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// Copyright 2015 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_CORE_BROWSER_PAYMENTS_PAYMENTS_CLIENT_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_PAYMENTS_PAYMENTS_CLIENT_H_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "components/autofill/core/browser/autofill_client.h"
#include "components/autofill/core/browser/autofill_profile.h"
#include "components/autofill/core/browser/card_unmask_delegate.h"
#include "components/autofill/core/browser/credit_card.h"
#include "google_apis/gaia/oauth2_token_service.h"
#include "net/url_request/url_fetcher_delegate.h"
class IdentityProvider;
namespace net {
class URLFetcher;
class URLRequestContextGetter;
}
namespace autofill {
namespace payments {
class PaymentsRequest;
class PaymentsClientDelegate {
public:
// The identity provider used to get OAuth2 tokens.
virtual IdentityProvider* GetIdentityProvider() = 0;
// Returns the real PAN retrieved from Payments. |real_pan| will be empty
// on failure.
virtual void OnDidGetRealPan(AutofillClient::PaymentsRpcResult result,
const std::string& real_pan) = 0;
// Returns the legal message retrieved from Payments. On failure or not
// meeting Payments's conditions for upload, |legal_message| will contain
// nullptr.
virtual void OnDidGetUploadDetails(
AutofillClient::PaymentsRpcResult result,
const base::string16& context_token,
std::unique_ptr<base::DictionaryValue> legal_message) = 0;
// Returns the result of an upload request.
virtual void OnDidUploadCard(AutofillClient::PaymentsRpcResult result) = 0;
};
// PaymentsClient issues Payments RPCs and manages responses and failure
// conditions. Only one request may be active at a time. Initiating a new
// request will cancel a pending request.
// Tests are located in
// src/components/autofill/content/browser/payments/payments_client_unittest.cc.
class PaymentsClient : public net::URLFetcherDelegate,
public OAuth2TokenService::Consumer {
public:
// The names of the fields used to send non-location elements as part of an
// address. Used in the implementation and in tests which verify that these
// values are set or not at appropriate times.
static const char kRecipientName[];
static const char kPhoneNumber[];
// A collection of the information required to make a credit card unmask
// request.
struct UnmaskRequestDetails {
UnmaskRequestDetails();
~UnmaskRequestDetails();
CreditCard card;
std::string risk_data;
CardUnmaskDelegate::UnmaskResponse user_response;
};
// A collection of the information required to make a credit card upload
// request.
struct UploadRequestDetails {
UploadRequestDetails();
UploadRequestDetails(const UploadRequestDetails& other);
~UploadRequestDetails();
CreditCard card;
base::string16 cvc;
std::vector<AutofillProfile> profiles;
base::string16 context_token;
std::string risk_data;
std::string app_locale;
};
// |context_getter| is reference counted so it has no lifetime or ownership
// requirements. |delegate| must outlive |this|. |source_url| is the url
// of the merchant page.
PaymentsClient(net::URLRequestContextGetter* context_getter,
PaymentsClientDelegate* delegate);
~PaymentsClient() override;
// Starts fetching the OAuth2 token in anticipation of future Payments
// requests. Called as an optimization, but not strictly necessary. Should
// *not* be called in advance of GetUploadDetails or UploadCard because
// identifying information should not be sent until the user has explicitly
// accepted an upload prompt.
void Prepare();
// The user has attempted to unmask a card with the given cvc.
void UnmaskCard(const UnmaskRequestDetails& request_details);
// Determine if the user meets the Payments service's conditions for upload.
// The service uses |addresses| (from which names and phone numbers are
// removed) and |app_locale| to determine which legal message to display. If
// the conditions are met, the legal message will be returned via
// OnDidGetUploadDetails.
virtual void GetUploadDetails(const std::vector<AutofillProfile>& addresses,
const std::string& app_locale);
// The user has indicated that they would like to upload a card with the given
// cvc. This request will fail server-side if a successful call to
// GetUploadDetails has not already been made.
virtual void UploadCard(const UploadRequestDetails& details);
// Cancels and clears the current |request_|.
void CancelRequest();
private:
// Initiates a Payments request using the state in |request|. If
// |authenticate| is true, ensures that an OAuth token is avialble first.
// Takes ownership of |request|.
void IssueRequest(std::unique_ptr<PaymentsRequest> request,
bool authenticate);
// net::URLFetcherDelegate:
void OnURLFetchComplete(const net::URLFetcher* source) override;
// OAuth2TokenService::Consumer implementation.
void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
const std::string& access_token,
const base::Time& expiration_time) override;
void OnGetTokenFailure(const OAuth2TokenService::Request* request,
const GoogleServiceAuthError& error) override;
// Creates |url_fetcher_| based on the current state of |request_|.
void InitializeUrlFetcher();
// Initiates a new OAuth2 token request.
void StartTokenFetch(bool invalidate_old);
// Adds the token to |url_fetcher_| and starts the request.
void SetOAuth2TokenAndStartRequest();
// The context for the request.
scoped_refptr<net::URLRequestContextGetter> context_getter_;
// Observer class that has its various On* methods called based on the results
// of a Payments request.
PaymentsClientDelegate* const delegate_; // must outlive |this|.
// The current request.
std::unique_ptr<PaymentsRequest> request_;
// The fetcher being used to issue the current request.
std::unique_ptr<net::URLFetcher> url_fetcher_;
// The current OAuth2 token request object.
std::unique_ptr<OAuth2TokenService::Request> access_token_request_;
// The OAuth2 token, or empty if not fetched.
std::string access_token_;
// True if |request_| has already retried due to a 401 response from the
// server.
bool has_retried_authorization_;
base::WeakPtrFactory<PaymentsClient> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(PaymentsClient);
};
} // namespace payments
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CORE_BROWSER_PAYMENTS_PAYMENTS_CLIENT_H_
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