3 * Copyright (c) 1987-1998 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
16 #include "patchlevel.h"
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
23 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
24 char *getenv _((char *)); /* Usually in <stdlib.h> */
34 dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n";
42 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
52 curcop = &compiling; \
59 laststype = OP_STAT; \
61 maxsysfd = MAXSYSFD; \
68 laststype = OP_STAT; \
73 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
75 static void find_beginning _((void));
76 static void forbid_setid _((char *));
77 static void incpush _((char *, int));
78 static void init_ids _((void));
79 static void init_debugger _((void));
80 static void init_lexer _((void));
81 static void init_main_stash _((void));
83 static struct perl_thread * init_main_thread _((void));
84 #endif /* USE_THREADS */
85 static void init_perllib _((void));
86 static void init_postdump_symbols _((int, char **, char **));
87 static void init_predump_symbols _((void));
88 static void my_exit_jump _((void)) __attribute__((noreturn));
89 static void nuke_stacks _((void));
90 static void open_script _((char *, bool, SV *, int *fd));
91 static void usage _((char *));
92 static void validate_suid _((char *, char*, int));
93 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
97 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
98 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
100 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
110 PerlInterpreter *sv_interp;
113 New(53, sv_interp, 1, PerlInterpreter);
116 #endif /* PERL_OBJECT */
120 CPerlObj::perl_construct(void)
122 perl_construct(register PerlInterpreter *sv_interp)
128 struct perl_thread *thr;
129 #endif /* FAKE_THREADS */
130 #endif /* USE_THREADS */
133 if (!(curinterp = sv_interp))
138 Zero(sv_interp, 1, PerlInterpreter);
141 /* Init the real globals (and main thread)? */
146 #ifdef ALLOC_THREAD_KEY
149 if (pthread_key_create(&thr_key, 0))
150 croak("panic: pthread_key_create");
152 MUTEX_INIT(&sv_mutex);
154 * Safe to use basic SV functions from now on (though
155 * not things like mortals or tainting yet).
157 MUTEX_INIT(&eval_mutex);
158 COND_INIT(&eval_cond);
159 MUTEX_INIT(&threads_mutex);
160 COND_INIT(&nthreads_cond);
161 #ifdef EMULATE_ATOMIC_REFCOUNTS
162 MUTEX_INIT(&svref_mutex);
163 #endif /* EMULATE_ATOMIC_REFCOUNTS */
165 thr = init_main_thread();
166 #endif /* USE_THREADS */
168 linestr = NEWSV(65,80);
169 sv_upgrade(linestr,SVt_PVIV);
171 if (!SvREADONLY(&sv_undef)) {
172 SvREADONLY_on(&sv_undef);
176 SvREADONLY_on(&sv_no);
178 sv_setpv(&sv_yes,Yes);
180 SvREADONLY_on(&sv_yes);
183 nrs = newSVpv("\n", 1);
184 rs = SvREFCNT_inc(nrs);
188 /* sighandlerp = sighandler; */
190 sighandlerp = sighandler;
196 * There is no way we can refer to them from Perl so close them to save
197 * space. The other alternative would be to provide STDAUX and STDPRN
200 (void)fclose(stdaux);
201 (void)fclose(stdprn);
208 perl_destruct_level = 1;
210 if(perl_destruct_level > 0)
215 lex_state = LEX_NOTPARSING;
217 start_env.je_prev = NULL;
218 start_env.je_ret = -1;
219 start_env.je_mustcatch = TRUE;
220 top_env = &start_env;
223 SET_NUMERIC_STANDARD();
224 #if defined(SUBVERSION) && SUBVERSION > 0
225 sprintf(patchlevel, "%7.5f", (double) 5
226 + ((double) PATCHLEVEL / (double) 1000)
227 + ((double) SUBVERSION / (double) 100000));
229 sprintf(patchlevel, "%5.3f", (double) 5 +
230 ((double) PATCHLEVEL / (double) 1000));
233 #if defined(LOCAL_PATCH_COUNT)
234 localpatches = local_patches; /* For possible -v */
237 PerlIO_init(); /* Hook to IO system */
239 fdpid = newAV(); /* for remembering popen pids by fd */
240 modglobal = newHV(); /* pointers to per-interpreter module globals */
243 New(51,debname,128,char);
244 New(52,debdelim,128,char);
252 CPerlObj::perl_destruct(void)
254 perl_destruct(register PerlInterpreter *sv_interp)
258 int destruct_level; /* 0=none, 1=full, 2=full with checks */
263 #endif /* USE_THREADS */
266 if (!(curinterp = sv_interp))
272 /* Pass 1 on any remaining threads: detach joinables, join zombies */
274 MUTEX_LOCK(&threads_mutex);
275 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
276 "perl_destruct: waiting for %d threads...\n",
278 for (t = thr->next; t != thr; t = t->next) {
279 MUTEX_LOCK(&t->mutex);
280 switch (ThrSTATE(t)) {
283 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
284 "perl_destruct: joining zombie %p\n", t));
285 ThrSETSTATE(t, THRf_DEAD);
286 MUTEX_UNLOCK(&t->mutex);
289 * The SvREFCNT_dec below may take a long time (e.g. av
290 * may contain an object scalar whose destructor gets
291 * called) so we have to unlock threads_mutex and start
294 MUTEX_UNLOCK(&threads_mutex);
296 SvREFCNT_dec((SV*)av);
297 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
298 "perl_destruct: joined zombie %p OK\n", t));
300 case THRf_R_JOINABLE:
301 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
302 "perl_destruct: detaching thread %p\n", t));
303 ThrSETSTATE(t, THRf_R_DETACHED);
305 * We unlock threads_mutex and t->mutex in the opposite order
306 * from which we locked them just so that DETACH won't
307 * deadlock if it panics. It's only a breach of good style
308 * not a bug since they are unlocks not locks.
310 MUTEX_UNLOCK(&threads_mutex);
312 MUTEX_UNLOCK(&t->mutex);
315 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
316 "perl_destruct: ignoring %p (state %u)\n",
318 MUTEX_UNLOCK(&t->mutex);
319 /* fall through and out */
322 /* We leave the above "Pass 1" loop with threads_mutex still locked */
324 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
327 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
328 "perl_destruct: final wait for %d threads\n",
330 COND_WAIT(&nthreads_cond, &threads_mutex);
332 /* At this point, we're the last thread */
333 MUTEX_UNLOCK(&threads_mutex);
334 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
335 MUTEX_DESTROY(&threads_mutex);
336 COND_DESTROY(&nthreads_cond);
337 #endif /* !defined(FAKE_THREADS) */
338 #endif /* USE_THREADS */
340 destruct_level = perl_destruct_level;
344 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
346 if (destruct_level < i)
355 /* We must account for everything. */
357 /* Destroy the main CV and syntax tree */
359 curpad = AvARRAY(comppad);
365 SvREFCNT_dec(main_cv);
370 * Try to destruct global references. We do this first so that the
371 * destructors and destructees still exist. Some sv's might remain.
