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; |
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 LW |
121 | return 0; |
122 | } | |
123 | ||
124 | int | |
125 | mg_set(sv) | |
126 | SV* sv; | |
127 | { | |
c07a80fd | 128 | MGS* mgs; |
79072805 | 129 | MAGIC* mg; |
463ee0b2 LW |
130 | MAGIC* nextmg; |
131 | ||
c07a80fd | 132 | ENTER; |
133 | mgs = save_magic(sv); | |
463ee0b2 LW |
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 LW |
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 LW |
142 | if (vtbl && vtbl->svt_set) |
143 | (*vtbl->svt_set)(sv, mg); | |
144 | } | |
463ee0b2 | 145 | |
c07a80fd | 146 | LEAVE; |
79072805 LW |
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 LW |
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 LW |
166 | return len; |
167 | } | |
168 | } | |
169 | ||
748a9306 | 170 | junk = SvPV(sv, len); |
463ee0b2 | 171 | return len; |
79072805 LW |
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 LW |
183 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
184 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
185 | /* omit GSKIP -- never set here */ |
186 | ||
79072805 LW |
187 | if (vtbl && vtbl->svt_clear) |
188 | (*vtbl->svt_clear)(sv, mg); | |
189 | } | |
463ee0b2 | 190 | |
c07a80fd | 191 | LEAVE; |
79072805 LW |
192 | return 0; |
193 | } | |
194 | ||
93a17b20 LW |
195 | MAGIC* |
196 | mg_find(sv, type) | |
197 | SV* sv; | |
a0d0e21e | 198 | int type; |
93a17b20 LW |
199 | { |
200 | MAGIC* mg; | |
93a17b20 LW |
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 LW |
211 | SV* nsv; |
212 | char *key; | |
213 | STRLEN klen; | |
79072805 | 214 | { |
463ee0b2 | 215 | int count = 0; |
79072805 | 216 | MAGIC* mg; |
463ee0b2 LW |
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 LW |
224 | } |
225 | ||
226 | int | |
463ee0b2 | 227 | mg_free(sv) |
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
269 | (s = curpm->op_pmregexp->startp[paren]) && |
270 | (t = curpm->op_pmregexp->endp[paren]) ) { | |
271 | i = t - s; | |
93a17b20 LW |
272 | if (i >= 0) |
273 | return i; | |
93a17b20 | 274 | } |
93a17b20 | 275 | } |
748a9306 | 276 | return 0; |
93a17b20 LW |
277 | break; |
278 | case '+': | |
279 | if (curpm) { | |
280 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
281 | if (!paren) |
282 | return 0; | |
93a17b20 LW |
283 | goto getparen; |
284 | } | |
748a9306 | 285 | return 0; |
93a17b20 LW |
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 LW |
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 LW |
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 LW |
313 | if (SvPOK(sv)) |
314 | return SvCUR(sv); | |
315 | return 0; | |
316 | } | |
317 | ||
79072805 LW |
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 LW |
327 | |
328 | switch (*mg->mg_ptr) { | |
748a9306 LW |
329 | case '\001': /* ^A */ |
330 | sv_setsv(sv, bodytarget); | |
331 | break; | |
79072805 LW |
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 LW |
338 | case '\010': /* ^H */ |
339 | sv_setiv(sv,(I32)hints); | |
340 | break; | |
79072805 LW |
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 LW |
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 LW |
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 LW |
376 | break; |
377 | case '+': | |
378 | if (curpm) { | |
379 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
380 | if (paren) |
381 | goto getparen; | |
79072805 | 382 | } |
748a9306 | 383 | sv_setsv(sv,&sv_undef); |
79072805 LW |
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 LW |
392 | break; |
393 | } | |
79072805 | 394 | } |
79072805 | 395 | } |
748a9306 | 396 | sv_setsv(sv,&sv_undef); |
79072805 LW |
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 LW |
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 LW |
