Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* perl.c |
2 | * | |
4633a7c4 | 3 | * Copyright (c) 1987-1995 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; |
79072805 LW |
102 | dlmax = 128; |
103 | laststatval = -1; | |
104 | laststype = OP_STAT; | |
105 | maxscream = -1; | |
106 | maxsysfd = MAXSYSFD; | |
107 | nrs = "\n"; | |
108 | nrschar = '\n'; | |
109 | nrslen = 1; | |
110 | rs = "\n"; | |
111 | rschar = '\n'; | |
112 | rsfp = Nullfp; | |
113 | rslen = 1; | |
463ee0b2 | 114 | statname = Nullsv; |
79072805 | 115 | tmps_floor = -1; |
79072805 LW |
116 | #endif |
117 | ||
748a9306 | 118 | init_ids(); |
a0d0e21e | 119 | sprintf(patchlevel, "%5.3f", 5.0 + (PATCHLEVEL / 1000.0)); |
79072805 LW |
120 | |
121 | fdpid = newAV(); /* for remembering popen pids by fd */ | |
463ee0b2 | 122 | pidstatus = newHV();/* for remembering status of dead pids */ |
8990e307 LW |
123 | |
124 | init_stacks(); | |
125 | ENTER; | |
79072805 LW |
126 | } |
127 | ||
128 | void | |
748a9306 | 129 | perl_destruct(sv_interp) |
93a17b20 | 130 | register PerlInterpreter *sv_interp; |
79072805 | 131 | { |
748a9306 | 132 | int destruct_level; /* 0=none, 1=full, 2=full with checks */ |
8990e307 | 133 | I32 last_sv_count; |
a0d0e21e | 134 | HV *hv; |
8990e307 | 135 | |
79072805 LW |
136 | if (!(curinterp = sv_interp)) |
137 | return; | |
748a9306 LW |
138 | |
139 | destruct_level = perl_destruct_level; | |
4633a7c4 LW |
140 | #ifdef DEBUGGING |
141 | { | |
142 | char *s; | |
143 | if (s = getenv("PERL_DESTRUCT_LEVEL")) | |
144 | destruct_level = atoi(s); | |
145 | } | |
146 | #endif | |
147 | ||
8990e307 | 148 | LEAVE; |
a0d0e21e LW |
149 | FREETMPS; |
150 | ||
151 | if (sv_objcount) { | |
152 | /* We must account for everything. First the syntax tree. */ | |
153 | if (main_root) { | |
154 | curpad = AvARRAY(comppad); | |
155 | op_free(main_root); | |
156 | main_root = 0; | |
157 | } | |
158 | } | |
159 | if (sv_objcount) { | |
160 | /* | |
161 | * Try to destruct global references. We do this first so that the | |
162 | * destructors and destructees still exist. Some sv's might remain. | |
163 | * Non-referenced objects are on their own. | |
164 | */ | |
165 | ||
166 | dirty = TRUE; | |
167 | sv_clean_objs(); | |
8990e307 LW |
168 | } |
169 | ||
a0d0e21e | 170 | if (destruct_level == 0){ |
8990e307 | 171 | |
a0d0e21e LW |
172 | DEBUG_P(debprofdump()); |
173 | ||
174 | /* The exit() function will do everything that needs doing. */ | |
175 | return; | |
176 | } | |
177 | ||
178 | /* Prepare to destruct main symbol table. */ | |
179 | hv = defstash; | |
85e6fe83 | 180 | defstash = 0; |
a0d0e21e LW |
181 | SvREFCNT_dec(hv); |
182 | ||
183 | FREETMPS; | |
184 | if (destruct_level >= 2) { | |
185 | if (scopestack_ix != 0) | |
186 | warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); | |
187 | if (savestack_ix != 0) | |
188 | warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); | |
189 | if (tmps_floor != -1) | |
190 | warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); | |
191 | if (cxstack_ix != -1) | |
192 | warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); | |
193 | } | |
8990e307 LW |
194 | |
195 | /* Now absolutely destruct everything, somehow or other, loops or no. */ | |
8990e307 LW |
196 | last_sv_count = 0; |
197 | while (sv_count != 0 && sv_count != last_sv_count) { | |
198 | last_sv_count = sv_count; | |
199 | sv_clean_all(); | |
200 | } | |
201 | if (sv_count != 0) | |
202 | warn("Scalars leaked: %d\n", sv_count); | |
4633a7c4 | 203 | sv_free_arenas(); |
a0d0e21e LW |
204 | |
205 | DEBUG_P(debprofdump()); | |
79072805 LW |
206 | } |
207 | ||
208 | void | |
209 | perl_free(sv_interp) | |
93a17b20 | 210 | PerlInterpreter *sv_interp; |
79072805 LW |
211 | { |
212 | if (!(curinterp = sv_interp)) | |
213 | return; | |
214 | Safefree(sv_interp); | |
215 | } | |
ecfc5424 | 216 | #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) |
a0d0e21e LW |
217 | char *getenv _((char *)); /* Usually in <stdlib.h> */ |
218 | #endif | |
79072805 LW |
219 | |
220 | int | |
a0d0e21e | 221 | perl_parse(sv_interp, xsinit, argc, argv, env) |
93a17b20 | 222 | PerlInterpreter *sv_interp; |
a0d0e21e LW |
223 | void (*xsinit)_((void)); |
224 | int argc; | |
225 | char **argv; | |
79072805 | 226 | char **env; |
8d063cd8 | 227 | { |
79072805 | 228 | register SV *sv; |
8d063cd8 | 229 | register char *s; |
45d8adaa | 230 | char *scriptname; |
a0d0e21e | 231 | VOL bool dosearch = FALSE; |
13281fa4 | 232 | char *validarg = ""; |
748a9306 | 233 | AV* comppadlist; |
8d063cd8 | 234 | |
a687059c LW |
235 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
236 | #ifdef IAMSUID | |
237 | #undef IAMSUID | |
463ee0b2 | 238 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
a687059c LW |
239 | setuid perl scripts securely.\n"); |
240 | #endif | |
241 | #endif | |
242 | ||
79072805 LW |
243 | if (!(curinterp = sv_interp)) |
244 | return 255; | |
245 | ||
ac58e20f LW |
246 | origargv = argv; |
247 | origargc = argc; | |
a0d0e21e | 248 | #ifndef VMS /* VMS doesn't have environ array */ |
fe14fcc3 | 249 | origenviron = environ; |
a0d0e21e LW |
250 | #endif |
251 | ||
252 | if (do_undump) { | |
253 | ||
254 | /* Come here if running an undumped a.out. */ | |
255 | ||
256 | origfilename = savepv(argv[0]); | |
257 | do_undump = FALSE; | |
258 | cxstack_ix = -1; /* start label stack again */ | |
748a9306 | 259 | init_ids(); |
a0d0e21e LW |
260 | init_postdump_symbols(argc,argv,env); |
261 | return 0; | |
262 | } | |
263 | ||
264 | if (main_root) | |
265 | op_free(main_root); | |
266 | main_root = 0; | |
79072805 LW |
267 | |
268 | switch (setjmp(top_env)) { | |
269 | case 1: | |
748a9306 | 270 | #ifdef VMS |
79072805 | 271 | statusvalue = 255; |
748a9306 LW |
272 | #else |
273 | statusvalue = 1; | |
274 | #endif | |
79072805 | 275 | case 2: |
8990e307 LW |
276 | curstash = defstash; |
277 | if (endav) | |
278 | calllist(endav); | |
79072805 LW |
279 | return(statusvalue); /* my_exit() was called */ |
280 | case 3: | |
281 | fprintf(stderr, "panic: top_env\n"); | |
8990e307 | 282 | return 1; |
79072805 LW |
283 | } |
284 | ||
79072805 LW |
285 | sv_setpvn(linestr,"",0); |
286 | sv = newSVpv("",0); /* first used for -I flags */ | |
8990e307 | 287 | SAVEFREESV(sv); |
79072805 | 288 | init_main_stash(); |
33b78306 | 289 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
290 | if (argv[0][0] != '-' || !argv[0][1]) |
291 | break; | |
13281fa4 LW |
292 | #ifdef DOSUID |
293 | if (*validarg) | |
294 | validarg = " PHOOEY "; | |
295 | else | |
296 | validarg = argv[0]; | |
297 | #endif | |
298 | s = argv[0]+1; | |
8d063cd8 | 299 | reswitch: |
13281fa4 | 300 | switch (*s) { |
27e2fb84 | 301 | case '0': |
2304df62 | 302 | case 'F': |
378cc40b | 303 | case 'a': |
33b78306 | 304 | case 'c': |
a687059c | 305 | case 'd': |
8d063cd8 | 306 | case 'D': |
4633a7c4 | 307 | case 'h': |
33b78306 | 308 | case 'i': |
fe14fcc3 | 309 | case 'l': |
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; |
33b78306 LW |
365 | case 'x': |
366 | doextract = TRUE; | |
13281fa4 | 367 | s++; |
33b78306 | 368 | if (*s) |
a0d0e21e | 369 | cddir = savepv(s); |
33b78306 | 370 | break; |
8d063cd8 LW |
371 | case '-': |
372 | argc--,argv++; | |
373 | goto switch_end; | |
374 | case 0: | |
375 | break; | |
376 | default: | |
463ee0b2 | 377 | croak("Unrecognized switch: -%s",s); |
8d063cd8 LW |
378 | } |
379 | } | |
380 | switch_end: | |
45d8adaa | 381 | scriptname = argv[0]; |
8d063cd8 | 382 | if (e_fp) { |
83025b21 | 383 | if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp)) |