372 * Non-referenced objects are on their own.
379 /* unhook hooks which will soon be, or use, destroyed data */
380 SvREFCNT_dec(warnhook);
382 SvREFCNT_dec(diehook);
384 SvREFCNT_dec(parsehook);
387 /* call exit list functions */
388 while (exitlistlen-- > 0)
389 exitlist[exitlistlen].fn(PERL_OBJECT_THIS_ exitlist[exitlistlen].ptr);
393 if (destruct_level == 0){
395 DEBUG_P(debprofdump());
397 /* The exit() function will do everything that needs doing. */
401 /* loosen bonds of global variables */
404 (void)PerlIO_close(rsfp);
408 /* Filters for program text */
409 SvREFCNT_dec(rsfp_filters);
410 rsfp_filters = Nullav;
422 sawampersand = FALSE; /* must save all match strings */
423 sawstudy = FALSE; /* do fbm_instr on all strings */
431 SvREFCNT_dec(e_script);
435 /* magical thingies */
437 Safefree(ofs); /* $, */
440 Safefree(ors); /* $\ */
443 SvREFCNT_dec(nrs); /* $\ helper */
446 multiline = 0; /* $* */
448 SvREFCNT_dec(statname);
452 /* defgv, aka *_ should be taken care of elsewhere */
454 /* clean up after study() */
455 SvREFCNT_dec(lastscream);
457 Safefree(screamfirst);
459 Safefree(screamnext);
462 /* startup and shutdown function lists */
463 SvREFCNT_dec(beginav);
465 SvREFCNT_dec(initav);
470 /* shortcuts just get cleared */
481 /* reset so print() ends up where we expect */
484 /* Prepare to destruct main symbol table. */
491 if (destruct_level >= 2) {
492 if (scopestack_ix != 0)
493 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
494 (long)scopestack_ix);
495 if (savestack_ix != 0)
496 warn("Unbalanced saves: %ld more saves than restores\n",
498 if (tmps_floor != -1)
499 warn("Unbalanced tmps: %ld more allocs than frees\n",
500 (long)tmps_floor + 1);
501 if (cxstack_ix != -1)
502 warn("Unbalanced context: %ld more PUSHes than POPs\n",
503 (long)cxstack_ix + 1);
506 /* Now absolutely destruct everything, somehow or other, loops or no. */
508 SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */
509 while (sv_count != 0 && sv_count != last_sv_count) {
510 last_sv_count = sv_count;
513 SvFLAGS(strtab) &= ~SVTYPEMASK;
514 SvFLAGS(strtab) |= SVt_PVHV;
516 /* Destruct the global string table. */
518 /* Yell and reset the HeVAL() slots that are still holding refcounts,
519 * so that sv_free() won't fail on them.
528 array = HvARRAY(strtab);
532 warn("Unbalanced string table refcount: (%d) for \"%s\"",
533 HeVAL(hent) - Nullsv, HeKEY(hent));
534 HeVAL(hent) = Nullsv;
544 SvREFCNT_dec(strtab);
547 warn("Scalars leaked: %ld\n", (long)sv_count);
551 /* No SVs have survived, need to clean out */
554 Safefree(origfilename);
555 Safefree(archpat_auto);
556 Safefree(reg_start_tmp);
557 Safefree(HeKEY_hek(&hv_fetch_ent_mh));
560 hints = 0; /* Reset hints. Should hints be per-interpreter ? */
562 DEBUG_P(debprofdump());
564 MUTEX_DESTROY(&sv_mutex);
565 MUTEX_DESTROY(&eval_mutex);
566 COND_DESTROY(&eval_cond);
568 /* As the penultimate thing, free the non-arena SV for thrsv */
569 Safefree(SvPVX(thrsv));
570 Safefree(SvANY(thrsv));
573 #endif /* USE_THREADS */
575 /* As the absolutely last thing, free the non-arena SV for mess() */
578 /* we know that type >= SVt_PV */
580 Safefree(SvPVX(mess_sv));
581 Safefree(SvANY(mess_sv));
589 CPerlObj::perl_free(void)
591 perl_free(PerlInterpreter *sv_interp)
597 if (!(curinterp = sv_interp))
605 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
607 perl_atexit(void (*fn) (void *), void *ptr)
610 Renew(exitlist, exitlistlen+1, PerlExitListEntry);
611 exitlist[exitlistlen].fn = fn;
612 exitlist[exitlistlen].ptr = ptr;
618 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
620 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
626 char *scriptname = NULL;
627 VOL bool dosearch = FALSE;
635 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
638 croak("suidperl is no longer needed since the kernel can now execute\n\
639 setuid perl scripts securely.\n");
644 if (!(curinterp = sv_interp))
648 #if defined(NeXT) && defined(__DYNAMIC__)
649 _dyld_lookup_and_bind
650 ("__environ", (unsigned long *) &environ_pointer, NULL);
655 #ifndef VMS /* VMS doesn't have environ array */
656 origenviron = environ;
661 /* Come here if running an undumped a.out. */
663 origfilename = savepv(argv[0]);
665 cxstack_ix = -1; /* start label stack again */
667 init_postdump_symbols(argc,argv,env);
672 curpad = AvARRAY(comppad);
677 SvREFCNT_dec(main_cv);
681 oldscope = scopestack_ix;
689 /* my_exit() was called */
690 while (scopestack_ix > oldscope)
695 call_list(oldscope, endav);
697 return STATUS_NATIVE_EXPORT;
700 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
704 sv_setpvn(linestr,"",0);
705 sv = newSVpv("",0); /* first used for -I flags */
709 for (argc--,argv++; argc > 0; argc--,argv++) {
710 if (argv[0][0] != '-' || !argv[0][1])
714 validarg = " PHOOEY ";
740 if (s = moreswitches(s))
750 if (euid != uid || egid != gid)
751 croak("No -e allowed in setuid scripts");
753 e_script = newSVpv("",0);
754 filter_add(read_e_script, NULL);
757 sv_catpv(e_script, s);
759 sv_catpv(e_script, argv[1]);
763 croak("No code specified for -e");
764 sv_catpv(e_script, "\n");
767 case 'I': /* -I handled both here and in moreswitches() */
769 if (!*++s && (s=argv[1]) != Nullch) {
772 while (s && isSPACE(*s))
776 for (e = s; *e && !isSPACE(*e); e++) ;
783 } /* XXX else croak? */
797 preambleav = newAV();
798 av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
800 Sv = newSVpv("print myconfig();",0);
802 sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
804 sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
806 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
807 sv_catpv(Sv,"\" Compile-time options:");
809 sv_catpv(Sv," DEBUGGING");
812 sv_catpv(Sv," NO_EMBED");
815 sv_catpv(Sv," MULTIPLICITY");
817 sv_catpv(Sv,"\\n\",");
819 #if defined(LOCAL_PATCH_COUNT)
820 if (LOCAL_PATCH_COUNT > 0) {
822 sv_catpv(Sv,"\" Locally applied patches:\\n\",");
823 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
825 sv_catpvf(Sv,"\" \\t%s\\n\",",localpatches[i]);
829 sv_catpvf(Sv,"\" Built under %s\\n\"",OSNAME);
832 sv_catpvf(Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
834 sv_catpvf(Sv,",\" Compiled on %s\\n\"",__DATE__);
839 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
840 print \" \\%ENV:\\n @env\\n\" if @env; \
841 print \" \\@INC:\\n @INC\\n\";");
844 Sv = newSVpv("config_vars(qw(",0);
849 av_push(preambleav, Sv);
850 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
861 if (!*++s || isSPACE(*s)) {
865 /* catch use of gnu style long options */
866 if (strEQ(s, "version")) {
870 if (strEQ(s, "help")) {
877 croak("Unrecognized switch: -%s (-h will show valid options)",s);
