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;;; eudcb-ph.el --- Emacs Unified Directory Client - CCSO PH/QI Backend
;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007 Free Software Foundation, Inc.
;; Author: Oscar Figueiredo <oscar@cpe.fr>
;; Maintainer: Pavel Janík <Pavel@Janik.cz>
;; Keywords: comm
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This library provides specific CCSO PH/QI protocol support for the
;; Emacs Unified Directory Client package.
;;; Code:
(require 'eudc)
;;{{{ Internal cooking
(eudc-protocol-set 'eudc-bbdb-conversion-alist 'eudc-ph-bbdb-conversion-alist 'ph)
(eudc-protocol-set 'eudc-query-function 'eudc-ph-query-internal 'ph)
(eudc-protocol-set 'eudc-list-attributes-function 'eudc-ph-get-field-list 'ph)
(eudc-protocol-set 'eudc-protocol-has-default-query-attributes t 'ph)
(defvar eudc-ph-process-buffer nil)
(defvar eudc-ph-read-point)
(defconst eudc-ph-default-server-port 105
"Default TCP port for CCSO PH/QI directory services.")
(defun eudc-ph-query-internal (query &optional return-fields)
"Query the PH/QI server with QUERY.
QUERY can be a string NAME or a list made of strings NAME
and/or cons cells (KEY . VALUE) where KEYs should be valid
CCSO database keys. NAME is equivalent to (DEFAULT . NAME),
where DEFAULT is the default key of the database.
RETURN-FIELDS is a list of database fields to return,
defaulting to `eudc-default-return-attributes'."
(let (request)
(if (null return-fields)
(setq return-fields eudc-default-return-attributes))
(if (eq 'all return-fields)
(setq return-fields '(all)))
(setq request
(concat "query "
(if (stringp query)
query
(mapconcat (function (lambda (elt)
(if (stringp elt) elt)
(format "%s=%s" (car elt) (cdr elt))))
query
" "))
(if return-fields
(concat " return " (mapconcat 'symbol-name return-fields " ")))))
(and (> (length request) 6)
(eudc-ph-do-request request)
(eudc-ph-parse-query-result return-fields))))
(defun eudc-ph-get-field-list (full-records)
"Return a list of valid field names for the current server.
If FULL-RECORDS is non-nil, full records including field description
are returned"
(interactive)
(eudc-ph-do-request "fields")
(if full-records
(eudc-ph-parse-query-result)
(mapcar 'eudc-caar (eudc-ph-parse-query-result))))
(defun eudc-ph-parse-query-result (&optional fields)
"Return a list of alists of key/values from in `eudc-ph-process-buffer'.
Fields not in FIELDS are discarded."
(let (record
records
line-regexp
current-key
key
value
ignore)
(save-excursion
(message "Parsing results...")
(set-buffer eudc-ph-process-buffer)
(goto-char (point-min))
(while (re-search-forward "^\\(-[0-9]+\\):\\([0-9]+\\):" nil t)
(catch 'ignore
(setq line-regexp (concat "^\\(-[0-9]+\\):" (match-string 2) ":[ \t]*\\([-a-zA-Z_]*\\)?:[ \t]*\\(.*\\)$"))
(beginning-of-line)
(setq record nil
ignore nil
current-key nil)
(while (re-search-forward line-regexp nil t)
(catch 'skip-line
(if (string= "-508" (match-string 1))
;; A field is missing in this entry. Skip it or skip the
;; whole record (see `eudc-strict-return-matches')
(if (not eudc-strict-return-matches)
(throw 'skip-line t)
(while (re-search-forward line-regexp nil t))
(setq ignore t)
(throw 'ignore t)))
(setq key (and (not (string= (match-string 2) ""))
(intern (match-string 2)))
value (match-string 3))
(if (and current-key
(eq key current-key))
(setq key nil)
(setq current-key key))
(if (or (null fields)
(eq 'all fields)
(memq current-key fields))
(if key
(setq record (cons (cons key value) record)) ; New key
(setcdr (car record) (if (listp (eudc-cdar record))
(append (eudc-cdar record) (list value))
(list (eudc-cdar record) value))))))))
(and (not ignore)
(or (null fields)
(eq 'all fields)
(setq record (nreverse record)))
(setq record (if (not (eq 'list eudc-duplicate-attribute-handling-method))
(eudc-filter-duplicate-attributes record)
(list record)))
(setq records (append record records)))))
(message "Done")
records))
(defun eudc-ph-do-request (request)
"Send REQUEST to the server.
