2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these libraries and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $XConsortium: init.c /main/4 1995/11/17 15:16:52 rswiston $ */
24 /***************************************************************
26 * AT&T - PROPRIETARY *
28 * THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF *
29 * AT&T BELL LABORATORIES *
30 * AND IS NOT TO BE DISCLOSED OR USED EXCEPT IN *
31 * ACCORDANCE WITH APPLICABLE AGREEMENTS *
33 * Copyright (c) 1995 AT&T Corp. *
34 * Unpublished & Not for Publication *
35 * All Rights Reserved *
37 * The copyright notice above does not evidence any *
38 * actual or intended publication of such source code *
40 * This software was created by the *
41 * Advanced Software Technology Department *
42 * AT&T Bell Laboratories *
44 * For further information contact *
45 * {research,attmail}!dgk *
47 ***************************************************************/
49 /* : : generated by proto : : */
51 #if !defined(__PROTO__)
52 #if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
53 #if defined(__cplusplus)
54 #define __MANGLE__ "C"
59 #define __PROTO__(x) x
61 #define __PARAM__(n,o) n
62 #if !defined(__STDC__) && !defined(__cplusplus)
63 #if !defined(c_plusplus)
74 #define __PROTO__(x) ()
75 #define __OTORP__(x) x
76 #define __PARAM__(n,o) o
84 #if defined(__cplusplus) || defined(c_plusplus)
85 #define __VARARG__ ...
89 #if defined(__STDARG__)
90 #define __VA_START__(p,a) va_start(p,a)
92 #define __VA_START__(p,a) va_start(p)
98 #include "variables.h"
104 #include "FEATURE/time"
105 #include "FEATURE/dynamic"
106 #include "lexstates.h"
107 #include "FEATURE/locale"
108 #include "national.h"
110 #if _hdr_wchar && _lib_wctype && _lib_iswctype
111 /* on linux wchar.h can include FILE without stdio.h which clashes with sfio_t */
113 #ifndef __FILE_defined
114 #define __FILE_defined 1
119 # define isalpha(x) iswalpha(x)
121 # define isblank(x) iswblank(x)
125 iswblank __PARAM__((wint_t wc), (wc)) __OTORP__(wint_t wc;){
126 static int initialized;
132 wt = wctype("blank");
134 return(iswctype(wc, wt));
140 # define isblank(x) ((x)==' '||(x)=='\t')
147 # define LC_MESSAGES LC_ALL
148 # endif /* LC_MESSAGES */
149 #endif /* _hdr_locale */
151 #define RANDMASK 0x7fff
156 extern __MANGLE__ char **environ;
158 extern __MANGLE__ int Mt_certify;
161 static void env_init __PROTO__((void));
162 static void nv_init __PROTO__((void));
163 static Hashtab_t *inittree __PROTO__((const struct shtable2*));
165 static const char rsh_pattern[] = "@(rk|kr|r)sh";
166 static int rand_shift;
167 static Namval_t *ifsnp;
171 * Invalidate all path name bindings
173 static void rehash __PARAM__((register Namval_t *np), (np)) __OTORP__(register Namval_t *np;){
174 nv_onattr(np,NV_NOALIAS);
178 * out of memory routine for stak routines
180 static char *nospace __PARAM__((int unused), (unused)) __OTORP__(int unused;){
182 error(ERROR_exit(3),e_nospace);
186 #ifdef SHOPT_MULTIBYTE
188 /* Trap for CSWIDTH variable */
189 static void put_cswidth __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
191 register char *name = nv_name(np);
192 if(ed_setwidth(val?val:"") && !(flags&NV_IMPORT))
193 error(ERROR_exit(1),e_format,nv_name(np));
194 nv_putv(np, val, flags, fp);
196 #endif /* SHOPT_MULTIBYTE */
198 /* Trap for VISUAL and EDITOR variables */
199 static void put_ed __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
200 register const char *cp, *name=nv_name(np);
201 if(*name=='E' && nv_getval(nv_scoped(VISINOD)))
203 sh_offoption(SH_VI|SH_EMACS|SH_GMACS);
204 if(!(cp=val) && (*name=='E' || !(cp=nv_getval(nv_scoped(EDITNOD)))))
206 /* turn on vi or emacs option if editor name is either*/
207 cp = path_basename(cp);
208 if(strmatch(cp,"*vi"))
210 if(strmatch(cp,"*macs"))
213 sh_onoption(SH_GMACS);
215 sh_onoption(SH_EMACS);
218 nv_putv(np, val, flags, fp);
221 /* Trap for OPTINDEX */
222 static void put_optindex __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
223 sh.st.opterror = sh.st.optchar = 0;
224 nv_putv(np, val, flags, fp);
227 /* Trap for restricted variables PATH, SHELL, ENV */
228 static void put_restricted __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
229 if(!(flags&NV_RDONLY) && sh_isoption(SH_RESTRICTED))
230 error(ERROR_exit(1),e_restricted,nv_name(np));
231 if(nv_name(np)==nv_name(PATHNOD))
234 nv_scan(sh.track_tree,rehash,NV_TAGGED,NV_TAGGED);
236 nv_putv(np, val, flags, fp);
240 /* Trap for SYSTYPE variable */
241 static void put_systype __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
243 nv_scan(sh.track_tree,rehash,NV_TAGGED,NV_TAGGED);
244 nv_putv(np, val, flags, fp);
251 * The following struct is based on an alphanumerically sorted list of
252 * all ksh-generated messages which might be displayed, and
