| 1 | /* mg.c |
| 2 | * |
| 3 | * Copyright (c) 1991-1997, 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 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never |
| 12 | * come here, and I don't want to see no more magic,' he said, and fell silent." |
| 13 | */ |
| 14 | |
| 15 | #include "EXTERN.h" |
| 16 | #include "perl.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(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
| 24 | # ifndef NGROUPS |
| 25 | # define NGROUPS 32 |
| 26 | # endif |
| 27 | #endif |
| 28 | |
| 29 | #ifdef PERL_OBJECT |
| 30 | # define VTBL this->*vtbl |
| 31 | #else |
| 32 | # define VTBL *vtbl |
| 33 | static void restore_magic _((void *p)); |
| 34 | #endif |
| 35 | |
| 36 | /* |
| 37 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
| 38 | */ |
| 39 | |
| 40 | struct magic_state { |
| 41 | SV* mgs_sv; |
| 42 | U32 mgs_flags; |
| 43 | I32 mgs_ss_ix; |
| 44 | }; |
| 45 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
| 46 | |
| 47 | STATIC void |
| 48 | save_magic(I32 mgs_ix, SV *sv) |
| 49 | { |
| 50 | dTHR; |
| 51 | MGS* mgs; |
| 52 | assert(SvMAGICAL(sv)); |
| 53 | |
| 54 | SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix); |
| 55 | |
| 56 | mgs = SSPTR(mgs_ix, MGS*); |
| 57 | mgs->mgs_sv = sv; |
| 58 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
| 59 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
| 60 | |
| 61 | SvMAGICAL_off(sv); |
| 62 | SvREADONLY_off(sv); |
| 63 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 64 | } |
| 65 | |
| 66 | STATIC void |
| 67 | restore_magic(void *p) |
| 68 | { |
| 69 | dTHR; |
| 70 | MGS* mgs = SSPTR((I32)p, MGS*); |
| 71 | SV* sv = mgs->mgs_sv; |
| 72 | |
| 73 | if (!sv) |
| 74 | return; |
| 75 | |
| 76 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
| 77 | { |
| 78 | if (mgs->mgs_flags) |
| 79 | SvFLAGS(sv) |= mgs->mgs_flags; |
| 80 | else |
| 81 | mg_magical(sv); |
| 82 | if (SvGMAGICAL(sv)) |
| 83 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
| 84 | } |
| 85 | |
| 86 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
| 87 | |
| 88 | /* If we're still on top of the stack, pop us off. (That condition |
| 89 | * will be satisfied if restore_magic was called explicitly, but *not* |
| 90 | * if it's being called via leave_scope.) |
| 91 | * The reason for doing this is that otherwise, things like sv_2cv() |
| 92 | * may leave alloc gunk on the savestack, and some code |
| 93 | * (e.g. sighandler) doesn't expect that... |
| 94 | */ |
| 95 | if (PL_savestack_ix == mgs->mgs_ss_ix) |
| 96 | { |
| 97 | I32 popval = SSPOPINT; |
| 98 | assert(popval == SAVEt_DESTRUCTOR); |
| 99 | PL_savestack_ix -= 2; |
| 100 | popval = SSPOPINT; |
| 101 | assert(popval == SAVEt_ALLOC); |
| 102 | popval = SSPOPINT; |
| 103 | PL_savestack_ix -= popval; |
| 104 | } |
| 105 | |
| 106 | } |
| 107 | |
| 108 | void |
| 109 | mg_magical(SV *sv) |
| 110 | { |
| 111 | MAGIC* mg; |
| 112 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 113 | MGVTBL* vtbl = mg->mg_virtual; |
| 114 | if (vtbl) { |
| 115 | if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP)) |
| 116 | SvGMAGICAL_on(sv); |
| 117 | if (vtbl->svt_set) |
| 118 | SvSMAGICAL_on(sv); |
| 119 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL)) |
| 120 | SvRMAGICAL_on(sv); |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | int |
| 126 | mg_get(SV *sv) |
| 127 | { |
| 128 | dTHR; |
| 129 | I32 mgs_ix; |
| 130 | MAGIC* mg; |
| 131 | MAGIC** mgp; |
| 132 | int mgp_valid = 0; |
| 133 | |
| 134 | mgs_ix = SSNEW(sizeof(MGS)); |
| 135 | save_magic(mgs_ix, sv); |
| 136 | |
| 137 | mgp = &SvMAGIC(sv); |
| 138 | while ((mg = *mgp) != 0) { |
| 139 | MGVTBL* vtbl = mg->mg_virtual; |
| 140 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) { |
| 141 | (VTBL->svt_get)(sv, mg); |
| 142 | /* Ignore this magic if it's been deleted */ |
| 143 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
| 144 | (mg->mg_flags & MGf_GSKIP)) |
| 145 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
| 146 | } |
| 147 | /* Advance to next magic (complicated by possible deletion) */ |
| 148 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
| 149 | mgp = &mg->mg_moremagic; |
| 150 | mgp_valid = 1; |
| 151 | } |
| 152 | else |
| 153 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ |
| 154 | } |
| 155 | |
| 156 | restore_magic((void*)mgs_ix); |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | int |
| 161 | mg_set(SV *sv) |
| 162 | { |
| 163 | dTHR; |
| 164 | I32 mgs_ix; |
| 165 | MAGIC* mg; |
| 166 | MAGIC* nextmg; |
| 167 | |
| 168 | mgs_ix = SSNEW(sizeof(MGS)); |
| 169 | save_magic(mgs_ix, sv); |
| 170 | |
| 171 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
| 172 | MGVTBL* vtbl = mg->mg_virtual; |
| 173 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
| 174 | if (mg->mg_flags & MGf_GSKIP) { |
| 175 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
| 176 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
| 177 | } |
| 178 | if (vtbl && (vtbl->svt_set != NULL)) |
| 179 | (VTBL->svt_set)(sv, mg); |
| 180 | } |
| 181 | |
| 182 | restore_magic((void*)mgs_ix); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | U32 |
| 187 | mg_length(SV *sv) |
| 188 | { |
| 189 | MAGIC* mg; |
| 190 | char *junk; |
| 191 | STRLEN len; |
| 192 | |
| 193 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 194 | MGVTBL* vtbl = mg->mg_virtual; |
| 195 | if (vtbl && (vtbl->svt_len != NULL)) { |
| 196 | I32 mgs_ix; |
| 197 | |
| 198 | mgs_ix = SSNEW(sizeof(MGS)); |
| 199 | save_magic(mgs_ix, sv); |
| 200 | /* omit MGf_GSKIP -- not changed here */ |
| 201 | len = (VTBL->svt_len)(sv, mg); |
| 202 | restore_magic((void*)mgs_ix); |
| 203 | return len; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | junk = SvPV(sv, len); |
| 208 | return len; |
| 209 | } |
| 210 | |
| 211 | I32 |
| 212 | mg_size(SV *sv) |
| 213 | { |
| 214 | MAGIC* mg; |
| 215 | I32 len; |
| 216 | |
| 217 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 218 | MGVTBL* vtbl = mg->mg_virtual; |
| 219 | if (vtbl && (vtbl->svt_len != NULL)) { |
| 220 | I32 mgs_ix; |
| 221 | |
| 222 | mgs_ix = SSNEW(sizeof(MGS)); |
| 223 | save_magic(mgs_ix, sv); |
| 224 | /* omit MGf_GSKIP -- not changed here */ |
| 225 | len = (VTBL->svt_len)(sv, mg); |
| 226 | restore_magic((void*)mgs_ix); |
| 227 | return len; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | switch(SvTYPE(sv)) { |
| 232 | case SVt_PVAV: |
| 233 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
| 234 | return len; |
| 235 | case SVt_PVHV: |
| 236 | /* FIXME */ |
| 237 | default: |
| 238 | croak("Size magic not implemented"); |
| 239 | break; |
| 240 | } |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | int |
| 245 | mg_clear(SV *sv) |
| 246 | { |
| 247 | I32 mgs_ix; |
| 248 | MAGIC* mg; |
| 249 | |
| 250 | mgs_ix = SSNEW(sizeof(MGS)); |
| 251 | save_magic(mgs_ix, sv); |
| 252 | |
| 253 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 254 | MGVTBL* vtbl = mg->mg_virtual; |
| 255 | /* omit GSKIP -- never set here */ |
| 256 | |
| 257 | if (vtbl && (vtbl->svt_clear != NULL)) |
| 258 | (VTBL->svt_clear)(sv, mg); |
| 259 | } |
| 260 | |
| 261 | restore_magic((void*)mgs_ix); |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | MAGIC* |
| 266 | mg_find(SV *sv, int type) |
| 267 | { |
| 268 | MAGIC* mg; |
| 269 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 270 | if (mg->mg_type == type) |
| 271 | return mg; |
| 272 | } |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | int |
| 277 | mg_copy(SV *sv, SV *nsv, char *key, I32 klen) |
| 278 | { |
| 279 | int count = 0; |
| 280 | MAGIC* mg; |
