blob: 1ffc3b3a9f906ff36e6d4ebc42087f418d5c95d4 [file] [log] [blame]
// 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 <memory>
#include <vector>
#include "base/callback.h"
#include "net/base/net_export.h"
#include "net/cert/internal/completion_status.h"
#include "net/cert/internal/parsed_certificate.h"
namespace net {
// Interface for looking up issuers of a certificate during path building.
// Provides a synchronous and asynchronous method for retrieving issuers, so the
// path builder can try to complete synchronously first. The caller is expected
// to call SyncGetIssuersOf first, see if it can make progress with those
// results, and if not, then fall back to calling AsyncGetIssuersOf.
// An implementations may choose to return results from either one of the Get
// methods, or from both.
class NET_EXPORT CertIssuerSource {
class NET_EXPORT Request {
Request() = default;
// Destruction of the Request cancels it.
virtual ~Request() = default;
// Retrieves the next issuer.
// If one is available it will be stored in |out_cert| and SYNC will be
// returned. GetNext should be called again to retrieve any remaining
// issuers.
// If no issuers are currently available, |out_cert| will be cleared and the
// return value will indicate if the Request is exhausted. If the return
// value is ASYNC, the |issuers_callback| that was passed to
// AsyncGetIssuersOf will be called again (unless the Request is destroyed
// first). If the return value is SYNC, the Request is complete and the
// |issuers_callback| will not be called again.
virtual CompletionStatus GetNext(
scoped_refptr<ParsedCertificate>* out_cert) = 0;
using IssuerCallback = base::Callback<void(Request*)>;
virtual ~CertIssuerSource() = default;
// Finds certificates whose Subject matches |cert|'s Issuer.
// Matches are appended to |issuers|. Any existing contents of |issuers| will
// not be modified. If the implementation does not support synchronous
// lookups, or if there are no matches, |issuers| is not modified.
virtual void SyncGetIssuersOf(const ParsedCertificate* cert,
ParsedCertificateList* issuers) = 0;
// Finds certificates whose Subject matches |cert|'s Issuer.
// If an async callback will be made |*out_req| is filled with a Request
// object which may be destroyed to cancel the callback. If the implementation
// does not support asynchronous lookups or can determine synchronously that
// it would return no results, |*out_req| will be set to nullptr.
// When matches are available or the request is complete, |issuers_callback|
// will be called with a pointer to the same Request. The Request::GetNext
// method may then be used to iterate through the retrieved issuers. Note that
// |issuers_callback| may be called multiple times. See the documentation for
// Request::GetNext for more details.
virtual void AsyncGetIssuersOf(const ParsedCertificate* cert,
const IssuerCallback& issuers_callback,
std::unique_ptr<Request>* out_req) = 0;
} // namespace net