Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cbdf9ef8 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never | |
13 | * come here, and I don't want to see no more magic,' he said, and fell silent." | |
79072805 LW |
14 | */ |
15 | ||
ccfc67b7 JH |
16 | /* |
17 | =head1 Magical Functions | |
166f8a29 DM |
18 | |
19 | "Magic" is special data attached to SV structures in order to give them | |
20 | "magical" properties. When any Perl code tries to read from, or assign to, | |
21 | an SV marked as magical, it calls the 'get' or 'set' function associated | |
22 | with that SV's magic. A get is called prior to reading an SV, in order to | |
ddfa107c | 23 | give it a chance to update its internal value (get on $. writes the line |
166f8a29 DM |
24 | number of the last read filehandle into to the SV's IV slot), while |
25 | set is called after an SV has been written to, in order to allow it to make | |
ddfa107c | 26 | use of its changed value (set on $/ copies the SV's new value to the |
166f8a29 DM |
27 | PL_rs global variable). |
28 | ||
29 | Magic is implemented as a linked list of MAGIC structures attached to the | |
30 | SV. Each MAGIC struct holds the type of the magic, a pointer to an array | |
31 | of functions that implement the get(), set(), length() etc functions, | |
32 | plus space for some flags and pointers. For example, a tied variable has | |
33 | a MAGIC structure that contains a pointer to the object associated with the | |
34 | tie. | |
35 | ||
ccfc67b7 JH |
36 | */ |
37 | ||
79072805 | 38 | #include "EXTERN.h" |
864dbfa3 | 39 | #define PERL_IN_MG_C |
79072805 LW |
40 | #include "perl.h" |
41 | ||
5cd24f17 | 42 | #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) |
188ea221 CS |
43 | # ifndef NGROUPS |
44 | # define NGROUPS 32 | |
45 | # endif | |
b7953727 JH |
46 | # ifdef I_GRP |
47 | # include <grp.h> | |
48 | # endif | |
188ea221 CS |
49 | #endif |
50 | ||
17aa7f3d JH |
51 | #ifdef __hpux |
52 | # include <sys/pstat.h> | |
53 | #endif | |
54 | ||
e69880a5 CB |
55 | Signal_t Perl_csighandler(int sig); |
56 | ||
35a4481c AL |
57 | static void restore_magic(pTHX_ const void *p); |
58 | static void unwind_handler_stack(pTHX_ const void *p); | |
51371543 | 59 | |
9cffb111 OS |
60 | #ifdef __Lynx__ |
61 | /* Missing protos on LynxOS */ | |
62 | void setruid(uid_t id); | |
63 | void seteuid(uid_t id); | |
64 | void setrgid(uid_t id); | |
65 | void setegid(uid_t id); | |
66 | #endif | |
67 | ||
c07a80fd | 68 | /* |
69 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. | |
70 | */ | |
71 | ||
72 | struct magic_state { | |
73 | SV* mgs_sv; | |
74 | U32 mgs_flags; | |
455ece5e | 75 | I32 mgs_ss_ix; |
c07a80fd | 76 | }; |
455ece5e | 77 | /* MGS is typedef'ed to struct magic_state in perl.h */ |
76e3520e GS |
78 | |
79 | STATIC void | |
8fb26106 | 80 | S_save_magic(pTHX_ I32 mgs_ix, SV *sv) |
c07a80fd | 81 | { |
455ece5e | 82 | MGS* mgs; |
c07a80fd | 83 | assert(SvMAGICAL(sv)); |
765f542d NC |
84 | #ifdef PERL_COPY_ON_WRITE |
85 | /* Turning READONLY off for a copy-on-write scalar is a bad idea. */ | |
86 | if (SvIsCOW(sv)) | |
87 | sv_force_normal(sv); | |
88 | #endif | |
c07a80fd | 89 | |
685f876f | 90 | SAVEDESTRUCTOR_X(restore_magic, INT2PTR(void*, (IV)mgs_ix)); |
455ece5e AD |
91 | |
92 | mgs = SSPTR(mgs_ix, MGS*); | |
c07a80fd | 93 | mgs->mgs_sv = sv; |
94 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); | |
455ece5e | 95 | mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */ |
c07a80fd | 96 | |
97 | SvMAGICAL_off(sv); | |
98 | SvREADONLY_off(sv); | |
06759ea0 | 99 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
c07a80fd | 100 | } |
101 | ||
954c1994 GS |
102 | /* |
103 | =for apidoc mg_magical | |
104 | ||
105 | Turns on the magical status of an SV. See C<sv_magic>. | |
106 | ||
107 | =cut | |
108 | */ | |
109 | ||
8990e307 | 110 | void |
864dbfa3 | 111 | Perl_mg_magical(pTHX_ SV *sv) |
8990e307 | 112 | { |
e1ec3a88 | 113 | const MAGIC* mg; |
8990e307 | 114 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 115 | const MGVTBL* const vtbl = mg->mg_virtual; |
8990e307 | 116 | if (vtbl) { |
2b260de0 | 117 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
118 | SvGMAGICAL_on(sv); |
119 | if (vtbl->svt_set) | |
120 | SvSMAGICAL_on(sv); | |
2b260de0 | 121 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
8990e307 LW |
122 | SvRMAGICAL_on(sv); |
123 | } | |
124 | } | |
125 | } | |
126 | ||
954c1994 GS |
127 | /* |
128 | =for apidoc mg_get | |
129 | ||
130 | Do magic after a value is retrieved from the SV. See C<sv_magic>. | |
131 | ||
132 | =cut | |
133 | */ | |
134 | ||
79072805 | 135 | int |
864dbfa3 | 136 | Perl_mg_get(pTHX_ SV *sv) |
79072805 | 137 | { |
35a4481c | 138 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
fe2774ed | 139 | const bool was_temp = (bool)SvTEMP(sv); |
0723351e | 140 | int have_new = 0; |
ff76feab | 141 | MAGIC *newmg, *head, *cur, *mg; |
20135930 | 142 | /* guard against sv having being freed midway by holding a private |
6683b158 NC |
143 | reference. */ |
144 | ||
145 | /* sv_2mortal has this side effect of turning on the TEMP flag, which can | |
146 | cause the SV's buffer to get stolen (and maybe other stuff). | |
147 | So restore it. | |
148 | */ | |
149 | sv_2mortal(SvREFCNT_inc(sv)); | |
150 | if (!was_temp) { | |
151 | SvTEMP_off(sv); | |
152 | } | |
153 | ||
455ece5e | 154 | save_magic(mgs_ix, sv); |
463ee0b2 | 155 | |
ff76feab AMS |
156 | /* We must call svt_get(sv, mg) for each valid entry in the linked |
157 | list of magic. svt_get() may delete the current entry, add new | |
158 | magic to the head of the list, or upgrade the SV. AMS 20010810 */ | |
159 | ||
160 | newmg = cur = head = mg = SvMAGIC(sv); | |
161 | while (mg) { | |
35a4481c | 162 | const MGVTBL * const vtbl = mg->mg_virtual; |
ff76feab | 163 | |
2b260de0 | 164 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
316ad4fe | 165 | CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg); |
b77f7d40 | 166 | |
58f82c5c DM |
167 | /* guard against magic having been deleted - eg FETCH calling |
168 | * untie */ | |
169 | if (!SvMAGIC(sv)) | |
170 | break; | |
b77f7d40 | 171 | |
ff76feab AMS |
172 | /* Don't restore the flags for this entry if it was deleted. */ |
173 | if (mg->mg_flags & MGf_GSKIP) | |
174 | (SSPTR(mgs_ix, MGS *))->mgs_flags = 0; | |
a0d0e21e | 175 | } |
ff76feab AMS |
176 | |
177 | mg = mg->mg_moremagic; | |
178 | ||
0723351e | 179 | if (have_new) { |
ff76feab AMS |
180 | /* Have we finished with the new entries we saw? Start again |
181 | where we left off (unless there are more new entries). */ | |
182 | if (mg == head) { | |
0723351e | 183 | have_new = 0; |
ff76feab AMS |
184 | mg = cur; |
185 | head = newmg; | |
186 | } | |
187 | } | |
188 | ||
189 | /* Were any new entries added? */ | |
0723351e NC |
190 | if (!have_new && (newmg = SvMAGIC(sv)) != head) { |
191 | have_new = 1; | |
ff76feab AMS |
192 | cur = mg; |
193 | mg = newmg; | |
760ac839 | 194 | } |
79072805 | 195 | } |
463ee0b2 | 196 | |
acfe0abc | 197 | restore_magic(aTHX_ INT2PTR(void *, (IV)mgs_ix)); |
6683b158 NC |
198 | |
199 | if (SvREFCNT(sv) == 1) { | |
200 | /* We hold the last reference to this SV, which implies that the | |
201 | SV was deleted as a side effect of the routines we called. */ | |
0c34ef67 | 202 | SvOK_off(sv); |
6683b158 | 203 | } |
79072805 LW |
204 | return 0; |
205 | } | |
206 | ||
954c1994 GS |
207 | /* |
208 | =for apidoc mg_set | |
209 | ||
210 | Do magic after a value is assigned to the SV. See C<sv_magic>. | |
211 | ||
212 | =cut | |
213 | */ | |
214 | ||
79072805 | 215 | int |
864dbfa3 | 216 | Perl_mg_set(pTHX_ SV *sv) |
79072805 | 217 | { |
35a4481c | 218 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 219 | MAGIC* mg; |
463ee0b2 LW |
220 | MAGIC* nextmg; |
221 | ||
455ece5e | 222 | save_magic(mgs_ix, sv); |
463ee0b2 LW |
223 | |
224 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
e1ec3a88 | 225 | const MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 226 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
227 | if (mg->mg_flags & MGf_GSKIP) { |
228 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
455ece5e | 229 | (SSPTR(mgs_ix, MGS*))->mgs_flags = 0; |
a0d0e21e | 230 | } |
2b260de0 | 231 | if (vtbl && vtbl->svt_set) |
fc0dc3b3 | 232 | CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg); |
79072805 | 233 | } |
463ee0b2 | 234 | |
acfe0abc | 235 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
236 | return 0; |
237 | } | |
238 | ||
954c1994 GS |
239 | /* |
240 | =for apidoc mg_length | |
241 | ||
242 | Report on the SV's length. See C<sv_magic>. | |
243 | ||
244 | =cut | |
245 | */ | |
246 | ||
79072805 | 247 | U32 |
864dbfa3 | 248 | Perl_mg_length(pTHX_ SV *sv) |
79072805 LW |
249 | { |
250 | MAGIC* mg; | |
463ee0b2 | 251 | STRLEN len; |
463ee0b2 | 252 | |
79072805 | 253 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 254 | const MGVTBL * const vtbl = mg->mg_virtual; |
2b260de0 | 255 | if (vtbl && vtbl->svt_len) { |
35a4481c | 256 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
455ece5e | 257 | save_magic(mgs_ix, sv); |
a0d0e21e | 258 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 259 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 260 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
85e6fe83 LW |
261 | return len; |
262 | } | |
263 | } | |
264 | ||
35a4481c | 265 | if (DO_UTF8(sv)) { |
5636d518 DB |
266 | U8 *s = (U8*)SvPV(sv, len); |
267 | len = Perl_utf8_length(aTHX_ s, s + len); | |
268 | } | |
269 | else | |
270 | (void)SvPV(sv, len); | |
463ee0b2 | 271 | return len; |
79072805 LW |
272 | } |
273 | ||
8fb26106 | 274 | I32 |
864dbfa3 | 275 | Perl_mg_size(pTHX_ SV *sv) |
93965878 NIS |
276 | { |
277 | MAGIC* mg; | |
ac27b0f5 | 278 | |
93965878 | 279 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 280 | const MGVTBL* const vtbl = mg->mg_virtual; |
2b260de0 | 281 | if (vtbl && vtbl->svt_len) { |
35a4481c AL |
282 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
283 | I32 len; | |
455ece5e | 284 | save_magic(mgs_ix, sv); |
93965878 | 285 | /* omit MGf_GSKIP -- not changed here */ |
fc0dc3b3 | 286 | len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg); |
acfe0abc | 287 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
93965878 NIS |
288 | return len; |
289 | } | |
290 | } | |
291 | ||
292 | switch(SvTYPE(sv)) { | |
293 | case SVt_PVAV: | |
35a4481c | 294 | return AvFILLp((AV *) sv); /* Fallback to non-tied array */ |
93965878 NIS |
295 | case SVt_PVHV: |
296 | /* FIXME */ | |
297 | default: | |
cea2e8a9 | 298 | Perl_croak(aTHX_ "Size magic not implemented"); |
93965878 NIS |
299 | break; |
300 | } | |
301 | return 0; | |
302 | } | |
303 | ||
954c1994 GS |
304 | /* |
305 | =for apidoc mg_clear | |
306 | ||
307 | Clear something magical that the SV represents. See C<sv_magic>. | |
308 | ||
309 | =cut | |
310 | */ | |
311 | ||
79072805 | 312 | int |
864dbfa3 | 313 | Perl_mg_clear(pTHX_ SV *sv) |
79072805 | 314 | { |
35a4481c | 315 | const I32 mgs_ix = SSNEW(sizeof(MGS)); |
79072805 | 316 | MAGIC* mg; |
463ee0b2 | 317 | |
455ece5e | 318 | save_magic(mgs_ix, sv); |
463ee0b2 | 319 | |
79072805 | 320 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 321 | const MGVTBL* const vtbl = mg->mg_virtual; |
a0d0e21e | 322 | /* omit GSKIP -- never set here */ |
727405f8 | 323 | |
2b260de0 | 324 | if (vtbl && vtbl->svt_clear) |
fc0dc3b3 | 325 | CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg); |
79072805 | 326 | } |
463ee0b2 | 327 | |
acfe0abc | 328 | restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix)); |
79072805 LW |
329 | return 0; |
330 | } | |
331 | ||
954c1994 GS |
332 | /* |
333 | =for apidoc mg_find | |
334 | ||
335 | Finds the magic pointer for type matching the SV. See C<sv_magic>. | |
336 | ||
337 | =cut | |
338 | */ | |
339 | ||
93a17b20 | 340 | MAGIC* |
35a4481c | 341 | Perl_mg_find(pTHX_ const SV *sv, int type) |
93a17b20 | 342 | { |
35a4481c AL |
343 | if (sv) { |
344 | MAGIC *mg; | |
345 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
346 | if (mg->mg_type == type) | |
