bindings: fixed incorrect dependency of SerializedScriptValue.

Source/bindings/modules/v8/ScriptValueSerializerForModules.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "bindings/modules/v8/ScriptValueSerializerForModules.h"
+
+#include "bindings/core/v8/SerializationTag.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/modules/v8/V8CryptoKey.h"
+#include "bindings/modules/v8/V8DOMFileSystem.h"
+#include "modules/filesystem/DOMFileSystem.h"
+#include "public/platform/Platform.h"
+
+namespace blink {
+
+enum CryptoKeyAlgorithmTag {
+    AesCbcTag = 1,
+    HmacTag = 2,
+    RsaSsaPkcs1v1_5Tag = 3,
+    // ID 4 was used by RsaEs, while still behind experimental flag.
+    Sha1Tag = 5,
+    Sha256Tag = 6,
+    Sha384Tag = 7,
+    Sha512Tag = 8,
+    AesGcmTag = 9,
+    RsaOaepTag = 10,
+    AesCtrTag = 11,
+    AesKwTag = 12,
+    RsaPssTag = 13,
+    EcdsaTag = 14,
+    // Maximum allowed value is 2^32-1
+};
+
+enum NamedCurveTag {
+    P256Tag = 1,
+    P384Tag = 2,
+    P521Tag = 3,
+};
+
+enum CryptoKeyUsage {
+    // Extractability is not a "usage" in the WebCryptoKeyUsages sense, however
+    // it fits conveniently into this bitfield.
+    ExtractableUsage = 1 << 0,
+
+    EncryptUsage = 1 << 1,
+    DecryptUsage = 1 << 2,
+    SignUsage = 1 << 3,
+    VerifyUsage = 1 << 4,
+    DeriveKeyUsage = 1 << 5,
+    WrapKeyUsage = 1 << 6,
+    UnwrapKeyUsage = 1 << 7,
+    DeriveBitsUsage = 1 << 8,
+    // Maximum allowed value is 1 << 31
+};
+
+enum CryptoKeySubTag {
+    AesKeyTag = 1,
+    HmacKeyTag = 2,
+    // ID 3 was used by RsaKeyTag, while still behind experimental flag.
+    RsaHashedKeyTag = 4,
+    EcKeyTag = 5,
+    // Maximum allowed value is 255
+};
+
+enum AssymetricCryptoKeyType {
+    PublicKeyType = 1,
+    PrivateKeyType = 2,
+    // Maximum allowed value is 2^32-1
+};
+
+
+ScriptValueSerializerForModules::ScriptValueSerializerForModules(SerializedScriptValueWriter& writer, MessagePortArray* messagePorts, ArrayBufferArray* arrayBuffers, WebBlobInfoArray* blobInfo, BlobDataHandleMap& blobDataHandles, v8::TryCatch& tryCatch, ScriptState* scriptState)
+    : ScriptValueSerializer(writer, messagePorts, arrayBuffers, blobInfo, blobDataHandles, tryCatch, scriptState)
+{
+}
+
+ScriptValueSerializer::StateBase* ScriptValueSerializerForModules::writeDOMFileSystem(v8::Handle<v8::Value> value, ScriptValueSerializer::StateBase* next)
+{
+    DOMFileSystem* fs = V8DOMFileSystem::toImpl(value.As<v8::Object>());
+    if (!fs)
+        return 0;
+    if (!fs->clonable())
+        return handleError(DataCloneError, "A FileSystem object could not be cloned.", next);
+
+    toSerializedScriptValueWriterForModules(writer()).writeDOMFileSystem(fs->type(), fs->name(), fs->rootURL().string());
+    return 0;
+}
+
+bool ScriptValueSerializerForModules::writeCryptoKey(v8::Handle<v8::Value> value)
+{
+    CryptoKey* key = V8CryptoKey::toImpl(value.As<v8::Object>());
+    if (!key)
+        return false;
+    return toSerializedScriptValueWriterForModules(writer()).writeCryptoKey(key->key());
+}
+
+void SerializedScriptValueWriterForModules::writeDOMFileSystem(int type, const String& name, const String& url)
+{
+    append(DOMFileSystemTag);
