1 /*
2 * sh.func.c: csh builtin functions
3 */
4 /*-
5 * Copyright (c) 1980, 1991 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32 #include "sh.h"
33 #include "ed.h"
34 #include "tw.h"
35 #include "tc.h"
36 #ifdef WINNT_NATIVE
37 #include "nt.const.h"
38 #endif /* WINNT_NATIVE */
39
40 #if defined (NLS_CATALOGS) && defined(HAVE_ICONV)
41 static iconv_t catgets_iconv; /* Or (iconv_t)-1 */
42 #endif
43
44 /*
45 * C shell
46 */
47
48 extern int MapsAreInited;
49 extern int NLSMapsAreInited;
50 extern int GotTermCaps;
51
52 static int zlast = -1;
53
54 static void islogin (void);
55 static void preread (void);
56 static void doagain (void);
57 static const char *isrchx (int);
58 static void search (int, int, Char *);
59 static int getword (struct Strbuf *);
60 static struct wordent *histgetword (struct wordent *);
61 static void toend (void);
62 static void xecho (int, Char **);
63 static int islocale_var (Char *);
64 static void wpfree (struct whyle *);
65
66 const struct biltins *
isbfunc(struct command * t)67 isbfunc(struct command *t)
68 {
69 Char *cp = t->t_dcom[0];
70 const struct biltins *bp, *bp1, *bp2;
71 static struct biltins label = {"", dozip, 0, 0};
72 static struct biltins foregnd = {"%job", dofg1, 0, 0};
73 static struct biltins backgnd = {"%job &", dobg1, 0, 0};
74
75 /*
76 * We never match a builtin that has quoted the first
77 * character; this has been the traditional way to escape
78 * builtin commands.
79 */
80 if (*cp & QUOTE)
81 return NULL;
82
83 if (*cp != ':' && lastchr(cp) == ':') {
84 label.bname = short2str(cp);
85 return (&label);
86 }
87 if (*cp == '%') {
88 if (t->t_dflg & F_AMPERSAND) {
89 t->t_dflg &= ~F_AMPERSAND;
90 backgnd.bname = short2str(cp);
91 return (&backgnd);
92 }
93 foregnd.bname = short2str(cp);
94 return (&foregnd);
95 }
96 #ifdef WARP
97 /*
98 * This is a perhaps kludgy way to determine if the warp builtin is to be
99 * acknowledged or not. If checkwarp() fails, then we are to assume that
100 * the warp command is invalid, and carry on as we would handle any other
101 * non-builtin command. -- JDK 2/4/88
102 */
103 if (eq(STRwarp, cp) && !checkwarp()) {
104 return (0); /* this builtin disabled */
105 }
106 #endif /* WARP */
107 /*
108 * Binary search Bp1 is the beginning of the current search range. Bp2 is
109 * one past the end.
110 */
111 for (bp1 = bfunc, bp2 = bfunc + nbfunc; bp1 < bp2;) {
112 int i;
113
114 bp = bp1 + ((bp2 - bp1) >> 1);
115 if ((i = ((char) *cp) - *bp->bname) == 0 &&
116 (i = StrQcmp(cp, str2short(bp->bname))) == 0)
117 return bp;
118 if (i < 0)
119 bp2 = bp;
120 else
121 bp1 = bp + 1;
122 }
123 #ifdef WINNT_NATIVE
124 return nt_check_additional_builtins(cp);
125 #endif /*WINNT_NATIVE*/
126 return (0);
127 }
128
129 void
func(struct command * t,const struct biltins * bp)130 func(struct command *t, const struct biltins *bp)
131 {
132 int i;
133
134 xechoit(t->t_dcom);
135 setname(bp->bname);
136 i = blklen(t->t_dcom) - 1;
137 if (i < bp->minargs)
138 stderror(ERR_NAME | ERR_TOOFEW);
139 if (i > bp->maxargs)
140 stderror(ERR_NAME | ERR_TOOMANY);
141 (*bp->bfunct) (t->t_dcom, t);
142 }
143
144 /*ARGSUSED*/
145 void
doonintr(Char ** v,struct command * c)146 doonintr(Char **v, struct command *c)
147 {
148 Char *cp;
149 Char *vv = v[1];
150
151 USE(c);
152 if (parintr.sa_handler == SIG_IGN)
153 return;
154 if (setintr && intty)
155 stderror(ERR_NAME | ERR_TERMINAL);
156 cp = gointr;
157 gointr = 0;
158 xfree(cp);
159 if (vv == 0) {
160 if (setintr)
161 sigset_interrupting(SIGINT, queue_pintr);
162 else
163 (void) signal(SIGINT, SIG_DFL);
164 gointr = 0;
165 }
166 else if (eq((vv = strip(vv)), STRminus)) {
167 (void) signal(SIGINT, SIG_IGN);
168 gointr = Strsave(STRminus);
169 }
170 else {
171 gointr = Strsave(vv);
172 sigset_interrupting(SIGINT, queue_pintr);
173 }
174 }
175
176 /*ARGSUSED*/
177 void
donohup(Char ** v,struct command * c)178 donohup(Char **v, struct command *c)
179 {
180 USE(c);
181 USE(v);
182 if (intty)
183 stderror(ERR_NAME | ERR_TERMINAL);
184 if (setintr == 0) {
185 (void) signal(SIGHUP, SIG_IGN);
186 phup_disabled = 1;
187 #ifdef CC
188 submit(getpid());
189 #endif /* CC */
190 }
191 }
192
193 /*ARGSUSED*/
194 void
dohup(Char ** v,struct command * c)195 dohup(Char **v, struct command *c)
196 {
197 USE(c);
198 USE(v);
199 if (intty)
200 stderror(ERR_NAME | ERR_TERMINAL);
201 if (setintr == 0)
202 sigset_interrupting(SIGHUP, SIG_DFL);
203 }
204
205
206 /*ARGSUSED*/
207 void
dozip(Char ** v,struct command * c)208 dozip(Char **v, struct command *c)
209 {
210 USE(c);
211 USE(v);
212 }
213
214 /*ARGSUSED*/
215 void
dofiletest(Char ** v,struct command * c)216 dofiletest(Char **v, struct command *c)
217 {
218 Char **globbed, **fileptr, *ftest, *res;
219
220 USE(c);
221 if (*(ftest = *++v) != '-')
222 stderror(ERR_NAME | ERR_FILEINQ);
223 ++v;
224
225 v = glob_all_or_error(v);
226 globbed = v;
227 cleanup_push(globbed, blk_cleanup);
228
229 while (*(fileptr = v++) != NULL) {
230 res = filetest(ftest, &fileptr, TEXP_NOGLOB);
231 cleanup_push(res, xfree);
232 xprintf("%" TCSH_S, res);
233 cleanup_until(res);
234 if (*v)
235 xprintf(" ");
236 }
237 xprintf("\n");
238
239 cleanup_until(globbed);
240 }
241
242 void
prvars(void)243 prvars(void)
244 {
245 plist(&shvhed, VAR_ALL);
246 }
247
248 /*ARGSUSED*/
249 void
doalias(Char ** v,struct command * c)250 doalias(Char **v, struct command *c)
251 {
252 struct varent *vp;
253 Char *p;
254
255 USE(c);
256 v++;
257 p = *v++;
258 if (p == 0)
259 plist(&aliases, VAR_ALL);
260 else if (*v == 0) {
261 vp = adrof1(strip(p), &aliases);
262 if (vp && vp->vec)
263 blkpr(vp->vec), xputchar('\n');
264 }
265 else {
266 if (eq(p, STRalias) || eq(p, STRunalias)) {
267 setname(short2str(p));
268 stderror(ERR_NAME | ERR_DANGER);
269 }
270 set1(strip(p), saveblk(v), &aliases, VAR_READWRITE);
271 tw_cmd_free();
272 }
273 }
274
275 /*ARGSUSED*/
276 void
unalias(Char ** v,struct command * c)277 unalias(Char **v, struct command *c)
278 {
279 USE(c);
280 unset1(v, &aliases);
281 tw_cmd_free();
282 }
283
284 /*ARGSUSED*/
285 void
dologout(Char ** v,struct command * c)286 dologout(Char **v, struct command *c)
287 {
288 USE(c);
289 USE(v);
290 islogin();
291 goodbye(NULL, NULL);
292 }
293
294 /*ARGSUSED*/
295 void
dologin(Char ** v,struct command * c)296 dologin(Char **v, struct command *c)
297 {
298 #ifdef WINNT_NATIVE
299 USE(c);
300 USE(v);
301 #else /* !WINNT_NATIVE */
302 char **p = short2blk(v);
303
304 USE(c);
305 cleanup_push((Char **)p, blk_cleanup);
306 islogin();
307 rechist(NULL, adrof(STRsavehist) != NULL);
308 sigaction(SIGTERM, &parterm, NULL);
309 (void) execv(_PATH_BIN_LOGIN, p);
310 (void) execv(_PATH_USRBIN_LOGIN, p);
311 cleanup_until((Char **)p);
312 untty();
313 xexit(1);
314 #endif /* !WINNT_NATIVE */
315 }
316
317
318 #ifdef NEWGRP
319 /*ARGSUSED*/
320 void
donewgrp(Char ** v,struct command * c)321 donewgrp(Char **v, struct command *c)
322 {
323 char **p;
324 if (chkstop == 0 && setintr)
325 panystop(0);
326 sigaction(SIGTERM, &parterm, NULL);
327 p = short2blk(v);
328 /*
329 * From Beto Appleton (beto@aixwiz.austin.ibm.com)
330 * Newgrp can take 2 arguments...
331 */
332 (void) execv(_PATH_BIN_NEWGRP, p);
333 (void) execv(_PATH_USRBIN_NEWGRP, p);
334 blkfree((Char **) p);
335 untty();
336 xexit(1);
337 }
338 #endif /* NEWGRP */
339
340 static void
islogin(void)341 islogin(void)
342 {
343 if (chkstop == 0 && setintr)
344 panystop(0);
345 if (loginsh)
346 return;
347 stderror(ERR_NOTLOGIN);
348 }
349
350 void
doif(Char ** v,struct command * kp)351 doif(Char **v, struct command *kp)
352 {
353 int i;
354 Char **vv;
355
356 v++;
357 i = noexec ? 1 : expr(&v);
358 vv = v;
359 if (*vv == NULL)
360 stderror(ERR_NAME | ERR_EMPTYIF);
361 if (eq(*vv, STRthen)) {
362 if (*++vv)
363 stderror(ERR_NAME | ERR_IMPRTHEN);
364 setname(short2str(STRthen));
365 /*
366 * If expression was zero, then scan to else , otherwise just fall into
367 * following code.
368 */
369 if (!i)
370 search(TC_IF, 0, NULL);
371 return;
372 }
373 /*
374 * Simple command attached to this if. Left shift the node in this tree,
375 * munging it so we can reexecute it.
376 */
377 if (i) {
378 lshift(kp->t_dcom, vv - kp->t_dcom);
379 reexecute(kp);
380 donefds();
381 }
382 }
383
384 /*
385 * Reexecute a command, being careful not
386 * to redo i/o redirection, which is already set up.
387 */
388 void
reexecute(struct command * kp)389 reexecute(struct command *kp)
390 {
391 kp->t_dflg &= F_SAVE;
392 kp->t_dflg |= F_REPEAT;
393 /*
394 * If tty is still ours to arbitrate, arbitrate it; otherwise dont even set
395 * pgrp's as the jobs would then have no way to get the tty (we can't give
396 * it to them, and our parent wouldn't know their pgrp, etc.
