Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never | |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent." | |
79072805 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Magical Functions | |
18 | */ | |
19 | ||
79072805 | 20 | #include "EXTERN.h" |
864dbfa3 | 21 | #define PERL_IN_MG_C |
79072805 LW |
22 | #include "perl.h" |
23 | ||
5cd24f17 | 24 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 CS |
25 | # ifndef NGROUPS |
26 | # define NGROUPS 32 | |
27 | # endif | |
b7953727 JH |
28 | # ifdef I_GRP |
29 | # include <grp.h> | |
30 | # endif | |
188ea221 CS |
31 | #endif |
32 | ||
17aa7f3d JH |
33 | #ifdef __hpux |
34 | # include <sys/pstat.h> | |
35 | #endif | |
36 | ||
e69880a5 CB |
37 | Signal_t Perl_csighandler(int sig); |
38 | ||
23ada85b | 39 | /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */ |
85b332e2 | 40 | #if !defined(HAS_SIGACTION) && defined(VMS) |
23ada85b | 41 | # define FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 | 42 | #endif |
2e34cc90 | 43 | /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */ |
7719e241 | 44 | #if defined(KILL_BY_SIGPRC) |
2e34cc90 CL |
45 | # define FAKE_DEFAULT_SIGNAL_HANDLERS |
46 | #endif | |
85b332e2 | 47 | |
acfe0abc GS |
48 | static void restore_magic(pTHX_ void *p); |
49 | static void unwind_handler_stack(pTHX_ void *p); | |
51371543 | 50 | |
9cffb111 OS |
51 | #ifdef __Lynx__ |
52 | /* Missing protos on LynxOS */ | |
53 | void setruid(uid_t id); | |
54 | void seteuid(uid_t id); | |
55 | void setrgid(uid_t id); | |
56 | void setegid(uid_t id); | |
57 | #endif | |
58 | ||
c07a80fd | 59 | /* |
60 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
61 | */ | |
62 | ||
63 | struct magic_state { | |
64 | SV* mgs_sv; | |
65 | U32 mgs_flags; | |
455ece5e | 66 | I32 mgs_ss_ix; |
c07a80fd | 67 | }; |
455ece5e | 68 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
69 | |
70 | STATIC void | |
8fb26106 | 71 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 72 | { |
455ece5e | 73 | MGS* mgs; |
c07a80fd | 74 | assert(SvMAGICAL(sv)); |
765f542d NC |
75 | #ifdef PERL_COPY_ON_WRITE |
76 | /* Turning READONLY off for a copy-on-write scalar is a bad idea. */ | |
77 | if (SvIsCOW(sv)) | |
78 | sv_force_normal(sv); | |
79 | #endif | |
c07a80fd | 80 | |
685f876f | 81 | SAVEDESTRUCTOR_X(restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
82 | |
83 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 84 | mgs->mgs_sv = sv; |
85 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 86 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 87 | |
88 | SvMAGICAL_off(sv); | |
89 | SvREADONLY_off(sv); | |
06759ea0 | 90 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd | 91 | } |
92 | ||
954c1994 GS |
93 | /* |
94 | =for apidoc mg_magical | |
95 | ||
96 | Turns on the magical status of an SV. See C<sv_magic>. | |
97 | ||
98 | =cut | |
99 | */ | |
100 | ||
8990e307 | 101 | void |
864dbfa3 | 102 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 LW |
103 | { |
104 | MAGIC* mg; | |
105 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
106 | MGVTBL* vtbl = mg->mg_virtual; | |
107 | if (vtbl) { | |
2b260de0 | 108 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
109 | SvGMAGICAL_on(sv); |
110 | if (vtbl->svt_set) | |
111 | SvSMAGICAL_on(sv); | |
2b260de0 | 112 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
113 | SvRMAGICAL_on(sv); |
114 | } | |
115 | } | |
116 | } | |
117 | ||
954c1994 GS |
118 | /* |
119 | =for apidoc mg_get | |
120 | ||
121 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
122 | ||
123 | =cut | |
124 | */ | |
125 | ||
79072805 | 126 | int |
864dbfa3 | 127 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 128 | { |
ff76feab AMS |
129 | int new = 0; |
130 | MAGIC *newmg, *head, *cur, *mg; | |
131 | I32 mgs_ix = SSNEW(sizeof(MGS)); | |
6683b158 | 132 | int was_temp = SvTEMP(sv); |
20135930 | 133 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
134 | reference. */ |
135 | ||
136 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can | |
137 | cause the SV's buffer to get stolen (and maybe other stuff). | |
138 | So restore it. | |
139 | */ | |
140 | sv_2mortal(SvREFCNT_inc(sv)); | |
141 | if (!was_temp) { | |
142 | SvTEMP_off(sv); | |
143 | } | |
144 | ||
455ece5e | 145 | save_magic(mgs_ix, sv); |
463ee0b2 | 146 | |
ff76feab AMS |
147 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
148 | list of magic. svt_get() may delete the current entry, add new | |
149 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
150 | ||
151 | newmg = cur = head = mg = SvMAGIC(sv); | |
152 | while (mg) { | |
153 | MGVTBL *vtbl = mg->mg_virtual; | |
154 | ||
2b260de0 | 155 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 156 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 157 | |
58f82c5c DM |
158 | /* guard against magic having been deleted - eg FETCH calling |
159 | * untie */ | |
160 | if (!SvMAGIC(sv)) | |
161 | break; | |
b77f7d40 | 162 | |
ff76feab AMS |
163 | /* Don't restore the flags for this entry if it was deleted. */ |
164 | if (mg->mg_flags & MGf_GSKIP) | |
165 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 166 | } |
ff76feab AMS |
167 | |
168 | mg = mg->mg_moremagic; | |
169 | ||
170 | if (new) { | |
171 | /* Have we finished with the new entries we saw? Start again | |
172 | where we left off (unless there are more new entries). */ | |
173 | if (mg == head) { | |
174 | new = 0; | |
175 | mg = cur; | |
176 | head = newmg; | |
177 | } | |
178 | } | |
179 | ||
180 | /* Were any new entries added? */ | |
181 | if (!new && (newmg = SvMAGIC(sv)) != head) { | |
182 | new = 1; | |
183 | cur = mg; | |
184 | mg = newmg; | |
760ac839 | 185 | } |
79072805 | 186 | } |
463ee0b2 | 187 | |
acfe0abc | 188 | restore_magic(aTHX_ INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
189 | |
190 | if (SvREFCNT(sv) == 1) { | |
191 | /* We hold the last reference to this SV, which implies that the | |
192 | SV was deleted as a side effect of the routines we called. */ | |
193 | SvOK_off(sv); | |
194 | } | |
79072805 LW |
195 | return 0; |
196 | } | |
197 | ||
954c1994 GS |
198 | /* |
199 | =for apidoc mg_set | |
200 | ||
201 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
202 | ||
203 | =cut | |
204 | */ | |
205 | ||
79072805 | 206 | int |
864dbfa3 | 207 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 208 | { |
8fb26106 | 209 | I32 mgs_ix; |
79072805 | 210 | MAGIC* mg; |
463ee0b2 LW |
211 | MAGIC* nextmg; |
212 | ||
455ece5e AD |
213 | mgs_ix = SSNEW(sizeof(MGS)); |
214 | save_magic(mgs_ix, sv); | |
463ee0b2 LW |
215 | |
216 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 217 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 218 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
219 | if (mg->mg_flags & MGf_GSKIP) { |
220 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 221 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 222 | } |
2b260de0 | 223 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 224 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 225 | } |
463ee0b2 | 226 | |
acfe0abc | 227 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
228 | return 0; |
229 | } | |
230 | ||
954c1994 GS |
231 | /* |
232 | =for apidoc mg_length | |
233 | ||
234 | Report on the SV's length. See C<sv_magic>. | |
235 | ||
236 | =cut | |
237 | */ | |
238 | ||
79072805 | 239 | U32 |
864dbfa3 | 240 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
241 | { |
242 | MAGIC* mg; | |
463ee0b2 | 243 | STRLEN len; |
463ee0b2 | 244 | |
79072805 LW |
245 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
246 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 247 | if (vtbl && vtbl->svt_len) { |
8fb26106 | 248 | I32 mgs_ix; |
48e43a1c | 249 | |
455ece5e AD |
250 | mgs_ix = SSNEW(sizeof(MGS)); |
251 | save_magic(mgs_ix, sv); | |
a0d0e21e | 252 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 253 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 254 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
255 | return len; |
256 | } | |
257 | } | |
258 | ||
7719e241 | 259 | if (DO_UTF8(sv)) |
5636d518 DB |
260 | { |
261 | U8 *s = (U8*)SvPV(sv, len); | |
262 | len = Perl_utf8_length(aTHX_ s, s + len); | |
263 | } | |
264 | else | |
265 | (void)SvPV(sv, len); | |
463ee0b2 | 266 | return len; |
79072805 LW |
267 | } |
268 | ||
8fb26106 | 269 | I32 |
864dbfa3 | 270 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
271 | { |
272 | MAGIC* mg; | |
273 | I32 len; | |
ac27b0f5 | 274 | |
93965878 NIS |
275 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
276 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 277 | if (vtbl && vtbl->svt_len) { |
8fb26106 | 278 | I32 mgs_ix; |
455ece5e AD |
279 | |
280 | mgs_ix = SSNEW(sizeof(MGS)); | |
281 | save_magic(mgs_ix, sv); | |
93965878 | 282 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 283 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 284 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
285 | return len; |
286 | } | |
287 | } | |
288 | ||
289 | switch(SvTYPE(sv)) { | |
290 | case SVt_PVAV: | |
291 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ | |
292 | return len; | |
293 | case SVt_PVHV: | |
294 | /* FIXME */ | |
295 | default: | |
cea2e8a9 | 296 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
297 | break; |
298 | } | |
299 | return 0; | |
300 | } | |
301 | ||
954c1994 GS |
302 | /* |
303 | =for apidoc mg_clear | |
304 | ||
305 | Clear something magical that the SV represents. See C<sv_magic>. | |
306 | ||
307 | =cut | |
308 | */ | |
309 | ||
79072805 | 310 | int |
864dbfa3 | 311 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 312 | { |
8fb26106 | 313 | I32 mgs_ix; |
79072805 | 314 | MAGIC* mg; |
463ee0b2 | 315 | |
455ece5e AD |
316 | mgs_ix = SSNEW(sizeof(MGS)); |
317 | save_magic(mgs_ix, sv); | |
463ee0b2 | 318 | |
79072805 LW |
319 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
320 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e | 321 | /* omit GSKIP -- never set here */ |
727405f8 | 322 | |
2b260de0 | 323 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 324 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 325 | } |
463ee0b2 | 326 | |
acfe0abc | 327 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
328 | return 0; |
329 | } | |
330 | ||
954c1994 GS |
331 | /* |
332 | =for apidoc mg_find | |
333 | ||
334 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
335 | ||
336 | =cut | |
337 | */ | |
338 | ||
93a17b20 | 339 | MAGIC* |
864dbfa3 | 340 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 LW |
341 | { |
342 | MAGIC* mg; | |
3f8f4626 DC |
343 | if (!sv) |
344 | return 0; | |
93a17b20 LW |
345 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
346 | if (mg->mg_type == type) | |
347 | return mg; | |
348 | } | |
349 | return 0; | |
350 | } | |
351 | ||
954c1994 GS |
352 | /* |
353 | =for apidoc mg_copy | |
354 | ||
355 | Copies the magic from one SV to another. See C<sv_magic>. | |
356 | ||
357 | =cut | |
358 | */ | |
359 | ||
79072805 | 360 | int |
864dbfa3 | 361 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 362 | { |
463ee0b2 | 363 | int count = 0; |
79072805 | 364 | MAGIC* mg; |
463ee0b2 | 365 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
68795e93 NIS |
366 | MGVTBL* vtbl = mg->mg_virtual; |
367 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ | |
368 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
369 | } | |
370 | else if (isUPPER(mg->mg_type)) { | |
33c27489 | 371 | sv_magic(nsv, |
14befaf4 DM |
372 | mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) : |