+    doWriteUint32(type);
+    doWriteWebCoreString(name);
+    doWriteWebCoreString(url);
+}
+
+bool SerializedScriptValueWriterForModules::writeCryptoKey(const WebCryptoKey& key)
+{
+    append(static_cast<uint8_t>(CryptoKeyTag));
+
+    switch (key.algorithm().paramsType()) {
+    case WebCryptoKeyAlgorithmParamsTypeAes:
+        doWriteAesKey(key);
+        break;
+    case WebCryptoKeyAlgorithmParamsTypeHmac:
+        doWriteHmacKey(key);
+        break;
+    case WebCryptoKeyAlgorithmParamsTypeRsaHashed:
+        doWriteRsaHashedKey(key);
+        break;
+    case WebCryptoKeyAlgorithmParamsTypeEc:
+        doWriteEcKey(key);
+        break;
+    case WebCryptoKeyAlgorithmParamsTypeNone:
+        ASSERT_NOT_REACHED();
+        return false;
+    }
+
+    doWriteKeyUsages(key.usages(), key.extractable());
+
+    WebVector<uint8_t> keyData;
+    if (!Platform::current()->crypto()->serializeKeyForClone(key, keyData))
+        return false;
+
+    doWriteUint32(keyData.size());
+    append(keyData.data(), keyData.size());
+    return true;
+}
+
+void SerializedScriptValueWriterForModules::doWriteHmacKey(const WebCryptoKey& key)
+{
+    ASSERT(key.algorithm().paramsType() == WebCryptoKeyAlgorithmParamsTypeHmac);
+
+    append(static_cast<uint8_t>(HmacKeyTag));
+    ASSERT(!(key.algorithm().hmacParams()->lengthBits() % 8));
+    doWriteUint32(key.algorithm().hmacParams()->lengthBits() / 8);
+    doWriteAlgorithmId(key.algorithm().hmacParams()->hash().id());
+}
+
+void SerializedScriptValueWriterForModules::doWriteAesKey(const WebCryptoKey& key)
+{
+    ASSERT(key.algorithm().paramsType() == WebCryptoKeyAlgorithmParamsTypeAes);
+
+    append(static_cast<uint8_t>(AesKeyTag));
+    doWriteAlgorithmId(key.algorithm().id());
+    // Converting the key length from bits to bytes is lossless and makes
+    // it fit in 1 byte.
+    ASSERT(!(key.algorithm().aesParams()->lengthBits() % 8));
+    doWriteUint32(key.algorithm().aesParams()->lengthBits() / 8);
+}
+
+void SerializedScriptValueWriterForModules::doWriteRsaHashedKey(const WebCryptoKey& key)
+{
+    ASSERT(key.algorithm().rsaHashedParams());
+    append(static_cast<uint8_t>(RsaHashedKeyTag));
+
+    doWriteAlgorithmId(key.algorithm().id());
+    doWriteAsymmetricKeyType(key.type());
+
+    const WebCryptoRsaHashedKeyAlgorithmParams* params = key.algorithm().rsaHashedParams();
+    doWriteUint32(params->modulusLengthBits());
+    doWriteUint32(params->publicExponent().size());
+    append(params->publicExponent().data(), params->publicExponent().size());
+    doWriteAlgorithmId(params->hash().id());
+}
+
+void SerializedScriptValueWriterForModules::doWriteEcKey(const WebCryptoKey& key)
+{
+    ASSERT(key.algorithm().ecParams());
+    append(static_cast<uint8_t>(EcKeyTag));
+
+    doWriteAlgorithmId(key.algorithm().id());
+    doWriteAsymmetricKeyType(key.type());
+    doWriteNamedCurve(key.algorithm().ecParams()->namedCurve());
+}
+
+void SerializedScriptValueWriterForModules::doWriteAlgorithmId(WebCryptoAlgorithmId id)
+{
+    switch (id) {
+    case WebCryptoAlgorithmIdAesCbc:
+        return doWriteUint32(AesCbcTag);
+    case WebCryptoAlgorithmIdHmac:
+        return doWriteUint32(HmacTag);
+    case WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
+        return doWriteUint32(RsaSsaPkcs1v1_5Tag);
+    case WebCryptoAlgorithmIdSha1:
+        return doWriteUint32(Sha1Tag);
+    case WebCryptoAlgorithmIdSha256:
+        return doWriteUint32(Sha256Tag);
+    case WebCryptoAlgorithmIdSha384:
+        return doWriteUint32(Sha384Tag);
+    case WebCryptoAlgorithmIdSha512:
+        return doWriteUint32(Sha512Tag);
+    case WebCryptoAlgorithmIdAesGcm:
+        return doWriteUint32(AesGcmTag);
+    case WebCryptoAlgorithmIdRsaOaep:
+        return doWriteUint32(RsaOaepTag);
+    case WebCryptoAlgorithmIdAesCtr:
+        return doWriteUint32(AesCtrTag);
+    case WebCryptoAlgorithmIdAesKw:
+        return doWriteUint32(AesKwTag);
+    case WebCryptoAlgorithmIdRsaPss:
+        return doWriteUint32(RsaPssTag);
+    case WebCryptoAlgorithmIdEcdsa:
+        return doWriteUint32(EcdsaTag);
+    }
+    ASSERT_NOT_REACHED();
+}
+
+void SerializedScriptValueWriterForModules::doWriteAsymmetricKeyType(WebCryptoKeyType keyType)
+{
+    switch (keyType) {
+    case WebCryptoKeyTypePublic:
+        doWriteUint32(PublicKeyType);
+        break;
+    case WebCryptoKeyTypePrivate:
+        doWriteUint32(PrivateKeyType);
+        break;
+    case WebCryptoKeyTypeSecret:
+        ASSERT_NOT_REACHED();
+    }
+}
+
+void SerializedScriptValueWriterForModules::doWriteNamedCurve(WebCryptoNamedCurve namedCurve)
+{
+    switch (namedCurve) {
+    case WebCryptoNamedCurveP256:
+        return doWriteUint32(P256Tag);
+    case WebCryptoNamedCurveP384:
+        return doWriteUint32(P384Tag);
+    case WebCryptoNamedCurveP521:
+        return doWriteUint32(P521Tag);
+    }
+    ASSERT_NOT_REACHED();
+}
+
+void SerializedScriptValueWriterForModules::doWriteKeyUsages(const WebCryptoKeyUsageMask usages, bool extractable)
+{
+    // Reminder to update this when adding new key usages.
+    COMPILE_ASSERT(EndOfWebCryptoKeyUsage == (1 << 7) + 1, UpdateMe);
+
+    uint32_t value = 0;
+
+    if (extractable)
+        value |= ExtractableUsage;
+
+    if (usages & WebCryptoKeyUsageEncrypt)
+        value |= EncryptUsage;
+    if (usages & WebCryptoKeyUsageDecrypt)
+        value |= DecryptUsage;
+    if (usages & WebCryptoKeyUsageSign)
+        value |= SignUsage;
+    if (usages & WebCryptoKeyUsageVerify)
+        value |= VerifyUsage;
+    if (usages & WebCryptoKeyUsageDeriveKey)
+        value |= DeriveKeyUsage;
+    if (usages & WebCryptoKeyUsageWrapKey)
+        value |= WrapKeyUsage;
+    if (usages & WebCryptoKeyUsageUnwrapKey)
+        value |= UnwrapKeyUsage;
+    if (usages & WebCryptoKeyUsageDeriveBits)
+        value |= DeriveBitsUsage;
+
+    doWriteUint32(value);
+}
+
+ScriptValueSerializer::StateBase* ScriptValueSerializerForModules::doSerializeValue(v8::Handle<v8::Value> value, ScriptValueSerializer::StateBase* next)
+{
+    bool isDOMFileSystem = V8DOMFileSystem::hasInstance(value, isolate());
+    if (isDOMFileSystem || V8CryptoKey::hasInstance(value, isolate())) {
+        v8::Handle<v8::Object> jsObject = value.As<v8::Object>();
+        if (jsObject.IsEmpty())
+            return handleError(DataCloneError, "An object could not be cloned.", next);
