Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b5f8cc5c | 4 | * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never | |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent." | |
79072805 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Magical Functions | |
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 | |
acfe0abc GS |
66 | static void restore_magic(pTHX_ void *p); |
67 | static void unwind_handler_stack(pTHX_ 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 LW |
121 | { |
122 | MAGIC* mg; | |
123 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
124 | MGVTBL* vtbl = mg->mg_virtual; | |
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 | { |
ff76feab AMS |
147 | int new = 0; |
148 | MAGIC *newmg, *head, *cur, *mg; | |
149 | I32 mgs_ix = SSNEW(sizeof(MGS)); | |
6683b158 | 150 | int was_temp = SvTEMP(sv); |
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) { | |
171 | MGVTBL *vtbl = mg->mg_virtual; | |
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 | { |
8fb26106 | 227 | I32 mgs_ix; |
79072805 | 228 | MAGIC* mg; |
463ee0b2 LW |
229 | MAGIC* nextmg; |
230 | ||
455ece5e AD |
231 | mgs_ix = SSNEW(sizeof(MGS)); |
232 | save_magic(mgs_ix, sv); | |
463ee0b2 LW |
233 | |
234 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 235 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 236 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
237 | if (mg->mg_flags & MGf_GSKIP) { |
238 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 239 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 240 | } |
2b260de0 | 241 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 242 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 243 | } |
463ee0b2 | 244 | |
acfe0abc | 245 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
246 | return 0; |
247 | } | |
248 | ||
954c1994 GS |
249 | /* |
250 | =for apidoc mg_length | |
251 | ||
252 | Report on the SV's length. See C<sv_magic>. | |
253 | ||
254 | =cut | |
255 | */ | |
256 | ||
79072805 | 257 | U32 |
864dbfa3 | 258 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
259 | { |
260 | MAGIC* mg; | |
463ee0b2 | 261 | STRLEN len; |
463ee0b2 | 262 | |
79072805 LW |
263 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
264 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 265 | if (vtbl && vtbl->svt_len) { |
8fb26106 | 266 | I32 mgs_ix; |
48e43a1c | 267 | |
455ece5e AD |
268 | mgs_ix = SSNEW(sizeof(MGS)); |
269 | save_magic(mgs_ix, sv); | |
a0d0e21e | 270 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 271 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 272 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
273 | return len; |
274 | } | |
275 | } | |
276 | ||
7719e241 | 277 | if (DO_UTF8(sv)) |
5636d518 DB |
278 | { |
279 | U8 *s = (U8*)SvPV(sv, len); | |
280 | len = Perl_utf8_length(aTHX_ s, s + len); | |
281 | } | |
282 | else | |
283 | (void)SvPV(sv, len); | |
463ee0b2 | 284 | return len; |
79072805 LW |
285 | } |
286 | ||
8fb26106 | 287 | I32 |
864dbfa3 | 288 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
289 | { |
290 | MAGIC* mg; | |
291 | I32 len; | |
ac27b0f5 | 292 | |
93965878 NIS |
293 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
294 | MGVTBL* vtbl = mg->mg_virtual; | |
2b260de0 | 295 | if (vtbl && vtbl->svt_len) { |
8fb26106 | 296 | I32 mgs_ix; |
455ece5e AD |
297 | |
298 | mgs_ix = SSNEW(sizeof(MGS)); | |
299 | save_magic(mgs_ix, sv); | |
93965878 | 300 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 301 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 302 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
303 | return len; |
304 | } | |
305 | } | |
306 | ||
307 | switch(SvTYPE(sv)) { | |
308 | case SVt_PVAV: | |
309 | len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ | |
310 | return len; | |
311 | case SVt_PVHV: | |
312 | /* FIXME */ | |
313 | default: | |
cea2e8a9 | 314 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
315 | break; |
316 | } | |
317 | return 0; | |
318 | } | |
319 | ||
954c1994 GS |
320 | /* |
321 | =for apidoc mg_clear | |
322 | ||
323 | Clear something magical that the SV represents. See C<sv_magic>. | |
324 | ||
325 | =cut | |
326 | */ | |
327 | ||
79072805 | 328 | int |
864dbfa3 | 329 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 330 | { |
8fb26106 | 331 | I32 mgs_ix; |
79072805 | 332 | MAGIC* mg; |
463ee0b2 | 333 | |
455ece5e AD |
334 | mgs_ix = SSNEW(sizeof(MGS)); |
335 | save_magic(mgs_ix, sv); | |
463ee0b2 | 336 | |
79072805 LW |
337 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
338 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e | 339 | /* omit GSKIP -- never set here */ |
727405f8 | 340 | |
2b260de0 | 341 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 342 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 343 | } |
463ee0b2 | 344 | |
acfe0abc | 345 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
346 | return 0; |
347 | } | |
348 | ||
954c1994 GS |
349 | /* |
350 | =for apidoc mg_find | |
351 | ||
352 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
353 | ||
354 | =cut | |
355 | */ | |
356 | ||
93a17b20 | 357 | MAGIC* |
864dbfa3 | 358 | Perl_mg_find(pTHX_ SV *sv, int type) |
93a17b20 LW |
359 | { |
360 | MAGIC* mg; | |
3f8f4626 DC |
361 | if (!sv) |
362 | return 0; | |
93a17b20 LW |
363 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
364 | if (mg->mg_type == type) | |
365 | return mg; | |
366 | } | |
367 | return 0; | |
368 | } | |
369 | ||
954c1994 GS |
370 | /* |
371 | =for apidoc mg_copy | |
372 | ||
373 | Copies the magic from one SV to another. See C<sv_magic>. | |
374 | ||
375 | =cut | |
376 | */ | |
377 | ||
79072805 | 378 | int |
864dbfa3 | 379 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 380 | { |
463ee0b2 | 381 | int count = 0; |
79072805 | 382 | MAGIC* mg; |
463ee0b2 | 383 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
68795e93 NIS |
384 | MGVTBL* vtbl = mg->mg_virtual; |
385 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ | |
386 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
387 | } | |
388 | else if (isUPPER(mg->mg_type)) { | |
33c27489 | 389 | sv_magic(nsv, |
14befaf4 DM |
390 | mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) : |
391 | (mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj) | |
392 | ? sv : mg->mg_obj, | |
33c27489 | 393 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 394 | count++; |
79072805 | 395 | } |
79072805 | 396 | } |
463ee0b2 | 397 | return count; |
79072805 LW |
398 | } |
399 | ||
954c1994 GS |
400 | /* |
401 | =for apidoc mg_free | |
402 | ||
403 | Free any magic storage used by the SV. See C<sv_magic>. | |
404 | ||
405 | =cut | |
406 | */ | |
407 | ||
79072805 | 408 | int |
864dbfa3 | 409 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
410 | { |
411 | MAGIC* mg; | |
412 | MAGIC* moremagic; | |
413 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
414 | MGVTBL* vtbl = mg->mg_virtual; | |
415 | moremagic = mg->mg_moremagic; | |
2b260de0 | 416 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 417 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 418 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 419 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 420 | Safefree(mg->mg_ptr); |
565764a8 | 421 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 422 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 423 | } |
b881518d JH |
424 | if (mg->mg_flags & MGf_REFCOUNTED) |
425 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
426 | Safefree(mg); |
427 | } | |
428 | SvMAGIC(sv) = 0; | |
429 | return 0; | |
430 | } | |
431 | ||
79072805 | 432 | #include <signal.h> |
79072805 | 433 | |
942e002e | 434 | U32 |
864dbfa3 | 435 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 436 | { |
6cef1e77 | 437 | register REGEXP *rx; |
6cef1e77 | 438 | |
aaa362c4 | 439 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
8f580fb8 IZ |
440 | if (mg->mg_obj) /* @+ */ |
441 | return rx->nparens; | |
442 | else /* @- */ | |
443 | return rx->lastparen; | |
444 | } | |
ac27b0f5 | 445 | |
942e002e | 446 | return (U32)-1; |
6cef1e77 IZ |
447 | } |
448 | ||
449 | int | |
864dbfa3 | 450 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 451 | { |
6cef1e77 | 452 | register I32 paren; |
cf93c79d | 453 | register I32 s; |
6cef1e77 IZ |
454 | register I32 i; |
455 | register REGEXP *rx; | |
cf93c79d | 456 | I32 t; |
6cef1e77 | 457 | |
aaa362c4 | 458 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
6cef1e77 IZ |
459 | paren = mg->mg_len; |
460 | if (paren < 0) | |
461 | return 0; | |
eb160463 | 462 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
463 | (s = rx->startp[paren]) != -1 && |
464 | (t = rx->endp[paren]) != -1) | |
6cef1e77 IZ |
465 | { |
466 | if (mg->mg_obj) /* @+ */ | |
cf93c79d | 467 | i = t; |
6cef1e77 | 468 | else /* @- */ |
cf93c79d | 469 | i = s; |
727405f8 | 470 | |
a30b2f1f | 471 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
1aa99e6b | 472 | char *b = rx->subbeg; |
0064a8a9 JH |
473 | if (b) |
474 | i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i)); | |
1aa99e6b | 475 | } |
0064a8a9 JH |
476 | |
477 | sv_setiv(sv, i); | |
6cef1e77 IZ |
478 | } |
479 | } | |
480 | return 0; | |
481 | } | |
482 | ||
e4b89193 | 483 | int |
a29d06ed MG |
484 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
485 | { | |
a29d06ed | 486 | Perl_croak(aTHX_ PL_no_modify); |
e4b89193 GS |
487 | /* NOT REACHED */ |
488 | return 0; | |
a29d06ed MG |
489 | } |
490 | ||
93a17b20 | 491 | U32 |
864dbfa3 | 492 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 LW |
493 | { |
494 | register I32 paren; | |
93a17b20 | 495 | register I32 i; |
d9f97599 | 496 | register REGEXP *rx; |
a197cbdd | 497 | I32 s1, t1; |
93a17b20 LW |
498 | |
499 | switch (*mg->mg_ptr) { | |
500 | case '1': case '2': case '3': case '4': | |
501 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 502 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 503 | |
ffc61ed2 | 504 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 505 | getparen: |
eb160463 | 506 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
507 | (s1 = rx->startp[paren]) != -1 && |
508 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 509 | { |
cf93c79d | 510 | i = t1 - s1; |
a197cbdd | 511 | getlen: |
a30b2f1f | 512 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
ffc61ed2 | 513 | char *s = rx->subbeg + s1; |
a197cbdd | 514 | char *send = rx->subbeg + t1; |
ffc61ed2 | 515 | |
6d5fa195 | 516 | i = t1 - s1; |
60425c38 JH |
517 | if (is_utf8_string((U8*)s, i)) |
518 | i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send); | |
a197cbdd | 519 | } |
ffc61ed2 | 520 | if (i < 0) |
0844c848 | 521 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 522 | return i; |
93a17b20 | 523 | } |
235bddc8 NIS |
524 | else { |
525 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 526 | report_uninit(sv); |
235bddc8 NIS |
527 | } |
