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; \
57 laststype = OP_STAT; \
59 maxsysfd = MAXSYSFD; \
66 laststype = OP_STAT; \
73 in_clean_objs = FALSE; \
74 in_clean_all= FALSE; \
78 static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen));
80 static void find_beginning _((void));
81 static void forbid_setid _((char *));
82 static void incpush _((char *, int));
83 static void init_ids _((void));
84 static void init_debugger _((void));
85 static void init_lexer _((void));
86 static void init_main_stash _((void));
88 static struct perl_thread * init_main_thread _((void));
89 #endif /* USE_THREADS */
90 static void init_perllib _((void));
91 static void init_postdump_symbols _((int, char **, char **));
92 static void init_predump_symbols _((void));
93 static void my_exit_jump _((void)) __attribute__((noreturn));
94 static void nuke_stacks _((void));
95 static void open_script _((char *, bool, SV *, int *fd));
96 static void usage _((char *));
97 static void validate_suid _((char *, char*, int));
98 static I32 read_e_script _((int idx, SV *buf_sv, int maxlen));
102 CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd,
103 IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP)
105 CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP);
115 PerlInterpreter *sv_interp;
118 New(53, sv_interp, 1, PerlInterpreter);
121 #endif /* PERL_OBJECT */
125 CPerlObj::perl_construct(void)
127 perl_construct(register PerlInterpreter *sv_interp)
133 struct perl_thread *thr;
134 #endif /* FAKE_THREADS */
135 #endif /* USE_THREADS */
138 if (!(curinterp = sv_interp))
143 Zero(sv_interp, 1, PerlInterpreter);
146 /* Init the real globals (and main thread)? */
151 #ifdef ALLOC_THREAD_KEY
154 if (pthread_key_create(&thr_key, 0))
155 croak("panic: pthread_key_create");
157 MUTEX_INIT(&sv_mutex);
159 * Safe to use basic SV functions from now on (though
160 * not things like mortals or tainting yet).
162 MUTEX_INIT(&eval_mutex);
163 COND_INIT(&eval_cond);
164 MUTEX_INIT(&threads_mutex);
165 COND_INIT(&nthreads_cond);
166 #ifdef EMULATE_ATOMIC_REFCOUNTS
167 MUTEX_INIT(&svref_mutex);
168 #endif /* EMULATE_ATOMIC_REFCOUNTS */
170 thr = init_main_thread();
171 #endif /* USE_THREADS */
173 linestr = NEWSV(65,80);
174 sv_upgrade(linestr,SVt_PVIV);
176 if (!SvREADONLY(&sv_undef)) {
177 SvREADONLY_on(&sv_undef);
181 SvREADONLY_on(&sv_no);
183 sv_setpv(&sv_yes,Yes);
185 SvREADONLY_on(&sv_yes);
188 nrs = newSVpv("\n", 1);
189 rs = SvREFCNT_inc(nrs);
193 /* sighandlerp = sighandler; */
195 sighandlerp = sighandler;
201 * There is no way we can refer to them from Perl so close them to save
202 * space. The other alternative would be to provide STDAUX and STDPRN
205 (void)fclose(stdaux);
206 (void)fclose(stdprn);
213 perl_destruct_level = 1;
215 if(perl_destruct_level > 0)
220 lex_state = LEX_NOTPARSING;
222 start_env.je_prev = NULL;
223 start_env.je_ret = -1;
224 start_env.je_mustcatch = TRUE;
225 top_env = &start_env;
228 SET_NUMERIC_STANDARD();
229 #if defined(SUBVERSION) && SUBVERSION > 0
230 sprintf(patchlevel, "%7.5f", (double) 5
231 + ((double) PATCHLEVEL / (double) 1000)
232 + ((double) SUBVERSION / (double) 100000));
234 sprintf(patchlevel, "%5.3f", (double) 5 +
235 ((double) PATCHLEVEL / (double) 1000));
238 #if defined(LOCAL_PATCH_COUNT)
239 localpatches = local_patches; /* For possible -v */
242 PerlIO_init(); /* Hook to IO system */
244 fdpid = newAV(); /* for remembering popen pids by fd */
245 modglobal = newHV(); /* pointers to per-interpreter module globals */
248 New(51,debname,128,char);
249 New(52,debdelim,128,char);
257 CPerlObj::perl_destruct(void)
259 perl_destruct(register PerlInterpreter *sv_interp)
263 int destruct_level; /* 0=none, 1=full, 2=full with checks */
268 #endif /* USE_THREADS */
271 if (!(curinterp = sv_interp))
277 /* Pass 1 on any remaining threads: detach joinables, join zombies */
279 MUTEX_LOCK(&threads_mutex);
280 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
281 "perl_destruct: waiting for %d threads...\n",
283 for (t = thr->next; t != thr; t = t->next) {
284 MUTEX_LOCK(&t->mutex);
285 switch (ThrSTATE(t)) {
288 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
289 "perl_destruct: joining zombie %p\n", t));
290 ThrSETSTATE(t, THRf_DEAD);
291 MUTEX_UNLOCK(&t->mutex);
294 * The SvREFCNT_dec below may take a long time (e.g. av
295 * may contain an object scalar whose destructor gets
296 * called) so we have to unlock threads_mutex and start
299 MUTEX_UNLOCK(&threads_mutex);
301 SvREFCNT_dec((SV*)av);
302 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
303 "perl_destruct: joined zombie %p OK\n", t));
305 case THRf_R_JOINABLE:
306 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
307 "perl_destruct: detaching thread %p\n", t));
308 ThrSETSTATE(t, THRf_R_DETACHED);
310 * We unlock threads_mutex and t->mutex in the opposite order
311 * from which we locked them just so that DETACH won't
312 * deadlock if it panics. It's only a breach of good style
313 * not a bug since they are unlocks not locks.
315 MUTEX_UNLOCK(&threads_mutex);
317 MUTEX_UNLOCK(&t->mutex);
320 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
321 "perl_destruct: ignoring %p (state %u)\n",
323 MUTEX_UNLOCK(&t->mutex);
324 /* fall through and out */
327 /* We leave the above "Pass 1" loop with threads_mutex still locked */
329 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
332 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
333 "perl_destruct: final wait for %d threads\n",
335 COND_WAIT(&nthreads_cond, &threads_mutex);
337 /* At this point, we're the last thread */
338 MUTEX_UNLOCK(&threads_mutex);
339 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
340 MUTEX_DESTROY(&threads_mutex);
341 COND_DESTROY(&nthreads_cond);
342 #endif /* !defined(FAKE_THREADS) */
343 #endif /* USE_THREADS */
345 destruct_level = perl_destruct_level;
349 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
351 if (destruct_level < i)
360 /* We must account for everything. */
362 /* Destroy the main CV and syntax tree */
364 curpad = AvARRAY(comppad);
370 SvREFCNT_dec(main_cv);
375 * Try to destruct global references. We do this first so that the
376 * destructors and destructees still exist. Some sv's might remain.