| 281 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 282 | if (isUPPER(mg->mg_type)) { |
| 283 | sv_magic(nsv, |
| 284 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj, |
| 285 | toLOWER(mg->mg_type), key, klen); |
| 286 | count++; |
| 287 | } |
| 288 | } |
| 289 | return count; |
| 290 | } |
| 291 | |
| 292 | int |
| 293 | mg_free(SV *sv) |
| 294 | { |
| 295 | MAGIC* mg; |
| 296 | MAGIC* moremagic; |
| 297 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
| 298 | MGVTBL* vtbl = mg->mg_virtual; |
| 299 | moremagic = mg->mg_moremagic; |
| 300 | if (vtbl && (vtbl->svt_free != NULL)) |
| 301 | (VTBL->svt_free)(sv, mg); |
| 302 | if (mg->mg_ptr && mg->mg_type != 'g') |
| 303 | if (mg->mg_len >= 0) |
| 304 | Safefree(mg->mg_ptr); |
| 305 | else if (mg->mg_len == HEf_SVKEY) |
| 306 | SvREFCNT_dec((SV*)mg->mg_ptr); |
| 307 | if (mg->mg_flags & MGf_REFCOUNTED) |
| 308 | SvREFCNT_dec(mg->mg_obj); |
| 309 | Safefree(mg); |
| 310 | } |
| 311 | SvMAGIC(sv) = 0; |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
| 316 | #include <signal.h> |
| 317 | #endif |
| 318 | |
| 319 | U32 |
| 320 | magic_regdata_cnt(SV *sv, MAGIC *mg) |
| 321 | { |
| 322 | dTHR; |
| 323 | register char *s; |
| 324 | register I32 i; |
| 325 | register REGEXP *rx; |
| 326 | char *t; |
| 327 | |
| 328 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) |
| 329 | return rx->lastparen; |
| 330 | return (U32)-1; |
| 331 | } |
| 332 | |
| 333 | int |
| 334 | magic_regdatum_get(SV *sv, MAGIC *mg) |
| 335 | { |
| 336 | dTHR; |
| 337 | register I32 paren; |
| 338 | register char *s; |
| 339 | register I32 i; |
| 340 | register REGEXP *rx; |
| 341 | char *t; |
| 342 | |
| 343 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 344 | paren = mg->mg_len; |
| 345 | if (paren < 0) |
| 346 | return 0; |
| 347 | if (paren <= rx->nparens && |
| 348 | (s = rx->startp[paren]) && |
| 349 | (t = rx->endp[paren])) |
| 350 | { |
| 351 | if (mg->mg_obj) /* @+ */ |
| 352 | i = t - rx->subbase; |
| 353 | else /* @- */ |
| 354 | i = s - rx->subbase; |
| 355 | sv_setiv(sv,i); |
| 356 | } |
| 357 | } |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | U32 |
| 362 | magic_len(SV *sv, MAGIC *mg) |
| 363 | { |
| 364 | dTHR; |
| 365 | register I32 paren; |
| 366 | register char *s; |
| 367 | register I32 i; |
| 368 | register REGEXP *rx; |
| 369 | char *t; |
| 370 | |
| 371 | switch (*mg->mg_ptr) { |
| 372 | case '1': case '2': case '3': case '4': |
| 373 | case '5': case '6': case '7': case '8': case '9': case '&': |
| 374 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 375 | paren = atoi(mg->mg_ptr); |
| 376 | getparen: |
| 377 | if (paren <= rx->nparens && |
| 378 | (s = rx->startp[paren]) && |
| 379 | (t = rx->endp[paren])) |
| 380 | { |
| 381 | i = t - s; |
| 382 | if (i >= 0) |
| 383 | return i; |
| 384 | } |
| 385 | } |
| 386 | return 0; |
| 387 | case '+': |
| 388 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 389 | paren = rx->lastparen; |
| 390 | if (paren) |
| 391 | goto getparen; |
| 392 | } |
| 393 | return 0; |
| 394 | case '`': |
| 395 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 396 | if ((s = rx->subbeg) && rx->startp[0]) { |
| 397 | i = rx->startp[0] - s; |
| 398 | if (i >= 0) |
| 399 | return i; |
| 400 | } |
| 401 | } |
| 402 | return 0; |
| 403 | case '\'': |
| 404 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 405 | if (rx->subend && (s = rx->endp[0])) { |
| 406 | i = rx->subend - s; |
| 407 | if (i >= 0) |
| 408 | return i; |
| 409 | } |
| 410 | } |
| 411 | return 0; |
| 412 | case ',': |
| 413 | return (STRLEN)PL_ofslen; |
| 414 | case '\\': |
| 415 | return (STRLEN)PL_orslen; |
| 416 | } |
| 417 | magic_get(sv,mg); |
| 418 | if (!SvPOK(sv) && SvNIOK(sv)) |
| 419 | sv_2pv(sv, &PL_na); |
| 420 | if (SvPOK(sv)) |
| 421 | return SvCUR(sv); |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | #if 0 |
| 426 | static char * |
| 427 | printW(sv) |
| 428 | SV * sv ; |
| 429 | { |
| 430 | #if 1 |
| 431 | return "" ; |
| 432 | |
| 433 | #else |
| 434 | int i ; |
| 435 | static char buffer[50] ; |
| 436 | char buf1[20] ; |
| 437 | char * p ; |
| 438 | |
| 439 | |
| 440 | sprintf(buffer, "Buffer %d, Length = %d - ", sv, SvCUR(sv)) ; |
| 441 | p = SvPVX(sv) ; |
| 442 | for (i = 0; i < SvCUR(sv) ; ++ i) { |
| 443 | sprintf (buf1, " %x [%x]", (p+i), *(p+i)) ; |
| 444 | strcat(buffer, buf1) ; |
| 445 | } |
| 446 | |
| 447 | return buffer ; |
| 448 | |
| 449 | #endif |
| 450 | } |
| 451 | #endif |
| 452 | |
| 453 | int |
| 454 | magic_get(SV *sv, MAGIC *mg) |
| 455 | { |
| 456 | dTHR; |
| 457 | register I32 paren; |
| 458 | register char *s; |
| 459 | register I32 i; |
| 460 | register REGEXP *rx; |
| 461 | char *t; |
| 462 | |
| 463 | switch (*mg->mg_ptr) { |
| 464 | case '\001': /* ^A */ |
| 465 | sv_setsv(sv, PL_bodytarget); |
| 466 | break; |
| 467 | case '\002': /* ^B */ |
| 468 | /* printf("magic_get $^B: ") ; */ |
| 469 | if (PL_curcop->cop_warnings == WARN_NONE) |
| 470 | /* printf("WARN_NONE\n"), */ |
| 471 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
| 472 | else if (PL_curcop->cop_warnings == WARN_ALL) |
| 473 | /* printf("WARN_ALL\n"), */ |
| 474 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
| 475 | else |
| 476 | /* printf("some %s\n", printW(PL_curcop->cop_warnings)), */ |
| 477 | sv_setsv(sv, PL_curcop->cop_warnings); |
| 478 | break; |
| 479 | case '\004': /* ^D */ |
| 480 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
| 481 | break; |
| 482 | case '\005': /* ^E */ |
| 483 | #ifdef VMS |
| 484 | { |
| 485 | # include <descrip.h> |
| 486 | # include <starlet.h> |
| 487 | char msg[255]; |
| 488 | $DESCRIPTOR(msgdsc,msg); |
| 489 | sv_setnv(sv,(double) vaxc$errno); |
| 490 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
| 491 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
| 492 | else |
| 493 | sv_setpv(sv,""); |
| 494 | } |
| 495 | #else |
| 496 | #ifdef OS2 |
| 497 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
| 498 | sv_setnv(sv, (double)errno); |
| 499 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
| 500 | } else { |
| 501 | if (errno != errno_isOS2) { |
| 502 | int tmp = _syserrno(); |
| 503 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
| 504 | Perl_rc = tmp; |
| 505 | } |
| 506 | sv_setnv(sv, (double)Perl_rc); |
| 507 | sv_setpv(sv, os2error(Perl_rc)); |
| 508 | } |
| 509 | #else |
| 510 | #ifdef WIN32 |
| 511 | { |
| 512 | DWORD dwErr = GetLastError(); |
| 513 | sv_setnv(sv, (double)dwErr); |
| 514 | if (dwErr) |
| 515 | { |
| 516 | #ifdef PERL_OBJECT |
| 517 | char *sMsg; |
| 518 | DWORD dwLen; |
| 519 | PerlProc_GetSysMsg(sMsg, dwLen, dwErr); |
| 520 | sv_setpvn(sv, sMsg, dwLen); |
| 521 | PerlProc_FreeBuf(sMsg); |
| 522 | #else |
| 523 | win32_str_os_error(sv, dwErr); |
| 524 | #endif |
| 525 | } |
| 526 | else |
| 527 | sv_setpv(sv, ""); |
| 528 | SetLastError(dwErr); |
| 529 | } |
| 530 | #else |
| 531 | sv_setnv(sv, (double)errno); |
| 532 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
| 533 | #endif |
| 534 | #endif |
| 535 | #endif |
| 536 | SvNOK_on(sv); /* what a wonderful hack! */ |
| 537 | break; |
| 538 | case '\006': /* ^F */ |
| 539 | sv_setiv(sv, (IV)PL_maxsysfd); |
| 540 | break; |
| 541 | case '\010': /* ^H */ |
| 542 | sv_setiv(sv, (IV)PL_hints); |
| 543 | break; |
| 544 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
| 545 | if (PL_inplace) |
| 546 | sv_setpv(sv, PL_inplace); |
| 547 | else |
| 548 | sv_setsv(sv, &PL_sv_undef); |
| 549 | break; |
| 550 | case '\017': /* ^O */ |
| 551 | sv_setpv(sv, PL_osname); |
| 552 | break; |
| 553 | case '\020': /* ^P */ |
