1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/osdep/dos/dummydos.c	Mon Sep 14 15:17:45 2009 +0900
     1.3 @@ -0,0 +1,689 @@
     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:	Dummy routines for DOS
    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 May 1993
    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 <sys\stat.h>
    1.39 +#include <dos.h>
    1.40 +#include "dummy.h"
    1.41 +#include "misc.h"
    1.42 +
    1.43 +/* Function prototypes */
    1.44 +
    1.45 +DRIVER *dummy_valid (char *name);
    1.46 +void *dummy_parameters (long function,void *value);
    1.47 +void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents,
    1.48 +		      long level);
    1.49 +long dummy_listed (MAILSTREAM *stream,char delimiter,char *name,
    1.50 +		   long attributes,char *contents);
    1.51 +long dummy_subscribe (MAILSTREAM *stream,char *mailbox);
    1.52 +MAILSTREAM *dummy_open (MAILSTREAM *stream);
    1.53 +void dummy_close (MAILSTREAM *stream,long options);
    1.54 +long dummy_ping (MAILSTREAM *stream);
    1.55 +void dummy_check (MAILSTREAM *stream);
    1.56 +long dummy_expunge (MAILSTREAM *stream,char *sequence,long options);
    1.57 +long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
    1.58 +long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
    1.59 +long dummy_badname (char *tmp,char *s);
    1.60 +
    1.61 +/* Dummy routines */
    1.62 +
    1.63 +
    1.64 +/* Driver dispatch used by MAIL */
    1.65 +
    1.66 +DRIVER dummydriver = {
    1.67 +  "dummy",			/* driver name */
    1.68 +  DR_LOCAL|DR_MAIL,		/* driver flags */
    1.69 +  (DRIVER *) NIL,		/* next driver */
    1.70 +  dummy_valid,			/* mailbox is valid for us */
    1.71 +  dummy_parameters,		/* manipulate parameters */
    1.72 +  dummy_scan,			/* scan mailboxes */
    1.73 +  dummy_list,			/* list mailboxes */
    1.74 +  dummy_lsub,			/* list subscribed mailboxes */
    1.75 +  dummy_subscribe,		/* subscribe to mailbox */
    1.76 +  NIL,				/* unsubscribe from mailbox */
    1.77 +  dummy_create,			/* create mailbox */
    1.78 +  dummy_delete,			/* delete mailbox */
    1.79 +  dummy_rename,			/* rename mailbox */
    1.80 +  mail_status_default,		/* status of mailbox */
    1.81 +  dummy_open,			/* open mailbox */
    1.82 +  dummy_close,			/* close mailbox */
    1.83 +  NIL,				/* fetch message "fast" attributes */
    1.84 +  NIL,				/* fetch message flags */
    1.85 +  NIL,				/* fetch overview */
    1.86 +  NIL,				/* fetch message structure */
    1.87 +  NIL,				/* fetch header */
    1.88 +  NIL,				/* fetch text */
    1.89 +  NIL,				/* fetch message data */
    1.90 +  NIL,				/* unique identifier */
    1.91 +  NIL,				/* message number from UID */
    1.92 +  NIL,				/* modify flags */
    1.93 +  NIL,				/* per-message modify flags */
    1.94 +  NIL,				/* search for message based on criteria */
    1.95 +  NIL,				/* sort messages */
    1.96 +  NIL,				/* thread messages */
    1.97 +  dummy_ping,			/* ping mailbox to see if still alive */
    1.98 +  dummy_check,			/* check for new messages */
    1.99 +  dummy_expunge,		/* expunge deleted messages */
   1.100 +  dummy_copy,			/* copy messages to another mailbox */
   1.101 +  dummy_append,			/* append string message to mailbox */
   1.102 +  NIL				/* garbage collect stream */
   1.103 +};
   1.104 +
   1.105 +
   1.106 +				/* prototype stream */
   1.107 +MAILSTREAM dummyproto = {&dummydriver};
   1.108 +
   1.109 +				/* driver parameters */
   1.110 +static char *file_extension = NIL;
   1.111 +
   1.112 +/* Dummy validate mailbox
   1.113 + * Accepts: mailbox name
   1.114 + * Returns: our driver if name is valid, NIL otherwise
   1.115 + */
   1.116 +
   1.117 +DRIVER *dummy_valid (char *name)
   1.118 +{
   1.119 +  char *s,tmp[MAILTMPLEN];
   1.120 +  struct stat sbuf;
   1.121 +				/* must be valid local mailbox */
   1.122 +  return (name && *name && (*name != '{') &&
   1.123 +	  (s = mailboxfile (tmp,name)) && (!*s || !stat (s,&sbuf))) ?