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 LW |
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 LW |
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 LW |
436 | break; |
437 | case '-': | |
a0d0e21e | 438 | sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 LW |
439 | break; |
440 | case '%': | |
a0d0e21e | 441 | sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv))); |
79072805 LW |
442 | break; |
443 | #endif | |
444 | case ':': | |
445 | break; | |
446 | case '/': | |
447 | break; | |
448 | case '[': | |
a0d0e21e | 449 | sv_setiv(sv,(I32)curcop->cop_arybase); |
79072805 LW |
450 | break; |
451 | case '|': | |
a0d0e21e | 452 | sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
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 '!': | |
464 | sv_setnv(sv,(double)errno); | |
2304df62 | 465 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
79072805 LW |
466 | SvNOK_on(sv); /* what a wonderful hack! */ |
467 | break; | |
468 | case '<': | |
469 | sv_setiv(sv,(I32)uid); | |
470 | break; | |
471 | case '>': | |
472 | sv_setiv(sv,(I32)euid); | |
473 | break; | |
474 | case '(': | |
475 | s = buf; | |
476 | (void)sprintf(s,"%d",(int)gid); | |
477 | goto add_groups; | |
478 | case ')': | |
479 | s = buf; | |
480 | (void)sprintf(s,"%d",(int)egid); | |
481 | add_groups: | |
482 | while (*s) s++; | |
483 | #ifdef HAS_GETGROUPS | |
484 | #ifndef NGROUPS | |
485 | #define NGROUPS 32 | |
486 | #endif | |
487 | { | |
a0d0e21e | 488 | Groups_t gary[NGROUPS]; |
79072805 LW |
489 | |
490 | i = getgroups(NGROUPS,gary); | |
491 | while (--i >= 0) { | |
492 | (void)sprintf(s," %ld", (long)gary[i]); | |
493 | while (*s) s++; | |
494 | } | |
495 | } | |
496 | #endif | |
497 | sv_setpv(sv,buf); | |
498 | break; | |
499 | case '*': | |
500 | break; | |
501 | case '0': | |
502 | break; | |
503 | } | |
a0d0e21e | 504 | return 0; |
79072805 LW |
505 | } |
506 | ||
507 | int | |
508 | magic_getuvar(sv, mg) | |
509 | SV *sv; | |
510 | MAGIC *mg; | |
511 | { | |
512 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
513 | ||
514 | if (uf && uf->uf_val) | |
515 | (*uf->uf_val)(uf->uf_index, sv); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | int | |
520 | magic_setenv(sv,mg) | |
521 | SV* sv; | |
522 | MAGIC* mg; | |
523 | { | |
524 | register char *s; | |
a0d0e21e LW |
525 | STRLEN len; |
526 | I32 i; | |
527 | s = SvPV(sv,len); | |
79072805 | 528 | my_setenv(mg->mg_ptr,s); |
a0d0e21e LW |
529 | #ifdef DYNAMIC_ENV_FETCH |
530 | /* We just undefd an environment var. Is a replacement */ | |
531 | /* waiting in the wings? */ | |
532 | if (!len) { | |
533 | SV **envsvp; | |
534 | if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE)) | |
535 | s = SvPV(*envsvp,len); | |
536 | } | |
537 | #endif | |
79072805 LW |
538 | /* And you'll never guess what the dog had */ |
539 | /* in its mouth... */ | |
463ee0b2 LW |
540 | if (tainting) { |
541 | if (s && strEQ(mg->mg_ptr,"PATH")) { | |
a0d0e21e | 542 | char *strend = s + len; |
463ee0b2 LW |
543 | |
544 | while (s < strend) { | |
545 | s = cpytill(tokenbuf,s,strend,':',&i); | |
546 | s++; | |
547 | if (*tokenbuf != '/' | |
a0d0e21e | 548 | || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
8990e307 | 549 | MgTAINTEDDIR_on(mg); |
463ee0b2 | 550 | } |
79072805 LW |
551 | } |
552 | } | |
79072805 LW |
553 | return 0; |
554 | } | |
555 | ||
556 | int | |
85e6fe83 LW |
557 | magic_clearenv(sv,mg) |
558 | SV* sv; | |
559 | MAGIC* mg; | |
560 | { | |
561 | my_setenv(mg->mg_ptr,Nullch); | |
562 | return 0; | |
563 | } | |
564 | ||
3d37d572 | 565 | #ifdef HAS_SIGACTION |
566 | /* set up reliable signal() clone */ | |
567 | ||
568 | typedef void (*Sigfunc) _((int)); | |
569 | ||
570 | static | |
571 | Sigfunc rsignal(signo,handler) | |
572 | int signo; | |
573 | Sigfunc handler; | |
574 | { | |