| 554 | sv_setiv(sv, (IV)PL_perldb); |
| 555 | break; |
| 556 | case '\023': /* ^S */ |
| 557 | { |
| 558 | dTHR; |
| 559 | if (PL_lex_state != LEX_NOTPARSING) |
| 560 | SvOK_off(sv); |
| 561 | else if (PL_in_eval) |
| 562 | sv_setiv(sv, 1); |
| 563 | else |
| 564 | sv_setiv(sv, 0); |
| 565 | } |
| 566 | break; |
| 567 | case '\024': /* ^T */ |
| 568 | #ifdef BIG_TIME |
| 569 | sv_setnv(sv, PL_basetime); |
| 570 | #else |
| 571 | sv_setiv(sv, (IV)PL_basetime); |
| 572 | #endif |
| 573 | break; |
| 574 | case '\027': /* ^W */ |
| 575 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) == G_WARN_ON)); |
| 576 | break; |
| 577 | case '1': case '2': case '3': case '4': |
| 578 | case '5': case '6': case '7': case '8': case '9': case '&': |
| 579 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 580 | /* |
| 581 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); |
| 582 | * XXX Does the new way break anything? |
| 583 | */ |
| 584 | paren = atoi(mg->mg_ptr); |
| 585 | getparen: |
| 586 | if (paren <= rx->nparens && |
| 587 | (s = rx->startp[paren]) && |
| 588 | (t = rx->endp[paren])) |
| 589 | { |
| 590 | i = t - s; |
| 591 | getrx: |
| 592 | if (i >= 0) { |
| 593 | bool was_tainted; |
| 594 | if (PL_tainting) { |
| 595 | was_tainted = PL_tainted; |
| 596 | PL_tainted = FALSE; |
| 597 | } |
| 598 | sv_setpvn(sv,s,i); |
| 599 | if (PL_tainting) |
| 600 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); |
| 601 | break; |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | sv_setsv(sv,&PL_sv_undef); |
| 606 | break; |
| 607 | case '+': |
| 608 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 609 | paren = rx->lastparen; |
| 610 | if (paren) |
| 611 | goto getparen; |
| 612 | } |
| 613 | sv_setsv(sv,&PL_sv_undef); |
| 614 | break; |
| 615 | case '`': |
| 616 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 617 | if ((s = rx->subbeg) && rx->startp[0]) { |
| 618 | i = rx->startp[0] - s; |
| 619 | goto getrx; |
| 620 | } |
| 621 | } |
| 622 | sv_setsv(sv,&PL_sv_undef); |
| 623 | break; |
| 624 | case '\'': |
| 625 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
| 626 | if (rx->subend && (s = rx->endp[0])) { |
| 627 | i = rx->subend - s; |
| 628 | goto getrx; |
| 629 | } |
| 630 | } |
| 631 | sv_setsv(sv,&PL_sv_undef); |
| 632 | break; |
| 633 | case '.': |
| 634 | #ifndef lint |
| 635 | if (GvIO(PL_last_in_gv)) { |
| 636 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); |
| 637 | } |
| 638 | #endif |
| 639 | break; |
| 640 | case '?': |
| 641 | { |
| 642 | sv_setiv(sv, (IV)STATUS_CURRENT); |
| 643 | #ifdef COMPLEX_STATUS |
| 644 | LvTARGOFF(sv) = PL_statusvalue; |
| 645 | LvTARGLEN(sv) = PL_statusvalue_vms; |
| 646 | #endif |
| 647 | } |
| 648 | break; |
| 649 | case '^': |
| 650 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
| 651 | if (s) |
| 652 | sv_setpv(sv,s); |
| 653 | else { |
| 654 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
| 655 | sv_catpv(sv,"_TOP"); |
| 656 | } |
| 657 | break; |
| 658 | case '~': |
| 659 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
| 660 | if (!s) |
| 661 | s = GvENAME(PL_defoutgv); |
| 662 | sv_setpv(sv,s); |
| 663 | break; |
| 664 | #ifndef lint |
| 665 | case '=': |
| 666 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
| 667 | break; |
| 668 | case '-': |
| 669 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
| 670 | break; |
| 671 | case '%': |
| 672 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
| 673 | break; |
| 674 | #endif |
| 675 | case ':': |
| 676 | break; |
| 677 | case '/': |
| 678 | break; |
| 679 | case '[': |
| 680 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
| 681 | break; |
| 682 | case '|': |
| 683 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
| 684 | break; |
| 685 | case ',': |
| 686 | sv_setpvn(sv,PL_ofs,PL_ofslen); |
| 687 | break; |
| 688 | case '\\': |
| 689 | sv_setpvn(sv,PL_ors,PL_orslen); |
| 690 | break; |
| 691 | case '#': |
| 692 | sv_setpv(sv,PL_ofmt); |
| 693 | break; |
| 694 | case '!': |
| 695 | #ifdef VMS |
| 696 | sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno)); |
| 697 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
| 698 | #else |
| 699 | { |
| 700 | int saveerrno = errno; |
| 701 | sv_setnv(sv, (double)errno); |
| 702 | #ifdef OS2 |
| 703 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); |
| 704 | else |
| 705 | #endif |
| 706 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
| 707 | errno = saveerrno; |
| 708 | } |
| 709 | #endif |
| 710 | SvNOK_on(sv); /* what a wonderful hack! */ |
| 711 | break; |
| 712 | case '<': |
| 713 | sv_setiv(sv, (IV)PL_uid); |
| 714 | break; |
| 715 | case '>': |
| 716 | sv_setiv(sv, (IV)PL_euid); |
| 717 | break; |
| 718 | case '(': |
| 719 | sv_setiv(sv, (IV)PL_gid); |
| 720 | sv_setpvf(sv, "%Vd", (IV)PL_gid); |
| 721 | goto add_groups; |
| 722 | case ')': |
| 723 | sv_setiv(sv, (IV)PL_egid); |
| 724 | sv_setpvf(sv, "%Vd", (IV)PL_egid); |
| 725 | add_groups: |
| 726 | #ifdef HAS_GETGROUPS |
| 727 | { |
| 728 | Groups_t gary[NGROUPS]; |
| 729 | i = getgroups(NGROUPS,gary); |
| 730 | while (--i >= 0) |
| 731 | sv_catpvf(sv, " %Vd", (IV)gary[i]); |
| 732 | } |
| 733 | #endif |
| 734 | SvIOK_on(sv); /* what a wonderful hack! */ |
| 735 | break; |
| 736 | case '*': |
| 737 | break; |
| 738 | case '0': |
| 739 | break; |
| 740 | #ifdef USE_THREADS |
| 741 | case '@': |
| 742 | sv_setsv(sv, thr->errsv); |
| 743 | break; |
| 744 | #endif /* USE_THREADS */ |
| 745 | } |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | int |
| 750 | magic_getuvar(SV *sv, MAGIC *mg) |
| 751 | { |
| 752 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
| 753 | |
| 754 | if (uf && uf->uf_val) |
| 755 | (*uf->uf_val)(uf->uf_index, sv); |
| 756 | return 0; |
| 757 | } |
| 758 | |
| 759 | int |
| 760 | magic_setenv(SV *sv, MAGIC *mg) |
| 761 | { |
| 762 | register char *s; |
| 763 | char *ptr; |
| 764 | STRLEN len, klen; |
| 765 | I32 i; |
| 766 | |
| 767 | s = SvPV(sv,len); |
| 768 | ptr = MgPV(mg,klen); |
| 769 | my_setenv(ptr, s); |
| 770 | |
| 771 | #ifdef DYNAMIC_ENV_FETCH |
| 772 | /* We just undefd an environment var. Is a replacement */ |
| 773 | /* waiting in the wings? */ |
| 774 | if (!len) { |
| 775 | SV **valp; |
| 776 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
| 777 | s = SvPV(*valp, len); |
| 778 | } |
| 779 | #endif |
| 780 | |
| 781 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
| 782 | /* And you'll never guess what the dog had */ |
| 783 | /* in its mouth... */ |
| 784 | if (PL_tainting) { |
| 785 | MgTAINTEDDIR_off(mg); |
| 786 | #ifdef VMS |
| 787 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
| 788 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
| 789 | struct stat sbuf; |
| 790 | int i = 0, j = 0; |
| 791 | |
| 792 | do { /* DCL$PATH may be a search list */ |
| 793 | while (1) { /* as may dev portion of any element */ |
| 794 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { |
| 795 | if ( *(cp+1) == '.' || *(cp+1) == '-' || |
| 796 | cando_by_name(S_IWUSR,0,elt) ) { |
| 797 | MgTAINTEDDIR_on(mg); |
| 798 | return 0; |
| 799 | } |
| 800 | } |
| 801 | if ((cp = strchr(elt, ':')) != Nullch) |
| 802 | *cp = '\0'; |
| 803 | if (my_trnlnm(elt, eltbuf, j++)) |
| 804 | elt = eltbuf; |
| 805 | else |
| 806 | break; |
| 807 | } |
| 808 | j = 0; |
| 809 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); |
| 810 | } |
| 811 | #endif /* VMS */ |
| 812 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
| 813 | char *strend = s + len; |
| 814 | |
| 815 | while (s < strend) { |
| 816 | char tmpbuf[256]; |
| 817 | struct stat st; |