2304df62 | 384 | croak("Can't write to temp file for -e: %s", Strerror(errno)); |
8d063cd8 | 385 | argc++,argv--; |
45d8adaa | 386 | scriptname = e_tmpname; |
8d063cd8 | 387 | } |
79072805 LW |
388 | else if (scriptname == Nullch) { |
389 | #ifdef MSDOS | |
390 | if ( isatty(fileno(stdin)) ) | |
391 | moreswitches("v"); | |
fe14fcc3 | 392 | #endif |
79072805 LW |
393 | scriptname = "-"; |
394 | } | |
fe14fcc3 | 395 | |
79072805 | 396 | init_perllib(); |
8d063cd8 | 397 | |
79072805 | 398 | open_script(scriptname,dosearch,sv); |
8d063cd8 | 399 | |
79072805 | 400 | validate_suid(validarg); |
378cc40b | 401 | |
79072805 LW |
402 | if (doextract) |
403 | find_beginning(); | |
404 | ||
748a9306 LW |
405 | compcv = (CV*)NEWSV(1104,0); |
406 | sv_upgrade((SV *)compcv, SVt_PVCV); | |
407 | ||
79072805 LW |
408 | pad = newAV(); |
409 | comppad = pad; | |
410 | av_push(comppad, Nullsv); | |
411 | curpad = AvARRAY(comppad); | |
93a17b20 | 412 | padname = newAV(); |
8990e307 LW |
413 | comppad_name = padname; |
414 | comppad_name_fill = 0; | |
415 | min_intro_pending = 0; | |
79072805 LW |
416 | padix = 0; |
417 | ||
748a9306 LW |
418 | comppadlist = newAV(); |
419 | AvREAL_off(comppadlist); | |
8e07c86e AD |
420 | av_store(comppadlist, 0, (SV*)comppad_name); |
421 | av_store(comppadlist, 1, (SV*)comppad); | |
748a9306 LW |
422 | CvPADLIST(compcv) = comppadlist; |
423 | ||
a0d0e21e LW |
424 | if (xsinit) |
425 | (*xsinit)(); /* in case linked C routines want magical variables */ | |
748a9306 LW |
426 | #ifdef VMS |
427 | init_os_extras(); | |
428 | #endif | |
93a17b20 | 429 | |
93a17b20 | 430 | init_predump_symbols(); |
8990e307 LW |
431 | if (!do_undump) |
432 | init_postdump_symbols(argc,argv,env); | |
93a17b20 | 433 | |
79072805 LW |
434 | init_lexer(); |
435 | ||
436 | /* now parse the script */ | |
437 | ||
438 | error_count = 0; | |
439 | if (yyparse() || error_count) { | |
440 | if (minus_c) | |
463ee0b2 | 441 | croak("%s had compilation errors.\n", origfilename); |
79072805 | 442 | else { |
463ee0b2 | 443 | croak("Execution of %s aborted due to compilation errors.\n", |
79072805 | 444 | origfilename); |
378cc40b | 445 | } |
79072805 LW |
446 | } |
447 | curcop->cop_line = 0; | |
448 | curstash = defstash; | |
449 | preprocess = FALSE; | |
450 | if (e_fp) { | |
451 | e_fp = Nullfp; | |
452 | (void)UNLINK(e_tmpname); | |
378cc40b | 453 | } |
a687059c | 454 | |
93a17b20 | 455 | /* now that script is parsed, we can modify record separator */ |
a687059c | 456 | |
93a17b20 LW |
457 | rs = nrs; |
458 | rslen = nrslen; | |
459 | rschar = nrschar; | |
460 | rspara = (nrslen == 2); | |
85e6fe83 | 461 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs, rslen); |
45d8adaa | 462 | |
79072805 LW |
463 | if (do_undump) |
464 | my_unexec(); | |
465 | ||
8990e307 LW |
466 | if (dowarn) |
467 | gv_check(defstash); | |
468 | ||
a0d0e21e LW |
469 | LEAVE; |
470 | FREETMPS; | |
471 | ENTER; | |
472 | restartop = 0; | |
79072805 LW |
473 | return 0; |
474 | } | |
475 | ||
476 | int | |
477 | perl_run(sv_interp) | |
93a17b20 | 478 | PerlInterpreter *sv_interp; |
79072805 LW |
479 | { |
480 | if (!(curinterp = sv_interp)) | |
481 | return 255; | |
482 | switch (setjmp(top_env)) { | |
483 | case 1: | |
484 | cxstack_ix = -1; /* start context stack again */ | |
485 | break; | |
486 | case 2: | |
487 | curstash = defstash; | |
93a17b20 LW |
488 | if (endav) |
489 | calllist(endav); | |
a0d0e21e | 490 | FREETMPS; |
93a17b20 | 491 | return(statusvalue); /* my_exit() was called */ |
79072805 LW |
492 | case 3: |
493 | if (!restartop) { | |
494 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 495 | FREETMPS; |
8990e307 | 496 | return 1; |
83025b21 | 497 | } |
79072805 LW |
498 | if (stack != mainstack) { |
499 | dSP; | |
500 | SWITCHSTACK(stack, mainstack); | |
501 | } | |
502 | break; | |
8d063cd8 | 503 | } |
79072805 LW |
504 | |
505 | if (!restartop) { | |
506 | DEBUG_x(dump_all()); | |
507 | DEBUG(fprintf(stderr,"\nEXECUTING...\n\n")); | |
508 | ||
509 | if (minus_c) { | |
510 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
511 | my_exit(0); | |
512 | } | |
a0d0e21e LW |
513 | if (perldb && DBsingle) |
514 | sv_setiv(DBsingle, 1); | |
45d8adaa | 515 | } |
79072805 LW |
516 | |
517 | /* do it */ | |
518 | ||
519 | if (restartop) { | |
520 | op = restartop; | |
521 | restartop = 0; | |
522 | run(); | |
523 | } | |
524 | else if (main_start) { | |
525 | op = main_start; | |
526 | run(); | |
527 | } | |
79072805 LW |
528 | |
529 | my_exit(0); | |
a0d0e21e | 530 | return 0; |
79072805 LW |
531 | } |
532 | ||
533 | void | |
534 | my_exit(status) | |
748a9306 | 535 | U32 status; |
79072805 | 536 | { |
a0d0e21e LW |
537 | register CONTEXT *cx; |
538 | I32 gimme; | |
539 | SV **newsp; | |
540 | ||
748a9306 | 541 | statusvalue = FIXSTATUS(status); |
a0d0e21e LW |
542 | if (cxstack_ix >= 0) { |
543 | if (cxstack_ix > 0) | |
544 | dounwind(0); | |
545 | POPBLOCK(cx,curpm); | |
546 | LEAVE; | |
547 | } | |
79072805 LW |
548 | longjmp(top_env, 2); |
549 | } | |
550 | ||
a0d0e21e LW |
551 | SV* |
552 | perl_get_sv(name, create) | |
553 | char* name; | |
554 | I32 create; | |
555 | { | |
556 | GV* gv = gv_fetchpv(name, create, SVt_PV); | |
557 | if (gv) | |
558 | return GvSV(gv); | |
559 | return Nullsv; | |
560 | } | |
561 | ||
562 | AV* | |
563 | perl_get_av(name, create) | |
564 | char* name; | |
565 | I32 create; | |
566 | { | |
567 | GV* gv = gv_fetchpv(name, create, SVt_PVAV); | |
568 | if (create) | |
569 | return GvAVn(gv); | |
570 | if (gv) | |
571 | return GvAV(gv); | |
572 | return Nullav; | |
573 | } | |
574 | ||
575 | HV* | |
576 | perl_get_hv(name, create) | |
577 | char* name; | |
578 | I32 create; | |
579 | { | |
580 | GV* gv = gv_fetchpv(name, create, SVt_PVHV); | |
581 | if (create) | |
582 | return GvHVn(gv); | |
583 | if (gv) | |
584 | return GvHV(gv); | |
585 | return Nullhv; | |
586 | } | |
587 | ||
588 | CV* | |
589 | perl_get_cv(name, create) | |
590 | char* name; | |
591 | I32 create; | |
592 | { | |
593 | GV* gv = gv_fetchpv(name, create, SVt_PVCV); | |
594 | if (create && !GvCV(gv)) | |
595 | return newSUB(start_subparse(), | |
596 | newSVOP(OP_CONST, 0, newSVpv(name,0)), | |
4633a7c4 | 597 | Nullop, |
a0d0e21e LW |
598 | Nullop); |
599 | if (gv) | |
600 | return GvCV(gv); | |
601 | return Nullcv; | |
602 | } | |
603 | ||
79072805 LW |
604 | /* Be sure to refetch the stack pointer after calling these routines. */ |
605 | ||
a0d0e21e LW |
606 | I32 |
607 | perl_call_argv(subname, flags, argv) | |
8990e307 | 608 | char *subname; |
a0d0e21e LW |
609 | I32 flags; /* See G_* flags in cop.h */ |
610 | register char **argv; /* null terminated arg list */ | |
8990e307 | 611 | { |
a0d0e21e | 612 | dSP; |
8990e307 | 613 | |
a0d0e21e LW |
614 | PUSHMARK(sp); |
615 | if (argv) { | |
8990e307 | 616 | while (*argv) { |
a0d0e21e | 617 | XPUSHs(sv_2mortal(newSVpv(*argv,0))); |
8990e307 LW |
618 | argv++; |
619 | } | |
a0d0e21e | 620 | PUTBACK; |
8990e307 | 621 | } |
a0d0e21e | 622 | return perl_call_pv(subname, flags); |
8990e307 LW |
623 | } |
624 | ||
a0d0e21e LW |
625 | I32 |
626 | perl_call_pv(subname, flags) | |
627 | char *subname; /* name of the subroutine */ | |
628 | I32 flags; /* See G_* flags in cop.h */ | |
629 | { | |
630 | return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); | |
631 | } | |
632 | ||
633 | I32 | |
634 | perl_call_method(methname, flags) | |
635 | char *methname; /* name of the subroutine */ | |
636 | I32 flags; /* See G_* flags in cop.h */ | |
