Commit | Line | Data |
---|---|---|
8d063cd8 | 1 | /* |
463ee0b2 | 2 | * Copyright (c) 1991, 1992, 1993, 1994 Larry Wall |
a687059c | 3 | * |
352d5a3a LW |
4 | * You may distribute under the terms of either the GNU General Public |
5 | * License or the Artistic License, as specified in the README file. | |
a687059c | 6 | * |
fe14fcc3 | 7 | * $Log: perl.c,v $ |
79072805 LW |
8 | * Revision 4.1 92/08/07 18:25:50 lwall |
9 | * | |
83025b21 LW |
10 | * Revision 4.0.1.7 92/06/08 14:50:39 lwall |
11 | * patch20: PERLLIB now supports multiple directories | |
12 | * patch20: running taintperl explicitly now does checks even if $< == $> | |
13 | * patch20: -e 'cmd' no longer fails silently if /tmp runs out of space | |
14 | * patch20: perl -P now uses location of sed determined by Configure | |
15 | * patch20: form feed for formats is now specifiable via $^L | |
16 | * patch20: paragraph mode now skips extra newlines automatically | |
79072805 | 17 | * patch20: oldeval "1 #comment" didn't work |
83025b21 LW |
18 | * patch20: couldn't require . files |
19 | * patch20: semantic compilation errors didn't abort execution | |
20 | * | |
988174c1 LW |
21 | * Revision 4.0.1.6 91/11/11 16:38:45 lwall |
22 | * patch19: default arg for shift was wrong after first subroutine definition | |
23 | * patch19: op/regexp.t failed from missing arg to bcmp() | |
24 | * | |
45d8adaa LW |
25 | * Revision 4.0.1.5 91/11/05 18:03:32 lwall |
26 | * patch11: random cleanup | |
27 | * patch11: $0 was being truncated at times | |
28 | * patch11: cppstdin now installed outside of source directory | |
29 | * patch11: -P didn't allow use of #elif or #undef | |
30 | * patch11: prepared for ctype implementations that don't define isascii() | |
79072805 LW |
31 | * patch11: added oldeval {} |
32 | * patch11: oldeval confused by string containing null | |
45d8adaa | 33 | * |
1462b684 LW |
34 | * Revision 4.0.1.4 91/06/10 01:23:07 lwall |
35 | * patch10: perl -v printed incorrect copyright notice | |
36 | * | |
352d5a3a LW |
37 | * Revision 4.0.1.3 91/06/07 11:40:18 lwall |
38 | * patch4: changed old $^P to $^X | |
39 | * | |
40 | * Revision 4.0.1.2 91/06/07 11:26:16 lwall | |
41 | * patch4: new copyright notice | |
42 | * patch4: added $^P variable to control calling of perldb routines | |
43 | * patch4: added $^F variable to specify maximum system fd, default 2 | |
79072805 | 44 | * patch4: debugger lost track of lines in oldeval |
352d5a3a | 45 | * |
35c8bce7 LW |
46 | * Revision 4.0.1.1 91/04/11 17:49:05 lwall |
47 | * patch1: fixed undefined environ problem | |
48 | * | |
fe14fcc3 LW |
49 | * Revision 4.0 91/03/20 01:37:44 lwall |
50 | * 4.0 baseline. | |
8d063cd8 LW |
51 | * |
52 | */ | |
53 | ||
45d8adaa LW |
54 | /*SUPPRESS 560*/ |
55 | ||
378cc40b LW |
56 | #include "EXTERN.h" |
57 | #include "perl.h" | |
58 | #include "perly.h" | |
a687059c | 59 | #include "patchlevel.h" |
378cc40b | 60 | |
463ee0b2 LW |
61 | char rcsid[] = "$RCSfile: perl.c,v $$Revision: 5.0 $$Date: 92/08/07 18:25:50 $\nPatch level: ###\n"; |
62 | ||
a687059c LW |
63 | #ifdef IAMSUID |
64 | #ifndef DOSUID | |
65 | #define DOSUID | |
66 | #endif | |
67 | #endif | |
378cc40b | 68 | |
a687059c LW |
69 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
70 | #ifdef DOSUID | |
71 | #undef DOSUID | |
72 | #endif | |
73 | #endif | |
8d063cd8 | 74 | |
83025b21 | 75 | static void incpush(); |
79072805 LW |
76 | static void validate_suid(); |
77 | static void find_beginning(); | |
78 | static void init_main_stash(); | |
79 | static void open_script(); | |
80 | static void init_debugger(); | |
8990e307 | 81 | static void init_stacks(); |
79072805 | 82 | static void init_lexer(); |
79072805 LW |
83 | static void init_predump_symbols(); |
84 | static void init_postdump_symbols(); | |
85 | static void init_perllib(); | |
86 | ||
93a17b20 | 87 | PerlInterpreter * |
79072805 LW |
88 | perl_alloc() |
89 | { | |
93a17b20 LW |
90 | PerlInterpreter *sv_interp; |
91 | PerlInterpreter junk; | |
79072805 | 92 | |
8990e307 LW |
93 | curinterp = 0; |
94 | /* Zero(&junk, 1, PerlInterpreter); */ | |
93a17b20 | 95 | New(53, sv_interp, 1, PerlInterpreter); |
79072805 LW |
96 | return sv_interp; |
97 | } | |
98 | ||
99 | void | |
100 | perl_construct( sv_interp ) | |
93a17b20 | 101 | register PerlInterpreter *sv_interp; |
79072805 | 102 | { |
2304df62 AD |
103 | char* s; |
104 | ||
79072805 LW |
105 | if (!(curinterp = sv_interp)) |
106 | return; | |
107 | ||
8990e307 | 108 | #ifdef MULTIPLICITY |
93a17b20 | 109 | Zero(sv_interp, 1, PerlInterpreter); |
8990e307 | 110 | #endif |
79072805 LW |
111 | |
112 | /* Init the real globals? */ | |
113 | if (!linestr) { | |
114 | linestr = NEWSV(65,80); | |
ed6116ce | 115 | sv_upgrade(linestr,SVt_PVIV); |
79072805 LW |
116 | |
117 | SvREADONLY_on(&sv_undef); | |
118 | ||
119 | sv_setpv(&sv_no,No); | |
463ee0b2 | 120 | SvNV(&sv_no); |
79072805 LW |
121 | SvREADONLY_on(&sv_no); |
122 | ||
123 | sv_setpv(&sv_yes,Yes); | |
463ee0b2 | 124 | SvNV(&sv_yes); |
79072805 LW |
125 | SvREADONLY_on(&sv_yes); |
126 | ||
127 | #ifdef MSDOS | |
128 | /* | |
129 | * There is no way we can refer to them from Perl so close them to save | |
130 | * space. The other alternative would be to provide STDAUX and STDPRN | |
131 | * filehandles. | |
132 | */ | |
133 | (void)fclose(stdaux); | |
134 | (void)fclose(stdprn); | |
135 | #endif | |
136 | } | |
137 | ||
8990e307 | 138 | #ifdef MULTIPLICITY |
79072805 | 139 | chopset = " \n-"; |
463ee0b2 | 140 | copline = NOLINE; |
79072805 | 141 | curcop = &compiling; |
79072805 LW |
142 | dlmax = 128; |
143 | laststatval = -1; | |
144 | laststype = OP_STAT; | |
145 | maxscream = -1; | |
146 | maxsysfd = MAXSYSFD; | |
147 | nrs = "\n"; | |
148 | nrschar = '\n'; | |
149 | nrslen = 1; | |
150 | rs = "\n"; | |
151 | rschar = '\n'; | |
152 | rsfp = Nullfp; | |
153 | rslen = 1; | |
463ee0b2 | 154 | statname = Nullsv; |
79072805 | 155 | tmps_floor = -1; |
79072805 LW |
156 | #endif |
157 | ||
158 | uid = (int)getuid(); | |
159 | euid = (int)geteuid(); | |
160 | gid = (int)getgid(); | |
161 | egid = (int)getegid(); | |
463ee0b2 | 162 | tainting = (euid != uid || egid != gid); |
2304df62 AD |
163 | if (s = strchr(rcsid,'#')) { |
164 | (void)sprintf(s, "%d\n", PATCHLEVEL); | |
165 | sprintf(patchlevel,"%3.3s%2.2d", strchr(rcsid,'5'), PATCHLEVEL); | |
166 | } | |
79072805 LW |
167 | |
168 | fdpid = newAV(); /* for remembering popen pids by fd */ | |
463ee0b2 | 169 | pidstatus = newHV();/* for remembering status of dead pids */ |
8990e307 LW |
170 | |
171 | init_stacks(); | |
172 | ENTER; | |
79072805 LW |
173 | } |
174 | ||
175 | void | |
176 | perl_destruct(sv_interp) | |
