This removes following WFA WLANConfig Service actions and the related
state variables: GetAPSettings, SetAPSettings, DelAPSettings,
GetSTASettings, SetSTASettings, DelSTASettings, RebootAP,
ResetAP, RebootSTA, ResetSTA.
While WFA WLANConfig Service version 1.0 claims that some of these are
mandatory to implement for an AP, there are no known implementations
supporting these actions neither in an AP/proxy or an External Registrar
that would use them. These are unlikely to be supported in the future
either and as such, it is just simpler to get rid of them to clean up
the implementation and reduce code size.
Clean up code so that UPnP implementation does not need to include all
the HTTP functionality. In addition, make it easier to share HTTP server
functionality with other components in the future.
Allow more than one pending PutWLANMessage data to be stored (M2/M2D
from multiple external Registrars) and drop pending M2/M2D messages when
the Enrollee replies with M3.
This adds mostly feature complete external Registrar support with the
main missing part being proper support for multiple external Registrars
working at the same time and processing of concurrent registrations when
using an external Registrar.
This code is based on Sony/Saice implementation
(https://www.saice-wpsnfc.bz/) and the changes made by Ted Merrill
(Atheros) to make it more suitable for hostapd design and embedded
systems. Some of the UPnP code is based on Intel's libupnp. Copyrights
and licensing are explained in src/wps/wps_upnp.c in more detail.
