X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-int.el;h=420b1ace5b030b7776e82f06d5c1c00fa27ae8d7;hb=e405b22c6b46721607c5e6c712a4705c23dee751;hp=027adb4854a7fb21cd1f2b9ae6034bb4cf200b58;hpb=03551fdba7d496a4ff418d39f289057921bfe4e4;p=gnus

diff --git a/lisp/gnus-int.el b/lisp/gnus-int.el
index 027adb485..420b1ace5 100644
--- a/lisp/gnus-int.el
+++ b/lisp/gnus-int.el
@@ -1,7 +1,8 @@
-;;; gnus-int.el --- backend inteface functions for Gnus
-;; Copyright (C) 1996 Free Software Foundation, Inc.
+;;; gnus-int.el --- backend interface functions for Gnus
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+;;        Free Software Foundation, Inc.
 
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; Keywords: news
 
 ;; This file is part of GNU Emacs.
@@ -25,11 +26,35 @@
 
 ;;; Code:
 
-(require 'gnus-load)
-(require 'gnus)
+(eval-when-compile (require 'cl))
 
-(defvar gnus-open-server-hook nil
-  "*A hook called just before opening connection to the news server.")
+(require 'gnus)
+(require 'message)
+(require 'gnus-range)
+
+(autoload 'gnus-agent-expire "gnus-agent")
+(autoload 'gnus-agent-regenerate-group "gnus-agent")
+(autoload 'gnus-agent-read-servers-validate-native "gnus-agent")
+
+(defcustom gnus-open-server-hook nil
+  "Hook called just before opening connection to the news server."
+  :group 'gnus-start
+  :type 'hook)
+
+(defcustom gnus-server-unopen-status nil
+  "The default status if the server is not able to open.
+If the server is covered by Gnus agent, the possible values are
+`denied', set the server denied; `offline', set the server offline;
+nil, ask user.  If the server is not covered by Gnus agent, set the
+server denied."
+  :version "22.1"
+  :group 'gnus-start
+  :type '(choice (const :tag "Ask" nil)
+		 (const :tag "Deny server" denied)
+		 (const :tag "Unplug Agent" offline)))
+
+(defvar gnus-internal-registry-spool-current-method nil
+  "The current method, for the registry.")
 
 ;;;
 ;;; Server Communication
@@ -49,7 +74,7 @@ If CONFIRM is non-nil, the user will be asked for an NNTP server."
 	;; Read server name with completion.
 	(setq gnus-nntp-server
 	      (completing-read "NNTP server: "
-			       (mapcar (lambda (server) (list server))
+			       (mapcar 'list
 				       (cons (list gnus-nntp-server)
 					     gnus-secondary-servers))
 			       nil nil gnus-nntp-server)))
@@ -66,8 +91,7 @@ If CONFIRM is non-nil, the user will be asked for an NNTP server."
 			   (list 'nnmh-directory
 				 (file-name-as-directory
 				  (expand-file-name
-				   (concat "~/" (substring
-						 gnus-nntp-server 1)))))
+				   (substring gnus-nntp-server 1) "~/")))
 			   (list 'nnmh-get-new-mail nil)))
 		    (t
 		     (list 'nntp gnus-nntp-server)))))
@@ -83,11 +107,24 @@ If CONFIRM is non-nil, the user will be asked for an NNTP server."
        (t
 	(require 'nntp)))
       (setq gnus-current-select-method gnus-select-method)
-      (run-hooks 'gnus-open-server-hook)
+      (gnus-run-hooks 'gnus-open-server-hook)
+
+      ;; Partially validate agent covered methods now that the
+      ;; gnus-select-method is known.
+
+      (if gnus-agent
+          ;; NOTE: This is here for one purpose only.  By validating
+          ;; the current select method, it converts the old 5.10.3,
+          ;; and earlier, format to the current format.  That enables
+          ;; the agent code within gnus-open-server to function
+          ;; correctly.
+          (gnus-agent-read-servers-validate-native gnus-select-method))
+
       (or
        ;; gnus-open-server-hook might have opened it
        (gnus-server-opened gnus-select-method)
        (gnus-open-server gnus-select-method)
+       gnus-batch-mode
        (gnus-y-or-n-p
 	(format
 	 "%s (%s) open error: '%s'.  Continue? "
@@ -106,7 +143,8 @@ If CONFIRM is non-nil, the user will be asked for an NNTP server."
   "Check whether the connection to METHOD is down.
 If METHOD is nil, use `gnus-select-method'.
 If it is down, start it up (again)."
-  (let ((method (or method gnus-select-method)))
+  (let ((method (or method gnus-select-method))
+	result)
     ;; Transform virtual server names into select methods.
     (when (stringp method)
       (setq method (gnus-server-to-method method)))
@@ -118,11 +156,17 @@ If it is down, start it up (again)."
 	(gnus-message 5 "Opening %s server%s..." (car method)
 		      (if (equal (nth 1 method) "") ""
 			(format " on %s" (nth 1 method)))))
-      (run-hooks 'gnus-open-server-hook)
+      (gnus-run-hooks 'gnus-open-server-hook)
       (prog1
-	  (gnus-open-server method)
+	  (condition-case ()
+	      (setq result (gnus-open-server method))
+	    (quit (message "Quit gnus-check-server")
+		  nil))
 	(unless silent
-	  (message ""))))))
+	  (gnus-message 5 "Opening %s server%s...%s" (car method)
+			(if (equal (nth 1 method) "") ""
+			  (format " on %s" (nth 1 method)))
+			(if result "done" "failed")))))))
 
