Fixed: Implements IPv6 in CInetAddress
This commit is contained in:
kervala
parent
a16f8a6f18
commit
c63e211cab
2 changed files with 173 additions and 45 deletions
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@ -24,7 +24,9 @@
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struct sockaddr_in;
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struct sockaddr_in6;
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struct in_addr;
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struct in6_addr;
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#ifdef NL_OS_WINDOWS
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@ -89,17 +91,25 @@ public:
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/// Sets hostname and port (ex: www.nevrax.com:80)
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void setNameAndPort( const std::string& hostNameAndPort );
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/** Sets internal socket address directly (contents is copied).
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/** Sets internal IPv4 socket address directly (contents is copied).
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* It also retrieves the host name if CInetAddress::RetrieveNames is true.
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*/
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void setSockAddr( const sockaddr_in* saddr );
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/** Sets internal IPv6 socket address directly (contents is copied).
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* It also retrieves the host name if CInetAddress::RetrieveNames is true.
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*/
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void setSockAddr6( const sockaddr_in6* saddr6 );
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/// Returns if object (address and port) is valid
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bool isValid() const;
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/// Returns internal socket address (read only)
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/// Returns internal IPv4 socket address (read only)
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const sockaddr_in *sockAddr() const;
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/// Returns internal IPv6 socket address (read only)
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const sockaddr_in6 *sockAddr6() const;
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/// Returns internal IP address
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uint32 internalIPAddress() const;
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@ -140,9 +150,12 @@ public:
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protected:
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/// Constructor with ip address, port=0
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/// Constructor with IPv4 address, port=0
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CInetAddress( const in_addr *ip, const char *hostname = 0);
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/// Constructor with IPv6 address, port=0
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CInetAddress( const in6_addr *ip, const char *hostname = 0);
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/// Update _HostName from _SockAddr
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void updateHostName();
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@ -153,6 +166,7 @@ private:
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std::string _HostName;
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sockaddr_in *_SockAddr;
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sockaddr_in6 *_SockAddr6;
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bool _Valid;
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};
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@ -27,6 +27,7 @@
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#ifdef NL_OS_WINDOWS
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# include <winsock2.h>
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# include <ws2tcpip.h>
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# include <ws2ipdef.h>
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// for Windows 2000 compatibility
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# include <wspiapi.h>
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#elif defined NL_OS_UNIX
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@ -58,20 +59,32 @@ bool CInetAddress::RetrieveNames = false;
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CInetAddress::CInetAddress()
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{
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init();
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// IPv4
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_SockAddr->sin_port = 0; // same as htons(0)
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memset( &_SockAddr->sin_addr, 0, sizeof(in_addr) ); // same as htonl(INADDR_ANY)
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// IPv6
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_SockAddr6->sin6_port = 0;
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memset( &_SockAddr6->sin6_addr, 0, sizeof(in6_addr) ); // same as htonl(INADDR_ANY)
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}
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/*
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* Constructor with ip address, port=0
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* Constructor with IPv4 address, port=0
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*/
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CInetAddress::CInetAddress( const in_addr *ip, const char *hostname )
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{
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init();
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// IPv4
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_SockAddr->sin_port = 0;
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memcpy( &_SockAddr->sin_addr, ip, sizeof(in_addr) );
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// invalid IPv6
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_SockAddr6->sin6_port = 0;
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memset( &_SockAddr6->sin6_addr, 0, sizeof(in6_addr) );
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// get the host name to be displayed
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if(hostname)
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{
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@ -81,6 +94,36 @@ CInetAddress::CInetAddress( const in_addr *ip, const char *hostname )
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{
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updateHostName();
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}
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_Valid = true;
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}
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/*
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* Constructor with IPv6 address, port=0
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*/
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CInetAddress::CInetAddress( const in6_addr *ip, const char *hostname )
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{
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init();
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// IPv6
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_SockAddr6->sin6_port = 0;
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memcpy( &_SockAddr6->sin6_addr, ip, sizeof(in6_addr) );
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// invalid IPv4
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_SockAddr->sin_port = 0;
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memset( &_SockAddr->sin_addr, 0, sizeof(in_addr) );
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// get the host name to be displayed
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if(hostname)
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{
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_HostName = hostname;
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}
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else
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{
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updateHostName();
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}
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_Valid = true;
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}
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@ -92,7 +135,20 @@ void CInetAddress::updateHostName()
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{
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char host[NI_MAXHOST];
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sint status = getnameinfo((struct sockaddr *) _SockAddr, sizeof (struct sockaddr), host, NI_MAXHOST, NULL, 0, NI_NUMERICSERV);
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// if unable to resolve DNS, returns an error and use IP address instead
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sint status = 1;
