Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 LW |
4 | * |
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. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never | |
12 | * come here, and I don't want to see no more magic,' he said, and fell silent." | |
79072805 LW |
13 | */ |
14 | ||
15 | #include "EXTERN.h" | |
16 | #include "perl.h" | |
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 | ||
c07a80fd | 24 | /* |
25 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
26 | */ | |
27 | ||
28 | struct magic_state { | |
29 | SV* mgs_sv; | |
30 | U32 mgs_flags; | |
31 | }; | |
32 | typedef struct magic_state MGS; | |
33 | ||
34 | static void restore_magic _((void *p)); | |
35 | ||
36 | static MGS * | |
37 | save_magic(sv) | |
38 | SV* sv; | |
39 | { | |
40 | MGS* mgs; | |
41 | ||
42 | assert(SvMAGICAL(sv)); | |
43 | ||
44 | mgs = (MGS*)safemalloc(sizeof(MGS)); | |
45 | mgs->mgs_sv = sv; | |
46 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
47 | SAVEDESTRUCTOR(restore_magic, mgs); | |
48 | ||
49 | SvMAGICAL_off(sv); | |
50 | SvREADONLY_off(sv); | |
51 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
52 | ||
53 | return mgs; | |
54 | } | |
55 | ||
56 | static void | |
57 | restore_magic(p) | |
58 | void* p; | |
59 | { | |
60 | MGS *mgs = (MGS*)p; | |
61 | SV* sv = mgs->mgs_sv; | |
62 | ||
63 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
64 | { | |
65 | if (mgs->mgs_flags) | |
66 | SvFLAGS(sv) |= mgs->mgs_flags; | |
67 | else | |
68 | mg_magical(sv); | |
69 | if (SvGMAGICAL(sv)) | |
70 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
71 | } | |
72 | ||
73 | Safefree(mgs); | |
74 | } | |
75 | ||
8e07c86e | 76 | |
8990e307 LW |
77 | void |
78 | mg_magical(sv) | |
79 | SV* sv; | |
80 | { | |
81 | MAGIC* mg; | |
82 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
83 | MGVTBL* vtbl = mg->mg_virtual; | |
84 | if (vtbl) { | |
a0d0e21e | 85 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
86 | SvGMAGICAL_on(sv); |
87 | if (vtbl->svt_set) | |
88 | SvSMAGICAL_on(sv); | |
89 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) | |
90 | SvRMAGICAL_on(sv); | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
79072805 LW |
95 | int |
96 | mg_get(sv) | |
97 | SV* sv; | |
98 | { | |
c07a80fd | 99 | MGS* mgs; |
79072805 | 100 | MAGIC* mg; |
c6496cc7 | 101 | MAGIC** mgp; |
463ee0b2 | 102 | |
c07a80fd | 103 | ENTER; |
104 | mgs = save_magic(sv); | |
463ee0b2 | 105 | |
c6496cc7 | 106 | mgp = &SvMAGIC(sv); |
107 | while ((mg = *mgp) != 0) { | |
79072805 | 108 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e | 109 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
79072805 | 110 | (*vtbl->svt_get)(sv, mg); |
c6496cc7 | 111 | /* Ignore this magic if it's been deleted */ |
112 | if (*mgp == mg && (mg->mg_flags & MGf_GSKIP)) | |
c07a80fd | 113 | mgs->mgs_flags = 0; |
a0d0e21e | 114 | } |
c6496cc7 | 115 | /* Advance to next magic (complicated by possible deletion) */ |
116 | if (*mgp == mg) | |
117 | mgp = &mg->mg_moremagic; | |
79072805 | 118 | } |
463ee0b2 | 119 | |
c07a80fd | 120 | LEAVE; |
79072805 LW |
121 | return 0; |
122 | } | |
123 | ||
124 | int | |
125 | mg_set(sv) | |
126 | SV* sv; | |
127 | { | |
c07a80fd | 128 | MGS* mgs; |
79072805 | 129 | MAGIC* mg; |
463ee0b2 LW |
130 | MAGIC* nextmg; |
131 | ||
c07a80fd | 132 | ENTER; |
133 | mgs = save_magic(sv); | |
463ee0b2 LW |
134 | |
135 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 136 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 137 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
138 | if (mg->mg_flags & MGf_GSKIP) { |
139 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
c07a80fd | 140 | mgs->mgs_flags = 0; |
a0d0e21e | 141 | } |
79072805 LW |
142 | if (vtbl && vtbl->svt_set) |
143 | (*vtbl->svt_set)(sv, mg); | |
144 | } | |
463ee0b2 | 145 | |
c07a80fd | 146 | LEAVE; |
79072805 LW |
147 | return 0; |
148 | } | |
149 | ||
150 | U32 | |
151 | mg_len(sv) | |
152 | SV* sv; | |
153 | { | |
154 | MAGIC* mg; | |
748a9306 | 155 | char *junk; |
463ee0b2 | 156 | STRLEN len; |
463ee0b2 | 157 | |
79072805 LW |
158 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
159 | MGVTBL* vtbl = mg->mg_virtual; | |
85e6fe83 | 160 | if (vtbl && vtbl->svt_len) { |
c07a80fd | 161 | ENTER; |
162 | save_magic(sv); | |
a0d0e21e | 163 | /* omit MGf_GSKIP -- not changed here */ |
85e6fe83 | 164 | len = (*vtbl->svt_len)(sv, mg); |
c07a80fd | 165 | LEAVE; |
85e6fe83 LW |
166 | return len; |
167 | } | |
168 | } | |
169 | ||
748a9306 | 170 | junk = SvPV(sv, len); |
463ee0b2 | 171 | return len; |
79072805 LW |
172 | } |
173 | ||
174 | int | |
175 | mg_clear(sv) | |
176 | SV* sv; | |
177 | { | |
178 | MAGIC* mg; | |
463ee0b2 | 179 | |
c07a80fd | 180 | ENTER; |
181 | save_magic(sv); | |
463ee0b2 | 182 | |
79072805 LW |
183 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
184 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
185 | /* omit GSKIP -- never set here */ |
186 | ||
79072805 LW |
