Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
a0d0e21e |
3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 |
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 |
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 |
13 | */ |
14 | |
15 | #include "EXTERN.h" |
16 | #include "perl.h" |
17 | |
a0d0e21e |
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 |
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 |
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 |
95 | int |
96 | mg_get(sv) |
97 | SV* sv; |
98 | { |
c07a80fd |
99 | MGS* mgs; |
79072805 |
100 | MAGIC* mg; |
463ee0b2 |
101 | |
c07a80fd |
102 | ENTER; |
103 | mgs = save_magic(sv); |
463ee0b2 |
104 | |
79072805 |
105 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
106 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
107 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
79072805 |
108 | (*vtbl->svt_get)(sv, mg); |
a0d0e21e |
109 | if (mg->mg_flags & MGf_GSKIP) |
c07a80fd |
110 | mgs->mgs_flags = 0; |
a0d0e21e |
111 | } |
79072805 |
112 | } |
463ee0b2 |
113 | |
c07a80fd |
114 | LEAVE; |
79072805 |
115 | return 0; |
116 | } |
117 | |
118 | int |
119 | mg_set(sv) |
120 | SV* sv; |
121 | { |
c07a80fd |
122 | MGS* mgs; |
79072805 |
123 | MAGIC* mg; |
463ee0b2 |
124 | MAGIC* nextmg; |
125 | |
c07a80fd |
126 | ENTER; |
127 | mgs = save_magic(sv); |
463ee0b2 |
128 | |
129 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
79072805 |
130 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
131 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
132 | if (mg->mg_flags & MGf_GSKIP) { |
133 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
c07a80fd |
134 | mgs->mgs_flags = 0; |
a0d0e21e |
135 | } |
79072805 |
136 | if (vtbl && vtbl->svt_set) |
137 | (*vtbl->svt_set)(sv, mg); |
138 | } |
463ee0b2 |
139 | |
c07a80fd |
140 | LEAVE; |
79072805 |
141 | return 0; |
142 | } |
143 | |
144 | U32 |
145 | mg_len(sv) |
146 | SV* sv; |
147 | { |
148 | MAGIC* mg; |
748a9306 |
149 | char *junk; |
463ee0b2 |
150 | STRLEN len; |
463ee0b2 |
151 | |
79072805 |
152 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
153 | MGVTBL* vtbl = mg->mg_virtual; |
85e6fe83 |
154 | if (vtbl && vtbl->svt_len) { |
c07a80fd |
155 | ENTER; |
156 | save_magic(sv); |
a0d0e21e |
157 | /* omit MGf_GSKIP -- not changed here */ |
85e6fe83 |
158 | len = (*vtbl->svt_len)(sv, mg); |
c07a80fd |
159 | LEAVE; |
85e6fe83 |
160 | return len; |
161 | } |
162 | } |
163 | |
748a9306 |
164 | junk = SvPV(sv, len); |
463ee0b2 |
165 | return len; |
79072805 |
166 | } |
167 | |
168 | int |
169 | mg_clear(sv) |
170 | SV* sv; |
171 | { |
172 | MAGIC* mg; |
463ee0b2 |
173 | |
c07a80fd |
174 | ENTER; |
175 | save_magic(sv); |
463ee0b2 |
176 | |
79072805 |
177 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
178 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
179 | /* omit GSKIP -- never set here */ |
180 | |
79072805 |
181 | if (vtbl && vtbl->svt_clear) |
182 | (*vtbl->svt_clear)(sv, mg); |
183 | } |
463ee0b2 |
184 | |
c07a80fd |
185 | LEAVE; |
79072805 |
186 | return 0; |
187 | } |
188 | |
93a17b20 |
189 | MAGIC* |
190 | mg_find(sv, type) |
191 | SV* sv; |
a0d0e21e |
192 | int type; |
93a17b20 |
193 | { |
194 | MAGIC* mg; |
93a17b20 |
195 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
196 | if (mg->mg_type == type) |
197 | return mg; |
198 | } |
199 | return 0; |
200 | } |
201 | |
79072805 |
202 | int |
463ee0b2 |
203 | mg_copy(sv, nsv, key, klen) |
79072805 |
204 | SV* sv; |
463ee0b2 |
205 | SV* nsv; |
206 | char *key; |
207 | STRLEN klen; |
79072805 |
208 | { |
463ee0b2 |
209 | int count = 0; |
79072805 |
210 | MAGIC* mg; |
463ee0b2 |
211 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
212 | if (isUPPER(mg->mg_type)) { |
a0d0e21e |
213 | sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); |
463ee0b2 |
214 | count++; |
79072805 |
215 | } |
79072805 |
216 | } |
463ee0b2 |
217 | return count; |
79072805 |
218 | } |
219 | |
220 | int |
463ee0b2 |
221 | mg_free(sv) |
79072805 |
222 | SV* sv; |
223 | { |
224 | MAGIC* mg; |
225 | MAGIC* moremagic; |
226 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
227 | MGVTBL* vtbl = mg->mg_virtual; |
228 | moremagic = mg->mg_moremagic; |
229 | if (vtbl && vtbl->svt_free) |
230 | (*vtbl->svt_free)(sv, mg); |
93a17b20 |
231 | if (mg->mg_ptr && mg->mg_type != 'g') |
79072805 |
232 | Safefree(mg->mg_ptr); |
85e6fe83 |
233 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 |
