imapext-2007
view src/osdep/unix/mh.c @ 0:ada5e610ab86
imap-2007e
| author | yuuji@gentei.org |
|---|---|
| date | Mon, 14 Sep 2009 15:17:45 +0900 |
| parents | |
| children |
line source
1 /* ========================================================================
2 * Copyright 1988-2007 University of Washington
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 *
11 * ========================================================================
12 */
14 /*
15 * Program: MH mail routines
16 *
17 * Author(s): Mark Crispin
18 * Networks and Distributed Computing
19 * Computing & Communications
20 * University of Washington
21 * Administration Building, AG-44
22 * Seattle, WA 98195
23 * Internet: MRC@CAC.Washington.EDU
24 *
25 * Date: 23 February 1992
26 * Last Edited: 11 October 2007
27 */
30 #include <stdio.h>
31 #include <ctype.h>
32 #include <errno.h>
33 extern int errno; /* just in case */
34 #include "mail.h"
35 #include "osdep.h"
36 #include <pwd.h>
37 #include <sys/stat.h>
38 #include <sys/time.h>
39 #include "misc.h"
40 #include "dummy.h"
41 #include "fdstring.h"
44 /* Build parameters */
46 #define MHINBOX "#mhinbox" /* corresponds to namespace in env_unix.c */
47 #define MHINBOXDIR "inbox"
48 #define MHPROFILE ".mh_profile"
49 #define MHCOMMA ','
50 #define MHSEQUENCE ".mh_sequence"
51 #define MHSEQUENCES ".mh_sequences"
52 #define MHPATH "Mail"
55 /* mh_load_message() flags */
57 #define MLM_HEADER 0x1 /* load message text */
58 #define MLM_TEXT 0x2 /* load message text */
60 /* MH I/O stream local data */
62 typedef struct mh_local {
63 char *dir; /* spool directory name */
64 unsigned char buf[CHUNKSIZE]; /* temporary buffer */
65 unsigned long cachedtexts; /* total size of all cached texts */
66 time_t scantime; /* last time directory scanned */
67 } MHLOCAL;
70 /* Convenient access to local data */
72 #define LOCAL ((MHLOCAL *) stream->local)
75 /* Function prototypes */
77 DRIVER *mh_valid (char *name);
78 int mh_isvalid (char *name,char *tmp,long synonly);
79 int mh_namevalid (char *name);
80 char *mh_path (char *tmp);
81 void *mh_parameters (long function,void *value);
82 long mh_dirfmttest (char *name);
83 void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
84 void mh_list (MAILSTREAM *stream,char *ref,char *pat);
85 void mh_lsub (MAILSTREAM *stream,char *ref,char *pat);
86 void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level);
87 long mh_subscribe (MAILSTREAM *stream,char *mailbox);
88 long mh_unsubscribe (MAILSTREAM *stream,char *mailbox);
89 long mh_create (MAILSTREAM *stream,char *mailbox);
90 long mh_delete (MAILSTREAM *stream,char *mailbox);
91 long mh_rename (MAILSTREAM *stream,char *old,char *newname);
92 MAILSTREAM *mh_open (MAILSTREAM *stream);
93 void mh_close (MAILSTREAM *stream,long options);
94 void mh_fast (MAILSTREAM *stream,char *sequence,long flags);
95 void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags);
96 char *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
97 long flags);
98 long mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
99 long mh_ping (MAILSTREAM *stream);
100 void mh_check (MAILSTREAM *stream);
101 long mh_expunge (MAILSTREAM *stream,char *sequence,long options);
102 long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,
103 long options);
104 long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
106 int mh_select (struct direct *name);
107 int mh_numsort (const void *d1,const void *d2);
108 char *mh_file (char *dst,char *name);
109 long mh_canonicalize (char *pattern,char *ref,char *pat);
110 void mh_setdate (char *file,MESSAGECACHE *elt);
112 /* MH mail routines */
115 /* Driver dispatch used by MAIL */
117 DRIVER mhdriver = {
118 "mh", /* driver name */
119 /* driver flags */
120 DR_MAIL|DR_LOCAL|DR_NOFAST|DR_NAMESPACE|DR_NOSTICKY|DR_DIRFMT,
121 (DRIVER *) NIL, /* next driver */
122 mh_valid, /* mailbox is valid for us */
123 mh_parameters, /* manipulate parameters */
124 mh_scan, /* scan mailboxes */
125 mh_list, /* find mailboxes */
126 mh_lsub, /* find subscribed mailboxes */
127 mh_subscribe, /* subscribe to mailbox */
128 mh_unsubscribe, /* unsubscribe from mailbox */
129 mh_create, /* create mailbox */
130 mh_delete, /* delete mailbox */
131 mh_rename, /* rename mailbox */
132 mail_status_default, /* status of mailbox */
133 mh_open, /* open mailbox */
134 mh_close, /* close mailbox */
135 mh_fast, /* fetch message "fast" attributes */
136 NIL, /* fetch message flags */
137 NIL, /* fetch overview */
138 NIL, /* fetch message envelopes */
139 mh_header, /* fetch message header */
140 mh_text, /* fetch message body */
141 NIL, /* fetch partial message text */
142 NIL, /* unique identifier */
143 NIL, /* message number */
144 NIL, /* modify flags */
145 NIL, /* per-message modify flags */
146 NIL, /* search for message based on criteria */
147 NIL, /* sort messages */
148 NIL, /* thread messages */
149 mh_ping, /* ping mailbox to see if still alive */
150 mh_check, /* check for new messages */
151 mh_expunge, /* expunge deleted messages */
152 mh_copy, /* copy messages to another mailbox */
153 mh_append, /* append string message to mailbox */
154 NIL /* garbage collect stream */
155 };
157 /* prototype stream */
158 MAILSTREAM mhproto = {&mhdriver};
161 static char *mh_profile = NIL; /* holds MH profile */
162 static char *mh_pathname = NIL; /* holds MH path name */
163 static long mh_once = 0; /* already snarled once */
164 static long mh_allow_inbox =NIL;/* allow INBOX as well as MHINBOX */
166 /* MH mail validate mailbox
167 * Accepts: mailbox name
168 * Returns: our driver if name is valid, NIL otherwise
169 */
171 DRIVER *mh_valid (char *name)
172 {
173 char tmp[MAILTMPLEN];
174 return mh_isvalid (name,tmp,T) ? &mhdriver : NIL;
175 }
178 /* MH mail test for valid mailbox
179 * Accepts: mailbox name
180 * temporary buffer to use
181 * syntax only test flag
182 * Returns: T if valid, NIL otherwise
183 */
185 int mh_isvalid (char *name,char *tmp,long synonly)
186 {
187 struct stat sbuf;
188 char *s,*t,altname[MAILTMPLEN];
189 unsigned long i;
190 int ret = NIL;
191 errno = NIL; /* zap any error condition */
192 /* mh name? */
193 if ((mh_allow_inbox && !compare_cstring (name,"INBOX")) ||
194 !compare_cstring (name,MHINBOX) ||
195 ((name[0] == '#') && ((name[1] == 'm') || (name[1] == 'M')) &&
196 ((name[2] == 'h') || (name[2] == 'H')) && (name[3] == '/') && name[4])){
197 if (mh_path (tmp)) /* validate name if INBOX or not synonly */
198 ret = (synonly && compare_cstring (name,"INBOX")) ?
