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Add support for a -nosasl switch.
[nmh] / uip / mhlsbr.c
1
2 /*
3 * mhlsbr.c -- main routines for nmh message lister
4 *
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
8 */
9
10 #include <h/mh.h>
11 #include <h/signals.h>
12 #include <h/addrsbr.h>
13 #include <h/fmt_scan.h>
14 #include <h/tws.h>
15 #include <h/utils.h>
16 #include <setjmp.h>
17 #include <signal.h>
18 #include <errno.h>
19 #include <sys/wait.h>
20 #include <sys/types.h>
21
22 /*
23 * MAJOR BUG:
24 * for a component containing addresses, ADDRFMT, if COMPRESS is also
25 * set, then addresses get split wrong (not at the spaces between commas).
26 * To fix this correctly, putstr() should know about "atomic" strings that
27 * must NOT be broken across lines. That's too difficult for right now
28 * (it turns out that there are a number of degernate cases), so in
29 * oneline(), instead of
30 *
31 * (*onelp == '\n' && !onelp[1])
32 *
33 * being a terminating condition,
34 *
35 * (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
36 *
37 * is used instead. This cuts the line prematurely, and gives us a much
38 * better chance of getting things right.
39 */
40
41 #define ONECOMP 0
42 #define TWOCOMP 1
43 #define BODYCOMP 2
44
45 #define QUOTE '\\'
46
47 static struct swit mhlswitches[] = {
48 #define BELLSW 0
49 { "bell", 0 },
50 #define NBELLSW 1
51 { "nobell", 0 },
52 #define CLRSW 2
53 { "clear", 0 },
54 #define NCLRSW 3
55 { "noclear", 0 },
56 #define FOLDSW 4
57 { "folder +folder", 0 },
58 #define FORMSW 5
59 { "form formfile", 0 },
60 #define PROGSW 6
61 { "moreproc program", 0 },
62 #define NPROGSW 7
63 { "nomoreproc", 0 },
64 #define LENSW 8
65 { "length lines", 0 },
66 #define WIDTHSW 9
67 { "width columns", 0 },
68 #define SLEEPSW 10
69 { "sleep seconds", 0 },
70 #define BITSTUFFSW 11
71 { "dashstuffing", -12 }, /* interface from forw */
72 #define NBITSTUFFSW 12
73 { "nodashstuffing", -14 }, /* interface from forw */
74 #define VERSIONSW 13
75 { "version", 0 },
76 #define HELPSW 14
77 { "help", 0 },
78 #define FORW1SW 15
79 { "forward", -7 }, /* interface from forw */
80 #define FORW2SW 16
81 { "forwall", -7 }, /* interface from forw */
82 #define DGSTSW 17
83 { "digest list", -6 },
84 #define VOLUMSW 18
85 { "volume number", -6 },
86 #define ISSUESW 19
87 { "issue number", -5 },
88 #define NBODYSW 20
89 { "nobody", -6 },
90 #define FMTPROCSW 21
91 { "fmtproc program", 0 },
92 #define NFMTPROCSW 22
93 { "nofmtproc", 0 },
94 { NULL, 0 }
95 };
96
97 #define NOCOMPONENT 0x000001 /* don't show component name */
98 #define UPPERCASE 0x000002 /* display in all upper case */
99 #define CENTER 0x000004 /* center line */
100 #define CLEARTEXT 0x000008 /* cleartext */
101 #define EXTRA 0x000010 /* an "extra" component */
102 #define HDROUTPUT 0x000020 /* already output */
103 #define CLEARSCR 0x000040 /* clear screen */
104 #define LEFTADJUST 0x000080 /* left justify multiple lines */
105 #define COMPRESS 0x000100 /* compress text */
106 #define ADDRFMT 0x000200 /* contains addresses */
107 #define BELL 0x000400 /* sound bell at EOP */
108 #define DATEFMT 0x000800 /* contains dates */
109 #define FORMAT 0x001000 /* parse address/date/RFC-2047 field */
110 #define INIT 0x002000 /* initialize component */
111 #define SPLIT 0x010000 /* split headers (don't concatenate) */
112 #define NONEWLINE 0x020000 /* don't write trailing newline */
113 #define NOWRAP 0x040000 /* Don't wrap lines ever */
114 #define FMTFILTER 0x080000 /* Filter through format filter */
115 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07CLEARSCR\010LEFTADJUST\011COMPRESS\012ADDRFMT\013BELL\014DATEFMT\015FORMAT\016INIT\021SPLIT\022NONEWLINE\023NOWRAP\024FMTFILTER"
116 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT | NOWRAP)
117
118 /*
119 * A format string to be used as a command-line argument to the body
120 * format filter.
121 */
122
123 struct arglist {
124 struct format *a_fmt;
125 char *a_nfs;
126 struct arglist *a_next;
127 };
128
129 /*
130 * Linked list of command line arguments for the body format filter. This
131 * USED to be in "struct mcomp", but the format API got cleaned up and even
132 * though it reduced the code we had to do, it make things more complicated
133 * for us. Specifically:
134 *
135 * - The interface to the hash table has been cleaned up, which means the
136 * rooting around in the hash table is no longer necessary (yay!). But
137 * this ALSO means that we have to make sure that we call our format
138 * compilation routines before we process the message, because the
139 * components need to be visible in the hash table so we can save them for
140 * later. So we moved them out of "mcomp" and now compile them right before
141 * header processing starts.
142 * - We also use format strings to handle other components in the mhl
143 * configuration (using "formatfield" and "decode"), but here life
144 * gets complicated: they aren't dealt with in the normal way. Instead
145 * of referring to a component like {from}, each component is processed
146 * using the special {text} component. But these format strings need to be
147 * compiled BEFORE we compile the format arguments; in the previous
148 * implementation they were compiled and scanned as the headers were
149 * read, and that would reset the hash table that we need to populate
150 * the components used by the body format filter. So we are compiling
151 * the formatfield component strings ahead of time and then scanning them
152 * later.
153 *
154 * Okay, fine ... this was broken before. But you know what? Fixing this
155 * the right way will make things easier down the road.
156 *
157 * One side-effect to this change: format strings are now compiled only once
158 * for components specified with "formatfield", but they are compiled for
159 * every message for format arguments.
