Merge branch 'master' of ssh://dave@fo.am/var/git/groworld
This commit is contained in:
commit
94abe40b9e
1 changed files with 61 additions and 61 deletions
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@ -1,6 +1,19 @@
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;;; A basic XMPP library which should conform to RFCs 3920 and 3921
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;;;
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;;; Copyright (C) 2009 FoAM vzw. LGPL.
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;;; Copyright (C) 2009 FoAM vzw.
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;;;
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;;; This package is free software: you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public
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;;; License as published by the Free Software Foundation, either
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;;; version 3 of the License, or (at your option) any later version.
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;;;
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;; Lesser General Public License for more details.
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;;;
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;;; You can find a copy of the GNU Lesser General Public License at
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;;; http://www.gnu.org/licenses/lgpl-3.0.html.
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;;;
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;;; Authors
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;;;
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@ -8,15 +21,15 @@
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;;;
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;;; Requirements
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;;;
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;;; PLT for now.
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;;; PLT for now. TLS requires a version of PLT > 4.1.5.3
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;;;
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;;; Commentary
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;;;
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;;; Still a long way from implementing even a minimal subset of XMPP
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;;;
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;;; features implemented
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;;; - establish plaintext connections on port 5222
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;;; - partial "old sytle" ssl connections on port 5223
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;;; - plaintext sessions on port 5222
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;;; - "old sytle" ssl sessions on port 5223
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;;; - authenticate using an existing account
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;;; - send messages (rfc 3921 sec.4)
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;;; - send presence (rfc 3921 sec.5)
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@ -25,9 +38,9 @@
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;;;
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;;; features to implement
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;;; - account creation
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;;; - managing subscription (rfc 3921 sec.6)
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;;; - managing subscriptions (rfc 3921 sec.6)
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;;; - rosters (rfc 3921 sec.7)
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;;; - plaintext/ssl/tls negotiation (rfc 3920 sec.5 & 6)
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;;; - plaintext/tls/sasl negotiation (rfc 3920 sec.5 & 6)
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;;; - encrypted connections using tls on port 5222
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;;; - correct namespaces in sxml
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;;; - message types
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@ -39,11 +52,10 @@
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;;; - rfc 3920
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;;; - rfc 3921
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;;;
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;;; bugs and/or improvements
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;;; bugs and/or improvements
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;;; - read-async & repsonse-handler
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;;; - ssax:xml->sxml or lazy:xml->sxml
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;;; - default handlers
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;;; - ssl read/write sequence
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;;; - chatbot exmples
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;;;
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@ -55,7 +67,6 @@
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;with-xmpp-session
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)
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(require (planet lizorkin/sxml:2:1/sxml))
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(require (planet lizorkin/ssax:2:0/ssax))
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(require mzlib/os)
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@ -73,11 +84,6 @@
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(define port 5222)
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(define ssl-port 5223)
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(define ssl-write-flag #t) ;; semaphore for half-duplex ssl
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(define (ssl-write b)
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(set! ssl-write-flag b))
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(define (open-connection machine port handler)
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(let-values (((in out)
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(tcp-connect machine port)))
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@ -93,14 +99,12 @@
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(close-input-port in)))
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(define (read-async in)
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(define bstr (make-bytes 0 0))
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(when (byte-ready? in)
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(if (eq? (peek-byte in) eof)
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(break-thread (current-thread))
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(begin
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(set! bstr (bytes-append bstr
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(make-bytes 1 (read-byte in))
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(read-async in)))))) bstr)
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(bytes->string/utf-8 (list->bytes (read-async-bytes in))))
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(define (read-async-bytes in)
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(let ((bstr '()))
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(when (sync/timeout 0 in)
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(set! bstr (cons (read-byte in) (read-async-bytes in)))) bstr))
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(define ssxml srl:sxml->xml-noindent)
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@ -128,7 +132,7 @@
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(define (starttls) "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>")
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;; messages
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;; messages
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(define (message to body)
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(ssxml `(message (@ (to ,to)) (body ,body))))
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@ -194,7 +198,6 @@
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(define (parse-xmpp-response str)
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(when (> (string-length str) 0)
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(newline)
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(let ((sz (ssax:xml->sxml (open-input-string (clean str)) '())))
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;;(let ((sz (lazy:xml->sxml (open-input-string str) '())))
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(cond
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(display (format "a ~a message from ~a which says '~a.'~%" (message-type sz) (message-from sz) (message-body sz))))
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(define (print-iq sz)
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(display (format "an iq response of type '~a' with id '~a.'~%" (iq-type sz) (iq-id sz))))
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(display (format "an iq response of type '~a' with id '~a.'~%" (iq-type sz) (iq-id sz))))
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(define (print-presence sz)
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(display (format " p-r-e-s-e-n-e-c--> ~a is ~a" (presence-from sz) (presence-status))))
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;; QND hack to filter out anything not a message, iq or presence
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(define (clean str)
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(let ((test (substring str 0 3)))
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(cond ((string-ci=? test "<me") str)
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((string-ci=? test "<iq") str)
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((string-ci=? test "<pr") str)
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(else "<null/>"))))
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(cond ((string-ci=? test "<me") str)
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((string-ci=? test "<iq") str)
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((string-ci=? test "<pr") str)
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(else "<null/>"))))
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;; repsonse handler
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;; response handler
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(define (xmpp-response-handler in)
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(thread (lambda ()
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(let loop ()
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(when ssl-write-flag
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(parse-xmpp-response (bytes->string/utf-8 (read-async in))))
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(sleep 0.1)
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(parse-xmpp-response (read-async in))
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(sleep 0.1) ;; slight delay to avoid a tight loop
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(loop)))))
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;; ideally something like this would work.. .
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(define (xmmp-read-stanza in)
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(parse-xmpp-response (read-line in)))
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;; jid splicing (assuming the jid is in the format user@host/resource)
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(define (jid-user jid)
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(string-take jid (string-index jid #\@)))
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(let ((v (string-index jid #\/)))
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(when v (string-take-right jid (- (string-length jid) v 1)))))
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;;;; ;; ; ; ;; ;; ;;;; ;
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;;
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;; interfaces
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(user (jid-user ,jid))
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(resource (jid-resource ,jid)))
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(let-values (((in out)
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;;(ssl-connect host ssl-port 'tls)))
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(tcp-connect host port)))
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(define (send str) (fprintf out "~A~%" str))
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(ssl-connect host ssl-port 'tls)))
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;;(tcp-connect host port)))
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(define (send str) (fprintf out "~A~%" str) (flush-output out))
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(file-stream-buffer-mode out 'line)
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(xmpp-response-handler in)
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(send (xmpp-stream host))
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(close-input-port in))))
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) ;; end module
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) ;; end module
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