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Remove unused NCWD and NPWD #defines.
[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 <sys/types.h>
18
19 /*
20 * MAJOR BUG:
21 * for a component containing addresses, ADDRFMT, if COMPRESS is also
22 * set, then addresses get split wrong (not at the spaces between commas).
23 * To fix this correctly, putstr() should know about "atomic" strings that
24 * must NOT be broken across lines. That's too difficult for right now
25 * (it turns out that there are a number of degernate cases), so in
26 * oneline(), instead of
27 *
28 * (*onelp == '\n' && !onelp[1])
29 *
30 * being a terminating condition,
31 *
32 * (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
33 *
34 * is used instead. This cuts the line prematurely, and gives us a much
35 * better chance of getting things right.
36 */
37
38 #define ONECOMP 0
39 #define TWOCOMP 1
40 #define BODYCOMP 2
41
42 #define QUOTE '\\'
43
44 #define MHL_SWITCHES \
45 X("bell", 0, BELLSW) \
46 X("nobell", 0, NBELLSW) \
47 X("clear", 0, CLRSW) \
48 X("noclear", 0, NCLRSW) \
49 X("folder +folder", 0, FOLDSW) \
50 X("form formfile", 0, FORMSW) \
51 X("moreproc program", 0, PROGSW) \
52 X("nomoreproc", 0, NPROGSW) \
53 X("length lines", 0, LENSW) \
54 X("width columns", 0, WIDTHSW) \
55 X("sleep seconds", 0, SLEEPSW) \
56 X("dashstuffing", -12, BITSTUFFSW) /* interface from forw */ \
57 X("nodashstuffing", -14, NBITSTUFFSW) /* interface from forw */ \
58 X("version", 0, VERSIONSW) \
59 X("help", 0, HELPSW) \
60 X("forward", -7, FORW1SW) /* interface from forw */ \
61 X("forwall", -7, FORW2SW) /* interface from forw */ \
62 X("digest list", -6, DGSTSW) \
63 X("volume number", -6, VOLUMSW) \
64 X("issue number", -5, ISSUESW) \
65 X("nobody", -6, NBODYSW) \
66 X("fmtproc program", 0, FMTPROCSW) \
67 X("nofmtproc", 0, NFMTPROCSW) \
68
69 #define X(sw, minchars, id) id,
70 DEFINE_SWITCH_ENUM(MHL);
71 #undef X
72
73 #define X(sw, minchars, id) { sw, minchars, id },
74 DEFINE_SWITCH_ARRAY(MHL, mhlswitches);
75 #undef X
76
77 #define NOCOMPONENT 0x000001 /* don't show component name */
78 #define UPPERCASE 0x000002 /* display in all upper case */
79 #define CENTER 0x000004 /* center line */
80 #define CLEARTEXT 0x000008 /* cleartext */
81 #define EXTRA 0x000010 /* an "extra" component */
82 #define HDROUTPUT 0x000020 /* already output */
83 #define CLEARSCR 0x000040 /* clear screen */
84 #define LEFTADJUST 0x000080 /* left justify multiple lines */
85 #define COMPRESS 0x000100 /* compress text */
86 #define ADDRFMT 0x000200 /* contains addresses */
87 #define BELL 0x000400 /* sound bell at EOP */
88 #define DATEFMT 0x000800 /* contains dates */
89 #define FORMAT 0x001000 /* parse address/date/RFC-2047 field */
90 #define INIT 0x002000 /* initialize component */
91 #define RTRIM 0x004000 /* trim trailing whitespace */
92 #define SPLIT 0x010000 /* split headers (don't concatenate) */
93 #define NONEWLINE 0x020000 /* don't write trailing newline */
94 #define NOWRAP 0x040000 /* Don't wrap lines ever */
95 #define FMTFILTER 0x080000 /* Filter through format filter */
96 #define LBITS "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07CLEARSCR\010LEFTADJUST\011COMPRESS\012ADDRFMT\013BELL\014DATEFMT\015FORMAT\016INIT\017RTRIM\021SPLIT\022NONEWLINE\023NOWRAP\024FMTFILTER"
97 #define GFLAGS (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT | NOWRAP)
98
99 /*
100 * A format string to be used as a command-line argument to the body
101 * format filter.
102 */
103
104 struct arglist {
105 struct format *a_fmt;
106 char *a_nfs;
107 struct arglist *a_next;
108 };
109
110 /*
111 * Linked list of command line arguments for the body format filter. This
112 * USED to be in "struct mcomp", but the format API got cleaned up and even
113 * though it reduced the code we had to do, it make things more complicated
114 * for us. Specifically:
115 *
116 * - The interface to the hash table has been cleaned up, which means the
117 * rooting around in the hash table is no longer necessary (yay!). But
118 * this ALSO means that we have to make sure that we call our format
119 * compilation routines before we process the message, because the
120 * components need to be visible in the hash table so we can save them for
121 * later. So we moved them out of "mcomp" and now compile them right before
122 * header processing starts.
123 * - We also use format strings to handle other components in the mhl
124 * configuration (using "formatfield" and "decode"), but here life
125 * gets complicated: they aren't dealt with in the normal way. Instead
126 * of referring to a component like {from}, each component is processed
127 * using the special {text} component. But these format strings need to be
128 * compiled BEFORE we compile the format arguments; in the previous
129 * implementation they were compiled and scanned as the headers were
130 * read, and that would reset the hash table that we need to populate
131 * the components used by the body format filter. So we are compiling
132 * the formatfield component strings ahead of time and then scanning them
133 * later.
134 *
135 * Okay, fine ... this was broken before. But you know what? Fixing this
136 * the right way will make things easier down the road.
137 *
138 * One side-effect to this change: format strings are now compiled only once
139 * for components specified with "formatfield", but they are compiled for
140 * every message for format arguments.