575 | struct sigaction act,oact; | |
576 | ||
577 | act.sa_handler = handler; | |
578 | sigemptyset(&act.sa_mask); | |
579 | act.sa_flags = 0; | |
580 | #ifdef SIGALRM | |
581 | if (signo == SIGALRM) { | |
582 | #else | |
583 | if (0) { | |
584 | #endif | |
585 | #ifdef SA_INTERRUPT | |
586 | act.sa_flags |= SA_INTERRUPT; /* SunOS */ | |
587 | #endif | |
588 | } else { | |
589 | #ifdef SA_RESTART | |
590 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
591 | #endif | |
592 | } | |
593 | if (sigaction(signo, &act, &oact) < 0) | |
594 | return(SIG_ERR); | |
595 | else | |
596 | return(oact.sa_handler); | |
597 | } | |
598 | ||
599 | #else | |
600 | ||
601 | /* ah well, so much for reliability */ | |
602 | ||
603 | #define rsignal(x,y) signal(x,y) | |
604 | ||
605 | #endif | |
606 | ||
607 | ||
85e6fe83 | 608 | int |
79072805 LW |
609 | magic_setsig(sv,mg) |
610 | SV* sv; | |
611 | MAGIC* mg; | |
612 | { | |
613 | register char *s; | |
614 | I32 i; | |
748a9306 | 615 | SV** svp; |
a0d0e21e | 616 | |
748a9306 LW |
617 | s = mg->mg_ptr; |
618 | if (*s == '_') { | |
619 | if (strEQ(s,"__DIE__")) | |
620 | svp = &diehook; | |
621 | else if (strEQ(s,"__WARN__")) | |
622 | svp = &warnhook; | |
623 | else if (strEQ(s,"__PARSE__")) | |
624 | svp = &parsehook; | |
625 | else | |
626 | croak("No such hook: %s", s); | |
627 | i = 0; | |
4633a7c4 LW |
628 | if (*svp) { |
629 | SvREFCNT_dec(*svp); | |
630 | *svp = 0; | |
631 | } | |
748a9306 LW |
632 | } |
633 | else { | |
634 | i = whichsig(s); /* ...no, a brick */ | |
635 | if (!i) { | |
636 | if (dowarn || strEQ(s,"ALARM")) | |
637 | warn("No such signal: SIG%s", s); | |
638 | return 0; | |
639 | } | |
640 | } | |
a0d0e21e | 641 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 642 | if (i) |
3d37d572 | 643 | (void)rsignal(i,sighandler); |
748a9306 LW |
644 | else |
645 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
646 | return 0; |
647 | } | |
648 | s = SvPV_force(sv,na); | |
748a9306 LW |
649 | if (strEQ(s,"IGNORE")) { |
650 | if (i) | |
3d37d572 | 651 | (void)rsignal(i,SIG_IGN); |
748a9306 LW |
652 | else |
653 | *svp = 0; | |
654 | } | |
655 | else if (strEQ(s,"DEFAULT") || !*s) { | |
656 | if (i) | |
3d37d572 | 657 | (void)rsignal(i,SIG_DFL); |
748a9306 LW |
658 | else |
659 | *svp = 0; | |
660 | } | |
79072805 | 661 | else { |
2304df62 AD |
662 | if (!strchr(s,':') && !strchr(s,'\'')) { |
663 | sprintf(tokenbuf, "main::%s",s); | |
79072805 LW |
664 | sv_setpv(sv,tokenbuf); |
665 | } | |
748a9306 | 666 | if (i) |
3d37d572 | 667 | (void)rsignal(i,sighandler); |
748a9306 LW |
668 | else |
669 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
670 | } |
671 | return 0; | |
672 | } | |
673 | ||
674 | int | |
463ee0b2 | 675 | magic_setisa(sv,mg) |
79072805 LW |
676 | SV* sv; |
677 | MAGIC* mg; | |
678 | { | |
463ee0b2 LW |
679 | sub_generation++; |
680 | return 0; | |
681 | } | |
682 | ||
a0d0e21e LW |
683 | #ifdef OVERLOAD |
684 | ||
463ee0b2 | 685 | int |
a0d0e21e | 686 | magic_setamagic(sv,mg) |
463ee0b2 LW |
687 | SV* sv; |
688 | MAGIC* mg; | |
689 | { | |
a0d0e21e LW |
690 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
691 | amagic_generation++; | |
463ee0b2 | 692 | |
a0d0e21e LW |
693 | return 0; |
694 | } | |
695 | #endif /* OVERLOAD */ | |
463ee0b2 | 696 | |
a0d0e21e LW |
697 | static int |
698 | magic_methpack(sv,mg,meth) | |
699 | SV* sv; | |
700 | MAGIC* mg; | |
701 | char *meth; | |
702 | { | |
703 | dSP; | |
463ee0b2 | 704 | |
a0d0e21e LW |
705 | ENTER; |
706 | SAVETMPS; | |
707 | PUSHMARK(sp); | |
708 | EXTEND(sp, 2); | |
709 | PUSHs(mg->mg_obj); | |
463ee0b2 | 710 | if (mg->mg_ptr) |
a0d0e21e LW |
711 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
712 | else if (mg->mg_type == 'p') | |
713 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