 (defun gnus-get-function (method function &optional noerror)
   "Return a function symbol based on METHOD and FUNCTION."
@@ -131,15 +175,28 @@ If it is down, start it up (again)."
     (error "Attempted use of a nil select method"))
   (when (stringp method)
     (setq method (gnus-server-to-method method)))
-  (let ((func (intern (format "%s-%s" (car method) function))))
-    ;; If the functions isn't bound, we require the backend in
-    ;; question.
+  ;; Check cache of constructed names.
+  (let* ((method-sym (if gnus-agent
+			 (inline (gnus-agent-get-function method))
+		       (car method)))
+	 (method-fns (get method-sym 'gnus-method-functions))
+	 (func (let ((method-fnlist-elt (assq function method-fns)))
+		 (unless method-fnlist-elt
+		   (setq method-fnlist-elt
+			 (cons function
+			       (intern (format "%s-%s" method-sym function))))
+		   (put method-sym 'gnus-method-functions
+			(cons method-fnlist-elt method-fns)))
+		 (cdr method-fnlist-elt))))
+    ;; Maybe complain if there is no function.
     (unless (fboundp func)
+      (unless (car method)
+	(error "Trying to require a method that doesn't exist"))
       (require (car method))
-      (when (and (not (fboundp func))
-		 (not noerror))
-	;; This backend doesn't implement this function.
-	(error "No such function: %s" func)))
+      (when (not (fboundp func))
+	(if noerror
+	    (setq func nil)
+	  (error "No such function: %s" func))))
     func))
 
 
@@ -147,260 +204,491 @@ If it is down, start it up (again)."
 ;;; Interface functions to the backends.
 ;;;
 