528 | } | |
529 | else { | |
530 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 531 | report_uninit(sv); |
93a17b20 | 532 | } |
748a9306 | 533 | return 0; |
93a17b20 | 534 | case '+': |
aaa362c4 | 535 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 536 | paren = rx->lastparen; |
13f57bf8 CS |
537 | if (paren) |
538 | goto getparen; | |
93a17b20 | 539 | } |
748a9306 | 540 | return 0; |
a01268b5 JH |
541 | case '\016': /* ^N */ |
542 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
543 | paren = rx->lastcloseparen; | |
544 | if (paren) | |
545 | goto getparen; | |
546 | } | |
547 | return 0; | |
93a17b20 | 548 | case '`': |
aaa362c4 | 549 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
550 | if (rx->startp[0] != -1) { |
551 | i = rx->startp[0]; | |
a197cbdd GS |
552 | if (i > 0) { |
553 | s1 = 0; | |
554 | t1 = i; | |
555 | goto getlen; | |
556 | } | |
93a17b20 | 557 | } |
93a17b20 | 558 | } |
748a9306 | 559 | return 0; |
93a17b20 | 560 | case '\'': |
aaa362c4 | 561 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
562 | if (rx->endp[0] != -1) { |
563 | i = rx->sublen - rx->endp[0]; | |
a197cbdd GS |
564 | if (i > 0) { |
565 | s1 = rx->endp[0]; | |
566 | t1 = rx->sublen; | |
567 | goto getlen; | |
568 | } | |
93a17b20 | 569 | } |
93a17b20 | 570 | } |
748a9306 | 571 | return 0; |
93a17b20 LW |
572 | } |
573 | magic_get(sv,mg); | |
2d8e6c8d GS |
574 | if (!SvPOK(sv) && SvNIOK(sv)) { |
575 | STRLEN n_a; | |
576 | sv_2pv(sv, &n_a); | |
577 | } | |
93a17b20 LW |
578 | if (SvPOK(sv)) |
579 | return SvCUR(sv); | |
580 | return 0; | |
581 | } | |
582 | ||
79072805 | 583 | int |
864dbfa3 | 584 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
585 | { |
586 | register I32 paren; | |
35272f84 | 587 | register char *s = NULL; |
79072805 | 588 | register I32 i; |
d9f97599 | 589 | register REGEXP *rx; |
79072805 LW |
590 | |
591 | switch (*mg->mg_ptr) { | |
748a9306 | 592 | case '\001': /* ^A */ |
3280af22 | 593 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 594 | break; |
49460fe6 NIS |
595 | case '\003': /* ^C */ |
596 | sv_setiv(sv, (IV)PL_minus_c); | |
597 | break; | |
598 | ||
79072805 | 599 | case '\004': /* ^D */ |
aea4f609 | 600 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 601 | break; |
28f23441 | 602 | case '\005': /* ^E */ |
0a378802 | 603 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 604 | #ifdef MACOS_TRADITIONAL |
0a378802 JH |
605 | { |
606 | char msg[256]; | |
727405f8 | 607 | |
0a378802 | 608 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 609 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 610 | } |
727405f8 | 611 | #else |
28f23441 | 612 | #ifdef VMS |
0a378802 JH |
613 | { |
614 | # include <descrip.h> | |
615 | # include <starlet.h> | |
616 | char msg[255]; | |
617 | $DESCRIPTOR(msgdsc,msg); | |
618 | sv_setnv(sv,(NV) vaxc$errno); | |
619 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
620 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
621 | else | |
622 | sv_setpv(sv,""); | |
623 | } | |
28f23441 | 624 | #else |
88e89b8a | 625 | #ifdef OS2 |
0a378802 JH |
626 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
627 | sv_setnv(sv, (NV)errno); | |
628 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
629 | } else { | |
630 | if (errno != errno_isOS2) { | |
631 | int tmp = _syserrno(); | |
632 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
633 | Perl_rc = tmp; | |
634 | } | |
635 | sv_setnv(sv, (NV)Perl_rc); | |
636 | sv_setpv(sv, os2error(Perl_rc)); | |
637 | } | |
88e89b8a | 638 | #else |
22fae026 | 639 | #ifdef WIN32 |
0a378802 JH |
640 | { |
641 | DWORD dwErr = GetLastError(); | |
642 | sv_setnv(sv, (NV)dwErr); | |
643 | if (dwErr) | |
644 | { | |
645 | PerlProc_GetOSError(sv, dwErr); | |
646 | } | |
647 | else | |
648 | sv_setpv(sv, ""); | |
649 | SetLastError(dwErr); | |
650 | } | |
22fae026 | 651 | #else |
f6c8f21d RGS |
652 | { |
653 | int saveerrno = errno; | |
654 | sv_setnv(sv, (NV)errno); | |
655 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
656 | errno = saveerrno; | |
657 | } | |
28f23441 | 658 | #endif |
88e89b8a | 659 | #endif |
22fae026 | 660 | #endif |
cd39f2b6 | 661 | #endif |
0a378802 JH |
662 | SvNOK_on(sv); /* what a wonderful hack! */ |
663 | } | |
664 | else if (strEQ(mg->mg_ptr+1, "NCODING")) | |
665 | sv_setsv(sv, PL_encoding); | |
666 | break; | |
79072805 | 667 | case '\006': /* ^F */ |
3280af22 | 668 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 669 | break; |
a0d0e21e | 670 | case '\010': /* ^H */ |
3280af22 | 671 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 672 | break; |
9d116dd7 | 673 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
674 | if (PL_inplace) |
675 | sv_setpv(sv, PL_inplace); | |
79072805 | 676 | else |
3280af22 | 677 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 678 | break; |
ac27b0f5 | 679 | case '\017': /* ^O & ^OPEN */ |
3511154c | 680 | if (*(mg->mg_ptr+1) == '\0') { |
ac27b0f5 | 681 | sv_setpv(sv, PL_osname); |
3511154c DM |
682 | SvTAINTED_off(sv); |
683 | } | |
ac27b0f5 NIS |
684 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
685 | if (!PL_compiling.cop_io) | |
686 | sv_setsv(sv, &PL_sv_undef); | |
687 | else { | |
688 | sv_setsv(sv, PL_compiling.cop_io); | |
689 | } | |
690 | } | |
28f23441 | 691 | break; |
79072805 | 692 | case '\020': /* ^P */ |
3280af22 | 693 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 694 | break; |
fb73857a | 695 | case '\023': /* ^S */ |
4ffa73a3 | 696 | if (*(mg->mg_ptr+1) == '\0') { |
3280af22 | 697 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 | 698 | SvOK_off(sv); |
3280af22 | 699 | else if (PL_in_eval) |
6dc8a9e4 | 700 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
701 | else |
702 | sv_setiv(sv, 0); | |
d58bf5aa | 703 | } |
fb73857a | 704 | break; |
79072805 | 705 | case '\024': /* ^T */ |
7c36658b | 706 | if (*(mg->mg_ptr+1) == '\0') { |
88e89b8a | 707 | #ifdef BIG_TIME |
7c36658b | 708 | sv_setnv(sv, PL_basetime); |
88e89b8a | 709 | #else |
7c36658b | 710 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 711 | #endif |
7c36658b MS |
712 | } |
713 | else if (strEQ(mg->mg_ptr, "\024AINT")) | |
9aa05f58 RGS |
714 | sv_setiv(sv, PL_tainting |
715 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
716 | : 0); | |
7c36658b | 717 | break; |
a05d7ebb JH |
718 | case '\025': /* $^UNICODE */ |
719 | if (strEQ(mg->mg_ptr, "\025NICODE")) | |
720 | sv_setuv(sv, (UV) PL_unicode); | |
fde18df1 JH |
721 | break; |
722 | case '\027': /* ^W & $^WARNING_BITS */ | |
4438c4b7 JH |
723 | if (*(mg->mg_ptr+1) == '\0') |
724 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
0a378802 | 725 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
d3a7d8c7 GS |
726 | if (PL_compiling.cop_warnings == pWARN_NONE || |
727 | PL_compiling.cop_warnings == pWARN_STD) | |
4438c4b7 JH |
728 | { |
729 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
730 | } | |
d3a7d8c7 | 731 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
732 | /* Get the bit mask for $warnings::Bits{all}, because |
733 | * it could have been extended by warnings::register */ | |
734 | SV **bits_all; | |
735 | HV *bits=get_hv("warnings::Bits", FALSE); | |
736 | if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) { | |
737 | sv_setsv(sv, *bits_all); | |
738 | } | |
739 | else { | |
740 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
741 | } | |
ac27b0f5 | 742 | } |
4438c4b7 JH |
743 | else { |
744 | sv_setsv(sv, PL_compiling.cop_warnings); | |
ac27b0f5 | 745 | } |
d3a7d8c7 | 746 | SvPOK_only(sv); |
4438c4b7 | 747 | } |
79072805 LW |
748 | break; |
749 | case '1': case '2': case '3': case '4': | |
750 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 751 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
752 | I32 s1, t1; |
753 | ||
a863c7d1 MB |
754 | /* |
755 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
756 | * XXX Does the new way break anything? | |
757 | */ | |
ffc61ed2 | 758 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 | 759 | getparen: |
eb160463 | 760 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
761 | (s1 = rx->startp[paren]) != -1 && |
762 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 763 | { |
cf93c79d IZ |
764 | i = t1 - s1; |
765 | s = rx->subbeg + s1; | |
01ec43d0 | 766 | if (!rx->subbeg) |
c2e66d9e GS |
767 | break; |
768 | ||
13f57bf8 | 769 | getrx: |
748a9306 | 770 | if (i >= 0) { |
cf93c79d | 771 | sv_setpvn(sv, s, i); |
a30b2f1f | 772 | if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i)) |
7e2040f0 GS |
773 | SvUTF8_on(sv); |
774 | else | |
775 | SvUTF8_off(sv); | |
e9814ee1 HS |
776 | if (PL_tainting) { |
777 | if (RX_MATCH_TAINTED(rx)) { | |
778 | MAGIC* mg = SvMAGIC(sv); | |
779 | MAGIC* mgt; | |
780 | PL_tainted = 1; | |
781 | SvMAGIC(sv) = mg->mg_moremagic; | |
782 | SvTAINT(sv); | |
783 | if ((mgt = SvMAGIC(sv))) { | |
784 | mg->mg_moremagic = mgt; | |
785 | SvMAGIC(sv) = mg; | |
786 | } | |
787 | } else | |
788 | SvTAINTED_off(sv); | |
789 | } | |
748a9306 LW |
790 | break; |
791 | } | |
79072805 | 792 | } |
79072805 | 793 | } |
3280af22 | 794 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
795 | break; |
796 | case '+': | |
aaa362c4 | 797 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 798 | paren = rx->lastparen; |
a0d0e21e LW |
799 | if (paren) |
800 | goto getparen; | |
79072805 | 801 | } |
3280af22 | 802 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 803 | break; |
a01268b5 JH |
804 | case '\016': /* ^N */ |
805 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
806 | paren = rx->lastcloseparen; | |
807 | if (paren) | |
808 | goto getparen; | |
809 | } | |
810 | sv_setsv(sv,&PL_sv_undef); | |
811 | break; | |
79072805 | 812 | case '`': |
aaa362c4 | 813 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
814 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
815 | i = rx->startp[0]; | |
13f57bf8 | 816 | goto getrx; |
79072805 | 817 | } |
79072805 | 818 | } |
3280af22 | 819 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
820 | break; |
821 | case '\'': | |
aaa362c4 | 822 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
823 | if (rx->subbeg && rx->endp[0] != -1) { |
824 | s = rx->subbeg + rx->endp[0]; | |
825 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 826 | goto getrx; |
79072805 | 827 | } |
79072805 | 828 | } |
3280af22 | 829 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
830 | break; |
831 | case '.': | |
832 | #ifndef lint | |
3280af22 | 833 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 834 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 LW |
835 | } |
836 | #endif | |
837 | break; | |
838 | case '?': | |
809a5acc | 839 | { |
809a5acc | 840 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 841 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
842 | LvTARGOFF(sv) = PL_statusvalue; |
843 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 844 | #endif |
809a5acc | 845 | } |
