| 1 | /* util.c |
| 2 | * |
| 3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 4 | * 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others |
| 5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public |
| 7 | * License or the Artistic License, as specified in the README file. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * 'Very useful, no doubt, that was to Saruman; yet it seems that he was |
| 13 | * not content.' --Gandalf to Pippin |
| 14 | * |
| 15 | * [p.598 of _The Lord of the Rings_, III/xi: "The PalantÃr"] |
| 16 | */ |
| 17 | |
| 18 | /* This file contains assorted utility routines. |
| 19 | * Which is a polite way of saying any stuff that people couldn't think of |
| 20 | * a better place for. Amongst other things, it includes the warning and |
| 21 | * dieing stuff, plus wrappers for malloc code. |
| 22 | */ |
| 23 | |
| 24 | #include "EXTERN.h" |
| 25 | #define PERL_IN_UTIL_C |
| 26 | #include "perl.h" |
| 27 | #include "reentr.h" |
| 28 | |
| 29 | #ifdef USE_PERLIO |
| 30 | #include "perliol.h" /* For PerlIOUnix_refcnt */ |
| 31 | #endif |
| 32 | |
| 33 | #ifndef PERL_MICRO |
| 34 | #include <signal.h> |
| 35 | #ifndef SIG_ERR |
| 36 | # define SIG_ERR ((Sighandler_t) -1) |
| 37 | #endif |
| 38 | #endif |
| 39 | |
| 40 | #ifdef __Lynx__ |
| 41 | /* Missing protos on LynxOS */ |
| 42 | int putenv(char *); |
| 43 | #endif |
| 44 | |
| 45 | #ifdef HAS_SELECT |
| 46 | # ifdef I_SYS_SELECT |
| 47 | # include <sys/select.h> |
| 48 | # endif |
| 49 | #endif |
| 50 | |
| 51 | #define FLUSH |
| 52 | |
| 53 | #if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC) |
| 54 | # define FD_CLOEXEC 1 /* NeXT needs this */ |
| 55 | #endif |
| 56 | |
| 57 | /* NOTE: Do not call the next three routines directly. Use the macros |
| 58 | * in handy.h, so that we can easily redefine everything to do tracking of |
| 59 | * allocated hunks back to the original New to track down any memory leaks. |
| 60 | * XXX This advice seems to be widely ignored :-( --AD August 1996. |
| 61 | */ |
| 62 | |
| 63 | #if defined (DEBUGGING) || defined(PERL_IMPLICIT_SYS) || defined (PERL_TRACK_MEMPOOL) |
| 64 | # define ALWAYS_NEED_THX |
| 65 | #endif |
| 66 | |
| 67 | /* paranoid version of system's malloc() */ |
| 68 | |
| 69 | Malloc_t |
| 70 | Perl_safesysmalloc(MEM_SIZE size) |
| 71 | { |
| 72 | #ifdef ALWAYS_NEED_THX |
| 73 | dTHX; |
| 74 | #endif |
| 75 | Malloc_t ptr; |
| 76 | #ifdef HAS_64K_LIMIT |
| 77 | if (size > 0xffff) { |
| 78 | PerlIO_printf(Perl_error_log, |
| 79 | "Allocation too large: %lx\n", size) FLUSH; |
| 80 | my_exit(1); |
| 81 | } |
| 82 | #endif /* HAS_64K_LIMIT */ |
| 83 | #ifdef PERL_TRACK_MEMPOOL |
| 84 | size += sTHX; |
| 85 | #endif |
| 86 | #ifdef DEBUGGING |
| 87 | if ((SSize_t)size < 0) |
| 88 | Perl_croak_nocontext("panic: malloc, size=%"UVuf, (UV) size); |
| 89 | #endif |
| 90 | ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */ |
| 91 | PERL_ALLOC_CHECK(ptr); |
| 92 | if (ptr != NULL) { |
| 93 | #ifdef PERL_TRACK_MEMPOOL |
| 94 | struct perl_memory_debug_header *const header |
| 95 | = (struct perl_memory_debug_header *)ptr; |
| 96 | #endif |
| 97 | |
| 98 | #ifdef PERL_POISON |
| 99 | PoisonNew(((char *)ptr), size, char); |
| 100 | #endif |
| 101 | |
| 102 | #ifdef PERL_TRACK_MEMPOOL |
| 103 | header->interpreter = aTHX; |
| 104 | /* Link us into the list. */ |
| 105 | header->prev = &PL_memory_debug_header; |
| 106 | header->next = PL_memory_debug_header.next; |
| 107 | PL_memory_debug_header.next = header; |
| 108 | header->next->prev = header; |
| 109 | # ifdef PERL_POISON |
| 110 | header->size = size; |
| 111 | # endif |
| 112 | ptr = (Malloc_t)((char*)ptr+sTHX); |
| 113 | #endif |
| 114 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
| 115 | return ptr; |
| 116 | } |
| 117 | else { |
| 118 | #ifndef ALWAYS_NEED_THX |
| 119 | dTHX; |
| 120 | #endif |
| 121 | if (PL_nomemok) |
| 122 | return NULL; |
| 123 | else { |
| 124 | croak_no_mem(); |
| 125 | } |
| 126 | } |
| 127 | /*NOTREACHED*/ |
| 128 | } |
| 129 | |
| 130 | /* paranoid version of system's realloc() */ |
| 131 | |
| 132 | Malloc_t |
| 133 | Perl_safesysrealloc(Malloc_t where,MEM_SIZE size) |
| 134 | { |
| 135 | #ifdef ALWAYS_NEED_THX |
| 136 | dTHX; |
| 137 | #endif |
| 138 | Malloc_t ptr; |
| 139 | #if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO) |
| 140 | Malloc_t PerlMem_realloc(); |
| 141 | #endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */ |
| 142 | |
| 143 | #ifdef HAS_64K_LIMIT |
| 144 | if (size > 0xffff) { |
| 145 | PerlIO_printf(Perl_error_log, |
| 146 | "Reallocation too large: %lx\n", size) FLUSH; |
| 147 | my_exit(1); |
| 148 | } |
| 149 | #endif /* HAS_64K_LIMIT */ |
| 150 | if (!size) { |
| 151 | safesysfree(where); |
| 152 | return NULL; |
| 153 | } |
| 154 | |
| 155 | if (!where) |
| 156 | return safesysmalloc(size); |
| 157 | #ifdef PERL_TRACK_MEMPOOL |
| 158 | where = (Malloc_t)((char*)where-sTHX); |
| 159 | size += sTHX; |
| 160 | { |
| 161 | struct perl_memory_debug_header *const header |
| 162 | = (struct perl_memory_debug_header *)where; |
| 163 | |
| 164 | if (header->interpreter != aTHX) { |
| 165 | Perl_croak_nocontext("panic: realloc from wrong pool, %p!=%p", |
| 166 | header->interpreter, aTHX); |
| 167 | } |
| 168 | assert(header->next->prev == header); |
| 169 | assert(header->prev->next == header); |
| 170 | # ifdef PERL_POISON |
| 171 | if (header->size > size) { |
| 172 | const MEM_SIZE freed_up = header->size - size; |
| 173 | char *start_of_freed = ((char *)where) + size; |
| 174 | PoisonFree(start_of_freed, freed_up, char); |
| 175 | } |
| 176 | header->size = size; |
| 177 | # endif |
| 178 | } |
| 179 | #endif |
| 180 | #ifdef DEBUGGING |
| 181 | if ((SSize_t)size < 0) |
| 182 | Perl_croak_nocontext("panic: realloc, size=%"UVuf, (UV)size); |
| 183 | #endif |
| 184 | ptr = (Malloc_t)PerlMem_realloc(where,size); |
| 185 | PERL_ALLOC_CHECK(ptr); |
| 186 | |
| 187 | /* MUST do this fixup first, before doing ANYTHING else, as anything else |
| 188 | might allocate memory/free/move memory, and until we do the fixup, it |
| 189 | may well be chasing (and writing to) free memory. */ |
| 190 | #ifdef PERL_TRACK_MEMPOOL |
| 191 | if (ptr != NULL) { |
| 192 | struct perl_memory_debug_header *const header |
| 193 | = (struct perl_memory_debug_header *)ptr; |
| 194 | |
| 195 | # ifdef PERL_POISON |
| 196 | if (header->size < size) { |
| 197 | const MEM_SIZE fresh = size - header->size; |
| 198 | char *start_of_fresh = ((char *)ptr) + size; |
| 199 | PoisonNew(start_of_fresh, fresh, char); |
| 200 | } |
| 201 | # endif |
| 202 | |
| 203 | header->next->prev = header; |
| 204 | header->prev->next = header; |
| 205 | |
| 206 | ptr = (Malloc_t)((char*)ptr+sTHX); |
| 207 | } |
| 208 | #endif |
| 209 | |
| 210 | /* In particular, must do that fixup above before logging anything via |
| 211 | *printf(), as it can reallocate memory, which can cause SEGVs. */ |
| 212 | |
| 213 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++)); |
| 214 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size)); |
| 215 | |
| 216 | |
| 217 | if (ptr != NULL) { |
| 218 | return ptr; |
| 219 | } |
| 220 | else { |
| 221 | #ifndef ALWAYS_NEED_THX |
| 222 | dTHX; |
| 223 | #endif |
| 224 | if (PL_nomemok) |
| 225 | return NULL; |
| 226 | else { |
| 227 | croak_no_mem(); |
| 228 | } |
| 229 | } |
| 230 | /*NOTREACHED*/ |
| 231 | } |
| 232 | |
| 233 | /* safe version of system's free() */ |
| 234 | |
| 235 | Free_t |
| 236 | Perl_safesysfree(Malloc_t where) |
| 237 | { |
| 238 | #ifdef ALWAYS_NEED_THX |
| 239 | dTHX; |
| 240 | #else |
| 241 | dVAR; |
| 242 | #endif |
| 243 | DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++)); |
| 244 | if (where) { |
| 245 | #ifdef PERL_TRACK_MEMPOOL |
| 246 | where = (Malloc_t)((char*)where-sTHX); |
| 247 | { |
| 248 | struct perl_memory_debug_header *const header |
| 249 | = (struct perl_memory_debug_header *)where; |
| 250 | |
| 251 | if (header->interpreter != aTHX) { |
| 252 | Perl_croak_nocontext("panic: free from wrong pool, %p!=%p", |
| 253 | header->interpreter, aTHX); |
| 254 | } |
| 255 | if (!header->prev) { |
| 256 | Perl_croak_nocontext("panic: duplicate free"); |
| 257 | } |
| 258 | if (!(header->next)) |
| 259 | Perl_croak_nocontext("panic: bad free, header->next==NULL"); |
| 260 | if (header->next->prev != header || header->prev->next != header) { |
| 261 | Perl_croak_nocontext("panic: bad free, ->next->prev=%p, " |
| 262 | "header=%p, ->prev->next=%p", |
| 263 | header->next->prev, header, |
| 264 | header->prev->next); |
| 265 | } |
| 266 | /* Unlink us from the chain. */ |
| 267 | header->next->prev = header->prev; |
| 268 | header->prev->next = header->next; |
| 269 | # ifdef PERL_POISON |
| 270 | PoisonNew(where, header->size, char); |
| 271 | # endif |
| 272 | /* Trigger the duplicate free warning. */ |
| 273 | header->next = NULL; |
| 274 | } |
| 275 | #endif |
| 276 | PerlMem_free(where); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | /* safe version of system's calloc() */ |
| 281 | |
| 282 | Malloc_t |
| 283 | Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size) |
| 284 | { |
| 285 | #ifdef ALWAYS_NEED_THX |
| 286 | dTHX; |
| 287 | #endif |
| 288 | Malloc_t ptr; |
| 289 | #if defined(PERL_TRACK_MEMPOOL) || defined(HAS_64K_LIMIT) || defined(DEBUGGING) |
| 290 | MEM_SIZE total_size = 0; |
| 291 | #endif |
| 292 | |
| 293 | /* Even though calloc() for zero bytes is strange, be robust. */ |
| 294 | if (size && (count <= MEM_SIZE_MAX / size)) { |
| 295 | #if defined(PERL_TRACK_MEMPOOL) || defined(HAS_64K_LIMIT) || defined(DEBUGGING) |
| 296 | total_size = size * count; |
| 297 | #endif |
| 298 | } |
| 299 | else |
| 300 | croak_memory_wrap(); |
| 301 | #ifdef PERL_TRACK_MEMPOOL |
| 302 | if (sTHX <= MEM_SIZE_MAX - (MEM_SIZE)total_size) |
| 303 | total_size += sTHX; |
| 304 | else |
| 305 | croak_memory_wrap(); |
| 306 | #endif |
| 307 | #ifdef HAS_64K_LIMIT |
| 308 | if (total_size > 0xffff) { |
| 309 | PerlIO_printf(Perl_error_log, |
| 310 | "Allocation too large: %lx\n", total_size) FLUSH; |
| 311 | my_exit(1); |
| 312 | } |
| 313 | #endif /* HAS_64K_LIMIT */ |
| 314 | #ifdef DEBUGGING |
| 315 | if ((SSize_t)size < 0 || (SSize_t)count < 0) |
| 316 | Perl_croak_nocontext("panic: calloc, size=%"UVuf", count=%"UVuf, |
| 317 | (UV)size, (UV)count); |
| 318 | #endif |
| 319 | #ifdef PERL_TRACK_MEMPOOL |
| 320 | /* Have to use malloc() because we've added some space for our tracking |
| 321 | header. */ |
| 322 | /* malloc(0) is non-portable. */ |
| 323 | ptr = (Malloc_t)PerlMem_malloc(total_size ? total_size : 1); |
| 324 | #else |
| 325 | /* Use calloc() because it might save a memset() if the memory is fresh |
| 326 | and clean from the OS. */ |
| 327 | if (count && size) |
| 328 | ptr = (Malloc_t)PerlMem_calloc(count, size); |
| 329 | else /* calloc(0) is non-portable. */ |
| 330 | ptr = (Malloc_t)PerlMem_calloc(count ? count : 1, size ? size : 1); |
| 331 | #endif |
| 332 | PERL_ALLOC_CHECK(ptr); |
| 333 | DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)total_size)); |
| 334 | if (ptr != NULL) { |
| 335 | #ifdef PERL_TRACK_MEMPOOL |
| 336 | { |
| 337 | struct perl_memory_debug_header *const header |
| 338 | = (struct perl_memory_debug_header *)ptr; |
| 339 | |
| 340 | memset((void*)ptr, 0, total_size); |
| 341 | header->interpreter = aTHX; |
| 342 | /* Link us into the list. */ |
| 343 | header->prev = &PL_memory_debug_header; |
| 344 | header->next = PL_memory_debug_header.next; |
| 345 | PL_memory_debug_header.next = header; |
| 346 | header->next->prev = header; |
| 347 | # ifdef PERL_POISON |
| 348 | header->size = total_size; |
| 349 | # endif |
| 350 | ptr = (Malloc_t)((char*)ptr+sTHX); |
| 351 | } |
| 352 | #endif |
| 353 | return ptr; |
| 354 | } |
| 355 | else { |
| 356 | #ifndef ALWAYS_NEED_THX |
| 357 | dTHX; |
| 358 | #endif |
| 359 | if (PL_nomemok) |
| 360 | return NULL; |
| 361 | croak_no_mem(); |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | /* These must be defined when not using Perl's malloc for binary |
| 366 | * compatibility */ |
| 367 | |
| 368 | #ifndef MYMALLOC |
| 369 | |
| 370 | Malloc_t Perl_malloc (MEM_SIZE nbytes) |
| 371 | { |
| 372 | dTHXs; |
| 373 | return (Malloc_t)PerlMem_malloc(nbytes); |
| 374 | } |
| 375 | |
| 376 | Malloc_t Perl_calloc (MEM_SIZE elements, MEM_SIZE size) |
| 377 | { |
| 378 | dTHXs; |
| 379 | return (Malloc_t)PerlMem_calloc(elements, size); |
| 380 | } |
| 381 | |
| 382 | Malloc_t Perl_realloc (Malloc_t where, MEM_SIZE nbytes) |
| 383 | { |
| 384 | dTHXs; |
| 385 | return (Malloc_t)PerlMem_realloc(where, nbytes); |
| 386 | } |
| 387 | |
| 388 | Free_t Perl_mfree (Malloc_t where) |
| 389 | { |
| 390 | dTHXs; |
| 391 | PerlMem_free(where); |
| 392 | } |
| 393 | |
| 394 | #endif |
| 395 | |
| 396 | /* copy a string up to some (non-backslashed) delimiter, if any */ |
| 397 | |
| 398 | char * |
| 399 | Perl_delimcpy(register char *to, register const char *toend, register const char *from, register const char *fromend, register int delim, I32 *retlen) |
| 400 | { |
| 401 | I32 tolen; |
| 402 | |
| 403 | PERL_ARGS_ASSERT_DELIMCPY; |
| 404 | |
| 405 | for (tolen = 0; from < fromend; from++, tolen++) { |
| 406 | if (*from == '\\') { |
| 407 | if (from[1] != delim) { |
| 408 | if (to < toend) |
| 409 | *to++ = *from; |
| 410 | tolen++; |
| 411 | } |
| 412 | from++; |
| 413 | } |
| 414 | else if (*from == delim) |
| 415 | break; |
| 416 | if (to < toend) |
| 417 | *to++ = *from; |
| 418 | } |
| 419 | if (to < toend) |
| 420 | *to = '\0'; |
| 421 | *retlen = tolen; |
| 422 | return (char *)from; |
| 423 | } |
| 424 | |
| 425 | /* return ptr to little string in big string, NULL if not found */ |
| 426 | /* This routine was donated by Corey Satten. */ |
| 427 | |
| 428 | char * |
| 429 | Perl_instr(register const char *big, register const char *little) |
| 430 | { |
| 431 | I32 first; |
| 432 | |
| 433 | PERL_ARGS_ASSERT_INSTR; |
| 434 | |
| 435 | if (!little) |
| 436 | return (char*)big; |
| 437 | first = *little++; |
| 438 | if (!first) |
| 439 | return (char*)big; |
| 440 | while (*big) { |
| 441 | const char *s, *x; |
| 442 | if (*big++ != first) |
| 443 | continue; |
| 444 | for (x=big,s=little; *s; /**/ ) { |
| 445 | if (!*x) |
| 446 | return NULL; |
| 447 | if (*s != *x) |
| 448 | break; |
| 449 | else { |
| 450 | s++; |
| 451 | x++; |
| 452 | } |
| 453 | } |
| 454 | if (!*s) |
| 455 | return (char*)(big-1); |
| 456 | } |
| 457 | return NULL; |
| 458 | } |
| 459 | |
| 460 | /* same as instr but allow embedded nulls. The end pointers point to 1 beyond |
| 461 | * the final character desired to be checked */ |
| 462 | |
| 463 | char * |
| 464 | Perl_ninstr(const char *big, const char *bigend, const char *little, const char *lend) |
| 465 | { |
| 466 | PERL_ARGS_ASSERT_NINSTR; |
| 467 | if (little >= lend) |
| 468 | return (char*)big; |
| 469 | { |
| 470 | const char first = *little; |
| 471 | const char *s, *x; |
| 472 | bigend -= lend - little++; |
| 473 | OUTER: |
| 474 | while (big <= bigend) { |
| 475 | if (*big++ == first) { |
| 476 | for (x=big,s=little; s < lend; x++,s++) { |
| 477 | if (*s != *x) |
| 478 | goto OUTER; |
| 479 | } |
| 480 | return (char*)(big-1); |
| 481 | } |
| 482 | } |
| 483 | } |
| 484 | return NULL; |
| 485 | } |
| 486 | |
| 487 | /* reverse of the above--find last substring */ |
| 488 | |
| 489 | char * |
| 490 | Perl_rninstr(register const char *big, const char *bigend, const char *little, const char *lend) |
| 491 | { |
| 492 | const char *bigbeg; |
| 493 | const I32 first = *little; |
| 494 | const char * const littleend = lend; |
| 495 | |
| 496 | PERL_ARGS_ASSERT_RNINSTR; |
| 497 | |
| 498 | if (little >= littleend) |
| 499 | return (char*)bigend; |
| 500 | bigbeg = big; |
| 501 | big = bigend - (littleend - little++); |
| 502 | while (big >= bigbeg) { |
| 503 | const char *s, *x; |
| 504 | if (*big-- != first) |
| 505 | continue; |
| 506 | for (x=big+2,s=little; s < littleend; /**/ ) { |
| 507 | if (*s != *x) |
| 508 | break; |
| 509 | else { |
| 510 | x++; |
| 511 | s++; |
| 512 | } |
| 513 | } |
| 514 | if (s >= littleend) |
| 515 | return (char*)(big+1); |
| 516 | } |
| 517 | return NULL; |
| 518 | } |
| 519 | |
| 520 | /* As a space optimization, we do not compile tables for strings of length |
| 521 | 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are |
| 522 | special-cased in fbm_instr(). |
| 523 | |
| 524 | If FBMcf_TAIL, the table is created as if the string has a trailing \n. */ |
| 525 | |
| 526 | /* |
| 527 | =head1 Miscellaneous Functions |
| 528 | |
| 529 | =for apidoc fbm_compile |
| 530 | |
| 531 | Analyses the string in order to make fast searches on it using fbm_instr() |
| 532 | -- the Boyer-Moore algorithm. |
| 533 | |
| 534 | =cut |
| 535 | */ |
| 536 | |
| 537 | void |
| 538 | Perl_fbm_compile(pTHX_ SV *sv, U32 flags) |
| 539 | { |
| 540 | dVAR; |
| 541 | const U8 *s; |
| 542 | STRLEN i; |
| 543 | STRLEN len; |
| 544 | STRLEN rarest = 0; |
| 545 | U32 frequency = 256; |
| 546 | MAGIC *mg; |
| 547 | |
| 548 | PERL_ARGS_ASSERT_FBM_COMPILE; |
| 549 | |
| 550 | if (isGV_with_GP(sv)) |
| 551 | return; |
| 552 | |
| 553 | if (SvVALID(sv)) |
| 554 | return; |
| 555 | |
| 556 | if (flags & FBMcf_TAIL) { |
| 557 | MAGIC * const mg = SvUTF8(sv) && SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_utf8) : NULL; |
| 558 | sv_catpvs(sv, "\n"); /* Taken into account in fbm_instr() */ |
| 559 | if (mg && mg->mg_len >= 0) |
| 560 | mg->mg_len++; |
| 561 | } |
| 562 | s = (U8*)SvPV_force_mutable(sv, len); |
| 563 | if (len == 0) /* TAIL might be on a zero-length string. */ |
| 564 | return; |
| 565 | SvUPGRADE(sv, SVt_PVMG); |
| 566 | SvIOK_off(sv); |
| 567 | SvNOK_off(sv); |
| 568 | SvVALID_on(sv); |
| 569 | |
| 570 | /* "deep magic", the comment used to add. The use of MAGIC itself isn't |
| 571 | really. MAGIC was originally added in 79072805bf63abe5 (perl 5.0 alpha 2) |
| 572 | to call SvVALID_off() if the scalar was assigned to. |
| 573 | |
| 574 | The comment itself (and "deeper magic" below) date back to |
| 575 | 378cc40b38293ffc (perl 2.0). "deep magic" was an annotation on |
| 576 | str->str_pok |= 2; |
| 577 | where the magic (presumably) was that the scalar had a BM table hidden |
| 578 | inside itself. |
| 579 | |
| 580 | As MAGIC is always present on BMs [in Perl 5 :-)], we can use it to store |
| 581 | the table instead of the previous (somewhat hacky) approach of co-opting |
| 582 | the string buffer and storing it after the string. */ |
| 583 | |
| 584 | assert(!mg_find(sv, PERL_MAGIC_bm)); |
| 585 | mg = sv_magicext(sv, NULL, PERL_MAGIC_bm, &PL_vtbl_bm, NULL, 0); |
| 586 | assert(mg); |
| 587 | |
| 588 | if (len > 2) { |
| 589 | /* Shorter strings are special-cased in Perl_fbm_instr(), and don't use |
| 590 | the BM table. */ |
| 591 | const U8 mlen = (len>255) ? 255 : (U8)len; |
| 592 | const unsigned char *const sb = s + len - mlen; /* first char (maybe) */ |
| 593 | U8 *table; |
| 594 | |
| 595 | Newx(table, 256, U8); |
| 596 | memset((void*)table, mlen, 256); |
| 597 | mg->mg_ptr = (char *)table; |
| 598 | mg->mg_len = 256; |
| 599 | |
| 600 | s += len - 1; /* last char */ |
| 601 | i = 0; |
| 602 | while (s >= sb) { |
| 603 | if (table[*s] == mlen) |
| 604 | table[*s] = (U8)i; |
| 605 | s--, i++; |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */ |
| 610 | for (i = 0; i < len; i++) { |
| 611 | if (PL_freq[s[i]] < frequency) { |
| 612 | rarest = i; |
| 613 | frequency = PL_freq[s[i]]; |
| 614 | } |
| 615 | } |
| 616 | BmRARE(sv) = s[rarest]; |
| 617 | BmPREVIOUS(sv) = rarest; |
| 618 | BmUSEFUL(sv) = 100; /* Initial value */ |
| 619 | if (flags & FBMcf_TAIL) |
| 620 | SvTAIL_on(sv); |
| 621 | DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %"UVuf"\n", |
| 622 | BmRARE(sv), BmPREVIOUS(sv))); |
| 623 | } |
| 624 | |
| 625 | /* If SvTAIL(littlestr), it has a fake '\n' at end. */ |
| 626 | /* If SvTAIL is actually due to \Z or \z, this gives false positives |
| 627 | if multiline */ |
| 628 | |
| 629 | /* |
| 630 | =for apidoc fbm_instr |
| 631 | |
| 632 | Returns the location of the SV in the string delimited by C<big> and |
| 633 | C<bigend>. It returns C<NULL> if the string can't be found. The C<sv> |
| 634 | does not have to be fbm_compiled, but the search will not be as fast |
| 635 | then. |
| 636 | |
| 637 | =cut |
| 638 | */ |
| 639 | |
| 640 | char * |
| 641 | Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags) |
| 642 | { |
| 643 | unsigned char *s; |
| 644 | STRLEN l; |
| 645 | const unsigned char *little = (const unsigned char *)SvPV_const(littlestr,l); |
| 646 | STRLEN littlelen = l; |
| 647 | const I32 multiline = flags & FBMrf_MULTILINE; |
| 648 | |
| 649 | PERL_ARGS_ASSERT_FBM_INSTR; |
| 650 | |
| 651 | if ((STRLEN)(bigend - big) < littlelen) { |
| 652 | if ( SvTAIL(littlestr) |
| 653 | && ((STRLEN)(bigend - big) == littlelen - 1) |
| 654 | && (littlelen == 1 |
| 655 | || (*big == *little && |
| 656 | memEQ((char *)big, (char *)little, littlelen - 1)))) |
| 657 | return (char*)big; |
| 658 | return NULL; |
| 659 | } |
| 660 | |
| 661 | switch (littlelen) { /* Special cases for 0, 1 and 2 */ |
| 662 | case 0: |
| 663 | return (char*)big; /* Cannot be SvTAIL! */ |
| 664 | case 1: |
| 665 | if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */ |
| 666 | /* Know that bigend != big. */ |
| 667 | if (bigend[-1] == '\n') |
| 668 | return (char *)(bigend - 1); |
| 669 | return (char *) bigend; |
| 670 | } |
| 671 | s = big; |
| 672 | while (s < bigend) { |
| 673 | if (*s == *little) |
| 674 | return (char *)s; |
| 675 | s++; |
| 676 | } |
| 677 | if (SvTAIL(littlestr)) |
| 678 | return (char *) bigend; |
| 679 | return NULL; |
| 680 | case 2: |
| 681 | if (SvTAIL(littlestr) && !multiline) { |
| 682 | if (bigend[-1] == '\n' && bigend[-2] == *little) |
| 683 | return (char*)bigend - 2; |
| 684 | if (bigend[-1] == *little) |
| 685 | return (char*)bigend - 1; |
| 686 | return NULL; |
| 687 | } |
| 688 | { |
| 689 | /* This should be better than FBM if c1 == c2, and almost |
| 690 | as good otherwise: maybe better since we do less indirection. |
| 691 | And we save a lot of memory by caching no table. */ |
| 692 | const unsigned char c1 = little[0]; |
| 693 | const unsigned char c2 = little[1]; |
| 694 | |
| 695 | s = big + 1; |
| 696 | bigend--; |
| 697 | if (c1 != c2) { |
| 698 | while (s <= bigend) { |
| 699 | if (s[0] == c2) { |
| 700 | if (s[-1] == c1) |
| 701 | return (char*)s - 1; |
| 702 | s += 2; |
| 703 | continue; |
| 704 | } |
| 705 | next_chars: |
| 706 | if (s[0] == c1) { |
| 707 | if (s == bigend) |
| 708 | goto check_1char_anchor; |
| 709 | if (s[1] == c2) |
| 710 | return (char*)s; |
| 711 | else { |
| 712 | s++; |
| 713 | goto next_chars; |
| 714 | } |
| 715 | } |
| 716 | else |
| 717 | s += 2; |
| 718 | } |
| 719 | goto check_1char_anchor; |
| 720 | } |
| 721 | /* Now c1 == c2 */ |
| 722 | while (s <= bigend) { |
| 723 | if (s[0] == c1) { |
| 724 | if (s[-1] == c1) |
| 725 | return (char*)s - 1; |
| 726 | if (s == bigend) |
| 727 | goto check_1char_anchor; |
| 728 | if (s[1] == c1) |
| 729 | return (char*)s; |
| 730 | s += 3; |
| 731 | } |
| 732 | else |
| 733 | s += 2; |
| 734 | } |
| 735 | } |
| 736 | check_1char_anchor: /* One char and anchor! */ |
| 737 | if (SvTAIL(littlestr) && (*bigend == *little)) |
| 738 | return (char *)bigend; /* bigend is already decremented. */ |
| 739 | return NULL; |
| 740 | default: |
| 741 | break; /* Only lengths 0 1 and 2 have special-case code. */ |
| 742 | } |
| 743 | |
| 744 | if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */ |
| 745 | s = bigend - littlelen; |
| 746 | if (s >= big && bigend[-1] == '\n' && *s == *little |
| 747 | /* Automatically of length > 2 */ |
| 748 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) |
| 749 | { |
| 750 | return (char*)s; /* how sweet it is */ |
| 751 | } |
| 752 | if (s[1] == *little |
| 753 | && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2)) |
| 754 | { |
| 755 | return (char*)s + 1; /* how sweet it is */ |
| 756 | } |
| 757 | return NULL; |
| 758 | } |
| 759 | if (!SvVALID(littlestr)) { |
| 760 | char * const b = ninstr((char*)big,(char*)bigend, |
| 761 | (char*)little, (char*)little + littlelen); |
| 762 | |
| 763 | if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */ |
| 764 | /* Chop \n from littlestr: */ |
| 765 | s = bigend - littlelen + 1; |
| 766 | if (*s == *little |
| 767 | && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2)) |
| 768 | { |
| 769 | return (char*)s; |
| 770 | } |
| 771 | return NULL; |
| 772 | } |
| 773 | return b; |
| 774 | } |
| 775 | |
| 776 | /* Do actual FBM. */ |
| 777 | if (littlelen > (STRLEN)(bigend - big)) |
| 778 | return NULL; |
| 779 | |
| 780 | { |
| 781 | const MAGIC *const mg = mg_find(littlestr, PERL_MAGIC_bm); |
| 782 | const unsigned char * const table = (const unsigned char *) mg->mg_ptr; |
| 783 | const unsigned char *oldlittle; |
| 784 | |
| 785 | --littlelen; /* Last char found by table lookup */ |
| 786 | |
| 787 | s = big + littlelen; |
| 788 | little += littlelen; /* last char */ |
| 789 | oldlittle = little; |
| 790 | if (s < bigend) { |
| 791 | I32 tmp; |
| 792 | |
| 793 | top2: |
| 794 | if ((tmp = table[*s])) { |
| 795 | if ((s += tmp) < bigend) |
| 796 | goto top2; |
| 797 | goto check_end; |
| 798 | } |
| 799 | else { /* less expensive than calling strncmp() */ |
| 800 | unsigned char * const olds = s; |
| 801 | |
| 802 | tmp = littlelen; |
| 803 | |
| 804 | while (tmp--) { |
| 805 | if (*--s == *--little) |
| 806 | continue; |
| 807 | s = olds + 1; /* here we pay the price for failure */ |
| 808 | little = oldlittle; |
| 809 | if (s < bigend) /* fake up continue to outer loop */ |
| 810 | goto top2; |
| 811 | goto check_end; |
| 812 | } |
| 813 | return (char *)s; |
| 814 | } |
| 815 | } |
| 816 | check_end: |
| 817 | if ( s == bigend |
| 818 | && SvTAIL(littlestr) |
| 819 | && memEQ((char *)(bigend - littlelen), |
| 820 | (char *)(oldlittle - littlelen), littlelen) ) |
| 821 | return (char*)bigend - littlelen; |
| 822 | return NULL; |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | char * |
| 827 | Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last) |
| 828 | { |
| 829 | dVAR; |
| 830 | PERL_ARGS_ASSERT_SCREAMINSTR; |
| 831 | PERL_UNUSED_ARG(bigstr); |
| 832 | PERL_UNUSED_ARG(littlestr); |
| 833 | PERL_UNUSED_ARG(start_shift); |
| 834 | PERL_UNUSED_ARG(end_shift); |
| 835 | PERL_UNUSED_ARG(old_posp); |
| 836 | PERL_UNUSED_ARG(last); |
| 837 | |
| 838 | /* This function must only ever be called on a scalar with study magic, |
| 839 | but those do not happen any more. */ |
| 840 | Perl_croak(aTHX_ "panic: screaminstr"); |
| 841 | return NULL; |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | =for apidoc foldEQ |
