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path: root/lib/vtls/nss.c
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2016-11-24proxy: Support HTTPS proxy and SOCKS+HTTP(s)Alex Rousskov
* HTTPS proxies: An HTTPS proxy receives all transactions over an SSL/TLS connection. Once a secure connection with the proxy is established, the user agent uses the proxy as usual, including sending CONNECT requests to instruct the proxy to establish a [usually secure] TCP tunnel with an origin server. HTTPS proxies protect nearly all aspects of user-proxy communications as opposed to HTTP proxies that receive all requests (including CONNECT requests) in vulnerable clear text. With HTTPS proxies, it is possible to have two concurrent _nested_ SSL/TLS sessions: the "outer" one between the user agent and the proxy and the "inner" one between the user agent and the origin server (through the proxy). This change adds supports for such nested sessions as well. A secure connection with a proxy requires its own set of the usual SSL options (their actual descriptions differ and need polishing, see TODO): --proxy-cacert FILE CA certificate to verify peer against --proxy-capath DIR CA directory to verify peer against --proxy-cert CERT[:PASSWD] Client certificate file and password --proxy-cert-type TYPE Certificate file type (DER/PEM/ENG) --proxy-ciphers LIST SSL ciphers to use --proxy-crlfile FILE Get a CRL list in PEM format from the file --proxy-insecure Allow connections to proxies with bad certs --proxy-key KEY Private key file name --proxy-key-type TYPE Private key file type (DER/PEM/ENG) --proxy-pass PASS Pass phrase for the private key --proxy-ssl-allow-beast Allow security flaw to improve interop --proxy-sslv2 Use SSLv2 --proxy-sslv3 Use SSLv3 --proxy-tlsv1 Use TLSv1 --proxy-tlsuser USER TLS username --proxy-tlspassword STRING TLS password --proxy-tlsauthtype STRING TLS authentication type (default SRP) All --proxy-foo options are independent from their --foo counterparts, except --proxy-crlfile which defaults to --crlfile and --proxy-capath which defaults to --capath. Curl now also supports %{proxy_ssl_verify_result} --write-out variable, similar to the existing %{ssl_verify_result} variable. Supported backends: OpenSSL, GnuTLS, and NSS. * A SOCKS proxy + HTTP/HTTPS proxy combination: If both --socks* and --proxy options are given, Curl first connects to the SOCKS proxy and then connects (through SOCKS) to the HTTP or HTTPS proxy. TODO: Update documentation for the new APIs and --proxy-* options. Look for "Added in 7.XXX" marks.
2016-11-09vtls: Fail on unrecognized param for CURLOPT_SSLVERSIONJay Satiro
- Fix GnuTLS code for CURL_SSLVERSION_TLSv1_2 that broke when the TLS 1.3 support was added in 6ad3add. - Homogenize across code for all backends the error message when TLS 1.3 is not available to "<backend>: TLS 1.3 is not yet supported". - Return an error when a user-specified ssl version is unrecognized. --- Prior to this change our code for some of the backends used the 'default' label in the switch statement (ie ver unrecognized) for ssl.version and treated it the same as CURL_SSLVERSION_DEFAULT. Bug: https://curl.haxx.se/mail/lib-2016-11/0048.html Reported-by: Kamil Dudka
2016-11-07nss: silence warning 'SSL_NEXT_PROTO_EARLY_VALUE not handled in switch'Kamil Dudka
... with nss-3.26.0 and newer Reported-by: Daniel Stenberg
2016-11-07vtls: support TLS 1.3 via CURL_SSLVERSION_TLSv1_3Kamil Dudka
Fully implemented with the NSS backend only for now. Reviewed-by: Ray Satiro
2016-11-07nss: map CURL_SSLVERSION_DEFAULT to NSS defaultKamil Dudka
... but make sure we use at least TLSv1.0 according to libcurl API Reported-by: Cure53 Reviewed-by: Ray Satiro
2016-10-31gskit, nss: do not include strequal.hKamil Dudka
follow-up to 811a693b80
2016-10-31strcasecompare: replaced remaining rawstr.h with strcase.hDan Fandrich
This is a followup to commit 811a693b
2016-10-31strcasecompare: all case insensitive string compares ignore locale nowDaniel Stenberg
We had some confusions on when each function was used. We should not act differently on different locales anyway.
2016-10-25nss: fix tight loop in non-blocking TLS handhsake over proxyMartin Frodl
... in case the handshake completes before entering CURLM_STATE_PROTOCONNECT Bug: https://bugzilla.redhat.com/1388162
2016-09-22nss: add chacha20-poly1305 cipher suites if supported by NSSKamil Dudka
2016-09-22nss: add cipher suites using SHA384 if supported by NSSKamil Dudka
2016-09-22nss: fix typo in ecdhe_rsa_null cipher suite stringKamil Dudka
As it seems to be a rarely used cipher suite (for securely established but _unencrypted_ connections), I believe it is fine not to provide an alias for the misspelled variant.
