X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl.c;h=77bcb4d02ccd23bc12c71230c9ad1d8f0ad46838;hb=046ff0edbba626fc32c37c08cfba99cfeef41b6d;hp=337e190d8748050df22845ff2cf74bc77816ea1d;hpb=8990e3071044a96302560bbdb5706f3e74cf1bef;p=p5sagit%2Fp5-mst-13.2.git diff --git a/perl.c b/perl.c index 337e190..77bcb4d 100644 --- a/perl.c +++ b/perl.c @@ -1,64 +1,26 @@ -/* - * Copyright (c) 1991, 1992, 1993, 1994 Larry Wall +/* perl.c + * + * Copyright (c) 1987-1996 Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * - * $Log: perl.c,v $ - * Revision 4.1 92/08/07 18:25:50 lwall - * - * Revision 4.0.1.7 92/06/08 14:50:39 lwall - * patch20: PERLLIB now supports multiple directories - * patch20: running taintperl explicitly now does checks even if $< == $> - * patch20: -e 'cmd' no longer fails silently if /tmp runs out of space - * patch20: perl -P now uses location of sed determined by Configure - * patch20: form feed for formats is now specifiable via $^L - * patch20: paragraph mode now skips extra newlines automatically - * patch20: oldeval "1 #comment" didn't work - * patch20: couldn't require . files - * patch20: semantic compilation errors didn't abort execution - * - * Revision 4.0.1.6 91/11/11 16:38:45 lwall - * patch19: default arg for shift was wrong after first subroutine definition - * patch19: op/regexp.t failed from missing arg to bcmp() - * - * Revision 4.0.1.5 91/11/05 18:03:32 lwall - * patch11: random cleanup - * patch11: $0 was being truncated at times - * patch11: cppstdin now installed outside of source directory - * patch11: -P didn't allow use of #elif or #undef - * patch11: prepared for ctype implementations that don't define isascii() - * patch11: added oldeval {} - * patch11: oldeval confused by string containing null - * - * Revision 4.0.1.4 91/06/10 01:23:07 lwall - * patch10: perl -v printed incorrect copyright notice - * - * Revision 4.0.1.3 91/06/07 11:40:18 lwall - * patch4: changed old $^P to $^X - * - * Revision 4.0.1.2 91/06/07 11:26:16 lwall - * patch4: new copyright notice - * patch4: added $^P variable to control calling of perldb routines - * patch4: added $^F variable to specify maximum system fd, default 2 - * patch4: debugger lost track of lines in oldeval - * - * Revision 4.0.1.1 91/04/11 17:49:05 lwall - * patch1: fixed undefined environ problem - * - * Revision 4.0 91/03/20 01:37:44 lwall - * 4.0 baseline. - * */ -/*SUPPRESS 560*/ +/* + * "A ship then new they built for him/of mithril and of elven glass" --Bilbo + */ #include "EXTERN.h" #include "perl.h" -#include "perly.h" #include "patchlevel.h" -char rcsid[] = "$RCSfile: perl.c,v $$Revision: 5.0 $$Date: 92/08/07 18:25:50 $\nPatch level: ###\n"; +/* XXX If this causes problems, set i_unistd=undef in the hint file. */ +#ifdef I_UNISTD +#include +#endif + +dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n"; #ifdef IAMSUID #ifndef DOSUID @@ -72,26 +34,54 @@ char rcsid[] = "$RCSfile: perl.c,v $$Revision: 5.0 $$Date: 92/08/07 18:25:50 $\n #endif #endif -static void incpush(); -static void validate_suid(); -static void find_beginning(); -static void init_main_stash(); -static void open_script(); -static void init_debugger(); -static void init_stacks(); -static void init_lexer(); -static void init_predump_symbols(); -static void init_postdump_symbols(); -static void init_perllib(); +#define I_REINIT \ + STMT_START { \ + chopset = " \n-"; \ + copline = NOLINE; \ + curcop = &compiling; \ + curcopdb = NULL; \ + cxstack_ix = -1; \ + cxstack_max = 128; \ + dbargs = 0; \ + dlmax = 128; \ + laststatval = -1; \ + laststype = OP_STAT; \ + maxscream = -1; \ + maxsysfd = MAXSYSFD; \ + statname = Nullsv; \ + tmps_floor = -1; \ + tmps_ix = -1; \ + op_mask = NULL; \ + dlmax = 128; \ + laststatval = -1; \ + laststype = OP_STAT; \ + } STMT_END + +static void find_beginning _((void)); +static void forbid_setid _((char *)); +static void incpush _((char *, int)); +static void init_ids _((void)); +static void init_debugger _((void)); +static void init_lexer _((void)); +static void init_main_stash _((void)); +static void init_perllib _((void)); +static void init_postdump_symbols _((int, char **, char **)); +static void init_predump_symbols _((void)); +static void init_stacks _((void)); +static void my_exit_jump _((void)) __attribute__((noreturn)); +static void nuke_stacks _((void)); +static void open_script _((char *, bool, SV *)); +static void usage _((char *)); +static void validate_suid _((char *, char*)); + +static int fdscript = -1; PerlInterpreter * perl_alloc() { PerlInterpreter *sv_interp; - PerlInterpreter junk; curinterp = 0; -/* Zero(&junk, 1, PerlInterpreter); */ New(53, sv_interp, 1, PerlInterpreter); return sv_interp; } @@ -112,15 +102,22 @@ register PerlInterpreter *sv_interp; linestr = NEWSV(65,80); sv_upgrade(linestr,SVt_PVIV); - SvREADONLY_on(&sv_undef); + if (!SvREADONLY(&sv_undef)) { + SvREADONLY_on(&sv_undef); - sv_setpv(&sv_no,No); - SvNV(&sv_no); - SvREADONLY_on(&sv_no); + sv_setpv(&sv_no,No); + SvNV(&sv_no); + SvREADONLY_on(&sv_no); - sv_setpv(&sv_yes,Yes); - SvNV(&sv_yes); - SvREADONLY_on(&sv_yes); + sv_setpv(&sv_yes,Yes); + SvNV(&sv_yes); + SvREADONLY_on(&sv_yes); + } + + nrs = newSVpv("\n", 1); + rs = SvREFCNT_inc(nrs); + + pidstatus = newHV(); #ifdef MSDOS /* @@ -134,36 +131,34 @@ register PerlInterpreter *sv_interp; } #ifdef MULTIPLICITY - chopset = " \n-"; - copline = NOLINE; - curcop = &compiling; - dlmax = 128; - laststatval = -1; - laststype = OP_STAT; - maxscream = -1; - maxsysfd = MAXSYSFD; - nrs = "\n"; - nrschar = '\n'; - nrslen = 1; - rs = "\n"; - rschar = '\n'; - rsfp = Nullfp; - rslen = 1; - statname = Nullsv; - tmps_floor = -1; + I_REINIT; + perl_destruct_level = 1; +#else + if(perl_destruct_level > 0) + I_REINIT; #endif - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); - tainting = (euid != uid || egid != gid); - sprintf(patchlevel,"%3.3s%2.2d", strchr(rcsid,'5'), PATCHLEVEL); + init_ids(); + + STATUS_ALL_SUCCESS; + + SET_NUMERIC_STANDARD(); +#if defined(SUBVERSION) && SUBVERSION > 0 + sprintf(patchlevel, "%7.5f", (double) 5 + + ((double) PATCHLEVEL / (double) 1000) + + ((double) SUBVERSION / (double) 100000)); +#else + sprintf(patchlevel, "%5.3f", (double) 5 + + ((double) PATCHLEVEL / (double) 1000)); +#endif + +#if defined(LOCAL_PATCH_COUNT) + localpatches = local_patches; /* For possible -v */ +#endif - (void)sprintf(strchr(rcsid,'#'), "%d\n", PATCHLEVEL); + PerlIO_init(); /* Hook to IO system */ fdpid = newAV(); /* for remembering popen pids by fd */ - pidstatus = newHV();/* for remembering status of dead pids */ init_stacks(); ENTER; @@ -173,67 +168,250 @@ void perl_destruct(sv_interp) register PerlInterpreter *sv_interp; { + int destruct_level; /* 0=none, 1=full, 2=full with checks */ I32 last_sv_count; + HV *hv; if (!(curinterp = sv_interp)) return; - LEAVE; - FREE_TMPS(); -#ifndef EMBED - /* The exit() function may do everything that needs doing. */ - if (!sv_rvcount) - return; + destruct_level = perl_destruct_level; +#ifdef DEBUGGING + { + char *s; + if (s = getenv("PERL_DESTRUCT_LEVEL")) { + int i = atoi(s); + if (destruct_level < i) + destruct_level = i; + } + } #endif - /* Not so lucky. We must account for everything. First the syntax tree. */ + /* unhook hooks which will soon be, or use, destroyed data */ + SvREFCNT_dec(warnhook); + warnhook = Nullsv; + SvREFCNT_dec(diehook); + diehook = Nullsv; + SvREFCNT_dec(parsehook); + parsehook = Nullsv; + + LEAVE; + FREETMPS; + + /* We must account for everything. First the syntax tree. */ if (main_root) { curpad = AvARRAY(comppad); op_free(main_root); main_root = 0; } + if (sv_objcount) { + /* + * Try to destruct global references. We do this first so that the + * destructors and destructees still exist. Some sv's might remain. + * Non-referenced objects are on their own. + */ + + dirty = TRUE; + sv_clean_objs(); + } - /* - * Try to destruct global references. We do this first so that the - * destructors and destructees still exist. This code currently - * will break simple