1 /*
2 * Copyright 1988,1990,1993,1994 by Paul Vixie
3 * All rights reserved
4 */
5
6 /*
7 * Copyright (c) 1997 by Internet Software Consortium
8 *
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
14 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
16 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
17 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
18 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
19 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
20 * SOFTWARE.
21 */
22
23 #if !defined(lint) && !defined(LINT)
24 static const char rcsid[] =
25 "$Id: entry.c,v 1.3 1998/08/14 00:32:39 vixie Exp $";
26 #endif
27
28 /* vix 26jan87 [RCS'd; rest of log is in RCS file]
29 * vix 01jan87 [added line-level error recovery]
30 * vix 31dec86 [added /step to the from-to range, per bob@acornrc]
31 * vix 30dec86 [written]
32 */
33
34
35 #include "cron.h"
36 #include <grp.h>
37 #ifdef LOGIN_CAP
38 #include <login_cap.h>
39 #endif
40
41 typedef enum ecode {
42 e_none, e_minute, e_hour, e_dom, e_month, e_dow,
43 e_cmd, e_timespec, e_username, e_group, e_option,
44 e_mem
45 #ifdef LOGIN_CAP
46 , e_class
47 #endif
48 } ecode_e;
49
50 static const char *ecodes[] =
51 {
52 "no error",
53 "bad minute",
54 "bad hour",
55 "bad day-of-month",
56 "bad month",
57 "bad day-of-week",
58 "bad command",
59 "bad time specifier",
60 "bad username",
61 "bad group name",
62 "bad option",
63 "out of memory",
64 #ifdef LOGIN_CAP
65 "bad class name",
66 #endif
67 };
68
69 static char get_list(bitstr_t *, int, int, const char *[], int, FILE *),
70 get_range(bitstr_t *, int, int, const char *[], int, FILE *),
71 get_number(int *, int, const char *[], int, FILE *);
72 static int set_element(bitstr_t *, int, int, int);
73
74 void
free_entry(entry * e)75 free_entry(entry *e)
76 {
77 #ifdef LOGIN_CAP
78 if (e->class != NULL)
79 free(e->class);
80 #endif
81 if (e->cmd != NULL)
82 free(e->cmd);
83 if (e->envp != NULL)
84 env_free(e->envp);
85 free(e);
86 }
87
88
89 /* return NULL if eof or syntax error occurs;
90 * otherwise return a pointer to a new entry.
91 */
92 entry *
load_entry(FILE * file,void (* error_func)(const char *),struct passwd * pw,char ** envp)93 load_entry(FILE *file, void (*error_func)(const char *), struct passwd *pw,
94 char **envp)
95 {
96 /* this function reads one crontab entry -- the next -- from a file.
97 * it skips any leading blank lines, ignores comments, and returns
98 * EOF if for any reason the entry can't be read and parsed.
99 *
100 * the entry is also parsed here.
101 *
102 * syntax:
103 * user crontab:
104 * minutes hours doms months dows cmd\n
105 * system crontab (/etc/crontab):
106 * minutes hours doms months dows USERNAME cmd\n
107 */
108
109 ecode_e ecode = e_none;
110 entry *e;
111 int ch;
112 int len;
113 char cmd[MAX_COMMAND];
114 char envstr[MAX_ENVSTR];
115 char **prev_env;
116
117 Debug(DPARS, ("load_entry()...about to eat comments\n"))
118
119 skip_comments(file);
120
121 ch = get_char(file);
122 if (ch == EOF)
123 return NULL;
124
125 /* ch is now the first useful character of a useful line.
126 * it may be an @special or it may be the first character
127 * of a list of minutes.