347 | return mg; | |
348 | } | |
93a17b20 LW |
349 | } |
350 | return 0; | |
351 | } | |
352 | ||
954c1994 GS |
353 | /* |
354 | =for apidoc mg_copy | |
355 | ||
356 | Copies the magic from one SV to another. See C<sv_magic>. | |
357 | ||
358 | =cut | |
359 | */ | |
360 | ||
79072805 | 361 | int |
864dbfa3 | 362 | Perl_mg_copy(pTHX_ SV *sv, SV *nsv, const char *key, I32 klen) |
79072805 | 363 | { |
463ee0b2 | 364 | int count = 0; |
79072805 | 365 | MAGIC* mg; |
463ee0b2 | 366 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
35a4481c | 367 | const MGVTBL* const vtbl = mg->mg_virtual; |
68795e93 NIS |
368 | if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){ |
369 | count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen); | |
370 | } | |
371 | else if (isUPPER(mg->mg_type)) { | |
33c27489 | 372 | sv_magic(nsv, |
14befaf4 DM |
373 | mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) : |
374 | (mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj) | |
375 | ? sv : mg->mg_obj, | |
33c27489 | 376 | toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 377 | count++; |
79072805 | 378 | } |
79072805 | 379 | } |
463ee0b2 | 380 | return count; |
79072805 LW |
381 | } |
382 | ||
954c1994 GS |
383 | /* |
384 | =for apidoc mg_free | |
385 | ||
386 | Free any magic storage used by the SV. See C<sv_magic>. | |
387 | ||
388 | =cut | |
389 | */ | |
390 | ||
79072805 | 391 | int |
864dbfa3 | 392 | Perl_mg_free(pTHX_ SV *sv) |
79072805 LW |
393 | { |
394 | MAGIC* mg; | |
395 | MAGIC* moremagic; | |
396 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
35a4481c | 397 | const MGVTBL* const vtbl = mg->mg_virtual; |
79072805 | 398 | moremagic = mg->mg_moremagic; |
2b260de0 | 399 | if (vtbl && vtbl->svt_free) |
fc0dc3b3 | 400 | CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg); |
14befaf4 | 401 | if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) { |
979acdb5 | 402 | if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8) |
88e89b8a | 403 | Safefree(mg->mg_ptr); |
565764a8 | 404 | else if (mg->mg_len == HEf_SVKEY) |
88e89b8a | 405 | SvREFCNT_dec((SV*)mg->mg_ptr); |
d460ef45 | 406 | } |
b881518d JH |
407 | if (mg->mg_flags & MGf_REFCOUNTED) |
408 | SvREFCNT_dec(mg->mg_obj); | |
79072805 LW |
409 | Safefree(mg); |
410 | } | |
b162af07 | 411 | SvMAGIC_set(sv, NULL); |
79072805 LW |
412 | return 0; |
413 | } | |
414 | ||
79072805 | 415 | #include <signal.h> |
79072805 | 416 | |
942e002e | 417 | U32 |
864dbfa3 | 418 | Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 419 | { |
35a4481c | 420 | register const REGEXP *rx; |
dd374669 | 421 | (void)sv; |
6cef1e77 | 422 | |
aaa362c4 | 423 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
8f580fb8 IZ |
424 | if (mg->mg_obj) /* @+ */ |
425 | return rx->nparens; | |
426 | else /* @- */ | |
427 | return rx->lastparen; | |
428 | } | |
ac27b0f5 | 429 | |
942e002e | 430 | return (U32)-1; |
6cef1e77 IZ |
431 | } |
432 | ||
433 | int | |
864dbfa3 | 434 | Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg) |
6cef1e77 | 435 | { |
6cef1e77 | 436 | register REGEXP *rx; |
6cef1e77 | 437 | |
aaa362c4 | 438 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
35a4481c AL |
439 | register const I32 paren = mg->mg_len; |
440 | register I32 s; | |
441 | register I32 t; | |
6cef1e77 IZ |
442 | if (paren < 0) |
443 | return 0; | |
eb160463 | 444 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
445 | (s = rx->startp[paren]) != -1 && |
446 | (t = rx->endp[paren]) != -1) | |
6cef1e77 | 447 | { |
35a4481c | 448 | register I32 i; |
6cef1e77 | 449 | if (mg->mg_obj) /* @+ */ |
cf93c79d | 450 | i = t; |
6cef1e77 | 451 | else /* @- */ |
cf93c79d | 452 | i = s; |
727405f8 | 453 | |
a30b2f1f | 454 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
1aa99e6b | 455 | char *b = rx->subbeg; |
0064a8a9 JH |
456 | if (b) |
457 | i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i)); | |
1aa99e6b | 458 | } |
0064a8a9 JH |
459 | |
460 | sv_setiv(sv, i); | |
6cef1e77 IZ |
461 | } |
462 | } | |
463 | return 0; | |
464 | } | |
465 | ||
e4b89193 | 466 | int |
a29d06ed MG |
467 | Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg) |
468 | { | |
dd374669 | 469 | (void)sv; (void)mg; |
a29d06ed | 470 | Perl_croak(aTHX_ PL_no_modify); |
e4b89193 | 471 | /* NOT REACHED */ |
3c8a6f86 NC |
472 | #ifndef HASATTRIBUTE |
473 | /* No __attribute__, so the compiler doesn't know that croak never returns | |
474 | */ | |
475 | return 0; | |
476 | #endif | |
a29d06ed MG |
477 | } |
478 | ||
93a17b20 | 479 | U32 |
864dbfa3 | 480 | Perl_magic_len(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 LW |
481 | { |
482 | register I32 paren; | |
93a17b20 | 483 | register I32 i; |
dd374669 | 484 | register const REGEXP *rx; |
a197cbdd | 485 | I32 s1, t1; |
93a17b20 LW |
486 | |
487 | switch (*mg->mg_ptr) { | |
488 | case '1': case '2': case '3': case '4': | |
489 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 490 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d | 491 | |
ffc61ed2 | 492 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
93a17b20 | 493 | getparen: |
eb160463 | 494 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
495 | (s1 = rx->startp[paren]) != -1 && |
496 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 497 | { |
cf93c79d | 498 | i = t1 - s1; |
a197cbdd | 499 | getlen: |
a30b2f1f | 500 | if (i > 0 && RX_MATCH_UTF8(rx)) { |
ffc61ed2 | 501 | char *s = rx->subbeg + s1; |
a197cbdd | 502 | char *send = rx->subbeg + t1; |
ffc61ed2 | 503 | |
6d5fa195 | 504 | i = t1 - s1; |
60425c38 JH |
505 | if (is_utf8_string((U8*)s, i)) |
506 | i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send); | |
a197cbdd | 507 | } |
ffc61ed2 | 508 | if (i < 0) |
0844c848 | 509 | Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i); |
ffc61ed2 | 510 | return i; |
93a17b20 | 511 | } |
235bddc8 NIS |
512 | else { |
513 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 514 | report_uninit(sv); |
235bddc8 NIS |
515 | } |
516 | } | |
517 | else { | |
518 | if (ckWARN(WARN_UNINITIALIZED)) | |
29489e7c | 519 | report_uninit(sv); |
93a17b20 | 520 | } |
748a9306 | 521 | return 0; |
93a17b20 | 522 | case '+': |
aaa362c4 | 523 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 524 | paren = rx->lastparen; |
13f57bf8 CS |
525 | if (paren) |
526 | goto getparen; | |
93a17b20 | 527 | } |
748a9306 | 528 | return 0; |
a01268b5 JH |
529 | case '\016': /* ^N */ |
530 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
531 | paren = rx->lastcloseparen; | |
532 | if (paren) | |
533 | goto getparen; | |
534 | } | |
535 | return 0; | |
93a17b20 | 536 | case '`': |
aaa362c4 | 537 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
538 | if (rx->startp[0] != -1) { |
539 | i = rx->startp[0]; | |
a197cbdd GS |
540 | if (i > 0) { |
541 | s1 = 0; | |
542 | t1 = i; | |
543 | goto getlen; | |
544 | } | |
93a17b20 | 545 | } |
93a17b20 | 546 | } |
748a9306 | 547 | return 0; |
93a17b20 | 548 | case '\'': |
aaa362c4 | 549 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
550 | if (rx->endp[0] != -1) { |
551 | i = rx->sublen - rx->endp[0]; | |
a197cbdd GS |
552 | if (i > 0) { |
553 | s1 = rx->endp[0]; | |
554 | t1 = rx->sublen; | |
555 | goto getlen; | |
556 | } | |
93a17b20 | 557 | } |
93a17b20 | 558 | } |
748a9306 | 559 | return 0; |
93a17b20 LW |
560 | } |
561 | magic_get(sv,mg); | |
2d8e6c8d GS |
562 | if (!SvPOK(sv) && SvNIOK(sv)) { |
563 | STRLEN n_a; | |
564 | sv_2pv(sv, &n_a); | |
565 | } | |
93a17b20 LW |
566 | if (SvPOK(sv)) |
567 | return SvCUR(sv); | |
568 | return 0; | |
569 | } | |
570 | ||
79072805 | 571 | int |
864dbfa3 | 572 | Perl_magic_get(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 573 | { |
27da23d5 | 574 | dVAR; |
79072805 | 575 | register I32 paren; |
35272f84 | 576 | register char *s = NULL; |
79072805 | 577 | register I32 i; |
d9f97599 | 578 | register REGEXP *rx; |
79072805 LW |
579 | |
580 | switch (*mg->mg_ptr) { | |
748a9306 | 581 | case '\001': /* ^A */ |
3280af22 | 582 | sv_setsv(sv, PL_bodytarget); |
748a9306 | 583 | break; |
49460fe6 NIS |
584 | case '\003': /* ^C */ |
585 | sv_setiv(sv, (IV)PL_minus_c); | |
586 | break; | |
587 | ||
79072805 | 588 | case '\004': /* ^D */ |
aea4f609 | 589 | sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK)); |
79072805 | 590 | break; |
28f23441 | 591 | case '\005': /* ^E */ |
0a378802 | 592 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 593 | #ifdef MACOS_TRADITIONAL |
0a378802 JH |
594 | { |
595 | char msg[256]; | |
727405f8 | 596 | |
0a378802 | 597 | sv_setnv(sv,(double)gMacPerl_OSErr); |
727405f8 | 598 | sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : ""); |
0a378802 | 599 | } |
727405f8 | 600 | #else |
28f23441 | 601 | #ifdef VMS |
0a378802 JH |
602 | { |
603 | # include <descrip.h> | |
604 | # include <starlet.h> | |
605 | char msg[255]; | |
606 | $DESCRIPTOR(msgdsc,msg); | |
607 | sv_setnv(sv,(NV) vaxc$errno); | |
608 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) | |
609 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); | |
610 | else | |
611 | sv_setpv(sv,""); | |
612 | } | |
28f23441 | 613 | #else |
88e89b8a | 614 | #ifdef OS2 |
0a378802 JH |
615 | if (!(_emx_env & 0x200)) { /* Under DOS */ |
616 | sv_setnv(sv, (NV)errno); | |
617 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
618 | } else { | |
619 | if (errno != errno_isOS2) { | |
620 | int tmp = _syserrno(); | |
621 | if (tmp) /* 2nd call to _syserrno() makes it 0 */ | |
622 | Perl_rc = tmp; | |
623 | } | |
624 | sv_setnv(sv, (NV)Perl_rc); | |
625 | sv_setpv(sv, os2error(Perl_rc)); | |
626 | } | |
88e89b8a | 627 | #else |
22fae026 | 628 | #ifdef WIN32 |
0a378802 JH |
629 | { |
630 | DWORD dwErr = GetLastError(); | |
631 | sv_setnv(sv, (NV)dwErr); | |
632 | if (dwErr) | |
633 | { | |
634 | PerlProc_GetOSError(sv, dwErr); | |
635 | } | |
636 | else | |
637 | sv_setpv(sv, ""); | |
638 | SetLastError(dwErr); | |
639 | } | |
22fae026 | 640 | #else |
f6c8f21d RGS |
641 | { |
642 | int saveerrno = errno; | |
643 | sv_setnv(sv, (NV)errno); | |
644 | sv_setpv(sv, errno ? Strerror(errno) : ""); | |
645 | errno = saveerrno; | |
646 | } | |
28f23441 | 647 | #endif |
88e89b8a | 648 | #endif |
22fae026 | 649 | #endif |
cd39f2b6 | 650 | #endif |
0a378802 JH |
651 | SvNOK_on(sv); /* what a wonderful hack! */ |
652 | } | |
653 | else if (strEQ(mg->mg_ptr+1, "NCODING")) | |
654 | sv_setsv(sv, PL_encoding); | |
655 | break; | |
79072805 | 656 | case '\006': /* ^F */ |
3280af22 | 657 | sv_setiv(sv, (IV)PL_maxsysfd); |
79072805 | 658 | break; |
a0d0e21e | 659 | case '\010': /* ^H */ |
3280af22 | 660 | sv_setiv(sv, (IV)PL_hints); |
a0d0e21e | 661 | break; |
9d116dd7 | 662 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
663 | if (PL_inplace) |
664 | sv_setpv(sv, PL_inplace); | |
79072805 | 665 | else |
3280af22 | 666 | sv_setsv(sv, &PL_sv_undef); |
79072805 | 667 | break; |
ac27b0f5 | 668 | case '\017': /* ^O & ^OPEN */ |
3511154c | 669 | if (*(mg->mg_ptr+1) == '\0') { |
ac27b0f5 | 670 | sv_setpv(sv, PL_osname); |
3511154c DM |
671 | SvTAINTED_off(sv); |
672 | } | |
ac27b0f5 NIS |
673 | else if (strEQ(mg->mg_ptr, "\017PEN")) { |
674 | if (!PL_compiling.cop_io) | |
675 | sv_setsv(sv, &PL_sv_undef); | |
676 | else { | |
677 | sv_setsv(sv, PL_compiling.cop_io); | |
678 | } | |
679 | } | |
28f23441 | 680 | break; |
79072805 | 681 | case '\020': /* ^P */ |
3280af22 | 682 | sv_setiv(sv, (IV)PL_perldb); |
79072805 | 683 | break; |
fb73857a | 684 | case '\023': /* ^S */ |
4ffa73a3 | 685 | if (*(mg->mg_ptr+1) == '\0') { |
3280af22 | 686 | if (PL_lex_state != LEX_NOTPARSING) |
0c34ef67 | 687 | SvOK_off(sv); |
3280af22 | 688 | else if (PL_in_eval) |
6dc8a9e4 | 689 | sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE)); |
a4268c0a AMS |
690 | else |
691 | sv_setiv(sv, 0); | |
d58bf5aa | 692 | } |
fb73857a | 693 | break; |
79072805 | 694 | case '\024': /* ^T */ |
7c36658b | 695 | if (*(mg->mg_ptr+1) == '\0') { |
88e89b8a | 696 | #ifdef BIG_TIME |
7c36658b | 697 | sv_setnv(sv, PL_basetime); |
88e89b8a | 698 | #else |
7c36658b | 699 | sv_setiv(sv, (IV)PL_basetime); |
