1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/osdep/dos/mtxdos.c	Mon Sep 14 15:17:45 2009 +0900
     1.3 @@ -0,0 +1,875 @@
     1.4 +/* ========================================================================
     1.5 + * Copyright 1988-2006 University of Washington
     1.6 + *
     1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
     1.8 + * you may not use this file except in compliance with the License.
     1.9 + * You may obtain a copy of the License at
    1.10 + *
    1.11 + *     http://www.apache.org/licenses/LICENSE-2.0
    1.12 + *
    1.13 + * 
    1.14 + * ========================================================================
    1.15 + */
    1.16 +
    1.17 +/*
    1.18 + * Program:	MTX mail routines
    1.19 + *
    1.20 + * Author:	Mark Crispin
    1.21 + *		Networks and Distributed Computing
    1.22 + *		Computing & Communications
    1.23 + *		University of Washington
    1.24 + *		Administration Building, AG-44
    1.25 + *		Seattle, WA  98195
    1.26 + *		Internet: MRC@CAC.Washington.EDU
    1.27 + *
    1.28 + * Date:	24 June 1992
    1.29 + * Last Edited:	30 August 2006
    1.30 + */
    1.31 +
    1.32 +
    1.33 +#include <ctype.h>
    1.34 +#include <errno.h>
    1.35 +#include <fcntl.h>
    1.36 +#include "mail.h"
    1.37 +#include "osdep.h"
    1.38 +#include <time.h>
    1.39 +#include <sys\stat.h>
    1.40 +#include <dos.h>
    1.41 +#include "rfc822.h"
    1.42 +#include "dummy.h"
    1.43 +#include "misc.h"
    1.44 +#include "fdstring.h"
    1.45 +
    1.46 +/* MTX I/O stream local data */
    1.47 +	
    1.48 +typedef struct mtx_local {
    1.49 +  int fd;			/* file descriptor for I/O */
    1.50 +  off_t filesize;		/* file size parsed */
    1.51 +  unsigned char *buf;		/* temporary buffer */
    1.52 +} MTXLOCAL;
    1.53 +
    1.54 +
    1.55 +/* Drive-dependent data passed to init method */
    1.56 +
    1.57 +typedef struct mtx_data {
    1.58 +  int fd;			/* file data */
    1.59 +  unsigned long pos;		/* initial position */
    1.60 +} MTXDATA;
    1.61 +
    1.62 +
    1.63 +/* Convenient access to local data */
    1.64 +
    1.65 +#define LOCAL ((MTXLOCAL *) stream->local)
    1.66 +
    1.67 +
    1.68 +/* Function prototypes */
    1.69 +
    1.70 +DRIVER *mtx_valid (char *name);
    1.71 +long mtx_isvalid (char *name,char *tmp);
    1.72 +void *mtx_parameters (long function,void *value);
    1.73 +void mtx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
    1.74 +void mtx_list (MAILSTREAM *stream,char *ref,char *pat);
    1.75 +void mtx_lsub (MAILSTREAM *stream,char *ref,char *pat);
    1.76 +long mtx_create (MAILSTREAM *stream,char *mailbox);
    1.77 +long mtx_delete (MAILSTREAM *stream,char *mailbox);
    1.78 +long mtx_rename (MAILSTREAM *stream,char *old,char *newname);
    1.79 +MAILSTREAM *mtx_open (MAILSTREAM *stream);
    1.80 +void mtx_close (MAILSTREAM *stream,long options);
    1.81 +char *mtx_header (MAILSTREAM *stream,unsigned long msgno,
    1.82 +		  unsigned long *length,long flags);
    1.83 +long mtx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
    1.84 +void mtx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
    1.85 +long mtx_ping (MAILSTREAM *stream);
    1.86 +void mtx_check (MAILSTREAM *stream);
    1.87 +long mtx_expunge (MAILSTREAM *stream,char *sequence,long options);
    1.88 +long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
    1.89 +long mtx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
    1.90 +
    1.91 +char *mtx_file (char *dst,char *name);
    1.92 +long mtx_badname (char *tmp,char *s);
    1.93 +long mtx_parse (MAILSTREAM *stream);
    1.94 +void mtx_update_status (MAILSTREAM *stream,unsigned long msgno);
    1.95 +unsigned long mtx_hdrpos (MAILSTREAM *stream,unsigned long msgno,
    1.96 +			  unsigned long *size);
    1.97 +
    1.98 +/* MTX mail routines */
    1.99 +
   1.100 +
   1.101 +/* Driver dispatch used by MAIL */
   1.102 +
   1.103 +DRIVER mtxdriver = {
   1.104 +  "mtx",			/* driver name */
   1.105 +				/* driver flags */
   1.106 +  DR_LOCAL|DR_MAIL|DR_LOWMEM|DR_CRLF|DR_NOSTICKY,
   1.107 +  (DRIVER *) NIL,		/* next driver */
   1.108 +  mtx_valid,			/* mailbox is valid for us */
   1.109 +  mtx_parameters,		/* manipulate parameters */
   1.110 +  mtx_scan,			/* scan mailboxes */
   1.111 +  mtx_list,			/* list mailboxes */