-(defun gnus-open-server (method)
-  "Open a connection to METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (let ((elem (assoc method gnus-opened-servers)))
+(defun gnus-open-server (gnus-command-method)
+  "Open a connection to GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (let ((elem (assoc gnus-command-method gnus-opened-servers)))
     ;; If this method was previously denied, we just return nil.
     (if (eq (nth 1 elem) 'denied)
 	(progn
 	  (gnus-message 1 "Denied server")
 	  nil)
       ;; Open the server.
-      (let ((result
-	     (funcall (gnus-get-function method 'open-server)
-		      (nth 1 method) (nthcdr 2 method))))
+      (let* ((open-server-function (gnus-get-function gnus-command-method 'open-server))
+             (result
+             (condition-case err
+                 (funcall open-server-function
+                          (nth 1 gnus-command-method)
+                          (nthcdr 2 gnus-command-method))
+               (error
+                (gnus-message 1 (format
+                                 "Unable to open server due to: %s"
+                                 (error-message-string err)))
+                nil)
+               (quit
+                (gnus-message 1 "Quit trying to open server")
+                nil)))
+            open-offline)
 	;; If this hasn't been opened before, we add it to the list.
 	(unless elem
-	  (setq elem (list method nil)
+	  (setq elem (list gnus-command-method nil)
 		gnus-opened-servers (cons elem gnus-opened-servers)))
 	;; Set the status of this server.
-	(setcar (cdr elem) (if result 'ok 'denied))
-	;; Return the result from the "open" call.
-	result))))
-
-(defun gnus-close-server (method)
-  "Close the connection to METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'close-server) (nth 1 method)))
-
-(defun gnus-request-list (method)
-  "Request the active file from METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'request-list) (nth 1 method)))
-
-(defun gnus-request-list-newsgroups (method)
-  "Request the newsgroups file from METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'request-list-newsgroups) (nth 1 method)))
-
-(defun gnus-request-newgroups (date method)
-  "Request all new groups since DATE from METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'request-newgroups)
-	   date (nth 1 method)))
-
-(defun gnus-server-opened (method)
-  "Check whether a connection to METHOD has been opened."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'server-opened) (nth 1 method)))
-
-(defun gnus-status-message (method)
-  "Return the status message from METHOD.
-If METHOD is a string, it is interpreted as a group name.   The method
-this group uses will be queried."
-  (let ((method (if (stringp method) (gnus-find-method-for-group method)
-		  method)))
-    (funcall (gnus-get-function method 'status-message) (nth 1 method))))
-
-(defun gnus-request-group (group &optional dont-check method)
+        (setcar (cdr elem)
+                (cond (result
+                       (if (eq open-server-function #'nnagent-open-server)
+                           ;; The agent's backend has a "special" status
+                           'offline
+                         'ok))
+                      ((and gnus-agent
+                            (gnus-agent-method-p gnus-command-method))
+                       (cond (gnus-server-unopen-status
+                              ;; Set the server's status to the unopen
+                              ;; status.  If that status is offline,
+                              ;; recurse to open the agent's backend.
+                              (setq open-offline (eq gnus-server-unopen-status 'offline))
+                              gnus-server-unopen-status)
+                             ((gnus-y-or-n-p
+                               (format "Unable to open %s:%s, go offline? "
+                                       (car gnus-command-method)
+                                       (cadr gnus-command-method)))
+                              (setq open-offline t)
+                              'offline)
+                             (t
+                              ;; This agentized server was still denied
+                              'denied)))
+                      (t
+                       ;; This unagentized server must be denied
+                       'denied)))
+
+        ;; NOTE: I MUST set the server's status to offline before this
+        ;; recursive call as this status will drive the
+        ;; gnus-get-function (called above) to return the agent's
+        ;; backend.
+        (if open-offline
+            ;; Recursively open this offline server to perform the
+            ;; open-server function of the agent's backend.
+            (let ((gnus-server-unopen-status 'denied))
+              ;; Bind gnus-server-unopen-status to avoid recursively
+              ;; prompting with "go offline?".  This is only a concern
+              ;; when the agent's backend fails to open the server.
+              (gnus-open-server gnus-command-method))
+          result)))))
+
+(defun gnus-close-server (gnus-command-method)
+  "Close the connection to GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'close-server)
+	   (nth 1 gnus-command-method)))
+
+(defun gnus-request-list (gnus-command-method)
+  "Request the active file from GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'request-list)
+	   (nth 1 gnus-command-method)))
+
+(defun gnus-request-list-newsgroups (gnus-command-method)
+  "Request the newsgroups file from GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'request-list-newsgroups)
+	   (nth 1 gnus-command-method)))
+
+(defun gnus-request-newgroups (date gnus-command-method)
+  "Request all new groups since DATE from GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (let ((func (gnus-get-function gnus-command-method 'request-newgroups t)))
+    (when func
+      (funcall func date (nth 1 gnus-command-method)))))
+
+(defun gnus-server-opened (gnus-command-method)
+  "Check whether a connection to GNUS-COMMAND-METHOD has been opened."
+  (unless (eq (gnus-server-status gnus-command-method)
+	      'denied)
+    (when (stringp gnus-command-method)
+      (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+    (funcall (inline (gnus-get-function gnus-command-method 'server-opened))
+	     (nth 1 gnus-command-method))))
+
+(defun gnus-status-message (gnus-command-method)
+  "Return the status message from GNUS-COMMAND-METHOD.
+If GNUS-COMMAND-METHOD is a string, it is interpreted as a group
+name.  The method this group uses will be queried."
+  (let ((gnus-command-method
+	 (if (stringp gnus-command-method)
+	     (gnus-find-method-for-group gnus-command-method)
+	   gnus-command-method)))
+    (funcall (gnus-get-function gnus-command-method 'status-message)
+	     (nth 1 gnus-command-method))))
+
+(defun gnus-request-regenerate (gnus-command-method)
+  "Request a data generation from GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'request-regenerate)
+	   (nth 1 gnus-command-method)))
+
+(defun gnus-request-group (group &optional dont-check gnus-command-method)
   "Request GROUP.  If DONT-CHECK, no information is required."
-  (let ((method (or method (gnus-find-method-for-group group))))
-    (when (stringp method)
-      (setq method (gnus-server-to-method method)))
-    (funcall (gnus-get-function method 'request-group)
-	     (gnus-group-real-name group) (nth 1 method) dont-check)))
+  (let ((gnus-command-method
+	 (or gnus-command-method (inline (gnus-find-method-for-group group)))))
+    (when (stringp gnus-command-method)
+      (setq gnus-command-method
+	    (inline (gnus-server-to-method gnus-command-method))))
+	 (funcall (inline (gnus-get-function gnus-command-method 'request-group))
+	     (gnus-group-real-name group) (nth 1 gnus-command-method)
+	     dont-check)))
 
