| 1 | /* perl.c |
| 2 | * |
| 3 | * Copyright (c) 1987-1998 Larry Wall |
| 4 | * |
| 5 | * You may distribute under the terms of either the GNU General Public |
| 6 | * License or the Artistic License, as specified in the README file. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * "A ship then new they built for him/of mithril and of elven glass" --Bilbo |
| 12 | */ |
| 13 | |
| 14 | #include "EXTERN.h" |
| 15 | #include "perl.h" |
| 16 | #include "patchlevel.h" |
| 17 | |
| 18 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
| 19 | #ifdef I_UNISTD |
| 20 | #include <unistd.h> |
| 21 | #endif |
| 22 | |
| 23 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
| 24 | char *getenv _((char *)); /* Usually in <stdlib.h> */ |
| 25 | #endif |
| 26 | |
| 27 | #ifdef I_FCNTL |
| 28 | #include <fcntl.h> |
| 29 | #endif |
| 30 | #ifdef I_SYS_FILE |
| 31 | #include <sys/file.h> |
| 32 | #endif |
| 33 | |
| 34 | #ifdef IAMSUID |
| 35 | #ifndef DOSUID |
| 36 | #define DOSUID |
| 37 | #endif |
| 38 | #endif |
| 39 | |
| 40 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 41 | #ifdef DOSUID |
| 42 | #undef DOSUID |
| 43 | #endif |
| 44 | #endif |
| 45 | |
| 46 | #ifdef PERL_OBJECT |
| 47 | static I32 read_e_script _((CPerlObj* pPerl, int idx, SV *buf_sv, int maxlen)); |
| 48 | #else |
| 49 | static void find_beginning _((void)); |
| 50 | static void forbid_setid _((char *)); |
| 51 | static void incpush _((char *, int)); |
| 52 | static void init_interp _((void)); |
| 53 | static void init_ids _((void)); |
| 54 | static void init_debugger _((void)); |
| 55 | static void init_lexer _((void)); |
| 56 | static void init_main_stash _((void)); |
| 57 | #ifdef USE_THREADS |
| 58 | static struct perl_thread * init_main_thread _((void)); |
| 59 | #endif /* USE_THREADS */ |
| 60 | static void init_perllib _((void)); |
| 61 | static void init_postdump_symbols _((int, char **, char **)); |
| 62 | static void init_predump_symbols _((void)); |
| 63 | static void my_exit_jump _((void)) __attribute__((noreturn)); |
| 64 | static void nuke_stacks _((void)); |
| 65 | static void open_script _((char *, bool, SV *, int *fd)); |
| 66 | static void usage _((char *)); |
| 67 | static void validate_suid _((char *, char*, int)); |
| 68 | static I32 read_e_script _((int idx, SV *buf_sv, int maxlen)); |
| 69 | #endif |
| 70 | |
| 71 | #ifdef PERL_OBJECT |
| 72 | CPerlObj* perl_alloc(IPerlMem* ipM, IPerlEnv* ipE, IPerlStdIO* ipStd, |
| 73 | IPerlLIO* ipLIO, IPerlDir* ipD, IPerlSock* ipS, IPerlProc* ipP) |
| 74 | { |
| 75 | CPerlObj* pPerl = new(ipM) CPerlObj(ipM, ipE, ipStd, ipLIO, ipD, ipS, ipP); |
| 76 | if(pPerl != NULL) |
| 77 | pPerl->Init(); |
| 78 | |
| 79 | return pPerl; |
| 80 | } |
| 81 | #else |
| 82 | PerlInterpreter * |
| 83 | perl_alloc(void) |
| 84 | { |
| 85 | PerlInterpreter *sv_interp; |
| 86 | |
| 87 | PL_curinterp = 0; |
| 88 | New(53, sv_interp, 1, PerlInterpreter); |
| 89 | return sv_interp; |
| 90 | } |
| 91 | #endif /* PERL_OBJECT */ |
| 92 | |
| 93 | void |
| 94 | #ifdef PERL_OBJECT |
| 95 | perl_construct(void) |
| 96 | #else |
| 97 | perl_construct(register PerlInterpreter *sv_interp) |
| 98 | #endif |
| 99 | { |
| 100 | #ifdef USE_THREADS |
| 101 | int i; |
| 102 | #ifndef FAKE_THREADS |
| 103 | struct perl_thread *thr; |
| 104 | #endif /* FAKE_THREADS */ |
| 105 | #endif /* USE_THREADS */ |
| 106 | |
| 107 | #ifndef PERL_OBJECT |
| 108 | if (!(PL_curinterp = sv_interp)) |
| 109 | return; |
| 110 | #endif |
| 111 | |
| 112 | #ifdef MULTIPLICITY |
| 113 | ++PL_ninterps; |
| 114 | Zero(sv_interp, 1, PerlInterpreter); |
| 115 | #endif |
| 116 | |
| 117 | /* Init the real globals (and main thread)? */ |
| 118 | if (!PL_linestr) { |
| 119 | #ifdef USE_THREADS |
| 120 | |
| 121 | INIT_THREADS; |
| 122 | #ifdef ALLOC_THREAD_KEY |
| 123 | ALLOC_THREAD_KEY; |
| 124 | #else |
| 125 | if (pthread_key_create(&PL_thr_key, 0)) |
| 126 | croak("panic: pthread_key_create"); |
| 127 | #endif |
| 128 | MUTEX_INIT(&PL_sv_mutex); |
| 129 | /* |
| 130 | * Safe to use basic SV functions from now on (though |
| 131 | * not things like mortals or tainting yet). |
| 132 | */ |
| 133 | MUTEX_INIT(&PL_eval_mutex); |
| 134 | COND_INIT(&PL_eval_cond); |
| 135 | MUTEX_INIT(&PL_threads_mutex); |
| 136 | COND_INIT(&PL_nthreads_cond); |
| 137 | #ifdef EMULATE_ATOMIC_REFCOUNTS |
| 138 | MUTEX_INIT(&PL_svref_mutex); |
| 139 | #endif /* EMULATE_ATOMIC_REFCOUNTS */ |
| 140 | |
| 141 | MUTEX_INIT(&PL_cred_mutex); |
| 142 | |
| 143 | thr = init_main_thread(); |
| 144 | #endif /* USE_THREADS */ |
| 145 | |
| 146 | PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ |
| 147 | |
| 148 | PL_linestr = NEWSV(65,79); |
| 149 | sv_upgrade(PL_linestr,SVt_PVIV); |
| 150 | |
| 151 | if (!SvREADONLY(&PL_sv_undef)) { |
| 152 | /* set read-only and try to insure than we wont see REFCNT==0 |
| 153 | very often */ |
| 154 | |
| 155 | SvREADONLY_on(&PL_sv_undef); |
| 156 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; |
| 157 | |
| 158 | sv_setpv(&PL_sv_no,PL_No); |
| 159 | SvNV(&PL_sv_no); |
| 160 | SvREADONLY_on(&PL_sv_no); |
| 161 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
| 162 | |
| 163 | sv_setpv(&PL_sv_yes,PL_Yes); |
| 164 | SvNV(&PL_sv_yes); |
| 165 | SvREADONLY_on(&PL_sv_yes); |
| 166 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
| 167 | } |
| 168 | |
| 169 | #ifdef PERL_OBJECT |
| 170 | /* TODO: */ |
| 171 | /* PL_sighandlerp = sighandler; */ |
| 172 | #else |
| 173 | PL_sighandlerp = sighandler; |
| 174 | #endif |
| 175 | PL_pidstatus = newHV(); |
| 176 | |
| 177 | #ifdef MSDOS |
| 178 | /* |
| 179 | * There is no way we can refer to them from Perl so close them to save |
| 180 | * space. The other alternative would be to provide STDAUX and STDPRN |
| 181 | * filehandles. |
| 182 | */ |
| 183 | (void)fclose(stdaux); |
| 184 | (void)fclose(stdprn); |
| 185 | #endif |
| 186 | } |
| 187 | |
| 188 | PL_nrs = newSVpv("\n", 1); |
| 189 | PL_rs = SvREFCNT_inc(PL_nrs); |
| 190 | |
| 191 | init_stacks(ARGS); |
| 192 | #ifdef MULTIPLICITY |
| 193 | init_interp(); |
| 194 | PL_perl_destruct_level = 1; |
| 195 | #else |
| 196 | if (PL_perl_destruct_level > 0) |
| 197 | init_interp(); |
| 198 | #endif |
| 199 | |
| 200 | init_ids(); |
| 201 | PL_lex_state = LEX_NOTPARSING; |
| 202 | |
| 203 | PL_start_env.je_prev = NULL; |
| 204 | PL_start_env.je_ret = -1; |
| 205 | PL_start_env.je_mustcatch = TRUE; |
| 206 | PL_top_env = &PL_start_env; |
| 207 | STATUS_ALL_SUCCESS; |
| 208 | |
| 209 | SET_NUMERIC_STANDARD(); |
| 210 | #if defined(SUBVERSION) && SUBVERSION > 0 |
| 211 | sprintf(PL_patchlevel, "%7.5f", (double) 5 |
| 212 | + ((double) PATCHLEVEL / (double) 1000) |
| 213 | + ((double) SUBVERSION / (double) 100000)); |
| 214 | #else |
| 215 | sprintf(PL_patchlevel, "%5.3f", (double) 5 + |
| 216 | ((double) PATCHLEVEL / (double) 1000)); |
| 217 | #endif |
| 218 | |
| 219 | #if defined(LOCAL_PATCH_COUNT) |
| 220 | PL_localpatches = local_patches; /* For possible -v */ |
| 221 | #endif |
| 222 | |
| 223 | PerlIO_init(); /* Hook to IO system */ |
| 224 | |
| 225 | PL_fdpid = newAV(); /* for remembering popen pids by fd */ |
| 226 | PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ |
| 227 | |
| 228 | DEBUG( { |
| 229 | New(51,PL_debname,128,char); |
| 230 | New(52,PL_debdelim,128,char); |
| 231 | } ) |
| 232 | |
| 233 | ENTER; |
| 234 | } |
| 235 | |
| 236 | void |
| 237 | #ifdef PERL_OBJECT |
| 238 | perl_destruct(void) |
| 239 | #else |
| 240 | perl_destruct(register PerlInterpreter *sv_interp) |
| 241 | #endif |
| 242 | { |
| 243 | dTHR; |
| 244 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
| 245 | I32 last_sv_count; |
| 246 | HV *hv; |
| 247 | #ifdef USE_THREADS |
| 248 | Thread t; |
| 249 | #endif /* USE_THREADS */ |
| 250 | |
| 251 | #ifndef PERL_OBJECT |
| 252 | if (!(PL_curinterp = sv_interp)) |
| 253 | return; |
| 254 | #endif |
| 255 | |
| 256 | #ifdef USE_THREADS |
| 257 | #ifndef FAKE_THREADS |
| 258 | /* Pass 1 on any remaining threads: detach joinables, join zombies */ |
| 259 | retry_cleanup: |
| 260 | MUTEX_LOCK(&PL_threads_mutex); |
| 261 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 262 | "perl_destruct: waiting for %d threads...\n", |
| 263 | PL_nthreads - 1)); |
| 264 | for (t = thr->next; t != thr; t = t->next) { |
| 265 | MUTEX_LOCK(&t->mutex); |
| 266 | switch (ThrSTATE(t)) { |
| 267 | AV *av; |
| 268 | case THRf_ZOMBIE: |
| 269 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 270 | "perl_destruct: joining zombie %p\n", t)); |
| 271 | ThrSETSTATE(t, THRf_DEAD); |
| 272 | MUTEX_UNLOCK(&t->mutex); |
| 273 | PL_nthreads--; |
| 274 | /* |
| 275 | * The SvREFCNT_dec below may take a long time (e.g. av |
| 276 | * may contain an object scalar whose destructor gets |
| 277 | * called) so we have to unlock threads_mutex and start |
| 278 | * all over again. |
| 279 | */ |
| 280 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 281 | JOIN(t, &av); |
| 282 | SvREFCNT_dec((SV*)av); |
| 283 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 284 | "perl_destruct: joined zombie %p OK\n", t)); |
| 285 | goto retry_cleanup; |
| 286 | case THRf_R_JOINABLE: |
| 287 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 288 | "perl_destruct: detaching thread %p\n", t)); |
| 289 | ThrSETSTATE(t, THRf_R_DETACHED); |
| 290 | /* |
| 291 | * We unlock threads_mutex and t->mutex in the opposite order |
| 292 | * from which we locked them just so that DETACH won't |
| 293 | * deadlock if it panics. It's only a breach of good style |
| 294 | * not a bug since they are unlocks not locks. |
| 295 | */ |
| 296 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 297 | DETACH(t); |
| 298 | MUTEX_UNLOCK(&t->mutex); |
| 299 | goto retry_cleanup; |
| 300 | default: |
| 301 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 302 | "perl_destruct: ignoring %p (state %u)\n", |
| 303 | t, ThrSTATE(t))); |
| 304 | MUTEX_UNLOCK(&t->mutex); |
| 305 | /* fall through and out */ |
| 306 | } |
| 307 | } |
| 308 | /* We leave the above "Pass 1" loop with threads_mutex still locked */ |
| 309 | |
| 310 | /* Pass 2 on remaining threads: wait for the thread count to drop to one */ |
| 311 | while (PL_nthreads > 1) |
| 312 | { |
| 313 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
| 314 | "perl_destruct: final wait for %d threads\n", |
| 315 | PL_nthreads - 1)); |
| 316 | COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex); |
| 317 | } |
| 318 | /* At this point, we're the last thread */ |
| 319 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 320 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n")); |
| 321 | MUTEX_DESTROY(&PL_threads_mutex); |
| 322 | COND_DESTROY(&PL_nthreads_cond); |
| 323 | #endif /* !defined(FAKE_THREADS) */ |
| 324 | #endif /* USE_THREADS */ |
| 325 | |
| 326 | destruct_level = PL_perl_destruct_level; |
| 327 | #ifdef DEBUGGING |
| 328 | { |
| 329 | char *s; |
| 330 | if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) { |
| 331 | int i = atoi(s); |
| 332 | if (destruct_level < i) |
| 333 | destruct_level = i; |
| 334 | } |
| 335 | } |
| 336 | #endif |
| 337 | |
| 338 | LEAVE; |
| 339 | FREETMPS; |
| 340 | |
| 341 | #ifdef MULTIPLICITY |
| 342 | --PL_ninterps; |
| 343 | #endif |
| 344 | |
| 345 | /* We must account for everything. */ |
| 346 | |
| 347 | /* Destroy the main CV and syntax tree */ |
| 348 | if (PL_main_root) { |
| 349 | PL_curpad = AvARRAY(PL_comppad); |
| 350 | op_free(PL_main_root); |
| 351 | PL_main_root = Nullop; |
| 352 | } |
| 353 | PL_curcop = &PL_compiling; |
| 354 | PL_main_start = Nullop; |
| 355 | SvREFCNT_dec(PL_main_cv); |
| 356 | PL_main_cv = Nullcv; |
| 357 | PL_dirty = TRUE; |
| 358 | |
| 359 | if (PL_sv_objcount) { |
| 360 | /* |
| 361 | * Try to destruct global references. We do this first so that the |
| 362 | * destructors and destructees still exist. Some sv's might remain. |
| 363 | * Non-referenced objects are on their own. |
| 364 | */ |
| 365 | sv_clean_objs(); |
| 366 | } |
| 367 | |
| 368 | /* unhook hooks which will soon be, or use, destroyed data */ |
| 369 | SvREFCNT_dec(PL_warnhook); |
| 370 | PL_warnhook = Nullsv; |
| 371 | SvREFCNT_dec(PL_diehook); |
| 372 | PL_diehook = Nullsv; |
| 373 | SvREFCNT_dec(PL_parsehook); |
| 374 | PL_parsehook = Nullsv; |
| 375 | |
| 376 | /* call exit list functions */ |
| 377 | while (PL_exitlistlen-- > 0) |
| 378 | PL_exitlist[PL_exitlistlen].fn(PERL_OBJECT_THIS_ PL_exitlist[PL_exitlistlen].ptr); |