637 | { | |
638 | dSP; | |
639 | OP myop; | |
640 | if (!op) | |
641 | op = &myop; | |
642 | XPUSHs(sv_2mortal(newSVpv(methname,0))); | |
643 | PUTBACK; | |
644 | pp_method(); | |
645 | return perl_call_sv(*stack_sp--, flags); | |
646 | } | |
647 | ||
648 | /* May be called with any of a CV, a GV, or an SV containing the name. */ | |
649 | I32 | |
650 | perl_call_sv(sv, flags) | |
651 | SV* sv; | |
652 | I32 flags; /* See G_* flags in cop.h */ | |
653 | { | |
654 | LOGOP myop; /* fake syntax tree node */ | |
655 | SV** sp = stack_sp; | |
656 | I32 oldmark = TOPMARK; | |
657 | I32 retval; | |
658 | jmp_buf oldtop; | |
659 | I32 oldscope; | |
660 | ||
661 | if (flags & G_DISCARD) { | |
662 | ENTER; | |
663 | SAVETMPS; | |
664 | } | |
665 | ||
666 | SAVESPTR(op); | |
667 | op = (OP*)&myop; | |
668 | Zero(op, 1, LOGOP); | |
669 | EXTEND(stack_sp, 1); | |
670 | *++stack_sp = sv; | |
671 | oldscope = scopestack_ix; | |
672 | ||
673 | if (!(flags & G_NOARGS)) | |
674 | myop.op_flags = OPf_STACKED; | |
675 | myop.op_next = Nullop; | |
676 | myop.op_flags |= OPf_KNOW; | |
677 | if (flags & G_ARRAY) | |
678 | myop.op_flags |= OPf_LIST; | |
679 | ||
680 | if (flags & G_EVAL) { | |
681 | Copy(top_env, oldtop, 1, jmp_buf); | |
682 | ||
683 | cLOGOP->op_other = op; | |
684 | markstack_ptr--; | |
4633a7c4 LW |
685 | /* we're trying to emulate pp_entertry() here */ |
686 | { | |
687 | register CONTEXT *cx; | |
688 | I32 gimme = GIMME; | |
689 | ||
690 | ENTER; | |
691 | SAVETMPS; | |
692 | ||
693 | push_return(op->op_next); | |
694 | PUSHBLOCK(cx, CXt_EVAL, stack_sp); | |
695 | PUSHEVAL(cx, 0, 0); | |
696 | eval_root = op; /* Only needed so that goto works right. */ | |
697 | ||
698 | in_eval = 1; | |
699 | if (flags & G_KEEPERR) | |
700 | in_eval |= 4; | |
701 | else | |
702 | sv_setpv(GvSV(errgv),""); | |
703 | } | |
a0d0e21e LW |
704 | markstack_ptr++; |
705 | ||
706 | restart: | |
707 | switch (setjmp(top_env)) { | |
708 | case 0: | |
709 | break; | |
710 | case 1: | |
748a9306 | 711 | #ifdef VMS |
a0d0e21e | 712 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
713 | #else |
714 | statusvalue = 1; | |
715 | #endif | |
a0d0e21e LW |
716 | /* FALL THROUGH */ |
717 | case 2: | |
718 | /* my_exit() was called */ | |
719 | curstash = defstash; | |
720 | FREETMPS; | |
721 | Copy(oldtop, top_env, 1, jmp_buf); | |
722 | if (statusvalue) | |
723 | croak("Callback called exit"); | |
724 | my_exit(statusvalue); | |
725 | /* NOTREACHED */ | |
726 | case 3: | |
727 | if (restartop) { | |
728 | op = restartop; | |
729 | restartop = 0; | |
730 | goto restart; | |
731 | } | |
732 | stack_sp = stack_base + oldmark; | |
733 | if (flags & G_ARRAY) | |
734 | retval = 0; | |
735 | else { | |
736 | retval = 1; | |
737 | *++stack_sp = &sv_undef; | |
738 | } | |
739 | goto cleanup; | |
740 | } | |
741 | } | |
742 | ||
743 | if (op == (OP*)&myop) | |
744 | op = pp_entersub(); | |
745 | if (op) | |
746 | run(); | |
747 | retval = stack_sp - (stack_base + oldmark); | |
4633a7c4 LW |
748 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) |
749 | sv_setpv(GvSV(errgv),""); | |
a0d0e21e LW |
750 | |
751 | cleanup: | |
752 | if (flags & G_EVAL) { | |
753 | if (scopestack_ix > oldscope) { | |
a0a2876f LW |
754 | SV **newsp; |
755 | PMOP *newpm; | |
756 | I32 gimme; | |
757 | register CONTEXT *cx; | |
758 | I32 optype; | |
759 | ||
760 | POPBLOCK(cx,newpm); | |
761 | POPEVAL(cx); | |
762 | pop_return(); | |
763 | curpm = newpm; | |
764 | LEAVE; | |
a0d0e21e LW |
765 | } |
766 | Copy(oldtop, top_env, 1, jmp_buf); | |
767 | } | |
768 | if (flags & G_DISCARD) { | |
769 | stack_sp = stack_base + oldmark; | |
770 | retval = 0; | |
771 | FREETMPS; | |
772 | LEAVE; | |
773 | } | |
774 | return retval; | |
775 | } | |
776 | ||
4633a7c4 | 777 | /* Eval a string. */ |
8990e307 | 778 | |
a0d0e21e | 779 | I32 |
4633a7c4 | 780 | perl_eval_sv(sv, flags) |
8990e307 | 781 | SV* sv; |
4633a7c4 | 782 | I32 flags; /* See G_* flags in cop.h */ |
a0d0e21e LW |
783 | { |
784 | UNOP myop; /* fake syntax tree node */ | |
4633a7c4 LW |
785 | SV** sp = stack_sp; |
786 | I32 oldmark = sp - stack_base; | |
787 | I32 retval; | |
788 | jmp_buf oldtop; | |
789 | I32 oldscope; | |
79072805 | 790 | |
4633a7c4 LW |
791 | if (flags & G_DISCARD) { |
792 | ENTER; | |
793 | SAVETMPS; | |
794 | } | |
795 | ||
79072805 | 796 | SAVESPTR(op); |
79072805 | 797 | op = (OP*)&myop; |
a0d0e21e | 798 | Zero(op, 1, UNOP); |
4633a7c4 LW |
799 | EXTEND(stack_sp, 1); |
800 | *++stack_sp = sv; | |
801 | oldscope = scopestack_ix; | |
79072805 | 802 | |
4633a7c4 LW |
803 | if (!(flags & G_NOARGS)) |
804 | myop.op_flags = OPf_STACKED; | |
79072805 | 805 | myop.op_next = Nullop; |
4633a7c4 LW |
806 | myop.op_flags |= OPf_KNOW; |
807 | if (flags & G_ARRAY) | |
808 | myop.op_flags |= OPf_LIST; | |
79072805 | 809 | |
4633a7c4 LW |
810 | Copy(top_env, oldtop, 1, jmp_buf); |
811 | ||
812 | restart: | |
813 | switch (setjmp(top_env)) { | |
814 | case 0: | |
815 | break; | |
816 | case 1: | |
817 | #ifdef VMS | |
818 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ | |
819 | #else | |
820 | statusvalue = 1; | |
821 | #endif | |
822 | /* FALL THROUGH */ | |
823 | case 2: | |
824 | /* my_exit() was called */ | |
825 | curstash = defstash; | |
826 | FREETMPS; | |
827 | Copy(oldtop, top_env, 1, jmp_buf); | |
828 | if (statusvalue) | |
829 | croak("Callback called exit"); | |
830 | my_exit(statusvalue); | |
831 | /* NOTREACHED */ | |
832 | case 3: | |
833 | if (restartop) { | |
834 | op = restartop; | |
835 | restartop = 0; | |
836 | goto restart; | |
837 | } | |
838 | stack_sp = stack_base + oldmark; | |
839 | if (flags & G_ARRAY) | |
840 | retval = 0; | |
841 | else { | |
842 | retval = 1; | |
843 | *++stack_sp = &sv_undef; | |
844 | } | |
845 | goto cleanup; | |
846 | } | |
847 | ||
848 | if (op == (OP*)&myop) | |
849 | op = pp_entereval(); | |
850 | if (op) | |
463ee0b2 | 851 | run(); |
4633a7c4 LW |
852 | retval = stack_sp - (stack_base + oldmark); |
853 | if ((flags & G_EVAL) && !(flags & G_KEEPERR)) | |
854 | sv_setpv(GvSV(errgv),""); | |
855 | ||
856 | cleanup: | |
857 | Copy(oldtop, top_env, 1, jmp_buf); | |
858 | if (flags & G_DISCARD) { | |
859 | stack_sp = stack_base + oldmark; | |
860 | retval = 0; | |
861 | FREETMPS; | |
862 | LEAVE; | |
863 | } | |
864 | return retval; | |
865 | } | |
866 | ||
867 | /* Require a module. */ | |
868 | ||
869 | void | |
870 | perl_require_pv(pv) | |
871 | char* pv; | |
872 | { | |
873 | SV* sv = sv_newmortal(); | |
874 | sv_setpv(sv, "require '"); | |
875 | sv_catpv(sv, pv); | |
876 | sv_catpv(sv, "'"); | |
877 | perl_eval_sv(sv, G_DISCARD); | |
79072805 LW |
878 | } |
879 | ||
79072805 | 880 | void |
79072805 LW |
881 | magicname(sym,name,namlen) |
882 | char *sym; | |
883 | char *name; | |
884 | I32 namlen; | |
885 | { | |
886 | register GV *gv; | |
887 | ||
85e6fe83 | 888 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
79072805 LW |
889 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
890 | } | |
891 | ||
748a9306 LW |
892 | #if defined(DOSISH) |
893 | # define PERLLIB_SEP ';' | |
79072805 | 894 | #else |
232e078e AD |
895 | # if defined(VMS) |
896 | # define PERLLIB_SEP '|' | |
897 | # else | |
748a9306 | 898 | # define PERLLIB_SEP ':' |
232e078e | 899 | # endif |
79072805 LW |
900 | #endif |
901 | ||
902 | static void | |
903 | incpush(p) | |
904 | char *p; | |
905 | { | |
906 | char *s; | |
907 | ||
908 | if (!p) | |
909 | return; | |
910 | ||
911 | /* Break at all separators */ | |
912 | while (*p) { | |
