X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perly.c;h=b71f95a952c77e38d5ec36cf848ba6c442df098d;hb=c0e1089ae3d29de8c9817373e1b7f36eaf9a9cd8;hp=b5c14655927b817c8c4f5e13e1eaaeb03415957a;hpb=33b78306b8a6f9a33cf09697c8c3167d2111ea12;p=p5sagit%2Fp5-mst-13.2.git diff --git a/perly.c b/perly.c index b5c1465..b71f95a 100644 --- a/perly.c +++ b/perly.c @@ -1,1037 +1,710 @@ -char rcsid[] = "$Header: perly.c,v 3.0.1.6 90/08/09 04:55:50 lwall Locked $\nPatch level: ###\n"; -/* - * Copyright (c) 1989, Larry Wall +/* perly.c * - * You may distribute under the terms of the GNU General Public License - * as specified in the README file that comes with the perl 3.0 kit. + * Copyright (c) 2004 Larry Wall * - * $Log: perly.c,v $ - * Revision 3.0.1.6 90/08/09 04:55:50 lwall - * patch19: added -x switch to extract script from input trash - * patch19: Added -c switch to do compilation only - * patch19: added numeric interpretation of $] - * patch19: added require operator - * patch19: $0, %ENV, @ARGV were wrong in dumped script - * patch19: . is now explicitly in @INC (and last) - * - * Revision 3.0.1.5 90/03/27 16:20:57 lwall - * patch16: MSDOS support - * patch16: do FILE inside eval blows up - * - * Revision 3.0.1.4 90/02/28 18:06:41 lwall - * patch9: perl can now start up other interpreters scripts - * patch9: nested evals clobbered their longjmp environment - * patch9: eval could mistakenly return undef in array context - * - * Revision 3.0.1.3 89/12/21 20:15:41 lwall - * patch7: ANSI strerror() is now supported - * patch7: errno may now be a macro with an lvalue - * patch7: allowed setuid scripts to have a space after #! - * - * Revision 3.0.1.2 89/11/17 15:34:42 lwall - * patch5: fixed possible confusion about current effective gid - * - * Revision 3.0.1.1 89/11/11 04:50:04 lwall - * patch2: moved yydebug to where its type didn't matter - * - * Revision 3.0 89/10/18 15:22:21 lwall - * 3.0 baseline + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. * + * Note that this file was originally generated as an output from + * GNU bison version 1.875, but now the code is statically maintained + * and edited; the bits that are dependent on perly.y are now #included + * from the files perly.tab and perly.act. + * + * Here is an important copyright statement from the original, generated + * file: + * + * As a special exception, when this file is copied by Bison into a + * Bison output file, you may use that output file without + * restriction. This special exception was added by the Free + * Software Foundation in version 1.24 of Bison. */ + +/* allow stack size to grow effectively without limit */ +#define YYMAXDEPTH 10000000 + #include "EXTERN.h" +#define PERL_IN_PERLY_C #include "perl.h" -#include "perly.h" -#include "patchlevel.h" -#ifdef IAMSUID -#ifndef DOSUID -#define DOSUID -#endif -#endif +typedef signed char yysigned_char; -#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW -#ifdef DOSUID -#undef DOSUID -#endif +#ifdef DEBUGGING +# define YYDEBUG 1 +#else +# define YYDEBUG 0 #endif -static char* moreswitches(); -static char* cddir; -extern char **environ; -static bool minus_c; +/* contains all the parser state tables; auto-generated from perly.y */ +#include "perly.tab" -main(argc,argv,env) -register int argc; -register char **argv; -register char **env; -{ - register STR *str; - register char *s; - char *index(), *strcpy(), *getenv(); - bool dosearch = FALSE; -#ifdef DOSUID - char *validarg = ""; -#endif +# define YYSIZE_T size_t -#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW -#ifdef IAMSUID -#undef IAMSUID - fatal("suidperl is no longer needed since the kernel can now execute\n\ -setuid perl scripts securely.\n"); -#endif -#endif +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) +#define YYEOF 0 - origargv = argv; - origargc = argc; - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); -#ifdef MSDOS - /* - * There is no way we can refer to them from Perl so close them to save - * space. The other alternative would be to provide STDAUX and STDPRN - * filehandles. - */ - (void)fclose(stdaux); - (void)fclose(stdprn); -#endif - if (do_undump) { - origfilename = savestr(argv[0]); - do_undump = 0; - loop_ptr = -1; /* start label stack again */ - goto just_doit; - } - (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); - linestr = Str_new(65,80); - str_nset(linestr,"",0); - str = str_make("",0); /* first used for -I flags */ - curstash = defstash = hnew(0); - curstname = str_make("main",4); - stab_xhash(stabent("_main",TRUE)) = defstash; - incstab = hadd(aadd(stabent("INC",TRUE))); - incstab->str_pok |= SP_MULTI; - for (argc--,argv++; argc > 0; argc--,argv++) { - if (argv[0][0] != '-' || !argv[0][1]) - break; -#ifdef DOSUID - if (*validarg) - validarg = " PHOOEY "; - else - validarg = argv[0]; -#endif - s = argv[0]+1; - reswitch: - switch (*s) { - case 'a': - case 'c': - case 'd': - case 'D': - case 'i': - case 'n': - case 'p': - case 'u': - case 'U': - case 'v': - case 'w': - if (s = moreswitches(s)) - goto reswitch; - break; - - case 'e': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -e allowed in setuid scripts"); -#endif - if (!e_fp) { - e_tmpname = savestr(TMPPATH); - (void)mktemp(e_tmpname); - e_fp = fopen(e_tmpname,"w"); - if (!e_fp) - fatal("Cannot open temporary file"); - } - if (argv[1]) { - fputs(argv[1],e_fp); - argc--,argv++; - } - (void)putc('\n', e_fp); - break; - case 'I': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif - str_cat(str,"-"); - str_cat(str,s); - str_cat(str," "); - if (*++s) { - (void)apush(stab_array(incstab),str_make(s,0)); - } - else if (argv[1]) { - (void)apush(stab_array(incstab),str_make(argv[1],0)); - str_cat(str,argv[1]); - argc--,argv++; - str_cat(str," "); - } - break; - case 'P': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -P allowed in setuid scripts"); -#endif - preprocess = TRUE; - s++; - goto reswitch; - case 's': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -s allowed in setuid scripts"); -#endif - doswitches = TRUE; - s++; - goto reswitch; - case 'S': - dosearch = TRUE; - s++; - goto reswitch; - case 'x': - doextract = TRUE; - s++; - if (*s) - cddir = savestr(s); - break; - case '-': - argc--,argv++; - goto switch_end; - case 0: - break; - default: - fatal("Unrecognized switch: -%s",s); - } - } - switch_end: - if (e_fp) { - (void)fclose(e_fp); - argc++,argv--; - argv[0] = e_tmpname; - } -#ifndef PRIVLIB -#define PRIVLIB "/usr/local/lib/perl" -#endif - (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); - (void)apush(stab_array(incstab),str_make(".",1)); +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrlab1 - str_set(&str_no,No); - str_set(&str_yes,Yes); - /* open script */ +/* Like YYERROR except do call yyerror. This remains here temporarily + to ease the transition to the new meaning of YYERROR, for GCC. + Once GCC version 2 has supplanted version 1, this can go. */ - if (argv[0] == Nullch) - argv[0] = "-"; - if (dosearch && !index(argv[0], '/') && (s = getenv("PATH"))) { - char *xfound = Nullch, *xfailed = Nullch; - int len; +#define YYFAIL goto yyerrlab - bufend = s + strlen(s); - while (*s) { -#ifndef MSDOS - s = cpytill(tokenbuf,s,bufend,':',&len); -#else - for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); - tokenbuf[len] = '\0'; -#endif - if (*s) - s++; -#ifndef MSDOS - if (len && tokenbuf[len-1] != '/') -#else - if (len && tokenbuf[len-1] != '\\') -#endif - (void)strcat(tokenbuf+len,"/"); - (void)strcat(tokenbuf+len,argv[0]); +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ +do \ + if (yychar == YYEMPTY && yylen == 1) { \ + yychar = (Token); \ + yylval = (Value); \ + yytoken = YYTRANSLATE (yychar); \ + YYPOPSTACK; \ + goto yybackup; \ + } \ + else { \ + yyerror ("syntax error: cannot back up"); \ + YYERROR; \ + } \ +while (0) + +#define YYTERROR 1 +#define YYERRCODE 256 + +/* Enable debugging if requested. */ #ifdef DEBUGGING - if (debug & 1) - fprintf(stderr,"Looking for %s\n",tokenbuf); -#endif - if (stat(tokenbuf,&statbuf) < 0) /* not there? */ - continue; - if ((statbuf.st_mode & S_IFMT) == S_IFREG - && cando(S_IREAD,TRUE,&statbuf) && cando(S_IEXEC,TRUE,&statbuf)) { - xfound = tokenbuf; /* bingo! */ - break; - } - if (!xfailed) - xfailed = savestr(tokenbuf); - } - if (!xfound) - fatal("Can't execute %s", xfailed ? xfailed : argv[0] ); - if (xfailed) - Safefree(xfailed); - argv[0] = savestr(xfound); - } - pidstatary = anew(Nullstab); /* for remembering popen pids, status */ - - origfilename = savestr(argv[0]); - filename = origfilename; - if (strEQ(filename,"-")) - argv[0] = ""; - if (preprocess) { - str_cat(str,"-I"); - str_cat(str,PRIVLIB); - (void)sprintf(buf, "\ -/bin/sed %s -e '/^[^#]/b' \ - -e '/^#[ ]*include[ ]/b' \ - -e '/^#[ ]*define[ ]/b' \ - -e '/^#[ ]*if[ ]/b' \ - -e '/^#[ ]*ifdef[ ]/b' \ - -e '/^#[ ]*ifndef[ ]/b' \ - -e '/^#[ ]*else/b' \ - -e '/^#[ ]*endif/b' \ - -e 's/^#.*//' \ - %s | %s -C %s %s", - (doextract ? "-e '1,/^#/d\n'" : ""), - argv[0], CPPSTDIN, str_get(str), CPPMINUS); - doextract = FALSE; -#ifdef IAMSUID /* actually, this is caught earlier */ - if (euid != uid && !euid) /* if running suidperl */ -#ifdef SETEUID - (void)seteuid(uid); /* musn't stay setuid root */ -#else -#ifdef SETREUID - (void)setreuid(-1, uid); -#else - setuid(uid); -#endif -#endif -#endif /* IAMSUID */ - rsfp = mypopen(buf,"r"); +# define yydebug (DEBUG_p_TEST) + +# define YYFPRINTF PerlIO_printf + +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + YYFPRINTF Args; \ +} while (0) + +# define YYDSYMPRINT(Args) \ +do { \ + if (yydebug) \ + yysymprint Args; \ +} while (0) + +# define YYDSYMPRINTF(Title, Token, Value) \ +do { \ + if (yydebug) { \ + YYFPRINTF (Perl_debug_log, "%s ", Title); \ + yysymprint (aTHX_ Perl_debug_log, Token, Value); \ + YYFPRINTF (Perl_debug_log, "\n"); \ + } \ +} while (0) + +/*--------------------------------. +| Print this symbol on YYOUTPUT. | +`--------------------------------*/ + +static void +yysymprint (pTHX_ PerlIO *yyoutput, int yytype, const YYSTYPE *yyvaluep) +{ + if (yytype < YYNTOKENS) { + YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); +# ifdef YYPRINT + YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); +# else + YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival); +# endif } - else if (!