| 379 | |
| 380 | Safefree(PL_exitlist); |
| 381 | |
| 382 | if (destruct_level == 0){ |
| 383 | |
| 384 | DEBUG_P(debprofdump()); |
| 385 | |
| 386 | /* The exit() function will do everything that needs doing. */ |
| 387 | return; |
| 388 | } |
| 389 | |
| 390 | /* loosen bonds of global variables */ |
| 391 | |
| 392 | if(PL_rsfp) { |
| 393 | (void)PerlIO_close(PL_rsfp); |
| 394 | PL_rsfp = Nullfp; |
| 395 | } |
| 396 | |
| 397 | /* Filters for program text */ |
| 398 | SvREFCNT_dec(PL_rsfp_filters); |
| 399 | PL_rsfp_filters = Nullav; |
| 400 | |
| 401 | /* switches */ |
| 402 | PL_preprocess = FALSE; |
| 403 | PL_minus_n = FALSE; |
| 404 | PL_minus_p = FALSE; |
| 405 | PL_minus_l = FALSE; |
| 406 | PL_minus_a = FALSE; |
| 407 | PL_minus_F = FALSE; |
| 408 | PL_doswitches = FALSE; |
| 409 | PL_dowarn = G_WARN_OFF; |
| 410 | PL_doextract = FALSE; |
| 411 | PL_sawampersand = FALSE; /* must save all match strings */ |
| 412 | PL_sawstudy = FALSE; /* do fbm_instr on all strings */ |
| 413 | PL_sawvec = FALSE; |
| 414 | PL_unsafe = FALSE; |
| 415 | |
| 416 | Safefree(PL_inplace); |
| 417 | PL_inplace = Nullch; |
| 418 | |
| 419 | if (PL_e_script) { |
| 420 | SvREFCNT_dec(PL_e_script); |
| 421 | PL_e_script = Nullsv; |
| 422 | } |
| 423 | |
| 424 | /* magical thingies */ |
| 425 | |
| 426 | Safefree(PL_ofs); /* $, */ |
| 427 | PL_ofs = Nullch; |
| 428 | |
| 429 | Safefree(PL_ors); /* $\ */ |
| 430 | PL_ors = Nullch; |
| 431 | |
| 432 | SvREFCNT_dec(PL_rs); /* $/ */ |
| 433 | PL_rs = Nullsv; |
| 434 | |
| 435 | SvREFCNT_dec(PL_nrs); /* $/ helper */ |
| 436 | PL_nrs = Nullsv; |
| 437 | |
| 438 | PL_multiline = 0; /* $* */ |
| 439 | |
| 440 | SvREFCNT_dec(PL_statname); |
| 441 | PL_statname = Nullsv; |
| 442 | PL_statgv = Nullgv; |
| 443 | |
| 444 | /* defgv, aka *_ should be taken care of elsewhere */ |
| 445 | |
| 446 | /* clean up after study() */ |
| 447 | SvREFCNT_dec(PL_lastscream); |
| 448 | PL_lastscream = Nullsv; |
| 449 | Safefree(PL_screamfirst); |
| 450 | PL_screamfirst = 0; |
| 451 | Safefree(PL_screamnext); |
| 452 | PL_screamnext = 0; |
| 453 | |
| 454 | /* startup and shutdown function lists */ |
| 455 | SvREFCNT_dec(PL_beginav); |
| 456 | SvREFCNT_dec(PL_endav); |
| 457 | SvREFCNT_dec(PL_initav); |
| 458 | PL_beginav = Nullav; |
| 459 | PL_endav = Nullav; |
| 460 | PL_initav = Nullav; |
| 461 | |
| 462 | /* shortcuts just get cleared */ |
| 463 | PL_envgv = Nullgv; |
| 464 | PL_siggv = Nullgv; |
| 465 | PL_incgv = Nullgv; |
| 466 | PL_hintgv = Nullgv; |
| 467 | PL_errgv = Nullgv; |
| 468 | PL_argvgv = Nullgv; |
| 469 | PL_argvoutgv = Nullgv; |
| 470 | PL_stdingv = Nullgv; |
| 471 | PL_last_in_gv = Nullgv; |
| 472 | PL_replgv = Nullgv; |
| 473 | |
| 474 | /* reset so print() ends up where we expect */ |
| 475 | setdefout(Nullgv); |
| 476 | |
| 477 | /* Prepare to destruct main symbol table. */ |
| 478 | |
| 479 | hv = PL_defstash; |
| 480 | PL_defstash = 0; |
| 481 | SvREFCNT_dec(hv); |
| 482 | |
| 483 | FREETMPS; |
| 484 | if (destruct_level >= 2) { |
| 485 | if (PL_scopestack_ix != 0) |
| 486 | warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
| 487 | (long)PL_scopestack_ix); |
| 488 | if (PL_savestack_ix != 0) |
| 489 | warn("Unbalanced saves: %ld more saves than restores\n", |
| 490 | (long)PL_savestack_ix); |
| 491 | if (PL_tmps_floor != -1) |
| 492 | warn("Unbalanced tmps: %ld more allocs than frees\n", |
| 493 | (long)PL_tmps_floor + 1); |
| 494 | if (cxstack_ix != -1) |
| 495 | warn("Unbalanced context: %ld more PUSHes than POPs\n", |
| 496 | (long)cxstack_ix + 1); |
| 497 | } |
| 498 | |
| 499 | /* Now absolutely destruct everything, somehow or other, loops or no. */ |
| 500 | last_sv_count = 0; |
| 501 | SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */ |
| 502 | while (PL_sv_count != 0 && PL_sv_count != last_sv_count) { |
| 503 | last_sv_count = PL_sv_count; |
| 504 | sv_clean_all(); |
| 505 | } |
| 506 | SvFLAGS(PL_strtab) &= ~SVTYPEMASK; |
| 507 | SvFLAGS(PL_strtab) |= SVt_PVHV; |
| 508 | |
| 509 | /* Destruct the global string table. */ |
| 510 | { |
| 511 | /* Yell and reset the HeVAL() slots that are still holding refcounts, |
| 512 | * so that sv_free() won't fail on them. |
| 513 | */ |
| 514 | I32 riter; |
| 515 | I32 max; |
| 516 | HE *hent; |
| 517 | HE **array; |
| 518 | |
| 519 | riter = 0; |
| 520 | max = HvMAX(PL_strtab); |
| 521 | array = HvARRAY(PL_strtab); |
| 522 | hent = array[0]; |
| 523 | for (;;) { |
| 524 | if (hent) { |
| 525 | warn("Unbalanced string table refcount: (%d) for \"%s\"", |
| 526 | HeVAL(hent) - Nullsv, HeKEY(hent)); |
| 527 | HeVAL(hent) = Nullsv; |
| 528 | hent = HeNEXT(hent); |
| 529 | } |
| 530 | if (!hent) { |
| 531 | if (++riter > max) |
| 532 | break; |
| 533 | hent = array[riter]; |
| 534 | } |
| 535 | } |
| 536 | } |
| 537 | SvREFCNT_dec(PL_strtab); |
| 538 | |
| 539 | if (PL_sv_count != 0) |
| 540 | warn("Scalars leaked: %ld\n", (long)PL_sv_count); |
| 541 | |
| 542 | sv_free_arenas(); |
| 543 | |
| 544 | /* No SVs have survived, need to clean out */ |
| 545 | PL_linestr = NULL; |
| 546 | PL_pidstatus = Nullhv; |
| 547 | Safefree(PL_origfilename); |
| 548 | Safefree(PL_archpat_auto); |
| 549 | Safefree(PL_reg_start_tmp); |
| 550 | if (PL_reg_curpm) |
| 551 | Safefree(PL_reg_curpm); |
| 552 | Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh)); |
| 553 | Safefree(PL_op_mask); |
| 554 | nuke_stacks(); |
| 555 | PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ |
| 556 | |
| 557 | DEBUG_P(debprofdump()); |
| 558 | #ifdef USE_THREADS |
| 559 | MUTEX_DESTROY(&PL_strtab_mutex); |
| 560 | MUTEX_DESTROY(&PL_sv_mutex); |
| 561 | MUTEX_DESTROY(&PL_eval_mutex); |
| 562 | MUTEX_DESTROY(&PL_cred_mutex); |
| 563 | COND_DESTROY(&PL_eval_cond); |
| 564 | |
| 565 | /* As the penultimate thing, free the non-arena SV for thrsv */ |
| 566 | Safefree(SvPVX(PL_thrsv)); |
| 567 | Safefree(SvANY(PL_thrsv)); |
| 568 | Safefree(PL_thrsv); |
| 569 | PL_thrsv = Nullsv; |
| 570 | #endif /* USE_THREADS */ |
| 571 | |
| 572 | /* As the absolutely last thing, free the non-arena SV for mess() */ |
| 573 | |
| 574 | if (PL_mess_sv) { |
| 575 | /* it could have accumulated taint magic */ |
| 576 | if (SvTYPE(PL_mess_sv) >= SVt_PVMG) { |
| 577 | MAGIC* mg; |
| 578 | MAGIC* moremagic; |
| 579 | for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { |
| 580 | moremagic = mg->mg_moremagic; |
| 581 | if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0) |
| 582 | Safefree(mg->mg_ptr); |
| 583 | Safefree(mg); |
| 584 | } |
| 585 | } |
| 586 | /* we know that type >= SVt_PV */ |
| 587 | SvOOK_off(PL_mess_sv); |
| 588 | Safefree(SvPVX(PL_mess_sv)); |
| 589 | Safefree(SvANY(PL_mess_sv)); |
| 590 | Safefree(PL_mess_sv); |
| 591 | PL_mess_sv = Nullsv; |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | void |
| 596 | #ifdef PERL_OBJECT |
| 597 | perl_free(void) |
| 598 | #else |
| 599 | perl_free(PerlInterpreter *sv_interp) |
| 600 | #endif |
| 601 | { |
| 602 | #ifdef PERL_OBJECT |
| 603 | Safefree(this); |
| 604 | #else |
| 605 | if (!(PL_curinterp = sv_interp)) |
| 606 | return; |
| 607 | Safefree(sv_interp); |
| 608 | #endif |
| 609 | } |
| 610 | |
| 611 | void |
| 612 | #ifdef PERL_OBJECT |
| 613 | perl_atexit(void (*fn) (CPerlObj*,void *), void *ptr) |
| 614 | #else |
| 615 | perl_atexit(void (*fn) (void *), void *ptr) |
| 616 | #endif |
| 617 | { |
| 618 | Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); |
| 619 | PL_exitlist[PL_exitlistlen].fn = fn; |
| 620 | PL_exitlist[PL_exitlistlen].ptr = ptr; |
| 621 | ++PL_exitlistlen; |
| 622 | } |
| 623 | |
| 624 | int |
| 625 | #ifdef PERL_OBJECT |
| 626 | perl_parse(void (*xsinit) (CPerlObj*), int argc, char **argv, char **env) |
| 627 | #else |
| 628 | perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env) |
| 629 | #endif |
| 630 | { |
| 631 | dTHR; |
| 632 | register SV *sv; |
| 633 | register char *s; |
| 634 | char *scriptname = NULL; |
| 635 | VOL bool dosearch = FALSE; |
| 636 | char *validarg = ""; |
| 637 | I32 oldscope; |
| 638 | AV* comppadlist; |
| 639 | dJMPENV; |
| 640 | int ret; |
| 641 | int fdscript = -1; |
| 642 | |
| 643 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 644 | #ifdef IAMSUID |
| 645 | #undef IAMSUID |
| 646 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
| 647 | setuid perl scripts securely.\n"); |
| 648 | #endif |
| 649 | #endif |
| 650 | |
| 651 | #ifndef PERL_OBJECT |
| 652 | if (!(PL_curinterp = sv_interp)) |
| 653 | return 255; |
| 654 | #endif |
| 655 | |
| 656 | #if defined(NeXT) && defined(__DYNAMIC__) |
| 657 | _dyld_lookup_and_bind |
| 658 | ("__environ", (unsigned long *) &environ_pointer, NULL); |
| 659 | #endif /* environ */ |
| 660 | |
| 661 | PL_origargv = argv; |
| 662 | PL_origargc = argc; |
| 663 | #ifndef VMS /* VMS doesn't have environ array */ |
| 664 | PL_origenviron = environ; |
| 665 | #endif |
| 666 | |
| 667 | if (PL_do_undump) { |
| 668 | |
| 669 | /* Come here if running an undumped a.out. */ |
| 670 | |
| 671 | PL_origfilename = savepv(argv[0]); |
| 672 | PL_do_undump = FALSE; |
| 673 | cxstack_ix = -1; /* start label stack again */ |
| 674 | init_ids(); |
| 675 | init_postdump_symbols(argc,argv,env); |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | if (PL_main_root) { |
| 680 | PL_curpad = AvARRAY(PL_comppad); |
| 681 | op_free(PL_main_root); |
| 682 | PL_main_root = Nullop; |
| 683 | } |
| 684 | PL_main_start = Nullop; |
| 685 | SvREFCNT_dec(PL_main_cv); |
| 686 | PL_main_cv = Nullcv; |
| 687 | |
| 688 | time(&PL_basetime); |
| 689 | oldscope = PL_scopestack_ix; |
| 690 | PL_dowarn = G_WARN_OFF; |
| 691 | |
| 692 | JMPENV_PUSH(ret); |
| 693 | switch (ret) { |
| 694 | case 1: |
| 695 | STATUS_ALL_FAILURE; |
| 696 | /* FALL THROUGH */ |
| 697 | case 2: |
| 698 | /* my_exit() was called */ |
| 699 | while (PL_scopestack_ix > oldscope) |
| 700 | LEAVE; |
| 701 | FREETMPS; |
| 702 | PL_curstash = PL_defstash; |
| 703 | if (PL_endav) |
| 704 | call_list(oldscope, PL_endav); |
| 705 | JMPENV_POP; |
| 706 | return STATUS_NATIVE_EXPORT; |
| 707 | case 3: |
| 708 | JMPENV_POP; |
| 709 | PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); |
| 710 | return 1; |
| 711 | } |
| 712 | |
| 713 | sv_setpvn(PL_linestr,"",0); |
| 714 | sv = newSVpv("",0); /* first used for -I flags */ |
| 715 | SAVEFREESV(sv); |
| 716 | init_main_stash(); |
| 717 | |
| 718 | for (argc--,argv++; argc > 0; argc--,argv++) { |
| 719 | if (argv[0][0] != '-' || !argv[0][1]) |
| 720 | break; |
| 721 | #ifdef DOSUID |
| 722 | if (*validarg) |
| 723 | validarg = " PHOOEY "; |
| 724 | else |
| 725 | validarg = argv[0]; |
| 726 | #endif |
| 727 | s = argv[0]+1; |
| 728 | reswitch: |
| 729 | switch (*s) { |
| 730 | case ' ': |
| 731 | case '0': |
| 732 | case 'F': |
| 733 | case 'a': |
| 734 | case 'c': |
| 735 | case 'd': |
| 736 | case 'D': |
| 737 | case 'h': |
| 738 | case 'i': |
| 739 | case 'l': |
| 740 | case 'M': |
| 741 | case 'm': |
| 742 | case 'n': |
| 743 | case 'p': |
| 744 | case 's': |
| 745 | case 'u': |
| 746 | case 'U': |
| 747 | case 'v': |
| 748 | case 'W': |
| 749 | case 'X': |
| 750 | case 'w': |
| 751 | if (s = moreswitches(s)) |
| 752 | goto reswitch; |
| 753 | break; |
| 754 | |
| 755 | case 'T': |
| 756 | PL_tainting = TRUE; |
| 757 | s++; |
| 758 | goto reswitch; |
| 759 | |
| 760 | case 'e': |
| 761 | if (PL_euid != PL_uid || PL_egid != PL_gid) |
| 762 | croak("No -e allowed in setuid scripts"); |
| 763 | if (!PL_e_script) { |
| 764 | PL_e_script = newSVpv("",0); |
| 765 | filter_add(read_e_script, NULL); |
| 766 | } |
| 767 | if (*++s) |
| 768 | sv_catpv(PL_e_script, s); |
| 769 | else if (argv[1]) { |
| 770 | sv_catpv(PL_e_script, argv[1]); |
| 771 | argc--,argv++; |
| 772 | } |
| 773 | else |
| 774 | croak("No code specified for -e"); |
| 775 | sv_catpv(PL_e_script, "\n"); |
| 776 | break; |
| 777 | |
| 778 | case 'I': /* -I handled both here and in moreswitches() */ |
| 779 | forbid_setid("-I"); |
| 780 | if (!*++s && (s=argv[1]) != Nullch) { |
| 781 | argc--,argv++; |
| 782 | } |
| 783 | while (s && isSPACE(*s)) |
| 784 | ++s; |
| 785 | if (s && *s) { |
| 786 | char *e, *p; |
| 787 | for (e = s; *e && !isSPACE(*e); e++) ; |
| 788 | p = savepvn(s, e-s); |
| 789 | incpush(p, TRUE); |
| 790 | sv_catpv(sv,"-I"); |
| 791 | sv_catpv(sv,p); |
| 792 | sv_catpv(sv," "); |
| 793 | Safefree(p); |
| 794 | } /* XXX else croak? */ |
| 795 | break; |