   1.124 +	    &dummydriver : NIL;
   1.125 +}
   1.126 +
   1.127 +
   1.128 +/* Dummy manipulate driver parameters
   1.129 + * Accepts: function code
   1.130 + *	    function-dependent value
   1.131 + * Returns: function-dependent return value
   1.132 + */
   1.133 +
   1.134 +void *dummy_parameters (long function,void *value)
   1.135 +{
   1.136 +  void *ret = NIL;
   1.137 +  switch ((int) function) {
   1.138 +  case SET_EXTENSION:
   1.139 +    if (file_extension) fs_give ((void **) &file_extension);
   1.140 +    if (*(char *) value) file_extension = cpystr ((char *) value);
   1.141 +  case GET_EXTENSION:
   1.142 +    ret = (void *) file_extension;
   1.143 +  }
   1.144 +  return ret;
   1.145 +}
   1.146 +
   1.147 +/* Dummy scan mailboxes
   1.148 + * Accepts: mail stream
   1.149 + *	    reference
   1.150 + *	    pattern to search
   1.151 + *	    string to scan
   1.152 + */
   1.153 +
   1.154 +#define LISTTMPLEN 128
   1.155 +
   1.156 +void dummy_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
   1.157 +{
   1.158 +  char *s,test[LISTTMPLEN],file[LISTTMPLEN];
   1.159 +  long i = 0;
   1.160 +  if (!pat || !*pat) {		/* empty pattern? */
   1.161 +    if (dummy_canonicalize (test,ref,"*")) {
   1.162 +				/* tie off name at root */
   1.163 +      if (s = strchr (test,'\\')) *++s = '\0';
   1.164 +      else test[0] = '\0';
   1.165 +      dummy_listed (stream,'\\',test,LATT_NOINFERIORS,NIL);
   1.166 +    }
   1.167 +  }
   1.168 +				/* get canonical form of name */
   1.169 +  else if (dummy_canonicalize (test,ref,pat)) {
   1.170 +				/* found any wildcards? */
   1.171 +    if (s = strpbrk (test,"%*")) {
   1.172 +				/* yes, copy name up to that point */
   1.173 +      strncpy (file,test,(size_t) (i = s - test));
   1.174 +      file[i] = '\0';		/* tie off */
   1.175 +    }
   1.176 +    else strcpy (file,test);	/* use just that name then */
   1.177 +				/* find directory name */
   1.178 +    if (s = strrchr (file,'\\')) {
   1.179 +      *++s = '\0';		/* found, tie off at that point */
   1.180 +      s = file;
   1.181 +    }
   1.182 +				/* silly case */
   1.183 +    else if (file[0] == '#') s = file;
   1.184 +				/* do the work */
   1.185 +    dummy_list_work (stream,s,test,contents,0);
   1.186 +    if (pmatch ("INBOX",test))	/* always an INBOX */
   1.187 +      dummy_listed (stream,NIL,"INBOX",LATT_NOINFERIORS,contents);
   1.188 +  }
   1.189 +}
   1.190 +
   1.191 +/* Dummy list mailboxes
   1.192 + * Accepts: mail stream
   1.193 + *	    reference
   1.194 + *	    pattern to search
   1.195 + */
   1.196 +
   1.197 +void dummy_list (MAILSTREAM *stream,char *ref,char *pat)
   1.198 +{
   1.199 +  dummy_scan (stream,ref,pat,NIL);
   1.200 +}
   1.201 +
   1.202 +
   1.203 +/* Dummy list subscribed mailboxes
   1.204 + * Accepts: mail stream
   1.205 + *	    pattern to search
   1.206 + */
   1.207 +
   1.208 +void dummy_lsub (MAILSTREAM *stream,char *ref,char *pat)
   1.209 +{
   1.210 +  void *sdb = NIL;
   1.211 +  char *s,*t,test[MAILTMPLEN];
   1.212 +  int showuppers = pat[strlen (pat) - 1] == '%';
   1.213 +				/* get canonical form of name */
   1.214 +  if (dummy_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) do
