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> */
27 dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n";
35 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
45 curcop = &compiling; \
52 laststype = OP_STAT; \
54 maxsysfd = MAXSYSFD; \
61 laststype = OP_STAT; \
65 static void find_beginning _((void));
66 static void forbid_setid _((char *));
67 static void incpush _((char *, int));
68 static void init_ids _((void));
69 static void init_debugger _((void));
70 static void init_lexer _((void));
71 static void init_main_stash _((void));
73 static struct perl_thread * init_main_thread _((void));
74 #endif /* USE_THREADS */
75 static void init_perllib _((void));
76 static void init_postdump_symbols _((int, char **, char **));
77 static void init_predump_symbols _((void));
78 static void my_exit_jump _((void)) __attribute__((noreturn));
79 static void nuke_stacks _((void));
80 static void open_script _((char *, bool, SV *));
81 static void usage _((char *));
82 static void validate_suid _((char *, char*));
84 static int fdscript = -1;
89 PerlInterpreter *sv_interp;
92 New(53, sv_interp, 1, PerlInterpreter);
97 perl_construct(register PerlInterpreter *sv_interp)
102 struct perl_thread *thr;
103 #endif /* FAKE_THREADS */
104 #endif /* USE_THREADS */
106 if (!(curinterp = sv_interp))
110 Zero(sv_interp, 1, PerlInterpreter);
113 /* Init the real globals (and main thread)? */
118 #ifdef ALLOC_THREAD_KEY
121 if (pthread_key_create(&thr_key, 0))
122 croak("panic: pthread_key_create");
124 MUTEX_INIT(&sv_mutex);
126 * Safe to use basic SV functions from now on (though
127 * not things like mortals or tainting yet).
129 MUTEX_INIT(&eval_mutex);
130 COND_INIT(&eval_cond);
131 MUTEX_INIT(&threads_mutex);
132 COND_INIT(&nthreads_cond);
133 #ifdef EMULATE_ATOMIC_REFCOUNTS
134 MUTEX_INIT(&svref_mutex);
135 #endif /* EMULATE_ATOMIC_REFCOUNTS */
137 thr = init_main_thread();
138 #endif /* USE_THREADS */
140 linestr = NEWSV(65,80);
141 sv_upgrade(linestr,SVt_PVIV);
143 if (!SvREADONLY(&sv_undef)) {
144 SvREADONLY_on(&sv_undef);
148 SvREADONLY_on(&sv_no);
150 sv_setpv(&sv_yes,Yes);
152 SvREADONLY_on(&sv_yes);
155 nrs = newSVpv("\n", 1);
156 rs = SvREFCNT_inc(nrs);
158 sighandlerp = sighandler;
163 * There is no way we can refer to them from Perl so close them to save
164 * space. The other alternative would be to provide STDAUX and STDPRN
167 (void)fclose(stdaux);
168 (void)fclose(stdprn);
174 perl_destruct_level = 1;
176 if(perl_destruct_level > 0)
181 lex_state = LEX_NOTPARSING;
183 start_env.je_prev = NULL;
184 start_env.je_ret = -1;
185 start_env.je_mustcatch = TRUE;
186 top_env = &start_env;
189 SET_NUMERIC_STANDARD();
190 #if defined(SUBVERSION) && SUBVERSION > 0
191 sprintf(patchlevel, "%7.5f", (double) 5
192 + ((double) PATCHLEVEL / (double) 1000)
193 + ((double) SUBVERSION / (double) 100000));
195 sprintf(patchlevel, "%5.3f", (double) 5 +
196 ((double) PATCHLEVEL / (double) 1000));
199 #if defined(LOCAL_PATCH_COUNT)
200 localpatches = local_patches; /* For possible -v */
203 PerlIO_init(); /* Hook to IO system */
205 fdpid = newAV(); /* for remembering popen pids by fd */
209 New(51,debname,128,char);
210 New(52,debdelim,128,char);
217 perl_destruct(register PerlInterpreter *sv_interp)
220 int destruct_level; /* 0=none, 1=full, 2=full with checks */
225 #endif /* USE_THREADS */
227 if (!(curinterp = sv_interp))
232 /* Pass 1 on any remaining threads: detach joinables, join zombies */
234 MUTEX_LOCK(&threads_mutex);
235 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
236 "perl_destruct: waiting for %d threads...\n",
238 for (t = thr->next; t != thr; t = t->next) {
239 MUTEX_LOCK(&t->mutex);
240 switch (ThrSTATE(t)) {
243 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
244 "perl_destruct: joining zombie %p\n", t));
245 ThrSETSTATE(t, THRf_DEAD);
246 MUTEX_UNLOCK(&t->mutex);
249 * The SvREFCNT_dec below may take a long time (e.g. av
250 * may contain an object scalar whose destructor gets
251 * called) so we have to unlock threads_mutex and start
254 MUTEX_UNLOCK(&threads_mutex);
256 SvREFCNT_dec((SV*)av);
257 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
258 "perl_destruct: joined zombie %p OK\n", t));
260 case THRf_R_JOINABLE:
261 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
262 "perl_destruct: detaching thread %p\n", t));
263 ThrSETSTATE(t, THRf_R_DETACHED);
265 * We unlock threads_mutex and t->mutex in the opposite order
266 * from which we locked them just so that DETACH won't
267 * deadlock if it panics. It's only a breach of good style
268 * not a bug since they are unlocks not locks.
270 MUTEX_UNLOCK(&threads_mutex);
272 MUTEX_UNLOCK(&t->mutex);
275 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
276 "perl_destruct: ignoring %p (state %u)\n",
278 MUTEX_UNLOCK(&t->mutex);
279 /* fall through and out */
282 /* We leave the above "Pass 1" loop with threads_mutex still locked */
284 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
287 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
288 "perl_destruct: final wait for %d threads\n",
290 COND_WAIT(&nthreads_cond, &threads_mutex);
292 /* At this point, we're the last thread */
293 MUTEX_UNLOCK(&threads_mutex);
294 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n"));
295 MUTEX_DESTROY(&threads_mutex);
296 COND_DESTROY(&nthreads_cond);
297 #endif /* !defined(FAKE_THREADS) */
298 #endif /* USE_THREADS */
300 destruct_level = perl_destruct_level;
304 if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) {
306 if (destruct_level < i)
315 /* We must account for everything. */
317 /* Destroy the main CV and syntax tree */
319 curpad = AvARRAY(comppad);
324 SvREFCNT_dec(main_cv);
329 * Try to destruct global references. We do this first so that the
330 * destructors and destructees still exist. Some sv's might remain.
331 * Non-referenced objects are on their own.
