[ Merge of http://go/wvgerrit/124004 ]
When the CDM creates a new usage entry for an offline or streaming
license, the new entry is immediately moved to the lowest available
entry index that has been marked as vacant (kStorageTypeUnknown).
When a license is released, its meta data that is managed by the CDM
is cleared; however, the usage entry's index is marked vacant, but it
is not released. This creates wasted entry space in the usage table.
Unfortunately, defragging the table is computationally expensive and
may not be able to actually free up much space depending on when it
is performed.
For a typical user, this will likely not be an issue as the table
can get quite large compared to the number of licenses an app uses
and the table is partially cleaned on each boot.
GTS tests, however, have reached a point where they fill the usage
table before all tests are complete. This is causing many unexpected
failures for devices. Most of these tests release their license, but
the CDM never reaches a state where it can clean up the table.
By moving newly created entries to the lowest available index directly
after creating the entries, the table never needs to grow unless all
entries are in use. Clean up is now almost never required.
Bug: 180639135
Bug: 180638990
Bug: 180638530
Test: MediaDrmTest#testWidevineApi28
Change-Id: I1a68d90d51384094298b27037778747ce7435374
Merge of these CLs from Widevine sc-dev:
modified: libwvdrmengine/level3/include/clear_cache_function.h
Add cache flush assembly for arm64 L3 to Android header | http://go/wvgerrit/124828
Address compilation errors | http://go/wvgerrit/113083
modified: libwvdrmengine/level3/include/level3_file_system_android.h
Update Widevine Copyright header for android | http://go/wvgerrit/108084
Bug: 184866351
Test: Header changes for clearing cache is verified by one of the partners on their arm64 target;
https: //b.corp.google.com/issues/175432203#comment13
Change-Id: I0ac8f339f65d02abb3080020fbc715b9c0db85b2
[ Merge of http://go/wvgerrit/122984 ]
There was an issue encountered by some vendors with how the usage
table was initialized on some devices. Previously, the CDM would
open an OEMCrypto session first, then initialize the usage table
(loading existing or creating a new one). On these devices,
OEMCrypto_CreateUsageTableHeader() and OEMCrypto_LoadUsageTableHeader()
would fail if there were any open sessions.
This CL changes the initialization process to create/load the usage
table before opening an OEMCrypto session.
This change also lays the ground work for another usage table fix
to address GTS tests failure.
In the process, several of the functions for the usage table have been
split up into smaller chunks of code. This required additional changes
to the usage table unittest to keep them up to date.
Bug: 169195093
Bug: 180639135
Test: Linux unittests and MediaDrmTest
Change-Id: Ifbf35f5d8cff5b89fea9b16edb998c84803f4fbe
build
This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124965
The source code change that produced the obfucated code is here:
https://widevine-internal-review.googlesource.com/c/cdm/+/121763
Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.
This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"
New L3 system IDs included in the obfuscated code:
ID Description
22593 Android S ARM L3 Field Provisioning 3.0
22594 Android S ARM 64 L3 Field Provisioning 3.0
22595 Android S x86 L3 Field Provisioning 3.0
22596 Android S x86 64 L3 Field Provisioning 3.0
Bug: 182584472
Test: L3 unit tests
Test: GTS tests
https://android-build.googleplex.com/builds/forrest/run/L16300000887061939
The only failed case is a test issue due to the new IDs not being added
to the allow list of the test yet. This test passed on local run with
the updated allow list.
Change-Id: If8b8b2cb9291ede0cb2dcc892f5557c3a68c4b96
build
This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124885
The source code change that produced the obfucated code is also included
in the CL above but will not be merged to Android.
Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.
This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"
New L3 system IDs included in the obfuscated code:
ID Description
22585 Android Q ARM L3 Field Provisioning 3.0
22586 Android Q ARM 64 L3 Field Provisioning 3.0
22587 Android Q x86 L3 Field Provisioning 3.0
22588 Android Q x86 64 L3 Field Provisioning 3.0
Bug: 182584472
Test: L3 unit tests
Test: GTS tests
run gts --module GtsMediaTestCases
run gts --module GtsExoPlayerTestCases
run gts --module GtsYouTubeTestCases
Change-Id: I834d3802690c2fda75cb3cfba186c41b6f5dc749
build
This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124623
The source code change that produced the obfucated code is also included
in the CL above but will not be merged to Android.
Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.
This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"
New L3 system IDs included in the obfuscated code:
22589 Android R ARM L3 Field Provisioning 3.0
22590 Android R ARM 64 L3 Field Provisioning 3.0
22591 Android R x86 L3 Field Provisioning 3.0
22592 Android R x86 64 L3 Field Provisioning 3.0
Bug: 182584472
Test: L3 unit tests
Test: GTS tests
run gts --module GtsMediaTestCases
run gts --module GtsExoPlayerTestCases
run gts --module GtsYouTubeTestCases
Change-Id: Ie61f39f50a70ab75547d75f89d9e38264f598bc8
build
This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124886
The source code change that produced the obfucated code is also included
in the CL above but will not be merged to Android.
Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.
This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"
New L3 system IDs included in the obfuscated code:
22589 Android R ARM L3 Field Provisioning 3.0
22590 Android R ARM 64 L3 Field Provisioning 3.0
22591 Android R x86 L3 Field Provisioning 3.0
22592 Android R x86 64 L3 Field Provisioning 3.0
Bug: 182584472
Test: L3 unit tests
Test: GTS tests
run gts --module GtsMediaTestCases
run gts --module GtsExoPlayerTestCases
run gts --module GtsYouTubeTestCases
Change-Id: Ide6962fcaf902bcf31431f9067a89ad75087add6
build
This is a merge of CL from widevine repo (obfuscated code only):
https://widevine-internal-review.googlesource.com/c/cdm/+/124963
The source code change that produced the obfucated code is here:
https://widevine-internal-review.googlesource.com/c/cdm/+/121763
Original commit message from the fix above:
"This is a security improvement against an L3 exploit b/182584472.
The change is to store RSA private key in two parts instead of one,
and load it separately when the key is needed. This will make it
more difficult to find the entire RSA key.
This CL does the key loading part only. Key splitting is done
in Haystack in CL: cl/367515385"
New L3 system IDs included in the obfuscated code:
ID Description
22593 Android S ARM L3 Field Provisioning 3.0
22594 Android S ARM 64 L3 Field Provisioning 3.0
22595 Android S x86 L3 Field Provisioning 3.0
22596 Android S x86 64 L3 Field Provisioning 3.0
Bug: 182584472
Test: L3 unit tests
Test: GTS tests
https://android-build.googleplex.com/builds/forrest/run/L16300000887061939
The only failed case is a test issue due to the new IDs not being added
to the allow list of the test yet. This test passed on local run with
the updated allow list.
Change-Id: I50730b80e27d7ba78d5b28341cfe0f2085b03b2c
