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Also, use `CURLRES_IPV6` only for actual DNS resolution, not for IPv6
address support. This makes it possible to connect to IPv6 literals by
setting `ENABLE_IPV6` even without `getaddrinfo` support. It also fixes
the CMake build when using the synchronous resolver without
`getaddrinfo` support.
Closes https://github.com/curl/curl/pull/4662
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Closes #4655
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Have intermediate certificates in the trust store be treated as
trust-anchors, in the same way as self-signed root CA certificates
are. This allows users to verify servers using the intermediate cert
only, instead of needing the whole chain.
Other TLS backends already accept partial chains.
Reported-by: Jeffrey Walton
Bug: https://curl.haxx.se/mail/lib-2019-11/0094.html
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Follow-up to 9c1806ae
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- Disable warning C4127 "conditional expression is constant" globally
in curl_setup.h for when building with Microsoft's compiler.
This mainly affects building with the Visual Studio project files found
in the projects dir.
Prior to this change the cmake and winbuild build systems already
disabled 4127 globally for when building with Microsoft's compiler.
Also, 4127 was already disabled for all build systems in the limited
circumstance of the WHILE_FALSE macro which disabled the warning
specifically for while(0). This commit removes the WHILE_FALSE macro and
all other cruft in favor of disabling globally in curl_setup.
Background:
We have various macros that cause 0 or 1 to be evaluated, which would
cause warning C4127 in Visual Studio. For example this causes it:
#define Curl_resolver_asynch() 1
Full behavior is not clearly defined and inconsistent across versions.
However it is documented that since VS 2015 Update 3 Microsoft has
addressed this somewhat but not entirely, not warning on while(true) for
example.
Prior to this change some C4127 warnings occurred when I built with
Visual Studio using the generated projects in the projects dir.
Closes https://github.com/curl/curl/pull/4658
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- Retrieve LibreSSL runtime version when supported (>= 2.7.1).
For earlier versions we continue to use the compile-time version.
Ref: https://man.openbsd.org/OPENSSL_VERSION_NUMBER.3
Closes https://github.com/curl/curl/pull/2425
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- In all code call Curl_winapi_strerror instead of Curl_strerror when
the error code is known to be from Windows GetLastError.
Curl_strerror prefers CRT error codes (errno) over Windows API error
codes (GetLastError) when the two overlap. When we know the error code
is from GetLastError it is more accurate to prefer the Windows API error
messages.
Reported-by: Richard Alcock
Fixes https://github.com/curl/curl/issues/4550
Closes https://github.com/curl/curl/pull/4581
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... so that failures in the global init function don't count as a
working init and it can then be called again.
Reported-by: Paul Groke
Fixes #4636
Closes #4653
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... and use internally. This function will return TIME_T_MAX instead of
failure if the parsed data is found to be larger than what can be
represented. TIME_T_MAX being the largest value curl can represent.
Reviewed-by: Daniel Gustafsson
Reported-by: JanB on github
Fixes #4152
Closes #4651
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Follow-up from 66e21520f
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The WHILE_FALSE construction is used to avoid compiler warnings in
macro constructions. This fixes a few instances where it was not
used in order to keep the code consistent.
Closes #4649
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
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Given that this is performed by the NTLM code there is no need to
perform the initialisation in the HTTP layer. This also keeps the
initialisation the same as the SASL based protocols and also fixes a
possible compilation issue if both NSS and SSPI were to be used as
multiple SSL backends.
Reviewed-by: Kamil Dudka
Closes #3935
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The regexp looking for assignments within conditions was too greedy
and matched a too long string in the case of multiple conditionals
on the same line. This is basically only a problem in single line
macros, and the code which exemplified this was essentially:
do { if((x) != NULL) { x = NULL; } } while(0)
..where the final parenthesis of while(0) matched the regexp, and
the legal assignment in the block triggered the warning. Fix by
making the regexp less greedy by matching for the tell-tale signs
of the if statement ending.
