X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl.c;h=b2ffcc9b4bd69280a15bf63766a1e7bc69ae90b9;hb=82f1aded4f41f8d8402d4d027e6ffe4efb64895c;hp=6ea64ecdea6667cfaf91c8bd8d858a83d989c3ea;hpb=fe14fcc35f78a371a174a1d14256c2f35ae4262b;p=p5sagit%2Fp5-mst-13.2.git diff --git a/perl.c b/perl.c index 6ea64ec..b2ffcc9 100644 --- a/perl.c +++ b/perl.c @@ -1,23 +1,34 @@ -char rcsid[] = "$Header: perl.c,v 4.0 91/03/20 01:37:44 lwall Locked $\nPatch level: ###\n"; -/* - * Copyright (c) 1989, Larry Wall +/* perl.c + * + * Copyright (c) 1987-1998 Larry Wall * - * You may distribute under the terms of the GNU General Public License - * as specified in the README file that comes with the perl 3.0 kit. + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. * - * $Log: perl.c,v $ - * Revision 4.0 91/03/20 01:37:44 lwall - * 4.0 baseline. - * + */ + +/* + * "A ship then new they built for him/of mithril and of elven glass" --Bilbo */ #include "EXTERN.h" #include "perl.h" -#include "perly.h" -#ifdef MSDOS -#include "patchlev.h" -#else #include "patchlevel.h" + +/* XXX If this causes problems, set i_unistd=undef in the hint file. */ +#ifdef I_UNISTD +#include +#endif + +#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) +char *getenv _((char *)); /* Usually in */ +#endif + +#ifdef I_FCNTL +#include +#endif +#ifdef I_SYS_FILE +#include #endif #ifdef IAMSUID @@ -32,71 +43,678 @@ char rcsid[] = "$Header: perl.c,v 4.0 91/03/20 01:37:44 lwall Locked $\nPatch le #endif #endif -static char* moreswitches(); -static char* cddir; -#ifndef __STDC__ -extern char **environ; -#endif /* ! __STDC__ */ -static bool minus_c; -static char patchlevel[6]; -static char *nrs = "\n"; -static int nrschar = '\n'; /* final char of rs, or 0777 if none */ -static int nrslen = 1; +#ifdef PERL_OBJECT +static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen)); +#else +static void find_beginning _((void)); +static void forbid_setid _((char *)); +static void incpush _((char *, int)); +static void init_interp _((void)); +static void init_ids _((void)); +static void init_debugger _((void)); +static void init_lexer _((void)); +static void init_main_stash _((void)); +#ifdef USE_THREADS +static struct perl_thread * init_main_thread _((void)); +#endif /* USE_THREADS */ +static void init_perllib _((void)); +static void init_postdump_symbols _((int, char **, char **)); +static void init_predump_symbols _((void)); +static void my_exit_jump _((void)) __attribute__((noreturn)); +static void nuke_stacks _((void)); +static void open_script _((char *, bool, SV *, int *fd)); +static void usage _((char *)); +static void validate_suid _((char *, char*, int)); +static I32 read_e_script _((int idx, SV *buf_sv, int maxlen)); +#endif + +#ifdef PERL_OBJECT +CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd, + IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP) +{ + CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP); + if(pPerl != NULL) + pPerl->Init(); -main(argc,argv,env) -register int argc; -register char **argv; -register char **env; + return pPerl; +} +#else +PerlInterpreter * +perl_alloc(void) { - register STR *str; + PerlInterpreter *sv_interp; + + PL_curinterp = 0; + New(53, sv_interp, 1, PerlInterpreter); + return sv_interp; +} +#endif /* PERL_OBJECT */ + +void +#ifdef PERL_OBJECT +perl_construct(void) +#else +perl_construct(register PerlInterpreter *sv_interp) +#endif +{ +#ifdef USE_THREADS + int i; +#ifndef FAKE_THREADS + struct perl_thread *thr; +#endif /* FAKE_THREADS */ +#endif /* USE_THREADS */ + +#ifndef PERL_OBJECT + if (!(PL_curinterp = sv_interp)) + return; +#endif + +#ifdef MULTIPLICITY + ++PL_ninterps; + Zero(sv_interp, 1, PerlInterpreter); +#endif + + /* Init the real globals (and main thread)? */ + if (!PL_linestr) { +#ifdef USE_THREADS + + INIT_THREADS; +#ifdef ALLOC_THREAD_KEY + ALLOC_THREAD_KEY; +#else + if (pthread_key_create(&PL_thr_key, 0)) + croak("panic: pthread_key_create"); +#endif + MUTEX_INIT(&PL_sv_mutex); + /* + * Safe to use basic SV functions from now on (though + * not things like mortals or tainting yet). + */ + MUTEX_INIT(&PL_eval_mutex); + COND_INIT(&PL_eval_cond); + MUTEX_INIT(&PL_threads_mutex); + COND_INIT(&PL_nthreads_cond); +#ifdef EMULATE_ATOMIC_REFCOUNTS + MUTEX_INIT(&PL_svref_mutex); +#endif /* EMULATE_ATOMIC_REFCOUNTS */ + + MUTEX_INIT(&PL_cred_mutex); + + thr = init_main_thread(); +#endif /* USE_THREADS */ + + PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ + + PL_linestr = NEWSV(65,79); + sv_upgrade(PL_linestr,SVt_PVIV); + + if (!SvREADONLY(&PL_sv_undef)) { + /* set read-only and try to insure than we wont see REFCNT==0 + very often */ + + SvREADONLY_on(&PL_sv_undef); + SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; + + sv_setpv(&PL_sv_no,PL_No); + SvNV(&PL_sv_no); + SvREADONLY_on(&PL_sv_no); + SvREFCNT(&PL_sv_no) = (~(U32)0)/2; + + sv_setpv(&PL_sv_yes,PL_Yes); + SvNV(&PL_sv_yes); + SvREADONLY_on(&PL_sv_yes); + SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; + } + +#ifdef PERL_OBJECT + /* TODO: */ + /* PL_sighandlerp = sighandler; */ +#else + PL_sighandlerp = sighandler; +#endif + PL_pidstatus = newHV(); + +#ifdef MSDOS + /* + * There is no way we can refer to them from Perl so close them to save + * space. The other alternative would be to provide STDAUX and STDPRN + * filehandles. + */ + (void)fclose(stdaux); + (void)fclose(stdprn); +#endif + } + + PL_nrs = newSVpv("\n", 1); + PL_rs = SvREFCNT_inc(PL_nrs); + + init_stacks(ARGS); +#ifdef MULTIPLICITY + init_interp(); + PL_perl_destruct_level = 1; +#else + if (PL_perl_destruct_level > 0) + init_interp(); +#endif + + init_ids(); + PL_lex_state = LEX_NOTPARSING; + + PL_start_env.je_prev = NULL; + PL_start_env.je_ret = -1; + PL_start_env.je_mustcatch = TRUE; + PL_top_env = &PL_start_env; + STATUS_ALL_SUCCESS; + + SET_NUMERIC_STANDARD(); +#if defined(SUBVERSION) && SUBVERSION > 0 + sprintf(PL_patchlevel, "%7.5f", (double) 5 + + ((double) PATCHLEVEL / (double) 1000) + + ((double) SUBVERSION / (double) 100000)); +#else + sprintf(PL_patchlevel, "%5.3f", (double) 5 + + ((double) PATCHLEVEL / (double) 1000)); +#endif + +#if defined(LOCAL_PATCH_COUNT) + PL_localpatches = local_patches; /* For possible -v */ +#endif + + PerlIO_init(); /* Hook to IO system */ + + PL_fdpid = newAV(); /* for remembering popen pids by fd */ + PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ + + DEBUG( { + New(51,PL_debname,128,char); + New(52,PL_debdelim,128,char); + } ) + + ENTER; +} + +void +#ifdef PERL_OBJECT +perl_destruct(void) +#else +perl_destruct(register PerlInterpreter *sv_interp) +#endif +{ + dTHR; + int destruct_level; /* 0=none, 1=full, 2=full with checks */ + I32 last_sv_count; + HV *hv; +#ifdef USE_THREADS + Thread t; +#endif /* USE_THREADS */ + +#ifndef PERL_OBJECT + if (!(PL_curinterp = sv_interp)) + return; +#endif + +#ifdef USE_THREADS +#ifndef FAKE_THREADS + /* Pass 1 on any remaining threads: detach joinables, join zombies */ + retry_cleanup: + MUTEX_LOCK(&PL_threads_mutex); + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: waiting for %d threads...\n", + PL_nthreads - 1)); + for (t = thr->next; t != thr; t = t->next) { + MUTEX_LOCK(&t->mutex); + switch (ThrSTATE(t)) { + AV *av; + case THRf_ZOMBIE: + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: joining zombie %p\n", t)); + ThrSETSTATE(t, THRf_DEAD); + MUTEX_UNLOCK(&t->mutex); + PL_nthreads--; + /* + * The SvREFCNT_dec below may take a long time (e.g. av + * may contain an object scalar whose destructor gets + * called) so we have to unlock threads_mutex and start + * all over again. + */ + MUTEX_UNLOCK(&PL_threads_mutex); + JOIN(t, &av); + SvREFCNT_dec((SV*)av); + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: joined zombie %p OK\n", t)); + goto retry_cleanup; + case THRf_R_JOINABLE: + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: detaching thread %p\n", t)); + ThrSETSTATE(t, THRf_R_DETACHED); + /* + * We unlock threads_mutex and t->mutex in the opposite order + * from which we locked them just so that DETACH won't + * deadlock if it panics. It's only a breach of good style + * not a bug since they are unlocks not locks. + */ + MUTEX_UNLOCK(&PL_threads_mutex); + DETACH(t); + MUTEX_UNLOCK(&t->mutex); + goto retry_cleanup; + default: + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: ignoring %p (state %u)\n", + t, ThrSTATE(t))); + MUTEX_UNLOCK(&t->mutex); + /* fall through and out */ + } + } + /* We leave the above "Pass 1" loop with threads_mutex still locked */ + + /* Pass 2 on remaining threads: wait for the thread count to drop to one */ + while (PL_nthreads > 1) + { + DEBUG_S(PerlIO_printf(PerlIO_stderr(), + "perl_destruct: final wait for %d threads\n", + PL_nthreads - 1)); + COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex); + } + /* At this point, we're the last thread */ + MUTEX_UNLOCK(&PL_threads_mutex); + DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n")); + MUTEX_DESTROY(&PL_threads_mutex); + COND_DESTROY(&PL_nthreads_cond); +#endif /* !defined(FAKE_THREADS) */ +#endif /* USE_THREADS */ + + destruct_level = PL_perl_destruct_level; +#ifdef DEBUGGING + { + char *s; + if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) { + int i = atoi(s); + if (destruct_level < i) + destruct_level = i; + } + } +#endif + + LEAVE; + FREETMPS; + +#ifdef MULTIPLICITY + --PL_ninterps; +#endif + + /* We must account for everything. */ + + /* Destroy the main CV and syntax tree */ + if (PL_main_root) { + PL_curpad = AvARRAY(PL_comppad); + op_free(PL_main_root); + PL_main_root = Nullop; + } + PL_curcop = &PL_compiling; + PL_main_start = Nullop; + SvREFCNT_dec(PL_main_cv); + PL_main_cv = Nullcv; + PL_dirty = TRUE; + + if (PL_sv_objcount) { + /* + * Try to destruct global references. We do this first so that the + * destructors and destructees still exist. Some sv's might remain. + * Non-referenced objects are on their own. + */ + sv_clean_objs(); + } + + /* unhook hooks which will soon be, or use, destroyed data */ + SvREFCNT_dec(PL_warnhook); + PL_warnhook = Nullsv; + SvREFCNT_dec(PL_diehook); + PL_diehook = Nullsv; + SvREFCNT_dec(PL_parsehook); + PL_parsehook = Nullsv; + + /* call exit list functions */ + while (PL_exitlistlen-- > 0) + PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr); + + Safefree(PL_exitlist); + + if (destruct_level == 0){ + + DEBUG_P(debprofdump()); + + /* The exit() function will do everything that needs doing. */ + return; + } + + /* loosen bonds of global variables */ + + if(PL_rsfp) { + (void)PerlIO_close(PL_rsfp); + PL_rsfp = Nullfp; + } + + /* Filters for program text */ + SvREFCNT_dec(PL_rsfp_filters); + PL_rsfp_filters = Nullav; + + /* switches */ + PL_preprocess = FALSE; + PL_minus_n = FALSE; + PL_minus_p = FALSE; + PL_minus_l = FALSE; + PL_minus_a = FALSE; + PL_minus_F = FALSE; + PL_doswitches = FALSE; + PL_dowarn = G_WARN_OFF; + PL_doextract = FALSE; + PL_sawampersand = FALSE; /* must save all match strings */ + PL_sawstudy = FALSE; /* do fbm_instr on all strings */ + PL_sawvec = FALSE; + PL_unsafe = FALSE; + + Safefree(PL_inplace); + PL_inplace = Nullch; + + if (PL_e_script) { + SvREFCNT_dec(PL_e_script); + PL_e_script = Nullsv; + } + + /* magical thingies */ + + Safefree(PL_ofs); /* $, */ + PL_ofs = Nullch; + + Safefree(PL_ors); /* $\ */ + PL_ors = Nullch; + + SvREFCNT_dec(PL_rs); /* $/ */ + PL_rs = Nullsv; + + SvREFCNT_dec(PL_nrs); /* $/ helper */ + PL_nrs = Nullsv; + + PL_multiline = 0; /* $* */ + + SvREFCNT_dec(PL_statname); + PL_statname = Nullsv; + PL_statgv = Nullgv; + + /* defgv, aka *_ should be taken care of elsewhere */ + + /* clean up after study() */ + SvREFCNT_dec(PL_lastscream); + PL_lastscream = Nullsv; + Safefree(PL_screamfirst); + PL_screamfirst = 0; + Safefree(PL_screamnext); + PL_screamnext = 0; + + /* startup and shutdown function lists */ + SvREFCNT_dec(PL_beginav); + SvREFCNT_dec(PL_endav); + SvREFCNT_dec(PL_initav); + PL_beginav = Nullav; + PL_endav = Nullav; + PL_initav = Nullav; + + /* shortcuts just get cleared */ + PL_envgv = Nullgv; + PL_siggv = Nullgv; + PL_incgv = Nullgv; + PL_hintgv = Nullgv; + PL_errgv = Nullgv; + PL_argvgv = Nullgv; + PL_argvoutgv = Nullgv; + PL_stdingv = Nullgv; + PL_last_in_gv = Nullgv; + PL_replgv = Nullgv; + + /* reset so print() ends up where we expect */ + setdefout(Nullgv); + + /* Prepare to destruct main symbol table. */ + + hv = PL_defstash; + PL_defstash = 0; + SvREFCNT_dec(hv); + + FREETMPS; + if (destruct_level >= 2) { + if (PL_scopestack_ix != 0) + warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n", + (long)PL_scopestack_ix); + if (PL_savestack_ix != 0) + warn("Unbalanced saves: %ld more saves than restores\n", + (long)PL_savestack_ix); + if (PL_tmps_floor != -1) + warn("Unbalanced tmps: %ld more allocs than frees\n", + (long)PL_tmps_floor + 1); + if (cxstack_ix != -1) + warn("Unbalanced context: %ld more PUSHes than POPs\n", + (long)cxstack_ix + 1); + } + + /* Now absolutely destruct everything, somehow or other, loops or no. */ + last_sv_count = 0; + SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */ + while (PL_sv_count != 0 && PL_sv_count != last_sv_count) { + last_sv_count = PL_sv_count; + sv_clean_all(); + } + SvFLAGS(PL_strtab) &= ~SVTYPEMASK; + SvFLAGS(PL_strtab) |= SVt_PVHV; + + /* Destruct the global string table. */ + { + /* Yell and reset the HeVAL() slots that are still holding refcounts, + * so that sv_free() won't fail on them. + */ + I32 riter; + I32 max; + HE *hent; + HE **array; + + riter = 0; + max = HvMAX(PL_strtab); + array = HvARRAY(PL_strtab); + hent = array[0]; + for (;;) { + if (hent) { + warn("Unbalanced string table refcount: (%d) for \"%s\"", + HeVAL(hent) - Nullsv, HeKEY(hent)); + HeVAL(hent) = Nullsv; + hent = HeNEXT(hent); + } + if (!hent) { + if (++riter > max) + break; + hent = array[riter]; + } + } + } + SvREFCNT_dec(PL_strtab); + + if (PL_sv_count != 0) + warn("Scalars leaked: %ld\n", (long)PL_sv_count); + + sv_free_arenas(); + + /* No SVs have survived, need to clean out */ + PL_linestr = NULL; + PL_pidstatus = Nullhv; + Safefree(PL_origfilename); + Safefree(PL_archpat_auto); + Safefree(PL_reg_start_tmp); + if (PL_reg_curpm) + Safefree(PL_reg_curpm); + Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh)); + Safefree(PL_op_mask); + nuke_stacks(); + PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ + + DEBUG_P(debprofdump()); +#ifdef USE_THREADS + MUTEX_DESTROY(&PL_strtab_mutex); + MUTEX_DESTROY(&PL_sv_mutex); + MUTEX_DESTROY(&PL_eval_mutex); + MUTEX_DESTROY(&PL_cred_mutex); + COND_DESTROY(&PL_eval_cond); + + /* As the penultimate thing, free the non-arena SV for thrsv */ + Safefree(SvPVX(PL_thrsv)); + Safefree(SvANY(PL_thrsv)); + Safefree(PL_thrsv); + PL_thrsv = Nullsv; +#endif /* USE_THREADS */ + + /* As the absolutely last thing, free the non-arena SV for mess() */ + + if (PL_mess_sv) { + /* it could have accumulated taint magic */ + if (SvTYPE(PL_mess_sv) >= SVt_PVMG) { + MAGIC* mg; + MAGIC* moremagic; + for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { + moremagic = mg->mg_moremagic; + if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0) + Safefree(mg->mg_ptr); + Safefree(mg); + } + } + /* we know that type >= SVt_PV */ + SvOOK_off(PL_mess_sv); + Safefree(SvPVX(PL_mess_sv)); + Safefree(SvANY(PL_mess_sv)); + Safefree(PL_mess_sv); + PL_mess_sv = Nullsv; + } +} + +void +#ifdef PERL_OBJECT +perl_free(void) +#else +perl_free(PerlInterpreter *sv_interp) +#endif +{ +#ifdef PERL_OBJECT + Safefree(this); +#else + if (!(PL_curinterp = sv_interp)) + return; + Safefree(sv_interp); +#endif +} + +void +#ifdef PERL_OBJECT +perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr) +#else +perl_atexit(void (*fn) (void *), void *ptr) +#endif +{ + Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); + PL_exitlist[PL_exitlistlen].fn = fn; + PL_exitlist[PL_exitlistlen].ptr = ptr; + ++PL_exitlistlen; +} + +int +#ifdef PERL_OBJECT +perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env) +#else +perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env) +#endif +{ + dTHR; + register SV *sv; register char *s; - char *index(), *strcpy(), *getenv(); - bool dosearch = FALSE; -#ifdef DOSUID + char *scriptname = NULL; + VOL bool dosearch = FALSE; char *validarg = ""; -#endif + I32 oldscope; + AV* comppadlist; + dJMPENV; + int ret; + int fdscript = -1; #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW #ifdef IAMSUID #undef IAMSUID - fatal("suidperl is no longer needed since the kernel can now execute\n\ + croak("suidperl is no longer needed since the kernel can now execute\n\ setuid perl scripts securely.\n"); #endif #endif - origargv = argv; - origargc = argc; - origenviron = environ; - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); - sprintf(patchlevel,"%3.3s%2.2d", index(rcsid,'4'), PATCHLEVEL); -#ifdef MSDOS - /* - * There is no way we can refer to them from Perl so close them to save - * space. The other alternative would be to provide STDAUX and STDPRN - * filehandles. - */ - (void)fclose(stdaux); - (void)fclose(stdprn); -#endif - if (do_undump) { - origfilename = savestr(argv[0]); - do_undump = 0; - loop_ptr = -1; /* start label stack again */ - goto just_doit; - } - (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); - linestr = Str_new(65,80); - str_nset(linestr,"",0); - str = str_make("",0); /* first used for -I flags */ - curstash = defstash = hnew(0); - curstname = str_make("main",4); - stab_xhash(stabent("_main",TRUE)) = defstash; - defstash->tbl_name = "main"; - incstab = hadd(aadd(stabent("INC",TRUE))); - incstab->str_pok |= SP_MULTI; +#ifndef PERL_OBJECT + if (!(PL_curinterp = sv_interp)) + return 255; +#endif + +#if defined(NeXT) && defined(__DYNAMIC__) + _dyld_lookup_and_bind + ("__environ", (unsigned long *) &environ_pointer, NULL); +#endif /* environ */ + + PL_origargv = argv; + PL_origargc = argc; +#ifndef VMS /* VMS doesn't have environ array */ + PL_origenviron = environ; +#endif + + if (PL_do_undump) { + + /* Come here if running an undumped a.out. */ + + PL_origfilename = savepv(argv[0]); + PL_do_undump = FALSE; + cxstack_ix = -1; /* start label stack again */ + init_ids(); + init_postdump_symbols(argc,argv,env); + return 0; + } + + if (PL_main_root) { + PL_curpad = AvARRAY(PL_comppad); + op_free(PL_main_root); + PL_main_root = Nullop; + } + PL_main_start = Nullop; + SvREFCNT_dec(PL_main_cv); + PL_main_cv = Nullcv; + + time(&PL_basetime); + oldscope = PL_scopestack_ix; + PL_dowarn = G_WARN_OFF; + + JMPENV_PUSH(ret); + switch (ret) { + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + while (PL_scopestack_ix > oldscope) + LEAVE; + FREETMPS; + PL_curstash = PL_defstash; + if (PL_endav) + call_list(oldscope, PL_endav); + JMPENV_POP; + return STATUS_NATIVE_EXPORT; + case 3: + JMPENV_POP; + PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); + return 1; + } + + sv_setpvn(PL_linestr,"",0); + sv = newSVpv("",0); /* first used for -I flags */ + SAVEFREESV(sv); + init_main_stash(); + for (argc--,argv++; argc > 0; argc--,argv++) { if (argv[0][0] != '-' || !argv[0][1]) break; @@ -109,263 +727,1390 @@ setuid perl scripts securely.\n"); s = argv[0]+1; reswitch: switch (*s) { + case ' ': case '0': + case 'F': case 'a': case 'c': case 'd': case 'D': + case 'h': case 'i': case 'l': + case 'M': + case 'm': case 'n': case 'p': + case 's': case 'u': case 'U': case 'v': + case 'W': + case 'X': case 'w': if (s = moreswitches(s)) goto reswitch; break; + case 'T': + PL_tainting = TRUE; + s++; + goto reswitch; + case 'e': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -e allowed in setuid scripts"); -#endif - if (!e_fp) { - e_tmpname = savestr(TMPPATH); - (void)mktemp(e_tmpname); - e_fp = fopen(e_tmpname,"w"); - if (!e_fp) - fatal("Cannot open temporary file"); + if (PL_euid != PL_uid || PL_egid != PL_gid) + croak("No -e allowed in setuid scripts"); + if (!PL_e_script) { + PL_e_script = newSVpv("",0); + filter_add(read_e_script, NULL); } - if (argv[1]) { - fputs(argv[1],e_fp); + if (*++s) + sv_catpv(PL_e_script, s); + else if (argv[1]) { + sv_catpv(PL_e_script, argv[1]); argc--,argv++; } - (void)putc('\n', e_fp); + else + croak("No code specified for -e"); + sv_catpv(PL_e_script, "\n"); break; - case 'I': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif - str_cat(str,"-"); - str_cat(str,s); - str_cat(str," "); - if (*++s) { - (void)apush(stab_array(incstab),str_make(s,0)); - } - else if (argv[1]) { - (void)apush(stab_array(incstab),str_make(argv[1],0)); - str_cat(str,argv[1]); + + case 'I': /* -I handled both here and in moreswitches() */ + forbid_setid("-I"); + if (!*++s && (s=argv[1]) != Nullch) { argc--,argv++; - str_cat(str," "); } + while (s && isSPACE(*s)) + ++s; + if (s && *s) { + char *e, *p; + for (e = s; *e && !isSPACE(*e); e++) ; + p = savepvn(s, e-s); + incpush(p, TRUE); + sv_catpv(sv,"-I"); + sv_catpv(sv,p); + sv_catpv(sv," "); + Safefree(p); + } /* XXX else croak? */ break; case 'P': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -P allowed in setuid scripts"); -#endif - preprocess = TRUE; - s++; - goto reswitch; - case 's': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -s allowed in setuid scripts"); -#endif - doswitches = TRUE; + forbid_setid("-P"); + PL_preprocess = TRUE; s++; goto reswitch; case 'S': + forbid_setid("-S"); dosearch = TRUE; s++; goto reswitch; + case 'V': + if (!PL_preambleav) + PL_preambleav = newAV(); + av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); + if (*++s != ':') { + PL_Sv = newSVpv("print myconfig();",0); +#ifdef VMS + sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); +#else + sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); +#endif +#if defined(DEBUGGING) || defined(MULTIPLICITY) + sv_catpv(PL_Sv,"\" Compile-time options:"); +# ifdef DEBUGGING + sv_catpv(PL_Sv," DEBUGGING"); +# endif +# ifdef MULTIPLICITY + sv_catpv(PL_Sv," MULTIPLICITY"); +# endif + sv_catpv(PL_Sv,"\\n\","); +#endif +#if defined(LOCAL_PATCH_COUNT) + if (LOCAL_PATCH_COUNT > 0) { + int i; + sv_catpv(PL_Sv,"\" Locally applied patches:\\n\","); + for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { + if (PL_localpatches[i]) + sv_catpvf(PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]); + } + } +#endif + sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME); +#ifdef __DATE__ +# ifdef __TIME__ + sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); +# else + sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__); +# endif +#endif + sv_catpv(PL_Sv, "; \ +$\"=\"\\n \"; \ +@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \ +print \" \\%ENV:\\n @env\\n\" if @env; \ +print \" \\@INC:\\n @INC\\n\";"); + } + else { + PL_Sv = newSVpv("config_vars(qw(",0); + sv_catpv(PL_Sv, ++s); + sv_catpv(PL_Sv, "))"); + s += strlen(s); + } + av_push(PL_preambleav, PL_Sv); + scriptname = BIT_BUCKET; /* don't look for script or read stdin */ + goto reswitch; case 'x': - doextract = TRUE; + PL_doextract = TRUE; s++; if (*s) - cddir = savestr(s); + PL_cddir = savepv(s); break; - case '-': - argc--,argv++; - goto switch_end; case 0: break; + case '-': + if (!*++s || isSPACE(*s)) { + argc--,argv++; + goto switch_end; + } + /* catch use of gnu style long options */ + if (strEQ(s, "version")) { + s = "v"; + goto reswitch; + } + if (strEQ(s, "help")) { + s = "h"; + goto reswitch; + } + s--; + /* FALL THROUGH */ default: - fatal("Unrecognized switch: -%s",s); + croak("Unrecognized switch: -%s (-h will show valid options)",s); } } switch_end: - if (e_fp) { - (void)fclose(e_fp); - argc++,argv--; - argv[0] = e_tmpname; + + if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) { + while (s && *s) { + while (isSPACE(*s)) + s++; + if (*s == '-') { + s++; + if (isSPACE(*s)) + continue; + } + if (!