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2019-12-05setopt: Fix ALPN / NPN user option when built without HTTP2Jay Satiro
- Stop treating lack of HTTP2 as an unknown option error result for CURLOPT_SSL_ENABLE_ALPN and CURLOPT_SSL_ENABLE_NPN. Prior to this change it was impossible to disable ALPN / NPN if libcurl was built without HTTP2. Setting either option would result in CURLE_UNKNOWN_OPTION and the respective internal option would not be set. That was incorrect since ALPN and NPN are used independent of HTTP2. Reported-by: Shailesh Kapse Fixes https://github.com/curl/curl/issues/4668 Closes https://github.com/curl/curl/pull/4672
2019-12-05curl_setup: fix `CURLRES_IPV6` conditionMarcel Raad
Move the definition of `CURLRES_IPV6` to before undefining `HAVE_GETADDRINFO`. Regression from commit 67a08dca27a which caused some tests to fail and others to be skipped with c-ares. Fixes https://github.com/curl/curl/issues/4673 Closes https://github.com/curl/curl/pull/4677
2019-12-04CMake: add support for building with the NSS vtls backendPeter Wu
Options are cross-checked with configure.ac and acinclude.m4. Tested on Arch Linux, untested on other platforms like Windows or macOS. Closes #4663 Reviewed-by: Kamil Dudka
2019-12-03hostip4.c: bump copyright year rangeDaniel Stenberg
2019-12-03curl_setup: disable IPv6 resolver without `getaddrinfo`Marcel Raad
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
2019-12-03openssl: CURLSSLOPT_NO_PARTIALCHAIN can disable partial cert chainsDaniel Stenberg
Closes #4655
2019-12-03openssl: set X509_V_FLAG_PARTIAL_CHAINDaniel Stenberg
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
2019-12-02copyright: fix the year ranges for two filesDaniel Stenberg
Follow-up to 9c1806ae
2019-12-01build: Disable Visual Studio warning "conditional expression is constant"Jay Satiro
- 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
2019-12-01openssl: retrieve reported LibreSSL version at runtimeJay Satiro
- 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
2019-12-01strerror: Add Curl_winapi_strerror for Win API specific errorsJay Satiro
- 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
2019-12-02global_init: undo the "intialized" bump in case of failureDaniel Stenberg
... 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
2019-11-29parsedate: offer a getdate_capped() alternativeDaniel Stenberg
... 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
2019-11-28sha256: bump the copyright year rangeDaniel Stenberg
Follow-up from 66e21520f
2019-11-28curl_setup_once: consistently use WHILE_FALSE in macrosDaniel Gustafsson
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>
2019-11-28http_ntlm: Remove duplicate NSS initialisationSteve Holme
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
2019-11-28checksrc: fix regexp for ASSIGNWITHINCONDITIONDaniel Gustafsson
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>
2019-11-28doh: use dedicated probe slotsNiall
... to easier allow additional DNS transactions. Closes #4629
2019-11-28ngtcp2: fix thread-safety bug in error-handlingDavid Benjamin
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
2019-11-26XFERINFOFUNCTION: support CURL_PROGRESSFUNC_CONTINUEJohn Schroeder
(also for PROGRESSFUNCTION) By returning this value from the callback, the internal progress function call is still called afterward. Closes #4599
2019-11-26TLS: add BearSSL vtls implementationMichael Forney
Closes #4597
2019-11-25multi: add curl_multi_wakeup()Gergely Nagy
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
2019-11-24schannel: fix --tls-max for when min is --tlsv1 or defaultXiaoyin Liu
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
2019-11-22openssl: Revert to less sensitivity for SYSCALL errorsJay Satiro
- 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