79072805 LW |
846 | break; |
847 | case '^': | |
0daa599b RGS |
848 | if (GvIOp(PL_defoutgv)) |
849 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
850 | if (s) |
851 | sv_setpv(sv,s); | |
852 | else { | |
3280af22 | 853 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
854 | sv_catpv(sv,"_TOP"); |
855 | } | |
856 | break; | |
857 | case '~': | |
0daa599b RGS |
858 | if (GvIOp(PL_defoutgv)) |
859 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 860 | if (!s) |
3280af22 | 861 | s = GvENAME(PL_defoutgv); |
79072805 LW |
862 | sv_setpv(sv,s); |
863 | break; | |
864 | #ifndef lint | |
865 | case '=': | |
0daa599b RGS |
866 | if (GvIOp(PL_defoutgv)) |
867 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
868 | break; |
869 | case '-': | |
0daa599b RGS |
870 | if (GvIOp(PL_defoutgv)) |
871 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
872 | break; |
873 | case '%': | |
0daa599b RGS |
874 | if (GvIOp(PL_defoutgv)) |
875 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 LW |
876 | break; |
877 | #endif | |
878 | case ':': | |
879 | break; | |
880 | case '/': | |
881 | break; | |
882 | case '[': | |
3280af22 | 883 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
884 | break; |
885 | case '|': | |
0daa599b RGS |
886 | if (GvIOp(PL_defoutgv)) |
887 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
888 | break; |
889 | case ',': | |
79072805 LW |
890 | break; |
891 | case '\\': | |
b2ce0fda | 892 | if (PL_ors_sv) |
f28098ff | 893 | sv_copypv(sv, PL_ors_sv); |
79072805 LW |
894 | break; |
895 | case '#': | |
3280af22 | 896 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
897 | break; |
898 | case '!': | |
a5f75d66 | 899 | #ifdef VMS |
65202027 | 900 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 901 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 902 | #else |
88e89b8a | 903 | { |
904 | int saveerrno = errno; | |
65202027 | 905 | sv_setnv(sv, (NV)errno); |
88e89b8a | 906 | #ifdef OS2 |
ed344e4f IZ |
907 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
908 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 909 | else |
a5f75d66 | 910 | #endif |
2304df62 | 911 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 912 | errno = saveerrno; |
913 | } | |
914 | #endif | |
946ec16e | 915 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
916 | break; |
917 | case '<': | |
3280af22 | 918 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
919 | break; |
920 | case '>': | |
3280af22 | 921 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
922 | break; |
923 | case '(': | |
3280af22 | 924 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 925 | #ifdef HAS_GETGROUPS |
785fb66b | 926 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 927 | #endif |
79072805 LW |
928 | goto add_groups; |
929 | case ')': | |
3280af22 | 930 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 931 | #ifdef HAS_GETGROUPS |
785fb66b | 932 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 933 | #endif |
79072805 | 934 | add_groups: |
79072805 | 935 | #ifdef HAS_GETGROUPS |
79072805 | 936 | { |
a0d0e21e | 937 | Groups_t gary[NGROUPS]; |
79072805 | 938 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 939 | while (--i >= 0) |
785fb66b | 940 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
941 | } |
942 | #endif | |
155aba94 | 943 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 | 944 | break; |
cd39f2b6 | 945 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
946 | case '0': |
947 | break; | |
cd39f2b6 | 948 | #endif |
79072805 | 949 | } |
a0d0e21e | 950 | return 0; |
79072805 LW |
951 | } |
952 | ||
953 | int | |
864dbfa3 | 954 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
955 | { |
956 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
957 | ||
958 | if (uf && uf->uf_val) | |
24f81a43 | 959 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
960 | return 0; |
961 | } | |
962 | ||
963 | int | |
864dbfa3 | 964 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
965 | { |
966 | register char *s; | |
88e89b8a | 967 | char *ptr; |
5aabfad6 | 968 | STRLEN len, klen; |
1e422769 | 969 | |
a0d0e21e | 970 | s = SvPV(sv,len); |
5aabfad6 | 971 | ptr = MgPV(mg,klen); |
88e89b8a | 972 | my_setenv(ptr, s); |
1e422769 | 973 | |
a0d0e21e LW |
974 | #ifdef DYNAMIC_ENV_FETCH |
975 | /* We just undefd an environment var. Is a replacement */ | |
976 | /* waiting in the wings? */ | |
977 | if (!len) { | |
5aabfad6 | 978 | SV **valp; |
6b88bc9c | 979 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 980 | s = SvPV(*valp, len); |
a0d0e21e LW |
981 | } |
982 | #endif | |
1e422769 | 983 | |
39e571d4 | 984 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
985 | /* And you'll never guess what the dog had */ |
986 | /* in its mouth... */ | |
3280af22 | 987 | if (PL_tainting) { |
1e422769 | 988 | MgTAINTEDDIR_off(mg); |
989 | #ifdef VMS | |
5aabfad6 | 990 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 991 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
c623ac67 | 992 | Stat_t sbuf; |
1e422769 | 993 | int i = 0, j = 0; |
994 | ||
995 | do { /* DCL$PATH may be a search list */ | |
996 | while (1) { /* as may dev portion of any element */ | |
997 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
998 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
999 | cando_by_name(S_IWUSR,0,elt) ) { | |
1000 | MgTAINTEDDIR_on(mg); | |
1001 | return 0; | |
1002 | } | |
1003 | } | |
1004 | if ((cp = strchr(elt, ':')) != Nullch) | |
1005 | *cp = '\0'; | |
1006 | if (my_trnlnm(elt, eltbuf, j++)) | |
1007 | elt = eltbuf; | |
1008 | else | |
1009 | break; | |
1010 | } | |
1011 | j = 0; | |
1012 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1013 | } | |
1014 | #endif /* VMS */ | |
5aabfad6 | 1015 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 1016 | char *strend = s + len; |
463ee0b2 LW |
1017 | |
1018 | while (s < strend) { | |
96827780 | 1019 | char tmpbuf[256]; |
c623ac67 | 1020 | Stat_t st; |
5f74f29c | 1021 | I32 i; |
96827780 | 1022 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 1023 | s, strend, ':', &i); |
463ee0b2 | 1024 | s++; |
96827780 MB |
1025 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
1026 | || *tmpbuf != '/' | |
c6ed36e1 | 1027 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1028 | MgTAINTEDDIR_on(mg); |
1e422769 | 1029 | return 0; |
1030 | } | |
463ee0b2 | 1031 | } |
79072805 LW |
1032 | } |
1033 | } | |
39e571d4 | 1034 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1035 | |
79072805 LW |
1036 | return 0; |
1037 | } | |
1038 | ||
1039 | int | |
864dbfa3 | 1040 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1041 | { |
2d8e6c8d GS |
1042 | STRLEN n_a; |
1043 | my_setenv(MgPV(mg,n_a),Nullch); | |
85e6fe83 LW |
1044 | return 0; |
1045 | } | |
1046 | ||
88e89b8a | 1047 | int |
864dbfa3 | 1048 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1049 | { |
1050 | #if defined(VMS) | |
cea2e8a9 | 1051 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1052 | #else |
3280af22 | 1053 | if (PL_localizing) { |
fb73857a | 1054 | HE* entry; |
2d8e6c8d | 1055 | STRLEN n_a; |
fb73857a | 1056 | magic_clear_all_env(sv,mg); |
1057 | hv_iterinit((HV*)sv); | |
155aba94 | 1058 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1059 | I32 keylen; |
1060 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 1061 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 1062 | } |
1063 | } | |
1064 | #endif | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | int | |
864dbfa3 | 1069 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1070 | { |
2f42fcb0 | 1071 | #ifndef PERL_MICRO |
ed79a026 | 1072 | #if defined(VMS) || defined(EPOC) |
cea2e8a9 | 1073 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 1074 | #else |
4efc5df6 | 1075 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) |
7766f137 | 1076 | PerlEnv_clearenv(); |
4efc5df6 GS |
1077 | # else |
1078 | # ifdef USE_ENVIRON_ARRAY | |
1079 | # if defined(USE_ITHREADS) | |
1080 | /* only the parent thread can clobber the process environment */ | |
1081 | if (PL_curinterp == aTHX) | |
1082 | # endif | |
1083 | { | |
1084 | # ifndef PERL_USE_SAFE_PUTENV | |
50acdf95 | 1085 | if (!PL_use_safe_putenv) { |
66b1d557 HM |
1086 | I32 i; |
1087 | ||
3280af22 | 1088 | if (environ == PL_origenviron) |
f2517201 | 1089 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
1090 | else |
1091 | for (i = 0; environ[i]; i++) | |
f2517201 | 1092 | safesysfree(environ[i]); |
50acdf95 | 1093 | } |
4efc5df6 | 1094 | # endif /* PERL_USE_SAFE_PUTENV */ |
f2517201 | 1095 | |
66b1d557 | 1096 | environ[0] = Nullch; |
4efc5df6 GS |
1097 | } |
1098 | # endif /* USE_ENVIRON_ARRAY */ | |
052c2dc6 | 1099 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ |
2f42fcb0 JH |
1100 | #endif /* VMS || EPOC */ |
1101 | #endif /* !PERL_MICRO */ | |
3e3baf6d | 1102 | return 0; |
66b1d557 HM |
1103 | } |
1104 | ||
2e34cc90 CL |
1105 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS)||defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1106 | static int sig_handlers_initted = 0; | |
1107 | #endif | |
7719e241 | 1108 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1109 | static int sig_ignoring[SIG_SIZE]; /* which signals we are ignoring */ |
1110 | #endif | |
2e34cc90 CL |
1111 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1112 | static int sig_defaulting[SIG_SIZE]; | |
1113 | #endif | |
85b332e2 | 1114 | |
64ca3a65 | 1115 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1116 | #ifdef HAS_SIGPROCMASK |
1117 | static void | |
1118 | restore_sigmask(pTHX_ SV *save_sv) | |
1119 | { | |
1120 | sigset_t *ossetp = (sigset_t *) SvPV_nolen( save_sv ); | |
1121 | (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0); | |
1122 | } | |
1123 | #endif | |
66b1d557 | 1124 | int |
864dbfa3 | 1125 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1126 | { |
1127 | I32 i; | |
2d8e6c8d | 1128 | STRLEN n_a; |
88e89b8a | 1129 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 1130 | i = whichsig(MgPV(mg,n_a)); |
e02bfb16 | 1131 | if (i > 0) { |
22c35a8c GS |
1132 | if(PL_psig_ptr[i]) |
1133 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1134 | else { |
85b332e2 | 1135 | Sighandler_t sigstate; |
2e34cc90 | 1136 | sigstate = rsignal_state(i); |
23ada85b | 1137 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
2e34cc90 CL |
1138 | if (sig_handlers_initted && sig_ignoring[i]) sigstate = SIG_IGN; |
1139 | #endif | |
1140 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1141 | if (sig_handlers_initted && sig_defaulting[i]) sigstate = SIG_DFL; | |
85b332e2 | 1142 | #endif |
88e89b8a | 1143 | /* cache state so we don't fetch it again */ |
ff68c719 | 1144 | if(sigstate == SIG_IGN) |
88e89b8a | 1145 | sv_setpv(sv,"IGNORE"); |
1146 | else | |
3280af22 | 1147 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 1148 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1149 | SvTEMP_off(sv); |