882 if (!tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
893 if (!strchr("DIMUdmw", *s))
894 croak("Illegal switch in PERL5OPT: -%c", *s);
900 scriptname = argv[0];
903 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
905 else if (scriptname == Nullch) {
907 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
915 open_script(scriptname,dosearch,sv,&fdscript);
917 validate_suid(validarg, scriptname,fdscript);
922 main_cv = compcv = (CV*)NEWSV(1104,0);
923 sv_upgrade((SV *)compcv, SVt_PVCV);
927 av_push(comppad, Nullsv);
928 curpad = AvARRAY(comppad);
929 comppad_name = newAV();
930 comppad_name_fill = 0;
931 min_intro_pending = 0;
934 av_store(comppad_name, 0, newSVpv("@_", 2));
935 curpad[0] = (SV*)newAV();
936 SvPADMY_on(curpad[0]); /* XXX Needed? */
938 New(666, CvMUTEXP(compcv), 1, perl_mutex);
939 MUTEX_INIT(CvMUTEXP(compcv));
940 #endif /* USE_THREADS */
942 comppadlist = newAV();
943 AvREAL_off(comppadlist);
944 av_store(comppadlist, 0, (SV*)comppad_name);
945 av_store(comppadlist, 1, (SV*)comppad);
946 CvPADLIST(compcv) = comppadlist;
948 boot_core_UNIVERSAL();
951 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
952 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
956 init_predump_symbols();
957 /* init_postdump_symbols not currently designed to be called */
958 /* more than once (ENV isn't cleared first, for example) */
959 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
961 init_postdump_symbols(argc,argv,env);
965 /* now parse the script */
967 SETERRNO(0,SS$_NORMAL);
969 if (yyparse() || error_count) {
971 croak("%s had compilation errors.\n", origfilename);
973 croak("Execution of %s aborted due to compilation errors.\n",
977 curcop->cop_line = 0;
981 SvREFCNT_dec(e_script);
985 /* now that script is parsed, we can modify record separator */
987 rs = SvREFCNT_inc(nrs);
988 sv_setsv(perl_get_sv("/", TRUE), rs);
999 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1000 dump_mstats("after compilation:");
1011 CPerlObj::perl_run(void)
1013 perl_run(PerlInterpreter *sv_interp)
1022 if (!(curinterp = sv_interp))
1026 oldscope = scopestack_ix;
1031 cxstack_ix = -1; /* start context stack again */
1034 /* my_exit() was called */
1035 while (scopestack_ix > oldscope)
1038 curstash = defstash;
1040 call_list(oldscope, endav);
1042 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1043 dump_mstats("after execution: ");
1046 return STATUS_NATIVE_EXPORT;
1049 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1054 POPSTACK_TO(mainstack);
1058 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1059 sawampersand ? "Enabling" : "Omitting"));
1062 DEBUG_x(dump_all());
1063 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1065 DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1066 (unsigned long) thr));
1067 #endif /* USE_THREADS */
1070 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename);
1073 if (PERLDB_SINGLE && DBsingle)
1074 sv_setiv(DBsingle, 1);
1076 call_list(oldscope, initav);
1086 else if (main_start) {
1087 CvDEPTH(main_cv) = 1;
1098 perl_get_sv(char *name, I32 create)
1102 if (name[1] == '\0' && !isALPHA(name[0])) {
1103 PADOFFSET tmp = find_threadsv(name);
1104 if (tmp != NOT_IN_PAD) {
1106 return THREADSV(tmp);
1109 #endif /* USE_THREADS */
1110 gv = gv_fetchpv(name, create, SVt_PV);
1117 perl_get_av(char *name, I32 create)
1119 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1128 perl_get_hv(char *name, I32 create)
1130 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1139 perl_get_cv(char *name, I32 create)
1141 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1142 if (create && !GvCVu(gv))
1143 return newSUB(start_subparse(FALSE, 0),
1144 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1152 /* Be sure to refetch the stack pointer after calling these routines. */
1155 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1157 /* See G_* flags in cop.h */
1158 /* null terminated arg list */
1165 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1170 return perl_call_pv(sub_name, flags);
1174 perl_call_pv(char *sub_name, I32 flags)
1175 /* name of the subroutine */
1176 /* See G_* flags in cop.h */
1178 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1182 perl_call_method(char *methname, I32 flags)
1183 /* name of the subroutine */
1184 /* See G_* flags in cop.h */
1190 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1195 return perl_call_sv(*stack_sp--, flags);
1198 /* May be called with any of a CV, a GV, or an SV containing the name. */
1200 perl_call_sv(SV *sv, I32 flags)
1202 /* See G_* flags in cop.h */
1205 LOGOP myop; /* fake syntax tree node */
1209 bool oldcatch = CATCH_GET;
1214 if (flags & G_DISCARD) {
1219 Zero(&myop, 1, LOGOP);
1220 myop.op_next = Nullop;
1221 if (!(flags & G_NOARGS))
1222 myop.op_flags |= OPf_STACKED;
1223 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1224 (flags & G_ARRAY) ? OPf_WANT_LIST :
1229 EXTEND(stack_sp, 1);
1232 oldscope = scopestack_ix;
1234 if (PERLDB_SUB && curstash != debstash
1235 /* Handle first BEGIN of -d. */
1236 && (DBcv || (DBcv = GvCV(DBsub)))
1237 /* Try harder, since this may have been a sighandler, thus
1238 * curstash may be meaningless. */
1239 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash)
1240 && !(flags & G_NODEBUG))
1241 op->op_private |= OPpENTERSUB_DB;
1243 if (flags & G_EVAL) {
1244 cLOGOP->op_other = op;
1246 /* we're trying to emulate pp_entertry() here */
1248 register PERL_CONTEXT *cx;
1249 I32 gimme = GIMME_V;
1254 push_return(op->op_next);
1255 PUSHBLOCK(cx, CXt_EVAL, stack_sp);
1257 eval_root = op; /* Only needed so that goto works right. */
1260 if (flags & G_KEEPERR)
1275 /* my_exit() was called */
1276 curstash = defstash;
1280 croak("Callback called exit");
1289 stack_sp = stack_base + oldmark;
1290 if (flags & G_ARRAY)
1294 *++stack_sp = &sv_undef;
1302 if (op == (OP*)&myop)
1303 op = pp_entersub(ARGS);
1306 retval = stack_sp - (stack_base + oldmark);
1307 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1311 if (flags & G_EVAL) {
1312 if (scopestack_ix > oldscope) {
1316 register PERL_CONTEXT *cx;
1328 CATCH_SET(oldcatch);
1330 if (flags & G_DISCARD) {
1331 stack_sp = stack_base + oldmark;
1340 /* Eval a string. The G_EVAL flag is always assumed. */
1343 perl_eval_sv(SV *sv, I32 flags)
1345 /* See G_* flags in cop.h */
1348 UNOP myop; /* fake syntax tree node */
1349 I32 oldmark = SP - stack_base;
1356 if (flags & G_DISCARD) {
1364 EXTEND(stack_sp, 1);
1366 oldscope = scopestack_ix;
1368 if (!(flags & G_NOARGS))
1369 myop.op_flags = OPf_STACKED;
1370 myop.op_next = Nullop;
1371 myop.op_type = OP_ENTEREVAL;