128 */
129
130 e = (entry *) calloc(sizeof(entry), sizeof(char));
131
132 if (e == NULL) {
133 warn("load_entry: calloc failed");
134 return NULL;
135 }
136
137 if (ch == '@') {
138 long interval;
139 char *endptr;
140
141 /* all of these should be flagged and load-limited; i.e.,
142 * instead of @hourly meaning "0 * * * *" it should mean
143 * "close to the front of every hour but not 'til the
144 * system load is low". Problems are: how do you know
145 * what "low" means? (save me from /etc/cron.conf!) and:
146 * how to guarantee low variance (how low is low?), which
147 * means how to we run roughly every hour -- seems like
148 * we need to keep a history or let the first hour set
149 * the schedule, which means we aren't load-limited
150 * anymore. too much for my overloaded brain. (vix, jan90)
151 * HINT
152 */
153 Debug(DPARS, ("load_entry()...about to test shortcuts\n"))
154 ch = get_string(cmd, MAX_COMMAND, file, " \t\n");
155 if (!strcmp("reboot", cmd)) {
156 Debug(DPARS, ("load_entry()...reboot shortcut\n"))
157 e->flags |= WHEN_REBOOT;
158 } else if (!strcmp("yearly", cmd) || !strcmp("annually", cmd)){
159 Debug(DPARS, ("load_entry()...yearly shortcut\n"))
160 bit_set(e->second, 0);
161 bit_set(e->minute, 0);
162 bit_set(e->hour, 0);
163 bit_set(e->dom, 0);
164 bit_set(e->month, 0);
165 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
166 e->flags |= DOW_STAR;
167 } else if (!strcmp("monthly", cmd)) {
168 Debug(DPARS, ("load_entry()...monthly shortcut\n"))
169 bit_set(e->second, 0);
170 bit_set(e->minute, 0);
171 bit_set(e->hour, 0);
172 bit_set(e->dom, 0);
173 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
174 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
175 e->flags |= DOW_STAR;
176 } else if (!strcmp("weekly", cmd)) {
177 Debug(DPARS, ("load_entry()...weekly shortcut\n"))
178 bit_set(e->second, 0);
179 bit_set(e->minute, 0);
180 bit_set(e->hour, 0);
181 bit_nset(e->dom, 0, (LAST_DOM-FIRST_DOM+1));
182 e->flags |= DOM_STAR;
183 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
184 bit_set(e->dow, 0);
185 } else if (!strcmp("daily", cmd) || !strcmp("midnight", cmd)) {
186 Debug(DPARS, ("load_entry()...daily shortcut\n"))
187 bit_set(e->second, 0);
188 bit_set(e->minute, 0);
189 bit_set(e->hour, 0);
190 bit_nset(e->dom, 0, (LAST_DOM-FIRST_DOM+1));
191 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
192 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
193 } else if (!strcmp("hourly", cmd)) {
194 Debug(DPARS, ("load_entry()...hourly shortcut\n"))
195 bit_set(e->second, 0);
196 bit_set(e->minute, 0);
197 bit_nset(e->hour, 0, (LAST_HOUR-FIRST_HOUR+1));
198 bit_nset(e->dom, 0, (LAST_DOM-FIRST_DOM+1));
199 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
200 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
201 } else if (!strcmp("every_minute", cmd)) {
202 Debug(DPARS, ("load_entry()...every_minute shortcut\n"))
203 bit_set(e->second, 0);
204 bit_nset(e->minute, 0, (LAST_MINUTE-FIRST_MINUTE+1));
205 bit_nset(e->hour, 0, (LAST_HOUR-FIRST_HOUR+1));
206 bit_nset(e->dom, 0, (LAST_DOM-FIRST_DOM+1));
207 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
208 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
209 } else if (!strcmp("every_second", cmd)) {
210 Debug(DPARS, ("load_entry()...every_second shortcut\n"))
211 e->flags |= SEC_RES;
212 bit_nset(e->second, 0, (LAST_SECOND-FIRST_SECOND+1));
213 bit_nset(e->minute, 0, (LAST_MINUTE-FIRST_MINUTE+1));
214 bit_nset(e->hour, 0, (LAST_HOUR-FIRST_HOUR+1));
215 bit_nset(e->dom, 0, (LAST_DOM-FIRST_DOM+1));
216 bit_nset(e->month, 0, (LAST_MONTH-FIRST_MONTH+1));
217 bit_nset(e->dow, 0, (LAST_DOW-FIRST_DOW+1));
218 } else if (*cmd != '\0' &&
219 (interval = strtol(cmd, &endptr, 10)) > 0 &&
220 *endptr == '\0') {
221 Debug(DPARS, ("load_entry()... %ld seconds "
222 "since last run\n", interval))
223 e->interval = interval;
224 e->flags = INTERVAL;
225 } else {
226 ecode = e_timespec;
227 goto eof;
228 }
229 /* Advance past whitespace between shortcut and
230 * username/command.