187 | if (vtbl && vtbl->svt_clear) |
188 | (*vtbl->svt_clear)(sv, mg); | |
189 | } | |
463ee0b2 | 190 | |
c07a80fd | 191 | LEAVE; |
79072805 LW |
192 | return 0; |
193 | } | |
194 | ||
93a17b20 LW |
195 | MAGIC* |
196 | mg_find(sv, type) | |
197 | SV* sv; | |
a0d0e21e | 198 | int type; |
93a17b20 LW |
199 | { |
200 | MAGIC* mg; | |
93a17b20 LW |
201 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
202 | if (mg->mg_type == type) | |
203 | return mg; | |
204 | } | |
205 | return 0; | |
206 | } | |
207 | ||
79072805 | 208 | int |
463ee0b2 | 209 | mg_copy(sv, nsv, key, klen) |
79072805 | 210 | SV* sv; |
463ee0b2 LW |
211 | SV* nsv; |
212 | char *key; | |
213 | STRLEN klen; | |
79072805 | 214 | { |
463ee0b2 | 215 | int count = 0; |
79072805 | 216 | MAGIC* mg; |
463ee0b2 LW |
217 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
218 | if (isUPPER(mg->mg_type)) { | |
a0d0e21e | 219 | sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 220 | count++; |
79072805 | 221 | } |
79072805 | 222 | } |
463ee0b2 | 223 | return count; |
79072805 LW |
224 | } |
225 | ||
226 | int | |
463ee0b2 | 227 | mg_free(sv) |
79072805 LW |
228 | SV* sv; |
229 | { | |
230 | MAGIC* mg; | |
231 | MAGIC* moremagic; | |
232 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
233 | MGVTBL* vtbl = mg->mg_virtual; | |
234 | moremagic = mg->mg_moremagic; | |
235 | if (vtbl && vtbl->svt_free) | |
236 | (*vtbl->svt_free)(sv, mg); | |
93a17b20 | 237 | if (mg->mg_ptr && mg->mg_type != 'g') |
79072805 | 238 | Safefree(mg->mg_ptr); |
85e6fe83 | 239 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 | 240 | SvREFCNT_dec(mg->mg_obj); |
79072805 LW |
241 | Safefree(mg); |
242 | } | |
243 | SvMAGIC(sv) = 0; | |
244 | return 0; | |
245 | } | |
246 | ||
247 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) | |
248 | #include <signal.h> | |
249 | #endif | |
250 | ||
93a17b20 LW |
251 | U32 |
252 | magic_len(sv, mg) | |
253 | SV *sv; | |
254 | MAGIC *mg; | |
255 | { | |
256 | register I32 paren; | |
257 | register char *s; | |
258 | register I32 i; | |
748a9306 | 259 | char *t; |
93a17b20 LW |
260 | |
261 | switch (*mg->mg_ptr) { | |
262 | case '1': case '2': case '3': case '4': | |
263 | case '5': case '6': case '7': case '8': case '9': case '&': | |
264 | if (curpm) { | |
265 | paren = atoi(mg->mg_ptr); | |
266 | getparen: | |
267 | if (curpm->op_pmregexp && | |
268 | paren <= curpm->op_pmregexp->nparens && | |
748a9306 LW |
269 | (s = curpm->op_pmregexp->startp[paren]) && |
270 | (t = curpm->op_pmregexp->endp[paren]) ) { | |
271 | i = t - s; | |
93a17b20 LW |
272 | if (i >= 0) |
273 | return i; | |
93a17b20 | 274 | } |
93a17b20 | 275 | } |
748a9306 | 276 | return 0; |
93a17b20 LW |
277 | break; |
278 | case '+': | |
279 | if (curpm) { | |
280 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
281 | if (!paren) |
282 | return 0; | |
93a17b20 LW |
283 | goto getparen; |
284 | } | |
748a9306 | 285 | return 0; |
93a17b20 LW |
286 | break; |
287 | case '`': | |
288 | if (curpm) { | |
289 | if (curpm->op_pmregexp && | |
290 | (s = curpm->op_pmregexp->subbeg) ) { | |
291 | i = curpm->op_pmregexp->startp[0] - s; | |
292 | if (i >= 0) | |
293 | return i; | |
93a17b20 | 294 | } |
93a17b20 | 295 | } |
748a9306 | 296 | return 0; |
93a17b20 LW |
297 | case '\'': |
298 | if (curpm) { | |
299 | if (curpm->op_pmregexp && | |
300 | (s = curpm->op_pmregexp->endp[0]) ) { | |
301 | return (STRLEN) (curpm->op_pmregexp->subend - s); | |
302 | } | |
93a17b20 | 303 | } |
748a9306 | 304 | return 0; |
93a17b20 LW |
305 | case ',': |
306 | return (STRLEN)ofslen; | |
307 | case '\\': | |
308 | return (STRLEN)orslen; | |
309 | } | |
310 | magic_get(sv,mg); | |
311 | if (!SvPOK(sv) && SvNIOK(sv)) | |
463ee0b2 | 312 | sv_2pv(sv, &na); |
93a17b20 LW |
313 | if (SvPOK(sv)) |
314 | return SvCUR(sv); | |
315 | return 0; | |
316 | } | |
317 | ||
79072805 LW |
318 | int |
319 | magic_get(sv, mg) | |
320 | SV *sv; | |
321 | MAGIC *mg; | |
322 | { | |
323 | register I32 paren; | |
324 | register char *s; | |
325 | register I32 i; | |
748a9306 | 326 | char *t; |
79072805 LW |
327 | |
328 | switch (*mg->mg_ptr) { | |
748a9306 LW |
329 | case '\001': /* ^A */ |
330 | sv_setsv(sv, bodytarget); | |
331 | break; | |
79072805 LW |
332 | case '\004': /* ^D */ |
333 | sv_setiv(sv,(I32)(debug & 32767)); | |
334 | break; | |
335 | case '\006': /* ^F */ | |
336 | sv_setiv(sv,(I32)maxsysfd); | |
337 | break; | |
a0d0e21e LW |
338 | case '\010': /* ^H */ |
339 | sv_setiv(sv,(I32)hints); | |
340 | break; | |
79072805 LW |
341 | case '\t': /* ^I */ |
342 | if (inplace) | |
343 | sv_setpv(sv, inplace); | |
344 | else | |
345 | sv_setsv(sv,&sv_undef); | |
346 | break; | |
347 | case '\020': /* ^P */ | |
348 | sv_setiv(sv,(I32)perldb); | |
349 | break; | |
350 | case '\024': /* ^T */ | |
351 | sv_setiv(sv,(I32)basetime); | |
352 | break; | |
353 | case '\027': /* ^W */ | |
354 | sv_setiv(sv,(I32)dowarn); | |
355 | break; | |
356 | case '1': case '2': case '3': case '4': | |