1372 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1373 (flags & G_ARRAY) ? OPf_WANT_LIST :
1375 if (flags & G_KEEPERR)
1376 myop.op_flags |= OPf_SPECIAL;
1386 /* my_exit() was called */
1387 curstash = defstash;
1391 croak("Callback called exit");
1400 stack_sp = stack_base + oldmark;
1401 if (flags & G_ARRAY)
1405 *++stack_sp = &sv_undef;
1410 if (op == (OP*)&myop)
1411 op = pp_entereval(ARGS);
1414 retval = stack_sp - (stack_base + oldmark);
1415 if (!(flags & G_KEEPERR))
1420 if (flags & G_DISCARD) {
1421 stack_sp = stack_base + oldmark;
1431 perl_eval_pv(char *p, I32 croak_on_error)
1434 SV* sv = newSVpv(p, 0);
1437 perl_eval_sv(sv, G_SCALAR);
1444 if (croak_on_error && SvTRUE(ERRSV))
1445 croak(SvPVx(ERRSV, na));
1450 /* Require a module. */
1453 perl_require_pv(char *pv)
1455 SV* sv = sv_newmortal();
1456 sv_setpv(sv, "require '");
1459 perl_eval_sv(sv, G_DISCARD);
1463 magicname(char *sym, char *name, I32 namlen)
1467 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1468 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1472 usage(char *name) /* XXX move this out into a module ? */
1475 /* This message really ought to be max 23 lines.
1476 * Removed -h because the user already knows that opton. Others? */
1478 static char *usage_msg[] = {
1479 "-0[octal] specify record separator (\\0, if no argument)",
1480 "-a autosplit mode with -n or -p (splits $_ into @F)",
1481 "-c check syntax only (runs BEGIN and END blocks)",
1482 "-d[:debugger] run scripts under debugger",
1483 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1484 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1485 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1486 "-i[extension] edit <> files in place (make backup if extension supplied)",
1487 "-Idirectory specify @INC/#include directory (may be used more than once)",
1488 "-l[octal] enable line ending processing, specifies line terminator",
1489 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1490 "-n assume 'while (<>) { ... }' loop around your script",
1491 "-p assume loop like -n but print line also like sed",
1492 "-P run script through C preprocessor before compilation",
1493 "-s enable some switch parsing for switches after script name",
1494 "-S look for the script using PATH environment variable",
1495 "-T turn on tainting checks",
1496 "-u dump core after parsing script",
1497 "-U allow unsafe operations",
1498 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1499 "-V[:variable] print perl configuration information",
1500 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1501 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1505 char **p = usage_msg;
1507 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1509 printf("\n %s", *p++);
1512 /* This routine handles any switches that can be given during run */
1515 moreswitches(char *s)
1524 rschar = scan_oct(s, 4, &numlen);
1526 if (rschar & ~((U8)~0))
1528 else if (!rschar && numlen >= 2)
1529 nrs = newSVpv("", 0);
1532 nrs = newSVpv(&ch, 1);
1538 splitstr = savepv(s + 1);
1552 if (*s == ':' || *s == '=') {
1553 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1557 perldb = PERLDB_ALL;
1564 if (isALPHA(s[1])) {
1565 static char debopts[] = "psltocPmfrxuLHXD";
1568 for (s++; *s && (d = strchr(debopts,*s)); s++)
1569 debug |= 1 << (d - debopts);
1573 for (s++; isDIGIT(*s); s++) ;
1575 debug |= 0x80000000;
1577 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1578 for (s++; isALNUM(*s); s++) ;
1588 inplace = savepv(s+1);
1590 for (s = inplace; *s && !isSPACE(*s); s++) ;
1593 if (*s == '-') /* Additional switches on #! line. */
1597 case 'I': /* -I handled both here and in parse_perl() */
1600 while (*s && isSPACE(*s))
1604 for (e = s; *e && !isSPACE(*e); e++) ;
1605 p = savepvn(s, e-s);
1611 croak("No space allowed after -I");
1621 *ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1631 ors = SvPV(nrs, orslen);
1632 ors = savepvn(ors, orslen);
1636 forbid_setid("-M"); /* XXX ? */
1639 forbid_setid("-m"); /* XXX ? */
1644 /* -M-foo == 'no foo' */
1645 if (*s == '-') { use = "no "; ++s; }
1646 sv = newSVpv(use,0);
1648 /* We allow -M'Module qw(Foo Bar)' */
1649 while(isALNUM(*s) || *s==':') ++s;
1651 sv_catpv(sv, start);
1652 if (*(start-1) == 'm') {
1654 croak("Can't use '%c' after -mname", *s);
1655 sv_catpv( sv, " ()");
1658 sv_catpvn(sv, start, s-start);
1659 sv_catpv(sv, " split(/,/,q{");
1664 if (preambleav == NULL)
1665 preambleav = newAV();
1666 av_push(preambleav, sv);
1669 croak("No space allowed after -%c", *(s-1));
1686 croak("Too late for \"-T\" option");
1698 #if defined(SUBVERSION) && SUBVERSION > 0
1699 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1700 PATCHLEVEL, SUBVERSION, ARCHNAME);
1702 printf("\nThis is perl, version %s built for %s",
1703 patchlevel, ARCHNAME);
1705 #if defined(LOCAL_PATCH_COUNT)
1706 if (LOCAL_PATCH_COUNT > 0)
1707 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1708 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1711 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1713 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1716 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1717 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1720 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1721 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1724 printf("atariST series port, ++jrb bammi@cadence.com\n");
1727 Perl may be copied only under the terms of either the Artistic License or the\n\
1728 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1729 Complete documentation for Perl, including FAQ lists, should be found on\n\
1730 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1731 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1739 if (s[1] == '-') /* Additional switches on #! line. */
1750 #ifdef ALTERNATE_SHEBANG
1751 case 'S': /* OS/2 needs -S on "extproc" line. */
1759 croak("Can't emulate -%.1s on #! line",s);
1764 /* compliments of Tom Christiansen */
1766 /* unexec() can be found in the Gnu emacs distribution */
1767 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1778 prog = newSVpv(BIN_EXP, 0);
1779 sv_catpv(prog, "/perl");
1780 file = newSVpv(origfilename, 0);
1781 sv_catpv(file, ".perldump");
1783 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1784 /* unexec prints msg to stderr in case of failure */
1785 PerlProc_exit(status);
1788 # include <lib$routines.h>
1789 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1791 ABORT(); /* for use with undump */
1797 init_main_stash(void)
1802 /* Note that strtab is a rather special HV. Assumptions are made
1803 about not iterating on it, and not adding tie magic to it.
