Commit graph

246 commits

Author SHA1 Message Date
x2018
dd71f61ea2
lib: cleanup for some typos about spaces and code style
Closes #19370
2025-11-05 14:07:28 +01:00
Stefan Eissing
c82a70628d ssl-session-cache: check use on config and availability
Replace the check if a ssl session cache is configured with
a function checking if it is configured *and* if an ssl session
cache is available.

During normal operations, a session cache is always there, however
for "connect-only" transfers this might not be the case. When such
transfers receive new sessions/tickets, they need to silently
discard those and not fail.

Reported-by: Marc Aldorasi

Fixes https://github.com/curl/curl/issues/18983
Closes https://github.com/curl/curl/pull/19251
2025-10-29 03:07:59 -04:00
Viktor Szakats
207a74206b
mbedtls: fix building with sha-256 missing from PSA
Fixing:
```
lib/vtls/mbedtls.c:1505:10: error: call to undeclared function 'Curl_sha256it'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
 1505 |   return Curl_sha256it(sha256sum, input, inputlen);
      |          ^
1 error generated.
```

with mbedTLS configuration:
```
tf-psa-crypto/scripts/config.py unset PSA_WANT_ALG_SHA_256
tf-psa-crypto/scripts/config.py unset PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS
tf-psa-crypto/scripts/config.py unset MBEDTLS_LMS_C
```

Follow-up to 3a305831d1 #19077

Closes #19223
2025-10-24 19:14:28 +02:00
Viktor Szakats
4a6fbd5e1d
NTLM: disable if DES support missing from OpenSSL or mbedTLS
Make autotools and cmake detect DES support in OpenSSL and mbedTLS.
Forward feature macros to C and omit NTLM from the feature preview list.
Use the feature macros in source. This ensure that `-V` output matches
the preview.

OpenSSL doesn't support DES when built with `no-des` or `no-deprecated`.
mbedTLS 4.x no longer supports it, and it's possible to disable it in
<4 with `scripts/config.py unset MBEDTLS_DES_C`.

Before this patch this worked for
mbedTLS 4 only, and with a regression for pending PR #16973.

Also:

- drop NTLM feature check from `curl_setup.h` in favour of autotools/
  cmake feature macros. This makes `curl_setup.h` no longer need
  to include an mbedTLS header, which in turn makes tests/server build
  without depending on mbedTLS.
  Fixing, in #16973:
  ```
  In file included from tests/server/first.h:40,
                   from bld/tests/server/servers.c:3:
  lib/curl_setup.h:741:10: fatal error: mbedtls/version.h: No such file or directory
    741 | #include <mbedtls/version.h>
        |          ^~~~~~~~~~~~~~~~~~~
  ```
  Ref: https://github.com/curl/curl/actions/runs/18689537893/job/53291322012?pr=16973
  Ref: #19181 (initial fix idea)
  Follow-up to 3a305831d1 #19077

- move back mbedTLS header include and version check from
  `curl_setup.h` to each source which consumes mbedTLS.

- GHA/http3-linux: drop workaround that disabled NTLM for
  `no-deprecated` OpenSSL builds.
  Follow-up to 006977859d #12384

- curl_ntlm_core: drop pointless macro `CURL_NTLM_NOT_SUPPORTED`.
  Follow-up to 006977859d #12384

Closes #19206
2025-10-24 12:12:20 +02:00
Viktor Szakats
1de4a9a5fb
mbedtls: fix building with <3.6.1
```
lib/vtls/mbedtls.c:786:3: error: call to undeclared function 'mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  786 |   mbedtls_ssl_conf_tls13_enable_signal_new_session_tickets(&backend->config,
      |   ^
lib/vtls/mbedtls.c:787:5: error: use of undeclared identifier 'MBEDTLS_SSL_TLS1_3_SIGNAL_NEW_SESSION_TICKETS_ENABLED'; did you mean 'MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET_FLUSH'?
  787 |     MBEDTLS_SSL_TLS1_3_SIGNAL_NEW_SESSION_TICKETS_ENABLED);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |     MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET_FLUSH
dep/mbedtls-3.4.0/_pkg/include/mbedtls/ssl.h:700:5: note: 'MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET_FLUSH' declared here
  700 |     MBEDTLS_SSL_TLS1_3_NEW_SESSION_TICKET_FLUSH,
      |     ^
2 errors generated.
```

Regression from d63e40f8e6 #18271 (8.16.0)

Closes #19208
2025-10-24 12:12:20 +02:00
Daniel Stenberg
e29706d6e2
mbedtls: move the crypto init into the vtls init function
Follow-up to 3a305831d1

Closes #19108
2025-10-17 23:33:12 +02:00
Viktor Szakats
3a305831d1
mbedtls: add support for 4.0.0
After this patch libcurl requires (as already documented)
the `curl_global_init()` call when using the `curl_formadd()` API with
mbedTLS.