397 */
398 execute(kp, (tpgrp > 0 ? tpgrp : -1), NULL, NULL, TRUE);
399 }
400
401 /*ARGSUSED*/
402 void
doelse(Char ** v,struct command * c)403 doelse (Char **v, struct command *c)
404 {
405 USE(c);
406 USE(v);
407 if (!noexec)
408 search(TC_ELSE, 0, NULL);
409 }
410
411 /*ARGSUSED*/
412 void
dogoto(Char ** v,struct command * c)413 dogoto(Char **v, struct command *c)
414 {
415 Char *lp;
416
417 USE(c);
418 lp = globone(v[1], G_ERROR);
419 cleanup_push(lp, xfree);
420 if (!noexec)
421 gotolab(lp);
422 cleanup_until(lp);
423 }
424
425 void
gotolab(Char * lab)426 gotolab(Char *lab)
427 {
428 struct whyle *wp;
429 /*
430 * While we still can, locate any unknown ends of existing loops. This
431 * obscure code is the WORST result of the fact that we don't really parse.
432 */
433 zlast = TC_GOTO;
434 for (wp = whyles; wp; wp = wp->w_next)
435 if (wp->w_end.type == TCSH_F_SEEK && wp->w_end.f_seek == 0) {
436 search(TC_BREAK, 0, NULL);
437 btell(&wp->w_end);
438 }
439 else {
440 bseek(&wp->w_end);
441 }
442 search(TC_GOTO, 0, lab);
443 /*
444 * Eliminate loops which were exited.
445 */
446 wfree();
447 }
448
449 /*ARGSUSED*/
450 void
doswitch(Char ** v,struct command * c)451 doswitch(Char **v, struct command *c)
452 {
453 Char *cp, *lp;
454
455 USE(c);
456 v++;
457 if (!*v || *(*v++) != '(')
458 stderror(ERR_SYNTAX);
459 cp = **v == ')' ? STRNULL : *v++;
460 if (*(*v++) != ')')
461 v--;
462 if (*v)
463 stderror(ERR_SYNTAX);
464 lp = globone(cp, G_ERROR);
465 cleanup_push(lp, xfree);
466 if (!noexec)
467 search(TC_SWITCH, 0, lp);
468 cleanup_until(lp);
469 }
470
471 /*ARGSUSED*/
472 void
dobreak(Char ** v,struct command * c)473 dobreak(Char **v, struct command *c)
474 {
475 USE(v);
476 USE(c);
477 if (whyles == NULL)
478 stderror(ERR_NAME | ERR_NOTWHILE);
479 if (!noexec)
480 toend();
481 }
482
483 /*ARGSUSED*/
484 void
doexit(Char ** v,struct command * c)485 doexit(Char **v, struct command *c)
486 {
487 USE(c);
488
489 if (chkstop == 0 && (intty || intact) && evalvec == 0)
490 panystop(0);
491 /*
492 * Don't DEMAND parentheses here either.
493 */
494 v++;
495 if (*v) {
496 setstrstatus(putn(expr(&v)));
497 if (*v)
498 stderror(ERR_NAME | ERR_EXPRESSION);
499 }
500 btoeof();
501 #if 0
502 if (intty)
503 #endif
504 /* Always close, why only on ttys? */
505 xclose(SHIN);
506 }
507
508 /*ARGSUSED*/
509 void
doforeach(Char ** v,struct command * c)510 doforeach(Char **v, struct command *c)
511 {
512 Char *cp, *sp;
513 struct whyle *nwp;
514 int gflag;
515
516 USE(c);
517 v++;
518 cp = sp = strip(*v);
519 if (!letter(*cp))
520 stderror(ERR_NAME | ERR_VARBEGIN);
521 do {
522 cp++;
523 } while (alnum(*cp));
524 if (*cp != '\0')
525 stderror(ERR_NAME | ERR_VARALNUM);
526 cp = *v++;
527 if (v[0][0] != '(' || v[blklen(v) - 1][0] != ')')
528 stderror(ERR_NAME | ERR_NOPAREN);
529 v++;
530 gflag = tglob(v);
531 if (gflag) {
532 v = globall(v, gflag);
533 if (v == 0 && !noexec)
534 stderror(ERR_NAME | ERR_NOMATCH);
535 }
536 else {
537 v = saveblk(v);
538 trim(v);
539 }
540 nwp = xcalloc(1, sizeof *nwp);
541 nwp->w_fe = nwp->w_fe0 = v;
542 btell(&nwp->w_start);
543 nwp->w_fename = Strsave(cp);
544 nwp->w_next = whyles;
545 nwp->w_end.type = TCSH_F_SEEK;
546 whyles = nwp;
547 /*
548 * Pre-read the loop so as to be more comprehensible to a terminal user.
549 */
550 zlast = TC_FOREACH;
551 if (intty)
552 preread();
553 if (!noexec)
554 doagain();
555 }
556
557 /*ARGSUSED*/
558 void
dowhile(Char ** v,struct command * c)559 dowhile(Char **v, struct command *c)
560 {
561 int status;
562 int again = whyles != 0 &&
563 SEEKEQ(&whyles->w_start, &lineloc) &&
564 whyles->w_fename == 0;
565
566 USE(c);
567 v++;
568 /*
569 * Implement prereading here also, taking care not to evaluate the
570 * expression before the loop has been read up from a terminal.
571 */
572 if (noexec)
573 status = 0;
574 else if (intty && !again)
575 status = !exp0(&v, 1);
576 else
577 status = !expr(&v);
578 if (*v && !noexec)
579 stderror(ERR_NAME | ERR_EXPRESSION);
580 if (!again) {
581 struct whyle *nwp = xcalloc(1, sizeof(*nwp));
582
583 nwp->w_start = lineloc;
584 nwp->w_end.type = TCSH_F_SEEK;
585 nwp->w_end.f_seek = 0;
586 nwp->w_end.a_seek = 0;
587 nwp->w_next = whyles;
588 whyles = nwp;
589 zlast = TC_WHILE;
590 if (intty) {
591 /*
592 * The tty preread
593 */
594 preread();
595 doagain();
596 return;
597 }
598 }
599 if (status)
600 /* We ain't gonna loop no more, no more! */
601 toend();
602 }
603
604 static void
preread(void)605 preread(void)
606 {
607 int old_pintr_disabled;
608
609 whyles->w_end.type = TCSH_I_SEEK;
610 if (setintr)
611 pintr_push_enable(&old_pintr_disabled);
612 search(TC_BREAK, 0, NULL); /* read the expression in */
613 if (setintr)
614 cleanup_until(&old_pintr_disabled);
615 btell(&whyles->w_end);
616 }
617
618 /*ARGSUSED*/
619 void
doend(Char ** v,struct command * c)620 doend(Char **v, struct command *c)
621 {
622 USE(v);
623 USE(c);
624 if (!whyles)
625 stderror(ERR_NAME | ERR_NOTWHILE);
626 btell(&whyles->w_end);
627 if (!noexec)
628 doagain();
629 }
630
631 /*ARGSUSED*/
632 void
docontin(Char ** v,struct command * c)633 docontin(Char **v, struct command *c)
634 {
635 USE(v);
636 USE(c);
637 if (!whyles)
638 stderror(ERR_NAME | ERR_NOTWHILE);
639 if (!noexec)
640 doagain();
641 }
642
643 static void
doagain(void)644 doagain(void)
645 {
646 /* Repeating a while is simple */
647 if (whyles->w_fename == 0) {
648 bseek(&whyles->w_start);
649 return;
650 }
651 /*
652 * The foreach variable list actually has a spurious word ")" at the end of
653 * the w_fe list. Thus we are at the of the list if one word beyond this
654 * is 0.
655 */
656 if (!whyles->w_fe[1]) {
657 dobreak(NULL, NULL);
658 return;
659 }
660 setv(whyles->w_fename, quote(Strsave(*whyles->w_fe++)), VAR_READWRITE);
661 bseek(&whyles->w_start);
662 }
663
664 void
dorepeat(Char ** v,struct command * kp)665 dorepeat(Char **v, struct command *kp)
666 {
667 int i = 1;
668
669 do {
670 i *= getn(v[1]);
671 lshift(v, 2);
672 } while (v[0] != NULL && Strcmp(v[0], STRrepeat) == 0);
673 if (noexec)
674 i = 1;
675
676 if (setintr) {
677 pintr_disabled++;
678 cleanup_push(&pintr_disabled, disabled_cleanup);
679 }
680 while (i > 0) {
681 if (setintr && pintr_disabled == 1) {
682 cleanup_until(&pintr_disabled);
683 pintr_disabled++;
684 cleanup_push(&pintr_disabled, disabled_cleanup);
685 }
686 reexecute(kp);
687 --i;
688 }
689 if (setintr && pintr_disabled == 1)
690 cleanup_until(&pintr_disabled);
691 donefds();
692 }
693
694 /*ARGSUSED*/
695 void
doswbrk(Char ** v,struct command * c)696 doswbrk(Char **v, struct command *c)
697 {
698 USE(v);
699 USE(c);
700 if (!noexec)
701 search(TC_BRKSW, 0, NULL);
702 }
703
704 int
srchx(Char * cp)705 srchx(Char *cp)
706 {
707 struct srch *sp, *sp1, *sp2;
708 int i;
709
710 /*
711 * Ignore keywords inside heredocs
712 */
713 if (inheredoc)
714 return -1;
715
716 /*
717 * Binary search Sp1 is the beginning of the current search range. Sp2 is
718 * one past the end.