   1.215 +    if (*s != '{') {
   1.216 +      if (pmatch_full (s,test,'\\')) {
   1.217 +	if (pmatch (s,"INBOX")) mm_lsub (stream,NIL,s,LATT_NOINFERIORS);
   1.218 +	else mm_lsub (stream,'\\',s,NIL);
   1.219 +      }
   1.220 +      else while (showuppers && (t = strrchr (s,'\\'))) {
   1.221 +	*t = '\0';		/* tie off the name */
   1.222 +	if (pmatch_full (s,test,'\\')) mm_lsub (stream,'\\',s,LATT_NOSELECT);
   1.223 +      }
   1.224 +    }
   1.225 +  while (s = sm_read (&sdb));	/* until no more subscriptions */
   1.226 +}
   1.227 +
   1.228 +
   1.229 +/* Dummy subscribe to mailbox
   1.230 + * Accepts: mail stream
   1.231 + *	    mailbox to add to subscription list
   1.232 + * Returns: T on success, NIL on failure
   1.233 + */
   1.234 +
   1.235 +long dummy_subscribe (MAILSTREAM *stream,char *mailbox)
   1.236 +{
   1.237 +  char *s,tmp[MAILTMPLEN];
   1.238 +  struct stat sbuf;
   1.239 +				/* must be valid local mailbox */
   1.240 +  if ((s = mailboxfile (tmp,mailbox)) && *s && !stat (s,&sbuf) &&
   1.241 +      ((sbuf.st_mode & S_IFMT) == S_IFREG)) return sm_subscribe (mailbox);
   1.242 +  sprintf (tmp,"Can't subscribe %s: not a mailbox",mailbox);
   1.243 +  mm_log (tmp,ERROR);
   1.244 +  return NIL;
   1.245 +}
   1.246 +
   1.247 +/* Dummy list mailboxes worker routine
   1.248 + * Accepts: mail stream
   1.249 + *	    directory name to search
   1.250 + *	    search pattern
   1.251 + *	    string to scan
   1.252 + *	    search level
   1.253 + */
   1.254 +
   1.255 +void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents,
   1.256 +		      long level)
   1.257 +{
   1.258 +  struct find_t f;
   1.259 +  struct stat sbuf;
   1.260 +  char *s,tmp[LISTTMPLEN],tmpx[LISTTMPLEN];
   1.261 +  char *base = (dir && (dir[0] == '\\')) ? NIL : myhomedir ();
   1.262 +				/* build name */
   1.263 +  if (base) sprintf (tmpx,"%s\\",base);
   1.264 +  else tmpx[0] = '\0';
   1.265 +  if (dir) strcat (tmpx,dir);
   1.266 +				/* punt if bogus name */
   1.267 +  if (!mailboxfile (tmp,tmpx)) return;
   1.268 +				/* make directory wildcard */
   1.269 +  strcat (tmp,(tmp[strlen (tmp) -1] == '\\') ? "*." : "\\*.");
   1.270 +  strcat (tmp,file_extension ? file_extension : "*");
   1.271 +				/* do nothing if can't open directory */
   1.272 +  if (!_dos_findfirst (tmp,_A_NORMAL|_A_SUBDIR,&f)) {
   1.273 +				/* list it if at top-level */
   1.274 +    if (!level && dir && pmatch_full (dir,pat,'\\'))
   1.275 +      dummy_listed (stream,'\\',dir,LATT_NOSELECT,contents);
   1.276 +				/* scan directory */
   1.277 +    if (tmpx[strlen (tmpx) - 1] == '\\') do if (*f.name != '.') {
   1.278 +      if (base) sprintf (tmpx,"%s\\",base);
   1.279 +      else tmpx[0] = '\0';
   1.280 +      if (dir) sprintf (tmpx + strlen (tmpx),"%s%s",dir,f.name);
   1.281 +      else strcat (tmpx,f.name);
   1.282 +      if (mailboxfile (tmp,tmpx) && !stat (tmp,&sbuf)) {
   1.283 +				/* suppress extension */
   1.284 +	if (file_extension && (s = strchr (f.name,'.'))) *s = '\0';
   1.285 +				/* now make name we'd return */
   1.286 +	if (dir) sprintf (tmp,"%s%s",dir,f.name);
   1.287 +	else strcpy (tmp,f.name);