1804 It is properly deallocated in perl_destruct() */
1806 HvSHAREKEYS_off(strtab); /* mandatory */
1807 Newz(506,((XPVHV*)SvANY(strtab))->xhv_array,
1808 sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char);
1810 curstash = defstash = newHV();
1811 curstname = newSVpv("main",4);
1812 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1813 SvREFCNT_dec(GvHV(gv));
1814 GvHV(gv) = (HV*)SvREFCNT_inc(defstash);
1816 HvNAME(defstash) = savepv("main");
1817 incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1819 defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1820 errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1822 replgv = gv_HVadd(gv_fetchpv("\022", TRUE, SVt_PV)); /* ^R */
1824 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1825 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1826 sv_setpvn(ERRSV, "", 0);
1827 curstash = defstash;
1828 compiling.cop_stash = defstash;
1829 debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1830 globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1831 /* We must init $/ before switches are processed. */
1832 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1836 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1841 scriptname = find_script(scriptname, dosearch, NULL, 0);
1843 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1844 char *s = scriptname + 8;
1845 *fdscript = atoi(s);
1853 origfilename = savepv(e_script ? "-e" : scriptname);
1854 curcop->cop_filegv = gv_fetchfile(origfilename);
1855 if (strEQ(origfilename,"-"))
1857 if (*fdscript >= 0) {
1858 rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1859 #if defined(HAS_FCNTL) && defined(F_SETFD)
1861 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
1864 else if (preprocess) {
1865 char *cpp_cfg = CPPSTDIN;
1866 SV *cpp = NEWSV(0,0);
1867 SV *cmd = NEWSV(0,0);
1869 if (strEQ(cpp_cfg, "cppstdin"))
1870 sv_catpvf(cpp, "%s/", BIN_EXP);
1871 sv_catpv(cpp, cpp_cfg);
1874 sv_catpv(sv,PRIVLIB_EXP);
1878 sed %s -e \"/^[^#]/b\" \
1879 -e \"/^#[ ]*include[ ]/b\" \
1880 -e \"/^#[ ]*define[ ]/b\" \
1881 -e \"/^#[ ]*if[ ]/b\" \
1882 -e \"/^#[ ]*ifdef[ ]/b\" \
1883 -e \"/^#[ ]*ifndef[ ]/b\" \
1884 -e \"/^#[ ]*else/b\" \
1885 -e \"/^#[ ]*elif[ ]/b\" \
1886 -e \"/^#[ ]*undef[ ]/b\" \
1887 -e \"/^#[ ]*endif/b\" \
1890 (doextract ? "-e \"1,/^#/d\n\"" : ""),
1893 %s %s -e '/^[^#]/b' \
1894 -e '/^#[ ]*include[ ]/b' \
1895 -e '/^#[ ]*define[ ]/b' \
1896 -e '/^#[ ]*if[ ]/b' \
1897 -e '/^#[ ]*ifdef[ ]/b' \
1898 -e '/^#[ ]*ifndef[ ]/b' \
1899 -e '/^#[ ]*else/b' \
1900 -e '/^#[ ]*elif[ ]/b' \
1901 -e '/^#[ ]*undef[ ]/b' \
1902 -e '/^#[ ]*endif/b' \
1910 (doextract ? "-e '1,/^#/d\n'" : ""),
1912 scriptname, cpp, sv, CPPMINUS);
1914 #ifdef IAMSUID /* actually, this is caught earlier */
1915 if (euid != uid && !euid) { /* if running suidperl */
1917 (void)seteuid(uid); /* musn't stay setuid root */
1920 (void)setreuid((Uid_t)-1, uid);
1922 #ifdef HAS_SETRESUID
1923 (void)setresuid((Uid_t)-1, uid, (Uid_t)-1);
1925 PerlProc_setuid(uid);
1929 if (PerlProc_geteuid() != uid)
1930 croak("Can't do seteuid!\n");
1932 #endif /* IAMSUID */
1933 rsfp = PerlProc_popen(SvPVX(cmd), "r");
1937 else if (!*scriptname) {
1938 forbid_setid("program input from stdin");
1939 rsfp = PerlIO_stdin();
1942 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1943 #if defined(HAS_FCNTL) && defined(F_SETFD)
1945 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
1950 #ifndef IAMSUID /* in case script is not readable before setuid */
1951 if (euid && PerlLIO_stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 &&
1952 statbuf.st_mode & (S_ISUID|S_ISGID)) {
1954 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
1955 croak("Can't do setuid\n");
1959 croak("Can't open perl script \"%s\": %s\n",
1960 SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno));
1965 validate_suid(char *validarg, char *scriptname, int fdscript)
1969 /* do we need to emulate setuid on scripts? */
1971 /* This code is for those BSD systems that have setuid #! scripts disabled
1972 * in the kernel because of a security problem. Merely defining DOSUID
1973 * in perl will not fix that problem, but if you have disabled setuid
1974 * scripts in the kernel, this will attempt to emulate setuid and setgid
1975 * on scripts that have those now-otherwise-useless bits set. The setuid
1976 * root version must be called suidperl or sperlN.NNN. If regular perl
1977 * discovers that it has opened a setuid script, it calls suidperl with
1978 * the same argv that it had. If suidperl finds that the script it has
1979 * just opened is NOT setuid root, it sets the effective uid back to the
1980 * uid. We don't just make perl setuid root because that loses the
1981 * effective uid we had before invoking perl, if it was different from the
1984 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
1985 * be defined in suidperl only. suidperl must be setuid root. The
1986 * Configure script will set this up for you if you want it.