199 T : ((stat (mh_file (tmp,name),&sbuf) == 0) &&
200 (sbuf.st_mode & S_IFMT) == S_IFDIR);
201 else if (!mh_once++) { /* only report error once */
202 sprintf (tmp,"%.900s not found, mh format names disabled",mh_profile);
203 mm_log (tmp,WARN);
204 }
205 }
206 /* see if non-NS name within mh hierarchy */
207 else if ((name[0] != '#') && (s = mh_path (tmp)) && (i = strlen (s)) &&
208 (t = mailboxfile (tmp,name)) && !strncmp (t,s,i) &&
209 (tmp[i] == '/') && tmp[i+1]) {
210 sprintf (altname,"#mh%.900s",tmp+i);
211 /* can't do synonly here! */
212 ret = mh_isvalid (altname,tmp,NIL);
213 }
214 else errno = EINVAL; /* bogus name */
215 return ret;
216 }
218 /* MH mail test for valid mailbox
219 * Accepts: mailbox name
220 * Returns: T if valid, NIL otherwise
221 */
223 int mh_namevalid (char *name)
224 {
225 char *s;
226 if (name[0] == '#' && (name[1] == 'm' || name[1] == 'M') &&
227 (name[2] == 'h' || name[2] == 'H') && name[3] == '/')
228 for (s = name; s && *s;) { /* make sure no all-digit nodes */
229 if (isdigit (*s)) s++; /* digit, check this node further... */
230 else if (*s == '/') break;/* all digit node, barf */
231 /* non-digit, skip to next node or return */
232 else if (!((s = strchr (s+1,'/')) && *++s)) return T;
233 }
234 return NIL; /* all numeric or empty node */
235 }
237 /* Return MH path
238 * Accepts: temporary buffer
239 * Returns: MH path or NIL if MH disabled
240 */
242 char *mh_path (char *tmp)
243 {
244 char *s,*t,*v,*r;
245 int fd;
246 struct stat sbuf;
247 if (!mh_profile) { /* build mh_profile and mh_pathname now */
248 sprintf (tmp,"%s/%s",myhomedir (),MHPROFILE);
249 if ((fd = open (mh_profile = cpystr (tmp),O_RDONLY,NIL)) >= 0) {
250 fstat (fd,&sbuf); /* yes, get size and read file */
251 read (fd,(t = (char *) fs_get (sbuf.st_size + 1)),sbuf.st_size);
252 close (fd); /* don't need the file any more */
253 t[sbuf.st_size] = '\0'; /* tie it off */
254 /* parse profile file */
255 for (s = strtok_r (t,"\r\n",&r); s && *s; s = strtok_r (NIL,"\r\n",&r)) {
256 /* found space in line? */
257 if (v = strpbrk (s," \t")) {
258 *v++ = '\0'; /* tie off, is keyword "Path:"? */
259 if (!compare_cstring (s,"Path:")) {
260 /* skip whitespace */
261 while ((*v == ' ') || (*v == '\t')) ++v;
262 /* absolute path? */
263 if (*v == '/') s = v;
264 else sprintf (s = tmp,"%s/%s",myhomedir (),v);
265 /* copy name */
266 mh_pathname = cpystr (s);
267 break; /* don't need to look at rest of file */
268 }
269 }
270 }
271 fs_give ((void **) &t); /* flush profile text */
272 if (!mh_pathname) { /* default path if not in the profile */
273 sprintf (tmp,"%s/%s",myhomedir (),MHPATH);
274 mh_pathname = cpystr (tmp);
275 }
276 }
277 }
278 return mh_pathname;
279 }
281 /* MH manipulate driver parameters
282 * Accepts: function code
283 * function-dependent value
284 * Returns: function-dependent return value
285 */
287 void *mh_parameters (long function,void *value)
288 {
289 void *ret = NIL;
290 switch ((int) function) {
291 case GET_INBOXPATH:
292 if (value) ret = mh_file ((char *) value,"INBOX");
293 break;
294 case GET_DIRFMTTEST:
295 ret = (void *) mh_dirfmttest;
296 break;
297 case SET_MHPROFILE:
298 if (mh_profile) fs_give ((void **) &mh_profile);
299 mh_profile = cpystr ((char *) value);
300 case GET_MHPROFILE:
301 ret = (void *) mh_profile;
302 break;
303 case SET_MHPATH:
304 if (mh_pathname) fs_give ((void **) &mh_pathname);
305 mh_pathname = cpystr ((char *) value);
306 case GET_MHPATH:
307 ret = (void *) mh_pathname;
308 break;
309 case SET_MHALLOWINBOX:
310 mh_allow_inbox = value ? T : NIL;
311 case GET_MHALLOWINBOX:
312 ret = (void *) (mh_allow_inbox ? VOIDT : NIL);
313 }
314 return ret;
315 }
318 /* MH test for directory format internal node
319 * Accepts: candidate node name
320 * Returns: T if internal name, NIL otherwise
321 */
323 long mh_dirfmttest (char *s)
324 {
325 int c;
326 /* sequence(s) file is an internal name */
327 if (strcmp (s,MHSEQUENCE) && strcmp (s,MHSEQUENCES)) {
328 if (*s == MHCOMMA) ++s; /* else comma + all numeric name */
329 /* success if all-numeric */
330 while (c = *s++) if (!isdigit (c)) return NIL;
331 }
332 return LONGT;
333 }
335 /* MH scan mailboxes
336 * Accepts: mail stream
337 * reference
338 * pattern to search
339 * string to scan
340 */
342 void mh_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
343 {
344 char *s,test[MAILTMPLEN],file[MAILTMPLEN];
345 long i = 0;
346 if (!pat || !*pat) { /* empty pattern? */
347 if (mh_canonicalize (test,ref,"*")) {
348 /* tie off name at root */
349 if (s = strchr (test,'/')) *++s = '\0';
350 else test[0] = '\0';
