Martin Michelsen
115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
#include "WindowsPlatform.hh"
|
|
|
|
#include "NetworkAddresses.hh"
|
|
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#ifndef PHOSG_WINDOWS
|
|
#include <ifaddrs.h>
|
|
#else
|
|
#include <iphlpapi.h>
|
|
#include <ws2tcpip.h>
|
|
#endif
|
|
|
|
#include <memory>
|
|
#include <phosg/Encoding.hh>
|
|
#include <phosg/Network.hh>
|
|
#include <phosg/Strings.hh>
|
|
#include <stdexcept>
|
|
|
|
std::map<std::string, uint32_t> get_local_addresses() {
|
|
std::map<std::string, uint32_t> ret;
|
|
|
|
#ifndef PHOSG_WINDOWS
|
|
struct ifaddrs* ifa_raw;
|
|
if (getifaddrs(&ifa_raw)) {
|
|
auto s = phosg::string_for_error(errno);
|
|
throw std::runtime_error(std::format("failed to get interface addresses: {}", s));
|
|
}
|
|
std::unique_ptr<struct ifaddrs, void (*)(struct ifaddrs*)> ifa(ifa_raw, freeifaddrs);
|
|
|
|
for (struct ifaddrs* i = ifa.get(); i; i = i->ifa_next) {
|
|
if (!i->ifa_addr) {
|
|
continue;
|
|
}
|
|
|
|
auto* sin = reinterpret_cast<sockaddr_in*>(i->ifa_addr);
|
|
if (sin->sin_family != AF_INET) {
|
|
continue;
|
|
}
|
|
|
|
ret.emplace(i->ifa_name, ntohl(sin->sin_addr.s_addr));
|
|
}
|
|
|
|
#else
|
|
ULONG buffer_size = 0x1000;
|
|
std::vector<char> buffer(buffer_size);
|
|
|
|
auto* adapters = reinterpret_cast<IP_ADAPTER_ADDRESSES*>(buffer.data());
|
|
DWORD result = GetAdaptersAddresses(AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, adapters, &buffer_size);
|
|
if (result == ERROR_BUFFER_OVERFLOW) {
|
|
buffer.resize(buffer_size);
|
|
adapters = reinterpret_cast<IP_ADAPTER_ADDRESSES*>(buffer.data());
|
|
result = GetAdaptersAddresses(AF_INET, GAA_FLAG_INCLUDE_PREFIX, nullptr, adapters, &buffer_size);
|
|
}
|
|
|
|
if (result != NO_ERROR) {
|
|
throw std::runtime_error(std::format("GetAdaptersAddresses failed: {}", result));
|
|
}
|
|
|
|
for (IP_ADAPTER_ADDRESSES* adapter = adapters; adapter != nullptr; adapter = adapter->Next) {
|
|
for (IP_ADAPTER_UNICAST_ADDRESS* ua = adapter->FirstUnicastAddress; ua != nullptr; ua = ua->Next) {
|
|
if (ua->Address.lpSockaddr->sa_family == AF_INET) {
|
|
sockaddr_in* sa_in = reinterpret_cast<sockaddr_in*>(ua->Address.lpSockaddr);
|
|
ret.emplace(adapter->AdapterName, ntohl(sa_in->sin_addr.S_un.S_addr));
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool is_loopback_address(uint32_t addr) {
|
|
return ((addr & 0xFF000000) == 0x7F000000); // 127.0.0.0/8
|
|
}
|
|
|
|
bool is_local_address(uint32_t addr) {
|
|
return is_loopback_address(addr) || // 127.0.0.0/8
|
|
((addr & 0xFF000000) == 0x0A000000) || // 10.0.0.0/8
|
|
((addr & 0xFFF00000) == 0xAC100000) || // 172.16.0.0/12
|
|
((addr & 0xFFFF0000) == 0xC0A80000) || // 192.168.0.0/16
|
|
((addr & 0xFFFF0000) == 0xA9FE0000); // 169.254.0.0/16
|
|
}
|
|
|
|
bool is_local_address(const sockaddr_storage& daddr) {
|
|
if (daddr.ss_family != AF_INET) {
|
|
return false;
|
|
}
|
|
const sockaddr_in* sin = reinterpret_cast<const sockaddr_in*>(&daddr);
|
|
return is_local_address(ntohl(sin->sin_addr.s_addr));
|
|
}
|
|
|
|
std::string string_for_address(uint32_t address) {
|
|
return std::format("{}.{}.{}.{}",
|
|
static_cast<uint8_t>(address >> 24), static_cast<uint8_t>(address >> 16),
|
|
static_cast<uint8_t>(address >> 8), static_cast<uint8_t>(address));
|
|
}
|
|
|
|
uint32_t address_for_string(const char* address) {
|
|
return ntohl(inet_addr(address));
|
|
}
|
|
|
|
uint64_t devolution_phone_number_for_netloc(uint32_t addr, uint16_t port) {
|
|
// It seems the address part of the number is fixed-width, but the port is not. Why did they do it this way?
|
|
if (port & 0xF000) {
|
|
return (static_cast<uint64_t>(addr) << 16) | port;
|
|
} else if (port & 0x0F00) {
|
|
return (static_cast<uint64_t>(addr) << 12) | port;
|
|
} else if (port & 0x00F0) {
|
|
return (static_cast<uint64_t>(addr) << 8) | port;
|
|
} else {
|
|
return (static_cast<uint64_t>(addr) << 4) | port;
|
|
}
|
|
}
|