   1.288 +				/* only interested in file type */
   1.289 +	switch (sbuf.st_mode & S_IFMT) {
   1.290 +	case S_IFDIR:		/* directory? */
   1.291 +	  if (pmatch_full (tmp,pat,'\\')) {
   1.292 +	    dummy_listed (stream,'\\',tmp,LATT_NOSELECT,contents);
   1.293 +	    strcat (tmp,"\\");	/* set up for dmatch call */
   1.294 +	  }
   1.295 +				/* try again with trailing / */
   1.296 +	  else if (pmatch_full (strcat (tmp,"\\"),pat,'\\'))
   1.297 +	    dummy_listed (stream,'\\',tmp,LATT_NOSELECT,contents);
   1.298 +	  if (dmatch (tmp,pat,'\\') &&
   1.299 +	      (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL)))
   1.300 +	    dummy_list_work (stream,tmp,pat,contents,level+1);
   1.301 +	  break;
   1.302 +	case S_IFREG:		/* ordinary name */
   1.303 +	  if (pmatch_full (tmp,pat,'\\') && !pmatch ("INBOX",tmp))
   1.304 +	    dummy_listed (stream,'\\',tmp,LATT_NOINFERIORS,contents);
   1.305 +	  break;
   1.306 +	}
   1.307 +      }
   1.308 +    }
   1.309 +    while (!_dos_findnext (&f));
   1.310 +  }
   1.311 +}
   1.312 +
   1.313 +/* Mailbox found
   1.314 + * Accepts: hierarchy delimiter
   1.315 + *	    mailbox name
   1.316 + *	    attributes
   1.317 + *	    contents to search before calling mm_list()
   1.318 + * Returns: T, always
   1.319 + */
   1.320 +
   1.321 +#define BUFSIZE MAILTMPLEN
   1.322 +
   1.323 +long dummy_listed (MAILSTREAM *stream,char delimiter,char *name,
   1.324 +		   long attributes,char *contents)
   1.325 +{
   1.326 +  struct stat sbuf;
   1.327 +  int fd;
   1.328 +  size_t csiz,ssiz,bsiz;
   1.329 +  char *buf,tmp[MAILTMPLEN];
   1.330 +  if (contents) {		/* want to search contents? */
   1.331 +				/* forget it if can't select or open */
   1.332 +    if ((attributes & LATT_NOSELECT) || !(csiz = strlen (contents)) ||
   1.333 +	!mailboxfile (tmp,name) || stat (tmp,&sbuf) || (csiz > sbuf.st_size) ||
   1.334 +	((fd = open (tmp,O_RDONLY,NIL)) < 0)) return T;
   1.335 +				/* get buffer including slop */    
   1.336 +    buf = (char *) fs_get (BUFSIZE + (ssiz = 4 * ((csiz / 4) + 1)) + 1);
   1.337 +    memset (buf,'\0',ssiz);	/* no slop area the first time */
   1.338 +    while (sbuf.st_size) {	/* until end of file */
   1.339 +      read (fd,buf+ssiz,bsiz = min (sbuf.st_size,BUFSIZE));
   1.340 +      if (search ((unsigned char *) buf,bsiz+ssiz,
   1.341 +		  (unsigned char *) contents,csiz)) break;
   1.342 +      memcpy (buf,buf+BUFSIZE,ssiz);
   1.343 +      sbuf.st_size -= bsiz;	/* note that we read that much */
   1.344 +    }
   1.345 +    fs_give ((void **) &buf);	/* flush buffer */
   1.346 +    close (fd);			/* finished with file */
   1.347 +    if (!sbuf.st_size) return T;/* not found */
   1.348 +  }
   1.349 +				/* notify main program */
   1.350 +  mm_list (stream,delimiter,name,attributes);
   1.351 +  return T;
   1.352 +}
   1.353 +
   1.354 +/* Dummy create mailbox
   1.355 + * Accepts: mail stream
   1.356 + *	    mailbox name to create
   1.357 + * Returns: T on success, NIL on failure
   1.358 + */
   1.359 +
   1.360 +long dummy_create (MAILSTREAM *stream,char *mailbox)
   1.361 +{
   1.362 +  char tmp[MAILTMPLEN];
   1.363 +  return (compare_cstring (mailbox,"INBOX") && mailboxfile (tmp,mailbox)) ?
