Commit | Line | Data |
---|---|---|
d0aeaf5a DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
2ae9f53f | 7 | #ifndef lint |
aa781096 | 8 | static char *sccsid = "@(#)aux.c 5.5 (Berkeley) %G%"; |
d0aeaf5a | 9 | #endif not lint |
6447a23f KS |
10 | |
11 | #include "rcv.h" | |
12 | #include <sys/stat.h> | |
6447a23f | 13 | #include <ctype.h> |
aa781096 | 14 | #include <strings.h> |
6447a23f KS |
15 | |
16 | /* | |
17 | * Mail -- a mail program | |
18 | * | |
19 | * Auxiliary functions. | |
20 | */ | |
21 | ||
6447a23f KS |
22 | /* |
23 | * Return a pointer to a dynamic copy of the argument. | |
24 | */ | |
25 | ||
26 | char * | |
27 | savestr(str) | |
28 | char *str; | |
29 | { | |
30 | register char *cp, *cp2, *top; | |
31 | ||
32 | for (cp = str; *cp; cp++) | |
33 | ; | |
34 | top = salloc(cp-str + 1); | |
35 | if (top == NOSTR) | |
36 | return(NOSTR); | |
37 | for (cp = str, cp2 = top; *cp; cp++) | |
38 | *cp2++ = *cp; | |
39 | *cp2 = 0; | |
40 | return(top); | |
41 | } | |
42 | ||
43 | /* | |
44 | * Copy the name from the passed header line into the passed | |
45 | * name buffer. Null pad the name buffer. | |
46 | */ | |
47 | ||
48 | copyname(linebuf, nbuf) | |
49 | char *linebuf, *nbuf; | |
50 | { | |
51 | register char *cp, *cp2; | |
52 | ||
53 | for (cp = linebuf + 5, cp2 = nbuf; *cp != ' ' && cp2-nbuf < 8; cp++) | |
54 | *cp2++ = *cp; | |
55 | while (cp2-nbuf < 8) | |
56 | *cp2++ = 0; | |
57 | } | |
58 | ||
59 | /* | |
60 | * Announce a fatal error and die. | |
61 | */ | |
62 | ||
63 | panic(str) | |
64 | char *str; | |
65 | { | |
66 | prs("panic: "); | |
67 | prs(str); | |
68 | prs("\n"); | |
69 | exit(1); | |
70 | } | |
71 | ||
72 | /* | |
73 | * Catch stdio errors and report them more nicely. | |
74 | */ | |
75 | ||
76 | _error(str) | |
77 | char *str; | |
78 | { | |
79 | prs("Stdio Error: "); | |
80 | prs(str); | |
81 | prs("\n"); | |
82 | abort(); | |
83 | } | |
84 | ||
85 | /* | |
86 | * Print a string on diagnostic output. | |
87 | */ | |
88 | ||
89 | prs(str) | |
90 | char *str; | |
91 | { | |
92 | register char *s; | |
93 | ||
94 | for (s = str; *s; s++) | |
95 | ; | |
96 | write(2, str, s-str); | |
97 | } | |
98 | ||
99 | /* | |
100 | * Touch the named message by setting its MTOUCH flag. | |
101 | * Touched messages have the effect of not being sent | |
102 | * back to the system mailbox on exit. | |
103 | */ | |
104 | ||
105 | touch(mesg) | |
106 | { | |
dffe7e4f KS |
107 | register struct message *mp; |
108 | ||
109 | if (mesg < 1 || mesg > msgCount) | |
110 | return; | |
111 | mp = &message[mesg-1]; | |
112 | mp->m_flag |= MTOUCH; | |
113 | if ((mp->m_flag & MREAD) == 0) | |
114 | mp->m_flag |= MREAD|MSTATUS; | |
6447a23f KS |
115 | } |
116 | ||
117 | /* | |
118 | * Test to see if the passed file name is a directory. | |
119 | * Return true if it is. | |
120 | */ | |
121 | ||
122 | isdir(name) | |
123 | char name[]; | |
124 | { | |
125 | struct stat sbuf; | |