1150 | } | |
1151 | } | |
1152 | return 0; | |
1153 | } | |
1154 | int | |
864dbfa3 | 1155 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1156 | { |
2d4fcd5e AJ |
1157 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1158 | * refactoring might be in order. | |
1159 | */ | |
1160 | register char *s; | |
2d8e6c8d | 1161 | STRLEN n_a; |
2d4fcd5e AJ |
1162 | SV* to_dec; |
1163 | s = MgPV(mg,n_a); | |
1164 | if (*s == '_') { | |
1165 | SV** svp; | |
1166 | if (strEQ(s,"__DIE__")) | |
1167 | svp = &PL_diehook; | |
1168 | else if (strEQ(s,"__WARN__")) | |
1169 | svp = &PL_warnhook; | |
1170 | else | |
1171 | Perl_croak(aTHX_ "No such hook: %s", s); | |
1172 | if (*svp) { | |
1173 | to_dec = *svp; | |
1174 | *svp = 0; | |
1175 | SvREFCNT_dec(to_dec); | |
1176 | } | |
1177 | } | |
1178 | else { | |
1179 | I32 i; | |
1180 | /* Are we clearing a signal entry? */ | |
1181 | i = whichsig(s); | |
e02bfb16 | 1182 | if (i > 0) { |
2d4fcd5e AJ |
1183 | #ifdef HAS_SIGPROCMASK |
1184 | sigset_t set, save; | |
1185 | SV* save_sv; | |
1186 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1187 | sigemptyset(&set); | |
1188 | sigaddset(&set,i); | |
1189 | sigprocmask(SIG_BLOCK, &set, &save); | |
1190 | ENTER; | |
1191 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1192 | SAVEFREESV(save_sv); | |
1193 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1194 | #endif | |
1195 | PERL_ASYNC_CHECK(); | |
1196 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
1197 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1198 | #endif | |
1199 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
1200 | sig_defaulting[i] = 1; | |
5c1546dc | 1201 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1202 | #else |
1203 | (void)rsignal(i, SIG_DFL); | |
1204 | #endif | |
1205 | if(PL_psig_name[i]) { | |
1206 | SvREFCNT_dec(PL_psig_name[i]); | |
1207 | PL_psig_name[i]=0; | |
1208 | } | |
1209 | if(PL_psig_ptr[i]) { | |
1210 | to_dec=PL_psig_ptr[i]; | |
1211 | PL_psig_ptr[i]=0; | |
1212 | LEAVE; | |
1213 | SvREFCNT_dec(to_dec); | |
1214 | } | |
1215 | else | |
1216 | LEAVE; | |
1217 | } | |
88e89b8a | 1218 | } |
1219 | return 0; | |
1220 | } | |
3d37d572 | 1221 | |
0a8e0eff NIS |
1222 | void |
1223 | Perl_raise_signal(pTHX_ int sig) | |
1224 | { | |
1225 | /* Set a flag to say this signal is pending */ | |
1226 | PL_psig_pend[sig]++; | |
1227 | /* And one to say _a_ signal is pending */ | |
1228 | PL_sig_pending = 1; | |
1229 | } | |
1230 | ||
1231 | Signal_t | |
1232 | Perl_csighandler(int sig) | |
1233 | { | |
1018e26f NIS |
1234 | #ifdef PERL_GET_SIG_CONTEXT |
1235 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1236 | #else | |
85b332e2 CL |
1237 | dTHX; |
1238 | #endif | |
23ada85b | 1239 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1240 | (void) rsignal(sig, PL_csighandlerp); |
85b332e2 CL |
1241 | if (sig_ignoring[sig]) return; |
1242 | #endif | |
2e34cc90 | 1243 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
7719e241 | 1244 | if (sig_defaulting[sig]) |
2e34cc90 CL |
1245 | #ifdef KILL_BY_SIGPRC |
1246 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1247 | #else | |
1248 | exit(1); | |
1249 | #endif | |
1250 | #endif | |
4ffa73a3 JH |
1251 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
1252 | /* Call the perl level handler now-- | |
1253 | * with risk we may be in malloc() etc. */ | |
1254 | (*PL_sighandlerp)(sig); | |
1255 | else | |
1256 | Perl_raise_signal(aTHX_ sig); | |
0a8e0eff NIS |
1257 | } |
1258 | ||
2e34cc90 CL |
1259 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1260 | void | |
1261 | Perl_csighandler_init(void) | |
1262 | { | |
1263 | int sig; | |
1264 | if (sig_handlers_initted) return; | |
1265 | ||
1266 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1267 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1268 | dTHX; |
2e34cc90 | 1269 | sig_defaulting[sig] = 1; |
5c1546dc | 1270 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1271 | #endif |
1272 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
1273 | sig_ignoring[sig] = 0; | |
1274 | #endif | |
1275 | } | |
1276 | sig_handlers_initted = 1; | |
1277 | } | |
1278 | #endif | |
1279 | ||
0a8e0eff NIS |
1280 | void |
1281 | Perl_despatch_signals(pTHX) | |
1282 | { | |
1283 | int sig; | |
1284 | PL_sig_pending = 0; | |
1285 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1286 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1287 | PERL_BLOCKSIG_ADD(set, sig); |
1288 | PL_psig_pend[sig] = 0; | |
1289 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1290 | (*PL_sighandlerp)(sig); |
25da4428 | 1291 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1292 | } |
1293 | } | |
1294 | } | |
1295 | ||
85e6fe83 | 1296 | int |
864dbfa3 | 1297 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1298 | { |
1299 | register char *s; | |
1300 | I32 i; | |
b7953727 | 1301 | SV** svp = 0; |
2d4fcd5e AJ |
1302 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1303 | * effects (due to closures). We must make sure that the new disposition | |
1304 | * is in place before it is called. | |
1305 | */ | |
1306 | SV* to_dec = 0; | |
e72dc28c | 1307 | STRLEN len; |
2d4fcd5e AJ |
1308 | #ifdef HAS_SIGPROCMASK |
1309 | sigset_t set, save; | |
1310 | SV* save_sv; | |
1311 | #endif | |
a0d0e21e | 1312 | |
e72dc28c | 1313 | s = MgPV(mg,len); |
748a9306 LW |
1314 | if (*s == '_') { |
1315 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1316 | svp = &PL_diehook; |
748a9306 | 1317 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1318 | svp = &PL_warnhook; |
748a9306 | 1319 | else |
cea2e8a9 | 1320 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1321 | i = 0; |
4633a7c4 | 1322 | if (*svp) { |
2d4fcd5e | 1323 | to_dec = *svp; |
4633a7c4 LW |
1324 | *svp = 0; |
1325 | } | |
748a9306 LW |
1326 | } |
1327 | else { | |
1328 | i = whichsig(s); /* ...no, a brick */ | |
e02bfb16 | 1329 | if (i < 0) { |
e476b1b5 | 1330 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1331 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1332 | return 0; |
1333 | } | |
2d4fcd5e AJ |
1334 | #ifdef HAS_SIGPROCMASK |
1335 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1336 | sigemptyset(&set); | |
1337 | sigaddset(&set,i); | |
1338 | sigprocmask(SIG_BLOCK, &set, &save); | |
1339 | ENTER; | |
1340 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1341 | SAVEFREESV(save_sv); | |
1342 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1343 | #endif | |
1344 | PERL_ASYNC_CHECK(); | |
2e34cc90 CL |
1345 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1346 | if (!sig_handlers_initted) Perl_csighandler_init(); | |
1347 | #endif | |
23ada85b | 1348 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 CL |
1349 | sig_ignoring[i] = 0; |
1350 | #endif | |
2e34cc90 | 1351 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
2d4fcd5e | 1352 | sig_defaulting[i] = 0; |
2e34cc90 | 1353 | #endif |
22c35a8c | 1354 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1355 | to_dec = PL_psig_ptr[i]; |
22c35a8c | 1356 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1357 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1358 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1359 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1360 | } |
a0d0e21e | 1361 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1362 | if (i) { |
5c1546dc | 1363 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1364 | #ifdef HAS_SIGPROCMASK |
1365 | LEAVE; | |
1366 | #endif | |
1367 | } | |
748a9306 LW |
1368 | else |
1369 | *svp = SvREFCNT_inc(sv); | |
2d4fcd5e AJ |
1370 | if(to_dec) |
1371 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1372 | return 0; |
1373 | } | |
e72dc28c | 1374 | s = SvPV_force(sv,len); |
748a9306 | 1375 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1376 | if (i) { |
23ada85b | 1377 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
85b332e2 | 1378 | sig_ignoring[i] = 1; |
5c1546dc | 1379 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1380 | #else |
ff68c719 | 1381 | (void)rsignal(i, SIG_IGN); |
85b332e2 | 1382 | #endif |
2d4fcd5e | 1383 | } |
748a9306 LW |
1384 | } |
1385 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1386 | if (i) | |
2e34cc90 CL |
1387 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1388 | { | |
1389 | sig_defaulting[i] = 1; | |
5c1546dc | 1390 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1391 | } |
1392 | #else | |
ff68c719 | 1393 | (void)rsignal(i, SIG_DFL); |
2e34cc90 | 1394 | #endif |
748a9306 | 1395 | } |
79072805 | 1396 | else { |
5aabfad6 | 1397 | /* |
1398 | * We should warn if HINT_STRICT_REFS, but without | |
1399 | * access to a known hint bit in a known OP, we can't | |
1400 | * tell whether HINT_STRICT_REFS is in force or not. | |
1401 | */ | |
46fc3d4c | 1402 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 1403 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 1404 | if (i) |
5c1546dc | 1405 | (void)rsignal(i, PL_csighandlerp); |
748a9306 LW |
1406 | else |
1407 | *svp = SvREFCNT_inc(sv); | |
79072805 | 1408 | } |
2d4fcd5e AJ |
1409 | #ifdef HAS_SIGPROCMASK |
1410 | if(i) | |
1411 | LEAVE; | |
1412 | #endif | |
1413 | if(to_dec) | |
1414 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1415 | return 0; |
1416 | } | |
64ca3a65 | 1417 | #endif /* !PERL_MICRO */ |
79072805 LW |
1418 | |
1419 | int | |
864dbfa3 | 1420 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1421 | { |
3280af22 | 1422 | PL_sub_generation++; |
463ee0b2 LW |
1423 | return 0; |
1424 | } | |
1425 | ||
1426 | int | |
864dbfa3 | 1427 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1428 | { |
a0d0e21e | 1429 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1430 | PL_amagic_generation++; |
463ee0b2 | 1431 | |
a0d0e21e LW |
1432 | return 0; |
1433 | } | |
463ee0b2 | 1434 | |
946ec16e | 1435 | int |
864dbfa3 | 1436 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1437 | { |
1438 | HV *hv = (HV*)LvTARG(sv); | |
6ff81951 | 1439 | I32 i = 0; |
7719e241 | 1440 | |
6ff81951 | 1441 | if (hv) { |
497b47a8 JH |
1442 | (void) hv_iterinit(hv); |
1443 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1444 | i = HvKEYS(hv); | |
1445 | else { | |
1446 | while (hv_iternext(hv)) | |
1447 | i++; | |
1448 | } | |
6ff81951 GS |
1449 | } |
1450 | ||
1451 | sv_setiv(sv, (IV)i); | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | int | |
864dbfa3 | 1456 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1457 | { |
1458 | if (LvTARG(sv)) { | |
1459 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1460 | } |
1461 | return 0; | |
ac27b0f5 | 1462 | } |
946ec16e | 1463 | |
e336de0d | 1464 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1465 | STATIC int |
cea2e8a9 | 1466 | S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1467 | { |
1468 | dSP; | |
463ee0b2 | 1469 | |
924508f0 GS |
1470 | PUSHMARK(SP); |
1471 | EXTEND(SP, n); | |