reference loops but may fail on more complicated - * ones. If so, the code below will clean up, but any destructors - * may fail to find what they're looking for. - */ - if (sv_count != 0) - sv_clean_refs(); + if (destruct_level == 0){ - /* Delete self-reference from main symbol table */ - GvHV(gv_fetchpv("::_main",TRUE)) = 0; - --SvREFCNT(defstash); + DEBUG_P(debprofdump()); + + /* The exit() function will do everything that needs doing. */ + return; + } - /* Try to destruct main symbol table. May fail on reference loops. */ - SvREFCNT_dec(defstash); + /* loosen bonds of global variables */ - FREE_TMPS(); -#ifdef DEBUGGING - if (scopestack_ix != 0) - warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); - if (savestack_ix != 0) - warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); - if (tmps_floor != -1) - warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); - if (cxstack_ix != -1) - warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); -#endif + if(rsfp) { + (void)PerlIO_close(rsfp); + rsfp = Nullfp; + } + + /* Filters for program text */ + SvREFCNT_dec(rsfp_filters); + rsfp_filters = Nullav; + + /* switches */ + preprocess = FALSE; + minus_n = FALSE; + minus_p = FALSE; + minus_l = FALSE; + minus_a = FALSE; + minus_F = FALSE; + doswitches = FALSE; + dowarn = FALSE; + doextract = FALSE; + sawampersand = FALSE; /* must save all match strings */ + sawstudy = FALSE; /* do fbm_instr on all strings */ + sawvec = FALSE; + unsafe = FALSE; + + Safefree(inplace); + inplace = Nullch; + + Safefree(e_tmpname); + e_tmpname = Nullch; + + if (e_fp) { + PerlIO_close(e_fp); + e_fp = Nullfp; + } + + /* magical thingies */ + + Safefree(ofs); /* $, */ + ofs = Nullch; + + Safefree(ors); /* $\ */ + ors = Nullch; + + SvREFCNT_dec(nrs); /* $\ helper */ + nrs = Nullsv; + + multiline = 0; /* $* */ + + SvREFCNT_dec(statname); + statname = Nullsv; + statgv = Nullgv; + + /* defgv, aka *_ should be taken care of elsewhere */ + +#if 0 /* just about all regexp stuff, seems to be ok */ + + /* shortcuts to regexp stuff */ + leftgv = Nullgv; + ampergv = Nullgv; + + SAVEFREEOP(curpm); + SAVEFREEOP(oldlastpm); /* for saving regexp context during debugger */ + + regprecomp = NULL; /* uncompiled string. */ + regparse = NULL; /* Input-scan pointer. */ + regxend = NULL; /* End of input for compile */ + regnpar = 0; /* () count. */ + regcode = NULL; /* Code-emit pointer; ®dummy = don't. */ + regsize = 0; /* Code size. */ + regnaughty = 0; /* How bad is this pattern? */ + regsawback = 0; /* Did we see \1, ...? */ + + reginput = NULL; /* String-input pointer. */ + regbol = NULL; /* Beginning of input, for ^ check. */ + regeol = NULL; /* End of input, for $ check. */ + regstartp = (char **)NULL; /* Pointer to startp array. */ + regendp = (char **)NULL; /* Ditto for endp. */ + reglastparen = 0; /* Similarly for lastparen. */ + regtill = NULL; /* How far we are required to go. */ + regflags = 0; /* are we folding, multilining? */ + regprev = (char)NULL; /* char before regbol, \n if none */ + +#endif /* if 0 */ + + /* clean up after study() */ + SvREFCNT_dec(lastscream); + lastscream = Nullsv; + Safefree(screamfirst); + screamfirst = 0; + Safefree(screamnext); + screamnext = 0; + + /* startup and shutdown function lists */ + SvREFCNT_dec(beginav); + SvREFCNT_dec(endav); + beginav = Nullav; + endav = Nullav; + + /* temp stack during pp_sort() */ + SvREFCNT_dec(sortstack); + sortstack = Nullav; + + /* shortcuts just get cleared */ + envgv = Nullgv; + siggv = Nullgv; + incgv = Nullgv; + errgv = Nullgv; + argvgv = Nullgv; + argvoutgv = Nullgv; + stdingv = Nullgv; + last_in_gv = Nullgv; + + /* reset so print() ends up where we expect */ + setdefout(Nullgv); + + /* Prepare to destruct main symbol table. */ + + hv = defstash; + defstash = 0; + SvREFCNT_dec(hv); + + FREETMPS; + if (destruct_level >= 2) { + if (scopestack_ix != 0) + warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); + if (savestack_ix != 0) + warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); + if (tmps_floor != -1) + warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); + if (cxstack_ix != -1) + warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); + } /* Now absolutely destruct everything, somehow or other, loops or no. */ -#ifdef APPARENTLY_UNNECESSARY - if (sv_count != 0) - sv_clean_magic(); -#endif last_sv_count = 0; + SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */ while (sv_count != 0 && sv_count != last_sv_count) { last_sv_count = sv_count; sv_clean_all(); } + SvFLAGS(strtab) &= ~SVTYPEMASK; + SvFLAGS(strtab) |= SVt_PVHV; + + /* Destruct the global string table. */ + { + /* Yell and reset the HeVAL() slots that are still holding refcounts, + * so that sv_free() won't fail on them. + */ + I32 riter; + I32 max; + HE *hent; + HE **array; + + riter = 0; + max = HvMAX(strtab); + array = HvARRAY(strtab); + hent = array[0]; + for (;;) { + if (hent) { + warn("Unbalanced string table refcount: (%d) for \"%s\"", + HeVAL(hent) - Nullsv, HeKEY(hent)); + HeVAL(hent) = Nullsv; + hent = HeNEXT(hent); + } + if (!hent) { + if (++riter > max) + break; + hent = array[riter]; + } + } + } + SvREFCNT_dec(strtab); + if (sv_count != 0) warn("Scalars leaked: %d\n", sv_count); + + sv_free_arenas(); + + /* No SVs have survived, need to clean out */ + linestr = NULL; + pidstatus = Nullhv; + if (origfilename) + Safefree(origfilename); + nuke_stacks(); + hints = 0; /* Reset hints. Should hints be per-interpreter ? */ + + DEBUG_P(debprofdump()); } void @@ -244,20 +422,24 @@ PerlInterpreter *sv_interp; return; Safefree(sv_interp); } +#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) +char *getenv _((char *)); /* Usually in */ +#endif int -perl_parse(sv_interp, argc, argv, env) +perl_parse(sv_interp, xsinit, argc, argv, env) PerlInterpreter *sv_interp; -register int argc; -register char **argv; +void (*xsinit)_((void)); +int argc; +char **argv; char **env; { register SV *sv; register char *s; - char *scriptname; - char *getenv(); - bool dosearch = FALSE; + char *scriptname = NULL; + VOL bool dosearch = FALSE; char *validarg = ""; + AV* comppadlist; #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW #ifdef IAMSUID @@ -270,38 +452,51 @@ setuid perl scripts securely.\n"); if (!(curinterp = sv_interp)) return 255; - if (main_root) - op_free(main_root); - main_root = 0; +#if defined(NeXT) && defined(__DYNAMIC__) + _dyld_lookup_and_bind + ("__environ", (unsigned long *) &environ_pointer, NULL); +#endif /* environ */ origargv = argv; origargc = argc; +#ifndef VMS /* VMS doesn't have environ array */ origenviron = environ; - - switch (setjmp(top_env)) { - case 1: - statusvalue = 255; - case 2: - curstash = defstash; - if (endav) - calllist(endav); - return(statusvalue); /* my_exit() was called */ - case 3: - fprintf(stderr, "panic: top_env\n"); - return 1; - } +#endif + e_tmpname = Nullch; if (do_undump) { /* Come here if running an undumped a.out. */ - origfilename = savestr(argv[0]); + origfilename = savepv(argv[0]); do_undump = FALSE; cxstack_ix = -1; /* start label stack again */ + init_ids(); init_postdump_symbols(argc,argv,env); return 0; } + if (main_root) + op_free(main_root); + main_root = 0; + + time(&basetime); + + switch (Sigsetjmp(top_env,1)) { + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + if (endav) + calllist(endav); + return STATUS_NATIVE_EXPORT; + case 3: + PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); + return 1; + } + sv_setpvn(linestr,"",0); sv = newSVpv("",0); /* first used for -I flags */ SAVEFREESV(sv); @@ -319,16 +514,19 @@ setuid perl scripts securely.\n"); reswitch: switch (*s) { case '0': + case 'F': case 'a': case 'c': case 'd': case 'D': + case 'h': case 'i': case 'l': + case 'M': + case 'm': case 'n': case 'p': case 's': - case 'T': case 'u': case 'U': case 'v': @@ -337,54 +535,121 @@ setuid perl scripts securely.