Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* mg.c |
79072805 | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
125 | return 0; |
126 | } | |
127 | ||
128 | int | |
129 | mg_set(sv) | |
130 | SV* sv; | |
131 | { | |
c07a80fd | 132 | MGS* mgs; |
79072805 | 133 | MAGIC* mg; |
463ee0b2 LW |
134 | MAGIC* nextmg; |
135 | ||
c07a80fd | 136 | ENTER; |
137 | mgs = save_magic(sv); | |
463ee0b2 LW |
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 LW |
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 LW |
146 | if (vtbl && vtbl->svt_set) |
147 | (*vtbl->svt_set)(sv, mg); | |
148 | } | |
463ee0b2 | 149 | |
c07a80fd | 150 | LEAVE; |
79072805 LW |
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 LW |
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 LW |
170 | return len; |
171 | } | |
172 | } | |
173 | ||
748a9306 | 174 | junk = SvPV(sv, len); |
463ee0b2 | 175 | return len; |
79072805 LW |
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 LW |
187 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
188 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
189 | /* omit GSKIP -- never set here */ |
190 | ||
79072805 LW |
191 | if (vtbl && vtbl->svt_clear) |
192 | (*vtbl->svt_clear)(sv, mg); | |
193 | } | |
463ee0b2 | 194 | |
c07a80fd | 195 | LEAVE; |
79072805 LW |
196 | return 0; |
197 | } | |
198 | ||
93a17b20 LW |
199 | MAGIC* |
200 | mg_find(sv, type) | |
201 | SV* sv; | |
a0d0e21e | 202 | int type; |
93a17b20 LW |
203 | { |
204 | MAGIC* mg; | |
93a17b20 LW |
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 LW |
215 | SV* nsv; |
216 | char *key; | |
88e89b8a | 217 | I32 klen; |
79072805 | 218 | { |
463ee0b2 | 219 | int count = 0; |
79072805 | 220 | MAGIC* mg; |
463ee0b2 LW |
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 LW |
228 | } |
229 | ||
230 | int | |
463ee0b2 | 231 | mg_free(sv) |
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
276 | (s = curpm->op_pmregexp->startp[paren]) && |
277 | (t = curpm->op_pmregexp->endp[paren]) ) { | |
278 | i = t - s; | |
93a17b20 LW |
279 | if (i >= 0) |
280 | return i; | |
93a17b20 | 281 | } |
93a17b20 | 282 | } |
748a9306 | 283 | return 0; |
93a17b20 LW |
284 | break; |
285 | case '+': | |
286 | if (curpm) { | |
287 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
288 | if (!paren) |
289 | return 0; | |
93a17b20 LW |
290 | goto getparen; |
291 | } | |
748a9306 | 292 | return 0; |
93a17b20 LW |
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 LW |
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 LW |
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 LW |
320 | if (SvPOK(sv)) |
321 | return SvCUR(sv); | |
322 | return 0; | |
323 | } | |
324 | ||
79072805 LW |
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 LW |
334 | |
335 | switch (*mg->mg_ptr) { | |
748a9306 LW |
336 | case '\001': /* ^A */ |
337 | sv_setsv(sv, bodytarget); | |
338 | break; | |
79072805 LW |
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 LW |
366 | case '\006': /* ^F */ |
367 | sv_setiv(sv,(I32)maxsysfd); | |
368 | break; | |
a0d0e21e LW |
369 | case '\010': /* ^H */ |
370 | sv_setiv(sv,(I32)hints); | |
371 | break; | |
79072805 LW |
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 LW |
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 LW |
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 LW |
398 | getparen: |
399 | if (curpm->op_pmregexp && | |
400 | paren <= curpm->op_pmregexp->nparens && | |
a0d0e21e | 401 | (s = curpm->op_pmregexp->startp[paren]) && |
748a9306 LW |
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 LW |
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 LW |
