2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)fio.c 8.2 (Berkeley) 4/20/95
30 * $FreeBSD: src/usr.bin/mail/fio.c,v 1.2.6.4 2003/01/06 05:46:03 mikeh Exp $
31 * $DragonFly: src/usr.bin/mail/fio.c,v 1.4 2004/09/08 03:01:11 joerg Exp $
44 * Mail -- a mail program
49 extern int wait_status
;
52 * Set up the input pointers while copying the mail file into /tmp.
55 setptr(FILE *ibuf
, off_t offset
)
62 char linebuf
[LINESIZE
], pathbuf
[PATHSIZE
];
65 /* Get temporary file. */
66 snprintf(pathbuf
, sizeof(pathbuf
), "%s/mail.XXXXXXXXXX", tmpdir
);
67 if ((c
= mkstemp(pathbuf
)) == -1 || (mestmp
= Fdopen(c
, "r+")) == NULL
)
68 err(1, "can't open %s", pathbuf
);
74 /* Seek into the file to get to the new messages */
75 fseeko(ibuf
, offset
, SEEK_SET
);
77 * We need to make "offset" a pointer to the end of
78 * the temp file that has the copy of the mail file.
79 * If any messages have been edited, this will be
80 * different from the offset into the mail file.
82 fseeko(otf
, (off_t
)0, SEEK_END
);
88 this.m_flag
= MUSED
|MNEW
;
94 if (fgets(linebuf
, sizeof(linebuf
), ibuf
) == NULL
) {
95 if (append(&this, mestmp
))
96 errx(1, "temporary file");
97 makemessage(mestmp
, omsgCount
);
100 count
= strlen(linebuf
);
102 * Transforms lines ending in <CR><LF> to just <LF>.
103 * This allows mail to be able to read Eudora mailboxes.
105 if (count
>= 2 && linebuf
[count
- 1] == '\n' &&
106 linebuf
[count
- 2] == '\r') {
108 linebuf
[count
- 1] = '\n';
111 fwrite(linebuf
, sizeof(*linebuf
), count
, otf
);
115 linebuf
[count
- 1] = '\0';
116 if (maybe
&& linebuf
[0] == 'F' && ishead(linebuf
)) {
118 if (append(&this, mestmp
))
119 errx(1, "temporary file");
120 this.m_flag
= MUSED
|MNEW
;
123 this.m_block
= blockof(offset
);
124 this.m_offset
= boffsetof(offset
);
126 } else if (linebuf
[0] == 0) {
129 for (cp
= linebuf
, cp2
= "status";; cp
++) {
130 if ((c
= *cp2
++) == '\0') {
131 while (isspace((unsigned char)*cp
++))
135 while ((c
= *cp
++) != '\0')
137 this.m_flag
|= MREAD
;
139 this.m_flag
&= ~MNEW
;
143 if (*cp
!= c
&& *cp
!= toupper((unsigned char)c
))
148 this.m_size
+= count
;
150 maybe
= linebuf
[0] == 0;
155 * Drop the passed line onto the passed output buffer.
156 * If a write error occurs, return -1, else the count of
157 * characters written, including the newline if requested.
160 putline(FILE *obuf
, char *linebuf
, int outlf
)
165 fwrite(linebuf
, sizeof(*linebuf
), c
, obuf
);
176 * Read up a line from the specified input into the line
177 * buffer. Return the number of characters read. Do not
178 * include the newline (or carriage return) at the end.
181 readline(FILE *ibuf
, char *linebuf
, int linesize
)
186 if (fgets(linebuf
, linesize
, ibuf
) == NULL
)
189 if (n
> 0 && linebuf
[n
- 1] == '\n')
191 if (n
> 0 && linebuf
[n
- 1] == '\r')
197 * Return a file buffer all ready to read up the
198 * passed message pointer.
201 setinput(struct message
*mp
)
205 positionof(mp
->m_block
, mp
->m_offset
), SEEK_SET
) < 0)
211 * Take the data out of the passed ghost file and toss it into
212 * a dynamically allocated message structure.
215 makemessage(FILE *f
, int omsgCount
)
218 struct message
*nmessage
;
220 size
= (msgCount
+ 1) * sizeof(struct message
);
221 nmessage
= (struct message
*)realloc(message
, size
);
222 if (nmessage
== NULL
)
223 errx(1, "Insufficient memory for %d messages\n",
225 if (omsgCount
== 0 || message
== NULL
)
228 dot
= nmessage
+ (dot
- message
);
230 size
-= (omsgCount
+ 1) * sizeof(struct message
);
232 lseek(fileno(f
), (off_t
)sizeof(*message
), 0);
233 if (read(fileno(f
), (char *)&message
[omsgCount
], size
) != size
)
234 errx(1, "Message temporary file corrupted");
235 message
[msgCount
].m_size
= 0;
236 message
[msgCount
].m_lines
= 0;
241 * Append the passed message descriptor onto the temp file.
