1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
2 *@ Mail to mail folders and displays.
4 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
5 * Copyright (c) 2012 - 2014 Steffen "Daode" Nurpmeso <sdaoden@users.sf.net>.
8 * Copyright (c) 1980, 1993
9 * The Regents of the University of California. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #ifndef HAVE_AMALGAMATION
45 PIPE_NULL
, /* No pipe- mimetype handler */
46 PIPE_COMM
, /* Normal command */
47 PIPE_ASYNC
, /* Normal command, run asynchronous */
48 PIPE_TEXT
, /* @ special command to force treatment as text */
49 PIPE_MSG
/* Display message (returned as command string) */
58 static void onpipe(int signo
);
60 static void _parsemultipart(struct message
*zmp
, struct mimepart
*ip
,
61 enum parseflags pf
, int level
);
63 /* Going for user display, print Part: info string */
64 static void _print_part_info(struct str
*out
, struct mimepart
*mip
,
65 struct ignoretab
*doign
, int level
);
67 /* Adjust output statistics */
68 SINLINE
void _addstats(off_t
*stats
, off_t lines
, off_t bytes
);
70 /* Call mime_write() as approbiate and adjust statistics */
71 SINLINE ssize_t
_out(char const *buf
, size_t len
, FILE *fp
,
72 enum conversion convert
, enum sendaction action
,
73 struct quoteflt
*qf
, off_t
*stats
, struct str
*rest
);
75 /* Query possible pipe command for MIME type */
76 static enum pipeflags
_pipecmd(char **result
, char const *content_type
);
79 static FILE * _pipefile(char const *pipecomm
, FILE **qbuf
, bool_t quote
,
82 static int sendpart(struct message
*zmp
, struct mimepart
*ip
, FILE *obuf
,
83 struct ignoretab
*doign
, struct quoteflt
*qf
,
84 enum sendaction action
, off_t
*stats
, int level
);
85 static struct mimepart
*parsemsg(struct message
*mp
, enum parseflags pf
);
86 static enum okay
parsepart(struct message
*zmp
, struct mimepart
*ip
,
87 enum parseflags pf
, int level
);
88 static void newpart(struct mimepart
*ip
, struct mimepart
**np
, off_t offs
,
90 static void endpart(struct mimepart
**np
, off_t xoffs
, long lines
);
91 static void parse822(struct message
*zmp
, struct mimepart
*ip
,
92 enum parseflags pf
, int level
);
94 static void parsepkcs7(struct message
*zmp
, struct mimepart
*ip
,
95 enum parseflags pf
, int level
);
97 static FILE *newfile(struct mimepart
*ip
, int *ispipe
);
98 static void pipecpy(FILE *pipebuf
, FILE *outbuf
, FILE *origobuf
,
99 struct quoteflt
*qf
, off_t
*stats
);
100 static void statusput(const struct message
*mp
, FILE *obuf
,
101 struct quoteflt
*qf
, off_t
*stats
);
102 static void xstatusput(const struct message
*mp
, FILE *obuf
,
103 struct quoteflt
*qf
, off_t
*stats
);
104 static void put_from_(FILE *fp
, struct mimepart
*ip
, off_t
*stats
);
106 static sigjmp_buf pipejmp
;
113 siglongjmp(pipejmp
, 1);
117 _parsemultipart(struct message
*zmp
, struct mimepart
*ip
, enum parseflags pf
,
121 * TODO Instead of the recursive multiple run parse we have today,
122 * TODO the send/MIME layer rewrite must create a "tree" of parts with
123 * TODO a single-pass parse, then address each part directly as
124 * TODO necessary; since boundaries start with -- and the content
125 * TODO rather forms a stack this is pretty cheap indeed!