373 | (mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj) | |
374 | ? sv : mg->mg_obj, | |
33c27489 | 375 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 376 | count++; |
79072805 | 377 | } |
79072805 | 378 | } |
463ee0b2 | 379 | return count; |
79072805 LW |
380 | } |
381 | ||
954c1994 GS |
382 | /* |
383 | =for apidoc mg_free | |
384 | ||
385 | Free any magic storage used by the SV. See C<sv_magic>. | |
386 | ||
387 | =cut | |
388 | */ | |
389 | ||
79072805 | 390 | int |
864dbfa3 | 391 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
392 | { |
393 | MAGIC* mg; | |
394 | MAGIC* moremagic; | |
395 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
396 | MGVTBL* vtbl = mg->mg_virtual; | |
397 | moremagic = mg->mg_moremagic; | |
2b260de0 | 398 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 399 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 400 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 401 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 402 | Safefree(mg->mg_ptr); |
565764a8 | 403 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 404 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 405 | } |
b881518d JH |
406 | if (mg->mg_flags & MGf_REFCOUNTED) |
407 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
408 | Safefree(mg); |
409 | } | |
410 | SvMAGIC(sv) = 0; | |
411 | return 0; | |
412 | } | |
413 | ||
79072805 | 414 | #include <signal.h> |
79072805 | 415 | |
942e002e | 416 | U32 |
864dbfa3 | 417 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 418 | { |
6cef1e77 | 419 | register REGEXP *rx; |
6cef1e77 | 420 | |
aaa362c4 | 421 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
8f580fb8 IZ |
422 | if (mg->mg_obj) /* @+ */ |
423 | return rx->nparens; | |
424 | else /* @- */ | |
425 | return rx->lastparen; | |
426 | } | |
ac27b0f5 | 427 | |
942e002e | 428 | return (U32)-1; |
6cef1e77 IZ |
429 | } |
430 | ||
431 | int | |
864dbfa3 | 432 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 433 | { |
6cef1e77 | 434 | register I32 paren; |
cf93c79d | 435 | register I32 s; |
6cef1e77 IZ |
436 | register I32 i; |
437 | register REGEXP *rx; | |
cf93c79d | 438 | I32 t; |
6cef1e77 | 439 | |
aaa362c4 | 440 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
6cef1e77 IZ |
441 | paren = mg->mg_len; |
442 | if (paren < 0) | |
443 | return 0; | |
eb160463 | 444 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
445 | (s = rx->startp[paren]) != -1 && |
446 | (t = rx->endp[paren]) != -1) | |
6cef1e77 IZ |
447 | { |
448 | if (mg->mg_obj) /* @+ */ | |
cf93c79d | 449 | i = t; |
6cef1e77 | 450 | else /* @- */ |
cf93c79d | 451 | i = s; |
727405f8 | 452 | |
a30b2f1f | 453 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
1aa99e6b | 454 | char *b = rx->subbeg; |
0064a8a9 JH |
455 | if (b) |
456 | i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i)); | |
1aa99e6b | 457 | } |
0064a8a9 JH |
458 | |
459 | sv_setiv(sv, i); | |
6cef1e77 IZ |
460 | } |
461 | } | |
462 | return 0; | |
463 | } | |
464 | ||
e4b89193 | 465 | int |
a29d06ed MG |
466 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
467 | { | |
a29d06ed | 468 | Perl_croak(aTHX_ PL_no_modify); |
e4b89193 GS |
469 | /* NOT REACHED */ |
470 | return 0; | |
a29d06ed MG |
471 | } |
472 | ||
93a17b20 | 473 | U32 |
864dbfa3 | 474 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 LW |
475 | { |
476 | register I32 paren; | |
93a17b20 | 477 | register I32 i; |
d9f97599 | 478 | register REGEXP *rx; |
a197cbdd | 479 | I32 s1, t1; |
93a17b20 LW |
480 | |
481 | switch (*mg->mg_ptr) { | |
482 | case '1': case '2': case '3': case '4': | |
483 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 484 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 485 | |
ffc61ed2 | 486 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 487 | getparen: |
eb160463 | 488 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
489 | (s1 = rx->startp[paren]) != -1 && |
490 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 491 | { |
cf93c79d | 492 | i = t1 - s1; |
a197cbdd | 493 | getlen: |
a30b2f1f | 494 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
ffc61ed2 | 495 | char *s = rx->subbeg + s1; |
a197cbdd | 496 | char *send = rx->subbeg + t1; |
ffc61ed2 | 497 | |
6d5fa195 | 498 | i = t1 - s1; |
60425c38 JH |
499 | if (is_utf8_string((U8*)s, i)) |
500 | i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send); | |
a197cbdd | 501 | } |
ffc61ed2 | 502 | if (i < 0) |
0844c848 | 503 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 504 | return i; |
93a17b20 | 505 | } |
235bddc8 NIS |
506 | else { |
507 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 508 | report_uninit(sv); |
235bddc8 NIS |
509 | } |
510 | } | |
511 | else { | |
512 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 513 | report_uninit(sv); |
93a17b20 | 514 | } |
748a9306 | 515 | return 0; |
93a17b20 | 516 | case '+': |
aaa362c4 | 517 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 518 | paren = rx->lastparen; |
13f57bf8 CS |
519 | if (paren) |
520 | goto getparen; | |
93a17b20 | 521 | } |
748a9306 | 522 | return 0; |
a01268b5 JH |
523 | case '\016': /* ^N */ |
524 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
525 | paren = rx->lastcloseparen; | |
526 | if (paren) | |
527 | goto getparen; | |
528 | } | |
529 | return 0; | |
93a17b20 | 530 | case '`': |
aaa362c4 | 531 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
532 | if (rx->startp[0] != -1) { |
533 | i = rx->startp[0]; | |
a197cbdd GS |
534 | if (i > 0) { |
535 | s1 = 0; | |
536 | t1 = i; | |
537 | goto getlen; | |
538 | } | |
93a17b20 | 539 | } |
93a17b20 | 540 | } |
748a9306 | 541 | return 0; |
93a17b20 | 542 | case '\'': |
aaa362c4 | 543 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
544 | if (rx->endp[0] != -1) { |
545 | i = rx->sublen - rx->endp[0]; | |
a197cbdd GS |
546 | if (i > 0) { |
547 | s1 = rx->endp[0]; | |
548 | t1 = rx->sublen; | |
549 | goto getlen; | |
550 | } | |
93a17b20 | 551 | } |
93a17b20 | 552 | } |
748a9306 | 553 | return 0; |
93a17b20 LW |
554 | } |
555 | magic_get(sv,mg); | |
2d8e6c8d GS |
556 | if (!SvPOK(sv) && SvNIOK(sv)) { |
557 | STRLEN n_a; | |
558 | sv_2pv(sv, &n_a); | |
559 | } | |
93a17b20 LW |
560 | if (SvPOK(sv)) |
561 | return SvCUR(sv); | |
562 | return 0; | |
563 | } | |
564 | ||
79072805 | 565 | int |
864dbfa3 | 566 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
567 | { |
568 | register I32 paren; | |
35272f84 | 569 | register char *s = NULL; |
79072805 | 570 | register I32 i; |
d9f97599 | 571 | register REGEXP *rx; |
79072805 LW |
572 | |
573 | switch (*mg->mg_ptr) { | |
748a9306 | 574 | case '\001': /* ^A */ |
3280af22 | 575 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 576 | break; |
49460fe6 NIS |
577 | case '\003': /* ^C */ |
578 | sv_setiv(sv, (IV)PL_minus_c); | |
579 | break; | |
580 | ||
79072805 | 581 | case '\004': /* ^D */ |
aea4f609 | 582 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 583 | break; |
28f23441 | 584 | case '\005': /* ^E */ |
0a378802 | 585 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 586 | #ifdef MACOS_TRADITIONAL |
0a378802 JH |
587 | { |
588 | char msg[256]; | |
727405f8 | 589 | |
0a378802 | 590 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 591 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 592 | } |
727405f8 | 593 | #else |
28f23441 | 594 | #ifdef VMS |
0a378802 JH |
595 | { |
596 | # include <descrip.h> | |
597 | # include <starlet.h> | |
598 | char msg[255]; | |
599 | $DESCRIPTOR(msgdsc,msg); | |
600 | sv_setnv(sv,(NV) vaxc$errno); | |
601 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
602 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
603 | else | |
604 | sv_setpv(sv,""); | |
605 | } | |
28f23441 | 606 | #else |
88e89b8a | 607 | #ifdef OS2 |
0a378802 JH |
608 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
609 | sv_setnv(sv, (NV)errno); | |
610 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
611 | } else { | |
612 | if (errno != errno_isOS2) { | |
613 | int tmp = _syserrno(); | |
614 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
615 | Perl_rc = tmp; | |
616 | } | |
617 | sv_setnv(sv, (NV)Perl_rc); | |
618 | sv_setpv(sv, os2error(Perl_rc)); | |
619 | } | |
88e89b8a | 620 | #else |
22fae026 | 621 | #ifdef WIN32 |
0a378802 JH |
622 | { |
623 | DWORD dwErr = GetLastError(); | |
624 | sv_setnv(sv, (NV)dwErr); | |
625 | if (dwErr) | |
626 | { | |
627 | PerlProc_GetOSError(sv, dwErr); | |
628 | } | |
629 | else | |
630 | sv_setpv(sv, ""); | |
631 | SetLastError(dwErr); | |
632 | } | |
22fae026 | 633 | #else |
f6c8f21d RGS |
634 | { |
635 | int saveerrno = errno; | |
636 | sv_setnv(sv, (NV)errno); | |
637 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
638 | errno = saveerrno; | |
639 | } | |
28f23441 | 640 | #endif |
88e89b8a | 641 | #endif |
22fae026 | 642 | #endif |
cd39f2b6 | 643 | #endif |
0a378802 JH |
644 | SvNOK_on(sv); /* what a wonderful hack! */ |
645 | } | |
646 | else if (strEQ(mg->mg_ptr+1, "NCODING")) | |
647 | sv_setsv(sv, PL_encoding); | |
648 | break; | |
79072805 | 649 | case '\006': /* ^F */ |
3280af22 | 650 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 651 | break; |
a0d0e21e | 652 | case '\010': /* ^H */ |
3280af22 | 653 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 654 | break; |
9d116dd7 | 655 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
656 | if (PL_inplace) |
657 | sv_setpv(sv, PL_inplace); | |
79072805 | 658 | else |
3280af22 | 659 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 660 | break; |
ac27b0f5 | 661 | case '\017': /* ^O & ^OPEN */ |
3511154c | 662 | if (*(mg->mg_ptr+1) == '\0') { |
ac27b0f5 | 663 | sv_setpv(sv, PL_osname); |
3511154c DM |
664 | SvTAINTED_off(sv); |
665 | } | |
ac27b0f5 NIS |
666 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
667 | if (!PL_compiling.cop_io) | |
668 | sv_setsv(sv, &PL_sv_undef); | |
669 | else { | |
670 | sv_setsv(sv, PL_compiling.cop_io); | |
671 | } | |
672 | } | |
28f23441 | 673 | break; |
79072805 | 674 | case '\020': /* ^P */ |
3280af22 | 675 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 676 | break; |
fb73857a | 677 | case '\023': /* ^S */ |
4ffa73a3 | 678 | if (*(mg->mg_ptr+1) == '\0') { |
3280af22 | 679 | if (PL_lex_state != LEX_NOTPARSING) |
155aba94 | 680 | (void)SvOK_off(sv); |
3280af22 | 681 | else if (PL_in_eval) |
6dc8a9e4 | 682 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
683 | else |
684 | sv_setiv(sv, 0); | |
d58bf5aa | 685 | } |
fb73857a | 686 | break; |
79072805 | 687 | case '\024': /* ^T */ |
7c36658b | 688 | if (*(mg->mg_ptr+1) == '\0') { |
88e89b8a | 689 | #ifdef BIG_TIME |
7c36658b | 690 | sv_setnv(sv, PL_basetime); |
88e89b8a | 691 | #else |
7c36658b | 692 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 693 | #endif |
7c36658b MS |
694 | } |
695 | else if (strEQ(mg->mg_ptr, "\024AINT")) | |
9aa05f58 RGS |
696 | sv_setiv(sv, PL_tainting |
697 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
698 | : 0); | |
7c36658b | 699 | break; |
a05d7ebb JH |
700 | case '\025': /* $^UNICODE */ |
701 | if (strEQ(mg->mg_ptr, "\025NICODE")) | |
702 | sv_setuv(sv, (UV) PL_unicode); | |
fde18df1 JH |
703 | break; |
704 | case '\027': /* ^W & $^WARNING_BITS */ | |
4438c4b7 JH |
705 | if (*(mg->mg_ptr+1) == '\0') |
706 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
0a378802 | 707 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
d3a7d8c7 GS |
708 | if (PL_compiling.cop_warnings == pWARN_NONE || |
709 | PL_compiling.cop_warnings == pWARN_STD) | |
4438c4b7 JH |
710 | { |
