Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
3818b22b |
3 | * Copyright (c) 1991-2000, 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" |
864dbfa3 |
16 | #define PERL_IN_MG_C |
79072805 |
17 | #include "perl.h" |
18 | |
5cd24f17 |
19 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 |
20 | # ifndef NGROUPS |
21 | # define NGROUPS 32 |
22 | # endif |
23 | #endif |
24 | |
51371543 |
25 | static void restore_magic(pTHXo_ void *p); |
26 | static void unwind_handler_stack(pTHXo_ void *p); |
27 | |
c07a80fd |
28 | /* |
29 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
30 | */ |
31 | |
32 | struct magic_state { |
33 | SV* mgs_sv; |
34 | U32 mgs_flags; |
455ece5e |
35 | I32 mgs_ss_ix; |
c07a80fd |
36 | }; |
455ece5e |
37 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e |
38 | |
39 | STATIC void |
cea2e8a9 |
40 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd |
41 | { |
455ece5e |
42 | MGS* mgs; |
c07a80fd |
43 | assert(SvMAGICAL(sv)); |
44 | |
c76ac1ee |
45 | SAVEDESTRUCTOR_X(restore_magic, (void*)mgs_ix); |
455ece5e |
46 | |
47 | mgs = SSPTR(mgs_ix, MGS*); |
c07a80fd |
48 | mgs->mgs_sv = sv; |
49 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
455ece5e |
50 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd |
51 | |
52 | SvMAGICAL_off(sv); |
53 | SvREADONLY_off(sv); |
54 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd |
55 | } |
56 | |
954c1994 |
57 | /* |
58 | =for apidoc mg_magical |
59 | |
60 | Turns on the magical status of an SV. See C<sv_magic>. |
61 | |
62 | =cut |
63 | */ |
64 | |
8990e307 |
65 | void |
864dbfa3 |
66 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 |
67 | { |
68 | MAGIC* mg; |
69 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
70 | MGVTBL* vtbl = mg->mg_virtual; |
71 | if (vtbl) { |
2b260de0 |
72 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 |
73 | SvGMAGICAL_on(sv); |
74 | if (vtbl->svt_set) |
75 | SvSMAGICAL_on(sv); |
2b260de0 |
76 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 |
77 | SvRMAGICAL_on(sv); |
78 | } |
79 | } |
80 | } |
81 | |
954c1994 |
82 | /* |
83 | =for apidoc mg_get |
84 | |
85 | Do magic after a value is retrieved from the SV. See C<sv_magic>. |
86 | |
87 | =cut |
88 | */ |
89 | |
79072805 |
90 | int |
864dbfa3 |
91 | Perl_mg_get(pTHX_ SV *sv) |
79072805 |
92 | { |
455ece5e |
93 | I32 mgs_ix; |
79072805 |
94 | MAGIC* mg; |
c6496cc7 |
95 | MAGIC** mgp; |
760ac839 |
96 | int mgp_valid = 0; |
463ee0b2 |
97 | |
455ece5e |
98 | mgs_ix = SSNEW(sizeof(MGS)); |
99 | save_magic(mgs_ix, sv); |
463ee0b2 |
100 | |
c6496cc7 |
101 | mgp = &SvMAGIC(sv); |
102 | while ((mg = *mgp) != 0) { |
79072805 |
103 | MGVTBL* vtbl = mg->mg_virtual; |
2b260de0 |
104 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe |
105 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
c6496cc7 |
106 | /* Ignore this magic if it's been deleted */ |
48e43a1c |
107 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && |
108 | (mg->mg_flags & MGf_GSKIP)) |
455ece5e |
109 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
110 | } |
c6496cc7 |
111 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 |
112 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 |
113 | mgp = &mg->mg_moremagic; |
760ac839 |
114 | mgp_valid = 1; |
115 | } |
116 | else |
117 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ |
79072805 |
118 | } |
463ee0b2 |
119 | |
51371543 |
120 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
121 | return 0; |
122 | } |
123 | |
954c1994 |
124 | /* |
125 | =for apidoc mg_set |
126 | |
127 | Do magic after a value is assigned to the SV. See C<sv_magic>. |
128 | |
129 | =cut |
130 | */ |
131 | |
79072805 |
132 | int |
864dbfa3 |
133 | Perl_mg_set(pTHX_ SV *sv) |
79072805 |
134 | { |
455ece5e |
135 | I32 mgs_ix; |
79072805 |
136 | MAGIC* mg; |
463ee0b2 |
137 | MAGIC* nextmg; |
138 | |
455ece5e |
139 | mgs_ix = SSNEW(sizeof(MGS)); |
140 | save_magic(mgs_ix, sv); |
463ee0b2 |
141 | |
142 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
79072805 |
143 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
144 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
145 | if (mg->mg_flags & MGf_GSKIP) { |
146 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
455ece5e |
147 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e |
148 | } |
2b260de0 |
149 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 |
150 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 |
151 | } |
463ee0b2 |
152 | |
51371543 |
153 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
154 | return 0; |
155 | } |
156 | |
954c1994 |
157 | /* |
158 | =for apidoc mg_length |
159 | |
160 | Report on the SV's length. See C<sv_magic>. |
161 | |
162 | =cut |
163 | */ |
164 | |
79072805 |
165 | U32 |
864dbfa3 |
166 | Perl_mg_length(pTHX_ SV *sv) |
79072805 |
167 | { |
168 | MAGIC* mg; |
748a9306 |
169 | char *junk; |
463ee0b2 |
170 | STRLEN len; |
463ee0b2 |
171 | |
79072805 |
172 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
173 | MGVTBL* vtbl = mg->mg_virtual; |
2b260de0 |
174 | if (vtbl && vtbl->svt_len) { |
455ece5e |
175 | I32 mgs_ix; |
48e43a1c |
176 | |
455ece5e |
177 | mgs_ix = SSNEW(sizeof(MGS)); |
178 | save_magic(mgs_ix, sv); |
a0d0e21e |
179 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 |
180 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 |
181 | restore_magic(aTHXo_ (void*)mgs_ix); |
85e6fe83 |
182 | return len; |
183 | } |
184 | } |
185 | |
748a9306 |
186 | junk = SvPV(sv, len); |
463ee0b2 |
187 | return len; |
79072805 |
188 | } |
189 | |
93965878 |
190 | I32 |
864dbfa3 |
191 | Perl_mg_size(pTHX_ SV *sv) |
93965878 |
192 | { |
193 | MAGIC* mg; |
194 | I32 len; |
ac27b0f5 |
195 | |
93965878 |
196 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
197 | MGVTBL* vtbl = mg->mg_virtual; |
2b260de0 |
198 | if (vtbl && vtbl->svt_len) { |
455ece5e |
199 | I32 mgs_ix; |
200 | |
201 | mgs_ix = SSNEW(sizeof(MGS)); |
202 | save_magic(mgs_ix, sv); |
93965878 |
203 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 |
204 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
51371543 |
205 | restore_magic(aTHXo_ (void*)mgs_ix); |
93965878 |
206 | return len; |
207 | } |
208 | } |
209 | |
210 | switch(SvTYPE(sv)) { |
211 | case SVt_PVAV: |
212 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
213 | return len; |
214 | case SVt_PVHV: |
215 | /* FIXME */ |
216 | default: |
cea2e8a9 |
217 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 |
218 | break; |
219 | } |
220 | return 0; |
221 | } |
222 | |
954c1994 |
223 | /* |
224 | =for apidoc mg_clear |
225 | |
226 | Clear something magical that the SV represents. See C<sv_magic>. |
227 | |
228 | =cut |
229 | */ |
230 | |
79072805 |
231 | int |
864dbfa3 |
232 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 |
233 | { |
455ece5e |
234 | I32 mgs_ix; |
79072805 |
235 | MAGIC* mg; |
463ee0b2 |
236 | |
455ece5e |
237 | mgs_ix = SSNEW(sizeof(MGS)); |
238 | save_magic(mgs_ix, sv); |
463ee0b2 |
239 | |
79072805 |
240 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
241 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
242 | /* omit GSKIP -- never set here */ |
243 | |
2b260de0 |
244 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 |
245 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 |
246 | } |
463ee0b2 |
247 | |
51371543 |
248 | restore_magic(aTHXo_ (void*)mgs_ix); |
79072805 |
249 | return 0; |
250 | } |
251 | |
954c1994 |
252 | /* |
253 | =for apidoc mg_find |
254 | |
255 | Finds the magic pointer for type matching the SV. See C<sv_magic>. |
256 | |
257 | =cut |
258 | */ |
259 | |
93a17b20 |
260 | MAGIC* |
864dbfa3 |
261 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 |
262 | { |
263 | MAGIC* mg; |
3f8f4626 |
264 | if (!sv) |
265 | return 0; |
93a17b20 |
266 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
267 | if (mg->mg_type == type) |
268 | return mg; |
269 | } |
270 | return 0; |
271 | } |
272 | |
954c1994 |
273 | /* |
274 | =for apidoc mg_copy |
275 | |
276 | Copies the magic from one SV to another. See C<sv_magic>. |
277 | |
278 | =cut |
279 | */ |
280 | |
79072805 |
281 | int |
864dbfa3 |
282 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 |
283 | { |
463ee0b2 |
284 | int count = 0; |
79072805 |
285 | MAGIC* mg; |
463ee0b2 |
286 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
287 | if (isUPPER(mg->mg_type)) { |
33c27489 |
288 | sv_magic(nsv, |
fd345fa8 |
289 | mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : |
290 | (mg->mg_type == 'D' && mg->mg_obj) ? sv : mg->mg_obj, |
33c27489 |
291 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 |
292 | count++; |
79072805 |
293 | } |
79072805 |
294 | } |
463ee0b2 |
295 | return count; |
79072805 |
296 | } |
297 | |
954c1994 |
298 | /* |
299 | =for apidoc mg_free |
300 | |
301 | Free any magic storage used by the SV. See C<sv_magic>. |
302 | |
303 | =cut |
304 | */ |
305 | |
79072805 |
306 | int |
864dbfa3 |
307 | Perl_mg_free(pTHX_ SV *sv) |
79072805 |
308 | { |
309 | MAGIC* mg; |
310 | MAGIC* moremagic; |
311 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
312 | MGVTBL* vtbl = mg->mg_virtual; |
313 | moremagic = mg->mg_moremagic; |
2b260de0 |
314 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 |
315 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
93a17b20 |
316 | if (mg->mg_ptr && mg->mg_type != 'g') |
