1 files changed, 176 insertions, 0 deletions
diff --git a/media/psshparser/gtest/TestPsshParser.cpp b/media/psshparser/gtest/TestPsshParser.cpp
new file mode 100644
index 0000000000..2027090a1f
--- /dev/null
+++ b/media/psshparser/gtest/TestPsshParser.cpp
@@ -0,0 +1,176 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include <algorithm>
+#include <stdint.h>
+#include <vector>
+
+#include "psshparser/PsshParser.h"
+#include "mozilla/ArrayUtils.h"
+
+using namespace std;
+
+// This is the CENC initData from Google's web-platform tests.
+// https://github.com/w3c/web-platform-tests/blob/master/encrypted-media/Google/encrypted-media-utils.js#L50
+const uint8_t gGoogleWPTCencInitData[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x00,                          // size = 0
+  0x70, 0x73, 0x73, 0x68,                          // 'pssh'
+  0x01,                                            // version = 1
+  0x00, 0x00, 0x00,                                // flags
+  0x10, 0x77, 0xEF, 0xEC, 0xC0, 0xB2, 0x4D, 0x02,  // Common SystemID
+  0xAC, 0xE3, 0x3C, 0x1E, 0x52, 0xE2, 0xFB, 0x4B,
+  0x00, 0x00, 0x00, 0x01,                          // key count
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,  // key
+  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+  0x00, 0x00, 0x00, 0x00                           // datasize
+    // clang-format on
+};
+
+// Example CENC initData from the EME spec format registry:
+// https://w3c.github.io/encrypted-media/format-registry/initdata/cenc.html
+const uint8_t gW3SpecExampleCencInitData[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x44, 0x70, 0x73, 0x73, 0x68, // BMFF box header (68 bytes, 'pssh')
+  0x01, 0x00, 0x00, 0x00,                         // Full box header (version = 1, flags = 0)
+  0x10, 0x77, 0xef, 0xec, 0xc0, 0xb2, 0x4d, 0x02, // SystemID
+  0xac, 0xe3, 0x3c, 0x1e, 0x52, 0xe2, 0xfb, 0x4b,
+  0x00, 0x00, 0x00, 0x02,                         // KID_count (2)
+  0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // First KID ("0123456789012345")
+  0x38, 0x39, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+  0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // Second KID ("ABCDEFGHIJKLMNOP")
+  0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
+  0x00, 0x00, 0x00, 0x00                         // Size of Data (0)
+    // clang-format on
+};
+
+// Invalid box size, would overflow if used.
+const uint8_t gOverflowBoxSize[] = {
+    0xff, 0xff, 0xff, 0xff,  // size = UINT32_MAX
+};
+
+// Valid box size, but key count too large.
+const uint8_t gTooLargeKeyCountInitData[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x34,                          // size = too big a number
+  0x70, 0x73, 0x73, 0x68,                          // 'pssh'
+  0x01,                                            // version = 1
+  0xff, 0xff, 0xff,                                // flags
+  0x10, 0x77, 0xEF, 0xEC, 0xC0, 0xB2, 0x4D, 0x02,  // Common SystemID
+  0xAC, 0xE3, 0x3C, 0x1E, 0x52, 0xE2, 0xFB, 0x4B,
+  0xff, 0xff, 0xff, 0xff,                          // key count = UINT32_MAX
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // key
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff                           // datasize
+    // clang-format on
+};
+
+// Non common SystemID PSSH.
+// No keys Ids can be extracted, but don't consider the box invalid.
+const uint8_t gNonCencInitData[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x5c,                          // size = 92
+  0x70, 0x73, 0x73, 0x68,                          // 'pssh'
+  0x01,                                            // version = 1
+  0x00, 0x00, 0x00,                                // flags
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // Invalid SystemID
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,  // Some data to pad out the box.
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    // clang-format on
+};
+
+const uint8_t gNonPSSHBoxZeroSize[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x00,                          // size = 0
+  0xff, 0xff, 0xff, 0xff,                          // something other than 'pssh'
+    // clang-format on
+};
+
+// Two lots of the google init data. To ensure we handle
+// multiple boxes with size 0.
