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      1 // Copyright 2014 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_CERT_CRL_SET_STORAGE_H_
      6 #define NET_CERT_CRL_SET_STORAGE_H_
      7 
      8 #include <string>
      9 #include <utility>
     10 #include <vector>
     11 
     12 #include "base/strings/string_piece.h"
     13 #include "net/base/net_export.h"
     14 #include "net/cert/crl_set.h"
     15 
     16 namespace base {
     17 class DictionaryValue;
     18 }
     19 
     20 namespace net {
     21 
     22 // Static helpers to save and load CRLSet.
     23 class NET_EXPORT CRLSetStorage {
     24  public:
     25   // Parse parses the bytes in |data| and, on success, puts a new CRLSet in
     26   // |out_crl_set| and returns true.
     27   static bool Parse(base::StringPiece data,
     28                     scoped_refptr<CRLSet>* out_crl_set);
     29 
     30   // ApplyDelta returns a new CRLSet in |out_crl_set| that is the result of
     31   // updating |in_crl_set| with the delta information in |delta_bytes|.
     32   static bool ApplyDelta(const CRLSet* in_crl_set,
     33                          const base::StringPiece& delta_bytes,
     34                          scoped_refptr<CRLSet>* out_crl_set);
     35 
     36   // GetIsDeltaUpdate extracts the header from |bytes|, sets *is_delta to
     37   // whether |bytes| is a delta CRL set or not and returns true. In the event
     38   // of a parse error, it returns false.
     39   static bool GetIsDeltaUpdate(const base::StringPiece& bytes, bool *is_delta);
     40 
     41   // Serialize returns a string of bytes suitable for passing to Parse. Parsing
     42   // and serializing a CRLSet is a lossless operation - the resulting bytes
     43   // will be equal.
     44   static std::string Serialize(const CRLSet* crl_set);
     45 
     46  private:
     47   // CopyBlockedSPKIsFromHeader sets |blocked_spkis_| to the list of values
     48   // from "BlockedSPKIs" in |header_dict|.
     49   static bool CopyBlockedSPKIsFromHeader(CRLSet* crl_set,
     50                                          base::DictionaryValue* header_dict);
     51 };
     52 
     53 }  // namespace net
     54 
     55 #endif  // NET_CERT_CRL_SET_STORAGE_H_
     56