88e89b8a | 700 | #endif |
7c36658b MS |
701 | } |
702 | else if (strEQ(mg->mg_ptr, "\024AINT")) | |
9aa05f58 RGS |
703 | sv_setiv(sv, PL_tainting |
704 | ? (PL_taint_warn || PL_unsafe ? -1 : 1) | |
705 | : 0); | |
7c36658b | 706 | break; |
7cebcbc0 | 707 | case '\025': /* $^UNICODE, $^UTF8LOCALE */ |
a05d7ebb JH |
708 | if (strEQ(mg->mg_ptr, "\025NICODE")) |
709 | sv_setuv(sv, (UV) PL_unicode); | |
7cebcbc0 NC |
710 | else if (strEQ(mg->mg_ptr, "\025TF8LOCALE")) |
711 | sv_setuv(sv, (UV) PL_utf8locale); | |
fde18df1 JH |
712 | break; |
713 | case '\027': /* ^W & $^WARNING_BITS */ | |
4438c4b7 JH |
714 | if (*(mg->mg_ptr+1) == '\0') |
715 | sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE)); | |
0a378802 | 716 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
d3a7d8c7 GS |
717 | if (PL_compiling.cop_warnings == pWARN_NONE || |
718 | PL_compiling.cop_warnings == pWARN_STD) | |
4438c4b7 JH |
719 | { |
720 | sv_setpvn(sv, WARN_NONEstring, WARNsize) ; | |
721 | } | |
d3a7d8c7 | 722 | else if (PL_compiling.cop_warnings == pWARN_ALL) { |
75b6c4ca RGS |
723 | /* Get the bit mask for $warnings::Bits{all}, because |
724 | * it could have been extended by warnings::register */ | |
725 | SV **bits_all; | |
726 | HV *bits=get_hv("warnings::Bits", FALSE); | |
727 | if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) { | |
728 | sv_setsv(sv, *bits_all); | |
729 | } | |
730 | else { | |
731 | sv_setpvn(sv, WARN_ALLstring, WARNsize) ; | |
732 | } | |
ac27b0f5 | 733 | } |
4438c4b7 JH |
734 | else { |
735 | sv_setsv(sv, PL_compiling.cop_warnings); | |
ac27b0f5 | 736 | } |
d3a7d8c7 | 737 | SvPOK_only(sv); |
4438c4b7 | 738 | } |
79072805 LW |
739 | break; |
740 | case '1': case '2': case '3': case '4': | |
741 | case '5': case '6': case '7': case '8': case '9': case '&': | |
aaa362c4 | 742 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
743 | I32 s1, t1; |
744 | ||
a863c7d1 MB |
745 | /* |
746 | * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); | |
747 | * XXX Does the new way break anything? | |
748 | */ | |
ffc61ed2 | 749 | paren = atoi(mg->mg_ptr); /* $& is in [0] */ |
79072805 | 750 | getparen: |
eb160463 | 751 | if (paren <= (I32)rx->nparens && |
cf93c79d IZ |
752 | (s1 = rx->startp[paren]) != -1 && |
753 | (t1 = rx->endp[paren]) != -1) | |
bbce6d69 | 754 | { |
cf93c79d IZ |
755 | i = t1 - s1; |
756 | s = rx->subbeg + s1; | |
01ec43d0 | 757 | if (!rx->subbeg) |
c2e66d9e GS |
758 | break; |
759 | ||
13f57bf8 | 760 | getrx: |
748a9306 | 761 | if (i >= 0) { |
cf93c79d | 762 | sv_setpvn(sv, s, i); |
a30b2f1f | 763 | if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i)) |
7e2040f0 GS |
764 | SvUTF8_on(sv); |
765 | else | |
766 | SvUTF8_off(sv); | |
e9814ee1 HS |
767 | if (PL_tainting) { |
768 | if (RX_MATCH_TAINTED(rx)) { | |
769 | MAGIC* mg = SvMAGIC(sv); | |
770 | MAGIC* mgt; | |
771 | PL_tainted = 1; | |
b162af07 | 772 | SvMAGIC_set(sv, mg->mg_moremagic); |
e9814ee1 HS |
773 | SvTAINT(sv); |
774 | if ((mgt = SvMAGIC(sv))) { | |
775 | mg->mg_moremagic = mgt; | |
b162af07 | 776 | SvMAGIC_set(sv, mg); |
e9814ee1 HS |
777 | } |
778 | } else | |
779 | SvTAINTED_off(sv); | |
780 | } | |
748a9306 LW |
781 | break; |
782 | } | |
79072805 | 783 | } |
79072805 | 784 | } |
3280af22 | 785 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
786 | break; |
787 | case '+': | |
aaa362c4 | 788 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
d9f97599 | 789 | paren = rx->lastparen; |
a0d0e21e LW |
790 | if (paren) |
791 | goto getparen; | |
79072805 | 792 | } |
3280af22 | 793 | sv_setsv(sv,&PL_sv_undef); |
79072805 | 794 | break; |
a01268b5 JH |
795 | case '\016': /* ^N */ |
796 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { | |
797 | paren = rx->lastcloseparen; | |
798 | if (paren) | |
799 | goto getparen; | |
800 | } | |
801 | sv_setsv(sv,&PL_sv_undef); | |
802 | break; | |
79072805 | 803 | case '`': |
aaa362c4 | 804 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
805 | if ((s = rx->subbeg) && rx->startp[0] != -1) { |
806 | i = rx->startp[0]; | |
13f57bf8 | 807 | goto getrx; |
79072805 | 808 | } |
79072805 | 809 | } |
3280af22 | 810 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
811 | break; |
812 | case '\'': | |
aaa362c4 | 813 | if (PL_curpm && (rx = PM_GETRE(PL_curpm))) { |
cf93c79d IZ |
814 | if (rx->subbeg && rx->endp[0] != -1) { |
815 | s = rx->subbeg + rx->endp[0]; | |
816 | i = rx->sublen - rx->endp[0]; | |
13f57bf8 | 817 | goto getrx; |
79072805 | 818 | } |
79072805 | 819 | } |
3280af22 | 820 | sv_setsv(sv,&PL_sv_undef); |
79072805 LW |
821 | break; |
822 | case '.': | |
823 | #ifndef lint | |
3280af22 | 824 | if (GvIO(PL_last_in_gv)) { |
357c8808 | 825 | sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv))); |
79072805 LW |
826 | } |
827 | #endif | |
828 | break; | |
829 | case '?': | |
809a5acc | 830 | { |
809a5acc | 831 | sv_setiv(sv, (IV)STATUS_CURRENT); |
ff0cee69 | 832 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
833 | LvTARGOFF(sv) = PL_statusvalue; |
834 | LvTARGLEN(sv) = PL_statusvalue_vms; | |
ff0cee69 | 835 | #endif |
809a5acc | 836 | } |
79072805 LW |
837 | break; |
838 | case '^': | |
0daa599b RGS |
839 | if (GvIOp(PL_defoutgv)) |
840 | s = IoTOP_NAME(GvIOp(PL_defoutgv)); | |
79072805 LW |
841 | if (s) |
842 | sv_setpv(sv,s); | |
843 | else { | |
3280af22 | 844 | sv_setpv(sv,GvENAME(PL_defoutgv)); |
79072805 LW |
845 | sv_catpv(sv,"_TOP"); |
846 | } | |
847 | break; | |
848 | case '~': | |
0daa599b RGS |
849 | if (GvIOp(PL_defoutgv)) |
850 | s = IoFMT_NAME(GvIOp(PL_defoutgv)); | |
79072805 | 851 | if (!s) |
3280af22 | 852 | s = GvENAME(PL_defoutgv); |
79072805 LW |
853 | sv_setpv(sv,s); |
854 | break; | |
855 | #ifndef lint | |
856 | case '=': | |
0daa599b RGS |
857 | if (GvIOp(PL_defoutgv)) |
858 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv))); | |
79072805 LW |
859 | break; |
860 | case '-': | |
0daa599b RGS |
861 | if (GvIOp(PL_defoutgv)) |
862 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv))); | |
79072805 LW |
863 | break; |
864 | case '%': | |
0daa599b RGS |
865 | if (GvIOp(PL_defoutgv)) |
866 | sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv))); | |
79072805 LW |
867 | break; |
868 | #endif | |
869 | case ':': | |
870 | break; | |
871 | case '/': | |
872 | break; | |
873 | case '[': | |
3280af22 | 874 | WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase)); |
79072805 LW |
875 | break; |
876 | case '|': | |
0daa599b RGS |
877 | if (GvIOp(PL_defoutgv)) |
878 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 ); | |
79072805 LW |
879 | break; |
880 | case ',': | |
79072805 LW |
881 | break; |
882 | case '\\': | |
b2ce0fda | 883 | if (PL_ors_sv) |
f28098ff | 884 | sv_copypv(sv, PL_ors_sv); |
79072805 LW |
885 | break; |
886 | case '#': | |
3280af22 | 887 | sv_setpv(sv,PL_ofmt); |
79072805 LW |
888 | break; |
889 | case '!': | |
a5f75d66 | 890 | #ifdef VMS |
65202027 | 891 | sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a | 892 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 | 893 | #else |
88e89b8a | 894 | { |
895 | int saveerrno = errno; | |
65202027 | 896 | sv_setnv(sv, (NV)errno); |
88e89b8a | 897 | #ifdef OS2 |
ed344e4f IZ |
898 | if (errno == errno_isOS2 || errno == errno_isOS2_set) |
899 | sv_setpv(sv, os2error(Perl_rc)); | |
88e89b8a | 900 | else |
a5f75d66 | 901 | #endif |
2304df62 | 902 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a | 903 | errno = saveerrno; |
904 | } | |
905 | #endif | |
946ec16e | 906 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 LW |
907 | break; |
908 | case '<': | |
3280af22 | 909 | sv_setiv(sv, (IV)PL_uid); |
79072805 LW |
910 | break; |
911 | case '>': | |
3280af22 | 912 | sv_setiv(sv, (IV)PL_euid); |
79072805 LW |
913 | break; |
914 | case '(': | |
3280af22 | 915 | sv_setiv(sv, (IV)PL_gid); |
a52cb5f7 | 916 | #ifdef HAS_GETGROUPS |
785fb66b | 917 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid); |
a52cb5f7 | 918 | #endif |
79072805 LW |
919 | goto add_groups; |
920 | case ')': | |
3280af22 | 921 | sv_setiv(sv, (IV)PL_egid); |
a52cb5f7 | 922 | #ifdef HAS_GETGROUPS |
785fb66b | 923 | Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid); |
a52cb5f7 | 924 | #endif |
79072805 | 925 | add_groups: |
79072805 | 926 | #ifdef HAS_GETGROUPS |
79072805 | 927 | { |
a0d0e21e | 928 | Groups_t gary[NGROUPS]; |
79072805 | 929 | i = getgroups(NGROUPS,gary); |
46fc3d4c | 930 | while (--i >= 0) |
785fb66b | 931 | Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]); |
79072805 LW |
932 | } |
933 | #endif | |
155aba94 | 934 | (void)SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 | 935 | break; |
cd39f2b6 | 936 | #ifndef MACOS_TRADITIONAL |
79072805 LW |
937 | case '0': |
938 | break; | |
cd39f2b6 | 939 | #endif |
79072805 | 940 | } |
a0d0e21e | 941 | return 0; |
79072805 LW |
942 | } |
943 | ||
944 | int | |
864dbfa3 | 945 | Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
946 | { |
947 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
948 | ||
949 | if (uf && uf->uf_val) | |
24f81a43 | 950 | (*uf->uf_val)(aTHX_ uf->uf_index, sv); |
79072805 LW |
951 | return 0; |
952 | } | |
953 | ||
954 | int | |
864dbfa3 | 955 | Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 956 | { |
27da23d5 | 957 | dVAR; |
79072805 | 958 | register char *s; |
88e89b8a | 959 | char *ptr; |
5aabfad6 | 960 | STRLEN len, klen; |
1e422769 | 961 | |
a0d0e21e | 962 | s = SvPV(sv,len); |
5aabfad6 | 963 | ptr = MgPV(mg,klen); |
88e89b8a | 964 | my_setenv(ptr, s); |
1e422769 | 965 | |
a0d0e21e LW |
966 | #ifdef DYNAMIC_ENV_FETCH |
967 | /* We just undefd an environment var. Is a replacement */ | |
968 | /* waiting in the wings? */ | |
969 | if (!len) { | |
5aabfad6 | 970 | SV **valp; |
6b88bc9c | 971 | if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE))) |
5aabfad6 | 972 | s = SvPV(*valp, len); |
a0d0e21e LW |
973 | } |
974 | #endif | |
1e422769 | 975 | |
39e571d4 | 976 | #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS) |
79072805 LW |
977 | /* And you'll never guess what the dog had */ |
978 | /* in its mouth... */ | |
3280af22 | 979 | if (PL_tainting) { |
1e422769 | 980 | MgTAINTEDDIR_off(mg); |
981 | #ifdef VMS | |
5aabfad6 | 982 | if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { |
1e422769 | 983 | char pathbuf[256], eltbuf[256], *cp, *elt = s; |
c623ac67 | 984 | Stat_t sbuf; |
1e422769 | 985 | int i = 0, j = 0; |
986 | ||
987 | do { /* DCL$PATH may be a search list */ | |
988 | while (1) { /* as may dev portion of any element */ | |
989 | if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) { | |
990 | if ( *(cp+1) == '.' || *(cp+1) == '-' || | |
991 | cando_by_name(S_IWUSR,0,elt) ) { | |
992 | MgTAINTEDDIR_on(mg); | |
993 | return 0; | |
994 | } | |
995 | } | |
996 | if ((cp = strchr(elt, ':')) != Nullch) | |
997 | *cp = '\0'; | |
998 | if (my_trnlnm(elt, eltbuf, j++)) | |
999 | elt = eltbuf; | |
1000 | else | |
1001 | break; | |
1002 | } | |
1003 | j = 0; | |
1004 | } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf)); | |
1005 | } | |
1006 | #endif /* VMS */ | |
5aabfad6 | 1007 | if (s && klen == 4 && strEQ(ptr,"PATH")) { |
a0d0e21e | 1008 | char *strend = s + len; |
463ee0b2 LW |
1009 | |
1010 | while (s < strend) { | |
96827780 | 1011 | char tmpbuf[256]; |
c623ac67 | 1012 | Stat_t st; |
5f74f29c | 1013 | I32 i; |
96827780 | 1014 | s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, |
fc36a67e | 1015 | s, strend, ':', &i); |
463ee0b2 | 1016 | s++; |
96827780 MB |
1017 | if (i >= sizeof tmpbuf /* too long -- assume the worst */ |
1018 | || *tmpbuf != '/' | |
c6ed36e1 | 1019 | || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) { |
8990e307 | 1020 | MgTAINTEDDIR_on(mg); |
1e422769 | 1021 | return 0; |
1022 | } | |
463ee0b2 | 1023 | } |
79072805 LW |
1024 | } |
1025 | } | |
39e571d4 | 1026 | #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */ |
1e422769 | 1027 | |
79072805 LW |
1028 | return 0; |
1029 | } | |
1030 | ||
1031 | int | |
864dbfa3 | 1032 | Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg) |
85e6fe83 | 1033 | { |
2d8e6c8d | 1034 | STRLEN n_a; |