338 /* unhook hooks which will soon be, or use, destroyed data */
339 SvREFCNT_dec(warnhook);
341 SvREFCNT_dec(diehook);
343 SvREFCNT_dec(parsehook);
346 if (destruct_level == 0){
348 DEBUG_P(debprofdump());
350 /* The exit() function will do everything that needs doing. */
354 /* loosen bonds of global variables */
357 (void)PerlIO_close(rsfp);
361 /* Filters for program text */
362 SvREFCNT_dec(rsfp_filters);
363 rsfp_filters = Nullav;
375 sawampersand = FALSE; /* must save all match strings */
376 sawstudy = FALSE; /* do fbm_instr on all strings */
391 /* magical thingies */
393 Safefree(ofs); /* $, */
396 Safefree(ors); /* $\ */
399 SvREFCNT_dec(nrs); /* $\ helper */
402 multiline = 0; /* $* */
404 SvREFCNT_dec(statname);
408 /* defgv, aka *_ should be taken care of elsewhere */
410 /* clean up after study() */
411 SvREFCNT_dec(lastscream);
413 Safefree(screamfirst);
415 Safefree(screamnext);
418 /* startup and shutdown function lists */
419 SvREFCNT_dec(beginav);
421 SvREFCNT_dec(initav);
426 /* shortcuts just get cleared */
436 /* reset so print() ends up where we expect */
439 /* Prepare to destruct main symbol table. */
446 if (destruct_level >= 2) {
447 if (scopestack_ix != 0)
448 warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
449 (long)scopestack_ix);
450 if (savestack_ix != 0)
451 warn("Unbalanced saves: %ld more saves than restores\n",
453 if (tmps_floor != -1)
454 warn("Unbalanced tmps: %ld more allocs than frees\n",
455 (long)tmps_floor + 1);
456 if (cxstack_ix != -1)
457 warn("Unbalanced context: %ld more PUSHes than POPs\n",
458 (long)cxstack_ix + 1);
461 /* Now absolutely destruct everything, somehow or other, loops or no. */
463 SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */
464 while (sv_count != 0 && sv_count != last_sv_count) {
465 last_sv_count = sv_count;
468 SvFLAGS(strtab) &= ~SVTYPEMASK;
469 SvFLAGS(strtab) |= SVt_PVHV;
471 /* Destruct the global string table. */
473 /* Yell and reset the HeVAL() slots that are still holding refcounts,
474 * so that sv_free() won't fail on them.
483 array = HvARRAY(strtab);
487 warn("Unbalanced string table refcount: (%d) for \"%s\"",
488 HeVAL(hent) - Nullsv, HeKEY(hent));
489 HeVAL(hent) = Nullsv;
499 SvREFCNT_dec(strtab);
502 warn("Scalars leaked: %ld\n", (long)sv_count);
506 /* No SVs have survived, need to clean out */
510 Safefree(origfilename);
512 hints = 0; /* Reset hints. Should hints be per-interpreter ? */
514 DEBUG_P(debprofdump());
516 MUTEX_DESTROY(&sv_mutex);
517 MUTEX_DESTROY(&eval_mutex);
518 COND_DESTROY(&eval_cond);
520 /* As the penultimate thing, free the non-arena SV for thrsv */
521 Safefree(SvPVX(thrsv));
522 Safefree(SvANY(thrsv));
525 #endif /* USE_THREADS */
527 /* As the absolutely last thing, free the non-arena SV for mess() */
530 /* we know that type >= SVt_PV */
532 Safefree(SvPVX(mess_sv));
533 Safefree(SvANY(mess_sv));
540 perl_free(PerlInterpreter *sv_interp)
542 if (!(curinterp = sv_interp))
548 perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env)
553 char *scriptname = NULL;
554 VOL bool dosearch = FALSE;
562 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
565 croak("suidperl is no longer needed since the kernel can now execute\n\
566 setuid perl scripts securely.\n");
570 if (!(curinterp = sv_interp))
573 #if defined(NeXT) && defined(__DYNAMIC__)
574 _dyld_lookup_and_bind
575 ("__environ", (unsigned long *) &environ_pointer, NULL);
580 #ifndef VMS /* VMS doesn't have environ array */
581 origenviron = environ;
587 /* Come here if running an undumped a.out. */
589 origfilename = savepv(argv[0]);
591 cxstack_ix = -1; /* start label stack again */
593 init_postdump_symbols(argc,argv,env);
598 curpad = AvARRAY(comppad);
603 SvREFCNT_dec(main_cv);
607 oldscope = scopestack_ix;
615 /* my_exit() was called */
616 while (scopestack_ix > oldscope)
621 call_list(oldscope, endav);
623 return STATUS_NATIVE_EXPORT;
626 PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
630 sv_setpvn(linestr,"",0);
631 sv = newSVpv("",0); /* first used for -I flags */
635 for (argc--,argv++; argc > 0; argc--,argv++) {
636 if (argv[0][0] != '-' || !argv[0][1])
640 validarg = " PHOOEY ";
665 if (s = moreswitches(s))
675 if (euid != uid || egid != gid)
676 croak("No -e allowed in setuid scripts");
678 e_tmpname = savepv(TMPPATH);
680 e_tmpfd = PerlLIO_mkstemp(e_tmpname);
683 croak("Can't mkstemp() temporary file \"%s\"", e_tmpname);
684 e_fp = PerlIO_fdopen(e_tmpfd,"w");
685 #else /* use mktemp() */
686 (void)PerlLIO_mktemp(e_tmpname);
688 croak("Can't mktemp() temporary file \"%s\"", e_tmpname);
689 e_fp = PerlIO_open(e_tmpname,"w");
690 #endif /* HAS_MKSTEMP */
692 croak("Cannot open temporary file \"%s\"", e_tmpname);
697 PerlIO_puts(e_fp,argv[1]);
701 croak("No code specified for -e");
702 (void)PerlIO_putc(e_fp,'\n');
704 case 'I': /* -I handled both here and in moreswitches() */
706 if (!*++s && (s=argv[1]) != Nullch) {
709 while (s && isSPACE(*s))
713 for (e = s; *e && !isSPACE(*e); e++) ;
720 } /* XXX else croak? */
734 preambleav = newAV();
735 av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
737 Sv = newSVpv("print myconfig();",0);
739 sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
741 sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
743 #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY)
744 sv_catpv(Sv,"\" Compile-time options:");
746 sv_catpv(Sv," DEBUGGING");
749 sv_catpv(Sv," NO_EMBED");
752 sv_catpv(Sv," MULTIPLICITY");
754 sv_catpv(Sv,"\\n\",");
756 #if defined(LOCAL_PATCH_COUNT)
757 if (LOCAL_PATCH_COUNT > 0) {
759 sv_catpv(Sv,"\" Locally applied patches:\\n\",");
760 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
762 sv_catpvf(Sv,"\" \\t%s\\n\",",localpatches[i]);
766 sv_catpvf(Sv,"\" Built under %s\\n\"",OSNAME);
769 sv_catpvf(Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
771 sv_catpvf(Sv,",\" Compiled on %s\\n\"",__DATE__);
776 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
777 print \" \\%ENV:\\n @env\\n\" if @env; \
778 print \" \\@INC:\\n @INC\\n\";");
781 Sv = newSVpv("config_vars(qw(",0);
786 av_push(preambleav, Sv);
787 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
798 if (!*++s || isSPACE(*s)) {
802 /* catch use of gnu style long options */
803 if (strEQ(s, "version")) {
807 if (strEQ(s, "help")) {
814 croak("Unrecognized switch: -%s (-h will show valid options)",s);
819 if (!tainting && (s = PerlEnv_getenv("PERL5OPT"))) {
830 if (!strchr("DIMUdmw", *s))
831 croak("Illegal switch in PERL5OPT: -%c", *s);
837 scriptname = argv[0];
839 if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp)) {
841 warn("Did you forget to compile with -DMULTIPLICITY?");
843 croak("Can't write to temp file for -e: %s", Strerror(errno));
847 scriptname = e_tmpname;
849 else if (scriptname == Nullch) {
851 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
859 open_script(scriptname,dosearch,sv);
861 validate_suid(validarg, scriptname);
866 main_cv = compcv = (CV*)NEWSV(1104,0);
867 sv_upgrade((SV *)compcv, SVt_PVCV);