719 */
720 for (sp1 = srchn, sp2 = srchn + nsrchn; sp1 < sp2;) {
721 sp = sp1 + ((sp2 - sp1) >> 1);
722 if ((i = *cp - *sp->s_name) == 0 &&
723 (i = Strcmp(cp, str2short(sp->s_name))) == 0)
724 return sp->s_value;
725 if (i < 0)
726 sp2 = sp;
727 else
728 sp1 = sp + 1;
729 }
730 return (-1);
731 }
732
733 static const char *
isrchx(int n)734 isrchx(int n)
735 {
736 struct srch *sp, *sp2;
737
738 for (sp = srchn, sp2 = srchn + nsrchn; sp < sp2; sp++)
739 if (sp->s_value == n)
740 return (sp->s_name);
741 return ("");
742 }
743
744
745 static int Stype;
746 static Char *Sgoal;
747
748 static void
search(int type,int level,Char * goal)749 search(int type, int level, Char *goal)
750 {
751 struct Strbuf word = Strbuf_INIT;
752 Char *cp;
753 struct whyle *wp;
754 int wlevel = 0;
755 struct wordent *histent = NULL, *ohistent = NULL;
756
757 Stype = type;
758 Sgoal = goal;
759 if (type == TC_GOTO) {
760 struct Ain a;
761 a.type = TCSH_F_SEEK;
762 a.f_seek = 0;
763 a.a_seek = 0;
764 bseek(&a);
765 }
766 cleanup_push(&word, Strbuf_cleanup);
767 do {
768
769 if (intty) {
770 histent = xmalloc(sizeof(*histent));
771 ohistent = xmalloc(sizeof(*histent));
772 ohistent->word = STRNULL;
773 ohistent->next = histent;
774 histent->prev = ohistent;
775 }
776
777 if (intty && fseekp == feobp && aret == TCSH_F_SEEK)
778 printprompt(1, isrchx(type == TC_BREAK ? zlast : type));
779 /* xprintf("? "), flush(); */
780 (void) getword(&word);
781 Strbuf_terminate(&word);
782
783 if (intty && Strlen(word.s) > 0) {
784 histent->word = Strsave(word.s);
785 histent->next = xmalloc(sizeof(*histent));
786 histent->next->prev = histent;
787 histent = histent->next;
788 }
789
790 switch (srchx(word.s)) {
791
792 case TC_ELSE:
793 if (level == 0 && type == TC_IF)
794 goto end;
795 break;
796
797 case TC_IF:
798 while (getword(&word)) {
799 if (intty) {
800 histent->word = Strsave(word.s);
801 histent->next = xmalloc(sizeof(*histent));
802 histent->next->prev = histent;
803 histent = histent->next;
804 }
805 continue;
806 }
807
808 if ((type == TC_IF || type == TC_ELSE) &&
809 eq(word.s, STRthen))
810 level++;
811 break;
812
813 case TC_ENDIF:
814 if (type == TC_IF || type == TC_ELSE)
815 level--;
816 break;
817
818 case TC_FOREACH:
819 case TC_WHILE:
820 wlevel++;
821 if (type == TC_BREAK)
822 level++;
823 break;
824
825 case TC_END:
826 if (type == TC_BRKSW) {
827 if (wlevel == 0) {
828 wp = whyles;
829 if (wp) {
830 whyles = wp->w_next;
831 wpfree(wp);
832 }
833 }
834 }
835 if (type == TC_BREAK)
836 level--;
837 wlevel--;
838 break;
839
840 case TC_SWITCH:
841 if (type == TC_SWITCH || type == TC_BRKSW)
842 level++;
843 break;
844
845 case TC_ENDSW:
846 if (type == TC_SWITCH || type == TC_BRKSW)
847 level--;
848 break;
849
850 case TC_LABEL:
851 if (type == TC_GOTO && getword(&word) && eq(word.s, goal))
852 level = -1;
853 break;
854
855 default:
856 if (type != TC_GOTO && (type != TC_SWITCH || level != 0))
857 break;
858 if (word.len == 0 || word.s[word.len - 1] != ':')
859 break;
860 word.s[--word.len] = 0;
861 if ((type == TC_GOTO && eq(word.s, goal)) ||
862 (type == TC_SWITCH && eq(word.s, STRdefault)))
863 level = -1;
864 break;
865
866 case TC_CASE:
867 if (type != TC_SWITCH || level != 0)
868 break;
869 (void) getword(&word);
870 if (word.len != 0 && word.s[word.len - 1] == ':')
871 word.s[--word.len] = 0;
872 cp = strip(Dfix1(word.s));
873 cleanup_push(cp, xfree);
874 if (Gmatch(goal, cp))
875 level = -1;
876 cleanup_until(cp);
877 break;
878
879 case TC_DEFAULT:
880 if (type == TC_SWITCH && level == 0)
881 level = -1;
882 break;
883 }
884 if (intty) {
885 ohistent->prev = histgetword(histent);
886 ohistent->prev->next = ohistent;
887 savehist(ohistent, 0);
888 freelex(ohistent);
889 xfree(ohistent);
890 } else
891 (void) getword(NULL);
892 } while (level >= 0);
893 end:
894 cleanup_until(&word);
895 }
896
897 static struct wordent *
histgetword(struct wordent * histent)898 histgetword(struct wordent *histent)
899 {
900 int first;
901 eChar c, d;
902 int e;
903 struct Strbuf *tmp;
904 tmp = xmalloc(sizeof(*tmp));
905 tmp->size = 0;
906 tmp->s = NULL;
907 c = readc(1);
908 d = 0;
909 e = 0;
910 for (;;) {
911 tmp->len = 0;
912 Strbuf_terminate (tmp);
913 while (c == ' ' || c == '\t')
914 c = readc(1);
915 if (c == '#')
916 do
917 c = readc(1);
918 while (c != CHAR_ERR && c != '\n');
919 if (c == CHAR_ERR)
920 goto past;
921 if (c == '\n')
922 goto nl;
923 unreadc(c);
924 first = 1;
925 do {
926 e = (c == '\\');
927 c = readc(1);
928 if (c == '\\' && !e) {
929 if ((c = readc(1)) == '\n') {
930 e = 1;
931 c = ' ';
932 } else {
933 unreadc(c);
934 c = '\\';
935 }
936 }
937 if ((c == '\'' || c == '"') && !e) {
938 if (d == 0)
939 d = c;
940 else if (d == c)
941 d = 0;
942 }
943 if (c == CHAR_ERR)
944 goto past;
945
946 Strbuf_append1(tmp, (Char) c);
947
948 if (!first && !d && c == '(' && !e) {
949 break;
950 }
951 first = 0;
952 } while (d || e || (c != ' ' && c != '\t' && c != '\n'));
953 tmp->len--;
954 if (tmp->len) {
955 Strbuf_terminate(tmp);
956 histent->word = Strsave(tmp->s);
957 histent->next = xmalloc(sizeof (*histent));
958 histent->next->prev = histent;
959 histent = histent->next;
960 }
961 if (c == '\n') {
962 nl:
963 tmp->len = 0;
964 Strbuf_append1(tmp, (Char) c);
965 Strbuf_terminate(tmp);
966 histent->word = Strsave(tmp->s);
967 return histent;
968 }
969 }
970
971 past:
972 switch (Stype) {
973
974 case TC_IF:
975 stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
976 break;
977
978 case TC_ELSE:
979 stderror(ERR_NAME | ERR_NOTFOUND, "endif");
980 break;
981
982 case TC_BRKSW:
983 case TC_SWITCH:
984 stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
985 break;
986
987 case TC_BREAK:
988 stderror(ERR_NAME | ERR_NOTFOUND, "end");
989 break;
990
991 case TC_GOTO:
992 setname(short2str(Sgoal));
993 stderror(ERR_NAME | ERR_NOTFOUND, "label");
994 break;
995
996 default:
997 break;
998 }
999 /* NOTREACHED */
1000 return NULL;
1001 }
1002
1003 static int
getword(struct Strbuf * wp)1004 getword(struct Strbuf *wp)
1005 {
1006 int found = 0, first;
1007 eChar c, d;
1008
1009 if (wp)
1010 wp->len = 0;
1011 c = readc(1);
1012 d = 0;
1013 do {
1014 while (c == ' ' || c == '\t')
1015 c = readc(1);
1016 if (c == '#')
1017 do
1018 c = readc(1);
1019 while (c != CHAR_ERR && c != '\n');
1020 if (c == CHAR_ERR)
1021 goto past;
1022 if (c == '\n') {
1023 if (wp)
1024 break;
1025 return (0);
1026 }
1027 unreadc(c);
1028 found = 1;
1029 first = 1;
1030 do {
1031 c = readc(1);
1032 if (c == '\\' && (c = readc(1)) == '\n')
1033 c = ' ';
1034 if (c == '\'' || c == '"') {
1035 if (d == 0)
1036 d = c;
1037 else if (d == c)
1038 d = 0;
1039 }
1040 if (c == CHAR_ERR)
1041 goto past;
1042 if (wp)
1043 Strbuf_append1(wp, (Char) c);
1044 if (!d && c == ')') {
1045 if (!first && wp) {
1046 goto past_word_end;
1047 } else {
1048 if (wp) {
1049 wp->len = 1;
1050 Strbuf_terminate(wp);
1051 }
1052 return found;
1053 }
1054 }
1055 if (!first && !d && c == '(') {
1056 if (wp)
1057 goto past_word_end;
1058 else
1059 break;
1060 }
1061 first = 0;
1062 } while ((d || (c != ' ' && c != '\t')) && c != '\n');
1063 } while (wp == 0);
1064
1065 past_word_end:
1066 unreadc(c);
1067 if (found) {
1068 wp->len--;
1069 Strbuf_terminate(wp);
1070 }
1071
1072 return (found);
1073
1074 past:
1075 switch (Stype) {
1076
1077 case TC_IF:
1078 stderror(ERR_NAME | ERR_NOTFOUND, "then/endif");
1079 break;
1080
1081 case TC_ELSE:
1082 stderror(ERR_NAME | ERR_NOTFOUND, "endif");
1083 break;
1084
1085 case TC_BRKSW:
1086 case TC_SWITCH:
1087 stderror(ERR_NAME | ERR_NOTFOUND, "endsw");
1088 break;
1089
1090 case TC_BREAK:
1091 stderror(ERR_NAME | ERR_NOTFOUND, "end");
1092 break;
1093
1094 case TC_GOTO:
1095 setname(short2str(Sgoal));
1096 stderror(ERR_NAME | ERR_NOTFOUND, "label");
1097 break;
1098
1099 default:
1100 break;
1101 }
1102 /* NOTREACHED */
1103 return (0);
1104 }
1105
1106 static void
toend(void)1107 toend(void)
1108 {
1109 if (whyles->w_end.type == TCSH_F_SEEK && whyles->w_end.f_seek == 0) {
1110 search(TC_BREAK, 0, NULL);
1111 btell(&whyles->w_end);
1112 whyles->w_end.f_seek--;
1113 }
1114 else {
1115 bseek(&whyles->w_end);
1116 }
1117 wfree();
1118 }
1119
1120 static void
wpfree(struct whyle * wp)1121 wpfree(struct whyle *wp)
1122 {
1123 if (wp->w_fe0)
1124 blkfree(wp->w_fe0);
1125 xfree(wp->w_fename);
1126 xfree(wp);
1127 }
1128
1129 void
wfree(void)1130 wfree(void)
1131 {
1132 struct Ain o;
1133 struct whyle *nwp;
1134 #ifdef lint
1135 nwp = NULL; /* sun lint is dumb! */
1136 #endif
1137
1138 #ifdef FDEBUG
1139 static const char foo[] = "IAFE";
1140 #endif /* FDEBUG */
1141
1142 btell(&o);
1143
1144 #ifdef FDEBUG
1145 xprintf("o->type %c o->a_seek %d o->f_seek %d\n",
1146 foo[o.type + 1], o.a_seek, o.f_seek);
1147 #endif /* FDEBUG */
1148
1149 for (; whyles; whyles = nwp) {
1150 struct whyle *wp = whyles;
1151 nwp = wp->w_next;
1152
1153 #ifdef FDEBUG
1154 xprintf("start->type %c start->a_seek %d start->f_seek %d\n",
1155 foo[wp->w_start.type+1],
1156 wp->w_start.a_seek, wp->w_start.f_seek);
1157 xprintf("end->type %c end->a_seek %d end->f_seek %d\n",
1158 foo[wp->w_end.type + 1], wp->w_end.a_seek, wp->w_end.f_seek);
1159 #endif /* FDEBUG */
1160
1161 /*
1162 * XXX: We free loops that have different seek types.