93a17b20 | 177 | register PerlInterpreter *sv_interp; |
79072805 | 178 | { |
8990e307 LW |
179 | I32 last_sv_count; |
180 | ||
79072805 LW |
181 | if (!(curinterp = sv_interp)) |
182 | return; | |
8990e307 LW |
183 | LEAVE; |
184 | FREE_TMPS(); | |
185 | ||
186 | #ifndef EMBED | |
187 | /* The exit() function may do everything that needs doing. */ | |
188 | if (!sv_rvcount) | |
189 | return; | |
190 | #endif | |
191 | ||
192 | /* Not so lucky. We must account for everything. First the syntax tree. */ | |
193 | if (main_root) { | |
194 | curpad = AvARRAY(comppad); | |
79072805 | 195 | op_free(main_root); |
8990e307 LW |
196 | main_root = 0; |
197 | } | |
198 | ||
199 | /* | |
200 | * Try to destruct global references. We do this first so that the | |
201 | * destructors and destructees still exist. This code currently | |
202 | * will break simple reference loops but may fail on more complicated | |
203 | * ones. If so, the code below will clean up, but any destructors | |
204 | * may fail to find what they're looking for. | |
205 | */ | |
2304df62 | 206 | dirty = TRUE; |
8990e307 LW |
207 | if (sv_count != 0) |
208 | sv_clean_refs(); | |
209 | ||
210 | /* Delete self-reference from main symbol table */ | |
85e6fe83 | 211 | GvHV(gv_fetchpv("::_main",TRUE, SVt_PVHV)) = 0; |
8990e307 LW |
212 | --SvREFCNT(defstash); |
213 | ||
214 | /* Try to destruct main symbol table. May fail on reference loops. */ | |
215 | SvREFCNT_dec(defstash); | |
85e6fe83 | 216 | defstash = 0; |
8990e307 LW |
217 | |
218 | FREE_TMPS(); | |
219 | #ifdef DEBUGGING | |
220 | if (scopestack_ix != 0) | |
221 | warn("Unbalanced scopes: %d more ENTERs than LEAVEs\n", scopestack_ix); | |
222 | if (savestack_ix != 0) | |
223 | warn("Unbalanced saves: %d more saves than restores\n", savestack_ix); | |
224 | if (tmps_floor != -1) | |
225 | warn("Unbalanced tmps: %d more allocs than frees\n", tmps_floor + 1); | |
226 | if (cxstack_ix != -1) | |
227 | warn("Unbalanced context: %d more PUSHes than POPs\n", cxstack_ix + 1); | |
79072805 | 228 | #endif |
8990e307 LW |
229 | |
230 | /* Now absolutely destruct everything, somehow or other, loops or no. */ | |
8990e307 LW |
231 | last_sv_count = 0; |
232 | while (sv_count != 0 && sv_count != last_sv_count) { | |
233 | last_sv_count = sv_count; | |
234 | sv_clean_all(); | |
235 | } | |
236 | if (sv_count != 0) | |
237 | warn("Scalars leaked: %d\n", sv_count); | |
79072805 LW |
238 | } |
239 | ||
240 | void | |
241 | perl_free(sv_interp) | |
93a17b20 | 242 | PerlInterpreter *sv_interp; |
79072805 LW |
243 | { |
244 | if (!(curinterp = sv_interp)) | |
245 | return; | |
246 | Safefree(sv_interp); | |
247 | } | |
248 | ||
249 | int | |
250 | perl_parse(sv_interp, argc, argv, env) | |
93a17b20 | 251 | PerlInterpreter *sv_interp; |
8d063cd8 LW |
252 | register int argc; |
253 | register char **argv; | |
79072805 | 254 | char **env; |
8d063cd8 | 255 | { |
79072805 | 256 | register SV *sv; |
8d063cd8 | 257 | register char *s; |
45d8adaa | 258 | char *scriptname; |
352d5a3a | 259 | char *getenv(); |
378cc40b | 260 | bool dosearch = FALSE; |
13281fa4 | 261 | char *validarg = ""; |
8d063cd8 | 262 | |
a687059c LW |
263 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
264 | #ifdef IAMSUID | |
265 | #undef IAMSUID | |
463ee0b2 | 266 | croak("suidperl is no longer needed since the kernel can now execute\n\ |
a687059c LW |
267 | setuid perl scripts securely.\n"); |
268 | #endif | |
269 | #endif | |
270 | ||
79072805 LW |
271 | if (!(curinterp = sv_interp)) |
272 | return 255; | |
273 | ||
274 | if (main_root) | |
275 | op_free(main_root); | |
276 | main_root = 0; | |
79072805 | 277 | |
ac58e20f LW |
278 | origargv = argv; |
279 | origargc = argc; | |
fe14fcc3 | 280 | origenviron = environ; |
79072805 LW |
281 | |
282 | switch (setjmp(top_env)) { | |
283 | case 1: | |
284 | statusvalue = 255; | |
285 | case 2: | |
8990e307 LW |
286 | curstash = defstash; |
287 | if (endav) | |
288 | calllist(endav); | |
79072805 LW |
289 | return(statusvalue); /* my_exit() was called */ |
290 | case 3: | |
291 | fprintf(stderr, "panic: top_env\n"); | |
8990e307 | 292 | return 1; |
79072805 LW |
293 | } |
294 | ||
a687059c | 295 | if (do_undump) { |
8990e307 LW |
296 | |
297 | /* Come here if running an undumped a.out. */ | |
298 | ||
33b78306 | 299 | origfilename = savestr(argv[0]); |
79072805 LW |
300 | do_undump = FALSE; |
301 | cxstack_ix = -1; /* start label stack again */ | |
8990e307 LW |
302 | init_postdump_symbols(argc,argv,env); |
303 | return 0; | |
a687059c | 304 | } |
8990e307 | 305 | |
79072805 LW |
306 | sv_setpvn(linestr,"",0); |
307 | sv = newSVpv("",0); /* first used for -I flags */ | |
8990e307 | 308 | SAVEFREESV(sv); |
79072805 | 309 | init_main_stash(); |
33b78306 | 310 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
311 | if (argv[0][0] != '-' || !argv[0][1]) |
312 | break; | |
13281fa4 LW |
313 | #ifdef DOSUID |
314 | if (*validarg) | |
315 | validarg = " PHOOEY "; | |
316 | else | |
317 | validarg = argv[0]; | |
318 | #endif | |
319 | s = argv[0]+1; | |
8d063cd8 | 320 | reswitch: |
13281fa4 | 321 | switch (*s) { |
27e2fb84 | 322 | case '0': |
2304df62 | 323 | case 'F': |
378cc40b | 324 | case 'a': |
33b78306 | 325 | case 'c': |
a687059c | 326 | case 'd': |
8d063cd8 | 327 | case 'D': |
33b78306 | 328 | case 'i': |
fe14fcc3 | 329 | case 'l': |
33b78306 LW |
330 | case 'n': |
331 | case 'p': | |
79072805 | 332 | case 's': |
463ee0b2 | 333 | case 'T': |
33b78306 LW |
334 | case 'u': |
335 | case 'U': | |
336 | case 'v': | |
337 | case 'w': | |
338 | if (s = moreswitches(s)) | |
339 | goto reswitch; | |
8d063cd8 | 340 | break; |
33b78306 | 341 | |
8d063cd8 | 342 | case 'e': |
a687059c | 343 | if (euid != uid || egid != gid) |
463ee0b2 | 344 | croak("No -e allowed in setuid scripts"); |
8d063cd8 | 345 | if (!e_fp) { |
a687059c LW |
346 | e_tmpname = savestr(TMPPATH); |
347 | (void)mktemp(e_tmpname); | |
83025b21 | 348 | if (!*e_tmpname) |
463ee0b2 | 349 | croak("Can't mktemp()"); |
8d063cd8 | 350 | e_fp = fopen(e_tmpname,"w"); |
33b78306 | 351 | if (!e_fp) |
463ee0b2 | 352 | croak("Cannot open temporary file"); |
8d063cd8 | 353 | } |
33b78306 | 354 | if (argv[1]) { |
8d063cd8 | 355 | fputs(argv[1],e_fp); |
33b78306 LW |
356 | argc--,argv++; |
357 | } | |
a687059c | 358 | (void)putc('\n', e_fp); |
8d063cd8 LW |
359 | break; |
360 | case 'I': | |
463ee0b2 | 361 | taint_not("-I"); |
79072805 LW |
362 | sv_catpv(sv,"-"); |
363 | sv_catpv(sv,s); | |
364 | sv_catpv(sv," "); | |
a687059c | 365 | if (*++s) { |
79072805 | 366 | (void)av_push(GvAVn(incgv),newSVpv(s,0)); |
378cc40b | 367 | } |
33b78306 | 368 | else if (argv[1]) { |