| 818 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
| 819 | s, strend, ':', &i); |
| 820 | s++; |
| 821 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
| 822 | || *tmpbuf != '/' |
| 823 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
| 824 | MgTAINTEDDIR_on(mg); |
| 825 | return 0; |
| 826 | } |
| 827 | } |
| 828 | } |
| 829 | } |
| 830 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
| 831 | |
| 832 | return 0; |
| 833 | } |
| 834 | |
| 835 | int |
| 836 | magic_clearenv(SV *sv, MAGIC *mg) |
| 837 | { |
| 838 | my_setenv(MgPV(mg,PL_na),Nullch); |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | int |
| 843 | magic_set_all_env(SV *sv, MAGIC *mg) |
| 844 | { |
| 845 | #if defined(VMS) |
| 846 | die("Can't make list assignment to %%ENV on this system"); |
| 847 | #else |
| 848 | dTHR; |
| 849 | if (PL_localizing) { |
| 850 | HE* entry; |
| 851 | magic_clear_all_env(sv,mg); |
| 852 | hv_iterinit((HV*)sv); |
| 853 | while (entry = hv_iternext((HV*)sv)) { |
| 854 | I32 keylen; |
| 855 | my_setenv(hv_iterkey(entry, &keylen), |
| 856 | SvPV(hv_iterval((HV*)sv, entry), PL_na)); |
| 857 | } |
| 858 | } |
| 859 | #endif |
| 860 | return 0; |
| 861 | } |
| 862 | |
| 863 | int |
| 864 | magic_clear_all_env(SV *sv, MAGIC *mg) |
| 865 | { |
| 866 | #if defined(VMS) |
| 867 | die("Can't make list assignment to %%ENV on this system"); |
| 868 | #else |
| 869 | #ifdef WIN32 |
| 870 | char *envv = GetEnvironmentStrings(); |
| 871 | char *cur = envv; |
| 872 | STRLEN len; |
| 873 | while (*cur) { |
| 874 | char *end = strchr(cur,'='); |
| 875 | if (end && end != cur) { |
| 876 | *end = '\0'; |
| 877 | my_setenv(cur,Nullch); |
| 878 | *end = '='; |
| 879 | cur += strlen(end+1)+1; |
| 880 | } |
| 881 | else if ((len = strlen(cur))) |
| 882 | cur += len+1; |
| 883 | } |
| 884 | FreeEnvironmentStrings(envv); |
| 885 | #else |
| 886 | I32 i; |
| 887 | |
| 888 | if (environ == PL_origenviron) |
| 889 | New(901, environ, 1, char*); |
| 890 | else |
| 891 | for (i = 0; environ[i]; i++) |
| 892 | Safefree(environ[i]); |
| 893 | environ[0] = Nullch; |
| 894 | |
| 895 | #endif |
| 896 | #endif |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | int |
| 901 | magic_getsig(SV *sv, MAGIC *mg) |
| 902 | { |
| 903 | I32 i; |
| 904 | /* Are we fetching a signal entry? */ |
| 905 | i = whichsig(MgPV(mg,PL_na)); |
| 906 | if (i) { |
| 907 | if(psig_ptr[i]) |
| 908 | sv_setsv(sv,psig_ptr[i]); |
| 909 | else { |
| 910 | Sighandler_t sigstate = rsignal_state(i); |
| 911 | |
| 912 | /* cache state so we don't fetch it again */ |
| 913 | if(sigstate == SIG_IGN) |
| 914 | sv_setpv(sv,"IGNORE"); |
| 915 | else |
| 916 | sv_setsv(sv,&PL_sv_undef); |
| 917 | psig_ptr[i] = SvREFCNT_inc(sv); |
| 918 | SvTEMP_off(sv); |
| 919 | } |
| 920 | } |
| 921 | return 0; |
| 922 | } |
| 923 | int |
| 924 | magic_clearsig(SV *sv, MAGIC *mg) |
| 925 | { |
| 926 | I32 i; |
| 927 | /* Are we clearing a signal entry? */ |
| 928 | i = whichsig(MgPV(mg,PL_na)); |
| 929 | if (i) { |
| 930 | if(psig_ptr[i]) { |
| 931 | SvREFCNT_dec(psig_ptr[i]); |
| 932 | psig_ptr[i]=0; |
| 933 | } |
| 934 | if(psig_name[i]) { |
| 935 | SvREFCNT_dec(psig_name[i]); |
| 936 | psig_name[i]=0; |
| 937 | } |
| 938 | } |
| 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | int |
| 943 | magic_setsig(SV *sv, MAGIC *mg) |
| 944 | { |
| 945 | dTHR; |
| 946 | register char *s; |
| 947 | I32 i; |
| 948 | SV** svp; |
| 949 | |
| 950 | s = MgPV(mg,PL_na); |
| 951 | if (*s == '_') { |
| 952 | if (strEQ(s,"__DIE__")) |
| 953 | svp = &PL_diehook; |
| 954 | else if (strEQ(s,"__WARN__")) |
| 955 | svp = &PL_warnhook; |
| 956 | else if (strEQ(s,"__PARSE__")) |
| 957 | svp = &PL_parsehook; |
| 958 | else |
| 959 | croak("No such hook: %s", s); |
| 960 | i = 0; |
| 961 | if (*svp) { |
| 962 | SvREFCNT_dec(*svp); |
| 963 | *svp = 0; |
| 964 | } |
| 965 | } |
| 966 | else { |
| 967 | i = whichsig(s); /* ...no, a brick */ |
| 968 | if (!i) { |
| 969 | if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM")) |
| 970 | warner(WARN_SIGNAL, "No such signal: SIG%s", s); |
| 971 | return 0; |
| 972 | } |
| 973 | SvREFCNT_dec(psig_name[i]); |
| 974 | SvREFCNT_dec(psig_ptr[i]); |
| 975 | psig_ptr[i] = SvREFCNT_inc(sv); |
| 976 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
| 977 | psig_name[i] = newSVpv(s, strlen(s)); |
| 978 | SvREADONLY_on(psig_name[i]); |
| 979 | } |
| 980 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
| 981 | if (i) |
| 982 | (void)rsignal(i, PL_sighandlerp); |
| 983 | else |
| 984 | *svp = SvREFCNT_inc(sv); |
| 985 | return 0; |
| 986 | } |
| 987 | s = SvPV_force(sv,PL_na); |
| 988 | if (strEQ(s,"IGNORE")) { |
| 989 | if (i) |
| 990 | (void)rsignal(i, SIG_IGN); |
| 991 | else |
| 992 | *svp = 0; |
| 993 | } |
| 994 | else if (strEQ(s,"DEFAULT") || !*s) { |
| 995 | if (i) |
| 996 | (void)rsignal(i, SIG_DFL); |
| 997 | else |
| 998 | *svp = 0; |
| 999 | } |
| 1000 | else { |
| 1001 | /* |
| 1002 | * We should warn if HINT_STRICT_REFS, but without |
| 1003 | * access to a known hint bit in a known OP, we can't |
| 1004 | * tell whether HINT_STRICT_REFS is in force or not. |
| 1005 | */ |
| 1006 | if (!strchr(s,':') && !strchr(s,'\'')) |
| 1007 | sv_setpv(sv, form("main::%s", s)); |
| 1008 | if (i) |
| 1009 | (void)rsignal(i, PL_sighandlerp); |
| 1010 | else |
| 1011 | *svp = SvREFCNT_inc(sv); |
| 1012 | } |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | int |
| 1017 | magic_setisa(SV *sv, MAGIC *mg) |
| 1018 | { |
| 1019 | PL_sub_generation++; |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | #ifdef OVERLOAD |
| 1024 | |
| 1025 | int |
| 1026 | magic_setamagic(SV *sv, MAGIC *mg) |
| 1027 | { |
| 1028 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
| 1029 | PL_amagic_generation++; |
| 1030 | |
| 1031 | return 0; |
| 1032 | } |
| 1033 | #endif /* OVERLOAD */ |
| 1034 | |
| 1035 | int |
| 1036 | magic_getnkeys(SV *sv, MAGIC *mg) |
| 1037 | { |
| 1038 | HV *hv = (HV*)LvTARG(sv); |
| 1039 | HE *entry; |
| 1040 | I32 i = 0; |
| 1041 | |
| 1042 | if (hv) { |
| 1043 | (void) hv_iterinit(hv); |
| 1044 | if (! SvTIED_mg((SV*)hv, 'P')) |
| 1045 | i = HvKEYS(hv); |
| 1046 | else { |
| 1047 | /*SUPPRESS 560*/ |
| 1048 | while (entry = hv_iternext(hv)) { |
| 1049 | i++; |
| 1050 | } |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | sv_setiv(sv, (IV)i); |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | int |
| 1059 | magic_setnkeys(SV *sv, MAGIC *mg) |
| 1060 | { |
| 1061 | if (LvTARG(sv)) { |
| 1062 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
| 1063 | } |
| 1064 | return 0; |
| 1065 | } |
| 1066 | |
| 1067 | /* caller is responsible for stack switching/cleanup */ |
| 1068 | STATIC int |
| 1069 | magic_methcall(SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
| 1070 | { |
| 1071 | dSP; |
| 1072 | |
| 1073 | PUSHMARK(SP); |
| 1074 | EXTEND(SP, n); |
| 1075 | PUSHs(SvTIED_obj(sv, mg)); |
| 1076 | if (n > 1) { |
| 1077 | if (mg->mg_ptr) { |
| 1078 | if (mg->mg_len >= 0) |
| 1079 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
| 1080 | else if (mg->mg_len == HEf_SVKEY) |
| 1081 | PUSHs((SV*)mg->mg_ptr); |
| 1082 | } |
| 1083 | else if (mg->mg_type == 'p') { |
| 1084 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
| 1085 | } |
| 1086 | } |
| 1087 | if (n > 2) { |
| 1088 | PUSHs(val); |
| 1089 | } |
| 1090 | PUTBACK; |
| 1091 | |
| 1092 | return perl_call_method(meth, flags); |
| 1093 | } |
| 1094 | |
| 1095 | STATIC int |
| 1096 | magic_methpack(SV *sv, MAGIC *mg, char *meth) |
| 1097 | { |
| 1098 | dSP; |
| 1099 | |
| 1100 | ENTER; |
| 1101 | SAVETMPS; |
| 1102 | PUSHSTACKi(PERLSI_MAGIC); |
