Support encrypted mails forwarding

Summary:
Some notes:

- What we do is: if the mail is encrypted, decrypt it and copy its content into a new message (with plaintext, html and attachments, if any), and use this message as attachment for forwarding
- The `isEncrypted` function from KMime doesn't seem to detect every kind of encrypted mails. AFAIK this structure is not detected:
  - `multipart/mixed`
    - `text/plain`
    - `application/pgp-encrypted` (attachement, named "ATT00001")
    - `application/octet-stream` (attachment named "encrypted.asc")

Reviewers: cmollekopf

Tags: PHID-PROJ-6npnfcmppynqynn7slmv

Maniphest Tasks: T8112, T7024

Differential Revision: https://phabricator.kde.org/D10966

1 files changed, 11 insertions, 10 deletions

diff --git a/framework/src/domain/composercontroller.cpp b/framework/src/domain/composercontroller.cpp
index 09d4c154..2286a71b 100644
--- a/framework/src/domain/composercontroller.cpp
+++ b/framework/src/domain/composercontroller.cpp
@@ -99,19 +99,19 @@ class AddresseeController : public Kube::ListPropertyController
 public:
 
     bool mFoundAllKeys = true;
+
     QSet<QByteArray> mMissingKeys;
-    AddresseeController()
-        : Kube::ListPropertyController{{"name", "keyFound", "key"}}
+    AddresseeController() : Kube::ListPropertyController{{"name", "keyFound", "key"}}
     {
-        QObject::connect(this, &Kube::ListPropertyController::added, this, [this] (const QByteArray &id, const QVariantMap &map) {
-            findKey(id, map.value("name").toString());
-        });
+        QObject::connect(
+            this, &Kube::ListPropertyController::added, this, [this](const QByteArray &id, const QVariantMap &map) {
+                findKey(id, map.value("name").toString());
+            });
+
         QObject::connect(this, &Kube::ListPropertyController::removed, this, [this] (const QByteArray &id) {
             mMissingKeys.remove(id);
             setFoundAllKeys(mMissingKeys.isEmpty());
         });
-
-
     }
 
     bool foundAllKeys()
@@ -133,12 +133,13 @@ public:
         mb.fromUnicodeString(addressee);
 
         SinkLog() << "Searching key for: " << mb.address();
-        asyncRun<std::vector<GpgME::Key>>(this, [mb] {
+        asyncRun<std::vector<GpgME::Key>>(this,
+            [mb] {
                 return MailCrypto::findKeys(QStringList{} << mb.address(), false, false, MailCrypto::OPENPGP);
             },
             [this, addressee, id](const std::vector<GpgME::Key> &keys) {
                 if (!keys.empty()) {
-                    if (keys.size() > 1 ) {
+                    if (keys.size() > 1) {
                         SinkWarning() << "Found more than one key, encrypting to all of them.";
                     }
                     SinkLog() << "Found key: " << keys.front().primaryFingerprint();
@@ -154,7 +155,7 @@ public:
 
     void set(const QStringList &list)
     {
-        for (const auto &email: list) {
+        for (const auto &email : list) {
             add({{"name", email}});
         }
     }