| 1 | /* perl.c |
| 2 | * |
| 3 | * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 | * "A ship then new they built for him/of mithril and of elven glass" --Bilbo |
| 13 | */ |
| 14 | |
| 15 | /* This file contains the top-level functions that are used to create, use |
| 16 | * and destroy a perl interpreter, plus the functions used by XS code to |
| 17 | * call back into perl. Note that it does not contain the actual main() |
| 18 | * function of the interpreter; that can be found in perlmain.c |
| 19 | */ |
| 20 | |
| 21 | /* PSz 12 Nov 03 |
| 22 | * |
| 23 | * Be proud that perl(1) may proclaim: |
| 24 | * Setuid Perl scripts are safer than C programs ... |
| 25 | * Do not abandon (deprecate) suidperl. Do not advocate C wrappers. |
| 26 | * |
| 27 | * The flow was: perl starts, notices script is suid, execs suidperl with same |
| 28 | * arguments; suidperl opens script, checks many things, sets itself with |
| 29 | * right UID, execs perl with similar arguments but with script pre-opened on |
| 30 | * /dev/fd/xxx; perl checks script is as should be and does work. This was |
| 31 | * insecure: see perlsec(1) for many problems with this approach. |
| 32 | * |
| 33 | * The "correct" flow should be: perl starts, opens script and notices it is |
| 34 | * suid, checks many things, execs suidperl with similar arguments but with |
| 35 | * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are |
| 36 | * same, checks arguments match #! line, sets itself with right UID, execs |
| 37 | * perl with same arguments; perl checks many things and does work. |
| 38 | * |
| 39 | * (Opening the script in perl instead of suidperl, we "lose" scripts that |
| 40 | * are readable to the target UID but not to the invoker. Where did |
| 41 | * unreadable scripts work anyway?) |
| 42 | * |
| 43 | * For now, suidperl and perl are pretty much the same large and cumbersome |
| 44 | * program, so suidperl can check its argument list (see comments elsewhere). |
| 45 | * |
| 46 | * References: |
| 47 | * Original bug report: |
| 48 | * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218 |
| 49 | * http://rt.perl.org/rt2/Ticket/Display.html?id=6511 |
| 50 | * Comments and discussion with Debian: |
| 51 | * http://bugs.debian.org/203426 |
| 52 | * http://bugs.debian.org/220486 |
| 53 | * Debian Security Advisory DSA 431-1 (does not fully fix problem): |
| 54 | * http://www.debian.org/security/2004/dsa-431 |
| 55 | * CVE candidate: |
| 56 | * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618 |
| 57 | * Previous versions of this patch sent to perl5-porters: |
| 58 | * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html |
| 59 | * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html |
| 60 | * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html |
| 61 | * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html |
| 62 | * |
| 63 | Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/ |
| 64 | School of Mathematics and Statistics University of Sydney 2006 Australia |
| 65 | * |
| 66 | */ |
| 67 | /* PSz 13 Nov 03 |
| 68 | * Use truthful, neat, specific error messages. |
| 69 | * Cannot always hide the truth; security must not depend on doing so. |
| 70 | */ |
| 71 | |
| 72 | /* PSz 18 Feb 04 |
| 73 | * Use global(?), thread-local fdscript for easier checks. |
| 74 | * (I do not understand how we could possibly get a thread race: |
| 75 | * do not all threads go through the same initialization? Or in |
| 76 | * fact, are not threads started only after we get the script and |
| 77 | * so know what to do? Oh well, make things super-safe...) |
| 78 | */ |
| 79 | |
| 80 | #include "EXTERN.h" |
| 81 | #define PERL_IN_PERL_C |
| 82 | #include "perl.h" |
| 83 | #include "patchlevel.h" /* for local_patches */ |
| 84 | |
| 85 | #ifdef NETWARE |
| 86 | #include "nwutil.h" |
| 87 | char *nw_get_sitelib(const char *pl); |
| 88 | #endif |
| 89 | |
| 90 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
| 91 | #ifdef I_UNISTD |
| 92 | #include <unistd.h> |
| 93 | #endif |
| 94 | |
| 95 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 96 | # ifdef I_SYS_WAIT |
| 97 | # include <sys/wait.h> |
| 98 | # endif |
| 99 | # ifdef I_SYSUIO |
| 100 | # include <sys/uio.h> |
| 101 | # endif |
| 102 | |
| 103 | union control_un { |
| 104 | struct cmsghdr cm; |
| 105 | char control[CMSG_SPACE(sizeof(int))]; |
| 106 | }; |
| 107 | |
| 108 | #endif |
| 109 | |
| 110 | #ifdef __BEOS__ |
| 111 | # define HZ 1000000 |
| 112 | #endif |
| 113 | |
| 114 | #ifndef HZ |
| 115 | # ifdef CLK_TCK |
| 116 | # define HZ CLK_TCK |
| 117 | # else |
| 118 | # define HZ 60 |
| 119 | # endif |
| 120 | #endif |
| 121 | |
| 122 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO) |
| 123 | char *getenv (char *); /* Usually in <stdlib.h> */ |
| 124 | #endif |
| 125 | |
| 126 | static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen); |
| 127 | |
| 128 | #ifdef IAMSUID |
| 129 | #ifndef DOSUID |
| 130 | #define DOSUID |
| 131 | #endif |
| 132 | #endif /* IAMSUID */ |
| 133 | |
| 134 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 135 | #ifdef DOSUID |
| 136 | #undef DOSUID |
| 137 | #endif |
| 138 | #endif |
| 139 | |
| 140 | #define CALL_BODY_EVAL(myop) \ |
| 141 | if (PL_op == (myop)) \ |
| 142 | PL_op = Perl_pp_entereval(aTHX); \ |
| 143 | if (PL_op) \ |
| 144 | CALLRUNOPS(aTHX); |
| 145 | |
| 146 | #define CALL_BODY_SUB(myop) \ |
| 147 | if (PL_op == (myop)) \ |
| 148 | PL_op = Perl_pp_entersub(aTHX); \ |
| 149 | if (PL_op) \ |
| 150 | CALLRUNOPS(aTHX); |
| 151 | |
| 152 | #define CALL_LIST_BODY(cv) \ |
| 153 | PUSHMARK(PL_stack_sp); \ |
| 154 | call_sv((SV*)(cv), G_EVAL|G_DISCARD); |
| 155 | |
| 156 | static void |
| 157 | S_init_tls_and_interp(PerlInterpreter *my_perl) |
| 158 | { |
| 159 | dVAR; |
| 160 | if (!PL_curinterp) { |
| 161 | PERL_SET_INTERP(my_perl); |
| 162 | #if defined(USE_ITHREADS) |
| 163 | INIT_THREADS; |
| 164 | ALLOC_THREAD_KEY; |
| 165 | PERL_SET_THX(my_perl); |
| 166 | OP_REFCNT_INIT; |
| 167 | HINTS_REFCNT_INIT; |
| 168 | MUTEX_INIT(&PL_dollarzero_mutex); |
| 169 | # endif |
| 170 | #ifdef PERL_IMPLICIT_CONTEXT |
| 171 | MUTEX_INIT(&PL_my_ctx_mutex); |
| 172 | # endif |
| 173 | } |
| 174 | else { |
| 175 | PERL_SET_THX(my_perl); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | #ifdef PERL_IMPLICIT_SYS |
| 180 | PerlInterpreter * |
| 181 | perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS, |
| 182 | struct IPerlMem* ipMP, struct IPerlEnv* ipE, |
| 183 | struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO, |
| 184 | struct IPerlDir* ipD, struct IPerlSock* ipS, |
| 185 | struct IPerlProc* ipP) |
| 186 | { |
| 187 | PerlInterpreter *my_perl; |
| 188 | /* Newx() needs interpreter, so call malloc() instead */ |
| 189 | my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter)); |
| 190 | S_init_tls_and_interp(my_perl); |
| 191 | Zero(my_perl, 1, PerlInterpreter); |
| 192 | PL_Mem = ipM; |
| 193 | PL_MemShared = ipMS; |
| 194 | PL_MemParse = ipMP; |
| 195 | PL_Env = ipE; |
| 196 | PL_StdIO = ipStd; |
| 197 | PL_LIO = ipLIO; |
| 198 | PL_Dir = ipD; |
| 199 | PL_Sock = ipS; |
| 200 | PL_Proc = ipP; |
| 201 | INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl); |
| 202 | |
| 203 | return my_perl; |
| 204 | } |
| 205 | #else |
| 206 | |
| 207 | /* |
| 208 | =head1 Embedding Functions |
| 209 | |
| 210 | =for apidoc perl_alloc |
| 211 | |
| 212 | Allocates a new Perl interpreter. See L<perlembed>. |
| 213 | |
| 214 | =cut |
| 215 | */ |
| 216 | |
| 217 | PerlInterpreter * |
| 218 | perl_alloc(void) |
| 219 | { |
| 220 | PerlInterpreter *my_perl; |
| 221 | |
| 222 | /* Newx() needs interpreter, so call malloc() instead */ |
| 223 | my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter)); |
| 224 | |
| 225 | S_init_tls_and_interp(my_perl); |
| 226 | #ifndef PERL_TRACK_MEMPOOL |
| 227 | return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter); |
| 228 | #else |
| 229 | Zero(my_perl, 1, PerlInterpreter); |
| 230 | INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl); |
| 231 | return my_perl; |
| 232 | #endif |
| 233 | } |
| 234 | #endif /* PERL_IMPLICIT_SYS */ |
| 235 | |
| 236 | /* |
| 237 | =for apidoc perl_construct |
| 238 | |
| 239 | Initializes a new Perl interpreter. See L<perlembed>. |
| 240 | |
| 241 | =cut |
| 242 | */ |
| 243 | |
| 244 | void |
| 245 | perl_construct(pTHXx) |
| 246 | { |
| 247 | dVAR; |
| 248 | PERL_UNUSED_CONTEXT; |
| 249 | #ifdef MULTIPLICITY |
| 250 | init_interp(); |
| 251 | PL_perl_destruct_level = 1; |
| 252 | #else |
| 253 | if (PL_perl_destruct_level > 0) |
| 254 | init_interp(); |
| 255 | #endif |
| 256 | /* Init the real globals (and main thread)? */ |
| 257 | if (!PL_linestr) { |
| 258 | PL_curcop = &PL_compiling; /* needed by ckWARN, right away */ |
| 259 | |
| 260 | PL_linestr = newSV(79); |
| 261 | sv_upgrade(PL_linestr,SVt_PVIV); |
| 262 | |
| 263 | if (!SvREADONLY(&PL_sv_undef)) { |
| 264 | /* set read-only and try to insure than we wont see REFCNT==0 |
| 265 | very often */ |
| 266 | |
| 267 | SvREADONLY_on(&PL_sv_undef); |
| 268 | SvREFCNT(&PL_sv_undef) = (~(U32)0)/2; |
| 269 | |
| 270 | sv_setpv(&PL_sv_no,PL_No); |
| 271 | /* value lookup in void context - happens to have the side effect |
| 272 | of caching the numeric forms. */ |
| 273 | SvIV(&PL_sv_no); |
| 274 | SvNV(&PL_sv_no); |
| 275 | SvREADONLY_on(&PL_sv_no); |
| 276 | SvREFCNT(&PL_sv_no) = (~(U32)0)/2; |
| 277 | |
| 278 | sv_setpv(&PL_sv_yes,PL_Yes); |
| 279 | SvIV(&PL_sv_yes); |
| 280 | SvNV(&PL_sv_yes); |
| 281 | SvREADONLY_on(&PL_sv_yes); |
| 282 | SvREFCNT(&PL_sv_yes) = (~(U32)0)/2; |
| 283 | |
| 284 | SvREADONLY_on(&PL_sv_placeholder); |
| 285 | SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2; |
| 286 | } |
| 287 | |
| 288 | PL_sighandlerp = (Sighandler_t) Perl_sighandler; |
| 289 | #ifdef PERL_USES_PL_PIDSTATUS |
| 290 | PL_pidstatus = newHV(); |
| 291 | #endif |
| 292 | } |
| 293 | |
| 294 | PL_rs = newSVpvs("\n"); |
| 295 | |
| 296 | init_stacks(); |
| 297 | |
| 298 | init_ids(); |
| 299 | PL_lex_state = LEX_NOTPARSING; |
| 300 | |
| 301 | JMPENV_BOOTSTRAP; |
| 302 | STATUS_ALL_SUCCESS; |
| 303 | |
| 304 | init_i18nl10n(1); |
| 305 | SET_NUMERIC_STANDARD(); |
| 306 | |
| 307 | #if defined(LOCAL_PATCH_COUNT) |
| 308 | PL_localpatches = local_patches; /* For possible -v */ |
| 309 | #endif |
| 310 | |
| 311 | #ifdef HAVE_INTERP_INTERN |
| 312 | sys_intern_init(); |
| 313 | #endif |
| 314 | |
| 315 | PerlIO_init(aTHX); /* Hook to IO system */ |
| 316 | |
| 317 | PL_fdpid = newAV(); /* for remembering popen pids by fd */ |
| 318 | PL_modglobal = newHV(); /* pointers to per-interpreter module globals */ |
| 319 | PL_errors = newSVpvs(""); |
| 320 | sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */ |
| 321 | sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */ |
| 322 | sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */ |
| 323 | #ifdef USE_ITHREADS |
| 324 | PL_regex_padav = newAV(); |
| 325 | av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */ |
| 326 | PL_regex_pad = AvARRAY(PL_regex_padav); |
| 327 | #endif |
| 328 | #ifdef USE_REENTRANT_API |
| 329 | Perl_reentrant_init(aTHX); |
| 330 | #endif |
| 331 | |
| 332 | /* Note that strtab is a rather special HV. Assumptions are made |
| 333 | about not iterating on it, and not adding tie magic to it. |
| 334 | It is properly deallocated in perl_destruct() */ |
| 335 | PL_strtab = newHV(); |
| 336 | |
| 337 | HvSHAREKEYS_off(PL_strtab); /* mandatory */ |
| 338 | hv_ksplit(PL_strtab, 512); |
| 339 | |
| 340 | #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__)) |
| 341 | _dyld_lookup_and_bind |
| 342 | ("__environ", (unsigned long *) &environ_pointer, NULL); |
| 343 | #endif /* environ */ |
| 344 | |
| 345 | #ifndef PERL_MICRO |
| 346 | # ifdef USE_ENVIRON_ARRAY |
| 347 | PL_origenviron = environ; |
| 348 | # endif |
| 349 | #endif |
| 350 | |
| 351 | /* Use sysconf(_SC_CLK_TCK) if available, if not |
| 352 | * available or if the sysconf() fails, use the HZ. |
| 353 | * BeOS has those, but returns the wrong value. |
| 354 | * The HZ if not originally defined has been by now |
| 355 | * been defined as CLK_TCK, if available. */ |
| 356 | #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__) |
| 357 | PL_clocktick = sysconf(_SC_CLK_TCK); |
| 358 | if (PL_clocktick <= 0) |
| 359 | #endif |
| 360 | PL_clocktick = HZ; |
| 361 | |
| 362 | PL_stashcache = newHV(); |
| 363 | |
| 364 | PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION, |
| 365 | (int)PERL_VERSION, (int)PERL_SUBVERSION); |
| 366 | |
| 367 | #ifdef HAS_MMAP |
| 368 | if (!PL_mmap_page_size) { |
| 369 | #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE)) |
| 370 | { |
| 371 | SETERRNO(0, SS_NORMAL); |
| 372 | # ifdef _SC_PAGESIZE |
| 373 | PL_mmap_page_size = sysconf(_SC_PAGESIZE); |
| 374 | # else |
| 375 | PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE); |
| 376 | # endif |
| 377 | if ((long) PL_mmap_page_size < 0) { |
| 378 | if (errno) { |
| 379 | SV * const error = ERRSV; |
| 380 | SvUPGRADE(error, SVt_PV); |
| 381 | Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error)); |
| 382 | } |
| 383 | else |
| 384 | Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); |
| 385 | } |
| 386 | } |
| 387 | #else |
| 388 | # ifdef HAS_GETPAGESIZE |
| 389 | PL_mmap_page_size = getpagesize(); |
| 390 | # else |
| 391 | # if defined(I_SYS_PARAM) && defined(PAGESIZE) |
| 392 | PL_mmap_page_size = PAGESIZE; /* compiletime, bad */ |
| 393 | # endif |
| 394 | # endif |
| 395 | #endif |
| 396 | if (PL_mmap_page_size <= 0) |
| 397 | Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, |
| 398 | (IV) PL_mmap_page_size); |
| 399 | } |
| 400 | #endif /* HAS_MMAP */ |
| 401 | |
| 402 | #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE) |
| 403 | PL_timesbase.tms_utime = 0; |
| 404 | PL_timesbase.tms_stime = 0; |
| 405 | PL_timesbase.tms_cutime = 0; |
| 406 | PL_timesbase.tms_cstime = 0; |
| 407 | #endif |
| 408 | |
| 409 | #ifdef PERL_MAD |
| 410 | PL_curforce = -1; |
| 411 | #endif |
| 412 | |
| 413 | ENTER; |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | =for apidoc nothreadhook |
| 418 | |
| 419 | Stub that provides thread hook for perl_destruct when there are |
| 420 | no threads. |
| 421 | |
| 422 | =cut |
| 423 | */ |
| 424 | |
| 425 | int |
| 426 | Perl_nothreadhook(pTHX) |
| 427 | { |
| 428 | PERL_UNUSED_CONTEXT; |
| 429 | return 0; |
| 430 | } |
| 431 | |
| 432 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 433 | void |
| 434 | Perl_dump_sv_child(pTHX_ SV *sv) |
| 435 | { |
| 436 | ssize_t got; |
| 437 | const int sock = PL_dumper_fd; |
| 438 | const int debug_fd = PerlIO_fileno(Perl_debug_log); |
| 439 | union control_un control; |
| 440 | struct msghdr msg; |
| 441 | struct iovec vec[2]; |
| 442 | struct cmsghdr *cmptr; |
| 443 | int returned_errno; |
| 444 | unsigned char buffer[256]; |
| 445 | |
| 446 | if(sock == -1 || debug_fd == -1) |
| 447 | return; |
| 448 | |
| 449 | PerlIO_flush(Perl_debug_log); |
| 450 | |
| 451 | /* All these shenanigans are to pass a file descriptor over to our child for |
| 452 | it to dump out to. We can't let it hold open the file descriptor when it |
| 453 | forks, as the file descriptor it will dump to can turn out to be one end |
| 454 | of pipe that some other process will wait on for EOF. (So as it would |
| 455 | be open, the wait would be forever. */ |
| 456 | |
| 457 | msg.msg_control = control.control; |
| 458 | msg.msg_controllen = sizeof(control.control); |
| 459 | /* We're a connected socket so we don't need a destination */ |
| 460 | msg.msg_name = NULL; |
| 461 | msg.msg_namelen = 0; |
| 462 | msg.msg_iov = vec; |
| 463 | msg.msg_iovlen = 1; |
| 464 | |
| 465 | cmptr = CMSG_FIRSTHDR(&msg); |
| 466 | cmptr->cmsg_len = CMSG_LEN(sizeof(int)); |
| 467 | cmptr->cmsg_level = SOL_SOCKET; |
| 468 | cmptr->cmsg_type = SCM_RIGHTS; |
| 469 | *((int *)CMSG_DATA(cmptr)) = 1; |
| 470 | |
| 471 | vec[0].iov_base = (void*)&sv; |
| 472 | vec[0].iov_len = sizeof(sv); |
| 473 | got = sendmsg(sock, &msg, 0); |
| 474 | |
| 475 | if(got < 0) { |
| 476 | perror("Debug leaking scalars parent sendmsg failed"); |
| 477 | abort(); |
| 478 | } |
| 479 | if(got < sizeof(sv)) { |
| 480 | perror("Debug leaking scalars parent short sendmsg"); |
| 481 | abort(); |
| 482 | } |
| 483 | |
| 484 | /* Return protocol is |
| 485 | int: errno value |
| 486 | unsigned char: length of location string (0 for empty) |
| 487 | unsigned char*: string (not terminated) |
| 488 | */ |
| 489 | vec[0].iov_base = (void*)&returned_errno; |
| 490 | vec[0].iov_len = sizeof(returned_errno); |
| 491 | vec[1].iov_base = buffer; |
| 492 | vec[1].iov_len = 1; |
| 493 | |
| 494 | got = readv(sock, vec, 2); |
| 495 | |
| 496 | if(got < 0) { |
| 497 | perror("Debug leaking scalars parent read failed"); |
| 498 | PerlIO_flush(PerlIO_stderr()); |
| 499 | abort(); |
| 500 | } |
| 501 | if(got < sizeof(returned_errno) + 1) { |
| 502 | perror("Debug leaking scalars parent short read"); |
| 503 | PerlIO_flush(PerlIO_stderr()); |
| 504 | abort(); |
| 505 | } |
| 506 | |
| 507 | if (*buffer) { |
| 508 | got = read(sock, buffer + 1, *buffer); |
| 509 | if(got < 0) { |
| 510 | perror("Debug leaking scalars parent read 2 failed"); |
| 511 | PerlIO_flush(PerlIO_stderr()); |
| 512 | abort(); |
| 513 | } |
| 514 | |
| 515 | if(got < *buffer) { |
| 516 | perror("Debug leaking scalars parent short read 2"); |
| 517 | PerlIO_flush(PerlIO_stderr()); |
| 518 | abort(); |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | if (returned_errno || *buffer) { |
| 523 | Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno" |
| 524 | " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1, |
| 525 | returned_errno, strerror(returned_errno)); |
| 526 | } |
| 527 | } |
| 528 | #endif |
| 529 | |
| 530 | /* |
| 531 | =for apidoc perl_destruct |
| 532 | |
| 533 | Shuts down a Perl interpreter. See L<perlembed>. |
| 534 | |
| 535 | =cut |
| 536 | */ |
| 537 | |
| 538 | int |
| 539 | perl_destruct(pTHXx) |
| 540 | { |
| 541 | dVAR; |
| 542 | volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
| 543 | HV *hv; |
| 544 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 545 | pid_t child; |
| 546 | #endif |
| 547 | |
| 548 | PERL_UNUSED_CONTEXT; |
| 549 | |
| 550 | /* wait for all pseudo-forked children to finish */ |
| 551 | PERL_WAIT_FOR_CHILDREN; |
| 552 | |
| 553 | destruct_level = PL_perl_destruct_level; |
| 554 | #ifdef DEBUGGING |
| 555 | { |
| 556 | const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"); |
| 557 | if (s) { |
| 558 | const int i = atoi(s); |
| 559 | if (destruct_level < i) |
| 560 | destruct_level = i; |
| 561 | } |
| 562 | } |
| 563 | #endif |
| 564 | |
| 565 | if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) { |
| 566 | dJMPENV; |
| 567 | int x = 0; |
| 568 | |
| 569 | JMPENV_PUSH(x); |
| 570 | PERL_UNUSED_VAR(x); |
| 571 | if (PL_endav && !PL_minus_c) |
| 572 | call_list(PL_scopestack_ix, PL_endav); |
| 573 | JMPENV_POP; |
| 574 | } |
| 575 | LEAVE; |
| 576 | FREETMPS; |
| 577 | |
| 578 | /* Need to flush since END blocks can produce output */ |
| 579 | my_fflush_all(); |
| 580 | |
| 581 | if (CALL_FPTR(PL_threadhook)(aTHX)) { |
| 582 | /* Threads hook has vetoed further cleanup */ |
| 583 | return STATUS_EXIT; |
| 584 | } |
| 585 | |
| 586 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 587 | if (destruct_level != 0) { |
| 588 | /* Fork here to create a child. Our child's job is to preserve the |
| 589 | state of scalars prior to destruction, so that we can instruct it |
| 590 | to dump any scalars that we later find have leaked. |
| 591 | There's no subtlety in this code - it assumes POSIX, and it doesn't |
| 592 | fail gracefully */ |
| 593 | int fd[2]; |
| 594 | |
| 595 | if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) { |
| 596 | perror("Debug leaking scalars socketpair failed"); |
| 597 | abort(); |
| 598 | } |
| 599 | |
| 600 | child = fork(); |
| 601 | if(child == -1) { |
| 602 | perror("Debug leaking scalars fork failed"); |
| 603 | abort(); |
| 604 | } |
| 605 | if (!child) { |
| 606 | /* We are the child */ |
| 607 | const int sock = fd[1]; |
| 608 | const int debug_fd = PerlIO_fileno(Perl_debug_log); |
| 609 | int f; |
| 610 | const char *where; |
| 611 | /* Our success message is an integer 0, and a char 0 */ |
| 612 | static const char success[sizeof(int) + 1]; |
| 613 | |
| 614 | close(fd[0]); |
| 615 | |
| 616 | /* We need to close all other file descriptors otherwise we end up |
| 617 | with interesting hangs, where the parent closes its end of a |
| 618 | pipe, and sits waiting for (another) child to terminate. Only |
| 619 | that child never terminates, because it never gets EOF, because |
| 620 | we also have the far end of the pipe open. We even need to |
| 621 | close the debugging fd, because sometimes it happens to be one |
| 622 | end of a pipe, and a process is waiting on the other end for |
| 623 | EOF. Normally it would be closed at some point earlier in |
| 624 | destruction, but if we happen to cause the pipe to remain open, |
| 625 | EOF never occurs, and we get an infinite hang. Hence all the |
| 626 | games to pass in a file descriptor if it's actually needed. */ |
| 627 | |
| 628 | f = sysconf(_SC_OPEN_MAX); |
| 629 | if(f < 0) { |
| 630 | where = "sysconf failed"; |
| 631 | goto abort; |
| 632 | } |
| 633 | while (f--) { |
| 634 | if (f == sock) |
| 635 | continue; |
| 636 | close(f); |
| 637 | } |
| 638 | |
| 639 | while (1) { |
| 640 | SV *target; |
| 641 | union control_un control; |
| 642 | struct msghdr msg; |
| 643 | struct iovec vec[1]; |
| 644 | struct cmsghdr *cmptr; |
| 645 | ssize_t got; |
| 646 | int got_fd; |
| 647 | |
| 648 | msg.msg_control = control.control; |
| 649 | msg.msg_controllen = sizeof(control.control); |
| 650 | /* We're a connected socket so we don't need a source */ |
| 651 | msg.msg_name = NULL; |
| 652 | msg.msg_namelen = 0; |
| 653 | msg.msg_iov = vec; |
| 654 | msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]); |
| 655 | |
| 656 | vec[0].iov_base = (void*)⌖ |
| 657 | vec[0].iov_len = sizeof(target); |
| 658 | |
| 659 | got = recvmsg(sock, &msg, 0); |
| 660 | |
| 661 | if(got == 0) |
| 662 | break; |
| 663 | if(got < 0) { |
| 664 | where = "recv failed"; |
| 665 | goto abort; |
| 666 | } |
| 667 | if(got < sizeof(target)) { |
| 668 | where = "short recv"; |
| 669 | goto abort; |
| 670 | } |
| 671 | |
| 672 | if(!(cmptr = CMSG_FIRSTHDR(&msg))) { |
| 673 | where = "no cmsg"; |
| 674 | goto abort; |
| 675 | } |
| 676 | if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) { |
| 677 | where = "wrong cmsg_len"; |
| 678 | goto abort; |
| 679 | } |
| 680 | if(cmptr->cmsg_level != SOL_SOCKET) { |
| 681 | where = "wrong cmsg_level"; |
| 682 | goto abort; |
| 683 | } |
| 684 | if(cmptr->cmsg_type != SCM_RIGHTS) { |
| 685 | where = "wrong cmsg_type"; |
| 686 | goto abort; |
| 687 | } |
| 688 | |
| 689 | got_fd = *(int*)CMSG_DATA(cmptr); |
| 690 | /* For our last little bit of trickery, put the file descriptor |
| 691 | back into Perl_debug_log, as if we never actually closed it |
| 692 | */ |
| 693 | if(got_fd != debug_fd) { |
| 694 | if (dup2(got_fd, debug_fd) == -1) { |
| 695 | where = "dup2"; |