| 1103 | |
| 1104 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
| 1105 | sv_setsv(sv, *PL_stack_sp--); |
| 1106 | } |
| 1107 | |
| 1108 | POPSTACK; |
| 1109 | FREETMPS; |
| 1110 | LEAVE; |
| 1111 | return 0; |
| 1112 | } |
| 1113 | |
| 1114 | int |
| 1115 | magic_getpack(SV *sv, MAGIC *mg) |
| 1116 | { |
| 1117 | magic_methpack(sv,mg,"FETCH"); |
| 1118 | if (mg->mg_ptr) |
| 1119 | mg->mg_flags |= MGf_GSKIP; |
| 1120 | return 0; |
| 1121 | } |
| 1122 | |
| 1123 | int |
| 1124 | magic_setpack(SV *sv, MAGIC *mg) |
| 1125 | { |
| 1126 | dSP; |
| 1127 | ENTER; |
| 1128 | PUSHSTACKi(PERLSI_MAGIC); |
| 1129 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
| 1130 | POPSTACK; |
| 1131 | LEAVE; |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | int |
| 1136 | magic_clearpack(SV *sv, MAGIC *mg) |
| 1137 | { |
| 1138 | return magic_methpack(sv,mg,"DELETE"); |
| 1139 | } |
| 1140 | |
| 1141 | |
| 1142 | U32 |
| 1143 | magic_sizepack(SV *sv, MAGIC *mg) |
| 1144 | { |
| 1145 | dSP; |
| 1146 | U32 retval = 0; |
| 1147 | |
| 1148 | ENTER; |
| 1149 | SAVETMPS; |
| 1150 | PUSHSTACKi(PERLSI_MAGIC); |
| 1151 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
| 1152 | sv = *PL_stack_sp--; |
| 1153 | retval = (U32) SvIV(sv)-1; |
| 1154 | } |
| 1155 | POPSTACK; |
| 1156 | FREETMPS; |
| 1157 | LEAVE; |
| 1158 | return retval; |
| 1159 | } |
| 1160 | |
| 1161 | int magic_wipepack(SV *sv, MAGIC *mg) |
| 1162 | { |
| 1163 | dSP; |
| 1164 | |
| 1165 | ENTER; |
| 1166 | PUSHSTACKi(PERLSI_MAGIC); |
| 1167 | PUSHMARK(SP); |
| 1168 | XPUSHs(SvTIED_obj(sv, mg)); |
| 1169 | PUTBACK; |
| 1170 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
| 1171 | POPSTACK; |
| 1172 | LEAVE; |
| 1173 | return 0; |
| 1174 | } |
| 1175 | |
| 1176 | int |
| 1177 | magic_nextpack(SV *sv, MAGIC *mg, SV *key) |
| 1178 | { |
| 1179 | dSP; |
| 1180 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
| 1181 | |
| 1182 | ENTER; |
| 1183 | SAVETMPS; |
| 1184 | PUSHSTACKi(PERLSI_MAGIC); |
| 1185 | PUSHMARK(SP); |
| 1186 | EXTEND(SP, 2); |
| 1187 | PUSHs(SvTIED_obj(sv, mg)); |
| 1188 | if (SvOK(key)) |
| 1189 | PUSHs(key); |
| 1190 | PUTBACK; |
| 1191 | |
| 1192 | if (perl_call_method(meth, G_SCALAR)) |
| 1193 | sv_setsv(key, *PL_stack_sp--); |
| 1194 | |
| 1195 | POPSTACK; |
| 1196 | FREETMPS; |
| 1197 | LEAVE; |
| 1198 | return 0; |
| 1199 | } |
| 1200 | |
| 1201 | int |
| 1202 | magic_existspack(SV *sv, MAGIC *mg) |
| 1203 | { |
| 1204 | return magic_methpack(sv,mg,"EXISTS"); |
| 1205 | } |
| 1206 | |
| 1207 | int |
| 1208 | magic_setdbline(SV *sv, MAGIC *mg) |
| 1209 | { |
| 1210 | dTHR; |
| 1211 | OP *o; |
| 1212 | I32 i; |
| 1213 | GV* gv; |
| 1214 | SV** svp; |
| 1215 | |
| 1216 | gv = PL_DBline; |
| 1217 | i = SvTRUE(sv); |
| 1218 | svp = av_fetch(GvAV(gv), |
| 1219 | atoi(MgPV(mg,PL_na)), FALSE); |
| 1220 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
| 1221 | o->op_private = i; |
| 1222 | else |
| 1223 | warn("Can't break at that line\n"); |
| 1224 | return 0; |
| 1225 | } |
| 1226 | |
| 1227 | int |
| 1228 | magic_getarylen(SV *sv, MAGIC *mg) |
| 1229 | { |
| 1230 | dTHR; |
| 1231 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
| 1232 | return 0; |
| 1233 | } |
| 1234 | |
| 1235 | int |
| 1236 | magic_setarylen(SV *sv, MAGIC *mg) |
| 1237 | { |
| 1238 | dTHR; |
| 1239 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
| 1240 | return 0; |
| 1241 | } |
| 1242 | |
| 1243 | int |
| 1244 | magic_getpos(SV *sv, MAGIC *mg) |
| 1245 | { |
| 1246 | SV* lsv = LvTARG(sv); |
| 1247 | |
| 1248 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
| 1249 | mg = mg_find(lsv, 'g'); |
| 1250 | if (mg && mg->mg_len >= 0) { |
| 1251 | dTHR; |
| 1252 | I32 i = mg->mg_len; |
| 1253 | if (IN_UTF8) |
| 1254 | sv_pos_b2u(lsv, &i); |
| 1255 | sv_setiv(sv, i + PL_curcop->cop_arybase); |
| 1256 | return 0; |
| 1257 | } |
| 1258 | } |
| 1259 | (void)SvOK_off(sv); |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
| 1263 | int |
| 1264 | magic_setpos(SV *sv, MAGIC *mg) |
| 1265 | { |
| 1266 | SV* lsv = LvTARG(sv); |
| 1267 | SSize_t pos; |
| 1268 | STRLEN len; |
| 1269 | STRLEN ulen; |
| 1270 | dTHR; |
| 1271 | |
| 1272 | mg = 0; |
| 1273 | |
| 1274 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
| 1275 | mg = mg_find(lsv, 'g'); |
| 1276 | if (!mg) { |
| 1277 | if (!SvOK(sv)) |
| 1278 | return 0; |
| 1279 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
| 1280 | mg = mg_find(lsv, 'g'); |
| 1281 | } |
| 1282 | else if (!SvOK(sv)) { |
| 1283 | mg->mg_len = -1; |
| 1284 | return 0; |
| 1285 | } |
| 1286 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
| 1287 | |
| 1288 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
| 1289 | |
| 1290 | if (IN_UTF8) { |
| 1291 | ulen = sv_len_utf8(lsv); |
| 1292 | if (ulen) |
| 1293 | len = ulen; |
| 1294 | else |
| 1295 | ulen = 0; |
| 1296 | } |
| 1297 | |
| 1298 | if (pos < 0) { |
| 1299 | pos += len; |
| 1300 | if (pos < 0) |
| 1301 | pos = 0; |
| 1302 | } |
| 1303 | else if (pos > len) |
| 1304 | pos = len; |
| 1305 | |
| 1306 | if (ulen) { |
| 1307 | I32 p = pos; |
| 1308 | sv_pos_u2b(lsv, &p, 0); |
| 1309 | pos = p; |
| 1310 | } |
| 1311 | |
| 1312 | mg->mg_len = pos; |
| 1313 | mg->mg_flags &= ~MGf_MINMATCH; |
| 1314 | |
| 1315 | return 0; |
| 1316 | } |
| 1317 | |
| 1318 | int |
| 1319 | magic_getglob(SV *sv, MAGIC *mg) |
| 1320 | { |
| 1321 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
| 1322 | SvFAKE_off(sv); |
| 1323 | gv_efullname3(sv,((GV*)sv), "*"); |
| 1324 | SvFAKE_on(sv); |
| 1325 | } |
| 1326 | else |
| 1327 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
| 1328 | return 0; |
| 1329 | } |
| 1330 | |
| 1331 | int |
| 1332 | magic_setglob(SV *sv, MAGIC *mg) |
| 1333 | { |
| 1334 | register char *s; |
| 1335 | GV* gv; |
| 1336 | |
| 1337 | if (!SvOK(sv)) |
| 1338 | return 0; |
| 1339 | s = SvPV(sv, PL_na); |
| 1340 | if (*s == '*' && s[1]) |
| 1341 | s++; |
| 1342 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
| 1343 | if (sv == (SV*)gv) |
| 1344 | return 0; |
| 1345 | if (GvGP(sv)) |
| 1346 | gp_free((GV*)sv); |
| 1347 | GvGP(sv) = gp_ref(GvGP(gv)); |
| 1348 | return 0; |
| 1349 | } |
| 1350 | |
| 1351 | int |
| 1352 | magic_getsubstr(SV *sv, MAGIC *mg) |
| 1353 | { |
| 1354 | STRLEN len; |
| 1355 | SV *lsv = LvTARG(sv); |
| 1356 | char *tmps = SvPV(lsv,len); |
| 1357 | I32 offs = LvTARGOFF(sv); |
| 1358 | I32 rem = LvTARGLEN(sv); |
| 1359 | |
| 1360 | if (offs > len) |
| 1361 | offs = len; |
| 1362 | if (rem + offs > len) |
| 1363 | rem = len - offs; |
| 1364 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); |
| 1365 | return 0; |
| 1366 | } |
| 1367 | |
| 1368 | int |
| 1369 | magic_setsubstr(SV *sv, MAGIC *mg) |
| 1370 | { |
| 1371 | STRLEN len; |
| 1372 | char *tmps = SvPV(sv,len); |
| 1373 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
| 1374 | return 0; |
| 1375 | } |
| 1376 | |
| 1377 | int |
| 1378 | magic_gettaint(SV *sv, MAGIC *mg) |
| 1379 | { |
| 1380 | dTHR; |
| 1381 | TAINT_IF((mg->mg_len & 1) || |
| 1382 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ |
| 1383 | return 0; |
| 1384 | } |
| 1385 | |
| 1386 | int |
| 1387 | magic_settaint(SV *sv, MAGIC *mg) |
| 1388 | { |
| 1389 | dTHR; |
| 1390 | if (PL_localizing) { |
| 1391 | if (PL_localizing == 1) |
| 1392 | mg->mg_len <<= 1; |
| 1393 | else |
| 1394 | mg->mg_len >>= 1; |
| 1395 | } |
| 1396 | else if (PL_tainted) |
| 1397 | mg->mg_len |= 1; |
| 1398 | else |
| 1399 | mg->mg_len &= ~1; |
| 1400 | return 0; |
| 1401 | } |
| 1402 | |
| 1403 | int |
| 1404 | magic_getvec(SV *sv, MAGIC *mg) |
| 1405 | { |
| 1406 | SV *lsv = LvTARG(sv); |