*argv[0]) - rsfp = stdin; else - rsfp = fopen(argv[0],"r"); - if (rsfp == Nullfp) { -#ifdef DOSUID -#ifndef IAMSUID /* in case script is not readable before setuid */ - if (euid && stat(filename,&statbuf) >= 0 && - statbuf.st_mode & (S_ISUID|S_ISGID)) { - (void)sprintf(buf, "%s/%s", BIN, "suidperl"); - execv(buf, origargv); /* try again */ - fatal("Can't do setuid\n"); - } -#endif -#endif - fatal("Can't open perl script \"%s\": %s\n", - filename, strerror(errno)); - } - str_free(str); /* free -I directories */ - - /* do we need to emulate setuid on scripts? */ - - /* This code is for those BSD systems that have setuid #! scripts disabled - * in the kernel because of a security problem. Merely defining DOSUID - * in perl will not fix that problem, but if you have disabled setuid - * scripts in the kernel, this will attempt to emulate setuid and setgid - * on scripts that have those now-otherwise-useless bits set. The setuid - * root version must be called suidperl. If regular perl discovers that - * it has opened a setuid script, it calls suidperl with the same argv - * that it had. If suidperl finds that the script it has just opened - * is NOT setuid root, it sets the effective uid back to the uid. We - * don't just make perl setuid root because that loses the effective - * uid we had before invoking perl, if it was different from the uid. - * - * DOSUID must be defined in both perl and suidperl, and IAMSUID must - * be defined in suidperl only. suidperl must be setuid root. The - * Configure script will set this up for you if you want it. - * - * There is also the possibility of have a script which is running - * set-id due to a C wrapper. We want to do the TAINT checks - * on these set-id scripts, but don't want to have the overhead of - * them in normal perl, and can't use suidperl because it will lose - * the effective uid info, so we have an additional non-setuid root - * version called taintperl that just does the TAINT checks. - */ - -#ifdef DOSUID - if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ - fatal("Can't stat script \"%s\"",filename); - if (statbuf.st_mode & (S_ISUID|S_ISGID)) { - int len; - -#ifdef IAMSUID -#ifndef SETREUID - /* On this access check to make sure the directories are readable, - * there is actually a small window that the user could use to make - * filename point to an accessible directory. So there is a faint - * chance that someone could execute a setuid script down in a - * non-accessible directory. I don't know what to do about that. - * But I don't think it's too important. The manual lies when - * it says access() is useful in setuid programs. - */ - if (access(filename,1)) /* as a double check */ - fatal("Permission denied"); -#else - /* If we can swap euid and uid, then we can determine access rights - * with a simple stat of the file, and then compare device and - * inode to make sure we did stat() on the same file we opened. - * Then we just have to make sure he or she can execute it. - */ - { - struct stat tmpstatbuf; - - if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) - fatal("Can't swap uid and euid"); /* really paranoid */ - if (stat(filename,&tmpstatbuf) < 0) /* testing full pathname here */ - fatal("Permission denied"); - if (tmpstatbuf.st_dev != statbuf.st_dev || - tmpstatbuf.st_ino != statbuf.st_ino) { - (void)fclose(rsfp); - if (rsfp = mypopen("/bin/mail root","w")) { /* heh, heh */ - fprintf(rsfp, -"User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ -(Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", - uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, - statbuf.st_dev, statbuf.st_ino, - filename, statbuf.st_uid, statbuf.st_gid); - (void)mypclose(rsfp); - } - fatal("Permission denied\n"); - } - if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) - fatal("Can't reswap uid and euid"); - if (!cando(S_IEXEC,FALSE,&statbuf)) /* can real uid exec? */ - fatal("Permission denied\n"); - } -#endif /* SETREUID */ -#endif /* IAMSUID */ - - if ((statbuf.st_mode & S_IFMT) != S_IFREG) - fatal("Permission denied"); - if ((statbuf.st_mode >> 6) & S_IWRITE) - fatal("Setuid/gid script is writable by world"); - doswitches = FALSE; /* -s is insecure in suid */ - curcmd->c_line++; - if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || - strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ - fatal("No #! line"); - s = tokenbuf+2; - if (*s == ' ') s++; - while (!isspace(*s)) s++; - if (strnNE(s-4,"perl",4)) /* sanity check */ - fatal("Not a perl script"); - while (*s == ' ' || *s == '\t') s++; - /* - * #! arg must be what we saw above. They can invoke it by - * mentioning suidperl explicitly, but they may not add any strange - * arguments beyond what #! says if they do invoke suidperl that way. - */ - len = strlen(validarg); - if (strEQ(validarg," PHOOEY ") || - strnNE(s,validarg,len) || !isspace(s[len])) - fatal("Args must match #! line"); - -#ifndef IAMSUID - if (euid != uid && (statbuf.st_mode & S_ISUID) && - euid == statbuf.st_uid) - if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ -FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); -#endif /* IAMSUID */ - - if (euid) { /* oops, we're not the setuid root perl */ - (void)fclose(rsfp); -#ifndef IAMSUID - (void)sprintf(buf, "%s/%s", BIN, "suidperl"); - execv(buf, origargv); /* try again */ -#endif - fatal("Can't do setuid\n"); - } + YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); - if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) -#ifdef SETEGID - (void)setegid(statbuf.st_gid); -#else -#ifdef SETREGID - (void)setregid((GIDTYPE)-1,statbuf.st_gid); -#else - setgid(statbuf.st_gid); -#endif -#endif - if (statbuf.st_mode & S_ISUID) { - if (statbuf.st_uid != euid) -#ifdef SETEUID - (void)seteuid(statbuf.st_uid); /* all