Commit | Line | Data |
a0d0e21e |
1 | /* mg.c |
79072805 |
2 | * |
a0d0e21e |
3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
a0d0e21e |
8 | */ |
9 | |
10 | /* |
11 | * "Sam sat on the ground and put his head in his hands. 'I wish I had never |
12 | * come here, and I don't want to see no more magic,' he said, and fell silent." |
79072805 |
13 | */ |
14 | |
15 | #include "EXTERN.h" |
16 | #include "perl.h" |
17 | |
e6d9441c |
18 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
a0d0e21e |
19 | #ifdef I_UNISTD |
20 | # include <unistd.h> |
21 | #endif |
a0d0e21e |
22 | |
188ea221 |
23 | #ifdef HAS_GETGROUPS |
24 | # ifndef NGROUPS |
25 | # define NGROUPS 32 |
26 | # endif |
27 | #endif |
28 | |
bbce6d69 |
29 | #define TAINT_FROM_REGEX(sv,rx) \ |
30 | if ((rx)->exec_tainted) { \ |
31 | SvTAINTED_on(sv); \ |
32 | } else \ |
33 | SvTAINTED_off(sv); |
34 | |
c07a80fd |
35 | /* |
36 | * Use the "DESTRUCTOR" scope cleanup to reinstate magic. |
37 | */ |
38 | |
39 | struct magic_state { |
40 | SV* mgs_sv; |
41 | U32 mgs_flags; |
42 | }; |
43 | typedef struct magic_state MGS; |
44 | |
45 | static void restore_magic _((void *p)); |
46 | |
47 | static MGS * |
48 | save_magic(sv) |
49 | SV* sv; |
50 | { |
51 | MGS* mgs; |
52 | |
53 | assert(SvMAGICAL(sv)); |
54 | |
55 | mgs = (MGS*)safemalloc(sizeof(MGS)); |
56 | mgs->mgs_sv = sv; |
57 | mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); |
58 | SAVEDESTRUCTOR(restore_magic, mgs); |
59 | |
60 | SvMAGICAL_off(sv); |
61 | SvREADONLY_off(sv); |
62 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
63 | |
64 | return mgs; |
65 | } |
66 | |
67 | static void |
68 | restore_magic(p) |
69 | void* p; |
70 | { |
71 | MGS *mgs = (MGS*)p; |
72 | SV* sv = mgs->mgs_sv; |
73 | |
74 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) |
75 | { |
76 | if (mgs->mgs_flags) |
77 | SvFLAGS(sv) |= mgs->mgs_flags; |
78 | else |
79 | mg_magical(sv); |
80 | if (SvGMAGICAL(sv)) |
81 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); |
82 | } |
83 | |
e6d9441c |
84 | Safefree(mgs); |
c07a80fd |
85 | } |
86 | |
8e07c86e |
87 | |
8990e307 |
88 | void |
89 | mg_magical(sv) |
90 | SV* sv; |
91 | { |
92 | MAGIC* mg; |
93 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
94 | MGVTBL* vtbl = mg->mg_virtual; |
95 | if (vtbl) { |
a0d0e21e |
96 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 |
97 | SvGMAGICAL_on(sv); |
98 | if (vtbl->svt_set) |
99 | SvSMAGICAL_on(sv); |
100 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) |
101 | SvRMAGICAL_on(sv); |
102 | } |
103 | } |
104 | } |
105 | |
79072805 |
106 | int |
107 | mg_get(sv) |
108 | SV* sv; |
109 | { |
c07a80fd |
110 | MGS* mgs; |
79072805 |
111 | MAGIC* mg; |
c6496cc7 |
112 | MAGIC** mgp; |
760ac839 |
113 | int mgp_valid = 0; |
463ee0b2 |
114 | |
c07a80fd |
115 | ENTER; |
116 | mgs = save_magic(sv); |
463ee0b2 |
117 | |
c6496cc7 |
118 | mgp = &SvMAGIC(sv); |
119 | while ((mg = *mgp) != 0) { |
79072805 |
120 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
121 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
79072805 |
122 | (*vtbl->svt_get)(sv, mg); |
c6496cc7 |
123 | /* Ignore this magic if it's been deleted */ |
760ac839 |
124 | if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && (mg->mg_flags & MGf_GSKIP)) |
c07a80fd |
125 | mgs->mgs_flags = 0; |
a0d0e21e |
126 | } |
c6496cc7 |
127 | /* Advance to next magic (complicated by possible deletion) */ |
760ac839 |
128 | if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { |
c6496cc7 |
129 | mgp = &mg->mg_moremagic; |
760ac839 |
130 | mgp_valid = 1; |
131 | } |
132 | else |
133 | mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ |
79072805 |
134 | } |
463ee0b2 |
135 | |
c07a80fd |
136 | LEAVE; |
79072805 |
137 | return 0; |
138 | } |
139 | |
140 | int |
141 | mg_set(sv) |
142 | SV* sv; |
143 | { |
c07a80fd |
144 | MGS* mgs; |
79072805 |
145 | MAGIC* mg; |
463ee0b2 |
146 | MAGIC* nextmg; |
147 | |
c07a80fd |
148 | ENTER; |
149 | mgs = save_magic(sv); |
463ee0b2 |
150 | |
151 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { |
79072805 |
152 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 |
153 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e |
154 | if (mg->mg_flags & MGf_GSKIP) { |
155 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ |
c07a80fd |
156 | mgs->mgs_flags = 0; |
a0d0e21e |
157 | } |
79072805 |
158 | if (vtbl && vtbl->svt_set) |
159 | (*vtbl->svt_set)(sv, mg); |
160 | } |
463ee0b2 |
161 | |
c07a80fd |
162 | LEAVE; |
79072805 |
163 | return 0; |
164 | } |
165 | |
166 | U32 |
167 | mg_len(sv) |
168 | SV* sv; |
169 | { |
170 | MAGIC* mg; |
748a9306 |
171 | char *junk; |
463ee0b2 |
172 | STRLEN len; |
463ee0b2 |
173 | |
79072805 |
174 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
175 | MGVTBL* vtbl = mg->mg_virtual; |
85e6fe83 |
176 | if (vtbl && vtbl->svt_len) { |
c07a80fd |
177 | ENTER; |
178 | save_magic(sv); |
a0d0e21e |
179 | /* omit MGf_GSKIP -- not changed here */ |
85e6fe83 |
180 | len = (*vtbl->svt_len)(sv, mg); |
c07a80fd |
181 | LEAVE; |
85e6fe83 |
182 | return len; |
183 | } |
184 | } |
185 | |
748a9306 |
186 | junk = SvPV(sv, len); |
463ee0b2 |
187 | return len; |
79072805 |
188 | } |
189 | |
190 | int |
191 | mg_clear(sv) |
192 | SV* sv; |
193 | { |
194 | MAGIC* mg; |
463ee0b2 |
195 | |
c07a80fd |
196 | ENTER; |
197 | save_magic(sv); |
463ee0b2 |
198 | |
79072805 |
199 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
200 | MGVTBL* vtbl = mg->mg_virtual; |
a0d0e21e |
201 | /* omit GSKIP -- never set here */ |
202 | |