| 1407 | unsigned char *s; |
| 1408 | unsigned long retnum; |
| 1409 | STRLEN lsvlen; |
| 1410 | I32 len; |
| 1411 | I32 offset; |
| 1412 | I32 size; |
| 1413 | |
| 1414 | if (!lsv) { |
| 1415 | SvOK_off(sv); |
| 1416 | return 0; |
| 1417 | } |
| 1418 | s = (unsigned char *) SvPV(lsv, lsvlen); |
| 1419 | offset = LvTARGOFF(sv); |
| 1420 | size = LvTARGLEN(sv); |
| 1421 | len = (offset + size + 7) / 8; |
| 1422 | |
| 1423 | /* Copied from pp_vec() */ |
| 1424 | |
| 1425 | if (len > lsvlen) { |
| 1426 | if (size <= 8) |
| 1427 | retnum = 0; |
| 1428 | else { |
| 1429 | offset >>= 3; |
| 1430 | if (size == 16) { |
| 1431 | if (offset >= lsvlen) |
| 1432 | retnum = 0; |
| 1433 | else |
| 1434 | retnum = (unsigned long) s[offset] << 8; |
| 1435 | } |
| 1436 | else if (size == 32) { |
| 1437 | if (offset >= lsvlen) |
| 1438 | retnum = 0; |
| 1439 | else if (offset + 1 >= lsvlen) |
| 1440 | retnum = (unsigned long) s[offset] << 24; |
| 1441 | else if (offset + 2 >= lsvlen) |
| 1442 | retnum = ((unsigned long) s[offset] << 24) + |
| 1443 | ((unsigned long) s[offset + 1] << 16); |
| 1444 | else |
| 1445 | retnum = ((unsigned long) s[offset] << 24) + |
| 1446 | ((unsigned long) s[offset + 1] << 16) + |
| 1447 | (s[offset + 2] << 8); |
| 1448 | } |
| 1449 | } |
| 1450 | } |
| 1451 | else if (size < 8) |
| 1452 | retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); |
| 1453 | else { |
| 1454 | offset >>= 3; |
| 1455 | if (size == 8) |
| 1456 | retnum = s[offset]; |
| 1457 | else if (size == 16) |
| 1458 | retnum = ((unsigned long) s[offset] << 8) + s[offset+1]; |
| 1459 | else if (size == 32) |
| 1460 | retnum = ((unsigned long) s[offset] << 24) + |
| 1461 | ((unsigned long) s[offset + 1] << 16) + |
| 1462 | (s[offset + 2] << 8) + s[offset+3]; |
| 1463 | } |
| 1464 | |
| 1465 | sv_setuv(sv, (UV)retnum); |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
| 1469 | int |
| 1470 | magic_setvec(SV *sv, MAGIC *mg) |
| 1471 | { |
| 1472 | do_vecset(sv); /* XXX slurp this routine */ |
| 1473 | return 0; |
| 1474 | } |
| 1475 | |
| 1476 | int |
| 1477 | magic_getdefelem(SV *sv, MAGIC *mg) |
| 1478 | { |
| 1479 | SV *targ = Nullsv; |
| 1480 | if (LvTARGLEN(sv)) { |
| 1481 | if (mg->mg_obj) { |
| 1482 | SV *ahv = LvTARG(sv); |
| 1483 | if (SvTYPE(ahv) == SVt_PVHV) { |
| 1484 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
| 1485 | if (he) |
| 1486 | targ = HeVAL(he); |
| 1487 | } |
| 1488 | else { |
| 1489 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); |
| 1490 | if (svp) |
| 1491 | targ = *svp; |
| 1492 | } |
| 1493 | } |
| 1494 | else { |
| 1495 | AV* av = (AV*)LvTARG(sv); |
| 1496 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
| 1497 | targ = AvARRAY(av)[LvTARGOFF(sv)]; |
| 1498 | } |
| 1499 | if (targ && targ != &PL_sv_undef) { |
| 1500 | dTHR; /* just for SvREFCNT_dec */ |
| 1501 | /* somebody else defined it for us */ |
| 1502 | SvREFCNT_dec(LvTARG(sv)); |
| 1503 | LvTARG(sv) = SvREFCNT_inc(targ); |
| 1504 | LvTARGLEN(sv) = 0; |
| 1505 | SvREFCNT_dec(mg->mg_obj); |
| 1506 | mg->mg_obj = Nullsv; |
| 1507 | mg->mg_flags &= ~MGf_REFCOUNTED; |
| 1508 | } |
| 1509 | } |
| 1510 | else |
| 1511 | targ = LvTARG(sv); |
| 1512 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
| 1513 | return 0; |
| 1514 | } |
| 1515 | |
| 1516 | int |
| 1517 | magic_setdefelem(SV *sv, MAGIC *mg) |
| 1518 | { |
| 1519 | if (LvTARGLEN(sv)) |
| 1520 | vivify_defelem(sv); |
| 1521 | if (LvTARG(sv)) { |
| 1522 | sv_setsv(LvTARG(sv), sv); |
| 1523 | SvSETMAGIC(LvTARG(sv)); |
| 1524 | } |
| 1525 | return 0; |
| 1526 | } |
| 1527 | |
| 1528 | void |
| 1529 | vivify_defelem(SV *sv) |
| 1530 | { |
| 1531 | dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/ |
| 1532 | MAGIC *mg; |
| 1533 | SV *value = Nullsv; |
| 1534 | |
| 1535 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
| 1536 | return; |
| 1537 | if (mg->mg_obj) { |
| 1538 | SV *ahv = LvTARG(sv); |
| 1539 | if (SvTYPE(ahv) == SVt_PVHV) { |
| 1540 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
| 1541 | if (he) |
| 1542 | value = HeVAL(he); |
| 1543 | } |
| 1544 | else { |
| 1545 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
| 1546 | if (svp) |
| 1547 | value = *svp; |
| 1548 | } |
| 1549 | if (!value || value == &PL_sv_undef) |
| 1550 | croak(no_helem, SvPV(mg->mg_obj, PL_na)); |
| 1551 | } |
| 1552 | else { |
| 1553 | AV* av = (AV*)LvTARG(sv); |
| 1554 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
| 1555 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
| 1556 | else { |
| 1557 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
| 1558 | if (!svp || (value = *svp) == &PL_sv_undef) |
| 1559 | croak(no_aelem, (I32)LvTARGOFF(sv)); |
| 1560 | } |
| 1561 | } |
| 1562 | (void)SvREFCNT_inc(value); |
| 1563 | SvREFCNT_dec(LvTARG(sv)); |
| 1564 | LvTARG(sv) = value; |
| 1565 | LvTARGLEN(sv) = 0; |
| 1566 | SvREFCNT_dec(mg->mg_obj); |
| 1567 | mg->mg_obj = Nullsv; |
| 1568 | mg->mg_flags &= ~MGf_REFCOUNTED; |
| 1569 | } |
| 1570 | |
| 1571 | int |
| 1572 | magic_setmglob(SV *sv, MAGIC *mg) |
| 1573 | { |
| 1574 | mg->mg_len = -1; |
| 1575 | SvSCREAM_off(sv); |
| 1576 | return 0; |
| 1577 | } |
| 1578 | |
| 1579 | int |
| 1580 | magic_setbm(SV *sv, MAGIC *mg) |
| 1581 | { |
| 1582 | sv_unmagic(sv, 'B'); |
| 1583 | SvVALID_off(sv); |
| 1584 | return 0; |
| 1585 | } |
| 1586 | |
| 1587 | int |
| 1588 | magic_setfm(SV *sv, MAGIC *mg) |
| 1589 | { |
| 1590 | sv_unmagic(sv, 'f'); |
| 1591 | SvCOMPILED_off(sv); |
| 1592 | return 0; |
| 1593 | } |
| 1594 | |
| 1595 | int |
| 1596 | magic_setuvar(SV *sv, MAGIC *mg) |
| 1597 | { |
| 1598 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
| 1599 | |
| 1600 | if (uf && uf->uf_set) |
| 1601 | (*uf->uf_set)(uf->uf_index, sv); |
| 1602 | return 0; |
| 1603 | } |
| 1604 | |
| 1605 | int |
| 1606 | magic_freeregexp(SV *sv, MAGIC *mg) |
| 1607 | { |
| 1608 | regexp *re = (regexp *)mg->mg_obj; |
| 1609 | ReREFCNT_dec(re); |
| 1610 | return 0; |
| 1611 | } |
| 1612 | |
| 1613 | #ifdef USE_LOCALE_COLLATE |
| 1614 | int |
| 1615 | magic_setcollxfrm(SV *sv, MAGIC *mg) |
| 1616 | { |
| 1617 | /* |
| 1618 | * RenE<eacute> Descartes said "I think not." |
| 1619 | * and vanished with a faint plop. |
| 1620 | */ |
| 1621 | if (mg->mg_ptr) { |
| 1622 | Safefree(mg->mg_ptr); |
| 1623 | mg->mg_ptr = NULL; |
| 1624 | mg->mg_len = -1; |
| 1625 | } |
| 1626 | return 0; |
| 1627 | } |
| 1628 | #endif /* USE_LOCALE_COLLATE */ |
| 1629 | |
| 1630 | int |
| 1631 | magic_set(SV *sv, MAGIC *mg) |
| 1632 | { |
| 1633 | dTHR; |
| 1634 | register char *s; |
| 1635 | I32 i; |
| 1636 | STRLEN len; |
| 1637 | switch (*mg->mg_ptr) { |
| 1638 | case '\001': /* ^A */ |
| 1639 | sv_setsv(PL_bodytarget, sv); |
| 1640 | break; |
| 1641 | case '\002': /* ^B */ |
| 1642 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
| 1643 | if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize)) |
| 1644 | PL_compiling.cop_warnings = WARN_ALL; |
| 1645 | else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize)) |
| 1646 | PL_compiling.cop_warnings = WARN_NONE; |
| 1647 | else { |
| 1648 | if (PL_compiling.cop_warnings != WARN_NONE && |
| 1649 | PL_compiling.cop_warnings != WARN_ALL) |
| 1650 | sv_setsv(PL_compiling.cop_warnings, sv); |
| 1651 | else |
| 1652 | PL_compiling.cop_warnings = newSVsv(sv) ; |
| 1653 | } |
| 1654 | } |
| 1655 | break; |
| 1656 | case '\004': /* ^D */ |
| 1657 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
| 1658 | DEBUG_x(dump_all()); |
| 1659 | break; |
| 1660 | case '\005': /* ^E */ |
| 1661 | #ifdef VMS |
| 1662 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1663 | #else |
