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// Copyright 2013 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.
#ifndef COMPONENTS_AUTOFILL_BROWSER_WALLET_ENCRYPTION_ESCROW_CLIENT_H_
#define COMPONENTS_AUTOFILL_BROWSER_WALLET_ENCRYPTION_ESCROW_CLIENT_H_
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
#include "net/url_request/url_fetcher_delegate.h"
class GURL;
namespace net {
class URLFetcher;
class URLRequestContextGetter;
}
namespace autofill {
namespace wallet {
class EncryptionEscrowClientObserver;
class Instrument;
// EncrytionEscrowClient is responsible for making calls to the Online Wallet
// encryption and escrow backend.
class EncryptionEscrowClient : public net::URLFetcherDelegate {
public:
// |observer| must outlive |this|.
EncryptionEscrowClient(net::URLRequestContextGetter* context_getter,
EncryptionEscrowClientObserver* observer);
virtual ~EncryptionEscrowClient();
// Sends |one_time_pad|, a vector of cryptographically secure random bytes, to
// Online Wallet to be encrypted. These bytes must be generated using
// crypto/random.h.
void EncryptOneTimePad(const std::vector<uint8>& one_time_pad);
// Escrows the primary account number and card verfication number of
// |new_instrument| with Online Wallet. The escrow is keyed off of
// |obfuscated_gaia_id|.
void EscrowInstrumentInformation(const Instrument& new_instrument,
const std::string& obfuscated_gaia_id);
// Escrows the card verfication number of an existing instrument with Online
// Wallet. The escrow is keyed off of |obfuscated_gaia_id|.
void EscrowCardVerificationNumber(const std::string& card_verification_number,
const std::string& obfuscated_gaia_id);
// Cancels |request_| (if it exists).
void CancelRequest();
protected:
// Exposed for testing.
const net::URLFetcher* request() const { return request_.get(); }
private:
enum RequestType {
NO_PENDING_REQUEST,
ENCRYPT_ONE_TIME_PAD,
ESCROW_INSTRUMENT_INFORMATION,
ESCROW_CARD_VERIFICATION_NUMBER,
};
// Posts |post_body| to |url|. When the request is complete, |observer_| is
// notified of the result.
void MakeRequest(const GURL& url, const std::string& post_body);
// Performs bookkeeping tasks for any invalid requests.
void HandleMalformedResponse(net::URLFetcher* request);
// net::URLFetcherDelegate:
virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
// The context for the request. Ensures the gdToken cookie is set as a header
// in the requests to Online Wallet if it is present.
scoped_refptr<net::URLRequestContextGetter> context_getter_;
// Observer class that has its various On* methods called based on the results
// of a request to Online Wallet.
EncryptionEscrowClientObserver* const observer_;
// The current request object.
scoped_ptr<net::URLFetcher> request_;
// The type of the current request. Must be NO_PENDING_REQUEST for a request
// to be initiated as only one request may be running at a given time.
RequestType request_type_;
DISALLOW_COPY_AND_ASSIGN(EncryptionEscrowClient);
};
} // namespace wallet
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_BROWSER_WALLET_ENCRYPTION_ESCROW_CLIENT_H_
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