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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
      6 #define NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/memory/scoped_ptr.h"
     12 #include "net/base/net_export.h"
     13 #include "net/quic/quic_types.h"
     14 
     15 namespace net {
     16 
     17 // ProofVerifyDetails is an abstract class that acts as a container for any
     18 // implementation specific details that a ProofVerifier wishes to return. These
     19 // details are saved in the CachedState for the origin in question.
     20 class NET_EXPORT_PRIVATE ProofVerifyDetails {
     21  public:
     22   virtual ~ProofVerifyDetails() {}
     23 
     24   // Returns an new ProofVerifyDetails object with the same contents
     25   // as this one.
     26   virtual ProofVerifyDetails* Clone() const = 0;
     27 };
     28 
     29 // ProofVerifyContext is an abstract class that acts as a container for any
     30 // implementation specific context that a ProofVerifier needs.
     31 class NET_EXPORT_PRIVATE ProofVerifyContext {
     32  public:
     33   virtual ~ProofVerifyContext() {}
     34 };
     35 
     36 // ProofVerifierCallback provides a generic mechanism for a ProofVerifier to
     37 // call back after an asynchronous verification.
     38 class NET_EXPORT_PRIVATE ProofVerifierCallback {
     39  public:
     40   virtual ~ProofVerifierCallback() {}
     41 
     42   // Run is called on the original thread to mark the completion of an
     43   // asynchonous verification. If |ok| is true then the certificate is valid
     44   // and |error_details| is unused. Otherwise, |error_details| contains a
     45   // description of the error. |details| contains implementation-specific
     46   // details of the verification. |Run| may take ownership of |details| by
     47   // calling |release| on it.
     48   virtual void Run(bool ok,
     49                    const std::string& error_details,
     50                    scoped_ptr<ProofVerifyDetails>* details) = 0;
     51 };
     52 
     53 // A ProofVerifier checks the signature on a server config, and the certificate
     54 // chain that backs the public key.
     55 class NET_EXPORT_PRIVATE ProofVerifier {
     56  public:
     57   virtual ~ProofVerifier() {}
     58 
     59   // VerifyProof checks that |signature| is a valid signature of
     60   // |server_config| by the public key in the leaf certificate of |certs|, and
     61   // that |certs| is a valid chain for |hostname|. On success, it returns
     62   // QUIC_SUCCESS. On failure, it returns QUIC_FAILURE and sets |*error_details|
     63   // to a description of the problem. In either case it may set |*details|,
     64   // which the caller takes ownership of.
     65   //
     66   // |context| specifies an implementation specific struct (which may be NULL
     67   // for some implementations) that provides useful information for the
     68   // verifier, e.g. logging handles.
     69   //
     70   // This function may also return QUIC_PENDING, in which case the ProofVerifier
     71   // will call back, on the original thread, via |callback| when complete.
     72   // In this case, the ProofVerifier will take ownership of |callback|.
     73   //
     74   // The signature uses SHA-256 as the hash function and PSS padding in the
     75   // case of RSA.
     76   virtual QuicAsyncStatus VerifyProof(const std::string& hostname,
     77                                       const std::string& server_config,
     78                                       const std::vector<std::string>& certs,
     79                                       const std::string& signature,
     80                                       const ProofVerifyContext* context,
     81                                       std::string* error_details,
     82                                       scoped_ptr<ProofVerifyDetails>* details,
     83                                       ProofVerifierCallback* callback) = 0;
     84 };
     85 
     86 }  // namespace net
     87 
     88 #endif  // NET_QUIC_CRYPTO_PROOF_VERIFIER_H_
     89