127 struct mimepart
*np
= NULL
;
128 char *boundary
, *line
= NULL
;
129 size_t linesize
= 0, linelen
, cnt
, boundlen
;
135 if ((boundary
= mime_get_boundary(ip
->m_ct_type
, &linelen
)) == NULL
)
138 if ((ibuf
= setinput(&mb
, (struct message
*)ip
, NEED_BODY
)) == NULL
)
141 while (fgetline(&line
, &linesize
, &cnt
, &linelen
, ibuf
, 0))
145 newpart(ip
, &np
, offs
, NULL
);
146 while (fgetline(&line
, &linesize
, &cnt
, &linelen
, ibuf
, 0)) {
147 /* XXX linelen includes LF */
148 if (! ((lines
> 0 || part
== 0) && linelen
> boundlen
&&
149 !strncmp(line
, boundary
, boundlen
))) {
153 /* Subpart boundary? */
154 if (line
[boundlen
] == '\n') {
157 endpart(&np
, offs
- boundlen
- 2, lines
);
158 newpart(ip
, &np
, offs
- boundlen
- 2, NULL
);
160 endpart(&np
, offs
, 2);
161 newpart(ip
, &np
, offs
, &part
);
166 * Final boundary? Be aware of cases where there is no
167 * separating newline in between boundaries, as has been seen
168 * in a message with "Content-Type: multipart/appledouble;"
170 if (linelen
< boundlen
+ 2)
172 linelen
-= boundlen
+ 2;
173 if (line
[boundlen
] != '-' || line
[boundlen
+ 1] != '-' ||
174 (linelen
> 0 && line
[boundlen
+ 2] != '\n'))
178 endpart(&np
, offs
- boundlen
- 4, lines
);
179 newpart(ip
, &np
, offs
- boundlen
- 4, NULL
);
181 endpart(&np
, offs
+ cnt
, 2);
186 endpart(&np
, offs
, lines
);
188 for (np
= ip
->m_multipart
; np
; np
= np
->m_nextpart
)
189 if (np
->m_mimecontent
!= MIME_DISCARD
)
190 parsepart(zmp
, np
, pf
, level
+ 1);
195 _print_part_info(struct str
*out
, struct mimepart
*mip
,
196 struct ignoretab
*doign
, int level
)
198 struct str ct
= {NULL
, 0}, cd
= {NULL
, 0};
200 struct str
const *cpre
, *csuf
;
203 if (is_ign("content-type", 12, doign
)) {
204 out
->s
= mip
->m_ct_type_plain
;
205 out
->l
= strlen(out
->s
);
206 ct
.s
= ac_alloc(out
->l
+ 2 +1);
210 if (is_prefix("application/", out
->s
)) {
211 memcpy(ct
.s
+ 2, "appl../", 7);
215 out
->l
= MIN(out
->l
, 17);
217 out
->l
= MIN(out
->l
, 24);
218 memcpy(ct
.s
+ ct
.l
, out
->s
, out
->l
);
224 if (is_ign("content-disposition", 19, doign
) &&
225 mip
->m_filename
!= NULL
) {
228 ti
.l
= strlen(ti
.s
= mip
->m_filename
);
229 mime_fromhdr(&ti
, &to
, TD_ISPR
| TD_ICONV
| TD_DELCTRL
);
230 to
.l
= MIN(to
.l
, 25);
231 cd
.s
= ac_alloc(to
.l
+ 2 +1);
234 memcpy(cd
.s
+ 2, to
.s
, to
.l
);
240 /* Take care of "99.99", i.e., 5 */
241 if ((ps
= mip
->m_partstring
) == NULL
|| ps
[0] == '\0')
245 cpre
= colour_get(COLOURSPEC_PARTINFO
);
246 csuf
= colour_get(COLOURSPEC_RESET
);
251 /* Assume maximum possible sizes for 64 bit integers here to avoid any
252 * buffer overflows just in case we have a bug somewhere and / or the
253 * snprintf() is our internal version that doesn't really provide hard
255 #define __msg "%s%s[-- #%s : %lu/%lu%s%s --]%s\n"
256 out
->l
= sizeof(__msg
) +
258 (cpre
!= NULL
? cpre
->l
+ csuf
->l
: 0) +
260 strlen(ps
) + 2*21 + ct
.l
+ cd
.l
+ 1;
261 out
->s
= salloc(out
->l
);
262 out
->l
= snprintf(out
->s
, out
->l
, __msg
,
263 (level
|| (ps
[0] != '1' && ps
[1] == '\0') ? "\n" : ""),
264 (cpre
!= NULL
? cpre
->s
: ""),
265 ps
, (ul_it
)mip
->m_lines
, (ul_it
)mip
->m_size
,
266 (ct
.s
!= NULL
? ct
.s
: ""),
267 (cd
.s
!= NULL
? cd
.s
: ""),
268 (csuf
!= NULL
? csuf
->s
: ""));
269 out
->s
[out
->l
] = '\0';
279 _addstats(off_t
*stats
, off_t lines
, off_t bytes
)
289 _out(char const *buf
, size_t len
, FILE *fp
, enum conversion convert
, enum
290 sendaction action
, struct quoteflt
*qf
, off_t
*stats
, struct str
*rest
)
297 Well
... it turns out to
not work like that since of course a valid
298 RFC
4155 compliant parser
, like S
-nail
, takes care
for From_ lines only
299 after an empty line has been seen
, which cannot be detected that easily
301 ifdef HAVE_DEBUG
/* TODO assert legacy */
302 /* TODO if at all, this CAN only happen for SEND_DECRYPT, since all
303 * TODO other input situations handle RFC 4155 OR, if newly generated,
304 * TODO enforce quoted-printable if there is From_, as "required" by
305 * TODO RFC 5751. The SEND_DECRYPT case is not yet overhauled;
306 * TODO if it may happen in this path, we should just treat decryption
307 * TODO as we do for the other input paths; i.e., handle it in SSL!! */
308 if (action
== SEND_MBOX
|| action
== SEND_DECRYPT
)
309 assert(! is_head(buf
, len
));
311 if ((/*action == SEND_MBOX ||*/ action
== SEND_DECRYPT
) &&
318 flags
= ((int)action
& _TD_EOF
);
320 n
= mime_write(buf
, len
, fp
,
321 action
== SEND_MBOX
? CONV_NONE
: convert
,
323 (action
== SEND_TODISP
|| action
== SEND_TODISP_ALL
||
324 action
== SEND_QUOTE
||
325 action
== SEND_QUOTE_ALL
?
327 action
== SEND_TOSRCH
|| action
== SEND_TOPIPE
?
329 action
== SEND_TOFLTR
?
331 action
== SEND_SHOW
?
