Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* perl.c |
2 | * | |
1a30305b | 3 | * Copyright (c) 1987-1996 Larry Wall |
a687059c | 4 | * |
352d5a3a LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
a687059c | 7 | * |
8d063cd8 LW |
8 | */ |
9 | ||
a0d0e21e LW |
10 | /* |
11 | * "A ship then new they built for him/of mithril and of elven glass" --Bilbo | |
12 | */ | |
45d8adaa | 13 | |
378cc40b LW |
14 | #include "EXTERN.h" |
15 | #include "perl.h" | |
a687059c | 16 | #include "patchlevel.h" |
378cc40b | 17 | |
df5cef82 | 18 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e LW |
19 | #ifdef I_UNISTD |
20 | #include <unistd.h> | |
21 | #endif | |
a0d0e21e | 22 | |
71be2cbc | 23 | dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n"; |
463ee0b2 | 24 | |
a687059c LW |
25 | #ifdef IAMSUID |
26 | #ifndef DOSUID | |
27 | #define DOSUID | |
28 | #endif | |
29 | #endif | |
378cc40b | 30 | |
a687059c LW |
31 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
32 | #ifdef DOSUID | |
33 | #undef DOSUID | |
34 | #endif | |
35 | #endif | |
8d063cd8 | 36 | |
8ebc5c01 | 37 | #define I_REINIT \ |
38 | STMT_START { \ | |
39 | chopset = " \n-"; \ | |
40 | copline = NOLINE; \ | |
41 | curcop = &compiling; \ | |
42 | curcopdb = NULL; \ | |
43 | cxstack_ix = -1; \ | |
44 | cxstack_max = 128; \ | |
45 | dbargs = 0; \ | |
46 | dlmax = 128; \ | |
47 | laststatval = -1; \ | |
48 | laststype = OP_STAT; \ | |
49 | maxscream = -1; \ | |
50 | maxsysfd = MAXSYSFD; \ | |
51 | statname = Nullsv; \ | |
52 | tmps_floor = -1; \ | |
53 | tmps_ix = -1; \ | |
54 | op_mask = NULL; \ | |
55 | dlmax = 128; \ | |
56 | laststatval = -1; \ | |
57 | laststype = OP_STAT; \ | |
58 | } STMT_END | |
59 | ||
a0d0e21e | 60 | static void find_beginning _((void)); |
bbce6d69 | 61 | static void forbid_setid _((char *)); |
a0d0e21e | 62 | static void incpush _((char *)); |
748a9306 | 63 | static void init_ids _((void)); |
a0d0e21e LW |
64 | static void init_debugger _((void)); |
65 | static void init_lexer _((void)); | |
66 | static void init_main_stash _((void)); | |
67 | static void init_perllib _((void)); | |
68 | static void init_postdump_symbols _((int, char **, char **)); | |
69 | static void init_predump_symbols _((void)); | |
70 | static void init_stacks _((void)); | |
6e72f9df | 71 | static void nuke_stacks _((void)); |
a0d0e21e | 72 | static void open_script _((char *, bool, SV *)); |
ab821d7f | 73 | static void usage _((char *)); |
96436eeb | 74 | static void validate_suid _((char *, char*)); |
75 | ||
76 | static int fdscript = -1; | |
79072805 | 77 | |
93a17b20 | 78 | PerlInterpreter * |
79072805 LW |
79 | perl_alloc() |
80 | { | |
93a17b20 | 81 | PerlInterpreter *sv_interp; |
79072805 | 82 | |
8990e307 | 83 | curinterp = 0; |
93a17b20 | 84 | New(53, sv_interp, 1, PerlInterpreter); |
79072805 LW |
85 | return sv_interp; |
86 | } | |
87 | ||
88 | void | |
89 | perl_construct( sv_interp ) | |
93a17b20 | 90 | register PerlInterpreter *sv_interp; |
79072805 LW |
91 | { |
92 | if (!(curinterp = sv_interp)) | |
93 | return; | |
94 | ||
8990e307 | 95 | #ifdef MULTIPLICITY |
93a17b20 | 96 | Zero(sv_interp, 1, PerlInterpreter); |
8990e307 | 97 | #endif |
79072805 LW |
98 | |
99 | /* Init the real globals? */ | |
100 | if (!linestr) { | |
101 | linestr = NEWSV(65,80); | |
ed6116ce | 102 | sv_upgrade(linestr,SVt_PVIV); |
79072805 | 103 | |
6e72f9df | 104 | if (!SvREADONLY(&sv_undef)) { |
105 | SvREADONLY_on(&sv_undef); | |
79072805 | 106 | |
6e72f9df | 107 | sv_setpv(&sv_no,No); |
108 | SvNV(&sv_no); | |
109 | SvREADONLY_on(&sv_no); | |
79072805 | 110 | |
6e72f9df | 111 | sv_setpv(&sv_yes,Yes); |
112 | SvNV(&sv_yes); | |
113 | SvREADONLY_on(&sv_yes); | |
114 | } | |
79072805 | 115 | |
c07a80fd | 116 | nrs = newSVpv("\n", 1); |
117 | rs = SvREFCNT_inc(nrs); | |
118 | ||
44a8e56a | 119 | pidstatus = newHV(); |
120 | ||
79072805 LW |
121 | #ifdef MSDOS |
122 | /* | |
123 | * There is no way we can refer to them from Perl so close them to save | |
124 | * space. The other alternative would be to provide STDAUX and STDPRN | |
125 | * filehandles. | |
126 | */ | |
127 | (void)fclose(stdaux); | |
128 | (void)fclose(stdprn); | |
129 | #endif | |
130 | } | |
131 | ||
8990e307 | 132 | #ifdef MULTIPLICITY |
8ebc5c01 | 133 | I_REINIT; |
134 | perl_destruct_level = 1; | |
135 | #else | |
136 | if(perl_destruct_level > 0) | |
137 | I_REINIT; | |
79072805 LW |
138 | #endif |
139 | ||
748a9306 | 140 | init_ids(); |
a5f75d66 | 141 | |
36477c24 | 142 | SET_NUMERIC_STANDARD(); |
a5f75d66 | 143 | #if defined(SUBVERSION) && SUBVERSION > 0 |
e2666263 | 144 | sprintf(patchlevel, "%7.5f", (double) 5 |
145 | + ((double) PATCHLEVEL / (double) 1000) | |
146 | + ((double) SUBVERSION / (double) 100000)); | |
a5f75d66 | 147 | #else |
e2666263 | 148 | sprintf(patchlevel, "%5.3f", (double) 5 + |
149 | ((double) PATCHLEVEL / (double) 1000)); | |
a5f75d66 | 150 | #endif |
79072805 | 151 | |
ab821d7f | 152 | #if defined(LOCAL_PATCH_COUNT) |
6e72f9df | 153 | localpatches = local_patches; /* For possible -v */ |
ab821d7f | 154 | #endif |
155 | ||
760ac839 LW |
156 | PerlIO_init(); /* Hook to IO system */ |
157 | ||
79072805 | 158 | fdpid = newAV(); /* for remembering popen pids by fd */ |
8990e307 LW |
159 | |
160 | init_stacks(); | |
161 | ENTER; | |
79072805 LW |
162 | } |
163 | ||
164 | void | |
748a9306 | 165 | perl_destruct(sv_interp) |
93a17b20 | 166 | register PerlInterpreter *sv_interp; |
79072805 | 167 | { |
748a9306 | 168 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
8990e307 | 169 | I32 last_sv_count; |
a0d0e21e | 170 | HV *hv; |
8990e307 | 171 | |
79072805 LW |
172 | if (!(curinterp = sv_interp)) |
173 | return; | |
748a9306 LW |
174 | |
175 | destruct_level = perl_destruct_level; | |
4633a7c4 LW |
176 | #ifdef DEBUGGING |
177 | { | |
178 | char *s; | |
5f05dabc | 179 | if (s = getenv("PERL_DESTRUCT_LEVEL")) { |
180 | int i = atoi(s); | |
181 | if (destruct_level < i) | |
182 | destruct_level = i; | |
183 | } | |
4633a7c4 LW |
184 | } |
185 | #endif | |
186 | ||
5f05dabc | 187 | /* unhook hooks which will soon be, or use, destroyed data */ |
188 | SvREFCNT_dec(warnhook); | |
189 | warnhook = Nullsv; | |
190 | SvREFCNT_dec(diehook); | |
191 | diehook = Nullsv; | |
192 | SvREFCNT_dec(parsehook); | |
193 | parsehook = Nullsv; | |
194 | ||
8990e307 | 195 | LEAVE; |
a0d0e21e LW |
196 | FREETMPS; |
197 | ||
6e72f9df | 198 | /* We must account for everything. First the syntax tree. */ |
199 | if (main_root) { | |
200 | curpad = AvARRAY(comppad); | |
201 | op_free(main_root); | |
202 | main_root = 0; | |
a0d0e21e LW |
203 | } |
204 | if (sv_objcount) { | |
205 | /* | |
206 | * Try to destruct global references. We do this first so that the | |
207 | * destructors and destructees still exist. Some sv's might remain. | |
208 | * Non-referenced objects are on their own. | |
209 | */ | |
210 | ||
211 | dirty = TRUE; | |
212 | sv_clean_objs(); | |
8990e307 LW |
213 | } |
214 | ||
a0d0e21e | 215 | if (destruct_level == 0){ |
8990e307 | 216 | |
a0d0e21e LW |
217 | DEBUG_P(debprofdump()); |
218 | ||
219 | /* The exit() function will do everything that needs doing. */ | |
220 | return; | |
221 | } | |
5dd60ef7 | 222 | |
5f05dabc | 223 | /* loosen bonds of global variables */ |
224 | ||
8ebc5c01 | 225 | if(rsfp) { |
226 | (void)PerlIO_close(rsfp); | |
227 | rsfp = Nullfp; | |
228 | } | |
229 | ||
230 | /* Filters for program text */ | |
231 | SvREFCNT_dec(rsfp_filters); | |
232 | rsfp_filters = Nullav; | |
233 | ||
234 | /* switches */ | |
235 | preprocess = FALSE; | |
236 | minus_n = FALSE; | |
237 | minus_p = FALSE; | |
238 | minus_l = FALSE; | |
239 | minus_a = FALSE; | |
240 | minus_F = FALSE; | |
241 | doswitches = FALSE; | |
242 | dowarn = FALSE; | |
243 | doextract = FALSE; | |
244 | sawampersand = FALSE; /* must save all match strings */ | |
245 | sawstudy = FALSE; /* do fbm_instr on all strings */ | |
246 | sawvec = FALSE; | |
247 | unsafe = FALSE; | |
248 | ||
249 | Safefree(inplace); | |
250 | inplace = Nullch; | |
251 | ||
252 | Safefree(e_tmpname); | |
253 | e_tmpname = Nullch; | |
254 | ||
255 | if (e_fp) { | |
256 | PerlIO_close(e_fp); | |
257 | e_fp = Nullfp; | |
258 | } | |
259 | ||
260 | /* magical thingies */ | |
261 | ||
262 | Safefree(ofs); /* $, */ | |
263 | ofs = Nullch; | |
5f05dabc | 264 | |
8ebc5c01 | 265 | Safefree(ors); /* $\ */ |
266 | ors = Nullch; | |
267 | ||
268 | SvREFCNT_dec(nrs); /* $\ helper */ | |
5f05dabc | 269 | nrs = Nullsv; |
270 | ||
8ebc5c01 | 271 | multiline = 0; /* $* */ |
5f05dabc | 272 | |
8ebc5c01 | 273 | SvREFCNT_dec(statname); |
5f05dabc | 274 | statname = Nullsv; |
275 | statgv = Nullgv; | |
5f05dabc | 276 | |
8ebc5c01 | 277 | /* defgv, aka *_ should be taken care of elsewhere */ |
278 | ||
279 | #if 0 /* just about all regexp stuff, seems to be ok */ | |
280 | ||
281 | /* shortcuts to regexp stuff */ | |
282 | leftgv = Nullgv; | |
283 | ampergv = Nullgv; | |
284 | ||
285 | SAVEFREEOP(curpm); | |
286 | SAVEFREEOP(oldlastpm); /* for saving regexp context during debugger */ | |
287 | ||
288 | regprecomp = NULL; /* uncompiled string. */ | |
289 | regparse = NULL; /* Input-scan pointer. */ | |
290 | regxend = NULL; /* End of input for compile */ | |
291 | regnpar = 0; /* () count. */ | |
292 | regcode = NULL; /* Code-emit pointer; ®dummy = don't. */ | |
293 | regsize = 0; /* Code size. */ | |
294 | regnaughty = 0; /* How bad is this pattern? */ | |
295 | regsawback = 0; /* Did we see \1, ...? */ | |
296 | ||
297 | reginput = NULL; /* String-input pointer. */ | |
298 | regbol = NULL; /* Beginning of input, for ^ check. */ | |
299 | regeol = NULL; /* End of input, for $ check. */ | |
300 | regstartp = (char **)NULL; /* Pointer to startp array. */ | |
301 | regendp = (char **)NULL; /* Ditto for endp. */ | |
302 | reglastparen = 0; /* Similarly for lastparen. */ | |
303 | regtill = NULL; /* How far we are required to go. */ | |
304 | regflags = 0; /* are we folding, multilining? */ | |
305 | regprev = (char)NULL; /* char before regbol, \n if none */ | |
306 | ||
307 | #endif /* if 0 */ | |
308 | ||
309 | /* clean up after study() */ | |
310 | SvREFCNT_dec(lastscream); | |
311 | lastscream = Nullsv; | |
312 | Safefree(screamfirst); | |
313 | screamfirst = 0; | |
314 | Safefree(screamnext); | |
315 | screamnext = 0; | |
316 | ||
317 | /* startup and shutdown function lists */ | |
318 | SvREFCNT_dec(beginav); | |
319 | SvREFCNT_dec(endav); | |
5618dfe8 | 320 | beginav = Nullav; |
5618dfe8 CS |
321 | endav = Nullav; |
322 | ||
8ebc5c01 | 323 | /* temp stack during pp_sort() */ |
324 | SvREFCNT_dec(sortstack); | |
325 | sortstack = Nullav; | |
326 | ||
327 | /* shortcuts just get cleared */ | |
328 | envgv = Nullgv; | |
329 | siggv = Nullgv; | |
330 | incgv = Nullgv; | |
331 | errgv = Nullgv; | |
332 | argvgv = Nullgv; | |