1163 */
1164 if (wp->w_end.type != TCSH_I_SEEK && wp->w_start.type == wp->w_end.type &&
1165 wp->w_start.type == o.type) {
1166 if (wp->w_end.type == TCSH_F_SEEK) {
1167 if (o.f_seek >= wp->w_start.f_seek &&
1168 (wp->w_end.f_seek == 0 || o.f_seek < wp->w_end.f_seek))
1169 break;
1170 }
1171 else {
1172 if (o.a_seek >= wp->w_start.a_seek &&
1173 (wp->w_end.a_seek == 0 || o.a_seek < wp->w_end.a_seek))
1174 break;
1175 }
1176 }
1177
1178 wpfree(wp);
1179 }
1180 }
1181
1182 /*ARGSUSED*/
1183 void
doecho(Char ** v,struct command * c)1184 doecho(Char **v, struct command *c)
1185 {
1186 USE(c);
1187 xecho(' ', v);
1188 }
1189
1190 /*ARGSUSED*/
1191 void
doglob(Char ** v,struct command * c)1192 doglob(Char **v, struct command *c)
1193 {
1194 USE(c);
1195 xecho(0, v);
1196 flush();
1197 }
1198
1199 static void
xecho(int sep,Char ** v)1200 xecho(int sep, Char **v)
1201 {
1202 Char **globbed = NULL;
1203 const Char *cp;
1204 int nonl = 0;
1205 int echo_style = ECHO_STYLE;
1206 struct varent *vp;
1207
1208 if ((vp = adrof(STRecho_style)) != NULL && vp->vec != NULL &&
1209 vp->vec[0] != NULL) {
1210 if (Strcmp(vp->vec[0], STRbsd) == 0)
1211 echo_style = BSD_ECHO;
1212 else if (Strcmp(vp->vec[0], STRsysv) == 0)
1213 echo_style = SYSV_ECHO;
1214 else if (Strcmp(vp->vec[0], STRboth) == 0)
1215 echo_style = BOTH_ECHO;
1216 else if (Strcmp(vp->vec[0], STRnone) == 0)
1217 echo_style = NONE_ECHO;
1218 }
1219
1220 v++;
1221 if (*v == 0)
1222 goto done;
1223 if (setintr) {
1224 int old_pintr_disabled;
1225 pintr_push_enable(&old_pintr_disabled);
1226 v = glob_all_or_error(v);
1227 cleanup_until(&old_pintr_disabled);
1228 } else {
1229 v = glob_all_or_error(v);
1230 }
1231 globbed = v;
1232 if (globbed != NULL)
1233 cleanup_push(globbed, blk_cleanup);
1234
1235 if ((echo_style & BSD_ECHO) != 0 && sep == ' ' && *v && eq(*v, STRmn))
1236 nonl++, v++;
1237
1238 while ((cp = *v++) != 0) {
1239 eChar c;
1240
1241 if (setintr) {
1242 int old_pintr_disabled;
1243
1244 pintr_push_enable(&old_pintr_disabled);
1245 cleanup_until(&old_pintr_disabled);
1246 }
1247 for (; (c = *cp) != 0; cp++) {
1248 if ((echo_style & SYSV_ECHO) != 0 && c == '\\') {
1249 if ((c = parseescape(&cp, FALSE)) == CHAR_ERR)
1250 c = '\\';
1251 }
1252 xputwchar(c | QUOTE);
1253 }
1254 if (*v)
1255 xputchar(sep | QUOTE);
1256 }
1257 done:
1258 if (sep && nonl == 0)
1259 xputchar('\n');
1260 else
1261 flush();
1262 if (globbed != NULL)
1263 cleanup_until(globbed);
1264 }
1265
1266 /* check whether an environment variable should invoke 'set_locale()' */
1267 static int
islocale_var(Char * var)1268 islocale_var(Char *var)
1269 {
1270 static Char *locale_vars[] = {
1271 STRLANG, STRLC_ALL, STRLC_CTYPE, STRLC_NUMERIC,
1272 STRLC_TIME, STRLC_COLLATE, STRLC_MESSAGES, STRLC_MONETARY, 0
1273 };
1274 Char **v;
1275
1276 for (v = locale_vars; *v; ++v)
1277 if (eq(var, *v))
1278 return 1;
1279 return 0;
1280 }
1281
1282 static void
xlate_cr_cleanup(void * dummy)1283 xlate_cr_cleanup(void *dummy)
1284 {
1285 USE(dummy);
1286 xlate_cr = 0;
1287 }
1288
1289 /*ARGSUSED*/
1290 void
doprintenv(Char ** v,struct command * c)1291 doprintenv(Char **v, struct command *c)
1292 {
1293 Char *e;
1294
1295 USE(c);
1296 v++;
1297 if (*v == 0) {
1298 Char **ep;
1299
1300 xlate_cr = 1;
1301 cleanup_push(&xlate_cr, xlate_cr_cleanup);
1302 for (ep = STR_environ; *ep; ep++) {
1303 if (setintr) {
1304 int old_pintr_disabled;
1305
1306 pintr_push_enable(&old_pintr_disabled);
1307 cleanup_until(&old_pintr_disabled);
1308 }
1309 xprintf("%" TCSH_S "\n", *ep);
1310 }
1311 cleanup_until(&xlate_cr);
1312 }
1313 else if ((e = tgetenv(*v)) != NULL) {
1314 int old_output_raw;
1315
1316 old_output_raw = output_raw;
1317 output_raw = 1;
1318 cleanup_push(&old_output_raw, output_raw_restore);
1319 xprintf("%" TCSH_S "\n", e);
1320 cleanup_until(&old_output_raw);
1321 }
1322 else
1323 setstatus(1);
1324 }
1325
1326 /* from "Karl Berry." <karl%mote.umb.edu@relay.cs.net> -- for NeXT things
1327 (and anything else with a modern compiler) */
1328
1329 /*ARGSUSED*/
1330 void
dosetenv(Char ** v,struct command * c)1331 dosetenv(Char **v, struct command *c)
1332 {
1333 Char *vp, *lp;
1334
1335 USE(c);
1336 if (*++v == 0) {
1337 doprintenv(--v, 0);
1338 return;
1339 }
1340
1341 vp = *v++;
1342 lp = vp;
1343
1344 if (!letter(*lp))
1345 stderror(ERR_NAME | ERR_VARBEGIN);
1346 do {
1347 lp++;
1348 } while (alnum(*lp) || *lp == '.');
1349 if (*lp != '\0')
1350 stderror(ERR_NAME | ERR_VARALNUM);
1351
1352 if ((lp = *v++) == 0)
1353 lp = STRNULL;
1354
1355 lp = globone(lp, G_APPEND);
1356 cleanup_push(lp, xfree);
1357 tsetenv(vp, lp);
1358 if (eq(vp, STRKPATH)) {
1359 importpath(lp);
1360 dohash(NULL, NULL);
1361 cleanup_until(lp);
1362 return;
1363 }
1364
1365 #ifdef apollo
1366 if (eq(vp, STRSYSTYPE)) {
1367 dohash(NULL, NULL);
1368 cleanup_until(lp);
1369 return;
1370 }
1371 #endif /* apollo */
1372
1373 /* dspkanji/dspmbyte autosetting */
1374 /* PATCH IDEA FROM Issei.Suzuki VERY THANKS */
1375 #if defined(DSPMBYTE)
1376 if (eq(vp, STRLANG) && !adrof(CHECK_MBYTEVAR)) {
1377 autoset_dspmbyte(lp);
1378 }
1379 #endif
1380
1381 if (islocale_var(vp)) {
1382 #ifdef NLS
1383 int k;
1384
1385 # ifdef SETLOCALEBUG
1386 dont_free = 1;
1387 # endif /* SETLOCALEBUG */
1388 (void) setlocale(LC_ALL, "");
1389 # ifdef LC_COLLATE
1390 (void) setlocale(LC_COLLATE, "");
1391 # endif
1392 # ifdef LC_CTYPE
1393 (void) setlocale(LC_CTYPE, ""); /* for iscntrl */
1394 # endif /* LC_CTYPE */
1395 # if defined(AUTOSET_KANJI)
1396 autoset_kanji();
1397 # endif /* AUTOSET_KANJI */
1398 # ifdef NLS_CATALOGS
1399 # ifdef LC_MESSAGES
1400 (void) setlocale(LC_MESSAGES, "");
1401 # endif /* LC_MESSAGES */
1402 nlsclose();
1403 nlsinit();
1404 # endif /* NLS_CATALOGS */
1405 # ifdef SETLOCALEBUG
1406 dont_free = 0;
1407 # endif /* SETLOCALEBUG */
1408 # ifdef STRCOLLBUG
1409 fix_strcoll_bug();
1410 # endif /* STRCOLLBUG */
1411 tw_cmd_free(); /* since the collation sequence has changed */
1412 for (k = 0200; k <= 0377 && !Isprint(CTL_ESC(k)); k++)
1413 continue;
1414 AsciiOnly = MB_CUR_MAX == 1 && k > 0377;
1415 #else /* !NLS */
1416 AsciiOnly = 0;
1417 #endif /* NLS */
1418 NLSMapsAreInited = 0;
1419 ed_Init();
1420 if (MapsAreInited && !NLSMapsAreInited)
1421 ed_InitNLSMaps();
1422 cleanup_until(lp);
1423 return;
1424 }
1425
1426 #ifdef NLS_CATALOGS
1427 if (eq(vp, STRNLSPATH)) {
1428 nlsclose();
1429 nlsinit();
1430 }
1431 #endif
1432
1433 if (eq(vp, STRNOREBIND)) {
1434 NoNLSRebind = 1;
1435 MapsAreInited = 0;
1436 NLSMapsAreInited = 0;
1437 ed_InitMaps();
1438 cleanup_until(lp);
1439 return;
1440 }
1441 #ifdef WINNT_NATIVE
1442 if (eq(vp, STRtcshlang)) {
1443 nlsinit();
1444 cleanup_until(lp);
1445 return;
1446 }
1447 #endif /* WINNT_NATIVE */
1448 if (eq(vp, STRKTERM)) {
1449 char *t;
1450
1451 setv(STRterm, quote(lp), VAR_READWRITE); /* lp memory used here */
1452 cleanup_ignore(lp);
1453 cleanup_until(lp);
1454 t = short2str(lp);
1455 if (noediting && strcmp(t, "unknown") != 0 && strcmp(t,"dumb") != 0) {
1456 editing = 1;
1457 noediting = 0;
1458 setNS(STRedit);
1459 }
1460 GotTermCaps = 0;
1461 ed_Init();
1462 return;
1463 }
1464
1465 if (eq(vp, STRKHOME)) {
1466 Char *canon;
1467 /*
1468 * convert to canonical pathname (possibly resolving symlinks)
1469 */
1470 cleanup_ignore(lp);
1471 canon = dcanon(lp, lp);
1472 cleanup_push(canon, xfree);
1473 setv(STRhome, quote(canon), VAR_READWRITE); /* lp memory used here */
1474 cleanup_ignore(canon);
1475 cleanup_until(canon);
1476
1477 /* fix directory stack for new tilde home */
1478 dtilde();
1479 return;
1480 }
1481
1482 if (eq(vp, STRKSHLVL)) {
1483 setv(STRshlvl, quote(lp), VAR_READWRITE); /* lp memory used here */
1484 cleanup_ignore(lp);
1485 cleanup_until(lp);
1486 return;
1487 }
1488
1489 if (eq(vp, STRKUSER)) {
1490 setv(STRuser, quote(lp), VAR_READWRITE); /* lp memory used here */
1491 cleanup_ignore(lp);
1492 cleanup_until(lp);
1493 return;
1494 }
1495
1496 if (eq(vp, STRKGROUP)) {
1497 setv(STRgroup, quote(lp), VAR_READWRITE); /* lp memory used here */
1498 cleanup_ignore(lp);
1499 cleanup_until(lp);
1500 return;
1501 }
1502
1503 #ifdef COLOR_LS_F
1504 if (eq(vp, STRLS_COLORS)) {
1505 parseLS_COLORS(lp);
1506 cleanup_until(lp);
1507 return;
1508 }
1509 if (eq(vp, STRLSCOLORS)) {
1510 parseLSCOLORS(lp);
1511 cleanup_until(lp);
1512 return;
1513 }
1514 #endif /* COLOR_LS_F */
1515
1516 #ifdef SIG_WINDOW
1517 /*
1518 * Load/Update $LINES $COLUMNS
1519 */
1520 if ((eq(lp, STRNULL) && (eq(vp, STRLINES) || eq(vp, STRCOLUMNS))) ||
1521 eq(vp, STRTERMCAP)) {
1522 cleanup_until(lp);
1523 check_window_size(1);
1524 return;
1525 }
1526
1527 /*
1528 * Change the size to the one directed by $LINES and $COLUMNS
1529 */
1530 if (eq(vp, STRLINES) || eq(vp, STRCOLUMNS)) {
1531 #if 0
1532 GotTermCaps = 0;