242 * If the write fails, return 1, else 0
245 append(struct message
*mp
, FILE *f
)
247 return (fwrite((char *)mp
, sizeof(*mp
), 1, f
) != 1);
251 * Delete a file, but only if the file is a plain file.
258 if (stat(name
, &sb
) < 0)
260 if (!S_ISREG(sb
.st_mode
)) {
264 return (unlink(name
));
267 static int sigdepth
; /* depth of holdsigs() */
268 static sigset_t nset
, oset
;
270 * Hold signals SIGHUP, SIGINT, and SIGQUIT.
275 if (sigdepth
++ == 0) {
277 sigaddset(&nset
, SIGHUP
);
278 sigaddset(&nset
, SIGINT
);
279 sigaddset(&nset
, SIGQUIT
);
280 sigprocmask(SIG_BLOCK
, &nset
, &oset
);
285 * Release signals SIGHUP, SIGINT, and SIGQUIT.
291 sigprocmask(SIG_SETMASK
, &oset
, NULL
);
295 * Determine the size of the file possessed by
303 if (fstat(fileno(iob
), &sbuf
) < 0)
305 return (sbuf
.st_size
);
309 * Evaluate the string given as a new mailbox name.
310 * Supported meta characters:
311 * % for my system mail box
312 * %user for user's system mail box
313 * # for previous file
314 * & invoker's mbox file
315 * +file file in folder directory
316 * any shell meta character
317 * Return the file name as a dynamic string.
322 char xname
[PATHSIZE
];
323 char cmdbuf
[PATHSIZE
]; /* also used for file names */
330 * The order of evaluation is "%" and "#" expand into constants.
331 * "&" can expand into "+". "+" can expand into shell meta characters.
332 * Shell meta characters expand into constants.
333 * This way, we make no recursive expansion.
337 findmail(name
[1] ? name
+ 1 : myname
, xname
, sizeof(xname
));
338 return (savestr(xname
));
342 if (prevfile
[0] == 0) {
343 printf("No previous file\n");
346 return (savestr(prevfile
));
348 if (name
[1] == 0 && (name
= value("MBOX")) == NULL
)
352 if (name
[0] == '+' && getfold(cmdbuf
, sizeof(cmdbuf
)) >= 0) {
353 snprintf(xname
, sizeof(xname
), "%s/%s", cmdbuf
, name
+ 1);
354 name
= savestr(xname
);
356 /* catch the most common shell meta character */
357 if (name
[0] == '~' && homedir
!= NULL
&&
358 (name
[1] == '/' || name
[1] == '\0')) {
359 snprintf(xname
, sizeof(xname
), "%s%s", homedir
, name
+ 1);
360 name
= savestr(xname
);
362 if (!strpbrk(name
, "~{[*?$`'\"\\"))
364 if (pipe(pivec
) < 0) {
368 snprintf(cmdbuf
, sizeof(cmdbuf
), "echo %s", name
);
369 if ((sh
= value("SHELL")) == NULL
)
371 pid
= start_command(sh
, 0, -1, pivec
[1], "-c", cmdbuf
, NULL
);
378 l
= read(pivec
[0], xname
, BUFSIZ
);
380 if (wait_child(pid
) < 0 && WIFSIGNALED(wait_status
) &&
381 WTERMSIG(wait_status
) != SIGPIPE
) {
382 fprintf(stderr
, "\"%s\": Expansion failed.\n", name
);
390 fprintf(stderr
, "\"%s\": No match.\n", name
);
394 fprintf(stderr
, "\"%s\": Expansion buffer overflow.\n", name
);
398 for (cp
= &xname
[l
-1]; *cp
== '\n' && cp
> xname
; cp
--)
401 if (strchr(xname
, ' ') && stat(xname
, &sbuf
) < 0) {
402 fprintf(stderr
, "\"%s\": Ambiguous.\n", name
);
405 return (savestr(xname
));
409 * Determine the current folder directory name.
412 getfold(char *name
, int namelen
)
417 if ((folder
= value("folder")) == NULL
)
420 copylen
= strlcpy(name
, folder
, namelen
);
422 copylen
= snprintf(name
, namelen
, "%s/%s",
423 homedir
? homedir
: ".", folder
);
424 return (copylen
< 0 || copylen
>= namelen
? (-1) : (0));
428 * Return the name of the dead.letter file.
435 if ((cp
= value("DEAD")) == NULL
|| (cp
= expand(cp
)) == NULL
)
436 cp
= expand("~/dead.letter");
437 else if (*cp
!= '/') {
440 snprintf(buf
, sizeof(buf
), "~/%s", cp
);