| 696 | goto abort; |
| 697 | } |
| 698 | } |
| 699 | sv_dump(target); |
| 700 | |
| 701 | PerlIO_flush(Perl_debug_log); |
| 702 | |
| 703 | got = write(sock, &success, sizeof(success)); |
| 704 | |
| 705 | if(got < 0) { |
| 706 | where = "write failed"; |
| 707 | goto abort; |
| 708 | } |
| 709 | if(got < sizeof(success)) { |
| 710 | where = "short write"; |
| 711 | goto abort; |
| 712 | } |
| 713 | } |
| 714 | _exit(0); |
| 715 | abort: |
| 716 | { |
| 717 | int send_errno = errno; |
| 718 | unsigned char length = (unsigned char) strlen(where); |
| 719 | struct iovec failure[3] = { |
| 720 | {(void*)&send_errno, sizeof(send_errno)}, |
| 721 | {&length, 1}, |
| 722 | {(void*)where, length} |
| 723 | }; |
| 724 | int got = writev(sock, failure, 3); |
| 725 | /* Bad news travels fast. Faster than data. We'll get a SIGPIPE |
| 726 | in the parent if we try to read from the socketpair after the |
| 727 | child has exited, even if there was data to read. |
| 728 | So sleep a bit to give the parent a fighting chance of |
| 729 | reading the data. */ |
| 730 | sleep(2); |
| 731 | _exit((got == -1) ? errno : 0); |
| 732 | } |
| 733 | /* End of child. */ |
| 734 | } |
| 735 | PL_dumper_fd = fd[0]; |
| 736 | close(fd[1]); |
| 737 | } |
| 738 | #endif |
| 739 | |
| 740 | /* We must account for everything. */ |
| 741 | |
| 742 | /* Destroy the main CV and syntax tree */ |
| 743 | /* Do this now, because destroying ops can cause new SVs to be generated |
| 744 | in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they |
| 745 | PL_curcop to point to a valid op from which the filename structure |
| 746 | member is copied. */ |
| 747 | PL_curcop = &PL_compiling; |
| 748 | if (PL_main_root) { |
| 749 | /* ensure comppad/curpad to refer to main's pad */ |
| 750 | if (CvPADLIST(PL_main_cv)) { |
| 751 | PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1); |
| 752 | } |
| 753 | op_free(PL_main_root); |
| 754 | PL_main_root = NULL; |
| 755 | } |
| 756 | PL_main_start = NULL; |
| 757 | SvREFCNT_dec(PL_main_cv); |
| 758 | PL_main_cv = NULL; |
| 759 | PL_dirty = TRUE; |
| 760 | |
| 761 | /* Tell PerlIO we are about to tear things apart in case |
| 762 | we have layers which are using resources that should |
| 763 | be cleaned up now. |
| 764 | */ |
| 765 | |
| 766 | PerlIO_destruct(aTHX); |
| 767 | |
| 768 | if (PL_sv_objcount) { |
| 769 | /* |
| 770 | * Try to destruct global references. We do this first so that the |
| 771 | * destructors and destructees still exist. Some sv's might remain. |
| 772 | * Non-referenced objects are on their own. |
| 773 | */ |
| 774 | sv_clean_objs(); |
| 775 | PL_sv_objcount = 0; |
| 776 | if (PL_defoutgv && !SvREFCNT(PL_defoutgv)) |
| 777 | PL_defoutgv = NULL; /* may have been freed */ |
| 778 | } |
| 779 | |
| 780 | /* unhook hooks which will soon be, or use, destroyed data */ |
| 781 | SvREFCNT_dec(PL_warnhook); |
| 782 | PL_warnhook = NULL; |
| 783 | SvREFCNT_dec(PL_diehook); |
| 784 | PL_diehook = NULL; |
| 785 | |
| 786 | /* call exit list functions */ |
| 787 | while (PL_exitlistlen-- > 0) |
| 788 | PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr); |
| 789 | |
| 790 | Safefree(PL_exitlist); |
| 791 | |
| 792 | PL_exitlist = NULL; |
| 793 | PL_exitlistlen = 0; |
| 794 | |
| 795 | if (destruct_level == 0){ |
| 796 | |
| 797 | DEBUG_P(debprofdump()); |
| 798 | |
| 799 | #if defined(PERLIO_LAYERS) |
| 800 | /* No more IO - including error messages ! */ |
| 801 | PerlIO_cleanup(aTHX); |
| 802 | #endif |
| 803 | |
| 804 | /* The exit() function will do everything that needs doing. */ |
| 805 | return STATUS_EXIT; |
| 806 | } |
| 807 | |
| 808 | /* jettison our possibly duplicated environment */ |
| 809 | /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied |
| 810 | * so we certainly shouldn't free it here |
| 811 | */ |
| 812 | #ifndef PERL_MICRO |
| 813 | #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV) |
| 814 | if (environ != PL_origenviron && !PL_use_safe_putenv |
| 815 | #ifdef USE_ITHREADS |
| 816 | /* only main thread can free environ[0] contents */ |
| 817 | && PL_curinterp == aTHX |
| 818 | #endif |
| 819 | ) |
| 820 | { |
| 821 | I32 i; |
| 822 | |
| 823 | for (i = 0; environ[i]; i++) |
| 824 | safesysfree(environ[i]); |
| 825 | |
| 826 | /* Must use safesysfree() when working with environ. */ |
| 827 | safesysfree(environ); |
| 828 | |
| 829 | environ = PL_origenviron; |
| 830 | } |
| 831 | #endif |
| 832 | #endif /* !PERL_MICRO */ |
| 833 | |
| 834 | /* reset so print() ends up where we expect */ |
| 835 | setdefout(NULL); |
| 836 | |
| 837 | #ifdef USE_ITHREADS |
| 838 | /* the syntax tree is shared between clones |
| 839 | * so op_free(PL_main_root) only ReREFCNT_dec's |
| 840 | * REGEXPs in the parent interpreter |
| 841 | * we need to manually ReREFCNT_dec for the clones |
| 842 | */ |
| 843 | { |
| 844 | I32 i = AvFILLp(PL_regex_padav) + 1; |
| 845 | SV * const * const ary = AvARRAY(PL_regex_padav); |
| 846 | |
| 847 | while (i) { |
| 848 | SV * const resv = ary[--i]; |
| 849 | |
| 850 | if (SvFLAGS(resv) & SVf_BREAK) { |
| 851 | /* this is PL_reg_curpm, already freed |
| 852 | * flag is set in regexec.c:S_regtry |
| 853 | */ |
| 854 | SvFLAGS(resv) &= ~SVf_BREAK; |
| 855 | } |
| 856 | else if(SvREPADTMP(resv)) { |
| 857 | SvREPADTMP_off(resv); |
| 858 | } |
| 859 | else if(SvIOKp(resv)) { |
| 860 | REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv)); |
| 861 | ReREFCNT_dec(re); |
| 862 | } |
| 863 | } |
| 864 | } |
| 865 | SvREFCNT_dec(PL_regex_padav); |
| 866 | PL_regex_padav = NULL; |
| 867 | PL_regex_pad = NULL; |
| 868 | #endif |
| 869 | |
| 870 | SvREFCNT_dec((SV*) PL_stashcache); |
| 871 | PL_stashcache = NULL; |
| 872 | |
| 873 | /* loosen bonds of global variables */ |
| 874 | |
| 875 | if(PL_rsfp) { |
| 876 | (void)PerlIO_close(PL_rsfp); |
| 877 | PL_rsfp = NULL; |
| 878 | } |
| 879 | |
| 880 | /* Filters for program text */ |
| 881 | SvREFCNT_dec(PL_rsfp_filters); |
| 882 | PL_rsfp_filters = NULL; |
| 883 | |
| 884 | /* switches */ |
| 885 | PL_preprocess = FALSE; |
| 886 | PL_minus_n = FALSE; |
| 887 | PL_minus_p = FALSE; |
| 888 | PL_minus_l = FALSE; |
| 889 | PL_minus_a = FALSE; |
| 890 | PL_minus_F = FALSE; |
| 891 | PL_doswitches = FALSE; |
| 892 | PL_dowarn = G_WARN_OFF; |
| 893 | PL_doextract = FALSE; |
| 894 | PL_sawampersand = FALSE; /* must save all match strings */ |
| 895 | PL_unsafe = FALSE; |
| 896 | |
| 897 | Safefree(PL_inplace); |
| 898 | PL_inplace = NULL; |
| 899 | SvREFCNT_dec(PL_patchlevel); |
| 900 | |
| 901 | if (PL_e_script) { |
| 902 | SvREFCNT_dec(PL_e_script); |
| 903 | PL_e_script = NULL; |
| 904 | } |
| 905 | |
| 906 | PL_perldb = 0; |
| 907 | |
| 908 | /* magical thingies */ |
| 909 | |
| 910 | SvREFCNT_dec(PL_ofs_sv); /* $, */ |
| 911 | PL_ofs_sv = NULL; |
| 912 | |
| 913 | SvREFCNT_dec(PL_ors_sv); /* $\ */ |
| 914 | PL_ors_sv = NULL; |
| 915 | |
| 916 | SvREFCNT_dec(PL_rs); /* $/ */ |
| 917 | PL_rs = NULL; |
| 918 | |
| 919 | Safefree(PL_osname); /* $^O */ |
| 920 | PL_osname = NULL; |
| 921 | |
| 922 | SvREFCNT_dec(PL_statname); |
| 923 | PL_statname = NULL; |
| 924 | PL_statgv = NULL; |
| 925 | |
| 926 | /* defgv, aka *_ should be taken care of elsewhere */ |
| 927 | |
| 928 | /* clean up after study() */ |
| 929 | SvREFCNT_dec(PL_lastscream); |
| 930 | PL_lastscream = NULL; |
| 931 | Safefree(PL_screamfirst); |
| 932 | PL_screamfirst = 0; |
| 933 | Safefree(PL_screamnext); |
| 934 | PL_screamnext = 0; |
| 935 | |
| 936 | /* float buffer */ |
| 937 | Safefree(PL_efloatbuf); |
| 938 | PL_efloatbuf = NULL; |
| 939 | PL_efloatsize = 0; |
| 940 | |
| 941 | /* startup and shutdown function lists */ |
| 942 | SvREFCNT_dec(PL_beginav); |
| 943 | SvREFCNT_dec(PL_beginav_save); |
| 944 | SvREFCNT_dec(PL_endav); |
| 945 | SvREFCNT_dec(PL_checkav); |
| 946 | SvREFCNT_dec(PL_checkav_save); |
| 947 | SvREFCNT_dec(PL_initav); |
| 948 | PL_beginav = NULL; |
| 949 | PL_beginav_save = NULL; |
| 950 | PL_endav = NULL; |
| 951 | PL_checkav = NULL; |
| 952 | PL_checkav_save = NULL; |
| 953 | PL_initav = NULL; |
| 954 | |
| 955 | /* shortcuts just get cleared */ |
| 956 | PL_envgv = NULL; |
| 957 | PL_incgv = NULL; |
| 958 | PL_hintgv = NULL; |
| 959 | PL_errgv = NULL; |
| 960 | PL_argvgv = NULL; |
| 961 | PL_argvoutgv = NULL; |
| 962 | PL_stdingv = NULL; |
| 963 | PL_stderrgv = NULL; |
| 964 | PL_last_in_gv = NULL; |
| 965 | PL_replgv = NULL; |
| 966 | PL_DBgv = NULL; |
| 967 | PL_DBline = NULL; |
| 968 | PL_DBsub = NULL; |
| 969 | PL_DBsingle = NULL; |
| 970 | PL_DBtrace = NULL; |
| 971 | PL_DBsignal = NULL; |
| 972 | PL_DBassertion = NULL; |
| 973 | PL_DBcv = NULL; |
| 974 | PL_dbargs = NULL; |
| 975 | PL_debstash = NULL; |
| 976 | |
| 977 | SvREFCNT_dec(PL_argvout_stack); |
| 978 | PL_argvout_stack = NULL; |
| 979 | |
| 980 | SvREFCNT_dec(PL_modglobal); |
| 981 | PL_modglobal = NULL; |
| 982 | SvREFCNT_dec(PL_preambleav); |
| 983 | PL_preambleav = NULL; |
| 984 | SvREFCNT_dec(PL_subname); |
| 985 | PL_subname = NULL; |
| 986 | SvREFCNT_dec(PL_linestr); |
| 987 | PL_linestr = NULL; |
| 988 | #ifdef PERL_USES_PL_PIDSTATUS |
| 989 | SvREFCNT_dec(PL_pidstatus); |
| 990 | PL_pidstatus = NULL; |
| 991 | #endif |
| 992 | SvREFCNT_dec(PL_toptarget); |
| 993 | PL_toptarget = NULL; |
| 994 | SvREFCNT_dec(PL_bodytarget); |
| 995 | PL_bodytarget = NULL; |
| 996 | PL_formtarget = NULL; |
| 997 | |
| 998 | /* free locale stuff */ |
| 999 | #ifdef USE_LOCALE_COLLATE |
| 1000 | Safefree(PL_collation_name); |
| 1001 | PL_collation_name = NULL; |
| 1002 | #endif |
| 1003 | |
| 1004 | #ifdef USE_LOCALE_NUMERIC |
| 1005 | Safefree(PL_numeric_name); |
| 1006 | PL_numeric_name = NULL; |
| 1007 | SvREFCNT_dec(PL_numeric_radix_sv); |
| 1008 | PL_numeric_radix_sv = NULL; |
| 1009 | #endif |
| 1010 | |
| 1011 | /* clear utf8 character classes */ |
| 1012 | SvREFCNT_dec(PL_utf8_alnum); |
| 1013 | SvREFCNT_dec(PL_utf8_alnumc); |
| 1014 | SvREFCNT_dec(PL_utf8_ascii); |
| 1015 | SvREFCNT_dec(PL_utf8_alpha); |
| 1016 | SvREFCNT_dec(PL_utf8_space); |
| 1017 | SvREFCNT_dec(PL_utf8_cntrl); |
| 1018 | SvREFCNT_dec(PL_utf8_graph); |
| 1019 | SvREFCNT_dec(PL_utf8_digit); |
| 1020 | SvREFCNT_dec(PL_utf8_upper); |
| 1021 | SvREFCNT_dec(PL_utf8_lower); |
| 1022 | SvREFCNT_dec(PL_utf8_print); |
| 1023 | SvREFCNT_dec(PL_utf8_punct); |
| 1024 | SvREFCNT_dec(PL_utf8_xdigit); |
| 1025 | SvREFCNT_dec(PL_utf8_mark); |
| 1026 | SvREFCNT_dec(PL_utf8_toupper); |
| 1027 | SvREFCNT_dec(PL_utf8_totitle); |
| 1028 | SvREFCNT_dec(PL_utf8_tolower); |
| 1029 | SvREFCNT_dec(PL_utf8_tofold); |
| 1030 | SvREFCNT_dec(PL_utf8_idstart); |
| 1031 | SvREFCNT_dec(PL_utf8_idcont); |
| 1032 | PL_utf8_alnum = NULL; |
| 1033 | PL_utf8_alnumc = NULL; |
| 1034 | PL_utf8_ascii = NULL; |
| 1035 | PL_utf8_alpha = NULL; |
| 1036 | PL_utf8_space = NULL; |
| 1037 | PL_utf8_cntrl = NULL; |
| 1038 | PL_utf8_graph = NULL; |
| 1039 | PL_utf8_digit = NULL; |
| 1040 | PL_utf8_upper = NULL; |
| 1041 | PL_utf8_lower = NULL; |
| 1042 | PL_utf8_print = NULL; |
| 1043 | PL_utf8_punct = NULL; |
| 1044 | PL_utf8_xdigit = NULL; |
| 1045 | PL_utf8_mark = NULL; |
| 1046 | PL_utf8_toupper = NULL; |
| 1047 | PL_utf8_totitle = NULL; |
| 1048 | PL_utf8_tolower = NULL; |
| 1049 | PL_utf8_tofold = NULL; |
| 1050 | PL_utf8_idstart = NULL; |
| 1051 | PL_utf8_idcont = NULL; |
| 1052 | |
| 1053 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 1054 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 1055 | PL_compiling.cop_warnings = NULL; |
| 1056 | Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash); |
| 1057 | PL_compiling.cop_hints_hash = NULL; |
| 1058 | CopFILE_free(&PL_compiling); |
| 1059 | CopSTASH_free(&PL_compiling); |
| 1060 | |
| 1061 | /* Prepare to destruct main symbol table. */ |
| 1062 | |
| 1063 | hv = PL_defstash; |
| 1064 | PL_defstash = 0; |
| 1065 | SvREFCNT_dec(hv); |
| 1066 | SvREFCNT_dec(PL_curstname); |
| 1067 | PL_curstname = NULL; |
| 1068 | |
| 1069 | /* clear queued errors */ |
| 1070 | SvREFCNT_dec(PL_errors); |
| 1071 | PL_errors = NULL; |
| 1072 | |
| 1073 | FREETMPS; |
| 1074 | if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) { |
| 1075 | if (PL_scopestack_ix != 0) |
| 1076 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
| 1077 | "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
| 1078 | (long)PL_scopestack_ix); |
| 1079 | if (PL_savestack_ix != 0) |
| 1080 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
| 1081 | "Unbalanced saves: %ld more saves than restores\n", |
| 1082 | (long)PL_savestack_ix); |
| 1083 | if (PL_tmps_floor != -1) |
| 1084 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n", |
| 1085 | (long)PL_tmps_floor + 1); |
| 1086 | if (cxstack_ix != -1) |
| 1087 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n", |
| 1088 | (long)cxstack_ix + 1); |
| 1089 | } |
| 1090 | |
| 1091 | /* Now absolutely destruct everything, somehow or other, loops or no. */ |
| 1092 | SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */ |
| 1093 | SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */ |
| 1094 | |
| 1095 | /* the 2 is for PL_fdpid and PL_strtab */ |
| 1096 | while (PL_sv_count > 2 && sv_clean_all()) |
| 1097 | ; |
| 1098 | |
| 1099 | SvFLAGS(PL_fdpid) &= ~SVTYPEMASK; |
| 1100 | SvFLAGS(PL_fdpid) |= SVt_PVAV; |
| 1101 | SvFLAGS(PL_strtab) &= ~SVTYPEMASK; |
| 1102 | SvFLAGS(PL_strtab) |= SVt_PVHV; |
| 1103 | |
| 1104 | AvREAL_off(PL_fdpid); /* no surviving entries */ |
| 1105 | SvREFCNT_dec(PL_fdpid); /* needed in io_close() */ |
| 1106 | PL_fdpid = NULL; |
| 1107 | |
| 1108 | #ifdef HAVE_INTERP_INTERN |
| 1109 | sys_intern_clear(); |
| 1110 | #endif |
| 1111 | |
| 1112 | /* Destruct the global string table. */ |
| 1113 | { |
| 1114 | /* Yell and reset the HeVAL() slots that are still holding refcounts, |
| 1115 | * so that sv_free() won't fail on them. |
| 1116 | * Now that the global string table is using a single hunk of memory |
| 1117 | * for both HE and HEK, we either need to explicitly unshare it the |
| 1118 | * correct way, or actually free things here. |
| 1119 | */ |
| 1120 | I32 riter = 0; |
| 1121 | const I32 max = HvMAX(PL_strtab); |
| 1122 | HE * const * const array = HvARRAY(PL_strtab); |
| 1123 | HE *hent = array[0]; |
| 1124 | |
| 1125 | for (;;) { |
| 1126 | if (hent && ckWARN_d(WARN_INTERNAL)) { |
| 1127 | HE * const next = HeNEXT(hent); |
| 1128 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), |
| 1129 | "Unbalanced string table refcount: (%ld) for \"%s\"", |
| 1130 | (long)hent->he_valu.hent_refcount, HeKEY(hent)); |
| 1131 | Safefree(hent); |
| 1132 | hent = next; |
| 1133 | } |
| 1134 | if (!hent) { |
| 1135 | if (++riter > max) |
| 1136 | break; |
| 1137 | hent = array[riter]; |
| 1138 | } |
| 1139 | } |
| 1140 | |
| 1141 | Safefree(array); |
| 1142 | HvARRAY(PL_strtab) = 0; |
| 1143 | HvTOTALKEYS(PL_strtab) = 0; |
| 1144 | HvFILL(PL_strtab) = 0; |
| 1145 | } |
| 1146 | SvREFCNT_dec(PL_strtab); |
| 1147 | |
| 1148 | #ifdef USE_ITHREADS |
| 1149 | /* free the pointer tables used for cloning */ |
| 1150 | ptr_table_free(PL_ptr_table); |
| 1151 | PL_ptr_table = (PTR_TBL_t*)NULL; |
| 1152 | #endif |
| 1153 | |
| 1154 | /* free special SVs */ |
| 1155 | |
| 1156 | SvREFCNT(&PL_sv_yes) = 0; |
| 1157 | sv_clear(&PL_sv_yes); |
| 1158 | SvANY(&PL_sv_yes) = NULL; |
| 1159 | SvFLAGS(&PL_sv_yes) = 0; |
| 1160 | |
| 1161 | SvREFCNT(&PL_sv_no) = 0; |
| 1162 | sv_clear(&PL_sv_no); |
| 1163 | SvANY(&PL_sv_no) = NULL; |
| 1164 | SvFLAGS(&PL_sv_no) = 0; |
| 1165 | |
| 1166 | { |
| 1167 | int i; |
| 1168 | for (i=0; i<=2; i++) { |
| 1169 | SvREFCNT(PERL_DEBUG_PAD(i)) = 0; |
| 1170 | sv_clear(PERL_DEBUG_PAD(i)); |
| 1171 | SvANY(PERL_DEBUG_PAD(i)) = NULL; |
| 1172 | SvFLAGS(PERL_DEBUG_PAD(i)) = 0; |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL)) |
| 1177 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count); |
| 1178 | |
| 1179 | #ifdef DEBUG_LEAKING_SCALARS |
| 1180 | if (PL_sv_count != 0) { |
| 1181 | SV* sva; |
| 1182 | SV* sv; |
| 1183 | register SV* svend; |
| 1184 | |
| 1185 | for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) { |
| 1186 | svend = &sva[SvREFCNT(sva)]; |
| 1187 | for (sv = sva + 1; sv < svend; ++sv) { |
| 1188 | if (SvTYPE(sv) != SVTYPEMASK) { |
| 1189 | PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p" |
| 1190 | " flags=0x%"UVxf |
| 1191 | " refcnt=%"UVuf pTHX__FORMAT "\n" |
| 1192 | "\tallocated at %s:%d %s %s%s\n", |
| 1193 | sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE, |
| 1194 | sv->sv_debug_file ? sv->sv_debug_file : "(unknown)", |
| 1195 | sv->sv_debug_line, |
| 1196 | sv->sv_debug_inpad ? "for" : "by", |
| 1197 | sv->sv_debug_optype ? |
| 1198 | PL_op_name[sv->sv_debug_optype]: "(none)", |
| 1199 | sv->sv_debug_cloned ? " (cloned)" : "" |
| 1200 | ); |
| 1201 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 1202 | Perl_dump_sv_child(aTHX_ sv); |
| 1203 | #endif |
| 1204 | } |
| 1205 | } |
| 1206 | } |
| 1207 | } |
| 1208 | #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 1209 | { |
| 1210 | int status; |
| 1211 | fd_set rset; |
| 1212 | /* Wait for up to 4 seconds for child to terminate. |
| 1213 | This seems to be the least effort way of timing out on reaping |
| 1214 | its exit status. */ |
| 1215 | struct timeval waitfor = {4, 0}; |
| 1216 | int sock = PL_dumper_fd; |
| 1217 | |
| 1218 | shutdown(sock, 1); |
| 1219 | FD_ZERO(&rset); |
| 1220 | FD_SET(sock, &rset); |
| 1221 | select(sock + 1, &rset, NULL, NULL, &waitfor); |
| 1222 | waitpid(child, &status, WNOHANG); |
| 1223 | close(sock); |
| 1224 | } |
| 1225 | #endif |
| 1226 | #endif |
| 1227 | PL_sv_count = 0; |
| 1228 | |
| 1229 | |
| 1230 | #if defined(PERLIO_LAYERS) |
| 1231 | /* No more IO - including error messages ! */ |
| 1232 | PerlIO_cleanup(aTHX); |
| 1233 | #endif |
| 1234 | |
| 1235 | /* sv_undef needs to stay immortal until after PerlIO_cleanup |
| 1236 | as currently layers use it rather than NULL as a marker |
| 1237 | for no arg - and will try and SvREFCNT_dec it. |
| 1238 | */ |
| 1239 | SvREFCNT(&PL_sv_undef) = 0; |
| 1240 | SvREADONLY_off(&PL_sv_undef); |
| 1241 | |
| 1242 | Safefree(PL_origfilename); |
| 1243 | PL_origfilename = NULL; |
| 1244 | Safefree(PL_reg_start_tmp); |
| 1245 | PL_reg_start_tmp = (char**)NULL; |
| 1246 | PL_reg_start_tmpl = 0; |
| 1247 | Safefree(PL_reg_curpm); |
| 1248 | Safefree(PL_reg_poscache); |
| 1249 | free_tied_hv_pool(); |
| 1250 | Safefree(PL_op_mask); |
| 1251 | Safefree(PL_psig_ptr); |
| 1252 | PL_psig_ptr = (SV**)NULL; |
| 1253 | Safefree(PL_psig_name); |
| 1254 | PL_psig_name = (SV**)NULL; |
| 1255 | Safefree(PL_bitcount); |
| 1256 | PL_bitcount = NULL; |
| 1257 | Safefree(PL_psig_pend); |
| 1258 | PL_psig_pend = (int*)NULL; |
| 1259 | PL_formfeed = NULL; |
| 1260 | nuke_stacks(); |
| 1261 | PL_tainting = FALSE; |
| 1262 | PL_taint_warn = FALSE; |
| 1263 | PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */ |
| 1264 | PL_debug = 0; |
| 1265 | |
| 1266 | DEBUG_P(debprofdump()); |
| 1267 | |
| 1268 | #ifdef USE_REENTRANT_API |
| 1269 | Perl_reentrant_free(aTHX); |
| 1270 | #endif |
| 1271 | |
| 1272 | sv_free_arenas(); |
| 1273 | |
| 1274 | while (PL_regmatch_slab) { |
| 1275 | regmatch_slab *s = PL_regmatch_slab; |
| 1276 | PL_regmatch_slab = PL_regmatch_slab->next; |
| 1277 | Safefree(s); |
| 1278 | } |
| 1279 | |
| 1280 | /* As the absolutely last thing, free the non-arena SV for mess() */ |
| 1281 | |
| 1282 | if (PL_mess_sv) { |
| 1283 | /* we know that type == SVt_PVMG */ |
| 1284 | |
| 1285 | /* it could have accumulated taint magic */ |
| 1286 | MAGIC* mg; |
| 1287 | MAGIC* moremagic; |
| 1288 | for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) { |
| 1289 | moremagic = mg->mg_moremagic; |
| 1290 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global |
| 1291 | && mg->mg_len >= 0) |
| 1292 | Safefree(mg->mg_ptr); |
| 1293 | Safefree(mg); |
| 1294 | } |
| 1295 | |
| 1296 | /* we know that type >= SVt_PV */ |
| 1297 | SvPV_free(PL_mess_sv); |
| 1298 | Safefree(SvANY(PL_mess_sv)); |
| 1299 | Safefree(PL_mess_sv); |
| 1300 | PL_mess_sv = NULL; |
| 1301 | } |
| 1302 | return STATUS_EXIT; |
| 1303 | } |
| 1304 | |
| 1305 | /* |
| 1306 | =for apidoc perl_free |
| 1307 | |
| 1308 | Releases a Perl interpreter. See L<perlembed>. |
| 1309 | |
| 1310 | =cut |
| 1311 | */ |
| 1312 | |
| 1313 | void |
| 1314 | perl_free(pTHXx) |
| 1315 | { |
| 1316 | #ifdef PERL_TRACK_MEMPOOL |
| 1317 | { |
| 1318 | /* |
| 1319 | * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero |
| 1320 | * value as we're probably hunting memory leaks then |
| 1321 | */ |
| 1322 | const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"); |
| 1323 | if (!s || atoi(s) == 0) { |
| 1324 | /* Emulate the PerlHost behaviour of free()ing all memory allocated in this |
| 1325 | thread at thread exit. */ |
| 1326 | while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)) |
| 1327 | safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next)); |
| 1328 | } |
| 1329 | } |
| 1330 | #endif |
| 1331 | |
| 1332 | #if defined(WIN32) || defined(NETWARE) |
| 1333 | # if defined(PERL_IMPLICIT_SYS) |
| 1334 | { |
| 1335 | # ifdef NETWARE |
| 1336 | void *host = nw_internal_host; |
| 1337 | # else |
| 1338 | void *host = w32_internal_host; |
| 1339 | # endif |
| 1340 | PerlMem_free(aTHXx); |
| 1341 | # ifdef NETWARE |
| 1342 | nw_delete_internal_host(host); |
| 1343 | # else |
| 1344 | win32_delete_internal_host(host); |
| 1345 | # endif |
| 1346 | } |
| 1347 | # else |
| 1348 | PerlMem_free(aTHXx); |
| 1349 | # endif |
| 1350 | #else |
| 1351 | PerlMem_free(aTHXx); |
| 1352 | #endif |
| 1353 | } |
| 1354 | |
| 1355 | #if defined(USE_ITHREADS) |
| 1356 | /* provide destructors to clean up the thread key when libperl is unloaded */ |
| 1357 | #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */ |
| 1358 | |
| 1359 | #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__) |
| 1360 | #pragma fini "perl_fini" |
| 1361 | #elif defined(__sun) && !defined(__GNUC__) |
| 1362 | #pragma fini (perl_fini) |
| 1363 | #endif |
| 1364 | |
| 1365 | static void |
| 1366 | #if defined(__GNUC__) |
| 1367 | __attribute__((destructor)) |
| 1368 | #endif |
| 1369 | perl_fini(void) |
| 1370 | { |
| 1371 | dVAR; |
| 1372 | if (PL_curinterp) |
| 1373 | FREE_THREAD_KEY; |
| 1374 | } |
| 1375 | |
| 1376 | #endif /* WIN32 */ |
| 1377 | #endif /* THREADS */ |
| 1378 | |
| 1379 | void |
| 1380 | Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr) |
| 1381 | { |
| 1382 | dVAR; |
| 1383 | Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry); |
| 1384 | PL_exitlist[PL_exitlistlen].fn = fn; |
| 1385 | PL_exitlist[PL_exitlistlen].ptr = ptr; |
| 1386 | ++PL_exitlistlen; |
| 1387 | } |
| 1388 | |
| 1389 | #ifdef HAS_PROCSELFEXE |
| 1390 | /* This is a function so that we don't hold on to MAXPATHLEN |
| 1391 | bytes of stack longer than necessary |
| 1392 | */ |
| 1393 | STATIC void |
| 1394 | S_procself_val(pTHX_ SV *sv, const char *arg0) |
| 1395 | { |
| 1396 | char buf[MAXPATHLEN]; |
| 1397 | int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1); |
| 1398 | |
| 1399 | /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe) |
| 1400 | includes a spurious NUL which will cause $^X to fail in system |
| 1401 | or backticks (this will prevent extensions from being built and |
