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