871 av_push(comppad, Nullsv);
872 curpad = AvARRAY(comppad);
873 comppad_name = newAV();
874 comppad_name_fill = 0;
875 min_intro_pending = 0;
878 av_store(comppad_name, 0, newSVpv("@_", 2));
879 curpad[0] = (SV*)newAV();
880 SvPADMY_on(curpad[0]); /* XXX Needed? */
882 New(666, CvMUTEXP(compcv), 1, perl_mutex);
883 MUTEX_INIT(CvMUTEXP(compcv));
884 #endif /* USE_THREADS */
886 comppadlist = newAV();
887 AvREAL_off(comppadlist);
888 av_store(comppadlist, 0, (SV*)comppad_name);
889 av_store(comppadlist, 1, (SV*)comppad);
890 CvPADLIST(compcv) = comppadlist;
892 boot_core_UNIVERSAL();
894 (*xsinit)(); /* in case linked C routines want magical variables */
895 #if defined(VMS) || defined(WIN32) || defined(DJGPP)
899 init_predump_symbols();
901 init_postdump_symbols(argc,argv,env);
905 /* now parse the script */
907 SETERRNO(0,SS$_NORMAL);
909 if (yyparse() || error_count) {
911 croak("%s had compilation errors.\n", origfilename);
913 croak("Execution of %s aborted due to compilation errors.\n",
917 curcop->cop_line = 0;
921 (void)UNLINK(e_tmpname);
927 /* now that script is parsed, we can modify record separator */
929 rs = SvREFCNT_inc(nrs);
930 sv_setsv(perl_get_sv("/", TRUE), rs);
941 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
942 dump_mstats("after compilation:");
952 perl_run(PerlInterpreter *sv_interp)
959 if (!(curinterp = sv_interp))
962 oldscope = scopestack_ix;
967 cxstack_ix = -1; /* start context stack again */
970 /* my_exit() was called */
971 while (scopestack_ix > oldscope)
976 call_list(oldscope, endav);
978 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
979 dump_mstats("after execution: ");
982 return STATUS_NATIVE_EXPORT;
985 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
990 POPSTACK_TO(mainstack);
994 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
995 sawampersand ? "Enabling" : "Omitting"));
999 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1001 DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n",
1002 (unsigned long) thr));
1003 #endif /* USE_THREADS */
1006 PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename);
1009 if (PERLDB_SINGLE && DBsingle)
1010 sv_setiv(DBsingle, 1);
1012 call_list(oldscope, initav);
1022 else if (main_start) {
1023 CvDEPTH(main_cv) = 1;
1034 perl_get_sv(char *name, I32 create)
1038 if (name[1] == '\0' && !isALPHA(name[0])) {
1039 PADOFFSET tmp = find_threadsv(name);
1040 if (tmp != NOT_IN_PAD) {
1042 return THREADSV(tmp);
1045 #endif /* USE_THREADS */
1046 gv = gv_fetchpv(name, create, SVt_PV);
1053 perl_get_av(char *name, I32 create)
1055 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1064 perl_get_hv(char *name, I32 create)
1066 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1075 perl_get_cv(char *name, I32 create)
1077 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1078 if (create && !GvCVu(gv))
1079 return newSUB(start_subparse(FALSE, 0),
1080 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1088 /* Be sure to refetch the stack pointer after calling these routines. */
1091 perl_call_argv(char *sub_name, I32 flags, register char **argv)
1093 /* See G_* flags in cop.h */
1094 /* null terminated arg list */
1101 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1106 return perl_call_pv(sub_name, flags);
1110 perl_call_pv(char *sub_name, I32 flags)
1111 /* name of the subroutine */
1112 /* See G_* flags in cop.h */
1114 return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags);
1118 perl_call_method(char *methname, I32 flags)
1119 /* name of the subroutine */
1120 /* See G_* flags in cop.h */
1126 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1129 return perl_call_sv(*stack_sp--, flags);
1132 /* May be called with any of a CV, a GV, or an SV containing the name. */
1134 perl_call_sv(SV *sv, I32 flags)
1136 /* See G_* flags in cop.h */
1139 LOGOP myop; /* fake syntax tree node */
1144 bool oldcatch = CATCH_GET;
1149 if (flags & G_DISCARD) {
1154 Zero(&myop, 1, LOGOP);
1155 myop.op_next = Nullop;
1156 if (!(flags & G_NOARGS))
1157 myop.op_flags |= OPf_STACKED;
1158 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1159 (flags & G_ARRAY) ? OPf_WANT_LIST :
1164 EXTEND(stack_sp, 1);
1167 oldscope = scopestack_ix;
1169 if (PERLDB_SUB && curstash != debstash
1170 /* Handle first BEGIN of -d. */
1171 && (DBcv || (DBcv = GvCV(DBsub)))
1172 /* Try harder, since this may have been a sighandler, thus
1173 * curstash may be meaningless. */
1174 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash))
1175 op->op_private |= OPpENTERSUB_DB;
1177 if (flags & G_EVAL) {
1178 cLOGOP->op_other = op;
1180 /* we're trying to emulate pp_entertry() here */
1182 register PERL_CONTEXT *cx;
1183 I32 gimme = GIMME_V;
1188 push_return(op->op_next);
1189 PUSHBLOCK(cx, CXt_EVAL, stack_sp);
1191 eval_root = op; /* Only needed so that goto works right. */
1194 if (flags & G_KEEPERR)
1209 /* my_exit() was called */
1210 curstash = defstash;
1214 croak("Callback called exit");
1223 stack_sp = stack_base + oldmark;
1224 if (flags & G_ARRAY)
1228 *++stack_sp = &sv_undef;
1236 if (op == (OP*)&myop)
1237 op = pp_entersub(ARGS);
1240 retval = stack_sp - (stack_base + oldmark);
1241 if ((flags & G_EVAL) && !(flags & G_KEEPERR))
1245 if (flags & G_EVAL) {
1246 if (scopestack_ix > oldscope) {
1250 register PERL_CONTEXT *cx;
1262 CATCH_SET(oldcatch);
1264 if (flags & G_DISCARD) {
1265 stack_sp = stack_base + oldmark;
1274 /* Eval a string. The G_EVAL flag is always assumed. */
1277 perl_eval_sv(SV *sv, I32 flags)
1279 /* See G_* flags in cop.h */
1282 UNOP myop; /* fake syntax tree node */
1283 I32 oldmark = SP - stack_base;
1290 if (flags & G_DISCARD) {
1298 EXTEND(stack_sp, 1);
1300 oldscope = scopestack_ix;
1302 if (!(flags & G_NOARGS))
1303 myop.op_flags = OPf_STACKED;
1304 myop.op_next = Nullop;
1305 myop.op_type = OP_ENTEREVAL;
1306 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1307 (flags & G_ARRAY) ? OPf_WANT_LIST :
1309 if (flags & G_KEEPERR)
1310 myop.op_flags |= OPf_SPECIAL;
1320 /* my_exit() was called */
1321 curstash = defstash;
1325 croak("Callback called exit");
1334 stack_sp = stack_base + oldmark;
1335 if (flags & G_ARRAY)
1339 *++stack_sp = &sv_undef;
1344 if (op == (OP*)&myop)
1345 op = pp_entereval(ARGS);
1348 retval = stack_sp - (stack_base + oldmark);
1349 if (!(flags & G_KEEPERR))
1354 if (flags & G_DISCARD) {
1355 stack_sp = stack_base + oldmark;
1365 perl_eval_pv(char *p, I32 croak_on_error)
1368 SV* sv = newSVpv(p, 0);
1371 perl_eval_sv(sv, G_SCALAR);
1378 if (croak_on_error && SvTRUE(ERRSV))
1379 croak(SvPVx(ERRSV, na));
1384 /* Require a module. */
1387 perl_require_pv(char *pv)
1389 SV* sv = sv_newmortal();
1390 sv_setpv(sv, "require '");
1393 perl_eval_sv(sv, G_DISCARD);
1397 magicname(char *sym, char *name, I32 namlen)
1401 if (gv = gv_fetchpv(sym,TRUE, SVt_PV))
1402 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1406 usage(char *name) /* XXX move this out into a module ? */
1409 /* This message really ought to be max 23 lines.
