
+    bool isRevokation() const;
+    bool isInvalid() const;
+    bool isExpired() const;
+
+    std::vector<Key> subkeys();
+    Key parentkey() const;
+};
+
+class Signature
+{
+public:
+    typedef std::shared_ptr<Signature> Ptr;
+    Signature();
+    Signature(SignaturePrivate *);
+    ~Signature();
+
+    Key key() const;
+    QDateTime creationDateTime() const;
+    QDateTime expirationTime() const;
+    bool neverExpires() const;
+
+    //template <> StatusObject<SignatureVerificationResult> verify() const;
+    private:
+        std::unique_ptr<SignaturePrivate> d;
+};
+
+/*
+ * Normally the Keys for encryption are subkeys
+ * for clients the parentkeys are "more interessting", because they store the name, email etc.
+ * but a client may also wants show to what subkey the mail is really encrypted, an if this subkey isRevoked or something else
+ */
+class Encryption
+{
+public:
+    typedef std::shared_ptr<Encryption> Ptr;
+    Encryption();
+    Encryption(EncryptionPrivate *);
+    ~Encryption();
+    std::vector<Key> recipients() const;
+private:
+    std::unique_ptr<EncryptionPrivate> d;
+};
+
+class Parser
+{
+public:
+    typedef std::shared_ptr<Parser> Ptr;
+    Parser(const QByteArray &mimeMessage);
+    ~Parser();
+
+    Part::Ptr getPart(QUrl url);
+    QUrl getPart(const QByteArray &cid);
+
+    QVector<Part::Ptr> collect(const Part::Ptr &start, std::function<bool(const Part::Ptr &)> select, std::function<bool(const Content::Ptr &)> filter) const;
+    QVector<Part::Ptr> collectContentParts() const;
+    QVector<Part::Ptr> collectAttachmentParts() const;
+    //template <> QVector<ContentPart::Ptr> collect<ContentPart>() const;
+
+    //template <> static StatusObject<SignatureVerificationResult> verifySignature(const Signature signature) const;
+    //template <> static StatusObject<Part> decrypt(const EncryptedPart part) const;
+
+signals:
+    void partsChanged();
+
+private:
+    std::unique_ptr<ParserPrivate> d;
+
+    friend class InterfaceTest;
+};
+
diff --git a/framework/domain/mimetreeparser/interface_p.h b/framework/domain/mimetreeparser/interface_p.h
new file mode 100644
index 00000000..55d1a5cc
--- /dev/null
+++ b/framework/domain/mimetreeparser/interface_p.h
@@ -0,0 +1,56 @@
+/*
+    Copyright (c) 2016 Sandro Knauß <knauss@kolabsystems.com>
+
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    This library is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+    License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to the
+    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301, USA.
+*/
+
+#pragma once
+
+#include "interface.h"
+
+#include <QSharedPointer>
+#include <QMap>
+
+namespace KMime
+{
+    class Message;
+    typedef QSharedPointer<Message> MessagePtr;
+}
+
+namespace MimeTreeParser
+{
+    class MessagePart;
+    class NodeHelper;
+    typedef QSharedPointer<MessagePart> MessagePartPtr;
+}
+
+class ParserPrivate
+{
+public:
+    ParserPrivate(Parser *parser);
+
+    void setMessage(const QByteArray &mimeMessage);
+    void createTree(const MimeTreeParser::MessagePartPtr& start, const Part::Ptr& tree);
+
+    Part::Ptr mTree;
+    Parser *q;
+
+    MimeTreeParser::MessagePartPtr mPartTree;
+    KMime::MessagePtr mMsg;
+    std::shared_ptr<MimeTreeParser::NodeHelper> mNodeHelper;
+    QString mHtml;
+    QMap<QByteArray, QUrl> mEmbeddedPartMap;
+};
\ No newline at end of file
diff --git a/framework/domain/mimetreeparser/objecttreesource.cpp b/framework/domain/mimetreeparser/objecttreesource.cpp
new file mode 100644
index 00000000..58667444
--- /dev/null
+++ b/framework/domain/mimetreeparser/objecttreesource.cpp
@@ -0,0 +1,147 @@
+/*
+  Copyright (C) 2009 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.net
+  Copyright (c) 2009 Andras Mantia <andras@kdab.net>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along
+  with this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+#include "objecttreesource.h"
+
+#include <MimeTreeParser/AttachmentStrategy>
+#include <MimeTreeParser/BodyPartFormatterBaseFactory>
+#include <MimeTreeParser/MessagePart>
+#include <MimeTreeParser/MessagePartRenderer>
+
+class ObjectSourcePrivate
+{
+public:
+    ObjectSourcePrivate()
+        : mWriter(0)
+        , mAllowDecryption(true)
+        , mHtmlLoadExternal(true)
+        , mPreferredMode(MimeTreeParser::Util::Html)
+    {
+
+    }
+    MimeTreeParser::HtmlWriter *mWriter;
+    MimeTreeParser::BodyPartFormatterBaseFactory mBodyPartFormatterBaseFactory;
+    bool mAllowDecryption;
+    bool mHtmlLoadExternal;
+    MimeTreeParser::Util::HtmlMode mPreferredMode;
+};
+
+ObjectTreeSource::ObjectTreeSource(MimeTreeParser::HtmlWriter *writer)
+        : MimeTreeParser::Interface::ObjectTreeSource()
+        , d(new ObjectSourcePrivate)
+    {
+        d->mWriter = writer;
+    }
+
+ObjectTreeSource::~ObjectTreeSource()
+{
+    delete d;
+}
+
+void ObjectTreeSource::setAllowDecryption(bool allowDecryption)
+{
+    d->mAllowDecryption = allowDecryption;
+}
+
+MimeTreeParser::HtmlWriter *ObjectTreeSource::htmlWriter()
+{
+    return d->mWriter;
+}
+
+bool ObjectTreeSource::htmlLoadExternal() const
+{
+    return d->mHtmlLoadExternal;
+}
+
+void ObjectTreeSource::setHtmlLoadExternal(bool loadExternal)
+{
+    d->mHtmlLoadExternal = loadExternal;
+}
+
+bool ObjectTreeSource::decryptMessage() const
+{
+    return d->mAllowDecryption;
+}
+
+bool ObjectTreeSource::showSignatureDetails() const
+{
+    return true;
+}
+
+int ObjectTreeSource::levelQuote() const
+{
+    return 1;
+}
+
+const QTextCodec *ObjectTreeSource::overrideCodec()
+{
+    return Q_NULLPTR;
+}
+
+QString ObjectTreeSource::createMessageHeader(KMime::Message *message)
+{
+    return QString();
+}
+
+const MimeTreeParser::AttachmentStrategy *ObjectTreeSource::attachmentStrategy()
+{
+    return MimeTreeParser::AttachmentStrategy::smart();
+}
+
+QObject *ObjectTreeSource::sourceObject()
+{
+    return Q_NULLPTR;
+}
+
+void ObjectTreeSource::setHtmlMode(MimeTreeParser::Util::HtmlMode mode, const QList<MimeTreeParser::Util::HtmlMode> &availableModes)
+{
+      Q_UNUSED(mode);
+      Q_UNUSED(availableModes);
+}
+
+MimeTreeParser::Util::HtmlMode ObjectTreeSource::preferredMode() const
+{
+    return d->mPreferredMode;
+}
+
+bool ObjectTreeSource::autoImportKeys() const
+{
+    return false;
+}
+
+bool ObjectTreeSource::showEmoticons() const
+{
+    return false;