234 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
235 | Safefree(mg); |
236 | } |
237 | SvMAGIC(sv) = 0; |
238 | return 0; |
239 | } |
240 | |
241 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
242 | #include <signal.h> |
243 | #endif |
244 | |
93a17b20 |
245 | U32 |
246 | magic_len(sv, mg) |
247 | SV *sv; |
248 | MAGIC *mg; |
249 | { |
250 | register I32 paren; |
251 | register char *s; |
252 | register I32 i; |
748a9306 |
253 | char *t; |
93a17b20 |
254 | |
255 | switch (*mg->mg_ptr) { |
256 | case '1': case '2': case '3': case '4': |
257 | case '5': case '6': case '7': case '8': case '9': case '&': |
258 | if (curpm) { |
259 | paren = atoi(mg->mg_ptr); |
260 | getparen: |
261 | if (curpm->op_pmregexp && |
262 | paren <= curpm->op_pmregexp->nparens && |
748a9306 |
263 | (s = curpm->op_pmregexp->startp[paren]) && |
264 | (t = curpm->op_pmregexp->endp[paren]) ) { |
265 | i = t - s; |
93a17b20 |
266 | if (i >= 0) |
267 | return i; |
93a17b20 |
268 | } |
93a17b20 |
269 | } |
748a9306 |
270 | return 0; |
93a17b20 |
271 | break; |
272 | case '+': |
273 | if (curpm) { |
274 | paren = curpm->op_pmregexp->lastparen; |
a0d0e21e |
275 | if (!paren) |
276 | return 0; |
93a17b20 |
277 | goto getparen; |
278 | } |
748a9306 |
279 | return 0; |
93a17b20 |
280 | break; |
281 | case '`': |
282 | if (curpm) { |
283 | if (curpm->op_pmregexp && |
284 | (s = curpm->op_pmregexp->subbeg) ) { |
285 | i = curpm->op_pmregexp->startp[0] - s; |
286 | if (i >= 0) |
287 | return i; |
93a17b20 |
288 | } |
93a17b20 |
289 | } |
748a9306 |
290 | return 0; |
93a17b20 |
291 | case '\'': |
292 | if (curpm) { |
293 | if (curpm->op_pmregexp && |
294 | (s = curpm->op_pmregexp->endp[0]) ) { |
295 | return (STRLEN) (curpm->op_pmregexp->subend - s); |
296 | } |
93a17b20 |
297 | } |
748a9306 |
298 | return 0; |
93a17b20 |
299 | case ',': |
300 | return (STRLEN)ofslen; |
301 | case '\\': |
302 | return (STRLEN)orslen; |
303 | } |
304 | magic_get(sv,mg); |
305 | if (!SvPOK(sv) && SvNIOK(sv)) |
463ee0b2 |
306 | sv_2pv(sv, &na); |
93a17b20 |
307 | if (SvPOK(sv)) |
308 | return SvCUR(sv); |
309 | return 0; |
310 | } |
311 | |
79072805 |
312 | int |
313 | magic_get(sv, mg) |
314 | SV *sv; |
315 | MAGIC *mg; |
316 | { |
317 | register I32 paren; |
318 | register char *s; |
319 | register I32 i; |
748a9306 |
320 | char *t; |
79072805 |
321 | |
322 | switch (*mg->mg_ptr) { |
748a9306 |
323 | case '\001': /* ^A */ |
324 | sv_setsv(sv, bodytarget); |
325 | break; |
79072805 |
326 | case '\004': /* ^D */ |
327 | sv_setiv(sv,(I32)(debug & 32767)); |
328 | break; |
329 | case '\006': /* ^F */ |
330 | sv_setiv(sv,(I32)maxsysfd); |
331 | break; |
a0d0e21e |
332 | case '\010': /* ^H */ |
333 | sv_setiv(sv,(I32)hints); |
334 | break; |
79072805 |
335 | case '\t': /* ^I */ |
336 | if (inplace) |
337 | sv_setpv(sv, inplace); |
338 | else |
339 | sv_setsv(sv,&sv_undef); |
340 | break; |
341 | case '\020': /* ^P */ |
342 | sv_setiv(sv,(I32)perldb); |
343 | break; |
344 | case '\024': /* ^T */ |
345 | sv_setiv(sv,(I32)basetime); |
346 | break; |
347 | case '\027': /* ^W */ |
348 | sv_setiv(sv,(I32)dowarn); |
349 | break; |
350 | case '1': case '2': case '3': case '4': |
351 | case '5': case '6': case '7': case '8': case '9': case '&': |
352 | if (curpm) { |
353 | paren = atoi(GvENAME(mg->mg_obj)); |
354 | getparen: |
355 | if (curpm->op_pmregexp && |
356 | paren <= curpm->op_pmregexp->nparens && |
a0d0e21e |
357 | (s = curpm->op_pmregexp->startp[paren]) && |
748a9306 |
358 | (t = curpm->op_pmregexp->endp[paren]) ) { |
359 | i = t - s; |
360 | if (i >= 0) { |
361 | MAGIC *tmg; |
79072805 |
362 | sv_setpvn(sv,s,i); |
748a9306 |
363 | if (tainting && (tmg = mg_find(sv,'t'))) |
364 | tmg->mg_len = 0; /* guarantee $1 untainted */ |
365 | break; |
366 | } |
79072805 |
367 | } |
79072805 |
368 | } |
748a9306 |
369 | sv_setsv(sv,&sv_undef); |
79072805 |
370 | break; |
371 | case '+': |
372 | if (curpm) { |
373 | paren = curpm->op_pmregexp->lastparen; |
a0d0e21e |
374 | if (paren) |
375 | goto getparen; |
79072805 |
376 | } |
748a9306 |
377 | sv_setsv(sv,&sv_undef); |
79072805 |
378 | break; |
379 | case '`': |
380 | if (curpm) { |
381 | if (curpm->op_pmregexp && |
382 | (s = curpm->op_pmregexp->subbeg) ) { |
383 | i = curpm->op_pmregexp->startp[0] - s; |
748a9306 |
384 | if (i >= 0) { |
79072805 |
385 | sv_setpvn(sv,s,i); |
748a9306 |
386 | break; |
387 | } |
79072805 |
388 | } |
79072805 |
389 | } |
748a9306 |
390 | sv_setsv(sv,&sv_undef); |