126 | ||
127 | if (stat(name, &sbuf) < 0) | |
128 | return(0); | |
129 | return((sbuf.st_mode & S_IFMT) == S_IFDIR); | |
130 | } | |
131 | ||
6447a23f KS |
132 | /* |
133 | * Count the number of arguments in the given string raw list. | |
134 | */ | |
135 | ||
136 | argcount(argv) | |
137 | char **argv; | |
138 | { | |
139 | register char **ap; | |
140 | ||
141 | for (ap = argv; *ap != NOSTR; ap++) | |
142 | ; | |
143 | return(ap-argv); | |
144 | } | |
145 | ||
146 | /* | |
147 | * Given a file address, determine the | |
148 | * block number it represents. | |
149 | */ | |
150 | ||
151 | blockof(off) | |
152 | off_t off; | |
153 | { | |
154 | off_t a; | |
155 | ||
156 | a = off >> 9; | |
157 | a &= 077777; | |
158 | return((int) a); | |
159 | } | |
160 | ||
161 | /* | |
162 | * Take a file address, and determine | |
163 | * its offset in the current block. | |
164 | */ | |
165 | ||
166 | offsetof(off) | |
167 | off_t off; | |
168 | { | |
169 | off_t a; | |
170 | ||
171 | a = off & 0777; | |
172 | return((int) a); | |
173 | } | |
174 | ||
6447a23f KS |
175 | /* |
176 | * Return the desired header line from the passed message | |
177 | * pointer (or NOSTR if the desired header field is not available). | |
178 | */ | |
179 | ||
180 | char * | |
181 | hfield(field, mp) | |
182 | char field[]; | |
183 | struct message *mp; | |
184 | { | |
185 | register FILE *ibuf; | |
186 | char linebuf[LINESIZE]; | |
187 | register int lc; | |
188 | ||
189 | ibuf = setinput(mp); | |
190 | if ((lc = mp->m_lines) <= 0) | |
191 | return(NOSTR); | |
192 | if (readline(ibuf, linebuf) < 0) | |
193 | return(NOSTR); | |
194 | lc--; | |
195 | do { | |
196 | lc = gethfield(ibuf, linebuf, lc); | |
197 | if (lc == -1) | |
198 | return(NOSTR); | |
199 | if (ishfield(linebuf, field)) | |
200 | return(savestr(hcontents(linebuf))); | |
201 | } while (lc > 0); | |
202 | return(NOSTR); | |
203 | } | |
204 | ||
205 | /* | |
206 | * Return the next header field found in the given message. | |
207 | * Return > 0 if something found, <= 0 elsewise. | |
208 | * Must deal with \ continuations & other such fraud. | |
209 | */ | |
210 | ||
211 | gethfield(f, linebuf, rem) | |
212 | register FILE *f; | |
213 | char linebuf[]; | |
214 | register int rem; | |
215 | { | |
216 | char line2[LINESIZE]; | |
217 | long loc; | |
218 | register char *cp, *cp2; | |
219 | register int c; | |
220 | ||
221 | ||
222 | for (;;) { | |
223 | if (rem <= 0) | |
224 | return(-1); | |
225 | if (readline(f, linebuf) < 0) | |
226 | return(-1); | |
227 | rem--; | |
228 | if (strlen(linebuf) == 0) | |
229 | return(-1); | |
230 | if (isspace(linebuf[0])) | |
231 | continue; | |
232 | if (linebuf[0] == '>') | |
233 | continue; | |
234 | cp = index(linebuf, ':'); | |
235 | if (cp == NOSTR) | |
236 | continue; | |
237 | for (cp2 = linebuf; cp2 < cp; cp2++) | |
238 | if (isdigit(*cp2)) | |
239 | continue; | |
240 | ||
241 | /* | |
