Commit Graph

21 Commits

Author SHA1 Message Date
Rahul Frias
53019f0459 Update Widevine Copyright header
[ Merge of http://go/wvgerrit/108103 ]

The Widevine License Agreement has been renamed to use inclusive
language. This covers files in the cdm, linux, platform, util directory
in addition to some other files.

Bug: 168562298
Test: verified compilation (comment only change)
Change-Id: I9a4977fd4c2ad951769b6be84263f81bd0f22678
2020-10-21 12:54:20 -07:00
Rahul Frias
ec8bed38f4 Update Widevine Copyright header for android
[ Merge of http://go/wvgerrit/108084 ]

The Widevine License Agreement has been renamed to use inclusive
language. This covers files in the android directory.

Bug: 168562298
Test: verified compilation (comment only change)
Change-Id: I0f9e6445e0168ebe85425baeb81371e182e5a39c
2020-10-21 02:49:05 -07:00
Alex Dale
f22cd20466 Enabled log formatting warnings.
[ Merge of http://go/wvgerrit/105025 ]

Clang and GCC allow for warnings against the arguments for printf-like
functions (e.i. LOGx).  These validate that the format type specified
in the format string match the corresponding argument type.

Most of the time, format specifer errors are benign; hence why they
haven't been seen as an error so far.  However, with the enabling of
specifier warnings and the enabling of warnings as errors on certain
platforms, these existing errors need to be addressed.

This CL enables format specifier warnings for most of the Widevine
code, with the OEMCrypto L3 implementation which has a single error
which requires a fix in the haystack code before being fixed in the
Widevine branch.

Strict format string warnings are not enabled for non-LP64 systems.

Bug: 137583127
Test: Compiled for Linux and Android
Change-Id: I051398332d31a20457b86563a90ad8f6d428445f
2020-09-08 15:46:15 -07:00
John W. Bruce
a62886b925 Combined Decrypt Calls
(This is a merge of http://go/wvgerrit/93829,
http://go/wvgerrit/93830, http://go/wvgerrit/93832,
http://go/wvgerrit/93833, and http://go/wvgerrit/93834 from the
Widevine repo.)

This implements the CDM code changes necessary to take advantage of
Combined Decrypt Calls on OEMCrypto v16. The result of this is that
WVCryptoPlugin is much lighter now because it can pass the full sample
down to the core in one call, but CryptoSession is heavier, as it now
has to handle more complex fallback logic when devices can't handle
multiple subsamples at once.

This patch also removes support for the 'cens' and 'cbc1' schema, which
are being dropped in OEMCrypto v16. This fixes an overflow in the code
for handling those schemas by removing it entirely.

This patch also fixes the "in chunks" legacy decrypt path to use larger
chunk sizes on devices with higher resource rating tiers.

Bug: 135285640
Bug: 123435824
Bug: 138584971
Bug: 139257871
Bug: 78289910
Bug: 149361893
Test: no new CE CDM Unit Test failures
Test: Google Play plays
Test: Netflix plays
Test: no new GTS failures
Change-Id: Ic4952c9fa3bc7fd5ed08698e88254380a7a18514
2020-02-19 11:44:35 -08:00
Fred Gylys-Colwell
7665614b2e OEMCrypto v16.1
Merge of http://go/wvgerrit/93404

This CL updates the Widevine CDM to support OEMCrypto v16.1

Test: Tested in 16.2 CL
Bug: 141247171
Change-Id: I69bd993500f6fb63bf6010c8b0250dc7acc3d71b
2020-02-03 14:45:32 -08:00
Alex Dale
7ab69e7768 CdmRandomGenerator meets UniformRandomBitGenerator named requirements.
[ Merge of http://go/wvgerrit/89766 ]

Certain C++11 (and newer) standard library functions and classes which
utilize random number generators require that the random number
generators meet the specifications of C++11's UniformRandomBitGenerator
name requirements.  This is especially important as C++17 will remove
support non-compliant alternatives.

This change updates CdmRandomGenerator to meet these requirements.

Bug: 143494945
Test: Linux and Android unit tests
Change-Id: Ib6df44da4969ad7596b16d447c3f8bd9864698f6
2019-11-20 14:12:49 -08:00
Rahul Frias
e884b06e54 Correction to file remove utility
[ Merge of http://go/wvgerrit/84989 ]

FileUtils::Remove() when used with wildcards would ignore a prefix specified
before the asterisk and delete all files with the same extension.

