blob: 80a21b02cd983ced7572dffd43f8260c4ceb5cac [file] [log] [blame]
// Copyright 2017 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 <memory>
#include <string>
#include "v8/include/v8.h"
namespace blink {
class WebLocalFrame;
namespace extensions {
class ScriptContext;
struct Message;
namespace messaging_util {
// The channel names for the sendMessage and sendRequest calls.
extern const char kSendMessageChannel[];
extern const char kSendRequestChannel[];
// Messaging-related events.
extern const char kOnMessageEvent[];
extern const char kOnMessageExternalEvent[];
extern const char kOnRequestEvent[];
extern const char kOnRequestExternalEvent[];
extern const char kOnConnectEvent[];
extern const char kOnConnectExternalEvent[];
extern const int kNoFrameId;
// Parses the message from a v8 value, returning null on failure. On error,
// will populate |error_out|.
std::unique_ptr<Message> MessageFromV8(v8::Local<v8::Context> context,
v8::Local<v8::Value> value,
std::string* error);
// Same as above, but expects a serialized JSON string instead of a value.
std::unique_ptr<Message> MessageFromJSONString(v8::Isolate* isolate,
v8::Local<v8::String> json,
std::string* error,
blink::WebLocalFrame* web_frame);
// Converts a message to a v8 value. This is expected not to fail, since it
// should only be used for messages that have been validated.
v8::Local<v8::Value> MessageToV8(v8::Local<v8::Context> context,
const Message& message);
// Extracts an integer id from |value|, including accounting for -0 (which is a
// valid integer, but is stored in V8 as a number). This will DCHECK that
// |value| is either an int32 or -0.
int ExtractIntegerId(v8::Local<v8::Value> value);
// Flags for ParseMessageOptions().
enum ParseOptionsFlags {
PARSE_FRAME_ID = 1 << 1,
struct MessageOptions {
std::string channel_name;
int frame_id = kNoFrameId;
bool include_tls_channel_id = false;
// Parses and returns the options parameter for sendMessage or connect.
// |flags| specifies additional properties to look for on the object.
MessageOptions ParseMessageOptions(v8::Local<v8::Context> context,
v8::Local<v8::Object> v8_options,
int flags);
// Parses the target from |v8_target_id|, or uses the extension associated with
// the |script_context| as a default. Returns true on success, and false on
// failure. In the case of failure, will populate |error_out| with an error
// based on the |method_name|.
bool GetTargetExtensionId(ScriptContext* script_context,
v8::Local<v8::Value> v8_target_id,
const char* method_name,
std::string* target_out,
std::string* error_out);
// Massages the sendMessage() or sendRequest() arguments into the expected
// schema. These arguments are ambiguous (could match multiple signatures), so
// we can't just rely on the normal signature parsing. Sets |arguments| to the
// result if successful; otherwise leaves |arguments| untouched. (If the massage
// is unsuccessful, our normal argument parsing code should throw a reasonable
// error.
void MassageSendMessageArguments(
v8::Isolate* isolate,
bool allow_options_argument,
std::vector<v8::Local<v8::Value>>* arguments_out);
// Returns true if the sendRequest-related properties are disabled for the given
// |script_context|.
bool IsSendRequestDisabled(ScriptContext* script_context);
} // namespace messaging_util
} // namespace extensions