Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cbdf9ef8 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005 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 | |
166f8a29 DM |
18 | |
19 | "Magic" is special data attached to SV structures in order to give them | |
20 | "magical" properties. When any Perl code tries to read from, or assign to, | |
21 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
22 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 23 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
24 | number of the last read filehandle into to the SV's IV slot), while |
25 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 26 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
27 | PL_rs global variable). |
28 | ||
29 | Magic is implemented as a linked list of MAGIC structures attached to the | |
30 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
31 | of functions that implement the get(), set(), length() etc functions, | |
32 | plus space for some flags and pointers. For example, a tied variable has | |
33 | a MAGIC structure that contains a pointer to the object associated with the | |
34 | tie. | |
35 | ||
ccfc67b7 JH |
36 | */ |
37 | ||
79072805 | 38 | #include "EXTERN.h" |
864dbfa3 | 39 | #define PERL_IN_MG_C |
79072805 LW |
40 | #include "perl.h" |
41 | ||
5cd24f17 | 42 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 CS |
43 | # ifndef NGROUPS |
44 | # define NGROUPS 32 | |
45 | # endif | |
b7953727 JH |
46 | # ifdef I_GRP |
47 | # include <grp.h> | |
48 | # endif | |
188ea221 CS |
49 | #endif |
50 | ||
17aa7f3d JH |
51 | #ifdef __hpux |
52 | # include <sys/pstat.h> | |
53 | #endif | |
54 | ||
e69880a5 CB |
55 | Signal_t Perl_csighandler(int sig); |
56 | ||
23ada85b | 57 | /* if you only have signal() and it resets on each signal, FAKE_PERSISTENT_SIGNAL_HANDLERS fixes */ |
85b332e2 | 58 | #if !defined(HAS_SIGACTION) && defined(VMS) |
23ada85b | 59 | # define FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 | 60 | #endif |
2e34cc90 | 61 | /* if we're doing kill() with sys$sigprc on VMS, FAKE_DEFAULT_SIGNAL_HANDLERS */ |
7719e241 | 62 | #if defined(KILL_BY_SIGPRC) |
2e34cc90 CL |
63 | # define FAKE_DEFAULT_SIGNAL_HANDLERS |
64 | #endif | |
85b332e2 | 65 | |
35a4481c AL |
66 | static void restore_magic(pTHX_ const void *p); |
67 | static void unwind_handler_stack(pTHX_ const void *p); | |
51371543 | 68 | |
9cffb111 OS |
69 | #ifdef __Lynx__ |
70 | /* Missing protos on LynxOS */ | |
71 | void setruid(uid_t id); | |
72 | void seteuid(uid_t id); | |
73 | void setrgid(uid_t id); | |
74 | void setegid(uid_t id); | |
75 | #endif | |
76 | ||
c07a80fd | 77 | /* |
78 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
79 | */ | |
80 | ||
81 | struct magic_state { | |
82 | SV* mgs_sv; | |
83 | U32 mgs_flags; | |
455ece5e | 84 | I32 mgs_ss_ix; |
c07a80fd | 85 | }; |
455ece5e | 86 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
87 | |
88 | STATIC void | |
8fb26106 | 89 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 90 | { |
455ece5e | 91 | MGS* mgs; |
c07a80fd | 92 | assert(SvMAGICAL(sv)); |
765f542d NC |
93 | #ifdef PERL_COPY_ON_WRITE |
94 | /* Turning READONLY off for a copy-on-write scalar is a bad idea. */ | |
95 | if (SvIsCOW(sv)) | |
96 | sv_force_normal(sv); | |
97 | #endif | |
c07a80fd | 98 | |
685f876f | 99 | SAVEDESTRUCTOR_X(restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
100 | |
101 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 102 | mgs->mgs_sv = sv; |
103 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 104 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 105 | |
106 | SvMAGICAL_off(sv); | |
107 | SvREADONLY_off(sv); | |
06759ea0 | 108 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd | 109 | } |
110 | ||
954c1994 GS |
111 | /* |
112 | =for apidoc mg_magical | |
113 | ||
114 | Turns on the magical status of an SV. See C<sv_magic>. | |
115 | ||
116 | =cut | |
117 | */ | |
118 | ||
8990e307 | 119 | void |
864dbfa3 | 120 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 121 | { |
e1ec3a88 | 122 | const MAGIC* mg; |
8990e307 | 123 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 124 | const MGVTBL* const vtbl = mg->mg_virtual; |
8990e307 | 125 | if (vtbl) { |
2b260de0 | 126 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
127 | SvGMAGICAL_on(sv); |
128 | if (vtbl->svt_set) | |
129 | SvSMAGICAL_on(sv); | |
2b260de0 | 130 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
131 | SvRMAGICAL_on(sv); |
132 | } | |
133 | } | |
134 | } | |
135 | ||
954c1994 GS |
136 | /* |
137 | =for apidoc mg_get | |
138 | ||
139 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
140 | ||
141 | =cut | |
142 | */ | |
143 | ||
79072805 | 144 | int |
864dbfa3 | 145 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 146 | { |
35a4481c AL |
147 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
148 | const bool was_temp = SvTEMP(sv); | |
ff76feab AMS |
149 | int new = 0; |
150 | MAGIC *newmg, *head, *cur, *mg; | |
20135930 | 151 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
152 | reference. */ |
153 | ||
154 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can | |
155 | cause the SV's buffer to get stolen (and maybe other stuff). | |
156 | So restore it. | |
157 | */ | |
158 | sv_2mortal(SvREFCNT_inc(sv)); | |
159 | if (!was_temp) { | |
160 | SvTEMP_off(sv); | |
161 | } | |
162 | ||
455ece5e | 163 | save_magic(mgs_ix, sv); |
463ee0b2 | 164 | |
ff76feab AMS |
165 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
166 | list of magic. svt_get() may delete the current entry, add new | |
167 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
168 | ||
169 | newmg = cur = head = mg = SvMAGIC(sv); | |
170 | while (mg) { | |
35a4481c | 171 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab | 172 | |
2b260de0 | 173 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 174 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 175 | |
58f82c5c DM |
176 | /* guard against magic having been deleted - eg FETCH calling |
177 | * untie */ | |
178 | if (!SvMAGIC(sv)) | |
179 | break; | |
b77f7d40 | 180 | |
ff76feab AMS |
181 | /* Don't restore the flags for this entry if it was deleted. */ |
182 | if (mg->mg_flags & MGf_GSKIP) | |
183 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 184 | } |
ff76feab AMS |
185 | |
186 | mg = mg->mg_moremagic; | |
187 | ||
188 | if (new) { | |
189 | /* Have we finished with the new entries we saw? Start again | |
190 | where we left off (unless there are more new entries). */ | |
191 | if (mg == head) { | |
192 | new = 0; | |
193 | mg = cur; | |
194 | head = newmg; | |
195 | } | |
196 | } | |
197 | ||
198 | /* Were any new entries added? */ | |
199 | if (!new && (newmg = SvMAGIC(sv)) != head) { | |
200 | new = 1; | |
201 | cur = mg; | |
202 | mg = newmg; | |
760ac839 | 203 | } |
79072805 | 204 | } |
463ee0b2 | 205 | |
acfe0abc | 206 | restore_magic(aTHX_ INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
207 | |
208 | if (SvREFCNT(sv) == 1) { | |
209 | /* We hold the last reference to this SV, which implies that the | |
210 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 211 | SvOK_off(sv); |
6683b158 | 212 | } |
79072805 LW |
213 | return 0; |
214 | } | |
215 | ||
954c1994 GS |
216 | /* |
217 | =for apidoc mg_set | |
218 | ||
219 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
220 | ||
221 | =cut | |
222 | */ | |
223 | ||
79072805 | 224 | int |
864dbfa3 | 225 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 226 | { |
35a4481c | 227 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 228 | MAGIC* mg; |
463ee0b2 LW |
229 | MAGIC* nextmg; |
230 | ||
455ece5e | 231 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
232 | |
233 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 234 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 235 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
236 | if (mg->mg_flags & MGf_GSKIP) { |
237 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 238 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 239 | } |
2b260de0 | 240 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 241 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 242 | } |
463ee0b2 | 243 | |
acfe0abc | 244 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
245 | return 0; |
246 | } | |
247 | ||
954c1994 GS |
248 | /* |
249 | =for apidoc mg_length | |
250 | ||
251 | Report on the SV's length. See C<sv_magic>. | |
252 | ||
253 | =cut | |
254 | */ | |
255 | ||
79072805 | 256 | U32 |
864dbfa3 | 257 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
258 | { |
259 | MAGIC* mg; | |
463ee0b2 | 260 | STRLEN len; |
463ee0b2 | 261 | |
79072805 | 262 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 263 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 264 | if (vtbl && vtbl->svt_len) { |
35a4481c | 265 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 266 | save_magic(mgs_ix, sv); |
a0d0e21e | 267 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 268 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 269 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
270 | return len; |
271 | } | |
272 | } | |
273 | ||
35a4481c | 274 | if (DO_UTF8(sv)) { |
5636d518 DB |
275 | U8 *s = (U8*)SvPV(sv, len); |
276 | len = Perl_utf8_length(aTHX_ s, s + len); | |
277 | } | |
278 | else | |
279 | (void)SvPV(sv, len); | |
463ee0b2 | 280 | return len; |
79072805 LW |
281 | } |
282 | ||
8fb26106 | 283 | I32 |
864dbfa3 | 284 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
285 | { |
286 | MAGIC* mg; | |
ac27b0f5 | 287 | |
93965878 | 288 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 289 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 290 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
291 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
292 | I32 len; | |
455ece5e | 293 | save_magic(mgs_ix, sv); |
93965878 | 294 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 295 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 296 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
297 | return len; |
298 | } | |
299 | } | |
300 | ||
301 | switch(SvTYPE(sv)) { | |
302 | case SVt_PVAV: | |
35a4481c | 303 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
304 | case SVt_PVHV: |
305 | /* FIXME */ | |
306 | default: | |
cea2e8a9 | 307 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
308 | break; |
309 | } | |
310 | return 0; | |
311 | } | |
312 | ||
954c1994 GS |
313 | /* |
314 | =for apidoc mg_clear | |
315 | ||
316 | Clear something magical that the SV represents. See C<sv_magic>. | |
317 | ||
318 | =cut | |
319 | */ | |
320 | ||
79072805 | 321 | int |
864dbfa3 | 322 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 323 | { |
35a4481c | 324 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 325 | MAGIC* mg; |
463ee0b2 | 326 | |
455ece5e | 327 | save_magic(mgs_ix, sv); |
463ee0b2 | 328 | |
79072805 | 329 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 330 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 331 | /* omit GSKIP -- never set here */ |
727405f8 | 332 | |
2b260de0 | 333 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 334 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 335 | } |
463ee0b2 | 336 | |
acfe0abc | 337 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
338 | return 0; |
339 | } | |
340 | ||
954c1994 GS |
341 | /* |
342 | =for apidoc mg_find | |
343 | ||
344 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
345 | ||
346 | =cut | |
347 | */ | |
348 | ||
93a17b20 | 349 | MAGIC* |
35a4481c | 350 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 351 | { |
35a4481c AL |
352 | if (sv) { |
353 | MAGIC *mg; | |
354 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
