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This header file must be included after all header files except
memdebug.h, as it does similar memory function redefinitions and can be
similarly affected by conflicting definitions in system or dependent
library headers.
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... if disabled at libcurl level. Otherwise, we would allow to
negotiate NPN despite curl was invoked with the --no-npn option.
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The function "free" is documented in the way that no action shall occur for
a passed null pointer. It is therefore not needed that a function caller
repeats a corresponding check.
http://stackoverflow.com/questions/18775608/free-a-null-pointer-anyway-or-check-first
This issue was fixed by using the software Coccinelle 1.0.0-rc24.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
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Since they already exist and will make comparing easier
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No need to use _MPRINTF_REPLACE internally.
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In that case, we only skip writing the error message for failed NSS
initialization (while still returning the correct error code).
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The vtls layer now checks the return value, so it is no longer necessary
to abort if a random number cannot be provided by NSS. This also fixes
the following Coverity report:
Error: FORWARD_NULL (CWE-476):
lib/vtls/nss.c:1918: var_compare_op: Comparing "data" to null implies that "data" might be null.
lib/vtls/nss.c:1923: var_deref_model: Passing null pointer "data" to "Curl_failf", which dereferences it.
lib/sendf.c:154:3: deref_parm: Directly dereferencing parameter "data".
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Correctly check for memcmp() return value (it returns 0 if the strings match).
This is not really important, since curl is going to use http/1.1 anyway, but
it's still a bug I guess.
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Carrying on from commit 037cd0d991, removed the following unimplemented
instances of curlssl_close_all():
Curl_axtls_close_all()
Curl_darwinssl_close_all()
Curl_cyassl_close_all()
Curl_gskit_close_all()
Curl_gtls_close_all()
Curl_nss_close_all()
Curl_polarssl_close_all()
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Also known as "status_request" or OCSP stapling, defined in RFC6066 section 8.
This requires NSS 3.15 or higher.
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curl_schannel.h:123: warning: right-hand operand of comma expression
has no effect
Some instances of the curlssl_close_all() function were declared with a
void return type whilst others as int. The schannel version returned
CURLE_NOT_BUILT_IN and others simply returned zero, but in all cases the
return code was ignored by the calling function Curl_ssl_close_all().
For the time being and to keep the internal API consistent, changed all
declarations to use a void return type.
To reduce code we might want to consider removing the unimplemented
versions and use a void #define like schannel does.
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...and don't use CURLE_OK in failure/success comparisons.
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This code was already deactivated by commit
ec783dc142129d3860e542b443caaa78a6172d56.
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- Remove SSLv3 from SSL default in darwinssl, schannel, cyassl, nss,
openssl effectively making the default TLS 1.x. axTLS is not affected
since it supports only TLS, and gnutls is not affected since it already
defaults to TLS 1.x.
- Update CURLOPT_SSLVERSION doc
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... when the handshake succeeds
This fixes a connection failure when FTPS handle is reused.
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This fixes a copy-paste mistake from commit 2968f957.
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To force each backend implementation to really attempt to provide proper
random. If a proper random function is missing, then we can explicitly
make use of the default one we use when TLS support is missing.
This commit makes sure it works for darwinssl, gnutls, nss and openssl.
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The minimal required version of NSS is 3.14.x so it does not make sense
to check for NSS 3.12.0+ at run time.
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Otherwise NSS could use an already freed item for another connection.
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... and spell it as crl_der instead of crlDER
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This feature was unintentionally disabled by commit ff92fcfb.
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... due to calling SSL_VersionRangeGet() with NULL file descriptor
reported-by: upstream tests 305 and 404
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... during the non-blocking SSL handshake
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We're progressing throught drafts so there's no point in having a fixed
one in a symbol that'll survive.
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... if built against a new enough version of NSS
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... if built against a new enough version of NSS
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... but allow them to be enabled/disabled explicitly. The default
policy should be maintained at the NSS level.
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when using --http2 one can now selectively disable NPN or ALPN with
--no-alpn and --no-npn. for now honored with NSS only.
TODO: honor this option with GnuTLS and OpenSSL
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SSL_ENABLE_ALPN can be used for preprocessor ALPN feature detection,
but not SSL_NEXT_PROTO_SELECTED, since it is an enum value and not a
preprocessor macro.
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Add ALPN and NPN support for NSS. This allows cURL to negotiate
HTTP/2.0 connections when built with NSS.
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Offer TLSv1.0 to 1.2 by default, still fall back to SSLv3
if --tlsv1[.N] was not specified on the command line.
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It is not provided by NSS public headers.
Bug: https://bugzilla.redhat.com/1058776
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... that the user does not ask for
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