| 1 | /* perl.c |
| 2 | * |
| 3 | * Copyright (c) 1987-1997 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 | dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n"; |
| 28 | |
| 29 | #ifdef IAMSUID |
| 30 | #ifndef DOSUID |
| 31 | #define DOSUID |
| 32 | #endif |
| 33 | #endif |
| 34 | |
| 35 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 36 | #ifdef DOSUID |
| 37 | #undef DOSUID |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | #define I_REINIT \ |
| 42 | STMT_START { \ |
| 43 | chopset = " \n-"; \ |
| 44 | copline = NOLINE; \ |
| 45 | curcop = &compiling; \ |
| 46 | curcopdb = NULL; \ |
| 47 | cxstack_ix = -1; \ |
| 48 | cxstack_max = 128; \ |
| 49 | dbargs = 0; \ |
| 50 | dlmax = 128; \ |
| 51 | laststatval = -1; \ |
| 52 | laststype = OP_STAT; \ |
| 53 | maxscream = -1; \ |
| 54 | maxsysfd = MAXSYSFD; \ |
| 55 | statname = Nullsv; \ |
| 56 | tmps_floor = -1; \ |
| 57 | tmps_ix = -1; \ |
| 58 | op_mask = NULL; \ |
| 59 | dlmax = 128; \ |
| 60 | laststatval = -1; \ |
| 61 | laststype = OP_STAT; \ |
| 62 | mess_sv = Nullsv; \ |
| 63 | } STMT_END |
| 64 | |
| 65 | static void find_beginning _((void)); |
| 66 | static void forbid_setid _((char *)); |
| 67 | static void incpush _((char *, int)); |
| 68 | static void init_ids _((void)); |
| 69 | static void init_debugger _((void)); |
| 70 | static void init_lexer _((void)); |
| 71 | static void init_main_stash _((void)); |
| 72 | #ifdef USE_THREADS |
| 73 | static struct perl_thread * init_main_thread _((void)); |
| 74 | #endif /* USE_THREADS */ |
| 75 | static void init_perllib _((void)); |
| 76 | static void init_postdump_symbols _((int, char **, char **)); |
| 77 | static void init_predump_symbols _((void)); |
| 78 | static void my_exit_jump _((void)) __attribute__((noreturn)); |
| 79 | static void nuke_stacks _((void)); |
| 80 | static void open_script _((char *, bool, SV *)); |
| 81 | static void usage _((char *)); |
| 82 | static void validate_suid _((char *, char*)); |
| 83 | |
| 84 | static int fdscript = -1; |
| 85 | |
| 86 | #if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__) |
| 87 | #include <asm/sigcontext.h> |
| 88 | static void |
| 89 | catch_sigsegv(int signo, struct sigcontext_struct sc) |
| 90 | { |
| 91 | PerlProc_signal(SIGSEGV, SIG_DFL); |
| 92 | fprintf(stderr, "Segmentation fault dereferencing 0x%lx\n" |
| 93 | "return_address = 0x%lx, eip = 0x%lx\n", |
| 94 | sc.cr2, __builtin_return_address(0), sc.eip); |
| 95 | fprintf(stderr, "thread = 0x%lx\n", (unsigned long)THR); |
| 96 | } |
| 97 | #endif |
| 98 | |
| 99 | PerlInterpreter * |
| 100 | perl_alloc(void) |
| 101 | { |
| 102 | PerlInterpreter *sv_interp; |
| 103 | |
| 104 | curinterp = 0; |
| 105 | New(53, sv_interp, 1, PerlInterpreter); |
| 106 | return sv_interp; |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | perl_construct(register PerlInterpreter *sv_interp) |
| 111 | { |
| 112 | #ifdef USE_THREADS |
| 113 | int i; |
| 114 | #ifndef FAKE_THREADS |
| 115 | struct perl_thread *thr; |
| 116 | #endif /* FAKE_THREADS */ |
| 117 | #endif /* USE_THREADS */ |
| 118 | |
| 119 | if (!(curinterp = sv_interp)) |
| 120 | return; |
| 121 | |
| 122 | #ifdef MULTIPLICITY |
| 123 | Zero(sv_interp, 1, PerlInterpreter); |
| 124 | #endif |
| 125 | |
| 126 | /* Init the real globals (and main thread)? */ |
| 127 | if (!linestr) { |
| 128 | #ifdef USE_THREADS |
| 129 | |
| 130 | INIT_THREADS; |
| 131 | #ifdef ALLOC_THREAD_KEY |
| 132 | ALLOC_THREAD_KEY; |
| 133 | #else |
| 134 | if (pthread_key_create(&thr_key, 0)) |
| 135 | croak("panic: pthread_key_create"); |
| 136 | #endif |
| 137 | MUTEX_INIT(&sv_mutex); |
| 138 | /* |
| 139 | * Safe to use basic SV functions from now on (though |
| 140 | * not things like mortals or tainting yet). |
| 141 | */ |
| 142 | MUTEX_INIT(&eval_mutex); |
| 143 | COND_INIT(&eval_cond); |
| 144 | MUTEX_INIT(&threads_mutex); |
| 145 | COND_INIT(&nthreads_cond); |
| 146 | |
| 147 | thr = init_main_thread(); |
| 148 | #endif /* USE_THREADS */ |
| 149 | |
| 150 | linestr = NEWSV(65,80); |
| 151 | sv_upgrade(linestr,SVt_PVIV); |
| 152 | |
| 153 | if (!SvREADONLY(&sv_undef)) { |
| 154 | SvREADONLY_on(&sv_undef); |
| 155 | |
| 156 | sv_setpv(&sv_no,No); |
| 157 | SvNV(&sv_no); |
| 158 | SvREADONLY_on(&sv_no); |
| 159 | |
| 160 | sv_setpv(&sv_yes,Yes); |
| 161 | SvNV(&sv_yes); |
| 162 | SvREADONLY_on(&sv_yes); |
| 163 | } |
| 164 | |
| 165 | nrs = newSVpv("\n", 1); |
| 166 | rs = SvREFCNT_inc(nrs); |
| 167 | |
| 168 | sighandlerp = sighandler; |
| 169 | pidstatus = newHV(); |
| 170 | |
| 171 | #ifdef MSDOS |
| 172 | /* |
| 173 | * There is no way we can refer to them from Perl so close them to save |
| 174 | * space. The other alternative would be to provide STDAUX and STDPRN |
| 175 | * filehandles. |
| 176 | */ |
| 177 | (void)fclose(stdaux); |
| 178 | (void)fclose(stdprn); |
| 179 | #endif |
| 180 | } |
| 181 | |
| 182 | #ifdef MULTIPLICITY |
| 183 | I_REINIT; |
| 184 | perl_destruct_level = 1; |
| 185 | #else |
| 186 | if(perl_destruct_level > 0) |
| 187 | I_REINIT; |
| 188 | #endif |
| 189 | |
| 190 | init_ids(); |
| 191 | lex_state = LEX_NOTPARSING; |
| 192 | |
| 193 | start_env.je_prev = NULL; |
| 194 | start_env.je_ret = -1; |
| 195 | start_env.je_mustcatch = TRUE; |
| 196 | top_env = &start_env; |
| 197 | STATUS_ALL_SUCCESS; |
| 198 | |
| 199 | SET_NUMERIC_STANDARD(); |
| 200 | #if defined(SUBVERSION) && SUBVERSION > 0 |
| 201 | sprintf(patchlevel, "%7.5f", (double) 5 |
| 202 | + ((double) PATCHLEVEL / (double) 1000) |
| 203 | + ((double) SUBVERSION / (double) 100000)); |
| 204 | #else |
| 205 | sprintf(patchlevel, "%5.3f", (double) 5 + |
| 206 | ((double) PATCHLEVEL / (double) 1000)); |
| 207 | #endif |
| 208 | |
| 209 | #if defined(LOCAL_PATCH_COUNT) |
| 210 | localpatches = local_patches; /* For possible -v */ |
| 211 | #endif |
| 212 | |
| 213 | PerlIO_init(); /* Hook to IO system */ |
| 214 | |
| 215 | fdpid = newAV(); /* for remembering popen pids by fd */ |
| 216 | |
| 217 | init_stacks(ARGS); |
| 218 | DEBUG( { |
| 219 | New(51,debname,128,char); |
| 220 | New(52,debdelim,128,char); |
| 221 | } ) |
| 222 | |
| 223 | ENTER; |
| 224 | } |
| 225 | |
| 226 | void |
| 227 | perl_destruct(register PerlInterpreter *sv_interp) |
| 228 | { |
| 229 | dTHR; |
| 230 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
| 231 | I32 last_sv_count; |
| 232 | HV *hv; |
| 233 | #ifdef USE_THREADS |
| 234 | Thread t; |
| 235 | #endif /* USE_THREADS */ |
| 236 | |
| 237 | if (!(curinterp = sv_interp)) |
| 238 | return; |
| 239 | |
| 240 | #ifdef USE_THREADS |
| 241 | #ifndef FAKE_THREADS |
| 242 | /* Pass 1 on any remaining threads: detach joinables, join zombies */ |
| 243 | retry_cleanup: |
| 244 | MUTEX_LOCK(&threads_mutex); |
| 245 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 246 | "perl_destruct: waiting for %d threads...\n", |
| 247 | nthreads - 1)); |
| 248 | for (t = thr->next; t != thr; t = t->next) { |
| 249 | MUTEX_LOCK(&t->mutex); |
| 250 | switch (ThrSTATE(t)) { |
| 251 | AV *av; |
| 252 | case THRf_ZOMBIE: |
| 253 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 254 | "perl_destruct: joining zombie %p\n", t)); |
| 255 | ThrSETSTATE(t, THRf_DEAD); |
| 256 | MUTEX_UNLOCK(&t->mutex); |
| 257 | nthreads--; |
| 258 | /* |
| 259 | * The SvREFCNT_dec below may take a long time (e.g. av |
| 260 | * may contain an object scalar whose destructor gets |
| 261 | * called) so we have to unlock threads_mutex and start |
| 262 | * all over again. |
| 263 | */ |
| 264 | MUTEX_UNLOCK(&threads_mutex); |
| 265 | JOIN(t, &av); |
| 266 | SvREFCNT_dec((SV*)av); |
| 267 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 268 | "perl_destruct: joined zombie %p OK\n", t)); |
| 269 | goto retry_cleanup; |
| 270 | case THRf_R_JOINABLE: |
| 271 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 272 | "perl_destruct: detaching thread %p\n", t)); |
| 273 | ThrSETSTATE(t, THRf_R_DETACHED); |
| 274 | /* |
| 275 | * We unlock threads_mutex and t->mutex in the opposite order |
| 276 | * from which we locked them just so that DETACH won't |
| 277 | * deadlock if it panics. It's only a breach of good style |
| 278 | * not a bug since they are unlocks not locks. |
| 279 | */ |
| 280 | MUTEX_UNLOCK(&threads_mutex); |
| 281 | DETACH(t); |
| 282 | MUTEX_UNLOCK(&t->mutex); |
| 283 | goto retry_cleanup; |
| 284 | default: |
| 285 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 286 | "perl_destruct: ignoring %p (state %u)\n", |
| 287 | t, ThrSTATE(t))); |
| 288 | MUTEX_UNLOCK(&t->mutex); |
| 289 | /* fall through and out */ |
| 290 | } |
| 291 | } |
| 292 | /* We leave the above "Pass 1" loop with threads_mutex still locked */ |
| 293 | |
| 294 | /* Pass 2 on remaining threads: wait for the thread count to drop to one */ |
| 295 | while (nthreads > 1) |
| 296 | { |
| 297 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
| 298 | "perl_destruct: final wait for %d threads\n", |
| 299 | nthreads - 1)); |
| 300 | COND_WAIT(&nthreads_cond, &threads_mutex); |
| 301 | } |
| 302 | /* At this point, we're the last thread */ |
| 303 | MUTEX_UNLOCK(&threads_mutex); |
| 304 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n")); |
| 305 | MUTEX_DESTROY(&threads_mutex); |
| 306 | COND_DESTROY(&nthreads_cond); |
| 307 | #endif /* !defined(FAKE_THREADS) */ |
| 308 | #endif /* USE_THREADS */ |
| 309 | |
| 310 | destruct_level = perl_destruct_level; |
| 311 | #ifdef DEBUGGING |
| 312 | { |
| 313 | char *s; |
| 314 | if (s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL")) { |
| 315 | int i = atoi(s); |
| 316 | if (destruct_level < i) |
| 317 | destruct_level = i; |
| 318 | } |
| 319 | } |
| 320 | #endif |
| 321 | |
| 322 | LEAVE; |
| 323 | FREETMPS; |
| 324 | |
| 325 | /* We must account for everything. */ |
| 326 | |
| 327 | /* Destroy the main CV and syntax tree */ |
| 328 | if (main_root) { |
| 329 | curpad = AvARRAY(comppad); |
| 330 | op_free(main_root); |
| 331 | main_root = Nullop; |
| 332 | } |
| 333 | main_start = Nullop; |
| 334 | SvREFCNT_dec(main_cv); |
| 335 | main_cv = Nullcv; |
| 336 | |
| 337 | if (sv_objcount) { |
| 338 | /* |
| 339 | * Try to destruct global references. We do this first so that the |
| 340 | * destructors and destructees still exist. Some sv's might remain. |
| 341 | * Non-referenced objects are on their own. |
| 342 | */ |
| 343 | |
| 344 | dirty = TRUE; |
| 345 | sv_clean_objs(); |
| 346 | } |
| 347 | |
| 348 | /* unhook hooks which will soon be, or use, destroyed data */ |
| 349 | SvREFCNT_dec(warnhook); |
| 350 | warnhook = Nullsv; |
| 351 | SvREFCNT_dec(diehook); |
| 352 | diehook = Nullsv; |
| 353 | SvREFCNT_dec(parsehook); |
| 354 | parsehook = Nullsv; |
| 355 | |
| 356 | if (destruct_level == 0){ |
| 357 | |
| 358 | DEBUG_P(debprofdump()); |
| 359 | |
| 360 | /* The exit() function will do everything that needs doing. */ |
| 361 | return; |
| 362 | } |
| 363 | |
| 364 | /* loosen bonds of global variables */ |
| 365 | |
| 366 | if(rsfp) { |
| 367 | (void)PerlIO_close(rsfp); |
| 368 | rsfp = Nullfp; |
| 369 | } |
| 370 | |
| 371 | /* Filters for program text */ |
| 372 | SvREFCNT_dec(rsfp_filters); |
| 373 | rsfp_filters = Nullav; |
| 374 | |
| 375 | /* switches */ |
| 376 | preprocess = FALSE; |
| 377 | minus_n = FALSE; |
| 378 | minus_p = FALSE; |
| 379 | minus_l = FALSE; |
| 380 | minus_a = FALSE; |
| 381 | minus_F = FALSE; |
| 382 | doswitches = FALSE; |
| 383 | dowarn = FALSE; |
| 384 | doextract = FALSE; |
| 385 | sawampersand = FALSE; /* must save all match strings */ |
| 386 | sawstudy = FALSE; /* do fbm_instr on all strings */ |
| 387 | sawvec = FALSE; |
| 388 | unsafe = FALSE; |
| 389 | |
| 390 | Safefree(inplace); |
| 391 | inplace = Nullch; |
| 392 | |
| 393 | Safefree(e_tmpname); |
| 394 | e_tmpname = Nullch; |
| 395 | |
| 396 | if (e_fp) { |
| 397 | PerlIO_close(e_fp); |
| 398 | e_fp = Nullfp; |