 (defun gnus-list-active-group (group)
   "Request active information on GROUP."
-  (let ((method (gnus-find-method-for-group group))
+  (let ((gnus-command-method (gnus-find-method-for-group group))
 	(func 'list-active-group))
     (when (gnus-check-backend-function func group)
-      (funcall (gnus-get-function method func)
-	       (gnus-group-real-name group) (nth 1 method)))))
+      (funcall (gnus-get-function gnus-command-method func)
+	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
 
 (defun gnus-request-group-description (group)
   "Request a description of GROUP."
-  (let ((method (gnus-find-method-for-group group))
+  (let ((gnus-command-method (gnus-find-method-for-group group))
 	(func 'request-group-description))
     (when (gnus-check-backend-function func group)
-      (funcall (gnus-get-function method func)
-	       (gnus-group-real-name group) (nth 1 method)))))
+      (funcall (gnus-get-function gnus-command-method func)
+	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
+
+(defun gnus-request-group-articles (group)
+  "Request a list of existing articles in GROUP."
+  (let ((gnus-command-method (gnus-find-method-for-group group))
+	(func 'request-group-articles))
+    (when (gnus-check-backend-function func group)
+      (funcall (gnus-get-function gnus-command-method func)
+	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
 
 (defun gnus-close-group (group)
   "Request the GROUP be closed."
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'close-group)
-	     (gnus-group-real-name group) (nth 1 method))))
+  (let ((gnus-command-method (inline (gnus-find-method-for-group group))))
+    (funcall (gnus-get-function gnus-command-method 'close-group)
+	     (gnus-group-real-name group) (nth 1 gnus-command-method))))
 