| 846 | |
| 847 | Returns true if the leading len bytes of the strings s1 and s2 are the same |
| 848 | case-insensitively; false otherwise. Uppercase and lowercase ASCII range bytes |
| 849 | match themselves and their opposite case counterparts. Non-cased and non-ASCII |
| 850 | range bytes match only themselves. |
| 851 | |
| 852 | =cut |
| 853 | */ |
| 854 | |
| 855 | |
| 856 | I32 |
| 857 | Perl_foldEQ(const char *s1, const char *s2, register I32 len) |
| 858 | { |
| 859 | const U8 *a = (const U8 *)s1; |
| 860 | const U8 *b = (const U8 *)s2; |
| 861 | |
| 862 | PERL_ARGS_ASSERT_FOLDEQ; |
| 863 | |
| 864 | assert(len >= 0); |
| 865 | |
| 866 | while (len--) { |
| 867 | if (*a != *b && *a != PL_fold[*b]) |
| 868 | return 0; |
| 869 | a++,b++; |
| 870 | } |
| 871 | return 1; |
| 872 | } |
| 873 | I32 |
| 874 | Perl_foldEQ_latin1(const char *s1, const char *s2, register I32 len) |
| 875 | { |
| 876 | /* Compare non-utf8 using Unicode (Latin1) semantics. Does not work on |
| 877 | * MICRO_SIGN, LATIN_SMALL_LETTER_SHARP_S, nor |
| 878 | * LATIN_SMALL_LETTER_Y_WITH_DIAERESIS, and does not check for these. Nor |
| 879 | * does it check that the strings each have at least 'len' characters */ |
| 880 | |
| 881 | const U8 *a = (const U8 *)s1; |
| 882 | const U8 *b = (const U8 *)s2; |
| 883 | |
| 884 | PERL_ARGS_ASSERT_FOLDEQ_LATIN1; |
| 885 | |
| 886 | assert(len >= 0); |
| 887 | |
| 888 | while (len--) { |
| 889 | if (*a != *b && *a != PL_fold_latin1[*b]) { |
| 890 | return 0; |
| 891 | } |
| 892 | a++, b++; |
| 893 | } |
| 894 | return 1; |
| 895 | } |
| 896 | |
| 897 | /* |
| 898 | =for apidoc foldEQ_locale |
| 899 | |
| 900 | Returns true if the leading len bytes of the strings s1 and s2 are the same |
| 901 | case-insensitively in the current locale; false otherwise. |
| 902 | |
| 903 | =cut |
| 904 | */ |
| 905 | |
| 906 | I32 |
| 907 | Perl_foldEQ_locale(const char *s1, const char *s2, register I32 len) |
| 908 | { |
| 909 | dVAR; |
| 910 | const U8 *a = (const U8 *)s1; |
| 911 | const U8 *b = (const U8 *)s2; |
| 912 | |
| 913 | PERL_ARGS_ASSERT_FOLDEQ_LOCALE; |
| 914 | |
| 915 | assert(len >= 0); |
| 916 | |
| 917 | while (len--) { |
| 918 | if (*a != *b && *a != PL_fold_locale[*b]) |
| 919 | return 0; |
| 920 | a++,b++; |
| 921 | } |
| 922 | return 1; |
| 923 | } |
| 924 | |
| 925 | /* copy a string to a safe spot */ |
| 926 | |
| 927 | /* |
| 928 | =head1 Memory Management |
| 929 | |
| 930 | =for apidoc savepv |
| 931 | |
| 932 | Perl's version of C<strdup()>. Returns a pointer to a newly allocated |
| 933 | string which is a duplicate of C<pv>. The size of the string is |
| 934 | determined by C<strlen()>. The memory allocated for the new string can |
| 935 | be freed with the C<Safefree()> function. |
| 936 | |
| 937 | =cut |
| 938 | */ |
| 939 | |
| 940 | char * |
| 941 | Perl_savepv(pTHX_ const char *pv) |
| 942 | { |
| 943 | PERL_UNUSED_CONTEXT; |
| 944 | if (!pv) |
| 945 | return NULL; |
| 946 | else { |
| 947 | char *newaddr; |
| 948 | const STRLEN pvlen = strlen(pv)+1; |
| 949 | Newx(newaddr, pvlen, char); |
| 950 | return (char*)memcpy(newaddr, pv, pvlen); |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | /* same thing but with a known length */ |
| 955 | |
| 956 | /* |
| 957 | =for apidoc savepvn |
| 958 | |
| 959 | Perl's version of what C<strndup()> would be if it existed. Returns a |
| 960 | pointer to a newly allocated string which is a duplicate of the first |
| 961 | C<len> bytes from C<pv>, plus a trailing NUL byte. The memory allocated for |
| 962 | the new string can be freed with the C<Safefree()> function. |
| 963 | |
| 964 | =cut |
| 965 | */ |
| 966 | |
| 967 | char * |
| 968 | Perl_savepvn(pTHX_ const char *pv, register I32 len) |
| 969 | { |
| 970 | char *newaddr; |
| 971 | PERL_UNUSED_CONTEXT; |
| 972 | |
| 973 | assert(len >= 0); |
| 974 | |
| 975 | Newx(newaddr,len+1,char); |
| 976 | /* Give a meaning to NULL pointer mainly for the use in sv_magic() */ |
| 977 | if (pv) { |
| 978 | /* might not be null terminated */ |
| 979 | newaddr[len] = '\0'; |
| 980 | return (char *) CopyD(pv,newaddr,len,char); |
| 981 | } |
| 982 | else { |
| 983 | return (char *) ZeroD(newaddr,len+1,char); |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | /* |
| 988 | =for apidoc savesharedpv |
| 989 | |
| 990 | A version of C<savepv()> which allocates the duplicate string in memory |
| 991 | which is shared between threads. |
| 992 | |
| 993 | =cut |
| 994 | */ |
| 995 | char * |
| 996 | Perl_savesharedpv(pTHX_ const char *pv) |
| 997 | { |
| 998 | char *newaddr; |
| 999 | STRLEN pvlen; |
| 1000 | if (!pv) |
| 1001 | return NULL; |
| 1002 | |
| 1003 | pvlen = strlen(pv)+1; |
| 1004 | newaddr = (char*)PerlMemShared_malloc(pvlen); |
| 1005 | if (!newaddr) { |
| 1006 | croak_no_mem(); |
| 1007 | } |
| 1008 | return (char*)memcpy(newaddr, pv, pvlen); |
| 1009 | } |
| 1010 | |
| 1011 | /* |
| 1012 | =for apidoc savesharedpvn |
| 1013 | |
| 1014 | A version of C<savepvn()> which allocates the duplicate string in memory |
| 1015 | which is shared between threads. (With the specific difference that a NULL |
| 1016 | pointer is not acceptable) |
| 1017 | |
| 1018 | =cut |
| 1019 | */ |
| 1020 | char * |
| 1021 | Perl_savesharedpvn(pTHX_ const char *const pv, const STRLEN len) |
| 1022 | { |
| 1023 | char *const newaddr = (char*)PerlMemShared_malloc(len + 1); |
| 1024 | |
| 1025 | /* PERL_ARGS_ASSERT_SAVESHAREDPVN; */ |
| 1026 | |
| 1027 | if (!newaddr) { |
| 1028 | croak_no_mem(); |
| 1029 | } |
| 1030 | newaddr[len] = '\0'; |
| 1031 | return (char*)memcpy(newaddr, pv, len); |
| 1032 | } |
| 1033 | |
| 1034 | /* |
| 1035 | =for apidoc savesvpv |
| 1036 | |
| 1037 | A version of C<savepv()>/C<savepvn()> which gets the string to duplicate from |
| 1038 | the passed in SV using C<SvPV()> |
| 1039 | |
| 1040 | =cut |
| 1041 | */ |
| 1042 | |
| 1043 | char * |
| 1044 | Perl_savesvpv(pTHX_ SV *sv) |
| 1045 | { |
| 1046 | STRLEN len; |
| 1047 | const char * const pv = SvPV_const(sv, len); |
| 1048 | char *newaddr; |
| 1049 | |
| 1050 | PERL_ARGS_ASSERT_SAVESVPV; |
| 1051 | |
| 1052 | ++len; |
| 1053 | Newx(newaddr,len,char); |
| 1054 | return (char *) CopyD(pv,newaddr,len,char); |
| 1055 | } |
| 1056 | |
| 1057 | /* |
| 1058 | =for apidoc savesharedsvpv |
| 1059 | |
| 1060 | A version of C<savesharedpv()> which allocates the duplicate string in |
| 1061 | memory which is shared between threads. |
| 1062 | |
| 1063 | =cut |
| 1064 | */ |
| 1065 | |
| 1066 | char * |
| 1067 | Perl_savesharedsvpv(pTHX_ SV *sv) |
| 1068 | { |
| 1069 | STRLEN len; |
| 1070 | const char * const pv = SvPV_const(sv, len); |
| 1071 | |
| 1072 | PERL_ARGS_ASSERT_SAVESHAREDSVPV; |
| 1073 | |
| 1074 | return savesharedpvn(pv, len); |
| 1075 | } |
| 1076 | |
| 1077 | /* the SV for Perl_form() and mess() is not kept in an arena */ |
| 1078 | |
| 1079 | STATIC SV * |
| 1080 | S_mess_alloc(pTHX) |
| 1081 | { |
| 1082 | dVAR; |
| 1083 | SV *sv; |
| 1084 | XPVMG *any; |
| 1085 | |
| 1086 | if (PL_phase != PERL_PHASE_DESTRUCT) |
| 1087 | return newSVpvs_flags("", SVs_TEMP); |
| 1088 | |
| 1089 | if (PL_mess_sv) |
| 1090 | return PL_mess_sv; |
| 1091 | |
| 1092 | /* Create as PVMG now, to avoid any upgrading later */ |
| 1093 | Newx(sv, 1, SV); |
| 1094 | Newxz(any, 1, XPVMG); |
| 1095 | SvFLAGS(sv) = SVt_PVMG; |
| 1096 | SvANY(sv) = (void*)any; |
| 1097 | SvPV_set(sv, NULL); |
| 1098 | SvREFCNT(sv) = 1 << 30; /* practically infinite */ |
| 1099 | PL_mess_sv = sv; |
| 1100 | return sv; |
| 1101 | } |
| 1102 | |
| 1103 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1104 | char * |
| 1105 | Perl_form_nocontext(const char* pat, ...) |
| 1106 | { |
| 1107 | dTHX; |
| 1108 | char *retval; |
| 1109 | va_list args; |
| 1110 | PERL_ARGS_ASSERT_FORM_NOCONTEXT; |
| 1111 | va_start(args, pat); |
| 1112 | retval = vform(pat, &args); |
| 1113 | va_end(args); |
| 1114 | return retval; |
| 1115 | } |
| 1116 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1117 | |
| 1118 | /* |
| 1119 | =head1 Miscellaneous Functions |
| 1120 | =for apidoc form |
| 1121 | |
| 1122 | Takes a sprintf-style format pattern and conventional |
| 1123 | (non-SV) arguments and returns the formatted string. |
| 1124 | |
| 1125 | (char *) Perl_form(pTHX_ const char* pat, ...) |
| 1126 | |
| 1127 | can be used any place a string (char *) is required: |
| 1128 | |
| 1129 | char * s = Perl_form("%d.%d",major,minor); |
| 1130 | |
| 1131 | Uses a single private buffer so if you want to format several strings you |
| 1132 | must explicitly copy the earlier strings away (and free the copies when you |
| 1133 | are done). |
| 1134 | |
| 1135 | =cut |
| 1136 | */ |
| 1137 | |
| 1138 | char * |
| 1139 | Perl_form(pTHX_ const char* pat, ...) |
| 1140 | { |
| 1141 | char *retval; |
| 1142 | va_list args; |
| 1143 | PERL_ARGS_ASSERT_FORM; |
| 1144 | va_start(args, pat); |
| 1145 | retval = vform(pat, &args); |
| 1146 | va_end(args); |
| 1147 | return retval; |
| 1148 | } |
| 1149 | |
| 1150 | char * |
| 1151 | Perl_vform(pTHX_ const char *pat, va_list *args) |
| 1152 | { |
| 1153 | SV * const sv = mess_alloc(); |
| 1154 | PERL_ARGS_ASSERT_VFORM; |
| 1155 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
| 1156 | return SvPVX(sv); |
| 1157 | } |
| 1158 | |
| 1159 | /* |
| 1160 | =for apidoc Am|SV *|mess|const char *pat|... |
| 1161 | |
| 1162 | Take a sprintf-style format pattern and argument list. These are used to |
| 1163 | generate a string message. If the message does not end with a newline, |
| 1164 | then it will be extended with some indication of the current location |
| 1165 | in the code, as described for L</mess_sv>. |
| 1166 | |
| 1167 | Normally, the resulting message is returned in a new mortal SV. |
| 1168 | During global destruction a single SV may be shared between uses of |
| 1169 | this function. |
| 1170 | |
| 1171 | =cut |
| 1172 | */ |
| 1173 | |
| 1174 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1175 | SV * |
| 1176 | Perl_mess_nocontext(const char *pat, ...) |
| 1177 | { |
| 1178 | dTHX; |
| 1179 | SV *retval; |
| 1180 | va_list args; |
| 1181 | PERL_ARGS_ASSERT_MESS_NOCONTEXT; |
| 1182 | va_start(args, pat); |
| 1183 | retval = vmess(pat, &args); |
| 1184 | va_end(args); |
| 1185 | return retval; |
| 1186 | } |
| 1187 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1188 | |
| 1189 | SV * |
| 1190 | Perl_mess(pTHX_ const char *pat, ...) |
| 1191 | { |
| 1192 | SV *retval; |
| 1193 | va_list args; |
| 1194 | PERL_ARGS_ASSERT_MESS; |
| 1195 | va_start(args, pat); |
| 1196 | retval = vmess(pat, &args); |
| 1197 | va_end(args); |
| 1198 | return retval; |
| 1199 | } |
| 1200 | |
| 1201 | STATIC const COP* |
| 1202 | S_closest_cop(pTHX_ const COP *cop, const OP *o) |
| 1203 | { |
| 1204 | dVAR; |
| 1205 | /* Look for PL_op starting from o. cop is the last COP we've seen. */ |
| 1206 | |
| 1207 | PERL_ARGS_ASSERT_CLOSEST_COP; |
| 1208 | |
| 1209 | if (!o || o == PL_op) |
| 1210 | return cop; |
| 1211 | |
| 1212 | if (o->op_flags & OPf_KIDS) { |
| 1213 | const OP *kid; |
| 1214 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
| 1215 | const COP *new_cop; |
| 1216 | |
| 1217 | /* If the OP_NEXTSTATE has been optimised away we can still use it |
| 1218 | * the get the file and line number. */ |
| 1219 | |
| 1220 | if (kid->op_type == OP_NULL && kid->op_targ == OP_NEXTSTATE) |
| 1221 | cop = (const COP *)kid; |
| 1222 | |
| 1223 | /* Keep searching, and return when we've found something. */ |
| 1224 | |
| 1225 | new_cop = closest_cop(cop, kid); |
| 1226 | if (new_cop) |
| 1227 | return new_cop; |
| 1228 | } |
| 1229 | } |
| 1230 | |
| 1231 | /* Nothing found. */ |
| 1232 | |
| 1233 | return NULL; |
| 1234 | } |
| 1235 | |
| 1236 | /* |
| 1237 | =for apidoc Am|SV *|mess_sv|SV *basemsg|bool consume |
| 1238 | |
| 1239 | Expands a message, intended for the user, to include an indication of |
| 1240 | the current location in the code, if the message does not already appear |
| 1241 | to be complete. |
| 1242 | |
| 1243 | C<basemsg> is the initial message or object. If it is a reference, it |
| 1244 | will be used as-is and will be the result of this function. Otherwise it |
| 1245 | is used as a string, and if it already ends with a newline, it is taken |
| 1246 | to be complete, and the result of this function will be the same string. |
| 1247 | If the message does not end with a newline, then a segment such as C<at |
| 1248 | foo.pl line 37> will be appended, and possibly other clauses indicating |
| 1249 | the current state of execution. The resulting message will end with a |
| 1250 | dot and a newline. |
| 1251 | |
| 1252 | Normally, the resulting message is returned in a new mortal SV. |
| 1253 | During global destruction a single SV may be shared between uses of this |
| 1254 | function. If C<consume> is true, then the function is permitted (but not |
| 1255 | required) to modify and return C<basemsg> instead of allocating a new SV. |
| 1256 | |
| 1257 | =cut |
| 1258 | */ |
| 1259 | |
| 1260 | SV * |
| 1261 | Perl_mess_sv(pTHX_ SV *basemsg, bool consume) |
| 1262 | { |
| 1263 | dVAR; |
| 1264 | SV *sv; |
| 1265 | |
| 1266 | PERL_ARGS_ASSERT_MESS_SV; |
| 1267 | |
| 1268 | if (SvROK(basemsg)) { |
| 1269 | if (consume) { |
| 1270 | sv = basemsg; |
| 1271 | } |
| 1272 | else { |
| 1273 | sv = mess_alloc(); |
| 1274 | sv_setsv(sv, basemsg); |
| 1275 | } |
| 1276 | return sv; |
| 1277 | } |
| 1278 | |
| 1279 | if (SvPOK(basemsg) && consume) { |
| 1280 | sv = basemsg; |
| 1281 | } |
| 1282 | else { |
| 1283 | sv = mess_alloc(); |
| 1284 | sv_copypv(sv, basemsg); |
| 1285 | } |
| 1286 | |
| 1287 | if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') { |
| 1288 | /* |
| 1289 | * Try and find the file and line for PL_op. This will usually be |
| 1290 | * PL_curcop, but it might be a cop that has been optimised away. We |
| 1291 | * can try to find such a cop by searching through the optree starting |
| 1292 | * from the sibling of PL_curcop. |
| 1293 | */ |
| 1294 | |
| 1295 | const COP *cop = closest_cop(PL_curcop, PL_curcop->op_sibling); |
| 1296 | if (!cop) |
| 1297 | cop = PL_curcop; |
| 1298 | |
| 1299 | if (CopLINE(cop)) |
| 1300 | Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf, |
| 1301 | OutCopFILE(cop), (IV)CopLINE(cop)); |
| 1302 | /* Seems that GvIO() can be untrustworthy during global destruction. */ |
| 1303 | if (GvIO(PL_last_in_gv) && (SvTYPE(GvIOp(PL_last_in_gv)) == SVt_PVIO) |
| 1304 | && IoLINES(GvIOp(PL_last_in_gv))) |
| 1305 | { |
| 1306 | STRLEN l; |
| 1307 | const bool line_mode = (RsSIMPLE(PL_rs) && |
| 1308 | *SvPV_const(PL_rs,l) == '\n' && l == 1); |
| 1309 | Perl_sv_catpvf(aTHX_ sv, ", <%"SVf"> %s %"IVdf, |
| 1310 | SVfARG(PL_last_in_gv == PL_argvgv |
| 1311 | ? &PL_sv_no |
| 1312 | : sv_2mortal(newSVhek(GvNAME_HEK(PL_last_in_gv)))), |
| 1313 | line_mode ? "line" : "chunk", |
| 1314 | (IV)IoLINES(GvIOp(PL_last_in_gv))); |
| 1315 | } |
| 1316 | if (PL_phase == PERL_PHASE_DESTRUCT) |
| 1317 | sv_catpvs(sv, " during global destruction"); |
| 1318 | sv_catpvs(sv, ".\n"); |
| 1319 | } |
| 1320 | return sv; |
| 1321 | } |
| 1322 | |
| 1323 | /* |
| 1324 | =for apidoc Am|SV *|vmess|const char *pat|va_list *args |
| 1325 | |
| 1326 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated |
| 1327 | argument list. These are used to generate a string message. If the |
| 1328 | message does not end with a newline, then it will be extended with |
| 1329 | some indication of the current location in the code, as described for |
| 1330 | L</mess_sv>. |
| 1331 | |
| 1332 | Normally, the resulting message is returned in a new mortal SV. |
| 1333 | During global destruction a single SV may be shared between uses of |
| 1334 | this function. |
| 1335 | |
| 1336 | =cut |
| 1337 | */ |
| 1338 | |
| 1339 | SV * |
| 1340 | Perl_vmess(pTHX_ const char *pat, va_list *args) |
| 1341 | { |
| 1342 | dVAR; |
| 1343 | SV * const sv = mess_alloc(); |
| 1344 | |
| 1345 | PERL_ARGS_ASSERT_VMESS; |
| 1346 | |
| 1347 | sv_vsetpvfn(sv, pat, strlen(pat), args, NULL, 0, NULL); |
| 1348 | return mess_sv(sv, 1); |
| 1349 | } |
| 1350 | |
| 1351 | void |
| 1352 | Perl_write_to_stderr(pTHX_ SV* msv) |
| 1353 | { |
| 1354 | dVAR; |
| 1355 | IO *io; |
| 1356 | MAGIC *mg; |
| 1357 | |
| 1358 | PERL_ARGS_ASSERT_WRITE_TO_STDERR; |
| 1359 | |
| 1360 | if (PL_stderrgv && SvREFCNT(PL_stderrgv) |
| 1361 | && (io = GvIO(PL_stderrgv)) |
| 1362 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
| 1363 | Perl_magic_methcall(aTHX_ MUTABLE_SV(io), mg, "PRINT", |
| 1364 | G_SCALAR | G_DISCARD | G_WRITING_TO_STDERR, 1, msv); |
| 1365 | else { |
| 1366 | #ifdef USE_SFIO |
| 1367 | /* SFIO can really mess with your errno */ |
| 1368 | dSAVED_ERRNO; |
| 1369 | #endif |
| 1370 | PerlIO * const serr = Perl_error_log; |
| 1371 | |
| 1372 | do_print(msv, serr); |
| 1373 | (void)PerlIO_flush(serr); |
| 1374 | #ifdef USE_SFIO |
| 1375 | RESTORE_ERRNO; |
| 1376 | #endif |
| 1377 | } |
| 1378 | } |
| 1379 | |
| 1380 | /* |
| 1381 | =head1 Warning and Dieing |
| 1382 | */ |
| 1383 | |
| 1384 | /* Common code used in dieing and warning */ |
| 1385 | |
| 1386 | STATIC SV * |
| 1387 | S_with_queued_errors(pTHX_ SV *ex) |
| 1388 | { |
| 1389 | PERL_ARGS_ASSERT_WITH_QUEUED_ERRORS; |
| 1390 | if (PL_errors && SvCUR(PL_errors) && !SvROK(ex)) { |
| 1391 | sv_catsv(PL_errors, ex); |
| 1392 | ex = sv_mortalcopy(PL_errors); |
| 1393 | SvCUR_set(PL_errors, 0); |
| 1394 | } |
| 1395 | return ex; |
| 1396 | } |
| 1397 | |
| 1398 | STATIC bool |
| 1399 | S_invoke_exception_hook(pTHX_ SV *ex, bool warn) |
| 1400 | { |
| 1401 | dVAR; |
| 1402 | HV *stash; |
| 1403 | GV *gv; |
| 1404 | CV *cv; |
| 1405 | SV **const hook = warn ? &PL_warnhook : &PL_diehook; |
| 1406 | /* sv_2cv might call Perl_croak() or Perl_warner() */ |
| 1407 | SV * const oldhook = *hook; |
| 1408 | |
| 1409 | if (!oldhook) |
| 1410 | return FALSE; |
| 1411 | |
| 1412 | ENTER; |
| 1413 | SAVESPTR(*hook); |
| 1414 | *hook = NULL; |
| 1415 | cv = sv_2cv(oldhook, &stash, &gv, 0); |
| 1416 | LEAVE; |
| 1417 | if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) { |
| 1418 | dSP; |
| 1419 | SV *exarg; |
| 1420 | |
| 1421 | ENTER; |
| 1422 | save_re_context(); |
| 1423 | if (warn) { |
| 1424 | SAVESPTR(*hook); |
| 1425 | *hook = NULL; |
| 1426 | } |
| 1427 | exarg = newSVsv(ex); |
| 1428 | SvREADONLY_on(exarg); |
| 1429 | SAVEFREESV(exarg); |
| 1430 | |
| 1431 | PUSHSTACKi(warn ? PERLSI_WARNHOOK : PERLSI_DIEHOOK); |
| 1432 | PUSHMARK(SP); |
| 1433 | XPUSHs(exarg); |
| 1434 | PUTBACK; |
| 1435 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
| 1436 | POPSTACK; |
| 1437 | LEAVE; |
| 1438 | return TRUE; |
| 1439 | } |
| 1440 | return FALSE; |
| 1441 | } |
| 1442 | |
| 1443 | /* |
| 1444 | =for apidoc Am|OP *|die_sv|SV *baseex |
| 1445 | |
| 1446 | Behaves the same as L</croak_sv>, except for the return type. |
| 1447 | It should be used only where the C<OP *> return type is required. |
| 1448 | The function never actually returns. |
| 1449 | |
| 1450 | =cut |
| 1451 | */ |
| 1452 | |
| 1453 | OP * |
| 1454 | Perl_die_sv(pTHX_ SV *baseex) |
| 1455 | { |
| 1456 | PERL_ARGS_ASSERT_DIE_SV; |
| 1457 | croak_sv(baseex); |
| 1458 | assert(0); /* NOTREACHED */ |
| 1459 | return NULL; |
| 1460 | } |
| 1461 | |
| 1462 | /* |
| 1463 | =for apidoc Am|OP *|die|const char *pat|... |
| 1464 | |
| 1465 | Behaves the same as L</croak>, except for the return type. |
| 1466 | It should be used only where the C<OP *> return type is required. |
| 1467 | The function never actually returns. |
| 1468 | |
| 1469 | =cut |
| 1470 | */ |
| 1471 | |
| 1472 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1473 | OP * |
| 1474 | Perl_die_nocontext(const char* pat, ...) |
| 1475 | { |
| 1476 | dTHX; |
| 1477 | va_list args; |
| 1478 | va_start(args, pat); |
| 1479 | vcroak(pat, &args); |
| 1480 | assert(0); /* NOTREACHED */ |
| 1481 | va_end(args); |
| 1482 | return NULL; |
| 1483 | } |
| 1484 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1485 | |
| 1486 | OP * |
| 1487 | Perl_die(pTHX_ const char* pat, ...) |
| 1488 | { |
| 1489 | va_list args; |
| 1490 | va_start(args, pat); |
| 1491 | vcroak(pat, &args); |
| 1492 | assert(0); /* NOTREACHED */ |
| 1493 | va_end(args); |
| 1494 | return NULL; |
| 1495 | } |
| 1496 | |
| 1497 | /* |
| 1498 | =for apidoc Am|void|croak_sv|SV *baseex |
| 1499 | |
| 1500 | This is an XS interface to Perl's C<die> function. |
| 1501 | |
| 1502 | C<baseex> is the error message or object. If it is a reference, it |
| 1503 | will be used as-is. Otherwise it is used as a string, and if it does |
| 1504 | not end with a newline then it will be extended with some indication of |
| 1505 | the current location in the code, as described for L</mess_sv>. |
| 1506 | |
| 1507 | The error message or object will be used as an exception, by default |
| 1508 | returning control to the nearest enclosing C<eval>, but subject to |
| 1509 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak_sv> |
| 1510 | function never returns normally. |
| 1511 | |
| 1512 | To die with a simple string message, the L</croak> function may be |
| 1513 | more convenient. |
| 1514 | |
| 1515 | =cut |
| 1516 | */ |
| 1517 | |
| 1518 | void |
| 1519 | Perl_croak_sv(pTHX_ SV *baseex) |
| 1520 | { |
| 1521 | SV *ex = with_queued_errors(mess_sv(baseex, 0)); |
| 1522 | PERL_ARGS_ASSERT_CROAK_SV; |
| 1523 | invoke_exception_hook(ex, FALSE); |
| 1524 | die_unwind(ex); |
| 1525 | } |
| 1526 | |
| 1527 | /* |
| 1528 | =for apidoc Am|void|vcroak|const char *pat|va_list *args |
| 1529 | |
| 1530 | This is an XS interface to Perl's C<die> function. |
| 1531 | |
| 1532 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated |
| 1533 | argument list. These are used to generate a string message. If the |
| 1534 | message does not end with a newline, then it will be extended with |
| 1535 | some indication of the current location in the code, as described for |
| 1536 | L</mess_sv>. |
| 1537 | |
| 1538 | The error message will be used as an exception, by default |
| 1539 | returning control to the nearest enclosing C<eval>, but subject to |
| 1540 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak> |
| 1541 | function never returns normally. |
| 1542 | |
| 1543 | For historical reasons, if C<pat> is null then the contents of C<ERRSV> |
| 1544 | (C<$@>) will be used as an error message or object instead of building an |
| 1545 | error message from arguments. If you want to throw a non-string object, |
| 1546 | or build an error message in an SV yourself, it is preferable to use |
| 1547 | the L</croak_sv> function, which does not involve clobbering C<ERRSV>. |
| 1548 | |
| 1549 | =cut |
| 1550 | */ |
| 1551 | |
| 1552 | void |
| 1553 | Perl_vcroak(pTHX_ const char* pat, va_list *args) |
| 1554 | { |
| 1555 | SV *ex = with_queued_errors(pat ? vmess(pat, args) : mess_sv(ERRSV, 0)); |
| 1556 | invoke_exception_hook(ex, FALSE); |
| 1557 | die_unwind(ex); |
| 1558 | } |
| 1559 | |
| 1560 | /* |
| 1561 | =for apidoc Am|void|croak|const char *pat|... |
| 1562 | |
| 1563 | This is an XS interface to Perl's C<die> function. |
| 1564 | |
| 1565 | Take a sprintf-style format pattern and argument list. These are used to |
| 1566 | generate a string message. If the message does not end with a newline, |
| 1567 | then it will be extended with some indication of the current location |
| 1568 | in the code, as described for L</mess_sv>. |
| 1569 | |
| 1570 | The error message will be used as an exception, by default |
| 1571 | returning control to the nearest enclosing C<eval>, but subject to |
| 1572 | modification by a C<$SIG{__DIE__}> handler. In any case, the C<croak> |
| 1573 | function never returns normally. |
| 1574 | |
| 1575 | For historical reasons, if C<pat> is null then the contents of C<ERRSV> |
| 1576 | (C<$@>) will be used as an error message or object instead of building an |
| 1577 | error message from arguments. If you want to throw a non-string object, |
| 1578 | or build an error message in an SV yourself, it is preferable to use |
| 1579 | the L</croak_sv> function, which does not involve clobbering C<ERRSV>. |
| 1580 | |
| 1581 | =cut |
| 1582 | */ |
| 1583 | |
| 1584 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1585 | void |
| 1586 | Perl_croak_nocontext(const char *pat, ...) |
| 1587 | { |
| 1588 | dTHX; |
| 1589 | va_list args; |
| 1590 | va_start(args, pat); |
| 1591 | vcroak(pat, &args); |
| 1592 | assert(0); /* NOTREACHED */ |
| 1593 | va_end(args); |
| 1594 | } |
| 1595 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1596 | |
| 1597 | void |
| 1598 | Perl_croak(pTHX_ const char *pat, ...) |
| 1599 | { |
| 1600 | va_list args; |
| 1601 | va_start(args, pat); |
| 1602 | vcroak(pat, &args); |
| 1603 | assert(0); /* NOTREACHED */ |
| 1604 | va_end(args); |
| 1605 | } |
| 1606 | |
| 1607 | /* |
| 1608 | =for apidoc Am|void|croak_no_modify |
| 1609 | |
| 1610 | Exactly equivalent to C<Perl_croak(aTHX_ "%s", PL_no_modify)>, but generates |
| 1611 | terser object code than using C<Perl_croak>. Less code used on exception code |
| 1612 | paths reduces CPU cache pressure. |
| 1613 | |
| 1614 | =cut |
| 1615 | */ |
| 1616 | |
| 1617 | void |
| 1618 | Perl_croak_no_modify() |
| 1619 | { |
| 1620 | Perl_croak_nocontext( "%s", PL_no_modify); |
| 1621 | } |
| 1622 | |
| 1623 | /* does not return, used in util.c perlio.c and win32.c |
| 1624 | This is typically called when malloc returns NULL. |
| 1625 | */ |
| 1626 | void |
| 1627 | Perl_croak_no_mem() |
| 1628 | { |
| 1629 | dTHX; |
| 1630 | |
| 1631 | /* Can't use PerlIO to write as it allocates memory */ |
| 1632 | PerlLIO_write(PerlIO_fileno(Perl_error_log), |
| 1633 | PL_no_mem, sizeof(PL_no_mem)-1); |
| 1634 | my_exit(1); |
| 1635 | } |
| 1636 | |
| 1637 | /* |
| 1638 | =for apidoc Am|void|warn_sv|SV *baseex |
| 1639 | |
| 1640 | This is an XS interface to Perl's C<warn> function. |
| 1641 | |
| 1642 | C<baseex> is the error message or object. If it is a reference, it |
| 1643 | will be used as-is. Otherwise it is used as a string, and if it does |
| 1644 | not end with a newline then it will be extended with some indication of |
| 1645 | the current location in the code, as described for L</mess_sv>. |
| 1646 | |
| 1647 | The error message or object will by default be written to standard error, |
| 1648 | but this is subject to modification by a C<$SIG{__WARN__}> handler. |
| 1649 | |
| 1650 | To warn with a simple string message, the L</warn> function may be |
| 1651 | more convenient. |
| 1652 | |
| 1653 | =cut |
| 1654 | */ |
| 1655 | |
| 1656 | void |
| 1657 | Perl_warn_sv(pTHX_ SV *baseex) |
| 1658 | { |
| 1659 | SV *ex = mess_sv(baseex, 0); |
| 1660 | PERL_ARGS_ASSERT_WARN_SV; |