231 */
232 Skip_Blanks(ch, file);
233 if (ch == EOF) {
234 ecode = e_cmd;
235 goto eof;
236 }
237 } else {
238 Debug(DPARS, ("load_entry()...about to parse numerics\n"))
239 bit_set(e->second, 0);
240
241 ch = get_list(e->minute, FIRST_MINUTE, LAST_MINUTE,
242 PPC_NULL, ch, file);
243 if (ch == EOF) {
244 ecode = e_minute;
245 goto eof;
246 }
247
248 /* hours
249 */
250
251 ch = get_list(e->hour, FIRST_HOUR, LAST_HOUR,
252 PPC_NULL, ch, file);
253 if (ch == EOF) {
254 ecode = e_hour;
255 goto eof;
256 }
257
258 /* DOM (days of month)
259 */
260
261 if (ch == '*')
262 e->flags |= DOM_STAR;
263 ch = get_list(e->dom, FIRST_DOM, LAST_DOM,
264 PPC_NULL, ch, file);
265 if (ch == EOF) {
266 ecode = e_dom;
267 goto eof;
268 }
269
270 /* month
271 */
272
273 ch = get_list(e->month, FIRST_MONTH, LAST_MONTH,
274 MonthNames, ch, file);
275 if (ch == EOF) {
276 ecode = e_month;
277 goto eof;
278 }
279
280 /* DOW (days of week)
281 */
282
283 if (ch == '*')
284 e->flags |= DOW_STAR;
285 ch = get_list(e->dow, FIRST_DOW, LAST_DOW,
286 DowNames, ch, file);
287 if (ch == EOF) {
288 ecode = e_dow;
289 goto eof;
290 }
291 }
292
293 /* make sundays equivalent */
294 if (bit_test(e->dow, 0) || bit_test(e->dow, 7)) {
295 bit_set(e->dow, 0);
296 bit_set(e->dow, 7);
297 }
298
299 /* ch is the first character of a command, or a username */
300 unget_char(ch, file);
301
302 if (!pw) {
303 char *username = cmd; /* temp buffer */
304 char *s;
305 struct group *grp;
306 #ifdef LOGIN_CAP
307 login_cap_t *lc;
308 #endif
309
310 Debug(DPARS, ("load_entry()...about to parse username\n"))
311 ch = get_string(username, MAX_COMMAND, file, " \t");
312
313 Debug(DPARS, ("load_entry()...got %s\n",username))
314 if (ch == EOF) {
315 ecode = e_cmd;
316 goto eof;
317 }
318
319 /* need to have consumed blanks when checking options below */
320 Skip_Blanks(ch, file)
321 unget_char(ch, file);
322 #ifdef LOGIN_CAP
323 if ((s = strrchr(username, '/')) != NULL) {
324 *s = '\0';
325 e->class = strdup(s + 1);
326 if (e->class == NULL)
327 warn("strdup(\"%s\")", s + 1);
328 } else {
329 e->class = strdup(RESOURCE_RC);
330 if (e->class == NULL)
331 warn("strdup(\"%s\")", RESOURCE_RC);
332 }
333 if (e->class == NULL) {
334 ecode = e_mem;
335 goto eof;
336 }
337 if ((lc = login_getclass(e->class)) == NULL) {
338 ecode = e_class;
339 goto eof;
340 }
341 login_close(lc);
342 #endif
343 grp = NULL;
344 if ((s = strrchr(username, ':')) != NULL) {
345 *s = '\0';
346 if ((grp = getgrnam(s + 1)) == NULL) {
347 ecode = e_group;
348 goto eof;
349 }
350 }
351
352 pw = getpwnam(username);
353 if (pw == NULL) {
354 ecode = e_username;
355 goto eof;
356 }
357 if (grp != NULL)
358 pw->pw_gid = grp->gr_gid;
359 Debug(DPARS, ("load_entry()...uid %d, gid %d\n",pw->pw_uid,pw->pw_gid))
360 #ifdef LOGIN_CAP
361 Debug(DPARS, ("load_entry()...class %s\n",e->class))
362 #endif
363 }
364
365 #ifndef PAM /* PAM takes care of account expiration by itself */
366 if (pw->pw_expire && time(NULL) >= pw->pw_expire) {
367 ecode = e_username;
368 goto eof;
369 }
370 #endif /* !PAM */
371
372 e->uid = pw->pw_uid;
373 e->gid = pw->pw_gid;
374
375 /* copy and fix up environment. some variables are just defaults and
376 * others are overrides; we process only the overrides here, defaults
377 * are handled in do_command after login.conf is processed.
