/* * Program:	MX mail routines * * Author(s):	Mark Crispin *		Networks and Distributed Computing *		Computing & Communications *		University of Washington *		Administration Building, AG-44 *		Seattle, WA  98195 *		Internet: MRC@CAC.Washington.EDU * * Date:	3 May 1996 * Last Edited:	24 January 2000 * * Copyright 2000 by the University of Washington * *  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 notice and this permission notice appear in supporting * documentation, and that the name of the University of Washington 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 * THE UNIVERSITY OF WASHINGTON 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 THE UNIVERSITY OF WASHINGTON 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. * *//* Build parameters */#define MXINDEXNAME "/.mxindex"#define MXINDEX(d,s) strcat (mx_file (d,s),MXINDEXNAME)/* MX I/O stream local data */	typedef struct mx_local {  int fd;			/* file descriptor of open index */  char *dir;			/* spool directory name */  char *buf;			/* temporary buffer */  unsigned long buflen;		/* current size of temporary buffer */  unsigned long cachedtexts;	/* total size of all cached texts */  time_t scantime;		/* last time directory scanned */} MXLOCAL;/* Convenient access to local data */#define LOCAL ((MXLOCAL *) stream->local)/* Function prototypes */DRIVER *mx_valid (char *name);int mx_isvalid (char *name,char *tmp);void *mx_parameters (long function,void *value);void mx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);void mx_list (MAILSTREAM *stream,char *ref,char *pat);void mx_lsub (MAILSTREAM *stream,char *ref,char *pat);void mx_list_work (MAILSTREAM *stream,char *dir,char *pat,long level);long mx_subscribe (MAILSTREAM *stream,char *mailbox);long mx_unsubscribe (MAILSTREAM *stream,char *mailbox);long mx_create (MAILSTREAM *stream,char *mailbox);long mx_delete (MAILSTREAM *stream,char *mailbox);long mx_rename (MAILSTREAM *stream,char *old,char *newname);MAILSTREAM *mx_open (MAILSTREAM *stream);void mx_close (MAILSTREAM *stream,long options);void mx_fast (MAILSTREAM *stream,char *sequence,long flags);char *mx_fast_work (MAILSTREAM *stream,MESSAGECACHE *elt);char *mx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,		 long flags);long mx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);void mx_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);void mx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);long mx_ping (MAILSTREAM *stream);void mx_check (MAILSTREAM *stream);void mx_expunge (MAILSTREAM *stream);long mx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,	      long options);long mx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);int mx_select (struct direct *name);int mx_numsort (const void *d1,const void *d2);char *mx_file (char *dst,char *name);long mx_lockindex (MAILSTREAM *stream);void mx_unlockindex (MAILSTREAM *stream);void mx_setdate (char *file,MESSAGECACHE *elt);