Note: NTLM is not supported with mbedTLS 4+, because it lacks
the necessary crypto primitive: DES.

Also:
- lib: de-dupe mbedTLS minimum version checks into `curl_setup.h`.
- lib: initialize PSA Crypto as part of `curl_global_init()`.
  For MD5, SHA-256, `curl_formadd()`, and MultiSSL builds with mbedTLS
  but where mbedTLS isn't the default backend.
- lib1308: fix to call `curl_global_init()` (for the Form API).
- curl_ntlm_core: disable with mbedTLS 4+.
- md4: disable mbedTLS implementation when building against 4.x.
- md5: use mbedTLS PSA Crypto API when available, otherwise use
  the default local implementation.
- sha256: use mbedTLS PSA Crypto API when available, otherwise use
  the default local implementation.
- vtls/mbedtls: drop PSA Crypto initialization in favor of
  `curl_global_init()`.
- vtls/mbedtls: use PSA Crypto random API with all mbedTLS versions.
- vtls/mbedtls: do the same for the SHA-256 callback.
- autotools: detect mbedTLS 4+, and disable NTLM for 3.x.
- cmake: disable NTLM for mbedTLS 3.x.
- GHA/linux: keep building mbedTLS 3.x manually and use it in
  an existing job, while also enabling pytest in it.
- GHA/linux: bump to mbedTLS 4.0.0.
  Closes #19075
  Closes #19074

Refs:
https://github.com/Mbed-TLS/mbedtls/releases/tag/mbedtls-4.0.0
https://github.com/Mbed-TLS/mbedtls/blob/mbedtls-4.0.0/docs/4.0-migration-guide.md
https://github.com/Mbed-TLS/mbedtls/blob/mbedtls-4.0.0/tf-psa-crypto/docs/1.0-migration-guide.md [404]
https://github.com/Mbed-TLS/TF-PSA-Crypto/blob/tf-psa-crypto-1.0.0/docs/1.0-migration-guide.md
https://github.com/Mbed-TLS/TF-PSA-Crypto/blob/tf-psa-crypto-1.0.0/docs/psa-transition.md
627f727bbe/docs/4.0-migration-guide

Closes #19077
2025-10-17 11:50:48 +02:00
Viktor Szakats
b12da22db1
lib: stop overriding system printf symbols
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 #18814

Closes #18866
2025-10-06 20:57:59 +02:00
Stefan Eissing
e02cbe94ff
mbedtls: check result of setting ALPN
The result of setting the negotiated ALPN was not checked, leading
to reporting success when it should not have.

Reported in Joshua's sarif data

Closes #18727
2025-09-25 14:13:09 +02:00
Daniel Stenberg
0f1657ca75
mbedtls: handle WANT_WRITE from mbedtls_ssl_read()
The mbedtls_ssl_read() function is documented to be able to also return
MBEDTLS_ERR_SSL_WANT_WRITE, so act on that accordingly instead of
returning error for it.

Assisted-by: Stefan Eissing

Reported in Joshua's sarif data
Closes #18682
2025-09-25 09:07:09 +02:00
Viktor Szakats
92f215fea1
build: address some -Weverything warnings, update picky warnings
`-Weverything` is not enabled by curl, and not recommended by LLVM,
because it may enable experimental options, and will result in new
fallouts after toolchain upgrades. This patch aims to fix/silence as much
as possible as found with llvm/clang 21.1.0. It also permanently enables
warnings that were fixed in source and deemed manageable in the future.
`-Wformat` warnings are addressed separately via #18343.