+const uint8_t g2xGoogleWPTCencInitData[] = {
+    // clang-format off
+  0x00, 0x00, 0x00, 0x00,                          // size = 0
+  0x70, 0x73, 0x73, 0x68,                          // 'pssh'
+  0x01,                                            // version = 1
+  0x00, 0x00, 0x00,                                // flags
+  0x10, 0x77, 0xEF, 0xEC, 0xC0, 0xB2, 0x4D, 0x02,  // Common SystemID
+  0xAC, 0xE3, 0x3C, 0x1E, 0x52, 0xE2, 0xFB, 0x4B,
+  0x00, 0x00, 0x00, 0x01,                          // key count
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,  // key
+  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+  0x00, 0x00, 0x00, 0x00,                          // datasize
+
+  0x00, 0x00, 0x00, 0x00,                          // size = 0
+  0x70, 0x73, 0x73, 0x68,                          // 'pssh'
+  0x01,                                            // version = 1
+  0x00, 0x00, 0x00,                                // flags
+  0x10, 0x77, 0xEF, 0xEC, 0xC0, 0xB2, 0x4D, 0x02,  // Common SystemID
+  0xAC, 0xE3, 0x3C, 0x1E, 0x52, 0xE2, 0xFB, 0x4B,
+  0x00, 0x00, 0x00, 0x01,                          // key count
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,  // key
+  0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+  0x00, 0x00, 0x00, 0x00                           // datasize
+    // clang-format on
+};
+
+TEST(PsshParser, ParseCencInitData)
+{
+  std::vector<std::vector<uint8_t>> keyIds;
+  bool rv;
+
+  rv = ParseCENCInitData(gGoogleWPTCencInitData,
+                         MOZ_ARRAY_LENGTH(gGoogleWPTCencInitData), keyIds);
+  EXPECT_TRUE(rv);
+  EXPECT_EQ(1u, keyIds.size());
+  EXPECT_EQ(16u, keyIds[0].size());
+  EXPECT_EQ(0, memcmp(&keyIds[0].front(), &gGoogleWPTCencInitData[32], 16));
+
+  rv = ParseCENCInitData(gW3SpecExampleCencInitData,
+                         MOZ_ARRAY_LENGTH(gW3SpecExampleCencInitData), keyIds);
+  EXPECT_TRUE(rv);
+  EXPECT_EQ(2u, keyIds.size());
+  EXPECT_EQ(16u, keyIds[0].size());
+  EXPECT_EQ(0, memcmp(&keyIds[0].front(), &gW3SpecExampleCencInitData[32], 16));
+  EXPECT_EQ(0, memcmp(&keyIds[1].front(), &gW3SpecExampleCencInitData[48], 16));
+
+  rv = ParseCENCInitData(gOverflowBoxSize, MOZ_ARRAY_LENGTH(gOverflowBoxSize),
+                         keyIds);
+  EXPECT_FALSE(rv);
+  EXPECT_EQ(0u, keyIds.size());
+
+  rv = ParseCENCInitData(gTooLargeKeyCountInitData,
+                         MOZ_ARRAY_LENGTH(gTooLargeKeyCountInitData), keyIds);
+  EXPECT_FALSE(rv);
+  EXPECT_EQ(0u, keyIds.size());
+
+  rv = ParseCENCInitData(gNonCencInitData, MOZ_ARRAY_LENGTH(gNonCencInitData),
+                         keyIds);
+  EXPECT_TRUE(rv);
+  EXPECT_EQ(0u, keyIds.size());
+
+  rv = ParseCENCInitData(gNonPSSHBoxZeroSize,
+                         MOZ_ARRAY_LENGTH(gNonPSSHBoxZeroSize), keyIds);
+  EXPECT_FALSE(rv);
+  EXPECT_EQ(0u, keyIds.size());
+
+  rv = ParseCENCInitData(g2xGoogleWPTCencInitData,
+                         MOZ_ARRAY_LENGTH(g2xGoogleWPTCencInitData), keyIds);
+  EXPECT_TRUE(rv);
+  EXPECT_EQ(2u, keyIds.size());
+  EXPECT_EQ(16u, keyIds[0].size());
+  EXPECT_EQ(16u, keyIds[1].size());
+  EXPECT_EQ(0, memcmp(&keyIds[0].front(), &g2xGoogleWPTCencInitData[32], 16));
+  EXPECT_EQ(0, memcmp(&keyIds[1].front(), &g2xGoogleWPTCencInitData[84], 16));
+}