253 * must be looked up in a message catalog. The point of this is to
254 * translate from the AT&T/UI style of string-based message indexing
255 * to the X/OPEN style of message number lookup. The following struct
256 * allows us to do a binary search on the strings to find the associated
257 * set number and message ID. While we could have used the string index
258 * as the message number, that would cause headaches if/when we
259 * need to add more messages, as all following messages would have to
268 static MsgStr allmsgs[] = {
271 {" [-n] [arg...]", 25, 4},
272 {" [arg...]", 25, 5},
273 {" [dir] [list]", 25, 6},
274 {" [job...]", 25, 7},
276 {" [name [pathname] ]", 25, 9},
278 {" [top] [base]", 25, 11},
279 {" expr...", 25, 12},
280 {" format [arg...]", 25, 13},
281 {" is a function", 25, 14},
282 {" is a keyword", 25, 15},
283 {" is a shell builtin", 25, 16},
284 {" is an exported function", 25, 17},
285 {" is an undefined function", 25, 18},
286 {" name [arg...]", 25, 19},
287 {":a:[name] optstring name [args...]", 25, 20},
288 {" seconds", 25, 21},
289 {"${HOME:-.}/.profile", 25, 23},
290 {"%c: invalid character in expression - %s", 25, 24},
291 {"%c: unknown format specifier", 25, 25},
292 {"%d-%d: invalid range", 25, 26},
293 {"%d: invalid binary script version", 25, 27},
294 {"%s is an alias for ", 25, 28},
295 {"%s is an exported alias for ", 25, 29},
296 {"%s missing", 25, 30},
297 {"%s unknown base", 25, 31},
298 {"%s: ':' expected for '?' operator", 25, 32},
299 {"%s: Ambiguous", 25, 33},
300 {"%s: Arguments must be %job or process ids", 25, 34},
301 {"%s: alias not found\n", 25, 35},
302 {"%s: arithmetic syntax error", 25, 36},
303 {"%s: assignment requires lvalue", 25, 37},
304 {"%s: bad file unit number", 25, 38},
305 {"%s: bad format", 25, 39},
306 {"%s: bad number", 25, 40},
307 {"%s: bad option(s)", 25, 41},
308 {"%s: bad substitution", 25, 42},
309 {"%s: bad trap", 25, 43},
310 {"%s: cannot create", 25, 44},
311 {"%s: cannot execute", 25, 45},
312 {"%s: cannot open", 25, 46},
313 {"%s: divide by zero", 25, 47},
314 {"%s: domain exception", 25, 48},
315 {"%s: fails %s", 25, 49},
316 {"%s: file already exists", 25, 50},
317 {"%s: illegal function name", 25, 51},
318 {"%s: invalid alias name", 25, 52},
319 {"%s: invalid discipline function", 25, 53},
320 {"%s: invalid export name", 25, 54},
321 {"%s: invalid function name", 25, 55},
322 {"%s: invalid name", 25, 56},
323 {"%s: invalid regular expression", 25, 57},
324 {"%s: invalid self reference", 25, 58},
325 {"%s: invalid use of :", 25, 59},
326 {"%s: invalid variable name", 25, 60},
327 {"%s: is not an identifier", 25, 61},
328 {"%s: is read only", 25, 62},
329 {"%s: label not implemented", 25, 63},
330 {"%s: limit exceeded", 25, 64},
331 {"%s: more tokens expected", 25, 65},
332 {"%s: no parent", 25, 66},
333 {"%s: no reference name", 25, 67},
334 {"%s: not found", 25, 68},
335 {"%s: not implemented", 25, 69},
336 {"%s: operands have incompatible types", 25, 70},
337 {"%s: overflow exception", 25, 71},
338 {"%s: parameter not set", 25, 72},
339 {"%s: parameter null or not set", 25, 73},
340 {"%s: recursion too deep", 25, 74},
341 {"%s: reference variable cannot be an array", 25, 75},
342 {"%s: requires pathname argument", 25, 76},
343 {"%s: restricted", 25, 77},
344 {"%s: singularity exception", 25, 78},
345 {"%s: subscript out of range", 25, 79},
346 {"%s: unbalanced parenthesis", 25, 80},
347 {"%s: unknown function", 25, 81},
348 {"%s: unknown locale", 25, 82},
349 {"%s: unknown operator", 25, 83},
350 {"%s: unknown signal name", 25, 84},
351 {"%s: would cause loop", 25, 85},
352 {"(coredump)", 25, 86},
353 {"-c requires argument", 25, 87},
354 {"-e - requires single argument", 25, 88},
356 {"<command unknown>", 25, 90},
357 {"AC:E#?F#?H:[name]L#?R#?Z#?fi#?[base]lnprtux [name=[value]...]", 25, 91},
358 {"AE#?F#?HL#?R#?Z#?fi#?[base]lnprtux [name=[value]...]", 25, 92},
360 {"Ad:[delim]prst#[timeout]u#[filenum] [name...]", 25, 94},
361 {"Alarm call", 25, 95},
362 {"Bad root node specification", 25, 96},
363 {"Bad system call", 25, 97},
364 {"Broken Pipe", 25, 98},
365 {"Bus error", 25, 99},
366 {"Cannot start job control", 25, 100},
367 {"Current option settings", 25, 101},
368 {"DIL signal", 25, 102},
369 {"Death of Child", 25, 103},
370 {"DircabefhkmnpstuvxCR:[file]o:?[option] [arg...]", 25, 104},
371 {"DircabefhkmnpstuvxCo:?[option] [arg...]", 25, 105},
372 {"EMT trap", 25, 106},
373 {"Exceeded CPU time limit", 25, 107},
374 {"Exceeded file size limit", 25, 108},
375 {"Floating exception", 25, 109},
376 {"HSacdfmnstv [limit]", 25, 110},
378 {"IO signal", 25, 112},
379 {"Illegal instruction", 25, 113},
380 {"Interrupt", 25, 114},
382 {"LP [dir] [change]", 25, 116},
383 {"Memory fault", 25, 117},
384 {"Migrate process", 25, 118},
385 {"No job control", 25, 119},