160 */
161
162 static struct arglist *arglist_head;
163 static struct arglist *arglist_tail;
164 static int filter_nargs = 0;
165
166 /*
167 * Flags/options for each component
168 */
169
170 struct mcomp {
171 char *c_name; /* component name */
172 char *c_text; /* component text */
173 char *c_ovtxt; /* text overflow indicator */
174 char *c_nfs; /* iff FORMAT */
175 struct format *c_fmt; /* .. */
176 struct comp *c_c_text; /* Ref to {text} in FORMAT */
177 struct comp *c_c_error; /* Ref to {error} */
178 int c_offset; /* left margin indentation */
179 int c_ovoff; /* overflow indentation */
180 int c_width; /* width of field */
181 int c_cwidth; /* width of component */
182 int c_length; /* length in lines */
183 long c_flags;
184 struct mcomp *c_next;
185 };
186
187 static struct mcomp *msghd = NULL;
188 static struct mcomp *msgtl = NULL;
189 static struct mcomp *fmthd = NULL;
190 static struct mcomp *fmttl = NULL;
191
192 static struct mcomp global = {
193 NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 40, BELL, NULL
194 };
195
196 static struct mcomp holder = {
197 NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0, NOCOMPONENT, NULL
198 };
199
200 struct pair {
201 char *p_name;
202 long p_flags;
203 };
204
205 static struct pair pairs[] = {
206 { "Date", DATEFMT },
207 { "From", ADDRFMT },
208 { "Sender", ADDRFMT },
209 { "Reply-To", ADDRFMT },
210 { "To", ADDRFMT },
211 { "cc", ADDRFMT },
212 { "Bcc", ADDRFMT },
213 { "Resent-Date", DATEFMT },
214 { "Resent-From", ADDRFMT },
215 { "Resent-Sender", ADDRFMT },
216 { "Resent-Reply-To", ADDRFMT },
217 { "Resent-To", ADDRFMT },
218 { "Resent-cc", ADDRFMT },
219 { "Resent-Bcc", ADDRFMT },
220 { NULL, 0 }
221 };
222
223 struct triple {
224 char *t_name;
225 long t_on;
226 long t_off;
227 };
228
229 static struct triple triples[] = {
230 { "nocomponent", NOCOMPONENT, 0 },
231 { "uppercase", UPPERCASE, 0 },
232 { "nouppercase", 0, UPPERCASE },
233 { "center", CENTER, 0 },
234 { "nocenter", 0, CENTER },
235 { "clearscreen", CLEARSCR, 0 },
236 { "noclearscreen", 0, CLEARSCR },
237 { "noclear", 0, CLEARSCR },
238 { "leftadjust", LEFTADJUST, 0 },
239 { "noleftadjust", 0, LEFTADJUST },
240 { "compress", COMPRESS, 0 },
241 { "nocompress", 0, COMPRESS },
242 { "split", SPLIT, 0 },
243 { "nosplit", 0, SPLIT },
244 { "addrfield", ADDRFMT, DATEFMT },
245 { "bell", BELL, 0 },
246 { "nobell", 0, BELL },
247 { "datefield", DATEFMT, ADDRFMT },
248 { "newline", 0, NONEWLINE },
249 { "nonewline", NONEWLINE, 0 },
250 { "wrap", 0, NOWRAP },
251 { "nowrap", NOWRAP, 0 },
252 { "format", FMTFILTER, 0 },
253 { "noformat", 0, FMTFILTER },
254 { NULL, 0, 0 }
255 };
256
257 static char *addrcomps[] = {
258 "from",
259 "sender",
260 "reply-to",
261 "to",
262 "cc",
263 "bcc",
264 "resent-from",
265 "resent-sender",
266 "resent-reply-to",
267 "resent-to",
268 "resent-cc",
269 "resent-bcc",
270 NULL
271 };
272
273
274 static int bellflg = 0;
275 static int clearflg = 0;
276 static int dashstuff = 0;
277 static int dobody = 1;
278 static int forwflg = 0;
279 static int forwall = 0;
280
281 static int sleepsw = NOTOK;
282
283 static char *digest = NULL;
284 static int volume = 0;
285 static int issue = 0;
286
287 static int exitstat = 0;
288 static int mhldebug = 0;
289
290 static int filesize = 0;
291
292 #define PITTY (-1)
293 #define NOTTY 0
294 #define ISTTY 1
295 static int ontty = NOTTY;
296
297 static int row;
298 static unsigned int column;
299
300 static int lm;
301 static int llim;
302 static int ovoff;
303 static int term;
304 static unsigned int wid;
305
306 static char *ovtxt;
307
308 static unsigned char *onelp;
309
310 static char *parptr;
311
312 static int num_ignores = 0;
313 static char *ignores[MAXARGS];
314
315 static jmp_buf env;
316 static jmp_buf mhlenv;
317
318 static char delim3[] = /* from forw.c */
319 "\n----------------------------------------------------------------------\n\n";
320 static char delim4[] = "\n------------------------------\n\n";
321
322 static FILE *(*mhl_action) () = (FILE *(*) ()) 0;
323
324 /*
325 * Redefine a couple of functions.
326 * These are undefined later in the code.
327 */
328 #define adios mhladios
329 #define done mhldone
330
331 /*
332 * prototypes
333 */
334 static void mhl_format (char *, int, int);
335 static int evalvar (struct mcomp *);
336 static int ptoi (char *, int *);
337 static int ptos (char *, char **);
338 static char *parse (void);
339 static void process (char *, char *, int, int);
340 static void mhlfile (FILE *, char *, int, int);
341 static int mcomp_flags (char *);
342 static char *mcomp_add (long, char *, char *);
343 static void mcomp_format (struct mcomp *, struct mcomp *);
344 static struct mcomp *add_queue (struct mcomp **, struct mcomp **, char *, char *, int);
345 static void free_queue (struct mcomp **, struct mcomp **);
346 static void putcomp (struct mcomp *, struct mcomp *, int);
347 static char *oneline (char *, long);
348 static void putstr (char *, long);
349 static void putch (char, long);
350 static void intrser (int);
351 static void pipeser (int);
352 static void quitser (int);
353 static void mhladios (char *, char *, ...);
354 static void mhldone (int);
355 static void m_popen (char *);
356 static void filterbody (struct mcomp *, char *, int, int, FILE *);
357 static void compile_formatfield(struct mcomp *);
358 static void compile_filterargs (void);
359
360
361 int
362 mhl (int argc, char **argv)
363 {
364 int length = 0, nomore = 0;
365 unsigned int i, vecp = 0;
366 int width = 0;
367 char *cp, *folder = NULL, *form = NULL;
368 char buf[BUFSIZ], *files[MAXARGS];
369 char **argp, **arguments;
370
371 invo_name = r1bindex (argv[0], '/');
372
373 /* read user profile/context */
374 context_read();
375
376 arguments = getarguments (invo_name, argc, argv, 1);
377 argp = arguments;
378
379 if ((cp = getenv ("MHLDEBUG")) && *cp)
380 mhldebug++;
381
382 while ((cp = *argp++)) {
383 if (*cp == '-') {
384 switch (smatch (++cp, mhlswitches)) {
385 case AMBIGSW:
386 ambigsw (cp, mhlswitches);
387 done (1);
388 case UNKWNSW:
389 adios (NULL, "-%s unknown\n", cp);
390
391 case HELPSW:
392 snprintf (buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
393 print_help (buf, mhlswitches, 1);
394 done (0);
395 case VERSIONSW:
396 print_version(invo_name);
397 done (0);
398
399 case BELLSW:
400 bellflg = 1;
401 continue;
402 case NBELLSW:
403 bellflg = -1;
404 continue;
405
406 case CLRSW:
407 clearflg = 1;
408 continue;
409 case NCLRSW:
410 clearflg = -1;
411 continue;
412
