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 * 4. 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
32 static char sccsid
[] = "@(#)fio.c 8.2 (Berkeley) 4/20/95";
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
48 * Mail -- a mail program
53 extern int wait_status
;
56 * Set up the input pointers while copying the mail file into /tmp.
59 setptr(FILE *ibuf
, off_t offset
)
66 char linebuf
[LINESIZE
], pathbuf
[PATHSIZE
];
69 /* Get temporary file. */
70 (void)snprintf(pathbuf
, sizeof(pathbuf
), "%s/mail.XXXXXXXXXX", tmpdir
);
71 if ((c
= mkstemp(pathbuf
)) == -1 || (mestmp
= Fdopen(c
, "r+")) == NULL
)
72 err(1, "can't open %s", pathbuf
);
78 /* Seek into the file to get to the new messages */
79 (void)fseeko(ibuf
, offset
, SEEK_SET
);
81 * We need to make "offset" a pointer to the end of
82 * the temp file that has the copy of the mail file.
83 * If any messages have been edited, this will be
84 * different from the offset into the mail file.
86 (void)fseeko(otf
, (off_t
)0, SEEK_END
);
92 this.m_flag
= MUSED
|MNEW
;
98 if (fgets(linebuf
, sizeof(linebuf
), ibuf
) == NULL
) {
99 if (append(&this, mestmp
))
100 errx(1, "temporary file");
101 makemessage(mestmp
, omsgCount
);
104 count
= strlen(linebuf
);
106 * Transforms lines ending in <CR><LF> to just <LF>.
107 * This allows mail to be able to read Eudora mailboxes.
109 if (count
>= 2 && linebuf
[count
- 1] == '\n' &&
110 linebuf
[count
- 2] == '\r') {
112 linebuf
[count
- 1] = '\n';
115 (void)fwrite(linebuf
, sizeof(*linebuf
), count
, otf
);
119 linebuf
[count
- 1] = '\0';
120 if (maybe
&& linebuf
[0] == 'F' && ishead(linebuf
)) {
122 if (append(&this, mestmp
))
123 errx(1, "temporary file");
124 this.m_flag
= MUSED
|MNEW
;
127 this.m_block
= blockof(offset
);
128 this.m_offset
= boffsetof(offset
);
130 } else if (linebuf
[0] == 0) {
133 for (cp
= linebuf
, cp2
= "status";; cp
++) {
134 if ((c
= *cp2
++) == '\0') {
135 while (isspace((unsigned char)*cp
++))
139 while ((c
= *cp
++) != '\0')
141 this.m_flag
|= MREAD
;
143 this.m_flag
&= ~MNEW
;
147 if (*cp
!= c
&& *cp
!= toupper((unsigned char)c
))
152 this.m_size
+= count
;
154 maybe
= linebuf
[0] == 0;
159 * Drop the passed line onto the passed output buffer.
160 * If a write error occurs, return -1, else the count of
161 * characters written, including the newline if requested.
164 putline(FILE *obuf
, char *linebuf
, int outlf
)
169 (void)fwrite(linebuf
, sizeof(*linebuf
), c
, obuf
);
180 * Read up a line from the specified input into the line
181 * buffer. Return the number of characters read. Do not
182 * include the newline (or carriage return) at the end.
185 readline(FILE *ibuf
, char *linebuf
, int linesize
)
190 if (fgets(linebuf
, linesize
, ibuf
) == NULL
)
193 if (n
> 0 && linebuf
[n
- 1] == '\n')
195 if (n
> 0 && linebuf
[n
- 1] == '\r')
201 * Return a file buffer all ready to read up the
202 * passed message pointer.
205 setinput(struct message
*mp
)
210 positionof(mp
->m_block
, mp
->m_offset
), SEEK_SET
) < 0)
216 * Take the data out of the passed ghost file and toss it into
217 * a dynamically allocated message structure.
220 makemessage(FILE *f
, int omsgCount
)
223 struct message
*nmessage
;
225 size
= (msgCount
+ 1) * sizeof(struct message
);
226 nmessage
= (struct message
*)realloc(message
, size
);
227 if (nmessage
== NULL
)
228 errx(1, "Insufficient memory for %d messages\n",
230 if (omsgCount
== 0 || message
== NULL
)
233 dot
= nmessage
+ (dot
- message
);
235 size
-= (omsgCount
+ 1) * sizeof(struct message
);
237 (void)lseek(fileno(f
), (off_t
)sizeof(*message
), 0);
238 if (read(fileno(f
), (char *)&message
[omsgCount
], size
) != size
)
239 errx(1, "Message temporary file corrupted");
240 message
[msgCount
].m_size
= 0;
241 message
[msgCount
].m_lines
= 0;
246 * Append the passed message descriptor onto the temp file.