714 | PUTBACK; |
715 | ||
a0d0e21e LW |
716 | if (perl_call_method(meth, G_SCALAR)) |
717 | sv_setsv(sv, *stack_sp--); | |
463ee0b2 | 718 | |
a0d0e21e LW |
719 | FREETMPS; |
720 | LEAVE; | |
721 | return 0; | |
722 | } | |
463ee0b2 | 723 | |
a0d0e21e LW |
724 | int |
725 | magic_getpack(sv,mg) | |
726 | SV* sv; | |
727 | MAGIC* mg; | |
728 | { | |
729 | magic_methpack(sv,mg,"FETCH"); | |
730 | if (mg->mg_ptr) | |
731 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
732 | return 0; |
733 | } | |
734 | ||
735 | int | |
736 | magic_setpack(sv,mg) | |
737 | SV* sv; | |
738 | MAGIC* mg; | |
739 | { | |
463ee0b2 | 740 | dSP; |
463ee0b2 | 741 | |
a0d0e21e LW |
742 | PUSHMARK(sp); |
743 | EXTEND(sp, 3); | |
744 | PUSHs(mg->mg_obj); | |
463ee0b2 | 745 | if (mg->mg_ptr) |
a0d0e21e LW |
746 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
747 | else if (mg->mg_type == 'p') | |
748 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
749 | PUSHs(sv); |
750 | PUTBACK; | |
751 | ||
a0d0e21e | 752 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
753 | |
754 | return 0; | |
755 | } | |
756 | ||
757 | int | |
758 | magic_clearpack(sv,mg) | |
759 | SV* sv; | |
760 | MAGIC* mg; | |
761 | { | |
a0d0e21e LW |
762 | return magic_methpack(sv,mg,"DELETE"); |
763 | } | |
463ee0b2 | 764 | |
a0d0e21e LW |
765 | int magic_wipepack(sv,mg) |
766 | SV* sv; | |
767 | MAGIC* mg; | |
768 | { | |
769 | dSP; | |
463ee0b2 | 770 | |
a0d0e21e LW |
771 | PUSHMARK(sp); |
772 | XPUSHs(mg->mg_obj); | |
463ee0b2 | 773 | PUTBACK; |
463ee0b2 | 774 | |
a0d0e21e | 775 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
776 | |
777 | return 0; | |
778 | } | |
779 | ||
780 | int | |
781 | magic_nextpack(sv,mg,key) | |
782 | SV* sv; | |
783 | MAGIC* mg; | |
784 | SV* key; | |
785 | { | |
463ee0b2 | 786 | dSP; |
a0d0e21e | 787 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
788 | |
789 | ENTER; | |
a0d0e21e LW |
790 | SAVETMPS; |
791 | PUSHMARK(sp); | |
792 | EXTEND(sp, 2); | |
793 | PUSHs(mg->mg_obj); | |
463ee0b2 LW |
794 | if (SvOK(key)) |
795 | PUSHs(key); | |
796 | PUTBACK; | |
797 | ||
a0d0e21e LW |
798 | if (perl_call_method(meth, G_SCALAR)) |
799 | sv_setsv(key, *stack_sp--); | |
463ee0b2 | 800 | |
a0d0e21e LW |
801 | FREETMPS; |
802 | LEAVE; | |
79072805 LW |
803 | return 0; |
804 | } | |
805 | ||
806 | int | |
a0d0e21e LW |
807 | magic_existspack(sv,mg) |
808 | SV* sv; | |
809 | MAGIC* mg; | |
810 | { | |
811 | return magic_methpack(sv,mg,"EXISTS"); | |
812 | } | |
813 | ||
814 | int | |
79072805 LW |
815 | magic_setdbline(sv,mg) |
816 | SV* sv; | |
817 | MAGIC* mg; | |
818 | { | |
819 | OP *o; | |
820 | I32 i; | |
821 | GV* gv; | |
822 | SV** svp; | |
823 | ||
824 | gv = DBline; | |
825 | i = SvTRUE(sv); | |
826 | svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE); | |
8990e307 | 827 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 828 | o->op_private = i; |
79072805 LW |
829 | else |
830 | warn("Can't break at that line\n"); | |
831 | return 0; | |
832 | } | |
833 | ||
834 | int | |
835 | magic_getarylen(sv,mg) | |
836 | SV* sv; | |
837 | MAGIC* mg; | |
838 | { | |
a0d0e21e | 839 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); |
79072805 LW |
840 | return 0; |
841 | } | |
842 | ||
843 | int | |
844 | magic_setarylen(sv,mg) | |
845 | SV* sv; | |
846 | MAGIC* mg; | |
847 | { | |
a0d0e21e LW |
848 | av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase); |
849 | return 0; | |
850 | } | |
851 | ||
852 | int | |
853 | magic_getpos(sv,mg) | |
854 | SV* sv; | |
855 | MAGIC* mg; | |
856 | { | |
857 | SV* lsv = LvTARG(sv); | |
858 | ||
859 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
860 | mg = mg_find(lsv, 'g'); | |
861 | if (mg && mg->mg_len >= 0) { | |
862 | sv_setiv(sv, mg->mg_len + curcop->cop_arybase); | |
863 | return 0; | |