1533 #endif
1534 cleanup_until(lp);
1535 ed_Init();
1536 return;
1537 }
1538 #endif /* SIG_WINDOW */
1539 cleanup_until(lp);
1540 }
1541
1542 /*ARGSUSED*/
1543 void
dounsetenv(Char ** v,struct command * c)1544 dounsetenv(Char **v, struct command *c)
1545 {
1546 Char **ep, *p, *n, *name;
1547 int i, maxi;
1548
1549 USE(c);
1550 /*
1551 * Find the longest environment variable
1552 */
1553 for (maxi = 0, ep = STR_environ; *ep; ep++) {
1554 for (i = 0, p = *ep; *p && *p != '='; p++, i++)
1555 continue;
1556 if (i > maxi)
1557 maxi = i;
1558 }
1559
1560 name = xmalloc((maxi + 1) * sizeof(Char));
1561 cleanup_push(name, xfree);
1562
1563 while (++v && *v)
1564 for (maxi = 1; maxi;)
1565 for (maxi = 0, ep = STR_environ; *ep; ep++) {
1566 for (n = name, p = *ep; *p && *p != '='; *n++ = *p++)
1567 continue;
1568 *n = '\0';
1569 if (!Gmatch(name, *v))
1570 continue;
1571 maxi = 1;
1572
1573 /* Unset the name. This wasn't being done until
1574 * later but most of the stuff following won't
1575 * work (particularly the setlocale() and getenv()
1576 * stuff) as intended until the name is actually
1577 * removed. (sg)
1578 */
1579 Unsetenv(name);
1580
1581 if (eq(name, STRNOREBIND)) {
1582 NoNLSRebind = 0;
1583 MapsAreInited = 0;
1584 NLSMapsAreInited = 0;
1585 ed_InitMaps();
1586 }
1587 #ifdef apollo
1588 else if (eq(name, STRSYSTYPE))
1589 dohash(NULL, NULL);
1590 #endif /* apollo */
1591 else if (islocale_var(name)) {
1592 #ifdef NLS
1593 int k;
1594
1595 # ifdef SETLOCALEBUG
1596 dont_free = 1;
1597 # endif /* SETLOCALEBUG */
1598 (void) setlocale(LC_ALL, "");
1599 # ifdef LC_COLLATE
1600 (void) setlocale(LC_COLLATE, "");
1601 # endif
1602 # ifdef LC_CTYPE
1603 (void) setlocale(LC_CTYPE, ""); /* for iscntrl */
1604 # endif /* LC_CTYPE */
1605 # ifdef NLS_CATALOGS
1606 # ifdef LC_MESSAGES
1607 (void) setlocale(LC_MESSAGES, "");
1608 # endif /* LC_MESSAGES */
1609 nlsclose();
1610 nlsinit();
1611 # endif /* NLS_CATALOGS */
1612 # ifdef SETLOCALEBUG
1613 dont_free = 0;
1614 # endif /* SETLOCALEBUG */
1615 # ifdef STRCOLLBUG
1616 fix_strcoll_bug();
1617 # endif /* STRCOLLBUG */
1618 tw_cmd_free();/* since the collation sequence has changed */
1619 for (k = 0200; k <= 0377 && !Isprint(CTL_ESC(k)); k++)
1620 continue;
1621 AsciiOnly = MB_CUR_MAX == 1 && k > 0377;
1622 #else /* !NLS */
1623 AsciiOnly = getenv("LANG") == NULL &&
1624 getenv("LC_CTYPE") == NULL;
1625 #endif /* NLS */
1626 NLSMapsAreInited = 0;
1627 ed_Init();
1628 if (MapsAreInited && !NLSMapsAreInited)
1629 ed_InitNLSMaps();
1630
1631 }
1632 #ifdef WINNT_NATIVE
1633 else if (eq(name,(STRtcshlang))) {
1634 nls_dll_unload();
1635 nlsinit();
1636 }
1637 #endif /* WINNT_NATIVE */
1638 #ifdef COLOR_LS_F
1639 else if (eq(name, STRLS_COLORS))
1640 parseLS_COLORS(n);
1641 else if (eq(name, STRLSCOLORS))
1642 parseLSCOLORS(n);
1643 #endif /* COLOR_LS_F */
1644 #ifdef NLS_CATALOGS
1645 else if (eq(name, STRNLSPATH)) {
1646 nlsclose();
1647 nlsinit();
1648 }
1649 #endif
1650 /*
1651 * start again cause the environment changes
1652 */
1653 break;
1654 }
1655 cleanup_until(name);
1656 }
1657
1658 void
tsetenv(const Char * name,const Char * val)1659 tsetenv(const Char *name, const Char *val)
1660 {
1661 #ifdef SETENV_IN_LIB
1662 /*
1663 * XXX: This does not work right, since tcsh cannot track changes to
1664 * the environment this way. (the builtin setenv without arguments does
1665 * not print the right stuff neither does unsetenv). This was for Mach,
1666 * it is not needed anymore.
1667 */
1668 #undef setenv
1669 char *cname;
1670
1671 if (name == NULL)
1672 return;
1673 cname = strsave(short2str(name));
1674 setenv(cname, short2str(val), 1);
1675 xfree(cname);
1676 #else /* !SETENV_IN_LIB */
1677 Char **ep = STR_environ;
1678 const Char *ccp;
1679 Char *cp, *dp;
1680 Char *blk[2];
1681 Char **oep = ep;
1682
1683 #ifdef WINNT_NATIVE
1684 nt_set_env(name,val);
1685 #endif /* WINNT_NATIVE */
1686 for (; *ep; ep++) {
1687 #ifdef WINNT_NATIVE
1688 for (ccp = name, dp = *ep; *ccp && Tolower(*ccp & TRIM) == Tolower(*dp);
1689 ccp++, dp++)
1690 #else
1691 for (ccp = name, dp = *ep; *ccp && (*ccp & TRIM) == *dp; ccp++, dp++)
1692 #endif /* WINNT_NATIVE */
1693 continue;
1694 if (*ccp != 0 || *dp != '=')
1695 continue;
1696 cp = Strspl(STRequal, val);
1697 xfree(*ep);
1698 *ep = strip(Strspl(name, cp));
1699 xfree(cp);
1700 blkfree((Char **) environ);
1701 environ = short2blk(STR_environ);
1702 return;
1703 }
1704 cp = Strspl(name, STRequal);
1705 blk[0] = strip(Strspl(cp, val));
1706 xfree(cp);
1707 blk[1] = 0;
1708 STR_environ = blkspl(STR_environ, blk);
1709 blkfree((Char **) environ);
1710 environ = short2blk(STR_environ);
1711 xfree(oep);
1712 #endif /* SETENV_IN_LIB */
1713 }
1714
1715 void
Unsetenv(Char * name)1716 Unsetenv(Char *name)
1717 {
1718 Char **ep = STR_environ;
1719 Char *cp, *dp;
1720 Char **oep = ep;
1721
1722 #ifdef WINNT_NATIVE
1723 nt_set_env(name,NULL);
1724 #endif /*WINNT_NATIVE */
1725 for (; *ep; ep++) {
1726 for (cp = name, dp = *ep; *cp && *cp == *dp; cp++, dp++)
1727 continue;
1728 if (*cp != 0 || *dp != '=')
1729 continue;
1730 cp = *ep;
1731 *ep = 0;
1732 STR_environ = blkspl(STR_environ, ep + 1);
1733 blkfree((Char **) environ);
1734 environ = short2blk(STR_environ);
1735 *ep = cp;
1736 xfree(cp);
1737 xfree(oep);
1738 return;
1739 }
1740 }
1741
1742 /*ARGSUSED*/
1743 void
doumask(Char ** v,struct command * c)1744 doumask(Char **v, struct command *c)
1745 {
1746 Char *cp = v[1];
1747 int i;
1748
1749 USE(c);
1750 if (cp == 0) {
1751 i = (int)umask(0);
1752 (void) umask(i);
1753 xprintf("%o\n", i);
1754 return;
1755 }
1756 i = 0;
1757 while (Isdigit(*cp) && *cp != '8' && *cp != '9')
1758 i = i * 8 + *cp++ - '0';
1759 if (*cp || i < 0 || i > 0777)
1760 stderror(ERR_NAME | ERR_MASK);
1761 (void) umask(i);
1762 }
1763
1764 #ifndef HAVENOLIMIT
1765 # ifndef BSDLIMIT
1766 typedef long RLIM_TYPE;
1767 # ifdef _OSD_POSIX /* BS2000 */
1768 # include <ulimit.h>
1769 # endif
1770 # ifndef RLIM_INFINITY
1771 # if !defined(_MINIX) && !defined(__clipper__) && !defined(_CRAY)
1772 extern RLIM_TYPE ulimit();
1773 # endif /* ! _MINIX && !__clipper__ */
1774 # define RLIM_INFINITY 0x003fffff
1775 # define RLIMIT_FSIZE 1
1776 # endif /* RLIM_INFINITY */
1777 # ifdef aiws
1778 # define toset(a) (((a) == 3) ? 1004 : (a) + 1)
1779 # define RLIMIT_DATA 3
1780 # define RLIMIT_STACK 1005
1781 # else /* aiws */
1782 # define toset(a) ((a) + 1)
1783 # endif /* aiws */
1784 # else /* BSDLIMIT */
1785 # if (defined(BSD4_4) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || (HPUXVERSION >= 1100)) && !defined(__386BSD__)
1786 typedef rlim_t RLIM_TYPE;
1787 # else
1788 # if defined(SOLARIS2) || (defined(sgi) && SYSVREL > 3)
1789 typedef rlim_t RLIM_TYPE;
1790 # else
1791 # if defined(_SX)
1792 typedef long long RLIM_TYPE;
1793 # else /* !_SX */
1794 typedef unsigned long RLIM_TYPE;
1795 # endif /* _SX */
1796 # endif /* SOLARIS2 || (sgi && SYSVREL > 3) */
1797 # endif /* BSD4_4 && !__386BSD__ */
1798 # endif /* BSDLIMIT */
1799
1800 # if (HPUXVERSION > 700) && (HPUXVERSION < 1100) && defined(BSDLIMIT)
1801 /* Yes hpux8.0 has limits but <sys/resource.h> does not make them public */
1802 /* Yes, we could have defined _KERNEL, and -I/etc/conf/h, but is that better? */
1803 # ifndef RLIMIT_CPU
1804 # define RLIMIT_CPU 0
1805 # define RLIMIT_FSIZE 1
1806 # define RLIMIT_DATA 2
1807 # define RLIMIT_STACK 3
1808 # define RLIMIT_CORE 4
1809 # define RLIMIT_RSS 5
1810 # define RLIMIT_NOFILE 6
1811 # endif /* RLIMIT_CPU */
1812 # ifndef RLIM_INFINITY
1813 # define RLIM_INFINITY 0x7fffffff
1814 # endif /* RLIM_INFINITY */
1815 /*
1816 * old versions of HP/UX counted limits in 512 bytes
1817 */
1818 # ifndef SIGRTMIN
1819 # define FILESIZE512
1820 # endif /* SIGRTMIN */
1821 # endif /* (HPUXVERSION > 700) && (HPUXVERSION < 1100) && BSDLIMIT */
1822
1823 # if SYSVREL > 3 && defined(BSDLIMIT) && !defined(_SX)
1824 /* In order to use rusage, we included "/usr/ucbinclude/sys/resource.h" in */
1825 /* sh.h. However, some SVR4 limits are defined in <sys/resource.h>. Rather */
1826 /* than include both and get warnings, we define the extra SVR4 limits here. */
1827 /* XXX: I don't understand if RLIMIT_AS is defined, why don't we define */
1828 /* RLIMIT_VMEM based on it? */
1829 # ifndef RLIMIT_VMEM
1830 # define RLIMIT_VMEM 6
1831 # endif
1832 # ifndef RLIMIT_AS
1833 # define RLIMIT_AS RLIMIT_VMEM
1834 # endif
1835 # endif /* SYSVREL > 3 && BSDLIMIT */
1836
1837 # if (defined(__linux__) || defined(__GNU__) || defined(__GLIBC__))
1838 # if defined(RLIMIT_AS) && !defined(RLIMIT_VMEM)
1839 # define RLIMIT_VMEM RLIMIT_AS
1840 # endif
1841 /*
1842 * Oh well, <asm-generic/resource.h> has it, but <bits/resource.h> does not
1843 * Linux headers: When the left hand does not know what the right hand does.