| 399 | } |
| 400 | |
| 401 | /* magical thingies */ |
| 402 | |
| 403 | Safefree(ofs); /* $, */ |
| 404 | ofs = Nullch; |
| 405 | |
| 406 | Safefree(ors); /* $\ */ |
| 407 | ors = Nullch; |
| 408 | |
| 409 | SvREFCNT_dec(nrs); /* $\ helper */ |
| 410 | nrs = Nullsv; |
| 411 | |
| 412 | multiline = 0; /* $* */ |
| 413 | |
| 414 | SvREFCNT_dec(statname); |
| 415 | statname = Nullsv; |
| 416 | statgv = Nullgv; |
| 417 | |
| 418 | /* defgv, aka *_ should be taken care of elsewhere */ |
| 419 | |
| 420 | /* clean up after study() */ |
| 421 | SvREFCNT_dec(lastscream); |
| 422 | lastscream = Nullsv; |
| 423 | Safefree(screamfirst); |
| 424 | screamfirst = 0; |
| 425 | Safefree(screamnext); |
| 426 | screamnext = 0; |
| 427 | |
| 428 | /* startup and shutdown function lists */ |
| 429 | SvREFCNT_dec(beginav); |
| 430 | SvREFCNT_dec(endav); |
| 431 | SvREFCNT_dec(initav); |
| 432 | beginav = Nullav; |
| 433 | endav = Nullav; |
| 434 | initav = Nullav; |
| 435 | |
| 436 | /* temp stack during pp_sort() */ |
| 437 | SvREFCNT_dec(sortstack); |
| 438 | sortstack = Nullav; |
| 439 | |
| 440 | /* shortcuts just get cleared */ |
| 441 | envgv = Nullgv; |
| 442 | siggv = Nullgv; |
| 443 | incgv = Nullgv; |
| 444 | errgv = Nullgv; |
| 445 | argvgv = Nullgv; |
| 446 | argvoutgv = Nullgv; |
| 447 | stdingv = Nullgv; |
| 448 | last_in_gv = Nullgv; |
| 449 | |
| 450 | /* reset so print() ends up where we expect */ |
| 451 | setdefout(Nullgv); |
| 452 | |
| 453 | /* Prepare to destruct main symbol table. */ |
| 454 | |
| 455 | hv = defstash; |
| 456 | defstash = 0; |
| 457 | SvREFCNT_dec(hv); |
| 458 | |
| 459 | FREETMPS; |
| 460 | if (destruct_level >= 2) { |
| 461 | if (scopestack_ix != 0) |
| 462 | warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
| 463 | (long)scopestack_ix); |
| 464 | if (savestack_ix != 0) |
| 465 | warn("Unbalanced saves: %ld more saves than restores\n", |
| 466 | (long)savestack_ix); |
| 467 | if (tmps_floor != -1) |
| 468 | warn("Unbalanced tmps: %ld more allocs than frees\n", |
| 469 | (long)tmps_floor + 1); |
| 470 | if (cxstack_ix != -1) |
| 471 | warn("Unbalanced context: %ld more PUSHes than POPs\n", |
| 472 | (long)cxstack_ix + 1); |
| 473 | } |
| 474 | |
| 475 | /* Now absolutely destruct everything, somehow or other, loops or no. */ |
| 476 | last_sv_count = 0; |
| 477 | SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */ |
| 478 | while (sv_count != 0 && sv_count != last_sv_count) { |
| 479 | last_sv_count = sv_count; |
| 480 | sv_clean_all(); |
| 481 | } |
| 482 | SvFLAGS(strtab) &= ~SVTYPEMASK; |
| 483 | SvFLAGS(strtab) |= SVt_PVHV; |
| 484 | |
| 485 | /* Destruct the global string table. */ |
| 486 | { |
| 487 | /* Yell and reset the HeVAL() slots that are still holding refcounts, |
| 488 | * so that sv_free() won't fail on them. |
| 489 | */ |
| 490 | I32 riter; |
| 491 | I32 max; |
| 492 | HE *hent; |
| 493 | HE **array; |
| 494 | |
| 495 | riter = 0; |
| 496 | max = HvMAX(strtab); |
| 497 | array = HvARRAY(strtab); |
| 498 | hent = array[0]; |
| 499 | for (;;) { |
| 500 | if (hent) { |
| 501 | warn("Unbalanced string table refcount: (%d) for \"%s\"", |
| 502 | HeVAL(hent) - Nullsv, HeKEY(hent)); |
| 503 | HeVAL(hent) = Nullsv; |
| 504 | hent = HeNEXT(hent); |
| 505 | } |
| 506 | if (!hent) { |
| 507 | if (++riter > max) |
| 508 | break; |
| 509 | hent = array[riter]; |
| 510 | } |
| 511 | } |
| 512 | } |
| 513 | SvREFCNT_dec(strtab); |
| 514 | |
| 515 | if (sv_count != 0) |
| 516 | warn("Scalars leaked: %ld\n", (long)sv_count); |
| 517 | |
| 518 | sv_free_arenas(); |
| 519 | |
| 520 | /* No SVs have survived, need to clean out */ |
| 521 | linestr = NULL; |
| 522 | pidstatus = Nullhv; |
| 523 | if (origfilename) |
| 524 | Safefree(origfilename); |
| 525 | nuke_stacks(); |
| 526 | hints = 0; /* Reset hints. Should hints be per-interpreter ? */ |
| 527 | |
| 528 | DEBUG_P(debprofdump()); |
| 529 | #ifdef USE_THREADS |
| 530 | MUTEX_DESTROY(&sv_mutex); |
| 531 | MUTEX_DESTROY(&eval_mutex); |
| 532 | COND_DESTROY(&eval_cond); |
| 533 | |
| 534 | /* As the penultimate thing, free the non-arena SV for thrsv */ |
| 535 | Safefree(SvPVX(thrsv)); |
| 536 | Safefree(SvANY(thrsv)); |
| 537 | Safefree(thrsv); |
| 538 | thrsv = Nullsv; |
| 539 | #endif /* USE_THREADS */ |
| 540 | |
| 541 | /* As the absolutely last thing, free the non-arena SV for mess() */ |
| 542 | |
| 543 | if (mess_sv) { |
| 544 | /* we know that type >= SVt_PV */ |
| 545 | SvOOK_off(mess_sv); |
| 546 | Safefree(SvPVX(mess_sv)); |
| 547 | Safefree(SvANY(mess_sv)); |
| 548 | Safefree(mess_sv); |
| 549 | mess_sv = Nullsv; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | void |
| 554 | perl_free(PerlInterpreter *sv_interp) |
| 555 | { |
| 556 | if (!(curinterp = sv_interp)) |
| 557 | return; |
| 558 | Safefree(sv_interp); |
| 559 | } |
| 560 | |
| 561 | int |
| 562 | perl_parse(PerlInterpreter *sv_interp, void (*xsinit) (void), int argc, char **argv, char **env) |
| 563 | { |
| 564 | dTHR; |
| 565 | register SV *sv; |
| 566 | register char *s; |
| 567 | char *scriptname = NULL; |
| 568 | VOL bool dosearch = FALSE; |
| 569 | char *validarg = ""; |
| 570 | I32 oldscope; |
| 571 | AV* comppadlist; |
| 572 | dJMPENV; |
| 573 | int ret; |
| 574 | |
| 575 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 576 | #ifdef IAMSUID |
| 577 | #undef IAMSUID |
| 578 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
| 579 | setuid perl scripts securely.\n"); |
| 580 | #endif |
| 581 | #endif |
| 582 | |
| 583 | if (!(curinterp = sv_interp)) |
| 584 | return 255; |
| 585 | |
| 586 | #if defined(NeXT) && defined(__DYNAMIC__) |
| 587 | _dyld_lookup_and_bind |
| 588 | ("__environ", (unsigned long *) &environ_pointer, NULL); |
| 589 | #endif /* environ */ |
| 590 | |
| 591 | origargv = argv; |
| 592 | origargc = argc; |
| 593 | #ifndef VMS /* VMS doesn't have environ array */ |
| 594 | origenviron = environ; |
| 595 | #endif |
| 596 | e_tmpname = Nullch; |
| 597 | |
| 598 | if (do_undump) { |
| 599 | |
| 600 | /* Come here if running an undumped a.out. */ |
| 601 | |
| 602 | origfilename = savepv(argv[0]); |
| 603 | do_undump = FALSE; |
| 604 | cxstack_ix = -1; /* start label stack again */ |
| 605 | init_ids(); |
| 606 | init_postdump_symbols(argc,argv,env); |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | if (main_root) { |
| 611 | curpad = AvARRAY(comppad); |
| 612 | op_free(main_root); |
| 613 | main_root = Nullop; |
| 614 | } |
| 615 | main_start = Nullop; |
| 616 | SvREFCNT_dec(main_cv); |
| 617 | main_cv = Nullcv; |
| 618 | |
| 619 | time(&basetime); |
| 620 | oldscope = scopestack_ix; |
| 621 | |
| 622 | JMPENV_PUSH(ret); |
| 623 | switch (ret) { |
| 624 | case 1: |
| 625 | STATUS_ALL_FAILURE; |
| 626 | /* FALL THROUGH */ |
| 627 | case 2: |
| 628 | /* my_exit() was called */ |
| 629 | while (scopestack_ix > oldscope) |
| 630 | LEAVE; |
| 631 | FREETMPS; |
| 632 | curstash = defstash; |
| 633 | if (endav) |
| 634 | call_list(oldscope, endav); |
| 635 | JMPENV_POP; |
| 636 | return STATUS_NATIVE_EXPORT; |
| 637 | case 3: |
| 638 | JMPENV_POP; |
| 639 | PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); |
| 640 | return 1; |
| 641 | } |
| 642 | |
| 643 | sv_setpvn(linestr,"",0); |
| 644 | sv = newSVpv("",0); /* first used for -I flags */ |
| 645 | SAVEFREESV(sv); |
| 646 | init_main_stash(); |
| 647 | |
| 648 | for (argc--,argv++; argc > 0; argc--,argv++) { |
| 649 | if (argv[0][0] != '-' || !argv[0][1]) |
| 650 | break; |
| 651 | #ifdef DOSUID |
| 652 | if (*validarg) |
| 653 | validarg = " PHOOEY "; |
| 654 | else |
| 655 | validarg = argv[0]; |
| 656 | #endif |
| 657 | s = argv[0]+1; |
| 658 | reswitch: |
| 659 | switch (*s) { |
| 660 | case '0': |
| 661 | case 'F': |
| 662 | case 'a': |
| 663 | case 'c': |
| 664 | case 'd': |
| 665 | case 'D': |
| 666 | case 'h': |
| 667 | case 'i': |
| 668 | case 'l': |
| 669 | case 'M': |
| 670 | case 'm': |
| 671 | case 'n': |
| 672 | case 'p': |
| 673 | case 's': |
| 674 | case 'u': |
| 675 | case 'U': |
| 676 | case 'v': |
| 677 | case 'w': |
| 678 | if (s = moreswitches(s)) |
| 679 | goto reswitch; |
| 680 | break; |
| 681 | |
| 682 | case 'T': |
| 683 | tainting = TRUE; |
| 684 | s++; |
| 685 | goto reswitch; |
| 686 | |
| 687 | case 'e': |
| 688 | if (euid != uid || egid != gid) |
| 689 | croak("No -e allowed in setuid scripts"); |
| 690 | if (!e_fp) { |
| 691 | e_tmpname = savepv(TMPPATH); |
| 692 | (void)PerlLIO_mktemp(e_tmpname); |
| 693 | if (!*e_tmpname) |
| 694 | croak("Can't mktemp()"); |
| 695 | e_fp = PerlIO_open(e_tmpname,"w"); |
| 696 | if (!e_fp) |
| 697 | croak("Cannot open temporary file"); |
| 698 | } |
| 699 | if (*++s) |
| 700 | PerlIO_puts(e_fp,s); |
| 701 | else if (argv[1]) { |
| 702 | PerlIO_puts(e_fp,argv[1]); |
| 703 | argc--,argv++; |
| 704 | } |
| 705 | else |
| 706 | croak("No code specified for -e"); |
| 707 | (void)PerlIO_putc(e_fp,'\n'); |
| 708 | break; |
| 709 | case 'I': /* -I handled both here and in moreswitches() */ |
| 710 | forbid_setid("-I"); |
| 711 | if (!*++s && (s=argv[1]) != Nullch) { |
| 712 | argc--,argv++; |
| 713 | } |
| 714 | while (s && isSPACE(*s)) |
| 715 | ++s; |
| 716 | if (s && *s) { |
| 717 | char *e, *p; |
| 718 | for (e = s; *e && !isSPACE(*e); e++) ; |
| 719 | p = savepvn(s, e-s); |
| 720 | incpush(p, TRUE); |
| 721 | sv_catpv(sv,"-I"); |
| 722 | sv_catpv(sv,p); |
| 723 | sv_catpv(sv," "); |
| 724 | Safefree(p); |
| 725 | } /* XXX else croak? */ |
| 726 | break; |
| 727 | case 'P': |
| 728 | forbid_setid("-P"); |
| 729 | preprocess = TRUE; |
| 730 | s++; |
| 731 | goto reswitch; |
| 732 | case 'S': |
| 733 | forbid_setid("-S"); |
| 734 | dosearch = TRUE; |
| 735 | s++; |
| 736 | goto reswitch; |
| 737 | case 'V': |
| 738 | if (!preambleav) |
| 739 | preambleav = newAV(); |
| 740 | av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); |
| 741 | if (*++s != ':') { |
| 742 | Sv = newSVpv("print myconfig();",0); |
| 743 | #ifdef VMS |
| 744 | sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); |
| 745 | #else |
| 746 | sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); |
| 747 | #endif |
| 748 | #if defined(DEBUGGING) || defined(NO_EMBED) || defined(MULTIPLICITY) |
| 749 | sv_catpv(Sv,"\" Compile-time options:"); |
| 750 | # ifdef DEBUGGING |
| 751 | sv_catpv(Sv," DEBUGGING"); |
| 752 | # endif |
| 753 | # ifdef NO_EMBED |
| 754 | sv_catpv(Sv," NO_EMBED"); |
| 755 | # endif |
| 756 | # ifdef MULTIPLICITY |
| 757 | sv_catpv(Sv," MULTIPLICITY"); |
| 758 | # endif |
| 759 | sv_catpv(Sv,"\\n\","); |
| 760 | #endif |
| 761 | #if defined(LOCAL_PATCH_COUNT) |
| 762 | if (LOCAL_PATCH_COUNT > 0) { |
| 763 | int i; |
| 764 | sv_catpv(Sv,"\" Locally applied patches:\\n\","); |
| 765 | for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { |
| 766 | if (localpatches[i]) |
| 767 | sv_catpvf(Sv,"\" \\t%s\\n\",",localpatches[i]); |
| 768 | } |
| 769 | } |
| 770 | #endif |
| 771 | sv_catpvf(Sv,"\" Built under %s\\n\"",OSNAME); |
| 772 | #ifdef __DATE__ |
| 773 | # ifdef __TIME__ |
| 774 | sv_catpvf(Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); |
| 775 | # else |
| 776 | sv_catpvf(Sv,",\" Compiled on %s\\n\"",__DATE__); |
| 777 | # endif |
| 778 | #endif |
| 779 | sv_catpv(Sv, "; \ |
| 780 | $\"=\"\\n \"; \ |
| 781 | @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \ |
| 782 | print \" \\%ENV:\\n @env\\n\" if @env; \ |
| 783 | print \" \\@INC:\\n @INC\\n\";"); |
| 784 | } |
| 785 | else { |
| 786 | Sv = newSVpv("config_vars(qw(",0); |
| 787 | sv_catpv(Sv, ++s); |
| 788 | sv_catpv(Sv, "))"); |
| 789 | s += strlen(s); |
| 790 | } |
| 791 | av_push(preambleav, Sv); |
| 792 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 793 | goto reswitch; |
| 794 | case 'x': |
| 795 | doextract = TRUE; |
| 796 | s++; |
| 797 | if (*s) |
| 798 | cddir = savepv(s); |
| 799 | break; |
| 800 | case 0: |