79072805 |
203 | if (vtbl && vtbl->svt_clear) |
204 | (*vtbl->svt_clear)(sv, mg); |
205 | } |
463ee0b2 |
206 | |
c07a80fd |
207 | LEAVE; |
79072805 |
208 | return 0; |
209 | } |
210 | |
93a17b20 |
211 | MAGIC* |
212 | mg_find(sv, type) |
213 | SV* sv; |
a0d0e21e |
214 | int type; |
93a17b20 |
215 | { |
216 | MAGIC* mg; |
93a17b20 |
217 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
218 | if (mg->mg_type == type) |
219 | return mg; |
220 | } |
221 | return 0; |
222 | } |
223 | |
79072805 |
224 | int |
463ee0b2 |
225 | mg_copy(sv, nsv, key, klen) |
79072805 |
226 | SV* sv; |
463ee0b2 |
227 | SV* nsv; |
228 | char *key; |
88e89b8a |
229 | I32 klen; |
79072805 |
230 | { |
463ee0b2 |
231 | int count = 0; |
79072805 |
232 | MAGIC* mg; |
463ee0b2 |
233 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
234 | if (isUPPER(mg->mg_type)) { |
a0d0e21e |
235 | sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); |
463ee0b2 |
236 | count++; |
79072805 |
237 | } |
79072805 |
238 | } |
463ee0b2 |
239 | return count; |
79072805 |
240 | } |
241 | |
242 | int |
463ee0b2 |
243 | mg_free(sv) |
79072805 |
244 | SV* sv; |
245 | { |
246 | MAGIC* mg; |
247 | MAGIC* moremagic; |
248 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { |
249 | MGVTBL* vtbl = mg->mg_virtual; |
250 | moremagic = mg->mg_moremagic; |
251 | if (vtbl && vtbl->svt_free) |
252 | (*vtbl->svt_free)(sv, mg); |
93a17b20 |
253 | if (mg->mg_ptr && mg->mg_type != 'g') |
88e89b8a |
254 | if (mg->mg_len >= 0) |
255 | Safefree(mg->mg_ptr); |
256 | else if (mg->mg_len == HEf_SVKEY) |
257 | SvREFCNT_dec((SV*)mg->mg_ptr); |
85e6fe83 |
258 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 |
259 | SvREFCNT_dec(mg->mg_obj); |
79072805 |
260 | Safefree(mg); |
261 | } |
262 | SvMAGIC(sv) = 0; |
263 | return 0; |
264 | } |
265 | |
266 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) |
267 | #include <signal.h> |
268 | #endif |
269 | |
93a17b20 |
270 | U32 |
271 | magic_len(sv, mg) |
272 | SV *sv; |
273 | MAGIC *mg; |
274 | { |
275 | register I32 paren; |
276 | register char *s; |
277 | register I32 i; |
bbce6d69 |
278 | register REGEXP *rx; |
748a9306 |
279 | char *t; |
93a17b20 |
280 | |
281 | switch (*mg->mg_ptr) { |
282 | case '1': case '2': case '3': case '4': |
283 | case '5': case '6': case '7': case '8': case '9': case '&': |
bbce6d69 |
284 | if (curpm && (rx = curpm->op_pmregexp)) { |
93a17b20 |
285 | paren = atoi(mg->mg_ptr); |
286 | getparen: |
bbce6d69 |
287 | if (paren <= rx->nparens && |
288 | (s = rx->startp[paren]) && |
289 | (t = rx->endp[paren])) |
290 | { |
748a9306 |
291 | i = t - s; |
bbce6d69 |
292 | if (i >= 0) { |
293 | TAINT_IF(rx->exec_tainted); |
93a17b20 |
294 | return i; |
bbce6d69 |
295 | } |
93a17b20 |
296 | } |
93a17b20 |
297 | } |
748a9306 |
298 | return 0; |
93a17b20 |
299 | break; |
300 | case '+': |
bbce6d69 |
301 | if (curpm && (rx = curpm->op_pmregexp)) { |
302 | paren = rx->lastparen; |
a0d0e21e |
303 | if (!paren) |
304 | return 0; |
93a17b20 |
305 | goto getparen; |
306 | } |
748a9306 |
307 | return 0; |
93a17b20 |
308 | break; |
309 | case '`': |
bbce6d69 |
310 | if (curpm && (rx = curpm->op_pmregexp)) { |
311 | if ((s = rx->subbeg)) { |
312 | i = rx->startp[0] - s; |
313 | if (i >= 0) { |
314 | TAINT_IF(rx->exec_tainted); |
93a17b20 |
315 | return i; |
bbce6d69 |
316 | } |
93a17b20 |
317 | } |
93a17b20 |
318 | } |
748a9306 |
319 | return 0; |
93a17b20 |
320 | case '\'': |
bbce6d69 |
321 | if (curpm && (rx = curpm->op_pmregexp)) { |
322 | if ((s = rx->endp[0])) { |
323 | TAINT_IF(rx->exec_tainted); |
324 | return (STRLEN) (rx->subend - s); |
93a17b20 |
325 | } |
93a17b20 |
326 | } |
748a9306 |
327 | return 0; |
93a17b20 |
328 | case ',': |
329 | return (STRLEN)ofslen; |
330 | case '\\': |
331 | return (STRLEN)orslen; |
332 | } |
333 | magic_get(sv,mg); |
334 | if (!SvPOK(sv) && SvNIOK(sv)) |
463ee0b2 |
335 | sv_2pv(sv, &na); |
93a17b20 |
336 | if (SvPOK(sv)) |
337 | return SvCUR(sv); |
338 | return 0; |
339 | } |
340 | |
79072805 |
341 | int |
342 | magic_get(sv, mg) |
343 | SV *sv; |
344 | MAGIC *mg; |
345 | { |
346 | register I32 paren; |
347 | register char *s; |
348 | register I32 i; |
bbce6d69 |
349 | register REGEXP *rx; |
748a9306 |
350 | char *t; |
79072805 |
351 | |
352 | switch (*mg->mg_ptr) { |
748a9306 |
353 | case '\001': /* ^A */ |
354 | sv_setsv(sv, bodytarget); |
355 | break; |
79072805 |
356 | case '\004': /* ^D */ |
188ea221 |
357 | sv_setiv(sv, (IV)(debug & 32767)); |
79072805 |
358 | break; |
28f23441 |
359 | case '\005': /* ^E */ |
360 | #ifdef VMS |
361 | { |
362 | # include <descrip.h> |
363 | # include <starlet.h> |
364 | char msg[255]; |
365 | $DESCRIPTOR(msgdsc,msg); |
946ec16e |
366 | sv_setnv(sv,(double) vaxc$errno); |
28f23441 |
367 | if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) |
368 | sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); |
369 | else |
370 | sv_setpv(sv,""); |
371 | } |
372 | #else |
88e89b8a |
373 | #ifdef OS2 |
946ec16e |
374 | sv_setnv(sv, (double)Perl_rc); |
88e89b8a |
375 | sv_setpv(sv, os2error(Perl_rc)); |
376 | #else |
946ec16e |
377 | sv_setnv(sv, (double)errno); |
28f23441 |
378 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
379 | #endif |
88e89b8a |
380 | #endif |
946ec16e |
381 | SvNOK_on(sv); /* what a wonderful hack! */ |
28f23441 |
382 | break; |
79072805 |
383 | case '\006': /* ^F */ |
188ea221 |
384 | sv_setiv(sv, (IV)maxsysfd); |
79072805 |
385 | break; |
a0d0e21e |
386 | case '\010': /* ^H */ |
188ea221 |
387 | sv_setiv(sv, (IV)hints); |
a0d0e21e |
388 | break; |