   1.112 +  mtx_lsub,			/* list subscribed mailboxes */
   1.113 +  NIL,				/* subscribe to mailbox */
   1.114 +  NIL,				/* unsubscribe from mailbox */
   1.115 +  mtx_create,			/* create mailbox */
   1.116 +  mtx_delete,			/* delete mailbox */
   1.117 +  mtx_rename,			/* rename mailbox */
   1.118 +  mail_status_default,		/* status of mailbox */
   1.119 +  mtx_open,			/* open mailbox */
   1.120 +  mtx_close,			/* close mailbox */
   1.121 +  NIL,				/* fetch message "fast" attributes */
   1.122 +  NIL,				/* fetch message flags */
   1.123 +  NIL,				/* fetch overview */
   1.124 +  NIL,				/* fetch message envelopes */
   1.125 +  mtx_header,			/* fetch message header */
   1.126 +  mtx_text,			/* fetch message body */
   1.127 +  NIL,				/* fetch partial message text */
   1.128 +  NIL,				/* unique identifier */
   1.129 +  NIL,				/* message number */
   1.130 +  NIL,				/* modify flags */
   1.131 +  mtx_flagmsg,			/* per-message modify flags */
   1.132 +  NIL,				/* search for message based on criteria */
   1.133 +  NIL,				/* sort messages */
   1.134 +  NIL,				/* thread messages */
   1.135 +  mtx_ping,			/* ping mailbox to see if still alive */
   1.136 +  mtx_check,			/* check for new messages */
   1.137 +  mtx_expunge,			/* expunge deleted messages */
   1.138 +  mtx_copy,			/* copy messages to another mailbox */
   1.139 +  mtx_append,			/* append string message to mailbox */
   1.140 +  NIL				/* garbage collect stream */
   1.141 +};
   1.142 +
   1.143 +				/* prototype stream */
   1.144 +MAILSTREAM mtxproto = {&mtxdriver};
   1.145 +
   1.146 +/* MTX mail validate mailbox
   1.147 + * Accepts: mailbox name
   1.148 + * Returns: our driver if name is valid, NIL otherwise
   1.149 + */
   1.150 +
   1.151 +DRIVER *mtx_valid (char *name)
   1.152 +{
   1.153 +  char tmp[MAILTMPLEN];
   1.154 +  return mtx_isvalid (name,tmp) ? &mtxdriver : (DRIVER *) NIL;
   1.155 +}
   1.156 +
   1.157 +
   1.158 +/* MTX mail test for valid mailbox
   1.159 + * Accepts: mailbox name
   1.160 + * Returns: T if valid, NIL otherwise
   1.161 + */
   1.162 +
   1.163 +long mtx_isvalid (char *name,char *tmp)
   1.164 +{
   1.165 +  int fd;
   1.166 +  long ret = NIL;
   1.167 +  char *s;
   1.168 +  struct stat sbuf;
   1.169 +  errno = EINVAL;		/* assume invalid argument */
   1.170 +				/* if file, get its status */
   1.171 +  if ((*name != '{') && mailboxfile (tmp,name) && !stat (tmp,&sbuf)) {
   1.172 +    if (!sbuf.st_size)errno = 0;/* empty file */
   1.173 +    else if ((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) >= 0) {
   1.174 +      memset (tmp,'\0',MAILTMPLEN);
   1.175 +      if ((read (fd,tmp,64) >= 0) && (s = strchr (tmp,'\015')) &&
   1.176 +	  (s[1] == '\012')) {	/* valid format? */
   1.177 +	*s = '\0';		/* tie off header */
   1.178 +				/* must begin with dd-mmm-yy" */
   1.179 +	ret = (((tmp[2] == '-' && tmp[6] == '-') ||
   1.180 +		(tmp[1] == '-' && tmp[5] == '-')) &&
   1.181 +	       (s = strchr (tmp+18,',')) && strchr (s+2,';')) ? T : NIL;
   1.182 +      }
   1.183 +      else errno = -1;		/* bogus format */
   1.184 +      close (fd);		/* close the file */
   1.185 +    }
   1.186 +  }
   1.187 +				/* in case INBOX but not mtx format */
   1.188 +  else if ((errno == ENOENT) && ((name[0] == 'I') || (name[0] == 'i')) &&
   1.189 +	   ((name[1] == 'N') || (name[1] == 'n')) &&
   1.190 +	   ((name[2] == 'B') || (name[2] == 'b')) &&
   1.191 +	   ((name[3] == 'O') || (name[3] == 'o')) &&
   1.192 +	   ((name[4] == 'X') || (name[4] == 'x')) && !name[5]) errno = -1;
   1.193 +  return ret;			/* return what we should */
   1.194 +}
   1.195 +
   1.196 +
   1.197 +/* MTX manipulate driver parameters
   1.198 + * Accepts: function code
   1.199 + *	    function-dependent value
   1.200 + * Returns: function-dependent return value
   1.201 + */
   1.202 +
   1.203 +void *mtx_parameters (long function,void *value)
   1.204 +{
   1.205 +  return NIL;
   1.206 +}
   1.207 +
   1.208 +/* MTX mail scan mailboxes
   1.209 + * Accepts: mail stream
   1.210 + *	    reference
   1.211 + *	    pattern to search
   1.212 + *	    string to scan
   1.213 + */
   1.214 +
   1.215 +void mtx_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
   1.216 +{
   1.217 +  if (stream) dummy_scan (NIL,ref,pat,contents);
   1.218 +}
   1.219 +
   1.220 +
   1.221 +/* MTX mail list mailboxes