dd374669 | 1035 | (void)sv; |
2d8e6c8d | 1036 | my_setenv(MgPV(mg,n_a),Nullch); |
85e6fe83 LW |
1037 | return 0; |
1038 | } | |
1039 | ||
88e89b8a | 1040 | int |
864dbfa3 | 1041 | Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg) |
fb73857a | 1042 | { |
27da23d5 | 1043 | #if defined(VMS) || defined(EPOC) || defined(SYMBIAN) |
cea2e8a9 | 1044 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
fb73857a | 1045 | #else |
3280af22 | 1046 | if (PL_localizing) { |
fb73857a | 1047 | HE* entry; |
2d8e6c8d | 1048 | STRLEN n_a; |
fb73857a | 1049 | magic_clear_all_env(sv,mg); |
1050 | hv_iterinit((HV*)sv); | |
155aba94 | 1051 | while ((entry = hv_iternext((HV*)sv))) { |
fb73857a | 1052 | I32 keylen; |
1053 | my_setenv(hv_iterkey(entry, &keylen), | |
2d8e6c8d | 1054 | SvPV(hv_iterval((HV*)sv, entry), n_a)); |
fb73857a | 1055 | } |
1056 | } | |
1057 | #endif | |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | int | |
864dbfa3 | 1062 | Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg) |
66b1d557 | 1063 | { |
27da23d5 | 1064 | dVAR; |
2f42fcb0 | 1065 | #ifndef PERL_MICRO |
27da23d5 | 1066 | #if defined(VMS) || defined(EPOC) || defined(SYMBIAN) |
cea2e8a9 | 1067 | Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system"); |
3e3baf6d | 1068 | #else |
4efc5df6 | 1069 | # if defined(PERL_IMPLICIT_SYS) || defined(WIN32) |
7766f137 | 1070 | PerlEnv_clearenv(); |
4efc5df6 GS |
1071 | # else |
1072 | # ifdef USE_ENVIRON_ARRAY | |
1073 | # if defined(USE_ITHREADS) | |
1074 | /* only the parent thread can clobber the process environment */ | |
1075 | if (PL_curinterp == aTHX) | |
1076 | # endif | |
1077 | { | |
1078 | # ifndef PERL_USE_SAFE_PUTENV | |
50acdf95 | 1079 | if (!PL_use_safe_putenv) { |
66b1d557 HM |
1080 | I32 i; |
1081 | ||
3280af22 | 1082 | if (environ == PL_origenviron) |
f2517201 | 1083 | environ = (char**)safesysmalloc(sizeof(char*)); |
66b1d557 HM |
1084 | else |
1085 | for (i = 0; environ[i]; i++) | |
f2517201 | 1086 | safesysfree(environ[i]); |
50acdf95 | 1087 | } |
4efc5df6 | 1088 | # endif /* PERL_USE_SAFE_PUTENV */ |
f2517201 | 1089 | |
66b1d557 | 1090 | environ[0] = Nullch; |
4efc5df6 GS |
1091 | } |
1092 | # endif /* USE_ENVIRON_ARRAY */ | |
052c2dc6 | 1093 | # endif /* PERL_IMPLICIT_SYS || WIN32 */ |
2f42fcb0 JH |
1094 | #endif /* VMS || EPOC */ |
1095 | #endif /* !PERL_MICRO */ | |
dd374669 AL |
1096 | (void)sv; |
1097 | (void)mg; | |
3e3baf6d | 1098 | return 0; |
66b1d557 HM |
1099 | } |
1100 | ||
64ca3a65 | 1101 | #ifndef PERL_MICRO |
2d4fcd5e AJ |
1102 | #ifdef HAS_SIGPROCMASK |
1103 | static void | |
1104 | restore_sigmask(pTHX_ SV *save_sv) | |
1105 | { | |
1106 | sigset_t *ossetp = (sigset_t *) SvPV_nolen( save_sv ); | |
1107 | (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0); | |
1108 | } | |
1109 | #endif | |
66b1d557 | 1110 | int |
864dbfa3 | 1111 | Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1112 | { |
1113 | I32 i; | |
2d8e6c8d | 1114 | STRLEN n_a; |
88e89b8a | 1115 | /* Are we fetching a signal entry? */ |
2d8e6c8d | 1116 | i = whichsig(MgPV(mg,n_a)); |
e02bfb16 | 1117 | if (i > 0) { |
22c35a8c GS |
1118 | if(PL_psig_ptr[i]) |
1119 | sv_setsv(sv,PL_psig_ptr[i]); | |
88e89b8a | 1120 | else { |
85b332e2 | 1121 | Sighandler_t sigstate; |
2e34cc90 | 1122 | sigstate = rsignal_state(i); |
23ada85b | 1123 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1124 | if (PL_sig_handlers_initted && PL_sig_ignoring[i]) sigstate = SIG_IGN; |
2e34cc90 CL |
1125 | #endif |
1126 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1127 | if (PL_sig_handlers_initted && PL_sig_defaulting[i]) sigstate = SIG_DFL; |
85b332e2 | 1128 | #endif |
88e89b8a | 1129 | /* cache state so we don't fetch it again */ |
ff68c719 | 1130 | if(sigstate == SIG_IGN) |
88e89b8a | 1131 | sv_setpv(sv,"IGNORE"); |
1132 | else | |
3280af22 | 1133 | sv_setsv(sv,&PL_sv_undef); |
22c35a8c | 1134 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1135 | SvTEMP_off(sv); |
1136 | } | |
1137 | } | |
1138 | return 0; | |
1139 | } | |
1140 | int | |
864dbfa3 | 1141 | Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg) |
88e89b8a | 1142 | { |
2d4fcd5e AJ |
1143 | /* XXX Some of this code was copied from Perl_magic_setsig. A little |
1144 | * refactoring might be in order. | |
1145 | */ | |
27da23d5 | 1146 | dVAR; |
2d8e6c8d | 1147 | STRLEN n_a; |
35a4481c | 1148 | register const char *s = MgPV(mg,n_a); |
dd374669 | 1149 | (void)sv; |
2d4fcd5e | 1150 | if (*s == '_') { |
27da23d5 | 1151 | SV** svp = 0; |
2d4fcd5e AJ |
1152 | if (strEQ(s,"__DIE__")) |
1153 | svp = &PL_diehook; | |
1154 | else if (strEQ(s,"__WARN__")) | |
1155 | svp = &PL_warnhook; | |
1156 | else | |
1157 | Perl_croak(aTHX_ "No such hook: %s", s); | |
27da23d5 | 1158 | if (svp && *svp) { |
dd374669 | 1159 | SV *to_dec = *svp; |
2d4fcd5e AJ |
1160 | *svp = 0; |
1161 | SvREFCNT_dec(to_dec); | |
1162 | } | |
1163 | } | |
1164 | else { | |
1165 | I32 i; | |
1166 | /* Are we clearing a signal entry? */ | |
1167 | i = whichsig(s); | |
e02bfb16 | 1168 | if (i > 0) { |
2d4fcd5e AJ |
1169 | #ifdef HAS_SIGPROCMASK |
1170 | sigset_t set, save; | |
1171 | SV* save_sv; | |
1172 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1173 | sigemptyset(&set); | |
1174 | sigaddset(&set,i); | |
1175 | sigprocmask(SIG_BLOCK, &set, &save); | |
1176 | ENTER; | |
1177 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1178 | SAVEFREESV(save_sv); | |
1179 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1180 | #endif | |
1181 | PERL_ASYNC_CHECK(); | |
1182 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) | |
27da23d5 | 1183 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2d4fcd5e AJ |
1184 | #endif |
1185 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
27da23d5 | 1186 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1187 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1188 | #else |
1189 | (void)rsignal(i, SIG_DFL); | |
1190 | #endif | |
1191 | if(PL_psig_name[i]) { | |
1192 | SvREFCNT_dec(PL_psig_name[i]); | |
1193 | PL_psig_name[i]=0; | |
1194 | } | |
1195 | if(PL_psig_ptr[i]) { | |
dd374669 | 1196 | SV *to_dec=PL_psig_ptr[i]; |
2d4fcd5e AJ |
1197 | PL_psig_ptr[i]=0; |
1198 | LEAVE; | |
1199 | SvREFCNT_dec(to_dec); | |
1200 | } | |
1201 | else | |
1202 | LEAVE; | |
1203 | } | |
88e89b8a | 1204 | } |
1205 | return 0; | |
1206 | } | |
3d37d572 | 1207 | |
dd374669 AL |
1208 | static void |
1209 | S_raise_signal(pTHX_ int sig) | |
0a8e0eff NIS |
1210 | { |
1211 | /* Set a flag to say this signal is pending */ | |
1212 | PL_psig_pend[sig]++; | |
1213 | /* And one to say _a_ signal is pending */ | |
1214 | PL_sig_pending = 1; | |
1215 | } | |
1216 | ||
1217 | Signal_t | |
1218 | Perl_csighandler(int sig) | |
1219 | { | |
1018e26f NIS |
1220 | #ifdef PERL_GET_SIG_CONTEXT |
1221 | dTHXa(PERL_GET_SIG_CONTEXT); | |
1222 | #else | |
85b332e2 CL |
1223 | dTHX; |
1224 | #endif | |
23ada85b | 1225 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
5c1546dc | 1226 | (void) rsignal(sig, PL_csighandlerp); |
27da23d5 | 1227 | if (PL_sig_ignoring[sig]) return; |
85b332e2 | 1228 | #endif |
2e34cc90 | 1229 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1230 | if (PL_sig_defaulting[sig]) |
2e34cc90 CL |
1231 | #ifdef KILL_BY_SIGPRC |
1232 | exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG); | |
1233 | #else | |
1234 | exit(1); | |
1235 | #endif | |
1236 | #endif | |
4ffa73a3 JH |
1237 | if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) |
1238 | /* Call the perl level handler now-- | |
1239 | * with risk we may be in malloc() etc. */ | |
1240 | (*PL_sighandlerp)(sig); | |
1241 | else | |
dd374669 | 1242 | S_raise_signal(aTHX_ sig); |
0a8e0eff NIS |
1243 | } |
1244 | ||
2e34cc90 CL |
1245 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
1246 | void | |
1247 | Perl_csighandler_init(void) | |
1248 | { | |
1249 | int sig; | |
27da23d5 | 1250 | if (PL_sig_handlers_initted) return; |
2e34cc90 CL |
1251 | |
1252 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1253 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS | |
218fdd94 | 1254 | dTHX; |
27da23d5 | 1255 | PL_sig_defaulting[sig] = 1; |
5c1546dc | 1256 | (void) rsignal(sig, PL_csighandlerp); |
2e34cc90 CL |
1257 | #endif |
1258 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS | |
27da23d5 | 1259 | PL_sig_ignoring[sig] = 0; |
2e34cc90 CL |
1260 | #endif |
1261 | } | |
27da23d5 | 1262 | PL_sig_handlers_initted = 1; |
2e34cc90 CL |
1263 | } |
1264 | #endif | |
1265 | ||
0a8e0eff NIS |
1266 | void |
1267 | Perl_despatch_signals(pTHX) | |
1268 | { | |
1269 | int sig; | |
1270 | PL_sig_pending = 0; | |
1271 | for (sig = 1; sig < SIG_SIZE; sig++) { | |
1272 | if (PL_psig_pend[sig]) { | |
25da4428 JH |
1273 | PERL_BLOCKSIG_ADD(set, sig); |
1274 | PL_psig_pend[sig] = 0; | |
1275 | PERL_BLOCKSIG_BLOCK(set); | |
f5203343 | 1276 | (*PL_sighandlerp)(sig); |
25da4428 | 1277 | PERL_BLOCKSIG_UNBLOCK(set); |
0a8e0eff NIS |
1278 | } |
1279 | } | |
1280 | } | |
1281 | ||
85e6fe83 | 1282 | int |
864dbfa3 | 1283 | Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1284 | { |
27da23d5 | 1285 | dVAR; |
79072805 | 1286 | I32 i; |
b7953727 | 1287 | SV** svp = 0; |
2d4fcd5e AJ |
1288 | /* Need to be careful with SvREFCNT_dec(), because that can have side |
1289 | * effects (due to closures). We must make sure that the new disposition | |
1290 | * is in place before it is called. | |
1291 | */ | |
1292 | SV* to_dec = 0; | |
e72dc28c | 1293 | STRLEN len; |
2d4fcd5e AJ |
1294 | #ifdef HAS_SIGPROCMASK |
1295 | sigset_t set, save; | |
1296 | SV* save_sv; | |
1297 | #endif | |
a0d0e21e | 1298 | |
35a4481c | 1299 | register const char *s = MgPV(mg,len); |
748a9306 LW |
1300 | if (*s == '_') { |
1301 | if (strEQ(s,"__DIE__")) | |
3280af22 | 1302 | svp = &PL_diehook; |
748a9306 | 1303 | else if (strEQ(s,"__WARN__")) |
3280af22 | 1304 | svp = &PL_warnhook; |
748a9306 | 1305 | else |
cea2e8a9 | 1306 | Perl_croak(aTHX_ "No such hook: %s", s); |
748a9306 | 1307 | i = 0; |
4633a7c4 | 1308 | if (*svp) { |
2d4fcd5e | 1309 | to_dec = *svp; |
4633a7c4 LW |
1310 | *svp = 0; |
1311 | } | |
748a9306 LW |
1312 | } |
1313 | else { | |
1314 | i = whichsig(s); /* ...no, a brick */ | |
e02bfb16 | 1315 | if (i < 0) { |
e476b1b5 | 1316 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 1317 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s); |
748a9306 LW |
1318 | return 0; |
1319 | } | |
2d4fcd5e AJ |
1320 | #ifdef HAS_SIGPROCMASK |
1321 | /* Avoid having the signal arrive at a bad time, if possible. */ | |
1322 | sigemptyset(&set); | |
1323 | sigaddset(&set,i); | |
1324 | sigprocmask(SIG_BLOCK, &set, &save); | |
1325 | ENTER; | |
1326 | save_sv = newSVpv((char *)(&save), sizeof(sigset_t)); | |
1327 | SAVEFREESV(save_sv); | |
1328 | SAVEDESTRUCTOR_X(restore_sigmask, save_sv); | |
1329 | #endif | |
1330 | PERL_ASYNC_CHECK(); | |
2e34cc90 | 1331 | #if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS) |
27da23d5 | 1332 | if (!PL_sig_handlers_initted) Perl_csighandler_init(); |
2e34cc90 | 1333 | #endif |
23ada85b | 1334 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1335 | PL_sig_ignoring[i] = 0; |
85b332e2 | 1336 | #endif |
2e34cc90 | 1337 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
27da23d5 | 1338 | PL_sig_defaulting[i] = 0; |
2e34cc90 | 1339 | #endif |
22c35a8c | 1340 | SvREFCNT_dec(PL_psig_name[i]); |
2d4fcd5e | 1341 | to_dec = PL_psig_ptr[i]; |
22c35a8c | 1342 | PL_psig_ptr[i] = SvREFCNT_inc(sv); |
88e89b8a | 1343 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
e72dc28c | 1344 | PL_psig_name[i] = newSVpvn(s, len); |
22c35a8c | 1345 | SvREADONLY_on(PL_psig_name[i]); |
748a9306 | 1346 | } |
a0d0e21e | 1347 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
2d4fcd5e | 1348 | if (i) { |
5c1546dc | 1349 | (void)rsignal(i, PL_csighandlerp); |
2d4fcd5e AJ |
1350 | #ifdef HAS_SIGPROCMASK |
1351 | LEAVE; | |
1352 | #endif | |
1353 | } | |
748a9306 LW |
1354 | else |
1355 | *svp = SvREFCNT_inc(sv); | |
2d4fcd5e AJ |
1356 | if(to_dec) |
1357 | SvREFCNT_dec(to_dec); | |
a0d0e21e LW |
1358 | return 0; |
1359 | } | |