377 * Non-referenced objects are on their own.
384 /* unhook hooks which will soon be, or use, destroyed data */
385 SvREFCNT_dec(warnhook);
387 SvREFCNT_dec(diehook);
389 SvREFCNT_dec(parsehook);
392 /* call exit list functions */
393 while (exitlistlen-- > 0)
394 exitlist[exitlistlen].fn(PERL_OBJECT_THIS_ exitlist[exitlistlen].ptr);
398 if (destruct_level == 0){
400 DEBUG_P(debprofdump());
402 /* The exit() function will do everything that needs doing. */
406 /* loosen bonds of global variables */
409 (void)PerlIO_close(rsfp);
413 /* Filters for program text */
414 SvREFCNT_dec(rsfp_filters);
415 rsfp_filters = Nullav;
427 sawampersand = FALSE; /* must save all match strings */
428 sawstudy = FALSE; /* do fbm_instr on all strings */
436 SvREFCNT_dec(e_script);
440 /* magical thingies */
442 Safefree(ofs); /* $, */
445 Safefree(ors); /* $\ */
448 SvREFCNT_dec(nrs); /* $\ helper */
451 multiline = 0; /* $* */
453 SvREFCNT_dec(statname);
457 /* defgv, aka *_ should be taken care of elsewhere */
459 /* clean up after study() */
460 SvREFCNT_dec(lastscream);
462 Safefree(screamfirst);
464 Safefree(screamnext);
467 /* startup and shutdown function lists */
468 SvREFCNT_dec(beginav);
470 SvREFCNT_dec(initav);
475 /* shortcuts just get cleared */
486 /* reset so print() ends up where we expect */
489 /* Prepare to destruct main symbol table. */
496 if (destruct_level >= 2) {
497 if (scopestack_ix != 0)
498 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
499 (long)scopestack_ix);
500 if (savestack_ix != 0)
501 warn("Unbalanced saves: %ld more saves than restores\n",
503 if (tmps_floor != -1)
504 warn("Unbalanced tmps: %ld more allocs than frees\n",
505 (long)tmps_floor + 1);
506 if (cxstack_ix != -1)
507 warn("Unbalanced context: %ld more PUSHes than POPs\n",
508 (long)cxstack_ix + 1);
511 /* Now absolutely destruct everything, somehow or other, loops or no. */
513 SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */
514 while (sv_count != 0 && sv_count != last_sv_count) {
515 last_sv_count = sv_count;
518 SvFLAGS(strtab) &= ~SVTYPEMASK;
519 SvFLAGS(strtab) |= SVt_PVHV;
521 /* Destruct the global string table. */
523 /* Yell and reset the HeVAL() slots that are still holding refcounts,
524 * so that sv_free() won't fail on them.
533 array = HvARRAY(strtab);
537 warn("Unbalanced string table refcount: (%d) for \"%s\"",
538 HeVAL(hent) - Nullsv, HeKEY(hent));
539 HeVAL(hent) = Nullsv;
549 SvREFCNT_dec(strtab);
552 warn("Scalars leaked: %ld\n", (long)sv_count);
556 /* No SVs have survived, need to clean out */
559 Safefree(origfilename);
560 Safefree(archpat_auto);
561 Safefree(reg_start_tmp);
562 Safefree(HeKEY_hek(&hv_fetch_ent_mh));
565 hints = 0; /* Reset hints. Should hints be per-interpreter ? */
567 DEBUG_P(debprofdump());
569 MUTEX_DESTROY(&sv_mutex);
570 MUTEX_DESTROY(&eval_mutex);
571 COND_DESTROY(&eval_cond);
573 /* As the penultimate thing, free the non-arena SV for thrsv */
574 Safefree(SvPVX(thrsv));
575 Safefree(SvANY(thrsv));
578 #endif /* USE_THREADS */
580 /* As the absolutely last thing, free the non-arena SV for mess() */
583 /* we know that type >= SVt_PV */
585 Safefree(SvPVX(mess_sv));
586 Safefree(SvANY(mess_sv));
594 CPerlObj::perl_free(void)
596 perl_free(PerlInterpreter *sv_interp)
602 if (!(curinterp = sv_interp))
610 CPerlObj::perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr)
612 perl_atexit(void (*fn) (void *), void *ptr)
615 Renew(exitlist, exitlistlen+1, PerlExitListEntry);
616 exitlist[exitlistlen].fn = fn;
617 exitlist[exitlistlen].ptr = ptr;
623 CPerlObj::perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env)
625 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
631 char *scriptname = NULL;
632 VOL bool dosearch = FALSE;
640 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
643 croak("suidperl is no longer needed since the kernel can now execute\n\
644 setuid perl scripts securely.\n");
649 if (!(curinterp = sv_interp))
653 #if defined(NeXT) && defined(__DYNAMIC__)
654 _dyld_lookup_and_bind
655 ("__environ", (unsigned long *) &environ_pointer, NULL);
660 #ifndef VMS /* VMS doesn't have environ array */
661 origenviron = environ;
666 /* Come here if running an undumped a.out. */
668 origfilename = savepv(argv[0]);
670 cxstack_ix = -1; /* start label stack again */
672 init_postdump_symbols(argc,argv,env);
677 curpad = AvARRAY(comppad);
682 SvREFCNT_dec(main_cv);
686 oldscope = scopestack_ix;
694 /* my_exit() was called */
695 while (scopestack_ix > oldscope)
700 call_list(oldscope, endav);
702 return STATUS_NATIVE_EXPORT;
705 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
709 sv_setpvn(linestr,"",0);
710 sv = newSVpv("",0); /* first used for -I flags */
714 for (argc--,argv++; argc > 0; argc--,argv++) {
715 if (argv[0][0] != '-' || !argv[0][1])
719 validarg = " PHOOEY ";
745 if (s = moreswitches(s))
755 if (euid != uid || egid != gid)
756 croak("No -e allowed in setuid scripts");
758 e_script = newSVpv("",0);
759 filter_add(read_e_script, NULL);
762 sv_catpv(e_script, s);
764 sv_catpv(e_script, argv[1]);
768 croak("No code specified for -e");
769 sv_catpv(e_script, "\n");
772 case 'I': /* -I handled both here and in moreswitches() */
774 if (!*++s && (s=argv[1]) != Nullch) {
777 while (s && isSPACE(*s))
781 for (e = s; *e && !isSPACE(*e); e++) ;
788 } /* XXX else croak? */
802 preambleav = newAV();
803 av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
805 Sv = newSVpv("print myconfig();",0);
807 sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
809 sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
811 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
812 sv_catpv(Sv,"\" Compile-time options:");
814 sv_catpv(Sv," DEBUGGING");
817 sv_catpv(Sv," NO_EMBED");
820 sv_catpv(Sv," MULTIPLICITY");
822 sv_catpv(Sv,"\\n\",");
824 #if defined(LOCAL_PATCH_COUNT)
825 if (LOCAL_PATCH_COUNT > 0) {
827 sv_catpv(Sv,"\" Locally applied patches:\\n\",");
828 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
830 sv_catpvf(Sv,"\" \\t%s\\n\",",localpatches[i]);
834 sv_catpvf(Sv,"\" Built under %s\\n\"",OSNAME);
837 sv_catpvf(Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
839 sv_catpvf(Sv,",\" Compiled on %s\\n\"",__DATE__);
844 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
845 print \" \\%ENV:\\n @env\\n\" if @env; \
846 print \" \\@INC:\\n @INC\\n\";");
849 Sv = newSVpv("config_vars(qw(",0);
854 av_push(preambleav, Sv);
855 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
866 if (!*++s || isSPACE(*s)) {
870 /* catch use of gnu style long options */
871 if (strEQ(s, "version")) {
875 if (strEQ(s, "help")) {
882 croak("Unrecognized switch: -%s (-h will show valid options)",s);