337 sz
= (ssize_t
)((size_t)sz
+ n
);
339 if (stats
!= NULL
&& stats
[0] != -1)
340 for (cp
= buf
; cp
< &buf
[sz
]; ++cp
)
343 _addstats(stats
, n
, sz
);
348 static enum pipeflags
349 _pipecmd(char **result
, char const *content_type
)
357 if (content_type
== NULL
)
360 /* First check wether there is a special pipe-MIMETYPE handler */
361 s
= ac_alloc(strlen(content_type
) + 6);
362 memcpy(s
, "pipe-", 5);
366 *cp
++ = lowerconv(*cq
);
367 while (*cq
++ != '\0');
374 /* User specified a command, inspect for special cases */
376 /* Normal command line */
379 } else if (*++cp
== '\0') {
380 /* Treat as plain text */
382 } else if (! msglist_is_single
) {
383 /* Viewing multiple messages in one go, don't block system */
385 *result
= UNCONST(tr(86,
386 "[Directly address message only to display this]\n"));
388 /* Viewing a single message only */
389 #if 0 /* TODO send/MIME layer rewrite: when we have a single-pass parser
390 * TODO then the parsing phase and the send phase will be separated;
391 * TODO that allows us to ask a user *before* we start the send, i.e.,
392 * TODO *before* a pager pipe is setup (which is the problem with
393 * TODO the '#if 0' code here) */
394 size_t l
= strlen(content_type
);
395 char const *x
= tr(999, "Should i display a part `%s' (y/n)? ");
396 s
= ac_alloc(l
+= strlen(x
) + 1);
397 snprintf(s
, l
- 1, x
, content_type
);
399 puts(""); /* .. we've hijacked a pipe 8-] ... */
402 x
= tr(210, "[User skipped diplay]\n");
404 *result
= UNCONST(x
);
408 /* Asynchronous command, normal command line */
409 ret
= PIPE_ASYNC
, *result
= ++cp
;
411 ret
= PIPE_COMM
, *result
= cp
;
418 _pipefile(char const *pipecomm
, FILE **qbuf
, bool_t quote
, bool_t async
)
426 if ((*qbuf
= Ftemp(&tempPipe
, "Rp", "w+", 0600, 1)) == NULL
) {
427 perror(tr(173, "tmpfile"));
434 if ((sh
= ok_vlook(SHELL
)) == NULL
)
436 if ((rbuf
= Popen(pipecomm
, "W", sh
,
437 async
? -1 : fileno(*qbuf
))) == NULL
)
448 * Send message described by the passed pointer to the
449 * passed output buffer. Return -1 on error.
450 * Adjust the status: field if need be.
451 * If doign is given, suppress ignored header fields.
452 * prefix is a string to prepend to each output line.
453 * action = data destination (SEND_MBOX,_TOFILE,_TODISP,_QUOTE,_DECRYPT).
454 * stats[0] is line count, stats[1] is character count. stats may be NULL.
455 * Note that stats[0] is valid for SEND_MBOX only.
458 sendmp(struct message
*mp
, FILE *obuf
, struct ignoretab
*doign
,
459 char const *prefix
, enum sendaction action
, off_t
*stats
)
468 if (mp
== dot
&& action
!= SEND_TOSRCH
&& action
!= SEND_TOFLTR
)
471 stats
[0] = stats
[1] = 0;
472 quoteflt_init(&qf
, prefix
);
475 * First line is the From_ line, so no headers there to worry about.
477 if ((ibuf
= setinput(&mb
, mp
, NEED_BODY
)) == NULL
)
482 colour_put(obuf
, COLOURSPEC_FROM_
);
483 if (mp
->m_flag
& MNOFROM
) {
484 if (doign
!= allignore
&& doign
!= fwdignore
&&
485 action
!= SEND_RFC822
)
486 sz
= fprintf(obuf
, "%.*sFrom %s %s\n",
488 (qf
.qf_pfix_len
!= 0 ? qf
.qf_pfix
: ""),
489 fakefrom(mp
), fakedate(mp
->m_time
));
491 if (qf
.qf_pfix_len
> 0 && doign
!= allignore
&&
492 doign
!= fwdignore
&& action
!= SEND_RFC822
) {
493 i
= fwrite(qf
.qf_pfix
, sizeof *qf
.qf_pfix
,
494 qf
.qf_pfix_len
, obuf
);
495 if (i
!= qf
.qf_pfix_len
) {
501 while (cnt
&& (c
= getc(ibuf
)) != EOF
) {
502 if (doign
!= allignore
&& doign
!= fwdignore
&&
503 action
!= SEND_RFC822
) {
514 _addstats(stats
, 1, sz
);
517 if (action
!= SEND_MBOX
&& action
!= SEND_RFC822
&& action
!= SEND_SHOW
)
518 pf
|= PARSE_DECRYPT
|PARSE_PARTS
;
519 if ((ip
= parsemsg(mp
, pf
)) == NULL
)
522 rv
= sendpart(mp
, ip
, obuf
, doign
, &qf
, action
, stats
, 0);
524 quoteflt_destroy(&qf
);
529 sendpart(struct message
*zmp
, struct mimepart
*ip
, FILE *obuf
,
530 struct ignoretab
*doign
, struct quoteflt