357 | case '5': case '6': case '7': case '8': case '9': case '&': | |
358 | if (curpm) { | |
359 | paren = atoi(GvENAME(mg->mg_obj)); | |
360 | getparen: | |
361 | if (curpm->op_pmregexp && | |
362 | paren <= curpm->op_pmregexp->nparens && | |
a0d0e21e | 363 | (s = curpm->op_pmregexp->startp[paren]) && |
748a9306 LW |
364 | (t = curpm->op_pmregexp->endp[paren]) ) { |
365 | i = t - s; | |
366 | if (i >= 0) { | |
367 | MAGIC *tmg; | |
79072805 | 368 | sv_setpvn(sv,s,i); |
748a9306 LW |
369 | if (tainting && (tmg = mg_find(sv,'t'))) |
370 | tmg->mg_len = 0; /* guarantee $1 untainted */ | |
371 | break; | |
372 | } | |
79072805 | 373 | } |
79072805 | 374 | } |
748a9306 | 375 | sv_setsv(sv,&sv_undef); |
79072805 LW |
376 | break; |
377 | case '+': | |
378 | if (curpm) { | |
379 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
380 | if (paren) |
381 | goto getparen; | |
79072805 | 382 | } |
748a9306 | 383 | sv_setsv(sv,&sv_undef); |
79072805 LW |
384 | break; |
385 | case '`': | |
386 | if (curpm) { | |
387 | if (curpm->op_pmregexp && | |
388 | (s = curpm->op_pmregexp->subbeg) ) { | |
389 | i = curpm->op_pmregexp->startp[0] - s; | |
748a9306 | 390 | if (i >= 0) { |
79072805 | 391 | sv_setpvn(sv,s,i); |
748a9306 LW |
392 | break; |
393 | } | |
79072805 | 394 | } |
79072805 | 395 | } |
748a9306 | 396 | sv_setsv(sv,&sv_undef); |
79072805 LW |
397 | break; |
398 | case '\'': | |
399 | if (curpm) { | |
400 | if (curpm->op_pmregexp && | |
401 | (s = curpm->op_pmregexp->endp[0]) ) { | |
402 | sv_setpvn(sv,s, curpm->op_pmregexp->subend - s); | |
748a9306 | 403 | break; |
79072805 | 404 | } |
79072805 | 405 | } |
748a9306 | 406 | sv_setsv(sv,&sv_undef); |
79072805 LW |
407 | break; |
408 | case '.': | |
409 | #ifndef lint | |
a0d0e21e | 410 | if (GvIO(last_in_gv)) { |
8990e307 | 411 | sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv))); |
79072805 LW |
412 | } |
413 | #endif | |
414 | break; | |
415 | case '?': | |
416 | sv_setiv(sv,(I32)statusvalue); | |
417 | break; | |
418 | case '^': | |
a0d0e21e | 419 | s = IoTOP_NAME(GvIOp(defoutgv)); |
79072805 LW |
420 | if (s) |
421 | sv_setpv(sv,s); | |
422 | else { | |
423 | sv_setpv(sv,GvENAME(defoutgv)); | |
424 | sv_catpv(sv,"_TOP"); | |
425 | } | |
426 | break; | |
427 | case '~': | |
a0d0e21e | 428 | s = IoFMT_NAME(GvIOp(defoutgv)); |
79072805 LW |
429 | if (!s) |
430 | s = GvENAME(defoutgv); | |
431 | sv_setpv(sv,s); | |
432 | break; | |
433 | #ifndef lint | |
434 | case '=': | |
a0d0e21e | 435 | sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv))); |
79072805 LW |
436 | break; |
437 | case '-': | |
a0d0e21e | 438 | sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 LW |
439 | break; |
440 | case '%': | |
a0d0e21e | 441 | sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv))); |
79072805 LW |
442 | break; |
443 | #endif | |
444 | case ':': | |
445 | break; | |
446 | case '/': | |
447 | break; | |
448 | case '[': | |
a0d0e21e | 449 | sv_setiv(sv,(I32)curcop->cop_arybase); |
79072805 LW |
450 | break; |
451 | case '|': | |
a0d0e21e | 452 | sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
453 | break; |
454 | case ',': | |
455 | sv_setpvn(sv,ofs,ofslen); | |
456 | break; | |
457 | case '\\': | |
458 | sv_setpvn(sv,ors,orslen); | |
459 | break; | |
460 | case '#': | |
461 | sv_setpv(sv,ofmt); | |
462 | break; | |
463 | case '!': | |
a5f75d66 AD |
464 | #ifdef VMS |
465 | sv_setnv(sv,(double)((errno == EVMSERR) ? vaxc$errno : errno)); | |
466 | #else | |
79072805 | 467 | sv_setnv(sv,(double)errno); |
a5f75d66 | 468 | #endif |
2304df62 | 469 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
79072805 LW |
470 | SvNOK_on(sv); /* what a wonderful hack! */ |
471 | break; | |
472 | case '<': | |
473 | sv_setiv(sv,(I32)uid); | |
474 | break; | |
475 | case '>': | |
476 | sv_setiv(sv,(I32)euid); | |
477 | break; | |
478 | case '(': | |
479 | s = buf; | |
480 | (void)sprintf(s,"%d",(int)gid); | |
481 | goto add_groups; | |
482 | case ')': | |
483 | s = buf; | |
484 | (void)sprintf(s,"%d",(int)egid); | |
485 | add_groups: | |
486 | while (*s) s++; | |
487 | #ifdef HAS_GETGROUPS | |
488 | #ifndef NGROUPS | |
489 | #define NGROUPS 32 | |
490 | #endif | |
491 | { | |
a0d0e21e | 492 | Groups_t gary[NGROUPS]; |
79072805 LW |
493 | |
494 | i = getgroups(NGROUPS,gary); | |
495 | while (--i >= 0) { | |
496 | (void)sprintf(s," %ld", (long)gary[i]); | |
497 | while (*s) s++; | |
498 | } | |
499 | } | |
500 | #endif | |
501 | sv_setpv(sv,buf); | |
502 | break; | |
503 | case '*': | |
504 | break; | |
505 | case '0': | |
506 | break; | |
507 | } | |
a0d0e21e | 508 | return 0; |
79072805 LW |
509 | } |
510 | ||
511 | int | |
512 | magic_getuvar(sv, mg) | |
513 | SV *sv; | |
514 | MAGIC *mg; | |
515 | { | |
516 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
517 | ||
518 | if (uf && uf->uf_val) | |
519 | (*uf->uf_val)(uf->uf_index, sv); | |
520 | return 0; | |
521 | } | |
522 | ||
523 | int | |
524 | magic_setenv(sv,mg) | |
525 | SV* sv; | |
526 | MAGIC* mg; | |