| 801 | break; |
| 802 | case '-': |
| 803 | if (!*++s || isSPACE(*s)) { |
| 804 | argc--,argv++; |
| 805 | goto switch_end; |
| 806 | } |
| 807 | /* catch use of gnu style long options */ |
| 808 | if (strEQ(s, "version")) { |
| 809 | s = "v"; |
| 810 | goto reswitch; |
| 811 | } |
| 812 | if (strEQ(s, "help")) { |
| 813 | s = "h"; |
| 814 | goto reswitch; |
| 815 | } |
| 816 | s--; |
| 817 | /* FALL THROUGH */ |
| 818 | default: |
| 819 | croak("Unrecognized switch: -%s (-h will show valid options)",s); |
| 820 | } |
| 821 | } |
| 822 | switch_end: |
| 823 | |
| 824 | if (!tainting && (s = PerlEnv_getenv("PERL5OPT"))) { |
| 825 | while (s && *s) { |
| 826 | while (isSPACE(*s)) |
| 827 | s++; |
| 828 | if (*s == '-') { |
| 829 | s++; |
| 830 | if (isSPACE(*s)) |
| 831 | continue; |
| 832 | } |
| 833 | if (!*s) |
| 834 | break; |
| 835 | if (!strchr("DIMUdmw", *s)) |
| 836 | croak("Illegal switch in PERL5OPT: -%c", *s); |
| 837 | s = moreswitches(s); |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | if (!scriptname) |
| 842 | scriptname = argv[0]; |
| 843 | if (e_fp) { |
| 844 | if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp)) { |
| 845 | #ifndef MULTIPLICITY |
| 846 | warn("Did you forget to compile with -DMULTIPLICITY?"); |
| 847 | #endif |
| 848 | croak("Can't write to temp file for -e: %s", Strerror(errno)); |
| 849 | } |
| 850 | e_fp = Nullfp; |
| 851 | argc++,argv--; |
| 852 | scriptname = e_tmpname; |
| 853 | } |
| 854 | else if (scriptname == Nullch) { |
| 855 | #ifdef MSDOS |
| 856 | if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) |
| 857 | moreswitches("h"); |
| 858 | #endif |
| 859 | scriptname = "-"; |
| 860 | } |
| 861 | |
| 862 | init_perllib(); |
| 863 | |
| 864 | open_script(scriptname,dosearch,sv); |
| 865 | |
| 866 | validate_suid(validarg, scriptname); |
| 867 | |
| 868 | if (doextract) |
| 869 | find_beginning(); |
| 870 | |
| 871 | main_cv = compcv = (CV*)NEWSV(1104,0); |
| 872 | sv_upgrade((SV *)compcv, SVt_PVCV); |
| 873 | CvUNIQUE_on(compcv); |
| 874 | |
| 875 | comppad = newAV(); |
| 876 | av_push(comppad, Nullsv); |
| 877 | curpad = AvARRAY(comppad); |
| 878 | comppad_name = newAV(); |
| 879 | comppad_name_fill = 0; |
| 880 | min_intro_pending = 0; |
| 881 | padix = 0; |
| 882 | #ifdef USE_THREADS |
| 883 | av_store(comppad_name, 0, newSVpv("@_", 2)); |
| 884 | curpad[0] = (SV*)newAV(); |
| 885 | SvPADMY_on(curpad[0]); /* XXX Needed? */ |
| 886 | CvOWNER(compcv) = 0; |
| 887 | New(666, CvMUTEXP(compcv), 1, perl_mutex); |
| 888 | MUTEX_INIT(CvMUTEXP(compcv)); |
| 889 | #endif /* USE_THREADS */ |
| 890 | |
| 891 | comppadlist = newAV(); |
| 892 | AvREAL_off(comppadlist); |
| 893 | av_store(comppadlist, 0, (SV*)comppad_name); |
| 894 | av_store(comppadlist, 1, (SV*)comppad); |
| 895 | CvPADLIST(compcv) = comppadlist; |
| 896 | |
| 897 | boot_core_UNIVERSAL(); |
| 898 | if (xsinit) |
| 899 | (*xsinit)(); /* in case linked C routines want magical variables */ |
| 900 | #if defined(VMS) || defined(WIN32) || defined(DJGPP) |
| 901 | init_os_extras(); |
| 902 | #endif |
| 903 | |
| 904 | #if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__) |
| 905 | DEBUG_L(PerlProc_signal(SIGSEGV, (void(*)(int))catch_sigsegv);); |
| 906 | #endif |
| 907 | |
| 908 | init_predump_symbols(); |
| 909 | if (!do_undump) |
| 910 | init_postdump_symbols(argc,argv,env); |
| 911 | |
| 912 | init_lexer(); |
| 913 | |
| 914 | /* now parse the script */ |
| 915 | |
| 916 | SETERRNO(0,SS$_NORMAL); |
| 917 | error_count = 0; |
| 918 | if (yyparse() || error_count) { |
| 919 | if (minus_c) |
| 920 | croak("%s had compilation errors.\n", origfilename); |
| 921 | else { |
| 922 | croak("Execution of %s aborted due to compilation errors.\n", |
| 923 | origfilename); |
| 924 | } |
| 925 | } |
| 926 | curcop->cop_line = 0; |
| 927 | curstash = defstash; |
| 928 | preprocess = FALSE; |
| 929 | if (e_tmpname) { |
| 930 | (void)UNLINK(e_tmpname); |
| 931 | Safefree(e_tmpname); |
| 932 | e_tmpname = Nullch; |
| 933 | } |
| 934 | |
| 935 | /* now that script is parsed, we can modify record separator */ |
| 936 | SvREFCNT_dec(rs); |
| 937 | rs = SvREFCNT_inc(nrs); |
| 938 | sv_setsv(perl_get_sv("/", TRUE), rs); |
| 939 | if (do_undump) |
| 940 | my_unexec(); |
| 941 | |
| 942 | if (dowarn) |
| 943 | gv_check(defstash); |
| 944 | |
| 945 | LEAVE; |
| 946 | FREETMPS; |
| 947 | |
| 948 | #ifdef MYMALLOC |
| 949 | if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) |
| 950 | dump_mstats("after compilation:"); |
| 951 | #endif |
| 952 | |
| 953 | ENTER; |
| 954 | restartop = 0; |
| 955 | JMPENV_POP; |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | int |
| 960 | perl_run(PerlInterpreter *sv_interp) |
| 961 | { |
| 962 | dTHR; |
| 963 | I32 oldscope; |
| 964 | dJMPENV; |
| 965 | int ret; |
| 966 | |
| 967 | if (!(curinterp = sv_interp)) |
| 968 | return 255; |
| 969 | |
| 970 | oldscope = scopestack_ix; |
| 971 | |
| 972 | JMPENV_PUSH(ret); |
| 973 | switch (ret) { |
| 974 | case 1: |
| 975 | cxstack_ix = -1; /* start context stack again */ |
| 976 | break; |
| 977 | case 2: |
| 978 | /* my_exit() was called */ |
| 979 | while (scopestack_ix > oldscope) |
| 980 | LEAVE; |
| 981 | FREETMPS; |
| 982 | curstash = defstash; |
| 983 | if (endav) |
| 984 | call_list(oldscope, endav); |
| 985 | #ifdef MYMALLOC |
| 986 | if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) |
| 987 | dump_mstats("after execution: "); |
| 988 | #endif |
| 989 | JMPENV_POP; |
| 990 | return STATUS_NATIVE_EXPORT; |
| 991 | case 3: |
| 992 | if (!restartop) { |
| 993 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
| 994 | FREETMPS; |
| 995 | JMPENV_POP; |
| 996 | return 1; |
| 997 | } |
| 998 | if (curstack != mainstack) { |
| 999 | dSP; |
| 1000 | SWITCHSTACK(curstack, mainstack); |
| 1001 | } |
| 1002 | break; |
| 1003 | } |
| 1004 | |
| 1005 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", |
| 1006 | sawampersand ? "Enabling" : "Omitting")); |
| 1007 | |
| 1008 | if (!restartop) { |
| 1009 | DEBUG_x(dump_all()); |
| 1010 | DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
| 1011 | #ifdef USE_THREADS |
| 1012 | DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n", |
| 1013 | (unsigned long) thr)); |
| 1014 | #endif /* USE_THREADS */ |
| 1015 | |
| 1016 | if (minus_c) { |
| 1017 | PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename); |
| 1018 | my_exit(0); |
| 1019 | } |
| 1020 | if (PERLDB_SINGLE && DBsingle) |
| 1021 | sv_setiv(DBsingle, 1); |
| 1022 | if (initav) |
| 1023 | call_list(oldscope, initav); |
| 1024 | } |
| 1025 | |
| 1026 | /* do it */ |
| 1027 | |
| 1028 | if (restartop) { |
| 1029 | op = restartop; |
| 1030 | restartop = 0; |
| 1031 | runops(); |
| 1032 | } |
| 1033 | else if (main_start) { |
| 1034 | CvDEPTH(main_cv) = 1; |
| 1035 | op = main_start; |
| 1036 | runops(); |
| 1037 | } |
| 1038 | |
| 1039 | my_exit(0); |
| 1040 | /* NOTREACHED */ |
| 1041 | return 0; |
| 1042 | } |
| 1043 | |
| 1044 | SV* |
| 1045 | perl_get_sv(char *name, I32 create) |
| 1046 | { |
| 1047 | GV *gv; |
| 1048 | #ifdef USE_THREADS |
| 1049 | if (name[1] == '\0' && !isALPHA(name[0])) { |
| 1050 | PADOFFSET tmp = find_threadsv(name); |
| 1051 | if (tmp != NOT_IN_PAD) { |
| 1052 | dTHR; |
| 1053 | return THREADSV(tmp); |
| 1054 | } |
| 1055 | } |
| 1056 | #endif /* USE_THREADS */ |
| 1057 | gv = gv_fetchpv(name, create, SVt_PV); |
| 1058 | if (gv) |
| 1059 | return GvSV(gv); |
| 1060 | return Nullsv; |
| 1061 | } |
| 1062 | |
| 1063 | AV* |
| 1064 | perl_get_av(char *name, I32 create) |
| 1065 | { |
| 1066 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); |
| 1067 | if (create) |
| 1068 | return GvAVn(gv); |
| 1069 | if (gv) |
| 1070 | return GvAV(gv); |
| 1071 | return Nullav; |
| 1072 | } |
| 1073 | |
| 1074 | HV* |
| 1075 | perl_get_hv(char *name, I32 create) |
| 1076 | { |
| 1077 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); |
| 1078 | if (create) |
| 1079 | return GvHVn(gv); |
| 1080 | if (gv) |
| 1081 | return GvHV(gv); |
| 1082 | return Nullhv; |
| 1083 | } |
| 1084 | |
| 1085 | CV* |
| 1086 | perl_get_cv(char *name, I32 create) |
| 1087 | { |
| 1088 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); |
| 1089 | if (create && !GvCVu(gv)) |
| 1090 | return newSUB(start_subparse(FALSE, 0), |
| 1091 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
| 1092 | Nullop, |
| 1093 | Nullop); |
| 1094 | if (gv) |
| 1095 | return GvCVu(gv); |
| 1096 | return Nullcv; |
| 1097 | } |
| 1098 | |
| 1099 | /* Be sure to refetch the stack pointer after calling these routines. */ |
| 1100 | |
| 1101 | I32 |
| 1102 | perl_call_argv(char *sub_name, I32 flags, register char **argv) |
| 1103 | |
| 1104 | /* See G_* flags in cop.h */ |
| 1105 | /* null terminated arg list */ |
| 1106 | { |
| 1107 | dSP; |
| 1108 | |
| 1109 | PUSHMARK(sp); |
| 1110 | if (argv) { |
| 1111 | while (*argv) { |
| 1112 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
| 1113 | argv++; |
| 1114 | } |
| 1115 | PUTBACK; |
| 1116 | } |
| 1117 | return perl_call_pv(sub_name, flags); |
| 1118 | } |
| 1119 | |
| 1120 | I32 |
| 1121 | perl_call_pv(char *sub_name, I32 flags) |
| 1122 | /* name of the subroutine */ |
| 1123 | /* See G_* flags in cop.h */ |
| 1124 | { |
| 1125 | return perl_call_sv((SV*)perl_get_cv(sub_name, TRUE), flags); |
| 1126 | } |
| 1127 | |
| 1128 | I32 |
| 1129 | perl_call_method(char *methname, I32 flags) |
| 1130 | /* name of the subroutine */ |
| 1131 | /* See G_* flags in cop.h */ |
| 1132 | { |
| 1133 | dSP; |
| 1134 | OP myop; |
| 1135 | if (!op) |
| 1136 | op = &myop; |
| 1137 | XPUSHs(sv_2mortal(newSVpv(methname,0))); |
| 1138 | PUTBACK; |
| 1139 | pp_method(ARGS); |
| 1140 | return perl_call_sv(*stack_sp--, flags); |
| 1141 | } |
| 1142 | |
| 1143 | /* May be called with any of a CV, a GV, or an SV containing the name. */ |
| 1144 | I32 |
| 1145 | perl_call_sv(SV *sv, I32 flags) |
| 1146 | |
| 1147 | /* See G_* flags in cop.h */ |
| 1148 | { |
| 1149 | dTHR; |
| 1150 | LOGOP myop; /* fake syntax tree node */ |
| 1151 | SV** sp = stack_sp; |
| 1152 | I32 oldmark; |
| 1153 | I32 retval; |
| 1154 | I32 oldscope; |
| 1155 | static CV *DBcv; |
| 1156 | bool oldcatch = CATCH_GET; |
| 1157 | dJMPENV; |
| 1158 | int ret; |
| 1159 | OP* oldop = op; |
| 1160 | |
| 1161 | if (flags & G_DISCARD) { |
| 1162 | ENTER; |
| 1163 | SAVETMPS; |
| 1164 | } |
| 1165 | |
| 1166 | Zero(&myop, 1, LOGOP); |
| 1167 | myop.op_next = Nullop; |
| 1168 | if (!(flags & G_NOARGS)) |
| 1169 | myop.op_flags |= OPf_STACKED; |
| 1170 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1171 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1172 | OPf_WANT_SCALAR); |
| 1173 | SAVEOP(); |
| 1174 | op = (OP*)&myop; |
| 1175 | |
| 1176 | EXTEND(stack_sp, 1); |
| 1177 | *++stack_sp = sv; |
| 1178 | oldmark = TOPMARK; |
| 1179 | oldscope = scopestack_ix; |
| 1180 | |
| 1181 | if (PERLDB_SUB && curstash != debstash |
| 1182 | /* Handle first BEGIN of -d. */ |
| 1183 | && (DBcv || (DBcv = GvCV(DBsub))) |
| 1184 | /* Try harder, since this may have been a sighandler, thus |
| 1185 | * curstash may be meaningless. */ |
| 1186 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash)) |
| 1187 | op->op_private |= OPpENTERSUB_DB; |
| 1188 | |
| 1189 | if (flags & G_EVAL) { |
| 1190 | cLOGOP->op_other = op; |
| 1191 | markstack_ptr--; |
| 1192 | /* we're trying to emulate pp_entertry() here */ |
| 1193 | { |
| 1194 | register PERL_CONTEXT *cx; |
| 1195 | I32 gimme = GIMME_V; |
| 1196 | |
| 1197 | ENTER; |
| 1198 | SAVETMPS; |
| 1199 | |
| 1200 | push_return(op->op_next); |
| 1201 | PUSHBLOCK(cx, CXt_EVAL, stack_sp); |
| 1202 | PUSHEVAL(cx, 0, 0); |
| 1203 | eval_root = op; /* Only needed so that goto works right. */ |
| 1204 | |
| 1205 | in_eval = 1; |
| 1206 | if (flags & G_KEEPERR) |
| 1207 | in_eval |= 4; |
| 1208 | else |