242 | * I guess we got a headline. | |
243 | * Handle wraparounding | |
244 | */ | |
245 | ||
246 | for (;;) { | |
247 | if (rem <= 0) | |
248 | break; | |
249 | #ifdef CANTELL | |
250 | loc = ftell(f); | |
251 | if (readline(f, line2) < 0) | |
252 | break; | |
253 | rem--; | |
254 | if (!isspace(line2[0])) { | |
255 | fseek(f, loc, 0); | |
256 | rem++; | |
257 | break; | |
258 | } | |
259 | #else | |
260 | c = getc(f); | |
261 | ungetc(c, f); | |
262 | if (!isspace(c) || c == '\n') | |
263 | break; | |
264 | if (readline(f, line2) < 0) | |
265 | break; | |
266 | rem--; | |
267 | #endif | |
268 | cp2 = line2; | |
269 | for (cp2 = line2; *cp2 != 0 && isspace(*cp2); cp2++) | |
270 | ; | |
271 | if (strlen(linebuf) + strlen(cp2) >= LINESIZE-2) | |
272 | break; | |
273 | cp = &linebuf[strlen(linebuf)]; | |
274 | while (cp > linebuf && | |
275 | (isspace(cp[-1]) || cp[-1] == '\\')) | |
276 | cp--; | |
277 | *cp++ = ' '; | |
278 | for (cp2 = line2; *cp2 != 0 && isspace(*cp2); cp2++) | |
279 | ; | |
280 | strcpy(cp, cp2); | |
281 | } | |
282 | if ((c = strlen(linebuf)) > 0) { | |
283 | cp = &linebuf[c-1]; | |
284 | while (cp > linebuf && isspace(*cp)) | |
285 | cp--; | |
286 | *++cp = 0; | |
287 | } | |
288 | return(rem); | |
289 | } | |
290 | /* NOTREACHED */ | |
291 | } | |
292 | ||
293 | /* | |
294 | * Check whether the passed line is a header line of | |
295 | * the desired breed. | |
296 | */ | |
297 | ||
298 | ishfield(linebuf, field) | |
299 | char linebuf[], field[]; | |
300 | { | |
301 | register char *cp; | |
302 | register int c; | |
303 | ||
304 | if ((cp = index(linebuf, ':')) == NOSTR) | |
305 | return(0); | |
306 | if (cp == linebuf) | |
307 | return(0); | |
308 | cp--; | |
309 | while (cp > linebuf && isspace(*cp)) | |
310 | cp--; | |
311 | c = *++cp; | |
312 | *cp = 0; | |
313 | if (icequal(linebuf ,field)) { | |
314 | *cp = c; | |
315 | return(1); | |
316 | } | |
317 | *cp = c; | |
318 | return(0); | |
319 | } | |
320 | ||
321 | /* | |
322 | * Extract the non label information from the given header field | |
323 | * and return it. | |
324 | */ | |
325 | ||
326 | char * | |
327 | hcontents(hfield) | |
328 | char hfield[]; | |
329 | { | |
330 | register char *cp; | |
331 | ||
332 | if ((cp = index(hfield, ':')) == NOSTR) | |
333 | return(NOSTR); | |
334 | cp++; | |
335 | while (*cp && isspace(*cp)) | |
336 | cp++; | |
337 | return(cp); | |
338 | } | |
339 | ||
340 | /* | |
341 | * Compare two strings, ignoring case. | |
342 | */ | |
343 | ||
344 | icequal(s1, s2) | |
345 | register char *s1, *s2; | |
346 | { | |
347 | ||
348 | while (raise(*s1++) == raise(*s2)) | |
349 | if (*s2++ == 0) | |
350 | return(1); | |
351 | return(0); | |
352 | } | |
353 | ||
da0d3a6d KS |
354 | /* |
355 | * Copy a string, lowercasing it as we go. | |
356 | */ | |
357 | istrcpy(dest, src) | |
358 | char *dest, *src; | |
359 | { | |
360 | register char *cp, *cp2; | |
361 | ||
362 | cp2 = dest; | |