| 1402 | many tests from working). readlink is not meant to add a NUL. |
| 1403 | Normal readlink works fine. |
| 1404 | */ |
| 1405 | if (len > 0 && buf[len-1] == '\0') { |
| 1406 | len--; |
| 1407 | } |
| 1408 | |
| 1409 | /* FreeBSD's implementation is acknowledged to be imperfect, sometimes |
| 1410 | returning the text "unknown" from the readlink rather than the path |
| 1411 | to the executable (or returning an error from the readlink). Any valid |
| 1412 | path has a '/' in it somewhere, so use that to validate the result. |
| 1413 | See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703 |
| 1414 | */ |
| 1415 | if (len > 0 && memchr(buf, '/', len)) { |
| 1416 | sv_setpvn(sv,buf,len); |
| 1417 | } |
| 1418 | else { |
| 1419 | sv_setpv(sv,arg0); |
| 1420 | } |
| 1421 | } |
| 1422 | #endif /* HAS_PROCSELFEXE */ |
| 1423 | |
| 1424 | STATIC void |
| 1425 | S_set_caret_X(pTHX) { |
| 1426 | dVAR; |
| 1427 | GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */ |
| 1428 | if (tmpgv) { |
| 1429 | #ifdef HAS_PROCSELFEXE |
| 1430 | S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]); |
| 1431 | #else |
| 1432 | #ifdef OS2 |
| 1433 | sv_setpv(GvSVn(tmpgv), os2_execname(aTHX)); |
| 1434 | #else |
| 1435 | sv_setpv(GvSVn(tmpgv),PL_origargv[0]); |
| 1436 | #endif |
| 1437 | #endif |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | /* |
| 1442 | =for apidoc perl_parse |
| 1443 | |
| 1444 | Tells a Perl interpreter to parse a Perl script. See L<perlembed>. |
| 1445 | |
| 1446 | =cut |
| 1447 | */ |
| 1448 | |
| 1449 | int |
| 1450 | perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env) |
| 1451 | { |
| 1452 | dVAR; |
| 1453 | I32 oldscope; |
| 1454 | int ret; |
| 1455 | dJMPENV; |
| 1456 | |
| 1457 | PERL_UNUSED_VAR(my_perl); |
| 1458 | |
| 1459 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 1460 | #ifdef IAMSUID |
| 1461 | #undef IAMSUID |
| 1462 | Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\ |
| 1463 | setuid perl scripts securely.\n"); |
| 1464 | #endif /* IAMSUID */ |
| 1465 | #endif |
| 1466 | |
| 1467 | #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) |
| 1468 | /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0 |
| 1469 | * This MUST be done before any hash stores or fetches take place. |
| 1470 | * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set) |
| 1471 | * yourself, it is your responsibility to provide a good random seed! |
| 1472 | * You can also define PERL_HASH_SEED in compile time, see hv.h. */ |
| 1473 | if (!PL_rehash_seed_set) |
| 1474 | PL_rehash_seed = get_hash_seed(); |
| 1475 | { |
| 1476 | const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG"); |
| 1477 | |
| 1478 | if (s && (atoi(s) == 1)) |
| 1479 | PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed); |
| 1480 | } |
| 1481 | #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */ |
| 1482 | |
| 1483 | PL_origargc = argc; |
| 1484 | PL_origargv = argv; |
| 1485 | |
| 1486 | if (PL_origalen != 0) { |
| 1487 | PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */ |
| 1488 | } |
| 1489 | else { |
| 1490 | /* Set PL_origalen be the sum of the contiguous argv[] |
| 1491 | * elements plus the size of the env in case that it is |
| 1492 | * contiguous with the argv[]. This is used in mg.c:Perl_magic_set() |
| 1493 | * as the maximum modifiable length of $0. In the worst case |
| 1494 | * the area we are able to modify is limited to the size of |
| 1495 | * the original argv[0]. (See below for 'contiguous', though.) |
| 1496 | * --jhi */ |
| 1497 | const char *s = NULL; |
| 1498 | int i; |
| 1499 | const UV mask = |
| 1500 | ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0); |
| 1501 | /* Do the mask check only if the args seem like aligned. */ |
| 1502 | const UV aligned = |
| 1503 | (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0])); |
| 1504 | |
| 1505 | /* See if all the arguments are contiguous in memory. Note |
| 1506 | * that 'contiguous' is a loose term because some platforms |
| 1507 | * align the argv[] and the envp[]. If the arguments look |
| 1508 | * like non-aligned, assume that they are 'strictly' or |
| 1509 | * 'traditionally' contiguous. If the arguments look like |
| 1510 | * aligned, we just check that they are within aligned |
| 1511 | * PTRSIZE bytes. As long as no system has something bizarre |
| 1512 | * like the argv[] interleaved with some other data, we are |
| 1513 | * fine. (Did I just evoke Murphy's Law?) --jhi */ |
| 1514 | if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) { |
| 1515 | while (*s) s++; |
| 1516 | for (i = 1; i < PL_origargc; i++) { |
| 1517 | if ((PL_origargv[i] == s + 1 |
| 1518 | #ifdef OS2 |
| 1519 | || PL_origargv[i] == s + 2 |
| 1520 | #endif |
| 1521 | ) |
| 1522 | || |
| 1523 | (aligned && |
| 1524 | (PL_origargv[i] > s && |
| 1525 | PL_origargv[i] <= |
| 1526 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1527 | ) |
| 1528 | { |
| 1529 | s = PL_origargv[i]; |
| 1530 | while (*s) s++; |
| 1531 | } |
| 1532 | else |
| 1533 | break; |
| 1534 | } |
| 1535 | } |
| 1536 | /* Can we grab env area too to be used as the area for $0? */ |
| 1537 | if (s && PL_origenviron) { |
| 1538 | if ((PL_origenviron[0] == s + 1 |
| 1539 | #ifdef OS2 |
| 1540 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
| 1541 | #endif |
| 1542 | ) |
| 1543 | || |
| 1544 | (aligned && |
| 1545 | (PL_origenviron[0] > s && |
| 1546 | PL_origenviron[0] <= |
| 1547 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1548 | ) |
| 1549 | { |
| 1550 | #ifndef OS2 |
| 1551 | s = PL_origenviron[0]; |
| 1552 | while (*s) s++; |
| 1553 | #endif |
| 1554 | my_setenv("NoNe SuCh", NULL); |
| 1555 | /* Force copy of environment. */ |
| 1556 | for (i = 1; PL_origenviron[i]; i++) { |
| 1557 | if (PL_origenviron[i] == s + 1 |
| 1558 | || |
| 1559 | (aligned && |
| 1560 | (PL_origenviron[i] > s && |
| 1561 | PL_origenviron[i] <= |
| 1562 | INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask))) |
| 1563 | ) |
| 1564 | { |
| 1565 | s = PL_origenviron[i]; |
| 1566 | while (*s) s++; |
| 1567 | } |
| 1568 | else |
| 1569 | break; |
| 1570 | } |
| 1571 | } |
| 1572 | } |
| 1573 | PL_origalen = s ? s - PL_origargv[0] + 1 : 0; |
| 1574 | } |
| 1575 | |
| 1576 | if (PL_do_undump) { |
| 1577 | |
| 1578 | /* Come here if running an undumped a.out. */ |
| 1579 | |
| 1580 | PL_origfilename = savepv(argv[0]); |
| 1581 | PL_do_undump = FALSE; |
| 1582 | cxstack_ix = -1; /* start label stack again */ |
| 1583 | init_ids(); |
| 1584 | assert (!PL_tainted); |
| 1585 | TAINT; |
| 1586 | S_set_caret_X(aTHX); |
| 1587 | TAINT_NOT; |
| 1588 | init_postdump_symbols(argc,argv,env); |
| 1589 | return 0; |
| 1590 | } |
| 1591 | |
| 1592 | if (PL_main_root) { |
| 1593 | op_free(PL_main_root); |
| 1594 | PL_main_root = NULL; |
| 1595 | } |
| 1596 | PL_main_start = NULL; |
| 1597 | SvREFCNT_dec(PL_main_cv); |
| 1598 | PL_main_cv = NULL; |
| 1599 | |
| 1600 | time(&PL_basetime); |
| 1601 | oldscope = PL_scopestack_ix; |
| 1602 | PL_dowarn = G_WARN_OFF; |
| 1603 | |
| 1604 | JMPENV_PUSH(ret); |
| 1605 | switch (ret) { |
| 1606 | case 0: |
| 1607 | parse_body(env,xsinit); |
| 1608 | if (PL_checkav) |
| 1609 | call_list(oldscope, PL_checkav); |
| 1610 | ret = 0; |
| 1611 | break; |
| 1612 | case 1: |
| 1613 | STATUS_ALL_FAILURE; |
| 1614 | /* FALL THROUGH */ |
| 1615 | case 2: |
| 1616 | /* my_exit() was called */ |
| 1617 | while (PL_scopestack_ix > oldscope) |
| 1618 | LEAVE; |
| 1619 | FREETMPS; |
| 1620 | PL_curstash = PL_defstash; |
| 1621 | if (PL_checkav) |
| 1622 | call_list(oldscope, PL_checkav); |
| 1623 | ret = STATUS_EXIT; |
| 1624 | break; |
| 1625 | case 3: |
| 1626 | PerlIO_printf(Perl_error_log, "panic: top_env\n"); |
| 1627 | ret = 1; |
| 1628 | break; |
| 1629 | } |
| 1630 | JMPENV_POP; |
| 1631 | return ret; |
| 1632 | } |
| 1633 | |
| 1634 | STATIC void * |
| 1635 | S_parse_body(pTHX_ char **env, XSINIT_t xsinit) |
| 1636 | { |
| 1637 | dVAR; |
| 1638 | int argc = PL_origargc; |
| 1639 | char **argv = PL_origargv; |
| 1640 | const char *scriptname = NULL; |
| 1641 | VOL bool dosearch = FALSE; |
| 1642 | const char *validarg = ""; |
| 1643 | register SV *sv; |
| 1644 | register char *s; |
| 1645 | const char *cddir = NULL; |
| 1646 | #ifdef USE_SITECUSTOMIZE |
| 1647 | bool minus_f = FALSE; |
| 1648 | #endif |
| 1649 | |
| 1650 | sv_setpvn(PL_linestr,"",0); |
| 1651 | sv = newSVpvs(""); /* first used for -I flags */ |
| 1652 | SAVEFREESV(sv); |
| 1653 | init_main_stash(); |
| 1654 | |
| 1655 | for (argc--,argv++; argc > 0; argc--,argv++) { |
| 1656 | if (argv[0][0] != '-' || !argv[0][1]) |
| 1657 | break; |
| 1658 | #ifdef DOSUID |
| 1659 | if (*validarg) |
| 1660 | validarg = " PHOOEY "; |
| 1661 | else |
| 1662 | validarg = argv[0]; |
| 1663 | /* |
| 1664 | * Can we rely on the kernel to start scripts with argv[1] set to |
| 1665 | * contain all #! line switches (the whole line)? (argv[0] is set to |
| 1666 | * the interpreter name, argv[2] to the script name; argv[3] and |
| 1667 | * above may contain other arguments.) |
| 1668 | */ |
| 1669 | #endif |
| 1670 | s = argv[0]+1; |
| 1671 | reswitch: |
| 1672 | switch (*s) { |
| 1673 | case 'C': |
| 1674 | #ifndef PERL_STRICT_CR |
| 1675 | case '\r': |
| 1676 | #endif |
| 1677 | case ' ': |
| 1678 | case '0': |
| 1679 | case 'F': |
| 1680 | case 'a': |
| 1681 | case 'c': |
| 1682 | case 'd': |
| 1683 | case 'D': |
| 1684 | case 'h': |
| 1685 | case 'i': |
| 1686 | case 'l': |
| 1687 | case 'M': |
| 1688 | case 'm': |
| 1689 | case 'n': |
| 1690 | case 'p': |
| 1691 | case 's': |
| 1692 | case 'u': |
| 1693 | case 'U': |
| 1694 | case 'v': |
| 1695 | case 'W': |
| 1696 | case 'X': |
| 1697 | case 'w': |
| 1698 | case 'A': |
| 1699 | if ((s = moreswitches(s))) |
| 1700 | goto reswitch; |
| 1701 | break; |
| 1702 | |
| 1703 | case 't': |
| 1704 | CHECK_MALLOC_TOO_LATE_FOR('t'); |
| 1705 | if( !PL_tainting ) { |
| 1706 | PL_taint_warn = TRUE; |
| 1707 | PL_tainting = TRUE; |
| 1708 | } |
| 1709 | s++; |
| 1710 | goto reswitch; |
| 1711 | case 'T': |
| 1712 | CHECK_MALLOC_TOO_LATE_FOR('T'); |
| 1713 | PL_tainting = TRUE; |
| 1714 | PL_taint_warn = FALSE; |
| 1715 | s++; |
| 1716 | goto reswitch; |
| 1717 | |
| 1718 | case 'E': |
| 1719 | PL_minus_E = TRUE; |
| 1720 | /* FALL THROUGH */ |
| 1721 | case 'e': |
| 1722 | #ifdef MACOS_TRADITIONAL |
| 1723 | /* ignore -e for Dev:Pseudo argument */ |
| 1724 | if (argv[1] && !strcmp(argv[1], "Dev:Pseudo")) |
| 1725 | break; |
| 1726 | #endif |
| 1727 | forbid_setid('e', -1); |
| 1728 | if (!PL_e_script) { |
| 1729 | PL_e_script = newSVpvs(""); |
| 1730 | filter_add(read_e_script, NULL); |
| 1731 | } |
| 1732 | if (*++s) |
| 1733 | sv_catpv(PL_e_script, s); |
| 1734 | else if (argv[1]) { |
| 1735 | sv_catpv(PL_e_script, argv[1]); |
| 1736 | argc--,argv++; |
| 1737 | } |
| 1738 | else |
| 1739 | Perl_croak(aTHX_ "No code specified for -%c", *s); |
| 1740 | sv_catpvs(PL_e_script, "\n"); |
| 1741 | break; |
| 1742 | |
| 1743 | case 'f': |
| 1744 | #ifdef USE_SITECUSTOMIZE |
| 1745 | minus_f = TRUE; |
| 1746 | #endif |
| 1747 | s++; |
| 1748 | goto reswitch; |
| 1749 | |
| 1750 | case 'I': /* -I handled both here and in moreswitches() */ |
| 1751 | forbid_setid('I', -1); |
| 1752 | if (!*++s && (s=argv[1]) != NULL) { |
| 1753 | argc--,argv++; |
| 1754 | } |
| 1755 | if (s && *s) { |
| 1756 | STRLEN len = strlen(s); |
| 1757 | const char * const p = savepvn(s, len); |
| 1758 | incpush(p, TRUE, TRUE, FALSE, FALSE); |
| 1759 | sv_catpvs(sv, "-I"); |
| 1760 | sv_catpvn(sv, p, len); |
| 1761 | sv_catpvs(sv, " "); |
| 1762 | Safefree(p); |
| 1763 | } |
| 1764 | else |
| 1765 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 1766 | break; |
| 1767 | case 'P': |
| 1768 | forbid_setid('P', -1); |
| 1769 | PL_preprocess = TRUE; |
| 1770 | s++; |
| 1771 | goto reswitch; |
| 1772 | case 'S': |
| 1773 | forbid_setid('S', -1); |
| 1774 | dosearch = TRUE; |
| 1775 | s++; |
| 1776 | goto reswitch; |
| 1777 | case 'V': |
| 1778 | { |
| 1779 | SV *opts_prog; |
| 1780 | |
| 1781 | if (!PL_preambleav) |
| 1782 | PL_preambleav = newAV(); |
| 1783 | av_push(PL_preambleav, |
| 1784 | newSVpvs("use Config;")); |
| 1785 | if (*++s != ':') { |
| 1786 | STRLEN opts; |
| 1787 | |
| 1788 | opts_prog = newSVpvs("print Config::myconfig(),"); |
| 1789 | #ifdef VMS |
| 1790 | sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\","); |
| 1791 | #else |
| 1792 | sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\","); |
| 1793 | #endif |
| 1794 | opts = SvCUR(opts_prog); |
| 1795 | |
| 1796 | Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:" |
| 1797 | # ifdef DEBUGGING |
| 1798 | " DEBUGGING" |
| 1799 | # endif |
| 1800 | # ifdef DEBUG_LEAKING_SCALARS |
| 1801 | " DEBUG_LEAKING_SCALARS" |
| 1802 | # endif |
| 1803 | # ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP |
| 1804 | " DEBUG_LEAKING_SCALARS_FORK_DUMP" |
| 1805 | # endif |
| 1806 | # ifdef FAKE_THREADS |
| 1807 | " FAKE_THREADS" |
| 1808 | # endif |
| 1809 | # ifdef MULTIPLICITY |
| 1810 | " MULTIPLICITY" |
| 1811 | # endif |
| 1812 | # ifdef MYMALLOC |
| 1813 | " MYMALLOC" |
| 1814 | # endif |
| 1815 | # ifdef NO_MATHOMS |
| 1816 | " NO_MATHOMS" |
| 1817 | # endif |
| 1818 | # ifdef PERL_DONT_CREATE_GVSV |
| 1819 | " PERL_DONT_CREATE_GVSV" |
| 1820 | # endif |
| 1821 | # ifdef PERL_GLOBAL_STRUCT |
| 1822 | " PERL_GLOBAL_STRUCT" |
| 1823 | # endif |
| 1824 | # ifdef PERL_IMPLICIT_CONTEXT |
| 1825 | " PERL_IMPLICIT_CONTEXT" |
| 1826 | # endif |
| 1827 | # ifdef PERL_IMPLICIT_SYS |
| 1828 | " PERL_IMPLICIT_SYS" |
| 1829 | # endif |
| 1830 | # ifdef PERL_MAD |
| 1831 | " PERL_MAD" |
| 1832 | # endif |
| 1833 | # ifdef PERL_MALLOC_WRAP |
| 1834 | " PERL_MALLOC_WRAP" |
| 1835 | # endif |
| 1836 | # ifdef PERL_NEED_APPCTX |
| 1837 | " PERL_NEED_APPCTX" |
| 1838 | # endif |
| 1839 | # ifdef PERL_NEED_TIMESBASE |
| 1840 | " PERL_NEED_TIMESBASE" |
| 1841 | # endif |
| 1842 | # ifdef PERL_OLD_COPY_ON_WRITE |
| 1843 | " PERL_OLD_COPY_ON_WRITE" |
| 1844 | # endif |
| 1845 | # ifdef PERL_TRACK_MEMPOOL |
| 1846 | " PERL_TRACK_MEMPOOL" |
| 1847 | # endif |
| 1848 | # ifdef PERL_USE_SAFE_PUTENV |
| 1849 | " PERL_USE_SAFE_PUTENV" |
| 1850 | # endif |
| 1851 | #ifdef PERL_USES_PL_PIDSTATUS |
| 1852 | " PERL_USES_PL_PIDSTATUS" |
| 1853 | #endif |
| 1854 | # ifdef PL_OP_SLAB_ALLOC |
| 1855 | " PL_OP_SLAB_ALLOC" |
| 1856 | # endif |
| 1857 | # ifdef THREADS_HAVE_PIDS |
| 1858 | " THREADS_HAVE_PIDS" |
| 1859 | # endif |
| 1860 | # ifdef USE_64_BIT_ALL |
| 1861 | " USE_64_BIT_ALL" |
| 1862 | # endif |
| 1863 | # ifdef USE_64_BIT_INT |
| 1864 | " USE_64_BIT_INT" |
| 1865 | # endif |
| 1866 | # ifdef USE_ITHREADS |
| 1867 | " USE_ITHREADS" |
| 1868 | # endif |
| 1869 | # ifdef USE_LARGE_FILES |
| 1870 | " USE_LARGE_FILES" |
| 1871 | # endif |
| 1872 | # ifdef USE_LONG_DOUBLE |
| 1873 | " USE_LONG_DOUBLE" |
| 1874 | # endif |
| 1875 | # ifdef USE_PERLIO |
| 1876 | " USE_PERLIO" |
| 1877 | # endif |
| 1878 | # ifdef USE_REENTRANT_API |
| 1879 | " USE_REENTRANT_API" |
| 1880 | # endif |
| 1881 | # ifdef USE_SFIO |
| 1882 | " USE_SFIO" |
| 1883 | # endif |
| 1884 | # ifdef USE_SITECUSTOMIZE |
| 1885 | " USE_SITECUSTOMIZE" |
| 1886 | # endif |
| 1887 | # ifdef USE_SOCKS |
| 1888 | " USE_SOCKS" |
| 1889 | # endif |
| 1890 | ); |
| 1891 | |
| 1892 | while (SvCUR(opts_prog) > opts+76) { |
| 1893 | /* find last space after "options: " and before col 76 |
| 1894 | */ |
| 1895 | |
| 1896 | const char *space; |
| 1897 | char * const pv = SvPV_nolen(opts_prog); |
| 1898 | const char c = pv[opts+76]; |
| 1899 | pv[opts+76] = '\0'; |
| 1900 | space = strrchr(pv+opts+26, ' '); |
| 1901 | pv[opts+76] = c; |
| 1902 | if (!space) break; /* "Can't happen" */ |
| 1903 | |
| 1904 | /* break the line before that space */ |
| 1905 | |
| 1906 | opts = space - pv; |
| 1907 | Perl_sv_insert(aTHX_ opts_prog, opts, 0, |
| 1908 | STR_WITH_LEN("\\n ")); |
| 1909 | } |
| 1910 | |
| 1911 | sv_catpvs(opts_prog,"\\n\","); |
| 1912 | |
| 1913 | #if defined(LOCAL_PATCH_COUNT) |
| 1914 | if (LOCAL_PATCH_COUNT > 0) { |
| 1915 | int i; |
| 1916 | sv_catpvs(opts_prog, |
| 1917 | "\" Locally applied patches:\\n\","); |
| 1918 | for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { |
| 1919 | if (PL_localpatches[i]) |
| 1920 | Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,", |
| 1921 | 0, PL_localpatches[i], 0); |
| 1922 | } |
| 1923 | } |
| 1924 | #endif |
| 1925 | Perl_sv_catpvf(aTHX_ opts_prog, |
| 1926 | "\" Built under %s\\n\"",OSNAME); |
| 1927 | #ifdef __DATE__ |
| 1928 | # ifdef __TIME__ |
| 1929 | Perl_sv_catpvf(aTHX_ opts_prog, |
| 1930 | ",\" Compiled at %s %s\\n\"",__DATE__, |
| 1931 | __TIME__); |
| 1932 | # else |
| 1933 | Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"", |
| 1934 | __DATE__); |
| 1935 | # endif |
| 1936 | #endif |
| 1937 | sv_catpvs(opts_prog, "; $\"=\"\\n \"; " |
| 1938 | "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } " |
| 1939 | "sort grep {/^PERL/} keys %ENV; "); |
| 1940 | #ifdef __CYGWIN__ |
| 1941 | sv_catpvs(opts_prog, |
| 1942 | "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";"); |
| 1943 | #endif |
| 1944 | sv_catpvs(opts_prog, |
| 1945 | "print \" \\%ENV:\\n @env\\n\" if @env;" |
| 1946 | "print \" \\@INC:\\n @INC\\n\";"); |
| 1947 | } |
| 1948 | else { |
| 1949 | ++s; |
| 1950 | opts_prog = Perl_newSVpvf(aTHX_ |
| 1951 | "Config::config_vars(qw%c%s%c)", |
| 1952 | 0, s, 0); |
| 1953 | s += strlen(s); |
| 1954 | } |
| 1955 | av_push(PL_preambleav, opts_prog); |
| 1956 | /* don't look for script or read stdin */ |
| 1957 | scriptname = BIT_BUCKET; |
| 1958 | goto reswitch; |
| 1959 | } |
| 1960 | case 'x': |
| 1961 | PL_doextract = TRUE; |
| 1962 | s++; |
| 1963 | if (*s) |
| 1964 | cddir = s; |
| 1965 | break; |
| 1966 | case 0: |
| 1967 | break; |
| 1968 | case '-': |
| 1969 | if (!*++s || isSPACE(*s)) { |
| 1970 | argc--,argv++; |
| 1971 | goto switch_end; |
| 1972 | } |
| 1973 | /* catch use of gnu style long options */ |
| 1974 | if (strEQ(s, "version")) { |
| 1975 | s = (char *)"v"; |
| 1976 | goto reswitch; |
| 1977 | } |
| 1978 | if (strEQ(s, "help")) { |
| 1979 | s = (char *)"h"; |
| 1980 | goto reswitch; |
| 1981 | } |
| 1982 | s--; |
| 1983 | /* FALL THROUGH */ |
| 1984 | default: |
| 1985 | Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s); |
| 1986 | } |
| 1987 | } |
| 1988 | switch_end: |
| 1989 | |
| 1990 | if ( |
| 1991 | #ifndef SECURE_INTERNAL_GETENV |
| 1992 | !PL_tainting && |
| 1993 | #endif |
| 1994 | (s = PerlEnv_getenv("PERL5OPT"))) |
| 1995 | { |
| 1996 | const char *popt = s; |
| 1997 | while (isSPACE(*s)) |
| 1998 | s++; |
| 1999 | if (*s == '-' && *(s+1) == 'T') { |
| 2000 | CHECK_MALLOC_TOO_LATE_FOR('T'); |
| 2001 | PL_tainting = TRUE; |
| 2002 | PL_taint_warn = FALSE; |
| 2003 | } |
| 2004 | else { |
| 2005 | char *popt_copy = NULL; |
| 2006 | while (s && *s) { |
| 2007 | char *d; |
| 2008 | while (isSPACE(*s)) |
| 2009 | s++; |
| 2010 | if (*s == '-') { |
| 2011 | s++; |
| 2012 | if (isSPACE(*s)) |
| 2013 | continue; |
| 2014 | } |
| 2015 | d = s; |
| 2016 | if (!*s) |
| 2017 | break; |
| 2018 | if (!strchr("CDIMUdmtwA", *s)) |
| 2019 | Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s); |
| 2020 | while (++s && *s) { |
| 2021 | if (isSPACE(*s)) { |
| 2022 | if (!popt_copy) { |
| 2023 | popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0))); |
| 2024 | s = popt_copy + (s - popt); |
| 2025 | d = popt_copy + (d - popt); |
| 2026 | } |
| 2027 | *s++ = '\0'; |
| 2028 | break; |
| 2029 | } |
| 2030 | } |
| 2031 | if (*d == 't') { |
| 2032 | if( !PL_tainting ) { |
| 2033 | PL_taint_warn = TRUE; |
| 2034 | PL_tainting = TRUE; |
| 2035 | } |
| 2036 | } else { |
| 2037 | moreswitches(d); |
| 2038 | } |
| 2039 | } |
| 2040 | } |
| 2041 | } |
| 2042 | |
| 2043 | #ifdef USE_SITECUSTOMIZE |
| 2044 | if (!minus_f) { |
| 2045 | if (!PL_preambleav) |
| 2046 | PL_preambleav = newAV(); |
| 2047 | av_unshift(PL_preambleav, 1); |
| 2048 | (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP)); |
| 2049 | } |
| 2050 | #endif |
| 2051 | |
| 2052 | if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) { |
| 2053 | PL_compiling.cop_warnings |
| 2054 | = Perl_new_warnings_bitfield(aTHX_ NULL, WARN_TAINTstring, WARNsize); |
| 2055 | } |
| 2056 | |
| 2057 | if (!scriptname) |
| 2058 | scriptname = argv[0]; |
| 2059 | if (PL_e_script) { |
| 2060 | argc++,argv--; |
| 2061 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
| 2062 | } |
| 2063 | else if (scriptname == NULL) { |
| 2064 | #ifdef MSDOS |
| 2065 | if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) ) |
| 2066 | moreswitches("h"); |
| 2067 | #endif |
| 2068 | scriptname = "-"; |
| 2069 | } |
| 2070 | |
| 2071 | /* Set $^X early so that it can be used for relocatable paths in @INC */ |
| 2072 | assert (!PL_tainted); |
| 2073 | TAINT; |
| 2074 | S_set_caret_X(aTHX); |
| 2075 | TAINT_NOT; |
| 2076 | init_perllib(); |
| 2077 | |
| 2078 | { |
| 2079 | int suidscript; |
| 2080 | const int fdscript |
| 2081 | = open_script(scriptname, dosearch, sv, &suidscript); |
| 2082 | |
| 2083 | validate_suid(validarg, scriptname, fdscript, suidscript); |
| 2084 | |
| 2085 | #ifndef PERL_MICRO |
| 2086 | # if defined(SIGCHLD) || defined(SIGCLD) |
| 2087 | { |
| 2088 | # ifndef SIGCHLD |
| 2089 | # define SIGCHLD SIGCLD |
| 2090 | # endif |
| 2091 | Sighandler_t sigstate = rsignal_state(SIGCHLD); |
| 2092 | if (sigstate == (Sighandler_t) SIG_IGN) { |
| 2093 | if (ckWARN(WARN_SIGNAL)) |
| 2094 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), |
| 2095 | "Can't ignore signal CHLD, forcing to default"); |
| 2096 | (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL); |
| 2097 | } |
| 2098 | } |
| 2099 | # endif |
| 2100 | #endif |
| 2101 | |
| 2102 | if (PL_doextract |
| 2103 | #ifdef MACOS_TRADITIONAL |
| 2104 | || gMacPerl_AlwaysExtract |
| 2105 | #endif |
| 2106 | ) { |
| 2107 | |
| 2108 | /* This will croak if suidscript is >= 0, as -x cannot be used with |
| 2109 | setuid scripts. */ |
| 2110 | forbid_setid('x', suidscript); |
| 2111 | /* Hence you can't get here if suidscript >= 0 */ |
| 2112 | |
| 2113 | find_beginning(); |
| 2114 | if (cddir && PerlDir_chdir( (char *)cddir ) < 0) |
| 2115 | Perl_croak(aTHX_ "Can't chdir to %s",cddir); |
| 2116 | } |
| 2117 | } |
| 2118 | |
| 2119 | PL_main_cv = PL_compcv = (CV*)newSV(0); |
| 2120 | sv_upgrade((SV *)PL_compcv, SVt_PVCV); |
| 2121 | CvUNIQUE_on(PL_compcv); |
| 2122 | |
| 2123 | CvPADLIST(PL_compcv) = pad_new(0); |
| 2124 | |
| 2125 | boot_core_PerlIO(); |
| 2126 | boot_core_UNIVERSAL(); |
| 2127 | boot_core_xsutils(); |
| 2128 | |
| 2129 | if (xsinit) |
| 2130 | (*xsinit)(aTHX); /* in case linked C routines want magical variables */ |
| 2131 | #ifndef PERL_MICRO |
| 2132 | #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN) |
| 2133 | init_os_extras(); |
| 2134 | #endif |
| 2135 | #endif |
| 2136 | |
| 2137 | #ifdef USE_SOCKS |
| 2138 | # ifdef HAS_SOCKS5_INIT |
| 2139 | socks5_init(argv[0]); |
| 2140 | # else |
| 2141 | SOCKSinit(argv[0]); |
| 2142 | # endif |
| 2143 | #endif |
| 2144 | |
| 2145 | init_predump_symbols(); |
| 2146 | /* init_postdump_symbols not currently designed to be called */ |
| 2147 | /* more than once (ENV isn't cleared first, for example) */ |
