Initial Clear Key DRM Engine

Adds the initial pieces of a sample DRM Engine that accepts keys in the clear through the decrypt call instead of using the DrmClientPlugin and its key ladder. This is to help unblock teams writing code that consumes DRM Engines while Widevine continues working their real DRM engine. This is based on the in-progress Widevine DRM Engine. This change contains the DRM Engine glue pieces (.so entry point, DrmPluginFactory, etc.) and a CryptoPlugin implementation. However, said CryptoPlugin will not work until an implementation of OEMCrypto is provided in a future checkin and the CryptoPlugin is hooked up to it. For ease of loading, this library also implements the old CryptoFactory interface and entry point. If asked to create a CryptoPlugin with no data, it will defer to the old Widevine Crypto Plugin. Change-Id: I0bfbec7e32439a50a2956488dd970284f0075e61
2012-12-10 13:54:43 -08:00
parent d5aa1e41d3
commit 04bfbb0198
18 changed files with 1546 additions and 0 deletions
--- a/libclearkeydrmengine/test/WVDrmPluginFactory_test.cpp
+++ b/libclearkeydrmengine/test/WVDrmPluginFactory_test.cpp
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2012 Google Inc. All Rights Reserved.
+ */
+
+#include "utils/UniquePtr.h"
+#include "WVDrmPluginFactory.h"
+#include "OEMCryptoDASH.h"
+#include "gtest/gtest.h"
+
+using namespace wvclearkey;
+
+const uint8_t kWidevineUUID[16] = {
+    0xED,0xEF,0x8B,0xA9,0x79,0xD6,0x4A,0xCE,
+    0xA3,0xC8,0x27,0xDC,0xD5,0x1D,0x21,0xED
+};
+
+const uint8_t kOldNetflixWidevineUUID[16] = {
+    0x29,0x70,0x1F,0xE4,0x3C,0xC7,0x4A,0x34,
+    0x8C,0x5B,0xAE,0x90,0xC7,0x43,0x9A,0x47
+};
+
+const uint8_t kUnknownUUID[16] = {
+    0x6A,0x7F,0xAA,0xB0,0x83,0xC7,0x9E,0x20,
+    0x08,0xBC,0xEF,0x32,0x34,0x1A,0x9A,0x26
+};
+
+TEST(WVDrmPluginFactoryTest, SupportsSupportedCryptoSchemes) {
+    UniquePtr<WVDrmPluginFactory> factory = new WVDrmPluginFactory();
+
+    EXPECT_TRUE(factory->isCryptoSchemeSupported(kWidevineUUID)) <<
+        "WVDrmPluginFactory does not support Widevine's UUID";
+
+    EXPECT_TRUE(factory->isCryptoSchemeSupported(kOldNetflixWidevineUUID)) <<
+        "WVDrmPluginFactory does not support the old Netflix Widevine UUID";
+}
+
+TEST(WVDrmPluginFactoryTest, DoesNotSupportUnsupportedCryptoSchemes) {
+    UniquePtr<WVDrmPluginFactory> factory = new WVDrmPluginFactory();
+
+    EXPECT_FALSE(factory->isCryptoSchemeSupported(kUnknownUUID)) <<
+        "WVDrmPluginFactory incorrectly claims to support an unknown UUID";
+}
+
+TEST(WVDrmPluginFactoryTest, CreatesCryptoPlugins) {
+    UniquePtr<WVDrmPluginFactory> factory = new WVDrmPluginFactory();
+    UniquePtr<android::CryptoPlugin> plugin;
+
+    status_t result = factory->createCryptoPlugin(kWidevineUUID, NULL, 0, &plugin);
+
+    EXPECT_EQ(android::OK, result) <<
+        "WVDrmPluginFactory returned error from createCryptoPlugin()";
+    EXPECT_NE((android::CryptoPlugin *)NULL, plugin) <<
+        "WVDrmPluginFactory's createCryptoPlugin() did not create a plugin";
+}
+
+TEST(WVDrmPluginFactoryTest, DoesNotCreateDrmClientPlugins) {
+    UniquePtr<WVDrmPluginFactory> factory = new WVDrmPluginFactory();
+    UniquePtr<android::DrmClientPlugin> plugin;
+
+    status_t result = factory->createDrmClientPlugin(kWidevineUUID, NULL, 0, &plugin);
+
+    EXPECT_EQ(-EPERM, result) <<
+        "WVDrmPluginFactory did not indicate that createDrmClientPlugin() is not implemented";
+    EXPECT_EQ((android::DrmClientPlugin *)NULL, plugin) <<
+        "WVDrmPluginFactory's createDrmClientPlugin() created a plugin (?!?)";
+}
+
+TEST(WVDrmPluginFactoryTest, RefusesToCreateWithUnsupportedCryptoScheme) {
+    UniquePtr<WVDrmPluginFactory> factory = new WVDrmPluginFactory();
+    UniquePtr<android::CryptoPlugin> cryptoPlugin;
+    UniquePtr<android::DrmClientPlugin> drmClientPlugin;
+    status_t result;
+
+    result = factory->createCryptoPlugin(kUnknownUUID, NULL, 0, &cryptoPlugin);
+    EXPECT_EQ(android::BAD_VALUE, result) <<
+        "WVDrmPluginFactory did not reject unknown UUID when creating a CryptoPlugin";
+    EXPECT_EQ((android::CryptoPlugin *)NULL, cryptoPlugin) <<
+        "WVDrmPluginFactory created a CryptoPlugin despite having an unknown UUID";
+
+    result = factory->createDrmClientPlugin(kUnknownUUID, NULL, 0, &drmClientPlugin);
+    EXPECT_EQ(android::BAD_VALUE, result) <<
+        "WVDrmPluginFactory did not reject unknown UUID when creating a DrmClientPlugin";
+    EXPECT_EQ((android::DrmClientPlugin *)NULL, drmClientPlugin) <<
+        "WVDrmPluginFactory created a DrmClientPlugin despite having an unknown UUID";
+}
+
+bool oemCryptoInitialized;
+bool oemCryptoTerminated;
+
+extern "C" {
+    OEMCryptoResult OEMCrypto_Initialize(void) {
+        oemCryptoInitialized = true;
+        return OEMCrypto_SUCCESS;
+    }
+
+    OEMCryptoResult OEMCrypto_Terminate(void) {
+        oemCryptoTerminated = true;
+        return OEMCrypto_SUCCESS;
+    }
+
+}
+
+TEST(WVDrmPluginFactoryTest, CallsOemCrypto) {
+    oemCryptoInitialized = false;
+    oemCryptoTerminated = false;
+
+    WVDrmPluginFactory *factory = new WVDrmPluginFactory();
+
+    EXPECT_EQ(true, oemCryptoInitialized) <<
+        "WVDrmPluginFactory did not call OEMCrypto_Initialize()";
+
+    delete factory;
+
+    EXPECT_EQ(true, oemCryptoTerminated) <<
+        "WVDrmPluginFactory did not call OEMCrypto_Terminate()";
+}