711 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
712 | } | |
d3a7d8c7 | 713 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
714 | /* Get the bit mask for $warnings::Bits{all}, because |
715 | * it could have been extended by warnings::register */ | |
716 | SV **bits_all; | |
717 | HV *bits=get_hv("warnings::Bits", FALSE); | |
718 | if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) { | |
719 | sv_setsv(sv, *bits_all); | |
720 | } | |
721 | else { | |
722 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
723 | } | |
ac27b0f5 | 724 | } |
4438c4b7 JH |
725 | else { |
726 | sv_setsv(sv, PL_compiling.cop_warnings); | |
ac27b0f5 | 727 | } |
d3a7d8c7 | 728 | SvPOK_only(sv); |
4438c4b7 | 729 | } |
79072805 LW |
730 | break; |
731 | case '1': case '2': case '3': case '4': | |
732 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 733 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
734 | I32 s1, t1; |
735 | ||
a863c7d1 MB |
736 | /* |
737 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
738 | * XXX Does the new way break anything? | |
739 | */ | |
ffc61ed2 | 740 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 | 741 | getparen: |
eb160463 | 742 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
743 | (s1 = rx->startp[paren]) != -1 && |
744 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 745 | { |
cf93c79d IZ |
746 | i = t1 - s1; |
747 | s = rx->subbeg + s1; | |
01ec43d0 | 748 | if (!rx->subbeg) |
c2e66d9e GS |
749 | break; |
750 | ||
13f57bf8 | 751 | getrx: |
748a9306 | 752 | if (i >= 0) { |
cf93c79d | 753 | sv_setpvn(sv, s, i); |
a30b2f1f | 754 | if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i)) |
7e2040f0 GS |
755 | SvUTF8_on(sv); |
756 | else | |
757 | SvUTF8_off(sv); | |
e9814ee1 HS |
758 | if (PL_tainting) { |
759 | if (RX_MATCH_TAINTED(rx)) { | |
760 | MAGIC* mg = SvMAGIC(sv); | |
761 | MAGIC* mgt; | |
762 | PL_tainted = 1; | |
763 | SvMAGIC(sv) = mg->mg_moremagic; | |
764 | SvTAINT(sv); | |
765 | if ((mgt = SvMAGIC(sv))) { | |
766 | mg->mg_moremagic = mgt; | |
767 | SvMAGIC(sv) = mg; | |
768 | } | |
769 | } else | |
770 | SvTAINTED_off(sv); | |
771 | } | |
748a9306 LW |
772 | break; |
773 | } | |
79072805 | 774 | } |
79072805 | 775 | } |
3280af22 | 776 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
777 | break; |
778 | case '+': | |
aaa362c4 | 779 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 780 | paren = rx->lastparen; |
a0d0e21e LW |
781 | if (paren) |
782 | goto getparen; | |
79072805 | 783 | } |
3280af22 | 784 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 785 | break; |
a01268b5 JH |
786 | case '\016': /* ^N */ |
787 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
788 | paren = rx->lastcloseparen; | |
789 | if (paren) | |
790 | goto getparen; | |
791 | } | |
792 | sv_setsv(sv,&PL_sv_undef); | |
793 | break; | |
79072805 | 794 | case '`': |
aaa362c4 | 795 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
796 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
797 | i = rx->startp[0]; | |
13f57bf8 | 798 | goto getrx; |
79072805 | 799 | } |
79072805 | 800 | } |
3280af22 | 801 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
802 | break; |
803 | case '\'': | |
aaa362c4 | 804 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
805 | if (rx->subbeg && rx->endp[0] != -1) { |
806 | s = rx->subbeg + rx->endp[0]; | |
807 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 808 | goto getrx; |
79072805 | 809 | } |
79072805 | 810 | } |
3280af22 | 811 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
812 | break; |
813 | case '.': | |
814 | #ifndef lint | |
3280af22 | 815 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 816 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 LW |
817 | } |
818 | #endif | |
819 | break; | |
820 | case '?': | |
809a5acc | 821 | { |
809a5acc | 822 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 823 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
824 | LvTARGOFF(sv) = PL_statusvalue; |
825 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 826 | #endif |
809a5acc | 827 | } |
79072805 LW |
828 | break; |
829 | case '^': | |
0daa599b RGS |
830 | if (GvIOp(PL_defoutgv)) |
831 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
832 | if (s) |
833 | sv_setpv(sv,s); | |
834 | else { | |
3280af22 | 835 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
836 | sv_catpv(sv,"_TOP"); |
837 | } | |
838 | break; | |
839 | case '~': | |
0daa599b RGS |
840 | if (GvIOp(PL_defoutgv)) |
841 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 842 | if (!s) |
3280af22 | 843 | s = GvENAME(PL_defoutgv); |
79072805 LW |
844 | sv_setpv(sv,s); |
845 | break; | |
846 | #ifndef lint | |
847 | case '=': | |
0daa599b RGS |
848 | if (GvIOp(PL_defoutgv)) |
849 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
850 | break; |
851 | case '-': | |
0daa599b RGS |
852 | if (GvIOp(PL_defoutgv)) |
853 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
854 | break; |
855 | case '%': | |
0daa599b RGS |
856 | if (GvIOp(PL_defoutgv)) |
857 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 LW |
858 | break; |
859 | #endif | |
860 | case ':': | |
861 | break; | |
862 | case '/': | |
863 | break; | |
864 | case '[': | |
3280af22 | 865 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
866 | break; |
867 | case '|': | |
0daa599b RGS |
868 | if (GvIOp(PL_defoutgv)) |
869 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
870 | break; |
871 | case ',': | |
79072805 LW |
872 | break; |
873 | case '\\': | |
b2ce0fda | 874 | if (PL_ors_sv) |
f28098ff | 875 | sv_copypv(sv, PL_ors_sv); |
79072805 LW |
876 | break; |
877 | case '#': | |
3280af22 | 878 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
879 | break; |
880 | case '!': | |
a5f75d66 | 881 | #ifdef VMS |
65202027 | 882 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 883 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 884 | #else |
88e89b8a | 885 | { |
886 | int saveerrno = errno; | |
65202027 | 887 | sv_setnv(sv, (NV)errno); |
88e89b8a | 888 | #ifdef OS2 |
ed344e4f IZ |
889 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
890 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 891 | else |
a5f75d66 | 892 | #endif |
2304df62 | 893 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 894 | errno = saveerrno; |
895 | } | |
896 | #endif | |
946ec16e | 897 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
898 | break; |
899 | case '<': | |
3280af22 | 900 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
901 | break; |
902 | case '>': | |
3280af22 | 903 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
904 | break; |
905 | case '(': | |
3280af22 | 906 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 907 | #ifdef HAS_GETGROUPS |
785fb66b | 908 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 909 | #endif |
79072805 LW |
910 | goto add_groups; |
911 | case ')': | |
3280af22 | 912 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 913 | #ifdef HAS_GETGROUPS |
785fb66b | 914 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 915 | #endif |
79072805 | 916 | add_groups: |
79072805 | 917 | #ifdef HAS_GETGROUPS |
79072805 | 918 | { |
a0d0e21e | 919 | Groups_t gary[NGROUPS]; |
79072805 | 920 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 921 | while (--i >= 0) |
785fb66b | 922 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
923 | } |
924 | #endif | |
155aba94 | 925 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 | 926 | break; |
cd39f2b6 | 927 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
928 | case '0': |
929 | break; | |
cd39f2b6 | 930 | #endif |
79072805 | 931 | } |
a0d0e21e | 932 | return 0; |
79072805 LW |
933 | } |
934 | ||
935 | int | |
864dbfa3 | 936 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
937 | { |
938 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
939 | ||
940 | if (uf && uf->uf_val) | |
24f81a43 | 941 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
942 | return 0; |
943 | } | |
944 | ||
945 | int | |
864dbfa3 | 946 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
947 | { |
948 | register char *s; | |
88e89b8a | 949 | char *ptr; |
5aabfad6 | 950 | STRLEN len, klen; |
1e422769 | 951 | |
a0d0e21e | 952 | s = SvPV(sv,len); |
5aabfad6 | 953 | ptr = MgPV(mg,klen); |
88e89b8a | 954 | my_setenv(ptr, s); |
1e422769 | 955 | |
a0d0e21e LW |
956 | #ifdef DYNAMIC_ENV_FETCH |
957 | /* We just undefd an environment var. Is a replacement */ | |
958 | /* waiting in the wings? */ | |
959 | if (!len) { | |
5aabfad6 | 960 | SV **valp; |
6b88bc9c | 961 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 962 | s = SvPV(*valp, len); |
a0d0e21e LW |
963 | } |
964 | #endif | |
1e422769 | 965 | |
39e571d4 | 966 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
967 | /* And you'll never guess what the dog had */ |
968 | /* in its mouth... */ | |
3280af22 | 969 | if (PL_tainting) { |
1e422769 | 970 | MgTAINTEDDIR_off(mg); |
971 | #ifdef VMS | |
5aabfad6 | 972 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 973 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
c623ac67 | 974 | Stat_t sbuf; |
1e422769 | 975 | int i = 0, j = 0; |
976 | ||
977 | do { /* DCL$PATH may be a search list */ | |
978 | while (1) { /* as may dev portion of any element */ | |
979 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
980 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
981 | cando_by_name(S_IWUSR,0,elt) ) { | |
982 | MgTAINTEDDIR_on(mg); | |
983 | return 0; | |
984 | } | |
985 | } | |
986 | if ((cp = strchr(elt, ':')) != Nullch) | |
987 | *cp = '\0'; | |
988 | if (my_trnlnm(elt, eltbuf, j++)) | |
989 | elt = eltbuf; | |
990 | else | |
991 | break; | |
992 | } | |
993 | j = 0; | |
994 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
995 | } | |
996 | #endif /* VMS */ | |
5aabfad6 | 997 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 998 | char *strend = s + len; |
463ee0b2 LW |
999 | |
1000 | while (s < strend) { | |
96827780 | 1001 | char tmpbuf[256]; |
c623ac67 | 1002 | Stat_t st; |
5f74f29c | 1003 | I32 i; |
96827780 | 1004 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 1005 | s, strend, ':', &i); |
463ee0b2 | 1006 | s++; |
96827780 MB |
1007 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
1008 | || *tmpbuf != '/' | |
c6ed36e1 | 1009 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1010 | MgTAINTEDDIR_on(mg); |
1e422769 | 1011 | return 0; |
1012 | } | |
463ee0b2 | 1013 | } |
79072805 LW |
1014 | } |
1015 | } | |
39e571d4 | 1016 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1017 | |
79072805 LW |
1018 | return 0; |
1019 | } | |
1020 | ||
1021 | int | |
864dbfa3 | 1022 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1023 | { |
2d8e6c8d GS |
1024 | STRLEN n_a; |
1025 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
1026 | return 0; |
1027 | } | |
1028 | ||
88e89b8a | 1029 | int |
864dbfa3 | 1030 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1031 | { |
1032 | #if defined(VMS) | |
cea2e8a9 | 1033 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1034 | #else |
3280af22 | 1035 | if (PL_localizing) { |
fb73857a | 1036 | HE* entry; |
2d8e6c8d | 1037 | STRLEN n_a; |
fb73857a | 1038 | magic_clear_all_env(sv,mg); |
1039 | hv_iterinit((HV*)sv); | |
155aba94 | 1040 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1041 | I32 keylen; |
1042 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 1043 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 1044 | } |
1045 | } | |
1046 | #endif | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | int | |