| 1209 | sv_setpv(ERRSV,""); |
| 1210 | } |
| 1211 | markstack_ptr++; |
| 1212 | |
| 1213 | JMPENV_PUSH(ret); |
| 1214 | switch (ret) { |
| 1215 | case 0: |
| 1216 | break; |
| 1217 | case 1: |
| 1218 | STATUS_ALL_FAILURE; |
| 1219 | /* FALL THROUGH */ |
| 1220 | case 2: |
| 1221 | /* my_exit() was called */ |
| 1222 | curstash = defstash; |
| 1223 | FREETMPS; |
| 1224 | JMPENV_POP; |
| 1225 | if (statusvalue) |
| 1226 | croak("Callback called exit"); |
| 1227 | my_exit_jump(); |
| 1228 | /* NOTREACHED */ |
| 1229 | case 3: |
| 1230 | if (restartop) { |
| 1231 | op = restartop; |
| 1232 | restartop = 0; |
| 1233 | break; |
| 1234 | } |
| 1235 | stack_sp = stack_base + oldmark; |
| 1236 | if (flags & G_ARRAY) |
| 1237 | retval = 0; |
| 1238 | else { |
| 1239 | retval = 1; |
| 1240 | *++stack_sp = &sv_undef; |
| 1241 | } |
| 1242 | goto cleanup; |
| 1243 | } |
| 1244 | } |
| 1245 | else |
| 1246 | CATCH_SET(TRUE); |
| 1247 | |
| 1248 | if (op == (OP*)&myop) |
| 1249 | op = pp_entersub(ARGS); |
| 1250 | if (op) |
| 1251 | runops(); |
| 1252 | retval = stack_sp - (stack_base + oldmark); |
| 1253 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
| 1254 | sv_setpv(ERRSV,""); |
| 1255 | |
| 1256 | cleanup: |
| 1257 | if (flags & G_EVAL) { |
| 1258 | if (scopestack_ix > oldscope) { |
| 1259 | SV **newsp; |
| 1260 | PMOP *newpm; |
| 1261 | I32 gimme; |
| 1262 | register PERL_CONTEXT *cx; |
| 1263 | I32 optype; |
| 1264 | |
| 1265 | POPBLOCK(cx,newpm); |
| 1266 | POPEVAL(cx); |
| 1267 | pop_return(); |
| 1268 | curpm = newpm; |
| 1269 | LEAVE; |
| 1270 | } |
| 1271 | JMPENV_POP; |
| 1272 | } |
| 1273 | else |
| 1274 | CATCH_SET(oldcatch); |
| 1275 | |
| 1276 | if (flags & G_DISCARD) { |
| 1277 | stack_sp = stack_base + oldmark; |
| 1278 | retval = 0; |
| 1279 | FREETMPS; |
| 1280 | LEAVE; |
| 1281 | } |
| 1282 | op = oldop; |
| 1283 | return retval; |
| 1284 | } |
| 1285 | |
| 1286 | /* Eval a string. The G_EVAL flag is always assumed. */ |
| 1287 | |
| 1288 | I32 |
| 1289 | perl_eval_sv(SV *sv, I32 flags) |
| 1290 | |
| 1291 | /* See G_* flags in cop.h */ |
| 1292 | { |
| 1293 | dTHR; |
| 1294 | UNOP myop; /* fake syntax tree node */ |
| 1295 | SV** sp = stack_sp; |
| 1296 | I32 oldmark = sp - stack_base; |
| 1297 | I32 retval; |
| 1298 | I32 oldscope; |
| 1299 | dJMPENV; |
| 1300 | int ret; |
| 1301 | OP* oldop = op; |
| 1302 | |
| 1303 | if (flags & G_DISCARD) { |
| 1304 | ENTER; |
| 1305 | SAVETMPS; |
| 1306 | } |
| 1307 | |
| 1308 | SAVEOP(); |
| 1309 | op = (OP*)&myop; |
| 1310 | Zero(op, 1, UNOP); |
| 1311 | EXTEND(stack_sp, 1); |
| 1312 | *++stack_sp = sv; |
| 1313 | oldscope = scopestack_ix; |
| 1314 | |
| 1315 | if (!(flags & G_NOARGS)) |
| 1316 | myop.op_flags = OPf_STACKED; |
| 1317 | myop.op_next = Nullop; |
| 1318 | myop.op_type = OP_ENTEREVAL; |
| 1319 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 1320 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 1321 | OPf_WANT_SCALAR); |
| 1322 | if (flags & G_KEEPERR) |
| 1323 | myop.op_flags |= OPf_SPECIAL; |
| 1324 | |
| 1325 | JMPENV_PUSH(ret); |
| 1326 | switch (ret) { |
| 1327 | case 0: |
| 1328 | break; |
| 1329 | case 1: |
| 1330 | STATUS_ALL_FAILURE; |
| 1331 | /* FALL THROUGH */ |
| 1332 | case 2: |
| 1333 | /* my_exit() was called */ |
| 1334 | curstash = defstash; |
| 1335 | FREETMPS; |
| 1336 | JMPENV_POP; |
| 1337 | if (statusvalue) |
| 1338 | croak("Callback called exit"); |
| 1339 | my_exit_jump(); |
| 1340 | /* NOTREACHED */ |
| 1341 | case 3: |
| 1342 | if (restartop) { |
| 1343 | op = restartop; |
| 1344 | restartop = 0; |
| 1345 | break; |
| 1346 | } |
| 1347 | stack_sp = stack_base + oldmark; |
| 1348 | if (flags & G_ARRAY) |
| 1349 | retval = 0; |
| 1350 | else { |
| 1351 | retval = 1; |
| 1352 | *++stack_sp = &sv_undef; |
| 1353 | } |
| 1354 | goto cleanup; |
| 1355 | } |
| 1356 | |
| 1357 | if (op == (OP*)&myop) |
| 1358 | op = pp_entereval(ARGS); |
| 1359 | if (op) |
| 1360 | runops(); |
| 1361 | retval = stack_sp - (stack_base + oldmark); |
| 1362 | if (!(flags & G_KEEPERR)) |
| 1363 | sv_setpv(ERRSV,""); |
| 1364 | |
| 1365 | cleanup: |
| 1366 | JMPENV_POP; |
| 1367 | if (flags & G_DISCARD) { |
| 1368 | stack_sp = stack_base + oldmark; |
| 1369 | retval = 0; |
| 1370 | FREETMPS; |
| 1371 | LEAVE; |
| 1372 | } |
| 1373 | op = oldop; |
| 1374 | return retval; |
| 1375 | } |
| 1376 | |
| 1377 | SV* |
| 1378 | perl_eval_pv(char *p, I32 croak_on_error) |
| 1379 | { |
| 1380 | dSP; |
| 1381 | SV* sv = newSVpv(p, 0); |
| 1382 | |
| 1383 | PUSHMARK(sp); |
| 1384 | perl_eval_sv(sv, G_SCALAR); |
| 1385 | SvREFCNT_dec(sv); |
| 1386 | |
| 1387 | SPAGAIN; |
| 1388 | sv = POPs; |
| 1389 | PUTBACK; |
| 1390 | |
| 1391 | if (croak_on_error && SvTRUE(ERRSV)) |
| 1392 | croak(SvPVx(ERRSV, na)); |
| 1393 | |
| 1394 | return sv; |
| 1395 | } |
| 1396 | |
| 1397 | /* Require a module. */ |
| 1398 | |
| 1399 | void |
| 1400 | perl_require_pv(char *pv) |
| 1401 | { |
| 1402 | SV* sv = sv_newmortal(); |
| 1403 | sv_setpv(sv, "require '"); |
| 1404 | sv_catpv(sv, pv); |
| 1405 | sv_catpv(sv, "'"); |
| 1406 | perl_eval_sv(sv, G_DISCARD); |
| 1407 | } |
| 1408 | |
| 1409 | void |
| 1410 | magicname(char *sym, char *name, I32 namlen) |
| 1411 | { |
| 1412 | register GV *gv; |
| 1413 | |
| 1414 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
| 1415 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
| 1416 | } |
| 1417 | |
| 1418 | static void |
| 1419 | usage(char *name) /* XXX move this out into a module ? */ |
| 1420 | |
| 1421 | { |
| 1422 | /* This message really ought to be max 23 lines. |
| 1423 | * Removed -h because the user already knows that opton. Others? */ |
| 1424 | |
| 1425 | static char *usage[] = { |
| 1426 | "-0[octal] specify record separator (\\0, if no argument)", |
| 1427 | "-a autosplit mode with -n or -p (splits $_ into @F)", |
| 1428 | "-c check syntax only (runs BEGIN and END blocks)", |
| 1429 | "-d[:debugger] run scripts under debugger", |
| 1430 | "-D[number/list] set debugging flags (argument is a bit mask or flags)", |
| 1431 | "-e 'command' one line of script. Several -e's allowed. Omit [programfile].", |
| 1432 | "-F/pattern/ split() pattern for autosplit (-a). The //'s are optional.", |
| 1433 | "-i[extension] edit <> files in place (make backup if extension supplied)", |
| 1434 | "-Idirectory specify @INC/#include directory (may be used more than once)", |
| 1435 | "-l[octal] enable line ending processing, specifies line terminator", |
| 1436 | "-[mM][-]module.. executes `use/no module...' before executing your script.", |
| 1437 | "-n assume 'while (<>) { ... }' loop around your script", |
| 1438 | "-p assume loop like -n but print line also like sed", |
| 1439 | "-P run script through C preprocessor before compilation", |
| 1440 | "-s enable some switch parsing for switches after script name", |
| 1441 | "-S look for the script using PATH environment variable", |
| 1442 | "-T turn on tainting checks", |
| 1443 | "-u dump core after parsing script", |
| 1444 | "-U allow unsafe operations", |
| 1445 | "-v print version number and patchlevel of perl", |
| 1446 | "-V[:variable] print perl configuration information", |
| 1447 | "-w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT. Recommended.", |
| 1448 | "-x[directory] strip off text before #!perl line and perhaps cd to directory", |
| 1449 | "\n", |
| 1450 | NULL |
| 1451 | }; |
| 1452 | char **p = usage; |
| 1453 | |
| 1454 | printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name); |
| 1455 | while (*p) |
| 1456 | printf("\n %s", *p++); |
| 1457 | } |
| 1458 | |
| 1459 | /* This routine handles any switches that can be given during run */ |
| 1460 | |
| 1461 | char * |
| 1462 | moreswitches(char *s) |
| 1463 | { |
| 1464 | I32 numlen; |
| 1465 | U32 rschar; |
| 1466 | |
| 1467 | switch (*s) { |
| 1468 | case '0': |
| 1469 | { |
| 1470 | dTHR; |
| 1471 | rschar = scan_oct(s, 4, &numlen); |
| 1472 | SvREFCNT_dec(nrs); |
| 1473 | if (rschar & ~((U8)~0)) |
| 1474 | nrs = &sv_undef; |
| 1475 | else if (!rschar && numlen >= 2) |
| 1476 | nrs = newSVpv("", 0); |
| 1477 | else { |
| 1478 | char ch = rschar; |
| 1479 | nrs = newSVpv(&ch, 1); |
| 1480 | } |
| 1481 | return s + numlen; |
| 1482 | } |
| 1483 | case 'F': |
| 1484 | minus_F = TRUE; |
| 1485 | splitstr = savepv(s + 1); |
| 1486 | s += strlen(s); |
| 1487 | return s; |
| 1488 | case 'a': |
| 1489 | minus_a = TRUE; |
| 1490 | s++; |
| 1491 | return s; |
| 1492 | case 'c': |
| 1493 | minus_c = TRUE; |
| 1494 | s++; |
| 1495 | return s; |
| 1496 | case 'd': |
| 1497 | forbid_setid("-d"); |
| 1498 | s++; |
| 1499 | if (*s == ':' || *s == '=') { |
| 1500 | my_setenv("PERL5DB", form("use Devel::%s;", ++s)); |
| 1501 | s += strlen(s); |
| 1502 | } |
| 1503 | if (!perldb) { |
| 1504 | perldb = PERLDB_ALL; |
| 1505 | init_debugger(); |
| 1506 | } |
| 1507 | return s; |
| 1508 | case 'D': |
| 1509 | #ifdef DEBUGGING |
| 1510 | forbid_setid("-D"); |
| 1511 | if (isALPHA(s[1])) { |
| 1512 | static char debopts[] = "psltocPmfrxuLHXD"; |
| 1513 | char *d; |
| 1514 | |
| 1515 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
| 1516 | debug |= 1 << (d - debopts); |
| 1517 | } |
| 1518 | else { |
| 1519 | debug = atoi(s+1); |
| 1520 | for (s++; isDIGIT(*s); s++) ; |
| 1521 | } |
| 1522 | debug |= 0x80000000; |
| 1523 | #else |
| 1524 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); |
| 1525 | for (s++; isALNUM(*s); s++) ; |
| 1526 | #endif |
| 1527 | /*SUPPRESS 530*/ |
| 1528 | return s; |
| 1529 | case 'h': |
| 1530 | usage(origargv[0]); |
| 1531 | PerlProc_exit(0); |
| 1532 | case 'i': |
| 1533 | if (inplace) |
| 1534 | Safefree(inplace); |
| 1535 | inplace = savepv(s+1); |
| 1536 | /*SUPPRESS 530*/ |
| 1537 | for (s = inplace; *s && !isSPACE(*s); s++) ; |
| 1538 | if (*s) |
| 1539 | *s++ = '\0'; |
| 1540 | return s; |
| 1541 | case 'I': /* -I handled both here and in parse_perl() */ |
| 1542 | forbid_setid("-I"); |
| 1543 | ++s; |
| 1544 | while (*s && isSPACE(*s)) |
| 1545 | ++s; |
| 1546 | if (*s) { |
| 1547 | char *e, *p; |
| 1548 | for (e = s; *e && !isSPACE(*e); e++) ; |
| 1549 | p = savepvn(s, e-s); |
| 1550 | incpush(p, TRUE); |
| 1551 | Safefree(p); |
| 1552 | s = e; |
| 1553 | } |
| 1554 | else |
| 1555 | croak("No space allowed after -I"); |
| 1556 | return s; |
| 1557 | case 'l': |
| 1558 | minus_l = TRUE; |
| 1559 | s++; |
| 1560 | if (ors) |
| 1561 | Safefree(ors); |
| 1562 | if (isDIGIT(*s)) { |
| 1563 | ors = savepv("\n"); |
| 1564 | orslen = 1; |
| 1565 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); |
| 1566 | s += numlen; |
| 1567 | } |
| 1568 | else { |
| 1569 | dTHR; |
| 1570 | if (RsPARA(nrs)) { |
| 1571 | ors = "\n\n"; |
| 1572 | orslen = 2; |
| 1573 | } |
| 1574 | else |
| 1575 | ors = SvPV(nrs, orslen); |
| 1576 | ors = savepvn(ors, orslen); |
| 1577 | } |
| 1578 | return s; |
| 1579 | case 'M': |
| 1580 | forbid_setid("-M"); /* XXX ? */ |
| 1581 | /* FALL THROUGH */ |
| 1582 | case 'm': |
| 1583 | forbid_setid("-m"); /* XXX ? */ |
| 1584 | if (*++s) { |
| 1585 | char *start; |
| 1586 | SV *sv; |
| 1587 | char *use = "use "; |
| 1588 | /* -M-foo == 'no foo' */ |
| 1589 | if (*s == '-') { use = "no "; ++s; } |
| 1590 | sv = newSVpv(use,0); |
| 1591 | start = s; |
| 1592 | /* We allow -M'Module qw(Foo Bar)' */ |
| 1593 | while(isALNUM(*s) || *s==':') ++s; |
| 1594 | if (*s != '=') { |
| 1595 | sv_catpv(sv, start); |
| 1596 | if (*(start-1) == 'm') { |
| 1597 | if (*s != '\0') |
| 1598 | croak("Can't use '%c' after -mname", *s); |
| 1599 | sv_catpv( sv, " ()"); |
| 1600 | } |
| 1601 | } else { |
| 1602 | sv_catpvn(sv, start, s-start); |
| 1603 | sv_catpv(sv, " split(/,/,q{"); |
| 1604 | sv_catpv(sv, ++s); |
| 1605 | sv_catpv(sv, "})"); |
| 1606 | } |
| 1607 | s += strlen(s); |
| 1608 | if (preambleav == NULL) |
| 1609 | preambleav = newAV(); |