413 case FOLDSW:
414 if (!(folder = *argp++) || *folder == '-')
415 adios (NULL, "missing argument to %s", argp[-2]);
416 continue;
417 case FORMSW:
418 if (!(form = *argp++) || *form == '-')
419 adios (NULL, "missing argument to %s", argp[-2]);
420 continue;
421
422 case SLEEPSW:
423 if (!(cp = *argp++) || *cp == '-')
424 adios (NULL, "missing argument to %s", argp[-2]);
425 sleepsw = atoi (cp);/* ZERO ok! */
426 continue;
427
428 case PROGSW:
429 if (!(moreproc = *argp++) || *moreproc == '-')
430 adios (NULL, "missing argument to %s", argp[-2]);
431 continue;
432 case NPROGSW:
433 nomore++;
434 continue;
435
436 case FMTPROCSW:
437 if (!(formatproc = *argp++) || *formatproc == '-')
438 adios (NULL, "missing argument to %s", argp[-2]);
439 continue;
440 case NFMTPROCSW:
441 formatproc = NULL;
442 continue;
443
444 case LENSW:
445 if (!(cp = *argp++) || *cp == '-')
446 adios (NULL, "missing argument to %s", argp[-2]);
447 if ((length = atoi (cp)) < 1)
448 adios (NULL, "bad argument %s %s", argp[-2], cp);
449 continue;
450 case WIDTHSW:
451 if (!(cp = *argp++) || *cp == '-')
452 adios (NULL, "missing argument to %s", argp[-2]);
453 if ((width = atoi (cp)) < 1)
454 adios (NULL, "bad argument %s %s", argp[-2], cp);
455 continue;
456
457 case DGSTSW:
458 if (!(digest = *argp++) || *digest == '-')
459 adios (NULL, "missing argument to %s", argp[-2]);
460 continue;
461 case ISSUESW:
462 if (!(cp = *argp++) || *cp == '-')
463 adios (NULL, "missing argument to %s", argp[-2]);
464 if ((issue = atoi (cp)) < 1)
465 adios (NULL, "bad argument %s %s", argp[-2], cp);
466 continue;
467 case VOLUMSW:
468 if (!(cp = *argp++) || *cp == '-')
469 adios (NULL, "missing argument to %s", argp[-2]);
470 if ((volume = atoi (cp)) < 1)
471 adios (NULL, "bad argument %s %s", argp[-2], cp);
472 continue;
473
474 case FORW2SW:
475 forwall++; /* fall */
476 case FORW1SW:
477 forwflg++;
478 clearflg = -1;/* XXX */
479 continue;
480
481 case BITSTUFFSW:
482 dashstuff = 1; /* trinary logic */
483 continue;
484 case NBITSTUFFSW:
485 dashstuff = -1; /* trinary logic */
486 continue;
487
488 case NBODYSW:
489 dobody = 0;
490 continue;
491 }
492 }
493 files[vecp++] = cp;
494 }
495
496 if (!folder)
497 folder = getenv ("mhfolder");
498
499 if (isatty (fileno (stdout))) {
500 if (!nomore && !sc_hardcopy() && moreproc && *moreproc != '\0') {
501 if (mhl_action) {
502 SIGNAL (SIGINT, SIG_IGN);
503 SIGNAL2 (SIGQUIT, quitser);
504 }
505 SIGNAL2 (SIGPIPE, pipeser);
506 m_popen (moreproc);
507 ontty = PITTY;
508 } else {
509 SIGNAL (SIGINT, SIG_IGN);
510 SIGNAL2 (SIGQUIT, quitser);
511 ontty = ISTTY;
512 }
513 } else {
514 ontty = NOTTY;
515 }
516
517 mhl_format (form ? form : mhlformat, length, width);
518
519 if (vecp == 0) {
520 process (folder, NULL, 1, vecp = 1);
521 } else {
522 for (i = 0; i < vecp; i++)
523 process (folder, files[i], i + 1, vecp);
524 }
525
526 if (forwall) {
527 if (digest) {
528 printf ("%s", delim4);
529 if (volume == 0) {
530 snprintf (buf, sizeof(buf), "End of %s Digest\n", digest);
531 } else {
532 snprintf (buf, sizeof(buf), "End of %s Digest [Volume %d Issue %d]\n",
533 digest, volume, issue);
534 }
535 i = strlen (buf);
536 for (cp = buf + i; i > 1; i--)
537 *cp++ = '*';
538 *cp++ = '\n';
539 *cp = 0;
540 printf ("%s", buf);
541 }
542 else
543 printf ("\n------- End of Forwarded Message%s\n",
544 vecp > 1 ? "s" : "");
545 }
546
547 fflush(stdout);
548 if(ferror(stdout)){
549 adios("output", "error writing");
550 }
551
552 if (clearflg > 0 && ontty == NOTTY)
553 clear_screen ();
554
555 if (ontty == PITTY)
556 m_pclose ();
557
558 return exitstat;
559 }
560
561
562 static void
563 mhl_format (char *file, int length, int width)
564 {
565 int i;
566 char *bp, *cp, **ip;
567 char *ap, buffer[BUFSIZ], name[NAMESZ];
568 struct mcomp *c1;
569 struct stat st;
570 FILE *fp;
571 static dev_t dev = 0;
572 static ino_t ino = 0;
573 static time_t mtime = 0;
574
575 if (fmthd != NULL) {
576 if (stat (etcpath (file), &st) != NOTOK
577 && mtime == st.st_mtime
578 && dev == st.st_dev
579 && ino == st.st_ino)
580 goto out;
581 else
582 free_queue (&fmthd, &fmttl);
583 }
584
585 if ((fp = fopen (etcpath (file), "r")) == NULL)
586 adios (file, "unable to open format file");
587
588 if (fstat (fileno (fp), &st) != NOTOK) {
589 mtime = st.st_mtime;
590 dev = st.st_dev;
591 ino = st.st_ino;
592 }
593
594 global.c_ovtxt = global.c_nfs = NULL;
595 global.c_fmt = NULL;
596 global.c_offset = 0;
597 global.c_ovoff = -1;
598 if ((i = sc_width ()) > 5)
599 global.c_width = i;
600 global.c_cwidth = -1;
601 if ((i = sc_length ()) > 5)
602 global.c_length = i - 1;
603 global.c_flags = BELL; /* BELL is default */
604 *(ip = ignores) = NULL;
605 filter_nargs = 0;
606
607 while (vfgets (fp, &ap) == OK) {
608 bp = ap;
609 if (*bp == ';')
610 continue;
611
612 if ((cp = strchr(bp, '\n')))
613 *cp = 0;
614
615 if (*bp == ':') {
616 c1 = add_queue (&fmthd, &fmttl, NULL, bp + 1, CLEARTEXT);
617 continue;
618 }
619
620 parptr = bp;
621 strncpy (name, parse(), sizeof(name));
622 switch (*parptr) {
623 case '\0':
624 case ',':
625 case '=':
626 /*
627 * Split this list of fields to ignore, and copy
628 * it to the end of the current "ignores" list.
629 */
630 if (!mh_strcasecmp (name, "ignores")) {
631 char **tmparray, **p;
632 int n = 0;
633
634 /* split the fields */
635 tmparray = brkstring (getcpy (++parptr), ",", NULL);
636
637 /* count number of fields split */
638 p = tmparray;
639 while (*p++)
640 n++;
641
642 /* copy pointers to split fields to ignores array */
643 ip = copyip (tmparray, ip, MAXARGS - num_ignores);
644 num_ignores += n;
645 continue;
646 }
647 parptr = bp;
648 while (*parptr) {
649 if (evalvar (&global))
650 adios (NULL, "format file syntax error: %s", bp);
651 if (*parptr)
652 parptr++;
653 }
654 continue;
655
656 case ':':
657 c1 = add_queue (&fmthd, &fmttl, name, NULL, INIT);
658 while (*parptr == ':' || *parptr == ',') {
659 parptr++;
660 if (evalvar (c1))
661 adios (NULL, "format file syntax error: %s", bp);
662 }
663 if (!c1->c_nfs && global.c_nfs) {
664 if (c1->c_flags & DATEFMT) {
665 if (global.c_flags & DATEFMT) {
666 c1->c_nfs = getcpy (global.c_nfs);
667 compile_formatfield(c1);
668 }
669 }
670 else
671 if (c1->c_flags & ADDRFMT) {
672 if (global.c_flags & ADDRFMT) {
673 c1->c_nfs = getcpy (global.c_nfs);
674 compile_formatfield(c1);
675 }
676 }
677 }
678 continue;
679
680 default:
681 adios (NULL, "format file syntax error: %s", bp);
682 }
683 }
684 fclose (fp);
685
686 if (mhldebug) {