864 | } | |
865 | } | |
866 | (void)SvOK_off(sv); | |
867 | return 0; | |
868 | } | |
869 | ||
870 | int | |
871 | magic_setpos(sv,mg) | |
872 | SV* sv; | |
873 | MAGIC* mg; | |
874 | { | |
875 | SV* lsv = LvTARG(sv); | |
876 | SSize_t pos; | |
877 | STRLEN len; | |
878 | ||
879 | mg = 0; | |
880 | ||
881 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
882 | mg = mg_find(lsv, 'g'); | |
883 | if (!mg) { | |
884 | if (!SvOK(sv)) | |
885 | return 0; | |
886 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
887 | mg = mg_find(lsv, 'g'); | |
888 | } | |
889 | else if (!SvOK(sv)) { | |
890 | mg->mg_len = -1; | |
891 | return 0; | |
892 | } | |
893 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
894 | ||
895 | pos = SvIV(sv) - curcop->cop_arybase; | |
896 | if (pos < 0) { | |
897 | pos += len; | |
898 | if (pos < 0) | |
899 | pos = 0; | |
900 | } | |
901 | else if (pos > len) | |
902 | pos = len; | |
903 | mg->mg_len = pos; | |
904 | ||
79072805 LW |
905 | return 0; |
906 | } | |
907 | ||
908 | int | |
909 | magic_getglob(sv,mg) | |
910 | SV* sv; | |
911 | MAGIC* mg; | |
912 | { | |
913 | gv_efullname(sv,((GV*)sv));/* a gv value, be nice */ | |
914 | return 0; | |
915 | } | |
916 | ||
917 | int | |
918 | magic_setglob(sv,mg) | |
919 | SV* sv; | |
920 | MAGIC* mg; | |
921 | { | |
922 | register char *s; | |
923 | GV* gv; | |
924 | ||
925 | if (!SvOK(sv)) | |
926 | return 0; | |
463ee0b2 | 927 | s = SvPV(sv, na); |
79072805 LW |
928 | if (*s == '*' && s[1]) |
929 | s++; | |
85e6fe83 | 930 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
931 | if (sv == (SV*)gv) |
932 | return 0; | |
933 | if (GvGP(sv)) | |
934 | gp_free(sv); | |
935 | GvGP(sv) = gp_ref(GvGP(gv)); | |
936 | if (!GvAV(gv)) | |
937 | gv_AVadd(gv); | |
938 | if (!GvHV(gv)) | |
939 | gv_HVadd(gv); | |
a0d0e21e LW |
940 | if (!GvIOp(gv)) |
941 | GvIOp(gv) = newIO(); | |
79072805 LW |
942 | return 0; |
943 | } | |
944 | ||
945 | int | |
946 | magic_setsubstr(sv,mg) | |
947 | SV* sv; | |
948 | MAGIC* mg; | |
949 | { | |
8990e307 LW |
950 | STRLEN len; |
951 | char *tmps = SvPV(sv,len); | |
952 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
953 | return 0; |
954 | } | |
955 | ||
956 | int | |
463ee0b2 LW |
957 | magic_gettaint(sv,mg) |
958 | SV* sv; | |
959 | MAGIC* mg; | |
960 | { | |
748a9306 LW |
961 | if (mg->mg_len & 1) |
962 | tainted = TRUE; | |
963 | else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */ | |
964 | tainted = TRUE; | |
463ee0b2 LW |
965 | return 0; |
966 | } | |
967 | ||
968 | int | |
969 | magic_settaint(sv,mg) | |
970 | SV* sv; | |
971 | MAGIC* mg; | |
972 | { | |
748a9306 LW |
973 | if (localizing) { |
974 | if (localizing == 1) | |
975 | mg->mg_len <<= 1; | |
976 | else | |
977 | mg->mg_len >>= 1; | |
a0d0e21e | 978 | } |
748a9306 LW |
979 | else if (tainted) |
980 | mg->mg_len |= 1; | |
981 | else | |
982 | mg->mg_len &= ~1; | |
463ee0b2 LW |
983 | return 0; |
984 | } | |
985 | ||
986 | int | |
79072805 LW |
987 | magic_setvec(sv,mg) |
988 | SV* sv; | |
989 | MAGIC* mg; | |
990 | { | |
991 | do_vecset(sv); /* XXX slurp this routine */ | |
992 | return 0; | |
993 | } | |
994 | ||
995 | int | |
93a17b20 LW |
996 | magic_setmglob(sv,mg) |
997 | SV* sv; | |
998 | MAGIC* mg; | |
999 | { | |
a0d0e21e | 1000 | mg->mg_len = -1; |
c6496cc7 | 1001 | SvSCREAM_off(sv); |
93a17b20 LW |
1002 | return 0; |
1003 | } | |
1004 | ||
1005 | int | |
79072805 LW |
1006 | magic_setbm(sv,mg) |
1007 | SV* sv; | |
1008 | MAGIC* mg; | |
1009 | { | |
463ee0b2 | 1010 | sv_unmagic(sv, 'B'); |
79072805 LW |
1011 | SvVALID_off(sv); |
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | int | |
1016 | magic_setuvar(sv,mg) | |
1017 | SV* sv; | |
1018 | MAGIC* mg; | |
1019 | { | |
1020 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
1021 | ||