e72dc28c | 1360 | s = SvPV_force(sv,len); |
748a9306 | 1361 | if (strEQ(s,"IGNORE")) { |
85b332e2 | 1362 | if (i) { |
23ada85b | 1363 | #ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS |
27da23d5 | 1364 | PL_sig_ignoring[i] = 1; |
5c1546dc | 1365 | (void)rsignal(i, PL_csighandlerp); |
85b332e2 | 1366 | #else |
ff68c719 | 1367 | (void)rsignal(i, SIG_IGN); |
85b332e2 | 1368 | #endif |
2d4fcd5e | 1369 | } |
748a9306 LW |
1370 | } |
1371 | else if (strEQ(s,"DEFAULT") || !*s) { | |
1372 | if (i) | |
2e34cc90 CL |
1373 | #ifdef FAKE_DEFAULT_SIGNAL_HANDLERS |
1374 | { | |
27da23d5 | 1375 | PL_sig_defaulting[i] = 1; |
5c1546dc | 1376 | (void)rsignal(i, PL_csighandlerp); |
2e34cc90 CL |
1377 | } |
1378 | #else | |
ff68c719 | 1379 | (void)rsignal(i, SIG_DFL); |
2e34cc90 | 1380 | #endif |
748a9306 | 1381 | } |
79072805 | 1382 | else { |
5aabfad6 | 1383 | /* |
1384 | * We should warn if HINT_STRICT_REFS, but without | |
1385 | * access to a known hint bit in a known OP, we can't | |
1386 | * tell whether HINT_STRICT_REFS is in force or not. | |
1387 | */ | |
46fc3d4c | 1388 | if (!strchr(s,':') && !strchr(s,'\'')) |
e72dc28c | 1389 | sv_insert(sv, 0, 0, "main::", 6); |
748a9306 | 1390 | if (i) |
5c1546dc | 1391 | (void)rsignal(i, PL_csighandlerp); |
748a9306 LW |
1392 | else |
1393 | *svp = SvREFCNT_inc(sv); | |
79072805 | 1394 | } |
2d4fcd5e AJ |
1395 | #ifdef HAS_SIGPROCMASK |
1396 | if(i) | |
1397 | LEAVE; | |
1398 | #endif | |
1399 | if(to_dec) | |
1400 | SvREFCNT_dec(to_dec); | |
79072805 LW |
1401 | return 0; |
1402 | } | |
64ca3a65 | 1403 | #endif /* !PERL_MICRO */ |
79072805 LW |
1404 | |
1405 | int | |
864dbfa3 | 1406 | Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1407 | { |
dd374669 AL |
1408 | (void)sv; |
1409 | (void)mg; | |
3280af22 | 1410 | PL_sub_generation++; |
463ee0b2 LW |
1411 | return 0; |
1412 | } | |
1413 | ||
1414 | int | |
864dbfa3 | 1415 | Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1416 | { |
dd374669 AL |
1417 | (void)sv; |
1418 | (void)mg; | |
a0d0e21e | 1419 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
3280af22 | 1420 | PL_amagic_generation++; |
463ee0b2 | 1421 | |
a0d0e21e LW |
1422 | return 0; |
1423 | } | |
463ee0b2 | 1424 | |
946ec16e | 1425 | int |
864dbfa3 | 1426 | Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1427 | { |
dd374669 | 1428 | HV * const hv = (HV*)LvTARG(sv); |
6ff81951 | 1429 | I32 i = 0; |
dd374669 | 1430 | (void)mg; |
7719e241 | 1431 | |
6ff81951 | 1432 | if (hv) { |
497b47a8 JH |
1433 | (void) hv_iterinit(hv); |
1434 | if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) | |
1435 | i = HvKEYS(hv); | |
1436 | else { | |
1437 | while (hv_iternext(hv)) | |
1438 | i++; | |
1439 | } | |
6ff81951 GS |
1440 | } |
1441 | ||
1442 | sv_setiv(sv, (IV)i); | |
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | int | |
864dbfa3 | 1447 | Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg) |
946ec16e | 1448 | { |
dd374669 | 1449 | (void)mg; |
946ec16e | 1450 | if (LvTARG(sv)) { |
1451 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); | |
946ec16e | 1452 | } |
1453 | return 0; | |
ac27b0f5 | 1454 | } |
946ec16e | 1455 | |
e336de0d | 1456 | /* caller is responsible for stack switching/cleanup */ |
565764a8 | 1457 | STATIC int |
e1ec3a88 | 1458 | S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val) |
a0d0e21e LW |
1459 | { |
1460 | dSP; | |
463ee0b2 | 1461 | |
924508f0 GS |
1462 | PUSHMARK(SP); |
1463 | EXTEND(SP, n); | |
33c27489 | 1464 | PUSHs(SvTIED_obj(sv, mg)); |
ac27b0f5 | 1465 | if (n > 1) { |
93965878 | 1466 | if (mg->mg_ptr) { |
565764a8 | 1467 | if (mg->mg_len >= 0) |
79cb57f6 | 1468 | PUSHs(sv_2mortal(newSVpvn(mg->mg_ptr, mg->mg_len))); |
565764a8 | 1469 | else if (mg->mg_len == HEf_SVKEY) |
93965878 NIS |
1470 | PUSHs((SV*)mg->mg_ptr); |
1471 | } | |
14befaf4 | 1472 | else if (mg->mg_type == PERL_MAGIC_tiedelem) { |
565764a8 | 1473 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
93965878 NIS |
1474 | } |
1475 | } | |
1476 | if (n > 2) { | |
1477 | PUSHs(val); | |
88e89b8a | 1478 | } |
463ee0b2 LW |
1479 | PUTBACK; |
1480 | ||
864dbfa3 | 1481 | return call_method(meth, flags); |
946ec16e | 1482 | } |
1483 | ||
76e3520e | 1484 | STATIC int |
e1ec3a88 | 1485 | S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth) |
a0d0e21e | 1486 | { |
27da23d5 | 1487 | dVAR; dSP; |
463ee0b2 | 1488 | |
a0d0e21e LW |
1489 | ENTER; |
1490 | SAVETMPS; | |
e788e7d3 | 1491 | PUSHSTACKi(PERLSI_MAGIC); |
463ee0b2 | 1492 | |
33c27489 | 1493 | if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) { |
3280af22 | 1494 | sv_setsv(sv, *PL_stack_sp--); |
93965878 | 1495 | } |
463ee0b2 | 1496 | |
d3acc0f7 | 1497 | POPSTACK; |
a0d0e21e LW |
1498 | FREETMPS; |
1499 | LEAVE; | |
1500 | return 0; | |
1501 | } | |
463ee0b2 | 1502 | |
a0d0e21e | 1503 | int |
864dbfa3 | 1504 | Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e | 1505 | { |
a0d0e21e LW |
1506 | if (mg->mg_ptr) |
1507 | mg->mg_flags |= MGf_GSKIP; | |
58f82c5c | 1508 | magic_methpack(sv,mg,"FETCH"); |
463ee0b2 LW |
1509 | return 0; |
1510 | } | |
1511 | ||
1512 | int | |
864dbfa3 | 1513 | Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg) |
e336de0d | 1514 | { |
27da23d5 | 1515 | dVAR; dSP; |
a60c0954 | 1516 | ENTER; |
e788e7d3 | 1517 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1518 | magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv); |
d3acc0f7 | 1519 | POPSTACK; |
a60c0954 | 1520 | LEAVE; |
463ee0b2 LW |
1521 | return 0; |
1522 | } | |
1523 | ||
1524 | int | |
864dbfa3 | 1525 | Perl_magic_clearpack(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1526 | { |
a0d0e21e LW |
1527 | return magic_methpack(sv,mg,"DELETE"); |
1528 | } | |
463ee0b2 | 1529 | |
93965878 NIS |
1530 | |
1531 | U32 | |
864dbfa3 | 1532 | Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg) |
ac27b0f5 | 1533 | { |
27da23d5 | 1534 | dVAR; dSP; |
93965878 NIS |
1535 | U32 retval = 0; |
1536 | ||
1537 | ENTER; | |
1538 | SAVETMPS; | |
e788e7d3 | 1539 | PUSHSTACKi(PERLSI_MAGIC); |
33c27489 | 1540 | if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { |
3280af22 | 1541 | sv = *PL_stack_sp--; |
a60c0954 | 1542 | retval = (U32) SvIV(sv)-1; |
93965878 | 1543 | } |
d3acc0f7 | 1544 | POPSTACK; |
93965878 NIS |
1545 | FREETMPS; |
1546 | LEAVE; | |
1547 | return retval; | |
1548 | } | |
1549 | ||
cea2e8a9 GS |
1550 | int |
1551 | Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg) | |
a0d0e21e | 1552 | { |
27da23d5 | 1553 | dVAR; dSP; |
463ee0b2 | 1554 | |
e336de0d | 1555 | ENTER; |
e788e7d3 | 1556 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 | 1557 | PUSHMARK(SP); |
33c27489 | 1558 | XPUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 | 1559 | PUTBACK; |
864dbfa3 | 1560 | call_method("CLEAR", G_SCALAR|G_DISCARD); |
d3acc0f7 | 1561 | POPSTACK; |
a60c0954 | 1562 | LEAVE; |
a3bcc51e | 1563 | |
463ee0b2 LW |
1564 | return 0; |
1565 | } | |
1566 | ||
1567 | int | |
864dbfa3 | 1568 | Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key) |
463ee0b2 | 1569 | { |
27da23d5 | 1570 | dVAR; dSP; |
35a4481c | 1571 | const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
1572 | |
1573 | ENTER; | |
a0d0e21e | 1574 | SAVETMPS; |
e788e7d3 | 1575 | PUSHSTACKi(PERLSI_MAGIC); |
924508f0 GS |
1576 | PUSHMARK(SP); |
1577 | EXTEND(SP, 2); | |
33c27489 | 1578 | PUSHs(SvTIED_obj(sv, mg)); |
463ee0b2 LW |
1579 | if (SvOK(key)) |
1580 | PUSHs(key); | |
1581 | PUTBACK; | |
1582 | ||
864dbfa3 | 1583 | if (call_method(meth, G_SCALAR)) |
3280af22 | 1584 | sv_setsv(key, *PL_stack_sp--); |
463ee0b2 | 1585 | |
d3acc0f7 | 1586 | POPSTACK; |
a0d0e21e LW |
1587 | FREETMPS; |
1588 | LEAVE; | |
79072805 LW |
1589 | return 0; |
1590 | } | |
1591 | ||
1592 | int | |
864dbfa3 | 1593 | Perl_magic_existspack(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1594 | { |
1595 | return magic_methpack(sv,mg,"EXISTS"); | |
ac27b0f5 | 1596 | } |
a0d0e21e | 1597 | |
a3bcc51e TP |
1598 | SV * |
1599 | Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg) | |
1600 | { | |
27da23d5 | 1601 | dVAR; dSP; |
a3bcc51e TP |
1602 | SV *retval = &PL_sv_undef; |
1603 | SV *tied = SvTIED_obj((SV*)hv, mg); | |
1604 | HV *pkg = SvSTASH((SV*)SvRV(tied)); | |
1605 | ||
1606 | if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) { | |
1607 | SV *key; | |
1608 | if (HvEITER(hv)) | |
1609 | /* we are in an iteration so the hash cannot be empty */ | |
1610 | return &PL_sv_yes; | |
1611 | /* no xhv_eiter so now use FIRSTKEY */ | |
1612 | key = sv_newmortal(); | |
1613 | magic_nextpack((SV*)hv, mg, key); | |
1614 | HvEITER(hv) = NULL; /* need to reset iterator */ | |
1615 | return SvOK(key) ? &PL_sv_yes : &PL_sv_no; | |
1616 | } | |
1617 | ||
1618 | /* there is a SCALAR method that we can call */ | |
1619 | ENTER; | |
1620 | PUSHSTACKi(PERLSI_MAGIC); | |
1621 | PUSHMARK(SP); | |
1622 | EXTEND(SP, 1); | |
1623 | PUSHs(tied); | |
1624 | PUTBACK; | |
1625 | ||
1626 | if (call_method("SCALAR", G_SCALAR)) | |
1627 | retval = *PL_stack_sp--; | |
1628 | POPSTACK; | |
1629 | LEAVE; | |
1630 | return retval; | |
1631 | } | |
1632 | ||
a0d0e21e | 1633 | int |
864dbfa3 | 1634 | Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg) |
79072805 LW |
1635 | { |
1636 | OP *o; | |
1637 | I32 i; | |
1638 | GV* gv; | |
1639 | SV** svp; | |
2d8e6c8d | 1640 | STRLEN n_a; |
79072805 | 1641 | |
3280af22 | 1642 | gv = PL_DBline; |
79072805 | 1643 | i = SvTRUE(sv); |
188ea221 | 1644 | svp = av_fetch(GvAV(gv), |
2d8e6c8d | 1645 | atoi(MgPV(mg,n_a)), FALSE); |
5df8de69 DM |
1646 | if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp)))) { |
1647 | /* set or clear breakpoint in the relevant control op */ | |
1648 | if (i) | |
1649 | o->op_flags |= OPf_SPECIAL; | |
1650 | else | |
1651 | o->op_flags &= ~OPf_SPECIAL; | |
1652 | } | |
79072805 LW |
1653 | return 0; |
1654 | } | |
1655 | ||
1656 | int | |
864dbfa3 | 1657 | Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1658 | { |
3280af22 | 1659 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase); |
79072805 LW |
1660 | return 0; |
1661 | } | |
1662 | ||
1663 | int | |
864dbfa3 | 1664 | Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1665 | { |
3280af22 | 1666 | av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase); |
a0d0e21e LW |
1667 | return 0; |
1668 | } | |
1669 | ||
1670 | int | |
864dbfa3 | 1671 | Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1672 | { |
1673 | SV* lsv = LvTARG(sv); | |
ac27b0f5 | 1674 | |
a0d0e21e | 1675 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
14befaf4 | 1676 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
565764a8 | 1677 | if (mg && mg->mg_len >= 0) { |
a0ed51b3 | 1678 | I32 i = mg->mg_len; |
7e2040f0 | 1679 | if (DO_UTF8(lsv)) |
a0ed51b3 LW |
1680 | sv_pos_b2u(lsv, &i); |
1681 | sv_setiv(sv, i + PL_curcop->cop_arybase); | |
a0d0e21e LW |
1682 | return 0; |
1683 | } | |
1684 | } | |
0c34ef67 | 1685 | SvOK_off(sv); |
a0d0e21e LW |
1686 | return 0; |
1687 | } | |
1688 | ||
1689 | int | |
864dbfa3 | 1690 | Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg) |
a0d0e21e LW |
1691 | { |
1692 | SV* lsv = LvTARG(sv); | |
1693 | SSize_t pos; | |
1694 | STRLEN len; | |
c00206c8 | 1695 | STRLEN ulen = 0; |
a0d0e21e LW |
1696 | |
1697 | mg = 0; | |
ac27b0f5 | 1698 | |
a0d0e21e | 1699 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
14befaf4 | 1700 | mg = mg_find(lsv, PERL_MAGIC_regex_global); |
a0d0e21e LW |
1701 | if (!mg) { |
1702 | if (!SvOK(sv)) | |
1703 | return 0; | |
14befaf4 DM |
1704 | sv_magic(lsv, (SV*)0, PERL_MAGIC_regex_global, Nullch, 0); |
1705 | mg = mg_find(lsv, PERL_MAGIC_regex_global); | |
a0d0e21e LW |
1706 | } |
1707 | else if (!SvOK(sv)) { | |
565764a8 | 1708 | mg->mg_len = -1; |
a0d0e21e LW |
1709 | return 0; |
1710 | } | |
1711 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
1712 | ||
c485e607 | 1713 | pos = SvIV(sv) - PL_curcop->cop_arybase; |
a0ed51b3 | 1714 | |
7e2040f0 | 1715 | if (DO_UTF8(lsv)) { |
a0ed51b3 LW |
1716 | ulen = sv_len_utf8(lsv); |
1717 | if (ulen) | |
1718 | len = ulen; | |
a0ed51b3 LW |
1719 | } |
1720 | ||
a0d0e21e LW |
1721 | if (pos < 0) { |
