static foreign_t
pl_bind(term_t Socket, term_t Address)
{ struct sockaddr_in sockaddr;
int socket;
memset(&sockaddr, 0, sizeof(sockaddr));
if ( !tcp_get_socket(Socket, &socket) ||
!nbio_get_sockaddr(Address, &sockaddr) )
return FALSE;
if ( nbio_bind(socket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) < 0 )
return FALSE;
if ( PL_is_variable(Address) )
{ SOCKET fd = nbio_fd(socket);
struct sockaddr_in addr;
#ifdef __WINDOWS__
int len = sizeof(addr);
#else
socklen_t len = sizeof(addr);
#endif
if ( getsockname(fd, (struct sockaddr *) &addr, &len) )
return nbio_error(errno, TCP_ERRNO);
return PL_unify_integer(Address, ntohs(addr.sin_port));
}
return TRUE;
}
static foreign_t
udp_send(term_t Socket, term_t Data, term_t To, term_t Options)
{ struct sockaddr_in sockaddr;
#ifdef __WINDOWS__
int alen = sizeof(sockaddr);
#else
int alen = sizeof(sockaddr);
#endif
int socket;
int flags = 0L;
char *data;
size_t dlen;
ssize_t n;
if ( !PL_get_nchars(Data, &dlen, &data, CVT_ALL|CVT_EXCEPTION) )
return FALSE;
if ( !tcp_get_socket(Socket, &socket) ||
!nbio_get_sockaddr(To, &sockaddr) )
return FALSE;
if ( (n=nbio_sendto(socket, data,
(int)dlen,
flags,
(struct sockaddr*)&sockaddr, alen)) == -1 )
return nbio_error(errno, TCP_ERRNO);
return TRUE;
}
static foreign_t
pl_connect(term_t Socket, term_t Address)
{ int sock;
struct sockaddr_in sockaddr;
if ( !tcp_get_socket(Socket, &sock) ||
!nbio_get_sockaddr(Address, &sockaddr) )
return FALSE;
if ( nbio_connect(sock, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == 0 )
return TRUE;
return FALSE;
}
static foreign_t
udp_receive(term_t Socket, term_t Data, term_t From, term_t options)
{ struct sockaddr_in sockaddr;
#ifdef __WINDOWS__
int alen = sizeof(sockaddr);
#else
socklen_t alen = sizeof(sockaddr);
#endif
int socket;
int flags = 0;
char buf[UDP_MAXDATA];
ssize_t n;
int as = PL_STRING;
if ( !PL_get_nil(options) )
{ term_t tail = PL_copy_term_ref(options);
term_t head = PL_new_term_ref();
term_t arg = PL_new_term_ref();
while(PL_get_list(tail, head, tail))
{ atom_t name;
int arity;
if ( PL_get_name_arity(head, &name, &arity) && arity == 1 )
{ _PL_get_arg(1, head, arg);
if ( name == ATOM_as )
{ atom_t a;
if ( !PL_get_atom(arg, &a) )
return pl_error(NULL, 0, NULL, ERR_TYPE, head, "atom");
if ( a == ATOM_atom )
as = PL_ATOM;
else if ( a == ATOM_codes )
as = PL_CODE_LIST;
else if ( a == ATOM_string )
as = PL_STRING;
else
return pl_error(NULL, 0, NULL, ERR_DOMAIN, arg, "as_option");
}
} else
return pl_error(NULL, 0, NULL, ERR_TYPE, head, "option");
}
if ( !PL_get_nil(tail) )
return pl_error(NULL, 0, NULL, ERR_TYPE, tail, "list");
}
if ( !tcp_get_socket(Socket, &socket) ||
!nbio_get_sockaddr(From, &sockaddr) )
return FALSE;
if ( (n=nbio_recvfrom(socket, buf, sizeof(buf), flags,
(struct sockaddr*)&sockaddr, &alen)) == -1 )
return nbio_error(errno, TCP_ERRNO);
if ( !PL_unify_chars(Data, as, n, buf) )
return FALSE;
return unify_address(From, &sockaddr);
}
static foreign_t
udp_receive(term_t Socket, term_t Data, term_t From, term_t options)
{ struct sockaddr_in sockaddr;
#ifdef __WINDOWS__
int alen = sizeof(sockaddr);
#else
socklen_t alen = sizeof(sockaddr);
#endif
int socket;
int flags = 0;
char smallbuf[UDP_DEFAULT_BUFSIZE];
char *buf = smallbuf;
int bufsize = UDP_DEFAULT_BUFSIZE;
term_t varport = 0;
ssize_t n;
int as = PL_STRING;
int rc;
if ( !PL_get_nil(options) )
{ term_t tail = PL_copy_term_ref(options);
term_t head = PL_new_term_ref();
term_t arg = PL_new_term_ref();
while(PL_get_list(tail, head, tail))
{ atom_t name;
size_t arity;
if ( PL_get_name_arity(head, &name, &arity) && arity == 1 )
{ _PL_get_arg(1, head, arg);
if ( name == ATOM_as )
{ atom_t a;
if ( !PL_get_atom(arg, &a) )
return pl_error(NULL, 0, NULL, ERR_TYPE, head, "atom");
if ( a == ATOM_atom )
as = PL_ATOM;
else if ( a == ATOM_codes )
as = PL_CODE_LIST;
else if ( a == ATOM_string )
as = PL_STRING;
else
return pl_error(NULL, 0, NULL, ERR_DOMAIN, arg, "as_option");
} else if ( name == ATOM_max_message_size )
{ if ( !PL_get_integer(arg, &bufsize) )
return pl_error(NULL, 0, NULL, ERR_TYPE, arg, "integer");
if ( bufsize < 0 || bufsize > UDP_MAXDATA )
return pl_error(NULL, 0, NULL, ERR_DOMAIN, arg, "0 - 65535");
}
} else
return pl_error(NULL, 0, NULL, ERR_TYPE, head, "option");
}
if ( !PL_get_nil(tail) )
return pl_error(NULL, 0, NULL, ERR_TYPE, tail, "list");
}
if ( !tcp_get_socket(Socket, &socket) ||
!nbio_get_sockaddr(From, &sockaddr, &varport) )
return FALSE;
if ( bufsize > UDP_DEFAULT_BUFSIZE )
{ if ( !(buf = malloc(bufsize)) )
return pl_error(NULL, 0, NULL, ERR_RESOURCE, "memory");
}
if ( (n=nbio_recvfrom(socket, buf, bufsize, flags,
(struct sockaddr*)&sockaddr, &alen)) == -1 )
{ rc = nbio_error(errno, TCP_ERRNO);
goto out;
}
rc = ( PL_unify_chars(Data, as, n, buf) &&
unify_address(From, &sockaddr)
);
out:
if ( buf != smallbuf )
free(buf);
return rc;
}