*s) + break; + if (!strchr("DIMUdmw", *s)) + croak("Illegal switch in PERL5OPT: -%c", *s); + s = moreswitches(s); + } } + if (!scriptname) + scriptname = argv[0]; + if (PL_e_script) { + argc++,argv--; + scriptname = BIT_BUCKET; /* don't look for script or read stdin */ + } + else if (scriptname == Nullch) { #ifdef MSDOS -#define PERLLIB_SEP ';' + if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) + moreswitches("h"); +#endif + scriptname = "-"; + } + + init_perllib(); + + open_script(scriptname,dosearch,sv,&fdscript); + + validate_suid(validarg, scriptname,fdscript); + + if (PL_doextract) + find_beginning(); + + PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0); + sv_upgrade((SV *)PL_compcv, SVt_PVCV); + CvUNIQUE_on(PL_compcv); + + PL_comppad = newAV(); + av_push(PL_comppad, Nullsv); + PL_curpad = AvARRAY(PL_comppad); + PL_comppad_name = newAV(); + PL_comppad_name_fill = 0; + PL_min_intro_pending = 0; + PL_padix = 0; +#ifdef USE_THREADS + av_store(PL_comppad_name, 0, newSVpv("@_", 2)); + PL_curpad[0] = (SV*)newAV(); + SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ + CvOWNER(PL_compcv) = 0; + New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); + MUTEX_INIT(CvMUTEXP(PL_compcv)); +#endif /* USE_THREADS */ + + comppadlist = newAV(); + AvREAL_off(comppadlist); + av_store(comppadlist, 0, (SV*)PL_comppad_name); + av_store(comppadlist, 1, (SV*)PL_comppad); + CvPADLIST(PL_compcv) = comppadlist; + + boot_core_UNIVERSAL(); + + if (xsinit) + (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */ +#if defined(VMS) || defined(WIN32) || defined(DJGPP) + init_os_extras(); +#endif + + init_predump_symbols(); + /* init_postdump_symbols not currently designed to be called */ + /* more than once (ENV isn't cleared first, for example) */ + /* But running with -u leaves %ENV & @ARGV undefined! XXX */ + if (!PL_do_undump) + init_postdump_symbols(argc,argv,env); + + init_lexer(); + + /* now parse the script */ + + SETERRNO(0,SS$_NORMAL); + PL_error_count = 0; + if (yyparse() || PL_error_count) { + if (PL_minus_c) + croak("%s had compilation errors.\n", PL_origfilename); + else { + croak("Execution of %s aborted due to compilation errors.\n", + PL_origfilename); + } + } + PL_curcop->cop_line = 0; + PL_curstash = PL_defstash; + PL_preprocess = FALSE; + if (PL_e_script) { + SvREFCNT_dec(PL_e_script); + PL_e_script = Nullsv; + } + + /* now that script is parsed, we can modify record separator */ + SvREFCNT_dec(PL_rs); + PL_rs = SvREFCNT_inc(PL_nrs); + sv_setsv(perl_get_sv("/", TRUE), PL_rs); + if (PL_do_undump) + my_unexec(); + + if (ckWARN(WARN_ONCE)) + gv_check(PL_defstash); + + LEAVE; + FREETMPS; + +#ifdef MYMALLOC + if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) + dump_mstats("after compilation:"); +#endif + + ENTER; + PL_restartop = 0; + JMPENV_POP; + return 0; +} + +int +#ifdef PERL_OBJECT +perl_run(void) #else -#define PERLLIB_SEP ':' +perl_run(PerlInterpreter *sv_interp) #endif -#ifndef TAINT /* Can't allow arbitrary PERLLIB in setuid script */ - { - char * s2 = getenv("PERLLIB"); - - if ( s2 ) { - /* Break at all separators */ - while ( *s2 ) { - /* First, skip any consecutive separators */ - while ( *s2 == PERLLIB_SEP ) { - /* Uncomment the next line for PATH semantics */ - /* (void)apush(stab_array(incstab),str_make(".",1)); */ - s2++; - } - if ( (s = index(s2,PERLLIB_SEP)) != Nullch ) { - (void)apush(stab_array(incstab),str_make(s2,(int)(s-s2))); - s2 = s+1; - } else { - (void)apush(stab_array(incstab),str_make(s2,0)); - break; - } +{ + dTHR; + I32 oldscope; + dJMPENV; + int ret; + +#ifndef PERL_OBJECT + if (!(PL_curinterp = sv_interp)) + return 255; +#endif + + oldscope = PL_scopestack_ix; + + JMPENV_PUSH(ret); + switch (ret) { + case 1: + cxstack_ix = -1; /* start context stack again */ + break; + case 2: + /* my_exit() was called */ + while (PL_scopestack_ix > oldscope) + LEAVE; + FREETMPS; + PL_curstash = PL_defstash; + if (PL_endav) + call_list(oldscope, PL_endav); +#ifdef MYMALLOC + if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) + dump_mstats("after execution: "); +#endif + JMPENV_POP; + return STATUS_NATIVE_EXPORT; + case 3: + if (!PL_restartop) { + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; + JMPENV_POP; + return 1; + } + POPSTACK_TO(PL_mainstack); + break; + } + + DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", + PL_sawampersand ? "Enabling" : "Omitting")); + + if (!PL_restartop) { + DEBUG_x(dump_all()); + DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); + DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n", + (unsigned long) thr)); + + if (PL_minus_c) { + PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename); + my_exit(0); + } + if (PERLDB_SINGLE && PL_DBsingle) + sv_setiv(PL_DBsingle, 1); + if (PL_initav) + call_list(oldscope, PL_initav); + } + + /* do it */ + + if (PL_restartop) { + PL_op = PL_restartop; + PL_restartop = 0; + CALLRUNOPS(); + } + else if (PL_main_start) { + CvDEPTH(PL_main_cv) = 1; + PL_op = PL_main_start; + CALLRUNOPS(); + } + + my_exit(0); + /* NOTREACHED */ + return 0; +} + +SV* +perl_get_sv(char *name, I32 create) +{ + GV *gv; +#ifdef USE_THREADS + if (name[1] == '\0' && !isALPHA(name[0])) { + PADOFFSET tmp = find_threadsv(name); + if (tmp != NOT_IN_PAD) { + dTHR; + return THREADSV(tmp); + } + } +#endif /* USE_THREADS */ + gv = gv_fetchpv(name, create, SVt_PV); + if (gv) + return GvSV(gv); + return Nullsv; +} + +AV* +perl_get_av(char *name, I32 create) +{ + GV* gv = gv_fetchpv(name, create, SVt_PVAV); + if (create) + return GvAVn(gv); + if (gv) + return GvAV(gv); + return Nullav; +} + +HV* +perl_get_hv(char *name, I32 create) +{ + GV* gv = gv_fetchpv(name, create, SVt_PVHV); + if (create) + return GvHVn(gv); + if (gv) + return GvHV(gv); + return Nullhv; +} + +CV* +perl_get_cv(char *name, I32 create) +{ + GV* gv = gv_fetchpv(name, create, SVt_PVCV); + /* XXX unsafe for threads if eval_owner isn't held */ + if (create && !GvCVu(gv)) + return newSUB(start_subparse(FALSE, 0), + newSVOP(OP_CONST, 0, newSVpv(name,0)), + Nullop, + Nullop); + if (gv) + return GvCVu(gv); + return Nullcv; +} + +/* Be sure to refetch the stack pointer after calling these routines. */ + +I32 +perl_call_argv(char *sub_name, I32 flags, register char **argv) + + /* See G_* flags in cop.h */ + /* null terminated arg list */ +{ + dSP; + + PUSHMARK(SP); + if (argv) { + while (*argv) { + XPUSHs(sv_2mortal(newSVpv(*argv,0))); + argv++; + } + PUTBACK; + } + return perl_call_pv(sub_name, flags); +} + +I32 +perl_call_pv(char *sub_name, I32 flags) + /* name of the subroutine */ + /* See G_* flags in cop.h */ +{ + return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags); +} + +I32 +perl_call_method(char *methname, I32 flags) + /* name of the subroutine */ + /* See G_* flags in cop.h */ +{ + dSP; + OP myop; + if (!PL_op) + PL_op = &myop; + XPUSHs(sv_2mortal(newSVpv(methname,0))); + PUTBACK; + pp_method(ARGS); + if(PL_op == &myop) + PL_op = Nullop; + return perl_call_sv(*PL_stack_sp--, flags); +} + +/* May be called with any of a CV, a GV, or an SV containing the name. */ +I32 +perl_call_sv(SV *sv, I32 flags) + + /* See G_* flags in cop.h */ +{ + dSP; + LOGOP myop; /* fake syntax tree node */ + I32 oldmark; + I32 retval; + I32 oldscope; + bool oldcatch = CATCH_GET; + dJMPENV; + int ret; + OP* oldop = PL_op; + + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } + + Zero(&myop, 1, LOGOP); + myop.op_next = Nullop; + if (!(flags & G_NOARGS)) + myop.op_flags |= OPf_STACKED; + myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : + (flags & G_ARRAY) ? OPf_WANT_LIST : + OPf_WANT_SCALAR); + SAVEOP(); + PL_op = (OP*)&myop; + + EXTEND(PL_stack_sp, 1); + *++PL_stack_sp = sv; + oldmark = TOPMARK; + oldscope = PL_scopestack_ix; + + if (PERLDB_SUB && PL_curstash != PL_debstash + /* Handle first BEGIN of -d. */ + && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) + /* Try harder, since this may have been a sighandler, thus + * curstash may be meaningless. */ + && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash) + && !(flags & G_NODEBUG)) + PL_op->op_private |= OPpENTERSUB_DB; + + if (flags & G_EVAL) { + cLOGOP->op_other = PL_op; + PL_markstack_ptr--; + /* we're trying to emulate pp_entertry() here */ + { + register PERL_CONTEXT *cx; + I32 gimme = GIMME_V; + + ENTER; + SAVETMPS; + + push_return(PL_op->op_next); + PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp); + PUSHEVAL(cx, 0, 0); + PL_eval_root = PL_op; /* Only needed so that goto works right. */ + + PL_in_eval = 1; + if (flags & G_KEEPERR) + PL_in_eval |= 4; + else + sv_setpv(ERRSV,""); + } + PL_markstack_ptr++; + + JMPENV_PUSH(ret); + switch (ret) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + PL_curstash = PL_defstash; + FREETMPS; + JMPENV_POP; + if (PL_statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (PL_restartop) { + PL_op = PL_restartop; + PL_restartop = 0; + break; + } + PL_stack_sp = PL_stack_base + oldmark; + if (flags & G_ARRAY) + retval = 0; + else { + retval = 1; + *++PL_stack_sp = &PL_sv_undef; } + goto cleanup; } } -#endif /* TAINT */ + else + CATCH_SET(TRUE); + + if (PL_op == (OP*)&myop) + PL_op = pp_entersub(ARGS); + if (PL_op) + CALLRUNOPS(); + retval = PL_stack_sp - (PL_stack_base + oldmark); + if ((flags & G_EVAL) && !(flags & G_KEEPERR)) + sv_setpv(ERRSV,""); + + cleanup: + if (flags & G_EVAL) { + if (PL_scopestack_ix > oldscope) { + SV **newsp; + PMOP *newpm; + I32 gimme; + register PERL_CONTEXT *cx; + I32 optype; + + POPBLOCK(cx,newpm); + POPEVAL(cx); + pop_return(); + PL_curpm = newpm; + LEAVE; + } + JMPENV_POP; + } + else + CATCH_SET(oldcatch); -#ifndef PRIVLIB -#define PRIVLIB "/usr/local/lib/perl" -#endif - (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); - (void)apush(stab_array(incstab),str_make(".",1)); + if (flags & G_DISCARD) { + PL_stack_sp = PL_stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; + } + PL_op = oldop; + return retval; +} - str_set(&str_no,No); - str_set(&str_yes,Yes); +/* Eval a string. The G_EVAL flag is always assumed. */ - /* open script */ +I32 +perl_eval_sv(SV *sv, I32 flags) + + /* See G_* flags in cop.h */ +{ + dSP; + UNOP myop; /* fake syntax tree node */ + I32 oldmark = SP - PL_stack_base; + I32 retval; + I32 oldscope; + dJMPENV; + int ret; + OP* oldop = PL_op; + + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } - if (argv[0] == Nullch) -#ifdef MSDOS + SAVEOP(); + PL_op = (OP*)&myop; + Zero(PL_op, 1, UNOP); + EXTEND(PL_stack_sp, 1); + *++PL_stack_sp = sv; + oldscope = PL_scopestack_ix; + + if (!(flags & G_NOARGS)) + myop.op_flags = OPf_STACKED; + myop.op_next = Nullop; + myop.op_type = OP_ENTEREVAL; + myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : + (flags & G_ARRAY) ? OPf_WANT_LIST : + OPf_WANT_SCALAR); + if (flags & G_KEEPERR) + myop.op_flags |= OPf_SPECIAL; + + JMPENV_PUSH(ret); + switch (ret) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + PL_curstash = PL_defstash; + FREETMPS; + JMPENV_POP; + if (PL_statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (PL_restartop) { + PL_op = PL_restartop; + PL_restartop = 0; + break; + } + PL_stack_sp = PL_stack_base + oldmark; + if (flags & G_ARRAY) + retval = 0; + else { + retval = 1; + *++PL_stack_sp = &PL_sv_undef; + } + goto cleanup; + } + + if (PL_op == (OP*)&myop) + PL_op = pp_entereval(ARGS); + if (PL_op) + CALLRUNOPS(); + retval = PL_stack_sp - (PL_stack_base + oldmark); + if (!