+        greyObject(jsObject);
+
+        if (isDOMFileSystem)
+            return writeDOMFileSystem(value, next);
+
+        if (!writeCryptoKey(value))
+            return handleError(DataCloneError, "Couldn't serialize key data", next);
+        return 0;
+    }
+    return ScriptValueSerializer::doSerializeValue(value, next);
+}
+
+bool SerializedScriptValueReaderForModules::read(v8::Handle<v8::Value>* value, ScriptValueCompositeCreator& creator)
+{
+    SerializationTag tag;
+    if (!readTag(&tag))
+        return false;
+    switch (tag) {
+    case DOMFileSystemTag:
+        if (!readDOMFileSystem(value))
+            return false;
+        creator.pushObjectReference(*value);
+        break;
+    case CryptoKeyTag:
+        if (!readCryptoKey(value))
+            return false;
+        creator.pushObjectReference(*value);
+        break;
+    default:
+        return SerializedScriptValueReader::readWithTag(tag, value, creator);
+    }
+    return !value->IsEmpty();
+}
+
+bool SerializedScriptValueReaderForModules::readDOMFileSystem(v8::Handle<v8::Value>* value)
+{
+    uint32_t type;
+    String name;
+    String url;
+    if (!doReadUint32(&type))
+        return false;
+    if (!readWebCoreString(&name))
+        return false;
+    if (!readWebCoreString(&url))
+        return false;
+    DOMFileSystem* fs = DOMFileSystem::create(scriptState()->executionContext(), name, static_cast<FileSystemType>(type), KURL(ParsedURLString, url));
+    *value = toV8(fs, scriptState()->context()->Global(), isolate());
+    return true;
+}
+
+bool SerializedScriptValueReaderForModules::readCryptoKey(v8::Handle<v8::Value>* value)
+{
+    uint32_t rawKeyType;
+    if (!doReadUint32(&rawKeyType))
+        return false;
+
+    WebCryptoKeyAlgorithm algorithm;
+    WebCryptoKeyType type = WebCryptoKeyTypeSecret;
+
+    switch (static_cast<CryptoKeySubTag>(rawKeyType)) {
+    case AesKeyTag:
+        if (!doReadAesKey(algorithm, type))
+            return false;
+        break;
+    case HmacKeyTag:
+        if (!doReadHmacKey(algorithm, type))
+            return false;
+        break;
+    case RsaHashedKeyTag:
+        if (!doReadRsaHashedKey(algorithm, type))
+            return false;
+        break;
+    case EcKeyTag:
+        if (!doReadEcKey(algorithm, type))
+            return false;
+        break;
+    default:
+        return false;
+    }
+
+    WebCryptoKeyUsageMask usages;
+    bool extractable;
+    if (!doReadKeyUsages(usages, extractable))
+        return false;
+
+    uint32_t keyDataLength;
+    if (!doReadUint32(&keyDataLength))
+        return false;
+
+    if (position() + keyDataLength > length())
+        return false;
+
+    const uint8_t* keyData = allocate(keyDataLength);
+    WebCryptoKey key = WebCryptoKey::createNull();
+    if (!Platform::current()->crypto()->deserializeKeyForClone(
+        algorithm, type, extractable, usages, keyData, keyDataLength, key)) {
+        return false;
+    }
+
+    *value = toV8(CryptoKey::create(key), scriptState()->context()->Global(), isolate());
+    return true;
+}
+
+bool SerializedScriptValueReaderForModules::doReadHmacKey(WebCryptoKeyAlgorithm& algorithm, WebCryptoKeyType& type)