141 */
142
143 static struct arglist *arglist_head;
144 static struct arglist *arglist_tail;
145 static int filter_nargs = 0;
146
147 /*
148 * Flags/options for each component
149 */
150
151 struct mcomp {
152 char *c_name; /* component name */
153 char *c_text; /* component text */
154 char *c_ovtxt; /* text overflow indicator */
155 char *c_nfs; /* iff FORMAT */
156 struct format *c_fmt; /* .. */
157 struct comp *c_c_text; /* Ref to {text} in FORMAT */
158 struct comp *c_c_error; /* Ref to {error} */
159 int c_offset; /* left margin indentation */
160 int c_ovoff; /* overflow indentation */
161 int c_width; /* width of field */
162 int c_cwidth; /* width of component */
163 int c_length; /* length in lines */
164 long c_flags;
165 struct mcomp *c_next;
166 };
167
168 static struct mcomp *msghd = NULL;
169 static struct mcomp *msgtl = NULL;
170 static struct mcomp *fmthd = NULL;
171 static struct mcomp *fmttl = NULL;
172
173 static struct mcomp global = {
174 NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, -1, 80, -1, 40, BELL, NULL
175 };
176
177 static struct mcomp holder = {
178 NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0, NOCOMPONENT, NULL
179 };
180
181 struct pair {
182 char *p_name;
183 long p_flags;
184 };
185
186 static struct pair pairs[] = {
187 { "Date", DATEFMT },
188 { "From", ADDRFMT },
189 { "Sender", ADDRFMT },
190 { "Reply-To", ADDRFMT },
191 { "To", ADDRFMT },
192 { "cc", ADDRFMT },
193 { "Bcc", ADDRFMT },
194 { "Resent-Date", DATEFMT },
195 { "Resent-From", ADDRFMT },
196 { "Resent-Sender", ADDRFMT },
197 { "Resent-Reply-To", ADDRFMT },
198 { "Resent-To", ADDRFMT },
199 { "Resent-cc", ADDRFMT },
200 { "Resent-Bcc", ADDRFMT },
201 { NULL, 0 }
202 };
203
204 struct triple {
205 char *t_name;
206 long t_on;
207 long t_off;
208 };
209
210 static struct triple triples[] = {
211 { "nocomponent", NOCOMPONENT, 0 },
212 { "uppercase", UPPERCASE, 0 },
213 { "nouppercase", 0, UPPERCASE },
214 { "center", CENTER, 0 },
215 { "nocenter", 0, CENTER },
216 { "clearscreen", CLEARSCR, 0 },
217 { "noclearscreen", 0, CLEARSCR },
218 { "noclear", 0, CLEARSCR },
219 { "leftadjust", LEFTADJUST, 0 },
220 { "noleftadjust", 0, LEFTADJUST },
221 { "compress", COMPRESS, 0 },
222 { "nocompress", 0, COMPRESS },
223 { "split", SPLIT, 0 },
224 { "nosplit", 0, SPLIT },
225 { "rtrim", RTRIM, 0 },
226 { "nortrim", 0, RTRIM },
227 { "addrfield", ADDRFMT, DATEFMT },
228 { "bell", BELL, 0 },
229 { "nobell", 0, BELL },
230 { "datefield", DATEFMT, ADDRFMT },
231 { "newline", 0, NONEWLINE },
232 { "nonewline", NONEWLINE, 0 },
233 { "wrap", 0, NOWRAP },
234 { "nowrap", NOWRAP, 0 },
235 { "format", FMTFILTER, 0 },
236 { "noformat", 0, FMTFILTER },
237 { NULL, 0, 0 }
238 };
239
240 static char *addrcomps[] = {
241 "from",
242 "sender",
243 "reply-to",
244 "to",
245 "cc",
246 "bcc",
247 "resent-from",
248 "resent-sender",
249 "resent-reply-to",
250 "resent-to",
251 "resent-cc",
252 "resent-bcc",
253 NULL
254 };
255
256
257 static int bellflg = 0;
258 static int clearflg = 0;
259 static int dashstuff = 0;
260 static int dobody = 1;
261 static int forwflg = 0;
262 static int forwall = 0;
263
264 static int sleepsw = NOTOK;
265
266 static char *digest = NULL;
267 static int volume = 0;
268 static int issue = 0;
269
270 static int exitstat = 0;
271 static int mhldebug = 0;
272
273 static int filesize = 0;
274
275 #define PITTY (-1)
276 #define NOTTY 0
277 #define ISTTY 1
278 static int ontty = NOTTY;
279
280 static int row;
281 static unsigned int column;
282
283 static int lm;
284 static int llim;
285 static int ovoff;
286 static int term;
287 static unsigned int wid;
288
289 static char *ovtxt;
290
291 static char *onelp;
292
293 static char *parptr;
294
295 static int num_ignores = 0;
296 static char *ignores[MAXARGS];
297
298 static jmp_buf env;
299 static jmp_buf mhlenv;
300
301 static char delim3[] = /* from forw.c */
302 "\n----------------------------------------------------------------------\n\n";
303 static char delim4[] = "\n------------------------------\n\n";
304
305 static FILE *(*mhl_action) () = (FILE *(*) ()) 0;
306
307 /*
308 * Redefine a couple of functions.
309 * These are undefined later in the code.
310 */
311 #define adios mhladios
312 #define done mhldone
313
314 /*
315 * prototypes
316 */
317 static void mhl_format (char *, int, int);
318 static int evalvar (struct mcomp *);
319 static int ptoi (char *, int *);
320 static int ptos (char *, char **);
321 static char *parse (void);
322 static void process (char *, char *, int, int);
323 static void mhlfile (FILE *, char *, int, int);
324 static int mcomp_flags (char *);
325 static char *mcomp_add (long, char *, char *);
326 static void mcomp_format (struct mcomp *, struct mcomp *);
327 static struct mcomp *add_queue (struct mcomp **, struct mcomp **, char *, char *, int);
328 static void free_queue (struct mcomp **, struct mcomp **);
329 static void putcomp (struct mcomp *, struct mcomp *, int);
330 static char *oneline (char *, long);
331 static void putstr (char *, long);
332 static void putch (char, long);
333 static void intrser (int);
334 static void pipeser (int);
335 static void quitser (int);
336 static void mhladios (char *, char *, ...);
337 static void mhldone (int);
338 static void filterbody (struct mcomp *, char *, int, int, FILE *,
339 m_getfld_state_t);
340 static void compile_formatfield(struct mcomp *);
341 static void compile_filterargs (void);
342
343
344 int
345 mhl (int argc, char **argv)
346 {
347 int length = 0, nomore = 0;
348 unsigned int i, vecp = 0;
349 int width = 0;
350 char *cp, *folder = NULL, *form = NULL;
351 char buf[BUFSIZ], *files[MAXARGS];
352 char **argp, **arguments;
353
354 /* Need this if called from main() of show(1). */
355 invo_name = r1bindex (argv[0], '/');
356
357 arguments = getarguments (invo_name, argc, argv, 1);
358 argp = arguments;
359
