(defun make-inet-address (dotted-quads)
"Return a vector of octets given a string DOTTED-QUADS in the format
-\"127.0.0.1\""
- (map 'vector
- #'parse-integer
- (split dotted-quads nil '(#\.))))
+\"127.0.0.1\". Signals an error if the string is malformed."
+ (declare (type string dotted-quads))
+ (labels ((oops ()
+ (error "~S is not a string designating an IP address."
+ dotted-quads))
+ (check (x)
+ (if (typep x '(unsigned-byte 8))
+ x
+ (oops))))
+ (let* ((s1 (position #\. dotted-quads))
+ (s2 (if s1 (position #\. dotted-quads :start (1+ s1)) (oops)))
+ (s3 (if s2 (position #\. dotted-quads :start (1+ s2)) (oops)))
+ (u0 (parse-integer dotted-quads :end s1))
+ (u1 (parse-integer dotted-quads :start (1+ s1) :end s2))
+ (u2 (parse-integer dotted-quads :start (1+ s2) :end s3)))
+ (multiple-value-bind (u3 end) (parse-integer dotted-quads :start (1+ s3) :junk-allowed t)
+ (unless (= end (length dotted-quads))
+ (oops))
+ (let ((vector (make-array 4 :element-type '(unsigned-byte 8))))
+ (setf (aref vector 0) (check u0)
+ (aref vector 1) (check u1)
+ (aref vector 2) (check u2)
+ (aref vector 3) (check u3))
+ vector)))))
+
+(define-condition unknown-protocol ()
+ ((name :initarg :name
+ :reader unknown-protocol-name))
+ (:report (lambda (c s)
+ (format s "Protocol not found: ~a" (prin1-to-string
+ (unknown-protocol-name c))))))
;;; getprotobyname only works in the internet domain, which is why this
;;; is here
;; for extra brownie points, could return canonical protocol name
;; and aliases as extra values
(let ((ent (sockint::getprotobyname name)))
+ (if (sb-alien::null-alien ent)
+ (error 'unknown-protocol :name name))
(sockint::protoent-proto ent)))
;;; our protocol provides make-sockaddr-for, size-of-sockaddr,