1993 if (PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
1994 croak("Can't stat script \"%s\"",origfilename);
1995 if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) {
1999 #ifndef HAS_SETREUID
2000 /* On this access check to make sure the directories are readable,
2001 * there is actually a small window that the user could use to make
2002 * filename point to an accessible directory. So there is a faint
2003 * chance that someone could execute a setuid script down in a
2004 * non-accessible directory. I don't know what to do about that.
2005 * But I don't think it's too important. The manual lies when
2006 * it says access() is useful in setuid programs.
2008 if (PerlLIO_access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/
2009 croak("Permission denied");
2011 /* If we can swap euid and uid, then we can determine access rights
2012 * with a simple stat of the file, and then compare device and
2013 * inode to make sure we did stat() on the same file we opened.
2014 * Then we just have to make sure he or she can execute it.
2017 struct stat tmpstatbuf;
2021 setreuid(euid,uid) < 0
2024 setresuid(euid,uid,(Uid_t)-1) < 0
2027 || PerlProc_getuid() != euid || PerlProc_geteuid() != uid)
2028 croak("Can't swap uid and euid"); /* really paranoid */
2029 if (PerlLIO_stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0)
2030 croak("Permission denied"); /* testing full pathname here */
2031 if (tmpstatbuf.st_dev != statbuf.st_dev ||
2032 tmpstatbuf.st_ino != statbuf.st_ino) {
2033 (void)PerlIO_close(rsfp);
2034 if (rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2036 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2037 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2038 (long)uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2039 (long)statbuf.st_dev, (long)statbuf.st_ino,
2040 SvPVX(GvSV(curcop->cop_filegv)),
2041 (long)statbuf.st_uid, (long)statbuf.st_gid);
2042 (void)PerlProc_pclose(rsfp);
2044 croak("Permission denied\n");
2048 setreuid(uid,euid) < 0
2050 # if defined(HAS_SETRESUID)
2051 setresuid(uid,euid,(Uid_t)-1) < 0
2054 || PerlProc_getuid() != uid || PerlProc_geteuid() != euid)
2055 croak("Can't reswap uid and euid");
2056 if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */
2057 croak("Permission denied\n");
2059 #endif /* HAS_SETREUID */
2060 #endif /* IAMSUID */
2062 if (!S_ISREG(statbuf.st_mode))
2063 croak("Permission denied");
2064 if (statbuf.st_mode & S_IWOTH)
2065 croak("Setuid/gid script is writable by world");
2066 doswitches = FALSE; /* -s is insecure in suid */
2068 if (sv_gets(linestr, rsfp, 0) == Nullch ||
2069 strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */
2070 croak("No #! line");
2071 s = SvPV(linestr,na)+2;
2073 while (!isSPACE(*s)) s++;
2074 for (s2 = s; (s2 > SvPV(linestr,na)+2 &&
2075 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2076 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2077 croak("Not a perl script");
2078 while (*s == ' ' || *s == '\t') s++;
2080 * #! arg must be what we saw above. They can invoke it by
2081 * mentioning suidperl explicitly, but they may not add any strange
2082 * arguments beyond what #! says if they do invoke suidperl that way.
2084 len = strlen(validarg);
2085 if (strEQ(validarg," PHOOEY ") ||
2086 strnNE(s,validarg,len) || !isSPACE(s[len]))
2087 croak("Args must match #! line");
2090 if (euid != uid && (statbuf.st_mode & S_ISUID) &&
2091 euid == statbuf.st_uid)
2093 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2094 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2095 #endif /* IAMSUID */
2097 if (euid) { /* oops, we're not the setuid root perl */
2098 (void)PerlIO_close(rsfp);
2101 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
2103 croak("Can't do setuid\n");
2106 if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) {
2108 (void)setegid(statbuf.st_gid);
2111 (void)setregid((Gid_t)-1,statbuf.st_gid);
2113 #ifdef HAS_SETRESGID
2114 (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1);
2116 PerlProc_setgid(statbuf.st_gid);
2120 if (PerlProc_getegid() != statbuf.st_gid)
2121 croak("Can't do setegid!\n");
2123 if (statbuf.st_mode & S_ISUID) {
2124 if (statbuf.st_uid != euid)
2126 (void)seteuid(statbuf.st_uid); /* all that for this */
2129 (void)setreuid((Uid_t)-1,statbuf.st_uid);
2131 #ifdef HAS_SETRESUID
2132 (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1);
2134 PerlProc_setuid(statbuf.st_uid);
2138 if (PerlProc_geteuid() != statbuf.st_uid)
2139 croak("Can't do seteuid!\n");
2141 else if (uid) { /* oops, mustn't run as root */
2143 (void)seteuid((Uid_t)uid);
2146 (void)setreuid((Uid_t)-1,(Uid_t)uid);
2148 #ifdef HAS_SETRESUID
2149 (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1);
2151 PerlProc_setuid((Uid_t)uid);
2155 if (PerlProc_geteuid() != uid)
2156 croak("Can't do seteuid!\n");
2159 if (!cando(S_IXUSR,TRUE,&statbuf))
2160 croak("Permission denied\n"); /* they can't do this */
2163 else if (preprocess)
2164 croak("-P not allowed for setuid/setgid script\n");
2165 else if (fdscript >= 0)
2166 croak("fd script not allowed in suidperl\n");
2168 croak("Script is not setuid/setgid in suidperl\n");
2170 /* We absolutely must clear out any saved ids here, so we */
2171 /* exec the real perl, substituting fd script for scriptname. */
2172 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2173 PerlIO_rewind(rsfp);
2174 PerlLIO_lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */
2175 for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ;
2176 if (!origargv[which])
2177 croak("Permission denied");
2178 origargv[which] = savepv(form("/dev/fd/%d/%s",
2179 PerlIO_fileno(rsfp), origargv[which]));
2180 #if defined(HAS_FCNTL) && defined(F_SETFD)
2181 fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */
2183 PerlProc_execv(form("%s/perl%s", BIN_EXP, patchlevel), origargv); /* try again */
2184 croak("Can't do setuid\n");
2185 #endif /* IAMSUID */
2187 if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */
2188 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2190 PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
2191 if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
2193 (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
2196 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2197 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2198 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2199 /* not set-id, must be wrapped */