386 {"Phone interrupt", 25, 120},
387 {"Polling alarm", 25, 121},
388 {"Power fail", 25, 122},
389 {"Profiling time alarm", 25, 123},
391 {"Resources lost", 25, 125},
392 {"Reverting to old tty driver...", 25, 126},
393 {"S [mask]", 25, 127},
394 {"SIGAPOLLO", 25, 128},
395 {"Security label changed", 25, 129},
396 {"Socket interrupt", 25, 130},
397 {"Sound completed", 25, 131},
398 {"Stopped (signal)", 25, 132},
399 {"Stopped (tty input)", 25, 133},
400 {"Stopped process continued", 25, 134},
401 {"Stopped", 25, 135},
402 {"Stopped(tty output)", 25, 136},
403 {"Switching to new tty driver...", 25, 137},
404 {"System crash soon", 25, 138},
405 {"Terminated", 25, 139},
406 {"Trace/BPT trap", 25, 140},
407 {"Unrecognized version", 25, 141},
408 {"Use 'exit' to terminate this shell", 25, 142},
409 {"User signal 1", 25, 143},
410 {"User signal 2", 25, 144},
411 {"Version not defined", 25, 145},
412 {"Virtual time alarm", 25, 146},
413 {"Window size change", 25, 147},
414 {"You have running jobs", 25, 148},
415 {"You have stopped jobs", 25, 149},
416 {"[_[:alpha:]]*([_[:alnum:]])", 25, 150},
417 {"\n@(#)Version 12/28/93\0\n", 25, 151},
418 {"\n@(#)Version M-12/28/93\0\n", 25, 152},
420 {"\r\n\007shell will timeout in 60 seconds due to inactivity", 25, 154},
421 {"a name...", 25, 155},
422 {"a:c [command [args...] ]", 25, 156},
423 {"afpv name...", 25, 157},
424 {"alarm %s %.3f\n", 25, 158},
425 {"alarm -r %s +%.3g\n", 25, 159},
426 {"argument expected", 25, 160},
427 {"bad directory", 25, 161},
428 {"bad file unit number", 25, 162},
429 {"bad substitution", 25, 163},
430 {"cannot access parent directories", 25, 164},
431 {"cannot create pipe", 25, 165},
432 {"cannot create tempory file", 25, 166},
433 {"cannot fork", 25, 167},
434 {"cannot get %s", 25, 168},
435 {"cannot set %s", 25, 169},
436 {"cannot set alarm", 25, 170},
437 {"condition(s) required", 25, 171},
438 {"dsf:[library] [name...]", 25, 172},
439 {"e:[editor]lnrsN# [first] [last]", 25, 173},
440 {"end of file", 25, 174},
441 {"f:[format]enprsu:[filenum] [arg...]", 25, 175},
442 {"fnv name...", 25, 176},
443 {"hist -e \"${VISUAL:-${EDITOR:-vi}}\" ", 25, 177},
444 {"history file cannot open", 25, 178},
445 {"incorrect syntax", 25, 179},
446 {"invalid argument of type %c", 25, 180},
447 {"is a shell builtin version of", 25, 181},
448 {"is a tracked alias for", 25, 182},
450 {"line %d: $ not preceded by \\", 25, 184},
451 {"line %d: %c within ${} should be quoted", 25, 185},
452 {"line %d: %s unknown label", 25, 186},
453 {"line %d: %s within [[...]] obsolete, use ((...))", 25, 187},
454 {"line %d: '=' obsolete, use '=='", 25, 188},
455 {"line %d: -a obsolete, use -e", 25, 189},
456 {"line %d: \\ in front of %c reserved for future use", 25, 190},
457 {"line %d: `...` obsolete, use $(...)", 25, 191},
458 {"line %d: escape %c to avoid ambiguities", 25, 192},
459 {"line %d: label %s ignored", 25, 193},
460 {"line %d: quote %c to avoid ambiguities", 25, 194},
461 {"line %d: set %s obsolete", 25, 195},
462 {"line %d: spaces required for nested subshell", 25, 196},
463 {"line %d: use braces to avoid ambiguities with $id[...]", 25, 197},
464 {"line %d: use space or tab to separate operators %c and %c", 25, 198},
465 {"ln#[signum]s:[signame] sig...", 25, 199},
466 {"login setuid/setgid shells prohibited", 25, 200},
467 {"mapping", 25, 201},
468 {"newline", 25, 202},
469 {"nlp [job...]", 25, 203},
470 {"no history file", 25, 204},
471 {"no query process", 25, 205},
472 {"no such job", 25, 206},
473 {"no such process", 25, 207},
474 {"not supported", 25, 208},
477 {"open file limit exceeded", 25, 211},
478 {"out of memory", 25, 212},
479 {"p [action condition...]", 25, 213},
480 {"p [name[=value]...]", 25, 214},
481 {"parameter not set", 25, 215},
482 {"permission denied", 25, 216},
483 {"process already exists", 25, 217},
484 {"ptx [name=[value]...]", 25, 218},
485 {"pvV name [arg]...", 25, 219},
486 {"r [varname seconds]", 25, 220},
487 {"syntax error at line %d: `%s' %s", 25, 221},
488 {"syntax error at line %d: duplicate label %s", 25, 222},
489 {"syntax error: `%s' %s", 25, 223},
491 {"timed out waiting for input", 25, 225},
492 {"unexpected", 25, 226},
493 {"universe not accessible", 25, 227},
494 {"unlimited", 25, 228},
495 {"unmatched", 25, 229},
497 {"versions", 25, 231},
498 {"write to %d failed", 25, 232},
499 {"you have mail in $_", 25, 233},
500 {"zero byte", 25, 234},
503 #define _CLIENT_CAT_NAME "dtksh.cat"
505 #define _CLIENT_CAT_NAME "dtksh"
506 #endif /* __ultrix */
509 * Without this proto, standard C says that _DtGetMessage() returns
510 * an int, even though it really returns a pointer. The compiler is
511 * then free to use the high 32-bits of the return register for
512 * something else (like scratch), and that can garble the pointer.