355 | if (mg->mg_type == type) | |
356 | return mg; | |
357 | } | |
93a17b20 LW |
358 | } |
359 | return 0; | |
360 | } | |
361 | ||
954c1994 GS |
362 | /* |
363 | =for apidoc mg_copy | |
364 | ||
365 | Copies the magic from one SV to another. See C<sv_magic>. | |
366 | ||
367 | =cut | |
368 | */ | |
369 | ||
79072805 | 370 | int |
864dbfa3 | 371 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 372 | { |
463ee0b2 | 373 | int count = 0; |
79072805 | 374 | MAGIC* mg; |
463ee0b2 | 375 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 376 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
377 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
378 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
379 | } | |
380 | else if (isUPPER(mg->mg_type)) { | |
33c27489 | 381 | sv_magic(nsv, |
14befaf4 DM |
382 | mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) : |
383 | (mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj) | |
384 | ? sv : mg->mg_obj, | |
33c27489 | 385 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 386 | count++; |
79072805 | 387 | } |
79072805 | 388 | } |
463ee0b2 | 389 | return count; |
79072805 LW |
390 | } |
391 | ||
954c1994 GS |
392 | /* |
393 | =for apidoc mg_free | |
394 | ||
395 | Free any magic storage used by the SV. See C<sv_magic>. | |
396 | ||
397 | =cut | |
398 | */ | |
399 | ||
79072805 | 400 | int |
864dbfa3 | 401 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
402 | { |
403 | MAGIC* mg; | |
404 | MAGIC* moremagic; | |
405 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
35a4481c | 406 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 407 | moremagic = mg->mg_moremagic; |
2b260de0 | 408 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 409 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 410 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 411 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 412 | Safefree(mg->mg_ptr); |
565764a8 | 413 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 414 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 415 | } |
b881518d JH |
416 | if (mg->mg_flags & MGf_REFCOUNTED) |
417 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
418 | Safefree(mg); |
419 | } | |
420 | SvMAGIC(sv) = 0; | |
421 | return 0; | |
422 | } | |
423 | ||
79072805 | 424 | #include <signal.h> |
79072805 | 425 | |
942e002e | 426 | U32 |
864dbfa3 | 427 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 428 | { |
35a4481c | 429 | register const REGEXP *rx; |
6cef1e77 | 430 | |
aaa362c4 | 431 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
8f580fb8 IZ |
432 | if (mg->mg_obj) /* @+ */ |
433 | return rx->nparens; | |
434 | else /* @- */ | |
435 | return rx->lastparen; | |
436 | } | |
ac27b0f5 | 437 | |
942e002e | 438 | return (U32)-1; |
6cef1e77 IZ |
439 | } |
440 | ||
441 | int | |
864dbfa3 | 442 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 443 | { |
6cef1e77 | 444 | register REGEXP *rx; |
6cef1e77 | 445 | |
aaa362c4 | 446 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
35a4481c AL |
447 | register const I32 paren = mg->mg_len; |
448 | register I32 s; | |
449 | register I32 t; | |
6cef1e77 IZ |
450 | if (paren < 0) |
451 | return 0; | |
eb160463 | 452 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
453 | (s = rx->startp[paren]) != -1 && |
454 | (t = rx->endp[paren]) != -1) | |
6cef1e77 | 455 | { |
35a4481c | 456 | register I32 i; |
6cef1e77 | 457 | if (mg->mg_obj) /* @+ */ |
cf93c79d | 458 | i = t; |
6cef1e77 | 459 | else /* @- */ |
cf93c79d | 460 | i = s; |
727405f8 | 461 | |
a30b2f1f | 462 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
1aa99e6b | 463 | char *b = rx->subbeg; |
0064a8a9 JH |
464 | if (b) |
465 | i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i)); | |
1aa99e6b | 466 | } |
0064a8a9 JH |
467 | |
468 | sv_setiv(sv, i); | |
6cef1e77 IZ |
469 | } |
470 | } | |
471 | return 0; | |
472 | } | |
473 | ||
e4b89193 | 474 | int |
a29d06ed MG |
475 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
476 | { | |
a29d06ed | 477 | Perl_croak(aTHX_ PL_no_modify); |
e4b89193 | 478 | /* NOT REACHED */ |
73d840c0 | 479 | (void)sv; (void)mg; |
e4b89193 | 480 | return 0; |
a29d06ed MG |
481 | } |
482 | ||
93a17b20 | 483 | U32 |
864dbfa3 | 484 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 LW |
485 | { |
486 | register I32 paren; | |
93a17b20 | 487 | register I32 i; |
d9f97599 | 488 | register REGEXP *rx; |
a197cbdd | 489 | I32 s1, t1; |
93a17b20 LW |
490 | |
491 | switch (*mg->mg_ptr) { | |
492 | case '1': case '2': case '3': case '4': | |
493 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 494 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 495 | |
ffc61ed2 | 496 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 497 | getparen: |
eb160463 | 498 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
499 | (s1 = rx->startp[paren]) != -1 && |
500 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 501 | { |
cf93c79d | 502 | i = t1 - s1; |
a197cbdd | 503 | getlen: |
a30b2f1f | 504 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
ffc61ed2 | 505 | char *s = rx->subbeg + s1; |
a197cbdd | 506 | char *send = rx->subbeg + t1; |
ffc61ed2 | 507 | |
6d5fa195 | 508 | i = t1 - s1; |
60425c38 JH |
509 | if (is_utf8_string((U8*)s, i)) |
510 | i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send); | |
a197cbdd | 511 | } |
ffc61ed2 | 512 | if (i < 0) |
0844c848 | 513 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 514 | return i; |
93a17b20 | 515 | } |
235bddc8 NIS |
516 | else { |
517 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 518 | report_uninit(sv); |
235bddc8 NIS |
519 | } |
520 | } | |
521 | else { | |
522 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 523 | report_uninit(sv); |
93a17b20 | 524 | } |
748a9306 | 525 | return 0; |
93a17b20 | 526 | case '+': |
aaa362c4 | 527 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 528 | paren = rx->lastparen; |
13f57bf8 CS |
529 | if (paren) |
530 | goto getparen; | |
93a17b20 | 531 | } |
748a9306 | 532 | return 0; |
a01268b5 JH |
533 | case '\016': /* ^N */ |
534 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
535 | paren = rx->lastcloseparen; | |
536 | if (paren) | |
537 | goto getparen; | |
538 | } | |
539 | return 0; | |
93a17b20 | 540 | case '`': |
aaa362c4 | 541 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
542 | if (rx->startp[0] != -1) { |
543 | i = rx->startp[0]; | |
a197cbdd GS |
544 | if (i > 0) { |
545 | s1 = 0; | |
546 | t1 = i; | |
547 | goto getlen; | |
548 | } | |
93a17b20 | 549 | } |
93a17b20 | 550 | } |
748a9306 | 551 | return 0; |
93a17b20 | 552 | case '\'': |
aaa362c4 | 553 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
554 | if (rx->endp[0] != -1) { |
555 | i = rx->sublen - rx->endp[0]; | |
a197cbdd GS |
556 | if (i > 0) { |
557 | s1 = rx->endp[0]; | |
558 | t1 = rx->sublen; | |
559 | goto getlen; | |
560 | } | |
93a17b20 | 561 | } |
93a17b20 | 562 | } |
748a9306 | 563 | return 0; |
93a17b20 LW |
564 | } |
565 | magic_get(sv,mg); | |
2d8e6c8d GS |
566 | if (!SvPOK(sv) && SvNIOK(sv)) { |
567 | STRLEN n_a; | |
568 | sv_2pv(sv, &n_a); | |
569 | } | |
93a17b20 LW |
570 | if (SvPOK(sv)) |
571 | return SvCUR(sv); | |
572 | return 0; | |
573 | } | |
574 | ||
79072805 | 575 | int |
864dbfa3 | 576 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
577 | { |
578 | register I32 paren; | |
35272f84 | 579 | register char *s = NULL; |
79072805 | 580 | register I32 i; |
d9f97599 | 581 | register REGEXP *rx; |
79072805 LW |
582 | |
583 | switch (*mg->mg_ptr) { | |
748a9306 | 584 | case '\001': /* ^A */ |
3280af22 | 585 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 586 | break; |
49460fe6 NIS |
587 | case '\003': /* ^C */ |
588 | sv_setiv(sv, (IV)PL_minus_c); | |
589 | break; | |
590 | ||
79072805 | 591 | case '\004': /* ^D */ |
aea4f609 | 592 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 593 | break; |
28f23441 | 594 | case '\005': /* ^E */ |
0a378802 | 595 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 596 | #ifdef MACOS_TRADITIONAL |
0a378802 JH |
597 | { |
598 | char msg[256]; | |
727405f8 | 599 | |
0a378802 | 600 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 601 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 602 | } |
727405f8 | 603 | #else |
28f23441 | 604 | #ifdef VMS |
0a378802 JH |
605 | { |
606 | # include <descrip.h> | |
607 | # include <starlet.h> | |
608 | char msg[255]; | |
609 | $DESCRIPTOR(msgdsc,msg); | |
610 | sv_setnv(sv,(NV) vaxc$errno); | |
611 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
612 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
613 | else | |
614 | sv_setpv(sv,""); | |
615 | } | |
28f23441 | 616 | #else |
88e89b8a | 617 | #ifdef OS2 |
0a378802 JH |
618 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
619 | sv_setnv(sv, (NV)errno); | |
620 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
621 | } else { | |
622 | if (errno != errno_isOS2) { | |
623 | int tmp = _syserrno(); | |
624 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
625 | Perl_rc = tmp; | |
626 | } | |
627 | sv_setnv(sv, (NV)Perl_rc); | |
628 | sv_setpv(sv, os2error(Perl_rc)); | |
629 | } | |
88e89b8a | 630 | #else |
22fae026 | 631 | #ifdef WIN32 |
0a378802 JH |
632 | { |
633 | DWORD dwErr = GetLastError(); | |
634 | sv_setnv(sv, (NV)dwErr); | |
635 | if (dwErr) | |
636 | { | |
637 | PerlProc_GetOSError(sv, dwErr); | |
638 | } | |
639 | else | |
640 | sv_setpv(sv, ""); | |
641 | SetLastError(dwErr); | |
642 | } | |
22fae026 | 643 | #else |
f6c8f21d RGS |
644 | { |
645 | int saveerrno = errno; | |
646 | sv_setnv(sv, (NV)errno); | |
647 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
648 | errno = saveerrno; | |
649 | } | |
28f23441 | 650 | #endif |
88e89b8a | 651 | #endif |
22fae026 | 652 | #endif |
cd39f2b6 | 653 | #endif |
0a378802 JH |
654 | SvNOK_on(sv); /* what a wonderful hack! */ |
655 | } | |
656 | else if (strEQ(mg->mg_ptr+1, "NCODING")) | |
657 | sv_setsv(sv, PL_encoding); | |
658 | break; | |
79072805 | 659 | case '\006': /* ^F */ |
3280af22 | 660 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 661 | break; |
a0d0e21e | 662 | case '\010': /* ^H */ |
3280af22 | 663 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 664 | break; |
9d116dd7 | 665 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
666 | if (PL_inplace) |
667 | sv_setpv(sv, PL_inplace); | |
79072805 | 668 | else |
3280af22 | 669 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 670 | break; |
ac27b0f5 | 671 | case '\017': /* ^O & ^OPEN */ |
3511154c | 672 | if (*(mg->mg_ptr+1) == '\0') { |
ac27b0f5 | 673 | sv_setpv(sv, PL_osname); |
3511154c DM |
674 | SvTAINTED_off(sv); |
675 | } | |
ac27b0f5 NIS |
676 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
677 | if (!PL_compiling.cop_io) | |
678 | sv_setsv(sv, &PL_sv_undef); | |
679 | else { | |
680 | sv_setsv(sv, PL_compiling.cop_io); | |
681 | } | |
682 | } | |
28f23441 | 683 | break; |
79072805 | 684 | case '\020': /* ^P */ |
3280af22 | 685 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 686 | break; |
fb73857a | 687 | case '\023': /* ^S */ |
4ffa73a3 | 688 | if (*(mg->mg_ptr+1) == '\0') { |
3280af22 | 689 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 | 690 | SvOK_off(sv); |
3280af22 | 691 | else if (PL_in_eval) |
6dc8a9e4 | 692 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
693 | else |
694 | sv_setiv(sv, 0); | |
d58bf5aa | 695 | } |
fb73857a | 696 | break; |
79072805 | 697 | case '\024': /* ^T */ |
7c36658b | 698 | if (*(mg->mg_ptr+1) == '\0') { |
88e89b8a | 699 | #ifdef BIG_TIME |
7c36658b | 700 | sv_setnv(sv, PL_basetime); |
88e89b8a | 701 | #else |
7c36658b | 702 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 703 | #endif |