79072805 |
389 | case '\t': /* ^I */ |
390 | if (inplace) |
391 | sv_setpv(sv, inplace); |
392 | else |
188ea221 |
393 | sv_setsv(sv, &sv_undef); |
79072805 |
394 | break; |
28f23441 |
395 | case '\017': /* ^O */ |
188ea221 |
396 | sv_setpv(sv, osname); |
28f23441 |
397 | break; |
79072805 |
398 | case '\020': /* ^P */ |
188ea221 |
399 | sv_setiv(sv, (IV)perldb); |
79072805 |
400 | break; |
401 | case '\024': /* ^T */ |
88e89b8a |
402 | #ifdef BIG_TIME |
188ea221 |
403 | sv_setnv(sv, basetime); |
88e89b8a |
404 | #else |
188ea221 |
405 | sv_setiv(sv, (IV)basetime); |
88e89b8a |
406 | #endif |
79072805 |
407 | break; |
408 | case '\027': /* ^W */ |
188ea221 |
409 | sv_setiv(sv, (IV)dowarn); |
79072805 |
410 | break; |
411 | case '1': case '2': case '3': case '4': |
412 | case '5': case '6': case '7': case '8': case '9': case '&': |
bbce6d69 |
413 | if (curpm && (rx = curpm->op_pmregexp)) { |
88e89b8a |
414 | paren = atoi(GvENAME((GV*)mg->mg_obj)); |
79072805 |
415 | getparen: |
bbce6d69 |
416 | if (paren <= rx->nparens && |
417 | (s = rx->startp[paren]) && |
418 | (t = rx->endp[paren])) |
419 | { |
748a9306 |
420 | i = t - s; |
421 | if (i >= 0) { |
79072805 |
422 | sv_setpvn(sv,s,i); |
bbce6d69 |
423 | TAINT_FROM_REGEX(sv,rx); |
748a9306 |
424 | break; |
425 | } |
79072805 |
426 | } |
79072805 |
427 | } |
748a9306 |
428 | sv_setsv(sv,&sv_undef); |
79072805 |
429 | break; |
430 | case '+': |
bbce6d69 |
431 | if (curpm && (rx = curpm->op_pmregexp)) { |
432 | paren = rx->lastparen; |
a0d0e21e |
433 | if (paren) |
434 | goto getparen; |
79072805 |
435 | } |
748a9306 |
436 | sv_setsv(sv,&sv_undef); |
79072805 |
437 | break; |
438 | case '`': |
bbce6d69 |
439 | if (curpm && (rx = curpm->op_pmregexp)) { |
440 | if ((s = rx->subbeg)) { |
441 | i = rx->startp[0] - s; |
748a9306 |
442 | if (i >= 0) { |
79072805 |
443 | sv_setpvn(sv,s,i); |
bbce6d69 |
444 | TAINT_FROM_REGEX(sv,rx); |
748a9306 |
445 | break; |
446 | } |
79072805 |
447 | } |
79072805 |
448 | } |
748a9306 |
449 | sv_setsv(sv,&sv_undef); |
79072805 |
450 | break; |
451 | case '\'': |
bbce6d69 |
452 | if (curpm && (rx = curpm->op_pmregexp)) { |
453 | if ((s = rx->endp[0])) { |
454 | sv_setpvn(sv,s, rx->subend - s); |
455 | TAINT_FROM_REGEX(sv,rx); |
748a9306 |
456 | break; |
79072805 |
457 | } |
79072805 |
458 | } |
748a9306 |
459 | sv_setsv(sv,&sv_undef); |
79072805 |
460 | break; |
461 | case '.': |
462 | #ifndef lint |
a0d0e21e |
463 | if (GvIO(last_in_gv)) { |
188ea221 |
464 | sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv))); |
79072805 |
465 | } |
466 | #endif |
467 | break; |
468 | case '?': |
188ea221 |
469 | sv_setiv(sv, (IV)statusvalue); |
79072805 |
470 | break; |
471 | case '^': |
a0d0e21e |
472 | s = IoTOP_NAME(GvIOp(defoutgv)); |
79072805 |
473 | if (s) |
474 | sv_setpv(sv,s); |
475 | else { |
476 | sv_setpv(sv,GvENAME(defoutgv)); |
477 | sv_catpv(sv,"_TOP"); |
478 | } |
479 | break; |
480 | case '~': |
a0d0e21e |
481 | s = IoFMT_NAME(GvIOp(defoutgv)); |
79072805 |
482 | if (!s) |
483 | s = GvENAME(defoutgv); |
484 | sv_setpv(sv,s); |
485 | break; |
486 | #ifndef lint |
487 | case '=': |
188ea221 |
488 | sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv))); |
79072805 |
489 | break; |
490 | case '-': |
188ea221 |
491 | sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 |
492 | break; |
493 | case '%': |
188ea221 |
494 | sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv))); |
79072805 |
495 | break; |
496 | #endif |
497 | case ':': |
498 | break; |
499 | case '/': |
500 | break; |
501 | case '[': |
188ea221 |
502 | sv_setiv(sv, (IV)curcop->cop_arybase); |
79072805 |
503 | break; |
504 | case '|': |
188ea221 |
505 | sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 |
506 | break; |
507 | case ',': |
508 | sv_setpvn(sv,ofs,ofslen); |
509 | break; |
510 | case '\\': |
511 | sv_setpvn(sv,ors,orslen); |
512 | break; |
513 | case '#': |
514 | sv_setpv(sv,ofmt); |
515 | break; |
516 | case '!': |
a5f75d66 |
517 | #ifdef VMS |
946ec16e |
518 | sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno)); |
88e89b8a |
519 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
a5f75d66 |
520 | #else |
88e89b8a |
521 | { |
522 | int saveerrno = errno; |
946ec16e |
523 | sv_setnv(sv, (double)errno); |
88e89b8a |
524 | #ifdef OS2 |
525 | if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc)); |
526 | else |
a5f75d66 |
527 | #endif |
2304df62 |
528 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
88e89b8a |
529 | errno = saveerrno; |
530 | } |
531 | #endif |
946ec16e |
532 | SvNOK_on(sv); /* what a wonderful hack! */ |
79072805 |
533 | break; |
534 | case '<': |
188ea221 |
535 | sv_setiv(sv, (IV)uid); |
79072805 |
536 | break; |
537 | case '>': |
188ea221 |
538 | sv_setiv(sv, (IV)euid); |
79072805 |
539 | break; |
540 | case '(': |
188ea221 |
541 | sv_setiv(sv, (IV)gid); |
79072805 |
542 | s = buf; |
543 | (void)sprintf(s,"%d",(int)gid); |
544 | goto add_groups; |
545 | case ')': |
188ea221 |
546 | sv_setiv(sv, (IV)egid); |
79072805 |
547 | s = buf; |
548 | (void)sprintf(s,"%d",(int)egid); |
549 | add_groups: |
550 | while (*s) s++; |
551 | #ifdef HAS_GETGROUPS |
79072805 |
552 | { |
a0d0e21e |
553 | Groups_t gary[NGROUPS]; |
79072805 |
554 | |
555 | i = getgroups(NGROUPS,gary); |
556 | while (--i >= 0) { |
188ea221 |
557 | (void)sprintf(s," %d", (int)gary[i]); |
79072805 |
558 | while (*s) s++; |
559 | } |
560 | } |
561 | #endif |
562 | sv_setpv(sv,buf); |
29355cf7 |
563 | SvIOK_on(sv); /* what a wonderful hack! */ |
79072805 |
564 | break; |
565 | case '*': |
