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Douglas Bagnall b1173444ff examples:winexe: reproducible builds with zero timestamp 
Windows Portable Executable files have a timestamp field and a
checksum field. By default the timestamp field is updated to the
current time, which consequently changes the checksum. This makes the
build nondeterministic. It looks like this:

  --- a/tmp/winexe-1/winexesvc64_exe_binary.c
  +++ b/tmp/winexe-2/winexesvc64_exe_binary.c
  @@ -23,7 +23,7 @@ const DATA_BLOB *winexesvc64_exe_binary(void)
                0x6D, 0x6F, 0x64, 0x65, 0x2E, 0x0D, 0x0D, 0x0A,
                0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x50, 0x45, 0x00, 0x00, 0x64, 0x86, 0x0A, 0x00,
  -             0xB2, 0x16, 0x55, 0x66, 0x00, 0x00, 0x00, 0x00,
  +             0xD3, 0x3B, 0x55, 0x66, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0xF0, 0x00, 0x2E, 0x02,
                0x0B, 0x02, 0x02, 0x26, 0x00, 0x86, 0x00, 0x00,
                0x00, 0xBA, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00,
  @@ -33,7 +33,7 @@ const DATA_BLOB *winexesvc64_exe_binary(void)
                0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x05, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x40, 0x01, 0x00, 0x00, 0x04, 0x00, 0x00,
  -             0x73, 0xD7, 0x00, 0x00, 0x03, 0x00, 0x60, 0x01,
  +             0x94, 0xFC, 0x00, 0x00, 0x03, 0x00, 0x60, 0x01,
                0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,

https://learn.microsoft.com/en-us/windows/win32/debug/pe-format says
that a timestamp of zero can be used to represent a time that is not
"real or meaningful", so we do that.

As far as I can tell, the timestamp and checksum are only used in
DLLs, not directly executed .exe files.

Thanks to Freexian and the Debian LTS project for sponsoring this work.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13213

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit e604f75751)
2024-06-10 13:24:16 +00:00
..
README
winexe.c libsmb: Pass "flags" through cli_close_send() and pylibsmb 2023-10-10 08:19:29 +00:00
winexesvc.c examples: Fix code spelling 2023-03-28 09:33:31 +00:00
winexesvc.h
wscript examples:winexe: reproducible builds with zero timestamp 2024-06-10 13:24:16 +00:00
wscript_build examples:winexe: reproducible builds with zero timestamp 2024-06-10 13:24:16 +00:00

README 

winexe from https://sourceforge.net/projects/winexe/ is a project
based on Samba libraries from 2012. According to the winexe git
repository the last Samba commit winexe was updated to is 47bbf9886f0c
from November 6, 2012. As winexe uses unpublished Samba internal
libraries, it broke over time.

This is a port of the winexe functionality to more modern Samba
versions. It still uses internal APIs, but it being part of the tree
means that it is much easier to keep up to date.

The Windows service files were taken literally from the original
winexe from the sourceforge git. Andrzej Hajda chose GPLv3 only and
not GPLv3+. As GPL evolves very slowly, this should not be a practical
problem for quite some time.

To build it under Linux, you need mingw binaries on your build
system. Under Debian stretch, the package names are gcc-mingw-w64 and
friends.