1410 * Removed -h because the user already knows that opton. Others? */
1412 static char *usage[] = {
1413 "-0[octal] specify record separator (\\0, if no argument)",
1414 "-a autosplit mode with -n or -p (splits $_ into @F)",
1415 "-c check syntax only (runs BEGIN and END blocks)",
1416 "-d[:debugger] run scripts under debugger",
1417 "-D[number/list] set debugging flags (argument is a bit mask or flags)",
1418 "-e 'command' one line of script. Several -e's allowed. Omit [programfile].",
1419 "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.",
1420 "-i[extension] edit <> files in place (make backup if extension supplied)",
1421 "-Idirectory specify @INC/#include directory (may be used more than once)",
1422 "-l[octal] enable line ending processing, specifies line terminator",
1423 "-[mM][-]module.. executes `use/no module...' before executing your script.",
1424 "-n assume 'while (<>) { ... }' loop around your script",
1425 "-p assume loop like -n but print line also like sed",
1426 "-P run script through C preprocessor before compilation",
1427 "-s enable some switch parsing for switches after script name",
1428 "-S look for the script using PATH environment variable",
1429 "-T turn on tainting checks",
1430 "-u dump core after parsing script",
1431 "-U allow unsafe operations",
1432 "-v print version number and patchlevel of perl",
1433 "-V[:variable] print perl configuration information",
1434 "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.",
1435 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1441 printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
1443 printf("\n %s", *p++);
1446 /* This routine handles any switches that can be given during run */
1449 moreswitches(char *s)
1458 rschar = scan_oct(s, 4, &numlen);
1460 if (rschar & ~((U8)~0))
1462 else if (!rschar && numlen >= 2)
1463 nrs = newSVpv("", 0);
1466 nrs = newSVpv(&ch, 1);
1472 splitstr = savepv(s + 1);
1486 if (*s == ':' || *s == '=') {
1487 my_setenv("PERL5DB", form("use Devel::%s;", ++s));
1491 perldb = PERLDB_ALL;
1498 if (isALPHA(s[1])) {
1499 static char debopts[] = "psltocPmfrxuLHXD";
1502 for (s++; *s && (d = strchr(debopts,*s)); s++)
1503 debug |= 1 << (d - debopts);
1507 for (s++; isDIGIT(*s); s++) ;
1509 debug |= 0x80000000;
1511 warn("Recompile perl with -DDEBUGGING to use -D switch\n");
1512 for (s++; isALNUM(*s); s++) ;
1522 inplace = savepv(s+1);
1524 for (s = inplace; *s && !isSPACE(*s); s++) ;
1528 case 'I': /* -I handled both here and in parse_perl() */
1531 while (*s && isSPACE(*s))
1535 for (e = s; *e && !isSPACE(*e); e++) ;
1536 p = savepvn(s, e-s);
1542 croak("No space allowed after -I");
1552 *ors = scan_oct(s, 3 + (*s == '0'), &numlen);
1562 ors = SvPV(nrs, orslen);
1563 ors = savepvn(ors, orslen);
1567 forbid_setid("-M"); /* XXX ? */
1570 forbid_setid("-m"); /* XXX ? */
1575 /* -M-foo == 'no foo' */
1576 if (*s == '-') { use = "no "; ++s; }
1577 sv = newSVpv(use,0);
1579 /* We allow -M'Module qw(Foo Bar)' */
1580 while(isALNUM(*s) || *s==':') ++s;
1582 sv_catpv(sv, start);
1583 if (*(start-1) == 'm') {
1585 croak("Can't use '%c' after -mname", *s);
1586 sv_catpv( sv, " ()");
1589 sv_catpvn(sv, start, s-start);
1590 sv_catpv(sv, " split(/,/,q{");
1595 if (preambleav == NULL)
1596 preambleav = newAV();
1597 av_push(preambleav, sv);
1600 croak("No space allowed after -%c", *(s-1));
1617 croak("Too late for \"-T\" option");
1629 #if defined(SUBVERSION) && SUBVERSION > 0
1630 printf("\nThis is perl, version 5.%03d_%02d built for %s",
1631 PATCHLEVEL, SUBVERSION, ARCHNAME);
1633 printf("\nThis is perl, version %s built for %s",
1634 patchlevel, ARCHNAME);
1636 #if defined(LOCAL_PATCH_COUNT)
1637 if (LOCAL_PATCH_COUNT > 0)
1638 printf("\n(with %d registered patch%s, see perl -V for more detail)",
1639 LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : "");
1642 printf("\n\nCopyright 1987-1998, Larry Wall\n");
1644 printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
1647 printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
1648 printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n");
1651 printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
1652 "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n");
1655 printf("atariST series port, ++jrb bammi@cadence.com\n");
1658 Perl may be copied only under the terms of either the Artistic License or the\n\
1659 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n");
1667 if (s[1] == '-') /* Additional switches on #! line. */
1678 #ifdef ALTERNATE_SHEBANG
1679 case 'S': /* OS/2 needs -S on "extproc" line. */
1687 croak("Can't emulate -%.1s on #! line",s);
1692 /* compliments of Tom Christiansen */
1694 /* unexec() can be found in the Gnu emacs distribution */
1705 prog = newSVpv(BIN_EXP);
1706 sv_catpv(prog, "/perl");
1707 file = newSVpv(origfilename);
1708 sv_catpv(file, ".perldump");
1710 status = unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
1712 PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n",
1713 SvPVX(prog), SvPVX(file));
1714 PerlProc_exit(status);
1717 # include <lib$routines.h>
1718 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
1720 ABORT(); /* for use with undump */
1726 init_main_stash(void)
1731 /* Note that strtab is a rather special HV. Assumptions are made
1732 about not iterating on it, and not adding tie magic to it.
