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[Emacs-diffs] Changes to emacs/lisp/gnus/dig.el [gnus-5_10-branch]
From: |
Andreas Schwab |
Subject: |
[Emacs-diffs] Changes to emacs/lisp/gnus/dig.el [gnus-5_10-branch] |
Date: |
Thu, 22 Jul 2004 13:15:14 -0400 |
Index: emacs/lisp/gnus/dig.el
diff -c /dev/null emacs/lisp/gnus/dig.el:1.1.2.1
*** /dev/null Thu Jul 22 16:46:07 2004
--- emacs/lisp/gnus/dig.el Thu Jul 22 16:45:46 2004
***************
*** 0 ****
--- 1,189 ----
+ ;;; dig.el --- Domain Name System dig interface
+ ;; Copyright (c) 2000, 2001, 2003 Free Software Foundation, Inc.
+
+ ;; Author: Simon Josefsson <address@hidden>
+ ;; Keywords: DNS BIND dig
+
+ ;; 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 2, 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., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+
+ ;;; Commentary:
+
+ ;; This provide an interface for "dig".
+ ;;
+ ;; For interactive use, try M-x dig and type a hostname. Use `q' to quit
+ ;; dig buffer.
+ ;;
+ ;; For use in elisp programs, call `dig-invoke' and use
+ ;; `dig-extract-rr' to extract resource records.
+
+ ;;; Release history:
+
+ ;; 2000-10-28 posted on gnu.emacs.sources
+
+ ;;; Code:
+
+ (eval-when-compile (require 'cl))
+
+ (defgroup dig nil
+ "Dig configuration.")
+
+ (defcustom dig-program "dig"
+ "Name of dig (domain information groper) binary."
+ :type 'file
+ :group 'dig)
+
+ (defcustom dig-dns-server nil
+ "DNS server to query.
+ If nil, use system defaults."
+ :type '(choice (const :tag "System defaults")
+ string)
+ :group 'dig)
+
+ (defcustom dig-font-lock-keywords
+ '(("^;; [A-Z]+ SECTION:" 0 font-lock-keyword-face)
+ ("^;;.*" 0 font-lock-comment-face)
+ ("^; <<>>.*" 0 font-lock-type-face)
+ ("^;.*" 0 font-lock-function-name-face))
+ "Default expressions to highlight in dig mode."
+ :type 'sexp
+ :group 'dig)
+
+ (defun dig-invoke (domain &optional
+ query-type query-class query-option
+ dig-option server)
+ "Call dig with given arguments and return buffer containing output.
+ DOMAIN is a string with a DNS domain. QUERY-TYPE is an optional string
+ with a DNS type. QUERY-CLASS is an optional string with a DNS class.
+ QUERY-OPTION is an optional string with dig \"query options\".
+ DIG-OPTIONS is an optional string with parameters for the dig program.
+ SERVER is an optional string with a domain name server to query.
+
+ Dig is an external program found in the BIND name server distribution,
+ and is a commonly available debugging tool."
+ (let (buf cmdline)
+ (setq buf (generate-new-buffer "*dig output*"))
+ (if dig-option (push dig-option cmdline))
+ (if query-option (push query-option cmdline))
+ (if query-class (push query-class cmdline))
+ (if query-type (push query-type cmdline))
+ (push domain cmdline)
+ (if server (push (concat "@" server) cmdline)
+ (if dig-dns-server (push (concat "@" dig-dns-server) cmdline)))
+ (apply 'call-process dig-program nil buf nil cmdline)
+ buf))
+
+ (defun dig-extract-rr (domain &optional type class)
+ "Extract resource records for DOMAIN, TYPE and CLASS from buffer.
+ Buffer should contain output generated by `dig-invoke'."