360 if ((cp = getenv ("MHLDEBUG")) && *cp)
361 mhldebug++;
362
363 while ((cp = *argp++)) {
364 if (*cp == '-') {
365 switch (smatch (++cp, mhlswitches)) {
366 case AMBIGSW:
367 ambigsw (cp, mhlswitches);
368 done (1);
369 case UNKWNSW:
370 adios (NULL, "-%s unknown\n", cp);
371
372 case HELPSW:
373 snprintf (buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
374 print_help (buf, mhlswitches, 1);
375 done (0);
376 case VERSIONSW:
377 print_version(invo_name);
378 done (0);
379
380 case BELLSW:
381 bellflg = 1;
382 continue;
383 case NBELLSW:
384 bellflg = -1;
385 continue;
386
387 case CLRSW:
388 clearflg = 1;
389 continue;
390 case NCLRSW:
391 clearflg = -1;
392 continue;
393
394 case FOLDSW:
395 if (!(folder = *argp++) || *folder == '-')
396 adios (NULL, "missing argument to %s", argp[-2]);
397 continue;
398 case FORMSW:
399 if (!(form = *argp++) || *form == '-')
400 adios (NULL, "missing argument to %s", argp[-2]);
401 continue;
402
403 case SLEEPSW:
404 if (!(cp = *argp++) || *cp == '-')
405 adios (NULL, "missing argument to %s", argp[-2]);
406 else
407 sleepsw = atoi (cp);/* ZERO ok! */
408 continue;
409
410 case PROGSW:
411 if (!(moreproc = *argp++) || *moreproc == '-')
412 adios (NULL, "missing argument to %s", argp[-2]);
413 continue;
414 case NPROGSW:
415 nomore++;
416 continue;
417
418 case FMTPROCSW:
419 if (!(formatproc = *argp++) || *formatproc == '-')
420 adios (NULL, "missing argument to %s", argp[-2]);
421 continue;
422 case NFMTPROCSW:
423 formatproc = NULL;
424 continue;
425
426 case LENSW:
427 if (!(cp = *argp++) || *cp == '-')
428 adios (NULL, "missing argument to %s", argp[-2]);
429 else if ((length = atoi (cp)) < 1)
430 adios (NULL, "bad argument %s %s", argp[-2], cp);
431 continue;
432 case WIDTHSW:
433 if (!(cp = *argp++) || *cp == '-')
434 adios (NULL, "missing argument to %s", argp[-2]);
435 else if ((width = atoi (cp)) < 1)
436 adios (NULL, "bad argument %s %s", argp[-2], cp);
437 continue;
438
439 case DGSTSW:
440 if (!(digest = *argp++) || *digest == '-')
441 adios (NULL, "missing argument to %s", argp[-2]);
442 continue;
443 case ISSUESW:
444 if (!(cp = *argp++) || *cp == '-')
445 adios (NULL, "missing argument to %s", argp[-2]);
446 else if ((issue = atoi (cp)) < 1)
447 adios (NULL, "bad argument %s %s", argp[-2], cp);
448 continue;
449 case VOLUMSW:
450 if (!(cp = *argp++) || *cp == '-')
451 adios (NULL, "missing argument to %s", argp[-2]);
452 else if ((volume = atoi (cp)) < 1)
453 adios (NULL, "bad argument %s %s", argp[-2], cp);
454 continue;
455
456 case FORW2SW:
457 forwall++; /* fall */
458 case FORW1SW:
459 forwflg++;
460 clearflg = -1;/* XXX */
461 continue;
462
463 case BITSTUFFSW:
464 dashstuff = 1; /* trinary logic */
465 continue;
466 case NBITSTUFFSW:
467 dashstuff = -1; /* trinary logic */
468 continue;
469
470 case NBODYSW:
471 dobody = 0;
472 continue;
473 }
474 }
475 files[vecp++] = cp;
476 }
477
478 if (!folder)
479 folder = getenv ("mhfolder");
480
481 if (isatty (fileno (stdout))) {
482 if (!nomore && moreproc && *moreproc != '\0') {
483 if (mhl_action) {
484 SIGNAL (SIGINT, SIG_IGN);
485 SIGNAL2 (SIGQUIT, quitser);
486 }
487 SIGNAL2 (SIGPIPE, pipeser);
488 m_popen (moreproc, mhl_action != NULL);
489 ontty = PITTY;
490 } else {
491 SIGNAL (SIGINT, SIG_IGN);
492 SIGNAL2 (SIGQUIT, quitser);
493 ontty = ISTTY;
494 }
495 } else {
496 ontty = NOTTY;
497 }
498
499 mhl_format (form ? form : mhlformat, length, width);
500
501 if (vecp == 0) {
502 process (folder, NULL, 1, vecp = 1);
503 } else {
504 for (i = 0; i < vecp; i++)
505 process (folder, files[i], i + 1, vecp);
506 }
507
508 if (forwall) {
509 if (digest) {
510 printf ("%s", delim4);
511 if (volume == 0) {
512 snprintf (buf, sizeof(buf), "End of %s Digest\n", digest);
513 } else {
514 snprintf (buf, sizeof(buf), "End of %s Digest [Volume %d Issue %d]\n",
515 digest, volume, issue);
516 }
517 i = strlen (buf);
518 for (cp = buf + i; i > 1; i--)
519 *cp++ = '*';
520 *cp++ = '\n';
521 *cp = 0;
522 printf ("%s", buf);
523 }
524 else
525 printf ("\n------- End of Forwarded Message%s\n",
526 vecp > 1 ? "s" : "");
527 }
528
529 fflush(stdout);
530 if(ferror(stdout)){
531 adios("output", "error writing");
532 }
533
534 if (clearflg > 0 && ontty == NOTTY)
535 nmh_clear_screen ();
536
537 if (ontty == PITTY)
538 m_pclose ();
539
540 return exitstat;
541 }
542
543
544 static void
545 mhl_format (char *file, int length, int width)
546 {
547 int i;
548 char *bp, **ip;
549 char *ap, name[NAMESZ];
550 struct mcomp *c1;
551 struct stat st;
552 FILE *fp;
553 static dev_t dev = 0;
554 static ino_t ino = 0;
555 static time_t mtime = 0;
556
557 if (fmthd != NULL) {
558 if (stat (etcpath (file), &st) != NOTOK
559 && mtime == st.st_mtime
560 && dev == st.st_dev
561 && ino == st.st_ino)
562 goto out;
563 free_queue (&fmthd, &fmttl);
564 }
565
566 if ((fp = fopen (etcpath (file), "r")) == NULL)
567 adios (file, "unable to open format file");
568
569 if (fstat (fileno (fp), &st) != NOTOK) {
570 mtime = st.st_mtime;
571 dev = st.st_dev;
572 ino = st.st_ino;
573 }
574
575 global.c_ovtxt = global.c_nfs = NULL;
576 global.c_fmt = NULL;
577 global.c_offset = 0;
578 global.c_ovoff = -1;
579 if ((i = sc_width ()) > 5)
580 global.c_width = i;
581 global.c_cwidth = -1;
582 if ((i = sc_length ()) > 5)
583 global.c_length = i - 1;
584 global.c_flags = BELL; /* BELL is default */
585 *(ip = ignores) = NULL;
586 filter_nargs = 0;
587
588 while (vfgets (fp, &ap) == OK) {
589 bp = ap;
590 if (*bp == ';')
591 continue;
592
593 TrimSuffixC(bp, '\n');
594
595 if (*bp == ':') {
596 (void) add_queue (&fmthd, &fmttl, NULL, bp + 1, CLEARTEXT);
597 continue;
598 }
599
600 parptr = bp;
601 strncpy (name, parse(), sizeof(name));
602 switch (*parptr) {
603 case '\0':
604 case ',':
605 case '=':
606 /*
607 * Split this list of fields to ignore, and copy
608 * it to the end of the current "ignores" list.