\n"); goto reswitch; break; + case 'T': + tainting = TRUE; + s++; + goto reswitch; + case 'e': if (euid != uid || egid != gid) croak("No -e allowed in setuid scripts"); if (!e_fp) { - e_tmpname = savestr(TMPPATH); + e_tmpname = savepv(TMPPATH); (void)mktemp(e_tmpname); if (!*e_tmpname) croak("Can't mktemp()"); - e_fp = fopen(e_tmpname,"w"); + e_fp = PerlIO_open(e_tmpname,"w"); if (!e_fp) croak("Cannot open temporary file"); } - if (argv[1]) { - fputs(argv[1],e_fp); + if (*++s) + PerlIO_puts(e_fp,s); + else if (argv[1]) { + PerlIO_puts(e_fp,argv[1]); argc--,argv++; } - (void)putc('\n', e_fp); + else + croak("No code specified for -e"); + (void)PerlIO_putc(e_fp,'\n'); break; case 'I': - taint_not("-I"); + forbid_setid("-I"); sv_catpv(sv,"-"); sv_catpv(sv,s); sv_catpv(sv," "); if (*++s) { - (void)av_push(GvAVn(incgv),newSVpv(s,0)); + incpush(s, TRUE); } else if (argv[1]) { - (void)av_push(GvAVn(incgv),newSVpv(argv[1],0)); + incpush(argv[1], TRUE); sv_catpv(sv,argv[1]); argc--,argv++; sv_catpv(sv," "); } break; case 'P': - taint_not("-P"); + forbid_setid("-P"); preprocess = TRUE; s++; goto reswitch; case 'S': - taint_not("-S"); + forbid_setid("-S"); dosearch = TRUE; s++; goto reswitch; + case 'V': + if (!preambleav) + preambleav = newAV(); + av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); + if (*++s != ':') { + Sv = newSVpv("print myconfig();",0); +#ifdef VMS + sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); +#else + sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); +#endif +#if defined(DEBUGGING) || defined(NOEMBED) || defined(MULTIPLICITY) + strcpy(buf,"\" Compile-time options:"); +# ifdef DEBUGGING + strcat(buf," DEBUGGING"); +# endif +# ifdef NOEMBED + strcat(buf," NOEMBED"); +# endif +# ifdef MULTIPLICITY + strcat(buf," MULTIPLICITY"); +# endif + strcat(buf,"\\n\","); + sv_catpv(Sv,buf); +#endif +#if defined(LOCAL_PATCH_COUNT) + if (LOCAL_PATCH_COUNT > 0) + { int i; + sv_catpv(Sv,"print \" Locally applied patches:\\n\","); + for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { + if (localpatches[i]) { + sprintf(buf,"\" \\t%s\\n\",",localpatches[i]); + sv_catpv(Sv,buf); + } + } + } +#endif + sprintf(buf,"\" Built under %s\\n\",",OSNAME); + sv_catpv(Sv,buf); +#ifdef __DATE__ +# ifdef __TIME__ + sprintf(buf,"\" Compiled at %s %s\\n\"",__DATE__,__TIME__); +# else + sprintf(buf,"\" Compiled on %s\\n\"",__DATE__); +# endif + sv_catpv(Sv,buf); +#endif + sv_catpv(Sv,"; $\"=\"\\n \"; print \" \\@INC:\\n @INC\\n\""); + } + else { + Sv = newSVpv("config_vars(qw(",0); + sv_catpv(Sv, ++s); + sv_catpv(Sv, "))"); + s += strlen(s); + } + av_push(preambleav, Sv); + scriptname = BIT_BUCKET; /* don't look for script or read stdin */ + goto reswitch; case 'x': doextract = TRUE; s++; if (*s) - cddir = savestr(s); + cddir = savepv(s); break; case '-': argc--,argv++; @@ -396,17 +661,19 @@ setuid perl scripts securely.\n"); } } switch_end: - scriptname = argv[0]; + if (!scriptname) + scriptname = argv[0]; if (e_fp) { - if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp)) - croak("Can't write to temp file for -e: %s", strerror(errno)); + if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp)) + croak("Can't write to temp file for -e: %s", Strerror(errno)); + e_fp = Nullfp; argc++,argv--; scriptname = e_tmpname; } else if (scriptname == Nullch) { #ifdef MSDOS - if ( isatty(fileno(stdin)) ) - moreswitches("v"); + if ( isatty(PerlIO_fileno(PerlIO_stdin())) ) + moreswitches("h"); #endif scriptname = "-"; } @@ -415,25 +682,35 @@ setuid perl scripts securely.\n"); open_script(scriptname,dosearch,sv); - validate_suid(validarg); + validate_suid(validarg, scriptname); if (doextract) find_beginning(); - if (perldb) - init_debugger(); + compcv = (CV*)NEWSV(1104,0); + sv_upgrade((SV *)compcv, SVt_PVCV); + CvUNIQUE_on(compcv); - pad = newAV(); - comppad = pad; + comppad = newAV(); av_push(comppad, Nullsv); curpad = AvARRAY(comppad); - padname = newAV(); - comppad_name = padname; + comppad_name = newAV(); comppad_name_fill = 0; min_intro_pending = 0; padix = 0; - perl_init_ext(); /* in case linked C routines want magical variables */ + comppadlist = newAV(); + AvREAL_off(comppadlist); + av_store(comppadlist, 0, (SV*)comppad_name); + av_store(comppadlist, 1, (SV*)comppad); + CvPADLIST(compcv) = comppadlist; + + boot_core_UNIVERSAL(); + if (xsinit) + (*xsinit)(); /* in case linked C routines want magical variables */ +#ifdef VMS + init_os_extras(); +#endif init_predump_symbols(); if (!do_undump) @@ -455,18 +732,16 @@ setuid perl scripts securely.\n"); curcop->cop_line = 0; curstash = defstash; preprocess = FALSE; - if (e_fp) { - e_fp = Nullfp; + if (e_tmpname) { (void)UNLINK(e_tmpname); + Safefree(e_tmpname); + e_tmpname = Nullch; } /* now that script is parsed, we can modify record separator */ - - rs = nrs; - rslen = nrslen; - rschar = nrschar; - rspara = (nrslen == 2); - sv_setpvn(GvSV(gv_fetchpv("/", TRUE)), rs, rslen); + SvREFCNT_dec(rs); + rs = SvREFCNT_inc(nrs); + sv_setsv(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs); if (do_undump) my_unexec(); @@ -474,6 +749,16 @@ setuid perl scripts securely.\n"); if (dowarn) gv_check(defstash); + LEAVE; + FREETMPS; + +#ifdef DEBUGGING_MSTATS + if ((s=getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) + dump_mstats("after compilation:"); +#endif + + ENTER; + restartop = 0; return 0; } @@ -483,37 +768,47 @@ PerlInterpreter *sv_interp; { if (!(curinterp = sv_interp)) return 255; - switch (setjmp(top_env)) { + switch (Sigsetjmp(top_env,1)) { case 1: cxstack_ix = -1; /* start context stack again */ break; case 2: + /* my_exit() was called */ curstash = defstash; if (endav) calllist(endav); - FREE_TMPS(); - return(statusvalue); /* my_exit() was called */ + FREETMPS; +#ifdef DEBUGGING_MSTATS + if (getenv("PERL_DEBUG_MSTATS")) + dump_mstats("after execution: "); +#endif + return STATUS_NATIVE_EXPORT; case 3: if (!restartop) { - fprintf(stderr, "panic: restartop\n"); - FREE_TMPS(); + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; return 1; } - if (stack != mainstack) { + if (curstack != mainstack) { dSP; - SWITCHSTACK(stack, mainstack); + SWITCHSTACK(curstack, mainstack); } break; } + DEBUG_r(PerlIO_printf(PerlIO_stderr(), "%s $` $& $' support.\n", + sawampersand ? "Enabling" : "Omitting")); + if (!restartop) { DEBUG_x(dump_all()); - DEBUG(fprintf(stderr,"\nEXECUTING...\n\n")); + DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); if (minus_c) { - fprintf(stderr,"%s syntax OK\n", origfilename); + PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename); my_exit(0); } + if (perldb && DBsingle) + sv_setiv(DBsingle, 1); } /* do it */ @@ -521,92 +816,348 @@ PerlInterpreter *sv_interp; if (restartop) { op = restartop; restartop = 0; - run(); + runops(); } else if (main_start) { op = main_start; - run(); + runops(); } my_exit(0); + return 0; } -void -my_exit(status) -int status; +SV* +perl_get_sv(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PV); + if (gv) + return GvSV(gv); + return Nullsv; +} + +AV* +perl_get_av(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PVAV); + if (create) + return GvAVn(gv); + if (gv) + return GvAV(gv); + return Nullav; +} + +HV* +perl_get_hv(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PVHV); + if (create) + return GvHVn(gv); + if (gv) + return GvHV(gv); + return Nullhv; +} + +CV* +perl_get_cv(name, create) +char* name; +I32 create; { - statusvalue = (unsigned short)(status & 0xffff); - longjmp(top_env, 2); + GV* gv = gv_fetchpv(name, create, SVt_PVCV); + if (create && !GvCVu(gv)) + return newSUB(start_subparse(FALSE, 0), + newSVOP(OP_CONST, 0, newSVpv(name,0)), + Nullop, + Nullop); + if (gv) + return GvCVu(gv); + return Nullcv; } /* Be sure to refetch the stack pointer after calling these routines. */ -int -perl_callargv(subname, sp, gimme, argv) +I32 +perl_call_argv(subname, flags, argv) char *subname; -register I32 sp; /* current stack pointer */ -I32 gimme; /* TRUE if called in list context */ -register char **argv; /* null terminated arg list, NULL for no arglist */ +I32 flags; /* See G_* flags in cop.h */ +register char **argv; /* null terminated arg list */ { - register I32 items = 0; - I32 hasargs = (argv != 0); + dSP; - av_store(stack, ++sp, Nullsv); /* reserve spot for sub reference */ - if (hasargs) { + PUSHMARK(sp); + if (argv) { while (*argv) { - av_store(stack, ++sp, sv_2mortal(newSVpv(*argv,0))); - items++; + XPUSHs(sv_2mortal(newSVpv(*argv,0))); argv++; } + PUTBACK; } - return perl_callpv(subname, sp, gimme, hasargs, items); + return perl_call_pv(subname, flags); } -int -perl_callpv(subname, sp, gimme, hasargs, numargs) -char *subname; -I32 sp; /* stack pointer after args are pushed */ -I32 gimme; /* TRUE if called in list context */ -I32 hasargs; /* whether to create a @_ array for routine */ -I32 numargs; /* how many args are pushed on the stack */ +I32 +perl_call_pv(subname, flags) +char *subname; /* name of the subroutine */ +I32 flags; /* See G_* flags in cop.h */ { - return perl_callsv((SV*)gv_fetchpv(subname, TRUE), - sp, gimme, hasargs, numargs); + return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); +} + +I32 +perl_call_method(methname, flags) +char *methname; /* name of the subroutine */ +I32 flags; /* See G_* flags in cop.h */ +{ + dSP; + OP myop; + if (!op) + op = &myop; + XPUSHs(sv_2mortal(newSVpv(methname,0))); + PUTBACK; + pp_method(); + return perl_call_sv(*stack_sp--, flags); } /* May be called with any of a CV, a GV, or an SV containing the name. */ -int -perl_callsv(sv, sp, gimme, hasargs, numargs) +I32 +perl_call_sv(sv, flags) SV* sv; -I32 sp; /* stack pointer after args are pushed */ -I32 gimme; /* TRUE if called in list context */ -I32 hasargs; /* whether to create a @_ array for routine */ -I32 numargs; /* how many args are pushed on the stack */ +I32 flags; /* See G_* flags in cop.h */ { - BINOP myop; /* fake syntax tree node */ + LOGOP myop; /* fake syntax tree node */ + SV** sp = stack_sp; + I32 oldmark = TOPMARK; + I32 retval; + Sigjmp_buf oldtop; + I32 oldscope; + static CV *DBcv; - ENTER; - SAVETMPS; + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } + SAVESPTR(op); - stack_base = AvARRAY(stack); - stack_sp = stack_base + sp - numargs - 1; op = (OP*)&myop; - Zero(op, 1, BINOP); - pp_pushmark(); /* doesn't look at op, actually, except to return */ + Zero(op, 1, LOGOP); + EXTEND(stack_sp, 1); *++stack_sp = sv; - stack_sp += numargs; + oldscope = scopestack_ix; - if (hasargs) { + if (!(flags & G_NOARGS)) myop.op_flags = OPf_STACKED; - myop.op_last = (OP*)&myop; + myop.op_next = Nullop; + myop.op_flags |= OPf_KNOW; + if (flags & G_ARRAY) + myop.op_flags |= OPf_LIST; + + if (perldb && curstash != debstash + /* Handle first BEGIN of -d. */ + && (DBcv || (DBcv = GvCV(DBsub))) + /* Try harder, since this may have been a sighandler, thus + * curstash may be meaningless. */ + && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash)) + op->op_private |= OPpENTERSUB_DB; + + if (flags & G_EVAL) { + Copy(top_env, oldtop, 1, Sigjmp_buf); + + cLOGOP->op_other = op; + markstack_ptr--; + /* we're trying to emulate pp_entertry() here */ + { + register CONTEXT *cx; + I32 gimme = GIMME; + + ENTER; + SAVETMPS; + + push_return(op->op_next); + PUSHBLOCK(cx, CXt_EVAL, stack_sp); + PUSHEVAL(cx, 0, 0); + eval_root = op; /* Only needed so that goto works right. */ + + in_eval = 1; + if (flags & G_KEEPERR) + in_eval |= 4; + else + sv_setpv(GvSV(errgv),""); + } + markstack_ptr++; + + restart: + switch (Sigsetjmp(top_env,1)) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + FREETMPS; + Copy(oldtop, top_env, 1, Sigjmp_buf); + if (statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (restartop) { + op = restartop; + restartop = 0; + goto restart; + } + stack_sp = stack_base + oldmark; + if (flags & G_ARRAY) + retval = 0; + else { + retval = 1; + *++stack_sp = &sv_undef; + } + goto cleanup; + } + } + + if (op == (OP*)&myop) + op = pp_entersub(); + if (op) + runops(); + retval = stack_sp - (stack_base + oldmark); + if ((flags & G_EVAL) && !(flags & G_KEEPERR)) + sv_setpv(GvSV(errgv),""); + + cleanup: + if (flags & G_EVAL) { + if (scopestack_ix > oldscope) { + SV **newsp; + PMOP *newpm; + I32 gimme; + register CONTEXT *cx; + I32 optype; + + POPBLOCK(cx,newpm); + POPEVAL(cx); + pop_return(); + curpm = newpm; + LEAVE; + } + Copy(oldtop, top_env, 1, Sigjmp_buf); } + if (flags & G_DISCARD) { + stack_sp = stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; + } + return retval; +} + +/* Eval a string. The G_EVAL flag is always assumed. */ + +I32 +perl_eval_sv(sv, flags) +SV* sv; +I32 flags; /* See G_* flags in cop.h */ +{ + UNOP myop; /* fake syntax tree node */ + SV** sp = stack_sp; + I32 oldmark = sp - stack_base; + I32 retval; + Sigjmp_buf oldtop; + I32 oldscope; + + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } + + SAVESPTR(op); + op = (OP*)&myop; + Zero(op, 1, UNOP); + EXTEND(stack_sp, 1); + *++stack_sp = sv; + oldscope = scopestack_ix; + + if (!(flags & G_NOARGS)) + myop.op_flags = OPf_STACKED; myop.op_next = Nullop; + myop.op_type = OP_ENTEREVAL; + myop.op_flags |= OPf_KNOW; + if (flags & G_KEEPERR) + myop.op_flags |= OPf_SPECIAL; + if (flags & G_ARRAY) + myop.op_flags |= OPf_LIST; - if (op = pp_entersubr()) - run(); - FREE_TMPS(); - LEAVE; - return stack_sp - stack_base; + Copy(top_env, oldtop, 1, Sigjmp_buf); + +restart: + switch (Sigsetjmp(top_env,1)) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + FREETMPS; + Copy(oldtop, top_env, 1, Sigjmp_buf); + if (statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (restartop) { + op = restartop; + restartop = 0; + goto restart; + } + stack_sp = stack_base + oldmark; + if (flags & G_ARRAY) + retval = 0; + else { + retval = 1; + *++stack_sp = &sv_undef; + } + goto cleanup; + } + + if (op == (OP*)&myop) + op = pp_entereval(); + if (op) + runops(); + retval = stack_sp - (stack_base + oldmark); + if (!(flags & G_KEEPERR)) + sv_setpv(GvSV(errgv),""); + + cleanup: + Copy(oldtop, top_env, 1, Sigjmp_buf); + if (flags & G_DISCARD) { + stack_sp = stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; + } + return retval; +} + +/* Require a module. */ + +void +perl_require_pv(pv) +char* pv; +{ + SV* sv = sv_newmortal(); + sv_setpv(sv, "require '"); + sv_catpv(sv, pv); + sv_catpv(sv, "'"); + perl_eval_sv(sv, G_DISCARD); } void @@ -617,41 +1168,40 @@ I32 namlen; { register GV *gv; - if (gv = gv_fetchpv(sym,TRUE)) + if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); } -#ifdef DOSISH -#define PERLLIB_SEP ';' -#else -#define PERLLIB_SEP ':' -#endif - static void -incpush(p) -char *p; +usage(name) /* XXX move this out into a module ? */ +char *name; { - char *s; - - if (!p) - return; - - /* Break at all separators */ - while (*p) { - /* First, skip any consecutive separators */ - while ( *p == PERLLIB_SEP ) { - /* Uncomment the next line for PATH semantics */ - /* (void)av_push(GvAVn(incgv), newSVpv(".", 1)); */ - p++; - } - if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { - (void)av_push(GvAVn(incgv), newSVpv(p, (I32)(s - p))); - p = s + 1; - } else { - (void)av_push(GvAVn(incgv), newSVpv(p, 0)); - break; - } - } + /* This message really ought to be max 23 lines. + * Removed -h because the user already knows that opton. Others? */ + printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name); + printf("\n -0[octal] specify record separator (\\0, if no argument)"); + printf("\n -a autosplit mode with -n or -p (splits $_ into @F)"); + printf("\n -c check syntax only (runs BEGIN and END blocks)"); + printf("\n -d[:debugger] run scripts under debugger"); + printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)"); + printf("\n -e 'command' one line of script. Several -e's allowed. Omit [programfile]."); + printf("\n -F/pattern/ split() pattern for autosplit (-a). The //'s are optional."); + printf("\n -i[extension] edit <> files in place (make backup if extension supplied)"); + printf("\n -Idirectory specify @INC/#include directory (may be used more then once)"); + printf("\n -l[octal] enable line ending processing, specifies line teminator"); + printf("\n -[mM][-]module.. executes `use/no module...' before