Fix: signal/slot macro -> func pointer & network fixes

- convert qt connect calls to use function pointers instead of the signal/slot macros wherever practical (UI classes were mostly left alone, target was tasks and processes)
- give signals an explicit receivers to use the static method over the instance method wherever practical
- ensure networks tasks are using the `errorOccured` signal added in Qt5.15 over the deprecated `error` signal
- ensure all networks tasks have an sslErrors signal connected
- add seemingly missing `MinecraftAccount::authSucceeded` connection for `MSAInteractive` login flow

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

9 files changed, 82 insertions, 39 deletions

diff --git a/launcher/minecraft/WorldList.cpp b/launcher/minecraft/WorldList.cpp
index ae29a972..de21c474 100644
--- a/launcher/minecraft/WorldList.cpp
+++ b/launcher/minecraft/WorldList.cpp
@@ -53,8 +53,7 @@ WorldList::WorldList(const QString &dir)
     m_dir.setSorting(QDir::Name | QDir::IgnoreCase | QDir::LocaleAware);
     m_watcher = new QFileSystemWatcher(this);
     is_watching = false;
-    connect(m_watcher, SIGNAL(directoryChanged(QString)), this,
-            SLOT(directoryChanged(QString)));
+    connect(m_watcher, &QFileSystemWatcher::directoryChanged, this, &WorldList::directoryChanged);
 }
 
 void WorldList::startWatching()
diff --git a/launcher/minecraft/auth/AuthRequest.cpp b/launcher/minecraft/auth/AuthRequest.cpp
index bb82e1e2..a21634b7 100644
--- a/launcher/minecraft/auth/AuthRequest.cpp
+++ b/launcher/minecraft/auth/AuthRequest.cpp
@@ -55,12 +55,12 @@ void AuthRequest::get(const QNetworkRequest &req, int timeout/* = 60*1000*/) {
     reply_ = APPLICATION->network()->get(request_);
     status_ = Requesting;
     timedReplies_.add(new Katabasis::Reply(reply_, timeout));
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-    connect(reply_, SIGNAL(errorOccurred(QNetworkReply::NetworkError)), this, SLOT(onRequestError(QNetworkReply::NetworkError)));
-#else
-    connect(reply_, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(onRequestError(QNetworkReply::NetworkError)));
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(reply_, &QNetworkReply::errorOccurred, this, &AuthRequest::onRequestError);
+#else // &QNetworkReply::error SIGNAL depricated
+    connect(reply_, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &AuthRequest::onRequestError);
 #endif
-    connect(reply_, SIGNAL(finished()), this, SLOT(onRequestFinished()));
+    connect(reply_, &QNetworkReply::finished, this, &AuthRequest::onRequestFinished);
     connect(reply_, &QNetworkReply::sslErrors, this, &AuthRequest::onSslErrors);
 }
 
@@ -70,14 +70,14 @@ void AuthRequest::post(const QNetworkRequest &req, const QByteArray &data, int t
     status_ = Requesting;
     reply_ = APPLICATION->network()->post(request_, data_);
     timedReplies_.add(new Katabasis::Reply(reply_, timeout));
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-    connect(reply_, SIGNAL(errorOccurred(QNetworkReply::NetworkError)), this, SLOT(onRequestError(QNetworkReply::NetworkError)));
-#else
-    connect(reply_, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(onRequestError(QNetworkReply::NetworkError)));
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(reply_, &QNetworkReply::errorOccurred, this, &AuthRequest::onRequestError);
+#else // &QNetworkReply::error SIGNAL depricated
+    connect(reply_, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &AuthRequest::onRequestError);
 #endif
-    connect(reply_, SIGNAL(finished()), this, SLOT(onRequestFinished()));
+    connect(reply_, &QNetworkReply::finished, this, &AuthRequest::onRequestFinished);
     connect(reply_, &QNetworkReply::sslErrors, this, &AuthRequest::onSslErrors);
-    connect(reply_, SIGNAL(uploadProgress(qint64,qint64)), this, SLOT(onUploadProgress(qint64,qint64)));
+    connect(reply_, &QNetworkReply::uploadProgress, this, &AuthRequest::onUploadProgress);
 }
 
 void AuthRequest::onRequestFinished() {
diff --git a/launcher/minecraft/auth/MinecraftAccount.cpp b/launcher/minecraft/auth/MinecraftAccount.cpp
index 48cf5d42..3b050ac0 100644
--- a/launcher/minecraft/auth/MinecraftAccount.cpp
+++ b/launcher/minecraft/auth/MinecraftAccount.cpp
@@ -133,8 +133,8 @@ shared_qobject_ptr<AccountTask> MinecraftAccount::login(QString password) {
     Q_ASSERT(m_currentTask.get() == nullptr);
 