887 if (!tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
898 if (!strchr("DIMUdmw", *s))
899 croak("Illegal switch in PERL5OPT: -%c", *s);
905 scriptname = argv[0];
908 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
910 else if (scriptname == Nullch) {
912 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
920 open_script(scriptname,dosearch,sv,&fdscript);
922 validate_suid(validarg, scriptname,fdscript);
927 main_cv = compcv = (CV*)NEWSV(1104,0);
928 sv_upgrade((SV *)compcv, SVt_PVCV);
932 av_push(comppad, Nullsv);
933 curpad = AvARRAY(comppad);
934 comppad_name = newAV();
935 comppad_name_fill = 0;
936 min_intro_pending = 0;
939 av_store(comppad_name, 0, newSVpv("@_", 2));
940 curpad[0] = (SV*)newAV();
941 SvPADMY_on(curpad[0]); /* XXX Needed? */
943 New(666, CvMUTEXP(compcv), 1, perl_mutex);
944 MUTEX_INIT(CvMUTEXP(compcv));
945 #endif /* USE_THREADS */
947 comppadlist = newAV();
948 AvREAL_off(comppadlist);
949 av_store(comppadlist, 0, (SV*)comppad_name);
950 av_store(comppadlist, 1, (SV*)comppad);
951 CvPADLIST(compcv) = comppadlist;
953 boot_core_UNIVERSAL();
956 (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */
957 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
961 init_predump_symbols();
962 /* init_postdump_symbols not currently designed to be called */
963 /* more than once (ENV isn't cleared first, for example) */
964 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
966 init_postdump_symbols(argc,argv,env);
970 /* now parse the script */
972 SETERRNO(0,SS$_NORMAL);
974 if (yyparse() || error_count) {
976 croak("%s had compilation errors.\n", origfilename);
978 croak("Execution of %s aborted due to compilation errors.\n",
982 curcop->cop_line = 0;
986 SvREFCNT_dec(e_script);
990 /* now that script is parsed, we can modify record separator */
992 rs = SvREFCNT_inc(nrs);
993 sv_setsv(perl_get_sv("/", TRUE), rs);
1004 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1005 dump_mstats("after compilation:");
1016 CPerlObj::perl_run(void)
1018 perl_run(PerlInterpreter *sv_interp)
1027 if (!(curinterp = sv_interp))
1031 oldscope = scopestack_ix;
1036 cxstack_ix = -1; /* start context stack again */
1039 /* my_exit() was called */
1040 while (scopestack_ix > oldscope)
1043 curstash = defstash;
1045 call_list(oldscope, endav);
1047 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1048 dump_mstats("after execution: ");
1051 return STATUS_NATIVE_EXPORT;
1054 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
1059 POPSTACK_TO(mainstack);
1063 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1064 sawampersand ? "Enabling" : "Omitting"));
1067 DEBUG_x(dump_all());
1068 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1070 DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1071 (unsigned long) thr));
1072 #endif /* USE_THREADS */
1075 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename);
1078 if (PERLDB_SINGLE && DBsingle)
1079 sv_setiv(DBsingle, 1);
1081 call_list(oldscope, initav);
1091 else if (main_start) {
1092 CvDEPTH(main_cv) = 1;
1103 perl_get_sv(char *name, I32 create)
1107 if (name[1] == '\0' && !isALPHA(name[0])) {
1108 PADOFFSET tmp = find_threadsv(name);
1109 if (tmp != NOT_IN_PAD) {
1111 return THREADSV(tmp);
1114 #endif /* USE_THREADS */
1115 gv = gv_fetchpv(name, create, SVt_PV);
1122 perl_get_av(char *name, I32 create)
1124 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1133 perl_get_hv(char *name, I32 create)
1135 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1144 perl_get_cv(char *name, I32 create)
1146 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1147 if (create && !GvCVu(gv))
1148 return newSUB(start_subparse(FALSE, 0),
1149 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1157 /* Be sure to refetch the stack pointer after calling these routines. */
1160 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1162 /* See G_* flags in cop.h */
1163 /* null terminated arg list */
1170 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1175 return perl_call_pv(sub_name, flags);
1179 perl_call_pv(char *sub_name, I32 flags)
1180 /* name of the subroutine */
1181 /* See G_* flags in cop.h */
1183 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1187 perl_call_method(char *methname, I32 flags)
1188 /* name of the subroutine */
1189 /* See G_* flags in cop.h */
1195 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1200 return perl_call_sv(*stack_sp--, flags);
1203 /* May be called with any of a CV, a GV, or an SV containing the name. */
1205 perl_call_sv(SV *sv, I32 flags)
1207 /* See G_* flags in cop.h */
1210 LOGOP myop; /* fake syntax tree node */
1214 bool oldcatch = CATCH_GET;
1219 if (flags & G_DISCARD) {
1224 Zero(&myop, 1, LOGOP);
1225 myop.op_next = Nullop;
1226 if (!(flags & G_NOARGS))
1227 myop.op_flags |= OPf_STACKED;
1228 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1229 (flags & G_ARRAY) ? OPf_WANT_LIST :
1234 EXTEND(stack_sp, 1);
1237 oldscope = scopestack_ix;
1239 if (PERLDB_SUB && curstash != debstash
1240 /* Handle first BEGIN of -d. */
1241 && (DBcv || (DBcv = GvCV(DBsub)))
1242 /* Try harder, since this may have been a sighandler, thus
1243 * curstash may be meaningless. */
1244 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash)
1245 && !(flags & G_NODEBUG))
1246 op->op_private |= OPpENTERSUB_DB;
1248 if (flags & G_EVAL) {
1249 cLOGOP->op_other = op;
1251 /* we're trying to emulate pp_entertry() here */
1253 register PERL_CONTEXT *cx;
1254 I32 gimme = GIMME_V;
1259 push_return(op->op_next);
1260 PUSHBLOCK(cx, CXt_EVAL, stack_sp);
1262 eval_root = op; /* Only needed so that goto works right. */
1265 if (flags & G_KEEPERR)
1280 /* my_exit() was called */
1281 curstash = defstash;
1285 croak("Callback called exit");
1294 stack_sp = stack_base + oldmark;
1295 if (flags & G_ARRAY)
1299 *++stack_sp = &sv_undef;
1307 if (op == (OP*)&myop)
1308 op = pp_entersub(ARGS);
1311 retval = stack_sp - (stack_base + oldmark);
1312 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1316 if (flags & G_EVAL) {
1317 if (scopestack_ix > oldscope) {
1321 register PERL_CONTEXT *cx;
1333 CATCH_SET(oldcatch);
1335 if (flags & G_DISCARD) {
1336 stack_sp = stack_base + oldmark;
1345 /* Eval a string. The G_EVAL flag is always assumed. */
1348 perl_eval_sv(SV *sv, I32 flags)
1350 /* See G_* flags in cop.h */
1353 UNOP myop; /* fake syntax tree node */
1354 I32 oldmark = SP - stack_base;
1361 if (flags & G_DISCARD) {
1369 EXTEND(stack_sp, 1);
1371 oldscope = scopestack_ix;
1373 if (!(flags & G_NOARGS))
1374 myop.op_flags = OPf_STACKED;
1375 myop.op_next = Nullop;
1376 myop.op_type = OP_ENTEREVAL;
