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