   1.364 +    dummy_create_path (stream,tmp,NIL) : dummy_badname (tmp,mailbox);
   1.365 +}
   1.366 +
   1.367 +
   1.368 +/* Dummy create path
   1.369 + * Accepts: mail stream
   1.370 + *	    path name to create
   1.371 + *	    directory mode
   1.372 + * Returns: T on success, NIL on failure
   1.373 + */
   1.374 +
   1.375 +long dummy_create_path (MAILSTREAM *stream,char *path,long dirmode)
   1.376 +{
   1.377 +  struct stat sbuf;
   1.378 +  char c,*s,tmp[MAILTMPLEN];
   1.379 +  int fd;
   1.380 +  long ret = NIL;
   1.381 +  char *t = strrchr (path,'\\');
   1.382 +  char *pt = (path[1] == ':') ? path + 2 : path;
   1.383 +  int wantdir = t && !t[1];
   1.384 +  if (wantdir) *t = '\0';	/* flush trailing delimiter for directory */
   1.385 +				/* found superior to this name? */
   1.386 +  if ((s = strrchr (pt,'\\')) && (s != pt)) {
   1.387 +    strncpy (tmp,path,(size_t) (s - path));
   1.388 +    tmp[s - path] = '\0';	/* make directory name for stat */
   1.389 +    c = *++s;			/* tie off in case need to recurse */
   1.390 +    *s = '\0';
   1.391 +				/* name doesn't exist, create it */
   1.392 +    if ((stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
   1.393 +	!dummy_create_path (stream,path,dirmode)) return NIL;
   1.394 +    *s = c;			/* restore full name */
   1.395 +  }
   1.396 +  if (wantdir) {		/* want to create directory? */
   1.397 +    ret = !mkdir (path);
   1.398 +    *t = '\\';			/* restore directory delimiter */
   1.399 +  }
   1.400 +				/* create file */
   1.401 +  else if ((fd = open (path,O_WRONLY|O_CREAT|O_EXCL,S_IREAD|S_IWRITE)) >= 0)
   1.402 +    ret = !close (fd);		/* close file */
   1.403 +  if (!ret) {			/* error? */
   1.404 +    sprintf (tmp,"Can't create mailbox node %s: %s",path,strerror (errno));
   1.405 +    mm_log (tmp,ERROR);
   1.406 +  }
   1.407 +  return ret;			/* return status */
   1.408 +}
   1.409 +
   1.410 +/* Dummy delete mailbox
   1.411 + * Accepts: mail stream
   1.412 + *	    mailbox name to delete
   1.413 + * Returns: T on success, NIL on failure
   1.414 + */
   1.415 +
   1.416 +long dummy_delete (MAILSTREAM *stream,char *mailbox)
   1.417 +{
   1.418 +  struct stat sbuf;
   1.419 +  char *s,tmp[MAILTMPLEN];
   1.420 +  if (!mailboxfile (tmp,mailbox)) return dummy_badname (tmp,mailbox);
   1.421 +				/* no trailing \ */
   1.422 +  if ((s = strrchr (tmp,'\\')) && !s[1]) *s = '\0';
   1.423 +  if (stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) == S_IFDIR) ?