351 mm_list (stream,'/',test,LATT_NOSELECT);
352 }
353 }
354 /* get canonical form of name */
355 else if (mh_canonicalize (test,ref,pat)) {
356 if (contents) { /* maybe I'll implement this someday */
357 mm_log ("Scan not valid for mh mailboxes",ERROR);
358 return;
359 }
360 if (test[3] == '/') { /* looking down levels? */
361 /* yes, found any wildcards? */
362 if (s = strpbrk (test,"%*")) {
363 /* yes, copy name up to that point */
364 strncpy (file,test+4,i = s - (test+4));
365 file[i] = '\0'; /* tie off */
366 }
367 else strcpy (file,test+4);/* use just that name then */
368 /* find directory name */
369 if (s = strrchr (file,'/')) {
370 *s = '\0'; /* found, tie off at that point */
371 s = file;
372 }
373 /* do the work */
374 mh_list_work (stream,s,test,0);
375 }
376 /* always an INBOX */
377 if (!compare_cstring (test,MHINBOX))
378 mm_list (stream,NIL,MHINBOX,LATT_NOINFERIORS);
379 }
380 }
382 /* MH list mailboxes
383 * Accepts: mail stream
384 * reference
385 * pattern to search
386 */
388 void mh_list (MAILSTREAM *stream,char *ref,char *pat)
389 {
390 mh_scan (stream,ref,pat,NIL);
391 }
394 /* MH list subscribed mailboxes
395 * Accepts: mail stream
396 * reference
397 * pattern to search
398 */
400 void mh_lsub (MAILSTREAM *stream,char *ref,char *pat)
401 {
402 void *sdb = NIL;
403 char *s,test[MAILTMPLEN];
404 /* get canonical form of name */
405 if (mh_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) {
406 do if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,NIL);
407 while (s = sm_read (&sdb)); /* until no more subscriptions */
408 }
409 }
411 /* MH list mailboxes worker routine
412 * Accepts: mail stream
413 * directory name to search
414 * search pattern
415 * search level
416 */
418 void mh_list_work (MAILSTREAM *stream,char *dir,char *pat,long level)
419 {
420 DIR *dp;
421 struct direct *d;
422 struct stat sbuf;
423 char *cp,*np,curdir[MAILTMPLEN],name[MAILTMPLEN];
424 /* build MH name to search */
425 if (dir) sprintf (name,"#mh/%s/",dir);
426 else strcpy (name,"#mh/");
427 /* make directory name, punt if bogus */
428 if (!mh_file (curdir,name)) return;
429 cp = curdir + strlen (curdir);/* end of directory name */
430 np = name + strlen (name); /* end of MH name */
431 if (dp = opendir (curdir)) { /* open directory */
432 while (d = readdir (dp)) /* scan, ignore . and numeric names */
433 if ((d->d_name[0] != '.') && !mh_select (d)) {
434 strcpy (cp,d->d_name); /* make directory name */
435 if (!stat (curdir,&sbuf) && ((sbuf.st_mode & S_IFMT) == S_IFDIR)) {
436 strcpy (np,d->d_name);/* make mh name of directory name */
437 /* yes, an MH name if full match */
438 if (pmatch_full (name,pat,'/')) mm_list (stream,'/',name,NIL);
439 /* check if should recurse */
440 if (dmatch (name,pat,'/') &&
441 (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL)))
442 mh_list_work (stream,name+4,pat,level+1);
443 }
444 }
445 closedir (dp); /* all done, flush directory */
446 }
447 }
449 /* MH mail subscribe to mailbox
450 * Accepts: mail stream
451 * mailbox to add to subscription list
452 * Returns: T on success, NIL on failure
453 */
455 long mh_subscribe (MAILSTREAM *stream,char *mailbox)
456 {
457 return sm_subscribe (mailbox);
458 }
461 /* MH mail unsubscribe to mailbox
462 * Accepts: mail stream
463 * mailbox to delete from subscription list
464 * Returns: T on success, NIL on failure
465 */
467 long mh_unsubscribe (MAILSTREAM *stream,char *mailbox)
468 {
469 return sm_unsubscribe (mailbox);
470 }
472 /* MH mail create mailbox
473 * Accepts: mail stream
474 * mailbox name to create
475 * Returns: T on success, NIL on failure
476 */
478 long mh_create (MAILSTREAM *stream,char *mailbox)
479 {
480 char tmp[MAILTMPLEN];
481 if (!mh_namevalid (mailbox)) /* validate name */
482 sprintf (tmp,"Can't create mailbox %.80s: invalid MH-format name",mailbox);
483 /* must not already exist */
484 else if (mh_isvalid (mailbox,tmp,NIL))
485 sprintf (tmp,"Can't create mailbox %.80s: mailbox already exists",mailbox);
486 else if (!mh_path (tmp)) return NIL;
487 /* try to make it */
488 else if (!(mh_file (tmp,mailbox) &&
489 dummy_create_path (stream,strcat (tmp,"/"),
490 get_dir_protection (mailbox))))
491 sprintf (tmp,"Can't create mailbox %.80s: %s",mailbox,strerror (errno));
492 else return LONGT; /* success */
493 mm_log (tmp,ERROR);
494 return NIL;
495 }
497 /* MH mail delete mailbox
498 * mailbox name to delete
499 * Returns: T on success, NIL on failure
500 */
502 long mh_delete (MAILSTREAM *stream,char *mailbox)
503 {
504 DIR *dirp;
505 struct direct *d;
506 int i;
507 char tmp[MAILTMPLEN];
508 /* is mailbox valid? */