378 */
379 e->envp = env_copy(envp);
380 if (e->envp == NULL) {
381 warn("env_copy");
382 ecode = e_mem;
383 goto eof;
384 }
385 if (!env_get("SHELL", e->envp)) {
386 prev_env = e->envp;
387 e->envp = env_set(e->envp, "SHELL=" _PATH_BSHELL);
388 if (e->envp == NULL) {
389 warn("env_set(%s)", "SHELL=" _PATH_BSHELL);
390 env_free(prev_env);
391 ecode = e_mem;
392 goto eof;
393 }
394 }
395 /* If LOGIN_CAP, this is deferred to do_command where the login class
396 * is processed. If !LOGIN_CAP, do it here.
397 */
398 #ifndef LOGIN_CAP
399 if (!env_get("HOME", e->envp)) {
400 prev_env = e->envp;
401 len = snprintf(envstr, sizeof(envstr), "HOME=%s", pw->pw_dir);
402 if (len < (int)sizeof(envstr))
403 e->envp = env_set(e->envp, envstr);
404 if (len >= (int)sizeof(envstr) || e->envp == NULL) {
405 warn("env_set(%s)", envstr);
406 env_free(prev_env);
407 ecode = e_mem;
408 goto eof;
409 }
410 }
411 #endif
412 prev_env = e->envp;
413 len = snprintf(envstr, sizeof(envstr), "LOGNAME=%s", pw->pw_name);
414 if (len < (int)sizeof(envstr))
415 e->envp = env_set(e->envp, envstr);
416 if (len >= (int)sizeof(envstr) || e->envp == NULL) {
417 warn("env_set(%s)", envstr);
418 env_free(prev_env);
419 ecode = e_mem;
420 goto eof;
421 }
422 #if defined(BSD)
423 prev_env = e->envp;
424 len = snprintf(envstr, sizeof(envstr), "USER=%s", pw->pw_name);
425 if (len < (int)sizeof(envstr))
426 e->envp = env_set(e->envp, envstr);
427 if (len >= (int)sizeof(envstr) || e->envp == NULL) {
428 warn("env_set(%s)", envstr);
429 env_free(prev_env);
430 ecode = e_mem;
431 goto eof;
432 }
433 #endif
434
435 Debug(DPARS, ("load_entry()...checking for command options\n"))
436
437 ch = get_char(file);
438
439 while (ch == '-') {
440 Debug(DPARS|DEXT, ("load_entry()...expecting option\n"))
441 switch (ch = get_char(file)) {
442 case 'n':
443 Debug(DPARS|DEXT, ("load_entry()...got MAIL_WHEN_ERR ('n') option\n"))
444 /* only allow the user to set the option once */
445 if ((e->flags & MAIL_WHEN_ERR) == MAIL_WHEN_ERR) {
446 Debug(DPARS|DEXT, ("load_entry()...duplicate MAIL_WHEN_ERR ('n') option\n"))
447 ecode = e_option;
448 goto eof;
449 }
450 e->flags |= MAIL_WHEN_ERR;
451 break;
452 case 'q':
453 Debug(DPARS|DEXT, ("load_entry()...got DONT_LOG ('q') option\n"))
454 /* only allow the user to set the option once */
455 if ((e->flags & DONT_LOG) == DONT_LOG) {
456 Debug(DPARS|DEXT, ("load_entry()...duplicate DONT_LOG ('q') option\n"))
457 ecode = e_option;
458 goto eof;
459 }
460 e->flags |= DONT_LOG;
461 break;
462 default:
463 Debug(DPARS|DEXT, ("load_entry()...invalid option '%c'\n", ch))
464 ecode = e_option;
465 goto eof;
466 }
467 ch = get_char(file);
468 if (ch!='\t' && ch!=' ') {
469 ecode = e_option;
470 goto eof;
471 }
472
473 Skip_Blanks(ch, file)
474 if (ch == EOF || ch == '\n') {
475 ecode = e_cmd;
476 goto eof;
477 }
478 }
479
480 unget_char(ch, file);
481
482 Debug(DPARS, ("load_entry()...about to parse command\n"))
483
484 /* Everything up to the next \n or EOF is part of the command...