514 char *_DtGetMessage __PROTO__((char *filename, int set, int n, char *s));
515 #define GETMESSAGE(set, number, string)\
516 (_DtGetMessage(_CLIENT_CAT_NAME, set, number, string))
518 #include <nl_types.h>
520 static int localeChanged = 1;
522 void LocaleChanged __PARAM__((Namval_t *np, const char *val, int flags, Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t *np; const char *val; int flags; Namfun_t *fp;)
525 nv_putv(np, val, flags, fp);
526 setlocale(LC_ALL, "");
530 /****************************************************************************
532 * The following two functions are ugly, but necessary. Ksh reserves file
533 * descriptors 0 - 9 for use by shell scripts, and has intimate knowledge
534 * of how and when they were opened. Unfortunately, certain dtksh functions
535 * (XtInitialize, catopen, ttdt_open, _DtActionInvoke, others) open file
536 * descriptors which are not known to ksh. We can't let these file
537 * descriptors fall in the 0 - 9 range, because we can't afford to have
538 * the shell script overriding our file descriptors. Therefore, any of
539 * our commands which open files must first lock our file descriptors 0 - 9,
540 * thus forcing the command to get a file descriptor out of the shell's
541 * range. After the command has opened its file descriptor, it then needs
542 * to unlock file descriptors 0 - 9, so that the shell script will have
543 * access to them again.
545 **************************************************************************/
549 * Return a list of the file descriptors we had to open, to lock out file
550 * descriptors 0 - 9; this list should be freed (and the file descriptors
551 * closed) by calling UnlockkshFileDescriptors().
554 int *LockKshFileDescriptors __PARAM__((void),())
560 fdList = (int *)malloc(sizeof(int) * 10);
561 for (i = 0; i < 10; i++)
564 if ((fd = open("/dev/null", O_RDONLY)) >= 0)
569 for (i = 1; i < 10; i++)
571 if ((newfd = dup(fd)) < 10)
587 void UnlockKshFileDescriptors __PARAM__((int *fdList), (fdList)) __OTORP__(int *fdList;)
591 for (i = 0; i < 10; i++)
593 if (fdList[i] != (-1))
597 free((char *)fdList);
601 * This function overrides the traditional libDtSvc version of this function.
602 * Since ksh dynamically changes to match the user's locale, we potentially
603 * need to change our message catalog in the middle of running.
607 char *_DtGetMessage __PARAM__((char *filename, int set, int n, char *s), (filename, set, n, s)) __OTORP__(char *filename; int set; int n; char *s;)
613 static nl_catd nlmsg_fd = (nl_catd)-1;
614 static char *lang = NULL;
618 int swappedNlsPath = 0;
620 static char pathBuf[1024] = {(char)'N', (char)'L', (char)'S', (char)'P',
621 (char)'A', (char)'T', (char)'H', (char)'='};
628 newLang = (char *) getenv ("LANG");
632 lang = strdup(newLang);
636 if (nlmsg_fd != (nl_catd)-1)
638 if(strcmp((oldPath = getenv("NLSPATH")), savedNlsPath) != 0)
641 pEqual = strchr(pathBuf, '=');
642 strcpy(pEqual + 1, savedNlsPath);
644 * Only call putenv if pathBuf isn't already holding NLSPATH
645 * in the environment.