   1.222 + * Accepts: mail stream
   1.223 + *	    reference
   1.224 + *	    pattern to search
   1.225 + */
   1.226 +
   1.227 +void mtx_list (MAILSTREAM *stream,char *ref,char *pat)
   1.228 +{
   1.229 +  if (stream) dummy_list (stream,ref,pat);
   1.230 +}
   1.231 +
   1.232 +
   1.233 +/* MTX mail list subscribed mailboxes
   1.234 + * Accepts: mail stream
   1.235 + *	    reference
   1.236 + *	    pattern to search
   1.237 + */
   1.238 +
   1.239 +void mtx_lsub (MAILSTREAM *stream,char *ref,char *pat)
   1.240 +{
   1.241 +  if (stream) dummy_lsub (stream,ref,pat);
   1.242 +}
   1.243 +
   1.244 +/* MTX mail create mailbox
   1.245 + * Accepts: MAIL stream
   1.246 + *	    mailbox name to create
   1.247 + * Returns: T on success, NIL on failure
   1.248 + */
   1.249 +
   1.250 +long mtx_create (MAILSTREAM *stream,char *mailbox)
   1.251 +{
   1.252 +  return dummy_create (stream,mailbox);
   1.253 +}
   1.254 +
   1.255 +
   1.256 +/* MTX mail delete mailbox
   1.257 + * Accepts: MAIL stream
   1.258 + *	    mailbox name to delete
   1.259 + * Returns: T on success, NIL on failure
   1.260 + */
   1.261 +
   1.262 +long mtx_delete (MAILSTREAM *stream,char *mailbox)
   1.263 +{
   1.264 +  return dummy_delete (stream,mailbox);
   1.265 +}
   1.266 +
   1.267 +
   1.268 +/* MTX mail rename mailbox
   1.269 + * Accepts: MAIL stream
   1.270 + *	    old mailbox name
   1.271 + *	    new mailbox name (or NIL for delete)
   1.272 + * Returns: T on success, NIL on failure
   1.273 + */
   1.274 +
   1.275 +long mtx_rename (MAILSTREAM *stream,char *old,char *newname)
   1.276 +{
   1.277 +  return dummy_rename (stream,old,newname);
   1.278 +}
   1.279 +
   1.280 +/* MTX mail open
   1.281 + * Accepts: stream to open
   1.282 + * Returns: stream on success, NIL on failure
   1.283 + */
   1.284 +
   1.285 +MAILSTREAM *mtx_open (MAILSTREAM *stream)
   1.286 +{
   1.287 +  long i;
   1.288 +  int fd;
   1.289 +  char *s;
   1.290 +  char tmp[MAILTMPLEN];
   1.291 +				/* return prototype for OP_PROTOTYPE call */
   1.292 +  if (!stream) return &mtxproto;
   1.293 +  if (stream->local) fatal ("mtx recycle stream");
   1.294 +  if (!mailboxfile (tmp,stream->mailbox))
   1.295 +    return (MAILSTREAM *) mtx_badname (tmp,stream->mailbox);
   1.296 +				/* open, possibly creating INBOX */
   1.297 +  if (((fd = open (tmp,O_BINARY|(stream->rdonly ? O_RDONLY:O_RDWR),NIL)) < 0)&&
   1.298 +      (compare_cstring (stream->mailbox,"INBOX") ||
   1.299 +       ((fd = open (tmp,O_BINARY|O_RDWR|O_CREAT|O_EXCL,S_IREAD|S_IWRITE))<0))){
   1.300 +    sprintf (tmp,"Can't open mailbox: %s",strerror (errno));
   1.301 +    mm_log (tmp,ERROR);
   1.302 +    return NIL;
   1.303 +  }
   1.304 +  stream->local = fs_get (sizeof (MTXLOCAL));
   1.305 +				/* canonicalize the stream mailbox name */
   1.306 +  fs_give ((void **) &stream->mailbox);
   1.307 +  if (s = strchr ((s = strrchr (tmp,'\\')) ? s : tmp,'.')) *s = '\0';
   1.308 +  stream->mailbox = cpystr (tmp);
   1.309 +  LOCAL->fd = fd;		/* note the file */
   1.310 +  LOCAL->filesize = 0;		/* initialize parsed file size */
   1.311 +  LOCAL->buf = NIL;		/* initially no local buffer */
   1.312 +  stream->sequence++;		/* bump sequence number */
   1.313 +  stream->uid_validity = time (0);
   1.314 +				/* parse mailbox */
   1.315 +  stream->nmsgs = stream->recent = 0;
   1.316 +  if (!mtx_ping (stream)) return NIL;
   1.317 +  if (!stream->nmsgs) mm_log ("Mailbox is empty",(long) NIL);
   1.318 +  stream->perm_seen = stream->perm_deleted =
   1.319 +    stream->perm_flagged = stream->perm_answered = stream->perm_draft =
   1.320 +      stream->rdonly ? NIL : T;
   1.321 +  stream->perm_user_flags = stream->rdonly ? NIL : 0xffffffff;
   1.322 +  return stream;		/* return stream to caller */
   1.323 +}
   1.324 +
   1.325 +/* MTX mail close
   1.326 + * Accepts: MAIL stream
   1.327 + *	    close options
   1.328 + */
   1.329 +
   1.330 +void mtx_close (MAILSTREAM *stream,long options)
   1.331 +{
   1.332 +  if (stream && LOCAL) {	/* only if a file is open */
   1.333 +    int silent = stream->silent;
   1.334 +    stream->silent = T;
   1.335 +    if (options & CL_EXPUNGE) mtx_expunge (stream,NIL,NIL);
   1.336 +    close (LOCAL->fd);		/* close the local file */
   1.337 +    if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.338 +				/* nuke the local data */