that for this */ -#else -#ifdef SETREUID - (void)setreuid((UIDTYPE)-1,statbuf.st_uid); -#else - setuid(statbuf.st_uid); -#endif + YYFPRINTF (yyoutput, ")"); +} + + +/* yy_stack_print() + * print the top 8 items on the parse stack. The args have the same + * meanings as the local vars in yyparse() of the same name */ + +static void +yy_stack_print (pTHX_ const short *yyss, const short *yyssp, const YYSTYPE *yyvs, const char**yyns) +{ + int i; + int start = 1; + int count = (int)(yyssp - yyss); + + if (count > 8) { + start = count - 8 + 1; + count = 8; + } + + PerlIO_printf(Perl_debug_log, "\nindex:"); + for (i=0; i < count; i++) + PerlIO_printf(Perl_debug_log, " %8d", start+i); + PerlIO_printf(Perl_debug_log, "\nstate:"); + for (i=0, yyss += start; i < count; i++, yyss++) + PerlIO_printf(Perl_debug_log, " %8d", *yyss); + PerlIO_printf(Perl_debug_log, "\ntoken:"); + for (i=0, yyns += start; i < count; i++, yyns++) + PerlIO_printf(Perl_debug_log, " %8.8s", *yyns); + PerlIO_printf(Perl_debug_log, "\nvalue:"); + for (i=0, yyvs += start; i < count; i++, yyvs++) + PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)yyvs->ival); + PerlIO_printf(Perl_debug_log, "\n\n"); +} + +# define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ +do { \ + if (yydebug && DEBUG_v_TEST) \ + yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ +} while (0) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +static void +yy_reduce_print (pTHX_ int yyrule) +{ + int yyi; + const unsigned int yylineno = yyrline[yyrule]; + YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ", + yyrule - 1, yylineno); + /* Print the symbols being reduced, and their result. */ + for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) + YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]); + YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]); +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (aTHX_ Rule); \ +} while (0) + +#else /* !DEBUGGING */ +# define YYDPRINTF(Args) +# define YYDSYMPRINT(Args) +# define YYDSYMPRINTF(Title, Token, Value) +# define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) +# define YY_REDUCE_PRINT(Rule) +#endif /* !DEBUGGING */ + + +/* YYINITDEPTH -- initial size of the parser's stacks. */ +#ifndef YYINITDEPTH +# define YYINITDEPTH 200 #endif - } - else if (uid) /* oops, mustn't run as root */ -#ifdef SETEUID - (void)seteuid((UIDTYPE)uid); -#else -#ifdef SETREUID - (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); + + +#if YYERROR_VERBOSE +# ifndef yystrlen +# if defined (__GLIBC__) && defined (_STRING_H) +# define yystrlen strlen +# else +/* Return the length of YYSTR. */ +static YYSIZE_T +yystrlen (const char *yystr) +{ + register const char *yys = yystr; + + while (*yys++ != '\0') + continue; + + return yys - yystr - 1; +} +# endif +# endif + +# ifndef yystpcpy +# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +static char * +yystpcpy (pTHX_ char *yydest, const char *yysrc) +{ + register char *yyd = yydest; + register const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +# endif + +#endif /* !YYERROR_VERBOSE */ + +/*----------. +| yyparse. | +`----------*/ + +int +Perl_yyparse (pTHX) +{ + int yychar; /* The lookahead symbol. */ + YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ + int yynerrs; /* Number of syntax errors so far. */ + register int yystate; + register int yyn; + int yyresult; + + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + /* Lookahead token as an internal (translated) token number. */ + int yytoken = 0; + + /* two stacks and their tools: + yyss: related to states, + yyvs: related to semantic values, + + Refer to the stacks thru separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* The state stack. */ + short *yyss; + register short *yyssp; + + /* The semantic value stack. */ + YYSTYPE *yyvs; + register YYSTYPE *yyvsp; + + /* for ease of re-allocation and automatic freeing, have two SVs whose + * SvPVX points to the stacks */ + SV *yyss_sv, *yyvs_sv; + +#ifdef DEBUGGING + /* maintain also a stack of token/rule names for debugging with -Dpv */ + const char **yyns, **yynsp; + SV *yyns_sv; +# define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) #else - setuid((UIDTYPE)uid); +# define YYPOPSTACK (yyvsp--, yyssp--) #endif + + + YYSIZE_T yystacksize = YYINITDEPTH; + + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; + + + /* When reducing, the number of symbols on the RHS of the reduced + rule. */ + int yylen; + + YYDPRINTF ((Perl_debug_log, "Starting parse\n")); + + ENTER; /* force stack free before we return */ + SAVEVPTR(PL_yycharp); + SAVEVPTR(PL_yylvalp); + PL_yycharp = &yychar; /* so PL_yyerror() can access it */ + PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ + + yyss_sv = NEWSV(73, YYINITDEPTH * sizeof(short)); + yyvs_sv = NEWSV(73, YYINITDEPTH * sizeof(YYSTYPE)); + SAVEFREESV(yyss_sv); + SAVEFREESV(yyvs_sv); + yyss = (short *) SvPVX(yyss_sv); + yyvs = (YYSTYPE *) SvPVX(yyvs_sv); + /* note that elements zero of yyvs and yyns are not used */ + yyssp = yyss; + yyvsp = yyvs; +#ifdef DEBUGGING + yyns_sv = NEWSV(73, YYINITDEPTH * sizeof(char *)); + SAVEFREESV(yyns_sv); + yyns = (const char **) SvPVX(yyns_sv); + yynsp = yyns; #endif - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); - if (!cando(S_IEXEC,TRUE,&statbuf)) - fatal("Permission denied\n"); /* they