 (defun gnus-retrieve-headers (articles group &optional fetch-old)
   "Request headers for ARTICLES in GROUP.
 If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
-  (let ((method (gnus-find-method-for-group group)))
-    (if (and gnus-use-cache (numberp (car articles)))
-	(gnus-cache-retrieve-headers articles group fetch-old)
-      (funcall (gnus-get-function method 'retrieve-headers)
-	       articles (gnus-group-real-name group) (nth 1 method)
-	       fetch-old))))
-
-(defun gnus-retrieve-groups (groups method)
-  "Request active information on GROUPS from METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'retrieve-groups) groups (nth 1 method)))
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (cond
+     ((and gnus-use-cache (numberp (car articles)))
+      (gnus-cache-retrieve-headers articles group fetch-old))
+     ((and gnus-agent (gnus-online gnus-command-method)
+	   (gnus-agent-method-p gnus-command-method))
+      (gnus-agent-retrieve-headers articles group fetch-old))
+     (t
+      (funcall (gnus-get-function gnus-command-method 'retrieve-headers)
+	       articles (gnus-group-real-name group)
+	       (nth 1 gnus-command-method) fetch-old)))))
+
+(defun gnus-retrieve-articles (articles group)
+  "Request ARTICLES in GROUP."
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (funcall (gnus-get-function gnus-command-method 'retrieve-articles)
+	     articles (gnus-group-real-name group)
+	     (nth 1 gnus-command-method))))
+
+(defun gnus-retrieve-groups (groups gnus-command-method)
+  "Request active information on GROUPS from GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'retrieve-groups)
+	   groups (nth 1 gnus-command-method)))
 
 (defun gnus-request-type (group &optional article)
   "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
-  (let ((method (gnus-find-method-for-group group)))
-    (if (not (gnus-check-backend-function 'request-type (car method)))
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (if (not (gnus-check-backend-function
+	      'request-type (car gnus-command-method)))
 	'unknown
-      (funcall (gnus-get-function method 'request-type)
+      (funcall (gnus-get-function gnus-command-method 'request-type)
 	       (gnus-group-real-name group) article))))
 
+(defun gnus-request-set-mark (group action)
+  "Set marks on articles in the back end."
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (if (not (gnus-check-backend-function
+	      'request-set-mark (car gnus-command-method)))
+	action
+      (funcall (gnus-get-function gnus-command-method 'request-set-mark)
+	       (gnus-group-real-name group) action
+	       (nth 1 gnus-command-method)))))
+
 (defun gnus-request-update-mark (group article mark)
-  "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
-  (let ((method (gnus-find-method-for-group group)))
-    (if (not (gnus-check-backend-function 'request-update-mark (car method)))
+  "Allow the back end to change the mark the user tries to put on an article."
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (if (not (gnus-check-backend-function
+	      'request-update-mark (car gnus-command-method)))
 	mark
-      (funcall (gnus-get-function method 'request-update-mark)
+      (funcall (gnus-get-function gnus-command-method 'request-update-mark)
 	       (gnus-group-real-name group) article mark))))
 
 (defun gnus-request-article (article group &optional buffer)
   "Request the ARTICLE in GROUP.
 ARTICLE can either be an article number or an article Message-ID.
 If BUFFER, insert the article in that group."
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-article)
-	     article (gnus-group-real-name group) (nth 1 method) buffer)))
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (funcall (gnus-get-function gnus-command-method 'request-article)
+	     article (gnus-group-real-name group)
+	     (nth 1 gnus-command-method) buffer)))
 
 (defun gnus-request-head (article group)
   "Request the head of ARTICLE in GROUP."
-  (let* ((method (gnus-find-method-for-group group))
-	 (head (gnus-get-function method 'request-head t)))
-    (if (fboundp head)
-	(funcall head article (gnus-group-real-name group) (nth 1 method))
-      (let ((res (gnus-request-article article group)))
-	(when res
-	  (save-excursion
-	    (set-buffer nntp-server-buffer)
-	    (goto-char (point-min))
-	    (when (search-forward "\n\n" nil t)
-	      (delete-region (1- (point)) (point-max)))
-	    (nnheader-fold-continuation-lines)))
-	res))))
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (head (gnus-get-function gnus-command-method 'request-head t))
+	 res clean-up)
+    (cond
+     ;; Check the cache.
+     ((and gnus-use-cache
+	   (numberp article)
+	   (gnus-cache-request-article article group))
+      (setq res (cons group article)
+	    clean-up t))
+     ;; Check the agent cache.
+     ((gnus-agent-request-article article group)
+      (setq res (cons group article)
+	    clean-up t))
+     ;; Use `head' function.
+     ((fboundp head)
+      (setq res (funcall head article (gnus-group-real-name group)
+			 (nth 1 gnus-command-method))))
+     ;; Use `article' function.
+     (t
+      (setq res (gnus-request-article article group)
+	    clean-up t)))
+    (when clean-up
+      (save-excursion
+	(set-buffer nntp-server-buffer)
+	(goto-char (point-min))
+	(when (search-forward "\n\n" nil t)
+	  (delete-region (1- (point)) (point-max)))
+	(nnheader-fold-continuation-lines)))
+    res))
 