*qf
,
531 enum sendaction
volatile action
, off_t
*volatile stats
, int level
)
533 int volatile ispipe
, rt
= 0;
535 char *line
= NULL
, *cp
, *cp2
, *start
, *pipecomm
= NULL
;
536 size_t linesize
= 0, linelen
, cnt
;
537 int dostat
, infld
= 0, ignoring
= 1, isenc
, c
;
538 struct mimepart
*volatile np
;
539 FILE *volatile ibuf
= NULL
, *volatile pbuf
= obuf
,
540 *volatile qbuf
= obuf
, *origobuf
= obuf
;
541 enum conversion
volatile convert
;
542 sighandler_type
volatile oldpipe
= SIG_DFL
;
545 if (ip
->m_mimecontent
== MIME_PKCS7
&& ip
->m_multipart
&&
546 action
!= SEND_MBOX
&& action
!= SEND_RFC822
&&
552 if (!is_ign("status", 6, doign
))
554 if (!is_ign("x-status", 8, doign
))
559 if ((ibuf
= setinput(&mb
, (struct message
*)ip
, NEED_BODY
)) == NULL
)
562 if (ip
->m_mimecontent
== MIME_DISCARD
)
565 if ((ip
->m_flag
& MNOFROM
) == 0)
566 while (cnt
&& (c
= getc(ibuf
)) != EOF
) {
572 convert
= action
== SEND_TODISP
|| action
== SEND_TODISP_ALL
||
573 action
== SEND_QUOTE
|| action
== SEND_QUOTE_ALL
||
574 action
== SEND_TOSRCH
|| action
== SEND_TOFLTR
?
575 CONV_FROMHDR
: CONV_NONE
;
577 /* Work the headers */
578 quoteflt_reset(qf
, obuf
);
579 while (fgetline(&line
, &linesize
, &cnt
, &linelen
, ibuf
, 0)) {
581 if (line
[0] == '\n') {
583 * If line is blank, we've reached end of
584 * headers, so force out status: field
585 * and note that we are no longer in header
589 statusput(zmp
, obuf
, qf
, stats
);
591 xstatusput(zmp
, obuf
, qf
, stats
);
592 if (doign
!= allignore
)
593 _out("\n", 1, obuf
, CONV_NONE
, SEND_MBOX
,
598 if (infld
&& blankchar(line
[0])) {
600 * If this line is a continuation (via space or tab)
601 * of a previous header field, determine if the start
602 * of the line is a MIME encoded word.
605 for (cp
= line
; blankchar(*cp
); cp
++);
606 if (cp
> line
&& linelen
- (cp
- line
) > 8 &&
607 cp
[0] == '=' && cp
[1] == '?')
611 #ifdef HAVE_COLOUR /* XXX colour handling is yet hacky, should be filter! */
612 if (pipecomm
!= NULL
) {
614 colour_reset(obuf
); /* XXX reset after \n!! */
618 * Pick up the header field if we have one.
620 for (cp
= line
; (c
= *cp
& 0377) && c
!= ':' &&
624 while (spacechar(*cp
))
626 if (cp
[0] != ':' && level
== 0 && lineno
== 1) {
628 * Not a header line, force out status:
629 * This happens in uucp style mail where
630 * there are no headers at all.
633 statusput(zmp
, obuf
, qf
, stats
);
635 xstatusput(zmp
, obuf
, qf
, stats
);
636 if (doign
!= allignore
)
637 _out("\n", 1, obuf
, CONV_NONE
,SEND_MBOX
,
642 * If it is an ignored field and
643 * we care about such things, skip it.
646 *cp2
= 0; /* temporarily null terminate */
648 is_ign(line
, PTR2SIZE(cp2
- line
), doign
)) ||
649 (action
== SEND_MBOX
&&
650 !ok_blook(keep_content_length
) &&
651 (asccasecmp(line
, "content-length")==0
652 || asccasecmp(line
, "lines") == 0)))
654 else if (asccasecmp(line
, "status") == 0) {
656 * If the field is "status," go compute
657 * and print the real Status: field
660 statusput(zmp
, obuf
, qf
, stats
);
664 } else if (asccasecmp(line
, "x-status") == 0) {
666 * If the field is "status," go compute
667 * and print the real Status: field
670 xstatusput(zmp
, obuf
, qf
, stats
);
677 pipecomm
= savestrbuf(line
,
678 PTR2SIZE(cp2
- line
));
685 * Determine if the end of the line is a MIME encoded word.
688 if (cnt
&& (c
= getc(ibuf
)) != EOF
) {
690 if (linelen
> 0 && line
[linelen
- 1] == '\n')
691 cp
= &line
[linelen
- 2];
693 cp
= &line
[linelen
- 1];
694 while (cp
>= line
&& whitechar(*cp
))
696 if (cp
- line
> 8 && cp
[0] == '=' &&
703 size_t len
= linelen
;
705 if (action
== SEND_TODISP
||
706 action
== SEND_TODISP_ALL
||
707 action
== SEND_QUOTE
||
708 action
== SEND_QUOTE_ALL
||
709 action
== SEND_TOSRCH
||
710 action
== SEND_TOFLTR
) {
712 * Strip blank characters if two MIME-encoded
713 * words follow on continuing lines.
