/* perl.c * * Copyright (c) 1987-2000 Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ /* * "A ship then new they built for him/of mithril and of elven glass" --Bilbo */ #include "EXTERN.h" #define PERL_IN_PERL_C #include "perl.h" #include "patchlevel.h" /* for local_patches */ /* 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 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen); #ifdef IAMSUID #ifndef DOSUID #define DOSUID #endif #endif #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW #ifdef DOSUID #undef DOSUID #endif #endif #ifdef PERL_OBJECT #define perl_construct Perl_construct #define perl_parse Perl_parse #define perl_run Perl_run #define perl_destruct Perl_destruct #define perl_free Perl_free #endif #if defined(USE_THREADS) # define INIT_TLS_AND_INTERP \ STMT_START { \ if (!PL_curinterp) { \ PERL_SET_INTERP(my_perl); \ INIT_THREADS; \ ALLOC_THREAD_KEY; \ } \ } STMT_END #else # if defined(USE_ITHREADS) # define INIT_TLS_AND_INTERP \ STMT_START { \ if (!PL_curinterp) { \ PERL_SET_INTERP(my_perl); \ INIT_THREADS; \ ALLOC_THREAD_KEY; \ PERL_SET_THX(my_perl); \ OP_REFCNT_INIT; \ } \ else { \ PERL_SET_THX(my_perl); \ } \ } STMT_END # else # define INIT_TLS_AND_INTERP \ STMT_START { \ if (!PL_curinterp) { \ PERL_SET_INTERP(my_perl); \ } \ PERL_SET_THX(my_perl); \ } STMT_END # endif #endif #ifdef PERL_IMPLICIT_SYS PerlInterpreter * perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS, struct IPerlMem* ipMP, struct IPerlEnv* ipE, struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, struct IPerlDir* ipD, struct IPerlSock* ipS, struct IPerlProc* ipP) { PerlInterpreter *my_perl; #ifdef PERL_OBJECT my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO, ipD, ipS, ipP); INIT_TLS_AND_INTERP; #else /* New() needs interpreter, so call malloc() instead */ my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); INIT_TLS_AND_INTERP; Zero(my_perl, 1, PerlInterpreter); PL_Mem = ipM; PL_MemShared = ipMS; PL_MemParse = ipMP; PL_Env = ipE; PL_StdIO = ipStd; PL_LIO = ipLIO; PL_Dir = ipD; PL_Sock = ipS; PL_Proc = ipP; #endif return my_perl; } #else /* =for apidoc perl_alloc Allocates a new Perl interpreter. See L. =cut */ PerlInterpreter * perl_alloc(void) { PerlInterpreter *my_perl; /* New() needs interpreter, so call malloc() instead */ my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); INIT_TLS_AND_INTERP; Zero(my_perl, 1, PerlInterpreter); return my_perl; } #endif /* PERL_IMPLICIT_SYS */ /* =for apidoc perl_construct Initializes a new Perl interpreter. See L. =cut */ void perl_construct(pTHXx) { #ifdef USE_THREADS int i; #ifndef FAKE_THREADS struct perl_thread *thr = NULL; #endif /* FAKE_THREADS */ #endif /* USE_THREADS */ #ifdef MULTIPLICITY init_interp(); PL_perl_destruct_level = 1; #else if (PL_perl_destruct_level > 0) init_interp(); #endif /* Init the real globals (and main thread)? */ if (!PL_linestr) { #ifdef USE_THREADS 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); MUTEX_INIT(&PL_sv_lock_mutex); MUTEX_INIT(&PL_fdpid_mutex); thr = init_main_thread(); #endif /* USE_THREADS */ #ifdef PERL_FLEXIBLE_EXCEPTIONS PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */ #endif 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 = Perl_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 = newSVpvn("\n", 1); PL_rs = SvREFCNT_inc(PL_nrs); init_stacks(); init_ids(); PL_lex_state = LEX_NOTPARSING; JMPENV_BOOTSTRAP; STATUS_ALL_SUCCESS; init_i18nl10n(1); SET_NUMERIC_STANDARD(); { U8 *s; PL_patchlevel = NEWSV(0,4); (void)SvUPGRADE(PL_patchlevel, SVt_PVNV); if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127) SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1); s = (U8*)SvPVX(PL_patchlevel); s = uv_to_utf8(s, (UV)PERL_REVISION); s = uv_to_utf8(s, (UV)PERL_VERSION); s = uv_to_utf8(s, (UV)PERL_SUBVERSION); *s = '\0'; SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel)); SvPOK_on(PL_patchlevel); SvNVX(PL_patchlevel) = (NV)PERL_REVISION + ((NV)PERL_VERSION / (NV)1000) #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0 + ((NV)PERL_SUBVERSION / (NV)1000000) #endif ; SvNOK_on(PL_patchlevel); /* dual valued */ SvUTF8_on(PL_patchlevel); SvREADONLY_on(PL_patchlevel); } #if defined(LOCAL_PATCH_COUNT) PL_localpatches = local_patches; /* For possible -v */ #endif #ifdef HAVE_INTERP_INTERN sys_intern_init(); #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 */ PL_errors = newSVpvn("",0); ENTER; } /* =for apidoc perl_destruct Shuts down a Perl interpreter. See L. =cut */ void perl_destruct(pTHXx) { dTHR; int destruct_level; /* 0=none, 1=full, 2=full with checks */ I32 last_sv_count; HV *hv; #ifdef USE_THREADS Thread t; dTHX; #endif /* USE_THREADS */ /* wait for all pseudo-forked children to finish */ PERL_WAIT_FOR_CHILDREN; #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(Perl_debug_log, "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(Perl_debug_log, "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(Perl_debug_log, "perl_destruct: joined zombie %p OK\n", t)); goto retry_cleanup; case THRf_R_JOINABLE: DEBUG_S(PerlIO_printf(Perl_debug_log, "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(Perl_debug_log, "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(Perl_debug_log, "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(Perl_debug_log, "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; /* 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; /* call exit list functions */ while (PL_exitlistlen-- > 0) PL_exitlist[PL_exitlistlen].fn(aTHXo_ 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_unsafe = FALSE; Safefree(PL_inplace); PL_inplace = Nullch; SvREFCNT_dec(PL_patchlevel); 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; /* $* */ Safefree(PL_osname); /* $^O */ PL_osname = Nullch; 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; /* float buffer */ Safefree(PL_efloatbuf); PL_efloatbuf = Nullch; PL_efloatsize = 0; /* startup and shutdown function lists */ SvREFCNT_dec(PL_beginav); SvREFCNT_dec(PL_endav); SvREFCNT_dec(PL_checkav); SvREFCNT_dec(PL_initav); PL_beginav = Nullav; PL_endav = Nullav; PL_checkav = Nullav; PL_initav = Nullav; /* shortcuts just get cleared */ PL_envgv = Nullgv; PL_incgv = Nullgv; PL_hintgv = Nullgv; PL_errgv = Nullgv; PL_argvgv = Nullgv; PL_argvoutgv = Nullgv; PL_stdingv = Nullgv; PL_stderrgv = Nullgv; PL_last_in_gv = Nullgv; PL_replgv = Nullgv; PL_debstash = Nullhv; /* reset so print() ends up where we expect */ setdefout(Nullgv); SvREFCNT_dec(PL_argvout_stack); PL_argvout_stack = Nullav; SvREFCNT_dec(PL_modglobal); PL_modglobal = Nullhv; SvREFCNT_dec(PL_preambleav); PL_preambleav = Nullav; SvREFCNT_dec(PL_subname); PL_subname = Nullsv; SvREFCNT_dec(PL_linestr); PL_linestr = Nullsv; SvREFCNT_dec(PL_pidstatus); PL_pidstatus = Nullhv; SvREFCNT_dec(PL_toptarget); PL_toptarget = Nullsv; SvREFCNT_dec(PL_bodytarget); PL_bodytarget = Nullsv; PL_formtarget = Nullsv; /* free locale stuff */ #ifdef USE_LOCALE_COLLATE Safefree(PL_collation_name); PL_collation_name = Nullch; #endif #ifdef USE_LOCALE_NUMERIC Safefree(PL_numeric_name); PL_numeric_name = Nullch; #endif /* clear utf8 character classes */ SvREFCNT_dec(PL_utf8_alnum); SvREFCNT_dec(PL_utf8_alnumc); SvREFCNT_dec(PL_utf8_ascii); SvREFCNT_dec(PL_utf8_alpha); SvREFCNT_dec(PL_utf8_space); SvREFCNT_dec(PL_utf8_cntrl); SvREFCNT_dec(PL_utf8_graph); SvREFCNT_dec(PL_utf8_digit); SvREFCNT_dec(PL_utf8_upper); SvREFCNT_dec(PL_utf8_lower); SvREFCNT_dec(PL_utf8_print); SvREFCNT_dec(PL_utf8_punct); SvREFCNT_dec(PL_utf8_xdigit); SvREFCNT_dec(PL_utf8_mark); SvREFCNT_dec(PL_utf8_toupper); SvREFCNT_dec(PL_utf8_tolower); PL_utf8_alnum = Nullsv; PL_utf8_alnumc = Nullsv; PL_utf8_ascii = Nullsv; PL_utf8_alpha = Nullsv; PL_utf8_space = Nullsv; PL_utf8_cntrl = Nullsv; PL_utf8_graph = Nullsv; PL_utf8_digit = Nullsv; PL_utf8_upper = Nullsv; PL_utf8_lower = Nullsv; PL_utf8_print = Nullsv; PL_utf8_punct = Nullsv; PL_utf8_xdigit = Nullsv; PL_utf8_mark = Nullsv; PL_utf8_toupper = Nullsv; PL_utf8_totitle = Nullsv; PL_utf8_tolower = Nullsv; if (!specialWARN(PL_compiling.cop_warnings)) SvREFCNT_dec(PL_compiling.cop_warnings); PL_compiling.cop_warnings = Nullsv; #ifdef USE_ITHREADS Safefree(CopFILE(&PL_compiling)); CopFILE(&PL_compiling) = Nullch; Safefree(CopSTASHPV(&PL_compiling)); #else SvREFCNT_dec(CopFILEGV(&PL_compiling)); CopFILEGV(&PL_compiling) = Nullgv; /* cop_stash is not refcounted */ #endif /* Prepare to destruct main symbol table. */ hv = PL_defstash; PL_defstash = 0; SvREFCNT_dec(hv); SvREFCNT_dec(PL_curstname); PL_curstname = Nullsv; /* clear queued errors */ SvREFCNT_dec(PL_errors); PL_errors = Nullsv; FREETMPS; if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) { if (PL_scopestack_ix != 0) Perl_warner(aTHX_ WARN_INTERNAL, "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", (long)PL_scopestack_ix); if (PL_savestack_ix != 0) Perl_warner(aTHX_ WARN_INTERNAL, "Unbalanced saves: %ld more saves than restores\n", (long)PL_savestack_ix); if (PL_tmps_floor != -1) Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n", (long)PL_tmps_floor + 1); if (cxstack_ix != -1) Perl_warner(aTHX_ WARN_INTERNAL,"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_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */ 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_fdpid) &= ~SVTYPEMASK; SvFLAGS(PL_fdpid) |= SVt_PVAV; SvFLAGS(PL_strtab) &= ~SVTYPEMASK; SvFLAGS(PL_strtab) |= SVt_PVHV; AvREAL_off(PL_fdpid); /* no surviving entries */ SvREFCNT_dec(PL_fdpid); /* needed in io_close() */ PL_fdpid = Nullav; #ifdef HAVE_INTERP_INTERN sys_intern_clear(); #endif /* 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 && ckWARN_d(WARN_INTERNAL)) { Perl_warner(aTHX_ WARN_INTERNAL, "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); /* free special SVs */ SvREFCNT(&PL_sv_yes) = 0; sv_clear(&PL_sv_yes); SvANY(&PL_sv_yes) = NULL; SvFLAGS(&PL_sv_yes) = 0; SvREFCNT(&PL_sv_no) = 0; sv_clear(&PL_sv_no); SvANY(&PL_sv_no) = NULL; SvFLAGS(&PL_sv_no) = 0; SvREFCNT(&PL_sv_undef) = 0; SvREADONLY_off(&PL_sv_undef); if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL)) Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count); Safefree(PL_origfilename); Safefree(PL_reg_start_tmp); if (PL_reg_curpm) Safefree(PL_reg_curpm); Safefree(PL_reg_poscache); Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh)); Safefree(PL_op_mask); Safefree(PL_psig_ptr); Safefree(PL_psig_name); 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); MUTEX_DESTROY(&PL_fdpid_mutex); COND_DESTROY(&PL_eval_cond); #ifdef EMULATE_ATOMIC_REFCOUNTS MUTEX_DESTROY(&PL_svref_mutex); #endif /* EMULATE_ATOMIC_REFCOUNTS */ /* 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 */ sv_free_arenas(); /* 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 */ (void)SvOOK_off(PL_mess_sv); Safefree(SvPVX(PL_mess_sv)); Safefree(SvANY(PL_mess_sv)); Safefree(PL_mess_sv); PL_mess_sv = Nullsv; } } /* =for apidoc perl_free Releases a Perl interpreter. See L. =cut */ void perl_free(pTHXx) { #if defined(PERL_OBJECT) PerlMem_free(this); #else # if defined(PERL_IMPLICIT_SYS) && defined(WIN32) void *host = w32_internal_host; PerlMem_free(aTHXx); win32_delete_internal_host(host); # else PerlMem_free(aTHXx); # endif #endif } void Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr) { Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); PL_exitlist[PL_exitlistlen].fn = fn; PL_exitlist[PL_exitlistlen].ptr = ptr; ++PL_exitlistlen; } /* =for apidoc perl_parse Tells a Perl interpreter to parse a Perl script. See L. =cut */ int perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env) { dTHR; I32 oldscope; int ret; dJMPENV; #ifdef USE_THREADS dTHX; #endif #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW #ifdef IAMSUID #undef IAMSUID Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\ setuid perl scripts securely.\n"); #endif #endif #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__)) _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; #ifdef PERL_FLEXIBLE_EXCEPTIONS CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit); #else JMPENV_PUSH(ret); #endif switch (ret) { case 0: #ifndef PERL_FLEXIBLE_EXCEPTIONS parse_body(env,xsinit); #endif if (PL_checkav) call_list(oldscope, PL_checkav); ret = 0; 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_checkav) call_list(oldscope, PL_checkav); ret = STATUS_NATIVE_EXPORT; break; case 3: PerlIO_printf(Perl_error_log, "panic: top_env\n"); ret = 1; break; } JMPENV_POP; return ret; } #ifdef PERL_FLEXIBLE_EXCEPTIONS STATIC void * S_vparse_body(pTHX_ va_list args) { char **env = va_arg(args, char**); XSINIT_t xsinit = va_arg(args, XSINIT_t); return parse_body(env, xsinit); } #endif STATIC void * S_parse_body(pTHX_ char **env, XSINIT_t xsinit) { dTHR; int argc = PL_origargc; char **argv = PL_origargv; char *scriptname = NULL; int fdscript = -1; VOL bool dosearch = FALSE; char *validarg = ""; AV* comppadlist; register SV *sv; register char *s; char *cddir = Nullch; sv_setpvn(PL_linestr,"",0); sv = newSVpvn("",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; #ifdef DOSUID if (*validarg) validarg = " PHOOEY "; else validarg = argv[0]; #endif s = argv[0]+1; reswitch: switch (*s) { case 'C': #ifdef WIN32 win32_argv2utf8(argc-1, argv+1); /* FALL THROUGH */ #endif #ifndef PERL_STRICT_CR case '\r': #endif 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 MACOS_TRADITIONAL /* ignore -e for Dev:Pseudo argument */ if (argv[1] && !strcmp(argv[1], "Dev:Pseudo")) break; #endif if (PL_euid != PL_uid || PL_egid != PL_gid) Perl_croak(aTHX_ "No -e allowed in setuid scripts"); if (!PL_e_script) { PL_e_script = newSVpvn("",0); filter_add(read_e_script, NULL); } if (*++s) sv_catpv(PL_e_script, s); else if (argv[1]) { sv_catpv(PL_e_script, argv[1]); argc--,argv++; } else Perl_croak(aTHX_ "No code specified for -e"); sv_catpv(PL_e_script, "\n"); break; case 'I': /* -I handled both here and in moreswitches() */ forbid_setid("-I"); if (!*++s && (s=argv[1]) != Nullch) { argc--,argv++; } if (s && *s) { char *p; STRLEN len = strlen(s); p = savepvn(s, len); incpush(p, TRUE, TRUE); sv_catpvn(sv, "-I", 2); sv_catpvn(sv, p, len); sv_catpvn(sv, " ", 1); Safefree(p); } else Perl_croak(aTHX_ "No directory specified for -I"); break; case 'P': 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 sv_catpv(PL_Sv,"\" Compile-time options:"); # ifdef DEBUGGING sv_catpv(PL_Sv," DEBUGGING"); # endif # ifdef MULTIPLICITY sv_catpv(PL_Sv," MULTIPLICITY"); # endif # ifdef USE_THREADS sv_catpv(PL_Sv," USE_THREADS"); # endif # ifdef USE_ITHREADS sv_catpv(PL_Sv," USE_ITHREADS"); # endif # ifdef USE_64_BIT_INT sv_catpv(PL_Sv," USE_64_BIT_INT"); # endif # ifdef USE_64_BIT_ALL sv_catpv(PL_Sv," USE_64_BIT_ALL"); # endif # ifdef USE_LONG_DOUBLE sv_catpv(PL_Sv," USE_LONG_DOUBLE"); # endif # ifdef USE_LARGE_FILES sv_catpv(PL_Sv," USE_LARGE_FILES"); # endif # ifdef USE_SOCKS sv_catpv(PL_Sv," USE_SOCKS"); # endif # ifdef PERL_OBJECT sv_catpv(PL_Sv," PERL_OBJECT"); # endif # ifdef PERL_IMPLICIT_CONTEXT sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT"); # endif # ifdef PERL_IMPLICIT_SYS sv_catpv(PL_Sv," PERL_IMPLICIT_SYS"); # endif sv_catpv(PL_Sv,"\\n\","); #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]) Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]); } } #endif Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME); #ifdef __DATE__ # ifdef __TIME__ Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); # else Perl_sv_catpvf(aTHX_ 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': PL_doextract = TRUE; s++; if (*s) cddir = s; break; 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: Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s); } } switch_end: if ( #ifndef SECURE_INTERNAL_GETENV !PL_tainting && #endif (s = PerlEnv_getenv("PERL5OPT"))) { while (isSPACE(*s)) s++; if (*s == '-' && *(s+1) == 'T') PL_tainting = TRUE; else { while (s && *s) { while (isSPACE(*s)) s++; if (*s == '-') { s++; if (isSPACE(*s)) continue; } if (!