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// Copyright 2016 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 "modules/push_messaging/PushSubscriptionOptions.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/DOMArrayBuffer.h"
#include "core/dom/ExceptionCode.h"
#include "modules/push_messaging/PushSubscriptionOptionsInit.h"
#include "public/platform/WebString.h"
#include "public/platform/modules/push_messaging/WebPushSubscriptionOptions.h"
#include "third_party/WebKit/Source/wtf/ASCIICType.h"
#include "wtf/Assertions.h"
#include "wtf/text/WTFString.h"
namespace blink {
namespace {
const int kMaxApplicationServerKeyLength = 255;
String bufferSourceToString(
const ArrayBufferOrArrayBufferView& applicationServerKey,
ExceptionState& exceptionState) {
unsigned char* input;
int length;
// Convert the input array into a string of bytes.
if (applicationServerKey.isArrayBuffer()) {
input = static_cast<unsigned char*>(
applicationServerKey.getAsArrayBuffer()->data());
length = applicationServerKey.getAsArrayBuffer()->byteLength();
} else if (applicationServerKey.isArrayBufferView()) {
input = static_cast<unsigned char*>(
applicationServerKey.getAsArrayBufferView()->buffer()->data());
length =
applicationServerKey.getAsArrayBufferView()->buffer()->byteLength();
} else {
NOTREACHED();
return String();
}
// Check the validity of the sender info. It must either be a 65-byte
// uncompressed VAPID key, which has the byte 0x04 as the first byte or a
// numeric sender ID.
const bool isVapid = length == 65 && *input == 0x04;
const bool isSenderId =
length > 0 && length < kMaxApplicationServerKeyLength &&
(std::find_if_not(input, input + length,
&WTF::isASCIIDigit<unsigned char>) == input + length);
if (isVapid || isSenderId)
return WebString::fromLatin1(input, length);
exceptionState.throwDOMException(
InvalidAccessError, "The provided applicationServerKey is not valid.");
return String();
}
} // namespace
// static
WebPushSubscriptionOptions PushSubscriptionOptions::toWeb(
const PushSubscriptionOptionsInit& options,
ExceptionState& exceptionState) {
WebPushSubscriptionOptions webOptions;
webOptions.userVisibleOnly = options.userVisibleOnly();
if (options.hasApplicationServerKey())
webOptions.applicationServerKey =
bufferSourceToString(options.applicationServerKey(), exceptionState);
return webOptions;
}
PushSubscriptionOptions::PushSubscriptionOptions(
const WebPushSubscriptionOptions& options)
: m_userVisibleOnly(options.userVisibleOnly),
m_applicationServerKey(
DOMArrayBuffer::create(options.applicationServerKey.latin1().data(),
options.applicationServerKey.length())) {}
DEFINE_TRACE(PushSubscriptionOptions) {
visitor->trace(m_applicationServerKey);
}
} // namespace blink
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