864dbfa3 | 1051 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1052 | { |
2f42fcb0 | 1053 | #ifndef PERL_MICRO |
ed79a026 | 1054 | #if defined(VMS) || defined(EPOC) |
cea2e8a9 | 1055 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 1056 | #else |
4efc5df6 | 1057 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) |
7766f137 | 1058 | PerlEnv_clearenv(); |
4efc5df6 GS |
1059 | # else |
1060 | # ifdef USE_ENVIRON_ARRAY | |
1061 | # if defined(USE_ITHREADS) | |
1062 | /* only the parent thread can clobber the process environment */ | |
1063 | if (PL_curinterp == aTHX) | |
1064 | # endif | |
1065 | { | |
1066 | # ifndef PERL_USE_SAFE_PUTENV | |
66b1d557 HM |
1067 | I32 i; |
1068 | ||
3280af22 | 1069 | if (environ == PL_origenviron) |
f2517201 | 1070 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
1071 | else |
1072 | for (i = 0; environ[i]; i++) | |
f2517201 | 1073 | safesysfree(environ[i]); |
4efc5df6 | 1074 | # endif /* PERL_USE_SAFE_PUTENV */ |
f2517201 | 1075 | |
66b1d557 | 1076 | environ[0] = Nullch; |
4efc5df6 GS |
1077 | } |
1078 | # endif /* USE_ENVIRON_ARRAY */ | |
052c2dc6 | 1079 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ |
2f42fcb0 JH |
1080 | #endif /* VMS || EPOC */ |
1081 | #endif /* !PERL_MICRO */ | |
3e3baf6d | 1082 | return 0; |
66b1d557 HM |
1083 | } |
1084 | ||
2e34cc90 CL |
1085 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1086 | static int sig_handlers_initted = 0; | |
1087 | #endif | |
7719e241 | 1088 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1089 | static int sig_ignoring[SIG_SIZE]; /* which signals we are ignoring */ |
1090 | #endif | |
2e34cc90 CL |
1091 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1092 | static int sig_defaulting[SIG_SIZE]; | |
1093 | #endif | |
85b332e2 | 1094 | |
64ca3a65 | 1095 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1096 | #ifdef HAS_SIGPROCMASK |
1097 | static void | |
1098 | restore_sigmask(pTHX_ SV *save_sv) | |
1099 | { | |
1100 | sigset_t *ossetp = (sigset_t *) SvPV_nolen( save_sv ); | |
1101 | (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0); | |
1102 | } | |
1103 | #endif | |
66b1d557 | 1104 | int |
864dbfa3 | 1105 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1106 | { |
1107 | I32 i; | |
2d8e6c8d | 1108 | STRLEN n_a; |
88e89b8a | 1109 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 1110 | i = whichsig(MgPV(mg,n_a)); |
e02bfb16 | 1111 | if (i > 0) { |
22c35a8c GS |
1112 | if(PL_psig_ptr[i]) |
1113 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1114 | else { |
85b332e2 | 1115 | Sighandler_t sigstate; |
2e34cc90 | 1116 | sigstate = rsignal_state(i); |
23ada85b | 1117 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
2e34cc90 CL |
1118 | if (sig_handlers_initted && sig_ignoring[i]) sigstate = SIG_IGN; |
1119 | #endif | |
1120 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1121 | if (sig_handlers_initted && sig_defaulting[i]) sigstate = SIG_DFL; | |
85b332e2 | 1122 | #endif |
88e89b8a | 1123 | /* cache state so we don't fetch it again */ |
ff68c719 | 1124 | if(sigstate == SIG_IGN) |
88e89b8a | 1125 | sv_setpv(sv,"IGNORE"); |
1126 | else | |
3280af22 | 1127 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 1128 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1129 | SvTEMP_off(sv); |
1130 | } | |
1131 | } | |
1132 | return 0; | |
1133 | } | |
1134 | int | |
864dbfa3 | 1135 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1136 | { |
2d4fcd5e AJ |
1137 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1138 | * refactoring might be in order. | |
1139 | */ | |
1140 | register char *s; | |
2d8e6c8d | 1141 | STRLEN n_a; |
2d4fcd5e AJ |
1142 | SV* to_dec; |
1143 | s = MgPV(mg,n_a); | |
1144 | if (*s == '_') { | |
1145 | SV** svp; | |
1146 | if (strEQ(s,"__DIE__")) | |
1147 | svp = &PL_diehook; | |
1148 | else if (strEQ(s,"__WARN__")) | |
1149 | svp = &PL_warnhook; | |
1150 | else | |
1151 | Perl_croak(aTHX_ "No such hook: %s", s); | |
1152 | if (*svp) { | |
1153 | to_dec = *svp; | |
1154 | *svp = 0; | |
1155 | SvREFCNT_dec(to_dec); | |
1156 | } | |
1157 | } | |
1158 | else { | |
1159 | I32 i; | |
1160 | /* Are we clearing a signal entry? */ | |
1161 | i = whichsig(s); | |
e02bfb16 | 1162 | if (i > 0) { |
2d4fcd5e AJ |
1163 | #ifdef HAS_SIGPROCMASK |
1164 | sigset_t set, save; | |
1165 | SV* save_sv; | |
1166 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1167 | sigemptyset(&set); | |
1168 | sigaddset(&set,i); | |
1169 | sigprocmask(SIG_BLOCK, &set, &save); | |
1170 | ENTER; | |
1171 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1172 | SAVEFREESV(save_sv); | |
1173 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1174 | #endif | |
1175 | PERL_ASYNC_CHECK(); | |
1176 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
1177 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1178 | #endif | |
1179 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1180 | sig_defaulting[i] = 1; | |
5c1546dc | 1181 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1182 | #else |
1183 | (void)rsignal(i, SIG_DFL); | |
1184 | #endif | |
1185 | if(PL_psig_name[i]) { | |
1186 | SvREFCNT_dec(PL_psig_name[i]); | |
1187 | PL_psig_name[i]=0; | |
1188 | } | |
1189 | if(PL_psig_ptr[i]) { | |
1190 | to_dec=PL_psig_ptr[i]; | |
1191 | PL_psig_ptr[i]=0; | |
1192 | LEAVE; | |
1193 | SvREFCNT_dec(to_dec); | |
1194 | } | |
1195 | else | |
1196 | LEAVE; | |
1197 | } | |
88e89b8a | 1198 | } |
1199 | return 0; | |
1200 | } | |
3d37d572 | 1201 | |
0a8e0eff NIS |
1202 | void |
1203 | Perl_raise_signal(pTHX_ int sig) | |
1204 | { | |
1205 | /* Set a flag to say this signal is pending */ | |
1206 | PL_psig_pend[sig]++; | |
1207 | /* And one to say _a_ signal is pending */ | |
1208 | PL_sig_pending = 1; | |
1209 | } | |
1210 | ||
1211 | Signal_t | |
1212 | Perl_csighandler(int sig) | |
1213 | { | |
1018e26f NIS |
1214 | #ifdef PERL_GET_SIG_CONTEXT |
1215 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1216 | #else | |
85b332e2 CL |
1217 | dTHX; |
1218 | #endif | |
23ada85b | 1219 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1220 | (void) rsignal(sig, PL_csighandlerp); |
85b332e2 CL |
1221 | if (sig_ignoring[sig]) return; |
1222 | #endif | |
2e34cc90 | 1223 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
7719e241 | 1224 | if (sig_defaulting[sig]) |
2e34cc90 CL |
1225 | #ifdef KILL_BY_SIGPRC |
1226 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1227 | #else | |
1228 | exit(1); | |
1229 | #endif | |
1230 | #endif | |
4ffa73a3 JH |
1231 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
1232 | /* Call the perl level handler now-- | |
1233 | * with risk we may be in malloc() etc. */ | |
1234 | (*PL_sighandlerp)(sig); | |
1235 | else | |
1236 | Perl_raise_signal(aTHX_ sig); | |
0a8e0eff NIS |
1237 | } |
1238 | ||
2e34cc90 CL |
1239 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1240 | void | |
1241 | Perl_csighandler_init(void) | |
1242 | { | |
1243 | int sig; | |
1244 | if (sig_handlers_initted) return; | |
1245 | ||
1246 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1247 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1248 | dTHX; |
2e34cc90 | 1249 | sig_defaulting[sig] = 1; |
5c1546dc | 1250 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1251 | #endif |
1252 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
1253 | sig_ignoring[sig] = 0; | |
1254 | #endif | |
1255 | } | |
1256 | sig_handlers_initted = 1; | |
1257 | } | |
1258 | #endif | |
1259 | ||
0a8e0eff NIS |
1260 | void |
1261 | Perl_despatch_signals(pTHX) | |
1262 | { | |
1263 | int sig; | |
1264 | PL_sig_pending = 0; | |
1265 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1266 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1267 | PERL_BLOCKSIG_ADD(set, sig); |
1268 | PL_psig_pend[sig] = 0; | |
1269 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1270 | (*PL_sighandlerp)(sig); |
25da4428 | 1271 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1272 | } |
1273 | } | |
1274 | } | |
1275 | ||
85e6fe83 | 1276 | int |
864dbfa3 | 1277 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1278 | { |
1279 | register char *s; | |
1280 | I32 i; | |
b7953727 | 1281 | SV** svp = 0; |
2d4fcd5e AJ |
1282 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1283 | * effects (due to closures). We must make sure that the new disposition | |
1284 | * is in place before it is called. | |
1285 | */ | |
1286 | SV* to_dec = 0; | |
e72dc28c | 1287 | STRLEN len; |
2d4fcd5e AJ |
1288 | #ifdef HAS_SIGPROCMASK |
1289 | sigset_t set, save; | |
1290 | SV* save_sv; | |
1291 | #endif | |
a0d0e21e | 1292 | |
e72dc28c | 1293 | s = MgPV(mg,len); |
748a9306 LW |
1294 | if (*s == '_') { |
1295 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1296 | svp = &PL_diehook; |
748a9306 | 1297 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1298 | svp = &PL_warnhook; |
748a9306 | 1299 | else |
cea2e8a9 | 1300 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1301 | i = 0; |
4633a7c4 | 1302 | if (*svp) { |
2d4fcd5e | 1303 | to_dec = *svp; |
4633a7c4 LW |
1304 | *svp = 0; |
1305 | } | |
748a9306 LW |
1306 | } |
1307 | else { | |
1308 | i = whichsig(s); /* ...no, a brick */ | |
e02bfb16 | 1309 | if (i < 0) { |
e476b1b5 | 1310 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1311 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1312 | return 0; |
1313 | } | |
2d4fcd5e AJ |
1314 | #ifdef HAS_SIGPROCMASK |
1315 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1316 | sigemptyset(&set); | |
1317 | sigaddset(&set,i); | |
1318 | sigprocmask(SIG_BLOCK, &set, &save); | |
1319 | ENTER; | |
1320 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1321 | SAVEFREESV(save_sv); | |
1322 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1323 | #endif | |
1324 | PERL_ASYNC_CHECK(); | |
2e34cc90 CL |
1325 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1326 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1327 | #endif | |
23ada85b | 1328 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1329 | sig_ignoring[i] = 0; |
1330 | #endif | |
2e34cc90 | 1331 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
2d4fcd5e | 1332 | sig_defaulting[i] = 0; |
2e34cc90 | 1333 | #endif |
22c35a8c | 1334 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1335 | to_dec = PL_psig_ptr[i]; |
22c35a8c | 1336 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1337 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1338 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1339 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1340 | } |
a0d0e21e | 1341 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1342 | if (i) { |
5c1546dc | 1343 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1344 | #ifdef HAS_SIGPROCMASK |
1345 | LEAVE; | |
1346 | #endif | |
1347 | } | |
748a9306 LW |
1348 | else |
1349 | *svp = SvREFCNT_inc(sv); | |
2d4fcd5e AJ |
1350 | if(to_dec) |
1351 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1352 | return 0; |
1353 | } | |
e72dc28c | 1354 | s = SvPV_force(sv,len); |
748a9306 | 1355 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1356 | if (i) { |
23ada85b | 1357 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 | 1358 | sig_ignoring[i] = 1; |
5c1546dc | 1359 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1360 | #else |
ff68c719 | 1361 | (void)rsignal(i, SIG_IGN); |
85b332e2 | 1362 | #endif |
2d4fcd5e | 1363 | } |
748a9306 LW |
1364 | } |
1365 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1366 | if (i) | |
2e34cc90 CL |
1367 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1368 | { | |