565764a8 |
317 | if (mg->mg_len >= 0) |
88e89b8a |
318 | Safefree(mg->mg_ptr); |
565764a8 |
319 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a |
320 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 |
321 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 |
322 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
323 | Safefree(mg); |
324 | } |
325 | SvMAGIC(sv) = 0; |
326 | return 0; |
327 | } |
328 | |
329 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
330 | #include <signal.h> |
331 | #endif |
332 | |
942e002e |
333 | U32 |
864dbfa3 |
334 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
335 | { |
6cef1e77 |
336 | register REGEXP *rx; |
6cef1e77 |
337 | |
8f580fb8 |
338 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
339 | if (mg->mg_obj) /* @+ */ |
340 | return rx->nparens; |
341 | else /* @- */ |
342 | return rx->lastparen; |
343 | } |
ac27b0f5 |
344 | |
942e002e |
345 | return (U32)-1; |
6cef1e77 |
346 | } |
347 | |
348 | int |
864dbfa3 |
349 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 |
350 | { |
6cef1e77 |
351 | register I32 paren; |
cf93c79d |
352 | register I32 s; |
6cef1e77 |
353 | register I32 i; |
354 | register REGEXP *rx; |
cf93c79d |
355 | I32 t; |
6cef1e77 |
356 | |
357 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
358 | paren = mg->mg_len; |
359 | if (paren < 0) |
360 | return 0; |
361 | if (paren <= rx->nparens && |
cf93c79d |
362 | (s = rx->startp[paren]) != -1 && |
363 | (t = rx->endp[paren]) != -1) |
6cef1e77 |
364 | { |
365 | if (mg->mg_obj) /* @+ */ |
cf93c79d |
366 | i = t; |
6cef1e77 |
367 | else /* @- */ |
cf93c79d |
368 | i = s; |
6cef1e77 |
369 | sv_setiv(sv,i); |
370 | } |
371 | } |
372 | return 0; |
373 | } |
374 | |
e4b89193 |
375 | int |
a29d06ed |
376 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
377 | { |
a29d06ed |
378 | Perl_croak(aTHX_ PL_no_modify); |
e4b89193 |
379 | /* NOT REACHED */ |
380 | return 0; |
a29d06ed |
381 | } |
382 | |
93a17b20 |
383 | U32 |
864dbfa3 |
384 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
385 | { |
386 | register I32 paren; |
93a17b20 |
387 | register I32 i; |
d9f97599 |
388 | register REGEXP *rx; |
a197cbdd |
389 | I32 s1, t1; |
93a17b20 |
390 | |
391 | switch (*mg->mg_ptr) { |
392 | case '1': case '2': case '3': case '4': |
393 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
394 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
395 | |
ffc61ed2 |
396 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 |
397 | getparen: |
d9f97599 |
398 | if (paren <= rx->nparens && |
cf93c79d |
399 | (s1 = rx->startp[paren]) != -1 && |
400 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
401 | { |
cf93c79d |
402 | i = t1 - s1; |
a197cbdd |
403 | getlen: |
ffc61ed2 |
404 | if (i > 0 && DO_UTF8(PL_reg_sv)) { |
405 | char *s = rx->subbeg + s1; |
a197cbdd |
406 | char *send = rx->subbeg + t1; |
ffc61ed2 |
407 | |
c7d7d594 |
408 | i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send); |
a197cbdd |
409 | } |
ffc61ed2 |
410 | if (i < 0) |
411 | Perl_croak(aTHX_ "panic: magic_len: %d", i); |
412 | return i; |
93a17b20 |
413 | } |
93a17b20 |
414 | } |
748a9306 |
415 | return 0; |
93a17b20 |
416 | case '+': |
3280af22 |
417 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
418 | paren = rx->lastparen; |
13f57bf8 |
419 | if (paren) |
420 | goto getparen; |
93a17b20 |
421 | } |
748a9306 |
422 | return 0; |
93a17b20 |
423 | case '`': |
3280af22 |
424 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
425 | if (rx->startp[0] != -1) { |
426 | i = rx->startp[0]; |
a197cbdd |
427 | if (i > 0) { |
428 | s1 = 0; |
429 | t1 = i; |
430 | goto getlen; |
431 | } |
93a17b20 |
432 | } |
93a17b20 |
433 | } |
748a9306 |
434 | return 0; |
93a17b20 |
435 | case '\'': |
3280af22 |
436 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
437 | if (rx->endp[0] != -1) { |
438 | i = rx->sublen - rx->endp[0]; |
a197cbdd |
439 | if (i > 0) { |
440 | s1 = rx->endp[0]; |
441 | t1 = rx->sublen; |
442 | goto getlen; |
443 | } |
93a17b20 |
444 | } |
93a17b20 |
445 | } |
748a9306 |
446 | return 0; |
93a17b20 |
447 | } |
448 | magic_get(sv,mg); |
2d8e6c8d |
449 | if (!SvPOK(sv) && SvNIOK(sv)) { |
450 | STRLEN n_a; |
451 | sv_2pv(sv, &n_a); |
452 | } |
93a17b20 |
453 | if (SvPOK(sv)) |
454 | return SvCUR(sv); |
455 | return 0; |
456 | } |
457 | |
79072805 |
458 | int |
864dbfa3 |
459 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
460 | { |
461 | register I32 paren; |
462 | register char *s; |
463 | register I32 i; |
d9f97599 |
464 | register REGEXP *rx; |
79072805 |
465 | |
466 | switch (*mg->mg_ptr) { |
748a9306 |
467 | case '\001': /* ^A */ |
3280af22 |
468 | sv_setsv(sv, PL_bodytarget); |
748a9306 |
469 | break; |
49460fe6 |
470 | case '\003': /* ^C */ |
471 | sv_setiv(sv, (IV)PL_minus_c); |
472 | break; |
473 | |
79072805 |
474 | case '\004': /* ^D */ |
3280af22 |
475 | sv_setiv(sv, (IV)(PL_debug & 32767)); |
d056ab3f |
476 | #if defined(YYDEBUG) && defined(DEBUGGING) |
477 | PL_yydebug = (PL_debug & 1); |
478 | #endif |
79072805 |
479 | break; |
28f23441 |
480 | case '\005': /* ^E */ |
cd39f2b6 |
481 | #ifdef MACOS_TRADITIONAL |
482 | { |
483 | char msg[256]; |
ac27b0f5 |
484 | |
bf4acbe4 |
485 | sv_setnv(sv,(double)gMacPerl_OSErr); |
486 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
cd39f2b6 |
487 | } |
488 | #else |
28f23441 |
489 | #ifdef VMS |
490 | { |
491 | # include <descrip.h> |
492 | # include <starlet.h> |
493 | char msg[255]; |
494 | $DESCRIPTOR(msgdsc,msg); |
65202027 |
495 | sv_setnv(sv,(NV) vaxc$errno); |
28f23441 |
496 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
497 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
498 | else |
499 | sv_setpv(sv,""); |
500 | } |
501 | #else |
88e89b8a |
502 | #ifdef OS2 |
fb73857a |
503 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
65202027 |
504 | sv_setnv(sv, (NV)errno); |
fb73857a |
505 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
506 | } else { |
017f25f1 |
507 | if (errno != errno_isOS2) { |
508 | int tmp = _syserrno(); |
509 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ |
510 | Perl_rc = tmp; |
511 | } |
65202027 |
512 | sv_setnv(sv, (NV)Perl_rc); |
fb73857a |
513 | sv_setpv(sv, os2error(Perl_rc)); |
514 | } |
88e89b8a |
515 | #else |
22fae026 |
516 | #ifdef WIN32 |
517 | { |
518 | DWORD dwErr = GetLastError(); |
65202027 |
519 | sv_setnv(sv, (NV)dwErr); |
22fae026 |
520 | if (dwErr) |
76e3520e |
521 | { |
0cb96387 |
522 | PerlProc_GetOSError(sv, dwErr); |
76e3520e |
523 | } |
22fae026 |
524 | else |
525 | sv_setpv(sv, ""); |
526 | SetLastError(dwErr); |
527 | } |
528 | #else |
65202027 |
529 | sv_setnv(sv, (NV)errno); |
28f23441 |
530 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
531 | #endif |
88e89b8a |
532 | #endif |
22fae026 |
533 | #endif |
cd39f2b6 |
534 | #endif |
946ec16e |
535 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 |
536 | break; |
79072805 |
537 | case '\006': /* ^F */ |
3280af22 |
538 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 |
539 | break; |
a0d0e21e |
540 | case '\010': /* ^H */ |
3280af22 |
541 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e |
542 | break; |
9d116dd7 |
543 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
544 | if (PL_inplace) |
545 | sv_setpv(sv, PL_inplace); |
79072805 |
546 | else |
3280af22 |
547 | sv_setsv(sv, &PL_sv_undef); |
79072805 |
548 | break; |
ac27b0f5 |
549 | case '\017': /* ^O & ^OPEN */ |
550 | if (*(mg->mg_ptr+1) == '\0') |
551 | sv_setpv(sv, PL_osname); |
552 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
553 | if (!PL_compiling.cop_io) |
554 | sv_setsv(sv, &PL_sv_undef); |
555 | else { |
556 | sv_setsv(sv, PL_compiling.cop_io); |
557 | } |
558 | } |
28f23441 |
559 | break; |
79072805 |
560 | case '\020': /* ^P */ |
3280af22 |
561 | sv_setiv(sv, (IV)PL_perldb); |
79072805 |
562 | break; |
fb73857a |
563 | case '\023': /* ^S */ |
d58bf5aa |
564 | { |
3280af22 |
565 | if (PL_lex_state != LEX_NOTPARSING) |
155aba94 |
566 | (void)SvOK_off(sv); |
3280af22 |
567 | else if (PL_in_eval) |
6dc8a9e4 |
568 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
d58bf5aa |
569 | } |
fb73857a |
570 | break; |
79072805 |
571 | case '\024': /* ^T */ |
88e89b8a |
572 | #ifdef BIG_TIME |
6b88bc9c |
573 | sv_setnv(sv, PL_basetime); |
88e89b8a |
574 | #else |
3280af22 |
575 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a |
576 | #endif |
79072805 |
577 | break; |
46487f74 |
578 | case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */ |
4438c4b7 |
579 | if (*(mg->mg_ptr+1) == '\0') |
580 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); |
6a818117 |
581 | else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) { |
d3a7d8c7 |
582 | if (PL_compiling.cop_warnings == pWARN_NONE || |
583 | PL_compiling.cop_warnings == pWARN_STD) |
4438c4b7 |
584 | { |
585 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; |
586 | } |
d3a7d8c7 |
587 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
4438c4b7 |
588 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; |
ac27b0f5 |
589 | } |
4438c4b7 |
590 | else { |
591 | sv_setsv(sv, PL_compiling.cop_warnings); |
ac27b0f5 |
592 | } |
d3a7d8c7 |
593 | SvPOK_only(sv); |
4438c4b7 |
594 | } |
46487f74 |
595 | else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS")) |
596 | sv_setiv(sv, (IV)PL_widesyscalls); |
79072805 |