485 * too bad we don't know in advance how long it will be, since we
486 * need to malloc a string for it... so, we limit it to MAX_COMMAND.
487 */
488 ch = get_string(cmd, MAX_COMMAND, file, "\n");
489
490 /* a file without a \n before the EOF is rude, so we'll complain...
491 */
492 if (ch == EOF) {
493 ecode = e_cmd;
494 goto eof;
495 }
496
497 /* got the command in the 'cmd' string; save it in *e.
498 */
499 e->cmd = strdup(cmd);
500 if (e->cmd == NULL) {
501 warn("strdup(\"%s\")", cmd);
502 ecode = e_mem;
503 goto eof;
504 }
505 Debug(DPARS, ("load_entry()...returning successfully\n"))
506
507 /* success, fini, return pointer to the entry we just created...
508 */
509 return e;
510
511 eof:
512 free_entry(e);
513 if (ecode != e_none && error_func)
514 (*error_func)(ecodes[(int)ecode]);
515 while (ch != EOF && ch != '\n')
516 ch = get_char(file);
517 return NULL;
518 }
519
520
521 /*
522 * bits one bit per flag, default=FALSE
523 * low, high bounds, impl. offset for bitstr
524 * names NULL or names for these elements
525 * ch current character being processed
526 * file file being read
527 */
528 static char
get_list(bitstr_t * bits,int low,int high,const char * names[],int ch,FILE * file)529 get_list(bitstr_t *bits, int low, int high, const char *names[], int ch,
530 FILE *file)
531 {
532 int done;
533
534 /* we know that we point to a non-blank character here;
535 * must do a Skip_Blanks before we exit, so that the
536 * next call (or the code that picks up the cmd) can
537 * assume the same thing.
538 */
539
540 Debug(DPARS|DEXT, ("get_list()...entered\n"))
541
542 /* list = range {"," range}
543 */
544
545 /* clear the bit string, since the default is 'off'.
546 */
547 bit_nclear(bits, 0, (high-low+1));
548
549 /* process all ranges
550 */
551 done = FALSE;
552 while (!done) {
553 ch = get_range(bits, low, high, names, ch, file);
554 if (ch == ',')
555 ch = get_char(file);
556 else
557 done = TRUE;
558 }
559
560 /* exiting. skip to some blanks, then skip over the blanks.
561 */
562 Skip_Nonblanks(ch, file)
563 Skip_Blanks(ch, file)
564
565 Debug(DPARS|DEXT, ("get_list()...exiting w/ %02x\n", ch))
566
567 return ch;
568 }
569
570
571 /*
572 * bits one bit per flag, default=FALSE
573 * low, high bounds, impl. offset for bitstr
574 * names NULL or names for these elements
575 * ch current character being processed
576 * file file being read
577 */
578 static char
get_range(bitstr_t * bits,int low,int high,const char * names[],int ch,FILE * file)579 get_range(bitstr_t *bits, int low, int high, const char *names[], int ch,
580 FILE *file)
581 {
582 /* range = number | number "-" number [ "/" number ]
583 */
584
585 int i, num1, num2, num3;
586
587 Debug(DPARS|DEXT, ("get_range()...entering, exit won't show\n"))
588
589 if (ch == '*') {
590 /* '*' means "first-last" but can still be modified by /step
591 */
592 num1 = low;
593 num2 = high;
594 ch = get_char(file);
595 if (ch == EOF)
596 return EOF;
597 } else {
598 if (EOF == (ch = get_number(&num1, low, names, ch, file)))
599 return EOF;
600
601 if (ch == '/')
602 num2 = high;
603 else if (ch != '-') {
604 /* not a range, it's a single number.