1369 | sig_defaulting[i] = 1; | |
5c1546dc | 1370 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1371 | } |
1372 | #else | |
ff68c719 | 1373 | (void)rsignal(i, SIG_DFL); |
2e34cc90 | 1374 | #endif |
748a9306 | 1375 | } |
79072805 | 1376 | else { |
5aabfad6 | 1377 | /* |
1378 | * We should warn if HINT_STRICT_REFS, but without | |
1379 | * access to a known hint bit in a known OP, we can't | |
1380 | * tell whether HINT_STRICT_REFS is in force or not. | |
1381 | */ | |
46fc3d4c | 1382 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 1383 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 1384 | if (i) |
5c1546dc | 1385 | (void)rsignal(i, PL_csighandlerp); |
748a9306 LW |
1386 | else |
1387 | *svp = SvREFCNT_inc(sv); | |
79072805 | 1388 | } |
2d4fcd5e AJ |
1389 | #ifdef HAS_SIGPROCMASK |
1390 | if(i) | |
1391 | LEAVE; | |
1392 | #endif | |
1393 | if(to_dec) | |
1394 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1395 | return 0; |
1396 | } | |
64ca3a65 | 1397 | #endif /* !PERL_MICRO */ |
79072805 LW |
1398 | |
1399 | int | |
864dbfa3 | 1400 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1401 | { |
3280af22 | 1402 | PL_sub_generation++; |
463ee0b2 LW |
1403 | return 0; |
1404 | } | |
1405 | ||
1406 | int | |
864dbfa3 | 1407 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1408 | { |
a0d0e21e | 1409 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1410 | PL_amagic_generation++; |
463ee0b2 | 1411 | |
a0d0e21e LW |
1412 | return 0; |
1413 | } | |
463ee0b2 | 1414 | |
946ec16e | 1415 | int |
864dbfa3 | 1416 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1417 | { |
1418 | HV *hv = (HV*)LvTARG(sv); | |
6ff81951 | 1419 | I32 i = 0; |
7719e241 | 1420 | |
6ff81951 | 1421 | if (hv) { |
497b47a8 JH |
1422 | (void) hv_iterinit(hv); |
1423 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1424 | i = HvKEYS(hv); | |
1425 | else { | |
1426 | while (hv_iternext(hv)) | |
1427 | i++; | |
1428 | } | |
6ff81951 GS |
1429 | } |
1430 | ||
1431 | sv_setiv(sv, (IV)i); | |
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | int | |
864dbfa3 | 1436 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1437 | { |
1438 | if (LvTARG(sv)) { | |
1439 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1440 | } |
1441 | return 0; | |
ac27b0f5 | 1442 | } |
946ec16e | 1443 | |
e336de0d | 1444 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1445 | STATIC int |
cea2e8a9 | 1446 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1447 | { |
1448 | dSP; | |
463ee0b2 | 1449 | |
924508f0 GS |
1450 | PUSHMARK(SP); |
1451 | EXTEND(SP, n); | |
33c27489 | 1452 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1453 | if (n > 1) { |
93965878 | 1454 | if (mg->mg_ptr) { |
565764a8 | 1455 | if (mg->mg_len >= 0) |
79cb57f6 | 1456 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1457 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1458 | PUSHs((SV*)mg->mg_ptr); |
1459 | } | |
14befaf4 | 1460 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1461 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1462 | } |
1463 | } | |
1464 | if (n > 2) { | |
1465 | PUSHs(val); | |
88e89b8a | 1466 | } |
463ee0b2 LW |
1467 | PUTBACK; |
1468 | ||
864dbfa3 | 1469 | return call_method(meth, flags); |
946ec16e | 1470 | } |
1471 | ||
76e3520e | 1472 | STATIC int |
cea2e8a9 | 1473 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1474 | { |
1475 | dSP; | |
463ee0b2 | 1476 | |
a0d0e21e LW |
1477 | ENTER; |
1478 | SAVETMPS; | |
e788e7d3 | 1479 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1480 | |
33c27489 | 1481 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1482 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1483 | } |
463ee0b2 | 1484 | |
d3acc0f7 | 1485 | POPSTACK; |
a0d0e21e LW |
1486 | FREETMPS; |
1487 | LEAVE; | |
1488 | return 0; | |
1489 | } | |
463ee0b2 | 1490 | |
a0d0e21e | 1491 | int |
864dbfa3 | 1492 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1493 | { |
a0d0e21e LW |
1494 | if (mg->mg_ptr) |
1495 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1496 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1497 | return 0; |
1498 | } | |
1499 | ||
1500 | int | |
864dbfa3 | 1501 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1502 | { |
1503 | dSP; | |
a60c0954 | 1504 | ENTER; |
e788e7d3 | 1505 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1506 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1507 | POPSTACK; |
a60c0954 | 1508 | LEAVE; |
463ee0b2 LW |
1509 | return 0; |
1510 | } | |
1511 | ||
1512 | int | |
864dbfa3 | 1513 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1514 | { |
a0d0e21e LW |
1515 | return magic_methpack(sv,mg,"DELETE"); |
1516 | } | |
463ee0b2 | 1517 | |
93965878 NIS |
1518 | |
1519 | U32 | |
864dbfa3 | 1520 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1521 | { |
e336de0d | 1522 | dSP; |
93965878 NIS |
1523 | U32 retval = 0; |
1524 | ||
1525 | ENTER; | |
1526 | SAVETMPS; | |
e788e7d3 | 1527 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1528 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1529 | sv = *PL_stack_sp--; |
a60c0954 | 1530 | retval = (U32) SvIV(sv)-1; |
93965878 | 1531 | } |
d3acc0f7 | 1532 | POPSTACK; |
93965878 NIS |
1533 | FREETMPS; |
1534 | LEAVE; | |
1535 | return retval; | |
1536 | } | |
1537 | ||
cea2e8a9 GS |
1538 | int |
1539 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1540 | { |
1541 | dSP; | |
463ee0b2 | 1542 | |
e336de0d | 1543 | ENTER; |
e788e7d3 | 1544 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1545 | PUSHMARK(SP); |
33c27489 | 1546 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1547 | PUTBACK; |
864dbfa3 | 1548 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1549 | POPSTACK; |
a60c0954 | 1550 | LEAVE; |
a3bcc51e | 1551 | |
463ee0b2 LW |
1552 | return 0; |
1553 | } | |
1554 | ||
1555 | int | |
864dbfa3 | 1556 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1557 | { |
463ee0b2 | 1558 | dSP; |
dff6d3cd | 1559 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1560 | |
1561 | ENTER; | |
a0d0e21e | 1562 | SAVETMPS; |
e788e7d3 | 1563 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1564 | PUSHMARK(SP); |
1565 | EXTEND(SP, 2); | |
33c27489 | 1566 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1567 | if (SvOK(key)) |
1568 | PUSHs(key); | |
1569 | PUTBACK; | |
1570 | ||
864dbfa3 | 1571 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1572 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1573 | |
d3acc0f7 | 1574 | POPSTACK; |
a0d0e21e LW |
1575 | FREETMPS; |
1576 | LEAVE; | |
79072805 LW |
1577 | return 0; |
1578 | } | |
1579 | ||
1580 | int | |
864dbfa3 | 1581 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1582 | { |
1583 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1584 | } |
a0d0e21e | 1585 | |
a3bcc51e TP |
1586 | SV * |
1587 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1588 | { | |
1589 | dSP; | |
1590 | SV *retval = &PL_sv_undef; | |
1591 | SV *tied = SvTIED_obj((SV*)hv, mg); | |
1592 | HV *pkg = SvSTASH((SV*)SvRV(tied)); | |
1593 | ||
1594 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1595 | SV *key; | |
1596 | if (HvEITER(hv)) | |
1597 | /* we are in an iteration so the hash cannot be empty */ | |
1598 | return &PL_sv_yes; | |
1599 | /* no xhv_eiter so now use FIRSTKEY */ | |
1600 | key = sv_newmortal(); | |
1601 | magic_nextpack((SV*)hv, mg, key); | |
1602 | HvEITER(hv) = NULL; /* need to reset iterator */ | |
1603 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; | |
1604 | } | |
1605 | ||
1606 | /* there is a SCALAR method that we can call */ | |
1607 | ENTER; | |
1608 | PUSHSTACKi(PERLSI_MAGIC); | |
1609 | PUSHMARK(SP); | |
1610 | EXTEND(SP, 1); | |
1611 | PUSHs(tied); | |
1612 | PUTBACK; | |
1613 | ||
1614 | if (call_method("SCALAR", G_SCALAR)) | |
1615 | retval = *PL_stack_sp--; | |
1616 | POPSTACK; | |
1617 | LEAVE; | |
1618 | return retval; | |
1619 | } | |
1620 | ||
a0d0e21e | 1621 | int |
864dbfa3 | 1622 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1623 | { |
1624 | OP *o; | |
1625 | I32 i; | |
1626 | GV* gv; | |
1627 | SV** svp; | |
2d8e6c8d | 1628 | STRLEN n_a; |
79072805 | 1629 | |
3280af22 | 1630 | gv = PL_DBline; |
79072805 | 1631 | i = SvTRUE(sv); |
188ea221 | 1632 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1633 | atoi(MgPV(mg,n_a)), FALSE); |
5df8de69 DM |
1634 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) { |
1635 | /* set or clear breakpoint in the relevant control op */ | |
1636 | if (i) | |
1637 | o->op_flags |= OPf_SPECIAL; | |
1638 | else | |
1639 | o->op_flags &= ~OPf_SPECIAL; | |
1640 | } | |
79072805 LW |
1641 | return 0; |
1642 | } | |
1643 | ||
1644 | int | |
864dbfa3 | 1645 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1646 | { |
3280af22 | 1647 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1648 | return 0; |
1649 | } | |
1650 | ||
1651 | int | |
864dbfa3 | 1652 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1653 | { |
3280af22 | 1654 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1655 | return 0; |
1656 | } | |
1657 | ||
1658 | int | |
864dbfa3 | 1659 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1660 | { |
1661 | SV* lsv = LvTARG(sv); | |
ac27b0f5 | 1662 | |
a0d0e21e | 1663 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
14befaf4 | 1664 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
565764a8 | 1665 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 | 1666 | I32 i = mg->mg_len; |
7e2040f0 | 1667 | if (DO_UTF8(lsv)) |
a0ed51b3 LW |
1668 | sv_pos_b2u(lsv, &i); |
1669 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1670 | return 0; |
1671 | } | |
1672 | } | |
1673 | (void)SvOK_off(sv); | |
1674 | return 0; | |
1675 | } | |
1676 | ||
1677 | int | |
864dbfa3 | 1678 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1679 | { |
1680 | SV* lsv = LvTARG(sv); | |
1681 | SSize_t pos; | |
1682 | STRLEN len; | |
c00206c8 | 1683 | STRLEN ulen = 0; |
a0d0e21e LW |
1684 | |
1685 | mg = 0; | |
ac27b0f5 | 1686 | |
a0d0e21e | 1687 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
14befaf4 | 1688 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e LW |
1689 | if (!mg) { |
1690 | if (!SvOK(sv)) | |
1691 | return 0; | |
14befaf4 DM |
1692 | sv_magic(lsv, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1693 | mg = mg_find(lsv, PERL_MAGIC_regex_global); | |
a0d0e21e LW |
1694 | } |
1695 | else if (!SvOK(sv)) { | |
565764a8 | 1696 | mg->mg_len = -1; |
a0d0e21e LW |
1697 | return 0; |
1698 | } | |
1699 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1700 | ||
c485e607 | 1701 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 | 1702 | |
7e2040f0 | 1703 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1704 | ulen = sv_len_utf8(lsv); |
1705 | if (ulen) | |
1706 | len = ulen; | |
a0ed51b3 LW |
1707 | } |
1708 | ||
a0d0e21e LW |
1709 | if (pos < 0) { |
1710 | pos += len; | |
1711 | if (pos < 0) | |
1712 | pos = 0; | |
1713 | } | |
eb160463 | 1714 | else if (pos > (SSize_t)len) |
a0d0e21e | 1715 | pos = len; |
a0ed51b3 LW |
1716 | |
1717 | if (ulen) { | |
1718 | I32 p = pos; | |
1719 | sv_pos_u2b(lsv, &p, 0); | |
1720 | pos = p; | |
1721 | } | |
727405f8 | 1722 | |
565764a8 | 1723 | mg->mg_len = pos; |
71be2cbc | 1724 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1725 | |
79072805 LW |
1726 | return 0; |
1727 | } | |
1728 | ||
1729 | int | |
864dbfa3 | 1730 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1731 | { |
8646b087 | 1732 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1733 | SvFAKE_off(sv); | |
