| /* |
| * Copyright (c) 2021, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * This file implements IPv4 address related functionality. |
| */ |
| |
| #include "ip4_address.hpp" |
| |
| #include "common/code_utils.hpp" |
| #include "common/numeric_limits.hpp" |
| |
| namespace ot { |
| namespace Ip4 { |
| |
| Error Address::FromString(const char *aString) |
| { |
| constexpr char kSeperatorChar = '.'; |
| constexpr char kNullChar = '\0'; |
| |
| Error error = kErrorParse; |
| |
| for (uint8_t index = 0;; index++) |
| { |
| uint16_t value = 0; |
| uint8_t hasFirstDigit = false; |
| |
| for (char digitChar = *aString;; ++aString, digitChar = *aString) |
| { |
| if ((digitChar < '0') || (digitChar > '9')) |
| { |
| break; |
| } |
| |
| value = static_cast<uint16_t>((value * 10) + static_cast<uint8_t>(digitChar - '0')); |
| VerifyOrExit(value <= NumericLimits<uint8_t>::kMax); |
| hasFirstDigit = true; |
| } |
| |
| VerifyOrExit(hasFirstDigit); |
| |
| mBytes[index] = static_cast<uint8_t>(value); |
| |
| if (index == sizeof(Address) - 1) |
| { |
| break; |
| } |
| |
| VerifyOrExit(*aString == kSeperatorChar); |
| aString++; |
| } |
| |
| VerifyOrExit(*aString == kNullChar); |
| error = kErrorNone; |
| |
| exit: |
| return error; |
| } |
| |
| Address::InfoString Address::ToString(void) const |
| { |
| InfoString string; |
| |
| string.Append("%d.%d.%d.%d", mBytes[0], mBytes[1], mBytes[2], mBytes[3]); |
| |
| return string; |
| } |
| |
| } // namespace Ip4 |
| } // namespace ot |