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Add IPv6 support to net_bind()

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This commit is contained in:
Manuel Pégourié-Gonnard 2013-12-13 14:00:51 +01:00
parent 10934de1ca
commit 389ce63735
1 changed files with 59 additions and 0 deletions
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59
library/net.c
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@ -228,6 +228,64 @@ int net_connect( int *fd, const char *host, int port )
*/
int net_bind( int *fd, const char *bind_ip, int port )
{
#if defined(POLARSSL_HAVE_IPV6)
int ret = POLARSSL_ERR_NET_UNKNOWN_HOST;
struct addrinfo hints, *addr_list, *cur;
char port_str[6];
net_prepare();
/* getaddrinfo expects port as a string */
memset( port_str, 0, sizeof( port_str ) );
snprintf( port_str, sizeof( port_str ), "%d", port );
/* Bind to IPv6 and/or IPv4, but only in TCP */
memset( &hints, 0, sizeof( hints ) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
if( bind_ip == NULL )
hints.ai_flags = AI_PASSIVE;
if( getaddrinfo( bind_ip, port_str, &hints, &addr_list ) != 0 )
return( POLARSSL_ERR_NET_UNKNOWN_HOST );
/* Try the sockaddrs until a binding succeeds */
for( cur = addr_list; cur != NULL; cur = cur->ai_next )
{
*fd = socket( cur->ai_family, cur->ai_socktype, cur->ai_protocol );
if( *fd < 0 )
{
ret = POLARSSL_ERR_NET_SOCKET_FAILED;
continue;
}
if( bind( *fd, cur->ai_addr, cur->ai_addrlen ) != 0 )
{
close( *fd );
ret = POLARSSL_ERR_NET_BIND_FAILED;
continue;
}
if( listen( *fd, POLARSSL_NET_LISTEN_BACKLOG ) != 0 )
{
close( *fd );
ret = POLARSSL_ERR_NET_LISTEN_FAILED;
continue;
}
/* I we ever get there, it's a success */
ret = 0;
break;
}
freeaddrinfo( addr_list );
return( ret );
#else
/* Legacy IPv4-only version */
int n, c[4];
struct sockaddr_in server_addr;
@ -275,6 +333,7 @@ int net_bind( int *fd, const char *bind_ip, int port )
}
return( 0 );
#endif /* POLARSSL_HAVE_IPV6 */
}
/*