414 | break; |
415 | case '+': | |
416 | if (curpm) { | |
417 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
418 | if (paren) |
419 | goto getparen; | |
79072805 | 420 | } |
748a9306 | 421 | sv_setsv(sv,&sv_undef); |
79072805 LW |
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 LW |
430 | break; |
431 | } | |
79072805 | 432 | } |
79072805 | 433 | } |
748a9306 | 434 | sv_setsv(sv,&sv_undef); |
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
474 | break; |
475 | case '-': | |
a0d0e21e | 476 | sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 LW |
477 | break; |
478 | case '%': | |
a0d0e21e | 479 | sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv))); |
79072805 LW |
480 | break; |
481 | #endif | |
482 | case ':': | |
483 | break; | |
484 | case '/': | |
485 | break; | |
486 | case '[': | |
a0d0e21e | 487 | sv_setiv(sv,(I32)curcop->cop_arybase); |
79072805 LW |
488 | break; |
489 | case '|': | |
a0d0e21e | 490 | sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
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 AD |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
589 | } |
590 | #endif | |
79072805 LW |
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 LW |
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 LW |
604 | } |
605 | } | |
79072805 LW |
606 | return 0; |
607 | } | |
608 | ||
609 | int | |
85e6fe83 LW |
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 LW |
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? */ | |
8646b087 | 666 | i = whichsig((mg->mg_len == HEf_SVKEY) ? SvPV((SV*)mg->mg_ptr, na) : mg->mg_ptr); |
88e89b8a | 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? */ | |
8646b087 | 696 | i = whichsig((mg->mg_len == HEf_SVKEY) ? SvPV((SV*)mg->mg_ptr, na) : mg->mg_ptr); |
88e89b8a | 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 LW |
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 LW |
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 LW |
730 | if (*svp) { |
731 | SvREFCNT_dec(*svp); | |
732 | *svp = 0; | |
733 | } | |
748a9306 LW |
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]); | |
8646b087 | 747 | psig_name[i] = newSVpv(s,strlen(s)); |
88e89b8a | 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 LW |
754 | else |
755 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
756 | return 0; |
757 | } | |
758 | s = SvPV_force(sv,na); | |
748a9306 LW |
759 | if (strEQ(s,"IGNORE")) { |
760 | if (i) | |
3d37d572 | 761 | (void)rsignal(i,SIG_IGN); |
748a9306 LW |
762 | else |
763 | *svp = 0; | |
764 | } | |
765 | else if (strEQ(s,"DEFAULT") || !*s) { | |
766 | if (i) | |
3d37d572 | 767 | (void)rsignal(i,SIG_DFL); |
748a9306 LW |
768 | else |
769 | *svp = 0; | |
770 | } | |
79072805 | 771 | else { |
760ac839 LW |
772 | if(hints & HINT_STRICT_REFS) |
773 | die(no_symref,s,"a subroutine"); | |
2304df62 AD |
774 | if (!strchr(s,':') && !strchr(s,'\'')) { |
775 | sprintf(tokenbuf, "main::%s",s); | |
79072805 LW |
776 | sv_setpv(sv,tokenbuf); |
777 | } | |
748a9306 | 778 | if (i) |
3d37d572 | 779 | (void)rsignal(i,sighandler); |
748a9306 LW |
780 | else |
781 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
782 | } |
783 | return 0; | |
784 | } | |
785 | ||
786 | int | |
463ee0b2 | 787 | magic_setisa(sv,mg) |
79072805 LW |
788 | SV* sv; |
789 | MAGIC* mg; | |
790 | { | |
463ee0b2 LW |
791 | sub_generation++; |
792 | return 0; | |
793 | } | |
794 | ||
a0d0e21e LW |
795 | #ifdef OVERLOAD |
796 | ||
463ee0b2 | 797 | int |
a0d0e21e | 798 | magic_setamagic(sv,mg) |
463ee0b2 LW |
799 | SV* sv; |
800 | MAGIC* mg; | |
801 | { | |
a0d0e21e LW |