7c36658b MS |
704 | } |
705 | else if (strEQ(mg->mg_ptr, "\024AINT")) | |
9aa05f58 RGS |
706 | sv_setiv(sv, PL_tainting |
707 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
708 | : 0); | |
7c36658b | 709 | break; |
7cebcbc0 | 710 | case '\025': /* $^UNICODE, $^UTF8LOCALE */ |
a05d7ebb JH |
711 | if (strEQ(mg->mg_ptr, "\025NICODE")) |
712 | sv_setuv(sv, (UV) PL_unicode); | |
7cebcbc0 NC |
713 | else if (strEQ(mg->mg_ptr, "\025TF8LOCALE")) |
714 | sv_setuv(sv, (UV) PL_utf8locale); | |
fde18df1 JH |
715 | break; |
716 | case '\027': /* ^W & $^WARNING_BITS */ | |
4438c4b7 JH |
717 | if (*(mg->mg_ptr+1) == '\0') |
718 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
0a378802 | 719 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
d3a7d8c7 GS |
720 | if (PL_compiling.cop_warnings == pWARN_NONE || |
721 | PL_compiling.cop_warnings == pWARN_STD) | |
4438c4b7 JH |
722 | { |
723 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
724 | } | |
d3a7d8c7 | 725 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
726 | /* Get the bit mask for $warnings::Bits{all}, because |
727 | * it could have been extended by warnings::register */ | |
728 | SV **bits_all; | |
729 | HV *bits=get_hv("warnings::Bits", FALSE); | |
730 | if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) { | |
731 | sv_setsv(sv, *bits_all); | |
732 | } | |
733 | else { | |
734 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
735 | } | |
ac27b0f5 | 736 | } |
4438c4b7 JH |
737 | else { |
738 | sv_setsv(sv, PL_compiling.cop_warnings); | |
ac27b0f5 | 739 | } |
d3a7d8c7 | 740 | SvPOK_only(sv); |
4438c4b7 | 741 | } |
79072805 LW |
742 | break; |
743 | case '1': case '2': case '3': case '4': | |
744 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 745 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
746 | I32 s1, t1; |
747 | ||
a863c7d1 MB |
748 | /* |
749 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
750 | * XXX Does the new way break anything? | |
751 | */ | |
ffc61ed2 | 752 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 | 753 | getparen: |
eb160463 | 754 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
755 | (s1 = rx->startp[paren]) != -1 && |
756 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 757 | { |
cf93c79d IZ |
758 | i = t1 - s1; |
759 | s = rx->subbeg + s1; | |
01ec43d0 | 760 | if (!rx->subbeg) |
c2e66d9e GS |
761 | break; |
762 | ||
13f57bf8 | 763 | getrx: |
748a9306 | 764 | if (i >= 0) { |
cf93c79d | 765 | sv_setpvn(sv, s, i); |
a30b2f1f | 766 | if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i)) |
7e2040f0 GS |
767 | SvUTF8_on(sv); |
768 | else | |
769 | SvUTF8_off(sv); | |
e9814ee1 HS |
770 | if (PL_tainting) { |
771 | if (RX_MATCH_TAINTED(rx)) { | |
772 | MAGIC* mg = SvMAGIC(sv); | |
773 | MAGIC* mgt; | |
774 | PL_tainted = 1; | |
775 | SvMAGIC(sv) = mg->mg_moremagic; | |
776 | SvTAINT(sv); | |
777 | if ((mgt = SvMAGIC(sv))) { | |
778 | mg->mg_moremagic = mgt; | |
779 | SvMAGIC(sv) = mg; | |
780 | } | |
781 | } else | |
782 | SvTAINTED_off(sv); | |
783 | } | |
748a9306 LW |
784 | break; |
785 | } | |
79072805 | 786 | } |
79072805 | 787 | } |
3280af22 | 788 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
789 | break; |
790 | case '+': | |
aaa362c4 | 791 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 792 | paren = rx->lastparen; |
a0d0e21e LW |
793 | if (paren) |
794 | goto getparen; | |
79072805 | 795 | } |
3280af22 | 796 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 797 | break; |
a01268b5 JH |
798 | case '\016': /* ^N */ |
799 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
800 | paren = rx->lastcloseparen; | |
801 | if (paren) | |
802 | goto getparen; | |
803 | } | |
804 | sv_setsv(sv,&PL_sv_undef); | |
805 | break; | |
79072805 | 806 | case '`': |
aaa362c4 | 807 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
808 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
809 | i = rx->startp[0]; | |
13f57bf8 | 810 | goto getrx; |
79072805 | 811 | } |
79072805 | 812 | } |
3280af22 | 813 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
814 | break; |
815 | case '\'': | |
aaa362c4 | 816 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
817 | if (rx->subbeg && rx->endp[0] != -1) { |
818 | s = rx->subbeg + rx->endp[0]; | |
819 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 820 | goto getrx; |
79072805 | 821 | } |
79072805 | 822 | } |
3280af22 | 823 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
824 | break; |
825 | case '.': | |
826 | #ifndef lint | |
3280af22 | 827 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 828 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 LW |
829 | } |
830 | #endif | |
831 | break; | |
832 | case '?': | |
809a5acc | 833 | { |
809a5acc | 834 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 835 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
836 | LvTARGOFF(sv) = PL_statusvalue; |
837 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 838 | #endif |
809a5acc | 839 | } |
79072805 LW |
840 | break; |
841 | case '^': | |
0daa599b RGS |
842 | if (GvIOp(PL_defoutgv)) |
843 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
844 | if (s) |
845 | sv_setpv(sv,s); | |
846 | else { | |
3280af22 | 847 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
848 | sv_catpv(sv,"_TOP"); |
849 | } | |
850 | break; | |
851 | case '~': | |
0daa599b RGS |
852 | if (GvIOp(PL_defoutgv)) |
853 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 854 | if (!s) |
3280af22 | 855 | s = GvENAME(PL_defoutgv); |
79072805 LW |
856 | sv_setpv(sv,s); |
857 | break; | |
858 | #ifndef lint | |
859 | case '=': | |
0daa599b RGS |
860 | if (GvIOp(PL_defoutgv)) |
861 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
862 | break; |
863 | case '-': | |
0daa599b RGS |
864 | if (GvIOp(PL_defoutgv)) |
865 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
866 | break; |
867 | case '%': | |
0daa599b RGS |
868 | if (GvIOp(PL_defoutgv)) |
869 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 LW |
870 | break; |
871 | #endif | |
872 | case ':': | |
873 | break; | |
874 | case '/': | |
875 | break; | |
876 | case '[': | |
3280af22 | 877 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
878 | break; |
879 | case '|': | |
0daa599b RGS |
880 | if (GvIOp(PL_defoutgv)) |
881 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
882 | break; |
883 | case ',': | |
79072805 LW |
884 | break; |
885 | case '\\': | |
b2ce0fda | 886 | if (PL_ors_sv) |
f28098ff | 887 | sv_copypv(sv, PL_ors_sv); |
79072805 LW |
888 | break; |
889 | case '#': | |
3280af22 | 890 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
891 | break; |
892 | case '!': | |
a5f75d66 | 893 | #ifdef VMS |
65202027 | 894 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 895 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 896 | #else |
88e89b8a | 897 | { |
898 | int saveerrno = errno; | |
65202027 | 899 | sv_setnv(sv, (NV)errno); |
88e89b8a | 900 | #ifdef OS2 |
ed344e4f IZ |
901 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
902 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 903 | else |
a5f75d66 | 904 | #endif |
2304df62 | 905 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 906 | errno = saveerrno; |
907 | } | |
908 | #endif | |
946ec16e | 909 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
910 | break; |
911 | case '<': | |
3280af22 | 912 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
913 | break; |
914 | case '>': | |
3280af22 | 915 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
916 | break; |
917 | case '(': | |
3280af22 | 918 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 919 | #ifdef HAS_GETGROUPS |
785fb66b | 920 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 921 | #endif |
79072805 LW |
922 | goto add_groups; |
923 | case ')': | |
3280af22 | 924 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 925 | #ifdef HAS_GETGROUPS |
785fb66b | 926 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 927 | #endif |
79072805 | 928 | add_groups: |
79072805 | 929 | #ifdef HAS_GETGROUPS |
79072805 | 930 | { |
a0d0e21e | 931 | Groups_t gary[NGROUPS]; |
79072805 | 932 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 933 | while (--i >= 0) |
785fb66b | 934 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
935 | } |
936 | #endif | |
155aba94 | 937 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 | 938 | break; |
cd39f2b6 | 939 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
940 | case '0': |
941 | break; | |
cd39f2b6 | 942 | #endif |
79072805 | 943 | } |
a0d0e21e | 944 | return 0; |
79072805 LW |
945 | } |
946 | ||
947 | int | |
864dbfa3 | 948 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
949 | { |
950 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
951 | ||
952 | if (uf && uf->uf_val) | |
24f81a43 | 953 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
954 | return 0; |
955 | } | |
956 | ||
957 | int | |
864dbfa3 | 958 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
959 | { |
960 | register char *s; | |
88e89b8a | 961 | char *ptr; |
5aabfad6 | 962 | STRLEN len, klen; |
1e422769 | 963 | |
a0d0e21e | 964 | s = SvPV(sv,len); |
5aabfad6 | 965 | ptr = MgPV(mg,klen); |
88e89b8a | 966 | my_setenv(ptr, s); |
1e422769 | 967 | |
a0d0e21e LW |
968 | #ifdef DYNAMIC_ENV_FETCH |
969 | /* We just undefd an environment var. Is a replacement */ | |
970 | /* waiting in the wings? */ | |
971 | if (!len) { | |
5aabfad6 | 972 | SV **valp; |
6b88bc9c | 973 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 974 | s = SvPV(*valp, len); |
a0d0e21e LW |
975 | } |
976 | #endif | |
1e422769 | 977 | |
39e571d4 | 978 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
979 | /* And you'll never guess what the dog had */ |
980 | /* in its mouth... */ | |
3280af22 | 981 | if (PL_tainting) { |
1e422769 | 982 | MgTAINTEDDIR_off(mg); |
983 | #ifdef VMS | |
5aabfad6 | 984 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 985 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
c623ac67 | 986 | Stat_t sbuf; |
1e422769 | 987 | int i = 0, j = 0; |
988 | ||
989 | do { /* DCL$PATH may be a search list */ | |
990 | while (1) { /* as may dev portion of any element */ | |
991 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
992 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
993 | cando_by_name(S_IWUSR,0,elt) ) { | |
994 | MgTAINTEDDIR_on(mg); | |
995 | return 0; | |
996 | } | |
997 | } | |
998 | if ((cp = strchr(elt, ':')) != Nullch) | |
999 | *cp = '\0'; | |
1000 | if (my_trnlnm(elt, eltbuf, j++)) | |
1001 | elt = eltbuf; | |
1002 | else | |
1003 | break; | |
1004 | } | |
1005 | j = 0; | |
1006 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1007 | } | |
1008 | #endif /* VMS */ | |
5aabfad6 | 1009 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 1010 | char *strend = s + len; |
463ee0b2 LW |
1011 | |
1012 | while (s < strend) { | |
96827780 | 1013 | char tmpbuf[256]; |
c623ac67 | 1014 | Stat_t st; |
5f74f29c | 1015 | I32 i; |
96827780 | 1016 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 1017 | s, strend, ':', &i); |
463ee0b2 | 1018 | s++; |
96827780 MB |
1019 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
1020 | || *tmpbuf != '/' | |
c6ed36e1 | 1021 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1022 | MgTAINTEDDIR_on(mg); |
1e422769 | 1023 | return 0; |
1024 | } | |
463ee0b2 | 1025 | } |
79072805 LW |
1026 | } |
1027 | } | |
39e571d4 | 1028 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1029 | |
79072805 LW |
1030 | return 0; |
1031 | } | |
1032 | ||
1033 | int | |
864dbfa3 | 1034 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1035 | { |
2d8e6c8d GS |
1036 | STRLEN n_a; |
1037 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
1038 | return 0; |