1733 It is properly deallocated in perl_destruct() */
1735 HvSHAREKEYS_off(strtab); /* mandatory */
1736 Newz(506,((XPVHV*)SvANY(strtab))->xhv_array,
1737 sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char);
1739 curstash = defstash = newHV();
1740 curstname = newSVpv("main",4);
1741 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
1742 SvREFCNT_dec(GvHV(gv));
1743 GvHV(gv) = (HV*)SvREFCNT_inc(defstash);
1745 HvNAME(defstash) = savepv("main");
1746 incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
1748 defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
1749 errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
1751 (void)form("%240s",""); /* Preallocate temp - for immediate signals. */
1752 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
1753 sv_setpvn(ERRSV, "", 0);
1754 curstash = defstash;
1755 compiling.cop_stash = defstash;
1756 debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
1757 globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
1758 /* We must init $/ before switches are processed. */
1759 sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
1763 open_script(char *scriptname, bool dosearch, SV *sv)
1766 char *xfound = Nullch;
1767 char *xfailed = Nullch;
1771 #if defined(DOSISH) && !defined(OS2) && !defined(atarist)
1772 # define SEARCH_EXTS ".bat", ".cmd", NULL
1773 # define MAX_EXT_LEN 4
1776 # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
1777 # define MAX_EXT_LEN 4
1780 # define SEARCH_EXTS ".pl", ".com", NULL
1781 # define MAX_EXT_LEN 4
1783 /* additional extensions to try in each dir if scriptname not found */
1785 char *ext[] = { SEARCH_EXTS };
1786 int extidx = 0, i = 0;
1787 char *curext = Nullch;
1789 # define MAX_EXT_LEN 0
1793 * If dosearch is true and if scriptname does not contain path
1794 * delimiters, search the PATH for scriptname.
1796 * If SEARCH_EXTS is also defined, will look for each
1797 * scriptname{SEARCH_EXTS} whenever scriptname is not found
1798 * while searching the PATH.
1800 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
1801 * proceeds as follows:
1802 * If DOSISH or VMSISH:
1803 * + look for ./scriptname{,.foo,.bar}
1804 * + search the PATH for scriptname{,.foo,.bar}
1807 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
1808 * this will not look in '.' if it's not in the PATH)
1812 # ifdef ALWAYS_DEFTYPES
1813 len = strlen(scriptname);
1814 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
1815 int hasdir, idx = 0, deftypes = 1;
1818 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
1821 int hasdir, idx = 0, deftypes = 1;
1824 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
1826 /* The first time through, just add SEARCH_EXTS to whatever we
1827 * already have, so we can check for default file types. */
1829 (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) )
1835 if ((strlen(tokenbuf) + strlen(scriptname)
1836 + MAX_EXT_LEN) >= sizeof tokenbuf)
1837 continue; /* don't search dir with too-long name */
1838 strcat(tokenbuf, scriptname);
1842 if (strEQ(scriptname, "-"))
1844 if (dosearch) { /* Look in '.' first. */
1845 char *cur = scriptname;
1847 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
1849 if (strEQ(ext[i++],curext)) {
1850 extidx = -1; /* already has an ext */
1855 DEBUG_p(PerlIO_printf(Perl_debug_log,
1856 "Looking for %s\n",cur));
1857 if (Stat(cur,&statbuf) >= 0) {
1865 if (cur == scriptname) {
1866 len = strlen(scriptname);
1867 if (len+MAX_EXT_LEN+1 >= sizeof(tokenbuf))
1869 cur = strcpy(tokenbuf, scriptname);
1871 } while (extidx >= 0 && ext[extidx] /* try an extension? */
1872 && strcpy(tokenbuf+len, ext[extidx++]));
1877 if (dosearch && !strchr(scriptname, '/')
1879 && !strchr(scriptname, '\\')
1881 && (s = PerlEnv_getenv("PATH"))) {
1884 bufend = s + strlen(s);
1885 while (s < bufend) {
1886 #if defined(atarist) || defined(DOSISH)
1891 && *s != ';'; len++, s++) {
1892 if (len < sizeof tokenbuf)
1895 if (len < sizeof tokenbuf)
1896 tokenbuf[len] = '\0';
1897 #else /* ! (atarist || DOSISH) */
1898 s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf, s, bufend,
1901 #endif /* ! (atarist || DOSISH) */
1904 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tokenbuf)
1905 continue; /* don't search dir with too-long name */
1907 #if defined(atarist) || defined(DOSISH)
1908 && tokenbuf[len - 1] != '/'
1909 && tokenbuf[len - 1] != '\\'
1912 tokenbuf[len++] = '/';
1913 if (len == 2 && tokenbuf[0] == '.')
1915 (void)strcpy(tokenbuf + len, scriptname);
1919 len = strlen(tokenbuf);
1920 if (extidx > 0) /* reset after previous loop */
1924 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf));
1925 retval = Stat(tokenbuf,&statbuf);
1927 } while ( retval < 0 /* not there */
1928 && extidx>=0 && ext[extidx] /* try an extension? */
1929 && strcpy(tokenbuf+len, ext[extidx++])
1934 if (S_ISREG(statbuf.st_mode)
1935 && cando(S_IRUSR,TRUE,&statbuf)
1937 && cando(S_IXUSR,TRUE,&statbuf)
1941 xfound = tokenbuf; /* bingo! */
1945 xfailed = savepv(tokenbuf);
1948 if (!xfound && !seen_dot && !xfailed && (Stat(scriptname,&statbuf) < 0))
1950 seen_dot = 1; /* Disable message. */
1952 croak("Can't %s %s%s%s",
1953 (xfailed ? "execute" : "find"),
1954 (xfailed ? xfailed : scriptname),
1955 (xfailed ? "" : " on PATH"),
1956 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
1959 scriptname = xfound;
1962 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
1963 char *s = scriptname + 8;
1972 origfilename = savepv(e_tmpname ? "-e" : scriptname);
1973 curcop->cop_filegv = gv_fetchfile(origfilename);
1974 if (strEQ(origfilename,"-"))
1976 if (fdscript >= 0) {
1977 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
1978 #if defined(HAS_FCNTL) && defined(F_SETFD)
1980 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
1983 else if (preprocess) {
1984 char *cpp_cfg = CPPSTDIN;
1985 SV *cpp = NEWSV(0,0);
1986 SV *cmd = NEWSV(0,0);
1988 if (strEQ(cpp_cfg, "cppstdin"))
1989 sv_catpvf(cpp, "%s/", BIN_EXP);
1990 sv_catpv(cpp, cpp_cfg);
1993 sv_catpv(sv,PRIVLIB_EXP);
1997 sed %s -e \"/^[^#]/b\" \