| 2148 | /* But running with -u leaves %ENV & @ARGV undefined! XXX */ |
| 2149 | if (!PL_do_undump) |
| 2150 | init_postdump_symbols(argc,argv,env); |
| 2151 | |
| 2152 | /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE}, |
| 2153 | * or explicitly in some platforms. |
| 2154 | * locale.c:Perl_init_i18nl10n() if the environment |
| 2155 | * look like the user wants to use UTF-8. */ |
| 2156 | #if defined(__SYMBIAN32__) |
| 2157 | PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */ |
| 2158 | #endif |
| 2159 | if (PL_unicode) { |
| 2160 | /* Requires init_predump_symbols(). */ |
| 2161 | if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { |
| 2162 | IO* io; |
| 2163 | PerlIO* fp; |
| 2164 | SV* sv; |
| 2165 | |
| 2166 | /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR |
| 2167 | * and the default open disciplines. */ |
| 2168 | if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) && |
| 2169 | PL_stdingv && (io = GvIO(PL_stdingv)) && |
| 2170 | (fp = IoIFP(io))) |
| 2171 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2172 | if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) && |
| 2173 | PL_defoutgv && (io = GvIO(PL_defoutgv)) && |
| 2174 | (fp = IoOFP(io))) |
| 2175 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2176 | if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) && |
| 2177 | PL_stderrgv && (io = GvIO(PL_stderrgv)) && |
| 2178 | (fp = IoOFP(io))) |
| 2179 | PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8"); |
| 2180 | if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) && |
| 2181 | (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL, |
| 2182 | SVt_PV)))) { |
| 2183 | U32 in = PL_unicode & PERL_UNICODE_IN_FLAG; |
| 2184 | U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG; |
| 2185 | if (in) { |
| 2186 | if (out) |
| 2187 | sv_setpvn(sv, ":utf8\0:utf8", 11); |
| 2188 | else |
| 2189 | sv_setpvn(sv, ":utf8\0", 6); |
| 2190 | } |
| 2191 | else if (out) |
| 2192 | sv_setpvn(sv, "\0:utf8", 6); |
| 2193 | SvSETMAGIC(sv); |
| 2194 | } |
| 2195 | } |
| 2196 | } |
| 2197 | |
| 2198 | if ((s = PerlEnv_getenv("PERL_SIGNALS"))) { |
| 2199 | if (strEQ(s, "unsafe")) |
| 2200 | PL_signals |= PERL_SIGNALS_UNSAFE_FLAG; |
| 2201 | else if (strEQ(s, "safe")) |
| 2202 | PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG; |
| 2203 | else |
| 2204 | Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s); |
| 2205 | } |
| 2206 | |
| 2207 | #ifdef PERL_MAD |
| 2208 | if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) { |
| 2209 | PL_madskills = 1; |
| 2210 | PL_minus_c = 1; |
| 2211 | if (!s || !s[0]) |
| 2212 | PL_xmlfp = PerlIO_stdout(); |
| 2213 | else { |
| 2214 | PL_xmlfp = PerlIO_open(s, "w"); |
| 2215 | if (!PL_xmlfp) |
| 2216 | Perl_croak(aTHX_ "Can't open %s", s); |
| 2217 | } |
| 2218 | my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */ |
| 2219 | } |
| 2220 | if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) { |
| 2221 | PL_madskills = atoi(s); |
| 2222 | my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */ |
| 2223 | } |
| 2224 | #endif |
| 2225 | |
| 2226 | init_lexer(); |
| 2227 | |
| 2228 | /* now parse the script */ |
| 2229 | |
| 2230 | SETERRNO(0,SS_NORMAL); |
| 2231 | PL_error_count = 0; |
| 2232 | #ifdef MACOS_TRADITIONAL |
| 2233 | if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) { |
| 2234 | if (PL_minus_c) |
| 2235 | Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename)); |
| 2236 | else { |
| 2237 | Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", |
| 2238 | MacPerl_MPWFileName(PL_origfilename)); |
| 2239 | } |
| 2240 | } |
| 2241 | #else |
| 2242 | if (yyparse() || PL_error_count) { |
| 2243 | if (PL_minus_c) |
| 2244 | Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename); |
| 2245 | else { |
| 2246 | Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n", |
| 2247 | PL_origfilename); |
| 2248 | } |
| 2249 | } |
| 2250 | #endif |
| 2251 | CopLINE_set(PL_curcop, 0); |
| 2252 | PL_curstash = PL_defstash; |
| 2253 | PL_preprocess = FALSE; |
| 2254 | if (PL_e_script) { |
| 2255 | SvREFCNT_dec(PL_e_script); |
| 2256 | PL_e_script = NULL; |
| 2257 | } |
| 2258 | |
| 2259 | if (PL_do_undump) |
| 2260 | my_unexec(); |
| 2261 | |
| 2262 | if (isWARN_ONCE) { |
| 2263 | SAVECOPFILE(PL_curcop); |
| 2264 | SAVECOPLINE(PL_curcop); |
| 2265 | gv_check(PL_defstash); |
| 2266 | } |
| 2267 | |
| 2268 | LEAVE; |
| 2269 | FREETMPS; |
| 2270 | |
| 2271 | #ifdef MYMALLOC |
| 2272 | if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) |
| 2273 | dump_mstats("after compilation:"); |
| 2274 | #endif |
| 2275 | |
| 2276 | ENTER; |
| 2277 | PL_restartop = 0; |
| 2278 | return NULL; |
| 2279 | } |
| 2280 | |
| 2281 | /* |
| 2282 | =for apidoc perl_run |
| 2283 | |
| 2284 | Tells a Perl interpreter to run. See L<perlembed>. |
| 2285 | |
| 2286 | =cut |
| 2287 | */ |
| 2288 | |
| 2289 | int |
| 2290 | perl_run(pTHXx) |
| 2291 | { |
| 2292 | dVAR; |
| 2293 | I32 oldscope; |
| 2294 | int ret = 0; |
| 2295 | dJMPENV; |
| 2296 | |
| 2297 | PERL_UNUSED_CONTEXT; |
| 2298 | |
| 2299 | oldscope = PL_scopestack_ix; |
| 2300 | #ifdef VMS |
| 2301 | VMSISH_HUSHED = 0; |
| 2302 | #endif |
| 2303 | |
| 2304 | JMPENV_PUSH(ret); |
| 2305 | switch (ret) { |
| 2306 | case 1: |
| 2307 | cxstack_ix = -1; /* start context stack again */ |
| 2308 | goto redo_body; |
| 2309 | case 0: /* normal completion */ |
| 2310 | redo_body: |
| 2311 | run_body(oldscope); |
| 2312 | /* FALL THROUGH */ |
| 2313 | case 2: /* my_exit() */ |
| 2314 | while (PL_scopestack_ix > oldscope) |
| 2315 | LEAVE; |
| 2316 | FREETMPS; |
| 2317 | PL_curstash = PL_defstash; |
| 2318 | if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) && |
| 2319 | PL_endav && !PL_minus_c) |
| 2320 | call_list(oldscope, PL_endav); |
| 2321 | #ifdef MYMALLOC |
| 2322 | if (PerlEnv_getenv("PERL_DEBUG_MSTATS")) |
| 2323 | dump_mstats("after execution: "); |
| 2324 | #endif |
| 2325 | ret = STATUS_EXIT; |
| 2326 | break; |
| 2327 | case 3: |
| 2328 | if (PL_restartop) { |
| 2329 | POPSTACK_TO(PL_mainstack); |
| 2330 | goto redo_body; |
| 2331 | } |
| 2332 | PerlIO_printf(Perl_error_log, "panic: restartop\n"); |
| 2333 | FREETMPS; |
| 2334 | ret = 1; |
| 2335 | break; |
| 2336 | } |
| 2337 | |
| 2338 | JMPENV_POP; |
| 2339 | return ret; |
| 2340 | } |
| 2341 | |
| 2342 | |
| 2343 | STATIC void |
| 2344 | S_run_body(pTHX_ I32 oldscope) |
| 2345 | { |
| 2346 | dVAR; |
| 2347 | DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n", |
| 2348 | PL_sawampersand ? "Enabling" : "Omitting")); |
| 2349 | |
| 2350 | if (!PL_restartop) { |
| 2351 | #ifdef PERL_MAD |
| 2352 | if (PL_xmlfp) { |
| 2353 | xmldump_all(); |
| 2354 | exit(0); /* less likely to core dump than my_exit(0) */ |
| 2355 | } |
| 2356 | #endif |
| 2357 | DEBUG_x(dump_all()); |
| 2358 | #ifdef DEBUGGING |
| 2359 | if (!DEBUG_q_TEST) |
| 2360 | PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
| 2361 | #endif |
| 2362 | DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n", |
| 2363 | PTR2UV(thr))); |
| 2364 | |
| 2365 | if (PL_minus_c) { |
| 2366 | #ifdef MACOS_TRADITIONAL |
| 2367 | PerlIO_printf(Perl_error_log, "%s%s syntax OK\n", |
| 2368 | (gMacPerl_ErrorFormat ? "# " : ""), |
| 2369 | MacPerl_MPWFileName(PL_origfilename)); |
| 2370 | #else |
| 2371 | PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename); |
| 2372 | #endif |
| 2373 | my_exit(0); |
| 2374 | } |
| 2375 | if (PERLDB_SINGLE && PL_DBsingle) |
| 2376 | sv_setiv(PL_DBsingle, 1); |
| 2377 | if (PL_initav) |
| 2378 | call_list(oldscope, PL_initav); |
| 2379 | } |
| 2380 | |
| 2381 | /* do it */ |
| 2382 | |
| 2383 | if (PL_restartop) { |
| 2384 | PL_op = PL_restartop; |
| 2385 | PL_restartop = 0; |
| 2386 | CALLRUNOPS(aTHX); |
| 2387 | } |
| 2388 | else if (PL_main_start) { |
| 2389 | CvDEPTH(PL_main_cv) = 1; |
| 2390 | PL_op = PL_main_start; |
| 2391 | CALLRUNOPS(aTHX); |
| 2392 | } |
| 2393 | my_exit(0); |
| 2394 | /* NOTREACHED */ |
| 2395 | } |
| 2396 | |
| 2397 | /* |
| 2398 | =head1 SV Manipulation Functions |
| 2399 | |
| 2400 | =for apidoc p||get_sv |
| 2401 | |
| 2402 | Returns the SV of the specified Perl scalar. If C<create> is set and the |
| 2403 | Perl variable does not exist then it will be created. If C<create> is not |
| 2404 | set and the variable does not exist then NULL is returned. |
| 2405 | |
| 2406 | =cut |
| 2407 | */ |
| 2408 | |
| 2409 | SV* |
| 2410 | Perl_get_sv(pTHX_ const char *name, I32 create) |
| 2411 | { |
| 2412 | GV *gv; |
| 2413 | gv = gv_fetchpv(name, create, SVt_PV); |
| 2414 | if (gv) |
| 2415 | return GvSV(gv); |
| 2416 | return NULL; |
| 2417 | } |
| 2418 | |
| 2419 | /* |
| 2420 | =head1 Array Manipulation Functions |
| 2421 | |
| 2422 | =for apidoc p||get_av |
| 2423 | |
| 2424 | Returns the AV of the specified Perl array. If C<create> is set and the |
| 2425 | Perl variable does not exist then it will be created. If C<create> is not |
| 2426 | set and the variable does not exist then NULL is returned. |
| 2427 | |
| 2428 | =cut |
| 2429 | */ |
| 2430 | |
| 2431 | AV* |
| 2432 | Perl_get_av(pTHX_ const char *name, I32 create) |
| 2433 | { |
| 2434 | GV* const gv = gv_fetchpv(name, create, SVt_PVAV); |
| 2435 | if (create) |
| 2436 | return GvAVn(gv); |
| 2437 | if (gv) |
| 2438 | return GvAV(gv); |
| 2439 | return NULL; |
| 2440 | } |
| 2441 | |
| 2442 | /* |
| 2443 | =head1 Hash Manipulation Functions |
| 2444 | |
| 2445 | =for apidoc p||get_hv |
| 2446 | |
| 2447 | Returns the HV of the specified Perl hash. If C<create> is set and the |
| 2448 | Perl variable does not exist then it will be created. If C<create> is not |
| 2449 | set and the variable does not exist then NULL is returned. |
| 2450 | |
| 2451 | =cut |
| 2452 | */ |
| 2453 | |
| 2454 | HV* |
| 2455 | Perl_get_hv(pTHX_ const char *name, I32 create) |
| 2456 | { |
| 2457 | GV* const gv = gv_fetchpv(name, create, SVt_PVHV); |
| 2458 | if (create) |
| 2459 | return GvHVn(gv); |
| 2460 | if (gv) |
| 2461 | return GvHV(gv); |
| 2462 | return NULL; |
| 2463 | } |
| 2464 | |
| 2465 | /* |
| 2466 | =head1 CV Manipulation Functions |
| 2467 | |
| 2468 | =for apidoc p||get_cv |
| 2469 | |
| 2470 | Returns the CV of the specified Perl subroutine. If C<create> is set and |
| 2471 | the Perl subroutine does not exist then it will be declared (which has the |
| 2472 | same effect as saying C<sub name;>). If C<create> is not set and the |
| 2473 | subroutine does not exist then NULL is returned. |
| 2474 | |
| 2475 | =cut |
| 2476 | */ |
| 2477 | |
| 2478 | CV* |
| 2479 | Perl_get_cv(pTHX_ const char *name, I32 create) |
| 2480 | { |
| 2481 | GV* const gv = gv_fetchpv(name, create, SVt_PVCV); |
| 2482 | /* XXX unsafe for threads if eval_owner isn't held */ |
| 2483 | /* XXX this is probably not what they think they're getting. |
| 2484 | * It has the same effect as "sub name;", i.e. just a forward |
| 2485 | * declaration! */ |
| 2486 | if (create && !GvCVu(gv)) |
| 2487 | return newSUB(start_subparse(FALSE, 0), |
| 2488 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
| 2489 | NULL, NULL); |
| 2490 | if (gv) |
| 2491 | return GvCVu(gv); |
| 2492 | return NULL; |
| 2493 | } |
| 2494 | |
| 2495 | /* Be sure to refetch the stack pointer after calling these routines. */ |
| 2496 | |
| 2497 | /* |
| 2498 | |
| 2499 | =head1 Callback Functions |
| 2500 | |
| 2501 | =for apidoc p||call_argv |
| 2502 | |
| 2503 | Performs a callback to the specified Perl sub. See L<perlcall>. |
| 2504 | |
| 2505 | =cut |
| 2506 | */ |
| 2507 | |
| 2508 | I32 |
| 2509 | Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv) |
| 2510 | |
| 2511 | /* See G_* flags in cop.h */ |
| 2512 | /* null terminated arg list */ |
| 2513 | { |
| 2514 | dVAR; |
| 2515 | dSP; |
| 2516 | |
| 2517 | PUSHMARK(SP); |
| 2518 | if (argv) { |
| 2519 | while (*argv) { |
| 2520 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
| 2521 | argv++; |
| 2522 | } |
| 2523 | PUTBACK; |
| 2524 | } |
| 2525 | return call_pv(sub_name, flags); |
| 2526 | } |
| 2527 | |
| 2528 | /* |
| 2529 | =for apidoc p||call_pv |
| 2530 | |
| 2531 | Performs a callback to the specified Perl sub. See L<perlcall>. |
| 2532 | |
| 2533 | =cut |
| 2534 | */ |
| 2535 | |
| 2536 | I32 |
| 2537 | Perl_call_pv(pTHX_ const char *sub_name, I32 flags) |
| 2538 | /* name of the subroutine */ |
| 2539 | /* See G_* flags in cop.h */ |
| 2540 | { |
| 2541 | return call_sv((SV*)get_cv(sub_name, TRUE), flags); |
| 2542 | } |
| 2543 | |
| 2544 | /* |
| 2545 | =for apidoc p||call_method |
| 2546 | |
| 2547 | Performs a callback to the specified Perl method. The blessed object must |
| 2548 | be on the stack. See L<perlcall>. |
| 2549 | |
| 2550 | =cut |
| 2551 | */ |
| 2552 | |
| 2553 | I32 |
| 2554 | Perl_call_method(pTHX_ const char *methname, I32 flags) |
| 2555 | /* name of the subroutine */ |
| 2556 | /* See G_* flags in cop.h */ |
| 2557 | { |
| 2558 | return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD); |
| 2559 | } |
| 2560 | |
| 2561 | /* May be called with any of a CV, a GV, or an SV containing the name. */ |
| 2562 | /* |
| 2563 | =for apidoc p||call_sv |
| 2564 | |
| 2565 | Performs a callback to the Perl sub whose name is in the SV. See |
| 2566 | L<perlcall>. |
| 2567 | |
| 2568 | =cut |
| 2569 | */ |
| 2570 | |
| 2571 | I32 |
| 2572 | Perl_call_sv(pTHX_ SV *sv, I32 flags) |
| 2573 | /* See G_* flags in cop.h */ |
| 2574 | { |
| 2575 | dVAR; dSP; |
| 2576 | LOGOP myop; /* fake syntax tree node */ |
| 2577 | UNOP method_op; |
| 2578 | I32 oldmark; |
| 2579 | volatile I32 retval = 0; |
| 2580 | I32 oldscope; |
| 2581 | bool oldcatch = CATCH_GET; |
| 2582 | int ret; |
| 2583 | OP* const oldop = PL_op; |
| 2584 | dJMPENV; |
| 2585 | |
| 2586 | if (flags & G_DISCARD) { |
| 2587 | ENTER; |
| 2588 | SAVETMPS; |
| 2589 | } |
| 2590 | |
| 2591 | Zero(&myop, 1, LOGOP); |
| 2592 | myop.op_next = NULL; |
| 2593 | if (!(flags & G_NOARGS)) |
| 2594 | myop.op_flags |= OPf_STACKED; |
| 2595 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 2596 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 2597 | OPf_WANT_SCALAR); |
| 2598 | SAVEOP(); |
| 2599 | PL_op = (OP*)&myop; |
| 2600 | |
| 2601 | EXTEND(PL_stack_sp, 1); |
| 2602 | *++PL_stack_sp = sv; |
| 2603 | oldmark = TOPMARK; |
| 2604 | oldscope = PL_scopestack_ix; |
| 2605 | |
| 2606 | if (PERLDB_SUB && PL_curstash != PL_debstash |
| 2607 | /* Handle first BEGIN of -d. */ |
| 2608 | && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub))) |
| 2609 | /* Try harder, since this may have been a sighandler, thus |
| 2610 | * curstash may be meaningless. */ |
| 2611 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash) |
| 2612 | && !(flags & G_NODEBUG)) |
| 2613 | PL_op->op_private |= OPpENTERSUB_DB; |
| 2614 | |
| 2615 | if (flags & G_METHOD) { |
| 2616 | Zero(&method_op, 1, UNOP); |
| 2617 | method_op.op_next = PL_op; |
| 2618 | method_op.op_ppaddr = PL_ppaddr[OP_METHOD]; |
| 2619 | myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB]; |
| 2620 | PL_op = (OP*)&method_op; |
| 2621 | } |
| 2622 | |
| 2623 | if (!(flags & G_EVAL)) { |
| 2624 | CATCH_SET(TRUE); |
| 2625 | CALL_BODY_SUB((OP*)&myop); |
| 2626 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 2627 | CATCH_SET(oldcatch); |
| 2628 | } |
| 2629 | else { |
| 2630 | myop.op_other = (OP*)&myop; |
| 2631 | PL_markstack_ptr--; |
| 2632 | create_eval_scope(flags|G_FAKINGEVAL); |
| 2633 | PL_markstack_ptr++; |
| 2634 | |
| 2635 | JMPENV_PUSH(ret); |
| 2636 | |
| 2637 | switch (ret) { |
| 2638 | case 0: |
| 2639 | redo_body: |
| 2640 | CALL_BODY_SUB((OP*)&myop); |
| 2641 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 2642 | if (!(flags & G_KEEPERR)) |
| 2643 | sv_setpvn(ERRSV,"",0); |
| 2644 | break; |
| 2645 | case 1: |
| 2646 | STATUS_ALL_FAILURE; |
| 2647 | /* FALL THROUGH */ |
| 2648 | case 2: |
| 2649 | /* my_exit() was called */ |
| 2650 | PL_curstash = PL_defstash; |
| 2651 | FREETMPS; |
| 2652 | JMPENV_POP; |
| 2653 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) |
| 2654 | Perl_croak(aTHX_ "Callback called exit"); |
| 2655 | my_exit_jump(); |
| 2656 | /* NOTREACHED */ |
| 2657 | case 3: |
| 2658 | if (PL_restartop) { |
| 2659 | PL_op = PL_restartop; |
| 2660 | PL_restartop = 0; |
| 2661 | goto redo_body; |
| 2662 | } |
| 2663 | PL_stack_sp = PL_stack_base + oldmark; |
| 2664 | if (flags & G_ARRAY) |
| 2665 | retval = 0; |
| 2666 | else { |
| 2667 | retval = 1; |
| 2668 | *++PL_stack_sp = &PL_sv_undef; |
| 2669 | } |
| 2670 | break; |
| 2671 | } |
| 2672 | |
| 2673 | if (PL_scopestack_ix > oldscope) |
| 2674 | delete_eval_scope(); |
| 2675 | JMPENV_POP; |
| 2676 | } |
| 2677 | |
| 2678 | if (flags & G_DISCARD) { |
| 2679 | PL_stack_sp = PL_stack_base + oldmark; |
| 2680 | retval = 0; |
| 2681 | FREETMPS; |
| 2682 | LEAVE; |
| 2683 | } |
| 2684 | PL_op = oldop; |
| 2685 | return retval; |
| 2686 | } |
| 2687 | |
| 2688 | /* Eval a string. The G_EVAL flag is always assumed. */ |
| 2689 | |
| 2690 | /* |
| 2691 | =for apidoc p||eval_sv |
| 2692 | |
| 2693 | Tells Perl to C<eval> the string in the SV. |
| 2694 | |
| 2695 | =cut |
| 2696 | */ |
| 2697 | |
| 2698 | I32 |
| 2699 | Perl_eval_sv(pTHX_ SV *sv, I32 flags) |
| 2700 | |
| 2701 | /* See G_* flags in cop.h */ |
| 2702 | { |
| 2703 | dVAR; |
| 2704 | dSP; |
| 2705 | UNOP myop; /* fake syntax tree node */ |
| 2706 | volatile I32 oldmark = SP - PL_stack_base; |
| 2707 | volatile I32 retval = 0; |
| 2708 | int ret; |
| 2709 | OP* const oldop = PL_op; |
| 2710 | dJMPENV; |
| 2711 | |
| 2712 | if (flags & G_DISCARD) { |
| 2713 | ENTER; |
| 2714 | SAVETMPS; |
| 2715 | } |
| 2716 | |
| 2717 | SAVEOP(); |
| 2718 | PL_op = (OP*)&myop; |
| 2719 | Zero(PL_op, 1, UNOP); |
| 2720 | EXTEND(PL_stack_sp, 1); |
| 2721 | *++PL_stack_sp = sv; |
| 2722 | |
| 2723 | if (!(flags & G_NOARGS)) |
| 2724 | myop.op_flags = OPf_STACKED; |
| 2725 | myop.op_next = NULL; |
| 2726 | myop.op_type = OP_ENTEREVAL; |
| 2727 | myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : |
| 2728 | (flags & G_ARRAY) ? OPf_WANT_LIST : |
| 2729 | OPf_WANT_SCALAR); |
| 2730 | if (flags & G_KEEPERR) |
| 2731 | myop.op_flags |= OPf_SPECIAL; |
| 2732 | |
| 2733 | /* fail now; otherwise we could fail after the JMPENV_PUSH but |
| 2734 | * before a PUSHEVAL, which corrupts the stack after a croak */ |
| 2735 | TAINT_PROPER("eval_sv()"); |
| 2736 | |
| 2737 | JMPENV_PUSH(ret); |
| 2738 | switch (ret) { |
| 2739 | case 0: |
| 2740 | redo_body: |
| 2741 | CALL_BODY_EVAL((OP*)&myop); |
| 2742 | retval = PL_stack_sp - (PL_stack_base + oldmark); |
| 2743 | if (!(flags & G_KEEPERR)) |
| 2744 | sv_setpvn(ERRSV,"",0); |
| 2745 | break; |
| 2746 | case 1: |
| 2747 | STATUS_ALL_FAILURE; |
| 2748 | /* FALL THROUGH */ |
| 2749 | case 2: |
| 2750 | /* my_exit() was called */ |
| 2751 | PL_curstash = PL_defstash; |
| 2752 | FREETMPS; |
| 2753 | JMPENV_POP; |
| 2754 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) |
| 2755 | Perl_croak(aTHX_ "Callback called exit"); |
| 2756 | my_exit_jump(); |
| 2757 | /* NOTREACHED */ |
| 2758 | case 3: |
| 2759 | if (PL_restartop) { |
| 2760 | PL_op = PL_restartop; |
| 2761 | PL_restartop = 0; |
| 2762 | goto redo_body; |
| 2763 | } |
| 2764 | PL_stack_sp = PL_stack_base + oldmark; |
| 2765 | if (flags & G_ARRAY) |
| 2766 | retval = 0; |
| 2767 | else { |
| 2768 | retval = 1; |
| 2769 | *++PL_stack_sp = &PL_sv_undef; |
| 2770 | } |
| 2771 | break; |
| 2772 | } |
| 2773 | |
| 2774 | JMPENV_POP; |
| 2775 | if (flags & G_DISCARD) { |
| 2776 | PL_stack_sp = PL_stack_base + oldmark; |
| 2777 | retval = 0; |
| 2778 | FREETMPS; |
| 2779 | LEAVE; |
| 2780 | } |
| 2781 | PL_op = oldop; |
| 2782 | return retval; |
| 2783 | } |
| 2784 | |
| 2785 | /* |
| 2786 | =for apidoc p||eval_pv |
| 2787 | |
| 2788 | Tells Perl to C<eval> the given string and return an SV* result. |
| 2789 | |
| 2790 | =cut |
| 2791 | */ |
| 2792 | |
| 2793 | SV* |
| 2794 | Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error) |
| 2795 | { |
| 2796 | dVAR; |
| 2797 | dSP; |
| 2798 | SV* sv = newSVpv(p, 0); |
| 2799 | |
| 2800 | eval_sv(sv, G_SCALAR); |
| 2801 | SvREFCNT_dec(sv); |
| 2802 | |
| 2803 | SPAGAIN; |
| 2804 | sv = POPs; |
| 2805 | PUTBACK; |
| 2806 | |
| 2807 | if (croak_on_error && SvTRUE(ERRSV)) { |
| 2808 | Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV)); |
| 2809 | } |
| 2810 | |
| 2811 | return sv; |
| 2812 | } |
| 2813 | |
| 2814 | /* Require a module. */ |
| 2815 | |
| 2816 | /* |
| 2817 | =head1 Embedding Functions |
| 2818 | |
| 2819 | =for apidoc p||require_pv |
| 2820 | |
| 2821 | Tells Perl to C<require> the file named by the string argument. It is |
| 2822 | analogous to the Perl code C<eval "require '$file'">. It's even |
| 2823 | implemented that way; consider using load_module instead. |
| 2824 | |
| 2825 | =cut */ |
| 2826 | |
| 2827 | void |
| 2828 | Perl_require_pv(pTHX_ const char *pv) |
| 2829 | { |
| 2830 | dVAR; |
| 2831 | dSP; |
| 2832 | SV* sv; |
| 2833 | PUSHSTACKi(PERLSI_REQUIRE); |
| 2834 | PUTBACK; |
| 2835 | sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0); |
| 2836 | eval_sv(sv_2mortal(sv), G_DISCARD); |
| 2837 | SPAGAIN; |
| 2838 | POPSTACK; |
| 2839 | } |
| 2840 | |
| 2841 | void |
| 2842 | Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen) |
| 2843 | { |
| 2844 | register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV); |
| 2845 | |
| 2846 | if (gv) |
| 2847 | sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen); |
| 2848 | } |
| 2849 | |
| 2850 | STATIC void |
| 2851 | S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */ |
| 2852 | { |
| 2853 | /* This message really ought to be max 23 lines. |
| 2854 | * Removed -h because the user already knows that option. Others? */ |
| 2855 | |
| 2856 | static const char * const usage_msg[] = { |
| 2857 | "-0[octal] specify record separator (\\0, if no argument)", |
| 2858 | "-A[mod][=pattern] activate all/given assertions", |
| 2859 | "-a autosplit mode with -n or -p (splits $_ into @F)", |
| 2860 | "-C[number/list] enables the listed Unicode features", |
| 2861 | "-c check syntax only (runs BEGIN and CHECK blocks)", |
| 2862 | "-d[:debugger] run program under debugger", |
| 2863 | "-D[number/list] set debugging flags (argument is a bit mask or alphabets)", |
| 2864 | "-e program one line of program (several -e's allowed, omit programfile)", |
| 2865 | "-E program like -e, but enables all optional features", |
| 2866 | "-f don't do $sitelib/sitecustomize.pl at startup", |
| 2867 | "-F/pattern/ split() pattern for -a switch (//'s are optional)", |
| 2868 | "-i[extension] edit <> files in place (makes backup if extension supplied)", |
| 2869 | "-Idirectory specify @INC/#include directory (several -I's allowed)", |
| 2870 | "-l[octal] enable line ending processing, specifies line terminator", |
| 2871 | "-[mM][-]module execute \"use/no module...\" before executing program", |
| 2872 | "-n assume \"while (<>) { ... }\" loop around program", |
| 2873 | "-p assume loop like -n but print line also, like sed", |
| 2874 | "-P run program through C preprocessor before compilation", |
| 2875 | "-s enable rudimentary parsing for switches after programfile", |
| 2876 | "-S look for programfile using PATH environment variable", |
| 2877 | "-t enable tainting warnings", |
| 2878 | "-T enable tainting checks", |
| 2879 | "-u dump core after parsing program", |
| 2880 | "-U allow unsafe operations", |
| 2881 | "-v print version, subversion (includes VERY IMPORTANT perl info)", |
| 2882 | "-V[:variable] print configuration summary (or a single Config.pm variable)", |
| 2883 | "-w enable many useful warnings (RECOMMENDED)", |
| 2884 | "-W enable all warnings", |
| 2885 | "-x[directory] strip off text before #!perl line and perhaps cd to directory", |
| 2886 | "-X disable all warnings", |
| 2887 | "\n", |
| 2888 | NULL |
| 2889 | }; |
| 2890 | const char * const *p = usage_msg; |
| 2891 | |
| 2892 | PerlIO_printf(PerlIO_stdout(), |
| 2893 | "\nUsage: %s [switches] [--] [programfile] [arguments]", |
| 2894 | name); |
| 2895 | while (*p) |
| 2896 | PerlIO_printf(PerlIO_stdout(), "\n %s", *p++); |
| 2897 | } |
| 2898 | |
| 2899 | /* convert a string of -D options (or digits) into an int. |
| 2900 | * sets *s to point to the char after the options */ |
| 2901 | |
| 2902 | #ifdef DEBUGGING |
| 2903 | int |
| 2904 | Perl_get_debug_opts(pTHX_ const char **s, bool givehelp) |
| 2905 | { |
| 2906 | static const char * const usage_msgd[] = { |
| 2907 | " Debugging flag values: (see also -d)", |
| 2908 | " p Tokenizing and parsing (with v, displays parse stack)", |
| 2909 | " s Stack snapshots (with v, displays all stacks)", |
| 2910 | " l Context (loop) stack processing", |
| 2911 | " t Trace execution", |
| 2912 | " o Method and overloading resolution", |
| 2913 | " c String/numeric conversions", |
| 2914 | " P Print profiling info, preprocessor command for -P, source file input state", |
| 2915 | " m Memory allocation", |
| 2916 | " f Format processing", |
| 2917 | " r Regular expression parsing and execution", |
| 2918 | " x Syntax tree dump", |
| 2919 | " u Tainting checks", |
| 2920 | " H Hash dump -- usurps values()", |
| 2921 | " X Scratchpad allocation", |
| 2922 | " D Cleaning up", |
| 2923 | " S Thread synchronization", |
| 2924 | " T Tokenising", |
| 2925 | " R Include reference counts of dumped variables (eg when using -Ds)", |
| 2926 | " J Do not s,t,P-debug (Jump over) opcodes within package DB", |
| 2927 | " v Verbose: use in conjunction with other flags", |
| 2928 | " C Copy On Write", |
| 2929 | " A Consistency checks on internal structures", |
| 2930 | " q quiet - currently only suppresses the 'EXECUTING' message", |
| 2931 | NULL |
| 2932 | }; |
| 2933 | int i = 0; |
| 2934 | if (isALPHA(**s)) { |
| 2935 | /* if adding extra options, remember to update DEBUG_MASK */ |
| 2936 | static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq"; |
| 2937 | |
| 2938 | for (; isALNUM(**s); (*s)++) { |
| 2939 | const char * const d = strchr(debopts,**s); |
| 2940 | if (d) |
| 2941 | i |= 1 << (d - debopts); |
| 2942 | else if (ckWARN_d(WARN_DEBUGGING)) |
| 2943 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
| 2944 | "invalid option -D%c, use -D'' to see choices\n", **s); |
| 2945 | } |
| 2946 | } |
| 2947 | else if (isDIGIT(**s)) { |
| 2948 | i = atoi(*s); |
| 2949 | for (; isALNUM(**s); (*s)++) ; |
| 2950 | } |
| 2951 | else if (givehelp) { |
| 2952 | const char *const *p = usage_msgd; |
| 2953 | while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++); |
| 2954 | } |
| 2955 | # ifdef EBCDIC |
| 2956 | if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING)) |
| 2957 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
| 2958 | "-Dp not implemented on this platform\n"); |
| 2959 | # endif |
| 2960 | return i; |
| 2961 | } |
| 2962 | #endif |
| 2963 | |
| 2964 | /* This routine handles any switches that can be given during run */ |
| 2965 | |
| 2966 | char * |
| 2967 | Perl_moreswitches(pTHX_ char *s) |
| 2968 | { |
| 2969 | dVAR; |
| 2970 | UV rschar; |
| 2971 | |
| 2972 | switch (*s) { |
| 2973 | case '0': |
| 2974 | { |
| 2975 | I32 flags = 0; |
| 2976 | STRLEN numlen; |
| 2977 | |
| 2978 | SvREFCNT_dec(PL_rs); |
| 2979 | if (s[1] == 'x' && s[2]) { |
| 2980 | const char *e = s+=2; |
| 2981 | U8 *tmps; |
| 2982 | |
| 2983 | while (*e) |
| 2984 | e++; |
| 2985 | numlen = e - s; |
| 2986 | flags = PERL_SCAN_SILENT_ILLDIGIT; |
| 2987 | rschar = (U32)grok_hex(s, &numlen, &flags, NULL); |
| 2988 | if (s + numlen < e) { |
| 2989 | rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */ |
| 2990 | numlen = 0; |
| 2991 | s--; |
| 2992 | } |
| 2993 | PL_rs = newSVpvs(""); |
| 2994 | SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1)); |
| 2995 | tmps = (U8*)SvPVX(PL_rs); |
| 2996 | uvchr_to_utf8(tmps, rschar); |
| 2997 | SvCUR_set(PL_rs, UNISKIP(rschar)); |
| 2998 | SvUTF8_on(PL_rs); |
| 2999 | } |
| 3000 | else { |
| 3001 | numlen = 4; |
| 3002 | rschar = (U32)grok_oct(s, &numlen, &flags, NULL); |
| 3003 | if (rschar & ~((U8)~0)) |
| 3004 | PL_rs = &PL_sv_undef; |
| 3005 | else if (!rschar && numlen >= 2) |
| 3006 | PL_rs = newSVpvs(""); |
| 3007 | else { |
| 3008 | char ch = (char)rschar; |
| 3009 | PL_rs = newSVpvn(&ch, 1); |
| 3010 | } |
| 3011 | } |
| 3012 | sv_setsv(get_sv("/", TRUE), PL_rs); |
| 3013 | return s + numlen; |
| 3014 | } |
| 3015 | case 'C': |
| 3016 | s++; |
| 3017 | PL_unicode = parse_unicode_opts( (const char **)&s ); |
| 3018 | if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG) |
| 3019 | PL_utf8cache = -1; |
| 3020 | return s; |
| 3021 | case 'F': |
| 3022 | PL_minus_F = TRUE; |
| 3023 | PL_splitstr = ++s; |
| 3024 | while (*s && !isSPACE(*s)) ++s; |
| 3025 | PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr); |
| 3026 | return s; |
| 3027 | case 'a': |
| 3028 | PL_minus_a = TRUE; |
| 3029 | s++; |
| 3030 | return s; |
| 3031 | case 'c': |
| 3032 | PL_minus_c = TRUE; |
| 3033 | s++; |
| 3034 | return s; |
| 3035 | case 'd': |
| 3036 | forbid_setid('d', -1); |
| 3037 | s++; |
| 3038 | |
| 3039 | /* -dt indicates to the debugger that threads will be used */ |
| 3040 | if (*s == 't' && !isALNUM(s[1])) { |
| 3041 | ++s; |
| 3042 | my_setenv("PERL5DB_THREADED", "1"); |
| 3043 | } |
| 3044 | |
| 3045 | /* The following permits -d:Mod to accepts arguments following an = |
| 3046 | in the fashion that -MSome::Mod does. */ |
| 3047 | if (*s == ':' || *s == '=') { |
| 3048 | const char *start; |
| 3049 | SV * const sv = newSVpvs("use Devel::"); |
| 3050 | start = ++s; |
| 3051 | /* We now allow -d:Module=Foo,Bar */ |
| 3052 | while(isALNUM(*s) || *s==':') ++s; |
| 3053 | if (*s != '=') |
| 3054 | sv_catpv(sv, start); |
| 3055 | else { |
| 3056 | sv_catpvn(sv, start, s-start); |
| 3057 | /* Don't use NUL as q// delimiter here, this string goes in the |
| 3058 | * environment. */ |
| 3059 | Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s); |
| 3060 | } |
| 3061 | s += strlen(s); |
| 3062 | my_setenv("PERL5DB", SvPV_nolen_const(sv)); |
| 3063 | } |
| 3064 | if (!PL_perldb) { |
| 3065 | PL_perldb = PERLDB_ALL; |
| 3066 | init_debugger(); |
| 3067 | } |
| 3068 | return s; |
| 3069 | case 'D': |
| 3070 | { |
| 3071 | #ifdef DEBUGGING |
| 3072 | forbid_setid('D', -1); |
| 3073 | s++; |
| 3074 | PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG; |
| 3075 | #else /* !DEBUGGING */ |
| 3076 | if (ckWARN_d(WARN_DEBUGGING)) |
| 3077 | Perl_warner(aTHX_ packWARN(WARN_DEBUGGING), |
| 3078 | "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n"); |
| 3079 | for (s++; isALNUM(*s); s++) ; |
| 3080 | #endif |
| 3081 | return s; |
| 3082 | } |
| 3083 | case 'h': |
| 3084 | usage(PL_origargv[0]); |
| 3085 | my_exit(0); |
| 3086 | case 'i': |
| 3087 | Safefree(PL_inplace); |
| 3088 | #if defined(__CYGWIN__) /* do backup extension automagically */ |
| 3089 | if (*(s+1) == '\0') { |
| 3090 | PL_inplace = savepvs(".bak"); |
| 3091 | return s+1; |
| 3092 | } |
| 3093 | #endif /* __CYGWIN__ */ |
| 3094 | { |
| 3095 | const char * const start = ++s; |
| 3096 | while (*s && !isSPACE(*s)) |
| 3097 | ++s; |
| 3098 | |
| 3099 | PL_inplace = savepvn(start, s - start); |
| 3100 | } |
| 3101 | if (*s) { |
| 3102 | ++s; |
| 3103 | if (*s == '-') /* Additional switches on #! line. */ |
| 3104 | s++; |
| 3105 | } |
| 3106 | return s; |
| 3107 | case 'I': /* -I handled both here and in parse_body() */ |
| 3108 | forbid_setid('I', -1); |
| 3109 | ++s; |
| 3110 | while (*s && isSPACE(*s)) |
| 3111 | ++s; |
| 3112 | if (*s) { |
| 3113 | char *e, *p; |
| 3114 | p = s; |
| 3115 | /* ignore trailing spaces (possibly followed by other switches) */ |
| 3116 | do { |
| 3117 | for (e = p; *e && !isSPACE(*e); e++) ; |
| 3118 | p = e; |
| 3119 | while (isSPACE(*p)) |
| 3120 | p++; |
| 3121 | } while (*p && *p != '-'); |
| 3122 | e = savepvn(s, e-s); |
| 3123 | incpush(e, TRUE, TRUE, FALSE, FALSE); |
| 3124 | Safefree(e); |
| 3125 | s = p; |
| 3126 | if (*s == '-') |
| 3127 | s++; |
| 3128 | } |
| 3129 | else |
| 3130 | Perl_croak(aTHX_ "No directory specified for -I"); |
| 3131 | return s; |
| 3132 | case 'l': |
| 3133 | PL_minus_l = TRUE; |
| 3134 | s++; |
| 3135 | if (PL_ors_sv) { |
| 3136 | SvREFCNT_dec(PL_ors_sv); |
| 3137 | PL_ors_sv = NULL; |
| 3138 | } |
| 3139 | if (isDIGIT(*s)) { |
| 3140 | I32 flags = 0; |
| 3141 | STRLEN numlen; |
| 3142 | PL_ors_sv = newSVpvs("\n"); |
| 3143 | numlen = 3 + (*s == '0'); |
| 3144 | *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL); |
| 3145 | s += numlen; |
| 3146 | } |
| 3147 | else { |
| 3148 | if (RsPARA(PL_rs)) { |
| 3149 | PL_ors_sv = newSVpvs("\n\n"); |
| 3150 | } |
| 3151 | else { |
| 3152 | PL_ors_sv = newSVsv(PL_rs); |
| 3153 | } |
| 3154 | } |
| 3155 | return s; |
| 3156 | case 'A': |
| 3157 | forbid_setid('A', -1); |
| 3158 | if (!PL_preambleav) |
| 3159 | PL_preambleav = newAV(); |
| 3160 | s++; |
| 3161 | { |
| 3162 | char * const start = s; |
| 3163 | SV * const sv = newSVpvs("use assertions::activate"); |
| 3164 | while(isALNUM(*s) || *s == ':') ++s; |
| 3165 | if (s != start) { |
| 3166 | sv_catpvs(sv, "::"); |
| 3167 | sv_catpvn(sv, start, s-start); |
| 3168 | } |
| 3169 | if (*s == '=') { |
| 3170 | Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0); |
| 3171 | s+=strlen(s); |
| 3172 | } |
| 3173 | else if (*s != '\0') { |
| 3174 | Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start); |
| 3175 | } |
| 3176 | av_push(PL_preambleav, sv); |
| 3177 | return s; |
| 3178 | } |
| 3179 | case 'M': |
| 3180 | forbid_setid('M', -1); /* XXX ? */ |
| 3181 | /* FALL THROUGH */ |
| 3182 | case 'm': |
| 3183 | forbid_setid('m', -1); /* XXX ? */ |
| 3184 | if (*++s) { |
| 3185 | char *start; |
| 3186 | SV *sv; |
| 3187 | const char *use = "use "; |
| 3188 | /* -M-foo == 'no foo' */ |
| 3189 | /* Leading space on " no " is deliberate, to make both |
| 3190 | possibilities the same length. */ |
| 3191 | if (*s == '-') { use = " no "; ++s; } |
| 3192 | sv = newSVpvn(use,4); |
| 3193 | start = s; |
| 3194 | /* We allow -M'Module qw(Foo Bar)' */ |
| 3195 | while(isALNUM(*s) || *s==':') ++s; |
| 3196 | if (*s != '=') { |
| 3197 | sv_catpv(sv, start); |
| 3198 | if (*(start-1) == 'm') { |
| 3199 | if (*s != '\0') |
| 3200 | Perl_croak(aTHX_ "Can't use '%c' after -mname", *s); |
| 3201 | sv_catpvs( sv, " ()"); |
| 3202 | } |
| 3203 | } else { |
| 3204 | if (s == start) |
| 3205 | Perl_croak(aTHX_ "Module name required with -%c option", |
| 3206 | s[-1]); |
| 3207 | sv_catpvn(sv, start, s-start); |
| 3208 | sv_catpvs(sv, " split(/,/,q"); |
| 3209 | sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */ |
| 3210 | sv_catpv(sv, ++s); |
| 3211 | sv_catpvs(sv, "\0)"); |
| 3212 | } |
| 3213 | s += strlen(s); |
| 3214 | if (!PL_preambleav) |
| 3215 | PL_preambleav = newAV(); |
| 3216 | av_push(PL_preambleav, sv); |
| 3217 | } |
| 3218 | else |
| 3219 | Perl_croak(aTHX_ "Missing argument to -%c", *(s-1)); |
| 3220 | return s; |
| 3221 | case 'n': |
| 3222 | PL_minus_n = TRUE; |
| 3223 | s++; |
| 3224 | return s; |
| 3225 | case 'p': |
| 3226 | PL_minus_p = TRUE; |
| 3227 | s++; |
| 3228 | return s; |
| 3229 | case 's': |
| 3230 | forbid_setid('s', -1); |
| 3231 | PL_doswitches = TRUE; |
| 3232 | s++; |
| 3233 | return s; |
| 3234 | case 't': |
| 3235 | if (!PL_tainting) |
| 3236 | TOO_LATE_FOR('t'); |
| 3237 | s++; |
| 3238 | return s; |
| 3239 | case 'T': |
| 3240 | if (!PL_tainting) |
| 3241 | TOO_LATE_FOR('T'); |
| 3242 | s++; |
| 3243 | return s; |
| 3244 | case 'u': |
| 3245 | #ifdef MACOS_TRADITIONAL |
| 3246 | Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh"); |
| 3247 | #endif |
| 3248 | PL_do_undump = TRUE; |
| 3249 | s++; |
| 3250 | return s; |
| 3251 | case 'U': |
| 3252 | PL_unsafe = TRUE; |
| 3253 | s++; |
| 3254 | return s; |
| 3255 | case 'v': |
| 3256 | if (!sv_derived_from(PL_patchlevel, "version")) |
| 3257 | upg_version(PL_patchlevel); |
| 3258 | #if !defined(DGUX) |
| 3259 | PerlIO_printf(PerlIO_stdout(), |
| 3260 | Perl_form(aTHX_ "\nThis is perl, %"SVf |
| 3261 | #ifdef PERL_PATCHNUM |
| 3262 | " DEVEL" STRINGIFY(PERL_PATCHNUM) |
| 3263 | #endif |
| 3264 | " built for %s", |
| 3265 | (void*)vstringify(PL_patchlevel), |
| 3266 | ARCHNAME)); |
| 3267 | #else /* DGUX */ |
| 3268 | /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */ |
| 3269 | PerlIO_printf(PerlIO_stdout(), |
| 3270 | Perl_form(aTHX_ "\nThis is perl, %"SVf"\n", |
| 3271 | vstringify(PL_patchlevel))); |
| 3272 | PerlIO_printf(PerlIO_stdout(), |
| 3273 | Perl_form(aTHX_ " built under %s at %s %s\n", |
| 3274 | OSNAME, __DATE__, __TIME__)); |
| 3275 | PerlIO_printf(PerlIO_stdout(), |
| 3276 | Perl_form(aTHX_ " OS Specific Release: %s\n", |
| 3277 | OSVERS)); |
| 3278 | #endif /* !DGUX */ |
| 3279 | |
| 3280 | #if defined(LOCAL_PATCH_COUNT) |
| 3281 | if (LOCAL_PATCH_COUNT > 0) |
| 3282 | PerlIO_printf(PerlIO_stdout(), |
| 3283 | "\n(with %d registered patch%s, " |
| 3284 | "see perl -V for more detail)", |
| 3285 | LOCAL_PATCH_COUNT, |
| 3286 | (LOCAL_PATCH_COUNT!=1) ? "es" : ""); |
| 3287 | #endif |
| 3288 | |
| 3289 | PerlIO_printf(PerlIO_stdout(), |
| 3290 | "\n\nCopyright 1987-2006, Larry Wall\n"); |
| 3291 | #ifdef MACOS_TRADITIONAL |
| 3292 | PerlIO_printf(PerlIO_stdout(), |
| 3293 | "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n" |
| 3294 | "maintained by Chris Nandor\n"); |
| 3295 | #endif |
| 3296 | #ifdef MSDOS |
| 3297 | PerlIO_printf(PerlIO_stdout(), |
| 3298 | "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
| 3299 | #endif |
| 3300 | #ifdef DJGPP |
| 3301 | PerlIO_printf(PerlIO_stdout(), |
| 3302 | "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n" |
| 3303 | "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n"); |
| 3304 | #endif |
| 3305 | #ifdef OS2 |
| 3306 | PerlIO_printf(PerlIO_stdout(), |
| 3307 | "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
| 3308 | "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n"); |
| 3309 | #endif |
| 3310 | #ifdef atarist |
| 3311 | PerlIO_printf(PerlIO_stdout(), |
| 3312 | "atariST series port, ++jrb bammi@cadence.com\n"); |
| 3313 | #endif |
| 3314 | #ifdef __BEOS__ |
| 3315 | PerlIO_printf(PerlIO_stdout(), |
| 3316 | "BeOS port Copyright Tom Spindler, 1997-1999\n"); |
| 3317 | #endif |
| 3318 | #ifdef MPE |
| 3319 | PerlIO_printf(PerlIO_stdout(), |
| 3320 | "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n"); |
| 3321 | #endif |
| 3322 | #ifdef OEMVS |
| 3323 | PerlIO_printf(PerlIO_stdout(), |
| 3324 | "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n"); |
| 3325 | #endif |
| 3326 | #ifdef __VOS__ |
| 3327 | PerlIO_printf(PerlIO_stdout(), |
| 3328 | "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n"); |
| 3329 | #endif |
| 3330 | #ifdef __OPEN_VM |
| 3331 | PerlIO_printf(PerlIO_stdout(), |
| 3332 | "VM/ESA port by Neale Ferguson, 1998-1999\n"); |
| 3333 | #endif |
| 3334 | #ifdef POSIX_BC |
| 3335 | PerlIO_printf(PerlIO_stdout(), |
| 3336 | "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n"); |
| 3337 | #endif |
| 3338 | #ifdef __MINT__ |
| 3339 | PerlIO_printf(PerlIO_stdout(), |
| 3340 | "MiNT port by Guido Flohr, 1997-1999\n"); |
| 3341 | #endif |
| 3342 | #ifdef EPOC |
| 3343 | PerlIO_printf(PerlIO_stdout(), |
| 3344 | "EPOC port by Olaf Flebbe, 1999-2002\n"); |
| 3345 | #endif |
| 3346 | #ifdef UNDER_CE |
| 3347 | PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n"); |
| 3348 | PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n"); |
| 3349 | wce_hitreturn(); |
| 3350 | #endif |
| 3351 | #ifdef __SYMBIAN32__ |
| 3352 | PerlIO_printf(PerlIO_stdout(), |
| 3353 | "Symbian port by Nokia, 2004-2005\n"); |
| 3354 | #endif |
| 3355 | #ifdef BINARY_BUILD_NOTICE |
| 3356 | BINARY_BUILD_NOTICE; |
| 3357 | #endif |
| 3358 | PerlIO_printf(PerlIO_stdout(), |
| 3359 | "\n\ |
| 3360 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
| 3361 | GNU General Public License, which may be found in the Perl 5 source kit.\n\n\ |
| 3362 | Complete documentation for Perl, including FAQ lists, should be found on\n\ |
| 3363 | this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\ |
| 3364 | Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n"); |
| 3365 | my_exit(0); |
| 3366 | case 'w': |
| 3367 | if (! (PL_dowarn & G_WARN_ALL_MASK)) |
| 3368 | PL_dowarn |= G_WARN_ON; |
| 3369 | s++; |
| 3370 | return s; |
| 3371 | case 'W': |
| 3372 | PL_dowarn = G_WARN_ALL_ON|G_WARN_ON; |
| 3373 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 3374 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 3375 | PL_compiling.cop_warnings = pWARN_ALL ; |
| 3376 | s++; |
| 3377 | return s; |
| 3378 | case 'X': |
| 3379 | PL_dowarn = G_WARN_ALL_OFF; |
| 3380 | if (!specialWARN(PL_compiling.cop_warnings)) |
| 3381 | PerlMemShared_free(PL_compiling.cop_warnings); |
| 3382 | PL_compiling.cop_warnings = pWARN_NONE ; |
| 3383 | s++; |
| 3384 | return s; |
| 3385 | case '*': |
| 3386 | case ' ': |
| 3387 | if (s[1] == '-') /* Additional switches on #! line. */ |
| 3388 | return s+2; |
| 3389 | break; |
| 3390 | case '-': |
| 3391 | case 0: |
| 3392 | #if defined(WIN32) || !defined(PERL_STRICT_CR) |
| 3393 | case '\r': |
| 3394 | #endif |
| 3395 | case '\n': |
| 3396 | case '\t': |
| 3397 | break; |
| 3398 | #ifdef ALTERNATE_SHEBANG |
| 3399 | case 'S': /* OS/2 needs -S on "extproc" line. */ |
| 3400 | break; |
| 3401 | #endif |
| 3402 | case 'P': |
| 3403 | if (PL_preprocess) |
| 3404 | return s+1; |
| 3405 | /* FALL THROUGH */ |
| 3406 | default: |
| 3407 | Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s); |
| 3408 | } |
| 3409 | return NULL; |
| 3410 | } |
| 3411 | |
| 3412 | /* compliments of Tom Christiansen */ |
| 3413 | |
| 3414 | /* unexec() can be found in the Gnu emacs distribution */ |
| 3415 | /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */ |
| 3416 | |
| 3417 | void |
| 3418 | Perl_my_unexec(pTHX) |
| 3419 | { |
| 3420 | PERL_UNUSED_CONTEXT; |
| 3421 | #ifdef UNEXEC |
| 3422 | SV * prog = newSVpv(BIN_EXP, 0); |
| 3423 | SV * file = newSVpv(PL_origfilename, 0); |
| 3424 | int status = 1; |
| 3425 | extern int etext; |
| 3426 | |
| 3427 | sv_catpvs(prog, "/perl"); |
| 3428 | sv_catpvs(file, ".perldump"); |
| 3429 | |
| 3430 | unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); |
| 3431 | /* unexec prints msg to stderr in case of failure */ |
| 3432 | PerlProc_exit(status); |
| 3433 | #else |
| 3434 | # ifdef VMS |
| 3435 | # include <lib$routines.h> |
| 3436 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ |
| 3437 | # elif defined(WIN32) || defined(__CYGWIN__) |
| 3438 | Perl_croak(aTHX_ "dump is not supported"); |
| 3439 | # else |
| 3440 | ABORT(); /* for use with undump */ |
| 3441 | # endif |
| 3442 | #endif |
| 3443 | } |
| 3444 | |
| 3445 | /* initialize curinterp */ |
| 3446 | STATIC void |
| 3447 | S_init_interp(pTHX) |
| 3448 | { |
| 3449 | dVAR; |
| 3450 | #ifdef MULTIPLICITY |
| 3451 | # define PERLVAR(var,type) |
| 3452 | # define PERLVARA(var,n,type) |
| 3453 | # if defined(PERL_IMPLICIT_CONTEXT) |
| 3454 | # define PERLVARI(var,type,init) aTHX->var = init; |
| 3455 | # define PERLVARIC(var,type,init) aTHX->var = init; |
| 3456 | # else |
| 3457 | # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init; |
| 3458 | # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init; |
| 3459 | # endif |
| 3460 | # include "intrpvar.h" |
| 3461 | # include "thrdvar.h" |
| 3462 | # undef PERLVAR |
| 3463 | # undef PERLVARA |
| 3464 | # undef PERLVARI |
| 3465 | # undef PERLVARIC |
| 3466 | #else |
| 3467 | # define PERLVAR(var,type) |
| 3468 | # define PERLVARA(var,n,type) |
| 3469 | # define PERLVARI(var,type,init) PL_##var = init; |
| 3470 | # define PERLVARIC(var,type,init) PL_##var = init; |
| 3471 | # include "intrpvar.h" |
| 3472 | # include "thrdvar.h" |
| 3473 | # undef PERLVAR |
| 3474 | # undef PERLVARA |
| 3475 | # undef PERLVARI |
| 3476 | # undef PERLVARIC |
| 3477 | #endif |
| 3478 | |
| 3479 | /* As these are inside a structure, PERLVARI isn't capable of initialising |
| 3480 | them */ |
| 3481 | PL_regindent = 0; |
| 3482 | PL_reg_oldcurpm = PL_reg_curpm = NULL; |
| 3483 | PL_reg_poscache = PL_reg_starttry = NULL; |
| 3484 | } |
| 3485 | |
| 3486 | STATIC void |
| 3487 | S_init_main_stash(pTHX) |
| 3488 | { |
| 3489 | dVAR; |
| 3490 | GV *gv; |
| 3491 | |
| 3492 | PL_curstash = PL_defstash = newHV(); |
| 3493 | /* We know that the string "main" will be in the global shared string |
| 3494 | table, so it's a small saving to use it rather than allocate another |
| 3495 | 8 bytes. */ |
| 3496 | PL_curstname = newSVpvs_share("main"); |
| 3497 | gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV); |
| 3498 | /* If we hadn't caused another reference to "main" to be in the shared |
| 3499 | string table above, then it would be worth reordering these two, |
| 3500 | because otherwise all we do is delete "main" from it as a consequence |
| 3501 | of the SvREFCNT_dec, only to add it again with hv_name_set */ |
| 3502 | SvREFCNT_dec(GvHV(gv)); |
| 3503 | hv_name_set(PL_defstash, "main", 4, 0); |
| 3504 | GvHV(gv) = (HV*)SvREFCNT_inc_simple(PL_defstash); |
| 3505 | SvREADONLY_on(gv); |
| 3506 | PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL, |
| 3507 | SVt_PVAV))); |
| 3508 | SvREFCNT_inc_simple(PL_incgv); /* Don't allow it to be freed */ |
| 3509 | GvMULTI_on(PL_incgv); |
| 3510 | PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */ |
| 3511 | GvMULTI_on(PL_hintgv); |
| 3512 | PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV); |
| 3513 | SvREFCNT_inc_simple(PL_defgv); |
| 3514 | PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV)); |
| 3515 | SvREFCNT_inc_simple(PL_errgv); |
| 3516 | GvMULTI_on(PL_errgv); |
| 3517 | PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */ |
| 3518 | GvMULTI_on(PL_replgv); |
| 3519 | (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */ |
| 3520 | #ifdef PERL_DONT_CREATE_GVSV |
| 3521 | gv_SVadd(PL_errgv); |
| 3522 | #endif |
| 3523 | sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */ |
| 3524 | sv_setpvn(ERRSV, "", 0); |
| 3525 | PL_curstash = PL_defstash; |
| 3526 | CopSTASH_set(&PL_compiling, PL_defstash); |
| 3527 | PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV)); |
| 3528 | PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI, |
| 3529 | SVt_PVHV)); |
| 3530 | /* We must init $/ before switches are processed. */ |
| 3531 | sv_setpvn(get_sv("/", TRUE), "\n", 1); |
| 3532 | } |
| 3533 | |
| 3534 | STATIC int |
| 3535 | S_open_script(pTHX_ const char *scriptname, bool dosearch, SV *sv, |
| 3536 | int *suidscript) |