(flags & G_KEEPERR)) + sv_setpv(ERRSV,""); + + cleanup: + JMPENV_POP; + if (flags & G_DISCARD) { + PL_stack_sp = PL_stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; + } + PL_op = oldop; + return retval; +} + +SV* +perl_eval_pv(char *p, I32 croak_on_error) +{ + dSP; + SV* sv = newSVpv(p, 0); + + PUSHMARK(SP); + perl_eval_sv(sv, G_SCALAR); + SvREFCNT_dec(sv); + + SPAGAIN; + sv = POPs; + PUTBACK; + + if (croak_on_error && SvTRUE(ERRSV)) { + STRLEN n_a; + croak(SvPVx(ERRSV, n_a)); + } + + return sv; +} + +/* Require a module. */ + +void +perl_require_pv(char *pv) +{ + SV* sv; + dSP; + PUSHSTACKi(PERLSI_REQUIRE); + PUTBACK; + sv = sv_newmortal(); + sv_setpv(sv, "require '"); + sv_catpv(sv, pv); + sv_catpv(sv, "'"); + perl_eval_sv(sv, G_DISCARD); + SPAGAIN; + POPSTACK; +} + +void +magicname(char *sym, char *name, I32 namlen) +{ + register GV *gv; + + if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) + sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); +} + +STATIC void +usage(char *name) /* XXX move this out into a module ? */ + +{ + /* This message really ought to be max 23 lines. + * Removed -h because the user already knows that opton. Others? */ + + static char *usage_msg[] = { +"-0[octal] specify record separator (\\0, if no argument)", +"-a autosplit mode with -n or -p (splits $_ into @F)", +"-c check syntax only (runs BEGIN and END blocks)", +"-d[:debugger] run scripts under debugger", +"-D[number/list] set debugging flags (argument is a bit mask or flags)", +"-e 'command' one line of script. Several -e's allowed. Omit [programfile].", +"-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.", +"-i[extension] edit <> files in place (make backup if extension supplied)", +"-Idirectory specify @INC/#include directory (may be used more than once)", +"-l[octal] enable line ending processing, specifies line terminator", +"-[mM][-]module.. executes `use/no module...' before executing your script.", +"-n assume 'while (<>) { ... }' loop around your script", +"-p assume loop like -n but print line also like sed", +"-P run script through C preprocessor before compilation", +"-s enable some switch parsing for switches after script name", +"-S look for the script using PATH environment variable", +"-T turn on tainting checks", +"-u dump core after parsing script", +"-U allow unsafe operations", +"-v print version number, patchlevel plus VERY IMPORTANT perl info", +"-V[:variable] print perl configuration information", +"-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.", +"-x[directory] strip off text before #!perl line and perhaps cd to directory", +"\n", +NULL +}; + char **p = usage_msg; + + printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name); + while (*p) + printf("\n %s", *p++); +} + +/* This routine handles any switches that can be given during run */ + +char * +moreswitches(char *s) +{ + I32 numlen; + U32 rschar; + + switch (*s) { + case '0': { - if ( isatty(fileno(stdin)) ) - moreswitches("v"); - argv[0] = "-"; + dTHR; + rschar = scan_oct(s, 4, &numlen); + SvREFCNT_dec(PL_nrs); + if (rschar & ~((U8)~0)) + PL_nrs = &PL_sv_undef; + else if (!rschar && numlen >= 2) + PL_nrs = newSVpv("", 0); + else { + char ch = rschar; + PL_nrs = newSVpv(&ch, 1); + } + return s + numlen; } + case 'F': + PL_minus_F = TRUE; + PL_splitstr = savepv(s + 1); + s += strlen(s); + return s; + case 'a': + PL_minus_a = TRUE; + s++; + return s; + case 'c': + PL_minus_c = TRUE; + s++; + return s; + case 'd': + forbid_setid("-d"); + s++; + if (*s == ':' || *s == '=') { + my_setenv("PERL5DB", form("use Devel::%s;", ++s)); + s += strlen(s); + } + if (!PL_perldb) { + PL_perldb = PERLDB_ALL; + init_debugger(); + } + return s; + case 'D': +#ifdef DEBUGGING + forbid_setid("-D"); + if (isALPHA(s[1])) { + static char debopts[] = "psltocPmfrxuLHXDS"; + char *d; + + for (s++; *s && (d = strchr(debopts,*s)); s++) + PL_debug |= 1 << (d - debopts); + } + else { + PL_debug = atoi(s+1); + for (s++; isDIGIT(*s); s++) ; + } + PL_debug |= 0x80000000; +#else + warn("Recompile perl with -DDEBUGGING to use -D switch\n"); + for (s++; isALNUM(*s); s++) ; +#endif + /*SUPPRESS 530*/ + return s; + case 'h': + usage(PL_origargv[0]); + PerlProc_exit(0); + case 'i': + if (PL_inplace) + Safefree(PL_inplace); + PL_inplace = savepv(s+1); + /*SUPPRESS 530*/ + for (s = PL_inplace; *s && !isSPACE(*s); s++) ; + if (*s) { + *s++ = '\0'; + if (*s == '-') /* Additional switches on #! line. */ + s++; + } + return s; + case 'I': /* -I handled both here and in parse_perl() */ + forbid_setid("-I"); + ++s; + while (*s && isSPACE(*s)) + ++s; + if (*s) { + char *e, *p; + for (e = s; *e && !isSPACE(*e); e++) ; + p = savepvn(s, e-s); + incpush(p, TRUE); + Safefree(p); + s = e; + } + else + croak("No space allowed after -I"); + return s; + case 'l': + PL_minus_l = TRUE; + s++; + if (PL_ors) + Safefree(PL_ors); + if (isDIGIT(*s)) { + PL_ors = savepv("\n"); + PL_orslen = 1; + *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen); + s += numlen; + } + else { + dTHR; + if (RsPARA(PL_nrs)) { + PL_ors = "\n\n"; + PL_orslen = 2; + } + else + PL_ors = SvPV(PL_nrs, PL_orslen); + PL_ors = savepvn(PL_ors, PL_orslen); + } + return s; + case 'M': + forbid_setid("-M"); /* XXX ? */ + /* FALL THROUGH */ + case 'm': + forbid_setid("-m"); /* XXX ? */ + if (*++s) { + char *start; + SV *sv; + char *use = "use "; + /* -M-foo == 'no foo' */ + if (*s == '-') { use = "no "; ++s; } + sv = newSVpv(use,0); + start = s; + /* We allow -M'Module qw(Foo Bar)' */ + while(isALNUM(*s) || *s==':') ++s; + if (*s != '=') { + sv_catpv(sv, start); + if (*(start-1) == 'm') { + if (*s != '\0') + croak("Can't use '%c' after -mname", *s); + sv_catpv( sv, " ()"); + } + } else { + sv_catpvn(sv, start, s-start); + sv_catpv(sv, " split(/,/,q{"); + sv_catpv(sv, ++s); + sv_catpv(sv, "})"); + } + s += strlen(s); + if (PL_preambleav == NULL) + PL_preambleav = newAV(); + av_push(PL_preambleav, sv); + } + else + croak("No space allowed after -%c", *(s-1)); + return s; + case 'n': + PL_minus_n = TRUE; + s++; + return s; + case 'p': + PL_minus_p = TRUE; + s++; + return s; + case 's': + forbid_setid("-s"); + PL_doswitches = TRUE; + s++; + return s; + case 'T': + if (!PL_tainting) + croak("Too late for \"-T\" option"); + s++; + return s; + case 'u': + PL_do_undump = TRUE; + s++; + return s; + case 'U': + PL_unsafe = TRUE; + s++; + return s; + case 'v': +#if defined(SUBVERSION) && SUBVERSION > 0 + printf("\nThis is perl, version 5.%03d_%02d built for %s", + PATCHLEVEL, SUBVERSION, ARCHNAME); #else - argv[0] = "-"; + printf("\nThis is perl, version %s built for %s", + PL_patchlevel, ARCHNAME); +#endif +#if defined(LOCAL_PATCH_COUNT) + if (LOCAL_PATCH_COUNT > 0) + printf("\n(with %d registered patch%s, see perl -V for more detail)", + LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : ""); +#endif + + printf("\n\nCopyright 1987-1998, Larry Wall\n"); +#ifdef MSDOS + printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); +#endif +#ifdef DJGPP + printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"); + printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n"); +#endif +#ifdef OS2 + printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" + "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n"); +#endif +#ifdef atarist + printf("atariST series port, ++jrb bammi@cadence.com\n"); +#endif +#ifdef __BEOS__ + printf("BeOS port Copyright Tom Spindler, 1997-1998\n"); +#endif +#ifdef MPE + printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n"); +#endif +#ifdef OEMVS + printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n"); +#endif +#ifdef __VOS__ + printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n"); +#endif +#ifdef __OPEN_VM + printf("VM/ESA port by Neale Ferguson, 1998\n"); +#endif +#ifdef POSIX_BC + printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998\n"); +#endif +#ifdef BINARY_BUILD_NOTICE + BINARY_BUILD_NOTICE; +#endif + printf("\n\ +Perl may be copied only under the terms of either the Artistic License or the\n\ +GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\ +Complete documentation for Perl, including FAQ lists, should be found on\n\ +this system using `man perl' or `perldoc perl'. If you have access to the\n\ +Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n"); + PerlProc_exit(0); + case 'w': + if (! (PL_dowarn & G_WARN_ALL_MASK)) + PL_dowarn |= G_WARN_ON; + s++; + return s; + case 'W': + PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; + PL_compiling.cop_warnings = WARN_ALL ; + s++; + return s; + case 'X': + PL_dowarn = G_WARN_ALL_OFF; + PL_compiling.cop_warnings = WARN_NONE ; + s++; + return s; + case '*': + case ' ': + if (s[1] == '-') /* Additional switches on #! line. */ + return s+2; + break; + case '-': + case 0: +#if defined(WIN32) || !defined(PERL_STRICT_CR) + case '\r': #endif - if (dosearch && !index(argv[0], '/') && (s = getenv("PATH"))) { - char *xfound = Nullch, *xfailed = Nullch; - int len; + case '\n': + case '\t': + break; +#ifdef ALTERNATE_SHEBANG + case 'S': /* OS/2 needs -S on "extproc" line. */ + break; +#endif + case 'P': + if (PL_preprocess) + return s+1; + /* FALL THROUGH */ + default: + croak("Can't emulate -%.1s on #! line",s); + } + return Nullch; +} + +/* compliments of Tom Christiansen */ + +/* unexec() can be found in the Gnu emacs distribution */ +/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ + +void +my_unexec(void) +{ +#ifdef UNEXEC + SV* prog; + SV* file; + int status = 1; + extern int etext; - bufend = s + strlen(s); - while (*s) { -#ifndef MSDOS - s = cpytill(tokenbuf,s,bufend,':',&len); + prog = newSVpv(BIN_EXP, 0); + sv_catpv(prog, "/perl"); + file = newSVpv(PL_origfilename, 0); + sv_catpv(file, ".perldump"); + + unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); + /* unexec prints msg to stderr in case of failure */ + PerlProc_exit(status); #else - for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); - tokenbuf[len] = '\0'; +# ifdef VMS +# include + lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ +# else + ABORT(); /* for use with undump */ +# endif #endif - if (*s) - s++; -#ifndef MSDOS - if (len && tokenbuf[len-1] != '/') +} + +/* initialize curinterp */ +STATIC void +init_interp(void) +{ + +#ifdef PERL_OBJECT /* XXX kludge */ +#define I_REINIT \ + STMT_START { \ + PL_chopset = " \n-"; \ + PL_copline = NOLINE; \ + PL_curcop = &PL_compiling;\ + PL_curcopdb = NULL; \ + PL_dbargs = 0; \ + PL_dlmax = 128; \ + PL_dumpindent = 4; \ + PL_laststatval = -1; \ + PL_laststype = OP_STAT; \ + PL_maxscream = -1; \ + PL_maxsysfd = MAXSYSFD; \ + PL_statname = Nullsv; \ + PL_tmps_floor = -1; \ + PL_tmps_ix = -1; \ + PL_op_mask = NULL; \ + PL_dlmax = 128; \ + PL_laststatval = -1; \ + PL_laststype = OP_STAT; \ + PL_mess_sv = Nullsv; \ + PL_splitstr = " "; \ + PL_generation = 100; \ + PL_exitlist = NULL; \ + PL_exitlistlen = 0; \ + PL_regindent = 0; \ + PL_in_clean_objs = FALSE; \ + PL_in_clean_all = FALSE; \ + PL_profiledata = NULL; \ + PL_rsfp = Nullfp; \ + PL_rsfp_filters = Nullav; \ + PL_dirty = FALSE; \ + } STMT_END + I_REINIT; #else - if (len && tokenbuf[len-1] != '\\') +# ifdef MULTIPLICITY +# define PERLVAR(var,type) +# define PERLVARI(var,type,init) PL_curinterp->var = init; +# define PERLVARIC(var,type,init) PL_curinterp->var = init; +# include "intrpvar.h" +# ifndef USE_THREADS +# include "thrdvar.h" +# endif +# undef PERLVAR +# undef PERLVARI +# undef PERLVARIC +# else +# define PERLVAR(var,type) +# define PERLVARI(var,type,init) PL_##var = init; +# define PERLVARIC(var,type,init) PL_##var = init; +# include "intrpvar.h" +# ifndef USE_THREADS +# include "thrdvar.h" +# endif +# undef PERLVAR +# undef PERLVARI +# undef PERLVARIC +# endif #endif - (void)strcat(tokenbuf+len,"/"); - (void)strcat(tokenbuf+len,argv[0]); -#ifdef DEBUGGING - if (debug & 1) - fprintf(stderr,"Looking for %s\n",tokenbuf); + +} + +STATIC void +init_main_stash(void) +{ + dTHR; + GV *gv; + + /* Note that strtab is a rather special HV. Assumptions are made + about not iterating on it, and not adding tie magic to it. + It is properly deallocated in perl_destruct() */ + PL_strtab = newHV(); +#ifdef USE_THREADS + MUTEX_INIT(&PL_strtab_mutex); #endif - if (stat(tokenbuf,&statbuf) < 0) /* not there? */ - continue; - if (S_ISREG(statbuf.st_mode) - && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { - xfound = tokenbuf; /* bingo! */ - break; + HvSHAREKEYS_off(PL_strtab); /* mandatory */ + hv_ksplit(PL_strtab, 512); + + PL_curstash = PL_defstash = newHV(); + PL_curstname = newSVpv("main",4); + gv = gv_fetchpv("main::",TRUE, SVt_PVHV); + SvREFCNT_dec(GvHV(gv)); + GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash); + SvREADONLY_on(gv); + HvNAME(PL_defstash) = savepv("main"); + PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); + GvMULTI_on(PL_incgv); + PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */ + GvMULTI_on(PL_hintgv); + PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV); + PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); + GvMULTI_on(PL_errgv); + PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */ + GvMULTI_on(PL_replgv); + (void)form("%240s",""); /* Preallocate temp - for immediate signals. */ + sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ + sv_setpvn(ERRSV, "", 0); + PL_curstash = PL_defstash; + PL_compiling.cop_stash = PL_defstash; + PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); + PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); + /* We must init $/ before switches are processed. */ + sv_setpvn(perl_get_sv("/", TRUE), "\n", 1); +} + +STATIC void +open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript) +{ + dTHR; + register char *s; + + *fdscript = -1; + + if (PL_e_script) { + PL_origfilename = savepv("-e"); + } + else { + /* if find_script() returns, it returns a malloc()-ed value */ + PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1); + + if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { + char *s = scriptname + 8; + *fdscript = atoi(s); + while (isDIGIT(*s)) + s++; + if (*s) { + scriptname = savepv(s + 1); + Safefree(PL_origfilename); + PL_origfilename = scriptname; } - if (!xfailed) - xfailed = savestr(tokenbuf); } - if (!xfound) - fatal("Can't execute %s", xfailed ? xfailed : argv[0] ); - if (xfailed) - Safefree(xfailed); - argv[0] = savestr(xfound); - } - - fdpid = anew(Nullstab); /* for remembering popen pids by fd */ - pidstatus = hnew(COEFFSIZE);/* for remembering status of dead pids */ - - origfilename = savestr(argv[0]); - curcmd->c_filestab = fstab(origfilename); - if (strEQ(origfilename,"-")) - argv[0] = ""; - if (preprocess) { - str_cat(str,"-I"); - str_cat(str,PRIVLIB); - (void)sprintf(buf, "\ -%ssed %s -e '/^[^#]/b' \ + } + + PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); + if (strEQ(PL_origfilename,"-")) + scriptname = ""; + if (*fdscript >= 0) { + PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE); +#if defined(HAS_FCNTL) && defined(F_SETFD) + if (PL_rsfp) + fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ +#endif + } + else if (PL_preprocess) { + char *cpp_cfg = CPPSTDIN; + SV *cpp = newSVpv("",0); + SV *cmd = NEWSV(0,0); + + if (strEQ(cpp_cfg, "cppstdin")) + sv_catpvf(cpp, "%s/", BIN_EXP); + sv_catpv(cpp, cpp_cfg); + + sv_catpv(sv,"-I"); + sv_catpv(sv,PRIVLIB_EXP); + +#ifdef MSDOS + sv_setpvf(cmd, "\ +sed %s -e \"/^[^#]/b\" \ + -e \"/^#[ ]*include[ ]/b\" \ + -e \"/^#[ ]*define[ ]/b\" \ + -e \"/^#[ ]*if[ ]/b\" \ + -e \"/^#[ ]*ifdef[ ]/b\" \ + -e \"/^#[ ]*ifndef[ ]/b\" \ + -e \"/^#[ ]*else/b\" \ + -e \"/^#[ ]*elif[ ]/b\" \ + -e \"/^#[ ]*undef[ ]/b\" \ + -e \"/^#[ ]*endif/b\" \ + -e \"s/^#.*//\" \ + %s | %_ -C %_ %s", + (PL_doextract ? "-e \"1,/^#/d\n\"" : ""), +#else +# ifdef __OPEN_VM + sv_setpvf(cmd, "\ +%s %s -e '/^[^#]/b' \ + -e '/^#[ ]*include[ ]/b' \ + -e '/^#[ ]*define[ ]/b' \ + -e '/^#[ ]*if[ ]/b' \ + -e '/^#[ ]*ifdef[ ]/b' \ + -e '/^#[ ]*ifndef[ ]/b' \ + -e '/^#[ ]*else/b' \ + -e '/^#[ ]*elif[ ]/b' \ + -e '/^#[ ]*undef[ ]/b' \ + -e '/^#[ ]*endif/b' \ + -e 's/^[ ]*#.*//' \ + %s | %_ %_ %s", +# else + sv_setpvf(cmd, "\ +%s %s -e '/^[^#]/b' \ -e '/^#[ ]*include[ ]/b' \ -e '/^#[ ]*define[ ]/b' \ -e '/^#[ ]*if[ ]/b' \ -e '/^#[ ]*ifdef[ ]/b' \ -e '/^#[ ]*ifndef[ ]/b' \ -e '/^#[ ]*else/b' \ + -e '/^#[ ]*elif[ ]/b' \ + -e '/^#[ ]*undef[ ]/b' \ -e '/^#[ ]*endif/b' \ - -e 's/^#.*//' \ - %s | %s -C %s %s", -#ifdef MSDOS - "", + -e 's/^[ ]*#.*//' \ + %s | %_ -C %_ %s", +# endif +#ifdef LOC_SED + LOC_SED, #else - "/bin/", + "sed", #endif - (doextract ? "-e '1,/^#/d\n'" : ""), - argv[0], CPPSTDIN, str_get(str), CPPMINUS); -#ifdef DEBUGGING - if (debug & 64) { - fputs(buf,stderr); - fputs("\n",stderr); - } + (PL_doextract ? "-e '1,/^#/d\n'" : ""), #endif - doextract = FALSE; + scriptname, cpp, sv, CPPMINUS); + PL_doextract = FALSE; #ifdef IAMSUID /* actually, this is caught earlier */ - if (euid != uid && !euid) /* if running suidperl */ + if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */ #ifdef HAS_SETEUID - (void)seteuid(uid); /* musn't stay setuid root */ + (void)seteuid(PL_uid); /* musn't stay setuid root */ #else #ifdef HAS_SETREUID - (void)setreuid(-1, uid); + (void)setreuid((Uid_t)-1, PL_uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1); #else - setuid(uid); + PerlProc_setuid(PL_uid); #endif #endif +#endif + if (PerlProc_geteuid() != PL_uid) + croak("Can't do seteuid!\n"); + } #endif /* IAMSUID */ - rsfp = mypopen(buf,"r"); + PL_rsfp = PerlProc_popen(SvPVX(cmd), "r"); + SvREFCNT_dec(cmd); + SvREFCNT_dec(cpp); } - else if (!*argv[0]) - rsfp = stdin; - else - rsfp = fopen(argv[0],"r"); - if (rsfp == Nullfp) { + else if (!*scriptname) { + forbid_setid("program input from stdin"); + PL_rsfp = PerlIO_stdin(); + } + else { + PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); +#if defined(HAS_FCNTL) && defined(F_SETFD) + if (PL_rsfp) + fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ +#endif + } + if (!PL_rsfp) { #ifdef DOSUID #ifndef IAMSUID /* in case script is not readable before setuid */ - if (euid && stat(stab_val(curcmd->c_filestab)->str_ptr,&statbuf) >= 0 && - statbuf.st_mode & (S_ISUID|S_ISGID)) { - (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't do setuid\n"); + if (PL_euid && + PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 && + PL_statbuf.st_mode & (S_ISUID|S_ISGID)) + { + /* try again */ + PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv); + croak("Can't do setuid\n"); } #endif #endif - fatal("Can't open perl script \"%s\": %s\n", - stab_val(curcmd->c_filestab)->str_ptr, strerror(errno)); + croak("Can't open perl script \"%s\": %s\n", + SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno)); } - str_free(str); /* free -I directories */ - str = Nullstr; +} + +STATIC void +validate_suid(char *validarg, char *scriptname, int fdscript) +{ + int which; /* do we need to emulate setuid on scripts? */ @@ -385,20 +2130,17 @@ setuid perl scripts securely.\n"); * DOSUID must be defined in both perl and suidperl, and IAMSUID must * be defined in suidperl only. suidperl must be setuid root. The * Configure script will set this up for you if you want it. - * - * There is also the possibility of have a script which is running - * set-id due to a C wrapper. We want to do the TAINT checks - * on these set-id scripts, but don't want to have the overhead of - * them in normal perl, and can't use suidperl because it will lose - * the effective uid info, so we have an additional non-setuid root - * version called taintperl or tperlN.NNN that just does the TAINT checks. */ #ifdef DOSUID - if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ - fatal("Can't stat script \"%s\"",origfilename); - if (statbuf.st_mode & (S_ISUID|S_ISGID)) { - int len; + dTHR; + char *s, *s2; + + if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ + croak("Can't stat script \"%s\"",PL_origfilename); + if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { + I32 len; + STRLEN n_a; #ifdef IAMSUID #ifndef HAS_SETREUID @@ -410,8 +2152,8 @@ setuid perl scripts securely.\n"); * But I don't think it's too important. The manual lies when * it says access() is useful in setuid programs. */ - if (access(stab_val(curcmd->c_filestab)->str_ptr,1)) /*double check*/ - fatal("Permission denied"); + if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/ + croak("Permission denied"); #else /* If we can swap euid and uid, then we can determine access rights * with a simple stat of the file, and then compare device and @@ -421,47 +2163,65 @@ setuid perl scripts securely.\n"); { struct stat tmpstatbuf; - if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) - fatal("Can't swap uid and euid"); /* really paranoid */ - if (stat(stab_val(curcmd->c_filestab)->str_ptr,&tmpstatbuf) < 0) - fatal("Permission denied"); /* testing full pathname here */ - if (tmpstatbuf.st_dev != statbuf.st_dev || - tmpstatbuf.st_ino != statbuf.st_ino) { - (void)fclose(rsfp); - if (rsfp = mypopen("/bin/mail root","w")) { /* heh, heh */ - fprintf(rsfp, -"User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ -(Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", - uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, - statbuf.st_dev, statbuf.st_ino, - stab_val(curcmd->c_filestab)->str_ptr, - statbuf.st_uid, statbuf.st_gid); - (void)mypclose(rsfp); + if ( +#ifdef HAS_SETREUID + setreuid(PL_euid,PL_uid) < 0 +#else +# if HAS_SETRESUID + setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0 +# endif +#endif + || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid) + croak("Can't swap uid and euid"); /* really paranoid */ + if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0) + croak("Permission denied"); /* testing full pathname here */ + if (tmpstatbuf.st_dev != PL_statbuf.st_dev || + tmpstatbuf.st_ino != PL_statbuf.st_ino) { + (void)PerlIO_close(PL_rsfp); + if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */ + PerlIO_printf(PL_rsfp, +"User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ +(Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n", + (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, + (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino, + SvPVX(GvSV(PL_curcop->cop_filegv)), + (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid); + (void)PerlProc_pclose(PL_rsfp); } - fatal("Permission denied\n"); + croak("Permission denied\n"); } - if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) - fatal("Can't reswap uid and euid"); - if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ - fatal("Permission denied\n"); + if ( +#ifdef HAS_SETREUID + setreuid(PL_uid,PL_euid) < 0 +#else +# if defined(HAS_SETRESUID) + setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0 +# endif +#endif + || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid) + croak("Can't reswap uid and euid"); + if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ + croak("Permission denied\n"); } #endif /* HAS_SETREUID */ #endif /* IAMSUID */ - if (!S_ISREG(statbuf.st_mode)) - fatal("Permission denied"); - if (statbuf.st_mode & S_IWOTH) - fatal("Setuid/gid script is writable by world"); - doswitches = FALSE; /* -s is insecure in suid */ - curcmd->c_line++; - if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || - strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ - fatal("No #! line"); - s = tokenbuf+2; + if (!S_ISREG(PL_statbuf.st_mode)) + croak("Permission denied"); + if (PL_statbuf.st_mode & S_IWOTH) + croak("Setuid/gid script is writable by world"); + PL_doswitches = FALSE; /* -s is insecure in suid */ + PL_curcop->cop_line++; + if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch || + strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */ + croak("No #! line"); + s = SvPV(PL_linestr,n_a)+2; if (*s == ' ') s++; - while (!isspace(*s)) s++; - if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ - fatal("Not a perl script"); + while (!isSPACE(*s)) s++; + for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 && + (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; + if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ + croak("Not a perl script"); while (*s == ' ' || *s == '\t') s++; /* * #! arg must be what we saw above. They can invoke it by @@ -470,744 +2230,807 @@ setuid perl scripts securely.