+ (save-excursion
+ (goto-char (point-min))
+ (if (re-search-forward
+ (concat domain "\\.?[\t ]+[0-9wWdDhHmMsS]+[\t ]+"
+ (upcase (or class "IN")) "[\t ]+" (upcase (or type "A")))
+ nil t)
+ (let (b e)
+ (end-of-line)
+ (setq e (point))
+ (beginning-of-line)
+ (setq b (point))
+ (when (search-forward " (" e t)
+ (search-forward " )"))
+ (end-of-line)
+ (setq e (point))
+ (buffer-substring b e))
+ (and (re-search-forward (concat domain "\\.?[\t ]+[0-9wWdDhHmMsS]+[\t
]+"
+ (upcase (or class "IN"))
+ "[\t ]+CNAME[\t ]+\\(.*\\)$") nil t)
+ (dig-extract-rr (match-string 1) type class)))))
+
+ (defun dig-rr-get-pkix-cert (rr)
+ (let (b e str)
+ (string-match "[^\t ]+[\t ]+[0-9wWdDhHmMsS]+[\t ]+IN[\t ]+CERT[\t
]+\\(1\\|PKIX\\)[\t ]+[0-9]+[\t ]+[0-9]+[\t ]+(?" rr)
+ (setq b (match-end 0))
+ (string-match ")" rr)
+ (setq e (match-beginning 0))
+ (setq str (substring rr b e))
+ (while (string-match "[\t \n\r]" str)
+ (setq str (replace-match "" nil nil str)))
+ str))
+
+ ;; XEmacs does it like this. For Emacs, we have to set the
+ ;; `font-lock-defaults' buffer-local variable.
+ (put 'dig-mode 'font-lock-defaults '(dig-font-lock-keywords t))
+
+ (put 'dig-mode 'mode-class 'special)
+
+ (defvar dig-mode-map nil)
+ (unless dig-mode-map
+ (setq dig-mode-map (make-sparse-keymap))
+ (suppress-keymap dig-mode-map)
+
+ (define-key dig-mode-map "q" 'dig-exit))
+
+ (defun dig-mode ()
+ "Major mode for displaying dig output."
+ (interactive)
+ (kill-all-local-variables)
+ (setq mode-name "dig")
+ (setq major-mode 'dig-mode)
+ (use-local-map dig-mode-map)
+ (buffer-disable-undo)
+ (unless (featurep 'xemacs)
+ (set (make-local-variable 'font-lock-defaults)
+ '(dig-font-lock-keywords t)))
+ (when (featurep 'font-lock)
+ (font-lock-set-defaults)))
+
+ (defun dig-exit ()
+ "Quit dig output buffer."
+ (interactive)
+ (kill-buffer (current-buffer)))
+
+ (defun dig (domain &optional
+ query-type query-class query-option dig-option server)
+ "Query addresses of a DOMAIN using dig, by calling `dig-invoke'.
+ Optional arguments are passed to `dig-invoke'."
+ (interactive "sHost: ")
+ (switch-to-buffer
+ (dig-invoke domain query-type query-class query-option dig-option server))
+ (goto-char (point-min))
+ (and (search-forward ";; ANSWER SECTION:" nil t)
+ (forward-line))
+ (dig-mode)
+ (setq buffer-read-only t)
+ (set-buffer-modified-p nil))
+
+ ;; named for consistency with query-dns in dns.el
+ (defun query-dig (domain &optional
+ query-type query-class query-option dig-option server)
+ "Query addresses of a DOMAIN using dig.
+ It works by calling `dig-invoke' and `dig-extract-rr'. Optional
+ arguments are passed to `dig-invoke' and `dig-extract-rr'. Returns
+ nil for domain/class/type queries that results in no data."
+ (let ((buffer (dig-invoke domain query-type query-class
+ query-option dig-option server)))
+ (when buffer
+ (switch-to-buffer buffer)
+ (let ((digger (dig-extract-rr domain query-type query-class)))
+ (kill-buffer buffer)
+ digger))))
+
+ (provide 'dig)
+
+ ;;; arch-tag: 1d61726e-9400-4013-9ae7-4035e0c7f7d6
+ ;;; dig.el ends here
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