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