1998 -e \"/^#[ ]*include[ ]/b\" \
1999 -e \"/^#[ ]*define[ ]/b\" \
2000 -e \"/^#[ ]*if[ ]/b\" \
2001 -e \"/^#[ ]*ifdef[ ]/b\" \
2002 -e \"/^#[ ]*ifndef[ ]/b\" \
2003 -e \"/^#[ ]*else/b\" \
2004 -e \"/^#[ ]*elif[ ]/b\" \
2005 -e \"/^#[ ]*undef[ ]/b\" \
2006 -e \"/^#[ ]*endif/b\" \
2009 (doextract ? "-e \"1,/^#/d\n\"" : ""),
2012 %s %s -e '/^[^#]/b' \
2013 -e '/^#[ ]*include[ ]/b' \
2014 -e '/^#[ ]*define[ ]/b' \
2015 -e '/^#[ ]*if[ ]/b' \
2016 -e '/^#[ ]*ifdef[ ]/b' \
2017 -e '/^#[ ]*ifndef[ ]/b' \
2018 -e '/^#[ ]*else/b' \
2019 -e '/^#[ ]*elif[ ]/b' \
2020 -e '/^#[ ]*undef[ ]/b' \
2021 -e '/^#[ ]*endif/b' \
2029 (doextract ? "-e '1,/^#/d\n'" : ""),
2031 scriptname, cpp, sv, CPPMINUS);
2033 #ifdef IAMSUID /* actually, this is caught earlier */
2034 if (euid != uid && !euid) { /* if running suidperl */
2036 (void)seteuid(uid); /* musn't stay setuid root */
2039 (void)setreuid((Uid_t)-1, uid);
2041 #ifdef HAS_SETRESUID
2042 (void)setresuid((Uid_t)-1, uid, (Uid_t)-1);
2048 if (geteuid() != uid)
2049 croak("Can't do seteuid!\n");
2051 #endif /* IAMSUID */
2052 rsfp = PerlProc_popen(SvPVX(cmd), "r");
2056 else if (!*scriptname) {
2057 forbid_setid("program input from stdin");
2058 rsfp = PerlIO_stdin();
2061 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2062 #if defined(HAS_FCNTL) && defined(F_SETFD)
2064 fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
2072 #ifndef IAMSUID /* in case script is not readable before setuid */
2073 if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 &&
2074 statbuf.st_mode & (S_ISUID|S_ISGID)) {
2076 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
2077 croak("Can't do setuid\n");
2081 croak("Can't open perl script \"%s\": %s\n",
2082 SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno));
2087 validate_suid(char *validarg, char *scriptname)
2091 /* do we need to emulate setuid on scripts? */
2093 /* This code is for those BSD systems that have setuid #! scripts disabled
2094 * in the kernel because of a security problem. Merely defining DOSUID
2095 * in perl will not fix that problem, but if you have disabled setuid
2096 * scripts in the kernel, this will attempt to emulate setuid and setgid
2097 * on scripts that have those now-otherwise-useless bits set. The setuid
2098 * root version must be called suidperl or sperlN.NNN. If regular perl
2099 * discovers that it has opened a setuid script, it calls suidperl with
2100 * the same argv that it had. If suidperl finds that the script it has
2101 * just opened is NOT setuid root, it sets the effective uid back to the
2102 * uid. We don't just make perl setuid root because that loses the
2103 * effective uid we had before invoking perl, if it was different from the
2106 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2107 * be defined in suidperl only. suidperl must be setuid root. The
2108 * Configure script will set this up for you if you want it.
2115 if (PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
2116 croak("Can't stat script \"%s\"",origfilename);
2117 if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) {
2121 #ifndef HAS_SETREUID
2122 /* On this access check to make sure the directories are readable,
2123 * there is actually a small window that the user could use to make
2124 * filename point to an accessible directory. So there is a faint
2125 * chance that someone could execute a setuid script down in a
2126 * non-accessible directory. I don't know what to do about that.
2127 * But I don't think it's too important. The manual lies when
2128 * it says access() is useful in setuid programs.
2130 if (PerlLIO_access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/
2131 croak("Permission denied");
2133 /* If we can swap euid and uid, then we can determine access rights
2134 * with a simple stat of the file, and then compare device and
2135 * inode to make sure we did stat() on the same file we opened.
2136 * Then we just have to make sure he or she can execute it.
2139 struct stat tmpstatbuf;
2143 setreuid(euid,uid) < 0
2146 setresuid(euid,uid,(Uid_t)-1) < 0
2149 || getuid() != euid || geteuid() != uid)
2150 croak("Can't swap uid and euid"); /* really paranoid */
2151 if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0)
2152 croak("Permission denied"); /* testing full pathname here */
2153 if (tmpstatbuf.st_dev != statbuf.st_dev ||
2154 tmpstatbuf.st_ino != statbuf.st_ino) {
2155 (void)PerlIO_close(rsfp);
2156 if (rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2158 "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2159 (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n",
2160 (long)uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2161 (long)statbuf.st_dev, (long)statbuf.st_ino,
2162 SvPVX(GvSV(curcop->cop_filegv)),
2163 (long)statbuf.st_uid, (long)statbuf.st_gid);
2164 (void)PerlProc_pclose(rsfp);
2166 croak("Permission denied\n");
2170 setreuid(uid,euid) < 0
2172 # if defined(HAS_SETRESUID)
2173 setresuid(uid,euid,(Uid_t)-1) < 0
2176 || getuid() != uid || geteuid() != euid)
2177 croak("Can't reswap uid and euid");
2178 if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */
2179 croak("Permission denied\n");
2181 #endif /* HAS_SETREUID */
2182 #endif /* IAMSUID */
2184 if (!S_ISREG(statbuf.st_mode))
2185 croak("Permission denied");
2186 if (statbuf.st_mode & S_IWOTH)
2187 croak("Setuid/gid script is writable by world");
2188 doswitches = FALSE; /* -s is insecure in suid */
2190 if (sv_gets(linestr, rsfp, 0) == Nullch ||
2191 strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */
2192 croak("No #! line");
2193 s = SvPV(linestr,na)+2;
2195 while (!isSPACE(*s)) s++;
2196 for (s2 = s; (s2 > SvPV(linestr,na)+2 &&
2197 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2198 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2199 croak("Not a perl script");
2200 while (*s == ' ' || *s == '\t') s++;
2202 * #! arg must be what we saw above. They can invoke it by
2203 * mentioning suidperl explicitly, but they may not add any strange
2204 * arguments beyond what #! says if they do invoke suidperl that way.