79072805 LW |
369 | (void)av_push(GvAVn(incgv),newSVpv(argv[1],0)); |
370 | sv_catpv(sv,argv[1]); | |
8d063cd8 | 371 | argc--,argv++; |
79072805 | 372 | sv_catpv(sv," "); |
8d063cd8 LW |
373 | } |
374 | break; | |
8d063cd8 | 375 | case 'P': |
463ee0b2 | 376 | taint_not("-P"); |
8d063cd8 | 377 | preprocess = TRUE; |
13281fa4 | 378 | s++; |
8d063cd8 | 379 | goto reswitch; |
378cc40b | 380 | case 'S': |
463ee0b2 | 381 | taint_not("-S"); |
378cc40b | 382 | dosearch = TRUE; |
13281fa4 | 383 | s++; |
378cc40b | 384 | goto reswitch; |
33b78306 LW |
385 | case 'x': |
386 | doextract = TRUE; | |
13281fa4 | 387 | s++; |
33b78306 LW |
388 | if (*s) |
389 | cddir = savestr(s); | |
390 | break; | |
8d063cd8 LW |
391 | case '-': |
392 | argc--,argv++; | |
393 | goto switch_end; | |
394 | case 0: | |
395 | break; | |
396 | default: | |
463ee0b2 | 397 | croak("Unrecognized switch: -%s",s); |
8d063cd8 LW |
398 | } |
399 | } | |
400 | switch_end: | |
45d8adaa | 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 | ||
425 | if (perldb) | |
426 | init_debugger(); | |
427 | ||
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 | ||
463ee0b2 | 438 | perl_init_ext(); /* in case linked C routines want magical variables */ |
93a17b20 | 439 | |
93a17b20 | 440 | init_predump_symbols(); |
8990e307 LW |
441 | if (!do_undump) |
442 | init_postdump_symbols(argc,argv,env); | |
93a17b20 | 443 | |
79072805 LW |
444 | init_lexer(); |
445 | ||
446 | /* now parse the script */ | |
447 | ||
448 | error_count = 0; | |
449 | if (yyparse() || error_count) { | |
450 | if (minus_c) | |
463ee0b2 | 451 | croak("%s had compilation errors.\n", origfilename); |
79072805 | 452 | else { |
463ee0b2 | 453 | croak("Execution of %s aborted due to compilation errors.\n", |
79072805 | 454 | origfilename); |
378cc40b | 455 | } |
79072805 LW |
456 | } |
457 | curcop->cop_line = 0; | |
458 | curstash = defstash; | |
459 | preprocess = FALSE; | |
460 | if (e_fp) { | |
461 | e_fp = Nullfp; | |
462 | (void)UNLINK(e_tmpname); | |
378cc40b | 463 | } |
a687059c | 464 | |
93a17b20 | 465 | /* now that script is parsed, we can modify record separator */ |
a687059c | 466 | |
93a17b20 LW |
467 | rs = nrs; |
468 | rslen = nrslen; | |
469 | rschar = nrschar; | |
470 | rspara = (nrslen == 2); | |
85e6fe83 | 471 | sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs, rslen); |
45d8adaa | 472 | |
79072805 LW |
473 | if (do_undump) |
474 | my_unexec(); | |
475 | ||
8990e307 LW |
476 | if (dowarn) |
477 | gv_check(defstash); | |
478 | ||
79072805 LW |
479 | return 0; |
480 | } | |
481 | ||
482 | int | |
483 | perl_run(sv_interp) | |
93a17b20 | 484 | PerlInterpreter *sv_interp; |
79072805 LW |
485 | { |
486 | if (!(curinterp = sv_interp)) | |
487 | return 255; | |
488 | switch (setjmp(top_env)) { | |
489 | case 1: | |
490 | cxstack_ix = -1; /* start context stack again */ | |
491 | break; | |
492 | case 2: | |
493 | curstash = defstash; | |
93a17b20 LW |
494 | if (endav) |
495 | calllist(endav); | |
8990e307 | 496 | FREE_TMPS(); |
93a17b20 | 497 | return(statusvalue); /* my_exit() was called */ |
79072805 LW |
498 | case 3: |
499 | if (!restartop) { | |
500 | fprintf(stderr, "panic: restartop\n"); | |
8990e307 LW |
501 | FREE_TMPS(); |
502 | return 1; | |
83025b21 | 503 | } |
79072805 LW |
504 | if (stack != mainstack) { |
505 | dSP; | |
506 | SWITCHSTACK(stack, mainstack); | |
507 | } | |
508 | break; | |
8d063cd8 | 509 | } |
79072805 LW |
510 | |
511 | if (!restartop) { | |
512 | DEBUG_x(dump_all()); | |
513 | DEBUG(fprintf(stderr,"\nEXECUTING...\n\n")); | |
514 | ||
515 | if (minus_c) { | |
516 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
517 | my_exit(0); | |
518 | } | |
45d8adaa | 519 | } |
79072805 LW |
520 | |
521 | /* do it */ | |
522 | ||
523 | if (restartop) { | |
524 | op = restartop; | |
525 | restartop = 0; | |
526 | run(); | |
527 | } | |
528 | else if (main_start) { | |
529 | op = main_start; | |
530 | run(); | |
531 | } | |
79072805 LW |
532 | |
533 | my_exit(0); | |
534 | } | |
535 | ||
536 | void | |
537 | my_exit(status) | |
538 | int status; | |
539 | { | |
540 | statusvalue = (unsigned short)(status & 0xffff); | |
541 | longjmp(top_env, 2); | |
542 | } | |
543 | ||
544 | /* Be sure to refetch the stack pointer after calling these routines. */ | |
545 | ||
546 | int | |
8990e307 LW |
547 | perl_callargv(subname, sp, gimme, argv) |
548 | char *subname; | |
549 | register I32 sp; /* current stack pointer */ | |
550 | I32 gimme; /* TRUE if called in list context */ | |
551 | register char **argv; /* null terminated arg list, NULL for no arglist */ | |
552 | { | |
553 | register I32 items = 0; | |
554 | I32 hasargs = (argv != 0); | |
555 | ||
556 | av_store(stack, ++sp, Nullsv); /* reserve spot for sub reference */ | |
557 | if (hasargs) { | |
558 | while (*argv) { | |
559 | av_store(stack, ++sp, sv_2mortal(newSVpv(*argv,0))); | |
560 | items++; | |
561 | argv++; | |
562 | } | |
563 | } | |
564 | return perl_callpv(subname, sp, gimme, hasargs, items); | |
565 | } | |
566 | ||
567 | int | |
568 | perl_callpv(subname, sp, gimme, hasargs, numargs) | |
79072805 LW |
569 | char *subname; |
570 | I32 sp; /* stack pointer after args are pushed */ | |
8990e307 LW |
571 | I32 gimme; /* TRUE if called in list context */ |
572 | I32 hasargs; /* whether to create a @_ array for routine */ | |
573 | I32 numargs; /* how many args are pushed on the stack */ | |
574 | { | |
85e6fe83 | 575 | return perl_callsv((SV*)gv_fetchpv(subname, TRUE, SVt_PVCV), |
8990e307 LW |
576 | sp, gimme, hasargs, numargs); |
577 | } | |
578 | ||
579 | /* May be called with any of a CV, a GV, or an SV containing the name. */ | |
580 | int | |
581 | perl_callsv(sv, sp, gimme, hasargs, numargs) | |
582 | SV* sv; | |
583 | I32 sp; /* stack pointer after args are pushed */ | |
584 | I32 gimme; /* TRUE if called in list context */ | |
79072805 LW |
585 | I32 hasargs; /* whether to create a @_ array for routine */ |
586 | I32 numargs; /* how many args are pushed on the stack */ | |
587 | { | |
588 | BINOP myop; /* fake syntax tree node */ | |
589 | ||
590 | ENTER; | |
463ee0b2 | 591 | SAVETMPS; |
79072805 LW |
592 | SAVESPTR(op); |
593 | stack_base = AvARRAY(stack); | |
93a17b20 | 594 | stack_sp = stack_base + sp - numargs - 1; |
79072805 | 595 | op = (OP*)&myop; |
463ee0b2 | 596 | Zero(op, 1, BINOP); |
79072805 | 597 | pp_pushmark(); /* doesn't look at op, actually, except to return */ |
8990e307 | 598 | *++stack_sp = sv; |
79072805 LW |
599 | stack_sp += numargs; |
600 | ||
463ee0b2 LW |
601 | if (hasargs) { |
602 | myop.op_flags = OPf_STACKED; | |
603 | myop.op_last = (OP*)&myop; | |
604 | } | |