363 | cp = src; | |
364 | do { | |
365 | *cp2++ = little(*cp); | |
366 | } while (*cp++ != 0); | |
367 | } | |
368 | ||
6447a23f KS |
369 | /* |
370 | * The following code deals with input stacking to do source | |
371 | * commands. All but the current file pointer are saved on | |
372 | * the stack. | |
373 | */ | |
374 | ||
375 | static int ssp = -1; /* Top of file stack */ | |
e48b42f1 KS |
376 | struct sstack { |
377 | FILE *s_file; /* File we were in. */ | |
378 | int s_cond; /* Saved state of conditionals */ | |
f4aa38b5 | 379 | int s_loading; /* Loading .mailrc, etc. */ |
46053c99 | 380 | } sstack[NOFILE]; |
6447a23f KS |
381 | |
382 | /* | |
383 | * Pushdown current input file and switch to a new one. | |
384 | * Set the global flag "sourcing" so that others will realize | |
385 | * that they are no longer reading from a tty (in all probability). | |
386 | */ | |
387 | ||
388 | source(name) | |
389 | char name[]; | |
390 | { | |
391 | register FILE *fi; | |
5c7ba847 | 392 | register char *cp; |
6447a23f | 393 | |
5c7ba847 KS |
394 | if ((cp = expand(name)) == NOSTR) |
395 | return(1); | |
396 | if ((fi = fopen(cp, "r")) == NULL) { | |
397 | perror(cp); | |
6447a23f KS |
398 | return(1); |
399 | } | |
46053c99 | 400 | if (ssp >= NOFILE - 2) { |
6447a23f KS |
401 | printf("Too much \"sourcing\" going on.\n"); |
402 | fclose(fi); | |
403 | return(1); | |
404 | } | |
e48b42f1 KS |
405 | sstack[++ssp].s_file = input; |
406 | sstack[ssp].s_cond = cond; | |
f4aa38b5 KS |
407 | sstack[ssp].s_loading = loading; |
408 | loading = 0; | |
e48b42f1 | 409 | cond = CANY; |
6447a23f KS |
410 | input = fi; |
411 | sourcing++; | |
412 | return(0); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Source a file, but do nothing if the file cannot be opened. | |
417 | */ | |
418 | ||
419 | source1(name) | |
420 | char name[]; | |
421 | { | |
422 | register int f; | |
423 | ||
424 | if ((f = open(name, 0)) < 0) | |
425 | return(0); | |
426 | close(f); | |
427 | source(name); | |
428 | } | |
429 | ||
430 | /* | |
431 | * Pop the current input back to the previous level. | |
432 | * Update the "sourcing" flag as appropriate. | |
433 | */ | |
434 | ||
435 | unstack() | |
436 | { | |
437 | if (ssp < 0) { | |
438 | printf("\"Source\" stack over-pop.\n"); | |
439 | sourcing = 0; | |
440 | return(1); | |
441 | } | |
442 | fclose(input); | |
e48b42f1 KS |
443 | if (cond != CANY) |
444 | printf("Unmatched \"if\"\n"); | |
445 | cond = sstack[ssp].s_cond; | |
f4aa38b5 | 446 | loading = sstack[ssp].s_loading; |
e48b42f1 | 447 | input = sstack[ssp--].s_file; |
6447a23f | 448 | if (ssp < 0) |
f4aa38b5 | 449 | sourcing = loading; |
6447a23f KS |
450 | return(0); |
451 | } | |
452 | ||
453 | /* | |
454 | * Touch the indicated file. | |
455 | * This is nifty for the shell. | |
456 | * If we have the utime() system call, this is better served | |
457 | * by using that, since it will work for empty files. | |