*s) break; if (!strchr("DIMUdmw", *s)) Perl_croak(aTHX_ "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 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) moreswitches("h"); #endif scriptname = "-"; } init_perllib(); open_script(scriptname,dosearch,sv,&fdscript); validate_suid(validarg, scriptname,fdscript); #ifndef PERL_MICRO #if defined(SIGCHLD) || defined(SIGCLD) { #ifndef SIGCHLD # define SIGCHLD SIGCLD #endif Sighandler_t sigstate = rsignal_state(SIGCHLD); if (sigstate == SIG_IGN) { if (ckWARN(WARN_SIGNAL)) Perl_warner(aTHX_ WARN_SIGNAL, "Can't ignore signal CHLD, forcing to default"); (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL); } } #endif #endif #ifdef MACOS_TRADITIONAL if (PL_doextract || gMacPerl_AlwaysExtract) { #else if (PL_doextract) { #endif find_beginning(); if (cddir && PerlDir_chdir(cddir) < 0) Perl_croak(aTHX_ "Can't chdir to %s",cddir); } 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, newSVpvn("@_", 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(); #ifndef PERL_MICRO boot_core_xsutils(); #endif if (xsinit) (*xsinit)(aTHXo); /* in case linked C routines want magical variables */ #ifndef PERL_MICRO #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) init_os_extras(); #endif #endif #ifdef USE_SOCKS SOCKSinit(argv[0]); #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; #ifdef MACOS_TRADITIONAL if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) { if (PL_minus_c) Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename)); else { Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", MacPerl_MPWFileName(PL_origfilename)); } } #else if (yyparse() || PL_error_count) { if (PL_minus_c) Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename); else { Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", PL_origfilename); } } #endif CopLINE_set(PL_curcop, 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(get_sv("/", TRUE), PL_rs); if (PL_do_undump) my_unexec(); if (isWARN_ONCE) { SAVECOPFILE(PL_curcop); SAVECOPLINE(PL_curcop); 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; return NULL; } /* =for apidoc perl_run Tells a Perl interpreter to run. See L. =cut */ int perl_run(pTHXx) { dTHR; I32 oldscope; int ret = 0; dJMPENV; #ifdef USE_THREADS dTHX; #endif oldscope = PL_scopestack_ix; #ifdef PERL_FLEXIBLE_EXCEPTIONS redo_body: CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope); #else JMPENV_PUSH(ret); #endif switch (ret) { case 1: cxstack_ix = -1; /* start context stack again */ goto redo_body; case 0: /* normal completion */ #ifndef PERL_FLEXIBLE_EXCEPTIONS redo_body: run_body(oldscope); #endif /* FALL THROUGH */ case 2: /* my_exit() */ while (PL_scopestack_ix > oldscope) LEAVE; FREETMPS; PL_curstash = PL_defstash; if (PL_endav && !PL_minus_c) call_list(oldscope, PL_endav); #ifdef MYMALLOC if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) dump_mstats("after execution: "); #endif ret = STATUS_NATIVE_EXPORT; break; case 3: if (PL_restartop) { POPSTACK_TO(PL_mainstack); goto redo_body; } PerlIO_printf(Perl_error_log, "panic: restartop\n"); FREETMPS; ret = 1; break; } JMPENV_POP; return ret; } #ifdef PERL_FLEXIBLE_EXCEPTIONS STATIC void * S_vrun_body(pTHX_ va_list args) { I32 oldscope = va_arg(args, I32); return run_body(oldscope); } #endif STATIC void * S_run_body(pTHX_ I32 oldscope) { dTHR; 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%"UVxf"\n", PTR2UV(thr))); if (PL_minus_c) { #ifdef MACOS_TRADITIONAL PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename)); #else PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename); #endif 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(aTHX); } else if (PL_main_start) { CvDEPTH(PL_main_cv) = 1; PL_op = PL_main_start; CALLRUNOPS(aTHX); } my_exit(0); /* NOTREACHED */ return NULL; } /* =for apidoc p||get_sv Returns the SV of the specified Perl scalar. If C is set and the Perl variable does not exist then it will be created. If C is not set and the variable does not exist then NULL is returned. =cut */ SV* Perl_get_sv(pTHX_ const 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; } /* =for apidoc p||get_av Returns the AV of the specified Perl array. If C is set and the Perl variable does not exist then it will be created. If C is not set and the variable does not exist then NULL is returned. =cut */ AV* Perl_get_av(pTHX_ const char *name, I32 create) { GV* gv = gv_fetchpv(name, create, SVt_PVAV); if (create) return GvAVn(gv); if (gv) return GvAV(gv); return Nullav; } /* =for apidoc p||get_hv Returns the HV of the specified Perl hash. If C is set and the Perl variable does not exist then it will be created. If C is not set and the variable does not exist then NULL is returned. =cut */ HV* Perl_get_hv(pTHX_ const char *name, I32 create) { GV* gv = gv_fetchpv(name, create, SVt_PVHV); if (create) return GvHVn(gv); if (gv) return GvHV(gv); return Nullhv; } /* =for apidoc p||get_cv Returns the CV of the specified Perl subroutine. If C is set and the Perl subroutine does not exist then it will be declared (which has the same effect as saying C). If C is not set and the subroutine does not exist then NULL is returned. =cut */ CV* Perl_get_cv(pTHX_ const char *name, I32 create) { GV* gv = gv_fetchpv(name, create, SVt_PVCV); /* XXX unsafe for threads if eval_owner isn't held */ /* XXX this is probably not what they think they're getting. * It has the same effect as "sub name;", i.e. just a forward * declaration! */ 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. */ /* =for apidoc p||call_argv Performs a callback to the specified Perl sub. See L. =cut */ I32 Perl_call_argv(pTHX_ const 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 call_pv(sub_name, flags); } /* =for apidoc p||call_pv Performs a callback to the specified Perl sub. See L. =cut */ I32 Perl_call_pv(pTHX_ const char *sub_name, I32 flags) /* name of the subroutine */ /* See G_* flags in cop.h */ { return call_sv((SV*)get_cv(sub_name, TRUE), flags); } /* =for apidoc p||call_method Performs a callback to the specified Perl method. The blessed object must be on the stack. See L. =cut */ I32 Perl_call_method(pTHX_ const char *methname, I32 flags) /* name of the subroutine */ /* See G_* flags in cop.h */ { return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD); } /* May be called with any of a CV, a GV, or an SV containing the name. */ /* =for apidoc p||call_sv Performs a callback to the Perl sub whose name is in the SV. See L. =cut */ I32 Perl_call_sv(pTHX_ SV *sv, I32 flags) /* See G_* flags in cop.h */ { dSP; LOGOP myop; /* fake syntax tree node */ UNOP method_op; I32 oldmark; I32 retval; I32 oldscope; bool oldcatch = CATCH_GET; int ret; OP* oldop = PL_op; dJMPENV; 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_METHOD) { Zero(&method_op, 1, UNOP); method_op.op_next = PL_op; method_op.op_ppaddr = PL_ppaddr[OP_METHOD]; myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB]; PL_op = (OP*)&method_op; } if (!