\n"); */ len = strlen(validarg); if (strEQ(validarg," PHOOEY ") || - strnNE(s,validarg,len) || !isspace(s[len])) - fatal("Args must match #! line"); + strnNE(s,validarg,len) || !isSPACE(s[len])) + croak("Args must match #! line"); #ifndef IAMSUID - if (euid != uid && (statbuf.st_mode & S_ISUID) && - euid == statbuf.st_uid) - if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ + if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && + PL_euid == PL_statbuf.st_uid) + if (!PL_do_undump) + croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); #endif /* IAMSUID */ - if (euid) { /* oops, we're not the setuid root perl */ - (void)fclose(rsfp); + if (PL_euid) { /* oops, we're not the setuid root perl */ + (void)PerlIO_close(PL_rsfp); #ifndef IAMSUID - (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ + /* try again */ + PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv); #endif - fatal("Can't do setuid\n"); + croak("Can't do setuid\n"); } - if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) + if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { #ifdef HAS_SETEGID - (void)setegid(statbuf.st_gid); + (void)setegid(PL_statbuf.st_gid); #else #ifdef HAS_SETREGID - (void)setregid((GIDTYPE)-1,statbuf.st_gid); + (void)setregid((Gid_t)-1,PL_statbuf.st_gid); +#else +#ifdef HAS_SETRESGID + (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1); #else - setgid(statbuf.st_gid); + PerlProc_setgid(PL_statbuf.st_gid); #endif #endif - if (statbuf.st_mode & S_ISUID) { - if (statbuf.st_uid != euid) +#endif + if (PerlProc_getegid() != PL_statbuf.st_gid) + croak("Can't do setegid!\n"); + } + if (PL_statbuf.st_mode & S_ISUID) { + if (PL_statbuf.st_uid != PL_euid) #ifdef HAS_SETEUID - (void)seteuid(statbuf.st_uid); /* all that for this */ + (void)seteuid(PL_statbuf.st_uid); /* all that for this */ #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,statbuf.st_uid); + (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); #else - setuid(statbuf.st_uid); +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1); +#else + PerlProc_setuid(PL_statbuf.st_uid); +#endif #endif #endif + if (PerlProc_geteuid() != PL_statbuf.st_uid) + croak("Can't do seteuid!\n"); } - else if (uid) /* oops, mustn't run as root */ + else if (PL_uid) { /* oops, mustn't run as root */ #ifdef HAS_SETEUID - (void)seteuid((UIDTYPE)uid); + (void)seteuid((Uid_t)PL_uid); #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); + (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); #else - setuid((UIDTYPE)uid); +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1); +#else + PerlProc_setuid((Uid_t)PL_uid); +#endif #endif #endif - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); - if (!cando(S_IXUSR,TRUE,&statbuf)) - fatal("Permission denied\n"); /* they can't do this */ + if (PerlProc_geteuid() != PL_uid) + croak("Can't do seteuid!\n"); + } + init_ids(); + if (!cando(S_IXUSR,TRUE,&PL_statbuf)) + croak("Permission denied\n"); /* they can't do this */ } #ifdef IAMSUID - else if (preprocess) - fatal("-P not allowed for setuid/setgid script\n"); + else if (PL_preprocess) + croak("-P not allowed for setuid/setgid script\n"); + else if (fdscript >= 0) + croak("fd script not allowed in suidperl\n"); else - fatal("Script is not setuid/setgid in suidperl\n"); -#else -#ifndef TAINT /* we aren't taintperl or suidperl */ - /* script has a wrapper--can't run suidperl or we lose euid */ - else if (euid != uid || egid != gid) { - (void)fclose(rsfp); - (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); - } -#endif /* TAINT */ + croak("Script is not setuid/setgid in suidperl\n"); + + /* We absolutely must clear out any saved ids here, so we */ + /* exec the real perl, substituting fd script for scriptname. */ + /* (We pass script name as "subdir" of fd, which perl will grok.) */ + PerlIO_rewind(PL_rsfp); + PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ + for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; + if (!PL_origargv[which]) + croak("Permission denied"); + PL_origargv[which] = savepv(form("/dev/fd/%d/%s", + PerlIO_fileno(PL_rsfp), PL_origargv[which])); +#if defined(HAS_FCNTL) && defined(F_SETFD) + fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ +#endif + PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */ + croak("Can't do setuid\n"); #endif /* IAMSUID */ #else /* !DOSUID */ -#ifndef TAINT /* we aren't taintperl or suidperl */ - if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ + if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW - fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ - if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) + dTHR; + PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */ + if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID) || - (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) + (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) ) - if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ + if (!PL_do_undump) + croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ /* not set-id, must be wrapped */ - (void)fclose(rsfp); - (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); } -#endif /* TAINT */ #endif /* DOSUID */ +} -#if !defined(IAMSUID) && !defined(TAINT) +STATIC void +find_beginning(void) +{ + register char *s, *s2; /* skip forward in input to the real script? */ - while (doextract) { - if ((s = str_gets(linestr, rsfp, 0)) == Nullch) - fatal("No Perl script found in input\n"); - if (*s == '#' && s[1] == '!' && instr(s,"perl")) { - ungetc('\n',rsfp); /* to keep line count right */ - doextract = FALSE; - if (s = instr(s,"perl -")) { - s += 6; - while (s = moreswitches(s)) ; + forbid_setid("-x"); + while (PL_doextract) { + if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) + croak("No Perl script found in input\n"); + if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { + PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */ + PL_doextract = FALSE; + while (*s && !(isSPACE (*s) || *s == '#')) s++; + s2 = s; + while (*s == ' ' || *s == '\t') s++; + if (*s++ == '-') { + while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; + if (strnEQ(s2-4,"perl",4)) + /*SUPPRESS 530*/ + while (s = moreswitches(s)) ; } - if (cddir && chdir(cddir) < 0) - fatal("Can't chdir to %s",cddir); + if (PL_cddir && PerlDir_chdir(PL_cddir) < 0) + croak("Can't chdir to %s",PL_cddir); } } -#endif /* !defined(IAMSUID) && !defined(TAINT) */ - - defstab = stabent("_",TRUE); - - if (perldb) { - debstash = hnew(0); - stab_xhash(stabent("_DB",TRUE)) = debstash; - curstash = debstash; - dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE)))); - tmpstab->str_pok |= SP_MULTI; - dbargs->ary_flags = 0; - subname = str_make("main",4); - DBstab = stabent("DB",TRUE); - DBstab->str_pok |= SP_MULTI; - DBline = stabent("dbline",TRUE); - DBline->str_pok |= SP_MULTI; - DBsub = hadd(tmpstab = stabent("sub",TRUE)); - tmpstab->str_pok |= SP_MULTI; - DBsingle = stab_val((tmpstab = stabent("single",TRUE))); - tmpstab->str_pok |= SP_MULTI; - DBtrace = stab_val((tmpstab = stabent("trace",TRUE))); - tmpstab->str_pok |= SP_MULTI; - DBsignal = stab_val((tmpstab = stabent("signal",TRUE))); - tmpstab->str_pok |= SP_MULTI; - curstash = defstash; - } - - /* init tokener */ - - bufend = bufptr = str_get(linestr); - - savestack = anew(Nullstab); /* for saving non-local values */ - stack = anew(Nullstab); /* for saving non-local values */ - stack->ary_flags = 0; /* not a real array */ - afill(stack,63); afill(stack,-1); /* preextend stack */ - afill(savestack,63); afill(savestack,-1); +} - /* now parse the script */ - error_count = 0; - if (yyparse() || error_count) { - if (minus_c) - fatal("%s had compilation errors.\n", origfilename); - else { - fatal("Execution of %s aborted due to compilation errors.\n", - origfilename); - } +STATIC void +init_ids(void) +{ + PL_uid = (int)PerlProc_getuid(); + PL_euid = (int)PerlProc_geteuid(); + PL_gid = (int)PerlProc_getgid(); + PL_egid = (int)PerlProc_getegid(); +#ifdef VMS + PL_uid |= PL_gid << 16; + PL_euid |= PL_egid << 16; +#endif + PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); +} + +STATIC void +forbid_setid(char *s) +{ + if (PL_euid != PL_uid) + croak("No %s allowed while running setuid", s); + if (PL_egid != PL_gid) + croak("No %s allowed while running setgid", s); +} + +STATIC void +init_debugger(void) +{ + dTHR; + PL_curstash = PL_debstash; + PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); + AvREAL_off(PL_dbargs); + PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); + PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); + PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); + PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); + sv_setiv(PL_DBsingle, 0); + PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); + sv_setiv(PL_DBtrace, 0); + PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); + sv_setiv(PL_DBsignal, 0); + PL_curstash = PL_defstash; +} + +#ifndef STRESS_REALLOC +#define REASONABLE(size) (size) +#else +#define REASONABLE(size) (1) /* unreasonable */ +#endif + +void +init_stacks(ARGSproto) +{ + /* start with 128-item stack and 8K cxstack */ + PL_curstackinfo = new_stackinfo(REASONABLE(128), + REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); + PL_curstackinfo->si_type = PERLSI_MAIN; + PL_curstack = PL_curstackinfo->si_stack; + PL_mainstack = PL_curstack; /* remember in case we switch stacks */ + + PL_stack_base = AvARRAY(PL_curstack); + PL_stack_sp = PL_stack_base; + PL_stack_max = PL_stack_base + AvMAX(PL_curstack); + + New(50,PL_tmps_stack,REASONABLE(128),SV*); + PL_tmps_floor = -1; + PL_tmps_ix = -1; + PL_tmps_max = REASONABLE(128); + + New(54,PL_markstack,REASONABLE(32),I32); + PL_markstack_ptr = PL_markstack; + PL_markstack_max = PL_markstack + REASONABLE(32); + + SET_MARKBASE; + + New(54,PL_scopestack,REASONABLE(32),I32); + PL_scopestack_ix = 0; + PL_scopestack_max = REASONABLE(32); + + New(54,PL_savestack,REASONABLE(128),ANY); + PL_savestack_ix = 0; + PL_savestack_max = REASONABLE(128); + + New(54,PL_retstack,REASONABLE(16),OP*); + PL_retstack_ix = 0; + PL_retstack_max = REASONABLE(16); +} + +#undef REASONABLE + +STATIC void +nuke_stacks(void) +{ + dTHR; + while (PL_curstackinfo->si_next) + PL_curstackinfo = PL_curstackinfo->si_next; + while (PL_curstackinfo) { + PERL_SI *p = PL_curstackinfo->si_prev; + /* curstackinfo->si_stack got nuked by sv_free_arenas() */ + Safefree(PL_curstackinfo->si_cxstack); + Safefree(PL_curstackinfo); + PL_curstackinfo = p; } + Safefree(PL_tmps_stack); + Safefree(PL_markstack); + Safefree(PL_scopestack); + Safefree(PL_savestack); + Safefree(PL_retstack); + DEBUG( { + Safefree(PL_debname); + Safefree(PL_debdelim); + } ) +} - New(50,loop_stack,128,struct loop); -#ifdef DEBUGGING - if (debug) { - New(51,debname,128,char); - New(52,debdelim,128,char); - } -#endif - curstash = defstash; - - preprocess = FALSE; - if (e_fp) { - e_fp = Nullfp; - (void)UNLINK(e_tmpname); - } - - /* initialize everything that won't change if we undump */ - - if (sigstab = stabent("SIG",allstabs)) { - sigstab->str_pok |= SP_MULTI; - (void)hadd(sigstab); - } - - magicalize("!#?^~=-%.