609 */
610 if (!strcasecmp (name, "ignores")) {
611 char **tmparray, **p;
612 int n = 0;
613
614 /* split the fields */
615 tmparray = brkstring (mh_xstrdup(++parptr), ",", NULL);
616
617 /* count number of fields split */
618 p = tmparray;
619 while (*p++)
620 n++;
621
622 /* copy pointers to split fields to ignores array */
623 ip = copyip (tmparray, ip, MAXARGS - num_ignores);
624 num_ignores += n;
625 continue;
626 }
627 parptr = bp;
628 while (*parptr) {
629 if (evalvar (&global))
630 adios (NULL, "format file syntax error: %s", bp);
631 if (*parptr)
632 parptr++;
633 }
634 continue;
635
636 case ':':
637 c1 = add_queue (&fmthd, &fmttl, name, NULL, INIT);
638 while (*parptr == ':' || *parptr == ',') {
639 parptr++;
640 if (evalvar (c1))
641 adios (NULL, "format file syntax error: %s", bp);
642 }
643 if (!c1->c_nfs && global.c_nfs) {
644 if (c1->c_flags & DATEFMT) {
645 if (global.c_flags & DATEFMT) {
646 c1->c_nfs = mh_xstrdup(global.c_nfs);
647 compile_formatfield(c1);
648 }
649 }
650 else
651 if (c1->c_flags & ADDRFMT) {
652 if (global.c_flags & ADDRFMT) {
653 c1->c_nfs = mh_xstrdup(global.c_nfs);
654 compile_formatfield(c1);
655 }
656 }
657 }
658 continue;
659
660 default:
661 adios (NULL, "format file syntax error: %s", bp);
662 }
663 }
664 fclose (fp);
665
666 if (mhldebug) {
667 for (c1 = fmthd; c1; c1 = c1->c_next) {
668 char buffer[BUFSIZ];
669
670 fprintf (stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n",
671 c1->c_name, c1->c_text, c1->c_ovtxt);
672 fprintf (stderr, "\tnfs=0x%x fmt=0x%x\n",
673 (unsigned int)(unsigned long) c1->c_nfs,
674 (unsigned int)(unsigned long) c1->c_fmt);
675 fprintf (stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d length=%d\n",
676 c1->c_offset, c1->c_ovoff, c1->c_width,
677 c1->c_cwidth, c1->c_length);
678 fprintf (stderr, "\tflags=%s\n",
679 snprintb (buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
680 }
681 }
682
683 out:
684 if (clearflg == 1) {
685 global.c_flags |= CLEARSCR;
686 } else {
687 if (clearflg == -1)
688 global.c_flags &= ~CLEARSCR;
689 }
690
691 switch (bellflg) { /* command line may override format file */
692 case 1:
693 global.c_flags |= BELL;
694 break;
695 case -1:
696 global.c_flags &= ~BELL;
697 break;
698 }
699
700 if (length)
701 global.c_length = length;
702 if (width)
703 global.c_width = width;
704 if (global.c_length < 5)
705 global.c_length = 10000;
706 if (global.c_width < 5)
707 global.c_width = 10000;
708 }
709
710
711 static int
712 evalvar (struct mcomp *c1)
713 {
714 char *cp, name[NAMESZ];
715 struct triple *ap;
716
717 if (!*parptr)
718 return 0;
719 strncpy (name, parse(), sizeof(name));
720
721 if (!strcasecmp (name, "component")) {
722 if (ptos (name, &c1->c_text))
723 return 1;
724 c1->c_flags &= ~NOCOMPONENT;
725 return 0;
726 }
727
728 if (!strcasecmp (name, "overflowtext"))
729 return ptos (name, &c1->c_ovtxt);
730
731 if (!strcasecmp (name, "formatfield")) {
732 if (ptos (name, &cp))
733 return 1;
734 c1->c_nfs = getcpy (new_fs (NULL, NULL, cp));
735 compile_formatfield(c1);
736 c1->c_flags |= FORMAT;
737 return 0;
738 }
739
740 if (!strcasecmp (name, "decode")) {
741 c1->c_nfs = getcpy (new_fs (NULL, NULL, "%(decode{text})"));
742 compile_formatfield(c1);
743 c1->c_flags |= FORMAT;
744 return 0;
745 }
746
747 if (!strcasecmp (name, "offset"))
748 return ptoi (name, &c1->c_offset);
749 if (!strcasecmp (name, "overflowoffset"))
750 return ptoi (name, &c1->c_ovoff);
751 if (!strcasecmp (name, "width"))
752 return ptoi (name, &c1->c_width);
753 if (!strcasecmp (name, "compwidth"))
754 return ptoi (name, &c1->c_cwidth);
755 if (!strcasecmp (name, "length"))
756 return ptoi (name, &c1->c_length);
757 if (!strcasecmp (name, "nodashstuffing"))
758 return (dashstuff = -1);
759
760 for (ap = triples; ap->t_name; ap++)
761 if (!strcasecmp (ap->t_name, name)) {
762 c1->c_flags |= ap->t_on;
763 c1->c_flags &= ~ap->t_off;
764 return 0;
765 }
766
767 if (!strcasecmp (name, "formatarg")) {
768 struct arglist *args;
769
770 if (ptos (name, &cp))
771 return 1;
772
773 if (! c1->c_name || strcasecmp (c1->c_name, "body")) {
774 advise (NULL, "format filters are currently only supported on "
775 "the \"body\" component");
776 return 1;
777 }
778
779 NEW0(args);
780
781 if (arglist_tail)
782 arglist_tail->a_next = args;
783
784 arglist_tail = args;
785
786 if (! arglist_head)
787 arglist_head = args;
788
789 args->a_nfs = getcpy (new_fs (NULL, NULL, cp));
790 filter_nargs++;
791
792 return 0;
793 }
794
795 return 1;
796 }
797
798
799 static int
800 ptoi (char *name, int *i)
801 {
802 char *cp;
803
804 if (*parptr++ != '=' || !*(cp = parse ())) {
805 advise (NULL, "missing argument to variable %s", name);
806 return 1;
807 }
808
809 *i = atoi (cp);
810 return 0;
811 }
812
813
814 static int
815 ptos (char *name, char **s)
816 {
817 char c, *cp;
818
819 if (*parptr++ != '=') {
820 advise (NULL, "missing argument to variable %s", name);
821 return 1;
822 }
823
824 if (*parptr != '"') {
825 for (cp = parptr;
826 *parptr && *parptr != ':' && *parptr != ',';
827 parptr++)
828 continue;
829 } else {
830 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
831 if (*parptr == QUOTE)
832 if (!*++parptr)
833 parptr--;
834 }
835 c = *parptr;
836 *parptr = 0;
837 *s = mh_xstrdup(cp);
838 if ((*parptr = c) == '"')
839 parptr++;
840 return 0;
841 }
842
843
844 static char *
845 parse (void)
846 {
847 int c;
848 char *cp;
849 static char result[NAMESZ];
850
851 for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
852 c = *parptr;
853 if (isalnum (c)
854 || c == '.'