Fix/silence warnings in the source:
- typecheck-gcc.h: fix `-Wreserved-identifier`.
- lib: silence `-Wcast-function-type-strict`.
  For llvm 16+ or Apple clang 16+.
- asyn-ares: limit `HAPPY_EYEBALLS_DNS_TIMEOUT` to old c-ares versions.
- curl_trc: fix `-Wc++-hidden-decl`.
- doh: fix `-Wc++-keyword`.
- ftp: fix `-Wreserved-identifier`.
- ldap: fix `-Wreserved-identifier`.
- mqtt: comment unused macro to avoid warning.
- multi_ev: drop unused macros to avoid warnings.
- setopt: fix useless `break;` after `return;`.
- gtls, mbedtls, rustls: silence `-Wconditional-uninitialized`.
- socks_sspi, schannel, x509asn1: fix `-Wimplicit-int-enum-cast`.
- x509asn1: fix `-Wc++-keyword`.
- openssl: scope `OSSL_UI_METHOD_CAST` to avoid unused macro warning.
- libssh2, wolfssl: drop unused macros.
- curl_ngtcp2, curl_quiche, httpsrr, urlapi: drop/limit unused macros.
- tool_getparam: fix useless `break;` after `return;` or `break;`.
  Not normally enabled because it doesn't work with unity.
  https://github.com/llvm/llvm-project/issues/71046
- tool_operate: fix `-Wc++-keyword`.
- curlinfo: fix a `-Wunsafe-buffer-usage`.
- tests: silence `-Wformat-non-iso`.
- lib557: fix `-Wreserved-identifier`.
- lib1565: silence `-Wconditional-uninitialized`.

Enable the above clang warnings permanently in picky mode:
- `-Wc++-hidden-decl`
- `-Wc++-keyword` (except for Windows, where it collides with `wchar_t`)
- `-Wcast-function-type-strict`
- `-Wcast-function-type`
- `-Wconditional-uninitialized`
- `-Wformat-non-iso` (except for clang-cl)
- `-Wreserved-identifier`
- `-Wtentative-definition-compat`

Silence problematic `-Weverything` warnings globally (in picky mode):
- `-Wused-but-marked-unused` (88000+ hits) and
  `-Wdisabled-macro-expansion` (2600+ hits).
  Triggered by `typecheck-gcc.h` when building with clang 14+.
  Maybe there exists a way to fix within that header?
  Ref: https://discourse.llvm.org/t/removing-wused-but-marked-unused/55310
- `-Wunsafe-buffer-usage`. clang 16+. 7000+ hits.
  May be useful in theory, but such high volume of hits makes it
  impractical to review and possibly address. Meant for C++.
  Ref: https://clang.llvm.org/docs/SafeBuffers.html
  Ref: https://stackoverflow.com/questions/77017567/how-to-fix-code-to-avoid-warning-wunsafe-buffer-usage
  Ref: https://discourse.llvm.org/t/rfc-c-buffer-hardening/65734
  Ref: https://github.com/llvm/llvm-project/pull/111624
- `-Wimplicit-void-ptr-cast`. clang 21+. 1700+ hits.
  C++ warning, deemed pure noise.
  Ref: https://github.com/curl/curl/issues/18470#issuecomment-3253506266
- `-Wswitch-default` (180+ hits), `-Wswitch-enum` (190+ hits),
  `-Wcovered-switch-default` (20+ hits).
  Next to impossible to fix cleanly, esp. when the covered `case`
  branches depend on compile-time options.
- `-Wdocumentation-unknown-command` (8+ hits).
  Triggered in a few sources. Seems arbitrary and bogus.
- `-Wpadded` (550+ hits).
- `-Wc++-keyword` on Windows, where it collides with `wchar_t`.
  (100+ hits)
  Ref: https://github.com/llvm/llvm-project/issues/155988
- `-Wreserved-macro-identifier`. clang 13+. 5+ hits.
  Sometimes it's necessary to set external macros that use
  the reserved namespace. E.g. `_CRT_NONSTDC_NO_DEPRECATE`,
  `__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__`, `__NO_NET_API`,
  possibly `_REENTRANT`, and more.
  It's not worth trying to silence them individually.
- `-Wnonportable-system-include-path` with `clang-cl`.
  It'd be broken by doing what the warning suggests.
- `-Wformat-non-iso` for clang-cl.

CMake `PICKY_COMPILER=ON` (the default) or `./configure`
`--enable-warnings` (not the default) is required to enable these
silencing rules.