| 1664 | #ifdef WIN32 |
| 1665 | SetLastError( SvIV(sv) ); |
| 1666 | #else |
| 1667 | /* will anyone ever use this? */ |
| 1668 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); |
| 1669 | #endif |
| 1670 | #endif |
| 1671 | break; |
| 1672 | case '\006': /* ^F */ |
| 1673 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1674 | break; |
| 1675 | case '\010': /* ^H */ |
| 1676 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1677 | break; |
| 1678 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
| 1679 | if (PL_inplace) |
| 1680 | Safefree(PL_inplace); |
| 1681 | if (SvOK(sv)) |
| 1682 | PL_inplace = savepv(SvPV(sv,PL_na)); |
| 1683 | else |
| 1684 | PL_inplace = Nullch; |
| 1685 | break; |
| 1686 | case '\017': /* ^O */ |
| 1687 | if (PL_osname) |
| 1688 | Safefree(PL_osname); |
| 1689 | if (SvOK(sv)) |
| 1690 | PL_osname = savepv(SvPV(sv,PL_na)); |
| 1691 | else |
| 1692 | PL_osname = Nullch; |
| 1693 | break; |
| 1694 | case '\020': /* ^P */ |
| 1695 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1696 | break; |
| 1697 | case '\024': /* ^T */ |
| 1698 | #ifdef BIG_TIME |
| 1699 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
| 1700 | #else |
| 1701 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1702 | #endif |
| 1703 | break; |
| 1704 | case '\027': /* ^W */ |
| 1705 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
| 1706 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1707 | PL_dowarn = (i ? G_WARN_ON : G_WARN_OFF) ; |
| 1708 | } |
| 1709 | break; |
| 1710 | case '.': |
| 1711 | if (PL_localizing) { |
| 1712 | if (PL_localizing == 1) |
| 1713 | save_sptr((SV**)&PL_last_in_gv); |
| 1714 | } |
| 1715 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
| 1716 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); |
| 1717 | break; |
| 1718 | case '^': |
| 1719 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
| 1720 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na)); |
| 1721 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
| 1722 | break; |
| 1723 | case '~': |
| 1724 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
| 1725 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na)); |
| 1726 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
| 1727 | break; |
| 1728 | case '=': |
| 1729 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1730 | break; |
| 1731 | case '-': |
| 1732 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1733 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
| 1734 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
| 1735 | break; |
| 1736 | case '%': |
| 1737 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1738 | break; |
| 1739 | case '|': |
| 1740 | { |
| 1741 | IO *io = GvIOp(PL_defoutgv); |
| 1742 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
| 1743 | IoFLAGS(io) &= ~IOf_FLUSH; |
| 1744 | else { |
| 1745 | if (!(IoFLAGS(io) & IOf_FLUSH)) { |
| 1746 | PerlIO *ofp = IoOFP(io); |
| 1747 | if (ofp) |
| 1748 | (void)PerlIO_flush(ofp); |
| 1749 | IoFLAGS(io) |= IOf_FLUSH; |
| 1750 | } |
| 1751 | } |
| 1752 | } |
| 1753 | break; |
| 1754 | case '*': |
| 1755 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1756 | PL_multiline = (i != 0); |
| 1757 | break; |
| 1758 | case '/': |
| 1759 | SvREFCNT_dec(PL_nrs); |
| 1760 | PL_nrs = newSVsv(sv); |
| 1761 | SvREFCNT_dec(PL_rs); |
| 1762 | PL_rs = SvREFCNT_inc(PL_nrs); |
| 1763 | break; |
| 1764 | case '\\': |
| 1765 | if (PL_ors) |
| 1766 | Safefree(PL_ors); |
| 1767 | if (SvOK(sv) || SvGMAGICAL(sv)) |
| 1768 | PL_ors = savepv(SvPV(sv,PL_orslen)); |
| 1769 | else { |
| 1770 | PL_ors = Nullch; |
| 1771 | PL_orslen = 0; |
| 1772 | } |
| 1773 | break; |
| 1774 | case ',': |
| 1775 | if (PL_ofs) |
| 1776 | Safefree(PL_ofs); |
| 1777 | PL_ofs = savepv(SvPV(sv, PL_ofslen)); |
| 1778 | break; |
| 1779 | case '#': |
| 1780 | if (PL_ofmt) |
| 1781 | Safefree(PL_ofmt); |
| 1782 | PL_ofmt = savepv(SvPV(sv,PL_na)); |
| 1783 | break; |
| 1784 | case '[': |
| 1785 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1786 | break; |
| 1787 | case '?': |
| 1788 | #ifdef COMPLEX_STATUS |
| 1789 | if (PL_localizing == 2) { |
| 1790 | PL_statusvalue = LvTARGOFF(sv); |
| 1791 | PL_statusvalue_vms = LvTARGLEN(sv); |
| 1792 | } |
| 1793 | else |
| 1794 | #endif |
| 1795 | #ifdef VMSISH_STATUS |
| 1796 | if (VMSISH_STATUS) |
| 1797 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); |
| 1798 | else |
| 1799 | #endif |
| 1800 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
| 1801 | break; |
| 1802 | case '!': |
| 1803 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
| 1804 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
| 1805 | break; |
| 1806 | case '<': |
| 1807 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1808 | if (PL_delaymagic) { |
| 1809 | PL_delaymagic |= DM_RUID; |
| 1810 | break; /* don't do magic till later */ |
| 1811 | } |
| 1812 | #ifdef HAS_SETRUID |
| 1813 | (void)setruid((Uid_t)PL_uid); |
| 1814 | #else |
| 1815 | #ifdef HAS_SETREUID |
| 1816 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
| 1817 | #else |
| 1818 | #ifdef HAS_SETRESUID |
| 1819 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
| 1820 | #else |
| 1821 | if (PL_uid == PL_euid) /* special case $< = $> */ |
| 1822 | (void)PerlProc_setuid(PL_uid); |
| 1823 | else { |
| 1824 | PL_uid = (I32)PerlProc_getuid(); |
| 1825 | croak("setruid() not implemented"); |
| 1826 | } |
| 1827 | #endif |
| 1828 | #endif |
| 1829 | #endif |
| 1830 | PL_uid = (I32)PerlProc_getuid(); |
| 1831 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 1832 | break; |
| 1833 | case '>': |
| 1834 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1835 | if (PL_delaymagic) { |
| 1836 | PL_delaymagic |= DM_EUID; |
| 1837 | break; /* don't do magic till later */ |
| 1838 | } |
| 1839 | #ifdef HAS_SETEUID |
| 1840 | (void)seteuid((Uid_t)PL_euid); |
| 1841 | #else |
| 1842 | #ifdef HAS_SETREUID |
| 1843 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
| 1844 | #else |
| 1845 | #ifdef HAS_SETRESUID |
| 1846 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
| 1847 | #else |
| 1848 | if (PL_euid == PL_uid) /* special case $> = $< */ |
| 1849 | PerlProc_setuid(PL_euid); |
| 1850 | else { |
| 1851 | PL_euid = (I32)PerlProc_geteuid(); |
| 1852 | croak("seteuid() not implemented"); |
| 1853 | } |
| 1854 | #endif |
| 1855 | #endif |
| 1856 | #endif |
| 1857 | PL_euid = (I32)PerlProc_geteuid(); |
| 1858 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 1859 | break; |
| 1860 | case '(': |
| 1861 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1862 | if (PL_delaymagic) { |
| 1863 | PL_delaymagic |= DM_RGID; |
| 1864 | break; /* don't do magic till later */ |
| 1865 | } |
| 1866 | #ifdef HAS_SETRGID |
| 1867 | (void)setrgid((Gid_t)PL_gid); |
| 1868 | #else |
| 1869 | #ifdef HAS_SETREGID |
| 1870 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
| 1871 | #else |
| 1872 | #ifdef HAS_SETRESGID |
| 1873 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
| 1874 | #else |
| 1875 | if (PL_gid == PL_egid) /* special case $( = $) */ |
| 1876 | (void)PerlProc_setgid(PL_gid); |
| 1877 | else { |
| 1878 | PL_gid = (I32)PerlProc_getgid(); |
| 1879 | croak("setrgid() not implemented"); |
| 1880 | } |
| 1881 | #endif |
| 1882 | #endif |
| 1883 | #endif |
| 1884 | PL_gid = (I32)PerlProc_getgid(); |
| 1885 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 1886 | break; |
| 1887 | case ')': |
| 1888 | #ifdef HAS_SETGROUPS |
| 1889 | { |
| 1890 | char *p = SvPV(sv, PL_na); |
| 1891 | Groups_t gary[NGROUPS]; |
| 1892 | |
| 1893 | SET_NUMERIC_STANDARD(); |