687 for (c1 = fmthd; c1; c1 = c1->c_next) {
688 fprintf (stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n",
689 c1->c_name, c1->c_text, c1->c_ovtxt);
690 fprintf (stderr, "\tnfs=0x%x fmt=0x%x\n",
691 (unsigned int)(unsigned long) c1->c_nfs,
692 (unsigned int)(unsigned long) c1->c_fmt);
693 fprintf (stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d length=%d\n",
694 c1->c_offset, c1->c_ovoff, c1->c_width,
695 c1->c_cwidth, c1->c_length);
696 fprintf (stderr, "\tflags=%s\n",
697 snprintb (buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
698 }
699 }
700
701 out:
702 if (clearflg == 1) {
703 global.c_flags |= CLEARSCR;
704 } else {
705 if (clearflg == -1)
706 global.c_flags &= ~CLEARSCR;
707 }
708
709 switch (bellflg) { /* command line may override format file */
710 case 1:
711 global.c_flags |= BELL;
712 break;
713 case -1:
714 global.c_flags &= ~BELL;
715 break;
716 }
717
718 if (length)
719 global.c_length = length;
720 if (width)
721 global.c_width = width;
722 if (global.c_length < 5)
723 global.c_length = 10000;
724 if (global.c_width < 5)
725 global.c_width = 10000;
726 }
727
728
729 static int
730 evalvar (struct mcomp *c1)
731 {
732 char *cp, name[NAMESZ];
733 struct triple *ap;
734
735 if (!*parptr)
736 return 0;
737 strncpy (name, parse(), sizeof(name));
738
739 if (!mh_strcasecmp (name, "component")) {
740 if (ptos (name, &c1->c_text))
741 return 1;
742 c1->c_flags &= ~NOCOMPONENT;
743 return 0;
744 }
745
746 if (!mh_strcasecmp (name, "overflowtext"))
747 return ptos (name, &c1->c_ovtxt);
748
749 if (!mh_strcasecmp (name, "formatfield")) {
750 if (ptos (name, &cp))
751 return 1;
752 c1->c_nfs = getcpy (new_fs (NULL, NULL, cp));
753 compile_formatfield(c1);
754 c1->c_flags |= FORMAT;
755 return 0;
756 }
757
758 if (!mh_strcasecmp (name, "decode")) {
759 c1->c_nfs = getcpy (new_fs (NULL, NULL, "%(decode{text})"));
760 compile_formatfield(c1);
761 c1->c_flags |= FORMAT;
762 return 0;
763 }
764
765 if (!mh_strcasecmp (name, "offset"))
766 return ptoi (name, &c1->c_offset);
767 if (!mh_strcasecmp (name, "overflowoffset"))
768 return ptoi (name, &c1->c_ovoff);
769 if (!mh_strcasecmp (name, "width"))
770 return ptoi (name, &c1->c_width);
771 if (!mh_strcasecmp (name, "compwidth"))
772 return ptoi (name, &c1->c_cwidth);
773 if (!mh_strcasecmp (name, "length"))
774 return ptoi (name, &c1->c_length);
775 if (!mh_strcasecmp (name, "nodashstuffing"))
776 return (dashstuff = -1);
777
778 for (ap = triples; ap->t_name; ap++)
779 if (!mh_strcasecmp (ap->t_name, name)) {
780 c1->c_flags |= ap->t_on;
781 c1->c_flags &= ~ap->t_off;
782 return 0;
783 }
784
785 if (!mh_strcasecmp (name, "formatarg")) {
786 struct arglist *args;
787
788 if (ptos (name, &cp))
789 return 1;
790
791 if (mh_strcasecmp (c1->c_name, "body")) {
792 advise (NULL, "format filters are currently only supported on "
793 "the \"body\" component");
794 return 1;
795 }
796
797 args = (struct arglist *) calloc((size_t) 1, sizeof(struct arglist));
798
799 if (arglist_tail)
800 arglist_tail->a_next = args;
801
802 arglist_tail = args;
803
804 if (! arglist_head)
805 arglist_head = args;
806
807 args->a_nfs = getcpy (new_fs (NULL, NULL, cp));
808 filter_nargs++;
809
810 return 0;
811 }
812
813 return 1;
814 }
815
816
817 static int
818 ptoi (char *name, int *i)
819 {
820 char *cp;
821
822 if (*parptr++ != '=' || !*(cp = parse ())) {
823 advise (NULL, "missing argument to variable %s", name);
824 return 1;
825 }
826
827 *i = atoi (cp);
828 return 0;
829 }
830
831
832 static int
833 ptos (char *name, char **s)
834 {
835 char c, *cp;
836
837 if (*parptr++ != '=') {
838 advise (NULL, "missing argument to variable %s", name);
839 return 1;
840 }
841
842 if (*parptr != '"') {
843 for (cp = parptr;
844 *parptr && *parptr != ':' && *parptr != ',';
845 parptr++)
846 continue;
847 } else {
848 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
849 if (*parptr == QUOTE)
850 if (!*++parptr)
851 parptr--;
852 }
853 c = *parptr;
854 *parptr = 0;
855 *s = getcpy (cp);
856 if ((*parptr = c) == '"')
857 parptr++;
858 return 0;
859 }
860
861
862 static char *
863 parse (void)
864 {
865 int c;
866 char *cp;
867 static char result[NAMESZ];
868
869 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
870 c = *parptr;
871 if (isalnum (c)
872 || c == '.'
873 || c == '-'
874 || c == '_'
875 || c =='['
876 || c == ']')
877 *cp++ = c;
878 else
879 break;
880 }
881 *cp = '\0';
882
883 return result;
884 }
885
886
887 /*
888 * Process one file/message
889 */
890
891 static void
892 process (char *folder, char *fname, int ofilen, int ofilec)
893 {
894 char *cp = NULL;
895 FILE *fp = NULL;
896 struct mcomp *c1;
897 struct stat st;
898 struct arglist *ap;
899
900 switch (setjmp (env)) {
901 case OK:
902 if (fname) {
903 fp = mhl_action ? (*mhl_action) (fname) : fopen (fname, "r");
904 if (fp == NULL) {
905 advise (fname, "unable to open");
906 exitstat++;
907 return;
908 }
909 } else {
910 fname = "(stdin)";
911 fp = stdin;
912 }
913 if (fstat(fileno(fp), &st) == 0) {
914 filesize = st.st_size;
915 } else {
916 filesize = 0;
917 }
918 cp = folder ? concat (folder, ":", fname, NULL) : getcpy (fname);
919 if (ontty != PITTY)
920 SIGNAL (SIGINT, intrser);
921 mhlfile (fp, cp, ofilen, ofilec); /* FALL THROUGH! */
922
923 for (ap = arglist_head; ap; ap = ap->a_next) {
924 fmt_free(ap->a_fmt, 0);
925 ap->a_fmt = NULL;
926 }
927
928 if (arglist_head)
929 fmt_free(NULL, 1);
930
931 default:
932 if (ontty != PITTY)
933 SIGNAL (SIGINT, SIG_IGN);
934 if (mhl_action == NULL && fp != stdin)
935 fclose (fp);
936 free (cp);
937 if (holder.c_text) {
938 free (holder.c_text);
939 holder.c_text = NULL;
940 }
941 free_queue (&msghd, &msgtl);
942 for (c1 = fmthd; c1; c1 = c1->c_next)
943 c1->c_flags &= ~HDROUTPUT;
944 break;
945 }
946
947 }
948
949
950 static void
951 mhlfile (FILE *fp, char *mname, int ofilen, int ofilec)
952 {
953 int state, bucket;
954 struct mcomp *c1, *c2, *c3;
955 char **ip, name[NAMESZ], buf[BUFSIZ];
956
957 compile_filterargs();
958
959 if (forwall) {
960 if (digest)
961 printf ("%s", ofilen == 1 ? delim3 : delim4);
962 else {
963 printf ("\n-------");
964 if (ofilen == 1)
965 printf (" Forwarded Message%s", ofilec > 1 ? "s" : "");
966 else
967 printf (" Message %d", ofilen);
968 printf ("\n\n");
969 }
970 } else {
971 switch (ontty) {
972 case PITTY:
973 if (ofilec > 1) {
974 if (ofilen > 1) {
975 if ((global.c_flags & CLEARSCR))
976 clear_screen ();
977 else
978 printf ("\n\n\n");
979 }
980 printf (">>> %s\n\n", mname);
981 }
982 break;
983
984 case ISTTY:
985 strncpy (buf, "\n", sizeof(buf));
986 if (ofilec > 1) {
987 if (SOprintf ("Press <return> to list \"%s\"...", mname)) {
988 if (ofilen > 1)
989 printf ("\n\n\n");
990 printf ("Press <return> to list \"%s\"...", mname);
991 }
992 fflush (stdout);
993 buf[0] = 0;
994 read (fileno (stdout), buf, sizeof(buf));
995 }
996 if (strchr(buf, '\n')) {
997 if ((global.c_flags & CLEARSCR))
998 clear_screen ();
999 }
1000 else
1001 printf ("\n");
1002 break;
1003
1004 default:
1005 if (ofilec > 1) {
1006 if (ofilen > 1) {
1007 printf ("\n\n\n");
1008 if (clearflg > 0)
1009 clear_screen ();
1010 }
1011 printf (">>> %s\n\n", mname);
1012 }
1013 break;
1014 }
1015 }
1016
1017 for (state = FLD;;) {
1018 switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
1019 case FLD:
1020 case FLDPLUS:
1021 bucket = fmt_addcomptext(name, buf);
1022 for (ip = ignores; *ip; ip++)
1023 if (!mh_strcasecmp (name, *ip)) {
1024 while (state == FLDPLUS) {
1025 state = m_getfld (state, name, buf, sizeof(buf), fp);
1026 fmt_appendcomp(bucket, name, buf);
1027 }
1028 break;
1029 }
1030 if (*ip)
1031 continue;
1032
1033 for (c2 = fmthd; c2; c2 = c2->c_next)
1034 if (!mh_strcasecmp (c2->c_name, name))
1035 break;
1036 c1 = NULL;
1037 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
1038 for (c1 = msghd; c1; c1 = c1->c_next)
1039 if (!mh_strcasecmp (c1->c_name, c3->c_name)) {
1040 c1->c_text =
1041 mcomp_add (c1->c_flags, buf, c1->c_text);
1042 break;
1043 }
1044 if (c1 == NULL)
1045 c1 = add_queue (&msghd, &msgtl, name, buf, 0);
1046 while (state == FLDPLUS) {
1047 state = m_getfld (state, name, buf, sizeof(buf), fp);
1048 c1->c_text = add (buf, c1->c_text);
1049 fmt_appendcomp(bucket, name, buf);
1050 }
1051 if (c2 == NULL)
1052 c1->c_flags |= EXTRA;
1053 continue;
1054
1055 case BODY:
1056 case FILEEOF:
1057 row = column = 0;
1058 for (c1 = fmthd; c1; c1 = c1->c_next) {
1059 if (c1->c_flags & CLEARTEXT) {
1060 putcomp (c1, c1, ONECOMP);
1061 continue;
1062 }
1063 if (!mh_strcasecmp (c1->c_name, "messagename")) {
1064 holder.c_text = concat ("(Message ", mname, ")\n",
1065 NULL);
1066 putcomp (c1, &holder, ONECOMP);
1067 free (holder.c_text);
1068 holder.c_text = NULL;
1069 continue;
1070 }
1071 if (!mh_strcasecmp (c1->c_name, "extras")) {
1072 for (c2 = msghd; c2; c2 = c2->c_next)
1073 if (c2->c_flags & EXTRA)
1074 putcomp (c1, c2, TWOCOMP);
1075 continue;
1076 }
1077 if (dobody && !mh_strcasecmp (c1->c_name, "body")) {
1078 if (c1->c_flags & FMTFILTER && state == BODY &&
1079 formatproc != NULL) {
1080 filterbody(c1, buf, sizeof(buf), state, fp);
1081 } else {
1082 holder.c_text = mh_xmalloc (sizeof(buf));
1083 strncpy (holder.c_text, buf, sizeof(buf));
1084 while (state == BODY) {
1085 putcomp (c1, &holder, BODYCOMP);
1086 state = m_getfld (state, name, holder.c_text,
1087 sizeof(buf), fp);
1088 }
1089 free (holder.c_text);
1090 holder.c_text = NULL;
1091 }
1092 continue;
1093 }
1094 for (c2 = msghd; c2; c2 = c2->c_next)
1095 if (!mh_strcasecmp (c2->c_name, c1->c_name)) {
1096 putcomp (c1, c2, ONECOMP);
1097 if (!(c1->c_flags & SPLIT))
1098 break;
1099 }
1100 }
1101 return;
1102
1103 case LENERR:
1104 case FMTERR:
1105 advise (NULL, "format error in message %s", mname);
1106 exitstat++;
1107 return;
1108
1109 default:
1110 adios (NULL, "getfld() returned %d", state);
1111 }
1112 }
1113 }
1114
1115
1116 static int
1117 mcomp_flags (char *name)
1118 {
1119 struct pair *ap;
1120
1121 for (ap = pairs; ap->p_name; ap++)
1122 if (!mh_strcasecmp (ap->p_name, name))
1123 return (ap->p_flags);
1124
1125 return 0;
1126 }
1127
1128
1129 static char *
1130 mcomp_add (long flags, char *s1, char *s2)
1131 {
1132 char *dp;
1133
1134 if (!(flags & ADDRFMT))
1135 return add (s1, s2);
1136
1137 if (s2 && *(dp = s2 + strlen (s2) - 1) == '\n')
1138 *dp = 0;
1139
1140 return add (s1, add (",\n", s2));
1141 }
1142
1143
1144 struct pqpair {
1145 char *pq_text;
1146 char *pq_error;
1147 struct pqpair *pq_next;
1148 };
1149
1150
1151 static void
1152 mcomp_format (struct mcomp *c1, struct mcomp *c2)
1153 {
1154 int dat[5];
1155 char *ap, *cp;
1156 char buffer[BUFSIZ], error[BUFSIZ];
1157 struct pqpair *p, *q;
1158 struct pqpair pq;
1159 struct mailname *mp;
1160
1161 ap = c2->c_text;
1162 c2->c_text = NULL;
1163 dat[0] = 0;
1164 dat[1] = 0;
1165 dat[2] = filesize;
1166 dat[3] = sizeof(buffer) - 1;
1167 dat[4] = 0;
1168
1169 if (!(c1->c_flags & ADDRFMT)) {
1170 if (c1->c_c_text)
1171 c1->c_c_text->c_text = ap;
1172 if ((cp = strrchr(ap, '\n'))) /* drop ending newline */
1173 if (!cp[1])
1174 *cp = 0;
1175
1176 fmt_scan (c1->c_fmt, buffer, sizeof buffer - 1, sizeof buffer - 1, dat);
1177 /* Don't need to append a newline, dctime() already did */
1178 c2->c_text = getcpy (buffer);
1179
1180 /* ap is now owned by the component struct, so do NOT free it here */
1181 return;
1182 }
1183
1184 (q = &pq)->pq_next = NULL;
1185 while ((cp = getname (ap))) {
1186 if ((p = (struct pqpair *) calloc ((size_t) 1, sizeof(*p))) == NULL)
1187 adios (NULL, "unable to allocate pqpair memory");
1188
1189 if ((mp = getm (cp, NULL, 0, AD_NAME, error)) == NULL) {
1190 p->pq_text = getcpy (cp);
1191 p->pq_error = getcpy (error);
1192 } else {
1193 p->pq_text = getcpy (mp->m_text);
1194 mnfree (mp);
1195 }
1196 q = (q->pq_next = p);
1197 }
1198
1199 for (p = pq.pq_next; p; p = q) {
1200 if (c1->c_c_text) {
1201 c1->c_c_text->c_text = p->pq_text;
1202 p->pq_text = NULL;
1203 }
1204 if (c1->c_c_error) {
1205 c1->c_c_error->c_text = p->pq_error;
1206 p->pq_error = NULL;
1207 }
1208
1209 fmt_scan (c1->c_fmt, buffer, sizeof buffer - 1, sizeof buffer - 1, dat);
1210 if (*buffer) {
1211 if (c2->c_text)
1212 c2->c_text = add (",\n", c2->c_text);
1213 if (*(cp = buffer + strlen (buffer) - 1) == '\n')
1214 *cp = 0;
1215 c2->c_text = add (buffer, c2->c_text);
1216 }
1217
1218 if (p->pq_text)
1219 free (p->pq_text);
1220 if (p->pq_error)
1221 free (p->pq_error);
1222 q = p->pq_next;
1223 free ((char *) p);
1224 }
1225
1226 c2->c_text = add ("\n", c2->c_text);
1227 free (ap);
1228 }
1229
1230
1231 static struct mcomp *
1232 add_queue (struct mcomp **head, struct mcomp **tail, char *name, char *text, int flags)
1233 {
1234 struct mcomp *c1;
1235
1236 if ((c1 = (struct mcomp *) calloc ((size_t) 1, sizeof(*c1))) == NULL)
1237 adios (NULL, "unable to allocate comp memory");
1238
1239 c1->c_flags = flags & ~INIT;
1240 if ((c1->c_name = name ? getcpy (name) : NULL))
1241 c1->c_flags |= mcomp_flags (c1->c_name);
1242 c1->c_text = text ? getcpy (text) : NULL;
1243 if (flags & INIT) {
