From 99913b1b08b3d32eecc4353c4937c16ba318f1be Mon Sep 17 00:00:00 2001
From: tpu <tpunix@126.com>
Date: Tue, 8 Oct 2013 15:54:28 +0800
Subject: [PATCH] add scePauth support

---
 Core/HLE/scePauth.cpp | 51 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 47 insertions(+), 4 deletions(-)

diff --git a/Core/HLE/scePauth.cpp b/Core/HLE/scePauth.cpp
index eca152a17b..8882008c3f 100644
--- a/Core/HLE/scePauth.cpp
+++ b/Core/HLE/scePauth.cpp
@@ -18,17 +18,60 @@
 #include "HLE.h"
 
 #include "scePauth.h"
+#include "zlib.h"
 
 int scePauth_F7AA47F6(u32 srcPtr, int srcLength, u32 destLengthPtr, u32 workArea)
 {
-	ERROR_LOG(HLE, "UNIMPL scePauth_F7AA47F6(%d, %d, %d, %d)", srcPtr, srcLength, destLengthPtr, workArea);
+	ERROR_LOG(HLE, "UNIMPL scePauth_F7AA47F6(%08x, %08x, %08x, %08x)", srcPtr, srcLength, destLengthPtr, workArea);
 	return 0;
 }
 
 int scePauth_98B83B5D(u32 srcPtr, int srcLength, u32 destLengthPtr, u32 workArea)
 {
-	ERROR_LOG(HLE, "UNIMPL scePauth_98B83B5D(%d, %d, %d, %d)", srcPtr, srcLength, destLengthPtr, workArea);
-	return 0;
+	u8 *src, *key;
+	u32 crc;
+	char path[256], name[256];
+	std::string hostPath;
+	FILE *fp;
+	int size;
+
+	INFO_LOG(HLE, "scePauth_98B83B5D(%08x, %08x, %08x, %08x)", srcPtr, srcLength, destLengthPtr, workArea);
+
+	sprintf(name, "ms0:/PAUTH");
+	pspFileSystem.GetHostPath(std::string(name), hostPath);
+
+	src = (u8*) Memory::GetPointer(srcPtr);
+	key = (u8*) Memory::GetPointer(workArea);
+	crc = crc32(0, src, srcLength);
+
+	sprintf(name, "%s/pauth_%08x.bin.decrypt", hostPath.c_str(), crc);
+	fp = fopen(name, "rb");
+	if(fp){
+		fseek(fp, 0, SEEK_END);
+		size = ftell(fp);
+		fseek(fp, 0, SEEK_SET);
+		fread(src, 1, size, fp);
+		fclose(fp);
+		Memory::Write_U32(size, destLengthPtr);
+		INFO_LOG(HLE, "    read from decrypted file %s", name);
+		return 0;
+	}
+
+	pspFileSystem.MkDir("ms0:/PAUTH");
+
+	sprintf(name, "%s/pauth_%08x.bin", hostPath.c_str(), crc);
+	ERROR_LOG(HLE, "    no decrypted file found! save as %s", name);
+
+	fp = fopen(name, "wb");
+	fwrite(src, 1, srcLength, fp);
+	fclose(fp);
+
+	sprintf(name, "%s/pauth_%08x.key", hostPath.c_str(), crc);
+	fp = fopen(name, "wb");
+	fwrite(key, 1, 16, fp);
+	fclose(fp);
+
+	return -1;
 }
 
 const HLEFunction scePauth[] = {
@@ -39,4 +82,4 @@ const HLEFunction scePauth[] = {
 void Register_scePauth()
 {
 	RegisterModule("scePauth", ARRAY_SIZE(scePauth), scePauth);
-}
\ No newline at end of file
+}