Wait for response and return the buffer containing it."
(let (process
buffer)
(unwind-protect
(progn
(message "Contacting server...")
(setq process (eudc-ph-open-session))
(if process
(save-excursion
(set-buffer (setq buffer (process-buffer process)))
(eudc-ph-send-command process request)
(message "Request sent, waiting for reply...")
(eudc-ph-read-response process))))
(if process
(eudc-ph-close-session process)))
buffer))
(defun eudc-ph-open-session (&optional server)
"Open a connection to the given CCSO/QI SERVER.
SERVER is either a string naming the server or a list (NAME PORT)."
(let (process
host
port)
(catch 'done
(if (null server)
(setq server (or eudc-server
(call-interactively 'eudc-ph-set-server))))
(string-match "\\(.*\\)\\(:\\(.*\\)\\)?" server)
(setq host (match-string 1 server))
(setq port (or (match-string 3 server)
eudc-ph-default-server-port))
(setq eudc-ph-process-buffer (get-buffer-create (format " *PH-%s*" host)))
(save-excursion
(set-buffer eudc-ph-process-buffer)
(erase-buffer)
(setq eudc-ph-read-point (point))
(and (featurep 'xemacs) (featurep 'mule)
(set-buffer-file-coding-system 'binary t)))
(setq process (open-network-stream "ph" eudc-ph-process-buffer host port))
(if (null process)
(throw 'done nil))
(set-process-query-on-exit-flag process t)
process)))
(defun eudc-ph-close-session (process)
(save-excursion
(set-buffer (process-buffer process))
(eudc-ph-send-command process "quit")
(eudc-ph-read-response process)
(run-at-time 2 nil 'delete-process process)))
(defun eudc-ph-send-command (process command)
(goto-char (point-max))
(process-send-string process command)
(process-send-string process "\r\n")
)
(defun eudc-ph-read-response (process &optional return-response)
"Read a response from the PH/QI query process PROCESS.
Returns nil if response starts with an error code. If the
response is successful the return code or the response itself is returned
depending on RETURN-RESPONSE."
(let ((case-fold-search nil)
return-code
match-end)
(goto-char eudc-ph-read-point)
;; CCSO protocol : response complete if status >= 200
(while (not (re-search-forward "^\\(^[2-5].*\\):.*\n" nil t))
(accept-process-output process)
(goto-char eudc-ph-read-point))
(setq match-end (point))
(goto-char eudc-ph-read-point)
(if (and (setq return-code (match-string 1))
(setq return-code (string-to-number return-code))
(>= (abs return-code) 300))
(progn (setq eudc-ph-read-point match-end) nil)
(setq eudc-ph-read-point match-end)
(if return-response
(buffer-substring (point) match-end)
return-code))))
;;}}}
;;{{{ High-level interfaces (interactive functions)
(defun eudc-ph-customize ()
"Customize the EUDC PH support."
(interactive)
(customize-group 'eudc-ph))
(defun eudc-ph-set-server (server)
"Set the PH server to SERVER."
(interactive "sNew PH/QI Server: ")
(message "Selected PH/QI server is now %s" server)
(eudc-set-server server 'ph))
;;}}}
(eudc-register-protocol 'ph)
(provide 'eudcb-ph)
;;; arch-tag: 4365bbf5-af20-453e-b5b6-2e7118ebfcdb
;;; eudcb-ph.el ends here
|
