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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 "third_party/blink/renderer/modules/push_messaging/push_subscription_options.h"
#include "third_party/blink/public/platform/modules/push_messaging/web_push_subscription_options.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/modules/push_messaging/push_subscription_options_init.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/wtf/ascii_ctype.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
namespace {
const int kMaxApplicationServerKeyLength = 255;
String BufferSourceToString(
const ArrayBufferOrArrayBufferView& application_server_key,
ExceptionState& exception_state) {
unsigned char* input;
int length;
// Convert the input array into a string of bytes.
if (application_server_key.IsArrayBuffer()) {
input = static_cast<unsigned char*>(
application_server_key.GetAsArrayBuffer()->Data());
length = application_server_key.GetAsArrayBuffer()->ByteLength();
} else if (application_server_key.IsArrayBufferView()) {
input = static_cast<unsigned char*>(
application_server_key.GetAsArrayBufferView().View()->buffer()->Data());
length = application_server_key.GetAsArrayBufferView()
.View()
->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 is_vapid = length == 65 && *input == 0x04;
const bool is_sender_id =
length > 0 && length < kMaxApplicationServerKeyLength &&
(std::find_if_not(input, input + length,
&WTF::IsASCIIDigit<unsigned char>) == input + length);
if (is_vapid || is_sender_id)
return WebString::FromLatin1(input, length);
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidAccessError,
"The provided applicationServerKey is not valid.");
return String();
}
} // namespace
// static
WebPushSubscriptionOptions PushSubscriptionOptions::ToWeb(
const PushSubscriptionOptionsInit& options,
ExceptionState& exception_state) {
WebPushSubscriptionOptions web_options;
web_options.user_visible_only = options.userVisibleOnly();
if (options.hasApplicationServerKey())
web_options.application_server_key =
BufferSourceToString(options.applicationServerKey(), exception_state);
return web_options;
}
PushSubscriptionOptions::PushSubscriptionOptions(
const WebPushSubscriptionOptions& options)
: user_visible_only_(options.user_visible_only),
application_server_key_(
DOMArrayBuffer::Create(options.application_server_key.Latin1().data(),
options.application_server_key.length())) {}
void PushSubscriptionOptions::Trace(blink::Visitor* visitor) {
visitor->Trace(application_server_key_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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