+}
+
+bool ObjectTreeSource::showExpandQuotesMark() const
+{
+    return false;
+}
+
+const MimeTreeParser::BodyPartFormatterBaseFactory *ObjectTreeSource::bodyPartFormatterFactory()
+{
+    return &(d->mBodyPartFormatterBaseFactory);
+}
+
+MimeTreeParser::Interface::MessagePartRenderer::Ptr ObjectTreeSource::messagePartTheme(MimeTreeParser::Interface::MessagePart::Ptr msgPart)
+{
+    Q_UNUSED(msgPart);
+    return MimeTreeParser::Interface::MessagePartRenderer::Ptr();
+}
diff --git a/framework/domain/mimetreeparser/objecttreesource.h b/framework/domain/mimetreeparser/objecttreesource.h
new file mode 100644
index 00000000..42433e71
--- /dev/null
+++ b/framework/domain/mimetreeparser/objecttreesource.h
@@ -0,0 +1,56 @@
+/*
+  Copyright (C) 2009 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.net
+  Copyright (c) 2009 Andras Mantia <andras@kdab.net>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along
+  with this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+#ifndef MAILVIEWER_OBJECTTREEEMPTYSOURCE_H
+#define MAILVIEWER_OBJECTTREEEMPTYSOURCE_H
+
+#include <MimeTreeParser/ObjectTreeSource>
+
+class QString;
+
+class ObjectSourcePrivate;
+class ObjectTreeSource : public MimeTreeParser::Interface::ObjectTreeSource
+{
+public:
+    ObjectTreeSource(MimeTreeParser::HtmlWriter *writer);
+    virtual ~ObjectTreeSource();
+    void setHtmlLoadExternal(bool loadExternal);
+    bool decryptMessage() const Q_DECL_OVERRIDE;
+    bool htmlLoadExternal() const Q_DECL_OVERRIDE;
+    bool showSignatureDetails() const Q_DECL_OVERRIDE;
+    void setHtmlMode(MimeTreeParser::Util::HtmlMode mode, const QList<MimeTreeParser::Util::HtmlMode> &availableModes) Q_DECL_OVERRIDE;
+    MimeTreeParser::Util::HtmlMode preferredMode() const Q_DECL_OVERRIDE;
+    void setAllowDecryption(bool allowDecryption);
+    int levelQuote() const Q_DECL_OVERRIDE;
+    const QTextCodec *overrideCodec() Q_DECL_OVERRIDE;
+    QString createMessageHeader(KMime::Message *message) Q_DECL_OVERRIDE;
+    const MimeTreeParser::AttachmentStrategy *attachmentStrategy() Q_DECL_OVERRIDE;
+    MimeTreeParser::HtmlWriter *htmlWriter() Q_DECL_OVERRIDE;
+    QObject *sourceObject() Q_DECL_OVERRIDE;
+    bool autoImportKeys() const Q_DECL_OVERRIDE;
+    bool showEmoticons() const Q_DECL_OVERRIDE;
+    bool showExpandQuotesMark() const Q_DECL_OVERRIDE;
+    const MimeTreeParser::BodyPartFormatterBaseFactory *bodyPartFormatterFactory() Q_DECL_OVERRIDE;
+    MimeTreeParser::Interface::MessagePartRendererPtr messagePartTheme(MimeTreeParser::Interface::MessagePartPtr msgPart) Q_DECL_OVERRIDE;
+private:
+    ObjectSourcePrivate *const d;
+};
+
+#endif
+
diff --git a/framework/domain/mimetreeparser/stringhtmlwriter.cpp b/framework/domain/mimetreeparser/stringhtmlwriter.cpp
new file mode 100644
index 00000000..88034492
--- /dev/null
+++ b/framework/domain/mimetreeparser/stringhtmlwriter.cpp
@@ -0,0 +1,150 @@
+/*  -*- c++ -*-
+    filehtmlwriter.cpp
+
+    This file is part of KMail, the KDE mail client.
+    Copyright (c) 2003 Marc Mutz <mutz@kde.org>
+
+    KMail is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License, version 2, as
+    published by the Free Software Foundation.
+
+    KMail is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#include "stringhtmlwriter.h"
+
+#include <QDebug>
+#include <QTextStream>
+#include <QUrl>
+
+StringHtmlWriter::StringHtmlWriter()
+    : MimeTreeParser::HtmlWriter()
+    , mState(Ended)
+{
+}
+
+StringHtmlWriter::~StringHtmlWriter()
+{
+}
+
+void StringHtmlWriter::begin(const QString &css)
+{
+    if (mState != Ended) {
+        qWarning() << "begin() called on non-ended session!";
+        reset();
+    }
+
+    mState = Begun;
+    mExtraHead.clear();
+    mHtml.clear();
+
+    if (!css.isEmpty()) {
+        write(QLatin1String("<!-- CSS Definitions \n") + css + QLatin1String("-->\n"));
+    }
+}
+
+void StringHtmlWriter::end()
+{
+    if (mState != Begun) {
+        qWarning() << "Called on non-begun or queued session!";
+    }
+
+    if (!mExtraHead.isEmpty()) {
+        insertExtraHead();
+        mExtraHead.clear();
+    }
+    resolveCidUrls();
+    mState = Ended;
+}
+
+void StringHtmlWriter::reset()
+{
+    if (mState != Ended) {
+        mHtml.clear();
+        mExtraHead.clear();
+        mState = Begun; // don't run into end()'s warning
+        end();
+        mState = Ended;
+    }
+}
+
+void StringHtmlWriter::write(const QString &str)
+{
+    if (mState != Begun) {
+        qWarning() << "Called in Ended or Queued state!";
+    }
+    mHtml.append(str);
+}
+
+void StringHtmlWriter::queue(const QString &str)
+{
+    write(str);
+}
+
+void StringHtmlWriter::flush()
+{
+    mState = Begun; // don't run into end()'s warning
+    end();
+}
+
+void StringHtmlWriter::embedPart(const QByteArray &contentId, const QString &url)
+{
+    write("<!-- embedPart(contentID=" + contentId + ", url=" + url + ") -->\n");
+    mEmbeddedPartMap.insert(contentId, url);
+}
+
+void StringHtmlWriter::resolveCidUrls()
+{
+    for (const auto &cid : mEmbeddedPartMap.keys()) {
+        mHtml.replace(QString("src=\"cid:%1\"").arg(QString(cid)), QString("src=\"%1\"").arg(mEmbeddedPartMap.value(cid).toString()));
+    }
+}
+
+void StringHtmlWriter::extraHead(const QString &extraHead)
+{
+    if (mState != Ended) {
+        qWarning() << "Called on non-started session!";
+    }
+    mExtraHead.append(extraHead);
+}
+
+
+void StringHtmlWriter::insertExtraHead()
+{
+    const QString headTag(QStringLiteral("<head>"));
+    const int index = mHtml.indexOf(headTag);
+    if (index != -1) {
+        mHtml.insert(index + headTag.length(), mExtraHead);
+    }
+}
+
+QMap<QByteArray, QUrl> StringHtmlWriter::embeddedParts() const
+{
+    return mEmbeddedPartMap;
+}
+
+QString StringHtmlWriter::html() const
+{
+    if (mState != Ended) {
+        qWarning() << "Called on non-ended session!";
+    }
+    return mHtml;
+}
diff --git a/framework/domain/mimetreeparser/stringhtmlwriter.h b/framework/domain/mimetreeparser/stringhtmlwriter.h
new file mode 100644
index 00000000..fa5b760e
--- /dev/null
+++ b/framework/domain/mimetreeparser/stringhtmlwriter.h
@@ -0,0 +1,71 @@
+/*  -*- c++ -*-
+
+    Copyright (c) 2016 Sandro Knauß <sknauss@kde.org>
+
+    Kube is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License, version 2, as
+    published by the Free Software Foundation.