247 * If the write fails, return 1, else 0
250 append(struct message
*mp
, FILE *f
)
252 return (fwrite((char *)mp
, sizeof(*mp
), 1, f
) != 1);
256 * Delete a file, but only if the file is a plain file.
263 if (stat(name
, &sb
) < 0)
265 if (!S_ISREG(sb
.st_mode
)) {
269 return (unlink(name
));
272 static int sigdepth
; /* depth of holdsigs() */
273 static sigset_t nset
, oset
;
275 * Hold signals SIGHUP, SIGINT, and SIGQUIT.
281 if (sigdepth
++ == 0) {
282 (void)sigemptyset(&nset
);
283 (void)sigaddset(&nset
, SIGHUP
);
284 (void)sigaddset(&nset
, SIGINT
);
285 (void)sigaddset(&nset
, SIGQUIT
);
286 (void)sigprocmask(SIG_BLOCK
, &nset
, &oset
);
291 * Release signals SIGHUP, SIGINT, and SIGQUIT.
298 (void)sigprocmask(SIG_SETMASK
, &oset
, NULL
);
302 * Determine the size of the file possessed by
310 if (fstat(fileno(iob
), &sbuf
) < 0)
312 return (sbuf
.st_size
);
316 * Evaluate the string given as a new mailbox name.
317 * Supported meta characters:
318 * % for my system mail box
319 * %user for user's system mail box
320 * # for previous file
321 * & invoker's mbox file
322 * +file file in folder directory
323 * any shell meta character
324 * Return the file name as a dynamic string.
329 char xname
[PATHSIZE
];
330 char cmdbuf
[PATHSIZE
]; /* also used for file names */
337 * The order of evaluation is "%" and "#" expand into constants.
338 * "&" can expand into "+". "+" can expand into shell meta characters.
339 * Shell meta characters expand into constants.
340 * This way, we make no recursive expansion.
344 findmail(name
[1] ? name
+ 1 : myname
, xname
, sizeof(xname
));
345 return (savestr(xname
));
349 if (prevfile
[0] == 0) {
350 printf("No previous file\n");
353 return (savestr(prevfile
));
355 if (name
[1] == 0 && (name
= value("MBOX")) == NULL
)
359 if (name
[0] == '+' && getfold(cmdbuf
, sizeof(cmdbuf
)) >= 0) {
360 (void)snprintf(xname
, sizeof(xname
), "%s/%s", cmdbuf
, name
+ 1);
361 name
= savestr(xname
);
363 /* catch the most common shell meta character */
364 if (name
[0] == '~' && homedir
!= NULL
&&
365 (name
[1] == '/' || name
[1] == '\0')) {
366 (void)snprintf(xname
, sizeof(xname
), "%s%s", homedir
, name
+ 1);
367 name
= savestr(xname
);
369 if (!strpbrk(name
, "~{[*?$`'\"\\"))
370 return (savestr(name
));
371 if (pipe(pivec
) < 0) {
375 (void)snprintf(cmdbuf
, sizeof(cmdbuf
), "echo %s", name
);
376 if ((sh
= value("SHELL")) == NULL
)
378 pid
= start_command(sh
, 0, -1, pivec
[1], "-c", cmdbuf
, NULL
);
380 (void)close(pivec
[0]);
381 (void)close(pivec
[1]);
384 (void)close(pivec
[1]);
385 l
= read(pivec
[0], xname
, BUFSIZ
);
386 (void)close(pivec
[0]);
387 if (wait_child(pid
) < 0 && WIFSIGNALED(wait_status
) &&
388 WTERMSIG(wait_status
) != SIGPIPE
) {
389 fprintf(stderr
, "\"%s\": Expansion failed.\n", name
);
397 fprintf(stderr
, "\"%s\": No match.\n", name
);
401 fprintf(stderr
, "\"%s\": Expansion buffer overflow.\n", name
);
405 for (cp
= &xname
[l
-1]; *cp
== '\n' && cp
> xname
; cp
--)
408 if (strchr(xname
, ' ') && stat(xname
, &sbuf
) < 0) {
409 fprintf(stderr
, "\"%s\": Ambiguous.\n", name
);
412 return (savestr(xname
));
416 * Determine the current folder directory name.
419 getfold(char *name
, int namelen
)
424 if ((folder
= value("folder")) == NULL
)
427 copylen
= strlcpy(name
, folder
, namelen
);
429 copylen
= snprintf(name
, namelen
, "%s/%s",
430 homedir
? homedir
: ".", folder
);
431 return (copylen
< 0 || copylen
>= namelen
? (-1) : (0));
435 * Return the name of the dead.letter file.
442 if ((cp
= value("DEAD")) == NULL
|| (cp
= expand(cp
)) == NULL
)
443 cp
= expand("~/dead.letter");
444 else if (*cp
!= '/') {
447 (void)snprintf(buf
, sizeof(buf
), "~/%s", cp
);