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// check if IPv4 is valid
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if (_SockAddr->sin_addr.s_addr != 0)
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{
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// IPv4
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status = getnameinfo((struct sockaddr *) _SockAddr, sizeof (sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICSERV | NI_NAMEREQD);
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}
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else if (!IN6_IS_ADDR_UNSPECIFIED(&_SockAddr6->sin6_addr))
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{
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// IPv6
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status = getnameinfo((struct sockaddr *) _SockAddr6, sizeof (sockaddr_in6), host, NI_MAXHOST, NULL, 0, NI_NUMERICSERV | NI_NAMEREQD);
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}
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if ( status )
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{
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@ -134,6 +190,7 @@ CInetAddress::CInetAddress( const CInetAddress& other )
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init();
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_HostName = other._HostName;
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memcpy( _SockAddr, other._SockAddr, sizeof( *_SockAddr ) );
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memcpy( _SockAddr6, other._SockAddr6, sizeof( *_SockAddr6 ) );
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_Valid = other._Valid;
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}
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@ -145,6 +202,7 @@ CInetAddress& CInetAddress::operator=( const CInetAddress& other )
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{
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_HostName = other._HostName;
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memcpy( _SockAddr, other._SockAddr, sizeof( *_SockAddr ) );
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memcpy( _SockAddr6, other._SockAddr6, sizeof( *_SockAddr6 ) );
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_Valid = other._Valid;
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return *this;
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}
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@ -185,9 +243,15 @@ void CInetAddress::init()
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_Valid = false;
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// IPv4
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_SockAddr = new sockaddr_in;
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memset(_SockAddr, 0, sizeof(_SockAddr));
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_SockAddr->sin_family = AF_INET;
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memset( _SockAddr->sin_zero, 0, 8 );
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// IPv6
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_SockAddr6 = new sockaddr_in6;
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memset(_SockAddr6, 0, sizeof(_SockAddr6));
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_SockAddr6->sin6_family = AF_INET6;
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}
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@ -197,6 +261,7 @@ void CInetAddress::init()
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CInetAddress::~CInetAddress()
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{
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delete _SockAddr;
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delete _SockAddr6;
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// _Valid = false;
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}
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@ -227,10 +292,39 @@ void CInetAddress::setNameAndPort( const std::string& hostNameAndPort )
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*/
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CInetAddress& CInetAddress::setByName(const std::string& hostName)
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{
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// Try to convert directly for addresses such as a.b.c.d
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in_addr iaddr;
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iaddr.s_addr = inet_addr( hostName.c_str() );
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if ( iaddr.s_addr == INADDR_NONE )
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// invalid IPv4
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memset(&_SockAddr->sin_addr, 0, sizeof(in_addr));
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// invalid IPv6
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memset(&_SockAddr6->sin6_addr, 0, sizeof(in6_addr));
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// Try to convert directly for addresses such as a.b.c.d and a:b:c:d:e:f:g:h
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in_addr ipv4;
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sint res = inet_pton(AF_INET, hostName.c_str(), &ipv4);
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if (res == 1)
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{
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// hostname is a valid IPv4
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memcpy(&_SockAddr->sin_addr, &ipv4, sizeof(in_addr));
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}
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else
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{
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in6_addr ipv6;
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res = inet_pton(AF_INET6, hostName.c_str(), &ipv6);
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if (res == 1)
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{
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// hostname is a valid IPv6
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memcpy(&_SockAddr6->sin6_addr, &ipv6, sizeof(in6_addr));
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}
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}
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if (res == 1)
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{
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// use IPv4 or IPv6 as hostname
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_HostName = hostName;
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}
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else
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{
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// Otherwise use the traditional DNS look-up
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struct addrinfo hints;
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@ -249,6 +343,9 @@ CInetAddress& CInetAddress::setByName( const std::string& hostName )
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throw ESocket( (string("Hostname resolution failed for ")+hostName).c_str() );
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}
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// hostname is valid, use it
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_HostName = hostName;
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struct addrinfo *p = res;
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// process all addresses
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@ -260,20 +357,14 @@ CInetAddress& CInetAddress::setByName( const std::string& hostName )
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// ipv4
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struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
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// convert the IP to a string
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_HostName = string(inet_ntoa(ipv4->sin_addr));
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memcpy( &_SockAddr->sin_addr, &ipv4->sin_addr, sizeof(in_addr) );
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}
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else if (p->ai_family == AF_INET6)
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{
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// ipv6
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// TODO: modify class to be able to handle IPv6
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struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
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// struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
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// convert the IP to a string
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// inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
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// memcpy( &_SockAddr->sin_addr, &ipv6->sin_addr, sizeof(in_addr) );
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memcpy( &_SockAddr6->sin6_addr, &ipv6->sin6_addr, sizeof(in6_addr) );
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}
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// process next address