946ec16e | 1734 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1735 | SvFAKE_on(sv); |
1736 | } | |
1737 | else | |
946ec16e | 1738 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1739 | return 0; |
1740 | } | |
1741 | ||
1742 | int | |
864dbfa3 | 1743 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1744 | { |
1745 | register char *s; | |
1746 | GV* gv; | |
2d8e6c8d | 1747 | STRLEN n_a; |
79072805 LW |
1748 | |
1749 | if (!SvOK(sv)) | |
1750 | return 0; | |
2d8e6c8d | 1751 | s = SvPV(sv, n_a); |
79072805 LW |
1752 | if (*s == '*' && s[1]) |
1753 | s++; | |
85e6fe83 | 1754 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1755 | if (sv == (SV*)gv) |
1756 | return 0; | |
1757 | if (GvGP(sv)) | |
88e89b8a | 1758 | gp_free((GV*)sv); |
79072805 | 1759 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1760 | return 0; |
1761 | } | |
1762 | ||
1763 | int | |
864dbfa3 | 1764 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1765 | { |
1766 | STRLEN len; | |
1767 | SV *lsv = LvTARG(sv); | |
1768 | char *tmps = SvPV(lsv,len); | |
1769 | I32 offs = LvTARGOFF(sv); | |
1770 | I32 rem = LvTARGLEN(sv); | |
1771 | ||
9aa983d2 JH |
1772 | if (SvUTF8(lsv)) |
1773 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1774 | if (offs > (I32)len) |
6ff81951 | 1775 | offs = len; |
eb160463 | 1776 | if (rem + offs > (I32)len) |
6ff81951 GS |
1777 | rem = len - offs; |
1778 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1779 | if (SvUTF8(lsv)) |
2ef4b674 | 1780 | SvUTF8_on(sv); |
6ff81951 GS |
1781 | return 0; |
1782 | } | |
1783 | ||
1784 | int | |
864dbfa3 | 1785 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1786 | { |
9aa983d2 JH |
1787 | STRLEN len; |
1788 | char *tmps = SvPV(sv, len); | |
1789 | SV *lsv = LvTARG(sv); | |
1790 | I32 lvoff = LvTARGOFF(sv); | |
1791 | I32 lvlen = LvTARGLEN(sv); | |
075a4a2b | 1792 | |
1aa99e6b | 1793 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1794 | sv_utf8_upgrade(lsv); |
1795 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1796 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1797 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1798 | SvUTF8_on(lsv); |
1799 | } | |
9bf12eaf | 1800 | else if (lsv && SvUTF8(lsv)) { |
9aa983d2 | 1801 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1802 | LvTARGLEN(sv) = len; |
e95af362 | 1803 | tmps = (char*)bytes_to_utf8((U8*)tmps, &len); |
9aa983d2 JH |
1804 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1805 | Safefree(tmps); | |
1aa99e6b | 1806 | } |
b76f3ce2 GB |
1807 | else { |
1808 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1809 | LvTARGLEN(sv) = len; | |
1810 | } | |
1811 | ||
1aa99e6b | 1812 | |
79072805 LW |
1813 | return 0; |
1814 | } | |
1815 | ||
1816 | int | |
864dbfa3 | 1817 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1818 | { |
565764a8 | 1819 | TAINT_IF((mg->mg_len & 1) || |
155aba94 | 1820 | ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */ |
463ee0b2 LW |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | int | |
864dbfa3 | 1825 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1826 | { |
3280af22 NIS |
1827 | if (PL_localizing) { |
1828 | if (PL_localizing == 1) | |
565764a8 | 1829 | mg->mg_len <<= 1; |
748a9306 | 1830 | else |
565764a8 | 1831 | mg->mg_len >>= 1; |
a0d0e21e | 1832 | } |
3280af22 | 1833 | else if (PL_tainted) |
565764a8 | 1834 | mg->mg_len |= 1; |
748a9306 | 1835 | else |
565764a8 | 1836 | mg->mg_len &= ~1; |
463ee0b2 LW |
1837 | return 0; |
1838 | } | |
1839 | ||
1840 | int | |
864dbfa3 | 1841 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1842 | { |
1843 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1844 | |
1845 | if (!lsv) { | |
155aba94 | 1846 | (void)SvOK_off(sv); |
6ff81951 GS |
1847 | return 0; |
1848 | } | |
6ff81951 | 1849 | |
81e118e0 | 1850 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1851 | return 0; |
1852 | } | |
1853 | ||
1854 | int | |
864dbfa3 | 1855 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1856 | { |
1857 | do_vecset(sv); /* XXX slurp this routine */ | |
1858 | return 0; | |
1859 | } | |
1860 | ||
1861 | int | |
864dbfa3 | 1862 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1863 | { |
71be2cbc | 1864 | SV *targ = Nullsv; |
5f05dabc | 1865 | if (LvTARGLEN(sv)) { |
68dc0745 | 1866 | if (mg->mg_obj) { |
74e13ce4 | 1867 | SV *ahv = LvTARG(sv); |
6d822dc4 MS |
1868 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1869 | if (he) | |
1870 | targ = HeVAL(he); | |
68dc0745 | 1871 | } |
1872 | else { | |
3c78fafa | 1873 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1874 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1875 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1876 | } | |
3280af22 | 1877 | if (targ && targ != &PL_sv_undef) { |
68dc0745 | 1878 | /* somebody else defined it for us */ |
1879 | SvREFCNT_dec(LvTARG(sv)); | |
1880 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1881 | LvTARGLEN(sv) = 0; | |
1882 | SvREFCNT_dec(mg->mg_obj); | |
1883 | mg->mg_obj = Nullsv; | |
1884 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1885 | } | |
5f05dabc | 1886 | } |
71be2cbc | 1887 | else |
1888 | targ = LvTARG(sv); | |
3280af22 | 1889 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1890 | return 0; |
1891 | } | |
1892 | ||
1893 | int | |
864dbfa3 | 1894 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1895 | { |
1896 | if (LvTARGLEN(sv)) | |
68dc0745 | 1897 | vivify_defelem(sv); |
1898 | if (LvTARG(sv)) { | |
5f05dabc | 1899 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1900 | SvSETMAGIC(LvTARG(sv)); |
1901 | } | |
5f05dabc | 1902 | return 0; |
1903 | } | |
1904 | ||
71be2cbc | 1905 | void |
864dbfa3 | 1906 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1907 | { |
74e13ce4 GS |
1908 | MAGIC *mg; |
1909 | SV *value = Nullsv; | |
71be2cbc | 1910 | |
14befaf4 | 1911 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 1912 | return; |
68dc0745 | 1913 | if (mg->mg_obj) { |
74e13ce4 | 1914 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1915 | STRLEN n_a; |
6d822dc4 MS |
1916 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
1917 | if (he) | |
1918 | value = HeVAL(he); | |
3280af22 | 1919 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1920 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1921 | } |
68dc0745 | 1922 | else { |
1923 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1924 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1925 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1926 | else { | |
1927 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1928 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1929 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1930 | } |
1931 | } | |
3e3baf6d | 1932 | (void)SvREFCNT_inc(value); |
68dc0745 | 1933 | SvREFCNT_dec(LvTARG(sv)); |
1934 | LvTARG(sv) = value; | |
71be2cbc | 1935 | LvTARGLEN(sv) = 0; |
68dc0745 | 1936 | SvREFCNT_dec(mg->mg_obj); |
1937 | mg->mg_obj = Nullsv; | |
1938 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1939 | } |
1940 | ||
1941 | int | |
864dbfa3 | 1942 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1943 | { |
1944 | AV *av = (AV*)mg->mg_obj; | |
1945 | SV **svp = AvARRAY(av); | |
1946 | I32 i = AvFILLp(av); | |
1947 | while (i >= 0) { | |
fdc9a813 | 1948 | if (svp[i]) { |
810b8aa5 | 1949 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 | 1950 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1951 | /* XXX Should we check that it hasn't changed? */ |
1952 | SvRV(svp[i]) = 0; | |
155aba94 | 1953 | (void)SvOK_off(svp[i]); |
810b8aa5 | 1954 | SvWEAKREF_off(svp[i]); |
fdc9a813 | 1955 | svp[i] = Nullsv; |
810b8aa5 GS |
1956 | } |
1957 | i--; | |
1958 | } | |
d99b02a1 | 1959 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ |
810b8aa5 GS |
1960 | return 0; |
1961 | } | |
1962 | ||
1963 | int | |
864dbfa3 | 1964 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1965 | { |
565764a8 | 1966 | mg->mg_len = -1; |
c6496cc7 | 1967 | SvSCREAM_off(sv); |
93a17b20 LW |
1968 | return 0; |
1969 | } | |
1970 | ||
1971 | int | |
864dbfa3 | 1972 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1973 | { |
14befaf4 | 1974 | sv_unmagic(sv, PERL_MAGIC_bm); |
79072805 LW |
1975 | SvVALID_off(sv); |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | int | |
864dbfa3 | 1980 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1981 | { |
14befaf4 | 1982 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 1983 | SvCOMPILED_off(sv); |
1984 | return 0; | |
1985 | } | |
1986 | ||
1987 | int | |
864dbfa3 | 1988 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1989 | { |
1990 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1991 | ||
1992 | if (uf && uf->uf_set) | |
24f81a43 | 1993 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
1994 | return 0; |
1995 | } | |
1996 | ||
c277df42 | 1997 | int |
faf82a0b AE |
1998 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
1999 | { | |
2000 | sv_unmagic(sv, PERL_MAGIC_qr); | |
2001 | return 0; | |
2002 | } | |
2003 | ||
2004 | int | |
864dbfa3 | 2005 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
2006 | { |
2007 | regexp *re = (regexp *)mg->mg_obj; | |
2008 | ReREFCNT_dec(re); | |
2009 | return 0; | |
2010 | } | |
2011 | ||
7a4c00b4 | 2012 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2013 | int |
864dbfa3 | 2014 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2015 | { |
2016 | /* | |
838b5b74 | 2017 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2018 | * and vanished with a faint plop. |
2019 | */ | |
7a4c00b4 | 2020 | if (mg->mg_ptr) { |
2021 | Safefree(mg->mg_ptr); | |
2022 | mg->mg_ptr = NULL; | |
565764a8 | 2023 | mg->mg_len = -1; |
7a4c00b4 | 2024 | } |
bbce6d69 | 2025 | return 0; |
2026 | } | |
7a4c00b4 | 2027 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2028 | |
7e8c5dac HS |
2029 | /* Just clear the UTF-8 cache data. */ |
2030 | int | |
2031 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2032 | { | |
2033 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ | |
2034 | mg->mg_ptr = 0; | |
2035 | mg->mg_len = -1; /* The mg_len holds the len cache. */ | |
2036 | return 0; | |
2037 | } | |
2038 | ||
bbce6d69 | 2039 | int |
864dbfa3 | 2040 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
2041 | { |
2042 | register char *s; | |
2043 | I32 i; | |
8990e307 | 2044 | STRLEN len; |
79072805 | 2045 | switch (*mg->mg_ptr) { |
748a9306 | 2046 | case '\001': /* ^A */ |
3280af22 | 2047 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2048 | break; |
49460fe6 | 2049 | case '\003': /* ^C */ |
eb160463 | 2050 | PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
49460fe6 NIS |
2051 | break; |
2052 | ||
79072805 | 2053 | case '\004': /* ^D */ |
b4ab917c DM |
2054 | #ifdef DEBUGGING |
2055 | s = SvPV_nolen(sv); | |
2056 | PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG; | |
79072805 | 2057 | DEBUG_x(dump_all()); |
b4ab917c DM |
2058 | #else |
2059 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG; | |
2060 | #endif | |
79072805 | 2061 | break; |
28f23441 | 2062 | case '\005': /* ^E */ |
d0063567 | 2063 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2064 | #ifdef MACOS_TRADITIONAL |
d0063567 | 2065 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 | 2066 | #else |
cd39f2b6 | 2067 | # ifdef VMS |
d0063567 | 2068 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf | 2069 | # else |
cd39f2b6 | 2070 | # ifdef WIN32 |
d0063567 | 2071 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2072 | # else |
9fed8b87 | 2073 | # ifdef OS2 |
d0063567 | 2074 | os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