566 | break; |
567 | case '0': |
568 | break; |
569 | } |
a0d0e21e |
570 | return 0; |
79072805 |
571 | } |
572 | |
573 | int |
574 | magic_getuvar(sv, mg) |
575 | SV *sv; |
576 | MAGIC *mg; |
577 | { |
578 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
579 | |
580 | if (uf && uf->uf_val) |
581 | (*uf->uf_val)(uf->uf_index, sv); |
582 | return 0; |
583 | } |
584 | |
585 | int |
586 | magic_setenv(sv,mg) |
587 | SV* sv; |
588 | MAGIC* mg; |
589 | { |
590 | register char *s; |
88e89b8a |
591 | char *ptr; |
a0d0e21e |
592 | STRLEN len; |
593 | I32 i; |
594 | s = SvPV(sv,len); |
188ea221 |
595 | ptr = MgPV(mg); |
88e89b8a |
596 | my_setenv(ptr, s); |
a0d0e21e |
597 | #ifdef DYNAMIC_ENV_FETCH |
598 | /* We just undefd an environment var. Is a replacement */ |
599 | /* waiting in the wings? */ |
600 | if (!len) { |
88e89b8a |
601 | HE *envhe; |
188ea221 |
602 | SV *keysv; |
603 | if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr; |
604 | else keysv = newSVpv(mg->mg_ptr,mg->mg_len); |
605 | if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0)) |
88e89b8a |
606 | s = SvPV(HeVAL(envhe),len); |
188ea221 |
607 | if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv); |
a0d0e21e |
608 | } |
609 | #endif |
79072805 |
610 | /* And you'll never guess what the dog had */ |
611 | /* in its mouth... */ |
463ee0b2 |
612 | if (tainting) { |
88e89b8a |
613 | if (s && strEQ(ptr,"PATH")) { |
a0d0e21e |
614 | char *strend = s + len; |
463ee0b2 |
615 | |
616 | while (s < strend) { |
617 | s = cpytill(tokenbuf,s,strend,':',&i); |
618 | s++; |
619 | if (*tokenbuf != '/' |
a0d0e21e |
620 | || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
8990e307 |
621 | MgTAINTEDDIR_on(mg); |
463ee0b2 |
622 | } |
79072805 |
623 | } |
624 | } |
79072805 |
625 | return 0; |
626 | } |
627 | |
628 | int |
85e6fe83 |
629 | magic_clearenv(sv,mg) |
630 | SV* sv; |
631 | MAGIC* mg; |
632 | { |
188ea221 |
633 | my_setenv(MgPV(mg),Nullch); |
85e6fe83 |
634 | return 0; |
635 | } |
636 | |
3d37d572 |
637 | #ifdef HAS_SIGACTION |
638 | /* set up reliable signal() clone */ |
639 | |
640 | typedef void (*Sigfunc) _((int)); |
641 | |
642 | static |
643 | Sigfunc rsignal(signo,handler) |
644 | int signo; |
645 | Sigfunc handler; |
646 | { |
647 | struct sigaction act,oact; |
648 | |
649 | act.sa_handler = handler; |
650 | sigemptyset(&act.sa_mask); |
651 | act.sa_flags = 0; |
3d37d572 |
652 | #ifdef SA_RESTART |
88e89b8a |
653 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ |
3d37d572 |
654 | #endif |
3d37d572 |
655 | if (sigaction(signo, &act, &oact) < 0) |
656 | return(SIG_ERR); |
657 | else |
658 | return(oact.sa_handler); |
659 | } |
660 | |
661 | #else |
662 | |
663 | /* ah well, so much for reliability */ |
664 | |
665 | #define rsignal(x,y) signal(x,y) |
666 | |
667 | #endif |
668 | |
88e89b8a |
669 | static sig_trapped; |
670 | static |
671 | Signal_t |
672 | sig_trap(signo) |
673 | int signo; |
674 | { |
675 | sig_trapped++; |
676 | } |
677 | int |
678 | magic_getsig(sv,mg) |
679 | SV* sv; |
680 | MAGIC* mg; |
681 | { |
682 | I32 i; |
683 | /* Are we fetching a signal entry? */ |
188ea221 |
684 | i = whichsig(MgPV(mg)); |
88e89b8a |
685 | if (i) { |
686 | if(psig_ptr[i]) |
687 | sv_setsv(sv,psig_ptr[i]); |
688 | else { |
760ac839 |
689 | void (*origsig) _((int)); |
88e89b8a |
690 | /* get signal state without losing signals */ |
691 | sig_trapped=0; |
692 | origsig = rsignal(i,sig_trap); |
693 | rsignal(i,origsig); |
694 | if(sig_trapped) |
695 | kill(getpid(),i); |
696 | /* cache state so we don't fetch it again */ |
697 | if(origsig == SIG_IGN) |
698 | sv_setpv(sv,"IGNORE"); |
699 | else |
700 | sv_setsv(sv,&sv_undef); |
701 | psig_ptr[i] = SvREFCNT_inc(sv); |
702 | SvTEMP_off(sv); |
703 | } |
704 | } |
705 | return 0; |
706 | } |
707 | int |
708 | magic_clearsig(sv,mg) |
709 | SV* sv; |
710 | MAGIC* mg; |
711 | { |
712 | I32 i; |
713 | /* Are we clearing a signal entry? */ |
188ea221 |
714 | i = whichsig(MgPV(mg)); |
88e89b8a |
715 | if (i) { |
716 | if(psig_ptr[i]) { |
717 | SvREFCNT_dec(psig_ptr[i]); |
718 | psig_ptr[i]=0; |
719 | } |
720 | if(psig_name[i]) { |
721 | SvREFCNT_dec(psig_name[i]); |
722 | psig_name[i]=0; |
723 | } |
724 | } |
725 | return 0; |
726 | } |
3d37d572 |
727 | |
85e6fe83 |
728 | int |
79072805 |
729 | magic_setsig(sv,mg) |
730 | SV* sv; |
731 | MAGIC* mg; |
732 | { |
733 | register char *s; |
734 | I32 i; |
748a9306 |
735 | SV** svp; |
a0d0e21e |
736 | |
188ea221 |
737 | s = MgPV(mg); |
748a9306 |
738 | if (*s == '_') { |
739 | if (strEQ(s,"__DIE__")) |
740 | svp = &diehook; |
741 | else if (strEQ(s,"__WARN__")) |
742 | svp = &warnhook; |
743 | else if (strEQ(s,"__PARSE__")) |
744 | svp = &parsehook; |
745 | else |
746 | croak("No such hook: %s", s); |
747 | i = 0; |
4633a7c4 |
748 | if (*svp) { |
749 | SvREFCNT_dec(*svp); |
750 | *svp = 0; |
751 | } |
748a9306 |
752 | } |
753 | else { |
754 | i = whichsig(s); /* ...no, a brick */ |
755 | if (!i) { |
756 | if (dowarn || strEQ(s,"ALARM")) |
757 | warn("No such signal: SIG%s", s); |
758 | return 0; |
759 | } |
88e89b8a |
760 | if(psig_ptr[i]) |
761 | SvREFCNT_dec(psig_ptr[i]); |
762 | psig_ptr[i] = SvREFCNT_inc(sv); |
763 | if(psig_name[i]) |
764 | SvREFCNT_dec(psig_name[i]); |
8646b087 |
765 | psig_name[i] = newSVpv(s,strlen(s)); |
88e89b8a |
766 | SvTEMP_off(sv); /* Make sure it doesn't go away on us */ |
767 | SvREADONLY_on(psig_name[i]); |
748a9306 |
768 | } |
a0d0e21e |
769 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 |
770 | if (i) |
3d37d572 |