| 1661 | if (!invoke_exception_hook(ex, TRUE)) |
| 1662 | write_to_stderr(ex); |
| 1663 | } |
| 1664 | |
| 1665 | /* |
| 1666 | =for apidoc Am|void|vwarn|const char *pat|va_list *args |
| 1667 | |
| 1668 | This is an XS interface to Perl's C<warn> function. |
| 1669 | |
| 1670 | C<pat> and C<args> are a sprintf-style format pattern and encapsulated |
| 1671 | argument list. These are used to generate a string message. If the |
| 1672 | message does not end with a newline, then it will be extended with |
| 1673 | some indication of the current location in the code, as described for |
| 1674 | L</mess_sv>. |
| 1675 | |
| 1676 | The error message or object will by default be written to standard error, |
| 1677 | but this is subject to modification by a C<$SIG{__WARN__}> handler. |
| 1678 | |
| 1679 | Unlike with L</vcroak>, C<pat> is not permitted to be null. |
| 1680 | |
| 1681 | =cut |
| 1682 | */ |
| 1683 | |
| 1684 | void |
| 1685 | Perl_vwarn(pTHX_ const char* pat, va_list *args) |
| 1686 | { |
| 1687 | SV *ex = vmess(pat, args); |
| 1688 | PERL_ARGS_ASSERT_VWARN; |
| 1689 | if (!invoke_exception_hook(ex, TRUE)) |
| 1690 | write_to_stderr(ex); |
| 1691 | } |
| 1692 | |
| 1693 | /* |
| 1694 | =for apidoc Am|void|warn|const char *pat|... |
| 1695 | |
| 1696 | This is an XS interface to Perl's C<warn> function. |
| 1697 | |
| 1698 | Take a sprintf-style format pattern and argument list. These are used to |
| 1699 | generate a string message. If the message does not end with a newline, |
| 1700 | then it will be extended with some indication of the current location |
| 1701 | in the code, as described for L</mess_sv>. |
| 1702 | |
| 1703 | The error message or object will by default be written to standard error, |
| 1704 | but this is subject to modification by a C<$SIG{__WARN__}> handler. |
| 1705 | |
| 1706 | Unlike with L</croak>, C<pat> is not permitted to be null. |
| 1707 | |
| 1708 | =cut |
| 1709 | */ |
| 1710 | |
| 1711 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1712 | void |
| 1713 | Perl_warn_nocontext(const char *pat, ...) |
| 1714 | { |
| 1715 | dTHX; |
| 1716 | va_list args; |
| 1717 | PERL_ARGS_ASSERT_WARN_NOCONTEXT; |
| 1718 | va_start(args, pat); |
| 1719 | vwarn(pat, &args); |
| 1720 | va_end(args); |
| 1721 | } |
| 1722 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1723 | |
| 1724 | void |
| 1725 | Perl_warn(pTHX_ const char *pat, ...) |
| 1726 | { |
| 1727 | va_list args; |
| 1728 | PERL_ARGS_ASSERT_WARN; |
| 1729 | va_start(args, pat); |
| 1730 | vwarn(pat, &args); |
| 1731 | va_end(args); |
| 1732 | } |
| 1733 | |
| 1734 | #if defined(PERL_IMPLICIT_CONTEXT) |
| 1735 | void |
| 1736 | Perl_warner_nocontext(U32 err, const char *pat, ...) |
| 1737 | { |
| 1738 | dTHX; |
| 1739 | va_list args; |
| 1740 | PERL_ARGS_ASSERT_WARNER_NOCONTEXT; |
| 1741 | va_start(args, pat); |
| 1742 | vwarner(err, pat, &args); |
| 1743 | va_end(args); |
| 1744 | } |
| 1745 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 1746 | |
| 1747 | void |
| 1748 | Perl_ck_warner_d(pTHX_ U32 err, const char* pat, ...) |
| 1749 | { |
| 1750 | PERL_ARGS_ASSERT_CK_WARNER_D; |
| 1751 | |
| 1752 | if (Perl_ckwarn_d(aTHX_ err)) { |
| 1753 | va_list args; |
| 1754 | va_start(args, pat); |
| 1755 | vwarner(err, pat, &args); |
| 1756 | va_end(args); |
| 1757 | } |
| 1758 | } |
| 1759 | |
| 1760 | void |
| 1761 | Perl_ck_warner(pTHX_ U32 err, const char* pat, ...) |
| 1762 | { |
| 1763 | PERL_ARGS_ASSERT_CK_WARNER; |
| 1764 | |
| 1765 | if (Perl_ckwarn(aTHX_ err)) { |
| 1766 | va_list args; |
| 1767 | va_start(args, pat); |
| 1768 | vwarner(err, pat, &args); |
| 1769 | va_end(args); |
| 1770 | } |
| 1771 | } |
| 1772 | |
| 1773 | void |
| 1774 | Perl_warner(pTHX_ U32 err, const char* pat,...) |
| 1775 | { |
| 1776 | va_list args; |
| 1777 | PERL_ARGS_ASSERT_WARNER; |
| 1778 | va_start(args, pat); |
| 1779 | vwarner(err, pat, &args); |
| 1780 | va_end(args); |
| 1781 | } |
| 1782 | |
| 1783 | void |
| 1784 | Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args) |
| 1785 | { |
| 1786 | dVAR; |
| 1787 | PERL_ARGS_ASSERT_VWARNER; |
| 1788 | if (PL_warnhook == PERL_WARNHOOK_FATAL || ckDEAD(err)) { |
| 1789 | SV * const msv = vmess(pat, args); |
| 1790 | |
| 1791 | invoke_exception_hook(msv, FALSE); |
| 1792 | die_unwind(msv); |
| 1793 | } |
| 1794 | else { |
| 1795 | Perl_vwarn(aTHX_ pat, args); |
| 1796 | } |
| 1797 | } |
| 1798 | |
| 1799 | /* implements the ckWARN? macros */ |
| 1800 | |
| 1801 | bool |
| 1802 | Perl_ckwarn(pTHX_ U32 w) |
| 1803 | { |
| 1804 | dVAR; |
| 1805 | /* If lexical warnings have not been set, use $^W. */ |
| 1806 | if (isLEXWARN_off) |
| 1807 | return PL_dowarn & G_WARN_ON; |
| 1808 | |
| 1809 | return ckwarn_common(w); |
| 1810 | } |
| 1811 | |
| 1812 | /* implements the ckWARN?_d macro */ |
| 1813 | |
| 1814 | bool |
| 1815 | Perl_ckwarn_d(pTHX_ U32 w) |
| 1816 | { |
| 1817 | dVAR; |
| 1818 | /* If lexical warnings have not been set then default classes warn. */ |
| 1819 | if (isLEXWARN_off) |
| 1820 | return TRUE; |
| 1821 | |
| 1822 | return ckwarn_common(w); |
| 1823 | } |
| 1824 | |
| 1825 | static bool |
| 1826 | S_ckwarn_common(pTHX_ U32 w) |
| 1827 | { |
| 1828 | if (PL_curcop->cop_warnings == pWARN_ALL) |
| 1829 | return TRUE; |
| 1830 | |
| 1831 | if (PL_curcop->cop_warnings == pWARN_NONE) |
| 1832 | return FALSE; |
| 1833 | |
| 1834 | /* Check the assumption that at least the first slot is non-zero. */ |
| 1835 | assert(unpackWARN1(w)); |
| 1836 | |
| 1837 | /* Check the assumption that it is valid to stop as soon as a zero slot is |
| 1838 | seen. */ |
| 1839 | if (!unpackWARN2(w)) { |
| 1840 | assert(!unpackWARN3(w)); |
| 1841 | assert(!unpackWARN4(w)); |
| 1842 | } else if (!unpackWARN3(w)) { |
| 1843 | assert(!unpackWARN4(w)); |
| 1844 | } |
| 1845 | |
| 1846 | /* Right, dealt with all the special cases, which are implemented as non- |
| 1847 | pointers, so there is a pointer to a real warnings mask. */ |
| 1848 | do { |
| 1849 | if (isWARN_on(PL_curcop->cop_warnings, unpackWARN1(w))) |
| 1850 | return TRUE; |
| 1851 | } while (w >>= WARNshift); |
| 1852 | |
| 1853 | return FALSE; |
| 1854 | } |
| 1855 | |
| 1856 | /* Set buffer=NULL to get a new one. */ |
| 1857 | STRLEN * |
| 1858 | Perl_new_warnings_bitfield(pTHX_ STRLEN *buffer, const char *const bits, |
| 1859 | STRLEN size) { |
| 1860 | const MEM_SIZE len_wanted = |
| 1861 | sizeof(STRLEN) + (size > WARNsize ? size : WARNsize); |
| 1862 | PERL_UNUSED_CONTEXT; |
| 1863 | PERL_ARGS_ASSERT_NEW_WARNINGS_BITFIELD; |
| 1864 | |
| 1865 | buffer = (STRLEN*) |
| 1866 | (specialWARN(buffer) ? |
| 1867 | PerlMemShared_malloc(len_wanted) : |
| 1868 | PerlMemShared_realloc(buffer, len_wanted)); |
| 1869 | buffer[0] = size; |
| 1870 | Copy(bits, (buffer + 1), size, char); |
| 1871 | if (size < WARNsize) |
| 1872 | Zero((char *)(buffer + 1) + size, WARNsize - size, char); |
| 1873 | return buffer; |
| 1874 | } |
| 1875 | |
| 1876 | /* since we've already done strlen() for both nam and val |
| 1877 | * we can use that info to make things faster than |
| 1878 | * sprintf(s, "%s=%s", nam, val) |
| 1879 | */ |
| 1880 | #define my_setenv_format(s, nam, nlen, val, vlen) \ |
| 1881 | Copy(nam, s, nlen, char); \ |
| 1882 | *(s+nlen) = '='; \ |
| 1883 | Copy(val, s+(nlen+1), vlen, char); \ |
| 1884 | *(s+(nlen+1+vlen)) = '\0' |
| 1885 | |
| 1886 | #ifdef USE_ENVIRON_ARRAY |
| 1887 | /* VMS' my_setenv() is in vms.c */ |
| 1888 | #if !defined(WIN32) && !defined(NETWARE) |
| 1889 | void |
| 1890 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
| 1891 | { |
| 1892 | dVAR; |
| 1893 | #ifdef USE_ITHREADS |
| 1894 | /* only parent thread can modify process environment */ |
| 1895 | if (PL_curinterp == aTHX) |
| 1896 | #endif |
| 1897 | { |
| 1898 | #ifndef PERL_USE_SAFE_PUTENV |
| 1899 | if (!PL_use_safe_putenv) { |
| 1900 | /* most putenv()s leak, so we manipulate environ directly */ |
| 1901 | I32 i; |
| 1902 | const I32 len = strlen(nam); |
| 1903 | int nlen, vlen; |
| 1904 | |
| 1905 | /* where does it go? */ |
| 1906 | for (i = 0; environ[i]; i++) { |
| 1907 | if (strnEQ(environ[i],nam,len) && environ[i][len] == '=') |
| 1908 | break; |
| 1909 | } |
| 1910 | |
| 1911 | if (environ == PL_origenviron) { /* need we copy environment? */ |
| 1912 | I32 j; |
| 1913 | I32 max; |
| 1914 | char **tmpenv; |
| 1915 | |
| 1916 | max = i; |
| 1917 | while (environ[max]) |
| 1918 | max++; |
| 1919 | tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*)); |
| 1920 | for (j=0; j<max; j++) { /* copy environment */ |
| 1921 | const int len = strlen(environ[j]); |
| 1922 | tmpenv[j] = (char*)safesysmalloc((len+1)*sizeof(char)); |
| 1923 | Copy(environ[j], tmpenv[j], len+1, char); |
| 1924 | } |
| 1925 | tmpenv[max] = NULL; |
| 1926 | environ = tmpenv; /* tell exec where it is now */ |
| 1927 | } |
| 1928 | if (!val) { |
| 1929 | safesysfree(environ[i]); |
| 1930 | while (environ[i]) { |
| 1931 | environ[i] = environ[i+1]; |
| 1932 | i++; |
| 1933 | } |
| 1934 | return; |
| 1935 | } |
| 1936 | if (!environ[i]) { /* does not exist yet */ |
| 1937 | environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*)); |
| 1938 | environ[i+1] = NULL; /* make sure it's null terminated */ |
| 1939 | } |
| 1940 | else |
| 1941 | safesysfree(environ[i]); |
| 1942 | nlen = strlen(nam); |
| 1943 | vlen = strlen(val); |
| 1944 | |
| 1945 | environ[i] = (char*)safesysmalloc((nlen+vlen+2) * sizeof(char)); |
| 1946 | /* all that work just for this */ |
| 1947 | my_setenv_format(environ[i], nam, nlen, val, vlen); |
| 1948 | } else { |
| 1949 | # endif |
| 1950 | # if defined(__CYGWIN__)|| defined(__SYMBIAN32__) || defined(__riscos__) |
| 1951 | # if defined(HAS_UNSETENV) |
| 1952 | if (val == NULL) { |
| 1953 | (void)unsetenv(nam); |
| 1954 | } else { |
| 1955 | (void)setenv(nam, val, 1); |
| 1956 | } |
| 1957 | # else /* ! HAS_UNSETENV */ |
| 1958 | (void)setenv(nam, val, 1); |
| 1959 | # endif /* HAS_UNSETENV */ |
| 1960 | # else |
| 1961 | # if defined(HAS_UNSETENV) |
| 1962 | if (val == NULL) { |
| 1963 | (void)unsetenv(nam); |
| 1964 | } else { |
| 1965 | const int nlen = strlen(nam); |
| 1966 | const int vlen = strlen(val); |
| 1967 | char * const new_env = |
| 1968 | (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); |
| 1969 | my_setenv_format(new_env, nam, nlen, val, vlen); |
| 1970 | (void)putenv(new_env); |
| 1971 | } |
| 1972 | # else /* ! HAS_UNSETENV */ |
| 1973 | char *new_env; |
| 1974 | const int nlen = strlen(nam); |
| 1975 | int vlen; |
| 1976 | if (!val) { |
| 1977 | val = ""; |
| 1978 | } |
| 1979 | vlen = strlen(val); |
| 1980 | new_env = (char*)safesysmalloc((nlen + vlen + 2) * sizeof(char)); |
| 1981 | /* all that work just for this */ |
| 1982 | my_setenv_format(new_env, nam, nlen, val, vlen); |
| 1983 | (void)putenv(new_env); |
| 1984 | # endif /* HAS_UNSETENV */ |
| 1985 | # endif /* __CYGWIN__ */ |
| 1986 | #ifndef PERL_USE_SAFE_PUTENV |
| 1987 | } |
| 1988 | #endif |
| 1989 | } |
| 1990 | } |
| 1991 | |
| 1992 | #else /* WIN32 || NETWARE */ |
| 1993 | |
| 1994 | void |
| 1995 | Perl_my_setenv(pTHX_ const char *nam, const char *val) |
| 1996 | { |
| 1997 | dVAR; |
| 1998 | char *envstr; |
| 1999 | const int nlen = strlen(nam); |
| 2000 | int vlen; |
| 2001 | |
| 2002 | if (!val) { |
| 2003 | val = ""; |
| 2004 | } |
| 2005 | vlen = strlen(val); |
| 2006 | Newx(envstr, nlen+vlen+2, char); |
| 2007 | my_setenv_format(envstr, nam, nlen, val, vlen); |
| 2008 | (void)PerlEnv_putenv(envstr); |
| 2009 | Safefree(envstr); |
| 2010 | } |
| 2011 | |
| 2012 | #endif /* WIN32 || NETWARE */ |
| 2013 | |
| 2014 | #endif /* !VMS */ |
| 2015 | |
| 2016 | #ifdef UNLINK_ALL_VERSIONS |
| 2017 | I32 |
| 2018 | Perl_unlnk(pTHX_ const char *f) /* unlink all versions of a file */ |
| 2019 | { |
| 2020 | I32 retries = 0; |
| 2021 | |
| 2022 | PERL_ARGS_ASSERT_UNLNK; |
| 2023 | |
| 2024 | while (PerlLIO_unlink(f) >= 0) |
| 2025 | retries++; |
| 2026 | return retries ? 0 : -1; |
| 2027 | } |
| 2028 | #endif |
| 2029 | |
| 2030 | /* this is a drop-in replacement for bcopy() */ |
| 2031 | #if (!defined(HAS_MEMCPY) && !defined(HAS_BCOPY)) || (!defined(HAS_MEMMOVE) && !defined(HAS_SAFE_MEMCPY) && !defined(HAS_SAFE_BCOPY)) |
| 2032 | char * |
| 2033 | Perl_my_bcopy(register const char *from,register char *to,register I32 len) |
| 2034 | { |
| 2035 | char * const retval = to; |
| 2036 | |
| 2037 | PERL_ARGS_ASSERT_MY_BCOPY; |
| 2038 | |
| 2039 | assert(len >= 0); |
| 2040 | |
| 2041 | if (from - to >= 0) { |
| 2042 | while (len--) |
| 2043 | *to++ = *from++; |
| 2044 | } |
| 2045 | else { |
| 2046 | to += len; |
| 2047 | from += len; |
| 2048 | while (len--) |
| 2049 | *(--to) = *(--from); |
| 2050 | } |
| 2051 | return retval; |
| 2052 | } |
| 2053 | #endif |
| 2054 | |
| 2055 | /* this is a drop-in replacement for memset() */ |
| 2056 | #ifndef HAS_MEMSET |
| 2057 | void * |
| 2058 | Perl_my_memset(register char *loc, register I32 ch, register I32 len) |
| 2059 | { |
| 2060 | char * const retval = loc; |
| 2061 | |
| 2062 | PERL_ARGS_ASSERT_MY_MEMSET; |
| 2063 | |
| 2064 | assert(len >= 0); |
| 2065 | |
| 2066 | while (len--) |
| 2067 | *loc++ = ch; |
| 2068 | return retval; |
| 2069 | } |
| 2070 | #endif |
| 2071 | |
| 2072 | /* this is a drop-in replacement for bzero() */ |
| 2073 | #if !defined(HAS_BZERO) && !defined(HAS_MEMSET) |
| 2074 | char * |
| 2075 | Perl_my_bzero(register char *loc, register I32 len) |
| 2076 | { |
| 2077 | char * const retval = loc; |
| 2078 | |
| 2079 | PERL_ARGS_ASSERT_MY_BZERO; |
| 2080 | |
| 2081 | assert(len >= 0); |
| 2082 | |
| 2083 | while (len--) |
| 2084 | *loc++ = 0; |
| 2085 | return retval; |
| 2086 | } |
| 2087 | #endif |
| 2088 | |
| 2089 | /* this is a drop-in replacement for memcmp() */ |
| 2090 | #if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP) |
| 2091 | I32 |
| 2092 | Perl_my_memcmp(const char *s1, const char *s2, register I32 len) |
| 2093 | { |
| 2094 | const U8 *a = (const U8 *)s1; |
| 2095 | const U8 *b = (const U8 *)s2; |
| 2096 | I32 tmp; |
| 2097 | |
| 2098 | PERL_ARGS_ASSERT_MY_MEMCMP; |
| 2099 | |
| 2100 | assert(len >= 0); |
| 2101 | |
| 2102 | while (len--) { |
| 2103 | if ((tmp = *a++ - *b++)) |
| 2104 | return tmp; |
| 2105 | } |
| 2106 | return 0; |
| 2107 | } |
| 2108 | #endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */ |
| 2109 | |
| 2110 | #ifndef HAS_VPRINTF |
| 2111 | /* This vsprintf replacement should generally never get used, since |
| 2112 | vsprintf was available in both System V and BSD 2.11. (There may |
| 2113 | be some cross-compilation or embedded set-ups where it is needed, |
| 2114 | however.) |
| 2115 | |
| 2116 | If you encounter a problem in this function, it's probably a symptom |
| 2117 | that Configure failed to detect your system's vprintf() function. |
| 2118 | See the section on "item vsprintf" in the INSTALL file. |
| 2119 | |
| 2120 | This version may compile on systems with BSD-ish <stdio.h>, |
| 2121 | but probably won't on others. |
| 2122 | */ |
| 2123 | |
| 2124 | #ifdef USE_CHAR_VSPRINTF |
| 2125 | char * |
| 2126 | #else |
| 2127 | int |
| 2128 | #endif |
| 2129 | vsprintf(char *dest, const char *pat, void *args) |
| 2130 | { |
| 2131 | FILE fakebuf; |
| 2132 | |
| 2133 | #if defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) |
| 2134 | FILE_ptr(&fakebuf) = (STDCHAR *) dest; |
| 2135 | FILE_cnt(&fakebuf) = 32767; |
| 2136 | #else |
| 2137 | /* These probably won't compile -- If you really need |
| 2138 | this, you'll have to figure out some other method. */ |
| 2139 | fakebuf._ptr = dest; |
| 2140 | fakebuf._cnt = 32767; |
| 2141 | #endif |
| 2142 | #ifndef _IOSTRG |
| 2143 | #define _IOSTRG 0 |
| 2144 | #endif |
| 2145 | fakebuf._flag = _IOWRT|_IOSTRG; |
| 2146 | _doprnt(pat, args, &fakebuf); /* what a kludge */ |
| 2147 | #if defined(STDIO_PTR_LVALUE) |
| 2148 | *(FILE_ptr(&fakebuf)++) = '\0'; |
| 2149 | #else |
| 2150 | /* PerlIO has probably #defined away fputc, but we want it here. */ |
| 2151 | # ifdef fputc |
| 2152 | # undef fputc /* XXX Should really restore it later */ |
| 2153 | # endif |
| 2154 | (void)fputc('\0', &fakebuf); |
| 2155 | #endif |
| 2156 | #ifdef USE_CHAR_VSPRINTF |
| 2157 | return(dest); |
| 2158 | #else |
| 2159 | return 0; /* perl doesn't use return value */ |
| 2160 | #endif |
| 2161 | } |
| 2162 | |
| 2163 | #endif /* HAS_VPRINTF */ |
| 2164 | |
| 2165 | #ifdef MYSWAP |
| 2166 | #if BYTEORDER != 0x4321 |
| 2167 | short |
| 2168 | Perl_my_swap(pTHX_ short s) |
| 2169 | { |
| 2170 | #if (BYTEORDER & 1) == 0 |
| 2171 | short result; |
| 2172 | |
| 2173 | result = ((s & 255) << 8) + ((s >> 8) & 255); |
| 2174 | return result; |
| 2175 | #else |
| 2176 | return s; |
| 2177 | #endif |
| 2178 | } |
| 2179 | |
| 2180 | long |
| 2181 | Perl_my_htonl(pTHX_ long l) |
| 2182 | { |
| 2183 | union { |
| 2184 | long result; |
| 2185 | char c[sizeof(long)]; |
| 2186 | } u; |
| 2187 | |
| 2188 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
| 2189 | #if BYTEORDER == 0x12345678 |
| 2190 | u.result = 0; |
| 2191 | #endif |
| 2192 | u.c[0] = (l >> 24) & 255; |
| 2193 | u.c[1] = (l >> 16) & 255; |
| 2194 | u.c[2] = (l >> 8) & 255; |
| 2195 | u.c[3] = l & 255; |
| 2196 | return u.result; |
| 2197 | #else |
| 2198 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
| 2199 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
| 2200 | #else |
| 2201 | I32 o; |
| 2202 | I32 s; |
| 2203 | |
| 2204 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
| 2205 | u.c[o & 0xf] = (l >> s) & 255; |
| 2206 | } |
| 2207 | return u.result; |
| 2208 | #endif |
| 2209 | #endif |
| 2210 | } |
| 2211 | |
| 2212 | long |
| 2213 | Perl_my_ntohl(pTHX_ long l) |
| 2214 | { |
| 2215 | union { |
| 2216 | long l; |
| 2217 | char c[sizeof(long)]; |
| 2218 | } u; |
| 2219 | |
| 2220 | #if BYTEORDER == 0x1234 |
| 2221 | u.c[0] = (l >> 24) & 255; |
| 2222 | u.c[1] = (l >> 16) & 255; |
| 2223 | u.c[2] = (l >> 8) & 255; |
| 2224 | u.c[3] = l & 255; |
| 2225 | return u.l; |
| 2226 | #else |
| 2227 | #if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf) |
| 2228 | Perl_croak(aTHX_ "Unknown BYTEORDER\n"); |
| 2229 | #else |
| 2230 | I32 o; |
| 2231 | I32 s; |
| 2232 | |
| 2233 | u.l = l; |
| 2234 | l = 0; |
| 2235 | for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) { |
| 2236 | l |= (u.c[o & 0xf] & 255) << s; |
| 2237 | } |
| 2238 | return l; |
| 2239 | #endif |
| 2240 | #endif |
| 2241 | } |
| 2242 | |
| 2243 | #endif /* BYTEORDER != 0x4321 */ |
| 2244 | #endif /* MYSWAP */ |
| 2245 | |
| 2246 | /* |
| 2247 | * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'. |
| 2248 | * If these functions are defined, |
| 2249 | * the BYTEORDER is neither 0x1234 nor 0x4321. |
| 2250 | * However, this is not assumed. |
| 2251 | * -DWS |
| 2252 | */ |
| 2253 | |
| 2254 | #define HTOLE(name,type) \ |
| 2255 | type \ |
| 2256 | name (register type n) \ |
| 2257 | { \ |
| 2258 | union { \ |
| 2259 | type value; \ |
| 2260 | char c[sizeof(type)]; \ |
| 2261 | } u; \ |
| 2262 | U32 i; \ |
| 2263 | U32 s = 0; \ |
| 2264 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
| 2265 | u.c[i] = (n >> s) & 0xFF; \ |
| 2266 | } \ |
| 2267 | return u.value; \ |
| 2268 | } |
| 2269 | |
| 2270 | #define LETOH(name,type) \ |
| 2271 | type \ |
| 2272 | name (register type n) \ |
| 2273 | { \ |
| 2274 | union { \ |
| 2275 | type value; \ |
| 2276 | char c[sizeof(type)]; \ |
| 2277 | } u; \ |
| 2278 | U32 i; \ |
| 2279 | U32 s = 0; \ |
| 2280 | u.value = n; \ |
| 2281 | n = 0; \ |
| 2282 | for (i = 0; i < sizeof(u.c); i++, s += 8) { \ |
| 2283 | n |= ((type)(u.c[i] & 0xFF)) << s; \ |
| 2284 | } \ |
| 2285 | return n; \ |
| 2286 | } |
| 2287 | |
| 2288 | /* |
| 2289 | * Big-endian byte order functions. |
| 2290 | */ |
| 2291 | |
| 2292 | #define HTOBE(name,type) \ |
| 2293 | type \ |
| 2294 | name (register type n) \ |
| 2295 | { \ |
| 2296 | union { \ |
| 2297 | type value; \ |
| 2298 | char c[sizeof(type)]; \ |
| 2299 | } u; \ |
| 2300 | U32 i; \ |
| 2301 | U32 s = 8*(sizeof(u.c)-1); \ |
| 2302 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ |
| 2303 | u.c[i] = (n >> s) & 0xFF; \ |
| 2304 | } \ |
| 2305 | return u.value; \ |
| 2306 | } |
| 2307 | |
| 2308 | #define BETOH(name,type) \ |
| 2309 | type \ |
| 2310 | name (register type n) \ |
| 2311 | { \ |
| 2312 | union { \ |
| 2313 | type value; \ |
| 2314 | char c[sizeof(type)]; \ |
| 2315 | } u; \ |
| 2316 | U32 i; \ |
| 2317 | U32 s = 8*(sizeof(u.c)-1); \ |
| 2318 | u.value = n; \ |
| 2319 | n = 0; \ |
| 2320 | for (i = 0; i < sizeof(u.c); i++, s -= 8) { \ |
| 2321 | n |= ((type)(u.c[i] & 0xFF)) << s; \ |
| 2322 | } \ |
| 2323 | return n; \ |
| 2324 | } |
| 2325 | |
| 2326 | /* |
| 2327 | * If we just can't do it... |
| 2328 | */ |
| 2329 | |
| 2330 | #define NOT_AVAIL(name,type) \ |
| 2331 | type \ |
| 2332 | name (register type n) \ |
| 2333 | { \ |
| 2334 | Perl_croak_nocontext(#name "() not available"); \ |
| 2335 | return n; /* not reached */ \ |
| 2336 | } |
| 2337 | |
| 2338 | |
| 2339 | #if defined(HAS_HTOVS) && !defined(htovs) |
| 2340 | HTOLE(htovs,short) |
| 2341 | #endif |
| 2342 | #if defined(HAS_HTOVL) && !defined(htovl) |
| 2343 | HTOLE(htovl,long) |
| 2344 | #endif |
| 2345 | #if defined(HAS_VTOHS) && !defined(vtohs) |
| 2346 | LETOH(vtohs,short) |
| 2347 | #endif |
| 2348 | #if defined(HAS_VTOHL) && !defined(vtohl) |
| 2349 | LETOH(vtohl,long) |
| 2350 | #endif |
| 2351 | |
| 2352 | #ifdef PERL_NEED_MY_HTOLE16 |
| 2353 | # if U16SIZE == 2 |
| 2354 | HTOLE(Perl_my_htole16,U16) |
| 2355 | # else |
| 2356 | NOT_AVAIL(Perl_my_htole16,U16) |
| 2357 | # endif |
| 2358 | #endif |
| 2359 | #ifdef PERL_NEED_MY_LETOH16 |
| 2360 | # if U16SIZE == 2 |
| 2361 | LETOH(Perl_my_letoh16,U16) |
| 2362 | # else |
| 2363 | NOT_AVAIL(Perl_my_letoh16,U16) |
| 2364 | # endif |
| 2365 | #endif |
| 2366 | #ifdef PERL_NEED_MY_HTOBE16 |
| 2367 | # if U16SIZE == 2 |
| 2368 | HTOBE(Perl_my_htobe16,U16) |
| 2369 | # else |
| 2370 | NOT_AVAIL(Perl_my_htobe16,U16) |
| 2371 | # endif |
| 2372 | #endif |
| 2373 | #ifdef PERL_NEED_MY_BETOH16 |
| 2374 | # if U16SIZE == 2 |
| 2375 | BETOH(Perl_my_betoh16,U16) |
| 2376 | # else |
| 2377 | NOT_AVAIL(Perl_my_betoh16,U16) |
| 2378 | # endif |
| 2379 | #endif |
| 2380 | |
| 2381 | #ifdef PERL_NEED_MY_HTOLE32 |
| 2382 | # if U32SIZE == 4 |
| 2383 | HTOLE(Perl_my_htole32,U32) |
| 2384 | # else |
| 2385 | NOT_AVAIL(Perl_my_htole32,U32) |
| 2386 | # endif |
| 2387 | #endif |
| 2388 | #ifdef PERL_NEED_MY_LETOH32 |
| 2389 | # if U32SIZE == 4 |
| 2390 | LETOH(Perl_my_letoh32,U32) |
| 2391 | # else |
| 2392 | NOT_AVAIL(Perl_my_letoh32,U32) |
| 2393 | # endif |
| 2394 | #endif |
| 2395 | #ifdef PERL_NEED_MY_HTOBE32 |
| 2396 | # if U32SIZE == 4 |
| 2397 | HTOBE(Perl_my_htobe32,U32) |
| 2398 | # else |
| 2399 | NOT_AVAIL(Perl_my_htobe32,U32) |
| 2400 | # endif |
| 2401 | #endif |
| 2402 | #ifdef PERL_NEED_MY_BETOH32 |
| 2403 | # if U32SIZE == 4 |
| 2404 | BETOH(Perl_my_betoh32,U32) |
| 2405 | # else |
| 2406 | NOT_AVAIL(Perl_my_betoh32,U32) |
| 2407 | # endif |
| 2408 | #endif |
| 2409 | |
| 2410 | #ifdef PERL_NEED_MY_HTOLE64 |
| 2411 | # if U64SIZE == 8 |
| 2412 | HTOLE(Perl_my_htole64,U64) |
| 2413 | # else |
| 2414 | NOT_AVAIL(Perl_my_htole64,U64) |
| 2415 | # endif |
| 2416 | #endif |
| 2417 | #ifdef PERL_NEED_MY_LETOH64 |
| 2418 | # if U64SIZE == 8 |
| 2419 | LETOH(Perl_my_letoh64,U64) |
| 2420 | # else |
| 2421 | NOT_AVAIL(Perl_my_letoh64,U64) |
| 2422 | # endif |
| 2423 | #endif |
| 2424 | #ifdef PERL_NEED_MY_HTOBE64 |
| 2425 | # if U64SIZE == 8 |
| 2426 | HTOBE(Perl_my_htobe64,U64) |
| 2427 | # else |
| 2428 | NOT_AVAIL(Perl_my_htobe64,U64) |
| 2429 | # endif |
| 2430 | #endif |
| 2431 | #ifdef PERL_NEED_MY_BETOH64 |
| 2432 | # if U64SIZE == 8 |
| 2433 | BETOH(Perl_my_betoh64,U64) |
| 2434 | # else |
| 2435 | NOT_AVAIL(Perl_my_betoh64,U64) |
| 2436 | # endif |
| 2437 | #endif |
| 2438 | |
| 2439 | #ifdef PERL_NEED_MY_HTOLES |
| 2440 | HTOLE(Perl_my_htoles,short) |
| 2441 | #endif |
| 2442 | #ifdef PERL_NEED_MY_LETOHS |
| 2443 | LETOH(Perl_my_letohs,short) |
| 2444 | #endif |
| 2445 | #ifdef PERL_NEED_MY_HTOBES |
| 2446 | HTOBE(Perl_my_htobes,short) |
| 2447 | #endif |
| 2448 | #ifdef PERL_NEED_MY_BETOHS |
| 2449 | BETOH(Perl_my_betohs,short) |
| 2450 | #endif |
| 2451 | |
| 2452 | #ifdef PERL_NEED_MY_HTOLEI |
| 2453 | HTOLE(Perl_my_htolei,int) |
| 2454 | #endif |
| 2455 | #ifdef PERL_NEED_MY_LETOHI |
| 2456 | LETOH(Perl_my_letohi,int) |
| 2457 | #endif |
| 2458 | #ifdef PERL_NEED_MY_HTOBEI |
| 2459 | HTOBE(Perl_my_htobei,int) |
| 2460 | #endif |
| 2461 | #ifdef PERL_NEED_MY_BETOHI |
| 2462 | BETOH(Perl_my_betohi,int) |
| 2463 | #endif |
| 2464 | |
| 2465 | #ifdef PERL_NEED_MY_HTOLEL |
| 2466 | HTOLE(Perl_my_htolel,long) |
| 2467 | #endif |
| 2468 | #ifdef PERL_NEED_MY_LETOHL |
| 2469 | LETOH(Perl_my_letohl,long) |
| 2470 | #endif |
| 2471 | #ifdef PERL_NEED_MY_HTOBEL |
| 2472 | HTOBE(Perl_my_htobel,long) |
| 2473 | #endif |
| 2474 | #ifdef PERL_NEED_MY_BETOHL |
| 2475 | BETOH(Perl_my_betohl,long) |
| 2476 | #endif |
| 2477 | |
| 2478 | void |
| 2479 | Perl_my_swabn(void *ptr, int n) |
| 2480 | { |
| 2481 | char *s = (char *)ptr; |
| 2482 | char *e = s + (n-1); |
| 2483 | char tc; |
| 2484 | |
| 2485 | PERL_ARGS_ASSERT_MY_SWABN; |
| 2486 | |
| 2487 | for (n /= 2; n > 0; s++, e--, n--) { |
| 2488 | tc = *s; |
| 2489 | *s = *e; |
| 2490 | *e = tc; |
| 2491 | } |
| 2492 | } |
| 2493 | |
| 2494 | PerlIO * |
| 2495 | Perl_my_popen_list(pTHX_ const char *mode, int n, SV **args) |
| 2496 | { |
| 2497 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(OS2) && !defined(VMS) && !defined(NETWARE) && !defined(__LIBCATAMOUNT__) |
| 2498 | dVAR; |
| 2499 | int p[2]; |
| 2500 | I32 This, that; |
| 2501 | Pid_t pid; |
| 2502 | SV *sv; |
| 2503 | I32 did_pipes = 0; |
| 2504 | int pp[2]; |
| 2505 | |
| 2506 | PERL_ARGS_ASSERT_MY_POPEN_LIST; |
| 2507 | |
| 2508 | PERL_FLUSHALL_FOR_CHILD; |
| 2509 | This = (*mode == 'w'); |
| 2510 | that = !This; |
| 2511 | if (TAINTING_get) { |
| 2512 | taint_env(); |
| 2513 | taint_proper("Insecure %s%s", "EXEC"); |
| 2514 | } |
| 2515 | if (PerlProc_pipe(p) < 0) |
| 2516 | return NULL; |
| 2517 | /* Try for another pipe pair for error return */ |
| 2518 | if (PerlProc_pipe(pp) >= 0) |
| 2519 | did_pipes = 1; |
| 2520 | while ((pid = PerlProc_fork()) < 0) { |
| 2521 | if (errno != EAGAIN) { |
| 2522 | PerlLIO_close(p[This]); |
| 2523 | PerlLIO_close(p[that]); |
| 2524 | if (did_pipes) { |
| 2525 | PerlLIO_close(pp[0]); |
| 2526 | PerlLIO_close(pp[1]); |
| 2527 | } |
| 2528 | return NULL; |
| 2529 | } |
| 2530 | Perl_ck_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); |
| 2531 | sleep(5); |
| 2532 | } |
| 2533 | if (pid == 0) { |
| 2534 | /* Child */ |
| 2535 | #undef THIS |
| 2536 | #undef THAT |
| 2537 | #define THIS that |