| 796 | case 'P': |
| 797 | forbid_setid("-P"); |
| 798 | PL_preprocess = TRUE; |
| 799 | s++; |
| 800 | goto reswitch; |
| 801 | case 'S': |
| 802 | forbid_setid("-S"); |
| 803 | dosearch = TRUE; |
| 804 | s++; |
| 805 | goto reswitch; |
| 806 | case 'V': |
| 807 | if (!PL_preambleav) |
| 808 | PL_preambleav = newAV(); |
| 809 | av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); |
| 810 | if (*++s != ':') { |
| 811 | PL_Sv = newSVpv("print myconfig();",0); |
| 812 | #ifdef VMS |
| 813 | sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); |
| 814 | #else |
| 815 | sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); |
| 816 | #endif |
| 817 | #if defined(DEBUGGING) || defined(MULTIPLICITY) |
| 818 | sv_catpv(PL_Sv,"\" Compile-time options:"); |
| 819 | # ifdef DEBUGGING |
| 820 | sv_catpv(PL_Sv," DEBUGGING"); |
| 821 | # endif |
| 822 | # ifdef MULTIPLICITY |
| 823 | sv_catpv(PL_Sv," MULTIPLICITY"); |
| 824 | # endif |
| 825 | sv_catpv(PL_Sv,"\\n\","); |
| 826 | #endif |
| 827 | #if defined(LOCAL_PATCH_COUNT) |
| 828 | if (LOCAL_PATCH_COUNT > 0) { |
| 829 | int i; |
| 830 | sv_catpv(PL_Sv,"\" Locally applied patches:\\n\","); |
| 831 | for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { |
| 832 | if (PL_localpatches[i]) |
| 833 | sv_catpvf(PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]); |
| 834 | } |
| 835 | } |
| 836 | #endif |
| 837 | sv_catpvf(PL_Sv,"\" Built under %s\\n\"",OSNAME); |
| 838 | #ifdef __DATE__ |
| 839 | # ifdef __TIME__ |
| 840 | sv_catpvf(PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); |
| 841 | # else |
| 842 | sv_catpvf(PL_Sv,",\" Compiled on %s\\n\"",__DATE__); |
| 843 | # endif |
| 844 | #endif |
| 845 | sv_catpv(PL_Sv, "; \ |
| 846 | $\"=\"\\n \"; \ |
| 847 | @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \ |
| 848 | print \" \\%ENV:\\n @env\\n\" if @env; \ |
| 849 | print \" \\@INC:\\n @INC\\n\";"); |
| 850 | } |
| 851 | else { |
| 852 | PL_Sv = newSVpv("config_vars(qw(",0); |
| 853 | sv_catpv(PL_Sv, ++s); |
| 854 | sv_catpv(PL_Sv, "))"); |
| 855 | s += strlen(s); |
| 856 | } |
| 857 | av_push(PL_preambleav, PL_Sv); |
| 858 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 859 | goto reswitch; |
| 860 | case 'x': |
| 861 | PL_doextract = TRUE; |
| 862 | s++; |
| 863 | if (*s) |
| 864 | PL_cddir = savepv(s); |
| 865 | break; |
| 866 | case 0: |
| 867 | break; |
| 868 | case '-': |
| 869 | if (!*++s || isSPACE(*s)) { |
| 870 | argc--,argv++; |
| 871 | goto switch_end; |
| 872 | } |
| 873 | /* catch use of gnu style long options */ |
| 874 | if (strEQ(s, "version")) { |
| 875 | s = "v"; |
| 876 | goto reswitch; |
| 877 | } |
| 878 | if (strEQ(s, "help")) { |
| 879 | s = "h"; |
| 880 | goto reswitch; |
| 881 | } |
| 882 | s--; |
| 883 | /* FALL THROUGH */ |
| 884 | default: |
| 885 | croak("Unrecognized switch: -%s (-h will show valid options)",s); |
| 886 | } |
| 887 | } |
| 888 | switch_end: |
| 889 | |
| 890 | if (!PL_tainting && (s = PerlEnv_getenv("PERL5OPT"))) { |
| 891 | while (s && *s) { |
| 892 | while (isSPACE(*s)) |
| 893 | s++; |
| 894 | if (*s == '-') { |
| 895 | s++; |
| 896 | if (isSPACE(*s)) |
| 897 | continue; |
| 898 | } |
| 899 | if (!*s) |
| 900 | break; |
| 901 | if (!strchr("DIMUdmw", *s)) |
| 902 | croak("Illegal switch in PERL5OPT: -%c", *s); |
| 903 | s = moreswitches(s); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | if (!scriptname) |
| 908 | scriptname = argv[0]; |
| 909 | if (PL_e_script) { |
| 910 | argc++,argv--; |
| 911 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 912 | } |
| 913 | else if (scriptname == Nullch) { |
| 914 | #ifdef MSDOS |
| 915 | if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) |
| 916 | moreswitches("h"); |
| 917 | #endif |
| 918 | scriptname = "-"; |
| 919 | } |
| 920 | |
| 921 | init_perllib(); |
| 922 | |
| 923 | open_script(scriptname,dosearch,sv,&fdscript); |
| 924 | |
| 925 | validate_suid(validarg, scriptname,fdscript); |
| 926 | |
| 927 | if (PL_doextract) |
| 928 | find_beginning(); |
| 929 | |
| 930 | PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0); |
| 931 | sv_upgrade((SV *)PL_compcv, SVt_PVCV); |
| 932 | CvUNIQUE_on(PL_compcv); |
| 933 | |
| 934 | PL_comppad = newAV(); |
| 935 | av_push(PL_comppad, Nullsv); |
| 936 | PL_curpad = AvARRAY(PL_comppad); |
| 937 | PL_comppad_name = newAV(); |
| 938 | PL_comppad_name_fill = 0; |
| 939 | PL_min_intro_pending = 0; |
| 940 | PL_padix = 0; |
| 941 | #ifdef USE_THREADS |
| 942 | av_store(PL_comppad_name, 0, newSVpv("@_", 2)); |
| 943 | PL_curpad[0] = (SV*)newAV(); |
| 944 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ |
| 945 | CvOWNER(PL_compcv) = 0; |
| 946 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); |
| 947 | MUTEX_INIT(CvMUTEXP(PL_compcv)); |
| 948 | #endif /* USE_THREADS */ |
| 949 | |
| 950 | comppadlist = newAV(); |
| 951 | AvREAL_off(comppadlist); |
| 952 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
| 953 | av_store(comppadlist, 1, (SV*)PL_comppad); |
| 954 | CvPADLIST(PL_compcv) = comppadlist; |
| 955 | |
| 956 | boot_core_UNIVERSAL(); |
| 957 | |
| 958 | if (xsinit) |
| 959 | (*xsinit)(PERL_OBJECT_THIS); /* in case linked C routines want magical variables */ |
| 960 | #if defined(VMS) || defined(WIN32) || defined(DJGPP) |
| 961 | init_os_extras(); |
| 962 | #endif |
| 963 | |
| 964 | init_predump_symbols(); |
| 965 | /* init_postdump_symbols not currently designed to be called */ |
| 966 | /* more than once (ENV isn't cleared first, for example) */ |
| 967 | /* But running with -u leaves %ENV & @ARGV undefined! XXX */ |
| 968 | if (!PL_do_undump) |
| 969 | init_postdump_symbols(argc,argv,env); |
| 970 | |
| 971 | init_lexer(); |
| 972 | |
| 973 | /* now parse the script */ |
| 974 | |
| 975 | SETERRNO(0,SS$_NORMAL); |
| 976 | PL_error_count = 0; |
| 977 | if (yyparse() || PL_error_count) { |
| 978 | if (PL_minus_c) |
| 979 | croak("%s had compilation errors.\n", PL_origfilename); |
| 980 | else { |
| 981 | croak("Execution of %s aborted due to compilation errors.\n", |
| 982 | PL_origfilename); |
| 983 | } |
| 984 | } |
| 985 | PL_curcop->cop_line = 0; |
| 986 | PL_curstash = PL_defstash; |
| 987 | PL_preprocess = FALSE; |
| 988 | if (PL_e_script) { |
| 989 | SvREFCNT_dec(PL_e_script); |
| 990 | PL_e_script = Nullsv; |
| 991 | } |
| 992 | |
| 993 | /* now that script is parsed, we can modify record separator */ |
| 994 | SvREFCNT_dec(PL_rs); |
| 995 | PL_rs = SvREFCNT_inc(PL_nrs); |
| 996 | sv_setsv(perl_get_sv("/", TRUE), PL_rs); |
| 997 | if (PL_do_undump) |
| 998 | my_unexec(); |
| 999 | |
| 1000 | if (ckWARN(WARN_ONCE)) |
| 1001 | gv_check(PL_defstash); |
| 1002 | |
| 1003 | LEAVE; |
| 1004 | FREETMPS; |
| 1005 | |
| 1006 | #ifdef MYMALLOC |
| 1007 | if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) |
| 1008 | dump_mstats("after compilation:"); |
| 1009 | #endif |
| 1010 | |
| 1011 | ENTER; |
| 1012 | PL_restartop = 0; |
| 1013 | JMPENV_POP; |
| 1014 | return 0; |
| 1015 | } |
| 1016 | |
| 1017 | int |
| 1018 | #ifdef PERL_OBJECT |
| 1019 | perl_run(void) |
| 1020 | #else |
| 1021 | perl_run(PerlInterpreter *sv_interp) |
| 1022 | #endif |
| 1023 | { |
| 1024 | dTHR; |
| 1025 | I32 oldscope; |
| 1026 | dJMPENV; |
| 1027 | int ret; |
| 1028 | |
| 1029 | #ifndef PERL_OBJECT |
| 1030 | if (!(PL_curinterp = sv_interp)) |
| 1031 | return 255; |
| 1032 | #endif |
| 1033 | |
| 1034 | oldscope = PL_scopestack_ix; |
| 1035 | |
| 1036 | JMPENV_PUSH(ret); |
| 1037 | switch (ret) { |
| 1038 | case 1: |
| 1039 | cxstack_ix = -1; /* start context stack again */ |
| 1040 | break; |
| 1041 | case 2: |
| 1042 | /* my_exit() was called */ |
| 1043 | while (PL_scopestack_ix > oldscope) |
| 1044 | LEAVE; |
| 1045 | FREETMPS; |
| 1046 | PL_curstash = PL_defstash; |
| 1047 | if (PL_endav) |
| 1048 | call_list(oldscope, PL_endav); |
| 1049 | #ifdef MYMALLOC |
| 1050 | if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) |
| 1051 | dump_mstats("after execution: "); |
| 1052 | #endif |
| 1053 | JMPENV_POP; |
| 1054 | return STATUS_NATIVE_EXPORT; |
| 1055 | case 3: |
| 1056 | if (!PL_restartop) { |
| 1057 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
| 1058 | FREETMPS; |
| 1059 | JMPENV_POP; |
| 1060 | return 1; |
| 1061 | } |
| 1062 | POPSTACK_TO(PL_mainstack); |
| 1063 | break; |
| 1064 | } |
| 1065 | |
| 1066 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", |
| 1067 | PL_sawampersand ? "Enabling" : "Omitting")); |
| 1068 | |
| 1069 | if (!PL_restartop) { |
| 1070 | DEBUG_x(dump_all()); |
| 1071 | DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
| 1072 | DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n", |
| 1073 | (unsigned long) thr)); |
| 1074 | |
| 1075 | if (PL_minus_c) { |
| 1076 | PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", PL_origfilename); |
| 1077 | my_exit(0); |
| 1078 | } |
| 1079 | if (PERLDB_SINGLE && PL_DBsingle) |
| 1080 | sv_setiv(PL_DBsingle, 1); |
| 1081 | if (PL_initav) |
| 1082 | call_list(oldscope, PL_initav); |
| 1083 | } |
| 1084 | |
| 1085 | /* do it */ |
| 1086 | |
| 1087 | if (PL_restartop) { |
| 1088 | PL_op = PL_restartop; |
| 1089 | PL_restartop = 0; |
| 1090 | CALLRUNOPS(); |
| 1091 | } |
| 1092 | else if (PL_main_start) { |
| 1093 | CvDEPTH(PL_main_cv) = 1; |
| 1094 | PL_op = PL_main_start; |
| 1095 | CALLRUNOPS(); |
| 1096 | } |
| 1097 | |
| 1098 | my_exit(0); |
| 1099 | /* NOTREACHED */ |
| 1100 | return 0; |
| 1101 | } |
| 1102 | |
| 1103 | SV* |
| 1104 | perl_get_sv(char *name, I32 create) |
| 1105 | { |
| 1106 | GV *gv; |
| 1107 | #ifdef USE_THREADS |
| 1108 | if (name[1] == '\0' && !isALPHA(name[0])) { |
| 1109 | PADOFFSET tmp = find_threadsv(name); |
| 1110 | if (tmp != NOT_IN_PAD) { |
| 1111 | dTHR; |
| 1112 | return THREADSV(tmp); |
| 1113 | } |
| 1114 | } |
| 1115 | #endif /* USE_THREADS */ |
| 1116 | gv = gv_fetchpv(name, create, SVt_PV); |
| 1117 | if (gv) |
| 1118 | return GvSV(gv); |
| 1119 | return Nullsv; |
| 1120 | } |
| 1121 | |
| 1122 | AV* |
| 1123 | perl_get_av(char *name, I32 create) |
| 1124 | { |
| 1125 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); |
| 1126 | if (create) |
| 1127 | return GvAVn(gv); |
| 1128 | if (gv) |
| 1129 | return GvAV(gv); |
| 1130 | return Nullav; |
| 1131 | } |
| 1132 | |
| 1133 | HV* |
| 1134 | perl_get_hv(char *name, I32 create) |
| 1135 | { |
| 1136 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); |
| 1137 | if (create) |
| 1138 | return GvHVn(gv); |
| 1139 | if (gv) |
| 1140 | return GvHV(gv); |
| 1141 | return Nullhv; |
| 1142 | } |
| 1143 | |
| 1144 | CV* |
| 1145 | perl_get_cv(char *name, I32 create) |
| 1146 | { |
| 1147 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); |
| 1148 | /* XXX unsafe for threads if eval_owner isn't held */ |
| 1149 | if (create && !GvCVu(gv)) |
| 1150 | return newSUB(start_subparse(FALSE, 0), |
| 1151 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
| 1152 | Nullop, |
| 1153 | Nullop); |
| 1154 | if (gv) |
| 1155 | return GvCVu(gv); |
| 1156 | return Nullcv; |
| 1157 | } |
| 1158 | |
| 1159 | /* Be sure to refetch the stack pointer after calling these routines. */ |
| 1160 | |
| 1161 | I32 |
| 1162 | perl_call_argv(char *sub_name, I32 flags, register char **argv) |
| 1163 | |
| 1164 | /* See G_* flags in cop.h */ |
| 1165 | /* null terminated arg list */ |
| 1166 | { |
| 1167 | dSP; |
| 1168 | |
| 1169 | PUSHMARK(SP); |
| 1170 | if (argv) { |
| 1171 | while (*argv) { |
| 1172 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
| 1173 | argv++; |
| 1174 | } |
| 1175 | PUTBACK; |
| 1176 | } |
| 1177 | return perl_call_pv(sub_name, flags); |
| 1178 | } |
| 1179 | |
| 1180 | I32 |
| 1181 | perl_call_pv(char *sub_name, I32 flags) |
| 1182 | /* name of the subroutine */ |
| 1183 | /* See G_* flags in cop.h */ |
| 1184 | { |
| 1185 | return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags); |
| 1186 | } |
| 1187 | |
| 1188 | I32 |
| 1189 | perl_call_method(char *methname, I32 flags) |
| 1190 | /* name of the subroutine */ |
| 1191 | /* See G_* flags in cop.h */ |
| 1192 | { |
| 1193 | dSP; |
| 1194 | OP myop; |
| 1195 | if (!PL_op) |
| 1196 | PL_op = &myop; |
| 1197 | XPUSHs(sv_2mortal(newSVpv(methname,0))); |
| 1198 | PUTBACK; |
| 1199 | pp_method(ARGS); |
| 1200 | if(PL_op == &myop) |
| 1201 | PL_op = Nullop; |
| 1202 | return perl_call_sv(*PL_stack_sp--, flags); |
| 1203 | } |
| 1204 | |
| 1205 | /* May be called with any of a CV, a GV, or an SV containing the name. */ |