1844 */
1845 # if defined(RLIMIT_RTPRIO) && !defined(RLIMIT_RTTIME)
1846 # define RLIMIT_RTTIME (RLIMIT_RTPRIO + 1)
1847 # endif
1848 # endif
1849
1850 struct limits limits[] =
1851 {
1852 # ifdef RLIMIT_CPU
1853 { RLIMIT_CPU, "cputime", 1, "seconds" },
1854 # endif /* RLIMIT_CPU */
1855
1856 # ifdef RLIMIT_FSIZE
1857 # ifndef aiws
1858 { RLIMIT_FSIZE, "filesize", 1024, "kbytes" },
1859 # else
1860 { RLIMIT_FSIZE, "filesize", 512, "blocks" },
1861 # endif /* aiws */
1862 # endif /* RLIMIT_FSIZE */
1863
1864 # ifdef RLIMIT_DATA
1865 { RLIMIT_DATA, "datasize", 1024, "kbytes" },
1866 # endif /* RLIMIT_DATA */
1867
1868 # ifdef RLIMIT_STACK
1869 # ifndef aiws
1870 { RLIMIT_STACK, "stacksize", 1024, "kbytes" },
1871 # else
1872 { RLIMIT_STACK, "stacksize", 1024 * 1024, "kbytes"},
1873 # endif /* aiws */
1874 # endif /* RLIMIT_STACK */
1875
1876 # ifdef RLIMIT_CORE
1877 { RLIMIT_CORE, "coredumpsize", 1024, "kbytes" },
1878 # endif /* RLIMIT_CORE */
1879
1880 # ifdef RLIMIT_RSS
1881 { RLIMIT_RSS, "memoryuse", 1024, "kbytes" },
1882 # endif /* RLIMIT_RSS */
1883
1884 # ifdef RLIMIT_UMEM
1885 { RLIMIT_UMEM, "memoryuse", 1024, "kbytes" },
1886 # endif /* RLIMIT_UMEM */
1887
1888 # ifdef RLIMIT_VMEM
1889 { RLIMIT_VMEM, "vmemoryuse", 1024, "kbytes" },
1890 # endif /* RLIMIT_VMEM */
1891
1892 # if defined(RLIMIT_HEAP) /* found on BS2000/OSD systems */
1893 { RLIMIT_HEAP, "heapsize", 1024, "kbytes" },
1894 # endif /* RLIMIT_HEAP */
1895
1896 # ifdef RLIMIT_NOFILE
1897 { RLIMIT_NOFILE, "descriptors", 1, "" },
1898 # endif /* RLIMIT_NOFILE */
1899
1900 # ifdef RLIMIT_NPTS
1901 { RLIMIT_NPTS, "pseudoterminals", 1, "" },
1902 # endif /* RLIMIT_NPTS */
1903
1904 # ifdef RLIMIT_KQUEUES
1905 { RLIMIT_KQUEUES, "kqueues", 1, "" },
1906 # endif /* RLIMIT_KQUEUES */
1907
1908 # ifdef RLIMIT_CONCUR
1909 { RLIMIT_CONCUR, "concurrency", 1, "thread(s)" },
1910 # endif /* RLIMIT_CONCUR */
1911
1912 # ifdef RLIMIT_MEMLOCK
1913 { RLIMIT_MEMLOCK, "memorylocked", 1024, "kbytes" },
1914 # endif /* RLIMIT_MEMLOCK */
1915
1916 # ifdef RLIMIT_NPROC
1917 { RLIMIT_NPROC, "maxproc", 1, "" },
1918 # endif /* RLIMIT_NPROC */
1919
1920 # ifdef RLIMIT_NTHR
1921 { RLIMIT_NTHR, "maxthread", 1, "" },
1922 # endif /* RLIMIT_NTHR */
1923
1924 # if defined(RLIMIT_OFILE) && !defined(RLIMIT_NOFILE)
1925 { RLIMIT_OFILE, "openfiles", 1, "" },
1926 # endif /* RLIMIT_OFILE && !defined(RLIMIT_NOFILE) */
1927
1928 # ifdef RLIMIT_SBSIZE
1929 { RLIMIT_SBSIZE, "sbsize", 1, "" },
1930 # endif /* RLIMIT_SBSIZE */
1931
1932 # ifdef RLIMIT_SWAP
1933 { RLIMIT_SWAP, "swapsize", 1024, "kbytes" },
1934 # endif /* RLIMIT_SWAP */
1935
1936 # ifdef RLIMIT_LOCKS
1937 { RLIMIT_LOCKS, "maxlocks", 1, "" },
1938 # endif /* RLIMIT_LOCKS */
1939
1940 # ifdef RLIMIT_POSIXLOCKS
1941 { RLIMIT_POSIXLOCKS,"posixlocks", 1, "" },
1942 # endif /* RLIMIT_POSIXLOCKS */
1943
1944 # ifdef RLIMIT_SIGPENDING
1945 { RLIMIT_SIGPENDING,"maxsignal", 1, "" },
1946 # endif /* RLIMIT_SIGPENDING */
1947
1948 # ifdef RLIMIT_MSGQUEUE
1949 { RLIMIT_MSGQUEUE, "maxmessage", 1, "" },
1950 # endif /* RLIMIT_MSGQUEUE */
1951
1952 # ifdef RLIMIT_NICE
1953 { RLIMIT_NICE, "maxnice", 1, "" },
1954 # endif /* RLIMIT_NICE */
1955
1956 # ifdef RLIMIT_RTPRIO
1957 { RLIMIT_RTPRIO, "maxrtprio", 1, "" },
1958 # endif /* RLIMIT_RTPRIO */
1959
1960 # ifdef RLIMIT_RTTIME
1961 { RLIMIT_RTTIME, "maxrttime", 1, "usec" },
1962 # endif /* RLIMIT_RTTIME */
1963
1964 { -1, NULL, 0, NULL }
1965 };
1966
1967 static struct limits *findlim (Char *);
1968 static RLIM_TYPE getval (struct limits *, Char **);
1969 static int strtail (Char *, const char *);
1970 static void limtail (Char *, const char *);
1971 static void limtail2 (Char *, const char *, const char *);
1972 static void plim (struct limits *, int);
1973 static int setlim (struct limits *, int, RLIM_TYPE);
1974
1975 #ifdef convex
1976 static RLIM_TYPE
restrict_limit(double value)1977 restrict_limit(double value)
1978 {
1979 /*
1980 * is f too large to cope with? return the maximum or minimum int
1981 */
1982 if (value > (double) INT_MAX)
1983 return (RLIM_TYPE) INT_MAX;
1984 else if (value < (double) INT_MIN)
1985 return (RLIM_TYPE) INT_MIN;
1986 else
1987 return (RLIM_TYPE) value;
1988 }
1989 #else /* !convex */
1990 # define restrict_limit(x) ((RLIM_TYPE) (x))
1991 #endif /* convex */
1992
1993
1994 static struct limits *
findlim(Char * cp)1995 findlim(Char *cp)
1996 {
1997 struct limits *lp, *res;
1998
1999 res = NULL;
2000 for (lp = limits; lp->limconst >= 0; lp++)
2001 if (prefix(cp, str2short(lp->limname))) {
2002 if (res)
2003 stderror(ERR_NAME | ERR_AMBIG);
2004 res = lp;
2005 }
2006 if (res)
2007 return (res);
2008 stderror(ERR_NAME | ERR_LIMIT);
2009 /* NOTREACHED */
2010 return (0);
2011 }
2012
2013 /*ARGSUSED*/
2014 void
dolimit(Char ** v,struct command * c)2015 dolimit(Char **v, struct command *c)
2016 {
2017 struct limits *lp;
2018 RLIM_TYPE limit;
2019 int hard = 0;
2020
2021 USE(c);
2022 v++;
2023 if (*v && eq(*v, STRmh)) {
2024 hard = 1;
2025 v++;
2026 }
2027 if (*v == 0) {
2028 for (lp = limits; lp->limconst >= 0; lp++)
2029 plim(lp, hard);
2030 return;
2031 }
2032 lp = findlim(v[0]);
2033 if (v[1] == 0) {
2034 plim(lp, hard);
2035 return;
2036 }
2037 limit = getval(lp, v + 1);
2038 if (setlim(lp, hard, limit) < 0)
2039 stderror(ERR_SILENT);
2040 }
2041
2042 static RLIM_TYPE
getval(struct limits * lp,Char ** v)2043 getval(struct limits *lp, Char **v)
2044 {
2045 float f;
2046 Char *cp = *v++;
2047
2048 f = atof(short2str(cp));
2049
2050 # ifdef convex
2051 /*
2052 * is f too large to cope with. limit f to minint, maxint - X-6768 by
2053 * strike
2054 */
2055 if ((f < (double) INT_MIN) || (f > (double) INT_MAX)) {
2056 stderror(ERR_NAME | ERR_TOOLARGE);
2057 }
2058 # endif /* convex */
2059
2060 while (Isdigit(*cp) || *cp == '.' || *cp == 'e' || *cp == 'E')
2061 cp++;
2062 if (*cp == 0) {
2063 if (*v == 0)
2064 return restrict_limit((f * lp->limdiv) + 0.5);
2065 cp = *v;
2066 }
2067 switch (*cp) {
2068 # ifdef RLIMIT_CPU
2069 case ':':
2070 if (lp->limconst != RLIMIT_CPU)
2071 goto badscal;
2072 return f == 0.0 ? (RLIM_TYPE) 0 : restrict_limit((f * 60.0 + atof(short2str(cp + 1))));
2073 case 'h':
2074 if (lp->limconst != RLIMIT_CPU)
2075 goto badscal;
2076 limtail(cp, "hours");
2077 f *= 3600.0;
2078 break;
2079 # endif /* RLIMIT_CPU */
2080 case 'm':
2081 # ifdef RLIMIT_CPU
2082 if (lp->limconst == RLIMIT_CPU) {
2083 limtail(cp, "minutes");
2084 f *= 60.0;
2085 break;
2086 }
2087 # endif /* RLIMIT_CPU */
2088 limtail2(cp, "megabytes", "mbytes");
2089 f *= 1024.0 * 1024.0;
2090 break;
2091 # ifdef RLIMIT_CPU
2092 case 's':
2093 if (lp->limconst != RLIMIT_CPU)
2094 goto badscal;
2095 limtail(cp, "seconds");
2096 break;
2097 # endif /* RLIMIT_CPU */
2098 case 'G':
2099 *cp = 'g';
2100 /*FALLTHROUGH*/
2101 case 'g':
2102 # ifdef RLIMIT_CPU
2103 if (lp->limconst == RLIMIT_CPU)
2104 goto badscal;
2105 # endif /* RLIMIT_CPU */
2106 limtail2(cp, "gigabytes", "gbytes");
2107 f *= 1024.0 * 1024.0 * 1024.0;
2108 break;
2109 case 'M':
2110 # ifdef RLIMIT_CPU
2111 if (lp->limconst == RLIMIT_CPU)