executing your script."); + printf("\n -n assume 'while (<>) { ... }' loop arround your script"); + printf("\n -p assume loop like -n but print line also like sed"); + printf("\n -P run script through C preprocessor before compilation"); + printf("\n -s enable some switch parsing for switches after script name"); + printf("\n -S look for the script using PATH environment variable"); + printf("\n -T turn on tainting checks"); + printf("\n -u dump core after parsing script"); + printf("\n -U allow unsafe operations"); + printf("\n -v print version number and patchlevel of perl"); + printf("\n -V[:variable] print perl configuration information"); + printf("\n -w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT."); + printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); } /* This routine handles any switches that can be given during run */ @@ -661,22 +1211,26 @@ moreswitches(s) char *s; { I32 numlen; + U32 rschar; switch (*s) { case '0': - nrschar = scan_oct(s, 4, &numlen); - nrs = nsavestr("\n",1); - *nrs = nrschar; - if (nrschar > 0377) { - nrslen = 0; - nrs = ""; - } - else if (!nrschar && numlen >= 2) { - nrslen = 2; - nrs = "\n\n"; - nrschar = '\n'; + rschar = scan_oct(s, 4, &numlen); + SvREFCNT_dec(nrs); + if (rschar & ~((U8)~0)) + nrs = &sv_undef; + else if (!rschar && numlen >= 2) + nrs = newSVpv("", 0); + else { + char ch = rschar; + nrs = newSVpv(&ch, 1); } return s + numlen; + case 'F': + minus_F = TRUE; + splitstr = savepv(s + 1); + s += strlen(s); + return s; case 'a': minus_a = TRUE; s++; @@ -686,13 +1240,21 @@ char *s; s++; return s; case 'd': - taint_not("-d"); - perldb = TRUE; + forbid_setid("-d"); s++; + if (*s == ':' || *s == '=') { + sprintf(buf, "use Devel::%s;", ++s); + s += strlen(s); + my_setenv("PERL5DB",buf); + } + if (!perldb) { + perldb = TRUE; + init_debugger(); + } return s; case 'D': #ifdef DEBUGGING - taint_not("-D"); + forbid_setid("-D"); if (isALPHA(s[1])) { static char debopts[] = "psltocPmfrxuLHXD"; char *d; @@ -707,22 +1269,31 @@ char *s; debug |= 0x80000000; #else warn("Recompile perl with -DDEBUGGING to use -D switch\n"); - for (s++; isDIGIT(*s); s++) ; + for (s++; isALNUM(*s); s++) ; #endif /*SUPPRESS 530*/ return s; + case 'h': + usage(origargv[0]); + exit(0); case 'i': if (inplace) Safefree(inplace); - inplace = savestr(s+1); + inplace = savepv(s+1); /*SUPPRESS 530*/ for (s = inplace; *s && !isSPACE(*s); s++) ; *s = '\0'; break; case 'I': - taint_not("-I"); + forbid_setid("-I"); if (*++s) { - (void)av_push(GvAVn(incgv),newSVpv(s,0)); + char *e, *p; + for (e = s; *e && !isSPACE(*e); e++) ; + p = savepvn(s, e-s); + incpush(p, TRUE); + Safefree(p); + if (*e) + return e; } else croak("No space allowed after -I"); @@ -730,17 +1301,59 @@ char *s; case 'l': minus_l = TRUE; s++; + if (ors) + Safefree(ors); if (isDIGIT(*s)) { - ors = savestr("\n"); + ors = savepv("\n"); orslen = 1; *ors = scan_oct(s, 3 + (*s == '0'), &numlen); s += numlen; } else { - ors = nsavestr(nrs,nrslen); - orslen = nrslen; + if (RsPARA(nrs)) { + ors = "\n\n"; + orslen = 2; + } + else + ors = SvPV(nrs, orslen); + ors = savepvn(ors, orslen); } return s; + case 'M': + forbid_setid("-M"); /* XXX ? */ + /* FALL THROUGH */ + case 'm': + forbid_setid("-m"); /* XXX ? */ + if (*++s) { + char *start; + char *use = "use "; + /* -M-foo == 'no foo' */ + if (*s == '-') { use = "no "; ++s; } + Sv = newSVpv(use,0); + start = s; + /* We allow -M'Module qw(Foo Bar)' */ + while(isALNUM(*s) || *s==':') ++s; + if (*s != '=') { + sv_catpv(Sv, start); + if (*(start-1) == 'm') { + if (*s != '\0') + croak("Can't use '%c' after -mname", *s); + sv_catpv( Sv, " ()"); + } + } else { + sv_catpvn(Sv, start, s-start); + sv_catpv(Sv, " split(/,/,q{"); + sv_catpv(Sv, ++s); + sv_catpv(Sv, "})"); + } + s += strlen(s); + if (preambleav == NULL) + preambleav = newAV(); + av_push(preambleav, Sv); + } + else + croak("No space allowed after -%c", *(s-1)); + return s; case 'n': minus_n = TRUE; s++; @@ -750,12 +1363,13 @@ char *s; s++; return s; case 's': - taint_not("-s"); + forbid_setid("-s"); doswitches = TRUE; s++; return s; case 'T': - tainting = TRUE; + if (!tainting) + croak("Too late for \"-T\" option (try putting it first)"); s++; return s; case 'u': @@ -767,41 +1381,50 @@ char *s; s++; return s; case 'v': - fputs("\nThis is perl, version 5.0, Alpha 6 (unsupported)\n\n",stdout); - fputs(rcsid,stdout); - fputs("\nCopyright (c) 1989, 1990, 1991, 1992, 1993, 1994 Larry Wall\n",stdout); +#if defined(SUBVERSION) && SUBVERSION > 0 + printf("\nThis is perl, version 5.%03d_%02d", PATCHLEVEL, SUBVERSION); +#else + printf("\nThis is perl, version %s",patchlevel); +#endif + + printf("\n\nCopyright 1987-1997, Larry Wall\n"); #ifdef MSDOS - fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", - stdout); -#ifdef OS2 - fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n", - stdout); + printf("\n\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); #endif +#ifdef DJGPP + printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"); +#endif +#ifdef OS2 + printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" + "Version 5 port Copyright (c) 1994-1996, Andreas Kaiser, Ilya Zakharevich\n"); #endif #ifdef atarist - fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout); + printf("atariST series port, ++jrb bammi@cadence.com\n"); #endif - fputs("\n\ + printf("\n\ Perl may be copied only under the terms of either the Artistic License or the\n\ -GNU General Public License, which may be found in the Perl 5.0 source kit.\n",stdout); -#ifdef MSDOS - usage(origargv[0]); -#endif +GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n"); exit(0); case 'w': dowarn = TRUE; s++; return s; + case '*': case ' ': if (s[1] == '-') /* Additional switches on #! line. */ return s+2; break; + case '-': case 0: case '\n': case '\t': break; + case 'P': + if (preprocess) + return s+1; + /* FALL THROUGH */ default: - croak("Switch meaningless after -x: -%s",s); + croak("Can't emulate -%.1s on #! line",s); } return Nullch; } @@ -822,40 +1445,90 @@ my_unexec() status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); if (status) - fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); - my_exit(status); + PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n", tokenbuf, buf); + exit(status); +#else +# ifdef VMS +# include + lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ #else ABORT(); /* for use with undump */ #endif +#endif } static void init_main_stash() { GV *gv; + + /* Note that strtab is a rather special HV. Assumptions are made + about not iterating on it, and not adding tie magic to it. + It is properly deallocated in perl_destruct() */ + strtab = newHV(); + HvSHAREKEYS_off(strtab); /* mandatory */ + Newz(506,((XPVHV*)SvANY(strtab))->xhv_array, + sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char); + curstash = defstash = newHV(); curstname = newSVpv("main",4); - GvHV(gv = gv_fetchpv("_main",TRUE)) = (HV*)SvREFCNT_inc(defstash); + gv = gv_fetchpv("main::",TRUE, SVt_PVHV); + SvREFCNT_dec(GvHV(gv)); + GvHV(gv) = (HV*)SvREFCNT_inc(defstash); SvREADONLY_on(gv); - HvNAME(defstash) = "main"; - incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE))); - SvMULTI_on(incgv); - defgv = gv_fetchpv("_",TRUE); + HvNAME(defstash) = savepv("main"); + incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); + GvMULTI_on(incgv); + defgv = gv_fetchpv("_",TRUE, SVt_PVAV); + errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); + GvMULTI_on(errgv); + sv_setpvn(GvSV(errgv), "", 0); curstash = defstash; compiling.cop_stash = defstash; + debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); + /* We must init $/ before switches are processed. */ + sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); } +#ifdef CAN_PROTOTYPE +static void +open_script(char *scriptname, bool dosearch, SV *sv) +#else static void open_script(scriptname,dosearch,sv) char *scriptname; bool dosearch; SV *sv; +#endif { char *xfound = Nullch; char *xfailed = Nullch; register char *s; I32 