33c27489 | 1472 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1473 | if (n > 1) { |
93965878 | 1474 | if (mg->mg_ptr) { |
565764a8 | 1475 | if (mg->mg_len >= 0) |
79cb57f6 | 1476 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1477 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1478 | PUSHs((SV*)mg->mg_ptr); |
1479 | } | |
14befaf4 | 1480 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1481 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1482 | } |
1483 | } | |
1484 | if (n > 2) { | |
1485 | PUSHs(val); | |
88e89b8a | 1486 | } |
463ee0b2 LW |
1487 | PUTBACK; |
1488 | ||
864dbfa3 | 1489 | return call_method(meth, flags); |
946ec16e | 1490 | } |
1491 | ||
76e3520e | 1492 | STATIC int |
cea2e8a9 | 1493 | S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth) |
a0d0e21e LW |
1494 | { |
1495 | dSP; | |
463ee0b2 | 1496 | |
a0d0e21e LW |
1497 | ENTER; |
1498 | SAVETMPS; | |
e788e7d3 | 1499 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1500 | |
33c27489 | 1501 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1502 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1503 | } |
463ee0b2 | 1504 | |
d3acc0f7 | 1505 | POPSTACK; |
a0d0e21e LW |
1506 | FREETMPS; |
1507 | LEAVE; | |
1508 | return 0; | |
1509 | } | |
463ee0b2 | 1510 | |
a0d0e21e | 1511 | int |
864dbfa3 | 1512 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1513 | { |
a0d0e21e LW |
1514 | if (mg->mg_ptr) |
1515 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1516 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1517 | return 0; |
1518 | } | |
1519 | ||
1520 | int | |
864dbfa3 | 1521 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d GS |
1522 | { |
1523 | dSP; | |
a60c0954 | 1524 | ENTER; |
e788e7d3 | 1525 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1526 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1527 | POPSTACK; |
a60c0954 | 1528 | LEAVE; |
463ee0b2 LW |
1529 | return 0; |
1530 | } | |
1531 | ||
1532 | int | |
864dbfa3 | 1533 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1534 | { |
a0d0e21e LW |
1535 | return magic_methpack(sv,mg,"DELETE"); |
1536 | } | |
463ee0b2 | 1537 | |
93965878 NIS |
1538 | |
1539 | U32 | |
864dbfa3 | 1540 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1541 | { |
e336de0d | 1542 | dSP; |
93965878 NIS |
1543 | U32 retval = 0; |
1544 | ||
1545 | ENTER; | |
1546 | SAVETMPS; | |
e788e7d3 | 1547 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1548 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1549 | sv = *PL_stack_sp--; |
a60c0954 | 1550 | retval = (U32) SvIV(sv)-1; |
93965878 | 1551 | } |
d3acc0f7 | 1552 | POPSTACK; |
93965878 NIS |
1553 | FREETMPS; |
1554 | LEAVE; | |
1555 | return retval; | |
1556 | } | |
1557 | ||
cea2e8a9 GS |
1558 | int |
1559 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e LW |
1560 | { |
1561 | dSP; | |
463ee0b2 | 1562 | |
e336de0d | 1563 | ENTER; |
e788e7d3 | 1564 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1565 | PUSHMARK(SP); |
33c27489 | 1566 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1567 | PUTBACK; |
864dbfa3 | 1568 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1569 | POPSTACK; |
a60c0954 | 1570 | LEAVE; |
a3bcc51e | 1571 | |
463ee0b2 LW |
1572 | return 0; |
1573 | } | |
1574 | ||
1575 | int | |
864dbfa3 | 1576 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1577 | { |
463ee0b2 | 1578 | dSP; |
dff6d3cd | 1579 | const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1580 | |
1581 | ENTER; | |
a0d0e21e | 1582 | SAVETMPS; |
e788e7d3 | 1583 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1584 | PUSHMARK(SP); |
1585 | EXTEND(SP, 2); | |
33c27489 | 1586 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1587 | if (SvOK(key)) |
1588 | PUSHs(key); | |
1589 | PUTBACK; | |
1590 | ||
864dbfa3 | 1591 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1592 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1593 | |
d3acc0f7 | 1594 | POPSTACK; |
a0d0e21e LW |
1595 | FREETMPS; |
1596 | LEAVE; | |
79072805 LW |
1597 | return 0; |
1598 | } | |
1599 | ||
1600 | int | |
864dbfa3 | 1601 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1602 | { |
1603 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1604 | } |
a0d0e21e | 1605 | |
a3bcc51e TP |
1606 | SV * |
1607 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1608 | { | |
1609 | dSP; | |
1610 | SV *retval = &PL_sv_undef; | |
1611 | SV *tied = SvTIED_obj((SV*)hv, mg); | |
1612 | HV *pkg = SvSTASH((SV*)SvRV(tied)); | |
1613 | ||
1614 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1615 | SV *key; | |
1616 | if (HvEITER(hv)) | |
1617 | /* we are in an iteration so the hash cannot be empty */ | |
1618 | return &PL_sv_yes; | |
1619 | /* no xhv_eiter so now use FIRSTKEY */ | |
1620 | key = sv_newmortal(); | |
1621 | magic_nextpack((SV*)hv, mg, key); | |
1622 | HvEITER(hv) = NULL; /* need to reset iterator */ | |
1623 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; | |
1624 | } | |
1625 | ||
1626 | /* there is a SCALAR method that we can call */ | |
1627 | ENTER; | |
1628 | PUSHSTACKi(PERLSI_MAGIC); | |
1629 | PUSHMARK(SP); | |
1630 | EXTEND(SP, 1); | |
1631 | PUSHs(tied); | |
1632 | PUTBACK; | |
1633 | ||
1634 | if (call_method("SCALAR", G_SCALAR)) | |
1635 | retval = *PL_stack_sp--; | |
1636 | POPSTACK; | |
1637 | LEAVE; | |
1638 | return retval; | |
1639 | } | |
1640 | ||
a0d0e21e | 1641 | int |
864dbfa3 | 1642 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1643 | { |
1644 | OP *o; | |
1645 | I32 i; | |
1646 | GV* gv; | |
1647 | SV** svp; | |
2d8e6c8d | 1648 | STRLEN n_a; |
79072805 | 1649 | |
3280af22 | 1650 | gv = PL_DBline; |
79072805 | 1651 | i = SvTRUE(sv); |
188ea221 | 1652 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1653 | atoi(MgPV(mg,n_a)), FALSE); |
5df8de69 DM |
1654 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) { |
1655 | /* set or clear breakpoint in the relevant control op */ | |
1656 | if (i) | |
1657 | o->op_flags |= OPf_SPECIAL; | |
1658 | else | |
1659 | o->op_flags &= ~OPf_SPECIAL; | |
1660 | } | |
79072805 LW |
1661 | return 0; |
1662 | } | |
1663 | ||
1664 | int | |
864dbfa3 | 1665 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1666 | { |
3280af22 | 1667 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1668 | return 0; |
1669 | } | |
1670 | ||
1671 | int | |
864dbfa3 | 1672 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1673 | { |
3280af22 | 1674 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1675 | return 0; |
1676 | } | |
1677 | ||
1678 | int | |
864dbfa3 | 1679 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1680 | { |
1681 | SV* lsv = LvTARG(sv); | |
ac27b0f5 | 1682 | |
a0d0e21e | 1683 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
14befaf4 | 1684 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
565764a8 | 1685 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 | 1686 | I32 i = mg->mg_len; |
7e2040f0 | 1687 | if (DO_UTF8(lsv)) |
a0ed51b3 LW |
1688 | sv_pos_b2u(lsv, &i); |
1689 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1690 | return 0; |
1691 | } | |
1692 | } | |
0c34ef67 | 1693 | SvOK_off(sv); |
a0d0e21e LW |
1694 | return 0; |
1695 | } | |
1696 | ||
1697 | int | |
864dbfa3 | 1698 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1699 | { |
1700 | SV* lsv = LvTARG(sv); | |
1701 | SSize_t pos; | |
1702 | STRLEN len; | |
c00206c8 | 1703 | STRLEN ulen = 0; |
a0d0e21e LW |
1704 | |
1705 | mg = 0; | |
ac27b0f5 | 1706 | |
a0d0e21e | 1707 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
14befaf4 | 1708 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e LW |
1709 | if (!mg) { |
1710 | if (!SvOK(sv)) | |
1711 | return 0; | |
14befaf4 DM |
1712 | sv_magic(lsv, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1713 | mg = mg_find(lsv, PERL_MAGIC_regex_global); | |
a0d0e21e LW |
1714 | } |
1715 | else if (!SvOK(sv)) { | |
565764a8 | 1716 | mg->mg_len = -1; |
a0d0e21e LW |
1717 | return 0; |
1718 | } | |
1719 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1720 | ||
c485e607 | 1721 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 | 1722 | |
7e2040f0 | 1723 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1724 | ulen = sv_len_utf8(lsv); |
1725 | if (ulen) | |
1726 | len = ulen; | |
a0ed51b3 LW |
1727 | } |
1728 | ||
a0d0e21e LW |
1729 | if (pos < 0) { |
1730 | pos += len; | |
1731 | if (pos < 0) | |
1732 | pos = 0; | |
1733 | } | |
eb160463 | 1734 | else if (pos > (SSize_t)len) |
a0d0e21e | 1735 | pos = len; |
a0ed51b3 LW |
1736 | |
1737 | if (ulen) { | |
1738 | I32 p = pos; | |
1739 | sv_pos_u2b(lsv, &p, 0); | |
1740 | pos = p; | |
1741 | } | |
727405f8 | 1742 | |
565764a8 | 1743 | mg->mg_len = pos; |
71be2cbc | 1744 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1745 | |
79072805 LW |
1746 | return 0; |
1747 | } | |
1748 | ||
1749 | int | |
864dbfa3 | 1750 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1751 | { |
8646b087 | 1752 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1753 | SvFAKE_off(sv); | |
946ec16e | 1754 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1755 | SvFAKE_on(sv); |
1756 | } | |
1757 | else | |
946ec16e | 1758 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1759 | return 0; |
1760 | } | |
1761 | ||
1762 | int | |
864dbfa3 | 1763 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1764 | { |
1765 | register char *s; | |
1766 | GV* gv; | |
2d8e6c8d | 1767 | STRLEN n_a; |
79072805 LW |
1768 | |
1769 | if (!SvOK(sv)) | |
1770 | return 0; | |
2d8e6c8d | 1771 | s = SvPV(sv, n_a); |
79072805 LW |
1772 | if (*s == '*' && s[1]) |
1773 | s++; | |
85e6fe83 | 1774 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1775 | if (sv == (SV*)gv) |
1776 | return 0; | |
1777 | if (GvGP(sv)) | |
88e89b8a | 1778 | gp_free((GV*)sv); |
79072805 | 1779 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1780 | return 0; |
1781 | } | |
1782 | ||
1783 | int | |
864dbfa3 | 1784 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1785 | { |
1786 | STRLEN len; | |
1787 | SV *lsv = LvTARG(sv); | |
1788 | char *tmps = SvPV(lsv,len); | |
1789 | I32 offs = LvTARGOFF(sv); | |
1790 | I32 rem = LvTARGLEN(sv); | |
1791 | ||
9aa983d2 JH |
1792 | if (SvUTF8(lsv)) |
1793 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1794 | if (offs > (I32)len) |
6ff81951 | 1795 | offs = len; |
eb160463 | 1796 | if (rem + offs > (I32)len) |
6ff81951 GS |
1797 | rem = len - offs; |
1798 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1799 | if (SvUTF8(lsv)) |
2ef4b674 | 1800 | SvUTF8_on(sv); |
6ff81951 GS |
1801 | return 0; |
1802 | } | |
1803 | ||
1804 | int | |
864dbfa3 | 1805 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1806 | { |
9aa983d2 JH |
1807 | STRLEN len; |
1808 | char *tmps = SvPV(sv, len); | |
1809 | SV *lsv = LvTARG(sv); | |
1810 | I32 lvoff = LvTARGOFF(sv); | |
1811 | I32 lvlen = LvTARGLEN(sv); | |
075a4a2b | 1812 | |
1aa99e6b | 1813 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1814 | sv_utf8_upgrade(lsv); |