| 1610 | av_push(preambleav, sv); |
| 1611 | } |
| 1612 | else |
| 1613 | croak("No space allowed after -%c", *(s-1)); |
| 1614 | return s; |
| 1615 | case 'n': |
| 1616 | minus_n = TRUE; |
| 1617 | s++; |
| 1618 | return s; |
| 1619 | case 'p': |
| 1620 | minus_p = TRUE; |
| 1621 | s++; |
| 1622 | return s; |
| 1623 | case 's': |
| 1624 | forbid_setid("-s"); |
| 1625 | doswitches = TRUE; |
| 1626 | s++; |
| 1627 | return s; |
| 1628 | case 'T': |
| 1629 | if (!tainting) |
| 1630 | croak("Too late for \"-T\" option"); |
| 1631 | s++; |
| 1632 | return s; |
| 1633 | case 'u': |
| 1634 | do_undump = TRUE; |
| 1635 | s++; |
| 1636 | return s; |
| 1637 | case 'U': |
| 1638 | unsafe = TRUE; |
| 1639 | s++; |
| 1640 | return s; |
| 1641 | case 'v': |
| 1642 | #if defined(SUBVERSION) && SUBVERSION > 0 |
| 1643 | printf("\nThis is perl, version 5.%03d_%02d built for %s", |
| 1644 | PATCHLEVEL, SUBVERSION, ARCHNAME); |
| 1645 | #else |
| 1646 | printf("\nThis is perl, version %s built for %s", |
| 1647 | patchlevel, ARCHNAME); |
| 1648 | #endif |
| 1649 | #if defined(LOCAL_PATCH_COUNT) |
| 1650 | if (LOCAL_PATCH_COUNT > 0) |
| 1651 | printf("\n(with %d registered patch%s, see perl -V for more detail)", |
| 1652 | LOCAL_PATCH_COUNT, (LOCAL_PATCH_COUNT!=1) ? "es" : ""); |
| 1653 | #endif |
| 1654 | |
| 1655 | printf("\n\nCopyright 1987-1997, Larry Wall\n"); |
| 1656 | #ifdef MSDOS |
| 1657 | printf("\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
| 1658 | #endif |
| 1659 | #ifdef DJGPP |
| 1660 | printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"); |
| 1661 | printf("djgpp v2 port (perl5004) by Laszlo Molnar, 1997\n"); |
| 1662 | #endif |
| 1663 | #ifdef OS2 |
| 1664 | printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
| 1665 | "Version 5 port Copyright (c) 1994-1997, Andreas Kaiser, Ilya Zakharevich\n"); |
| 1666 | #endif |
| 1667 | #ifdef atarist |
| 1668 | printf("atariST series port, ++jrb bammi@cadence.com\n"); |
| 1669 | #endif |
| 1670 | printf("\n\ |
| 1671 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
| 1672 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n"); |
| 1673 | PerlProc_exit(0); |
| 1674 | case 'w': |
| 1675 | dowarn = TRUE; |
| 1676 | s++; |
| 1677 | return s; |
| 1678 | case '*': |
| 1679 | case ' ': |
| 1680 | if (s[1] == '-') /* Additional switches on #! line. */ |
| 1681 | return s+2; |
| 1682 | break; |
| 1683 | case '-': |
| 1684 | case 0: |
| 1685 | #ifdef WIN32 |
| 1686 | case '\r': |
| 1687 | #endif |
| 1688 | case '\n': |
| 1689 | case '\t': |
| 1690 | break; |
| 1691 | #ifdef ALTERNATE_SHEBANG |
| 1692 | case 'S': /* OS/2 needs -S on "extproc" line. */ |
| 1693 | break; |
| 1694 | #endif |
| 1695 | case 'P': |
| 1696 | if (preprocess) |
| 1697 | return s+1; |
| 1698 | /* FALL THROUGH */ |
| 1699 | default: |
| 1700 | croak("Can't emulate -%.1s on #! line",s); |
| 1701 | } |
| 1702 | return Nullch; |
| 1703 | } |
| 1704 | |
| 1705 | /* compliments of Tom Christiansen */ |
| 1706 | |
| 1707 | /* unexec() can be found in the Gnu emacs distribution */ |
| 1708 | |
| 1709 | void |
| 1710 | my_unexec(void) |
| 1711 | { |
| 1712 | #ifdef UNEXEC |
| 1713 | SV* prog; |
| 1714 | SV* file; |
| 1715 | int status; |
| 1716 | extern int etext; |
| 1717 | |
| 1718 | prog = newSVpv(BIN_EXP); |
| 1719 | sv_catpv(prog, "/perl"); |
| 1720 | file = newSVpv(origfilename); |
| 1721 | sv_catpv(file, ".perldump"); |
| 1722 | |
| 1723 | status = unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); |
| 1724 | if (status) |
| 1725 | PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n", |
| 1726 | SvPVX(prog), SvPVX(file)); |
| 1727 | PerlProc_exit(status); |
| 1728 | #else |
| 1729 | # ifdef VMS |
| 1730 | # include <lib$routines.h> |
| 1731 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ |
| 1732 | # else |
| 1733 | ABORT(); /* for use with undump */ |
| 1734 | # endif |
| 1735 | #endif |
| 1736 | } |
| 1737 | |
| 1738 | static void |
| 1739 | init_main_stash(void) |
| 1740 | { |
| 1741 | dTHR; |
| 1742 | GV *gv; |
| 1743 | |
| 1744 | /* Note that strtab is a rather special HV. Assumptions are made |
| 1745 | about not iterating on it, and not adding tie magic to it. |
| 1746 | It is properly deallocated in perl_destruct() */ |
| 1747 | strtab = newHV(); |
| 1748 | HvSHAREKEYS_off(strtab); /* mandatory */ |
| 1749 | Newz(506,((XPVHV*)SvANY(strtab))->xhv_array, |
| 1750 | sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char); |
| 1751 | |
| 1752 | curstash = defstash = newHV(); |
| 1753 | curstname = newSVpv("main",4); |
| 1754 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
| 1755 | SvREFCNT_dec(GvHV(gv)); |
| 1756 | GvHV(gv) = (HV*)SvREFCNT_inc(defstash); |
| 1757 | SvREADONLY_on(gv); |
| 1758 | HvNAME(defstash) = savepv("main"); |
| 1759 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
| 1760 | GvMULTI_on(incgv); |
| 1761 | defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
| 1762 | errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
| 1763 | GvMULTI_on(errgv); |
| 1764 | (void)form("%240s",""); /* Preallocate temp - for immediate signals. */ |
| 1765 | sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ |
| 1766 | sv_setpvn(ERRSV, "", 0); |
| 1767 | curstash = defstash; |
| 1768 | compiling.cop_stash = defstash; |
| 1769 | debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
| 1770 | globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV)); |
| 1771 | /* We must init $/ before switches are processed. */ |
| 1772 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); |
| 1773 | } |
| 1774 | |
| 1775 | #ifdef CAN_PROTOTYPE |
| 1776 | static void |
| 1777 | open_script(char *scriptname, bool dosearch, SV *sv) |
| 1778 | #else |
| 1779 | static void |
| 1780 | open_script(scriptname,dosearch,sv) |
| 1781 | char *scriptname; |
| 1782 | bool dosearch; |
| 1783 | SV *sv; |
| 1784 | #endif |
| 1785 | { |
| 1786 | dTHR; |
| 1787 | char *xfound = Nullch; |
| 1788 | char *xfailed = Nullch; |
| 1789 | register char *s; |
| 1790 | I32 len; |
| 1791 | int retval; |
| 1792 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) |
| 1793 | # define SEARCH_EXTS ".bat", ".cmd", NULL |
| 1794 | # define MAX_EXT_LEN 4 |
| 1795 | #endif |
| 1796 | #ifdef OS2 |
| 1797 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL |
| 1798 | # define MAX_EXT_LEN 4 |
| 1799 | #endif |
| 1800 | #ifdef VMS |
| 1801 | # define SEARCH_EXTS ".pl", ".com", NULL |
| 1802 | # define MAX_EXT_LEN 4 |
| 1803 | #endif |
| 1804 | /* additional extensions to try in each dir if scriptname not found */ |
| 1805 | #ifdef SEARCH_EXTS |
| 1806 | char *ext[] = { SEARCH_EXTS }; |
| 1807 | int extidx = 0, i = 0; |
| 1808 | char *curext = Nullch; |
| 1809 | #else |
| 1810 | # define MAX_EXT_LEN 0 |
| 1811 | #endif |
| 1812 | |
| 1813 | /* |
| 1814 | * If dosearch is true and if scriptname does not contain path |
| 1815 | * delimiters, search the PATH for scriptname. |
| 1816 | * |
| 1817 | * If SEARCH_EXTS is also defined, will look for each |
| 1818 | * scriptname{SEARCH_EXTS} whenever scriptname is not found |
| 1819 | * while searching the PATH. |
| 1820 | * |
| 1821 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search |
| 1822 | * proceeds as follows: |
| 1823 | * If DOSISH or VMSISH: |
| 1824 | * + look for ./scriptname{,.foo,.bar} |
| 1825 | * + search the PATH for scriptname{,.foo,.bar} |
| 1826 | * |
| 1827 | * If !DOSISH: |
| 1828 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note |
| 1829 | * this will not look in '.' if it's not in the PATH) |
| 1830 | */ |
| 1831 | |
| 1832 | #ifdef VMS |
| 1833 | # ifdef ALWAYS_DEFTYPES |
| 1834 | len = strlen(scriptname); |
| 1835 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { |
| 1836 | int hasdir, idx = 0, deftypes = 1; |
| 1837 | bool seen_dot = 1; |
| 1838 | |
| 1839 | hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ; |
| 1840 | # else |
| 1841 | if (dosearch) { |
| 1842 | int hasdir, idx = 0, deftypes = 1; |
| 1843 | bool seen_dot = 1; |
| 1844 | |
| 1845 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; |
| 1846 | # endif |
| 1847 | /* The first time through, just add SEARCH_EXTS to whatever we |
| 1848 | * already have, so we can check for default file types. */ |
| 1849 | while (deftypes || |
| 1850 | (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) ) |
| 1851 | { |
| 1852 | if (deftypes) { |
| 1853 | deftypes = 0; |
| 1854 | *tokenbuf = '\0'; |
| 1855 | } |
| 1856 | if ((strlen(tokenbuf) + strlen(scriptname) |
| 1857 | + MAX_EXT_LEN) >= sizeof tokenbuf) |
| 1858 | continue; /* don't search dir with too-long name */ |
| 1859 | strcat(tokenbuf, scriptname); |
| 1860 | #else /* !VMS */ |
| 1861 | |
| 1862 | #ifdef DOSISH |
| 1863 | if (strEQ(scriptname, "-")) |
| 1864 | dosearch = 0; |
| 1865 | if (dosearch) { /* Look in '.' first. */ |
| 1866 | char *cur = scriptname; |
| 1867 | #ifdef SEARCH_EXTS |
| 1868 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ |
| 1869 | while (ext[i]) |
| 1870 | if (strEQ(ext[i++],curext)) { |
| 1871 | extidx = -1; /* already has an ext */ |
| 1872 | break; |
| 1873 | } |
| 1874 | do { |
| 1875 | #endif |
| 1876 | DEBUG_p(PerlIO_printf(Perl_debug_log, |
| 1877 | "Looking for %s\n",cur)); |
| 1878 | if (Stat(cur,&statbuf) >= 0) { |
| 1879 | dosearch = 0; |
| 1880 | scriptname = cur; |
| 1881 | #ifdef SEARCH_EXTS |
| 1882 | break; |
| 1883 | #endif |
| 1884 | } |
| 1885 | #ifdef SEARCH_EXTS |
| 1886 | if (cur == scriptname) { |
| 1887 | len = strlen(scriptname); |
| 1888 | if (len+MAX_EXT_LEN+1 >= sizeof(tokenbuf)) |
| 1889 | break; |
| 1890 | cur = strcpy(tokenbuf, scriptname); |
| 1891 | } |
| 1892 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ |
| 1893 | && strcpy(tokenbuf+len, ext[extidx++])); |
| 1894 | #endif |
| 1895 | } |
| 1896 | #endif |
| 1897 | |
| 1898 | if (dosearch && !strchr(scriptname, '/') |
| 1899 | #ifdef DOSISH |
| 1900 | && !strchr(scriptname, '\\') |
| 1901 | #endif |
| 1902 | && (s = PerlEnv_getenv("PATH"))) { |
| 1903 | bool seen_dot = 0; |
| 1904 | |
| 1905 | bufend = s + strlen(s); |
| 1906 | while (s < bufend) { |
| 1907 | #if defined(atarist) || defined(DOSISH) |
| 1908 | for (len = 0; *s |
| 1909 | # ifdef atarist |
| 1910 | && *s != ',' |
| 1911 | # endif |
| 1912 | && *s != ';'; len++, s++) { |
| 1913 | if (len < sizeof tokenbuf) |
| 1914 | tokenbuf[len] = *s; |
| 1915 | } |
| 1916 | if (len < sizeof tokenbuf) |
| 1917 | tokenbuf[len] = '\0'; |
| 1918 | #else /* ! (atarist || DOSISH) */ |
| 1919 | s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf, s, bufend, |
| 1920 | ':', |
| 1921 | &len); |
| 1922 | #endif /* ! (atarist || DOSISH) */ |
| 1923 | if (s < bufend) |
| 1924 | s++; |
| 1925 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tokenbuf) |
| 1926 | continue; /* don't search dir with too-long name */ |
| 1927 | if (len |
| 1928 | #if defined(atarist) || defined(DOSISH) |
| 1929 | && tokenbuf[len - 1] != '/' |
| 1930 | && tokenbuf[len - 1] != '\\' |
| 1931 | #endif |
| 1932 | ) |
| 1933 | tokenbuf[len++] = '/'; |
| 1934 | if (len == 2 && tokenbuf[0] == '.') |
| 1935 | seen_dot = 1; |
| 1936 | (void)strcpy(tokenbuf + len, scriptname); |
| 1937 | #endif /* !VMS */ |
| 1938 | |
| 1939 | #ifdef SEARCH_EXTS |
| 1940 | len = strlen(tokenbuf); |
| 1941 | if (extidx > 0) /* reset after previous loop */ |
| 1942 | extidx = 0; |
| 1943 | do { |
| 1944 | #endif |
| 1945 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf)); |
| 1946 | retval = Stat(tokenbuf,&statbuf); |
| 1947 | #ifdef SEARCH_EXTS |
| 1948 | } while ( retval < 0 /* not there */ |
| 1949 | && extidx>=0 && ext[extidx] /* try an extension? */ |
| 1950 | && strcpy(tokenbuf+len, ext[extidx++]) |
| 1951 | ); |
| 1952 | #endif |
| 1953 | if (retval < 0) |
| 1954 | continue; |
| 1955 | if (S_ISREG(statbuf.st_mode) |
| 1956 | && cando(S_IRUSR,TRUE,&statbuf) |