| 2538 | #define THAT This |
| 2539 | /* Close parent's end of error status pipe (if any) */ |
| 2540 | if (did_pipes) { |
| 2541 | PerlLIO_close(pp[0]); |
| 2542 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2543 | /* Close error pipe automatically if exec works */ |
| 2544 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); |
| 2545 | #endif |
| 2546 | } |
| 2547 | /* Now dup our end of _the_ pipe to right position */ |
| 2548 | if (p[THIS] != (*mode == 'r')) { |
| 2549 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
| 2550 | PerlLIO_close(p[THIS]); |
| 2551 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
| 2552 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ |
| 2553 | } |
| 2554 | else |
| 2555 | PerlLIO_close(p[THAT]); /* close parent's end of _the_ pipe */ |
| 2556 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
| 2557 | /* No automatic close - do it by hand */ |
| 2558 | # ifndef NOFILE |
| 2559 | # define NOFILE 20 |
| 2560 | # endif |
| 2561 | { |
| 2562 | int fd; |
| 2563 | |
| 2564 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) { |
| 2565 | if (fd != pp[1]) |
| 2566 | PerlLIO_close(fd); |
| 2567 | } |
| 2568 | } |
| 2569 | #endif |
| 2570 | do_aexec5(NULL, args-1, args-1+n, pp[1], did_pipes); |
| 2571 | PerlProc__exit(1); |
| 2572 | #undef THIS |
| 2573 | #undef THAT |
| 2574 | } |
| 2575 | /* Parent */ |
| 2576 | do_execfree(); /* free any memory malloced by child on fork */ |
| 2577 | if (did_pipes) |
| 2578 | PerlLIO_close(pp[1]); |
| 2579 | /* Keep the lower of the two fd numbers */ |
| 2580 | if (p[that] < p[This]) { |
| 2581 | PerlLIO_dup2(p[This], p[that]); |
| 2582 | PerlLIO_close(p[This]); |
| 2583 | p[This] = p[that]; |
| 2584 | } |
| 2585 | else |
| 2586 | PerlLIO_close(p[that]); /* close child's end of pipe */ |
| 2587 | |
| 2588 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
| 2589 | SvUPGRADE(sv,SVt_IV); |
| 2590 | SvIV_set(sv, pid); |
| 2591 | PL_forkprocess = pid; |
| 2592 | /* If we managed to get status pipe check for exec fail */ |
| 2593 | if (did_pipes && pid > 0) { |
| 2594 | int errkid; |
| 2595 | unsigned n = 0; |
| 2596 | SSize_t n1; |
| 2597 | |
| 2598 | while (n < sizeof(int)) { |
| 2599 | n1 = PerlLIO_read(pp[0], |
| 2600 | (void*)(((char*)&errkid)+n), |
| 2601 | (sizeof(int)) - n); |
| 2602 | if (n1 <= 0) |
| 2603 | break; |
| 2604 | n += n1; |
| 2605 | } |
| 2606 | PerlLIO_close(pp[0]); |
| 2607 | did_pipes = 0; |
| 2608 | if (n) { /* Error */ |
| 2609 | int pid2, status; |
| 2610 | PerlLIO_close(p[This]); |
| 2611 | if (n != sizeof(int)) |
| 2612 | Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", n); |
| 2613 | do { |
| 2614 | pid2 = wait4pid(pid, &status, 0); |
| 2615 | } while (pid2 == -1 && errno == EINTR); |
| 2616 | errno = errkid; /* Propagate errno from kid */ |
| 2617 | return NULL; |
| 2618 | } |
| 2619 | } |
| 2620 | if (did_pipes) |
| 2621 | PerlLIO_close(pp[0]); |
| 2622 | return PerlIO_fdopen(p[This], mode); |
| 2623 | #else |
| 2624 | # ifdef OS2 /* Same, without fork()ing and all extra overhead... */ |
| 2625 | return my_syspopen4(aTHX_ NULL, mode, n, args); |
| 2626 | # else |
| 2627 | Perl_croak(aTHX_ "List form of piped open not implemented"); |
| 2628 | return (PerlIO *) NULL; |
| 2629 | # endif |
| 2630 | #endif |
| 2631 | } |
| 2632 | |
| 2633 | /* VMS' my_popen() is in VMS.c, same with OS/2. */ |
| 2634 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__LIBCATAMOUNT__) |
| 2635 | PerlIO * |
| 2636 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
| 2637 | { |
| 2638 | dVAR; |
| 2639 | int p[2]; |
| 2640 | I32 This, that; |
| 2641 | Pid_t pid; |
| 2642 | SV *sv; |
| 2643 | const I32 doexec = !(*cmd == '-' && cmd[1] == '\0'); |
| 2644 | I32 did_pipes = 0; |
| 2645 | int pp[2]; |
| 2646 | |
| 2647 | PERL_ARGS_ASSERT_MY_POPEN; |
| 2648 | |
| 2649 | PERL_FLUSHALL_FOR_CHILD; |
| 2650 | #ifdef OS2 |
| 2651 | if (doexec) { |
| 2652 | return my_syspopen(aTHX_ cmd,mode); |
| 2653 | } |
| 2654 | #endif |
| 2655 | This = (*mode == 'w'); |
| 2656 | that = !This; |
| 2657 | if (doexec && TAINTING_get) { |
| 2658 | taint_env(); |
| 2659 | taint_proper("Insecure %s%s", "EXEC"); |
| 2660 | } |
| 2661 | if (PerlProc_pipe(p) < 0) |
| 2662 | return NULL; |
| 2663 | if (doexec && PerlProc_pipe(pp) >= 0) |
| 2664 | did_pipes = 1; |
| 2665 | while ((pid = PerlProc_fork()) < 0) { |
| 2666 | if (errno != EAGAIN) { |
| 2667 | PerlLIO_close(p[This]); |
| 2668 | PerlLIO_close(p[that]); |
| 2669 | if (did_pipes) { |
| 2670 | PerlLIO_close(pp[0]); |
| 2671 | PerlLIO_close(pp[1]); |
| 2672 | } |
| 2673 | if (!doexec) |
| 2674 | Perl_croak(aTHX_ "Can't fork: %s", Strerror(errno)); |
| 2675 | return NULL; |
| 2676 | } |
| 2677 | Perl_ck_warner(aTHX_ packWARN(WARN_PIPE), "Can't fork, trying again in 5 seconds"); |
| 2678 | sleep(5); |
| 2679 | } |
| 2680 | if (pid == 0) { |
| 2681 | |
| 2682 | #undef THIS |
| 2683 | #undef THAT |
| 2684 | #define THIS that |
| 2685 | #define THAT This |
| 2686 | if (did_pipes) { |
| 2687 | PerlLIO_close(pp[0]); |
| 2688 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 2689 | fcntl(pp[1], F_SETFD, FD_CLOEXEC); |
| 2690 | #endif |
| 2691 | } |
| 2692 | if (p[THIS] != (*mode == 'r')) { |
| 2693 | PerlLIO_dup2(p[THIS], *mode == 'r'); |
| 2694 | PerlLIO_close(p[THIS]); |
| 2695 | if (p[THAT] != (*mode == 'r')) /* if dup2() didn't close it */ |
| 2696 | PerlLIO_close(p[THAT]); |
| 2697 | } |
| 2698 | else |
| 2699 | PerlLIO_close(p[THAT]); |
| 2700 | #ifndef OS2 |
| 2701 | if (doexec) { |
| 2702 | #if !defined(HAS_FCNTL) || !defined(F_SETFD) |
| 2703 | #ifndef NOFILE |
| 2704 | #define NOFILE 20 |
| 2705 | #endif |
| 2706 | { |
| 2707 | int fd; |
| 2708 | |
| 2709 | for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++) |
| 2710 | if (fd != pp[1]) |
| 2711 | PerlLIO_close(fd); |
| 2712 | } |
| 2713 | #endif |
| 2714 | /* may or may not use the shell */ |
| 2715 | do_exec3(cmd, pp[1], did_pipes); |
| 2716 | PerlProc__exit(1); |
| 2717 | } |
| 2718 | #endif /* defined OS2 */ |
| 2719 | |
| 2720 | #ifdef PERLIO_USING_CRLF |
| 2721 | /* Since we circumvent IO layers when we manipulate low-level |
| 2722 | filedescriptors directly, need to manually switch to the |
| 2723 | default, binary, low-level mode; see PerlIOBuf_open(). */ |
| 2724 | PerlLIO_setmode((*mode == 'r'), O_BINARY); |
| 2725 | #endif |
| 2726 | PL_forkprocess = 0; |
| 2727 | #ifdef PERL_USES_PL_PIDSTATUS |
| 2728 | hv_clear(PL_pidstatus); /* we have no children */ |
| 2729 | #endif |
| 2730 | return NULL; |
| 2731 | #undef THIS |
| 2732 | #undef THAT |
| 2733 | } |
| 2734 | do_execfree(); /* free any memory malloced by child on vfork */ |
| 2735 | if (did_pipes) |
| 2736 | PerlLIO_close(pp[1]); |
| 2737 | if (p[that] < p[This]) { |
| 2738 | PerlLIO_dup2(p[This], p[that]); |
| 2739 | PerlLIO_close(p[This]); |
| 2740 | p[This] = p[that]; |
| 2741 | } |
| 2742 | else |
| 2743 | PerlLIO_close(p[that]); |
| 2744 | |
| 2745 | sv = *av_fetch(PL_fdpid,p[This],TRUE); |
| 2746 | SvUPGRADE(sv,SVt_IV); |
| 2747 | SvIV_set(sv, pid); |
| 2748 | PL_forkprocess = pid; |
| 2749 | if (did_pipes && pid > 0) { |
| 2750 | int errkid; |
| 2751 | unsigned n = 0; |
| 2752 | SSize_t n1; |
| 2753 | |
| 2754 | while (n < sizeof(int)) { |
| 2755 | n1 = PerlLIO_read(pp[0], |
| 2756 | (void*)(((char*)&errkid)+n), |
| 2757 | (sizeof(int)) - n); |
| 2758 | if (n1 <= 0) |
| 2759 | break; |
| 2760 | n += n1; |
| 2761 | } |
| 2762 | PerlLIO_close(pp[0]); |
| 2763 | did_pipes = 0; |
| 2764 | if (n) { /* Error */ |
| 2765 | int pid2, status; |
| 2766 | PerlLIO_close(p[This]); |
| 2767 | if (n != sizeof(int)) |
| 2768 | Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", n); |
| 2769 | do { |
| 2770 | pid2 = wait4pid(pid, &status, 0); |
| 2771 | } while (pid2 == -1 && errno == EINTR); |
| 2772 | errno = errkid; /* Propagate errno from kid */ |
| 2773 | return NULL; |
| 2774 | } |
| 2775 | } |
| 2776 | if (did_pipes) |
| 2777 | PerlLIO_close(pp[0]); |
| 2778 | return PerlIO_fdopen(p[This], mode); |
| 2779 | } |
| 2780 | #else |
| 2781 | #if defined(DJGPP) |
| 2782 | FILE *djgpp_popen(); |
| 2783 | PerlIO * |
| 2784 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
| 2785 | { |
| 2786 | PERL_FLUSHALL_FOR_CHILD; |
| 2787 | /* Call system's popen() to get a FILE *, then import it. |
| 2788 | used 0 for 2nd parameter to PerlIO_importFILE; |
| 2789 | apparently not used |
| 2790 | */ |
| 2791 | return PerlIO_importFILE(djgpp_popen(cmd, mode), 0); |
| 2792 | } |
| 2793 | #else |
| 2794 | #if defined(__LIBCATAMOUNT__) |
| 2795 | PerlIO * |
| 2796 | Perl_my_popen(pTHX_ const char *cmd, const char *mode) |
| 2797 | { |
| 2798 | return NULL; |
| 2799 | } |
| 2800 | #endif |
| 2801 | #endif |
| 2802 | |
| 2803 | #endif /* !DOSISH */ |
| 2804 | |
| 2805 | /* this is called in parent before the fork() */ |
| 2806 | void |
| 2807 | Perl_atfork_lock(void) |
| 2808 | { |
| 2809 | dVAR; |
| 2810 | #if defined(USE_ITHREADS) |
| 2811 | /* locks must be held in locking order (if any) */ |
| 2812 | # ifdef MYMALLOC |
| 2813 | MUTEX_LOCK(&PL_malloc_mutex); |
| 2814 | # endif |
| 2815 | OP_REFCNT_LOCK; |
| 2816 | #endif |
| 2817 | } |
| 2818 | |
| 2819 | /* this is called in both parent and child after the fork() */ |
| 2820 | void |
| 2821 | Perl_atfork_unlock(void) |
| 2822 | { |
| 2823 | dVAR; |
| 2824 | #if defined(USE_ITHREADS) |
| 2825 | /* locks must be released in same order as in atfork_lock() */ |
| 2826 | # ifdef MYMALLOC |
| 2827 | MUTEX_UNLOCK(&PL_malloc_mutex); |
| 2828 | # endif |
| 2829 | OP_REFCNT_UNLOCK; |
| 2830 | #endif |
| 2831 | } |
| 2832 | |
| 2833 | Pid_t |
| 2834 | Perl_my_fork(void) |
| 2835 | { |
| 2836 | #if defined(HAS_FORK) |
| 2837 | Pid_t pid; |
| 2838 | #if defined(USE_ITHREADS) && !defined(HAS_PTHREAD_ATFORK) |
| 2839 | atfork_lock(); |
| 2840 | pid = fork(); |
| 2841 | atfork_unlock(); |
| 2842 | #else |
| 2843 | /* atfork_lock() and atfork_unlock() are installed as pthread_atfork() |
| 2844 | * handlers elsewhere in the code */ |
| 2845 | pid = fork(); |
| 2846 | #endif |
| 2847 | return pid; |
| 2848 | #else |
| 2849 | /* this "canna happen" since nothing should be calling here if !HAS_FORK */ |
| 2850 | Perl_croak_nocontext("fork() not available"); |
| 2851 | return 0; |
| 2852 | #endif /* HAS_FORK */ |
| 2853 | } |
| 2854 | |
| 2855 | #ifdef DUMP_FDS |
| 2856 | void |
| 2857 | Perl_dump_fds(pTHX_ const char *const s) |
| 2858 | { |
| 2859 | int fd; |
| 2860 | Stat_t tmpstatbuf; |
| 2861 | |
| 2862 | PERL_ARGS_ASSERT_DUMP_FDS; |
| 2863 | |
| 2864 | PerlIO_printf(Perl_debug_log,"%s", s); |
| 2865 | for (fd = 0; fd < 32; fd++) { |
| 2866 | if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0) |
| 2867 | PerlIO_printf(Perl_debug_log," %d",fd); |
| 2868 | } |
| 2869 | PerlIO_printf(Perl_debug_log,"\n"); |
| 2870 | return; |
| 2871 | } |
| 2872 | #endif /* DUMP_FDS */ |
| 2873 | |
| 2874 | #ifndef HAS_DUP2 |
| 2875 | int |
| 2876 | dup2(int oldfd, int newfd) |
| 2877 | { |
| 2878 | #if defined(HAS_FCNTL) && defined(F_DUPFD) |
| 2879 | if (oldfd == newfd) |
| 2880 | return oldfd; |
| 2881 | PerlLIO_close(newfd); |
| 2882 | return fcntl(oldfd, F_DUPFD, newfd); |
| 2883 | #else |
| 2884 | #define DUP2_MAX_FDS 256 |
| 2885 | int fdtmp[DUP2_MAX_FDS]; |
| 2886 | I32 fdx = 0; |
| 2887 | int fd; |
| 2888 | |
| 2889 | if (oldfd == newfd) |
| 2890 | return oldfd; |
| 2891 | PerlLIO_close(newfd); |
| 2892 | /* good enough for low fd's... */ |
| 2893 | while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) { |
| 2894 | if (fdx >= DUP2_MAX_FDS) { |
| 2895 | PerlLIO_close(fd); |
| 2896 | fd = -1; |
| 2897 | break; |
| 2898 | } |
| 2899 | fdtmp[fdx++] = fd; |
| 2900 | } |
| 2901 | while (fdx > 0) |
| 2902 | PerlLIO_close(fdtmp[--fdx]); |
| 2903 | return fd; |
| 2904 | #endif |
| 2905 | } |
| 2906 | #endif |
| 2907 | |
| 2908 | #ifndef PERL_MICRO |
| 2909 | #ifdef HAS_SIGACTION |
| 2910 | |
| 2911 | Sighandler_t |
| 2912 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
| 2913 | { |
| 2914 | dVAR; |
| 2915 | struct sigaction act, oact; |
| 2916 | |
| 2917 | #ifdef USE_ITHREADS |
| 2918 | /* only "parent" interpreter can diddle signals */ |
| 2919 | if (PL_curinterp != aTHX) |
| 2920 | return (Sighandler_t) SIG_ERR; |
| 2921 | #endif |
| 2922 | |
| 2923 | act.sa_handler = (void(*)(int))handler; |
| 2924 | sigemptyset(&act.sa_mask); |
| 2925 | act.sa_flags = 0; |
| 2926 | #ifdef SA_RESTART |
| 2927 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
| 2928 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
| 2929 | #endif |
| 2930 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
| 2931 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
| 2932 | act.sa_flags |= SA_NOCLDWAIT; |
| 2933 | #endif |
| 2934 | if (sigaction(signo, &act, &oact) == -1) |
| 2935 | return (Sighandler_t) SIG_ERR; |
| 2936 | else |
| 2937 | return (Sighandler_t) oact.sa_handler; |
| 2938 | } |
| 2939 | |
| 2940 | Sighandler_t |
| 2941 | Perl_rsignal_state(pTHX_ int signo) |
| 2942 | { |
| 2943 | struct sigaction oact; |
| 2944 | PERL_UNUSED_CONTEXT; |
| 2945 | |
| 2946 | if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1) |
| 2947 | return (Sighandler_t) SIG_ERR; |
| 2948 | else |
| 2949 | return (Sighandler_t) oact.sa_handler; |
| 2950 | } |
| 2951 | |
| 2952 | int |
| 2953 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
| 2954 | { |
| 2955 | dVAR; |
| 2956 | struct sigaction act; |
| 2957 | |
| 2958 | PERL_ARGS_ASSERT_RSIGNAL_SAVE; |
| 2959 | |
| 2960 | #ifdef USE_ITHREADS |
| 2961 | /* only "parent" interpreter can diddle signals */ |
| 2962 | if (PL_curinterp != aTHX) |
| 2963 | return -1; |
| 2964 | #endif |
| 2965 | |
| 2966 | act.sa_handler = (void(*)(int))handler; |
| 2967 | sigemptyset(&act.sa_mask); |
| 2968 | act.sa_flags = 0; |
| 2969 | #ifdef SA_RESTART |
| 2970 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
| 2971 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
| 2972 | #endif |
| 2973 | #if defined(SA_NOCLDWAIT) && !defined(BSDish) /* See [perl #18849] */ |
| 2974 | if (signo == SIGCHLD && handler == (Sighandler_t) SIG_IGN) |
| 2975 | act.sa_flags |= SA_NOCLDWAIT; |
| 2976 | #endif |
| 2977 | return sigaction(signo, &act, save); |
| 2978 | } |
| 2979 | |
| 2980 | int |
| 2981 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
| 2982 | { |
| 2983 | dVAR; |
| 2984 | #ifdef USE_ITHREADS |
| 2985 | /* only "parent" interpreter can diddle signals */ |
| 2986 | if (PL_curinterp != aTHX) |
| 2987 | return -1; |
| 2988 | #endif |
| 2989 | |
| 2990 | return sigaction(signo, save, (struct sigaction *)NULL); |
| 2991 | } |
| 2992 | |
| 2993 | #else /* !HAS_SIGACTION */ |
| 2994 | |
| 2995 | Sighandler_t |
| 2996 | Perl_rsignal(pTHX_ int signo, Sighandler_t handler) |
| 2997 | { |
| 2998 | #if defined(USE_ITHREADS) && !defined(WIN32) |
| 2999 | /* only "parent" interpreter can diddle signals */ |
| 3000 | if (PL_curinterp != aTHX) |
| 3001 | return (Sighandler_t) SIG_ERR; |
| 3002 | #endif |
| 3003 | |
| 3004 | return PerlProc_signal(signo, handler); |
| 3005 | } |
| 3006 | |
| 3007 | static Signal_t |
| 3008 | sig_trap(int signo) |
| 3009 | { |
| 3010 | dVAR; |
| 3011 | PL_sig_trapped++; |
| 3012 | } |
| 3013 | |
| 3014 | Sighandler_t |
| 3015 | Perl_rsignal_state(pTHX_ int signo) |
| 3016 | { |
| 3017 | dVAR; |
| 3018 | Sighandler_t oldsig; |
| 3019 | |
| 3020 | #if defined(USE_ITHREADS) && !defined(WIN32) |
| 3021 | /* only "parent" interpreter can diddle signals */ |
| 3022 | if (PL_curinterp != aTHX) |
| 3023 | return (Sighandler_t) SIG_ERR; |
| 3024 | #endif |
| 3025 | |
| 3026 | PL_sig_trapped = 0; |
| 3027 | oldsig = PerlProc_signal(signo, sig_trap); |
| 3028 | PerlProc_signal(signo, oldsig); |
| 3029 | if (PL_sig_trapped) |
| 3030 | PerlProc_kill(PerlProc_getpid(), signo); |
| 3031 | return oldsig; |
| 3032 | } |
| 3033 | |
| 3034 | int |
| 3035 | Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save) |
| 3036 | { |
| 3037 | #if defined(USE_ITHREADS) && !defined(WIN32) |
| 3038 | /* only "parent" interpreter can diddle signals */ |
| 3039 | if (PL_curinterp != aTHX) |
| 3040 | return -1; |
| 3041 | #endif |
| 3042 | *save = PerlProc_signal(signo, handler); |
| 3043 | return (*save == (Sighandler_t) SIG_ERR) ? -1 : 0; |
| 3044 | } |
| 3045 | |
| 3046 | int |
| 3047 | Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save) |
| 3048 | { |
| 3049 | #if defined(USE_ITHREADS) && !defined(WIN32) |
| 3050 | /* only "parent" interpreter can diddle signals */ |
| 3051 | if (PL_curinterp != aTHX) |
| 3052 | return -1; |
| 3053 | #endif |
| 3054 | return (PerlProc_signal(signo, *save) == (Sighandler_t) SIG_ERR) ? -1 : 0; |
| 3055 | } |
| 3056 | |
| 3057 | #endif /* !HAS_SIGACTION */ |
| 3058 | #endif /* !PERL_MICRO */ |
| 3059 | |
| 3060 | /* VMS' my_pclose() is in VMS.c; same with OS/2 */ |
| 3061 | #if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__LIBCATAMOUNT__) |
| 3062 | I32 |
| 3063 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 3064 | { |
| 3065 | dVAR; |
| 3066 | Sigsave_t hstat, istat, qstat; |
| 3067 | int status; |
| 3068 | SV **svp; |
| 3069 | Pid_t pid; |
| 3070 | Pid_t pid2 = 0; |
| 3071 | bool close_failed; |
| 3072 | dSAVEDERRNO; |
| 3073 | const int fd = PerlIO_fileno(ptr); |
| 3074 | |
| 3075 | #ifdef USE_PERLIO |
| 3076 | /* Find out whether the refcount is low enough for us to wait for the |
| 3077 | child proc without blocking. */ |
| 3078 | const bool should_wait = PerlIOUnix_refcnt(fd) == 1; |
| 3079 | #else |
| 3080 | const bool should_wait = 1; |
| 3081 | #endif |
| 3082 | |
| 3083 | svp = av_fetch(PL_fdpid,fd,TRUE); |
| 3084 | pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1; |
| 3085 | SvREFCNT_dec(*svp); |
| 3086 | *svp = &PL_sv_undef; |
| 3087 | #ifdef OS2 |
| 3088 | if (pid == -1) { /* Opened by popen. */ |
| 3089 | return my_syspclose(ptr); |
| 3090 | } |
| 3091 | #endif |
| 3092 | close_failed = (PerlIO_close(ptr) == EOF); |
| 3093 | SAVE_ERRNO; |
| 3094 | #ifndef PERL_MICRO |
| 3095 | rsignal_save(SIGHUP, (Sighandler_t) SIG_IGN, &hstat); |
| 3096 | rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &istat); |
| 3097 | rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qstat); |
| 3098 | #endif |
| 3099 | if (should_wait) do { |
| 3100 | pid2 = wait4pid(pid, &status, 0); |
| 3101 | } while (pid2 == -1 && errno == EINTR); |
| 3102 | #ifndef PERL_MICRO |
| 3103 | rsignal_restore(SIGHUP, &hstat); |
| 3104 | rsignal_restore(SIGINT, &istat); |
| 3105 | rsignal_restore(SIGQUIT, &qstat); |
| 3106 | #endif |
| 3107 | if (close_failed) { |
| 3108 | RESTORE_ERRNO; |
| 3109 | return -1; |
| 3110 | } |
| 3111 | return( |
| 3112 | should_wait |
| 3113 | ? pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status) |
| 3114 | : 0 |
| 3115 | ); |
| 3116 | } |
| 3117 | #else |
| 3118 | #if defined(__LIBCATAMOUNT__) |
| 3119 | I32 |
| 3120 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 3121 | { |
| 3122 | return -1; |
| 3123 | } |
| 3124 | #endif |
| 3125 | #endif /* !DOSISH */ |
| 3126 | |
| 3127 | #if (!defined(DOSISH) || defined(OS2) || defined(WIN32) || defined(NETWARE)) && !defined(__LIBCATAMOUNT__) |
| 3128 | I32 |
| 3129 | Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags) |
| 3130 | { |
| 3131 | dVAR; |
| 3132 | I32 result = 0; |
| 3133 | PERL_ARGS_ASSERT_WAIT4PID; |
| 3134 | if (!pid) |
| 3135 | return -1; |
| 3136 | #ifdef PERL_USES_PL_PIDSTATUS |
| 3137 | { |
| 3138 | if (pid > 0) { |
| 3139 | /* The keys in PL_pidstatus are now the raw 4 (or 8) bytes of the |
| 3140 | pid, rather than a string form. */ |
| 3141 | SV * const * const svp = hv_fetch(PL_pidstatus,(const char*) &pid,sizeof(Pid_t),FALSE); |
| 3142 | if (svp && *svp != &PL_sv_undef) { |
| 3143 | *statusp = SvIVX(*svp); |
| 3144 | (void)hv_delete(PL_pidstatus,(const char*) &pid,sizeof(Pid_t), |
| 3145 | G_DISCARD); |
| 3146 | return pid; |
| 3147 | } |
| 3148 | } |
| 3149 | else { |
| 3150 | HE *entry; |
| 3151 | |
| 3152 | hv_iterinit(PL_pidstatus); |
| 3153 | if ((entry = hv_iternext(PL_pidstatus))) { |
| 3154 | SV * const sv = hv_iterval(PL_pidstatus,entry); |
| 3155 | I32 len; |
| 3156 | const char * const spid = hv_iterkey(entry,&len); |
| 3157 | |
| 3158 | assert (len == sizeof(Pid_t)); |
| 3159 | memcpy((char *)&pid, spid, len); |
| 3160 | *statusp = SvIVX(sv); |
| 3161 | /* The hash iterator is currently on this entry, so simply |
| 3162 | calling hv_delete would trigger the lazy delete, which on |
| 3163 | aggregate does more work, beacuse next call to hv_iterinit() |
| 3164 | would spot the flag, and have to call the delete routine, |
| 3165 | while in the meantime any new entries can't re-use that |
| 3166 | memory. */ |
| 3167 | hv_iterinit(PL_pidstatus); |
| 3168 | (void)hv_delete(PL_pidstatus,spid,len,G_DISCARD); |
| 3169 | return pid; |
| 3170 | } |
| 3171 | } |
| 3172 | } |
| 3173 | #endif |
| 3174 | #ifdef HAS_WAITPID |
| 3175 | # ifdef HAS_WAITPID_RUNTIME |
| 3176 | if (!HAS_WAITPID_RUNTIME) |
| 3177 | goto hard_way; |
| 3178 | # endif |
| 3179 | result = PerlProc_waitpid(pid,statusp,flags); |
| 3180 | goto finish; |
| 3181 | #endif |
| 3182 | #if !defined(HAS_WAITPID) && defined(HAS_WAIT4) |
| 3183 | result = wait4((pid==-1)?0:pid,statusp,flags,NULL); |
| 3184 | goto finish; |
| 3185 | #endif |
| 3186 | #ifdef PERL_USES_PL_PIDSTATUS |
| 3187 | #if defined(HAS_WAITPID) && defined(HAS_WAITPID_RUNTIME) |
| 3188 | hard_way: |
| 3189 | #endif |
| 3190 | { |
| 3191 | if (flags) |
| 3192 | Perl_croak(aTHX_ "Can't do waitpid with flags"); |
| 3193 | else { |
| 3194 | while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0) |
| 3195 | pidgone(result,*statusp); |
| 3196 | if (result < 0) |
| 3197 | *statusp = -1; |
| 3198 | } |
| 3199 | } |
| 3200 | #endif |
| 3201 | #if defined(HAS_WAITPID) || defined(HAS_WAIT4) |
| 3202 | finish: |
| 3203 | #endif |
| 3204 | if (result < 0 && errno == EINTR) { |
| 3205 | PERL_ASYNC_CHECK(); |
| 3206 | errno = EINTR; /* reset in case a signal handler changed $! */ |
| 3207 | } |
| 3208 | return result; |
| 3209 | } |
| 3210 | #endif /* !DOSISH || OS2 || WIN32 || NETWARE */ |
| 3211 | |
| 3212 | #ifdef PERL_USES_PL_PIDSTATUS |
| 3213 | void |
| 3214 | S_pidgone(pTHX_ Pid_t pid, int status) |
| 3215 | { |
| 3216 | SV *sv; |
| 3217 | |
| 3218 | sv = *hv_fetch(PL_pidstatus,(const char*)&pid,sizeof(Pid_t),TRUE); |
| 3219 | SvUPGRADE(sv,SVt_IV); |
| 3220 | SvIV_set(sv, status); |
| 3221 | return; |
| 3222 | } |
| 3223 | #endif |
| 3224 | |
| 3225 | #if defined(OS2) |
| 3226 | int pclose(); |
| 3227 | #ifdef HAS_FORK |
| 3228 | int /* Cannot prototype with I32 |
| 3229 | in os2ish.h. */ |
| 3230 | my_syspclose(PerlIO *ptr) |
| 3231 | #else |
| 3232 | I32 |
| 3233 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 3234 | #endif |
| 3235 | { |
| 3236 | /* Needs work for PerlIO ! */ |
| 3237 | FILE * const f = PerlIO_findFILE(ptr); |
| 3238 | const I32 result = pclose(f); |
| 3239 | PerlIO_releaseFILE(ptr,f); |
| 3240 | return result; |
| 3241 | } |
| 3242 | #endif |
| 3243 | |
| 3244 | #if defined(DJGPP) |
| 3245 | int djgpp_pclose(); |
| 3246 | I32 |
| 3247 | Perl_my_pclose(pTHX_ PerlIO *ptr) |
| 3248 | { |
| 3249 | /* Needs work for PerlIO ! */ |
| 3250 | FILE * const f = PerlIO_findFILE(ptr); |
| 3251 | I32 result = djgpp_pclose(f); |
| 3252 | result = (result << 8) & 0xff00; |
| 3253 | PerlIO_releaseFILE(ptr,f); |
| 3254 | return result; |
| 3255 | } |
| 3256 | #endif |
| 3257 | |
| 3258 | #define PERL_REPEATCPY_LINEAR 4 |
| 3259 | void |
| 3260 | Perl_repeatcpy(register char *to, register const char *from, I32 len, register IV count) |
| 3261 | { |
| 3262 | PERL_ARGS_ASSERT_REPEATCPY; |
| 3263 | |
| 3264 | assert(len >= 0); |
| 3265 | |
| 3266 | if (count < 0) |
| 3267 | croak_memory_wrap(); |
| 3268 | |
| 3269 | if (len == 1) |
| 3270 | memset(to, *from, count); |
| 3271 | else if (count) { |
| 3272 | char *p = to; |
| 3273 | IV items, linear, half; |
| 3274 | |
| 3275 | linear = count < PERL_REPEATCPY_LINEAR ? count : PERL_REPEATCPY_LINEAR; |
| 3276 | for (items = 0; items < linear; ++items) { |
| 3277 | const char *q = from; |
| 3278 | IV todo; |
| 3279 | for (todo = len; todo > 0; todo--) |
| 3280 | *p++ = *q++; |
| 3281 | } |
| 3282 | |
| 3283 | half = count / 2; |
| 3284 | while (items <= half) { |
| 3285 | IV size = items * len; |
| 3286 | memcpy(p, to, size); |
| 3287 | p += size; |
| 3288 | items *= 2; |
| 3289 | } |
| 3290 | |
| 3291 | if (count > items) |
| 3292 | memcpy(p, to, (count - items) * len); |
| 3293 | } |
| 3294 | } |
| 3295 | |
| 3296 | #ifndef HAS_RENAME |
| 3297 | I32 |
| 3298 | Perl_same_dirent(pTHX_ const char *a, const char *b) |
| 3299 | { |
| 3300 | char *fa = strrchr(a,'/'); |
| 3301 | char *fb = strrchr(b,'/'); |
| 3302 | Stat_t tmpstatbuf1; |
| 3303 | Stat_t tmpstatbuf2; |
| 3304 | SV * const tmpsv = sv_newmortal(); |
| 3305 | |
| 3306 | PERL_ARGS_ASSERT_SAME_DIRENT; |
| 3307 | |
| 3308 | if (fa) |
| 3309 | fa++; |
| 3310 | else |
| 3311 | fa = a; |
| 3312 | if (fb) |
| 3313 | fb++; |
| 3314 | else |
| 3315 | fb = b; |
| 3316 | if (strNE(a,b)) |
| 3317 | return FALSE; |
| 3318 | if (fa == a) |
| 3319 | sv_setpvs(tmpsv, "."); |
| 3320 | else |
| 3321 | sv_setpvn(tmpsv, a, fa - a); |
| 3322 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf1) < 0) |
| 3323 | return FALSE; |
| 3324 | if (fb == b) |
| 3325 | sv_setpvs(tmpsv, "."); |
| 3326 | else |
| 3327 | sv_setpvn(tmpsv, b, fb - b); |
| 3328 | if (PerlLIO_stat(SvPVX_const(tmpsv), &tmpstatbuf2) < 0) |
| 3329 | return FALSE; |
| 3330 | return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev && |
| 3331 | tmpstatbuf1.st_ino == tmpstatbuf2.st_ino; |
| 3332 | } |
| 3333 | #endif /* !HAS_RENAME */ |
| 3334 | |
| 3335 | char* |
| 3336 | Perl_find_script(pTHX_ const char *scriptname, bool dosearch, |
| 3337 | const char *const *const search_ext, I32 flags) |
| 3338 | { |
| 3339 | dVAR; |
| 3340 | const char *xfound = NULL; |
| 3341 | char *xfailed = NULL; |
| 3342 | char tmpbuf[MAXPATHLEN]; |
| 3343 | char *s; |
| 3344 | I32 len = 0; |
| 3345 | int retval; |
| 3346 | char *bufend; |
| 3347 | #if defined(DOSISH) && !defined(OS2) |
| 3348 | # define SEARCH_EXTS ".bat", ".cmd", NULL |
| 3349 | # define MAX_EXT_LEN 4 |
| 3350 | #endif |
| 3351 | #ifdef OS2 |
| 3352 | # define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL |
| 3353 | # define MAX_EXT_LEN 4 |
| 3354 | #endif |
| 3355 | #ifdef VMS |
| 3356 | # define SEARCH_EXTS ".pl", ".com", NULL |
| 3357 | # define MAX_EXT_LEN 4 |
| 3358 | #endif |
| 3359 | /* additional extensions to try in each dir if scriptname not found */ |
| 3360 | #ifdef SEARCH_EXTS |
| 3361 | static const char *const exts[] = { SEARCH_EXTS }; |
| 3362 | const char *const *const ext = search_ext ? search_ext : exts; |
| 3363 | int extidx = 0, i = 0; |
| 3364 | const char *curext = NULL; |