1022 | if (uf && uf->uf_set) | |
1023 | (*uf->uf_set)(uf->uf_index, sv); | |
1024 | return 0; | |
1025 | } | |
1026 | ||
1027 | int | |
1028 | magic_set(sv,mg) | |
1029 | SV* sv; | |
1030 | MAGIC* mg; | |
1031 | { | |
1032 | register char *s; | |
1033 | I32 i; | |
8990e307 | 1034 | STRLEN len; |
79072805 | 1035 | switch (*mg->mg_ptr) { |
748a9306 LW |
1036 | case '\001': /* ^A */ |
1037 | sv_setsv(bodytarget, sv); | |
1038 | break; | |
79072805 | 1039 | case '\004': /* ^D */ |
8990e307 | 1040 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1041 | DEBUG_x(dump_all()); |
1042 | break; | |
1043 | case '\006': /* ^F */ | |
463ee0b2 | 1044 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1045 | break; |
a0d0e21e LW |
1046 | case '\010': /* ^H */ |
1047 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1048 | break; | |
79072805 LW |
1049 | case '\t': /* ^I */ |
1050 | if (inplace) | |
1051 | Safefree(inplace); | |
1052 | if (SvOK(sv)) | |
a0d0e21e | 1053 | inplace = savepv(SvPV(sv,na)); |
79072805 LW |
1054 | else |
1055 | inplace = Nullch; | |
1056 | break; | |
1057 | case '\020': /* ^P */ | |
463ee0b2 | 1058 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1059 | if (i != perldb) { |
1060 | if (perldb) | |
1061 | oldlastpm = curpm; | |
1062 | else | |
1063 | curpm = oldlastpm; | |
1064 | } | |
1065 | perldb = i; | |
1066 | break; | |
1067 | case '\024': /* ^T */ | |
85e6fe83 | 1068 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1069 | break; |
1070 | case '\027': /* ^W */ | |
463ee0b2 | 1071 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1072 | break; |
1073 | case '.': | |
748a9306 LW |
1074 | if (localizing) { |
1075 | if (localizing == 1) | |
1076 | save_sptr((SV**)&last_in_gv); | |
1077 | } | |
2304df62 | 1078 | else if (SvOK(sv)) |
a0d0e21e | 1079 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 LW |
1080 | break; |
1081 | case '^': | |
a0d0e21e LW |
1082 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1083 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1084 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1085 | break; |
1086 | case '~': | |
a0d0e21e LW |
1087 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1088 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1089 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1090 | break; |
1091 | case '=': | |
a0d0e21e | 1092 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1093 | break; |
1094 | case '-': | |
a0d0e21e LW |
1095 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1096 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) | |
1097 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; | |
79072805 LW |
1098 | break; |
1099 | case '%': | |
a0d0e21e | 1100 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1101 | break; |
1102 | case '|': | |
a0d0e21e | 1103 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 | 1104 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e | 1105 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 LW |
1106 | } |
1107 | break; | |
1108 | case '*': | |
463ee0b2 | 1109 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1110 | multiline = (i != 0); |
1111 | break; | |
1112 | case '/': | |
c07a80fd | 1113 | SvREFCNT_dec(nrs); |
1114 | nrs = newSVsv(sv); | |
1115 | SvREFCNT_dec(rs); | |
1116 | rs = SvREFCNT_inc(nrs); | |
79072805 LW |
1117 | break; |
1118 | case '\\': | |
1119 | if (ors) | |
1120 | Safefree(ors); | |
a0d0e21e | 1121 | ors = savepv(SvPV(sv,orslen)); |
79072805 LW |
1122 | break; |
1123 | case ',': | |
1124 | if (ofs) | |
1125 | Safefree(ofs); | |
a0d0e21e | 1126 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 LW |
1127 | break; |
1128 | case '#': | |
1129 | if (ofmt) | |
1130 | Safefree(ofmt); | |
a0d0e21e | 1131 | ofmt = savepv(SvPV(sv,na)); |
79072805 LW |