527 | { | |
528 | register char *s; | |
a0d0e21e LW |
529 | STRLEN len; |
530 | I32 i; | |
531 | s = SvPV(sv,len); | |
79072805 | 532 | my_setenv(mg->mg_ptr,s); |
a0d0e21e LW |
533 | #ifdef DYNAMIC_ENV_FETCH |
534 | /* We just undefd an environment var. Is a replacement */ | |
535 | /* waiting in the wings? */ | |
536 | if (!len) { | |
537 | SV **envsvp; | |
538 | if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE)) | |
539 | s = SvPV(*envsvp,len); | |
540 | } | |
541 | #endif | |
79072805 LW |
542 | /* And you'll never guess what the dog had */ |
543 | /* in its mouth... */ | |
463ee0b2 LW |
544 | if (tainting) { |
545 | if (s && strEQ(mg->mg_ptr,"PATH")) { | |
a0d0e21e | 546 | char *strend = s + len; |
463ee0b2 LW |
547 | |
548 | while (s < strend) { | |
549 | s = cpytill(tokenbuf,s,strend,':',&i); | |
550 | s++; | |
551 | if (*tokenbuf != '/' | |
a0d0e21e | 552 | || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
8990e307 | 553 | MgTAINTEDDIR_on(mg); |
463ee0b2 | 554 | } |
79072805 LW |
555 | } |
556 | } | |
79072805 LW |
557 | return 0; |
558 | } | |
559 | ||
560 | int | |
85e6fe83 LW |
561 | magic_clearenv(sv,mg) |
562 | SV* sv; | |
563 | MAGIC* mg; | |
564 | { | |
565 | my_setenv(mg->mg_ptr,Nullch); | |
566 | return 0; | |
567 | } | |
568 | ||
3d37d572 | 569 | #ifdef HAS_SIGACTION |
570 | /* set up reliable signal() clone */ | |
571 | ||
572 | typedef void (*Sigfunc) _((int)); | |
573 | ||
574 | static | |
575 | Sigfunc rsignal(signo,handler) | |
576 | int signo; | |
577 | Sigfunc handler; | |
578 | { | |
579 | struct sigaction act,oact; | |
580 | ||
581 | act.sa_handler = handler; | |
582 | sigemptyset(&act.sa_mask); | |
583 | act.sa_flags = 0; | |
584 | #ifdef SIGALRM | |
585 | if (signo == SIGALRM) { | |
586 | #else | |
587 | if (0) { | |
588 | #endif | |
589 | #ifdef SA_INTERRUPT | |
590 | act.sa_flags |= SA_INTERRUPT; /* SunOS */ | |
591 | #endif | |
592 | } else { | |
593 | #ifdef SA_RESTART | |
594 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
595 | #endif | |
596 | } | |
597 | if (sigaction(signo, &act, &oact) < 0) | |
598 | return(SIG_ERR); | |
599 | else | |
600 | return(oact.sa_handler); | |
601 | } | |
602 | ||
603 | #else | |
604 | ||
605 | /* ah well, so much for reliability */ | |
606 | ||
607 | #define rsignal(x,y) signal(x,y) | |
608 | ||
609 | #endif | |
610 | ||
611 | ||
85e6fe83 | 612 | int |
79072805 LW |
613 | magic_setsig(sv,mg) |
614 | SV* sv; | |
615 | MAGIC* mg; | |
616 | { | |
617 | register char *s; | |
618 | I32 i; | |
748a9306 | 619 | SV** svp; |
a0d0e21e | 620 | |
748a9306 LW |
621 | s = mg->mg_ptr; |
622 | if (*s == '_') { | |
623 | if (strEQ(s,"__DIE__")) | |
624 | svp = &diehook; | |
625 | else if (strEQ(s,"__WARN__")) | |
626 | svp = &warnhook; | |
627 | else if (strEQ(s,"__PARSE__")) | |
628 | svp = &parsehook; | |
629 | else | |
630 | croak("No such hook: %s", s); | |
631 | i = 0; | |
4633a7c4 LW |
632 | if (*svp) { |
633 | SvREFCNT_dec(*svp); | |
634 | *svp = 0; | |
635 | } | |
748a9306 LW |
636 | } |
637 | else { | |
638 | i = whichsig(s); /* ...no, a brick */ | |
639 | if (!i) { | |
640 | if (dowarn || strEQ(s,"ALARM")) | |
641 | warn("No such signal: SIG%s", s); | |
642 | return 0; | |
643 | } | |
644 | } | |
a0d0e21e | 645 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 646 | if (i) |
3d37d572 | 647 | (void)rsignal(i,sighandler); |
748a9306 LW |
648 | else |
649 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
650 | return 0; |
651 | } | |
652 | s = SvPV_force(sv,na); | |
748a9306 LW |
653 | if (strEQ(s,"IGNORE")) { |
654 | if (i) | |
3d37d572 | 655 | (void)rsignal(i,SIG_IGN); |
748a9306 LW |
656 | else |
657 | *svp = 0; | |
658 | } | |
659 | else if (strEQ(s,"DEFAULT") || !*s) { | |
660 | if (i) | |
3d37d572 | 661 | (void)rsignal(i,SIG_DFL); |
748a9306 LW |
662 | else |
663 | *svp = 0; | |
664 | } | |
79072805 | 665 | else { |
2304df62 AD |
666 | if (!strchr(s,':') && !strchr(s,'\'')) { |
667 | sprintf(tokenbuf, "main::%s",s); | |
79072805 LW |
668 | sv_setpv(sv,tokenbuf); |
669 | } | |
748a9306 | 670 | if (i) |
3d37d572 | 671 | (void)rsignal(i,sighandler); |
748a9306 LW |
672 | else |
673 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
674 | } |
675 | return 0; | |
676 | } | |
677 | ||
678 | int | |
463ee0b2 | 679 | magic_setisa(sv,mg) |
79072805 LW |
680 | SV* sv; |
681 | MAGIC* mg; | |
682 | { | |
463ee0b2 LW |
683 | sub_generation++; |
684 | return 0; | |
685 | } | |
686 | ||
a0d0e21e LW |
687 | #ifdef OVERLOAD |
688 | ||
463ee0b2 | 689 | int |
a0d0e21e | 690 | magic_setamagic(sv,mg) |
463ee0b2 LW |
691 | SV* sv; |
692 | MAGIC* mg; | |
693 | { | |
a0d0e21e LW |
694 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
695 | amagic_generation++; | |
463ee0b2 | 696 | |
a0d0e21e LW |
697 | return 0; |
698 | } | |
699 | #endif /* OVERLOAD */ | |
463ee0b2 | 700 | |
a0d0e21e LW |
701 | static int |
702 | magic_methpack(sv,mg,meth) | |
703 | SV* sv; | |
704 | MAGIC* mg; | |
705 | char *meth; | |
706 | { | |
