Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 427 insertions, 0 deletions

diff --git a/media/psshparser/PsshParser.cpp b/media/psshparser/PsshParser.cpp
new file mode 100644
index 0000000000..9a47979164
--- /dev/null
+++ b/media/psshparser/PsshParser.cpp
@@ -0,0 +1,185 @@
+/*
+ * Copyright 2015, Mozilla Foundation and contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PsshParser.h"
+
+#include <assert.h>
+#include <memory.h>
+
+#include <algorithm>
+#include <limits>
+#include <utility>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/EndianUtils.h"
+
+// Stripped down version of mp4_demuxer::ByteReader, stripped down to make it
+// easier to link into ClearKey DLL and gtest.
+class ByteReader {
+ public:
+  ByteReader(const uint8_t* aData, size_t aSize)
+      : mPtr(aData), mRemaining(aSize), mLength(aSize) {}
+
+  size_t Offset() const { return mLength - mRemaining; }
+
+  size_t Remaining() const { return mRemaining; }
+
+  size_t Length() const { return mLength; }
+
+  bool CanRead8() const { return mRemaining >= 1; }
+
+  uint8_t ReadU8() {
+    auto ptr = Read(1);
+    if (!ptr) {
+      MOZ_ASSERT(false);
+      return 0;
+    }
+    return *ptr;
+  }
+
+  bool CanRead32() const { return mRemaining >= 4; }
+
+  uint32_t ReadU32() {
+    auto ptr = Read(4);
+    if (!ptr) {
+      MOZ_ASSERT(false);
+      return 0;
+    }
+    return mozilla::BigEndian::readUint32(ptr);
+  }
+
+  const uint8_t* Read(size_t aCount) {
+    if (aCount > mRemaining) {
+      mRemaining = 0;
+      return nullptr;
+    }
+    mRemaining -= aCount;
+
+    const uint8_t* result = mPtr;
+    mPtr += aCount;
+
+    return result;
+  }
+
+  const uint8_t* Seek(size_t aOffset) {
+    if (aOffset > mLength) {
+      MOZ_ASSERT(false);
+      return nullptr;
+    }
+
+    mPtr = mPtr - Offset() + aOffset;
+    mRemaining = mLength - aOffset;
+    return mPtr;
+  }
+
+ private:
+  const uint8_t* mPtr;
+  size_t mRemaining;
+  const size_t mLength;
+};
+
+#define FOURCC(a, b, c, d) ((a << 24) + (b << 16) + (c << 8) + d)
+
+// System ID identifying the cenc v2 pssh box format; specified at:
+// https://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/cenc-format.html
+const uint8_t kSystemID[] = {0x10, 0x77, 0xef, 0xec, 0xc0, 0xb2, 0x4d, 0x02,
+                             0xac, 0xe3, 0x3c, 0x1e, 0x52, 0xe2, 0xfb, 0x4b};
+
+bool ParseCENCInitData(const uint8_t* aInitData, uint32_t aInitDataSize,
+                       std::vector<std::vector<uint8_t>>& aOutKeyIds) {
+  aOutKeyIds.clear();
+  std::vector<std::vector<uint8_t>> keyIds;
+  ByteReader reader(aInitData, aInitDataSize);
+  while (reader.CanRead32()) {
+    // Box size. For the common system Id, ignore this, as some useragents
+    // handle invalid box sizes.
+    const size_t start = reader.Offset();
+    const size_t size = reader.ReadU32();
+    if (size > std::numeric_limits<size_t>::max() - start) {
+      // Ensure 'start + size' calculation below can't overflow.
+      return false;
+    }
+    const size_t end = start + size;
+    if (end > reader.Length()) {
+      // Ridiculous sized box.
+      return false;
+    }
+
+    // PSSH box type.
+    if (!reader.CanRead32()) {
+      return false;
+    }
+    uint32_t box = reader.ReadU32();
+    if (box != FOURCC('p', 's', 's', 'h')) {
+      return false;
+    }
+
+    // 1 byte version, 3 bytes flags.
+    if (!reader.CanRead32()) {
+      return false;
+    }
+    uint8_t version = reader.ReadU8();
+    if (version != 1) {
+      // Ignore pssh boxes with wrong version.
+      reader.Seek(std::max<size_t>(reader.Offset(), end));
+      continue;
+    }
+    reader.Read(3);  // skip flags.
+
+    // SystemID
+    const uint8_t* sid = reader.Read(sizeof(kSystemID));
+    if (!sid) {
+      // Insufficient bytes to read SystemID.
+      return false;
+    }
+
+    if (memcmp(kSystemID, sid, sizeof(kSystemID))) {
+      // Ignore pssh boxes with wrong system ID.
+      reader.Seek(std::max<size_t>(reader.Offset(), end));
+      continue;
+    }
+
+    if (!reader.CanRead32()) {
+      return false;
+    }
+    uint32_t kidCount = reader.ReadU32();
+
+    if (kidCount * CENC_KEY_LEN > reader.Remaining()) {
+      // Not enough bytes remaining to read all keys.
+      return false;
+    }
+
+    for (uint32_t i = 0; i < kidCount; i++) {
+      const uint8_t* kid = reader.Read(CENC_KEY_LEN);
+      keyIds.push_back(std::vector<uint8_t>(kid, kid + CENC_KEY_LEN));
+    }
+
+    // Size of extra data. EME CENC format spec says datasize should
+    // always be 0. We explicitly read the datasize, in case the box
+    // size was 0, so that we get to the end of the box.
+    if (!reader.CanRead32()) {
+      return false;
+    }
+    reader.ReadU32();
+
+    // Jump forwards to the end of the box, skipping any padding.
+    if (size) {
+      reader.Seek(end);
+    }
+  }
+  aOutKeyIds = std::move(keyIds);
+  return true;
+}
diff --git a/media/psshparser/PsshParser.h b/media/psshparser/PsshParser.h
new file mode 100644
index 0000000000..ff216dd5d7
--- /dev/null
+++ b/media/psshparser/PsshParser.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2015, Mozilla Foundation and contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __ClearKeyCencParser_h__
+#define __ClearKeyCencParser_h__
+
+#include <stdint.h>
+#include <vector>
+
+#define CENC_KEY_LEN ((size_t)16)
+
+bool ParseCENCInitData(const uint8_t* aInitData, uint32_t aInitDataSize,
+                       std::vector<std::vector<uint8_t>>& aOutKeyIds);
+
+#endif
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));
+}
diff --git a/media/psshparser/gtest/moz.build b/media/psshparser/gtest/moz.build
new file mode 100644
index 0000000000..a7f5ef0f8e
--- /dev/null
+++ b/media/psshparser/gtest/moz.build
@@ -0,0 +1,13 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+UNIFIED_SOURCES += [
+    "TestPsshParser.cpp",
+]
+
+USE_LIBS += ["psshparser"]
+
+FINAL_LIBRARY = "xul-gtest"
diff --git a/media/psshparser/moz.build b/media/psshparser/moz.build
new file mode 100644
index 0000000000..f907f472b5
--- /dev/null
+++ b/media/psshparser/moz.build
@@ -0,0 +1,25 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+with Files("*"):
+    BUG_COMPONENT = ("Core", "Audio/Video")
+
+EXPORTS.psshparser += [
+    "PsshParser.h",
+]
+
+UNIFIED_SOURCES += [
+    "PsshParser.cpp",
+]
+
+Library("psshparser")
+
+DisableStlWrapping()
+DEFINES["MOZ_NO_MOZALLOC"] = True
+
+TEST_DIRS += [
+    "gtest",
+]