597 | break; |
598 | case '1': case '2': case '3': case '4': |
599 | case '5': case '6': case '7': case '8': case '9': case '&': |
3280af22 |
600 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
601 | I32 s1, t1; |
602 | |
a863c7d1 |
603 | /* |
604 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); |
605 | * XXX Does the new way break anything? |
606 | */ |
ffc61ed2 |
607 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 |
608 | getparen: |
d9f97599 |
609 | if (paren <= rx->nparens && |
cf93c79d |
610 | (s1 = rx->startp[paren]) != -1 && |
611 | (t1 = rx->endp[paren]) != -1) |
bbce6d69 |
612 | { |
cf93c79d |
613 | i = t1 - s1; |
614 | s = rx->subbeg + s1; |
01ec43d0 |
615 | if (!rx->subbeg) |
c2e66d9e |
616 | break; |
617 | |
13f57bf8 |
618 | getrx: |
748a9306 |
619 | if (i >= 0) { |
13f57bf8 |
620 | bool was_tainted; |
3280af22 |
621 | if (PL_tainting) { |
622 | was_tainted = PL_tainted; |
623 | PL_tainted = FALSE; |
13f57bf8 |
624 | } |
cf93c79d |
625 | sv_setpvn(sv, s, i); |
ffc61ed2 |
626 | if (DO_UTF8(PL_reg_sv)) |
7e2040f0 |
627 | SvUTF8_on(sv); |
628 | else |
629 | SvUTF8_off(sv); |
3280af22 |
630 | if (PL_tainting) |
631 | PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx)); |
748a9306 |
632 | break; |
633 | } |
79072805 |
634 | } |
79072805 |
635 | } |
3280af22 |
636 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
637 | break; |
638 | case '+': |
3280af22 |
639 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
d9f97599 |
640 | paren = rx->lastparen; |
a0d0e21e |
641 | if (paren) |
642 | goto getparen; |
79072805 |
643 | } |
3280af22 |
644 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
645 | break; |
646 | case '`': |
3280af22 |
647 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
648 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
649 | i = rx->startp[0]; |
13f57bf8 |
650 | goto getrx; |
79072805 |
651 | } |
79072805 |
652 | } |
3280af22 |
653 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
654 | break; |
655 | case '\'': |
3280af22 |
656 | if (PL_curpm && (rx = PL_curpm->op_pmregexp)) { |
cf93c79d |
657 | if (rx->subbeg && rx->endp[0] != -1) { |
658 | s = rx->subbeg + rx->endp[0]; |
659 | i = rx->sublen - rx->endp[0]; |
13f57bf8 |
660 | goto getrx; |
79072805 |
661 | } |
79072805 |
662 | } |
3280af22 |
663 | sv_setsv(sv,&PL_sv_undef); |
79072805 |
664 | break; |
665 | case '.': |
666 | #ifndef lint |
3280af22 |
667 | if (GvIO(PL_last_in_gv)) { |
668 | sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv))); |
79072805 |
669 | } |
670 | #endif |
671 | break; |
672 | case '?': |
809a5acc |
673 | { |
809a5acc |
674 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 |
675 | #ifdef COMPLEX_STATUS |
6b88bc9c |
676 | LvTARGOFF(sv) = PL_statusvalue; |
677 | LvTARGLEN(sv) = PL_statusvalue_vms; |
ff0cee69 |
678 | #endif |
809a5acc |
679 | } |
79072805 |
680 | break; |
681 | case '^': |
3280af22 |
682 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); |
79072805 |
683 | if (s) |
684 | sv_setpv(sv,s); |
685 | else { |
3280af22 |
686 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 |
687 | sv_catpv(sv,"_TOP"); |
688 | } |
689 | break; |
690 | case '~': |
3280af22 |
691 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); |
79072805 |
692 | if (!s) |
3280af22 |
693 | s = GvENAME(PL_defoutgv); |
79072805 |
694 | sv_setpv(sv,s); |
695 | break; |
696 | #ifndef lint |
697 | case '=': |
3280af22 |
698 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); |
79072805 |
699 | break; |
700 | case '-': |
3280af22 |
701 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); |
79072805 |
702 | break; |
703 | case '%': |
3280af22 |
704 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); |
79072805 |
705 | break; |
706 | #endif |
707 | case ':': |
708 | break; |
709 | case '/': |
710 | break; |
711 | case '[': |
3280af22 |
712 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 |
713 | break; |
714 | case '|': |
3280af22 |
715 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
716 | break; |
717 | case ',': |
79072805 |
718 | break; |
719 | case '\\': |
79072805 |
720 | break; |
721 | case '#': |
3280af22 |
722 | sv_setpv(sv,PL_ofmt); |
79072805 |
723 | break; |
724 | case '!': |
a5f75d66 |
725 | #ifdef VMS |
65202027 |
726 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a |
727 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 |
728 | #else |
88e89b8a |
729 | { |
730 | int saveerrno = errno; |
65202027 |
731 | sv_setnv(sv, (NV)errno); |
88e89b8a |
732 | #ifdef OS2 |
ed344e4f |
733 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
734 | sv_setpv(sv, os2error(Perl_rc)); |
88e89b8a |
735 | else |
a5f75d66 |
736 | #endif |
2304df62 |
737 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a |
738 | errno = saveerrno; |
739 | } |
740 | #endif |
946ec16e |
741 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 |
742 | break; |
743 | case '<': |
3280af22 |
744 | sv_setiv(sv, (IV)PL_uid); |
79072805 |
745 | break; |
746 | case '>': |
3280af22 |
747 | sv_setiv(sv, (IV)PL_euid); |
79072805 |
748 | break; |
749 | case '(': |
3280af22 |
750 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 |
751 | #ifdef HAS_GETGROUPS |
785fb66b |
752 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 |
753 | #endif |
79072805 |
754 | goto add_groups; |
755 | case ')': |
3280af22 |
756 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 |
757 | #ifdef HAS_GETGROUPS |
785fb66b |
758 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 |
759 | #endif |
79072805 |
760 | add_groups: |
79072805 |
761 | #ifdef HAS_GETGROUPS |
79072805 |
762 | { |
a0d0e21e |
763 | Groups_t gary[NGROUPS]; |
79072805 |
764 | i = getgroups(NGROUPS,gary); |
46fc3d4c |
765 | while (--i >= 0) |
785fb66b |
766 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 |
767 | } |
768 | #endif |
155aba94 |
769 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 |
770 | break; |
771 | case '*': |
772 | break; |
cd39f2b6 |
773 | #ifndef MACOS_TRADITIONAL |
79072805 |
774 | case '0': |
775 | break; |
cd39f2b6 |
776 | #endif |
a863c7d1 |
777 | #ifdef USE_THREADS |
778 | case '@': |
38a03e6e |
779 | sv_setsv(sv, thr->errsv); |
a863c7d1 |
780 | break; |
781 | #endif /* USE_THREADS */ |
79072805 |
782 | } |
a0d0e21e |
783 | return 0; |
79072805 |
784 | } |
785 | |
786 | int |
864dbfa3 |
787 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
788 | { |
789 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
790 | |
791 | if (uf && uf->uf_val) |
792 | (*uf->uf_val)(uf->uf_index, sv); |
793 | return 0; |
794 | } |
795 | |
796 | int |
864dbfa3 |
797 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
798 | { |
799 | register char *s; |
88e89b8a |
800 | char *ptr; |
5aabfad6 |
801 | STRLEN len, klen; |
a0d0e21e |
802 | I32 i; |
1e422769 |
803 | |
a0d0e21e |
804 | s = SvPV(sv,len); |
5aabfad6 |
805 | ptr = MgPV(mg,klen); |
88e89b8a |
806 | my_setenv(ptr, s); |
1e422769 |
807 | |
a0d0e21e |
808 | #ifdef DYNAMIC_ENV_FETCH |
809 | /* We just undefd an environment var. Is a replacement */ |
810 | /* waiting in the wings? */ |
811 | if (!len) { |
5aabfad6 |
812 | SV **valp; |
6b88bc9c |
813 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 |
814 | s = SvPV(*valp, len); |
a0d0e21e |
815 | } |
816 | #endif |
1e422769 |
817 | |
39e571d4 |
818 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 |
819 | /* And you'll never guess what the dog had */ |
820 | /* in its mouth... */ |
3280af22 |
821 | if (PL_tainting) { |
1e422769 |
822 | MgTAINTEDDIR_off(mg); |
823 | #ifdef VMS |
5aabfad6 |
824 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 |
825 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
826 | struct stat sbuf; |
827 | int i = 0, j = 0; |
828 | |
829 | do { /* DCL$PATH may be a search list */ |
830 | while (1) { /* as may dev portion of any element */ |
831 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { |
832 | if ( *(cp+1) == '.' || *(cp+1) == '-' || |
833 | cando_by_name(S_IWUSR,0,elt) ) { |
834 | MgTAINTEDDIR_on(mg); |
835 | return 0; |
836 | } |
837 | } |
838 | if ((cp = strchr(elt, ':')) != Nullch) |
839 | *cp = '\0'; |
840 | if (my_trnlnm(elt, eltbuf, j++)) |
841 | elt = eltbuf; |
842 | else |
843 | break; |
844 | } |
845 | j = 0; |
846 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); |
847 | } |
848 | #endif /* VMS */ |
5aabfad6 |
849 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e |
850 | char *strend = s + len; |
463ee0b2 |
851 | |
852 | while (s < strend) { |
96827780 |
853 | char tmpbuf[256]; |
1e422769 |
854 | struct stat st; |
96827780 |
855 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e |
856 | s, strend, ':', &i); |
463ee0b2 |
857 | s++; |
96827780 |
858 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
859 | || *tmpbuf != '/' |
c6ed36e1 |
860 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 |
861 | MgTAINTEDDIR_on(mg); |
1e422769 |
862 | return 0; |
863 | } |
463ee0b2 |
864 | } |
79072805 |
865 | } |
866 | } |
39e571d4 |
867 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 |
868 | |
79072805 |
869 | return 0; |
870 | } |
871 | |
872 | int |
864dbfa3 |
873 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 |
874 | { |
2d8e6c8d |
875 | STRLEN n_a; |
876 | my_setenv(MgPV(mg,n_a),Nullch); |
85e6fe83 |
877 | return 0; |
878 | } |
879 | |
88e89b8a |
880 | int |
864dbfa3 |