   1.339 +    fs_give ((void **) &stream->local);
   1.340 +    stream->dtb = NIL;		/* log out the DTB */
   1.341 +  }
   1.342 +}
   1.343 +
   1.344 +/* MTX mail fetch message header
   1.345 + * Accepts: MAIL stream
   1.346 + *	    message # to fetch
   1.347 + *	    pointer to returned header text length
   1.348 + *	    option flags
   1.349 + * Returns: message header in RFC822 format
   1.350 + */
   1.351 +
   1.352 +char *mtx_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
   1.353 +		  long flags)
   1.354 +{
   1.355 +  *length = 0;			/* default to empty */
   1.356 +  if (flags & FT_UID) return "";/* UID call "impossible" */
   1.357 +				/* get to header position */
   1.358 +  lseek (LOCAL->fd,mtx_hdrpos (stream,msgno,length),L_SET);
   1.359 +				/* is buffer big enough? */
   1.360 +  if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.361 +  LOCAL->buf = (char *) fs_get ((size_t) *length + 1);
   1.362 +  LOCAL->buf[*length] = '\0';	/* tie off string */
   1.363 +				/* slurp the data */
   1.364 +  read (LOCAL->fd,LOCAL->buf,(size_t) *length);
   1.365 +  return LOCAL->buf;
   1.366 +}
   1.367 +
   1.368 +
   1.369 +/* MTX mail fetch message text (body only)
   1.370 + * Accepts: MAIL stream
   1.371 + *	    message # to fetch
   1.372 + *	    pointer to returned header text length
   1.373 + *	    option flags
   1.374 + * Returns: T, always
   1.375 + */
   1.376 +
   1.377 +long mtx_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
   1.378 +{
   1.379 +  MESSAGECACHE *elt;
   1.380 +  FDDATA d;
   1.381 +  unsigned long hdrsize,hdrpos;
   1.382 +				/* UID call "impossible" */
   1.383 +  if (flags & FT_UID) return NIL;
   1.384 +  elt = mail_elt (stream,msgno);/* if message not seen */
   1.385 +  if (elt->seen && !(flags & FT_PEEK)) {
   1.386 +    elt->seen = T;		/* mark message as seen */
   1.387 +				/* recalculate status */
   1.388 +    mtx_update_status (stream,msgno);
   1.389 +    mm_flags (stream,msgno);
   1.390 +  }
   1.391 +				/* get location of text data */
   1.392 +  hdrpos = mtx_hdrpos (stream,msgno,&hdrsize);
   1.393 +  d.fd = LOCAL->fd;		/* set initial stringstruct */
   1.394 +  d.pos = hdrpos + hdrsize;
   1.395 +				/* flush old buffer */
   1.396 +  if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
   1.397 +  d.chunk = LOCAL->buf = (char *) fs_get ((size_t) d.chunksize = CHUNKSIZE);
   1.398 +  INIT (bs,fd_string,(void *) &d,elt->rfc822_size - hdrsize);
   1.399 +  return T;			/* success */
   1.400 +}
   1.401 +
   1.402 +/* MTX mail per-message modify flags
   1.403 + * Accepts: MAIL stream
   1.404 + *	    message cache element
   1.405 + */
   1.406 +
   1.407 +void mtx_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
   1.408 +{
   1.409 +				/* recalculate status */
   1.410 +  mtx_update_status (stream,elt->msgno);
   1.411 +}
   1.412 +
   1.413 +
   1.414 +/* MTX mail ping mailbox
   1.415 + * Accepts: MAIL stream
   1.416 + * Returns: T if stream still alive, NIL if not
   1.417 + */
   1.418 +
   1.419 +long mtx_ping (MAILSTREAM *stream)
   1.420 +{
   1.421 +				/* punt if stream no longer alive */
   1.422 +  if (!(stream && LOCAL)) return NIL;
   1.423 +				/* parse mailbox, punt if parse dies */
   1.424 +  return (mtx_parse (stream)) ? T : NIL;
   1.425 +}
   1.426 +
   1.427 +
   1.428 +/* MTX mail check mailbox (reparses status too)
   1.429 + * Accepts: MAIL stream
   1.430 + */
   1.431 +
   1.432 +void mtx_check (MAILSTREAM *stream)
   1.433 +{
   1.434 +  unsigned long i = 1;
   1.435 +  if (mtx_ping (stream)) {	/* ping mailbox */
   1.436 +				/* get new message status */
   1.437 +    while (i <= stream->nmsgs) mail_elt (stream,i++);
   1.438 +    mm_log ("Check completed",(long) NIL);
   1.439 +  }
   1.440 +}
   1.441 +
   1.442 +/* MTX mail expunge mailbox
   1.443 + * Accepts: MAIL stream
   1.444 + *	    sequence to expunge if non-NIL
   1.445 + *	    expunge options
   1.446 + * Returns: T, always
   1.447 + */
   1.448 +
   1.449 +long mtx_expunge (MAILSTREAM *stream,char *sequence,long options)
   1.450 +{
   1.451 +  long ret;
   1.452 +  unsigned long i = 1;
   1.453 +  unsigned long j,k,m,recent;
   1.454 +  unsigned long n = 0;
   1.455 +  unsigned long delta = 0;
   1.456 +  MESSAGECACHE *elt;
   1.457 +  char tmp[MAILTMPLEN];
   1.458 +  if (!(ret = (sequence ? ((options & EX_UID) ?
