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Fixed: #1073 Replace deprecated functions gethostbyname and gethostbyaddr

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This commit is contained in:
kervala 2010-08-18 18:31:05 +02:00
parent b1854065cf
commit 9fde74ff28
2 changed files with 117 additions and 51 deletions
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3
code/nel/include/nel/net/inet_address.h
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@ -143,6 +143,9 @@ protected:
/// Constructor with ip address, port=0
CInetAddress( const in_addr *ip, const char *hostname = 0);
/// Update _HostName from _SockAddr
void updateHostName();
private:
// Called in all constructors. Calls CBaseSocket::init().

155
code/nel/src/net/inet_address.cpp
View file

@ -27,6 +27,8 @@
#ifdef NL_OS_WINDOWS
# include <winsock2.h>
# include <ws2tcpip.h>
// for Windows 2000 compatibility
# include <wspiapi.h>
#elif defined NL_OS_UNIX
# include <unistd.h>
# include <sys/socket.h>
@ -40,6 +42,9 @@
using namespace std;
using namespace NLMISC;
#ifndef NI_MAXHOST
# define NI_MAXHOST 1025
#endif
namespace NLNET
{
@ -74,17 +79,29 @@ CInetAddress::CInetAddress( const in_addr *ip, const char *hostname )
}
else
{
hostent *phostent = gethostbyaddr( (char*)&ip->s_addr, 4, AF_INET );
if ( phostent == NULL )
updateHostName();
}
_Valid = true;
}
/*
* Update _HostName from _SockAddr current value
*/
void CInetAddress::updateHostName()
{
char host[NI_MAXHOST];
sint status = getnameinfo((struct sockaddr *) _SockAddr, sizeof (struct sockaddr), host, NI_MAXHOST, NULL, 0, NI_NUMERICSERV);
if ( status )
{
_HostName = ipAddress();
}
else
{
_HostName = string( phostent->h_name );
_HostName = string( host );
}
}
_Valid = true;
}
@ -148,16 +165,6 @@ bool operator==( const CInetAddress& a1, const CInetAddress& a2 )
*/
bool operator<( const CInetAddress& a1, const CInetAddress& a2 )
{
#ifdef NL_OS_WINDOWS
if ( a1._SockAddr->sin_addr.S_un.S_addr == a2._SockAddr->sin_addr.S_un.S_addr )
{
return ( a1.port() < a2.port() );
}
else
{
return ( a1._SockAddr->sin_addr.S_un.S_addr < a2._SockAddr->sin_addr.S_un.S_addr );
}
#elif defined NL_OS_UNIX
if ( a1._SockAddr->sin_addr.s_addr == a2._SockAddr->sin_addr.s_addr )
{
return ( a1.port() < a2.port() );
@ -166,7 +173,6 @@ bool operator<( const CInetAddress& a1, const CInetAddress& a2 )
{
return ( a1._SockAddr->sin_addr.s_addr < a2._SockAddr->sin_addr.s_addr );
}
#endif
}
@ -223,26 +229,59 @@ CInetAddress& CInetAddress::setByName( const std::string& hostName )
{
// Try to convert directly for addresses such as a.b.c.d
in_addr iaddr;
#ifdef NL_OS_WINDOWS
iaddr.S_un.S_addr = inet_addr( hostName.c_str() );
if ( iaddr.S_un.S_addr == INADDR_NONE )
#elif defined NL_OS_UNIX
iaddr.s_addr = inet_addr( hostName.c_str() );
if ( iaddr.s_addr == INADDR_NONE )
#endif
{
// Otherwise use the traditional DNS look-up
hostent *phostent = gethostbyname( hostName.c_str() );
if ( phostent == NULL )
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; // AF_INET or AF_INET6 to force version
hints.ai_socktype = SOCK_STREAM;
struct addrinfo *res = NULL;
sint status = getaddrinfo(hostName.c_str(), NULL, &hints, &res);
if (status)
{
_Valid = false;
LNETL0_DEBUG( "LNETL0: Network error: resolution of hostname '%s' failed", hostName.c_str() );
LNETL0_DEBUG( "LNETL0: Network error: resolution of hostname '%s' failed: %s", hostName.c_str(), gai_strerror(status) );
// return *this;
throw ESocket( (string("Hostname resolution failed for ")+hostName).c_str() );
}
_HostName = string( phostent->h_name );
memcpy( &_SockAddr->sin_addr, phostent->h_addr, sizeof(in_addr) );
struct addrinfo *p = res;
// process all addresses
while (p != NULL)
{
// check address family
if (p->ai_family == AF_INET)
{
// ipv4
struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
// convert the IP to a string
_HostName = string(inet_ntoa(ipv4->sin_addr));
memcpy( &_SockAddr->sin_addr, &ipv4->sin_addr, sizeof(in_addr) );
}
else if (p->ai_family == AF_INET6)
{
// ipv6
// TODO: modify class to be able to handle IPv6
// struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
// convert the IP to a string
// inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
// memcpy( &_SockAddr->sin_addr, &ipv6->sin_addr, sizeof(in_addr) );
}
// process next address
p = p->ai_next;
}
// free the linked list
freeaddrinfo(res);
}
else
{
@ -275,15 +314,7 @@ void CInetAddress::setSockAddr( const sockaddr_in* saddr )
// Warning: when it can't find it, it take more than 4 seconds
if ( CInetAddress::RetrieveNames )
{
hostent *phostent = gethostbyaddr( (char*)&saddr->sin_addr.s_addr, 4, AF_INET );
if ( phostent == NULL )
{
_HostName = ipAddress();
}
else
{
_HostName = string( phostent->h_name );
}
updateHostName();
}
_Valid = true;
}
@ -476,20 +507,52 @@ std::vector<CInetAddress> CInetAddress::localAddresses()
// 2. Get address list
vector<CInetAddress> vect;
uint i = 0;
for(;;)
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; // AF_INET or AF_INET6 to force version
hints.ai_socktype = SOCK_STREAM;
struct addrinfo *res = NULL;
sint status = getaddrinfo(localhost, NULL, &hints, &res);
if (status)
{
hostent *phostent = gethostbyname( localhost );
if ( phostent == NULL ) // will come here if the local hostname (/etc/hostname in Linux) is not the real name
// will come here if the local hostname (/etc/hostname in Linux) is not the real name
throw ESocket( (string("Hostname resolution failed for ")+string(localhost)).c_str() );
if (phostent->h_addr_list[i] == 0)
break;
vect.push_back( CInetAddress( (const in_addr*)(phostent->h_addr_list[i]), localhost ) );
i++;
}
struct addrinfo *p = res;
// process all addresses
while (p != NULL)
{
// check address family
if (p->ai_family == AF_INET)
{
// ipv4
struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
vect.push_back( CInetAddress( &ipv4->sin_addr, localhost ) );
}
else if (p->ai_family == AF_INET6)
{
// ipv6
// TODO: modify class to be able to handle IPv6
// struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
// convert the IP to a string
// inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
// memcpy( &_SockAddr->sin_addr, &ipv6->sin_addr, sizeof(in_addr) );
}
// process next address
p = p->ai_next;
}
// free the linked list
freeaddrinfo(res);
if(vect.empty())
{
throw ESocket( (string("No network card detected for ")+string(localhost)).c_str() );