771 | (void)rsignal(i,sighandler); |
748a9306 |
772 | else |
773 | *svp = SvREFCNT_inc(sv); |
a0d0e21e |
774 | return 0; |
775 | } |
776 | s = SvPV_force(sv,na); |
748a9306 |
777 | if (strEQ(s,"IGNORE")) { |
778 | if (i) |
3d37d572 |
779 | (void)rsignal(i,SIG_IGN); |
748a9306 |
780 | else |
781 | *svp = 0; |
782 | } |
783 | else if (strEQ(s,"DEFAULT") || !*s) { |
784 | if (i) |
3d37d572 |
785 | (void)rsignal(i,SIG_DFL); |
748a9306 |
786 | else |
787 | *svp = 0; |
788 | } |
79072805 |
789 | else { |
760ac839 |
790 | if(hints & HINT_STRICT_REFS) |
791 | die(no_symref,s,"a subroutine"); |
2304df62 |
792 | if (!strchr(s,':') && !strchr(s,'\'')) { |
793 | sprintf(tokenbuf, "main::%s",s); |
79072805 |
794 | sv_setpv(sv,tokenbuf); |
795 | } |
748a9306 |
796 | if (i) |
3d37d572 |
797 | (void)rsignal(i,sighandler); |
748a9306 |
798 | else |
799 | *svp = SvREFCNT_inc(sv); |
79072805 |
800 | } |
801 | return 0; |
802 | } |
803 | |
804 | int |
463ee0b2 |
805 | magic_setisa(sv,mg) |
79072805 |
806 | SV* sv; |
807 | MAGIC* mg; |
808 | { |
463ee0b2 |
809 | sub_generation++; |
810 | return 0; |
811 | } |
812 | |
a0d0e21e |
813 | #ifdef OVERLOAD |
814 | |
463ee0b2 |
815 | int |
a0d0e21e |
816 | magic_setamagic(sv,mg) |
463ee0b2 |
817 | SV* sv; |
818 | MAGIC* mg; |
819 | { |
a0d0e21e |
820 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
821 | amagic_generation++; |
463ee0b2 |
822 | |
a0d0e21e |
823 | return 0; |
824 | } |
825 | #endif /* OVERLOAD */ |
463ee0b2 |
826 | |
946ec16e |
827 | int |
828 | magic_setnkeys(sv,mg) |
829 | SV* sv; |
830 | MAGIC* mg; |
831 | { |
832 | if (LvTARG(sv)) { |
833 | hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); |
834 | LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */ |
835 | } |
836 | return 0; |
837 | } |
838 | |
a0d0e21e |
839 | static int |
840 | magic_methpack(sv,mg,meth) |
841 | SV* sv; |
842 | MAGIC* mg; |
843 | char *meth; |
844 | { |
845 | dSP; |
463ee0b2 |
846 | |
a0d0e21e |
847 | ENTER; |
848 | SAVETMPS; |
849 | PUSHMARK(sp); |
850 | EXTEND(sp, 2); |
851 | PUSHs(mg->mg_obj); |
88e89b8a |
852 | if (mg->mg_ptr) { |
853 | if (mg->mg_len >= 0) |
854 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
855 | else if (mg->mg_len == HEf_SVKEY) |
856 | PUSHs((SV*)mg->mg_ptr); |
857 | } |
a0d0e21e |
858 | else if (mg->mg_type == 'p') |
859 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
463ee0b2 |
860 | PUTBACK; |
861 | |
a0d0e21e |
862 | if (perl_call_method(meth, G_SCALAR)) |
863 | sv_setsv(sv, *stack_sp--); |
463ee0b2 |
864 | |
a0d0e21e |
865 | FREETMPS; |
866 | LEAVE; |
867 | return 0; |
868 | } |
463ee0b2 |
869 | |
a0d0e21e |
870 | int |
871 | magic_getpack(sv,mg) |
872 | SV* sv; |
873 | MAGIC* mg; |
874 | { |
875 | magic_methpack(sv,mg,"FETCH"); |
876 | if (mg->mg_ptr) |
877 | mg->mg_flags |= MGf_GSKIP; |
463ee0b2 |
878 | return 0; |
879 | } |
880 | |
881 | int |
882 | magic_setpack(sv,mg) |
883 | SV* sv; |
884 | MAGIC* mg; |
885 | { |
463ee0b2 |
886 | dSP; |
463ee0b2 |
887 | |
a0d0e21e |
888 | PUSHMARK(sp); |
889 | EXTEND(sp, 3); |
890 | PUSHs(mg->mg_obj); |
88e89b8a |
891 | if (mg->mg_ptr) { |
892 | if (mg->mg_len >= 0) |
893 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
894 | else if (mg->mg_len == HEf_SVKEY) |
895 | PUSHs((SV*)mg->mg_ptr); |
896 | } |
a0d0e21e |
897 | else if (mg->mg_type == 'p') |
898 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); |
463ee0b2 |
899 | PUSHs(sv); |
900 | PUTBACK; |
901 | |
a0d0e21e |
902 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 |
903 | |
904 | return 0; |
905 | } |
906 | |
907 | int |
908 | magic_clearpack(sv,mg) |
909 | SV* sv; |
910 | MAGIC* mg; |
911 | { |
a0d0e21e |
912 | return magic_methpack(sv,mg,"DELETE"); |
913 | } |
463ee0b2 |
914 | |
a0d0e21e |
915 | int magic_wipepack(sv,mg) |
916 | SV* sv; |
917 | MAGIC* mg; |
918 | { |
919 | dSP; |
463ee0b2 |
920 | |
a0d0e21e |
921 | PUSHMARK(sp); |
922 | XPUSHs(mg->mg_obj); |
463ee0b2 |
923 | PUTBACK; |
463ee0b2 |
924 | |
a0d0e21e |
925 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 |
926 | |
927 | return 0; |
928 | } |
929 | |
930 | int |
931 | magic_nextpack(sv,mg,key) |
932 | SV* sv; |
933 | MAGIC* mg; |
934 | SV* key; |
935 | { |
463ee0b2 |
936 | dSP; |
a0d0e21e |
937 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 |
938 | |
939 | ENTER; |
a0d0e21e |
940 | SAVETMPS; |
941 | PUSHMARK(sp); |
942 | EXTEND(sp, 2); |
943 | PUSHs(mg->mg_obj); |
463ee0b2 |
944 | if (SvOK(key)) |
945 | PUSHs(key); |
946 | PUTBACK; |
947 | |
a0d0e21e |
948 | if (perl_call_method(meth, G_SCALAR)) |
949 | sv_setsv(key, *stack_sp--); |
463ee0b2 |
950 | |
a0d0e21e |
951 | FREETMPS; |
952 | LEAVE; |
79072805 |
953 | return 0; |
954 | } |
955 | |
956 | int |
a0d0e21e |
957 | magic_existspack(sv,mg) |
958 | SV* sv; |
959 | MAGIC* mg; |
960 | { |
961 | return magic_methpack(sv,mg,"EXISTS"); |
962 | } |
963 | |
964 | int |
79072805 |
965 | magic_setdbline(sv,mg) |
966 | SV* sv; |
967 | MAGIC* mg; |
968 | { |
969 | OP *o; |
970 | I32 i; |
971 | GV* gv; |
972 | SV** svp; |
973 | |
974 | gv = DBline; |
975 | i = SvTRUE(sv); |
188ea221 |
976 | svp = av_fetch(GvAV(gv), |
977 | atoi(MgPV(mg)), FALSE); |
8990e307 |
978 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 |
979 | o->op_private = i; |
79072805 |
980 | else |
981 | warn("Can't break at that line\n"); |
982 | return 0; |
983 | } |
984 | |
985 | int |
986 | magic_getarylen(sv,mg) |
987 | SV* sv; |
988 | MAGIC* mg; |
989 | { |
a0d0e21e |
990 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); |
79072805 |
991 | return 0; |
992 | } |
993 | |
994 | int |