458 | * On non-utime systems, we must sleep a second, then read. | |
459 | */ | |
460 | ||
461 | alter(name) | |
462 | char name[]; | |
463 | { | |
464 | #ifdef UTIME | |
465 | struct stat statb; | |
466 | long time(); | |
467 | time_t time_p[2]; | |
468 | #else | |
469 | register int pid, f; | |
470 | char w; | |
471 | #endif UTIME | |
472 | ||
473 | #ifdef UTIME | |
474 | if (stat(name, &statb) < 0) | |
475 | return; | |
476 | time_p[0] = time((long *) 0) + 1; | |
477 | time_p[1] = statb.st_mtime; | |
478 | utime(name, time_p); | |
479 | #else | |
6447a23f KS |
480 | sleep(1); |
481 | if ((f = open(name, 0)) < 0) | |
a0852086 | 482 | return; |
6447a23f KS |
483 | read(f, &w, 1); |
484 | exit(0); | |
485 | #endif | |
486 | } | |
487 | ||
488 | /* | |
489 | * Examine the passed line buffer and | |
490 | * return true if it is all blanks and tabs. | |
491 | */ | |
492 | ||
493 | blankline(linebuf) | |
494 | char linebuf[]; | |
495 | { | |
496 | register char *cp; | |
497 | ||
498 | for (cp = linebuf; *cp; cp++) | |
46053c99 | 499 | if (*cp != ' ' && *cp != '\t') |
6447a23f KS |
500 | return(0); |
501 | return(1); | |
502 | } | |
503 | ||
12388009 KS |
504 | /* |
505 | * Get sender's name from this message. If the message has | |
506 | * a bunch of arpanet stuff in it, we may have to skin the name | |
507 | * before returning it. | |
508 | */ | |
509 | char * | |
510 | nameof(mp, reptype) | |
511 | register struct message *mp; | |
512 | { | |
8bcfa450 | 513 | register char *cp, *cp2; |
12388009 | 514 | |
8bcfa450 KS |
515 | cp = skin(name1(mp, reptype)); |
516 | if (reptype != 0 || charcount(cp, '!') < 2) | |
517 | return(cp); | |
518 | cp2 = rindex(cp, '!'); | |
519 | cp2--; | |
520 | while (cp2 > cp && *cp2 != '!') | |
521 | cp2--; | |
522 | if (*cp2 == '!') | |
523 | return(cp2 + 1); | |
524 | return(cp); | |
12388009 KS |
525 | } |
526 | ||
527 | /* | |
b4817aab | 528 | * Skin an arpa net address according to the RFC 822 interpretation |
12388009 KS |
529 | * of "host-phrase." |
530 | */ | |
531 | char * | |
532 | skin(name) | |
533 | char *name; | |
534 | { | |
535 | register int c; | |
536 | register char *cp, *cp2; | |
b4817aab | 537 | char *bufend; |
12388009 KS |
538 | int gotlt, lastsp; |
539 | char nbuf[BUFSIZ]; | |
46053c99 | 540 | int nesting; |
12388009 KS |
541 | |
542 | if (name == NOSTR) | |
543 | return(NOSTR); | |
e557a09a CL |
544 | if (index(name, '(') == NOSTR && index(name, '<') == NOSTR |
545 | && index(name, ' ') == NOSTR) | |
12388009 KS |
546 | return(name); |
547 | gotlt = 0; | |
548 | lastsp = 0; | |
b4817aab KM |
549 | bufend = nbuf; |
550 | for (cp = name, cp2 = bufend; c = *cp++; ) { | |
12388009 KS |
551 | switch (c) { |
552 | case '(': | |
b4817aab KM |
553 | /* |
554 | * Start of a "comment". | |
555 | * Ignore it. | |
556 | */ | |
46053c99 | 557 | nesting = 1; |
b4817aab KM |
558 | while ((c = *cp) != 0) { |
559 | cp++; | |
560 | switch (c) { | |
