From 0f53b90e908db3823329c411cc96931936dcdaab Mon Sep 17 00:00:00 2001
From: Birunthan Mohanathas <birunthan@mohanathas.com>
Date: Thu, 27 Jul 2017 15:05:30 -0700
Subject: [PATCH] SkinInstaller: Fix installing and creating .rmskin files with
 Unicode characters path

This also cherry-picks
https://github.com/madler/zlib/commit/89e335abb49cd5c7d29d94e8f506d3f8ed71315a
---
 Library/DialogInstall.cpp      | 6 +++++-
 Library/DialogPackage.cpp      | 6 +++++-
 Library/zlib/minizip/iowin32.c | 4 ++--
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/Library/DialogInstall.cpp b/Library/DialogInstall.cpp
index f1039adc8..ece0c08ef 100644
--- a/Library/DialogInstall.cpp
+++ b/Library/DialogInstall.cpp
@@ -13,6 +13,8 @@
 #include "System.h"
 #include "../Version.h"
 
+#include "iowin32.h"
+
 #define WM_DELAYED_CLOSE WM_APP + 0
 
 extern GlobalData g_Data;
@@ -374,7 +376,9 @@ bool DialogInstall::ReadPackage()
 		return false;
 	}
 
-	m_PackageUnzFile = unzOpen(StringUtil::Narrow(fileName).c_str());
+  zlib_filefunc64_def zlibFileFunc;
+  fill_win32_filefunc64W(&zlibFileFunc);
+  m_PackageUnzFile = unzOpen2_64(fileName, &zlibFileFunc);
 	if (!m_PackageUnzFile)
 	{
 		return false;
diff --git a/Library/DialogPackage.cpp b/Library/DialogPackage.cpp
index 30d7f2c31..994df65bd 100644
--- a/Library/DialogPackage.cpp
+++ b/Library/DialogPackage.cpp
@@ -13,6 +13,8 @@
 #include "resource.h"
 #include "../Version.h"
 
+#include "iowin32.h"
+
 #define WM_DELAYED_CLOSE WM_APP + 0
 
 extern GlobalData g_Data;
@@ -255,7 +257,9 @@ bool DialogPackage::CreatePackage()
 	m_AllowNonAsciiFilenames = DialogInstall::CompareVersions(m_MinimumRainmeter, L"3.0.1") != -1;
 
 	// Create archive and add options file and header bitmap
-	m_ZipFile = zipOpen(StringUtil::Narrow(m_TargetFile.c_str()).c_str(), APPEND_STATUS_CREATE);
+  zlib_filefunc64_def zlibFileFunc;
+  fill_win32_filefunc64W(&zlibFileFunc);
+  m_ZipFile = zipOpen2_64(m_TargetFile.c_str(), APPEND_STATUS_CREATE, nullptr, &zlibFileFunc);
 
 	auto cleanup = [&]()->bool
 	{
diff --git a/Library/zlib/minizip/iowin32.c b/Library/zlib/minizip/iowin32.c
index 711214758..52a44fc16 100644
--- a/Library/zlib/minizip/iowin32.c
+++ b/Library/zlib/minizip/iowin32.c
@@ -243,7 +243,7 @@ static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *n
     return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
 #else
     LONG lHigh = pos.HighPart;
-    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, FILE_CURRENT);
+    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod);
     BOOL fOk = TRUE;
     if (dwNewPos == 0xFFFFFFFF)
         if (GetLastError() != NO_ERROR)
@@ -370,7 +370,7 @@ long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T off
     {
         LARGE_INTEGER pos;
         pos.QuadPart = offset;
-        if (!MySetFilePointerEx(hFile, pos, NULL, FILE_CURRENT))
+        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
         {
             DWORD dwErr = GetLastError();
             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;