   1.459 +			   mail_uid_sequence (stream,sequence) :
   1.460 +			   mail_sequence (stream,sequence)) : LONGT) &&
   1.461 +	mtx_ping (stream)));	/* parse sequence if given, ping stream */
   1.462 +  else if (stream->rdonly) mm_log ("Expunge ignored on readonly mailbox",WARN);
   1.463 +  else {
   1.464 +    mm_critical (stream);	/* go critical */
   1.465 +    recent = stream->recent;	/* get recent now that pinged */ 
   1.466 +    while (i <= stream->nmsgs) {/* for each message */
   1.467 +      elt = mail_elt (stream,i);/* get cache element */
   1.468 +				/* number of bytes to smash or preserve */
   1.469 +      k = elt->private.special.text.size + elt->rfc822_size;
   1.470 +				/* if need to expunge this message */
   1.471 +      if (elt->deleted && (sequence ? elt->sequence : T)) {
   1.472 +				/* if recent, note one less recent message */
   1.473 +	if (elt->recent) --recent;
   1.474 +	delta += k;		/* number of bytes to delete */
   1.475 +				/* notify upper levels */
   1.476 +	mail_expunged (stream,i);
   1.477 +	n++;			/* count up one more deleted message */
   1.478 +      }
   1.479 +      else if (i++ && delta) {	/* preserved message */
   1.480 +				/* first byte to preserve */
   1.481 +	j = elt->private.special.offset;
   1.482 +	do {			/* read from source position */
   1.483 +	  m = min (k,(unsigned long) MAILTMPLEN);
   1.484 +	  lseek (LOCAL->fd,j,SEEK_SET);
   1.485 +	  read (LOCAL->fd,tmp,(size_t) m);
   1.486 +				/* write to destination position */
   1.487 +	  lseek (LOCAL->fd,j - delta,SEEK_SET);
   1.488 +	  write (LOCAL->fd,tmp,(size_t) m);
   1.489 +	  j += m;		/* next chunk, perhaps */
   1.490 +	} while (k -= m);	/* until done */
   1.491 +	elt->private.special.offset -= delta;
   1.492 +      }
   1.493 +    }
   1.494 +    if (n) {			/* truncate file after last message */
   1.495 +      chsize (LOCAL->fd,LOCAL->filesize -= delta);
   1.496 +      sprintf (tmp,"Expunged %ld messages",n);
   1.497 +      mm_log (tmp,(long) NIL);	/* output the news */
   1.498 +    }
   1.499 +    else mm_log ("No messages deleted, so no update needed",(long) NIL);
   1.500 +    mm_nocritical (stream);	/* release critical */
   1.501 +				/* notify upper level of new mailbox size */
   1.502 +    mail_exists (stream,stream->nmsgs);
   1.503 +    mail_recent (stream,recent);
   1.504 +  }
   1.505 +  return ret;
   1.506 +}
   1.507 +
   1.508 +/* MTX mail copy message(s)
   1.509 + * Accepts: MAIL stream
   1.510 + *	    sequence
   1.511 + *	    destination mailbox
   1.512 + *	    copy options
   1.513 + * Returns: T if success, NIL if failed
   1.514 + */
   1.515 +
   1.516 +long mtx_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
   1.517 +{
   1.518 +  char tmp[MAILTMPLEN];
   1.519 +  struct stat sbuf;
   1.520 +  MESSAGECACHE *elt;
   1.521 +  unsigned long i,j,k;
   1.522 +  long ret = LONGT;
   1.523 +  int fd;
   1.524 +  mailproxycopy_t pc =
   1.525 +    (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
   1.526 +  if (!((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
   1.527 +	mail_sequence (stream,sequence))) return NIL;
   1.528 +  if (!mtx_isvalid (mailbox,tmp)) switch (errno) {
   1.529 +  case ENOENT:			/* no such file? */
   1.530 +    mm_notify (stream,"[TRYCREATE] Must create mailbox before append",
   1.531 +	       (long) NIL);
   1.532 +    return NIL;
   1.533 +  case 0:			/* merely empty file? */
   1.534 +    break;
   1.535 +  case EINVAL:			/* name is bogus */
   1.536 +    if (pc) return (*pc) (stream,sequence,mailbox,options);
   1.537 +    return mtx_badname (tmp,mailbox);
   1.538 +  default:			/* file exists, but not valid format */
   1.539 +    if (pc) return (*pc) (stream,sequence,mailbox,options);
   1.540 +    sprintf (tmp,"Not a MTX-format mailbox: %s",mailbox);
   1.541 +    mm_log (tmp,ERROR);
   1.542 +    return NIL;
   1.543 +  }
   1.544 +				/* open the destination */
   1.545 +  if (!mailboxfile (tmp,mailbox) ||
   1.546 +      (fd = open (tmp,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
   1.547 +		  S_IREAD|S_IWRITE)) < 0) {
   1.548 +    sprintf (tmp,"Unable to open copy mailbox: %s",strerror (errno));
   1.549 +    mm_log (tmp,ERROR);
   1.550 +    return NIL;
   1.551 +  }
   1.552 +
   1.553 +  mm_critical (stream);		/* go critical */
   1.554 +  fstat (fd,&sbuf);		/* get current file size */
   1.555 +				/* for each requested message */
   1.556 +  for (i = 1; ret && (i <= stream->nmsgs); i++)
   1.557 +    if ((elt = mail_elt (stream,i))->sequence) {