647 if(oldPath != (pEqual + 1))
650 lockedFds = LockKshFileDescriptors();
651 nlmsg_fd = catopen(filename, 0);
652 UnlockKshFileDescriptors(lockedFds);
653 if(swappedNlsPath != 0)
656 pEqual = strchr(pathBuf, '=');
657 strcpy(pEqual + 1, oldPath);
658 if(oldPath != (pEqual + 1))
662 msg=catgets(nlmsg_fd,set,n,s);
667 * This function needs to be modified to handle international
668 * error message translations
670 static char *msg_translate __PARAM__((const char *message,int type), (message, type)) __OTORP__(const char *message;int type;)
672 int startIndex = 0, endIndex = sizeof(allmsgs)/sizeof(MsgStr) - 1,
673 midIndex, res, weFoundIt = 0;
675 if(type != 1) /* if it's not a shell message, don't translate */
676 return((char*)message);
678 while(startIndex != endIndex)
680 midIndex = (startIndex + endIndex) / 2;
681 if(midIndex == startIndex)
683 if((res = strcmp(allmsgs[startIndex].string, message)) == 0)
686 midIndex = startIndex;
691 if((res = strcmp(allmsgs[endIndex].string, message)) == 0)
698 /* we didn't find a match in the table */
704 if((res = strcmp(allmsgs[midIndex].string, message)) == 0)
707 break; /* we found it */
710 startIndex = midIndex;
716 return GETMESSAGE(allmsgs[midIndex].setNum, allmsgs[midIndex].msgNum, (char *)message);
718 return((char*)message);
722 # ifdef SHOPT_MULTIBYTE
723 void charsize_init __PARAM__((void), ()){
724 static char fc[3] = { 0301, ESS2, ESS3};
728 memset(buff,0301,MB_CUR_MAX);
732 if((n=mbtowc(&wc,buff,MB_CUR_MAX))>0)
734 if((int_charsize[i+1] = n-(i>0))>0)
735 int_charsize[i+5] = wcwidth(wc);
737 int_charsize[i+5] = 0;
741 # endif /* SHOPT_MULTIBYTE */
743 /* Trap for LC_ALL, LC_TYPE, LC_MESSAGES, LC_COLLATE and LANG */
744 static void put_lang __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
746 char *lc_all = nv_getval(LCALLNOD);
747 if(nv_name(np)==nv_name(LCTYPENOD))
749 else if(nv_name(np)==nv_name(LCMSGNOD))
751 else if(nv_name(np)==nv_name(LCCOLLNOD))
753 else if(nv_name(np)==nv_name(LCNUMNOD))
755 else if(nv_name(np)==nv_name(LANGNOD) && !lc_all)
759 if(type>=0 && type!=LC_ALL && !lc_all)
763 if(!setlocale(type,val?val:""))
765 error(0,e_badlocale,val);
769 if(type==LC_ALL || type==LC_CTYPE)
771 if(sh_lexstates[ST_BEGIN]!=sh_lexrstates[ST_BEGIN])
772 free((__V_*)sh_lexstates[ST_BEGIN]);
773 if(ast.locale.set&LC_SET_CTYPE)
777 sh_lexstates[ST_BEGIN] = state[0] = (char*)malloc(4*(1<<CHAR_BIT));
778 memcpy(state[0],sh_lexrstates[ST_BEGIN],(1<<CHAR_BIT));
779 sh_lexstates[ST_NAME] = state[1] = state[0] + (1<<CHAR_BIT);
780 memcpy(state[1],sh_lexrstates[ST_NAME],(1<<CHAR_BIT));
781 sh_lexstates[ST_DOL] = state[2] = state[1] + (1<<CHAR_BIT);
782 memcpy(state[2],sh_lexrstates[ST_DOL],(1<<CHAR_BIT));
783 sh_lexstates[ST_BRACE] = state[3] = state[2] + (1<<CHAR_BIT);
784 memcpy(state[3],sh_lexrstates[ST_BRACE],(1<<CHAR_BIT));
785 for(c=0; c<(1<<CHAR_BIT); c++)
796 if(state[0][c]==S_REG)
798 if(state[1][c]==S_REG)
800 if(state[2][c]==S_ERR)
802 if(state[3][c]==S_ERR)
808 sh_lexstates[ST_BEGIN]=(char*)sh_lexrstates[ST_BEGIN];
809 sh_lexstates[ST_NAME]=(char*)sh_lexrstates[ST_NAME];
810 sh_lexstates[ST_DOL]=(char*)sh_lexrstates[ST_DOL];
811 sh_lexstates[ST_BRACE]=(char*)sh_lexrstates[ST_BRACE];
813 #ifdef SHOPT_MULTIBYTE
815 #endif /* SHOPT_MULTIBYTE */
817 if(type==LC_ALL || type==LC_MESSAGES)
818 error_info.translate = msg_translate;
819 nv_putv(np, val, flags, fp);
821 #endif /* _hdr_locale */
823 /* Trap for IFS assignment and invalidates state table */
824 static void put_ifs __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
826 nv_putv(np, val, flags, fp);
830 * This is the lookup function for IFS
831 * It keeps the sh.ifstable up to date
833 static char* get_ifs __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
834 register char *cp, *value;
836 value = nv_getv(np,fp);
840 memset(sh.ifstable,0,(1<<CHAR_BIT));
843 #ifdef SHOPT_MULTIBYTE
844 while(n=mbtowc(0,cp,MB_CUR_MAX),c= *(unsigned char*)cp)
846 while(c= *(unsigned char*)cp++)
847 #endif /* SHOPT_MULTIBYTE */
849 #ifdef SHOPT_MULTIBYTE
853 sh.ifstable[c] = S_MBYTE;
856 #endif /* SHOPT_MULTIBYTE */
867 sh.ifstable[' '] = sh.ifstable['\t'] = S_SPACE;
868 sh.ifstable['\n'] = S_NL;
875 * these functions are used to get and set the SECONDS variable
877 #ifdef _lib_gettimeofday
878 # define dtime(tp) ((double)((tp)->tv_sec)+1e-6*((double)((tp)->tv_usec)))