707 | dSP; | |
463ee0b2 | 708 | |
a0d0e21e LW |
709 | ENTER; |
710 | SAVETMPS; | |
711 | PUSHMARK(sp); | |
712 | EXTEND(sp, 2); | |
713 | PUSHs(mg->mg_obj); | |
463ee0b2 | 714 | if (mg->mg_ptr) |
a0d0e21e LW |
715 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
716 | else if (mg->mg_type == 'p') | |
717 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
718 | PUTBACK; |
719 | ||
a0d0e21e LW |
720 | if (perl_call_method(meth, G_SCALAR)) |
721 | sv_setsv(sv, *stack_sp--); | |
463ee0b2 | 722 | |
a0d0e21e LW |
723 | FREETMPS; |
724 | LEAVE; | |
725 | return 0; | |
726 | } | |
463ee0b2 | 727 | |
a0d0e21e LW |
728 | int |
729 | magic_getpack(sv,mg) | |
730 | SV* sv; | |
731 | MAGIC* mg; | |
732 | { | |
733 | magic_methpack(sv,mg,"FETCH"); | |
734 | if (mg->mg_ptr) | |
735 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
736 | return 0; |
737 | } | |
738 | ||
739 | int | |
740 | magic_setpack(sv,mg) | |
741 | SV* sv; | |
742 | MAGIC* mg; | |
743 | { | |
463ee0b2 | 744 | dSP; |
463ee0b2 | 745 | |
a0d0e21e LW |
746 | PUSHMARK(sp); |
747 | EXTEND(sp, 3); | |
748 | PUSHs(mg->mg_obj); | |
463ee0b2 | 749 | if (mg->mg_ptr) |
a0d0e21e LW |
750 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
751 | else if (mg->mg_type == 'p') | |
752 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
753 | PUSHs(sv); |
754 | PUTBACK; | |
755 | ||
a0d0e21e | 756 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
757 | |
758 | return 0; | |
759 | } | |
760 | ||
761 | int | |
762 | magic_clearpack(sv,mg) | |
763 | SV* sv; | |
764 | MAGIC* mg; | |
765 | { | |
a0d0e21e LW |
766 | return magic_methpack(sv,mg,"DELETE"); |
767 | } | |
463ee0b2 | 768 | |
a0d0e21e LW |
769 | int magic_wipepack(sv,mg) |
770 | SV* sv; | |
771 | MAGIC* mg; | |
772 | { | |
773 | dSP; | |
463ee0b2 | 774 | |
a0d0e21e LW |
775 | PUSHMARK(sp); |
776 | XPUSHs(mg->mg_obj); | |
463ee0b2 | 777 | PUTBACK; |
463ee0b2 | 778 | |
a0d0e21e | 779 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
780 | |
781 | return 0; | |
782 | } | |
783 | ||
784 | int | |
785 | magic_nextpack(sv,mg,key) | |
786 | SV* sv; | |
787 | MAGIC* mg; | |
788 | SV* key; | |
789 | { | |
463ee0b2 | 790 | dSP; |
a0d0e21e | 791 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
792 | |
793 | ENTER; | |
a0d0e21e LW |
794 | SAVETMPS; |
795 | PUSHMARK(sp); | |
796 | EXTEND(sp, 2); | |
797 | PUSHs(mg->mg_obj); | |
463ee0b2 LW |
798 | if (SvOK(key)) |
799 | PUSHs(key); | |
800 | PUTBACK; | |
801 | ||
a0d0e21e LW |
802 | if (perl_call_method(meth, G_SCALAR)) |
803 | sv_setsv(key, *stack_sp--); | |
463ee0b2 | 804 | |
a0d0e21e LW |
805 | FREETMPS; |
806 | LEAVE; | |
79072805 LW |
807 | return 0; |
808 | } | |
809 | ||
810 | int | |
a0d0e21e LW |
811 | magic_existspack(sv,mg) |
812 | SV* sv; | |
813 | MAGIC* mg; | |
814 | { | |
815 | return magic_methpack(sv,mg,"EXISTS"); | |
816 | } | |
817 | ||
818 | int | |
79072805 LW |
819 | magic_setdbline(sv,mg) |
820 | SV* sv; | |
821 | MAGIC* mg; | |
822 | { | |
823 | OP *o; | |
824 | I32 i; | |
825 | GV* gv; | |
826 | SV** svp; | |
827 | ||
828 | gv = DBline; | |
829 | i = SvTRUE(sv); | |
830 | svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE); | |
8990e307 | 831 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 832 | o->op_private = i; |
79072805 LW |
833 | else |
834 | warn("Can't break at that line\n"); | |
835 | return 0; | |
836 | } | |
837 | ||
838 | int | |
839 | magic_getarylen(sv,mg) | |
840 | SV* sv; | |
841 | MAGIC* mg; | |
842 | { | |
a0d0e21e | 843 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); |
79072805 LW |
844 | return 0; |
845 | } | |
846 | ||
847 | int | |
848 | magic_setarylen(sv,mg) | |
849 | SV* sv; | |
850 | MAGIC* mg; | |
851 | { | |
a0d0e21e LW |
852 | av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase); |
853 | return 0; | |
854 | } | |
855 | ||
856 | int | |
857 | magic_getpos(sv,mg) | |
858 | SV* sv; | |
859 | MAGIC* mg; | |
860 | { | |
861 | SV* lsv = LvTARG(sv); | |
862 | ||
863 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
864 | mg = mg_find(lsv, 'g'); | |
865 | if (mg && mg->mg_len >= 0) { | |
866 | sv_setiv(sv, mg->mg_len + curcop->cop_arybase); | |
867 | return 0; | |
868 | } | |
869 | } | |
870 | (void)SvOK_off(sv); | |
871 | return 0; | |
872 | } | |
873 | ||
874 | int | |
875 | magic_setpos(sv,mg) | |
876 | SV* sv; | |
877 | MAGIC* mg; | |
878 | { | |
879 | SV* lsv = LvTARG(sv); | |
880 | SSize_t pos; | |
881 | STRLEN len; | |
882 | ||
883 | mg = 0; | |
884 | ||
885 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
886 | mg = mg_find(lsv, 'g'); | |
887 | if (!mg) { | |
888 | if (!SvOK(sv)) | |
889 | return 0; | |
890 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
891 | mg = mg_find(lsv, 'g'); | |
892 | } | |
893 | else if (!SvOK(sv)) { | |
894 | mg->mg_len = -1; | |
895 | return 0; | |
896 | } | |
897 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
898 | ||
899 | pos = SvIV(sv) - curcop->cop_arybase; | |
900 | if (pos < 0) { | |
901 | pos += len; | |