| 3365 | #else |
| 3366 | PERL_UNUSED_ARG(search_ext); |
| 3367 | # define MAX_EXT_LEN 0 |
| 3368 | #endif |
| 3369 | |
| 3370 | PERL_ARGS_ASSERT_FIND_SCRIPT; |
| 3371 | |
| 3372 | /* |
| 3373 | * If dosearch is true and if scriptname does not contain path |
| 3374 | * delimiters, search the PATH for scriptname. |
| 3375 | * |
| 3376 | * If SEARCH_EXTS is also defined, will look for each |
| 3377 | * scriptname{SEARCH_EXTS} whenever scriptname is not found |
| 3378 | * while searching the PATH. |
| 3379 | * |
| 3380 | * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search |
| 3381 | * proceeds as follows: |
| 3382 | * If DOSISH or VMSISH: |
| 3383 | * + look for ./scriptname{,.foo,.bar} |
| 3384 | * + search the PATH for scriptname{,.foo,.bar} |
| 3385 | * |
| 3386 | * If !DOSISH: |
| 3387 | * + look *only* in the PATH for scriptname{,.foo,.bar} (note |
| 3388 | * this will not look in '.' if it's not in the PATH) |
| 3389 | */ |
| 3390 | tmpbuf[0] = '\0'; |
| 3391 | |
| 3392 | #ifdef VMS |
| 3393 | # ifdef ALWAYS_DEFTYPES |
| 3394 | len = strlen(scriptname); |
| 3395 | if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') { |
| 3396 | int idx = 0, deftypes = 1; |
| 3397 | bool seen_dot = 1; |
| 3398 | |
| 3399 | const int hasdir = !dosearch || (strpbrk(scriptname,":[</") != NULL); |
| 3400 | # else |
| 3401 | if (dosearch) { |
| 3402 | int idx = 0, deftypes = 1; |
| 3403 | bool seen_dot = 1; |
| 3404 | |
| 3405 | const int hasdir = (strpbrk(scriptname,":[</") != NULL); |
| 3406 | # endif |
| 3407 | /* The first time through, just add SEARCH_EXTS to whatever we |
| 3408 | * already have, so we can check for default file types. */ |
| 3409 | while (deftypes || |
| 3410 | (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) ) |
| 3411 | { |
| 3412 | if (deftypes) { |
| 3413 | deftypes = 0; |
| 3414 | *tmpbuf = '\0'; |
| 3415 | } |
| 3416 | if ((strlen(tmpbuf) + strlen(scriptname) |
| 3417 | + MAX_EXT_LEN) >= sizeof tmpbuf) |
| 3418 | continue; /* don't search dir with too-long name */ |
| 3419 | my_strlcat(tmpbuf, scriptname, sizeof(tmpbuf)); |
| 3420 | #else /* !VMS */ |
| 3421 | |
| 3422 | #ifdef DOSISH |
| 3423 | if (strEQ(scriptname, "-")) |
| 3424 | dosearch = 0; |
| 3425 | if (dosearch) { /* Look in '.' first. */ |
| 3426 | const char *cur = scriptname; |
| 3427 | #ifdef SEARCH_EXTS |
| 3428 | if ((curext = strrchr(scriptname,'.'))) /* possible current ext */ |
| 3429 | while (ext[i]) |
| 3430 | if (strEQ(ext[i++],curext)) { |
| 3431 | extidx = -1; /* already has an ext */ |
| 3432 | break; |
| 3433 | } |
| 3434 | do { |
| 3435 | #endif |
| 3436 | DEBUG_p(PerlIO_printf(Perl_debug_log, |
| 3437 | "Looking for %s\n",cur)); |
| 3438 | if (PerlLIO_stat(cur,&PL_statbuf) >= 0 |
| 3439 | && !S_ISDIR(PL_statbuf.st_mode)) { |
| 3440 | dosearch = 0; |
| 3441 | scriptname = cur; |
| 3442 | #ifdef SEARCH_EXTS |
| 3443 | break; |
| 3444 | #endif |
| 3445 | } |
| 3446 | #ifdef SEARCH_EXTS |
| 3447 | if (cur == scriptname) { |
| 3448 | len = strlen(scriptname); |
| 3449 | if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf)) |
| 3450 | break; |
| 3451 | my_strlcpy(tmpbuf, scriptname, sizeof(tmpbuf)); |
| 3452 | cur = tmpbuf; |
| 3453 | } |
| 3454 | } while (extidx >= 0 && ext[extidx] /* try an extension? */ |
| 3455 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len)); |
| 3456 | #endif |
| 3457 | } |
| 3458 | #endif |
| 3459 | |
| 3460 | if (dosearch && !strchr(scriptname, '/') |
| 3461 | #ifdef DOSISH |
| 3462 | && !strchr(scriptname, '\\') |
| 3463 | #endif |
| 3464 | && (s = PerlEnv_getenv("PATH"))) |
| 3465 | { |
| 3466 | bool seen_dot = 0; |
| 3467 | |
| 3468 | bufend = s + strlen(s); |
| 3469 | while (s < bufend) { |
| 3470 | # ifdef DOSISH |
| 3471 | for (len = 0; *s |
| 3472 | && *s != ';'; len++, s++) { |
| 3473 | if (len < sizeof tmpbuf) |
| 3474 | tmpbuf[len] = *s; |
| 3475 | } |
| 3476 | if (len < sizeof tmpbuf) |
| 3477 | tmpbuf[len] = '\0'; |
| 3478 | # else |
| 3479 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, bufend, |
| 3480 | ':', |
| 3481 | &len); |
| 3482 | # endif |
| 3483 | if (s < bufend) |
| 3484 | s++; |
| 3485 | if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf) |
| 3486 | continue; /* don't search dir with too-long name */ |
| 3487 | if (len |
| 3488 | # ifdef DOSISH |
| 3489 | && tmpbuf[len - 1] != '/' |
| 3490 | && tmpbuf[len - 1] != '\\' |
| 3491 | # endif |
| 3492 | ) |
| 3493 | tmpbuf[len++] = '/'; |
| 3494 | if (len == 2 && tmpbuf[0] == '.') |
| 3495 | seen_dot = 1; |
| 3496 | (void)my_strlcpy(tmpbuf + len, scriptname, sizeof(tmpbuf) - len); |
| 3497 | #endif /* !VMS */ |
| 3498 | |
| 3499 | #ifdef SEARCH_EXTS |
| 3500 | len = strlen(tmpbuf); |
| 3501 | if (extidx > 0) /* reset after previous loop */ |
| 3502 | extidx = 0; |
| 3503 | do { |
| 3504 | #endif |
| 3505 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf)); |
| 3506 | retval = PerlLIO_stat(tmpbuf,&PL_statbuf); |
| 3507 | if (S_ISDIR(PL_statbuf.st_mode)) { |
| 3508 | retval = -1; |
| 3509 | } |
| 3510 | #ifdef SEARCH_EXTS |
| 3511 | } while ( retval < 0 /* not there */ |
| 3512 | && extidx>=0 && ext[extidx] /* try an extension? */ |
| 3513 | && my_strlcpy(tmpbuf+len, ext[extidx++], sizeof(tmpbuf) - len) |
| 3514 | ); |
| 3515 | #endif |
| 3516 | if (retval < 0) |
| 3517 | continue; |
| 3518 | if (S_ISREG(PL_statbuf.st_mode) |
| 3519 | && cando(S_IRUSR,TRUE,&PL_statbuf) |
| 3520 | #if !defined(DOSISH) |
| 3521 | && cando(S_IXUSR,TRUE,&PL_statbuf) |
| 3522 | #endif |
| 3523 | ) |
| 3524 | { |
| 3525 | xfound = tmpbuf; /* bingo! */ |
| 3526 | break; |
| 3527 | } |
| 3528 | if (!xfailed) |
| 3529 | xfailed = savepv(tmpbuf); |
| 3530 | } |
| 3531 | #ifndef DOSISH |
| 3532 | if (!xfound && !seen_dot && !xfailed && |
| 3533 | (PerlLIO_stat(scriptname,&PL_statbuf) < 0 |
| 3534 | || S_ISDIR(PL_statbuf.st_mode))) |
| 3535 | #endif |
| 3536 | seen_dot = 1; /* Disable message. */ |
| 3537 | if (!xfound) { |
| 3538 | if (flags & 1) { /* do or die? */ |
| 3539 | /* diag_listed_as: Can't execute %s */ |
| 3540 | Perl_croak(aTHX_ "Can't %s %s%s%s", |
| 3541 | (xfailed ? "execute" : "find"), |
| 3542 | (xfailed ? xfailed : scriptname), |
| 3543 | (xfailed ? "" : " on PATH"), |
| 3544 | (xfailed || seen_dot) ? "" : ", '.' not in PATH"); |
| 3545 | } |
| 3546 | scriptname = NULL; |
| 3547 | } |
| 3548 | Safefree(xfailed); |
| 3549 | scriptname = xfound; |
| 3550 | } |
| 3551 | return (scriptname ? savepv(scriptname) : NULL); |
| 3552 | } |
| 3553 | |
| 3554 | #ifndef PERL_GET_CONTEXT_DEFINED |
| 3555 | |
| 3556 | void * |
| 3557 | Perl_get_context(void) |
| 3558 | { |
| 3559 | dVAR; |
| 3560 | #if defined(USE_ITHREADS) |
| 3561 | # ifdef OLD_PTHREADS_API |
| 3562 | pthread_addr_t t; |
| 3563 | int error = pthread_getspecific(PL_thr_key, &t) |
| 3564 | if (error) |
| 3565 | Perl_croak_nocontext("panic: pthread_getspecific, error=%d", error); |
| 3566 | return (void*)t; |
| 3567 | # else |
| 3568 | # ifdef I_MACH_CTHREADS |
| 3569 | return (void*)cthread_data(cthread_self()); |
| 3570 | # else |
| 3571 | return (void*)PTHREAD_GETSPECIFIC(PL_thr_key); |
| 3572 | # endif |
| 3573 | # endif |
| 3574 | #else |
| 3575 | return (void*)NULL; |
| 3576 | #endif |
| 3577 | } |
| 3578 | |
| 3579 | void |
| 3580 | Perl_set_context(void *t) |
| 3581 | { |
| 3582 | dVAR; |
| 3583 | PERL_ARGS_ASSERT_SET_CONTEXT; |
| 3584 | #if defined(USE_ITHREADS) |
| 3585 | # ifdef I_MACH_CTHREADS |
| 3586 | cthread_set_data(cthread_self(), t); |
| 3587 | # else |
| 3588 | { |
| 3589 | const int error = pthread_setspecific(PL_thr_key, t); |
| 3590 | if (error) |
| 3591 | Perl_croak_nocontext("panic: pthread_setspecific, error=%d", error); |
| 3592 | } |
| 3593 | # endif |
| 3594 | #else |
| 3595 | PERL_UNUSED_ARG(t); |
| 3596 | #endif |
| 3597 | } |
| 3598 | |
| 3599 | #endif /* !PERL_GET_CONTEXT_DEFINED */ |
| 3600 | |
| 3601 | #if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE) |
| 3602 | struct perl_vars * |
| 3603 | Perl_GetVars(pTHX) |
| 3604 | { |
| 3605 | return &PL_Vars; |
| 3606 | } |
| 3607 | #endif |
| 3608 | |
| 3609 | char ** |
| 3610 | Perl_get_op_names(pTHX) |
| 3611 | { |
| 3612 | PERL_UNUSED_CONTEXT; |
| 3613 | return (char **)PL_op_name; |
| 3614 | } |
| 3615 | |
| 3616 | char ** |
| 3617 | Perl_get_op_descs(pTHX) |
| 3618 | { |
| 3619 | PERL_UNUSED_CONTEXT; |
| 3620 | return (char **)PL_op_desc; |
| 3621 | } |
| 3622 | |
| 3623 | const char * |
| 3624 | Perl_get_no_modify(pTHX) |
| 3625 | { |
| 3626 | PERL_UNUSED_CONTEXT; |
| 3627 | return PL_no_modify; |
| 3628 | } |
| 3629 | |
| 3630 | U32 * |
| 3631 | Perl_get_opargs(pTHX) |
| 3632 | { |
| 3633 | PERL_UNUSED_CONTEXT; |
| 3634 | return (U32 *)PL_opargs; |
| 3635 | } |
| 3636 | |
| 3637 | PPADDR_t* |
| 3638 | Perl_get_ppaddr(pTHX) |
| 3639 | { |
| 3640 | dVAR; |
| 3641 | PERL_UNUSED_CONTEXT; |
| 3642 | return (PPADDR_t*)PL_ppaddr; |
| 3643 | } |
| 3644 | |
| 3645 | #ifndef HAS_GETENV_LEN |
| 3646 | char * |
| 3647 | Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len) |
| 3648 | { |
| 3649 | char * const env_trans = PerlEnv_getenv(env_elem); |
| 3650 | PERL_UNUSED_CONTEXT; |
| 3651 | PERL_ARGS_ASSERT_GETENV_LEN; |
| 3652 | if (env_trans) |
| 3653 | *len = strlen(env_trans); |
| 3654 | return env_trans; |
| 3655 | } |
| 3656 | #endif |
| 3657 | |
| 3658 | |
| 3659 | MGVTBL* |
| 3660 | Perl_get_vtbl(pTHX_ int vtbl_id) |
| 3661 | { |
| 3662 | PERL_UNUSED_CONTEXT; |
| 3663 | |
| 3664 | return (vtbl_id < 0 || vtbl_id >= magic_vtable_max) |
| 3665 | ? NULL : PL_magic_vtables + vtbl_id; |
| 3666 | } |
| 3667 | |
| 3668 | I32 |
| 3669 | Perl_my_fflush_all(pTHX) |
| 3670 | { |
| 3671 | #if defined(USE_PERLIO) || defined(FFLUSH_NULL) || defined(USE_SFIO) |
| 3672 | return PerlIO_flush(NULL); |
| 3673 | #else |
| 3674 | # if defined(HAS__FWALK) |
| 3675 | extern int fflush(FILE *); |
| 3676 | /* undocumented, unprototyped, but very useful BSDism */ |
| 3677 | extern void _fwalk(int (*)(FILE *)); |
| 3678 | _fwalk(&fflush); |
| 3679 | return 0; |
| 3680 | # else |
| 3681 | # if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY) |
| 3682 | long open_max = -1; |
| 3683 | # ifdef PERL_FFLUSH_ALL_FOPEN_MAX |
| 3684 | open_max = PERL_FFLUSH_ALL_FOPEN_MAX; |
| 3685 | # else |
| 3686 | # if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX) |
| 3687 | open_max = sysconf(_SC_OPEN_MAX); |
| 3688 | # else |
| 3689 | # ifdef FOPEN_MAX |
| 3690 | open_max = FOPEN_MAX; |
| 3691 | # else |
| 3692 | # ifdef OPEN_MAX |
| 3693 | open_max = OPEN_MAX; |
| 3694 | # else |
| 3695 | # ifdef _NFILE |
| 3696 | open_max = _NFILE; |
| 3697 | # endif |
| 3698 | # endif |
| 3699 | # endif |
| 3700 | # endif |
| 3701 | # endif |
| 3702 | if (open_max > 0) { |
| 3703 | long i; |
| 3704 | for (i = 0; i < open_max; i++) |
| 3705 | if (STDIO_STREAM_ARRAY[i]._file >= 0 && |
| 3706 | STDIO_STREAM_ARRAY[i]._file < open_max && |
| 3707 | STDIO_STREAM_ARRAY[i]._flag) |
| 3708 | PerlIO_flush(&STDIO_STREAM_ARRAY[i]); |
| 3709 | return 0; |
| 3710 | } |
| 3711 | # endif |
| 3712 | SETERRNO(EBADF,RMS_IFI); |
| 3713 | return EOF; |
| 3714 | # endif |
| 3715 | #endif |
| 3716 | } |
| 3717 | |
| 3718 | void |
| 3719 | Perl_report_wrongway_fh(pTHX_ const GV *gv, const char have) |
| 3720 | { |
| 3721 | if (ckWARN(WARN_IO)) { |
| 3722 | HEK * const name |
| 3723 | = gv && (isGV_with_GP(gv)) |
| 3724 | ? GvENAME_HEK((gv)) |
| 3725 | : NULL; |
| 3726 | const char * const direction = have == '>' ? "out" : "in"; |
| 3727 | |
| 3728 | if (name && HEK_LEN(name)) |
| 3729 | Perl_warner(aTHX_ packWARN(WARN_IO), |
| 3730 | "Filehandle %"HEKf" opened only for %sput", |
| 3731 | name, direction); |
| 3732 | else |
| 3733 | Perl_warner(aTHX_ packWARN(WARN_IO), |
| 3734 | "Filehandle opened only for %sput", direction); |
| 3735 | } |
| 3736 | } |
| 3737 | |
| 3738 | void |
| 3739 | Perl_report_evil_fh(pTHX_ const GV *gv) |
| 3740 | { |
| 3741 | const IO *io = gv ? GvIO(gv) : NULL; |
| 3742 | const PERL_BITFIELD16 op = PL_op->op_type; |
| 3743 | const char *vile; |
| 3744 | I32 warn_type; |
| 3745 | |
| 3746 | if (io && IoTYPE(io) == IoTYPE_CLOSED) { |
| 3747 | vile = "closed"; |
| 3748 | warn_type = WARN_CLOSED; |
| 3749 | } |
| 3750 | else { |
| 3751 | vile = "unopened"; |
| 3752 | warn_type = WARN_UNOPENED; |
| 3753 | } |
| 3754 | |
| 3755 | if (ckWARN(warn_type)) { |
| 3756 | SV * const name |
| 3757 | = gv && isGV_with_GP(gv) && GvENAMELEN(gv) ? |
| 3758 | sv_2mortal(newSVhek(GvENAME_HEK(gv))) : NULL; |
| 3759 | const char * const pars = |
| 3760 | (const char *)(OP_IS_FILETEST(op) ? "" : "()"); |
| 3761 | const char * const func = |
| 3762 | (const char *) |
| 3763 | (op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */ |
| 3764 | op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */ |
| 3765 | PL_op_desc[op]); |
| 3766 | const char * const type = |
| 3767 | (const char *) |
| 3768 | (OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) |
| 3769 | ? "socket" : "filehandle"); |
| 3770 | const bool have_name = name && SvCUR(name); |
| 3771 | Perl_warner(aTHX_ packWARN(warn_type), |
| 3772 | "%s%s on %s %s%s%"SVf, func, pars, vile, type, |
| 3773 | have_name ? " " : "", |
| 3774 | SVfARG(have_name ? name : &PL_sv_no)); |
| 3775 | if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP)) |
| 3776 | Perl_warner( |
| 3777 | aTHX_ packWARN(warn_type), |
| 3778 | "\t(Are you trying to call %s%s on dirhandle%s%"SVf"?)\n", |
| 3779 | func, pars, have_name ? " " : "", |
| 3780 | SVfARG(have_name ? name : &PL_sv_no) |
| 3781 | ); |
| 3782 | } |
| 3783 | } |
| 3784 | |
| 3785 | /* To workaround core dumps from the uninitialised tm_zone we get the |
| 3786 | * system to give us a reasonable struct to copy. This fix means that |
| 3787 | * strftime uses the tm_zone and tm_gmtoff values returned by |
| 3788 | * localtime(time()). That should give the desired result most of the |
| 3789 | * time. But probably not always! |
| 3790 | * |
| 3791 | * This does not address tzname aspects of NETaa14816. |
| 3792 | * |
| 3793 | */ |
| 3794 | |
| 3795 | #ifdef HAS_GNULIBC |
| 3796 | # ifndef STRUCT_TM_HASZONE |
| 3797 | # define STRUCT_TM_HASZONE |
| 3798 | # endif |
| 3799 | #endif |
| 3800 | |
| 3801 | #ifdef STRUCT_TM_HASZONE /* Backward compat */ |
| 3802 | # ifndef HAS_TM_TM_ZONE |
| 3803 | # define HAS_TM_TM_ZONE |
| 3804 | # endif |
| 3805 | #endif |
| 3806 | |
| 3807 | void |
| 3808 | Perl_init_tm(pTHX_ struct tm *ptm) /* see mktime, strftime and asctime */ |
| 3809 | { |
| 3810 | #ifdef HAS_TM_TM_ZONE |
| 3811 | Time_t now; |
| 3812 | const struct tm* my_tm; |
| 3813 | PERL_ARGS_ASSERT_INIT_TM; |
| 3814 | (void)time(&now); |
| 3815 | my_tm = localtime(&now); |
| 3816 | if (my_tm) |
| 3817 | Copy(my_tm, ptm, 1, struct tm); |
| 3818 | #else |
| 3819 | PERL_ARGS_ASSERT_INIT_TM; |
| 3820 | PERL_UNUSED_ARG(ptm); |
| 3821 | #endif |
| 3822 | } |
| 3823 | |
| 3824 | /* |
| 3825 | * mini_mktime - normalise struct tm values without the localtime() |
| 3826 | * semantics (and overhead) of mktime(). |
| 3827 | */ |
| 3828 | void |
| 3829 | Perl_mini_mktime(pTHX_ struct tm *ptm) |
| 3830 | { |
| 3831 | int yearday; |
| 3832 | int secs; |
| 3833 | int month, mday, year, jday; |
| 3834 | int odd_cent, odd_year; |
| 3835 | PERL_UNUSED_CONTEXT; |
| 3836 | |
| 3837 | PERL_ARGS_ASSERT_MINI_MKTIME; |
| 3838 | |
| 3839 | #define DAYS_PER_YEAR 365 |
| 3840 | #define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1) |
| 3841 | #define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1) |
| 3842 | #define DAYS_PER_QCENT (4*DAYS_PER_CENT+1) |
| 3843 | #define SECS_PER_HOUR (60*60) |
| 3844 | #define SECS_PER_DAY (24*SECS_PER_HOUR) |
| 3845 | /* parentheses deliberately absent on these two, otherwise they don't work */ |
| 3846 | #define MONTH_TO_DAYS 153/5 |
| 3847 | #define DAYS_TO_MONTH 5/153 |
| 3848 | /* offset to bias by March (month 4) 1st between month/mday & year finding */ |
| 3849 | #define YEAR_ADJUST (4*MONTH_TO_DAYS+1) |
| 3850 | /* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */ |
| 3851 | #define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */ |
| 3852 | |
| 3853 | /* |
| 3854 | * Year/day algorithm notes: |
| 3855 | * |
| 3856 | * With a suitable offset for numeric value of the month, one can find |
| 3857 | * an offset into the year by considering months to have 30.6 (153/5) days, |
| 3858 | * using integer arithmetic (i.e., with truncation). To avoid too much |
| 3859 | * messing about with leap days, we consider January and February to be |
| 3860 | * the 13th and 14th month of the previous year. After that transformation, |
| 3861 | * we need the month index we use to be high by 1 from 'normal human' usage, |
| 3862 | * so the month index values we use run from 4 through 15. |
| 3863 | * |
| 3864 | * Given that, and the rules for the Gregorian calendar (leap years are those |
| 3865 | * divisible by 4 unless also divisible by 100, when they must be divisible |
| 3866 | * by 400 instead), we can simply calculate the number of days since some |
| 3867 | * arbitrary 'beginning of time' by futzing with the (adjusted) year number, |
| 3868 | * the days we derive from our month index, and adding in the day of the |
| 3869 | * month. The value used here is not adjusted for the actual origin which |
| 3870 | * it normally would use (1 January A.D. 1), since we're not exposing it. |
| 3871 | * We're only building the value so we can turn around and get the |
| 3872 | * normalised values for the year, month, day-of-month, and day-of-year. |
| 3873 | * |
| 3874 | * For going backward, we need to bias the value we're using so that we find |
| 3875 | * the right year value. (Basically, we don't want the contribution of |
| 3876 | * March 1st to the number to apply while deriving the year). Having done |
| 3877 | * that, we 'count up' the contribution to the year number by accounting for |
| 3878 | * full quadracenturies (400-year periods) with their extra leap days, plus |
| 3879 | * the contribution from full centuries (to avoid counting in the lost leap |
| 3880 | * days), plus the contribution from full quad-years (to count in the normal |
| 3881 | * leap days), plus the leftover contribution from any non-leap years. |
| 3882 | * At this point, if we were working with an actual leap day, we'll have 0 |
| 3883 | * days left over. This is also true for March 1st, however. So, we have |
| 3884 | * to special-case that result, and (earlier) keep track of the 'odd' |
| 3885 | * century and year contributions. If we got 4 extra centuries in a qcent, |
| 3886 | * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. |
| 3887 | * Otherwise, we add back in the earlier bias we removed (the 123 from |
| 3888 | * figuring in March 1st), find the month index (integer division by 30.6), |
| 3889 | * and the remainder is the day-of-month. We then have to convert back to |
| 3890 | * 'real' months (including fixing January and February from being 14/15 in |
| 3891 | * the previous year to being in the proper year). After that, to get |
| 3892 | * tm_yday, we work with the normalised year and get a new yearday value for |
| 3893 | * January 1st, which we subtract from the yearday value we had earlier, |
| 3894 | * representing the date we've re-built. This is done from January 1 |
| 3895 | * because tm_yday is 0-origin. |
| 3896 | * |
| 3897 | * Since POSIX time routines are only guaranteed to work for times since the |
| 3898 | * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm |
| 3899 | * applies Gregorian calendar rules even to dates before the 16th century |
| 3900 | * doesn't bother me. Besides, you'd need cultural context for a given |
| 3901 | * date to know whether it was Julian or Gregorian calendar, and that's |
| 3902 | * outside the scope for this routine. Since we convert back based on the |
| 3903 | * same rules we used to build the yearday, you'll only get strange results |
| 3904 | * for input which needed normalising, or for the 'odd' century years which |
| 3905 | * were leap years in the Julian calendar but not in the Gregorian one. |
| 3906 | * I can live with that. |
| 3907 | * |
| 3908 | * This algorithm also fails to handle years before A.D. 1 gracefully, but |
| 3909 | * that's still outside the scope for POSIX time manipulation, so I don't |
| 3910 | * care. |
| 3911 | */ |
| 3912 | |
| 3913 | year = 1900 + ptm->tm_year; |
| 3914 | month = ptm->tm_mon; |
| 3915 | mday = ptm->tm_mday; |
| 3916 | jday = 0; |
| 3917 | if (month >= 2) |
| 3918 | month+=2; |
| 3919 | else |
| 3920 | month+=14, year--; |
| 3921 | yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400; |
| 3922 | yearday += month*MONTH_TO_DAYS + mday + jday; |
| 3923 | /* |
| 3924 | * Note that we don't know when leap-seconds were or will be, |
| 3925 | * so we have to trust the user if we get something which looks |
| 3926 | * like a sensible leap-second. Wild values for seconds will |
| 3927 | * be rationalised, however. |
| 3928 | */ |
| 3929 | if ((unsigned) ptm->tm_sec <= 60) { |
| 3930 | secs = 0; |
| 3931 | } |
| 3932 | else { |
| 3933 | secs = ptm->tm_sec; |
| 3934 | ptm->tm_sec = 0; |
| 3935 | } |
| 3936 | secs += 60 * ptm->tm_min; |
| 3937 | secs += SECS_PER_HOUR * ptm->tm_hour; |
| 3938 | if (secs < 0) { |
| 3939 | if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) { |
| 3940 | /* got negative remainder, but need positive time */ |
| 3941 | /* back off an extra day to compensate */ |
| 3942 | yearday += (secs/SECS_PER_DAY)-1; |
| 3943 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1); |
| 3944 | } |
| 3945 | else { |
| 3946 | yearday += (secs/SECS_PER_DAY); |
| 3947 | secs -= SECS_PER_DAY * (secs/SECS_PER_DAY); |
| 3948 | } |
| 3949 | } |
| 3950 | else if (secs >= SECS_PER_DAY) { |
| 3951 | yearday += (secs/SECS_PER_DAY); |
| 3952 | secs %= SECS_PER_DAY; |
| 3953 | } |
| 3954 | ptm->tm_hour = secs/SECS_PER_HOUR; |
| 3955 | secs %= SECS_PER_HOUR; |
| 3956 | ptm->tm_min = secs/60; |
| 3957 | secs %= 60; |
| 3958 | ptm->tm_sec += secs; |
| 3959 | /* done with time of day effects */ |
| 3960 | /* |
| 3961 | * The algorithm for yearday has (so far) left it high by 428. |
| 3962 | * To avoid mistaking a legitimate Feb 29 as Mar 1, we need to |
| 3963 | * bias it by 123 while trying to figure out what year it |
| 3964 | * really represents. Even with this tweak, the reverse |
| 3965 | * translation fails for years before A.D. 0001. |
| 3966 | * It would still fail for Feb 29, but we catch that one below. |
| 3967 | */ |
| 3968 | jday = yearday; /* save for later fixup vis-a-vis Jan 1 */ |
| 3969 | yearday -= YEAR_ADJUST; |
| 3970 | year = (yearday / DAYS_PER_QCENT) * 400; |
| 3971 | yearday %= DAYS_PER_QCENT; |
| 3972 | odd_cent = yearday / DAYS_PER_CENT; |
| 3973 | year += odd_cent * 100; |
| 3974 | yearday %= DAYS_PER_CENT; |
| 3975 | year += (yearday / DAYS_PER_QYEAR) * 4; |
| 3976 | yearday %= DAYS_PER_QYEAR; |
| 3977 | odd_year = yearday / DAYS_PER_YEAR; |
| 3978 | year += odd_year; |
| 3979 | yearday %= DAYS_PER_YEAR; |
| 3980 | if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */ |
| 3981 | month = 1; |
| 3982 | yearday = 29; |
| 3983 | } |
| 3984 | else { |
| 3985 | yearday += YEAR_ADJUST; /* recover March 1st crock */ |
| 3986 | month = yearday*DAYS_TO_MONTH; |
| 3987 | yearday -= month*MONTH_TO_DAYS; |
| 3988 | /* recover other leap-year adjustment */ |
| 3989 | if (month > 13) { |
| 3990 | month-=14; |
| 3991 | year++; |
| 3992 | } |
| 3993 | else { |
| 3994 | month-=2; |
| 3995 | } |
| 3996 | } |
| 3997 | ptm->tm_year = year - 1900; |
| 3998 | if (yearday) { |
| 3999 | ptm->tm_mday = yearday; |
| 4000 | ptm->tm_mon = month; |
| 4001 | } |
| 4002 | else { |
| 4003 | ptm->tm_mday = 31; |
| 4004 | ptm->tm_mon = month - 1; |
| 4005 | } |
| 4006 | /* re-build yearday based on Jan 1 to get tm_yday */ |
| 4007 | year--; |
| 4008 | yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400; |
| 4009 | yearday += 14*MONTH_TO_DAYS + 1; |
| 4010 | ptm->tm_yday = jday - yearday; |
| 4011 | ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; |
| 4012 | } |
| 4013 | |
| 4014 | char * |
| 4015 | Perl_my_strftime(pTHX_ const char *fmt, int sec, int min, int hour, int mday, int mon, int year, int wday, int yday, int isdst) |
| 4016 | { |
| 4017 | #ifdef HAS_STRFTIME |
| 4018 | char *buf; |
| 4019 | int buflen; |
| 4020 | struct tm mytm; |
| 4021 | int len; |
| 4022 | |
| 4023 | PERL_ARGS_ASSERT_MY_STRFTIME; |
| 4024 | |
| 4025 | init_tm(&mytm); /* XXX workaround - see init_tm() above */ |
| 4026 | mytm.tm_sec = sec; |
| 4027 | mytm.tm_min = min; |
| 4028 | mytm.tm_hour = hour; |
| 4029 | mytm.tm_mday = mday; |
| 4030 | mytm.tm_mon = mon; |
| 4031 | mytm.tm_year = year; |
| 4032 | mytm.tm_wday = wday; |
| 4033 | mytm.tm_yday = yday; |
| 4034 | mytm.tm_isdst = isdst; |
| 4035 | mini_mktime(&mytm); |
| 4036 | /* use libc to get the values for tm_gmtoff and tm_zone [perl #18238] */ |
| 4037 | #if defined(HAS_MKTIME) && (defined(HAS_TM_TM_GMTOFF) || defined(HAS_TM_TM_ZONE)) |
| 4038 | STMT_START { |
| 4039 | struct tm mytm2; |
| 4040 | mytm2 = mytm; |
| 4041 | mktime(&mytm2); |
| 4042 | #ifdef HAS_TM_TM_GMTOFF |
| 4043 | mytm.tm_gmtoff = mytm2.tm_gmtoff; |
| 4044 | #endif |
| 4045 | #ifdef HAS_TM_TM_ZONE |
| 4046 | mytm.tm_zone = mytm2.tm_zone; |
| 4047 | #endif |
| 4048 | } STMT_END; |
| 4049 | #endif |
| 4050 | buflen = 64; |
| 4051 | Newx(buf, buflen, char); |
| 4052 | len = strftime(buf, buflen, fmt, &mytm); |
| 4053 | /* |
| 4054 | ** The following is needed to handle to the situation where |
| 4055 | ** tmpbuf overflows. Basically we want to allocate a buffer |
| 4056 | ** and try repeatedly. The reason why it is so complicated |
| 4057 | ** is that getting a return value of 0 from strftime can indicate |
| 4058 | ** one of the following: |
| 4059 | ** 1. buffer overflowed, |
| 4060 | ** 2. illegal conversion specifier, or |
| 4061 | ** 3. the format string specifies nothing to be returned(not |
| 4062 | ** an error). This could be because format is an empty string |
| 4063 | ** or it specifies %p that yields an empty string in some locale. |
| 4064 | ** If there is a better way to make it portable, go ahead by |
| 4065 | ** all means. |
| 4066 | */ |
| 4067 | if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0')) |
| 4068 | return buf; |
| 4069 | else { |
| 4070 | /* Possibly buf overflowed - try again with a bigger buf */ |
| 4071 | const int fmtlen = strlen(fmt); |
| 4072 | int bufsize = fmtlen + buflen; |
| 4073 | |
| 4074 | Renew(buf, bufsize, char); |
| 4075 | while (buf) { |
| 4076 | buflen = strftime(buf, bufsize, fmt, &mytm); |
| 4077 | if (buflen > 0 && buflen < bufsize) |
| 4078 | break; |
| 4079 | /* heuristic to prevent out-of-memory errors */ |
| 4080 | if (bufsize > 100*fmtlen) { |
| 4081 | Safefree(buf); |