509 if (!mh_isvalid (mailbox,tmp,NIL)) {
510 sprintf (tmp,"Can't delete mailbox %.80s: no such mailbox",mailbox);
511 mm_log (tmp,ERROR);
512 return NIL;
513 }
514 /* get name of directory */
515 i = strlen (mh_file (tmp,mailbox));
516 if (dirp = opendir (tmp)) { /* open directory */
517 tmp[i++] = '/'; /* now apply trailing delimiter */
518 /* massacre all mh owned files */
519 while (d = readdir (dirp)) if (mh_dirfmttest (d->d_name)) {
520 strcpy (tmp + i,d->d_name);
521 unlink (tmp); /* sayonara */
522 }
523 closedir (dirp); /* flush directory */
524 }
525 /* try to remove the directory */
526 if (rmdir (mh_file (tmp,mailbox))) {
527 sprintf (tmp,"Can't delete mailbox %.80s: %s",mailbox,strerror (errno));
528 mm_log (tmp,WARN);
529 }
530 return T; /* return success */
531 }
533 /* MH mail rename mailbox
534 * Accepts: MH mail stream
535 * old mailbox name
536 * new mailbox name
537 * Returns: T on success, NIL on failure
538 */
540 long mh_rename (MAILSTREAM *stream,char *old,char *newname)
541 {
542 char c,*s,tmp[MAILTMPLEN],tmp1[MAILTMPLEN];
543 struct stat sbuf;
544 /* old mailbox name must be valid */
545 if (!mh_isvalid (old,tmp,NIL))
546 sprintf (tmp,"Can't rename mailbox %.80s: no such mailbox",old);
547 else if (!mh_namevalid (newname))
548 sprintf (tmp,"Can't rename to mailbox %.80s: invalid MH-format name",
549 newname);
550 /* new mailbox name must not be valid */
551 else if (mh_isvalid (newname,tmp,NIL))
552 sprintf (tmp,"Can't rename to mailbox %.80s: destination already exists",
553 newname);
554 /* success if can rename the directory */
555 else { /* found superior to destination name? */
556 if (s = strrchr (mh_file (tmp1,newname),'/')) {
557 c = *++s; /* remember first character of inferior */
558 *s = '\0'; /* tie off to get just superior */
559 /* name doesn't exist, create it */
560 if ((stat (tmp1,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
561 !dummy_create_path (stream,tmp1,get_dir_protection (newname)))
562 return NIL;
563 *s = c; /* restore full name */
564 }
565 if (!rename (mh_file (tmp,old),tmp1)) return T;
566 sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",
567 old,newname,strerror (errno));
568 }
569 mm_log (tmp,ERROR); /* something failed */
570 return NIL;
571 }
573 /* MH mail open
574 * Accepts: stream to open
575 * Returns: stream on success, NIL on failure
576 */
578 MAILSTREAM *mh_open (MAILSTREAM *stream)
579 {
580 char tmp[MAILTMPLEN];
581 if (!stream) return &mhproto; /* return prototype for OP_PROTOTYPE call */
582 if (stream->local) fatal ("mh recycle stream");
583 stream->local = fs_get (sizeof (MHLOCAL));
584 /* INBOXness is one of the following:
585 * #mhinbox (case-independent)
586 * #mh/inbox (mh is case-independent, inbox is case-dependent)
587 * INBOX (case-independent
588 */
589 stream->inbox = /* note if an INBOX or not */
590 (!compare_cstring (stream->mailbox,MHINBOX) ||
591 ((stream->mailbox[0] == '#') &&
592 ((stream->mailbox[1] == 'm') || (stream->mailbox[1] == 'M')) &&
593 ((stream->mailbox[2] == 'h') || (stream->mailbox[2] == 'H')) &&
594 (stream->mailbox[3] == '/') && !strcmp (stream->mailbox+4,MHINBOXDIR)) ||
595 !compare_cstring (stream->mailbox,"INBOX")) ? T : NIL;
596 mh_file (tmp,stream->mailbox);/* get directory name */
597 LOCAL->dir = cpystr (tmp); /* copy directory name for later */
598 LOCAL->scantime = 0; /* not scanned yet */
599 LOCAL->cachedtexts = 0; /* no cached texts */
600 stream->sequence++; /* bump sequence number */
601 /* parse mailbox */
602 stream->nmsgs = stream->recent = 0;
603 if (!mh_ping (stream)) return NIL;
604 if (!(stream->nmsgs || stream->silent))
605 mm_log ("Mailbox is empty",(long) NIL);
606 return stream; /* return stream to caller */
607 }
609 /* MH mail close
610 * Accepts: MAIL stream
611 * close options
612 */
614 void mh_close (MAILSTREAM *stream,long options)
615 {
616 if (LOCAL) { /* only if a file is open */
617 int silent = stream->silent;
618 stream->silent = T; /* note this stream is dying */
619 if (options & CL_EXPUNGE) mh_expunge (stream,NIL,NIL);
620 if (LOCAL->dir) fs_give ((void **) &LOCAL->dir);
621 /* nuke the local data */
622 fs_give ((void **) &stream->local);
623 stream->dtb = NIL; /* log out the DTB */
624 stream->silent = silent; /* reset silent state */
625 }
626 }
629 /* MH mail fetch fast information
630 * Accepts: MAIL stream
631 * sequence
632 * option flags
633 */
635 void mh_fast (MAILSTREAM *stream,char *sequence,long flags)
636 {
637 MESSAGECACHE *elt;
638 unsigned long i;
639 /* set up metadata for all messages */
640 if (stream && LOCAL && ((flags & FT_UID) ?