79072805 |
391 | break; |
392 | case '\'': |
393 | if (curpm) { |
394 | if (curpm->op_pmregexp && |
395 | (s = curpm->op_pmregexp->endp[0]) ) { |
396 | sv_setpvn(sv,s, curpm->op_pmregexp->subend - s); |
748a9306 |
397 | break; |
79072805 |
398 | } |
79072805 |
399 | } |
748a9306 |
400 | sv_setsv(sv,&sv_undef); |
79072805 |
401 | break; |
402 | case '.': |
403 | #ifndef lint |
a0d0e21e |
404 | if (GvIO(last_in_gv)) { |
8990e307 |
405 | sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv))); |
79072805 |
406 | } |
407 | #endif |
408 | break; |
409 | case '?': |
410 | sv_setiv(sv,(I32)statusvalue); |
411 | break; |
412 | case '^': |
a0d0e21e |
413 | s = IoTOP_NAME(GvIOp(defoutgv)); |
79072805 |
414 | if (s) |
415 | sv_setpv(sv,s); |
416 | else { |
417 | sv_setpv(sv,GvENAME(defoutgv)); |
418 | sv_catpv(sv,"_TOP"); |
419 | } |
420 | break; |
421 | case '~': |
a0d0e21e |
422 | s = IoFMT_NAME(GvIOp(defoutgv)); |
79072805 |
423 | if (!s) |
424 | s = GvENAME(defoutgv); |
425 | sv_setpv(sv,s); |
426 | break; |
427 | #ifndef lint |
428 | case '=': |
a0d0e21e |
429 | sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv))); |
79072805 |
430 | break; |
431 | case '-': |
a0d0e21e |
432 | sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 |
433 | break; |
434 | case '%': |
a0d0e21e |
435 | sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv))); |
79072805 |
436 | break; |
437 | #endif |
438 | case ':': |
439 | break; |
440 | case '/': |
441 | break; |
442 | case '[': |
a0d0e21e |
443 | sv_setiv(sv,(I32)curcop->cop_arybase); |
79072805 |
444 | break; |
445 | case '|': |
a0d0e21e |
446 | sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
447 | break; |
448 | case ',': |
449 | sv_setpvn(sv,ofs,ofslen); |
450 | break; |
451 | case '\\': |
452 | sv_setpvn(sv,ors,orslen); |
453 | break; |
454 | case '#': |
455 | sv_setpv(sv,ofmt); |
456 | break; |
457 | case '!': |
458 | sv_setnv(sv,(double)errno); |
2304df62 |
459 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
79072805 |
460 | SvNOK_on(sv); /* what a wonderful hack! */ |
461 | break; |
462 | case '<': |
463 | sv_setiv(sv,(I32)uid); |
464 | break; |
465 | case '>': |
466 | sv_setiv(sv,(I32)euid); |
467 | break; |
468 | case '(': |
469 | s = buf; |
470 | (void)sprintf(s,"%d",(int)gid); |
471 | goto add_groups; |
472 | case ')': |
473 | s = buf; |
474 | (void)sprintf(s,"%d",(int)egid); |
475 | add_groups: |
476 | while (*s) s++; |
477 | #ifdef HAS_GETGROUPS |
478 | #ifndef NGROUPS |
479 | #define NGROUPS 32 |
480 | #endif |
481 | { |
a0d0e21e |
482 | Groups_t gary[NGROUPS]; |
79072805 |
483 | |
484 | i = getgroups(NGROUPS,gary); |
485 | while (--i >= 0) { |
486 | (void)sprintf(s," %ld", (long)gary[i]); |
487 | while (*s) s++; |
488 | } |
489 | } |
490 | #endif |
491 | sv_setpv(sv,buf); |
492 | break; |
493 | case '*': |
494 | break; |
495 | case '0': |
496 | break; |
497 | } |
a0d0e21e |
498 | return 0; |
79072805 |
499 | } |
500 | |
501 | int |
502 | magic_getuvar(sv, mg) |
503 | SV *sv; |
504 | MAGIC *mg; |
505 | { |
506 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
507 | |
508 | if (uf && uf->uf_val) |
509 | (*uf->uf_val)(uf->uf_index, sv); |
510 | return 0; |
511 | } |
512 | |
513 | int |
514 | magic_setenv(sv,mg) |
515 | SV* sv; |
516 | MAGIC* mg; |
517 | { |
518 | register char *s; |
a0d0e21e |
519 | STRLEN len; |
520 | I32 i; |
521 | s = SvPV(sv,len); |
79072805 |
522 | my_setenv(mg->mg_ptr,s); |
a0d0e21e |
523 | #ifdef DYNAMIC_ENV_FETCH |
524 | /* We just undefd an environment var. Is a replacement */ |
525 | /* waiting in the wings? */ |
526 | if (!len) { |
527 | SV **envsvp; |
528 | if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE)) |
529 | s = SvPV(*envsvp,len); |
530 | } |
531 | #endif |
79072805 |
532 | /* And you'll never guess what the dog had */ |
533 | /* in its mouth... */ |
463ee0b2 |
534 | if (tainting) { |
535 | if (s && strEQ(mg->mg_ptr,"PATH")) { |
a0d0e21e |
536 | char *strend = s + len; |
463ee0b2 |
537 | |
538 | while (s < strend) { |
539 | s = cpytill(tokenbuf,s,strend,':',&i); |
540 | s++; |
541 | if (*tokenbuf != '/' |
a0d0e21e |
542 | || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
8990e307 |
543 | MgTAINTEDDIR_on(mg); |
463ee0b2 |
544 | } |
79072805 |
545 | } |
546 | } |
79072805 |
547 | return 0; |
548 | } |
549 | |
550 | int |
85e6fe83 |
551 | magic_clearenv(sv,mg) |
552 | SV* sv; |
553 | MAGIC* mg; |
554 | { |
555 | my_setenv(mg->mg_ptr,Nullch); |
556 | return 0; |