2205 find_beginning(void)
2207 register char *s, *s2;
2209 /* skip forward in input to the real script? */
2213 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch)
2214 croak("No Perl script found in input\n");
2215 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2216 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
2218 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2220 while (*s == ' ' || *s == '\t') s++;
2222 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2223 if (strnEQ(s2-4,"perl",4))
2225 while (s = moreswitches(s)) ;
2227 if (cddir && PerlDir_chdir(cddir) < 0)
2228 croak("Can't chdir to %s",cddir);
2237 uid = (int)PerlProc_getuid();
2238 euid = (int)PerlProc_geteuid();
2239 gid = (int)PerlProc_getgid();
2240 egid = (int)PerlProc_getegid();
2245 tainting |= (uid && (euid != uid || egid != gid));
2249 forbid_setid(char *s)
2252 croak("No %s allowed while running setuid", s);
2254 croak("No %s allowed while running setgid", s);
2261 curstash = debstash;
2262 dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2264 DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2265 DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2266 DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2267 DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2268 sv_setiv(DBsingle, 0);
2269 DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2270 sv_setiv(DBtrace, 0);
2271 DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2272 sv_setiv(DBsignal, 0);
2273 curstash = defstash;
2276 #ifndef STRESS_REALLOC
2277 #define REASONABLE(size) (size)
2279 #define REASONABLE(size) (1) /* unreasonable */
2283 init_stacks(ARGSproto)
2285 /* start with 128-item stack and 8K cxstack */
2286 curstackinfo = new_stackinfo(REASONABLE(128),
2287 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2288 curstackinfo->si_type = SI_MAIN;
2289 curstack = curstackinfo->si_stack;
2290 mainstack = curstack; /* remember in case we switch stacks */
2292 stack_base = AvARRAY(curstack);
2293 stack_sp = stack_base;
2294 stack_max = stack_base + AvMAX(curstack);
2296 New(50,tmps_stack,REASONABLE(128),SV*);
2299 tmps_max = REASONABLE(128);
2302 * The following stacks almost certainly should be per-interpreter,
2303 * but for now they're not. XXX
2307 markstack_ptr = markstack;
2309 New(54,markstack,REASONABLE(32),I32);
2310 markstack_ptr = markstack;
2311 markstack_max = markstack + REASONABLE(32);
2319 New(54,scopestack,REASONABLE(32),I32);
2321 scopestack_max = REASONABLE(32);
2327 New(54,savestack,REASONABLE(128),ANY);
2329 savestack_max = REASONABLE(128);
2335 New(54,retstack,REASONABLE(16),OP*);
2337 retstack_max = REASONABLE(16);
2347 while (curstackinfo->si_next)
2348 curstackinfo = curstackinfo->si_next;
2349 while (curstackinfo) {
2350 PERL_SI *p = curstackinfo->si_prev;
2351 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2352 Safefree(curstackinfo->si_cxstack);
2353 Safefree(curstackinfo);
2356 Safefree(tmps_stack);
2357 /* XXX refcount interpreters to determine when to free global data
2358 Safefree(markstack);
2359 Safefree(scopestack);
2360 Safefree(savestack);
2370 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2383 subname = newSVpv("main",4);
2387 init_predump_symbols(void)
2393 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2394 stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2395 GvMULTI_on(stdingv);
2396 IoIFP(GvIOp(stdingv)) = PerlIO_stdin();
2397 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2399 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv));
2401 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2403 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2405 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2407 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv));
2409 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2410 GvMULTI_on(othergv);
2411 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2412 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2414 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2416 statname = NEWSV(66,0); /* last filename we did stat on */
2419 osname = savepv(OSNAME);
2423 init_postdump_symbols(register int argc, register char **argv, register char **env)
2430 argc--,argv++; /* skip name of script */
2432 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2435 if (argv[0][1] == '-') {
2439 if (s = strchr(argv[0], '=')) {
2441 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2444 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2447 toptarget = NEWSV(0,0);
2448 sv_upgrade(toptarget, SVt_PVFM);
2449 sv_setpvn(toptarget, "", 0);
2450 bodytarget = NEWSV(0,0);
2451 sv_upgrade(bodytarget, SVt_PVFM);
2452 sv_setpvn(bodytarget, "", 0);
2453 formtarget = bodytarget;
2456 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2457 sv_setpv(GvSV(tmpgv),origfilename);
2458 magicname("0", "0", 1);
2460 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2461 sv_setpv(GvSV(tmpgv),origargv[0]);
2462 if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2464 (void)gv_AVadd(argvgv);
2465 av_clear(GvAVn(argvgv));
2466 for (; argc > 0; argc--,argv++) {
2467 av_push(GvAVn(argvgv),newSVpv(argv[0],0));
2470 if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2474 hv_magic(hv, envgv, 'E');
2475 #ifndef VMS /* VMS doesn't have environ array */
2476 /* Note that if the supplied env parameter is actually a copy
2477 of the global environ then it may now point to free'd memory
2478 if the environment has been modified since. To avoid this
2479 problem we treat env==NULL as meaning 'use the default'
2484 environ[0] = Nullch;
2485 for (; *env; env++) {
2486 if (!(s = strchr(*env,'=')))
2492 sv = newSVpv(s--,0);
2493 (void)hv_store(hv, *env, s - *env, sv, 0);
2495 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2496 /* Sins of the RTL. See note in my_setenv(). */
2497 (void)PerlEnv_putenv(savepv(*env));
2501 #ifdef DYNAMIC_ENV_FETCH
2502 HvNAME(hv) = savepv(ENV_HV_NAME);
2506 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2507 sv_setiv(GvSV(tmpgv), (IV)getpid());
2516 s = PerlEnv_getenv("PERL5LIB");
2520 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2522 /* Treat PERL5?LIB as a possible search list logical name -- the
2523 * "natural" VMS idiom for a Unix path string. We allow each
2524 * element to be a set of |-separated directories for compatibility.