802 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
803 | amagic_generation++; | |
463ee0b2 | 804 | |
a0d0e21e LW |
805 | return 0; |
806 | } | |
807 | #endif /* OVERLOAD */ | |
463ee0b2 | 808 | |
a0d0e21e LW |
809 | static int |
810 | magic_methpack(sv,mg,meth) | |
811 | SV* sv; | |
812 | MAGIC* mg; | |
813 | char *meth; | |
814 | { | |
815 | dSP; | |
463ee0b2 | 816 | |
a0d0e21e LW |
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 LW |
828 | else if (mg->mg_type == 'p') |
829 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
830 | PUTBACK; |
831 | ||
a0d0e21e LW |
832 | if (perl_call_method(meth, G_SCALAR)) |
833 | sv_setsv(sv, *stack_sp--); | |
463ee0b2 | 834 | |
a0d0e21e LW |
835 | FREETMPS; |
836 | LEAVE; | |
837 | return 0; | |
838 | } | |
463ee0b2 | 839 | |
a0d0e21e LW |
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 LW |
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 LW |
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 LW |
867 | else if (mg->mg_type == 'p') |
868 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
869 | PUSHs(sv); |
870 | PUTBACK; | |
871 | ||
a0d0e21e | 872 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
873 | |
874 | return 0; | |
875 | } | |
876 | ||
877 | int | |
878 | magic_clearpack(sv,mg) | |
879 | SV* sv; | |
880 | MAGIC* mg; | |
881 | { | |
a0d0e21e LW |
882 | return magic_methpack(sv,mg,"DELETE"); |
883 | } | |
463ee0b2 | 884 | |
a0d0e21e LW |
885 | int magic_wipepack(sv,mg) |
886 | SV* sv; | |
887 | MAGIC* mg; | |
888 | { | |
889 | dSP; | |
463ee0b2 | 890 | |
a0d0e21e LW |
891 | PUSHMARK(sp); |
892 | XPUSHs(mg->mg_obj); | |
463ee0b2 | 893 | PUTBACK; |
463ee0b2 | 894 | |
a0d0e21e | 895 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
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 LW |
908 | |
909 | ENTER; | |
a0d0e21e LW |
910 | SAVETMPS; |
911 | PUSHMARK(sp); | |
912 | EXTEND(sp, 2); | |
913 | PUSHs(mg->mg_obj); | |
463ee0b2 LW |
914 | if (SvOK(key)) |
915 | PUSHs(key); | |
916 | PUTBACK; | |
917 | ||
a0d0e21e LW |
918 | if (perl_call_method(meth, G_SCALAR)) |
919 | sv_setsv(key, *stack_sp--); | |
463ee0b2 | 920 | |
a0d0e21e LW |
921 | FREETMPS; |
922 | LEAVE; | |
79072805 LW |
923 | return 0; |
924 | } | |
925 | ||
926 | int | |
a0d0e21e LW |
927 | magic_existspack(sv,mg) |
928 | SV* sv; | |
929 | MAGIC* mg; | |
930 | { | |
931 | return magic_methpack(sv,mg,"EXISTS"); | |
932 | } | |
933 | ||
934 | int | |
79072805 LW |
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 LW |
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 LW |
960 | return 0; |
961 | } | |
962 | ||
963 | int | |
964 | magic_setarylen(sv,mg) | |
965 | SV* sv; | |
966 | MAGIC* mg; | |
967 | { | |
a0d0e21e LW |
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 LW |
1025 | return 0; |
1026 | } | |
1027 | ||
1028 | int | |
1029 | magic_getglob(sv,mg) | |
1030 | SV* sv; | |
1031 | MAGIC* mg; | |
1032 | { | |
8646b087 | 1033 | if (SvFAKE(sv)) { /* FAKE globs can get coerced */ |
1034 | SvFAKE_off(sv); | |
1035 | gv_efullname(sv,((GV*)sv), "*"); | |
1036 | SvFAKE_on(sv); | |
1037 | } | |
1038 | else | |
1039 | gv_efullname(sv,((GV*)sv), "*"); /* a gv value, be nice */ | |
79072805 LW |
1040 | return 0; |
1041 | } | |
1042 | ||
1043 | int | |
1044 | magic_setglob(sv,mg) | |
1045 | SV* sv; | |
1046 | MAGIC* mg; | |
1047 | { | |
1048 | register char *s; | |
1049 | GV* gv; | |
1050 | ||
1051 | if (!SvOK(sv)) | |
1052 | return 0; | |
463ee0b2 | 1053 | s = SvPV(sv, na); |
79072805 LW |
1054 | if (*s == '*' && s[1]) |
1055 | s++; | |
85e6fe83 | 1056 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
1057 | if (sv == (SV*)gv) |