| 3537 | { |
| 3538 | #ifndef IAMSUID |
| 3539 | const char *quote; |
| 3540 | const char *code; |
| 3541 | const char *cpp_discard_flag; |
| 3542 | const char *perl; |
| 3543 | #endif |
| 3544 | int fdscript = -1; |
| 3545 | dVAR; |
| 3546 | |
| 3547 | *suidscript = -1; |
| 3548 | |
| 3549 | if (PL_e_script) { |
| 3550 | PL_origfilename = savepvs("-e"); |
| 3551 | } |
| 3552 | else { |
| 3553 | /* if find_script() returns, it returns a malloc()-ed value */ |
| 3554 | scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1); |
| 3555 | |
| 3556 | if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { |
| 3557 | const char *s = scriptname + 8; |
| 3558 | fdscript = atoi(s); |
| 3559 | while (isDIGIT(*s)) |
| 3560 | s++; |
| 3561 | if (*s) { |
| 3562 | /* PSz 18 Feb 04 |
| 3563 | * Tell apart "normal" usage of fdscript, e.g. |
| 3564 | * with bash on FreeBSD: |
| 3565 | * perl <( echo '#!perl -DA'; echo 'print "$0\n"') |
| 3566 | * from usage in suidperl. |
| 3567 | * Does any "normal" usage leave garbage after the number??? |
| 3568 | * Is it a mistake to use a similar /dev/fd/ construct for |
| 3569 | * suidperl? |
| 3570 | */ |
| 3571 | *suidscript = 1; |
| 3572 | /* PSz 20 Feb 04 |
| 3573 | * Be supersafe and do some sanity-checks. |
| 3574 | * Still, can we be sure we got the right thing? |
| 3575 | */ |
| 3576 | if (*s != '/') { |
| 3577 | Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s); |
| 3578 | } |
| 3579 | if (! *(s+1)) { |
| 3580 | Perl_croak(aTHX_ "Missing (suid) fd script name\n"); |
| 3581 | } |
| 3582 | scriptname = savepv(s + 1); |
| 3583 | Safefree(PL_origfilename); |
| 3584 | PL_origfilename = (char *)scriptname; |
| 3585 | } |
| 3586 | } |
| 3587 | } |
| 3588 | |
| 3589 | CopFILE_free(PL_curcop); |
| 3590 | CopFILE_set(PL_curcop, PL_origfilename); |
| 3591 | if (*PL_origfilename == '-' && PL_origfilename[1] == '\0') |
| 3592 | scriptname = (char *)""; |
| 3593 | if (fdscript >= 0) { |
| 3594 | PL_rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE); |
| 3595 | # if defined(HAS_FCNTL) && defined(F_SETFD) |
| 3596 | if (PL_rsfp) |
| 3597 | /* ensure close-on-exec */ |
| 3598 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); |
| 3599 | # endif |
| 3600 | } |
| 3601 | #ifdef IAMSUID |
| 3602 | else { |
| 3603 | Perl_croak(aTHX_ "sperl needs fd script\n" |
| 3604 | "You should not call sperl directly; do you need to " |
| 3605 | "change a #! line\nfrom sperl to perl?\n"); |
| 3606 | |
| 3607 | /* PSz 11 Nov 03 |
| 3608 | * Do not open (or do other fancy stuff) while setuid. |
| 3609 | * Perl does the open, and hands script to suidperl on a fd; |
| 3610 | * suidperl only does some checks, sets up UIDs and re-execs |
| 3611 | * perl with that fd as it has always done. |
| 3612 | */ |
| 3613 | } |
| 3614 | if (*suidscript != 1) { |
| 3615 | Perl_croak(aTHX_ "suidperl needs (suid) fd script\n"); |
| 3616 | } |
| 3617 | #else /* IAMSUID */ |
| 3618 | else if (PL_preprocess) { |
| 3619 | const char * const cpp_cfg = CPPSTDIN; |
| 3620 | SV * const cpp = newSVpvs(""); |
| 3621 | SV * const cmd = newSV(0); |
| 3622 | |
| 3623 | if (cpp_cfg[0] == 0) /* PERL_MICRO? */ |
| 3624 | Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined"); |
| 3625 | if (strEQ(cpp_cfg, "cppstdin")) |
| 3626 | Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP); |
| 3627 | sv_catpv(cpp, cpp_cfg); |
| 3628 | |
| 3629 | # ifndef VMS |
| 3630 | sv_catpvs(sv, "-I"); |
| 3631 | sv_catpv(sv,PRIVLIB_EXP); |
| 3632 | # endif |
| 3633 | |
| 3634 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3635 | "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n", |
| 3636 | scriptname, SvPVX_const (cpp), SvPVX_const (sv), |
| 3637 | CPPMINUS)); |
| 3638 | |
| 3639 | # if defined(MSDOS) || defined(WIN32) || defined(VMS) |
| 3640 | quote = "\""; |
| 3641 | # else |
| 3642 | quote = "'"; |
| 3643 | # endif |
| 3644 | |
| 3645 | # ifdef VMS |
| 3646 | cpp_discard_flag = ""; |
| 3647 | # else |
| 3648 | cpp_discard_flag = "-C"; |
| 3649 | # endif |
| 3650 | |
| 3651 | # ifdef OS2 |
| 3652 | perl = os2_execname(aTHX); |
| 3653 | # else |
| 3654 | perl = PL_origargv[0]; |
| 3655 | # endif |
| 3656 | |
| 3657 | |
| 3658 | /* This strips off Perl comments which might interfere with |
| 3659 | the C pre-processor, including #!. #line directives are |
| 3660 | deliberately stripped to avoid confusion with Perl's version |
| 3661 | of #line. FWP played some golf with it so it will fit |
| 3662 | into VMS's 255 character buffer. |
| 3663 | */ |
| 3664 | if( PL_doextract ) |
| 3665 | code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print"; |
| 3666 | else |
| 3667 | code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print"; |
| 3668 | |
| 3669 | Perl_sv_setpvf(aTHX_ cmd, "\ |
| 3670 | %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s", |
| 3671 | perl, quote, code, quote, scriptname, (void*)cpp, |
| 3672 | cpp_discard_flag, (void*)sv, CPPMINUS); |
| 3673 | |
| 3674 | PL_doextract = FALSE; |
| 3675 | |
| 3676 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
| 3677 | "PL_preprocess: cmd=\"%s\"\n", |
| 3678 | SvPVX_const(cmd))); |
| 3679 | |
| 3680 | PL_rsfp = PerlProc_popen((char *)SvPVX_const(cmd), (char *)"r"); |
| 3681 | SvREFCNT_dec(cmd); |
| 3682 | SvREFCNT_dec(cpp); |
| 3683 | } |
| 3684 | else if (!*scriptname) { |
| 3685 | forbid_setid(0, *suidscript); |
| 3686 | PL_rsfp = PerlIO_stdin(); |
| 3687 | } |
| 3688 | else { |
| 3689 | PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE); |
| 3690 | # if defined(HAS_FCNTL) && defined(F_SETFD) |
| 3691 | if (PL_rsfp) |
| 3692 | /* ensure close-on-exec */ |
| 3693 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); |
| 3694 | # endif |
| 3695 | } |
| 3696 | #endif /* IAMSUID */ |
| 3697 | if (!PL_rsfp) { |
| 3698 | /* PSz 16 Sep 03 Keep neat error message */ |
| 3699 | if (PL_e_script) |
| 3700 | Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno)); |
| 3701 | else |
| 3702 | Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n", |
| 3703 | CopFILE(PL_curcop), Strerror(errno)); |
| 3704 | } |
| 3705 | return fdscript; |
| 3706 | } |
| 3707 | |
| 3708 | /* Mention |
| 3709 | * I_SYSSTATVFS HAS_FSTATVFS |
| 3710 | * I_SYSMOUNT |
| 3711 | * I_STATFS HAS_FSTATFS HAS_GETFSSTAT |
| 3712 | * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT |
| 3713 | * here so that metaconfig picks them up. */ |
| 3714 | |
| 3715 | #ifdef IAMSUID |
| 3716 | STATIC int |
| 3717 | S_fd_on_nosuid_fs(pTHX_ int fd) |
| 3718 | { |
| 3719 | /* PSz 27 Feb 04 |
| 3720 | * We used to do this as "plain" user (after swapping UIDs with setreuid); |
| 3721 | * but is needed also on machines without setreuid. |
| 3722 | * Seems safe enough to run as root. |
| 3723 | */ |
| 3724 | int check_okay = 0; /* able to do all the required sys/libcalls */ |
| 3725 | int on_nosuid = 0; /* the fd is on a nosuid fs */ |
| 3726 | /* PSz 12 Nov 03 |
| 3727 | * Need to check noexec also: nosuid might not be set, the average |
| 3728 | * sysadmin would say that nosuid is irrelevant once he sets noexec. |
| 3729 | */ |
| 3730 | int on_noexec = 0; /* the fd is on a noexec fs */ |
| 3731 | |
| 3732 | /* |
| 3733 | * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent(). |
| 3734 | * fstatvfs() is UNIX98. |
| 3735 | * fstatfs() is 4.3 BSD. |
| 3736 | * ustat()+getmnt() is pre-4.3 BSD. |
| 3737 | * getmntent() is O(number-of-mounted-filesystems) and can hang on |
| 3738 | * an irrelevant filesystem while trying to reach the right one. |
| 3739 | */ |
| 3740 | |
| 3741 | #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */ |
| 3742 | |
| 3743 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 3744 | defined(HAS_FSTATVFS) |
| 3745 | # define FD_ON_NOSUID_CHECK_OKAY |
| 3746 | struct statvfs stfs; |
| 3747 | |
| 3748 | check_okay = fstatvfs(fd, &stfs) == 0; |
| 3749 | on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID); |
| 3750 | #ifdef ST_NOEXEC |
| 3751 | /* ST_NOEXEC certainly absent on AIX 5.1, and doesn't seem to be documented |
| 3752 | on platforms where it is present. */ |
| 3753 | on_noexec = check_okay && (stfs.f_flag & ST_NOEXEC); |
| 3754 | #endif |
| 3755 | # endif /* fstatvfs */ |
| 3756 | |
| 3757 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 3758 | defined(PERL_MOUNT_NOSUID) && \ |
| 3759 | defined(PERL_MOUNT_NOEXEC) && \ |
| 3760 | defined(HAS_FSTATFS) && \ |
| 3761 | defined(HAS_STRUCT_STATFS) && \ |
| 3762 | defined(HAS_STRUCT_STATFS_F_FLAGS) |
| 3763 | # define FD_ON_NOSUID_CHECK_OKAY |
| 3764 | struct statfs stfs; |
| 3765 | |
| 3766 | check_okay = fstatfs(fd, &stfs) == 0; |
| 3767 | on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID); |
| 3768 | on_noexec = check_okay && (stfs.f_flags & PERL_MOUNT_NOEXEC); |
| 3769 | # endif /* fstatfs */ |
| 3770 | |
| 3771 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 3772 | defined(PERL_MOUNT_NOSUID) && \ |
| 3773 | defined(PERL_MOUNT_NOEXEC) && \ |
| 3774 | defined(HAS_FSTAT) && \ |
| 3775 | defined(HAS_USTAT) && \ |
| 3776 | defined(HAS_GETMNT) && \ |
| 3777 | defined(HAS_STRUCT_FS_DATA) && \ |
| 3778 | defined(NOSTAT_ONE) |
| 3779 | # define FD_ON_NOSUID_CHECK_OKAY |
| 3780 | Stat_t fdst; |
| 3781 | |
| 3782 | if (fstat(fd, &fdst) == 0) { |
| 3783 | struct ustat us; |
| 3784 | if (ustat(fdst.st_dev, &us) == 0) { |
| 3785 | struct fs_data fsd; |
| 3786 | /* NOSTAT_ONE here because we're not examining fields which |
| 3787 | * vary between that case and STAT_ONE. */ |
| 3788 | if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) { |
| 3789 | size_t cmplen = sizeof(us.f_fname); |
| 3790 | if (sizeof(fsd.fd_req.path) < cmplen) |
| 3791 | cmplen = sizeof(fsd.fd_req.path); |
| 3792 | if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) && |
| 3793 | fdst.st_dev == fsd.fd_req.dev) { |
| 3794 | check_okay = 1; |
| 3795 | on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID; |
| 3796 | on_noexec = fsd.fd_req.flags & PERL_MOUNT_NOEXEC; |
| 3797 | } |
| 3798 | } |
| 3799 | } |
| 3800 | } |
| 3801 | # endif /* fstat+ustat+getmnt */ |
| 3802 | |
| 3803 | # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \ |
| 3804 | defined(HAS_GETMNTENT) && \ |
| 3805 | defined(HAS_HASMNTOPT) && \ |
| 3806 | defined(MNTOPT_NOSUID) && \ |
| 3807 | defined(MNTOPT_NOEXEC) |
| 3808 | # define FD_ON_NOSUID_CHECK_OKAY |
| 3809 | FILE *mtab = fopen("/etc/mtab", "r"); |
| 3810 | struct mntent *entry; |
| 3811 | Stat_t stb, fsb; |
| 3812 | |
| 3813 | if (mtab && (fstat(fd, &stb) == 0)) { |
| 3814 | while (entry = getmntent(mtab)) { |
| 3815 | if (stat(entry->mnt_dir, &fsb) == 0 |
| 3816 | && fsb.st_dev == stb.st_dev) |
| 3817 | { |
| 3818 | /* found the filesystem */ |
| 3819 | check_okay = 1; |
| 3820 | if (hasmntopt(entry, MNTOPT_NOSUID)) |
| 3821 | on_nosuid = 1; |
| 3822 | if (hasmntopt(entry, MNTOPT_NOEXEC)) |
| 3823 | on_noexec = 1; |
| 3824 | break; |
| 3825 | } /* A single fs may well fail its stat(). */ |
| 3826 | } |
| 3827 | } |
| 3828 | if (mtab) |
| 3829 | fclose(mtab); |
| 3830 | # endif /* getmntent+hasmntopt */ |
| 3831 | |
| 3832 | if (!check_okay) |
| 3833 | Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid/noexec", PL_origfilename); |
| 3834 | if (on_nosuid) |
| 3835 | Perl_croak(aTHX_ "Setuid script \"%s\" on nosuid filesystem", PL_origfilename); |
| 3836 | if (on_noexec) |
| 3837 | Perl_croak(aTHX_ "Setuid script \"%s\" on noexec filesystem", PL_origfilename); |
| 3838 | return ((!check_okay) || on_nosuid || on_noexec); |
| 3839 | } |
| 3840 | #endif /* IAMSUID */ |
| 3841 | |
| 3842 | STATIC void |
| 3843 | S_validate_suid(pTHX_ const char *validarg, const char *scriptname, |
| 3844 | int fdscript, int suidscript) |
| 3845 | { |
| 3846 | dVAR; |
| 3847 | #ifdef IAMSUID |
| 3848 | /* int which; */ |
| 3849 | #endif /* IAMSUID */ |
| 3850 | |
| 3851 | /* do we need to emulate setuid on scripts? */ |
| 3852 | |
| 3853 | /* This code is for those BSD systems that have setuid #! scripts disabled |
| 3854 | * in the kernel because of a security problem. Merely defining DOSUID |
| 3855 | * in perl will not fix that problem, but if you have disabled setuid |
| 3856 | * scripts in the kernel, this will attempt to emulate setuid and setgid |
| 3857 | * on scripts that have those now-otherwise-useless bits set. The setuid |
| 3858 | * root version must be called suidperl or sperlN.NNN. If regular perl |
| 3859 | * discovers that it has opened a setuid script, it calls suidperl with |
| 3860 | * the same argv that it had. If suidperl finds that the script it has |
| 3861 | * just opened is NOT setuid root, it sets the effective uid back to the |
| 3862 | * uid. We don't just make perl setuid root because that loses the |
| 3863 | * effective uid we had before invoking perl, if it was different from the |
| 3864 | * uid. |
| 3865 | * PSz 27 Feb 04 |
| 3866 | * Description/comments above do not match current workings: |
| 3867 | * suidperl must be hardlinked to sperlN.NNN (that is what we exec); |
| 3868 | * suidperl called with script open and name changed to /dev/fd/N/X; |
| 3869 | * suidperl croaks if script is not setuid; |
| 3870 | * making perl setuid would be a huge security risk (and yes, that |
| 3871 | * would lose any euid we might have had). |
| 3872 | * |
| 3873 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must |
| 3874 | * be defined in suidperl only. suidperl must be setuid root. The |
| 3875 | * Configure script will set this up for you if you want it. |
| 3876 | */ |
| 3877 | |
| 3878 | #ifdef DOSUID |
| 3879 | const char *s, *s2; |
| 3880 | |
| 3881 | if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */ |
| 3882 | Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename); |
| 3883 | if (PL_statbuf.st_mode & (S_ISUID|S_ISGID)) { |
| 3884 | I32 len; |
| 3885 | const char *linestr; |
| 3886 | const char *s_end; |
| 3887 | |
| 3888 | #ifdef IAMSUID |
| 3889 | if (fdscript < 0 || suidscript != 1) |
| 3890 | Perl_croak(aTHX_ "Need (suid) fdscript in suidperl\n"); /* We already checked this */ |
| 3891 | /* PSz 11 Nov 03 |
| 3892 | * Since the script is opened by perl, not suidperl, some of these |
| 3893 | * checks are superfluous. Leaving them in probably does not lower |
| 3894 | * security(?!). |
| 3895 | */ |
| 3896 | /* PSz 27 Feb 04 |
| 3897 | * Do checks even for systems with no HAS_SETREUID. |
| 3898 | * We used to swap, then re-swap UIDs with |
| 3899 | #ifdef HAS_SETREUID |
| 3900 | if (setreuid(PL_euid,PL_uid) < 0 |
| 3901 | || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid) |
| 3902 | Perl_croak(aTHX_ "Can't swap uid and euid"); |
| 3903 | #endif |
| 3904 | #ifdef HAS_SETREUID |
| 3905 | if (setreuid(PL_uid,PL_euid) < 0 |
| 3906 | || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid) |
| 3907 | Perl_croak(aTHX_ "Can't reswap uid and euid"); |
| 3908 | #endif |
| 3909 | */ |
| 3910 | |
| 3911 | /* On this access check to make sure the directories are readable, |
| 3912 | * there is actually a small window that the user could use to make |
| 3913 | * filename point to an accessible directory. So there is a faint |
| 3914 | * chance that someone could execute a setuid script down in a |
| 3915 | * non-accessible directory. I don't know what to do about that. |
| 3916 | * But I don't think it's too important. The manual lies when |
| 3917 | * it says access() is useful in setuid programs. |
| 3918 | * |
| 3919 | * So, access() is pretty useless... but not harmful... do anyway. |
| 3920 | */ |
| 3921 | if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/ |
| 3922 | Perl_croak(aTHX_ "Can't access() script\n"); |
| 3923 | } |
| 3924 | |
| 3925 | /* If we can swap euid and uid, then we can determine access rights |
| 3926 | * with a simple stat of the file, and then compare device and |
| 3927 | * inode to make sure we did stat() on the same file we opened. |
| 3928 | * Then we just have to make sure he or she can execute it. |
| 3929 | * |
| 3930 | * PSz 24 Feb 04 |
| 3931 | * As the script is opened by perl, not suidperl, we do not need to |
| 3932 | * care much about access rights. |
| 3933 | * |
| 3934 | * The 'script changed' check is needed, or we can get lied to |
| 3935 | * about $0 with e.g. |
| 3936 | * suidperl /dev/fd/4//bin/x 4<setuidscript |
| 3937 | * Without HAS_SETREUID, is it safe to stat() as root? |
| 3938 | * |
| 3939 | * Are there any operating systems that pass /dev/fd/xxx for setuid |
| 3940 | * scripts, as suggested/described in perlsec(1)? Surely they do not |
| 3941 | * pass the script name as we do, so the "script changed" test would |
| 3942 | * fail for them... but we never get here with |
| 3943 | * SETUID_SCRIPTS_ARE_SECURE_NOW defined. |
| 3944 | * |
| 3945 | * This is one place where we must "lie" about return status: not |
| 3946 | * say if the stat() failed. We are doing this as root, and could |
| 3947 | * be tricked into reporting existence or not of files that the |
| 3948 | * "plain" user cannot even see. |
| 3949 | */ |
| 3950 | { |
| 3951 | Stat_t tmpstatbuf; |
| 3952 | if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0 || |
| 3953 | tmpstatbuf.st_dev != PL_statbuf.st_dev || |
| 3954 | tmpstatbuf.st_ino != PL_statbuf.st_ino) { |
| 3955 | Perl_croak(aTHX_ "Setuid script changed\n"); |
| 3956 | } |
| 3957 | |
| 3958 | } |
| 3959 | if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */ |
| 3960 | Perl_croak(aTHX_ "Real UID cannot exec script\n"); |
| 3961 | |
| 3962 | /* PSz 27 Feb 04 |
| 3963 | * We used to do this check as the "plain" user (after swapping |
| 3964 | * UIDs). But the check for nosuid and noexec filesystem is needed, |
| 3965 | * and should be done even without HAS_SETREUID. (Maybe those |
| 3966 | * operating systems do not have such mount options anyway...) |
| 3967 | * Seems safe enough to do as root. |
| 3968 | */ |
| 3969 | #if !defined(NO_NOSUID_CHECK) |
| 3970 | if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) { |
| 3971 | Perl_croak(aTHX_ "Setuid script on nosuid or noexec filesystem\n"); |
| 3972 | } |
| 3973 | #endif |
| 3974 | #endif /* IAMSUID */ |
| 3975 | |
| 3976 | if (!S_ISREG(PL_statbuf.st_mode)) { |
| 3977 | Perl_croak(aTHX_ "Setuid script not plain file\n"); |
| 3978 | } |
| 3979 | if (PL_statbuf.st_mode & S_IWOTH) |
| 3980 | Perl_croak(aTHX_ "Setuid/gid script is writable by world"); |
| 3981 | PL_doswitches = FALSE; /* -s is insecure in suid */ |
| 3982 | /* PSz 13 Nov 03 But -s was caught elsewhere ... so unsetting it here is useless(?!) */ |
| 3983 | CopLINE_inc(PL_curcop); |
| 3984 | if (sv_gets(PL_linestr, PL_rsfp, 0) == NULL) |
| 3985 | Perl_croak(aTHX_ "No #! line"); |
| 3986 | linestr = SvPV_nolen_const(PL_linestr); |
| 3987 | /* required even on Sys V */ |
| 3988 | if (!*linestr || !linestr[1] || strnNE(linestr,"#!",2)) |
| 3989 | Perl_croak(aTHX_ "No #! line"); |
| 3990 | linestr += 2; |
| 3991 | s = linestr; |
| 3992 | /* PSz 27 Feb 04 */ |
| 3993 | /* Sanity check on line length */ |
| 3994 | s_end = s + strlen(s); |
| 3995 | if (s_end == s || (s_end - s) > 4000) |
| 3996 | Perl_croak(aTHX_ "Very long #! line"); |
| 3997 | /* Allow more than a single space after #! */ |
| 3998 | while (isSPACE(*s)) s++; |
| 3999 | /* Sanity check on buffer end */ |
| 4000 | while ((*s) && !isSPACE(*s)) s++; |
| 4001 | for (s2 = s; (s2 > linestr && |
| 4002 | (isDIGIT(s2[-1]) || s2[-1] == '.' || s2[-1] == '_' |
| 4003 | || s2[-1] == '-')); s2--) ; |
| 4004 | /* Sanity check on buffer start */ |
| 4005 | if ( (s2-4 < linestr || strnNE(s2-4,"perl",4)) && |
| 4006 | (s-9 < linestr || strnNE(s-9,"perl",4)) ) |
| 4007 | Perl_croak(aTHX_ "Not a perl script"); |
| 4008 | while (*s == ' ' || *s == '\t') s++; |
| 4009 | /* |
| 4010 | * #! arg must be what we saw above. They can invoke it by |
| 4011 | * mentioning suidperl explicitly, but they may not add any strange |
| 4012 | * arguments beyond what #! says if they do invoke suidperl that way. |
| 4013 | */ |
| 4014 | /* |
| 4015 | * The way validarg was set up, we rely on the kernel to start |
| 4016 | * scripts with argv[1] set to contain all #! line switches (the |
| 4017 | * whole line). |
| 4018 | */ |
| 4019 | /* |
| 4020 | * Check that we got all the arguments listed in the #! line (not |
| 4021 | * just that there are no extraneous arguments). Might not matter |
| 4022 | * much, as switches from #! line seem to be acted upon (also), and |
| 4023 | * so may be checked and trapped in perl. But, security checks must |
| 4024 | * be done in suidperl and not deferred to perl. Note that suidperl |
| 4025 | * does not get around to parsing (and checking) the switches on |
| 4026 | * the #! line (but execs perl sooner). |
| 4027 | * Allow (require) a trailing newline (which may be of two |
| 4028 | * characters on some architectures?) (but no other trailing |
| 4029 | * whitespace). |
| 4030 | */ |
| 4031 | len = strlen(validarg); |
| 4032 | if (strEQ(validarg," PHOOEY ") || |
| 4033 | strnNE(s,validarg,len) || !isSPACE(s[len]) || |
| 4034 | !((s_end - s) == len+1 |
| 4035 | || ((s_end - s) == len+2 && isSPACE(s[len+1])))) |
| 4036 | Perl_croak(aTHX_ "Args must match #! line"); |
| 4037 | |
| 4038 | #ifndef IAMSUID |
| 4039 | if (fdscript < 0 && |
| 4040 | PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) && |
| 4041 | PL_euid == PL_statbuf.st_uid) |
| 4042 | if (!PL_do_undump) |
| 4043 | Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 4044 | FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n"); |
| 4045 | #endif /* IAMSUID */ |
| 4046 | |
| 4047 | if (fdscript < 0 && |
| 4048 | PL_euid) { /* oops, we're not the setuid root perl */ |
| 4049 | /* PSz 18 Feb 04 |
| 4050 | * When root runs a setuid script, we do not go through the same |
| 4051 | * steps of execing sperl and then perl with fd scripts, but |
| 4052 | * simply set up UIDs within the same perl invocation; so do |
| 4053 | * not have the same checks (on options, whatever) that we have |
| 4054 | * for plain users. No problem really: would have to be a script |
| 4055 | * that does not actually work for plain users; and if root is |
| 4056 | * foolish and can be persuaded to run such an unsafe script, he |
| 4057 | * might run also non-setuid ones, and deserves what he gets. |
| 4058 | * |
| 4059 | * Or, we might drop the PL_euid check above (and rely just on |
| 4060 | * fdscript to avoid loops), and do the execs |
| 4061 | * even for root. |
| 4062 | */ |
| 4063 | #ifndef IAMSUID |
| 4064 | int which; |
| 4065 | /* PSz 11 Nov 03 |
| 4066 | * Pass fd script to suidperl. |
| 4067 | * Exec suidperl, substituting fd script for scriptname. |
| 4068 | * Pass script name as "subdir" of fd, which perl will grok; |
| 4069 | * in fact will use that to distinguish this from "normal" |
| 4070 | * usage, see comments above. |
| 4071 | */ |
| 4072 | PerlIO_rewind(PL_rsfp); |
| 4073 | PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ |
| 4074 | /* PSz 27 Feb 04 Sanity checks on scriptname */ |
| 4075 | if ((!scriptname) || (!*scriptname) ) { |
| 4076 | Perl_croak(aTHX_ "No setuid script name\n"); |
| 4077 | } |
| 4078 | if (*scriptname == '-') { |
| 4079 | Perl_croak(aTHX_ "Setuid script name may not begin with dash\n"); |
| 4080 | /* Or we might confuse it with an option when replacing |
| 4081 | * name in argument list, below (though we do pointer, not |