2206 len = strlen(validarg);
2207 if (strEQ(validarg," PHOOEY ") ||
2208 strnNE(s,validarg,len) || !isSPACE(s[len]))
2209 croak("Args must match #! line");
2212 if (euid != uid && (statbuf.st_mode & S_ISUID) &&
2213 euid == statbuf.st_uid)
2215 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2216 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2217 #endif /* IAMSUID */
2219 if (euid) { /* oops, we're not the setuid root perl */
2220 (void)PerlIO_close(rsfp);
2223 PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv);
2225 croak("Can't do setuid\n");
2228 if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) {
2230 (void)setegid(statbuf.st_gid);
2233 (void)setregid((Gid_t)-1,statbuf.st_gid);
2235 #ifdef HAS_SETRESGID
2236 (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1);
2238 setgid(statbuf.st_gid);
2242 if (getegid() != statbuf.st_gid)
2243 croak("Can't do setegid!\n");
2245 if (statbuf.st_mode & S_ISUID) {
2246 if (statbuf.st_uid != euid)
2248 (void)seteuid(statbuf.st_uid); /* all that for this */
2251 (void)setreuid((Uid_t)-1,statbuf.st_uid);
2253 #ifdef HAS_SETRESUID
2254 (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1);
2256 setuid(statbuf.st_uid);
2260 if (geteuid() != statbuf.st_uid)
2261 croak("Can't do seteuid!\n");
2263 else if (uid) { /* oops, mustn't run as root */
2265 (void)seteuid((Uid_t)uid);
2268 (void)setreuid((Uid_t)-1,(Uid_t)uid);
2270 #ifdef HAS_SETRESUID
2271 (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1);
2277 if (geteuid() != uid)
2278 croak("Can't do seteuid!\n");
2281 if (!cando(S_IXUSR,TRUE,&statbuf))
2282 croak("Permission denied\n"); /* they can't do this */
2285 else if (preprocess)
2286 croak("-P not allowed for setuid/setgid script\n");
2287 else if (fdscript >= 0)
2288 croak("fd script not allowed in suidperl\n");
2290 croak("Script is not setuid/setgid in suidperl\n");
2292 /* We absolutely must clear out any saved ids here, so we */
2293 /* exec the real perl, substituting fd script for scriptname. */
2294 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2295 PerlIO_rewind(rsfp);
2296 PerlLIO_lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */
2297 for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ;
2298 if (!origargv[which])
2299 croak("Permission denied");
2300 origargv[which] = savepv(form("/dev/fd/%d/%s",
2301 PerlIO_fileno(rsfp), origargv[which]));
2302 #if defined(HAS_FCNTL) && defined(F_SETFD)
2303 fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */
2305 PerlProc_execv(form("%s/perl%s", BIN_EXP, patchlevel), origargv); /* try again */
2306 croak("Can't do setuid\n");
2307 #endif /* IAMSUID */
2309 if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */
2310 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2312 PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
2313 if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
2315 (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
2318 croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2319 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2320 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2321 /* not set-id, must be wrapped */
2327 find_beginning(void)
2329 register char *s, *s2;
2331 /* skip forward in input to the real script? */
2335 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch)
2336 croak("No Perl script found in input\n");
2337 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2338 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
2340 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2342 while (*s == ' ' || *s == '\t') s++;
2344 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2345 if (strnEQ(s2-4,"perl",4))
2347 while (s = moreswitches(s)) ;
2349 if (cddir && PerlDir_chdir(cddir) < 0)
2350 croak("Can't chdir to %s",cddir);
2358 uid = (int)getuid();
2359 euid = (int)geteuid();
2360 gid = (int)getgid();
2361 egid = (int)getegid();
2366 tainting |= (uid && (euid != uid || egid != gid));
2370 forbid_setid(char *s)
2373 croak("No %s allowed while running setuid", s);
2375 croak("No %s allowed while running setgid", s);
2382 curstash = debstash;
2383 dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
2385 DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
2386 DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
2387 DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
2388 DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
2389 sv_setiv(DBsingle, 0);
2390 DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
2391 sv_setiv(DBtrace, 0);
2392 DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
2393 sv_setiv(DBsignal, 0);
2394 curstash = defstash;
2397 #ifndef STRESS_REALLOC
2398 #define REASONABLE(size) (size)
2400 #define REASONABLE(size) (1) /* unreasonable */
2404 init_stacks(ARGSproto)
2406 /* start with 128-item stack and 8K cxstack */
2407 curstackinfo = new_stackinfo(REASONABLE(128),
2408 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
2409 curstackinfo->si_type = SI_MAIN;
2410 curstack = curstackinfo->si_stack;
2411 mainstack = curstack; /* remember in case we switch stacks */
2413 stack_base = AvARRAY(curstack);
2414 stack_sp = stack_base;
2415 stack_max = stack_base + AvMAX(curstack);
2417 New(50,tmps_stack,REASONABLE(128),SV*);
2420 tmps_max = REASONABLE(128);
2423 * The following stacks almost certainly should be per-interpreter,
2424 * but for now they're not. XXX
2428 markstack_ptr = markstack;
2430 New(54,markstack,REASONABLE(32),I32);
2431 markstack_ptr = markstack;
2432 markstack_max = markstack + REASONABLE(32);
2440 New(54,scopestack,REASONABLE(32),I32);
2442 scopestack_max = REASONABLE(32);
2448 New(54,savestack,REASONABLE(128),ANY);
2450 savestack_max = REASONABLE(128);
2456 New(54,retstack,REASONABLE(16),OP*);
2458 retstack_max = REASONABLE(16);
2468 while (curstackinfo->si_next)
2469 curstackinfo = curstackinfo->si_next;
2470 while (curstackinfo) {
2471 PERL_SI *p = curstackinfo->si_prev;
2472 SvREFCNT_dec(curstackinfo->si_stack);
2473 Safefree(curstackinfo->si_cxstack);
2474 Safefree(curstackinfo);
2477 Safefree(tmps_stack);
2484 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
2493 subname = newSVpv("main",4);
2497 init_predump_symbols(void)
2503 sv_setpvn(perl_get_sv("\"", TRUE), " ", 1);
2504 stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
2505 GvMULTI_on(stdingv);
2506 IoIFP(GvIOp(stdingv)) = PerlIO_stdin();
2507 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
2509 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv));
2511 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
2513 IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
2515 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
2517 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv));
2519 othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
2520 GvMULTI_on(othergv);
2521 IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
2522 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
2524 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
2526 statname = NEWSV(66,0); /* last filename we did stat on */
2529 osname = savepv(OSNAME);
2533 init_postdump_symbols(register int argc, register char **argv, register char **env)
2540 argc--,argv++; /* skip name of script */
2542 for (; argc > 0 && **argv == '-'; argc--,argv++) {
2545 if (argv[0][1] == '-') {
2549 if (s = strchr(argv[0], '=')) {
2551 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
2554 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
2557 toptarget = NEWSV(0,0);
2558 sv_upgrade(toptarget, SVt_PVFM);
2559 sv_setpvn(toptarget, "", 0);
2560 bodytarget = NEWSV(0,0);
2561 sv_upgrade(bodytarget, SVt_PVFM);
2562 sv_setpvn(bodytarget, "", 0);
2563 formtarget = bodytarget;
2566 if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
2567 sv_setpv(GvSV(tmpgv),origfilename);
2568 magicname("0", "0", 1);
2570 if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
2571 sv_setpv(GvSV(tmpgv),origargv[0]);
2572 if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
2574 (void)gv_AVadd(argvgv);
2575 av_clear(GvAVn(argvgv));
2576 for (; argc > 0; argc--,argv++) {
2577 av_push(GvAVn(argvgv),newSVpv(argv[0],0));
2580 if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
2584 hv_magic(hv, envgv, 'E');
2585 #ifndef VMS /* VMS doesn't have environ array */
2586 /* Note that if the supplied env parameter is actually a copy
2587 of the global environ then it may now point to free'd memory
2588 if the environment has been modified since. To avoid this
2589 problem we treat env==NULL as meaning 'use the default'
2594 environ[0] = Nullch;
2595 for (; *env; env++) {
2596 if (!(s = strchr(*env,'=')))
2599 #if defined(WIN32) || defined(MSDOS)
2602 sv = newSVpv(s--,0);
2603 (void)hv_store(hv, *env, s - *env, sv, 0);
2605 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
2606 /* Sins of the RTL. See note in my_setenv(). */
2607 (void)PerlEnv_putenv(savepv(*env));
2611 #ifdef DYNAMIC_ENV_FETCH
2612 HvNAME(hv) = savepv(ENV_HV_NAME);
2616 if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
2617 sv_setiv(GvSV(tmpgv), (IV)getpid());
2626 s = PerlEnv_getenv("PERL5LIB");
2630 incpush(PerlEnv_getenv("PERLLIB"), FALSE);
2632 /* Treat PERL5?LIB as a possible search list logical name -- the
2633 * "natural" VMS idiom for a Unix path string. We allow each
2634 * element to be a set of |-separated directories for compatibility.