Also remove the one occurrence where the warning was disabled due
to a construction like the above, where the warning didn't apply
when fixed.
Closes #4647
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
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... to easier allow additional DNS transactions.
Closes #4629
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ERR_error_string(NULL) should never be called. It places the error in a
global buffer, which is not thread-safe. Use ERR_error_string_n with a
local buffer instead.
Closes #4645
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(also for PROGRESSFUNCTION)
By returning this value from the callback, the internal progress
function call is still called afterward.
Closes #4599
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Closes #4597
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This commit adds curl_multi_wakeup() which was previously in the TODO
list under the curl_multi_unblock name.
On some platforms and with some configurations this feature might not be
available or can fail, in these cases a new error code
(CURLM_WAKEUP_FAILURE) is returned from curl_multi_wakeup().
Fixes #4418
Closes #4608
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Prior to this change schannel ignored --tls-max (CURL_SSLVERSION_MAX_
macros) when --tlsv1 (CURL_SSLVERSION_TLSv1) or default TLS
(CURL_SSLVERSION_DEFAULT), using a max of TLS 1.2 always.
Closes https://github.com/curl/curl/pull/4633
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- Disable the extra sensitivity except in debug builds (--enable-debug).
- Improve SYSCALL error message logic in ossl_send and ossl_recv so that
"No error" / "Success" socket error text isn't shown on SYSCALL error.
Prior to this change 0ab38f5 (precedes 7.67.0) increased the sensitivity
of OpenSSL's SSL_ERROR_SYSCALL error so that abrupt server closures were
also considered errors. For example, a server that does not send a known
protocol termination point (eg HTTP content length or chunked encoding)
_and_ does not send a TLS termination point (close_notify alert) would
cause an error if it closed the connection.
To be clear that behavior made it into release build 7.67.0
unintentionally. Several users have reported it as an issue.
Ultimately the idea is a good one, since it can help prevent against a
truncation attack. Other SSL backends may already behave similarly (such
as Windows native OS SSL Schannel). However much more of our user base
is using OpenSSL and there is a mass of legacy users in that space, so I
think that behavior should be partially reverted and then rolled out
slowly.
This commit changes the behavior so that the increased sensitivity is
disabled in all curl builds except curl debug builds (DEBUGBUILD). If
after a period of time there are no major issues then it can be enabled
in dev and release builds with the newest OpenSSL (1.1.1+), since users
using the newest OpenSSL are the least likely to have legacy problems.
Bug: https://github.com/curl/curl/issues/4409#issuecomment-555955794
Reported-by: Bjoern Franke
Fixes https://github.com/curl/curl/issues/4624
Closes https://github.com/curl/curl/pull/4623
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Reported-by: Paulo Roberto Tomasi
Bug: https://curl.haxx.se/mail/archive-2019-11/0005.html
Closes https://github.com/curl/curl/pull/4593
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To avoid potential issues with error code reuse.
Reported-by: Christoph M. Becker
Assisted-by: Dan Fandrich
Fixes #4601
Closes #4627
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Fixes #4525
Closes #4603
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... as both ngtcp2 and quiche now support that in their master branches
Closes #4604
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Fixes #4614
Closes #4615
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Reviewed-by: Tatsuhiro Tsujikawa
Fixes #4612
Closes #4613
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Prior to this change:
The check if an extra wait is necessary was based not on the
number of extra fds but on the pointer.
If a non-null pointer was given in extra_fds, but extra_nfds
was zero, then the wait was skipped even though poll was not
called.
Closes https://github.com/curl/curl/pull/4610
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Follow-up to 5b2d703 which moved ssh source files to vssh.
Closes https://github.com/curl/curl/pull/4609
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Improved estimation of expected_len and updated related comments;
increased strictness of QNAME-encoding, adding error detection for empty
labels and names longer than the overall limit; avoided treating DNAME
as unexpected;
updated unit test 1655 with more thorough set of proofs and tests
Closes #4598
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Assisted-by: Javier Blazquez
Ref #4525 (partial fix)
Closes #4600
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Define the OS macro properly for Windows on ARM builds. Also, we might
as well add the GCC-style IA-64 macro.