1244 if (global.c_ovtxt)
1245 c1->c_ovtxt = getcpy (global.c_ovtxt);
1246 c1->c_offset = global.c_offset;
1247 c1->c_ovoff = global. c_ovoff;
1248 c1->c_width = c1->c_length = 0;
1249 c1->c_cwidth = global.c_cwidth;
1250 c1->c_flags |= global.c_flags & GFLAGS;
1251 }
1252 if (*head == NULL)
1253 *head = c1;
1254 if (*tail != NULL)
1255 (*tail)->c_next = c1;
1256 *tail = c1;
1257
1258 return c1;
1259 }
1260
1261
1262 static void
1263 free_queue (struct mcomp **head, struct mcomp **tail)
1264 {
1265 struct mcomp *c1, *c2;
1266
1267 for (c1 = *head; c1; c1 = c2) {
1268 c2 = c1->c_next;
1269 if (c1->c_name)
1270 free (c1->c_name);
1271 if (c1->c_text)
1272 free (c1->c_text);
1273 if (c1->c_ovtxt)
1274 free (c1->c_ovtxt);
1275 if (c1->c_nfs)
1276 free (c1->c_nfs);
1277 if (c1->c_fmt)
1278 fmt_free (c1->c_fmt, 0);
1279 free ((char *) c1);
1280 }
1281
1282 *head = *tail = NULL;
1283 }
1284
1285
1286 static void
1287 putcomp (struct mcomp *c1, struct mcomp *c2, int flag)
1288 {
1289 int count, cchdr;
1290 unsigned char *cp;
1291
1292 cchdr = 0;
1293 lm = 0;
1294 llim = c1->c_length ? c1->c_length : -1;
1295 wid = c1->c_width ? c1->c_width : global.c_width;
1296 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
1297 + c1->c_offset;
1298 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
1299 ovtxt = "";
1300 if (wid < ovoff + strlen (ovtxt) + 5)
1301 adios (NULL, "component: %s width(%d) too small for overflow(%d)",
1302 c1->c_name, wid, ovoff + strlen (ovtxt) + 5);
1303 onelp = NULL;
1304
1305 if (c1->c_flags & CLEARTEXT) {
1306 putstr (c1->c_text, c1->c_flags);
1307 putstr ("\n", c1->c_flags);
1308 return;
1309 }
1310
1311 if (c1->c_nfs && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
1312 mcomp_format (c1, c2);
1313
1314 if (c1->c_flags & CENTER) {
1315 count = (c1->c_width ? c1->c_width : global.c_width)
1316 - c1->c_offset - strlen (c2->c_text);
1317 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
1318 count -= strlen (c1->c_text ? c1->c_text : c1->c_name) + 2;
1319 lm = c1->c_offset + (count / 2);
1320 } else {
1321 if (c1->c_offset)
1322 lm = c1->c_offset;
1323 }
1324
1325 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
1326 if (c1->c_flags & UPPERCASE) /* uppercase component also */
1327 for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
1328 if (islower (*cp))
1329 *cp = toupper (*cp);
1330 putstr (c1->c_text ? c1->c_text : c1->c_name, c1->c_flags);
1331 if (flag != BODYCOMP) {
1332 putstr (": ", c1->c_flags);
1333 if (!(c1->c_flags & SPLIT))
1334 c1->c_flags |= HDROUTPUT;
1335
1336 cchdr++;
1337 if ((count = c1->c_cwidth -
1338 strlen (c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
1339 while (count--)
1340 putstr (" ", c1->c_flags);
1341 }
1342 else
1343 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
1344 }
1345
1346 if (flag == TWOCOMP
1347 && !(c2->c_flags & HDROUTPUT)
1348 && !(c2->c_flags & NOCOMPONENT)) {
1349 if (c1->c_flags & UPPERCASE)
1350 for (cp = c2->c_name; *cp; cp++)
1351 if (islower (*cp))
1352 *cp = toupper (*cp);
1353 putstr (c2->c_name, c1->c_flags);
1354 putstr (": ", c1->c_flags);
1355 if (!(c1->c_flags & SPLIT))
1356 c2->c_flags |= HDROUTPUT;
1357
1358 cchdr++;
1359 if ((count = c1->c_cwidth - strlen (c2->c_name) - 2) > 0)
1360 while (count--)
1361 putstr (" ", c1->c_flags);
1362 }
1363 if (c1->c_flags & UPPERCASE)
1364 for (cp = c2->c_text; *cp; cp++)
1365 if (islower (*cp))
1366 *cp = toupper (*cp);
1367
1368 count = 0;
1369 if (cchdr) {
1370 if (flag == TWOCOMP)
1371 count = (c1->c_cwidth >= 0) ? c1->c_cwidth
1372 : (int) strlen (c2->c_name) + 2;
1373 else
1374 count = (c1->c_cwidth >= 0) ? (size_t) c1->c_cwidth
1375 : strlen (c1->c_text ? c1->c_text : c1->c_name) + 2;
1376 }
1377 count += c1->c_offset;
1378
1379 if ((cp = oneline (c2->c_text, c1->c_flags)))
1380 putstr(cp, c1->c_flags);
1381 if (term == '\n')
1382 putstr ("\n", c1->c_flags);
1383 while ((cp = oneline (c2->c_text, c1->c_flags))) {
1384 lm = count;
1385 if (flag == BODYCOMP
1386 && !(c1->c_flags & NOCOMPONENT))
1387 putstr (c1->c_text ? c1->c_text : c1->c_name, c1->c_flags);
1388 if (*cp)
1389 putstr (cp, c1->c_flags);
1390 if (term == '\n')
1391 putstr ("\n", c1->c_flags);
1392 }
1393 if (flag == BODYCOMP && term == '\n')
1394 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
1395 }
1396
1397
1398 static char *
1399 oneline (char *stuff, long flags)
1400 {
1401 int spc;
1402 char *cp, *ret;
1403
1404 if (onelp == NULL)
1405 onelp = stuff;
1406 if (*onelp == 0)
1407 return (onelp = NULL);
1408
1409 ret = onelp;
1410 term = 0;
1411 if (flags & COMPRESS) {
1412 for (spc = 1, cp = ret; *onelp; onelp++)
1413 if (isspace (*onelp)) {
1414 if (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT))) {
1415 term = '\n';
1416 *onelp++ = 0;
1417 break;
1418 }
1419 else
1420 if (!spc) {
1421 *cp++ = ' ';
1422 spc++;
1423 }
1424 }
1425 else {
1426 *cp++ = *onelp;
1427 spc = 0;
1428 }
1429
1430 *cp = 0;
1431 }
1432 else {
1433 while (*onelp && *onelp != '\n')
1434 onelp++;
1435 if (*onelp == '\n') {
1436 term = '\n';
1437 *onelp++ = 0;
1438 }
1439 if (flags & LEFTADJUST)
1440 while (*ret == ' ' || *ret == '\t')
1441 ret++;
1442 }
1443 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1444 term = 0;
1445
1446 return ret;
1447 }
1448
1449
1450 static void
1451 putstr (char *string, long flags)
1452 {
1453 if (!column && lm > 0) {
1454 while (lm > 0)
1455 if (lm >= 8) {
1456 putch ('\t', flags);
1457 lm -= 8;
1458 }
1459 else {
1460 putch (' ', flags);
1461 lm--;
1462 }
1463 }
1464 lm = 0;
1465 while (*string)
1466 putch (*string++, flags);
1467 }
1468
1469
1470 static void
1471 putch (char ch, long flags)
1472 {
1473 char buf[BUFSIZ];
1474
1475 if (llim == 0)
1476 return;
1477
1478 switch (ch) {
1479 case '\n':
1480 if (llim > 0)
1481 llim--;
1482 column = 0;
1483 row++;
1484 if (ontty != ISTTY || row != global.c_length)
1485 break;
1486 if (global.c_flags & BELL)
1487 putchar ('\007');
1488 fflush (stdout);
1489 buf[0] = 0;
1490 read (fileno (stdout), buf, sizeof(buf));
1491 if (strchr(buf, '\n')) {
1492 if (global.c_flags & CLEARSCR)
1493 clear_screen ();
1494 row = 0;
1495 } else {
1496 putchar ('\n');
1497 row = global.c_length / 3;
1498 }
1499 return;
1500
1501 case '\t':
1502 column |= 07;
1503 column++;
1504 break;
1505
1506 case '\b':
1507 column--;
1508 break;
1509
1510 case '\r':
1511 column = 0;
1512 break;
1513
1514 default:
1515 /*
1516 * If we are forwarding this message, and the first
1517 * column contains a dash, then add a dash and a space.