can't do this */ - } -#ifdef IAMSUID - else if (preprocess) - fatal("-P not allowed for setuid/setgid script\n"); - else - fatal("Script is not setuid/setgid in suidperl\n"); -#else -#ifndef TAINT /* we aren't taintperl or suidperl */ - /* script has a wrapper--can't run suidperl or we lose euid */ - else if (euid != uid || egid != gid) { - (void)fclose(rsfp); - (void)sprintf(buf, "%s/%s", BIN, "taintperl"); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); - } -#endif /* TAINT */ -#endif /* IAMSUID */ -#else /* !DOSUID */ -#ifndef TAINT /* we aren't taintperl or suidperl */ - if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ -#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW - fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ - if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) - || - (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) - ) - if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ -FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); -#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ - /* not set-id, must be wrapped */ - (void)fclose(rsfp); - (void)sprintf(buf, "%s/%s", BIN, "taintperl"); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); - } -#endif /* TAINT */ -#endif /* DOSUID */ - -#if !defined(IAMSUID) && !defined(TAINT) - - /* skip forward in input to the real script? */ - - while (doextract) { - if ((s = str_gets(linestr, rsfp, 0)) == Nullch) - fatal("No Perl script found in input\n"); - if (*s == '#' && s[1] == '!' && instr(s,"perl")) { - ungetc('\n',rsfp); /* to keep line count right */ - doextract = FALSE; - if (s = instr(s,"perl -")) { - s += 6; - while (s = moreswitches(s)) ; - } - if (cddir && chdir(cddir) < 0) - fatal("Can't chdir to %s",cddir); - } - } -#endif /* !defined(IAMSUID) && !defined(TAINT) */ - - defstab = stabent("_",TRUE); - - if (perldb) { - debstash = hnew(0); - stab_xhash(stabent("_DB",TRUE)) = debstash; - curstash = debstash; - lineary = stab_xarray(aadd((tmpstab = stabent("line",TRUE)))); - tmpstab->str_pok |= SP_MULTI; - subname = str_make("main",4); - DBstab = stabent("DB",TRUE); - DBstab->str_pok |= SP_MULTI; - DBsub = hadd(tmpstab = stabent("sub",TRUE)); - tmpstab->str_pok |= SP_MULTI; - DBsingle = stab_val((tmpstab = stabent("single",TRUE))); - tmpstab->str_pok |= SP_MULTI; - curstash = defstash; - } - /* init tokener */ + yystate = 0; + yyerrstatus = 0; + yynerrs = 0; + yychar = YYEMPTY; /* Cause a token to be read. */ - bufend = bufptr = str_get(linestr); - savestack = anew(Nullstab); /* for saving non-local values */ - stack = anew(Nullstab); /* for saving non-local values */ - stack->ary_flags = 0; /* not a real array */ - /* now parse the script */ + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); - error_count = 0; - if (yyparse() || error_count) { - if (minus_c) - fatal("%s had compilation errors.\n", origfilename); - else { - fatal("Execution of %s aborted due to compilation errors.\n", - origfilename); - } - } + goto yysetstate; + +/*------------------------------------------------------------. +| yynewstate -- Push a new state, which is found in yystate. | +`------------------------------------------------------------*/ + yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. so pushing a state here evens the stacks. + */ + yyssp++; + + yysetstate: + *yyssp = yystate; + + if (yyss + yystacksize - 1 <= yyssp) { + /* Get the current used size of the three stacks, in elements. */ + const YYSIZE_T yysize = yyssp - yyss + 1; - New(50,loop_stack,128,struct loop); + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyoverflowlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; + + SvGROW(yyss_sv, yystacksize * sizeof(short)); + SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); + yyss = (short *) SvPVX(yyss_sv); + yyvs = (YYSTYPE *) SvPVX(yyvs_sv); #ifdef DEBUGGING - if (debug) { - New(51,debname,128,char); - New(52,debdelim,128,char); - } + SvGROW(yyns_sv, yystacksize * sizeof(char *)); + yyns = (const char **) SvPVX(yyns_sv); + if (! yyns) + goto yyoverflowlab; + yynsp = yyns + yysize - 1; #endif - curstash = defstash; + if (!yyss || ! yyvs) + goto yyoverflowlab; - preprocess = FALSE; - if (e_fp) { - e_fp = Nullfp; - (void)UNLINK(e_tmpname); - } + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; - /* initialize everything that won't change if we undump */ - if (sigstab = stabent("SIG",allstabs)) { - sigstab->str_pok |= SP_MULTI; - (void)hadd(sigstab); - } + YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", + (unsigned long int) yystacksize)); - magicalize("!#?^~=-%0123456789.