1377 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1378 (flags & G_ARRAY) ? OPf_WANT_LIST :
1380 if (flags & G_KEEPERR)
1381 myop.op_flags |= OPf_SPECIAL;
1391 /* my_exit() was called */
1392 curstash = defstash;
1396 croak("Callback called exit");
1405 stack_sp = stack_base + oldmark;
1406 if (flags & G_ARRAY)
1410 *++stack_sp = &sv_undef;
1415 if (op == (OP*)&myop)
1416 op = pp_entereval(ARGS);
1419 retval = stack_sp - (stack_base + oldmark);
1420 if (!(flags & G_KEEPERR))
1425 if (flags & G_DISCARD) {
1426 stack_sp = stack_base + oldmark;
1436 perl_eval_pv(char *p, I32 croak_on_error)
1439 SV* sv = newSVpv(p, 0);
1442 perl_eval_sv(sv, G_SCALAR);
1449 if (croak_on_error && SvTRUE(ERRSV))
1450 croak(SvPVx(ERRSV, na));
1455 /* Require a module. */
1458 perl_require_pv(char *pv)
1460 SV* sv = sv_newmortal();
1461 sv_setpv(sv, "require '");
1464 perl_eval_sv(sv, G_DISCARD);
1468 magicname(char *sym, char *name, I32 namlen)
1472 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1473 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1477 usage(char *name) /* XXX move this out into a module ? */
1480 /* This message really ought to be max 23 lines.
1481 * Removed -h because the user already knows that opton. Others? */
1483 static char *usage_msg[] = {
1484 "-0[octal] specify record separator (\\0, if no argument)",
1485 "-a autosplit mode with -n or -p (splits $_ into @F)",
1486 "-c check syntax only (runs BEGIN and END blocks)",
1487 "-d[:debugger] run scripts under debugger",
1488 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1489 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1490 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1491 "-i[extension] edit <> files in place (make backup if extension supplied)",
1492 "-Idirectory specify @INC/#include directory (may be used more than once)",
1493 "-l[octal] enable line ending processing, specifies line terminator",
1494 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1495 "-n assume 'while (<>) { ... }' loop around your script",
1496 "-p assume loop like -n but print line also like sed",
1497 "-P run script through C preprocessor before compilation",
1498 "-s enable some switch parsing for switches after script name",
1499 "-S look for the script using PATH environment variable",
1500 "-T turn on tainting checks",
1501 "-u dump core after parsing script",
1502 "-U allow unsafe operations",
1503 "-v print version number, patchlevel plus VERY IMPORTANT perl info",
1504 "-V[:variable] print perl configuration information",
1505 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1506 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1510 char **p = usage_msg;
1512 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1514 printf("\n %s", *p++);
1517 /* This routine handles any switches that can be given during run */
1520 moreswitches(char *s)
1529 rschar = scan_oct(s, 4, &numlen);
1531 if (rschar & ~((U8)~0))
1533 else if (!rschar && numlen >= 2)
1534 nrs = newSVpv("", 0);
1537 nrs = newSVpv(&ch, 1);
1543 splitstr = savepv(s + 1);
1557 if (*s == ':' || *s == '=') {
1558 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1562 perldb = PERLDB_ALL;
1569 if (isALPHA(s[1])) {
1570 static char debopts[] = "psltocPmfrxuLHXD";
1573 for (s++; *s && (d = strchr(debopts,*s)); s++)
1574 debug |= 1 << (d - debopts);
1578 for (s++; isDIGIT(*s); s++) ;
1580 debug |= 0x80000000;
1582 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1583 for (s++; isALNUM(*s); s++) ;
1593 inplace = savepv(s+1);
1595 for (s = inplace; *s && !isSPACE(*s); s++) ;
1598 if (*s == '-') /* Additional switches on #! line. */
1602 case 'I': /* -I handled both here and in parse_perl() */
1605 while (*s && isSPACE(*s))
1609 for (e = s; *e && !isSPACE(*e); e++) ;
1610 p = savepvn(s, e-s);
1616 croak("No space allowed after -I");
1626 *ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1636 ors = SvPV(nrs, orslen);
1637 ors = savepvn(ors, orslen);
1641 forbid_setid("-M"); /* XXX ? */
1644 forbid_setid("-m"); /* XXX ? */
1649 /* -M-foo == 'no foo' */
1650 if (*s == '-') { use = "no "; ++s; }
1651 sv = newSVpv(use,0);
1653 /* We allow -M'Module qw(Foo Bar)' */
1654 while(isALNUM(*s) || *s==':') ++s;
1656 sv_catpv(sv, start);
1657 if (*(start-1) == 'm') {
1659 croak("Can't use '%c' after -mname", *s);
1660 sv_catpv( sv, " ()");
1663 sv_catpvn(sv, start, s-start);
1664 sv_catpv(sv, " split(/,/,q{");
1669 if (preambleav == NULL)
1670 preambleav = newAV();
1671 av_push(preambleav, sv);
1674 croak("No space allowed after -%c", *(s-1));
1691 croak("Too late for \"-T\" option");
1703 #if defined(SUBVERSION) && SUBVERSION > 0
1704 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1705 PATCHLEVEL, SUBVERSION, ARCHNAME);
1707 printf("\nThis is perl, version %s built for %s",
1708 patchlevel, ARCHNAME);
1710 #if defined(LOCAL_PATCH_COUNT)
1711 if (LOCAL_PATCH_COUNT > 0)
1712 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1713 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1716 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1718 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1721 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1722 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1725 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1726 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1729 printf("atariST series port, ++jrb bammi@cadence.com\n");
1732 Perl may be copied only under the terms of either the Artistic License or the\n\
1733 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
1734 Complete documentation for Perl, including FAQ lists, should be found on\n\
1735 this system using `man perl' or `perldoc perl'. If you have access to the\n\
1736 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
1744 if (s[1] == '-') /* Additional switches on #! line. */
1755 #ifdef ALTERNATE_SHEBANG
1756 case 'S': /* OS/2 needs -S on "extproc" line. */
1764 croak("Can't emulate -%.1s on #! line",s);
1769 /* compliments of Tom Christiansen */
1771 /* unexec() can be found in the Gnu emacs distribution */
1772 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
1783 prog = newSVpv(BIN_EXP, 0);
1784 sv_catpv(prog, "/perl");
1785 file = newSVpv(origfilename, 0);
1786 sv_catpv(file, ".perldump");
1788 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1789 /* unexec prints msg to stderr in case of failure */
1790 PerlProc_exit(status);
1793 # include <lib$routines.h>
1794 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1796 ABORT(); /* for use with undump */
1802 init_main_stash(void)
1807 /* Note that strtab is a rather special HV. Assumptions are made
1808 about not iterating on it, and not adding tie magic to it.