881 # define dtime(tp) (((double)times(tp))/sh.lim.clk_tck)
882 # define gettimeofday(a,b)
885 static void put_seconds __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
886 static double sec_offset;
892 nv_stack(np, NIL(Namfun_t*));
900 gettimeofday(&tp,NIL(void *));
901 sec_offset = dtime(&tp)-d;
905 np->nvalue.dp = &sec_offset;
909 static char* get_seconds __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
913 gettimeofday(&tp,NIL(void *));
914 d = dtime(&tp)- *np->nvalue.dp;
915 return(sh_ftos(d,nv_size(np)));
918 static double nget_seconds __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
921 gettimeofday(&tp,NIL(void *));
922 return(dtime(&tp)- *np->nvalue.dp);
926 * These three functions are used to get and set the RANDOM variable
928 static void put_rand __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
929 static long rand_last;
934 nv_stack(np, NIL(Namfun_t*));
942 srand((int)(n&RANDMASK));
945 np->nvalue.lp = &rand_last;
949 * get random number in range of 0 - 2**15
950 * never pick same number twice in a row
952 static double nget_rand __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
953 register long cur, last= *np->nvalue.lp;
956 cur = (rand()>>rand_shift)&RANDMASK;
958 *np->nvalue.lp = cur;
962 static char* get_rand __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
963 register long n = nget_rand(np,fp);
964 return(fmtbase(n, 10, 0));
968 * These three routines are for LINENO
970 static double nget_lineno __PARAM__((Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(Namval_t* np; Namfun_t *fp;){
972 if(error_info.line >0)
974 else if(error_info.context && error_info.context->line>0)
975 d = error_info.context->line;
981 static void put_lineno __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
986 nv_stack(np, NIL(Namfun_t*));
994 sh.st.firstline += nget_lineno(np,fp)+1-n;
997 static char* get_lineno __PARAM__((register Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(register Namval_t* np; Namfun_t *fp;){
998 register long n = nget_lineno(np,fp);
999 return(fmtbase(n, 10, 0));
1002 static char* get_lastarg __PARAM__((Namval_t* np, Namfun_t *fp), (np, fp)) __OTORP__(Namval_t* np; Namfun_t *fp;){
1008 static void put_lastarg __PARAM__((Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(Namval_t* np;const char *val;int flags;Namfun_t *fp;){
1010 if(flags&NV_INTEGER)
1011 val = sh_etos(*((double*)val),12);
1012 if(sh.lastarg && !nv_isattr(np,NV_NOFREE))
1013 free((__V_*)sh.lastarg);
1015 nv_offattr(np,NV_NOFREE);
1017 sh.lastarg = strdup(val);
1024 * set or unset the mappings given a colon separated list of directories
1026 static void vpath_set __PARAM__((char *str, int mode), (str, mode)) __OTORP__(char *str; int mode;){
1027 register char *lastp, *oldp=str, *newp=strchr(oldp,':');
1033 if(lastp=strchr(newp,':'))
1035 mount((mode?newp:""),oldp,FS3D_VIEW,0);
1042 /* catch vpath assignments */
1043 static void put_vpath __PARAM__((register Namval_t* np,const char *val,int flags,Namfun_t *fp), (np, val, flags, fp)) __OTORP__(register Namval_t* np;const char *val;int flags;Namfun_t *fp;){
1045 if(cp = nv_getval(np))
1048 vpath_set((char*)val,1);
1049 nv_putv(np,val,flags,fp);
1051 static const Namdisc_t VPATH_disc = { 0, put_vpath };
1052 static Namfun_t VPATH_init = { &VPATH_disc };
1053 #endif /* SHOPT_FS_3D */
1055 static const Namdisc_t IFS_disc = { 0, put_ifs, get_ifs };
1056 static const Namdisc_t RESTRICTED_disc = { 0, put_restricted };
1057 static const Namdisc_t EDITOR_disc = { 0, put_ed };
1058 static const Namdisc_t OPTINDEX_disc = { 0, put_optindex };
1059 static const Namdisc_t SECONDS_disc = { 0, put_seconds, get_seconds, nget_seconds };
1060 static const Namdisc_t RAND_disc = { 0, put_rand, get_rand, nget_rand };
1061 static const Namdisc_t LINENO_disc = { 0, put_lineno, get_lineno, nget_lineno };
1062 static const Namdisc_t L_ARG_disc = { 0, put_lastarg, get_lastarg };
1063 static Namfun_t IFS_init = { &IFS_disc};
1064 static Namfun_t PATH_init = { &RESTRICTED_disc};
1065 static Namfun_t SHELL_init = { &RESTRICTED_disc};
1066 static Namfun_t ENV_init = { &RESTRICTED_disc};
1067 static Namfun_t VISUAL_init = { &EDITOR_disc};
1068 static Namfun_t EDITOR_init = { &EDITOR_disc};
1069 static Namfun_t OPTINDEX_init = { &OPTINDEX_disc};
1070 static Namfun_t SECONDS_init = { &SECONDS_disc};
