Piotr Caban : dbghelp: Support 32 and 64-bit binaries in ImageDirectoryEntryToDataEx.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ab4c64a4093b98ca7a74ec29a9d947333791b26d
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ab4c64a4093b98ca7a74ec29a...

Author: Piotr Caban 
Date:   Tue Feb 18 17:01:59 2020 +0100

dbghelp: Support 32 and 64-bit binaries in ImageDirectoryEntryToDataEx.

Signed-off-by: Piotr Caban 
Signed-off-by: Alexandre Julliard

---

dlls/dbghelp/pe_module.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/dlls/dbghelp/pe_module.c b/dlls/dbghelp/pe_module.c
index 4b7c7baaae..b046b987bd 100644
--- a/dlls/dbghelp/pe_module.c
+++ b/dlls/dbghelp/pe_module.c
@@ -853,11 +853,25 @@ PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir,
     if (section) *section = NULL;

if (!(nt = RtlImageNtHeader( base ))) return NULL;
-    if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
-    if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
+    if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)
+    {
+        const IMAGE_NT_HEADERS64 *nt64 = (const IMAGE_NT_HEADERS64 *)nt;

-    *size = nt->OptionalHeader.DataDirectory[dir].Size;
-    if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
+        if (dir >= nt64->OptionalHeader.NumberOfRvaAndSizes) return NULL;
+        if (!(addr = nt64->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
+        *size = nt64->OptionalHeader.DataDirectory[dir].Size;
+        if (image || addr < nt64->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
+    }
+    else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)
+    {
+        const IMAGE_NT_HEADERS32 *nt32 = (const IMAGE_NT_HEADERS32 *)nt;
+
+        if (dir >= nt32->OptionalHeader.NumberOfRvaAndSizes) return NULL;
+        if (!(addr = nt32->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
+        *size = nt32->OptionalHeader.DataDirectory[dir].Size;
+        if (image || addr < nt32->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
+    }
+    else return NULL;

return RtlImageRvaToVa( nt, base, addr, section );
 }