902 | if (pos < 0) | |
903 | pos = 0; | |
904 | } | |
905 | else if (pos > len) | |
906 | pos = len; | |
907 | mg->mg_len = pos; | |
908 | ||
79072805 LW |
909 | return 0; |
910 | } | |
911 | ||
912 | int | |
913 | magic_getglob(sv,mg) | |
914 | SV* sv; | |
915 | MAGIC* mg; | |
916 | { | |
917 | gv_efullname(sv,((GV*)sv));/* a gv value, be nice */ | |
918 | return 0; | |
919 | } | |
920 | ||
921 | int | |
922 | magic_setglob(sv,mg) | |
923 | SV* sv; | |
924 | MAGIC* mg; | |
925 | { | |
926 | register char *s; | |
927 | GV* gv; | |
928 | ||
929 | if (!SvOK(sv)) | |
930 | return 0; | |
463ee0b2 | 931 | s = SvPV(sv, na); |
79072805 LW |
932 | if (*s == '*' && s[1]) |
933 | s++; | |
85e6fe83 | 934 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
935 | if (sv == (SV*)gv) |
936 | return 0; | |
937 | if (GvGP(sv)) | |
938 | gp_free(sv); | |
939 | GvGP(sv) = gp_ref(GvGP(gv)); | |
940 | if (!GvAV(gv)) | |
941 | gv_AVadd(gv); | |
942 | if (!GvHV(gv)) | |
943 | gv_HVadd(gv); | |
a0d0e21e LW |
944 | if (!GvIOp(gv)) |
945 | GvIOp(gv) = newIO(); | |
79072805 LW |
946 | return 0; |
947 | } | |
948 | ||
949 | int | |
950 | magic_setsubstr(sv,mg) | |
951 | SV* sv; | |
952 | MAGIC* mg; | |
953 | { | |
8990e307 LW |
954 | STRLEN len; |
955 | char *tmps = SvPV(sv,len); | |
956 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
957 | return 0; |
958 | } | |
959 | ||
960 | int | |
463ee0b2 LW |
961 | magic_gettaint(sv,mg) |
962 | SV* sv; | |
963 | MAGIC* mg; | |
964 | { | |
748a9306 LW |
965 | if (mg->mg_len & 1) |
966 | tainted = TRUE; | |
967 | else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */ | |
968 | tainted = TRUE; | |
463ee0b2 LW |
969 | return 0; |
970 | } | |
971 | ||
972 | int | |
973 | magic_settaint(sv,mg) | |
974 | SV* sv; | |
975 | MAGIC* mg; | |
976 | { | |
748a9306 LW |
977 | if (localizing) { |
978 | if (localizing == 1) | |
979 | mg->mg_len <<= 1; | |
980 | else | |
981 | mg->mg_len >>= 1; | |
a0d0e21e | 982 | } |
748a9306 LW |
983 | else if (tainted) |
984 | mg->mg_len |= 1; | |
985 | else | |
986 | mg->mg_len &= ~1; | |
463ee0b2 LW |
987 | return 0; |
988 | } | |
989 | ||
990 | int | |
79072805 LW |
991 | magic_setvec(sv,mg) |
992 | SV* sv; | |
993 | MAGIC* mg; | |
994 | { | |
995 | do_vecset(sv); /* XXX slurp this routine */ | |
996 | return 0; | |
997 | } | |
998 | ||
999 | int | |
93a17b20 LW |
1000 | magic_setmglob(sv,mg) |
1001 | SV* sv; | |
1002 | MAGIC* mg; | |
1003 | { | |
a0d0e21e | 1004 | mg->mg_len = -1; |
c6496cc7 | 1005 | SvSCREAM_off(sv); |
93a17b20 LW |
1006 | return 0; |
1007 | } | |
1008 | ||
1009 | int | |
79072805 LW |
1010 | magic_setbm(sv,mg) |
1011 | SV* sv; | |
1012 | MAGIC* mg; | |
1013 | { | |
463ee0b2 | 1014 | sv_unmagic(sv, 'B'); |
79072805 LW |
1015 | SvVALID_off(sv); |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | int | |
1020 | magic_setuvar(sv,mg) | |
1021 | SV* sv; | |
1022 | MAGIC* mg; | |
1023 | { | |
1024 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1025 | ||
1026 | if (uf && uf->uf_set) | |
1027 | (*uf->uf_set)(uf->uf_index, sv); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | int | |
1032 | magic_set(sv,mg) | |
1033 | SV* sv; | |
1034 | MAGIC* mg; | |
1035 | { | |
1036 | register char *s; | |
1037 | I32 i; | |
8990e307 | 1038 | STRLEN len; |
79072805 | 1039 | switch (*mg->mg_ptr) { |
748a9306 LW |
1040 | case '\001': /* ^A */ |
1041 | sv_setsv(bodytarget, sv); | |
1042 | break; | |
79072805 | 1043 | case '\004': /* ^D */ |
8990e307 | 1044 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1045 | DEBUG_x(dump_all()); |
1046 | break; | |
1047 | case '\006': /* ^F */ | |
463ee0b2 | 1048 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1049 | break; |
a0d0e21e LW |
1050 | case '\010': /* ^H */ |
1051 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1052 | break; | |
79072805 LW |
1053 | case '\t': /* ^I */ |
1054 | if (inplace) | |
1055 | Safefree(inplace); | |
1056 | if (SvOK(sv)) | |
a0d0e21e | 1057 | inplace = savepv(SvPV(sv,na)); |
79072805 LW |
1058 | else |
1059 | inplace = Nullch; | |
1060 | break; | |
1061 | case '\020': /* ^P */ | |
463ee0b2 | 1062 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1063 | if (i != perldb) { |
1064 | if (perldb) | |
1065 | oldlastpm = curpm; | |
1066 | else | |
1067 | curpm = oldlastpm; | |
1068 | } | |
1069 | perldb = i; | |
1070 | break; | |
1071 | case '\024': /* ^T */ | |
85e6fe83 | 1072 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1073 | break; |
1074 | case '\027': /* ^W */ | |
463ee0b2 | 1075 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1076 | break; |
1077 | case '.': | |
748a9306 LW |
1078 | if (localizing) { |
1079 | if (localizing == 1) | |
1080 | save_sptr((SV**)&last_in_gv); | |
1081 | } | |
2304df62 | 1082 | else if (SvOK(sv)) |
a0d0e21e | 1083 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 LW |
1084 | break; |
1085 | case '^': | |
a0d0e21e LW |