1071 static Namfun_t RAND_init = { &RAND_disc};
1072 static Namfun_t LINENO_init = { &LINENO_disc};
1073 static Namfun_t L_ARG_init = { &L_ARG_disc};
1075 static const Namdisc_t LC_disc = { 0, put_lang };
1076 static Namfun_t LC_TYPE_init = { &LC_disc};
1077 static Namfun_t LC_NUM_init = { &LC_disc};
1078 static Namfun_t LC_COLL_init = { &LC_disc};
1079 static Namfun_t LC_MSG_init = { &LC_disc};
1080 static Namfun_t LC_ALL_init = { &LC_disc};
1081 static Namfun_t LANG_init = { &LC_disc};
1082 #endif /* _hdr_locale */
1084 static const Namdisc_t SYSTYPE_disc = { 0, put_systype };
1085 static Namfun_t SYSTYPE_init = { &SYSTYPEdisc};
1087 #ifdef SHOPT_MULTIBYTE
1088 static const Namdisc_t CSWIDTH_disc = { 0, put_cswidth };
1089 static Namfun_t CSWIDTH_init = { &CSWIDTH_disc};
1090 #endif /* SHOPT_MULTIBYTE */
1093 * This function will get called whenever a configuration parameter changes
1095 static int newconf __PARAM__((const char *name, const char *path, const char *value), (name, path, value)) __OTORP__(const char *name; const char *path; const char *value;){
1097 if(strcmp(name,"UNIVERSE")==0 && strcmp(astconf(name,0,0),value))
1100 /* set directory in new universe */
1101 if(*(arg = path_pwd(0))=='/')
1103 /* clear out old tracked alias */
1105 stakputs(nv_getval(PATHNOD));
1107 nv_putval(PATHNOD,stakseek(0),NV_RDONLY);
1113 * initialize the shell
1115 int sh_init __PARAM__((register int argc,register char *argv[]), (argc, argv)) __OTORP__(register int argc;register char *argv[];){
1116 register char *name;
1117 register int n,prof;
1121 memcpy(sh_lexstates,sh_lexrstates,ST_NONE*sizeof(char*));
1122 sh_onstate(SH_INIT);
1123 error_info.exit = sh_exit;
1124 error_info.id = path_basename(argv[0]);
1128 sh.euserid=geteuid();
1129 sh.groupid=getgid();
1130 sh.egroupid=getegid();
1131 for(n=0;n < 10; n++)
1133 /* don't use lower bits when rand() generates large numbers */
1134 if(rand() > RANDMASK)
1140 sh.lim.clk_tck = sysconf(_SC_CLK_TCK);
1141 sh.lim.open_max = sysconf(_SC_OPEN_MAX);
1142 sh.lim.child_max = sysconf(_SC_CHILD_MAX);
1143 sh.lim.ngroups_max = sysconf(_SC_NGROUPS_MAX);
1144 sh.lim.posix_version = sysconf(_SC_VERSION);
1145 sh.lim.posix_jobcontrol = sysconf(_SC_JOB_CONTROL);
1146 if(sh.lim.child_max <=0)
1147 sh.lim.child_max = CHILD_MAX;
1148 if(sh.lim.open_max <0)
1149 sh.lim.open_max = OPEN_MAX;
1150 if(sh.lim.clk_tck <=0)
1151 sh.lim.clk_tck = CLK_TCK;
1153 if(mount(".", NIL(char*),FS3D_GET|FS3D_VERSION,0) >= 0)
1155 #endif /* SHOPT_FS_3D */
1157 /* initialize signal handling */
1159 stakinstall(NIL(Stak_t*),nospace);
1160 /* set up memory for name-value pairs */
1162 /* read the environment */
1163 #ifdef SHOPT_MULTIBYTE
1165 #endif /* SHOPT_MULTIBYTE */
1167 nv_putval(IFSNOD,(char*)e_sptbnl,NV_RDONLY);
1169 nv_stack(VPATHNOD, &VPATH_init);
1170 #endif /* SHOPT_FS_3D */
1171 astconfdisc(newconf);
1172 #ifdef SHOPT_TIMEOUT
1173 sh.tmout = SHOPT_TIMEOUT;
1174 #endif /* SHOPT_TIMEOUT */
1175 /* initialize jobs table */
1179 name = path_basename(*argv);
1185 /* check for restricted shell */
1186 if(argc>0 && strmatch(name,rsh_pattern))
1187 sh_onoption(SH_RESTRICTED);
1188 /* look for options */
1189 /* sh.st.dolc is $# */
1190 if((sh.st.dolc = sh_argopts(-argc,argv)) < 0)
1195 sh.st.dolv=argv+(argc-1)-sh.st.dolc;
1196 sh.st.dolv[0] = argv[0];
1198 sh_onoption(SH_SFLAG);
1199 if(!sh_isoption(SH_SFLAG))
1205 /* set[ug]id scripts require the -p flag */
1206 prof = !sh_isoption(SH_PRIVILEGED);
1207 if(sh.userid!=sh.euserid || sh.groupid!=sh.egroupid)
1210 /* require sh -p to run setuid and/or setgid */
1211 if(!sh_isoption(SH_PRIVILEGED) && sh.euserid < SHOPT_P_SUID)
1213 setuid(sh.euserid=sh.userid);
1214 seTgid(sh.egroupid=sh.groupid);
1219 sh_onoption(SH_PRIVILEGED);
1222 #endif /* SHOPT_P_SUID */
1224 /* careful of #! setuid scripts with name beginning with - */
1225 if(sh.login_sh && strcmp(argv[0],argv[1])==0)
1226 error(ERROR_exit(1),e_prohibited);
1227 #endif /*SHELLMAGIC*/
1230 sh_offoption(SH_PRIVILEGED);
1231 sh.shname = strdup(sh.st.dolv[0]); /* shname for $0 in profiles */
1233 * return here for shell script execution
1234 * but not for parenthesis subshells
1236 error_info.id = strdup(sh.st.dolv[0]); /* error_info.id is $0 */
1237 sh_offstate(SH_INIT);
1242 * reinitialize before executing a script