   1.558 +      lseek (LOCAL->fd,elt->private.special.offset,SEEK_SET);
   1.559 +				/* number of bytes to copy */
   1.560 +      k = elt->private.special.text.size + elt->rfc822_size;
   1.561 +      do {			/* read from source position */
   1.562 +	j = min (k,(long) MAILTMPLEN);
   1.563 +	read (LOCAL->fd,tmp,(size_t) j);
   1.564 +	if (write (fd,tmp,(size_t) j) < 0) {
   1.565 +	  sprintf (tmp,"Unable to write message: %s",strerror (errno));
   1.566 +	  mm_log (tmp,ERROR);
   1.567 +	  chsize (fd,sbuf.st_size);
   1.568 +	  j = k;
   1.569 +	  ret = NIL;		/* note error */
   1.570 +	  break;
   1.571 +	}
   1.572 +      } while (k -= j);		/* until done */
   1.573 +    }
   1.574 +  close (fd);			/* close the file */
   1.575 +  mm_nocritical (stream);	/* release critical */
   1.576 +				/* delete all requested messages */
   1.577 +  if (ret && (options & CP_MOVE)) for (i = 1; i <= stream->nmsgs; i++)
   1.578 +    if ((elt = mail_elt (stream,i))->sequence) {
   1.579 +      elt->deleted = T;		/* mark message deleted */
   1.580 +				/* recalculate status */
   1.581 +      mtx_update_status (stream,i);
   1.582 +    }
   1.583 +  if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
   1.584 +    mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
   1.585 +  return ret;
   1.586 +}
   1.587 +
   1.588 +/* MTX mail append message from stringstruct
   1.589 + * Accepts: MAIL stream
   1.590 + *	    destination mailbox
   1.591 + *	    append callback
   1.592 + *	    data for callback
   1.593 + * Returns: T if append successful, else NIL
   1.594 + */
   1.595 +
   1.596 +long mtx_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
   1.597 +{
   1.598 +  struct stat sbuf;
   1.599 +  int fd,ld,c;
   1.600 +  char *flags,*date,tmp[MAILTMPLEN],file[MAILTMPLEN];
   1.601 +  FILE *df;
   1.602 +  MESSAGECACHE elt;
   1.603 +  long f;
   1.604 +  unsigned long i,uf;
   1.605 +  STRING *message;
   1.606 +  long ret = LONGT;
   1.607 +				/* default stream to prototype */
   1.608 +  if (!stream) stream = &mtxproto;
   1.609 +				/* make sure valid mailbox */
   1.610 +  if (!mtx_isvalid (mailbox,tmp)) switch (errno) {
   1.611 +  case ENOENT:			/* no such file? */
   1.612 +    if (((mailbox[0] == 'I') || (mailbox[0] == 'i')) &&
   1.613 +	((mailbox[1] == 'N') || (mailbox[1] == 'n')) &&
   1.614 +	((mailbox[2] == 'B') || (mailbox[2] == 'b')) &&
   1.615 +	((mailbox[3] == 'O') || (mailbox[3] == 'o')) &&
   1.616 +	((mailbox[4] == 'X') || (mailbox[4] == 'x')) && !mailbox[5])
   1.617 +      dummy_create (NIL,"INBOX.MTX");
   1.618 +    else {
   1.619 +      mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
   1.620 +      return NIL;
   1.621 +    }
   1.622 +				/* falls through */
   1.623 +  case 0:			/* merely empty file? */
   1.624 +    break;
   1.625 +  case EINVAL:
   1.626 +    return mtx_badname (tmp,mailbox);
   1.627 +  default:
   1.628 +    sprintf (tmp,"Not a MTX-format mailbox: %.80s",mailbox);
   1.629 +    mm_log (tmp,ERROR);
   1.630 +    return NIL;
   1.631 +  }
   1.632 +				/* get first message */
   1.633 +  if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
   1.634 +				/* open destination mailbox */
   1.635 +  if (!mailboxfile (file,mailbox) ||
   1.636 +      ((fd = open (file,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,
   1.637 +		   S_IREAD|S_IWRITE)) < 0) || !(df = fdopen (fd,"ab"))) {
   1.638 +    sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
   1.639 +    mm_log (tmp,ERROR);
   1.640 +    return NIL;
   1.641 +  }
   1.642 +  mm_critical (stream);		/* go critical */
   1.643 +  fstat (fd,&sbuf);		/* get current file size */
   1.644 +
   1.645 +  errno = 0;
   1.646 +  do {				/* parse flags */
   1.647 +    if (!SIZE (message)) {	/* guard against zero-length */
   1.648 +      mm_log ("Append of zero-length message",ERROR);
   1.649 +      ret = NIL;
   1.650 +      break;
   1.651 +    }
   1.652 +    f = mail_parse_flags (stream,flags,&i);
   1.653 +				/* reverse bits (dontcha wish we had CIRC?) */
   1.654 +    for (uf = 0; i; uf |= 1 << (29 - find_rightmost_bit (&i)));
   1.655 +    if (date) {			/* parse date if given */
   1.656 +      if (!mail_parse_date (&elt,date)) {
   1.657 +	sprintf (tmp,"Bad date in append: %.80s",date);
   1.658 +	mm_log (tmp,ERROR);
   1.659 +	ret = NIL;		/* mark failure */
   1.660 +	break;
   1.661 +      }
   1.662 +      mail_date (tmp,&elt);	/* write preseved date */
   1.663 +    }
   1.664 +    else internal_date (tmp);	/* get current date in IMAP format */
   1.665 +				/* write header */