9fed8b87 | 2075 | # else |
d0063567 DK |
2076 | /* will anyone ever use this? */ |
2077 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 2078 | # endif |
048c1ddf IZ |
2079 | # endif |
2080 | # endif | |
22fae026 | 2081 | #endif |
d0063567 DK |
2082 | } |
2083 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2084 | if (PL_encoding) | |
2085 | SvREFCNT_dec(PL_encoding); | |
2086 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2087 | PL_encoding = newSVsv(sv); | |
2088 | } | |
2089 | else { | |
2090 | PL_encoding = Nullsv; | |
2091 | } | |
2092 | } | |
2093 | break; | |
79072805 | 2094 | case '\006': /* ^F */ |
3280af22 | 2095 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 2096 | break; |
a0d0e21e | 2097 | case '\010': /* ^H */ |
3280af22 | 2098 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 2099 | break; |
9d116dd7 | 2100 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
2101 | if (PL_inplace) |
2102 | Safefree(PL_inplace); | |
79072805 | 2103 | if (SvOK(sv)) |
2d8e6c8d | 2104 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 2105 | else |
3280af22 | 2106 | PL_inplace = Nullch; |
79072805 | 2107 | break; |
28f23441 | 2108 | case '\017': /* ^O */ |
ac27b0f5 | 2109 | if (*(mg->mg_ptr+1) == '\0') { |
1bf29663 | 2110 | if (PL_osname) { |
ac27b0f5 | 2111 | Safefree(PL_osname); |
1bf29663 DM |
2112 | PL_osname = Nullch; |
2113 | } | |
3511154c DM |
2114 | if (SvOK(sv)) { |
2115 | TAINT_PROPER("assigning to $^O"); | |
ac27b0f5 | 2116 | PL_osname = savepv(SvPV(sv,len)); |
3511154c | 2117 | } |
ac27b0f5 NIS |
2118 | } |
2119 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
2120 | if (!PL_compiling.cop_io) | |
2121 | PL_compiling.cop_io = newSVsv(sv); | |
2122 | else | |
2123 | sv_setsv(PL_compiling.cop_io,sv); | |
2124 | } | |
28f23441 | 2125 | break; |
79072805 | 2126 | case '\020': /* ^P */ |
3280af22 | 2127 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
39bd0f18 PJ |
2128 | if ((PERLDB_SUB || PERLDB_LINE || PERLDB_SUBLINE || PERLDB_ASSERTION) |
2129 | && !PL_DBsingle) | |
1ee4443e | 2130 | init_debugger(); |
79072805 LW |
2131 | break; |
2132 | case '\024': /* ^T */ | |
88e89b8a | 2133 | #ifdef BIG_TIME |
6b88bc9c | 2134 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2135 | #else |
3280af22 | 2136 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 2137 | #endif |
79072805 | 2138 | break; |
fde18df1 | 2139 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2140 | if (*(mg->mg_ptr+1) == '\0') { |
2141 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
2142 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
ac27b0f5 | 2143 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2144 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2145 | } |
599cee73 | 2146 | } |
0a378802 | 2147 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2148 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2149 | if (!SvPOK(sv) && PL_localizing) { |
2150 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2151 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2152 | break; |
2153 | } | |
f4fc7782 | 2154 | { |
b5477537 | 2155 | STRLEN len, i; |
d3a7d8c7 | 2156 | int accumulate = 0 ; |
f4fc7782 | 2157 | int any_fatals = 0 ; |
d3a7d8c7 | 2158 | char * ptr = (char*)SvPV(sv, len) ; |
f4fc7782 JH |
2159 | for (i = 0 ; i < len ; ++i) { |
2160 | accumulate |= ptr[i] ; | |
2161 | any_fatals |= (ptr[i] & 0xAA) ; | |
2162 | } | |
d3a7d8c7 GS |
2163 | if (!accumulate) |
2164 | PL_compiling.cop_warnings = pWARN_NONE; | |
f4fc7782 JH |
2165 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
2166 | PL_compiling.cop_warnings = pWARN_ALL; | |
2167 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2168 | } |
d3a7d8c7 GS |
2169 | else { |
2170 | if (specialWARN(PL_compiling.cop_warnings)) | |
2171 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
2172 | else | |
2173 | sv_setsv(PL_compiling.cop_warnings, sv); | |
2174 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
2175 | PL_dowarn |= G_WARN_ONCE ; | |
2176 | } | |
f4fc7782 | 2177 | |
d3a7d8c7 | 2178 | } |
4438c4b7 | 2179 | } |
971a9dd3 | 2180 | } |
79072805 LW |
2181 | break; |
2182 | case '.': | |
3280af22 NIS |
2183 | if (PL_localizing) { |
2184 | if (PL_localizing == 1) | |
7766f137 | 2185 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2186 | } |
3280af22 | 2187 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2188 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2189 | break; |
2190 | case '^': | |
3280af22 | 2191 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 2192 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 2193 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
2194 | break; |
2195 | case '~': | |
3280af22 | 2196 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 2197 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 2198 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
2199 | break; |
2200 | case '=': | |
632db599 | 2201 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2202 | break; |
2203 | case '-': | |
632db599 | 2204 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
3280af22 NIS |
2205 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2206 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2207 | break; |
2208 | case '%': | |
632db599 | 2209 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2210 | break; |
2211 | case '|': | |
4b65379b | 2212 | { |
3280af22 | 2213 | IO *io = GvIOp(PL_defoutgv); |
720f287d AB |
2214 | if(!io) |
2215 | break; | |
4b65379b CS |
2216 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
2217 | IoFLAGS(io) &= ~IOf_FLUSH; | |
2218 | else { | |
2219 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2220 | PerlIO *ofp = IoOFP(io); | |
2221 | if (ofp) | |
2222 | (void)PerlIO_flush(ofp); | |
2223 | IoFLAGS(io) |= IOf_FLUSH; | |
2224 | } | |
2225 | } | |
79072805 LW |
2226 | } |
2227 | break; | |
79072805 | 2228 | case '/': |
3280af22 | 2229 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2230 | PL_rs = newSVsv(sv); |
79072805 LW |
2231 | break; |
2232 | case '\\': | |
7889fe52 NIS |
2233 | if (PL_ors_sv) |
2234 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2235 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2236 | PL_ors_sv = newSVsv(sv); |
009c130f | 2237 | } |
e3c19b7b | 2238 | else { |
7889fe52 | 2239 | PL_ors_sv = Nullsv; |
e3c19b7b | 2240 | } |
79072805 LW |
2241 | break; |
2242 | case ',': | |
7889fe52 NIS |
2243 | if (PL_ofs_sv) |
2244 | SvREFCNT_dec(PL_ofs_sv); | |
2245 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2246 | PL_ofs_sv = newSVsv(sv); | |
2247 | } | |
2248 | else { | |
2249 | PL_ofs_sv = Nullsv; | |
2250 | } | |
79072805 LW |
2251 | break; |
2252 | case '#': | |
3280af22 NIS |
2253 | if (PL_ofmt) |
2254 | Safefree(PL_ofmt); | |
2d8e6c8d | 2255 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
2256 | break; |
2257 | case '[': | |
3280af22 | 2258 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
2259 | break; |
2260 | case '?': | |
ff0cee69 | 2261 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2262 | if (PL_localizing == 2) { |
2263 | PL_statusvalue = LvTARGOFF(sv); | |
2264 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2265 | } |
2266 | else | |
2267 | #endif | |
2268 | #ifdef VMSISH_STATUS | |
2269 | if (VMSISH_STATUS) | |
2270 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
2271 | else | |
2272 | #endif | |
2273 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
2274 | break; |
2275 | case '!': | |
93189314 JH |
2276 | { |
2277 | #ifdef VMS | |
2278 | # define PERL_VMS_BANG vaxc$errno | |
2279 | #else | |
2280 | # define PERL_VMS_BANG 0 | |
2281 | #endif | |
91487cfc | 2282 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2283 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2284 | } | |
79072805 LW |
2285 | break; |
2286 | case '<': | |
3280af22 NIS |
2287 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2288 | if (PL_delaymagic) { | |
2289 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2290 | break; /* don't do magic till later */ |
2291 | } | |
2292 | #ifdef HAS_SETRUID | |
b28d0864 | 2293 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2294 | #else |
2295 | #ifdef HAS_SETREUID | |
3280af22 | 2296 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2297 | #else |
85e6fe83 | 2298 | #ifdef HAS_SETRESUID |
b28d0864 | 2299 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2300 | #else |
75870ed3 | 2301 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2302 | #ifdef PERL_DARWIN | |
2303 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2304 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2305 | (void)PerlProc_setuid(0); | |
2306 | #endif | |
b28d0864 | 2307 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2308 | } else { |
d8eceb89 | 2309 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2310 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2311 | } |
79072805 LW |
2312 | #endif |
2313 | #endif | |
85e6fe83 | 2314 | #endif |
d8eceb89 | 2315 | PL_uid = PerlProc_getuid(); |
3280af22 | 2316 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2317 | break; |
2318 | case '>': | |
3280af22 NIS |
2319 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2320 | if (PL_delaymagic) { | |
2321 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2322 | break; /* don't do magic till later */ |
2323 | } | |
2324 | #ifdef HAS_SETEUID | |
3280af22 | 2325 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2326 | #else |
2327 | #ifdef HAS_SETREUID | |
b28d0864 | 2328 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2329 | #else |
2330 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2331 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2332 | #else |
b28d0864 NIS |
2333 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2334 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2335 | else { |
e8ee3774 | 2336 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2337 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2338 | } |
79072805 LW |
2339 | #endif |
2340 | #endif | |
85e6fe83 | 2341 | #endif |
d8eceb89 | 2342 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2343 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2344 | break; |
2345 | case '(': | |
3280af22 NIS |
2346 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2347 | if (PL_delaymagic) { | |
2348 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2349 | break; /* don't do magic till later */ |
2350 | } | |
2351 | #ifdef HAS_SETRGID | |
b28d0864 | 2352 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2353 | #else |
2354 | #ifdef HAS_SETREGID | |
3280af22 | 2355 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2356 | #else |
2357 | #ifdef HAS_SETRESGID | |
b28d0864 | 2358 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2359 | #else |
b28d0864 NIS |
2360 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2361 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2362 | else { |
d8eceb89 | 2363 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2364 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2365 | } |
79072805 LW |
2366 | #endif |
2367 | #endif | |
85e6fe83 | 2368 | #endif |
d8eceb89 | 2369 | PL_gid = PerlProc_getgid(); |
3280af22 | 2370 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2371 | break; |
2372 | case ')': | |
5cd24f17 | 2373 | #ifdef HAS_SETGROUPS |
2374 | { | |
2d8e6c8d | 2375 | char *p = SvPV(sv, len); |
5cd24f17 | 2376 | Groups_t gary[NGROUPS]; |
2377 | ||
5cd24f17 | 2378 | while (isSPACE(*p)) |