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@ -283,11 +374,7 @@ CInetAddress& CInetAddress::setByName( const std::string& hostName )
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// free the linked list
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freeaddrinfo(res);
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}
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else
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{
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_HostName = hostName;
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memcpy( &_SockAddr->sin_addr, &iaddr, sizeof(iaddr) );
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}
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_Valid = true;
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return *this;
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}
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@ -299,7 +386,7 @@ CInetAddress& CInetAddress::setByName( const std::string& hostName )
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void CInetAddress::setPort(uint16 port)
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{
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_SockAddr->sin_port = htons(port);
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_SockAddr6->sin6_port = htons(port);
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}
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@ -310,12 +397,37 @@ void CInetAddress::setSockAddr( const sockaddr_in* saddr )
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{
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memcpy(_SockAddr, saddr, sizeof(*saddr) );
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// invalid IPv6
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memset(&_SockAddr6->sin6_addr, 0, sizeof(in6_addr));
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// Get host name
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// Warning: when it can't find it, it take more than 4 seconds
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if ( CInetAddress::RetrieveNames )
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{
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updateHostName();
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}
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_Valid = true;
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}
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/* Sets internal socket address directly (contents is copied).
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* It also retrieves the host name if CInetAddress::RetrieveNames is true.
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*/
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void CInetAddress::setSockAddr6( const sockaddr_in6* saddr6 )
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{
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memcpy( _SockAddr6, saddr6, sizeof(*saddr6) );
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// invalid IPv4
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memset(&_SockAddr->sin_addr, 0, sizeof(in_addr));
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// Get host name
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// Warning: when it can't find it, it take more than 4 seconds
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if ( CInetAddress::RetrieveNames )
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{
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updateHostName();
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}
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_Valid = true;
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}
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@ -330,7 +442,7 @@ bool CInetAddress::isValid() const
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/*
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* Returns internal socket address (read only)
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* Returns internal IPv4 socket address (read only)
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*/
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const sockaddr_in *CInetAddress::sockAddr() const
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{
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@ -338,6 +450,15 @@ const sockaddr_in *CInetAddress::sockAddr() const
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}
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/*
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* Returns internal IPv6 socket address (read only)
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*/
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const sockaddr_in6 *CInetAddress::sockAddr6() const
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{
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return _SockAddr6;
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}
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/*
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* Returns internal IP address
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*/
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@ -383,10 +504,13 @@ uint32 CInetAddress::internalNetAddress() const
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*/
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string CInetAddress::ipAddress() const
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{
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/*stringstream ss; // or use inet_ntoa
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ss << inet_ntoa ( _SockAddr->sin_addr );
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return ss.str();*/
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const char *name = inet_ntoa ( _SockAddr->sin_addr );
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// longer size is IPv6
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char straddr[INET6_ADDRSTRLEN];
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const char *name = inet_ntop(AF_INET, &_SockAddr->sin_addr, straddr, INET_ADDRSTRLEN);
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// IPv4 is invalid, return IPv6
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if (name == NULL || strcmp(name, "0.0.0.0") == 0) name = inet_ntop(AF_INET6, &_SockAddr6->sin6_addr, straddr, INET6_ADDRSTRLEN);
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return name ? string (name) : "";
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}
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@ -414,9 +538,6 @@ uint16 CInetAddress::port() const
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*/
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std::string CInetAddress::asString() const
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{
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// stringstream ss;
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// ss << hostName() << ":" << port() << " (" << ipAddress() << ")";
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// return ss.str();
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return hostName() + ":" + NLMISC::toString(port()) + " (" + ipAddress() + ")";
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}
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@ -426,9 +547,6 @@ std::string CInetAddress::asString() const
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*/
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std::string CInetAddress::asIPString() const
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{
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// stringstream ss;
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// ss << ipAddress() << ":" << port();
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// return ss.str();
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return ipAddress() + ":" + NLMISC::toString(port());
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}
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@ -537,13 +655,9 @@ std::vector<CInetAddress> CInetAddress::localAddresses()
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else if (p->ai_family == AF_INET6)
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{
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// ipv6
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// TODO: modify class to be able to handle IPv6
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struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
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// struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
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// convert the IP to a string
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// inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
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// memcpy( &_SockAddr->sin_addr, &ipv6->sin_addr, sizeof(in_addr) );
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vect.push_back( CInetAddress( &ipv6->sin6_addr, localhost ) );
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}
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// process next address
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