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#pragma once
#include "socket.h"
#include "hostip.h"
#include <util/system/error.h>
#include <util/system/byteorder.h>
#include <util/generic/string.h>
#include <util/generic/yexception.h>
/// IPv4 address in network format
using TIpHost = ui32;
/// Port number in host format
using TIpPort = ui16;
/*
* ipStr is in 'ddd.ddd.ddd.ddd' format
* returns IPv4 address in inet format
*/
static inline TIpHost IpFromString(const char* ipStr) {
in_addr ia;
if (inet_aton(ipStr, &ia) == 0) {
ythrow TSystemError() << "Failed to convert (" << ipStr << ") to ip address";
}
return (ui32)ia.s_addr;
}
static inline char* IpToString(TIpHost ip, char* buf, size_t len) {
if (!inet_ntop(AF_INET, (void*)&ip, buf, (socklen_t)len)) {
ythrow TSystemError() << "Failed to get ip address string";
}
return buf;
}
static inline TString IpToString(TIpHost ip) {
char buf[INET_ADDRSTRLEN];
return TString(IpToString(ip, buf, sizeof(buf)));
}
static inline TIpHost ResolveHost(const char* data, size_t len) {
TIpHost ret;
const TString s(data, len);
if (NResolver::GetHostIP(s.data(), &ret) != 0) {
ythrow TSystemError(NResolver::GetDnsError()) << "can not resolve(" << s << ")";
}
return HostToInet(ret);
}
/// socket address
struct TIpAddress: public sockaddr_in {
inline TIpAddress() noexcept {
Clear();
}
inline TIpAddress(const sockaddr_in& addr) noexcept
: sockaddr_in(addr)
, tmp(0)
{
}
inline TIpAddress(TIpHost ip, TIpPort port) noexcept {
Set(ip, port);
}
inline TIpAddress(TStringBuf ip, TIpPort port) {
Set(ResolveHost(ip.data(), ip.size()), port);
}
inline TIpAddress(const char* ip, TIpPort port) {
Set(ResolveHost(ip, strlen(ip)), port);
}
inline operator sockaddr*() const noexcept {
return (sockaddr*)(sockaddr_in*)this;
}
inline operator socklen_t*() const noexcept {
tmp = sizeof(sockaddr_in);
return (socklen_t*)&tmp;
}
inline operator socklen_t() const noexcept {
tmp = sizeof(sockaddr_in);
return tmp;
}
inline void Clear() noexcept {
Zero((sockaddr_in&)(*this));
}
inline void Set(TIpHost ip, TIpPort port) noexcept {
Clear();
sin_family = AF_INET;
sin_addr.s_addr = ip;
sin_port = HostToInet(port);
}
inline TIpHost Host() const noexcept {
return sin_addr.s_addr;
}
inline TIpPort Port() const noexcept {
return InetToHost(sin_port);
}
private:
// required for "operator socklen_t*()"
mutable socklen_t tmp;
};
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