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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/net/x509_certificate_model.h"
#include <unicode/uidna.h>
#include "base/utf_string_conversions.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
namespace x509_certificate_model {
std::string ProcessIDN(const std::string& input) {
// Convert the ASCII input to a string16 for ICU.
string16 input16;
input16.reserve(input.length());
input16.insert(input16.end(), input.begin(), input.end());
string16 output16;
output16.resize(input.length());
UErrorCode status = U_ZERO_ERROR;
int output_chars = uidna_IDNToUnicode(input16.data(), input.length(),
&output16[0], output16.length(),
UIDNA_DEFAULT, NULL, &status);
if (status == U_ZERO_ERROR) {
output16.resize(output_chars);
} else if (status != U_BUFFER_OVERFLOW_ERROR) {
return input;
} else {
output16.resize(output_chars);
output_chars = uidna_IDNToUnicode(input16.data(), input.length(),
&output16[0], output16.length(),
UIDNA_DEFAULT, NULL, &status);
if (status != U_ZERO_ERROR)
return input;
DCHECK_EQ(static_cast<size_t>(output_chars), output16.length());
output16.resize(output_chars); // Just to be safe.
}
if (input16 == output16)
return input; // Input did not contain any encoded data.
// Input contained encoded data, return formatted string showing original and
// decoded forms.
return l10n_util::GetStringFUTF8(IDS_CERT_INFO_IDN_VALUE_FORMAT,
input16, output16);
}
std::string ProcessRawBytesWithSeparators(const unsigned char* data,
size_t data_length,
char hex_separator,
char line_separator) {
static const char kHexChars[] = "0123456789ABCDEF";
// Each input byte creates two output hex characters + a space or newline,
// except for the last byte.
std::string ret;
size_t kMin = 0U;
ret.reserve(std::max(kMin, data_length * 3 - 1));
for (size_t i = 0; i < data_length; ++i) {
unsigned char b = data[i];
ret.push_back(kHexChars[(b >> 4) & 0xf]);
ret.push_back(kHexChars[b & 0xf]);
if (i + 1 < data_length) {
if ((i + 1) % 16 == 0)
ret.push_back(line_separator);
else
ret.push_back(hex_separator);
}
}
return ret;
}
std::string ProcessRawBytes(const unsigned char* data, size_t data_length) {
return ProcessRawBytesWithSeparators(data, data_length, ' ', '\n');
}
#if defined(USE_NSS)
std::string ProcessRawBits(const unsigned char* data, size_t data_length) {
return ProcessRawBytes(data, (data_length + 7) / 8);
}
#endif // USE_NSS
} // x509_certificate_model
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