dummyt20.c
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上传日期:2007-01-04
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- /*
- * Program: Dummy routines for TOPS-20
- *
- * Author: Mark Crispin
- * 6158 Lariat Loop NE
- * Bainbridge Island, WA 98110-2098
- * Internet: MRC@Panda.COM
- *
- * Date: 13 June 1995
- * Last Edited: 4 September 1999
- *
- * Copyright 1999 by Mark Crispin
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appears in all copies and that both the
- * above copyright notices and this permission notice appear in supporting
- * documentation, and that the name of Mark Crispin not be used in advertising
- * or publicity pertaining to distribution of the software without specific,
- * written prior permission. This software is made available "as is", and
- * MARK CRISPIN DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
- * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN NO EVENT SHALL
- * MARK CRISPIN BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER IN AN ACTION OF CONTRACT, TORT (INCLUDING NEGLIGENCE) OR STRICT
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
- * THIS SOFTWARE.
- *
- */
- #include <ctype.h>
- #include <stdio.h>
- #include "mail.h"
- #include "osdep.h"
- #include "dummy.h"
- #include "misc.h"
- /* Dummy routines */
- /* Driver dispatch used by MAIL */
- DRIVER dummydriver = {
- "dummy", /* driver name */
- DR_LOCAL|DR_MAIL, /* driver flags */
- (DRIVER *) NIL, /* next driver */
- dummy_valid, /* mailbox is valid for us */
- dummy_parameters, /* manipulate parameters */
- dummy_scan, /* scan mailboxes */
- dummy_list, /* list mailboxes */
- dummy_lsub, /* list subscribed mailboxes */
- NIL, /* subscribe to mailbox */
- NIL, /* unsubscribe from mailbox */
- dummy_create, /* create mailbox */
- dummy_delete, /* delete mailbox */
- dummy_rename, /* rename mailbox */
- NIL, /* status of mailbox */
- dummy_open, /* open mailbox */
- dummy_close, /* close mailbox */
- NIL, /* fetch message "fast" attributes */
- NIL, /* fetch message flags */
- NIL, /* fetch overview */
- NIL, /* fetch message structure */
- NIL, /* fetch header */
- NIL, /* fetch text */
- NIL, /* fetch message data */
- NIL, /* unique identifier */
- NIL, /* message number from UID */
- NIL, /* modify flags */
- NIL, /* per-message modify flags */
- NIL, /* search for message based on criteria */
- NIL, /* sort messages */
- NIL, /* thread messages */
- dummy_ping, /* ping mailbox to see if still alive */
- dummy_check, /* check for new messages */
- dummy_expunge, /* expunge deleted messages */
- dummy_copy, /* copy messages to another mailbox */
- dummy_append, /* append string message to mailbox */
- NIL /* garbage collect stream */
- };
- /* prototype stream */
- MAILSTREAM dummyproto = {&dummydriver};
- /* Dummy validate mailbox
- * Accepts: mailbox name
- * Returns: our driver if name is valid, NIL otherwise
- */
- DRIVER *dummy_valid (char *name)
- {
- char tmp[MAILTMPLEN];
- /* must be valid local mailbox */
- return (name && *name && (*name != '{') &&
- /* INBOX is always accepted */
- ((!strcmp (ucase (strcpy (tmp,name)),"INBOX"))))
- ? &dummydriver : NIL;
- }
- /* Dummy manipulate driver parameters
- * Accepts: function code
- * function-dependent value
- * Returns: function-dependent return value
- */
- void *dummy_parameters (long function,void *value)
- {
- return NIL;
- }
- /* Dummy scan mailboxes
- * Accepts: mail stream
- * reference
- * pattern to search
- * string to scan
- */
- void dummy_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
- {
- /* return silently */
- }
- /* Dummy list mailboxes
- * Accepts: mail stream
- * reference
- * pattern to search
- */