Also:
- autotools, cmake: fix Apple clang and mainline llvm version translations.
  Ref: https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
- autotools, cmake: enable `-Warray-compare` for clang 20+.
  Follow-up to 4b7accda5a #17196
- cmake: fix to enable `-Wmissing-variable-declarations` at an earlier
  clang version.
- cmake: update internal logic to handle warning options with `+` in
  them.
- cmake: fix internal logic to match the whole option when looking
  into `CMAKE_C_FLAGS` for custom-disabled warnings.

Follow-up to b85cb8cb4e #18485

Closes #18477
2025-09-20 10:16:15 +02:00
Viktor Szakats
0b0f3d937c
lib: drop UNUSED_PARAM macro
Added in 2011, but has seen little use in the code. The necessary
compiler feature is missing in some compilers (e.g. MSVC), thus in most
places the portable `(void)` cast is used in addition.

Also:
- vtls/rustls: silence unused argument warning with `(void)`.
  Necessary for MSVC, for example.

Ref: ee4ed46128

Closes #18455
2025-09-03 16:33:05 +02:00
Viktor Szakats
3298a43133
spelling: file system
Closes #18348
2025-08-22 15:53:41 +02:00
Viktor Szakats
d63e40f8e6
mbedtls: check for feature macros instead of version
Drop three interim macros and mbedTLS version checks in favor of feature
macros defined by mbedTLS itself.

These mbedTLS features require mbedTLS 3.6.0/3.6.1 for production.
Earlier versions may have partial/experimental support for them,
disabled by default and (AFAICS) without documented build options
to enable them.

One feature guard already used the native macro instead of the interim
one before this patch. (`MBEDTLS_SSL_SESSION_TICKETS`)

Ref: https://github.com/curl/curl/pull/18254#issuecomment-3182668817

Closes #18271
2025-08-14 12:25:14 +02:00
Viktor Szakats
01a2308236
mbedtls: bump minimum version required to 3.2.0
3.2.0 was released on July 11, 2022.

Ref: #18161
Closes #18254
2025-08-13 09:09:45 +02:00
Viktor Szakats
89771d19d5
tidy-up: prefer ifdef/ifndef for single checks
Closes #18018
2025-07-27 22:35:17 +02:00
Viktor Szakats
4d977fe552
tidy-up: more whitespace/indent, comments
Also a couple of minor formatting updates in the root `CMakeLists.txt`.
One swap to `#ifdef`.

Closes #17929
2025-07-25 11:47:51 +02:00
Viktor Szakats
a3787f98ac
lib: drop two interim macros in favor of native libcurl API calls
Drop `strcasecompare` and `strncasecompare` in favor of libcurl API
calls `curl_strequal` and `curl_strnequal` respectively.

Also drop unnecessary `strcase.h` includes. Include `curl/curl.h`
instead where it wasn't included before.

Closes #17772
2025-06-30 18:38:56 +02:00
Stefan Eissing
b7c676d13f
vtls: change send/recv signatures of tls backends
Similar to connection filter changes, return a CURLcode and the
read/written amount as size_t *.

Closes #17593
2025-06-21 10:34:02 +02:00
Daniel McCarney
1e2e808def
tls: remove Curl_ssl false_start
The secure transport vTLS backend was the only Curl_ssl struct instance
that populated the false_start field. Since its removed, we can now
remove that field entirely. This was a protocol feature specific to TLS
1.2 that has been replaced by the more widely adopted TLS 1.3 early data
mechanisms.

--false-start is now deprecated

Closes #17595
2025-06-12 08:29:15 +02:00
Stefan Eissing
20c90ba298
lib: unify recv/send function signatures
cfilter/conn: change send/recv function signatures. Unify the
calling/return conventions in our send/receive handling.

Curl_conn_recv(), adjust pnread type

Parameter `pnread` was a `ssize_t *`, but `size_t *` is better since the
function returns any error in its `CURLcode` return value.

Closes #17546
2025-06-11 11:21:10 +02:00
Daniel Stenberg
d4dd43b20d
curlx: move curlx_inet_pton
Used by test server code.