1039 | } | |
1040 | ||
88e89b8a | 1041 | int |
864dbfa3 | 1042 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1043 | { |
1044 | #if defined(VMS) | |
cea2e8a9 | 1045 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1046 | #else |
3280af22 | 1047 | if (PL_localizing) { |
fb73857a | 1048 | HE* entry; |
2d8e6c8d | 1049 | STRLEN n_a; |
fb73857a | 1050 | magic_clear_all_env(sv,mg); |
1051 | hv_iterinit((HV*)sv); | |
155aba94 | 1052 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1053 | I32 keylen; |
1054 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 1055 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 1056 | } |
1057 | } | |
1058 | #endif | |
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | int | |
864dbfa3 | 1063 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1064 | { |
2f42fcb0 | 1065 | #ifndef PERL_MICRO |
ed79a026 | 1066 | #if defined(VMS) || defined(EPOC) |
cea2e8a9 | 1067 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 1068 | #else |
4efc5df6 | 1069 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) |
7766f137 | 1070 | PerlEnv_clearenv(); |
4efc5df6 GS |
1071 | # else |
1072 | # ifdef USE_ENVIRON_ARRAY | |
1073 | # if defined(USE_ITHREADS) | |
1074 | /* only the parent thread can clobber the process environment */ | |
1075 | if (PL_curinterp == aTHX) | |
1076 | # endif | |
1077 | { | |
1078 | # ifndef PERL_USE_SAFE_PUTENV | |
50acdf95 | 1079 | if (!PL_use_safe_putenv) { |
66b1d557 HM |
1080 | I32 i; |
1081 | ||
3280af22 | 1082 | if (environ == PL_origenviron) |
f2517201 | 1083 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
1084 | else |
1085 | for (i = 0; environ[i]; i++) | |
f2517201 | 1086 | safesysfree(environ[i]); |
50acdf95 | 1087 | } |
4efc5df6 | 1088 | # endif /* PERL_USE_SAFE_PUTENV */ |
f2517201 | 1089 | |
66b1d557 | 1090 | environ[0] = Nullch; |
4efc5df6 GS |
1091 | } |
1092 | # endif /* USE_ENVIRON_ARRAY */ | |
052c2dc6 | 1093 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ |
2f42fcb0 JH |
1094 | #endif /* VMS || EPOC */ |
1095 | #endif /* !PERL_MICRO */ | |
3e3baf6d | 1096 | return 0; |
66b1d557 HM |
1097 | } |
1098 | ||
2e34cc90 CL |
1099 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1100 | static int sig_handlers_initted = 0; | |
1101 | #endif | |
7719e241 | 1102 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1103 | static int sig_ignoring[SIG_SIZE]; /* which signals we are ignoring */ |
1104 | #endif | |
2e34cc90 CL |
1105 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1106 | static int sig_defaulting[SIG_SIZE]; | |
1107 | #endif | |
85b332e2 | 1108 | |
64ca3a65 | 1109 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1110 | #ifdef HAS_SIGPROCMASK |
1111 | static void | |
1112 | restore_sigmask(pTHX_ SV *save_sv) | |
1113 | { | |
1114 | sigset_t *ossetp = (sigset_t *) SvPV_nolen( save_sv ); | |
1115 | (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0); | |
1116 | } | |
1117 | #endif | |
66b1d557 | 1118 | int |
864dbfa3 | 1119 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1120 | { |
1121 | I32 i; | |
2d8e6c8d | 1122 | STRLEN n_a; |
88e89b8a | 1123 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 1124 | i = whichsig(MgPV(mg,n_a)); |
e02bfb16 | 1125 | if (i > 0) { |
22c35a8c GS |
1126 | if(PL_psig_ptr[i]) |
1127 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1128 | else { |
85b332e2 | 1129 | Sighandler_t sigstate; |
2e34cc90 | 1130 | sigstate = rsignal_state(i); |
23ada85b | 1131 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
2e34cc90 CL |
1132 | if (sig_handlers_initted && sig_ignoring[i]) sigstate = SIG_IGN; |
1133 | #endif | |
1134 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1135 | if (sig_handlers_initted && sig_defaulting[i]) sigstate = SIG_DFL; | |
85b332e2 | 1136 | #endif |
88e89b8a | 1137 | /* cache state so we don't fetch it again */ |
ff68c719 | 1138 | if(sigstate == SIG_IGN) |
88e89b8a | 1139 | sv_setpv(sv,"IGNORE"); |
1140 | else | |
3280af22 | 1141 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 1142 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1143 | SvTEMP_off(sv); |
1144 | } | |
1145 | } | |
1146 | return 0; | |
1147 | } | |
1148 | int | |
864dbfa3 | 1149 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1150 | { |
2d4fcd5e AJ |
1151 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1152 | * refactoring might be in order. | |
1153 | */ | |
2d8e6c8d | 1154 | STRLEN n_a; |
2d4fcd5e | 1155 | SV* to_dec; |
35a4481c | 1156 | register const char *s = MgPV(mg,n_a); |
2d4fcd5e AJ |
1157 | if (*s == '_') { |
1158 | SV** svp; | |
1159 | if (strEQ(s,"__DIE__")) | |
1160 | svp = &PL_diehook; | |
1161 | else if (strEQ(s,"__WARN__")) | |
1162 | svp = &PL_warnhook; | |
1163 | else | |
1164 | Perl_croak(aTHX_ "No such hook: %s", s); | |
1165 | if (*svp) { | |
1166 | to_dec = *svp; | |
1167 | *svp = 0; | |
1168 | SvREFCNT_dec(to_dec); | |
1169 | } | |
1170 | } | |
1171 | else { | |
1172 | I32 i; | |
1173 | /* Are we clearing a signal entry? */ | |
1174 | i = whichsig(s); | |
e02bfb16 | 1175 | if (i > 0) { |
2d4fcd5e AJ |
1176 | #ifdef HAS_SIGPROCMASK |
1177 | sigset_t set, save; | |
1178 | SV* save_sv; | |
1179 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1180 | sigemptyset(&set); | |
1181 | sigaddset(&set,i); | |
1182 | sigprocmask(SIG_BLOCK, &set, &save); | |
1183 | ENTER; | |
1184 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1185 | SAVEFREESV(save_sv); | |
1186 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1187 | #endif | |
1188 | PERL_ASYNC_CHECK(); | |
1189 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
1190 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1191 | #endif | |
1192 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1193 | sig_defaulting[i] = 1; | |
5c1546dc | 1194 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1195 | #else |
1196 | (void)rsignal(i, SIG_DFL); | |
1197 | #endif | |
1198 | if(PL_psig_name[i]) { | |
1199 | SvREFCNT_dec(PL_psig_name[i]); | |
1200 | PL_psig_name[i]=0; | |
1201 | } | |
1202 | if(PL_psig_ptr[i]) { | |
1203 | to_dec=PL_psig_ptr[i]; | |
1204 | PL_psig_ptr[i]=0; | |
1205 | LEAVE; | |
1206 | SvREFCNT_dec(to_dec); | |
1207 | } | |
1208 | else | |
1209 | LEAVE; | |
1210 | } | |
88e89b8a | 1211 | } |
1212 | return 0; | |
1213 | } | |
3d37d572 | 1214 | |
0a8e0eff NIS |
1215 | void |
1216 | Perl_raise_signal(pTHX_ int sig) | |
1217 | { | |
1218 | /* Set a flag to say this signal is pending */ | |
1219 | PL_psig_pend[sig]++; | |
1220 | /* And one to say _a_ signal is pending */ | |
1221 | PL_sig_pending = 1; | |
1222 | } | |
1223 | ||
1224 | Signal_t | |
1225 | Perl_csighandler(int sig) | |
1226 | { | |
1018e26f NIS |
1227 | #ifdef PERL_GET_SIG_CONTEXT |
1228 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1229 | #else | |
85b332e2 CL |
1230 | dTHX; |
1231 | #endif | |
23ada85b | 1232 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1233 | (void) rsignal(sig, PL_csighandlerp); |
85b332e2 CL |
1234 | if (sig_ignoring[sig]) return; |
1235 | #endif | |
2e34cc90 | 1236 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
7719e241 | 1237 | if (sig_defaulting[sig]) |
2e34cc90 CL |
1238 | #ifdef KILL_BY_SIGPRC |
1239 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1240 | #else | |
1241 | exit(1); | |
1242 | #endif | |
1243 | #endif | |
4ffa73a3 JH |
1244 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
1245 | /* Call the perl level handler now-- | |
1246 | * with risk we may be in malloc() etc. */ | |
1247 | (*PL_sighandlerp)(sig); | |
1248 | else | |
1249 | Perl_raise_signal(aTHX_ sig); | |
0a8e0eff NIS |
1250 | } |
1251 | ||
2e34cc90 CL |
1252 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1253 | void | |
1254 | Perl_csighandler_init(void) | |
1255 | { | |
1256 | int sig; | |
1257 | if (sig_handlers_initted) return; | |
1258 | ||
1259 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1260 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1261 | dTHX; |
2e34cc90 | 1262 | sig_defaulting[sig] = 1; |
5c1546dc | 1263 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1264 | #endif |
1265 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
1266 | sig_ignoring[sig] = 0; | |
1267 | #endif | |
1268 | } | |
1269 | sig_handlers_initted = 1; | |
1270 | } | |
1271 | #endif | |
1272 | ||
0a8e0eff NIS |
1273 | void |
1274 | Perl_despatch_signals(pTHX) | |
1275 | { | |
1276 | int sig; | |
1277 | PL_sig_pending = 0; | |
1278 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1279 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1280 | PERL_BLOCKSIG_ADD(set, sig); |
1281 | PL_psig_pend[sig] = 0; | |
1282 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1283 | (*PL_sighandlerp)(sig); |
25da4428 | 1284 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1285 | } |
1286 | } | |
1287 | } | |
1288 | ||
85e6fe83 | 1289 | int |
864dbfa3 | 1290 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1291 | { |
79072805 | 1292 | I32 i; |
b7953727 | 1293 | SV** svp = 0; |
2d4fcd5e AJ |
1294 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1295 | * effects (due to closures). We must make sure that the new disposition | |
1296 | * is in place before it is called. | |
1297 | */ | |
1298 | SV* to_dec = 0; | |
e72dc28c | 1299 | STRLEN len; |
2d4fcd5e AJ |
1300 | #ifdef HAS_SIGPROCMASK |
1301 | sigset_t set, save; | |
1302 | SV* save_sv; | |
1303 | #endif | |
a0d0e21e | 1304 | |
35a4481c | 1305 | register const char *s = MgPV(mg,len); |
748a9306 LW |
1306 | if (*s == '_') { |
1307 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1308 | svp = &PL_diehook; |
748a9306 | 1309 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1310 | svp = &PL_warnhook; |
748a9306 | 1311 | else |
cea2e8a9 | 1312 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1313 | i = 0; |
4633a7c4 | 1314 | if (*svp) { |
2d4fcd5e | 1315 | to_dec = *svp; |
4633a7c4 LW |
1316 | *svp = 0; |
1317 | } | |
748a9306 LW |
1318 | } |
1319 | else { | |
1320 | i = whichsig(s); /* ...no, a brick */ | |
e02bfb16 | 1321 | if (i < 0) { |
e476b1b5 | 1322 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1323 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1324 | return 0; |
1325 | } | |
2d4fcd5e AJ |
1326 | #ifdef HAS_SIGPROCMASK |
1327 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1328 | sigemptyset(&set); | |
1329 | sigaddset(&set,i); | |
1330 | sigprocmask(SIG_BLOCK, &set, &save); | |
1331 | ENTER; | |
1332 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1333 | SAVEFREESV(save_sv); | |
1334 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1335 | #endif | |
1336 | PERL_ASYNC_CHECK(); | |
2e34cc90 CL |
1337 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1338 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1339 | #endif | |
23ada85b | 1340 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1341 | sig_ignoring[i] = 0; |
1342 | #endif | |
2e34cc90 | 1343 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
2d4fcd5e | 1344 | sig_defaulting[i] = 0; |
2e34cc90 | 1345 | #endif |
22c35a8c | 1346 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1347 | to_dec = PL_psig_ptr[i]; |
22c35a8c | 1348 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1349 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1350 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1351 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1352 | } |
a0d0e21e | 1353 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1354 | if (i) { |
5c1546dc | 1355 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1356 | #ifdef HAS_SIGPROCMASK |
1357 | LEAVE; | |
1358 | #endif | |
1359 | } | |
748a9306 LW |
1360 | else |
1361 | *svp = SvREFCNT_inc(sv); | |
2d4fcd5e AJ |
1362 | if(to_dec) |
