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https://github.com/oxen-io/lokinet.git
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125 lines
2.9 KiB
C++
125 lines
2.9 KiB
C++
#ifndef LLARP_NET_HPP
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#define LLARP_NET_HPP
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#include <net/uint128.hpp>
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#include <net/address_info.hpp>
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#include <net/ip_address.hpp>
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#include <net/net_int.hpp>
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#include <net/net.h>
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#include <util/mem.hpp>
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#include <util/bits.hpp>
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#include <functional>
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#include <cstdlib> // for itoa
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#include <vector>
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// for addrinfo
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#ifndef _WIN32
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <wspiapi.h>
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#define inet_aton(x, y) inet_pton(AF_INET, x, y)
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#endif
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bool
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operator==(const sockaddr& a, const sockaddr& b);
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bool
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operator==(const sockaddr_in& a, const sockaddr_in& b);
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bool
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operator==(const sockaddr_in6& a, const sockaddr_in6& b);
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bool
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operator<(const sockaddr_in6& a, const sockaddr_in6& b);
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bool
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operator<(const in6_addr& a, const in6_addr& b);
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bool
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operator==(const in6_addr& a, const in6_addr& b);
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namespace llarp
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{
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/// get a netmask with the higest numset bits set
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constexpr huint128_t
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_netmask_ipv6_bits(uint32_t numset)
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{
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return (128 - numset) ? (huint128_t{1} << numset) | _netmask_ipv6_bits(numset + 1)
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: huint128_t{0};
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}
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constexpr huint128_t
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netmask_ipv6_bits(uint32_t numset)
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{
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return _netmask_ipv6_bits(128 - numset);
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}
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/// get a netmask with the higest numset bits set
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constexpr uint32_t
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_netmask_ipv4_bits(uint32_t numset)
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{
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return (32 - numset) ? (1 << numset) | _netmask_ipv4_bits(numset + 1) : 0;
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}
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/// get a netmask given some /N range
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constexpr huint32_t
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netmask_ipv4_bits(uint32_t num)
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{
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return huint32_t{_netmask_ipv4_bits(32 - num)};
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}
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constexpr huint32_t
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ipaddr_ipv4_bits(uint32_t a, uint32_t b, uint32_t c, uint32_t d)
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{
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return huint32_t{(d) | (c << 8) | (b << 16) | (a << 24)};
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}
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bool
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IsIPv4Bogon(const huint32_t& addr);
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constexpr bool
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ipv6_is_siit(const in6_addr& addr)
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{
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return addr.s6_addr[11] == 0xff && addr.s6_addr[10] == 0xff && addr.s6_addr[9] == 0
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&& addr.s6_addr[8] == 0 && addr.s6_addr[7] == 0 && addr.s6_addr[6] == 0
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&& addr.s6_addr[5] == 0 && addr.s6_addr[4] == 0 && addr.s6_addr[3] == 0
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&& addr.s6_addr[2] == 0 && addr.s6_addr[1] == 0 && addr.s6_addr[0] == 0;
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}
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bool
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IsBogon(const in6_addr& addr);
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bool
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IsBogon(const huint128_t addr);
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bool
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IsBogonRange(const in6_addr& host, const in6_addr& mask);
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bool
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AllInterfaces(int af, IpAddress& addr);
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/// get first network interface with public address
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bool
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GetBestNetIF(std::string& ifname, int af = AF_INET);
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/// look at adapter ranges and find a free one
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std::optional<std::string>
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FindFreeRange();
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/// look at adapter names and find a free one
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std::optional<std::string>
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FindFreeTun();
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/// get network interface address for network interface with ifname
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std::optional<IpAddress>
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GetIFAddr(const std::string& ifname, int af = AF_INET);
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} // namespace llarp
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#endif
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