881 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a |
882 | { |
883 | #if defined(VMS) |
cea2e8a9 |
884 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a |
885 | #else |
3280af22 |
886 | if (PL_localizing) { |
fb73857a |
887 | HE* entry; |
2d8e6c8d |
888 | STRLEN n_a; |
fb73857a |
889 | magic_clear_all_env(sv,mg); |
890 | hv_iterinit((HV*)sv); |
155aba94 |
891 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a |
892 | I32 keylen; |
893 | my_setenv(hv_iterkey(entry, &keylen), |
2d8e6c8d |
894 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a |
895 | } |
896 | } |
897 | #endif |
898 | return 0; |
899 | } |
900 | |
901 | int |
864dbfa3 |
902 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 |
903 | { |
ed79a026 |
904 | #if defined(VMS) || defined(EPOC) |
cea2e8a9 |
905 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d |
906 | #else |
7766f137 |
907 | # ifdef PERL_IMPLICIT_SYS |
908 | PerlEnv_clearenv(); |
909 | # else |
910 | # ifdef WIN32 |
3e3baf6d |
911 | char *envv = GetEnvironmentStrings(); |
912 | char *cur = envv; |
913 | STRLEN len; |
914 | while (*cur) { |
915 | char *end = strchr(cur,'='); |
916 | if (end && end != cur) { |
917 | *end = '\0'; |
918 | my_setenv(cur,Nullch); |
919 | *end = '='; |
ac5c734f |
920 | cur = end + strlen(end+1)+2; |
3e3baf6d |
921 | } |
922 | else if ((len = strlen(cur))) |
923 | cur += len+1; |
924 | } |
925 | FreeEnvironmentStrings(envv); |
7766f137 |
926 | # else |
927 | # ifndef PERL_USE_SAFE_PUTENV |
66b1d557 |
928 | I32 i; |
929 | |
3280af22 |
930 | if (environ == PL_origenviron) |
f2517201 |
931 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 |
932 | else |
933 | for (i = 0; environ[i]; i++) |
f2517201 |
934 | safesysfree(environ[i]); |
7766f137 |
935 | # endif /* PERL_USE_SAFE_PUTENV */ |
f2517201 |
936 | |
66b1d557 |
937 | environ[0] = Nullch; |
938 | |
7766f137 |
939 | # endif /* WIN32 */ |
940 | # endif /* PERL_IMPLICIT_SYS */ |
f2517201 |
941 | #endif /* VMS */ |
3e3baf6d |
942 | return 0; |
66b1d557 |
943 | } |
944 | |
64ca3a65 |
945 | #ifndef PERL_MICRO |
66b1d557 |
946 | int |
864dbfa3 |
947 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
948 | { |
949 | I32 i; |
2d8e6c8d |
950 | STRLEN n_a; |
88e89b8a |
951 | /* Are we fetching a signal entry? */ |
2d8e6c8d |
952 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a |
953 | if (i) { |
22c35a8c |
954 | if(PL_psig_ptr[i]) |
955 | sv_setsv(sv,PL_psig_ptr[i]); |
88e89b8a |
956 | else { |
ff68c719 |
957 | Sighandler_t sigstate = rsignal_state(i); |
958 | |
88e89b8a |
959 | /* cache state so we don't fetch it again */ |
ff68c719 |
960 | if(sigstate == SIG_IGN) |
88e89b8a |
961 | sv_setpv(sv,"IGNORE"); |
962 | else |
3280af22 |
963 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c |
964 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
965 | SvTEMP_off(sv); |
966 | } |
967 | } |
968 | return 0; |
969 | } |
970 | int |
864dbfa3 |
971 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a |
972 | { |
973 | I32 i; |
2d8e6c8d |
974 | STRLEN n_a; |
88e89b8a |
975 | /* Are we clearing a signal entry? */ |
2d8e6c8d |
976 | i = whichsig(MgPV(mg,n_a)); |
88e89b8a |
977 | if (i) { |
22c35a8c |
978 | if(PL_psig_ptr[i]) { |
979 | SvREFCNT_dec(PL_psig_ptr[i]); |
980 | PL_psig_ptr[i]=0; |
88e89b8a |
981 | } |
22c35a8c |
982 | if(PL_psig_name[i]) { |
983 | SvREFCNT_dec(PL_psig_name[i]); |
984 | PL_psig_name[i]=0; |
88e89b8a |
985 | } |
986 | } |
987 | return 0; |
988 | } |
3d37d572 |
989 | |
85e6fe83 |
990 | int |
864dbfa3 |
991 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
992 | { |
993 | register char *s; |
994 | I32 i; |
748a9306 |
995 | SV** svp; |
e72dc28c |
996 | STRLEN len; |
a0d0e21e |
997 | |
e72dc28c |
998 | s = MgPV(mg,len); |
748a9306 |
999 | if (*s == '_') { |
1000 | if (strEQ(s,"__DIE__")) |
3280af22 |
1001 | svp = &PL_diehook; |
748a9306 |
1002 | else if (strEQ(s,"__WARN__")) |
3280af22 |
1003 | svp = &PL_warnhook; |
748a9306 |
1004 | else |
cea2e8a9 |
1005 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 |
1006 | i = 0; |
4633a7c4 |
1007 | if (*svp) { |
1008 | SvREFCNT_dec(*svp); |
1009 | *svp = 0; |
1010 | } |
748a9306 |
1011 | } |
1012 | else { |
1013 | i = whichsig(s); /* ...no, a brick */ |
1014 | if (!i) { |
e476b1b5 |
1015 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 |
1016 | Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s); |
748a9306 |
1017 | return 0; |
1018 | } |
22c35a8c |
1019 | SvREFCNT_dec(PL_psig_name[i]); |
1020 | SvREFCNT_dec(PL_psig_ptr[i]); |
1021 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a |
1022 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c |
1023 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c |
1024 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 |
1025 | } |
a0d0e21e |
1026 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 |
1027 | if (i) |
3280af22 |
1028 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
1029 | else |
1030 | *svp = SvREFCNT_inc(sv); |
a0d0e21e |
1031 | return 0; |
1032 | } |
e72dc28c |
1033 | s = SvPV_force(sv,len); |
748a9306 |
1034 | if (strEQ(s,"IGNORE")) { |
1035 | if (i) |
ff68c719 |
1036 | (void)rsignal(i, SIG_IGN); |
748a9306 |
1037 | else |
1038 | *svp = 0; |
1039 | } |
1040 | else if (strEQ(s,"DEFAULT") || !*s) { |
1041 | if (i) |
ff68c719 |
1042 | (void)rsignal(i, SIG_DFL); |
748a9306 |
1043 | else |
1044 | *svp = 0; |
1045 | } |
79072805 |
1046 | else { |
5aabfad6 |
1047 | /* |
1048 | * We should warn if HINT_STRICT_REFS, but without |
1049 | * access to a known hint bit in a known OP, we can't |
1050 | * tell whether HINT_STRICT_REFS is in force or not. |
1051 | */ |
46fc3d4c |
1052 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c |
1053 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 |
1054 | if (i) |
3280af22 |
1055 | (void)rsignal(i, PL_sighandlerp); |
748a9306 |
1056 | else |
1057 | *svp = SvREFCNT_inc(sv); |
79072805 |
1058 | } |
1059 | return 0; |
1060 | } |
64ca3a65 |
1061 | #endif /* !PERL_MICRO */ |
79072805 |
1062 | |
1063 | int |
864dbfa3 |
1064 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1065 | { |
3280af22 |
1066 | PL_sub_generation++; |
463ee0b2 |
1067 | return 0; |
1068 | } |
1069 | |
1070 | int |
864dbfa3 |
1071 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1072 | { |
a0d0e21e |
1073 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 |
1074 | PL_amagic_generation++; |
463ee0b2 |
1075 | |
a0d0e21e |
1076 | return 0; |
1077 | } |
463ee0b2 |
1078 | |
946ec16e |
1079 | int |
864dbfa3 |
1080 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1081 | { |
1082 | HV *hv = (HV*)LvTARG(sv); |
1083 | HE *entry; |
1084 | I32 i = 0; |
1085 | |
1086 | if (hv) { |
1087 | (void) hv_iterinit(hv); |
33c27489 |
1088 | if (! SvTIED_mg((SV*)hv, 'P')) |
6ff81951 |
1089 | i = HvKEYS(hv); |
1090 | else { |
1091 | /*SUPPRESS 560*/ |
155aba94 |
1092 | while ((entry = hv_iternext(hv))) { |
6ff81951 |
1093 | i++; |
1094 | } |
1095 | } |
1096 | } |
1097 | |
1098 | sv_setiv(sv, (IV)i); |
1099 | return 0; |
1100 | } |
1101 | |
1102 | int |
864dbfa3 |
1103 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e |
1104 | { |
1105 | if (LvTARG(sv)) { |
1106 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
946ec16e |
1107 | } |
1108 | return 0; |
ac27b0f5 |
1109 | } |
946ec16e |
1110 | |
e336de0d |
1111 | /* caller is responsible for stack switching/cleanup */ |
565764a8 |
1112 | STATIC int |
cea2e8a9 |
1113 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e |
1114 | { |
1115 | dSP; |
463ee0b2 |
1116 | |
924508f0 |
1117 | PUSHMARK(SP); |
1118 | EXTEND(SP, n); |
33c27489 |
1119 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 |
1120 | if (n > 1) { |
93965878 |
1121 | if (mg->mg_ptr) { |
565764a8 |
1122 | if (mg->mg_len >= 0) |
79cb57f6 |
1123 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 |
1124 | else if (mg->mg_len == HEf_SVKEY) |
93965878 |
1125 | PUSHs((SV*)mg->mg_ptr); |
1126 | } |
1127 | else if (mg->mg_type == 'p') { |
565764a8 |
1128 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 |
1129 | } |
1130 | } |
1131 | if (n > 2) { |
1132 | PUSHs(val); |
88e89b8a |
1133 | } |
463ee0b2 |
1134 | PUTBACK; |
1135 | |
864dbfa3 |
1136 | return call_method(meth, flags); |
946ec16e |
1137 | } |
1138 | |
76e3520e |
1139 | STATIC int |
cea2e8a9 |
1140 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e |
1141 | { |
1142 | dSP; |
463ee0b2 |
1143 | |
a0d0e21e |
1144 | ENTER; |
1145 | SAVETMPS; |
e788e7d3 |
1146 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 |
1147 | |
33c27489 |
1148 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 |
1149 | sv_setsv(sv, *PL_stack_sp--); |
93965878 |
1150 | } |
463ee0b2 |
1151 | |
d3acc0f7 |
1152 | POPSTACK; |
a0d0e21e |
1153 | FREETMPS; |
1154 | LEAVE; |
1155 | return 0; |
1156 | } |
463ee0b2 |
1157 | |
a0d0e21e |
1158 | int |
864dbfa3 |
1159 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1160 | { |
1161 | magic_methpack(sv,mg,"FETCH"); |
1162 | if (mg->mg_ptr) |
1163 | mg->mg_flags |= MGf_GSKIP; |
463ee0b2 |
1164 | return 0; |
1165 | } |
1166 | |
1167 | int |
864dbfa3 |
1168 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d |
1169 | { |
1170 | dSP; |
a60c0954 |
1171 | ENTER; |
e788e7d3 |
1172 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1173 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 |
1174 | POPSTACK; |
a60c0954 |
1175 | LEAVE; |