1518 */
1519 if (column == 0 && forwflg && (dashstuff >= 0) && ch == '-') {
1520 putchar ('-');
1521 putchar (' ');
1522 }
1523 if (ch >= ' ')
1524 column++;
1525 break;
1526 }
1527
1528 if (column >= wid && (flags & NOWRAP) == 0) {
1529 putch ('\n', flags);
1530 if (ovoff > 0)
1531 lm = ovoff;
1532 putstr (ovtxt ? ovtxt : "", flags);
1533 putch (ch, flags);
1534 return;
1535 }
1536
1537 putchar (ch);
1538 }
1539
1540
1541 static void
1542 intrser (int i)
1543 {
1544 NMH_UNUSED (i);
1545
1546 discard (stdout);
1547 putchar ('\n');
1548 longjmp (env, DONE);
1549 }
1550
1551
1552 static void
1553 pipeser (int i)
1554 {
1555 NMH_UNUSED (i);
1556
1557 done (NOTOK);
1558 }
1559
1560
1561 static void
1562 quitser (int i)
1563 {
1564 NMH_UNUSED (i);
1565
1566 putchar ('\n');
1567 fflush (stdout);
1568 done (NOTOK);
1569 }
1570
1571
1572 int
1573 mhlsbr (int argc, char **argv, FILE *(*action)())
1574 {
1575 SIGNAL_HANDLER istat = NULL, pstat = NULL, qstat = NULL;
1576 char *cp = NULL;
1577 struct mcomp *c1;
1578 struct arglist *a, *a2;
1579
1580 switch (setjmp (mhlenv)) {
1581 case OK:
1582 cp = invo_name;
1583 sleepsw = 0; /* XXX */
1584 bellflg = clearflg = forwflg = forwall = exitstat = 0;
1585 digest = NULL;
1586 ontty = NOTTY;
1587 mhl_action = action;
1588
1589 /*
1590 * If signal is at default action, then start ignoring
1591 * it, else let it set to its current action.
1592 */
1593 if ((istat = SIGNAL (SIGINT, SIG_IGN)) != SIG_DFL)
1594 SIGNAL (SIGINT, istat);
1595 if ((qstat = SIGNAL (SIGQUIT, SIG_IGN)) != SIG_DFL)
1596 SIGNAL (SIGQUIT, qstat);
1597 pstat = SIGNAL (SIGPIPE, pipeser);
1598 mhl (argc, argv); /* FALL THROUGH! */
1599
1600 default:
1601 SIGNAL (SIGINT, istat);
1602 SIGNAL (SIGQUIT, qstat);
1603 SIGNAL (SIGPIPE, SIG_IGN);/* should probably change to block instead */
1604 if (ontty == PITTY)
1605 m_pclose ();
1606 SIGNAL (SIGPIPE, pstat);
1607 invo_name = cp;
1608 if (holder.c_text) {
1609 free (holder.c_text);
1610 holder.c_text = NULL;
1611 }
1612 free_queue (&msghd, &msgtl);
1613 for (c1 = fmthd; c1; c1 = c1->c_next)
1614 c1->c_flags &= ~HDROUTPUT;
1615
1616 a = arglist_head;
1617 while (a) {
1618 if (a->a_nfs)
1619 free(a->a_nfs);
1620 a2 = a->a_next;
1621 free(a);
1622 a = a2;
1623 }
1624 return exitstat;
1625 }
1626 }
1627
1628 #undef adios
1629 #undef done
1630
1631 static void
1632 mhladios (char *what, char *fmt, ...)
1633 {
1634 va_list ap;
1635
1636 va_start(ap, fmt);
1637 advertise (what, NULL, fmt, ap);
1638 va_end(ap);
1639 mhldone (1);
1640 }
1641
1642
1643 static void
1644 mhldone (int status)
1645 {
1646 exitstat = status;
1647 if (mhl_action)
1648 longjmp (mhlenv, DONE);
1649 else
1650 done (exitstat);
1651 }
1652
1653
1654 static int m_pid = NOTOK;
1655 static int sd = NOTOK;
1656
1657 static void
1658 m_popen (char *name)
1659 {
1660 int pd[2];
1661
1662 if (mhl_action && (sd = dup (fileno (stdout))) == NOTOK)
1663 adios ("standard output", "unable to dup()");
1664
1665 if (pipe (pd) == NOTOK)
1666 adios ("pipe", "unable to");
1667
1668 switch (m_pid = vfork()) {
1669 case NOTOK:
1670 adios ("fork", "unable to");
1671
1672 case OK:
1673 SIGNAL (SIGINT, SIG_DFL);
1674 SIGNAL (SIGQUIT, SIG_DFL);
1675
1676 close (pd[1]);
1677 if (pd[0] != fileno (stdin)) {
1678 dup2 (pd[0], fileno (stdin));
1679 close (pd[0]);
1680 }
1681 execlp (name, r1bindex (name, '/'), NULL);
1682 fprintf (stderr, "unable to exec ");
1683 perror (name);
1684 _exit (-1);
1685
1686 default:
1687 close (pd[0]);
1688 if (pd[1] != fileno (stdout)) {
1689 dup2 (pd[1], fileno (stdout));
1690 close (pd[1]);
1691 }
1692 }
1693 }
1694
1695
1696 void
1697 m_pclose (void)
1698 {
1699 if (m_pid == NOTOK)
1700 return;
1701
1702 if (sd != NOTOK) {
1703 fflush (stdout);
1704 if (dup2 (sd, fileno (stdout)) == NOTOK)
1705 adios ("standard output", "unable to dup2()");
1706
1707 clearerr (stdout);
1708 close (sd);
1709 sd = NOTOK;
1710 }
1711 else
1712 fclose (stdout);
1713
1714 pidwait (m_pid, OK);
1715 m_pid = NOTOK;
1716 }
1717
1718
1719 /*
1720 * Compile a format string used by the formatfield option and save it
1721 * for later.
1722 *
1723 * We will want the {text} (and possibly {error}) components for later,
1724 * so look for them and save them if we find them.
1725 */
1726
1727 static void
1728 compile_formatfield(struct mcomp *c1)
1729 {
1730 fmt_compile(c1->c_nfs, &c1->c_fmt, 1);
1731
1732 /*
1733 * As a note to myself and any other poor bastard who is looking through
1734 * this code in the future ....
