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//
// bjIPAddr.cpp
// TestTB
//
// Created by Terrin Eager on 1/19/13.
//
//
#include <netinet/in.h>
#include <arpa/inet.h>
#include "bjIPAddr.h"
#include "bjstring.h"
// static
sockaddr_storage BJIPAddr::emptySockAddrStorage;
BJIPAddr::BJIPAddr()
{
memset(&emptySockAddrStorage,0,sizeof(emptySockAddrStorage));
Empty();
}
BJIPAddr::BJIPAddr(const BJIPAddr& src)
{
memcpy(&sockAddrStorage,&src.sockAddrStorage,sizeof(sockAddrStorage));
IPv4SubNet = src.IPv4SubNet;
}
void BJIPAddr::Empty()
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
IPv4SubNet = 0;
}
bool BJIPAddr::IsBonjourMulticast()
{
bool bResult = false;
struct in_addr BonjourMulicastAddrIPv4= {0xFB0000E0};
struct in6_addr BonjourMulicastAddrIPv6 = {{{ 0xFF,0x02,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0xFB }}};
if (sockAddrStorage.ss_family == AF_INET)
{
struct sockaddr_in* pAddrIn = (sockaddr_in*) &sockAddrStorage;
return (pAddrIn->sin_addr.s_addr == BonjourMulicastAddrIPv4.s_addr);
}
if (sockAddrStorage.ss_family == AF_INET6)
{
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
return (memcmp(&pAddrIn->sin6_addr,&BonjourMulicastAddrIPv6,sizeof(in6_addr)) == 0);
}
return bResult;
}
bool BJIPAddr::IsSameSubNet(BJIPAddr* pCheckAddr)
{
if (IPv4SubNet == 0)
return true;
if (!pCheckAddr->IsIPv4())
return true;
in_addr_t Mask = 0xFFFFFFFF;
Mask = Mask << (32-IPv4SubNet);
endian_swap(Mask);
struct sockaddr_in* pMyAddrIn = (sockaddr_in*) &sockAddrStorage;
in_addr_t myNetworkAddress = pMyAddrIn->sin_addr.s_addr & Mask;
struct sockaddr_in* pCheckAddrIn = (sockaddr_in*) pCheckAddr->GetRawValue();
in_addr_t CheckNetworkAddress = pCheckAddrIn->sin_addr.s_addr & Mask;
return (myNetworkAddress == CheckNetworkAddress);
}
bool BJIPAddr::IsIPv4()
{
return (sockAddrStorage.ss_family == AF_INET);
}
bool BJIPAddr::IsIPv6()
{
return (sockAddrStorage.ss_family == AF_INET6);
}
bool BJIPAddr::IsIPv6LinkLocal()
{
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
return (pAddrIn->sin6_addr.__u6_addr.__u6_addr8[0] == 0xfe &&
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[1] == 0x80);
}
bool BJIPAddr::IsEmpty()
{
return (memcmp(&sockAddrStorage,&emptySockAddrStorage,sizeof(sockAddrStorage)) == 0);
}
bool BJIPAddr::IsEmptySubnet()
{
return (IPv4SubNet == 0);
}
void BJIPAddr::Setv6(const char* pIPaddr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
if (inet_pton(AF_INET6, pIPaddr, &pAddrIn->sin6_addr) && memcmp(&sockAddrStorage,&emptySockAddrStorage,sizeof(sockAddrStorage)) == 0)
pAddrIn->sin6_family = AF_INET6;
}
void BJIPAddr::Set(const char* pIPaddr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
if (pIPaddr == NULL || strlen(pIPaddr) == 0)
return;
BJString sIPAddr;
BJString sMask;
const char* pSeperator = strstr(pIPaddr,"/");
if (pSeperator)
{
sIPAddr.Set(pIPaddr, (BJ_UINT32)(pSeperator - pIPaddr));
sMask.Set(pSeperator+1);
}
else
{
sIPAddr.Set(pIPaddr);
}
struct sockaddr_in* pAddrIn = (sockaddr_in*) &sockAddrStorage;
pAddrIn->sin_family = AF_INET;
pAddrIn->sin_addr.s_addr = inet_addr(sIPAddr.GetBuffer());
IPv4SubNet = sMask.GetUINT32();
}
void BJIPAddr::Setv4Raw(BJ_UINT8* ipi4_addr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in* pAddrIn = (sockaddr_in*) &sockAddrStorage;
pAddrIn->sin_family = AF_INET;
memcpy(&pAddrIn->sin_addr, ipi4_addr, sizeof(pAddrIn->sin_addr));
}
void BJIPAddr::Setv6Raw(BJ_UINT8* ipi6_addr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
pAddrIn->sin6_family = AF_INET6;
memcpy(&pAddrIn->sin6_addr, ipi6_addr, sizeof(pAddrIn->sin6_addr));
}
void BJIPAddr::Set(struct in6_addr* ipi6_addr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
pAddrIn->sin6_family = AF_INET6;