+{
+    uint32_t lengthBytes;
+    if (!doReadUint32(&lengthBytes))
+        return false;
+    WebCryptoAlgorithmId hash;
+    if (!doReadAlgorithmId(hash))
+        return false;
+    algorithm = WebCryptoKeyAlgorithm::createHmac(hash, lengthBytes * 8);
+    type = WebCryptoKeyTypeSecret;
+    return !algorithm.isNull();
+}
+
+bool SerializedScriptValueReaderForModules::doReadAesKey(WebCryptoKeyAlgorithm& algorithm, WebCryptoKeyType& type)
+{
+    WebCryptoAlgorithmId id;
+    if (!doReadAlgorithmId(id))
+        return false;
+    uint32_t lengthBytes;
+    if (!doReadUint32(&lengthBytes))
+        return false;
+    algorithm = WebCryptoKeyAlgorithm::createAes(id, lengthBytes * 8);
+    type = WebCryptoKeyTypeSecret;
+    return !algorithm.isNull();
+}
+
+bool SerializedScriptValueReaderForModules::doReadRsaHashedKey(WebCryptoKeyAlgorithm& algorithm, WebCryptoKeyType& type)
+{
+    WebCryptoAlgorithmId id;
+    if (!doReadAlgorithmId(id))
+        return false;
+
+    if (!doReadAsymmetricKeyType(type))
+        return false;
+
+    uint32_t modulusLengthBits;
+    if (!doReadUint32(&modulusLengthBits))
+        return false;
+
+    uint32_t publicExponentSize;
+    if (!doReadUint32(&publicExponentSize))
+        return false;
+
+    if (position() + publicExponentSize > length())
+        return false;
+
+    const uint8_t* publicExponent = allocate(publicExponentSize);
+    WebCryptoAlgorithmId hash;
+    if (!doReadAlgorithmId(hash))
+        return false;
+    algorithm = WebCryptoKeyAlgorithm::createRsaHashed(id, modulusLengthBits, publicExponent, publicExponentSize, hash);
+
+    return !algorithm.isNull();
+}
+
+bool SerializedScriptValueReaderForModules::doReadEcKey(WebCryptoKeyAlgorithm& algorithm, WebCryptoKeyType& type)
+{
+    WebCryptoAlgorithmId id;
+    if (!doReadAlgorithmId(id))
+        return false;
+
+    if (!doReadAsymmetricKeyType(type))
+        return false;
+
+    WebCryptoNamedCurve namedCurve;
+    if (!doReadNamedCurve(namedCurve))
+        return false;
+
+    algorithm = WebCryptoKeyAlgorithm::createEc(id, namedCurve);
+    return !algorithm.isNull();
+}
+
+bool SerializedScriptValueReaderForModules::doReadAlgorithmId(WebCryptoAlgorithmId& id)
+{
+    uint32_t rawId;
+    if (!doReadUint32(&rawId))
+        return false;
+
+    switch (static_cast<CryptoKeyAlgorithmTag>(rawId)) {
+    case AesCbcTag:
+        id = WebCryptoAlgorithmIdAesCbc;
+        return true;
+    case HmacTag:
+        id = WebCryptoAlgorithmIdHmac;
+        return true;
+    case RsaSsaPkcs1v1_5Tag:
+        id = WebCryptoAlgorithmIdRsaSsaPkcs1v1_5;
+        return true;
+    case Sha1Tag:
+        id = WebCryptoAlgorithmIdSha1;
+        return true;
+    case Sha256Tag:
+        id = WebCryptoAlgorithmIdSha256;
+        return true;
+    case Sha384Tag:
+        id = WebCryptoAlgorithmIdSha384;
+        return true;
+    case Sha512Tag:
+        id = WebCryptoAlgorithmIdSha512;
+        return true;
+    case AesGcmTag:
+        id = WebCryptoAlgorithmIdAesGcm;
+        return true;
+    case RsaOaepTag:
+        id = WebCryptoAlgorithmIdRsaOaep;
+        return true;