(flags & G_EVAL)) { CATCH_SET(TRUE); call_body((OP*)&myop, FALSE); retval = PL_stack_sp - (PL_stack_base + oldmark); CATCH_SET(oldcatch); } else { myop.op_other = (OP*)&myop; PL_markstack_ptr--; /* we're trying to emulate pp_entertry() here */ { register PERL_CONTEXT *cx; I32 gimme = GIMME_V; ENTER; SAVETMPS; push_return(Nullop); PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); PUSHEVAL(cx, 0, 0); PL_eval_root = PL_op; /* Only needed so that goto works right. */ PL_in_eval = EVAL_INEVAL; if (flags & G_KEEPERR) PL_in_eval |= EVAL_KEEPERR; else sv_setpv(ERRSV,""); } PL_markstack_ptr++; #ifdef PERL_FLEXIBLE_EXCEPTIONS redo_body: CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), (OP*)&myop, FALSE); #else JMPENV_PUSH(ret); #endif switch (ret) { case 0: #ifndef PERL_FLEXIBLE_EXCEPTIONS redo_body: call_body((OP*)&myop, FALSE); #endif retval = PL_stack_sp - (PL_stack_base + oldmark); if (!(flags & G_KEEPERR)) sv_setpv(ERRSV,""); break; case 1: STATUS_ALL_FAILURE; /* FALL THROUGH */ case 2: /* my_exit() was called */ PL_curstash = PL_defstash; FREETMPS; JMPENV_POP; if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) Perl_croak(aTHX_ "Callback called exit"); my_exit_jump(); /* NOTREACHED */ case 3: if (PL_restartop) { PL_op = PL_restartop; PL_restartop = 0; goto redo_body; } PL_stack_sp = PL_stack_base + oldmark; if (flags & G_ARRAY) retval = 0; else { retval = 1; *++PL_stack_sp = &PL_sv_undef; } break; } 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; } if (flags & G_DISCARD) { PL_stack_sp = PL_stack_base + oldmark; retval = 0; FREETMPS; LEAVE; } PL_op = oldop; return retval; } #ifdef PERL_FLEXIBLE_EXCEPTIONS STATIC void * S_vcall_body(pTHX_ va_list args) { OP *myop = va_arg(args, OP*); int is_eval = va_arg(args, int); call_body(myop, is_eval); return NULL; } #endif STATIC void S_call_body(pTHX_ OP *myop, int is_eval) { dTHR; if (PL_op == myop) { if (is_eval) PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */ else PL_op = Perl_pp_entersub(aTHX); /* this does */ } if (PL_op) CALLRUNOPS(aTHX); } /* Eval a string. The G_EVAL flag is always assumed. */ /* =for apidoc p||eval_sv Tells Perl to C the string in the SV. =cut */ I32 Perl_eval_sv(pTHX_ 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; int ret; OP* oldop = PL_op; dJMPENV; if (flags & G_DISCARD) { ENTER; SAVETMPS; } 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; #ifdef PERL_FLEXIBLE_EXCEPTIONS redo_body: CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body), (OP*)&myop, TRUE); #else JMPENV_PUSH(ret); #endif switch (ret) { case 0: #ifndef PERL_FLEXIBLE_EXCEPTIONS redo_body: call_body((OP*)&myop,TRUE); #endif retval = PL_stack_sp - (PL_stack_base + oldmark); if (!(flags & G_KEEPERR)) sv_setpv(ERRSV,""); break; case 1: STATUS_ALL_FAILURE; /* FALL THROUGH */ case 2: /* my_exit() was called */ PL_curstash = PL_defstash; FREETMPS; JMPENV_POP; if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) Perl_croak(aTHX_ "Callback called exit"); my_exit_jump(); /* NOTREACHED */ case 3: if (PL_restartop) { PL_op = PL_restartop; PL_restartop = 0; goto redo_body; } PL_stack_sp = PL_stack_base + oldmark; if (flags & G_ARRAY) retval = 0; else { retval = 1; *++PL_stack_sp = &PL_sv_undef; } break; } JMPENV_POP; if (flags & G_DISCARD) { PL_stack_sp = PL_stack_base + oldmark; retval = 0; FREETMPS; LEAVE; } PL_op = oldop; return retval; } /* =for apidoc p||eval_pv Tells Perl to C the given string and return an SV* result. =cut */ SV* Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error) { dSP; SV* sv = newSVpv(p, 0); eval_sv(sv, G_SCALAR); SvREFCNT_dec(sv); SPAGAIN; sv = POPs; PUTBACK; if (croak_on_error && SvTRUE(ERRSV)) { STRLEN n_a; Perl_croak(aTHX_ SvPVx(ERRSV, n_a)); } return sv; } /* Require a module. */ /* =for apidoc p||require_pv Tells Perl to C a module. =cut */ void Perl_require_pv(pTHX_ const char *pv) { SV* sv; dSP; PUSHSTACKi(PERLSI_REQUIRE); PUTBACK; sv = sv_newmortal(); sv_setpv(sv, "require '"); sv_catpv(sv, pv); sv_catpv(sv, "'"); eval_sv(sv, G_DISCARD); SPAGAIN; POPSTACK; } void Perl_magicname(pTHX_ 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 S_usage(pTHX_ 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 enable native wide character system interfaces", "-c check syntax only (runs BEGIN and CHECK blocks)", "-d[:debugger] run program under debugger", "-D[number/list] set debugging flags (argument is a bit mask or alphabets)", "-e 'command' one line of program (several -e's allowed, omit programfile)", "-F/pattern/ split() pattern for -a switch (//'s are optional)", "-i[extension] edit <> files in place (makes backup if extension supplied)", "-Idirectory specify @INC/#include directory (several -I's allowed)", "-l[octal] enable line ending processing, specifies line terminator", "-[mM][-]module execute `use/no module...' before executing program", "-n assume 'while (<>) { ... }' loop around program", "-p assume loop like -n but print line also, like sed", "-P run program through C preprocessor before compilation", "-s enable rudimentary parsing for switches after programfile", "-S look for programfile using PATH environment variable", "-T enable tainting checks", "-u dump core after parsing program", "-U allow unsafe operations", "-v print version, subversion (includes VERY IMPORTANT perl info)", "-V[:variable] print configuration summary (or a single Config.pm variable)", "-w enable many useful warnings (RECOMMENDED)", "-W enable all warnings", "-X disable all warnings", "-x[directory] strip off text before #!perl line and perhaps cd to directory", "\n", NULL }; char **p = usage_msg; PerlIO_printf(PerlIO_stdout(), "\nUsage: %s [switches] [--] [programfile] [arguments]", name); while (*p) PerlIO_printf(PerlIO_stdout(), "\n %s", *p++); } /* This routine handles any switches that can be given during run */ char * Perl_moreswitches(pTHX_ char *s) { I32 numlen; U32 rschar; switch (*s) { case '0': { dTHR; numlen = 0; /* disallow underscores */ rschar = (U32)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 = newSVpvn("", 0); else { char ch = rschar; PL_nrs = newSVpvn(&ch, 1); } return s + numlen; } case 'C': PL_widesyscalls = TRUE; s++; return s; 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++; /* The following permits -d:Mod to accepts arguments following an = in the fashion that -MSome::Mod does. */ if (*s == ':' || *s == '=') { char *start; SV *sv; sv = newSVpv("use Devel::", 0); start = ++s; /* We now allow -d:Module=Foo,Bar */ while(isALNUM(*s) || *s==':') ++s; if (*s != '=') sv_catpv(sv, start); else { sv_catpvn(sv, start, s-start); sv_catpv(sv, " split(/,/,q{"); sv_catpv(sv, ++s); sv_catpv(sv, "})"); } s += strlen(s); my_setenv("PERL5DB", SvPV(sv, PL_na)); } 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 dTHR; if (ckWARN_d(WARN_DEBUGGING)) Perl_warner(aTHX_ WARN_DEBUGGING, "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; p = s; /* ignore trailing spaces (possibly followed by other switches) */ do { for (e = p; *e && !isSPACE(*e); e++) ; p = e; while (isSPACE(*p)) p++; } while (*p && *p != '-'); e = savepvn(s, e-s); incpush(e, TRUE, TRUE); Safefree(e); s = p; if (*s == '-') s++; } else Perl_croak(aTHX_ "No directory specified for -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; numlen = 0; /* disallow underscores */ *PL_ors = (char)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') Perl_croak(aTHX_ "Can't use '%c' after -mname", *s); sv_catpv( sv, " ()"); } } else { if (s == start) Perl_croak(aTHX_ "Module name required with -%c option", s[-1]); sv_catpvn(sv, start, s-start); sv_catpv(sv, " split(/,/,q{"); sv_catpv(sv, ++s); sv_catpv(sv, "})"); } s += strlen(s); if (!PL_preambleav) PL_preambleav = newAV(); av_push(PL_preambleav, sv); } else Perl_croak(aTHX_ "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) Perl_croak(aTHX_ "Too late for \"-T\" option"); s++; return s; case 'u': #ifdef MACOS_TRADITIONAL Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh"); #endif PL_do_undump = TRUE; s++; return s; case 'U': PL_unsafe = TRUE; s++; return s; case 'v': PerlIO_printf(PerlIO_stdout(), Perl_form(aTHX_ "\nThis is perl, v%vd built for %s", PL_patchlevel, ARCHNAME)); #if defined(LOCAL_PATCH_COUNT) if (LOCAL_PATCH_COUNT > 0) PerlIO_printf(PerlIO_stdout(), "\n(with %d registered patch%s, " "see perl -V for more detail)", (int)LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : ""); #endif PerlIO_printf(PerlIO_stdout(), "\n\nCopyright 1987-2000, Larry Wall\n"); #ifdef MACOS_TRADITIONAL PerlIO_printf(PerlIO_stdout(), "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n"); #endif #ifdef MSDOS PerlIO_printf(PerlIO_stdout(), "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); #endif #ifdef DJGPP PerlIO_printf(PerlIO_stdout(), "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n" "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n"); #endif #ifdef OS2 PerlIO_printf(PerlIO_stdout(), "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n"); #endif #ifdef atarist PerlIO_printf(PerlIO_stdout(), "atariST series port, ++jrb bammi@cadence.com\n"); #endif #ifdef __BEOS__ PerlIO_printf(PerlIO_stdout(), "BeOS port Copyright Tom Spindler, 1997-1999\n"); #endif #ifdef MPE PerlIO_printf(PerlIO_stdout(), "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n"); #endif #ifdef OEMVS PerlIO_printf(PerlIO_stdout(), "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n"); #endif #ifdef __VOS__ PerlIO_printf(PerlIO_stdout(), "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n"); #endif #ifdef __OPEN_VM PerlIO_printf(PerlIO_stdout(), "VM/ESA port by Neale Ferguson, 1998-1999\n"); #endif #ifdef POSIX_BC PerlIO_printf(PerlIO_stdout(), "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n"); #endif #ifdef __MINT__ PerlIO_printf(PerlIO_stdout(), "MiNT port by Guido Flohr, 1997-1999\n"); #endif #ifdef EPOC PerlIO_printf(PerlIO_stdout(), "EPOC port by Olaf Flebbe, 1999-2000\n"); #endif #ifdef BINARY_BUILD_NOTICE BINARY_BUILD_NOTICE; #endif PerlIO_printf(PerlIO_stdout(), "\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 = pWARN_ALL ; s++; return s; case 'X': PL_dowarn = G_WARN_ALL_OFF; PL_compiling.cop_warnings = pWARN_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 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: Perl_croak(aTHX_ "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 Perl_my_unexec(pTHX) { #ifdef UNEXEC SV* prog; SV* file; int status = 1; extern int etext; 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 # ifdef VMS # include lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ # else ABORT(); /* for use with undump */ # endif #endif } /* initialize curinterp */ STATIC void S_init_interp(pTHX) { #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_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_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 # ifdef MULTIPLICITY # define PERLVAR(var,type) # define PERLVARA(var,n,type) # if defined(PERL_IMPLICIT_CONTEXT) # if defined(USE_THREADS) # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; # else /* !USE_THREADS */ # define PERLVARI(var,type,init) aTHX->var = init; # define PERLVARIC(var,type,init) aTHX->var = init; # endif /* USE_THREADS */ # else # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; # endif # include "intrpvar.h" # ifndef USE_THREADS # include "thrdvar.h" # endif # undef PERLVAR # undef PERLVARA # undef PERLVARI # undef PERLVARIC # else # define PERLVAR(var,type) # define PERLVARA(var,n,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 PERLVARA # undef PERLVARI # undef PERLVARIC # endif #endif } STATIC void S_init_main_stash(pTHX) { 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 HvSHAREKEYS_off(PL_strtab); /* mandatory */ hv_ksplit(PL_strtab, 512); PL_curstash = PL_defstash = newHV(); PL_curstname = newSVpvn("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)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */ sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ sv_setpvn(ERRSV, "", 0); PL_curstash = PL_defstash; CopSTASH_set(&PL_compiling, PL_defstash); PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); PL_nullstash = GvHV(gv_fetchpv("::", GV_ADDMULTI, SVt_PVHV)); /* We must init $/ before switches are processed. */ sv_setpvn(get_sv("/", TRUE), "\n", 1); } STATIC void S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript) { dTHR; *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; } } } #ifdef USE_ITHREADS Safefree(CopFILE(PL_curcop)); #else SvREFCNT_dec(CopFILEGV(PL_curcop)); #endif CopFILE_set(PL_curcop, 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 = newSVpvn("",0); SV *cmd = NEWSV(0,0); if (strEQ(cpp_cfg, "cppstdin")) Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP); sv_catpv(cpp, cpp_cfg); sv_catpvn(sv, "-I", 2); sv_catpv(sv,PRIVLIB_EXP); #if defined(MSDOS) || defined(WIN32) Perl_sv_setpvf(aTHX_ 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 | %"SVf" -C %"SVf" %s", (PL_doextract ? "-e \"1,/^#/d\n\"" : ""), #else # ifdef __OPEN_VM Perl_sv_setpvf(aTHX_ 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 | %"SVf" %"SVf" %s", # else Perl_sv_setpvf(aTHX_ 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 | %"SVf" -C %"SVf" %s", # endif #ifdef LOC_SED LOC_SED, #else "sed", #endif (PL_doextract ? "-e '1,/^#/d\n'" : ""), #endif scriptname, cpp, sv, CPPMINUS); PL_doextract = FALSE; #ifdef IAMSUID /* actually, this is caught earlier */ if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */ #ifdef HAS_SETEUID (void)seteuid(PL_uid); /* musn't stay setuid root */ #else #ifdef HAS_SETREUID (void)setreuid((Uid_t)-1, PL_uid); #else #ifdef HAS_SETRESUID (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1); #else PerlProc_setuid(PL_uid); #endif #endif #endif if (PerlProc_geteuid() != PL_uid) Perl_croak(aTHX_ "Can't do seteuid!