The MSVCRT*.dll dependency has been removed by:
(1) using Win32 API equivalents where possible,
and (2) re-implementing some basic C runtime
functions. This prevents multiple MSVCRTs from
being loaded at runtime (if the application uses
a different version than the DLL). The new
WinDivert.dll only depends on KERNEL32.dll and
ADVAPI32.dll.
Furthermore, the MINGW build has been extended
to generate a WinDivert.lib import library file.
This means that the MINGW DLL can now be used
directly by Visual Studio (any version).
This allows projects that are strictly "GPLv2
only" to use WinDivert without licensing issues.
See the FSF's compatibility matrix here:
https://www.gnu.org/licenses/gpl-faq.en.html
This change does not affect existing projects
that can continue to use the LGPLv3 as before.
Also, bump the WinDivert version to 1.4.1.
1) Remove the dependency on the WdfCoInstaller*.dll file. This file appears
to be unnecessary for Windows 7 and up, and for patched Vista+2008.
2) Remove the WinDivert.inf file (only used by the co-installer).
3) 32/64-bit versions of the driver are now explicitly named, meaning that
the two can co-exist in the same directory.
4) The 32-bit WinDivert.dll can now automatically load the 64-bit driver on
64-bit Windows. This means it is possible to write 32-bit WinDivert
applications that automatically work on 64-bit windows.
5) WinDivert.dll now schedules the WinDivert service to be deleted right
away. This should fix some cases where the service is never deleted,
even during reboot.
6) Updated build scripts to reflect the changes.
* Re-brand "DIVERT" to "WINDIVERT" throughout the code-base.
* New flags:
> WINDIVERT_FLAG_PASSTHRU: Do not drop nor capture packets. Useful
for injection-only handles.
> WINDIVERT_FLAG_NO_CHECKSUM: Do not guarantee that diverted packets
have a correct checksum.
NOTE: Not yet tested!
* New default values and limits for various WinDivert parameters,
including WINDIVERT_PARAM_QUEUE_LEN, WINDIVERT_PARAM_QUEUE_TIME, and
the maximum filter length.
* New extended WinDivert functions that support asynchronous I/O:
> WinDivertRecvEx(..)
> WinDivertSendEx(..)
NOTE: Not yet tested!
* The WinDivert driver now services reads (receives) out-of-band.
The motivation is because WFP callouts are run at DISPATCH_LEVEL, so
we should not be doing expensive work in the ClassifyFn. This is also
the same reason why the filter length has been restricted.
Name and version:
* Now officially called 'WinDivert'
* Now officially working towards a version 1.0 release
New features:
* WinDivert now supports a packet-sniffing mode. This mode merely
copies packets, and does not drop the original.
* WinDivert now also supports a packet-dropping mode.
* WinDivert now supports filter priorities.
* WinDivert now supports a forwarded packet layer (WARNING: untested).
* WinDivert now supports get/set parameters such as packet queue length and
time.
* WinDivert now supports larger filters (but use at own risk).
* WinDivert now uninstalls the driver on program exit/library unload
* Different versions of WinDivert can co-exist on the same machine
(WARNING: untested, as there is currently only one version).
New License:
* WinDivert is now LGPL. This is less restrictive than the GPL so WinDivert
can be linked to by commercial software (under the terms of the LGPL
license).
Technical:
* Cleaner IOCTL interface.
* Cleaner driver implementation.
* Thread local events in WinDivert.dll
* Many minor tweaks and fixes.
basil00