1132 | break; |
1133 | case '[': | |
a0d0e21e | 1134 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1135 | break; |
1136 | case '?': | |
748a9306 | 1137 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1138 | break; |
1139 | case '!': | |
748a9306 | 1140 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SS$_ABORT); /* will anyone ever use this? */ |
79072805 LW |
1141 | break; |
1142 | case '<': | |
463ee0b2 | 1143 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1144 | if (delaymagic) { |
1145 | delaymagic |= DM_RUID; | |
1146 | break; /* don't do magic till later */ | |
1147 | } | |
1148 | #ifdef HAS_SETRUID | |
85e6fe83 | 1149 | (void)setruid((Uid_t)uid); |
79072805 LW |
1150 | #else |
1151 | #ifdef HAS_SETREUID | |
85e6fe83 | 1152 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 | 1153 | #else |
85e6fe83 LW |
1154 | #ifdef HAS_SETRESUID |
1155 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); | |
79072805 LW |
1156 | #else |
1157 | if (uid == euid) /* special case $< = $> */ | |
1158 | (void)setuid(uid); | |
a0d0e21e LW |
1159 | else { |
1160 | uid = (I32)getuid(); | |
463ee0b2 | 1161 | croak("setruid() not implemented"); |
a0d0e21e | 1162 | } |
79072805 LW |
1163 | #endif |
1164 | #endif | |
85e6fe83 | 1165 | #endif |
748a9306 | 1166 | uid = (I32)getuid(); |
4633a7c4 | 1167 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1168 | break; |
1169 | case '>': | |
463ee0b2 | 1170 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1171 | if (delaymagic) { |
1172 | delaymagic |= DM_EUID; | |
1173 | break; /* don't do magic till later */ | |
1174 | } | |
1175 | #ifdef HAS_SETEUID | |
85e6fe83 | 1176 | (void)seteuid((Uid_t)euid); |
79072805 LW |
1177 | #else |
1178 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1179 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1180 | #else | |
1181 | #ifdef HAS_SETRESUID | |
1182 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); | |
79072805 LW |
1183 | #else |
1184 | if (euid == uid) /* special case $> = $< */ | |
1185 | setuid(euid); | |
a0d0e21e LW |
1186 | else { |
1187 | euid = (I32)geteuid(); | |
463ee0b2 | 1188 | croak("seteuid() not implemented"); |
a0d0e21e | 1189 | } |
79072805 LW |
1190 | #endif |
1191 | #endif | |
85e6fe83 | 1192 | #endif |
79072805 | 1193 | euid = (I32)geteuid(); |
4633a7c4 | 1194 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1195 | break; |
1196 | case '(': | |
463ee0b2 | 1197 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1198 | if (delaymagic) { |
1199 | delaymagic |= DM_RGID; | |
1200 | break; /* don't do magic till later */ | |
1201 | } | |
1202 | #ifdef HAS_SETRGID | |
85e6fe83 | 1203 | (void)setrgid((Gid_t)gid); |
79072805 LW |
1204 | #else |
1205 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1206 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1207 | #else | |
1208 | #ifdef HAS_SETRESGID | |
1209 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); | |
79072805 LW |
1210 | #else |
1211 | if (gid == egid) /* special case $( = $) */ | |
1212 | (void)setgid(gid); | |
748a9306 LW |
1213 | else { |
1214 | gid = (I32)getgid(); | |
463ee0b2 | 1215 | croak("setrgid() not implemented"); |
748a9306 | 1216 | } |
79072805 LW |
1217 | #endif |
1218 | #endif | |
85e6fe83 | 1219 | #endif |
79072805 | 1220 | gid = (I32)getgid(); |
4633a7c4 | 1221 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1222 | break; |
1223 | case ')': | |
463ee0b2 | 1224 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1225 | if (delaymagic) { |
1226 | delaymagic |= DM_EGID; | |
1227 | break; /* don't do magic till later */ | |
1228 | } | |
1229 | #ifdef HAS_SETEGID | |
85e6fe83 | 1230 | (void)setegid((Gid_t)egid); |
79072805 LW |
1231 | #else |
1232 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1233 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1234 | #else | |