Closes #4590
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Fixes #4594
Closes #4595
Reported-by: 3dyd on github
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Pseudo header MUST come before regular headers or cause an error.
Reported-by: Cynthia Coan
Fixes #4571
Closes #4584
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Follow the pattern of many other callbacks.
Ref: #4546
Closes #4585
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Since 59041f0, a new timer might be set in multi_done() so the clearing
of the timers need to happen afterwards!
Reported-by: Max Kellermann
Fixes #4575
Closes #4583
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... avoids unnecesary recursive risk when the transfer is already done.
Reported-by: Richard Bowker
Fixes #4563
Closes #4574
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- Use FORMAT_MESSAGE_IGNORE_INSERTS to ignore format specifiers in
Windows error strings.
Since we are not in control of the error code we don't know what
information may be needed by the error string's format specifiers.
Prior to this change Windows API error strings which contain specifiers
(think specifiers like similar to printf specifiers) would not be shown.
The FormatMessage Windows API call which turns a Windows error code into
a string could fail and set error ERROR_INVALID_PARAMETER if that error
string contained a format specifier. FormatMessage expects a va_list for
the specifiers, unless inserts are ignored in which case no substitution
is attempted.
Ref: https://devblogs.microsoft.com/oldnewthing/20071128-00/?p=24353
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- Consider a modified file to be committed this year.
- Make the travis CHECKSRC also do COPYRIGHTYEAR scan in examples and
includes
- Ignore 0 parents when getting latest commit date of file.
since in the CI we're dealing with a truncated repo of last 50 commits,
the file's most recent commit may not be available. when this happens
git log and rev-list show the initial commit (ie first commit not to be
truncated) but that's incorrect so ignore it.
Ref: https://github.com/curl/curl/pull/4547
Closes https://github.com/curl/curl/pull/4549
Co-authored-by: Jay Satiro
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.. because checksrc's copyright year check stopped working.
Ref: https://github.com/curl/curl/pull/4547
Closes https://github.com/curl/curl/pull/4549
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Closes #3704
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Fixes https://github.com/curl/curl/issues/4565
Closes https://github.com/curl/curl/pull/4566
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Closes #4547
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Closes #4552
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- Open the CA file using FILE_SHARE_READ mode so that others can read
from it as well.
Prior to this change our schannel code opened the CA file without
sharing which meant concurrent openings (eg an attempt from another
thread or process) would fail during the time it was open without
sharing, which in curl's case would cause error:
"schannel: failed to open CA file".
Bug: https://curl.haxx.se/mail/lib-2019-10/0104.html
Reported-by: Richard Alcock
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... as it can make it wait there for a long time for no good purpose.
Patched-by: Jay Satiro
Reported-by: Bylon2 on github
Adviced-by: Nikos Mavrogiannopoulos
Fixes #4487
Closes #4541
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This is the common pattern used in the code and by a unified approach we
avoid mistakes.
Closes #4534
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... or risk DoH memory leaks.
Reported-by: Paul Dreik
Fixes #4463
Closes #4527
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On macOS/BSD, trying to call sendto on a connected UDP socket fails
with a EISCONN error. Because the singleipconnect has already called
connect on the socket when we're trying to use it for QUIC transfers
we need to use plain send instead.
Fixes #4529
Closes https://github.com/curl/curl/pull/4533
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The ngtcp2 QUIC backend was using the MSG_DONTWAIT flag for send/recv
in order to perform nonblocking operations. On Windows this flag does
not exist. Instead, the socket must be set to nonblocking mode via
ioctlsocket.
This change sets the nonblocking flag on UDP sockets used for QUIC on
all platforms so the use of MSG_DONTWAIT is not needed.
Fixes #4531
Closes #4532
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