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 | |
a0d0e21e LW |
18 | /* Omit -- it causes too much grief on mixed systems. |
19 | #ifdef I_UNISTD | |
20 | #include <unistd.h> | |
21 | #endif | |
22 | */ | |
23 | ||
4633a7c4 | 24 | dEXT char rcsid[] = "perl.c\nPatch level: ###\n"; |
463ee0b2 | 25 | |
a687059c LW |
26 | #ifdef IAMSUID |
27 | #ifndef DOSUID | |
28 | #define DOSUID | |
29 | #endif | |
30 | #endif | |
378cc40b | 31 | |
a687059c LW |
32 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
33 | #ifdef DOSUID | |
34 | #undef DOSUID | |
35 | #endif | |
36 | #endif | |
8d063cd8 | 37 | |
a0d0e21e LW |
38 | static void find_beginning _((void)); |
39 | static void incpush _((char *)); | |
748a9306 | 40 | static void init_ids _((void)); |
a0d0e21e LW |
41 | static void init_debugger _((void)); |
42 | static void init_lexer _((void)); | |
43 | static void init_main_stash _((void)); | |
44 | static void init_perllib _((void)); | |
45 | static void init_postdump_symbols _((int, char **, char **)); | |
46 | static void init_predump_symbols _((void)); | |
47 | static void init_stacks _((void)); | |
48 | static void open_script _((char *, bool, SV *)); | |
49 | static void validate_suid _((char *)); | |
79072805 | 50 | |
93a17b20 | 51 | PerlInterpreter * |
79072805 LW |
52 | perl_alloc() |
53 | { | |
93a17b20 | 54 | PerlInterpreter *sv_interp; |
79072805 | 55 | |
8990e307 | 56 | curinterp = 0; |
93a17b20 | 57 | New(53, sv_interp, 1, PerlInterpreter); |
79072805 LW |
58 | return sv_interp; |
59 | } | |
60 | ||
61 | void | |
62 | perl_construct( sv_interp ) | |
93a17b20 | 63 | register PerlInterpreter *sv_interp; |
79072805 LW |
64 | { |
65 | if (!(curinterp = sv_interp)) | |
66 | return; | |
67 | ||
8990e307 | 68 | #ifdef MULTIPLICITY |
93a17b20 | 69 | Zero(sv_interp, 1, PerlInterpreter); |
8990e307 | 70 | #endif |
79072805 LW |
71 | |
72 | /* Init the real globals? */ | |
73 | if (!linestr) { | |
74 | linestr = NEWSV(65,80); | |
ed6116ce | 75 | sv_upgrade(linestr,SVt_PVIV); |
79072805 LW |
76 | |
77 | SvREADONLY_on(&sv_undef); | |
78 | ||
79 | sv_setpv(&sv_no,No); | |
463ee0b2 | 80 | SvNV(&sv_no); |
79072805 LW |
81 | SvREADONLY_on(&sv_no); |
82 | ||
83 | sv_setpv(&sv_yes,Yes); | |
463ee0b2 | 84 | SvNV(&sv_yes); |
79072805 LW |
85 | SvREADONLY_on(&sv_yes); |
86 | ||
c07a80fd | 87 | nrs = newSVpv("\n", 1); |
88 | rs = SvREFCNT_inc(nrs); | |
89 | ||
79072805 LW |
90 | #ifdef MSDOS |
91 | /* | |
92 | * There is no way we can refer to them from Perl so close them to save | |
93 | * space. The other alternative would be to provide STDAUX and STDPRN | |
94 | * filehandles. | |
95 | */ | |
96 | (void)fclose(stdaux); | |
97 | (void)fclose(stdprn); | |
98 | #endif | |
99 | } | |
100 | ||
8990e307 | 101 | #ifdef MULTIPLICITY |
79072805 | 102 | chopset = " \n-"; |
463ee0b2 | 103 | copline = NOLINE; |
79072805 | 104 | curcop = &compiling; |
1a30305b | 105 | dbargs = 0; |
79072805 LW |
106 | dlmax = 128; |
107 | laststatval = -1; | |
108 | laststype = OP_STAT; | |
109 | maxscream = -1; | |
110 | maxsysfd = MAXSYSFD; | |
79072805 | 111 | rsfp = Nullfp; |
463ee0b2 | 112 | statname = Nullsv; |
79072805 | 113 | tmps_floor = -1; |
79072805 LW |
114 | #endif |
115 | ||
748a9306 | 116 | init_ids(); |
a0d0e21e | 117 | sprintf(patchlevel, "%5.3f", 5.0 + (PATCHLEVEL / 1000.0)); |
79072805 LW |
118 | |
119 | fdpid = newAV(); /* for remembering popen pids by fd */ | |
463ee0b2 | 120 | pidstatus = newHV();/* for remembering status of dead pids */ |
8990e307 LW |
121 | |
122 | init_stacks(); | |
123 | ENTER; | |
79072805 LW |
124 | } |
125 | ||
126 | void | |
748a9306 | 127 | perl_destruct(sv_interp) |
93a17b20 | 128 | register PerlInterpreter *sv_interp; |
79072805 | 129 | { |
748a9306 | 130 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
8990e307 | 131 | I32 last_sv_count; |
a0d0e21e | 132 | HV *hv; |
8990e307 | 133 | |
79072805 LW |
134 | if (!(curinterp = sv_interp)) |
135 | return; | |
748a9306 LW |
136 | |
137 | destruct_level = perl_destruct_level; | |
4633a7c4 LW |
138 | #ifdef DEBUGGING |
139 | { | |
140 | char *s; | |
141 | if (s = getenv("PERL_DESTRUCT_LEVEL")) | |
142 | destruct_level = atoi(s); | |
143 | } | |
144 | #endif | |
145 | ||
8990e307 | 146 | LEAVE; |
a0d0e21e LW |
147 | FREETMPS; |
148 | ||
149 | if (sv_objcount) { | |
150 | /* We must account for everything. First the syntax tree. */ | |
151 | if (main_root) { | |
152 | curpad = AvARRAY(comppad); | |
153 | op_free(main_root); | |
154 | main_root = 0; | |
155 | } | |
156 | } | |
157 | if (sv_objcount) { | |
158 | /* | |
159 | * Try to destruct global references. We do this first so that the | |
160 | * destructors and destructees still exist. Some sv's might remain. | |
161 | * Non-referenced objects are on their own. | |
162 | */ | |
163 | ||
164 | dirty = TRUE; | |
165 | sv_clean_objs(); | |
8990e307 LW |
166 | } |
167 | ||
a0d0e21e | 168 | if (destruct_level == 0){ |
8990e307 | 169 | |
a0d0e21e LW |
170 | DEBUG_P(debprofdump()); |
171 | ||
172 | /* The exit() function will do everything that needs doing. */ | |
173 | return; | |
174 | } | |
175 | ||
176 | /* Prepare to destruct main symbol table. */ | |
177 | hv = defstash; | |
85e6fe83 | 178 | defstash = 0; |
a0d0e21e LW |
179 | SvREFCNT_dec(hv); |
180 | ||
181 | FREETMPS; | |
182 | if (destruct_level >= 2) { | |
183 | if (scopestack_ix != 0) | |
184 | warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); | |
185 | if (savestack_ix != 0) | |
186 | warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); | |
187 | if (tmps_floor != -1) | |
188 | warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); | |
189 | if (cxstack_ix != -1) | |
190 | warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); | |
191 | } | |
8990e307 LW |
192 | |
193 | /* Now absolutely destruct everything, somehow or other, loops or no. */ | |
8990e307 LW |
194 | last_sv_count = 0; |
195 | while (sv_count != 0 && sv_count != last_sv_count) { | |
196 | last_sv_count = sv_count; | |
197 | sv_clean_all(); | |
198 | } | |
199 | if (sv_count != 0) | |
200 | warn("Scalars leaked: %d\n", sv_count); | |
4633a7c4 | 201 | sv_free_arenas(); |
a0d0e21e LW |
202 | |
203 | DEBUG_P(debprofdump()); | |
79072805 LW |
204 | } |
205 | ||
206 | void | |
207 | perl_free(sv_interp) | |
93a17b20 | 208 | PerlInterpreter *sv_interp; |
79072805 LW |
209 | { |
210 | if (!(curinterp = sv_interp)) | |
211 | return; | |
212 | Safefree(sv_interp); | |
213 | } | |
ecfc5424 | 214 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
a0d0e21e LW |
215 | char *getenv _((char *)); /* Usually in <stdlib.h> */ |
216 | #endif | |
79072805 LW |
217 | |
218 | int | |
a0d0e21e | 219 | perl_parse(sv_interp, xsinit, argc, argv, env) |
93a17b20 | 220 | PerlInterpreter *sv_interp; |
a0d0e21e LW |
221 | void (*xsinit)_((void)); |
222 | int argc; | |
223 | char **argv; | |
79072805 | 224 | char **env; |
8d063cd8 | 225 | { |
79072805 | 226 | register SV *sv; |
8d063cd8 | 227 | register char *s; |
1a30305b | 228 | char *scriptname = NULL; |
a0d0e21e | 229 | VOL bool dosearch = FALSE; |
13281fa4 | 230 | char *validarg = ""; |
748a9306 | 231 | AV* comppadlist; |
8d063cd8 | 232 | |
a687059c LW |
233 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
234 | #ifdef IAMSUID | |
235 | #undef IAMSUID | |
463ee0b2 | 236 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
a687059c LW |
237 | setuid perl scripts securely.\n"); |
238 | #endif | |
239 | #endif | |
240 | ||
79072805 LW |
241 | if (!(curinterp = sv_interp)) |
242 | return 255; | |
243 | ||
ac58e20f LW |
244 | origargv = argv; |
245 | origargc = argc; | |
a0d0e21e | 246 | #ifndef VMS /* VMS doesn't have environ array */ |
fe14fcc3 | 247 | origenviron = environ; |
a0d0e21e LW |
248 | #endif |
249 | ||
250 | if (do_undump) { | |
251 | ||
252 | /* Come here if running an undumped a.out. */ | |
253 | ||
254 | origfilename = savepv(argv[0]); | |
255 | do_undump = FALSE; | |
256 | cxstack_ix = -1; /* start label stack again */ | |
748a9306 | 257 | init_ids(); |
a0d0e21e LW |
258 | init_postdump_symbols(argc,argv,env); |
259 | return 0; | |
260 | } | |
261 | ||
262 | if (main_root) | |
263 | op_free(main_root); | |
264 | main_root = 0; | |
79072805 LW |
265 | |
266 | switch (setjmp(top_env)) { | |
267 | case 1: | |
748a9306 | 268 | #ifdef VMS |
79072805 | 269 | statusvalue = 255; |
748a9306 LW |
270 | #else |
271 | statusvalue = 1; | |
272 | #endif | |
79072805 | 273 | case 2: |
8990e307 LW |
274 | curstash = defstash; |
275 | if (endav) | |
276 | calllist(endav); | |
79072805 LW |
277 | return(statusvalue); /* my_exit() was called */ |
278 | case 3: | |
279 | fprintf(stderr, "panic: top_env\n"); | |
8990e307 | 280 | return 1; |
79072805 LW |
281 | } |
282 | ||
79072805 LW |
283 | sv_setpvn(linestr,"",0); |
284 | sv = newSVpv("",0); /* first used for -I flags */ | |
8990e307 | 285 | SAVEFREESV(sv); |
79072805 | 286 | init_main_stash(); |
33b78306 | 287 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
288 | if (argv[0][0] != '-' || !argv[0][1]) |
289 | break; | |
13281fa4 LW |
290 | #ifdef DOSUID |
291 | if (*validarg) | |
292 | validarg = " PHOOEY "; | |
293 | else | |
294 | validarg = argv[0]; | |
295 | #endif | |
296 | s = argv[0]+1; | |
8d063cd8 | 297 | reswitch: |
13281fa4 | 298 | switch (*s) { |
27e2fb84 | 299 | case '0': |
2304df62 | 300 | case 'F': |
378cc40b | 301 | case 'a': |
33b78306 | 302 | case 'c': |
a687059c | 303 | case 'd': |
8d063cd8 | 304 | case 'D': |
4633a7c4 | 305 | case 'h': |
33b78306 | 306 | case 'i': |
fe14fcc3 | 307 | case 'l': |
1a30305b | 308 | case 'M': |
309 | case 'm': | |
33b78306 LW |
310 | case 'n': |
311 | case 'p': | |
79072805 | 312 | case 's': |
463ee0b2 | 313 | case 'T': |
33b78306 LW |
314 | case 'u': |
315 | case 'U': | |
316 | case 'v': | |
317 | case 'w': | |
318 | if (s = moreswitches(s)) | |
319 | goto reswitch; | |
8d063cd8 | 320 | break; |
33b78306 | 321 | |
8d063cd8 | 322 | case 'e': |
a687059c | 323 | if (euid != uid || egid != gid) |
463ee0b2 | 324 | croak("No -e allowed in setuid scripts"); |
8d063cd8 | 325 | if (!e_fp) { |
a0d0e21e | 326 | e_tmpname = savepv(TMPPATH); |
a687059c | 327 | (void)mktemp(e_tmpname); |
83025b21 | 328 | if (!*e_tmpname) |
463ee0b2 | 329 | croak("Can't mktemp()"); |
8d063cd8 | 330 | e_fp = fopen(e_tmpname,"w"); |
33b78306 | 331 | if (!e_fp) |
463ee0b2 | 332 | croak("Cannot open temporary file"); |
8d063cd8 | 333 | } |
33b78306 | 334 | if (argv[1]) { |
8d063cd8 | 335 | fputs(argv[1],e_fp); |
33b78306 LW |
336 | argc--,argv++; |
337 | } | |
a687059c | 338 | (void)putc('\n', e_fp); |
8d063cd8 LW |
339 | break; |
340 | case 'I': | |
463ee0b2 | 341 | taint_not("-I"); |
79072805 LW |
342 | sv_catpv(sv,"-"); |
343 | sv_catpv(sv,s); | |
344 | sv_catpv(sv," "); | |
a687059c | 345 | if (*++s) { |
a0d0e21e | 346 | av_push(GvAVn(incgv),newSVpv(s,0)); |
378cc40b | 347 | } |
33b78306 | 348 | else if (argv[1]) { |
a0d0e21e | 349 | av_push(GvAVn(incgv),newSVpv(argv[1],0)); |
79072805 | 350 | sv_catpv(sv,argv[1]); |
8d063cd8 | 351 | argc--,argv++; |
79072805 | 352 | sv_catpv(sv," "); |
8d063cd8 LW |
353 | } |
354 | break; | |
8d063cd8 | 355 | case 'P': |
463ee0b2 | 356 | taint_not("-P"); |
8d063cd8 | 357 | preprocess = TRUE; |
13281fa4 | 358 | s++; |
8d063cd8 | 359 | goto reswitch; |
378cc40b | 360 | case 'S': |
463ee0b2 | 361 | taint_not("-S"); |
378cc40b | 362 | dosearch = TRUE; |
13281fa4 | 363 | s++; |
378cc40b | 364 | goto reswitch; |
1a30305b | 365 | case 'V': |
366 | if (!preambleav) | |
367 | preambleav = newAV(); | |
368 | av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); | |
369 | if (*++s != ':') { | |
370 | Sv = newSVpv("print myconfig(),'@INC: '.\"@INC\\n\"",0); | |
371 | } | |
372 | else { | |
373 | Sv = newSVpv("config_vars(qw(",0); | |
374 | sv_catpv(Sv, ++s); | |
375 | sv_catpv(Sv, "))"); | |
376 | s += strlen(s); | |
377 | } | |
378 | av_push(preambleav, Sv); | |
c07a80fd | 379 | scriptname = BIT_BUCKET; /* don't look for script or read stdin */ |
1a30305b | 380 | goto reswitch; |
33b78306 LW |
381 | case 'x': |
382 | doextract = TRUE; | |
13281fa4 | 383 | s++; |
33b78306 | 384 | if (*s) |
a0d0e21e | 385 | cddir = savepv(s); |
33b78306 | 386 | break; |
8d063cd8 LW |
387 | case '-': |
388 | argc--,argv++; | |
389 | goto switch_end; | |
390 | case 0: | |
391 | break; | |
392 | default: | |
463ee0b2 | 393 | croak("Unrecognized switch: -%s",s); |
8d063cd8 LW |
394 | } |
395 | } | |
396 | switch_end: | |
1a30305b | 397 | if (!scriptname) |
398 | scriptname = argv[0]; | |
8d063cd8 | 399 | if (e_fp) { |
83025b21 | 400 | if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp)) |
2304df62 | 401 | croak("Can't write to temp file for -e: %s", Strerror(errno)); |
8d063cd8 | 402 | argc++,argv--; |
45d8adaa | 403 | scriptname = e_tmpname; |
8d063cd8 | 404 | } |
79072805 LW |
405 | else if (scriptname == Nullch) { |
406 | #ifdef MSDOS | |
407 | if ( isatty(fileno(stdin)) ) | |
408 | moreswitches("v"); | |
fe14fcc3 | 409 | #endif |
79072805 LW |
410 | scriptname = "-"; |
411 | } | |
fe14fcc3 | 412 | |
79072805 | 413 | init_perllib(); |
8d063cd8 | 414 | |
79072805 | 415 | open_script(scriptname,dosearch,sv); |
8d063cd8 | 416 | |
79072805 | 417 | validate_suid(validarg); |
378cc40b | 418 | |
79072805 LW |
419 | if (doextract) |
420 | find_beginning(); | |
421 | ||
748a9306 LW |
422 | compcv = (CV*)NEWSV(1104,0); |
423 | sv_upgrade((SV *)compcv, SVt_PVCV); | |
424 | ||
79072805 LW |
425 | pad = newAV(); |
426 | comppad = pad; | |
427 | av_push(comppad, Nullsv); | |
428 | curpad = AvARRAY(comppad); | |
93a17b20 | 429 | padname = newAV(); |
8990e307 LW |
430 | comppad_name = padname; |
431 | comppad_name_fill = 0; | |
432 | min_intro_pending = 0; | |
79072805 LW |
433 | padix = 0; |
434 | ||
748a9306 LW |
435 | comppadlist = newAV(); |
436 | AvREAL_off(comppadlist); | |
8e07c86e AD |
437 | av_store(comppadlist, 0, (SV*)comppad_name); |
438 | av_store(comppadlist, 1, (SV*)comppad); | |
748a9306 LW |
439 | CvPADLIST(compcv) = comppadlist; |
440 | ||
a0d0e21e LW |
441 | if (xsinit) |
442 | (*xsinit)(); /* in case linked C routines want magical variables */ | |
748a9306 LW |
443 | #ifdef VMS |
444 | init_os_extras(); | |
445 | #endif | |
93a17b20 | 446 | |
93a17b20 | 447 | init_predump_symbols(); |
8990e307 LW |
448 | if (!do_undump) |
449 | init_postdump_symbols(argc,argv,env); | |
93a17b20 | 450 | |
79072805 LW |
451 | init_lexer(); |
452 | ||
453 | /* now parse the script */ | |
454 | ||
455 | error_count = 0; | |
456 | if (yyparse() || error_count) { | |
457 | if (minus_c) | |
463ee0b2 | 458 | croak("%s had compilation errors.\n", origfilename); |
79072805 | 459 | else { |
463ee0b2 | 460 | croak("Execution of %s aborted due to compilation errors.\n", |
79072805 | 461 | origfilename); |
378cc40b | 462 | } |
79072805 LW |
463 | } |
464 | curcop->cop_line = 0; | |
465 | curstash = defstash; | |
466 | preprocess = FALSE; | |
467 | if (e_fp) { | |
468 | e_fp = Nullfp; | |
469 | (void)UNLINK(e_tmpname); | |
378cc40b | 470 | } |
a687059c | 471 | |
93a17b20 | 472 | /* now that script is parsed, we can modify record separator */ |
c07a80fd | 473 | SvREFCNT_dec(rs); |
474 | rs = SvREFCNT_inc(nrs); | |
475 | sv_setsv(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs); | |
45d8adaa | 476 | |
79072805 LW |
477 | if (do_undump) |
478 | my_unexec(); | |
479 | ||
8990e307 LW |
480 | if (dowarn) |
481 | gv_check(defstash); | |
482 | ||
a0d0e21e LW |
483 | LEAVE; |
484 | FREETMPS; | |
c07a80fd | 485 | |
486 | #ifdef DEBUGGING_MSTATS | |
487 | if ((s=getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) | |
488 | dump_mstats("after compilation:"); | |
489 | #endif | |
490 | ||
a0d0e21e LW |
491 | ENTER; |
492 | restartop = 0; | |
79072805 LW |
493 | return 0; |
494 | } | |
495 | ||
496 | int | |
497 | perl_run(sv_interp) | |
93a17b20 | 498 | PerlInterpreter *sv_interp; |
79072805 LW |
499 | { |
500 | if (!(curinterp = sv_interp)) | |
501 | return 255; | |
502 | switch (setjmp(top_env)) { | |
503 | case 1: | |
504 | cxstack_ix = -1; /* start context stack again */ | |
505 | break; | |
506 | case 2: | |
507 | curstash = defstash; | |
93a17b20 LW |
508 | if (endav) |
509 | calllist(endav); | |
a0d0e21e | 510 | FREETMPS; |
c07a80fd | 511 | #ifdef DEBUGGING_MSTATS |
512 | if (getenv("PERL_DEBUG_MSTATS")) | |
513 | dump_mstats("after execution: "); | |
514 | #endif | |
93a17b20 | 515 | return(statusvalue); /* my_exit() was called */ |
79072805 LW |
516 | case 3: |
517 | if (!restartop) { | |
518 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 519 | FREETMPS; |
8990e307 | 520 | return 1; |
83025b21 | 521 | } |
79072805 LW |
522 | if (stack != mainstack) { |
523 | dSP; | |
524 | SWITCHSTACK(stack, mainstack); | |
525 | } | |
526 | break; | |
8d063cd8 | 527 | } |
79072805 LW |
528 | |
529 | if (!restartop) { | |
530 | DEBUG_x(dump_all()); | |
531 | DEBUG(fprintf(stderr,"\nEXECUTING...\n\n")); | |
532 | ||
533 | if (minus_c) { | |
534 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
535 | my_exit(0); | |
536 | } | |
a0d0e21e LW |
537 | if (perldb && DBsingle) |
538 | sv_setiv(DBsingle, 1); | |
45d8adaa | 539 | } |
79072805 LW |
540 | |
541 | /* do it */ | |
542 | ||
543 | if (restartop) { | |
544 | op = restartop; | |
545 | restartop = 0; | |
546 | run(); | |
547 | } | |
548 | else if (main_start) { | |
549 | op = main_start; | |
550 | run(); | |
551 | } | |
79072805 LW |
552 | |
553 | my_exit(0); | |
a0d0e21e | 554 | return 0; |
79072805 LW |
555 | } |
556 | ||
557 | void | |
558 | my_exit(status) | |
748a9306 | 559 | U32 status; |
79072805 | 560 | { |
a0d0e21e LW |
561 | register CONTEXT *cx; |
562 | I32 gimme; | |
563 | SV **newsp; | |
564 | ||
748a9306 | 565 | statusvalue = FIXSTATUS(status); |
a0d0e21e LW |
566 | if (cxstack_ix >= 0) { |
567 | if (cxstack_ix > 0) | |
568 | dounwind(0); | |
569 | POPBLOCK(cx,curpm); | |
570 | LEAVE; | |
571 | } | |
79072805 LW |
572 | longjmp(top_env, 2); |
573 | } | |
574 | ||
a0d0e21e LW |
575 | SV* |
576 | perl_get_sv(name, create) | |
577 | char* name; | |
578 | I32 create; | |
579 | { | |
580 | GV* gv = gv_fetchpv(name, create, SVt_PV); | |
581 | if (gv) | |
582 | return GvSV(gv); | |
583 | return Nullsv; | |
584 | } | |
585 | ||
586 | AV* | |
587 | perl_get_av(name, create) | |
588 | char* name; | |
589 | I32 create; | |
590 | { | |
591 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); | |
592 | if (create) | |
593 | return GvAVn(gv); | |
594 | if (gv) | |
595 | return GvAV(gv); | |
596 | return Nullav; | |
597 | } | |
598 | ||
599 | HV* | |
600 | perl_get_hv(name, create) | |
601 | char* name; | |
602 | I32 create; | |
603 | { | |
604 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); | |
605 | if (create) | |
606 | return GvHVn(gv); | |
607 | if (gv) | |
608 | return GvHV(gv); | |
609 | return Nullhv; | |
610 | } | |
611 | ||
612 | CV* | |
613 | perl_get_cv(name, create) | |
614 | char* name; | |
615 | I32 create; | |
616 | { | |
617 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); | |
618 | if (create && !GvCV(gv)) | |
619 | return newSUB(start_subparse(), | |
620 | newSVOP(OP_CONST, 0, newSVpv(name,0)), | |
4633a7c4 | 621 | Nullop, |
a0d0e21e LW |
622 | Nullop); |
623 | if (gv) | |
624 | return GvCV(gv); | |
625 | return Nullcv; | |
626 | } | |
627 | ||
79072805 LW |
628 | /* Be sure to refetch the stack pointer after calling these routines. */ |
629 | ||
a0d0e21e LW |
630 | I32 |
631 | perl_call_argv(subname, flags, argv) | |
8990e307 | 632 | char *subname; |
a0d0e21e LW |
633 | I32 flags; /* See G_* flags in cop.h */ |
634 | register char **argv; /* null terminated arg list */ | |
8990e307 | 635 | { |
a0d0e21e | 636 | dSP; |
8990e307 | 637 | |
a0d0e21e LW |
638 | PUSHMARK(sp); |
639 | if (argv) { | |
8990e307 | 640 | while (*argv) { |
a0d0e21e | 641 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
8990e307 LW |
642 | argv++; |
643 | } | |
a0d0e21e | 644 | PUTBACK; |
8990e307 | 645 | } |
a0d0e21e | 646 | return perl_call_pv(subname, flags); |
8990e307 LW |
647 | } |
648 | ||
a0d0e21e LW |
649 | I32 |
650 | perl_call_pv(subname, flags) | |
651 | char *subname; /* name of the subroutine */ | |
652 | I32 flags; /* See G_* flags in cop.h */ | |
653 | { | |
654 | return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); | |
655 | } | |
656 | ||
657 | I32 | |
658 | perl_call_method(methname, flags) | |
659 | char *methname; /* name of the subroutine */ | |
660 | I32 flags; /* See G_* flags in cop.h */ | |
661 | { | |
662 | dSP; | |
663 | OP myop; | |
664 | if (!op) | |
665 | op = &myop; | |
666 | XPUSHs(sv_2mortal(newSVpv(methname,0))); | |
667 | PUTBACK; | |
668 | pp_method(); | |
669 | return perl_call_sv(*stack_sp--, flags); | |
670 | } | |
671 | ||
672 | /* May be called with any of a CV, a GV, or an SV containing the name. */ | |
673 | I32 | |
674 | perl_call_sv(sv, flags) | |
675 | SV* sv; | |
676 | I32 flags; /* See G_* flags in cop.h */ | |
677 | { | |
678 | LOGOP myop; /* fake syntax tree node */ | |
679 | SV** sp = stack_sp; | |
680 | I32 oldmark = TOPMARK; | |
681 | I32 retval; | |
682 | jmp_buf oldtop; | |
683 | I32 oldscope; | |
684 | ||
685 | if (flags & G_DISCARD) { | |
686 | ENTER; | |
687 | SAVETMPS; | |
688 | } | |
689 | ||
690 | SAVESPTR(op); | |
691 | op = (OP*)&myop; | |
692 | Zero(op, 1, LOGOP); | |
693 | EXTEND(stack_sp, 1); | |
694 | *++stack_sp = sv; | |
695 | oldscope = scopestack_ix; | |
696 | ||
697 | if (!(flags & G_NOARGS)) | |
698 | myop.op_flags = OPf_STACKED; | |
699 | myop.op_next = Nullop; | |
700 | myop.op_flags |= OPf_KNOW; | |
701 | if (flags & G_ARRAY) | |
702 | myop.op_flags |= OPf_LIST; | |
703 | ||
704 | if (flags & G_EVAL) { | |
705 | Copy(top_env, oldtop, 1, jmp_buf); | |
706 | ||
707 | cLOGOP->op_other = op; | |
708 | markstack_ptr--; | |
4633a7c4 LW |
709 | /* we're trying to emulate pp_entertry() here */ |
710 | { | |
711 | register CONTEXT *cx; | |
712 | I32 gimme = GIMME; | |
713 | ||
714 | ENTER; | |
715 | SAVETMPS; | |
716 | ||
717 | push_return(op->op_next); | |
718 | PUSHBLOCK(cx, CXt_EVAL, stack_sp); | |
719 | PUSHEVAL(cx, 0, 0); | |
720 | eval_root = op; /* Only needed so that goto works right. */ | |
721 | ||
722 | in_eval = 1; | |
723 | if (flags & G_KEEPERR) | |
724 | in_eval |= 4; | |
725 | else | |
726 | sv_setpv(GvSV(errgv),""); | |
727 | } | |
a0d0e21e LW |
728 | markstack_ptr++; |
729 | ||
730 | restart: | |
731 | switch (setjmp(top_env)) { | |
732 | case 0: | |
733 | break; | |
734 | case 1: | |
748a9306 | 735 | #ifdef VMS |
a0d0e21e | 736 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
737 | #else |
738 | statusvalue = 1; | |
739 | #endif | |
a0d0e21e LW |
740 | /* FALL THROUGH */ |
741 | case 2: | |
742 | /* my_exit() was called */ | |
743 | curstash = defstash; | |
744 | FREETMPS; | |
745 | Copy(oldtop, top_env, 1, jmp_buf); | |
746 | if (statusvalue) | |
747 | croak("Callback called exit"); | |
748 | my_exit(statusvalue); | |
749 | /* NOTREACHED */ | |
750 | case 3: | |
751 | if (restartop) { | |
752 | op = restartop; | |
753 | restartop = 0; | |
754 | goto restart; | |
755 | } | |
756 | stack_sp = stack_base + oldmark; | |
757 | if (flags & G_ARRAY) | |
758 | retval = 0; | |
759 | else { | |
760 | retval = 1; | |
761 | *++stack_sp = &sv_undef; | |
762 | } | |
763 | goto cleanup; | |
764 | } | |
765 | } | |
766 | ||
767 | if (op == (OP*)&myop) | |
768 | op = pp_entersub(); | |
769 | if (op) | |
770 | run(); | |
771 | retval = stack_sp - (stack_base + oldmark); | |
4633a7c4 LW |
772 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
773 | sv_setpv(GvSV(errgv),""); | |
a0d0e21e LW |
774 | |
775 | cleanup: | |
776 | if (flags & G_EVAL) { | |
777 | if (scopestack_ix > oldscope) { | |
a0a2876f LW |
778 | SV **newsp; |
779 | PMOP *newpm; | |
780 | I32 gimme; | |
781 | register CONTEXT *cx; | |
782 | I32 optype; | |
783 | ||
784 | POPBLOCK(cx,newpm); | |
785 | POPEVAL(cx); | |
786 | pop_return(); | |
787 | curpm = newpm; | |
788 | LEAVE; | |
a0d0e21e LW |
789 | } |
790 | Copy(oldtop, top_env, 1, jmp_buf); | |
791 | } | |
792 | if (flags & G_DISCARD) { | |
793 | stack_sp = stack_base + oldmark; | |
794 | retval = 0; | |
795 | FREETMPS; | |
796 | LEAVE; | |
797 | } | |
798 | return retval; | |
799 | } | |
800 | ||
4633a7c4 | 801 | /* Eval a string. */ |
8990e307 | 802 | |
a0d0e21e | 803 | I32 |
4633a7c4 | 804 | perl_eval_sv(sv, flags) |
8990e307 | 805 | SV* sv; |
4633a7c4 | 806 | I32 flags; /* See G_* flags in cop.h */ |
a0d0e21e LW |
807 | { |
808 | UNOP myop; /* fake syntax tree node */ | |
4633a7c4 LW |
809 | SV** sp = stack_sp; |
810 | I32 oldmark = sp - stack_base; | |
811 | I32 retval; | |
812 | jmp_buf oldtop; | |
813 | I32 oldscope; | |
79072805 | 814 | |
4633a7c4 LW |
815 | if (flags & G_DISCARD) { |
816 | ENTER; | |
817 | SAVETMPS; | |
818 | } | |
819 | ||
79072805 | 820 | SAVESPTR(op); |
79072805 | 821 | op = (OP*)&myop; |
a0d0e21e | 822 | Zero(op, 1, UNOP); |
4633a7c4 LW |
823 | EXTEND(stack_sp, 1); |
824 | *++stack_sp = sv; | |
825 | oldscope = scopestack_ix; | |
79072805 | 826 | |
4633a7c4 LW |
827 | if (!(flags & G_NOARGS)) |
828 | myop.op_flags = OPf_STACKED; | |
79072805 | 829 | myop.op_next = Nullop; |
4633a7c4 LW |
830 | myop.op_flags |= OPf_KNOW; |
831 | if (flags & G_ARRAY) | |
832 | myop.op_flags |= OPf_LIST; | |
79072805 | 833 | |
4633a7c4 LW |
834 | Copy(top_env, oldtop, 1, jmp_buf); |
835 | ||
836 | restart: | |
837 | switch (setjmp(top_env)) { | |
838 | case 0: | |
839 | break; | |
840 | case 1: | |
841 | #ifdef VMS | |
842 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ | |
843 | #else | |
844 | statusvalue = 1; | |
845 | #endif | |
846 | /* FALL THROUGH */ | |
847 | case 2: | |
848 | /* my_exit() was called */ | |
849 | curstash = defstash; | |
850 | FREETMPS; | |
851 | Copy(oldtop, top_env, 1, jmp_buf); | |
852 | if (statusvalue) | |
853 | croak("Callback called exit"); | |
854 | my_exit(statusvalue); | |
855 | /* NOTREACHED */ | |
856 | case 3: | |
857 | if (restartop) { | |
858 | op = restartop; | |
859 | restartop = 0; | |
860 | goto restart; | |
861 | } | |
862 | stack_sp = stack_base + oldmark; | |
863 | if (flags & G_ARRAY) | |
864 | retval = 0; | |
865 | else { | |
866 | retval = 1; | |
867 | *++stack_sp = &sv_undef; | |
868 | } | |
869 | goto cleanup; | |
870 | } | |
871 | ||
872 | if (op == (OP*)&myop) | |
873 | op = pp_entereval(); | |
874 | if (op) | |
463ee0b2 | 875 | run(); |
4633a7c4 LW |
876 | retval = stack_sp - (stack_base + oldmark); |
877 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) | |
878 | sv_setpv(GvSV(errgv),""); | |
879 | ||
880 | cleanup: | |
881 | Copy(oldtop, top_env, 1, jmp_buf); | |
882 | if (flags & G_DISCARD) { | |
883 | stack_sp = stack_base + oldmark; | |
884 | retval = 0; | |
885 | FREETMPS; | |
886 | LEAVE; | |
887 | } | |
888 | return retval; | |
889 | } | |
890 | ||
891 | /* Require a module. */ | |
892 | ||
893 | void | |
894 | perl_require_pv(pv) | |
895 | char* pv; | |
896 | { | |
897 | SV* sv = sv_newmortal(); | |
898 | sv_setpv(sv, "require '"); | |
899 | sv_catpv(sv, pv); | |
900 | sv_catpv(sv, "'"); | |
901 | perl_eval_sv(sv, G_DISCARD); | |
79072805 LW |
902 | } |
903 | ||
79072805 | 904 | void |
79072805 LW |
905 | magicname(sym,name,namlen) |
906 | char *sym; | |
907 | char *name; | |
908 | I32 namlen; | |
909 | { | |
910 | register GV *gv; | |
911 | ||
85e6fe83 | 912 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
79072805 LW |
913 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
914 | } | |
915 | ||
748a9306 LW |
916 | #if defined(DOSISH) |
917 | # define PERLLIB_SEP ';' | |
79072805 | 918 | #else |
232e078e AD |
919 | # if defined(VMS) |
920 | # define PERLLIB_SEP '|' | |
921 | # else | |
748a9306 | 922 | # define PERLLIB_SEP ':' |
232e078e | 923 | # endif |
79072805 LW |
924 | #endif |
925 | ||
926 | static void | |
927 | incpush(p) | |
928 | char *p; | |
929 | { | |
930 | char *s; | |
931 | ||
932 | if (!p) | |
933 | return; | |
934 | ||
935 | /* Break at all separators */ | |
936 | while (*p) { | |
937 | /* First, skip any consecutive separators */ | |
938 | while ( *p == PERLLIB_SEP ) { | |
939 | /* Uncomment the next line for PATH semantics */ | |
a0d0e21e | 940 | /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ |
79072805 LW |
941 | p++; |
942 | } | |
93a17b20 | 943 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
a0d0e21e | 944 | av_push(GvAVn(incgv), newSVpv(p, (STRLEN)(s - p))); |
79072805 LW |
945 | p = s + 1; |
946 | } else { | |
a0d0e21e | 947 | av_push(GvAVn(incgv), newSVpv(p, 0)); |
79072805 LW |
948 | break; |
949 | } | |
950 | } | |
951 | } | |
952 | ||
4633a7c4 | 953 | void |
1a30305b | 954 | usage(name) /* XXX move this out into a module ? */ |
4633a7c4 LW |
955 | char *name; |
956 | { | |
957 | printf("\nUsage: %s [switches] [filename] [arguments]\n",name); | |
958 | printf("\n -0[octal] specify record separator (\\0, if no argument)"); | |
959 | printf("\n -a autosplit mode with -n or -p"); | |
960 | printf("\n -c check syntax only (runs BEGIN and END blocks)"); | |
1a30305b | 961 | printf("\n -d[:debugger] run scripts under debugger"); |
4633a7c4 LW |
962 | printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)"); |
963 | printf("\n -e command one line of script, multiple -e options are allowed"); | |
964 | printf("\n [filename] can be ommitted when -e is used"); | |
965 | printf("\n -F regexp regular expression for autosplit (-a)"); | |
966 | printf("\n -i[extension] edit <> files in place (make backup if extension supplied)"); | |
967 | printf("\n -Idirectory specify include directory (may be used more then once)"); | |
968 | printf("\n -l[octal] enable line ending processing, specifies line teminator"); | |
969 | printf("\n -n assume 'while (<>) { ... }' loop arround your script"); | |
970 | printf("\n -p assume loop like -n but print line also like sed"); | |
971 | printf("\n -P run script through C preprocessor before compilation"); | |
972 | #ifdef OS2 | |
973 | printf("\n -R enable REXX variable pool"); | |
974 | #endif | |
975 | printf("\n -s enable some switch parsing for switches after script name"); | |
976 | printf("\n -S look for the script using PATH environment variable"); | |
977 | printf("\n -T turn on tainting checks"); | |
978 | printf("\n -u dump core after parsing script"); | |
979 | printf("\n -U allow unsafe operations"); | |
980 | printf("\n -v print version number and patchlevel of perl"); | |
1a30305b | 981 | printf("\n -V[:variable] print perl configuration information"); |
4633a7c4 LW |
982 | printf("\n -w turn warnings on for compilation of your script"); |
983 | printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); | |
984 | } | |
985 | ||
79072805 LW |
986 | /* This routine handles any switches that can be given during run */ |
987 | ||
988 | char * | |
989 | moreswitches(s) | |
990 | char *s; | |
991 | { | |
992 | I32 numlen; | |
c07a80fd | 993 | U32 rschar; |
79072805 LW |
994 | |
995 | switch (*s) { | |
996 | case '0': | |
c07a80fd | 997 | rschar = scan_oct(s, 4, &numlen); |
998 | SvREFCNT_dec(nrs); | |
999 | if (rschar & ~((U8)~0)) | |
1000 | nrs = &sv_undef; | |
1001 | else if (!rschar && numlen >= 2) | |
1002 | nrs = newSVpv("", 0); | |
1003 | else { | |
1004 | char ch = rschar; | |
1005 | nrs = newSVpv(&ch, 1); | |
79072805 LW |
1006 | } |
1007 | return s + numlen; | |
2304df62 AD |
1008 | case 'F': |
1009 | minus_F = TRUE; | |
a0d0e21e | 1010 | splitstr = savepv(s + 1); |
2304df62 AD |
1011 | s += strlen(s); |
1012 | return s; | |
79072805 LW |
1013 | case 'a': |
1014 | minus_a = TRUE; | |
1015 | s++; | |
1016 | return s; | |
1017 | case 'c': | |
1018 | minus_c = TRUE; | |
1019 | s++; | |
1020 | return s; | |
1021 | case 'd': | |
463ee0b2 | 1022 | taint_not("-d"); |
4633a7c4 | 1023 | s++; |
c07a80fd | 1024 | if (*s == ':' || *s == '=') { |
4633a7c4 LW |
1025 | sprintf(buf, "use Devel::%s;", ++s); |
1026 | s += strlen(s); | |
1027 | my_setenv("PERL5DB",buf); | |
1028 | } | |
a0d0e21e LW |
1029 | if (!perldb) { |
1030 | perldb = TRUE; | |
1031 | init_debugger(); | |
1032 | } | |
79072805 LW |
1033 | return s; |
1034 | case 'D': | |
1035 | #ifdef DEBUGGING | |
463ee0b2 | 1036 | taint_not("-D"); |
79072805 | 1037 | if (isALPHA(s[1])) { |
8990e307 | 1038 | static char debopts[] = "psltocPmfrxuLHXD"; |
79072805 LW |
1039 | char *d; |
1040 | ||
93a17b20 | 1041 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
79072805 LW |
1042 | debug |= 1 << (d - debopts); |
1043 | } | |
1044 | else { | |
1045 | debug = atoi(s+1); | |
1046 | for (s++; isDIGIT(*s); s++) ; | |
1047 | } | |
8990e307 | 1048 | debug |= 0x80000000; |
79072805 LW |
1049 | #else |
1050 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
a0d0e21e | 1051 | for (s++; isALNUM(*s); s++) ; |
79072805 LW |
1052 | #endif |
1053 | /*SUPPRESS 530*/ | |
1054 | return s; | |
4633a7c4 LW |
1055 | case 'h': |
1056 | usage(origargv[0]); | |
1057 | exit(0); | |
79072805 LW |
1058 | case 'i': |
1059 | if (inplace) | |
1060 | Safefree(inplace); | |
a0d0e21e | 1061 | inplace = savepv(s+1); |
79072805 LW |
1062 | /*SUPPRESS 530*/ |
1063 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
1064 | *s = '\0'; | |
1065 | break; | |
1066 | case 'I': | |
463ee0b2 | 1067 | taint_not("-I"); |
79072805 | 1068 | if (*++s) { |
748a9306 LW |
1069 | char *e; |
1070 | for (e = s; *e && !isSPACE(*e); e++) ; | |
1071 | av_push(GvAVn(incgv),newSVpv(s,e-s)); | |
1072 | if (*e) | |
1073 | return e; | |
79072805 LW |
1074 | } |
1075 | else | |
463ee0b2 | 1076 | croak("No space allowed after -I"); |
79072805 LW |
1077 | break; |
1078 | case 'l': | |
1079 | minus_l = TRUE; | |
1080 | s++; | |
a0d0e21e LW |
1081 | if (ors) |
1082 | Safefree(ors); | |
79072805 | 1083 | if (isDIGIT(*s)) { |
a0d0e21e | 1084 | ors = savepv("\n"); |
79072805 LW |
1085 | orslen = 1; |
1086 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); | |
1087 | s += numlen; | |
1088 | } | |
1089 | else { | |
c07a80fd | 1090 | if (RsPARA(nrs)) { |
1091 | ors = savepvn("\n\n", 2); | |
1092 | orslen = 2; | |
1093 | } | |
1094 | else | |
1095 | ors = SvPV(nrs, orslen); | |
79072805 LW |
1096 | } |
1097 | return s; | |
1a30305b | 1098 | case 'M': |
1099 | taint_not("-M"); /* XXX ? */ | |
1100 | /* FALL THROUGH */ | |
1101 | case 'm': | |
1102 | taint_not("-m"); /* XXX ? */ | |
1103 | if (*++s) { | |
c07a80fd | 1104 | char *start = s; |
1105 | Sv = newSVpv("use ",4); | |
1a30305b | 1106 | /* We allow -M'Module qw(Foo Bar)' */ |
c07a80fd | 1107 | while(isALNUM(*s) || *s==':') ++s; |
1108 | if (*s != '=') { | |
1109 | sv_catpv(Sv, start); | |
1110 | if (*(start-1) == 'm') { | |
1111 | if (*s != '\0') | |
1112 | croak("Can't use '%c' after -mname", *s); | |
1113 | sv_catpv( Sv, " ()"); | |
1114 | } | |
1115 | } else { | |
1116 | sv_catpvn(Sv, start, s-start); | |
1117 | sv_catpv(Sv, " qw("); | |
1118 | sv_catpv(Sv, ++s); | |
1119 | sv_catpv(Sv, ")"); | |
1120 | } | |
1a30305b | 1121 | s += strlen(s); |
c07a80fd | 1122 | if (preambleav == NULL) |
1123 | preambleav = newAV(); | |
1124 | av_push(preambleav, Sv); | |
1a30305b | 1125 | } |
1126 | else | |
1127 | croak("No space allowed after -%c", *(s-1)); | |
1128 | return s; | |
79072805 LW |
1129 | case 'n': |
1130 | minus_n = TRUE; | |
1131 | s++; | |
1132 | return s; | |
1133 | case 'p': | |
1134 | minus_p = TRUE; | |
1135 | s++; | |
1136 | return s; | |
1137 | case 's': | |
463ee0b2 | 1138 | taint_not("-s"); |
79072805 LW |
1139 | doswitches = TRUE; |
1140 | s++; | |
1141 | return s; | |
463ee0b2 LW |
1142 | case 'T': |
1143 | tainting = TRUE; | |
1144 | s++; | |
1145 | return s; | |
79072805 LW |
1146 | case 'u': |
1147 | do_undump = TRUE; | |
1148 | s++; | |
1149 | return s; | |
1150 | case 'U': | |
1151 | unsafe = TRUE; | |
1152 | s++; | |
1153 | return s; | |
1154 | case 'v': | |
c07a80fd | 1155 | printf("\nThis is perl, version %s beta3",patchlevel); |
1a30305b | 1156 | |
1157 | #if defined(DEBUGGING) || defined(EMBED) || defined(MULTIPLICITY) | |
1158 | fputs(" with", stdout); | |
1159 | #ifdef DEBUGGING | |
1160 | fputs(" DEBUGGING", stdout); | |
1161 | #endif | |
1162 | #ifdef EMBED | |
1163 | fputs(" EMBED", stdout); | |
1164 | #endif | |
1165 | #ifdef MULTIPLICITY | |
1166 | fputs(" MULTIPLICITY", stdout); | |
1167 | #endif | |
1168 | #endif | |
1169 | ||
1170 | fputs("\n\nCopyright 1987-1996, Larry Wall\n",stdout); | |
79072805 LW |
1171 | #ifdef MSDOS |
1172 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
1173 | stdout); | |
4633a7c4 | 1174 | #endif |
79072805 | 1175 | #ifdef OS2 |
1a30305b | 1176 | fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
1177 | "Version 5 port Copyright (c) 1994-1995, Andreas Kaiser\n", stdout); | |
79072805 | 1178 | #endif |
79072805 | 1179 | #ifdef atarist |
1a30305b | 1180 | fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout); |
79072805 LW |
1181 | #endif |
1182 | fputs("\n\ | |
1183 | Perl may be copied only under the terms of either the Artistic License or the\n\ | |
1a30305b | 1184 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n",stdout); |
79072805 LW |
1185 | #ifdef MSDOS |
1186 | usage(origargv[0]); | |
1187 | #endif | |
1188 | exit(0); | |
1189 | case 'w': | |
1190 | dowarn = TRUE; | |
1191 | s++; | |
1192 | return s; | |
a0d0e21e | 1193 | case '*': |
79072805 LW |
1194 | case ' ': |
1195 | if (s[1] == '-') /* Additional switches on #! line. */ | |
1196 | return s+2; | |
1197 | break; | |
a0d0e21e | 1198 | case '-': |
79072805 LW |
1199 | case 0: |
1200 | case '\n': | |
1201 | case '\t': | |
1202 | break; | |
a0d0e21e LW |
1203 | case 'P': |
1204 | if (preprocess) | |
1205 | return s+1; | |
1206 | /* FALL THROUGH */ | |
79072805 | 1207 | default: |
a0d0e21e | 1208 | croak("Can't emulate -%.1s on #! line",s); |
79072805 LW |
1209 | } |
1210 | return Nullch; | |
1211 | } | |
1212 | ||
1213 | /* compliments of Tom Christiansen */ | |
1214 | ||
1215 | /* unexec() can be found in the Gnu emacs distribution */ | |
1216 | ||
1217 | void | |
1218 | my_unexec() | |
1219 | { | |
1220 | #ifdef UNEXEC | |
1221 | int status; | |
1222 | extern int etext; | |
1223 | ||
1224 | sprintf (buf, "%s.perldump", origfilename); | |
1225 | sprintf (tokenbuf, "%s/perl", BIN); | |
1226 | ||
1227 | status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); | |
1228 | if (status) | |
1229 | fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); | |
a0d0e21e | 1230 | exit(status); |
79072805 LW |
1231 | #else |
1232 | ABORT(); /* for use with undump */ | |
1233 | #endif | |
1234 | } | |
1235 | ||
1236 | static void | |
1237 | init_main_stash() | |
1238 | { | |
463ee0b2 LW |
1239 | GV *gv; |
1240 | curstash = defstash = newHV(); | |
79072805 | 1241 | curstname = newSVpv("main",4); |
adbc6bb1 LW |
1242 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
1243 | SvREFCNT_dec(GvHV(gv)); | |
1244 | GvHV(gv) = (HV*)SvREFCNT_inc(defstash); | |
463ee0b2 | 1245 | SvREADONLY_on(gv); |
a0d0e21e | 1246 | HvNAME(defstash) = savepv("main"); |
85e6fe83 | 1247 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
79072805 | 1248 | SvMULTI_on(incgv); |
a0d0e21e | 1249 | defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
4633a7c4 LW |
1250 | errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
1251 | SvMULTI_on(errgv); | |
8990e307 LW |
1252 | curstash = defstash; |
1253 | compiling.cop_stash = defstash; | |
adbc6bb1 | 1254 | debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
4633a7c4 LW |
1255 | /* We must init $/ before switches are processed. */ |
1256 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); | |
79072805 LW |
1257 | } |
1258 | ||
a0d0e21e LW |
1259 | #ifdef CAN_PROTOTYPE |
1260 | static void | |
1261 | open_script(char *scriptname, bool dosearch, SV *sv) | |
1262 | #else | |
79072805 LW |
1263 | static void |
1264 | open_script(scriptname,dosearch,sv) | |
1265 | char *scriptname; | |
1266 | bool dosearch; | |
1267 | SV *sv; | |
a0d0e21e | 1268 | #endif |
79072805 LW |
1269 | { |
1270 | char *xfound = Nullch; | |
1271 | char *xfailed = Nullch; | |
1272 | register char *s; | |
1273 | I32 len; | |
1274 | ||
c07a80fd | 1275 | #ifdef VMS |
1276 | if (dosearch && !strpbrk(scriptname,":[</") && (my_getenv("DCL$PATH"))) { | |
1277 | int idx = 0; | |
1278 | ||
1279 | while (my_trnlnm("DCL$PATH",tokenbuf,idx++)) { | |
1280 | strcat(tokenbuf,scriptname); | |
1281 | #else /* !VMS */ | |
93a17b20 | 1282 | if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { |
79072805 LW |
1283 | |
1284 | bufend = s + strlen(s); | |
1285 | while (*s) { | |
1286 | #ifndef DOSISH | |
1287 | s = cpytill(tokenbuf,s,bufend,':',&len); | |
1288 | #else | |
1289 | #ifdef atarist | |
1290 | for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); | |
1291 | tokenbuf[len] = '\0'; | |
1292 | #else | |
1293 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
1294 | tokenbuf[len] = '\0'; | |
1295 | #endif | |
1296 | #endif | |
1297 | if (*s) | |
1298 | s++; | |
1299 | #ifndef DOSISH | |
1300 | if (len && tokenbuf[len-1] != '/') | |
1301 | #else | |
1302 | #ifdef atarist | |
1303 | if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) | |
1304 | #else | |
1305 | if (len && tokenbuf[len-1] != '\\') | |
1306 | #endif | |
1307 | #endif | |
1308 | (void)strcat(tokenbuf+len,"/"); | |
1309 | (void)strcat(tokenbuf+len,scriptname); | |
c07a80fd | 1310 | #endif /* !VMS */ |
79072805 | 1311 | DEBUG_p(fprintf(stderr,"Looking for %s\n",tokenbuf)); |
a0d0e21e | 1312 | if (Stat(tokenbuf,&statbuf) < 0) /* not there? */ |
79072805 LW |
1313 | continue; |
1314 | if (S_ISREG(statbuf.st_mode) | |
1315 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
1316 | xfound = tokenbuf; /* bingo! */ | |
1317 | break; | |
1318 | } | |
1319 | if (!xfailed) | |
a0d0e21e | 1320 | xfailed = savepv(tokenbuf); |
79072805 LW |
1321 | } |
1322 | if (!xfound) | |
463ee0b2 | 1323 | croak("Can't execute %s", xfailed ? xfailed : scriptname ); |
79072805 LW |
1324 | if (xfailed) |
1325 | Safefree(xfailed); | |
1326 | scriptname = xfound; | |
1327 | } | |
1328 | ||
a0d0e21e | 1329 | origfilename = savepv(e_fp ? "-e" : scriptname); |
79072805 LW |
1330 | curcop->cop_filegv = gv_fetchfile(origfilename); |
1331 | if (strEQ(origfilename,"-")) | |
1332 | scriptname = ""; | |
1333 | if (preprocess) { | |
1334 | char *cpp = CPPSTDIN; | |
1335 | ||
1336 | if (strEQ(cpp,"cppstdin")) | |
1337 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
1338 | else | |
1339 | sprintf(tokenbuf, "%s", cpp); | |
1340 | sv_catpv(sv,"-I"); | |
fed7345c | 1341 | sv_catpv(sv,PRIVLIB_EXP); |
79072805 LW |
1342 | #ifdef MSDOS |
1343 | (void)sprintf(buf, "\ | |
1344 | sed %s -e \"/^[^#]/b\" \ | |
1345 | -e \"/^#[ ]*include[ ]/b\" \ | |
1346 | -e \"/^#[ ]*define[ ]/b\" \ | |
1347 | -e \"/^#[ ]*if[ ]/b\" \ | |
1348 | -e \"/^#[ ]*ifdef[ ]/b\" \ | |
1349 | -e \"/^#[ ]*ifndef[ ]/b\" \ | |
1350 | -e \"/^#[ ]*else/b\" \ | |
1351 | -e \"/^#[ ]*elif[ ]/b\" \ | |
1352 | -e \"/^#[ ]*undef[ ]/b\" \ | |
1353 | -e \"/^#[ ]*endif/b\" \ | |
1354 | -e \"s/^#.*//\" \ | |
1355 | %s | %s -C %s %s", | |
1356 | (doextract ? "-e \"1,/^#/d\n\"" : ""), | |
1357 | #else | |
1358 | (void)sprintf(buf, "\ | |
1359 | %s %s -e '/^[^#]/b' \ | |
1360 | -e '/^#[ ]*include[ ]/b' \ | |
1361 | -e '/^#[ ]*define[ ]/b' \ | |
1362 | -e '/^#[ ]*if[ ]/b' \ | |
1363 | -e '/^#[ ]*ifdef[ ]/b' \ | |
1364 | -e '/^#[ ]*ifndef[ ]/b' \ | |
1365 | -e '/^#[ ]*else/b' \ | |
1366 | -e '/^#[ ]*elif[ ]/b' \ | |
1367 | -e '/^#[ ]*undef[ ]/b' \ | |
1368 | -e '/^#[ ]*endif/b' \ | |
1369 | -e 's/^[ ]*#.*//' \ | |
1370 | %s | %s -C %s %s", | |
1371 | #ifdef LOC_SED | |
1372 | LOC_SED, | |
1373 | #else | |
1374 | "sed", | |
1375 | #endif | |
1376 | (doextract ? "-e '1,/^#/d\n'" : ""), | |
1377 | #endif | |
463ee0b2 | 1378 | scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); |
79072805 LW |
1379 | doextract = FALSE; |
1380 | #ifdef IAMSUID /* actually, this is caught earlier */ | |
1381 | if (euid != uid && !euid) { /* if running suidperl */ | |
1382 | #ifdef HAS_SETEUID | |
1383 | (void)seteuid(uid); /* musn't stay setuid root */ | |
1384 | #else | |
1385 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1386 | (void)setreuid((Uid_t)-1, uid); |
1387 | #else | |
1388 | #ifdef HAS_SETRESUID | |
1389 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); | |
79072805 LW |
1390 | #else |
1391 | setuid(uid); | |
1392 | #endif | |
1393 | #endif | |
85e6fe83 | 1394 | #endif |
79072805 | 1395 | if (geteuid() != uid) |
463ee0b2 | 1396 | croak("Can't do seteuid!\n"); |
79072805 LW |
1397 | } |
1398 | #endif /* IAMSUID */ | |
1399 | rsfp = my_popen(buf,"r"); | |
1400 | } | |
1401 | else if (!*scriptname) { | |
463ee0b2 | 1402 | taint_not("program input from stdin"); |
79072805 LW |
1403 | rsfp = stdin; |
1404 | } | |
1405 | else | |
1406 | rsfp = fopen(scriptname,"r"); | |
45d8adaa | 1407 | if ((FILE*)rsfp == Nullfp) { |
13281fa4 | 1408 | #ifdef DOSUID |
a687059c | 1409 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
a0d0e21e | 1410 | if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
13281fa4 | 1411 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 1412 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1413 | execv(buf, origargv); /* try again */ |
463ee0b2 | 1414 | croak("Can't do setuid\n"); |
13281fa4 LW |
1415 | } |
1416 | #endif | |
1417 | #endif | |
463ee0b2 | 1418 | croak("Can't open perl script \"%s\": %s\n", |
2304df62 | 1419 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
13281fa4 | 1420 | } |
79072805 | 1421 | } |
8d063cd8 | 1422 | |
79072805 LW |
1423 | static void |
1424 | validate_suid(validarg) | |
1425 | char *validarg; | |
1426 | { | |
13281fa4 LW |
1427 | /* do we need to emulate setuid on scripts? */ |
1428 | ||
1429 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
1430 | * in the kernel because of a security problem. Merely defining DOSUID | |
1431 | * in perl will not fix that problem, but if you have disabled setuid | |
1432 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
1433 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
1434 | * root version must be called suidperl or sperlN.NNN. If regular perl |
1435 | * discovers that it has opened a setuid script, it calls suidperl with | |
1436 | * the same argv that it had. If suidperl finds that the script it has | |
1437 | * just opened is NOT setuid root, it sets the effective uid back to the | |
1438 | * uid. We don't just make perl setuid root because that loses the | |
1439 | * effective uid we had before invoking perl, if it was different from the | |
1440 | * uid. | |
13281fa4 LW |
1441 | * |
1442 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
1443 | * be defined in suidperl only. suidperl must be setuid root. The | |
1444 | * Configure script will set this up for you if you want it. | |
1445 | */ | |
a687059c | 1446 | |
13281fa4 | 1447 | #ifdef DOSUID |
a0d0e21e LW |
1448 | char *s; |
1449 | ||
1450 | if (Fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
463ee0b2 | 1451 | croak("Can't stat script \"%s\"",origfilename); |
13281fa4 | 1452 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
79072805 | 1453 | I32 len; |
13281fa4 | 1454 | |
a687059c | 1455 | #ifdef IAMSUID |
fe14fcc3 | 1456 | #ifndef HAS_SETREUID |
a687059c LW |
1457 | /* On this access check to make sure the directories are readable, |
1458 | * there is actually a small window that the user could use to make | |
1459 | * filename point to an accessible directory. So there is a faint | |
1460 | * chance that someone could execute a setuid script down in a | |
1461 | * non-accessible directory. I don't know what to do about that. | |
1462 | * But I don't think it's too important. The manual lies when | |
1463 | * it says access() is useful in setuid programs. | |
1464 | */ | |
463ee0b2 LW |
1465 | if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
1466 | croak("Permission denied"); | |
a687059c LW |
1467 | #else |
1468 | /* If we can swap euid and uid, then we can determine access rights | |
1469 | * with a simple stat of the file, and then compare device and | |
1470 | * inode to make sure we did stat() on the same file we opened. | |
1471 | * Then we just have to make sure he or she can execute it. | |
1472 | */ | |
1473 | { | |
1474 | struct stat tmpstatbuf; | |
1475 | ||
85e6fe83 LW |
1476 | if ( |
1477 | #ifdef HAS_SETREUID | |
1478 | setreuid(euid,uid) < 0 | |
a0d0e21e LW |
1479 | #else |
1480 | # if HAS_SETRESUID | |
85e6fe83 | 1481 | setresuid(euid,uid,(Uid_t)-1) < 0 |
a0d0e21e | 1482 | # endif |
85e6fe83 LW |
1483 | #endif |
1484 | || getuid() != euid || geteuid() != uid) | |
463ee0b2 | 1485 | croak("Can't swap uid and euid"); /* really paranoid */ |
a0d0e21e | 1486 | if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) |
463ee0b2 | 1487 | croak("Permission denied"); /* testing full pathname here */ |
a687059c LW |
1488 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
1489 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
1490 | (void)fclose(rsfp); | |
79072805 | 1491 | if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ |
a687059c LW |
1492 | fprintf(rsfp, |
1493 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
1494 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
1495 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
1496 | statbuf.st_dev, statbuf.st_ino, | |
463ee0b2 | 1497 | SvPVX(GvSV(curcop->cop_filegv)), |
20188a90 | 1498 | statbuf.st_uid, statbuf.st_gid); |
79072805 | 1499 | (void)my_pclose(rsfp); |
a687059c | 1500 | } |
463ee0b2 | 1501 | croak("Permission denied\n"); |
a687059c | 1502 | } |
85e6fe83 LW |
1503 | if ( |
1504 | #ifdef HAS_SETREUID | |
1505 | setreuid(uid,euid) < 0 | |
a0d0e21e LW |
1506 | #else |
1507 | # if defined(HAS_SETRESUID) | |
85e6fe83 | 1508 | setresuid(uid,euid,(Uid_t)-1) < 0 |
a0d0e21e | 1509 | # endif |
85e6fe83 LW |
1510 | #endif |
1511 | || getuid() != uid || geteuid() != euid) | |
463ee0b2 | 1512 | croak("Can't reswap uid and euid"); |
27e2fb84 | 1513 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
463ee0b2 | 1514 | croak("Permission denied\n"); |
a687059c | 1515 | } |
fe14fcc3 | 1516 | #endif /* HAS_SETREUID */ |
a687059c LW |
1517 | #endif /* IAMSUID */ |
1518 | ||
27e2fb84 | 1519 | if (!S_ISREG(statbuf.st_mode)) |
463ee0b2 | 1520 | croak("Permission denied"); |
27e2fb84 | 1521 | if (statbuf.st_mode & S_IWOTH) |
463ee0b2 | 1522 | croak("Setuid/gid script is writable by world"); |
13281fa4 | 1523 | doswitches = FALSE; /* -s is insecure in suid */ |
79072805 | 1524 | curcop->cop_line++; |
13281fa4 LW |
1525 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
1526 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
463ee0b2 | 1527 | croak("No #! line"); |
663a0e37 LW |
1528 | s = tokenbuf+2; |
1529 | if (*s == ' ') s++; | |
45d8adaa | 1530 | while (!isSPACE(*s)) s++; |
27e2fb84 | 1531 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
463ee0b2 | 1532 | croak("Not a perl script"); |
a687059c | 1533 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
1534 | /* |
1535 | * #! arg must be what we saw above. They can invoke it by | |
1536 | * mentioning suidperl explicitly, but they may not add any strange | |
1537 | * arguments beyond what #! says if they do invoke suidperl that way. | |
1538 | */ | |
1539 | len = strlen(validarg); | |
1540 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 1541 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
463ee0b2 | 1542 | croak("Args must match #! line"); |
a687059c LW |
1543 | |
1544 | #ifndef IAMSUID | |
1545 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
1546 | euid == statbuf.st_uid) | |
1547 | if (!do_undump) | |
463ee0b2 | 1548 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1549 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1550 | #endif /* IAMSUID */ | |
13281fa4 LW |
1551 | |
1552 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 1553 | (void)fclose(rsfp); |
13281fa4 | 1554 | #ifndef IAMSUID |
27e2fb84 | 1555 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1556 | execv(buf, origargv); /* try again */ |
13281fa4 | 1557 | #endif |
463ee0b2 | 1558 | croak("Can't do setuid\n"); |
13281fa4 LW |
1559 | } |
1560 | ||
83025b21 | 1561 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
fe14fcc3 | 1562 | #ifdef HAS_SETEGID |
a687059c LW |
1563 | (void)setegid(statbuf.st_gid); |
1564 | #else | |
fe14fcc3 | 1565 | #ifdef HAS_SETREGID |
85e6fe83 LW |
1566 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
1567 | #else | |
1568 | #ifdef HAS_SETRESGID | |
1569 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); | |
a687059c LW |
1570 | #else |
1571 | setgid(statbuf.st_gid); | |
1572 | #endif | |
1573 | #endif | |
85e6fe83 | 1574 | #endif |
83025b21 | 1575 | if (getegid() != statbuf.st_gid) |
463ee0b2 | 1576 | croak("Can't do setegid!\n"); |
83025b21 | 1577 | } |
a687059c LW |
1578 | if (statbuf.st_mode & S_ISUID) { |
1579 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 1580 | #ifdef HAS_SETEUID |
a687059c LW |
1581 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
1582 | #else | |
fe14fcc3 | 1583 | #ifdef HAS_SETREUID |
85e6fe83 LW |
1584 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
1585 | #else | |
1586 | #ifdef HAS_SETRESUID | |
1587 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); | |
a687059c LW |
1588 | #else |
1589 | setuid(statbuf.st_uid); | |
1590 | #endif | |
1591 | #endif | |
85e6fe83 | 1592 | #endif |
83025b21 | 1593 | if (geteuid() != statbuf.st_uid) |
463ee0b2 | 1594 | croak("Can't do seteuid!\n"); |
a687059c | 1595 | } |
83025b21 | 1596 | else if (uid) { /* oops, mustn't run as root */ |
fe14fcc3 | 1597 | #ifdef HAS_SETEUID |
85e6fe83 | 1598 | (void)seteuid((Uid_t)uid); |
a687059c | 1599 | #else |
fe14fcc3 | 1600 | #ifdef HAS_SETREUID |
85e6fe83 | 1601 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
a687059c | 1602 | #else |
85e6fe83 LW |
1603 | #ifdef HAS_SETRESUID |
1604 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); | |
1605 | #else | |
1606 | setuid((Uid_t)uid); | |
1607 | #endif | |
a687059c LW |
1608 | #endif |
1609 | #endif | |
83025b21 | 1610 | if (geteuid() != uid) |
463ee0b2 | 1611 | croak("Can't do seteuid!\n"); |
83025b21 | 1612 | } |
748a9306 | 1613 | init_ids(); |
27e2fb84 | 1614 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
463ee0b2 | 1615 | croak("Permission denied\n"); /* they can't do this */ |
13281fa4 LW |
1616 | } |
1617 | #ifdef IAMSUID | |
1618 | else if (preprocess) | |
463ee0b2 | 1619 | croak("-P not allowed for setuid/setgid script\n"); |
13281fa4 | 1620 | else |
463ee0b2 | 1621 | croak("Script is not setuid/setgid in suidperl\n"); |
13281fa4 | 1622 | #endif /* IAMSUID */ |
a687059c | 1623 | #else /* !DOSUID */ |
a687059c LW |
1624 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
1625 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
a0d0e21e | 1626 | Fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
a687059c LW |
1627 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
1628 | || | |
1629 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
1630 | ) | |
1631 | if (!do_undump) | |
463ee0b2 | 1632 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1633 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1634 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
1635 | /* not set-id, must be wrapped */ | |
a687059c | 1636 | } |
13281fa4 | 1637 | #endif /* DOSUID */ |
79072805 | 1638 | } |
13281fa4 | 1639 | |
79072805 LW |
1640 | static void |
1641 | find_beginning() | |
1642 | { | |
79072805 | 1643 | register char *s; |
33b78306 LW |
1644 | |
1645 | /* skip forward in input to the real script? */ | |
1646 | ||
463ee0b2 | 1647 | taint_not("-x"); |
33b78306 | 1648 | while (doextract) { |
79072805 | 1649 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
463ee0b2 | 1650 | croak("No Perl script found in input\n"); |
33b78306 LW |
1651 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { |
1652 | ungetc('\n',rsfp); /* to keep line count right */ | |
1653 | doextract = FALSE; | |
1654 | if (s = instr(s,"perl -")) { | |
1655 | s += 6; | |
45d8adaa | 1656 | /*SUPPRESS 530*/ |
33b78306 LW |
1657 | while (s = moreswitches(s)) ; |
1658 | } | |
79072805 | 1659 | if (cddir && chdir(cddir) < 0) |
463ee0b2 | 1660 | croak("Can't chdir to %s",cddir); |
83025b21 LW |
1661 | } |
1662 | } | |
1663 | } | |
1664 | ||
79072805 | 1665 | static void |
748a9306 | 1666 | init_ids() |
352d5a3a | 1667 | { |
748a9306 LW |
1668 | uid = (int)getuid(); |
1669 | euid = (int)geteuid(); | |
1670 | gid = (int)getgid(); | |
1671 | egid = (int)getegid(); | |
1672 | #ifdef VMS | |
1673 | uid |= gid << 16; | |
1674 | euid |= egid << 16; | |
1675 | #endif | |
4633a7c4 | 1676 | tainting |= (uid && (euid != uid || egid != gid)); |
748a9306 | 1677 | } |
79072805 | 1678 | |
748a9306 LW |
1679 | static void |
1680 | init_debugger() | |
1681 | { | |
79072805 | 1682 | curstash = debstash; |
748a9306 | 1683 | dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
79072805 | 1684 | AvREAL_off(dbargs); |
a0d0e21e LW |
1685 | DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
1686 | DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); | |
748a9306 LW |
1687 | DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
1688 | DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); | |
c07a80fd | 1689 | sv_setiv(DBsingle, 0); |
748a9306 | 1690 | DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); |
c07a80fd | 1691 | sv_setiv(DBtrace, 0); |
748a9306 | 1692 | DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); |
c07a80fd | 1693 | sv_setiv(DBsignal, 0); |
79072805 | 1694 | curstash = defstash; |
352d5a3a LW |
1695 | } |
1696 | ||
79072805 | 1697 | static void |
8990e307 | 1698 | init_stacks() |
79072805 LW |
1699 | { |
1700 | stack = newAV(); | |
1701 | mainstack = stack; /* remember in case we switch stacks */ | |
1702 | AvREAL_off(stack); /* not a real array */ | |
a0d0e21e | 1703 | av_extend(stack,127); |
79072805 LW |
1704 | |
1705 | stack_base = AvARRAY(stack); | |
1706 | stack_sp = stack_base; | |
8990e307 | 1707 | stack_max = stack_base + 127; |
79072805 | 1708 | |
a0d0e21e | 1709 | New(54,markstack,64,I32); |
79072805 LW |
1710 | markstack_ptr = markstack; |
1711 | markstack_max = markstack + 64; | |
1712 | ||
a0d0e21e | 1713 | New(54,scopestack,32,I32); |
79072805 LW |
1714 | scopestack_ix = 0; |
1715 | scopestack_max = 32; | |
1716 | ||
1717 | New(54,savestack,128,ANY); | |
1718 | savestack_ix = 0; | |
1719 | savestack_max = 128; | |
1720 | ||
1721 | New(54,retstack,16,OP*); | |
1722 | retstack_ix = 0; | |
1723 | retstack_max = 16; | |
8d063cd8 | 1724 | |
79072805 | 1725 | New(50,cxstack,128,CONTEXT); |
8990e307 LW |
1726 | cxstack_ix = -1; |
1727 | cxstack_max = 128; | |
1728 | ||
1729 | New(50,tmps_stack,128,SV*); | |
1730 | tmps_ix = -1; | |
1731 | tmps_max = 128; | |
1732 | ||
79072805 LW |
1733 | DEBUG( { |
1734 | New(51,debname,128,char); | |
1735 | New(52,debdelim,128,char); | |
1736 | } ) | |
378cc40b | 1737 | } |
33b78306 | 1738 | |
a0d0e21e | 1739 | static FILE *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
79072805 | 1740 | static void |
8990e307 LW |
1741 | init_lexer() |
1742 | { | |
a0d0e21e | 1743 | tmpfp = rsfp; |
8990e307 LW |
1744 | |
1745 | lex_start(linestr); | |
1746 | rsfp = tmpfp; | |
1747 | subname = newSVpv("main",4); | |
1748 | } | |
1749 | ||
1750 | static void | |
79072805 | 1751 | init_predump_symbols() |
45d8adaa | 1752 | { |
93a17b20 | 1753 | GV *tmpgv; |