995 | magic_setarylen(sv,mg) |
996 | SV* sv; |
997 | MAGIC* mg; |
998 | { |
a0d0e21e |
999 | av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase); |
1000 | return 0; |
1001 | } |
1002 | |
1003 | int |
1004 | magic_getpos(sv,mg) |
1005 | SV* sv; |
1006 | MAGIC* mg; |
1007 | { |
1008 | SV* lsv = LvTARG(sv); |
1009 | |
1010 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { |
1011 | mg = mg_find(lsv, 'g'); |
1012 | if (mg && mg->mg_len >= 0) { |
1013 | sv_setiv(sv, mg->mg_len + curcop->cop_arybase); |
1014 | return 0; |
1015 | } |
1016 | } |
1017 | (void)SvOK_off(sv); |
1018 | return 0; |
1019 | } |
1020 | |
1021 | int |
1022 | magic_setpos(sv,mg) |
1023 | SV* sv; |
1024 | MAGIC* mg; |
1025 | { |
1026 | SV* lsv = LvTARG(sv); |
1027 | SSize_t pos; |
1028 | STRLEN len; |
1029 | |
1030 | mg = 0; |
1031 | |
1032 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) |
1033 | mg = mg_find(lsv, 'g'); |
1034 | if (!mg) { |
1035 | if (!SvOK(sv)) |
1036 | return 0; |
1037 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); |
1038 | mg = mg_find(lsv, 'g'); |
1039 | } |
1040 | else if (!SvOK(sv)) { |
1041 | mg->mg_len = -1; |
1042 | return 0; |
1043 | } |
1044 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); |
1045 | |
1046 | pos = SvIV(sv) - curcop->cop_arybase; |
1047 | if (pos < 0) { |
1048 | pos += len; |
1049 | if (pos < 0) |
1050 | pos = 0; |
1051 | } |
1052 | else if (pos > len) |
1053 | pos = len; |
1054 | mg->mg_len = pos; |
1055 | |
79072805 |
1056 | return 0; |
1057 | } |
1058 | |
1059 | int |
1060 | magic_getglob(sv,mg) |
1061 | SV* sv; |
1062 | MAGIC* mg; |
1063 | { |
8646b087 |
1064 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1065 | SvFAKE_off(sv); |
946ec16e |
1066 | gv_efullname3(sv,((GV*)sv), "*"); |
8646b087 |
1067 | SvFAKE_on(sv); |
1068 | } |
1069 | else |
946ec16e |
1070 | gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */ |
79072805 |
1071 | return 0; |
1072 | } |
1073 | |
1074 | int |
1075 | magic_setglob(sv,mg) |
1076 | SV* sv; |
1077 | MAGIC* mg; |
1078 | { |
1079 | register char *s; |
1080 | GV* gv; |
1081 | |
1082 | if (!SvOK(sv)) |
1083 | return 0; |
463ee0b2 |
1084 | s = SvPV(sv, na); |
79072805 |
1085 | if (*s == '*' && s[1]) |
1086 | s++; |
85e6fe83 |
1087 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 |
1088 | if (sv == (SV*)gv) |
1089 | return 0; |
1090 | if (GvGP(sv)) |
88e89b8a |
1091 | gp_free((GV*)sv); |
79072805 |
1092 | GvGP(sv) = gp_ref(GvGP(gv)); |
1093 | if (!GvAV(gv)) |
1094 | gv_AVadd(gv); |
1095 | if (!GvHV(gv)) |
1096 | gv_HVadd(gv); |
a0d0e21e |
1097 | if (!GvIOp(gv)) |
1098 | GvIOp(gv) = newIO(); |
79072805 |
1099 | return 0; |
1100 | } |
1101 | |
1102 | int |
1103 | magic_setsubstr(sv,mg) |
1104 | SV* sv; |
1105 | MAGIC* mg; |
1106 | { |
8990e307 |
1107 | STRLEN len; |
1108 | char *tmps = SvPV(sv,len); |
1109 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); |
79072805 |
1110 | return 0; |
1111 | } |
1112 | |
1113 | int |
463ee0b2 |
1114 | magic_gettaint(sv,mg) |
1115 | SV* sv; |
1116 | MAGIC* mg; |
1117 | { |
bbce6d69 |
1118 | TAINT_IF((mg->mg_len & 1) || |
1119 | (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */ |
463ee0b2 |
1120 | return 0; |
1121 | } |
1122 | |
1123 | int |
1124 | magic_settaint(sv,mg) |
1125 | SV* sv; |
1126 | MAGIC* mg; |
1127 | { |
748a9306 |
1128 | if (localizing) { |
1129 | if (localizing == 1) |
1130 | mg->mg_len <<= 1; |
1131 | else |
1132 | mg->mg_len >>= 1; |
a0d0e21e |
1133 | } |
748a9306 |
1134 | else if (tainted) |
1135 | mg->mg_len |= 1; |
1136 | else |
1137 | mg->mg_len &= ~1; |
463ee0b2 |
1138 | return 0; |
1139 | } |
1140 | |
1141 | int |
79072805 |
1142 | magic_setvec(sv,mg) |
1143 | SV* sv; |
1144 | MAGIC* mg; |
1145 | { |
1146 | do_vecset(sv); /* XXX slurp this routine */ |
1147 | return 0; |
1148 | } |
1149 | |
1150 | int |
93a17b20 |
1151 | magic_setmglob(sv,mg) |
1152 | SV* sv; |
1153 | MAGIC* mg; |
1154 | { |
a0d0e21e |
1155 | mg->mg_len = -1; |
c6496cc7 |
1156 | SvSCREAM_off(sv); |
93a17b20 |
1157 | return 0; |
1158 | } |
1159 | |
1160 | int |
79072805 |
1161 | magic_setbm(sv,mg) |
1162 | SV* sv; |
1163 | MAGIC* mg; |
1164 | { |
463ee0b2 |
1165 | sv_unmagic(sv, 'B'); |
79072805 |
1166 | SvVALID_off(sv); |
1167 | return 0; |
1168 | } |
1169 | |
1170 | int |
55497cff |
1171 | magic_setfm(sv,mg) |
1172 | SV* sv; |
1173 | MAGIC* mg; |
1174 | { |
1175 | sv_unmagic(sv, 'f'); |
1176 | SvCOMPILED_off(sv); |
1177 | return 0; |
1178 | } |
1179 | |
1180 | int |
79072805 |
1181 | magic_setuvar(sv,mg) |
1182 | SV* sv; |
1183 | MAGIC* mg; |
1184 | { |
1185 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; |
1186 | |
1187 | if (uf && uf->uf_set) |
1188 | (*uf->uf_set)(uf->uf_index, sv); |
1189 | return 0; |
1190 | } |
1191 | |
1192 | int |
bbce6d69 |
1193 | magic_setcollxfrm(sv,mg) |
1194 | SV* sv; |
1195 | MAGIC* mg; |
1196 | { |
1197 | /* |
1198 | * René Descartes said "I think not." |
1199 | * and vanished with a faint plop. |
1200 | */ |
1201 | sv_unmagic(sv, 'o'); |
1202 | return 0; |
1203 | } |
1204 | |
1205 | int |
79072805 |
1206 | magic_set(sv,mg) |
1207 | SV* sv; |
1208 | MAGIC* mg; |
1209 | { |
1210 | register char *s; |
1211 | I32 i; |
8990e307 |
1212 | STRLEN len; |
79072805 |
1213 | switch (*mg->mg_ptr) { |
748a9306 |
1214 | case '\001': /* ^A */ |
1215 | sv_setsv(bodytarget, sv); |
1216 | break; |
79072805 |
1217 | case '\004': /* ^D */ |
8990e307 |
1218 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 |
1219 | DEBUG_x(dump_all()); |
1220 | break; |
28f23441 |
1221 | case '\005': /* ^E */ |