\n"); } #endif /* IAMSUID */ PL_rsfp = PerlProc_popen(SvPVX(cmd), "r"); SvREFCNT_dec(cmd); SvREFCNT_dec(cpp); } 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 (PL_euid && PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { /* try again */ PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, (int)PERL_REVISION, (int)PERL_VERSION, (int)PERL_SUBVERSION), PL_origargv); Perl_croak(aTHX_ "Can't do setuid\n"); } #endif #endif Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", CopFILE(PL_curcop), Strerror(errno)); } } /* Mention * I_SYSSTATVFS HAS_FSTATVFS * I_SYSMOUNT * I_STATFS HAS_FSTATFS HAS_GETFSSTAT * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT * here so that metaconfig picks them up. */ #ifdef IAMSUID STATIC int S_fd_on_nosuid_fs(pTHX_ int fd) { int check_okay = 0; /* able to do all the required sys/libcalls */ int on_nosuid = 0; /* the fd is on a nosuid fs */ /* * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent(). * fstatvfs() is UNIX98. * fstatfs() is 4.3 BSD. * ustat()+getmnt() is pre-4.3 BSD. * getmntent() is O(number-of-mounted-filesystems) and can hang on * an irrelevant filesystem while trying to reach the right one. */ #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */ # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ defined(HAS_FSTATVFS) # define FD_ON_NOSUID_CHECK_OKAY struct statvfs stfs; check_okay = fstatvfs(fd, &stfs) == 0; on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID); # endif /* fstatvfs */ # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ defined(PERL_MOUNT_NOSUID) && \ defined(HAS_FSTATFS) && \ defined(HAS_STRUCT_STATFS) && \ defined(HAS_STRUCT_STATFS_F_FLAGS) # define FD_ON_NOSUID_CHECK_OKAY struct statfs stfs; check_okay = fstatfs(fd, &stfs) == 0; on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID); # endif /* fstatfs */ # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ defined(PERL_MOUNT_NOSUID) && \ defined(HAS_FSTAT) && \ defined(HAS_USTAT) && \ defined(HAS_GETMNT) && \ defined(HAS_STRUCT_FS_DATA) && \ defined(NOSTAT_ONE) # define FD_ON_NOSUID_CHECK_OKAY struct stat fdst; if (fstat(fd, &fdst) == 0) { struct ustat us; if (ustat(fdst.st_dev, &us) == 0) { struct fs_data fsd; /* NOSTAT_ONE here because we're not examining fields which * vary between that case and STAT_ONE. */ if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) { size_t cmplen = sizeof(us.f_fname); if (sizeof(fsd.fd_req.path) < cmplen) cmplen = sizeof(fsd.fd_req.path); if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) && fdst.st_dev == fsd.fd_req.dev) { check_okay = 1; on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID; } } } } } # endif /* fstat+ustat+getmnt */ # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ defined(HAS_GETMNTENT) && \ defined(HAS_HASMNTOPT) && \ defined(MNTOPT_NOSUID) # define FD_ON_NOSUID_CHECK_OKAY FILE *mtab = fopen("/etc/mtab", "r"); struct mntent *entry; struct stat stb, fsb; if (mtab && (fstat(fd, &stb) == 0)) { while (entry = getmntent(mtab)) { if (stat(entry->mnt_dir, &fsb) == 0 && fsb.st_dev == stb.st_dev) { /* found the filesystem */ check_okay = 1; if (hasmntopt(entry, MNTOPT_NOSUID)) on_nosuid = 1; break; } /* A single fs may well fail its stat(). */ } } if (mtab) fclose(mtab); # endif /* getmntent+hasmntopt */ if (!check_okay) Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename); return on_nosuid; } #endif /* IAMSUID */ STATIC void S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript) { #ifdef IAMSUID int which; #endif /* do we need to emulate setuid on scripts? */ /* This code is for those BSD systems that have setuid #! scripts disabled * in the kernel because of a security problem. Merely defining DOSUID * in perl will not fix that problem, but if you have disabled setuid * scripts in the kernel, this will attempt to emulate setuid and setgid * on scripts that have those now-otherwise-useless bits set. The setuid * root version must be called suidperl or sperlN.NNN. If regular perl * discovers that it has opened a setuid script, it calls suidperl with * the same argv that it had. If suidperl finds that the script it has * just opened is NOT setuid root, it sets the effective uid back to the * uid. We don't just make perl setuid root because that loses the * effective uid we had before invoking perl, if it was different from the * uid. * * 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. */ #ifdef DOSUID dTHR; char *s, *s2; if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ Perl_croak(aTHX_ "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 /* On this access check to make sure the directories are readable, * there is actually a small window that the user could use to make * filename point to an accessible directory. So there is a faint * chance that someone could execute a setuid script down in a * non-accessible directory. I don't know what to do about that. * But I don't think it's too important. The manual lies when * it says access() is useful in setuid programs. */ if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/ Perl_croak(aTHX_ "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 * inode to make sure we did stat() on the same file we opened. * Then we just have to make sure he or she can execute it. */ { struct stat tmpstatbuf; 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) Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */ if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */ #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK) if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) Perl_croak(aTHX_ "Permission denied"); #endif if (tmpstatbuf.st_dev != PL_statbuf.st_dev || tmpstatbuf.st_ino != PL_statbuf.st_ino) { (void)PerlIO_close(PL_rsfp); #ifdef MAIL_CAN_BE_USED_SAFELY /* No, it can't. As of Aug 05 200, there's bugtraq exploit. */ if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */ PerlIO_printf(PL_rsfp, "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n", PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino, CopFILE(PL_curcop), PL_statbuf.st_uid, PL_statbuf.st_gid); (void)PerlProc_pclose(PL_rsfp); } #endif Perl_croak(aTHX_ "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) Perl_croak(aTHX_ "Can't reswap uid and euid"); if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ Perl_croak(aTHX_ "Permission denied\n"); } #endif /* HAS_SETREUID */ #endif /* IAMSUID */ if (!S_ISREG(PL_statbuf.st_mode)) Perl_croak(aTHX_ "Permission denied"); if (PL_statbuf.st_mode & S_IWOTH) Perl_croak(aTHX_ "Setuid/gid script is writable by world"); PL_doswitches = FALSE; /* -s is insecure in suid */ CopLINE_inc(PL_curcop); if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch || strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */ Perl_croak(aTHX_ "No #! line"); s = SvPV(PL_linestr,n_a)+2; if (*s == ' ') s++; 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 */ Perl_croak(aTHX_ "Not a perl script"); while (*s == ' ' || *s == '\t') s++; /* * #! arg must be what we saw above. They can invoke it by * mentioning suidperl explicitly, but they may not add any strange * arguments beyond what #! says if they do invoke suidperl that way. */ len = strlen(validarg); if (strEQ(validarg," PHOOEY ") || strnNE(s,validarg,len) || !isSPACE(s[len])) Perl_croak(aTHX_ "Args must match #! line"); #ifndef IAMSUID if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && PL_euid == PL_statbuf.st_uid) if (!PL_do_undump) Perl_croak(aTHX_ "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 (PL_euid) { /* oops, we're not the setuid root perl */ (void)PerlIO_close(PL_rsfp); #ifndef IAMSUID /* try again */ PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, (int)PERL_REVISION, (int)PERL_VERSION, (int)PERL_SUBVERSION), PL_origargv); #endif Perl_croak(aTHX_ "Can't do setuid\n"); } if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { #ifdef HAS_SETEGID (void)setegid(PL_statbuf.st_gid); #else #ifdef HAS_SETREGID (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 PerlProc_setgid(PL_statbuf.st_gid); #endif #endif #endif if (PerlProc_getegid() != PL_statbuf.st_gid) Perl_croak(aTHX_ "Can't do setegid!\n"); } if (PL_statbuf.st_mode & S_ISUID) { if (PL_statbuf.st_uid != PL_euid) #ifdef HAS_SETEUID (void)seteuid(PL_statbuf.st_uid); /* all that for this */ #else #ifdef HAS_SETREUID (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); #else #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) Perl_croak(aTHX_ "Can't do seteuid!