   1.424 +      rmdir (tmp) : unlink (tmp)) {
   1.425 +    sprintf (tmp,"Can't delete mailbox %s: %s",mailbox,strerror (errno));
   1.426 +    mm_log (tmp,ERROR);
   1.427 +    return NIL;
   1.428 +  }
   1.429 +  return T;			/* return success */
   1.430 +}
   1.431 +
   1.432 +
   1.433 +/* Mail rename mailbox
   1.434 + * Accepts: mail stream
   1.435 + *	    old mailbox name
   1.436 + *	    new mailbox name
   1.437 + * Returns: T on success, NIL on failure
   1.438 + */
   1.439 +
   1.440 +long dummy_rename (MAILSTREAM *stream,char *old,char *newname)
   1.441 +{
   1.442 +  struct stat sbuf;
   1.443 +  char c,*s,tmp[MAILTMPLEN],file[MAILTMPLEN];
   1.444 +				/* make file name */
   1.445 +  if (!mailboxfile (file,old)) return dummy_badname (tmp,old);
   1.446 +				/* no trailing \ allowed */
   1.447 +  if (!(s = mailboxfile (tmp,newname)) || ((s = strrchr (s,'\\')) && !s[1]))
   1.448 +    return dummy_badname (tmp,newname);
   1.449 +  if (s) {			/* found superior to destination name? */
   1.450 +    c = *++s;			/* remember first character of inferior */
   1.451 +    *s = '\0';			/* tie off to get just superior */
   1.452 +				/* name doesn't exist, create it */
   1.453 +    if ((stat (file,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
   1.454 +	!dummy_create (stream,file)) return NIL;
   1.455 +    *s = c;			/* restore full name */
   1.456 +  }
   1.457 +  if (rename (file,tmp)) {
   1.458 +    sprintf (tmp,"Can't rename mailbox %s to %s: %s",old,newname,
   1.459 +	     strerror (errno));
   1.460 +    mm_log (tmp,ERROR);
   1.461 +    return NIL;
   1.462 +  }
   1.463 +  return LONGT;			/* return success */
   1.464 +}
   1.465 +
   1.466 +/* Dummy open
   1.467 + * Accepts: stream to open
   1.468 + * Returns: stream on success, NIL on failure
   1.469 + */
   1.470 +
   1.471 +MAILSTREAM *dummy_open (MAILSTREAM *stream)
   1.472 +{
   1.473 +  char tmp[MAILTMPLEN];
   1.474 +  struct stat sbuf;
   1.475 +  int fd = -1;
   1.476 +				/* OP_PROTOTYPE call or silence */
   1.477 +  if (!stream || stream->silent) return NIL;
   1.478 +  if (!mailboxfile (tmp,stream->mailbox))
   1.479 +    sprintf (tmp,"Can't open this name: %.80s",stream->mailbox);
   1.480 +  else if (compare_cstring (stream->mailbox,"INBOX") &&
   1.481 +      ((fd = open (tmp,O_RDONLY,NIL)) < 0))
   1.482 +    sprintf (tmp,"%s: %s",strerror (errno),stream->mailbox);
   1.483 +  else {
   1.484 +    if (fd >= 0) {		/* if got a file */
   1.485 +      fstat (fd,&sbuf);		/* sniff at its size */
   1.486 +      close (fd);
   1.487 +      if (sbuf.st_size) sprintf (tmp,"Not a mailbox: %s",stream->mailbox);
   1.488 +      else fd = -1;		/* a-OK */
   1.489 +    }
   1.490 +    if (fd < 0) {		/* no file, right? */
   1.491 +      if (!stream->silent) {	/* only if silence not requested */
   1.492 +				/* say there are 0 messages */
   1.493 +	mail_exists (stream,(long) 0);
   1.494 +	mail_recent (stream,(long) 0);
   1.495 +	stream->uid_validity = time (0);
   1.496 +      }
   1.497 +      stream->inbox = T;	/* note that it's an INBOX */
   1.498 +      return stream;		/* return success */
   1.499 +    }
   1.500 +  }
   1.501 +  mm_log (tmp,stream->silent ? WARN: ERROR);
   1.502 +  return NIL;			/* always fails */
   1.503 +}
   1.504 +
   1.505 +
   1.506 +/* Dummy close
   1.507 + * Accepts: MAIL stream
   1.508 + *	    options
   1.509 + */
   1.510 +
   1.511 +void dummy_close (MAILSTREAM *stream,long options)
   1.512 +{
   1.513 +				/* return silently */
   1.514 +}
   1.515 +
   1.516 +/* Dummy ping mailbox
   1.517 + * Accepts: MAIL stream
   1.518 + * Returns: T if stream alive, else NIL
   1.519 + * No-op for readonly files, since read/writer can expunge it from under us!
