- For the threaded resolver backend on Windows, revert back to
exclusively use the threaded resolver with libcurl-owned threading
instead of GetAddrInfoExW with Windows-owned threading.
Winsock (the Windows sockets library) has a bug where it does not wait
for all of the name resolver threads it is managing to terminate before
returning from WSACleanup. The threads continue to run and may cause a
crash.
This commit is effectively a revert of several commits that encompass
all GetAddrInfoExW code in libcurl. A manual review of merge conflicts
was used to resolve minor changes that had modified the code for
aesthetic or build reasons in other commits.
Prior to this change if libcurl was built with the threaded resolver
backend for Windows, and Windows 8 or later was the operating system at
runtime, and the caller was not impersonating another user, then libcurl
would use GetAddrInfoExW to handle asynchronous name lookups.
GetAddrInfoExW support was added in a6bbc87f, which preceded 8.6.0, and
prior to that the threaded resolver backend used libcurl-owned threading
exclusively on Windows.
Reported-by: Ionuț-Francisc Oancea
Reported-by: Razvan Pricope
Ref: https://developercommunity.visualstudio.com/t/ASAN:-heap-use-after-free-in-NdrFullPoin/10654169
Fixes https://github.com/curl/curl/issues/13509#issuecomment-2225338110
Closes https://github.com/curl/curl/pull/14794
---
Revert "asyn-thread: avoid using GetAddrInfoExW with impersonation"
This reverts commit 0caadc1f24.
Conflicts:
lib/system_win32.c
--
Revert "asyn-thread: fix curl_global_cleanup crash in Windows"
This reverts commit 428579f5d1.
--
Revert "system_win32: fix a function pointer assignment warning"
This reverts commit 26f002e02e.
--
Revert "asyn-thread: use GetAddrInfoExW on >= Windows 8"
This reverts commit a6bbc87f9e.
Conflicts:
lib/asyn-thread.c
lib/system_win32.c
--
Multiple reports suggest that GetAddrInfoExW fails when impersonation is
used. This PR checks if thread is impersonating and avoids using
GetAddrInfoExW api.
Reported-by: Keerthi Timmaraju
Assisted-by: edmcln on github
Fixes#13612Closes#13738
- Use CURLX_FUNCTION_CAST to suppress a function pointer assignment
warning.
a6bbc87f added lookups of some Windows API functions and then cast them
like `*(FARPROC*)&Curl_funcname = address`. Some versions of gcc warn
about that as breaking strict-aliasing rules so this PR changes those
assignments to use CURLX_FUNCTION_CAST.
Bug: https://github.com/curl/curl/pull/12581#issuecomment-1869804317
Reported-by: Marcel Raad
Closes https://github.com/curl/curl/pull/12602
Windows compilers define `_WIN32` automatically. Windows SDK headers
or build env defines `WIN32`, or we have to take care of it. The
agreement seems to be that `_WIN32` is the preferred practice here.
Make the source code rely on that to detect we're building for Windows.
Public `curl.h` was using `WIN32`, `__WIN32__` and `CURL_WIN32` for
Windows detection, next to the official `_WIN32`. After this patch it
only uses `_WIN32` for this. Also, make it stop defining `CURL_WIN32`.
There is a slight chance these break compatibility with Windows
compilers that fail to define `_WIN32`. I'm not aware of any obsolete
or modern compiler affected, but in case there is one, one possible
solution is to define this macro manually.
grepping for `WIN32` remains useful to discover Windows-specific code.
Also:
- extend `checksrc` to ensure we're not using `WIN32` anymore.
- apply minor formatting here and there.
- delete unnecessary checks for `!MSDOS` when `_WIN32` is present.
Co-authored-by: Jay Satiro
Reviewed-by: Daniel Stenberg
Closes#12376
- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING
checksrc is updated to allow non-year using copyright statements
Closes#10205
Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the file
`.reuse/dep5`.
This commit also adds a Github workflow to check pull requests and adapts
copyright.pl to the changes.
Closes#8869
This fixes the static dependency on iphlpapi.lib and allows curl to
build for targets prior to Windows Vista.
This partially reverts 170bd047.
Fixes#3960Closes#3958
