src: guard for double declaration of `curl_ca_embed` in unity builds

Seen with curl-for-win linux-musl-from-mac build with gcc 9.2.0.

```
n file included from /Users/runner/work

src: guard for double declaration of `curl_ca_embed` in unity builds

Seen with curl-for-win linux-musl-from-mac build with gcc 9.2.0.

```
n file included from /Users/runner/work/curl-for-win/curl-for-win/curl/_x64-linux-musl-bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:136:
/Users/runner/work/curl-for-win/curl-for-win/curl/_x64-linux-musl-bld/src/tool_ca_embed.c:4:28: warning: redundant redeclaration of 'curl_ca_embed' [-Wredundant-decls]
4 | extern const unsigned char curl_ca_embed[];
| ^~~~~~~~~~~~~
In file included from /Users/runner/work/curl-for-win/curl-for-win/curl/_x64-linux-musl-bld/src/CMakeFiles/curl.dir/Unity/unity_0_c.c:88:
/Users/runner/work/curl-for-win/curl-for-win/curl/src/tool_operate.c:107:28: note: previous declaration of 'curl_ca_embed' was here
107 | extern const unsigned char curl_ca_embed[];
| ^~~~~~~~~~~~~
```
https://github.com/curl/curl-for-win/actions/runs/11192203640/job/31116070669#step:3:4894

Follow-up to 8a3740bc8e558b9a9d4a652b74cf27a0961d7010 #14059
Closes #15307

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libssh: use CURL_PATH_MAX instead of PATH_MAX

Follow-up to facf59c30e9a6a10c4

Reported-by: Viktor Szakats
Bug: https://github.com/curl/curl/pull/15285#issuecomment-2416947731

libssh: use CURL_PATH_MAX instead of PATH_MAX

Follow-up to facf59c30e9a6a10c4

Reported-by: Viktor Szakats
Bug: https://github.com/curl/curl/pull/15285#issuecomment-2416947731
Closes #15309

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vquic: fix compiler warning with gcc + MUSL

```
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c: In function 'msghdr_get_udp_gro':
/Users/runner/work/curl-for-win

vquic: fix compiler warning with gcc + MUSL

```
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c: In function 'msghdr_get_udp_gro':
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c:344: warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
344 | #pragma clang diagnostic push
|
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c:345: warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
345 | #pragma clang diagnostic ignored "-Wsign-compare"
|
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c:346: warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
346 | #pragma clang diagnostic ignored "-Wcast-align"
|
/Users/runner/work/curl-for-win/curl-for-win/curl/lib/vquic/vquic.c:350: warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas]
350 | #pragma clang diagnostic pop
|
```
https://github.com/curl/curl-for-win/actions/runs/11356281008/job/31587180874#step:3:9534

Follow-up to a571afc02e11c1ab9a9f59c2150e11acca423fcc #14012
Closes #15303

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libssh2: use the filename buffer when getting the homedir

Avoids having to use a big stack buffer for this.

Closes #15285

libssh2: put the readdir buffers into struct

... instead of separate malloc() calls:

- removes two mallocs (and associated error handling paths)
- makes cleanup easier

libssh2: put the readdir buffers into struct

... instead of separate malloc() calls:

- removes two mallocs (and associated error handling paths)
- makes cleanup easier

Also reduce maximum SFTP file path lengths to 1024 bytes universally
everywhere. Using the system's own MAX_PATH did not make sense since
this is mostly about getting a remote file name.

Closes #15285

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CI: update GHA dependencies

- update Mbed-TLS/mbedtls to v3.6.2
- update libressl-portable/portable to v4
- update github/codeql-action digest to f779452

Closes #15301
C

CI: update GHA dependencies

- update Mbed-TLS/mbedtls to v3.6.2
- update libressl-portable/portable to v4
- update github/codeql-action digest to f779452

Closes #15301
Closes #15299
Closes #15188

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GHA: silence proselint warnings and an error

Fix new issues found by `proselint`.