1815 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1816 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1817 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1818 | SvUTF8_on(lsv); |
1819 | } | |
9bf12eaf | 1820 | else if (lsv && SvUTF8(lsv)) { |
9aa983d2 | 1821 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1822 | LvTARGLEN(sv) = len; |
e95af362 | 1823 | tmps = (char*)bytes_to_utf8((U8*)tmps, &len); |
9aa983d2 JH |
1824 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1825 | Safefree(tmps); | |
1aa99e6b | 1826 | } |
b76f3ce2 GB |
1827 | else { |
1828 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1829 | LvTARGLEN(sv) = len; | |
1830 | } | |
1831 | ||
1aa99e6b | 1832 | |
79072805 LW |
1833 | return 0; |
1834 | } | |
1835 | ||
1836 | int | |
864dbfa3 | 1837 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1838 | { |
565764a8 | 1839 | TAINT_IF((mg->mg_len & 1) || |
155aba94 | 1840 | ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */ |
463ee0b2 LW |
1841 | return 0; |
1842 | } | |
1843 | ||
1844 | int | |
864dbfa3 | 1845 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1846 | { |
3280af22 NIS |
1847 | if (PL_localizing) { |
1848 | if (PL_localizing == 1) | |
565764a8 | 1849 | mg->mg_len <<= 1; |
748a9306 | 1850 | else |
565764a8 | 1851 | mg->mg_len >>= 1; |
a0d0e21e | 1852 | } |
3280af22 | 1853 | else if (PL_tainted) |
565764a8 | 1854 | mg->mg_len |= 1; |
748a9306 | 1855 | else |
565764a8 | 1856 | mg->mg_len &= ~1; |
463ee0b2 LW |
1857 | return 0; |
1858 | } | |
1859 | ||
1860 | int | |
864dbfa3 | 1861 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1862 | { |
1863 | SV *lsv = LvTARG(sv); | |
6ff81951 GS |
1864 | |
1865 | if (!lsv) { | |
0c34ef67 | 1866 | SvOK_off(sv); |
6ff81951 GS |
1867 | return 0; |
1868 | } | |
6ff81951 | 1869 | |
81e118e0 | 1870 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1871 | return 0; |
1872 | } | |
1873 | ||
1874 | int | |
864dbfa3 | 1875 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1876 | { |
1877 | do_vecset(sv); /* XXX slurp this routine */ | |
1878 | return 0; | |
1879 | } | |
1880 | ||
1881 | int | |
864dbfa3 | 1882 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1883 | { |
71be2cbc | 1884 | SV *targ = Nullsv; |
5f05dabc | 1885 | if (LvTARGLEN(sv)) { |
68dc0745 | 1886 | if (mg->mg_obj) { |
74e13ce4 | 1887 | SV *ahv = LvTARG(sv); |
6d822dc4 MS |
1888 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1889 | if (he) | |
1890 | targ = HeVAL(he); | |
68dc0745 | 1891 | } |
1892 | else { | |
3c78fafa | 1893 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1894 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1895 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1896 | } | |
3280af22 | 1897 | if (targ && targ != &PL_sv_undef) { |
68dc0745 | 1898 | /* somebody else defined it for us */ |
1899 | SvREFCNT_dec(LvTARG(sv)); | |
1900 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1901 | LvTARGLEN(sv) = 0; | |
1902 | SvREFCNT_dec(mg->mg_obj); | |
1903 | mg->mg_obj = Nullsv; | |
1904 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1905 | } | |
5f05dabc | 1906 | } |
71be2cbc | 1907 | else |
1908 | targ = LvTARG(sv); | |
3280af22 | 1909 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1910 | return 0; |
1911 | } | |
1912 | ||
1913 | int | |
864dbfa3 | 1914 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1915 | { |
1916 | if (LvTARGLEN(sv)) | |
68dc0745 | 1917 | vivify_defelem(sv); |
1918 | if (LvTARG(sv)) { | |
5f05dabc | 1919 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1920 | SvSETMAGIC(LvTARG(sv)); |
1921 | } | |
5f05dabc | 1922 | return 0; |
1923 | } | |
1924 | ||
71be2cbc | 1925 | void |
864dbfa3 | 1926 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1927 | { |
74e13ce4 GS |
1928 | MAGIC *mg; |
1929 | SV *value = Nullsv; | |
71be2cbc | 1930 | |
14befaf4 | 1931 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 1932 | return; |
68dc0745 | 1933 | if (mg->mg_obj) { |
74e13ce4 | 1934 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1935 | STRLEN n_a; |
6d822dc4 MS |
1936 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
1937 | if (he) | |
1938 | value = HeVAL(he); | |
3280af22 | 1939 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1940 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1941 | } |
68dc0745 | 1942 | else { |
1943 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1944 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1945 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1946 | else { | |
1947 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1948 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1949 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1950 | } |
1951 | } | |
3e3baf6d | 1952 | (void)SvREFCNT_inc(value); |
68dc0745 | 1953 | SvREFCNT_dec(LvTARG(sv)); |
1954 | LvTARG(sv) = value; | |
71be2cbc | 1955 | LvTARGLEN(sv) = 0; |
68dc0745 | 1956 | SvREFCNT_dec(mg->mg_obj); |
1957 | mg->mg_obj = Nullsv; | |
1958 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1959 | } |
1960 | ||
1961 | int | |
864dbfa3 | 1962 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1963 | { |
1964 | AV *av = (AV*)mg->mg_obj; | |
1965 | SV **svp = AvARRAY(av); | |
1966 | I32 i = AvFILLp(av); | |
1967 | while (i >= 0) { | |
fdc9a813 | 1968 | if (svp[i]) { |
810b8aa5 | 1969 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 | 1970 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 GS |
1971 | /* XXX Should we check that it hasn't changed? */ |
1972 | SvRV(svp[i]) = 0; | |
0c34ef67 | 1973 | SvOK_off(svp[i]); |
810b8aa5 | 1974 | SvWEAKREF_off(svp[i]); |
fdc9a813 | 1975 | svp[i] = Nullsv; |
810b8aa5 GS |
1976 | } |
1977 | i--; | |
1978 | } | |
d99b02a1 | 1979 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ |
810b8aa5 GS |
1980 | return 0; |
1981 | } | |
1982 | ||
1983 | int | |
864dbfa3 | 1984 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1985 | { |
565764a8 | 1986 | mg->mg_len = -1; |
c6496cc7 | 1987 | SvSCREAM_off(sv); |
93a17b20 LW |
1988 | return 0; |
1989 | } | |
1990 | ||
1991 | int | |
864dbfa3 | 1992 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1993 | { |
14befaf4 | 1994 | sv_unmagic(sv, PERL_MAGIC_bm); |
79072805 LW |
1995 | SvVALID_off(sv); |
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | int | |
864dbfa3 | 2000 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 2001 | { |
14befaf4 | 2002 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 2003 | SvCOMPILED_off(sv); |
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | int | |
864dbfa3 | 2008 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
2009 | { |
2010 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
2011 | ||
2012 | if (uf && uf->uf_set) | |
24f81a43 | 2013 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2014 | return 0; |
2015 | } | |
2016 | ||
c277df42 | 2017 | int |
faf82a0b AE |
2018 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2019 | { | |
2020 | sv_unmagic(sv, PERL_MAGIC_qr); | |
2021 | return 0; | |
2022 | } | |
2023 | ||
2024 | int | |
864dbfa3 | 2025 | Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg) |
c277df42 IZ |
2026 | { |
2027 | regexp *re = (regexp *)mg->mg_obj; | |
2028 | ReREFCNT_dec(re); | |
2029 | return 0; | |
2030 | } | |
2031 | ||
7a4c00b4 | 2032 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2033 | int |
864dbfa3 | 2034 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2035 | { |
2036 | /* | |
838b5b74 | 2037 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2038 | * and vanished with a faint plop. |
2039 | */ | |
7a4c00b4 | 2040 | if (mg->mg_ptr) { |
2041 | Safefree(mg->mg_ptr); | |
2042 | mg->mg_ptr = NULL; | |
565764a8 | 2043 | mg->mg_len = -1; |
7a4c00b4 | 2044 | } |
bbce6d69 | 2045 | return 0; |
2046 | } | |
7a4c00b4 | 2047 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2048 | |
7e8c5dac HS |
2049 | /* Just clear the UTF-8 cache data. */ |
2050 | int | |
2051 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2052 | { | |
2053 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ | |
2054 | mg->mg_ptr = 0; | |
2055 | mg->mg_len = -1; /* The mg_len holds the len cache. */ | |
2056 | return 0; | |
2057 | } | |
2058 | ||
bbce6d69 | 2059 | int |
864dbfa3 | 2060 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
2061 | { |
2062 | register char *s; | |
2063 | I32 i; | |
8990e307 | 2064 | STRLEN len; |
79072805 | 2065 | switch (*mg->mg_ptr) { |
748a9306 | 2066 | case '\001': /* ^A */ |
3280af22 | 2067 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2068 | break; |
49460fe6 | 2069 | case '\003': /* ^C */ |
eb160463 | 2070 | PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
49460fe6 NIS |
2071 | break; |
2072 | ||
79072805 | 2073 | case '\004': /* ^D */ |
b4ab917c DM |
2074 | #ifdef DEBUGGING |
2075 | s = SvPV_nolen(sv); | |
ddcf8bc1 | 2076 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2077 | DEBUG_x(dump_all()); |
b4ab917c DM |
2078 | #else |
2079 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG; | |
2080 | #endif | |
79072805 | 2081 | break; |
28f23441 | 2082 | case '\005': /* ^E */ |
d0063567 | 2083 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2084 | #ifdef MACOS_TRADITIONAL |
d0063567 | 2085 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 | 2086 | #else |
cd39f2b6 | 2087 | # ifdef VMS |
d0063567 | 2088 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf | 2089 | # else |
cd39f2b6 | 2090 | # ifdef WIN32 |
d0063567 | 2091 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2092 | # else |
9fed8b87 | 2093 | # ifdef OS2 |
d0063567 | 2094 | os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
9fed8b87 | 2095 | # else |
d0063567 DK |
2096 | /* will anyone ever use this? */ |
2097 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 2098 | # endif |
048c1ddf IZ |
2099 | # endif |
2100 | # endif | |
22fae026 | 2101 | #endif |
d0063567 DK |
2102 | } |
2103 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2104 | if (PL_encoding) | |
2105 | SvREFCNT_dec(PL_encoding); | |
2106 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2107 | PL_encoding = newSVsv(sv); | |
2108 | } | |
2109 | else { | |
2110 | PL_encoding = Nullsv; | |
2111 | } | |
2112 | } | |
2113 | break; | |
79072805 | 2114 | case '\006': /* ^F */ |
3280af22 | 2115 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 2116 | break; |
a0d0e21e | 2117 | case '\010': /* ^H */ |
3280af22 | 2118 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 2119 | break; |
9d116dd7 | 2120 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
2121 | if (PL_inplace) |
2122 | Safefree(PL_inplace); | |
79072805 | 2123 | if (SvOK(sv)) |
2d8e6c8d | 2124 | PL_inplace = savepv(SvPV(sv,len)); |
79072805 | 2125 | else |
3280af22 | 2126 | PL_inplace = Nullch; |
79072805 | 2127 | break; |
28f23441 | 2128 | case '\017': /* ^O */ |
ac27b0f5 | 2129 | if (*(mg->mg_ptr+1) == '\0') { |
1bf29663 | 2130 | if (PL_osname) { |