| 4082 | * string, comparisons). |
| 4083 | */ |
| 4084 | } |
| 4085 | for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; |
| 4086 | if (!PL_origargv[which]) { |
| 4087 | Perl_croak(aTHX_ "Can't change argv to have fd script\n"); |
| 4088 | } |
| 4089 | PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", |
| 4090 | PerlIO_fileno(PL_rsfp), PL_origargv[which])); |
| 4091 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 4092 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
| 4093 | #endif |
| 4094 | PERL_FPU_PRE_EXEC |
| 4095 | PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP, |
| 4096 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 4097 | (int)PERL_SUBVERSION), PL_origargv); |
| 4098 | PERL_FPU_POST_EXEC |
| 4099 | #endif /* IAMSUID */ |
| 4100 | Perl_croak(aTHX_ "Can't do setuid (cannot exec sperl)\n"); |
| 4101 | } |
| 4102 | |
| 4103 | if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) { |
| 4104 | /* PSz 26 Feb 04 |
| 4105 | * This seems back to front: we try HAS_SETEGID first; if not available |
| 4106 | * then try HAS_SETREGID; as a last chance we try HAS_SETRESGID. May be OK |
| 4107 | * in the sense that we only want to set EGID; but are there any machines |
| 4108 | * with either of the latter, but not the former? Same with UID, later. |
| 4109 | */ |
| 4110 | #ifdef HAS_SETEGID |
| 4111 | (void)setegid(PL_statbuf.st_gid); |
| 4112 | #else |
| 4113 | #ifdef HAS_SETREGID |
| 4114 | (void)setregid((Gid_t)-1,PL_statbuf.st_gid); |
| 4115 | #else |
| 4116 | #ifdef HAS_SETRESGID |
| 4117 | (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1); |
| 4118 | #else |
| 4119 | PerlProc_setgid(PL_statbuf.st_gid); |
| 4120 | #endif |
| 4121 | #endif |
| 4122 | #endif |
| 4123 | if (PerlProc_getegid() != PL_statbuf.st_gid) |
| 4124 | Perl_croak(aTHX_ "Can't do setegid!\n"); |
| 4125 | } |
| 4126 | if (PL_statbuf.st_mode & S_ISUID) { |
| 4127 | if (PL_statbuf.st_uid != PL_euid) |
| 4128 | #ifdef HAS_SETEUID |
| 4129 | (void)seteuid(PL_statbuf.st_uid); /* all that for this */ |
| 4130 | #else |
| 4131 | #ifdef HAS_SETREUID |
| 4132 | (void)setreuid((Uid_t)-1,PL_statbuf.st_uid); |
| 4133 | #else |
| 4134 | #ifdef HAS_SETRESUID |
| 4135 | (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1); |
| 4136 | #else |
| 4137 | PerlProc_setuid(PL_statbuf.st_uid); |
| 4138 | #endif |
| 4139 | #endif |
| 4140 | #endif |
| 4141 | if (PerlProc_geteuid() != PL_statbuf.st_uid) |
| 4142 | Perl_croak(aTHX_ "Can't do seteuid!\n"); |
| 4143 | } |
| 4144 | else if (PL_uid) { /* oops, mustn't run as root */ |
| 4145 | #ifdef HAS_SETEUID |
| 4146 | (void)seteuid((Uid_t)PL_uid); |
| 4147 | #else |
| 4148 | #ifdef HAS_SETREUID |
| 4149 | (void)setreuid((Uid_t)-1,(Uid_t)PL_uid); |
| 4150 | #else |
| 4151 | #ifdef HAS_SETRESUID |
| 4152 | (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1); |
| 4153 | #else |
| 4154 | PerlProc_setuid((Uid_t)PL_uid); |
| 4155 | #endif |
| 4156 | #endif |
| 4157 | #endif |
| 4158 | if (PerlProc_geteuid() != PL_uid) |
| 4159 | Perl_croak(aTHX_ "Can't do seteuid!\n"); |
| 4160 | } |
| 4161 | init_ids(); |
| 4162 | if (!cando(S_IXUSR,TRUE,&PL_statbuf)) |
| 4163 | Perl_croak(aTHX_ "Effective UID cannot exec script\n"); /* they can't do this */ |
| 4164 | } |
| 4165 | #ifdef IAMSUID |
| 4166 | else if (PL_preprocess) /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */ |
| 4167 | Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n"); |
| 4168 | else if (fdscript < 0 || suidscript != 1) |
| 4169 | /* PSz 13 Nov 03 Caught elsewhere, useless(?!) here */ |
| 4170 | Perl_croak(aTHX_ "(suid) fdscript needed in suidperl\n"); |
| 4171 | else { |
| 4172 | /* PSz 16 Sep 03 Keep neat error message */ |
| 4173 | Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n"); |
| 4174 | } |
| 4175 | |
| 4176 | /* We absolutely must clear out any saved ids here, so we */ |
| 4177 | /* exec the real perl, substituting fd script for scriptname. */ |
| 4178 | /* (We pass script name as "subdir" of fd, which perl will grok.) */ |
| 4179 | /* |
| 4180 | * It might be thought that using setresgid and/or setresuid (changed to |
| 4181 | * set the saved IDs) above might obviate the need to exec, and we could |
| 4182 | * go on to "do the perl thing". |
| 4183 | * |
| 4184 | * Is there such a thing as "saved GID", and is that set for setuid (but |
| 4185 | * not setgid) execution like suidperl? Without exec, it would not be |
| 4186 | * cleared for setuid (but not setgid) scripts (or might need a dummy |
| 4187 | * setresgid). |
| 4188 | * |
| 4189 | * We need suidperl to do the exact same argument checking that perl |
| 4190 | * does. Thus it cannot be very small; while it could be significantly |
| 4191 | * smaller, it is safer (simpler?) to make it essentially the same |
| 4192 | * binary as perl (but they are not identical). - Maybe could defer that |
| 4193 | * check to the invoked perl, and suidperl be a tiny wrapper instead; |
| 4194 | * but prefer to do thorough checks in suidperl itself. Such deferral |
| 4195 | * would make suidperl security rely on perl, a design no-no. |
| 4196 | * |
| 4197 | * Setuid things should be short and simple, thus easy to understand and |
| 4198 | * verify. They should do their "own thing", without influence by |
| 4199 | * attackers. It may help if their internal execution flow is fixed, |
| 4200 | * regardless of platform: it may be best to exec anyway. |
| 4201 | * |
| 4202 | * Suidperl should at least be conceptually simple: a wrapper only, |
| 4203 | * never to do any real perl. Maybe we should put |
| 4204 | * #ifdef IAMSUID |
| 4205 | * Perl_croak(aTHX_ "Suidperl should never do real perl\n"); |
| 4206 | * #endif |
| 4207 | * into the perly bits. |
| 4208 | */ |
| 4209 | PerlIO_rewind(PL_rsfp); |
| 4210 | PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */ |
| 4211 | /* PSz 11 Nov 03 |
| 4212 | * Keep original arguments: suidperl already has fd script. |
| 4213 | */ |
| 4214 | /* for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ; */ |
| 4215 | /* if (!PL_origargv[which]) { */ |
| 4216 | /* errno = EPERM; */ |
| 4217 | /* Perl_croak(aTHX_ "Permission denied\n"); */ |
| 4218 | /* } */ |
| 4219 | /* PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s", */ |
| 4220 | /* PerlIO_fileno(PL_rsfp), PL_origargv[which])); */ |
| 4221 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
| 4222 | fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
| 4223 | #endif |
| 4224 | PERL_FPU_PRE_EXEC |
| 4225 | PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP, |
| 4226 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 4227 | (int)PERL_SUBVERSION), PL_origargv);/* try again */ |
| 4228 | PERL_FPU_POST_EXEC |
| 4229 | Perl_croak(aTHX_ "Can't do setuid (suidperl cannot exec perl)\n"); |
| 4230 | #endif /* IAMSUID */ |
| 4231 | #else /* !DOSUID */ |
| 4232 | PERL_UNUSED_ARG(fdscript); |
| 4233 | PERL_UNUSED_ARG(suidscript); |
| 4234 | if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */ |
| 4235 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 4236 | PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */ |
| 4237 | if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID) |
| 4238 | || |
| 4239 | (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID) |
| 4240 | ) |
| 4241 | if (!PL_do_undump) |
| 4242 | Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
| 4243 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
| 4244 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 4245 | /* not set-id, must be wrapped */ |
| 4246 | } |
| 4247 | #endif /* DOSUID */ |
| 4248 | PERL_UNUSED_ARG(validarg); |
| 4249 | PERL_UNUSED_ARG(scriptname); |
| 4250 | } |
| 4251 | |
| 4252 | STATIC void |
| 4253 | S_find_beginning(pTHX) |
| 4254 | { |
| 4255 | dVAR; |
| 4256 | register char *s; |
| 4257 | register const char *s2; |
| 4258 | #ifdef MACOS_TRADITIONAL |
| 4259 | int maclines = 0; |
| 4260 | #endif |
| 4261 | |
| 4262 | /* skip forward in input to the real script? */ |
| 4263 | |
| 4264 | #ifdef MACOS_TRADITIONAL |
| 4265 | /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */ |
| 4266 | |
| 4267 | while (PL_doextract || gMacPerl_AlwaysExtract) { |
| 4268 | if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == NULL) { |
| 4269 | if (!gMacPerl_AlwaysExtract) |
| 4270 | Perl_croak(aTHX_ "No Perl script found in input\n"); |
| 4271 | |
| 4272 | if (PL_doextract) /* require explicit override ? */ |
| 4273 | if (!OverrideExtract(PL_origfilename)) |
| 4274 | Perl_croak(aTHX_ "User aborted script\n"); |
| 4275 | else |
| 4276 | PL_doextract = FALSE; |
| 4277 | |
| 4278 | /* Pater peccavi, file does not have #! */ |
| 4279 | PerlIO_rewind(PL_rsfp); |
| 4280 | |
| 4281 | break; |
| 4282 | } |
| 4283 | #else |
| 4284 | while (PL_doextract) { |
| 4285 | if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == NULL) |
| 4286 | Perl_croak(aTHX_ "No Perl script found in input\n"); |
| 4287 | #endif |
| 4288 | s2 = s; |
| 4289 | if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) { |
| 4290 | PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */ |
| 4291 | PL_doextract = FALSE; |
| 4292 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
| 4293 | s2 = s; |
| 4294 | while (*s == ' ' || *s == '\t') s++; |
| 4295 | if (*s++ == '-') { |
| 4296 | while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.' |
| 4297 | || s2[-1] == '_') s2--; |
| 4298 | if (strnEQ(s2-4,"perl",4)) |
| 4299 | while ((s = moreswitches(s))) |
| 4300 | ; |
| 4301 | } |
| 4302 | #ifdef MACOS_TRADITIONAL |
| 4303 | /* We are always searching for the #!perl line in MacPerl, |
| 4304 | * so if we find it, still keep the line count correct |
| 4305 | * by counting lines we already skipped over |
| 4306 | */ |
| 4307 | for (; maclines > 0 ; maclines--) |
| 4308 | PerlIO_ungetc(PL_rsfp, '\n'); |
| 4309 | |
| 4310 | break; |
| 4311 | |
| 4312 | /* gMacPerl_AlwaysExtract is false in MPW tool */ |
| 4313 | } else if (gMacPerl_AlwaysExtract) { |
| 4314 | ++maclines; |
| 4315 | #endif |
| 4316 | } |
| 4317 | } |
| 4318 | } |
| 4319 | |
| 4320 | |
| 4321 | STATIC void |
| 4322 | S_init_ids(pTHX) |
| 4323 | { |
| 4324 | dVAR; |
| 4325 | PL_uid = PerlProc_getuid(); |
| 4326 | PL_euid = PerlProc_geteuid(); |
| 4327 | PL_gid = PerlProc_getgid(); |
| 4328 | PL_egid = PerlProc_getegid(); |
| 4329 | #ifdef VMS |
| 4330 | PL_uid |= PL_gid << 16; |
| 4331 | PL_euid |= PL_egid << 16; |
| 4332 | #endif |
| 4333 | /* Should not happen: */ |
| 4334 | CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 4335 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| 4336 | /* BUG */ |
| 4337 | /* PSz 27 Feb 04 |
| 4338 | * Should go by suidscript, not uid!=euid: why disallow |
| 4339 | * system("ls") in scripts run from setuid things? |
| 4340 | * Or, is this run before we check arguments and set suidscript? |
| 4341 | * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then? |
| 4342 | * (We never have suidscript, can we be sure to have fdscript?) |
| 4343 | * Or must then go by UID checks? See comments in forbid_setid also. |
| 4344 | */ |
| 4345 | } |
| 4346 | |
| 4347 | /* This is used very early in the lifetime of the program, |
| 4348 | * before even the options are parsed, so PL_tainting has |
| 4349 | * not been initialized properly. */ |
| 4350 | bool |
| 4351 | Perl_doing_taint(int argc, char *argv[], char *envp[]) |
| 4352 | { |
| 4353 | #ifndef PERL_IMPLICIT_SYS |
| 4354 | /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia |
| 4355 | * before we have an interpreter-- and the whole point of this |
| 4356 | * function is to be called at such an early stage. If you are on |
| 4357 | * a system with PERL_IMPLICIT_SYS but you do have a concept of |
| 4358 | * "tainted because running with altered effective ids', you'll |
| 4359 | * have to add your own checks somewhere in here. The two most |
| 4360 | * known samples of 'implicitness' are Win32 and NetWare, neither |
| 4361 | * of which has much of concept of 'uids'. */ |
| 4362 | int uid = PerlProc_getuid(); |
| 4363 | int euid = PerlProc_geteuid(); |
| 4364 | int gid = PerlProc_getgid(); |
| 4365 | int egid = PerlProc_getegid(); |
| 4366 | (void)envp; |
| 4367 | |
| 4368 | #ifdef VMS |
| 4369 | uid |= gid << 16; |
| 4370 | euid |= egid << 16; |
| 4371 | #endif |
| 4372 | if (uid && (euid != uid || egid != gid)) |
| 4373 | return 1; |
| 4374 | #endif /* !PERL_IMPLICIT_SYS */ |
| 4375 | /* This is a really primitive check; environment gets ignored only |
| 4376 | * if -T are the first chars together; otherwise one gets |
| 4377 | * "Too late" message. */ |
| 4378 | if ( argc > 1 && argv[1][0] == '-' |
| 4379 | && (argv[1][1] == 't' || argv[1][1] == 'T') ) |
| 4380 | return 1; |
| 4381 | return 0; |
| 4382 | } |
| 4383 | |
| 4384 | /* Passing the flag as a single char rather than a string is a slight space |
| 4385 | optimisation. The only message that isn't /^-.$/ is |
| 4386 | "program input from stdin", which is substituted in place of '\0', which |
| 4387 | could never be a command line flag. */ |
| 4388 | STATIC void |
| 4389 | S_forbid_setid(pTHX_ const char flag, const int suidscript) |
| 4390 | { |
| 4391 | dVAR; |
| 4392 | char string[3] = "-x"; |
| 4393 | const char *message = "program input from stdin"; |
| 4394 | |
| 4395 | if (flag) { |
| 4396 | string[1] = flag; |
| 4397 | message = string; |
| 4398 | } |
| 4399 | |
| 4400 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| 4401 | if (PL_euid != PL_uid) |
| 4402 | Perl_croak(aTHX_ "No %s allowed while running setuid", message); |
| 4403 | if (PL_egid != PL_gid) |
| 4404 | Perl_croak(aTHX_ "No %s allowed while running setgid", message); |
| 4405 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
| 4406 | /* PSz 29 Feb 04 |
| 4407 | * Checks for UID/GID above "wrong": why disallow |
| 4408 | * perl -e 'print "Hello\n"' |
| 4409 | * from within setuid things?? Simply drop them: replaced by |
| 4410 | * fdscript/suidscript and #ifdef IAMSUID checks below. |
| 4411 | * |
| 4412 | * This may be too late for command-line switches. Will catch those on |
| 4413 | * the #! line, after finding the script name and setting up |
| 4414 | * fdscript/suidscript. Note that suidperl does not get around to |
| 4415 | * parsing (and checking) the switches on the #! line, but checks that |
| 4416 | * the two sets are identical. |
| 4417 | * |
| 4418 | * With SETUID_SCRIPTS_ARE_SECURE_NOW, could we use fdscript, also or |
| 4419 | * instead, or would that be "too late"? (We never have suidscript, can |
| 4420 | * we be sure to have fdscript?) |
| 4421 | * |
| 4422 | * Catch things with suidscript (in descendant of suidperl), even with |
| 4423 | * right UID/GID. Was already checked in suidperl, with #ifdef IAMSUID, |
| 4424 | * below; but I am paranoid. |
| 4425 | * |
| 4426 | * Also see comments about root running a setuid script, elsewhere. |
| 4427 | */ |
| 4428 | if (suidscript >= 0) |
| 4429 | Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message); |
| 4430 | #ifdef IAMSUID |
| 4431 | /* PSz 11 Nov 03 Catch it in suidperl, always! */ |
| 4432 | Perl_croak(aTHX_ "No %s allowed in suidperl", message); |
| 4433 | #endif /* IAMSUID */ |
| 4434 | } |
| 4435 | |
| 4436 | void |
| 4437 | Perl_init_debugger(pTHX) |
| 4438 | { |
| 4439 | dVAR; |
| 4440 | HV * const ostash = PL_curstash; |
| 4441 | |
| 4442 | PL_curstash = PL_debstash; |
| 4443 | PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args", GV_ADDMULTI, |
| 4444 | SVt_PVAV)))); |
| 4445 | AvREAL_off(PL_dbargs); |
| 4446 | PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV); |
| 4447 | PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV); |
| 4448 | PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV)); |
| 4449 | PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV))); |
| 4450 | sv_setiv(PL_DBsingle, 0); |
| 4451 | PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV))); |
| 4452 | sv_setiv(PL_DBtrace, 0); |
| 4453 | PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV))); |
| 4454 | sv_setiv(PL_DBsignal, 0); |
| 4455 | PL_DBassertion = GvSV((gv_fetchpvs("DB::assertion", GV_ADDMULTI, SVt_PV))); |
| 4456 | sv_setiv(PL_DBassertion, 0); |
| 4457 | PL_curstash = ostash; |
| 4458 | } |
| 4459 | |
| 4460 | #ifndef STRESS_REALLOC |
| 4461 | #define REASONABLE(size) (size) |
| 4462 | #else |
| 4463 | #define REASONABLE(size) (1) /* unreasonable */ |
| 4464 | #endif |
| 4465 | |
| 4466 | void |
| 4467 | Perl_init_stacks(pTHX) |
| 4468 | { |
| 4469 | dVAR; |
| 4470 | /* start with 128-item stack and 8K cxstack */ |
| 4471 | PL_curstackinfo = new_stackinfo(REASONABLE(128), |
| 4472 | REASONABLE(8192/sizeof(PERL_CONTEXT) - 1)); |
| 4473 | PL_curstackinfo->si_type = PERLSI_MAIN; |
| 4474 | PL_curstack = PL_curstackinfo->si_stack; |
| 4475 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
| 4476 | |
| 4477 | PL_stack_base = AvARRAY(PL_curstack); |
| 4478 | PL_stack_sp = PL_stack_base; |
| 4479 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
| 4480 | |
| 4481 | Newx(PL_tmps_stack,REASONABLE(128),SV*); |
| 4482 | PL_tmps_floor = -1; |
| 4483 | PL_tmps_ix = -1; |
| 4484 | PL_tmps_max = REASONABLE(128); |
| 4485 | |
| 4486 | Newx(PL_markstack,REASONABLE(32),I32); |
| 4487 | PL_markstack_ptr = PL_markstack; |
| 4488 | PL_markstack_max = PL_markstack + REASONABLE(32); |
| 4489 | |
| 4490 | SET_MARK_OFFSET; |
| 4491 | |
| 4492 | Newx(PL_scopestack,REASONABLE(32),I32); |
| 4493 | PL_scopestack_ix = 0; |
| 4494 | PL_scopestack_max = REASONABLE(32); |
| 4495 | |
| 4496 | Newx(PL_savestack,REASONABLE(128),ANY); |
| 4497 | PL_savestack_ix = 0; |
| 4498 | PL_savestack_max = REASONABLE(128); |
| 4499 | } |
| 4500 | |
| 4501 | #undef REASONABLE |
| 4502 | |
| 4503 | STATIC void |
| 4504 | S_nuke_stacks(pTHX) |
| 4505 | { |
| 4506 | dVAR; |
| 4507 | while (PL_curstackinfo->si_next) |
| 4508 | PL_curstackinfo = PL_curstackinfo->si_next; |
| 4509 | while (PL_curstackinfo) { |
| 4510 | PERL_SI *p = PL_curstackinfo->si_prev; |
| 4511 | /* curstackinfo->si_stack got nuked by sv_free_arenas() */ |
| 4512 | Safefree(PL_curstackinfo->si_cxstack); |
| 4513 | Safefree(PL_curstackinfo); |
| 4514 | PL_curstackinfo = p; |
| 4515 | } |
| 4516 | Safefree(PL_tmps_stack); |
| 4517 | Safefree(PL_markstack); |
| 4518 | Safefree(PL_scopestack); |
| 4519 | Safefree(PL_savestack); |
| 4520 | } |
| 4521 | |
| 4522 | STATIC void |
| 4523 | S_init_lexer(pTHX) |
| 4524 | { |
| 4525 | dVAR; |
| 4526 | PerlIO *tmpfp; |
| 4527 | tmpfp = PL_rsfp; |
| 4528 | PL_rsfp = NULL; |
| 4529 | lex_start(PL_linestr); |
| 4530 | PL_rsfp = tmpfp; |
| 4531 | PL_subname = newSVpvs("main"); |
| 4532 | } |
| 4533 | |
| 4534 | STATIC void |
| 4535 | S_init_predump_symbols(pTHX) |
| 4536 | { |
| 4537 | dVAR; |
| 4538 | GV *tmpgv; |
| 4539 | IO *io; |
| 4540 | |
| 4541 | sv_setpvn(get_sv("\"", TRUE), " ", 1); |
| 4542 | PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4543 | GvMULTI_on(PL_stdingv); |
| 4544 | io = GvIOp(PL_stdingv); |
| 4545 | IoTYPE(io) = IoTYPE_RDONLY; |
| 4546 | IoIFP(io) = PerlIO_stdin(); |
| 4547 | tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4548 | GvMULTI_on(tmpgv); |
| 4549 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc_simple(io); |
| 4550 | |
| 4551 | tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4552 | GvMULTI_on(tmpgv); |
| 4553 | io = GvIOp(tmpgv); |
| 4554 | IoTYPE(io) = IoTYPE_WRONLY; |
| 4555 | IoOFP(io) = IoIFP(io) = PerlIO_stdout(); |
| 4556 | setdefout(tmpgv); |
| 4557 | tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4558 | GvMULTI_on(tmpgv); |
| 4559 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc_simple(io); |
| 4560 | |
| 4561 | PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| 4562 | GvMULTI_on(PL_stderrgv); |
| 4563 | io = GvIOp(PL_stderrgv); |
| 4564 | IoTYPE(io) = IoTYPE_WRONLY; |
| 4565 | IoOFP(io) = IoIFP(io) = PerlIO_stderr(); |
| 4566 | tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 4567 | GvMULTI_on(tmpgv); |
| 4568 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc_simple(io); |
| 4569 | |
| 4570 | PL_statname = newSV(0); /* last filename we did stat on */ |
| 4571 | |
| 4572 | Safefree(PL_osname); |
| 4573 | PL_osname = savepv(OSNAME); |
| 4574 | } |
| 4575 | |
| 4576 | void |
| 4577 | Perl_init_argv_symbols(pTHX_ register int argc, register char **argv) |
| 4578 | { |
| 4579 | dVAR; |
| 4580 | argc--,argv++; /* skip name of script */ |
| 4581 | if (PL_doswitches) { |
| 4582 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| 4583 | char *s; |
| 4584 | if (!argv[0][1]) |
| 4585 | break; |
| 4586 | if (argv[0][1] == '-' && !argv[0][2]) { |
| 4587 | argc--,argv++; |
| 4588 | break; |
| 4589 | } |
| 4590 | if ((s = strchr(argv[0], '='))) { |
| 4591 | const char *const start_name = argv[0] + 1; |
| 4592 | sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name, |
| 4593 | TRUE, SVt_PV)), s + 1); |
| 4594 | } |
| 4595 | else |
| 4596 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1); |
| 4597 | } |
| 4598 | } |
| 4599 | if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) { |
| 4600 | GvMULTI_on(PL_argvgv); |
| 4601 | (void)gv_AVadd(PL_argvgv); |
| 4602 | av_clear(GvAVn(PL_argvgv)); |
| 4603 | for (; argc > 0; argc--,argv++) { |
| 4604 | SV * const sv = newSVpv(argv[0],0); |
| 4605 | av_push(GvAVn(PL_argvgv),sv); |
| 4606 | if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) { |
| 4607 | if (PL_unicode & PERL_UNICODE_ARGV_FLAG) |
| 4608 | SvUTF8_on(sv); |
| 4609 | } |
| 4610 | if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */ |
| 4611 | (void)sv_utf8_decode(sv); |
| 4612 | } |
| 4613 | } |
| 4614 | } |
| 4615 | |
| 4616 | STATIC void |
| 4617 | S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env) |
| 4618 | { |
| 4619 | dVAR; |
| 4620 | GV* tmpgv; |
| 4621 | |
| 4622 | PL_toptarget = newSV(0); |
| 4623 | sv_upgrade(PL_toptarget, SVt_PVFM); |
| 4624 | sv_setpvn(PL_toptarget, "", 0); |
| 4625 | PL_bodytarget = newSV(0); |
| 4626 | sv_upgrade(PL_bodytarget, SVt_PVFM); |
| 4627 | sv_setpvn(PL_bodytarget, "", 0); |
| 4628 | PL_formtarget = PL_bodytarget; |
| 4629 | |
| 4630 | TAINT; |
| 4631 | |
| 4632 | init_argv_symbols(argc,argv); |
| 4633 | |
| 4634 | if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) { |
| 4635 | #ifdef MACOS_TRADITIONAL |
| 4636 | /* $0 is not majick on a Mac */ |
| 4637 | sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename)); |
| 4638 | #else |
| 4639 | sv_setpv(GvSV(tmpgv),PL_origfilename); |
| 4640 | magicname("0", "0", 1); |
| 4641 | #endif |
| 4642 | } |
| 4643 | if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) { |
| 4644 | HV *hv; |
| 4645 | GvMULTI_on(PL_envgv); |
| 4646 | hv = GvHVn(PL_envgv); |
| 4647 | hv_magic(hv, NULL, PERL_MAGIC_env); |
| 4648 | #ifndef PERL_MICRO |
| 4649 | #ifdef USE_ENVIRON_ARRAY |
| 4650 | /* Note that if the supplied env parameter is actually a copy |
| 4651 | of the global environ then it may now point to free'd memory |
| 4652 | if the environment has been modified since. To avoid this |
| 4653 | problem we treat env==NULL as meaning 'use the default' |
| 4654 | */ |
| 4655 | if (!env) |
| 4656 | env = environ; |
| 4657 | if (env != environ |
| 4658 | # ifdef USE_ITHREADS |
| 4659 | && PL_curinterp == aTHX |
| 4660 | # endif |