1722 | pos += len; | |
1723 | if (pos < 0) | |
1724 | pos = 0; | |
1725 | } | |
eb160463 | 1726 | else if (pos > (SSize_t)len) |
a0d0e21e | 1727 | pos = len; |
a0ed51b3 LW |
1728 | |
1729 | if (ulen) { | |
1730 | I32 p = pos; | |
1731 | sv_pos_u2b(lsv, &p, 0); | |
1732 | pos = p; | |
1733 | } | |
727405f8 | 1734 | |
565764a8 | 1735 | mg->mg_len = pos; |
71be2cbc | 1736 | mg->mg_flags &= ~MGf_MINMATCH; |
a0d0e21e | 1737 | |
79072805 LW |
1738 | return 0; |
1739 | } | |
1740 | ||
1741 | int | |
864dbfa3 | 1742 | Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1743 | { |
dd374669 | 1744 | (void)mg; |
8646b087 | 1745 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1746 | SvFAKE_off(sv); | |
946ec16e | 1747 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 | 1748 | SvFAKE_on(sv); |
1749 | } | |
1750 | else | |
946ec16e | 1751 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 LW |
1752 | return 0; |
1753 | } | |
1754 | ||
1755 | int | |
864dbfa3 | 1756 | Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1757 | { |
79072805 | 1758 | GV* gv; |
dd374669 | 1759 | (void)mg; |
7a5fd60d | 1760 | |
79072805 LW |
1761 | if (!SvOK(sv)) |
1762 | return 0; | |
7a5fd60d | 1763 | gv = gv_fetchsv(sv,TRUE, SVt_PVGV); |
79072805 LW |
1764 | if (sv == (SV*)gv) |
1765 | return 0; | |
1766 | if (GvGP(sv)) | |
88e89b8a | 1767 | gp_free((GV*)sv); |
79072805 | 1768 | GvGP(sv) = gp_ref(GvGP(gv)); |
79072805 LW |
1769 | return 0; |
1770 | } | |
1771 | ||
1772 | int | |
864dbfa3 | 1773 | Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 GS |
1774 | { |
1775 | STRLEN len; | |
35a4481c AL |
1776 | SV * const lsv = LvTARG(sv); |
1777 | const char * const tmps = SvPV(lsv,len); | |
6ff81951 GS |
1778 | I32 offs = LvTARGOFF(sv); |
1779 | I32 rem = LvTARGLEN(sv); | |
dd374669 | 1780 | (void)mg; |
6ff81951 | 1781 | |
9aa983d2 JH |
1782 | if (SvUTF8(lsv)) |
1783 | sv_pos_u2b(lsv, &offs, &rem); | |
eb160463 | 1784 | if (offs > (I32)len) |
6ff81951 | 1785 | offs = len; |
eb160463 | 1786 | if (rem + offs > (I32)len) |
6ff81951 GS |
1787 | rem = len - offs; |
1788 | sv_setpvn(sv, tmps + offs, (STRLEN)rem); | |
9aa983d2 | 1789 | if (SvUTF8(lsv)) |
2ef4b674 | 1790 | SvUTF8_on(sv); |
6ff81951 GS |
1791 | return 0; |
1792 | } | |
1793 | ||
1794 | int | |
864dbfa3 | 1795 | Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1796 | { |
9aa983d2 JH |
1797 | STRLEN len; |
1798 | char *tmps = SvPV(sv, len); | |
dd374669 | 1799 | SV * const lsv = LvTARG(sv); |
9aa983d2 JH |
1800 | I32 lvoff = LvTARGOFF(sv); |
1801 | I32 lvlen = LvTARGLEN(sv); | |
dd374669 | 1802 | (void)mg; |
075a4a2b | 1803 | |
1aa99e6b | 1804 | if (DO_UTF8(sv)) { |
9aa983d2 JH |
1805 | sv_utf8_upgrade(lsv); |
1806 | sv_pos_u2b(lsv, &lvoff, &lvlen); | |
1807 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
b76f3ce2 | 1808 | LvTARGLEN(sv) = sv_len_utf8(sv); |
9aa983d2 JH |
1809 | SvUTF8_on(lsv); |
1810 | } | |
9bf12eaf | 1811 | else if (lsv && SvUTF8(lsv)) { |
9aa983d2 | 1812 | sv_pos_u2b(lsv, &lvoff, &lvlen); |
b76f3ce2 | 1813 | LvTARGLEN(sv) = len; |
e95af362 | 1814 | tmps = (char*)bytes_to_utf8((U8*)tmps, &len); |
9aa983d2 JH |
1815 | sv_insert(lsv, lvoff, lvlen, tmps, len); |
1816 | Safefree(tmps); | |
1aa99e6b | 1817 | } |
b76f3ce2 GB |
1818 | else { |
1819 | sv_insert(lsv, lvoff, lvlen, tmps, len); | |
1820 | LvTARGLEN(sv) = len; | |
1821 | } | |
1822 | ||
1aa99e6b | 1823 | |
79072805 LW |
1824 | return 0; |
1825 | } | |
1826 | ||
1827 | int | |
864dbfa3 | 1828 | Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1829 | { |
565764a8 | 1830 | TAINT_IF((mg->mg_len & 1) || |
155aba94 | 1831 | ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */ |
463ee0b2 LW |
1832 | return 0; |
1833 | } | |
1834 | ||
1835 | int | |
864dbfa3 | 1836 | Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg) |
463ee0b2 | 1837 | { |
dd374669 | 1838 | (void)sv; |
3280af22 NIS |
1839 | if (PL_localizing) { |
1840 | if (PL_localizing == 1) | |
565764a8 | 1841 | mg->mg_len <<= 1; |
748a9306 | 1842 | else |
565764a8 | 1843 | mg->mg_len >>= 1; |
a0d0e21e | 1844 | } |
3280af22 | 1845 | else if (PL_tainted) |
565764a8 | 1846 | mg->mg_len |= 1; |
748a9306 | 1847 | else |
565764a8 | 1848 | mg->mg_len &= ~1; |
463ee0b2 LW |
1849 | return 0; |
1850 | } | |
1851 | ||
1852 | int | |
864dbfa3 | 1853 | Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg) |
6ff81951 | 1854 | { |
35a4481c | 1855 | SV * const lsv = LvTARG(sv); |
dd374669 | 1856 | (void)mg; |
6ff81951 GS |
1857 | |
1858 | if (!lsv) { | |
0c34ef67 | 1859 | SvOK_off(sv); |
6ff81951 GS |
1860 | return 0; |
1861 | } | |
6ff81951 | 1862 | |
81e118e0 | 1863 | sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv))); |
6ff81951 GS |
1864 | return 0; |
1865 | } | |
1866 | ||
1867 | int | |
864dbfa3 | 1868 | Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1869 | { |
dd374669 | 1870 | (void)mg; |
79072805 LW |
1871 | do_vecset(sv); /* XXX slurp this routine */ |
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | int | |
864dbfa3 | 1876 | Perl_magic_getdefelem(pTHX_ SV *sv, MAGIC *mg) |
5f05dabc | 1877 | { |
71be2cbc | 1878 | SV *targ = Nullsv; |
5f05dabc | 1879 | if (LvTARGLEN(sv)) { |
68dc0745 | 1880 | if (mg->mg_obj) { |
74e13ce4 | 1881 | SV *ahv = LvTARG(sv); |
6d822dc4 MS |
1882 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0); |
1883 | if (he) | |
1884 | targ = HeVAL(he); | |
68dc0745 | 1885 | } |
1886 | else { | |
3c78fafa | 1887 | AV* av = (AV*)LvTARG(sv); |
68dc0745 | 1888 | if ((I32)LvTARGOFF(sv) <= AvFILL(av)) |
1889 | targ = AvARRAY(av)[LvTARGOFF(sv)]; | |
1890 | } | |
3280af22 | 1891 | if (targ && targ != &PL_sv_undef) { |
68dc0745 | 1892 | /* somebody else defined it for us */ |
1893 | SvREFCNT_dec(LvTARG(sv)); | |
1894 | LvTARG(sv) = SvREFCNT_inc(targ); | |
1895 | LvTARGLEN(sv) = 0; | |
1896 | SvREFCNT_dec(mg->mg_obj); | |
1897 | mg->mg_obj = Nullsv; | |
1898 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
1899 | } | |
5f05dabc | 1900 | } |
71be2cbc | 1901 | else |
1902 | targ = LvTARG(sv); | |
3280af22 | 1903 | sv_setsv(sv, targ ? targ : &PL_sv_undef); |
71be2cbc | 1904 | return 0; |
1905 | } | |
1906 | ||
1907 | int | |
864dbfa3 | 1908 | Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg) |
71be2cbc | 1909 | { |
dd374669 | 1910 | (void)mg; |
71be2cbc | 1911 | if (LvTARGLEN(sv)) |
68dc0745 | 1912 | vivify_defelem(sv); |
1913 | if (LvTARG(sv)) { | |
5f05dabc | 1914 | sv_setsv(LvTARG(sv), sv); |
68dc0745 | 1915 | SvSETMAGIC(LvTARG(sv)); |
1916 | } | |
5f05dabc | 1917 | return 0; |
1918 | } | |
1919 | ||
71be2cbc | 1920 | void |
864dbfa3 | 1921 | Perl_vivify_defelem(pTHX_ SV *sv) |
71be2cbc | 1922 | { |
74e13ce4 GS |
1923 | MAGIC *mg; |
1924 | SV *value = Nullsv; | |
71be2cbc | 1925 | |
14befaf4 | 1926 | if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem))) |
71be2cbc | 1927 | return; |
68dc0745 | 1928 | if (mg->mg_obj) { |
74e13ce4 | 1929 | SV *ahv = LvTARG(sv); |
2d8e6c8d | 1930 | STRLEN n_a; |
6d822dc4 MS |
1931 | HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0); |
1932 | if (he) | |
1933 | value = HeVAL(he); | |
3280af22 | 1934 | if (!value || value == &PL_sv_undef) |
cea2e8a9 | 1935 | Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a)); |
71be2cbc | 1936 | } |
68dc0745 | 1937 | else { |
1938 | AV* av = (AV*)LvTARG(sv); | |
5aabfad6 | 1939 | if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av)) |
68dc0745 | 1940 | LvTARG(sv) = Nullsv; /* array can't be extended */ |
1941 | else { | |
1942 | SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE); | |
3280af22 | 1943 | if (!svp || (value = *svp) == &PL_sv_undef) |
cea2e8a9 | 1944 | Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv)); |
68dc0745 | 1945 | } |
1946 | } | |
3e3baf6d | 1947 | (void)SvREFCNT_inc(value); |
68dc0745 | 1948 | SvREFCNT_dec(LvTARG(sv)); |
1949 | LvTARG(sv) = value; | |
71be2cbc | 1950 | LvTARGLEN(sv) = 0; |
68dc0745 | 1951 | SvREFCNT_dec(mg->mg_obj); |
1952 | mg->mg_obj = Nullsv; | |
1953 | mg->mg_flags &= ~MGf_REFCOUNTED; | |
5f05dabc | 1954 | } |
1955 | ||
1956 | int | |
864dbfa3 | 1957 | Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg) |
810b8aa5 GS |
1958 | { |
1959 | AV *av = (AV*)mg->mg_obj; | |
1960 | SV **svp = AvARRAY(av); | |
1961 | I32 i = AvFILLp(av); | |
dd374669 AL |
1962 | (void)sv; |
1963 | ||
810b8aa5 | 1964 | while (i >= 0) { |
fdc9a813 | 1965 | if (svp[i]) { |
810b8aa5 | 1966 | if (!SvWEAKREF(svp[i])) |
cea2e8a9 | 1967 | Perl_croak(aTHX_ "panic: magic_killbackrefs"); |
810b8aa5 | 1968 | /* XXX Should we check that it hasn't changed? */ |
b162af07 | 1969 | SvRV_set(svp[i], 0); |
0c34ef67 | 1970 | SvOK_off(svp[i]); |
810b8aa5 | 1971 | SvWEAKREF_off(svp[i]); |
fdc9a813 | 1972 | svp[i] = Nullsv; |
810b8aa5 GS |
1973 | } |
1974 | i--; | |
1975 | } | |
d99b02a1 | 1976 | SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */ |
810b8aa5 GS |
1977 | return 0; |
1978 | } | |
1979 | ||
1980 | int | |
864dbfa3 | 1981 | Perl_magic_setmglob(pTHX_ SV *sv, MAGIC *mg) |
93a17b20 | 1982 | { |
565764a8 | 1983 | mg->mg_len = -1; |
c6496cc7 | 1984 | SvSCREAM_off(sv); |
93a17b20 LW |
1985 | return 0; |
1986 | } | |
1987 | ||
1988 | int | |
864dbfa3 | 1989 | Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 1990 | { |
dd374669 | 1991 | (void)mg; |
14befaf4 | 1992 | sv_unmagic(sv, PERL_MAGIC_bm); |
79072805 LW |
1993 | SvVALID_off(sv); |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | int | |
864dbfa3 | 1998 | Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg) |
55497cff | 1999 | { |
dd374669 | 2000 | (void)mg; |
14befaf4 | 2001 | sv_unmagic(sv, PERL_MAGIC_fm); |
55497cff | 2002 | SvCOMPILED_off(sv); |
2003 | return 0; | |
2004 | } | |
2005 | ||
2006 | int | |
864dbfa3 | 2007 | Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2008 | { |
35a4481c | 2009 | const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr; |
79072805 LW |
2010 | |
2011 | if (uf && uf->uf_set) | |
24f81a43 | 2012 | (*uf->uf_set)(aTHX_ uf->uf_index, sv); |
79072805 LW |
2013 | return 0; |
2014 | } | |
2015 | ||
c277df42 | 2016 | int |
faf82a0b AE |
2017 | Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg) |
2018 | { | |
dd374669 | 2019 | (void)mg; |
faf82a0b AE |
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); | |
dd374669 | 2029 | (void)sv; |
c277df42 IZ |
2030 | return 0; |
2031 | } | |
2032 | ||
7a4c00b4 | 2033 | #ifdef USE_LOCALE_COLLATE |
79072805 | 2034 | int |
864dbfa3 | 2035 | Perl_magic_setcollxfrm(pTHX_ SV *sv, MAGIC *mg) |
bbce6d69 | 2036 | { |
2037 | /* | |
838b5b74 | 2038 | * RenE<eacute> Descartes said "I think not." |
bbce6d69 | 2039 | * and vanished with a faint plop. |
2040 | */ | |
dd374669 | 2041 | (void)sv; |
7a4c00b4 | 2042 | if (mg->mg_ptr) { |
2043 | Safefree(mg->mg_ptr); | |
2044 | mg->mg_ptr = NULL; | |
565764a8 | 2045 | mg->mg_len = -1; |
7a4c00b4 | 2046 | } |
bbce6d69 | 2047 | return 0; |
2048 | } | |
7a4c00b4 | 2049 | #endif /* USE_LOCALE_COLLATE */ |
bbce6d69 | 2050 | |
7e8c5dac HS |
2051 | /* Just clear the UTF-8 cache data. */ |
2052 | int | |
2053 | Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg) | |
2054 | { | |
dd374669 | 2055 | (void)sv; |
7e8c5dac HS |
2056 | Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */ |
2057 | mg->mg_ptr = 0; | |
2058 | mg->mg_len = -1; /* The mg_len holds the len cache. */ | |
2059 | return 0; | |
2060 | } | |
2061 | ||
bbce6d69 | 2062 | int |
864dbfa3 | 2063 | Perl_magic_set(pTHX_ SV *sv, MAGIC *mg) |
79072805 | 2064 | { |
e1ec3a88 | 2065 | register const char *s; |
79072805 | 2066 | I32 i; |
8990e307 | 2067 | STRLEN len; |
79072805 | 2068 | switch (*mg->mg_ptr) { |
748a9306 | 2069 | case '\001': /* ^A */ |
3280af22 | 2070 | sv_setsv(PL_bodytarget, sv); |
748a9306 | 2071 | break; |
49460fe6 | 2072 | case '\003': /* ^C */ |
eb160463 | 2073 | PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
49460fe6 NIS |
2074 | break; |
2075 | ||
79072805 | 2076 | case '\004': /* ^D */ |
b4ab917c DM |
2077 | #ifdef DEBUGGING |
2078 | s = SvPV_nolen(sv); | |
ddcf8bc1 | 2079 | PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG; |
79072805 | 2080 | DEBUG_x(dump_all()); |
b4ab917c DM |