1086 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1087 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1088 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1089 | break; |
1090 | case '~': | |
a0d0e21e LW |
1091 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1092 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1093 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1094 | break; |
1095 | case '=': | |
a0d0e21e | 1096 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1097 | break; |
1098 | case '-': | |
a0d0e21e LW |
1099 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1100 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) | |
1101 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; | |
79072805 LW |
1102 | break; |
1103 | case '%': | |
a0d0e21e | 1104 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1105 | break; |
1106 | case '|': | |
a0d0e21e | 1107 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 | 1108 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e | 1109 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 LW |
1110 | } |
1111 | break; | |
1112 | case '*': | |
463ee0b2 | 1113 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1114 | multiline = (i != 0); |
1115 | break; | |
1116 | case '/': | |
c07a80fd | 1117 | SvREFCNT_dec(nrs); |
1118 | nrs = newSVsv(sv); | |
1119 | SvREFCNT_dec(rs); | |
1120 | rs = SvREFCNT_inc(nrs); | |
79072805 LW |
1121 | break; |
1122 | case '\\': | |
1123 | if (ors) | |
1124 | Safefree(ors); | |
a0d0e21e | 1125 | ors = savepv(SvPV(sv,orslen)); |
79072805 LW |
1126 | break; |
1127 | case ',': | |
1128 | if (ofs) | |
1129 | Safefree(ofs); | |
a0d0e21e | 1130 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 LW |
1131 | break; |
1132 | case '#': | |
1133 | if (ofmt) | |
1134 | Safefree(ofmt); | |
a0d0e21e | 1135 | ofmt = savepv(SvPV(sv,na)); |
79072805 LW |
1136 | break; |
1137 | case '[': | |
a0d0e21e | 1138 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1139 | break; |
1140 | case '?': | |
748a9306 | 1141 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1142 | break; |
1143 | case '!': | |
a5f75d66 | 1144 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */ |
79072805 LW |
1145 | break; |
1146 | case '<': | |
463ee0b2 | 1147 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1148 | if (delaymagic) { |
1149 | delaymagic |= DM_RUID; | |
1150 | break; /* don't do magic till later */ | |
1151 | } | |
1152 | #ifdef HAS_SETRUID | |
85e6fe83 | 1153 | (void)setruid((Uid_t)uid); |
79072805 LW |
1154 | #else |
1155 | #ifdef HAS_SETREUID | |
85e6fe83 | 1156 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 | 1157 | #else |
85e6fe83 LW |
1158 | #ifdef HAS_SETRESUID |
1159 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); | |
79072805 LW |
1160 | #else |
1161 | if (uid == euid) /* special case $< = $> */ | |
1162 | (void)setuid(uid); | |
a0d0e21e LW |
1163 | else { |
1164 | uid = (I32)getuid(); | |
463ee0b2 | 1165 | croak("setruid() not implemented"); |
a0d0e21e | 1166 | } |
79072805 LW |
1167 | #endif |
1168 | #endif | |
85e6fe83 | 1169 | #endif |
748a9306 | 1170 | uid = (I32)getuid(); |
4633a7c4 | 1171 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1172 | break; |
1173 | case '>': | |
463ee0b2 | 1174 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1175 | if (delaymagic) { |
1176 | delaymagic |= DM_EUID; | |
1177 | break; /* don't do magic till later */ | |
1178 | } | |
1179 | #ifdef HAS_SETEUID | |
85e6fe83 | 1180 | (void)seteuid((Uid_t)euid); |
79072805 LW |
1181 | #else |
1182 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1183 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1184 | #else | |
1185 | #ifdef HAS_SETRESUID | |
1186 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); | |
79072805 LW |
1187 | #else |
1188 | if (euid == uid) /* special case $> = $< */ | |
1189 | setuid(euid); | |
a0d0e21e LW |
1190 | else { |
1191 | euid = (I32)geteuid(); | |
463ee0b2 | 1192 | croak("seteuid() not implemented"); |
a0d0e21e | 1193 | } |
79072805 LW |
1194 | #endif |
1195 | #endif | |
85e6fe83 | 1196 | #endif |
79072805 | 1197 | euid = (I32)geteuid(); |
4633a7c4 | 1198 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1199 | break; |
1200 | case '(': | |
463ee0b2 | 1201 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1202 | if (delaymagic) { |
1203 | delaymagic |= DM_RGID; | |
1204 | break; /* don't do magic till later */ | |
1205 | } | |
1206 | #ifdef HAS_SETRGID | |
85e6fe83 | 1207 | (void)setrgid((Gid_t)gid); |
79072805 LW |
1208 | #else |
1209 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1210 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1211 | #else | |
1212 | #ifdef HAS_SETRESGID | |
1213 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); | |
79072805 LW |
1214 | #else |
1215 | if (gid == egid) /* special case $( = $) */ | |
1216 | (void)setgid(gid); | |
748a9306 LW |
1217 | else { |
1218 | gid = (I32)getgid(); | |
463ee0b2 | 1219 | croak("setrgid() not implemented"); |
748a9306 | 1220 | } |
79072805 LW |
1221 | #endif |