855 || c == '-'
856 || c == '_'
857 || c =='['
858 || c == ']')
859 *cp++ = c;
860 else
861 break;
862 }
863 *cp = '\0';
864
865 return result;
866 }
867
868
869 /*
870 * Process one file/message
871 */
872
873 static void
874 process (char *folder, char *fname, int ofilen, int ofilec)
875 {
876 /* static to prevent "might be clobbered" warning from gcc 4.9.2: */
877 static char *cp;
878 static FILE *fp;
879 struct mcomp *c1;
880 struct stat st;
881 struct arglist *ap;
882 /* volatile to prevent "might be clobbered" warning from gcc: */
883 char *volatile fname2 = fname ? fname : "(stdin)";
884
885 cp = NULL;
886 fp = NULL;
887
888 switch (setjmp (env)) {
889 case OK:
890 if (fname) {
891 fp = mhl_action ? (*mhl_action) (fname) : fopen (fname, "r");
892 if (fp == NULL) {
893 advise (fname, "unable to open");
894 exitstat++;
895 return;
896 }
897 } else {
898 fp = stdin;
899 }
900 if (fstat(fileno(fp), &st) == 0) {
901 filesize = st.st_size;
902 } else {
903 filesize = 0;
904 }
905 cp = folder ? concat (folder, ":", fname2, NULL) : mh_xstrdup(fname2);
906 if (ontty != PITTY)
907 SIGNAL (SIGINT, intrser);
908 mhlfile (fp, cp, ofilen, ofilec); /* FALL THROUGH! */
909 free (cp);
910
911 for (ap = arglist_head; ap; ap = ap->a_next) {
912 fmt_free(ap->a_fmt, 0);
913 ap->a_fmt = NULL;
914 }
915
916 if (arglist_head)
917 fmt_free(NULL, 1);
918
919 default:
920 if (ontty != PITTY)
921 SIGNAL (SIGINT, SIG_IGN);
922 if (mhl_action == NULL && fp != stdin && fp != NULL)
923 fclose (fp);
924 mh_xfree(holder.c_text);
925 holder.c_text = NULL;
926 free_queue (&msghd, &msgtl);
927 for (c1 = fmthd; c1; c1 = c1->c_next)
928 c1->c_flags &= ~HDROUTPUT;
929 break;
930 }
931
932 }
933
934
935 static void
936 mhlfile (FILE *fp, char *mname, int ofilen, int ofilec)
937 {
938 int state, bucket;
939 struct mcomp *c1, *c2, *c3;
940 char **ip, name[NAMESZ], buf[BUFSIZ];
941 m_getfld_state_t gstate = 0;
942
943 compile_filterargs();
944
945 if (forwall) {
946 if (digest)
947 printf ("%s", ofilen == 1 ? delim3 : delim4);
948 else {
949 printf ("\n-------");
950 if (ofilen == 1)
951 printf (" Forwarded Message%s", ofilec > 1 ? "s" : "");
952 else
953 printf (" Message %d", ofilen);
954 printf ("\n\n");
955 }
956 } else {
957 switch (ontty) {
958 case PITTY:
959 if (ofilec > 1) {
960 if (ofilen > 1) {
961 if ((global.c_flags & CLEARSCR))
962 nmh_clear_screen ();
963 else
964 printf ("\n\n\n");
965 }
966 printf (">>> %s\n\n", mname);
967 }
968 break;
969
970 case ISTTY:
971 strncpy (buf, "\n", sizeof(buf));
972 if (ofilec > 1) {
973 if (SOprintf ("Press <return> to list \"%s\"...", mname)) {
974 if (ofilen > 1)
975 printf ("\n\n\n");
976 printf ("Press <return> to list \"%s\"...", mname);
977 }
978 fflush (stdout);
979 buf[0] = 0;
980 if (read (fileno (stdout), buf, sizeof(buf)) < 0) {
981 advise ("stdout", "read");
982 }
983 }
984 if (strchr(buf, '\n')) {
985 if ((global.c_flags & CLEARSCR))
986 nmh_clear_screen ();
987 }
988 else
989 putchar('\n');
990 break;
991
992 default:
993 if (ofilec > 1) {
994 if (ofilen > 1) {
995 printf ("\n\n\n");
996 if (clearflg > 0)
997 nmh_clear_screen ();
998 }
999 printf (">>> %s\n\n", mname);
1000 }
1001 break;
1002 }
1003 }
1004
1005 for (;;) {
1006 int bufsz = sizeof buf;
1007 switch (state = m_getfld (&gstate, name, buf, &bufsz, fp)) {
1008 case FLD:
1009 case FLDPLUS:
1010 bucket = fmt_addcomptext(name, buf);
1011 for (ip = ignores; *ip; ip++)
1012 if (!strcasecmp (name, *ip)) {
1013 while (state == FLDPLUS) {
1014 bufsz = sizeof buf;
1015 state = m_getfld (&gstate, name, buf, &bufsz, fp);
1016 fmt_appendcomp(bucket, name, buf);
1017 }
1018 break;
1019 }
1020 if (*ip)
1021 continue;
1022
1023 for (c2 = fmthd; c2; c2 = c2->c_next)
1024 if (!strcasecmp (c2->c_name ? c2->c_name : "", name))
1025 break;
1026 c1 = NULL;
1027 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
1028 for (c1 = msghd; c1; c1 = c1->c_next)
1029 if (!strcasecmp (c1->c_name ? c1->c_name : "",
1030 c3->c_name ? c3->c_name : "")) {
1031 c1->c_text =
1032 mcomp_add (c1->c_flags, buf, c1->c_text);
1033 break;
1034 }
1035 if (c1 == NULL)
1036 c1 = add_queue (&msghd, &msgtl, name, buf, 0);
1037 while (state == FLDPLUS) {
1038 bufsz = sizeof buf;
1039 state = m_getfld (&gstate, name, buf, &bufsz, fp);
1040 c1->c_text = add (buf, c1->c_text);
1041 fmt_appendcomp(bucket, name, buf);
1042 }
1043 if (c2 == NULL)
1044 c1->c_flags |= EXTRA;
1045 continue;
1046
1047 case BODY:
1048 case FILEEOF:
1049 row = column = 0;
1050 for (c1 = fmthd; c1; c1 = c1->c_next) {
1051 if (c1->c_flags & CLEARTEXT) {
1052 putcomp (c1, c1, ONECOMP);
1053 continue;
1054 }
1055 if (!c1->c_name ||
1056 !strcasecmp (c1->c_name, "messagename")) {
1057 holder.c_text = concat ("(Message ", mname, ")\n",
1058 NULL);
1059 putcomp (c1, &holder, ONECOMP);
1060 free (holder.c_text);
1061 holder.c_text = NULL;
1062 continue;
1063 }
1064 if (!c1->c_name || !strcasecmp (c1->c_name, "extras")) {
1065 for (c2 = msghd; c2; c2 = c2->c_next)
1066 if (c2->c_flags & EXTRA)
1067 putcomp (c1, c2, TWOCOMP);
1068 continue;
1069 }
1070 if (dobody && (!c1->c_name ||
1071 !strcasecmp (c1->c_name, "body"))) {
1072 if (c1->c_flags & FMTFILTER && state == BODY &&
1073 formatproc != NULL) {
1074 filterbody(c1, buf, sizeof(buf), state, fp, gstate);
1075 } else {
1076 holder.c_text = mh_xmalloc (sizeof(buf));
1077 strncpy (holder.c_text, buf, sizeof(buf));
1078 while (state == BODY) {
1079 putcomp (c1, &holder, BODYCOMP);
1080 bufsz = sizeof buf;
1081 state = m_getfld (&gstate, name, holder.c_text,
1082 &bufsz, fp);
1083 }
1084 free (holder.c_text);
1085 holder.c_text = NULL;
1086 }
1087 continue;
1088 }
1089 for (c2 = msghd; c2; c2 = c2->c_next)
1090 if (!strcasecmp (c2->c_name ? c2->c_name : "",
1091 c1->c_name ? c1->c_name : "")) {
1092 putcomp (c1, c2, ONECOMP);
1093 if (!(c1->c_flags & SPLIT))
1094 break;
1095 }
1096 }
1097 m_getfld_state_destroy (&gstate);
1098 return;
1099
1100 case LENERR:
1101 case FMTERR:
1102 advise (NULL, "format error in message %s", mname);
1103 exitstat++;