333 | argvoutgv = Nullgv; | |
334 | stdingv = Nullgv; | |
335 | last_in_gv = Nullgv; | |
336 | ||
337 | /* reset so print() ends up where we expect */ | |
338 | setdefout(Nullgv); | |
339 | ||
a0d0e21e | 340 | /* Prepare to destruct main symbol table. */ |
5f05dabc | 341 | |
a0d0e21e | 342 | hv = defstash; |
85e6fe83 | 343 | defstash = 0; |
a0d0e21e LW |
344 | SvREFCNT_dec(hv); |
345 | ||
346 | FREETMPS; | |
347 | if (destruct_level >= 2) { | |
348 | if (scopestack_ix != 0) | |
349 | warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); | |
350 | if (savestack_ix != 0) | |
351 | warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); | |
352 | if (tmps_floor != -1) | |
353 | warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); | |
354 | if (cxstack_ix != -1) | |
355 | warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); | |
356 | } | |
8990e307 LW |
357 | |
358 | /* Now absolutely destruct everything, somehow or other, loops or no. */ | |
8990e307 | 359 | last_sv_count = 0; |
6e72f9df | 360 | SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */ |
8990e307 LW |
361 | while (sv_count != 0 && sv_count != last_sv_count) { |
362 | last_sv_count = sv_count; | |
363 | sv_clean_all(); | |
364 | } | |
6e72f9df | 365 | SvFLAGS(strtab) &= ~SVTYPEMASK; |
366 | SvFLAGS(strtab) |= SVt_PVHV; | |
367 | ||
368 | /* Destruct the global string table. */ | |
369 | { | |
370 | /* Yell and reset the HeVAL() slots that are still holding refcounts, | |
371 | * so that sv_free() won't fail on them. | |
372 | */ | |
373 | I32 riter; | |
374 | I32 max; | |
375 | HE *hent; | |
376 | HE **array; | |
377 | ||
378 | riter = 0; | |
379 | max = HvMAX(strtab); | |
380 | array = HvARRAY(strtab); | |
381 | hent = array[0]; | |
382 | for (;;) { | |
383 | if (hent) { | |
384 | warn("Unbalanced string table refcount: (%d) for \"%s\"", | |
385 | HeVAL(hent) - Nullsv, HeKEY(hent)); | |
386 | HeVAL(hent) = Nullsv; | |
387 | hent = HeNEXT(hent); | |
388 | } | |
389 | if (!hent) { | |
390 | if (++riter > max) | |
391 | break; | |
392 | hent = array[riter]; | |
393 | } | |
394 | } | |
395 | } | |
396 | SvREFCNT_dec(strtab); | |
397 | ||
8990e307 LW |
398 | if (sv_count != 0) |
399 | warn("Scalars leaked: %d\n", sv_count); | |
6e72f9df | 400 | |
4633a7c4 | 401 | sv_free_arenas(); |
44a8e56a | 402 | |
403 | /* No SVs have survived, need to clean out */ | |
404 | linestr = NULL; | |
405 | pidstatus = Nullhv; | |
6e72f9df | 406 | if (origfilename) |
407 | Safefree(origfilename); | |
408 | nuke_stacks(); | |
409 | hints = 0; /* Reset hints. Should hints be per-interpreter ? */ | |
410 | ||
a0d0e21e | 411 | DEBUG_P(debprofdump()); |
79072805 LW |
412 | } |
413 | ||
414 | void | |
415 | perl_free(sv_interp) | |
93a17b20 | 416 | PerlInterpreter *sv_interp; |
79072805 LW |
417 | { |
418 | if (!(curinterp = sv_interp)) | |
419 | return; | |
420 | Safefree(sv_interp); | |
421 | } | |
ecfc5424 | 422 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
a0d0e21e LW |
423 | char *getenv _((char *)); /* Usually in <stdlib.h> */ |
424 | #endif | |
79072805 LW |
425 | |
426 | int | |
a0d0e21e | 427 | perl_parse(sv_interp, xsinit, argc, argv, env) |
93a17b20 | 428 | PerlInterpreter *sv_interp; |
a0d0e21e LW |
429 | void (*xsinit)_((void)); |
430 | int argc; | |
431 | char **argv; | |
79072805 | 432 | char **env; |
8d063cd8 | 433 | { |
79072805 | 434 | register SV *sv; |
8d063cd8 | 435 | register char *s; |
1a30305b | 436 | char *scriptname = NULL; |
a0d0e21e | 437 | VOL bool dosearch = FALSE; |
13281fa4 | 438 | char *validarg = ""; |
748a9306 | 439 | AV* comppadlist; |
8d063cd8 | 440 | |
a687059c LW |
441 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
442 | #ifdef IAMSUID | |
443 | #undef IAMSUID | |
463ee0b2 | 444 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
a687059c LW |
445 | setuid perl scripts securely.\n"); |
446 | #endif | |
447 | #endif | |
448 | ||
79072805 LW |
449 | if (!(curinterp = sv_interp)) |
450 | return 255; | |
451 | ||
6e72f9df | 452 | #if defined(NeXT) && defined(__DYNAMIC__) |
453 | _dyld_lookup_and_bind | |
454 | ("__environ", (unsigned long *) &environ_pointer, NULL); | |
455 | #endif /* environ */ | |
456 | ||
ac58e20f LW |
457 | origargv = argv; |
458 | origargc = argc; | |
a0d0e21e | 459 | #ifndef VMS /* VMS doesn't have environ array */ |
fe14fcc3 | 460 | origenviron = environ; |
a0d0e21e | 461 | #endif |
ab821d7f | 462 | e_tmpname = Nullch; |
a0d0e21e LW |
463 | |
464 | if (do_undump) { | |
465 | ||
466 | /* Come here if running an undumped a.out. */ | |
467 | ||
468 | origfilename = savepv(argv[0]); | |
469 | do_undump = FALSE; | |
470 | cxstack_ix = -1; /* start label stack again */ | |
748a9306 | 471 | init_ids(); |
a0d0e21e LW |
472 | init_postdump_symbols(argc,argv,env); |
473 | return 0; | |
474 | } | |
475 | ||
476 | if (main_root) | |
477 | op_free(main_root); | |
478 | main_root = 0; | |
79072805 | 479 | |
a5f75d66 | 480 | switch (Sigsetjmp(top_env,1)) { |
79072805 | 481 | case 1: |
748a9306 | 482 | #ifdef VMS |
79072805 | 483 | statusvalue = 255; |
748a9306 LW |
484 | #else |
485 | statusvalue = 1; | |
486 | #endif | |
79072805 | 487 | case 2: |
8990e307 LW |
488 | curstash = defstash; |
489 | if (endav) | |
490 | calllist(endav); | |
79072805 LW |
491 | return(statusvalue); /* my_exit() was called */ |
492 | case 3: | |
760ac839 | 493 | PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); |
8990e307 | 494 | return 1; |
79072805 LW |
495 | } |
496 | ||
79072805 LW |
497 | sv_setpvn(linestr,"",0); |
498 | sv = newSVpv("",0); /* first used for -I flags */ | |
8990e307 | 499 | SAVEFREESV(sv); |
79072805 | 500 | init_main_stash(); |
33b78306 | 501 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
502 | if (argv[0][0] != '-' || !argv[0][1]) |
503 | break; | |
13281fa4 LW |
504 | #ifdef DOSUID |
505 | if (*validarg) | |
506 | validarg = " PHOOEY "; | |
507 | else | |
508 | validarg = argv[0]; | |
509 | #endif | |
510 | s = argv[0]+1; | |
8d063cd8 | 511 | reswitch: |
13281fa4 | 512 | switch (*s) { |
27e2fb84 | 513 | case '0': |
2304df62 | 514 | case 'F': |
378cc40b | 515 | case 'a': |
33b78306 | 516 | case 'c': |
a687059c | 517 | case 'd': |
8d063cd8 | 518 | case 'D': |
4633a7c4 | 519 | case 'h': |
33b78306 | 520 | case 'i': |
fe14fcc3 | 521 | case 'l': |
1a30305b | 522 | case 'M': |
523 | case 'm': | |
33b78306 LW |
524 | case 'n': |
525 | case 'p': | |
79072805 | 526 | case 's': |
463ee0b2 | 527 | case 'T': |
33b78306 LW |
528 | case 'u': |
529 | case 'U': | |
530 | case 'v': | |
531 | case 'w': | |
532 | if (s = moreswitches(s)) | |
533 | goto reswitch; | |
8d063cd8 | 534 | break; |
33b78306 | 535 | |
8d063cd8 | 536 | case 'e': |
a687059c | 537 | if (euid != uid || egid != gid) |
463ee0b2 | 538 | croak("No -e allowed in setuid scripts"); |
8d063cd8 | 539 | if (!e_fp) { |
a0d0e21e | 540 | e_tmpname = savepv(TMPPATH); |
a687059c | 541 | (void)mktemp(e_tmpname); |
83025b21 | 542 | if (!*e_tmpname) |
463ee0b2 | 543 | croak("Can't mktemp()"); |
760ac839 | 544 | e_fp = PerlIO_open(e_tmpname,"w"); |
33b78306 | 545 | if (!e_fp) |
463ee0b2 | 546 | croak("Cannot open temporary file"); |
8d063cd8 | 547 | } |
552a7a9b | 548 | if (*++s) |
549 | PerlIO_puts(e_fp,s); | |
550 | else if (argv[1]) { | |
760ac839 | 551 | PerlIO_puts(e_fp,argv[1]); |
33b78306 LW |
552 | argc--,argv++; |
553 | } | |
552a7a9b | 554 | else |
555 | croak("No code specified for -e"); | |
760ac839 | 556 | (void)PerlIO_putc(e_fp,'\n'); |
8d063cd8 LW |
557 | break; |
558 | case 'I': | |
bbce6d69 | 559 | forbid_setid("-I"); |
79072805 LW |
560 | sv_catpv(sv,"-"); |
561 | sv_catpv(sv,s); | |
562 | sv_catpv(sv," "); | |
a687059c | 563 | if (*++s) { |
a0d0e21e | 564 | av_push(GvAVn(incgv),newSVpv(s,0)); |
378cc40b | 565 | } |
33b78306 | 566 | else if (argv[1]) { |
a0d0e21e | 567 | av_push(GvAVn(incgv),newSVpv(argv[1],0)); |
79072805 | 568 | sv_catpv(sv,argv[1]); |
8d063cd8 | 569 | argc--,argv++; |
79072805 | 570 | sv_catpv(sv," "); |
8d063cd8 LW |
571 | } |
572 | break; | |
8d063cd8 | 573 | case 'P': |
bbce6d69 | 574 | forbid_setid("-P"); |
8d063cd8 | 575 | preprocess = TRUE; |
13281fa4 | 576 | s++; |
8d063cd8 | 577 | goto reswitch; |
378cc40b | 578 | case 'S': |
bbce6d69 | 579 | forbid_setid("-S"); |
378cc40b | 580 | dosearch = TRUE; |
13281fa4 | 581 | s++; |
378cc40b | 582 | goto reswitch; |
1a30305b | 583 | case 'V': |
584 | if (!preambleav) | |
585 | preambleav = newAV(); | |
586 | av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); | |
587 | if (*++s != ':') { | |
6e72f9df | 588 | Sv = newSVpv("print myconfig();",0); |
589 | #ifdef VMS | |
590 | sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\","); | |
591 | #else | |
592 | sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\","); | |
593 | #endif | |
594 | #if defined(DEBUGGING) || defined(NOEMBED) || defined(MULTIPLICITY) | |
595 | strcpy(buf,"\" Compile-time options:"); | |
596 | # ifdef DEBUGGING | |
597 | strcat(buf," DEBUGGING"); | |
598 | # endif | |
599 | # ifdef NOEMBED | |
600 | strcat(buf," NOEMBED"); | |
601 | # endif | |
602 | # ifdef MULTIPLICITY | |
603 | strcat(buf," MULTIPLICITY"); | |
604 | # endif | |
605 | strcat(buf,"\\n\","); | |
606 | sv_catpv(Sv,buf); | |
607 | #endif | |
608 | #if defined(LOCAL_PATCH_COUNT) | |
609 | if (LOCAL_PATCH_COUNT > 0) | |
610 | { int i; | |
611 | sv_catpv(Sv,"print \" Locally applied patches:\\n\","); | |
612 | for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { | |
613 | if (localpatches[i]) { | |
614 | sprintf(buf,"\" \\t%s\\n\",",localpatches[i]); | |
615 | sv_catpv(Sv,buf); | |
616 | } | |
617 | } | |
618 | } | |
619 | #endif | |
620 | sprintf(buf,"\" Built under %s\\n\",",OSNAME); | |
621 | sv_catpv(Sv,buf); | |
622 | #ifdef __DATE__ | |
623 | # ifdef __TIME__ | |
624 | sprintf(buf,"\" Compiled at %s %s\\n\"",__DATE__,__TIME__); | |
625 | # else | |
626 | sprintf(buf,"\" Compiled on %s\\n\"",__DATE__); | |
627 | # endif | |
628 | sv_catpv(Sv,buf); | |
629 | #endif | |
630 | sv_catpv(Sv,"; $\"=\"\\n \"; print \" \\@INC:\\n @INC\\n\""); | |
1a30305b | 631 | } |
632 | else { | |
633 | Sv = newSVpv("config_vars(qw(",0); | |
634 | sv_catpv(Sv, ++s); | |
635 | sv_catpv(Sv, "))"); | |
636 | s += strlen(s); | |
637 | } | |
638 | av_push(preambleav, Sv); | |
c07a80fd | 639 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
1a30305b | 640 | goto reswitch; |
33b78306 LW |
641 | case 'x': |
642 | doextract = TRUE; | |
13281fa4 | 643 | s++; |
33b78306 | 644 | if (*s) |
a0d0e21e | 645 | cddir = savepv(s); |
33b78306 | 646 | break; |
8d063cd8 LW |
647 | case '-': |
648 | argc--,argv++; | |
649 | goto switch_end; | |
650 | case 0: | |
651 | break; | |
652 | default: | |
463ee0b2 | 653 | croak("Unrecognized switch: -%s",s); |
8d063cd8 LW |
654 | } |
655 | } | |
656 | switch_end: | |