\n"); } else if (PL_uid) { /* oops, mustn't run as root */ #ifdef HAS_SETEUID (void)seteuid((Uid_t)PL_uid); #else #ifdef HAS_SETREUID (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); #else #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 if (PerlProc_geteuid() != PL_uid) Perl_croak(aTHX_ "Can't do seteuid!\n"); } init_ids(); if (!cando(S_IXUSR,TRUE,&PL_statbuf)) Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */ } #ifdef IAMSUID else if (PL_preprocess) Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n"); else if (fdscript >= 0) Perl_croak(aTHX_ "fd script not allowed in suidperl\n"); else Perl_croak(aTHX_ "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]) Perl_croak(aTHX_ "Permission denied"); PL_origargv[which] = savepv(Perl_form(aTHX_ "/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(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP, (int)PERL_REVISION, (int)PERL_VERSION, (int)PERL_SUBVERSION), PL_origargv);/* try again */ Perl_croak(aTHX_ "Can't do setuid\n"); #endif /* IAMSUID */ #else /* !DOSUID */ if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW 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) || (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) ) if (!PL_do_undump) Perl_croak(aTHX_ "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 */ } #endif /* DOSUID */ } STATIC void S_find_beginning(pTHX) { register char *s, *s2; /* skip forward in input to the real script? */ forbid_setid("-x"); #ifdef MACOS_TRADITIONAL /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */ while (PL_doextract || gMacPerl_AlwaysExtract) { if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { if (!gMacPerl_AlwaysExtract) Perl_croak(aTHX_ "No Perl script found in input\n"); if (PL_doextract) /* require explicit override ? */ if (!OverrideExtract(PL_origfilename)) Perl_croak(aTHX_ "User aborted script\n"); else PL_doextract = FALSE; /* Pater peccavi, file does not have #! */ PerlIO_rewind(PL_rsfp); break; } #else while (PL_doextract) { if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) Perl_croak(aTHX_ "No Perl script found in input\n"); #endif 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))) ; } } } } STATIC void S_init_ids(pTHX) { PL_uid = PerlProc_getuid(); PL_euid = PerlProc_geteuid(); PL_gid = PerlProc_getgid(); PL_egid = 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 S_forbid_setid(pTHX_ char *s) { if (PL_euid != PL_uid) Perl_croak(aTHX_ "No %s allowed while running setuid", s); if (PL_egid != PL_gid) Perl_croak(aTHX_ "No %s allowed while running setgid", s); } void Perl_init_debugger(pTHX) { dTHR; HV *ostash = PL_curstash; 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)); sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */ 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 = ostash; } #ifndef STRESS_REALLOC #define REASONABLE(size) (size) #else #define REASONABLE(size) (1) /* unreasonable */ #endif void Perl_init_stacks(pTHX) { /* 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_MARK_OFFSET; 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 S_nuke_stacks(pTHX) { 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); } #ifndef PERL_OBJECT static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ #endif STATIC void S_init_lexer(pTHX) { #ifdef PERL_OBJECT PerlIO *tmpfp; #endif tmpfp = PL_rsfp; PL_rsfp = Nullfp; lex_start(PL_linestr); PL_rsfp = tmpfp; PL_subname = newSVpvn("main",4); } STATIC void S_init_predump_symbols(pTHX) { dTHR; GV *tmpgv; IO *io; sv_setpvn(get_sv("\"", TRUE), " ", 1); PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); GvMULTI_on(PL_stdingv); io = GvIOp(PL_stdingv); IoIFP(io) = PerlIO_stdin(); tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); GvMULTI_on(tmpgv); GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); GvMULTI_on(tmpgv); io = GvIOp(tmpgv); IoOFP(io) = IoIFP(io) = PerlIO_stdout(); setdefout(tmpgv); tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); GvMULTI_on(tmpgv); GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); GvMULTI_on(PL_stderrgv); io = GvIOp(PL_stderrgv); IoOFP(io) = IoIFP(io) = PerlIO_stderr(); tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); GvMULTI_on(tmpgv); GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io); PL_statname = NEWSV(66,0); /* last filename we did stat on */ if (PL_osname) Safefree(PL_osname); PL_osname = savepv(OSNAME); } STATIC void S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env) { dTHR; char *s; SV *sv; GV* tmpgv; argc--,argv++; /* skip name of script */ if (PL_doswitches) { for (; argc > 0 && **argv == '-'; argc--,argv++) { if (!argv[0][1]) break; if (argv[0][1] == '-' && !argv[0][2]) { argc--,argv++; break; } if ((s = strchr(argv[0], '='))) { *s++ = '\0'; sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); } else sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); } } 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))) { #ifdef MACOS_TRADITIONAL /* $0 is not majick on a Mac */ sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename)); #else sv_setpv(GvSV(tmpgv),PL_origfilename); magicname("0", "0", 1); #endif } if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) #ifdef OS2 sv_setpv(GvSV(tmpgv), os2_execname(aTHX)); #else sv_setpv(GvSV(tmpgv),PL_origargv[0]); #endif if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) { GvMULTI_on(PL_argvgv); (void)gv_AVadd(PL_argvgv); av_clear(GvAVn(PL_argvgv)); for (; argc > 0; argc--,argv++) { SV *sv = newSVpv(argv[0],0); av_push(GvAVn(PL_argvgv),sv); if (PL_widesyscalls) (void)sv_utf8_decode(sv); } } if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) { HV *hv; GvMULTI_on(PL_envgv); hv = GvHVn(PL_envgv); hv_magic(hv, PL_envgv, 'E'); #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */ /* Note that if the supplied env parameter is actually a copy of the global environ then it may now point to free'd memory if the environment has been modified since. To avoid this problem we treat env==NULL as meaning 'use the default' */ if (!env) env = environ; if (env != environ) environ[0] = Nullch; for (; *env; env++) { if (!(s = strchr(*env,'='))) continue; *s++ = '\0'; #if defined(MSDOS) (void)strupr(*env); #endif sv = newSVpv(s--,0); (void)hv_store(hv, *env, s - *env, sv, 0); *s = '='; #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV) /* Sins of the RTL. See note in my_setenv(). */ (void)PerlEnv_putenv(savepv(*env)); #endif } #endif #ifdef DYNAMIC_ENV_FETCH HvNAME(hv) = savepv(ENV_HV_NAME); #endif } TAINT_NOT; if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid()); } STATIC void S_init_perllib(pTHX) { char *s; if (!PL_tainting) { #ifndef VMS s = PerlEnv_getenv("PERL5LIB"); if (s) incpush(s, TRUE, TRUE); else incpush(PerlEnv_getenv("PERLLIB"), FALSE, 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,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); else while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE); #endif /* VMS */ } /* Use the ~-expanded versions of APPLLIB (undocumented), ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB */ #ifdef APPLLIB_EXP incpush(APPLLIB_EXP, TRUE, TRUE); #endif #ifdef ARCHLIB_EXP incpush(ARCHLIB_EXP, FALSE, FALSE); #endif #ifdef MACOS_TRADITIONAL { struct stat tmpstatbuf; SV * privdir = NEWSV(55, 0); char * macperl = PerlEnv_getenv("MACPERL"); if (!macperl) macperl = ""; Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl); if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) incpush(SvPVX(privdir), TRUE, FALSE); Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl); if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) incpush(SvPVX(privdir), TRUE, FALSE); SvREFCNT_dec(privdir); } if (!PL_tainting) incpush(":", FALSE, FALSE); #else #ifndef PRIVLIB_EXP # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" #endif #if defined(WIN32) incpush(PRIVLIB_EXP, TRUE, FALSE); #else incpush(PRIVLIB_EXP, FALSE, FALSE); #endif #ifdef SITEARCH_EXP /* sitearch is always relative to sitelib on Windows for * DLL-based path intuition to work correctly */ # if !defined(WIN32) incpush(SITEARCH_EXP, FALSE, FALSE); # endif #endif #ifdef SITELIB_EXP # if defined(WIN32) incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */ # else incpush(SITELIB_EXP, FALSE, FALSE); # endif #endif #ifdef SITELIB_STEM /* Search for version-specific dirs below here */ incpush(SITELIB_STEM, FALSE, TRUE); #endif #ifdef PERL_VENDORARCH_EXP /* vendorarch is always relative to vendorlib on Windows for * DLL-based path intuition to work correctly */ # if !defined(WIN32) incpush(PERL_VENDORARCH_EXP, FALSE, FALSE); # endif #endif #ifdef PERL_VENDORLIB_EXP # if defined(WIN32) incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */ # else incpush(PERL_VENDORLIB_EXP, FALSE, FALSE); # endif #endif #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */ incpush(PERL_VENDORLIB_STEM, FALSE, TRUE); #endif #ifdef PERL_OTHERLIBDIRS incpush(PERL_OTHERLIBDIRS, TRUE, TRUE); #endif if (!PL_tainting) incpush(".", FALSE, FALSE); #endif /* MACOS_TRADITIONAL */ } #if defined(DOSISH) # define PERLLIB_SEP ';' #else # if defined(VMS) # define PERLLIB_SEP '|' # else # if defined(MACOS_TRADITIONAL) # define PERLLIB_SEP ',' # else # define PERLLIB_SEP ':' # endif # endif #endif #ifndef PERLLIB_MANGLE # define PERLLIB_MANGLE(s,n) (s) #endif STATIC void S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers) { SV *subdir = Nullsv; if (!p || !*p) return; if (addsubdirs || addoldvers) { subdir = sv_newmortal(); } /* 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), newSVpvn(".", 1)); */ p++; } if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), (STRLEN)(s - p)); p = s + 1; } else { sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); p = Nullch; /* break out */ } #ifdef MACOS_TRADITIONAL if (!strchr(SvPVX(libdir), ':')) sv_insert(libdir, 0, 0, ":", 1); if (SvPVX(libdir)[SvCUR(libdir)-1] != ':') sv_catpv(libdir, ":"); #endif /* * BEFORE pushing libdir onto @INC we may first push version- and * archname-specific sub-directories. */ if (addsubdirs || addoldvers) { #ifdef PERL_INC_VERSION_LIST /* Configure terminates PERL_INC_VERSION_LIST with a NULL */ const char *incverlist[] = { PERL_INC_VERSION_LIST }; const char **incver; #endif 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); } else PerlIO_printf(Perl_error_log, "Failed to unixify @INC element \"%s\"\n", SvPV(libdir,len)); #endif if (addsubdirs) { #ifdef MACOS_TRADITIONAL #define PERL_AV_SUFFIX_FMT "" #define PERL_ARCH_FMT ":%s" #else #define PERL_AV_SUFFIX_FMT "/" #define PERL_ARCH_FMT "/%s" #endif /* .../version/archname if -d .../version/archname */ Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT, libdir, (int)PERL_REVISION, (int)PERL_VERSION, (int)PERL_SUBVERSION, ARCHNAME); if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) av_push(GvAVn(PL_incgv), newSVsv(subdir)); /* .../version if -d .../version */ Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir, (int)PERL_REVISION, (int)PERL_VERSION, (int)PERL_SUBVERSION); if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) av_push(GvAVn(PL_incgv), newSVsv(subdir)); /* .../archname if -d .../archname */ Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME); if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) av_push(GvAVn(PL_incgv), newSVsv(subdir)); } #ifdef PERL_INC_VERSION_LIST if (addoldvers) { for (incver = incverlist; *incver; incver++) { /* .../xxx if -d .../xxx */ Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver); if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) av_push(GvAVn(PL_incgv), newSVsv(subdir)); } } #endif } /* finally push this lib directory on the end of @INC */ av_push(GvAVn(PL_incgv), libdir); } } #ifdef USE_THREADS STATIC struct perl_thread * S_init_main_thread(pTHX) { #if !defined(PERL_IMPLICIT_CONTEXT) struct perl_thread *thr; #endif XPV *xpv; Newz(53, thr, 1, struct perl_thread); PL_curcop = &PL_compiling; thr->interp = PERL_GET_INTERP; thr->cvcache = newHV(); thr->threadsv = newAV(); /* thr->threadsvp is set when find_threadsv is called */ thr->specific = newAV(); 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 Perl_init_thread_intern(thr); #endif #ifdef SET_THREAD_SELF SET_THREAD_SELF(thr); #else thr->self = pthread_self(); #endif /* SET_THREAD_SELF */ PERL_SET_THX(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 = newSVpvn("", 0); (void) find_threadsv("@"); /* Ensure $@ is initialised early */ PL_maxscream = -1; PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp); PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags); PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start); PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string); PL_regfree = MEMBER_TO_FPTR(Perl_pregfree); PL_regindent = 0; PL_reginterp_cnt = 0; return thr; } #endif /* USE_THREADS */ void Perl_call_list(pTHX_ I32 oldscope, AV *paramList) { dTHR; SV *atsv; line_t oldline = CopLINE(PL_curcop); CV *cv; STRLEN len; int ret; dJMPENV; while (AvFILL(paramList) >= 0) { cv = (CV*)av_shift(paramList); SAVEFREESV(cv); #ifdef PERL_FLEXIBLE_EXCEPTIONS CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv); #else JMPENV_PUSH(ret); #endif switch (ret) { case 0: #ifndef PERL_FLEXIBLE_EXCEPTIONS call_list_body(cv); #endif atsv = ERRSV; (void)SvPV(atsv, len); if (len) { STRLEN n_a; PL_curcop = &PL_compiling; CopLINE_set(PL_curcop, oldline); if (paramList == PL_beginav) sv_catpv(atsv, "BEGIN failed--compilation aborted"); else Perl_sv_catpvf(aTHX_ atsv, "%s failed--call queue aborted", paramList == PL_checkav ? "CHECK" : paramList == PL_initav ? "INIT" : "END"); while (PL_scopestack_ix > oldscope) LEAVE; JMPENV_POP; Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a)); } 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; PL_curcop = &PL_compiling; CopLINE_set(PL_curcop, oldline); JMPENV_POP; if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) { if (paramList == PL_beginav) Perl_croak(aTHX_ "BEGIN failed--compilation aborted"); else Perl_croak(aTHX_ "%s failed--call queue aborted", paramList == PL_checkav ? "CHECK" : paramList == PL_initav ? "INIT" : "END"); } my_exit_jump(); /* NOTREACHED */ case 3: if (PL_restartop) { PL_curcop = &PL_compiling; CopLINE_set(PL_curcop, oldline); JMPENV_JUMP(3); } PerlIO_printf(Perl_error_log, "panic: restartop\n"); FREETMPS; break; } JMPENV_POP; } } #ifdef PERL_FLEXIBLE_EXCEPTIONS STATIC void * S_vcall_list_body(pTHX_ va_list args) { CV *cv = va_arg(args, CV*); return call_list_body(cv); } #endif STATIC void * S_call_list_body(pTHX_ CV *cv) { PUSHMARK(PL_stack_sp); call_sv((SV*)cv, G_EVAL|G_DISCARD); return NULL; } void Perl_my_exit(pTHX_ U32 status) { dTHR; 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 1: STATUS_ALL_FAILURE; break; default: STATUS_NATIVE_SET(status); break; } my_exit_jump(); } void Perl_my_failure_exit(pTHX) { #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(); } STATIC void S_my_exit_jump(pTHX) { dTHR; register PERL_CONTEXT *cx; I32 gimme; SV **newsp; if (PL_e_script) { SvREFCNT_dec(PL_e_script); PL_e_script = Nullsv; } 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 #include "XSUB.h" #endif static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen) { 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; }