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