From 711e9e917d182120e8f06c5547c406acce46c0fb Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Sun, 30 Oct 2022 17:28:49 +0200
Subject: [PATCH] some intial work on PKG reading

---
 shadPS4/core/FsFile.h               |  8 ++++++++
 shadPS4/emulator/fileFormat/PKG.cpp | 31 +++++++++++++++++++++++++++++
 shadPS4/emulator/fileFormat/PKG.h   | 29 +++++++++++++++++++++++++++
 shadPS4/gui/shadps4gui.cpp          |  8 +++++++-
 shadPS4/shadPS4.vcxproj             |  2 ++
 shadPS4/shadPS4.vcxproj.filters     |  6 ++++++
 6 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 shadPS4/emulator/fileFormat/PKG.cpp
 create mode 100644 shadPS4/emulator/fileFormat/PKG.h

diff --git a/shadPS4/core/FsFile.h b/shadPS4/core/FsFile.h
index 705fad6f..79984cf8 100644
--- a/shadPS4/core/FsFile.h
+++ b/shadPS4/core/FsFile.h
@@ -34,6 +34,14 @@ public:
 	U64 Tell() const;
 	~FsFile();
 
+	template< typename T > bool ReadBE(T& dst)
+	{
+		if (!Read(&dst, sizeof(T))) {
+			return false;
+		}
+		::ReadBE(dst);
+		return true;
+	}
 
 	const char* getOpenMode(fsOpenMode mode)
 	{
diff --git a/shadPS4/emulator/fileFormat/PKG.cpp b/shadPS4/emulator/fileFormat/PKG.cpp
new file mode 100644
index 00000000..571bee4a
--- /dev/null
+++ b/shadPS4/emulator/fileFormat/PKG.cpp
@@ -0,0 +1,31 @@
+#include "PKG.h"
+#include "../../core/FsFile.h"
+
+PKG::PKG()
+{
+}
+
+
+PKG::~PKG()
+{
+}
+
+bool PKG::open(const std::string& filepath) {
+	FsFile file;
+	if (!file.Open(filepath, fsRead))
+	{
+		return false;
+	}
+	pkgSize = file.getFileSize();
+	PKGHeader pkgheader;
+	file.ReadBE(pkgheader);
+	//we have already checked magic should be ok
+
+	//find title id it is part of pkg_content_id starting at offset 0x40
+	file.Seek(0x47, fsSeekSet);//skip first 7 characters of content_id 
+	file.Read(&pkgTitleID, sizeof(pkgTitleID));
+
+	file.Close();
+
+	return true;
+}
\ No newline at end of file
diff --git a/shadPS4/emulator/fileFormat/PKG.h b/shadPS4/emulator/fileFormat/PKG.h
new file mode 100644
index 00000000..d1a512c6
--- /dev/null
+++ b/shadPS4/emulator/fileFormat/PKG.h
@@ -0,0 +1,29 @@
+#pragma once
+#include <string>
+#include "../../Types.h"
+
+struct PKGHeader {
+	/*BE*/U32 magic;                  // Magic
+};
+
+class PKG
+{
+private:
+	U08* pkg;
+	U64 pkgSize = 0;
+	S08 pkgTitleID[9];
+
+public:
+	PKG();
+	~PKG();
+	bool open(const std::string& filepath);
+	U64 getPkgSize()
+	{
+		return pkgSize;
+	}
+	std::string getTitleID()
+	{
+		return std::string(pkgTitleID);
+	}
+};
+
diff --git a/shadPS4/gui/shadps4gui.cpp b/shadPS4/gui/shadps4gui.cpp
index 6d6889b9..ebfe1e81 100644
--- a/shadPS4/gui/shadps4gui.cpp
+++ b/shadPS4/gui/shadps4gui.cpp
@@ -1,8 +1,12 @@
 #include "shadps4gui.h"
 #include "../emulator/Loader.h"
+#include "../emulator/fileFormat/PKG.h"
+#include "../core/FsFile.h"
 #include <QFileDialog>
 #include <QDir>
 #include <QMessageBox>
+#include <QProgressDialog>
+
 shadps4gui::shadps4gui(QWidget *parent)
 	: QMainWindow(parent)
 {
@@ -22,7 +26,9 @@ void shadps4gui::installPKG()
 	std::string file(QFileDialog::getOpenFileName(this, tr("Install PKG File"), QDir::currentPath(), tr("PKG File (*.PKG)")).toStdString());
 	if (detectFileType(file) == FILETYPE_PKG)
 	{
-
+		PKG pkg;
+		pkg.open(file);
+		
 	}
 	else
 	{
diff --git a/shadPS4/shadPS4.vcxproj b/shadPS4/shadPS4.vcxproj
index 0923605c..78e86485 100644
--- a/shadPS4/shadPS4.vcxproj
+++ b/shadPS4/shadPS4.vcxproj
@@ -12,6 +12,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="core\FsFile.cpp" />
+    <ClCompile Include="emulator\fileFormat\PKG.cpp" />
     <ClCompile Include="emulator\fileFormat\PSF.cpp" />
     <ClCompile Include="emulator\Loader.cpp" />
     <ClCompile Include="gui\GameListViewer.cpp" />
@@ -29,6 +30,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="core\FsFile.h" />
+    <ClInclude Include="emulator\fileFormat\PKG.h" />
     <ClInclude Include="emulator\fileFormat\PSF.h" />
     <ClInclude Include="emulator\Loader.h" />
     <ClInclude Include="Types.h" />
diff --git a/shadPS4/shadPS4.vcxproj.filters b/shadPS4/shadPS4.vcxproj.filters
index 4eac2ac3..9ca77d91 100644
--- a/shadPS4/shadPS4.vcxproj.filters
+++ b/shadPS4/shadPS4.vcxproj.filters
@@ -53,6 +53,9 @@
     <ClCompile Include="emulator\Loader.cpp">
       <Filter>emulator</Filter>
     </ClCompile>
+    <ClCompile Include="emulator\fileFormat\PKG.cpp">
+      <Filter>emulator\fileFormat</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <QtUic Include="gui\shadps4gui.ui">
@@ -80,5 +83,8 @@
     <ClInclude Include="emulator\Loader.h">
       <Filter>emulator</Filter>
     </ClInclude>
+    <ClInclude Include="emulator\fileFormat\PKG.h">
+      <Filter>emulator\fileFormat</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file