1104 m_getfld_state_destroy (&gstate);
1105 return;
1106
1107 default:
1108 adios (NULL, "getfld() returned %d", state);
1109 }
1110 }
1111 }
1112
1113
1114 static int
1115 mcomp_flags (char *name)
1116 {
1117 struct pair *ap;
1118
1119 for (ap = pairs; ap->p_name; ap++)
1120 if (!strcasecmp (ap->p_name, name))
1121 return (ap->p_flags);
1122
1123 return 0;
1124 }
1125
1126
1127 static char *
1128 mcomp_add (long flags, char *s1, char *s2)
1129 {
1130 char *dp;
1131
1132 if (!(flags & ADDRFMT))
1133 return add (s1, s2);
1134
1135 if (s2 && *(dp = s2 + strlen (s2) - 1) == '\n')
1136 *dp = 0;
1137
1138 return add (s1, add (",\n", s2));
1139 }
1140
1141
1142 struct pqpair {
1143 char *pq_text;
1144 char *pq_error;
1145 struct pqpair *pq_next;
1146 };
1147
1148
1149 static void
1150 mcomp_format (struct mcomp *c1, struct mcomp *c2)
1151 {
1152 int dat[5];
1153 char *ap, *cp;
1154 char error[BUFSIZ];
1155 struct pqpair *p, *q;
1156 struct pqpair pq;
1157 struct mailname *mp;
1158
1159 ap = c2->c_text;
1160 c2->c_text = NULL;
1161 dat[0] = 0;
1162 dat[1] = 0;
1163 dat[2] = filesize;
1164 dat[3] = BUFSIZ - 1;
1165 dat[4] = 0;
1166
1167 if (!(c1->c_flags & ADDRFMT)) {
1168 charstring_t scanl = charstring_create (BUFSIZ);
1169
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, scanl, BUFSIZ - 1, dat, NULL);
1177 /* Don't need to append a newline, dctime() already did */
1178 c2->c_text = charstring_buffer_copy (scanl);
1179 charstring_free (scanl);
1180
1181 /* ap is now owned by the component struct, so do NOT free it here */
1182 return;
1183 }
1184
1185 (q = &pq)->pq_next = NULL;
1186 while ((cp = getname (ap))) {
1187 NEW0(p);
1188 if ((mp = getm (cp, NULL, 0, error, sizeof(error))) == NULL) {
1189 p->pq_text = mh_xstrdup(cp);
1190 p->pq_error = mh_xstrdup(error);
1191 } else {
1192 p->pq_text = getcpy (mp->m_text);
1193 mnfree (mp);
1194 }
1195 q = (q->pq_next = p);
1196 }
1197
1198 for (p = pq.pq_next; p; p = q) {
1199 charstring_t scanl = charstring_create (BUFSIZ);
1200 char *buffer;
1201
1202 if (c1->c_c_text) {
1203 c1->c_c_text->c_text = p->pq_text;
1204 p->pq_text = NULL;
1205 }
1206 if (c1->c_c_error) {
1207 c1->c_c_error->c_text = p->pq_error;
1208 p->pq_error = NULL;
1209 }
1210
1211 fmt_scan (c1->c_fmt, scanl, BUFSIZ - 1, dat, NULL);
1212 buffer = charstring_buffer_copy (scanl);
1213 if (*buffer) {
1214 if (c2->c_text)
1215 c2->c_text = add (",\n", c2->c_text);
1216 if (*(cp = buffer + strlen (buffer) - 1) == '\n')
1217 *cp = 0;
1218 c2->c_text = add (buffer, c2->c_text);
1219 }
1220 charstring_free (scanl);
1221
1222 mh_xfree(p->pq_text);
1223 mh_xfree(p->pq_error);
1224 q = p->pq_next;
1225 free(p);
1226 }
1227
1228 c2->c_text = add ("\n", c2->c_text);
1229 free (ap);
1230 }
1231
1232
1233 static struct mcomp *
1234 add_queue (struct mcomp **head, struct mcomp **tail, char *name, char *text, int flags)
1235 {
1236 struct mcomp *c1;
1237
1238 NEW0(c1);
1239 c1->c_flags = flags & ~INIT;
1240 if ((c1->c_name = name ? mh_xstrdup(name) : NULL))
1241 c1->c_flags |= mcomp_flags (c1->c_name);
1242 c1->c_text = text ? mh_xstrdup(text) : NULL;
1243 if (flags & INIT) {
1244 if (global.c_ovtxt)
1245 c1->c_ovtxt = mh_xstrdup(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 mh_xfree(c1->c_name);
1270 mh_xfree(c1->c_text);
1271 mh_xfree(c1->c_ovtxt);
1272 mh_xfree(c1->c_nfs);
1273 if (c1->c_fmt)
1274 fmt_free (c1->c_fmt, 0);
1275 free(c1);
1276 }
1277
1278 *head = *tail = NULL;
1279 }
1280
1281
1282 static void
1283 putcomp (struct mcomp *c1, struct mcomp *c2, int flag)
1284 {
1285 char *text; /* c1's text, or the name as a fallback. */
1286 char *trimmed_prefix;
1287 int count, cchdr;
1288 char *cp;
1289
1290 text = c1->c_text ? c1->c_text : c1->c_name;
1291 /* Create a copy with trailing whitespace trimmed, for use with
1292 * blank lines. */
1293 trimmed_prefix = rtrim(add(text, NULL));
1294
1295 cchdr = 0;
1296 lm = 0;
1297 llim = c1->c_length ? c1->c_length : -1;
1298 wid = c1->c_width ? c1->c_width : global.c_width;
1299 ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
1300 + c1->c_offset;
1301 if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
1302 ovtxt = "";
1303 if (wid < ovoff + strlen (ovtxt) + 5)
1304 adios (NULL, "component: %s width(%d) too small for overflow(%d)",
1305 c1->c_name, wid, ovoff + strlen (ovtxt) + 5);
1306 onelp = NULL;
1307
1308 if (c1->c_flags & CLEARTEXT) {
1309 putstr (c1->c_flags & RTRIM ? rtrim (c1->c_text) : c1->c_text,
1310 c1->c_flags);
1311 putstr ("\n", c1->c_flags);
1312 return;
1313 }
1314
1315 if (c1->c_nfs && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
1316 mcomp_format (c1, c2);
1317
1318 if (c1->c_flags & CENTER) {
1319 count = (c1->c_width ? c1->c_width : global.c_width)
1320 - c1->c_offset - strlen (c2->c_text);
1321 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
1322 count -= strlen(text) + 2;
1323 lm = c1->c_offset + (count / 2);
1324 } else {
1325 if (c1->c_offset)
1326 lm = c1->c_offset;
1327 }
1328
1329 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
1330 if (c1->c_flags & UPPERCASE) /* uppercase component also */
1331 ToUpper(text);
1332 putstr(text, c1->c_flags);
1333 if (flag != BODYCOMP) {
1334 putstr (": ", c1->c_flags);
1335 if (!(c1->c_flags & SPLIT))
1336 c1->c_flags |= HDROUTPUT;
1337
1338 cchdr++;
1339 if ((count = c1->c_cwidth - strlen(text) - 2) > 0)
1340 while (count--)
1341 putstr (" ", c1->c_flags);
1342 }
1343 else
1344 c1->c_flags |= HDROUTPUT; /* for BODYCOMP */
1345 }
1346
1347 if (flag == TWOCOMP
1348 && !(c2->c_flags & HDROUTPUT)
1349 && !(c2->c_flags & NOCOMPONENT)) {
1350 if (c1->c_flags & UPPERCASE)
1351 ToUpper(c2->c_name);
1352 putstr (c2->c_name, c1->c_flags);
1353 putstr (": ", c1->c_flags);
1354 if (!(c1->c_flags & SPLIT))
1355 c2->c_flags |= HDROUTPUT;
1356
1357 cchdr++;
1358 if ((count = c1->c_cwidth - strlen (c2->c_name) - 2) > 0)
1359 while (count--)
1360 putstr (" ", c1->c_flags);
1361 }
1362 if (c1->c_flags & UPPERCASE)
1363 ToUpper(c2->c_text);
1364
1365 count = 0;