1809 It is properly deallocated in perl_destruct() */
1811 HvSHAREKEYS_off(strtab); /* mandatory */
1812 Newz(506,((XPVHV*)SvANY(strtab))->xhv_array,
1813 sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char);
1815 curstash = defstash = newHV();
1816 curstname = newSVpv("main",4);
1817 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1818 SvREFCNT_dec(GvHV(gv));
1819 GvHV(gv) = (HV*)SvREFCNT_inc(defstash);
1821 HvNAME(defstash) = savepv("main");
1822 incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1824 defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1825 errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1827 replgv = gv_HVadd(gv_fetchpv("\022", TRUE, SVt_PV)); /* ^R */
1829 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1830 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1831 sv_setpvn(ERRSV, "", 0);
1832 curstash = defstash;
1833 compiling.cop_stash = defstash;
1834 debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1835 globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1836 /* We must init $/ before switches are processed. */
1837 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1841 open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript)
1846 scriptname = find_script(scriptname, dosearch, NULL, 0);
1848 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1849 char *s = scriptname + 8;
1850 *fdscript = atoi(s);
1858 origfilename = savepv(e_script ? "-e" : scriptname);
1859 curcop->cop_filegv = gv_fetchfile(origfilename);
1860 if (strEQ(origfilename,"-"))
1862 if (*fdscript >= 0) {
1863 rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1864 #if defined(HAS_FCNTL) && defined(F_SETFD)
1866 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
1869 else if (preprocess) {
1870 char *cpp_cfg = CPPSTDIN;
1871 SV *cpp = NEWSV(0,0);
1872 SV *cmd = NEWSV(0,0);
1874 if (strEQ(cpp_cfg, "cppstdin"))
1875 sv_catpvf(cpp, "%s/", BIN_EXP);
1876 sv_catpv(cpp, cpp_cfg);
1879 sv_catpv(sv,PRIVLIB_EXP);
1883 sed %s -e \"/^[^#]/b\" \
1884 -e \"/^#[ ]*include[ ]/b\" \
1885 -e \"/^#[ ]*define[ ]/b\" \
1886 -e \"/^#[ ]*if[ ]/b\" \
1887 -e \"/^#[ ]*ifdef[ ]/b\" \
1888 -e \"/^#[ ]*ifndef[ ]/b\" \
1889 -e \"/^#[ ]*else/b\" \
1890 -e \"/^#[ ]*elif[ ]/b\" \
1891 -e \"/^#[ ]*undef[ ]/b\" \
1892 -e \"/^#[ ]*endif/b\" \
1895 (doextract ? "-e \"1,/^#/d\n\"" : ""),
1898 %s %s -e '/^[^#]/b' \
1899 -e '/^#[ ]*include[ ]/b' \
1900 -e '/^#[ ]*define[ ]/b' \
1901 -e '/^#[ ]*if[ ]/b' \
1902 -e '/^#[ ]*ifdef[ ]/b' \
1903 -e '/^#[ ]*ifndef[ ]/b' \
1904 -e '/^#[ ]*else/b' \
1905 -e '/^#[ ]*elif[ ]/b' \
1906 -e '/^#[ ]*undef[ ]/b' \
1907 -e '/^#[ ]*endif/b' \
1915 (doextract ? "-e '1,/^#/d\n'" : ""),
1917 scriptname, cpp, sv, CPPMINUS);
1919 #ifdef IAMSUID /* actually, this is caught earlier */
1920 if (euid != uid && !euid) { /* if running suidperl */
1922 (void)seteuid(uid); /* musn't stay setuid root */
1925 (void)setreuid((Uid_t)-1, uid);
1927 #ifdef HAS_SETRESUID
1928 (void)setresuid((Uid_t)-1, uid, (Uid_t)-1);
1930 PerlProc_setuid(uid);
1934 if (PerlProc_geteuid() != uid)
1935 croak("Can't do seteuid!\n");
1937 #endif /* IAMSUID */
1938 rsfp = PerlProc_popen(SvPVX(cmd), "r");
1942 else if (!*scriptname) {
1943 forbid_setid("program input from stdin");
1944 rsfp = PerlIO_stdin();
1947 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1948 #if defined(HAS_FCNTL) && defined(F_SETFD)
1950 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
1955 #ifndef IAMSUID /* in case script is not readable before setuid */
1956 if (euid && PerlLIO_stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 &&
1957 statbuf.st_mode & (S_ISUID|S_ISGID)) {
1959 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
1960 croak("Can't do setuid\n");
1964 croak("Can't open perl script \"%s\": %s\n",
1965 SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno));
1970 validate_suid(char *validarg, char *scriptname, int fdscript)
1974 /* do we need to emulate setuid on scripts? */
1976 /* This code is for those BSD systems that have setuid #! scripts disabled
1977 * in the kernel because of a security problem. Merely defining DOSUID
1978 * in perl will not fix that problem, but if you have disabled setuid
1979 * scripts in the kernel, this will attempt to emulate setuid and setgid
1980 * on scripts that have those now-otherwise-useless bits set. The setuid
1981 * root version must be called suidperl or sperlN.NNN. If regular perl
1982 * discovers that it has opened a setuid script, it calls suidperl with
1983 * the same argv that it had. If suidperl finds that the script it has
1984 * just opened is NOT setuid root, it sets the effective uid back to the
1985 * uid. We don't just make perl setuid root because that loses the
1986 * effective uid we had before invoking perl, if it was different from the
1989 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
1990 * be defined in suidperl only. suidperl must be setuid root. The
1991 * Configure script will set this up for you if you want it.
