;(define-condition no-recovery-error (socket-error)) ; name server error
;(define-condition try-again-error (socket-error)) ; temporary
+(defun make-host-ent (h)
+ (if (sb-grovel::foreign-nullp h) (name-service-error "gethostbyname"))
+ (let* ((length (sockint::hostent-length h))
+ (aliases (loop for i = 0 then (1+ i)
+ for al = (sb-alien:deref (sockint::hostent-aliases h) i)
+ while al
+ collect al))
+ (addresses
+ (loop for i = 0 then (1+ i)
+ for ad = (sb-alien:deref (sockint::hostent-addresses h) i)
+ until (sb-alien:null-alien ad)
+ collect (ecase (sockint::hostent-type h)
+ (#.sockint::af-inet
+ (loop for i from 0 below length
+ collect (sb-alien:deref ad i)))
+ (#.sockint::af-local
+ (sb-alien:cast ad sb-alien:c-string))))))
+ (make-instance 'host-ent
+ :name (sockint::hostent-name h)
+ :type (sockint::hostent-type h)
+ :aliases aliases
+ :addresses addresses)))
+
(defun get-host-by-name (host-name)
"Returns a HOST-ENT instance for HOST-NAME or throws some kind of condition.
HOST-NAME may also be an IP address in dotted quad notation or some other
weird stuff - see gethostbyname(3) for grisly details."
- (let ((h (sockint::gethostbyname host-name)))
- (make-host-ent h)))
+ (make-host-ent (sockint::gethostbyname host-name)))
(defun get-host-by-address (address)
"Returns a HOST-ENT instance for ADDRESS, which should be a vector of
-(integer 0 255), or throws some kind of error. See gethostbyaddr(3) for
+ (integer 0 255), or throws some kind of error. See gethostbyaddr(3) for
grisly details."
- (let ((packed-addr (sockint::allocate-in-addr)))
- (loop for i from 0 to 3
- do (setf (sockint::in-addr-addr packed-addr i) (elt address i)))
- (make-host-ent
- (sb-sys:with-pinned-objects (packed-addr)
- (sockint::gethostbyaddr (sockint::array-data-address packed-addr)
- 4
- sockint::af-inet)))))
-
-(defun make-host-ent (h)
- (if (sockint::foreign-nullp h) (name-service-error "gethostbyname"))
- (let* ((local-h (sockint::foreign-vector h 1 sockint::size-of-hostent))
- (length (sockint::hostent-length local-h))
- (aliases
- (loop for i = 0 then (1+ i)
- for al = (sb-sys:sap-ref-sap
- (sb-sys:int-sap (sockint::hostent-aliases local-h))
- (* i 4))
- until (= (sb-sys:sap-int al) 0)
- collect (sb-c-call::%naturalize-c-string al)))
- (address0 (sb-sys:sap-ref-sap (sb-sys:int-sap (sockint::hostent-addresses local-h)) 0))
- (addresses
- (loop for i = 0 then (+ length i)
- for ad = (sb-sys:sap-ref-32 address0 i)
- while (> ad 0)
- collect
- (sockint::foreign-vector (sb-sys:sap+ address0 i) 1 length))))
- (make-instance 'host-ent
- :name (sb-c-call::%naturalize-c-string
- (sb-sys:int-sap (sockint::hostent-name local-h)))
- :type (sockint::hostent-type local-h)
- :aliases aliases
- :addresses addresses)))
+ (sockint::with-in-addr packed-addr ()
+ (let ((addr-vector (coerce address 'vector)))
+ (loop for i from 0 below (length addr-vector)
+ do (setf (sb-alien:deref (sockint::in-addr-addr packed-addr) i)
+ (elt addr-vector i)))
+ (make-host-ent (sockint::gethostbyaddr packed-addr
+ 4
+ sockint::af-inet)))))
;;; The remainder is my fault - gw
(defun get-name-service-error-message (num)
(hstrerror num))
)
-