ac27b0f5 | 2131 | Safefree(PL_osname); |
1bf29663 DM |
2132 | PL_osname = Nullch; |
2133 | } | |
3511154c DM |
2134 | if (SvOK(sv)) { |
2135 | TAINT_PROPER("assigning to $^O"); | |
ac27b0f5 | 2136 | PL_osname = savepv(SvPV(sv,len)); |
3511154c | 2137 | } |
ac27b0f5 NIS |
2138 | } |
2139 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
2140 | if (!PL_compiling.cop_io) | |
2141 | PL_compiling.cop_io = newSVsv(sv); | |
2142 | else | |
2143 | sv_setsv(PL_compiling.cop_io,sv); | |
2144 | } | |
28f23441 | 2145 | break; |
79072805 | 2146 | case '\020': /* ^P */ |
3280af22 | 2147 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
39bd0f18 PJ |
2148 | if ((PERLDB_SUB || PERLDB_LINE || PERLDB_SUBLINE || PERLDB_ASSERTION) |
2149 | && !PL_DBsingle) | |
1ee4443e | 2150 | init_debugger(); |
79072805 LW |
2151 | break; |
2152 | case '\024': /* ^T */ | |
88e89b8a | 2153 | #ifdef BIG_TIME |
6b88bc9c | 2154 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2155 | #else |
3280af22 | 2156 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 2157 | #endif |
79072805 | 2158 | break; |
fde18df1 | 2159 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2160 | if (*(mg->mg_ptr+1) == '\0') { |
2161 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
2162 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
ac27b0f5 | 2163 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2164 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2165 | } |
599cee73 | 2166 | } |
0a378802 | 2167 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2168 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2169 | if (!SvPOK(sv) && PL_localizing) { |
2170 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2171 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2172 | break; |
2173 | } | |
f4fc7782 | 2174 | { |
b5477537 | 2175 | STRLEN len, i; |
d3a7d8c7 | 2176 | int accumulate = 0 ; |
f4fc7782 | 2177 | int any_fatals = 0 ; |
d3a7d8c7 | 2178 | char * ptr = (char*)SvPV(sv, len) ; |
f4fc7782 JH |
2179 | for (i = 0 ; i < len ; ++i) { |
2180 | accumulate |= ptr[i] ; | |
2181 | any_fatals |= (ptr[i] & 0xAA) ; | |
2182 | } | |
d3a7d8c7 GS |
2183 | if (!accumulate) |
2184 | PL_compiling.cop_warnings = pWARN_NONE; | |
f4fc7782 JH |
2185 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
2186 | PL_compiling.cop_warnings = pWARN_ALL; | |
2187 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2188 | } |
d3a7d8c7 GS |
2189 | else { |
2190 | if (specialWARN(PL_compiling.cop_warnings)) | |
2191 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
2192 | else | |
2193 | sv_setsv(PL_compiling.cop_warnings, sv); | |
2194 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
2195 | PL_dowarn |= G_WARN_ONCE ; | |
2196 | } | |
f4fc7782 | 2197 | |
d3a7d8c7 | 2198 | } |
4438c4b7 | 2199 | } |
971a9dd3 | 2200 | } |
79072805 LW |
2201 | break; |
2202 | case '.': | |
3280af22 NIS |
2203 | if (PL_localizing) { |
2204 | if (PL_localizing == 1) | |
7766f137 | 2205 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2206 | } |
3280af22 | 2207 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2208 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2209 | break; |
2210 | case '^': | |
3280af22 | 2211 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 2212 | IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 2213 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
2214 | break; |
2215 | case '~': | |
3280af22 | 2216 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
2d8e6c8d | 2217 | IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len)); |
3280af22 | 2218 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 LW |
2219 | break; |
2220 | case '=': | |
632db599 | 2221 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2222 | break; |
2223 | case '-': | |
632db599 | 2224 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
3280af22 NIS |
2225 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2226 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2227 | break; |
2228 | case '%': | |
632db599 | 2229 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2230 | break; |
2231 | case '|': | |
4b65379b | 2232 | { |
3280af22 | 2233 | IO *io = GvIOp(PL_defoutgv); |
720f287d AB |
2234 | if(!io) |
2235 | break; | |
4b65379b CS |
2236 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
2237 | IoFLAGS(io) &= ~IOf_FLUSH; | |
2238 | else { | |
2239 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2240 | PerlIO *ofp = IoOFP(io); | |
2241 | if (ofp) | |
2242 | (void)PerlIO_flush(ofp); | |
2243 | IoFLAGS(io) |= IOf_FLUSH; | |
2244 | } | |
2245 | } | |
79072805 LW |
2246 | } |
2247 | break; | |
79072805 | 2248 | case '/': |
3280af22 | 2249 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2250 | PL_rs = newSVsv(sv); |
79072805 LW |
2251 | break; |
2252 | case '\\': | |
7889fe52 NIS |
2253 | if (PL_ors_sv) |
2254 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2255 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2256 | PL_ors_sv = newSVsv(sv); |
009c130f | 2257 | } |
e3c19b7b | 2258 | else { |
7889fe52 | 2259 | PL_ors_sv = Nullsv; |
e3c19b7b | 2260 | } |
79072805 LW |
2261 | break; |
2262 | case ',': | |
7889fe52 NIS |
2263 | if (PL_ofs_sv) |
2264 | SvREFCNT_dec(PL_ofs_sv); | |
2265 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2266 | PL_ofs_sv = newSVsv(sv); | |
2267 | } | |
2268 | else { | |
2269 | PL_ofs_sv = Nullsv; | |
2270 | } | |
79072805 LW |
2271 | break; |
2272 | case '#': | |
3280af22 NIS |
2273 | if (PL_ofmt) |
2274 | Safefree(PL_ofmt); | |
2d8e6c8d | 2275 | PL_ofmt = savepv(SvPV(sv,len)); |
79072805 LW |
2276 | break; |
2277 | case '[': | |
3280af22 | 2278 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
2279 | break; |
2280 | case '?': | |
ff0cee69 | 2281 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2282 | if (PL_localizing == 2) { |
2283 | PL_statusvalue = LvTARGOFF(sv); | |
2284 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2285 | } |
2286 | else | |
2287 | #endif | |
2288 | #ifdef VMSISH_STATUS | |
2289 | if (VMSISH_STATUS) | |
2290 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
2291 | else | |
2292 | #endif | |
2293 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
2294 | break; |
2295 | case '!': | |
93189314 JH |
2296 | { |
2297 | #ifdef VMS | |
2298 | # define PERL_VMS_BANG vaxc$errno | |
2299 | #else | |
2300 | # define PERL_VMS_BANG 0 | |
2301 | #endif | |
91487cfc | 2302 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2303 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2304 | } | |
79072805 LW |
2305 | break; |
2306 | case '<': | |
3280af22 NIS |
2307 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2308 | if (PL_delaymagic) { | |
2309 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2310 | break; /* don't do magic till later */ |
2311 | } | |
2312 | #ifdef HAS_SETRUID | |
b28d0864 | 2313 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2314 | #else |
2315 | #ifdef HAS_SETREUID | |
3280af22 | 2316 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2317 | #else |
85e6fe83 | 2318 | #ifdef HAS_SETRESUID |
b28d0864 | 2319 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2320 | #else |
75870ed3 | 2321 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2322 | #ifdef PERL_DARWIN | |
2323 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2324 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2325 | (void)PerlProc_setuid(0); | |
2326 | #endif | |
b28d0864 | 2327 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2328 | } else { |
d8eceb89 | 2329 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2330 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2331 | } |
79072805 LW |
2332 | #endif |
2333 | #endif | |
85e6fe83 | 2334 | #endif |
d8eceb89 | 2335 | PL_uid = PerlProc_getuid(); |
3280af22 | 2336 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2337 | break; |
2338 | case '>': | |
3280af22 NIS |
2339 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2340 | if (PL_delaymagic) { | |
2341 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2342 | break; /* don't do magic till later */ |
2343 | } | |
2344 | #ifdef HAS_SETEUID | |
3280af22 | 2345 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2346 | #else |
2347 | #ifdef HAS_SETREUID | |
b28d0864 | 2348 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2349 | #else |
2350 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2351 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2352 | #else |
b28d0864 NIS |
2353 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2354 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2355 | else { |
e8ee3774 | 2356 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2357 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2358 | } |
79072805 LW |
2359 | #endif |
2360 | #endif | |
85e6fe83 | 2361 | #endif |
d8eceb89 | 2362 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2363 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2364 | break; |
2365 | case '(': | |
3280af22 NIS |
2366 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2367 | if (PL_delaymagic) { | |
2368 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2369 | break; /* don't do magic till later */ |
2370 | } | |
2371 | #ifdef HAS_SETRGID | |
b28d0864 | 2372 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2373 | #else |
2374 | #ifdef HAS_SETREGID | |
3280af22 | 2375 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2376 | #else |
2377 | #ifdef HAS_SETRESGID | |
b28d0864 | 2378 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2379 | #else |
b28d0864 NIS |
2380 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2381 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2382 | else { |
d8eceb89 | 2383 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2384 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2385 | } |
79072805 LW |
2386 | #endif |
2387 | #endif | |
85e6fe83 | 2388 | #endif |
d8eceb89 | 2389 | PL_gid = PerlProc_getgid(); |
3280af22 | 2390 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2391 | break; |
2392 | case ')': | |
5cd24f17 | 2393 | #ifdef HAS_SETGROUPS |
2394 | { | |
2d8e6c8d | 2395 | char *p = SvPV(sv, len); |
5cd24f17 | 2396 | Groups_t gary[NGROUPS]; |
2397 | ||
5cd24f17 | 2398 | while (isSPACE(*p)) |
2399 | ++p; | |
2d4389e4 | 2400 | PL_egid = Atol(p); |
5cd24f17 | 2401 | for (i = 0; i < NGROUPS; ++i) { |
2402 | while (*p && !isSPACE(*p)) | |
2403 | ++p; | |
2404 | while (isSPACE(*p)) | |
2405 | ++p; | |
2406 | if (!*p) | |
2407 | break; | |
2d4389e4 | 2408 | gary[i] = Atol(p); |
5cd24f17 | 2409 | } |
8cc95fdb | 2410 | if (i) |
2411 | (void)setgroups(i, gary); | |
5cd24f17 | 2412 | } |
2413 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 2414 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 2415 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2416 | if (PL_delaymagic) { |
