From 7c552ddb38eec6a5d2ad440a5a6ccf73810c4cd4 Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Sat, 29 Oct 2022 10:23:58 +0300
Subject: [PATCH] added detection of PS4 PKG image (magic is 0x7F434E54)

---
 shadPS4/emulator/Loader.cpp     | 24 ++++++++++++++++++++++++
 shadPS4/emulator/Loader.h       | 10 ++++++++++
 shadPS4/gui/shadps4gui.cpp      | 12 +++++++++++-
 shadPS4/shadPS4.vcxproj         |  2 ++
 shadPS4/shadPS4.vcxproj.filters |  6 ++++++
 5 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 shadPS4/emulator/Loader.cpp
 create mode 100644 shadPS4/emulator/Loader.h

diff --git a/shadPS4/emulator/Loader.cpp b/shadPS4/emulator/Loader.cpp
new file mode 100644
index 00000000..c01f4a4d
--- /dev/null
+++ b/shadPS4/emulator/Loader.cpp
@@ -0,0 +1,24 @@
+#include "Loader.h"
+#include "../core/FsFile.h"
+
+FileTypes detectFileType(const std::string& filepath)
+{
+	if (filepath.size() == 0)//no file loaded
+	{
+		return FILETYPE_UNKNOWN;
+	}
+	FsFile file;
+	file.Open(filepath, fsRead);
+	file.Seek(0, fsSeekSet);
+	U32 magic;
+	file.Read(&magic, sizeof(magic));
+	file.Close();
+	ReadBE(magic);//magic is BE make it LE
+	switch (magic)
+	{
+	case 0x7F434E54://PS4 PKG
+		return FILETYPE_PKG;
+	}
+	return FILETYPE_UNKNOWN;
+
+}
diff --git a/shadPS4/emulator/Loader.h b/shadPS4/emulator/Loader.h
new file mode 100644
index 00000000..d1fd765d
--- /dev/null
+++ b/shadPS4/emulator/Loader.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <string>
+
+enum FileTypes
+{
+	FILETYPE_UNKNOWN,
+	FILETYPE_PKG
+};
+FileTypes detectFileType(const std::string& filepath);
diff --git a/shadPS4/gui/shadps4gui.cpp b/shadPS4/gui/shadps4gui.cpp
index c7933610..6d6889b9 100644
--- a/shadPS4/gui/shadps4gui.cpp
+++ b/shadPS4/gui/shadps4gui.cpp
@@ -1,4 +1,6 @@
 #include "shadps4gui.h"
+#include "../emulator/Loader.h"
+#include <QFileDialog>
 #include <QDir>
 #include <QMessageBox>
 shadps4gui::shadps4gui(QWidget *parent)
@@ -17,5 +19,13 @@ shadps4gui::~shadps4gui()
 
 void shadps4gui::installPKG()
 {
-	QMessageBox::critical(this, "PKG ERROR", "Not yet", QMessageBox::Ok, 0);
+	std::string file(QFileDialog::getOpenFileName(this, tr("Install PKG File"), QDir::currentPath(), tr("PKG File (*.PKG)")).toStdString());
+	if (detectFileType(file) == FILETYPE_PKG)
+	{
+
+	}
+	else
+	{
+		QMessageBox::critical(this, "PKG ERROR", "File doesn't appear to be a valid PKG file", QMessageBox::Ok, 0);
+	}
 }
diff --git a/shadPS4/shadPS4.vcxproj b/shadPS4/shadPS4.vcxproj
index 698a9717..0923605c 100644
--- a/shadPS4/shadPS4.vcxproj
+++ b/shadPS4/shadPS4.vcxproj
@@ -13,6 +13,7 @@
   <ItemGroup>
     <ClCompile Include="core\FsFile.cpp" />
     <ClCompile Include="emulator\fileFormat\PSF.cpp" />
+    <ClCompile Include="emulator\Loader.cpp" />
     <ClCompile Include="gui\GameListViewer.cpp" />
     <ClCompile Include="gui\shadps4gui.cpp" />
     <ClCompile Include="main.cpp" />
@@ -29,6 +30,7 @@
   <ItemGroup>
     <ClInclude Include="core\FsFile.h" />
     <ClInclude Include="emulator\fileFormat\PSF.h" />
+    <ClInclude Include="emulator\Loader.h" />
     <ClInclude Include="Types.h" />
   </ItemGroup>
   <PropertyGroup Label="Globals">
diff --git a/shadPS4/shadPS4.vcxproj.filters b/shadPS4/shadPS4.vcxproj.filters
index bfe0d7f8..4eac2ac3 100644
--- a/shadPS4/shadPS4.vcxproj.filters
+++ b/shadPS4/shadPS4.vcxproj.filters
@@ -50,6 +50,9 @@
     <ClCompile Include="emulator\fileFormat\PSF.cpp">
       <Filter>emulator\fileFormat</Filter>
     </ClCompile>
+    <ClCompile Include="emulator\Loader.cpp">
+      <Filter>emulator</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <QtUic Include="gui\shadps4gui.ui">
@@ -74,5 +77,8 @@
     <ClInclude Include="emulator\fileFormat\PSF.h">
       <Filter>emulator\fileFormat</Filter>
     </ClInclude>
+    <ClInclude Include="emulator\Loader.h">
+      <Filter>emulator</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
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