2081 | #else |
2082 | PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG; | |
2083 | #endif | |
79072805 | 2084 | break; |
28f23441 | 2085 | case '\005': /* ^E */ |
d0063567 | 2086 | if (*(mg->mg_ptr+1) == '\0') { |
cd39f2b6 | 2087 | #ifdef MACOS_TRADITIONAL |
d0063567 | 2088 | gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
28f23441 | 2089 | #else |
cd39f2b6 | 2090 | # ifdef VMS |
d0063567 | 2091 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
048c1ddf | 2092 | # else |
cd39f2b6 | 2093 | # ifdef WIN32 |
d0063567 | 2094 | SetLastError( SvIV(sv) ); |
cd39f2b6 | 2095 | # else |
9fed8b87 | 2096 | # ifdef OS2 |
d0063567 | 2097 | os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
9fed8b87 | 2098 | # else |
d0063567 DK |
2099 | /* will anyone ever use this? */ |
2100 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4); | |
cd39f2b6 | 2101 | # endif |
048c1ddf IZ |
2102 | # endif |
2103 | # endif | |
22fae026 | 2104 | #endif |
d0063567 DK |
2105 | } |
2106 | else if (strEQ(mg->mg_ptr+1, "NCODING")) { | |
2107 | if (PL_encoding) | |
2108 | SvREFCNT_dec(PL_encoding); | |
2109 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2110 | PL_encoding = newSVsv(sv); | |
2111 | } | |
2112 | else { | |
2113 | PL_encoding = Nullsv; | |
2114 | } | |
2115 | } | |
2116 | break; | |
79072805 | 2117 | case '\006': /* ^F */ |
3280af22 | 2118 | PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 2119 | break; |
a0d0e21e | 2120 | case '\010': /* ^H */ |
3280af22 | 2121 | PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
a0d0e21e | 2122 | break; |
9d116dd7 | 2123 | case '\011': /* ^I */ /* NOT \t in EBCDIC */ |
3280af22 NIS |
2124 | if (PL_inplace) |
2125 | Safefree(PL_inplace); | |
79072805 | 2126 | if (SvOK(sv)) |
2e0de35c | 2127 | PL_inplace = savesvpv(sv); |
79072805 | 2128 | else |
3280af22 | 2129 | PL_inplace = Nullch; |
79072805 | 2130 | break; |
28f23441 | 2131 | case '\017': /* ^O */ |
ac27b0f5 | 2132 | if (*(mg->mg_ptr+1) == '\0') { |
1bf29663 | 2133 | if (PL_osname) { |
ac27b0f5 | 2134 | Safefree(PL_osname); |
1bf29663 DM |
2135 | PL_osname = Nullch; |
2136 | } | |
3511154c DM |
2137 | if (SvOK(sv)) { |
2138 | TAINT_PROPER("assigning to $^O"); | |
2e0de35c | 2139 | PL_osname = savesvpv(sv); |
3511154c | 2140 | } |
ac27b0f5 NIS |
2141 | } |
2142 | else if (strEQ(mg->mg_ptr, "\017PEN")) { | |
2143 | if (!PL_compiling.cop_io) | |
2144 | PL_compiling.cop_io = newSVsv(sv); | |
2145 | else | |
2146 | sv_setsv(PL_compiling.cop_io,sv); | |
2147 | } | |
28f23441 | 2148 | break; |
79072805 | 2149 | case '\020': /* ^P */ |
3280af22 | 2150 | PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
f2a7f298 | 2151 | if (PL_perldb && !PL_DBsingle) |
1ee4443e | 2152 | init_debugger(); |
79072805 LW |
2153 | break; |
2154 | case '\024': /* ^T */ | |
88e89b8a | 2155 | #ifdef BIG_TIME |
6b88bc9c | 2156 | PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
88e89b8a | 2157 | #else |
3280af22 | 2158 | PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 2159 | #endif |
79072805 | 2160 | break; |
fde18df1 | 2161 | case '\027': /* ^W & $^WARNING_BITS */ |
4438c4b7 JH |
2162 | if (*(mg->mg_ptr+1) == '\0') { |
2163 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { | |
2164 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
ac27b0f5 | 2165 | PL_dowarn = (PL_dowarn & ~G_WARN_ON) |
0453d815 | 2166 | | (i ? G_WARN_ON : G_WARN_OFF) ; |
4438c4b7 | 2167 | } |
599cee73 | 2168 | } |
0a378802 | 2169 | else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) { |
4438c4b7 | 2170 | if ( ! (PL_dowarn & G_WARN_ALL_MASK)) { |
d775746e GS |
2171 | if (!SvPOK(sv) && PL_localizing) { |
2172 | sv_setpvn(sv, WARN_NONEstring, WARNsize); | |
d3a7d8c7 | 2173 | PL_compiling.cop_warnings = pWARN_NONE; |
d775746e GS |
2174 | break; |
2175 | } | |
f4fc7782 | 2176 | { |
b5477537 | 2177 | STRLEN len, i; |
d3a7d8c7 | 2178 | int accumulate = 0 ; |
f4fc7782 | 2179 | int any_fatals = 0 ; |
35a4481c | 2180 | const char * const ptr = (char*)SvPV(sv, len) ; |
f4fc7782 JH |
2181 | for (i = 0 ; i < len ; ++i) { |
2182 | accumulate |= ptr[i] ; | |
2183 | any_fatals |= (ptr[i] & 0xAA) ; | |
2184 | } | |
d3a7d8c7 GS |
2185 | if (!accumulate) |
2186 | PL_compiling.cop_warnings = pWARN_NONE; | |
f4fc7782 JH |
2187 | else if (isWARN_on(sv, WARN_ALL) && !any_fatals) { |
2188 | PL_compiling.cop_warnings = pWARN_ALL; | |
2189 | PL_dowarn |= G_WARN_ONCE ; | |
727405f8 | 2190 | } |
d3a7d8c7 GS |
2191 | else { |
2192 | if (specialWARN(PL_compiling.cop_warnings)) | |
2193 | PL_compiling.cop_warnings = newSVsv(sv) ; | |
2194 | else | |
2195 | sv_setsv(PL_compiling.cop_warnings, sv); | |
2196 | if (isWARN_on(PL_compiling.cop_warnings, WARN_ONCE)) | |
2197 | PL_dowarn |= G_WARN_ONCE ; | |
2198 | } | |
f4fc7782 | 2199 | |
d3a7d8c7 | 2200 | } |
4438c4b7 | 2201 | } |
971a9dd3 | 2202 | } |
79072805 LW |
2203 | break; |
2204 | case '.': | |
3280af22 NIS |
2205 | if (PL_localizing) { |
2206 | if (PL_localizing == 1) | |
7766f137 | 2207 | SAVESPTR(PL_last_in_gv); |
748a9306 | 2208 | } |
3280af22 | 2209 | else if (SvOK(sv) && GvIO(PL_last_in_gv)) |
632db599 | 2210 | IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv); |
79072805 LW |
2211 | break; |
2212 | case '^': | |
3280af22 | 2213 | Safefree(IoTOP_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2214 | s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
7a5fd60d | 2215 | IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO); |
79072805 LW |
2216 | break; |
2217 | case '~': | |
3280af22 | 2218 | Safefree(IoFMT_NAME(GvIOp(PL_defoutgv))); |
e1ec3a88 | 2219 | s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv); |
7a5fd60d | 2220 | IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO); |
79072805 LW |
2221 | break; |
2222 | case '=': | |
632db599 | 2223 | IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2224 | break; |
2225 | case '-': | |
632db599 | 2226 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
3280af22 NIS |
2227 | if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L) |
2228 | IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L; | |
79072805 LW |
2229 | break; |
2230 | case '%': | |
632db599 | 2231 | IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
2232 | break; |
2233 | case '|': | |
4b65379b | 2234 | { |
3280af22 | 2235 | IO *io = GvIOp(PL_defoutgv); |
720f287d AB |
2236 | if(!io) |
2237 | break; | |
4b65379b CS |
2238 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0) |
2239 | IoFLAGS(io) &= ~IOf_FLUSH; | |
2240 | else { | |
2241 | if (!(IoFLAGS(io) & IOf_FLUSH)) { | |
2242 | PerlIO *ofp = IoOFP(io); | |
2243 | if (ofp) | |
2244 | (void)PerlIO_flush(ofp); | |
2245 | IoFLAGS(io) |= IOf_FLUSH; | |
2246 | } | |
2247 | } | |
79072805 LW |
2248 | } |
2249 | break; | |
79072805 | 2250 | case '/': |
3280af22 | 2251 | SvREFCNT_dec(PL_rs); |
8bfdd7d9 | 2252 | PL_rs = newSVsv(sv); |
79072805 LW |
2253 | break; |
2254 | case '\\': | |
7889fe52 NIS |
2255 | if (PL_ors_sv) |
2256 | SvREFCNT_dec(PL_ors_sv); | |
009c130f | 2257 | if (SvOK(sv) || SvGMAGICAL(sv)) { |
7889fe52 | 2258 | PL_ors_sv = newSVsv(sv); |
009c130f | 2259 | } |
e3c19b7b | 2260 | else { |
7889fe52 | 2261 | PL_ors_sv = Nullsv; |
e3c19b7b | 2262 | } |
79072805 LW |
2263 | break; |
2264 | case ',': | |
7889fe52 NIS |
2265 | if (PL_ofs_sv) |
2266 | SvREFCNT_dec(PL_ofs_sv); | |
2267 | if (SvOK(sv) || SvGMAGICAL(sv)) { | |
2268 | PL_ofs_sv = newSVsv(sv); | |
2269 | } | |
2270 | else { | |
2271 | PL_ofs_sv = Nullsv; | |
2272 | } | |
79072805 LW |
2273 | break; |
2274 | case '#': | |
3280af22 NIS |
2275 | if (PL_ofmt) |
2276 | Safefree(PL_ofmt); | |
2e0de35c | 2277 | PL_ofmt = savesvpv(sv); |
79072805 LW |
2278 | break; |
2279 | case '[': | |
3280af22 | 2280 | PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
2281 | break; |
2282 | case '?': | |
ff0cee69 | 2283 | #ifdef COMPLEX_STATUS |
6b88bc9c GS |
2284 | if (PL_localizing == 2) { |
2285 | PL_statusvalue = LvTARGOFF(sv); | |
2286 | PL_statusvalue_vms = LvTARGLEN(sv); | |
ff0cee69 | 2287 | } |
2288 | else | |
2289 | #endif | |
2290 | #ifdef VMSISH_STATUS | |
2291 | if (VMSISH_STATUS) | |
2292 | STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv))); | |
2293 | else | |
2294 | #endif | |
2295 | STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
79072805 LW |
2296 | break; |
2297 | case '!': | |
93189314 JH |
2298 | { |
2299 | #ifdef VMS | |
2300 | # define PERL_VMS_BANG vaxc$errno | |
2301 | #else | |
2302 | # define PERL_VMS_BANG 0 | |
2303 | #endif | |
91487cfc | 2304 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, |
93189314 JH |
2305 | (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG); |
2306 | } | |
79072805 LW |
2307 | break; |
2308 | case '<': | |
3280af22 NIS |
2309 | PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2310 | if (PL_delaymagic) { | |
2311 | PL_delaymagic |= DM_RUID; | |
79072805 LW |
2312 | break; /* don't do magic till later */ |
2313 | } | |
2314 | #ifdef HAS_SETRUID | |
b28d0864 | 2315 | (void)setruid((Uid_t)PL_uid); |
79072805 LW |
2316 | #else |
2317 | #ifdef HAS_SETREUID | |
3280af22 | 2318 | (void)setreuid((Uid_t)PL_uid, (Uid_t)-1); |
748a9306 | 2319 | #else |
85e6fe83 | 2320 | #ifdef HAS_SETRESUID |
b28d0864 | 2321 | (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1); |
79072805 | 2322 | #else |
75870ed3 | 2323 | if (PL_uid == PL_euid) { /* special case $< = $> */ |
2324 | #ifdef PERL_DARWIN | |
2325 | /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */ | |
2326 | if (PL_uid != 0 && PerlProc_getuid() == 0) | |
2327 | (void)PerlProc_setuid(0); | |
2328 | #endif | |
b28d0864 | 2329 | (void)PerlProc_setuid(PL_uid); |
75870ed3 | 2330 | } else { |
d8eceb89 | 2331 | PL_uid = PerlProc_getuid(); |
cea2e8a9 | 2332 | Perl_croak(aTHX_ "setruid() not implemented"); |
a0d0e21e | 2333 | } |
79072805 LW |
2334 | #endif |
2335 | #endif | |
85e6fe83 | 2336 | #endif |
d8eceb89 | 2337 | PL_uid = PerlProc_getuid(); |
3280af22 | 2338 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2339 | break; |
2340 | case '>': | |
3280af22 NIS |
2341 | PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2342 | if (PL_delaymagic) { | |
2343 | PL_delaymagic |= DM_EUID; | |
79072805 LW |
2344 | break; /* don't do magic till later */ |
2345 | } | |
2346 | #ifdef HAS_SETEUID | |
3280af22 | 2347 | (void)seteuid((Uid_t)PL_euid); |
79072805 LW |
2348 | #else |
2349 | #ifdef HAS_SETREUID | |
b28d0864 | 2350 | (void)setreuid((Uid_t)-1, (Uid_t)PL_euid); |
85e6fe83 LW |
2351 | #else |
2352 | #ifdef HAS_SETRESUID | |
6b88bc9c | 2353 | (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1); |
79072805 | 2354 | #else |
b28d0864 NIS |
2355 | if (PL_euid == PL_uid) /* special case $> = $< */ |
2356 | PerlProc_setuid(PL_euid); | |
a0d0e21e | 2357 | else { |
e8ee3774 | 2358 | PL_euid = PerlProc_geteuid(); |
cea2e8a9 | 2359 | Perl_croak(aTHX_ "seteuid() not implemented"); |
a0d0e21e | 2360 | } |
79072805 LW |
2361 | #endif |
2362 | #endif | |
85e6fe83 | 2363 | #endif |
d8eceb89 | 2364 | PL_euid = PerlProc_geteuid(); |
3280af22 | 2365 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2366 | break; |
2367 | case '(': | |
3280af22 NIS |
2368 | PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
2369 | if (PL_delaymagic) { | |
2370 | PL_delaymagic |= DM_RGID; | |
79072805 LW |
2371 | break; /* don't do magic till later */ |
2372 | } | |
2373 | #ifdef HAS_SETRGID | |
b28d0864 | 2374 | (void)setrgid((Gid_t)PL_gid); |
79072805 LW |
2375 | #else |
2376 | #ifdef HAS_SETREGID | |
3280af22 | 2377 | (void)setregid((Gid_t)PL_gid, (Gid_t)-1); |
85e6fe83 LW |
2378 | #else |
2379 | #ifdef HAS_SETRESGID | |
b28d0864 | 2380 | (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1); |
79072805 | 2381 | #else |
b28d0864 NIS |
2382 | if (PL_gid == PL_egid) /* special case $( = $) */ |
2383 | (void)PerlProc_setgid(PL_gid); | |
748a9306 | 2384 | else { |
d8eceb89 | 2385 | PL_gid = PerlProc_getgid(); |
cea2e8a9 | 2386 | Perl_croak(aTHX_ "setrgid() not implemented"); |
748a9306 | 2387 | } |
79072805 LW |
2388 | #endif |
2389 | #endif | |
85e6fe83 | 2390 | #endif |