   1.520 + */
   1.521 +
   1.522 +long dummy_ping (MAILSTREAM *stream)
   1.523 +{
   1.524 +  MAILSTREAM *test;
   1.525 +				/* time to do another test? */
   1.526 +  if (time (0) >= ((time_t) (stream->gensym + 30))) {
   1.527 +				/* has mailbox format changed? */
   1.528 +    if ((test = mail_open (NIL,stream->mailbox,OP_PROTOTYPE)) &&
   1.529 +	(test->dtb != stream->dtb) &&
   1.530 +	(test = mail_open (NIL,stream->mailbox,NIL))) {
   1.531 +				/* preserve some resources */
   1.532 +      test->original_mailbox = stream->original_mailbox;
   1.533 +      stream->original_mailbox = NIL;
   1.534 +      test->sparep = stream->sparep;
   1.535 +      stream->sparep = NIL;
   1.536 +      test->sequence = stream->sequence;
   1.537 +      mail_close ((MAILSTREAM *) /* flush resources used by dummy stream */
   1.538 +		  memcpy (fs_get (sizeof (MAILSTREAM)),stream,
   1.539 +			  sizeof (MAILSTREAM)));
   1.540 +				/* swap the streams */
   1.541 +      memcpy (stream,test,sizeof (MAILSTREAM));
   1.542 +      fs_give ((void **) &test);/* flush test now that copied */
   1.543 +				/* make sure application knows */
   1.544 +      mail_exists (stream,stream->recent = stream->nmsgs);
   1.545 +    }
   1.546 +				/* still hasn't changed */
   1.547 +    else stream->gensym = time (0);
   1.548 +  }
   1.549 +  return T;
   1.550 +}
   1.551 +
   1.552 +
   1.553 +/* Dummy check mailbox
   1.554 + * Accepts: MAIL stream
   1.555 + * No-op for readonly files, since read/writer can expunge it from under us!
   1.556 + */
   1.557 +
   1.558 +void dummy_check (MAILSTREAM *stream)
   1.559 +{
   1.560 +  dummy_ping (stream);		/* invoke ping */
   1.561 +}
   1.562 +
   1.563 +
   1.564 +/* Dummy expunge mailbox
   1.565 + * Accepts: MAIL stream
   1.566 + *	    sequence to expunge if non-NIL
   1.567 + *	    expunge options
   1.568 + * Returns: T, always
   1.569 + */
   1.570 +
   1.571 +long dummy_expunge (MAILSTREAM *stream,char *sequence,long options)
   1.572 +{
   1.573 +  return LONGT;
   1.574 +}
   1.575 +
   1.576 +/* Dummy copy message(s)
   1.577 + * Accepts: MAIL stream
   1.578 + *	    sequence
   1.579 + *	    destination mailbox
   1.580 + *	    options
   1.581 + * Returns: T if copy successful, else NIL
   1.582 + */
   1.583 +
   1.584 +long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
   1.585 +{
   1.586 +  if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
   1.587 +      mail_sequence (stream,sequence)) fatal ("Impossible dummy_copy");
   1.588 +  return NIL;
   1.589 +}
   1.590 +
   1.591 +
   1.592 +/* Dummy append message string
   1.593 + * Accepts: mail stream
   1.594 + *	    destination mailbox
   1.595 + *	    append callback function
   1.596 + *	    data for callback
   1.597 + * Returns: T on success, NIL on failure
   1.598 + */
   1.599 +
   1.600 +long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
   1.601 +{
   1.602 +  struct stat sbuf;
   1.603 +  int fd = -1;
   1.604 +  int e;
   1.605 +  char tmp[MAILTMPLEN];
   1.606 +  MAILSTREAM *ts = default_proto (T);
   1.607 +  if (compare_cstring (mailbox,"INBOX") && mailboxfile (tmp,mailbox) &&
   1.608 +      ((fd = open (tmp,O_RDONLY,NIL)) < 0)) {