Closes #17300
2025-05-09 13:45:24 +02:00
Daniel Stenberg
437c72fbba
mbedtls: TLS 1.3 is max when mbedtls has 1.3 support
Co-authored-by: Viktor Szakats
Reported-by: kkalganov on github
Fixes #17048
Closes #17137
2025-04-24 14:02:56 +02:00
Daniel Stenberg
625f2c1644
lib: include files using known path
by including headers using "../[header]" when done from C files in
subdirectories, we do not need to specify the lib source dir as an
include path and we reduce the risk of header name collisions with
headers in the SDK using the same file names.

Idea-by: Kai Pastor

Ref: #16949
Closes #16991
2025-04-08 17:00:00 +02:00
Viktor Szakats
cbbccb8b3a
mbedtls: re-enable an error check
While adding support for key blobs, a check and error code update moved
after some logic, resulting in the updated code not checked anymore.

Detected by clang-tidy:
```
lib/vtls/mbedtls.c:768:7: error: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores,-warnings-as-errors]
  768 |       ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
      |       ^
```
Ref: https://github.com/curl/curl/actions/runs/13953249156/job/39057979349?pr=16764#step:12:178

Regression from 05e0453050 #7157
Cherry-picked from #16764
Closes #16766
2025-03-24 10:15:02 +01:00
Viktor Szakats
f4e23950c7
build: enable -Wcast-qual, fix or silence compiler warnings
The issues found fell into these categories, with the applied fixes:

- const was accidentally stripped.
  Adjust code to not cast or cast with const.

- const/volatile missing from arguments, local variables.
  Constify arguments or variables, adjust/delete casts. Small code
  changes in a few places.

- const must be stripped because an API dependency requires it.
  Strip `const` with `CURL_UNCONST()` macro to silence the warning out
  of our control. These happen at API boundaries. Sometimes they depend
  on dependency version, which this patch handles as necessary. Also
  enable const support for the zlib API, using `ZLIB_CONST`. Supported
  by zlib 1.2.5.2 and newer.

- const must be stripped because a curl API requires it.
  Strip `const` with `CURL_UNCONST()` macro to silence the warning out
  of our immediate control. For example we promise to send a non-const
  argument to a callback, though the data is const internally.

- other cases where we may avoid const stripping by code changes.
  Also silenced with `CURL_UNCONST()`.

- there are 3 places where `CURL_UNCONST()` is cast again to const.
  To silence this type of warning:
  ```
  lib/vquic/curl_osslq.c:1015:29: error: to be safe all intermediate
    pointers in cast from 'unsigned char **' to 'const unsigned char **'
    must be 'const' qualified [-Werror=cast-qual]
  lib/cf-socket.c:734:32: error: to be safe all intermediate pointers in
    cast from 'char **' to 'const char **' must be 'const' qualified
    [-Werror=cast-qual]
  ```
  There may be a better solution, but I couldn't find it.

These cases are handled in separate subcommits, but without further
markup.

If you see a `-Wcast-qual` warning in curl, we appreciate your report
about it.

Closes #16142
2025-03-10 22:30:15 +01:00
Stefan Eissing
a1850ad7de
cfilter: remove 'blocking' connect handling
Remove `blocking` argument from cfilter's connect method.

Implement blocking behaviour in Curl_conn_connect() instead for all
filter chains.

Update filters implementations. Several of which did never use the
paramter (QUIC for example). Simplifies connect handling in TLS filters
that no longer need to loop

Fixed a blocking connect call in FTP when waiting on a socket accept()
which only worked because the filter did not implement it.

Closes #16397
2025-02-20 11:13:51 +01:00
Daniel Stenberg
94c596bbc5
all: remove FIXME and TODO comments
We can always improve. These comments tend to linger and go misleading
or plain wrong over time.

Closes #16283
2025-02-10 14:44:06 +01:00
Viktor Szakats
0c933081fb
GHA/appveyor: add VS2019 job, merge two others, fix build fallout
- add VS2019 job, with Schannel + OpenSSL 1.0.2.
  First MultiSSL job here and add the last missing modern VS version.

- fix builds with mixed ALPN capabilities in MultiSSL unity builds.
  Caused by reusing `HAS_ALPN` between TLS modules without
  resetting it. Fix it by using unique names for each backend.

- merge a VS2010 job into a VS2012. With MultiSSL and x86 OpenSSL.

- make a job static.

- fix `Shared`/`Static` in a job name.