+&*()<>,\\/[|`':"); - userinit(); /* in case linked C routines want magical variables */ - - amperstab = stabent("&",allstabs); - leftstab = stabent("`",allstabs); - rightstab = stabent("'",allstabs); - sawampersand = (amperstab || leftstab || rightstab); - if (tmpstab = stabent(":",allstabs)) - str_set(STAB_STR(tmpstab),chopset); - - /* these aren't necessarily magical */ - if (tmpstab = stabent(";",allstabs)) - str_set(STAB_STR(tmpstab),"\034"); - if (tmpstab = stabent("]",allstabs)) { - str = STAB_STR(tmpstab); - str_set(str,rcsid); - strncpy(tokenbuf,rcsid+19,3); - sprintf(tokenbuf+3,"%2.2d",PATCHLEVEL); - str->str_u.str_nval = atof(tokenbuf); - str->str_nok = 1; - } - str_nset(stab_val(stabent("\"", TRUE)), " ", 1); - - stdinstab = stabent("STDIN",TRUE); - stdinstab->str_pok |= SP_MULTI; - stab_io(stdinstab) = stio_new(); - stab_io(stdinstab)->ifp = stdin; - tmpstab = stabent("stdin",TRUE); - stab_io(tmpstab) = stab_io(stdinstab); - tmpstab->str_pok |= SP_MULTI; - - tmpstab = stabent("STDOUT",TRUE); - tmpstab->str_pok |= SP_MULTI; - stab_io(tmpstab) = stio_new(); - stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; - defoutstab = tmpstab; - tmpstab = stabent("stdout",TRUE); - stab_io(tmpstab) = stab_io(defoutstab); - tmpstab->str_pok |= SP_MULTI; - - curoutstab = stabent("STDERR",TRUE); - curoutstab->str_pok |= SP_MULTI; - stab_io(curoutstab) = stio_new(); - stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; - tmpstab = stabent("stderr",TRUE); - stab_io(tmpstab) = stab_io(curoutstab); - tmpstab->str_pok |= SP_MULTI; - curoutstab = defoutstab; /* switch back to STDOUT */ - - statname = Str_new(66,0); /* last filename we did stat on */ - - perldb = FALSE; /* don't try to instrument evals */ - - if (dowarn) { - stab_check('A','Z'); - stab_check('a','z'); + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; } - if (do_undump) - abort(); + goto yybackup; - just_doit: /* come here if running an undumped a.out */ - argc--,argv++; /* skip name of script */ - if (doswitches) { - for (; argc > 0 && **argv == '-'; argc--,argv++) { - if (argv[0][1] == '-') { - argc--,argv++; - break; - } - str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); + /*-----------. + | yybackup. | + `-----------*/ + yybackup: + +/* Do appropriate processing given the current state. */ +/* Read a lookahead token if we need one and don't already have one. */ +/* yyresume: */ + + /* First try to decide what to do without reference to lookahead token. */ + + yyn = yypact[yystate]; + if (yyn == YYPACT_NINF) + goto yydefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ + if (yychar == YYEMPTY) { + YYDPRINTF ((Perl_debug_log, "Reading a token: ")); + yychar = yylex(); +# ifdef EBCDIC + if (yychar >= 0 && yychar < 255) { + yychar = NATIVE_TO_ASCII(yychar); } +# endif } -#ifdef TAINT - tainted = 1; -#endif - if (tmpstab = stabent("0",allstabs)) - str_set(STAB_STR(tmpstab),origfilename); - if (argvstab = stabent("ARGV",allstabs)) { - argvstab->str_pok |= SP_MULTI; - (void)aadd(argvstab); - aclear(stab_array(argvstab)); - for (; argc > 0; argc--,argv++) { - (void)apush(stab_array(argvstab),str_make(argv[0],0)); - } + + if (yychar <= YYEOF) { + yychar = yytoken = YYEOF; + YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); } -#ifdef TAINT - (void) stabent("ENV",TRUE); /* must test PATH and IFS */ -#endif - if (envstab = stabent("ENV",allstabs)) { - envstab->str_pok |= SP_MULTI; - (void)hadd(envstab); - hclear(stab_hash(envstab)); - if (env != environ) - environ[0] = Nullch; - for (; *env; env++) { - if (!(s = index(*env,'='))) - continue; - *s++ = '\0'; - str = str_make(s--,0); - str_magic(str, envstab, 'E', *env, s - *env); - (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); - *s = '='; - } + else { + yytoken = YYTRANSLATE (yychar); + YYDSYMPRINTF ("Next token is", yytoken, &yylval); } -#ifdef TAINT - tainted = 0; -#endif - if (tmpstab = stabent("$",allstabs)) - str_numset(STAB_STR(tmpstab),(double)getpid()); - if (setjmp(top_env)) /* sets goto_targ on longjump */ - loop_ptr = -1; /* start label stack again */ + /* If the proper action on seeing token YYTOKEN is to reduce or to + detect an error, take that action. */ + yyn += yytoken; + if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) + goto yydefault; + yyn = yytable[yyn]; + if (yyn <= 0) { + if (yyn == 0 || yyn == YYTABLE_NINF) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + if (yyn == YYFINAL) + YYACCEPT; + + /* Shift the lookahead token. */ + YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); + + /* Discard the token being shifted unless it is eof. */ + if (yychar != YYEOF) + yychar = YYEMPTY; + + *++yyvsp = yylval; #ifdef DEBUGGING - if (debug & 1024) - dump_all(); - if (debug) - fprintf(stderr,"\nEXECUTING...\n\n"); + *++yynsp = (const char *)(yytname[yytoken]); #endif - if (minus_c) { - fprintf(stderr,"%s syntax OK\n", origfilename); - exit(0); - } - /* do it */ + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; - (void) cmd_exec(main_root,G_SCALAR,-1); + yystate = yyn; + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); - if (goto_targ) - fatal("Can't find label \"%s\"--aborting",goto_targ); - exit(0); - /* NOTREACHED */ -} + goto yynewstate; -magicalize(list) -register char *list; -{ - char sym[2]; - sym[1] = '\0'; - while (*sym = *list++) - magicname(sym, Nullch, 0); -} + /*-----------------------------------------------------------. + | yydefault -- do the default action for the current state. | + `-----------------------------------------------------------*/ + yydefault: + yyn = yydefact[yystate]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; -int -magicname(sym,name,namlen) -char *sym; -char *name; -int namlen; -{ - register STAB *stab; - if (stab = stabent(sym,allstabs)) { - stab_flags(stab) = SF_VMAGIC; - str_magic(stab_val(stab), stab, 0, name, namlen); - } -} + /*-----------------------------. + | yyreduce -- Do a reduction. | + `-----------------------------*/ + yyreduce: + /* yyn is the number of a rule to reduce with. */ + yylen = yyr2[yyn]; -/* this routine is in perly.c by virtue of