| 1206 | I32 |
| 1207 | perl_call_sv(SV *sv, I32 flags) |
| 1208 | |
| 1209 | /* See G_* flags in cop.h */ |
| 1210 | { |
| 1211 | dSP; |
| 1212 | LOGOP myop; /* fake syntax tree node */ |
| 1213 | I32 oldmark; |
| 1214 | I32 retval; |
| 1215 | I32 oldscope; |
| 1216 | bool oldcatch = CATCH_GET; |
| 1217 | dJMPENV; |
| 1218 | int ret; |
| 1219 | OP* oldop = PL_op; |
| 1220 | |
| 1221 | if (flags & G_DISCARD) { |
| 1222 | ENTER; |
| 1223 | SAVETMPS; |
| 1224 | } |
| 1225 | |
| 1226 | Zero(&myop, 1, LOGOP); |
| 1227 | myop.op_next = Nullop; |
| 1228 | if (!(flags & G_NOARGS)) |
| 1229 | myop.op_flags |= OPf_STACKED; |
| 1230 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1231 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1232 | OPf_WANT_SCALAR); |
| 1233 | SAVEOP(); |
| 1234 | PL_op = (OP*)&myop; |
| 1235 | |
| 1236 | EXTEND(PL_stack_sp, 1); |
| 1237 | *++PL_stack_sp = sv; |
| 1238 | oldmark = TOPMARK; |
| 1239 | oldscope = PL_scopestack_ix; |
| 1240 | |
| 1241 | if (PERLDB_SUB && PL_curstash != PL_debstash |
| 1242 | /* Handle first BEGIN of -d. */ |
| 1243 | && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) |
| 1244 | /* Try harder, since this may have been a sighandler, thus |
| 1245 | * curstash may be meaningless. */ |
| 1246 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash) |
| 1247 | && !(flags & G_NODEBUG)) |
| 1248 | PL_op->op_private |= OPpENTERSUB_DB; |
| 1249 | |
| 1250 | if (flags & G_EVAL) { |
| 1251 | cLOGOP->op_other = PL_op; |
| 1252 | PL_markstack_ptr--; |
| 1253 | /* we're trying to emulate pp_entertry() here */ |
| 1254 | { |
| 1255 | register PERL_CONTEXT *cx; |
| 1256 | I32 gimme = GIMME_V; |
| 1257 | |
| 1258 | ENTER; |
| 1259 | SAVETMPS; |
| 1260 | |
| 1261 | push_return(PL_op->op_next); |
| 1262 | PUSHBLOCK(cx, CXt_EVAL, PL_stack_sp); |
| 1263 | PUSHEVAL(cx, 0, 0); |
| 1264 | PL_eval_root = PL_op; /* Only needed so that goto works right. */ |
| 1265 | |
| 1266 | PL_in_eval = 1; |
| 1267 | if (flags & G_KEEPERR) |
| 1268 | PL_in_eval |= 4; |
| 1269 | else |
| 1270 | sv_setpv(ERRSV,""); |
| 1271 | } |
| 1272 | PL_markstack_ptr++; |
| 1273 | |
| 1274 | JMPENV_PUSH(ret); |
| 1275 | switch (ret) { |
| 1276 | case 0: |
| 1277 | break; |
| 1278 | case 1: |
| 1279 | STATUS_ALL_FAILURE; |
| 1280 | /* FALL THROUGH */ |
| 1281 | case 2: |
| 1282 | /* my_exit() was called */ |
| 1283 | PL_curstash = PL_defstash; |
| 1284 | FREETMPS; |
| 1285 | JMPENV_POP; |
| 1286 | if (PL_statusvalue) |
| 1287 | croak("Callback called exit"); |
| 1288 | my_exit_jump(); |
| 1289 | /* NOTREACHED */ |
| 1290 | case 3: |
| 1291 | if (PL_restartop) { |
| 1292 | PL_op = PL_restartop; |
| 1293 | PL_restartop = 0; |
| 1294 | break; |
| 1295 | } |
| 1296 | PL_stack_sp = PL_stack_base + oldmark; |
| 1297 | if (flags & G_ARRAY) |
| 1298 | retval = 0; |
| 1299 | else { |
| 1300 | retval = 1; |
| 1301 | *++PL_stack_sp = &PL_sv_undef; |
| 1302 | } |
| 1303 | goto cleanup; |
| 1304 | } |
| 1305 | } |
| 1306 | else |
| 1307 | CATCH_SET(TRUE); |
| 1308 | |
| 1309 | if (PL_op == (OP*)&myop) |
| 1310 | PL_op = pp_entersub(ARGS); |
| 1311 | if (PL_op) |
| 1312 | CALLRUNOPS(); |
| 1313 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 1314 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
| 1315 | sv_setpv(ERRSV,""); |
| 1316 | |
| 1317 | cleanup: |
| 1318 | if (flags & G_EVAL) { |
| 1319 | if (PL_scopestack_ix > oldscope) { |
| 1320 | SV **newsp; |
| 1321 | PMOP *newpm; |
| 1322 | I32 gimme; |
| 1323 | register PERL_CONTEXT *cx; |
| 1324 | I32 optype; |
| 1325 | |
| 1326 | POPBLOCK(cx,newpm); |
| 1327 | POPEVAL(cx); |
| 1328 | pop_return(); |
| 1329 | PL_curpm = newpm; |
| 1330 | LEAVE; |
| 1331 | } |
| 1332 | JMPENV_POP; |
| 1333 | } |
| 1334 | else |
| 1335 | CATCH_SET(oldcatch); |
| 1336 | |
| 1337 | if (flags & G_DISCARD) { |
| 1338 | PL_stack_sp = PL_stack_base + oldmark; |
| 1339 | retval = 0; |
| 1340 | FREETMPS; |
| 1341 | LEAVE; |
| 1342 | } |
| 1343 | PL_op = oldop; |
| 1344 | return retval; |
| 1345 | } |
| 1346 | |
| 1347 | /* Eval a string. The G_EVAL flag is always assumed. */ |
| 1348 | |
| 1349 | I32 |
| 1350 | perl_eval_sv(SV *sv, I32 flags) |
| 1351 | |
| 1352 | /* See G_* flags in cop.h */ |
| 1353 | { |
| 1354 | dSP; |
| 1355 | UNOP myop; /* fake syntax tree node */ |
| 1356 | I32 oldmark = SP - PL_stack_base; |
| 1357 | I32 retval; |
| 1358 | I32 oldscope; |
| 1359 | dJMPENV; |
| 1360 | int ret; |
| 1361 | OP* oldop = PL_op; |
| 1362 | |
| 1363 | if (flags & G_DISCARD) { |
| 1364 | ENTER; |
| 1365 | SAVETMPS; |
| 1366 | } |
| 1367 | |
| 1368 | SAVEOP(); |
| 1369 | PL_op = (OP*)&myop; |
| 1370 | Zero(PL_op, 1, UNOP); |
| 1371 | EXTEND(PL_stack_sp, 1); |
| 1372 | *++PL_stack_sp = sv; |
| 1373 | oldscope = PL_scopestack_ix; |
| 1374 | |
| 1375 | if (!(flags & G_NOARGS)) |
| 1376 | myop.op_flags = OPf_STACKED; |
| 1377 | myop.op_next = Nullop; |
| 1378 | myop.op_type = OP_ENTEREVAL; |
| 1379 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1380 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1381 | OPf_WANT_SCALAR); |
| 1382 | if (flags & G_KEEPERR) |
| 1383 | myop.op_flags |= OPf_SPECIAL; |
| 1384 | |
| 1385 | JMPENV_PUSH(ret); |
| 1386 | switch (ret) { |
| 1387 | case 0: |
| 1388 | break; |
| 1389 | case 1: |
| 1390 | STATUS_ALL_FAILURE; |
| 1391 | /* FALL THROUGH */ |
| 1392 | case 2: |
| 1393 | /* my_exit() was called */ |
| 1394 | PL_curstash = PL_defstash; |
| 1395 | FREETMPS; |
| 1396 | JMPENV_POP; |
| 1397 | if (PL_statusvalue) |
| 1398 | croak("Callback called exit"); |
| 1399 | my_exit_jump(); |
| 1400 | /* NOTREACHED */ |
| 1401 | case 3: |
| 1402 | if (PL_restartop) { |
| 1403 | PL_op = PL_restartop; |
| 1404 | PL_restartop = 0; |
| 1405 | break; |
| 1406 | } |
| 1407 | PL_stack_sp = PL_stack_base + oldmark; |
| 1408 | if (flags & G_ARRAY) |
| 1409 | retval = 0; |
| 1410 | else { |
| 1411 | retval = 1; |
| 1412 | *++PL_stack_sp = &PL_sv_undef; |
| 1413 | } |
| 1414 | goto cleanup; |
| 1415 | } |
| 1416 | |
| 1417 | if (PL_op == (OP*)&myop) |
| 1418 | PL_op = pp_entereval(ARGS); |
| 1419 | if (PL_op) |
| 1420 | CALLRUNOPS(); |
| 1421 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 1422 | if (!(flags & G_KEEPERR)) |
| 1423 | sv_setpv(ERRSV,""); |
| 1424 | |
| 1425 | cleanup: |
| 1426 | JMPENV_POP; |
| 1427 | if (flags & G_DISCARD) { |
| 1428 | PL_stack_sp = PL_stack_base + oldmark; |
| 1429 | retval = 0; |
| 1430 | FREETMPS; |
| 1431 | LEAVE; |
| 1432 | } |
| 1433 | PL_op = oldop; |
| 1434 | return retval; |
| 1435 | } |
| 1436 | |
| 1437 | SV* |
| 1438 | perl_eval_pv(char *p, I32 croak_on_error) |
| 1439 | { |
| 1440 | dSP; |
| 1441 | SV* sv = newSVpv(p, 0); |
| 1442 | |
| 1443 | PUSHMARK(SP); |
| 1444 | perl_eval_sv(sv, G_SCALAR); |
| 1445 | SvREFCNT_dec(sv); |
| 1446 | |
| 1447 | SPAGAIN; |
| 1448 | sv = POPs; |
| 1449 | PUTBACK; |
| 1450 | |
| 1451 | if (croak_on_error && SvTRUE(ERRSV)) { |
| 1452 | STRLEN n_a; |
| 1453 | croak(SvPVx(ERRSV, n_a)); |
| 1454 | } |
| 1455 | |
| 1456 | return sv; |
| 1457 | } |
| 1458 | |
| 1459 | /* Require a module. */ |
| 1460 | |
| 1461 | void |
| 1462 | perl_require_pv(char *pv) |
| 1463 | { |
| 1464 | SV* sv; |
| 1465 | dSP; |
| 1466 | PUSHSTACKi(PERLSI_REQUIRE); |
| 1467 | PUTBACK; |
| 1468 | sv = sv_newmortal(); |
| 1469 | sv_setpv(sv, "require '"); |
| 1470 | sv_catpv(sv, pv); |
| 1471 | sv_catpv(sv, "'"); |
| 1472 | perl_eval_sv(sv, G_DISCARD); |
| 1473 | SPAGAIN; |
| 1474 | POPSTACK; |
| 1475 | } |
| 1476 | |
| 1477 | void |
| 1478 | magicname(char *sym, char *name, I32 namlen) |
| 1479 | { |
| 1480 | register GV *gv; |
| 1481 | |
| 1482 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
| 1483 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
| 1484 | } |
| 1485 | |
| 1486 | STATIC void |
| 1487 | usage(char *name) /* XXX move this out into a module ? */ |
| 1488 | |
| 1489 | { |
| 1490 | /* This message really ought to be max 23 lines. |
| 1491 | * Removed -h because the user already knows that opton. Others? */ |
| 1492 | |
| 1493 | static char *usage_msg[] = { |
| 1494 | "-0[octal] specify record separator (\\0, if no argument)", |
| 1495 | "-a autosplit mode with -n or -p (splits $_ into @F)", |
| 1496 | "-c check syntax only (runs BEGIN and END blocks)", |
| 1497 | "-d[:debugger] run scripts under debugger", |
| 1498 | "-D[number/list] set debugging flags (argument is a bit mask or flags)", |
| 1499 | "-e 'command' one line of script. Several -e's allowed. Omit [programfile].", |
| 1500 | "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.", |
| 1501 | "-i[extension] edit <> files in place (make backup if extension supplied)", |
| 1502 | "-Idirectory specify @INC/#include directory (may be used more than once)", |
| 1503 | "-l[octal] enable line ending processing, specifies line terminator", |
| 1504 | "-[mM][-]module.. executes `use/no module...' before executing your script.", |
| 1505 | "-n assume 'while (<>) { ... }' loop around your script", |
| 1506 | "-p assume loop like -n but print line also like sed", |
| 1507 | "-P run script through C preprocessor before compilation", |
| 1508 | "-s enable some switch parsing for switches after script name", |
| 1509 | "-S look for the script using PATH environment variable", |
| 1510 | "-T turn on tainting checks", |
| 1511 | "-u dump core after parsing script", |
| 1512 | "-U allow unsafe operations", |
| 1513 | "-v print version number, patchlevel plus VERY IMPORTANT perl info", |
| 1514 | "-V[:variable] print perl configuration information", |
| 1515 | "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.", |
| 1516 | "-x[directory] strip off text before #!perl line and perhaps cd to directory", |
| 1517 | "\n", |
| 1518 | NULL |
| 1519 | }; |
| 1520 | char **p = usage_msg; |
| 1521 | |
| 1522 | printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name); |
| 1523 | while (*p) |
| 1524 | printf("\n %s", *p++); |
| 1525 | } |
| 1526 | |
| 1527 | /* This routine handles any switches that can be given during run */ |
| 1528 | |
| 1529 | char * |
| 1530 | moreswitches(char *s) |
| 1531 | { |
| 1532 | I32 numlen; |
| 1533 | U32 rschar; |
| 1534 | |
| 1535 | switch (*s) { |
| 1536 | case '0': |
| 1537 | { |
| 1538 | dTHR; |
| 1539 | rschar = scan_oct(s, 4, &numlen); |
| 1540 | SvREFCNT_dec(PL_nrs); |
| 1541 | if (rschar & ~((U8)~0)) |
| 1542 | PL_nrs = &PL_sv_undef; |
| 1543 | else if (!rschar && numlen >= 2) |
| 1544 | PL_nrs = newSVpv("", 0); |
| 1545 | else { |
| 1546 | char ch = rschar; |
| 1547 | PL_nrs = newSVpv(&ch, 1); |
| 1548 | } |
| 1549 | return s + numlen; |
| 1550 | } |
| 1551 | case 'F': |
| 1552 | PL_minus_F = TRUE; |
| 1553 | PL_splitstr = savepv(s + 1); |
| 1554 | s += strlen(s); |
| 1555 | return s; |
| 1556 | case 'a': |
| 1557 | PL_minus_a = TRUE; |
| 1558 | s++; |
| 1559 | return s; |
| 1560 | case 'c': |
| 1561 | PL_minus_c = TRUE; |
| 1562 | s++; |
| 1563 | return s; |
| 1564 | case 'd': |
| 1565 | forbid_setid("-d"); |
| 1566 | s++; |
| 1567 | if (*s == ':' || *s == '=') { |
| 1568 | my_setenv("PERL5DB", form("use Devel::%s;", ++s)); |
| 1569 | s += strlen(s); |
| 1570 | } |
| 1571 | if (!PL_perldb) { |
| 1572 | PL_perldb = PERLDB_ALL; |
| 1573 | init_debugger(); |
| 1574 | } |
| 1575 | return s; |
| 1576 | case 'D': |
| 1577 | #ifdef DEBUGGING |
| 1578 | forbid_setid("-D"); |
| 1579 | if (isALPHA(s[1])) { |
| 1580 | static char debopts[] = "psltocPmfrxuLHXDS"; |
| 1581 | char *d; |
| 1582 | |
| 1583 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
| 1584 | PL_debug |= 1 << (d - debopts); |
| 1585 | } |
| 1586 | else { |
| 1587 | PL_debug = atoi(s+1); |
| 1588 | for (s++; isDIGIT(*s); s++) ; |
| 1589 | } |
| 1590 | PL_debug |= 0x80000000; |
| 1591 | #else |
| 1592 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); |
| 1593 | for (s++; isALNUM(*s); s++) ; |
| 1594 | #endif |
| 1595 | /*SUPPRESS 530*/ |
| 1596 | return s; |
| 1597 | case 'h': |
| 1598 | usage(PL_origargv[0]); |
| 1599 | PerlProc_exit(0); |
| 1600 | case 'i': |
| 1601 | if (PL_inplace) |
| 1602 | Safefree(PL_inplace); |
| 1603 | PL_inplace = savepv(s+1); |
| 1604 | /*SUPPRESS 530*/ |
| 1605 | for (s = PL_inplace; *s && !isSPACE(*s); s++) ; |
| 1606 | if (*s) { |
| 1607 | *s++ = '\0'; |
| 1608 | if (*s == '-') /* Additional switches on #! line. */ |
| 1609 | s++; |
| 1610 | } |
| 1611 | return s; |
| 1612 | case 'I': /* -I handled both here and in parse_perl() */ |