| 4082 | buf = NULL; |
| 4083 | break; |
| 4084 | } |
| 4085 | bufsize *= 2; |
| 4086 | Renew(buf, bufsize, char); |
| 4087 | } |
| 4088 | return buf; |
| 4089 | } |
| 4090 | #else |
| 4091 | Perl_croak(aTHX_ "panic: no strftime"); |
| 4092 | return NULL; |
| 4093 | #endif |
| 4094 | } |
| 4095 | |
| 4096 | |
| 4097 | #define SV_CWD_RETURN_UNDEF \ |
| 4098 | sv_setsv(sv, &PL_sv_undef); \ |
| 4099 | return FALSE |
| 4100 | |
| 4101 | #define SV_CWD_ISDOT(dp) \ |
| 4102 | (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \ |
| 4103 | (dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
| 4104 | |
| 4105 | /* |
| 4106 | =head1 Miscellaneous Functions |
| 4107 | |
| 4108 | =for apidoc getcwd_sv |
| 4109 | |
| 4110 | Fill the sv with current working directory |
| 4111 | |
| 4112 | =cut |
| 4113 | */ |
| 4114 | |
| 4115 | /* Originally written in Perl by John Bazik; rewritten in C by Ben Sugars. |
| 4116 | * rewritten again by dougm, optimized for use with xs TARG, and to prefer |
| 4117 | * getcwd(3) if available |
| 4118 | * Comments from the orignal: |
| 4119 | * This is a faster version of getcwd. It's also more dangerous |
| 4120 | * because you might chdir out of a directory that you can't chdir |
| 4121 | * back into. */ |
| 4122 | |
| 4123 | int |
| 4124 | Perl_getcwd_sv(pTHX_ register SV *sv) |
| 4125 | { |
| 4126 | #ifndef PERL_MICRO |
| 4127 | dVAR; |
| 4128 | #ifndef INCOMPLETE_TAINTS |
| 4129 | SvTAINTED_on(sv); |
| 4130 | #endif |
| 4131 | |
| 4132 | PERL_ARGS_ASSERT_GETCWD_SV; |
| 4133 | |
| 4134 | #ifdef HAS_GETCWD |
| 4135 | { |
| 4136 | char buf[MAXPATHLEN]; |
| 4137 | |
| 4138 | /* Some getcwd()s automatically allocate a buffer of the given |
| 4139 | * size from the heap if they are given a NULL buffer pointer. |
| 4140 | * The problem is that this behaviour is not portable. */ |
| 4141 | if (getcwd(buf, sizeof(buf) - 1)) { |
| 4142 | sv_setpv(sv, buf); |
| 4143 | return TRUE; |
| 4144 | } |
| 4145 | else { |
| 4146 | sv_setsv(sv, &PL_sv_undef); |
| 4147 | return FALSE; |
| 4148 | } |
| 4149 | } |
| 4150 | |
| 4151 | #else |
| 4152 | |
| 4153 | Stat_t statbuf; |
| 4154 | int orig_cdev, orig_cino, cdev, cino, odev, oino, tdev, tino; |
| 4155 | int pathlen=0; |
| 4156 | Direntry_t *dp; |
| 4157 | |
| 4158 | SvUPGRADE(sv, SVt_PV); |
| 4159 | |
| 4160 | if (PerlLIO_lstat(".", &statbuf) < 0) { |
| 4161 | SV_CWD_RETURN_UNDEF; |
| 4162 | } |
| 4163 | |
| 4164 | orig_cdev = statbuf.st_dev; |
| 4165 | orig_cino = statbuf.st_ino; |
| 4166 | cdev = orig_cdev; |
| 4167 | cino = orig_cino; |
| 4168 | |
| 4169 | for (;;) { |
| 4170 | DIR *dir; |
| 4171 | int namelen; |
| 4172 | odev = cdev; |
| 4173 | oino = cino; |
| 4174 | |
| 4175 | if (PerlDir_chdir("..") < 0) { |
| 4176 | SV_CWD_RETURN_UNDEF; |
| 4177 | } |
| 4178 | if (PerlLIO_stat(".", &statbuf) < 0) { |
| 4179 | SV_CWD_RETURN_UNDEF; |
| 4180 | } |
| 4181 | |
| 4182 | cdev = statbuf.st_dev; |
| 4183 | cino = statbuf.st_ino; |
| 4184 | |
| 4185 | if (odev == cdev && oino == cino) { |
| 4186 | break; |
| 4187 | } |
| 4188 | if (!(dir = PerlDir_open("."))) { |
| 4189 | SV_CWD_RETURN_UNDEF; |
| 4190 | } |
| 4191 | |
| 4192 | while ((dp = PerlDir_read(dir)) != NULL) { |
| 4193 | #ifdef DIRNAMLEN |
| 4194 | namelen = dp->d_namlen; |
| 4195 | #else |
| 4196 | namelen = strlen(dp->d_name); |
| 4197 | #endif |
| 4198 | /* skip . and .. */ |
| 4199 | if (SV_CWD_ISDOT(dp)) { |
| 4200 | continue; |
| 4201 | } |
| 4202 | |
| 4203 | if (PerlLIO_lstat(dp->d_name, &statbuf) < 0) { |
| 4204 | SV_CWD_RETURN_UNDEF; |
| 4205 | } |
| 4206 | |
| 4207 | tdev = statbuf.st_dev; |
| 4208 | tino = statbuf.st_ino; |
| 4209 | if (tino == oino && tdev == odev) { |
| 4210 | break; |
| 4211 | } |
| 4212 | } |
| 4213 | |
| 4214 | if (!dp) { |
| 4215 | SV_CWD_RETURN_UNDEF; |
| 4216 | } |
| 4217 | |
| 4218 | if (pathlen + namelen + 1 >= MAXPATHLEN) { |
| 4219 | SV_CWD_RETURN_UNDEF; |
| 4220 | } |
| 4221 | |
| 4222 | SvGROW(sv, pathlen + namelen + 1); |
| 4223 | |
| 4224 | if (pathlen) { |
| 4225 | /* shift down */ |
| 4226 | Move(SvPVX_const(sv), SvPVX(sv) + namelen + 1, pathlen, char); |
| 4227 | } |
| 4228 | |
| 4229 | /* prepend current directory to the front */ |
| 4230 | *SvPVX(sv) = '/'; |
| 4231 | Move(dp->d_name, SvPVX(sv)+1, namelen, char); |
| 4232 | pathlen += (namelen + 1); |
| 4233 | |
| 4234 | #ifdef VOID_CLOSEDIR |
| 4235 | PerlDir_close(dir); |
| 4236 | #else |
| 4237 | if (PerlDir_close(dir) < 0) { |
| 4238 | SV_CWD_RETURN_UNDEF; |
| 4239 | } |
| 4240 | #endif |
| 4241 | } |
| 4242 | |
| 4243 | if (pathlen) { |
| 4244 | SvCUR_set(sv, pathlen); |
| 4245 | *SvEND(sv) = '\0'; |
| 4246 | SvPOK_only(sv); |
| 4247 | |
| 4248 | if (PerlDir_chdir(SvPVX_const(sv)) < 0) { |
| 4249 | SV_CWD_RETURN_UNDEF; |
| 4250 | } |
| 4251 | } |
| 4252 | if (PerlLIO_stat(".", &statbuf) < 0) { |
| 4253 | SV_CWD_RETURN_UNDEF; |
| 4254 | } |
| 4255 | |
| 4256 | cdev = statbuf.st_dev; |
| 4257 | cino = statbuf.st_ino; |
| 4258 | |
| 4259 | if (cdev != orig_cdev || cino != orig_cino) { |
| 4260 | Perl_croak(aTHX_ "Unstable directory path, " |
| 4261 | "current directory changed unexpectedly"); |
| 4262 | } |
| 4263 | |
| 4264 | return TRUE; |
| 4265 | #endif |
| 4266 | |
| 4267 | #else |
| 4268 | return FALSE; |
| 4269 | #endif |
| 4270 | } |
| 4271 | |
| 4272 | #define VERSION_MAX 0x7FFFFFFF |
| 4273 | |
| 4274 | /* |
| 4275 | =for apidoc prescan_version |
| 4276 | |
| 4277 | Validate that a given string can be parsed as a version object, but doesn't |
| 4278 | actually perform the parsing. Can use either strict or lax validation rules. |
| 4279 | Can optionally set a number of hint variables to save the parsing code |
| 4280 | some time when tokenizing. |
| 4281 | |
| 4282 | =cut |
| 4283 | */ |
| 4284 | const char * |
| 4285 | Perl_prescan_version(pTHX_ const char *s, bool strict, |
| 4286 | const char **errstr, |
| 4287 | bool *sqv, int *ssaw_decimal, int *swidth, bool *salpha) { |
| 4288 | bool qv = (sqv ? *sqv : FALSE); |
| 4289 | int width = 3; |
| 4290 | int saw_decimal = 0; |
| 4291 | bool alpha = FALSE; |
| 4292 | const char *d = s; |
| 4293 | |
| 4294 | PERL_ARGS_ASSERT_PRESCAN_VERSION; |
| 4295 | |
| 4296 | if (qv && isDIGIT(*d)) |
| 4297 | goto dotted_decimal_version; |
| 4298 | |
| 4299 | if (*d == 'v') { /* explicit v-string */ |
| 4300 | d++; |
| 4301 | if (isDIGIT(*d)) { |
| 4302 | qv = TRUE; |
| 4303 | } |
| 4304 | else { /* degenerate v-string */ |
| 4305 | /* requires v1.2.3 */ |
| 4306 | BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)"); |
| 4307 | } |
| 4308 | |
| 4309 | dotted_decimal_version: |
| 4310 | if (strict && d[0] == '0' && isDIGIT(d[1])) { |
| 4311 | /* no leading zeros allowed */ |
| 4312 | BADVERSION(s,errstr,"Invalid version format (no leading zeros)"); |
| 4313 | } |
| 4314 | |
| 4315 | while (isDIGIT(*d)) /* integer part */ |
| 4316 | d++; |
| 4317 | |
| 4318 | if (*d == '.') |
| 4319 | { |
| 4320 | saw_decimal++; |
| 4321 | d++; /* decimal point */ |
| 4322 | } |
| 4323 | else |
| 4324 | { |
| 4325 | if (strict) { |
| 4326 | /* require v1.2.3 */ |
| 4327 | BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)"); |
| 4328 | } |
| 4329 | else { |
| 4330 | goto version_prescan_finish; |
| 4331 | } |
| 4332 | } |
| 4333 | |
| 4334 | { |
| 4335 | int i = 0; |
| 4336 | int j = 0; |
| 4337 | while (isDIGIT(*d)) { /* just keep reading */ |
| 4338 | i++; |
| 4339 | while (isDIGIT(*d)) { |
| 4340 | d++; j++; |
| 4341 | /* maximum 3 digits between decimal */ |
| 4342 | if (strict && j > 3) { |
| 4343 | BADVERSION(s,errstr,"Invalid version format (maximum 3 digits between decimals)"); |
| 4344 | } |
| 4345 | } |
| 4346 | if (*d == '_') { |
| 4347 | if (strict) { |
| 4348 | BADVERSION(s,errstr,"Invalid version format (no underscores)"); |
| 4349 | } |
| 4350 | if ( alpha ) { |
| 4351 | BADVERSION(s,errstr,"Invalid version format (multiple underscores)"); |
| 4352 | } |
| 4353 | d++; |
| 4354 | alpha = TRUE; |
| 4355 | } |
| 4356 | else if (*d == '.') { |
| 4357 | if (alpha) { |
| 4358 | BADVERSION(s,errstr,"Invalid version format (underscores before decimal)"); |
| 4359 | } |
| 4360 | saw_decimal++; |
| 4361 | d++; |
| 4362 | } |
| 4363 | else if (!isDIGIT(*d)) { |
| 4364 | break; |
| 4365 | } |
| 4366 | j = 0; |
| 4367 | } |
| 4368 | |
| 4369 | if (strict && i < 2) { |
| 4370 | /* requires v1.2.3 */ |
| 4371 | BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions require at least three parts)"); |
| 4372 | } |
| 4373 | } |
| 4374 | } /* end if dotted-decimal */ |
| 4375 | else |
| 4376 | { /* decimal versions */ |
| 4377 | int j = 0; /* may need this later */ |
| 4378 | /* special strict case for leading '.' or '0' */ |
| 4379 | if (strict) { |
| 4380 | if (*d == '.') { |
| 4381 | BADVERSION(s,errstr,"Invalid version format (0 before decimal required)"); |
| 4382 | } |
| 4383 | if (*d == '0' && isDIGIT(d[1])) { |
| 4384 | BADVERSION(s,errstr,"Invalid version format (no leading zeros)"); |
| 4385 | } |
| 4386 | } |
| 4387 | |
| 4388 | /* and we never support negative versions */ |
| 4389 | if ( *d == '-') { |
| 4390 | BADVERSION(s,errstr,"Invalid version format (negative version number)"); |
| 4391 | } |
| 4392 | |
| 4393 | /* consume all of the integer part */ |
| 4394 | while (isDIGIT(*d)) |
| 4395 | d++; |
| 4396 | |
| 4397 | /* look for a fractional part */ |
| 4398 | if (*d == '.') { |
| 4399 | /* we found it, so consume it */ |
| 4400 | saw_decimal++; |
| 4401 | d++; |
| 4402 | } |
| 4403 | else if (!*d || *d == ';' || isSPACE(*d) || *d == '{' || *d == '}') { |
| 4404 | if ( d == s ) { |
| 4405 | /* found nothing */ |
| 4406 | BADVERSION(s,errstr,"Invalid version format (version required)"); |
| 4407 | } |
| 4408 | /* found just an integer */ |
| 4409 | goto version_prescan_finish; |
| 4410 | } |
| 4411 | else if ( d == s ) { |
| 4412 | /* didn't find either integer or period */ |
| 4413 | BADVERSION(s,errstr,"Invalid version format (non-numeric data)"); |
| 4414 | } |
| 4415 | else if (*d == '_') { |
| 4416 | /* underscore can't come after integer part */ |
| 4417 | if (strict) { |
| 4418 | BADVERSION(s,errstr,"Invalid version format (no underscores)"); |
| 4419 | } |
| 4420 | else if (isDIGIT(d[1])) { |
| 4421 | BADVERSION(s,errstr,"Invalid version format (alpha without decimal)"); |
| 4422 | } |
| 4423 | else { |
| 4424 | BADVERSION(s,errstr,"Invalid version format (misplaced underscore)"); |
| 4425 | } |
| 4426 | } |
| 4427 | else { |
| 4428 | /* anything else after integer part is just invalid data */ |
| 4429 | BADVERSION(s,errstr,"Invalid version format (non-numeric data)"); |
| 4430 | } |
| 4431 | |
| 4432 | /* scan the fractional part after the decimal point*/ |
| 4433 | |
| 4434 | if (!isDIGIT(*d) && (strict || ! (!*d || *d == ';' || isSPACE(*d) || *d == '{' || *d == '}') )) { |
| 4435 | /* strict or lax-but-not-the-end */ |
| 4436 | BADVERSION(s,errstr,"Invalid version format (fractional part required)"); |
| 4437 | } |
| 4438 | |
| 4439 | while (isDIGIT(*d)) { |
| 4440 | d++; j++; |
| 4441 | if (*d == '.' && isDIGIT(d[-1])) { |
| 4442 | if (alpha) { |
| 4443 | BADVERSION(s,errstr,"Invalid version format (underscores before decimal)"); |
| 4444 | } |
| 4445 | if (strict) { |
| 4446 | BADVERSION(s,errstr,"Invalid version format (dotted-decimal versions must begin with 'v')"); |
| 4447 | } |
| 4448 | d = (char *)s; /* start all over again */ |
| 4449 | qv = TRUE; |
| 4450 | goto dotted_decimal_version; |
| 4451 | } |
| 4452 | if (*d == '_') { |
| 4453 | if (strict) { |
| 4454 | BADVERSION(s,errstr,"Invalid version format (no underscores)"); |
| 4455 | } |
| 4456 | if ( alpha ) { |
| 4457 | BADVERSION(s,errstr,"Invalid version format (multiple underscores)"); |
| 4458 | } |
| 4459 | if ( ! isDIGIT(d[1]) ) { |
| 4460 | BADVERSION(s,errstr,"Invalid version format (misplaced underscore)"); |
| 4461 | } |
| 4462 | width = j; |
| 4463 | d++; |
| 4464 | alpha = TRUE; |
| 4465 | } |
| 4466 | } |
| 4467 | } |
| 4468 | |
| 4469 | version_prescan_finish: |
| 4470 | while (isSPACE(*d)) |
| 4471 | d++; |
| 4472 | |
| 4473 | if (!isDIGIT(*d) && (! (!*d || *d == ';' || *d == '{' || *d == '}') )) { |
| 4474 | /* trailing non-numeric data */ |
| 4475 | BADVERSION(s,errstr,"Invalid version format (non-numeric data)"); |
| 4476 | } |
| 4477 | |
| 4478 | if (sqv) |
| 4479 | *sqv = qv; |
| 4480 | if (swidth) |
| 4481 | *swidth = width; |
| 4482 | if (ssaw_decimal) |
| 4483 | *ssaw_decimal = saw_decimal; |
| 4484 | if (salpha) |
| 4485 | *salpha = alpha; |
| 4486 | return d; |
| 4487 | } |
| 4488 | |
| 4489 | /* |
| 4490 | =for apidoc scan_version |
| 4491 | |
| 4492 | Returns a pointer to the next character after the parsed |
| 4493 | version string, as well as upgrading the passed in SV to |
| 4494 | an RV. |
| 4495 | |
| 4496 | Function must be called with an already existing SV like |
| 4497 | |
| 4498 | sv = newSV(0); |
| 4499 | s = scan_version(s, SV *sv, bool qv); |
| 4500 | |
| 4501 | Performs some preprocessing to the string to ensure that |
| 4502 | it has the correct characteristics of a version. Flags the |
| 4503 | object if it contains an underscore (which denotes this |
| 4504 | is an alpha version). The boolean qv denotes that the version |
| 4505 | should be interpreted as if it had multiple decimals, even if |
| 4506 | it doesn't. |
| 4507 | |
| 4508 | =cut |
| 4509 | */ |
| 4510 | |
| 4511 | const char * |
| 4512 | Perl_scan_version(pTHX_ const char *s, SV *rv, bool qv) |
| 4513 | { |
| 4514 | const char *start; |
| 4515 | const char *pos; |
| 4516 | const char *last; |
| 4517 | const char *errstr = NULL; |
| 4518 | int saw_decimal = 0; |
| 4519 | int width = 3; |
| 4520 | bool alpha = FALSE; |
| 4521 | bool vinf = FALSE; |
| 4522 | AV * const av = newAV(); |
| 4523 | SV * const hv = newSVrv(rv, "version"); /* create an SV and upgrade the RV */ |
| 4524 | |
| 4525 | PERL_ARGS_ASSERT_SCAN_VERSION; |
| 4526 | |
| 4527 | (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */ |
| 4528 | |
| 4529 | #ifndef NODEFAULT_SHAREKEYS |
| 4530 | HvSHAREKEYS_on(hv); /* key-sharing on by default */ |
| 4531 | #endif |
| 4532 | |
| 4533 | while (isSPACE(*s)) /* leading whitespace is OK */ |
| 4534 | s++; |
| 4535 | |
| 4536 | last = prescan_version(s, FALSE, &errstr, &qv, &saw_decimal, &width, &alpha); |
| 4537 | if (errstr) { |
| 4538 | /* "undef" is a special case and not an error */ |
| 4539 | if ( ! ( *s == 'u' && strEQ(s,"undef")) ) { |
| 4540 | Perl_croak(aTHX_ "%s", errstr); |
| 4541 | } |
| 4542 | } |
| 4543 | |
| 4544 | start = s; |
| 4545 | if (*s == 'v') |
| 4546 | s++; |
| 4547 | pos = s; |
| 4548 | |
| 4549 | if ( qv ) |
| 4550 | (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(qv)); |
| 4551 | if ( alpha ) |
| 4552 | (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(alpha)); |
| 4553 | if ( !qv && width < 3 ) |
| 4554 | (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width)); |
| 4555 | |
| 4556 | while (isDIGIT(*pos)) |
| 4557 | pos++; |
| 4558 | if (!isALPHA(*pos)) { |
| 4559 | I32 rev; |
| 4560 | |
| 4561 | for (;;) { |
| 4562 | rev = 0; |
| 4563 | { |
| 4564 | /* this is atoi() that delimits on underscores */ |
| 4565 | const char *end = pos; |
| 4566 | I32 mult = 1; |
| 4567 | I32 orev; |
| 4568 | |
| 4569 | /* the following if() will only be true after the decimal |
| 4570 | * point of a version originally created with a bare |
| 4571 | * floating point number, i.e. not quoted in any way |
| 4572 | */ |
| 4573 | if ( !qv && s > start && saw_decimal == 1 ) { |
| 4574 | mult *= 100; |
| 4575 | while ( s < end ) { |
| 4576 | orev = rev; |
| 4577 | rev += (*s - '0') * mult; |
| 4578 | mult /= 10; |
| 4579 | if ( (PERL_ABS(orev) > PERL_ABS(rev)) |
| 4580 | || (PERL_ABS(rev) > VERSION_MAX )) { |
| 4581 | Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW), |
| 4582 | "Integer overflow in version %d",VERSION_MAX); |
| 4583 | s = end - 1; |
| 4584 | rev = VERSION_MAX; |
| 4585 | vinf = 1; |
| 4586 | } |
| 4587 | s++; |
| 4588 | if ( *s == '_' ) |
| 4589 | s++; |
| 4590 | } |
| 4591 | } |
| 4592 | else { |
| 4593 | while (--end >= s) { |
| 4594 | orev = rev; |
| 4595 | rev += (*end - '0') * mult; |
| 4596 | mult *= 10; |
| 4597 | if ( (PERL_ABS(orev) > PERL_ABS(rev)) |
| 4598 | || (PERL_ABS(rev) > VERSION_MAX )) { |
| 4599 | Perl_ck_warner(aTHX_ packWARN(WARN_OVERFLOW), |
| 4600 | "Integer overflow in version"); |
| 4601 | end = s - 1; |
| 4602 | rev = VERSION_MAX; |
| 4603 | vinf = 1; |
| 4604 | } |
| 4605 | } |
| 4606 | } |
| 4607 | } |
| 4608 | |
| 4609 | /* Append revision */ |
| 4610 | av_push(av, newSViv(rev)); |
| 4611 | if ( vinf ) { |
| 4612 | s = last; |
| 4613 | break; |
| 4614 | } |
| 4615 | else if ( *pos == '.' ) |
| 4616 | s = ++pos; |
| 4617 | else if ( *pos == '_' && isDIGIT(pos[1]) ) |
| 4618 | s = ++pos; |
| 4619 | else if ( *pos == ',' && isDIGIT(pos[1]) ) |
| 4620 | s = ++pos; |
| 4621 | else if ( isDIGIT(*pos) ) |
| 4622 | s = pos; |
| 4623 | else { |
| 4624 | s = pos; |
| 4625 | break; |
| 4626 | } |
| 4627 | if ( qv ) { |
| 4628 | while ( isDIGIT(*pos) ) |
| 4629 | pos++; |
| 4630 | } |
| 4631 | else { |
| 4632 | int digits = 0; |
| 4633 | while ( ( isDIGIT(*pos) || *pos == '_' ) && digits < 3 ) { |
| 4634 | if ( *pos != '_' ) |
| 4635 | digits++; |
| 4636 | pos++; |
| 4637 | } |
| 4638 | } |
| 4639 | } |
| 4640 | } |
| 4641 | if ( qv ) { /* quoted versions always get at least three terms*/ |
| 4642 | I32 len = av_len(av); |
| 4643 | /* This for loop appears to trigger a compiler bug on OS X, as it |
| 4644 | loops infinitely. Yes, len is negative. No, it makes no sense. |
| 4645 | Compiler in question is: |
| 4646 | gcc version 3.3 20030304 (Apple Computer, Inc. build 1640) |
| 4647 | for ( len = 2 - len; len > 0; len-- ) |
| 4648 | av_push(MUTABLE_AV(sv), newSViv(0)); |
| 4649 | */ |
| 4650 | len = 2 - len; |
| 4651 | while (len-- > 0) |
| 4652 | av_push(av, newSViv(0)); |
| 4653 | } |
| 4654 | |
| 4655 | /* need to save off the current version string for later */ |
| 4656 | if ( vinf ) { |
| 4657 | SV * orig = newSVpvn("v.Inf", sizeof("v.Inf")-1); |
| 4658 | (void)hv_stores(MUTABLE_HV(hv), "original", orig); |
| 4659 | (void)hv_stores(MUTABLE_HV(hv), "vinf", newSViv(1)); |
| 4660 | } |
| 4661 | else if ( s > start ) { |
| 4662 | SV * orig = newSVpvn(start,s-start); |
| 4663 | if ( qv && saw_decimal == 1 && *start != 'v' ) { |
| 4664 | /* need to insert a v to be consistent */ |
| 4665 | sv_insert(orig, 0, 0, "v", 1); |
| 4666 | } |
| 4667 | (void)hv_stores(MUTABLE_HV(hv), "original", orig); |
| 4668 | } |
| 4669 | else { |
| 4670 | (void)hv_stores(MUTABLE_HV(hv), "original", newSVpvs("0")); |
| 4671 | av_push(av, newSViv(0)); |
| 4672 | } |
| 4673 | |
| 4674 | /* And finally, store the AV in the hash */ |
| 4675 | (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av))); |
| 4676 | |
| 4677 | /* fix RT#19517 - special case 'undef' as string */ |
| 4678 | if ( *s == 'u' && strEQ(s,"undef") ) { |
| 4679 | s += 5; |
| 4680 | } |
| 4681 | |
| 4682 | return s; |
| 4683 | } |
| 4684 | |
| 4685 | /* |
| 4686 | =for apidoc new_version |
| 4687 | |
| 4688 | Returns a new version object based on the passed in SV: |
| 4689 | |
| 4690 | SV *sv = new_version(SV *ver); |
| 4691 | |
| 4692 | Does not alter the passed in ver SV. See "upg_version" if you |
| 4693 | want to upgrade the SV. |
| 4694 | |
| 4695 | =cut |
| 4696 | */ |
| 4697 | |
| 4698 | SV * |
| 4699 | Perl_new_version(pTHX_ SV *ver) |
| 4700 | { |
| 4701 | dVAR; |
| 4702 | SV * const rv = newSV(0); |
| 4703 | PERL_ARGS_ASSERT_NEW_VERSION; |
| 4704 | if ( sv_isobject(ver) && sv_derived_from(ver, "version") ) |
| 4705 | /* can just copy directly */ |
| 4706 | { |
| 4707 | I32 key; |
| 4708 | AV * const av = newAV(); |
| 4709 | AV *sav; |
| 4710 | /* This will get reblessed later if a derived class*/ |
| 4711 | SV * const hv = newSVrv(rv, "version"); |
| 4712 | (void)sv_upgrade(hv, SVt_PVHV); /* needs to be an HV type */ |
| 4713 | #ifndef NODEFAULT_SHAREKEYS |
| 4714 | HvSHAREKEYS_on(hv); /* key-sharing on by default */ |
| 4715 | #endif |
| 4716 | |
| 4717 | if ( SvROK(ver) ) |
| 4718 | ver = SvRV(ver); |
| 4719 | |
| 4720 | /* Begin copying all of the elements */ |
| 4721 | if ( hv_exists(MUTABLE_HV(ver), "qv", 2) ) |
| 4722 | (void)hv_stores(MUTABLE_HV(hv), "qv", newSViv(1)); |
| 4723 | |
| 4724 | if ( hv_exists(MUTABLE_HV(ver), "alpha", 5) ) |
| 4725 | (void)hv_stores(MUTABLE_HV(hv), "alpha", newSViv(1)); |
| 4726 | |
| 4727 | if ( hv_exists(MUTABLE_HV(ver), "width", 5 ) ) |
| 4728 | { |
| 4729 | const I32 width = SvIV(*hv_fetchs(MUTABLE_HV(ver), "width", FALSE)); |
| 4730 | (void)hv_stores(MUTABLE_HV(hv), "width", newSViv(width)); |
| 4731 | } |
| 4732 | |
| 4733 | if ( hv_exists(MUTABLE_HV(ver), "original", 8 ) ) |
| 4734 | { |
| 4735 | SV * pv = *hv_fetchs(MUTABLE_HV(ver), "original", FALSE); |
| 4736 | (void)hv_stores(MUTABLE_HV(hv), "original", newSVsv(pv)); |
| 4737 | } |
| 4738 | |
| 4739 | sav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(ver), "version", FALSE))); |
| 4740 | /* This will get reblessed later if a derived class*/ |
| 4741 | for ( key = 0; key <= av_len(sav); key++ ) |
| 4742 | { |
| 4743 | const I32 rev = SvIV(*av_fetch(sav, key, FALSE)); |
| 4744 | av_push(av, newSViv(rev)); |
| 4745 | } |
| 4746 | |
| 4747 | (void)hv_stores(MUTABLE_HV(hv), "version", newRV_noinc(MUTABLE_SV(av))); |
| 4748 | return rv; |
| 4749 | } |
| 4750 | #ifdef SvVOK |
| 4751 | { |
| 4752 | const MAGIC* const mg = SvVSTRING_mg(ver); |
| 4753 | if ( mg ) { /* already a v-string */ |
| 4754 | const STRLEN len = mg->mg_len; |
| 4755 | char * const version = savepvn( (const char*)mg->mg_ptr, len); |
| 4756 | sv_setpvn(rv,version,len); |
| 4757 | /* this is for consistency with the pure Perl class */ |
| 4758 | if ( isDIGIT(*version) ) |
| 4759 | sv_insert(rv, 0, 0, "v", 1); |
| 4760 | Safefree(version); |
| 4761 | } |
| 4762 | else { |
| 4763 | #endif |
| 4764 | sv_setsv(rv,ver); /* make a duplicate */ |
| 4765 | #ifdef SvVOK |
| 4766 | } |
| 4767 | } |
| 4768 | #endif |
| 4769 | return upg_version(rv, FALSE); |
| 4770 | } |
| 4771 | |
| 4772 | /* |
| 4773 | =for apidoc upg_version |
| 4774 | |
| 4775 | In-place upgrade of the supplied SV to a version object. |
| 4776 | |
| 4777 | SV *sv = upg_version(SV *sv, bool qv); |
| 4778 | |
| 4779 | Returns a pointer to the upgraded SV. Set the boolean qv if you want |
| 4780 | to force this SV to be interpreted as an "extended" version. |
| 4781 | |
| 4782 | =cut |
| 4783 | */ |
| 4784 | |
| 4785 | SV * |
| 4786 | Perl_upg_version(pTHX_ SV *ver, bool qv) |
| 4787 | { |
| 4788 | const char *version, *s; |
| 4789 | #ifdef SvVOK |
| 4790 | const MAGIC *mg; |
| 4791 | #endif |
| 4792 | |
| 4793 | PERL_ARGS_ASSERT_UPG_VERSION; |
| 4794 | |
| 4795 | if ( SvNOK(ver) && !( SvPOK(ver) && sv_len(ver) == 3 ) ) |
| 4796 | { |
| 4797 | STRLEN len; |
| 4798 | |
| 4799 | /* may get too much accuracy */ |
| 4800 | char tbuf[64]; |
| 4801 | SV *sv = SvNVX(ver) > 10e50 ? newSV(64) : 0; |
| 4802 | char *buf; |
| 4803 | #ifdef USE_LOCALE_NUMERIC |
| 4804 | char *loc = savepv(setlocale(LC_NUMERIC, NULL)); |
| 4805 | setlocale(LC_NUMERIC, "C"); |
| 4806 | #endif |
| 4807 | if (sv) { |
| 4808 | Perl_sv_setpvf(aTHX_ sv, "%.9"NVff, SvNVX(ver)); |
| 4809 | buf = SvPV(sv, len); |
| 4810 | } |
| 4811 | else { |
| 4812 | len = my_snprintf(tbuf, sizeof(tbuf), "%.9"NVff, SvNVX(ver)); |
| 4813 | buf = tbuf; |
| 4814 | } |
| 4815 | #ifdef USE_LOCALE_NUMERIC |
| 4816 | setlocale(LC_NUMERIC, loc); |
| 4817 | Safefree(loc); |
| 4818 | #endif |
| 4819 | while (buf[len-1] == '0' && len > 0) len--; |
| 4820 | if ( buf[len-1] == '.' ) len--; /* eat the trailing decimal */ |
| 4821 | version = savepvn(buf, len); |
| 4822 | SvREFCNT_dec(sv); |
| 4823 | } |
| 4824 | #ifdef SvVOK |
| 4825 | else if ( (mg = SvVSTRING_mg(ver)) ) { /* already a v-string */ |
| 4826 | version = savepvn( (const char*)mg->mg_ptr,mg->mg_len ); |
| 4827 | qv = TRUE; |
| 4828 | } |
| 4829 | #endif |
| 4830 | else /* must be a string or something like a string */ |
| 4831 | { |
| 4832 | STRLEN len; |
| 4833 | version = savepv(SvPV(ver,len)); |
| 4834 | #ifndef SvVOK |
| 4835 | # if PERL_VERSION > 5 |
| 4836 | /* This will only be executed for 5.6.0 - 5.8.0 inclusive */ |
| 4837 | if ( len >= 3 && !instr(version,".") && !instr(version,"_")) { |
| 4838 | /* may be a v-string */ |
| 4839 | char *testv = (char *)version; |
| 4840 | STRLEN tlen = len; |
| 4841 | for (tlen=0; tlen < len; tlen++, testv++) { |
| 4842 | /* if one of the characters is non-text assume v-string */ |
| 4843 | if (testv[0] < ' ') { |
| 4844 | SV * const nsv = sv_newmortal(); |
| 4845 | const char *nver; |
| 4846 | const char *pos; |
| 4847 | int saw_decimal = 0; |
| 4848 | sv_setpvf(nsv,"v%vd",ver); |
| 4849 | pos = nver = savepv(SvPV_nolen(nsv)); |
| 4850 | |
| 4851 | /* scan the resulting formatted string */ |
| 4852 | pos++; /* skip the leading 'v' */ |
| 4853 | while ( *pos == '.' || isDIGIT(*pos) ) { |
| 4854 | if ( *pos == '.' ) |
| 4855 | saw_decimal++ ; |
| 4856 | pos++; |
| 4857 | } |
| 4858 | |
| 4859 | /* is definitely a v-string */ |
| 4860 | if ( saw_decimal >= 2 ) { |
| 4861 | Safefree(version); |
| 4862 | version = nver; |
| 4863 | } |
| 4864 | break; |
| 4865 | } |
| 4866 | } |
| 4867 | } |
| 4868 | # endif |
| 4869 | #endif |
| 4870 | } |
| 4871 | |
| 4872 | s = scan_version(version, ver, qv); |
| 4873 | if ( *s != '\0' ) |
| 4874 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
| 4875 | "Version string '%s' contains invalid data; " |
| 4876 | "ignoring: '%s'", version, s); |
| 4877 | Safefree(version); |
| 4878 | return ver; |
| 4879 | } |
| 4880 | |
| 4881 | /* |
| 4882 | =for apidoc vverify |
| 4883 | |
| 4884 | Validates that the SV contains valid internal structure for a version object. |
| 4885 | It may be passed either the version object (RV) or the hash itself (HV). If |
| 4886 | the structure is valid, it returns the HV. If the structure is invalid, |
| 4887 | it returns NULL. |
| 4888 | |
| 4889 | SV *hv = vverify(sv); |
| 4890 | |
| 4891 | Note that it only confirms the bare minimum structure (so as not to get |
| 4892 | confused by derived classes which may contain additional hash entries): |
| 4893 | |
| 4894 | =over 4 |
| 4895 | |
| 4896 | =item * The SV is an HV or a reference to an HV |
| 4897 | |
| 4898 | =item * The hash contains a "version" key |
| 4899 | |
| 4900 | =item * The "version" key has a reference to an AV as its value |
| 4901 | |
| 4902 | =back |
| 4903 | |
| 4904 | =cut |
| 4905 | */ |
| 4906 | |
| 4907 | SV * |
| 4908 | Perl_vverify(pTHX_ SV *vs) |
| 4909 | { |
| 4910 | SV *sv; |
| 4911 | |
| 4912 | PERL_ARGS_ASSERT_VVERIFY; |
| 4913 | |
| 4914 | if ( SvROK(vs) ) |
| 4915 | vs = SvRV(vs); |
| 4916 | |
| 4917 | /* see if the appropriate elements exist */ |
| 4918 | if ( SvTYPE(vs) == SVt_PVHV |