557 | } |
558 | |
3d37d572 |
559 | #ifdef HAS_SIGACTION |
560 | /* set up reliable signal() clone */ |
561 | |
562 | typedef void (*Sigfunc) _((int)); |
563 | |
564 | static |
565 | Sigfunc rsignal(signo,handler) |
566 | int signo; |
567 | Sigfunc handler; |
568 | { |
569 | struct sigaction act,oact; |
570 | |
571 | act.sa_handler = handler; |
572 | sigemptyset(&act.sa_mask); |
573 | act.sa_flags = 0; |
574 | #ifdef SIGALRM |
575 | if (signo == SIGALRM) { |
576 | #else |
577 | if (0) { |
578 | #endif |
579 | #ifdef SA_INTERRUPT |
580 | act.sa_flags |= SA_INTERRUPT; /* SunOS */ |
581 | #endif |
582 | } else { |
583 | #ifdef SA_RESTART |
584 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
585 | #endif |
586 | } |
587 | if (sigaction(signo, &act, &oact) < 0) |
588 | return(SIG_ERR); |
589 | else |
590 | return(oact.sa_handler); |
591 | } |
592 | |
593 | #else |
594 | |
595 | /* ah well, so much for reliability */ |
596 | |
597 | #define rsignal(x,y) signal(x,y) |
598 | |
599 | #endif |
600 | |
601 | |
85e6fe83 |
602 | int |
79072805 |
603 | magic_setsig(sv,mg) |
604 | SV* sv; |
605 | MAGIC* mg; |
606 | { |
607 | register char *s; |
608 | I32 i; |
748a9306 |
609 | SV** svp; |
a0d0e21e |
610 | |
748a9306 |
611 | s = mg->mg_ptr; |
612 | if (*s == '_') { |
613 | if (strEQ(s,"__DIE__")) |
614 | svp = &diehook; |
615 | else if (strEQ(s,"__WARN__")) |
616 | svp = &warnhook; |
617 | else if (strEQ(s,"__PARSE__")) |
618 | svp = &parsehook; |
619 | else |
620 | croak("No such hook: %s", s); |
621 | i = 0; |
4633a7c4 |
622 | if (*svp) { |
623 | SvREFCNT_dec(*svp); |
624 | *svp = 0; |
625 | } |
748a9306 |
626 | } |
627 | else { |
628 | i = whichsig(s); /* ...no, a brick */ |
629 | if (!i) { |
630 | if (dowarn || strEQ(s,"ALARM")) |
631 | warn("No such signal: SIG%s", s); |
632 | return 0; |
633 | } |
634 | } |
a0d0e21e |
635 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 |
636 | if (i) |
3d37d572 |
637 | (void)rsignal(i,sighandler); |
748a9306 |
638 | else |
639 | *svp = SvREFCNT_inc(sv); |
a0d0e21e |
640 | return 0; |
641 | } |
642 | s = SvPV_force(sv,na); |
748a9306 |
643 | if (strEQ(s,"IGNORE")) { |
644 | if (i) |
3d37d572 |
645 | (void)rsignal(i,SIG_IGN); |
748a9306 |
646 | else |
647 | *svp = 0; |
648 | } |
649 | else if (strEQ(s,"DEFAULT") || !*s) { |
650 | if (i) |
3d37d572 |
651 | (void)rsignal(i,SIG_DFL); |
748a9306 |
652 | else |
653 | *svp = 0; |
654 | } |
79072805 |
655 | else { |
2304df62 |
656 | if (!strchr(s,':') && !strchr(s,'\'')) { |
657 | sprintf(tokenbuf, "main::%s",s); |
79072805 |
658 | sv_setpv(sv,tokenbuf); |
659 | } |
748a9306 |
660 | if (i) |
3d37d572 |
661 | (void)rsignal(i,sighandler); |
748a9306 |
662 | else |
663 | *svp = SvREFCNT_inc(sv); |
79072805 |
664 | } |
665 | return 0; |
666 | } |
667 | |
668 | int |
463ee0b2 |
669 | magic_setisa(sv,mg) |
79072805 |
670 | SV* sv; |
671 | MAGIC* mg; |
672 | { |
463ee0b2 |
673 | sub_generation++; |
674 | return 0; |
675 | } |
676 | |
a0d0e21e |
677 | #ifdef OVERLOAD |
678 | |
463ee0b2 |
679 | int |
a0d0e21e |
680 | magic_setamagic(sv,mg) |
463ee0b2 |
681 | SV* sv; |
682 | MAGIC* mg; |
683 | { |
a0d0e21e |
684 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
685 | amagic_generation++; |
463ee0b2 |
686 | |
a0d0e21e |
687 | return 0; |
688 | } |
689 | #endif /* OVERLOAD */ |
463ee0b2 |
690 | |
a0d0e21e |
691 | static int |
692 | magic_methpack(sv,mg,meth) |
693 | SV* sv; |
694 | MAGIC* mg; |
695 | char *meth; |
696 | { |
697 | dSP; |
463ee0b2 |
698 | |
a0d0e21e |
699 | ENTER; |
700 | SAVETMPS; |
701 | PUSHMARK(sp); |
702 | EXTEND(sp, 2); |
703 | PUSHs(mg->mg_obj); |
463ee0b2 |
704 | if (mg->mg_ptr) |
a0d0e21e |
705 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
706 | else if (mg->mg_type == 'p') |
707 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
463ee0b2 |
708 | PUTBACK; |
709 | |
a0d0e21e |
710 | if (perl_call_method(meth, G_SCALAR)) |
711 | sv_setsv(sv, *stack_sp--); |
463ee0b2 |
712 | |
a0d0e21e |
713 | FREETMPS; |
714 | LEAVE; |
715 | return 0; |
716 | } |
463ee0b2 |
717 | |
a0d0e21e |
718 | int |
719 | magic_getpack(sv,mg) |
720 | SV* sv; |
721 | MAGIC* mg; |
722 | { |
723 | magic_methpack(sv,mg,"FETCH"); |
724 | if (mg->mg_ptr) |
725 | mg->mg_flags |= MGf_GSKIP; |
463ee0b2 |
726 | return 0; |
727 | } |
728 | |
729 | int |
730 | magic_setpack(sv,mg) |
731 | SV* sv; |
732 | MAGIC* mg; |
733 | { |
463ee0b2 |
734 | dSP; |
463ee0b2 |
735 | |
a0d0e21e |
736 | PUSHMARK(sp); |