- add `Shared` to job names.

Closes #16231
2025-02-07 10:52:56 +01:00
Michael Schuster
11ea10355a
mbedtls: PSA can be used independently of TLS 1.3 (avoid runtime errors)
Closes #16044
2025-01-29 08:54:10 +01:00
Daniel Stenberg
ea76380299
mbedtls: prefix our feature defines with HAS_
Consistent naming helps.

Closes #16046
2025-01-19 11:23:22 +01:00
Stefan Eissing
8a66c11a29
vtls: only remember the expiry timestamp in session cache
Instead of receive and lifetime, keep only the eppch seconds when a
session expires.

Closes #15861
2024-12-30 16:14:52 +01:00
Stefan Eissing
a2622cdbd5
mbedtls: fix handling of blocked sends
mbedtls is picky when a mbedtls_ssl_write) was previously blocked. It
requires to be called with the same amount of bytes again, or it will
lose bytes, e.g. reporting all was sent but they were not. Remember the
blocked length and use that when set.

Reported-by: Tamás Bálint Misius
Fixes #15801
Closes #15846
2024-12-30 10:20:27 +01:00
Stefan Eissing
68bd759c2b
QUIC: 0RTT for gnutls via CURLSSLOPT_EARLYDATA
When a QUIC TLS session announced early data support and
'CURLSSLOPT_EARLYDATA' is set for the transfer, send initial request and
body (up to the 128k we buffer) as 0RTT when curl is built with
ngtcp2+gnutls.

QUIC 0RTT needs not only the TLS session but the QUIC transport
paramters as well. Store those and the earlydata max value together with
the session in the cache.

Add test case for h3 use of this. Enable quic early data in nghttpx for
testing.

Closes #15667
2024-12-23 17:07:15 +01:00
Stefan Eissing
fa0ccd9f1f
lib: TLS session ticket caching reworked
Described in detail in internal doc TLS-SESSIONS.md

Main points:
- use a new `ssl_peer_key` for cache lookups by connection filters
- recognize differences between TLSv1.3 and other tickets
  * TLSv1.3 tickets are single-use, cache can hold several of them for a peer
  * TLSv1.2 are reused, keep only a single one per peer
- differentiate between ticket BLOB to store (that could be persisted) and object instances
- use put/take/return pattern for cache access
- remember TLS version, ALPN protocol, time received and lifetime of ticket
- auto-expire tickets after their lifetime

Closes #15774
2024-12-20 14:59:23 +01:00
Daniel Stenberg
302bd6b385
vtls: remove 'detach/attach' functions from TLS handler struct
Unused since 7c8bae0d9c

Closes #15776
2024-12-18 15:52:03 +01:00
Daniel Stenberg
86549153ef
vtls: remove unusued 'check_cxn' from TLS handler struct
The last use was removed in 7c5637b8b4

Closes #15775
2024-12-18 14:43:18 +01:00
Daniel Stenberg
2bf48b48b3
vtls: replace "none"-functions with NULL pointers
For TLS backends that don't need these functions, they now use plain
NULL pointers instead of setting a function that does nothing.

Helps making it clearer that a specific TLS handler does not provide
anything specific for that action.

Closes #15772
2024-12-18 13:14:07 +01:00
Stefan Eissing
bcf8a84881
mbedtls: call psa_crypt_init() in global init
Run mbedtls' psa_crypt_init() in the general global init, optionally
protected by mbedtls locks when available.

CI: when building mbedtls, enabled thread safety

Reported-by: wxiaoguang on github
Fixes #15500
Closes #15505
2024-11-07 13:14:41 +01:00
Daniel Stenberg
e1ed6b8e29
mbedtls: remove failf() use from mbedtls_random
Since data can be NULL in here, calling failf() can be bad. This should
also be a terribly rare error so the lack of error message for this
should be manageable.

Reported-by: wxiaoguang on github
Fixes #15485
Closes #15486
2024-11-05 11:54:55 +01:00
Stefan Eissing
30f66c8ba4
mbedtls: handle session as blobs
Use mbedtls_ssl_session_load() and mbedtls_ssl_session_save() to convert
TLS sessions to byte blobs for the session cache.

Fix a skip message to better indicate why the test is skipped for
mbedtls.