   1.666 +    if (fprintf (df,"%s,%lu;%010lo%02lo\015\012",tmp,i = SIZE (message),uf,
   1.667 +		 (unsigned long) f) < 0) ret = NIL;
   1.668 +    else {			/* write message */
   1.669 +      if (i) do c = 0xff & SNX (message);
   1.670 +      while ((putc (c,df) != EOF) && --i);
   1.671 +				/* get next message */
   1.672 +      if (i || !(*af) (stream,data,&flags,&date,&message)) ret = NIL;
   1.673 +    }
   1.674 +  } while (ret && message);
   1.675 +				/* revert file if failure */
   1.676 +  if (!ret || (fflush (df) == EOF)) {
   1.677 +    chsize (fd,sbuf.st_size);	/* revert file */
   1.678 +    close (fd);			/* make sure fclose() doesn't corrupt us */
   1.679 +    if (errno) {
   1.680 +      sprintf (tmp,"Message append failed: %s",strerror (errno));
   1.681 +      mm_log (tmp,ERROR);
   1.682 +    }
   1.683 +    ret = NIL;
   1.684 +  }
   1.685 +  fclose (df);			/* close the file */ 
   1.686 +  mm_nocritical (stream);	/* release critical */
   1.687 +  if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
   1.688 +    mm_log ("Can not return meaningful APPENDUID with this mailbox format",
   1.689 +	    WARN);
   1.690 +  return ret;
   1.691 +}
   1.692 +
   1.693 +
   1.694 +/* Return bad file name error message
   1.695 + * Accepts: temporary buffer
   1.696 + *	    file name
   1.697 + * Returns: long NIL always
   1.698 + */
   1.699 +
   1.700 +long mtx_badname (char *tmp,char *s)
   1.701 +{
   1.702 +  sprintf (tmp,"Invalid mailbox name: %s",s);
   1.703 +  mm_log (tmp,ERROR);
   1.704 +  return (long) NIL;
   1.705 +}
   1.706 +
   1.707 +/* Parse mailbox
   1.708 + * Accepts: MAIL stream
   1.709 + * Returns: T if parse OK
   1.710 + *	    NIL if failure, stream aborted
   1.711 + */
   1.712 +
   1.713 +long mtx_parse (MAILSTREAM *stream)
   1.714 +{
   1.715 +  struct stat sbuf;
   1.716 +  MESSAGECACHE *elt = NIL;
   1.717 +  unsigned char *s,*t,*x,lbuf[65];
   1.718 +  char tmp[MAILTMPLEN];
   1.719 +  long i;
   1.720 +  long curpos = LOCAL->filesize;
   1.721 +  long nmsgs = stream->nmsgs;
   1.722 +  long recent = stream->recent;
   1.723 +  fstat (LOCAL->fd,&sbuf);	/* get status */
   1.724 +  if (sbuf.st_size < curpos) {	/* sanity check */
   1.725 +    sprintf (tmp,"Mailbox shrank from %ld to %ld!",curpos,sbuf.st_size);
   1.726 +    mm_log (tmp,ERROR);
   1.727 +    mtx_close (stream,NIL);
   1.728 +    return NIL;
   1.729 +  }
   1.730 +				/* while there is stuff to parse */
   1.731 +  while (i = sbuf.st_size - curpos) {
   1.732 +				/* get to that position in the file */
   1.733 +    lseek (LOCAL->fd,curpos,SEEK_SET);
   1.734 +    if ((i = read (LOCAL->fd,lbuf,64)) <= 0) {
   1.735 +      sprintf (tmp,"Unable to read internal header at %ld, size = %ld: %s",
   1.736 +	       curpos,sbuf.st_size,i ? strerror (errno) : "no data read");
   1.737 +      mm_log (tmp,ERROR);
   1.738 +      mtx_close (stream,NIL);
   1.739 +      return NIL;
   1.740 +    }
   1.741 +    lbuf[i] = '\0';		/* tie off buffer just in case */
   1.742 +    if (!((s = strchr (lbuf,'\015')) && (s[1] == '\012'))) {
   1.743 +      sprintf (tmp,"Unable to find end of line at %ld in %ld bytes, text: %s",
   1.744 +	       curpos,i,(char *) lbuf);
   1.745 +      mm_log (tmp,ERROR);
   1.746 +      mtx_close (stream,NIL);
   1.747 +      return NIL;
   1.748 +    }
   1.749 +    *s = '\0';			/* tie off header line */
   1.750 +    i = (s + 2) - lbuf;		/* note start of text offset */
   1.751 +    if (!((s = strchr (lbuf,',')) && (t = strchr (s+1,';')))) {
   1.752 +      sprintf (tmp,"Unable to parse internal header at %ld: %s",curpos,
   1.753 +	       (char *) lbuf);
   1.754 +      mm_log (tmp,ERROR);
   1.755 +      mtx_close (stream,NIL);
   1.756 +      return NIL;
   1.757 +    }
   1.758 +
   1.759 +    *s++ = '\0'; *t++ = '\0';	/* tie off fields */
   1.760 +				/* intantiate an elt for this message */
   1.761 +    (elt = mail_elt (stream,++nmsgs))->valid = T;
   1.762 +    elt->private.uid = ++stream->uid_last;
   1.763 +				/* note file offset of header */
   1.764 +    elt->private.special.offset = curpos;
   1.765 +				/* as well as offset from header of message */
   1.766 +    elt->private.special.text.size = i;
   1.767 +				/* header size not known yet */
   1.768 +    elt->private.msg.header.text.size = 0;
   1.769 +				/* parse the header components */
   1.770 +    if (!(mail_parse_date (elt,lbuf) &&
   1.771 +	  (elt->rfc822_size = strtol (x = s,(char **) &s,10)) && (!(s && *s))&&
   1.772 +	  isdigit (t[0]) && isdigit (t[1]) && isdigit (t[2]) &&