1366 if (cchdr) {
1367 if (flag == TWOCOMP)
1368 count = (c1->c_cwidth >= 0) ? c1->c_cwidth
1369 : (int) strlen (c2->c_name) + 2;
1370 else
1371 count = (c1->c_cwidth >= 0) ? (size_t) c1->c_cwidth
1372 : strlen(text) + 2;
1373 }
1374 count += c1->c_offset;
1375
1376 if ((cp = oneline (c2->c_text, c1->c_flags)))
1377 /* Output line, trimming trailing whitespace if requested. */
1378 putstr (c1->c_flags & RTRIM ? rtrim (cp) : cp, c1->c_flags);
1379 if (term == '\n')
1380 putstr ("\n", c1->c_flags);
1381 while ((cp = oneline (c2->c_text, c1->c_flags))) {
1382 lm = count;
1383 if (flag == BODYCOMP
1384 && !(c1->c_flags & NOCOMPONENT)) {
1385 /* Output component, trimming trailing whitespace if there
1386 is no text on the line. */
1387 if (*cp) {
1388 putstr(text, c1->c_flags);
1389 } else {
1390 putstr (trimmed_prefix, c1->c_flags);
1391 }
1392 }
1393 if (*cp) {
1394 /* Output line, trimming trailing whitespace if requested. */
1395 putstr (c1->c_flags & RTRIM ? rtrim (cp) : cp, c1->c_flags);
1396 }
1397 if (term == '\n')
1398 putstr ("\n", c1->c_flags);
1399 }
1400 if (flag == BODYCOMP && term == '\n')
1401 c1->c_flags &= ~HDROUTPUT; /* Buffer ended on a newline */
1402
1403 free (trimmed_prefix);
1404 }
1405
1406
1407 static char *
1408 oneline (char *stuff, long flags)
1409 {
1410 int spc;
1411 char *cp, *ret;
1412
1413 if (onelp == NULL)
1414 onelp = stuff;
1415 if (*onelp == 0)
1416 return (onelp = NULL);
1417
1418 ret = onelp;
1419 term = 0;
1420 if (flags & COMPRESS) {
1421 for (spc = 1, cp = ret; *onelp; onelp++)
1422 if (isspace ((unsigned char) *onelp)) {
1423 if (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT))) {
1424 term = '\n';
1425 *onelp++ = 0;
1426 break;
1427 }
1428 else
1429 if (!spc) {
1430 *cp++ = ' ';
1431 spc++;
1432 }
1433 }
1434 else {
1435 *cp++ = *onelp;
1436 spc = 0;
1437 }
1438
1439 *cp = 0;
1440 }
1441 else {
1442 while (*onelp && *onelp != '\n')
1443 onelp++;
1444 if (*onelp == '\n') {
1445 term = '\n';
1446 *onelp++ = 0;
1447 }
1448 if (flags & LEFTADJUST)
1449 while (*ret == ' ' || *ret == '\t')
1450 ret++;
1451 }
1452 if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1453 term = 0;
1454
1455 return ret;
1456 }
1457
1458
1459 static void
1460 putstr (char *string, long flags)
1461 {
1462 if (!column && lm > 0) {
1463 while (lm > 0)
1464 if (lm >= 8) {
1465 putch ('\t', flags);
1466 lm -= 8;
1467 }
1468 else {
1469 putch (' ', flags);
1470 lm--;
1471 }
1472 }
1473 lm = 0;
1474 while (*string)
1475 putch (*string++, flags);
1476 }
1477
1478
1479 static void
1480 putch (char ch, long flags)
1481 {
1482 char buf[BUFSIZ];
1483
1484 if (llim == 0)
1485 return;
1486
1487 switch (ch) {
1488 case '\n':
1489 if (llim > 0)
1490 llim--;
1491 column = 0;
1492 row++;
1493 if (ontty != ISTTY || row != global.c_length)
1494 break;
1495 if (global.c_flags & BELL)
1496 putchar ('\007');
1497 fflush (stdout);
1498 buf[0] = 0;
1499 if (read (fileno (stdout), buf, sizeof(buf)) < 0) {
1500 advise ("stdout", "read");
1501 }
1502 if (strchr(buf, '\n')) {
1503 if (global.c_flags & CLEARSCR)
1504 nmh_clear_screen ();
1505 row = 0;
1506 } else {
1507 putchar ('\n');
1508 row = global.c_length / 3;
1509 }
1510 return;
1511
1512 case '\t':
1513 column |= 07;
1514 column++;
1515 break;
1516
1517 case '\b':
1518 column--;
1519 break;
1520
1521 case '\r':
1522 column = 0;
1523 break;
1524
1525 default:
1526 /*
1527 * If we are forwarding this message, and the first
1528 * column contains a dash, then add a dash and a space.
1529 */
1530 if (column == 0 && forwflg && (dashstuff >= 0) && ch == '-') {
1531 putchar ('-');
1532 putchar (' ');
1533 }
1534 if (ch >= ' ')
1535 column++;
1536 break;
1537 }
1538
1539 if (column >= wid && (flags & NOWRAP) == 0) {
1540 putch ('\n', flags);
1541 if (ovoff > 0)
1542 lm = ovoff;
1543 putstr (ovtxt ? ovtxt : "", flags);
1544 putch (ch, flags);
1545 return;
1546 }
1547
1548 putchar (ch);
1549 }
1550
1551
1552 static void
1553 intrser (int i)
1554 {
1555 NMH_UNUSED (i);
1556
1557 discard (stdout);
1558 putchar ('\n');
1559 longjmp (env, DONE);
1560 }
1561
1562
1563 static void
1564 pipeser (int i)
1565 {
1566 NMH_UNUSED (i);
1567
1568 done (NOTOK);
1569 }
1570
1571
1572 static void
1573 quitser (int i)
1574 {
1575 NMH_UNUSED (i);
1576
1577 putchar ('\n');
1578 fflush (stdout);
1579 done (NOTOK);
1580 }
1581
1582
1583 #undef adios
1584 #undef done
1585
1586 static void
1587 mhladios (char *what, char *fmt, ...)
1588 {
1589 va_list ap;
1590
1591 va_start(ap, fmt);
1592 advertise (what, NULL, fmt, ap);
1593 va_end(ap);
1594 mhldone (1);
1595 }
1596
1597
1598 static void
1599 mhldone (int status)
1600 {
1601 exitstat = status;
1602 if (mhl_action)
1603 longjmp (mhlenv, DONE);
1604 else
1605 done (exitstat);
1606 }
1607
1608
1609 /*
1610 * Compile a format string used by the formatfield option and save it
1611 * for later.
1612 *
1613 * We will want the {text} (and possibly {error}) components for later,
1614 * so look for them and save them if we find them.
1615 */
1616
1617 static void
1618 compile_formatfield(struct mcomp *c1)
1619 {
1620 fmt_compile(c1->c_nfs, &c1->c_fmt, 1);
1621
1622 /*
1623 * As a note to myself and any other poor bastard who is looking through
1624 * this code in the future ....
1625 *
1626 * When the format hash table is reset later on (as it almost certainly
1627 * will be), there will still be references to these components in the
1628 * compiled format instructions. Thus these component references will
1629 * be free'd when the format instructions are free'd (by fmt_free()).
1630 *
1631 * So, in other words ... don't go free'ing them yourself!
1632 */
1633
1634 c1->c_c_text = fmt_findcomp("text");
1635 c1->c_c_error = fmt_findcomp("error");
1636 }
1637
1638 /*
1639 * Compile all of the arguments for our format list.
1640 *
1641 * Iterate through the linked list of format strings and compile them.
1642 * Note that we reset the format hash table before we start, but we do NOT
1643 * reset it between calls to fmt_compile().