   1.609 +    if ((e = errno) == ENOENT)	/* failed, was it no such file? */
   1.610 +      mm_notify (stream,"[TRYCREATE] Must create mailbox before append",
   1.611 +		 (long) NIL);
   1.612 +    sprintf (tmp,"%s: %s",strerror (e),mailbox);
   1.613 +    mm_log (tmp,ERROR);		/* pass up error */
   1.614 +    return NIL;			/* always fails */
   1.615 +  }
   1.616 +  if (fd >= 0) {		/* found file? */
   1.617 +    fstat (fd,&sbuf);		/* get its size */
   1.618 +    close (fd);			/* toss out the fd */
   1.619 +    if (sbuf.st_size) ts = NIL;	/* non-empty file? */
   1.620 +  }
   1.621 +  if (ts) return (*ts->dtb->append) (stream,mailbox,af,data);
   1.622 +  sprintf (tmp,"Indeterminate mailbox format: %s",mailbox);
   1.623 +  mm_log (tmp,ERROR);
   1.624 +  return NIL;
   1.625 +}
   1.626 +
   1.627 +/* Return bad file name error message
   1.628 + * Accepts: temporary buffer
   1.629 + *	    file name
   1.630 + * Returns: long NIL always
   1.631 + */
   1.632 +
   1.633 +long dummy_badname (char *tmp,char *s)
   1.634 +{
   1.635 +  sprintf (tmp,"Invalid mailbox name: %s",s);
   1.636 +  mm_log (tmp,ERROR);
   1.637 +  return (long) NIL;
   1.638 +}
   1.639 +
   1.640 +
   1.641 +/* Dummy canonicalize name
   1.642 + * Accepts: buffer to write name
   1.643 + *	    reference
   1.644 + *	    pattern
   1.645 + * Returns: T if success, NIL if failure
   1.646 + */
   1.647 +
   1.648 +long dummy_canonicalize (char *tmp,char *ref,char *pat)
   1.649 +{
   1.650 +  unsigned long i;
   1.651 +  char *s,dev[4];
   1.652 +				/* initially no device */
   1.653 +  dev[0] = dev[1] = dev[2] = dev[3] = '\0';
   1.654 +  if (ref) switch (*ref) {	/* preliminary reference check */
   1.655 +  case '{':			/* remote names not allowed */
   1.656 +    return NIL;			/* disallowed */
   1.657 +  case '\0':			/* empty reference string */
   1.658 +    break;
   1.659 +  default:			/* all other names */
   1.660 +    if (ref[1] == ':') {	/* start with device name? */
   1.661 +      dev[0] = *ref++; dev[1] = *ref++;
   1.662 +    }
   1.663 +    break;
   1.664 +  }
   1.665 +  if (pat[1] == ':') {		/* device name in pattern? */
   1.666 +    dev[0] = *pat++; dev[1] = *pat++;
   1.667 +    ref = NIL;			/* ignore reference */
   1.668 +  }
   1.669 +  switch (*pat) {
   1.670 +  case '#':			/* namespace names */
   1.671 +    if (mailboxfile (tmp,pat)) strcpy (tmp,pat);
   1.672 +    else return NIL;		/* unknown namespace */
   1.673 +    break;
   1.674 +  case '{':			/* remote names not allowed */
   1.675 +    return NIL;
   1.676 +  case '\\':			/* rooted name */
   1.677 +    ref = NIL;			/* ignore reference */
   1.678 +    break;
   1.679 +  }
   1.680 +				/* make sure device names are rooted */
   1.681 +  if (dev[0] && (*(ref ? ref : pat) != '\\')) dev[2] = '\\';
   1.682 +				/* build name */
   1.683 +  sprintf (tmp,"%s%s%s",dev,ref ? ref : "",pat);
   1.684 +  ucase (tmp);			/* force upper case */
   1.685 +				/* count wildcards */
   1.686 +  for (i = 0, s = tmp; *s; *s++) if ((*s == '*') || (*s == '%')) ++i;
   1.687 +  if (i > MAXWILDCARDS) {	/* ridiculous wildcarding? */
   1.688 +    MM_LOG ("Excessive wildcards in LIST/LSUB",ERROR);
   1.689 +    return NIL;
   1.690 +  }
   1.691 +  return T;
   1.692 +}