737 | EXTEND(sp, 3); |
738 | PUSHs(mg->mg_obj); |
463ee0b2 |
739 | if (mg->mg_ptr) |
a0d0e21e |
740 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
741 | else if (mg->mg_type == 'p') |
742 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
463ee0b2 |
743 | PUSHs(sv); |
744 | PUTBACK; |
745 | |
a0d0e21e |
746 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 |
747 | |
748 | return 0; |
749 | } |
750 | |
751 | int |
752 | magic_clearpack(sv,mg) |
753 | SV* sv; |
754 | MAGIC* mg; |
755 | { |
a0d0e21e |
756 | return magic_methpack(sv,mg,"DELETE"); |
757 | } |
463ee0b2 |
758 | |
a0d0e21e |
759 | int magic_wipepack(sv,mg) |
760 | SV* sv; |
761 | MAGIC* mg; |
762 | { |
763 | dSP; |
463ee0b2 |
764 | |
a0d0e21e |
765 | PUSHMARK(sp); |
766 | XPUSHs(mg->mg_obj); |
463ee0b2 |
767 | PUTBACK; |
463ee0b2 |
768 | |
a0d0e21e |
769 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 |
770 | |
771 | return 0; |
772 | } |
773 | |
774 | int |
775 | magic_nextpack(sv,mg,key) |
776 | SV* sv; |
777 | MAGIC* mg; |
778 | SV* key; |
779 | { |
463ee0b2 |
780 | dSP; |
a0d0e21e |
781 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
782 | |
783 | ENTER; |
a0d0e21e |
784 | SAVETMPS; |
785 | PUSHMARK(sp); |
786 | EXTEND(sp, 2); |
787 | PUSHs(mg->mg_obj); |
463ee0b2 |
788 | if (SvOK(key)) |
789 | PUSHs(key); |
790 | PUTBACK; |
791 | |
a0d0e21e |
792 | if (perl_call_method(meth, G_SCALAR)) |
793 | sv_setsv(key, *stack_sp--); |
463ee0b2 |
794 | |
a0d0e21e |
795 | FREETMPS; |
796 | LEAVE; |
79072805 |
797 | return 0; |
798 | } |
799 | |
800 | int |
a0d0e21e |
801 | magic_existspack(sv,mg) |
802 | SV* sv; |
803 | MAGIC* mg; |
804 | { |
805 | return magic_methpack(sv,mg,"EXISTS"); |
806 | } |
807 | |
808 | int |
79072805 |
809 | magic_setdbline(sv,mg) |
810 | SV* sv; |
811 | MAGIC* mg; |
812 | { |
813 | OP *o; |
814 | I32 i; |
815 | GV* gv; |
816 | SV** svp; |
817 | |
818 | gv = DBline; |
819 | i = SvTRUE(sv); |
820 | svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE); |
8990e307 |
821 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 |
822 | o->op_private = i; |
79072805 |
823 | else |
824 | warn("Can't break at that line\n"); |
825 | return 0; |
826 | } |
827 | |
828 | int |
829 | magic_getarylen(sv,mg) |
830 | SV* sv; |
831 | MAGIC* mg; |
832 | { |
a0d0e21e |
833 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); |
79072805 |
834 | return 0; |
835 | } |
836 | |
837 | int |
838 | magic_setarylen(sv,mg) |
839 | SV* sv; |
840 | MAGIC* mg; |
841 | { |
a0d0e21e |
842 | av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase); |
843 | return 0; |
844 | } |
845 | |
846 | int |
847 | magic_getpos(sv,mg) |
848 | SV* sv; |
849 | MAGIC* mg; |
850 | { |
851 | SV* lsv = LvTARG(sv); |
852 | |
853 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
854 | mg = mg_find(lsv, 'g'); |
855 | if (mg && mg->mg_len >= 0) { |
856 | sv_setiv(sv, mg->mg_len + curcop->cop_arybase); |
857 | return 0; |
858 | } |
859 | } |
860 | (void)SvOK_off(sv); |
861 | return 0; |
862 | } |
863 | |
864 | int |
865 | magic_setpos(sv,mg) |
866 | SV* sv; |
867 | MAGIC* mg; |
868 | { |
869 | SV* lsv = LvTARG(sv); |
870 | SSize_t pos; |
871 | STRLEN len; |
872 | |
873 | mg = 0; |
874 | |
875 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
876 | mg = mg_find(lsv, 'g'); |
877 | if (!mg) { |
878 | if (!SvOK(sv)) |
879 | return 0; |
880 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
881 | mg = mg_find(lsv, 'g'); |
882 | } |
883 | else if (!SvOK(sv)) { |
884 | mg->mg_len = -1; |
885 | return 0; |
886 | } |
887 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
888 | |
889 | pos = SvIV(sv) - curcop->cop_arybase; |
890 | if (pos < 0) { |
891 | pos += len; |
892 | if (pos < 0) |
893 | pos = 0; |
894 | } |
895 | else if (pos > len) |
896 | pos = len; |
897 | mg->mg_len = pos; |
898 | |
79072805 |
899 | return 0; |
900 | } |
901 | |
902 | int |
903 | magic_getglob(sv,mg) |
904 | SV* sv; |
905 | MAGIC* mg; |
906 | { |
907 | gv_efullname(sv,((GV*)sv));/* a gv value, be nice */ |
908 | return 0; |
909 | } |
910 | |
911 | int |
912 | magic_setglob(sv,mg) |
913 | SV* sv; |
914 | MAGIC* mg; |
915 | { |
916 | register char *s; |
917 | GV* gv; |
918 | |
919 | if (!SvOK(sv)) |
920 | return 0; |
463ee0b2 |
921 | s = SvPV(sv, na); |
79072805 |
922 | if (*s == '*' && s[1]) |
923 | s++; |
85e6fe83 |
924 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 |
925 | if (sv == (SV*)gv) |
926 | return 0; |
927 | if (GvGP(sv)) |
