chrome/common/net/x509_certificate_model.cc

   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 #include "chrome/common/net/x509_certificate_model.h"
   6
   7 #include <unicode/uidna.h>
   8
   9 #include <algorithm>
  10
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "chrome/grit/generated_resources.h"
  13 #include "components/url_formatter/url_formatter.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15
  16 namespace x509_certificate_model {
  17
  18 std::string ProcessIDN(const std::string& input) {
  19   // Convert the ASCII input to a string16 for ICU.
  20   base::string16 input16;
  21   input16.reserve(input.length());
  22   input16.insert(input16.end(), input.begin(), input.end());
  23
  24   base::string16 output16 = url_formatter::IDNToUnicode(input, std::string());
  25   if (input16 == output16)
  26     return input;  // Input did not contain any encoded data.
  27
  28   // Input contained encoded data, return formatted string showing original and
  29   // decoded forms.
  30   return l10n_util::GetStringFUTF8(IDS_CERT_INFO_IDN_VALUE_FORMAT,
  31                                    input16, output16);
  32 }
  33
  34 std::string ProcessRawBytesWithSeparators(const unsigned char* data,
  35                                           size_t data_length,
  36                                           char hex_separator,
  37                                           char line_separator) {
  38   static const char kHexChars[] = "0123456789ABCDEF";
  39
  40   // Each input byte creates two output hex characters + a space or newline,
  41   // except for the last byte.
  42   std::string ret;
  43   size_t kMin = 0U;
  44
  45   if (!data_length)
  46     return std::string();
  47
  48   ret.reserve(std::max(kMin, data_length * 3 - 1));
  49
  50   for (size_t i = 0; i < data_length; ++i) {
  51     unsigned char b = data[i];
  52     ret.push_back(kHexChars[(b >> 4) & 0xf]);
  53     ret.push_back(kHexChars[b & 0xf]);
  54     if (i + 1 < data_length) {
  55       if ((i + 1) % 16 == 0)
  56         ret.push_back(line_separator);
  57       else
  58         ret.push_back(hex_separator);
  59     }
  60   }
  61   return ret;
  62 }
  63
  64 std::string ProcessRawBytes(const unsigned char* data, size_t data_length) {
  65   return ProcessRawBytesWithSeparators(data, data_length, ' ', '\n');
  66 }
  67
  68 #if defined(USE_NSS_CERTS)
  69 std::string ProcessRawBits(const unsigned char* data, size_t data_length) {
  70   return ProcessRawBytes(data, (data_length + 7) / 8);
  71 }
  72 #endif  // USE_NSS_CERTS
  73
  74 }  // namespace x509_certificate_model
  75