913 | /* First, skip any consecutive separators */ | |
914 | while ( *p == PERLLIB_SEP ) { | |
915 | /* Uncomment the next line for PATH semantics */ | |
a0d0e21e | 916 | /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ |
79072805 LW |
917 | p++; |
918 | } | |
93a17b20 | 919 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
a0d0e21e | 920 | av_push(GvAVn(incgv), newSVpv(p, (STRLEN)(s - p))); |
79072805 LW |
921 | p = s + 1; |
922 | } else { | |
a0d0e21e | 923 | av_push(GvAVn(incgv), newSVpv(p, 0)); |
79072805 LW |
924 | break; |
925 | } | |
926 | } | |
927 | } | |
928 | ||
4633a7c4 LW |
929 | void |
930 | usage(name) | |
931 | char *name; | |
932 | { | |
933 | printf("\nUsage: %s [switches] [filename] [arguments]\n",name); | |
934 | printf("\n -0[octal] specify record separator (\\0, if no argument)"); | |
935 | printf("\n -a autosplit mode with -n or -p"); | |
936 | printf("\n -c check syntax only (runs BEGIN and END blocks)"); | |
937 | printf("\n -d run scripts under debugger"); | |
938 | printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)"); | |
939 | printf("\n -e command one line of script, multiple -e options are allowed"); | |
940 | printf("\n [filename] can be ommitted when -e is used"); | |
941 | printf("\n -F regexp regular expression for autosplit (-a)"); | |
942 | printf("\n -i[extension] edit <> files in place (make backup if extension supplied)"); | |
943 | printf("\n -Idirectory specify include directory (may be used more then once)"); | |
944 | printf("\n -l[octal] enable line ending processing, specifies line teminator"); | |
945 | printf("\n -n assume 'while (<>) { ... }' loop arround your script"); | |
946 | printf("\n -p assume loop like -n but print line also like sed"); | |
947 | printf("\n -P run script through C preprocessor before compilation"); | |
948 | #ifdef OS2 | |
949 | printf("\n -R enable REXX variable pool"); | |
950 | #endif | |
951 | printf("\n -s enable some switch parsing for switches after script name"); | |
952 | printf("\n -S look for the script using PATH environment variable"); | |
953 | printf("\n -T turn on tainting checks"); | |
954 | printf("\n -u dump core after parsing script"); | |
955 | printf("\n -U allow unsafe operations"); | |
956 | printf("\n -v print version number and patchlevel of perl"); | |
957 | printf("\n -w turn warnings on for compilation of your script"); | |
958 | printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); | |
959 | } | |
960 | ||
79072805 LW |
961 | /* This routine handles any switches that can be given during run */ |
962 | ||
963 | char * | |
964 | moreswitches(s) | |
965 | char *s; | |
966 | { | |
967 | I32 numlen; | |
968 | ||
969 | switch (*s) { | |
970 | case '0': | |
971 | nrschar = scan_oct(s, 4, &numlen); | |
a0d0e21e | 972 | nrs = savepvn("\n",1); |
79072805 LW |
973 | *nrs = nrschar; |
974 | if (nrschar > 0377) { | |
975 | nrslen = 0; | |
976 | nrs = ""; | |
977 | } | |
978 | else if (!nrschar && numlen >= 2) { | |
979 | nrslen = 2; | |
980 | nrs = "\n\n"; | |
981 | nrschar = '\n'; | |
982 | } | |
983 | return s + numlen; | |
2304df62 AD |
984 | case 'F': |
985 | minus_F = TRUE; | |
a0d0e21e | 986 | splitstr = savepv(s + 1); |
2304df62 AD |
987 | s += strlen(s); |
988 | return s; | |
79072805 LW |
989 | case 'a': |
990 | minus_a = TRUE; | |
991 | s++; | |
992 | return s; | |
993 | case 'c': | |
994 | minus_c = TRUE; | |
995 | s++; | |
996 | return s; | |
997 | case 'd': | |
463ee0b2 | 998 | taint_not("-d"); |
4633a7c4 LW |
999 | s++; |
1000 | if (*s == ':') { | |
1001 | sprintf(buf, "use Devel::%s;", ++s); | |
1002 | s += strlen(s); | |
1003 | my_setenv("PERL5DB",buf); | |
1004 | } | |
a0d0e21e LW |
1005 | if (!perldb) { |
1006 | perldb = TRUE; | |
1007 | init_debugger(); | |
1008 | } | |
79072805 LW |
1009 | return s; |
1010 | case 'D': | |
1011 | #ifdef DEBUGGING | |
463ee0b2 | 1012 | taint_not("-D"); |
79072805 | 1013 | if (isALPHA(s[1])) { |
8990e307 | 1014 | static char debopts[] = "psltocPmfrxuLHXD"; |
79072805 LW |
1015 | char *d; |
1016 | ||
93a17b20 | 1017 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
79072805 LW |
1018 | debug |= 1 << (d - debopts); |
1019 | } | |
1020 | else { | |
1021 | debug = atoi(s+1); | |
1022 | for (s++; isDIGIT(*s); s++) ; | |
1023 | } | |
8990e307 | 1024 | debug |= 0x80000000; |
79072805 LW |
1025 | #else |
1026 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
a0d0e21e | 1027 | for (s++; isALNUM(*s); s++) ; |
79072805 LW |
1028 | #endif |
1029 | /*SUPPRESS 530*/ | |
1030 | return s; | |
4633a7c4 LW |
1031 | case 'h': |
1032 | usage(origargv[0]); | |
1033 | exit(0); | |
79072805 LW |
1034 | case 'i': |
1035 | if (inplace) | |
1036 | Safefree(inplace); | |
a0d0e21e | 1037 | inplace = savepv(s+1); |
79072805 LW |
1038 | /*SUPPRESS 530*/ |
1039 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
1040 | *s = '\0'; | |
1041 | break; | |
1042 | case 'I': | |
463ee0b2 | 1043 | taint_not("-I"); |
79072805 | 1044 | if (*++s) { |
748a9306 LW |
1045 | char *e; |
1046 | for (e = s; *e && !isSPACE(*e); e++) ; | |
1047 | av_push(GvAVn(incgv),newSVpv(s,e-s)); | |
1048 | if (*e) | |
1049 | return e; | |
79072805 LW |
1050 | } |
1051 | else | |
463ee0b2 | 1052 | croak("No space allowed after -I"); |
79072805 LW |
1053 | break; |
1054 | case 'l': | |
1055 | minus_l = TRUE; | |
1056 | s++; | |
a0d0e21e LW |
1057 | if (ors) |
1058 | Safefree(ors); | |
79072805 | 1059 | if (isDIGIT(*s)) { |
a0d0e21e | 1060 | ors = savepv("\n"); |
79072805 LW |
1061 | orslen = 1; |
1062 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); | |
1063 | s += numlen; | |
1064 | } | |
1065 | else { | |
a0d0e21e | 1066 | ors = savepvn(nrs,nrslen); |
79072805 LW |
1067 | orslen = nrslen; |
1068 | } | |
1069 | return s; | |
1070 | case 'n': | |
1071 | minus_n = TRUE; | |
1072 | s++; | |
1073 | return s; | |
1074 | case 'p': | |
1075 | minus_p = TRUE; | |
1076 | s++; | |
1077 | return s; | |
1078 | case 's': | |
463ee0b2 | 1079 | taint_not("-s"); |
79072805 LW |
1080 | doswitches = TRUE; |
1081 | s++; | |
1082 | return s; | |
463ee0b2 LW |
1083 | case 'T': |
1084 | tainting = TRUE; | |
1085 | s++; | |
1086 | return s; | |
79072805 LW |
1087 | case 'u': |
1088 | do_undump = TRUE; | |
1089 | s++; | |
1090 | return s; | |
1091 | case 'U': | |
1092 | unsafe = TRUE; | |
1093 | s++; | |
1094 | return s; | |
1095 | case 'v': | |
4550b24a | 1096 | printf("\nThis is perl, version %s beta1h\n\n",patchlevel); |
4633a7c4 | 1097 | fputs("\nCopyright 1987-1995, Larry Wall\n",stdout); |
79072805 LW |
1098 | #ifdef MSDOS |
1099 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
1100 | stdout); | |
4633a7c4 | 1101 | #endif |
79072805 | 1102 | #ifdef OS2 |
4633a7c4 LW |
1103 | fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n" |
1104 | "Version 5 port Copyright (c) 1994-1995, Andreas Kaiser\n", | |
79072805 LW |
1105 | stdout); |
1106 | #endif | |
79072805 LW |
1107 | #ifdef atarist |
1108 | fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout); | |
1109 | #endif | |
1110 | fputs("\n\ | |
1111 | Perl may be copied only under the terms of either the Artistic License or the\n\ | |
1112 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n",stdout); | |
1113 | #ifdef MSDOS | |
1114 | usage(origargv[0]); | |
1115 | #endif | |
1116 | exit(0); | |
1117 | case 'w': | |
1118 | dowarn = TRUE; | |
1119 | s++; | |
1120 | return s; | |
a0d0e21e | 1121 | case '*': |
79072805 LW |
1122 | case ' ': |
1123 | if (s[1] == '-') /* Additional switches on #! line. */ | |
1124 | return s+2; | |
