XmlConfigSource parses an ApplicationConfig from an xml resource.
Currently this supports app-wide default configuration via the
base-config element, per domain via the domain-config element and
inheritance of unset properties at parse time.
Inheritance of unset properties is currently only:
domain-config -> base-config -> platform default configuration
Where the most specific value is used.
For example: If the base-config specifies trust anchors, all connections
will use those anchors except for connections to a domain which has a
domain-config that specifies trust anchors, in which case the
domain-config's trust anchors will be used. If the domain-config or
base-config don't set trust anchors, or don't exist, then the platform
default trust anchors will be used.
Nested domain-config entries, debug-overrides, and thorough
documentation of the xml format will follow in later commits.
Change-Id: I1232ff1e8079a81b340bc12e142f0889f6947aa0
Initial implementation of a unified application wide static
network security configuration.
This currently encompases:
* Trust decisions such as what trust anchors to use as well as static
certificate pinning.
* Policy on what to do with cleartext traffic.
In order to prevent issues due to interplay of various components in an
application and their potentially different security requirements
configuration can be specified at a per-domain granularity in addition
to application wide defaults.
This change contains the internal data structures and trust management
code, hooking these up in application startup will come in a future
commit.
Change-Id: I53ce5ba510a4221d58839e61713262a8f4c6699c