- void dummy_list (MAILSTREAM *stream,char *ref,char *pat)
- {
- /* return silently */
- }
- /* Dummy list subscribed mailboxes
- * Accepts: mail stream
- * reference
- * pattern to search
- */
- void dummy_lsub (MAILSTREAM *stream,char *ref,char *pat)
- {
- /* return silently */
- }
- /* Dummy create mailbox
- * Accepts: mail stream
- * mailbox name to create
- * driver type to use
- * Returns: T on success, NIL on failure
- */
- long dummy_create (MAILSTREAM *stream,char *mailbox)
- {
- return NIL; /* always fails */
- }
- /* Dummy delete mailbox
- * Accepts: mail stream
- * mailbox name to delete
- * Returns: T on success, NIL on failure
- */
- long dummy_delete (MAILSTREAM *stream,char *mailbox)
- {
- return NIL; /* always fails */
- }
- /* Mail rename mailbox
- * Accepts: mail stream
- * old mailbox name
- * new mailbox name
- * Returns: T on success, NIL on failure
- */
- long dummy_rename (MAILSTREAM *stream,char *old,char *newname)
- {
- return NIL; /* always fails */
- }
- /* Dummy open
- * Accepts: stream to open
- * Returns: stream on success, NIL on failure
- */
- MAILSTREAM *dummy_open (MAILSTREAM *stream)
- {
- char tmp[MAILTMPLEN];
- /* OP_PROTOTYPE call or silence */
- if (!stream || stream->silent) return NIL;
- if (strcmp (ucase (strcpy (tmp,stream->mailbox)),"INBOX")) {
- sprintf (tmp,"Not a mailbox: %s",stream->mailbox);
- mm_log (tmp,ERROR);
- return NIL; /* always fails */
- }
- if (!stream->silent) { /* only if silence not requested */
- mail_exists (stream,0); /* say there are 0 messages */
- mail_recent (stream,0);
- stream->uid_validity = 1;
- }
- stream->inbox = T; /* note that it's an INBOX */
- return stream; /* return success */
- }
- /* Dummy close
- * Accepts: MAIL stream
- * options
- */
- void dummy_close (MAILSTREAM *stream,long options)
- {
- /* return silently */
- }
- /* Dummy ping mailbox
- * Accepts: MAIL stream
- * Returns: T if stream alive, else NIL
- * No-op for readonly files, since read/writer can expunge it from under us!
- */
- long dummy_ping (MAILSTREAM *stream)
- {
- return T;
- }
- /* Dummy check mailbox
- * Accepts: MAIL stream
- * No-op for readonly files, since read/writer can expunge it from under us!
- */
- void dummy_check (MAILSTREAM *stream)
- {
- dummy_ping (stream); /* invoke ping */
- }
- /* Dummy expunge mailbox
- * Accepts: MAIL stream
- */
- void dummy_expunge (MAILSTREAM *stream)
- {
- /* return silently */
- }
- /* Dummy copy message(s)
- * Accepts: MAIL stream
- * sequence
- * destination mailbox
- * options
- * Returns: T if copy successful, else NIL
- */
- long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
- {
- if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
- mail_sequence (stream,sequence)) fatal ("Impossible dummy_copy");
- return NIL;
- }
- /* Dummy append message string
- * Accepts: mail stream
- * destination mailbox
- * optional flags
- * optional date
- * stringstruct of message to append
- * Returns: T on success, NIL on failure
- */
- long dummy_append (MAILSTREAM *stream,char *mailbox,char *flags,char *date,
- STRING *message)
- {
- char tmp[MAILTMPLEN];
- sprintf (tmp,"Can't append to %s",mailbox);
- mm_log (tmp,ERROR); /* pass up error */
- return NIL; /* always fails */
- }
- /* Dummy canonicalize name
- * Accepts: buffer to write name
- * reference
- * pattern
- * Returns: T if success, NIL if failure
- */
- long dummy_canonicalize (char *tmp,char *ref,char *pat)
- {
- if (*pat == '{' || (ref && (*ref == '{'))) return NIL;
- /* write name with reference */
- if (ref && *ref && !strpbrk (pat,":<"))
- sprintf (tmp,"%s%s",ref,pat);
- else strcpy (tmp,pat); /* ignore reference, only need mailbox name */
- return T;
- }