     m_currentTask.reset(new MojangLogin(&data, password));
-    connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
-    connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
+    connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
+    connect(m_currentTask.get(), &Task::failed, this, &MinecraftAccount::authFailed);
     connect(m_currentTask.get(), &Task::aborted, this, [this]{ authFailed(tr("Aborted")); });
     emit activityChanged(true);
     return m_currentTask;
@@ -144,8 +144,8 @@ shared_qobject_ptr<AccountTask> MinecraftAccount::loginMSA() {
     Q_ASSERT(m_currentTask.get() == nullptr);
 
     m_currentTask.reset(new MSAInteractive(&data));
-    connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
-    connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
+    connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
+    connect(m_currentTask.get(), &Task::failed, this, &MinecraftAccount::authFailed);
     connect(m_currentTask.get(), &Task::aborted, this, [this]{ authFailed(tr("Aborted")); });
     emit activityChanged(true);
     return m_currentTask;
@@ -155,8 +155,8 @@ shared_qobject_ptr<AccountTask> MinecraftAccount::loginOffline() {
     Q_ASSERT(m_currentTask.get() == nullptr);
 
     m_currentTask.reset(new OfflineLogin(&data));
-    connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
-    connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
+    connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
+    connect(m_currentTask.get(), &Task::failed, this, &MinecraftAccount::authFailed);
     connect(m_currentTask.get(), &Task::aborted, this, [this]{ authFailed(tr("Aborted")); });
     emit activityChanged(true);
     return m_currentTask;
@@ -177,8 +177,8 @@ shared_qobject_ptr<AccountTask> MinecraftAccount::refresh() {
         m_currentTask.reset(new MojangRefresh(&data));
     }
 
-    connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
-    connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
+    connect(m_currentTask.get(), &Task::succeeded, this, &MinecraftAccount::authSucceeded);
+    connect(m_currentTask.get(), &Task::failed, this, &MinecraftAccount::authFailed);
     connect(m_currentTask.get(), &Task::aborted, this, [this]{ authFailed(tr("Aborted")); });
     emit activityChanged(true);
     return m_currentTask;
diff --git a/launcher/minecraft/services/CapeChange.cpp b/launcher/minecraft/services/CapeChange.cpp
index c73a11b6..1d5ea36d 100644
--- a/launcher/minecraft/services/CapeChange.cpp
+++ b/launcher/minecraft/services/CapeChange.cpp
@@ -54,9 +54,14 @@ void CapeChange::setCape(QString& cape) {
     setStatus(tr("Equipping cape"));
 
     m_reply = shared_qobject_ptr<QNetworkReply>(rep);
-    connect(rep, &QNetworkReply::uploadProgress, this, &Task::setProgress);
-    connect(rep, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
-    connect(rep, SIGNAL(finished()), this, SLOT(downloadFinished()));
+    connect(rep, &QNetworkReply::uploadProgress, this, &CapeChange::setProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(rep, &QNetworkReply::errorOccurred, this, &CapeChange::downloadError);
+#else
+    connect(rep, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &CapeChange::downloadError);
+#endif
+    connect(rep, &QNetworkReply::sslErrors, this, &CapeChange::sslErrors);
+    connect(rep, &QNetworkReply::finished, this, &CapeChange::downloadFinished);
 }
 
 void CapeChange::clearCape() {
@@ -68,13 +73,14 @@ void CapeChange::clearCape() {
     setStatus(tr("Removing cape"));
 
     m_reply = shared_qobject_ptr<QNetworkReply>(rep);
-    connect(rep, &QNetworkReply::uploadProgress, this, &Task::setProgress);
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-    connect(rep, SIGNAL(errorOccurred(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, &QNetworkReply::uploadProgress, this, &CapeChange::setProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(rep, &QNetworkReply::errorOccurred, this, &CapeChange::downloadError);
 #else
-    connect(rep, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &CapeChange::downloadError);
 #endif
-    connect(rep, SIGNAL(finished()), this, SLOT(downloadFinished()));
+    connect(rep, &QNetworkReply::sslErrors, this, &CapeChange::sslErrors);
+    connect(rep, &QNetworkReply::finished, this, &CapeChange::downloadFinished);
 }
 
 
@@ -95,6 +101,17 @@ void CapeChange::downloadError(QNetworkReply::NetworkError error)
     emitFailed(m_reply->errorString());
 }
 
+void CapeChange::sslErrors(const QList<QSslError>& errors)
+{
+    int i = 1;
+    for (auto error : errors) {
+        qCritical() << "Cape change SSL Error #" << i << " : " << error.errorString();
+        auto cert = error.certificate();
+        qCritical() << "Certificate in question:\n" << cert.toText();
+        i++;
+    }
+}
+
 void CapeChange::downloadFinished()
 {
     // if the download failed
diff --git a/launcher/minecraft/services/CapeChange.h b/launcher/minecraft/services/CapeChange.h
index 185d69b6..38069f90 100644
--- a/launcher/minecraft/services/CapeChange.h
+++ b/launcher/minecraft/services/CapeChange.h
@@ -27,6 +27,7 @@ protected:
 
 public slots:
     void downloadError(QNetworkReply::NetworkError);
+    void sslErrors(const QList<QSslError>& errors);
     void downloadFinished();
 };
 
