aboutsummaryrefslogtreecommitdiff
path: root/lib/vtls/axtls.c
AgeCommit message (Collapse)Author
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.
2016-10-18select: switch to macros in uppercaseDaniel Stenberg
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.
2016-06-22internals: rename the SessionHandle struct to Curl_easyDaniel Stenberg
2016-06-22vtls: Only call add/getsession if session id is enabledJay Satiro
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.
2016-06-16axtls: Use Curl_wait_ms instead of the less-portable usleepDan Fandrich
2016-06-16axtls: Fixed compile after compile 31c521b0Dan Fandrich
2016-06-01vtls: fix ssl session cache race conditionIvan Avdeev
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
2016-04-03code: style updatesDaniel Stenberg
2016-02-03URLs: change all http:// URLs to https://Daniel Stenberg
2015-03-31axtls: add timeout within Curl_axtls_connectDan Fandrich
This allows test 405 to pass on axTLS.
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.
2015-03-19axtls: version 1.5.2 now requires that config.h be manually includedDan Fandrich
2015-03-03vtls: use curl_printf.h all overDaniel Stenberg
No need to use _MPRINTF_REPLACE internally.
2015-02-06axtls: fix conversion from size_t to int warningDaniel Stenberg
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()
2014-07-31axtls: define curlssl_random using axTLS's PRNGDan Fandrich
2014-05-17axtls: Fixed too long source lineDan Fandrich
2014-05-16axtls: Add a TODO to a potential blocking call with no timeoutDan Fandrich
2014-02-18axtls: comment the call ssl_read repeatedly loopDan Fandrich
2014-02-16axtls: bump copyright yearDaniel Stenberg
2014-02-16axtls: call ssl_read repeatedlyFabian Frank
Perform more work in between sleeps. This is work around the fact that axtls does not expose any knowledge about when work needs to be performed. Depending on connection and how often perform is being called this can save ~25% of time on SSL handshakes (measured on 20ms latency connection calling perform roughly every 10ms).
2014-01-21axtls: fix compiler warning on conversion ssize_t => intFabian Frank
2013-12-26vtls: Updated comments referencing sslgen.c and ssluse.cSteve Holme
2013-12-26vtls: Fixed up include of vtls.hSteve Holme
2013-12-20vtls: moved all TLS/SSL source and header files into subdirDaniel Stenberg