Andrew Eikum : oleaut32: Allow typelib filenames longer than MAX_PATH.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 4a7b5856daa5ce09bb52c2baa3d524a5ea1cae1b
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=4a7b5856daa5ce09bb52c2baa3...

Author: Andrew Eikum 
Date:   Mon Mar 23 09:56:58 2015 -0500

oleaut32: Allow typelib filenames longer than MAX_PATH.

---

dlls/oleaut32/typelib.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/dlls/oleaut32/typelib.c b/dlls/oleaut32/typelib.c
index 54dbc05..b8325c0 100644
--- a/dlls/oleaut32/typelib.c
+++ b/dlls/oleaut32/typelib.c
@@ -3353,18 +3353,27 @@ static HRESULT TLB_ReadTypeLib(LPCWSTR pszFileName, LPWSTR pszPath, UINT cchPath

h = CreateFileW(pszPath, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
     if(h != INVALID_HANDLE_VALUE){
-        FILE_NAME_INFORMATION *info;
-        char data[MAX_PATH * sizeof(WCHAR) + sizeof(info->FileNameLength)];
+        FILE_NAME_INFORMATION size_info;
         BOOL br;

-        info = (FILE_NAME_INFORMATION*)data;
         /* GetFileInformationByHandleEx returns the path of the file without
          * WOW64 redirection */
-        br = GetFileInformationByHandleEx(h, FileNameInfo, data, sizeof(data));
-        if(br){
-            info->FileName[info->FileNameLength / sizeof(WCHAR)] = 0;
-            lstrcpynW(pszPath + 2, info->FileName, cchPath - 2);
+        br = GetFileInformationByHandleEx(h, FileNameInfo, &size_info, sizeof(size_info));
+        if(br || GetLastError() == ERROR_MORE_DATA){
+            FILE_NAME_INFORMATION *info;
+            DWORD size = sizeof(*info) + size_info.FileNameLength + sizeof(WCHAR);
+
+            info = HeapAlloc(GetProcessHeap(), 0, size);
+
+            br = GetFileInformationByHandleEx(h, FileNameInfo, info, size);
+            if(br){
+                info->FileName[info->FileNameLength / sizeof(WCHAR)] = 0;
+                lstrcpynW(pszPath + 2, info->FileName, cchPath - 2);
+            }
+
+            HeapFree(GetProcessHeap(), 0, info);
         }
+
         CloseHandle(h);
     }