len; + int retval; +#if defined(DOSISH) && !defined(OS2) && !defined(atarist) +#define SEARCH_EXTS ".bat", ".cmd", NULL +#endif +#ifdef VMS +# define SEARCH_EXTS ".pl", ".com", NULL +#endif + /* additional extensions to try in each dir if scriptname not found */ +#ifdef SEARCH_EXTS + char *ext[] = { SEARCH_EXTS }; + int extidx = (strchr(scriptname,'.')) ? -1 : 0; /* has ext already */ +#endif +#ifdef VMS + if (dosearch) { + int hasdir, idx = 0, deftypes = 1; + + hasdir = (strpbrk(scriptname,":[ 0) /* reset after previous loop */ + extidx = 0; + do { +#endif + DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf)); + retval = Stat(tokenbuf,&statbuf); +#ifdef SEARCH_EXTS + } while ( retval < 0 /* not there */ + && extidx>=0 && ext[extidx] /* try an extension? */ + && strcpy(tokenbuf+len, ext[extidx++]) + ); +#endif + if (retval < 0) continue; if (S_ISREG(statbuf.st_mode) && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { @@ -893,7 +1581,7 @@ SV *sv; break; } if (!xfailed) - xfailed = savestr(tokenbuf); + xfailed = savepv(tokenbuf); } if (!xfound) croak("Can't execute %s", xfailed ? xfailed : scriptname ); @@ -902,11 +1590,28 @@ SV *sv; scriptname = xfound; } - origfilename = savestr(e_fp ? "-e" : scriptname); + if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { + char *s = scriptname + 8; + fdscript = atoi(s); + while (isDIGIT(*s)) + s++; + if (*s) + scriptname = s + 1; + } + else + fdscript = -1; + origfilename = savepv(e_tmpname ? "-e" : scriptname); curcop->cop_filegv = gv_fetchfile(origfilename); if (strEQ(origfilename,"-")) scriptname = ""; - if (preprocess) { + if (fdscript >= 0) { + rsfp = PerlIO_fdopen(fdscript,"r"); +#if defined(HAS_FCNTL) && defined(F_SETFD) + if (rsfp) + fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ +#endif + } + else if (preprocess) { char *cpp = CPPSTDIN; if (strEQ(cpp,"cppstdin")) @@ -914,7 +1619,7 @@ SV *sv; else sprintf(tokenbuf, "%s", cpp); sv_catpv(sv,"-I"); - sv_catpv(sv,PRIVLIB); + sv_catpv(sv,PRIVLIB_EXP); #ifdef MSDOS (void)sprintf(buf, "\ sed %s -e \"/^[^#]/b\" \ @@ -952,7 +1657,6 @@ sed %s -e \"/^[^#]/b\" \ (doextract ? "-e '1,/^#/d\n'" : ""), #endif scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); - DEBUG_P(fprintf(stderr, "%s\n", buf)); doextract = FALSE; #ifdef IAMSUID /* actually, this is caught earlier */ if (euid != uid && !euid) { /* if running suidperl */ @@ -960,11 +1664,15 @@ sed %s -e \"/^[^#]/b\" \ (void)seteuid(uid); /* musn't stay setuid root */ #else #ifdef HAS_SETREUID - (void)setreuid(-1, uid); + (void)setreuid((Uid_t)-1, uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); #else setuid(uid); #endif #endif +#endif if (geteuid() != uid) croak("Can't do seteuid!\n"); } @@ -972,15 +1680,23 @@ sed %s -e \"/^[^#]/b\" \ rsfp = my_popen(buf,"r"); } else if (!*scriptname) { - taint_not("program input from stdin"); - rsfp = stdin; + forbid_setid("program input from stdin"); + rsfp = PerlIO_stdin(); } - else - rsfp = fopen(scriptname,"r"); - if ((FILE*)rsfp == Nullfp) { + else { + rsfp = PerlIO_open(scriptname,"r"); +#if defined(HAS_FCNTL) && defined(F_SETFD) + if (rsfp) + fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ +#endif + } + if (e_tmpname) { + e_fp = rsfp; + } + if (!rsfp) { #ifdef DOSUID #ifndef IAMSUID /* in case script is not readable before setuid */ - if (euid && stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && + if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); execv(buf, origargv); /* try again */ @@ -989,15 +1705,17 @@ sed %s -e \"/^[^#]/b\" \ #endif #endif croak("Can't open perl script \"%s\": %s\n", - SvPVX(GvSV(curcop->cop_filegv)), strerror(errno)); + SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); } } static void -validate_suid(validarg) +validate_suid(validarg, scriptname) char *validarg; +char *scriptname; { - char *s; + int which; + /* do we need to emulate setuid on scripts? */ /* This code is for those BSD systems that have setuid #! scripts disabled @@ -1019,9 +1737,11 @@ char *validarg; */ #ifdef DOSUID - if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ + char *s, *s2; + + if (Fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ croak("Can't stat script \"%s\"",origfilename); - if (statbuf.st_mode & (S_ISUID|S_ISGID)) { + if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { I32 len; #ifdef IAMSUID @@ -1045,15 +1765,23 @@ char *validarg; { struct stat tmpstatbuf; - if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) + if ( +#ifdef HAS_SETREUID + setreuid(euid,uid) < 0 +#else +# if HAS_SETRESUID + setresuid(euid,uid,(Uid_t)-1) < 0 +# endif +#endif + || getuid() != euid || geteuid() != uid) croak("Can't swap uid and euid"); /* really paranoid */ - if (stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) + if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) croak("Permission denied"); /* testing full pathname here */ if (tmpstatbuf.st_dev != statbuf.st_dev || tmpstatbuf.st_ino != statbuf.st_ino) { - (void)fclose(rsfp); + (void)PerlIO_close(rsfp); if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ - fprintf(rsfp, + PerlIO_printf(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, @@ -1064,7 +1792,15 @@ char *validarg; } croak("Permission denied\n"); } - if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) + if ( +#ifdef HAS_SETREUID + setreuid(uid,euid) < 0 +#else +# if defined(HAS_SETRESUID) + setresuid(uid,euid,(Uid_t)-1) < 0 +# endif +#endif + || getuid() != uid || geteuid() != euid) croak("Can't reswap uid and euid"); if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ croak("Permission denied\n"); @@ -1078,13 +1814,15 @@ char *validarg; croak("Setuid/gid script is writable by world"); doswitches = FALSE; /* -s is insecure in suid */ curcop->cop_line++; - if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || - strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ + if (sv_gets(linestr, rsfp, 0) == Nullch || + strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */ croak("No #! line"); - s = tokenbuf+2; + s = SvPV(linestr,na)+2; if (*s == ' ') s++; while (!isSPACE(*s)) s++; - if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ + for (s2 = s; (s2 > SvPV(linestr,na)+2 && + (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; + if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ croak("Not a perl script"); while (*s == ' ' || *s == '\t') s++; /* @@ -1106,7 +1844,7 @@ 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); + (void)PerlIO_close(rsfp); #ifndef IAMSUID (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); execv(buf, origargv); /* try again */ @@ -1119,11 +1857,15 @@ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); (void)setegid(statbuf.st_gid); #else #ifdef HAS_SETREGID - (void)setregid((GIDTYPE)-1,statbuf.st_gid); + (void)setregid((Gid_t)-1,statbuf.st_gid); +#else +#ifdef HAS_SETRESGID + (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); #else setgid(statbuf.st_gid); #endif #endif +#endif if (getegid() != statbuf.st_gid) croak("Can't do setegid!\n"); } @@ -1133,45 +1875,70 @@ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); (void)seteuid(statbuf.st_uid); /* all that for this */ #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,statbuf.st_uid); + (void)setreuid((Uid_t)-1,statbuf.st_uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); #else setuid(statbuf.st_uid); #endif #endif +#endif if (geteuid() != statbuf.st_uid) croak("Can't do seteuid!\n"); } else if (uid) { /* oops, mustn't run as root */ #ifdef HAS_SETEUID - (void)seteuid((UIDTYPE)uid); + (void)seteuid((Uid_t)uid); #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); + (void)setreuid((Uid_t)-1,(Uid_t)uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); #else - setuid((UIDTYPE)uid); + setuid((Uid_t)uid); +#endif #endif #endif if (geteuid() != uid) croak("Can't do seteuid!