1363 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1364 | return 0; |
1365 | } | |
e72dc28c | 1366 | s = SvPV_force(sv,len); |
748a9306 | 1367 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1368 | if (i) { |
23ada85b | 1369 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 | 1370 | sig_ignoring[i] = 1; |
5c1546dc | 1371 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1372 | #else |
ff68c719 | 1373 | (void)rsignal(i, SIG_IGN); |
85b332e2 | 1374 | #endif |
2d4fcd5e | 1375 | } |
748a9306 LW |
1376 | } |
1377 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1378 | if (i) | |
2e34cc90 CL |
1379 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1380 | { | |
1381 | sig_defaulting[i] = 1; | |
5c1546dc | 1382 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1383 | } |
1384 | #else | |
ff68c719 | 1385 | (void)rsignal(i, SIG_DFL); |
2e34cc90 | 1386 | #endif |
748a9306 | 1387 | } |
79072805 | 1388 | else { |
5aabfad6 | 1389 | /* |
1390 | * We should warn if HINT_STRICT_REFS, but without | |
1391 | * access to a known hint bit in a known OP, we can't | |
1392 | * tell whether HINT_STRICT_REFS is in force or not. | |
1393 | */ | |
46fc3d4c | 1394 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 1395 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 1396 | if (i) |
5c1546dc | 1397 | (void)rsignal(i, PL_csighandlerp); |
748a9306 LW |
1398 | else |
1399 | *svp = SvREFCNT_inc(sv); | |
79072805 | 1400 | } |
2d4fcd5e AJ |
1401 | #ifdef HAS_SIGPROCMASK |
1402 | if(i) | |
1403 | LEAVE; | |
1404 | #endif | |
1405 | if(to_dec) | |
1406 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1407 | return 0; |
1408 | } | |
64ca3a65 | 1409 | #endif /* !PERL_MICRO */ |
79072805 LW |
1410 | |
1411 | int | |
864dbfa3 | 1412 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1413 | { |
3280af22 | 1414 | PL_sub_generation++; |
463ee0b2 LW |
1415 | return 0; |
1416 | } | |
1417 | ||
1418 | int | |
864dbfa3 | 1419 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1420 | { |
a0d0e21e | 1421 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1422 | PL_amagic_generation++; |
463ee0b2 | 1423 | |
a0d0e21e LW |
1424 | return 0; |
1425 | } | |
463ee0b2 | 1426 | |
946ec16e | 1427 | int |
864dbfa3 | 1428 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1429 | { |
1430 | HV *hv = (HV*)LvTARG(sv); | |
6ff81951 | 1431 | I32 i = 0; |
7719e241 | 1432 | |
6ff81951 | 1433 | if (hv) { |
497b47a8 JH |
1434 | (void) hv_iterinit(hv); |
1435 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1436 | i = HvKEYS(hv); | |
1437 | else { | |
1438 | while (hv_iternext(hv)) | |
1439 | i++; | |
1440 | } | |
6ff81951 GS |
1441 | } |
1442 | ||
1443 | sv_setiv(sv, (IV)i); | |
1444 | return 0; | |
1445 | } | |
1446 | ||
1447 | int | |
864dbfa3 | 1448 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1449 | { |
1450 | if (LvTARG(sv)) { | |
1451 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1452 | } |
1453 | return 0; | |
ac27b0f5 | 1454 | } |
946ec16e | 1455 | |
e336de0d | 1456 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1457 | STATIC int |
e1ec3a88 | 1458 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1459 | { |
1460 | dSP; | |
463ee0b2 | 1461 | |
924508f0 GS |
1462 | PUSHMARK(SP); |
1463 | EXTEND(SP, n); | |
33c27489 | 1464 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1465 | if (n > 1) { |
93965878 | 1466 | if (mg->mg_ptr) { |
565764a8 | 1467 | if (mg->mg_len >= 0) |
79cb57f6 | 1468 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1469 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1470 | PUSHs((SV*)mg->mg_ptr); |
1471 | } | |
14befaf4 | 1472 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1473 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1474 | } |
1475 | } | |
1476 | if (n > 2) { | |
1477 | PUSHs(val); | |
88e89b8a | 1478 | } |
463ee0b2 LW |
1479 | PUTBACK; |
1480 | ||
864dbfa3 | 1481 | return call_method(meth, flags); |
946ec16e | 1482 | } |
1483 | ||
76e3520e | 1484 | STATIC int |
e1ec3a88 | 1485 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e LW |
1486 | { |
1487 | dSP; | |
463ee0b2 | 1488 | |
a0d0e21e LW |
1489 | ENTER; |
1490 | SAVETMPS; | |
e788e7d3 | 1491 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1492 | |
33c27489 | 1493 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1494 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1495 | } |
463ee0b2 | 1496 | |
d3acc0f7 | 1497 | POPSTACK; |
a0d0e21e LW |
1498 | FREETMPS; |
1499 | LEAVE; | |
1500 | return 0; | |
1501 | } | |
463ee0b2 | 1502 | |
a0d0e21e | 1503 | int |
864dbfa3 | 1504 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1505 | { |
a0d0e21e LW |
1506 | if (mg->mg_ptr) |
1507 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1508 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1509 | return 0; |
1510 | } | |
1511 | ||
1512 | int | |
864dbfa3 | 1513 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1514 | { |
1515 | dSP; | |
a60c0954 | 1516 | ENTER; |
e788e7d3 | 1517 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1518 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1519 | POPSTACK; |
a60c0954 | 1520 | LEAVE; |
463ee0b2 LW |
1521 | return 0; |
1522 | } | |
1523 | ||
1524 | int | |
864dbfa3 | 1525 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1526 | { |
a0d0e21e LW |
1527 | return magic_methpack(sv,mg,"DELETE"); |
1528 | } | |
463ee0b2 | 1529 | |
93965878 NIS |
1530 | |
1531 | U32 | |
864dbfa3 | 1532 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1533 | { |
e336de0d | 1534 | dSP; |
93965878 NIS |
1535 | U32 retval = 0; |
1536 | ||
1537 | ENTER; | |
1538 | SAVETMPS; | |
e788e7d3 | 1539 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1540 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1541 | sv = *PL_stack_sp--; |
a60c0954 | 1542 | retval = (U32) SvIV(sv)-1; |
93965878 | 1543 | } |
d3acc0f7 | 1544 | POPSTACK; |
93965878 NIS |
1545 | FREETMPS; |
1546 | LEAVE; | |
1547 | return retval; | |
1548 | } | |
1549 | ||
cea2e8a9 GS |
1550 | int |
1551 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1552 | { |
1553 | dSP; | |
463ee0b2 | 1554 | |
e336de0d | 1555 | ENTER; |
e788e7d3 | 1556 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1557 | PUSHMARK(SP); |
33c27489 | 1558 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1559 | PUTBACK; |
864dbfa3 | 1560 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1561 | POPSTACK; |
a60c0954 | 1562 | LEAVE; |
a3bcc51e | 1563 | |
463ee0b2 LW |
1564 | return 0; |
1565 | } | |
1566 | ||
1567 | int | |
864dbfa3 | 1568 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1569 | { |
463ee0b2 | 1570 | dSP; |
35a4481c | 1571 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1572 | |
1573 | ENTER; | |
a0d0e21e | 1574 | SAVETMPS; |
e788e7d3 | 1575 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1576 | PUSHMARK(SP); |
1577 | EXTEND(SP, 2); | |
33c27489 | 1578 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1579 | if (SvOK(key)) |
1580 | PUSHs(key); | |
1581 | PUTBACK; | |
1582 | ||
864dbfa3 | 1583 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1584 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1585 | |
d3acc0f7 | 1586 | POPSTACK; |
a0d0e21e LW |
1587 | FREETMPS; |
1588 | LEAVE; | |
79072805 LW |
1589 | return 0; |
1590 | } | |
1591 | ||
1592 | int | |
864dbfa3 | 1593 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1594 | { |
1595 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1596 | } |
a0d0e21e | 1597 | |
a3bcc51e TP |
1598 | SV * |
1599 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1600 | { | |
1601 | dSP; | |
1602 | SV *retval = &PL_sv_undef; | |
1603 | SV *tied = SvTIED_obj((SV*)hv, mg); | |
1604 | HV *pkg = SvSTASH((SV*)SvRV(tied)); | |
1605 | ||
1606 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1607 | SV *key; | |
1608 | if (HvEITER(hv)) | |
1609 | /* we are in an iteration so the hash cannot be empty */ | |
1610 | return &PL_sv_yes; | |
1611 | /* no xhv_eiter so now use FIRSTKEY */ | |
1612 | key = sv_newmortal(); | |
1613 | magic_nextpack((SV*)hv, mg, key); | |
1614 | HvEITER(hv) = NULL; /* need to reset iterator */ | |
1615 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; | |
1616 | } | |
1617 | ||
1618 | /* there is a SCALAR method that we can call */ | |
1619 | ENTER; | |
1620 | PUSHSTACKi(PERLSI_MAGIC); | |
1621 | PUSHMARK(SP); | |
1622 | EXTEND(SP, 1); | |
1623 | PUSHs(tied); | |
1624 | PUTBACK; | |
1625 | ||
1626 | if (call_method("SCALAR", G_SCALAR)) | |
1627 | retval = *PL_stack_sp--; | |
1628 | POPSTACK; | |
1629 | LEAVE; | |
1630 | return retval; | |
1631 | } | |
1632 | ||
a0d0e21e | 1633 | int |
864dbfa3 | 1634 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1635 | { |
1636 | OP *o; | |
1637 | I32 i; | |
1638 | GV* gv; | |
1639 | SV** svp; | |
2d8e6c8d | 1640 | STRLEN n_a; |
79072805 | 1641 | |
3280af22 | 1642 | gv = PL_DBline; |
79072805 | 1643 | i = SvTRUE(sv); |
188ea221 | 1644 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1645 | atoi(MgPV(mg,n_a)), FALSE); |
5df8de69 DM |
1646 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) { |
1647 | /* set or clear breakpoint in the relevant control op */ | |
1648 | if (i) | |
1649 | o->op_flags |= OPf_SPECIAL; | |
1650 | else | |
1651 | o->op_flags &= ~OPf_SPECIAL; | |
1652 | } | |
79072805 LW |
1653 | return 0; |
1654 | } | |
1655 | ||
1656 | int | |
864dbfa3 | 1657 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1658 | { |
3280af22 | 1659 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1660 | return 0; |
1661 | } | |
1662 | ||
1663 | int | |
864dbfa3 | 1664 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1665 | { |
3280af22 | 1666 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1667 | return 0; |
1668 | } | |
1669 | ||
1670 | int | |
864dbfa3 | 1671 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1672 | { |
1673 | SV* lsv = LvTARG(sv); | |
ac27b0f5 | 1674 | |
a0d0e21e | 1675 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
14befaf4 | 1676 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
565764a8 | 1677 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 | 1678 | I32 i = mg->mg_len; |
7e2040f0 | 1679 | if (DO_UTF8(lsv)) |
a0ed51b3 LW |
1680 | sv_pos_b2u(lsv, &i); |
1681 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1682 | return 0; |
1683 | } | |
1684 | } | |
0c34ef67 | 1685 | SvOK_off(sv); |
a0d0e21e LW |
1686 | return 0; |
1687 | } | |
1688 | ||
1689 | int | |
864dbfa3 | 1690 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1691 | { |
1692 | SV* lsv = LvTARG(sv); | |
1693 | SSize_t pos; | |
1694 | STRLEN len; | |
c00206c8 | 1695 | STRLEN ulen = 0; |
a0d0e21e LW |
1696 | |
1697 | mg = 0; | |
ac27b0f5 | 1698 | |
a0d0e21e | 1699 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
14befaf4 | 1700 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e LW |
1701 | if (!mg) { |
1702 | if (!SvOK(sv)) | |
1703 | return 0; | |
14befaf4 DM |
1704 | sv_magic(lsv, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1705 | mg = mg_find(lsv, PERL_MAGIC_regex_global); | |
a0d0e21e LW |
1706 | } |
1707 | else if (!SvOK(sv)) { | |
565764a8 | 1708 | mg->mg_len = -1; |
a0d0e21e LW |
1709 | return 0; |
1710 | } | |
1711 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1712 | ||
c485e607 | 1713 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 | 1714 | |
7e2040f0 | 1715 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1716 | ulen = sv_len_utf8(lsv); |
1717 | if (ulen) | |
1718 | len = ulen; | |
a0ed51b3 LW |
1719 | } |
1720 | ||
a0d0e21e LW |
1721 | if (pos < 0) { |
1722 | pos += len; | |
1723 | if (pos < 0) | |
1724 | pos = 0; | |
1725 | } | |
eb160463 | 1726 | else if (pos > (SSize_t)len) |
a0d0e21e | 1727 | pos = len; |
a0ed51b3 LW |
1728 | |
1729 | if (ulen) { | |