+    case AesCtrTag:
+        id = WebCryptoAlgorithmIdAesCtr;
+        return true;
+    case AesKwTag:
+        id = WebCryptoAlgorithmIdAesKw;
+        return true;
+    case RsaPssTag:
+        id = WebCryptoAlgorithmIdRsaPss;
+        return true;
+    case EcdsaTag:
+        id = WebCryptoAlgorithmIdEcdsa;
+        return true;
+    }
+
+    return false;
+}
+
+bool SerializedScriptValueReaderForModules::doReadAsymmetricKeyType(WebCryptoKeyType& type)
+{
+    uint32_t rawType;
+    if (!doReadUint32(&rawType))
+        return false;
+
+    switch (static_cast<AssymetricCryptoKeyType>(rawType)) {
+    case PublicKeyType:
+        type = WebCryptoKeyTypePublic;
+        return true;
+    case PrivateKeyType:
+        type = WebCryptoKeyTypePrivate;
+        return true;
+    }
+
+    return false;
+}
+
+bool SerializedScriptValueReaderForModules::doReadNamedCurve(WebCryptoNamedCurve& namedCurve)
+{
+    uint32_t rawName;
+    if (!doReadUint32(&rawName))
+        return false;
+
+    switch (static_cast<NamedCurveTag>(rawName)) {
+    case P256Tag:
+        namedCurve = WebCryptoNamedCurveP256;
+        return true;
+    case P384Tag:
+        namedCurve = WebCryptoNamedCurveP384;
+        return true;
+    case P521Tag:
+        namedCurve = WebCryptoNamedCurveP521;
+        return true;
+    }
+
+    return false;
+}
+
+bool SerializedScriptValueReaderForModules::doReadKeyUsages(WebCryptoKeyUsageMask& usages, bool& extractable)
+{
+    // Reminder to update this when adding new key usages.
+    COMPILE_ASSERT(EndOfWebCryptoKeyUsage == (1 << 7) + 1, UpdateMe);
+    const uint32_t allPossibleUsages = ExtractableUsage | EncryptUsage | DecryptUsage | SignUsage | VerifyUsage | DeriveKeyUsage | WrapKeyUsage | UnwrapKeyUsage | DeriveBitsUsage;
+
+    uint32_t rawUsages;
+    if (!doReadUint32(&rawUsages))
+        return false;
+
+    // Make sure it doesn't contain an unrecognized usage value.
+    if (rawUsages & ~allPossibleUsages)
+        return false;
+
+    usages = 0;
+
+    extractable = rawUsages & ExtractableUsage;
+
+    if (rawUsages & EncryptUsage)
+        usages |= WebCryptoKeyUsageEncrypt;
+    if (rawUsages & DecryptUsage)
+        usages |= WebCryptoKeyUsageDecrypt;
+    if (rawUsages & SignUsage)
+        usages |= WebCryptoKeyUsageSign;
+    if (rawUsages & VerifyUsage)
+        usages |= WebCryptoKeyUsageVerify;
+    if (rawUsages & DeriveKeyUsage)
+        usages |= WebCryptoKeyUsageDeriveKey;
+    if (rawUsages & WrapKeyUsage)
+        usages |= WebCryptoKeyUsageWrapKey;
+    if (rawUsages & UnwrapKeyUsage)
+        usages |= WebCryptoKeyUsageUnwrapKey;
+    if (rawUsages & DeriveBitsUsage)
+        usages |= WebCryptoKeyUsageDeriveBits;
+
+    return true;
+}
+
+ScriptValueDeserializerForModules::ScriptValueDeserializerForModules(SerializedScriptValueReaderForModules& reader, MessagePortArray* messagePorts, ArrayBufferContentsArray* arrayBufferContents)
+    : ScriptValueDeserializer(reader, messagePorts, arrayBufferContents)
+{
+}
+
+bool ScriptValueDeserializerForModules::read(v8::Local<v8::Value>* value)
+{
+    return toSerializedScriptValueReaderForModules(reader()).read(value, *this);
+}
+
+} // namespace blink