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* Refactor HSTS cache implementationTimur Pocheptsov2017-01-241-99/+81
| | | | | | | | | | | | | | | | | | | | | | | | The original monstrosity is not needed at all. It was born only to implement RFC6797's description of the host matching algorithm (starting from superdomains and moving to subdomains). Actually, it does not really matter how we find known host - it can be a congruent match first instead, and then we proceed with superdomains. This way I can use QMap and my tests so far show it actually works faster (both insertion and lookup), also the code is cleaner now. Also, introduce the new class QHstsPolicy that essentially allows to mark a host as known host and conveniently encapsulates host name/expiration date/ subdomains policy. Add a public API providing access to HSTS policies, so that client code can pre-set or read back discovered known hosts (to implement persistent HSTS storage, for example). We support server-driven HSTS - this means client code is allowed to provide policies as hints to QNetworkAccessManager, but these policies can be overridden by HTTP responses with 'Strict-Transport-Security' headers. Change-Id: I64d250b6dc78bcb01003fadeded5302471d1389e Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
* Add HTTP strict tranport security support to QNAMTimur Pocheptsov2017-01-201-0/+522
HTTP Strict Transport Security (HSTS) is a web security policy that allows a web server to declare that user agents should only interact with it using secure HTTPS connections. HSTS is described by RFC6797. This patch introduces a new API in Network Access Manager to enable this policy or disable it (default - STS is disabled). We also implement QHstsCache which caches known HTTS hosts, does host name lookup and domain name matching; QHstsHeaderParser to parse HSTS headers with HSTS policies. A new autotest added to test the caching, host name matching and headers parsing. [ChangeLog][QtNetwork] Added HTTP Strict Transport Security to QNAM Task-number: QTPM-238 Change-Id: Iabb5920344bf204a0d3036284f0d60675c29315c Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>