+
+    Kube is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#ifndef __KUBE_FRAMEWORK_MAIL_STRINGHTMLWRITER_H__
+#define __KUBE_FRAMEWORK_MAIL_STRINGHTMLWRITER_H__
+
+#include <MimeTreeParser/HtmlWriter>
+
+#include <QFile>
+#include <QTextStream>
+
+class QString;
+
+class StringHtmlWriter : public MimeTreeParser::HtmlWriter
+{
+public:
+    explicit StringHtmlWriter();
+    virtual ~StringHtmlWriter();
+
+    void begin(const QString &cssDefs) Q_DECL_OVERRIDE;
+    void end() Q_DECL_OVERRIDE;
+    void reset() Q_DECL_OVERRIDE;
+    void write(const QString &str) Q_DECL_OVERRIDE;
+    void queue(const QString &str) Q_DECL_OVERRIDE;
+    void flush() Q_DECL_OVERRIDE;
+    void embedPart(const QByteArray &contentId, const QString &url) Q_DECL_OVERRIDE;
+    void extraHead(const QString &str) Q_DECL_OVERRIDE;
+
+    QString html() const;
+    QMap<QByteArray, QUrl> embeddedParts() const;
+private:
+    void insertExtraHead();
+    void resolveCidUrls();
+
+    QString mHtml;
+    QString mExtraHead;
+    enum State {
+        Begun,
+        Queued,
+        Ended
+    } mState;
+    QMap<QByteArray, QUrl> mEmbeddedPartMap;
+};
+
+#endif // __MESSAGEVIEWER_FILEHTMLWRITER_H__
diff --git a/framework/domain/mimetreeparser/tests/CMakeLists.txt b/framework/domain/mimetreeparser/tests/CMakeLists.txt
new file mode 100644
index 00000000..7945c5a0
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/CMakeLists.txt
@@ -0,0 +1,12 @@
+add_subdirectory(gnupg_home)
+add_definitions( -DMAIL_DATA_DIR="${CMAKE_CURRENT_SOURCE_DIR}/data" )
+include(${CMAKE_CURRENT_SOURCE_DIR}/kdepim_add_gpg_crypto_test.cmake)
+include_directories(
+    ${CMAKE_CURRENT_BINARY_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/..
+    )
+
+add_executable(mimetreeparsertest interfacetest.cpp)
+add_gpg_crypto_test(mimetreeparsertest mimetreeparsertest)
+qt5_use_modules(mimetreeparsertest Core Test)
+target_link_libraries(mimetreeparsertest mimetreeparser)
diff --git a/framework/domain/mimetreeparser/tests/data/alternative.mbox b/framework/domain/mimetreeparser/tests/data/alternative.mbox
new file mode 100644
index 00000000..6522c34b
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/alternative.mbox
@@ -0,0 +1,28 @@
+Return-Path: <konqi@example.org>
+Date: Wed, 8 Jun 2016 20:34:44 -0700
+From: Konqi <konqi@example.org>
+To: konqi@kde.org
+Subject: A random subject with alternative contenttype
+MIME-Version: 1.0
+Content-Type: multipart/alternative; 
+ boundary="----=_Part_12345678_12345678"
+
+
+------=_Part_12345678_12345678
+Content-Type: text/plain; charset=utf-8
+Content-Transfer-Encoding: quoted-printable
+
+If you can see this text it means that your email client couldn't display o=
+ur newsletter properly.
+Please visit this link to view the newsletter on our website: http://www.go=
+g.com/newsletter/
+
+
+------=_Part_12345678_12345678
+Content-Transfer-Encoding: 7Bit
+Content-Type: text/html; charset="windows-1252"
+
+<html><body><p><span>HTML</span> text</p></body></html>
+
+
+------=_Part_12345678_12345678--
diff --git a/framework/domain/mimetreeparser/tests/data/html.mbox b/framework/domain/mimetreeparser/tests/data/html.mbox
new file mode 100644
index 00000000..bf5c685d
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/html.mbox
@@ -0,0 +1,15 @@
+From foo@example.com Thu, 26 May 2011 01:16:54 +0100
+From: Thomas McGuire <foo@example.com>
+Subject: HTML test
+Date: Thu, 26 May 2011 01:16:54 +0100
+Message-ID: <1501334.pROlBb7MZF@herrwackelpudding.localhost>
+X-KMail-Transport: GMX
+X-KMail-Fcc: 28
+X-KMail-Drafts: 7
+X-KMail-Templates: 9
+User-Agent: KMail/4.6 beta5 (Linux/2.6.34.7-0.7-desktop; KDE/4.6.41; x86_64; git-0269848; 2011-04-19)
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7Bit
+Content-Type: text/html; charset="windows-1252"
+
+<html><body><p><span>HTML</span> text</p></body></html>
\ No newline at end of file
diff --git a/framework/domain/mimetreeparser/tests/data/openpgp-encrypted-attachment-and-non-encrypted-attachment.mbox b/framework/domain/mimetreeparser/tests/data/openpgp-encrypted-attachment-and-non-encrypted-attachment.mbox
new file mode 100644
index 00000000..2d9726ea
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/openpgp-encrypted-attachment-and-non-encrypted-attachment.mbox
@@ -0,0 +1,115 @@
+From test@kolab.org Fri May 01 15:12:47 2015
+From: testkey <test@kolab.org>
+To: you@you.com
+Subject: enc & non enc attachment
+Date: Fri, 01 May 2015 17:12:47 +0200
+Message-ID: <13897561.XENKdJMSlR@tabin.local>
+X-KMail-Identity: 1197256126
+User-Agent: KMail/4.13.0.1 (Linux/3.19.1-towo.1-siduction-amd64; KDE/4.14.2; x86_64; git-cd33034; 2015-04-11)
+MIME-Version: 1.0
+Content-Type: multipart/mixed; boundary="nextPart1939768.sIoLGH0PD8"
+Content-Transfer-Encoding: 7Bit
+
+This is a multi-part message in MIME format.