| 1957 | #ifndef DOSISH |
| 1958 | && cando(S_IXUSR,TRUE,&statbuf) |
| 1959 | #endif |
| 1960 | ) |
| 1961 | { |
| 1962 | xfound = tokenbuf; /* bingo! */ |
| 1963 | break; |
| 1964 | } |
| 1965 | if (!xfailed) |
| 1966 | xfailed = savepv(tokenbuf); |
| 1967 | } |
| 1968 | #ifndef DOSISH |
| 1969 | if (!xfound && !seen_dot && !xfailed && (Stat(scriptname,&statbuf) < 0)) |
| 1970 | #endif |
| 1971 | seen_dot = 1; /* Disable message. */ |
| 1972 | if (!xfound) |
| 1973 | croak("Can't %s %s%s%s", |
| 1974 | (xfailed ? "execute" : "find"), |
| 1975 | (xfailed ? xfailed : scriptname), |
| 1976 | (xfailed ? "" : " on PATH"), |
| 1977 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); |
| 1978 | if (xfailed) |
| 1979 | Safefree(xfailed); |
| 1980 | scriptname = xfound; |
| 1981 | } |
| 1982 | |
| 1983 | if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { |
| 1984 | char *s = scriptname + 8; |
| 1985 | fdscript = atoi(s); |
| 1986 | while (isDIGIT(*s)) |
| 1987 | s++; |
| 1988 | if (*s) |
| 1989 | scriptname = s + 1; |
| 1990 | } |
| 1991 | else |
| 1992 | fdscript = -1; |
| 1993 | origfilename = savepv(e_tmpname ? "-e" : scriptname); |
| 1994 | curcop->cop_filegv = gv_fetchfile(origfilename); |
| 1995 | if (strEQ(origfilename,"-")) |
| 1996 | scriptname = ""; |
| 1997 | if (fdscript >= 0) { |
| 1998 | rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE); |
| 1999 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2000 | if (rsfp) |
| 2001 | fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 2002 | #endif |
| 2003 | } |
| 2004 | else if (preprocess) { |
| 2005 | char *cpp_cfg = CPPSTDIN; |
| 2006 | SV *cpp = NEWSV(0,0); |
| 2007 | SV *cmd = NEWSV(0,0); |
| 2008 | |
| 2009 | if (strEQ(cpp_cfg, "cppstdin")) |
| 2010 | sv_catpvf(cpp, "%s/", BIN_EXP); |
| 2011 | sv_catpv(cpp, cpp_cfg); |
| 2012 | |
| 2013 | sv_catpv(sv,"-I"); |
| 2014 | sv_catpv(sv,PRIVLIB_EXP); |
| 2015 | |
| 2016 | #ifdef MSDOS |
| 2017 | sv_setpvf(cmd, "\ |
| 2018 | sed %s -e \"/^[^#]/b\" \ |
| 2019 | -e \"/^#[ ]*include[ ]/b\" \ |
| 2020 | -e \"/^#[ ]*define[ ]/b\" \ |
| 2021 | -e \"/^#[ ]*if[ ]/b\" \ |
| 2022 | -e \"/^#[ ]*ifdef[ ]/b\" \ |
| 2023 | -e \"/^#[ ]*ifndef[ ]/b\" \ |
| 2024 | -e \"/^#[ ]*else/b\" \ |
| 2025 | -e \"/^#[ ]*elif[ ]/b\" \ |
| 2026 | -e \"/^#[ ]*undef[ ]/b\" \ |
| 2027 | -e \"/^#[ ]*endif/b\" \ |
| 2028 | -e \"s/^#.*//\" \ |
| 2029 | %s | %_ -C %_ %s", |
| 2030 | (doextract ? "-e \"1,/^#/d\n\"" : ""), |
| 2031 | #else |
| 2032 | sv_setpvf(cmd, "\ |
| 2033 | %s %s -e '/^[^#]/b' \ |
| 2034 | -e '/^#[ ]*include[ ]/b' \ |
| 2035 | -e '/^#[ ]*define[ ]/b' \ |
| 2036 | -e '/^#[ ]*if[ ]/b' \ |
| 2037 | -e '/^#[ ]*ifdef[ ]/b' \ |
| 2038 | -e '/^#[ ]*ifndef[ ]/b' \ |
| 2039 | -e '/^#[ ]*else/b' \ |
| 2040 | -e '/^#[ ]*elif[ ]/b' \ |
| 2041 | -e '/^#[ ]*undef[ ]/b' \ |
| 2042 | -e '/^#[ ]*endif/b' \ |
| 2043 | -e 's/^[ ]*#.*//' \ |
| 2044 | %s | %_ -C %_ %s", |
| 2045 | #ifdef LOC_SED |
| 2046 | LOC_SED, |
| 2047 | #else |
| 2048 | "sed", |
| 2049 | #endif |
| 2050 | (doextract ? "-e '1,/^#/d\n'" : ""), |
| 2051 | #endif |
| 2052 | scriptname, cpp, sv, CPPMINUS); |
| 2053 | doextract = FALSE; |
| 2054 | #ifdef IAMSUID /* actually, this is caught earlier */ |
| 2055 | if (euid != uid && !euid) { /* if running suidperl */ |
| 2056 | #ifdef HAS_SETEUID |
| 2057 | (void)seteuid(uid); /* musn't stay setuid root */ |
| 2058 | #else |
| 2059 | #ifdef HAS_SETREUID |
| 2060 | (void)setreuid((Uid_t)-1, uid); |
| 2061 | #else |
| 2062 | #ifdef HAS_SETRESUID |
| 2063 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); |
| 2064 | #else |
| 2065 | setuid(uid); |
| 2066 | #endif |
| 2067 | #endif |
| 2068 | #endif |
| 2069 | if (geteuid() != uid) |
| 2070 | croak("Can't do seteuid!\n"); |
| 2071 | } |
| 2072 | #endif /* IAMSUID */ |
| 2073 | rsfp = PerlProc_popen(SvPVX(cmd), "r"); |
| 2074 | SvREFCNT_dec(cmd); |
| 2075 | SvREFCNT_dec(cpp); |
| 2076 | } |
| 2077 | else if (!*scriptname) { |
| 2078 | forbid_setid("program input from stdin"); |
| 2079 | rsfp = PerlIO_stdin(); |
| 2080 | } |
| 2081 | else { |
| 2082 | rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); |
| 2083 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2084 | if (rsfp) |
| 2085 | fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ |
| 2086 | #endif |
| 2087 | } |
| 2088 | if (e_tmpname) { |
| 2089 | e_fp = rsfp; |
| 2090 | } |
| 2091 | if (!rsfp) { |
| 2092 | #ifdef DOSUID |
| 2093 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
| 2094 | if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
| 2095 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
| 2096 | /* try again */ |
| 2097 | PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv); |
| 2098 | croak("Can't do setuid\n"); |
| 2099 | } |
| 2100 | #endif |
| 2101 | #endif |
| 2102 | croak("Can't open perl script \"%s\": %s\n", |
| 2103 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
| 2104 | } |
| 2105 | } |
| 2106 | |
| 2107 | static void |
| 2108 | validate_suid(char *validarg, char *scriptname) |
| 2109 | { |
| 2110 | int which; |
| 2111 | |
| 2112 | /* do we need to emulate setuid on scripts? */ |
| 2113 | |
| 2114 | /* This code is for those BSD systems that have setuid #! scripts disabled |
| 2115 | * in the kernel because of a security problem. Merely defining DOSUID |
| 2116 | * in perl will not fix that problem, but if you have disabled setuid |
| 2117 | * scripts in the kernel, this will attempt to emulate setuid and setgid |
| 2118 | * on scripts that have those now-otherwise-useless bits set. The setuid |
| 2119 | * root version must be called suidperl or sperlN.NNN. If regular perl |
| 2120 | * discovers that it has opened a setuid script, it calls suidperl with |
| 2121 | * the same argv that it had. If suidperl finds that the script it has |
| 2122 | * just opened is NOT setuid root, it sets the effective uid back to the |
| 2123 | * uid. We don't just make perl setuid root because that loses the |
| 2124 | * effective uid we had before invoking perl, if it was different from the |
| 2125 | * uid. |
| 2126 | * |
| 2127 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must |
| 2128 | * be defined in suidperl only. suidperl must be setuid root. The |
| 2129 | * Configure script will set this up for you if you want it. |
| 2130 | */ |
| 2131 | |
| 2132 | #ifdef DOSUID |
| 2133 | dTHR; |
| 2134 | char *s, *s2; |
| 2135 | |
| 2136 | if (PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ |
| 2137 | croak("Can't stat script \"%s\"",origfilename); |
| 2138 | if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { |
| 2139 | I32 len; |
| 2140 | |
| 2141 | #ifdef IAMSUID |
| 2142 | #ifndef HAS_SETREUID |
| 2143 | /* On this access check to make sure the directories are readable, |
| 2144 | * there is actually a small window that the user could use to make |
| 2145 | * filename point to an accessible directory. So there is a faint |
| 2146 | * chance that someone could execute a setuid script down in a |
| 2147 | * non-accessible directory. I don't know what to do about that. |
| 2148 | * But I don't think it's too important. The manual lies when |
| 2149 | * it says access() is useful in setuid programs. |
| 2150 | */ |
| 2151 | if (PerlLIO_access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
| 2152 | croak("Permission denied"); |
| 2153 | #else |
| 2154 | /* If we can swap euid and uid, then we can determine access rights |
| 2155 | * with a simple stat of the file, and then compare device and |
| 2156 | * inode to make sure we did stat() on the same file we opened. |
| 2157 | * Then we just have to make sure he or she can execute it. |
| 2158 | */ |
| 2159 | { |
| 2160 | struct stat tmpstatbuf; |
| 2161 | |
| 2162 | if ( |
| 2163 | #ifdef HAS_SETREUID |
| 2164 | setreuid(euid,uid) < 0 |
| 2165 | #else |
| 2166 | # if HAS_SETRESUID |
| 2167 | setresuid(euid,uid,(Uid_t)-1) < 0 |
| 2168 | # endif |
| 2169 | #endif |
| 2170 | || getuid() != euid || geteuid() != uid) |
| 2171 | croak("Can't swap uid and euid"); /* really paranoid */ |
| 2172 | if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) |
| 2173 | croak("Permission denied"); /* testing full pathname here */ |
| 2174 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
| 2175 | tmpstatbuf.st_ino != statbuf.st_ino) { |
| 2176 | (void)PerlIO_close(rsfp); |
| 2177 | if (rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */ |
| 2178 | PerlIO_printf(rsfp, |
| 2179 | "User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ |
| 2180 | (Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n", |
| 2181 | (long)uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, |
| 2182 | (long)statbuf.st_dev, (long)statbuf.st_ino, |
| 2183 | SvPVX(GvSV(curcop->cop_filegv)), |
| 2184 | (long)statbuf.st_uid, (long)statbuf.st_gid); |
| 2185 | (void)PerlProc_pclose(rsfp); |
| 2186 | } |
| 2187 | croak("Permission denied\n"); |
| 2188 | } |
| 2189 | if ( |
| 2190 | #ifdef HAS_SETREUID |
| 2191 | setreuid(uid,euid) < 0 |
| 2192 | #else |
| 2193 | # if defined(HAS_SETRESUID) |
| 2194 | setresuid(uid,euid,(Uid_t)-1) < 0 |
| 2195 | # endif |
| 2196 | #endif |
| 2197 | || getuid() != uid || geteuid() != euid) |
| 2198 | croak("Can't reswap uid and euid"); |
| 2199 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
| 2200 | croak("Permission denied\n"); |
| 2201 | } |
| 2202 | #endif /* HAS_SETREUID */ |
| 2203 | #endif /* IAMSUID */ |
| 2204 | |
| 2205 | if (!S_ISREG(statbuf.st_mode)) |
| 2206 | croak("Permission denied"); |
| 2207 | if (statbuf.st_mode & S_IWOTH) |
| 2208 | croak("Setuid/gid script is writable by world"); |
| 2209 | doswitches = FALSE; /* -s is insecure in suid */ |
| 2210 | curcop->cop_line++; |
| 2211 | if (sv_gets(linestr, rsfp, 0) == Nullch || |
| 2212 | strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */ |
| 2213 | croak("No #! line"); |
| 2214 | s = SvPV(linestr,na)+2; |
| 2215 | if (*s == ' ') s++; |
| 2216 | while (!isSPACE(*s)) s++; |
| 2217 | for (s2 = s; (s2 > SvPV(linestr,na)+2 && |
| 2218 | (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; |
| 2219 | if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
| 2220 | croak("Not a perl script"); |
| 2221 | while (*s == ' ' || *s == '\t') s++; |
| 2222 | /* |
| 2223 | * #! arg must be what we saw above. They can invoke it by |
| 2224 | * mentioning suidperl explicitly, but they may not add any strange |
| 2225 | * arguments beyond what #! says if they do invoke suidperl that way. |
| 2226 | */ |
| 2227 | len = strlen(validarg); |
| 2228 | if (strEQ(validarg," PHOOEY ") || |
| 2229 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
| 2230 | croak("Args must match #! line"); |
| 2231 | |
| 2232 | #ifndef IAMSUID |
| 2233 | if (euid != uid && (statbuf.st_mode & S_ISUID) && |
| 2234 | euid == statbuf.st_uid) |
| 2235 | if (!do_undump) |
| 2236 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2237 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2238 | #endif /* IAMSUID */ |
| 2239 | |
| 2240 | if (euid) { /* oops, we're not the setuid root perl */ |
| 2241 | (void)PerlIO_close(rsfp); |
| 2242 | #ifndef IAMSUID |
| 2243 | /* try again */ |
| 2244 | PerlProc_execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv); |
| 2245 | #endif |
| 2246 | croak("Can't do setuid\n"); |
| 2247 | } |
| 2248 | |
| 2249 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
| 2250 | #ifdef HAS_SETEGID |
| 2251 | (void)setegid(statbuf.st_gid); |
| 2252 | #else |
| 2253 | #ifdef HAS_SETREGID |
| 2254 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
| 2255 | #else |
| 2256 | #ifdef HAS_SETRESGID |
| 2257 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); |
| 2258 | #else |
| 2259 | setgid(statbuf.st_gid); |
| 2260 | #endif |
| 2261 | #endif |
| 2262 | #endif |
| 2263 | if (getegid() != statbuf.st_gid) |
