tree e318b5982e1f296b9a5285166960cdbc63898c57
parent f88b827b861fcb29f73f6563f4cf1cf2c1750e82
author Jason A. Donenfeld <Jason@zx2c4.com> 1606431284 +0100
committer Jason A. Donenfeld <Jason@zx2c4.com> 1606433958 +0000

windows: add DLL directory search path manipulation functions

A whole class of DLL hijacking attacks can be avoided with a dance like:

    SetDllDirectory("")
    SetDefaultDllDirectories(LOAD_LIBRARY_SEARCH_SYSTEM32)

For applications who want to opt into this better secure posture, this
commit adds the function definitions to do so.

Reference:
https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-setdlldirectorya
https://docs.microsoft.com/en-us/windows/win32/api/libloaderapi/nf-libloaderapi-setdefaultdlldirectories

Change-Id: I9b6d4e414a80a689b31b9b43a2d5c72de4813c39
Reviewed-on: https://go-review.googlesource.com/c/sys/+/273606
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>