| 1613 | forbid_setid("-I"); |
| 1614 | ++s; |
| 1615 | while (*s && isSPACE(*s)) |
| 1616 | ++s; |
| 1617 | if (*s) { |
| 1618 | char *e, *p; |
| 1619 | for (e = s; *e && !isSPACE(*e); e++) ; |
| 1620 | p = savepvn(s, e-s); |
| 1621 | incpush(p, TRUE); |
| 1622 | Safefree(p); |
| 1623 | s = e; |
| 1624 | } |
| 1625 | else |
| 1626 | croak("No space allowed after -I"); |
| 1627 | return s; |
| 1628 | case 'l': |
| 1629 | PL_minus_l = TRUE; |
| 1630 | s++; |
| 1631 | if (PL_ors) |
| 1632 | Safefree(PL_ors); |
| 1633 | if (isDIGIT(*s)) { |
| 1634 | PL_ors = savepv("\n"); |
| 1635 | PL_orslen = 1; |
| 1636 | *PL_ors = scan_oct(s, 3 + (*s == '0'), &numlen); |
| 1637 | s += numlen; |
| 1638 | } |
| 1639 | else { |
| 1640 | dTHR; |
| 1641 | if (RsPARA(PL_nrs)) { |
| 1642 | PL_ors = "\n\n"; |
| 1643 | PL_orslen = 2; |
| 1644 | } |
| 1645 | else |
| 1646 | PL_ors = SvPV(PL_nrs, PL_orslen); |
| 1647 | PL_ors = savepvn(PL_ors, PL_orslen); |
| 1648 | } |
| 1649 | return s; |
| 1650 | case 'M': |
| 1651 | forbid_setid("-M"); /* XXX ? */ |
| 1652 | /* FALL THROUGH */ |
| 1653 | case 'm': |
| 1654 | forbid_setid("-m"); /* XXX ? */ |
| 1655 | if (*++s) { |
| 1656 | char *start; |
| 1657 | SV *sv; |
| 1658 | char *use = "use "; |
| 1659 | /* -M-foo == 'no foo' */ |
| 1660 | if (*s == '-') { use = "no "; ++s; } |
| 1661 | sv = newSVpv(use,0); |
| 1662 | start = s; |
| 1663 | /* We allow -M'Module qw(Foo Bar)' */ |
| 1664 | while(isALNUM(*s) || *s==':') ++s; |
| 1665 | if (*s != '=') { |
| 1666 | sv_catpv(sv, start); |
| 1667 | if (*(start-1) == 'm') { |
| 1668 | if (*s != '\0') |
| 1669 | croak("Can't use '%c' after -mname", *s); |
| 1670 | sv_catpv( sv, " ()"); |
| 1671 | } |
| 1672 | } else { |
| 1673 | sv_catpvn(sv, start, s-start); |
| 1674 | sv_catpv(sv, " split(/,/,q{"); |
| 1675 | sv_catpv(sv, ++s); |
| 1676 | sv_catpv(sv, "})"); |
| 1677 | } |
| 1678 | s += strlen(s); |
| 1679 | if (PL_preambleav == NULL) |
| 1680 | PL_preambleav = newAV(); |
| 1681 | av_push(PL_preambleav, sv); |
| 1682 | } |
| 1683 | else |
| 1684 | croak("No space allowed after -%c", *(s-1)); |
| 1685 | return s; |
| 1686 | case 'n': |
| 1687 | PL_minus_n = TRUE; |
| 1688 | s++; |
| 1689 | return s; |
| 1690 | case 'p': |
| 1691 | PL_minus_p = TRUE; |
| 1692 | s++; |
| 1693 | return s; |
| 1694 | case 's': |
| 1695 | forbid_setid("-s"); |
| 1696 | PL_doswitches = TRUE; |
| 1697 | s++; |
| 1698 | return s; |
| 1699 | case 'T': |
| 1700 | if (!PL_tainting) |
| 1701 | croak("Too late for \"-T\" option"); |
| 1702 | s++; |
| 1703 | return s; |
| 1704 | case 'u': |
| 1705 | PL_do_undump = TRUE; |
| 1706 | s++; |
| 1707 | return s; |
| 1708 | case 'U': |
| 1709 | PL_unsafe = TRUE; |
| 1710 | s++; |
| 1711 | return s; |
| 1712 | case 'v': |
| 1713 | #if defined(SUBVERSION) && SUBVERSION > 0 |
| 1714 | printf("\nThis is perl, version 5.%03d_%02d built for %s", |
| 1715 | PATCHLEVEL, SUBVERSION, ARCHNAME); |
| 1716 | #else |
| 1717 | printf("\nThis is perl, version %s built for %s", |
| 1718 | PL_patchlevel, ARCHNAME); |
| 1719 | #endif |
| 1720 | #if defined(LOCAL_PATCH_COUNT) |
| 1721 | if (LOCAL_PATCH_COUNT > 0) |
| 1722 | printf("\n(with %d registered patch%s, see perl -V for more detail)", |
| 1723 | LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : ""); |
| 1724 | #endif |
| 1725 | |
| 1726 | printf("\n\nCopyright 1987-1998, Larry Wall\n"); |
| 1727 | #ifdef MSDOS |
| 1728 | printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
| 1729 | #endif |
| 1730 | #ifdef DJGPP |
| 1731 | printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"); |
| 1732 | printf("djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1998\n"); |
| 1733 | #endif |
| 1734 | #ifdef OS2 |
| 1735 | printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
| 1736 | "Version 5 port Copyright (c) 1994-1998, Andreas Kaiser, Ilya Zakharevich\n"); |
| 1737 | #endif |
| 1738 | #ifdef atarist |
| 1739 | printf("atariST series port, ++jrb bammi@cadence.com\n"); |
| 1740 | #endif |
| 1741 | #ifdef __BEOS__ |
| 1742 | printf("BeOS port Copyright Tom Spindler, 1997-1998\n"); |
| 1743 | #endif |
| 1744 | #ifdef MPE |
| 1745 | printf("MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1998\n"); |
| 1746 | #endif |
| 1747 | #ifdef OEMVS |
| 1748 | printf("MVS (OS390) port by Mortice Kern Systems, 1997-1998\n"); |
| 1749 | #endif |
| 1750 | #ifdef __VOS__ |
| 1751 | printf("Stratus VOS port by Paul_Green@stratus.com, 1997-1998\n"); |
| 1752 | #endif |
| 1753 | #ifdef __OPEN_VM |
| 1754 | printf("VM/ESA port by Neale Ferguson, 1998\n"); |
| 1755 | #endif |
| 1756 | #ifdef POSIX_BC |
| 1757 | printf("BS2000 (POSIX) port by Start Amadeus GmbH, 1998\n"); |
| 1758 | #endif |
| 1759 | #ifdef __MINT__ |
| 1760 | printf("MiNT port by Guido Flohr, 1997\n"); |
| 1761 | #endif |
| 1762 | #ifdef BINARY_BUILD_NOTICE |
| 1763 | BINARY_BUILD_NOTICE; |
| 1764 | #endif |
| 1765 | printf("\n\ |
| 1766 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
| 1767 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\ |
| 1768 | Complete documentation for Perl, including FAQ lists, should be found on\n\ |
| 1769 | this system using `man perl' or `perldoc perl'. If you have access to the\n\ |
| 1770 | Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n"); |
| 1771 | PerlProc_exit(0); |
| 1772 | case 'w': |
| 1773 | if (! (PL_dowarn & G_WARN_ALL_MASK)) |
| 1774 | PL_dowarn |= G_WARN_ON; |
| 1775 | s++; |
| 1776 | return s; |
| 1777 | case 'W': |
| 1778 | PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; |
| 1779 | PL_compiling.cop_warnings = WARN_ALL ; |
| 1780 | s++; |
| 1781 | return s; |
| 1782 | case 'X': |
| 1783 | PL_dowarn = G_WARN_ALL_OFF; |
| 1784 | PL_compiling.cop_warnings = WARN_NONE ; |
| 1785 | s++; |
| 1786 | return s; |
| 1787 | case '*': |
| 1788 | case ' ': |
| 1789 | if (s[1] == '-') /* Additional switches on #! line. */ |
| 1790 | return s+2; |
| 1791 | break; |
| 1792 | case '-': |
| 1793 | case 0: |
| 1794 | #if defined(WIN32) || !defined(PERL_STRICT_CR) |
| 1795 | case '\r': |
| 1796 | #endif |
| 1797 | case '\n': |
| 1798 | case '\t': |
| 1799 | break; |
| 1800 | #ifdef ALTERNATE_SHEBANG |
| 1801 | case 'S': /* OS/2 needs -S on "extproc" line. */ |
| 1802 | break; |
| 1803 | #endif |
| 1804 | case 'P': |
| 1805 | if (PL_preprocess) |
| 1806 | return s+1; |
| 1807 | /* FALL THROUGH */ |
| 1808 | default: |
| 1809 | croak("Can't emulate -%.1s on #! line",s); |
| 1810 | } |
| 1811 | return Nullch; |
| 1812 | } |
| 1813 | |
| 1814 | /* compliments of Tom Christiansen */ |
| 1815 | |
| 1816 | /* unexec() can be found in the Gnu emacs distribution */ |
| 1817 | /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ |
| 1818 | |
| 1819 | void |
| 1820 | my_unexec(void) |
| 1821 | { |
| 1822 | #ifdef UNEXEC |
| 1823 | SV* prog; |
| 1824 | SV* file; |
| 1825 | int status = 1; |
| 1826 | extern int etext; |
| 1827 | |
| 1828 | prog = newSVpv(BIN_EXP, 0); |
| 1829 | sv_catpv(prog, "/perl"); |
| 1830 | file = newSVpv(PL_origfilename, 0); |
| 1831 | sv_catpv(file, ".perldump"); |
| 1832 | |
| 1833 | unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); |
| 1834 | /* unexec prints msg to stderr in case of failure */ |
| 1835 | PerlProc_exit(status); |
| 1836 | #else |
| 1837 | # ifdef VMS |
| 1838 | # include <lib$routines.h> |
| 1839 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ |
| 1840 | # else |
| 1841 | ABORT(); /* for use with undump */ |
| 1842 | # endif |
| 1843 | #endif |
| 1844 | } |
| 1845 | |
| 1846 | /* initialize curinterp */ |
| 1847 | STATIC void |
| 1848 | init_interp(void) |
| 1849 | { |
| 1850 | |
| 1851 | #ifdef PERL_OBJECT /* XXX kludge */ |
| 1852 | #define I_REINIT \ |
| 1853 | STMT_START { \ |
| 1854 | PL_chopset = " \n-"; \ |
| 1855 | PL_copline = NOLINE; \ |
| 1856 | PL_curcop = &PL_compiling;\ |
| 1857 | PL_curcopdb = NULL; \ |
| 1858 | PL_dbargs = 0; \ |
| 1859 | PL_dlmax = 128; \ |
| 1860 | PL_dumpindent = 4; \ |
| 1861 | PL_laststatval = -1; \ |
| 1862 | PL_laststype = OP_STAT; \ |
| 1863 | PL_maxscream = -1; \ |
| 1864 | PL_maxsysfd = MAXSYSFD; \ |
| 1865 | PL_statname = Nullsv; \ |
| 1866 | PL_tmps_floor = -1; \ |
| 1867 | PL_tmps_ix = -1; \ |
| 1868 | PL_op_mask = NULL; \ |
| 1869 | PL_dlmax = 128; \ |
| 1870 | PL_laststatval = -1; \ |
| 1871 | PL_laststype = OP_STAT; \ |
| 1872 | PL_mess_sv = Nullsv; \ |
| 1873 | PL_splitstr = " "; \ |
| 1874 | PL_generation = 100; \ |
| 1875 | PL_exitlist = NULL; \ |
| 1876 | PL_exitlistlen = 0; \ |
| 1877 | PL_regindent = 0; \ |
| 1878 | PL_in_clean_objs = FALSE; \ |
| 1879 | PL_in_clean_all = FALSE; \ |
| 1880 | PL_profiledata = NULL; \ |
| 1881 | PL_rsfp = Nullfp; \ |
| 1882 | PL_rsfp_filters = Nullav; \ |
| 1883 | PL_dirty = FALSE; \ |
| 1884 | } STMT_END |
| 1885 | I_REINIT; |
| 1886 | #else |
| 1887 | # ifdef MULTIPLICITY |
| 1888 | # define PERLVAR(var,type) |
| 1889 | # define PERLVARI(var,type,init) PL_curinterp->var = init; |
| 1890 | # define PERLVARIC(var,type,init) PL_curinterp->var = init; |
| 1891 | # include "intrpvar.h" |
| 1892 | # ifndef USE_THREADS |
| 1893 | # include "thrdvar.h" |
| 1894 | # endif |
| 1895 | # undef PERLVAR |
| 1896 | # undef PERLVARI |
| 1897 | # undef PERLVARIC |
| 1898 | # else |
| 1899 | # define PERLVAR(var,type) |
| 1900 | # define PERLVARI(var,type,init) PL_##var = init; |
| 1901 | # define PERLVARIC(var,type,init) PL_##var = init; |
| 1902 | # include "intrpvar.h" |
| 1903 | # ifndef USE_THREADS |
| 1904 | # include "thrdvar.h" |
| 1905 | # endif |
| 1906 | # undef PERLVAR |
| 1907 | # undef PERLVARI |
| 1908 | # undef PERLVARIC |
| 1909 | # endif |
| 1910 | #endif |
| 1911 | |
| 1912 | } |
| 1913 | |
| 1914 | STATIC void |
| 1915 | init_main_stash(void) |
| 1916 | { |
| 1917 | dTHR; |
| 1918 | GV *gv; |
| 1919 | |
| 1920 | /* Note that strtab is a rather special HV. Assumptions are made |
| 1921 | about not iterating on it, and not adding tie magic to it. |
| 1922 | It is properly deallocated in perl_destruct() */ |
| 1923 | PL_strtab = newHV(); |
| 1924 | #ifdef USE_THREADS |
| 1925 | MUTEX_INIT(&PL_strtab_mutex); |
| 1926 | #endif |
| 1927 | HvSHAREKEYS_off(PL_strtab); /* mandatory */ |
| 1928 | hv_ksplit(PL_strtab, 512); |
| 1929 | |
| 1930 | PL_curstash = PL_defstash = newHV(); |
| 1931 | PL_curstname = newSVpv("main",4); |
| 1932 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
| 1933 | SvREFCNT_dec(GvHV(gv)); |
| 1934 | GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash); |
| 1935 | SvREADONLY_on(gv); |
| 1936 | HvNAME(PL_defstash) = savepv("main"); |
| 1937 | PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
| 1938 | GvMULTI_on(PL_incgv); |
| 1939 | PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */ |
| 1940 | GvMULTI_on(PL_hintgv); |
| 1941 | PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
| 1942 | PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
| 1943 | GvMULTI_on(PL_errgv); |
| 1944 | PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */ |
| 1945 | GvMULTI_on(PL_replgv); |
| 1946 | (void)form("%240s",""); /* Preallocate temp - for immediate signals. */ |
| 1947 | sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ |
| 1948 | sv_setpvn(ERRSV, "", 0); |
| 1949 | PL_curstash = PL_defstash; |
| 1950 | PL_compiling.cop_stash = PL_defstash; |
| 1951 | PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
| 1952 | PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); |
| 1953 | /* We must init $/ before switches are processed. */ |
| 1954 | sv_setpvn(perl_get_sv("/", TRUE), "\n", 1); |
| 1955 | } |
| 1956 | |
| 1957 | STATIC void |
| 1958 | open_script(char *scriptname, bool dosearch, SV *sv, int *fdscript) |
| 1959 | { |
| 1960 | dTHR; |
| 1961 | register char *s; |
| 1962 | |
| 1963 | *fdscript = -1; |
| 1964 | |
| 1965 | if (PL_e_script) { |
| 1966 | PL_origfilename = savepv("-e"); |
| 1967 | } |
| 1968 | else { |
| 1969 | /* if find_script() returns, it returns a malloc()-ed value */ |
| 1970 | PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1); |
| 1971 | |
| 1972 | if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { |
| 1973 | char *s = scriptname + 8; |
| 1974 | *fdscript = atoi(s); |
| 1975 | while (isDIGIT(*s)) |
| 1976 | s++; |
| 1977 | if (*s) { |
| 1978 | scriptname = savepv(s + 1); |
| 1979 | Safefree(PL_origfilename); |
| 1980 | PL_origfilename = scriptname; |
| 1981 | } |
| 1982 | } |
| 1983 | } |
| 1984 | |
| 1985 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