928 | gp_free(sv); |
929 | GvGP(sv) = gp_ref(GvGP(gv)); |
930 | if (!GvAV(gv)) |
931 | gv_AVadd(gv); |
932 | if (!GvHV(gv)) |
933 | gv_HVadd(gv); |
a0d0e21e |
934 | if (!GvIOp(gv)) |
935 | GvIOp(gv) = newIO(); |
79072805 |
936 | return 0; |
937 | } |
938 | |
939 | int |
940 | magic_setsubstr(sv,mg) |
941 | SV* sv; |
942 | MAGIC* mg; |
943 | { |
8990e307 |
944 | STRLEN len; |
945 | char *tmps = SvPV(sv,len); |
946 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
79072805 |
947 | return 0; |
948 | } |
949 | |
950 | int |
463ee0b2 |
951 | magic_gettaint(sv,mg) |
952 | SV* sv; |
953 | MAGIC* mg; |
954 | { |
748a9306 |
955 | if (mg->mg_len & 1) |
956 | tainted = TRUE; |
957 | else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */ |
958 | tainted = TRUE; |
463ee0b2 |
959 | return 0; |
960 | } |
961 | |
962 | int |
963 | magic_settaint(sv,mg) |
964 | SV* sv; |
965 | MAGIC* mg; |
966 | { |
748a9306 |
967 | if (localizing) { |
968 | if (localizing == 1) |
969 | mg->mg_len <<= 1; |
970 | else |
971 | mg->mg_len >>= 1; |
a0d0e21e |
972 | } |
748a9306 |
973 | else if (tainted) |
974 | mg->mg_len |= 1; |
975 | else |
976 | mg->mg_len &= ~1; |
463ee0b2 |
977 | return 0; |
978 | } |
979 | |
980 | int |
79072805 |
981 | magic_setvec(sv,mg) |
982 | SV* sv; |
983 | MAGIC* mg; |
984 | { |
985 | do_vecset(sv); /* XXX slurp this routine */ |
986 | return 0; |
987 | } |
988 | |
989 | int |
93a17b20 |
990 | magic_setmglob(sv,mg) |
991 | SV* sv; |
992 | MAGIC* mg; |
993 | { |
a0d0e21e |
994 | mg->mg_len = -1; |
93a17b20 |
995 | return 0; |
996 | } |
997 | |
998 | int |
79072805 |
999 | magic_setbm(sv,mg) |
1000 | SV* sv; |
1001 | MAGIC* mg; |
1002 | { |
463ee0b2 |
1003 | sv_unmagic(sv, 'B'); |
79072805 |
1004 | SvVALID_off(sv); |
1005 | return 0; |
1006 | } |
1007 | |
1008 | int |
1009 | magic_setuvar(sv,mg) |
1010 | SV* sv; |
1011 | MAGIC* mg; |
1012 | { |
1013 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
1014 | |
1015 | if (uf && uf->uf_set) |
1016 | (*uf->uf_set)(uf->uf_index, sv); |
1017 | return 0; |
1018 | } |
1019 | |
1020 | int |
1021 | magic_set(sv,mg) |
1022 | SV* sv; |
1023 | MAGIC* mg; |
1024 | { |
1025 | register char *s; |
1026 | I32 i; |
8990e307 |
1027 | STRLEN len; |
79072805 |
1028 | switch (*mg->mg_ptr) { |
748a9306 |
1029 | case '\001': /* ^A */ |
1030 | sv_setsv(bodytarget, sv); |
1031 | break; |
79072805 |
1032 | case '\004': /* ^D */ |
8990e307 |
1033 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 |
1034 | DEBUG_x(dump_all()); |
1035 | break; |
1036 | case '\006': /* ^F */ |
463ee0b2 |
1037 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1038 | break; |
a0d0e21e |
1039 | case '\010': /* ^H */ |
1040 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1041 | break; |
79072805 |
1042 | case '\t': /* ^I */ |
1043 | if (inplace) |
1044 | Safefree(inplace); |
1045 | if (SvOK(sv)) |
a0d0e21e |
1046 | inplace = savepv(SvPV(sv,na)); |
79072805 |
1047 | else |
1048 | inplace = Nullch; |
1049 | break; |
1050 | case '\020': /* ^P */ |
463ee0b2 |
1051 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1052 | if (i != perldb) { |
1053 | if (perldb) |
1054 | oldlastpm = curpm; |
1055 | else |
1056 | curpm = oldlastpm; |
1057 | } |
1058 | perldb = i; |
1059 | break; |
1060 | case '\024': /* ^T */ |
85e6fe83 |
1061 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1062 | break; |
1063 | case '\027': /* ^W */ |
463ee0b2 |
1064 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1065 | break; |
1066 | case '.': |
748a9306 |
1067 | if (localizing) { |
1068 | if (localizing == 1) |
1069 | save_sptr((SV**)&last_in_gv); |
1070 | } |
2304df62 |
1071 | else if (SvOK(sv)) |
a0d0e21e |
1072 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 |
1073 | break; |
1074 | case '^': |
a0d0e21e |
1075 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1076 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); |
1077 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1078 | break; |
1079 | case '~': |
a0d0e21e |
1080 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1081 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); |
1082 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1083 | break; |
1084 | case '=': |
a0d0e21e |
1085 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1086 | break; |
1087 | case '-': |
a0d0e21e |
1088 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1089 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) |