2417 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2418 | break; /* don't do magic till later */ |
2419 | } | |
2420 | #ifdef HAS_SETEGID | |
3280af22 | 2421 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2422 | #else |
2423 | #ifdef HAS_SETREGID | |
b28d0864 | 2424 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2425 | #else |
2426 | #ifdef HAS_SETRESGID | |
b28d0864 | 2427 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2428 | #else |
b28d0864 NIS |
2429 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2430 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2431 | else { |
d8eceb89 | 2432 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2433 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2434 | } |
79072805 LW |
2435 | #endif |
2436 | #endif | |
85e6fe83 | 2437 | #endif |
d8eceb89 | 2438 | PL_egid = PerlProc_getegid(); |
3280af22 | 2439 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2440 | break; |
2441 | case ':': | |
2d8e6c8d | 2442 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2443 | break; |
cd39f2b6 | 2444 | #ifndef MACOS_TRADITIONAL |
79072805 | 2445 | case '0': |
e2975953 | 2446 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2447 | #ifdef HAS_SETPROCTITLE |
2448 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2449 | * show a string from the process struct and provide | |
2450 | * the setproctitle() routine to manipulate that. */ | |
2451 | { | |
2452 | s = SvPV(sv, len); | |
98b76f99 | 2453 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2454 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2455 | * but not the "(perl) suffix from the ps(1) |
2456 | * output, because that's what ps(1) shows if the | |
2457 | * argv[] is modified. */ | |
6f2ad931 | 2458 | setproctitle("-%s", s); |
9aad2c0e | 2459 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2460 | /* This doesn't really work if you assume that |
2461 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2462 | * because in ps(1) output the result will be like | |
2463 | * sprintf("perl: %s (perl)", s) | |
2464 | * I guess this is a security feature: | |
2465 | * one (a user process) cannot get rid of the original name. | |
2466 | * --jhi */ | |
2467 | setproctitle("%s", s); | |
2468 | # endif | |
2469 | } | |
2470 | #endif | |
17aa7f3d JH |
2471 | #if defined(__hpux) && defined(PSTAT_SETCMD) |
2472 | { | |
2473 | union pstun un; | |
2474 | s = SvPV(sv, len); | |
2475 | un.pst_command = s; | |
2476 | pstat(PSTAT_SETCMD, un, len, 0, 0); | |
2477 | } | |
2478 | #endif | |
3cb9023d | 2479 | /* PL_origalen is set in perl_parse(). */ |
a0d0e21e | 2480 | s = SvPV_force(sv,len); |
6f698202 AMS |
2481 | if (len >= (STRLEN)PL_origalen-1) { |
2482 | /* Longer than original, will be truncated. We assume that | |
2483 | * PL_origalen bytes are available. */ | |
2484 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
79072805 LW |
2485 | } |
2486 | else { | |
54bfe034 JH |
2487 | /* Shorter than original, will be padded. */ |
2488 | Copy(s, PL_origargv[0], len, char); | |
2489 | PL_origargv[0][len] = 0; | |
2490 | memset(PL_origargv[0] + len + 1, | |
2491 | /* Is the space counterintuitive? Yes. | |
2492 | * (You were expecting \0?) | |
3cb9023d | 2493 | * Does it work? Seems to. (In Linux 2.4.20 at least.) |
54bfe034 JH |
2494 | * --jhi */ |
2495 | (int)' ', | |
2496 | PL_origalen - len - 1); | |
79072805 | 2497 | } |
ad7eccf4 JD |
2498 | PL_origargv[0][PL_origalen-1] = 0; |
2499 | for (i = 1; i < PL_origargc; i++) | |
2500 | PL_origargv[i] = 0; | |
e2975953 | 2501 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2502 | break; |
cd39f2b6 | 2503 | #endif |
79072805 LW |
2504 | } |
2505 | return 0; | |
2506 | } | |
2507 | ||
2508 | I32 | |
864dbfa3 | 2509 | Perl_whichsig(pTHX_ char *sig) |
79072805 LW |
2510 | { |
2511 | register char **sigv; | |
2512 | ||
e02bfb16 | 2513 | for (sigv = PL_sig_name; *sigv; sigv++) |
79072805 | 2514 | if (strEQ(sig,*sigv)) |
22c35a8c | 2515 | return PL_sig_num[sigv - PL_sig_name]; |
79072805 LW |
2516 | #ifdef SIGCLD |
2517 | if (strEQ(sig,"CHLD")) | |
2518 | return SIGCLD; | |
2519 | #endif | |
2520 | #ifdef SIGCHLD | |
2521 | if (strEQ(sig,"CLD")) | |
2522 | return SIGCHLD; | |
2523 | #endif | |
7f1236c0 | 2524 | return -1; |
79072805 LW |
2525 | } |
2526 | ||
df3728a2 | 2527 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2528 | static SV* sig_sv; |
df3728a2 | 2529 | #endif |
84902520 | 2530 | |
ecfc5424 | 2531 | Signal_t |
cea2e8a9 | 2532 | Perl_sighandler(int sig) |
79072805 | 2533 | { |
1018e26f NIS |
2534 | #ifdef PERL_GET_SIG_CONTEXT |
2535 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2536 | #else |
cea2e8a9 | 2537 | dTHX; |
71d280e3 | 2538 | #endif |
79072805 | 2539 | dSP; |
00d579c5 | 2540 | GV *gv = Nullgv; |
a0d0e21e | 2541 | HV *st; |
b7953727 | 2542 | SV *sv = Nullsv, *tSv = PL_Sv; |
00d579c5 | 2543 | CV *cv = Nullcv; |
533c011a | 2544 | OP *myop = PL_op; |
84902520 | 2545 | U32 flags = 0; |
3280af22 | 2546 | XPV *tXpv = PL_Xpv; |
71d280e3 | 2547 | |
3280af22 | 2548 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2549 | flags |= 1; |
3280af22 | 2550 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2551 | flags |= 4; |
3280af22 | 2552 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2553 | flags |= 16; |
2554 | ||
727405f8 | 2555 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2556 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2557 | PL_sig_name[sig]); |
2558 | exit(sig); | |
2559 | } | |
ff0cee69 | 2560 | |
84902520 TB |
2561 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2562 | infinity, so we fix 4 (in fact 5): */ | |
2563 | if (flags & 1) { | |
3280af22 | 2564 | PL_savestack_ix += 5; /* Protect save in progress. */ |
c76ac1ee | 2565 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 | 2566 | } |
ac27b0f5 | 2567 | if (flags & 4) |
3280af22 | 2568 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2569 | if (flags & 16) |
3280af22 | 2570 | PL_scopestack_ix += 1; |
84902520 | 2571 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2572 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2573 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2574 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2575 | |
a0d0e21e | 2576 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2577 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2578 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2579 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2580 | : ((cv && CvGV(cv)) |
2581 | ? GvENAME(CvGV(cv)) | |
2582 | : "__ANON__"))); | |
2583 | goto cleanup; | |
79072805 LW |
2584 | } |
2585 | ||
22c35a8c GS |
2586 | if(PL_psig_name[sig]) { |
2587 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 | 2588 | flags |= 64; |
df3728a2 | 2589 | #if !defined(PERL_IMPLICIT_CONTEXT) |
84902520 | 2590 | sig_sv = sv; |
df3728a2 | 2591 | #endif |
84902520 | 2592 | } else { |
ff0cee69 | 2593 | sv = sv_newmortal(); |
22c35a8c | 2594 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2595 | } |
e336de0d | 2596 | |
e788e7d3 | 2597 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2598 | PUSHMARK(SP); |
79072805 | 2599 | PUSHs(sv); |
79072805 | 2600 | PUTBACK; |
a0d0e21e | 2601 | |
1b266415 | 2602 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2603 | |
d3acc0f7 | 2604 | POPSTACK; |
1b266415 | 2605 | if (SvTRUE(ERRSV)) { |
1d615522 | 2606 | #ifndef PERL_MICRO |
983dbef6 | 2607 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2608 | /* Handler "died", for example to get out of a restart-able read(). |
2609 | * Before we re-do that on its behalf re-enable the signal which was | |
2610 | * blocked by the system when we entered. | |
2611 | */ | |
2612 | sigset_t set; | |
2613 | sigemptyset(&set); | |
2614 | sigaddset(&set,sig); | |
2615 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2616 | #else | |
2617 | /* Not clear if this will work */ | |
2618 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2619 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2620 | #endif |
1d615522 | 2621 | #endif /* !PERL_MICRO */ |
b3fe4827 | 2622 | Perl_die(aTHX_ Nullformat); |
1b266415 | 2623 | } |
00d579c5 | 2624 | cleanup: |
84902520 | 2625 | if (flags & 1) |
3280af22 | 2626 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2627 | if (flags & 4) |
3280af22 | 2628 | PL_markstack_ptr--; |
84902520 | 2629 | if (flags & 16) |
3280af22 | 2630 | PL_scopestack_ix -= 1; |
84902520 TB |
2631 | if (flags & 64) |
2632 | SvREFCNT_dec(sv); | |
533c011a | 2633 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2634 | |
3280af22 NIS |
2635 | PL_Sv = tSv; /* Restore global temporaries. */ |
2636 | PL_Xpv = tXpv; | |
53bb94e2 | 2637 | return; |
79072805 | 2638 | } |
4e35701f NIS |
2639 | |
2640 | ||
51371543 | 2641 | static void |
acfe0abc | 2642 | restore_magic(pTHX_ void *p) |
51371543 | 2643 | { |
48944bdf | 2644 | MGS* mgs = SSPTR(PTR2IV(p), MGS*); |
51371543 GS |
2645 | SV* sv = mgs->mgs_sv; |
2646 | ||
2647 | if (!sv) | |
2648 | return; | |
2649 | ||
2650 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2651 | { | |
f9701176 NC |
2652 | #ifdef PERL_COPY_ON_WRITE |
2653 | /* While magic was saved (and off) sv_setsv may well have seen | |
2654 | this SV as a prime candidate for COW. */ | |
2655 | if (SvIsCOW(sv)) | |
2656 | sv_force_normal(sv); | |
2657 | #endif | |
2658 | ||
51371543 GS |
2659 | if (mgs->mgs_flags) |
2660 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2661 | else | |
2662 | mg_magical(sv); | |
2663 | if (SvGMAGICAL(sv)) | |
2664 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2665 | } | |
2666 | ||
2667 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2668 | ||
2669 | /* If we're still on top of the stack, pop us off. (That condition | |
2670 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2671 | * if it's being called via leave_scope.) | |
2672 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2673 | * may leave alloc gunk on the savestack, and some code | |
2674 | * (e.g. sighandler) doesn't expect that... | |
2675 | */ | |
2676 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2677 | { | |
2678 | I32 popval = SSPOPINT; | |
c76ac1ee | 2679 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2680 | PL_savestack_ix -= 2; |
2681 | popval = SSPOPINT; | |
2682 | assert(popval == SAVEt_ALLOC); | |
2683 | popval = SSPOPINT; | |
2684 | PL_savestack_ix -= popval; | |
2685 | } | |
2686 | ||
2687 | } | |
2688 | ||
2689 | static void | |
acfe0abc | 2690 | unwind_handler_stack(pTHX_ void *p) |
51371543 | 2691 | { |
51371543 GS |
2692 | U32 flags = *(U32*)p; |
2693 | ||
2694 | if (flags & 1) | |
2695 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2696 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
df3728a2 | 2697 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 GS |
2698 | if (flags & 64) |
2699 | SvREFCNT_dec(sig_sv); | |
df3728a2 | 2700 | #endif |
51371543 | 2701 | } |
1018e26f NIS |
2702 | |
2703 |