a0d0e21e | 1754 | GV *othergv; |
79072805 | 1755 | |
85e6fe83 | 1756 | sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); |
79072805 | 1757 | |
85e6fe83 | 1758 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
79072805 | 1759 | SvMULTI_on(stdingv); |
a0d0e21e | 1760 | IoIFP(GvIOp(stdingv)) = stdin; |
adbc6bb1 | 1761 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
a0d0e21e | 1762 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); |
79072805 LW |
1763 | SvMULTI_on(tmpgv); |
1764 | ||
85e6fe83 | 1765 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
79072805 | 1766 | SvMULTI_on(tmpgv); |
a0d0e21e | 1767 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = stdout; |
4633a7c4 | 1768 | setdefout(tmpgv); |
adbc6bb1 | 1769 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
a0d0e21e | 1770 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); |
79072805 LW |
1771 | SvMULTI_on(tmpgv); |
1772 | ||
a0d0e21e LW |
1773 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
1774 | SvMULTI_on(othergv); | |
1775 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = stderr; | |
adbc6bb1 | 1776 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
a0d0e21e | 1777 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
79072805 | 1778 | SvMULTI_on(tmpgv); |
79072805 LW |
1779 | |
1780 | statname = NEWSV(66,0); /* last filename we did stat on */ | |
79072805 | 1781 | } |
33b78306 | 1782 | |
79072805 LW |
1783 | static void |
1784 | init_postdump_symbols(argc,argv,env) | |
1785 | register int argc; | |
1786 | register char **argv; | |
1787 | register char **env; | |
33b78306 | 1788 | { |
79072805 LW |
1789 | char *s; |
1790 | SV *sv; | |
1791 | GV* tmpgv; | |
fe14fcc3 | 1792 | |
79072805 LW |
1793 | argc--,argv++; /* skip name of script */ |
1794 | if (doswitches) { | |
1795 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
1796 | if (!argv[0][1]) | |
1797 | break; | |
1798 | if (argv[0][1] == '-') { | |
1799 | argc--,argv++; | |
1800 | break; | |
1801 | } | |
93a17b20 | 1802 | if (s = strchr(argv[0], '=')) { |
79072805 | 1803 | *s++ = '\0'; |
85e6fe83 | 1804 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
79072805 LW |
1805 | } |
1806 | else | |
85e6fe83 | 1807 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
fe14fcc3 | 1808 | } |
79072805 LW |
1809 | } |
1810 | toptarget = NEWSV(0,0); | |
1811 | sv_upgrade(toptarget, SVt_PVFM); | |
1812 | sv_setpvn(toptarget, "", 0); | |
748a9306 | 1813 | bodytarget = NEWSV(0,0); |
79072805 LW |
1814 | sv_upgrade(bodytarget, SVt_PVFM); |
1815 | sv_setpvn(bodytarget, "", 0); | |
1816 | formtarget = bodytarget; | |
1817 | ||
79072805 | 1818 | tainted = 1; |
85e6fe83 | 1819 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
79072805 LW |
1820 | sv_setpv(GvSV(tmpgv),origfilename); |
1821 | magicname("0", "0", 1); | |
1822 | } | |
85e6fe83 | 1823 | if (tmpgv = gv_fetchpv("\024",TRUE, SVt_PV)) |
79072805 | 1824 | time(&basetime); |
85e6fe83 | 1825 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
79072805 | 1826 | sv_setpv(GvSV(tmpgv),origargv[0]); |
85e6fe83 | 1827 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
79072805 LW |
1828 | SvMULTI_on(argvgv); |
1829 | (void)gv_AVadd(argvgv); | |
1830 | av_clear(GvAVn(argvgv)); | |
1831 | for (; argc > 0; argc--,argv++) { | |
a0d0e21e | 1832 | av_push(GvAVn(argvgv),newSVpv(argv[0],0)); |
79072805 LW |
1833 | } |
1834 | } | |
85e6fe83 | 1835 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
79072805 LW |
1836 | HV *hv; |
1837 | SvMULTI_on(envgv); | |
1838 | hv = GvHVn(envgv); | |
463ee0b2 | 1839 | hv_clear(hv); |
a0d0e21e | 1840 | #ifndef VMS /* VMS doesn't have environ array */ |
4633a7c4 LW |
1841 | /* Note that if the supplied env parameter is actually a copy |
1842 | of the global environ then it may now point to free'd memory | |
1843 | if the environment has been modified since. To avoid this | |
1844 | problem we treat env==NULL as meaning 'use the default' | |
1845 | */ | |
1846 | if (!env) | |
1847 | env = environ; | |
8990e307 | 1848 | if (env != environ) { |
79072805 | 1849 | environ[0] = Nullch; |
8990e307 LW |
1850 | hv_magic(hv, envgv, 'E'); |
1851 | } | |
79072805 | 1852 | for (; *env; env++) { |
93a17b20 | 1853 | if (!(s = strchr(*env,'='))) |
79072805 LW |
1854 | continue; |
1855 | *s++ = '\0'; | |
1856 | sv = newSVpv(s--,0); | |
85e6fe83 | 1857 | sv_magic(sv, sv, 'e', *env, s - *env); |
79072805 LW |
1858 | (void)hv_store(hv, *env, s - *env, sv, 0); |
1859 | *s = '='; | |
fe14fcc3 | 1860 | } |
4550b24a | 1861 | #endif |
1862 | #ifdef DYNAMIC_ENV_FETCH | |
1863 | HvNAME(hv) = savepv(ENV_HV_NAME); | |
1864 | #endif | |
f511e57f | 1865 | hv_magic(hv, envgv, 'E'); |
79072805 | 1866 | } |
79072805 | 1867 | tainted = 0; |
85e6fe83 | 1868 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 LW |
1869 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
1870 | ||
33b78306 | 1871 | } |
34de22dd | 1872 | |
79072805 LW |
1873 | static void |
1874 | init_perllib() | |
34de22dd | 1875 | { |
85e6fe83 LW |
1876 | char *s; |
1877 | if (!tainting) { | |
1878 | s = getenv("PERL5LIB"); | |
1879 | if (s) | |
1880 | incpush(s); | |
1881 | else | |
1882 | incpush(getenv("PERLLIB")); | |
1883 | } | |
34de22dd | 1884 | |
4633a7c4 LW |
1885 | #ifdef APPLLIB_EXP |
1886 | incpush(APPLLIB_EXP); | |
16d20bd9 | 1887 | #endif |
4633a7c4 | 1888 | |
fed7345c AD |
1889 | #ifdef ARCHLIB_EXP |
1890 | incpush(ARCHLIB_EXP); | |
a0d0e21e | 1891 | #endif |
fed7345c AD |
1892 | #ifndef PRIVLIB_EXP |
1893 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" | |
34de22dd | 1894 | #endif |
fed7345c | 1895 | incpush(PRIVLIB_EXP); |
4633a7c4 LW |
1896 | |
1897 | #ifdef SITEARCH_EXP | |
1898 | incpush(SITEARCH_EXP); | |
1899 | #endif | |
1900 | #ifdef SITELIB_EXP | |
1901 | incpush(SITELIB_EXP); | |
1902 | #endif | |
1903 | #ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ | |
1904 | incpush(OLDARCHLIB_EXP); | |
1905 | #endif | |
a0d0e21e | 1906 | |
4633a7c4 LW |
1907 | if (!tainting) |
1908 | incpush("."); | |
34de22dd | 1909 | } |
93a17b20 LW |
1910 | |
1911 | void | |
1912 | calllist(list) | |
1913 | AV* list; | |
1914 | { | |
93a17b20 | 1915 | jmp_buf oldtop; |
a0d0e21e LW |
1916 | STRLEN len; |
1917 | line_t oldline = curcop->cop_line; | |
93a17b20 | 1918 | |
93a17b20 LW |
1919 | Copy(top_env, oldtop, 1, jmp_buf); |
1920 | ||
8990e307 LW |
1921 | while (AvFILL(list) >= 0) { |
1922 | CV *cv = (CV*)av_shift(list); | |
93a17b20 | 1923 | |
8990e307 | 1924 | SAVEFREESV(cv); |
a0d0e21e | 1925 | |
85e6fe83 | 1926 | switch (setjmp(top_env)) { |
748a9306 | 1927 | case 0: { |
4633a7c4 | 1928 | SV* atsv = GvSV(errgv); |
748a9306 LW |
1929 | PUSHMARK(stack_sp); |
1930 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); | |
1931 | (void)SvPV(atsv, len); | |
1932 | if (len) { | |
1933 | Copy(oldtop, top_env, 1, jmp_buf); | |
1934 | curcop = &compiling; | |
1935 | curcop->cop_line = oldline; | |
1936 | if (list == beginav) | |
1937 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); | |
1938 | else | |
1939 | sv_catpv(atsv, "END failed--cleanup aborted"); | |
1940 | croak("%s", SvPVX(atsv)); | |
1941 | } | |
a0d0e21e | 1942 | } |
85e6fe83 LW |
1943 | break; |
1944 | case 1: | |
748a9306 | 1945 | #ifdef VMS |
85e6fe83 | 1946 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
1947 | #else |
1948 | statusvalue = 1; | |
1949 | #endif | |
85e6fe83 LW |
1950 | /* FALL THROUGH */ |
1951 | case 2: | |
1952 | /* my_exit() was called */ | |
1953 | curstash = defstash; | |
1954 | if (endav) | |
1955 | calllist(endav); | |
a0d0e21e LW |
1956 | FREETMPS; |
1957 | Copy(oldtop, top_env, 1, jmp_buf); | |
1958 | curcop = &compiling; | |
1959 | curcop->cop_line = oldline; | |
85e6fe83 LW |
1960 | if (statusvalue) { |
1961 | if (list == beginav) | |
a0d0e21e | 1962 | croak("BEGIN failed--compilation aborted"); |
85e6fe83 | 1963 | else |
a0d0e21e | 1964 | croak("END failed--cleanup aborted"); |
85e6fe83 | 1965 | } |
85e6fe83 LW |
1966 | my_exit(statusvalue); |
1967 | /* NOTREACHED */ | |
1968 | return; | |
1969 | case 3: | |
1970 | if (!restartop) { | |
1971 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 1972 | FREETMPS; |
85e6fe83 LW |
1973 | break; |
1974 | } | |
a0d0e21e LW |
1975 | Copy(oldtop, top_env, 1, jmp_buf); |
1976 | curcop = &compiling; | |
1977 | curcop->cop_line = oldline; | |
1978 | longjmp(top_env, 3); | |
8990e307 | 1979 | } |
93a17b20 LW |
1980 | } |
1981 | ||
1982 | Copy(oldtop, top_env, 1, jmp_buf); | |
1983 | } | |
1984 |