| 4661 | ) |
| 4662 | { |
| 4663 | environ[0] = NULL; |
| 4664 | } |
| 4665 | if (env) { |
| 4666 | char** origenv = environ; |
| 4667 | char *s; |
| 4668 | SV *sv; |
| 4669 | for (; *env; env++) { |
| 4670 | if (!(s = strchr(*env,'=')) || s == *env) |
| 4671 | continue; |
| 4672 | #if defined(MSDOS) && !defined(DJGPP) |
| 4673 | *s = '\0'; |
| 4674 | (void)strupr(*env); |
| 4675 | *s = '='; |
| 4676 | #endif |
| 4677 | sv = newSVpv(s+1, 0); |
| 4678 | (void)hv_store(hv, *env, s - *env, sv, 0); |
| 4679 | if (env != environ) |
| 4680 | mg_set(sv); |
| 4681 | if (origenv != environ) { |
| 4682 | /* realloc has shifted us */ |
| 4683 | env = (env - origenv) + environ; |
| 4684 | origenv = environ; |
| 4685 | } |
| 4686 | } |
| 4687 | } |
| 4688 | #endif /* USE_ENVIRON_ARRAY */ |
| 4689 | #endif /* !PERL_MICRO */ |
| 4690 | } |
| 4691 | TAINT_NOT; |
| 4692 | if ((tmpgv = gv_fetchpvs("$", GV_ADD|GV_NOTQUAL, SVt_PV))) { |
| 4693 | SvREADONLY_off(GvSV(tmpgv)); |
| 4694 | sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid()); |
| 4695 | SvREADONLY_on(GvSV(tmpgv)); |
| 4696 | } |
| 4697 | #ifdef THREADS_HAVE_PIDS |
| 4698 | PL_ppid = (IV)getppid(); |
| 4699 | #endif |
| 4700 | |
| 4701 | /* touch @F array to prevent spurious warnings 20020415 MJD */ |
| 4702 | if (PL_minus_a) { |
| 4703 | (void) get_av("main::F", TRUE | GV_ADDMULTI); |
| 4704 | } |
| 4705 | /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */ |
| 4706 | (void) get_av("main::-", TRUE | GV_ADDMULTI); |
| 4707 | (void) get_av("main::+", TRUE | GV_ADDMULTI); |
| 4708 | } |
| 4709 | |
| 4710 | STATIC void |
| 4711 | S_init_perllib(pTHX) |
| 4712 | { |
| 4713 | dVAR; |
| 4714 | char *s; |
| 4715 | if (!PL_tainting) { |
| 4716 | #ifndef VMS |
| 4717 | s = PerlEnv_getenv("PERL5LIB"); |
| 4718 | /* |
| 4719 | * It isn't possible to delete an environment variable with |
| 4720 | * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that |
| 4721 | * case we treat PERL5LIB as undefined if it has a zero-length value. |
| 4722 | */ |
| 4723 | #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV) |
| 4724 | if (s && *s != '\0') |
| 4725 | #else |
| 4726 | if (s) |
| 4727 | #endif |
| 4728 | incpush(s, TRUE, TRUE, TRUE, FALSE); |
| 4729 | else |
| 4730 | incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE, FALSE); |
| 4731 | #else /* VMS */ |
| 4732 | /* Treat PERL5?LIB as a possible search list logical name -- the |
| 4733 | * "natural" VMS idiom for a Unix path string. We allow each |
| 4734 | * element to be a set of |-separated directories for compatibility. |
| 4735 | */ |
| 4736 | char buf[256]; |
| 4737 | int idx = 0; |
| 4738 | if (my_trnlnm("PERL5LIB",buf,0)) |
| 4739 | do { incpush(buf,TRUE,TRUE,TRUE,FALSE); } while (my_trnlnm("PERL5LIB",buf,++idx)); |
| 4740 | else |
| 4741 | while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE,FALSE); |
| 4742 | #endif /* VMS */ |
| 4743 | } |
| 4744 | |
| 4745 | /* Use the ~-expanded versions of APPLLIB (undocumented), |
| 4746 | ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB |
| 4747 | */ |
| 4748 | #ifdef APPLLIB_EXP |
| 4749 | incpush(APPLLIB_EXP, TRUE, TRUE, TRUE, TRUE); |
| 4750 | #endif |
| 4751 | |
| 4752 | #ifdef ARCHLIB_EXP |
| 4753 | incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4754 | #endif |
| 4755 | #ifdef MACOS_TRADITIONAL |
| 4756 | { |
| 4757 | Stat_t tmpstatbuf; |
| 4758 | SV * privdir = newSV(0); |
| 4759 | char * macperl = PerlEnv_getenv("MACPERL"); |
| 4760 | |
| 4761 | if (!macperl) |
| 4762 | macperl = ""; |
| 4763 | |
| 4764 | Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl); |
| 4765 | if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) |
| 4766 | incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE); |
| 4767 | Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl); |
| 4768 | if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode)) |
| 4769 | incpush(SvPVX(privdir), TRUE, FALSE, TRUE, FALSE); |
| 4770 | |
| 4771 | SvREFCNT_dec(privdir); |
| 4772 | } |
| 4773 | if (!PL_tainting) |
| 4774 | incpush(":", FALSE, FALSE, TRUE, FALSE); |
| 4775 | #else |
| 4776 | #ifndef PRIVLIB_EXP |
| 4777 | # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" |
| 4778 | #endif |
| 4779 | #if defined(WIN32) |
| 4780 | incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE, TRUE); |
| 4781 | #else |
| 4782 | incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4783 | #endif |
| 4784 | |
| 4785 | #ifdef SITEARCH_EXP |
| 4786 | /* sitearch is always relative to sitelib on Windows for |
| 4787 | * DLL-based path intuition to work correctly */ |
| 4788 | # if !defined(WIN32) |
| 4789 | incpush(SITEARCH_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4790 | # endif |
| 4791 | #endif |
| 4792 | |
| 4793 | #ifdef SITELIB_EXP |
| 4794 | # if defined(WIN32) |
| 4795 | /* this picks up sitearch as well */ |
| 4796 | incpush(SITELIB_EXP, TRUE, FALSE, TRUE, TRUE); |
| 4797 | # else |
| 4798 | incpush(SITELIB_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4799 | # endif |
| 4800 | #endif |
| 4801 | |
| 4802 | #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST) |
| 4803 | /* Search for version-specific dirs below here */ |
| 4804 | incpush(SITELIB_STEM, FALSE, TRUE, TRUE, TRUE); |
| 4805 | #endif |
| 4806 | |
| 4807 | #ifdef PERL_VENDORARCH_EXP |
| 4808 | /* vendorarch is always relative to vendorlib on Windows for |
| 4809 | * DLL-based path intuition to work correctly */ |
| 4810 | # if !defined(WIN32) |
| 4811 | incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4812 | # endif |
| 4813 | #endif |
| 4814 | |
| 4815 | #ifdef PERL_VENDORLIB_EXP |
| 4816 | # if defined(WIN32) |
| 4817 | incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE, TRUE); /* this picks up vendorarch as well */ |
| 4818 | # else |
| 4819 | incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE, TRUE); |
| 4820 | # endif |
| 4821 | #endif |
| 4822 | |
| 4823 | #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */ |
| 4824 | incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE, TRUE); |
| 4825 | #endif |
| 4826 | |
| 4827 | #ifdef PERL_OTHERLIBDIRS |
| 4828 | incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE, TRUE); |
| 4829 | #endif |
| 4830 | |
| 4831 | if (!PL_tainting) |
| 4832 | incpush(".", FALSE, FALSE, TRUE, FALSE); |
| 4833 | #endif /* MACOS_TRADITIONAL */ |
| 4834 | } |
| 4835 | |
| 4836 | #if defined(DOSISH) || defined(EPOC) || defined(__SYMBIAN32__) |
| 4837 | # define PERLLIB_SEP ';' |
| 4838 | #else |
| 4839 | # if defined(VMS) |
| 4840 | # define PERLLIB_SEP '|' |
| 4841 | # else |
| 4842 | # if defined(MACOS_TRADITIONAL) |
| 4843 | # define PERLLIB_SEP ',' |
| 4844 | # else |
| 4845 | # define PERLLIB_SEP ':' |
| 4846 | # endif |
| 4847 | # endif |
| 4848 | #endif |
| 4849 | #ifndef PERLLIB_MANGLE |
| 4850 | # define PERLLIB_MANGLE(s,n) (s) |
| 4851 | #endif |
| 4852 | |
| 4853 | /* Push a directory onto @INC if it exists. |
| 4854 | Generate a new SV if we do this, to save needing to copy the SV we push |
| 4855 | onto @INC */ |
| 4856 | STATIC SV * |
| 4857 | S_incpush_if_exists(pTHX_ SV *dir) |
| 4858 | { |
| 4859 | dVAR; |
| 4860 | Stat_t tmpstatbuf; |
| 4861 | if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 && |
| 4862 | S_ISDIR(tmpstatbuf.st_mode)) { |
| 4863 | av_push(GvAVn(PL_incgv), dir); |
| 4864 | dir = newSV(0); |
| 4865 | } |
| 4866 | return dir; |
| 4867 | } |
| 4868 | |
| 4869 | STATIC void |
| 4870 | S_incpush(pTHX_ const char *dir, bool addsubdirs, bool addoldvers, bool usesep, |
| 4871 | bool canrelocate) |
| 4872 | { |
| 4873 | dVAR; |
| 4874 | SV *subdir = NULL; |
| 4875 | const char *p = dir; |
| 4876 | |
| 4877 | if (!p || !*p) |
| 4878 | return; |
| 4879 | |
| 4880 | if (addsubdirs || addoldvers) { |
| 4881 | subdir = newSV(0); |
| 4882 | } |
| 4883 | |
| 4884 | /* Break at all separators */ |
| 4885 | while (p && *p) { |
| 4886 | SV *libdir = newSV(0); |
| 4887 | const char *s; |
| 4888 | |
| 4889 | /* skip any consecutive separators */ |
| 4890 | if (usesep) { |
| 4891 | while ( *p == PERLLIB_SEP ) { |
| 4892 | /* Uncomment the next line for PATH semantics */ |
| 4893 | /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */ |
| 4894 | p++; |
| 4895 | } |
| 4896 | } |
| 4897 | |
| 4898 | if ( usesep && (s = strchr(p, PERLLIB_SEP)) != NULL ) { |
| 4899 | sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), |
| 4900 | (STRLEN)(s - p)); |
| 4901 | p = s + 1; |
| 4902 | } |
| 4903 | else { |
| 4904 | sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); |
| 4905 | p = NULL; /* break out */ |
| 4906 | } |
| 4907 | #ifdef MACOS_TRADITIONAL |
| 4908 | if (!strchr(SvPVX(libdir), ':')) { |
| 4909 | char buf[256]; |
| 4910 | |
| 4911 | sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0)); |
| 4912 | } |
| 4913 | if (SvPVX(libdir)[SvCUR(libdir)-1] != ':') |
| 4914 | sv_catpvs(libdir, ":"); |
| 4915 | #endif |
| 4916 | |
| 4917 | /* Do the if() outside the #ifdef to avoid warnings about an unused |
| 4918 | parameter. */ |
| 4919 | if (canrelocate) { |
| 4920 | #ifdef PERL_RELOCATABLE_INC |
| 4921 | /* |
| 4922 | * Relocatable include entries are marked with a leading .../ |
| 4923 | * |
| 4924 | * The algorithm is |
| 4925 | * 0: Remove that leading ".../" |
| 4926 | * 1: Remove trailing executable name (anything after the last '/') |
| 4927 | * from the perl path to give a perl prefix |
| 4928 | * Then |
| 4929 | * While the @INC element starts "../" and the prefix ends with a real |
| 4930 | * directory (ie not . or ..) chop that real directory off the prefix |
| 4931 | * and the leading "../" from the @INC element. ie a logical "../" |
| 4932 | * cleanup |
| 4933 | * Finally concatenate the prefix and the remainder of the @INC element |
| 4934 | * The intent is that /usr/local/bin/perl and .../../lib/perl5 |
| 4935 | * generates /usr/local/lib/perl5 |
| 4936 | */ |
| 4937 | const char *libpath = SvPVX(libdir); |
| 4938 | STRLEN libpath_len = SvCUR(libdir); |
| 4939 | if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) { |
| 4940 | /* Game on! */ |
| 4941 | SV * const caret_X = get_sv("\030", 0); |
| 4942 | /* Going to use the SV just as a scratch buffer holding a C |
| 4943 | string: */ |
| 4944 | SV *prefix_sv; |
| 4945 | char *prefix; |
| 4946 | char *lastslash; |
| 4947 | |
| 4948 | /* $^X is *the* source of taint if tainting is on, hence |
| 4949 | SvPOK() won't be true. */ |
| 4950 | assert(caret_X); |
| 4951 | assert(SvPOKp(caret_X)); |
| 4952 | prefix_sv = newSVpvn(SvPVX(caret_X), SvCUR(caret_X)); |
| 4953 | /* Firstly take off the leading .../ |
| 4954 | If all else fail we'll do the paths relative to the current |
| 4955 | directory. */ |
| 4956 | sv_chop(libdir, libpath + 4); |
| 4957 | /* Don't use SvPV as we're intentionally bypassing taining, |
| 4958 | mortal copies that the mg_get of tainting creates, and |
| 4959 | corruption that seems to come via the save stack. |
| 4960 | I guess that the save stack isn't correctly set up yet. */ |
| 4961 | libpath = SvPVX(libdir); |
| 4962 | libpath_len = SvCUR(libdir); |
| 4963 | |
| 4964 | /* This would work more efficiently with memrchr, but as it's |
| 4965 | only a GNU extension we'd need to probe for it and |
| 4966 | implement our own. Not hard, but maybe not worth it? */ |
| 4967 | |
| 4968 | prefix = SvPVX(prefix_sv); |
| 4969 | lastslash = strrchr(prefix, '/'); |
| 4970 | |
| 4971 | /* First time in with the *lastslash = '\0' we just wipe off |
| 4972 | the trailing /perl from (say) /usr/foo/bin/perl |
| 4973 | */ |
| 4974 | if (lastslash) { |
| 4975 | SV *tempsv; |
| 4976 | while ((*lastslash = '\0'), /* Do that, come what may. */ |
| 4977 | (libpath_len >= 3 && memEQ(libpath, "../", 3) |
| 4978 | && (lastslash = strrchr(prefix, '/')))) { |
| 4979 | if (lastslash[1] == '\0' |
| 4980 | || (lastslash[1] == '.' |
| 4981 | && (lastslash[2] == '/' /* ends "/." */ |
| 4982 | || (lastslash[2] == '/' |
| 4983 | && lastslash[3] == '/' /* or "/.." */ |
| 4984 | )))) { |
| 4985 | /* Prefix ends "/" or "/." or "/..", any of which |
| 4986 | are fishy, so don't do any more logical cleanup. |
| 4987 | */ |
| 4988 | break; |
| 4989 | } |
| 4990 | /* Remove leading "../" from path */ |
| 4991 | libpath += 3; |
| 4992 | libpath_len -= 3; |
| 4993 | /* Next iteration round the loop removes the last |
| 4994 | directory name from prefix by writing a '\0' in |
| 4995 | the while clause. */ |
| 4996 | } |
| 4997 | /* prefix has been terminated with a '\0' to the correct |
| 4998 | length. libpath points somewhere into the libdir SV. |
| 4999 | We need to join the 2 with '/' and drop the result into |
| 5000 | libdir. */ |
| 5001 | tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath); |
| 5002 | SvREFCNT_dec(libdir); |
| 5003 | /* And this is the new libdir. */ |
| 5004 | libdir = tempsv; |
| 5005 | if (PL_tainting && |
| 5006 | (PL_uid != PL_euid || PL_gid != PL_egid)) { |
| 5007 | /* Need to taint reloccated paths if running set ID */ |
| 5008 | SvTAINTED_on(libdir); |
| 5009 | } |
| 5010 | } |
| 5011 | SvREFCNT_dec(prefix_sv); |
| 5012 | } |
| 5013 | #endif |
| 5014 | } |
| 5015 | /* |
| 5016 | * BEFORE pushing libdir onto @INC we may first push version- and |
| 5017 | * archname-specific sub-directories. |
| 5018 | */ |
| 5019 | if (addsubdirs || addoldvers) { |
| 5020 | #ifdef PERL_INC_VERSION_LIST |
| 5021 | /* Configure terminates PERL_INC_VERSION_LIST with a NULL */ |
| 5022 | const char * const incverlist[] = { PERL_INC_VERSION_LIST }; |
| 5023 | const char * const *incver; |
| 5024 | #endif |
| 5025 | #ifdef VMS |
| 5026 | char *unix; |
| 5027 | STRLEN len; |
| 5028 | |
| 5029 | if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) { |
| 5030 | len = strlen(unix); |
| 5031 | while (unix[len-1] == '/') len--; /* Cosmetic */ |
| 5032 | sv_usepvn(libdir,unix,len); |
| 5033 | } |
| 5034 | else |
| 5035 | PerlIO_printf(Perl_error_log, |
| 5036 | "Failed to unixify @INC element \"%s\"\n", |
| 5037 | SvPV(libdir,len)); |
| 5038 | #endif |
| 5039 | if (addsubdirs) { |
| 5040 | #ifdef MACOS_TRADITIONAL |
| 5041 | #define PERL_AV_SUFFIX_FMT "" |
| 5042 | #define PERL_ARCH_FMT "%s:" |
| 5043 | #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT |
| 5044 | #else |
| 5045 | #define PERL_AV_SUFFIX_FMT "/" |
| 5046 | #define PERL_ARCH_FMT "/%s" |
| 5047 | #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT |
| 5048 | #endif |
| 5049 | /* .../version/archname if -d .../version/archname */ |
| 5050 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT, |
| 5051 | (void*)libdir, |
| 5052 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 5053 | (int)PERL_SUBVERSION, ARCHNAME); |
| 5054 | subdir = S_incpush_if_exists(aTHX_ subdir); |
| 5055 | |
| 5056 | /* .../version if -d .../version */ |
| 5057 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, |
| 5058 | (void*)libdir, |
| 5059 | (int)PERL_REVISION, (int)PERL_VERSION, |
| 5060 | (int)PERL_SUBVERSION); |
| 5061 | subdir = S_incpush_if_exists(aTHX_ subdir); |
| 5062 | |
| 5063 | /* .../archname if -d .../archname */ |
| 5064 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, |
| 5065 | (void*)libdir, ARCHNAME); |
| 5066 | subdir = S_incpush_if_exists(aTHX_ subdir); |
| 5067 | |
| 5068 | } |
| 5069 | |
| 5070 | #ifdef PERL_INC_VERSION_LIST |
| 5071 | if (addoldvers) { |
| 5072 | for (incver = incverlist; *incver; incver++) { |
| 5073 | /* .../xxx if -d .../xxx */ |
| 5074 | Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver); |
| 5075 | subdir = S_incpush_if_exists(aTHX_ subdir); |
| 5076 | } |
| 5077 | } |
| 5078 | #endif |
| 5079 | } |
| 5080 | |
| 5081 | /* finally push this lib directory on the end of @INC */ |
| 5082 | av_push(GvAVn(PL_incgv), libdir); |
| 5083 | } |
| 5084 | if (subdir) { |
| 5085 | assert (SvREFCNT(subdir) == 1); |
| 5086 | SvREFCNT_dec(subdir); |
| 5087 | } |
| 5088 | } |
| 5089 | |
| 5090 | |
| 5091 | void |
| 5092 | Perl_call_list(pTHX_ I32 oldscope, AV *paramList) |
| 5093 | { |
| 5094 | dVAR; |
| 5095 | SV *atsv; |
| 5096 | const line_t oldline = CopLINE(PL_curcop); |
| 5097 | CV *cv; |
| 5098 | STRLEN len; |
| 5099 | int ret; |
| 5100 | dJMPENV; |
| 5101 | |
| 5102 | while (av_len(paramList) >= 0) { |
| 5103 | cv = (CV*)av_shift(paramList); |
| 5104 | if (PL_savebegin) { |
| 5105 | if (paramList == PL_beginav) { |
| 5106 | /* save PL_beginav for compiler */ |
| 5107 | if (! PL_beginav_save) |
| 5108 | PL_beginav_save = newAV(); |
| 5109 | av_push(PL_beginav_save, (SV*)cv); |
| 5110 | } |
| 5111 | else if (paramList == PL_checkav) { |
| 5112 | /* save PL_checkav for compiler */ |
| 5113 | if (! PL_checkav_save) |
| 5114 | PL_checkav_save = newAV(); |
| 5115 | av_push(PL_checkav_save, (SV*)cv); |
| 5116 | } |
| 5117 | } else { |
| 5118 | if (!PL_madskills) |
| 5119 | SAVEFREESV(cv); |
| 5120 | } |
| 5121 | JMPENV_PUSH(ret); |
| 5122 | switch (ret) { |
| 5123 | case 0: |
| 5124 | #ifdef PERL_MAD |
| 5125 | if (PL_madskills) |
| 5126 | PL_madskills |= 16384; |
| 5127 | #endif |
| 5128 | CALL_LIST_BODY(cv); |
| 5129 | #ifdef PERL_MAD |
| 5130 | if (PL_madskills) |
| 5131 | PL_madskills &= ~16384; |
| 5132 | #endif |
| 5133 | atsv = ERRSV; |
| 5134 | (void)SvPV_const(atsv, len); |
| 5135 | if (PL_madskills && PL_minus_c && paramList == PL_beginav) |
| 5136 | break; /* not really trying to run, so just wing it */ |
| 5137 | if (len) { |
| 5138 | PL_curcop = &PL_compiling; |
| 5139 | CopLINE_set(PL_curcop, oldline); |
| 5140 | if (paramList == PL_beginav) |
| 5141 | sv_catpvs(atsv, "BEGIN failed--compilation aborted"); |
| 5142 | else |
| 5143 | Perl_sv_catpvf(aTHX_ atsv, |
| 5144 | "%s failed--call queue aborted", |
| 5145 | paramList == PL_checkav ? "CHECK" |
| 5146 | : paramList == PL_initav ? "INIT" |
| 5147 | : "END"); |
| 5148 | while (PL_scopestack_ix > oldscope) |
| 5149 | LEAVE; |
| 5150 | JMPENV_POP; |
| 5151 | Perl_croak(aTHX_ "%"SVf"", (void*)atsv); |
| 5152 | } |
| 5153 | break; |
| 5154 | case 1: |
| 5155 | STATUS_ALL_FAILURE; |
| 5156 | /* FALL THROUGH */ |
| 5157 | case 2: |
| 5158 | /* my_exit() was called */ |
| 5159 | while (PL_scopestack_ix > oldscope) |
| 5160 | LEAVE; |
| 5161 | FREETMPS; |
| 5162 | PL_curstash = PL_defstash; |
| 5163 | PL_curcop = &PL_compiling; |
| 5164 | CopLINE_set(PL_curcop, oldline); |
| 5165 | JMPENV_POP; |
| 5166 | if (PL_madskills && PL_minus_c && paramList == PL_beginav) |
| 5167 | return; /* not really trying to run, so just wing it */ |
| 5168 | if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) { |
| 5169 | if (paramList == PL_beginav) |
| 5170 | Perl_croak(aTHX_ "BEGIN failed--compilation aborted"); |
| 5171 | else |
| 5172 | Perl_croak(aTHX_ "%s failed--call queue aborted", |
| 5173 | paramList == PL_checkav ? "CHECK" |
| 5174 | : paramList == PL_initav ? "INIT" |
| 5175 | : "END"); |
| 5176 | } |
| 5177 | my_exit_jump(); |
| 5178 | /* NOTREACHED */ |
| 5179 | case 3: |
| 5180 | if (PL_restartop) { |
| 5181 | PL_curcop = &PL_compiling; |
| 5182 | CopLINE_set(PL_curcop, oldline); |
| 5183 | JMPENV_JUMP(3); |
| 5184 | } |
| 5185 | PerlIO_printf(Perl_error_log, "panic: restartop\n"); |
| 5186 | FREETMPS; |
| 5187 | break; |
| 5188 | } |
| 5189 | JMPENV_POP; |
| 5190 | } |
| 5191 | } |
| 5192 | |
| 5193 | void |
| 5194 | Perl_my_exit(pTHX_ U32 status) |
| 5195 | { |
| 5196 | dVAR; |
| 5197 | DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n", |
| 5198 | thr, (unsigned long) status)); |
| 5199 | switch (status) { |
| 5200 | case 0: |
| 5201 | STATUS_ALL_SUCCESS; |
| 5202 | break; |
| 5203 | case 1: |
| 5204 | STATUS_ALL_FAILURE; |
| 5205 | break; |
| 5206 | default: |
| 5207 | STATUS_EXIT_SET(status); |
| 5208 | break; |
| 5209 | } |
| 5210 | my_exit_jump(); |
| 5211 | } |
| 5212 | |
| 5213 | void |
| 5214 | Perl_my_failure_exit(pTHX) |
| 5215 | { |
| 5216 | dVAR; |
| 5217 | #ifdef VMS |
| 5218 | /* We have been called to fall on our sword. The desired exit code |
| 5219 | * should be already set in STATUS_UNIX, but could be shifted over |
| 5220 | * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a |
| 5221 | * that code is set. |
| 5222 | * |
| 5223 | * If an error code has not been set, then force the issue. |
| 5224 | */ |
| 5225 | if (MY_POSIX_EXIT) { |
| 5226 | |
| 5227 | /* In POSIX_EXIT mode follow Perl documentations and use 255 for |
| 5228 | * the exit code when there isn't an error. |
| 5229 | */ |
| 5230 | |
| 5231 | if (STATUS_UNIX == 0) |
| 5232 | STATUS_UNIX_EXIT_SET(255); |
| 5233 | else { |
| 5234 | STATUS_UNIX_EXIT_SET(STATUS_UNIX); |
| 5235 | |
| 5236 | /* The exit code could have been set by $? or vmsish which |
| 5237 | * means that it may not be fatal. So convert |
| 5238 | * success/warning codes to fatal. |
| 5239 | */ |
| 5240 | if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) |
| 5241 | STATUS_UNIX_EXIT_SET(255); |
| 5242 | } |
| 5243 | } |
| 5244 | else { |
| 5245 | /* Traditionally Perl on VMS always expects a Fatal Error. */ |
| 5246 | if (vaxc$errno & 1) { |
| 5247 | |
| 5248 | /* So force success status to failure */ |
| 5249 | if (STATUS_NATIVE & 1) |
| 5250 | STATUS_ALL_FAILURE; |
| 5251 | } |
| 5252 | else { |
| 5253 | if (!vaxc$errno) { |
| 5254 | STATUS_UNIX = EINTR; /* In case something cares */ |
| 5255 | STATUS_ALL_FAILURE; |
| 5256 | } |
| 5257 | else { |
| 5258 | int severity; |
| 5259 | STATUS_NATIVE = vaxc$errno; /* Should already be this */ |
| 5260 | |
| 5261 | /* Encode the severity code */ |
| 5262 | severity = STATUS_NATIVE & STS$M_SEVERITY; |
| 5263 | STATUS_UNIX = (severity ? severity : 1) << 8; |
| 5264 | |
| 5265 | /* Perl expects this to be a fatal error */ |
| 5266 | if (severity != STS$K_SEVERE) |
| 5267 | STATUS_ALL_FAILURE; |
| 5268 | } |
| 5269 | } |
| 5270 | } |
| 5271 | |
| 5272 | #else |
| 5273 | int exitstatus; |
| 5274 | if (errno & 255) |
| 5275 | STATUS_UNIX_SET(errno); |
| 5276 | else { |
| 5277 | exitstatus = STATUS_UNIX >> 8; |
| 5278 | if (exitstatus & 255) |
| 5279 | STATUS_UNIX_SET(exitstatus); |
| 5280 | else |
| 5281 | STATUS_UNIX_SET(255); |
| 5282 | } |
| 5283 | #endif |
| 5284 | my_exit_jump(); |
| 5285 | } |
| 5286 | |
| 5287 | STATIC void |
| 5288 | S_my_exit_jump(pTHX) |
| 5289 | { |
| 5290 | dVAR; |
| 5291 | |
| 5292 | if (PL_e_script) { |
| 5293 | SvREFCNT_dec(PL_e_script); |
| 5294 | PL_e_script = NULL; |
| 5295 | } |
| 5296 | |
| 5297 | POPSTACK_TO(PL_mainstack); |
| 5298 | dounwind(-1); |
| 5299 | LEAVE_SCOPE(0); |
| 5300 | |
| 5301 | JMPENV_JUMP(2); |
| 5302 | } |
| 5303 | |
| 5304 | static I32 |
| 5305 | read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen) |
| 5306 | { |
| 5307 | dVAR; |
| 5308 | const char * const p = SvPVX_const(PL_e_script); |
| 5309 | const char *nl = strchr(p, '\n'); |
| 5310 | |
| 5311 | PERL_UNUSED_ARG(idx); |
| 5312 | PERL_UNUSED_ARG(maxlen); |
| 5313 | |
| 5314 | nl = (nl) ? nl+1 : SvEND(PL_e_script); |
| 5315 | if (nl-p == 0) { |
| 5316 | filter_del(read_e_script); |
| 5317 | return 0; |
| 5318 | } |
| 5319 | sv_catpvn(buf_sv, p, nl-p); |
| 5320 | sv_chop(PL_e_script, nl); |
| 5321 | return 1; |
| 5322 | } |
| 5323 | |
| 5324 | /* |
| 5325 | * Local variables: |
| 5326 | * c-indentation-style: bsd |
| 5327 | * c-basic-offset: 4 |
| 5328 | * indent-tabs-mode: t |
| 5329 | * End: |
| 5330 | * |
| 5331 | * ex: set ts=8 sts=4 sw=4 noet: |
| 5332 | */ |