| 2264 | croak("Can't do setegid!\n"); |
| 2265 | } |
| 2266 | if (statbuf.st_mode & S_ISUID) { |
| 2267 | if (statbuf.st_uid != euid) |
| 2268 | #ifdef HAS_SETEUID |
| 2269 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
| 2270 | #else |
| 2271 | #ifdef HAS_SETREUID |
| 2272 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
| 2273 | #else |
| 2274 | #ifdef HAS_SETRESUID |
| 2275 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); |
| 2276 | #else |
| 2277 | setuid(statbuf.st_uid); |
| 2278 | #endif |
| 2279 | #endif |
| 2280 | #endif |
| 2281 | if (geteuid() != statbuf.st_uid) |
| 2282 | croak("Can't do seteuid!\n"); |
| 2283 | } |
| 2284 | else if (uid) { /* oops, mustn't run as root */ |
| 2285 | #ifdef HAS_SETEUID |
| 2286 | (void)seteuid((Uid_t)uid); |
| 2287 | #else |
| 2288 | #ifdef HAS_SETREUID |
| 2289 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
| 2290 | #else |
| 2291 | #ifdef HAS_SETRESUID |
| 2292 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); |
| 2293 | #else |
| 2294 | setuid((Uid_t)uid); |
| 2295 | #endif |
| 2296 | #endif |
| 2297 | #endif |
| 2298 | if (geteuid() != uid) |
| 2299 | croak("Can't do seteuid!\n"); |
| 2300 | } |
| 2301 | init_ids(); |
| 2302 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
| 2303 | croak("Permission denied\n"); /* they can't do this */ |
| 2304 | } |
| 2305 | #ifdef IAMSUID |
| 2306 | else if (preprocess) |
| 2307 | croak("-P not allowed for setuid/setgid script\n"); |
| 2308 | else if (fdscript >= 0) |
| 2309 | croak("fd script not allowed in suidperl\n"); |
| 2310 | else |
| 2311 | croak("Script is not setuid/setgid in suidperl\n"); |
| 2312 | |
| 2313 | /* We absolutely must clear out any saved ids here, so we */ |
| 2314 | /* exec the real perl, substituting fd script for scriptname. */ |
| 2315 | /* (We pass script name as "subdir" of fd, which perl will grok.) */ |
| 2316 | PerlIO_rewind(rsfp); |
| 2317 | PerlLIO_lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */ |
| 2318 | for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ; |
| 2319 | if (!origargv[which]) |
| 2320 | croak("Permission denied"); |
| 2321 | origargv[which] = savepv(form("/dev/fd/%d/%s", |
| 2322 | PerlIO_fileno(rsfp), origargv[which])); |
| 2323 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2324 | fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
| 2325 | #endif |
| 2326 | PerlProc_execv(form("%s/perl%s", BIN_EXP, patchlevel), origargv); /* try again */ |
| 2327 | croak("Can't do setuid\n"); |
| 2328 | #endif /* IAMSUID */ |
| 2329 | #else /* !DOSUID */ |
| 2330 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
| 2331 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 2332 | dTHR; |
| 2333 | PerlLIO_fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
| 2334 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
| 2335 | || |
| 2336 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) |
| 2337 | ) |
| 2338 | if (!do_undump) |
| 2339 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 2340 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 2341 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 2342 | /* not set-id, must be wrapped */ |
| 2343 | } |
| 2344 | #endif /* DOSUID */ |
| 2345 | } |
| 2346 | |
| 2347 | static void |
| 2348 | find_beginning(void) |
| 2349 | { |
| 2350 | register char *s, *s2; |
| 2351 | |
| 2352 | /* skip forward in input to the real script? */ |
| 2353 | |
| 2354 | forbid_setid("-x"); |
| 2355 | while (doextract) { |
| 2356 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
| 2357 | croak("No Perl script found in input\n"); |
| 2358 | if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { |
| 2359 | PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */ |
| 2360 | doextract = FALSE; |
| 2361 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
| 2362 | s2 = s; |
| 2363 | while (*s == ' ' || *s == '\t') s++; |
| 2364 | if (*s++ == '-') { |
| 2365 | while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; |
| 2366 | if (strnEQ(s2-4,"perl",4)) |
| 2367 | /*SUPPRESS 530*/ |
| 2368 | while (s = moreswitches(s)) ; |
| 2369 | } |
| 2370 | if (cddir && PerlDir_chdir(cddir) < 0) |
| 2371 | croak("Can't chdir to %s",cddir); |
| 2372 | } |
| 2373 | } |
| 2374 | } |
| 2375 | |
| 2376 | static void |
| 2377 | init_ids(void) |
| 2378 | { |
| 2379 | uid = (int)getuid(); |
| 2380 | euid = (int)geteuid(); |
| 2381 | gid = (int)getgid(); |
| 2382 | egid = (int)getegid(); |
| 2383 | #ifdef VMS |
| 2384 | uid |= gid << 16; |
| 2385 | euid |= egid << 16; |
| 2386 | #endif |
| 2387 | tainting |= (uid && (euid != uid || egid != gid)); |
| 2388 | } |
| 2389 | |
| 2390 | static void |
| 2391 | forbid_setid(char *s) |
| 2392 | { |
| 2393 | if (euid != uid) |
| 2394 | croak("No %s allowed while running setuid", s); |
| 2395 | if (egid != gid) |
| 2396 | croak("No %s allowed while running setgid", s); |
| 2397 | } |
| 2398 | |
| 2399 | static void |
| 2400 | init_debugger(void) |
| 2401 | { |
| 2402 | dTHR; |
| 2403 | curstash = debstash; |
| 2404 | dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
| 2405 | AvREAL_off(dbargs); |
| 2406 | DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
| 2407 | DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); |
| 2408 | DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
| 2409 | DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); |
| 2410 | sv_setiv(DBsingle, 0); |
| 2411 | DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); |
| 2412 | sv_setiv(DBtrace, 0); |
| 2413 | DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); |
| 2414 | sv_setiv(DBsignal, 0); |
| 2415 | curstash = defstash; |
| 2416 | } |
| 2417 | |
| 2418 | void |
| 2419 | init_stacks(ARGSproto) |
| 2420 | { |
| 2421 | curstack = newAV(); |
| 2422 | mainstack = curstack; /* remember in case we switch stacks */ |
| 2423 | AvREAL_off(curstack); /* not a real array */ |
| 2424 | av_extend(curstack,127); |
| 2425 | |
| 2426 | stack_base = AvARRAY(curstack); |
| 2427 | stack_sp = stack_base; |
| 2428 | stack_max = stack_base + 127; |
| 2429 | |
| 2430 | cxstack_max = 8192 / sizeof(PERL_CONTEXT) - 2; /* Use most of 8K. */ |
| 2431 | New(50,cxstack,cxstack_max + 1,PERL_CONTEXT); |
| 2432 | cxstack_ix = -1; |
| 2433 | |
| 2434 | New(50,tmps_stack,128,SV*); |
| 2435 | tmps_floor = -1; |
| 2436 | tmps_ix = -1; |
| 2437 | tmps_max = 128; |
| 2438 | |
| 2439 | /* |
| 2440 | * The following stacks almost certainly should be per-interpreter, |
| 2441 | * but for now they're not. XXX |
| 2442 | */ |
| 2443 | |
| 2444 | if (markstack) { |
| 2445 | markstack_ptr = markstack; |
| 2446 | } else { |
| 2447 | New(54,markstack,64,I32); |
| 2448 | markstack_ptr = markstack; |
| 2449 | markstack_max = markstack + 64; |
| 2450 | } |
| 2451 | |
| 2452 | if (scopestack) { |
| 2453 | scopestack_ix = 0; |
| 2454 | } else { |
| 2455 | New(54,scopestack,32,I32); |
| 2456 | scopestack_ix = 0; |
| 2457 | scopestack_max = 32; |
| 2458 | } |
| 2459 | |
| 2460 | if (savestack) { |
| 2461 | savestack_ix = 0; |
| 2462 | } else { |
| 2463 | New(54,savestack,128,ANY); |
| 2464 | savestack_ix = 0; |
| 2465 | savestack_max = 128; |
| 2466 | } |
| 2467 | |
| 2468 | if (retstack) { |
| 2469 | retstack_ix = 0; |
| 2470 | } else { |
| 2471 | New(54,retstack,16,OP*); |
| 2472 | retstack_ix = 0; |
| 2473 | retstack_max = 16; |
| 2474 | } |
| 2475 | } |
| 2476 | |
| 2477 | static void |
| 2478 | nuke_stacks(void) |
| 2479 | { |
| 2480 | dTHR; |
| 2481 | Safefree(cxstack); |
| 2482 | Safefree(tmps_stack); |
| 2483 | DEBUG( { |
| 2484 | Safefree(debname); |
| 2485 | Safefree(debdelim); |
| 2486 | } ) |
| 2487 | } |
| 2488 | |
| 2489 | static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
| 2490 | |
| 2491 | static void |
| 2492 | init_lexer(void) |
| 2493 | { |
| 2494 | tmpfp = rsfp; |
| 2495 | rsfp = Nullfp; |
| 2496 | lex_start(linestr); |
| 2497 | rsfp = tmpfp; |
| 2498 | subname = newSVpv("main",4); |
| 2499 | } |
| 2500 | |
| 2501 | static void |
| 2502 | init_predump_symbols(void) |
| 2503 | { |
| 2504 | dTHR; |
| 2505 | GV *tmpgv; |
| 2506 | GV *othergv; |
| 2507 | |
| 2508 | sv_setpvn(perl_get_sv("\"", TRUE), " ", 1); |
| 2509 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
| 2510 | GvMULTI_on(stdingv); |
| 2511 | IoIFP(GvIOp(stdingv)) = PerlIO_stdin(); |
| 2512 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
| 2513 | GvMULTI_on(tmpgv); |
| 2514 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); |
| 2515 | |
| 2516 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
| 2517 | GvMULTI_on(tmpgv); |
| 2518 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout(); |
| 2519 | setdefout(tmpgv); |
| 2520 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
| 2521 | GvMULTI_on(tmpgv); |
| 2522 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); |
| 2523 | |
| 2524 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
| 2525 | GvMULTI_on(othergv); |
| 2526 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr(); |
| 2527 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
| 2528 | GvMULTI_on(tmpgv); |
| 2529 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
| 2530 | |
| 2531 | statname = NEWSV(66,0); /* last filename we did stat on */ |
| 2532 | |
| 2533 | if (!osname) |
| 2534 | osname = savepv(OSNAME); |
| 2535 | } |
| 2536 | |
| 2537 | static void |
| 2538 | init_postdump_symbols(register int argc, register char **argv, register char **env) |
| 2539 | { |
| 2540 | dTHR; |
| 2541 | char *s; |
| 2542 | SV *sv; |
| 2543 | GV* tmpgv; |
| 2544 | |
| 2545 | argc--,argv++; /* skip name of script */ |
| 2546 | if (doswitches) { |
| 2547 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| 2548 | if (!argv[0][1]) |
| 2549 | break; |
| 2550 | if (argv[0][1] == '-') { |
| 2551 | argc--,argv++; |
| 2552 | break; |
| 2553 | } |
| 2554 | if (s = strchr(argv[0], '=')) { |
| 2555 | *s++ = '\0'; |
| 2556 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
| 2557 | } |
| 2558 | else |
| 2559 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
| 2560 | } |
| 2561 | } |
| 2562 | toptarget = NEWSV(0,0); |
| 2563 | sv_upgrade(toptarget, SVt_PVFM); |
| 2564 | sv_setpvn(toptarget, "", 0); |
| 2565 | bodytarget = NEWSV(0,0); |
| 2566 | sv_upgrade(bodytarget, SVt_PVFM); |
| 2567 | sv_setpvn(bodytarget, "", 0); |
| 2568 | formtarget = bodytarget; |
| 2569 | |
| 2570 | TAINT; |
| 2571 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
| 2572 | sv_setpv(GvSV(tmpgv),origfilename); |
| 2573 | magicname("0", "0", 1); |
| 2574 | } |
| 2575 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
| 2576 | sv_setpv(GvSV(tmpgv),origargv[0]); |
| 2577 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
| 2578 | GvMULTI_on(argvgv); |
| 2579 | (void)gv_AVadd(argvgv); |
| 2580 | av_clear(GvAVn(argvgv)); |
| 2581 | for (; argc > 0; argc--,argv++) { |
| 2582 | av_push(GvAVn(argvgv),newSVpv(argv[0],0)); |
| 2583 | } |
| 2584 | } |
| 2585 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
| 2586 | HV *hv; |
| 2587 | GvMULTI_on(envgv); |
| 2588 | hv = GvHVn(envgv); |
| 2589 | hv_magic(hv, envgv, 'E'); |
| 2590 | #ifndef VMS /* VMS doesn't have environ array */ |
| 2591 | /* Note that if the supplied env parameter is actually a copy |
| 2592 | of the global environ then it may now point to free'd memory |
| 2593 | if the environment has been modified since. To avoid this |
| 2594 | problem we treat env==NULL as meaning 'use the default' |
| 2595 | */ |
| 2596 | if (!env) |
| 2597 | env = environ; |
| 2598 | if (env != environ) |
| 2599 | environ[0] = Nullch; |
| 2600 | for (; *env; env++) { |
| 2601 | if (!(s = strchr(*env,'='))) |
| 2602 | continue; |
| 2603 | *s++ = '\0'; |
| 2604 | #if defined(WIN32) || defined(MSDOS) |
| 2605 | (void)strupr(*env); |
| 2606 | #endif |
| 2607 | sv = newSVpv(s--,0); |