79072805 LW |
605 | myop.op_next = Nullop; |
606 | ||
463ee0b2 LW |
607 | if (op = pp_entersubr()) |
608 | run(); | |
8990e307 | 609 | FREE_TMPS(); |
79072805 LW |
610 | LEAVE; |
611 | return stack_sp - stack_base; | |
612 | } | |
613 | ||
79072805 | 614 | void |
79072805 LW |
615 | magicname(sym,name,namlen) |
616 | char *sym; | |
617 | char *name; | |
618 | I32 namlen; | |
619 | { | |
620 | register GV *gv; | |
621 | ||
85e6fe83 | 622 | if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) |
79072805 LW |
623 | sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); |
624 | } | |
625 | ||
626 | #ifdef DOSISH | |
627 | #define PERLLIB_SEP ';' | |
628 | #else | |
629 | #define PERLLIB_SEP ':' | |
630 | #endif | |
631 | ||
632 | static void | |
633 | incpush(p) | |
634 | char *p; | |
635 | { | |
636 | char *s; | |
637 | ||
638 | if (!p) | |
639 | return; | |
640 | ||
641 | /* Break at all separators */ | |
642 | while (*p) { | |
643 | /* First, skip any consecutive separators */ | |
644 | while ( *p == PERLLIB_SEP ) { | |
645 | /* Uncomment the next line for PATH semantics */ | |
646 | /* (void)av_push(GvAVn(incgv), newSVpv(".", 1)); */ | |
647 | p++; | |
648 | } | |
93a17b20 | 649 | if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { |
79072805 LW |
650 | (void)av_push(GvAVn(incgv), newSVpv(p, (I32)(s - p))); |
651 | p = s + 1; | |
652 | } else { | |
653 | (void)av_push(GvAVn(incgv), newSVpv(p, 0)); | |
654 | break; | |
655 | } | |
656 | } | |
657 | } | |
658 | ||
659 | /* This routine handles any switches that can be given during run */ | |
660 | ||
661 | char * | |
662 | moreswitches(s) | |
663 | char *s; | |
664 | { | |
665 | I32 numlen; | |
666 | ||
667 | switch (*s) { | |
668 | case '0': | |
669 | nrschar = scan_oct(s, 4, &numlen); | |
670 | nrs = nsavestr("\n",1); | |
671 | *nrs = nrschar; | |
672 | if (nrschar > 0377) { | |
673 | nrslen = 0; | |
674 | nrs = ""; | |
675 | } | |
676 | else if (!nrschar && numlen >= 2) { | |
677 | nrslen = 2; | |
678 | nrs = "\n\n"; | |
679 | nrschar = '\n'; | |
680 | } | |
681 | return s + numlen; | |
2304df62 AD |
682 | case 'F': |
683 | minus_F = TRUE; | |
684 | splitstr = savestr(s + 1); | |
685 | s += strlen(s); | |
686 | return s; | |
79072805 LW |
687 | case 'a': |
688 | minus_a = TRUE; | |
689 | s++; | |
690 | return s; | |
691 | case 'c': | |
692 | minus_c = TRUE; | |
693 | s++; | |
694 | return s; | |
695 | case 'd': | |
463ee0b2 | 696 | taint_not("-d"); |
79072805 LW |
697 | perldb = TRUE; |
698 | s++; | |
699 | return s; | |
700 | case 'D': | |
701 | #ifdef DEBUGGING | |
463ee0b2 | 702 | taint_not("-D"); |
79072805 | 703 | if (isALPHA(s[1])) { |
8990e307 | 704 | static char debopts[] = "psltocPmfrxuLHXD"; |
79072805 LW |
705 | char *d; |
706 | ||
93a17b20 | 707 | for (s++; *s && (d = strchr(debopts,*s)); s++) |
79072805 LW |
708 | debug |= 1 << (d - debopts); |
709 | } | |
710 | else { | |
711 | debug = atoi(s+1); | |
712 | for (s++; isDIGIT(*s); s++) ; | |
713 | } | |
8990e307 | 714 | debug |= 0x80000000; |
79072805 LW |
715 | #else |
716 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
717 | for (s++; isDIGIT(*s); s++) ; | |
718 | #endif | |
719 | /*SUPPRESS 530*/ | |
720 | return s; | |
721 | case 'i': | |
722 | if (inplace) | |
723 | Safefree(inplace); | |
724 | inplace = savestr(s+1); | |
725 | /*SUPPRESS 530*/ | |
726 | for (s = inplace; *s && !isSPACE(*s); s++) ; | |
727 | *s = '\0'; | |
728 | break; | |
729 | case 'I': | |
463ee0b2 | 730 | taint_not("-I"); |
79072805 LW |
731 | if (*++s) { |
732 | (void)av_push(GvAVn(incgv),newSVpv(s,0)); | |
733 | } | |
734 | else | |
463ee0b2 | 735 | croak("No space allowed after -I"); |
79072805 LW |
736 | break; |
737 | case 'l': | |
738 | minus_l = TRUE; | |
739 | s++; | |
740 | if (isDIGIT(*s)) { | |
741 | ors = savestr("\n"); | |
742 | orslen = 1; | |
743 | *ors = scan_oct(s, 3 + (*s == '0'), &numlen); | |
744 | s += numlen; | |
745 | } | |
746 | else { | |
747 | ors = nsavestr(nrs,nrslen); | |
748 | orslen = nrslen; | |
749 | } | |
750 | return s; | |
751 | case 'n': | |
752 | minus_n = TRUE; | |
753 | s++; | |
754 | return s; | |
755 | case 'p': | |
756 | minus_p = TRUE; | |
757 | s++; | |
758 | return s; | |
759 | case 's': | |
463ee0b2 | 760 | taint_not("-s"); |
79072805 LW |
761 | doswitches = TRUE; |
762 | s++; | |
763 | return s; | |
463ee0b2 LW |
764 | case 'T': |
765 | tainting = TRUE; | |
766 | s++; | |
767 | return s; | |
79072805 LW |
768 | case 'u': |
769 | do_undump = TRUE; | |
770 | s++; | |
771 | return s; | |
772 | case 'U': | |
773 | unsafe = TRUE; | |
774 | s++; | |
775 | return s; | |
776 | case 'v': | |
85e6fe83 | 777 | fputs("\nThis is perl, version 5.0, Alpha 9 (unsupported)\n\n",stdout); |
79072805 | 778 | fputs(rcsid,stdout); |
463ee0b2 | 779 | fputs("\nCopyright (c) 1989, 1990, 1991, 1992, 1993, 1994 Larry Wall\n",stdout); |
79072805 LW |
780 | #ifdef MSDOS |
781 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
782 | stdout); | |
783 | #ifdef OS2 | |
784 | fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n", | |
785 | stdout); | |
786 | #endif | |
787 | #endif | |
788 | #ifdef atarist | |
789 | fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout); | |
790 | #endif | |
791 | fputs("\n\ | |
792 | Perl may be copied only under the terms of either the Artistic License or the\n\ | |
793 | GNU General Public License, which may be found in the Perl 5.0 source kit.\n",stdout); | |
794 | #ifdef MSDOS | |
795 | usage(origargv[0]); | |
796 | #endif | |
797 | exit(0); | |
798 | case 'w': | |
799 | dowarn = TRUE; | |
800 | s++; | |
801 | return s; | |
802 | case ' ': | |
803 | if (s[1] == '-') /* Additional switches on #! line. */ | |
804 | return s+2; | |
805 | break; | |
806 | case 0: | |
807 | case '\n': | |
808 | case '\t': | |
809 | break; | |
810 | default: | |
463ee0b2 | 811 | croak("Switch meaningless after -x: -%s",s); |
79072805 LW |
812 | } |
813 | return Nullch; | |
814 | } | |
815 | ||
816 | /* compliments of Tom Christiansen */ | |
817 | ||
818 | /* unexec() can be found in the Gnu emacs distribution */ | |
819 | ||
820 | void | |
821 | my_unexec() | |
822 | { | |
823 | #ifdef UNEXEC | |
824 | int status; | |
825 | extern int etext; | |
826 | ||
827 | sprintf (buf, "%s.perldump", origfilename); | |
828 | sprintf (tokenbuf, "%s/perl", BIN); | |
829 | ||
830 | status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); | |
831 | if (status) | |
832 | fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); | |
833 | my_exit(status); | |
834 | #else | |
835 | ABORT(); /* for use with undump */ | |
836 | #endif | |
837 | } | |
838 | ||
839 | static void | |
840 | init_main_stash() | |