1644 *
1645 */
1646
1647 static void
1648 compile_filterargs (void)
1649 {
1650 struct arglist *arg = arglist_head;
1651 struct comp *cptr;
1652 char **ap;
1653
1654 fmt_free(NULL, 1);
1655
1656 while (arg) {
1657 fmt_compile(arg->a_nfs, &arg->a_fmt, 0);
1658 arg = arg->a_next;
1659 }
1660
1661 /*
1662 * Search through and mark any components that are address components
1663 */
1664
1665 for (ap = addrcomps; *ap; ap++) {
1666 cptr = fmt_findcomp (*ap);
1667 if (cptr)
1668 cptr->c_type |= CT_ADDR;
1669 }
1670 }
1671
1672 /*
1673 * Filter the body of a message through a specified format program
1674 */
1675
1676 static void
1677 filterbody (struct mcomp *c1, char *buf, int bufsz, int state, FILE *fp,
1678 m_getfld_state_t gstate)
1679 {
1680 struct mcomp holder;
1681 char name[NAMESZ];
1682 int fdinput[2], fdoutput[2], waitstat;
1683 ssize_t cc;
1684 pid_t writerpid, filterpid;
1685
1686 /*
1687 * Create pipes so we can communicate with our filter process.
1688 */
1689
1690 if (pipe(fdinput) < 0) {
1691 adios(NULL, "Unable to create input pipe");
1692 }
1693
1694 if (pipe(fdoutput) < 0) {
1695 adios(NULL, "Unable to create output pipe");
1696 }
1697
1698 /*
1699 * Here's what we're doing to do.
1700 *
1701 * - Fork ourselves and start writing data to the write side of the
1702 * input pipe (fdinput[1]).
1703 *
1704 * - Fork and exec our filter program. We set the standard input of
1705 * our filter program to be the read side of our input pipe (fdinput[0]).
1706 * Standard output is set to the write side of our output pipe
1707 * (fdoutput[1]).
1708 *
1709 * - We read from the read side of the output pipe (fdoutput[0]).
1710 *
1711 * We're forking because that's the simplest way to prevent any deadlocks.
1712 * (without doing something like switching to non-blocking I/O and using
1713 * select or poll, and I'm not interested in doing that).
1714 */
1715
1716 switch (writerpid = fork()) {
1717 case 0:
1718 /*
1719 * Our child process - just write to the filter input (fdinput[1]).
1720 * Close all other descriptors that we don't need.
1721 */
1722
1723 close(fdinput[0]);
1724 close(fdoutput[0]);
1725 close(fdoutput[1]);
1726
1727 /*
1728 * Call m_getfld() until we're no longer in the BODY state
1729 */
1730
1731 while (state == BODY) {
1732 int bufsz2 = bufsz;
1733 if (write(fdinput[1], buf, strlen(buf)) < 0) {
1734 advise ("pipe output", "write");
1735 }
1736 state = m_getfld (&gstate, name, buf, &bufsz2, fp);
1737 }
1738
1739 /*
1740 * We should be done; time to exit.
1741 */
1742
1743 close(fdinput[1]);
1744 /*
1745 * Make sure we call _exit(), otherwise we may flush out the stdio
1746 * buffers that we have duplicated from the parent.
1747 */
1748 _exit(0);
1749 case -1:
1750 adios(NULL, "Unable to fork for filter writer process");
1751 break;
1752 }
1753
1754 /*
1755 * Fork and exec() our filter program, after redirecting standard in
1756 * and standard out appropriately.
1757 */
1758
1759 switch (filterpid = fork()) {
1760 char **args, *program;
1761 struct arglist *a;
1762 int i, dat[5], s, argp;
1763
1764 case 0:
1765 /*
1766 * Configure an argument array for us
1767 */
1768
1769 args = argsplit(formatproc, &program, &argp);
1770 args[argp + filter_nargs] = NULL;
1771 dat[0] = 0;
1772 dat[1] = 0;
1773 dat[2] = 0;
1774 dat[3] = BUFSIZ;
1775 dat[4] = 0;
1776
1777 /*
1778 * Pull out each argument and scan them.
1779 */
1780
1781 for (a = arglist_head, i = argp; a != NULL; a = a->a_next, i++) {
1782 charstring_t scanl = charstring_create (BUFSIZ);
1783
1784 fmt_scan(a->a_fmt, scanl, BUFSIZ, dat, NULL);
1785 args[i] = charstring_buffer_copy (scanl);
1786 charstring_free (scanl);
1787 /*
1788 * fmt_scan likes to put a trailing newline at the end of the
1789 * format string. If we have one, get rid of it.
1790 */
1791 s = strlen(args[i]);
1792 if (args[i][s - 1] == '\n')
1793 args[i][s - 1] = '\0';
1794
1795 if (mhldebug)
1796 fprintf(stderr, "filterarg: fmt=\"%s\", output=\"%s\"\n",
1797 a->a_nfs, args[i]);
1798 }
1799
1800 if (dup2(fdinput[0], STDIN_FILENO) < 0) {
1801 adios("formatproc", "Unable to dup2() standard input");
1802 }
1803 if (dup2(fdoutput[1], STDOUT_FILENO) < 0) {
1804 adios("formatproc", "Unable to dup2() standard output");
1805 }
1806
1807 /*
1808 * Close everything (especially the old input and output
1809 * descriptors, since they've been dup'd to stdin and stdout),
1810 * and exec the formatproc.
1811 */
1812
1813 close(fdinput[0]);
1814 close(fdinput[1]);
1815 close(fdoutput[0]);
1816 close(fdoutput[1]);
1817
1818 execvp(formatproc, args);
1819
1820 adios(formatproc, "Unable to execute filter");
1821
1822 break;
1823
1824 case -1:
1825 adios(NULL, "Unable to fork format program");
1826 }
1827
1828 /*
1829 * Close everything except our reader (fdoutput[0]);
1830 */
1831
1832 close(fdinput[0]);
1833 close(fdinput[1]);
1834 close(fdoutput[1]);
1835
1836 /*
1837 * As we read in this data, send it to putcomp
1838 */
1839
1840 holder.c_text = buf;
1841
1842 while ((cc = read(fdoutput[0], buf, bufsz - 1)) > 0) {
1843 buf[cc] = '\0';
1844 putcomp(c1, &holder, BODYCOMP);
1845 }
1846
1847 if (cc < 0) {
1848 adios(NULL, "reading from formatproc");
1849 }
1850
1851 /*
1852 * See if we got any errors along the way. I'm a little leery of calling
1853 * waitpid() without WNOHANG, but it seems to be the most correct solution.
1854 */
1855
1856 if (waitpid(filterpid, &waitstat, 0) < 0) {
1857 if (errno != ECHILD) {
1858 adios("filterproc", "Unable to determine status");
1859 }
1860 } else {
1861 if (! (WIFEXITED(waitstat) && WEXITSTATUS(waitstat) == 0)) {
1862 pidstatus(waitstat, stderr, "filterproc");
1863 }
1864 }
1865
1866 if (waitpid(writerpid, &waitstat, 0) < 0) {
1867 if (errno != ECHILD) {
1868 adios("writer process", "Unable to determine status");
1869 done(1);
1870 }
1871 } else {
1872 if (! (WIFEXITED(waitstat) && WEXITSTATUS(waitstat) == 0)) {
1873 pidstatus(waitstat, stderr, "writer process");
1874 done(1);
1875 }
1876 }
1877
1878 close(fdoutput[0]);
1879 }
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