;;; XXX should we *...* this?
(defparameter inet-address-any (vector 0 0 0 0))
+(defmethod socket-namestring ((socket inet-socket))
+ (ignore-errors
+ (multiple-value-bind (addr port) (socket-name socket)
+ (format nil "~{~A~^.~}:~A" (coerce addr 'list) port))))
+
+(defmethod socket-peerstring ((socket inet-socket))
+ (ignore-errors
+ (multiple-value-bind (addr port) (socket-peername socket)
+ (format nil "~{~A~^.~}:~A" (coerce addr 'list) port))))
+
;;; binding a socket to an address and port. Doubt that anyone's
;;; actually using this much, to be honest.
(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))))))
+
+#+(and sb-thread (not os-provides-getprotoby-r))
+;; Since getprotobyname is not thread-safe, we need a lock.
+(sb-ext:defglobal **getprotoby-lock** (sb-thread:make-mutex :name "getprotoby lock"))
;;; getprotobyname only works in the internet domain, which is why this
;;; is here
(defun get-protocol-by-name (name) ;exported
- "Returns the network protocol number associated with the string NAME,
-using getprotobyname(2) which typically looks in NIS or /etc/protocols"
- ;; for extra brownie points, could return canonical protocol name
- ;; and aliases as extra values
- (let ((ent (sockint::getprotobyname name)))
- (sockint::protoent-proto ent)))
+ "Given a protocol name, return the protocol number, the protocol name, and
+a list of protocol aliases"
+
+ ;; Brownie Points. Hopefully there's one person out there using
+ ;; RSPF sockets and SBCL who will appreciate the extra info
+ (labels ((protoent-to-values (protoent)
+ (values
+ (sockint::protoent-proto protoent)
+ (sockint::protoent-name protoent)
+ (let ((index 0))
+ (loop
+ for alias = (sb-alien:deref
+ (sockint::protoent-aliases protoent) index)
+ while (not (sb-alien:null-alien alias))
+ do (incf index)
+ collect (sb-alien::c-string-to-string
+ (sb-alien:alien-sap alias)
+ (sb-impl::default-external-format)
+ 'character))))))
+ #+(and sb-thread os-provides-getprotoby-r)
+ (let ((buffer-length 1024)
+ (max-buffer 10000)
+ (result-buf nil)
+ (buffer nil)
+ #-solaris
+ (result nil))
+ (declare (type fixnum buffer-length)
+ (type fixnum max-buffer))
+ (loop
+ (unwind-protect
+ (progn
+ (setf result-buf (sb-alien:make-alien sockint::protoent)
+ buffer (sb-alien:make-alien sb-alien:char buffer-length))
+ #-solaris
+ (setf result (sb-alien:make-alien (* sockint::protoent)))
+ (when (or (sb-alien:null-alien result-buf)
+ (sb-alien:null-alien buffer)
+ (sb-alien:null-alien result))
+ (error "Could not allocate foreign memory."))
+ (let ((res (sockint::getprotobyname-r
+ name result-buf buffer buffer-length #-solaris result)))
+ (cond ((eql res 0)
+ #-solaris
+ (when (sb-alien::null-alien (sb-alien:deref result 0))
+ (error 'unknown-protocol :name name))
+ (return-from get-protocol-by-name
+ (protoent-to-values result-buf)))
+ (t
+ (let ((errno (sb-unix::get-errno)))
+ (cond ((eql errno sockint::erange)
+ (incf buffer-length 1024)
+ (when (> buffer-length max-buffer)
+ (error "Exceeded max-buffer of ~d" max-buffer)))
+ (t
+ (error "Unexpected errno ~d" errno))))))))
+ (when result-buf
+ (sb-alien:free-alien result-buf))
+ (when buffer
+ (sb-alien:free-alien buffer))
+ #-solaris
+ (when result
+ (sb-alien:free-alien result)))))
+ #-(and sb-thread os-provides-getprotoby-r)
+ (tagbody
+ (flet ((get-it ()
+ (let ((ent (sockint::getprotobyname name)))
+ (if (sb-alien::null-alien ent)
+ (go :error)
+ (return-from get-protocol-by-name (protoent-to-values ent))))))
+ #+sb-thread
+ (sb-thread::with-system-mutex (**getprotoby-lock**)
+ (get-it))
+ #-sb-thread
+ (get-it))
+ :error
+ (error 'unknown-protocol :name name))))
;;; our protocol provides make-sockaddr-for, size-of-sockaddr,
;;; bits-of-sockaddr
projects / sbcl.git / blobdiff