| 1986 | if (strEQ(PL_origfilename,"-")) |
| 1987 | scriptname = ""; |
| 1988 | if (*fdscript >= 0) { |
| 1989 | PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE); |
| 1990 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 1991 | if (PL_rsfp) |
| 1992 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 1993 | #endif |
| 1994 | } |
| 1995 | else if (PL_preprocess) { |
| 1996 | char *cpp_cfg = CPPSTDIN; |
| 1997 | SV *cpp = newSVpv("",0); |
| 1998 | SV *cmd = NEWSV(0,0); |
| 1999 | |
| 2000 | if (strEQ(cpp_cfg, "cppstdin")) |
| 2001 | sv_catpvf(cpp, "%s/", BIN_EXP); |
| 2002 | sv_catpv(cpp, cpp_cfg); |
| 2003 | |
| 2004 | sv_catpv(sv,"-I"); |
| 2005 | sv_catpv(sv,PRIVLIB_EXP); |
| 2006 | |
| 2007 | #ifdef MSDOS |
| 2008 | sv_setpvf(cmd, "\ |
| 2009 | sed %s -e \"/^[^#]/b\" \ |
| 2010 | -e \"/^#[ ]*include[ ]/b\" \ |
| 2011 | -e \"/^#[ ]*define[ ]/b\" \ |
| 2012 | -e \"/^#[ ]*if[ ]/b\" \ |
| 2013 | -e \"/^#[ ]*ifdef[ ]/b\" \ |
| 2014 | -e \"/^#[ ]*ifndef[ ]/b\" \ |
| 2015 | -e \"/^#[ ]*else/b\" \ |
| 2016 | -e \"/^#[ ]*elif[ ]/b\" \ |
| 2017 | -e \"/^#[ ]*undef[ ]/b\" \ |
| 2018 | -e \"/^#[ ]*endif/b\" \ |
| 2019 | -e \"s/^#.*//\" \ |
| 2020 | %s | %_ -C %_ %s", |
| 2021 | (PL_doextract ? "-e \"1,/^#/d\n\"" : ""), |
| 2022 | #else |
| 2023 | # ifdef __OPEN_VM |
| 2024 | sv_setpvf(cmd, "\ |
| 2025 | %s %s -e '/^[^#]/b' \ |
| 2026 | -e '/^#[ ]*include[ ]/b' \ |
| 2027 | -e '/^#[ ]*define[ ]/b' \ |
| 2028 | -e '/^#[ ]*if[ ]/b' \ |
| 2029 | -e '/^#[ ]*ifdef[ ]/b' \ |
| 2030 | -e '/^#[ ]*ifndef[ ]/b' \ |
| 2031 | -e '/^#[ ]*else/b' \ |
| 2032 | -e '/^#[ ]*elif[ ]/b' \ |
| 2033 | -e '/^#[ ]*undef[ ]/b' \ |
| 2034 | -e '/^#[ ]*endif/b' \ |
| 2035 | -e 's/^[ ]*#.*//' \ |
| 2036 | %s | %_ %_ %s", |
| 2037 | # else |
| 2038 | sv_setpvf(cmd, "\ |
| 2039 | %s %s -e '/^[^#]/b' \ |
| 2040 | -e '/^#[ ]*include[ ]/b' \ |
| 2041 | -e '/^#[ ]*define[ ]/b' \ |
| 2042 | -e '/^#[ ]*if[ ]/b' \ |
| 2043 | -e '/^#[ ]*ifdef[ ]/b' \ |
| 2044 | -e '/^#[ ]*ifndef[ ]/b' \ |
| 2045 | -e '/^#[ ]*else/b' \ |
| 2046 | -e '/^#[ ]*elif[ ]/b' \ |
| 2047 | -e '/^#[ ]*undef[ ]/b' \ |
| 2048 | -e '/^#[ ]*endif/b' \ |
| 2049 | -e 's/^[ ]*#.*//' \ |
| 2050 | %s | %_ -C %_ %s", |
| 2051 | # endif |
| 2052 | #ifdef LOC_SED |
| 2053 | LOC_SED, |
| 2054 | #else |
| 2055 | "sed", |
| 2056 | #endif |
| 2057 | (PL_doextract ? "-e '1,/^#/d\n'" : ""), |
| 2058 | #endif |
| 2059 | scriptname, cpp, sv, CPPMINUS); |
| 2060 | PL_doextract = FALSE; |
| 2061 | #ifdef IAMSUID /* actually, this is caught earlier */ |
| 2062 | if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */ |
| 2063 | #ifdef HAS_SETEUID |
| 2064 | (void)seteuid(PL_uid); /* musn't stay setuid root */ |
| 2065 | #else |
| 2066 | #ifdef HAS_SETREUID |
| 2067 | (void)setreuid((Uid_t)-1, PL_uid); |
| 2068 | #else |
| 2069 | #ifdef HAS_SETRESUID |
| 2070 | (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1); |
| 2071 | #else |
| 2072 | PerlProc_setuid(PL_uid); |
| 2073 | #endif |
| 2074 | #endif |
| 2075 | #endif |
| 2076 | if (PerlProc_geteuid() != PL_uid) |
| 2077 | croak("Can't do seteuid!\n"); |
| 2078 | } |
| 2079 | #endif /* IAMSUID */ |
| 2080 | PL_rsfp = PerlProc_popen(SvPVX(cmd), "r"); |
| 2081 | SvREFCNT_dec(cmd); |
| 2082 | SvREFCNT_dec(cpp); |
| 2083 | } |
| 2084 | else if (!*scriptname) { |
| 2085 | forbid_setid("program input from stdin"); |
| 2086 | PL_rsfp = PerlIO_stdin(); |
| 2087 | } |
| 2088 | else { |
| 2089 | PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); |
| 2090 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2091 | if (PL_rsfp) |
| 2092 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 2093 | #endif |
| 2094 | } |
| 2095 | if (!PL_rsfp) { |
| 2096 | #ifdef DOSUID |
| 2097 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
| 2098 | if (PL_euid && |
| 2099 | PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&PL_statbuf) >= 0 && |
| 2100 | PL_statbuf.st_mode & (S_ISUID|S_ISGID)) |
| 2101 | { |
| 2102 | /* try again */ |
| 2103 | PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv); |
| 2104 | croak("Can't do setuid\n"); |
| 2105 | } |
| 2106 | #endif |
| 2107 | #endif |
| 2108 | croak("Can't open perl script \"%s\": %s\n", |
| 2109 | SvPVX(GvSV(PL_curcop->cop_filegv)), Strerror(errno)); |
| 2110 | } |
| 2111 | } |
| 2112 | |
| 2113 | STATIC void |
| 2114 | validate_suid(char *validarg, char *scriptname, int fdscript) |
| 2115 | { |
| 2116 | int which; |
| 2117 | |
| 2118 | /* do we need to emulate setuid on scripts? */ |
| 2119 | |
| 2120 | /* This code is for those BSD systems that have setuid #! scripts disabled |
| 2121 | * in the kernel because of a security problem. Merely defining DOSUID |
| 2122 | * in perl will not fix that problem, but if you have disabled setuid |
| 2123 | * scripts in the kernel, this will attempt to emulate setuid and setgid |
| 2124 | * on scripts that have those now-otherwise-useless bits set. The setuid |
| 2125 | * root version must be called suidperl or sperlN.NNN. If regular perl |
| 2126 | * discovers that it has opened a setuid script, it calls suidperl with |
| 2127 | * the same argv that it had. If suidperl finds that the script it has |
| 2128 | * just opened is NOT setuid root, it sets the effective uid back to the |
| 2129 | * uid. We don't just make perl setuid root because that loses the |
| 2130 | * effective uid we had before invoking perl, if it was different from the |
| 2131 | * uid. |
| 2132 | * |
| 2133 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must |
| 2134 | * be defined in suidperl only. suidperl must be setuid root. The |
| 2135 | * Configure script will set this up for you if you want it. |
| 2136 | */ |
| 2137 | |
| 2138 | #ifdef DOSUID |
| 2139 | dTHR; |
| 2140 | char *s, *s2; |
| 2141 | |
| 2142 | if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ |
| 2143 | croak("Can't stat script \"%s\"",PL_origfilename); |
| 2144 | if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { |
| 2145 | I32 len; |
| 2146 | STRLEN n_a; |
| 2147 | |
| 2148 | #ifdef IAMSUID |
| 2149 | #ifndef HAS_SETREUID |
| 2150 | /* On this access check to make sure the directories are readable, |
| 2151 | * there is actually a small window that the user could use to make |
| 2152 | * filename point to an accessible directory. So there is a faint |
| 2153 | * chance that someone could execute a setuid script down in a |
| 2154 | * non-accessible directory. I don't know what to do about that. |
| 2155 | * But I don't think it's too important. The manual lies when |
| 2156 | * it says access() is useful in setuid programs. |
| 2157 | */ |
| 2158 | if (PerlLIO_access(SvPVX(GvSV(PL_curcop->cop_filegv)),1)) /*double check*/ |
| 2159 | croak("Permission denied"); |
| 2160 | #else |
| 2161 | /* If we can swap euid and uid, then we can determine access rights |
| 2162 | * with a simple stat of the file, and then compare device and |
| 2163 | * inode to make sure we did stat() on the same file we opened. |
| 2164 | * Then we just have to make sure he or she can execute it. |
| 2165 | */ |
| 2166 | { |
| 2167 | struct stat tmpstatbuf; |
| 2168 | |
| 2169 | if ( |
| 2170 | #ifdef HAS_SETREUID |
| 2171 | setreuid(PL_euid,PL_uid) < 0 |
| 2172 | #else |
| 2173 | # if HAS_SETRESUID |
| 2174 | setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0 |
| 2175 | # endif |
| 2176 | #endif |
| 2177 | || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid) |
| 2178 | croak("Can't swap uid and euid"); /* really paranoid */ |
| 2179 | if (PerlLIO_stat(SvPVX(GvSV(PL_curcop->cop_filegv)),&tmpstatbuf) < 0) |
| 2180 | croak("Permission denied"); /* testing full pathname here */ |
| 2181 | if (tmpstatbuf.st_dev != PL_statbuf.st_dev || |
| 2182 | tmpstatbuf.st_ino != PL_statbuf.st_ino) { |
| 2183 | (void)PerlIO_close(PL_rsfp); |
| 2184 | if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */ |
| 2185 | PerlIO_printf(PL_rsfp, |
| 2186 | "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ |
| 2187 | (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n", |
| 2188 | (long)PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, |
| 2189 | (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino, |
| 2190 | SvPVX(GvSV(PL_curcop->cop_filegv)), |
| 2191 | (long)PL_statbuf.st_uid, (long)PL_statbuf.st_gid); |
| 2192 | (void)PerlProc_pclose(PL_rsfp); |
| 2193 | } |
| 2194 | croak("Permission denied\n"); |
| 2195 | } |
| 2196 | if ( |
| 2197 | #ifdef HAS_SETREUID |
| 2198 | setreuid(PL_uid,PL_euid) < 0 |
| 2199 | #else |
| 2200 | # if defined(HAS_SETRESUID) |
| 2201 | setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0 |
| 2202 | # endif |
| 2203 | #endif |
| 2204 | || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid) |
| 2205 | croak("Can't reswap uid and euid"); |
| 2206 | if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ |
| 2207 | croak("Permission denied\n"); |
| 2208 | } |
| 2209 | #endif /* HAS_SETREUID */ |
| 2210 | #endif /* IAMSUID */ |
| 2211 | |
| 2212 | if (!S_ISREG(PL_statbuf.st_mode)) |
| 2213 | croak("Permission denied"); |
| 2214 | if (PL_statbuf.st_mode & S_IWOTH) |
| 2215 | croak("Setuid/gid script is writable by world"); |
| 2216 | PL_doswitches = FALSE; /* -s is insecure in suid */ |
| 2217 | PL_curcop->cop_line++; |
| 2218 | if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch || |
| 2219 | strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */ |
| 2220 | croak("No #! line"); |
| 2221 | s = SvPV(PL_linestr,n_a)+2; |
| 2222 | if (*s == ' ') s++; |
| 2223 | while (!isSPACE(*s)) s++; |
| 2224 | for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 && |
| 2225 | (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; |
| 2226 | if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
| 2227 | croak("Not a perl script"); |
| 2228 | while (*s == ' ' || *s == '\t') s++; |
| 2229 | /* |
| 2230 | * #! arg must be what we saw above. They can invoke it by |
| 2231 | * mentioning suidperl explicitly, but they may not add any strange |
| 2232 | * arguments beyond what #! says if they do invoke suidperl that way. |
| 2233 | */ |
| 2234 | len = strlen(validarg); |
| 2235 | if (strEQ(validarg," PHOOEY ") || |
| 2236 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
| 2237 | croak("Args must match #! line"); |
| 2238 | |
| 2239 | #ifndef IAMSUID |
| 2240 | if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && |
| 2241 | PL_euid == PL_statbuf.st_uid) |
| 2242 | if (!PL_do_undump) |
| 2243 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2244 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2245 | #endif /* IAMSUID */ |
| 2246 | |
| 2247 | if (PL_euid) { /* oops, we're not the setuid root perl */ |
| 2248 | (void)PerlIO_close(PL_rsfp); |
| 2249 | #ifndef IAMSUID |
| 2250 | /* try again */ |
| 2251 | PerlProc_execv(form("%s/sperl%s", BIN_EXP, PL_patchlevel), PL_origargv); |
| 2252 | #endif |
| 2253 | croak("Can't do setuid\n"); |
| 2254 | } |
| 2255 | |
| 2256 | if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { |
| 2257 | #ifdef HAS_SETEGID |
| 2258 | (void)setegid(PL_statbuf.st_gid); |
| 2259 | #else |
| 2260 | #ifdef HAS_SETREGID |
| 2261 | (void)setregid((Gid_t)-1,PL_statbuf.st_gid); |
| 2262 | #else |
| 2263 | #ifdef HAS_SETRESGID |
| 2264 | (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1); |
| 2265 | #else |
| 2266 | PerlProc_setgid(PL_statbuf.st_gid); |
| 2267 | #endif |
| 2268 | #endif |
| 2269 | #endif |
| 2270 | if (PerlProc_getegid() != PL_statbuf.st_gid) |
| 2271 | croak("Can't do setegid!\n"); |
| 2272 | } |
| 2273 | if (PL_statbuf.st_mode & S_ISUID) { |
| 2274 | if (PL_statbuf.st_uid != PL_euid) |
| 2275 | #ifdef HAS_SETEUID |
| 2276 | (void)seteuid(PL_statbuf.st_uid); /* all that for this */ |
| 2277 | #else |
| 2278 | #ifdef HAS_SETREUID |
| 2279 | (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); |
| 2280 | #else |
| 2281 | #ifdef HAS_SETRESUID |
| 2282 | (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1); |
| 2283 | #else |
| 2284 | PerlProc_setuid(PL_statbuf.st_uid); |
| 2285 | #endif |
| 2286 | #endif |
| 2287 | #endif |
| 2288 | if (PerlProc_geteuid() != PL_statbuf.st_uid) |
| 2289 | croak("Can't do seteuid!\n"); |
| 2290 | } |
| 2291 | else if (PL_uid) { /* oops, mustn't run as root */ |
| 2292 | #ifdef HAS_SETEUID |
| 2293 | (void)seteuid((Uid_t)PL_uid); |
| 2294 | #else |
| 2295 | #ifdef HAS_SETREUID |
| 2296 | (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); |