561 | case '\\': | |
562 | if (*cp == 0) | |
563 | goto outcm; | |
564 | cp++; | |
565 | break; | |
46053c99 S |
566 | case '(': |
567 | nesting++; | |
568 | break; | |
569 | ||
570 | case ')': | |
571 | --nesting; | |
572 | break; | |
573 | } | |
574 | ||
575 | if (nesting <= 0) | |
576 | break; | |
577 | } | |
b4817aab KM |
578 | outcm: |
579 | lastsp = 0; | |
580 | break; | |
581 | ||
582 | case '"': | |
583 | /* | |
584 | * Start of a "quoted-string". | |
585 | * Copy it in its entirety. | |
586 | */ | |
587 | while ((c = *cp) != 0) { | |
588 | cp++; | |
589 | switch (c) { | |
590 | case '\\': | |
591 | if ((c = *cp) == 0) | |
592 | goto outqs; | |
593 | cp++; | |
594 | break; | |
595 | case '"': | |
596 | goto outqs; | |
597 | } | |
598 | *cp2++ = c; | |
599 | } | |
600 | outqs: | |
e557a09a | 601 | lastsp = 0; |
12388009 KS |
602 | break; |
603 | ||
604 | case ' ': | |
e557a09a CL |
605 | if (cp[0] == 'a' && cp[1] == 't' && cp[2] == ' ') |
606 | cp += 3, *cp2++ = '@'; | |
607 | else | |
608 | if (cp[0] == '@' && cp[1] == ' ') | |
609 | cp += 2, *cp2++ = '@'; | |
610 | else | |
611 | lastsp = 1; | |
12388009 KS |
612 | break; |
613 | ||
614 | case '<': | |
b4817aab | 615 | cp2 = bufend; |
12388009 KS |
616 | gotlt++; |
617 | lastsp = 0; | |
618 | break; | |
619 | ||
620 | case '>': | |
b4817aab KM |
621 | if (gotlt) { |
622 | gotlt = 0; | |
623 | while (*cp != ',' && *cp != 0) | |
624 | cp++; | |
625 | if (*cp == 0 ) | |
626 | goto done; | |
627 | *cp2++ = ','; | |
628 | *cp2++ = ' '; | |
629 | bufend = cp2; | |
630 | break; | |
631 | } | |
12388009 KS |
632 | |
633 | /* Fall into . . . */ | |
634 | ||
635 | default: | |
636 | if (lastsp) { | |
637 | lastsp = 0; | |
638 | *cp2++ = ' '; | |
639 | } | |
640 | *cp2++ = c; | |
641 | break; | |
642 | } | |
643 | } | |
644 | done: | |
645 | *cp2 = 0; | |
646 | ||
647 | return(savestr(nbuf)); | |
648 | } | |
649 | ||
6447a23f KS |
650 | /* |
651 | * Fetch the sender's name from the passed message. | |
12388009 KS |
652 | * Reptype can be |
653 | * 0 -- get sender's name for display purposes | |
654 | * 1 -- get sender's name for reply | |
655 | * 2 -- get sender's name for Reply | |
6447a23f KS |
656 | */ |
657 | ||
658 | char * | |
12388009 | 659 | name1(mp, reptype) |
6447a23f KS |
660 | register struct message *mp; |
661 | { | |
662 | char namebuf[LINESIZE]; | |
663 | char linebuf[LINESIZE]; | |
664 | register char *cp, *cp2; | |
665 | register FILE *ibuf; | |
666 | int first = 1; | |
667 | ||
12388009 KS |
668 | if ((cp = hfield("from", mp)) != NOSTR) |
669 | return(cp); | |
670 | if (reptype == 0 && (cp = hfield("sender", mp)) != NOSTR) | |
671 | return(cp); | |
6447a23f KS |
672 | ibuf = setinput(mp); |
673 | copy("", namebuf); | |
674 | if (readline(ibuf, linebuf) <= 0) | |
675 | return(savestr(namebuf)); | |
676 | newname: | |
677 | for (cp = linebuf; *cp != ' '; cp++) | |
678 | ; | |
679 | while (any(*cp, " \t")) | |