1222 | #endif | |
85e6fe83 | 1223 | #endif |
79072805 | 1224 | gid = (I32)getgid(); |
4633a7c4 | 1225 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1226 | break; |
1227 | case ')': | |
463ee0b2 | 1228 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1229 | if (delaymagic) { |
1230 | delaymagic |= DM_EGID; | |
1231 | break; /* don't do magic till later */ | |
1232 | } | |
1233 | #ifdef HAS_SETEGID | |
85e6fe83 | 1234 | (void)setegid((Gid_t)egid); |
79072805 LW |
1235 | #else |
1236 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1237 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1238 | #else | |
1239 | #ifdef HAS_SETRESGID | |
1240 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); | |
79072805 LW |
1241 | #else |
1242 | if (egid == gid) /* special case $) = $( */ | |
1243 | (void)setgid(egid); | |
748a9306 LW |
1244 | else { |
1245 | egid = (I32)getegid(); | |
463ee0b2 | 1246 | croak("setegid() not implemented"); |
748a9306 | 1247 | } |
79072805 LW |
1248 | #endif |
1249 | #endif | |
85e6fe83 | 1250 | #endif |
79072805 | 1251 | egid = (I32)getegid(); |
4633a7c4 | 1252 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1253 | break; |
1254 | case ':': | |
a0d0e21e | 1255 | chopset = SvPV_force(sv,na); |
79072805 LW |
1256 | break; |
1257 | case '0': | |
1258 | if (!origalen) { | |
1259 | s = origargv[0]; | |
1260 | s += strlen(s); | |
1261 | /* See if all the arguments are contiguous in memory */ | |
1262 | for (i = 1; i < origargc; i++) { | |
1263 | if (origargv[i] == s + 1) | |
1264 | s += strlen(++s); /* this one is ok too */ | |
1265 | } | |
1266 | if (origenviron[0] == s + 1) { /* can grab env area too? */ | |
1267 | my_setenv("NoNeSuCh", Nullch); | |
1268 | /* force copy of environment */ | |
1269 | for (i = 0; origenviron[i]; i++) | |
1270 | if (origenviron[i] == s + 1) | |
1271 | s += strlen(++s); | |
1272 | } | |
1273 | origalen = s - origargv[0]; | |
1274 | } | |
a0d0e21e | 1275 | s = SvPV_force(sv,len); |
8990e307 | 1276 | i = len; |
79072805 LW |
1277 | if (i >= origalen) { |
1278 | i = origalen; | |
1279 | SvCUR_set(sv, i); | |
1280 | *SvEND(sv) = '\0'; | |
1281 | Copy(s, origargv[0], i, char); | |
1282 | } | |
1283 | else { | |
1284 | Copy(s, origargv[0], i, char); | |
1285 | s = origargv[0]+i; | |
1286 | *s++ = '\0'; | |
1287 | while (++i < origalen) | |
8990e307 LW |
1288 | *s++ = ' '; |
1289 | s = origargv[0]+i; | |
ed6116ce | 1290 | for (i = 1; i < origargc; i++) |
8990e307 | 1291 | origargv[i] = Nullch; |
79072805 LW |
1292 | } |
1293 | break; | |
1294 | } | |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | I32 | |
1299 | whichsig(sig) | |
1300 | char *sig; | |
1301 | { | |
1302 | register char **sigv; | |
1303 | ||
1304 | for (sigv = sig_name+1; *sigv; sigv++) | |
1305 | if (strEQ(sig,*sigv)) | |
8e07c86e | 1306 | return sig_num[sigv - sig_name]; |
79072805 LW |
1307 | #ifdef SIGCLD |
1308 | if (strEQ(sig,"CHLD")) | |
1309 | return SIGCLD; | |
1310 | #endif | |
1311 | #ifdef SIGCHLD | |
1312 | if (strEQ(sig,"CLD")) | |
1313 | return SIGCHLD; | |
1314 | #endif | |
1315 | return 0; | |
1316 | } | |
1317 | ||
ecfc5424 | 1318 | Signal_t |
79072805 | 1319 | sighandler(sig) |
a0d0e21e | 1320 | int sig; |
79072805 LW |
1321 | { |
1322 | dSP; | |
1323 | GV *gv; | |
a0d0e21e | 1324 | HV *st; |
79072805 LW |
1325 | SV *sv; |
1326 | CV *cv; | |
79072805 | 1327 | AV *oldstack; |
8e07c86e | 1328 | char *signame; |
79072805 LW |
1329 | |
1330 | #ifdef OS2 /* or anybody else who requires SIG_ACK */ | |
1331 | signal(sig, SIG_ACK); | |
1332 | #endif | |
1333 | ||
4633a7c4 | 1334 | signame = sig_name[sig]; |
8e07c86e | 1335 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),signame,strlen(signame), |
a0d0e21e LW |
1336 | TRUE), |
1337 | &st, &gv, TRUE); | |
1338 | if (!cv || !CvROOT(cv) && | |
8e07c86e | 1339 | *signame == 'C' && instr(signame,"LD")) { |
a0d0e21e | 1340 | |
8e07c86e | 1341 | if (signame[1] == 'H') |
a0d0e21e LW |
1342 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE), |
1343 | &st, &gv, TRUE); | |
79072805 | 1344 | else |
a0d0e21e LW |
1345 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE), |
1346 | &st, &gv, TRUE); | |
1347 | /* gag */ | |
79072805 | 1348 | } |
a0d0e21e | 1349 | if (!cv || !CvROOT(cv)) { |
79072805 LW |
1350 | if (dowarn) |
1351 | warn("SIG%s handler \"%s\" not defined.\n", | |
8e07c86e | 1352 | signame, GvENAME(gv) ); |
79072805 LW |
1353 | return; |
1354 | } | |
1355 | ||
1356 | oldstack = stack; | |
a0d0e21e LW |
1357 | if (stack != signalstack) |
1358 | AvFILL(signalstack) = 0; | |
79072805 LW |
1359 | SWITCHSTACK(stack, signalstack); |
1360 | ||
8990e307 | 1361 | sv = sv_newmortal(); |
8e07c86e | 1362 | sv_setpv(sv,signame); |
a0d0e21e | 1363 | PUSHMARK(sp); |
79072805 | 1364 | PUSHs(sv); |
79072805 | 1365 | PUTBACK; |
a0d0e21e LW |
1366 | |
1367 | perl_call_sv((SV*)cv, G_DISCARD); | |
79072805 LW |
1368 | |
1369 | SWITCHSTACK(signalstack, oldstack); | |
79072805 LW |
1370 | |
1371 | return; | |
1372 | } |