| 2297 | #else |
| 2298 | #ifdef HAS_SETRESUID |
| 2299 | (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1); |
| 2300 | #else |
| 2301 | PerlProc_setuid((Uid_t)PL_uid); |
| 2302 | #endif |
| 2303 | #endif |
| 2304 | #endif |
| 2305 | if (PerlProc_geteuid() != PL_uid) |
| 2306 | croak("Can't do seteuid!\n"); |
| 2307 | } |
| 2308 | init_ids(); |
| 2309 | if (!cando(S_IXUSR,TRUE,&PL_statbuf)) |
| 2310 | croak("Permission denied\n"); /* they can't do this */ |
| 2311 | } |
| 2312 | #ifdef IAMSUID |
| 2313 | else if (PL_preprocess) |
| 2314 | croak("-P not allowed for setuid/setgid script\n"); |
| 2315 | else if (fdscript >= 0) |
| 2316 | croak("fd script not allowed in suidperl\n"); |
| 2317 | else |
| 2318 | croak("Script is not setuid/setgid in suidperl\n"); |
| 2319 | |
| 2320 | /* We absolutely must clear out any saved ids here, so we */ |
| 2321 | /* exec the real perl, substituting fd script for scriptname. */ |
| 2322 | /* (We pass script name as "subdir" of fd, which perl will grok.) */ |
| 2323 | PerlIO_rewind(PL_rsfp); |
| 2324 | PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ |
| 2325 | for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; |
| 2326 | if (!PL_origargv[which]) |
| 2327 | croak("Permission denied"); |
| 2328 | PL_origargv[which] = savepv(form("/dev/fd/%d/%s", |
| 2329 | PerlIO_fileno(PL_rsfp), PL_origargv[which])); |
| 2330 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2331 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
| 2332 | #endif |
| 2333 | PerlProc_execv(form("%s/perl%s", BIN_EXP, PL_patchlevel), PL_origargv);/* try again */ |
| 2334 | croak("Can't do setuid\n"); |
| 2335 | #endif /* IAMSUID */ |
| 2336 | #else /* !DOSUID */ |
| 2337 | if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ |
| 2338 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 2339 | dTHR; |
| 2340 | PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */ |
| 2341 | if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID) |
| 2342 | || |
| 2343 | (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) |
| 2344 | ) |
| 2345 | if (!PL_do_undump) |
| 2346 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2347 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2348 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 2349 | /* not set-id, must be wrapped */ |
| 2350 | } |
| 2351 | #endif /* DOSUID */ |
| 2352 | } |
| 2353 | |
| 2354 | STATIC void |
| 2355 | find_beginning(void) |
| 2356 | { |
| 2357 | register char *s, *s2; |
| 2358 | |
| 2359 | /* skip forward in input to the real script? */ |
| 2360 | |
| 2361 | forbid_setid("-x"); |
| 2362 | while (PL_doextract) { |
| 2363 | if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) |
| 2364 | croak("No Perl script found in input\n"); |
| 2365 | if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { |
| 2366 | PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */ |
| 2367 | PL_doextract = FALSE; |
| 2368 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
| 2369 | s2 = s; |
| 2370 | while (*s == ' ' || *s == '\t') s++; |
| 2371 | if (*s++ == '-') { |
| 2372 | while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; |
| 2373 | if (strnEQ(s2-4,"perl",4)) |
| 2374 | /*SUPPRESS 530*/ |
| 2375 | while (s = moreswitches(s)) ; |
| 2376 | } |
| 2377 | if (PL_cddir && PerlDir_chdir(PL_cddir) < 0) |
| 2378 | croak("Can't chdir to %s",PL_cddir); |
| 2379 | } |
| 2380 | } |
| 2381 | } |
| 2382 | |
| 2383 | |
| 2384 | STATIC void |
| 2385 | init_ids(void) |
| 2386 | { |
| 2387 | PL_uid = (int)PerlProc_getuid(); |
| 2388 | PL_euid = (int)PerlProc_geteuid(); |
| 2389 | PL_gid = (int)PerlProc_getgid(); |
| 2390 | PL_egid = (int)PerlProc_getegid(); |
| 2391 | #ifdef VMS |
| 2392 | PL_uid |= PL_gid << 16; |
| 2393 | PL_euid |= PL_egid << 16; |
| 2394 | #endif |
| 2395 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 2396 | } |
| 2397 | |
| 2398 | STATIC void |
| 2399 | forbid_setid(char *s) |
| 2400 | { |
| 2401 | if (PL_euid != PL_uid) |
| 2402 | croak("No %s allowed while running setuid", s); |
| 2403 | if (PL_egid != PL_gid) |
| 2404 | croak("No %s allowed while running setgid", s); |
| 2405 | } |
| 2406 | |
| 2407 | STATIC void |
| 2408 | init_debugger(void) |
| 2409 | { |
| 2410 | dTHR; |
| 2411 | PL_curstash = PL_debstash; |
| 2412 | PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
| 2413 | AvREAL_off(PL_dbargs); |
| 2414 | PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
| 2415 | PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); |
| 2416 | PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
| 2417 | PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); |
| 2418 | sv_setiv(PL_DBsingle, 0); |
| 2419 | PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); |
| 2420 | sv_setiv(PL_DBtrace, 0); |
| 2421 | PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); |
| 2422 | sv_setiv(PL_DBsignal, 0); |
| 2423 | PL_curstash = PL_defstash; |
| 2424 | } |
| 2425 | |
| 2426 | #ifndef STRESS_REALLOC |
| 2427 | #define REASONABLE(size) (size) |
| 2428 | #else |
| 2429 | #define REASONABLE(size) (1) /* unreasonable */ |
| 2430 | #endif |
| 2431 | |
| 2432 | void |
| 2433 | init_stacks(ARGSproto) |
| 2434 | { |
| 2435 | /* start with 128-item stack and 8K cxstack */ |
| 2436 | PL_curstackinfo = new_stackinfo(REASONABLE(128), |
| 2437 | REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); |
| 2438 | PL_curstackinfo->si_type = PERLSI_MAIN; |
| 2439 | PL_curstack = PL_curstackinfo->si_stack; |
| 2440 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
| 2441 | |
| 2442 | PL_stack_base = AvARRAY(PL_curstack); |
| 2443 | PL_stack_sp = PL_stack_base; |
| 2444 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
| 2445 | |
| 2446 | New(50,PL_tmps_stack,REASONABLE(128),SV*); |
| 2447 | PL_tmps_floor = -1; |
| 2448 | PL_tmps_ix = -1; |
| 2449 | PL_tmps_max = REASONABLE(128); |
| 2450 | |
| 2451 | New(54,PL_markstack,REASONABLE(32),I32); |
| 2452 | PL_markstack_ptr = PL_markstack; |
| 2453 | PL_markstack_max = PL_markstack + REASONABLE(32); |
| 2454 | |
| 2455 | SET_MARKBASE; |
| 2456 | |
| 2457 | New(54,PL_scopestack,REASONABLE(32),I32); |
| 2458 | PL_scopestack_ix = 0; |
| 2459 | PL_scopestack_max = REASONABLE(32); |
| 2460 | |
| 2461 | New(54,PL_savestack,REASONABLE(128),ANY); |
| 2462 | PL_savestack_ix = 0; |
| 2463 | PL_savestack_max = REASONABLE(128); |
| 2464 | |
| 2465 | New(54,PL_retstack,REASONABLE(16),OP*); |
| 2466 | PL_retstack_ix = 0; |
| 2467 | PL_retstack_max = REASONABLE(16); |
| 2468 | } |
| 2469 | |
| 2470 | #undef REASONABLE |
| 2471 | |
| 2472 | STATIC void |
| 2473 | nuke_stacks(void) |
| 2474 | { |
| 2475 | dTHR; |
| 2476 | while (PL_curstackinfo->si_next) |
| 2477 | PL_curstackinfo = PL_curstackinfo->si_next; |
| 2478 | while (PL_curstackinfo) { |
| 2479 | PERL_SI *p = PL_curstackinfo->si_prev; |
| 2480 | /* curstackinfo->si_stack got nuked by sv_free_arenas() */ |
| 2481 | Safefree(PL_curstackinfo->si_cxstack); |
| 2482 | Safefree(PL_curstackinfo); |
| 2483 | PL_curstackinfo = p; |
| 2484 | } |
| 2485 | Safefree(PL_tmps_stack); |
| 2486 | Safefree(PL_markstack); |
| 2487 | Safefree(PL_scopestack); |
| 2488 | Safefree(PL_savestack); |
| 2489 | Safefree(PL_retstack); |
| 2490 | DEBUG( { |
| 2491 | Safefree(PL_debname); |
| 2492 | Safefree(PL_debdelim); |
| 2493 | } ) |
| 2494 | } |
| 2495 | |
| 2496 | #ifndef PERL_OBJECT |
| 2497 | static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
| 2498 | #endif |
| 2499 | |
| 2500 | STATIC void |
| 2501 | init_lexer(void) |
| 2502 | { |
| 2503 | #ifdef PERL_OBJECT |
| 2504 | PerlIO *tmpfp; |
| 2505 | #endif |
| 2506 | tmpfp = PL_rsfp; |
| 2507 | PL_rsfp = Nullfp; |
| 2508 | lex_start(PL_linestr); |
| 2509 | PL_rsfp = tmpfp; |
| 2510 | PL_subname = newSVpv("main",4); |
| 2511 | } |
| 2512 | |
| 2513 | STATIC void |
| 2514 | init_predump_symbols(void) |
| 2515 | { |
| 2516 | dTHR; |
| 2517 | GV *tmpgv; |
| 2518 | GV *othergv; |
| 2519 | |
| 2520 | sv_setpvn(perl_get_sv("\"", TRUE), " ", 1); |
| 2521 | PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
| 2522 | GvMULTI_on(PL_stdingv); |
| 2523 | IoIFP(GvIOp(PL_stdingv)) = PerlIO_stdin(); |
| 2524 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
| 2525 | GvMULTI_on(tmpgv); |
| 2526 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_stdingv)); |
| 2527 | |
| 2528 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
| 2529 | GvMULTI_on(tmpgv); |
| 2530 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout(); |
| 2531 | setdefout(tmpgv); |
| 2532 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
| 2533 | GvMULTI_on(tmpgv); |
| 2534 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(PL_defoutgv)); |
| 2535 | |
| 2536 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
| 2537 | GvMULTI_on(othergv); |
| 2538 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr(); |
| 2539 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
| 2540 | GvMULTI_on(tmpgv); |
| 2541 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
| 2542 | |
| 2543 | PL_statname = NEWSV(66,0); /* last filename we did stat on */ |
| 2544 | |
| 2545 | if (!PL_osname) |
| 2546 | PL_osname = savepv(OSNAME); |
| 2547 | } |
| 2548 | |
| 2549 | STATIC void |
| 2550 | init_postdump_symbols(register int argc, register char **argv, register char **env) |
| 2551 | { |
| 2552 | dTHR; |
| 2553 | char *s; |
| 2554 | SV *sv; |
| 2555 | GV* tmpgv; |
| 2556 | |
| 2557 | argc--,argv++; /* skip name of script */ |
| 2558 | if (PL_doswitches) { |
| 2559 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| 2560 | if (!argv[0][1]) |
| 2561 | break; |
| 2562 | if (argv[0][1] == '-') { |
| 2563 | argc--,argv++; |
| 2564 | break; |
| 2565 | } |
| 2566 | if (s = strchr(argv[0], '=')) { |
| 2567 | *s++ = '\0'; |
| 2568 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
| 2569 | } |
| 2570 | else |
| 2571 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
| 2572 | } |
| 2573 | } |
| 2574 | PL_toptarget = NEWSV(0,0); |
| 2575 | sv_upgrade(PL_toptarget, SVt_PVFM); |
| 2576 | sv_setpvn(PL_toptarget, "", 0); |
| 2577 | PL_bodytarget = NEWSV(0,0); |
| 2578 | sv_upgrade(PL_bodytarget, SVt_PVFM); |
| 2579 | sv_setpvn(PL_bodytarget, "", 0); |
| 2580 | PL_formtarget = PL_bodytarget; |
| 2581 | |
| 2582 | TAINT; |
| 2583 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
| 2584 | sv_setpv(GvSV(tmpgv),PL_origfilename); |
| 2585 | magicname("0", "0", 1); |
| 2586 | } |
| 2587 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
| 2588 | sv_setpv(GvSV(tmpgv),PL_origargv[0]); |
| 2589 | if (PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
| 2590 | GvMULTI_on(PL_argvgv); |
| 2591 | (void)gv_AVadd(PL_argvgv); |
| 2592 | av_clear(GvAVn(PL_argvgv)); |
| 2593 | for (; argc > 0; argc--,argv++) { |
| 2594 | av_push(GvAVn(PL_argvgv),newSVpv(argv[0],0)); |
| 2595 | } |
| 2596 | } |
| 2597 | if (PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
| 2598 | HV *hv; |
| 2599 | GvMULTI_on(PL_envgv); |
| 2600 | hv = GvHVn(PL_envgv); |
| 2601 | hv_magic(hv, PL_envgv, 'E'); |
| 2602 | #ifndef VMS /* VMS doesn't have environ array */ |
| 2603 | /* Note that if the supplied env parameter is actually a copy |
| 2604 | of the global environ then it may now point to free'd memory |
| 2605 | if the environment has been modified since. To avoid this |
| 2606 | problem we treat env==NULL as meaning 'use the default' |
| 2607 | */ |
| 2608 | if (!env) |
| 2609 | env = environ; |
| 2610 | if (env != environ) |
| 2611 | environ[0] = Nullch; |
| 2612 | for (; *env; env++) { |
| 2613 | if (!(s = strchr(*env,'='))) |
| 2614 | continue; |
| 2615 | *s++ = '\0'; |
| 2616 | #if defined(MSDOS) |
| 2617 | (void)strupr(*env); |
| 2618 | #endif |
| 2619 | sv = newSVpv(s--,0); |
| 2620 | (void)hv_store(hv, *env, s - *env, sv, 0); |
| 2621 | *s = '='; |
| 2622 | #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV) |
| 2623 | /* Sins of the RTL. See note in my_setenv(). */ |
| 2624 | (void)PerlEnv_putenv(savepv(*env)); |
| 2625 | #endif |
| 2626 | } |
| 2627 | #endif |
| 2628 | #ifdef DYNAMIC_ENV_FETCH |
| 2629 | HvNAME(hv) = savepv(ENV_HV_NAME); |
| 2630 | #endif |
| 2631 | } |
| 2632 | TAINT_NOT; |
| 2633 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
| 2634 | sv_setiv(GvSV(tmpgv), (IV)getpid()); |
| 2635 | } |
| 2636 | |
| 2637 | STATIC void |
| 2638 | init_perllib(void) |
| 2639 | { |