1998 if (PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
1999 croak("Can't stat script \"%s\"",origfilename);
2000 if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) {
2004 #ifndef HAS_SETREUID
2005 /* On this access check to make sure the directories are readable,
2006 * there is actually a small window that the user could use to make
2007 * filename point to an accessible directory. So there is a faint
2008 * chance that someone could execute a setuid script down in a
2009 * non-accessible directory. I don't know what to do about that.
2010 * But I don't think it's too important. The manual lies when
2011 * it says access() is useful in setuid programs.
2013 if (PerlLIO_access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/
2014 croak("Permission denied");
2016 /* If we can swap euid and uid, then we can determine access rights
2017 * with a simple stat of the file, and then compare device and
2018 * inode to make sure we did stat() on the same file we opened.
2019 * Then we just have to make sure he or she can execute it.
2022 struct stat tmpstatbuf;
2026 setreuid(euid,uid) < 0
2029 setresuid(euid,uid,(Uid_t)-1) < 0
2032 || PerlProc_getuid() != euid || PerlProc_geteuid() != uid)
2033 croak("Can't swap uid and euid"); /* really paranoid */
2034 if (PerlLIO_stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0)
2035 croak("Permission denied"); /* testing full pathname here */
2036 if (tmpstatbuf.st_dev != statbuf.st_dev ||
2037 tmpstatbuf.st_ino != statbuf.st_ino) {
2038 (void)PerlIO_close(rsfp);
2039 if (rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2041 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2042 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2043 (long)uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2044 (long)statbuf.st_dev, (long)statbuf.st_ino,
2045 SvPVX(GvSV(curcop->cop_filegv)),
2046 (long)statbuf.st_uid, (long)statbuf.st_gid);
2047 (void)PerlProc_pclose(rsfp);
2049 croak("Permission denied\n");
2053 setreuid(uid,euid) < 0
2055 # if defined(HAS_SETRESUID)
2056 setresuid(uid,euid,(Uid_t)-1) < 0
2059 || PerlProc_getuid() != uid || PerlProc_geteuid() != euid)
2060 croak("Can't reswap uid and euid");
2061 if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */
2062 croak("Permission denied\n");
2064 #endif /* HAS_SETREUID */
2065 #endif /* IAMSUID */
2067 if (!S_ISREG(statbuf.st_mode))
2068 croak("Permission denied");
2069 if (statbuf.st_mode & S_IWOTH)
2070 croak("Setuid/gid script is writable by world");
2071 doswitches = FALSE; /* -s is insecure in suid */
2073 if (sv_gets(linestr, rsfp, 0) == Nullch ||
2074 strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */
2075 croak("No #! line");
2076 s = SvPV(linestr,na)+2;
2078 while (!isSPACE(*s)) s++;
2079 for (s2 = s; (s2 > SvPV(linestr,na)+2 &&
2080 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2081 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2082 croak("Not a perl script");
2083 while (*s == ' ' || *s == '\t') s++;
2085 * #! arg must be what we saw above. They can invoke it by
2086 * mentioning suidperl explicitly, but they may not add any strange
2087 * arguments beyond what #! says if they do invoke suidperl that way.
2089 len = strlen(validarg);
2090 if (strEQ(validarg," PHOOEY ") ||
2091 strnNE(s,validarg,len) || !isSPACE(s[len]))
2092 croak("Args must match #! line");
2095 if (euid != uid && (statbuf.st_mode & S_ISUID) &&
2096 euid == statbuf.st_uid)
2098 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2099 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2100 #endif /* IAMSUID */
2102 if (euid) { /* oops, we're not the setuid root perl */
2103 (void)PerlIO_close(rsfp);
2106 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
2108 croak("Can't do setuid\n");
2111 if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) {
2113 (void)setegid(statbuf.st_gid);
2116 (void)setregid((Gid_t)-1,statbuf.st_gid);
2118 #ifdef HAS_SETRESGID
2119 (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1);
2121 PerlProc_setgid(statbuf.st_gid);
2125 if (PerlProc_getegid() != statbuf.st_gid)
2126 croak("Can't do setegid!\n");
2128 if (statbuf.st_mode & S_ISUID) {
2129 if (statbuf.st_uid != euid)
2131 (void)seteuid(statbuf.st_uid); /* all that for this */
2134 (void)setreuid((Uid_t)-1,statbuf.st_uid);
2136 #ifdef HAS_SETRESUID
2137 (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1);
2139 PerlProc_setuid(statbuf.st_uid);
2143 if (PerlProc_geteuid() != statbuf.st_uid)
2144 croak("Can't do seteuid!\n");
2146 else if (uid) { /* oops, mustn't run as root */
2148 (void)seteuid((Uid_t)uid);
2151 (void)setreuid((Uid_t)-1,(Uid_t)uid);
2153 #ifdef HAS_SETRESUID
2154 (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1);
2156 PerlProc_setuid((Uid_t)uid);
2160 if (PerlProc_geteuid() != uid)
2161 croak("Can't do seteuid!\n");
2164 if (!cando(S_IXUSR,TRUE,&statbuf))
2165 croak("Permission denied\n"); /* they can't do this */
2168 else if (preprocess)
2169 croak("-P not allowed for setuid/setgid script\n");
2170 else if (fdscript >= 0)
2171 croak("fd script not allowed in suidperl\n");
2173 croak("Script is not setuid/setgid in suidperl\n");
2175 /* We absolutely must clear out any saved ids here, so we */
2176 /* exec the real perl, substituting fd script for scriptname. */
2177 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2178 PerlIO_rewind(rsfp);
2179 PerlLIO_lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */
2180 for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ;
2181 if (!origargv[which])
2182 croak("Permission denied");
2183 origargv[which] = savepv(form("/dev/fd/%d/%s",
2184 PerlIO_fileno(rsfp), origargv[which]));
2185 #if defined(HAS_FCNTL) && defined(F_SETFD)
2186 fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */
2188 PerlProc_execv(form("%s/perl%s", BIN_EXP, patchlevel), origargv); /* try again */
2189 croak("Can't do setuid\n");
2190 #endif /* IAMSUID */
2192 if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */
2193 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2195 PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
2196 if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
2198 (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
2201 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2202 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2203 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2204 /* not set-id, must be wrapped */