1730 | I32 p = pos; | |
1731 | sv_pos_u2b(lsv, &p, 0); | |
1732 | pos = p; | |
1733 | } | |
727405f8 | 1734 | |
565764a8 | 1735 | mg->mg_len = pos; |
71be2cbc | 1736 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1737 | |
79072805 LW |
1738 | return 0; |
1739 | } | |
1740 | ||
1741 | int | |
864dbfa3 | 1742 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1743 | { |
8646b087 | 1744 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1745 | SvFAKE_off(sv); | |
946ec16e | 1746 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1747 | SvFAKE_on(sv); |
1748 | } | |
1749 | else | |
946ec16e | 1750 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1751 | return 0; |
1752 | } | |
1753 | ||
1754 | int | |
864dbfa3 | 1755 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1756 | { |
79072805 | 1757 | GV* gv; |
7a5fd60d | 1758 | |
79072805 LW |
1759 | if (!SvOK(sv)) |
1760 | return 0; | |
7a5fd60d | 1761 | gv = gv_fetchsv(sv,TRUE, SVt_PVGV); |
79072805 LW |
1762 | if (sv == (SV*)gv) |
1763 | return 0; | |
1764 | if (GvGP(sv)) | |
88e89b8a | 1765 | gp_free((GV*)sv); |
79072805 | 1766 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1767 | return 0; |
1768 | } | |
1769 | ||
1770 | int | |
864dbfa3 | 1771 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1772 | { |
1773 | STRLEN len; | |
35a4481c AL |
1774 | SV * const lsv = LvTARG(sv); |
1775 | const char * const tmps = SvPV(lsv,len); | |
6ff81951 GS |
1776 | I32 offs = LvTARGOFF(sv); |
1777 | I32 rem = LvTARGLEN(sv); | |
1778 | ||
9aa983d2 JH |
1779 | if (SvUTF8(lsv)) |
1780 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1781 | if (offs > (I32)len) |
6ff81951 | 1782 | offs = len; |
eb160463 | 1783 | if (rem + offs > (I32)len) |
6ff81951 GS |
1784 | rem = len - offs; |
1785 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1786 | if (SvUTF8(lsv)) |
2ef4b674 | 1787 | SvUTF8_on(sv); |
6ff81951 GS |
1788 | return 0; |
1789 | } | |
1790 | ||
1791 | int | |
864dbfa3 | 1792 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1793 | { |
9aa983d2 JH |
1794 | STRLEN len; |
1795 | char *tmps = SvPV(sv, len); | |
1796 | SV *lsv = LvTARG(sv); | |
1797 | I32 lvoff = LvTARGOFF(sv); | |
1798 | I32 lvlen = LvTARGLEN(sv); | |
075a4a2b | 1799 | |
1aa99e6b | 1800 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1801 | sv_utf8_upgrade(lsv); |
1802 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1803 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1804 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1805 | SvUTF8_on(lsv); |
1806 | } | |
9bf12eaf | 1807 | else if (lsv && SvUTF8(lsv)) { |
9aa983d2 | 1808 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1809 | LvTARGLEN(sv) = len; |
e95af362 | 1810 | tmps = (char*)bytes_to_utf8((U8*)tmps, &len); |
9aa983d2 JH |
1811 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1812 | Safefree(tmps); | |
1aa99e6b | 1813 | } |
b76f3ce2 GB |
1814 | else { |
1815 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1816 | LvTARGLEN(sv) = len; | |
1817 | } | |
1818 | ||
1aa99e6b | 1819 | |
79072805 LW |
1820 | return 0; |
1821 | } | |
1822 | ||
1823 | int | |
864dbfa3 | 1824 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1825 | { |
565764a8 | 1826 | TAINT_IF((mg->mg_len & 1) || |
155aba94 | 1827 | ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */ |
463ee0b2 LW |
1828 | return 0; |
1829 | } | |
1830 | ||
1831 | int | |
864dbfa3 | 1832 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1833 | { |
3280af22 NIS |
1834 | if (PL_localizing) { |
1835 | if (PL_localizing == 1) | |
565764a8 | 1836 | mg->mg_len <<= 1; |
748a9306 | 1837 | else |
565764a8 | 1838 | mg->mg_len >>= 1; |
a0d0e21e | 1839 | } |
3280af22 | 1840 | else if (PL_tainted) |
565764a8 | 1841 | mg->mg_len |= 1; |
748a9306 | 1842 | else |
565764a8 | 1843 | mg->mg_len &= ~1; |
463ee0b2 LW |
1844 | return 0; |
1845 | } | |
1846 | ||
1847 | int | |
864dbfa3 | 1848 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1849 | { |
35a4481c | 1850 | SV * const lsv = LvTARG(sv); |
6ff81951 GS |
1851 | |
1852 | if (!lsv) { | |
0c34ef67 | 1853 | SvOK_off(sv); |
6ff81951 GS |
1854 | return 0; |
1855 | } | |
6ff81951 | 1856 | |
81e118e0 | 1857 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1858 | return 0; |
1859 | } | |
1860 | ||
1861 | int | |
864dbfa3 | 1862 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1863 | { |
1864 | do_vecset(sv); /* XXX slurp this routine */ | |
1865 | return 0; | |
1866 | } | |
1867 | ||
1868 | int | |
864dbfa3 | 1869 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1870 | { |
71be2cbc | 1871 | SV *targ = Nullsv; |
5f05dabc | 1872 | if (LvTARGLEN(sv)) { |
68dc0745 | 1873 | if (mg->mg_obj) { |
74e13ce4 | 1874 | SV *ahv = LvTARG(sv); |
6d822dc4 MS |
1875 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1876 | if (he) | |
1877 | targ = HeVAL(he); | |
68dc0745 | 1878 | } |
1879 | else { | |
3c78fafa | 1880 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1881 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1882 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1883 | } | |
3280af22 | 1884 | if (targ && targ != &PL_sv_undef) { |
68dc0745 | 1885 | /* somebody else defined it for us */ |
1886 | SvREFCNT_dec(LvTARG(sv)); | |
1887 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1888 | LvTARGLEN(sv) = 0; | |
1889 | SvREFCNT_dec(mg->mg_obj); | |
1890 | mg->mg_obj = Nullsv; | |
1891 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1892 | } | |
5f05dabc | 1893 | } |
71be2cbc | 1894 | else |
1895 | targ = LvTARG(sv); | |
3280af22 | 1896 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1897 | return 0; |
1898 | } | |
1899 | ||
1900 | int | |
864dbfa3 | 1901 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1902 | { |
1903 | if (LvTARGLEN(sv)) | |
68dc0745 | 1904 | vivify_defelem(sv); |
1905 | if (LvTARG(sv)) { | |
5f05dabc | 1906 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1907 | SvSETMAGIC(LvTARG(sv)); |
1908 | } | |
5f05dabc | 1909 | return 0; |
1910 | } | |
1911 | ||
71be2cbc | 1912 | void |
864dbfa3 | 1913 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1914 | { |
74e13ce4 GS |
1915 | MAGIC *mg; |
1916 | SV *value = Nullsv; | |
71be2cbc | 1917 | |
14befaf4 | 1918 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 1919 | return; |
68dc0745 | 1920 | if (mg->mg_obj) { |
74e13ce4 | 1921 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1922 | STRLEN n_a; |
6d822dc4 MS |
1923 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
1924 | if (he) | |
1925 | value = HeVAL(he); | |
3280af22 | 1926 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1927 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1928 | } |
68dc0745 | 1929 | else { |
1930 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1931 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1932 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1933 | else { | |
1934 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1935 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1936 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1937 | } |
1938 | } | |
3e3baf6d | 1939 | (void)SvREFCNT_inc(value); |
68dc0745 | 1940 | SvREFCNT_dec(LvTARG(sv)); |
1941 | LvTARG(sv) = value; | |
71be2cbc | 1942 | LvTARGLEN(sv) = 0; |
68dc0745 | 1943 | SvREFCNT_dec(mg->mg_obj); |
1944 | mg->mg_obj = Nullsv; | |
1945 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1946 | } |
1947 | ||
1948 | int | |
864dbfa3 | 1949 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1950 | { |
1951 | AV *av = (AV*)mg->mg_obj; | |
1952 | SV **svp = AvARRAY(av); | |
1953 | I32 i = AvFILLp(av); | |
1954 | while (i >= 0) { | |
fdc9a813 | 1955 | if (svp[i]) { |
810b8aa5 | 1956 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 | 1957 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1958 | /* XXX Should we check that it hasn't changed? */ |
1959 | SvRV(svp[i]) = 0; | |
0c34ef67 | 1960 | SvOK_off(svp[i]); |
810b8aa5 | 1961 | SvWEAKREF_off(svp[i]); |
fdc9a813 | 1962 | svp[i] = Nullsv; |
810b8aa5 GS |
1963 | } |
1964 | i--; | |
1965 | } | |
d99b02a1 | 1966 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ |
810b8aa5 GS |
1967 | return 0; |
1968 | } | |
1969 | ||
1970 | int | |
864dbfa3 | 1971 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1972 | { |
565764a8 | 1973 | mg->mg_len = -1; |
c6496cc7 | 1974 | SvSCREAM_off(sv); |
93a17b20 LW |
1975 | return 0; |
1976 | } | |
1977 | ||
1978 | int | |
864dbfa3 | 1979 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1980 | { |
14befaf4 | 1981 | sv_unmagic(sv, PERL_MAGIC_bm); |
79072805 LW |
1982 | SvVALID_off(sv); |
1983 | return 0; | |
1984 | } | |
1985 | ||
1986 | int | |
864dbfa3 | 1987 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1988 | { |
14befaf4 | 1989 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 1990 | SvCOMPILED_off(sv); |
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | int | |
864dbfa3 | 1995 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1996 | { |
35a4481c | 1997 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
1998 | |
1999 | if (uf && uf->uf_set) | |
24f81a43 | 2000 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2001 | return 0; |
2002 | } | |
2003 | ||
c277df42 | 2004 | int |
faf82a0b AE |
2005 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2006 | { | |
2007 | sv_unmagic(sv, PERL_MAGIC_qr); | |
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | int | |
864dbfa3 | 2012 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
2013 | { |
2014 | regexp *re = (regexp *)mg->mg_obj; | |
2015 | ReREFCNT_dec(re); | |
2016 | return 0; | |
2017 | } | |
2018 | ||
7a4c00b4 | 2019 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2020 | int |
864dbfa3 | 2021 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2022 | { |
2023 | /* | |
838b5b74 | 2024 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2025 | * and vanished with a faint plop. |
2026 | */ | |
7a4c00b4 | 2027 | if (mg->mg_ptr) { |
2028 | Safefree(mg->mg_ptr); | |
2029 | mg->mg_ptr = NULL; | |
565764a8 | 2030 | mg->mg_len = -1; |
7a4c00b4 | 2031 | } |
bbce6d69 | 2032 | return 0; |
2033 | } | |
7a4c00b4 | 2034 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2035 | |
7e8c5dac HS |
2036 | /* Just clear the UTF-8 cache data. */ |
2037 | int | |
2038 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2039 | { | |
2040 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ | |
2041 | mg->mg_ptr = 0; | |
2042 | mg->mg_len = -1; /* The mg_len holds the len cache. */ | |
2043 | return 0; | |
2044 | } | |
2045 | ||
bbce6d69 | 2046 | int |
864dbfa3 | 2047 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2048 | { |
e1ec3a88 | 2049 | register const char *s; |
79072805 | 2050 | I32 i; |
8990e307 | 2051 | STRLEN len; |
79072805 | 2052 | switch (*mg->mg_ptr) { |
748a9306 | 2053 | case '\001': /* ^A */ |
3280af22 | 2054 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2055 | break; |
49460fe6 | 2056 | case '\003': /* ^C */ |
eb160463 | 2057 | PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
49460fe6 NIS |
2058 | break; |
2059 | ||
79072805 | 2060 | case '\004': /* ^D */ |
b4ab917c DM |
2061 | #ifdef DEBUGGING |
2062 | s = SvPV_nolen(sv); | |
ddcf8bc1 | 2063 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2064 | DEBUG_x(dump_all()); |
b4ab917c DM |
2065 | #else |
2066 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG; | |
2067 | #endif | |
79072805 | 2068 | break; |
28f23441 | 2069 | case '\005': /* ^E */ |
d0063567 | 2070 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2071 | #ifdef MACOS_TRADITIONAL |
d0063567 | 2072 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 | 2073 | #else |
cd39f2b6 | 2074 | # ifdef VMS |