| 2640 | char *s; |
| 2641 | if (!PL_tainting) { |
| 2642 | #ifndef VMS |
| 2643 | s = PerlEnv_getenv("PERL5LIB"); |
| 2644 | if (s) |
| 2645 | incpush(s, TRUE); |
| 2646 | else |
| 2647 | incpush(PerlEnv_getenv("PERLLIB"), FALSE); |
| 2648 | #else /* VMS */ |
| 2649 | /* Treat PERL5?LIB as a possible search list logical name -- the |
| 2650 | * "natural" VMS idiom for a Unix path string. We allow each |
| 2651 | * element to be a set of |-separated directories for compatibility. |
| 2652 | */ |
| 2653 | char buf[256]; |
| 2654 | int idx = 0; |
| 2655 | if (my_trnlnm("PERL5LIB",buf,0)) |
| 2656 | do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); |
| 2657 | else |
| 2658 | while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE); |
| 2659 | #endif /* VMS */ |
| 2660 | } |
| 2661 | |
| 2662 | /* Use the ~-expanded versions of APPLLIB (undocumented), |
| 2663 | ARCHLIB PRIVLIB SITEARCH and SITELIB |
| 2664 | */ |
| 2665 | #ifdef APPLLIB_EXP |
| 2666 | incpush(APPLLIB_EXP, TRUE); |
| 2667 | #endif |
| 2668 | |
| 2669 | #ifdef ARCHLIB_EXP |
| 2670 | incpush(ARCHLIB_EXP, FALSE); |
| 2671 | #endif |
| 2672 | #ifndef PRIVLIB_EXP |
| 2673 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" |
| 2674 | #endif |
| 2675 | #if defined(WIN32) |
| 2676 | incpush(PRIVLIB_EXP, TRUE); |
| 2677 | #else |
| 2678 | incpush(PRIVLIB_EXP, FALSE); |
| 2679 | #endif |
| 2680 | |
| 2681 | #ifdef SITEARCH_EXP |
| 2682 | incpush(SITEARCH_EXP, FALSE); |
| 2683 | #endif |
| 2684 | #ifdef SITELIB_EXP |
| 2685 | #if defined(WIN32) |
| 2686 | incpush(SITELIB_EXP, TRUE); |
| 2687 | #else |
| 2688 | incpush(SITELIB_EXP, FALSE); |
| 2689 | #endif |
| 2690 | #endif |
| 2691 | if (!PL_tainting) |
| 2692 | incpush(".", FALSE); |
| 2693 | } |
| 2694 | |
| 2695 | #if defined(DOSISH) |
| 2696 | # define PERLLIB_SEP ';' |
| 2697 | #else |
| 2698 | # if defined(VMS) |
| 2699 | # define PERLLIB_SEP '|' |
| 2700 | # else |
| 2701 | # define PERLLIB_SEP ':' |
| 2702 | # endif |
| 2703 | #endif |
| 2704 | #ifndef PERLLIB_MANGLE |
| 2705 | # define PERLLIB_MANGLE(s,n) (s) |
| 2706 | #endif |
| 2707 | |
| 2708 | STATIC void |
| 2709 | incpush(char *p, int addsubdirs) |
| 2710 | { |
| 2711 | SV *subdir = Nullsv; |
| 2712 | |
| 2713 | if (!p) |
| 2714 | return; |
| 2715 | |
| 2716 | if (addsubdirs) { |
| 2717 | subdir = sv_newmortal(); |
| 2718 | if (!PL_archpat_auto) { |
| 2719 | STRLEN len = (sizeof(ARCHNAME) + strlen(PL_patchlevel) |
| 2720 | + sizeof("//auto")); |
| 2721 | New(55, PL_archpat_auto, len, char); |
| 2722 | sprintf(PL_archpat_auto, "/%s/%s/auto", ARCHNAME, PL_patchlevel); |
| 2723 | #ifdef VMS |
| 2724 | for (len = sizeof(ARCHNAME) + 2; |
| 2725 | PL_archpat_auto[len] != '\0' && PL_archpat_auto[len] != '/'; len++) |
| 2726 | if (PL_archpat_auto[len] == '.') PL_archpat_auto[len] = '_'; |
| 2727 | #endif |
| 2728 | } |
| 2729 | } |
| 2730 | |
| 2731 | /* Break at all separators */ |
| 2732 | while (p && *p) { |
| 2733 | SV *libdir = NEWSV(55,0); |
| 2734 | char *s; |
| 2735 | |
| 2736 | /* skip any consecutive separators */ |
| 2737 | while ( *p == PERLLIB_SEP ) { |
| 2738 | /* Uncomment the next line for PATH semantics */ |
| 2739 | /* av_push(GvAVn(PL_incgv), newSVpv(".", 1)); */ |
| 2740 | p++; |
| 2741 | } |
| 2742 | |
| 2743 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
| 2744 | sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), |
| 2745 | (STRLEN)(s - p)); |
| 2746 | p = s + 1; |
| 2747 | } |
| 2748 | else { |
| 2749 | sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); |
| 2750 | p = Nullch; /* break out */ |
| 2751 | } |
| 2752 | |
| 2753 | /* |
| 2754 | * BEFORE pushing libdir onto @INC we may first push version- and |
| 2755 | * archname-specific sub-directories. |
| 2756 | */ |
| 2757 | if (addsubdirs) { |
| 2758 | struct stat tmpstatbuf; |
| 2759 | #ifdef VMS |
| 2760 | char *unix; |
| 2761 | STRLEN len; |
| 2762 | |
| 2763 | if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) { |
| 2764 | len = strlen(unix); |
| 2765 | while (unix[len-1] == '/') len--; /* Cosmetic */ |
| 2766 | sv_usepvn(libdir,unix,len); |
| 2767 | } |
| 2768 | else |
| 2769 | PerlIO_printf(PerlIO_stderr(), |
| 2770 | "Failed to unixify @INC element \"%s\"\n", |
| 2771 | SvPV(libdir,len)); |
| 2772 | #endif |
| 2773 | /* .../archname/version if -d .../archname/version/auto */ |
| 2774 | sv_setsv(subdir, libdir); |
| 2775 | sv_catpv(subdir, PL_archpat_auto); |
| 2776 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 2777 | S_ISDIR(tmpstatbuf.st_mode)) |
| 2778 | av_push(GvAVn(PL_incgv), |
| 2779 | newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); |
| 2780 | |
| 2781 | /* .../archname if -d .../archname/auto */ |
| 2782 | sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME), |
| 2783 | strlen(PL_patchlevel) + 1, "", 0); |
| 2784 | if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 2785 | S_ISDIR(tmpstatbuf.st_mode)) |
| 2786 | av_push(GvAVn(PL_incgv), |
| 2787 | newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); |
| 2788 | } |
| 2789 | |
| 2790 | /* finally push this lib directory on the end of @INC */ |
| 2791 | av_push(GvAVn(PL_incgv), libdir); |
| 2792 | } |
| 2793 | } |
| 2794 | |
| 2795 | #ifdef USE_THREADS |
| 2796 | STATIC struct perl_thread * |
| 2797 | init_main_thread() |
| 2798 | { |
| 2799 | struct perl_thread *thr; |
| 2800 | XPV *xpv; |
| 2801 | |
| 2802 | Newz(53, thr, 1, struct perl_thread); |
| 2803 | PL_curcop = &PL_compiling; |
| 2804 | thr->cvcache = newHV(); |
| 2805 | thr->threadsv = newAV(); |
| 2806 | /* thr->threadsvp is set when find_threadsv is called */ |
| 2807 | thr->specific = newAV(); |
| 2808 | thr->errhv = newHV(); |
| 2809 | thr->flags = THRf_R_JOINABLE; |
| 2810 | MUTEX_INIT(&thr->mutex); |
| 2811 | /* Handcraft thrsv similarly to mess_sv */ |
| 2812 | New(53, PL_thrsv, 1, SV); |
| 2813 | Newz(53, xpv, 1, XPV); |
| 2814 | SvFLAGS(PL_thrsv) = SVt_PV; |
| 2815 | SvANY(PL_thrsv) = (void*)xpv; |
| 2816 | SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */ |
| 2817 | SvPVX(PL_thrsv) = (char*)thr; |
| 2818 | SvCUR_set(PL_thrsv, sizeof(thr)); |
| 2819 | SvLEN_set(PL_thrsv, sizeof(thr)); |
| 2820 | *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */ |
| 2821 | thr->oursv = PL_thrsv; |
| 2822 | PL_chopset = " \n-"; |
| 2823 | PL_dumpindent = 4; |
| 2824 | |
| 2825 | MUTEX_LOCK(&PL_threads_mutex); |
| 2826 | PL_nthreads++; |
| 2827 | thr->tid = 0; |
| 2828 | thr->next = thr; |
| 2829 | thr->prev = thr; |
| 2830 | MUTEX_UNLOCK(&PL_threads_mutex); |
| 2831 | |
| 2832 | #ifdef HAVE_THREAD_INTERN |
| 2833 | init_thread_intern(thr); |
| 2834 | #endif |
| 2835 | |
| 2836 | #ifdef SET_THREAD_SELF |
| 2837 | SET_THREAD_SELF(thr); |
| 2838 | #else |
| 2839 | thr->self = pthread_self(); |
| 2840 | #endif /* SET_THREAD_SELF */ |
| 2841 | SET_THR(thr); |
| 2842 | |
| 2843 | /* |
| 2844 | * These must come after the SET_THR because sv_setpvn does |
| 2845 | * SvTAINT and the taint fields require dTHR. |
| 2846 | */ |
| 2847 | PL_toptarget = NEWSV(0,0); |
| 2848 | sv_upgrade(PL_toptarget, SVt_PVFM); |
| 2849 | sv_setpvn(PL_toptarget, "", 0); |
| 2850 | PL_bodytarget = NEWSV(0,0); |
| 2851 | sv_upgrade(PL_bodytarget, SVt_PVFM); |
| 2852 | sv_setpvn(PL_bodytarget, "", 0); |
| 2853 | PL_formtarget = PL_bodytarget; |
| 2854 | thr->errsv = newSVpv("", 0); |
| 2855 | (void) find_threadsv("@"); /* Ensure $@ is initialised early */ |
| 2856 | |
| 2857 | PL_maxscream = -1; |
| 2858 | PL_regcompp = FUNC_NAME_TO_PTR(pregcomp); |
| 2859 | PL_regexecp = FUNC_NAME_TO_PTR(regexec_flags); |
| 2860 | PL_regindent = 0; |
| 2861 | PL_reginterp_cnt = 0; |
| 2862 | |
| 2863 | return thr; |
| 2864 | } |
| 2865 | #endif /* USE_THREADS */ |
| 2866 | |
| 2867 | void |
| 2868 | call_list(I32 oldscope, AV *paramList) |
| 2869 | { |
| 2870 | dTHR; |
| 2871 | line_t oldline = PL_curcop->cop_line; |
| 2872 | STRLEN len; |
| 2873 | dJMPENV; |
| 2874 | int ret; |
| 2875 | |
| 2876 | while (AvFILL(paramList) >= 0) { |
| 2877 | CV *cv = (CV*)av_shift(paramList); |
| 2878 | |
| 2879 | SAVEFREESV(cv); |
| 2880 | |
| 2881 | JMPENV_PUSH(ret); |
| 2882 | switch (ret) { |
| 2883 | case 0: { |
| 2884 | SV* atsv = ERRSV; |
| 2885 | PUSHMARK(PL_stack_sp); |
| 2886 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); |
| 2887 | (void)SvPV(atsv, len); |
| 2888 | if (len) { |
| 2889 | JMPENV_POP; |
| 2890 | PL_curcop = &PL_compiling; |
| 2891 | PL_curcop->cop_line = oldline; |
| 2892 | if (paramList == PL_beginav) |
| 2893 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); |
| 2894 | else |
| 2895 | sv_catpv(atsv, "END failed--cleanup aborted"); |
| 2896 | while (PL_scopestack_ix > oldscope) |
| 2897 | LEAVE; |
| 2898 | croak("%s", SvPVX(atsv)); |
| 2899 | } |
| 2900 | } |
| 2901 | break; |
| 2902 | case 1: |
| 2903 | STATUS_ALL_FAILURE; |
| 2904 | /* FALL THROUGH */ |
| 2905 | case 2: |
| 2906 | /* my_exit() was called */ |
| 2907 | while (PL_scopestack_ix > oldscope) |
| 2908 | LEAVE; |
| 2909 | FREETMPS; |
| 2910 | PL_curstash = PL_defstash; |
| 2911 | if (PL_endav) |
| 2912 | call_list(oldscope, PL_endav); |
| 2913 | JMPENV_POP; |
| 2914 | PL_curcop = &PL_compiling; |
| 2915 | PL_curcop->cop_line = oldline; |
| 2916 | if (PL_statusvalue) { |
| 2917 | if (paramList == PL_beginav) |
| 2918 | croak("BEGIN failed--compilation aborted"); |
| 2919 | else |
| 2920 | croak("END failed--cleanup aborted"); |
| 2921 | } |
| 2922 | my_exit_jump(); |
| 2923 | /* NOTREACHED */ |
| 2924 | case 3: |
| 2925 | if (!PL_restartop) { |
| 2926 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
| 2927 | FREETMPS; |
| 2928 | break; |
| 2929 | } |
| 2930 | JMPENV_POP; |
| 2931 | PL_curcop = &PL_compiling; |
| 2932 | PL_curcop->cop_line = oldline; |
| 2933 | JMPENV_JUMP(3); |
| 2934 | } |
| 2935 | JMPENV_POP; |
| 2936 | } |
| 2937 | } |
| 2938 | |
| 2939 | void |
| 2940 | my_exit(U32 status) |
| 2941 | { |
| 2942 | dTHR; |
| 2943 | |
| 2944 | DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", |
| 2945 | thr, (unsigned long) status)); |
| 2946 | switch (status) { |
| 2947 | case 0: |
| 2948 | STATUS_ALL_SUCCESS; |
| 2949 | break; |
| 2950 | case 1: |
| 2951 | STATUS_ALL_FAILURE; |
| 2952 | break; |
| 2953 | default: |
| 2954 | STATUS_NATIVE_SET(status); |
| 2955 | break; |
| 2956 | } |
| 2957 | my_exit_jump(); |
| 2958 | } |
| 2959 | |
| 2960 | void |
| 2961 | my_failure_exit(void) |
| 2962 | { |
| 2963 | #ifdef VMS |
| 2964 | if (vaxc$errno & 1) { |
| 2965 | if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ |
| 2966 | STATUS_NATIVE_SET(44); |
| 2967 | } |
| 2968 | else { |
| 2969 | if (!vaxc$errno && errno) /* unlikely */ |
| 2970 | STATUS_NATIVE_SET(44); |
| 2971 | else |
| 2972 | STATUS_NATIVE_SET(vaxc$errno); |
| 2973 | } |
| 2974 | #else |
| 2975 | int exitstatus; |
| 2976 | if (errno & 255) |
| 2977 | STATUS_POSIX_SET(errno); |
| 2978 | else { |
| 2979 | exitstatus = STATUS_POSIX >> 8; |
| 2980 | if (exitstatus & 255) |
| 2981 | STATUS_POSIX_SET(exitstatus); |
| 2982 | else |
| 2983 | STATUS_POSIX_SET(255); |
| 2984 | } |
| 2985 | #endif |
| 2986 | my_exit_jump(); |
| 2987 | } |
| 2988 | |
| 2989 | STATIC void |
| 2990 | my_exit_jump(void) |
| 2991 | { |
| 2992 | dTHR; |
| 2993 | register PERL_CONTEXT *cx; |
| 2994 | I32 gimme; |
| 2995 | SV **newsp; |
| 2996 | |
| 2997 | if (PL_e_script) { |
| 2998 | SvREFCNT_dec(PL_e_script); |
| 2999 | PL_e_script = Nullsv; |
| 3000 | } |
| 3001 | |
| 3002 | POPSTACK_TO(PL_mainstack); |
| 3003 | if (cxstack_ix >= 0) { |
| 3004 | if (cxstack_ix > 0) |
| 3005 | dounwind(0); |
| 3006 | POPBLOCK(cx,PL_curpm); |
| 3007 | LEAVE; |
| 3008 | } |
| 3009 | |
| 3010 | JMPENV_JUMP(2); |
| 3011 | } |
| 3012 | |
| 3013 | #ifdef PERL_OBJECT |
| 3014 | #define NO_XSLOCKS |
| 3015 | #endif /* PERL_OBJECT */ |
| 3016 | |
| 3017 | #include "XSUB.h" |
| 3018 | |
| 3019 | static I32 |
| 3020 | #ifdef PERL_OBJECT |
| 3021 | read_e_script(CPerlObj *pPerl, int idx, SV *buf_sv, int maxlen) |
| 3022 | #else |
| 3023 | read_e_script(int idx, SV *buf_sv, int maxlen) |
| 3024 | #endif |
| 3025 | { |
| 3026 | char *p, *nl; |
| 3027 | p = SvPVX(PL_e_script); |
| 3028 | nl = strchr(p, '\n'); |
| 3029 | nl = (nl) ? nl+1 : SvEND(PL_e_script); |
| 3030 | if (nl-p == 0) { |
| 3031 | filter_del(read_e_script); |
| 3032 | return 0; |
| 3033 | } |
| 3034 | sv_catpvn(buf_sv, p, nl-p); |
| 3035 | sv_chop(PL_e_script, nl); |
| 3036 | return 1; |
| 3037 | } |
| 3038 | |
| 3039 | |