| 4919 | && hv_exists(MUTABLE_HV(vs), "version", 7) |
| 4920 | && (sv = SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) |
| 4921 | && SvTYPE(sv) == SVt_PVAV ) |
| 4922 | return vs; |
| 4923 | else |
| 4924 | return NULL; |
| 4925 | } |
| 4926 | |
| 4927 | /* |
| 4928 | =for apidoc vnumify |
| 4929 | |
| 4930 | Accepts a version object and returns the normalized floating |
| 4931 | point representation. Call like: |
| 4932 | |
| 4933 | sv = vnumify(rv); |
| 4934 | |
| 4935 | NOTE: you can pass either the object directly or the SV |
| 4936 | contained within the RV. |
| 4937 | |
| 4938 | The SV returned has a refcount of 1. |
| 4939 | |
| 4940 | =cut |
| 4941 | */ |
| 4942 | |
| 4943 | SV * |
| 4944 | Perl_vnumify(pTHX_ SV *vs) |
| 4945 | { |
| 4946 | I32 i, len, digit; |
| 4947 | int width; |
| 4948 | bool alpha = FALSE; |
| 4949 | SV *sv; |
| 4950 | AV *av; |
| 4951 | |
| 4952 | PERL_ARGS_ASSERT_VNUMIFY; |
| 4953 | |
| 4954 | /* extract the HV from the object */ |
| 4955 | vs = vverify(vs); |
| 4956 | if ( ! vs ) |
| 4957 | Perl_croak(aTHX_ "Invalid version object"); |
| 4958 | |
| 4959 | /* see if various flags exist */ |
| 4960 | if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) ) |
| 4961 | alpha = TRUE; |
| 4962 | if ( hv_exists(MUTABLE_HV(vs), "width", 5 ) ) |
| 4963 | width = SvIV(*hv_fetchs(MUTABLE_HV(vs), "width", FALSE)); |
| 4964 | else |
| 4965 | width = 3; |
| 4966 | |
| 4967 | |
| 4968 | /* attempt to retrieve the version array */ |
| 4969 | if ( !(av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))) ) ) { |
| 4970 | return newSVpvs("0"); |
| 4971 | } |
| 4972 | |
| 4973 | len = av_len(av); |
| 4974 | if ( len == -1 ) |
| 4975 | { |
| 4976 | return newSVpvs("0"); |
| 4977 | } |
| 4978 | |
| 4979 | digit = SvIV(*av_fetch(av, 0, 0)); |
| 4980 | sv = Perl_newSVpvf(aTHX_ "%d.", (int)PERL_ABS(digit)); |
| 4981 | for ( i = 1 ; i < len ; i++ ) |
| 4982 | { |
| 4983 | digit = SvIV(*av_fetch(av, i, 0)); |
| 4984 | if ( width < 3 ) { |
| 4985 | const int denom = (width == 2 ? 10 : 100); |
| 4986 | const div_t term = div((int)PERL_ABS(digit),denom); |
| 4987 | Perl_sv_catpvf(aTHX_ sv, "%0*d_%d", width, term.quot, term.rem); |
| 4988 | } |
| 4989 | else { |
| 4990 | Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); |
| 4991 | } |
| 4992 | } |
| 4993 | |
| 4994 | if ( len > 0 ) |
| 4995 | { |
| 4996 | digit = SvIV(*av_fetch(av, len, 0)); |
| 4997 | if ( alpha && width == 3 ) /* alpha version */ |
| 4998 | sv_catpvs(sv,"_"); |
| 4999 | Perl_sv_catpvf(aTHX_ sv, "%0*d", width, (int)digit); |
| 5000 | } |
| 5001 | else /* len == 0 */ |
| 5002 | { |
| 5003 | sv_catpvs(sv, "000"); |
| 5004 | } |
| 5005 | return sv; |
| 5006 | } |
| 5007 | |
| 5008 | /* |
| 5009 | =for apidoc vnormal |
| 5010 | |
| 5011 | Accepts a version object and returns the normalized string |
| 5012 | representation. Call like: |
| 5013 | |
| 5014 | sv = vnormal(rv); |
| 5015 | |
| 5016 | NOTE: you can pass either the object directly or the SV |
| 5017 | contained within the RV. |
| 5018 | |
| 5019 | The SV returned has a refcount of 1. |
| 5020 | |
| 5021 | =cut |
| 5022 | */ |
| 5023 | |
| 5024 | SV * |
| 5025 | Perl_vnormal(pTHX_ SV *vs) |
| 5026 | { |
| 5027 | I32 i, len, digit; |
| 5028 | bool alpha = FALSE; |
| 5029 | SV *sv; |
| 5030 | AV *av; |
| 5031 | |
| 5032 | PERL_ARGS_ASSERT_VNORMAL; |
| 5033 | |
| 5034 | /* extract the HV from the object */ |
| 5035 | vs = vverify(vs); |
| 5036 | if ( ! vs ) |
| 5037 | Perl_croak(aTHX_ "Invalid version object"); |
| 5038 | |
| 5039 | if ( hv_exists(MUTABLE_HV(vs), "alpha", 5 ) ) |
| 5040 | alpha = TRUE; |
| 5041 | av = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(vs), "version", FALSE))); |
| 5042 | |
| 5043 | len = av_len(av); |
| 5044 | if ( len == -1 ) |
| 5045 | { |
| 5046 | return newSVpvs(""); |
| 5047 | } |
| 5048 | digit = SvIV(*av_fetch(av, 0, 0)); |
| 5049 | sv = Perl_newSVpvf(aTHX_ "v%"IVdf, (IV)digit); |
| 5050 | for ( i = 1 ; i < len ; i++ ) { |
| 5051 | digit = SvIV(*av_fetch(av, i, 0)); |
| 5052 | Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit); |
| 5053 | } |
| 5054 | |
| 5055 | if ( len > 0 ) |
| 5056 | { |
| 5057 | /* handle last digit specially */ |
| 5058 | digit = SvIV(*av_fetch(av, len, 0)); |
| 5059 | if ( alpha ) |
| 5060 | Perl_sv_catpvf(aTHX_ sv, "_%"IVdf, (IV)digit); |
| 5061 | else |
| 5062 | Perl_sv_catpvf(aTHX_ sv, ".%"IVdf, (IV)digit); |
| 5063 | } |
| 5064 | |
| 5065 | if ( len <= 2 ) { /* short version, must be at least three */ |
| 5066 | for ( len = 2 - len; len != 0; len-- ) |
| 5067 | sv_catpvs(sv,".0"); |
| 5068 | } |
| 5069 | return sv; |
| 5070 | } |
| 5071 | |
| 5072 | /* |
| 5073 | =for apidoc vstringify |
| 5074 | |
| 5075 | In order to maintain maximum compatibility with earlier versions |
| 5076 | of Perl, this function will return either the floating point |
| 5077 | notation or the multiple dotted notation, depending on whether |
| 5078 | the original version contained 1 or more dots, respectively. |
| 5079 | |
| 5080 | The SV returned has a refcount of 1. |
| 5081 | |
| 5082 | =cut |
| 5083 | */ |
| 5084 | |
| 5085 | SV * |
| 5086 | Perl_vstringify(pTHX_ SV *vs) |
| 5087 | { |
| 5088 | PERL_ARGS_ASSERT_VSTRINGIFY; |
| 5089 | |
| 5090 | /* extract the HV from the object */ |
| 5091 | vs = vverify(vs); |
| 5092 | if ( ! vs ) |
| 5093 | Perl_croak(aTHX_ "Invalid version object"); |
| 5094 | |
| 5095 | if (hv_exists(MUTABLE_HV(vs), "original", sizeof("original") - 1)) { |
| 5096 | SV *pv; |
| 5097 | pv = *hv_fetchs(MUTABLE_HV(vs), "original", FALSE); |
| 5098 | if ( SvPOK(pv) ) |
| 5099 | return newSVsv(pv); |
| 5100 | else |
| 5101 | return &PL_sv_undef; |
| 5102 | } |
| 5103 | else { |
| 5104 | if ( hv_exists(MUTABLE_HV(vs), "qv", 2) ) |
| 5105 | return vnormal(vs); |
| 5106 | else |
| 5107 | return vnumify(vs); |
| 5108 | } |
| 5109 | } |
| 5110 | |
| 5111 | /* |
| 5112 | =for apidoc vcmp |
| 5113 | |
| 5114 | Version object aware cmp. Both operands must already have been |
| 5115 | converted into version objects. |
| 5116 | |
| 5117 | =cut |
| 5118 | */ |
| 5119 | |
| 5120 | int |
| 5121 | Perl_vcmp(pTHX_ SV *lhv, SV *rhv) |
| 5122 | { |
| 5123 | I32 i,l,m,r,retval; |
| 5124 | bool lalpha = FALSE; |
| 5125 | bool ralpha = FALSE; |
| 5126 | I32 left = 0; |
| 5127 | I32 right = 0; |
| 5128 | AV *lav, *rav; |
| 5129 | |
| 5130 | PERL_ARGS_ASSERT_VCMP; |
| 5131 | |
| 5132 | /* extract the HVs from the objects */ |
| 5133 | lhv = vverify(lhv); |
| 5134 | rhv = vverify(rhv); |
| 5135 | if ( ! ( lhv && rhv ) ) |
| 5136 | Perl_croak(aTHX_ "Invalid version object"); |
| 5137 | |
| 5138 | /* get the left hand term */ |
| 5139 | lav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(lhv), "version", FALSE))); |
| 5140 | if ( hv_exists(MUTABLE_HV(lhv), "alpha", 5 ) ) |
| 5141 | lalpha = TRUE; |
| 5142 | |
| 5143 | /* and the right hand term */ |
| 5144 | rav = MUTABLE_AV(SvRV(*hv_fetchs(MUTABLE_HV(rhv), "version", FALSE))); |
| 5145 | if ( hv_exists(MUTABLE_HV(rhv), "alpha", 5 ) ) |
| 5146 | ralpha = TRUE; |
| 5147 | |
| 5148 | l = av_len(lav); |
| 5149 | r = av_len(rav); |
| 5150 | m = l < r ? l : r; |
| 5151 | retval = 0; |
| 5152 | i = 0; |
| 5153 | while ( i <= m && retval == 0 ) |
| 5154 | { |
| 5155 | left = SvIV(*av_fetch(lav,i,0)); |
| 5156 | right = SvIV(*av_fetch(rav,i,0)); |
| 5157 | if ( left < right ) |
| 5158 | retval = -1; |
| 5159 | if ( left > right ) |
| 5160 | retval = +1; |
| 5161 | i++; |
| 5162 | } |
| 5163 | |
| 5164 | /* tiebreaker for alpha with identical terms */ |
| 5165 | if ( retval == 0 && l == r && left == right && ( lalpha || ralpha ) ) |
| 5166 | { |
| 5167 | if ( lalpha && !ralpha ) |
| 5168 | { |
| 5169 | retval = -1; |
| 5170 | } |
| 5171 | else if ( ralpha && !lalpha) |
| 5172 | { |
| 5173 | retval = +1; |
| 5174 | } |
| 5175 | } |
| 5176 | |
| 5177 | if ( l != r && retval == 0 ) /* possible match except for trailing 0's */ |
| 5178 | { |
| 5179 | if ( l < r ) |
| 5180 | { |
| 5181 | while ( i <= r && retval == 0 ) |
| 5182 | { |
| 5183 | if ( SvIV(*av_fetch(rav,i,0)) != 0 ) |
| 5184 | retval = -1; /* not a match after all */ |
| 5185 | i++; |
| 5186 | } |
| 5187 | } |
| 5188 | else |
| 5189 | { |
| 5190 | while ( i <= l && retval == 0 ) |
| 5191 | { |
| 5192 | if ( SvIV(*av_fetch(lav,i,0)) != 0 ) |
| 5193 | retval = +1; /* not a match after all */ |
| 5194 | i++; |
| 5195 | } |
| 5196 | } |
| 5197 | } |
| 5198 | return retval; |
| 5199 | } |
| 5200 | |
| 5201 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) && defined(SOCK_DGRAM) && defined(HAS_SELECT) |
| 5202 | # define EMULATE_SOCKETPAIR_UDP |
| 5203 | #endif |
| 5204 | |
| 5205 | #ifdef EMULATE_SOCKETPAIR_UDP |
| 5206 | static int |
| 5207 | S_socketpair_udp (int fd[2]) { |
| 5208 | dTHX; |
| 5209 | /* Fake a datagram socketpair using UDP to localhost. */ |
| 5210 | int sockets[2] = {-1, -1}; |
| 5211 | struct sockaddr_in addresses[2]; |
| 5212 | int i; |
| 5213 | Sock_size_t size = sizeof(struct sockaddr_in); |
| 5214 | unsigned short port; |
| 5215 | int got; |
| 5216 | |
| 5217 | memset(&addresses, 0, sizeof(addresses)); |
| 5218 | i = 1; |
| 5219 | do { |
| 5220 | sockets[i] = PerlSock_socket(AF_INET, SOCK_DGRAM, PF_INET); |
| 5221 | if (sockets[i] == -1) |
| 5222 | goto tidy_up_and_fail; |
| 5223 | |
| 5224 | addresses[i].sin_family = AF_INET; |
| 5225 | addresses[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
| 5226 | addresses[i].sin_port = 0; /* kernel choses port. */ |
| 5227 | if (PerlSock_bind(sockets[i], (struct sockaddr *) &addresses[i], |
| 5228 | sizeof(struct sockaddr_in)) == -1) |
| 5229 | goto tidy_up_and_fail; |
| 5230 | } while (i--); |
| 5231 | |
| 5232 | /* Now have 2 UDP sockets. Find out which port each is connected to, and |
| 5233 | for each connect the other socket to it. */ |
| 5234 | i = 1; |
| 5235 | do { |
| 5236 | if (PerlSock_getsockname(sockets[i], (struct sockaddr *) &addresses[i], |
| 5237 | &size) == -1) |
| 5238 | goto tidy_up_and_fail; |
| 5239 | if (size != sizeof(struct sockaddr_in)) |
| 5240 | goto abort_tidy_up_and_fail; |
| 5241 | /* !1 is 0, !0 is 1 */ |
| 5242 | if (PerlSock_connect(sockets[!i], (struct sockaddr *) &addresses[i], |
| 5243 | sizeof(struct sockaddr_in)) == -1) |
| 5244 | goto tidy_up_and_fail; |
| 5245 | } while (i--); |
| 5246 | |
| 5247 | /* Now we have 2 sockets connected to each other. I don't trust some other |
| 5248 | process not to have already sent a packet to us (by random) so send |
| 5249 | a packet from each to the other. */ |
| 5250 | i = 1; |
| 5251 | do { |
| 5252 | /* I'm going to send my own port number. As a short. |
| 5253 | (Who knows if someone somewhere has sin_port as a bitfield and needs |
| 5254 | this routine. (I'm assuming crays have socketpair)) */ |
| 5255 | port = addresses[i].sin_port; |
| 5256 | got = PerlLIO_write(sockets[i], &port, sizeof(port)); |
| 5257 | if (got != sizeof(port)) { |
| 5258 | if (got == -1) |
| 5259 | goto tidy_up_and_fail; |
| 5260 | goto abort_tidy_up_and_fail; |
| 5261 | } |
| 5262 | } while (i--); |
| 5263 | |
| 5264 | /* Packets sent. I don't trust them to have arrived though. |
| 5265 | (As I understand it Solaris TCP stack is multithreaded. Non-blocking |
| 5266 | connect to localhost will use a second kernel thread. In 2.6 the |
| 5267 | first thread running the connect() returns before the second completes, |
| 5268 | so EINPROGRESS> In 2.7 the improved stack is faster and connect() |
| 5269 | returns 0. Poor programs have tripped up. One poor program's authors' |
| 5270 | had a 50-1 reverse stock split. Not sure how connected these were.) |
| 5271 | So I don't trust someone not to have an unpredictable UDP stack. |
| 5272 | */ |
| 5273 | |
| 5274 | { |
| 5275 | struct timeval waitfor = {0, 100000}; /* You have 0.1 seconds */ |
| 5276 | int max = sockets[1] > sockets[0] ? sockets[1] : sockets[0]; |
| 5277 | fd_set rset; |
| 5278 | |
| 5279 | FD_ZERO(&rset); |
| 5280 | FD_SET((unsigned int)sockets[0], &rset); |
| 5281 | FD_SET((unsigned int)sockets[1], &rset); |
| 5282 | |
| 5283 | got = PerlSock_select(max + 1, &rset, NULL, NULL, &waitfor); |
| 5284 | if (got != 2 || !FD_ISSET(sockets[0], &rset) |
| 5285 | || !FD_ISSET(sockets[1], &rset)) { |
| 5286 | /* I hope this is portable and appropriate. */ |
| 5287 | if (got == -1) |
| 5288 | goto tidy_up_and_fail; |
| 5289 | goto abort_tidy_up_and_fail; |
| 5290 | } |
| 5291 | } |
| 5292 | |
| 5293 | /* And the paranoia department even now doesn't trust it to have arrive |
| 5294 | (hence MSG_DONTWAIT). Or that what arrives was sent by us. */ |
| 5295 | { |
| 5296 | struct sockaddr_in readfrom; |
| 5297 | unsigned short buffer[2]; |
| 5298 | |
| 5299 | i = 1; |
| 5300 | do { |
| 5301 | #ifdef MSG_DONTWAIT |
| 5302 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
| 5303 | sizeof(buffer), MSG_DONTWAIT, |
| 5304 | (struct sockaddr *) &readfrom, &size); |
| 5305 | #else |
| 5306 | got = PerlSock_recvfrom(sockets[i], (char *) &buffer, |
| 5307 | sizeof(buffer), 0, |
| 5308 | (struct sockaddr *) &readfrom, &size); |
| 5309 | #endif |
| 5310 | |
| 5311 | if (got == -1) |
| 5312 | goto tidy_up_and_fail; |
| 5313 | if (got != sizeof(port) |
| 5314 | || size != sizeof(struct sockaddr_in) |
| 5315 | /* Check other socket sent us its port. */ |
| 5316 | || buffer[0] != (unsigned short) addresses[!i].sin_port |
| 5317 | /* Check kernel says we got the datagram from that socket */ |
| 5318 | || readfrom.sin_family != addresses[!i].sin_family |
| 5319 | || readfrom.sin_addr.s_addr != addresses[!i].sin_addr.s_addr |
| 5320 | || readfrom.sin_port != addresses[!i].sin_port) |
| 5321 | goto abort_tidy_up_and_fail; |
| 5322 | } while (i--); |
| 5323 | } |
| 5324 | /* My caller (my_socketpair) has validated that this is non-NULL */ |
| 5325 | fd[0] = sockets[0]; |
| 5326 | fd[1] = sockets[1]; |
| 5327 | /* I hereby declare this connection open. May God bless all who cross |
| 5328 | her. */ |
| 5329 | return 0; |
| 5330 | |
| 5331 | abort_tidy_up_and_fail: |
| 5332 | errno = ECONNABORTED; |
| 5333 | tidy_up_and_fail: |
| 5334 | { |
| 5335 | dSAVE_ERRNO; |
| 5336 | if (sockets[0] != -1) |
| 5337 | PerlLIO_close(sockets[0]); |
| 5338 | if (sockets[1] != -1) |
| 5339 | PerlLIO_close(sockets[1]); |
| 5340 | RESTORE_ERRNO; |
| 5341 | return -1; |
| 5342 | } |
| 5343 | } |
| 5344 | #endif /* EMULATE_SOCKETPAIR_UDP */ |
| 5345 | |
| 5346 | #if !defined(HAS_SOCKETPAIR) && defined(HAS_SOCKET) && defined(AF_INET) && defined(PF_INET) |
| 5347 | int |
| 5348 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { |
| 5349 | /* Stevens says that family must be AF_LOCAL, protocol 0. |
| 5350 | I'm going to enforce that, then ignore it, and use TCP (or UDP). */ |
| 5351 | dTHXa(NULL); |
| 5352 | int listener = -1; |
| 5353 | int connector = -1; |
| 5354 | int acceptor = -1; |
| 5355 | struct sockaddr_in listen_addr; |
| 5356 | struct sockaddr_in connect_addr; |
| 5357 | Sock_size_t size; |
| 5358 | |
| 5359 | if (protocol |
| 5360 | #ifdef AF_UNIX |
| 5361 | || family != AF_UNIX |
| 5362 | #endif |
| 5363 | ) { |
| 5364 | errno = EAFNOSUPPORT; |
| 5365 | return -1; |
| 5366 | } |
| 5367 | if (!fd) { |
| 5368 | errno = EINVAL; |
| 5369 | return -1; |
| 5370 | } |
| 5371 | |
| 5372 | #ifdef EMULATE_SOCKETPAIR_UDP |
| 5373 | if (type == SOCK_DGRAM) |
| 5374 | return S_socketpair_udp(fd); |
| 5375 | #endif |
| 5376 | |
| 5377 | aTHXa(PERL_GET_THX); |
| 5378 | listener = PerlSock_socket(AF_INET, type, 0); |
| 5379 | if (listener == -1) |
| 5380 | return -1; |
| 5381 | memset(&listen_addr, 0, sizeof(listen_addr)); |
| 5382 | listen_addr.sin_family = AF_INET; |
| 5383 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); |
| 5384 | listen_addr.sin_port = 0; /* kernel choses port. */ |
| 5385 | if (PerlSock_bind(listener, (struct sockaddr *) &listen_addr, |
| 5386 | sizeof(listen_addr)) == -1) |
| 5387 | goto tidy_up_and_fail; |
| 5388 | if (PerlSock_listen(listener, 1) == -1) |
| 5389 | goto tidy_up_and_fail; |
| 5390 | |
| 5391 | connector = PerlSock_socket(AF_INET, type, 0); |
| 5392 | if (connector == -1) |
| 5393 | goto tidy_up_and_fail; |
| 5394 | /* We want to find out the port number to connect to. */ |
| 5395 | size = sizeof(connect_addr); |
| 5396 | if (PerlSock_getsockname(listener, (struct sockaddr *) &connect_addr, |
| 5397 | &size) == -1) |
| 5398 | goto tidy_up_and_fail; |
| 5399 | if (size != sizeof(connect_addr)) |
| 5400 | goto abort_tidy_up_and_fail; |
| 5401 | if (PerlSock_connect(connector, (struct sockaddr *) &connect_addr, |
| 5402 | sizeof(connect_addr)) == -1) |
| 5403 | goto tidy_up_and_fail; |
| 5404 | |
| 5405 | size = sizeof(listen_addr); |
| 5406 | acceptor = PerlSock_accept(listener, (struct sockaddr *) &listen_addr, |
| 5407 | &size); |
| 5408 | if (acceptor == -1) |
| 5409 | goto tidy_up_and_fail; |
| 5410 | if (size != sizeof(listen_addr)) |
| 5411 | goto abort_tidy_up_and_fail; |
| 5412 | PerlLIO_close(listener); |
| 5413 | /* Now check we are talking to ourself by matching port and host on the |
| 5414 | two sockets. */ |
| 5415 | if (PerlSock_getsockname(connector, (struct sockaddr *) &connect_addr, |
| 5416 | &size) == -1) |
| 5417 | goto tidy_up_and_fail; |
| 5418 | if (size != sizeof(connect_addr) |
| 5419 | || listen_addr.sin_family != connect_addr.sin_family |
| 5420 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr |
| 5421 | || listen_addr.sin_port != connect_addr.sin_port) { |
| 5422 | goto abort_tidy_up_and_fail; |
| 5423 | } |
| 5424 | fd[0] = connector; |
| 5425 | fd[1] = acceptor; |
| 5426 | return 0; |
| 5427 | |
| 5428 | abort_tidy_up_and_fail: |
| 5429 | #ifdef ECONNABORTED |
| 5430 | errno = ECONNABORTED; /* This would be the standard thing to do. */ |
| 5431 | #else |
| 5432 | # ifdef ECONNREFUSED |
| 5433 | errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */ |
| 5434 | # else |
| 5435 | errno = ETIMEDOUT; /* Desperation time. */ |
| 5436 | # endif |
| 5437 | #endif |
| 5438 | tidy_up_and_fail: |
| 5439 | { |
| 5440 | dSAVE_ERRNO; |
| 5441 | if (listener != -1) |
| 5442 | PerlLIO_close(listener); |
| 5443 | if (connector != -1) |
| 5444 | PerlLIO_close(connector); |
| 5445 | if (acceptor != -1) |
| 5446 | PerlLIO_close(acceptor); |
| 5447 | RESTORE_ERRNO; |
| 5448 | return -1; |
| 5449 | } |
| 5450 | } |
| 5451 | #else |
| 5452 | /* In any case have a stub so that there's code corresponding |
| 5453 | * to the my_socketpair in embed.fnc. */ |
| 5454 | int |
| 5455 | Perl_my_socketpair (int family, int type, int protocol, int fd[2]) { |
| 5456 | #ifdef HAS_SOCKETPAIR |
| 5457 | return socketpair(family, type, protocol, fd); |
| 5458 | #else |
| 5459 | return -1; |
| 5460 | #endif |
| 5461 | } |
| 5462 | #endif |
| 5463 | |
| 5464 | /* |
| 5465 | |
| 5466 | =for apidoc sv_nosharing |
| 5467 | |
| 5468 | Dummy routine which "shares" an SV when there is no sharing module present. |
| 5469 | Or "locks" it. Or "unlocks" it. In other words, ignores its single SV argument. |
| 5470 | Exists to avoid test for a NULL function pointer and because it could |
| 5471 | potentially warn under some level of strict-ness. |
| 5472 | |
| 5473 | =cut |
| 5474 | */ |
| 5475 | |
| 5476 | void |
| 5477 | Perl_sv_nosharing(pTHX_ SV *sv) |
| 5478 | { |
| 5479 | PERL_UNUSED_CONTEXT; |
| 5480 | PERL_UNUSED_ARG(sv); |
| 5481 | } |
| 5482 | |
| 5483 | /* |
| 5484 | |
| 5485 | =for apidoc sv_destroyable |
| 5486 | |
| 5487 | Dummy routine which reports that object can be destroyed when there is no |
| 5488 | sharing module present. It ignores its single SV argument, and returns |
| 5489 | 'true'. Exists to avoid test for a NULL function pointer and because it |
| 5490 | could potentially warn under some level of strict-ness. |
| 5491 | |
| 5492 | =cut |
| 5493 | */ |
| 5494 | |
| 5495 | bool |
| 5496 | Perl_sv_destroyable(pTHX_ SV *sv) |
| 5497 | { |
| 5498 | PERL_UNUSED_CONTEXT; |
| 5499 | PERL_UNUSED_ARG(sv); |
| 5500 | return TRUE; |
| 5501 | } |
| 5502 | |
| 5503 | U32 |
| 5504 | Perl_parse_unicode_opts(pTHX_ const char **popt) |
| 5505 | { |
| 5506 | const char *p = *popt; |
| 5507 | U32 opt = 0; |
| 5508 | |
| 5509 | PERL_ARGS_ASSERT_PARSE_UNICODE_OPTS; |
| 5510 | |
| 5511 | if (*p) { |
| 5512 | if (isDIGIT(*p)) { |
| 5513 | opt = (U32) atoi(p); |
| 5514 | while (isDIGIT(*p)) |
| 5515 | p++; |
| 5516 | if (*p && *p != '\n' && *p != '\r') { |
| 5517 | if(isSPACE(*p)) goto the_end_of_the_opts_parser; |
| 5518 | else |
| 5519 | Perl_croak(aTHX_ "Unknown Unicode option letter '%c'", *p); |
| 5520 | } |
| 5521 | } |
| 5522 | else { |
| 5523 | for (; *p; p++) { |
| 5524 | switch (*p) { |
| 5525 | case PERL_UNICODE_STDIN: |
| 5526 | opt |= PERL_UNICODE_STDIN_FLAG; break; |
| 5527 | case PERL_UNICODE_STDOUT: |
| 5528 | opt |= PERL_UNICODE_STDOUT_FLAG; break; |
| 5529 | case PERL_UNICODE_STDERR: |
| 5530 | opt |= PERL_UNICODE_STDERR_FLAG; break; |
| 5531 | case PERL_UNICODE_STD: |
| 5532 | opt |= PERL_UNICODE_STD_FLAG; break; |
| 5533 | case PERL_UNICODE_IN: |
| 5534 | opt |= PERL_UNICODE_IN_FLAG; break; |
| 5535 | case PERL_UNICODE_OUT: |
| 5536 | opt |= PERL_UNICODE_OUT_FLAG; break; |
| 5537 | case PERL_UNICODE_INOUT: |
| 5538 | opt |= PERL_UNICODE_INOUT_FLAG; break; |
| 5539 | case PERL_UNICODE_LOCALE: |
| 5540 | opt |= PERL_UNICODE_LOCALE_FLAG; break; |
| 5541 | case PERL_UNICODE_ARGV: |
| 5542 | opt |= PERL_UNICODE_ARGV_FLAG; break; |
| 5543 | case PERL_UNICODE_UTF8CACHEASSERT: |
| 5544 | opt |= PERL_UNICODE_UTF8CACHEASSERT_FLAG; break; |
| 5545 | default: |
| 5546 | if (*p != '\n' && *p != '\r') { |
| 5547 | if(isSPACE(*p)) goto the_end_of_the_opts_parser; |
| 5548 | else |
| 5549 | Perl_croak(aTHX_ |
| 5550 | "Unknown Unicode option letter '%c'", *p); |
| 5551 | } |
| 5552 | } |
| 5553 | } |
| 5554 | } |
| 5555 | } |
| 5556 | else |
| 5557 | opt = PERL_UNICODE_DEFAULT_FLAGS; |
| 5558 | |
| 5559 | the_end_of_the_opts_parser: |
| 5560 | |
| 5561 | if (opt & ~PERL_UNICODE_ALL_FLAGS) |
| 5562 | Perl_croak(aTHX_ "Unknown Unicode option value %"UVuf, |
| 5563 | (UV) (opt & ~PERL_UNICODE_ALL_FLAGS)); |
| 5564 | |
| 5565 | *popt = p; |
| 5566 | |
| 5567 | return opt; |
| 5568 | } |
| 5569 | |
| 5570 | #ifdef VMS |
| 5571 | # include <starlet.h> |
| 5572 | #endif |
| 5573 | |
| 5574 | U32 |
| 5575 | Perl_seed(pTHX) |
| 5576 | { |
| 5577 | dVAR; |
| 5578 | /* |
| 5579 | * This is really just a quick hack which grabs various garbage |
| 5580 | * values. It really should be a real hash algorithm which |
| 5581 | * spreads the effect of every input bit onto every output bit, |
| 5582 | * if someone who knows about such things would bother to write it. |
| 5583 | * Might be a good idea to add that function to CORE as well. |
| 5584 | * No numbers below come from careful analysis or anything here, |
| 5585 | * except they are primes and SEED_C1 > 1E6 to get a full-width |
| 5586 | * value from (tv_sec * SEED_C1 + tv_usec). The multipliers should |
| 5587 | * probably be bigger too. |
| 5588 | */ |
| 5589 | #if RANDBITS > 16 |
| 5590 | # define SEED_C1 1000003 |
| 5591 | #define SEED_C4 73819 |
| 5592 | #else |
| 5593 | # define SEED_C1 25747 |
| 5594 | #define SEED_C4 20639 |
| 5595 | #endif |
| 5596 | #define SEED_C2 3 |
| 5597 | #define SEED_C3 269 |
| 5598 | #define SEED_C5 26107 |
| 5599 | |
| 5600 | #ifndef PERL_NO_DEV_RANDOM |
| 5601 | int fd; |
| 5602 | #endif |
| 5603 | U32 u; |
| 5604 | #ifdef VMS |
| 5605 | /* when[] = (low 32 bits, high 32 bits) of time since epoch |
| 5606 | * in 100-ns units, typically incremented ever 10 ms. */ |
| 5607 | unsigned int when[2]; |
| 5608 | #else |
| 5609 | # ifdef HAS_GETTIMEOFDAY |
| 5610 | struct timeval when; |
| 5611 | # else |
| 5612 | Time_t when; |
| 5613 | # endif |
| 5614 | #endif |
| 5615 | |
| 5616 | /* This test is an escape hatch, this symbol isn't set by Configure. */ |
| 5617 | #ifndef PERL_NO_DEV_RANDOM |
| 5618 | #ifndef PERL_RANDOM_DEVICE |
| 5619 | /* /dev/random isn't used by default because reads from it will block |
| 5620 | * if there isn't enough entropy available. You can compile with |
| 5621 | * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there |
| 5622 | * is enough real entropy to fill the seed. */ |
| 5623 | # define PERL_RANDOM_DEVICE "/dev/urandom" |
| 5624 | #endif |
| 5625 | fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); |
| 5626 | if (fd != -1) { |
| 5627 | if (PerlLIO_read(fd, (void*)&u, sizeof u) != sizeof u) |
| 5628 | u = 0; |
| 5629 | PerlLIO_close(fd); |
| 5630 | if (u) |
| 5631 | return u; |
| 5632 | } |
| 5633 | #endif |
| 5634 | |
| 5635 | #ifdef VMS |
| 5636 | _ckvmssts(sys$gettim(when)); |
| 5637 | u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; |
| 5638 | #else |
| 5639 | # ifdef HAS_GETTIMEOFDAY |
| 5640 | PerlProc_gettimeofday(&when,NULL); |
| 5641 | u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; |
| 5642 | # else |
| 5643 | (void)time(&when); |
| 5644 | u = (U32)SEED_C1 * when; |
| 5645 | # endif |
| 5646 | #endif |
| 5647 | u += SEED_C3 * (U32)PerlProc_getpid(); |
| 5648 | u += SEED_C4 * (U32)PTR2UV(PL_stack_sp); |
| 5649 | #ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */ |
| 5650 | u += SEED_C5 * (U32)PTR2UV(&when); |
| 5651 | #endif |
| 5652 | return u; |
| 5653 | } |
| 5654 | |
| 5655 | void |
| 5656 | Perl_get_hash_seed(pTHX_ unsigned char *seed_buffer) |
| 5657 | { |
| 5658 | dVAR; |
| 5659 | const char *s; |
| 5660 | const unsigned char * const end= seed_buffer + PERL_HASH_SEED_BYTES; |
| 5661 | |
| 5662 | PERL_ARGS_ASSERT_GET_HASH_SEED; |
| 5663 | |
| 5664 | s= PerlEnv_getenv("PERL_HASH_SEED"); |
| 5665 | |
| 5666 | if ( s ) |
| 5667 | #ifndef USE_HASH_SEED_EXPLICIT |
| 5668 | { |
| 5669 | while (isSPACE(*s)) |
| 5670 | s++; |
| 5671 | |
| 5672 | while (isXDIGIT(*s) && seed_buffer < end) { |
| 5673 | *seed_buffer = READ_XDIGIT(s) << 4; |
| 5674 | if (isXDIGIT(*s)) { |
| 5675 | *seed_buffer |= READ_XDIGIT(s); |
| 5676 | } |
| 5677 | seed_buffer++; |
| 5678 | } |
| 5679 | /* should we check for unparsed crap? */ |
| 5680 | } |
| 5681 | else |
| 5682 | #endif |
| 5683 | { |
| 5684 | (void)seedDrand01((Rand_seed_t)seed()); |
| 5685 | |
| 5686 | while (seed_buffer < end) { |
| 5687 | *seed_buffer++ = (unsigned char)(Drand01() * (U8_MAX+1)); |
| 5688 | } |
| 5689 | } |
| 5690 | } |
| 5691 | |
| 5692 | #ifdef PERL_GLOBAL_STRUCT |
| 5693 | |
| 5694 | #define PERL_GLOBAL_STRUCT_INIT |
| 5695 | #include "opcode.h" /* the ppaddr and check */ |
| 5696 | |
| 5697 | struct perl_vars * |
| 5698 | Perl_init_global_struct(pTHX) |
| 5699 | { |
| 5700 | struct perl_vars *plvarsp = NULL; |
| 5701 | # ifdef PERL_GLOBAL_STRUCT |
| 5702 | const IV nppaddr = sizeof(Gppaddr)/sizeof(Perl_ppaddr_t); |
| 5703 | const IV ncheck = sizeof(Gcheck) /sizeof(Perl_check_t); |
| 5704 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