+&*()<>,\\/[|`':\004\t\024\027"); - userinit(); /* in case linked C routines want magical variables */ - - amperstab = stabent("&",allstabs); - leftstab = stabent("`",allstabs); - rightstab = stabent("'",allstabs); - sawampersand = (amperstab || leftstab || rightstab); - if (tmpstab = stabent(":",allstabs)) - str_set(STAB_STR(tmpstab),chopset); - if (tmpstab = stabent("\024",allstabs)) - time(&basetime); - - /* these aren't necessarily magical */ - if (tmpstab = stabent(";",allstabs)) - str_set(STAB_STR(tmpstab),"\034"); - if (tmpstab = stabent("]",allstabs)) { - str = STAB_STR(tmpstab); - str_set(str,rcsid); - str->str_u.str_nval = atof(patchlevel); - str->str_nok = 1; - } - str_nset(stab_val(stabent("\"", TRUE)), " ", 1); - - stdinstab = stabent("STDIN",TRUE); - stdinstab->str_pok |= SP_MULTI; - stab_io(stdinstab) = stio_new(); - stab_io(stdinstab)->ifp = stdin; - tmpstab = stabent("stdin",TRUE); - stab_io(tmpstab) = stab_io(stdinstab); - tmpstab->str_pok |= SP_MULTI; - - tmpstab = stabent("STDOUT",TRUE); - tmpstab->str_pok |= SP_MULTI; - stab_io(tmpstab) = stio_new(); - stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; - defoutstab = tmpstab; - tmpstab = stabent("stdout",TRUE); - stab_io(tmpstab) = stab_io(defoutstab); - tmpstab->str_pok |= SP_MULTI; - - curoutstab = stabent("STDERR",TRUE); - curoutstab->str_pok |= SP_MULTI; - stab_io(curoutstab) = stio_new(); - stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; - tmpstab = stabent("stderr",TRUE); - stab_io(tmpstab) = stab_io(curoutstab); - tmpstab->str_pok |= SP_MULTI; - curoutstab = defoutstab; /* switch back to STDOUT */ - - statname = Str_new(66,0); /* last filename we did stat on */ +#ifndef PERL_OBJECT +static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ +#endif - /* now that script is parsed, we can modify record separator */ +STATIC void +init_lexer(void) +{ +#ifdef PERL_OBJECT + PerlIO *tmpfp; +#endif + tmpfp = PL_rsfp; + PL_rsfp = Nullfp; + lex_start(PL_linestr); + PL_rsfp = tmpfp; + PL_subname = newSVpv("main",4); +} - rs = nrs; - rslen = nrslen; - rschar = nrschar; - str_nset(stab_val(stabent("/", TRUE)), rs, rslen); +STATIC void +init_predump_symbols(void) +{ + dTHR; + GV *tmpgv; + GV *othergv; + + sv_setpvn(perl_get_sv("\"", TRUE), " ", 1); + PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); + GvMULTI_on(PL_stdingv); + IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin(); + tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv)); + + tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); + GvMULTI_on(tmpgv); + IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout(); + setdefout(tmpgv); + tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv)); + + othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); + GvMULTI_on(othergv); + IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr(); + tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); + GvMULTI_on(tmpgv); + GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); + + PL_statname = NEWSV(66,0); /* last filename we did stat on */ + + if (!PL_osname) + PL_osname = savepv(OSNAME); +} - if (do_undump) - my_unexec(); +STATIC void +init_postdump_symbols(register int argc, register char **argv, register char **env) +{ + dTHR; + char *s; + SV *sv; + GV* tmpgv; - just_doit: /* come here if running an undumped a.out */ argc--,argv++; /* skip name of script */ - if (doswitches) { + if (PL_doswitches) { for (; argc > 0 && **argv == '-'; argc--,argv++) { + if (!argv[0][1]) + break; if (argv[0][1] == '-') { argc--,argv++; break; } - if (s = index(argv[0], '=')) { + if (s = strchr(argv[0], '=')) { *s++ = '\0'; - str_set(stab_val(stabent(argv[0]+1,TRUE)),s); + sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); } else - str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); + sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); } } -#ifdef TAINT - tainted = 1; -#endif - if (tmpstab = stabent("0",allstabs)) { - str_set(stab_val(tmpstab),origfilename); - magicname("0", Nullch, 0); + PL_toptarget = NEWSV(0,0); + sv_upgrade(PL_toptarget, SVt_PVFM); + sv_setpvn(PL_toptarget, "", 0); + PL_bodytarget = NEWSV(0,0); + sv_upgrade(PL_bodytarget, SVt_PVFM); + sv_setpvn(PL_bodytarget, "", 0); + PL_formtarget = PL_bodytarget; + + TAINT; + if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { + sv_setpv(GvSV(tmpgv),PL_origfilename); + magicname("0", "0", 1); } - if (tmpstab = stabent("\020",allstabs)) - str_set(stab_val(tmpstab),origargv[0]); - if (argvstab = stabent("ARGV",allstabs)) { - argvstab->str_pok |= SP_MULTI; - (void)aadd(argvstab); - aclear(stab_array(argvstab)); + if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) + sv_setpv(GvSV(tmpgv),PL_origargv[0]); + if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { + GvMULTI_on(PL_argvgv); + (void)gv_AVadd(PL_argvgv); + av_clear(GvAVn(PL_argvgv)); for (; argc > 0; argc--,argv++) { - (void)apush(stab_array(argvstab),str_make(argv[0],0)); + av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0)); } } -#ifdef TAINT - (void) stabent("ENV",TRUE); /* must test PATH and IFS */ -#endif - if (envstab = stabent("ENV",allstabs)) { - envstab->str_pok |= SP_MULTI; - (void)hadd(envstab); - hclear(stab_hash(envstab), FALSE); + if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { + HV *hv; + GvMULTI_on(PL_envgv); + hv = GvHVn(PL_envgv); + hv_magic(hv, PL_envgv, 'E'); +#ifndef VMS /* VMS doesn't have environ array */ + /* Note that if the supplied env parameter is actually a copy + of the global environ then it may now point to free'd memory + if the environment has been modified since. To avoid this + problem we treat env==NULL as meaning 'use the default' + */ + if (!env) + env = environ; if (env != environ) environ[0] = Nullch; for (; *env; env++) { - if (!(s = index(*env,'='))) + if (!(s = strchr(*env,'='))) continue; *s++ = '\0'; - str = str_make(s--,0); - str_magic(str, envstab, 'E', *env, s - *env); - (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); +#if defined(MSDOS) + (void)strupr(*env); +#endif + sv = newSVpv(s--,0); + (void)hv_store(hv, *env, s - *env, sv, 0); *s = '='; +#if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV) + /* Sins of the RTL. See note in my_setenv(). */ + (void)PerlEnv_putenv(savepv(*env)); +#endif } - } -#ifdef TAINT - tainted = 0; #endif - if (tmpstab = stabent("$",allstabs)) - str_numset(STAB_STR(tmpstab),(double)getpid()); - - if (dowarn) { - stab_check('A','Z'); - stab_check('a','z'); - } - - if (setjmp(top_env)) /* sets goto_targ on longjump */ - loop_ptr = -1; /* start label stack again */ - -#ifdef DEBUGGING - if (debug & 1024) - dump_all(); - if (debug) - fprintf(stderr,"\nEXECUTING...\n\n"); +#ifdef DYNAMIC_ENV_FETCH + HvNAME(hv) = savepv(ENV_HV_NAME); #endif - - if (minus_c) { - fprintf(stderr,"%s syntax OK\n", origfilename); - exit(0); } - - /* do it */ - - (void) cmd_exec(main_root,G_SCALAR,-1); - - if (goto_targ) - fatal("Can't find label \"%s\"--aborting",goto_targ); - exit(0); - /* NOTREACHED */ + TAINT_NOT; + if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) + sv_setiv(GvSV(tmpgv), (IV)getpid()); } -void -magicalize(list) -register char *list; +STATIC void +init_perllib(void) { - char sym[2]; + char *s; + if (!PL_tainting) { +#ifndef VMS + s = PerlEnv_getenv("PERL5LIB"); + if (s) + incpush(s, TRUE); + else + incpush(PerlEnv_getenv("PERLLIB"), FALSE); +#else /* VMS */ + /* Treat PERL5?LIB as a possible search list logical name -- the + * "natural" VMS idiom for a Unix path string. We allow each + * element to be a set of |-separated directories for compatibility. + */ + char buf[256]; + int idx = 0; + if (my_trnlnm("PERL5LIB",buf,0)) + do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); + else + while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE); +#endif /* VMS */ + } - sym[1] = '\0'; - while (*sym = *list++) - magicname(sym, Nullch, 0); -} +/* Use the ~-expanded versions of APPLLIB (undocumented), + ARCHLIB PRIVLIB SITEARCH and SITELIB +*/ +#ifdef APPLLIB_EXP + incpush(APPLLIB_EXP, TRUE); +#endif -void -magicname(sym,name,namlen) -char *sym; -char *name; -int namlen; -{ - register STAB *stab; +#ifdef ARCHLIB_EXP + incpush(ARCHLIB_EXP, FALSE); +#endif +#ifndef PRIVLIB_EXP +#define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" +#endif +#if defined(WIN32) + incpush(PRIVLIB_EXP, TRUE); +#else + incpush(PRIVLIB_EXP, FALSE); +#endif - if (stab = stabent(sym,allstabs)) { - stab_flags(stab) = SF_VMAGIC; - str_magic(stab_val(stab), stab, 0, name, namlen); - } +#ifdef SITEARCH_EXP + incpush(SITEARCH_EXP, FALSE); +#endif +#ifdef SITELIB_EXP +#if defined(WIN32) + incpush(SITELIB_EXP, TRUE); +#else + incpush(SITELIB_EXP, FALSE); +#endif +#endif + if (!PL_tainting) + incpush(".", FALSE); } -/* this routine is in perl.c by virtue of being sort of an alternate main() */ +#if defined(DOSISH) +# define PERLLIB_SEP ';' +#else +# if defined(VMS) +# define PERLLIB_SEP '|' +# else +# define PERLLIB_SEP ':' +# endif +#endif +#ifndef PERLLIB_MANGLE +# define PERLLIB_MANGLE(s,n) (s) +#endif -int -do_eval(str,optype,stash,gimme,arglast) -STR *str; -int optype; -HASH *stash; -int gimme; -int *arglast; +STATIC void +incpush(char *p, int addsubdirs) { - STR **st = stack->ary_array; - int retval; - CMD *myroot = Nullcmd; - ARRAY *ar; - int i; - CMD * VOLATILE oldcurcmd = curcmd; - VOLATILE int oldtmps_base = tmps_base; - VOLATILE int oldsave = savestack->ary_fill; - VOLATILE int oldperldb = perldb; - SPAT * VOLATILE oldspat = curspat; - SPAT * VOLATILE oldlspat = lastspat; - static char *last_eval = Nullch; - static CMD *last_root = Nullcmd; - VOLATILE int sp = arglast[0]; - char *specfilename; - char *tmpfilename; - int parsing = 1; - - tmps_base = tmps_max; - if (curstash != stash) { - (void)savehptr(&curstash); - curstash = stash; - } - str_set(stab_val(stabent("@",TRUE)),""); - if (curcmd->c_line == 0) /* don't debug debugger... */ - perldb = FALSE; - curcmd = &compiling; - if (optype == O_EVAL) { /* normal eval */ - curcmd->c_filestab = fstab("(eval)"); - curcmd->c_line = 1; - str_sset(linestr,str); - str_cat(linestr,";"); /* be kind to them */ + SV *subdir = Nullsv; + + if (!p) + return; + + if (addsubdirs) { + subdir = sv_newmortal(); + if (!PL_archpat_auto) { + STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel) + + sizeof("//auto")); + New(55, PL_archpat_auto, len, char); + sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel); +#ifdef VMS + for (len = sizeof(ARCHNAME) + 2; + PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++) + if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_'; +#endif + } } - else { - if (last_root && !in_eval) { - Safefree(last_eval); - last_eval = Nullch; - cmd_free(last_root); - last_root = Nullcmd; + + /* Break at all separators */ + while (p && *p) { + SV *libdir = NEWSV(55,0); + char *s; + + /* skip any consecutive separators */ + while ( *p == PERLLIB_SEP ) { + /* Uncomment the next line for PATH semantics */ + /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */ + p++; } - specfilename = str_get(str); - str_set(linestr,""); - if (optype == O_REQUIRE && &str_undef != - hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { - curcmd = oldcurcmd; - tmps_base = oldtmps_base; - st[++sp] = &str_yes; - perldb = oldperldb; - return sp; + + if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { + sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), + (STRLEN)(s - p)); + p = s + 1; } - tmpfilename = savestr(specfilename); - if (index("/.", *tmpfilename)) - rsfp = fopen(tmpfilename,"r"); else { - ar = stab_array(incstab); - for (i = 0; i <= ar->ary_fill; i++) { - (void)sprintf(buf, "%s/%s", - str_get(afetch(ar,i,TRUE)), specfilename); - rsfp = fopen(buf,"r"); - if (rsfp) { - char *s = buf; - - if (*s == '.' && s[1] == '/') - s += 2; - Safefree(tmpfilename); - tmpfilename = savestr(s); - break; - } - } + sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); + p = Nullch; /* break out */ } - curcmd->c_filestab = fstab(tmpfilename); - Safefree(tmpfilename); - tmpfilename = Nullch; - if (!rsfp) { - curcmd = oldcurcmd; - tmps_base = oldtmps_base; - if (optype == O_REQUIRE) { - sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); - if (instr(tokenbuf,".h ")) - strcat(tokenbuf," (change .h to .ph maybe?)"); - if (instr(tokenbuf,".ph ")) - strcat(tokenbuf," (did you run h2ph?)"); - fatal("%s",tokenbuf); + + /* + * BEFORE pushing libdir onto @INC we may first push version- and + * archname-specific sub-directories. + */ + if (addsubdirs) { + struct stat tmpstatbuf; +#ifdef VMS + char *unix; + STRLEN len; + + if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) { + len = strlen(unix); + while (unix[len-1] == '/') len--; /* Cosmetic */ + sv_usepvn(libdir,unix,len); } - if (gimme != G_ARRAY) - st[++sp] = &str_undef; - perldb = oldperldb; - return sp; - } - curcmd->c_line = 0; - } - in_eval++; - oldoldbufptr = oldbufptr = bufptr = str_get(linestr); - bufend = bufptr + linestr->str_cur; - if (++loop_ptr >= loop_max) { - loop_max += 128; - Renew(loop_stack, loop_max, struct loop); - } - loop_stack[loop_ptr].loop_label = "_EVAL_"; - loop_stack[loop_ptr].loop_sp = sp; -#ifdef DEBUGGING - if (debug & 4) { - deb("(Pushing label #%d _EVAL_)\n", loop_ptr); - } + else + PerlIO_printf(PerlIO_stderr(), + "Failed to unixify @INC element \"%s\"\n", + SvPV(libdir,len)); #endif - eval_root = Nullcmd; - if (setjmp(loop_stack[loop_ptr].loop_env)) { - retval = 1; - } - else { - error_count = 0; - if (rsfp) { - retval = yyparse(); - retval |= error_count; - } - else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){ - retval = 0; - eval_root = last_root; /* no point in reparsing */ - } - else if (in_eval == 1) { - if (last_root) { - Safefree(last_eval); - last_eval = Nullch; - cmd_free(last_root); - } - last_root = Nullcmd; - last_eval = savestr(bufptr); - retval = yyparse(); - retval |= error_count; - if (!retval) - last_root = eval_root; - if (!last_root) { - Safefree(last_eval); - last_eval = Nullch; - } + /* .../archname/version if -d .../archname/version/auto */ + sv_setsv(subdir, libdir); + sv_catpv(subdir, PL_archpat_auto); + if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(PL_incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); + + /* .../archname if -d .../archname/auto */ + sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME), + strlen(PL_patchlevel) + 1, "", 0); + if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(PL_incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); } - else - retval = yyparse(); + + /* finally push this lib directory on the end of @INC */ + av_push(GvAVn(PL_incgv), libdir); } - myroot = eval_root; /* in case cmd_exec does another eval! */ +} - if (retval) { - st = stack->ary_array; - sp = arglast[0]; - if (gimme != G_ARRAY) - st[++sp] = &str_undef; - if (parsing) { -#ifndef MANGLEDPARSE -#ifdef DEBUGGING - if (debug & 128) - fprintf(stderr,"Freeing eval_root %lx\n",(long)eval_root); -#endif - cmd_free(eval_root); +#ifdef USE_THREADS +STATIC struct perl_thread * +init_main_thread() +{ + struct perl_thread *thr; + XPV *xpv; + + Newz(53, thr, 1, struct perl_thread); + PL_curcop = &PL_compiling; + thr->cvcache = newHV(); + thr->threadsv = newAV(); + /* thr->threadsvp is set when find_threadsv is called */ + thr->specific = newAV(); + thr->errhv = newHV(); + thr->flags = THRf_R_JOINABLE; + MUTEX_INIT(&thr->mutex); + /* Handcraft thrsv similarly to mess_sv */ + New(53, PL_thrsv, 1, SV); + Newz(53, xpv, 1, XPV); + SvFLAGS(PL_thrsv) = SVt_PV; + SvANY(PL_thrsv) = (void*)xpv; + SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */ + SvPVX(PL_thrsv) = (char*)thr; + SvCUR_set(PL_thrsv, sizeof(thr)); + SvLEN_set(PL_thrsv, sizeof(thr)); + *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */ + thr->oursv = PL_thrsv; + PL_chopset = " \n-"; + PL_dumpindent = 4; + + MUTEX_LOCK(&PL_threads_mutex); + PL_nthreads++; + thr->tid = 0; + thr->next = thr; + thr->prev = thr; + MUTEX_UNLOCK(&PL_threads_mutex); + +#ifdef HAVE_THREAD_INTERN + init_thread_intern(thr); #endif - if (eval_root == last_root) - last_root = Nullcmd; - eval_root = myroot = Nullcmd; - } - if (rsfp) { - fclose(rsfp); - rsfp = 0; - } - } - else { - parsing = 0; - sp = cmd_exec(eval_root,gimme,sp); - st = stack->ary_array; - for (i = arglast[0] + 1; i <= sp; i++) - st[i] = str_mortal(st[i]); - /* if we don't save result, free zaps it */ - if (in_eval != 1 && myroot != last_root) - cmd_free(myroot); - } - - perldb = oldperldb; - in_eval--; -#ifdef DEBUGGING - if (debug & 4) { - char *tmps = loop_stack[loop_ptr].loop_label; - deb("(Popping label #%d %s)\n",loop_ptr, - tmps ? tmps : "" ); - } -#endif - loop_ptr--; - tmps_base = oldtmps_base; - curspat = oldspat; - lastspat = oldlspat; - if (savestack->ary_fill > oldsave) /* let them use local() */ - restorelist(oldsave); - - if (optype != O_EVAL) { - if (retval) { - if (optype == O_REQUIRE) - fatal("%s", str_get(stab_val(stabent("@",TRUE)))); - } - else { - curcmd = oldcurcmd; - if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { - (void)hstore(stab_hash(incstab), specfilename, - strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)), - 0 ); + +#ifdef SET_THREAD_SELF + SET_THREAD_SELF(thr); +#else + thr->self = pthread_self(); +#endif /* SET_THREAD_SELF */ + SET_THR(thr); + + /* + * These must come after the SET_THR because sv_setpvn does + * SvTAINT and the taint fields require dTHR. + */ + PL_toptarget = NEWSV(0,0); + sv_upgrade(PL_toptarget, SVt_PVFM); + sv_setpvn(PL_toptarget, "", 0); + PL_bodytarget = NEWSV(0,0); + sv_upgrade(PL_bodytarget, SVt_PVFM); + sv_setpvn(PL_bodytarget, "", 0); + PL_formtarget = PL_bodytarget; + thr->errsv = newSVpv("", 0); + (void) find_threadsv("@"); /* Ensure $@ is initialised early */ + + PL_maxscream = -1; + PL_regcompp = FUNC_NAME_TO_PTR(pregcomp); + PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags); + PL_regindent = 0; + PL_reginterp_cnt = 0; + + return thr; +} +#endif /* USE_THREADS */ + +void +call_list(I32 oldscope, AV *paramList) +{ + dTHR; + line_t oldline = PL_curcop->cop_line; + STRLEN len; + dJMPENV; + int ret; + + while (AvFILL(paramList) >= 0) { + CV *cv = (CV*)av_shift(paramList); + + SAVEFREESV(cv); + + JMPENV_PUSH(ret); + switch (ret) { + case 0: { + SV* atsv = ERRSV; + PUSHMARK(PL_stack_sp); + perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); + (void)SvPV(atsv, len); + if (len) { + JMPENV_POP; + PL_curcop = &PL_compiling; + PL_curcop->cop_line = oldline; + if (paramList == PL_beginav) + sv_catpv(atsv, "BEGIN failed--compilation aborted"); + else + sv_catpv(atsv, "END failed--cleanup aborted"); + while (PL_scopestack_ix > oldscope) + LEAVE; + croak("%s", SvPVX(atsv)); + } + } + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + while (PL_scopestack_ix > oldscope) + LEAVE; + FREETMPS; + PL_curstash = PL_defstash; + if (PL_endav) + call_list(oldscope, PL_endav); + JMPENV_POP; + PL_curcop = &PL_compiling; + PL_curcop->cop_line = oldline; + if (PL_statusvalue) { + if (paramList == PL_beginav) + croak("BEGIN failed--compilation aborted"); + else + croak("END failed--cleanup aborted"); + } + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (!PL_restartop) { + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; + break; } - else if (optype == O_REQUIRE) - fatal("%s did not return a true value", specfilename); + JMPENV_POP; + PL_curcop = &PL_compiling; + PL_curcop->cop_line = oldline; + JMPENV_JUMP(3); } + JMPENV_POP; } - curcmd = oldcurcmd; - return sp; } -/* This routine handles any switches that can be given during run */ - -static char * -moreswitches(s) -char *s; +void +my_exit(U32 status) { - int numlen; + dTHR; - reswitch: - switch (*s) { - case '0': - nrschar = scanoct(s, 4, &numlen); - nrs = nsavestr("\n",1); - *nrs = nrschar; - if (nrschar > 0377) { - nrslen = 0; - nrs = ""; - } - else if (!nrschar && numlen >= 2) { - nrslen = 2; - nrs = "\n\n"; - nrschar = '\n'; - } - return s + numlen; - case 'a': - minus_a = TRUE; - s++; - return s; - case 'c': - minus_c = TRUE; - s++; - return s; - case 'd': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -d allowed in setuid scripts"); -#endif - perldb = TRUE; - s++; - return s; - case 'D': -#ifdef DEBUGGING -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -D allowed in setuid scripts"); -#endif - debug = atoi(s+1) | 32768; -#else - warn("Recompile perl with -DDEBUGGING to use -D switch\n"); -#endif - for (s++; isdigit(*s); s++) ; - return s; - case 'i': - inplace = savestr(s+1); - for (s = inplace; *s && !isspace(*s); s++) ; - *s = '\0'; - break; - case 'I': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif - if (*++s) { - (void)apush(stab_array(incstab),str_make(s,0)); - } - else - fatal("No space allowed after -I"); + DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", + thr, (unsigned long) status)); + switch (status) { + case 0: + STATUS_ALL_SUCCESS; break; - case 'l': - minus_l = TRUE; - s++; - if (isdigit(*s)) { - ors = savestr("\n"); - orslen = 1; - *ors = scanoct(s, 3 + (*s == '0'), &numlen); - s += numlen; - } - else { - ors = nsavestr(nrs,nrslen); - orslen = nrslen; - } - return s; - case 'n': - minus_n = TRUE; - s++; - return s; - case 'p': - minus_p = TRUE; - s++; - return s; - case 'u': - do_undump = TRUE; - s++; - return s; - case 'U': - unsafe = TRUE; - s++; - return s; - case 'v': - fputs("\nThis is perl, version 4.0\n\n",stdout); - fputs(rcsid,stdout); - fputs("\nCopyright (c) 1989, 1990, 1991, Larry Wall\n",stdout); -#ifdef MSDOS - fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", - stdout); -#ifdef OS2 - fputs("OS/2 port Copyright (c) 1990, Raymond Chen, Kai Uwe Rommel\n", - stdout); -#endif -#endif - fputs("\n\ -Perl may be copied only under the terms of the GNU General Public License,\n\ -a copy of which can be found with the Perl 4.0 distribution kit.\n",stdout); -#ifdef MSDOS - usage(origargv[0]); -#endif - exit(0); - case 'w': - dowarn = TRUE; - s++; - return s; - case ' ': - case '\n': - case '\t': + case 1: + STATUS_ALL_FAILURE; break; default: - fatal("Switch meaningless after -x: -%s",s); + STATUS_NATIVE_SET(status); + break; } - return Nullch; + my_exit_jump(); } -/* compliments of Tom Christiansen */ - -/* unexec() can be found in the Gnu emacs distribution */ +void +my_failure_exit(void) +{ +#ifdef VMS + if (vaxc$errno & 1) { + if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ + STATUS_NATIVE_SET(44); + } + else { + if (!vaxc$errno && errno) /* unlikely */ + STATUS_NATIVE_SET(44); + else + STATUS_NATIVE_SET(vaxc$errno); + } +#else + int exitstatus; + if (errno & 255) + STATUS_POSIX_SET(errno); + else { + exitstatus = STATUS_POSIX >> 8; + if (exitstatus & 255) + STATUS_POSIX_SET(exitstatus); + else + STATUS_POSIX_SET(255); + } +#endif + my_exit_jump(); +} -my_unexec() +STATIC void +my_exit_jump(void) { -#ifdef UNEXEC - int status; - extern int etext; - static char dumpname[BUFSIZ]; - static char perlpath[256]; + dTHR; + register PERL_CONTEXT *cx; + I32 gimme; + SV **newsp; + + if (PL_e_script) { + SvREFCNT_dec(PL_e_script); + PL_e_script = Nullsv; + } - sprintf (dumpname, "%s.perldump", origfilename); - sprintf (perlpath, "%s/perl", BIN); + POPSTACK_TO(PL_mainstack); + if (cxstack_ix >= 0) { + if (cxstack_ix > 0) + dounwind(0); + POPBLOCK(cx,PL_curpm); + LEAVE; + } + + JMPENV_JUMP(2); +} + +#ifdef PERL_OBJECT +#define NO_XSLOCKS +#endif /* PERL_OBJECT */ - status = unexec(dumpname, perlpath, &etext, sbrk(0), 0); - if (status) - fprintf(stderr, "unexec of %s into %s failed!\n", perlpath, dumpname); - exit(status); +#include "XSUB.h" + +static I32 +#ifdef PERL_OBJECT +read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen) #else -# ifndef SIGABRT -# define SIGABRT SIGILL -# endif -# ifndef SIGILL -# define SIGILL 6 /* blech */ -# endif - kill(getpid(),SIGABRT); /* for use with undump */ +read_e_script(int idx, SV *buf_sv, int maxlen) #endif +{ + char *p, *nl; + p = SvPVX(PL_e_script); + nl = strchr(p, '\n'); + nl = (nl) ? nl+1 : SvEND(PL_e_script); + if (nl-p == 0) { + filter_del(read_e_script); + return 0; + } + sv_catpvn(buf_sv, p, nl-p); + sv_chop(PL_e_script, nl); + return 1; } +