1a30305b | 657 | if (!scriptname) |
658 | scriptname = argv[0]; | |
8d063cd8 | 659 | if (e_fp) { |
760ac839 | 660 | if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp)) |
2304df62 | 661 | croak("Can't write to temp file for -e: %s", Strerror(errno)); |
ab821d7f | 662 | e_fp = Nullfp; |
8d063cd8 | 663 | argc++,argv--; |
45d8adaa | 664 | scriptname = e_tmpname; |
8d063cd8 | 665 | } |
79072805 LW |
666 | else if (scriptname == Nullch) { |
667 | #ifdef MSDOS | |
760ac839 | 668 | if ( isatty(PerlIO_fileno(PerlIO_stdin())) ) |
55497cff | 669 | moreswitches("h"); |
fe14fcc3 | 670 | #endif |
79072805 LW |
671 | scriptname = "-"; |
672 | } | |
fe14fcc3 | 673 | |
79072805 | 674 | init_perllib(); |
8d063cd8 | 675 | |
79072805 | 676 | open_script(scriptname,dosearch,sv); |
8d063cd8 | 677 | |
96436eeb | 678 | validate_suid(validarg, scriptname); |
378cc40b | 679 | |
79072805 LW |
680 | if (doextract) |
681 | find_beginning(); | |
682 | ||
748a9306 LW |
683 | compcv = (CV*)NEWSV(1104,0); |
684 | sv_upgrade((SV *)compcv, SVt_PVCV); | |
07055b4c | 685 | CvUNIQUE_on(compcv); |
748a9306 | 686 | |
6e72f9df | 687 | comppad = newAV(); |
79072805 LW |
688 | av_push(comppad, Nullsv); |
689 | curpad = AvARRAY(comppad); | |
6e72f9df | 690 | comppad_name = newAV(); |
8990e307 LW |
691 | comppad_name_fill = 0; |
692 | min_intro_pending = 0; | |
79072805 LW |
693 | padix = 0; |
694 | ||
748a9306 LW |
695 | comppadlist = newAV(); |
696 | AvREAL_off(comppadlist); | |
8e07c86e AD |
697 | av_store(comppadlist, 0, (SV*)comppad_name); |
698 | av_store(comppadlist, 1, (SV*)comppad); | |
748a9306 LW |
699 | CvPADLIST(compcv) = comppadlist; |
700 | ||
6e72f9df | 701 | boot_core_UNIVERSAL(); |
a0d0e21e LW |
702 | if (xsinit) |
703 | (*xsinit)(); /* in case linked C routines want magical variables */ | |
748a9306 LW |
704 | #ifdef VMS |
705 | init_os_extras(); | |
706 | #endif | |
93a17b20 | 707 | |
93a17b20 | 708 | init_predump_symbols(); |
8990e307 LW |
709 | if (!do_undump) |
710 | init_postdump_symbols(argc,argv,env); | |
93a17b20 | 711 | |
79072805 LW |
712 | init_lexer(); |
713 | ||
714 | /* now parse the script */ | |
715 | ||
716 | error_count = 0; | |
717 | if (yyparse() || error_count) { | |
718 | if (minus_c) | |
463ee0b2 | 719 | croak("%s had compilation errors.\n", origfilename); |
79072805 | 720 | else { |
463ee0b2 | 721 | croak("Execution of %s aborted due to compilation errors.\n", |
79072805 | 722 | origfilename); |
378cc40b | 723 | } |
79072805 LW |
724 | } |
725 | curcop->cop_line = 0; | |
726 | curstash = defstash; | |
727 | preprocess = FALSE; | |
ab821d7f | 728 | if (e_tmpname) { |
79072805 | 729 | (void)UNLINK(e_tmpname); |
ab821d7f | 730 | Safefree(e_tmpname); |
731 | e_tmpname = Nullch; | |
378cc40b | 732 | } |
a687059c | 733 | |
93a17b20 | 734 | /* now that script is parsed, we can modify record separator */ |
c07a80fd | 735 | SvREFCNT_dec(rs); |
736 | rs = SvREFCNT_inc(nrs); | |
737 | sv_setsv(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs); | |
45d8adaa | 738 | |
79072805 LW |
739 | if (do_undump) |
740 | my_unexec(); | |
741 | ||
8990e307 LW |
742 | if (dowarn) |
743 | gv_check(defstash); | |
744 | ||
a0d0e21e LW |
745 | LEAVE; |
746 | FREETMPS; | |
c07a80fd | 747 | |
748 | #ifdef DEBUGGING_MSTATS | |
749 | if ((s=getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) | |
750 | dump_mstats("after compilation:"); | |
751 | #endif | |
752 | ||
a0d0e21e LW |
753 | ENTER; |
754 | restartop = 0; | |
79072805 LW |
755 | return 0; |
756 | } | |
757 | ||
758 | int | |
759 | perl_run(sv_interp) | |
93a17b20 | 760 | PerlInterpreter *sv_interp; |
79072805 LW |
761 | { |
762 | if (!(curinterp = sv_interp)) | |
763 | return 255; | |
a5f75d66 | 764 | switch (Sigsetjmp(top_env,1)) { |
79072805 LW |
765 | case 1: |
766 | cxstack_ix = -1; /* start context stack again */ | |
767 | break; | |
768 | case 2: | |
769 | curstash = defstash; | |
93a17b20 LW |
770 | if (endav) |
771 | calllist(endav); | |
a0d0e21e | 772 | FREETMPS; |
c07a80fd | 773 | #ifdef DEBUGGING_MSTATS |
774 | if (getenv("PERL_DEBUG_MSTATS")) | |
775 | dump_mstats("after execution: "); | |
776 | #endif | |
93a17b20 | 777 | return(statusvalue); /* my_exit() was called */ |
79072805 LW |
778 | case 3: |
779 | if (!restartop) { | |
760ac839 | 780 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
a0d0e21e | 781 | FREETMPS; |
8990e307 | 782 | return 1; |
83025b21 | 783 | } |
6e72f9df | 784 | if (curstack != mainstack) { |
79072805 | 785 | dSP; |
6e72f9df | 786 | SWITCHSTACK(curstack, mainstack); |
79072805 LW |
787 | } |
788 | break; | |
8d063cd8 | 789 | } |
79072805 | 790 | |
760ac839 | 791 | DEBUG_r(PerlIO_printf(PerlIO_stderr(), "%s $` $& $' support.\n", |
6e72f9df | 792 | sawampersand ? "Enabling" : "Omitting")); |
793 | ||
79072805 LW |
794 | if (!restartop) { |
795 | DEBUG_x(dump_all()); | |
760ac839 | 796 | DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n")); |
79072805 LW |
797 | |
798 | if (minus_c) { | |
760ac839 | 799 | PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename); |
79072805 LW |
800 | my_exit(0); |
801 | } | |
a0d0e21e LW |
802 | if (perldb && DBsingle) |
803 | sv_setiv(DBsingle, 1); | |
45d8adaa | 804 | } |
79072805 LW |
805 | |
806 | /* do it */ | |
807 | ||
808 | if (restartop) { | |
809 | op = restartop; | |
810 | restartop = 0; | |
ab821d7f | 811 | runops(); |
79072805 LW |
812 | } |
813 | else if (main_start) { | |
814 | op = main_start; | |
ab821d7f | 815 | runops(); |
79072805 | 816 | } |
79072805 LW |
817 | |
818 | my_exit(0); | |
a0d0e21e | 819 | return 0; |
79072805 LW |
820 | } |
821 | ||
822 | void | |
823 | my_exit(status) | |
748a9306 | 824 | U32 status; |
79072805 | 825 | { |
a0d0e21e LW |
826 | register CONTEXT *cx; |
827 | I32 gimme; | |
828 | SV **newsp; | |
829 | ||
748a9306 | 830 | statusvalue = FIXSTATUS(status); |
a0d0e21e LW |
831 | if (cxstack_ix >= 0) { |
832 | if (cxstack_ix > 0) | |
833 | dounwind(0); | |
834 | POPBLOCK(cx,curpm); | |
835 | LEAVE; | |
836 | } | |
a5f75d66 | 837 | Siglongjmp(top_env, 2); |
79072805 LW |
838 | } |
839 | ||
a0d0e21e LW |
840 | SV* |
841 | perl_get_sv(name, create) | |
842 | char* name; | |
843 | I32 create; | |
844 | { | |
845 | GV* gv = gv_fetchpv(name, create, SVt_PV); | |
846 | if (gv) | |
847 | return GvSV(gv); | |
848 | return Nullsv; | |
849 | } | |
850 | ||
851 | AV* | |
852 | perl_get_av(name, create) | |
853 | char* name; | |
854 | I32 create; | |
855 | { | |
856 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); | |
857 | if (create) | |
858 | return GvAVn(gv); | |
859 | if (gv) | |
860 | return GvAV(gv); | |
861 | return Nullav; | |
862 | } | |
863 | ||
864 | HV* | |
865 | perl_get_hv(name, create) | |
866 | char* name; | |
867 | I32 create; | |
868 | { | |
869 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); | |
870 | if (create) | |
871 | return GvHVn(gv); | |
872 | if (gv) | |
873 | return GvHV(gv); | |
874 | return Nullhv; | |
875 | } | |
876 | ||
877 | CV* | |
878 | perl_get_cv(name, create) | |
879 | char* name; | |
880 | I32 create; | |
881 | { | |
882 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); | |
8ebc5c01 | 883 | if (create && !GvCVu(gv)) |
fa83b5b6 | 884 | return newSUB(start_subparse(0), |
a0d0e21e | 885 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
4633a7c4 | 886 | Nullop, |
a0d0e21e LW |
887 | Nullop); |
888 | if (gv) | |
8ebc5c01 | 889 | return GvCVu(gv); |
a0d0e21e LW |
890 | return Nullcv; |
891 | } | |
892 | ||
79072805 LW |
893 | /* Be sure to refetch the stack pointer after calling these routines. */ |
894 | ||
a0d0e21e LW |
895 | I32 |
896 | perl_call_argv(subname, flags, argv) | |
8990e307 | 897 | char *subname; |
a0d0e21e LW |
898 | I32 flags; /* See G_* flags in cop.h */ |
899 | register char **argv; /* null terminated arg list */ | |
8990e307 | 900 | { |
a0d0e21e | 901 | dSP; |
8990e307 | 902 | |
a0d0e21e LW |
903 | PUSHMARK(sp); |
904 | if (argv) { | |
8990e307 | 905 | while (*argv) { |
a0d0e21e | 906 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
8990e307 LW |
907 | argv++; |
908 | } | |
a0d0e21e | 909 | PUTBACK; |
8990e307 | 910 | } |
a0d0e21e | 911 | return perl_call_pv(subname, flags); |
8990e307 LW |
912 | } |
913 | ||
a0d0e21e LW |
914 | I32 |
915 | perl_call_pv(subname, flags) | |
916 | char *subname; /* name of the subroutine */ | |
917 | I32 flags; /* See G_* flags in cop.h */ | |
918 | { | |
919 | return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); | |
920 | } | |
921 | ||
922 | I32 | |
923 | perl_call_method(methname, flags) | |
924 | char *methname; /* name of the subroutine */ | |
925 | I32 flags; /* See G_* flags in cop.h */ | |
926 | { | |
927 | dSP; | |
928 | OP myop; | |
929 | if (!op) | |
930 | op = &myop; | |
931 | XPUSHs(sv_2mortal(newSVpv(methname,0))); | |
932 | PUTBACK; | |
933 | pp_method(); | |
934 | return perl_call_sv(*stack_sp--, flags); | |
935 | } | |
936 | ||
937 | /* May be called with any of a CV, a GV, or an SV containing the name. */ | |
938 | I32 | |
939 | perl_call_sv(sv, flags) | |
940 | SV* sv; | |
941 | I32 flags; /* See G_* flags in cop.h */ | |
942 | { | |
943 | LOGOP myop; /* fake syntax tree node */ | |
944 | SV** sp = stack_sp; | |
945 | I32 oldmark = TOPMARK; | |
946 | I32 retval; | |
a5f75d66 | 947 | Sigjmp_buf oldtop; |
a0d0e21e | 948 | I32 oldscope; |
6e72f9df | 949 | static CV *DBcv; |
a0d0e21e LW |
950 | |
951 | if (flags & G_DISCARD) { | |
952 | ENTER; | |
953 | SAVETMPS; | |
954 | } | |
955 | ||
956 | SAVESPTR(op); | |
957 | op = (OP*)&myop; | |
958 | Zero(op, 1, LOGOP); | |
959 | EXTEND(stack_sp, 1); | |
960 | *++stack_sp = sv; | |
961 | oldscope = scopestack_ix; | |
962 | ||
963 | if (!(flags & G_NOARGS)) | |
964 | myop.op_flags = OPf_STACKED; | |
965 | myop.op_next = Nullop; | |
966 | myop.op_flags |= OPf_KNOW; | |
967 | if (flags & G_ARRAY) | |
968 | myop.op_flags |= OPf_LIST; | |
969 | ||
36477c24 | 970 | if (perldb && curstash != debstash |
971 | /* Handle first BEGIN of -d. */ | |
972 | && (DBcv || (DBcv = GvCV(DBsub))) | |
973 | /* Try harder, since this may have been a sighandler, thus | |
974 | * curstash may be meaningless. */ | |
975 | && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash)) | |
6e72f9df | 976 | op->op_private |= OPpENTERSUB_DB; |
977 | ||
a0d0e21e | 978 | if (flags & G_EVAL) { |
a5f75d66 | 979 | Copy(top_env, oldtop, 1, Sigjmp_buf); |
a0d0e21e LW |
980 | |
981 | cLOGOP->op_other = op; | |
982 | markstack_ptr--; | |
4633a7c4 LW |
983 | /* we're trying to emulate pp_entertry() here */ |
984 | { | |
985 | register CONTEXT *cx; | |
986 | I32 gimme = GIMME; | |
987 | ||
988 | ENTER; | |
989 | SAVETMPS; | |
990 | ||
991 | push_return(op->op_next); | |
992 | PUSHBLOCK(cx, CXt_EVAL, stack_sp); | |
993 | PUSHEVAL(cx, 0, 0); | |
994 | eval_root = op; /* Only needed so that goto works right. */ | |
995 | ||
996 | in_eval = 1; | |
997 | if (flags & G_KEEPERR) | |
998 | in_eval |= 4; | |
999 | else | |
1000 | sv_setpv(GvSV(errgv),""); | |
1001 | } | |
a0d0e21e LW |
1002 | markstack_ptr++; |
1003 | ||
1004 | restart: | |
a5f75d66 | 1005 | switch (Sigsetjmp(top_env,1)) { |
a0d0e21e LW |
1006 | case 0: |
1007 | break; | |
1008 | case 1: | |
748a9306 | 1009 | #ifdef VMS |
a0d0e21e | 1010 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
1011 | #else |
1012 | statusvalue = 1; | |
1013 | #endif | |
a0d0e21e LW |
1014 | /* FALL THROUGH */ |
1015 | case 2: | |
1016 | /* my_exit() was called */ | |
1017 | curstash = defstash; | |
1018 | FREETMPS; | |
a5f75d66 | 1019 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
a0d0e21e LW |
1020 | if (statusvalue) |
1021 | croak("Callback called exit"); | |
1022 | my_exit(statusvalue); | |
1023 | /* NOTREACHED */ | |
1024 | case 3: | |
1025 | if (restartop) { | |
1026 | op = restartop; | |
1027 | restartop = 0; | |
1028 | goto restart; | |
1029 | } | |
1030 | stack_sp = stack_base + oldmark; | |
1031 | if (flags & G_ARRAY) | |
1032 | retval = 0; | |
1033 | else { | |
1034 | retval = 1; | |
1035 | *++stack_sp = &sv_undef; | |
1036 | } | |
1037 | goto cleanup; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | if (op == (OP*)&myop) | |
1042 | op = pp_entersub(); | |
1043 | if (op) | |
ab821d7f | 1044 | runops(); |
a0d0e21e | 1045 | retval = stack_sp - (stack_base + oldmark); |
4633a7c4 LW |
1046 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
1047 | sv_setpv(GvSV(errgv),""); | |
a0d0e21e LW |
1048 | |
1049 | cleanup: | |
1050 | if (flags & G_EVAL) { | |
1051 | if (scopestack_ix > oldscope) { | |
a0a2876f LW |
1052 | SV **newsp; |
1053 | PMOP *newpm; | |
1054 | I32 gimme; | |
1055 | register CONTEXT *cx; | |
1056 | I32 optype; | |
1057 | ||
1058 | POPBLOCK(cx,newpm); | |
1059 | POPEVAL(cx); | |
1060 | pop_return(); | |
1061 | curpm = newpm; | |
1062 | LEAVE; | |
a0d0e21e | 1063 | } |
a5f75d66 | 1064 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
a0d0e21e LW |
1065 | } |
1066 | if (flags & G_DISCARD) { | |
1067 | stack_sp = stack_base + oldmark; | |
1068 | retval = 0; | |
1069 | FREETMPS; | |
1070 | LEAVE; | |
1071 | } | |
1072 | return retval; | |
1073 | } | |
1074 | ||
6e72f9df | 1075 | /* Eval a string. The G_EVAL flag is always assumed. */ |
8990e307 | 1076 | |
a0d0e21e | 1077 | I32 |
4633a7c4 | 1078 | perl_eval_sv(sv, flags) |
8990e307 | 1079 | SV* sv; |
4633a7c4 | 1080 | I32 flags; /* See G_* flags in cop.h */ |
a0d0e21e LW |
1081 | { |
1082 | UNOP myop; /* fake syntax tree node */ | |
4633a7c4 LW |
1083 | SV** sp = stack_sp; |
1084 | I32 oldmark = sp - stack_base; | |
1085 | I32 retval; | |
a5f75d66 | 1086 | Sigjmp_buf oldtop; |
4633a7c4 | 1087 | I32 oldscope; |
79072805 | 1088 | |
4633a7c4 LW |
1089 | if (flags & G_DISCARD) { |
1090 | ENTER; | |
1091 | SAVETMPS; | |
1092 | } | |
1093 | ||
79072805 | 1094 | SAVESPTR(op); |
79072805 | 1095 | op = (OP*)&myop; |
a0d0e21e | 1096 | Zero(op, 1, UNOP); |
4633a7c4 LW |
1097 | EXTEND(stack_sp, 1); |
1098 | *++stack_sp = sv; | |
1099 | oldscope = scopestack_ix; | |
79072805 | 1100 | |
4633a7c4 LW |
1101 | if (!(flags & G_NOARGS)) |
1102 | myop.op_flags = OPf_STACKED; | |
79072805 | 1103 | myop.op_next = Nullop; |
6e72f9df | 1104 | myop.op_type = OP_ENTEREVAL; |
4633a7c4 | 1105 | myop.op_flags |= OPf_KNOW; |
6e72f9df | 1106 | if (flags & G_KEEPERR) |
1107 | myop.op_flags |= OPf_SPECIAL; | |
4633a7c4 | 1108 | if (flags & G_ARRAY) |
6e72f9df | 1109 | myop.op_flags |= OPf_LIST; |
79072805 | 1110 | |
a5f75d66 | 1111 | Copy(top_env, oldtop, 1, Sigjmp_buf); |
4633a7c4 LW |
1112 | |
1113 | restart: | |
a5f75d66 | 1114 | switch (Sigsetjmp(top_env,1)) { |
4633a7c4 LW |
1115 | case 0: |
1116 | break; | |
1117 | case 1: | |
1118 | #ifdef VMS | |
1119 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ | |
1120 | #else | |
1121 | statusvalue = 1; | |
1122 | #endif | |
1123 | /* FALL THROUGH */ | |
1124 | case 2: | |
1125 | /* my_exit() was called */ | |
1126 | curstash = defstash; | |
1127 | FREETMPS; | |
a5f75d66 | 1128 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
4633a7c4 LW |
1129 | if (statusvalue) |
1130 | croak("Callback called exit"); | |
1131 | my_exit(statusvalue); | |
1132 | /* NOTREACHED */ | |
1133 | case 3: | |
1134 | if (restartop) { | |
1135 | op = restartop; | |
1136 | restartop = 0; | |
1137 | goto restart; | |
1138 | } | |
1139 | stack_sp = stack_base + oldmark; | |
1140 | if (flags & G_ARRAY) | |
1141 | retval = 0; | |
1142 | else { | |
1143 | retval = 1; | |
1144 | *++stack_sp = &sv_undef; | |
1145 | } | |
1146 | goto cleanup; | |
1147 | } | |
1148 | ||
1149 | if (op == (OP*)&myop) | |
1150 | op = pp_entereval(); | |
1151 | if (op) | |
ab821d7f | 1152 | runops(); |
4633a7c4 | 1153 | retval = stack_sp - (stack_base + oldmark); |
6e72f9df | 1154 | if (!(flags & G_KEEPERR)) |
4633a7c4 LW |
1155 | sv_setpv(GvSV(errgv),""); |
1156 | ||
1157 | cleanup: | |
a5f75d66 | 1158 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
4633a7c4 LW |
1159 | if (flags & G_DISCARD) { |
1160 | stack_sp = stack_base + oldmark; | |
1161 | retval = 0; | |
1162 | FREETMPS; | |
1163 | LEAVE; | |
1164 | } | |
1165 | return retval; | |
1166 | } | |
1167 | ||
1168 | /* Require a module. */ | |
1169 | ||
1170 | void | |
1171 | perl_require_pv(pv) | |
1172 | char* pv; | |
1173 | { | |
1174 | SV* sv = sv_newmortal(); | |
1175 | sv_setpv(sv, "require '"); | |
1176 | sv_catpv(sv, pv); | |
1177 | sv_catpv(sv, "'"); | |
1178 | perl_eval_sv(sv, G_DISCARD); | |
79072805 LW |
1179 | } |
1180 | ||
79072805 | 1181 | void |
79072805 LW |
1182 | magicname(sym,name,namlen) |
1183 | char *sym; | |
1184 | char *name; | |
1185 | I32 namlen; | |
1186 | { | |
1187 | register GV *gv; | |
1188 | ||
85e6fe83 | 1189 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
79072805 LW |
1190 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
1191 | } | |
1192 | ||
748a9306 LW |
1193 | #if defined(DOSISH) |
1194 | # define PERLLIB_SEP ';' | |
79072805 | 1195 | #else |
232e078e AD |
1196 | # if defined(VMS) |
1197 | # define PERLLIB_SEP '|' | |
1198 | # else | |
748a9306 | 1199 | # define PERLLIB_SEP ':' |
232e078e | 1200 | # endif |
79072805 | 1201 | #endif |
760ac839 LW |
1202 | #ifndef PERLLIB_MANGLE |
1203 | # define PERLLIB_MANGLE(s,n) (s) | |
1204 | #endif | |
79072805 LW |
1205 | |
1206 | static void | |
1207 | incpush(p) | |
1208 | char *p; | |
1209 | { | |
1210 | char *s; | |
1211 | ||
1212 | if (!p) | |
1213 | return; | |
1214 | ||
1215 | /* Break at all separators */ | |
1216 | while (*p) { | |
1217 | /* First, skip any consecutive separators */ | |
1218 | while ( *p == PERLLIB_SEP ) { | |
1219 | /* Uncomment the next line for PATH semantics */ | |
a0d0e21e | 1220 | /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ |
79072805 LW |
1221 | p++; |
1222 | } | |
93a17b20 | 1223 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
760ac839 LW |
1224 | av_push(GvAVn(incgv), newSVpv(PERLLIB_MANGLE(p, (STRLEN)(s - p)), |
1225 | (STRLEN)(s - p))); | |
79072805 LW |
1226 | p = s + 1; |
1227 | } else { | |
760ac839 | 1228 | av_push(GvAVn(incgv), newSVpv(PERLLIB_MANGLE(p, 0), 0)); |
79072805 LW |
1229 | break; |
1230 | } | |
1231 | } | |
1232 | } | |
1233 | ||
ab821d7f | 1234 | static void |
1a30305b | 1235 | usage(name) /* XXX move this out into a module ? */ |
4633a7c4 LW |
1236 | char *name; |
1237 | { | |
ab821d7f | 1238 | /* This message really ought to be max 23 lines. |
1239 | * Removed -h because the user already knows that opton. Others? */ | |
1240 | printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name); | |
4633a7c4 | 1241 | printf("\n -0[octal] specify record separator (\\0, if no argument)"); |
ab821d7f | 1242 | printf("\n -a autosplit mode with -n or -p (splits $_ into @F)"); |
4633a7c4 | 1243 | printf("\n -c check syntax only (runs BEGIN and END blocks)"); |
1a30305b | 1244 | printf("\n -d[:debugger] run scripts under debugger"); |
4633a7c4 | 1245 | printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)"); |
ab821d7f | 1246 | printf("\n -e 'command' one line of script. Several -e's allowed. Omit [programfile]."); |
1247 | printf("\n -F/pattern/ split() pattern for autosplit (-a). The //'s are optional."); | |
4633a7c4 | 1248 | printf("\n -i[extension] edit <> files in place (make backup if extension supplied)"); |
ab821d7f | 1249 | printf("\n -Idirectory specify @INC/#include directory (may be used more then once)"); |
4633a7c4 | 1250 | printf("\n -l[octal] enable line ending processing, specifies line teminator"); |
ab821d7f | 1251 | printf("\n -[mM][-]module.. executes `use/no module...' before executing your script."); |
4633a7c4 LW |
1252 | printf("\n -n assume 'while (<>) { ... }' loop arround your script"); |
1253 | printf("\n -p assume loop like -n but print line also like sed"); | |
1254 | printf("\n -P run script through C preprocessor before compilation"); | |
4633a7c4 LW |
1255 | printf("\n -s enable some switch parsing for switches after script name"); |
1256 | printf("\n -S look for the script using PATH environment variable"); | |
1257 | printf("\n -T turn on tainting checks"); | |
1258 | printf("\n -u dump core after parsing script"); | |
1259 | printf("\n -U allow unsafe operations"); | |
1260 | printf("\n -v print version number and patchlevel of perl"); | |
1a30305b | 1261 | printf("\n -V[:variable] print perl configuration information"); |
ab821d7f | 1262 | printf("\n -w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT."); |
4633a7c4 LW |
1263 | printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); |
1264 | } | |
1265 | ||
79072805 LW |
1266 | /* This routine handles any switches that can be given during run */ |
1267 | ||
1268 | char * | |
1269 | moreswitches(s) | |
1270 | char *s; | |
1271 | { | |
1272 | I32 numlen; | |
c07a80fd | 1273 | U32 rschar; |
79072805 LW |
1274 | |
1275 | switch (*s) { | |
1276 | case '0': | |
c07a80fd | 1277 | rschar = scan_oct(s, 4, &numlen); |
1278 | SvREFCNT_dec(nrs); | |
1279 | if (rschar & ~((U8)~0)) | |
1280 | nrs = &sv_undef; | |
1281 | else if (!rschar && numlen >= 2) | |
1282 | nrs = newSVpv("", 0); | |
1283 | else { | |
1284 | char ch = rschar; | |
1285 | nrs = newSVpv(&ch, 1); | |
79072805 LW |
1286 | } |
1287 | return s + numlen; | |
2304df62 AD |
1288 | case 'F': |
1289 | minus_F = TRUE; | |
a0d0e21e | 1290 | splitstr = savepv(s + 1); |
2304df62 AD |
1291 | s += strlen(s); |
1292 | return s; | |
79072805 LW |
1293 | case 'a': |
1294 | minus_a = TRUE; | |
1295 | s++; | |
1296 | return s; | |
1297 | case 'c': | |
1298 | minus_c = TRUE; | |
1299 | s++; | |
1300 | return s; | |
1301 | case 'd': | |
bbce6d69 | 1302 | forbid_setid("-d"); |
4633a7c4 | 1303 | s++; |
c07a80fd | 1304 | if (*s == ':' || *s == '=') { |
4633a7c4 LW |
1305 | sprintf(buf, "use Devel::%s;", ++s); |
1306 | s += strlen(s); | |
1307 | my_setenv("PERL5DB",buf); | |
1308 | } | |
a0d0e21e LW |
1309 | if (!perldb) { |
1310 | perldb = TRUE; | |
1311 | init_debugger(); | |
1312 | } | |
79072805 LW |
1313 | return s; |
1314 | case 'D': | |
1315 | #ifdef DEBUGGING | |
bbce6d69 | 1316 | forbid_setid("-D"); |
79072805 | 1317 | if (isALPHA(s[1])) { |
8990e307 | 1318 | static char debopts[] = "psltocPmfrxuLHXD"; |
79072805 LW |
1319 | char *d; |
1320 | ||
93a17b20 | 1321 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
79072805 LW |
1322 | debug |= 1 << (d - debopts); |
1323 | } | |
1324 | else { | |
1325 | debug = atoi(s+1); | |
1326 | for (s++; isDIGIT(*s); s++) ; | |
1327 | } | |
8990e307 | 1328 | debug |= 0x80000000; |
79072805 LW |
1329 | #else |
1330 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
a0d0e21e | 1331 | for (s++; isALNUM(*s); s++) ; |
79072805 LW |
1332 | #endif |
1333 | /*SUPPRESS 530*/ | |
1334 | return s; | |
4633a7c4 LW |
1335 | case 'h': |
1336 | usage(origargv[0]); | |
1337 | exit(0); | |
79072805 LW |
1338 | case 'i': |
1339 | if (inplace) | |
1340 | Safefree(inplace); | |
a0d0e21e | 1341 | inplace = savepv(s+1); |
79072805 LW |
1342 | /*SUPPRESS 530*/ |
1343 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
1344 | *s = '\0'; | |
1345 | break; | |
1346 | case 'I': | |
bbce6d69 | 1347 | forbid_setid("-I"); |
79072805 | 1348 | if (*++s) { |
748a9306 LW |
1349 | char *e; |
1350 | for (e = s; *e && !isSPACE(*e); e++) ; | |
1351 | av_push(GvAVn(incgv),newSVpv(s,e-s)); | |
1352 | if (*e) | |
1353 | return e; | |
79072805 LW |
1354 | } |
1355 | else | |
463ee0b2 | 1356 | croak("No space allowed after -I"); |
79072805 LW |
1357 | break; |
1358 | case 'l': | |
1359 | minus_l = TRUE; | |
1360 | s++; | |
a0d0e21e LW |
1361 | if (ors) |
1362 | Safefree(ors); | |
79072805 | 1363 | if (isDIGIT(*s)) { |
a0d0e21e | 1364 | ors = savepv("\n"); |
79072805 LW |
1365 | orslen = 1; |
1366 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); | |
1367 | s += numlen; | |
1368 | } | |
1369 | else { | |
c07a80fd | 1370 | if (RsPARA(nrs)) { |
6e72f9df | 1371 | ors = "\n\n"; |
c07a80fd | 1372 | orslen = 2; |
1373 | } | |
1374 | else | |
1375 | ors = SvPV(nrs, orslen); | |
6e72f9df | 1376 | ors = savepvn(ors, orslen); |
79072805 LW |
1377 | } |
1378 | return s; | |
1a30305b | 1379 | case 'M': |
bbce6d69 | 1380 | forbid_setid("-M"); /* XXX ? */ |
1a30305b | 1381 | /* FALL THROUGH */ |
1382 | case 'm': | |
bbce6d69 | 1383 | forbid_setid("-m"); /* XXX ? */ |
1a30305b | 1384 | if (*++s) { |
a5f75d66 AD |
1385 | char *start; |
1386 | char *use = "use "; | |
1387 | /* -M-foo == 'no foo' */ | |
1388 | if (*s == '-') { use = "no "; ++s; } | |
1389 | Sv = newSVpv(use,0); | |
1390 | start = s; | |
1a30305b | 1391 | /* We allow -M'Module qw(Foo Bar)' */ |
c07a80fd | 1392 | while(isALNUM(*s) || *s==':') ++s; |
1393 | if (*s != '=') { | |
1394 | sv_catpv(Sv, start); | |
1395 | if (*(start-1) == 'm') { | |
1396 | if (*s != '\0') | |
1397 | croak("Can't use '%c' after -mname", *s); | |
1398 | sv_catpv( Sv, " ()"); | |
1399 | } | |
1400 | } else { | |
1401 | sv_catpvn(Sv, start, s-start); | |
a5f75d66 | 1402 | sv_catpv(Sv, " split(/,/,q{"); |
c07a80fd | 1403 | sv_catpv(Sv, ++s); |
a5f75d66 | 1404 | sv_catpv(Sv, "})"); |
c07a80fd | 1405 | } |
1a30305b | 1406 | s += strlen(s); |
c07a80fd | 1407 | if (preambleav == NULL) |
1408 | preambleav = newAV(); | |
1409 | av_push(preambleav, Sv); | |
1a30305b | 1410 | } |
1411 | else | |
1412 | croak("No space allowed after -%c", *(s-1)); | |
1413 | return s; | |
79072805 LW |
1414 | case 'n': |
1415 | minus_n = TRUE; | |
1416 | s++; | |
1417 | return s; | |
1418 | case 'p': | |
1419 | minus_p = TRUE; | |
1420 | s++; | |
1421 | return s; | |
1422 | case 's': | |
bbce6d69 | 1423 | forbid_setid("-s"); |
79072805 LW |
1424 | doswitches = TRUE; |
1425 | s++; | |
1426 | return s; | |
463ee0b2 LW |
1427 | case 'T': |
1428 | tainting = TRUE; | |
1429 | s++; | |
1430 | return s; | |
79072805 LW |
1431 | case 'u': |
1432 | do_undump = TRUE; | |
1433 | s++; | |
1434 | return s; | |
1435 | case 'U': | |
1436 | unsafe = TRUE; | |
1437 | s++; | |
1438 | return s; | |
1439 | case 'v': | |
a5f75d66 AD |
1440 | #if defined(SUBVERSION) && SUBVERSION > 0 |
1441 | printf("\nThis is perl, version 5.%03d_%02d", PATCHLEVEL, SUBVERSION); | |
1442 | #else | |
1443 | printf("\nThis is perl, version %s",patchlevel); | |
1444 | #endif | |
1a30305b | 1445 | |
44a8e56a | 1446 | printf("\n\nCopyright 1987-1997, Larry Wall\n"); |
760ac839 | 1447 | printf("\n\t+ suidperl security patch"); |
79072805 | 1448 | #ifdef MSDOS |
55497cff | 1449 | printf("\n\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n"); |
1450 | #endif | |
1451 | #ifdef DJGPP | |
1452 | printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"); | |
4633a7c4 | 1453 | #endif |
79072805 | 1454 | #ifdef OS2 |
5dd60ef7 | 1455 | printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
760ac839 | 1456 | "Version 5 port Copyright (c) 1994-1996, Andreas Kaiser, Ilya Zakharevich\n"); |
79072805 | 1457 | #endif |
79072805 | 1458 | #ifdef atarist |
760ac839 | 1459 | printf("atariST series port, ++jrb bammi@cadence.com\n"); |
79072805 | 1460 | #endif |
760ac839 | 1461 | printf("\n\ |
79072805 | 1462 | Perl may be copied only under the terms of either the Artistic License or the\n\ |
760ac839 | 1463 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n"); |
79072805 LW |
1464 | exit(0); |
1465 | case 'w': | |
1466 | dowarn = TRUE; | |
1467 | s++; | |
1468 | return s; | |
a0d0e21e | 1469 | case '*': |
79072805 LW |
1470 | case ' ': |
1471 | if (s[1] == '-') /* Additional switches on #! line. */ | |
1472 | return s+2; | |
1473 | break; | |
a0d0e21e | 1474 | case '-': |
79072805 LW |
1475 | case 0: |
1476 | case '\n': | |
1477 | case '\t': | |
1478 | break; | |
a0d0e21e LW |
1479 | case 'P': |
1480 | if (preprocess) | |
1481 | return s+1; | |
1482 | /* FALL THROUGH */ | |
79072805 | 1483 | default: |
a0d0e21e | 1484 | croak("Can't emulate -%.1s on #! line",s); |
79072805 LW |
1485 | } |
1486 | return Nullch; | |
1487 | } | |
1488 | ||
1489 | /* compliments of Tom Christiansen */ | |
1490 | ||
1491 | /* unexec() can be found in the Gnu emacs distribution */ | |
1492 | ||
1493 | void | |
1494 | my_unexec() | |
1495 | { | |
1496 | #ifdef UNEXEC | |
1497 | int status; | |
1498 | extern int etext; | |
1499 | ||
1500 | sprintf (buf, "%s.perldump", origfilename); | |
1501 | sprintf (tokenbuf, "%s/perl", BIN); | |
1502 | ||
1503 | status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); | |
1504 | if (status) | |
760ac839 | 1505 | PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n", tokenbuf, buf); |
a0d0e21e | 1506 | exit(status); |
79072805 | 1507 | #else |
a5f75d66 AD |
1508 | # ifdef VMS |
1509 | # include <lib$routines.h> | |
1510 | lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ | |
1511 | #else | |
79072805 LW |
1512 | ABORT(); /* for use with undump */ |
1513 | #endif | |
a5f75d66 | 1514 | #endif |
79072805 LW |
1515 | } |
1516 | ||
1517 | static void | |
1518 | init_main_stash() | |
1519 | { | |
463ee0b2 | 1520 | GV *gv; |
6e72f9df | 1521 | |
1522 | /* Note that strtab is a rather special HV. Assumptions are made | |
1523 | about not iterating on it, and not adding tie magic to it. | |
1524 | It is properly deallocated in perl_destruct() */ | |
1525 | strtab = newHV(); | |
1526 | HvSHAREKEYS_off(strtab); /* mandatory */ | |
1527 | Newz(506,((XPVHV*)SvANY(strtab))->xhv_array, | |
1528 | sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char); | |
1529 | ||
463ee0b2 | 1530 | curstash = defstash = newHV(); |
79072805 | 1531 | curstname = newSVpv("main",4); |
adbc6bb1 LW |
1532 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
1533 | SvREFCNT_dec(GvHV(gv)); | |
1534 | GvHV(gv) = (HV*)SvREFCNT_inc(defstash); | |
463ee0b2 | 1535 | SvREADONLY_on(gv); |
a0d0e21e | 1536 | HvNAME(defstash) = savepv("main"); |
85e6fe83 | 1537 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
a5f75d66 | 1538 | GvMULTI_on(incgv); |
a0d0e21e | 1539 | defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
4633a7c4 | 1540 | errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
a5f75d66 | 1541 | GvMULTI_on(errgv); |
552a7a9b | 1542 | sv_setpvn(GvSV(errgv), "", 0); |
8990e307 LW |
1543 | curstash = defstash; |
1544 | compiling.cop_stash = defstash; | |
adbc6bb1 | 1545 | debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
4633a7c4 LW |
1546 | /* We must init $/ before switches are processed. */ |
1547 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); | |
79072805 LW |
1548 | } |
1549 | ||
a0d0e21e LW |
1550 | #ifdef CAN_PROTOTYPE |
1551 | static void | |
1552 | open_script(char *scriptname, bool dosearch, SV *sv) | |
1553 | #else | |
79072805 LW |
1554 | static void |
1555 | open_script(scriptname,dosearch,sv) | |
1556 | char *scriptname; | |
1557 | bool dosearch; | |
1558 | SV *sv; | |
a0d0e21e | 1559 | #endif |
79072805 LW |
1560 | { |
1561 | char *xfound = Nullch; | |
1562 | char *xfailed = Nullch; | |
1563 | register char *s; | |
1564 | I32 len; | |
a38d6535 LW |
1565 | int retval; |
1566 | #if defined(DOSISH) && !defined(OS2) && !defined(atarist) | |
1567 | #define SEARCH_EXTS ".bat", ".cmd", NULL | |
1568 | #endif | |
ab821d7f | 1569 | #ifdef VMS |
1570 | # define SEARCH_EXTS ".pl", ".com", NULL | |
1571 | #endif | |
a38d6535 LW |
1572 | /* additional extensions to try in each dir if scriptname not found */ |
1573 | #ifdef SEARCH_EXTS | |
1574 | char *ext[] = { SEARCH_EXTS }; | |
1575 | int extidx = (strchr(scriptname,'.')) ? -1 : 0; /* has ext already */ | |
1576 | #endif | |
79072805 | 1577 | |
c07a80fd | 1578 | #ifdef VMS |
6e72f9df | 1579 | if (dosearch) { |
1580 | int hasdir, idx = 0, deftypes = 1; | |
1581 | ||
1582 | hasdir = (strpbrk(scriptname,":[</") != Nullch) ; | |
1583 | /* The first time through, just add SEARCH_EXTS to whatever we | |
1584 | * already have, so we can check for default file types. */ | |
1585 | while (deftypes || (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) ) { | |
1586 | if (deftypes) { deftypes = 0; *tokenbuf = '\0'; } | |
c07a80fd | 1587 | strcat(tokenbuf,scriptname); |
1588 | #else /* !VMS */ | |
93a17b20 | 1589 | if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { |
79072805 LW |
1590 | |
1591 | bufend = s + strlen(s); | |
1592 | while (*s) { | |
1593 | #ifndef DOSISH | |
1594 | s = cpytill(tokenbuf,s,bufend,':',&len); | |
1595 | #else | |
1596 | #ifdef atarist | |
1597 | for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); | |
1598 | tokenbuf[len] = '\0'; | |
1599 | #else | |
1600 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
1601 | tokenbuf[len] = '\0'; | |
1602 | #endif | |
1603 | #endif | |
1604 | if (*s) | |
1605 | s++; | |
1606 | #ifndef DOSISH | |
1607 | if (len && tokenbuf[len-1] != '/') | |
1608 | #else | |
1609 | #ifdef atarist | |
1610 | if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) | |
1611 | #else | |
1612 | if (len && tokenbuf[len-1] != '\\') | |
1613 | #endif | |
1614 | #endif | |
1615 | (void)strcat(tokenbuf+len,"/"); | |
1616 | (void)strcat(tokenbuf+len,scriptname); | |
c07a80fd | 1617 | #endif /* !VMS */ |
a38d6535 LW |
1618 | |
1619 | #ifdef SEARCH_EXTS | |
1620 | len = strlen(tokenbuf); | |
1621 | if (extidx > 0) /* reset after previous loop */ | |
1622 | extidx = 0; | |
1623 | do { | |
1624 | #endif | |
760ac839 | 1625 | DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf)); |
a38d6535 LW |
1626 | retval = Stat(tokenbuf,&statbuf); |
1627 | #ifdef SEARCH_EXTS | |
1628 | } while ( retval < 0 /* not there */ | |
1629 | && extidx>=0 && ext[extidx] /* try an extension? */ | |
1630 | && strcpy(tokenbuf+len, ext[extidx++]) | |
1631 | ); | |
1632 | #endif | |
1633 | if (retval < 0) | |
79072805 LW |
1634 | continue; |
1635 | if (S_ISREG(statbuf.st_mode) | |
1636 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
1637 | xfound = tokenbuf; /* bingo! */ | |
1638 | break; | |
1639 | } | |
1640 | if (!xfailed) | |
a0d0e21e | 1641 | xfailed = savepv(tokenbuf); |
79072805 LW |
1642 | } |
1643 | if (!xfound) | |
463ee0b2 | 1644 | croak("Can't execute %s", xfailed ? xfailed : scriptname ); |
79072805 LW |
1645 | if (xfailed) |
1646 | Safefree(xfailed); | |
1647 | scriptname = xfound; | |
1648 | } | |
1649 | ||
96436eeb | 1650 | if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) { |
1651 | char *s = scriptname + 8; | |
1652 | fdscript = atoi(s); | |
1653 | while (isDIGIT(*s)) | |
1654 | s++; | |
1655 | if (*s) | |
1656 | scriptname = s + 1; | |
1657 | } | |
1658 | else | |
1659 | fdscript = -1; | |
ab821d7f | 1660 | origfilename = savepv(e_tmpname ? "-e" : scriptname); |
79072805 LW |
1661 | curcop->cop_filegv = gv_fetchfile(origfilename); |
1662 | if (strEQ(origfilename,"-")) | |
1663 | scriptname = ""; | |
96436eeb | 1664 | if (fdscript >= 0) { |
760ac839 | 1665 | rsfp = PerlIO_fdopen(fdscript,"r"); |
96436eeb | 1666 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
7aa04957 CS |
1667 | if (rsfp) |
1668 | fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ | |
96436eeb | 1669 | #endif |
1670 | } | |
1671 | else if (preprocess) { | |
79072805 LW |
1672 | char *cpp = CPPSTDIN; |
1673 | ||
1674 | if (strEQ(cpp,"cppstdin")) | |
1675 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
1676 | else | |
1677 | sprintf(tokenbuf, "%s", cpp); | |
1678 | sv_catpv(sv,"-I"); | |
fed7345c | 1679 | sv_catpv(sv,PRIVLIB_EXP); |
79072805 LW |
1680 | #ifdef MSDOS |
1681 | (void)sprintf(buf, "\ | |
1682 | sed %s -e \"/^[^#]/b\" \ | |
1683 | -e \"/^#[ ]*include[ ]/b\" \ | |
1684 | -e \"/^#[ ]*define[ ]/b\" \ | |
1685 | -e \"/^#[ ]*if[ ]/b\" \ | |
1686 | -e \"/^#[ ]*ifdef[ ]/b\" \ | |
1687 | -e \"/^#[ ]*ifndef[ ]/b\" \ | |
1688 | -e \"/^#[ ]*else/b\" \ | |
1689 | -e \"/^#[ ]*elif[ ]/b\" \ | |
1690 | -e \"/^#[ ]*undef[ ]/b\" \ | |
1691 | -e \"/^#[ ]*endif/b\" \ | |
1692 | -e \"s/^#.*//\" \ | |
1693 | %s | %s -C %s %s", | |
1694 | (doextract ? "-e \"1,/^#/d\n\"" : ""), | |
1695 | #else | |
1696 | (void)sprintf(buf, "\ | |
1697 | %s %s -e '/^[^#]/b' \ | |
1698 | -e '/^#[ ]*include[ ]/b' \ | |
1699 | -e '/^#[ ]*define[ ]/b' \ | |
1700 | -e '/^#[ ]*if[ ]/b' \ | |
1701 | -e '/^#[ ]*ifdef[ ]/b' \ | |
1702 | -e '/^#[ ]*ifndef[ ]/b' \ | |
1703 | -e '/^#[ ]*else/b' \ | |
1704 | -e '/^#[ ]*elif[ ]/b' \ | |
1705 | -e '/^#[ ]*undef[ ]/b' \ | |
1706 | -e '/^#[ ]*endif/b' \ | |
1707 | -e 's/^[ ]*#.*//' \ | |
1708 | %s | %s -C %s %s", | |
1709 | #ifdef LOC_SED | |
1710 | LOC_SED, | |
1711 | #else | |
1712 | "sed", | |
1713 | #endif | |
1714 | (doextract ? "-e '1,/^#/d\n'" : ""), | |
1715 | #endif | |
463ee0b2 | 1716 | scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); |
79072805 LW |
1717 | doextract = FALSE; |
1718 | #ifdef IAMSUID /* actually, this is caught earlier */ | |
1719 | if (euid != uid && !euid) { /* if running suidperl */ | |
1720 | #ifdef HAS_SETEUID | |
1721 | (void)seteuid(uid); /* musn't stay setuid root */ | |
1722 | #else | |
1723 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1724 | (void)setreuid((Uid_t)-1, uid); |
1725 | #else | |
1726 | #ifdef HAS_SETRESUID | |
1727 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); | |
79072805 LW |
1728 | #else |
1729 | setuid(uid); | |
1730 | #endif | |
1731 | #endif | |
85e6fe83 | 1732 | #endif |
79072805 | 1733 | if (geteuid() != uid) |
463ee0b2 | 1734 | croak("Can't do seteuid!\n"); |
79072805 LW |
1735 | } |
1736 | #endif /* IAMSUID */ | |
1737 | rsfp = my_popen(buf,"r"); | |
1738 | } | |
1739 | else if (!*scriptname) { | |
bbce6d69 | 1740 | forbid_setid("program input from stdin"); |
760ac839 | 1741 | rsfp = PerlIO_stdin(); |
79072805 | 1742 | } |
96436eeb | 1743 | else { |
760ac839 | 1744 | rsfp = PerlIO_open(scriptname,"r"); |
96436eeb | 1745 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
7aa04957 CS |
1746 | if (rsfp) |
1747 | fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */ | |
96436eeb | 1748 | #endif |
1749 | } | |
5dd60ef7 | 1750 | if (e_tmpname) { |
1751 | e_fp = rsfp; | |
1752 | } | |
7aa04957 | 1753 | if (!rsfp) { |
13281fa4 | 1754 | #ifdef DOSUID |
a687059c | 1755 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
a0d0e21e | 1756 | if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
13281fa4 | 1757 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 1758 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1759 | execv(buf, origargv); /* try again */ |
463ee0b2 | 1760 | croak("Can't do setuid\n"); |
13281fa4 LW |
1761 | } |
1762 | #endif | |
1763 | #endif | |
463ee0b2 | 1764 | croak("Can't open perl script \"%s\": %s\n", |
2304df62 | 1765 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
13281fa4 | 1766 | } |
79072805 | 1767 | } |
8d063cd8 | 1768 | |
79072805 | 1769 | static void |
96436eeb | 1770 | validate_suid(validarg, scriptname) |
79072805 | 1771 | char *validarg; |
96436eeb | 1772 | char *scriptname; |
79072805 | 1773 | { |
96436eeb | 1774 | int which; |
1775 | ||
13281fa4 LW |
1776 | /* do we need to emulate setuid on scripts? */ |
1777 | ||
1778 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
1779 | * in the kernel because of a security problem. Merely defining DOSUID | |
1780 | * in perl will not fix that problem, but if you have disabled setuid | |
1781 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
1782 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
1783 | * root version must be called suidperl or sperlN.NNN. If regular perl |
1784 | * discovers that it has opened a setuid script, it calls suidperl with | |
1785 | * the same argv that it had. If suidperl finds that the script it has | |
1786 | * just opened is NOT setuid root, it sets the effective uid back to the | |
1787 | * uid. We don't just make perl setuid root because that loses the | |
1788 | * effective uid we had before invoking perl, if it was different from the | |
1789 | * uid. | |
13281fa4 LW |
1790 | * |
1791 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
1792 | * be defined in suidperl only. suidperl must be setuid root. The | |
1793 | * Configure script will set this up for you if you want it. | |
1794 | */ | |
a687059c | 1795 | |
13281fa4 | 1796 | #ifdef DOSUID |
6e72f9df | 1797 | char *s, *s2; |
a0d0e21e | 1798 | |
760ac839 | 1799 | if (Fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ |
463ee0b2 | 1800 | croak("Can't stat script \"%s\"",origfilename); |
96436eeb | 1801 | if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { |
79072805 | 1802 | I32 len; |
13281fa4 | 1803 | |
a687059c | 1804 | #ifdef IAMSUID |
fe14fcc3 | 1805 | #ifndef HAS_SETREUID |
a687059c LW |
1806 | /* On this access check to make sure the directories are readable, |
1807 | * there is actually a small window that the user could use to make | |
1808 | * filename point to an accessible directory. So there is a faint | |
1809 | * chance that someone could execute a setuid script down in a | |
1810 | * non-accessible directory. I don't know what to do about that. | |
1811 | * But I don't think it's too important. The manual lies when | |
1812 | * it says access() is useful in setuid programs. | |
1813 | */ | |
463ee0b2 LW |
1814 | if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
1815 | croak("Permission denied"); | |
a687059c LW |
1816 | #else |
1817 | /* If we can swap euid and uid, then we can determine access rights | |
1818 | * with a simple stat of the file, and then compare device and | |
1819 | * inode to make sure we did stat() on the same file we opened. | |
1820 | * Then we just have to make sure he or she can execute it. | |
1821 | */ | |
1822 | { | |
1823 | struct stat tmpstatbuf; | |
1824 | ||
85e6fe83 LW |
1825 | if ( |
1826 | #ifdef HAS_SETREUID | |
1827 | setreuid(euid,uid) < 0 | |
a0d0e21e LW |
1828 | #else |
1829 | # if HAS_SETRESUID | |
85e6fe83 | 1830 | setresuid(euid,uid,(Uid_t)-1) < 0 |
a0d0e21e | 1831 | # endif |
85e6fe83 LW |
1832 | #endif |
1833 | || getuid() != euid || geteuid() != uid) | |
463ee0b2 | 1834 | croak("Can't swap uid and euid"); /* really paranoid */ |
a0d0e21e | 1835 | if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) |
463ee0b2 | 1836 | croak("Permission denied"); /* testing full pathname here */ |
a687059c LW |
1837 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
1838 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
760ac839 | 1839 | (void)PerlIO_close(rsfp); |
79072805 | 1840 | if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ |
760ac839 | 1841 | PerlIO_printf(rsfp, |
a687059c LW |
1842 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ |
1843 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
1844 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
1845 | statbuf.st_dev, statbuf.st_ino, | |
463ee0b2 | 1846 | SvPVX(GvSV(curcop->cop_filegv)), |
20188a90 | 1847 | statbuf.st_uid, statbuf.st_gid); |
79072805 | 1848 | (void)my_pclose(rsfp); |
a687059c | 1849 | } |
463ee0b2 | 1850 | croak("Permission denied\n"); |
a687059c | 1851 | } |
85e6fe83 LW |
1852 | if ( |
1853 | #ifdef HAS_SETREUID | |
1854 | setreuid(uid,euid) < 0 | |
a0d0e21e LW |
1855 | #else |
1856 | # if defined(HAS_SETRESUID) | |
85e6fe83 | 1857 | setresuid(uid,euid,(Uid_t)-1) < 0 |
a0d0e21e | 1858 | # endif |
85e6fe83 LW |
1859 | #endif |
1860 | || getuid() != uid || geteuid() != euid) | |
463ee0b2 | 1861 | croak("Can't reswap uid and euid"); |
27e2fb84 | 1862 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
463ee0b2 | 1863 | croak("Permission denied\n"); |
a687059c | 1864 | } |
fe14fcc3 | 1865 | #endif /* HAS_SETREUID */ |
a687059c LW |
1866 | #endif /* IAMSUID */ |
1867 | ||
27e2fb84 | 1868 | if (!S_ISREG(statbuf.st_mode)) |
463ee0b2 | 1869 | croak("Permission denied"); |
27e2fb84 | 1870 | if (statbuf.st_mode & S_IWOTH) |
463ee0b2 | 1871 | croak("Setuid/gid script is writable by world"); |
13281fa4 | 1872 | doswitches = FALSE; /* -s is insecure in suid */ |
79072805 | 1873 | curcop->cop_line++; |
760ac839 LW |
1874 | if (sv_gets(linestr, rsfp, 0) == Nullch || |
1875 | strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */ | |
463ee0b2 | 1876 | croak("No #! line"); |
760ac839 | 1877 | s = SvPV(linestr,na)+2; |
663a0e37 | 1878 | if (*s == ' ') s++; |
45d8adaa | 1879 | while (!isSPACE(*s)) s++; |
760ac839 | 1880 | for (s2 = s; (s2 > SvPV(linestr,na)+2 && |
6e72f9df | 1881 | (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ; |
1882 | if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ | |
463ee0b2 | 1883 | croak("Not a perl script"); |
a687059c | 1884 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
1885 | /* |
1886 | * #! arg must be what we saw above. They can invoke it by | |
1887 | * mentioning suidperl explicitly, but they may not add any strange | |
1888 | * arguments beyond what #! says if they do invoke suidperl that way. | |
1889 | */ | |
1890 | len = strlen(validarg); | |
1891 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 1892 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
463ee0b2 | 1893 | croak("Args must match #! line"); |
a687059c LW |
1894 | |
1895 | #ifndef IAMSUID | |
1896 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
1897 | euid == statbuf.st_uid) | |
1898 | if (!do_undump) | |
463ee0b2 | 1899 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1900 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1901 | #endif /* IAMSUID */ | |
13281fa4 LW |
1902 | |
1903 | if (euid) { /* oops, we're not the setuid root perl */ | |
760ac839 | 1904 | (void)PerlIO_close(rsfp); |
13281fa4 | 1905 | #ifndef IAMSUID |
27e2fb84 | 1906 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1907 | execv(buf, origargv); /* try again */ |
13281fa4 | 1908 | #endif |
463ee0b2 | 1909 | croak("Can't do setuid\n"); |
13281fa4 LW |
1910 | } |
1911 | ||
83025b21 | 1912 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
fe14fcc3 | 1913 | #ifdef HAS_SETEGID |
a687059c LW |
1914 | (void)setegid(statbuf.st_gid); |
1915 | #else | |
fe14fcc3 | 1916 | #ifdef HAS_SETREGID |
85e6fe83 LW |
1917 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
1918 | #else | |
1919 | #ifdef HAS_SETRESGID | |
1920 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); | |
a687059c LW |
1921 | #else |
1922 | setgid(statbuf.st_gid); | |
1923 | #endif | |
1924 | #endif | |
85e6fe83 | 1925 | #endif |
83025b21 | 1926 | if (getegid() != statbuf.st_gid) |
463ee0b2 | 1927 | croak("Can't do setegid!\n"); |
83025b21 | 1928 | } |
a687059c LW |
1929 | if (statbuf.st_mode & S_ISUID) { |
1930 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 1931 | #ifdef HAS_SETEUID |
a687059c LW |
1932 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
1933 | #else | |
fe14fcc3 | 1934 | #ifdef HAS_SETREUID |
85e6fe83 LW |
1935 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
1936 | #else | |
1937 | #ifdef HAS_SETRESUID | |
1938 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); | |
a687059c LW |
1939 | #else |
1940 | setuid(statbuf.st_uid); | |
1941 | #endif | |
1942 | #endif | |
85e6fe83 | 1943 | #endif |
83025b21 | 1944 | if (geteuid() != statbuf.st_uid) |
463ee0b2 | 1945 | croak("Can't do seteuid!\n"); |
a687059c | 1946 | } |
83025b21 | 1947 | else if (uid) { /* oops, mustn't run as root */ |
fe14fcc3 | 1948 | #ifdef HAS_SETEUID |
85e6fe83 | 1949 | (void)seteuid((Uid_t)uid); |
a687059c | 1950 | #else |
fe14fcc3 | 1951 | #ifdef HAS_SETREUID |
85e6fe83 | 1952 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
a687059c | 1953 | #else |
85e6fe83 LW |
1954 | #ifdef HAS_SETRESUID |
1955 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); | |
1956 | #else | |
1957 | setuid((Uid_t)uid); | |
1958 | #endif | |
a687059c LW |
1959 | #endif |
1960 | #endif | |
83025b21 | 1961 | if (geteuid() != uid) |
463ee0b2 | 1962 | croak("Can't do seteuid!\n"); |
83025b21 | 1963 | } |
748a9306 | 1964 | init_ids(); |
27e2fb84 | 1965 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
463ee0b2 | 1966 | croak("Permission denied\n"); /* they can't do this */ |
13281fa4 LW |
1967 | } |
1968 | #ifdef IAMSUID | |
1969 | else if (preprocess) | |
463ee0b2 | 1970 | croak("-P not allowed for setuid/setgid script\n"); |
96436eeb | 1971 | else if (fdscript >= 0) |
1972 | croak("fd script not allowed in suidperl\n"); | |
13281fa4 | 1973 | else |
463ee0b2 | 1974 | croak("Script is not setuid/setgid in suidperl\n"); |
96436eeb | 1975 | |
1976 | /* We absolutely must clear out any saved ids here, so we */ | |
1977 | /* exec the real perl, substituting fd script for scriptname. */ | |
1978 | /* (We pass script name as "subdir" of fd, which perl will grok.) */ | |
760ac839 LW |
1979 | PerlIO_rewind(rsfp); |
1980 | lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */ | |
96436eeb | 1981 | for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ; |
1982 | if (!origargv[which]) | |
1983 | croak("Permission denied"); | |
760ac839 | 1984 | (void)sprintf(buf, "/dev/fd/%d/%.127s", PerlIO_fileno(rsfp), origargv[which]); |
96436eeb | 1985 | origargv[which] = buf; |
1986 | ||
1987 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
760ac839 | 1988 | fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */ |
96436eeb | 1989 | #endif |
1990 | ||
1991 | (void)sprintf(tokenbuf, "%s/perl%s", BIN, patchlevel); | |
1992 | execv(tokenbuf, origargv); /* try again */ | |
1993 | croak("Can't do setuid\n"); | |
13281fa4 | 1994 | #endif /* IAMSUID */ |
a687059c | 1995 | #else /* !DOSUID */ |
a687059c LW |
1996 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
1997 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
760ac839 | 1998 | Fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
a687059c LW |
1999 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
2000 | || | |
2001 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
2002 | ) | |
2003 | if (!do_undump) | |
463ee0b2 | 2004 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
2005 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
2006 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
2007 | /* not set-id, must be wrapped */ | |
a687059c | 2008 | } |
13281fa4 | 2009 | #endif /* DOSUID */ |
79072805 | 2010 | } |
13281fa4 | 2011 | |
79072805 LW |
2012 | static void |
2013 | find_beginning() | |
2014 | { | |
6e72f9df | 2015 | register char *s, *s2; |
33b78306 LW |
2016 | |
2017 | /* skip forward in input to the real script? */ | |
2018 | ||
bbce6d69 | 2019 | forbid_setid("-x"); |
33b78306 | 2020 | while (doextract) { |
79072805 | 2021 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
463ee0b2 | 2022 | croak("No Perl script found in input\n"); |
6e72f9df | 2023 | if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) { |
760ac839 | 2024 | PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */ |
33b78306 | 2025 | doextract = FALSE; |
6e72f9df | 2026 | while (*s && !(isSPACE (*s) || *s == '#')) s++; |
2027 | s2 = s; | |
2028 | while (*s == ' ' || *s == '\t') s++; | |
2029 | if (*s++ == '-') { | |
2030 | while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--; | |
2031 | if (strnEQ(s2-4,"perl",4)) | |
2032 | /*SUPPRESS 530*/ | |
2033 | while (s = moreswitches(s)) ; | |
33b78306 | 2034 | } |
79072805 | 2035 | if (cddir && chdir(cddir) < 0) |
463ee0b2 | 2036 | croak("Can't chdir to %s",cddir); |
83025b21 LW |
2037 | } |
2038 | } | |
2039 | } | |
2040 | ||
79072805 | 2041 | static void |
748a9306 | 2042 | init_ids() |
352d5a3a | 2043 | { |
748a9306 LW |
2044 | uid = (int)getuid(); |
2045 | euid = (int)geteuid(); | |
2046 | gid = (int)getgid(); | |
2047 | egid = (int)getegid(); | |
2048 | #ifdef VMS | |
2049 | uid |= gid << 16; | |
2050 | euid |= egid << 16; | |
2051 | #endif | |
4633a7c4 | 2052 | tainting |= (uid && (euid != uid || egid != gid)); |
748a9306 | 2053 | } |
79072805 | 2054 | |
748a9306 | 2055 | static void |
bbce6d69 | 2056 | forbid_setid(s) |
2057 | char *s; | |
2058 | { | |
2059 | if (euid != uid) | |
2060 | croak("No %s allowed while running setuid", s); | |
2061 | if (egid != gid) | |
2062 | croak("No %s allowed while running setgid", s); | |
2063 | } | |
2064 | ||
2065 | static void | |
748a9306 LW |
2066 | init_debugger() |
2067 | { | |
79072805 | 2068 | curstash = debstash; |
748a9306 | 2069 | dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
79072805 | 2070 | AvREAL_off(dbargs); |
a0d0e21e LW |
2071 | DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
2072 | DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); | |
748a9306 LW |
2073 | DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
2074 | DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); | |
c07a80fd | 2075 | sv_setiv(DBsingle, 0); |
748a9306 | 2076 | DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); |
c07a80fd | 2077 | sv_setiv(DBtrace, 0); |
748a9306 | 2078 | DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); |
c07a80fd | 2079 | sv_setiv(DBsignal, 0); |
79072805 | 2080 | curstash = defstash; |
352d5a3a LW |
2081 | } |
2082 | ||
79072805 | 2083 | static void |
8990e307 | 2084 | init_stacks() |
79072805 | 2085 | { |
6e72f9df | 2086 | curstack = newAV(); |
5f05dabc | 2087 | mainstack = curstack; /* remember in case we switch stacks */ |
2088 | AvREAL_off(curstack); /* not a real array */ | |
6e72f9df | 2089 | av_extend(curstack,127); |
79072805 | 2090 | |
6e72f9df | 2091 | stack_base = AvARRAY(curstack); |
79072805 | 2092 | stack_sp = stack_base; |
8990e307 | 2093 | stack_max = stack_base + 127; |
79072805 | 2094 | |
5f05dabc | 2095 | cxstack_max = 8192 / sizeof(CONTEXT) - 2; /* Use most of 8K. */ |
2096 | New(50,cxstack,cxstack_max + 1,CONTEXT); | |
2097 | cxstack_ix = -1; | |
2098 | ||
2099 | New(50,tmps_stack,128,SV*); | |
2100 | tmps_ix = -1; | |
2101 | tmps_max = 128; | |
2102 | ||
2103 | DEBUG( { | |
2104 | New(51,debname,128,char); | |
2105 | New(52,debdelim,128,char); | |
2106 | } ) | |
2107 | ||
2108 | /* | |
2109 | * The following stacks almost certainly should be per-interpreter, | |
2110 | * but for now they're not. XXX | |
2111 | */ | |
2112 | ||
6e72f9df | 2113 | if (markstack) { |
2114 | markstack_ptr = markstack; | |
2115 | } else { | |
2116 | New(54,markstack,64,I32); | |
2117 | markstack_ptr = markstack; | |
2118 | markstack_max = markstack + 64; | |
2119 | } | |
79072805 | 2120 | |
6e72f9df | 2121 | if (scopestack) { |
2122 | scopestack_ix = 0; | |
2123 | } else { | |
2124 | New(54,scopestack,32,I32); | |
2125 | scopestack_ix = 0; | |