1222 | #ifdef VMS |
1223 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1224 | #else |
1225 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */ |
1226 | #endif |
1227 | break; |
79072805 |
1228 | case '\006': /* ^F */ |
463ee0b2 |
1229 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1230 | break; |
a0d0e21e |
1231 | case '\010': /* ^H */ |
1232 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
1233 | break; |
79072805 |
1234 | case '\t': /* ^I */ |
1235 | if (inplace) |
1236 | Safefree(inplace); |
1237 | if (SvOK(sv)) |
a0d0e21e |
1238 | inplace = savepv(SvPV(sv,na)); |
79072805 |
1239 | else |
1240 | inplace = Nullch; |
1241 | break; |
28f23441 |
1242 | case '\017': /* ^O */ |
1243 | if (osname) |
1244 | Safefree(osname); |
1245 | if (SvOK(sv)) |
1246 | osname = savepv(SvPV(sv,na)); |
1247 | else |
1248 | osname = Nullch; |
1249 | break; |
79072805 |
1250 | case '\020': /* ^P */ |
463ee0b2 |
1251 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1252 | if (i != perldb) { |
1253 | if (perldb) |
1254 | oldlastpm = curpm; |
1255 | else |
1256 | curpm = oldlastpm; |
1257 | } |
1258 | perldb = i; |
1259 | break; |
1260 | case '\024': /* ^T */ |
88e89b8a |
1261 | #ifdef BIG_TIME |
1262 | basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); |
1263 | #else |
85e6fe83 |
1264 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a |
1265 | #endif |
79072805 |
1266 | break; |
1267 | case '\027': /* ^W */ |
463ee0b2 |
1268 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1269 | break; |
1270 | case '.': |
748a9306 |
1271 | if (localizing) { |
1272 | if (localizing == 1) |
1273 | save_sptr((SV**)&last_in_gv); |
1274 | } |
88e89b8a |
1275 | else if (SvOK(sv) && GvIO(last_in_gv)) |
a0d0e21e |
1276 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 |
1277 | break; |
1278 | case '^': |
a0d0e21e |
1279 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1280 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); |
1281 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1282 | break; |
1283 | case '~': |
a0d0e21e |
1284 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1285 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); |
1286 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); |
79072805 |
1287 | break; |
1288 | case '=': |
a0d0e21e |
1289 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1290 | break; |
1291 | case '-': |
a0d0e21e |
1292 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1293 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) |
1294 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; |
79072805 |
1295 | break; |
1296 | case '%': |
a0d0e21e |
1297 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1298 | break; |
1299 | case '|': |
a0d0e21e |
1300 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 |
1301 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e |
1302 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 |
1303 | } |
1304 | break; |
1305 | case '*': |
463ee0b2 |
1306 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1307 | multiline = (i != 0); |
1308 | break; |
1309 | case '/': |
c07a80fd |
1310 | SvREFCNT_dec(nrs); |
1311 | nrs = newSVsv(sv); |
1312 | SvREFCNT_dec(rs); |
1313 | rs = SvREFCNT_inc(nrs); |
79072805 |
1314 | break; |
1315 | case '\\': |
1316 | if (ors) |
1317 | Safefree(ors); |
a0d0e21e |
1318 | ors = savepv(SvPV(sv,orslen)); |
79072805 |
1319 | break; |
1320 | case ',': |
1321 | if (ofs) |
1322 | Safefree(ofs); |
a0d0e21e |
1323 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 |
1324 | break; |
1325 | case '#': |
1326 | if (ofmt) |
1327 | Safefree(ofmt); |
a0d0e21e |
1328 | ofmt = savepv(SvPV(sv,na)); |
79072805 |
1329 | break; |
1330 | case '[': |
a0d0e21e |
1331 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1332 | break; |
1333 | case '?': |
748a9306 |
1334 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 |
1335 | break; |
1336 | case '!': |
28f23441 |
1337 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */ |
79072805 |
1338 | break; |
1339 | case '<': |
463ee0b2 |
1340 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1341 | if (delaymagic) { |
1342 | delaymagic |= DM_RUID; |
1343 | break; /* don't do magic till later */ |
1344 | } |
1345 | #ifdef HAS_SETRUID |
85e6fe83 |
1346 | (void)setruid((Uid_t)uid); |
79072805 |
1347 | #else |
1348 | #ifdef HAS_SETREUID |
85e6fe83 |
1349 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 |
1350 | #else |
85e6fe83 |
1351 | #ifdef HAS_SETRESUID |
1352 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); |
79072805 |
1353 | #else |
1354 | if (uid == euid) /* special case $< = $> */ |
1355 | (void)setuid(uid); |
a0d0e21e |
1356 | else { |
1357 | uid = (I32)getuid(); |
463ee0b2 |
1358 | croak("setruid() not implemented"); |
a0d0e21e |
1359 | } |
79072805 |
1360 | #endif |
1361 | #endif |
85e6fe83 |
1362 | #endif |
748a9306 |
1363 | uid = (I32)getuid(); |
4633a7c4 |
1364 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1365 | break; |
1366 | case '>': |
463ee0b2 |
1367 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1368 | if (delaymagic) { |
1369 | delaymagic |= DM_EUID; |
1370 | break; /* don't do magic till later */ |
1371 | } |
1372 | #ifdef HAS_SETEUID |
85e6fe83 |
1373 | (void)seteuid((Uid_t)euid); |
79072805 |
1374 | #else |
1375 | #ifdef HAS_SETREUID |
85e6fe83 |
1376 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1377 | #else |
1378 | #ifdef HAS_SETRESUID |
1379 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); |
79072805 |
1380 | #else |