1058 | return 0; | |
1059 | if (GvGP(sv)) | |
88e89b8a | 1060 | gp_free((GV*)sv); |
79072805 LW |
1061 | GvGP(sv) = gp_ref(GvGP(gv)); |
1062 | if (!GvAV(gv)) | |
1063 | gv_AVadd(gv); | |
1064 | if (!GvHV(gv)) | |
1065 | gv_HVadd(gv); | |
a0d0e21e LW |
1066 | if (!GvIOp(gv)) |
1067 | GvIOp(gv) = newIO(); | |
79072805 LW |
1068 | return 0; |
1069 | } | |
1070 | ||
1071 | int | |
1072 | magic_setsubstr(sv,mg) | |
1073 | SV* sv; | |
1074 | MAGIC* mg; | |
1075 | { | |
8990e307 LW |
1076 | STRLEN len; |
1077 | char *tmps = SvPV(sv,len); | |
1078 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
1079 | return 0; |
1080 | } | |
1081 | ||
1082 | int | |
463ee0b2 LW |
1083 | magic_gettaint(sv,mg) |
1084 | SV* sv; | |
1085 | MAGIC* mg; | |
1086 | { | |
748a9306 LW |
1087 | if (mg->mg_len & 1) |
1088 | tainted = TRUE; | |
1089 | else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */ | |
1090 | tainted = TRUE; | |
463ee0b2 LW |
1091 | return 0; |
1092 | } | |
1093 | ||
1094 | int | |
1095 | magic_settaint(sv,mg) | |
1096 | SV* sv; | |
1097 | MAGIC* mg; | |
1098 | { | |
748a9306 LW |
1099 | if (localizing) { |
1100 | if (localizing == 1) | |
1101 | mg->mg_len <<= 1; | |
1102 | else | |
1103 | mg->mg_len >>= 1; | |
a0d0e21e | 1104 | } |
748a9306 LW |
1105 | else if (tainted) |
1106 | mg->mg_len |= 1; | |
1107 | else | |
1108 | mg->mg_len &= ~1; | |
463ee0b2 LW |
1109 | return 0; |
1110 | } | |
1111 | ||
1112 | int | |
79072805 LW |
1113 | magic_setvec(sv,mg) |
1114 | SV* sv; | |
1115 | MAGIC* mg; | |
1116 | { | |
1117 | do_vecset(sv); /* XXX slurp this routine */ | |
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | int | |
93a17b20 LW |
1122 | magic_setmglob(sv,mg) |
1123 | SV* sv; | |
1124 | MAGIC* mg; | |
1125 | { | |
a0d0e21e | 1126 | mg->mg_len = -1; |
c6496cc7 | 1127 | SvSCREAM_off(sv); |
93a17b20 LW |
1128 | return 0; |
1129 | } | |
1130 | ||
1131 | int | |
79072805 LW |
1132 | magic_setbm(sv,mg) |
1133 | SV* sv; | |
1134 | MAGIC* mg; | |
1135 | { | |
463ee0b2 | 1136 | sv_unmagic(sv, 'B'); |
79072805 LW |
1137 | SvVALID_off(sv); |
1138 | return 0; | |
1139 | } | |
1140 | ||
1141 | int | |
1142 | magic_setuvar(sv,mg) | |
1143 | SV* sv; | |
1144 | MAGIC* mg; | |
1145 | { | |
1146 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1147 | ||
1148 | if (uf && uf->uf_set) | |
1149 | (*uf->uf_set)(uf->uf_index, sv); | |
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | int | |
1154 | magic_set(sv,mg) | |
1155 | SV* sv; | |
1156 | MAGIC* mg; | |
1157 | { | |
1158 | register char *s; | |
1159 | I32 i; | |
8990e307 | 1160 | STRLEN len; |
79072805 | 1161 | switch (*mg->mg_ptr) { |
748a9306 LW |
1162 | case '\001': /* ^A */ |
1163 | sv_setsv(bodytarget, sv); | |
1164 | break; | |
79072805 | 1165 | case '\004': /* ^D */ |
8990e307 | 1166 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1167 | DEBUG_x(dump_all()); |
1168 | break; | |
28f23441 | 1169 | case '\005': /* ^E */ |
1170 | #ifdef VMS | |
1171 | set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); | |
1172 | #else | |
1173 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */ | |
1174 | #endif | |
1175 | break; | |
79072805 | 1176 | case '\006': /* ^F */ |
463ee0b2 | 1177 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1178 | break; |
a0d0e21e LW |
1179 | case '\010': /* ^H */ |
1180 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1181 | break; | |
79072805 LW |
1182 | case '\t': /* ^I */ |
1183 | if (inplace) | |
1184 | Safefree(inplace); | |
1185 | if (SvOK(sv)) | |
a0d0e21e | 1186 | inplace = savepv(SvPV(sv,na)); |
79072805 LW |
1187 | else |
1188 | inplace = Nullch; | |