716 while (len
> 0 && blankchar(*start
)) {
721 if (len
> 0 && start
[len
- 1] == '\n')
723 while (len
> 0 && blankchar(start
[len
- 1]))
727 if (pipecomm
!= NULL
)
728 colour_put_header(obuf
, pipecomm
);
730 _out(start
, len
, obuf
, convert
, action
, qf
, stats
,
741 colour_reset(obuf
); /* XXX reset after \n!! */
748 switch (ip
->m_mimecontent
) {
755 case SEND_TODISP_ALL
:
758 if (ok_blook(rfc822_body_from_
)) {
759 if (qf
->qf_pfix_len
> 0) {
760 size_t i
= fwrite(qf
->qf_pfix
,
762 qf
->qf_pfix_len
, obuf
);
763 if (i
== qf
->qf_pfix_len
)
764 _addstats(stats
, 0, i
);
766 put_from_(obuf
, ip
->m_multipart
, stats
);
774 if (ok_blook(rfc822_body_from_
))
775 put_from_(obuf
, ip
->m_multipart
, stats
);
784 if (action
== SEND_TOFLTR
)
788 case MIME_TEXT_PLAIN
:
791 case SEND_TODISP_ALL
:
795 switch (_pipecmd(&pipecomm
, ip
->m_ct_type_plain
)) {
797 _out(pipecomm
, strlen(pipecomm
), obuf
,
798 CONV_NONE
, SEND_MBOX
, qf
, stats
, NULL
);
813 if (action
!= SEND_DECRYPT
)
817 if (action
!= SEND_MBOX
&& action
!= SEND_RFC822
&&
818 action
!= SEND_SHOW
&& ip
->m_multipart
)
824 case SEND_TODISP_ALL
:
828 switch (_pipecmd(&pipecomm
, ip
->m_ct_type_plain
)) {
830 _out(pipecomm
, strlen(pipecomm
), obuf
,
831 CONV_NONE
, SEND_MBOX
, qf
, stats
, NULL
);
841 goto jcopyout
; /* break; break; */
843 if (pipecomm
!= NULL
)
845 if (level
== 0 && cnt
) {
846 char const *x
= tr(210, "[Binary content]\n");
847 _out(x
, strlen(x
), obuf
, CONV_NONE
, SEND_MBOX
,
863 case MIME_ALTERNATIVE
:
864 if ((action
== SEND_TODISP
|| action
== SEND_QUOTE
) &&
865 !ok_blook(print_alternatives
)) {
867 for (np
= ip
->m_multipart
; np
; np
= np
->m_nextpart
)
868 if (np
->m_mimecontent
== MIME_TEXT_PLAIN
)
871 for (np
= ip
->m_multipart
; np
;
872 np
= np
->m_nextpart
) {
873 if (np
->m_ct_type_plain
!= NULL
&&
874 action
!= SEND_QUOTE
) {
875 _print_part_info(&rest
, np
,
877 _out(rest
.s
, rest
.l
, obuf
,
878 CONV_NONE
, SEND_MBOX
,
881 if (doact
&& np
->m_mimecontent
==
884 rt
= sendpart(zmp
, np
, obuf
,
887 quoteflt_reset(qf
, origobuf
);
900 case SEND_TODISP_ALL
:
909 if ((action
== SEND_TODISP
||
910 action
== SEND_TODISP_ALL
) &&
911 ip
->m_multipart
!= NULL
&&
912 ip
->m_multipart
->m_mimecontent
== MIME_DISCARD
&&
913 ip
->m_multipart
->m_nextpart
== NULL
) {
914 char const *x
= tr(85,
915 "[Missing multipart boundary - "
916 "use \"show\" to display "
917 "the raw message]\n");
918 _out(x
, strlen(x
), obuf
, CONV_NONE
, SEND_MBOX
,
921 for (np
= ip
->m_multipart
; np
; np
= np
->m_nextpart
) {
922 if (np
->m_mimecontent
== MIME_DISCARD
&&
923 action
!= SEND_DECRYPT
)
928 if (np
->m_partstring
&&
929 strcmp(np
->m_partstring
,
933 if ((obuf
= newfile(np
,
934 UNVOLATILE(&ispipe
)))
939 if (sigsetjmp(pipejmp
, 1)) {
943 oldpipe
= safe_signal(SIGPIPE
, onpipe
);
946 case SEND_TODISP_ALL
:
948 if (ip
->m_mimecontent
!= MIME_MULTI
&&
954 _print_part_info(&rest
, np
, doign
,
956 _out(rest
.s
, rest
.l
, obuf
,
957 CONV_NONE
, SEND_MBOX
, qf
,
974 if (sendpart(zmp
, np
, obuf
, doign
, qf
,
975 action
, stats
, level
+1) < 0)
977 quoteflt_reset(qf
, origobuf
);
978 if (action
== SEND_QUOTE
)
980 if (action
== SEND_TOFILE
&& obuf
!= origobuf
) {
984 jpipe_close
: safe_signal(SIGPIPE
, SIG_IGN
);
986 safe_signal(SIGPIPE
, oldpipe
);
999 * Copy out message body
1002 if (doign
== allignore
&& level
== 0) /* skip final blank line */
1004 switch (ip
->m_mimeenc
) {
1011 convert
= CONV_NONE
;
1014 convert
= CONV_FROMQP
;
1017 switch (ip
->m_mimecontent
) {
1019 case MIME_TEXT_PLAIN
:
1020 case MIME_TEXT_HTML
:
1021 convert
= CONV_FROMB64_T
;
1024 convert
= CONV_FROMB64
;
1028 convert
= CONV_NONE
;
1030 if (action
== SEND_DECRYPT
|| action
== SEND_MBOX
||
1031 action
== SEND_RFC822
|| action
== SEND_SHOW
)
1032 convert
= CONV_NONE
;
1034 if ((action
== SEND_TODISP
|| action
== SEND_TODISP_ALL
||
1035 action
== SEND_QUOTE
|| action
== SEND_QUOTE_ALL
||
1036 action
