1 // Copyright (c) 2012 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 #include "net/cert/x509_cert_types.h" 6 7 #include <cstdlib> 8 #include <cstring> 9 10 #include "base/logging.h" 11 #include "base/strings/string_number_conversions.h" 12 #include "base/strings/string_piece.h" 13 #include "base/time/time.h" 14 #include "net/cert/x509_certificate.h" 15 16 namespace net { 17 18 namespace { 19 20 // Helper for ParseCertificateDate. |*field| must contain at least 21 // |field_len| characters. |*field| will be advanced by |field_len| on exit. 22 // |*ok| is set to false if there is an error in parsing the number, but left 23 // untouched otherwise. Returns the parsed integer. 24 int ParseIntAndAdvance(const char** field, size_t field_len, bool* ok) { 25 int result = 0; 26 *ok &= base::StringToInt(base::StringPiece(*field, field_len), &result); 27 *field += field_len; 28 return result; 29 } 30 31 } 32 33 CertPrincipal::CertPrincipal() { 34 } 35 36 CertPrincipal::CertPrincipal(const std::string& name) : common_name(name) {} 37 38 CertPrincipal::~CertPrincipal() { 39 } 40 41 std::string CertPrincipal::GetDisplayName() const { 42 if (!common_name.empty()) 43 return common_name; 44 if (!organization_names.empty()) 45 return organization_names[0]; 46 if (!organization_unit_names.empty()) 47 return organization_unit_names[0]; 48 49 return std::string(); 50 } 51 52 bool ParseCertificateDate(const base::StringPiece& raw_date, 53 CertDateFormat format, 54 base::Time* time) { 55 size_t year_length = format == CERT_DATE_FORMAT_UTC_TIME ? 2 : 4; 56 57 if (raw_date.length() < 11 + year_length) 58 return false; 59 60 const char* field = raw_date.data(); 61 bool valid = true; 62 base::Time::Exploded exploded = {0}; 63 64 exploded.year = ParseIntAndAdvance(&field, year_length, &valid); 65 exploded.month = ParseIntAndAdvance(&field, 2, &valid); 66 exploded.day_of_month = ParseIntAndAdvance(&field, 2, &valid); 67 exploded.hour = ParseIntAndAdvance(&field, 2, &valid); 68 exploded.minute = ParseIntAndAdvance(&field, 2, &valid); 69 exploded.second = ParseIntAndAdvance(&field, 2, &valid); 70 if (valid && year_length == 2) 71 exploded.year += exploded.year < 50 ? 2000 : 1900; 72 73 valid &= exploded.HasValidValues(); 74 75 if (!valid) 76 return false; 77 78 *time = base::Time::FromUTCExploded(exploded); 79 return true; 80 } 81 82 } // namespace net 83