\n"); } - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); - tainting |= (euid != uid || egid != gid); + init_ids(); if (!cando(S_IXUSR,TRUE,&statbuf)) croak("Permission denied\n"); /* they can't do this */ } #ifdef IAMSUID else if (preprocess) croak("-P not allowed for setuid/setgid script\n"); + else if (fdscript >= 0) + croak("fd script not allowed in suidperl\n"); else croak("Script is not setuid/setgid in suidperl\n"); + + /* We absolutely must clear out any saved ids here, so we */ + /* exec the real perl, substituting fd script for scriptname. */ + /* (We pass script name as "subdir" of fd, which perl will grok.) */ + PerlIO_rewind(rsfp); + lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */ + for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ; + if (!origargv[which]) + croak("Permission denied"); + (void)sprintf(buf, "/dev/fd/%d/%.127s", PerlIO_fileno(rsfp), origargv[which]); + origargv[which] = buf; + +#if defined(HAS_FCNTL) && defined(F_SETFD) + fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */ +#endif + + (void)sprintf(tokenbuf, "%s/perl%s", BIN, patchlevel); + execv(tokenbuf, origargv); /* try again */ + croak("Can't do setuid\n"); #endif /* IAMSUID */ #else /* !DOSUID */ 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 */ + Fstat(PerlIO_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) @@ -1188,21 +1955,25 @@ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); static void find_beginning() { - register char *s; + register char *s, *s2; /* skip forward in input to the real script? */ - taint_not("-x"); + forbid_setid("-x"); while (doextract) { if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) croak("No Perl script found in input\n"); - if (*s == '#' && s[1] == '!' && instr(s,"perl")) { - ungetc('\n',rsfp); /* to keep line count right */ + if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { + PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */ doextract = FALSE; - if (s = instr(s,"perl -")) { - s += 6; - /*SUPPRESS 530*/ - while (s = moreswitches(s)) ; + while (*s && !(isSPACE (*s) || *s == '#')) s++; + s2 = s; + while (*s == ' ' || *s == '\t') s++; + if (*s++ == '-') { + while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; + if (strnEQ(s2-4,"perl",4)) + /*SUPPRESS 530*/ + while (s = moreswitches(s)) ; } if (cddir && chdir(cddir) < 0) croak("Can't chdir to %s",cddir); @@ -1211,62 +1982,62 @@ find_beginning() } static void -init_debugger() +init_ids() { - GV* tmpgv; + uid = (int)getuid(); + euid = (int)geteuid(); + gid = (int)getgid(); + egid = (int)getegid(); +#ifdef VMS + uid |= gid << 16; + euid |= egid << 16; +#endif + tainting |= (uid && (euid != uid || egid != gid)); +} - debstash = newHV(); - GvHV(gv_fetchpv("::_DB",TRUE)) = debstash; +static void +forbid_setid(s) +char *s; +{ + if (euid != uid) + croak("No %s allowed while running setuid", s); + if (egid != gid) + croak("No %s allowed while running setgid", s); +} + +static void +init_debugger() +{ curstash = debstash; - dbargs = GvAV(gv_AVadd((tmpgv = gv_fetchpv("args",TRUE)))); - SvMULTI_on(tmpgv); + dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); AvREAL_off(dbargs); - DBgv = gv_fetchpv("DB",TRUE); - SvMULTI_on(DBgv); - DBline = gv_fetchpv("dbline",TRUE); - SvMULTI_on(DBline); - DBsub = gv_HVadd(tmpgv = gv_fetchpv("sub",TRUE)); - SvMULTI_on(tmpgv); - DBsingle = GvSV((tmpgv = gv_fetchpv("single",TRUE))); - SvMULTI_on(tmpgv); - DBtrace = GvSV((tmpgv = gv_fetchpv("trace",TRUE))); - SvMULTI_on(tmpgv); - DBsignal = GvSV((tmpgv = gv_fetchpv("signal",TRUE))); - SvMULTI_on(tmpgv); + DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); + DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); + DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); + DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); + sv_setiv(DBsingle, 0); + DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); + sv_setiv(DBtrace, 0); + DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); + sv_setiv(DBsignal, 0); curstash = defstash; } static void init_stacks() { - stack = newAV(); - mainstack = stack; /* remember in case we switch stacks */ - AvREAL_off(stack); /* not a real array */ - av_fill(stack,127); av_fill(stack,-1); /* preextend stack */ + curstack = newAV(); + mainstack = curstack; /* remember in case we switch stacks */ + AvREAL_off(curstack); /* not a real array */ + av_extend(curstack,127); - stack_base = AvARRAY(stack); + stack_base = AvARRAY(curstack); stack_sp = stack_base; stack_max = stack_base + 127; - New(54,markstack,64,int); - markstack_ptr = markstack; - markstack_max = markstack + 64; - - New(54,scopestack,32,int); - scopestack_ix = 0; - scopestack_max = 32; - - New(54,savestack,128,ANY); - savestack_ix = 0; - savestack_max = 128; - - New(54,retstack,16,OP*); - retstack_ix = 0; - retstack_max = 16; - - New(50,cxstack,128,CONTEXT); + cxstack_max = 8192 / sizeof(CONTEXT) - 2; /* Use most of 8K. */ + New(50,cxstack,cxstack_max + 1,CONTEXT); cxstack_ix = -1; - cxstack_max = 128; New(50,tmps_stack,128,SV*); tmps_ix = -1; @@ -1276,13 +2047,62 @@ init_stacks() New(51,debname,128,char); New(52,debdelim,128,char); } ) + + /* + * The following stacks almost certainly should be per-interpreter, + * but for now they're not. XXX + */ + + if (markstack) { + markstack_ptr = markstack; + } else { + New(54,markstack,64,I32); + markstack_ptr = markstack; + markstack_max = markstack + 64; + } + + if (scopestack) { + scopestack_ix = 0; + } else { + New(54,scopestack,32,I32); + scopestack_ix = 0; + scopestack_max = 32; + } + + if (savestack) { + savestack_ix = 0; + } else { + New(54,savestack,128,ANY); + savestack_ix = 0; + savestack_max = 128; + } + + if (retstack) { + retstack_ix = 0; + } else { + New(54,retstack,16,OP*); + retstack_ix = 0; + retstack_max = 16; + } } static void -init_lexer() +nuke_stacks() { - FILE* tmpfp = rsfp; + Safefree(cxstack); + Safefree(tmps_stack); + DEBUG( { + Safefree(debname); + Safefree(debdelim); + } ) +} + +static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ +static void +init_lexer() +{ + tmpfp = rsfp; lex_start(linestr); rsfp = tmpfp; subname = newSVpv("main",4); @@ -1292,39 +2112,36 @@ static void init_predump_symbols() { GV *tmpgv; - - sv_setpvn(GvSV(gv_fetchpv("\"", TRUE)), " ", 1); - - stdingv = gv_fetchpv("STDIN",TRUE); - SvMULTI_on(stdingv); - if (!GvIO(stdingv)) - GvIO(stdingv) = newIO(); - IoIFP(GvIO(stdingv)) = stdin; - tmpgv = gv_fetchpv("stdin",TRUE); - GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(stdingv)); - SvMULTI_on(tmpgv); - - tmpgv = gv_fetchpv("STDOUT",TRUE); - SvMULTI_on(tmpgv); - if (!GvIO(tmpgv)) - GvIO(tmpgv) = newIO(); - IoOFP(GvIO(tmpgv)) = IoIFP(GvIO(tmpgv)) = stdout; - defoutgv = tmpgv; - tmpgv = gv_fetchpv("stdout",TRUE); - GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(defoutgv)); - SvMULTI_on(tmpgv); - - curoutgv = gv_fetchpv("STDERR",TRUE); - SvMULTI_on(curoutgv); - if (!GvIO(curoutgv)) - GvIO(curoutgv) = newIO(); - IoOFP(GvIO(curoutgv)) = IoIFP(GvIO(curoutgv)) = stderr; - tmpgv = gv_fetchpv("stderr",TRUE); - GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(curoutgv)); - SvMULTI_on(tmpgv); - curoutgv = defoutgv; /* switch back to STDOUT */ + GV *othergv; + + sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); + + stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); + GvMULTI_on(stdingv); + IoIFP(GvIOp(stdingv)) = PerlIO_stdin(); + tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); + + tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); + GvMULTI_on(tmpgv); + IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout(); + setdefout(tmpgv); + tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); + + othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); + GvMULTI_on(othergv); + IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr(); + tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); statname = NEWSV(66,0); /* last filename we did stat on */ + + if (!osname) + osname = savepv(OSNAME); } static void @@ -1348,10 +2165,10 @@ register char **env; } if (s = strchr(argv[0], '=')) { *s++ = '\0'; - sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE)),s); + sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); } else - sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE)),1); + sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); } } toptarget = NEWSV(0,0); @@ -1362,28 +2179,34 @@ register char **env; sv_setpvn(bodytarget, "", 0); formtarget = bodytarget; - tainted = 1; - if (tmpgv = gv_fetchpv("0",TRUE)) { + TAINT; + if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { sv_setpv(GvSV(tmpgv),origfilename); magicname("0", "0", 1); } - if (tmpgv = gv_fetchpv("\024",TRUE)) - time(&basetime); - if (tmpgv = gv_fetchpv("\030",TRUE)) + if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) sv_setpv(GvSV(tmpgv),origargv[0]); - if (argvgv = gv_fetchpv("ARGV",TRUE)) { - SvMULTI_on(argvgv); + if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { + GvMULTI_on(argvgv); (void)gv_AVadd(argvgv); av_clear(GvAVn(argvgv)); for (; argc > 0; argc--,argv++) { - (void)av_push(GvAVn(argvgv),newSVpv(argv[0],0)); + av_push(GvAVn(argvgv),newSVpv(argv[0],0)); } } - if (envgv = gv_fetchpv("ENV",TRUE)) { + if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { HV *hv; - SvMULTI_on(envgv); + GvMULTI_on(envgv); hv = GvHVn(envgv); hv_clear(hv); +#ifndef VMS /* VMS doesn't have environ array */ + /* Note that if the supplied env parameter is actually a copy + of the global environ then it may now point to free'd memory + if the environment has been modified since. To avoid this + problem we treat env==NULL as meaning 'use the default' + */ + if (!env) + env = environ; if (env != environ) { environ[0] = Nullch; hv_magic(hv, envgv, 'E'); @@ -1393,56 +2216,294 @@ register char **env; continue; *s++ = '\0'; sv = newSVpv(s--,0); + sv_magic(sv, sv, 'e', *env, s - *env); (void)hv_store(hv, *env, s - *env, sv, 0); *s = '='; } +#endif +#ifdef DYNAMIC_ENV_FETCH + HvNAME(hv) = savepv(ENV_HV_NAME); +#endif hv_magic(hv, envgv, 'E'); } - tainted = 0; - if (tmpgv = gv_fetchpv("$",TRUE)) + TAINT_NOT; + if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) sv_setiv(GvSV(tmpgv),(I32)getpid()); - } static void init_perllib() { + char *s; + if (!tainting) { +#ifndef VMS + s = getenv("PERL5LIB"); + if (s) + incpush(s, TRUE); + else + incpush(getenv("PERLLIB"), FALSE); +#else /* VMS */ + /* Treat PERL5?LIB as a possible search list logical name -- the + * "natural" VMS idiom for a Unix path string. We allow each + * element to be a set of |-separated directories for compatibility. + */ + char buf[256]; + int idx = 0; + if (my_trnlnm("PERL5LIB",buf,0)) + do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); + else + while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE); +#endif /* VMS */ + } + +/* Use the ~-expanded versions of APPLIB (undocumented), + ARCHLIB PRIVLIB SITEARCH SITELIB and OLDARCHLIB +*/ +#ifdef APPLLIB_EXP + incpush(APPLLIB_EXP, FALSE); +#endif + +#ifdef ARCHLIB_EXP + incpush(ARCHLIB_EXP, FALSE); +#endif +#ifndef PRIVLIB_EXP +#define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" +#endif + incpush(PRIVLIB_EXP, FALSE); + +#ifdef SITEARCH_EXP + incpush(SITEARCH_EXP, FALSE); +#endif +#ifdef SITELIB_EXP + incpush(SITELIB_EXP, FALSE); +#endif +#ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ + incpush(OLDARCHLIB_EXP, FALSE); +#endif + if (!tainting) - incpush(getenv("PERLLIB")); + incpush(".", FALSE); +} -#ifndef PRIVLIB -#define PRIVLIB "/usr/local/lib/perl" +#if defined(DOSISH) +# define PERLLIB_SEP ';' +#else +# if defined(VMS) +# define PERLLIB_SEP '|' +# else +# define PERLLIB_SEP ':' +# endif #endif - incpush(PRIVLIB); - (void)av_push(GvAVn(incgv),newSVpv(".",1)); +#ifndef PERLLIB_MANGLE +# define PERLLIB_MANGLE(s,n) (s) +#endif + +static void +incpush(p, addsubdirs) +char *p; +int addsubdirs; +{ + SV *subdir = Nullsv; + static char *archpat_auto; + + if (!p) + return; + + if (addsubdirs) { + subdir = newSV(0); + if (!archpat_auto) { + STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel) + + sizeof("//auto")); + New(55, archpat_auto, len, char); + sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel); + } + } + + /* Break at all separators */ + while (p && *p) { + SV *libdir = newSV(0); + char *s; + + /* skip any consecutive separators */ + while ( *p == PERLLIB_SEP ) { + /* Uncomment the next line for PATH semantics */ + /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ + p++; + } + + if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { + sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), + (STRLEN)(s - p)); + p = s + 1; + } + else { + sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); + p = Nullch; /* break out */ + } + + /* + * BEFORE pushing libdir onto @INC we may first push version- and + * archname-specific sub-directories. + */ + if (addsubdirs) { + struct stat tmpstatbuf; + + /* .../archname/version if -d .../archname/auto */ + sv_setsv(subdir, libdir); + sv_catpv(subdir, archpat_auto); + if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); + + /* .../archname/version if -d .../archname/version/auto */ + sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME), + strlen(patchlevel) + 1, "", 0); + if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); + } + + /* finally push this lib directory on the end of @INC */ + av_push(GvAVn(incgv), libdir); + } + + SvREFCNT_dec(subdir); } void calllist(list) AV* list; { - jmp_buf oldtop; - I32 sp = stack_sp - stack_base; + Sigjmp_buf oldtop; + STRLEN len; + line_t oldline = curcop->cop_line; - av_store(stack, ++sp, Nullsv); /* reserve spot for sub reference */ - Copy(top_env, oldtop, 1, jmp_buf); + Copy(top_env, oldtop, 1, Sigjmp_buf); while (AvFILL(list) >= 0) { CV *cv = (CV*)av_shift(list); SAVEFREESV(cv); - if (setjmp(top_env)) { - if (list == beginav) { - warn("BEGIN failed--execution aborted"); - Copy(oldtop, top_env, 1, jmp_buf); - my_exit(1); + + switch (Sigsetjmp(top_env,1)) { + case 0: { + SV* atsv = GvSV(errgv); + PUSHMARK(stack_sp); + perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); + (void)SvPV(atsv, len); + if (len) { + Copy(oldtop, top_env, 1, Sigjmp_buf); + curcop = &compiling; + curcop->cop_line = oldline; + if (list == beginav) + sv_catpv(atsv, "BEGIN failed--compilation aborted"); + else + sv_catpv(atsv, "END failed--cleanup aborted"); + croak("%s", SvPVX(atsv)); + } } + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + if (endav) + calllist(endav); + FREETMPS; + Copy(oldtop, top_env, 1, Sigjmp_buf); + curcop = &compiling; + curcop->cop_line = oldline; + if (statusvalue) { + if (list == beginav) + croak("BEGIN failed--compilation aborted"); + else + croak("END failed--cleanup aborted"); + } + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (!restartop) { + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; + break; + } + Copy(oldtop, top_env, 1, Sigjmp_buf); + curcop = &compiling; + curcop->cop_line = oldline; + Siglongjmp(top_env, 3); } - else { - perl_callsv((SV*)cv, sp, G_SCALAR, 0, 0); - } } - Copy(oldtop, top_env, 1, jmp_buf); + Copy(oldtop, top_env, 1, Sigjmp_buf); +} + +void +my_exit(status) +U32 status; +{ + switch (status) { + case 0: + STATUS_ALL_SUCCESS; + break; + case 1: + STATUS_ALL_FAILURE; + break; + default: + STATUS_NATIVE_SET(status); + break; + } + my_exit_jump(); +} + +void +my_failure_exit() +{ +#ifdef VMS + if (vaxc$errno & 1) { + if (GETSTATUS_NATIVE & 1) /* fortuitiously includes "-1" */ + SETSTATUS_NATIVE(44); + } + else { + if (!vaxc$errno && errno) /* someone must have set $^E = 0 */ + SETSTATUS_NATIVE(44); + else + SETSTATUS_NATIVE(vaxc$errno); + } +#else + if (errno & 255) + STATUS_POSIX_SET(errno); + else if (STATUS_POSIX == 0) + STATUS_POSIX_SET(255); +#endif + my_exit_jump(); } +static void +my_exit_jump() +{ + register CONTEXT *cx; + I32 gimme; + SV **newsp; + + if (e_tmpname) { + if (e_fp) { + PerlIO_close(e_fp); + e_fp = Nullfp; + } + (void)UNLINK(e_tmpname); + Safefree(e_tmpname); + e_tmpname = Nullch; + } + + if (cxstack_ix >= 0) { + if (cxstack_ix > 0) + dounwind(0); + POPBLOCK(cx,curpm); + LEAVE; + } + Siglongjmp(top_env, 2); +}