 (defun gnus-request-body (article group)
   "Request the body of ARTICLE in GROUP."
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-body)
-	     article (gnus-group-real-name group) (nth 1 method))))
-
-(defun gnus-request-post (method)
-  "Post the current buffer using METHOD."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (funcall (gnus-get-function method 'request-post) (nth 1 method)))
-
-(defun gnus-request-scan (group method)
-  "Request a SCAN being performed in GROUP from METHOD.
-If GROUP is nil, all groups on METHOD are scanned."
-  (let ((method (if group (gnus-find-method-for-group group) method)))
-    (funcall (gnus-get-function method 'request-scan)
-	     (and group (gnus-group-real-name group)) (nth 1 method))))
-
-(defsubst gnus-request-update-info (info method)
-  "Request that METHOD update INFO."
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (when (gnus-check-backend-function 'request-update-info (car method))
-    (funcall (gnus-get-function method 'request-update-info)
-	     (gnus-group-real-name (gnus-info-group info))
-	     info (nth 1 method))))
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (head (gnus-get-function gnus-command-method 'request-body t))
+	 res clean-up)
+    (cond
+     ;; Check the cache.
+     ((and gnus-use-cache
+	   (numberp article)
+	   (gnus-cache-request-article article group))
+      (setq res (cons group article)
+	    clean-up t))
+     ;; Check the agent cache.
+     ((gnus-agent-request-article article group)
+      (setq res (cons group article)
+	    clean-up t))
+     ;; Use `head' function.
+     ((fboundp head)
+      (setq res (funcall head article (gnus-group-real-name group)
+			 (nth 1 gnus-command-method))))
+     ;; Use `article' function.
+     (t
+      (setq res (gnus-request-article article group)
+	    clean-up t)))
+    (when clean-up
+      (save-excursion
+	(set-buffer nntp-server-buffer)
+	(goto-char (point-min))
+	(when (search-forward "\n\n" nil t)
+	  (delete-region (point-min) (1- (point))))))
+    res))
+
+(defun gnus-request-post (gnus-command-method)
+  "Post the current buffer using GNUS-COMMAND-METHOD."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (funcall (gnus-get-function gnus-command-method 'request-post)
+	   (nth 1 gnus-command-method)))
+
+(defun gnus-request-scan (group gnus-command-method)
+  "Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
+If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
+  (let ((gnus-command-method
+	 (if group (gnus-find-method-for-group group) gnus-command-method))
+	(gnus-inhibit-demon t)
+	(mail-source-plugged gnus-plugged))
+    (when (or gnus-plugged (not (gnus-agent-method-p gnus-command-method)))
+      (setq gnus-internal-registry-spool-current-method gnus-command-method)
+      (funcall (gnus-get-function gnus-command-method 'request-scan)
+	       (and group (gnus-group-real-name group))
+	       (nth 1 gnus-command-method)))))
+
+(defsubst gnus-request-update-info (info gnus-command-method)
+  "Request that GNUS-COMMAND-METHOD update INFO."
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (when (gnus-check-backend-function
+	 'request-update-info (car gnus-command-method))
+    (let ((group (gnus-info-group info)))
+      (and (funcall (gnus-get-function gnus-command-method
+				       'request-update-info)
+		    (gnus-group-real-name group)
+		    info (nth 1 gnus-command-method))
+	   ;; If the minimum article number is greater than 1, then all
+	   ;; smaller article numbers are known not to exist; we'll
+	   ;; artificially add those to the 'read range.
+	   (let* ((active (gnus-active group))
+		  (min (car active)))
+	     (when (> min 1)
+	       (let* ((range (if (= min 2) 1 (cons 1 (1- min))))
+		      (read (gnus-info-read info))
+		      (new-read (gnus-range-add read (list range))))
+		 (gnus-info-set-read info new-read)))
+	     info)))))
 
