NETWORK_STACK_UID check was introduced by aosp/1134635, and it
assumed that wifi factories/agents will be running on the network
stack process, but it didn't eventually. It runs in the system
server instead. So remove this check.

Bug: 170598012
Test: atest FrameworksNetTests
Change-Id: Ie11268738e364e252f18876f7a4a0dc064ca8b9c

* changes:
  Make PacProxyService be a system service
  Revert^2 "Refactor setCurrentProxyScriptUrl to a void method"

* changes:
  Using jniThrowErrnoException in android_util_Process
  Using jniThrowErrnoException in android_os_SharedMemory
  Using jniThrowErrnoException in android_net_NetworkUtils

Bug: 172183305
Test: N/A
Change-Id: Id274295d6c8c97d3014214f875168ff968f79bb6

As attested by numerous TODOs in the code, a new way of
representing network quality and policy is needed instead
of an int.

An int representing the quality of the network requires
all parties using it to know how all other parties are
using it, and implementation details about the decision
algorithm. For all intents and purposes, the selection
is left to individual network factories who try to
achieve a desired result while piecing together all
possible states of the system.

As the number of such cases and desires increases, this
becomes both intractable and unmaintainable. Indeed, at
this time in the codebase nobody can really predict exactly
how a given change in score will affect selection across
the board, and it is essentially impossible to figure out
the behavior of network selection by inspecting the code
because the moving parts are scattered throughout the
entire codebase.

Having an object encapsulating policy and quality values
will let us centralize the selection and make it again
possible to maintain without knowledge of all behaviors
of all network factories. It will also provide better
guarantees of respecting policy, and allow bugfixes that
were not possible before because they'd touch too many
parts of the code.

Test: FrameworksNetTests FrameworksWifiTests NetworkStackTests
Change-Id: I3185a6412b9b659798faf0c6882699e9c63cc115

This reverts commit 62b1df44.

Reason for revert: Build broken: b/182721112

Change-Id: Ibc84ec6d7900fdcf0bc14cd7036f9c08287711db

PacProxyInstaller class is running a thread all the time and is
listening to intent ACTION_PAC_REFRESH so it would be better to
make it be a system service with a manager class PacProxyManager
which is obtained with getSystemService(PacProxyManager.class).
Besides, rename PacProxyInstaller to PacProxyService will
be easier to know it's the service for PacProxyManager.

ConnectivityService is going to be a mainline module and it
needs constructor of PacProxyService to be SystemApi.
However, in current design, it needs to pass a handler and
an int arguments to the constructor which would be difficult
to maintain if just expose the constructor directly.

So, define a listener for the event that the current PAC
proxy has been installed so that the handler and the int
arguments can be removed from the constructor.

Bug: 177035719
Test: FrameworksNetTests
Change-Id: I2abff75ec59a17628ef006aad348c53fadbed076

ConnectivityService is going to become a mainline module, and
it will not able to use hidden method anymore. Using PlatformProperties
as a static library instead of hidden API.

Bug: 170917042
Test: atest FrameworksNetTests
Merged-In: I3a3deca5d2e0f690db8c0061de2db2217376d268
Change-Id: I3a3deca5d2e0f690db8c0061de2db2217376d268

The caller to create a TestNetworkService via
ConnectivityManager#startOrGetTestNetworkManager should have
passed the MANAGE_TEST_NETWORKS permission check and the caller
doesn't need to declare the permission to pass the permission
check of registerNetworkProvider. So call clearCallingIdentity
when calling registerNetworkProvider in TestNetworkService.

Bug: 181573283
Test: atest CtsNetTestCases:ConnectivityManagerTest#testRequestBackgroundNetwork
Change-Id: Ia28627dacf933d1937978ed9709b975c9a4660ce

ParseException constructors are used by both platform and mainline
module code, so they can't be package-private.
Removing dependencies on either side is not possible as the class
itself is part of the public API, and supports APIs on both sides.

Having the constructors part of the API makes the class usable by both
sides.

Fixes: 182705505
Test: CtsNetTestCases for APIs using the exception
Change-Id: Ia396ab2fa3afaed3cf474c8e60f72fc7f3f4fded

-Connectivity is becoming a mainline module in S but mainline
modules are not allowed to use non-formal APIs. Thus, replace
non-formal API InetAddress#parseNumericAddress to
InetAddresses#parseNumericAddress.
- Add deprecated method legacyParseIpAndMask() for IpPrefix and
LinkAddress. Because InetAddresses#parseNumericAddress has
a little different behavior in some case, but these two classes
should keep working as before. So these two classes will use
the new deprecated method.

Bug: 181756157
Test: FrameworksNetTests
Change-Id: I1c96b75f0b8d5e93304a39b4a8c8849964e5e810

- Expose PRIVATE_DNS_MODE_OFF, PRIVATE_DNS_MODE_OPPORTUNISTIC and
PRIVATE_DNS_MODE_PROVIDER_HOSTNAME for external users.
- Since PRIVATE_DNS_DEFAULT_MODE_FALLBACK might be changed from
release to release, so it cannot be exposed as a system API.
Remove PRIVATE_DNS_DEFAULT_MODE_FALLBACK and have a new API -
getPrivateDnsMode() for users to get the private DNS mode instead.

Bug: 172183305
Test: atest FrameworksNetTests CtsNetTestCases
Change-Id: I02a1e91b4eafb5f5df3eada1c07b99849a050c3c
Merged-In: I02a1e91b4eafb5f5df3eada1c07b99849a050c3c

The VpnType annotation is a hidden symbol, and should be
kept hidden as annotations are disallowed by API guidelines.

Remove its usage in VpnTransportInfo as users of annotated constants
that build against API stubs are expected not to use the annotation.

Bug: 173331190
Test: m
Change-Id: I171fa57f6279defad081c3cd16265d58ec55e57d

* changes:
  [VCN12] Expose setSubIds/getSubIds APIs
  [VCN04] Add Subscription Id set into NetworkCapabilities

* changes:
  Use new API - getIpSecNetIdRange() in IpSecService
  Add a new API to get the network ID range of IPSec tunnel interface

Create the ServiceConnectivityResources package, which contains
resources Connectivity unbundled from platform resources.

Migrate the first few resources from ConnectivityService that have no
RRO in AOSP. To avoid boot time impact, avoid loading the resources in
the ConnectivityService constructor.

Bug: 182125649
Test: atest FrameworksNetTests
Merged-In: I77ac6f4303c54acc96f16e18ef02add30298ff3d
Change-Id: I77ac6f4303c54acc96f16e18ef02add30298ff3d

Existing NetworkCallback users will get NetworkCapabilities with
location sensitive data removed (except for ownerUid which will be
added for existing apps for backwards compatibility). Apps
have to opt-in to receive location sensitive data.

Note: This was chosen because WifiInfo is the only TransportInfo tha
has location sensitive info & that was added only in Android 12. If we
choose to default to true, all existings apps retrieving
NetworkCapabilities for wifi networks will be blamed for location access
unnecessarily.

Changes:
i) Add a flag in NetworkCallback creation to retrieve
NetworkCapabilities with location sensitive info in their callback.
(More flags are being planned for NetworkCallback for throttling
callback frequency, etc)
ii) For NetworkCapabilities.getOwnerUid(), we will continue to send the
data for apps targeting older SDK (since this is an existing field and
the new flag defaults location sensitive data to off).

Bug: 156867433
Test: atest android.net
Test: atest com.android.server
Change-Id: If70b5ea6f5c8885f0c353c8df08a826d55fe7f7a

* changes:
  Fix common tests on Q and R
  Add Ethernet, TestNetworkSpecifier API