2112 goto badscal;
2113 # endif /* RLIMIT_CPU */
2114 *cp = 'm';
2115 limtail2(cp, "megabytes", "mbytes");
2116 f *= 1024.0 * 1024.0;
2117 break;
2118 case 'k':
2119 # ifdef RLIMIT_CPU
2120 if (lp->limconst == RLIMIT_CPU)
2121 goto badscal;
2122 # endif /* RLIMIT_CPU */
2123 limtail2(cp, "kilobytes", "kbytes");
2124 f *= 1024.0;
2125 break;
2126 case 'b':
2127 # ifdef RLIMIT_CPU
2128 if (lp->limconst == RLIMIT_CPU)
2129 goto badscal;
2130 # endif /* RLIMIT_CPU */
2131 limtail(cp, "blocks");
2132 f *= 512.0;
2133 break;
2134 case 'u':
2135 limtail(cp, "unlimited");
2136 return ((RLIM_TYPE) RLIM_INFINITY);
2137 default:
2138 # ifdef RLIMIT_CPU
2139 badscal:
2140 # endif /* RLIMIT_CPU */
2141 stderror(ERR_NAME | ERR_SCALEF);
2142 }
2143 # ifdef convex
2144 return f == 0.0 ? (RLIM_TYPE) 0 : restrict_limit((f + 0.5));
2145 # else
2146 f += 0.5;
2147 if (f > (float) ((RLIM_TYPE) RLIM_INFINITY))
2148 return ((RLIM_TYPE) RLIM_INFINITY);
2149 else
2150 return ((RLIM_TYPE) f);
2151 # endif /* convex */
2152 }
2153
2154 static int
strtail(Char * cp,const char * str)2155 strtail(Char *cp, const char *str)
2156 {
2157 while (*cp && *cp == (Char)*str)
2158 cp++, str++;
2159 return (*cp != '\0');
2160 }
2161
2162 static void
limtail(Char * cp,const char * str)2163 limtail(Char *cp, const char *str)
2164 {
2165 if (strtail(cp, str))
2166 stderror(ERR_BADSCALE, str);
2167 }
2168
2169 static void
limtail2(Char * cp,const char * str1,const char * str2)2170 limtail2(Char *cp, const char *str1, const char *str2)
2171 {
2172 if (strtail(cp, str1) && strtail(cp, str2))
2173 stderror(ERR_BADSCALE, str1);
2174 }
2175
2176 /*ARGSUSED*/
2177 static void
plim(struct limits * lp,int hard)2178 plim(struct limits *lp, int hard)
2179 {
2180 # ifdef BSDLIMIT
2181 struct rlimit rlim;
2182 # endif /* BSDLIMIT */
2183 RLIM_TYPE limit;
2184 int xdiv = lp->limdiv;
2185
2186 xprintf("%-13.13s", lp->limname);
2187
2188 # ifndef BSDLIMIT
2189 limit = ulimit(lp->limconst, 0);
2190 # ifdef aiws
2191 if (lp->limconst == RLIMIT_DATA)
2192 limit -= 0x20000000;
2193 # endif /* aiws */
2194 # else /* BSDLIMIT */
2195 (void) getrlimit(lp->limconst, &rlim);
2196 limit = hard ? rlim.rlim_max : rlim.rlim_cur;
2197 # endif /* BSDLIMIT */
2198
2199 # if !defined(BSDLIMIT) || defined(FILESIZE512)
2200 /*
2201 * Christos: filesize comes in 512 blocks. we divide by 2 to get 1024
2202 * blocks. Note we cannot pre-multiply cause we might overflow (A/UX)
2203 */
2204 if (lp->limconst == RLIMIT_FSIZE) {
2205 if (limit >= (RLIM_INFINITY / 512))
2206 limit = RLIM_INFINITY;
2207 else
2208 xdiv = (xdiv == 1024 ? 2 : 1);
2209 }
2210 # endif /* !BSDLIMIT || FILESIZE512 */
2211
2212 if (limit == RLIM_INFINITY)
2213 xprintf("unlimited");
2214 else
2215 # if defined(RLIMIT_CPU) && defined(_OSD_POSIX)
2216 if (lp->limconst == RLIMIT_CPU &&
2217 (unsigned long)limit >= 0x7ffffffdUL)
2218 xprintf("unlimited");
2219 else
2220 # endif
2221 # ifdef RLIMIT_CPU
2222 if (lp->limconst == RLIMIT_CPU)
2223 psecs(limit);
2224 else
2225 # endif /* RLIMIT_CPU */
2226 xprintf("%ld %s", (long) (limit / xdiv), lp->limscale);
2227 xputchar('\n');
2228 }
2229
2230 /*ARGSUSED*/
2231 void
dounlimit(Char ** v,struct command * c)2232 dounlimit(Char **v, struct command *c)
2233 {
2234 struct limits *lp;
2235 int lerr = 0;
2236 int hard = 0;
2237 int force = 0;
2238
2239 USE(c);
2240 while (*++v && **v == '-') {
2241 Char *vp = *v;
2242 while (*++vp)
2243 switch (*vp) {
2244 case 'f':
2245 force = 1;
2246 break;
2247 case 'h':
2248 hard = 1;
2249 break;
2250 default:
2251 stderror(ERR_ULIMUS);
2252 break;
2253 }
2254 }
2255
2256 if (*v == 0) {
2257 for (lp = limits; lp->limconst >= 0; lp++)
2258 if (setlim(lp, hard, (RLIM_TYPE) RLIM_INFINITY) < 0)
2259 lerr++;
2260 if (!force && lerr)
2261 stderror(ERR_SILENT);
2262 return;
2263 }
2264 while (*v) {
2265 lp = findlim(*v++);
2266 if (setlim(lp, hard, (RLIM_TYPE) RLIM_INFINITY) < 0 && !force)
2267 stderror(ERR_SILENT);
2268 }
2269 }
2270
2271 static int
setlim(struct limits * lp,int hard,RLIM_TYPE limit)2272 setlim(struct limits *lp, int hard, RLIM_TYPE limit)
2273 {
2274 # ifdef BSDLIMIT
2275 struct rlimit rlim;
2276
2277 (void) getrlimit(lp->limconst, &rlim);
2278
2279 # ifdef FILESIZE512
2280 /* Even though hpux has setrlimit(), it expects fsize in 512 byte blocks */
2281 if (limit != RLIM_INFINITY && lp->limconst == RLIMIT_FSIZE)
2282 limit /= 512;
2283 # endif /* FILESIZE512 */
2284 if (hard)
2285 rlim.rlim_max = limit;
2286 else if (limit == RLIM_INFINITY && euid != 0)
2287 rlim.rlim_cur = rlim.rlim_max;
2288 else
2289 rlim.rlim_cur = limit;
2290
2291 if (rlim.rlim_cur > rlim.rlim_max)
2292 rlim.rlim_max = rlim.rlim_cur;
2293
2294 if (setrlimit(lp->limconst, &rlim) < 0) {
2295 # else /* BSDLIMIT */
2296 if (limit != RLIM_INFINITY && lp->limconst == RLIMIT_FSIZE)
2297 limit /= 512;
2298 # ifdef aiws
2299 if (lp->limconst == RLIMIT_DATA)
2300 limit += 0x20000000;
2301 # endif /* aiws */
2302 if (ulimit(toset(lp->limconst), limit) < 0) {
2303 # endif /* BSDLIMIT */
2304 int err;
2305 char *op, *type;
2306
2307 err = errno;
2308 op = strsave(limit == RLIM_INFINITY ? CGETS(15, 2, "remove") :
2309 CGETS(15, 3, "set"));
2310 cleanup_push(op, xfree);
2311 type = strsave(hard ? CGETS(15, 4, " hard") : "");
2312 cleanup_push(type, xfree);
2313 xprintf(CGETS(15, 1, "%s: %s: Can't %s%s limit (%s)\n"), bname,
2314 lp->limname, op, type, strerror(err));
2315 cleanup_until(op);
2316 return (-1);
2317 }
2318 return (0);
2319 }
2320
2321 #endif /* !HAVENOLIMIT */
2322
2323 /*ARGSUSED*/
2324 void
2325 dosuspend(Char **v, struct command *c)
2326 {
2327 #ifdef BSDJOBS
2328 struct sigaction old;
2329 #endif /* BSDJOBS */
2330
2331 USE(c);
2332 USE(v);
2333
2334 if (loginsh)
2335 stderror(ERR_SUSPLOG);
2336 untty();
2337
2338 #ifdef BSDJOBS
2339 sigaction(SIGTSTP, NULL, &old);
2340 signal(SIGTSTP, SIG_DFL);
2341 (void) kill(0, SIGTSTP);
2342 /* the shell stops here */
2343 sigaction(SIGTSTP, &old, NULL);
2344 #else /* !BSDJOBS */
2345 stderror(ERR_JOBCONTROL);
2346 #endif /* BSDJOBS */
2347
2348 #ifdef BSDJOBS
2349 if (tpgrp != -1) {
2350 if (grabpgrp(FSHTTY, opgrp) == -1)
2351 stderror(ERR_SYSTEM, "tcgetpgrp", strerror(errno));
2352 (void) setpgid(0, shpgrp);
2353 (void) tcsetpgrp(FSHTTY, shpgrp);
2354 }
2355 #endif /* BSDJOBS */
2356 (void) setdisc(FSHTTY);
2357 }
2358
2359 /* This is the dreaded EVAL built-in.
2360 * If you don't fiddle with file descriptors, and reset didfds,
2361 * this command will either ignore redirection inside or outside
2362 * its arguments, e.g. eval "date >x" vs. eval "date" >x
2363 * The stuff here seems to work, but I did it by trial and error rather
2364 * than really knowing what was going on. If tpgrp is zero, we are
2365 * probably a background eval, e.g. "eval date &", and we want to
2366 * make sure that any processes we start stay in our pgrp.
2367 * This is also the case for "time eval date" -- stay in same pgrp.
2368 * Otherwise, under stty tostop, processes will stop in the wrong
2369 * pgrp, with no way for the shell to get them going again. -IAN!