1189 | break; | |
28f23441 | 1190 | case '\017': /* ^O */ |
1191 | if (osname) | |
1192 | Safefree(osname); | |
1193 | if (SvOK(sv)) | |
1194 | osname = savepv(SvPV(sv,na)); | |
1195 | else | |
1196 | osname = Nullch; | |
1197 | break; | |
79072805 | 1198 | case '\020': /* ^P */ |
463ee0b2 | 1199 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1200 | if (i != perldb) { |
1201 | if (perldb) | |
1202 | oldlastpm = curpm; | |
1203 | else | |
1204 | curpm = oldlastpm; | |
1205 | } | |
1206 | perldb = i; | |
1207 | break; | |
1208 | case '\024': /* ^T */ | |
88e89b8a | 1209 | #ifdef BIG_TIME |
1210 | basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); | |
1211 | #else | |
85e6fe83 | 1212 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
88e89b8a | 1213 | #endif |
79072805 LW |
1214 | break; |
1215 | case '\027': /* ^W */ | |
463ee0b2 | 1216 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1217 | break; |
1218 | case '.': | |
748a9306 LW |
1219 | if (localizing) { |
1220 | if (localizing == 1) | |
1221 | save_sptr((SV**)&last_in_gv); | |
1222 | } | |
88e89b8a | 1223 | else if (SvOK(sv) && GvIO(last_in_gv)) |
a0d0e21e | 1224 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 LW |
1225 | break; |
1226 | case '^': | |
a0d0e21e LW |
1227 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1228 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1229 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1230 | break; |
1231 | case '~': | |
a0d0e21e LW |
1232 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1233 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1234 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1235 | break; |
1236 | case '=': | |
a0d0e21e | 1237 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1238 | break; |
1239 | case '-': | |
a0d0e21e LW |
1240 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1241 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) | |
1242 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; | |
79072805 LW |
1243 | break; |
1244 | case '%': | |
a0d0e21e | 1245 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1246 | break; |
1247 | case '|': | |
a0d0e21e | 1248 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 | 1249 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e | 1250 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 LW |
1251 | } |
1252 | break; | |
1253 | case '*': | |
463ee0b2 | 1254 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1255 | multiline = (i != 0); |
1256 | break; | |
1257 | case '/': | |
c07a80fd | 1258 | SvREFCNT_dec(nrs); |
1259 | nrs = newSVsv(sv); | |
1260 | SvREFCNT_dec(rs); | |
1261 | rs = SvREFCNT_inc(nrs); | |
79072805 LW |
1262 | break; |
1263 | case '\\': | |
1264 | if (ors) | |
1265 | Safefree(ors); | |
a0d0e21e | 1266 | ors = savepv(SvPV(sv,orslen)); |
79072805 LW |
1267 | break; |
1268 | case ',': | |
1269 | if (ofs) | |
1270 | Safefree(ofs); | |
a0d0e21e | 1271 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 LW |
1272 | break; |
1273 | case '#': | |
1274 | if (ofmt) | |
1275 | Safefree(ofmt); | |
a0d0e21e | 1276 | ofmt = savepv(SvPV(sv,na)); |
79072805 LW |
1277 | break; |
1278 | case '[': | |
a0d0e21e | 1279 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1280 | break; |
1281 | case '?': | |
748a9306 | 1282 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1283 | break; |
1284 | case '!': | |
28f23441 | 1285 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */ |
79072805 LW |
1286 | break; |
1287 | case '<': | |
463ee0b2 | 1288 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1289 | if (delaymagic) { |