1090 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; |
79072805 |
1091 | break; |
1092 | case '%': |
a0d0e21e |
1093 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1094 | break; |
1095 | case '|': |
a0d0e21e |
1096 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 |
1097 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e |
1098 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 |
1099 | } |
1100 | break; |
1101 | case '*': |
463ee0b2 |
1102 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1103 | multiline = (i != 0); |
1104 | break; |
1105 | case '/': |
c07a80fd |
1106 | SvREFCNT_dec(nrs); |
1107 | nrs = newSVsv(sv); |
1108 | SvREFCNT_dec(rs); |
1109 | rs = SvREFCNT_inc(nrs); |
79072805 |
1110 | break; |
1111 | case '\\': |
1112 | if (ors) |
1113 | Safefree(ors); |
a0d0e21e |
1114 | ors = savepv(SvPV(sv,orslen)); |
79072805 |
1115 | break; |
1116 | case ',': |
1117 | if (ofs) |
1118 | Safefree(ofs); |
a0d0e21e |
1119 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 |
1120 | break; |
1121 | case '#': |
1122 | if (ofmt) |
1123 | Safefree(ofmt); |
a0d0e21e |
1124 | ofmt = savepv(SvPV(sv,na)); |
79072805 |
1125 | break; |
1126 | case '[': |
a0d0e21e |
1127 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1128 | break; |
1129 | case '?': |
748a9306 |
1130 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1131 | break; |
1132 | case '!': |
748a9306 |
1133 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SS$_ABORT); /* will anyone ever use this? */ |
79072805 |
1134 | break; |
1135 | case '<': |
463ee0b2 |
1136 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1137 | if (delaymagic) { |
1138 | delaymagic |= DM_RUID; |
1139 | break; /* don't do magic till later */ |
1140 | } |
1141 | #ifdef HAS_SETRUID |
85e6fe83 |
1142 | (void)setruid((Uid_t)uid); |
79072805 |
1143 | #else |
1144 | #ifdef HAS_SETREUID |
85e6fe83 |
1145 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 |
1146 | #else |
85e6fe83 |
1147 | #ifdef HAS_SETRESUID |
1148 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
1149 | #else |
1150 | if (uid == euid) /* special case $< = $> */ |
1151 | (void)setuid(uid); |
a0d0e21e |
1152 | else { |
1153 | uid = (I32)getuid(); |
463ee0b2 |
1154 | croak("setruid() not implemented"); |
a0d0e21e |
1155 | } |
79072805 |
1156 | #endif |
1157 | #endif |
85e6fe83 |
1158 | #endif |
748a9306 |
1159 | uid = (I32)getuid(); |
4633a7c4 |
1160 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1161 | break; |
1162 | case '>': |
463ee0b2 |
1163 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1164 | if (delaymagic) { |
1165 | delaymagic |= DM_EUID; |
1166 | break; /* don't do magic till later */ |
1167 | } |
1168 | #ifdef HAS_SETEUID |
85e6fe83 |
1169 | (void)seteuid((Uid_t)euid); |
79072805 |
1170 | #else |
1171 | #ifdef HAS_SETREUID |
85e6fe83 |
1172 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1173 | #else |
1174 | #ifdef HAS_SETRESUID |
1175 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); |
79072805 |
1176 | #else |
1177 | if (euid == uid) /* special case $> = $< */ |
1178 | setuid(euid); |
a0d0e21e |
1179 | else { |
1180 | euid = (I32)geteuid(); |
463ee0b2 |
1181 | croak("seteuid() not implemented"); |
a0d0e21e |
1182 | } |
79072805 |
1183 | #endif |
1184 | #endif |
85e6fe83 |
1185 | #endif |
79072805 |
1186 | euid = (I32)geteuid(); |
4633a7c4 |
1187 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1188 | break; |
1189 | case '(': |
463ee0b2 |
1190 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1191 | if (delaymagic) { |
1192 | delaymagic |= DM_RGID; |
1193 | break; /* don't do magic till later */ |
1194 | } |
1195 | #ifdef HAS_SETRGID |
85e6fe83 |
1196 | (void)setrgid((Gid_t)gid); |
79072805 |
1197 | #else |
1198 | #ifdef HAS_SETREGID |
85e6fe83 |
1199 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1200 | #else |
1201 | #ifdef HAS_SETRESGID |
1202 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
1203 | #else |
1204 | if (gid == egid) /* special case $( = $) */ |
1205 | (void)setgid(gid); |
748a9306 |
1206 | else { |
1207 | gid = (I32)getgid(); |
463ee0b2 |
1208 | croak("setrgid() not implemented"); |
748a9306 |
1209 | } |
79072805 |
1210 | #endif |
1211 | #endif |
85e6fe83 |
1212 | #endif |
79072805 |
1213 | gid = (I32)getgid(); |
4633a7c4 |
1214 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1215 | break; |
1216 | case ')': |
463ee0b2 |
1217 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1218 | if (delaymagic) { |