Also:
- silence this technical warning:
```
:0: DeprecationWarning: /home/runner/.p

GHA: silence proselint warnings and an error

Fix new issues found by `proselint`.

Also:
- silence this technical warning:
```
:0: DeprecationWarning: /home/runner/.proselintrc was found instead of a JSON file. Rename to /home/runner/.proselintrc.json.
```
- fix an input filename.
`proselints` fails now if an input file is missing.

Reported-by: Jay Satiro
Bug: https://github.com/curl/curl/pull/15291#issuecomment-2410505100
Closes #15293

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tests: fix callback signatures to please UndefinedBehaviorSanitizer

Make test applications use the correct prototypes for callbacks.

Closes #15289

curl.h: remove the struct pointer for CURL/CURLSH/CURLM typedefs

It makes the callbacks get different signnatures when used from within
libcurl vs outside of it by libcurl-using applicat

curl.h: remove the struct pointer for CURL/CURLSH/CURLM typedefs

It makes the callbacks get different signnatures when used from within
libcurl vs outside of it by libcurl-using applications (such as the
libtests) and this triggers UndefinedBehaviorSanitizer errors.

Closes #15289

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lib: remove function pointer typecasts for hmac/sha256/md5

Make sure we use functions with the correct prototype.

Closes #15289

conncache: More efficient implementation of cpool_remove_bundle

Closes #15292

GHA/linux: add cmake job for system mbedTLS with pkg-config

Add a build-only cmake job with system mbedTLS package and `pkg-config`
enabled. Ubuntu 24.04 comes with mbedTLS 2.28.8 which

GHA/linux: add cmake job for system mbedTLS with pkg-config

Add a build-only cmake job with system mbedTLS package and `pkg-config`
enabled. Ubuntu 24.04 comes with mbedTLS 2.28.8 which supports
`pkg-config`.

Follow-up to 7bab201abe3915a0167c002f9308950cb8a06e4b #15193
Closes #15286

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server/mqttd: fix two memory leaks

Closes #15290

GHA/linux: fixup pip for Ubuntu 24.04

`ubuntu-latest` became `ubuntu-24.04` today.

Closes #15287

tool_operate: make --skip-existing work for --parallel

Reported-by: Tobias Wendorff
Fixes #15261
Closes #15283

url: use same credentials on redirect

Previously it could lose the username and only use the password.

Added test 998 and 999 to verify.

Reported-by: Tobias Bora
Fixes

url: use same credentials on redirect

Previously it could lose the username and only use the password.

Added test 998 and 999 to verify.

Reported-by: Tobias Bora
Fixes #15262
Closes #15282

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lib: move curl_path.[ch] into vssh/

As this contains code only used by SSH backends.

Closes #15284

ftp: move listen handling to socket filter

Move the listen/accept handling of the FTP active data connection
into the socket filter and monitor 'connected' status of that as
with pas

ftp: move listen handling to socket filter

Move the listen/accept handling of the FTP active data connection
into the socket filter and monitor 'connected' status of that as
with passive connections - more or less.

The advantage is that the socket filter now reports being connected
only when the server has actually called and accept() has been done.
This enables to bootstrap the filter chain on the data connection
just like any other. A require SSL filter can then be added right
at the start and does not need to be patched in later.

Still, the active connection keeps on needing special handling in
ftp.c as the control connection needs to be monitored while waiting
as the server might send error responses this way. So, things did
not turn out quite as squeaky clean as hoped for, but still seems
better to do that way.

Closes #14798

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mbedTLS: fix handling of TLSv1.3 sessions

For TLSv1.3, if supported, observer special return code to retrieve
newly arrived session from mbedTLS.

Adjust test expectations now th

mbedTLS: fix handling of TLSv1.3 sessions

For TLSv1.3, if supported, observer special return code to retrieve
newly arrived session from mbedTLS.

Adjust test expectations now that TLSv1.3 session resumption works in
mbedTLS >= 3.6.0.

Based on #14135 by @ad-chaos
Closes #15245

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wolfSSL: fix handling of TLSv1.3 sessions

Register a callback to get notified of new SSL sessions by wolfSSL.
Remove the explicit session retrieval after handshake, since this does
n

wolfSSL: fix handling of TLSv1.3 sessions

Register a callback to get notified of new SSL sessions by wolfSSL.
Remove the explicit session retrieval after handshake, since this does
not work for TLSv1.3.

Adjust test expectations now that TLSv1.3 session resumption works
in wolfSSL.

Closes #15243

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curl-rustls.m4: set linker flags to allow rustls build on macos

Assisted-by: Viktor Szakats
Closes #15175

smb: do not redefine `getpid` on Windows

Replace with namespaced local macro `Curl_getpid()`.

Redefining symbols can backfire if that symbol is used in system
headers, especiall

smb: do not redefine `getpid` on Windows

Replace with namespaced local macro `Curl_getpid()`.

Redefining symbols can backfire if that symbol is used in system
headers, especially with unity build. We haven't seen a fallout in CI
or supported envs, but do it anyway for good measure.

Bug report: https://datagirl.xyz/posts/wolfssl_curl_w2k.html
Closes #15263

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GHA: optimize test prereq steps

- Linux: move test and pytest prereqs right before test run.
- returns build phase results faster.
- allows skipping steps for jobs that don't nee

GHA: optimize test prereq steps

- Linux: move test and pytest prereqs right before test run.
- returns build phase results faster.
- allows skipping steps for jobs that don't need them.
- makes dependencies more transparent.
- sync prereq install step names.
- use `tests/requirements.txt` more.

Closes #15275

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pytest: include `buildinfo.txt` in the output

If present.

It aims to provide TextClutch the same build information that
`runtests.pl` already is providing.

Ref: https:/

pytest: include `buildinfo.txt` in the output

If present.

It aims to provide TextClutch the same build information that
`runtests.pl` already is providing.

Ref: https://testclutch.curl.se/static/reports/feature-matrix.html
Ref: #15256
Follow-up to 1fdea1684602a1ae2870c67b5f3e8fd34f63da95 #14802
Closes #15279

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GHA/windows: drop vcpkg workaround

Reverts 841f42150ae7b9f903cc5d266cec60a8090c0f27 #15133
Closes #15217