2210 find_beginning(void)
2212 register char *s, *s2;
2214 /* skip forward in input to the real script? */
2218 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch)
2219 croak("No Perl script found in input\n");
2220 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2221 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
2223 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2225 while (*s == ' ' || *s == '\t') s++;
2227 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2228 if (strnEQ(s2-4,"perl",4))
2230 while (s = moreswitches(s)) ;
2232 if (cddir && PerlDir_chdir(cddir) < 0)
2233 croak("Can't chdir to %s",cddir);
2242 uid = (int)PerlProc_getuid();
2243 euid = (int)PerlProc_geteuid();
2244 gid = (int)PerlProc_getgid();
2245 egid = (int)PerlProc_getegid();
2250 tainting |= (uid && (euid != uid || egid != gid));
2254 forbid_setid(char *s)
2257 croak("No %s allowed while running setuid", s);
2259 croak("No %s allowed while running setgid", s);
2266 curstash = debstash;
2267 dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2269 DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2270 DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2271 DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2272 DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2273 sv_setiv(DBsingle, 0);
2274 DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2275 sv_setiv(DBtrace, 0);
2276 DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2277 sv_setiv(DBsignal, 0);
2278 curstash = defstash;
2281 #ifndef STRESS_REALLOC
2282 #define REASONABLE(size) (size)
2284 #define REASONABLE(size) (1) /* unreasonable */
2288 init_stacks(ARGSproto)
2290 /* start with 128-item stack and 8K cxstack */
2291 curstackinfo = new_stackinfo(REASONABLE(128),
2292 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2293 curstackinfo->si_type = SI_MAIN;
2294 curstack = curstackinfo->si_stack;
2295 mainstack = curstack; /* remember in case we switch stacks */
2297 stack_base = AvARRAY(curstack);
2298 stack_sp = stack_base;
2299 stack_max = stack_base + AvMAX(curstack);
2301 New(50,tmps_stack,REASONABLE(128),SV*);
2304 tmps_max = REASONABLE(128);
2307 * The following stacks almost certainly should be per-interpreter,
2308 * but for now they're not. XXX
2312 markstack_ptr = markstack;
2314 New(54,markstack,REASONABLE(32),I32);
2315 markstack_ptr = markstack;
2316 markstack_max = markstack + REASONABLE(32);
2324 New(54,scopestack,REASONABLE(32),I32);
2326 scopestack_max = REASONABLE(32);
2332 New(54,savestack,REASONABLE(128),ANY);
2334 savestack_max = REASONABLE(128);
2340 New(54,retstack,REASONABLE(16),OP*);
2342 retstack_max = REASONABLE(16);
2352 while (curstackinfo->si_next)
2353 curstackinfo = curstackinfo->si_next;
2354 while (curstackinfo) {
2355 PERL_SI *p = curstackinfo->si_prev;
2356 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
2357 Safefree(curstackinfo->si_cxstack);
2358 Safefree(curstackinfo);
2361 Safefree(tmps_stack);
2362 /* XXX refcount interpreters to determine when to free global data
2363 Safefree(markstack);
2364 Safefree(scopestack);
2365 Safefree(savestack);
2375 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2388 subname = newSVpv("main",4);
2392 init_predump_symbols(void)
2398 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2399 stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2400 GvMULTI_on(stdingv);
2401 IoIFP(GvIOp(stdingv)) = PerlIO_stdin();
2402 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2404 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv));
2406 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2408 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2410 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2412 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv));
2414 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2415 GvMULTI_on(othergv);
2416 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2417 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2419 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2421 statname = NEWSV(66,0); /* last filename we did stat on */
2424 osname = savepv(OSNAME);
2428 init_postdump_symbols(register int argc, register char **argv, register char **env)
2435 argc--,argv++; /* skip name of script */
2437 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2440 if (argv[0][1] == '-') {
2444 if (s = strchr(argv[0], '=')) {
2446 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2449 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2452 toptarget = NEWSV(0,0);
2453 sv_upgrade(toptarget, SVt_PVFM);
2454 sv_setpvn(toptarget, "", 0);
2455 bodytarget = NEWSV(0,0);
2456 sv_upgrade(bodytarget, SVt_PVFM);
2457 sv_setpvn(bodytarget, "", 0);
2458 formtarget = bodytarget;
2461 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2462 sv_setpv(GvSV(tmpgv),origfilename);
2463 magicname("0", "0", 1);
2465 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2466 sv_setpv(GvSV(tmpgv),origargv[0]);
2467 if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2469 (void)gv_AVadd(argvgv);
2470 av_clear(GvAVn(argvgv));
2471 for (; argc > 0; argc--,argv++) {
2472 av_push(GvAVn(argvgv),newSVpv(argv[0],0));
2475 if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2479 hv_magic(hv, envgv, 'E');
2480 #ifndef VMS /* VMS doesn't have environ array */
2481 /* Note that if the supplied env parameter is actually a copy
2482 of the global environ then it may now point to free'd memory
2483 if the environment has been modified since. To avoid this
2484 problem we treat env==NULL as meaning 'use the default'
2489 environ[0] = Nullch;
2490 for (; *env; env++) {
2491 if (!(s = strchr(*env,'=')))
2497 sv = newSVpv(s--,0);
2498 (void)hv_store(hv, *env, s - *env, sv, 0);
2500 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2501 /* Sins of the RTL. See note in my_setenv(). */
2502 (void)PerlEnv_putenv(savepv(*env));
2506 #ifdef DYNAMIC_ENV_FETCH
2507 HvNAME(hv) = savepv(ENV_HV_NAME);
2511 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2512 sv_setiv(GvSV(tmpgv), (IV)getpid());
2521 s = PerlEnv_getenv("PERL5LIB");
2525 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2527 /* Treat PERL5?LIB as a possible search list logical name -- the
2528 * "natural" VMS idiom for a Unix path string. We allow each
2529 * element to be a set of |-separated directories for compatibility.