+
+--nextPart1939768.sIoLGH0PD8
+Content-Type: multipart/encrypted; boundary="nextPart2814166.CHKktCGlQ3"; protocol="application/pgp-encrypted"
+
+
+--nextPart2814166.CHKktCGlQ3
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+Content-Disposition: attachment
+Content-Transfer-Encoding: 7Bit
+
+Version: 1
+--nextPart2814166.CHKktCGlQ3
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+fwtg6Vd/dEvn8Qssnzg/0Ns56jRcO6Nw4d1Af+/RH0/cdv+O/fRK7KnmBXPWGsQeDPhK9oWC6hdd
+R3pdUcg88Tx7U7Ej1y1qMjreGwjt/cnaF2YtvCXQe7bzxLkj+/sunT0Ry00OwHRI8DERLqeNmqGV
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+9mTNusPvXJLrbnjUe/b16FDfsZ/3xC8d4/HoCQ4Anwzg91vWPL7+3pvvDM806sTY4IVyMxfrojO3
+BVubbyJMhnVVM3y+l187/nChIJ2ZpSs9hMD4qC6t6x6+0gkAoRC33/Sb8RdmXj9nzvWraivhP47g
+AyHxKb1mfWkRYHCjMb30nafeeWzerU9963w3L3/02c4f7D0y0NXTx3f3D/JTb7bzxpeODu55+PGT
+yy5F+ZmeD/iSrh5efeJd/hGZP5GBux+6cysY3w7H+16IVy65V6trnn3P9JqVjQ3JuSsdHhWW6hIL
+NuhyUpJgEF/ofSVBeLBuVtVjd3y55SHXhQ8UBht0DR4r98Fs+IRg/zrxlz2/2A7p5yYBY93Gu+4f
+H5xojLwOxfjd/WufOHhQ/IcD7eYVC5YyCjFMfkVV4NpMFvpTachoZeDaNryLnliOczsUCv1XBWD8
+YjF5MWJ9kcT757qenR7vf4bDoqWwHCvUUfPNsQQMWSZAZTlsw7nxYQQTcuDrjgQuPn7z/D7YivNt
+nPPfEDzwqcU75/j6SD/f8uG5vXs5dL7Hjb+d4gp8mnF8nAOabjcac+OBAxyuNiT4HyNwGZYgu0RW
+IDt/Icz4zAC0tXE4183rQ6XwU9uBXgLQ5Teg7GIv1+EqgsF/GY4DtCQALZMp2ITttmqoHzpWr756
+o/0d59+Lh3Y1HHcAAAAASUVORK5CYII=
+
+--nextPart1939768.sIoLGH0PD8--
+
diff --git a/framework/domain/mimetreeparser/tests/data/openpgp-inline-charset-encrypted.mbox b/framework/domain/mimetreeparser/tests/data/openpgp-inline-charset-encrypted.mbox
new file mode 100644
index 00000000..8bd06910
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/openpgp-inline-charset-encrypted.mbox
@@ -0,0 +1,40 @@
+From test@example.com Thu, 17 Oct 2013 02:13:03 +0200
+Return-Path: <test@example.com>
+Delivered-To: you@you.com
+Received: from localhost (localhost [127.0.0.1])
+        by test@example.com (Postfix) with ESMTP id B30D8120030
+        for <you@you.com>; Thu, 17 Oct 2013 02:13:05 +0200 (CEST)
+From: test <test@example.com>
+To: you@you.com
+Subject: charset
+Date: Thu, 17 Oct 2013 02:13:03 +0200
+Message-ID: <4081645.yGjUJ4o4Se@example.local>
+User-Agent: KMail/4.12 pre (Linux/3.11-4.towo-siduction-amd64; KDE/4.11.2; x86_64; git-f7f14e3; 2013-10-15)
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7Bit
+Content-Type: text/plain; charset="ISO-8859-15"
+
+-----BEGIN PGP MESSAGE-----
+Version: GnuPG v2.0.22 (GNU/Linux)
+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+=bPqu
+-----END PGP MESSAGE-----
+
+
diff --git a/framework/domain/mimetreeparser/tests/data/plaintext.mbox b/framework/domain/mimetreeparser/tests/data/plaintext.mbox
new file mode 100644
index 00000000..d185b1c1
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/plaintext.mbox
@@ -0,0 +1,13 @@
+Return-Path: <konqi@example.org>
+Date: Wed, 8 Jun 2016 20:34:44 -0700
+From: Konqi <konqi@example.org>
+To: konqi@kde.org
+Subject: A random subject with alternative contenttype
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8
+Content-Transfer-Encoding: quoted-printable
+
+If you can see this text it means that your email client couldn't display o=
+ur newsletter properly.
+Please visit this link to view the newsletter on our website: http://www.go=
+g.com/newsletter/
diff --git a/framework/domain/mimetreeparser/tests/data/smime-encrypted.mbox b/framework/domain/mimetreeparser/tests/data/smime-encrypted.mbox
new file mode 100644
index 00000000..6b6d6a0d
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/data/smime-encrypted.mbox
@@ -0,0 +1,22 @@
+From test@example.com Sat, 13 Apr 2013 01:54:30 +0200
+From: test <test@example.com>
+To: you@you.com
+Subject: test
+Date: Sat, 13 Apr 2013 01:54:30 +0200
+Message-ID: <1576646.QQxzHWx8dA@tabin>
+X-KMail-Identity: 505942601
+User-Agent: KMail/4.10.2 (Linux/3.9.0-rc4-experimental-amd64; KDE/4.10.60; x86_64; git-fc9b82c; 2013-04-11)
+MIME-Version: 1.0
+Content-Type: application/pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
+Content-Transfer-Encoding: base64
+Content-Disposition: attachment; filename="smime.p7m"
+
+MIAGCSqGSIb3DQEHA6CAMIACAQAxgfwwgfkCAQAwYjBVMQswCQYDVQQGEwJVUzENMAsGA1UECgwE
+S0RBQjEWMBQGA1UEAwwNdW5pdHRlc3QgY2VydDEfMB0GCSqGSIb3DQEJARYQdGVzdEBleGFtcGxl
+LmNvbQIJANNFIDoYY4XJMA0GCSqGSIb3DQEBAQUABIGAJwmmaOeidXUHSQGOf2OBIsPYafVqdORe
+y54pEXbXiAfSVUWgI4a9CsiWwcDX8vlaX9ZLLr+L2VmOfr6Yc5214yxzausZVvnUFjy6LUXotuEX
+tSar4EW7XI9DjaZc1l985naMsTx9JUa5GyQ9J6PGqhosAKpKMGgKkFAHaOwE1/IwgAYJKoZIhvcN
+AQcBMBQGCCqGSIb3DQMHBAieDfmz3WGbN6CABHgEpsLrNn0PAZTDUfNomDypvSCl5bQH+9cKm80m
+upMV2r8RBiXS7OaP4SpCxq18afDTTPatvboHIoEX92taTbq8soiAgEs6raSGtEYZNvFL0IYqm7MA
+o5HCOmjiEcInyPf14lL3HnPk10FaP3hh58qTHUh4LPYtL7UECOZELYnUfUVhAAAAAAAAAAAAAA==
+
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/CMakeLists.txt b/framework/domain/mimetreeparser/tests/gnupg_home/CMakeLists.txt
new file mode 100644
index 00000000..9c64a008
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/CMakeLists.txt
@@ -0,0 +1,10 @@
+configure_file( gpg-agent.conf.in
+  "${CMAKE_CURRENT_BINARY_DIR}/gpg-agent.conf" @ONLY )
+
+configure_file( gpgsm.conf.in
+  "${CMAKE_CURRENT_BINARY_DIR}/gpgsm.conf" @ONLY )
+
+file( COPY
+  ${CMAKE_CURRENT_SOURCE_DIR}
+  DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/../"
+)
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/DIR.txt b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/DIR.txt
new file mode 100644
index 00000000..1a45a6b3
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/DIR.txt
@@ -0,0 +1,3 @@
+v:1:
+c:4E31CEB57DDD4A7B9991AB05507B1ED4293FF952:CN=Test-ZS 7,O=Intevation GmbH,C=DE:ldap%3A//ca.intevation.org/cn=Test-ZS 7, o=Intevation GmbH, c=DE?certificateRevocationList:20100615T181523:20100707T181523:72FEF3FD88455A1D4C6796A6499D4422::::
+c:7F2A402CBB016A9146D613568C89D3596A4111AA:CN=Wurzel ZS 3,O=Intevation GmbH,C=DE:ldap%3A//ca.intevation.org/cn=Wurzel ZS 3, o=Intevation GmbH, c=DE?certificateRevocationList:20100625T102134:20100814T102134:44E60EEC02EF2FBF7A5C77E9BD565667::::
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-4E31CEB57DDD4A7B9991AB05507B1ED4293FF952.db b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-4E31CEB57DDD4A7B9991AB05507B1ED4293FF952.db
new file mode 100644
index 00000000..0b7e2dd4
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-4E31CEB57DDD4A7B9991AB05507B1ED4293FF952.db
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-7F2A402CBB016A9146D613568C89D3596A4111AA.db b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-7F2A402CBB016A9146D613568C89D3596A4111AA.db
new file mode 100644
index 00000000..47474a26
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr-cache.d/crl-7F2A402CBB016A9146D613568C89D3596A4111AA.db
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr.conf b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr.conf
new file mode 100644
index 00000000..a17a0354
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/dirmngr.conf
@@ -0,0 +1,8 @@
+
+###+++--- GPGConf ---+++###
+debug-level basic
+log-file socket:///home/leo/kde/src/kdepim/messagecomposer/tests/gnupg_home/log-socket
+###+++--- GPGConf ---+++### Tue 29 Jun 2010 10:23:13 AM EDT
+# GPGConf edited this configuration file.