Fix proposed by broadcom.

Bug: 120039689
Test: WV unit/integration tests
Change-Id: Iddc6c6b1983c41b501b21f34626f56c0b74af6c8
2019-09-05 18:13:39 -07:00
Alex Dale
ee56d93454 Creating a new RNG and replacing rand().
[ Merge of http://go/wvgerrit/84607 ]
[ Merge of http://go/wvgerrit/84608 ]

The primary goal is to replace the use of `rand()` with the random
number generators provided with the C++11 standard.

This simplified generator wraps some of the technical aspects of the
<random> library and provides an interface for uniformly distributed
integers.

As part of the `rand()` purge in the CDM, all uses of the C random int
function in `core()` have been removed.  Places that previously used
`rand()` now use `CdmRandom` facilities.

Test: Linux unittest and Android unittest
Bug: 130680365
Change-Id: Ica383870536ed462dbb80e630c2d66845e38b937
2019-08-26 14:39:50 -07:00
Alex Dale
182ca34fca Created an ArraySize utility function.
[ Merge of http://go/wvgerrit/82232 ]

The new function `ArraySize` will only work for compile-time fixed-length
arrays, and will provide compiler errors if the provided argument is not an
array.

This will replace the commonly used macro `N_ELEM()` which uses `sizeof()`.

Test: Linux unittest
Bug: 137041745
Change-Id: I0f5c268197a8062a99ccba43c73349e97f66eb02
2019-07-15 17:09:14 -07:00
Alex Dale
906dc12c5d Formatted WV utils/include files.
[ Merge of http://go/wvgerrit/80943 ]

Ran `git clang-format` on files in utils/include.
Used the new .clang-format config.

Bug: 134365840
Test: WV unit tests
Change-Id: Ifc0950236ecd610792e9add11ac07c63485f3f0c
2019-06-27 13:42:10 -07:00
John W. Bruce
84d9813b81 Add LOG_SILENT LogPriority Again
(This is a merge of http://go/wvgerrit/73743 and
http://go/wvgerrit/73903)

The CE CDM implements the ability to silence all logging with a "silent"
log level. However, under the covers, this assigned a value to g_cutoff
that was not a member of LogPriority, which fails some extremely strict
checks. This patch just adds a matching entry to LogPriority so that
"silent" is now a valid level in that enum.

A previous merge of this change broke builds on Elfin because it uses
stricter compiler settings that rejected the lack of LOG_SILENT in
certain switch statements. I've gone through the codebase and found
every switch on a LogLevel variable and updated it, of which only one
affects the Android build.

Bug: 118622359
Test: CE CDM Build
Test: Android Build
Test: Android Elfin Build Specifically
Change-Id: I6ba3556e0e70f5e7e1692754a8a2f54adae59a6b
2019-03-06 11:18:55 -08:00
John Bruce
aa8d0a5d31 Revert "Add LOG_SILENT LogPriority"
This reverts commit 9a40a107f8.

Reason for revert: Elfin has stricter compiler settings than other platforms and breaks when this is checked in.

Change-Id: I169a43ff6b9d90101276690b1d3aae7865946eb0
2019-03-06 18:57:04 +00:00
John W. Bruce
9a40a107f8 Add LOG_SILENT LogPriority
(This is a merge of http://go/wvgerrit/73743)

The CE CDM implements the ability to silence all logging with a "silent"
log level. However, under the covers, this assigned a value to g_cutoff
that was not a member of LogPriority, which fails some extremely strict
checks. This patch just adds a matching entry to LogPriority so that
"silent" is now a valid level in that enum.

Bug: 118622359
Test: CE CDM Build
Test: Android Build
Change-Id: Idafb26b7c5f9a24a32c84da9b3c5595434ef07fe
2019-03-05 11:35:39 -08:00
John W. Bruce
a1b5b42d55 Add a Reader-Writer Lock
(This is a merge of http://go/wvgerrit/70666)

We need a reader-writer lock implementation in order to make use of the
new threading guarantees in OEMCrypto v15. However, we do not have
access to an STL reader-writer lock due to only being on C++11. This
patch adds a home-grown reader-writer lock, as well as tests to verify
that its behavior is sound.