463ee0b2 |
1176 | return 0; |
1177 | } |
1178 | |
1179 | int |
864dbfa3 |
1180 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1181 | { |
a0d0e21e |
1182 | return magic_methpack(sv,mg,"DELETE"); |
1183 | } |
463ee0b2 |
1184 | |
93965878 |
1185 | |
1186 | U32 |
864dbfa3 |
1187 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 |
1188 | { |
e336de0d |
1189 | dSP; |
93965878 |
1190 | U32 retval = 0; |
1191 | |
1192 | ENTER; |
1193 | SAVETMPS; |
e788e7d3 |
1194 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 |
1195 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 |
1196 | sv = *PL_stack_sp--; |
a60c0954 |
1197 | retval = (U32) SvIV(sv)-1; |
93965878 |
1198 | } |
d3acc0f7 |
1199 | POPSTACK; |
93965878 |
1200 | FREETMPS; |
1201 | LEAVE; |
1202 | return retval; |
1203 | } |
1204 | |
cea2e8a9 |
1205 | int |
1206 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1207 | { |
1208 | dSP; |
463ee0b2 |
1209 | |
e336de0d |
1210 | ENTER; |
e788e7d3 |
1211 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1212 | PUSHMARK(SP); |
33c27489 |
1213 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1214 | PUTBACK; |
864dbfa3 |
1215 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 |
1216 | POPSTACK; |
a60c0954 |
1217 | LEAVE; |
463ee0b2 |
1218 | return 0; |
1219 | } |
1220 | |
1221 | int |
864dbfa3 |
1222 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 |
1223 | { |
463ee0b2 |
1224 | dSP; |
dff6d3cd |
1225 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
1226 | |
1227 | ENTER; |
a0d0e21e |
1228 | SAVETMPS; |
e788e7d3 |
1229 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 |
1230 | PUSHMARK(SP); |
1231 | EXTEND(SP, 2); |
33c27489 |
1232 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 |
1233 | if (SvOK(key)) |
1234 | PUSHs(key); |
1235 | PUTBACK; |
1236 | |
864dbfa3 |
1237 | if (call_method(meth, G_SCALAR)) |
3280af22 |
1238 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 |
1239 | |
d3acc0f7 |
1240 | POPSTACK; |
a0d0e21e |
1241 | FREETMPS; |
1242 | LEAVE; |
79072805 |
1243 | return 0; |
1244 | } |
1245 | |
1246 | int |
864dbfa3 |
1247 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1248 | { |
1249 | return magic_methpack(sv,mg,"EXISTS"); |
ac27b0f5 |
1250 | } |
a0d0e21e |
1251 | |
1252 | int |
864dbfa3 |
1253 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1254 | { |
1255 | OP *o; |
1256 | I32 i; |
1257 | GV* gv; |
1258 | SV** svp; |
2d8e6c8d |
1259 | STRLEN n_a; |
79072805 |
1260 | |
3280af22 |
1261 | gv = PL_DBline; |
79072805 |
1262 | i = SvTRUE(sv); |
188ea221 |
1263 | svp = av_fetch(GvAV(gv), |
2d8e6c8d |
1264 | atoi(MgPV(mg,n_a)), FALSE); |
57b2e452 |
1265 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) |
93a17b20 |
1266 | o->op_private = i; |
79072805 |
1267 | return 0; |
1268 | } |
1269 | |
1270 | int |
864dbfa3 |
1271 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1272 | { |
3280af22 |
1273 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 |
1274 | return 0; |
1275 | } |
1276 | |
1277 | int |
864dbfa3 |
1278 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1279 | { |
3280af22 |
1280 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e |
1281 | return 0; |
1282 | } |
1283 | |
1284 | int |
864dbfa3 |
1285 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1286 | { |
1287 | SV* lsv = LvTARG(sv); |
ac27b0f5 |
1288 | |
a0d0e21e |
1289 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
1290 | mg = mg_find(lsv, 'g'); |
565764a8 |
1291 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 |
1292 | I32 i = mg->mg_len; |
7e2040f0 |
1293 | if (DO_UTF8(lsv)) |
a0ed51b3 |
1294 | sv_pos_b2u(lsv, &i); |
1295 | sv_setiv(sv, i + PL_curcop->cop_arybase); |
a0d0e21e |
1296 | return 0; |
1297 | } |
1298 | } |
1299 | (void)SvOK_off(sv); |
1300 | return 0; |
1301 | } |
1302 | |
1303 | int |
864dbfa3 |
1304 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e |
1305 | { |
1306 | SV* lsv = LvTARG(sv); |
1307 | SSize_t pos; |
1308 | STRLEN len; |
c00206c8 |
1309 | STRLEN ulen = 0; |
a0d0e21e |
1310 | |
1311 | mg = 0; |
ac27b0f5 |
1312 | |
a0d0e21e |
1313 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
1314 | mg = mg_find(lsv, 'g'); |
1315 | if (!mg) { |
1316 | if (!SvOK(sv)) |
1317 | return 0; |
1318 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
1319 | mg = mg_find(lsv, 'g'); |
1320 | } |
1321 | else if (!SvOK(sv)) { |
565764a8 |
1322 | mg->mg_len = -1; |
a0d0e21e |
1323 | return 0; |
1324 | } |
1325 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
1326 | |
c485e607 |
1327 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 |
1328 | |
7e2040f0 |
1329 | if (DO_UTF8(lsv)) { |
a0ed51b3 |
1330 | ulen = sv_len_utf8(lsv); |
1331 | if (ulen) |
1332 | len = ulen; |
a0ed51b3 |
1333 | } |
1334 | |
a0d0e21e |
1335 | if (pos < 0) { |
1336 | pos += len; |
1337 | if (pos < 0) |
1338 | pos = 0; |
1339 | } |
1340 | else if (pos > len) |
1341 | pos = len; |
a0ed51b3 |
1342 | |
1343 | if (ulen) { |
1344 | I32 p = pos; |
1345 | sv_pos_u2b(lsv, &p, 0); |
1346 | pos = p; |
1347 | } |
1348 | |
565764a8 |
1349 | mg->mg_len = pos; |
71be2cbc |
1350 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e |
1351 | |
79072805 |
1352 | return 0; |
1353 | } |
1354 | |
1355 | int |
864dbfa3 |
1356 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1357 | { |
8646b087 |
1358 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1359 | SvFAKE_off(sv); |
946ec16e |
1360 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 |
1361 | SvFAKE_on(sv); |
1362 | } |
1363 | else |
946ec16e |
1364 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 |
1365 | return 0; |
1366 | } |
1367 | |
1368 | int |
864dbfa3 |
1369 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1370 | { |
1371 | register char *s; |
1372 | GV* gv; |
2d8e6c8d |
1373 | STRLEN n_a; |
79072805 |
1374 | |
1375 | if (!SvOK(sv)) |
1376 | return 0; |
2d8e6c8d |
1377 | s = SvPV(sv, n_a); |
79072805 |
1378 | if (*s == '*' && s[1]) |
1379 | s++; |
85e6fe83 |
1380 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 |
1381 | if (sv == (SV*)gv) |
1382 | return 0; |
1383 | if (GvGP(sv)) |
88e89b8a |
1384 | gp_free((GV*)sv); |
79072805 |
1385 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 |
1386 | return 0; |
1387 | } |
1388 | |
1389 | int |
864dbfa3 |
1390 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1391 | { |
1392 | STRLEN len; |
1393 | SV *lsv = LvTARG(sv); |
1394 | char *tmps = SvPV(lsv,len); |
1395 | I32 offs = LvTARGOFF(sv); |
1396 | I32 rem = LvTARGLEN(sv); |
1397 | |
1398 | if (offs > len) |
1399 | offs = len; |
1400 | if (rem + offs > len) |
1401 | rem = len - offs; |
1402 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); |
2ef4b674 |
1403 | if (DO_UTF8(lsv)) |
1404 | SvUTF8_on(sv); |
6ff81951 |
1405 | return 0; |
1406 | } |
1407 | |
1408 | int |
864dbfa3 |
1409 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1410 | { |
8990e307 |
1411 | STRLEN len; |
1412 | char *tmps = SvPV(sv,len); |
1413 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
79072805 |
1414 | return 0; |
1415 | } |
1416 | |
1417 | int |
864dbfa3 |
1418 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1419 | { |
565764a8 |
1420 | TAINT_IF((mg->mg_len & 1) || |
155aba94 |
1421 | ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */ |
463ee0b2 |
1422 | return 0; |
1423 | } |
1424 | |
1425 | int |
864dbfa3 |
1426 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 |
1427 | { |
3280af22 |
1428 | if (PL_localizing) { |
1429 | if (PL_localizing == 1) |
565764a8 |
1430 | mg->mg_len <<= 1; |
748a9306 |
1431 | else |
565764a8 |
1432 | mg->mg_len >>= 1; |
a0d0e21e |
1433 | } |
3280af22 |
1434 | else if (PL_tainted) |
565764a8 |
1435 | mg->mg_len |= 1; |
748a9306 |
1436 | else |
565764a8 |
1437 | mg->mg_len &= ~1; |
463ee0b2 |
1438 | return 0; |
1439 | } |
1440 | |
1441 | int |
864dbfa3 |
1442 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 |
1443 | { |
1444 | SV *lsv = LvTARG(sv); |
6ff81951 |
1445 | |
1446 | if (!lsv) { |
155aba94 |
1447 | (void)SvOK_off(sv); |
6ff81951 |
1448 | return 0; |
1449 | } |
6ff81951 |
1450 | |
81e118e0 |
1451 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 |
1452 | return 0; |
1453 | } |
1454 | |
1455 | int |
864dbfa3 |
1456 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1457 | { |
1458 | do_vecset(sv); /* XXX slurp this routine */ |
1459 | return 0; |
1460 | } |
1461 | |
1462 | int |
864dbfa3 |
1463 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc |
1464 | { |
71be2cbc |
1465 | SV *targ = Nullsv; |
5f05dabc |
1466 | if (LvTARGLEN(sv)) { |
68dc0745 |
1467 | if (mg->mg_obj) { |
74e13ce4 |
1468 | SV *ahv = LvTARG(sv); |
1469 | if (SvTYPE(ahv) == SVt_PVHV) { |
1470 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1471 | if (he) |
1472 | targ = HeVAL(he); |
1473 | } |
1474 | else { |
1475 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0); |
1476 | if (svp) |
1477 | targ = *svp; |
1478 | } |
68dc0745 |
1479 | } |
1480 | else { |
3c78fafa |
1481 | AV* av = (AV*)LvTARG(sv); |
68dc0745 |
1482 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1483 | targ = AvARRAY(av)[LvTARGOFF(sv)]; |
1484 | } |
3280af22 |
1485 | if (targ && targ != &PL_sv_undef) { |
68dc0745 |
1486 | /* somebody else defined it for us */ |
1487 | SvREFCNT_dec(LvTARG(sv)); |
1488 | LvTARG(sv) = SvREFCNT_inc(targ); |
1489 | LvTARGLEN(sv) = 0; |
