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
2018-06-29 16:57:19 -07:00
parent b8091eaa7d
commit 947531a6a9
109 changed files with 806 additions and 1428 deletions
--- a/libwvdrmengine/oemcrypto/ref/src/oemcrypto_keybox_ref.cpp
+++ b/libwvdrmengine/oemcrypto/ref/src/oemcrypto_keybox_ref.cpp
@@ -0,0 +1,115 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+//
+//  Ref implementation of OEMCrypto APIs
+//
+#include "oemcrypto_keybox_ref.h"
+
+#include <arpa/inet.h>  // needed for ntoh()
+#include <string.h>
+#include <sys/types.h>
+#include <string>
+
+#include "log.h"
+#include "oemcrypto_types.h"
+#include "wvcrc32.h"
+
+namespace wvoec_ref {
+
+namespace {
+
+const wvoec::WidevineKeybox kTestKeybox = {
+  // Sample keybox used for test vectors
+  {
+    // deviceID
+    0x54, 0x65, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x30,  // TestKey01
+    0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // ........
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // ........
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  // ........
+  }, {
+    // key
+    0xfb, 0xda, 0x04, 0x89, 0xa1, 0x58, 0x16, 0x0e,
+    0xa4, 0x02, 0xe9, 0x29, 0xe3, 0xb6, 0x8f, 0x04,
+  }, {
+    // data
+    0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x10, 0x19,
+    0x07, 0xd9, 0xff, 0xde, 0x13, 0xaa, 0x95, 0xc1,
+    0x22, 0x67, 0x80, 0x53, 0x36, 0x21, 0x36, 0xbd,
+    0xf8, 0x40, 0x8f, 0x82, 0x76, 0xe4, 0xc2, 0xd8,
+    0x7e, 0xc5, 0x2b, 0x61, 0xaa, 0x1b, 0x9f, 0x64,
+    0x6e, 0x58, 0x73, 0x49, 0x30, 0xac, 0xeb, 0xe8,
+    0x99, 0xb3, 0xe4, 0x64, 0x18, 0x9a, 0x14, 0xa8,
+    0x72, 0x02, 0xfb, 0x02, 0x57, 0x4e, 0x70, 0x64,
+    0x0b, 0xd2, 0x2e, 0xf4, 0x4b, 0x2d, 0x7e, 0x39,
+  }, {
+    // magic
+    0x6b, 0x62, 0x6f, 0x78,
+  }, {
+    // Crc
+    0x0a, 0x7a, 0x2c, 0x35,
+  }
+};
+
+}  // namespace
+
+WvKeybox::WvKeybox() {
+  valid_ = Prepare();
+}
+
+KeyboxError WvKeybox::Validate() {
+  if (!valid_) {
+    LOGE("[KEYBOX NOT LOADED]");
+    return OTHER_ERROR;
+  }
+  if (strncmp(reinterpret_cast<char*>(magic_), "kbox", 4) != 0) {
+    LOGE("[KEYBOX HAS BAD MAGIC]");
+    return BAD_MAGIC;
+  }
+  uint32_t crc_computed;
+  uint32_t crc_stored;
+  uint8_t* crc_stored_bytes = (uint8_t*) &crc_stored;
+  memcpy(crc_stored_bytes, crc_, sizeof(crc_));
+  wvoec::WidevineKeybox keybox;
+  memset(&keybox, 0, sizeof(keybox));
+  memcpy(keybox.device_id_, &device_id_[0], device_id_.size());
+  memcpy(keybox.device_key_, &device_key_[0], sizeof(keybox.device_key_));
+  memcpy(keybox.data_, key_data_, sizeof(keybox.data_));
+  memcpy(keybox.magic_, magic_, sizeof(keybox.magic_));
+
+  crc_computed = ntohl(wvcrc32(reinterpret_cast<uint8_t*>(&keybox),
+                               sizeof(keybox) - 4));  // Drop last 4 bytes.
+  if (crc_computed != crc_stored) {
+    LOGE("[KEYBOX CRC problem: computed = %08x,  stored = %08x]\n",
+         crc_computed, crc_stored);
+    return BAD_CRC;
+  }
+  return NO_ERROR;
+}
+
+bool WvKeybox::InstallKeybox(const uint8_t* buffer, size_t keyBoxLength) {
+  if (keyBoxLength != 128) {
+    return false;
+  }
+
+  const wvoec::WidevineKeybox* keybox
+    = reinterpret_cast<const wvoec::WidevineKeybox*>(buffer);
+  size_t device_id_length
+      = strnlen(reinterpret_cast<const char*>(keybox->device_id_), 32);
+  device_id_.assign(keybox->device_id_,
+                    keybox->device_id_ + device_id_length);
+  device_key_.assign(keybox->device_key_,
+                     keybox->device_key_ + sizeof(keybox->device_key_));
+  memcpy(key_data_, keybox->data_, sizeof(keybox->data_));
+  memcpy(magic_, keybox->magic_, sizeof(keybox->magic_));
+  memcpy(crc_, keybox->crc_, sizeof(keybox->crc_));
+
+  return true;
+}
+
+WvTestKeybox::WvTestKeybox() {
+  InstallKeybox(reinterpret_cast<const uint8_t*>(&kTestKeybox),
+                sizeof(kTestKeybox));
+}
+
+}  // namespace wvoec_ref