+# It will disable options before this marked block, but it will
+# never change anything below these lines.
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/gpg-agent.conf.in b/framework/domain/mimetreeparser/tests/gnupg_home/gpg-agent.conf.in
new file mode 100644
index 00000000..ece69255
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/gpg-agent.conf.in
@@ -0,0 +1,10 @@
+pinentry-program @CMAKE_CURRENT_BINARY_DIR@/pinentry-fake.sh
+###+++--- GPGConf ---+++###
+allow-mark-trusted
+debug-level basic
+faked-system-time 20130110T154812
+log-file @CMAKE_CURRENT_BINARY_DIR@/gpg-agent.log
+###+++--- GPGConf ---+++### Tue 29 Jun 2010 10:23:13 AM EDT
+# GPGConf edited this configuration file.
+# It will disable options before this marked block, but it will
+# never change anything below these lines.
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/gpg.conf b/framework/domain/mimetreeparser/tests/gnupg_home/gpg.conf
new file mode 100644
index 00000000..f1760823
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/gpg.conf
@@ -0,0 +1,244 @@
+# Options for GnuPG
+# Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+# 
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+# 
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#
+# Unless you specify which option file to use (with the command line
+# option "--options filename"), GnuPG uses the file ~/.gnupg/gpg.conf
+# by default.
+#
+# An options file can contain any long options which are available in
+# GnuPG. If the first non white space character of a line is a '#',
+# this line is ignored.  Empty lines are also ignored.
+#
+# See the man page for a list of options.
+
+# Uncomment the following option to get rid of the copyright notice
+
+#no-greeting
+
+# If you have more than 1 secret key in your keyring, you may want to
+# uncomment the following option and set your preferred keyid.
+
+#default-key 621CC013
+
+# If you do not pass a recipient to gpg, it will ask for one.  Using
+# this option you can encrypt to a default key.  Key validation will
+# not be done in this case.  The second form uses the default key as
+# default recipient.
+
+#default-recipient some-user-id
+#default-recipient-self
+
+# Use --encrypt-to to add the specified key as a recipient to all
+# messages.  This is useful, for example, when sending mail through a
+# mail client that does not automatically encrypt mail to your key.
+# In the example, this option allows you to read your local copy of
+# encrypted mail that you've sent to others.
+
+#encrypt-to some-key-id
+
+# By default GnuPG creates version 3 signatures for data files.  This
+# is not strictly OpenPGP compliant but PGP 6 and most versions of PGP
+# 7 require them.  To disable this behavior, you may use this option
+# or --openpgp.
+
+#no-force-v3-sigs
+
+# Because some mailers change lines starting with "From " to ">From "
+# it is good to handle such lines in a special way when creating
+# cleartext signatures; all other PGP versions do it this way too.
+
+#no-escape-from-lines
+
+# If you do not use the Latin-1 (ISO-8859-1) charset, you should tell
+# GnuPG which is the native character set.  Please check the man page
+# for supported character sets.  This character set is only used for
+# metadata and not for the actual message which does not undergo any
+# translation.  Note that future version of GnuPG will change to UTF-8
+# as default character set.  In most cases this option is not required
+# as GnuPG is able to figure out the correct charset at runtime.
+
+#charset utf-8
+
+# Group names may be defined like this:
+#   group mynames = paige 0x12345678 joe patti
+#
+# Any time "mynames" is a recipient (-r or --recipient), it will be
+# expanded to the names "paige", "joe", and "patti", and the key ID
+# "0x12345678".  Note there is only one level of expansion - you
+# cannot make an group that points to another group.  Note also that
+# if there are spaces in the recipient name, this will appear as two
+# recipients.  In these cases it is better to use the key ID.
+
+#group mynames = paige 0x12345678 joe patti
+
+# Lock the file only once for the lifetime of a process.  If you do
+# not define this, the lock will be obtained and released every time
+# it is needed, which is usually preferable.
+
+#lock-once
+
+# GnuPG can send and receive keys to and from a keyserver.  These
+# servers can be HKP, email, or LDAP (if GnuPG is built with LDAP
+# support).
+#
+# Example HKP keyserver:
+#      hkp://keys.gnupg.net
+#      hkp://subkeys.pgp.net
+#
+# Example email keyserver:
+#      mailto:pgp-public-keys@keys.pgp.net
+#
+# Example LDAP keyservers:
+#      ldap://keyserver.pgp.com
+#
+# Regular URL syntax applies, and you can set an alternate port
+# through the usual method:
+#      hkp://keyserver.example.net:22742
+#
+# Most users just set the name and type of their preferred keyserver.
+# Note that most servers (with the notable exception of
+# ldap://keyserver.pgp.com) synchronize changes with each other.  Note
+# also that a single server name may actually point to multiple
+# servers via DNS round-robin.  hkp://keys.gnupg.net is an example of
+# such a "server", which spreads the load over a number of physical
+# servers.  To see the IP address of the server actually used, you may use
+# the "--keyserver-options debug".
+
+keyserver hkp://keys.gnupg.net
+#keyserver mailto:pgp-public-keys@keys.nl.pgp.net
+#keyserver ldap://keyserver.pgp.com
+
+# Common options for keyserver functions:
+#
+# include-disabled : when searching, include keys marked as "disabled"
+#                    on the keyserver (not all keyservers support this).
+#
+# no-include-revoked : when searching, do not include keys marked as
+#                      "revoked" on the keyserver.
+#
+# verbose : show more information as the keys are fetched.
+#           Can be used more than once to increase the amount
+#           of information shown.
+#
+# use-temp-files : use temporary files instead of a pipe to talk to the
+#                  keyserver.  Some platforms (Win32 for one) always
+#                  have this on.
+#
+# keep-temp-files : do not delete temporary files after using them
+#                   (really only useful for debugging)
+#
+# http-proxy="proxy" : set the proxy to use for HTTP and HKP keyservers.
+#                      This overrides the "http_proxy" environment variable,
+#                      if any.
+#
+# auto-key-retrieve : automatically fetch keys as needed from the keyserver
+#                     when verifying signatures or when importing keys that
+#                     have been revoked by a revocation key that is not
+#                     present on the keyring.
+#
+# no-include-attributes : do not include attribute IDs (aka "photo IDs")
+#                         when sending keys to the keyserver.
+
+#keyserver-options auto-key-retrieve
+
+# Display photo user IDs in key listings
+
+# list-options show-photos
+
+# Display photo user IDs when a signature from a key with a photo is
+# verified
+
+# verify-options show-photos
+
+# Use this program to display photo user IDs
+#
+# %i is expanded to a temporary file that contains the photo.
+# %I is the same as %i, but the file isn't deleted afterwards by GnuPG.
+# %k is expanded to the key ID of the key.
+# %K is expanded to the long OpenPGP key ID of the key.
+# %t is expanded to the extension of the image (e.g. "jpg").
+# %T is expanded to the MIME type of the image (e.g. "image/jpeg").
+# %f is expanded to the fingerprint of the key.
+# %% is %, of course.
+#
+# If %i or %I are not present, then the photo is supplied to the
+# viewer on standard input.  If your platform supports it, standard
+# input is the best way to do this as it avoids the time and effort in
+# generating and then cleaning up a secure temp file.
+#
+# If no photo-viewer is provided, GnuPG will look for xloadimage, eog,
+# or display (ImageMagick).  On Mac OS X and Windows, the default is
+# to use your regular JPEG image viewer.