being sort of an alternate main() */ + /* If YYLEN is nonzero, implement the default value of the action: + "$$ = $1". + + Otherwise, the following line sets YYVAL to garbage. + This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) { + +/* contains all the rule actions; auto-generated from perly.y */ + +#define dep() deprecate("\"do\" to call subroutines") +#include "perly.act" -int -do_eval(str,optype,stash,gimme,arglast) -STR *str; -int optype; -HASH *stash; -int gimme; -int *arglast; -{ - STR **st = stack->ary_array; - int retval; - CMD *myroot; - ARRAY *ar; - int i; - char * VOLATILE oldfile = filename; - CMD * VOLATILE oldcurcmd = curcmd; - VOLATILE int oldtmps_base = tmps_base; - VOLATILE int oldsave = savestack->ary_fill; - SPAT * VOLATILE oldspat = curspat; - static char *last_eval = Nullch; - static CMD *last_root = Nullcmd; - VOLATILE int sp = arglast[0]; - char *specfilename; - - tmps_base = tmps_max; - if (curstash != stash) { - (void)savehptr(&curstash); - curstash = stash; - } - str_set(stab_val(stabent("@",TRUE)),""); - curcmd = &compiling; - if (optype == O_EVAL) { /* normal eval */ - filename = "(eval)"; - curcmd->c_line = 1; - str_sset(linestr,str); - str_cat(linestr,";"); /* be kind to them */ - } - else { - if (last_root && !in_eval) { - Safefree(last_eval); - cmd_free(last_root); - last_root = Nullcmd; - } - specfilename = str_get(str); - filename = savestr(specfilename); /* can't free this easily */ - str_set(linestr,""); - if (optype == O_REQUIRE && - hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { - filename = oldfile; - tmps_base = oldtmps_base; - st[++sp] = &str_yes; - return sp; - } - else if (*filename == '/') - rsfp = fopen(filename,"r"); - else { - ar = stab_array(incstab); - Safefree(filename); - for (i = 0; i <= ar->ary_fill; i++) { - (void)sprintf(buf,"%s/%s",str_get(afetch(ar,i,TRUE)),filename); - rsfp = fopen(buf,"r"); - if (rsfp) { - char *s = buf; - - if (*s == '.' && s[1] == '/') - s += 2; - filename = savestr(s); - break; - } - } - } - if (!rsfp) { - filename = oldfile; - tmps_base = oldtmps_base; - if (optype == O_REQUIRE) { - sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); - if (instr(tokenbuf,".h ")) - strcat(tokenbuf," (change .h to .ph maybe?)"); - if (instr(tokenbuf,".ph ")) - strcat(tokenbuf," (did you run makelib?)"); - fatal("%s",tokenbuf); - } - if (gimme != G_ARRAY) - st[++sp] = &str_undef; - return sp; - } - curcmd->c_line = 0; - } - in_eval++; - oldoldbufptr = oldbufptr = bufptr = str_get(linestr); - bufend = bufptr + linestr->str_cur; - if (++loop_ptr >= loop_max) { - loop_max += 128; - Renew(loop_stack, loop_max, struct loop); } - loop_stack[loop_ptr].loop_label = "_EVAL_"; - loop_stack[loop_ptr].loop_sp = sp; + + yyvsp -= yylen; + yyssp -= yylen; #ifdef DEBUGGING - if (debug & 4) { - deb("(Pushing label #%d _EVAL_)\n", loop_ptr); - } + yynsp -= yylen; #endif - if (setjmp(loop_stack[loop_ptr].loop_env)) { - retval = 1; - last_root = Nullcmd; - } - else { - error_count = 0; - if (rsfp) - retval = yyparse(); - else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){ - retval = 0; - eval_root = last_root; /* no point in reparsing */ - } - else if (in_eval == 1) { - if (last_root) { - Safefree(last_eval); - cmd_free(last_root); + + + *++yyvsp = yyval; +#ifdef DEBUGGING + *++yynsp = (const char *)(yytname [yyr1[yyn]]); +#endif + + /* Now shift the result of the reduction. Determine what state + that goes to, based on the state we popped back to and the rule + number reduced by. */ + + yyn = yyr1[yyn]; + + yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; + if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) + yystate = yytable[yystate]; + else + yystate = yydefgoto[yyn - YYNTOKENS]; + + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); + +#ifdef DEBUGGING + /* tmp push yystate for stack print; this is normally pushed later in + * yynewstate */ + yyssp++; + *yyssp = yystate; + YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); + yyssp--; +#endif + + goto yynewstate; + + + /*------------------------------------. + | yyerrlab -- here on detecting error | + `------------------------------------*/ + yyerrlab: + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) { + ++yynerrs; +#if YYERROR_VERBOSE + yyn = yypact[yystate]; + + if (YYPACT_NINF < yyn && yyn < YYLAST) { + YYSIZE_T yysize = 0; + const int yytype = YYTRANSLATE (yychar); + char *yymsg; + int yyx, yycount; + + yycount = 0; + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. */ + for (yyx = yyn < 0 ? -yyn : 0; + yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + yysize += yystrlen (yytname[yyx]) + 15, yycount++; + yysize += yystrlen ("syntax error, unexpected ") + 1; + yysize += yystrlen (yytname[yytype]); + New(yymsg, yysize, char *); + if (yymsg != 0) { + const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); + yyp = yystpcpy (yyp, yytname[yytype]); + + if (yycount < 5) { + yycount = 0; + for (yyx = yyn < 0 ? -yyn : 0; + yyx < (int) (sizeof (yytname) / sizeof (char *)); + yyx++) + { + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { + const char *yyq = ! yycount ? + ", expecting " : " or "; + yyp = yystpcpy (yyp, yyq); + yyp = yystpcpy (yyp, yytname[yyx]); + yycount++; + } + } + } + yyerror (yymsg); + YYSTACK_FREE (yymsg); } - last_eval = savestr(bufptr); - last_root = Nullcmd; - retval = yyparse(); - if (!retval) - last_root = eval_root; + else + yyerror ("syntax error; also virtual memory exhausted"); } else - retval = yyparse(); +#endif /* YYERROR_VERBOSE */ + yyerror ("syntax error"); } - myroot = eval_root; /* in case cmd_exec does another eval! */ - if (retval || error_count) { - st = stack->ary_array; - sp = arglast[0]; - if (gimme != G_ARRAY) - st[++sp] = &str_undef; - last_root = Nullcmd; /* can't free on error, for some reason */ - if (rsfp) { - fclose(rsfp); - rsfp = 0; - if (optype == O_REQUIRE) - fatal("%s", str_get(stab_val(stabent("@",TRUE)))); + + + if (yyerrstatus == 3) { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ + + /* Return failure if at end of input. */ + if (yychar == YYEOF) { + /* Pop the error token. */ + YYPOPSTACK; + /* Pop the rest of the stack. */ + while (yyss < yyssp) { + YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); + YYPOPSTACK; + } + YYABORT; } + + YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); + yychar = YYEMPTY; + } - else { - sp = cmd_exec(eval_root,gimme,sp); - st = stack->ary_array; - for (i = arglast[0] + 1; i <= sp; i++) - st[i] = str_static(st[i]); - /* if we don't save result, free zaps it */ - if (in_eval != 1 && myroot != last_root) - cmd_free(myroot); - if (optype != O_EVAL) { - if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { - (void)hstore(stab_hash(incstab), specfilename, - strlen(specfilename), str_make(filename,0), 0 ); + + /* Else will try to reuse lookahead token after shifting the error + token. */ + goto yyerrlab1; + + + /*----------------------------------------------------. + | yyerrlab1 -- error raised explicitly by an action. | + `----------------------------------------------------*/ + yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ + + for (;;) { + yyn = yypact[yystate]; + if (yyn != YYPACT_NINF) { + yyn += YYTERROR; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { + yyn = yytable[yyn]; + if (0 < yyn) + break; } - else if (optype == O_REQUIRE) - fatal("%s did not return a true value", specfilename); } - } - in_eval--; + + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; + + YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); + yyvsp--; #ifdef DEBUGGING - if (debug & 4) { - char *tmps = loop_stack[loop_ptr].loop_label; - deb("(Popping label #%d %s)\n",loop_ptr, - tmps ? tmps : "" ); - } + yynsp--; #endif - loop_ptr--; - filename = oldfile; - curcmd = oldcurcmd; - tmps_base = oldtmps_base; - curspat = oldspat; - if (savestack->ary_fill > oldsave) /* let them use local() */ - restorelist(oldsave); - return sp; -} + yystate = *--yyssp; -/* This routine handles any switches that can be given during run */ + YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); + } -static char * -moreswitches(s) -char *s; -{ - reswitch: - switch (*s) { - case 'a': - minus_a = TRUE; - s++; - return s; - case 'c': - minus_c = TRUE; - s++; - return s; - case 'd': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -d allowed in setuid scripts"); -#endif - perldb = TRUE; - s++; - return s; - case 'D': + if (yyn == YYFINAL) + YYACCEPT; + + YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); + + *++yyvsp = yylval; #ifdef DEBUGGING -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -D allowed in setuid scripts"); -#endif - debug = atoi(s+1); -#else - warn("Recompile perl with -DDEBUGGING to use -D switch\n"); -#endif - break; - case 'i': - inplace = savestr(s+1); - for (s = inplace; *s && !isspace(*s); s++) ; - *s = '\0'; - argvoutstab = stabent("ARGVOUT",TRUE); - break; - case 'I': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif - if (*++s) { - (void)apush(stab_array(incstab),str_make(s,0)); - } - else - fatal("No space allowed after -I"); - break; - case 'n': - minus_n = TRUE; - s++; - return s; - case 'p': - minus_p = TRUE; - s++; - return s; - case 'u': - do_undump = TRUE; - s++; - return s; - case 'U': - unsafe = TRUE; - s++; - return s; - case 'v': - fputs(rcsid,stdout); - fputs("\nCopyright (c) 1989, 1990, Larry Wall\n",stdout); -#ifdef MSDOS - fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", - stdout); + *++yynsp =""; #endif - fputs("\n\ -Perl may be copied only under the terms of the GNU General Public License,\n\ -a copy of which can be found with the Perl 3.0 distribution kit.\n",stdout); - exit(0); - case 'w': - dowarn = TRUE; - s++; - return s; - case ' ': - case '\n': - case '\t': - break; - default: - fatal("Switch meaningless after -x: -%s",s); - } - return Nullch; + + yystate = yyn; + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); + + goto yynewstate; + + + /*-------------------------------------. + | yyacceptlab -- YYACCEPT comes here. | + `-------------------------------------*/ + yyacceptlab: + yyresult = 0; + goto yyreturn; + + /*-----------------------------------. + | yyabortlab -- YYABORT comes here. | + `-----------------------------------*/ + yyabortlab: + yyresult = 1; + goto yyreturn; + + /*----------------------------------------------. + | yyoverflowlab -- parser overflow comes here. | + `----------------------------------------------*/ + yyoverflowlab: + yyerror ("parser stack overflow"); + yyresult = 2; + /* Fall through. */ + + yyreturn: + + LEAVE; /* force stack free before we return */ + + return yyresult; } + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */