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 | ||
87 | #ifdef MSDOS | |
88 | /* | |
89 | * There is no way we can refer to them from Perl so close them to save | |
90 | * space. The other alternative would be to provide STDAUX and STDPRN | |
91 | * filehandles. | |
92 | */ | |
93 | (void)fclose(stdaux); | |
94 | (void)fclose(stdprn); | |
95 | #endif | |
96 | } | |
97 | ||
8990e307 | 98 | #ifdef MULTIPLICITY |
79072805 | 99 | chopset = " \n-"; |
463ee0b2 | 100 | copline = NOLINE; |
79072805 | 101 | curcop = &compiling; |
1a30305b | 102 | dbargs = 0; |
79072805 LW |
103 | dlmax = 128; |
104 | laststatval = -1; | |
105 | laststype = OP_STAT; | |
106 | maxscream = -1; | |
107 | maxsysfd = MAXSYSFD; | |
108 | nrs = "\n"; | |
109 | nrschar = '\n'; | |
110 | nrslen = 1; | |
111 | rs = "\n"; | |
112 | rschar = '\n'; | |
113 | rsfp = Nullfp; | |
114 | rslen = 1; | |
463ee0b2 | 115 | statname = Nullsv; |
79072805 | 116 | tmps_floor = -1; |
79072805 LW |
117 | #endif |
118 | ||
748a9306 | 119 | init_ids(); |
a0d0e21e | 120 | sprintf(patchlevel, "%5.3f", 5.0 + (PATCHLEVEL / 1000.0)); |
79072805 LW |
121 | |
122 | fdpid = newAV(); /* for remembering popen pids by fd */ | |
463ee0b2 | 123 | pidstatus = newHV();/* for remembering status of dead pids */ |
8990e307 LW |
124 | |
125 | init_stacks(); | |
126 | ENTER; | |
79072805 LW |
127 | } |
128 | ||
129 | void | |
748a9306 | 130 | perl_destruct(sv_interp) |
93a17b20 | 131 | register PerlInterpreter *sv_interp; |
79072805 | 132 | { |
748a9306 | 133 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
8990e307 | 134 | I32 last_sv_count; |
a0d0e21e | 135 | HV *hv; |
8990e307 | 136 | |
79072805 LW |
137 | if (!(curinterp = sv_interp)) |
138 | return; | |
748a9306 LW |
139 | |
140 | destruct_level = perl_destruct_level; | |
4633a7c4 LW |
141 | #ifdef DEBUGGING |
142 | { | |
143 | char *s; | |
144 | if (s = getenv("PERL_DESTRUCT_LEVEL")) | |
145 | destruct_level = atoi(s); | |
146 | } | |
147 | #endif | |
148 | ||
8990e307 | 149 | LEAVE; |
a0d0e21e LW |
150 | FREETMPS; |
151 | ||
152 | if (sv_objcount) { | |
153 | /* We must account for everything. First the syntax tree. */ | |
154 | if (main_root) { | |
155 | curpad = AvARRAY(comppad); | |
156 | op_free(main_root); | |
157 | main_root = 0; | |
158 | } | |
159 | } | |
160 | if (sv_objcount) { | |
161 | /* | |
162 | * Try to destruct global references. We do this first so that the | |
163 | * destructors and destructees still exist. Some sv's might remain. | |
164 | * Non-referenced objects are on their own. | |
165 | */ | |
166 | ||
167 | dirty = TRUE; | |
168 | sv_clean_objs(); | |
8990e307 LW |
169 | } |
170 | ||
a0d0e21e | 171 | if (destruct_level == 0){ |
8990e307 | 172 | |
a0d0e21e LW |
173 | DEBUG_P(debprofdump()); |
174 | ||
175 | /* The exit() function will do everything that needs doing. */ | |
176 | return; | |
177 | } | |
178 | ||
179 | /* Prepare to destruct main symbol table. */ | |
180 | hv = defstash; | |
85e6fe83 | 181 | defstash = 0; |
a0d0e21e LW |
182 | SvREFCNT_dec(hv); |
183 | ||
184 | FREETMPS; | |
185 | if (destruct_level >= 2) { | |
186 | if (scopestack_ix != 0) | |
187 | warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); | |
188 | if (savestack_ix != 0) | |
189 | warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); | |
190 | if (tmps_floor != -1) | |
191 | warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); | |
192 | if (cxstack_ix != -1) | |
193 | warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); | |
194 | } | |
8990e307 LW |
195 | |
196 | /* Now absolutely destruct everything, somehow or other, loops or no. */ | |
8990e307 LW |
197 | last_sv_count = 0; |
198 | while (sv_count != 0 && sv_count != last_sv_count) { | |
199 | last_sv_count = sv_count; | |
200 | sv_clean_all(); | |
201 | } | |
202 | if (sv_count != 0) | |
203 | warn("Scalars leaked: %d\n", sv_count); | |
4633a7c4 | 204 | sv_free_arenas(); |
a0d0e21e LW |
205 | |
206 | DEBUG_P(debprofdump()); | |
79072805 LW |
207 | } |
208 | ||
209 | void | |
210 | perl_free(sv_interp) | |
93a17b20 | 211 | PerlInterpreter *sv_interp; |
79072805 LW |
212 | { |
213 | if (!(curinterp = sv_interp)) | |
214 | return; | |
215 | Safefree(sv_interp); | |
216 | } | |
ecfc5424 | 217 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
a0d0e21e LW |
218 | char *getenv _((char *)); /* Usually in <stdlib.h> */ |
219 | #endif | |
79072805 LW |
220 | |
221 | int | |
a0d0e21e | 222 | perl_parse(sv_interp, xsinit, argc, argv, env) |
93a17b20 | 223 | PerlInterpreter *sv_interp; |
a0d0e21e LW |
224 | void (*xsinit)_((void)); |
225 | int argc; | |
226 | char **argv; | |
79072805 | 227 | char **env; |
8d063cd8 | 228 | { |
79072805 | 229 | register SV *sv; |
8d063cd8 | 230 | register char *s; |
1a30305b | 231 | char *scriptname = NULL; |
a0d0e21e | 232 | VOL bool dosearch = FALSE; |
13281fa4 | 233 | char *validarg = ""; |
748a9306 | 234 | AV* comppadlist; |
8d063cd8 | 235 | |
a687059c LW |
236 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
237 | #ifdef IAMSUID | |
238 | #undef IAMSUID | |
463ee0b2 | 239 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
a687059c LW |
240 | setuid perl scripts securely.\n"); |
241 | #endif | |
242 | #endif | |
243 | ||
79072805 LW |
244 | if (!(curinterp = sv_interp)) |
245 | return 255; | |
246 | ||
ac58e20f LW |
247 | origargv = argv; |
248 | origargc = argc; | |
a0d0e21e | 249 | #ifndef VMS /* VMS doesn't have environ array */ |
fe14fcc3 | 250 | origenviron = environ; |
a0d0e21e LW |
251 | #endif |
252 | ||
253 | if (do_undump) { | |
254 | ||
255 | /* Come here if running an undumped a.out. */ | |
256 | ||
257 | origfilename = savepv(argv[0]); | |
258 | do_undump = FALSE; | |
259 | cxstack_ix = -1; /* start label stack again */ | |
748a9306 | 260 | init_ids(); |
a0d0e21e LW |
261 | init_postdump_symbols(argc,argv,env); |
262 | return 0; | |
263 | } | |
264 | ||
265 | if (main_root) | |
266 | op_free(main_root); | |
267 | main_root = 0; | |
79072805 LW |
268 | |
269 | switch (setjmp(top_env)) { | |
270 | case 1: | |
748a9306 | 271 | #ifdef VMS |
79072805 | 272 | statusvalue = 255; |
748a9306 LW |
273 | #else |
274 | statusvalue = 1; | |
275 | #endif | |
79072805 | 276 | case 2: |
8990e307 LW |
277 | curstash = defstash; |
278 | if (endav) | |
279 | calllist(endav); | |
79072805 LW |
280 | return(statusvalue); /* my_exit() was called */ |
281 | case 3: | |
282 | fprintf(stderr, "panic: top_env\n"); | |
8990e307 | 283 | return 1; |
79072805 LW |
284 | } |
285 | ||
79072805 LW |
286 | sv_setpvn(linestr,"",0); |
287 | sv = newSVpv("",0); /* first used for -I flags */ | |
8990e307 | 288 | SAVEFREESV(sv); |
79072805 | 289 | init_main_stash(); |
33b78306 | 290 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
291 | if (argv[0][0] != '-' || !argv[0][1]) |
292 | break; | |
13281fa4 LW |
293 | #ifdef DOSUID |
294 | if (*validarg) | |
295 | validarg = " PHOOEY "; | |
296 | else | |
297 | validarg = argv[0]; | |
298 | #endif | |
299 | s = argv[0]+1; | |
8d063cd8 | 300 | reswitch: |
13281fa4 | 301 | switch (*s) { |
27e2fb84 | 302 | case '0': |
2304df62 | 303 | case 'F': |
378cc40b | 304 | case 'a': |
33b78306 | 305 | case 'c': |
a687059c | 306 | case 'd': |
8d063cd8 | 307 | case 'D': |
4633a7c4 | 308 | case 'h': |
33b78306 | 309 | case 'i': |
fe14fcc3 | 310 | case 'l': |
1a30305b | 311 | case 'M': |
312 | case 'm': | |
33b78306 LW |
313 | case 'n': |
314 | case 'p': | |
79072805 | 315 | case 's': |
463ee0b2 | 316 | case 'T': |
33b78306 LW |
317 | case 'u': |
318 | case 'U': | |
319 | case 'v': | |
320 | case 'w': | |
321 | if (s = moreswitches(s)) | |
322 | goto reswitch; | |
8d063cd8 | 323 | break; |
33b78306 | 324 | |
8d063cd8 | 325 | case 'e': |
a687059c | 326 | if (euid != uid || egid != gid) |
463ee0b2 | 327 | croak("No -e allowed in setuid scripts"); |
8d063cd8 | 328 | if (!e_fp) { |
a0d0e21e | 329 | e_tmpname = savepv(TMPPATH); |
a687059c | 330 | (void)mktemp(e_tmpname); |
83025b21 | 331 | if (!*e_tmpname) |
463ee0b2 | 332 | croak("Can't mktemp()"); |
8d063cd8 | 333 | e_fp = fopen(e_tmpname,"w"); |
33b78306 | 334 | if (!e_fp) |
463ee0b2 | 335 | croak("Cannot open temporary file"); |
8d063cd8 | 336 | } |
33b78306 | 337 | if (argv[1]) { |
8d063cd8 | 338 | fputs(argv[1],e_fp); |
33b78306 LW |
339 | argc--,argv++; |
340 | } | |
a687059c | 341 | (void)putc('\n', e_fp); |
8d063cd8 LW |
342 | break; |
343 | case 'I': | |
463ee0b2 | 344 | taint_not("-I"); |
79072805 LW |
345 | sv_catpv(sv,"-"); |
346 | sv_catpv(sv,s); | |
347 | sv_catpv(sv," "); | |
a687059c | 348 | if (*++s) { |
a0d0e21e | 349 | av_push(GvAVn(incgv),newSVpv(s,0)); |
378cc40b | 350 | } |
33b78306 | 351 | else if (argv[1]) { |
a0d0e21e | 352 | av_push(GvAVn(incgv),newSVpv(argv[1],0)); |
79072805 | 353 | sv_catpv(sv,argv[1]); |
8d063cd8 | 354 | argc--,argv++; |
79072805 | 355 | sv_catpv(sv," "); |
8d063cd8 LW |
356 | } |
357 | break; | |
8d063cd8 | 358 | case 'P': |
463ee0b2 | 359 | taint_not("-P"); |
8d063cd8 | 360 | preprocess = TRUE; |
13281fa4 | 361 | s++; |
8d063cd8 | 362 | goto reswitch; |
378cc40b | 363 | case 'S': |
463ee0b2 | 364 | taint_not("-S"); |
378cc40b | 365 | dosearch = TRUE; |
13281fa4 | 366 | s++; |
378cc40b | 367 | goto reswitch; |
1a30305b | 368 | case 'V': |
369 | if (!preambleav) | |
370 | preambleav = newAV(); | |
371 | av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0)); | |
372 | if (*++s != ':') { | |
373 | Sv = newSVpv("print myconfig(),'@INC: '.\"@INC\\n\"",0); | |
374 | } | |
375 | else { | |
376 | Sv = newSVpv("config_vars(qw(",0); | |
377 | sv_catpv(Sv, ++s); | |
378 | sv_catpv(Sv, "))"); | |
379 | s += strlen(s); | |
380 | } | |
381 | av_push(preambleav, Sv); | |
382 | scriptname = "/dev/null"; /* don't look for script or read stdin */ | |
383 | goto reswitch; | |
33b78306 LW |
384 | case 'x': |
385 | doextract = TRUE; | |
13281fa4 | 386 | s++; |
33b78306 | 387 | if (*s) |
a0d0e21e | 388 | cddir = savepv(s); |
33b78306 | 389 | break; |
8d063cd8 LW |
390 | case '-': |
391 | argc--,argv++; | |
392 | goto switch_end; | |
393 | case 0: | |
394 | break; | |
395 | default: | |
463ee0b2 | 396 | croak("Unrecognized switch: -%s",s); |
8d063cd8 LW |
397 | } |
398 | } | |
399 | switch_end: | |
1a30305b | 400 | if (!scriptname) |
401 | scriptname = argv[0]; | |
8d063cd8 | 402 | if (e_fp) { |
83025b21 | 403 | if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp)) |
2304df62 | 404 | croak("Can't write to temp file for -e: %s", Strerror(errno)); |
8d063cd8 | 405 | argc++,argv--; |
45d8adaa | 406 | scriptname = e_tmpname; |
8d063cd8 | 407 | } |
79072805 LW |
408 | else if (scriptname == Nullch) { |
409 | #ifdef MSDOS | |
410 | if ( isatty(fileno(stdin)) ) | |
411 | moreswitches("v"); | |
fe14fcc3 | 412 | #endif |
79072805 LW |
413 | scriptname = "-"; |
414 | } | |
fe14fcc3 | 415 | |
79072805 | 416 | init_perllib(); |
8d063cd8 | 417 | |
79072805 | 418 | open_script(scriptname,dosearch,sv); |
8d063cd8 | 419 | |
79072805 | 420 | validate_suid(validarg); |
378cc40b | 421 | |
79072805 LW |
422 | if (doextract) |
423 | find_beginning(); | |
424 | ||
748a9306 LW |
425 | compcv = (CV*)NEWSV(1104,0); |
426 | sv_upgrade((SV *)compcv, SVt_PVCV); | |
427 | ||
79072805 LW |
428 | pad = newAV(); |
429 | comppad = pad; | |
430 | av_push(comppad, Nullsv); | |
431 | curpad = AvARRAY(comppad); | |
93a17b20 | 432 | padname = newAV(); |
8990e307 LW |
433 | comppad_name = padname; |
434 | comppad_name_fill = 0; | |
435 | min_intro_pending = 0; | |
79072805 LW |
436 | padix = 0; |
437 | ||
748a9306 LW |
438 | comppadlist = newAV(); |
439 | AvREAL_off(comppadlist); | |
8e07c86e AD |
440 | av_store(comppadlist, 0, (SV*)comppad_name); |
441 | av_store(comppadlist, 1, (SV*)comppad); | |
748a9306 LW |
442 | CvPADLIST(compcv) = comppadlist; |
443 | ||
a0d0e21e LW |
444 | if (xsinit) |
445 | (*xsinit)(); /* in case linked C routines want magical variables */ | |
748a9306 LW |
446 | #ifdef VMS |
447 | init_os_extras(); | |
448 | #endif | |
93a17b20 | 449 | |
93a17b20 | 450 | init_predump_symbols(); |
8990e307 LW |
451 | if (!do_undump) |
452 | init_postdump_symbols(argc,argv,env); | |
93a17b20 | 453 | |
79072805 LW |
454 | init_lexer(); |
455 | ||
456 | /* now parse the script */ | |
457 | ||
458 | error_count = 0; | |
459 | if (yyparse() || error_count) { | |
460 | if (minus_c) | |
463ee0b2 | 461 | croak("%s had compilation errors.\n", origfilename); |
79072805 | 462 | else { |
463ee0b2 | 463 | croak("Execution of %s aborted due to compilation errors.\n", |
79072805 | 464 | origfilename); |
378cc40b | 465 | } |
79072805 LW |
466 | } |
467 | curcop->cop_line = 0; | |
468 | curstash = defstash; | |
469 | preprocess = FALSE; | |
470 | if (e_fp) { | |
471 | e_fp = Nullfp; | |
472 | (void)UNLINK(e_tmpname); | |
378cc40b | 473 | } |
a687059c | 474 | |
93a17b20 | 475 | /* now that script is parsed, we can modify record separator */ |
a687059c | 476 | |
93a17b20 LW |
477 | rs = nrs; |
478 | rslen = nrslen; | |
479 | rschar = nrschar; | |
480 | rspara = (nrslen == 2); | |
85e6fe83 | 481 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs, rslen); |
45d8adaa | 482 | |
79072805 LW |
483 | if (do_undump) |
484 | my_unexec(); | |
485 | ||
8990e307 LW |
486 | if (dowarn) |
487 | gv_check(defstash); | |
488 | ||
a0d0e21e LW |
489 | LEAVE; |
490 | FREETMPS; | |
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; |
93a17b20 | 511 | return(statusvalue); /* my_exit() was called */ |
79072805 LW |
512 | case 3: |
513 | if (!restartop) { | |
514 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 515 | FREETMPS; |
8990e307 | 516 | return 1; |
83025b21 | 517 | } |
79072805 LW |
518 | if (stack != mainstack) { |
519 | dSP; | |
520 | SWITCHSTACK(stack, mainstack); | |
521 | } | |
522 | break; | |
8d063cd8 | 523 | } |
79072805 LW |
524 | |
525 | if (!restartop) { | |
526 | DEBUG_x(dump_all()); | |
527 | DEBUG(fprintf(stderr,"\nEXECUTING...\n\n")); | |
528 | ||
529 | if (minus_c) { | |
530 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
531 | my_exit(0); | |
532 | } | |
a0d0e21e LW |
533 | if (perldb && DBsingle) |
534 | sv_setiv(DBsingle, 1); | |
45d8adaa | 535 | } |
79072805 LW |
536 | |
537 | /* do it */ | |
538 | ||
539 | if (restartop) { | |
540 | op = restartop; | |
541 | restartop = 0; | |
542 | run(); | |
543 | } | |
544 | else if (main_start) { | |
545 | op = main_start; | |
546 | run(); | |
547 | } | |
79072805 LW |
548 | |
549 | my_exit(0); | |
a0d0e21e | 550 | return 0; |
79072805 LW |
551 | } |
552 | ||
553 | void | |
554 | my_exit(status) | |
748a9306 | 555 | U32 status; |
79072805 | 556 | { |
a0d0e21e LW |
557 | register CONTEXT *cx; |
558 | I32 gimme; | |
559 | SV **newsp; | |
560 | ||
748a9306 | 561 | statusvalue = FIXSTATUS(status); |
a0d0e21e LW |
562 | if (cxstack_ix >= 0) { |
563 | if (cxstack_ix > 0) | |
564 | dounwind(0); | |
565 | POPBLOCK(cx,curpm); | |
566 | LEAVE; | |
567 | } | |
79072805 LW |
568 | longjmp(top_env, 2); |
569 | } | |
570 | ||
a0d0e21e LW |
571 | SV* |
572 | perl_get_sv(name, create) | |
573 | char* name; | |
574 | I32 create; | |
575 | { | |
576 | GV* gv = gv_fetchpv(name, create, SVt_PV); | |
577 | if (gv) | |
578 | return GvSV(gv); | |
579 | return Nullsv; | |
580 | } | |
581 | ||
582 | AV* | |
583 | perl_get_av(name, create) | |
584 | char* name; | |
585 | I32 create; | |
586 | { | |
587 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); | |
588 | if (create) | |
589 | return GvAVn(gv); | |
590 | if (gv) | |
591 | return GvAV(gv); | |
592 | return Nullav; | |
593 | } | |
594 | ||
595 | HV* | |
596 | perl_get_hv(name, create) | |
597 | char* name; | |
598 | I32 create; | |
599 | { | |
600 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); | |
601 | if (create) | |
602 | return GvHVn(gv); | |
603 | if (gv) | |
604 | return GvHV(gv); | |
605 | return Nullhv; | |
606 | } | |
607 | ||
608 | CV* | |
609 | perl_get_cv(name, create) | |
610 | char* name; | |
611 | I32 create; | |
612 | { | |
613 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); | |
614 | if (create && !GvCV(gv)) | |
615 | return newSUB(start_subparse(), | |
616 | newSVOP(OP_CONST, 0, newSVpv(name,0)), | |
4633a7c4 | 617 | Nullop, |
a0d0e21e LW |
618 | Nullop); |
619 | if (gv) | |
620 | return GvCV(gv); | |
621 | return Nullcv; | |
622 | } | |
623 | ||
79072805 LW |
624 | /* Be sure to refetch the stack pointer after calling these routines. */ |
625 | ||
a0d0e21e LW |
626 | I32 |
627 | perl_call_argv(subname, flags, argv) | |
8990e307 | 628 | char *subname; |
a0d0e21e LW |
629 | I32 flags; /* See G_* flags in cop.h */ |
630 | register char **argv; /* null terminated arg list */ | |
8990e307 | 631 | { |
a0d0e21e | 632 | dSP; |
8990e307 | 633 | |
a0d0e21e LW |
634 | PUSHMARK(sp); |
635 | if (argv) { | |
8990e307 | 636 | while (*argv) { |
a0d0e21e | 637 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
8990e307 LW |
638 | argv++; |
639 | } | |
a0d0e21e | 640 | PUTBACK; |
8990e307 | 641 | } |
a0d0e21e | 642 | return perl_call_pv(subname, flags); |
8990e307 LW |
643 | } |
644 | ||
a0d0e21e LW |
645 | I32 |
646 | perl_call_pv(subname, flags) | |
647 | char *subname; /* name of the subroutine */ | |
648 | I32 flags; /* See G_* flags in cop.h */ | |
649 | { | |
650 | return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); | |
651 | } | |
652 | ||
653 | I32 | |
654 | perl_call_method(methname, flags) | |
655 | char *methname; /* name of the subroutine */ | |
656 | I32 flags; /* See G_* flags in cop.h */ | |
657 | { | |
658 | dSP; | |
659 | OP myop; | |
660 | if (!op) | |
661 | op = &myop; | |
662 | XPUSHs(sv_2mortal(newSVpv(methname,0))); | |
663 | PUTBACK; | |
664 | pp_method(); | |
665 | return perl_call_sv(*stack_sp--, flags); | |
666 | } | |
667 | ||
668 | /* May be called with any of a CV, a GV, or an SV containing the name. */ | |
669 | I32 | |
670 | perl_call_sv(sv, flags) | |
671 | SV* sv; | |
672 | I32 flags; /* See G_* flags in cop.h */ | |
673 | { | |
674 | LOGOP myop; /* fake syntax tree node */ | |
675 | SV** sp = stack_sp; | |
676 | I32 oldmark = TOPMARK; | |
677 | I32 retval; | |
678 | jmp_buf oldtop; | |
679 | I32 oldscope; | |
680 | ||
681 | if (flags & G_DISCARD) { | |
682 | ENTER; | |
683 | SAVETMPS; | |
684 | } | |
685 | ||
686 | SAVESPTR(op); | |
687 | op = (OP*)&myop; | |
688 | Zero(op, 1, LOGOP); | |
689 | EXTEND(stack_sp, 1); | |
690 | *++stack_sp = sv; | |
691 | oldscope = scopestack_ix; | |
692 | ||
693 | if (!(flags & G_NOARGS)) | |
694 | myop.op_flags = OPf_STACKED; | |
695 | myop.op_next = Nullop; | |
696 | myop.op_flags |= OPf_KNOW; | |
697 | if (flags & G_ARRAY) | |
698 | myop.op_flags |= OPf_LIST; | |
699 | ||
700 | if (flags & G_EVAL) { | |
701 | Copy(top_env, oldtop, 1, jmp_buf); | |
702 | ||
703 | cLOGOP->op_other = op; | |
704 | markstack_ptr--; | |
4633a7c4 LW |
705 | /* we're trying to emulate pp_entertry() here */ |
706 | { | |
707 | register CONTEXT *cx; | |
708 | I32 gimme = GIMME; | |
709 | ||
710 | ENTER; | |
711 | SAVETMPS; | |
712 | ||
713 | push_return(op->op_next); | |
714 | PUSHBLOCK(cx, CXt_EVAL, stack_sp); | |
715 | PUSHEVAL(cx, 0, 0); | |
716 | eval_root = op; /* Only needed so that goto works right. */ | |
717 | ||
718 | in_eval = 1; | |
719 | if (flags & G_KEEPERR) | |
720 | in_eval |= 4; | |
721 | else | |
722 | sv_setpv(GvSV(errgv),""); | |
723 | } | |
a0d0e21e LW |
724 | markstack_ptr++; |
725 | ||
726 | restart: | |
727 | switch (setjmp(top_env)) { | |
728 | case 0: | |
729 | break; | |
730 | case 1: | |
748a9306 | 731 | #ifdef VMS |
a0d0e21e | 732 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
733 | #else |
734 | statusvalue = 1; | |
735 | #endif | |
a0d0e21e LW |
736 | /* FALL THROUGH */ |
737 | case 2: | |
738 | /* my_exit() was called */ | |
739 | curstash = defstash; | |
740 | FREETMPS; | |
741 | Copy(oldtop, top_env, 1, jmp_buf); | |
742 | if (statusvalue) | |
743 | croak("Callback called exit"); | |
744 | my_exit(statusvalue); | |
745 | /* NOTREACHED */ | |
746 | case 3: | |
747 | if (restartop) { | |
748 | op = restartop; | |
749 | restartop = 0; | |
750 | goto restart; | |
751 | } | |
752 | stack_sp = stack_base + oldmark; | |
753 | if (flags & G_ARRAY) | |
754 | retval = 0; | |
755 | else { | |
756 | retval = 1; | |
757 | *++stack_sp = &sv_undef; | |
758 | } | |
759 | goto cleanup; | |
760 | } | |
761 | } | |
762 | ||
763 | if (op == (OP*)&myop) | |
764 | op = pp_entersub(); | |
765 | if (op) | |
766 | run(); | |
767 | retval = stack_sp - (stack_base + oldmark); | |
4633a7c4 LW |
768 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
769 | sv_setpv(GvSV(errgv),""); | |
a0d0e21e LW |
770 | |
771 | cleanup: | |
772 | if (flags & G_EVAL) { | |
773 | if (scopestack_ix > oldscope) { | |
a0a2876f LW |
774 | SV **newsp; |
775 | PMOP *newpm; | |
776 | I32 gimme; | |
777 | register CONTEXT *cx; | |
778 | I32 optype; | |
779 | ||
780 | POPBLOCK(cx,newpm); | |
781 | POPEVAL(cx); | |
782 | pop_return(); | |
783 | curpm = newpm; | |
784 | LEAVE; | |
a0d0e21e LW |
785 | } |
786 | Copy(oldtop, top_env, 1, jmp_buf); | |
787 | } | |
788 | if (flags & G_DISCARD) { | |
789 | stack_sp = stack_base + oldmark; | |
790 | retval = 0; | |
791 | FREETMPS; | |
792 | LEAVE; | |
793 | } | |
794 | return retval; | |
795 | } | |
796 | ||
4633a7c4 | 797 | /* Eval a string. */ |
8990e307 | 798 | |
a0d0e21e | 799 | I32 |
4633a7c4 | 800 | perl_eval_sv(sv, flags) |
8990e307 | 801 | SV* sv; |
4633a7c4 | 802 | I32 flags; /* See G_* flags in cop.h */ |
a0d0e21e LW |
803 | { |
804 | UNOP myop; /* fake syntax tree node */ | |
4633a7c4 LW |
805 | SV** sp = stack_sp; |
806 | I32 oldmark = sp - stack_base; | |
807 | I32 retval; | |
808 | jmp_buf oldtop; | |
809 | I32 oldscope; | |
79072805 | 810 | |
4633a7c4 LW |
811 | if (flags & G_DISCARD) { |
812 | ENTER; | |
813 | SAVETMPS; | |
814 | } | |
815 | ||
79072805 | 816 | SAVESPTR(op); |
79072805 | 817 | op = (OP*)&myop; |
a0d0e21e | 818 | Zero(op, 1, UNOP); |
4633a7c4 LW |
819 | EXTEND(stack_sp, 1); |
820 | *++stack_sp = sv; | |
821 | oldscope = scopestack_ix; | |
79072805 | 822 | |
4633a7c4 LW |
823 | if (!(flags & G_NOARGS)) |
824 | myop.op_flags = OPf_STACKED; | |
79072805 | 825 | myop.op_next = Nullop; |
4633a7c4 LW |
826 | myop.op_flags |= OPf_KNOW; |
827 | if (flags & G_ARRAY) | |
828 | myop.op_flags |= OPf_LIST; | |
79072805 | 829 | |
4633a7c4 LW |
830 | Copy(top_env, oldtop, 1, jmp_buf); |
831 | ||
832 | restart: | |
833 | switch (setjmp(top_env)) { | |
834 | case 0: | |
835 | break; | |
836 | case 1: | |
837 | #ifdef VMS | |
838 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ | |
839 | #else | |
840 | statusvalue = 1; | |
841 | #endif | |
842 | /* FALL THROUGH */ | |
843 | case 2: | |
844 | /* my_exit() was called */ | |
845 | curstash = defstash; | |
846 | FREETMPS; | |
847 | Copy(oldtop, top_env, 1, jmp_buf); | |
848 | if (statusvalue) | |
849 | croak("Callback called exit"); | |
850 | my_exit(statusvalue); | |
851 | /* NOTREACHED */ | |
852 | case 3: | |
853 | if (restartop) { | |
854 | op = restartop; | |
855 | restartop = 0; | |
856 | goto restart; | |
857 | } | |
858 | stack_sp = stack_base + oldmark; | |
859 | if (flags & G_ARRAY) | |
860 | retval = 0; | |
861 | else { | |
862 | retval = 1; | |
863 | *++stack_sp = &sv_undef; | |
864 | } | |
865 | goto cleanup; | |
866 | } | |
867 | ||
868 | if (op == (OP*)&myop) | |
869 | op = pp_entereval(); | |
870 | if (op) | |
463ee0b2 | 871 | run(); |
4633a7c4 LW |
872 | retval = stack_sp - (stack_base + oldmark); |
873 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) | |
874 | sv_setpv(GvSV(errgv),""); | |
875 | ||
876 | cleanup: | |
877 | Copy(oldtop, top_env, 1, jmp_buf); | |
878 | if (flags & G_DISCARD) { | |
879 | stack_sp = stack_base + oldmark; | |
880 | retval = 0; | |
881 | FREETMPS; | |
882 | LEAVE; | |
883 | } | |
884 | return retval; | |
885 | } | |
886 | ||
887 | /* Require a module. */ | |
888 | ||
889 | void | |
890 | perl_require_pv(pv) | |
891 | char* pv; | |
892 | { | |
893 | SV* sv = sv_newmortal(); | |
894 | sv_setpv(sv, "require '"); | |
895 | sv_catpv(sv, pv); | |
896 | sv_catpv(sv, "'"); | |
897 | perl_eval_sv(sv, G_DISCARD); | |
79072805 LW |
898 | } |
899 | ||
79072805 | 900 | void |
79072805 LW |
901 | magicname(sym,name,namlen) |
902 | char *sym; | |
903 | char *name; | |
904 | I32 namlen; | |
905 | { | |
906 | register GV *gv; | |
907 | ||
85e6fe83 | 908 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
79072805 LW |
909 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
910 | } | |
911 | ||
748a9306 LW |
912 | #if defined(DOSISH) |
913 | # define PERLLIB_SEP ';' | |
79072805 | 914 | #else |
232e078e AD |
915 | # if defined(VMS) |
916 | # define PERLLIB_SEP '|' | |
917 | # else | |
748a9306 | 918 | # define PERLLIB_SEP ':' |
232e078e | 919 | # endif |
79072805 LW |
920 | #endif |
921 | ||
922 | static void | |
923 | incpush(p) | |
924 | char *p; | |
925 | { | |
926 | char *s; | |
927 | ||
928 | if (!p) | |
929 | return; | |
930 | ||
931 | /* Break at all separators */ | |
932 | while (*p) { | |
933 | /* First, skip any consecutive separators */ | |
934 | while ( *p == PERLLIB_SEP ) { | |
935 | /* Uncomment the next line for PATH semantics */ | |
a0d0e21e | 936 | /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ |
79072805 LW |
937 | p++; |
938 | } | |
93a17b20 | 939 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
a0d0e21e | 940 | av_push(GvAVn(incgv), newSVpv(p, (STRLEN)(s - p))); |
79072805 LW |
941 | p = s + 1; |
942 | } else { | |
a0d0e21e | 943 | av_push(GvAVn(incgv), newSVpv(p, 0)); |
79072805 LW |
944 | break; |
945 | } | |
946 | } | |
947 | } | |
948 | ||
4633a7c4 | 949 | void |
1a30305b | 950 | usage(name) /* XXX move this out into a module ? */ |
4633a7c4 LW |
951 | char *name; |
952 | { | |
953 | printf("\nUsage: %s [switches] [filename] [arguments]\n",name); | |
954 | printf("\n -0[octal] specify record separator (\\0, if no argument)"); | |
955 | printf("\n -a autosplit mode with -n or -p"); | |
956 | printf("\n -c check syntax only (runs BEGIN and END blocks)"); | |
1a30305b | 957 | printf("\n -d[:debugger] run scripts under debugger"); |
4633a7c4 LW |
958 | printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)"); |
959 | printf("\n -e command one line of script, multiple -e options are allowed"); | |
960 | printf("\n [filename] can be ommitted when -e is used"); | |
961 | printf("\n -F regexp regular expression for autosplit (-a)"); | |
962 | printf("\n -i[extension] edit <> files in place (make backup if extension supplied)"); | |
963 | printf("\n -Idirectory specify include directory (may be used more then once)"); | |
964 | printf("\n -l[octal] enable line ending processing, specifies line teminator"); | |
965 | printf("\n -n assume 'while (<>) { ... }' loop arround your script"); | |
966 | printf("\n -p assume loop like -n but print line also like sed"); | |
967 | printf("\n -P run script through C preprocessor before compilation"); | |
968 | #ifdef OS2 | |
969 | printf("\n -R enable REXX variable pool"); | |
970 | #endif | |
971 | printf("\n -s enable some switch parsing for switches after script name"); | |
972 | printf("\n -S look for the script using PATH environment variable"); | |
973 | printf("\n -T turn on tainting checks"); | |
974 | printf("\n -u dump core after parsing script"); | |
975 | printf("\n -U allow unsafe operations"); | |
976 | printf("\n -v print version number and patchlevel of perl"); | |
1a30305b | 977 | printf("\n -V[:variable] print perl configuration information"); |
4633a7c4 LW |
978 | printf("\n -w turn warnings on for compilation of your script"); |
979 | printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); | |
980 | } | |
981 | ||
79072805 LW |
982 | /* This routine handles any switches that can be given during run */ |
983 | ||
984 | char * | |
985 | moreswitches(s) | |
986 | char *s; | |
987 | { | |
988 | I32 numlen; | |
989 | ||
990 | switch (*s) { | |
991 | case '0': | |
992 | nrschar = scan_oct(s, 4, &numlen); | |
a0d0e21e | 993 | nrs = savepvn("\n",1); |
79072805 LW |
994 | *nrs = nrschar; |
995 | if (nrschar > 0377) { | |
996 | nrslen = 0; | |
997 | nrs = ""; | |
998 | } | |
999 | else if (!nrschar && numlen >= 2) { | |
1000 | nrslen = 2; | |
1001 | nrs = "\n\n"; | |
1002 | nrschar = '\n'; | |
1003 | } | |
1004 | return s + numlen; | |
2304df62 AD |
1005 | case 'F': |
1006 | minus_F = TRUE; | |
a0d0e21e | 1007 | splitstr = savepv(s + 1); |
2304df62 AD |
1008 | s += strlen(s); |
1009 | return s; | |
79072805 LW |
1010 | case 'a': |
1011 | minus_a = TRUE; | |
1012 | s++; | |
1013 | return s; | |
1014 | case 'c': | |
1015 | minus_c = TRUE; | |
1016 | s++; | |
1017 | return s; | |
1018 | case 'd': | |
463ee0b2 | 1019 | taint_not("-d"); |
4633a7c4 LW |
1020 | s++; |
1021 | if (*s == ':') { | |
1022 | sprintf(buf, "use Devel::%s;", ++s); | |
1023 | s += strlen(s); | |
1024 | my_setenv("PERL5DB",buf); | |
1025 | } | |
a0d0e21e LW |
1026 | if (!perldb) { |
1027 | perldb = TRUE; | |
1028 | init_debugger(); | |
1029 | } | |
79072805 LW |
1030 | return s; |
1031 | case 'D': | |
1032 | #ifdef DEBUGGING | |
463ee0b2 | 1033 | taint_not("-D"); |
79072805 | 1034 | if (isALPHA(s[1])) { |
8990e307 | 1035 | static char debopts[] = "psltocPmfrxuLHXD"; |
79072805 LW |
1036 | char *d; |
1037 | ||
93a17b20 | 1038 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
79072805 LW |
1039 | debug |= 1 << (d - debopts); |
1040 | } | |
1041 | else { | |
1042 | debug = atoi(s+1); | |
1043 | for (s++; isDIGIT(*s); s++) ; | |
1044 | } | |
8990e307 | 1045 | debug |= 0x80000000; |
79072805 LW |
1046 | #else |
1047 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
a0d0e21e | 1048 | for (s++; isALNUM(*s); s++) ; |
79072805 LW |
1049 | #endif |
1050 | /*SUPPRESS 530*/ | |
1051 | return s; | |
4633a7c4 LW |
1052 | case 'h': |
1053 | usage(origargv[0]); | |
1054 | exit(0); | |
79072805 LW |
1055 | case 'i': |
1056 | if (inplace) | |
1057 | Safefree(inplace); | |
a0d0e21e | 1058 | inplace = savepv(s+1); |
79072805 LW |
1059 | /*SUPPRESS 530*/ |
1060 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
1061 | *s = '\0'; | |
1062 | break; | |
1063 | case 'I': | |
463ee0b2 | 1064 | taint_not("-I"); |
79072805 | 1065 | if (*++s) { |
748a9306 LW |
1066 | char *e; |
1067 | for (e = s; *e && !isSPACE(*e); e++) ; | |
1068 | av_push(GvAVn(incgv),newSVpv(s,e-s)); | |
1069 | if (*e) | |
1070 | return e; | |
79072805 LW |
1071 | } |
1072 | else | |
463ee0b2 | 1073 | croak("No space allowed after -I"); |
79072805 LW |
1074 | break; |
1075 | case 'l': | |
1076 | minus_l = TRUE; | |
1077 | s++; | |
a0d0e21e LW |
1078 | if (ors) |
1079 | Safefree(ors); | |
79072805 | 1080 | if (isDIGIT(*s)) { |
a0d0e21e | 1081 | ors = savepv("\n"); |
79072805 LW |
1082 | orslen = 1; |
1083 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); | |
1084 | s += numlen; | |
1085 | } | |
1086 | else { | |
a0d0e21e | 1087 | ors = savepvn(nrs,nrslen); |
79072805 LW |
1088 | orslen = nrslen; |
1089 | } | |
1090 | return s; | |
1a30305b | 1091 | case 'M': |
1092 | taint_not("-M"); /* XXX ? */ | |
1093 | /* FALL THROUGH */ | |
1094 | case 'm': | |
1095 | taint_not("-m"); /* XXX ? */ | |
1096 | if (*++s) { | |
1097 | char tmpbuf[90]; | |
1098 | if (preambleav == NULL) | |
1099 | preambleav = newAV(); | |
1100 | /* We allow -M'Module qw(Foo Bar)' */ | |
1101 | if (*(s-1) == 'M') | |
1102 | sprintf(tmpbuf, "use %s;", s); | |
1103 | else | |
1104 | sprintf(tmpbuf, "use %s ();", s); | |
1105 | av_push(preambleav, newSVpv(tmpbuf,0)); | |
1106 | s += strlen(s); | |
1107 | } | |
1108 | else | |
1109 | croak("No space allowed after -%c", *(s-1)); | |
1110 | return s; | |
79072805 LW |
1111 | case 'n': |
1112 | minus_n = TRUE; | |
1113 | s++; | |
1114 | return s; | |
1115 | case 'p': | |
1116 | minus_p = TRUE; | |
1117 | s++; | |
1118 | return s; | |
1119 | case 's': | |
463ee0b2 | 1120 | taint_not("-s"); |
79072805 LW |
1121 | doswitches = TRUE; |
1122 | s++; | |
1123 | return s; | |
463ee0b2 LW |
1124 | case 'T': |
1125 | tainting = TRUE; | |
1126 | s++; | |
1127 | return s; | |
79072805 LW |
1128 | case 'u': |
1129 | do_undump = TRUE; | |
1130 | s++; | |
1131 | return s; | |
1132 | case 'U': | |
1133 | unsafe = TRUE; | |
1134 | s++; | |
1135 | return s; | |
1136 | case 'v': | |
1a30305b | 1137 | printf("\nThis is perl, version %s beta2",patchlevel); |
1138 | ||
1139 | #if defined(DEBUGGING) || defined(EMBED) || defined(MULTIPLICITY) | |
1140 | fputs(" with", stdout); | |
1141 | #ifdef DEBUGGING | |
1142 | fputs(" DEBUGGING", stdout); | |
1143 | #endif | |
1144 | #ifdef EMBED | |
1145 | fputs(" EMBED", stdout); | |
1146 | #endif | |
1147 | #ifdef MULTIPLICITY | |
1148 | fputs(" MULTIPLICITY", stdout); | |
1149 | #endif | |
1150 | #endif | |
1151 | ||
1152 | fputs("\n\nCopyright 1987-1996, Larry Wall\n",stdout); | |
79072805 LW |
1153 | #ifdef MSDOS |
1154 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
1155 | stdout); | |
4633a7c4 | 1156 | #endif |
79072805 | 1157 | #ifdef OS2 |
1a30305b | 1158 | fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
1159 | "Version 5 port Copyright (c) 1994-1995, Andreas Kaiser\n", stdout); | |
79072805 | 1160 | #endif |
79072805 | 1161 | #ifdef atarist |
1a30305b | 1162 | fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout); |
79072805 LW |
1163 | #endif |
1164 | fputs("\n\ | |
1165 | Perl may be copied only under the terms of either the Artistic License or the\n\ | |
1a30305b | 1166 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n",stdout); |
79072805 LW |
1167 | #ifdef MSDOS |
1168 | usage(origargv[0]); | |
1169 | #endif | |
1170 | exit(0); | |
1171 | case 'w': | |
1172 | dowarn = TRUE; | |
1173 | s++; | |
1174 | return s; | |
a0d0e21e | 1175 | case '*': |
79072805 LW |
1176 | case ' ': |
1177 | if (s[1] == '-') /* Additional switches on #! line. */ | |
1178 | return s+2; | |
1179 | break; | |
a0d0e21e | 1180 | case '-': |
79072805 LW |
1181 | case 0: |
1182 | case '\n': | |
1183 | case '\t': | |
1184 | break; | |
a0d0e21e LW |
1185 | case 'P': |
1186 | if (preprocess) | |
1187 | return s+1; | |
1188 | /* FALL THROUGH */ | |
79072805 | 1189 | default: |
a0d0e21e | 1190 | croak("Can't emulate -%.1s on #! line",s); |
79072805 LW |
1191 | } |
1192 | return Nullch; | |
1193 | } | |
1194 | ||
1195 | /* compliments of Tom Christiansen */ | |
1196 | ||
1197 | /* unexec() can be found in the Gnu emacs distribution */ | |
1198 | ||
1199 | void | |
1200 | my_unexec() | |
1201 | { | |
1202 | #ifdef UNEXEC | |
1203 | int status; | |
1204 | extern int etext; | |
1205 | ||
1206 | sprintf (buf, "%s.perldump", origfilename); | |
1207 | sprintf (tokenbuf, "%s/perl", BIN); | |
1208 | ||
1209 | status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); | |
1210 | if (status) | |
1211 | fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); | |
a0d0e21e | 1212 | exit(status); |
79072805 LW |
1213 | #else |
1214 | ABORT(); /* for use with undump */ | |
1215 | #endif | |
1216 | } | |
1217 | ||
1218 | static void | |
1219 | init_main_stash() | |
1220 | { | |
463ee0b2 LW |
1221 | GV *gv; |
1222 | curstash = defstash = newHV(); | |
79072805 | 1223 | curstname = newSVpv("main",4); |
adbc6bb1 LW |
1224 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
1225 | SvREFCNT_dec(GvHV(gv)); | |
1226 | GvHV(gv) = (HV*)SvREFCNT_inc(defstash); | |
463ee0b2 | 1227 | SvREADONLY_on(gv); |
a0d0e21e | 1228 | HvNAME(defstash) = savepv("main"); |
85e6fe83 | 1229 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
79072805 | 1230 | SvMULTI_on(incgv); |
a0d0e21e | 1231 | defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
4633a7c4 LW |
1232 | errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
1233 | SvMULTI_on(errgv); | |
8990e307 LW |
1234 | curstash = defstash; |
1235 | compiling.cop_stash = defstash; | |
adbc6bb1 | 1236 | debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
4633a7c4 LW |
1237 | /* We must init $/ before switches are processed. */ |
1238 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); | |
79072805 LW |
1239 | } |
1240 | ||
a0d0e21e LW |
1241 | #ifdef CAN_PROTOTYPE |
1242 | static void | |
1243 | open_script(char *scriptname, bool dosearch, SV *sv) | |
1244 | #else | |
79072805 LW |
1245 | static void |
1246 | open_script(scriptname,dosearch,sv) | |
1247 | char *scriptname; | |
1248 | bool dosearch; | |
1249 | SV *sv; | |
a0d0e21e | 1250 | #endif |
79072805 LW |
1251 | { |
1252 | char *xfound = Nullch; | |
1253 | char *xfailed = Nullch; | |
1254 | register char *s; | |
1255 | I32 len; | |
1256 | ||
93a17b20 | 1257 | if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { |
79072805 LW |
1258 | |
1259 | bufend = s + strlen(s); | |
1260 | while (*s) { | |
1261 | #ifndef DOSISH | |
1262 | s = cpytill(tokenbuf,s,bufend,':',&len); | |
1263 | #else | |
1264 | #ifdef atarist | |
1265 | for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); | |
1266 | tokenbuf[len] = '\0'; | |
1267 | #else | |
1268 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
1269 | tokenbuf[len] = '\0'; | |
1270 | #endif | |
1271 | #endif | |
1272 | if (*s) | |
1273 | s++; | |
1274 | #ifndef DOSISH | |
1275 | if (len && tokenbuf[len-1] != '/') | |
1276 | #else | |
1277 | #ifdef atarist | |
1278 | if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) | |
1279 | #else | |
1280 | if (len && tokenbuf[len-1] != '\\') | |
1281 | #endif | |
1282 | #endif | |
1283 | (void)strcat(tokenbuf+len,"/"); | |
1284 | (void)strcat(tokenbuf+len,scriptname); | |
1285 | DEBUG_p(fprintf(stderr,"Looking for %s\n",tokenbuf)); | |
a0d0e21e | 1286 | if (Stat(tokenbuf,&statbuf) < 0) /* not there? */ |
79072805 LW |
1287 | continue; |
1288 | if (S_ISREG(statbuf.st_mode) | |
1289 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
1290 | xfound = tokenbuf; /* bingo! */ | |
1291 | break; | |
1292 | } | |
1293 | if (!xfailed) | |
a0d0e21e | 1294 | xfailed = savepv(tokenbuf); |
79072805 LW |
1295 | } |
1296 | if (!xfound) | |
463ee0b2 | 1297 | croak("Can't execute %s", xfailed ? xfailed : scriptname ); |
79072805 LW |
1298 | if (xfailed) |
1299 | Safefree(xfailed); | |
1300 | scriptname = xfound; | |
1301 | } | |
1302 | ||
a0d0e21e | 1303 | origfilename = savepv(e_fp ? "-e" : scriptname); |
79072805 LW |
1304 | curcop->cop_filegv = gv_fetchfile(origfilename); |
1305 | if (strEQ(origfilename,"-")) | |
1306 | scriptname = ""; | |
1307 | if (preprocess) { | |
1308 | char *cpp = CPPSTDIN; | |
1309 | ||
1310 | if (strEQ(cpp,"cppstdin")) | |
1311 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
1312 | else | |
1313 | sprintf(tokenbuf, "%s", cpp); | |
1314 | sv_catpv(sv,"-I"); | |
fed7345c | 1315 | sv_catpv(sv,PRIVLIB_EXP); |
79072805 LW |
1316 | #ifdef MSDOS |
1317 | (void)sprintf(buf, "\ | |
1318 | sed %s -e \"/^[^#]/b\" \ | |
1319 | -e \"/^#[ ]*include[ ]/b\" \ | |
1320 | -e \"/^#[ ]*define[ ]/b\" \ | |
1321 | -e \"/^#[ ]*if[ ]/b\" \ | |
1322 | -e \"/^#[ ]*ifdef[ ]/b\" \ | |
1323 | -e \"/^#[ ]*ifndef[ ]/b\" \ | |
1324 | -e \"/^#[ ]*else/b\" \ | |
1325 | -e \"/^#[ ]*elif[ ]/b\" \ | |
1326 | -e \"/^#[ ]*undef[ ]/b\" \ | |
1327 | -e \"/^#[ ]*endif/b\" \ | |
1328 | -e \"s/^#.*//\" \ | |
1329 | %s | %s -C %s %s", | |
1330 | (doextract ? "-e \"1,/^#/d\n\"" : ""), | |
1331 | #else | |
1332 | (void)sprintf(buf, "\ | |
1333 | %s %s -e '/^[^#]/b' \ | |
1334 | -e '/^#[ ]*include[ ]/b' \ | |
1335 | -e '/^#[ ]*define[ ]/b' \ | |
1336 | -e '/^#[ ]*if[ ]/b' \ | |
1337 | -e '/^#[ ]*ifdef[ ]/b' \ | |
1338 | -e '/^#[ ]*ifndef[ ]/b' \ | |
1339 | -e '/^#[ ]*else/b' \ | |
1340 | -e '/^#[ ]*elif[ ]/b' \ | |
1341 | -e '/^#[ ]*undef[ ]/b' \ | |
1342 | -e '/^#[ ]*endif/b' \ | |
1343 | -e 's/^[ ]*#.*//' \ | |
1344 | %s | %s -C %s %s", | |
1345 | #ifdef LOC_SED | |
1346 | LOC_SED, | |
1347 | #else | |
1348 | "sed", | |
1349 | #endif | |
1350 | (doextract ? "-e '1,/^#/d\n'" : ""), | |
1351 | #endif | |
463ee0b2 | 1352 | scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); |
79072805 LW |
1353 | doextract = FALSE; |
1354 | #ifdef IAMSUID /* actually, this is caught earlier */ | |
1355 | if (euid != uid && !euid) { /* if running suidperl */ | |
1356 | #ifdef HAS_SETEUID | |
1357 | (void)seteuid(uid); /* musn't stay setuid root */ | |
1358 | #else | |
1359 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1360 | (void)setreuid((Uid_t)-1, uid); |
1361 | #else | |
1362 | #ifdef HAS_SETRESUID | |
1363 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); | |
79072805 LW |
1364 | #else |
1365 | setuid(uid); | |
1366 | #endif | |
1367 | #endif | |
85e6fe83 | 1368 | #endif |
79072805 | 1369 | if (geteuid() != uid) |
463ee0b2 | 1370 | croak("Can't do seteuid!\n"); |
79072805 LW |
1371 | } |
1372 | #endif /* IAMSUID */ | |
1373 | rsfp = my_popen(buf,"r"); | |
1374 | } | |
1375 | else if (!*scriptname) { | |
463ee0b2 | 1376 | taint_not("program input from stdin"); |
79072805 LW |
1377 | rsfp = stdin; |
1378 | } | |
1379 | else | |
1380 | rsfp = fopen(scriptname,"r"); | |
45d8adaa | 1381 | if ((FILE*)rsfp == Nullfp) { |
13281fa4 | 1382 | #ifdef DOSUID |
a687059c | 1383 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
a0d0e21e | 1384 | if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
13281fa4 | 1385 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 1386 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1387 | execv(buf, origargv); /* try again */ |
463ee0b2 | 1388 | croak("Can't do setuid\n"); |
13281fa4 LW |
1389 | } |
1390 | #endif | |
1391 | #endif | |
463ee0b2 | 1392 | croak("Can't open perl script \"%s\": %s\n", |
2304df62 | 1393 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
13281fa4 | 1394 | } |
79072805 | 1395 | } |
8d063cd8 | 1396 | |
79072805 LW |
1397 | static void |
1398 | validate_suid(validarg) | |
1399 | char *validarg; | |
1400 | { | |
13281fa4 LW |
1401 | /* do we need to emulate setuid on scripts? */ |
1402 | ||
1403 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
1404 | * in the kernel because of a security problem. Merely defining DOSUID | |
1405 | * in perl will not fix that problem, but if you have disabled setuid | |
1406 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
1407 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
1408 | * root version must be called suidperl or sperlN.NNN. If regular perl |
1409 | * discovers that it has opened a setuid script, it calls suidperl with | |
1410 | * the same argv that it had. If suidperl finds that the script it has | |
1411 | * just opened is NOT setuid root, it sets the effective uid back to the | |
1412 | * uid. We don't just make perl setuid root because that loses the | |
1413 | * effective uid we had before invoking perl, if it was different from the | |
1414 | * uid. | |
13281fa4 LW |
1415 | * |
1416 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
1417 | * be defined in suidperl only. suidperl must be setuid root. The | |
1418 | * Configure script will set this up for you if you want it. | |
1419 | */ | |
a687059c | 1420 | |
13281fa4 | 1421 | #ifdef DOSUID |
a0d0e21e LW |
1422 | char *s; |
1423 | ||
1424 | if (Fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
463ee0b2 | 1425 | croak("Can't stat script \"%s\"",origfilename); |
13281fa4 | 1426 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
79072805 | 1427 | I32 len; |
13281fa4 | 1428 | |
a687059c | 1429 | #ifdef IAMSUID |
fe14fcc3 | 1430 | #ifndef HAS_SETREUID |
a687059c LW |
1431 | /* On this access check to make sure the directories are readable, |
1432 | * there is actually a small window that the user could use to make | |
1433 | * filename point to an accessible directory. So there is a faint | |
1434 | * chance that someone could execute a setuid script down in a | |
1435 | * non-accessible directory. I don't know what to do about that. | |
1436 | * But I don't think it's too important. The manual lies when | |
1437 | * it says access() is useful in setuid programs. | |
1438 | */ | |
463ee0b2 LW |
1439 | if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
1440 | croak("Permission denied"); | |
a687059c LW |
1441 | #else |
1442 | /* If we can swap euid and uid, then we can determine access rights | |
1443 | * with a simple stat of the file, and then compare device and | |
1444 | * inode to make sure we did stat() on the same file we opened. | |
1445 | * Then we just have to make sure he or she can execute it. | |
1446 | */ | |
1447 | { | |
1448 | struct stat tmpstatbuf; | |
1449 | ||
85e6fe83 LW |
1450 | if ( |
1451 | #ifdef HAS_SETREUID | |
1452 | setreuid(euid,uid) < 0 | |
a0d0e21e LW |
1453 | #else |
1454 | # if HAS_SETRESUID | |
85e6fe83 | 1455 | setresuid(euid,uid,(Uid_t)-1) < 0 |
a0d0e21e | 1456 | # endif |
85e6fe83 LW |
1457 | #endif |
1458 | || getuid() != euid || geteuid() != uid) | |
463ee0b2 | 1459 | croak("Can't swap uid and euid"); /* really paranoid */ |
a0d0e21e | 1460 | if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) |
463ee0b2 | 1461 | croak("Permission denied"); /* testing full pathname here */ |
a687059c LW |
1462 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
1463 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
1464 | (void)fclose(rsfp); | |
79072805 | 1465 | if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ |
a687059c LW |
1466 | fprintf(rsfp, |
1467 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
1468 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
1469 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
1470 | statbuf.st_dev, statbuf.st_ino, | |
463ee0b2 | 1471 | SvPVX(GvSV(curcop->cop_filegv)), |
20188a90 | 1472 | statbuf.st_uid, statbuf.st_gid); |
79072805 | 1473 | (void)my_pclose(rsfp); |
a687059c | 1474 | } |
463ee0b2 | 1475 | croak("Permission denied\n"); |
a687059c | 1476 | } |
85e6fe83 LW |
1477 | if ( |
1478 | #ifdef HAS_SETREUID | |
1479 | setreuid(uid,euid) < 0 | |
a0d0e21e LW |
1480 | #else |
1481 | # if defined(HAS_SETRESUID) | |
85e6fe83 | 1482 | setresuid(uid,euid,(Uid_t)-1) < 0 |
a0d0e21e | 1483 | # endif |
85e6fe83 LW |
1484 | #endif |
1485 | || getuid() != uid || geteuid() != euid) | |
463ee0b2 | 1486 | croak("Can't reswap uid and euid"); |
27e2fb84 | 1487 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
463ee0b2 | 1488 | croak("Permission denied\n"); |
a687059c | 1489 | } |
fe14fcc3 | 1490 | #endif /* HAS_SETREUID */ |
a687059c LW |
1491 | #endif /* IAMSUID */ |
1492 | ||
27e2fb84 | 1493 | if (!S_ISREG(statbuf.st_mode)) |
463ee0b2 | 1494 | croak("Permission denied"); |
27e2fb84 | 1495 | if (statbuf.st_mode & S_IWOTH) |
463ee0b2 | 1496 | croak("Setuid/gid script is writable by world"); |
13281fa4 | 1497 | doswitches = FALSE; /* -s is insecure in suid */ |
79072805 | 1498 | curcop->cop_line++; |
13281fa4 LW |
1499 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
1500 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
463ee0b2 | 1501 | croak("No #! line"); |
663a0e37 LW |
1502 | s = tokenbuf+2; |
1503 | if (*s == ' ') s++; | |
45d8adaa | 1504 | while (!isSPACE(*s)) s++; |
27e2fb84 | 1505 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
463ee0b2 | 1506 | croak("Not a perl script"); |
a687059c | 1507 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
1508 | /* |
1509 | * #! arg must be what we saw above. They can invoke it by | |
1510 | * mentioning suidperl explicitly, but they may not add any strange | |
1511 | * arguments beyond what #! says if they do invoke suidperl that way. | |
1512 | */ | |
1513 | len = strlen(validarg); | |
1514 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 1515 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
463ee0b2 | 1516 | croak("Args must match #! line"); |
a687059c LW |
1517 | |
1518 | #ifndef IAMSUID | |
1519 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
1520 | euid == statbuf.st_uid) | |
1521 | if (!do_undump) | |
463ee0b2 | 1522 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1523 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1524 | #endif /* IAMSUID */ | |
13281fa4 LW |
1525 | |
1526 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 1527 | (void)fclose(rsfp); |
13281fa4 | 1528 | #ifndef IAMSUID |
27e2fb84 | 1529 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1530 | execv(buf, origargv); /* try again */ |
13281fa4 | 1531 | #endif |
463ee0b2 | 1532 | croak("Can't do setuid\n"); |
13281fa4 LW |
1533 | } |
1534 | ||
83025b21 | 1535 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
fe14fcc3 | 1536 | #ifdef HAS_SETEGID |
a687059c LW |
1537 | (void)setegid(statbuf.st_gid); |
1538 | #else | |
fe14fcc3 | 1539 | #ifdef HAS_SETREGID |
85e6fe83 LW |
1540 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
1541 | #else | |
1542 | #ifdef HAS_SETRESGID | |
1543 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); | |
a687059c LW |
1544 | #else |
1545 | setgid(statbuf.st_gid); | |
1546 | #endif | |
1547 | #endif | |
85e6fe83 | 1548 | #endif |
83025b21 | 1549 | if (getegid() != statbuf.st_gid) |
463ee0b2 | 1550 | croak("Can't do setegid!\n"); |
83025b21 | 1551 | } |
a687059c LW |
1552 | if (statbuf.st_mode & S_ISUID) { |
1553 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 1554 | #ifdef HAS_SETEUID |
a687059c LW |
1555 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
1556 | #else | |
fe14fcc3 | 1557 | #ifdef HAS_SETREUID |
85e6fe83 LW |
1558 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
1559 | #else | |
1560 | #ifdef HAS_SETRESUID | |
1561 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); | |
a687059c LW |
1562 | #else |
1563 | setuid(statbuf.st_uid); | |
1564 | #endif | |
1565 | #endif | |
85e6fe83 | 1566 | #endif |
83025b21 | 1567 | if (geteuid() != statbuf.st_uid) |
463ee0b2 | 1568 | croak("Can't do seteuid!\n"); |
a687059c | 1569 | } |
83025b21 | 1570 | else if (uid) { /* oops, mustn't run as root */ |
fe14fcc3 | 1571 | #ifdef HAS_SETEUID |
85e6fe83 | 1572 | (void)seteuid((Uid_t)uid); |
a687059c | 1573 | #else |
fe14fcc3 | 1574 | #ifdef HAS_SETREUID |
85e6fe83 | 1575 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
a687059c | 1576 | #else |
85e6fe83 LW |
1577 | #ifdef HAS_SETRESUID |
1578 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); | |
1579 | #else | |
1580 | setuid((Uid_t)uid); | |
1581 | #endif | |
a687059c LW |
1582 | #endif |
1583 | #endif | |
83025b21 | 1584 | if (geteuid() != uid) |
463ee0b2 | 1585 | croak("Can't do seteuid!\n"); |
83025b21 | 1586 | } |
748a9306 | 1587 | init_ids(); |
27e2fb84 | 1588 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
463ee0b2 | 1589 | croak("Permission denied\n"); /* they can't do this */ |
13281fa4 LW |
1590 | } |
1591 | #ifdef IAMSUID | |
1592 | else if (preprocess) | |
463ee0b2 | 1593 | croak("-P not allowed for setuid/setgid script\n"); |
13281fa4 | 1594 | else |
463ee0b2 | 1595 | croak("Script is not setuid/setgid in suidperl\n"); |
13281fa4 | 1596 | #endif /* IAMSUID */ |
a687059c | 1597 | #else /* !DOSUID */ |
a687059c LW |
1598 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
1599 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
a0d0e21e | 1600 | Fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
a687059c LW |
1601 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
1602 | || | |
1603 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
1604 | ) | |
1605 | if (!do_undump) | |
463ee0b2 | 1606 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1607 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1608 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
1609 | /* not set-id, must be wrapped */ | |
a687059c | 1610 | } |
13281fa4 | 1611 | #endif /* DOSUID */ |
79072805 | 1612 | } |
13281fa4 | 1613 | |
79072805 LW |
1614 | static void |
1615 | find_beginning() | |
1616 | { | |
79072805 | 1617 | register char *s; |
33b78306 LW |
1618 | |
1619 | /* skip forward in input to the real script? */ | |
1620 | ||
463ee0b2 | 1621 | taint_not("-x"); |
33b78306 | 1622 | while (doextract) { |
79072805 | 1623 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
463ee0b2 | 1624 | croak("No Perl script found in input\n"); |
33b78306 LW |
1625 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { |
1626 | ungetc('\n',rsfp); /* to keep line count right */ | |
1627 | doextract = FALSE; | |
1628 | if (s = instr(s,"perl -")) { | |
1629 | s += 6; | |
45d8adaa | 1630 | /*SUPPRESS 530*/ |
33b78306 LW |
1631 | while (s = moreswitches(s)) ; |
1632 | } | |
79072805 | 1633 | if (cddir && chdir(cddir) < 0) |
463ee0b2 | 1634 | croak("Can't chdir to %s",cddir); |
83025b21 LW |
1635 | } |
1636 | } | |
1637 | } | |
1638 | ||
79072805 | 1639 | static void |
748a9306 | 1640 | init_ids() |
352d5a3a | 1641 | { |
748a9306 LW |
1642 | uid = (int)getuid(); |
1643 | euid = (int)geteuid(); | |
1644 | gid = (int)getgid(); | |
1645 | egid = (int)getegid(); | |
1646 | #ifdef VMS | |
1647 | uid |= gid << 16; | |
1648 | euid |= egid << 16; | |
1649 | #endif | |
4633a7c4 | 1650 | tainting |= (uid && (euid != uid || egid != gid)); |
748a9306 | 1651 | } |
79072805 | 1652 | |
748a9306 LW |
1653 | static void |
1654 | init_debugger() | |
1655 | { | |
79072805 | 1656 | curstash = debstash; |
748a9306 | 1657 | dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
79072805 | 1658 | AvREAL_off(dbargs); |
a0d0e21e LW |
1659 | DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
1660 | DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); | |
748a9306 LW |
1661 | DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
1662 | DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); | |
1663 | DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); | |
1664 | DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); | |
79072805 | 1665 | curstash = defstash; |
352d5a3a LW |
1666 | } |
1667 | ||
79072805 | 1668 | static void |
8990e307 | 1669 | init_stacks() |
79072805 LW |
1670 | { |
1671 | stack = newAV(); | |
1672 | mainstack = stack; /* remember in case we switch stacks */ | |
1673 | AvREAL_off(stack); /* not a real array */ | |
a0d0e21e | 1674 | av_extend(stack,127); |
79072805 LW |
1675 | |
1676 | stack_base = AvARRAY(stack); | |
1677 | stack_sp = stack_base; | |
8990e307 | 1678 | stack_max = stack_base + 127; |
79072805 | 1679 | |
a0d0e21e | 1680 | New(54,markstack,64,I32); |
79072805 LW |
1681 | markstack_ptr = markstack; |
1682 | markstack_max = markstack + 64; | |
1683 | ||
a0d0e21e | 1684 | New(54,scopestack,32,I32); |
79072805 LW |
1685 | scopestack_ix = 0; |
1686 | scopestack_max = 32; | |
1687 | ||
1688 | New(54,savestack,128,ANY); | |
1689 | savestack_ix = 0; | |
1690 | savestack_max = 128; | |
1691 | ||
1692 | New(54,retstack,16,OP*); | |
1693 | retstack_ix = 0; | |
1694 | retstack_max = 16; | |
8d063cd8 | 1695 | |
79072805 | 1696 | New(50,cxstack,128,CONTEXT); |
8990e307 LW |
1697 | cxstack_ix = -1; |
1698 | cxstack_max = 128; | |
1699 | ||
1700 | New(50,tmps_stack,128,SV*); | |
1701 | tmps_ix = -1; | |
1702 | tmps_max = 128; | |
1703 | ||
79072805 LW |
1704 | DEBUG( { |
1705 | New(51,debname,128,char); | |
1706 | New(52,debdelim,128,char); | |
1707 | } ) | |
378cc40b | 1708 | } |
33b78306 | 1709 | |
a0d0e21e | 1710 | static FILE *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
79072805 | 1711 | static void |
8990e307 LW |
1712 | init_lexer() |
1713 | { | |
a0d0e21e | 1714 | tmpfp = rsfp; |
8990e307 LW |
1715 | |
1716 | lex_start(linestr); | |
1717 | rsfp = tmpfp; | |
1718 | subname = newSVpv("main",4); | |
1719 | } | |
1720 | ||
1721 | static void | |
79072805 | 1722 | init_predump_symbols() |
45d8adaa | 1723 | { |
93a17b20 | 1724 | GV *tmpgv; |
a0d0e21e | 1725 | GV *othergv; |
79072805 | 1726 | |
85e6fe83 | 1727 | sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); |
79072805 | 1728 | |
85e6fe83 | 1729 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
79072805 | 1730 | SvMULTI_on(stdingv); |
a0d0e21e | 1731 | IoIFP(GvIOp(stdingv)) = stdin; |
adbc6bb1 | 1732 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
a0d0e21e | 1733 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); |
79072805 LW |
1734 | SvMULTI_on(tmpgv); |
1735 | ||