d0063567 | 2075 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf | 2076 | # else |
cd39f2b6 | 2077 | # ifdef WIN32 |
d0063567 | 2078 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2079 | # else |
9fed8b87 | 2080 | # ifdef OS2 |
d0063567 | 2081 | os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
9fed8b87 | 2082 | # else |
d0063567 DK |
2083 | /* will anyone ever use this? */ |
2084 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 2085 | # endif |
048c1ddf IZ |
2086 | # endif |
2087 | # endif | |
22fae026 | 2088 | #endif |
d0063567 DK |
2089 | } |
2090 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2091 | if (PL_encoding) | |
2092 | SvREFCNT_dec(PL_encoding); | |
2093 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2094 | PL_encoding = newSVsv(sv); | |
2095 | } | |
2096 | else { | |
2097 | PL_encoding = Nullsv; | |
2098 | } | |
2099 | } | |
2100 | break; | |
79072805 | 2101 | case '\006': /* ^F */ |
3280af22 | 2102 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 2103 | break; |
a0d0e21e | 2104 | case '\010': /* ^H */ |
3280af22 | 2105 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 2106 | break; |
9d116dd7 | 2107 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
2108 | if (PL_inplace) |
2109 | Safefree(PL_inplace); | |
79072805 | 2110 | if (SvOK(sv)) |
2e0de35c | 2111 | PL_inplace = savesvpv(sv); |
79072805 | 2112 | else |
3280af22 | 2113 | PL_inplace = Nullch; |
79072805 | 2114 | break; |
28f23441 | 2115 | case '\017': /* ^O */ |
ac27b0f5 | 2116 | if (*(mg->mg_ptr+1) == '\0') { |
1bf29663 | 2117 | if (PL_osname) { |
ac27b0f5 | 2118 | Safefree(PL_osname); |
1bf29663 DM |
2119 | PL_osname = Nullch; |
2120 | } | |
3511154c DM |
2121 | if (SvOK(sv)) { |
2122 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2123 | PL_osname = savesvpv(sv); |
3511154c | 2124 | } |
ac27b0f5 NIS |
2125 | } |
2126 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
2127 | if (!PL_compiling.cop_io) | |
2128 | PL_compiling.cop_io = newSVsv(sv); | |
2129 | else | |
2130 | sv_setsv(PL_compiling.cop_io,sv); | |
2131 | } | |
28f23441 | 2132 | break; |
79072805 | 2133 | case '\020': /* ^P */ |
3280af22 | 2134 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
39bd0f18 PJ |
2135 | if ((PERLDB_SUB || PERLDB_LINE || PERLDB_SUBLINE || PERLDB_ASSERTION) |
2136 | && !PL_DBsingle) | |
1ee4443e | 2137 | init_debugger(); |
79072805 LW |
2138 | break; |
2139 | case '\024': /* ^T */ | |
88e89b8a | 2140 | #ifdef BIG_TIME |
6b88bc9c | 2141 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2142 | #else |
3280af22 | 2143 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 2144 | #endif |
79072805 | 2145 | break; |
fde18df1 | 2146 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2147 | if (*(mg->mg_ptr+1) == '\0') { |
2148 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
2149 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
ac27b0f5 | 2150 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2151 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2152 | } |
599cee73 | 2153 | } |
0a378802 | 2154 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2155 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2156 | if (!SvPOK(sv) && PL_localizing) { |
2157 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2158 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2159 | break; |
2160 | } | |
f4fc7782 | 2161 | { |
b5477537 | 2162 | STRLEN len, i; |
d3a7d8c7 | 2163 | int accumulate = 0 ; |
f4fc7782 | 2164 | int any_fatals = 0 ; |
35a4481c | 2165 | const char * const ptr = (char*)SvPV(sv, len) ; |
f4fc7782 JH |
2166 | for (i = 0 ; i < len ; ++i) { |
2167 | accumulate |= ptr[i] ; | |
2168 | any_fatals |= (ptr[i] & 0xAA) ; | |
2169 | } | |
d3a7d8c7 GS |
2170 | if (!accumulate) |
2171 | PL_compiling.cop_warnings = pWARN_NONE; | |
f4fc7782 JH |
2172 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
2173 | PL_compiling.cop_warnings = pWARN_ALL; | |
2174 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2175 | } |
d3a7d8c7 GS |
2176 | else { |
2177 | if (specialWARN(PL_compiling.cop_warnings)) | |
2178 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
2179 | else | |
2180 | sv_setsv(PL_compiling.cop_warnings, sv); | |
2181 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
2182 | PL_dowarn |= G_WARN_ONCE ; | |
2183 | } | |
f4fc7782 | 2184 | |
d3a7d8c7 | 2185 | } |
4438c4b7 | 2186 | } |
971a9dd3 | 2187 | } |
79072805 LW |
2188 | break; |
2189 | case '.': | |
3280af22 NIS |
2190 | if (PL_localizing) { |
2191 | if (PL_localizing == 1) | |
7766f137 | 2192 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2193 | } |
3280af22 | 2194 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2195 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2196 | break; |
2197 | case '^': | |
3280af22 | 2198 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2199 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
7a5fd60d | 2200 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO); |
79072805 LW |
2201 | break; |
2202 | case '~': | |
3280af22 | 2203 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2204 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
7a5fd60d | 2205 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO); |
79072805 LW |
2206 | break; |
2207 | case '=': | |
632db599 | 2208 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2209 | break; |
2210 | case '-': | |
632db599 | 2211 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
3280af22 NIS |
2212 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2213 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2214 | break; |
2215 | case '%': | |
632db599 | 2216 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2217 | break; |
2218 | case '|': | |
4b65379b | 2219 | { |
3280af22 | 2220 | IO *io = GvIOp(PL_defoutgv); |
720f287d AB |
2221 | if(!io) |
2222 | break; | |
4b65379b CS |
2223 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
2224 | IoFLAGS(io) &= ~IOf_FLUSH; | |
2225 | else { | |
2226 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2227 | PerlIO *ofp = IoOFP(io); | |
2228 | if (ofp) | |
2229 | (void)PerlIO_flush(ofp); | |
2230 | IoFLAGS(io) |= IOf_FLUSH; | |
2231 | } | |
2232 | } | |
79072805 LW |
2233 | } |
2234 | break; | |
79072805 | 2235 | case '/': |
3280af22 | 2236 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2237 | PL_rs = newSVsv(sv); |
79072805 LW |
2238 | break; |
2239 | case '\\': | |
7889fe52 NIS |
2240 | if (PL_ors_sv) |
2241 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2242 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2243 | PL_ors_sv = newSVsv(sv); |
009c130f | 2244 | } |
e3c19b7b | 2245 | else { |
7889fe52 | 2246 | PL_ors_sv = Nullsv; |
e3c19b7b | 2247 | } |
79072805 LW |
2248 | break; |
2249 | case ',': | |
7889fe52 NIS |
2250 | if (PL_ofs_sv) |
2251 | SvREFCNT_dec(PL_ofs_sv); | |
2252 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2253 | PL_ofs_sv = newSVsv(sv); | |
2254 | } | |
2255 | else { | |
2256 | PL_ofs_sv = Nullsv; | |
2257 | } | |
79072805 LW |
2258 | break; |
2259 | case '#': | |
3280af22 NIS |
2260 | if (PL_ofmt) |
2261 | Safefree(PL_ofmt); | |
2e0de35c | 2262 | PL_ofmt = savesvpv(sv); |
79072805 LW |
2263 | break; |
2264 | case '[': | |
3280af22 | 2265 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
2266 | break; |
2267 | case '?': | |
ff0cee69 | 2268 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2269 | if (PL_localizing == 2) { |
2270 | PL_statusvalue = LvTARGOFF(sv); | |
2271 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2272 | } |
2273 | else | |
2274 | #endif | |
2275 | #ifdef VMSISH_STATUS | |
2276 | if (VMSISH_STATUS) | |
2277 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
2278 | else | |
2279 | #endif | |
2280 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
2281 | break; |
2282 | case '!': | |
93189314 JH |
2283 | { |
2284 | #ifdef VMS | |
2285 | # define PERL_VMS_BANG vaxc$errno | |
2286 | #else | |
2287 | # define PERL_VMS_BANG 0 | |
2288 | #endif | |
91487cfc | 2289 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2290 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2291 | } | |
79072805 LW |
2292 | break; |
2293 | case '<': | |
3280af22 NIS |
2294 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2295 | if (PL_delaymagic) { | |
2296 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2297 | break; /* don't do magic till later */ |
2298 | } | |
2299 | #ifdef HAS_SETRUID | |
b28d0864 | 2300 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2301 | #else |
2302 | #ifdef HAS_SETREUID | |
3280af22 | 2303 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2304 | #else |
85e6fe83 | 2305 | #ifdef HAS_SETRESUID |
b28d0864 | 2306 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2307 | #else |
75870ed3 | 2308 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2309 | #ifdef PERL_DARWIN | |
2310 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2311 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2312 | (void)PerlProc_setuid(0); | |
2313 | #endif | |
b28d0864 | 2314 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2315 | } else { |
d8eceb89 | 2316 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2317 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2318 | } |
79072805 LW |
2319 | #endif |
2320 | #endif | |
85e6fe83 | 2321 | #endif |
d8eceb89 | 2322 | PL_uid = PerlProc_getuid(); |
3280af22 | 2323 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2324 | break; |
2325 | case '>': | |
3280af22 NIS |
2326 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2327 | if (PL_delaymagic) { | |
2328 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2329 | break; /* don't do magic till later */ |
2330 | } | |
2331 | #ifdef HAS_SETEUID | |
3280af22 | 2332 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2333 | #else |
2334 | #ifdef HAS_SETREUID | |
b28d0864 | 2335 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2336 | #else |
2337 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2338 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2339 | #else |
b28d0864 NIS |
2340 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2341 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2342 | else { |
e8ee3774 | 2343 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2344 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2345 | } |
79072805 LW |
2346 | #endif |
2347 | #endif | |
85e6fe83 | 2348 | #endif |
d8eceb89 | 2349 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2350 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2351 | break; |
2352 | case '(': | |
3280af22 NIS |
2353 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2354 | if (PL_delaymagic) { | |
2355 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2356 | break; /* don't do magic till later */ |
2357 | } | |
2358 | #ifdef HAS_SETRGID | |
b28d0864 | 2359 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2360 | #else |
2361 | #ifdef HAS_SETREGID | |
3280af22 | 2362 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2363 | #else |
2364 | #ifdef HAS_SETRESGID | |
b28d0864 | 2365 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2366 | #else |
b28d0864 NIS |
2367 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2368 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2369 | else { |
d8eceb89 | 2370 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2371 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2372 | } |
79072805 LW |
2373 | #endif |
2374 | #endif | |
85e6fe83 | 2375 | #endif |
d8eceb89 | 2376 | PL_gid = PerlProc_getgid(); |
3280af22 | 2377 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2378 | break; |
2379 | case ')': | |
5cd24f17 | 2380 | #ifdef HAS_SETGROUPS |
2381 | { | |