1290 | delaymagic |= DM_RUID; | |
1291 | break; /* don't do magic till later */ | |
1292 | } | |
1293 | #ifdef HAS_SETRUID | |
85e6fe83 | 1294 | (void)setruid((Uid_t)uid); |
79072805 LW |
1295 | #else |
1296 | #ifdef HAS_SETREUID | |
85e6fe83 | 1297 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 | 1298 | #else |
85e6fe83 LW |
1299 | #ifdef HAS_SETRESUID |
1300 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); | |
79072805 LW |
1301 | #else |
1302 | if (uid == euid) /* special case $< = $> */ | |
1303 | (void)setuid(uid); | |
a0d0e21e LW |
1304 | else { |
1305 | uid = (I32)getuid(); | |
463ee0b2 | 1306 | croak("setruid() not implemented"); |
a0d0e21e | 1307 | } |
79072805 LW |
1308 | #endif |
1309 | #endif | |
85e6fe83 | 1310 | #endif |
748a9306 | 1311 | uid = (I32)getuid(); |
4633a7c4 | 1312 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1313 | break; |
1314 | case '>': | |
463ee0b2 | 1315 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1316 | if (delaymagic) { |
1317 | delaymagic |= DM_EUID; | |
1318 | break; /* don't do magic till later */ | |
1319 | } | |
1320 | #ifdef HAS_SETEUID | |
85e6fe83 | 1321 | (void)seteuid((Uid_t)euid); |
79072805 LW |
1322 | #else |
1323 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1324 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1325 | #else | |
1326 | #ifdef HAS_SETRESUID | |
1327 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); | |
79072805 LW |
1328 | #else |
1329 | if (euid == uid) /* special case $> = $< */ | |
1330 | setuid(euid); | |
a0d0e21e LW |
1331 | else { |
1332 | euid = (I32)geteuid(); | |
463ee0b2 | 1333 | croak("seteuid() not implemented"); |
a0d0e21e | 1334 | } |
79072805 LW |
1335 | #endif |
1336 | #endif | |
85e6fe83 | 1337 | #endif |
79072805 | 1338 | euid = (I32)geteuid(); |
4633a7c4 | 1339 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1340 | break; |
1341 | case '(': | |
463ee0b2 | 1342 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1343 | if (delaymagic) { |
1344 | delaymagic |= DM_RGID; | |
1345 | break; /* don't do magic till later */ | |
1346 | } | |
1347 | #ifdef HAS_SETRGID | |
85e6fe83 | 1348 | (void)setrgid((Gid_t)gid); |
79072805 LW |
1349 | #else |
1350 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1351 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1352 | #else | |
1353 | #ifdef HAS_SETRESGID | |
1354 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); | |
79072805 LW |
1355 | #else |
1356 | if (gid == egid) /* special case $( = $) */ | |
1357 | (void)setgid(gid); | |
748a9306 LW |
1358 | else { |
1359 | gid = (I32)getgid(); | |
463ee0b2 | 1360 | croak("setrgid() not implemented"); |
748a9306 | 1361 | } |
79072805 LW |
1362 | #endif |
1363 | #endif | |
85e6fe83 | 1364 | #endif |
79072805 | 1365 | gid = (I32)getgid(); |
4633a7c4 | 1366 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1367 | break; |
1368 | case ')': | |
463ee0b2 | 1369 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1370 | if (delaymagic) { |
1371 | delaymagic |= DM_EGID; | |
1372 | break; /* don't do magic till later */ | |
1373 | } | |
1374 | #ifdef HAS_SETEGID | |
85e6fe83 | 1375 | (void)setegid((Gid_t)egid); |
79072805 LW |
1376 | #else |
1377 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1378 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1379 | #else | |
1380 | #ifdef HAS_SETRESGID | |
1381 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); | |
79072805 LW |
1382 | #else |
1383 | if (egid == gid) /* special case $) = $( */ | |
1384 | (void)setgid(egid); | |
748a9306 LW |
1385 | else { |
1386 | egid = (I32)getegid(); | |