1735 *
1736 * When the format hash table is reset later on (as it almost certainly
1737 * will be), there will still be references to these components in the
1738 * compiled format instructions. Thus these component references will
1739 * be free'd when the format instructions are free'd (by fmt_free()).
1740 *
1741 * So, in other words ... don't go free'ing them yourself!
1742 */
1743
1744 c1->c_c_text = fmt_findcomp("text");
1745 c1->c_c_error = fmt_findcomp("error");
1746 }
1747
1748 /*
1749 * Compile all of the arguments for our format list.
1750 *
1751 * Iterate through the linked list of format strings and compile them.
1752 * Note that we reset the format hash table before we start, but we do NOT
1753 * reset it between calls to fmt_compile().
1754 *
1755 */
1756
1757 static void
1758 compile_filterargs (void)
1759 {
1760 struct arglist *arg = arglist_head;
1761 struct comp *cptr;
1762 char **ap;
1763
1764 fmt_free(NULL, 1);
1765
1766 while (arg) {
1767 fmt_compile(arg->a_nfs, &arg->a_fmt, 0);
1768 arg = arg->a_next;
1769 }
1770
1771 /*
1772 * Search through and mark any components that are address components
1773 */
1774
1775 for (ap = addrcomps; *ap; ap++) {
1776 cptr = fmt_findcomp (*ap);
1777 if (cptr)
1778 cptr->c_type |= CT_ADDR;
1779 }
1780 }
1781
1782 /*
1783 * Filter the body of a message through a specified format program
1784 */
1785
1786 static void
1787 filterbody (struct mcomp *c1, char *buf, int bufsz, int state, FILE *fp)
1788 {
1789 struct mcomp holder;
1790 char name[NAMESZ];
1791 int fdinput[2], fdoutput[2], waitstat;
1792 ssize_t cc;
1793 pid_t writerpid, filterpid;
1794
1795 /*
1796 * Create pipes so we can communicate with our filter process.
1797 */
1798
1799 if (pipe(fdinput) < 0) {
1800 adios(NULL, "Unable to create input pipe");
1801 }
1802
1803 if (pipe(fdoutput) < 0) {
1804 adios(NULL, "Unable to create output pipe");
1805 }
1806
1807 /*
1808 * Here's what we're doing to do.
1809 *
1810 * - Fork ourselves and start writing data to the write side of the
1811 * input pipe (fdinput[1]).
1812 *
1813 * - Fork and exec our filter program. We set the standard input of
1814 * our filter program to be the read side of our input pipe (fdinput[0]).
1815 * Standard output is set to the write side of our output pipe
1816 * (fdoutput[1]).
1817 *
1818 * - We read from the read side of the output pipe (fdoutput[0]).
1819 *
1820 * We're forking because that's the simplest way to prevent any deadlocks.
1821 * (without doing something like switching to non-blocking I/O and using
1822 * select or poll, and I'm not interested in doing that).
1823 */
1824
1825 switch (writerpid = fork()) {
1826 case 0:
1827 /*
1828 * Our child process - just write to the filter input (fdinput[1]).
1829 * Close all other descriptors that we don't need.
1830 */
1831
1832 close(fdinput[0]);
1833 close(fdoutput[0]);
1834 close(fdoutput[1]);
1835
1836 /*
1837 * Call m_getfld() until we're no longer in the BODY state
1838 */
1839
1840 while (state == BODY) {
1841 write(fdinput[1], buf, strlen(buf));
1842 state = m_getfld(state, name, buf, bufsz, fp);
1843 }
1844
1845 /*
1846 * We should be done; time to exit.
1847 */
1848
1849 close(fdinput[1]);
1850 /*
1851 * Make sure we call _exit(), otherwise we may flush out the stdio
1852 * buffers that we have duplicated from the parent.
1853 */
1854 _exit(0);
1855 break;
1856 case -1:
1857 adios(NULL, "Unable to fork for filter writer process");
1858 break;
1859 }
1860
1861 /*
1862 * Fork and exec() our filter program, after redirecting standard in
1863 * and standard out appropriately.
1864 */
1865
1866 switch (filterpid = fork()) {
1867 char **args;
1868 struct arglist *a;
1869 int i, dat[5], s;
1870
1871 case 0:
1872 /*
1873 * Allocate an argument array for us
1874 */
1875
1876 args = (char **) mh_xmalloc((filter_nargs + 2) * sizeof(char *));
1877 args[0] = formatproc;
1878 args[filter_nargs + 1] = NULL;
1879 dat[0] = 0;
1880 dat[1] = 0;
1881 dat[2] = 0;
1882 dat[3] = BUFSIZ;
1883 dat[4] = 0;
1884
1885 /*
1886 * Pull out each argument and scan them.
1887 */
1888
1889 for (a = arglist_head, i = 1; a != NULL; a = a->a_next, i++) {
1890 args[i] = mh_xmalloc(BUFSIZ);
1891 fmt_scan(a->a_fmt, args[i], BUFSIZ - 1, BUFSIZ, dat);
1892 /*
1893 * fmt_scan likes to put a trailing newline at the end of the
1894 * format string. If we have one, get rid of it.
1895 */
1896 s = strlen(args[i]);
1897 if (args[i][s - 1] == '\n')
1898 args[i][s - 1] = '\0';
1899
1900 if (mhldebug)
1901 fprintf(stderr, "filterarg: fmt=\"%s\", output=\"%s\"\n",
1902 a->a_nfs, args[i]);
1903 }
1904
1905 if (dup2(fdinput[0], STDIN_FILENO) < 0) {
1906 adios("formatproc", "Unable to dup2() standard input");
1907 }
1908 if (dup2(fdoutput[1], STDOUT_FILENO) < 0) {
1909 adios("formatproc", "Unable to dup2() standard output");
1910 }
1911
1912 /*
1913 * Close everything (especially the old input and output
1914 * descriptors, since they've been dup'd to stdin and stdout),
1915 * and exec the formatproc.
1916 */
1917
1918 close(fdinput[0]);
1919 close(fdinput[1]);
1920 close(fdoutput[0]);
1921 close(fdoutput[1]);
1922
1923 execvp(formatproc, args);
1924
1925 adios(formatproc, "Unable to execute filter");
1926
1927 break;
1928
1929 case -1:
1930 adios(NULL, "Unable to fork format program");
1931 }
1932
1933 /*
1934 * Close everything except our reader (fdoutput[0]);
1935 */
1936
1937 close(fdinput[0]);
1938 close(fdinput[1]);
1939 close(fdoutput[1]);
1940
1941 /*
1942 * As we read in this data, send it to putcomp
1943 */
1944
1945 holder.c_text = buf;
1946
1947 while ((cc = read(fdoutput[0], buf, bufsz - 1)) > 0) {
1948 buf[cc] = '\0';
1949 putcomp(c1, &holder, BODYCOMP);
1950 }
1951
1952 if (cc < 0) {
1953 adios(NULL, "reading from formatproc");
1954 }
1955
1956 /*
1957 * See if we got any errors along the way. I'm a little leery of calling
1958 * waitpid() without WNOHANG, but it seems to be the most correct solution.
1959 */
1960
1961 if (waitpid(filterpid, &waitstat, 0) < 0) {
1962 if (errno != ECHILD) {
1963 adios("filterproc", "Unable to determine status");
1964 }
1965 } else {
1966 if (! (WIFEXITED(waitstat) && WEXITSTATUS(waitstat) == 0)) {
1967 pidstatus(waitstat, stderr, "filterproc");
1968 }
1969 }
1970
1971 if (waitpid(writerpid, &waitstat, 0) < 0) {
1972 if (errno != ECHILD) {
1973 adios("writer process", "Unable to determine status");
1974 done(1);
1975 }
1976 } else {
1977 if (! (WIFEXITED(waitstat) && WEXITSTATUS(waitstat) == 0)) {
1978 pidstatus(waitstat, stderr, "writer process");
1979 done(1);
1980 }
1981 }
1982
1983 close(fdoutput[0]);
1984 }
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