 (defun gnus-request-expire-articles (articles group &optional force)
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-expire-articles)
-	     articles (gnus-group-real-name group) (nth 1 method)
-	     force)))
-
-(defun gnus-request-move-article
-  (article group server accept-function &optional last)
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-move-article)
-	     article (gnus-group-real-name group)
-	     (nth 1 method) accept-function last)))
-
-(defun gnus-request-accept-article (group method &optional last)
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (not-deleted
+	  (funcall
+	   (gnus-get-function gnus-command-method 'request-expire-articles)
+	   articles (gnus-group-real-name group) (nth 1 gnus-command-method)
+	   force)))
+    (when (and gnus-agent
+	       (gnus-agent-method-p gnus-command-method))
+      (let ((expired-articles (gnus-sorted-difference articles not-deleted)))
+        (when expired-articles
+          (gnus-agent-expire expired-articles group 'force))))
+    not-deleted))
+
+(defun gnus-request-move-article (article group server accept-function
+					  &optional last)
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (result (funcall (gnus-get-function gnus-command-method
+					     'request-move-article)
+			  article (gnus-group-real-name group)
+			  (nth 1 gnus-command-method) accept-function last)))
+    (when (and result gnus-agent
+	       (gnus-agent-method-p gnus-command-method))
+      (gnus-agent-unfetch-articles group (list article)))
+    result))
+
+(defun gnus-request-accept-article (group &optional gnus-command-method last
+					  no-encode)
   ;; Make sure there's a newline at the end of the article.
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (when (and (not method)
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (when (and (not gnus-command-method)
 	     (stringp group))
-    (setq method (gnus-group-name-to-method group)))
+    (setq gnus-command-method (or (gnus-find-method-for-group group)
+                                  (gnus-group-name-to-method group))))
   (goto-char (point-max))
   (unless (bolp)
     (insert "\n"))
-  (let ((func (car (or method (gnus-find-method-for-group group)))))
-    (funcall (intern (format "%s-request-accept-article" func))
-	     (if (stringp group) (gnus-group-real-name group) group)
-	     (cadr method)
-	     last)))
-
-(defun gnus-request-replace-article (article group buffer)
-  (let ((func (car (gnus-find-method-for-group group))))
-    (funcall (intern (format "%s-request-replace-article" func))
-	     article (gnus-group-real-name group) buffer)))
+  (unless no-encode
+    (let ((message-options message-options))
+      (message-options-set-recipient)
+      (save-restriction
+	(message-narrow-to-head)
+	(let ((mail-parse-charset message-default-charset))
+	  (mail-encode-encoded-word-buffer)))
+      (message-encode-message-body)))
+  (let ((gnus-command-method (or gnus-command-method
+				 (gnus-find-method-for-group group)))
+	(result
+	 (funcall
+	  (gnus-get-function gnus-command-method 'request-accept-article)
+	  (if (stringp group) (gnus-group-real-name group) group)
+	  (cadr gnus-command-method)
+	  last)))
+    (when (and gnus-agent (gnus-agent-method-p gnus-command-method))
+      (gnus-agent-regenerate-group group (list (cdr result))))
+    result))
+
+(defun gnus-request-replace-article (article group buffer &optional no-encode)
+  (unless no-encode
+    (let ((message-options message-options))
+      (message-options-set-recipient)
+      (save-restriction
+	(message-narrow-to-head)
+	(let ((mail-parse-charset message-default-charset))
+	  (mail-encode-encoded-word-buffer)))
+      (message-encode-message-body)))
+  (let* ((func (car (gnus-group-name-to-method group)))
+         (result (funcall (intern (format "%s-request-replace-article" func))
+			  article (gnus-group-real-name group) buffer)))
+    (when (and gnus-agent (gnus-agent-method-p gnus-command-method))
+      (gnus-agent-regenerate-group group (list article)))
+    result))
 