641 mail_uid_sequence (stream,sequence) :
642 mail_sequence (stream,sequence)))
643 for (i = 1; i <= stream->nmsgs; i++)
644 if ((elt = mail_elt (stream,i))->sequence &&
645 !(elt->day && elt->rfc822_size)) mh_load_message (stream,i,NIL);
646 }
648 /* MH load message into cache
649 * Accepts: MAIL stream
650 * message #
651 * option flags
652 */
654 void mh_load_message (MAILSTREAM *stream,unsigned long msgno,long flags)
655 {
656 unsigned long i,j,nlseen;
657 int fd;
658 unsigned char c,*t;
659 struct stat sbuf;
660 MESSAGECACHE *elt;
661 FDDATA d;
662 STRING bs;
663 elt = mail_elt (stream,msgno);/* get elt */
664 /* build message file name */
665 sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
666 /* anything we need not currently cached? */
667 if ((!elt->day || !elt->rfc822_size ||
668 ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
669 ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) &&
670 ((fd = open (LOCAL->buf,O_RDONLY,NIL)) >= 0)) {
671 fstat (fd,&sbuf); /* get file metadata */
672 d.fd = fd; /* set up file descriptor */
673 d.pos = 0; /* start of file */
674 d.chunk = LOCAL->buf;
675 d.chunksize = CHUNKSIZE;
676 INIT (&bs,fd_string,&d,sbuf.st_size);
677 if (!elt->day) { /* set internaldate to file date */
678 struct tm *tm = gmtime (&sbuf.st_mtime);
679 elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
680 elt->year = tm->tm_year + 1900 - BASEYEAR;
681 elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
682 elt->seconds = tm->tm_sec;
683 elt->zhours = 0; elt->zminutes = 0;
684 }
686 if (!elt->rfc822_size) { /* know message size yet? */
687 for (i = 0, j = SIZE (&bs), nlseen = 0; j--; ) switch (SNX (&bs)) {
688 case '\015': /* unlikely carriage return */
689 if (!j || (CHR (&bs) != '\012')) {
690 i++; /* ugh, raw CR */
691 nlseen = NIL;
692 break;
693 }
694 SNX (&bs); /* eat the line feed, drop in */
695 --j;
696 case '\012': /* line feed? */
697 i += 2; /* count a CRLF */
698 /* header size known yet? */
699 if (!elt->private.msg.header.text.size && nlseen) {
700 /* note position in file */
701 elt->private.special.text.size = GETPOS (&bs);
702 /* and CRLF-adjusted size */
703 elt->private.msg.header.text.size = i;
704 }
705 nlseen = T; /* note newline seen */
706 break;
707 default: /* ordinary chararacter */
708 i++;
709 nlseen = NIL;
710 break;
711 }
712 SETPOS (&bs,0); /* restore old position */
713 elt->rfc822_size = i; /* note that we have size now */
714 /* header is entire message if no delimiter */
715 if (!elt->private.msg.header.text.size)
716 elt->private.msg.header.text.size = elt->rfc822_size;
717 /* text is remainder of message */
718 elt->private.msg.text.text.size =
719 elt->rfc822_size - elt->private.msg.header.text.size;
720 }
721 /* need to load cache with message data? */
722 if (((flags & MLM_HEADER) && !elt->private.msg.header.text.data) ||
723 ((flags & MLM_TEXT) && !elt->private.msg.text.text.data)) {
724 /* purge cache if too big */
725 if (LOCAL->cachedtexts > max (stream->nmsgs * 4096,2097152)) {
726 /* just can't keep that much */
727 mail_gc (stream,GC_TEXTS);
728 LOCAL->cachedtexts = 0;
729 }
731 if ((flags & MLM_HEADER) && !elt->private.msg.header.text.data) {
732 t = elt->private.msg.header.text.data =
733 (unsigned char *) fs_get (elt->private.msg.header.text.size + 1);
734 LOCAL->cachedtexts += elt->private.msg.header.text.size;
735 /* read in message header */
736 for (i = 0; i < elt->private.msg.header.text.size; i++)
737 switch (c = SNX (&bs)) {
738 case '\015': /* unlikely carriage return */
739 *t++ = c;
740 if ((CHR (&bs) == '\012')) {
741 *t++ = SNX (&bs);
742 i++;
743 }
744 break;
745 case '\012': /* line feed? */
746 *t++ = '\015';
747 i++;
748 default:
749 *t++ = c;
750 break;
751 }
752 *t = '\0'; /* tie off string */
753 if ((t - elt->private.msg.header.text.data) !=
754 elt->private.msg.header.text.size) fatal ("mh hdr size mismatch");
755 }
756 if ((flags & MLM_TEXT) && !elt->private.msg.text.text.data) {
757 t = elt->private.msg.text.text.data =
758 (unsigned char *) fs_get (elt->private.msg.text.text.size + 1);
759 SETPOS (&bs,elt->private.special.text.size);
760 LOCAL->cachedtexts += elt->private.msg.text.text.size;
761 /* read in message text */
762 for (i = 0; i < elt->private.msg.text.text.size; i++)
763 switch (c = SNX (&bs)) {
764 case '\015': /* unlikely carriage return */
765 *t++ = c;
766 if ((CHR (&bs) == '\012')) {
767 *t++ = SNX (&bs);
768 i++;
769 }
770 break;
771 case '\012': /* line feed? */
772 *t++ = '\015';
773 i++;
774 default:
775 *t++ = c;
776 break;
777 }
778 *t = '\0'; /* tie off string */
779 if ((t - elt->private.msg.text.text.data) !=
780 elt->private.msg.text.text.size) fatal ("mh txt size mismatch");
781 }
782 }
783 close (fd); /* flush message file */
784 }
785 }
787 /* MH mail fetch message header
788 * Accepts: MAIL stream
789 * message # to fetch
790 * pointer to returned header text length
791 * option flags
792 * Returns: message header in RFC822 format
793 */
795 char *mh_header (MAILSTREAM *stream,unsigned long msgno,unsigned long *length,
796 long flags)
797 {
798 MESSAGECACHE *elt;
799 *length = 0; /* default to empty */
800 if (flags & FT_UID) return "";/* UID call "impossible" */
801 elt = mail_elt (stream,msgno);/* get elt */
802 if (!elt->private.msg.header.text.data)
803 mh_load_message (stream,msgno,MLM_HEADER);
804 *length = elt->private.msg.header.text.size;
805 return (char *) elt->private.msg.header.text.data;
806 }
809 /* MH mail fetch message text (body only)
810 * Accepts: MAIL stream
811 * message # to fetch
812 * pointer to returned stringstruct
813 * option flags
814 * Returns: T on success, NIL on failure
815 */
817 long mh_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