841 | { | |
463ee0b2 LW |
842 | GV *gv; |
843 | curstash = defstash = newHV(); | |
79072805 | 844 | curstname = newSVpv("main",4); |
85e6fe83 | 845 | GvHV(gv = gv_fetchpv("_main",TRUE, SVt_PVHV)) = (HV*)SvREFCNT_inc(defstash); |
463ee0b2 | 846 | SvREADONLY_on(gv); |
85e6fe83 LW |
847 | HvNAME(defstash) = savestr("main"); |
848 | incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); | |
79072805 | 849 | SvMULTI_on(incgv); |
85e6fe83 | 850 | defgv = gv_fetchpv("_",TRUE, SVt_PV); |
8990e307 LW |
851 | curstash = defstash; |
852 | compiling.cop_stash = defstash; | |
79072805 LW |
853 | } |
854 | ||
855 | static void | |
856 | open_script(scriptname,dosearch,sv) | |
857 | char *scriptname; | |
858 | bool dosearch; | |
859 | SV *sv; | |
860 | { | |
861 | char *xfound = Nullch; | |
862 | char *xfailed = Nullch; | |
863 | register char *s; | |
864 | I32 len; | |
865 | ||
93a17b20 | 866 | if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { |
79072805 LW |
867 | |
868 | bufend = s + strlen(s); | |
869 | while (*s) { | |
870 | #ifndef DOSISH | |
871 | s = cpytill(tokenbuf,s,bufend,':',&len); | |
872 | #else | |
873 | #ifdef atarist | |
874 | for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); | |
875 | tokenbuf[len] = '\0'; | |
876 | #else | |
877 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
878 | tokenbuf[len] = '\0'; | |
879 | #endif | |
880 | #endif | |
881 | if (*s) | |
882 | s++; | |
883 | #ifndef DOSISH | |
884 | if (len && tokenbuf[len-1] != '/') | |
885 | #else | |
886 | #ifdef atarist | |
887 | if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) | |
888 | #else | |
889 | if (len && tokenbuf[len-1] != '\\') | |
890 | #endif | |
891 | #endif | |
892 | (void)strcat(tokenbuf+len,"/"); | |
893 | (void)strcat(tokenbuf+len,scriptname); | |
894 | DEBUG_p(fprintf(stderr,"Looking for %s\n",tokenbuf)); | |
895 | if (stat(tokenbuf,&statbuf) < 0) /* not there? */ | |
896 | continue; | |
897 | if (S_ISREG(statbuf.st_mode) | |
898 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { | |
899 | xfound = tokenbuf; /* bingo! */ | |
900 | break; | |
901 | } | |
902 | if (!xfailed) | |
903 | xfailed = savestr(tokenbuf); | |
904 | } | |
905 | if (!xfound) | |
463ee0b2 | 906 | croak("Can't execute %s", xfailed ? xfailed : scriptname ); |
79072805 LW |
907 | if (xfailed) |
908 | Safefree(xfailed); | |
909 | scriptname = xfound; | |
910 | } | |
911 | ||
8990e307 | 912 | origfilename = savestr(e_fp ? "-e" : scriptname); |
79072805 LW |
913 | curcop->cop_filegv = gv_fetchfile(origfilename); |
914 | if (strEQ(origfilename,"-")) | |
915 | scriptname = ""; | |
916 | if (preprocess) { | |
917 | char *cpp = CPPSTDIN; | |
918 | ||
919 | if (strEQ(cpp,"cppstdin")) | |
920 | sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); | |
921 | else | |
922 | sprintf(tokenbuf, "%s", cpp); | |
923 | sv_catpv(sv,"-I"); | |
924 | sv_catpv(sv,PRIVLIB); | |
925 | #ifdef MSDOS | |
926 | (void)sprintf(buf, "\ | |
927 | sed %s -e \"/^[^#]/b\" \ | |
928 | -e \"/^#[ ]*include[ ]/b\" \ | |
929 | -e \"/^#[ ]*define[ ]/b\" \ | |
930 | -e \"/^#[ ]*if[ ]/b\" \ | |
931 | -e \"/^#[ ]*ifdef[ ]/b\" \ | |
932 | -e \"/^#[ ]*ifndef[ ]/b\" \ | |
933 | -e \"/^#[ ]*else/b\" \ | |
934 | -e \"/^#[ ]*elif[ ]/b\" \ | |
935 | -e \"/^#[ ]*undef[ ]/b\" \ | |
936 | -e \"/^#[ ]*endif/b\" \ | |
937 | -e \"s/^#.*//\" \ | |
938 | %s | %s -C %s %s", | |
939 | (doextract ? "-e \"1,/^#/d\n\"" : ""), | |
940 | #else | |
941 | (void)sprintf(buf, "\ | |
942 | %s %s -e '/^[^#]/b' \ | |
943 | -e '/^#[ ]*include[ ]/b' \ | |
944 | -e '/^#[ ]*define[ ]/b' \ | |
945 | -e '/^#[ ]*if[ ]/b' \ | |
946 | -e '/^#[ ]*ifdef[ ]/b' \ | |
947 | -e '/^#[ ]*ifndef[ ]/b' \ | |
948 | -e '/^#[ ]*else/b' \ | |
949 | -e '/^#[ ]*elif[ ]/b' \ | |
950 | -e '/^#[ ]*undef[ ]/b' \ | |
951 | -e '/^#[ ]*endif/b' \ | |
952 | -e 's/^[ ]*#.*//' \ | |
953 | %s | %s -C %s %s", | |
954 | #ifdef LOC_SED | |
955 | LOC_SED, | |
956 | #else | |
957 | "sed", | |
958 | #endif | |
959 | (doextract ? "-e '1,/^#/d\n'" : ""), | |
960 | #endif | |
463ee0b2 | 961 | scriptname, tokenbuf, SvPV(sv, na), CPPMINUS); |
79072805 LW |
962 | DEBUG_P(fprintf(stderr, "%s\n", buf)); |
963 | doextract = FALSE; | |
964 | #ifdef IAMSUID /* actually, this is caught earlier */ | |
965 | if (euid != uid && !euid) { /* if running suidperl */ | |
966 | #ifdef HAS_SETEUID | |
967 | (void)seteuid(uid); /* musn't stay setuid root */ | |
968 | #else | |
969 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
970 | (void)setreuid((Uid_t)-1, uid); |
971 | #else | |
972 | #ifdef HAS_SETRESUID | |
973 | (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); | |
79072805 LW |
974 | #else |
975 | setuid(uid); | |
976 | #endif | |
977 | #endif | |
85e6fe83 | 978 | #endif |
79072805 | 979 | if (geteuid() != uid) |
463ee0b2 | 980 | croak("Can't do seteuid!\n"); |
79072805 LW |
981 | } |
982 | #endif /* IAMSUID */ | |
983 | rsfp = my_popen(buf,"r"); | |
984 | } | |
985 | else if (!*scriptname) { | |
463ee0b2 | 986 | taint_not("program input from stdin"); |
79072805 LW |
987 | rsfp = stdin; |
988 | } | |
989 | else | |
990 | rsfp = fopen(scriptname,"r"); | |
45d8adaa | 991 | if ((FILE*)rsfp == Nullfp) { |
13281fa4 | 992 | #ifdef DOSUID |
a687059c | 993 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
463ee0b2 | 994 | if (euid && stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && |
13281fa4 | 995 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 | 996 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 997 | execv(buf, origargv); /* try again */ |
463ee0b2 | 998 | croak("Can't do setuid\n"); |
13281fa4 LW |
999 | } |
1000 | #endif | |
1001 | #endif | |
463ee0b2 | 1002 | croak("Can't open perl script \"%s\": %s\n", |
2304df62 | 1003 | SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); |
13281fa4 | 1004 | } |
79072805 | 1005 | } |
8d063cd8 | 1006 | |
79072805 LW |
1007 | static void |
1008 | validate_suid(validarg) | |
1009 | char *validarg; | |
1010 | { | |
93a17b20 | 1011 | char *s; |
13281fa4 LW |
1012 | /* do we need to emulate setuid on scripts? */ |
1013 | ||
1014 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
1015 | * in the kernel because of a security problem. Merely defining DOSUID | |
1016 | * in perl will not fix that problem, but if you have disabled setuid | |
1017 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
1018 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
27e2fb84 LW |
1019 | * root version must be called suidperl or sperlN.NNN. If regular perl |
1020 | * discovers that it has opened a setuid script, it calls suidperl with | |
1021 | * the same argv that it had. If suidperl finds that the script it has | |