1490 | SvREFCNT_dec(mg->mg_obj); |
1491 | mg->mg_obj = Nullsv; |
1492 | mg->mg_flags &= ~MGf_REFCOUNTED; |
1493 | } |
5f05dabc |
1494 | } |
71be2cbc |
1495 | else |
1496 | targ = LvTARG(sv); |
3280af22 |
1497 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc |
1498 | return 0; |
1499 | } |
1500 | |
1501 | int |
864dbfa3 |
1502 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc |
1503 | { |
1504 | if (LvTARGLEN(sv)) |
68dc0745 |
1505 | vivify_defelem(sv); |
1506 | if (LvTARG(sv)) { |
5f05dabc |
1507 | sv_setsv(LvTARG(sv), sv); |
68dc0745 |
1508 | SvSETMAGIC(LvTARG(sv)); |
1509 | } |
5f05dabc |
1510 | return 0; |
1511 | } |
1512 | |
71be2cbc |
1513 | void |
864dbfa3 |
1514 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc |
1515 | { |
74e13ce4 |
1516 | MAGIC *mg; |
1517 | SV *value = Nullsv; |
71be2cbc |
1518 | |
68dc0745 |
1519 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y'))) |
71be2cbc |
1520 | return; |
68dc0745 |
1521 | if (mg->mg_obj) { |
74e13ce4 |
1522 | SV *ahv = LvTARG(sv); |
2d8e6c8d |
1523 | STRLEN n_a; |
74e13ce4 |
1524 | if (SvTYPE(ahv) == SVt_PVHV) { |
af7f9c15 |
1525 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1526 | if (he) |
1527 | value = HeVAL(he); |
1528 | } |
1529 | else { |
af7f9c15 |
1530 | SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0); |
74e13ce4 |
1531 | if (svp) |
1532 | value = *svp; |
1533 | } |
3280af22 |
1534 | if (!value || value == &PL_sv_undef) |
cea2e8a9 |
1535 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc |
1536 | } |
68dc0745 |
1537 | else { |
1538 | AV* av = (AV*)LvTARG(sv); |
5aabfad6 |
1539 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 |
1540 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1541 | else { |
1542 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); |
3280af22 |
1543 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 |
1544 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 |
1545 | } |
1546 | } |
3e3baf6d |
1547 | (void)SvREFCNT_inc(value); |
68dc0745 |
1548 | SvREFCNT_dec(LvTARG(sv)); |
1549 | LvTARG(sv) = value; |
71be2cbc |
1550 | LvTARGLEN(sv) = 0; |
68dc0745 |
1551 | SvREFCNT_dec(mg->mg_obj); |
1552 | mg->mg_obj = Nullsv; |
1553 | mg->mg_flags &= ~MGf_REFCOUNTED; |
5f05dabc |
1554 | } |
1555 | |
1556 | int |
864dbfa3 |
1557 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 |
1558 | { |
1559 | AV *av = (AV*)mg->mg_obj; |
1560 | SV **svp = AvARRAY(av); |
1561 | I32 i = AvFILLp(av); |
1562 | while (i >= 0) { |
1563 | if (svp[i] && svp[i] != &PL_sv_undef) { |
1564 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 |
1565 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 |
1566 | /* XXX Should we check that it hasn't changed? */ |
1567 | SvRV(svp[i]) = 0; |
155aba94 |
1568 | (void)SvOK_off(svp[i]); |
810b8aa5 |
1569 | SvWEAKREF_off(svp[i]); |
1570 | svp[i] = &PL_sv_undef; |
1571 | } |
1572 | i--; |
1573 | } |
1574 | return 0; |
1575 | } |
1576 | |
1577 | int |
864dbfa3 |
1578 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 |
1579 | { |
565764a8 |
1580 | mg->mg_len = -1; |
c6496cc7 |
1581 | SvSCREAM_off(sv); |
93a17b20 |
1582 | return 0; |
1583 | } |
1584 | |
1585 | int |
864dbfa3 |
1586 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1587 | { |
463ee0b2 |
1588 | sv_unmagic(sv, 'B'); |
79072805 |
1589 | SvVALID_off(sv); |
1590 | return 0; |
1591 | } |
1592 | |
1593 | int |
864dbfa3 |
1594 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff |
1595 | { |
1596 | sv_unmagic(sv, 'f'); |
1597 | SvCOMPILED_off(sv); |
1598 | return 0; |
1599 | } |
1600 | |
1601 | int |
864dbfa3 |
1602 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1603 | { |
1604 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
1605 | |
1606 | if (uf && uf->uf_set) |
1607 | (*uf->uf_set)(uf->uf_index, sv); |
1608 | return 0; |
1609 | } |
1610 | |
c277df42 |
1611 | int |
864dbfa3 |
1612 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 |
1613 | { |
1614 | regexp *re = (regexp *)mg->mg_obj; |
1615 | ReREFCNT_dec(re); |
1616 | return 0; |
1617 | } |
1618 | |
7a4c00b4 |
1619 | #ifdef USE_LOCALE_COLLATE |
79072805 |
1620 | int |
864dbfa3 |
1621 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 |
1622 | { |
1623 | /* |
838b5b74 |
1624 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 |
1625 | * and vanished with a faint plop. |
1626 | */ |
7a4c00b4 |
1627 | if (mg->mg_ptr) { |
1628 | Safefree(mg->mg_ptr); |
1629 | mg->mg_ptr = NULL; |
565764a8 |
1630 | mg->mg_len = -1; |
7a4c00b4 |
1631 | } |
bbce6d69 |
1632 | return 0; |
1633 | } |
7a4c00b4 |
1634 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 |
1635 | |
1636 | int |
864dbfa3 |
1637 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 |
1638 | { |
1639 | register char *s; |
1640 | I32 i; |
8990e307 |
1641 | STRLEN len; |
79072805 |
1642 | switch (*mg->mg_ptr) { |
748a9306 |
1643 | case '\001': /* ^A */ |
3280af22 |
1644 | sv_setsv(PL_bodytarget, sv); |
748a9306 |
1645 | break; |
49460fe6 |
1646 | case '\003': /* ^C */ |
1647 | PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1648 | break; |
1649 | |
79072805 |
1650 | case '\004': /* ^D */ |
3280af22 |
1651 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 |
1652 | DEBUG_x(dump_all()); |
1653 | break; |
28f23441 |
1654 | case '\005': /* ^E */ |
cd39f2b6 |
1655 | #ifdef MACOS_TRADITIONAL |
bf4acbe4 |
1656 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 |
1657 | #else |
cd39f2b6 |
1658 | # ifdef VMS |
1659 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf |
1660 | # else |
cd39f2b6 |
1661 | # ifdef WIN32 |
1662 | SetLastError( SvIV(sv) ); |
1663 | # else |
1664 | # ifndef OS2 |
f86702cc |
1665 | /* will anyone ever use this? */ |
1666 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); |
cd39f2b6 |
1667 | # endif |
048c1ddf |
1668 | # endif |
1669 | # endif |
22fae026 |
1670 | #endif |
28f23441 |
1671 | break; |
79072805 |
1672 | case '\006': /* ^F */ |
3280af22 |
1673 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1674 | break; |
a0d0e21e |
1675 | case '\010': /* ^H */ |
3280af22 |
1676 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e |
1677 | break; |
9d116dd7 |
1678 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 |
1679 | if (PL_inplace) |
1680 | Safefree(PL_inplace); |
79072805 |
1681 | if (SvOK(sv)) |
2d8e6c8d |
1682 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 |
1683 | else |
3280af22 |
1684 | PL_inplace = Nullch; |
79072805 |
1685 | break; |
28f23441 |
1686 | case '\017': /* ^O */ |
ac27b0f5 |
1687 | if (*(mg->mg_ptr+1) == '\0') { |
1688 | if (PL_osname) |
1689 | Safefree(PL_osname); |
1690 | if (SvOK(sv)) |
1691 | PL_osname = savepv(SvPV(sv,len)); |
1692 | else |
1693 | PL_osname = Nullch; |
1694 | } |
1695 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
1696 | if (!PL_compiling.cop_io) |
1697 | PL_compiling.cop_io = newSVsv(sv); |
1698 | else |
1699 | sv_setsv(PL_compiling.cop_io,sv); |
1700 | } |
28f23441 |
1701 | break; |
79072805 |
1702 | case '\020': /* ^P */ |
3280af22 |
1703 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1ee4443e |
1704 | if (PL_perldb && !PL_DBsingle) |
1705 | init_debugger(); |
79072805 |
1706 | break; |
1707 | case '\024': /* ^T */ |
88e89b8a |
1708 | #ifdef BIG_TIME |
6b88bc9c |
1709 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a |
1710 | #else |
3280af22 |
1711 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a |
1712 | #endif |
79072805 |
1713 | break; |
46487f74 |
1714 | case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */ |
4438c4b7 |
1715 | if (*(mg->mg_ptr+1) == '\0') { |
1716 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
1717 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
ac27b0f5 |
1718 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 |
1719 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 |
1720 | } |
599cee73 |
1721 | } |
6a818117 |
1722 | else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) { |
4438c4b7 |
1723 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e |
1724 | if (!SvPOK(sv) && PL_localizing) { |
1725 | sv_setpvn(sv, WARN_NONEstring, WARNsize); |
d3a7d8c7 |
1726 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e |
1727 | break; |
1728 | } |
f4fc7782 |
1729 | { |
b5477537 |
1730 | STRLEN len, i; |
d3a7d8c7 |
1731 | int accumulate = 0 ; |
f4fc7782 |
1732 | int any_fatals = 0 ; |
d3a7d8c7 |
1733 | char * ptr = (char*)SvPV(sv, len) ; |
f4fc7782 |
1734 | for (i = 0 ; i < len ; ++i) { |
1735 | accumulate |= ptr[i] ; |
1736 | any_fatals |= (ptr[i] & 0xAA) ; |
1737 | } |
d3a7d8c7 |
1738 | if (!accumulate) |
1739 | PL_compiling.cop_warnings = pWARN_NONE; |
f4fc7782 |
1740 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
1741 | PL_compiling.cop_warnings = pWARN_ALL; |
1742 | PL_dowarn |= G_WARN_ONCE ; |
1743 | } |
d3a7d8c7 |
1744 | else { |
1745 | if (specialWARN(PL_compiling.cop_warnings)) |
1746 | PL_compiling.cop_warnings = newSVsv(sv) ; |
1747 | else |
1748 | sv_setsv(PL_compiling.cop_warnings, sv); |
1749 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) |
1750 | PL_dowarn |= G_WARN_ONCE ; |
1751 | } |
f4fc7782 |
1752 | |
d3a7d8c7 |
1753 | } |
4438c4b7 |
1754 | } |
971a9dd3 |
1755 | } |
46487f74 |
1756 | else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS")) |
1757 | PL_widesyscalls = SvTRUE(sv); |
79072805 |
1758 | break; |
1759 | case '.': |
3280af22 |
1760 | if (PL_localizing) { |