818 {
819 MESSAGECACHE *elt;
820 /* UID call "impossible" */
821 if (flags & FT_UID) return NIL;
822 elt = mail_elt (stream,msgno);/* get elt */
823 /* snarf message if don't have it yet */
824 if (!elt->private.msg.text.text.data) {
825 mh_load_message (stream,msgno,MLM_TEXT);
826 if (!elt->private.msg.text.text.data) return NIL;
827 }
828 if (!(flags & FT_PEEK)) { /* mark as seen */
829 mail_elt (stream,msgno)->seen = T;
830 mm_flags (stream,msgno);
831 }
832 INIT (bs,mail_string,elt->private.msg.text.text.data,
833 elt->private.msg.text.text.size);
834 return T;
835 }
837 /* MH mail ping mailbox
838 * Accepts: MAIL stream
839 * Returns: T if stream alive, else NIL
840 */
842 long mh_ping (MAILSTREAM *stream)
843 {
844 MAILSTREAM *sysibx = NIL;
845 MESSAGECACHE *elt,*selt;
846 struct stat sbuf;
847 char *s,tmp[MAILTMPLEN];
848 int fd;
849 unsigned long i,j,r;
850 unsigned long old = stream->uid_last;
851 long nmsgs = stream->nmsgs;
852 long recent = stream->recent;
853 int silent = stream->silent;
854 if (stat (LOCAL->dir,&sbuf)) {/* directory exists? */
855 if (stream->inbox && /* no, create if INBOX */
856 dummy_create_path (stream,strcat (mh_file (tmp,MHINBOX),"/"),
857 get_dir_protection ("INBOX"))) return T;
858 sprintf (tmp,"Can't open mailbox %.80s: no such mailbox",stream->mailbox);
859 mm_log (tmp,ERROR);
860 return NIL;
861 }
862 stream->silent = T; /* don't pass up mm_exists() events yet */
863 if (sbuf.st_ctime != LOCAL->scantime) {
864 struct direct **names = NIL;
865 long nfiles = scandir (LOCAL->dir,&names,mh_select,mh_numsort);
866 if (nfiles < 0) nfiles = 0; /* in case error */
867 /* note scanned now */
868 LOCAL->scantime = sbuf.st_ctime;
869 /* scan directory */
870 for (i = 0; i < nfiles; ++i) {
871 /* if newly seen, add to list */
872 if ((j = atoi (names[i]->d_name)) > old) {
873 mail_exists (stream,++nmsgs);
874 stream->uid_last = (elt = mail_elt (stream,nmsgs))->private.uid = j;
875 elt->valid = T; /* note valid flags */
876 if (old) { /* other than the first pass? */
877 elt->recent = T; /* yup, mark as recent */
878 recent++; /* bump recent count */
879 }
880 else { /* see if already read */
881 sprintf (tmp,"%s/%s",LOCAL->dir,names[i]->d_name);
882 if (!stat (tmp,&sbuf) && (sbuf.st_atime > sbuf.st_mtime))
883 elt->seen = T;
884 }
885 }
886 fs_give ((void **) &names[i]);
887 }
888 /* free directory */
889 if (s = (void *) names) fs_give ((void **) &s);
890 }
892 /* if INBOX, snarf from system INBOX */
893 if (stream->inbox && strcmp (sysinbox (),stream->mailbox)) {
894 old = stream->uid_last;
895 mm_critical (stream); /* go critical */
896 /* see if anything in system inbox */
897 if (!stat (sysinbox (),&sbuf) && sbuf.st_size &&
898 (sysibx = mail_open (sysibx,sysinbox (),OP_SILENT)) &&
899 !sysibx->rdonly && (r = sysibx->nmsgs)) {
900 for (i = 1; i <= r; ++i) {/* for each message in sysinbox mailbox */
901 /* build file name we will use */
902 sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,++old);
903 /* snarf message from Berkeley mailbox */
904 selt = mail_elt (sysibx,i);
905 if (((fd = open (LOCAL->buf,O_WRONLY|O_CREAT|O_EXCL,
906 (long) mail_parameters (NIL,GET_MBXPROTECTION,NIL)))
907 >= 0) &&
908 (s = mail_fetchheader_full (sysibx,i,NIL,&j,FT_INTERNAL)) &&
909 (write (fd,s,j) == j) &&
910 (s = mail_fetchtext_full (sysibx,i,&j,FT_INTERNAL|FT_PEEK)) &&
911 (write (fd,s,j) == j) && !fsync (fd) && !close (fd)) {
912 /* swell the cache */
913 mail_exists (stream,++nmsgs);
914 stream->uid_last = /* create new elt, note its file number */
915 (elt = mail_elt (stream,nmsgs))->private.uid = old;
916 recent++; /* bump recent count */
917 /* set up initial flags and date */
918 elt->valid = elt->recent = T;
919 elt->seen = selt->seen;
920 elt->deleted = selt->deleted;
921 elt->flagged = selt->flagged;
922 elt->answered = selt->answered;
923 elt->draft = selt->draft;
924 elt->day = selt->day;elt->month = selt->month;elt->year = selt->year;
925 elt->hours = selt->hours;elt->minutes = selt->minutes;
926 elt->seconds = selt->seconds;
927 elt->zhours = selt->zhours; elt->zminutes = selt->zminutes;
928 elt->zoccident = selt->zoccident;
929 mh_setdate (LOCAL->buf,elt);
930 sprintf (tmp,"%lu",i);/* delete it from the sysinbox */
931 mail_flag (sysibx,tmp,"\\Deleted",ST_SET);
932 }
934 else { /* failed to snarf */
935 if (fd) { /* did it ever get opened? */
936 close (fd); /* close descriptor */
937 unlink (LOCAL->buf);/* flush this file */
938 }
939 sprintf (tmp,"Message copy to MH mailbox failed: %.80s",
940 s,strerror (errno));
941 mm_log (tmp,ERROR);
942 r = 0; /* stop the snarf in its tracks */
943 }
944 }
945 /* update scan time */
946 if (!stat (LOCAL->dir,&sbuf)) LOCAL->scantime = sbuf.st_ctime;
947 mail_expunge (sysibx); /* now expunge all those messages */
948 }
949 if (sysibx) mail_close (sysibx);
950 mm_nocritical (stream); /* release critical */
951 }
952 stream->silent = silent; /* can pass up events now */
953 mail_exists (stream,nmsgs); /* notify upper level of mailbox size */
954 mail_recent (stream,recent);
955 return T; /* return that we are alive */
956 }
958 /* MH mail check mailbox
959 * Accepts: MAIL stream
960 */
962 void mh_check (MAILSTREAM *stream)
963 {
964 /* Perhaps in the future this will preserve flags */
965 if (mh_ping (stream)) mm_log ("Check completed",(long) NIL);
966 }
969 /* MH mail expunge mailbox
970 * Accepts: MAIL stream
971 * sequence to expunge if non-NIL
972 * expunge options
973 * Returns: T, always
974 */
976 long mh_expunge (MAILSTREAM *stream,char *sequence,long options)
977 {
978 long ret;
979 MESSAGECACHE *elt;
980 unsigned long i = 1;
981 unsigned long n = 0;
982 unsigned long recent = stream->recent;
983 if (ret = sequence ? ((options & EX_UID) ?