1381 | if (euid == uid) /* special case $> = $< */ |
1382 | setuid(euid); |
a0d0e21e |
1383 | else { |
1384 | euid = (I32)geteuid(); |
463ee0b2 |
1385 | croak("seteuid() not implemented"); |
a0d0e21e |
1386 | } |
79072805 |
1387 | #endif |
1388 | #endif |
85e6fe83 |
1389 | #endif |
79072805 |
1390 | euid = (I32)geteuid(); |
4633a7c4 |
1391 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1392 | break; |
1393 | case '(': |
463ee0b2 |
1394 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1395 | if (delaymagic) { |
1396 | delaymagic |= DM_RGID; |
1397 | break; /* don't do magic till later */ |
1398 | } |
1399 | #ifdef HAS_SETRGID |
85e6fe83 |
1400 | (void)setrgid((Gid_t)gid); |
79072805 |
1401 | #else |
1402 | #ifdef HAS_SETREGID |
85e6fe83 |
1403 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1404 | #else |
1405 | #ifdef HAS_SETRESGID |
1406 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); |
79072805 |
1407 | #else |
1408 | if (gid == egid) /* special case $( = $) */ |
1409 | (void)setgid(gid); |
748a9306 |
1410 | else { |
1411 | gid = (I32)getgid(); |
463ee0b2 |
1412 | croak("setrgid() not implemented"); |
748a9306 |
1413 | } |
79072805 |
1414 | #endif |
1415 | #endif |
85e6fe83 |
1416 | #endif |
79072805 |
1417 | gid = (I32)getgid(); |
4633a7c4 |
1418 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1419 | break; |
1420 | case ')': |
463ee0b2 |
1421 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 |
1422 | if (delaymagic) { |
1423 | delaymagic |= DM_EGID; |
1424 | break; /* don't do magic till later */ |
1425 | } |
1426 | #ifdef HAS_SETEGID |
85e6fe83 |
1427 | (void)setegid((Gid_t)egid); |
79072805 |
1428 | #else |
1429 | #ifdef HAS_SETREGID |
85e6fe83 |
1430 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1431 | #else |
1432 | #ifdef HAS_SETRESGID |
1433 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); |
79072805 |
1434 | #else |
1435 | if (egid == gid) /* special case $) = $( */ |
1436 | (void)setgid(egid); |
748a9306 |
1437 | else { |
1438 | egid = (I32)getegid(); |
463ee0b2 |
1439 | croak("setegid() not implemented"); |
748a9306 |
1440 | } |
79072805 |
1441 | #endif |
1442 | #endif |
85e6fe83 |
1443 | #endif |
79072805 |
1444 | egid = (I32)getegid(); |
4633a7c4 |
1445 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 |
1446 | break; |
1447 | case ':': |
a0d0e21e |
1448 | chopset = SvPV_force(sv,na); |
79072805 |
1449 | break; |
1450 | case '0': |
1451 | if (!origalen) { |
1452 | s = origargv[0]; |
1453 | s += strlen(s); |
1454 | /* See if all the arguments are contiguous in memory */ |
1455 | for (i = 1; i < origargc; i++) { |
1456 | if (origargv[i] == s + 1) |
1457 | s += strlen(++s); /* this one is ok too */ |
1458 | } |
bbce6d69 |
1459 | /* can grab env area too? */ |
1460 | if (origenviron && origenviron[0] == s + 1) { |
79072805 |
1461 | my_setenv("NoNeSuCh", Nullch); |
1462 | /* force copy of environment */ |
1463 | for (i = 0; origenviron[i]; i++) |
1464 | if (origenviron[i] == s + 1) |
1465 | s += strlen(++s); |
1466 | } |
1467 | origalen = s - origargv[0]; |
1468 | } |
a0d0e21e |
1469 | s = SvPV_force(sv,len); |
8990e307 |
1470 | i = len; |
79072805 |
1471 | if (i >= origalen) { |
1472 | i = origalen; |
1473 | SvCUR_set(sv, i); |
1474 | *SvEND(sv) = '\0'; |
1475 | Copy(s, origargv[0], i, char); |
1476 | } |
1477 | else { |
1478 | Copy(s, origargv[0], i, char); |
1479 | s = origargv[0]+i; |
1480 | *s++ = '\0'; |
1481 | while (++i < origalen) |
8990e307 |
1482 | *s++ = ' '; |
1483 | s = origargv[0]+i; |
ed6116ce |
1484 | for (i = 1; i < origargc; i++) |
8990e307 |
1485 | origargv[i] = Nullch; |
79072805 |
1486 | } |
1487 | break; |
1488 | } |
1489 | return 0; |
1490 | } |
1491 | |
1492 | I32 |
1493 | whichsig(sig) |
1494 | char *sig; |
1495 | { |
1496 | register char **sigv; |
1497 | |
1498 | for (sigv = sig_name+1; *sigv; sigv++) |
1499 | if (strEQ(sig,*sigv)) |
8e07c86e |
1500 | return sig_num[sigv - sig_name]; |
79072805 |
1501 | #ifdef SIGCLD |
1502 | if (strEQ(sig,"CHLD")) |
1503 | return SIGCLD; |
1504 | #endif |
1505 | #ifdef SIGCHLD |
1506 | if (strEQ(sig,"CLD")) |
1507 | return SIGCHLD; |
1508 | #endif |
1509 | return 0; |
1510 | } |
1511 | |
ecfc5424 |
1512 | Signal_t |
79072805 |
1513 | sighandler(sig) |
a0d0e21e |
1514 | int sig; |
79072805 |
1515 | { |
1516 | dSP; |
1517 | GV *gv; |
a0d0e21e |
1518 | HV *st; |
79072805 |
1519 | SV *sv; |
1520 | CV *cv; |
79072805 |
1521 | AV *oldstack; |
760ac839 |
1522 | |
1523 | if(!psig_ptr[sig]) |
1524 | die("Signal SIG%s received, but no signal handler set.\n", |
1525 | sig_name[sig]); |
79072805 |
1526 | |
88e89b8a |
1527 | cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE); |
a0d0e21e |
1528 | if (!cv || !CvROOT(cv)) { |
79072805 |
1529 | if (dowarn) |
1530 | warn("SIG%s handler \"%s\" not defined.\n", |
88e89b8a |
1531 | sig_name[sig], GvENAME(gv) ); |
79072805 |
1532 | return; |
1533 | } |
1534 | |
88e89b8a |
1535 | oldstack = curstack; |
1536 | if (curstack != signalstack) |
a0d0e21e |
1537 | AvFILL(signalstack) = 0; |
88e89b8a |
1538 | SWITCHSTACK(curstack, signalstack); |
79072805 |
1539 | |
88e89b8a |
1540 | if(psig_name[sig]) |
1541 | sv = SvREFCNT_inc(psig_name[sig]); |
1542 | else { |
1543 | sv = sv_newmortal(); |
1544 | sv_setpv(sv,sig_name[sig]); |
1545 | } |
a0d0e21e |
1546 | PUSHMARK(sp); |
79072805 |
1547 | PUSHs(sv); |
79072805 |
1548 | PUTBACK; |
a0d0e21e |
1549 | |
1550 | perl_call_sv((SV*)cv, G_DISCARD); |
79072805 |
1551 | |
1552 | SWITCHSTACK(signalstack, oldstack); |
79072805 |
1553 | |
1554 | return; |
1555 | } |