35a4481c | 2382 | const char *p = SvPV(sv, len); |
5cd24f17 | 2383 | Groups_t gary[NGROUPS]; |
2384 | ||
5cd24f17 | 2385 | while (isSPACE(*p)) |
2386 | ++p; | |
2d4389e4 | 2387 | PL_egid = Atol(p); |
5cd24f17 | 2388 | for (i = 0; i < NGROUPS; ++i) { |
2389 | while (*p && !isSPACE(*p)) | |
2390 | ++p; | |
2391 | while (isSPACE(*p)) | |
2392 | ++p; | |
2393 | if (!*p) | |
2394 | break; | |
2d4389e4 | 2395 | gary[i] = Atol(p); |
5cd24f17 | 2396 | } |
8cc95fdb | 2397 | if (i) |
2398 | (void)setgroups(i, gary); | |
5cd24f17 | 2399 | } |
2400 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 2401 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 2402 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2403 | if (PL_delaymagic) { |
2404 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2405 | break; /* don't do magic till later */ |
2406 | } | |
2407 | #ifdef HAS_SETEGID | |
3280af22 | 2408 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2409 | #else |
2410 | #ifdef HAS_SETREGID | |
b28d0864 | 2411 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2412 | #else |
2413 | #ifdef HAS_SETRESGID | |
b28d0864 | 2414 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2415 | #else |
b28d0864 NIS |
2416 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2417 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2418 | else { |
d8eceb89 | 2419 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2420 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2421 | } |
79072805 LW |
2422 | #endif |
2423 | #endif | |
85e6fe83 | 2424 | #endif |
d8eceb89 | 2425 | PL_egid = PerlProc_getegid(); |
3280af22 | 2426 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2427 | break; |
2428 | case ':': | |
2d8e6c8d | 2429 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2430 | break; |
cd39f2b6 | 2431 | #ifndef MACOS_TRADITIONAL |
79072805 | 2432 | case '0': |
e2975953 | 2433 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2434 | #ifdef HAS_SETPROCTITLE |
2435 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2436 | * show a string from the process struct and provide | |
2437 | * the setproctitle() routine to manipulate that. */ | |
2438 | { | |
2439 | s = SvPV(sv, len); | |
98b76f99 | 2440 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2441 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2442 | * but not the "(perl) suffix from the ps(1) |
2443 | * output, because that's what ps(1) shows if the | |
2444 | * argv[] is modified. */ | |
6f2ad931 | 2445 | setproctitle("-%s", s); |
9aad2c0e | 2446 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2447 | /* This doesn't really work if you assume that |
2448 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2449 | * because in ps(1) output the result will be like | |
2450 | * sprintf("perl: %s (perl)", s) | |
2451 | * I guess this is a security feature: | |
2452 | * one (a user process) cannot get rid of the original name. | |
2453 | * --jhi */ | |
2454 | setproctitle("%s", s); | |
2455 | # endif | |
2456 | } | |
2457 | #endif | |
17aa7f3d JH |
2458 | #if defined(__hpux) && defined(PSTAT_SETCMD) |
2459 | { | |
2460 | union pstun un; | |
2461 | s = SvPV(sv, len); | |
2462 | un.pst_command = s; | |
2463 | pstat(PSTAT_SETCMD, un, len, 0, 0); | |
2464 | } | |
2465 | #endif | |
3cb9023d | 2466 | /* PL_origalen is set in perl_parse(). */ |
a0d0e21e | 2467 | s = SvPV_force(sv,len); |
6f698202 AMS |
2468 | if (len >= (STRLEN)PL_origalen-1) { |
2469 | /* Longer than original, will be truncated. We assume that | |
2470 | * PL_origalen bytes are available. */ | |
2471 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
79072805 LW |
2472 | } |
2473 | else { | |
54bfe034 JH |
2474 | /* Shorter than original, will be padded. */ |
2475 | Copy(s, PL_origargv[0], len, char); | |
2476 | PL_origargv[0][len] = 0; | |
2477 | memset(PL_origargv[0] + len + 1, | |
2478 | /* Is the space counterintuitive? Yes. | |
2479 | * (You were expecting \0?) | |
3cb9023d | 2480 | * Does it work? Seems to. (In Linux 2.4.20 at least.) |
54bfe034 JH |
2481 | * --jhi */ |
2482 | (int)' ', | |
2483 | PL_origalen - len - 1); | |
79072805 | 2484 | } |
ad7eccf4 JD |
2485 | PL_origargv[0][PL_origalen-1] = 0; |
2486 | for (i = 1; i < PL_origargc; i++) | |
2487 | PL_origargv[i] = 0; | |
e2975953 | 2488 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2489 | break; |
cd39f2b6 | 2490 | #endif |
79072805 LW |
2491 | } |
2492 | return 0; | |
2493 | } | |
2494 | ||
2495 | I32 | |
35a4481c | 2496 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2497 | { |
e1ec3a88 | 2498 | register const char **sigv; |
79072805 | 2499 | |
e02bfb16 | 2500 | for (sigv = PL_sig_name; *sigv; sigv++) |
79072805 | 2501 | if (strEQ(sig,*sigv)) |
22c35a8c | 2502 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
2503 | #ifdef SIGCLD |
2504 | if (strEQ(sig,"CHLD")) | |
2505 | return SIGCLD; | |
2506 | #endif | |
2507 | #ifdef SIGCHLD | |
2508 | if (strEQ(sig,"CLD")) | |
2509 | return SIGCHLD; | |
2510 | #endif | |
7f1236c0 | 2511 | return -1; |
79072805 LW |
2512 | } |
2513 | ||
df3728a2 | 2514 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2515 | static SV* sig_sv; |
df3728a2 | 2516 | #endif |
84902520 | 2517 | |
ecfc5424 | 2518 | Signal_t |
cea2e8a9 | 2519 | Perl_sighandler(int sig) |
79072805 | 2520 | { |
1018e26f NIS |
2521 | #ifdef PERL_GET_SIG_CONTEXT |
2522 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2523 | #else |
cea2e8a9 | 2524 | dTHX; |
71d280e3 | 2525 | #endif |
79072805 | 2526 | dSP; |
00d579c5 | 2527 | GV *gv = Nullgv; |
a0d0e21e | 2528 | HV *st; |
b7953727 | 2529 | SV *sv = Nullsv, *tSv = PL_Sv; |
00d579c5 | 2530 | CV *cv = Nullcv; |
533c011a | 2531 | OP *myop = PL_op; |
84902520 | 2532 | U32 flags = 0; |
3280af22 | 2533 | XPV *tXpv = PL_Xpv; |
71d280e3 | 2534 | |
3280af22 | 2535 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2536 | flags |= 1; |
3280af22 | 2537 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2538 | flags |= 4; |
3280af22 | 2539 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2540 | flags |= 16; |
2541 | ||
727405f8 | 2542 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2543 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2544 | PL_sig_name[sig]); |
2545 | exit(sig); | |
2546 | } | |
ff0cee69 | 2547 | |
84902520 TB |
2548 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2549 | infinity, so we fix 4 (in fact 5): */ | |
2550 | if (flags & 1) { | |
3280af22 | 2551 | PL_savestack_ix += 5; /* Protect save in progress. */ |
c76ac1ee | 2552 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 | 2553 | } |
ac27b0f5 | 2554 | if (flags & 4) |
3280af22 | 2555 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2556 | if (flags & 16) |
3280af22 | 2557 | PL_scopestack_ix += 1; |
84902520 | 2558 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2559 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2560 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2561 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2562 | |
a0d0e21e | 2563 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2564 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2565 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2566 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2567 | : ((cv && CvGV(cv)) |
2568 | ? GvENAME(CvGV(cv)) | |
2569 | : "__ANON__"))); | |
2570 | goto cleanup; | |
79072805 LW |
2571 | } |
2572 | ||
22c35a8c GS |
2573 | if(PL_psig_name[sig]) { |
2574 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 | 2575 | flags |= 64; |
df3728a2 | 2576 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2577 | sig_sv = sv; |
df3728a2 | 2578 | #endif |
84902520 | 2579 | } else { |
ff0cee69 | 2580 | sv = sv_newmortal(); |
22c35a8c | 2581 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2582 | } |
e336de0d | 2583 | |
e788e7d3 | 2584 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2585 | PUSHMARK(SP); |
79072805 | 2586 | PUSHs(sv); |
79072805 | 2587 | PUTBACK; |
a0d0e21e | 2588 | |
1b266415 | 2589 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2590 | |
d3acc0f7 | 2591 | POPSTACK; |
1b266415 | 2592 | if (SvTRUE(ERRSV)) { |
1d615522 | 2593 | #ifndef PERL_MICRO |
983dbef6 | 2594 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2595 | /* Handler "died", for example to get out of a restart-able read(). |
2596 | * Before we re-do that on its behalf re-enable the signal which was | |
2597 | * blocked by the system when we entered. | |
2598 | */ | |
2599 | sigset_t set; | |
2600 | sigemptyset(&set); | |
2601 | sigaddset(&set,sig); | |
2602 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2603 | #else | |
2604 | /* Not clear if this will work */ | |
2605 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2606 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2607 | #endif |
1d615522 | 2608 | #endif /* !PERL_MICRO */ |
5df617be | 2609 | DieNull; |
1b266415 | 2610 | } |
00d579c5 | 2611 | cleanup: |
84902520 | 2612 | if (flags & 1) |
3280af22 | 2613 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2614 | if (flags & 4) |
3280af22 | 2615 | PL_markstack_ptr--; |
84902520 | 2616 | if (flags & 16) |
3280af22 | 2617 | PL_scopestack_ix -= 1; |
84902520 TB |
2618 | if (flags & 64) |
2619 | SvREFCNT_dec(sv); | |
533c011a | 2620 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2621 | |
3280af22 NIS |
2622 | PL_Sv = tSv; /* Restore global temporaries. */ |
2623 | PL_Xpv = tXpv; | |
53bb94e2 | 2624 | return; |
79072805 | 2625 | } |
4e35701f NIS |
2626 | |
2627 | ||
51371543 | 2628 | static void |
35a4481c | 2629 | restore_magic(pTHX_ const void *p) |
51371543 | 2630 | { |
48944bdf | 2631 | MGS* mgs = SSPTR(PTR2IV(p), MGS*); |
51371543 GS |
2632 | SV* sv = mgs->mgs_sv; |
2633 | ||
2634 | if (!sv) | |
2635 | return; | |
2636 | ||
2637 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2638 | { | |
f9701176 NC |
2639 | #ifdef PERL_COPY_ON_WRITE |
2640 | /* While magic was saved (and off) sv_setsv may well have seen | |
2641 | this SV as a prime candidate for COW. */ | |
2642 | if (SvIsCOW(sv)) | |
2643 | sv_force_normal(sv); | |
2644 | #endif | |
2645 | ||
51371543 GS |
2646 | if (mgs->mgs_flags) |
2647 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2648 | else | |
2649 | mg_magical(sv); | |
2650 | if (SvGMAGICAL(sv)) | |
2651 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2652 | } | |
2653 | ||
2654 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2655 | ||
2656 | /* If we're still on top of the stack, pop us off. (That condition | |
2657 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2658 | * if it's being called via leave_scope.) | |
2659 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2660 | * may leave alloc gunk on the savestack, and some code | |
2661 | * (e.g. sighandler) doesn't expect that... | |
2662 | */ | |
2663 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2664 | { | |
2665 | I32 popval = SSPOPINT; | |
c76ac1ee | 2666 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2667 | PL_savestack_ix -= 2; |
2668 | popval = SSPOPINT; | |
2669 | assert(popval == SAVEt_ALLOC); | |
2670 | popval = SSPOPINT; | |
2671 | PL_savestack_ix -= popval; | |
2672 | } | |
2673 | ||
2674 | } | |
2675 | ||
2676 | static void | |
35a4481c | 2677 | unwind_handler_stack(pTHX_ const void *p) |
51371543 | 2678 | { |
e1ec3a88 | 2679 | const U32 flags = *(const U32*)p; |
51371543 GS |
2680 | |
2681 | if (flags & 1) | |
2682 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2683 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
df3728a2 | 2684 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 GS |
2685 | if (flags & 64) |
2686 | SvREFCNT_dec(sig_sv); | |
df3728a2 | 2687 | #endif |
51371543 | 2688 | } |
1018e26f NIS |
2689 | |
2690 |