984 mail_uid_sequence (stream,sequence) :
985 mail_sequence (stream,sequence)) : LONGT) {
986 mm_critical (stream); /* go critical */
987 while (i <= stream->nmsgs) {/* for each message */
988 elt = mail_elt (stream,i);/* if deleted, need to trash it */
989 if (elt->deleted && (sequence ? elt->sequence : T)) {
990 sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
991 if (unlink (LOCAL->buf)) {/* try to delete the message */
992 sprintf (LOCAL->buf,"Expunge of message %lu failed, aborted: %s",i,
993 strerror (errno));
994 mm_log (LOCAL->buf,(long) NIL);
995 break;
996 }
997 /* note uncached */
998 LOCAL->cachedtexts -= ((elt->private.msg.header.text.data ?
999 elt->private.msg.header.text.size : 0) +
1000 (elt->private.msg.text.text.data ?
1001 elt->private.msg.text.text.size : 0));
1002 mail_gc_msg (&elt->private.msg,GC_ENV | GC_TEXTS);
1003 /* if recent, note one less recent message */
1004 if (elt->recent) --recent;
1005 /* notify upper levels */
1006 mail_expunged (stream,i);
1007 n++; /* count up one more expunged message */
1008 }
1009 else i++; /* otherwise try next message */
1010 }
1011 if (n) { /* output the news if any expunged */
1012 sprintf (LOCAL->buf,"Expunged %lu messages",n);
1013 mm_log (LOCAL->buf,(long) NIL);
1014 }
1015 else mm_log ("No messages deleted, so no update needed",(long) NIL);
1016 mm_nocritical (stream); /* release critical */
1017 /* notify upper level of new mailbox size */
1018 mail_exists (stream,stream->nmsgs);
1019 mail_recent (stream,recent);
1020 }
1021 return ret;
1022 }
1024 /* MH mail copy message(s)
1025 * Accepts: MAIL stream
1026 * sequence
1027 * destination mailbox
1028 * copy options
1029 * Returns: T if copy successful, else NIL
1030 */
1032 long mh_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
1033 {
1034 FDDATA d;
1035 STRING st;
1036 MESSAGECACHE *elt;
1037 struct stat sbuf;
1038 int fd;
1039 unsigned long i;
1040 char flags[MAILTMPLEN],date[MAILTMPLEN];
1041 appenduid_t au = (appenduid_t) mail_parameters (NIL,GET_APPENDUID,NIL);
1042 long ret = NIL;
1043 /* copy the messages */
1044 if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
1045 mail_sequence (stream,sequence))
1046 for (i = 1; i <= stream->nmsgs; i++)
1047 if ((elt = mail_elt (stream,i))->sequence) {
1048 sprintf (LOCAL->buf,"%s/%lu",LOCAL->dir,elt->private.uid);
1049 if ((fd = open (LOCAL->buf,O_RDONLY,NIL)) < 0) return NIL;
1050 fstat (fd,&sbuf); /* get size of message */
1051 if (!elt->day) { /* set internaldate to file date if needed */
1052 struct tm *tm = gmtime (&sbuf.st_mtime);
1053 elt->day = tm->tm_mday; elt->month = tm->tm_mon + 1;
1054 elt->year = tm->tm_year + 1900 - BASEYEAR;
1055 elt->hours = tm->tm_hour; elt->minutes = tm->tm_min;
1056 elt->seconds = tm->tm_sec;
1057 elt->zhours = 0; elt->zminutes = 0;
1058 }
1059 d.fd = fd; /* set up file descriptor */
1060 d.pos = 0; /* start of file */
1061 d.chunk = LOCAL->buf;
1062 d.chunksize = CHUNKSIZE;
1063 /* kludge; mh_append would just strip CRs */
1064 INIT (&st,fd_string,&d,sbuf.st_size);
1065 /* init flag string */
1066 flags[0] = flags[1] = '\0';
1067 if (elt->seen) strcat (flags," \\Seen");
1068 if (elt->deleted) strcat (flags," \\Deleted");
1069 if (elt->flagged) strcat (flags," \\Flagged");
1070 if (elt->answered) strcat (flags," \\Answered");
1071 if (elt->draft) strcat (flags," \\Draft");
1072 flags[0] = '('; /* open list */
1073 strcat (flags,")"); /* close list */
1074 mail_date (date,elt); /* generate internal date */
1075 if (au) mail_parameters (NIL,SET_APPENDUID,NIL);
1076 if ((ret = mail_append_full (NIL,mailbox,flags,date,&st)) &&
1077 (options & CP_MOVE)) elt->deleted = T;
1078 if (au) mail_parameters (NIL,SET_APPENDUID,(void *) au);
1079 close (fd);
1080 }
1081 if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
1082 mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
1083 return ret; /* return success */
1084 }
1086 /* MH mail append message from stringstruct
1087 * Accepts: MAIL stream
1088 * destination mailbox
1089 * append callback
1090 * data for callback
1091 * Returns: T if append successful, else NIL
1092 */
1094 long mh_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
1095 {
1096 struct direct **names = NIL;
1097 int fd;
1098 char c,*flags,*date,*s,tmp[MAILTMPLEN];
1099 STRING *message;
1100 MESSAGECACHE elt;
1101 FILE *df;
1102 long i,size,last,nfiles;
1103 long ret = LONGT;
1104 /* default stream to prototype */
1105 if (!stream) stream = &mhproto;
1106 /* make sure valid mailbox */
1107 if (!mh_isvalid (mailbox,tmp,NIL)) switch (errno) {
1108 case ENOENT: /* no such file? */
1109 if (!((!compare_cstring (mailbox,MHINBOX) ||
1110 !compare_cstring (mailbox,"INBOX")) &&
1111 (mh_file (tmp,MHINBOX) &&
1112 dummy_create_path (stream,strcat (tmp,"/"),
1113 get_dir_protection (mailbox))))) {
1114 mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
1115 return NIL;
1116 }
1117 /* falls through */
1118 case 0: /* merely empty file? */
1119 break;
1120 case EINVAL:
1121 sprintf (tmp,"Invalid MH-format mailbox name: %.80s",mailbox);
1122 mm_log (tmp,ERROR);
