(in-package :sb-bsd-sockets)
-#|| <a name="name-service"><h2>Name Service</h2></a>
-
-<p>Presently name service is implemented by calling whatever
-gethostbyname(2) uses. This may be any or all of /etc/hosts, NIS, DNS,
-or something completely different. Typically it's controlled by
-/etc/nsswitch.conf
-
-<p> Direct links to the asynchronous resolver(3) routines would be nice to have
-eventually, so that we can do DNS lookups in parallel with other things
-|#
(defclass host-ent ()
((name :initarg :name :accessor host-ent-name)
(aliases :initarg :aliases :accessor host-ent-aliases)
(address-type :initarg :type :accessor host-ent-address-type)
; presently always AF_INET
- (addresses :initarg :addresses :accessor host-ent-addresses)))
+ (addresses :initarg :addresses :accessor host-ent-addresses))
+ ;; FIXME: Our Texinfo documentation extracter need at least his to spit
+ ;; out the signature. Real documentation would be better...
+ (:documentation ""))
-(defgeneric host-ent-address (host-ent))
+(defgeneric host-ent-address (host-ent)
+ ;; FIXME: Our Texinfo documentation extracter need at least his to spit
+ ;; out the signature. Real documentation would be better...
+ (:documentation ""))
-(defmethod host-ent-address ((host-ent host-ent))
+(defmethod host-ent-address ((host-ent host-ent))
(car (host-ent-addresses host-ent)))
;(define-condition host-not-found-error (socket-error)) ; host unknown
;(define-condition no-recovery-error (socket-error)) ; name server error
;(define-condition try-again-error (socket-error)) ; temporary
-(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."
- (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
-grisly details."
- (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)))))
-
(defun make-host-ent (h)
(if (sb-grovel::foreign-nullp h) (name-service-error "gethostbyname"))
(let* ((length (sockint::hostent-length h))
for al = (sb-alien:deref (sockint::hostent-aliases h) i)
while al
collect al))
- (address0 (sockint::hostent-addresses h))
(addresses
(loop for i = 0 then (1+ i)
- for ad = (sb-alien:deref address0 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)))
+ (assert (= length 4))
+ (let ((addr (make-array 4 :element-type '(unsigned-byte 8))))
+ (loop for i from 0 below length
+ do (setf (elt addr i) (sb-alien:deref ad i)))
+ addr))
(#.sockint::af-local
(sb-alien:cast ad sb-alien:c-string))))))
(make-instance 'host-ent
: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."
+ (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
+grisly details."
+ (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
(defvar *name-service-errno* 0
GET-NAME-SERVICE-ERRNO")
(defun name-service-error (where)
+ ;; FIXME: Our Texinfo documentation extracter need at least his to spit
+ ;; out the signature. Real documentation would be better...
+ ""
(get-name-service-errno)
;; Comment next to NETDB_INTERNAL in netdb.h says "See errno.".
;; This special case treatment hasn't actually been tested yet.