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