463ee0b2 | 1387 | croak("setegid() not implemented"); |
748a9306 | 1388 | } |
79072805 LW |
1389 | #endif |
1390 | #endif | |
85e6fe83 | 1391 | #endif |
79072805 | 1392 | egid = (I32)getegid(); |
4633a7c4 | 1393 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1394 | break; |
1395 | case ':': | |
a0d0e21e | 1396 | chopset = SvPV_force(sv,na); |
79072805 LW |
1397 | break; |
1398 | case '0': | |
1399 | if (!origalen) { | |
1400 | s = origargv[0]; | |
1401 | s += strlen(s); | |
1402 | /* See if all the arguments are contiguous in memory */ | |
1403 | for (i = 1; i < origargc; i++) { | |
1404 | if (origargv[i] == s + 1) | |
1405 | s += strlen(++s); /* this one is ok too */ | |
1406 | } | |
1407 | if (origenviron[0] == s + 1) { /* can grab env area too? */ | |
1408 | my_setenv("NoNeSuCh", Nullch); | |
1409 | /* force copy of environment */ | |
1410 | for (i = 0; origenviron[i]; i++) | |
1411 | if (origenviron[i] == s + 1) | |
1412 | s += strlen(++s); | |
1413 | } | |
1414 | origalen = s - origargv[0]; | |
1415 | } | |
a0d0e21e | 1416 | s = SvPV_force(sv,len); |
8990e307 | 1417 | i = len; |
79072805 LW |
1418 | if (i >= origalen) { |
1419 | i = origalen; | |
1420 | SvCUR_set(sv, i); | |
1421 | *SvEND(sv) = '\0'; | |
1422 | Copy(s, origargv[0], i, char); | |
1423 | } | |
1424 | else { | |
1425 | Copy(s, origargv[0], i, char); | |
1426 | s = origargv[0]+i; | |
1427 | *s++ = '\0'; | |
1428 | while (++i < origalen) | |
8990e307 LW |
1429 | *s++ = ' '; |
1430 | s = origargv[0]+i; | |
ed6116ce | 1431 | for (i = 1; i < origargc; i++) |
8990e307 | 1432 | origargv[i] = Nullch; |
79072805 LW |
1433 | } |
1434 | break; | |
1435 | } | |
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | I32 | |
1440 | whichsig(sig) | |
1441 | char *sig; | |
1442 | { | |
1443 | register char **sigv; | |
1444 | ||
1445 | for (sigv = sig_name+1; *sigv; sigv++) | |
1446 | if (strEQ(sig,*sigv)) | |
8e07c86e | 1447 | return sig_num[sigv - sig_name]; |
79072805 LW |
1448 | #ifdef SIGCLD |
1449 | if (strEQ(sig,"CHLD")) | |
1450 | return SIGCLD; | |
1451 | #endif | |
1452 | #ifdef SIGCHLD | |
1453 | if (strEQ(sig,"CLD")) | |
1454 | return SIGCHLD; | |
1455 | #endif | |
1456 | return 0; | |
1457 | } | |
1458 | ||
ecfc5424 | 1459 | Signal_t |
79072805 | 1460 | sighandler(sig) |
a0d0e21e | 1461 | int sig; |
79072805 LW |
1462 | { |
1463 | dSP; | |
1464 | GV *gv; | |
a0d0e21e | 1465 | HV *st; |
79072805 LW |
1466 | SV *sv; |
1467 | CV *cv; | |
79072805 | 1468 | AV *oldstack; |
760ac839 LW |
1469 | |
1470 | if(!psig_ptr[sig]) | |
1471 | die("Signal SIG%s received, but no signal handler set.\n", | |
1472 | sig_name[sig]); | |
79072805 | 1473 | |
88e89b8a | 1474 | cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE); |
a0d0e21e | 1475 | if (!cv || !CvROOT(cv)) { |
79072805 LW |
1476 | if (dowarn) |
1477 | warn("SIG%s handler \"%s\" not defined.\n", | |
88e89b8a | 1478 | sig_name[sig], GvENAME(gv) ); |
79072805 LW |
1479 | return; |
1480 | } | |
1481 | ||
88e89b8a | 1482 | oldstack = curstack; |
1483 | if (curstack != signalstack) | |
a0d0e21e | 1484 | AvFILL(signalstack) = 0; |
88e89b8a | 1485 | SWITCHSTACK(curstack, signalstack); |
79072805 | 1486 | |
88e89b8a | 1487 | if(psig_name[sig]) |
1488 | sv = SvREFCNT_inc(psig_name[sig]); | |
1489 | else { | |
1490 | sv = sv_newmortal(); | |
1491 | sv_setpv(sv,sig_name[sig]); | |
1492 | } | |
a0d0e21e | 1493 | PUSHMARK(sp); |
79072805 | 1494 | PUSHs(sv); |
79072805 | 1495 | PUTBACK; |
a0d0e21e LW |
1496 | |
1497 | perl_call_sv((SV*)cv, G_DISCARD); | |
79072805 LW |
1498 | |
1499 | SWITCHSTACK(signalstack, oldstack); | |
79072805 LW |
1500 | |
1501 | return; | |
1502 | } |