2528 if (my_trnlnm("PERL5LIB",buf,0))
2529 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2531 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2535 /* Use the ~-expanded versions of APPLLIB (undocumented),
2536 ARCHLIB PRIVLIB SITEARCH and SITELIB
2539 incpush(APPLLIB_EXP, TRUE);
2543 incpush(ARCHLIB_EXP, FALSE);
2546 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2549 incpush(PRIVLIB_EXP, TRUE);
2551 incpush(PRIVLIB_EXP, FALSE);
2555 incpush(SITEARCH_EXP, FALSE);
2559 incpush(SITELIB_EXP, TRUE);
2561 incpush(SITELIB_EXP, FALSE);
2565 incpush(".", FALSE);
2569 # define PERLLIB_SEP ';'
2572 # define PERLLIB_SEP '|'
2574 # define PERLLIB_SEP ':'
2577 #ifndef PERLLIB_MANGLE
2578 # define PERLLIB_MANGLE(s,n) (s)
2582 incpush(char *p, int addsubdirs)
2584 SV *subdir = Nullsv;
2590 subdir = sv_newmortal();
2591 if (!archpat_auto) {
2592 STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel)
2593 + sizeof("//auto"));
2594 New(55, archpat_auto, len, char);
2595 sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel);
2597 for (len = sizeof(ARCHNAME) + 2;
2598 archpat_auto[len] != '\0' && archpat_auto[len] != '/'; len++)
2599 if (archpat_auto[len] == '.') archpat_auto[len] = '_';
2604 /* Break at all separators */
2606 SV *libdir = NEWSV(55,0);
2609 /* skip any consecutive separators */
2610 while ( *p == PERLLIB_SEP ) {
2611 /* Uncomment the next line for PATH semantics */
2612 /* av_push(GvAVn(incgv), newSVpv(".", 1)); */
2616 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2617 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2622 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2623 p = Nullch; /* break out */
2627 * BEFORE pushing libdir onto @INC we may first push version- and
2628 * archname-specific sub-directories.
2631 struct stat tmpstatbuf;
2636 if ((unix = tounixspec_ts(SvPV(libdir,na),Nullch)) != Nullch) {
2638 while (unix[len-1] == '/') len--; /* Cosmetic */
2639 sv_usepvn(libdir,unix,len);
2642 PerlIO_printf(PerlIO_stderr(),
2643 "Failed to unixify @INC element \"%s\"\n",
2646 /* .../archname/version if -d .../archname/version/auto */
2647 sv_setsv(subdir, libdir);
2648 sv_catpv(subdir, archpat_auto);
2649 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2650 S_ISDIR(tmpstatbuf.st_mode))
2651 av_push(GvAVn(incgv),
2652 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2654 /* .../archname if -d .../archname/auto */
2655 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2656 strlen(patchlevel) + 1, "", 0);
2657 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2658 S_ISDIR(tmpstatbuf.st_mode))
2659 av_push(GvAVn(incgv),
2660 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2663 /* finally push this lib directory on the end of @INC */
2664 av_push(GvAVn(incgv), libdir);
2669 STATIC struct perl_thread *
2672 struct perl_thread *thr;
2675 Newz(53, thr, 1, struct perl_thread);
2676 curcop = &compiling;
2677 thr->cvcache = newHV();
2678 thr->threadsv = newAV();
2679 /* thr->threadsvp is set when find_threadsv is called */
2680 thr->specific = newAV();
2681 thr->errhv = newHV();
2682 thr->flags = THRf_R_JOINABLE;
2683 MUTEX_INIT(&thr->mutex);
2684 /* Handcraft thrsv similarly to mess_sv */
2685 New(53, thrsv, 1, SV);
2686 Newz(53, xpv, 1, XPV);
2687 SvFLAGS(thrsv) = SVt_PV;
2688 SvANY(thrsv) = (void*)xpv;
2689 SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
2690 SvPVX(thrsv) = (char*)thr;
2691 SvCUR_set(thrsv, sizeof(thr));
2692 SvLEN_set(thrsv, sizeof(thr));
2693 *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
2697 MUTEX_LOCK(&threads_mutex);
2702 MUTEX_UNLOCK(&threads_mutex);
2704 #ifdef HAVE_THREAD_INTERN
2705 init_thread_intern(thr);
2708 #ifdef SET_THREAD_SELF
2709 SET_THREAD_SELF(thr);
2711 thr->self = pthread_self();
2712 #endif /* SET_THREAD_SELF */
2716 * These must come after the SET_THR because sv_setpvn does
2717 * SvTAINT and the taint fields require dTHR.
2719 toptarget = NEWSV(0,0);
2720 sv_upgrade(toptarget, SVt_PVFM);
2721 sv_setpvn(toptarget, "", 0);
2722 bodytarget = NEWSV(0,0);
2723 sv_upgrade(bodytarget, SVt_PVFM);
2724 sv_setpvn(bodytarget, "", 0);
2725 formtarget = bodytarget;
2726 thr->errsv = newSVpv("", 0);
2727 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2730 #endif /* USE_THREADS */
2733 call_list(I32 oldscope, AV *paramList)
2736 line_t oldline = curcop->cop_line;
2741 while (AvFILL(paramList) >= 0) {
2742 CV *cv = (CV*)av_shift(paramList);
2751 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2752 (void)SvPV(atsv, len);
2755 curcop = &compiling;
2756 curcop->cop_line = oldline;
2757 if (paramList == beginav)
2758 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2760 sv_catpv(atsv, "END failed--cleanup aborted");
2761 while (scopestack_ix > oldscope)
2763 croak("%s", SvPVX(atsv));
2771 /* my_exit() was called */
2772 while (scopestack_ix > oldscope)
2775 curstash = defstash;
2777 call_list(oldscope, endav);
2779 curcop = &compiling;
2780 curcop->cop_line = oldline;
2782 if (paramList == beginav)
2783 croak("BEGIN failed--compilation aborted");
2785 croak("END failed--cleanup aborted");
2791 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2796 curcop = &compiling;
2797 curcop->cop_line = oldline;
2810 DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2811 thr, (unsigned long) status));
2812 #endif /* USE_THREADS */
2821 STATUS_NATIVE_SET(status);
2828 my_failure_exit(void)
2831 if (vaxc$errno & 1) {
2832 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2833 STATUS_NATIVE_SET(44);
2836 if (!vaxc$errno && errno) /* unlikely */
2837 STATUS_NATIVE_SET(44);
2839 STATUS_NATIVE_SET(vaxc$errno);
2844 STATUS_POSIX_SET(errno);
2846 exitstatus = STATUS_POSIX >> 8;
2847 if (exitstatus & 255)
2848 STATUS_POSIX_SET(exitstatus);
2850 STATUS_POSIX_SET(255);
2860 register PERL_CONTEXT *cx;
2865 SvREFCNT_dec(e_script);
2869 POPSTACK_TO(mainstack);
2870 if (cxstack_ix >= 0) {
2885 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2887 read_e_script(int idx, SV *buf_sv, int maxlen)
2891 p = SvPVX(e_script);
2892 nl = strchr(p, '\n');
2893 nl = (nl) ? nl+1 : SvEND(e_script);
2896 sv_catpvn(buf_sv, p, nl-p);
2897 sv_chop(e_script, nl);