Closes #15398
2024-10-24 14:37:59 +02:00
Stefan Eissing
3455d360ce
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
2024-10-13 23:13:04 +02:00
Stefan Eissing
962097b8dd
TLS: TLSv1.3 earlydata support for curl
Based on #14135, implement TLSv1.3 earlydata support for the curl
command line, libcurl and its implementation in GnuTLS.

If a known TLS session announces early data support, and the feature is
enabled *and* it is not a "connect-only" transfer, delay the TLS
handshake until the first request is being sent.

- Add --tls-earldata as new boolean command line option for curl.
- Add CURLSSLOPT_EARLYDATA to libcurl to enable use of the feature.
- Add CURLINFO_EARLYDATA_SENT_T to libcurl, reporting the amount of
  bytes sent and accepted/rejected by the server.

Implementation details:
- store the ALPN protocol selected at the SSL session.
- When reusing the session and enabling earlydata, use exactly
  that ALPN protocol for negoptiation with the server. When the
  sessions ALPN does not match the connections ALPN, earlydata
  will not be enabled.
- Check that the server selected the correct ALPN protocol for
  an earlydata connect. If the server does not confirm or reports
  something different, the connect fails.
- HTTP/2: delay sending the initial SETTINGS frames during connect,
  if not connect-only.

Verification:
- add test_02_32 to verify earlydata GET with nghttpx.
- add test_07_70 to verify earlydata PUT with nghttpx.
- add support in 'hx-download', 'hx-upload' clients for the feature

Assisted-by: ad-chaos on github
Closes #15211
2024-10-11 12:28:22 +02:00
Viktor Szakats
e377c91766
GHA: add Linux and macOS mbedTLS jobs, fix issue
- update mbedTLS repo URL.
- switch local mbedTLS build to use CMake, and Ninja.
  CMake build is required to create and install mbedTLS `pkg-config`
  files. (as of v3.6.1)
  `-DCMAKE_POSITION_INDEPENDENT_CODE=ON` required to avoid this error
  when linking mbedtls to `libcurl.so`:
  ```
  /usr/bin/ld: /home/runner/mbedtls/lib/libmbedcrypto.a(cipher.c.o): warning: relocation against `mbedtls_cipher_base_lookup_table' in read-only section `.text'
  /usr/bin/ld: /home/runner/mbedtls/lib/libmbedtls.a(ssl_tls.c.o): relocation R_X86_64_PC32 against symbol `mbedtls_x509_crt_profile_suiteb' can not be used when making a shared object; recompile with -fPIC
  /usr/bin/ld: final link failed: bad value
  ```
  Ref: https://github.com/curl/curl/actions/runs/11245069259/job/31264386723#step:40:43
- make local mbedTLS build 10x smaller by omitting programs and tests.
- GHA/linux: fix cmake warning by adding `-B .` option.
- GHA/linux: add build-only cmake job for packaged mbedTLS (2.x).
- fix compiler warning when building with mbedTLS 2.x:
  ```
  /home/runner/work/curl/curl/lib/vtls/mbedtls.c:344:1: error: ‘mbed_cipher_suite_get_str’ defined but not used [-Werror=unused-function]
    344 | mbed_cipher_suite_get_str(uint16_t id, char *buf, size_t buf_size,
        | ^~~~~~~~~~~~~~~~~~~~~~~~~
  ```
  Ref: https://github.com/curl/curl/actions/runs/11244999065/job/31264168295#step:40:50

Also in preparation for #15193
Closes #15208
2024-10-09 02:46:01 +02:00
Daniel Stenberg
bcec0840b0
lib: use bool/TRUE/FALSE properly
booleans should use the type 'bool' and set the value to TRUE/FALSE

non-booleans should not be 'bool' and should not set the value to
TRUE/FALSE

Closes #15123
2024-10-03 09:31:56 +02:00
Viktor Szakats
cfae354a9a
codespell: extend checks to more subdirs
- fix issues found.
- fix a few more found locally.

Closes #15072
2024-09-27 10:27:08 +02:00
Viktor Szakats
445fb81237
cmake, Makefile.mk: use -isystem for dep headers, silence BearSSL issues
Patch started out for working around compiler warnings in BearSSL latest
tarball release v0.6 (2018-08-14) and Apple clang 14 with CMake.