== SEND_TOSRCH
) &&
1037 (ip
->m_mimecontent
== MIME_TEXT_PLAIN
||
1038 ip
->m_mimecontent
== MIME_TEXT_HTML
||
1039 ip
->m_mimecontent
== MIME_TEXT
)) {
1040 char const *tcs
= charset_get_lc();
1042 if (iconvd
!= (iconv_t
)-1)
1043 n_iconv_close(iconvd
);
1044 /* TODO Since Base64 has an odd 4:3 relation in between input
1045 * TODO and output an input line may end with a partial
1046 * TODO multibyte character; this is no problem at all unless
1047 * TODO we send to the display or whatever, i.e., ensure
1048 * TODO makeprint() or something; to avoid this trap, *force*
1049 * TODO iconv(), in which case this layer will handle leftovers
1051 if (convert
== CONV_FROMB64_T
||
1052 (asccasecmp(tcs
, ip
->m_charset
) &&
1053 asccasecmp(charset_get_7bit(),
1055 iconvd
= n_iconv_open(tcs
, ip
->m_charset
);
1056 /* XXX Don't bail out if we cannot iconv(3) here;
1057 * XXX alternatively we could avoid trying to open
1058 * XXX if ip->m_charset is "unknown-8bit", which was
1059 * XXX the one that has bitten me?? */
1061 * TODO errors should DEFINETELY not be scrolled away!
1062 * TODO what about an error buffer (think old shsp(1)),
1063 * TODO re-dump errors since last snapshot when the
1064 * TODO command loop enters again? i.e., at least print
1065 * TODO "There were errors ?" before the next prompt,
1066 * TODO so that the user can look at the error buffer?
1068 if (iconvd
== (iconv_t
)-1 && errno
== EINVAL
) {
1069 fprintf(stderr
, tr(179,
1070 "Cannot convert from %s to %s\n"),
1071 ip
->m_charset
, tcs
);
1077 if (pipecomm
!= NULL
&&
1078 (action
== SEND_TODISP
|| action
== SEND_TODISP_ALL
||
1079 action
== SEND_QUOTE
|| action
== SEND_QUOTE_ALL
)) {
1081 pbuf
= _pipefile(pipecomm
, UNVOLATILE(&qbuf
),
1082 action
== SEND_QUOTE
|| action
== SEND_QUOTE_ALL
,
1084 action
= SEND_TOPIPE
;
1086 oldpipe
= safe_signal(SIGPIPE
, onpipe
);
1087 if (sigsetjmp(pipejmp
, 1))
1095 size_t save_qf_pfix_len
= qf
->qf_pfix_len
;
1096 off_t
*save_stats
= stats
;
1098 if (pbuf
!= origobuf
) {
1099 qf
->qf_pfix_len
= 0; /* XXX legacy (remove filter instead) */
1106 quoteflt_reset(qf
, pbuf
);
1107 while (!eof
&& fgetline(&line
, &linesize
, &cnt
, &linelen
, ibuf
, 0)) {
1109 if (_out(line
, linelen
, pbuf
, convert
, action
, qf
, stats
,
1110 &rest
) < 0 || ferror(pbuf
)) {
1111 rt
= -1; /* XXX Should bail away?! */
1115 if (!eof
&& rest
.l
!= 0) {
1125 if (pbuf
!= origobuf
) {
1126 qf
->qf_pfix_len
= save_qf_pfix_len
;
1133 safe_signal(SIGPIPE
, SIG_IGN
);
1134 Pclose(pbuf
, ispipe
);
1135 safe_signal(SIGPIPE
, oldpipe
);
1137 pipecpy(qbuf
, obuf
, origobuf
, qf
, stats
);
1140 if (iconvd
!= (iconv_t
)-1)
1141 n_iconv_close(iconvd
);
1146 static struct mimepart
*
1147 parsemsg(struct message
*mp
, enum parseflags pf
)
1149 struct mimepart
*ip
;
1151 ip
= csalloc(1, sizeof *ip
);
1152 ip
->m_flag
= mp
->m_flag
;
1153 ip
->m_have
= mp
->m_have
;
1154 ip
->m_block
= mp
->m_block
;
1155 ip
->m_offset
= mp
->m_offset
;
1156 ip
->m_size
= mp
->m_size
;
1157 ip
->m_xsize
= mp
->m_xsize
;
1158 ip
->m_lines
= mp
->m_lines
;
1159 ip
->m_xlines
= mp
->m_lines
;
1160 if (parsepart(mp
, ip
, pf
, 0) != OKAY
)
1166 parsepart(struct message
*zmp
, struct mimepart
*ip
, enum parseflags pf
,
1171 ip
->m_ct_type
= hfield1("content-type", (struct message
*)ip
);
1172 if (ip
->m_ct_type
!= NULL
) {
1173 ip
->m_ct_type_plain
= savestr(ip
->m_ct_type
);
1174 if ((cp
= strchr(ip
->m_ct_type_plain
, ';')) != NULL
)
1176 } else if (ip
->m_parent
&& ip
->m_parent
->m_mimecontent
== MIME_DIGEST
)
1177 ip
->m_ct_type_plain
= UNCONST("message/rfc822");
1179 ip
->m_ct_type_plain
= UNCONST("text/plain");
1182 ip
->m_charset
= mime_getparam("charset", ip
->m_ct_type
);
1183 if (ip
->m_charset
== NULL
)
1184 ip
->m_charset
= charset_get_7bit();
1185 ip
->m_ct_transfer_enc
= hfield1("content-transfer-encoding",
1186 (struct message
*)ip
);
1187 ip
->m_mimeenc
= ip
->m_ct_transfer_enc
?