1022 | * just opened is NOT setuid root, it sets the effective uid back to the | |
1023 | * uid. We don't just make perl setuid root because that loses the | |
1024 | * effective uid we had before invoking perl, if it was different from the | |
1025 | * uid. | |
13281fa4 LW |
1026 | * |
1027 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
1028 | * be defined in suidperl only. suidperl must be setuid root. The | |
1029 | * Configure script will set this up for you if you want it. | |
1030 | */ | |
a687059c | 1031 | |
13281fa4 LW |
1032 | #ifdef DOSUID |
1033 | if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
463ee0b2 | 1034 | croak("Can't stat script \"%s\"",origfilename); |
13281fa4 | 1035 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
79072805 | 1036 | I32 len; |
13281fa4 | 1037 | |
a687059c | 1038 | #ifdef IAMSUID |
fe14fcc3 | 1039 | #ifndef HAS_SETREUID |
a687059c LW |
1040 | /* On this access check to make sure the directories are readable, |
1041 | * there is actually a small window that the user could use to make | |
1042 | * filename point to an accessible directory. So there is a faint | |
1043 | * chance that someone could execute a setuid script down in a | |
1044 | * non-accessible directory. I don't know what to do about that. | |
1045 | * But I don't think it's too important. The manual lies when | |
1046 | * it says access() is useful in setuid programs. | |
1047 | */ | |
463ee0b2 LW |
1048 | if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ |
1049 | croak("Permission denied"); | |
a687059c LW |
1050 | #else |
1051 | /* If we can swap euid and uid, then we can determine access rights | |
1052 | * with a simple stat of the file, and then compare device and | |
1053 | * inode to make sure we did stat() on the same file we opened. | |
1054 | * Then we just have to make sure he or she can execute it. | |
1055 | */ | |
1056 | { | |
1057 | struct stat tmpstatbuf; | |
1058 | ||
85e6fe83 LW |
1059 | if ( |
1060 | #ifdef HAS_SETREUID | |
1061 | setreuid(euid,uid) < 0 | |
1062 | #elif HAS_SETRESUID | |
1063 | setresuid(euid,uid,(Uid_t)-1) < 0 | |
1064 | #endif | |
1065 | || getuid() != euid || geteuid() != uid) | |
463ee0b2 LW |
1066 | croak("Can't swap uid and euid"); /* really paranoid */ |
1067 | if (stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) | |
1068 | croak("Permission denied"); /* testing full pathname here */ | |
a687059c LW |
1069 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
1070 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
1071 | (void)fclose(rsfp); | |
79072805 | 1072 | if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */ |
a687059c LW |
1073 | fprintf(rsfp, |
1074 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
1075 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
1076 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
1077 | statbuf.st_dev, statbuf.st_ino, | |
463ee0b2 | 1078 | SvPVX(GvSV(curcop->cop_filegv)), |
20188a90 | 1079 | statbuf.st_uid, statbuf.st_gid); |
79072805 | 1080 | (void)my_pclose(rsfp); |
a687059c | 1081 | } |
463ee0b2 | 1082 | croak("Permission denied\n"); |
a687059c | 1083 | } |
85e6fe83 LW |
1084 | if ( |
1085 | #ifdef HAS_SETREUID | |
1086 | setreuid(uid,euid) < 0 | |
1087 | #elif defined(HAS_SETRESUID) | |
1088 | setresuid(uid,euid,(Uid_t)-1) < 0 | |
1089 | #endif | |
1090 | || getuid() != uid || geteuid() != euid) | |
463ee0b2 | 1091 | croak("Can't reswap uid and euid"); |
27e2fb84 | 1092 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
463ee0b2 | 1093 | croak("Permission denied\n"); |
a687059c | 1094 | } |
fe14fcc3 | 1095 | #endif /* HAS_SETREUID */ |
a687059c LW |
1096 | #endif /* IAMSUID */ |
1097 | ||
27e2fb84 | 1098 | if (!S_ISREG(statbuf.st_mode)) |
463ee0b2 | 1099 | croak("Permission denied"); |
27e2fb84 | 1100 | if (statbuf.st_mode & S_IWOTH) |
463ee0b2 | 1101 | croak("Setuid/gid script is writable by world"); |
13281fa4 | 1102 | doswitches = FALSE; /* -s is insecure in suid */ |
79072805 | 1103 | curcop->cop_line++; |
13281fa4 LW |
1104 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
1105 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
463ee0b2 | 1106 | croak("No #! line"); |
663a0e37 LW |
1107 | s = tokenbuf+2; |
1108 | if (*s == ' ') s++; | |
45d8adaa | 1109 | while (!isSPACE(*s)) s++; |
27e2fb84 | 1110 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
463ee0b2 | 1111 | croak("Not a perl script"); |
a687059c | 1112 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
1113 | /* |
1114 | * #! arg must be what we saw above. They can invoke it by | |
1115 | * mentioning suidperl explicitly, but they may not add any strange | |
1116 | * arguments beyond what #! says if they do invoke suidperl that way. | |
1117 | */ | |
1118 | len = strlen(validarg); | |
1119 | if (strEQ(validarg," PHOOEY ") || | |
45d8adaa | 1120 | strnNE(s,validarg,len) || !isSPACE(s[len])) |
463ee0b2 | 1121 | croak("Args must match #! line"); |
a687059c LW |
1122 | |
1123 | #ifndef IAMSUID | |
1124 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
1125 | euid == statbuf.st_uid) | |
1126 | if (!do_undump) | |
463ee0b2 | 1127 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1128 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1129 | #endif /* IAMSUID */ | |
13281fa4 LW |
1130 | |
1131 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 1132 | (void)fclose(rsfp); |
13281fa4 | 1133 | #ifndef IAMSUID |
27e2fb84 | 1134 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c | 1135 | execv(buf, origargv); /* try again */ |
13281fa4 | 1136 | #endif |
463ee0b2 | 1137 | croak("Can't do setuid\n"); |
13281fa4 LW |
1138 | } |
1139 | ||
83025b21 | 1140 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { |
fe14fcc3 | 1141 | #ifdef HAS_SETEGID |
a687059c LW |
1142 | (void)setegid(statbuf.st_gid); |
1143 | #else | |
fe14fcc3 | 1144 | #ifdef HAS_SETREGID |
85e6fe83 LW |
1145 | (void)setregid((Gid_t)-1,statbuf.st_gid); |
1146 | #else | |
1147 | #ifdef HAS_SETRESGID | |
1148 | (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); | |
a687059c LW |
1149 | #else |
1150 | setgid(statbuf.st_gid); | |
1151 | #endif | |
1152 | #endif | |
85e6fe83 | 1153 | #endif |
83025b21 | 1154 | if (getegid() != statbuf.st_gid) |
463ee0b2 | 1155 | croak("Can't do setegid!\n"); |
83025b21 | 1156 | } |
a687059c LW |
1157 | if (statbuf.st_mode & S_ISUID) { |
1158 | if (statbuf.st_uid != euid) | |
fe14fcc3 | 1159 | #ifdef HAS_SETEUID |
a687059c LW |
1160 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
1161 | #else | |
fe14fcc3 | 1162 | #ifdef HAS_SETREUID |
85e6fe83 LW |