1761 | if (PL_localizing == 1) |
7766f137 |
1762 | SAVESPTR(PL_last_in_gv); |
748a9306 |
1763 | } |
3280af22 |
1764 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
1765 | IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv); |
79072805 |
1766 | break; |
1767 | case '^': |
3280af22 |
1768 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d |
1769 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 |
1770 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1771 | break; |
1772 | case '~': |
3280af22 |
1773 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d |
1774 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 |
1775 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1776 | break; |
1777 | case '=': |
3280af22 |
1778 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1779 | break; |
1780 | case '-': |
3280af22 |
1781 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1782 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
1783 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; |
79072805 |
1784 | break; |
1785 | case '%': |
3280af22 |
1786 | IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1787 | break; |
1788 | case '|': |
4b65379b |
1789 | { |
3280af22 |
1790 | IO *io = GvIOp(PL_defoutgv); |
4b65379b |
1791 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
1792 | IoFLAGS(io) &= ~IOf_FLUSH; |
1793 | else { |
1794 | if (!(IoFLAGS(io) & IOf_FLUSH)) { |
1795 | PerlIO *ofp = IoOFP(io); |
1796 | if (ofp) |
1797 | (void)PerlIO_flush(ofp); |
1798 | IoFLAGS(io) |= IOf_FLUSH; |
1799 | } |
1800 | } |
79072805 |
1801 | } |
1802 | break; |
1803 | case '*': |
463ee0b2 |
1804 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
3280af22 |
1805 | PL_multiline = (i != 0); |
79072805 |
1806 | break; |
1807 | case '/': |
3280af22 |
1808 | SvREFCNT_dec(PL_nrs); |
1809 | PL_nrs = newSVsv(sv); |
1810 | SvREFCNT_dec(PL_rs); |
1811 | PL_rs = SvREFCNT_inc(PL_nrs); |
79072805 |
1812 | break; |
1813 | case '\\': |
7889fe52 |
1814 | if (PL_ors_sv) |
1815 | SvREFCNT_dec(PL_ors_sv); |
009c130f |
1816 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 |
1817 | PL_ors_sv = newSVsv(sv); |
009c130f |
1818 | } |
e3c19b7b |
1819 | else { |
7889fe52 |
1820 | PL_ors_sv = Nullsv; |
e3c19b7b |
1821 | } |
79072805 |
1822 | break; |
1823 | case ',': |
7889fe52 |
1824 | if (PL_ofs_sv) |
1825 | SvREFCNT_dec(PL_ofs_sv); |
1826 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
1827 | PL_ofs_sv = newSVsv(sv); |
1828 | } |
1829 | else { |
1830 | PL_ofs_sv = Nullsv; |
1831 | } |
79072805 |
1832 | break; |
1833 | case '#': |
3280af22 |
1834 | if (PL_ofmt) |
1835 | Safefree(PL_ofmt); |
2d8e6c8d |
1836 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 |
1837 | break; |
1838 | case '[': |
3280af22 |
1839 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1840 | break; |
1841 | case '?': |
ff0cee69 |
1842 | #ifdef COMPLEX_STATUS |
6b88bc9c |
1843 | if (PL_localizing == 2) { |
1844 | PL_statusvalue = LvTARGOFF(sv); |
1845 | PL_statusvalue_vms = LvTARGLEN(sv); |
ff0cee69 |
1846 | } |
1847 | else |
1848 | #endif |
1849 | #ifdef VMSISH_STATUS |
1850 | if (VMSISH_STATUS) |
1851 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); |
1852 | else |
1853 | #endif |
1854 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1855 | break; |
1856 | case '!': |
78987ded |
1857 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
f86702cc |
1858 | (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); |
79072805 |
1859 | break; |
1860 | case '<': |
3280af22 |
1861 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1862 | if (PL_delaymagic) { |
1863 | PL_delaymagic |= DM_RUID; |
79072805 |
1864 | break; /* don't do magic till later */ |
1865 | } |
1866 | #ifdef HAS_SETRUID |
b28d0864 |
1867 | (void)setruid((Uid_t)PL_uid); |
79072805 |
1868 | #else |
1869 | #ifdef HAS_SETREUID |
3280af22 |
1870 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 |
1871 | #else |
85e6fe83 |
1872 | #ifdef HAS_SETRESUID |
b28d0864 |
1873 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
1874 | #else |
b28d0864 |
1875 | if (PL_uid == PL_euid) /* special case $< = $> */ |
1876 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e |
1877 | else { |
d8eceb89 |
1878 | PL_uid = PerlProc_getuid(); |
cea2e8a9 |
1879 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e |
1880 | } |
79072805 |
1881 | #endif |
1882 | #endif |
85e6fe83 |
1883 | #endif |
d8eceb89 |
1884 | PL_uid = PerlProc_getuid(); |
3280af22 |
1885 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1886 | break; |
1887 | case '>': |
3280af22 |
1888 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1889 | if (PL_delaymagic) { |
1890 | PL_delaymagic |= DM_EUID; |
79072805 |
1891 | break; /* don't do magic till later */ |
1892 | } |
1893 | #ifdef HAS_SETEUID |
3280af22 |
1894 | (void)seteuid((Uid_t)PL_euid); |
79072805 |
1895 | #else |
1896 | #ifdef HAS_SETREUID |
b28d0864 |
1897 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 |
1898 | #else |
1899 | #ifdef HAS_SETRESUID |
6b88bc9c |
1900 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 |
1901 | #else |
b28d0864 |
1902 | if (PL_euid == PL_uid) /* special case $> = $< */ |
1903 | PerlProc_setuid(PL_euid); |
a0d0e21e |
1904 | else { |
e8ee3774 |
1905 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 |
1906 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e |
1907 | } |
79072805 |
1908 | #endif |
1909 | #endif |
85e6fe83 |
1910 | #endif |
d8eceb89 |
1911 | PL_euid = PerlProc_geteuid(); |
3280af22 |
1912 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1913 | break; |
1914 | case '(': |
3280af22 |
1915 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1916 | if (PL_delaymagic) { |
1917 | PL_delaymagic |= DM_RGID; |
79072805 |
1918 | break; /* don't do magic till later */ |
1919 | } |
1920 | #ifdef HAS_SETRGID |
b28d0864 |
1921 | (void)setrgid((Gid_t)PL_gid); |
79072805 |
1922 | #else |
1923 | #ifdef HAS_SETREGID |
3280af22 |
1924 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 |
1925 | #else |
1926 | #ifdef HAS_SETRESGID |
b28d0864 |
1927 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
1928 | #else |
b28d0864 |
1929 | if (PL_gid == PL_egid) /* special case $( = $) */ |
1930 | (void)PerlProc_setgid(PL_gid); |
748a9306 |
1931 | else { |
d8eceb89 |
1932 | PL_gid = PerlProc_getgid(); |
cea2e8a9 |
1933 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 |
1934 | } |
79072805 |
1935 | #endif |
1936 | #endif |
85e6fe83 |
1937 | #endif |
d8eceb89 |
1938 | PL_gid = PerlProc_getgid(); |
3280af22 |
1939 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1940 | break; |
1941 | case ')': |
5cd24f17 |
1942 | #ifdef HAS_SETGROUPS |
1943 | { |
2d8e6c8d |
1944 | char *p = SvPV(sv, len); |
5cd24f17 |
1945 | Groups_t gary[NGROUPS]; |
1946 | |
5cd24f17 |
1947 | while (isSPACE(*p)) |
1948 | ++p; |
2d4389e4 |
1949 | PL_egid = Atol(p); |
5cd24f17 |
1950 | for (i = 0; i < NGROUPS; ++i) { |
1951 | while (*p && !isSPACE(*p)) |
1952 | ++p; |
1953 | while (isSPACE(*p)) |
1954 | ++p; |
1955 | if (!*p) |
1956 | break; |
2d4389e4 |
1957 | gary[i] = Atol(p); |
5cd24f17 |
1958 | } |
8cc95fdb |
1959 | if (i) |
1960 | (void)setgroups(i, gary); |
5cd24f17 |
1961 | } |
1962 | #else /* HAS_SETGROUPS */ |
b28d0864 |
1963 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 |
1964 | #endif /* HAS_SETGROUPS */ |
3280af22 |
1965 | if (PL_delaymagic) { |
1966 | PL_delaymagic |= DM_EGID; |
79072805 |
1967 | break; /* don't do magic till later */ |
1968 | } |
1969 | #ifdef HAS_SETEGID |
3280af22 |
1970 | (void)setegid((Gid_t)PL_egid); |
79072805 |
1971 | #else |
1972 | #ifdef HAS_SETREGID |
b28d0864 |
1973 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 |
1974 | #else |
1975 | #ifdef HAS_SETRESGID |
b28d0864 |
1976 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 |
1977 | #else |
b28d0864 |
1978 | if (PL_egid == PL_gid) /* special case $) = $( */ |
1979 | (void)PerlProc_setgid(PL_egid); |
748a9306 |
1980 | else { |
d8eceb89 |
1981 | PL_egid = PerlProc_getegid(); |
cea2e8a9 |
1982 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 |
1983 | } |
79072805 |
1984 | #endif |
1985 | #endif |
85e6fe83 |
1986 | #endif |
d8eceb89 |
1987 | PL_egid = PerlProc_getegid(); |
3280af22 |
1988 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 |
1989 | break; |
1990 | case ':': |
2d8e6c8d |
1991 | PL_chopset = SvPV_force(sv,len); |
79072805 |
1992 | break; |
cd39f2b6 |
1993 | #ifndef MACOS_TRADITIONAL |
79072805 |
1994 | case '0': |
4bc88a62 |
1995 | #ifdef HAS_SETPROCTITLE |
1996 | /* The BSDs don't show the argv[] in ps(1) output, they |
1997 | * show a string from the process struct and provide |
1998 | * the setproctitle() routine to manipulate that. */ |
1999 | { |
2000 | s = SvPV(sv, len); |
9aad2c0e |
2001 | # if __FreeBSD_version >= 410001 |
2002 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 |
2003 | * but not the "(perl) suffix from the ps(1) |
2004 | * output, because that's what ps(1) shows if the |
2005 | * argv[] is modified. */ |
2006 | setproctitle("-%s", s, len + 1); |
9aad2c0e |
2007 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 |
2008 | /* This doesn't really work if you assume that |
2009 | * $0 = 'foobar'; will wipe out 'perl' from the $0 |
2010 | * because in ps(1) output the result will be like |
2011 | * sprintf("perl: %s (perl)", s) |