2126 | scopestack_max = 32; | |
2127 | } | |
79072805 | 2128 | |
6e72f9df | 2129 | if (savestack) { |
2130 | savestack_ix = 0; | |
2131 | } else { | |
2132 | New(54,savestack,128,ANY); | |
2133 | savestack_ix = 0; | |
2134 | savestack_max = 128; | |
2135 | } | |
79072805 | 2136 | |
6e72f9df | 2137 | if (retstack) { |
2138 | retstack_ix = 0; | |
2139 | } else { | |
2140 | New(54,retstack,16,OP*); | |
2141 | retstack_ix = 0; | |
2142 | retstack_max = 16; | |
5f05dabc | 2143 | } |
378cc40b | 2144 | } |
33b78306 | 2145 | |
6e72f9df | 2146 | static void |
2147 | nuke_stacks() | |
2148 | { | |
2149 | Safefree(cxstack); | |
2150 | Safefree(tmps_stack); | |
5f05dabc | 2151 | DEBUG( { |
2152 | Safefree(debname); | |
2153 | Safefree(debdelim); | |
2154 | } ) | |
6e72f9df | 2155 | } |
2156 | ||
760ac839 | 2157 | static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
7aa04957 | 2158 | |
79072805 | 2159 | static void |
8990e307 LW |
2160 | init_lexer() |
2161 | { | |
a0d0e21e | 2162 | tmpfp = rsfp; |
8990e307 LW |
2163 | lex_start(linestr); |
2164 | rsfp = tmpfp; | |
2165 | subname = newSVpv("main",4); | |
2166 | } | |
2167 | ||
2168 | static void | |
79072805 | 2169 | init_predump_symbols() |
45d8adaa | 2170 | { |
93a17b20 | 2171 | GV *tmpgv; |
a0d0e21e | 2172 | GV *othergv; |
79072805 | 2173 | |
85e6fe83 | 2174 | sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); |
79072805 | 2175 | |
85e6fe83 | 2176 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
a5f75d66 | 2177 | GvMULTI_on(stdingv); |
760ac839 | 2178 | IoIFP(GvIOp(stdingv)) = PerlIO_stdin(); |
adbc6bb1 | 2179 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
a5f75d66 | 2180 | GvMULTI_on(tmpgv); |
a0d0e21e | 2181 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); |
79072805 | 2182 | |
85e6fe83 | 2183 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
a5f75d66 | 2184 | GvMULTI_on(tmpgv); |
760ac839 | 2185 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout(); |
4633a7c4 | 2186 | setdefout(tmpgv); |
adbc6bb1 | 2187 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
a5f75d66 | 2188 | GvMULTI_on(tmpgv); |
a0d0e21e | 2189 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); |
79072805 | 2190 | |
a0d0e21e | 2191 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
a5f75d66 | 2192 | GvMULTI_on(othergv); |
760ac839 | 2193 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr(); |
adbc6bb1 | 2194 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
a5f75d66 | 2195 | GvMULTI_on(tmpgv); |
a0d0e21e | 2196 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
79072805 LW |
2197 | |
2198 | statname = NEWSV(66,0); /* last filename we did stat on */ | |
ab821d7f | 2199 | |
6e72f9df | 2200 | if (!osname) |
2201 | osname = savepv(OSNAME); | |
79072805 | 2202 | } |
33b78306 | 2203 | |
79072805 LW |
2204 | static void |
2205 | init_postdump_symbols(argc,argv,env) | |
2206 | register int argc; | |
2207 | register char **argv; | |
2208 | register char **env; | |
33b78306 | 2209 | { |
79072805 LW |
2210 | char *s; |
2211 | SV *sv; | |
2212 | GV* tmpgv; | |
fe14fcc3 | 2213 | |
79072805 LW |
2214 | argc--,argv++; /* skip name of script */ |
2215 | if (doswitches) { | |
2216 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
2217 | if (!argv[0][1]) | |
2218 | break; | |
2219 | if (argv[0][1] == '-') { | |
2220 | argc--,argv++; | |
2221 | break; | |
2222 | } | |
93a17b20 | 2223 | if (s = strchr(argv[0], '=')) { |
79072805 | 2224 | *s++ = '\0'; |
85e6fe83 | 2225 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
79072805 LW |
2226 | } |
2227 | else | |
85e6fe83 | 2228 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
fe14fcc3 | 2229 | } |
79072805 LW |
2230 | } |
2231 | toptarget = NEWSV(0,0); | |
2232 | sv_upgrade(toptarget, SVt_PVFM); | |
2233 | sv_setpvn(toptarget, "", 0); | |
748a9306 | 2234 | bodytarget = NEWSV(0,0); |
79072805 LW |
2235 | sv_upgrade(bodytarget, SVt_PVFM); |
2236 | sv_setpvn(bodytarget, "", 0); | |
2237 | formtarget = bodytarget; | |
2238 | ||
bbce6d69 | 2239 | TAINT; |
85e6fe83 | 2240 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
79072805 LW |
2241 | sv_setpv(GvSV(tmpgv),origfilename); |
2242 | magicname("0", "0", 1); | |
2243 | } | |
85e6fe83 | 2244 | if (tmpgv = gv_fetchpv("\024",TRUE, SVt_PV)) |
79072805 | 2245 | time(&basetime); |
85e6fe83 | 2246 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
79072805 | 2247 | sv_setpv(GvSV(tmpgv),origargv[0]); |
85e6fe83 | 2248 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
a5f75d66 | 2249 | GvMULTI_on(argvgv); |
79072805 LW |
2250 | (void)gv_AVadd(argvgv); |
2251 | av_clear(GvAVn(argvgv)); | |
2252 | for (; argc > 0; argc--,argv++) { | |
a0d0e21e | 2253 | av_push(GvAVn(argvgv),newSVpv(argv[0],0)); |
79072805 LW |
2254 | } |
2255 | } | |
85e6fe83 | 2256 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
79072805 | 2257 | HV *hv; |
a5f75d66 | 2258 | GvMULTI_on(envgv); |
79072805 | 2259 | hv = GvHVn(envgv); |
463ee0b2 | 2260 | hv_clear(hv); |
a0d0e21e | 2261 | #ifndef VMS /* VMS doesn't have environ array */ |
4633a7c4 LW |
2262 | /* Note that if the supplied env parameter is actually a copy |
2263 | of the global environ then it may now point to free'd memory | |
2264 | if the environment has been modified since. To avoid this | |
2265 | problem we treat env==NULL as meaning 'use the default' | |
2266 | */ | |
2267 | if (!env) | |
2268 | env = environ; | |
8990e307 | 2269 | if (env != environ) { |
79072805 | 2270 | environ[0] = Nullch; |
8990e307 LW |
2271 | hv_magic(hv, envgv, 'E'); |
2272 | } | |
79072805 | 2273 | for (; *env; env++) { |
93a17b20 | 2274 | if (!(s = strchr(*env,'='))) |
79072805 LW |
2275 | continue; |
2276 | *s++ = '\0'; | |
2277 | sv = newSVpv(s--,0); | |
85e6fe83 | 2278 | sv_magic(sv, sv, 'e', *env, s - *env); |
79072805 LW |
2279 | (void)hv_store(hv, *env, s - *env, sv, 0); |
2280 | *s = '='; | |
fe14fcc3 | 2281 | } |
4550b24a | 2282 | #endif |
2283 | #ifdef DYNAMIC_ENV_FETCH | |
2284 | HvNAME(hv) = savepv(ENV_HV_NAME); | |
2285 | #endif | |
f511e57f | 2286 | hv_magic(hv, envgv, 'E'); |
79072805 | 2287 | } |
bbce6d69 | 2288 | TAINT_NOT; |
85e6fe83 | 2289 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 | 2290 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
33b78306 | 2291 | } |
34de22dd | 2292 | |
79072805 LW |
2293 | static void |
2294 | init_perllib() | |
34de22dd | 2295 | { |
85e6fe83 LW |
2296 | char *s; |
2297 | if (!tainting) { | |
552a7a9b | 2298 | #ifndef VMS |
85e6fe83 LW |
2299 | s = getenv("PERL5LIB"); |
2300 | if (s) | |
2301 | incpush(s); | |
2302 | else | |
2303 | incpush(getenv("PERLLIB")); | |
552a7a9b | 2304 | #else /* VMS */ |
2305 | /* Treat PERL5?LIB as a possible search list logical name -- the | |
2306 | * "natural" VMS idiom for a Unix path string. We allow each | |
2307 | * element to be a set of |-separated directories for compatibility. | |
2308 | */ | |
2309 | char buf[256]; | |
2310 | int idx = 0; | |
2311 | if (my_trnlnm("PERL5LIB",buf,0)) | |
2312 | do { incpush(buf); } while (my_trnlnm("PERL5LIB",buf,++idx)); | |
2313 | else | |
2314 | while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf); | |
2315 | #endif /* VMS */ | |
85e6fe83 | 2316 | } |
34de22dd | 2317 | |
df5cef82 | 2318 | /* Use the ~-expanded versions of APPLIB (undocumented), |
2319 | ARCHLIB PRIVLIB SITEARCH SITELIB and OLDARCHLIB | |
2320 | */ | |
4633a7c4 LW |
2321 | #ifdef APPLLIB_EXP |
2322 | incpush(APPLLIB_EXP); | |
16d20bd9 | 2323 | #endif |
4633a7c4 | 2324 | |
fed7345c AD |
2325 | #ifdef ARCHLIB_EXP |
2326 | incpush(ARCHLIB_EXP); | |
a0d0e21e | 2327 | #endif |
fed7345c AD |
2328 | #ifndef PRIVLIB_EXP |
2329 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" | |
34de22dd | 2330 | #endif |
fed7345c | 2331 | incpush(PRIVLIB_EXP); |
4633a7c4 LW |
2332 | |
2333 | #ifdef SITEARCH_EXP | |
2334 | incpush(SITEARCH_EXP); | |
2335 | #endif | |
2336 | #ifdef SITELIB_EXP | |
2337 | incpush(SITELIB_EXP); | |
2338 | #endif | |
2339 | #ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ | |
2340 | incpush(OLDARCHLIB_EXP); | |
2341 | #endif | |
a0d0e21e | 2342 | |
4633a7c4 LW |
2343 | if (!tainting) |
2344 | incpush("."); | |
34de22dd | 2345 | } |
93a17b20 LW |
2346 | |
2347 | void | |
2348 | calllist(list) | |
2349 | AV* list; | |
2350 | { | |
a5f75d66 | 2351 | Sigjmp_buf oldtop; |
a0d0e21e LW |
2352 | STRLEN len; |
2353 | line_t oldline = curcop->cop_line; | |
93a17b20 | 2354 | |
a5f75d66 | 2355 | Copy(top_env, oldtop, 1, Sigjmp_buf); |
93a17b20 | 2356 | |
8990e307 LW |
2357 | while (AvFILL(list) >= 0) { |
2358 | CV *cv = (CV*)av_shift(list); | |
93a17b20 | 2359 | |
8990e307 | 2360 | SAVEFREESV(cv); |
a0d0e21e | 2361 | |
a5f75d66 | 2362 | switch (Sigsetjmp(top_env,1)) { |
748a9306 | 2363 | case 0: { |
4633a7c4 | 2364 | SV* atsv = GvSV(errgv); |
748a9306 LW |
2365 | PUSHMARK(stack_sp); |
2366 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); | |
2367 | (void)SvPV(atsv, len); | |
2368 | if (len) { | |
a5f75d66 | 2369 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
748a9306 LW |
2370 | curcop = &compiling; |
2371 | curcop->cop_line = oldline; | |
2372 | if (list == beginav) | |
2373 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); | |
2374 | else | |
2375 | sv_catpv(atsv, "END failed--cleanup aborted"); | |
2376 | croak("%s", SvPVX(atsv)); | |
2377 | } | |
a0d0e21e | 2378 | } |
85e6fe83 LW |
2379 | break; |
2380 | case 1: | |
748a9306 | 2381 | #ifdef VMS |
85e6fe83 | 2382 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
2383 | #else |
2384 | statusvalue = 1; | |
2385 | #endif | |
85e6fe83 LW |
2386 | /* FALL THROUGH */ |
2387 | case 2: | |
2388 | /* my_exit() was called */ | |
2389 | curstash = defstash; | |
2390 | if (endav) | |
2391 | calllist(endav); | |
a0d0e21e | 2392 | FREETMPS; |
a5f75d66 | 2393 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
a0d0e21e LW |
2394 | curcop = &compiling; |
2395 | curcop->cop_line = oldline; | |
85e6fe83 LW |
2396 | if (statusvalue) { |
2397 | if (list == beginav) | |
a0d0e21e | 2398 | croak("BEGIN failed--compilation aborted"); |
85e6fe83 | 2399 | else |
a0d0e21e | 2400 | croak("END failed--cleanup aborted"); |
85e6fe83 | 2401 | } |
85e6fe83 LW |
2402 | my_exit(statusvalue); |
2403 | /* NOTREACHED */ | |
2404 | return; | |
2405 | case 3: | |
2406 | if (!restartop) { | |
760ac839 | 2407 | PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); |
a0d0e21e | 2408 | FREETMPS; |
85e6fe83 LW |
2409 | break; |
2410 | } | |
a5f75d66 | 2411 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
a0d0e21e LW |
2412 | curcop = &compiling; |
2413 | curcop->cop_line = oldline; | |
a5f75d66 | 2414 | Siglongjmp(top_env, 3); |
8990e307 | 2415 | } |
93a17b20 LW |
2416 | } |
2417 | ||
a5f75d66 | 2418 | Copy(oldtop, top_env, 1, Sigjmp_buf); |
93a17b20 LW |
2419 | } |
2420 |