85e6fe83 | 1736 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
79072805 | 1737 | SvMULTI_on(tmpgv); |
a0d0e21e | 1738 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = stdout; |
4633a7c4 | 1739 | setdefout(tmpgv); |
adbc6bb1 | 1740 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
a0d0e21e | 1741 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); |
79072805 LW |
1742 | SvMULTI_on(tmpgv); |
1743 | ||
a0d0e21e LW |
1744 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
1745 | SvMULTI_on(othergv); | |
1746 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = stderr; | |
adbc6bb1 | 1747 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
a0d0e21e | 1748 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
79072805 | 1749 | SvMULTI_on(tmpgv); |
79072805 LW |
1750 | |
1751 | statname = NEWSV(66,0); /* last filename we did stat on */ | |
79072805 | 1752 | } |
33b78306 | 1753 | |
79072805 LW |
1754 | static void |
1755 | init_postdump_symbols(argc,argv,env) | |
1756 | register int argc; | |
1757 | register char **argv; | |
1758 | register char **env; | |
33b78306 | 1759 | { |
79072805 LW |
1760 | char *s; |
1761 | SV *sv; | |
1762 | GV* tmpgv; | |
fe14fcc3 | 1763 | |
79072805 LW |
1764 | argc--,argv++; /* skip name of script */ |
1765 | if (doswitches) { | |
1766 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
1767 | if (!argv[0][1]) | |
1768 | break; | |
1769 | if (argv[0][1] == '-') { | |
1770 | argc--,argv++; | |
1771 | break; | |
1772 | } | |
93a17b20 | 1773 | if (s = strchr(argv[0], '=')) { |
79072805 | 1774 | *s++ = '\0'; |
85e6fe83 | 1775 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
79072805 LW |
1776 | } |
1777 | else | |
85e6fe83 | 1778 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
fe14fcc3 | 1779 | } |
79072805 LW |
1780 | } |
1781 | toptarget = NEWSV(0,0); | |
1782 | sv_upgrade(toptarget, SVt_PVFM); | |
1783 | sv_setpvn(toptarget, "", 0); | |
748a9306 | 1784 | bodytarget = NEWSV(0,0); |
79072805 LW |
1785 | sv_upgrade(bodytarget, SVt_PVFM); |
1786 | sv_setpvn(bodytarget, "", 0); | |
1787 | formtarget = bodytarget; | |
1788 | ||
79072805 | 1789 | tainted = 1; |
85e6fe83 | 1790 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
79072805 LW |
1791 | sv_setpv(GvSV(tmpgv),origfilename); |
1792 | magicname("0", "0", 1); | |
1793 | } | |
85e6fe83 | 1794 | if (tmpgv = gv_fetchpv("\024",TRUE, SVt_PV)) |
79072805 | 1795 | time(&basetime); |
85e6fe83 | 1796 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
79072805 | 1797 | sv_setpv(GvSV(tmpgv),origargv[0]); |
85e6fe83 | 1798 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
79072805 LW |
1799 | SvMULTI_on(argvgv); |
1800 | (void)gv_AVadd(argvgv); | |
1801 | av_clear(GvAVn(argvgv)); | |
1802 | for (; argc > 0; argc--,argv++) { | |
a0d0e21e | 1803 | av_push(GvAVn(argvgv),newSVpv(argv[0],0)); |
79072805 LW |
1804 | } |
1805 | } | |
85e6fe83 | 1806 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
79072805 LW |
1807 | HV *hv; |
1808 | SvMULTI_on(envgv); | |
1809 | hv = GvHVn(envgv); | |
463ee0b2 | 1810 | hv_clear(hv); |
a0d0e21e | 1811 | #ifndef VMS /* VMS doesn't have environ array */ |
4633a7c4 LW |
1812 | /* Note that if the supplied env parameter is actually a copy |
1813 | of the global environ then it may now point to free'd memory | |
1814 | if the environment has been modified since. To avoid this | |
1815 | problem we treat env==NULL as meaning 'use the default' | |
1816 | */ | |
1817 | if (!env) | |
1818 | env = environ; | |
8990e307 | 1819 | if (env != environ) { |
79072805 | 1820 | environ[0] = Nullch; |
8990e307 LW |
1821 | hv_magic(hv, envgv, 'E'); |
1822 | } | |
79072805 | 1823 | for (; *env; env++) { |
93a17b20 | 1824 | if (!(s = strchr(*env,'='))) |
79072805 LW |
1825 | continue; |
1826 | *s++ = '\0'; | |
1827 | sv = newSVpv(s--,0); | |
85e6fe83 | 1828 | sv_magic(sv, sv, 'e', *env, s - *env); |
79072805 LW |
1829 | (void)hv_store(hv, *env, s - *env, sv, 0); |
1830 | *s = '='; | |
fe14fcc3 | 1831 | } |
4550b24a | 1832 | #endif |
1833 | #ifdef DYNAMIC_ENV_FETCH | |
1834 | HvNAME(hv) = savepv(ENV_HV_NAME); | |
1835 | #endif | |
f511e57f | 1836 | hv_magic(hv, envgv, 'E'); |
79072805 | 1837 | } |
79072805 | 1838 | tainted = 0; |
85e6fe83 | 1839 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 LW |
1840 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
1841 | ||
33b78306 | 1842 | } |
34de22dd | 1843 | |
79072805 LW |
1844 | static void |
1845 | init_perllib() | |
34de22dd | 1846 | { |
85e6fe83 LW |
1847 | char *s; |
1848 | if (!tainting) { | |
1849 | s = getenv("PERL5LIB"); | |
1850 | if (s) | |
1851 | incpush(s); | |
1852 | else | |
1853 | incpush(getenv("PERLLIB")); | |
1854 | } | |
34de22dd | 1855 | |
4633a7c4 LW |
1856 | #ifdef APPLLIB_EXP |
1857 | incpush(APPLLIB_EXP); | |
16d20bd9 | 1858 | #endif |
4633a7c4 | 1859 | |
fed7345c AD |
1860 | #ifdef ARCHLIB_EXP |
1861 | incpush(ARCHLIB_EXP); | |
a0d0e21e | 1862 | #endif |
fed7345c AD |
1863 | #ifndef PRIVLIB_EXP |
1864 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" | |
34de22dd | 1865 | #endif |
fed7345c | 1866 | incpush(PRIVLIB_EXP); |
4633a7c4 LW |
1867 | |
1868 | #ifdef SITEARCH_EXP | |
1869 | incpush(SITEARCH_EXP); | |
1870 | #endif | |
1871 | #ifdef SITELIB_EXP | |
1872 | incpush(SITELIB_EXP); | |
1873 | #endif | |
1874 | #ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ | |
1875 | incpush(OLDARCHLIB_EXP); | |
1876 | #endif | |
a0d0e21e | 1877 | |
4633a7c4 LW |
1878 | if (!tainting) |
1879 | incpush("."); | |
34de22dd | 1880 | } |
93a17b20 LW |
1881 | |
1882 | void | |
1883 | calllist(list) | |
1884 | AV* list; | |
1885 | { | |
93a17b20 | 1886 | jmp_buf oldtop; |
a0d0e21e LW |
1887 | STRLEN len; |
1888 | line_t oldline = curcop->cop_line; | |
93a17b20 | 1889 | |
93a17b20 LW |
1890 | Copy(top_env, oldtop, 1, jmp_buf); |
1891 | ||
8990e307 LW |
1892 | while (AvFILL(list) >= 0) { |
1893 | CV *cv = (CV*)av_shift(list); | |
93a17b20 | 1894 | |
8990e307 | 1895 | SAVEFREESV(cv); |
a0d0e21e | 1896 | |
85e6fe83 | 1897 | switch (setjmp(top_env)) { |
748a9306 | 1898 | case 0: { |
4633a7c4 | 1899 | SV* atsv = GvSV(errgv); |
748a9306 LW |
1900 | PUSHMARK(stack_sp); |
1901 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); | |
1902 | (void)SvPV(atsv, len); | |
1903 | if (len) { | |
1904 | Copy(oldtop, top_env, 1, jmp_buf); | |
1905 | curcop = &compiling; | |
1906 | curcop->cop_line = oldline; | |
1907 | if (list == beginav) | |
1908 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); | |
1909 | else | |
1910 | sv_catpv(atsv, "END failed--cleanup aborted"); | |
1911 | croak("%s", SvPVX(atsv)); | |
1912 | } | |
a0d0e21e | 1913 | } |
85e6fe83 LW |
1914 | break; |
1915 | case 1: | |
748a9306 | 1916 | #ifdef VMS |
85e6fe83 | 1917 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
1918 | #else |
1919 | statusvalue = 1; | |
1920 | #endif | |
85e6fe83 LW |
1921 | /* FALL THROUGH */ |
1922 | case 2: | |
1923 | /* my_exit() was called */ | |
1924 | curstash = defstash; | |
1925 | if (endav) | |
1926 | calllist(endav); | |
a0d0e21e LW |
1927 | FREETMPS; |
1928 | Copy(oldtop, top_env, 1, jmp_buf); | |
1929 | curcop = &compiling; | |
1930 | curcop->cop_line = oldline; | |
85e6fe83 LW |
1931 | if (statusvalue) { |
1932 | if (list == beginav) | |
a0d0e21e | 1933 | croak("BEGIN failed--compilation aborted"); |
85e6fe83 | 1934 | else |
a0d0e21e | 1935 | croak("END failed--cleanup aborted"); |
85e6fe83 | 1936 | } |
85e6fe83 LW |
1937 | my_exit(statusvalue); |
1938 | /* NOTREACHED */ | |
1939 | return; | |
1940 | case 3: | |
1941 | if (!restartop) { | |
1942 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 1943 | FREETMPS; |
85e6fe83 LW |
1944 | break; |
1945 | } | |
a0d0e21e LW |
1946 | Copy(oldtop, top_env, 1, jmp_buf); |
1947 | curcop = &compiling; | |
1948 | curcop->cop_line = oldline; | |
1949 | longjmp(top_env, 3); | |
8990e307 | 1950 | } |
93a17b20 LW |
1951 | } |
1952 | ||
1953 | Copy(oldtop, top_env, 1, jmp_buf); | |
1954 | } | |
1955 |