2016-08-26nss: work around race condition in PK11_FindSlotByName()Peter Wang
Serialise the call to PK11_FindSlotByName() to avoid spurious errors in a multi-threaded environment. The underlying cause is a race condition in nssSlot_IsTokenPresent(). Bug: https://bugzilla.mozilla.org/1297397 Closes #985
2016-08-26nss: refuse previously loaded certificate from fileKamil Dudka
... when we are not asked to use a certificate from file
2016-08-17nss: make the global variables staticDaniel Stenberg
2016-06-22internals: rename the SessionHandle struct to Curl_easyDaniel Stenberg
2016-05-09TLS: move the ALPN/NPN enable bits to the connectionDaniel Stenberg
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
2016-02-10nss: search slash in forward direction in dup_nickname()Kamil Dudka
It is wasteful to search it backwards if we look for _any_ slash.
2016-02-10nss: do not count enabled cipher-suitesKamil Dudka
We only care if at least one cipher-suite is enabled, so it does not make any sense to iterate till the end and count all enabled cipher-suites.
2016-02-03URLs: change all http:// URLs to https://Daniel Stenberg
2015-12-13http: add libcurl option to allow HTTP/2 for HTTPS onlyDaniel Stenberg
... and stick to 1.1 for HTTP. This is in line with what browsers do and should have very little risk.
2015-09-19ssl: add server cert's "sha256//" hash to verboseDaniel Hwang
Add a "pinnedpubkey" section to the "Server Certificate" verbose Bug: https://github.com/bagder/curl/issues/410 Reported-by: W. Mark Kubacki Closes #430 Closes #410
2015-09-18nss: prevent NSS from incorrectly re-using a sessionKamil Dudka
Without this workaround, NSS re-uses a session cache entry despite the server name does not match. This causes SNI host name to differ from the actual host name. Consequently, certain servers (e.g. github.com) respond by 400 to such requests. Bug: https://bugzilla.mozilla.org/1202264
2015-09-18nss: check return values of NSS functionsKamil Dudka
2015-09-04nss: do not directly access SSL_ImplementedCiphers[]Kamil Dudka
It causes dynamic linking issues at run-time after an update of NSS. Bug: https://lists.fedoraproject.org/pipermail/devel/2015-September/214117.html
2015-07-01SSL: Pinned public key hash supportmoparisthebest
2015-04-27nss: fix compilation failure with old versions of NSSPaul Howarth
Bug: http://curl.haxx.se/mail/lib-2015-04/0095.html
2015-04-22nss: implement public key pinning for NSS backendKamil Dudka
Bug: https://bugzilla.redhat.com/1195771
2015-03-24curl_memory: make curl_memory.h the second-last header file loadedDan Fandrich
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.
2015-03-21nss: error: unused variable 'connssl'Daniel Stenberg
2015-03-20nss: add support for TLS False StartAlessandro Ghedini
2015-03-18nss: explicitly tell NSS to disable NPN/ALPNKamil Dudka
... if disabled at libcurl level. Otherwise, we would allow to negotiate NPN despite curl was invoked with the --no-npn option.
2015-03-17checksrc: use space after commaDaniel Stenberg
2015-03-16Bug #149: Deletion of unnecessary checks before calls of the function "free"Markus Elfring
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>
2015-03-07http2: use CURL_HTTP_VERSION_* symbols instead of NPN_*Daniel Stenberg
Since they already exist and will make comparing easier
2015-03-07nss: make it possible to enable ALPN/NPN without HTTP2Alessandro Ghedini
2015-03-03vtls: use curl_printf.h all overDaniel Stenberg
No need to use _MPRINTF_REPLACE internally.
2015-02-25nss: do not skip Curl_nss_seed() if data is NULLKamil Dudka
In that case, we only skip writing the error message for failed NSS initialization (while still returning the correct error code).
2015-02-25nss: improve error handling in Curl_nss_random()Kamil Dudka
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".
2015-02-19nss: fix NPN/ALPN protocol negotiationAlessandro Ghedini
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.
2015-01-17vtls: Removed unimplemented overrides of curlssl_close_all()Steve Holme
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()
2015-01-16nss: add support for the Certificate Status Request TLS extensionAlessandro Ghedini
Also known as "status_request" or OCSP stapling, defined in RFC6066 section 8. This requires NSS 3.15 or higher.
2015-01-09NSS: fix compiler error when built http2-enabledDaniel Stenberg
2014-12-28vtls: Fixed compilation warning and an ignored return codeSteve Holme
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.
2014-12-27nss: Don't ignore Curl_extract_certinfo() OOM failureSteve Holme
2014-12-27nss: Don't ignore Curl_ssl_init_certinfo() OOM failureSteve Holme
2014-12-27nss: Use 'CURLcode result' for curl result codesSteve Holme
...and don't use CURLE_OK in failure/success comparisons.
2014-12-09http2: avoid logging neg "failure" if h2 was not requestedDaniel Stenberg
2014-10-29nss: drop the code for libcurl-level downgrade to SSLv3Kamil Dudka
This code was already deactivated by commit ec783dc142129d3860e542b443caaa78a6172d56.
2014-10-24SSL: Remove SSLv3 from SSL default due to POODLE attackJay Satiro
- 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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