680 | cp++; | |
681 | for (cp2 = &namebuf[strlen(namebuf)]; *cp && !any(*cp, " \t") && | |
682 | cp2-namebuf < LINESIZE-1; *cp2++ = *cp++) | |
683 | ; | |
684 | *cp2 = '\0'; | |
685 | if (readline(ibuf, linebuf) <= 0) | |
686 | return(savestr(namebuf)); | |
687 | if ((cp = index(linebuf, 'F')) == NULL) | |
688 | return(savestr(namebuf)); | |
689 | if (strncmp(cp, "From", 4) != 0) | |
690 | return(savestr(namebuf)); | |
691 | while ((cp = index(cp, 'r')) != NULL) { | |
692 | if (strncmp(cp, "remote", 6) == 0) { | |
693 | if ((cp = index(cp, 'f')) == NULL) | |
694 | break; | |
695 | if (strncmp(cp, "from", 4) != 0) | |
696 | break; | |
697 | if ((cp = index(cp, ' ')) == NULL) | |
698 | break; | |
699 | cp++; | |
700 | if (first) { | |
701 | copy(cp, namebuf); | |
702 | first = 0; | |
703 | } else | |
704 | strcpy(rindex(namebuf, '!')+1, cp); | |
705 | strcat(namebuf, "!"); | |
706 | goto newname; | |
707 | } | |
708 | cp++; | |
709 | } | |
710 | return(savestr(namebuf)); | |
711 | } | |
712 | ||
8bcfa450 KS |
713 | /* |
714 | * Count the occurances of c in str | |
715 | */ | |
716 | charcount(str, c) | |
717 | char *str; | |
718 | { | |
719 | register char *cp; | |
720 | register int i; | |
721 | ||
722 | for (i = 0, cp = str; *cp; cp++) | |
723 | if (*cp == c) | |
724 | i++; | |
725 | return(i); | |
726 | } | |
727 | ||
6447a23f KS |
728 | /* |
729 | * See if the string is a number. | |
730 | */ | |
731 | ||
732 | numeric(str) | |
733 | char str[]; | |
734 | { | |
735 | register char *cp = str; | |
736 | ||
737 | while (*cp) | |
738 | if (!isdigit(*cp++)) | |
739 | return(0); | |
740 | return(1); | |
741 | } | |
742 | ||
743 | /* | |
744 | * Are any of the characters in the two strings the same? | |
745 | */ | |
746 | ||
747 | anyof(s1, s2) | |
748 | register char *s1, *s2; | |
749 | { | |
750 | register int c; | |
751 | ||
752 | while (c = *s1++) | |
753 | if (any(c, s2)) | |
754 | return(1); | |
755 | return(0); | |
756 | } | |
757 | ||
da0d3a6d KS |
758 | /* |
759 | * See if the given header field is supposed to be ignored. | |
760 | */ | |
761 | isign(field) | |
762 | char *field; | |
763 | { | |
764 | char realfld[BUFSIZ]; | |
da0d3a6d | 765 | |
46053c99 S |
766 | /* |
767 | * Lower-case the string, so that "Status" and "status" | |
768 | * will hash to the same place. | |
769 | */ | |
da0d3a6d | 770 | istrcpy(realfld, field); |
46053c99 S |
771 | |
772 | if (nretained > 0) | |
773 | return (!member(realfld, retain)); | |
774 | else | |
775 | return (member(realfld, ignore)); | |
776 | } | |
777 | ||
778 | member(realfield, table) | |
779 | register char *realfield; | |
780 | register struct ignore **table; | |
781 | { | |
782 | register struct ignore *igp; | |
783 | ||
784 | for (igp = table[hash(realfield)]; igp != 0; igp = igp->i_link) | |
785 | if (equal(igp->i_field, realfield)) | |
786 | return (1); | |
787 | ||
788 | return (0); | |
da0d3a6d | 789 | } |