2533 if (my_trnlnm("PERL5LIB",buf,0))
2534 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2536 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2540 /* Use the ~-expanded versions of APPLLIB (undocumented),
2541 ARCHLIB PRIVLIB SITEARCH and SITELIB
2544 incpush(APPLLIB_EXP, TRUE);
2548 incpush(ARCHLIB_EXP, FALSE);
2551 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2554 incpush(PRIVLIB_EXP, TRUE);
2556 incpush(PRIVLIB_EXP, FALSE);
2560 incpush(SITEARCH_EXP, FALSE);
2564 incpush(SITELIB_EXP, TRUE);
2566 incpush(SITELIB_EXP, FALSE);
2570 incpush(".", FALSE);
2574 # define PERLLIB_SEP ';'
2577 # define PERLLIB_SEP '|'
2579 # define PERLLIB_SEP ':'
2582 #ifndef PERLLIB_MANGLE
2583 # define PERLLIB_MANGLE(s,n) (s)
2587 incpush(char *p, int addsubdirs)
2589 SV *subdir = Nullsv;
2595 subdir = sv_newmortal();
2596 if (!archpat_auto) {
2597 STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel)
2598 + sizeof("//auto"));
2599 New(55, archpat_auto, len, char);
2600 sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel);
2602 for (len = sizeof(ARCHNAME) + 2;
2603 archpat_auto[len] != '\0' && archpat_auto[len] != '/'; len++)
2604 if (archpat_auto[len] == '.') archpat_auto[len] = '_';
2609 /* Break at all separators */
2611 SV *libdir = NEWSV(55,0);
2614 /* skip any consecutive separators */
2615 while ( *p == PERLLIB_SEP ) {
2616 /* Uncomment the next line for PATH semantics */
2617 /* av_push(GvAVn(incgv), newSVpv(".", 1)); */
2621 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2622 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2627 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2628 p = Nullch; /* break out */
2632 * BEFORE pushing libdir onto @INC we may first push version- and
2633 * archname-specific sub-directories.
2636 struct stat tmpstatbuf;
2641 if ((unix = tounixspec_ts(SvPV(libdir,na),Nullch)) != Nullch) {
2643 while (unix[len-1] == '/') len--; /* Cosmetic */
2644 sv_usepvn(libdir,unix,len);
2647 PerlIO_printf(PerlIO_stderr(),
2648 "Failed to unixify @INC element \"%s\"\n",
2651 /* .../archname/version if -d .../archname/version/auto */
2652 sv_setsv(subdir, libdir);
2653 sv_catpv(subdir, archpat_auto);
2654 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2655 S_ISDIR(tmpstatbuf.st_mode))
2656 av_push(GvAVn(incgv),
2657 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2659 /* .../archname if -d .../archname/auto */
2660 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2661 strlen(patchlevel) + 1, "", 0);
2662 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2663 S_ISDIR(tmpstatbuf.st_mode))
2664 av_push(GvAVn(incgv),
2665 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2668 /* finally push this lib directory on the end of @INC */
2669 av_push(GvAVn(incgv), libdir);
2674 STATIC struct perl_thread *
2677 struct perl_thread *thr;
2680 Newz(53, thr, 1, struct perl_thread);
2681 curcop = &compiling;
2682 thr->cvcache = newHV();
2683 thr->threadsv = newAV();
2684 /* thr->threadsvp is set when find_threadsv is called */
2685 thr->specific = newAV();
2686 thr->errhv = newHV();
2687 thr->flags = THRf_R_JOINABLE;
2688 MUTEX_INIT(&thr->mutex);
2689 /* Handcraft thrsv similarly to mess_sv */
2690 New(53, thrsv, 1, SV);
2691 Newz(53, xpv, 1, XPV);
2692 SvFLAGS(thrsv) = SVt_PV;
2693 SvANY(thrsv) = (void*)xpv;
2694 SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
2695 SvPVX(thrsv) = (char*)thr;
2696 SvCUR_set(thrsv, sizeof(thr));
2697 SvLEN_set(thrsv, sizeof(thr));
2698 *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
2702 MUTEX_LOCK(&threads_mutex);
2707 MUTEX_UNLOCK(&threads_mutex);
2709 #ifdef HAVE_THREAD_INTERN
2710 init_thread_intern(thr);
2713 #ifdef SET_THREAD_SELF
2714 SET_THREAD_SELF(thr);
2716 thr->self = pthread_self();
2717 #endif /* SET_THREAD_SELF */
2721 * These must come after the SET_THR because sv_setpvn does
2722 * SvTAINT and the taint fields require dTHR.
2724 toptarget = NEWSV(0,0);
2725 sv_upgrade(toptarget, SVt_PVFM);
2726 sv_setpvn(toptarget, "", 0);
2727 bodytarget = NEWSV(0,0);
2728 sv_upgrade(bodytarget, SVt_PVFM);
2729 sv_setpvn(bodytarget, "", 0);
2730 formtarget = bodytarget;
2731 thr->errsv = newSVpv("", 0);
2732 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2735 #endif /* USE_THREADS */
2738 call_list(I32 oldscope, AV *paramList)
2741 line_t oldline = curcop->cop_line;
2746 while (AvFILL(paramList) >= 0) {
2747 CV *cv = (CV*)av_shift(paramList);
2756 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2757 (void)SvPV(atsv, len);
2760 curcop = &compiling;
2761 curcop->cop_line = oldline;
2762 if (paramList == beginav)
2763 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2765 sv_catpv(atsv, "END failed--cleanup aborted");
2766 while (scopestack_ix > oldscope)
2768 croak("%s", SvPVX(atsv));
2776 /* my_exit() was called */
2777 while (scopestack_ix > oldscope)
2780 curstash = defstash;
2782 call_list(oldscope, endav);
2784 curcop = &compiling;
2785 curcop->cop_line = oldline;
2787 if (paramList == beginav)
2788 croak("BEGIN failed--compilation aborted");
2790 croak("END failed--cleanup aborted");
2796 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2801 curcop = &compiling;
2802 curcop->cop_line = oldline;
2815 DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2816 thr, (unsigned long) status));
2817 #endif /* USE_THREADS */
2826 STATUS_NATIVE_SET(status);
2833 my_failure_exit(void)
2836 if (vaxc$errno & 1) {
2837 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2838 STATUS_NATIVE_SET(44);
2841 if (!vaxc$errno && errno) /* unlikely */
2842 STATUS_NATIVE_SET(44);
2844 STATUS_NATIVE_SET(vaxc$errno);
2849 STATUS_POSIX_SET(errno);
2851 exitstatus = STATUS_POSIX >> 8;
2852 if (exitstatus & 255)
2853 STATUS_POSIX_SET(exitstatus);
2855 STATUS_POSIX_SET(255);
2865 register PERL_CONTEXT *cx;
2870 SvREFCNT_dec(e_script);
2874 POPSTACK_TO(mainstack);
2875 if (cxstack_ix >= 0) {
2890 read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen)
2892 read_e_script(int idx, SV *buf_sv, int maxlen)
2896 p = SvPVX(e_script);
2897 nl = strchr(p, '\n');
2898 nl = (nl) ? nl+1 : SvEND(e_script);
2901 sv_catpvn(buf_sv, p, nl-p);
2902 sv_chop(e_script, nl);