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      1 // Copyright (c) 2011 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_X509_UTIL_OPENSSL_H_
      6 #define NET_CERT_X509_UTIL_OPENSSL_H_
      7 
      8 #include <openssl/asn1.h>
      9 #include <openssl/x509v3.h>
     10 
     11 #include <string>
     12 #include <vector>
     13 
     14 #include "base/strings/string_piece.h"
     15 #include "net/base/net_export.h"
     16 
     17 namespace base {
     18 class Time;
     19 }  // namespace base
     20 
     21 namespace net {
     22 
     23 // A collection of helper functions to fetch data from OpenSSL X509 certificates
     24 // into more convenient std / base datatypes.
     25 namespace x509_util {
     26 
     27 bool NET_EXPORT ParsePrincipalKeyAndValue(X509_NAME_ENTRY* entry,
     28                                           std::string* key,
     29                                           std::string* value);
     30 
     31 bool NET_EXPORT ParsePrincipalKeyAndValueByIndex(X509_NAME* name,
     32                                                  int index,
     33                                                  std::string* key,
     34                                                  std::string* value);
     35 
     36 bool NET_EXPORT ParsePrincipalValueByIndex(X509_NAME* name,
     37                                            int index,
     38                                            std::string* value);
     39 
     40 bool NET_EXPORT ParsePrincipalValueByNID(X509_NAME* name,
     41                                          int nid,
     42                                          std::string* value);
     43 
     44 bool NET_EXPORT ParseDate(ASN1_TIME* x509_time, base::Time* time);
     45 
     46 // DER-encodes |x509|, caching the encoding in a structure owned by
     47 // the X509. On success, returns true, and sets |*out_der| to point to
     48 // the encoding. The StringPiece is valid as long as |x509| is not
     49 // freed.
     50 //
     51 // Note: this caches the encoding, so |x509| must not be modified
     52 // after the first call to this function.
     53 bool NET_EXPORT GetDER(X509* x509, base::StringPiece* out_der);
     54 
     55 } // namespace x509_util
     56 
     57 } // namespace net
     58 
     59 #endif  // NET_CERT_X509_UTIL_OPENSSL_H_
     60