605 */
606 if (EOF == set_element(bits, low, high, num1))
607 return EOF;
608 return ch;
609 } else {
610 /* eat the dash
611 */
612 ch = get_char(file);
613 if (ch == EOF)
614 return EOF;
615
616 /* get the number following the dash
617 */
618 ch = get_number(&num2, low, names, ch, file);
619 if (ch == EOF)
620 return EOF;
621 }
622 }
623
624 /* check for step size
625 */
626 if (ch == '/') {
627 /* eat the slash
628 */
629 ch = get_char(file);
630 if (ch == EOF)
631 return EOF;
632
633 /* get the step size -- note: we don't pass the
634 * names here, because the number is not an
635 * element id, it's a step size. 'low' is
636 * sent as a 0 since there is no offset either.
637 */
638 ch = get_number(&num3, 0, PPC_NULL, ch, file);
639 if (ch == EOF || num3 == 0)
640 return EOF;
641 } else {
642 /* no step. default==1.
643 */
644 num3 = 1;
645 }
646
647 /* range. set all elements from num1 to num2, stepping
648 * by num3. (the step is a downward-compatible extension
649 * proposed conceptually by bob@acornrc, syntactically
650 * designed then implemented by paul vixie).
651 */
652 for (i = num1; i <= num2; i += num3)
653 if (EOF == set_element(bits, low, high, i))
654 return EOF;
655
656 return ch;
657 }
658
659
660 /*
661 * numptr where does the result go?
662 * low offset applied to enum result
663 * names symbolic names, if any, for enums
664 * ch current character
665 * file source
666 */
667 static char
get_number(int * numptr,int low,const char * names[],int ch,FILE * file)668 get_number(int *numptr, int low, const char *names[], int ch, FILE *file)
669 {
670 char temp[MAX_TEMPSTR], *pc;
671 int len, i, all_digits;
672
673 /* collect alphanumerics into our fixed-size temp array
674 */
675 pc = temp;
676 len = 0;
677 all_digits = TRUE;
678 while (isalnum(ch)) {
679 if (++len >= MAX_TEMPSTR)
680 return EOF;
681
682 *pc++ = ch;
683
684 if (!isdigit(ch))
685 all_digits = FALSE;
686
687 ch = get_char(file);
688 }
689 *pc = '\0';
690 if (len == 0)
691 return (EOF);
692
693 /* try to find the name in the name list
694 */
695 if (names) {
696 for (i = 0; names[i] != NULL; i++) {
697 Debug(DPARS|DEXT,
698 ("get_num, compare(%s,%s)\n", names[i], temp))
699 if (!strcasecmp(names[i], temp)) {
700 *numptr = i+low;
701 return ch;
702 }
703 }
704 }
705
706 /* no name list specified, or there is one and our string isn't
707 * in it. either way: if it's all digits, use its magnitude.
708 * otherwise, it's an error.
709 */
710 if (all_digits) {
711 *numptr = atoi(temp);
712 return ch;
713 }
714
715 return EOF;
716 }
717
718
719 static int
set_element(bitstr_t * bits,int low,int high,int number)720 set_element(bitstr_t *bits, int low, int high, int number)
721 {
722 Debug(DPARS|DEXT, ("set_element(?,%d,%d,%d)\n", low, high, number))
723
724 if (number < low || number > high)
725 return EOF;
726
727 bit_set(bits, (number-low));
728 return OK;
729 }
730