1244 void sh_reinit __PARAM__((char *argv[]), (argv)) __OTORP__(char *argv[];){
1246 nv_scan(sh.var_tree,sh_envnolocal,NV_EXPORT,0);
1247 hashfree(sh.fun_tree);
1248 sh.fun_tree = hashalloc(sh.bltin_tree,HASH_set,HASH_SCOPE|HASH_ALLOCATE,0);
1249 hashfree(sh.alias_tree);
1250 sh.alias_tree = inittree(shtab_aliases);
1251 /* set up new args */
1252 sh.arglist = sh_argcreate(argv);
1256 * set when creating a local variable of this name
1258 Namfun_t *nv_cover __PARAM__((register Namval_t *np), (np)) __OTORP__(register Namval_t *np;){
1259 register Namfun_t *nfp=0;
1262 else if(np==PATHNOD)
1264 else if(np==SHELLNOD)
1270 * Initialize the shell name and alias table
1272 static void nv_init __PARAM__((void), ()){
1274 sh.var_base = sh.var_tree = inittree(shtab_variables);
1275 nv_stack(IFSNOD, &IFS_init);
1276 nv_stack(PATHNOD, &PATH_init);
1277 nv_stack(SHELLNOD, &SHELL_init);
1278 nv_stack(ENVNOD, &ENV_init);
1279 nv_stack(VISINOD, &VISUAL_init);
1280 nv_stack(EDITNOD, &EDITOR_init);
1281 nv_stack(OPTINDNOD, &OPTINDEX_init);
1282 nv_stack(SECONDS, &SECONDS_init);
1283 nv_stack(L_ARGNOD, &L_ARG_init);
1284 nv_putval(SECONDS, (char*)&d, NV_INTEGER);
1285 nv_stack(RANDNOD, &RAND_init);
1286 d = (sh.pid&RANDMASK);
1287 nv_putval(RANDNOD, (char*)&d, NV_INTEGER);
1288 nv_stack(LINENO, &LINENO_init);
1290 nv_stack(LCTYPENOD, &LC_TYPE_init);
1291 nv_stack(LCALLNOD, &LC_ALL_init);
1292 nv_stack(LCMSGNOD, &LC_MSG_init);
1293 nv_stack(LCCOLLNOD, &LC_COLL_init);
1294 nv_stack(LCNUMNOD, &LC_NUM_init);
1295 nv_stack(LANGNOD, &LANG_init);
1296 #endif /* _hdr_locale */
1298 nv_stack(SYSTYPENOD, &SYSTYPE_init);
1300 #ifdef SHOPT_MULTIBYTE
1301 nv_stack(CSWIDTHNOD, &CSWIDTH_init);
1302 #endif /* SHOPT_MULTIBYTE */
1303 (PPIDNOD)->nvalue.lp = (&sh.ppid);
1304 (TMOUTNOD)->nvalue.lp = (&sh.tmout);
1305 (MCHKNOD)->nvalue.lp = (long*)(&sh_mailchk);
1306 (OPTINDNOD)->nvalue.lp = (&sh.st.optindex);
1307 /* set up the seconds clock */
1308 sh.alias_tree = inittree(shtab_aliases);
1309 sh.track_tree = hashalloc(sh.var_tree,HASH_set,HASH_ALLOCATE,0);
1310 sh.bltin_tree = inittree((const struct shtable2*)shtab_builtins);
1311 sh.fun_tree = hashalloc(sh.bltin_tree,HASH_set,HASH_SCOPE|HASH_ALLOCATE,0);
1315 * initialize name-value pairs
1318 static Hashtab_t *inittree __PARAM__((const struct shtable2 *name_vals), (name_vals)) __OTORP__(const struct shtable2 *name_vals;){
1319 register Namval_t *np;
1320 register const struct shtable2 *tp;
1321 register unsigned n = 0;
1322 register Hashtab_t *treep;
1323 for(tp=name_vals;*tp->sh_name;tp++)
1325 np = (Namval_t*)calloc(n,sizeof(Namval_t));
1327 sh.bltin_nodes = np;
1328 else if(name_vals==(const struct shtable2*)shtab_builtins)
1331 treep = hashalloc(sh.var_tree,HASH_set,HASH_BUCKET,HASH_name,"vars",sh.var_tree?0:HASH_free,nv_unset,0);
1332 treep->root->flags |= HASH_BUCKET;
1334 treep = hashalloc(sh.var_tree,HASH_name,"vars",sh.var_tree?0:HASH_unset,nv_unset,0);
1336 for(tp=name_vals;*tp->sh_name;tp++,np++)
1338 np->name = (char*)tp->sh_name;
1340 if(name_vals==(const struct shtable2*)shtab_builtins)
1342 np->nvalue.bfp = ((struct shtable3*)tp)->sh_value;
1345 np->nvenv = np->name;
1346 np->name = path_basename(np->name);
1350 np->nvalue.cp = (char*)tp->sh_value;
1351 nv_setattr(np,tp->sh_number);
1352 if(nv_isattr(np,NV_INTEGER))
1358 hashset(treep,HASH_ALLOCATE);
1363 * read in the process environment and set up name-value pairs
1364 * skip over items that are not name-value pairs
1367 static void env_init __PARAM__((void), ()){
1369 register Namval_t *np;
1370 register char **ep=environ;
1371 register char *next=0;
1376 if(*cp=='A' && cp[1]=='_' && cp[2]=='_' && cp[3]=='z' && cp[4]=='=')
1378 else if(np=nv_open(cp,sh.var_tree,(NV_EXPORT|NV_IDENT|NV_ASSIGN)))
1380 nv_onattr(np,NV_IMPORT);
1387 if(next = strchr(++cp,'='))
1389 np = nv_search(cp+2,sh.var_tree,NV_ADD);
1390 if(nv_isattr(np,NV_IMPORT|NV_EXPORT))
1391 nv_newattr(np,(unsigned)(cp[0]-' ')|NV_IMPORT|NV_EXPORT,cp[1]-' ');
1394 if(nv_isattr(PWDNOD,NV_TAGGED))
1396 nv_offattr(PWDNOD,NV_TAGGED);
1399 if(cp = nv_getval(SHELLNOD))
1401 cp = path_basename(cp);
1402 if(strmatch(cp,rsh_pattern))
1403 sh_onoption(SH_RESTRICTED); /* restricted shell */
1409 * terminate shell and free up the space
1411 int sh_term __PARAM__((void), ()){
1412 sfdisc(sfstdin,SF_POPDISC);
1413 free((char*)sh.outbuff);
1414 stakset(NIL(char*),0);