2019-11-22openssl: improve error message for SYSCALL during connectDaniel Stenberg
Reported-by: Paulo Roberto Tomasi Bug: https://curl.haxx.se/mail/archive-2019-11/0005.html Closes https://github.com/curl/curl/pull/4593
2019-11-21include: make CURLE_HTTP3 use a new error codeDaniel Stenberg
To avoid potential issues with error code reuse. Reported-by: Christoph M. Becker Assisted-by: Dan Fandrich Fixes #4601 Closes #4627
2019-11-18ngtcp2: use overflow buffer for extra HTTP/3 dataJavier Blazquez
Fixes #4525 Closes #4603
2019-11-18altsvc: bump to h3-24Daniel Stenberg
... as both ngtcp2 and quiche now support that in their master branches Closes #4604
2019-11-18ngtcp2: free used resources on disconnectDaniel Stenberg
Fixes #4614 Closes #4615
2019-11-18ngtcp2: handle key updates as ngtcp2 master branch tells usDaniel Stenberg
Reviewed-by: Tatsuhiro Tsujikawa Fixes #4612 Closes #4613
2019-11-17multi: Fix curl_multi_poll wait when extra_fds && !extra_nfdsGergely Nagy
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
2019-11-17lib: Move lib/ssh.h -> lib/vssh/ssh.hJay Satiro
Follow-up to 5b2d703 which moved ssh source files to vssh. Closes https://github.com/curl/curl/pull/4609
2019-11-16doh: improced both encoding and decodingNiall
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
2019-11-16ngtcp2: increase QUIC window size when data is consumedDaniel Stenberg
Assisted-by: Javier Blazquez Ref #4525 (partial fix) Closes #4600
2019-11-14config-win32: cpu-machine-OS for Windows on ARMMelissa Mears
Define the OS macro properly for Windows on ARM builds. Also, we might as well add the GCC-style IA-64 macro. Closes #4590
2019-11-14multi_poll: avoid busy-loop when called without easy handles attachedDaniel Stenberg
Fixes #4594 Closes #4595 Reported-by: 3dyd on github
2019-11-12quiche: reject headers in the wrong orderDaniel Stenberg
Pseudo header MUST come before regular headers or cause an error. Reported-by: Cynthia Coan Fixes #4571 Closes #4584
2019-11-12openssl: prevent recursive function calls from ctx callbacksDaniel Stenberg
Follow the pattern of many other callbacks. Ref: #4546 Closes #4585
2019-11-11remove_handle: clear expire timers after multi_done()Daniel Stenberg
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
2019-11-10pause: avoid updating socket if done was already calledDaniel Stenberg
... avoids unnecesary recursive risk when the transfer is already done. Reported-by: Richard Bowker Fixes #4563 Closes #4574
2019-11-09strerror: Fix an error looking up some Windows error stringsJay Satiro
- 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
2019-11-08checksrc: repair the copyrightyear checkDaniel Stenberg
- 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
2019-11-08copyrights: fix copyright year rangeDaniel Stenberg
.. because checksrc's copyright year check stopped working. Ref: https://github.com/curl/curl/pull/4547 Closes https://github.com/curl/curl/pull/4549
2019-11-07ntlm: USE_WIN32_CRYPTO check removed to get USE_NTLM2SESSION setChristian Schmitz
Closes #3704
2019-11-06build: fix for CURL_DISABLE_DOHWyatt O'Day
Fixes https://github.com/curl/curl/issues/4565 Closes https://github.com/curl/curl/pull/4566
2019-11-02copyrights: update all copyright notices to 2019 on files changed this yearVilhelm Prytz
Closes #4547
2019-11-02mbedtls: add error message for cert validity starting in the futureBastien Bouclet
Closes #4552
2019-11-01schannel_verify: Fix concurrent openings of CA fileJay Satiro
- 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
2019-10-31gtls: make gnutls_bye() not wait for response on shutdownDaniel Stenberg
... 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
2019-10-30url: make Curl_close() NULLify the pointer tooDaniel Stenberg
This is the common pattern used in the code and by a unified approach we avoid mistakes. Closes #4534
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