1125 | break; | |
a0d0e21e | 1126 | case '-': |
79072805 LW |
1127 | case 0: |
1128 | case '\n': | |
1129 | case '\t': | |
1130 | break; | |
a0d0e21e LW |
1131 | case 'P': |
1132 | if (preprocess) | |
1133 | return s+1; | |
1134 | /* FALL THROUGH */ | |
79072805 | 1135 | default: |
a0d0e21e | 1136 | croak("Can't emulate -%.1s on #! line",s); |
79072805 LW |
1137 | } |
1138 | return Nullch; | |
1139 | } | |
1140 | ||
1141 | /* compliments of Tom Christiansen */ | |
1142 | ||
1143 | /* unexec() can be found in the Gnu emacs distribution */ | |
1144 | ||
1145 | void | |
1146 | my_unexec() | |
1147 | { | |
1148 | #ifdef UNEXEC | |
1149 | int status; | |
1150 | extern int etext; | |
1151 | ||
1152 | sprintf (buf, "%s.perldump", origfilename); | |
1153 | sprintf (tokenbuf, "%s/perl", BIN); | |
1154 | ||
1155 | status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); | |
1156 | if (status) | |
1157 | fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); | |
a0d0e21e | 1158 | exit(status); |
79072805 LW |
1159 | #else |
1160 | ABORT(); /* for use with undump */ | |
1161 | #endif | |
1162 | } | |
1163 | ||
1164 | static void | |
1165 | init_main_stash() | |
1166 | { | |
463ee0b2 LW |
1167 | GV *gv; |
1168 | curstash = defstash = newHV(); | |
79072805 | 1169 | curstname = newSVpv("main",4); |
adbc6bb1 LW |
1170 | gv = gv_fetchpv("main::",TRUE, SVt_PVHV); |
1171 | SvREFCNT_dec(GvHV(gv)); | |
1172 | GvHV(gv) = (HV*)SvREFCNT_inc(defstash); | |
463ee0b2 | 1173 | SvREADONLY_on(gv); |
a0d0e21e | 1174 | HvNAME(defstash) = savepv("main"); |
85e6fe83 | 1175 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); |
79072805 | 1176 | SvMULTI_on(incgv); |
a0d0e21e | 1177 | defgv = gv_fetchpv("_",TRUE, SVt_PVAV); |
4633a7c4 LW |
1178 | errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV)); |
1179 | SvMULTI_on(errgv); | |
8990e307 LW |
1180 | curstash = defstash; |
1181 | compiling.cop_stash = defstash; | |
adbc6bb1 | 1182 | debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV)); |
4633a7c4 LW |
1183 | /* We must init $/ before switches are processed. */ |
1184 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1); | |
79072805 LW |
1185 | } |
1186 | ||
a0d0e21e LW |
1187 | #ifdef CAN_PROTOTYPE |
1188 | static void | |
1189 | open_script(char *scriptname, bool dosearch, SV *sv) | |
1190 | #else | |
79072805 LW |
1191 | static void |
1192 | open_script(scriptname,dosearch,sv) | |
1193 | char *scriptname; | |
1194 | bool dosearch; | |
1195 | SV *sv; | |
a0d0e21e | 1196 | #endif |
79072805 LW |
1197 | { |
1198 | char *xfound = Nullch; | |
1199 | char *xfailed = Nullch; | |
1200 | register char *s; | |
1201 | I32 len; | |
1202 | ||
93a17b20 | 1203 | if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { |
79072805 LW |
1204 | |
1205 | bufend = s + strlen(s); | |
1206 | while (*s) { | |
1207 | #ifndef DOSISH | |
1208 | s = cpytill(tokenbuf,s,bufend,':',&len); | |
1209 | #else | |
1210 | #ifdef atarist | |
1211 | for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); | |
1212 | tokenbuf[len] = '\0'; | |
1213 | #else | |
1214 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
1215 | tokenbuf[len] = '\0'; | |
1216 | #endif | |
1217 | #endif | |
1218 | if (*s) | |
1219 | s++; | |
1220 | #ifndef DOSISH | |
1221 | if (len && tokenbuf[len-1] != '/') | |
1222 | #else | |
1223 | #ifdef atarist | |
1224 | if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) | |
1225 | #else | |
1226 | if (len && tokenbuf[len-1] != '\\') | |
1227 | #endif | |
1228 | #endif | |
1229 | (void)strcat(tokenbuf+len,"/"); | |
1230 | (void)strcat(tokenbuf+len,scriptname); | |
1231 | DEBUG_p(fprintf(stderr,"Looking for %s\n",tokenbuf)); | |
a0d0e21e | 1232 | if (Stat(tokenbuf,&statbuf) < 0) /* not there? */ |
79072805 LW |
1233 | continue; |
1234 | if (S_ISREG(statbuf.st_mode) | |
1235 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
1236 | xfound = tokenbuf; /* bingo! */ | |
1237 | break; | |
1238 | } | |
1239 | if (!xfailed) | |
a0d0e21e | 1240 | xfailed = savepv(tokenbuf); |
79072805 LW |
1241 | } |
1242 | if (!xfound) | |
463ee0b2 | 1243 | croak("Can't execute %s", xfailed ? xfailed : scriptname ); |
79072805 LW |
1244 | if (xfailed) |
1245 | Safefree(xfailed); | |
1246 | scriptname = xfound; | |
1247 | } | |
1248 | ||
a0d0e21e | 1249 | origfilename = savepv(e_fp ? "-e" : scriptname); |
79072805 LW |
1250 | curcop->cop_filegv = gv_fetchfile(origfilename); |
1251 | if (strEQ(origfilename,"-")) | |
1252 | scriptname = ""; | |
1253 | if (preprocess) { | |
1254 | char *cpp = CPPSTDIN; | |
1255 | ||
1256 | if (strEQ(cpp,"cppstdin")) | |
1257 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
1258 | else | |
1259 | sprintf(tokenbuf, "%s", cpp); | |
1260 | sv_catpv(sv,"-I"); | |
fed7345c | 1261 | sv_catpv(sv,PRIVLIB_EXP); |
79072805 LW |
1262 | #ifdef MSDOS |
1263 | (void)sprintf(buf, "\ | |
1264 | sed %s -e \"/^[^#]/b\" \ | |
1265 | -e \"/^#[ ]*include[ ]/b\" \ | |
1266 | -e \"/^#[ ]*define[ ]/b\" \ | |
1267 | -e \"/^#[ ]*if[ ]/b\" \ | |
1268 | -e \"/^#[ ]*ifdef[ ]/b\" \ | |
1269 | -e \"/^#[ ]*ifndef[ ]/b\" \ | |
1270 | -e \"/^#[ ]*else/b\" \ | |
1271 | -e \"/^#[ ]*elif[ ]/b\" \ | |
1272 | -e \"/^#[ ]*undef[ ]/b\" \ | |
1273 | -e \"/^#[ ]*endif/b\" \ | |
1274 | -e \"s/^#.*//\" \ | |
1275 | %s | %s -C %s %s", | |
1276 | (doextract ? "-e \"1,/^#/d\n\"" : ""), | |
1277 | #else | |
1278 | (void)sprintf(buf, "\ | |
1279 | %s %s -e '/^[^#]/b' \ | |
1280 | -e '/^#[ ]*include[ ]/b' \ | |
1281 | -e '/^#[ ]*define[ ]/b' \ | |
1282 | -e '/^#[ ]*if[ ]/b' \ | |
1283 | -e '/^#[ ]*ifdef[ ]/b' \ | |
1284 | -e '/^#[ ]*ifndef[ ]/b' \ | |
1285 | -e '/^#[ ]*else/b' \ | |
1286 | -e '/^#[ ]*elif[ ]/b' \ | |
1287 | -e '/^#[ ]*undef[ ]/b' \ | |
1288 | -e '/^#[ ]*endif/b' \ | |
1289 | -e 's/^[ ]*#.*//' \ | |
1290 | %s | %s -C %s %s", | |
1291 | #ifdef LOC_SED | |
1292 | LOC_SED, | |
1293 | #else | |
1294 | "sed", | |
1295 | #endif | |
1296 | (doextract ? "-e '1,/^#/d\n'" : ""), | |
1297 | #endif | |
463ee0b2 | 1298 | scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); |
79072805 LW |
1299 | doextract = FALSE; |
1300 | #ifdef IAMSUID /* actually, this is caught earlier */ | |
1301 | if (euid != uid && !euid) { /* if running suidperl */ | |
1302 | #ifdef HAS_SETEUID | |
1303 | (void)seteuid(uid); /* musn't stay setuid root */ | |
1304 | #else | |
1305 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1306 | (void)setreuid((Uid_t)-1, uid); |
1307 | #else | |
1308 | #ifdef HAS_SETRESUID | |
1309 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); | |
79072805 LW |
1310 | #else |
1311 | setuid(uid); | |
1312 | #endif | |
1313 | #endif | |
85e6fe83 | 1314 | #endif |
79072805 | 1315 | if (geteuid() != uid) |
463ee0b2 | 1316 | croak("Can't do seteuid!\n"); |
79072805 LW |
1317 | } |
1318 | #endif /* IAMSUID */ | |
1319 | rsfp = my_popen(buf,"r"); | |
1320 | } | |
1321 | else if (!*scriptname) { | |
463ee0b2 | 1322 | taint_not("program input from stdin"); |
79072805 LW |
1323 | rsfp = stdin; |
1324 | } | |
1325 | else | |
1326 | rsfp = fopen(scriptname,"r"); | |
45d8adaa | 1327 | if ((FILE*)rsfp == Nullfp) { |
13281fa4 | 1328 | #ifdef DOSUID |
a687059c | 1329 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
a0d0e21e | 1330 | if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
13281fa4 | 1331 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 1332 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1333 | execv(buf, origargv); /* try again */ |
463ee0b2 | 1334 | croak("Can't do setuid\n"); |
13281fa4 LW |
1335 | } |
1336 | #endif | |