2638 if (my_trnlnm("PERL5LIB",buf,0))
2639 do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
2641 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE);
2645 /* Use the ~-expanded versions of APPLLIB (undocumented),
2646 ARCHLIB PRIVLIB SITEARCH and SITELIB
2649 incpush(APPLLIB_EXP, FALSE);
2653 incpush(ARCHLIB_EXP, FALSE);
2656 #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
2658 incpush(PRIVLIB_EXP, FALSE);
2661 incpush(SITEARCH_EXP, FALSE);
2664 incpush(SITELIB_EXP, FALSE);
2667 incpush(".", FALSE);
2671 # define PERLLIB_SEP ';'
2674 # define PERLLIB_SEP '|'
2676 # define PERLLIB_SEP ':'
2679 #ifndef PERLLIB_MANGLE
2680 # define PERLLIB_MANGLE(s,n) (s)
2684 incpush(char *p, int addsubdirs)
2686 SV *subdir = Nullsv;
2687 static char *archpat_auto;
2693 subdir = NEWSV(55,0);
2694 if (!archpat_auto) {
2695 STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel)
2696 + sizeof("//auto"));
2697 New(55, archpat_auto, len, char);
2698 sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel);
2700 for (len = sizeof(ARCHNAME) + 2;
2701 archpat_auto[len] != '\0' && archpat_auto[len] != '/'; len++)
2702 if (archpat_auto[len] == '.') archpat_auto[len] = '_';
2707 /* Break at all separators */
2709 SV *libdir = NEWSV(55,0);
2712 /* skip any consecutive separators */
2713 while ( *p == PERLLIB_SEP ) {
2714 /* Uncomment the next line for PATH semantics */
2715 /* av_push(GvAVn(incgv), newSVpv(".", 1)); */
2719 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
2720 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
2725 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
2726 p = Nullch; /* break out */
2730 * BEFORE pushing libdir onto @INC we may first push version- and
2731 * archname-specific sub-directories.
2734 struct stat tmpstatbuf;
2739 if ((unix = tounixspec_ts(SvPV(libdir,na),Nullch)) != Nullch) {
2741 while (unix[len-1] == '/') len--; /* Cosmetic */
2742 sv_usepvn(libdir,unix,len);
2745 PerlIO_printf(PerlIO_stderr(),
2746 "Failed to unixify @INC element \"%s\"\n",
2749 /* .../archname/version if -d .../archname/version/auto */
2750 sv_setsv(subdir, libdir);
2751 sv_catpv(subdir, archpat_auto);
2752 if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2753 S_ISDIR(tmpstatbuf.st_mode))
2754 av_push(GvAVn(incgv),
2755 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2757 /* .../archname if -d .../archname/auto */
2758 sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME),
2759 strlen(patchlevel) + 1, "", 0);
2760 if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
2761 S_ISDIR(tmpstatbuf.st_mode))
2762 av_push(GvAVn(incgv),
2763 newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto"));
2766 /* finally push this lib directory on the end of @INC */
2767 av_push(GvAVn(incgv), libdir);
2770 SvREFCNT_dec(subdir);
2774 static struct perl_thread *
2777 struct perl_thread *thr;
2780 Newz(53, thr, 1, struct perl_thread);
2781 curcop = &compiling;
2782 thr->cvcache = newHV();
2783 thr->threadsv = newAV();
2784 /* thr->threadsvp is set when find_threadsv is called */
2785 thr->specific = newAV();
2786 thr->errhv = newHV();
2787 thr->flags = THRf_R_JOINABLE;
2788 MUTEX_INIT(&thr->mutex);
2789 /* Handcraft thrsv similarly to mess_sv */
2790 New(53, thrsv, 1, SV);
2791 Newz(53, xpv, 1, XPV);
2792 SvFLAGS(thrsv) = SVt_PV;
2793 SvANY(thrsv) = (void*)xpv;
2794 SvREFCNT(thrsv) = 1 << 30; /* practically infinite */
2795 SvPVX(thrsv) = (char*)thr;
2796 SvCUR_set(thrsv, sizeof(thr));
2797 SvLEN_set(thrsv, sizeof(thr));
2798 *SvEND(thrsv) = '\0'; /* in the trailing_nul field */
2800 curcop = &compiling;
2803 MUTEX_LOCK(&threads_mutex);
2808 MUTEX_UNLOCK(&threads_mutex);
2810 #ifdef HAVE_THREAD_INTERN
2811 init_thread_intern(thr);
2814 #ifdef SET_THREAD_SELF
2815 SET_THREAD_SELF(thr);
2817 thr->self = pthread_self();
2818 #endif /* SET_THREAD_SELF */
2822 * These must come after the SET_THR because sv_setpvn does
2823 * SvTAINT and the taint fields require dTHR.
2825 toptarget = NEWSV(0,0);
2826 sv_upgrade(toptarget, SVt_PVFM);
2827 sv_setpvn(toptarget, "", 0);
2828 bodytarget = NEWSV(0,0);
2829 sv_upgrade(bodytarget, SVt_PVFM);
2830 sv_setpvn(bodytarget, "", 0);
2831 formtarget = bodytarget;
2832 thr->errsv = newSVpv("", 0);
2833 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
2836 #endif /* USE_THREADS */
2839 call_list(I32 oldscope, AV *list)
2842 line_t oldline = curcop->cop_line;
2847 while (AvFILL(list) >= 0) {
2848 CV *cv = (CV*)av_shift(list);
2857 perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
2858 (void)SvPV(atsv, len);
2861 curcop = &compiling;
2862 curcop->cop_line = oldline;
2863 if (list == beginav)
2864 sv_catpv(atsv, "BEGIN failed--compilation aborted");
2866 sv_catpv(atsv, "END failed--cleanup aborted");
2867 while (scopestack_ix > oldscope)
2869 croak("%s", SvPVX(atsv));
2877 /* my_exit() was called */
2878 while (scopestack_ix > oldscope)
2881 curstash = defstash;
2883 call_list(oldscope, endav);
2885 curcop = &compiling;
2886 curcop->cop_line = oldline;
2888 if (list == beginav)
2889 croak("BEGIN failed--compilation aborted");
2891 croak("END failed--cleanup aborted");
2897 PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
2902 curcop = &compiling;
2903 curcop->cop_line = oldline;
2916 DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
2917 thr, (unsigned long) status));
2918 #endif /* USE_THREADS */
2927 STATUS_NATIVE_SET(status);
2934 my_failure_exit(void)
2937 if (vaxc$errno & 1) {
2938 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
2939 STATUS_NATIVE_SET(44);
2942 if (!vaxc$errno && errno) /* unlikely */
2943 STATUS_NATIVE_SET(44);
2945 STATUS_NATIVE_SET(vaxc$errno);
2949 STATUS_POSIX_SET(errno);
2950 else if (STATUS_POSIX == 0)
2951 STATUS_POSIX_SET(255);
2960 register PERL_CONTEXT *cx;
2969 (void)UNLINK(e_tmpname);
2970 Safefree(e_tmpname);
2974 if (cxstack_ix >= 0) {