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This is a followup to commit 811a693b
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Curl_select_ready() was the former API that was replaced with
Curl_select_check() a while back and the former arg setup was provided
with a define (in order to leave existing code unmodified).
Now we instead offer SOCKET_READABLE and SOCKET_WRITABLE for the most
common shortcuts where only one socket is checked. They're also more
visibly macros.
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Prior to this change we called Curl_ssl_getsessionid and
Curl_ssl_addsessionid regardless of whether session ID reusing was
enabled. According to comments that is in case session ID reuse was
disabled but then later enabled.
The old way was not intuitive and probably not something users expected.
When a user disables session ID caching I'd guess they don't expect the
session ID to be cached anyway in case the caching is later enabled.
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Sessionid cache management is inseparable from managing individual
session lifetimes. E.g. for reference-counted sessions (like those in
SChannel and OpenSSL engines) every session addition and removal
should be accompanied with refcount increment and decrement
respectively. Failing to do so synchronously leads to a race condition
that causes symptoms like use-after-free and memory corruption.
This commit:
- makes existing session cache locking explicit, thus allowing
individual engines to manage lock's scope.
- fixes OpenSSL and SChannel engines by putting refcount management
inside this lock's scope in relevant places.
- adds these explicit locking calls to other engines that use
sessionid cache to accommodate for this change. Note, however,
that it is unknown whether any of these engines could also have
this race.
Bug: https://github.com/curl/curl/issues/815
Fixes #815
Closes #847
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...as otherwise the TLS libs will skip the CN/SAN check and just allow
connection to any server. curl previously skipped this function when SNI
wasn't used or when connecting to an IP address specified host.
CVE-2016-3739
Bug: https://curl.haxx.se/docs/adv_20160518A.html
Reported-by: Moti Avrahami
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Only protocols that actually have a protocol registered for ALPN and NPN
should try to get that negotiated in the TLS handshake. That is only
HTTPS (well, http/1.1 and http/2) right now. Previously ALPN and NPN
would wrongly be used in all handshakes if libcurl was built with it
enabled.
Reported-by: Jay Satiro
Fixes #789
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This also fixes PolarSSL session resume.
Prior to this change the TLS session information wasn't properly
saved and restored for PolarSSL and mbedTLS.
Bug: https://curl.haxx.se/mail/lib-2016-01/0070.html
Reported-by: Thomas Glanzmann
Bug: https://curl.haxx.se/mail/lib-2016-04/0095.html
Reported-by: Moti Avrahami
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... and stick to 1.1 for HTTP. This is in line with what browsers do and
should have very little risk.
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Global private symbols MUST start with Curl_!
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and simplify code by changing if-elses to a switch()
CID 1291706: Logically dead code. Execution cannot reach this statement
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"unreachable: Since the loop increment is unreachable, the loop body
will never execute more than once."
Coverity CID 1291707
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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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Correctly check for strncmp() return value (it returns 0 if the strings
match).
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Prior to this change the options for exclusive SSL protocol versions did
not actually set the protocol exclusive.
http://curl.haxx.se/mail/lib-2015-01/0002.html
Reported-by: Dan Fandrich
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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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The return type of this function is a boolean value, and even uses a
bool internally, so use bool in the function declaration as well as
the variables that store the return value, to avoid any confusion.
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- Prior to this change no SSL minimum version was set by default at
runtime for PolarSSL. Therefore in most cases PolarSSL would probably
have defaulted to a minimum version of SSLv3 which is no longer secure.
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Signed-off-by: Catalin Patulea <cat@vv.carleton.ca>
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Forwards the setting as minimum ssl version (if set) to polarssl. If
the server does not support the requested version the SSL Handshake will
fail.
Bug: http://curl.haxx.se/bug/view.cgi?id=1419
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PolarSSL added ALPN support in their 1.3.6 release.
See:
https://polarssl.org/tech-updates/releases/polarssl-1.3.6-released
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The debug messages printed inside PolarSSL always seems to end with a
newline. So 'infof()' should not add one. Besides the trace 'line'
should be 'const'.
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Remove all #ifdef/else/endif macros that ensure compatibility with polarssl
version previous than 1.3.
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API has changed since version 1.3. A compatibility header has been created
to ensure forward compatibility for code using old API:
* x509 certificate structure has been renamed to from x509_cert to
x509_crt
* new dedicated setter for RSA certificates ssl_set_own_cert_rsa,
ssl_set_own_cert is for generic keys
* ssl_default_ciphersuites has been replaced by function
ssl_list_ciphersuites()
This patch drops the use of the compatibly header.
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Also fixed a function name change in the version requirement bump
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Rename x509_cert to x509_crt and add "compat-1.2.h"
include.
This would still need some more thorough conversion
in order to drop "compat-1.2.h" include.
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