1337 | #endif | |
463ee0b2 | 1338 | croak("Can't open perl script \"%s\": %s\n", |
2304df62 | 1339 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
13281fa4 | 1340 | } |
79072805 | 1341 | } |
8d063cd8 | 1342 | |
79072805 LW |
1343 | static void |
1344 | validate_suid(validarg) | |
1345 | char *validarg; | |
1346 | { | |
13281fa4 LW |
1347 | /* do we need to emulate setuid on scripts? */ |
1348 | ||
1349 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
1350 | * in the kernel because of a security problem. Merely defining DOSUID | |
1351 | * in perl will not fix that problem, but if you have disabled setuid | |
1352 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
1353 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
1354 | * root version must be called suidperl or sperlN.NNN. If regular perl |
1355 | * discovers that it has opened a setuid script, it calls suidperl with | |
1356 | * the same argv that it had. If suidperl finds that the script it has | |
1357 | * just opened is NOT setuid root, it sets the effective uid back to the | |
1358 | * uid. We don't just make perl setuid root because that loses the | |
1359 | * effective uid we had before invoking perl, if it was different from the | |
1360 | * uid. | |
13281fa4 LW |
1361 | * |
1362 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
1363 | * be defined in suidperl only. suidperl must be setuid root. The | |
1364 | * Configure script will set this up for you if you want it. | |
1365 | */ | |
a687059c | 1366 | |
13281fa4 | 1367 | #ifdef DOSUID |
a0d0e21e LW |
1368 | char *s; |
1369 | ||
1370 | if (Fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
463ee0b2 | 1371 | croak("Can't stat script \"%s\"",origfilename); |
13281fa4 | 1372 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
79072805 | 1373 | I32 len; |
13281fa4 | 1374 | |
a687059c | 1375 | #ifdef IAMSUID |
fe14fcc3 | 1376 | #ifndef HAS_SETREUID |
a687059c LW |
1377 | /* On this access check to make sure the directories are readable, |
1378 | * there is actually a small window that the user could use to make | |
1379 | * filename point to an accessible directory. So there is a faint | |
1380 | * chance that someone could execute a setuid script down in a | |
1381 | * non-accessible directory. I don't know what to do about that. | |
1382 | * But I don't think it's too important. The manual lies when | |
1383 | * it says access() is useful in setuid programs. | |
1384 | */ | |
463ee0b2 LW |
1385 | if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
1386 | croak("Permission denied"); | |
a687059c LW |
1387 | #else |
1388 | /* If we can swap euid and uid, then we can determine access rights | |
1389 | * with a simple stat of the file, and then compare device and | |
1390 | * inode to make sure we did stat() on the same file we opened. | |
1391 | * Then we just have to make sure he or she can execute it. | |
1392 | */ | |
1393 | { | |
1394 | struct stat tmpstatbuf; | |
1395 | ||
85e6fe83 LW |
1396 | if ( |
1397 | #ifdef HAS_SETREUID | |
1398 | setreuid(euid,uid) < 0 | |
a0d0e21e LW |
1399 | #else |
1400 | # if HAS_SETRESUID | |
85e6fe83 | 1401 | setresuid(euid,uid,(Uid_t)-1) < 0 |
a0d0e21e | 1402 | # endif |
85e6fe83 LW |
1403 | #endif |
1404 | || getuid() != euid || geteuid() != uid) | |
463ee0b2 | 1405 | croak("Can't swap uid and euid"); /* really paranoid */ |
a0d0e21e | 1406 | if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) |
463ee0b2 | 1407 | croak("Permission denied"); /* testing full pathname here */ |
a687059c LW |
1408 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
1409 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
1410 | (void)fclose(rsfp); | |
79072805 | 1411 | if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ |
a687059c LW |
1412 | fprintf(rsfp, |
1413 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
1414 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
1415 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
1416 | statbuf.st_dev, statbuf.st_ino, | |
463ee0b2 | 1417 | SvPVX(GvSV(curcop->cop_filegv)), |
20188a90 | 1418 | statbuf.st_uid, statbuf.st_gid); |
79072805 | 1419 | (void)my_pclose(rsfp); |
a687059c | 1420 | } |
463ee0b2 | 1421 | croak("Permission denied\n"); |
a687059c | 1422 | } |
85e6fe83 LW |
1423 | if ( |
1424 | #ifdef HAS_SETREUID | |
1425 | setreuid(uid,euid) < 0 | |
a0d0e21e LW |
1426 | #else |
1427 | # if defined(HAS_SETRESUID) | |
85e6fe83 | 1428 | setresuid(uid,euid,(Uid_t)-1) < 0 |
a0d0e21e | 1429 | # endif |
85e6fe83 LW |
1430 | #endif |
1431 | || getuid() != uid || geteuid() != euid) | |
463ee0b2 | 1432 | croak("Can't reswap uid and euid"); |
27e2fb84 | 1433 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
463ee0b2 | 1434 | croak("Permission denied\n"); |
a687059c | 1435 | } |
fe14fcc3 | 1436 | #endif /* HAS_SETREUID */ |
a687059c LW |
1437 | #endif /* IAMSUID */ |
1438 | ||
27e2fb84 | 1439 | if (!S_ISREG(statbuf.st_mode)) |
463ee0b2 | 1440 | croak("Permission denied"); |
27e2fb84 | 1441 | if (statbuf.st_mode & S_IWOTH) |
463ee0b2 | 1442 | croak("Setuid/gid script is writable by world"); |
13281fa4 | 1443 | doswitches = FALSE; /* -s is insecure in suid */ |
79072805 | 1444 | curcop->cop_line++; |
13281fa4 LW |
1445 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
1446 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
463ee0b2 | 1447 | croak("No #! line"); |
663a0e37 LW |
1448 | s = tokenbuf+2; |
1449 | if (*s == ' ') s++; | |
45d8adaa | 1450 | while (!isSPACE(*s)) s++; |
27e2fb84 | 1451 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
463ee0b2 | 1452 | croak("Not a perl script"); |
a687059c | 1453 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
1454 | /* |
1455 | * #! arg must be what we saw above. They can invoke it by | |
1456 | * mentioning suidperl explicitly, but they may not add any strange | |
1457 | * arguments beyond what #! says if they do invoke suidperl that way. | |
1458 | */ | |
1459 | len = strlen(validarg); | |
1460 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 1461 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
463ee0b2 | 1462 | croak("Args must match #! line"); |
a687059c LW |
1463 | |
1464 | #ifndef IAMSUID | |
1465 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
1466 | euid == statbuf.st_uid) | |
1467 | if (!do_undump) | |
463ee0b2 | 1468 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1469 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1470 | #endif /* IAMSUID */ | |
13281fa4 LW |
1471 | |
1472 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 1473 | (void)fclose(rsfp); |
13281fa4 | 1474 | #ifndef IAMSUID |
27e2fb84 | 1475 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1476 | execv(buf, origargv); /* try again */ |
13281fa4 | 1477 | #endif |
463ee0b2 | 1478 | croak("Can't do setuid\n"); |
13281fa4 LW |
1479 | } |
1480 | ||
83025b21 | 1481 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
fe14fcc3 | 1482 | #ifdef HAS_SETEGID |
a687059c LW |
1483 | (void)setegid(statbuf.st_gid); |
1484 | #else | |
fe14fcc3 | 1485 | #ifdef HAS_SETREGID |
85e6fe83 LW |
1486 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
1487 | #else | |
1488 | #ifdef HAS_SETRESGID | |
1489 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); | |
a687059c LW |
1490 | #else |
1491 | setgid(statbuf.st_gid); | |
1492 | #endif | |
1493 | #endif | |
85e6fe83 | 1494 | #endif |
83025b21 | 1495 | if (getegid() != statbuf.st_gid) |
463ee0b2 | 1496 | croak("Can't do setegid!\n"); |
83025b21 | 1497 | } |
a687059c LW |