+#
+# Some other viewers:
+# photo-viewer "qiv %i"
+# photo-viewer "ee %i"
+#
+# This one saves a copy of the photo ID in your home directory:
+# photo-viewer "cat > ~/photoid-for-key-%k.%t"
+#
+# Use your MIME handler to view photos:
+# photo-viewer "metamail -q -d -b -c %T -s 'KeyID 0x%k' -f GnuPG"
+
+# Passphrase agent
+#
+# We support the old experimental passphrase agent protocol as well as
+# the new Assuan based one (currently available in the "newpg" package
+# at ftp.gnupg.org/gcrypt/alpha/aegypten/).  To make use of the agent,
+# you have to run an agent as daemon and use the option
+#
+# use-agent
+# 
+# which tries to use the agent but will fallback to the regular mode
+# if there is a problem connecting to the agent.  The normal way to
+# locate the agent is by looking at the environment variable
+# GPG_AGENT_INFO which should have been set during gpg-agent startup.
+# In certain situations the use of this variable is not possible, thus
+# the option
+# 
+# --gpg-agent-info=<path>:<pid>:1
+#
+# may be used to override it.
+
+# Automatic key location
+#
+# GnuPG can automatically locate and retrieve keys as needed using the
+# auto-key-locate option.  This happens when encrypting to an email
+# address (in the "user@example.com" form), and there are no
+# user@example.com keys on the local keyring.  This option takes the
+# following arguments, in the order they are to be tried:
+# 
+# cert = locate a key using DNS CERT, as specified in RFC-4398.
+#        GnuPG can handle both the PGP (key) and IPGP (URL + fingerprint)
+#        CERT methods.
+#
+# pka = locate a key using DNS PKA.
+#
+# ldap = locate a key using the PGP Universal method of checking
+#        "ldap://keys.(thedomain)".  For example, encrypting to
+#        user@example.com will check ldap://keys.example.com.
+#
+# keyserver = locate a key using whatever keyserver is defined using
+#             the keyserver option.
+#
+# You may also list arbitrary keyservers here by URL.
+#
+# Try CERT, then PKA, then LDAP, then hkp://subkeys.net:
+#auto-key-locate cert pka ldap hkp://subkeys.pgp.net
+
+###+++--- GPGConf ---+++###
+utf8-strings
+#debug-level basic
+#log-file socket:///home/leo/kde/src/kdepim/messagecomposer/tests/gnupg_home/log-socket
+###+++--- GPGConf ---+++### Tue 29 Jun 2010 10:23:13 AM EDT
+# GPGConf edited this configuration file.
+# It will disable options before this marked block, but it will
+# never change anything below these lines.
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/gpgsm.conf.in b/framework/domain/mimetreeparser/tests/gnupg_home/gpgsm.conf.in
new file mode 100644
index 00000000..92b6119d
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/gpgsm.conf.in
@@ -0,0 +1,10 @@
+
+###+++--- GPGConf ---+++###
+disable-crl-checks
+debug-level basic
+faked-system-time 20130110T154812
+log-file @CMAKE_CURRENT_BINARY_DIR@/gpgsm.log
+###+++--- GPGConf ---+++### Tue 29 Jun 2010 10:23:13 AM EDT
+# GPGConf edited this configuration file.
+# It will disable options before this marked block, but it will
+# never change anything below these lines.
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/pinentry-fake.sh b/framework/domain/mimetreeparser/tests/gnupg_home/pinentry-fake.sh
new file mode 100755
index 00000000..7135a942
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/pinentry-fake.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+echo "OK Your orders please"
+while :
+do
+        read cmd
+        echo "OK"
+        [ "$cmd" = "BYE" ] && break
+done
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/private-keys-v1.d/1AA8BA52430E51AE249AF0DA97D59F869E4101A8.key b/framework/domain/mimetreeparser/tests/gnupg_home/private-keys-v1.d/1AA8BA52430E51AE249AF0DA97D59F869E4101A8.key
new file mode 100644
index 00000000..39ac307b
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/private-keys-v1.d/1AA8BA52430E51AE249AF0DA97D59F869E4101A8.key
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/pubring.gpg b/framework/domain/mimetreeparser/tests/gnupg_home/pubring.gpg
new file mode 100644
index 00000000..2e00fa24
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/pubring.gpg
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/pubring.kbx b/framework/domain/mimetreeparser/tests/gnupg_home/pubring.kbx
new file mode 100644
index 00000000..0230f313
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/pubring.kbx
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/scdaemon.conf b/framework/domain/mimetreeparser/tests/gnupg_home/scdaemon.conf
new file mode 100644
index 00000000..a17a0354
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/scdaemon.conf
@@ -0,0 +1,8 @@
+
+###+++--- GPGConf ---+++###
+debug-level basic
+log-file socket:///home/leo/kde/src/kdepim/messagecomposer/tests/gnupg_home/log-socket
+###+++--- GPGConf ---+++### Tue 29 Jun 2010 10:23:13 AM EDT
+# GPGConf edited this configuration file.
+# It will disable options before this marked block, but it will
+# never change anything below these lines.
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/secring.gpg b/framework/domain/mimetreeparser/tests/gnupg_home/secring.gpg
new file mode 100644
index 00000000..cfd3387d
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/secring.gpg
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/trustdb.gpg b/framework/domain/mimetreeparser/tests/gnupg_home/trustdb.gpg
new file mode 100644
index 00000000..70089c15
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/trustdb.gpg
diff --git a/framework/domain/mimetreeparser/tests/gnupg_home/trustlist.txt b/framework/domain/mimetreeparser/tests/gnupg_home/trustlist.txt
new file mode 100644
index 00000000..bbb0442d
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/gnupg_home/trustlist.txt
@@ -0,0 +1,11 @@
+5E:7C:B2:F4:9F:70:05:43:42:32:5D:75:74:70:00:09:B9:D8:08:61 S
+
+
+
+# CN=unittest cert
+# O=KDAB
+# C=US
+# EMail=test@example.com
+24:D2:FC:A2:2E:B3:B8:0A:1E:37:71:D1:4C:C6:58:E3:21:2B:49:DC S
+
+
diff --git a/framework/domain/mimetreeparser/tests/interfacetest.cpp b/framework/domain/mimetreeparser/tests/interfacetest.cpp
new file mode 100644
index 00000000..ac77b025
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/interfacetest.cpp
@@ -0,0 +1,204 @@
+/*
+    Copyright (c) 2016 Sandro Knauß <knauss@kolabsystems.com>
+
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    This library is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+    License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to the
+    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301, USA.