d8eceb89 | 2391 | PL_gid = PerlProc_getgid(); |
3280af22 | 2392 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2393 | break; |
2394 | case ')': | |
5cd24f17 | 2395 | #ifdef HAS_SETGROUPS |
2396 | { | |
35a4481c | 2397 | const char *p = SvPV(sv, len); |
5cd24f17 | 2398 | Groups_t gary[NGROUPS]; |
2399 | ||
5cd24f17 | 2400 | while (isSPACE(*p)) |
2401 | ++p; | |
2d4389e4 | 2402 | PL_egid = Atol(p); |
5cd24f17 | 2403 | for (i = 0; i < NGROUPS; ++i) { |
2404 | while (*p && !isSPACE(*p)) | |
2405 | ++p; | |
2406 | while (isSPACE(*p)) | |
2407 | ++p; | |
2408 | if (!*p) | |
2409 | break; | |
2d4389e4 | 2410 | gary[i] = Atol(p); |
5cd24f17 | 2411 | } |
8cc95fdb | 2412 | if (i) |
2413 | (void)setgroups(i, gary); | |
5cd24f17 | 2414 | } |
2415 | #else /* HAS_SETGROUPS */ | |
b28d0864 | 2416 | PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
5cd24f17 | 2417 | #endif /* HAS_SETGROUPS */ |
3280af22 NIS |
2418 | if (PL_delaymagic) { |
2419 | PL_delaymagic |= DM_EGID; | |
79072805 LW |
2420 | break; /* don't do magic till later */ |
2421 | } | |
2422 | #ifdef HAS_SETEGID | |
3280af22 | 2423 | (void)setegid((Gid_t)PL_egid); |
79072805 LW |
2424 | #else |
2425 | #ifdef HAS_SETREGID | |
b28d0864 | 2426 | (void)setregid((Gid_t)-1, (Gid_t)PL_egid); |
85e6fe83 LW |
2427 | #else |
2428 | #ifdef HAS_SETRESGID | |
b28d0864 | 2429 | (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1); |
79072805 | 2430 | #else |
b28d0864 NIS |
2431 | if (PL_egid == PL_gid) /* special case $) = $( */ |
2432 | (void)PerlProc_setgid(PL_egid); | |
748a9306 | 2433 | else { |
d8eceb89 | 2434 | PL_egid = PerlProc_getegid(); |
cea2e8a9 | 2435 | Perl_croak(aTHX_ "setegid() not implemented"); |
748a9306 | 2436 | } |
79072805 LW |
2437 | #endif |
2438 | #endif | |
85e6fe83 | 2439 | #endif |
d8eceb89 | 2440 | PL_egid = PerlProc_getegid(); |
3280af22 | 2441 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
79072805 LW |
2442 | break; |
2443 | case ':': | |
2d8e6c8d | 2444 | PL_chopset = SvPV_force(sv,len); |
79072805 | 2445 | break; |
cd39f2b6 | 2446 | #ifndef MACOS_TRADITIONAL |
79072805 | 2447 | case '0': |
e2975953 | 2448 | LOCK_DOLLARZERO_MUTEX; |
4bc88a62 PS |
2449 | #ifdef HAS_SETPROCTITLE |
2450 | /* The BSDs don't show the argv[] in ps(1) output, they | |
2451 | * show a string from the process struct and provide | |
2452 | * the setproctitle() routine to manipulate that. */ | |
2453 | { | |
2454 | s = SvPV(sv, len); | |
98b76f99 | 2455 | # if __FreeBSD_version > 410001 |
9aad2c0e | 2456 | /* The leading "-" removes the "perl: " prefix, |
4bc88a62 PS |
2457 | * but not the "(perl) suffix from the ps(1) |
2458 | * output, because that's what ps(1) shows if the | |
2459 | * argv[] is modified. */ | |
6f2ad931 | 2460 | setproctitle("-%s", s); |
9aad2c0e | 2461 | # else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */ |
4bc88a62 PS |
2462 | /* This doesn't really work if you assume that |
2463 | * $0 = 'foobar'; will wipe out 'perl' from the $0 | |
2464 | * because in ps(1) output the result will be like | |
2465 | * sprintf("perl: %s (perl)", s) | |
2466 | * I guess this is a security feature: | |
2467 | * one (a user process) cannot get rid of the original name. | |
2468 | * --jhi */ | |
2469 | setproctitle("%s", s); | |
2470 | # endif | |
2471 | } | |
2472 | #endif | |
17aa7f3d JH |
2473 | #if defined(__hpux) && defined(PSTAT_SETCMD) |
2474 | { | |
2475 | union pstun un; | |
2476 | s = SvPV(sv, len); | |
6867be6d | 2477 | un.pst_command = (char *)s; |
17aa7f3d JH |
2478 | pstat(PSTAT_SETCMD, un, len, 0, 0); |
2479 | } | |
2480 | #endif | |
3cb9023d | 2481 | /* PL_origalen is set in perl_parse(). */ |
a0d0e21e | 2482 | s = SvPV_force(sv,len); |
6f698202 AMS |
2483 | if (len >= (STRLEN)PL_origalen-1) { |
2484 | /* Longer than original, will be truncated. We assume that | |
2485 | * PL_origalen bytes are available. */ | |
2486 | Copy(s, PL_origargv[0], PL_origalen-1, char); | |
79072805 LW |
2487 | } |
2488 | else { | |
54bfe034 JH |
2489 | /* Shorter than original, will be padded. */ |
2490 | Copy(s, PL_origargv[0], len, char); | |
2491 | PL_origargv[0][len] = 0; | |
2492 | memset(PL_origargv[0] + len + 1, | |
2493 | /* Is the space counterintuitive? Yes. | |
2494 | * (You were expecting \0?) | |
3cb9023d | 2495 | * Does it work? Seems to. (In Linux 2.4.20 at least.) |
54bfe034 JH |
2496 | * --jhi */ |
2497 | (int)' ', | |
2498 | PL_origalen - len - 1); | |
79072805 | 2499 | } |
ad7eccf4 JD |
2500 | PL_origargv[0][PL_origalen-1] = 0; |
2501 | for (i = 1; i < PL_origargc; i++) | |
2502 | PL_origargv[i] = 0; | |
e2975953 | 2503 | UNLOCK_DOLLARZERO_MUTEX; |
79072805 | 2504 | break; |
cd39f2b6 | 2505 | #endif |
79072805 LW |
2506 | } |
2507 | return 0; | |
2508 | } | |
2509 | ||
2510 | I32 | |
35a4481c | 2511 | Perl_whichsig(pTHX_ const char *sig) |
79072805 | 2512 | { |
aadb217d | 2513 | register char* const* sigv; |
79072805 | 2514 | |
aadb217d | 2515 | for (sigv = (char* const*)PL_sig_name; *sigv; sigv++) |
79072805 | 2516 | if (strEQ(sig,*sigv)) |
aadb217d | 2517 | return PL_sig_num[sigv - (char* const*)PL_sig_name]; |
79072805 LW |
2518 | #ifdef SIGCLD |
2519 | if (strEQ(sig,"CHLD")) | |
2520 | return SIGCLD; | |
2521 | #endif | |
2522 | #ifdef SIGCHLD | |
2523 | if (strEQ(sig,"CLD")) | |
2524 | return SIGCHLD; | |
2525 | #endif | |
7f1236c0 | 2526 | return -1; |
79072805 LW |
2527 | } |
2528 | ||
ecfc5424 | 2529 | Signal_t |
cea2e8a9 | 2530 | Perl_sighandler(int sig) |
79072805 | 2531 | { |
1018e26f NIS |
2532 | #ifdef PERL_GET_SIG_CONTEXT |
2533 | dTHXa(PERL_GET_SIG_CONTEXT); | |
71d280e3 | 2534 | #else |
cea2e8a9 | 2535 | dTHX; |
71d280e3 | 2536 | #endif |
79072805 | 2537 | dSP; |
00d579c5 | 2538 | GV *gv = Nullgv; |
a0d0e21e | 2539 | HV *st; |
b7953727 | 2540 | SV *sv = Nullsv, *tSv = PL_Sv; |
00d579c5 | 2541 | CV *cv = Nullcv; |
533c011a | 2542 | OP *myop = PL_op; |
84902520 | 2543 | U32 flags = 0; |
3280af22 | 2544 | XPV *tXpv = PL_Xpv; |
71d280e3 | 2545 | |
3280af22 | 2546 | if (PL_savestack_ix + 15 <= PL_savestack_max) |
84902520 | 2547 | flags |= 1; |
3280af22 | 2548 | if (PL_markstack_ptr < PL_markstack_max - 2) |
84902520 | 2549 | flags |= 4; |
3280af22 | 2550 | if (PL_scopestack_ix < PL_scopestack_max - 3) |
84902520 TB |
2551 | flags |= 16; |
2552 | ||
727405f8 | 2553 | if (!PL_psig_ptr[sig]) { |
99ef548b | 2554 | PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n", |
727405f8 NIS |
2555 | PL_sig_name[sig]); |
2556 | exit(sig); | |
2557 | } | |
ff0cee69 | 2558 | |
84902520 TB |
2559 | /* Max number of items pushed there is 3*n or 4. We cannot fix |
2560 | infinity, so we fix 4 (in fact 5): */ | |
2561 | if (flags & 1) { | |
3280af22 | 2562 | PL_savestack_ix += 5; /* Protect save in progress. */ |
c76ac1ee | 2563 | SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags); |
84902520 | 2564 | } |
ac27b0f5 | 2565 | if (flags & 4) |
3280af22 | 2566 | PL_markstack_ptr++; /* Protect mark. */ |
84902520 | 2567 | if (flags & 16) |
3280af22 | 2568 | PL_scopestack_ix += 1; |
84902520 | 2569 | /* sv_2cv is too complicated, try a simpler variant first: */ |
ac27b0f5 | 2570 | if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig])) |
84902520 | 2571 | || SvTYPE(cv) != SVt_PVCV) |
22c35a8c | 2572 | cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE); |
84902520 | 2573 | |
a0d0e21e | 2574 | if (!cv || !CvROOT(cv)) { |
599cee73 | 2575 | if (ckWARN(WARN_SIGNAL)) |
9014280d | 2576 | Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n", |
22c35a8c | 2577 | PL_sig_name[sig], (gv ? GvENAME(gv) |
00d579c5 GS |
2578 | : ((cv && CvGV(cv)) |
2579 | ? GvENAME(CvGV(cv)) | |
2580 | : "__ANON__"))); | |
2581 | goto cleanup; | |
79072805 LW |
2582 | } |
2583 | ||
22c35a8c GS |
2584 | if(PL_psig_name[sig]) { |
2585 | sv = SvREFCNT_inc(PL_psig_name[sig]); | |
84902520 | 2586 | flags |= 64; |
df3728a2 | 2587 | #if !defined(PERL_IMPLICIT_CONTEXT) |
27da23d5 | 2588 | PL_sig_sv = sv; |
df3728a2 | 2589 | #endif |
84902520 | 2590 | } else { |
ff0cee69 | 2591 | sv = sv_newmortal(); |
22c35a8c | 2592 | sv_setpv(sv,PL_sig_name[sig]); |
88e89b8a | 2593 | } |
e336de0d | 2594 | |
e788e7d3 | 2595 | PUSHSTACKi(PERLSI_SIGNAL); |
924508f0 | 2596 | PUSHMARK(SP); |
79072805 | 2597 | PUSHs(sv); |
79072805 | 2598 | PUTBACK; |
a0d0e21e | 2599 | |
1b266415 | 2600 | call_sv((SV*)cv, G_DISCARD|G_EVAL); |
79072805 | 2601 | |
d3acc0f7 | 2602 | POPSTACK; |
1b266415 | 2603 | if (SvTRUE(ERRSV)) { |
1d615522 | 2604 | #ifndef PERL_MICRO |
983dbef6 | 2605 | #ifdef HAS_SIGPROCMASK |
1b266415 NIS |
2606 | /* Handler "died", for example to get out of a restart-able read(). |
2607 | * Before we re-do that on its behalf re-enable the signal which was | |
2608 | * blocked by the system when we entered. | |
2609 | */ | |
2610 | sigset_t set; | |
2611 | sigemptyset(&set); | |
2612 | sigaddset(&set,sig); | |
2613 | sigprocmask(SIG_UNBLOCK, &set, NULL); | |
2614 | #else | |
2615 | /* Not clear if this will work */ | |
2616 | (void)rsignal(sig, SIG_IGN); | |
5c1546dc | 2617 | (void)rsignal(sig, PL_csighandlerp); |
1b266415 | 2618 | #endif |
1d615522 | 2619 | #endif /* !PERL_MICRO */ |
5df617be | 2620 | DieNull; |
1b266415 | 2621 | } |
00d579c5 | 2622 | cleanup: |
84902520 | 2623 | if (flags & 1) |
3280af22 | 2624 | PL_savestack_ix -= 8; /* Unprotect save in progress. */ |
ac27b0f5 | 2625 | if (flags & 4) |
3280af22 | 2626 | PL_markstack_ptr--; |
84902520 | 2627 | if (flags & 16) |
3280af22 | 2628 | PL_scopestack_ix -= 1; |
84902520 TB |
2629 | if (flags & 64) |
2630 | SvREFCNT_dec(sv); | |
533c011a | 2631 | PL_op = myop; /* Apparently not needed... */ |
ac27b0f5 | 2632 | |
3280af22 NIS |
2633 | PL_Sv = tSv; /* Restore global temporaries. */ |
2634 | PL_Xpv = tXpv; | |
53bb94e2 | 2635 | return; |
79072805 | 2636 | } |
4e35701f NIS |
2637 | |
2638 | ||
51371543 | 2639 | static void |
35a4481c | 2640 | restore_magic(pTHX_ const void *p) |
51371543 | 2641 | { |
48944bdf | 2642 | MGS* mgs = SSPTR(PTR2IV(p), MGS*); |
51371543 GS |
2643 | SV* sv = mgs->mgs_sv; |
2644 | ||
2645 | if (!sv) | |
2646 | return; | |
2647 | ||
2648 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) | |
2649 | { | |
f9701176 NC |
2650 | #ifdef PERL_COPY_ON_WRITE |
2651 | /* While magic was saved (and off) sv_setsv may well have seen | |
2652 | this SV as a prime candidate for COW. */ | |
2653 | if (SvIsCOW(sv)) | |
2654 | sv_force_normal(sv); | |
2655 | #endif | |
2656 | ||
51371543 GS |
2657 | if (mgs->mgs_flags) |
2658 | SvFLAGS(sv) |= mgs->mgs_flags; | |
2659 | else | |
2660 | mg_magical(sv); | |
2661 | if (SvGMAGICAL(sv)) | |
2662 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
2663 | } | |
2664 | ||
2665 | mgs->mgs_sv = NULL; /* mark the MGS structure as restored */ | |
2666 | ||
2667 | /* If we're still on top of the stack, pop us off. (That condition | |
2668 | * will be satisfied if restore_magic was called explicitly, but *not* | |
2669 | * if it's being called via leave_scope.) | |
2670 | * The reason for doing this is that otherwise, things like sv_2cv() | |
2671 | * may leave alloc gunk on the savestack, and some code | |
2672 | * (e.g. sighandler) doesn't expect that... | |
2673 | */ | |
2674 | if (PL_savestack_ix == mgs->mgs_ss_ix) | |
2675 | { | |
2676 | I32 popval = SSPOPINT; | |
c76ac1ee | 2677 | assert(popval == SAVEt_DESTRUCTOR_X); |
51371543 GS |
2678 | PL_savestack_ix -= 2; |
2679 | popval = SSPOPINT; | |
2680 | assert(popval == SAVEt_ALLOC); | |
2681 | popval = SSPOPINT; | |
2682 | PL_savestack_ix -= popval; | |
2683 | } | |
2684 | ||
2685 | } | |
2686 | ||
2687 | static void | |
35a4481c | 2688 | unwind_handler_stack(pTHX_ const void *p) |
51371543 | 2689 | { |
27da23d5 | 2690 | dVAR; |
e1ec3a88 | 2691 | const U32 flags = *(const U32*)p; |
51371543 GS |
2692 | |
2693 | if (flags & 1) | |
2694 | PL_savestack_ix -= 5; /* Unprotect save in progress. */ | |
2695 | /* cxstack_ix-- Not needed, die already unwound it. */ | |
df3728a2 | 2696 | #if !defined(PERL_IMPLICIT_CONTEXT) |
51371543 | 2697 | if (flags & 64) |
27da23d5 | 2698 | SvREFCNT_dec(PL_sig_sv); |
df3728a2 | 2699 | #endif |
51371543 | 2700 | } |
1018e26f NIS |
2701 | |
2702 |