1498 | if (statbuf.st_mode & S_ISUID) { |
1499 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 1500 | #ifdef HAS_SETEUID |
a687059c LW |
1501 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
1502 | #else | |
fe14fcc3 | 1503 | #ifdef HAS_SETREUID |
85e6fe83 LW |
1504 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
1505 | #else | |
1506 | #ifdef HAS_SETRESUID | |
1507 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); | |
a687059c LW |
1508 | #else |
1509 | setuid(statbuf.st_uid); | |
1510 | #endif | |
1511 | #endif | |
85e6fe83 | 1512 | #endif |
83025b21 | 1513 | if (geteuid() != statbuf.st_uid) |
463ee0b2 | 1514 | croak("Can't do seteuid!\n"); |
a687059c | 1515 | } |
83025b21 | 1516 | else if (uid) { /* oops, mustn't run as root */ |
fe14fcc3 | 1517 | #ifdef HAS_SETEUID |
85e6fe83 | 1518 | (void)seteuid((Uid_t)uid); |
a687059c | 1519 | #else |
fe14fcc3 | 1520 | #ifdef HAS_SETREUID |
85e6fe83 | 1521 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
a687059c | 1522 | #else |
85e6fe83 LW |
1523 | #ifdef HAS_SETRESUID |
1524 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); | |
1525 | #else | |
1526 | setuid((Uid_t)uid); | |
1527 | #endif | |
a687059c LW |
1528 | #endif |
1529 | #endif | |
83025b21 | 1530 | if (geteuid() != uid) |
463ee0b2 | 1531 | croak("Can't do seteuid!\n"); |
83025b21 | 1532 | } |
748a9306 | 1533 | init_ids(); |
27e2fb84 | 1534 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
463ee0b2 | 1535 | croak("Permission denied\n"); /* they can't do this */ |
13281fa4 LW |
1536 | } |
1537 | #ifdef IAMSUID | |
1538 | else if (preprocess) | |
463ee0b2 | 1539 | croak("-P not allowed for setuid/setgid script\n"); |
13281fa4 | 1540 | else |
463ee0b2 | 1541 | croak("Script is not setuid/setgid in suidperl\n"); |
13281fa4 | 1542 | #endif /* IAMSUID */ |
a687059c | 1543 | #else /* !DOSUID */ |
a687059c LW |
1544 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
1545 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
a0d0e21e | 1546 | Fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
a687059c LW |
1547 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
1548 | || | |
1549 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
1550 | ) | |
1551 | if (!do_undump) | |
463ee0b2 | 1552 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1553 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1554 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
1555 | /* not set-id, must be wrapped */ | |
a687059c | 1556 | } |
13281fa4 | 1557 | #endif /* DOSUID */ |
79072805 | 1558 | } |
13281fa4 | 1559 | |
79072805 LW |
1560 | static void |
1561 | find_beginning() | |
1562 | { | |
79072805 | 1563 | register char *s; |
33b78306 LW |
1564 | |
1565 | /* skip forward in input to the real script? */ | |
1566 | ||
463ee0b2 | 1567 | taint_not("-x"); |
33b78306 | 1568 | while (doextract) { |
79072805 | 1569 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
463ee0b2 | 1570 | croak("No Perl script found in input\n"); |
33b78306 LW |
1571 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { |
1572 | ungetc('\n',rsfp); /* to keep line count right */ | |
1573 | doextract = FALSE; | |
1574 | if (s = instr(s,"perl -")) { | |
1575 | s += 6; | |
45d8adaa | 1576 | /*SUPPRESS 530*/ |
33b78306 LW |
1577 | while (s = moreswitches(s)) ; |
1578 | } | |
79072805 | 1579 | if (cddir && chdir(cddir) < 0) |
463ee0b2 | 1580 | croak("Can't chdir to %s",cddir); |
83025b21 LW |
1581 | } |
1582 | } | |
1583 | } | |
1584 | ||
79072805 | 1585 | static void |
748a9306 | 1586 | init_ids() |
352d5a3a | 1587 | { |
748a9306 LW |
1588 | uid = (int)getuid(); |
1589 | euid = (int)geteuid(); | |
1590 | gid = (int)getgid(); | |
1591 | egid = (int)getegid(); | |
1592 | #ifdef VMS | |
1593 | uid |= gid << 16; | |
1594 | euid |= egid << 16; | |
1595 | #endif | |
4633a7c4 | 1596 | tainting |= (uid && (euid != uid || egid != gid)); |
748a9306 | 1597 | } |
79072805 | 1598 | |
748a9306 LW |
1599 | static void |
1600 | init_debugger() | |
1601 | { | |
79072805 | 1602 | curstash = debstash; |
748a9306 | 1603 | dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); |
79072805 | 1604 | AvREAL_off(dbargs); |
a0d0e21e LW |
1605 | DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); |
1606 | DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); | |
748a9306 LW |
1607 | DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV)); |
1608 | DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV))); | |
1609 | DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV))); | |
1610 | DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV))); | |
79072805 | 1611 | curstash = defstash; |
352d5a3a LW |
1612 | } |
1613 | ||
79072805 | 1614 | static void |
8990e307 | 1615 | init_stacks() |
79072805 LW |
1616 | { |
1617 | stack = newAV(); | |
1618 | mainstack = stack; /* remember in case we switch stacks */ | |
1619 | AvREAL_off(stack); /* not a real array */ | |
a0d0e21e | 1620 | av_extend(stack,127); |
79072805 LW |
1621 | |
1622 | stack_base = AvARRAY(stack); | |
1623 | stack_sp = stack_base; | |
8990e307 | 1624 | stack_max = stack_base + 127; |
79072805 | 1625 | |
a0d0e21e | 1626 | New(54,markstack,64,I32); |
79072805 LW |
1627 | markstack_ptr = markstack; |
1628 | markstack_max = markstack + 64; | |
1629 | ||
a0d0e21e | 1630 | New(54,scopestack,32,I32); |
79072805 LW |
1631 | scopestack_ix = 0; |
1632 | scopestack_max = 32; | |
1633 | ||
1634 | New(54,savestack,128,ANY); | |
1635 | savestack_ix = 0; | |
1636 | savestack_max = 128; | |
1637 | ||
1638 | New(54,retstack,16,OP*); | |
1639 | retstack_ix = 0; | |
1640 | retstack_max = 16; | |
8d063cd8 | 1641 | |
79072805 | 1642 | New(50,cxstack,128,CONTEXT); |
8990e307 LW |
1643 | cxstack_ix = -1; |
1644 | cxstack_max = 128; | |
1645 | ||
1646 | New(50,tmps_stack,128,SV*); | |
1647 | tmps_ix = -1; | |
1648 | tmps_max = 128; | |
1649 | ||
79072805 LW |
1650 | DEBUG( { |
1651 | New(51,debname,128,char); | |
1652 | New(52,debdelim,128,char); | |
1653 | } ) | |
378cc40b | 1654 | } |
33b78306 | 1655 | |
a0d0e21e | 1656 | static FILE *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ |
79072805 | 1657 | static void |
8990e307 LW |
1658 | init_lexer() |
1659 | { | |
a0d0e21e | 1660 | tmpfp = rsfp; |
8990e307 LW |
1661 | |
1662 | lex_start(linestr); | |
1663 | rsfp = tmpfp; | |
1664 | subname = newSVpv("main",4); | |
1665 | } | |
1666 | ||
1667 | static void | |
79072805 | 1668 | init_predump_symbols() |
45d8adaa | 1669 | { |
93a17b20 | 1670 | GV *tmpgv; |
a0d0e21e | 1671 | GV *othergv; |
79072805 | 1672 | |
85e6fe83 | 1673 | sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); |
79072805 | 1674 | |
85e6fe83 | 1675 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
79072805 | 1676 | SvMULTI_on(stdingv); |
a0d0e21e | 1677 | IoIFP(GvIOp(stdingv)) = stdin; |
adbc6bb1 | 1678 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV); |
a0d0e21e | 1679 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv)); |
79072805 LW |
1680 | SvMULTI_on(tmpgv); |
1681 | ||
85e6fe83 | 1682 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
79072805 | 1683 | SvMULTI_on(tmpgv); |
a0d0e21e | 1684 | IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = stdout; |
4633a7c4 | 1685 | setdefout(tmpgv); |
adbc6bb1 | 1686 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV); |
a0d0e21e | 1687 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv)); |
79072805 LW |
1688 | SvMULTI_on(tmpgv); |
1689 | ||
a0d0e21e LW |
1690 | othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