1123 return NIL;
1124 default:
1125 sprintf (tmp,"Not a MH-format mailbox: %.80s",mailbox);
1126 mm_log (tmp,ERROR);
1127 return NIL;
1128 }
1129 /* get first message */
1130 if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
1131 if ((nfiles = scandir (tmp,&names,mh_select,mh_numsort)) > 0) {
1132 /* largest number */
1133 last = atoi (names[nfiles-1]->d_name);
1134 for (i = 0; i < nfiles; ++i) /* free directory */
1135 fs_give ((void **) &names[i]);
1136 }
1137 else last = 0; /* no messages here yet */
1138 if (s = (void *) names) fs_give ((void **) &s);
1140 mm_critical (stream); /* go critical */
1141 do {
1142 if (!SIZE (message)) { /* guard against zero-length */
1143 mm_log ("Append of zero-length message",ERROR);
1144 ret = NIL;
1145 break;
1146 }
1147 if (date) { /* want to preserve date? */
1148 /* yes, parse date into an elt */
1149 if (!mail_parse_date (&elt,date)) {
1150 sprintf (tmp,"Bad date in append: %.80s",date);
1151 mm_log (tmp,ERROR);
1152 ret = NIL;
1153 break;
1154 }
1155 }
1156 mh_file (tmp,mailbox); /* build file name we will use */
1157 sprintf (tmp + strlen (tmp),"/%ld",++last);
1158 if (((fd = open (tmp,O_WRONLY|O_CREAT|O_EXCL,
1159 (long)mail_parameters (NIL,GET_MBXPROTECTION,NIL))) < 0)||
1160 !(df = fdopen (fd,"ab"))) {
1161 sprintf (tmp,"Can't open append message: %s",strerror (errno));
1162 mm_log (tmp,ERROR);
1163 ret = NIL;
1164 break;
1165 }
1166 /* copy the data w/o CR's */
1167 for (size = 0,i = SIZE (message); i && ret; --i)
1168 if (((c = SNX (message)) != '\015') && (putc (c,df) == EOF)) ret = NIL;
1169 /* close the file */
1170 if (!ret || fclose (df)) {
1171 unlink (tmp); /* delete message */
1172 sprintf (tmp,"Message append failed: %s",strerror (errno));
1173 mm_log (tmp,ERROR);
1174 ret = NIL;
1175 }
1176 if (ret) { /* set the date for this message */
1177 if (date) mh_setdate (tmp,&elt);
1178 /* get next message */
1179 if (!(*af) (stream,data,&flags,&date,&message)) ret = NIL;
1180 }
1181 } while (ret && message);
1182 mm_nocritical (stream); /* release critical */
1183 if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
1184 mm_log ("Can not return meaningful APPENDUID with this mailbox format",
1185 WARN);
1186 return ret;
1187 }
1189 /* Internal routines */
1192 /* MH file name selection test
1193 * Accepts: candidate directory entry
1194 * Returns: T to use file name, NIL to skip it
1195 */
1197 int mh_select (struct direct *name)
1198 {
1199 char c;
1200 char *s = name->d_name;
1201 while (c = *s++) if (!isdigit (c)) return NIL;
1202 return T;
1203 }
1206 /* MH file name comparision
1207 * Accepts: first candidate directory entry
1208 * second candidate directory entry
1209 * Returns: negative if d1 < d2, 0 if d1 == d2, postive if d1 > d2
1210 */
1212 int mh_numsort (const void *d1,const void *d2)
1213 {
1214 return atoi ((*(struct direct **) d1)->d_name) -
1215 atoi ((*(struct direct **) d2)->d_name);
1216 }
1219 /* MH mail build file name
1220 * Accepts: destination string
1221 * source
1222 * Returns: destination
1223 */
1225 char *mh_file (char *dst,char *name)
1226 {
1227 char *s;
1228 char *path = mh_path (dst);
1229 if (!path) fatal ("No mh path in mh_file()!");
1230 /* INBOX becomes "inbox" in the MH path */
1231 if (!compare_cstring (name,MHINBOX) || !compare_cstring (name,"INBOX"))
1232 sprintf (dst,"%.900s/%.80s",path,MHINBOXDIR);
1233 /* #mh names skip past prefix */
1234 else if (*name == '#') sprintf (dst,"%.100s/%.900s",path,name + 4);
1235 else mailboxfile (dst,name); /* all other names */
1236 /* tie off unnecessary trailing / */
1237 if ((s = strrchr (dst,'/')) && !s[1] && (s[-1] == '/')) *s = '\0';
1238 return dst;
1239 }
1241 /* MH canonicalize name
1242 * Accepts: buffer to write name
1243 * reference
1244 * pattern
1245 * Returns: T if success, NIL if failure
1246 */
1248 long mh_canonicalize (char *pattern,char *ref,char *pat)
1249 {
1250 unsigned long i;
1251 char *s,tmp[MAILTMPLEN];
1252 if (ref && *ref) { /* have a reference */
1253 strcpy (pattern,ref); /* copy reference to pattern */
1254 /* # overrides mailbox field in reference */
1255 if (*pat == '#') strcpy (pattern,pat);
1256 /* pattern starts, reference ends, with / */
1257 else if ((*pat == '/') && (pattern[strlen (pattern) - 1] == '/'))
1258 strcat (pattern,pat + 1); /* append, omitting one of the period */
1259 else strcat (pattern,pat); /* anything else is just appended */
1260 }
1261 else strcpy (pattern,pat); /* just have basic name */
1262 if (mh_isvalid (pattern,tmp,T)) {
1263 /* count wildcards */
1264 for (i = 0, s = pattern; *s; *s++) if ((*s == '*') || (*s == '%')) ++i;
1265 /* success if not too many */
1266 if (i <= MAXWILDCARDS) return LONGT;
1267 mm_log ("Excessive wildcards in LIST/LSUB",ERROR);
1268 }
1269 return NIL;
1270 }
1272 /* Set date for message
1273 * Accepts: file name
1274 * elt containing date
1275 */
1277 void mh_setdate (char *file,MESSAGECACHE *elt)
1278 {
1279 time_t tp[2];
1280 tp[0] = time (0); /* atime is now */
1281 tp[1] = mail_longdate (elt); /* modification time */
1282 utime (file,tp); /* set the times */
1283 }