diff --git a/launcher/minecraft/services/SkinDelete.cpp b/launcher/minecraft/services/SkinDelete.cpp
index 921bd094..fbaaeacb 100644
--- a/launcher/minecraft/services/SkinDelete.cpp
+++ b/launcher/minecraft/services/SkinDelete.cpp
@@ -53,13 +53,14 @@ void SkinDelete::executeTask()
     m_reply = shared_qobject_ptr<QNetworkReply>(rep);
 
     setStatus(tr("Deleting skin"));
-    connect(rep, &QNetworkReply::uploadProgress, this, &Task::setProgress);
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-    connect(rep, SIGNAL(errorOccurred(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, &QNetworkReply::uploadProgress, this, &SkinDelete::setProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(rep, &QNetworkReply::errorOccurred, this, &SkinDelete::downloadError);
 #else
-    connect(rep, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &SkinDelete::downloadError);
 #endif
-    connect(rep, SIGNAL(finished()), this, SLOT(downloadFinished()));
+    connect(rep, &QNetworkReply::sslErrors, this, &SkinDelete::sslErrors);
+    connect(rep, &QNetworkReply::finished, this, &SkinDelete::downloadFinished);
 }
 
 void SkinDelete::downloadError(QNetworkReply::NetworkError error)
@@ -69,6 +70,17 @@ void SkinDelete::downloadError(QNetworkReply::NetworkError error)
     emitFailed(m_reply->errorString());
 }
 
+void SkinDelete::sslErrors(const QList<QSslError>& errors)
+{
+    int i = 1;
+    for (auto error : errors) {
+        qCritical() << "Skin Delete SSL Error #" << i << " : " << error.errorString();
+        auto cert = error.certificate();
+        qCritical() << "Certificate in question:\n" << cert.toText();
+        i++;
+    }
+}
+
 void SkinDelete::downloadFinished()
 {
     // if the download failed
diff --git a/launcher/minecraft/services/SkinDelete.h b/launcher/minecraft/services/SkinDelete.h
index 83a84685..b9a1c9d3 100644
--- a/launcher/minecraft/services/SkinDelete.h
+++ b/launcher/minecraft/services/SkinDelete.h
@@ -22,5 +22,6 @@ protected:
 
 public slots:
     void downloadError(QNetworkReply::NetworkError);
+    void sslErrors(const QList<QSslError>& errors);
     void downloadFinished();
 };
diff --git a/launcher/minecraft/services/SkinUpload.cpp b/launcher/minecraft/services/SkinUpload.cpp
index c7987875..711f8739 100644
--- a/launcher/minecraft/services/SkinUpload.cpp
+++ b/launcher/minecraft/services/SkinUpload.cpp
@@ -78,13 +78,14 @@ void SkinUpload::executeTask()
     m_reply = shared_qobject_ptr<QNetworkReply>(rep);
 
     setStatus(tr("Uploading skin"));
-    connect(rep, &QNetworkReply::uploadProgress, this, &Task::setProgress);
-#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
-    connect(rep, SIGNAL(errorOccurred(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, &QNetworkReply::uploadProgress, this, &SkinUpload::setProgress);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0) // QNetworkReply::errorOccurred added in 5.15
+    connect(rep, &QNetworkReply::errorOccurred, this, &SkinUpload::downloadError);
 #else
-    connect(rep, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(downloadError(QNetworkReply::NetworkError)));
+    connect(rep, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &SkinUpload::downloadError);
 #endif
-    connect(rep, SIGNAL(finished()), this, SLOT(downloadFinished()));
+    connect(rep, &QNetworkReply::sslErrors, this, &SkinUpload::sslErrors);
+    connect(rep, &QNetworkReply::finished, this, &SkinUpload::downloadFinished);
 }
 
 void SkinUpload::downloadError(QNetworkReply::NetworkError error)
@@ -94,6 +95,17 @@ void SkinUpload::downloadError(QNetworkReply::NetworkError error)
     emitFailed(m_reply->errorString());
 }
 
+void SkinUpload::sslErrors(const QList<QSslError>& errors)
+{
+    int i = 1;
+    for (auto error : errors) {
+        qCritical() << "Skin Upload SSL Error #" << i << " : " << error.errorString();
+        auto cert = error.certificate();
+        qCritical() << "Certificate in question:\n" << cert.toText();
+        i++;
+    }
+}
+
 void SkinUpload::downloadFinished()
 {
     // if the download failed
diff --git a/launcher/minecraft/services/SkinUpload.h b/launcher/minecraft/services/SkinUpload.h
index 2c1f0a2e..ac8c5b36 100644
--- a/launcher/minecraft/services/SkinUpload.h
+++ b/launcher/minecraft/services/SkinUpload.h
@@ -32,6 +32,7 @@ protected:
 public slots:
 
     void downloadError(QNetworkReply::NetworkError);
+    void sslErrors(const QList<QSslError>& errors);
 
     void downloadFinished();
 };