memcpy(&pAddrIn->sin6_addr, ipi6_addr, sizeof(pAddrIn->sin6_addr));
}
void BJIPAddr::Set(struct in_addr* ip_addr)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in* pAddrIn = (sockaddr_in*) &sockAddrStorage;
pAddrIn->sin_family = AF_INET;
pAddrIn->sin_addr = *ip_addr;
}
void BJIPAddr::Set(struct sockaddr_storage* pStorage)
{
memcpy(&sockAddrStorage,pStorage,sizeof(sockAddrStorage));
}
sockaddr_storage* BJIPAddr::GetRawValue()
{
return &sockAddrStorage;
}
struct in6_addr* BJIPAddr::Getin6_addr()
{
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
return &pAddrIn->sin6_addr;
}
BJ_UINT16 BJIPAddr::GetPortNumber()
{
BJ_UINT16 port = 0;
if (sockAddrStorage.ss_family == AF_INET)
{
struct sockaddr_in* pAddrIn = (struct sockaddr_in*)&sockAddrStorage;
port = ntohs(pAddrIn->sin_port);
}
else if (sockAddrStorage.ss_family == AF_INET6)
{
struct sockaddr_in6* pAddrIn = (struct sockaddr_in6*)&sockAddrStorage;
port = ntohs(pAddrIn->sin6_port);
}
return port;
}
BJ_COMPARE BJIPAddr::Compare(BJIPAddr* pIPAddr)
{
if (sockAddrStorage.ss_family > pIPAddr->sockAddrStorage.ss_family)
return BJ_GT;
if (sockAddrStorage.ss_family < pIPAddr->sockAddrStorage.ss_family)
return BJ_LT;
if (sockAddrStorage.ss_family == AF_INET)
{
struct sockaddr_in* pMyAddrIn = (sockaddr_in*) &sockAddrStorage;
struct sockaddr_in* pAddrIn = (sockaddr_in*) &pIPAddr->sockAddrStorage;
if (pMyAddrIn->sin_addr.s_addr > pAddrIn->sin_addr.s_addr)
return BJ_GT;
if (pMyAddrIn->sin_addr.s_addr < pAddrIn->sin_addr.s_addr)
return BJ_LT;
return BJ_EQUAL;
}
else
{
struct sockaddr_in6* pMyAddrIn = (sockaddr_in6*) &sockAddrStorage;
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &pIPAddr->sockAddrStorage;
int result = memcmp(&pMyAddrIn->sin6_addr, &pAddrIn->sin6_addr, sizeof(sockaddr_in6));
if (result > 0)
return BJ_GT;
if (result < 0)
return BJ_LT;
return BJ_EQUAL;
}
}
/*
take the mac address: for example 52:74:f2:b1:a8:7f
throw ff:fe in the middle: 52:74:f2:ff:fe:b1:a8:7f
reformat to IPv6 notation 5274:f2ff:feb1:a87f
convert the first octet from hexadecimal to binary: 52 -> 01010010
invert the bit at position 6 (counting from 0): 01010010 -> 01010000
convert octet back to hexadecimal: 01010000 -> 50
replace first octet with newly calculated one: 5074:f2ff:feb1:a87f
prepend the link-local prefix: fe80::5074:f2ff:feb1:a87f
*/
void BJIPAddr::CreateLinkLocalIPv6(BJ_UINT8* pmac)
{
memset(&sockAddrStorage,0,sizeof(sockAddrStorage));
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
pAddrIn->sin6_family = AF_INET6;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[0] = 0xfe;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[1] = 0x80;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[8] = *pmac;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[8] ^= 1 << 1; // invert 6 bit
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[9] = *(pmac+1);
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[10] = *(pmac+2);
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[11] = 0xff;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[12] = 0xfe;
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[13] = *(pmac+3);
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[14] = *(pmac+4);
pAddrIn->sin6_addr.__u6_addr.__u6_addr8[15] = *(pmac+5);
}
char* BJIPAddr::GetString()
{
memset(stringbuffer,0,sizeof(stringbuffer));
if (IsIPv6())
{
struct sockaddr_in6* pAddrIn = (sockaddr_in6*) &sockAddrStorage;
inet_ntop(AF_INET6, &pAddrIn->sin6_addr, stringbuffer, sizeof(stringbuffer));
}
else
{
struct sockaddr_in* pAddrIn = (sockaddr_in*) &sockAddrStorage;
inet_ntop(AF_INET, &pAddrIn->sin_addr, stringbuffer, sizeof(stringbuffer));
}
return stringbuffer;
}
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