| 5705 | /* PerlMem_malloc() because can't use even safesysmalloc() this early. */ |
| 5706 | plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars)); |
| 5707 | if (!plvarsp) |
| 5708 | exit(1); |
| 5709 | # else |
| 5710 | plvarsp = PL_VarsPtr; |
| 5711 | # endif /* PERL_GLOBAL_STRUCT_PRIVATE */ |
| 5712 | # undef PERLVAR |
| 5713 | # undef PERLVARA |
| 5714 | # undef PERLVARI |
| 5715 | # undef PERLVARIC |
| 5716 | # define PERLVAR(prefix,var,type) /**/ |
| 5717 | # define PERLVARA(prefix,var,n,type) /**/ |
| 5718 | # define PERLVARI(prefix,var,type,init) plvarsp->prefix##var = init; |
| 5719 | # define PERLVARIC(prefix,var,type,init) plvarsp->prefix##var = init; |
| 5720 | # include "perlvars.h" |
| 5721 | # undef PERLVAR |
| 5722 | # undef PERLVARA |
| 5723 | # undef PERLVARI |
| 5724 | # undef PERLVARIC |
| 5725 | # ifdef PERL_GLOBAL_STRUCT |
| 5726 | plvarsp->Gppaddr = |
| 5727 | (Perl_ppaddr_t*) |
| 5728 | PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t)); |
| 5729 | if (!plvarsp->Gppaddr) |
| 5730 | exit(1); |
| 5731 | plvarsp->Gcheck = |
| 5732 | (Perl_check_t*) |
| 5733 | PerlMem_malloc(ncheck * sizeof(Perl_check_t)); |
| 5734 | if (!plvarsp->Gcheck) |
| 5735 | exit(1); |
| 5736 | Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t); |
| 5737 | Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t); |
| 5738 | # endif |
| 5739 | # ifdef PERL_SET_VARS |
| 5740 | PERL_SET_VARS(plvarsp); |
| 5741 | # endif |
| 5742 | # undef PERL_GLOBAL_STRUCT_INIT |
| 5743 | # endif |
| 5744 | return plvarsp; |
| 5745 | } |
| 5746 | |
| 5747 | #endif /* PERL_GLOBAL_STRUCT */ |
| 5748 | |
| 5749 | #ifdef PERL_GLOBAL_STRUCT |
| 5750 | |
| 5751 | void |
| 5752 | Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp) |
| 5753 | { |
| 5754 | PERL_ARGS_ASSERT_FREE_GLOBAL_STRUCT; |
| 5755 | # ifdef PERL_GLOBAL_STRUCT |
| 5756 | # ifdef PERL_UNSET_VARS |
| 5757 | PERL_UNSET_VARS(plvarsp); |
| 5758 | # endif |
| 5759 | free(plvarsp->Gppaddr); |
| 5760 | free(plvarsp->Gcheck); |
| 5761 | # ifdef PERL_GLOBAL_STRUCT_PRIVATE |
| 5762 | free(plvarsp); |
| 5763 | # endif |
| 5764 | # endif |
| 5765 | } |
| 5766 | |
| 5767 | #endif /* PERL_GLOBAL_STRUCT */ |
| 5768 | |
| 5769 | #ifdef PERL_MEM_LOG |
| 5770 | |
| 5771 | /* -DPERL_MEM_LOG: the Perl_mem_log_..() is compiled, including the |
| 5772 | * the default implementation, unless -DPERL_MEM_LOG_NOIMPL is also |
| 5773 | * given, and you supply your own implementation. |
| 5774 | * |
| 5775 | * The default implementation reads a single env var, PERL_MEM_LOG, |
| 5776 | * expecting one or more of the following: |
| 5777 | * |
| 5778 | * \d+ - fd fd to write to : must be 1st (atoi) |
| 5779 | * 'm' - memlog was PERL_MEM_LOG=1 |
| 5780 | * 's' - svlog was PERL_SV_LOG=1 |
| 5781 | * 't' - timestamp was PERL_MEM_LOG_TIMESTAMP=1 |
| 5782 | * |
| 5783 | * This makes the logger controllable enough that it can reasonably be |
| 5784 | * added to the system perl. |
| 5785 | */ |
| 5786 | |
| 5787 | /* -DPERL_MEM_LOG_SPRINTF_BUF_SIZE=X: size of a (stack-allocated) buffer |
| 5788 | * the Perl_mem_log_...() will use (either via sprintf or snprintf). |
| 5789 | */ |
| 5790 | #define PERL_MEM_LOG_SPRINTF_BUF_SIZE 128 |
| 5791 | |
| 5792 | /* -DPERL_MEM_LOG_FD=N: the file descriptor the Perl_mem_log_...() |
| 5793 | * writes to. In the default logger, this is settable at runtime. |
| 5794 | */ |
| 5795 | #ifndef PERL_MEM_LOG_FD |
| 5796 | # define PERL_MEM_LOG_FD 2 /* If STDERR is too boring for you. */ |
| 5797 | #endif |
| 5798 | |
| 5799 | #ifndef PERL_MEM_LOG_NOIMPL |
| 5800 | |
| 5801 | # ifdef DEBUG_LEAKING_SCALARS |
| 5802 | # define SV_LOG_SERIAL_FMT " [%lu]" |
| 5803 | # define _SV_LOG_SERIAL_ARG(sv) , (unsigned long) (sv)->sv_debug_serial |
| 5804 | # else |
| 5805 | # define SV_LOG_SERIAL_FMT |
| 5806 | # define _SV_LOG_SERIAL_ARG(sv) |
| 5807 | # endif |
| 5808 | |
| 5809 | static void |
| 5810 | S_mem_log_common(enum mem_log_type mlt, const UV n, |
| 5811 | const UV typesize, const char *type_name, const SV *sv, |
| 5812 | Malloc_t oldalloc, Malloc_t newalloc, |
| 5813 | const char *filename, const int linenumber, |
| 5814 | const char *funcname) |
| 5815 | { |
| 5816 | const char *pmlenv; |
| 5817 | |
| 5818 | PERL_ARGS_ASSERT_MEM_LOG_COMMON; |
| 5819 | |
| 5820 | pmlenv = PerlEnv_getenv("PERL_MEM_LOG"); |
| 5821 | if (!pmlenv) |
| 5822 | return; |
| 5823 | if (mlt < MLT_NEW_SV ? strchr(pmlenv,'m') : strchr(pmlenv,'s')) |
| 5824 | { |
| 5825 | /* We can't use SVs or PerlIO for obvious reasons, |
| 5826 | * so we'll use stdio and low-level IO instead. */ |
| 5827 | char buf[PERL_MEM_LOG_SPRINTF_BUF_SIZE]; |
| 5828 | |
| 5829 | # ifdef HAS_GETTIMEOFDAY |
| 5830 | # define MEM_LOG_TIME_FMT "%10d.%06d: " |
| 5831 | # define MEM_LOG_TIME_ARG (int)tv.tv_sec, (int)tv.tv_usec |
| 5832 | struct timeval tv; |
| 5833 | gettimeofday(&tv, 0); |
| 5834 | # else |
| 5835 | # define MEM_LOG_TIME_FMT "%10d: " |
| 5836 | # define MEM_LOG_TIME_ARG (int)when |
| 5837 | Time_t when; |
| 5838 | (void)time(&when); |
| 5839 | # endif |
| 5840 | /* If there are other OS specific ways of hires time than |
| 5841 | * gettimeofday() (see ext/Time-HiRes), the easiest way is |
| 5842 | * probably that they would be used to fill in the struct |
| 5843 | * timeval. */ |
| 5844 | { |
| 5845 | STRLEN len; |
| 5846 | int fd = atoi(pmlenv); |
| 5847 | if (!fd) |
| 5848 | fd = PERL_MEM_LOG_FD; |
| 5849 | |
| 5850 | if (strchr(pmlenv, 't')) { |
| 5851 | len = my_snprintf(buf, sizeof(buf), |
| 5852 | MEM_LOG_TIME_FMT, MEM_LOG_TIME_ARG); |
| 5853 | PerlLIO_write(fd, buf, len); |
| 5854 | } |
| 5855 | switch (mlt) { |
| 5856 | case MLT_ALLOC: |
| 5857 | len = my_snprintf(buf, sizeof(buf), |
| 5858 | "alloc: %s:%d:%s: %"IVdf" %"UVuf |
| 5859 | " %s = %"IVdf": %"UVxf"\n", |
| 5860 | filename, linenumber, funcname, n, typesize, |
| 5861 | type_name, n * typesize, PTR2UV(newalloc)); |
| 5862 | break; |
| 5863 | case MLT_REALLOC: |
| 5864 | len = my_snprintf(buf, sizeof(buf), |
| 5865 | "realloc: %s:%d:%s: %"IVdf" %"UVuf |
| 5866 | " %s = %"IVdf": %"UVxf" -> %"UVxf"\n", |
| 5867 | filename, linenumber, funcname, n, typesize, |
| 5868 | type_name, n * typesize, PTR2UV(oldalloc), |
| 5869 | PTR2UV(newalloc)); |
| 5870 | break; |
| 5871 | case MLT_FREE: |
| 5872 | len = my_snprintf(buf, sizeof(buf), |
| 5873 | "free: %s:%d:%s: %"UVxf"\n", |
| 5874 | filename, linenumber, funcname, |
| 5875 | PTR2UV(oldalloc)); |
| 5876 | break; |
| 5877 | case MLT_NEW_SV: |
| 5878 | case MLT_DEL_SV: |
| 5879 | len = my_snprintf(buf, sizeof(buf), |
| 5880 | "%s_SV: %s:%d:%s: %"UVxf SV_LOG_SERIAL_FMT "\n", |
| 5881 | mlt == MLT_NEW_SV ? "new" : "del", |
| 5882 | filename, linenumber, funcname, |
| 5883 | PTR2UV(sv) _SV_LOG_SERIAL_ARG(sv)); |
| 5884 | break; |
| 5885 | default: |
| 5886 | len = 0; |
| 5887 | } |
| 5888 | PerlLIO_write(fd, buf, len); |
| 5889 | } |
| 5890 | } |
| 5891 | } |
| 5892 | #endif /* !PERL_MEM_LOG_NOIMPL */ |
| 5893 | |
| 5894 | #ifndef PERL_MEM_LOG_NOIMPL |
| 5895 | # define \ |
| 5896 | mem_log_common_if(alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) \ |
| 5897 | mem_log_common (alty, num, tysz, tynm, sv, oal, nal, flnm, ln, fnnm) |
| 5898 | #else |
| 5899 | /* this is suboptimal, but bug compatible. User is providing their |
| 5900 | own implementation, but is getting these functions anyway, and they |
| 5901 | do nothing. But _NOIMPL users should be able to cope or fix */ |
| 5902 | # define \ |
| 5903 | mem_log_common_if(alty, num, tysz, tynm, u, oal, nal, flnm, ln, fnnm) \ |
| 5904 | /* mem_log_common_if_PERL_MEM_LOG_NOIMPL */ |
| 5905 | #endif |
| 5906 | |
| 5907 | Malloc_t |
| 5908 | Perl_mem_log_alloc(const UV n, const UV typesize, const char *type_name, |
| 5909 | Malloc_t newalloc, |
| 5910 | const char *filename, const int linenumber, |
| 5911 | const char *funcname) |
| 5912 | { |
| 5913 | mem_log_common_if(MLT_ALLOC, n, typesize, type_name, |
| 5914 | NULL, NULL, newalloc, |
| 5915 | filename, linenumber, funcname); |
| 5916 | return newalloc; |
| 5917 | } |
| 5918 | |
| 5919 | Malloc_t |
| 5920 | Perl_mem_log_realloc(const UV n, const UV typesize, const char *type_name, |
| 5921 | Malloc_t oldalloc, Malloc_t newalloc, |
| 5922 | const char *filename, const int linenumber, |
| 5923 | const char *funcname) |
| 5924 | { |
| 5925 | mem_log_common_if(MLT_REALLOC, n, typesize, type_name, |
| 5926 | NULL, oldalloc, newalloc, |
| 5927 | filename, linenumber, funcname); |
| 5928 | return newalloc; |
| 5929 | } |
| 5930 | |
| 5931 | Malloc_t |
| 5932 | Perl_mem_log_free(Malloc_t oldalloc, |
| 5933 | const char *filename, const int linenumber, |
| 5934 | const char *funcname) |
| 5935 | { |
| 5936 | mem_log_common_if(MLT_FREE, 0, 0, "", NULL, oldalloc, NULL, |
| 5937 | filename, linenumber, funcname); |
| 5938 | return oldalloc; |
| 5939 | } |
| 5940 | |
| 5941 | void |
| 5942 | Perl_mem_log_new_sv(const SV *sv, |
| 5943 | const char *filename, const int linenumber, |
| 5944 | const char *funcname) |
| 5945 | { |
| 5946 | mem_log_common_if(MLT_NEW_SV, 0, 0, "", sv, NULL, NULL, |
| 5947 | filename, linenumber, funcname); |
| 5948 | } |
| 5949 | |
| 5950 | void |
| 5951 | Perl_mem_log_del_sv(const SV *sv, |
| 5952 | const char *filename, const int linenumber, |
| 5953 | const char *funcname) |
| 5954 | { |
| 5955 | mem_log_common_if(MLT_DEL_SV, 0, 0, "", sv, NULL, NULL, |
| 5956 | filename, linenumber, funcname); |
| 5957 | } |
| 5958 | |
| 5959 | #endif /* PERL_MEM_LOG */ |
| 5960 | |
| 5961 | /* |
| 5962 | =for apidoc my_sprintf |
| 5963 | |
| 5964 | The C library C<sprintf>, wrapped if necessary, to ensure that it will return |
| 5965 | the length of the string written to the buffer. Only rare pre-ANSI systems |
| 5966 | need the wrapper function - usually this is a direct call to C<sprintf>. |
| 5967 | |
| 5968 | =cut |
| 5969 | */ |
| 5970 | #ifndef SPRINTF_RETURNS_STRLEN |
| 5971 | int |
| 5972 | Perl_my_sprintf(char *buffer, const char* pat, ...) |
| 5973 | { |
| 5974 | va_list args; |
| 5975 | PERL_ARGS_ASSERT_MY_SPRINTF; |
| 5976 | va_start(args, pat); |
| 5977 | vsprintf(buffer, pat, args); |
| 5978 | va_end(args); |
| 5979 | return strlen(buffer); |
| 5980 | } |
| 5981 | #endif |
| 5982 | |
| 5983 | /* |
| 5984 | =for apidoc my_snprintf |
| 5985 | |
| 5986 | The C library C<snprintf> functionality, if available and |
| 5987 | standards-compliant (uses C<vsnprintf>, actually). However, if the |
| 5988 | C<vsnprintf> is not available, will unfortunately use the unsafe |
| 5989 | C<vsprintf> which can overrun the buffer (there is an overrun check, |
| 5990 | but that may be too late). Consider using C<sv_vcatpvf> instead, or |
| 5991 | getting C<vsnprintf>. |
| 5992 | |
| 5993 | =cut |
| 5994 | */ |
| 5995 | int |
| 5996 | Perl_my_snprintf(char *buffer, const Size_t len, const char *format, ...) |
| 5997 | { |
| 5998 | int retval; |
| 5999 | va_list ap; |
| 6000 | PERL_ARGS_ASSERT_MY_SNPRINTF; |
| 6001 | va_start(ap, format); |
| 6002 | #ifdef HAS_VSNPRINTF |
| 6003 | retval = vsnprintf(buffer, len, format, ap); |
| 6004 | #else |
| 6005 | retval = vsprintf(buffer, format, ap); |
| 6006 | #endif |
| 6007 | va_end(ap); |
| 6008 | /* vsprintf() shows failure with < 0 */ |
| 6009 | if (retval < 0 |
| 6010 | #ifdef HAS_VSNPRINTF |
| 6011 | /* vsnprintf() shows failure with >= len */ |
| 6012 | || |
| 6013 | (len > 0 && (Size_t)retval >= len) |
| 6014 | #endif |
| 6015 | ) |
| 6016 | Perl_croak_nocontext("panic: my_snprintf buffer overflow"); |
| 6017 | return retval; |
| 6018 | } |
| 6019 | |
| 6020 | /* |
| 6021 | =for apidoc my_vsnprintf |
| 6022 | |
| 6023 | The C library C<vsnprintf> if available and standards-compliant. |
| 6024 | However, if if the C<vsnprintf> is not available, will unfortunately |
| 6025 | use the unsafe C<vsprintf> which can overrun the buffer (there is an |
| 6026 | overrun check, but that may be too late). Consider using |
| 6027 | C<sv_vcatpvf> instead, or getting C<vsnprintf>. |
| 6028 | |
| 6029 | =cut |
| 6030 | */ |
| 6031 | int |
| 6032 | Perl_my_vsnprintf(char *buffer, const Size_t len, const char *format, va_list ap) |
| 6033 | { |
| 6034 | int retval; |
| 6035 | #ifdef NEED_VA_COPY |
| 6036 | va_list apc; |
| 6037 | |
| 6038 | PERL_ARGS_ASSERT_MY_VSNPRINTF; |
| 6039 | |
| 6040 | Perl_va_copy(ap, apc); |
| 6041 | # ifdef HAS_VSNPRINTF |
| 6042 | retval = vsnprintf(buffer, len, format, apc); |
| 6043 | # else |
| 6044 | retval = vsprintf(buffer, format, apc); |
| 6045 | # endif |
| 6046 | #else |
| 6047 | # ifdef HAS_VSNPRINTF |
| 6048 | retval = vsnprintf(buffer, len, format, ap); |
| 6049 | # else |
| 6050 | retval = vsprintf(buffer, format, ap); |
| 6051 | # endif |
| 6052 | #endif /* #ifdef NEED_VA_COPY */ |
| 6053 | /* vsprintf() shows failure with < 0 */ |
| 6054 | if (retval < 0 |
| 6055 | #ifdef HAS_VSNPRINTF |
| 6056 | /* vsnprintf() shows failure with >= len */ |
| 6057 | || |
| 6058 | (len > 0 && (Size_t)retval >= len) |
| 6059 | #endif |
| 6060 | ) |
| 6061 | Perl_croak_nocontext("panic: my_vsnprintf buffer overflow"); |
| 6062 | return retval; |
| 6063 | } |
| 6064 | |
| 6065 | void |
| 6066 | Perl_my_clearenv(pTHX) |
| 6067 | { |
| 6068 | dVAR; |
| 6069 | #if ! defined(PERL_MICRO) |
| 6070 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) |
| 6071 | PerlEnv_clearenv(); |
| 6072 | # else /* ! (PERL_IMPLICIT_SYS || WIN32) */ |
| 6073 | # if defined(USE_ENVIRON_ARRAY) |
| 6074 | # if defined(USE_ITHREADS) |
| 6075 | /* only the parent thread can clobber the process environment */ |
| 6076 | if (PL_curinterp == aTHX) |
| 6077 | # endif /* USE_ITHREADS */ |
| 6078 | { |
| 6079 | # if ! defined(PERL_USE_SAFE_PUTENV) |
| 6080 | if ( !PL_use_safe_putenv) { |
| 6081 | I32 i; |
| 6082 | if (environ == PL_origenviron) |
| 6083 | environ = (char**)safesysmalloc(sizeof(char*)); |
| 6084 | else |
| 6085 | for (i = 0; environ[i]; i++) |
| 6086 | (void)safesysfree(environ[i]); |
| 6087 | } |
| 6088 | environ[0] = NULL; |
| 6089 | # else /* PERL_USE_SAFE_PUTENV */ |
| 6090 | # if defined(HAS_CLEARENV) |
| 6091 | (void)clearenv(); |
| 6092 | # elif defined(HAS_UNSETENV) |
| 6093 | int bsiz = 80; /* Most envvar names will be shorter than this. */ |
| 6094 | int bufsiz = bsiz * sizeof(char); /* sizeof(char) paranoid? */ |
| 6095 | char *buf = (char*)safesysmalloc(bufsiz); |
| 6096 | while (*environ != NULL) { |
| 6097 | char *e = strchr(*environ, '='); |
| 6098 | int l = e ? e - *environ : (int)strlen(*environ); |
| 6099 | if (bsiz < l + 1) { |
| 6100 | (void)safesysfree(buf); |
| 6101 | bsiz = l + 1; /* + 1 for the \0. */ |
| 6102 | buf = (char*)safesysmalloc(bufsiz); |
| 6103 | } |
| 6104 | memcpy(buf, *environ, l); |
| 6105 | buf[l] = '\0'; |
| 6106 | (void)unsetenv(buf); |
| 6107 | } |
| 6108 | (void)safesysfree(buf); |
| 6109 | # else /* ! HAS_CLEARENV && ! HAS_UNSETENV */ |
| 6110 | /* Just null environ and accept the leakage. */ |
| 6111 | *environ = NULL; |
| 6112 | # endif /* HAS_CLEARENV || HAS_UNSETENV */ |
| 6113 | # endif /* ! PERL_USE_SAFE_PUTENV */ |
| 6114 | } |
| 6115 | # endif /* USE_ENVIRON_ARRAY */ |
| 6116 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ |
| 6117 | #endif /* PERL_MICRO */ |
| 6118 | } |
| 6119 | |
| 6120 | #ifdef PERL_IMPLICIT_CONTEXT |
| 6121 | |
| 6122 | /* Implements the MY_CXT_INIT macro. The first time a module is loaded, |
| 6123 | the global PL_my_cxt_index is incremented, and that value is assigned to |
| 6124 | that module's static my_cxt_index (who's address is passed as an arg). |
| 6125 | Then, for each interpreter this function is called for, it makes sure a |
| 6126 | void* slot is available to hang the static data off, by allocating or |
| 6127 | extending the interpreter's PL_my_cxt_list array */ |
| 6128 | |
| 6129 | #ifndef PERL_GLOBAL_STRUCT_PRIVATE |
| 6130 | void * |
| 6131 | Perl_my_cxt_init(pTHX_ int *index, size_t size) |
| 6132 | { |
| 6133 | dVAR; |
| 6134 | void *p; |
| 6135 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
| 6136 | if (*index == -1) { |
| 6137 | /* this module hasn't been allocated an index yet */ |
| 6138 | #if defined(USE_ITHREADS) |
| 6139 | MUTEX_LOCK(&PL_my_ctx_mutex); |
| 6140 | #endif |
| 6141 | *index = PL_my_cxt_index++; |
| 6142 | #if defined(USE_ITHREADS) |
| 6143 | MUTEX_UNLOCK(&PL_my_ctx_mutex); |
| 6144 | #endif |
| 6145 | } |
| 6146 | |
| 6147 | /* make sure the array is big enough */ |
| 6148 | if (PL_my_cxt_size <= *index) { |
| 6149 | if (PL_my_cxt_size) { |
| 6150 | while (PL_my_cxt_size <= *index) |
| 6151 | PL_my_cxt_size *= 2; |
| 6152 | Renew(PL_my_cxt_list, PL_my_cxt_size, void *); |
| 6153 | } |
| 6154 | else { |
| 6155 | PL_my_cxt_size = 16; |
| 6156 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); |
| 6157 | } |
| 6158 | } |
| 6159 | /* newSV() allocates one more than needed */ |
| 6160 | p = (void*)SvPVX(newSV(size-1)); |
| 6161 | PL_my_cxt_list[*index] = p; |
| 6162 | Zero(p, size, char); |
| 6163 | return p; |
| 6164 | } |
| 6165 | |
| 6166 | #else /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ |
| 6167 | |
| 6168 | int |
| 6169 | Perl_my_cxt_index(pTHX_ const char *my_cxt_key) |
| 6170 | { |
| 6171 | dVAR; |
| 6172 | int index; |
| 6173 | |
| 6174 | PERL_ARGS_ASSERT_MY_CXT_INDEX; |
| 6175 | |
| 6176 | for (index = 0; index < PL_my_cxt_index; index++) { |
| 6177 | const char *key = PL_my_cxt_keys[index]; |
| 6178 | /* try direct pointer compare first - there are chances to success, |
| 6179 | * and it's much faster. |
| 6180 | */ |
| 6181 | if ((key == my_cxt_key) || strEQ(key, my_cxt_key)) |
| 6182 | return index; |
| 6183 | } |
| 6184 | return -1; |
| 6185 | } |
| 6186 | |
| 6187 | void * |
| 6188 | Perl_my_cxt_init(pTHX_ const char *my_cxt_key, size_t size) |
| 6189 | { |
| 6190 | dVAR; |
| 6191 | void *p; |
| 6192 | int index; |
| 6193 | |
| 6194 | PERL_ARGS_ASSERT_MY_CXT_INIT; |
| 6195 | |
| 6196 | index = Perl_my_cxt_index(aTHX_ my_cxt_key); |
| 6197 | if (index == -1) { |
| 6198 | /* this module hasn't been allocated an index yet */ |
| 6199 | #if defined(USE_ITHREADS) |
| 6200 | MUTEX_LOCK(&PL_my_ctx_mutex); |
| 6201 | #endif |
| 6202 | index = PL_my_cxt_index++; |
| 6203 | #if defined(USE_ITHREADS) |
| 6204 | MUTEX_UNLOCK(&PL_my_ctx_mutex); |
| 6205 | #endif |
| 6206 | } |
| 6207 | |
| 6208 | /* make sure the array is big enough */ |
| 6209 | if (PL_my_cxt_size <= index) { |
| 6210 | int old_size = PL_my_cxt_size; |
| 6211 | int i; |
| 6212 | if (PL_my_cxt_size) { |
| 6213 | while (PL_my_cxt_size <= index) |
| 6214 | PL_my_cxt_size *= 2; |
| 6215 | Renew(PL_my_cxt_list, PL_my_cxt_size, void *); |
| 6216 | Renew(PL_my_cxt_keys, PL_my_cxt_size, const char *); |
| 6217 | } |
| 6218 | else { |
| 6219 | PL_my_cxt_size = 16; |
| 6220 | Newx(PL_my_cxt_list, PL_my_cxt_size, void *); |
| 6221 | Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *); |
| 6222 | } |
| 6223 | for (i = old_size; i < PL_my_cxt_size; i++) { |
| 6224 | PL_my_cxt_keys[i] = 0; |
| 6225 | PL_my_cxt_list[i] = 0; |
| 6226 | } |
| 6227 | } |
| 6228 | PL_my_cxt_keys[index] = my_cxt_key; |
| 6229 | /* newSV() allocates one more than needed */ |
| 6230 | p = (void*)SvPVX(newSV(size-1)); |
| 6231 | PL_my_cxt_list[index] = p; |
| 6232 | Zero(p, size, char); |
| 6233 | return p; |
| 6234 | } |
| 6235 | #endif /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */ |
| 6236 | #endif /* PERL_IMPLICIT_CONTEXT */ |
| 6237 | |
| 6238 | void |
| 6239 | Perl_xs_version_bootcheck(pTHX_ U32 items, U32 ax, const char *xs_p, |
| 6240 | STRLEN xs_len) |
| 6241 | { |
| 6242 | SV *sv; |
| 6243 | const char *vn = NULL; |
| 6244 | SV *const module = PL_stack_base[ax]; |
| 6245 | |
| 6246 | PERL_ARGS_ASSERT_XS_VERSION_BOOTCHECK; |
| 6247 | |
| 6248 | if (items >= 2) /* version supplied as bootstrap arg */ |
| 6249 | sv = PL_stack_base[ax + 1]; |
| 6250 | else { |
| 6251 | /* XXX GV_ADDWARN */ |
| 6252 | vn = "XS_VERSION"; |
| 6253 | sv = get_sv(Perl_form(aTHX_ "%"SVf"::%s", module, vn), 0); |
| 6254 | if (!sv || !SvOK(sv)) { |
| 6255 | vn = "VERSION"; |
| 6256 | sv = get_sv(Perl_form(aTHX_ "%"SVf"::%s", module, vn), 0); |
| 6257 | } |
| 6258 | } |
| 6259 | if (sv) { |
| 6260 | SV *xssv = Perl_newSVpvn_flags(aTHX_ xs_p, xs_len, SVs_TEMP); |
| 6261 | SV *pmsv = sv_isobject(sv) && sv_derived_from(sv, "version") |
| 6262 | ? sv : sv_2mortal(new_version(sv)); |
| 6263 | xssv = upg_version(xssv, 0); |
| 6264 | if ( vcmp(pmsv,xssv) ) { |
| 6265 | SV *string = vstringify(xssv); |
| 6266 | SV *xpt = Perl_newSVpvf(aTHX_ "%"SVf" object version %"SVf |
| 6267 | " does not match ", module, string); |
| 6268 | |
| 6269 | SvREFCNT_dec(string); |
| 6270 | string = vstringify(pmsv); |
| 6271 | |
| 6272 | if (vn) { |
| 6273 | Perl_sv_catpvf(aTHX_ xpt, "$%"SVf"::%s %"SVf, module, vn, |
| 6274 | string); |
| 6275 | } else { |
| 6276 | Perl_sv_catpvf(aTHX_ xpt, "bootstrap parameter %"SVf, string); |
| 6277 | } |
| 6278 | SvREFCNT_dec(string); |
| 6279 | |
| 6280 | Perl_sv_2mortal(aTHX_ xpt); |
| 6281 | Perl_croak_sv(aTHX_ xpt); |
| 6282 | } |
| 6283 | } |
| 6284 | } |
| 6285 | |
| 6286 | void |
| 6287 | Perl_xs_apiversion_bootcheck(pTHX_ SV *module, const char *api_p, |
| 6288 | STRLEN api_len) |
| 6289 | { |
| 6290 | SV *xpt = NULL; |
| 6291 | SV *compver = Perl_newSVpvn_flags(aTHX_ api_p, api_len, SVs_TEMP); |
| 6292 | SV *runver; |
| 6293 | |
| 6294 | PERL_ARGS_ASSERT_XS_APIVERSION_BOOTCHECK; |
| 6295 | |
| 6296 | /* This might croak */ |
| 6297 | compver = upg_version(compver, 0); |
| 6298 | /* This should never croak */ |
| 6299 | runver = new_version(PL_apiversion); |
| 6300 | if (vcmp(compver, runver)) { |
| 6301 | SV *compver_string = vstringify(compver); |
| 6302 | SV *runver_string = vstringify(runver); |
| 6303 | xpt = Perl_newSVpvf(aTHX_ "Perl API version %"SVf |
| 6304 | " of %"SVf" does not match %"SVf, |
| 6305 | compver_string, module, runver_string); |
| 6306 | Perl_sv_2mortal(aTHX_ xpt); |
| 6307 | |
| 6308 | SvREFCNT_dec(compver_string); |
| 6309 | SvREFCNT_dec(runver_string); |
| 6310 | } |
| 6311 | SvREFCNT_dec(runver); |
| 6312 | if (xpt) |
| 6313 | Perl_croak_sv(aTHX_ xpt); |
| 6314 | } |
| 6315 | |
| 6316 | #ifndef HAS_STRLCAT |
| 6317 | Size_t |
| 6318 | Perl_my_strlcat(char *dst, const char *src, Size_t size) |
| 6319 | { |
| 6320 | Size_t used, length, copy; |
| 6321 | |
| 6322 | used = strlen(dst); |
| 6323 | length = strlen(src); |
| 6324 | if (size > 0 && used < size - 1) { |
| 6325 | copy = (length >= size - used) ? size - used - 1 : length; |
| 6326 | memcpy(dst + used, src, copy); |
| 6327 | dst[used + copy] = '\0'; |
| 6328 | } |
| 6329 | return used + length; |
| 6330 | } |
| 6331 | #endif |
| 6332 | |
| 6333 | #ifndef HAS_STRLCPY |
| 6334 | Size_t |
| 6335 | Perl_my_strlcpy(char *dst, const char *src, Size_t size) |
| 6336 | { |
| 6337 | Size_t length, copy; |
| 6338 | |
| 6339 | length = strlen(src); |
| 6340 | if (size > 0) { |
| 6341 | copy = (length >= size) ? size - 1 : length; |
| 6342 | memcpy(dst, src, copy); |
| 6343 | dst[copy] = '\0'; |
| 6344 | } |
| 6345 | return length; |
| 6346 | } |
| 6347 | #endif |
| 6348 | |
| 6349 | #if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_MSC_VER < 1400) && (WINVER < 0x0500) |
| 6350 | /* VC7 or 7.1, building with pre-VC7 runtime libraries. */ |
| 6351 | long _ftol( double ); /* Defined by VC6 C libs. */ |
| 6352 | long _ftol2( double dblSource ) { return _ftol( dblSource ); } |
| 6353 | #endif |
| 6354 | |
| 6355 | PERL_STATIC_INLINE bool |
| 6356 | S_gv_has_usable_name(pTHX_ GV *gv) |
| 6357 | { |
| 6358 | GV **gvp; |
| 6359 | return GvSTASH(gv) |
| 6360 | && HvENAME(GvSTASH(gv)) |
| 6361 | && (gvp = (GV **)hv_fetch( |
| 6362 | GvSTASH(gv), GvNAME(gv), |
| 6363 | GvNAMEUTF8(gv) ? -GvNAMELEN(gv) : GvNAMELEN(gv), 0 |
| 6364 | )) |
| 6365 | && *gvp == gv; |
| 6366 | } |
| 6367 | |
| 6368 | void |
| 6369 | Perl_get_db_sub(pTHX_ SV **svp, CV *cv) |
| 6370 | { |
| 6371 | dVAR; |
| 6372 | SV * const dbsv = GvSVn(PL_DBsub); |
| 6373 | const bool save_taint = TAINT_get; /* Accepted unused var warning under NO_TAINT_SUPPORT */ |
| 6374 | |
| 6375 | /* When we are called from pp_goto (svp is null), |
| 6376 | * we do not care about using dbsv to call CV; |
| 6377 | * it's for informational purposes only. |
| 6378 | */ |
| 6379 | |
| 6380 | PERL_ARGS_ASSERT_GET_DB_SUB; |
| 6381 | |
| 6382 | TAINT_set(FALSE); |
| 6383 | save_item(dbsv); |
| 6384 | if (!PERLDB_SUB_NN) { |
| 6385 | GV *gv = CvGV(cv); |
| 6386 | |
| 6387 | if (!svp) { |
| 6388 | gv_efullname3(dbsv, gv, NULL); |
| 6389 | } |
| 6390 | else if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
| 6391 | || strEQ(GvNAME(gv), "END") |
| 6392 | || ( /* Could be imported, and old sub redefined. */ |
| 6393 | (GvCV(gv) != cv || !S_gv_has_usable_name(aTHX_ gv)) |
| 6394 | && |
| 6395 | !( (SvTYPE(*svp) == SVt_PVGV) |
| 6396 | && (GvCV((const GV *)*svp) == cv) |
| 6397 | /* Use GV from the stack as a fallback. */ |
| 6398 | && S_gv_has_usable_name(aTHX_ gv = (GV *)*svp) |
| 6399 | ) |
| 6400 | ) |
| 6401 | ) { |
| 6402 | /* GV is potentially non-unique, or contain different CV. */ |
| 6403 | SV * const tmp = newRV(MUTABLE_SV(cv)); |
| 6404 | sv_setsv(dbsv, tmp); |
| 6405 | SvREFCNT_dec(tmp); |
| 6406 | } |
| 6407 | else { |
| 6408 | sv_sethek(dbsv, HvENAME_HEK(GvSTASH(gv))); |
| 6409 | sv_catpvs(dbsv, "::"); |
| 6410 | sv_catpvn_flags( |
| 6411 | dbsv, GvNAME(gv), GvNAMELEN(gv), |
| 6412 | GvNAMEUTF8(gv) ? SV_CATUTF8 : SV_CATBYTES |
| 6413 | ); |
| 6414 | } |
| 6415 | } |
| 6416 | else { |
| 6417 | const int type = SvTYPE(dbsv); |
| 6418 | if (type < SVt_PVIV && type != SVt_IV) |
| 6419 | sv_upgrade(dbsv, SVt_PVIV); |
| 6420 | (void)SvIOK_on(dbsv); |
| 6421 | SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */ |
| 6422 | } |
| 6423 | TAINT_IF(save_taint); |
| 6424 | } |
| 6425 | |
| 6426 | int |
| 6427 | Perl_my_dirfd(pTHX_ DIR * dir) { |
| 6428 | |
| 6429 | /* Most dirfd implementations have problems when passed NULL. */ |
| 6430 | if(!dir) |
| 6431 | return -1; |
| 6432 | #ifdef HAS_DIRFD |
| 6433 | return dirfd(dir); |
| 6434 | #elif defined(HAS_DIR_DD_FD) |
| 6435 | return dir->dd_fd; |
| 6436 | #else |
| 6437 | Perl_die(aTHX_ PL_no_func, "dirfd"); |
| 6438 | assert(0); /* NOT REACHED */ |
| 6439 | return 0; |
| 6440 | #endif |
| 6441 | } |
| 6442 | |
| 6443 | REGEXP * |
| 6444 | Perl_get_re_arg(pTHX_ SV *sv) { |
| 6445 | |
| 6446 | if (sv) { |
| 6447 | if (SvMAGICAL(sv)) |
| 6448 | mg_get(sv); |
| 6449 | if (SvROK(sv)) |
| 6450 | sv = MUTABLE_SV(SvRV(sv)); |
| 6451 | if (SvTYPE(sv) == SVt_REGEXP) |
| 6452 | return (REGEXP*) sv; |
| 6453 | } |
| 6454 | |
| 6455 | return NULL; |
| 6456 | } |
| 6457 | |
| 6458 | /* |
| 6459 | * Local variables: |
| 6460 | * c-indentation-style: bsd |
| 6461 | * c-basic-offset: 4 |
| 6462 | * indent-tabs-mode: nil |
| 6463 | * End: |
| 6464 | * |
| 6465 | * ex: set ts=8 sts=4 sw=4 et: |
| 6466 | */ |