1163 | (void)setreuid((Uid_t)-1,statbuf.st_uid); |
1164 | #else | |
1165 | #ifdef HAS_SETRESUID | |
1166 | (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); | |
a687059c LW |
1167 | #else |
1168 | setuid(statbuf.st_uid); | |
1169 | #endif | |
1170 | #endif | |
85e6fe83 | 1171 | #endif |
83025b21 | 1172 | if (geteuid() != statbuf.st_uid) |
463ee0b2 | 1173 | croak("Can't do seteuid!\n"); |
a687059c | 1174 | } |
83025b21 | 1175 | else if (uid) { /* oops, mustn't run as root */ |
fe14fcc3 | 1176 | #ifdef HAS_SETEUID |
85e6fe83 | 1177 | (void)seteuid((Uid_t)uid); |
a687059c | 1178 | #else |
fe14fcc3 | 1179 | #ifdef HAS_SETREUID |
85e6fe83 | 1180 | (void)setreuid((Uid_t)-1,(Uid_t)uid); |
a687059c | 1181 | #else |
85e6fe83 LW |
1182 | #ifdef HAS_SETRESUID |
1183 | (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); | |
1184 | #else | |
1185 | setuid((Uid_t)uid); | |
1186 | #endif | |
a687059c LW |
1187 | #endif |
1188 | #endif | |
83025b21 | 1189 | if (geteuid() != uid) |
463ee0b2 | 1190 | croak("Can't do seteuid!\n"); |
83025b21 | 1191 | } |
ffed7fef | 1192 | uid = (int)getuid(); |
13281fa4 | 1193 | euid = (int)geteuid(); |
ffed7fef LW |
1194 | gid = (int)getgid(); |
1195 | egid = (int)getegid(); | |
463ee0b2 | 1196 | tainting |= (euid != uid || egid != gid); |
27e2fb84 | 1197 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
463ee0b2 | 1198 | croak("Permission denied\n"); /* they can't do this */ |
13281fa4 LW |
1199 | } |
1200 | #ifdef IAMSUID | |
1201 | else if (preprocess) | |
463ee0b2 | 1202 | croak("-P not allowed for setuid/setgid script\n"); |
13281fa4 | 1203 | else |
463ee0b2 | 1204 | croak("Script is not setuid/setgid in suidperl\n"); |
13281fa4 | 1205 | #endif /* IAMSUID */ |
a687059c | 1206 | #else /* !DOSUID */ |
a687059c LW |
1207 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
1208 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
1209 | fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ | |
1210 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) | |
1211 | || | |
1212 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
1213 | ) | |
1214 | if (!do_undump) | |
463ee0b2 | 1215 | croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
a687059c LW |
1216 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
1217 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
1218 | /* not set-id, must be wrapped */ | |
a687059c | 1219 | } |
13281fa4 | 1220 | #endif /* DOSUID */ |
79072805 | 1221 | } |
13281fa4 | 1222 | |
79072805 LW |
1223 | static void |
1224 | find_beginning() | |
1225 | { | |
79072805 | 1226 | register char *s; |
33b78306 LW |
1227 | |
1228 | /* skip forward in input to the real script? */ | |
1229 | ||
463ee0b2 | 1230 | taint_not("-x"); |
33b78306 | 1231 | while (doextract) { |
79072805 | 1232 | if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) |
463ee0b2 | 1233 | croak("No Perl script found in input\n"); |
33b78306 LW |
1234 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { |
1235 | ungetc('\n',rsfp); /* to keep line count right */ | |
1236 | doextract = FALSE; | |
1237 | if (s = instr(s,"perl -")) { | |
1238 | s += 6; | |
45d8adaa | 1239 | /*SUPPRESS 530*/ |
33b78306 LW |
1240 | while (s = moreswitches(s)) ; |
1241 | } | |
79072805 | 1242 | if (cddir && chdir(cddir) < 0) |
463ee0b2 | 1243 | croak("Can't chdir to %s",cddir); |
83025b21 LW |
1244 | } |
1245 | } | |
1246 | } | |
1247 | ||
79072805 LW |
1248 | static void |
1249 | init_debugger() | |
352d5a3a | 1250 | { |
79072805 LW |
1251 | GV* tmpgv; |
1252 | ||
463ee0b2 | 1253 | debstash = newHV(); |
85e6fe83 | 1254 | GvHV(gv_fetchpv("::_DB",TRUE, SVt_PVHV)) = debstash; |
79072805 | 1255 | curstash = debstash; |
85e6fe83 | 1256 | dbargs = GvAV(gv_AVadd((tmpgv = gv_fetchpv("args",TRUE, SVt_PVAV)))); |
79072805 LW |
1257 | SvMULTI_on(tmpgv); |
1258 | AvREAL_off(dbargs); | |
85e6fe83 | 1259 | DBgv = gv_fetchpv("DB",TRUE, SVt_PVGV); |
79072805 | 1260 | SvMULTI_on(DBgv); |
85e6fe83 | 1261 | DBline = gv_fetchpv("dbline",TRUE, SVt_PVAV); |
79072805 | 1262 | SvMULTI_on(DBline); |
85e6fe83 | 1263 | DBsub = gv_HVadd(tmpgv = gv_fetchpv("sub",TRUE, SVt_PVHV)); |
79072805 | 1264 | SvMULTI_on(tmpgv); |
85e6fe83 | 1265 | DBsingle = GvSV((tmpgv = gv_fetchpv("single",TRUE, SVt_PV))); |
79072805 | 1266 | SvMULTI_on(tmpgv); |
85e6fe83 | 1267 | DBtrace = GvSV((tmpgv = gv_fetchpv("trace",TRUE, SVt_PV))); |
79072805 | 1268 | SvMULTI_on(tmpgv); |
85e6fe83 | 1269 | DBsignal = GvSV((tmpgv = gv_fetchpv("signal",TRUE, SVt_PV))); |
79072805 LW |
1270 | SvMULTI_on(tmpgv); |
1271 | curstash = defstash; | |
352d5a3a LW |
1272 | } |
1273 | ||
79072805 | 1274 | static void |
8990e307 | 1275 | init_stacks() |
79072805 LW |
1276 | { |
1277 | stack = newAV(); | |
1278 | mainstack = stack; /* remember in case we switch stacks */ | |
1279 | AvREAL_off(stack); /* not a real array */ | |
1280 | av_fill(stack,127); av_fill(stack,-1); /* preextend stack */ | |
1281 | ||
1282 | stack_base = AvARRAY(stack); | |
1283 | stack_sp = stack_base; | |
8990e307 | 1284 | stack_max = stack_base + 127; |
79072805 LW |
1285 | |
1286 | New(54,markstack,64,int); | |
1287 | markstack_ptr = markstack; | |
1288 | markstack_max = markstack + 64; | |
1289 | ||
1290 | New(54,scopestack,32,int); | |
1291 | scopestack_ix = 0; | |
1292 | scopestack_max = 32; | |
1293 | ||
1294 | New(54,savestack,128,ANY); | |
1295 | savestack_ix = 0; | |
1296 | savestack_max = 128; | |
1297 | ||
1298 | New(54,retstack,16,OP*); | |
1299 | retstack_ix = 0; | |
1300 | retstack_max = 16; | |
8d063cd8 | 1301 | |
79072805 | 1302 | New(50,cxstack,128,CONTEXT); |
8990e307 LW |
1303 | cxstack_ix = -1; |
1304 | cxstack_max = 128; | |
1305 | ||
1306 | New(50,tmps_stack,128,SV*); | |
1307 | tmps_ix = -1; | |
1308 | tmps_max = 128; | |
1309 | ||
79072805 LW |
1310 | DEBUG( { |
1311 | New(51,debname,128,char); | |
1312 | New(52,debdelim,128,char); | |
1313 | } ) | |
378cc40b | 1314 | } |
33b78306 | 1315 | |
79072805 | 1316 | static void |
8990e307 LW |
1317 | init_lexer() |
1318 | { | |
1319 | FILE* tmpfp = rsfp; | |
1320 | ||
1321 | lex_start(linestr); | |
1322 | rsfp = tmpfp; | |
1323 | subname = newSVpv("main",4); | |
1324 | } | |
1325 | ||
1326 | static void | |
79072805 | 1327 | init_predump_symbols() |
45d8adaa | 1328 | { |
93a17b20 | 1329 | GV *tmpgv; |
79072805 | 1330 | |
85e6fe83 | 1331 | sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); |
79072805 | 1332 | |
85e6fe83 | 1333 | stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); |
79072805 LW |
1334 | SvMULTI_on(stdingv); |
1335 | if (!GvIO(stdingv)) | |
1336 | GvIO(stdingv) = newIO(); | |
8990e307 | 1337 | IoIFP(GvIO(stdingv)) = stdin; |