   1.773 +	  isdigit (t[3]) && isdigit (t[4]) && isdigit (t[5]) &&
   1.774 +	  isdigit (t[6]) && isdigit (t[7]) && isdigit (t[8]) &&
   1.775 +	  isdigit (t[9]) && isdigit (t[10]) && isdigit (t[11]) && !t[12])) {
   1.776 +      sprintf (tmp,"Unable to parse internal header elements at %ld: %s,%s;%s",
   1.777 +	       curpos,(char *) lbuf,(char *) x,(char *) t);
   1.778 +      mtx_close (stream,NIL);
   1.779 +      return NIL;
   1.780 +    }
   1.781 +				/* update current position to next header */
   1.782 +    curpos += i + elt->rfc822_size;
   1.783 +				/* calculate system flags */
   1.784 +    if ((i = ((t[10]-'0') * 8) + t[11]-'0') & fSEEN) elt->seen = T;
   1.785 +    if (i & fDELETED) elt->deleted = T;
   1.786 +    if (i & fFLAGGED) elt->flagged = T;
   1.787 +    if (i & fANSWERED) elt->answered = T;
   1.788 +    if (i & fDRAFT) elt->draft = T;
   1.789 +    if (curpos > sbuf.st_size) {
   1.790 +      sprintf (tmp,"Last message (at %lu) runs past end of file (%lu > %lu)",
   1.791 +	       elt->private.special.offset,curpos,sbuf.st_size);
   1.792 +      mm_log (tmp,ERROR);
   1.793 +      mtx_close (stream,NIL);
   1.794 +      return NIL;
   1.795 +    }
   1.796 +  }
   1.797 +				/* update parsed file size */
   1.798 +  LOCAL->filesize = sbuf.st_size;
   1.799 +  mail_exists (stream,nmsgs);	/* notify upper level of new mailbox size */
   1.800 +  mail_recent (stream,recent);	/* and of change in recent messages */
   1.801 +  return T;			/* return the winnage */
   1.802 +}
   1.803 +
   1.804 +/* Update status string
   1.805 + * Accepts: MAIL stream
   1.806 + *	    message number
   1.807 + */
   1.808 +
   1.809 +void mtx_update_status (MAILSTREAM *stream,unsigned long msgno)
   1.810 +{
   1.811 +  char tmp[MAILTMPLEN];
   1.812 +  MESSAGECACHE *elt = mail_elt (stream,msgno);
   1.813 +  unsigned long j,k = 0;
   1.814 +				/* not if readonly you don't */
   1.815 +  if (stream->rdonly || !elt->valid) return;
   1.816 +  j = elt->user_flags;		/* get user flags */
   1.817 +				/* reverse bits (dontcha wish we had CIRC?) */
   1.818 +  while (j) k |= 1 << 29 - find_rightmost_bit (&j);
   1.819 +  sprintf (tmp,"%010lo%02o",k,	/* print new flag string */
   1.820 +	   fOLD + (fSEEN * elt->seen) + (fDELETED * elt->deleted) +
   1.821 +	   (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
   1.822 +	   (fDRAFT * elt->draft));
   1.823 +				/* get to that place in the file */
   1.824 +  lseek (LOCAL->fd,(off_t) elt->private.special.offset +
   1.825 +	 elt->private.special.text.size - 14,SEEK_SET);
   1.826 +  write (LOCAL->fd,tmp,12);	/* write new flags */
   1.827 +}
   1.828 +
   1.829 +/* MTX locate header for a message
   1.830 + * Accepts: MAIL stream
   1.831 + *	    message number
   1.832 + *	    pointer to returned header size
   1.833 + * Returns: position of header in file
   1.834 + */
   1.835 +
   1.836 +unsigned long mtx_hdrpos (MAILSTREAM *stream,unsigned long msgno,
   1.837 +			  unsigned long *size)
   1.838 +{
   1.839 +  unsigned long siz;
   1.840 +  size_t i = 0;
   1.841 +  int q = 0;
   1.842 +  char *s,tmp[MAILTMPLEN];
   1.843 +  MESSAGECACHE *elt = mail_elt (stream,msgno);
   1.844 +  long pos = elt->private.special.offset + elt->private.special.text.size;
   1.845 +				/* is header size known? */
   1.846 +  if (!(*size = elt->private.msg.header.text.size)) {
   1.847 +				/* get to header position */
   1.848 +    lseek (LOCAL->fd,pos,SEEK_SET);
   1.849 +				/* search message for CRLF CRLF */
   1.850 +    for (siz = 1; siz <= elt->rfc822_size; siz++) {
   1.851 +      if (!i &&			/* buffer empty? */
   1.852 +	  (read (LOCAL->fd,s = tmp,
   1.853 +		 i = (size_t) min(elt->rfc822_size-siz,(long)MAILTMPLEN))<= 0))
   1.854 +	return pos;
   1.855 +      else i--;
   1.856 +      switch (q) {		/* sniff at buffer */
   1.857 +      case 0:			/* first character */
   1.858 +	q = (*s++ == '\015') ? 1 : 0;
   1.859 +	break;
   1.860 +      case 1:			/* second character */
   1.861 +	q = (*s++ == '\012') ? 2 : 0;
   1.862 +	break;
   1.863 +      case 2:			/* third character */
   1.864 +	q = (*s++ == '\015') ? 3 : 0;
   1.865 +	break;
   1.866 +      case 3:			/* fourth character */
   1.867 +	if (*s++ == '\012') {	/* have the sequence? */
   1.868 +				/* yes, note for later */
   1.869 +	  elt->private.msg.header.text.size = (*size = siz);
   1.870 +	  return pos;		/* return to caller */
   1.871 +	}
   1.872 +	q = 0;			/* lost... */
   1.873 +	break;
   1.874 +      }
   1.875 +    }
   1.876 +  }
   1.877 +  return pos;			/* have position */
   1.878 +}