+*/
+
+#include "interface.h"
+#include "interface_p.h"
+
+#include <QTest>
+
+QByteArray readMailFromFile(const QString &mailFile)
+{
+    QFile file(QLatin1String(MAIL_DATA_DIR) + QLatin1Char('/') + mailFile);
+    file.open(QIODevice::ReadOnly);
+    Q_ASSERT(file.isOpen());
+    return file.readAll();
+}
+
+QByteArray join(QVector<QByteArray> vec, QByteArray sep)
+{
+    QByteArray ret;
+    bool bInit = true;
+    foreach(const auto &entry, vec) {
+        if (!bInit) {
+            ret += sep;
+        }
+        bInit = false;
+        ret += entry;
+    }
+    return ret;
+}
+
+class InterfaceTest : public QObject
+{
+    Q_OBJECT
+private:
+    void printTree(const Part::Ptr &start, QString pre)
+    {
+        foreach (const auto &part, start->subParts()) {
+            qWarning() << QStringLiteral("%1* %2(%3)")
+                            .arg(pre)
+                            .arg(QString::fromLatin1(part->type()))
+                            .arg(QString::fromLatin1(join(part->availableContents(),", ")));
+            printTree(part,pre + QStringLiteral("  "));
+        }
+    }
+
+private slots:
+
+    void testTextMail()
+    {
+        Parser parser(readMailFromFile("plaintext.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(), QVector<QByteArray>() << "plaintext");
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("If you can see this text it means that your email client couldn't display our newsletter properly.\nPlease visit this link to view the newsletter on our website: http://www.gog.com/newsletter/").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 0);
+        QCOMPARE(contentList[0]->signatures().size(), 0);
+
+        contentList = contentPart->content("html");
+        QCOMPARE(contentList.size(), 0);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 0);
+    }
+
+    void testTextAlternative()
+    {
+        Parser parser(readMailFromFile("alternative.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(), QVector<QByteArray>() << "html" << "plaintext");
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("If you can see this text it means that your email client couldn't display our newsletter properly.\nPlease visit this link to view the newsletter on our website: http://www.gog.com/newsletter/\n").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 0);
+        QCOMPARE(contentList[0]->signatures().size(), 0);
+
+        contentList = contentPart->content("html");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("<html><body><p><span>HTML</span> text</p></body></html>\n\n").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 0);
+        QCOMPARE(contentList[0]->signatures().size(), 0);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 0);
+    }
+
+     void testTextHtml()
+    {
+        Parser parser(readMailFromFile("html.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(),  QVector<QByteArray>() << "html");
+
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 0);
+
+        contentList = contentPart->content("html");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("<html><body><p><span>HTML</span> text</p></body></html>").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 0);
+        QCOMPARE(contentList[0]->signatures().size(), 0);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 0);
+    }
+
+    void testSMimeEncrypted()
+    {
+        Parser parser(readMailFromFile("smime-encrypted.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(),  QVector<QByteArray>() << "plaintext");
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("The quick brown fox jumped over the lazy dog.").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 1);
+        QCOMPARE(contentList[0]->signatures().size(), 0);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 0);
+    }
+
+    void testOpenPGPEncryptedAttachment()
+    {
+        Parser parser(readMailFromFile("openpgp-encrypted-attachment-and-non-encrypted-attachment.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(),  QVector<QByteArray>() << "plaintext");
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("test text").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 1);
+        QCOMPARE(contentList[0]->signatures().size(), 1);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 2);
+        QCOMPARE(contentAttachmentList[0]->availableContents(), QVector<QByteArray>() << "text/plain");
+        QCOMPARE(contentAttachmentList[0]->content().size(), 1);
+        QCOMPARE(contentAttachmentList[0]->encryptions().size(), 1);
+        QCOMPARE(contentAttachmentList[0]->signatures().size(), 1);
+        QCOMPARE(contentAttachmentList[1]->availableContents(), QVector<QByteArray>() << "image/png");
+        QCOMPARE(contentAttachmentList[1]->content().size(), 1);
+        QCOMPARE(contentAttachmentList[1]->encryptions().size(), 0);
+        QCOMPARE(contentAttachmentList[1]->signatures().size(), 0);
+    }
+
+    void testOpenPPGInline()
+    {
+        Parser parser(readMailFromFile("openpgp-inline-charset-encrypted.mbox"));
+        printTree(parser.d->mTree,QString());
+        auto contentPartList = parser.collectContentParts();
+        QCOMPARE(contentPartList.size(), 1);
+        auto contentPart = contentPartList[0];
+        QVERIFY((bool)contentPart);
+        QCOMPARE(contentPart->availableContents(),  QVector<QByteArray>() << "plaintext");
+        QCOMPARE(contentPart->encryptions().size(), 0);
+        QCOMPARE(contentPart->signatures().size(), 0);
+        auto contentList = contentPart->content("plaintext");
+        QCOMPARE(contentList.size(), 1);
+        QCOMPARE(contentList[0]->content(), QStringLiteral("asdasd asd asd asdf sadf sdaf sadf äöü").toLocal8Bit());
+        QCOMPARE(contentList[0]->charset(), QStringLiteral("utf-8").toLocal8Bit());
+        QCOMPARE(contentList[0]->encryptions().size(), 1);
+        QCOMPARE(contentList[0]->signatures().size(), 1);
+        auto contentAttachmentList = parser.collectAttachmentParts();
+        QCOMPARE(contentAttachmentList.size(), 0);
+    }
+};
+
+QTEST_GUILESS_MAIN(InterfaceTest)
+#include "interfacetest.moc"
\ No newline at end of file
diff --git a/framework/domain/mimetreeparser/tests/kdepim_add_gpg_crypto_test.cmake b/framework/domain/mimetreeparser/tests/kdepim_add_gpg_crypto_test.cmake
new file mode 100644
index 00000000..17078202
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/kdepim_add_gpg_crypto_test.cmake
@@ -0,0 +1,60 @@
+# Copyright (c) 2013 Sandro Knauß <mail@sandroknauss.de>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+set( GNUPGHOME ${CMAKE_BINARY_DIR}/framework/domain/mimetreeparser/tests/gnupg_home )
+add_definitions( -DGNUPGHOME="\\"${GNUPGHOME}\\"" )
+
+macro (ADD_GPG_CRYPTO_TEST _target _testname)
+   if (UNIX)
+      if (APPLE)
+         set(_library_path_variable "DYLD_LIBRARY_PATH")
+      elseif (CYGWIN)
+         set(_library_path_variable "PATH")
+      else (APPLE)
+         set(_library_path_variable "LD_LIBRARY_PATH")
+      endif (APPLE)
+
+      if (APPLE)
+         # DYLD_LIBRARY_PATH does not work like LD_LIBRARY_PATH
+         # OSX already has the RPATH in libraries and executables, putting runtime directories in
+         # DYLD_LIBRARY_PATH actually breaks things
+         set(_ld_library_path "${LIBRARY_OUTPUT_PATH}/${CMAKE_CFG_INTDIR}/")
+      else (APPLE)
+         set(_ld_library_path "${LIBRARY_OUTPUT_PATH}/${CMAKE_CFG_INTDIR}/:${LIB_INSTALL_DIR}:${QT_LIBRARY_DIR}")
+      endif (APPLE)
+      set(_executable "$<TARGET_FILE:${_target}>")
+
+      # use add_custom_target() to have the sh-wrapper generated during build time instead of cmake time
+      add_custom_command(TARGET ${_target} POST_BUILD
+        COMMAND ${CMAKE_COMMAND}
+        -D_filename=${_executable}.shell -D_library_path_variable=${_library_path_variable}
+        -D_ld_library_path="${_ld_library_path}" -D_executable=$<TARGET_FILE:${_target}>
+        -D_gnupghome="${GNUPGHOME}"
+        -P ${CMAKE_SOURCE_DIR}/framework/domain/mimetreeparser/tests/kdepim_generate_crypto_test_wrapper.cmake
+      )
+
+      set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "${_executable}.shell" )
+      add_test(NAME ${_testname} COMMAND ${_executable}.shell)
+
+   else (UNIX)
+      # under windows, set the property WRAPPER_SCRIPT just to the name of the executable
+      # maybe later this will change to a generated batch file (for setting the PATH so that the Qt libs are found)
+      set(_ld_library_path "${LIBRARY_OUTPUT_PATH}/${CMAKE_CFG_INTDIR}\;${LIB_INSTALL_DIR}\;${QT_LIBRARY_DIR}")
+      set(_executable "$<TARGET_FILE:${_target}>")
+
+      # use add_custom_target() to have the batch-file-wrapper generated during build time instead of cmake time
+      add_custom_command(TARGET ${_target} POST_BUILD
+         COMMAND ${CMAKE_COMMAND}
+         -D_filename="${_executable}.bat"
+         -D_ld_library_path="${_ld_library_path}" -D_executable="${_executable}"
+         -D_gnupghome="${GNUPGHOME}"
+         -P ${CMAKE_SOURCE_DIR}/framework/domain/mimetreeparser/tests/kdepim_generate_crypto_test_wrapper.cmake
+         )
+
+      add_test(NAME ${_testname} COMMAND ${_executable}.bat)
+
+   endif (UNIX)
+endmacro (ADD_GPG_CRYPTO_TEST)
+
diff --git a/framework/domain/mimetreeparser/tests/kdepim_generate_crypto_test_wrapper.cmake b/framework/domain/mimetreeparser/tests/kdepim_generate_crypto_test_wrapper.cmake
new file mode 100644
index 00000000..e1412f37
--- /dev/null
+++ b/framework/domain/mimetreeparser/tests/kdepim_generate_crypto_test_wrapper.cmake
@@ -0,0 +1,45 @@
+# Copyright (c) 2006, Alexander Neundorf, <neundorf@kde.org>
+# Copyright (c) 2013, Sandro Knauß <mail@sandroknauss.de>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+
+if (UNIX)
+
+file(WRITE "${_filename}"
+"#!/bin/sh
+# created by cmake, don't edit, changes will be lost
+
+# don't mess with a gpg-agent already running on the system
+unset GPG_AGENT_INFO
+
+${_library_path_variable}=${_ld_library_path}\${${_library_path_variable}:+:\$${_library_path_variable}} GNUPGHOME=${_gnupghome} gpg-agent --daemon \"${_executable}\" \"$@\"
+_result=$?