1691 | SvMULTI_on(othergv); | |
1692 | IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = stderr; | |
adbc6bb1 | 1693 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV); |
a0d0e21e | 1694 | GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv)); |
79072805 | 1695 | SvMULTI_on(tmpgv); |
79072805 LW |
1696 | |
1697 | statname = NEWSV(66,0); /* last filename we did stat on */ | |
79072805 | 1698 | } |
33b78306 | 1699 | |
79072805 LW |
1700 | static void |
1701 | init_postdump_symbols(argc,argv,env) | |
1702 | register int argc; | |
1703 | register char **argv; | |
1704 | register char **env; | |
33b78306 | 1705 | { |
79072805 LW |
1706 | char *s; |
1707 | SV *sv; | |
1708 | GV* tmpgv; | |
fe14fcc3 | 1709 | |
79072805 LW |
1710 | argc--,argv++; /* skip name of script */ |
1711 | if (doswitches) { | |
1712 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
1713 | if (!argv[0][1]) | |
1714 | break; | |
1715 | if (argv[0][1] == '-') { | |
1716 | argc--,argv++; | |
1717 | break; | |
1718 | } | |
93a17b20 | 1719 | if (s = strchr(argv[0], '=')) { |
79072805 | 1720 | *s++ = '\0'; |
85e6fe83 | 1721 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
79072805 LW |
1722 | } |
1723 | else | |
85e6fe83 | 1724 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
fe14fcc3 | 1725 | } |
79072805 LW |
1726 | } |
1727 | toptarget = NEWSV(0,0); | |
1728 | sv_upgrade(toptarget, SVt_PVFM); | |
1729 | sv_setpvn(toptarget, "", 0); | |
748a9306 | 1730 | bodytarget = NEWSV(0,0); |
79072805 LW |
1731 | sv_upgrade(bodytarget, SVt_PVFM); |
1732 | sv_setpvn(bodytarget, "", 0); | |
1733 | formtarget = bodytarget; | |
1734 | ||
79072805 | 1735 | tainted = 1; |
85e6fe83 | 1736 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
79072805 LW |
1737 | sv_setpv(GvSV(tmpgv),origfilename); |
1738 | magicname("0", "0", 1); | |
1739 | } | |
85e6fe83 | 1740 | if (tmpgv = gv_fetchpv("\024",TRUE, SVt_PV)) |
79072805 | 1741 | time(&basetime); |
85e6fe83 | 1742 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
79072805 | 1743 | sv_setpv(GvSV(tmpgv),origargv[0]); |
85e6fe83 | 1744 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
79072805 LW |
1745 | SvMULTI_on(argvgv); |
1746 | (void)gv_AVadd(argvgv); | |
1747 | av_clear(GvAVn(argvgv)); | |
1748 | for (; argc > 0; argc--,argv++) { | |
a0d0e21e | 1749 | av_push(GvAVn(argvgv),newSVpv(argv[0],0)); |
79072805 LW |
1750 | } |
1751 | } | |
85e6fe83 | 1752 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
79072805 LW |
1753 | HV *hv; |
1754 | SvMULTI_on(envgv); | |
1755 | hv = GvHVn(envgv); | |
463ee0b2 | 1756 | hv_clear(hv); |
a0d0e21e | 1757 | #ifndef VMS /* VMS doesn't have environ array */ |
4633a7c4 LW |
1758 | /* Note that if the supplied env parameter is actually a copy |
1759 | of the global environ then it may now point to free'd memory | |
1760 | if the environment has been modified since. To avoid this | |
1761 | problem we treat env==NULL as meaning 'use the default' | |
1762 | */ | |
1763 | if (!env) | |
1764 | env = environ; | |
8990e307 | 1765 | if (env != environ) { |
79072805 | 1766 | environ[0] = Nullch; |
8990e307 LW |
1767 | hv_magic(hv, envgv, 'E'); |
1768 | } | |
79072805 | 1769 | for (; *env; env++) { |
93a17b20 | 1770 | if (!(s = strchr(*env,'='))) |
79072805 LW |
1771 | continue; |
1772 | *s++ = '\0'; | |
1773 | sv = newSVpv(s--,0); | |
85e6fe83 | 1774 | sv_magic(sv, sv, 'e', *env, s - *env); |
79072805 LW |
1775 | (void)hv_store(hv, *env, s - *env, sv, 0); |
1776 | *s = '='; | |
fe14fcc3 | 1777 | } |
4550b24a | 1778 | #endif |
1779 | #ifdef DYNAMIC_ENV_FETCH | |
1780 | HvNAME(hv) = savepv(ENV_HV_NAME); | |
1781 | #endif | |
f511e57f | 1782 | hv_magic(hv, envgv, 'E'); |
79072805 | 1783 | } |
79072805 | 1784 | tainted = 0; |
85e6fe83 | 1785 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 LW |
1786 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
1787 | ||
33b78306 | 1788 | } |
34de22dd | 1789 | |
79072805 LW |
1790 | static void |
1791 | init_perllib() | |
34de22dd | 1792 | { |
85e6fe83 LW |
1793 | char *s; |
1794 | if (!tainting) { | |
1795 | s = getenv("PERL5LIB"); | |
1796 | if (s) | |
1797 | incpush(s); | |
1798 | else | |
1799 | incpush(getenv("PERLLIB")); | |
1800 | } | |
34de22dd | 1801 | |
4633a7c4 LW |
1802 | #ifdef APPLLIB_EXP |
1803 | incpush(APPLLIB_EXP); | |
16d20bd9 | 1804 | #endif |
4633a7c4 | 1805 | |
fed7345c AD |
1806 | #ifdef ARCHLIB_EXP |
1807 | incpush(ARCHLIB_EXP); | |
a0d0e21e | 1808 | #endif |
fed7345c AD |
1809 | #ifndef PRIVLIB_EXP |
1810 | #define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" | |
34de22dd | 1811 | #endif |
fed7345c | 1812 | incpush(PRIVLIB_EXP); |
4633a7c4 LW |
1813 | |
1814 | #ifdef SITEARCH_EXP | |
1815 | incpush(SITEARCH_EXP); | |
1816 | #endif | |
1817 | #ifdef SITELIB_EXP | |
1818 | incpush(SITELIB_EXP); | |
1819 | #endif | |
1820 | #ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ | |
1821 | incpush(OLDARCHLIB_EXP); | |
1822 | #endif | |
a0d0e21e | 1823 | |
4633a7c4 LW |
1824 | if (!tainting) |
1825 | incpush("."); | |
34de22dd | 1826 | } |
93a17b20 LW |
1827 | |
1828 | void | |
1829 | calllist(list) | |
1830 | AV* list; | |
1831 | { | |
93a17b20 | 1832 | jmp_buf oldtop; |
a0d0e21e LW |
1833 | STRLEN len; |
1834 | line_t oldline = curcop->cop_line; | |
93a17b20 | 1835 | |
93a17b20 LW |
1836 | Copy(top_env, oldtop, 1, jmp_buf); |
1837 | ||
8990e307 LW |
1838 | while (AvFILL(list) >= 0) { |
1839 | CV *cv = (CV*)av_shift(list); | |
93a17b20 | 1840 | |
8990e307 | 1841 | SAVEFREESV(cv); |
a0d0e21e | 1842 | |
85e6fe83 | 1843 | switch (setjmp(top_env)) { |
748a9306 | 1844 | case 0: { |
4633a7c4 | 1845 | SV* atsv = GvSV(errgv); |
748a9306 LW |
1846 | PUSHMARK(stack_sp); |
1847 | perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); | |
1848 | (void)SvPV(atsv, len); | |
1849 | if (len) { | |
1850 | Copy(oldtop, top_env, 1, jmp_buf); | |
1851 | curcop = &compiling; | |
1852 | curcop->cop_line = oldline; | |
1853 | if (list == beginav) | |
1854 | sv_catpv(atsv, "BEGIN failed--compilation aborted"); | |
1855 | else | |
1856 | sv_catpv(atsv, "END failed--cleanup aborted"); | |
1857 | croak("%s", SvPVX(atsv)); | |
1858 | } | |
a0d0e21e | 1859 | } |
85e6fe83 LW |
1860 | break; |
1861 | case 1: | |
748a9306 | 1862 | #ifdef VMS |
85e6fe83 | 1863 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ |
748a9306 LW |
1864 | #else |
1865 | statusvalue = 1; | |
1866 | #endif | |
85e6fe83 LW |
1867 | /* FALL THROUGH */ |
1868 | case 2: | |
1869 | /* my_exit() was called */ | |
1870 | curstash = defstash; | |
1871 | if (endav) | |
1872 | calllist(endav); | |
a0d0e21e LW |
1873 | FREETMPS; |
1874 | Copy(oldtop, top_env, 1, jmp_buf); | |
1875 | curcop = &compiling; | |
1876 | curcop->cop_line = oldline; | |
85e6fe83 LW |
1877 | if (statusvalue) { |
1878 | if (list == beginav) | |
a0d0e21e | 1879 | croak("BEGIN failed--compilation aborted"); |
85e6fe83 | 1880 | else |
a0d0e21e | 1881 | croak("END failed--cleanup aborted"); |
85e6fe83 | 1882 | } |
85e6fe83 LW |
1883 | my_exit(statusvalue); |
1884 | /* NOTREACHED */ | |
1885 | return; | |
1886 | case 3: | |
1887 | if (!restartop) { | |
1888 | fprintf(stderr, "panic: restartop\n"); | |
a0d0e21e | 1889 | FREETMPS; |
85e6fe83 LW |
1890 | break; |
1891 | } | |
a0d0e21e LW |
1892 | Copy(oldtop, top_env, 1, jmp_buf); |
1893 | curcop = &compiling; | |
1894 | curcop->cop_line = oldline; | |
1895 | longjmp(top_env, 3); | |
8990e307 | 1896 | } |
93a17b20 LW |
1897 | } |
1898 | ||
1899 | Copy(oldtop, top_env, 1, jmp_buf); | |
1900 | } | |
1901 |