| 1894 | while (isSPACE(*p)) |
| 1895 | ++p; |
| 1896 | PL_egid = I_V(atof(p)); |
| 1897 | for (i = 0; i < NGROUPS; ++i) { |
| 1898 | while (*p && !isSPACE(*p)) |
| 1899 | ++p; |
| 1900 | while (isSPACE(*p)) |
| 1901 | ++p; |
| 1902 | if (!*p) |
| 1903 | break; |
| 1904 | gary[i] = I_V(atof(p)); |
| 1905 | } |
| 1906 | if (i) |
| 1907 | (void)setgroups(i, gary); |
| 1908 | } |
| 1909 | #else /* HAS_SETGROUPS */ |
| 1910 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
| 1911 | #endif /* HAS_SETGROUPS */ |
| 1912 | if (PL_delaymagic) { |
| 1913 | PL_delaymagic |= DM_EGID; |
| 1914 | break; /* don't do magic till later */ |
| 1915 | } |
| 1916 | #ifdef HAS_SETEGID |
| 1917 | (void)setegid((Gid_t)PL_egid); |
| 1918 | #else |
| 1919 | #ifdef HAS_SETREGID |
| 1920 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
| 1921 | #else |
| 1922 | #ifdef HAS_SETRESGID |
| 1923 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
| 1924 | #else |
| 1925 | if (PL_egid == PL_gid) /* special case $) = $( */ |
| 1926 | (void)PerlProc_setgid(PL_egid); |
| 1927 | else { |
| 1928 | PL_egid = (I32)PerlProc_getegid(); |
| 1929 | croak("setegid() not implemented"); |
| 1930 | } |
| 1931 | #endif |
| 1932 | #endif |
| 1933 | #endif |
| 1934 | PL_egid = (I32)PerlProc_getegid(); |
| 1935 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 1936 | break; |
| 1937 | case ':': |
| 1938 | PL_chopset = SvPV_force(sv,PL_na); |
| 1939 | break; |
| 1940 | case '0': |
| 1941 | if (!PL_origalen) { |
| 1942 | s = PL_origargv[0]; |
| 1943 | s += strlen(s); |
| 1944 | /* See if all the arguments are contiguous in memory */ |
| 1945 | for (i = 1; i < PL_origargc; i++) { |
| 1946 | if (PL_origargv[i] == s + 1 |
| 1947 | #ifdef OS2 |
| 1948 | || PL_origargv[i] == s + 2 |
| 1949 | #endif |
| 1950 | ) |
| 1951 | s += strlen(++s); /* this one is ok too */ |
| 1952 | else |
| 1953 | break; |
| 1954 | } |
| 1955 | /* can grab env area too? */ |
| 1956 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
| 1957 | #ifdef OS2 |
| 1958 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
| 1959 | #endif |
| 1960 | )) { |
| 1961 | my_setenv("NoNe SuCh", Nullch); |
| 1962 | /* force copy of environment */ |
| 1963 | for (i = 0; PL_origenviron[i]; i++) |
| 1964 | if (PL_origenviron[i] == s + 1) |
| 1965 | s += strlen(++s); |
| 1966 | else |
| 1967 | break; |
| 1968 | } |
| 1969 | PL_origalen = s - PL_origargv[0]; |
| 1970 | } |
| 1971 | s = SvPV_force(sv,len); |
| 1972 | i = len; |
| 1973 | if (i >= PL_origalen) { |
| 1974 | i = PL_origalen; |
| 1975 | /* don't allow system to limit $0 seen by script */ |
| 1976 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ |
| 1977 | Copy(s, PL_origargv[0], i, char); |
| 1978 | s = PL_origargv[0]+i; |
| 1979 | *s = '\0'; |
| 1980 | } |
| 1981 | else { |
| 1982 | Copy(s, PL_origargv[0], i, char); |
| 1983 | s = PL_origargv[0]+i; |
| 1984 | *s++ = '\0'; |
| 1985 | while (++i < PL_origalen) |
| 1986 | *s++ = ' '; |
| 1987 | s = PL_origargv[0]+i; |
| 1988 | for (i = 1; i < PL_origargc; i++) |
| 1989 | PL_origargv[i] = Nullch; |
| 1990 | } |
| 1991 | break; |
| 1992 | #ifdef USE_THREADS |
| 1993 | case '@': |
| 1994 | sv_setsv(thr->errsv, sv); |
| 1995 | break; |
| 1996 | #endif /* USE_THREADS */ |
| 1997 | } |
| 1998 | return 0; |
| 1999 | } |
| 2000 | |
| 2001 | #ifdef USE_THREADS |
| 2002 | int |
| 2003 | magic_mutexfree(SV *sv, MAGIC *mg) |
| 2004 | { |
| 2005 | dTHR; |
| 2006 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n", |
| 2007 | (unsigned long)thr, (unsigned long)sv);) |
| 2008 | if (MgOWNER(mg)) |
| 2009 | croak("panic: magic_mutexfree"); |
| 2010 | MUTEX_DESTROY(MgMUTEXP(mg)); |
| 2011 | COND_DESTROY(MgCONDP(mg)); |
| 2012 | return 0; |
| 2013 | } |
| 2014 | #endif /* USE_THREADS */ |
| 2015 | |
| 2016 | I32 |
| 2017 | whichsig(char *sig) |
| 2018 | { |
| 2019 | register char **sigv; |
| 2020 | |
| 2021 | for (sigv = sig_name+1; *sigv; sigv++) |
| 2022 | if (strEQ(sig,*sigv)) |
| 2023 | return sig_num[sigv - sig_name]; |
| 2024 | #ifdef SIGCLD |
| 2025 | if (strEQ(sig,"CHLD")) |
| 2026 | return SIGCLD; |
| 2027 | #endif |
| 2028 | #ifdef SIGCHLD |
| 2029 | if (strEQ(sig,"CLD")) |
| 2030 | return SIGCHLD; |
| 2031 | #endif |
| 2032 | return 0; |
| 2033 | } |
| 2034 | |
| 2035 | static SV* sig_sv; |
| 2036 | |
| 2037 | STATIC void |
| 2038 | unwind_handler_stack(void *p) |
| 2039 | { |
| 2040 | dTHR; |
| 2041 | U32 flags = *(U32*)p; |
| 2042 | |
| 2043 | if (flags & 1) |
| 2044 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
| 2045 | /* cxstack_ix-- Not needed, die already unwound it. */ |
| 2046 | if (flags & 64) |
| 2047 | SvREFCNT_dec(sig_sv); |
| 2048 | } |
| 2049 | |
| 2050 | Signal_t |
| 2051 | sighandler(int sig) |
| 2052 | { |
| 2053 | dSP; |
| 2054 | GV *gv = Nullgv; |
| 2055 | HV *st; |
| 2056 | SV *sv, *tSv = PL_Sv; |
| 2057 | CV *cv = Nullcv; |
| 2058 | OP *myop = PL_op; |
| 2059 | U32 flags = 0; |
| 2060 | I32 o_save_i = PL_savestack_ix, type; |
| 2061 | XPV *tXpv = PL_Xpv; |
| 2062 | |
| 2063 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
| 2064 | flags |= 1; |
| 2065 | if (PL_markstack_ptr < PL_markstack_max - 2) |
| 2066 | flags |= 4; |
| 2067 | if (PL_retstack_ix < PL_retstack_max - 2) |
| 2068 | flags |= 8; |
| 2069 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
| 2070 | flags |= 16; |
| 2071 | |
| 2072 | if (!psig_ptr[sig]) |
| 2073 | die("Signal SIG%s received, but no signal handler set.\n", |
| 2074 | sig_name[sig]); |
| 2075 | |
| 2076 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
| 2077 | infinity, so we fix 4 (in fact 5): */ |
| 2078 | if (flags & 1) { |
| 2079 | PL_savestack_ix += 5; /* Protect save in progress. */ |
| 2080 | o_save_i = PL_savestack_ix; |
| 2081 | SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); |
| 2082 | } |
| 2083 | if (flags & 4) |
| 2084 | PL_markstack_ptr++; /* Protect mark. */ |
| 2085 | if (flags & 8) { |
| 2086 | PL_retstack_ix++; |
| 2087 | PL_retstack[PL_retstack_ix] = NULL; |
| 2088 | } |
| 2089 | if (flags & 16) |
| 2090 | PL_scopestack_ix += 1; |
| 2091 | /* sv_2cv is too complicated, try a simpler variant first: */ |
| 2092 | if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig])) |
| 2093 | || SvTYPE(cv) != SVt_PVCV) |
| 2094 | cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE); |
| 2095 | |
| 2096 | if (!cv || !CvROOT(cv)) { |
| 2097 | if (ckWARN(WARN_SIGNAL)) |
| 2098 | warner(WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
| 2099 | sig_name[sig], (gv ? GvENAME(gv) |
| 2100 | : ((cv && CvGV(cv)) |
| 2101 | ? GvENAME(CvGV(cv)) |
| 2102 | : "__ANON__"))); |
| 2103 | goto cleanup; |
| 2104 | } |
| 2105 | |
| 2106 | if(psig_name[sig]) { |
| 2107 | sv = SvREFCNT_inc(psig_name[sig]); |
| 2108 | flags |= 64; |
| 2109 | sig_sv = sv; |
| 2110 | } else { |
| 2111 | sv = sv_newmortal(); |
| 2112 | sv_setpv(sv,sig_name[sig]); |
| 2113 | } |
| 2114 | |
| 2115 | PUSHSTACKi(PERLSI_SIGNAL); |
| 2116 | PUSHMARK(SP); |
| 2117 | PUSHs(sv); |
| 2118 | PUTBACK; |
| 2119 | |
| 2120 | perl_call_sv((SV*)cv, G_DISCARD); |
| 2121 | |
| 2122 | POPSTACK; |
| 2123 | cleanup: |
| 2124 | if (flags & 1) |
| 2125 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
| 2126 | if (flags & 4) |
| 2127 | PL_markstack_ptr--; |
| 2128 | if (flags & 8) |
| 2129 | PL_retstack_ix--; |
| 2130 | if (flags & 16) |
| 2131 | PL_scopestack_ix -= 1; |
| 2132 | if (flags & 64) |
| 2133 | SvREFCNT_dec(sv); |
| 2134 | PL_op = myop; /* Apparently not needed... */ |
| 2135 | |
| 2136 | PL_Sv = tSv; /* Restore global temporaries. */ |
| 2137 | PL_Xpv = tXpv; |
| 2138 | return; |
| 2139 | } |
| 2140 | |
| 2141 | |