+_pid=`echo GETINFO pid | GNUPGHOME=${_gnupghome} gpg-connect-agent | grep 'D' | cut -d' ' -f2`
+if [ ! -z \"\$_pid\" ]; then
+    echo \"Waiting for gpg-agent to terminate (PID: $_pid)...\"
+    while kill -0 \"\$_pid\"; do
+        sleep 1
+    done
+fi
+exit \$_result
+")
+
+# make it executable
+# since this is only executed on UNIX, it is safe to call chmod
+exec_program(chmod ARGS ug+x \"${_filename}\" OUTPUT_VARIABLE _dummy )
+
+else (UNIX)
+
+file(TO_NATIVE_PATH "${_ld_library_path}" win_path)
+file(TO_NATIVE_PATH "${_gnupghome}" win_gnupghome)
+
+file(WRITE "${_filename}"
+"
+set PATH=${win_path};$ENV{PATH}
+set GNUPGHOME=${win_gnupghome};$ENV{GNUPGHOME}
+gpg-agent --daemon \"${_executable}\" %*
+")
+
+endif (UNIX)
diff --git a/framework/domain/mimetreeparser/thoughts.txt b/framework/domain/mimetreeparser/thoughts.txt
new file mode 100644
index 00000000..3340347a
--- /dev/null
+++ b/framework/domain/mimetreeparser/thoughts.txt
@@ -0,0 +1,148 @@
+Usecases:
+
+# plaintext msg + attachment
+* ContentPart => cp1
+* AttachmentPart => ap1
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+(PlainText) == cp1.availableContent()
+
+# html msg + related attachment + normal attachment
+* ContentPart => cp1
+* AttachmentPart(mimetype="*/related", cid="12345678") => ap1
+* AttachmentPart => ap2
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1, ap2) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+(ap2) == collect<AttachmentParts>(select=NoEncapsulatedMessages, filter=filterelated)
+
+ap1 == getPart("cid:12345678")
+
+(Html) == cp1.availableContent()
+
+# alternative msg + attachment
+* ContentPart(html=[Content("HTML"),], plaintext=[Content("Text"),]) => cp1
+* AttachmentPart => ap1
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+(Html, PlainText) == cp1.availableContent()
+[Content("HTML"),] == cp1.content(Html)
+[Content("Text"),] == cp1.content(Plaintext)
+
+# alternative msg with GPGInlin
+* ContentPart(
+    plaintext=[Content("Text"), Content("foo", encryption=(enc1))],
+    html=[Content("HTML"),]
+  ) => cp1
+
+(Html, PlainText) == cp1.availableContent()
+
+[Content("HTML"),] == cp1.content(Html)
+[Content("Text"),Content("foo", encryption=(enc1))] == cp1.content(Plaintext)
+
+
+# encrypted msg (not encrypted/error) with unencrypted attachment
+* EncryptionErrorPart => cp1
+* AttachmentPart => ap1
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+#encrypted msg (decrypted with attachment) + unencrypted attachment
+* encrytion=(rec1,rec2) => enc1
+    * ContentPart(encrytion = (enc1,)) => cp1 
+    * AttachmentPart(encryption = (enc1,)) => ap1
+* AttachmentPart => ap2
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1, ap2) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+#INLINE GPG encrypted msg + attachment
+* ContentPart => cp1 with
+  plaintext=[Content, Content(encrytion = (enc1(rec1,rec2),)), Content(signed = (sig1,)), Content]
+* AttachmentPart => ap1
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1) == collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+[Content, Content(encrytion = (enc1(rec1,rec2),)), Content(signed = (sig1,)), Content] == cp1.content(Plaintext)
+
+#forwared encrypted msg + attachments
+* ContentPart => cp1
+* EncapsulatedPart => ep1
+    * Encrytion=(rec1,rec2) => enc1
+        * Signature => sig1
+            * ContentPart(encrytion = (enc1,), signature = (sig1,)) => cp2
+                * Content(encrytion = (enc1,), signature = (sig1,))
+                * Content(encrytion = (enc1, enc2(rec3,rec4),), signature = (sig1,))
+            * AttachmentPart(encrytion = (enc1,), signature = (sig1,)) => ap1
+* AttachmentPart => ap2
+
+(cp1) = collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap2) = collect<AttachmentParts>(select=NoEncapsulatedMessages)
+
+(cp2) = collect<ContentPart>(ep1, select=NoEncapsulatedMessages)
+(ap1) = collect<AttachmentParts>(ep1, select=NoEncapsulatedMessages)
+
+(cp1, cp2) == collect<ContentPart>()
+(ap1, ap2) == collect<AttachmentParts>()[Content, Content(encrytion = (enc1(rec1,rec2),)), Content(signed = (sig1,)), Content]
+
+
+# plaintext msg + attachment + cert
+* ContentPart => cp1
+* AttachmentPart => ap1
+* CertPart => cep1
+
+(cp1) == collect<ContentPart>(select=NoEncapsulatedMessages)
+(ap1, cep1) == collect<AttachmentPart>(select=NoEncapsulatedMessages)
+(ap1) == collect<AttachmentPart>(select=NoEncapsulatedMessages, filter=filterSubAttachmentParts)
+
+(cep1) == collect<CertPart>(select=NoEncapsulatedMessages)
+
+
+collect function:
+
+bool noEncapsulatedMessages(Part part)
+{
+    if (is<EncapsulatedPart>(part)) {
+        return false;
+    }
+    return true;
+}
+
+bool filterRelated(T part)
+{
+    if (part.mimetype == related && !part.cid.isEmpty()) {
+        return false; //filter out related parts
+    }
+    return true;
+}
+
+bool filterSubAttachmentParts(AttachmentPart part)
+{
+    if (isSubPart<AttachmentPart>(part)) {
+        return false; // filter out CertPart f.ex.
+    }
+    return true;
+}
+
+List<T> collect<T>(Part start, std::function<bool(const Part &)> select, std::function<bool(const std::shared_ptr<T> &)> filter) {
+    List<T> col;
+    if (!select(start)) {
+        return col;
+    }
+
+    if(isOrSubTypeIs<T>(start) && filter(start.staticCast<T>)){
+        col.append(p);
+    }
+    foreach(childs as child) {
+        if (select(child)) {
+            col.expand(collect(child,select,filter);
+        }
+    }
+    return col;
+}
\ No newline at end of file