1219 | delaymagic |= DM_EGID; |
1220 | break; /* don't do magic till later */ |
1221 | } |
1222 | #ifdef HAS_SETEGID |
85e6fe83 |
1223 | (void)setegid((Gid_t)egid); |
79072805 |
1224 | #else |
1225 | #ifdef HAS_SETREGID |
85e6fe83 |
1226 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1227 | #else |
1228 | #ifdef HAS_SETRESGID |
1229 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); |
79072805 |
1230 | #else |
1231 | if (egid == gid) /* special case $) = $( */ |
1232 | (void)setgid(egid); |
748a9306 |
1233 | else { |
1234 | egid = (I32)getegid(); |
463ee0b2 |
1235 | croak("setegid() not implemented"); |
748a9306 |
1236 | } |
79072805 |
1237 | #endif |
1238 | #endif |
85e6fe83 |
1239 | #endif |
79072805 |
1240 | egid = (I32)getegid(); |
4633a7c4 |
1241 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1242 | break; |
1243 | case ':': |
a0d0e21e |
1244 | chopset = SvPV_force(sv,na); |
79072805 |
1245 | break; |
1246 | case '0': |
1247 | if (!origalen) { |
1248 | s = origargv[0]; |
1249 | s += strlen(s); |
1250 | /* See if all the arguments are contiguous in memory */ |
1251 | for (i = 1; i < origargc; i++) { |
1252 | if (origargv[i] == s + 1) |
1253 | s += strlen(++s); /* this one is ok too */ |
1254 | } |
1255 | if (origenviron[0] == s + 1) { /* can grab env area too? */ |
1256 | my_setenv("NoNeSuCh", Nullch); |
1257 | /* force copy of environment */ |
1258 | for (i = 0; origenviron[i]; i++) |
1259 | if (origenviron[i] == s + 1) |
1260 | s += strlen(++s); |
1261 | } |
1262 | origalen = s - origargv[0]; |
1263 | } |
a0d0e21e |
1264 | s = SvPV_force(sv,len); |
8990e307 |
1265 | i = len; |
79072805 |
1266 | if (i >= origalen) { |
1267 | i = origalen; |
1268 | SvCUR_set(sv, i); |
1269 | *SvEND(sv) = '\0'; |
1270 | Copy(s, origargv[0], i, char); |
1271 | } |
1272 | else { |
1273 | Copy(s, origargv[0], i, char); |
1274 | s = origargv[0]+i; |
1275 | *s++ = '\0'; |
1276 | while (++i < origalen) |
8990e307 |
1277 | *s++ = ' '; |
1278 | s = origargv[0]+i; |
ed6116ce |
1279 | for (i = 1; i < origargc; i++) |
8990e307 |
1280 | origargv[i] = Nullch; |
79072805 |
1281 | } |
1282 | break; |
1283 | } |
1284 | return 0; |
1285 | } |
1286 | |
1287 | I32 |
1288 | whichsig(sig) |
1289 | char *sig; |
1290 | { |
1291 | register char **sigv; |
1292 | |
1293 | for (sigv = sig_name+1; *sigv; sigv++) |
1294 | if (strEQ(sig,*sigv)) |
8e07c86e |
1295 | return sig_num[sigv - sig_name]; |
79072805 |
1296 | #ifdef SIGCLD |
1297 | if (strEQ(sig,"CHLD")) |
1298 | return SIGCLD; |
1299 | #endif |
1300 | #ifdef SIGCHLD |
1301 | if (strEQ(sig,"CLD")) |
1302 | return SIGCHLD; |
1303 | #endif |
1304 | return 0; |
1305 | } |
1306 | |
ecfc5424 |
1307 | Signal_t |
79072805 |
1308 | sighandler(sig) |
a0d0e21e |
1309 | int sig; |
79072805 |
1310 | { |
1311 | dSP; |
1312 | GV *gv; |
a0d0e21e |
1313 | HV *st; |
79072805 |
1314 | SV *sv; |
1315 | CV *cv; |
79072805 |
1316 | AV *oldstack; |
8e07c86e |
1317 | char *signame; |
79072805 |
1318 | |
1319 | #ifdef OS2 /* or anybody else who requires SIG_ACK */ |
1320 | signal(sig, SIG_ACK); |
1321 | #endif |
1322 | |
4633a7c4 |
1323 | signame = sig_name[sig]; |
8e07c86e |
1324 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),signame,strlen(signame), |
a0d0e21e |
1325 | TRUE), |
1326 | &st, &gv, TRUE); |
1327 | if (!cv || !CvROOT(cv) && |
8e07c86e |
1328 | *signame == 'C' && instr(signame,"LD")) { |
a0d0e21e |
1329 | |
8e07c86e |
1330 | if (signame[1] == 'H') |
a0d0e21e |
1331 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE), |
1332 | &st, &gv, TRUE); |
79072805 |
1333 | else |
a0d0e21e |
1334 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE), |
1335 | &st, &gv, TRUE); |
1336 | /* gag */ |
79072805 |
1337 | } |
a0d0e21e |
1338 | if (!cv || !CvROOT(cv)) { |
79072805 |
1339 | if (dowarn) |
1340 | warn("SIG%s handler \"%s\" not defined.\n", |
8e07c86e |
1341 | signame, GvENAME(gv) ); |
79072805 |
1342 | return; |
1343 | } |
1344 | |
1345 | oldstack = stack; |
a0d0e21e |
1346 | if (stack != signalstack) |
1347 | AvFILL(signalstack) = 0; |
79072805 |
1348 | SWITCHSTACK(stack, signalstack); |
1349 | |
8990e307 |
1350 | sv = sv_newmortal(); |
8e07c86e |
1351 | sv_setpv(sv,signame); |
a0d0e21e |
1352 | PUSHMARK(sp); |
79072805 |
1353 | PUSHs(sv); |
79072805 |
1354 | PUTBACK; |
a0d0e21e |
1355 | |
1356 | perl_call_sv((SV*)cv, G_DISCARD); |
79072805 |
1357 | |
1358 | SWITCHSTACK(signalstack, oldstack); |
79072805 |
1359 | |
1360 | return; |
1361 | } |