After this patch, the codebase no longer overrides system printf
functions. Instead it explicitly calls either the curl printf functions
`curl_m*printf()` or the system ones using their original names.
Also:
- drop unused `curl_printf.h` includes.
- checksrc: ban system printf functions, allow where necessary.
Follow-up to db98daab05#18844
Follow-up to 4deea9396b#18814Closes#18866
- schannel: apply BoringSSL workaround to AWS-LC too.
Affects Schannel + AWS-LC MultiSSL builds. (not tested in CI)
Ref: 274940d743#2643#2634
- curl_ntlm_core: deduplicate macro defines.
- curl_ntlm_core: document version thresholds for an AWS-LC-specific
workaround.
It was necessary between v1.2.0 2022-09-01 and v1.30.1 2024-06-21.
No longer necessary since v1.31.0 2024-07-01:
ba94617d99
Follow-up to 34ef4fab22#10320
- lib758: drop redundant OpenSSL version guards.
`OPENSSL_VERSION_NUMBER > 3` automatically guards against LibreSSL,
BoringSSL and AWS-LC.
Ref: 6ddd8f2c0b
Follow-up to a5f0ab7995#18288
- dllmain, curl_sha512_256: formatting.
Closes#18387
- Call OPENSSL_thread_stop on thread termination (DLL_THREAD_DETACH)
to prevent a memory leak in case OpenSSL is linked statically.
- Warn in libcurl-thread.3 that if OpenSSL is linked statically then it
may require thread cleanup.
OpenSSL may need per-thread cleanup to stop a memory leak. For Windows
and Cygwin if libcurl was built as a DLL then we can do that for the
user by calling OPENSSL_thread_stop on thread termination. However, if
libcurl was built statically then we do not have notification of thread
termination and cannot do that for the user.
Also, there are several other unusual cases where it may be necessary
for the user to call OPENSSL_thread_stop, so in the libcurl-thread
warning I added a link to the OpenSSL documentation.
Co-authored-by: Viktor Szakats
Reported-by: southernedge@users.noreply.github.com
Reported-by: zmcx16@users.noreply.github.com
Ref: https://www.openssl.org/docs/man3.0/man3/OPENSSL_thread_stop.html#NOTES
Fixes https://github.com/curl/curl/issues/12327
Closes https://github.com/curl/curl/pull/12408