1188 mime_getenc(ip
->m_ct_transfer_enc
) : MIME_7B
;
1189 if ((cp
= hfield1("content-disposition", (struct message
*)ip
)) == 0 ||
1190 (ip
->m_filename
= mime_getparam("filename", cp
)) == 0)
1191 if (ip
->m_ct_type
!= NULL
)
1192 ip
->m_filename
= mime_getparam("name", ip
->m_ct_type
);
1193 ip
->m_mimecontent
= mime_classify_content_of_part(ip
);
1195 if (pf
& PARSE_PARTS
) {
1197 fprintf(stderr
, tr(36,
1198 "MIME content too deeply nested\n"));
1201 switch (ip
->m_mimecontent
) {
1203 if (pf
& PARSE_DECRYPT
) {
1205 parsepkcs7(zmp
, ip
, pf
, level
);
1208 fprintf(stderr
, tr(225,
1209 "No SSL support compiled in.\n"));
1217 case MIME_ALTERNATIVE
:
1219 _parsemultipart(zmp
, ip
, pf
, level
);
1222 parse822(zmp
, ip
, pf
, level
);
1230 newpart(struct mimepart
*ip
, struct mimepart
**np
, off_t offs
, int *part
)
1232 struct mimepart
*pp
;
1235 *np
= csalloc(1, sizeof **np
);
1236 (*np
)->m_flag
= MNOFROM
;
1237 (*np
)->m_have
= HAVE_HEADER
|HAVE_BODY
;
1238 (*np
)->m_block
= mailx_blockof(offs
);
1239 (*np
)->m_offset
= mailx_offsetof(offs
);
1242 sz
= ip
->m_partstring
? strlen(ip
->m_partstring
) : 0;
1244 (*np
)->m_partstring
= salloc(sz
);
1245 if (ip
->m_partstring
)
1246 snprintf((*np
)->m_partstring
, sz
, "%s.%u",
1247 ip
->m_partstring
, *part
);
1249 snprintf((*np
)->m_partstring
, sz
, "%u", *part
);
1251 (*np
)->m_mimecontent
= MIME_DISCARD
;
1252 (*np
)->m_parent
= ip
;
1253 if (ip
->m_multipart
) {
1254 for (pp
= ip
->m_multipart
; pp
->m_nextpart
; pp
= pp
->m_nextpart
);
1255 pp
->m_nextpart
= *np
;
1257 ip
->m_multipart
= *np
;
1261 endpart(struct mimepart
**np
, off_t xoffs
, long lines
)
1265 offs
= mailx_positionof((*np
)->m_block
, (*np
)->m_offset
);
1266 (*np
)->m_size
= (*np
)->m_xsize
= xoffs
- offs
;
1267 (*np
)->m_lines
= (*np
)->m_xlines
= lines
;
1272 parse822(struct message
*zmp
, struct mimepart
*ip
, enum parseflags pf
,
1275 int c
, lastc
= '\n';
1279 struct mimepart
*np
;
1282 if ((ibuf
= setinput(&mb
, (struct message
*)ip
, NEED_BODY
)) == NULL
)
1285 lines
= ip
->m_lines
;
1286 while (cnt
&& ((c
= getc(ibuf
)) != EOF
)) {
1296 np
= csalloc(1, sizeof *np
);
1297 np
->m_flag
= MNOFROM
;
1298 np
->m_have
= HAVE_HEADER
|HAVE_BODY
;
1299 np
->m_block
= mailx_blockof(offs
);
1300 np
->m_offset
= mailx_offsetof(offs
);
1301 np
->m_size
= np
->m_xsize
= cnt
;
1302 np
->m_lines
= np
->m_xlines
= lines
;
1303 np
->m_partstring
= ip
->m_partstring
;
1305 ip
->m_multipart
= np
;
1306 if (ok_blook(rfc822_body_from_
)) {
1307 substdate((struct message
*)np
);
1308 np
->m_from
= fakefrom((struct message
*)np
);
1310 parsepart(zmp
, np
, pf
, level
+1);
1315 parsepkcs7(struct message
*zmp
, struct mimepart
*ip
, enum parseflags pf
,
1318 struct message m
, *xmp
;
1319 struct mimepart
*np
;
1322 memcpy(&m
, ip
, sizeof m
);
1323 to
= hfield1("to", zmp
);
1324 cc
= hfield1("cc", zmp
);
1325 if ((xmp
= smime_decrypt(&m
, to
, cc
, 0)) != NULL
) {
1326 np
= csalloc(1, sizeof *np
);
1327 np
->m_flag
= xmp
->m_flag
;
1328 np
->m_have
= xmp
->m_have
;
1329 np
->m_block
= xmp
->m_block
;
1330 np
->m_offset
= xmp
->m_offset
;
1331 np
->m_size
= xmp
->m_size
;
1332 np
->m_xsize
= xmp
->m_xsize
;
1333 np
->m_lines
= xmp
->m_lines
;
1334 np
->m_xlines
= xmp
->m_xlines
;
1335 np
->m_partstring
= ip
->m_partstring
;
1336 if (parsepart(zmp
, np
, pf
, level
+1) == OKAY
) {
1338 ip
->m_multipart
= np
;
1345 * Get a file for an attachment.