85e6fe83 | 1338 | tmpgv = gv_fetchpv("stdin",TRUE, SVt_PVIO); |
8990e307 | 1339 | GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(stdingv)); |
79072805 LW |
1340 | SvMULTI_on(tmpgv); |
1341 | ||
85e6fe83 | 1342 | tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); |
79072805 LW |
1343 | SvMULTI_on(tmpgv); |
1344 | if (!GvIO(tmpgv)) | |
1345 | GvIO(tmpgv) = newIO(); | |
8990e307 | 1346 | IoOFP(GvIO(tmpgv)) = IoIFP(GvIO(tmpgv)) = stdout; |
79072805 | 1347 | defoutgv = tmpgv; |
85e6fe83 | 1348 | tmpgv = gv_fetchpv("stdout",TRUE, SVt_PVIO); |
8990e307 | 1349 | GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(defoutgv)); |
79072805 LW |
1350 | SvMULTI_on(tmpgv); |
1351 | ||
85e6fe83 | 1352 | curoutgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); |
79072805 LW |
1353 | SvMULTI_on(curoutgv); |
1354 | if (!GvIO(curoutgv)) | |
1355 | GvIO(curoutgv) = newIO(); | |
8990e307 | 1356 | IoOFP(GvIO(curoutgv)) = IoIFP(GvIO(curoutgv)) = stderr; |
85e6fe83 | 1357 | tmpgv = gv_fetchpv("stderr",TRUE, SVt_PVIO); |
8990e307 | 1358 | GvIO(tmpgv) = (IO*)SvREFCNT_inc(GvIO(curoutgv)); |
79072805 LW |
1359 | SvMULTI_on(tmpgv); |
1360 | curoutgv = defoutgv; /* switch back to STDOUT */ | |
1361 | ||
1362 | statname = NEWSV(66,0); /* last filename we did stat on */ | |
79072805 | 1363 | } |
33b78306 | 1364 | |
79072805 LW |
1365 | static void |
1366 | init_postdump_symbols(argc,argv,env) | |
1367 | register int argc; | |
1368 | register char **argv; | |
1369 | register char **env; | |
33b78306 | 1370 | { |
79072805 LW |
1371 | char *s; |
1372 | SV *sv; | |
1373 | GV* tmpgv; | |
fe14fcc3 | 1374 | |
79072805 LW |
1375 | argc--,argv++; /* skip name of script */ |
1376 | if (doswitches) { | |
1377 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
1378 | if (!argv[0][1]) | |
1379 | break; | |
1380 | if (argv[0][1] == '-') { | |
1381 | argc--,argv++; | |
1382 | break; | |
1383 | } | |
93a17b20 | 1384 | if (s = strchr(argv[0], '=')) { |
79072805 | 1385 | *s++ = '\0'; |
85e6fe83 | 1386 | sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); |
79072805 LW |
1387 | } |
1388 | else | |
85e6fe83 | 1389 | sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); |
fe14fcc3 | 1390 | } |
79072805 LW |
1391 | } |
1392 | toptarget = NEWSV(0,0); | |
1393 | sv_upgrade(toptarget, SVt_PVFM); | |
1394 | sv_setpvn(toptarget, "", 0); | |
85e6fe83 LW |
1395 | tmpgv = gv_fetchpv("\001",TRUE, SVt_PV); |
1396 | bodytarget = GvSV(tmpgv); | |
79072805 LW |
1397 | sv_upgrade(bodytarget, SVt_PVFM); |
1398 | sv_setpvn(bodytarget, "", 0); | |
1399 | formtarget = bodytarget; | |
1400 | ||
79072805 | 1401 | tainted = 1; |
85e6fe83 | 1402 | if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { |
79072805 LW |
1403 | sv_setpv(GvSV(tmpgv),origfilename); |
1404 | magicname("0", "0", 1); | |
1405 | } | |
85e6fe83 | 1406 | if (tmpgv = gv_fetchpv("\024",TRUE, SVt_PV)) |
79072805 | 1407 | time(&basetime); |
85e6fe83 | 1408 | if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) |
79072805 | 1409 | sv_setpv(GvSV(tmpgv),origargv[0]); |
85e6fe83 | 1410 | if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { |
79072805 LW |
1411 | SvMULTI_on(argvgv); |
1412 | (void)gv_AVadd(argvgv); | |
1413 | av_clear(GvAVn(argvgv)); | |
1414 | for (; argc > 0; argc--,argv++) { | |
1415 | (void)av_push(GvAVn(argvgv),newSVpv(argv[0],0)); | |
1416 | } | |
1417 | } | |
85e6fe83 | 1418 | if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { |
79072805 LW |
1419 | HV *hv; |
1420 | SvMULTI_on(envgv); | |
1421 | hv = GvHVn(envgv); | |
463ee0b2 | 1422 | hv_clear(hv); |
8990e307 | 1423 | if (env != environ) { |
79072805 | 1424 | environ[0] = Nullch; |
8990e307 LW |
1425 | hv_magic(hv, envgv, 'E'); |
1426 | } | |
79072805 | 1427 | for (; *env; env++) { |
93a17b20 | 1428 | if (!(s = strchr(*env,'='))) |
79072805 LW |
1429 | continue; |
1430 | *s++ = '\0'; | |
1431 | sv = newSVpv(s--,0); | |
85e6fe83 | 1432 | sv_magic(sv, sv, 'e', *env, s - *env); |
79072805 LW |
1433 | (void)hv_store(hv, *env, s - *env, sv, 0); |
1434 | *s = '='; | |
fe14fcc3 | 1435 | } |
f511e57f | 1436 | hv_magic(hv, envgv, 'E'); |
79072805 | 1437 | } |
79072805 | 1438 | tainted = 0; |
85e6fe83 | 1439 | if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) |
79072805 LW |
1440 | sv_setiv(GvSV(tmpgv),(I32)getpid()); |
1441 | ||
33b78306 | 1442 | } |
34de22dd | 1443 | |
79072805 LW |
1444 | static void |
1445 | init_perllib() | |
34de22dd | 1446 | { |
85e6fe83 LW |
1447 | char *s; |
1448 | if (!tainting) { | |
1449 | s = getenv("PERL5LIB"); | |
1450 | if (s) | |
1451 | incpush(s); | |
1452 | else | |
1453 | incpush(getenv("PERLLIB")); | |
1454 | } | |
34de22dd | 1455 | |
79072805 | 1456 | #ifndef PRIVLIB |
85e6fe83 | 1457 | #define PRIVLIB "/usr/local/lib/perl5:/usr/local/lib/perl" |
34de22dd | 1458 | #endif |
79072805 LW |
1459 | incpush(PRIVLIB); |
1460 | (void)av_push(GvAVn(incgv),newSVpv(".",1)); | |
34de22dd | 1461 | } |
93a17b20 LW |
1462 | |
1463 | void | |
1464 | calllist(list) | |
1465 | AV* list; | |
1466 | { | |
93a17b20 LW |
1467 | jmp_buf oldtop; |
1468 | I32 sp = stack_sp - stack_base; | |
1469 | ||
8990e307 | 1470 | av_store(stack, ++sp, Nullsv); /* reserve spot for sub reference */ |
93a17b20 LW |
1471 | Copy(top_env, oldtop, 1, jmp_buf); |
1472 | ||
8990e307 LW |
1473 | while (AvFILL(list) >= 0) { |
1474 | CV *cv = (CV*)av_shift(list); | |
93a17b20 | 1475 | |
8990e307 | 1476 | SAVEFREESV(cv); |
85e6fe83 LW |
1477 | switch (setjmp(top_env)) { |
1478 | case 0: | |
8990e307 | 1479 | perl_callsv((SV*)cv, sp, G_SCALAR, 0, 0); |
85e6fe83 LW |
1480 | break; |
1481 | case 1: | |
1482 | statusvalue = 255; /* XXX I don't think we use 1 anymore. */ | |
1483 | /* FALL THROUGH */ | |
1484 | case 2: | |
1485 | /* my_exit() was called */ | |
1486 | curstash = defstash; | |
1487 | if (endav) | |
1488 | calllist(endav); | |
1489 | FREE_TMPS(); | |
1490 | if (statusvalue) { | |
1491 | if (list == beginav) | |
1492 | warn("BEGIN failed--execution aborted"); | |
1493 | else | |
1494 | warn("END failed--execution aborted"); | |
1495 | } | |
1496 | Copy(oldtop, top_env, 1, jmp_buf); | |
1497 | my_exit(statusvalue); | |
1498 | /* NOTREACHED */ | |
1499 | return; | |
1500 | case 3: | |
1501 | if (!restartop) { | |
1502 | fprintf(stderr, "panic: restartop\n"); | |
1503 | FREE_TMPS(); | |
1504 | break; | |
1505 | } | |
1506 | if (stack != mainstack) { | |
1507 | dSP; | |
1508 | SWITCHSTACK(stack, mainstack); | |
1509 | } | |
1510 | op = restartop; | |
1511 | restartop = 0; | |
1512 | run(); | |
1513 | break; | |
8990e307 | 1514 | } |
93a17b20 LW |
1515 | } |
1516 | ||
1517 | Copy(oldtop, top_env, 1, jmp_buf); | |
1518 | } | |
1519 |