Bug: 70889998
Bug: 118584039
Test: CE CDM Unit Tests
Test: Android Unit Tests
Change-Id: Iaddcefb50e72452fbd27d04879eacf775484e675
2019-01-29 13:41:38 -08:00
John W. Bruce
777abaef01 Add some platform abstractions.
(This is a merge of http://go/wvgerrit/70303)

This adds a platform.h file to abstract some of the differences
between Windows and POSIX platforms.  This includes ntohl, setenv,
and ssize_t.

Bug: 122953649
Test: Android Unit Tests
Change-Id: I3235f3f284b53d24d7365ff3f4a06dcd9b403697
2019-01-16 11:06:55 -08:00
Fred Gylys-Colwell
17932a63fd Change from custom Lock to std::mutex.
Rest of merge of http://go/wvgerrit/67884
Some files were deleted on original CL that were not deleted here.

Now that we can use C++11, we should use the cross-platform std::mutex
type, not the custom pthread version.

Bug: 111850982
Test: WV unit/integration tests
Change-Id: I48a1e47aa79e5e66b5869c0f766c18d561d26784
2018-12-19 12:06:21 -08:00
Rahul Frias
e22d0ab48c Only export public symbols.
[ Merge of http://go/wvgerrit/67923 ]

Before, all symbols were being exported in the dynamic library.  Now
only the public symbols are.  This no longer has the unit tests load
the dynamic library, so we lose testing the dynamic integration; but
the unit tests use a lot of internals, even the top-level CDM ones.

Bug: 69271232
Bug: 69548115
Test: WV unit/integration tests
Change-Id: I62919937277ec785aca1f8b36b28caa2f9d8f3ea
2018-12-13 11:56:02 -08:00
Srujan Gaddam
896ce2b5aa Refactor file_store to use smart pointers
Bug: b/119276649
Merge from: http://go/wvgerrit/66367
Test: Android, CE CDM, Linux unit tests

The FileSystem interface as it exists expects an Open for a file and
then a Close when finished. However, the Close doesn't delete the file
itself and depending on the platform, the underlying impl_ as well,
leading to a memory leak. To fix this leak as well as harden against
future memory issues, this change refactors the interface to shift away
from raw pointers and towards smart pointers.

Change-Id: I7a7132ea95cd3775796a540f510b698f4f27dd24
2018-11-30 16:25:58 -08:00
Srujan Gaddam
e6439255ba Update OEMCrypto calls to use substrings
Merge from master branch of Widevine repo of http://go/wvgerrit/66073
Merge from oemcrypto-v15 branch of Widevine repo of http://go/wvgerrit/64083

As part of the update to v15, LoadKeys, RefreshKeys, and
LoadEntitledContentKeys should all use offsets and lengths into the
message rather than a pointer for its parameters. The CDM, tests,
adapters, and OEMCrypto implementations are changed to reflect this.

Test: tested as part of http://go/ag/5501993
Bug: 115874964

Change-Id: I981fa322dec7c565066fd163ca5775dbff71fccf
2018-11-16 17:14:00 -08:00
Fred Gylys-Colwell
60d010d18d Address review comments
Merge from Widevine repo of http://go/wvgerrit/54540

Addressing comments in http://go/ag/4448747

Test: tested as part of http://go/ag/4674759
Change-Id: I29005397efcc2e982e635581cc68c8293cea6243
2018-09-09 11:37:48 -07:00
Fred Gylys-Colwell
947531a6a9 Refactor oemcrypto mock into stand alone reference code
Merge from Widevine repo of http://go/wvgerrit/46204
Refactor utility code - split the mock, step 1

Merge from Widevine repo of http://go/wvgerrit/46205
Move some OEMCrypto types to common header - split the mock, step 2

Merge from Widevine repo of http://go/wvgerrit/46206
Split mock into two -- step 3

Merge from Widevine repo of http://go/wvgerrit/47460
Split the mock into two -- step 3.5

The CL moves several files used by oemcrypto and cdm into a common
subdirectory, so that it may more easily be shared with partners.

The CORE_DISALLOW_COPY_AND_ASSIGN macro was moved to its own header in
the util/include directory.

This CL removes some references to the mock from other code, and puts
some constants and types, such as the definition of the keybox, into a
header in oemcrypto.

Test: tested as part of http://go/ag/4674759
bug: 76393338
Change-Id: I75b4bde7062ed8ee572c97ebc2f4da018f4be0c9
2018-09-02 11:45:16 -07:00