Then turned into patching CMake and `Makefile.mk` builds to use
`-isystem` instead `-I` when adding header directories for
dependencies. This avoids compiler warnings in dependency headers,
syncing behaviour with autotools.

Also:
- `Makefile.mk`: add support for BearSSL.
- delete warning suppression for mbedTLS headers. No longer necessary
  after this patch.
  Follow-up to 434db995a7 #12720

Silenced BearSSL warnings:
```
In file included from curl/lib/vtls/bearssl.c:28:
In file included from bearssl/inc/bearssl.h:127:
bearssl/inc/bearssl_hash.h:727:5: warning: 'BR_DOXYGEN_IGNORE' is not defined, evaluates to 0 [-Wundef]
    ^
bearssl/inc/bearssl_hash.h:745:5: warning: 'BR_DOXYGEN_IGNORE' is not defined, evaluates to 0 [-Wundef]
    ^
In file included from curl/lib/vtls/bearssl.c:28:
In file included from bearssl/inc/bearssl.h:136:
bearssl/inc/bearssl_ssl.h:1253:20: warning: implicit conversion loses integer precision: 'unsigned int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        cc->version_min = version_min;
                        ~ ^~~~~~~~~~~
bearssl/inc/bearssl_ssl.h:1254:20: warning: implicit conversion loses integer precision: 'unsigned int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        cc->version_max = version_max;
                        ~ ^~~~~~~~~~~
bearssl/inc/bearssl_ssl.h:1327:28: warning: implicit conversion loses integer precision: 'size_t' (aka 'unsigned long') to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
        ctx->protocol_names_num = num;
                                ~ ^~~
5 warnings generated.
```

(These warnings were fixed in BearSSL Git master in 2019 via
2893441f2efd4603ddd6d7f49011bdda096a4a87 and
ecdf89770ee82dfea6186fb4369cff3d06cd852e.)

Also these two cases, which are caused by an unidentified component
(outside curl) cranking up MSVC warnings in external headers to `/W4`
when ZLIB is deselected:
https://github.com/curl/curl/pull/14859#issuecomment-2351809153

mbedTLS 3.6.1:
```
C:\vcpkg\installed\x64-windows\include\psa\crypto_struct.h(254,13): error C2220: the following warning is treated as an error [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
C:\vcpkg\installed\x64-windows\include\psa\crypto_struct.h(254,13): warning C4200: nonstandard extension used: zero-sized array in struct/union [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
```
Ref: https://github.com/curl/curl/actions/runs/10842694205/job/30107466989?pr=14859#step:10:29

nghttp3 1.5.0:
```
C:\vcpkg\installed\x64-windows\include\nghttp3\nghttp3.h(2678,1): error C2220: the following warning is treated as an error [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
  C:\vcpkg\installed\x64-windows\include\nghttp3\nghttp3.h(2678,1): warning C4324: 'nghttp3_pri': structure was padded due to alignment specifier [D:\a\curl\curl\bld\lib\libcurl_object.vcxproj]
  (compiling source file 'CMakeFiles/libcurl_object.dir/Unity/unity_0_c.c')
```
Ref: https://github.com/curl/curl/actions/runs/10871875297/job/30166233862?pr=14859#step:10:28

Closes #14763
2024-09-19 19:24:01 +02:00
Daniel Stenberg
fbf5d507ce
lib/src: white space edits to comply better with code style
... as checksrc now finds and complains about these.

Closes #14921
2024-09-19 14:59:12 +02:00
Jan Venekamp
7ca719deef
mbedtls: fix incorrect macro condition mbed_dump_cert_info
Follow-up to 88cae14550
2024-08-21 07:50:31 +02:00
Jan Venekamp
925aea1aba
mbedtls: no longer use MBEDTLS_SSL_VERIFY_OPTIONAL
With mbedTLS if the minimum version of TLS is set to 1.3,
MBEDTLS_SSL_VERIFY_OPTIONAL is not available in client mode. See:
2ca6c285/library/ssl_tls.c (L1357)
Also, there might be plans to remove it completely in future mbedTLS
versions.

Switch to always use MBEDTLS_SSL_VERIFY_REQUIRED. If verifypeer or
verifyhost are disabled the corresponding error flags are cleared in the
verify callback function. That is also where verification errors are
logged.

Closes #14591
2024-08-20 12:45:06 +02:00