| 2608 | (void)hv_store(hv, *env, s - *env, sv, 0); |
| 2609 | *s = '='; |
| 2610 | #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV) |
| 2611 | /* Sins of the RTL. See note in my_setenv(). */ |
| 2612 | (void)PerlEnv_putenv(savepv(*env)); |
| 2613 | #endif |
| 2614 | } |
| 2615 | #endif |
| 2616 | #ifdef DYNAMIC_ENV_FETCH |
| 2617 | HvNAME(hv) = savepv(ENV_HV_NAME); |
| 2618 | #endif |
| 2619 | } |
| 2620 | TAINT_NOT; |
| 2621 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
| 2622 | sv_setiv(GvSV(tmpgv), (IV)getpid()); |
| 2623 | } |
| 2624 | |
| 2625 | static void |
| 2626 | init_perllib(void) |
| 2627 | { |
| 2628 | char *s; |
| 2629 | if (!tainting) { |
| 2630 | #ifndef VMS |
| 2631 | s = PerlEnv_getenv("PERL5LIB"); |
| 2632 | if (s) |
| 2633 | incpush(s, TRUE); |
| 2634 | else |
| 2635 | incpush(PerlEnv_getenv("PERLLIB"), FALSE); |
| 2636 | #else /* VMS */ |
| 2637 | /* Treat PERL5?LIB as a possible search list logical name -- the |
| 2638 | * "natural" VMS idiom for a Unix path string. We allow each |
| 2639 | * element to be a set of |-separated directories for compatibility. |
| 2640 | */ |
| 2641 | char buf[256]; |
| 2642 | int idx = 0; |
| 2643 | if (my_trnlnm("PERL5LIB",buf,0)) |
| 2644 | do { incpush(buf,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); |
| 2645 | else |
| 2646 | while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE); |
| 2647 | #endif /* VMS */ |
| 2648 | } |
| 2649 | |
| 2650 | /* Use the ~-expanded versions of APPLLIB (undocumented), |
| 2651 | ARCHLIB PRIVLIB SITEARCH SITELIB and OLDARCHLIB |
| 2652 | */ |
| 2653 | #ifdef APPLLIB_EXP |
| 2654 | incpush(APPLLIB_EXP, FALSE); |
| 2655 | #endif |
| 2656 | |
| 2657 | #ifdef ARCHLIB_EXP |
| 2658 | incpush(ARCHLIB_EXP, FALSE); |
| 2659 | #endif |
| 2660 | #ifndef PRIVLIB_EXP |
| 2661 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" |
| 2662 | #endif |
| 2663 | incpush(PRIVLIB_EXP, FALSE); |
| 2664 | |
| 2665 | #ifdef SITEARCH_EXP |
| 2666 | incpush(SITEARCH_EXP, FALSE); |
| 2667 | #endif |
| 2668 | #ifdef SITELIB_EXP |
| 2669 | incpush(SITELIB_EXP, FALSE); |
| 2670 | #endif |
| 2671 | #ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ |
| 2672 | incpush(OLDARCHLIB_EXP, FALSE); |
| 2673 | #endif |
| 2674 | |
| 2675 | if (!tainting) |
| 2676 | incpush(".", FALSE); |
| 2677 | } |
| 2678 | |
| 2679 | #if defined(DOSISH) |
| 2680 | # define PERLLIB_SEP ';' |
| 2681 | #else |
| 2682 | # if defined(VMS) |
| 2683 | # define PERLLIB_SEP '|' |
| 2684 | # else |
| 2685 | # define PERLLIB_SEP ':' |
| 2686 | # endif |
| 2687 | #endif |
| 2688 | #ifndef PERLLIB_MANGLE |
| 2689 | # define PERLLIB_MANGLE(s,n) (s) |
| 2690 | #endif |
| 2691 | |
| 2692 | static void |
| 2693 | incpush(char *p, int addsubdirs) |
| 2694 | { |
| 2695 | SV *subdir = Nullsv; |
| 2696 | static char *archpat_auto; |
| 2697 | |
| 2698 | if (!p) |
| 2699 | return; |
| 2700 | |
| 2701 | if (addsubdirs) { |
| 2702 | subdir = newSV(0); |
| 2703 | if (!archpat_auto) { |
| 2704 | STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel) |
| 2705 | + sizeof("//auto")); |
| 2706 | New(55, archpat_auto, len, char); |
| 2707 | sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel); |
| 2708 | #ifdef VMS |
| 2709 | for (len = sizeof(ARCHNAME) + 2; |
| 2710 | archpat_auto[len] != '\0' && archpat_auto[len] != '/'; len++) |
| 2711 | if (archpat_auto[len] == '.') archpat_auto[len] = '_'; |
| 2712 | #endif |
| 2713 | } |
| 2714 | } |
| 2715 | |
| 2716 | /* Break at all separators */ |
| 2717 | while (p && *p) { |
| 2718 | SV *libdir = newSV(0); |
| 2719 | char *s; |
| 2720 | |
| 2721 | /* skip any consecutive separators */ |
| 2722 | while ( *p == PERLLIB_SEP ) { |
| 2723 | /* Uncomment the next line for PATH semantics */ |
| 2724 | /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ |
| 2725 | p++; |
| 2726 | } |
| 2727 | |
| 2728 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
| 2729 | sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), |
| 2730 | (STRLEN)(s - p)); |
| 2731 | p = s + 1; |
| 2732 | } |
| 2733 | else { |
| 2734 | sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); |
| 2735 | p = Nullch; /* break out */ |
| 2736 | } |
| 2737 | |
| 2738 | /* |
| 2739 | * BEFORE pushing libdir onto @INC we may first push version- and |
| 2740 | * archname-specific sub-directories. |
| 2741 | */ |
| 2742 | if (addsubdirs) { |
| 2743 | struct stat tmpstatbuf; |
| 2744 | #ifdef VMS |
| 2745 | char *unix; |
| 2746 | STRLEN len; |
| 2747 | |
| 2748 | if ((unix = tounixspec_ts(SvPV(libdir,na),Nullch)) != Nullch) { |
| 2749 | len = strlen(unix); |
| 2750 | while (unix[len-1] == '/') len--; /* Cosmetic */ |
| 2751 | sv_usepvn(libdir,unix,len); |
| 2752 | } |
| 2753 | else |
| 2754 | PerlIO_printf(PerlIO_stderr(), |
| 2755 | "Failed to unixify @INC element \"%s\"\n", |
| 2756 | SvPV(libdir,na)); |
| 2757 | #endif |
| 2758 | /* .../archname/version if -d .../archname/version/auto */ |
| 2759 | sv_setsv(subdir, libdir); |
| 2760 | sv_catpv(subdir, archpat_auto); |
| 2761 | if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 2762 | S_ISDIR(tmpstatbuf.st_mode)) |
| 2763 | av_push(GvAVn(incgv), |
| 2764 | newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); |
| 2765 | |
| 2766 | /* .../archname if -d .../archname/auto */ |
| 2767 | sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME), |
| 2768 | strlen(patchlevel) + 1, "", 0); |
| 2769 | if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && |
| 2770 | S_ISDIR(tmpstatbuf.st_mode)) |
| 2771 | av_push(GvAVn(incgv), |
| 2772 | newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); |
| 2773 | } |
| 2774 | |
| 2775 | /* finally push this lib directory on the end of @INC */ |
| 2776 | av_push(GvAVn(incgv), libdir); |
| 2777 | } |
| 2778 | |
| 2779 | SvREFCNT_dec(subdir); |
| 2780 | } |
| 2781 | |
| 2782 | #ifdef USE_THREADS |
| 2783 | static struct perl_thread * |
| 2784 | init_main_thread() |
| 2785 | { |
| 2786 | struct perl_thread *thr; |
| 2787 | XPV *xpv; |
| 2788 | |
| 2789 | Newz(53, thr, 1, struct perl_thread); |
| 2790 | curcop = &compiling; |
| 2791 | thr->cvcache = newHV(); |
| 2792 | thr->threadsv = newAV(); |
| 2793 | /* thr->threadsvp is set when find_threadsv is called */ |
| 2794 | thr->specific = newAV(); |
| 2795 | thr->errhv = newHV(); |
| 2796 | thr->flags = THRf_R_JOINABLE; |
| 2797 | MUTEX_INIT(&thr->mutex); |
| 2798 | /* Handcraft thrsv similarly to mess_sv */ |
| 2799 | New(53, thrsv, 1, SV); |
| 2800 | Newz(53, xpv, 1, XPV); |
| 2801 | SvFLAGS(thrsv) = SVt_PV; |
| 2802 | SvANY(thrsv) = (void*)xpv; |
| 2803 | SvREFCNT(thrsv) = 1 << 30; /* practically infinite */ |
| 2804 | SvPVX(thrsv) = (char*)thr; |
| 2805 | SvCUR_set(thrsv, sizeof(thr)); |
| 2806 | SvLEN_set(thrsv, sizeof(thr)); |
| 2807 | *SvEND(thrsv) = '\0'; /* in the trailing_nul field */ |
| 2808 | thr->oursv = thrsv; |
| 2809 | curcop = &compiling; |
| 2810 | chopset = " \n-"; |
| 2811 | |
| 2812 | MUTEX_LOCK(&threads_mutex); |
| 2813 | nthreads++; |
| 2814 | thr->tid = 0; |
| 2815 | thr->next = thr; |
| 2816 | thr->prev = thr; |
| 2817 | MUTEX_UNLOCK(&threads_mutex); |
| 2818 | |
| 2819 | #ifdef HAVE_THREAD_INTERN |
| 2820 | init_thread_intern(thr); |
| 2821 | #endif |
| 2822 | |
| 2823 | #ifdef SET_THREAD_SELF |
| 2824 | SET_THREAD_SELF(thr); |
| 2825 | #else |
| 2826 | thr->self = pthread_self(); |
| 2827 | #endif /* SET_THREAD_SELF */ |
| 2828 | SET_THR(thr); |
| 2829 | |
| 2830 | /* |
| 2831 | * These must come after the SET_THR because sv_setpvn does |
| 2832 | * SvTAINT and the taint fields require dTHR. |
| 2833 | */ |
| 2834 | toptarget = NEWSV(0,0); |
| 2835 | sv_upgrade(toptarget, SVt_PVFM); |
| 2836 | sv_setpvn(toptarget, "", 0); |
| 2837 | bodytarget = NEWSV(0,0); |
| 2838 | sv_upgrade(bodytarget, SVt_PVFM); |
| 2839 | sv_setpvn(bodytarget, "", 0); |
| 2840 | formtarget = bodytarget; |
| 2841 | thr->errsv = newSVpv("", 0); |
| 2842 | return thr; |
| 2843 | } |
| 2844 | #endif /* USE_THREADS */ |
| 2845 | |
| 2846 | void |
| 2847 | call_list(I32 oldscope, AV *list) |
| 2848 | { |
| 2849 | dTHR; |
| 2850 | line_t oldline = curcop->cop_line; |
| 2851 | STRLEN len; |
| 2852 | dJMPENV; |
| 2853 | int ret; |
| 2854 | |
| 2855 | while (AvFILL(list) >= 0) { |
| 2856 | CV *cv = (CV*)av_shift(list); |
| 2857 | |
| 2858 | SAVEFREESV(cv); |
| 2859 | |
| 2860 | JMPENV_PUSH(ret); |
| 2861 | switch (ret) { |
| 2862 | case 0: { |
| 2863 | SV* atsv = ERRSV; |
| 2864 | PUSHMARK(stack_sp); |
| 2865 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); |
| 2866 | (void)SvPV(atsv, len); |
| 2867 | if (len) { |
| 2868 | JMPENV_POP; |
| 2869 | curcop = &compiling; |
| 2870 | curcop->cop_line = oldline; |
| 2871 | if (list == beginav) |
| 2872 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); |
| 2873 | else |
| 2874 | sv_catpv(atsv, "END failed--cleanup aborted"); |
| 2875 | while (scopestack_ix > oldscope) |
| 2876 | LEAVE; |
| 2877 | croak("%s", SvPVX(atsv)); |
| 2878 | } |
| 2879 | } |
| 2880 | break; |
| 2881 | case 1: |
| 2882 | STATUS_ALL_FAILURE; |
| 2883 | /* FALL THROUGH */ |
| 2884 | case 2: |
| 2885 | /* my_exit() was called */ |
| 2886 | while (scopestack_ix > oldscope) |
| 2887 | LEAVE; |
| 2888 | FREETMPS; |
| 2889 | curstash = defstash; |
| 2890 | if (endav) |
| 2891 | call_list(oldscope, endav); |
| 2892 | JMPENV_POP; |
| 2893 | curcop = &compiling; |
| 2894 | curcop->cop_line = oldline; |
| 2895 | if (statusvalue) { |
| 2896 | if (list == beginav) |
| 2897 | croak("BEGIN failed--compilation aborted"); |
| 2898 | else |
| 2899 | croak("END failed--cleanup aborted"); |
| 2900 | } |
| 2901 | my_exit_jump(); |
| 2902 | /* NOTREACHED */ |
| 2903 | case 3: |
| 2904 | if (!restartop) { |
| 2905 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
| 2906 | FREETMPS; |
| 2907 | break; |
| 2908 | } |
| 2909 | JMPENV_POP; |
| 2910 | curcop = &compiling; |
| 2911 | curcop->cop_line = oldline; |
| 2912 | JMPENV_JUMP(3); |
| 2913 | } |
| 2914 | JMPENV_POP; |
| 2915 | } |
| 2916 | } |
| 2917 | |
| 2918 | void |
| 2919 | my_exit(U32 status) |
| 2920 | { |
| 2921 | dTHR; |
| 2922 | |
| 2923 | #ifdef USE_THREADS |
| 2924 | DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", |
| 2925 | thr, (unsigned long) status)); |
| 2926 | #endif /* USE_THREADS */ |
| 2927 | switch (status) { |
| 2928 | case 0: |
| 2929 | STATUS_ALL_SUCCESS; |
| 2930 | break; |
| 2931 | case 1: |
| 2932 | STATUS_ALL_FAILURE; |
| 2933 | break; |
| 2934 | default: |
| 2935 | STATUS_NATIVE_SET(status); |
| 2936 | break; |
| 2937 | } |
| 2938 | my_exit_jump(); |
| 2939 | } |
| 2940 | |
| 2941 | void |
| 2942 | my_failure_exit(void) |
| 2943 | { |
| 2944 | #ifdef VMS |
| 2945 | if (vaxc$errno & 1) { |
| 2946 | if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ |
| 2947 | STATUS_NATIVE_SET(44); |
| 2948 | } |
| 2949 | else { |
| 2950 | if (!vaxc$errno && errno) /* unlikely */ |
| 2951 | STATUS_NATIVE_SET(44); |
| 2952 | else |
| 2953 | STATUS_NATIVE_SET(vaxc$errno); |
| 2954 | } |
| 2955 | #else |
| 2956 | if (errno & 255) |
| 2957 | STATUS_POSIX_SET(errno); |
| 2958 | else if (STATUS_POSIX == 0) |
| 2959 | STATUS_POSIX_SET(255); |
| 2960 | #endif |
| 2961 | my_exit_jump(); |
| 2962 | } |
| 2963 | |
| 2964 | static void |
| 2965 | my_exit_jump(void) |
| 2966 | { |
| 2967 | dTHR; |
| 2968 | register PERL_CONTEXT *cx; |
| 2969 | I32 gimme; |
| 2970 | SV **newsp; |
| 2971 | |
| 2972 | if (e_tmpname) { |
| 2973 | if (e_fp) { |
| 2974 | PerlIO_close(e_fp); |
| 2975 | e_fp = Nullfp; |
| 2976 | } |
| 2977 | (void)UNLINK(e_tmpname); |
| 2978 | Safefree(e_tmpname); |
| 2979 | e_tmpname = Nullch; |
| 2980 | } |
| 2981 | |
| 2982 | if (cxstack_ix >= 0) { |
| 2983 | if (cxstack_ix > 0) |
| 2984 | dounwind(0); |
| 2985 | POPBLOCK(cx,curpm); |
| 2986 | LEAVE; |
| 2987 | } |
| 2988 | |
| 2989 | JMPENV_JUMP(2); |
| 2990 | } |
| 2991 | |
| 2992 | |
| 2993 | |