2379 | ++p; | |
2d4389e4 | 2380 | PL_egid = Atol(p); |
5cd24f17 | 2381 | for (i = 0; i < NGROUPS; ++i) { |
2382 | while (*p && !isSPACE(*p)) | |
2383 | ++p; | |
2384 | while (isSPACE(*p)) | |
2385 | ++p; | |
2386 | if (!*p) | |
2387 | break; | |
2d4389e4 | 2388 | gary[i] = Atol(p); |
5cd24f17 | 2389 | } |
8cc95fdb | 2390 | if (i) |
2391 | (void)setgroups(i, gary); | |
5cd24f17 | 2392 | } |
2393 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 2394 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 2395 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2396 | if (PL_delaymagic) { |
2397 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2398 | break; /* don't do magic till later */ |
2399 | } | |
2400 | #ifdef HAS_SETEGID | |
3280af22 | 2401 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2402 | #else |
2403 | #ifdef HAS_SETREGID | |
b28d0864 | 2404 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2405 | #else |
2406 | #ifdef HAS_SETRESGID | |
b28d0864 | 2407 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2408 | #else |
b28d0864 NIS |
2409 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2410 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2411 | else { |
d8eceb89 | 2412 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2413 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2414 | } |
79072805 LW |
2415 | #endif |
2416 | #endif | |
85e6fe83 | 2417 | #endif |
d8eceb89 | 2418 | PL_egid = PerlProc_getegid(); |
3280af22 | 2419 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2420 | break; |
2421 | case ':': | |
2d8e6c8d | 2422 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2423 | break; |
cd39f2b6 | 2424 | #ifndef MACOS_TRADITIONAL |
79072805 | 2425 | case '0': |
e2975953 | 2426 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2427 | #ifdef HAS_SETPROCTITLE |
2428 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2429 | * show a string from the process struct and provide | |
2430 | * the setproctitle() routine to manipulate that. */ | |
2431 | { | |
2432 | s = SvPV(sv, len); | |
98b76f99 | 2433 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2434 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2435 | * but not the "(perl) suffix from the ps(1) |
2436 | * output, because that's what ps(1) shows if the | |
2437 | * argv[] is modified. */ | |
6f2ad931 | 2438 | setproctitle("-%s", s); |
9aad2c0e | 2439 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2440 | /* This doesn't really work if you assume that |
2441 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2442 | * because in ps(1) output the result will be like | |
2443 | * sprintf("perl: %s (perl)", s) | |
2444 | * I guess this is a security feature: | |
2445 | * one (a user process) cannot get rid of the original name. | |
2446 | * --jhi */ | |
2447 | setproctitle("%s", s); | |
2448 | # endif | |
2449 | } | |
2450 | #endif | |
17aa7f3d JH |
2451 | #if defined(__hpux) && defined(PSTAT_SETCMD) |
2452 | { | |
2453 | union pstun un; | |
2454 | s = SvPV(sv, len); | |
2455 | un.pst_command = s; | |
2456 | pstat(PSTAT_SETCMD, un, len, 0, 0); | |
2457 | } | |
2458 | #endif | |
3cb9023d | 2459 | /* PL_origalen is set in perl_parse(). */ |
a0d0e21e | 2460 | s = SvPV_force(sv,len); |
6f698202 AMS |
2461 | if (len >= (STRLEN)PL_origalen-1) { |
2462 | /* Longer than original, will be truncated. We assume that | |
2463 | * PL_origalen bytes are available. */ | |
2464 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
79072805 LW |
2465 | } |
2466 | else { | |
54bfe034 JH |
2467 | /* Shorter than original, will be padded. */ |
2468 | Copy(s, PL_origargv[0], len, char); | |
2469 | PL_origargv[0][len] = 0; | |
2470 | memset(PL_origargv[0] + len + 1, | |
2471 | /* Is the space counterintuitive? Yes. | |
2472 | * (You were expecting \0?) | |
3cb9023d | 2473 | * Does it work? Seems to. (In Linux 2.4.20 at least.) |
54bfe034 JH |
2474 | * --jhi */ |
2475 | (int)' ', | |
2476 | PL_origalen - len - 1); | |
79072805 | 2477 | } |
ad7eccf4 JD |
2478 | PL_origargv[0][PL_origalen-1] = 0; |
2479 | for (i = 1; i < PL_origargc; i++) | |
2480 | PL_origargv[i] = 0; | |
e2975953 | 2481 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2482 | break; |
cd39f2b6 | 2483 | #endif |
79072805 LW |
2484 | } |
2485 | return 0; | |
2486 | } | |
2487 | ||
2488 | I32 | |
864dbfa3 | 2489 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
2490 | { |
2491 | register char **sigv; | |
2492 | ||
e02bfb16 | 2493 | for (sigv = PL_sig_name; *sigv; sigv++) |
79072805 | 2494 | if (strEQ(sig,*sigv)) |
22c35a8c | 2495 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
2496 | #ifdef SIGCLD |
2497 | if (strEQ(sig,"CHLD")) | |
2498 | return SIGCLD; | |
2499 | #endif | |
2500 | #ifdef SIGCHLD | |
2501 | if (strEQ(sig,"CLD")) | |
2502 | return SIGCHLD; | |
2503 | #endif | |
7f1236c0 | 2504 | return -1; |
79072805 LW |
2505 | } |
2506 | ||
df3728a2 | 2507 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2508 | static SV* sig_sv; |
df3728a2 | 2509 | #endif |
84902520 | 2510 | |
ecfc5424 | 2511 | Signal_t |
cea2e8a9 | 2512 | Perl_sighandler(int sig) |
79072805 | 2513 | { |
1018e26f NIS |
2514 | #ifdef PERL_GET_SIG_CONTEXT |
2515 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2516 | #else |
cea2e8a9 | 2517 | dTHX; |
71d280e3 | 2518 | #endif |
79072805 | 2519 | dSP; |
00d579c5 | 2520 | GV *gv = Nullgv; |
a0d0e21e | 2521 | HV *st; |
b7953727 | 2522 | SV *sv = Nullsv, *tSv = PL_Sv; |
00d579c5 | 2523 | CV *cv = Nullcv; |
533c011a | 2524 | OP *myop = PL_op; |
84902520 | 2525 | U32 flags = 0; |
3280af22 | 2526 | XPV *tXpv = PL_Xpv; |
71d280e3 | 2527 | |
3280af22 | 2528 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2529 | flags |= 1; |
3280af22 | 2530 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2531 | flags |= 4; |
3280af22 | 2532 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2533 | flags |= 16; |
2534 | ||
727405f8 | 2535 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2536 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2537 | PL_sig_name[sig]); |
2538 | exit(sig); | |
2539 | } | |
ff0cee69 | 2540 | |
84902520 TB |
2541 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2542 | infinity, so we fix 4 (in fact 5): */ | |
2543 | if (flags & 1) { | |
3280af22 | 2544 | PL_savestack_ix += 5; /* Protect save in progress. */ |
c76ac1ee | 2545 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 | 2546 | } |
ac27b0f5 | 2547 | if (flags & 4) |
3280af22 | 2548 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2549 | if (flags & 16) |
3280af22 | 2550 | PL_scopestack_ix += 1; |
84902520 | 2551 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2552 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2553 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2554 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2555 | |
a0d0e21e | 2556 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2557 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2558 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2559 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2560 | : ((cv && CvGV(cv)) |
2561 | ? GvENAME(CvGV(cv)) | |
2562 | : "__ANON__"))); | |
2563 | goto cleanup; | |
79072805 LW |
2564 | } |
2565 | ||
22c35a8c GS |
2566 | if(PL_psig_name[sig]) { |
2567 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 | 2568 | flags |= 64; |
df3728a2 | 2569 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2570 | sig_sv = sv; |
df3728a2 | 2571 | #endif |
84902520 | 2572 | } else { |
ff0cee69 | 2573 | sv = sv_newmortal(); |
22c35a8c | 2574 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2575 | } |
e336de0d | 2576 | |
e788e7d3 | 2577 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2578 | PUSHMARK(SP); |
79072805 | 2579 | PUSHs(sv); |
79072805 | 2580 | PUTBACK; |
a0d0e21e | 2581 | |
1b266415 | 2582 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2583 | |
d3acc0f7 | 2584 | POPSTACK; |
1b266415 | 2585 | if (SvTRUE(ERRSV)) { |
1d615522 | 2586 | #ifndef PERL_MICRO |
983dbef6 | 2587 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2588 | /* Handler "died", for example to get out of a restart-able read(). |
2589 | * Before we re-do that on its behalf re-enable the signal which was | |
2590 | * blocked by the system when we entered. | |
2591 | */ | |
2592 | sigset_t set; | |
2593 | sigemptyset(&set); | |
2594 | sigaddset(&set,sig); | |
2595 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2596 | #else | |
2597 | /* Not clear if this will work */ | |
2598 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2599 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2600 | #endif |
1d615522 | 2601 | #endif /* !PERL_MICRO */ |
b3fe4827 | 2602 | Perl_die(aTHX_ Nullformat); |
1b266415 | 2603 | } |
00d579c5 | 2604 | cleanup: |
84902520 | 2605 | if (flags & 1) |
3280af22 | 2606 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2607 | if (flags & 4) |
3280af22 | 2608 | PL_markstack_ptr--; |
84902520 | 2609 | if (flags & 16) |
3280af22 | 2610 | PL_scopestack_ix -= 1; |
84902520 TB |
2611 | if (flags & 64) |
2612 | SvREFCNT_dec(sv); | |
533c011a | 2613 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2614 | |
3280af22 NIS |
2615 | PL_Sv = tSv; /* Restore global temporaries. */ |
2616 | PL_Xpv = tXpv; | |
53bb94e2 | 2617 | return; |
79072805 | 2618 | } |
4e35701f NIS |
2619 | |
2620 | ||
51371543 | 2621 | static void |
acfe0abc | 2622 | restore_magic(pTHX_ void *p) |
51371543 | 2623 | { |
48944bdf | 2624 | MGS* mgs = SSPTR(PTR2IV(p), MGS*); |
51371543 GS |
2625 | SV* sv = mgs->mgs_sv; |
2626 | ||
2627 | if (!sv) | |
2628 | return; | |
2629 | ||
2630 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2631 | { | |
f9701176 NC |
2632 | #ifdef PERL_COPY_ON_WRITE |
2633 | /* While magic was saved (and off) sv_setsv may well have seen | |
2634 | this SV as a prime candidate for COW. */ | |
2635 | if (SvIsCOW(sv)) | |
2636 | sv_force_normal(sv); | |
2637 | #endif | |
2638 | ||
51371543 GS |
2639 | if (mgs->mgs_flags) |
2640 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2641 | else | |
2642 | mg_magical(sv); | |
2643 | if (SvGMAGICAL(sv)) | |
2644 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2645 | } | |
2646 | ||
2647 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2648 | ||
2649 | /* If we're still on top of the stack, pop us off. (That condition | |
2650 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2651 | * if it's being called via leave_scope.) | |
2652 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2653 | * may leave alloc gunk on the savestack, and some code | |
2654 | * (e.g. sighandler) doesn't expect that... | |
2655 | */ | |
2656 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2657 | { | |
2658 | I32 popval = SSPOPINT; | |
c76ac1ee | 2659 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2660 | PL_savestack_ix -= 2; |
2661 | popval = SSPOPINT; | |
2662 | assert(popval == SAVEt_ALLOC); | |
2663 | popval = SSPOPINT; | |
2664 | PL_savestack_ix -= popval; | |
2665 | } | |
2666 | ||
2667 | } | |
2668 | ||
2669 | static void | |
acfe0abc | 2670 | unwind_handler_stack(pTHX_ void *p) |
51371543 | 2671 | { |
51371543 GS |
2672 | U32 flags = *(U32*)p; |
2673 | ||
2674 | if (flags & 1) | |
2675 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2676 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
df3728a2 | 2677 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 GS |
2678 | if (flags & 64) |
2679 | SvREFCNT_dec(sig_sv); | |
df3728a2 | 2680 | #endif |
51371543 | 2681 | } |
1018e26f NIS |
2682 | |
2683 |