 (defun gnus-request-associate-buffer (group)
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-associate-buffer)
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (funcall (gnus-get-function gnus-command-method 'request-associate-buffer)
 	     (gnus-group-real-name group))))
 
 (defun gnus-request-restore-buffer (article group)
   "Request a new buffer restored to the state of ARTICLE."
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-restore-buffer)
-	     article (gnus-group-real-name group) (nth 1 method))))
+  (let ((gnus-command-method (gnus-find-method-for-group group)))
+    (funcall (gnus-get-function gnus-command-method 'request-restore-buffer)
+	     article (gnus-group-real-name group)
+	     (nth 1 gnus-command-method))))
 
-(defun gnus-request-create-group (group &optional method)
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  (let ((method (or method (gnus-find-method-for-group group))))
-    (funcall (gnus-get-function method 'request-create-group)
-	     (gnus-group-real-name group) (nth 1 method))))
+(defun gnus-request-create-group (group &optional gnus-command-method args)
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (let ((gnus-command-method
+	 (or gnus-command-method (gnus-find-method-for-group group))))
+    (funcall (gnus-get-function gnus-command-method 'request-create-group)
+	     (gnus-group-real-name group) (nth 1 gnus-command-method) args)))
 
 (defun gnus-request-delete-group (group &optional force)
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-delete-group)
-	     (gnus-group-real-name group) force (nth 1 method))))
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (result
+	  (funcall (gnus-get-function gnus-command-method 'request-delete-group)
+		   (gnus-group-real-name group) force (nth 1 gnus-command-method))))
+    (when result
+      (gnus-cache-delete-group group)
+      (gnus-agent-delete-group group))
+    result))
 
 (defun gnus-request-rename-group (group new-name)
-  (let ((method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function method 'request-rename-group)
-	     (gnus-group-real-name group)
-	     (gnus-group-real-name new-name) (nth 1 method))))
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+	 (result
+	  (funcall (gnus-get-function gnus-command-method 'request-rename-group)
+		   (gnus-group-real-name group)
+		   (gnus-group-real-name new-name) (nth 1 gnus-command-method))))
+    (when result
+      (gnus-cache-rename-group group new-name)
+      (gnus-agent-rename-group group new-name))
+    result))
 
 (defun gnus-close-backends ()
   ;; Send a close request to all backends that support such a request.
   (let ((methods gnus-valid-select-methods)
-	func)
-    (while methods
-      (if (fboundp (setq func (intern (concat (caar methods)
-					      "-request-close"))))
-	  (funcall func))
-      (setq methods (cdr methods)))))
-
-(defun gnus-asynchronous-p (method)
-  (let ((func (gnus-get-function method 'asynchronous-p t)))
+	(gnus-inhibit-demon t)
+	func gnus-command-method)
+    (while (setq gnus-command-method (pop methods))
+      (when (fboundp (setq func (intern
+				 (concat (car gnus-command-method)
+					 "-request-close"))))
+	(funcall func)))))
+
+(defun gnus-asynchronous-p (gnus-command-method)
+  (let ((func (gnus-get-function gnus-command-method 'asynchronous-p t)))
     (when (fboundp func)
       (funcall func))))
 
+(defun gnus-remove-denial (gnus-command-method)
+  (when (stringp gnus-command-method)
+    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+  (let* ((elem (assoc gnus-command-method gnus-opened-servers))
+	 (status (cadr elem)))
+    ;; If this hasn't been opened before, we add it to the list.
+    (when (eq status 'denied)
+      ;; Set the status of this server.
+      (setcar (cdr elem) 'closed))))
+
 (provide 'gnus-int)
 
+;;; arch-tag: bbc90087-9b7f-4017-a92c-3abf180ac86d
 ;;; gnus-int.el ends here