1348 newfile(struct mimepart
*ip
, int *ispipe
)
1350 char *f
= ip
->m_filename
;
1355 if (f
!= NULL
&& f
!= (char *)-1) {
1358 mime_fromhdr(&in
, &out
, TD_ISPR
);
1359 memcpy(f
, out
.s
, out
.l
);
1360 *(f
+ out
.l
) = '\0';
1364 if (options
& OPT_INTERACTIVE
) {
1366 jgetname
: (void)printf(tr(278, "Enter filename for part %s (%s)"),
1367 ip
->m_partstring
? ip
->m_partstring
: "?",
1368 ip
->m_ct_type_plain
);
1369 f2
= readstr_input(": ", f
!= (char *)-1 ? f
: NULL
);
1370 if (f2
== NULL
|| *f2
== '\0') {
1371 fprintf(stderr
, tr(279, "... skipping this\n"));
1373 } else if (*f2
== '|')
1374 /* Pipes are expanded by the shell */
1376 else if ((f3
= file_expand(f2
)) == NULL
)
1377 /* (Error message written by file_expand()) */
1382 if (f
== NULL
|| f
== (char *)-1)
1387 cp
= ok_vlook(SHELL
);
1390 fp
= Popen(f
+ 1, "w", cp
, 1);
1391 if (! (*ispipe
= (fp
!= NULL
)))
1394 if ((fp
= Fopen(f
, "w")) == NULL
)
1395 fprintf(stderr
, tr(176, "Cannot open %s\n"), f
);
1401 pipecpy(FILE *pipebuf
, FILE *outbuf
, FILE *origobuf
, struct quoteflt
*qf
,
1405 size_t linesize
= 0, linelen
, cnt
;
1410 cnt
= fsize(pipebuf
);
1413 quoteflt_reset(qf
, outbuf
);
1414 while (fgetline(&line
, &linesize
, &cnt
, &linelen
, pipebuf
, 0)
1416 if ((sz
= quoteflt_push(qf
, line
, linelen
)) < 0)
1420 if ((sz
= quoteflt_flush(qf
)) > 0)
1425 if (all_sz
> 0 && outbuf
== origobuf
)
1426 _addstats(stats
, 1, all_sz
);
1431 * Output a reasonable looking status field.
1434 statusput(const struct message
*mp
, FILE *obuf
, struct quoteflt
*qf
,
1440 if (mp
->m_flag
& MREAD
)
1442 if ((mp
->m_flag
& MNEW
) == 0)
1446 int i
= fprintf(obuf
, "%.*sStatus: %s\n",
1447 (int)qf
->qf_pfix_len
,
1448 (qf
->qf_pfix_len
> 0) ? qf
->qf_pfix
: 0,
1451 _addstats(stats
, 1, i
);
1456 xstatusput(const struct message
*mp
, FILE *obuf
, struct quoteflt
*qf
,
1460 char *xp
= xstatout
;
1462 if (mp
->m_flag
& MFLAGGED
)
1464 if (mp
->m_flag
& MANSWERED
)
1466 if (mp
->m_flag
& MDRAFTED
)
1470 int i
= fprintf(obuf
, "%.*sX-Status: %s\n",
1471 (int)qf
->qf_pfix_len
,
1472 (qf
->qf_pfix_len
> 0) ? qf
->qf_pfix
: 0,
1475 _addstats(stats
, 1, i
);
1480 put_from_(FILE *fp
, struct mimepart
*ip
, off_t
*stats
)
1482 char const *froma
, *date
, *nl
;
1485 if (ip
&& ip
->m_from
) {
1487 date
= fakedate(ip
->m_time
);
1491 date
= time_current
.tc_ctime
;
1495 colour_put(fp
, COLOURSPEC_FROM_
);
1496 i
= fprintf(fp
, "From %s %s%s", froma
, date
, nl
);
1499 _addstats(stats
, (*nl
!= '\0'), i
);