2012 | * I guess this is a security feature: |
2013 | * one (a user process) cannot get rid of the original name. |
2014 | * --jhi */ |
2015 | setproctitle("%s", s); |
2016 | # endif |
2017 | } |
2018 | #endif |
3280af22 |
2019 | if (!PL_origalen) { |
2020 | s = PL_origargv[0]; |
79072805 |
2021 | s += strlen(s); |
2022 | /* See if all the arguments are contiguous in memory */ |
3280af22 |
2023 | for (i = 1; i < PL_origargc; i++) { |
2024 | if (PL_origargv[i] == s + 1 |
fb73857a |
2025 | #ifdef OS2 |
6b88bc9c |
2026 | || PL_origargv[i] == s + 2 |
ac27b0f5 |
2027 | #endif |
fb73857a |
2028 | ) |
379c4362 |
2029 | { |
2030 | ++s; |
2031 | s += strlen(s); /* this one is ok too */ |
2032 | } |
fb73857a |
2033 | else |
2034 | break; |
79072805 |
2035 | } |
bbce6d69 |
2036 | /* can grab env area too? */ |
3280af22 |
2037 | if (PL_origenviron && (PL_origenviron[0] == s + 1 |
fb73857a |
2038 | #ifdef OS2 |
6b88bc9c |
2039 | || (PL_origenviron[0] == s + 9 && (s += 8)) |
ac27b0f5 |
2040 | #endif |
fb73857a |
2041 | )) { |
66b1d557 |
2042 | my_setenv("NoNe SuCh", Nullch); |
79072805 |
2043 | /* force copy of environment */ |
3280af22 |
2044 | for (i = 0; PL_origenviron[i]; i++) |
379c4362 |
2045 | if (PL_origenviron[i] == s + 1) { |
2046 | ++s; |
2047 | s += strlen(s); |
2048 | } |
fb73857a |
2049 | else |
2050 | break; |
79072805 |
2051 | } |
3280af22 |
2052 | PL_origalen = s - PL_origargv[0]; |
79072805 |
2053 | } |
a0d0e21e |
2054 | s = SvPV_force(sv,len); |
8990e307 |
2055 | i = len; |
3280af22 |
2056 | if (i >= PL_origalen) { |
2057 | i = PL_origalen; |
fb73857a |
2058 | /* don't allow system to limit $0 seen by script */ |
2059 | /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ |
3280af22 |
2060 | Copy(s, PL_origargv[0], i, char); |
2061 | s = PL_origargv[0]+i; |
fb73857a |
2062 | *s = '\0'; |
79072805 |
2063 | } |
2064 | else { |
3280af22 |
2065 | Copy(s, PL_origargv[0], i, char); |
2066 | s = PL_origargv[0]+i; |
79072805 |
2067 | *s++ = '\0'; |
3280af22 |
2068 | while (++i < PL_origalen) |
8990e307 |
2069 | *s++ = ' '; |
3280af22 |
2070 | s = PL_origargv[0]+i; |
2071 | for (i = 1; i < PL_origargc; i++) |
2072 | PL_origargv[i] = Nullch; |
79072805 |
2073 | } |
2074 | break; |
cd39f2b6 |
2075 | #endif |
a863c7d1 |
2076 | #ifdef USE_THREADS |
2077 | case '@': |
38a03e6e |
2078 | sv_setsv(thr->errsv, sv); |
a863c7d1 |
2079 | break; |
2080 | #endif /* USE_THREADS */ |
79072805 |
2081 | } |
2082 | return 0; |
2083 | } |
2084 | |
f93b4edd |
2085 | #ifdef USE_THREADS |
2086 | int |
864dbfa3 |
2087 | Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg) |
f93b4edd |
2088 | { |
b900a521 |
2089 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
2090 | "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n", |
2091 | PTR2UV(thr), PTR2UV(sv));) |
f93b4edd |
2092 | if (MgOWNER(mg)) |
cea2e8a9 |
2093 | Perl_croak(aTHX_ "panic: magic_mutexfree"); |
f93b4edd |
2094 | MUTEX_DESTROY(MgMUTEXP(mg)); |
2095 | COND_DESTROY(MgCONDP(mg)); |
2096 | return 0; |
2097 | } |
2098 | #endif /* USE_THREADS */ |
2099 | |
79072805 |
2100 | I32 |
864dbfa3 |
2101 | Perl_whichsig(pTHX_ char *sig) |
79072805 |
2102 | { |
2103 | register char **sigv; |
2104 | |
22c35a8c |
2105 | for (sigv = PL_sig_name+1; *sigv; sigv++) |
79072805 |
2106 | if (strEQ(sig,*sigv)) |
22c35a8c |
2107 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 |
2108 | #ifdef SIGCLD |
2109 | if (strEQ(sig,"CHLD")) |
2110 | return SIGCLD; |
2111 | #endif |
2112 | #ifdef SIGCHLD |
2113 | if (strEQ(sig,"CLD")) |
2114 | return SIGCHLD; |
2115 | #endif |
2116 | return 0; |
2117 | } |
2118 | |
84902520 |
2119 | static SV* sig_sv; |
2120 | |
ecfc5424 |
2121 | Signal_t |
cea2e8a9 |
2122 | Perl_sighandler(int sig) |
79072805 |
2123 | { |
71d280e3 |
2124 | #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT) |
2125 | dTHXoa(PL_curinterp); /* fake TLS, because signals don't do TLS */ |
2126 | #else |
cea2e8a9 |
2127 | dTHX; |
71d280e3 |
2128 | #endif |
79072805 |
2129 | dSP; |
00d579c5 |
2130 | GV *gv = Nullgv; |
a0d0e21e |
2131 | HV *st; |
3280af22 |
2132 | SV *sv, *tSv = PL_Sv; |
00d579c5 |
2133 | CV *cv = Nullcv; |
533c011a |
2134 | OP *myop = PL_op; |
84902520 |
2135 | U32 flags = 0; |
155aba94 |
2136 | I32 o_save_i = PL_savestack_ix; |
3280af22 |
2137 | XPV *tXpv = PL_Xpv; |
71d280e3 |
2138 | |
2139 | #if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT) |
2140 | PERL_SET_THX(aTHXo); /* fake TLS, see above */ |
2141 | #endif |
ac27b0f5 |
2142 | |
3280af22 |
2143 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 |
2144 | flags |= 1; |
3280af22 |
2145 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 |
2146 | flags |= 4; |
3280af22 |
2147 | if (PL_retstack_ix < PL_retstack_max - 2) |
84902520 |
2148 | flags |= 8; |
3280af22 |
2149 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 |
2150 | flags |= 16; |
2151 | |
22c35a8c |
2152 | if (!PL_psig_ptr[sig]) |
cea2e8a9 |
2153 | Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n", |
22c35a8c |
2154 | PL_sig_name[sig]); |
ff0cee69 |
2155 | |
84902520 |
2156 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2157 | infinity, so we fix 4 (in fact 5): */ |
2158 | if (flags & 1) { |
3280af22 |
2159 | PL_savestack_ix += 5; /* Protect save in progress. */ |
2160 | o_save_i = PL_savestack_ix; |
c76ac1ee |
2161 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 |
2162 | } |
ac27b0f5 |
2163 | if (flags & 4) |
3280af22 |
2164 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 |
2165 | if (flags & 8) { |
3280af22 |
2166 | PL_retstack_ix++; |
2167 | PL_retstack[PL_retstack_ix] = NULL; |
84902520 |
2168 | } |
2169 | if (flags & 16) |
3280af22 |
2170 | PL_scopestack_ix += 1; |
84902520 |
2171 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 |
2172 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 |
2173 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c |
2174 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 |
2175 | |
a0d0e21e |
2176 | if (!cv || !CvROOT(cv)) { |
599cee73 |
2177 | if (ckWARN(WARN_SIGNAL)) |
cea2e8a9 |
2178 | Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n", |
22c35a8c |
2179 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 |
2180 | : ((cv && CvGV(cv)) |
2181 | ? GvENAME(CvGV(cv)) |
2182 | : "__ANON__"))); |
2183 | goto cleanup; |
79072805 |
2184 | } |
2185 | |
22c35a8c |
2186 | if(PL_psig_name[sig]) { |
2187 | sv = SvREFCNT_inc(PL_psig_name[sig]); |
84902520 |
2188 | flags |= 64; |
2189 | sig_sv = sv; |
2190 | } else { |
ff0cee69 |
2191 | sv = sv_newmortal(); |
22c35a8c |
2192 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a |
2193 | } |
e336de0d |
2194 | |
e788e7d3 |
2195 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 |
2196 | PUSHMARK(SP); |
79072805 |
2197 | PUSHs(sv); |
79072805 |
2198 | PUTBACK; |
a0d0e21e |
2199 | |
864dbfa3 |
2200 | call_sv((SV*)cv, G_DISCARD); |
79072805 |
2201 | |
d3acc0f7 |
2202 | POPSTACK; |
00d579c5 |
2203 | cleanup: |
84902520 |
2204 | if (flags & 1) |
3280af22 |
2205 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 |
2206 | if (flags & 4) |
3280af22 |
2207 | PL_markstack_ptr--; |
ac27b0f5 |
2208 | if (flags & 8) |
3280af22 |
2209 | PL_retstack_ix--; |
84902520 |
2210 | if (flags & 16) |
3280af22 |
2211 | PL_scopestack_ix -= 1; |
84902520 |
2212 | if (flags & 64) |
2213 | SvREFCNT_dec(sv); |
533c011a |
2214 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 |
2215 | |
3280af22 |
2216 | PL_Sv = tSv; /* Restore global temporaries. */ |
2217 | PL_Xpv = tXpv; |
79072805 |
2218 | return; |
2219 | } |
4e35701f |
2220 | |
2221 | |
51371543 |
2222 | #ifdef PERL_OBJECT |
51371543 |
2223 | #include "XSUB.h" |
2224 | #endif |
2225 | |
2226 | static void |
2227 | restore_magic(pTHXo_ void *p) |
2228 | { |
48944bdf |
2229 | MGS* mgs = SSPTR(PTR2IV(p), MGS*); |
51371543 |
2230 | SV* sv = mgs->mgs_sv; |
2231 | |
2232 | if (!sv) |
2233 | return; |
2234 | |
2235 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
2236 | { |
2237 | if (mgs->mgs_flags) |
2238 | SvFLAGS(sv) |= mgs->mgs_flags; |
2239 | else |
2240 | mg_magical(sv); |
2241 | if (SvGMAGICAL(sv)) |
2242 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
2243 | } |
2244 | |
2245 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ |
2246 | |
2247 | /* If we're still on top of the stack, pop us off. (That condition |
2248 | * will be satisfied if restore_magic was called explicitly, but *not* |
2249 | * if it's being called via leave_scope.) |
2250 | * The reason for doing this is that otherwise, things like sv_2cv() |
2251 | * may leave alloc gunk on the savestack, and some code |
2252 | * (e.g. sighandler) doesn't expect that... |
2253 | */ |
2254 | if (PL_savestack_ix == mgs->mgs_ss_ix) |
2255 | { |
2256 | I32 popval = SSPOPINT; |
c76ac1ee |
2257 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 |
2258 | PL_savestack_ix -= 2; |
2259 | popval = SSPOPINT; |
2260 | assert(popval == SAVEt_ALLOC); |
2261 | popval = SSPOPINT; |
2262 | PL_savestack_ix -= popval; |
2263 | } |
2264 | |
2265 | } |
2266 | |
2267 | static void |
2268 | unwind_handler_stack(pTHXo_ void *p) |
2269 | { |
51371543 |
2270 | U32 flags = *(U32*)p; |
2271 | |
2272 | if (flags & 1) |
2273 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ |
2274 | /* cxstack_ix-- Not needed, die already unwound it. */ |
2275 | if (flags & 64) |
2276 | SvREFCNT_dec(sig_sv); |
2277 | } |