forked from dolphin-emu/dolphin
ce69201f33
Given we have std::array and std::optional, we can use these in conjunction with one another to avoid the need for out parameters.
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "Common/Network.h"
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#include <algorithm>
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#include <cctype>
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#include <cstring>
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#include <ctime>
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#include "Common/Random.h"
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#include "Common/StringUtil.h"
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namespace Common
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{
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MACAddress GenerateMacAddress(const MACConsumer type)
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{
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constexpr std::array<u8, 3> oui_bba{{0x00, 0x09, 0xbf}};
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constexpr std::array<u8, 3> oui_ios{{0x00, 0x17, 0xab}};
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MACAddress mac{};
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switch (type)
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{
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case MACConsumer::BBA:
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std::copy(oui_bba.begin(), oui_bba.end(), mac.begin());
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break;
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case MACConsumer::IOS:
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std::copy(oui_ios.begin(), oui_ios.end(), mac.begin());
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break;
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}
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// Generate the 24-bit NIC-specific portion of the MAC address.
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Random::Generate(&mac[3], 3);
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return mac;
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}
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std::string MacAddressToString(const MACAddress& mac)
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{
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return StringFromFormat("%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4],
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mac[5]);
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}
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std::optional<MACAddress> StringToMacAddress(const std::string& mac_string)
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{
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if (mac_string.empty())
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return {};
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int x = 0;
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MACAddress mac{};
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for (size_t i = 0; i < mac_string.size() && x < (MAC_ADDRESS_SIZE * 2); ++i)
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{
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char c = tolower(mac_string.at(i));
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if (c >= '0' && c <= '9')
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{
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mac[x / 2] |= (c - '0') << ((x & 1) ? 0 : 4);
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++x;
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}
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else if (c >= 'a' && c <= 'f')
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{
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mac[x / 2] |= (c - 'a' + 10) << ((x & 1) ? 0 : 4);
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++x;
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}
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}
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// A valid 48-bit MAC address consists of 6 octets, where each
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// nibble is a character in the MAC address, making 12 characters
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// in total.
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if (x / 2 != MAC_ADDRESS_SIZE)
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return {};
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return std::make_optional(mac);
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}
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} // namespace Common
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