2370 */
2371
2372 struct doeval_state
2373 {
2374 Char **evalvec, *evalp;
2375 int didfds;
2376 #ifndef CLOSE_ON_EXEC
2377 int didcch;
2378 #endif
2379 int saveIN, saveOUT, saveDIAG;
2380 int SHIN, SHOUT, SHDIAG;
2381 };
2382
2383 static void
2384 doeval_cleanup(void *xstate)
2385 {
2386 struct doeval_state *state;
2387
2388 state = xstate;
2389 evalvec = state->evalvec;
2390 evalp = state->evalp;
2391 doneinp = 0;
2392 #ifndef CLOSE_ON_EXEC
2393 didcch = state->didcch;
2394 #endif /* CLOSE_ON_EXEC */
2395 didfds = state->didfds;
2396 if (state->saveIN != SHIN)
2397 xclose(SHIN);
2398 if (state->saveOUT != SHOUT)
2399 xclose(SHOUT);
2400 if (state->saveDIAG != SHDIAG)
2401 xclose(SHDIAG);
2402 close_on_exec(SHIN = dmove(state->saveIN, state->SHIN), 1);
2403 close_on_exec(SHOUT = dmove(state->saveOUT, state->SHOUT), 1);
2404 close_on_exec(SHDIAG = dmove(state->saveDIAG, state->SHDIAG), 1);
2405 if (didfds) {
2406 close_on_exec(dcopy(SHIN, 0), 1);
2407 close_on_exec(dcopy(SHOUT, 1), 1);
2408 close_on_exec(dcopy(SHDIAG, 2), 1);
2409 }
2410 }
2411
2412 static Char **Ggv;
2413 /*ARGSUSED*/
2414 void
2415 doeval(Char **v, struct command *c)
2416 {
2417 struct doeval_state state;
2418 int gflag, my_reenter;
2419 Char **gv;
2420 jmp_buf_t osetexit;
2421
2422 USE(c);
2423 v++;
2424 if (*v == 0)
2425 return;
2426 gflag = tglob(v);
2427 if (gflag) {
2428 gv = v = globall(v, gflag);
2429 if (v == 0)
2430 stderror(ERR_NOMATCH);
2431 cleanup_push(gv, blk_cleanup);
2432 v = copyblk(v);
2433 }
2434 else {
2435 gv = NULL;
2436 v = copyblk(v);
2437 trim(v);
2438 }
2439
2440 Ggv = gv;
2441 state.evalvec = evalvec;
2442 state.evalp = evalp;
2443 state.didfds = didfds;
2444 #ifndef CLOSE_ON_EXEC
2445 state.didcch = didcch;
2446 #endif /* CLOSE_ON_EXEC */
2447 state.SHIN = SHIN;
2448 state.SHOUT = SHOUT;
2449 state.SHDIAG = SHDIAG;
2450
2451 (void)close_on_exec(state.saveIN = dcopy(SHIN, -1), 1);
2452 (void)close_on_exec(state.saveOUT = dcopy(SHOUT, -1), 1);
2453 (void)close_on_exec(state.saveDIAG = dcopy(SHDIAG, -1), 1);
2454
2455 cleanup_push(&state, doeval_cleanup);
2456
2457 getexit(osetexit);
2458
2459 /* PWP: setjmp/longjmp bugfix for optimizing compilers */
2460 #ifdef cray
2461 my_reenter = 1; /* assume non-zero return val */
2462 if (setexit() == 0) {
2463 my_reenter = 0; /* Oh well, we were wrong */
2464 #else /* !cray */
2465 if ((my_reenter = setexit()) == 0) {
2466 #endif /* cray */
2467 evalvec = v;
2468 evalp = 0;
2469 (void)close_on_exec(SHIN = dcopy(0, -1), 1);
2470 (void)close_on_exec(SHOUT = dcopy(1, -1), 1);
2471 (void)close_on_exec(SHDIAG = dcopy(2, -1), 1);
2472 #ifndef CLOSE_ON_EXEC
2473 didcch = 0;
2474 #endif /* CLOSE_ON_EXEC */
2475 didfds = 0;
2476 gv = Ggv;
2477 process(0);
2478 Ggv = gv;
2479 }
2480
2481 if (my_reenter == 0) {
2482 cleanup_until(&state);
2483 if (Ggv)
2484 cleanup_until(Ggv);
2485 }
2486
2487 resexit(osetexit);
2488 if (my_reenter)
2489 stderror(ERR_SILENT);
2490 }
2491
2492 /*************************************************************************/
2493 /* print list of builtin commands */
2494
2495 static void
2496 lbuffed_cleanup (void *dummy)
2497 {
2498 USE(dummy);
2499 lbuffed = 1;
2500 }
2501
2502 /*ARGSUSED*/
2503 void
2504 dobuiltins(Char **v, struct command *c)
2505 {
2506 /* would use print_by_column() in tw.parse.c but that assumes
2507 * we have an array of Char * to pass.. (sg)
2508 */
2509 const struct biltins *b;
2510 int row, col, columns, rows;
2511 unsigned int w, maxwidth;
2512
2513 USE(c);
2514 USE(v);
2515 lbuffed = 0; /* turn off line buffering */
2516 cleanup_push(&lbuffed, lbuffed_cleanup);
2517
2518 /* find widest string */
2519 for (maxwidth = 0, b = bfunc; b < &bfunc[nbfunc]; ++b)
2520 maxwidth = max(maxwidth, strlen(b->bname));
2521 ++maxwidth; /* for space */
2522
2523 columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */
2524 if (!columns)
2525 columns = 1;
2526 rows = (nbfunc + (columns - 1)) / columns;
2527
2528 for (b = bfunc, row = 0; row < rows; row++) {
2529 for (col = 0; col < columns; col++) {
2530 if (b < &bfunc[nbfunc]) {
2531 w = strlen(b->bname);
2532 xprintf("%s", b->bname);
2533 if (col < (columns - 1)) /* Not last column? */
2534 for (; w < maxwidth; w++)
2535 xputchar(' ');
2536 ++b;
2537 }
2538 }
2539 if (row < (rows - 1)) {
2540 if (Tty_raw_mode)
2541 xputchar('\r');
2542 xputchar('\n');
2543 }
2544 }
2545 #ifdef WINNT_NATIVE
2546 nt_print_builtins(maxwidth);
2547 #else
2548 if (Tty_raw_mode)
2549 xputchar('\r');
2550 xputchar('\n');
2551 #endif /* WINNT_NATIVE */
2552
2553 cleanup_until(&lbuffed); /* turn back on line buffering */
2554 flush();
2555 }
2556
2557 #ifdef NLS_CATALOGS
2558 char *
2559 xcatgets(nl_catd ctd, int set_id, int msg_id, const char *s)
2560 {
2561 char *res;
2562
2563 errno = 0;
2564 while ((res = catgets(ctd, set_id, msg_id, s)) == s && errno == EINTR) {
2565 handle_pending_signals();
2566 errno = 0;
2567 }
2568 return res;
2569 }
2570
2571
2572 # if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
2573 char *
2574 iconv_catgets(nl_catd ctd, int set_id, int msg_id, const char *s)
2575 {
2576 static char *buf = NULL;
2577 static size_t buf_size = 0;
2578
2579 char *orig, *dest, *p;
2580 ICONV_CONST char *src;
2581 size_t src_size, dest_size;
2582
2583 orig = xcatgets(ctd, set_id, msg_id, s);
2584 if (catgets_iconv == (iconv_t)-1 || orig == s)
2585 return orig;
2586 src = orig;
2587 src_size = strlen(src) + 1;
2588 if (buf == NULL && (buf = xmalloc(buf_size = src_size + 32)) == NULL)
2589 return orig;
2590 dest = buf;
2591 while (src_size != 0) {
2592 dest_size = buf + buf_size - dest;
2593 if (iconv(catgets_iconv, &src, &src_size, &dest, &dest_size)
2594 == (size_t)-1) {
2595 switch (errno) {
2596 case E2BIG:
2597 if ((p = xrealloc(buf, buf_size * 2)) == NULL)
2598 return orig;
2599 buf_size *= 2;
2600 dest = p + (dest - buf);
2601 buf = p;
2602 break;
2603
2604 case EILSEQ: case EINVAL: default:
2605 return orig;
2606 }
2607 }
2608 }
2609 return buf;
2610 }
2611 # endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
2612 #endif /* NLS_CATALOGS */
2613
2614 void
2615 nlsinit(void)
2616 {
2617 #ifdef NLS_CATALOGS
2618 static const char default_catalog[] = "tcsh";
2619
2620 char *catalog = (char *)(intptr_t)default_catalog;
2621
2622 if (adrof(STRcatalog) != NULL)
2623 catalog = xasprintf("tcsh.%s", short2str(varval(STRcatalog)));
2624 #ifdef NL_CAT_LOCALE /* POSIX-compliant. */
2625 /*
2626 * Check if LC_MESSAGES is set in the environment and use it, if so.
2627 * If not, fall back to the setting of LANG.
2628 */
2629 catd = catopen(catalog, tgetenv(STRLC_MESSAGES) ? NL_CAT_LOCALE : 0);
2630 #else /* pre-POSIX */
2631 # ifndef MCLoadBySet
2632 # define MCLoadBySet 0
2633 # endif
2634 catd = catopen(catalog, MCLoadBySet);
2635 #endif
2636 if (catalog != default_catalog)
2637 xfree(catalog);
2638 #if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
2639 /* xcatgets (), not CGETS, the charset name should be in ASCII anyway. */
2640 catgets_iconv = iconv_open (nl_langinfo (CODESET),
2641 xcatgets(catd, 255, 1, "UTF-8"));
2642 #endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
2643 #endif /* NLS_CATALOGS */
2644 #ifdef WINNT_NATIVE
2645 nls_dll_init();
2646 #endif /* WINNT_NATIVE */
2647 errinit(); /* init the errorlist in correct locale */
2648 mesginit(); /* init the messages for signals */
2649 dateinit(); /* init the messages for dates */
2650 editinit(); /* init the editor messages */
2651 terminit(); /* init the termcap messages */
2652 }
2653
2654 void
2655 nlsclose(void)
2656 {
2657 #ifdef NLS_CATALOGS
2658 #if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
2659 if (catgets_iconv != (iconv_t)-1) {
2660 iconv_close(catgets_iconv);
2661 catgets_iconv = (iconv_t)-1;
2662 }
2663 #endif /* HAVE_ICONV && HAVE_NL_LANGINFO */
2664 if (catd != (nl_catd)-1) {
2665 /*
2666 * catclose can call other functions which can call longjmp
2667 * making us re-enter this code. Prevent infinite recursion
2668 * by resetting catd. Problem reported and solved by:
2669 * Gerhard Niklasch
2670 */
2671 nl_catd oldcatd = catd;
2672 catd = (nl_catd)-1;
2673 while (catclose(oldcatd) == -1 && errno == EINTR)
2674 handle_pending_signals();
2675 }
2676 #endif /* NLS_CATALOGS */
2677 }
2678
2679 int
2680 getYN(const char *prompt)
2681 {
2682 int doit;
2683 char c;
2684
2685 xprintf("%s", prompt);
2686 flush();
2687 (void) force_read(SHIN, &c, sizeof(c));
2688 /*
2689 * Perhaps we should use the yesexpr from the
2690 * actual locale
2691 */
2692 doit = (strchr(CGETS(22, 14, "Yy"), c) != NULL);
2693 while (c != '\n' && force_read(SHIN, &c, sizeof(c)) == sizeof(c))
2694 continue;
2695 return doit;
2696 }
2697