1235 | #ifdef HAS_SETRESGID | |
1236 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); | |
79072805 LW |
1237 | #else |
1238 | if (egid == gid) /* special case $) = $( */ | |
1239 | (void)setgid(egid); | |
748a9306 LW |
1240 | else { |
1241 | egid = (I32)getegid(); | |
463ee0b2 | 1242 | croak("setegid() not implemented"); |
748a9306 | 1243 | } |
79072805 LW |
1244 | #endif |
1245 | #endif | |
85e6fe83 | 1246 | #endif |
79072805 | 1247 | egid = (I32)getegid(); |
4633a7c4 | 1248 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1249 | break; |
1250 | case ':': | |
a0d0e21e | 1251 | chopset = SvPV_force(sv,na); |
79072805 LW |
1252 | break; |
1253 | case '0': | |
1254 | if (!origalen) { | |
1255 | s = origargv[0]; | |
1256 | s += strlen(s); | |
1257 | /* See if all the arguments are contiguous in memory */ | |
1258 | for (i = 1; i < origargc; i++) { | |
1259 | if (origargv[i] == s + 1) | |
1260 | s += strlen(++s); /* this one is ok too */ | |
1261 | } | |
1262 | if (origenviron[0] == s + 1) { /* can grab env area too? */ | |
1263 | my_setenv("NoNeSuCh", Nullch); | |
1264 | /* force copy of environment */ | |
1265 | for (i = 0; origenviron[i]; i++) | |
1266 | if (origenviron[i] == s + 1) | |
1267 | s += strlen(++s); | |
1268 | } | |
1269 | origalen = s - origargv[0]; | |
1270 | } | |
a0d0e21e | 1271 | s = SvPV_force(sv,len); |
8990e307 | 1272 | i = len; |
79072805 LW |
1273 | if (i >= origalen) { |
1274 | i = origalen; | |
1275 | SvCUR_set(sv, i); | |
1276 | *SvEND(sv) = '\0'; | |
1277 | Copy(s, origargv[0], i, char); | |
1278 | } | |
1279 | else { | |
1280 | Copy(s, origargv[0], i, char); | |
1281 | s = origargv[0]+i; | |
1282 | *s++ = '\0'; | |
1283 | while (++i < origalen) | |
8990e307 LW |
1284 | *s++ = ' '; |
1285 | s = origargv[0]+i; | |
ed6116ce | 1286 | for (i = 1; i < origargc; i++) |
8990e307 | 1287 | origargv[i] = Nullch; |
79072805 LW |
1288 | } |
1289 | break; | |
1290 | } | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | I32 | |
1295 | whichsig(sig) | |
1296 | char *sig; | |
1297 | { | |
1298 | register char **sigv; | |
1299 | ||
1300 | for (sigv = sig_name+1; *sigv; sigv++) | |
1301 | if (strEQ(sig,*sigv)) | |
8e07c86e | 1302 | return sig_num[sigv - sig_name]; |
79072805 LW |
1303 | #ifdef SIGCLD |
1304 | if (strEQ(sig,"CHLD")) | |
1305 | return SIGCLD; | |
1306 | #endif | |
1307 | #ifdef SIGCHLD | |
1308 | if (strEQ(sig,"CLD")) | |
1309 | return SIGCHLD; | |
1310 | #endif | |
1311 | return 0; | |
1312 | } | |
1313 | ||
ecfc5424 | 1314 | Signal_t |
79072805 | 1315 | sighandler(sig) |
a0d0e21e | 1316 | int sig; |
79072805 LW |
1317 | { |
1318 | dSP; | |
1319 | GV *gv; | |
a0d0e21e | 1320 | HV *st; |
79072805 LW |
1321 | SV *sv; |
1322 | CV *cv; | |
79072805 | 1323 | AV *oldstack; |
8e07c86e | 1324 | char *signame; |
79072805 LW |
1325 | |
1326 | #ifdef OS2 /* or anybody else who requires SIG_ACK */ | |
1327 | signal(sig, SIG_ACK); | |
1328 | #endif | |
1329 | ||
4633a7c4 | 1330 | signame = sig_name[sig]; |
8e07c86e | 1331 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),signame,strlen(signame), |
a0d0e21e LW |
1332 | TRUE), |
1333 | &st, &gv, TRUE); | |
1334 | if (!cv || !CvROOT(cv) && | |
8e07c86e | 1335 | *signame == 'C' && instr(signame,"LD")) { |
a0d0e21e | 1336 | |
8e07c86e | 1337 | if (signame[1] == 'H') |
a0d0e21e LW |
1338 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE), |
1339 | &st, &gv, TRUE); | |
79072805 | 1340 | else |
a0d0e21e LW |
1341 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE), |
1342 | &st, &gv, TRUE); | |
1343 | /* gag */ | |
79072805 | 1344 | } |
a0d0e21e | 1345 | if (!cv || !CvROOT(cv)) { |
79072805 LW |
1346 | if (dowarn) |
1347 | warn("SIG%s handler \"%s\" not defined.\n", | |
8e07c86e | 1348 | signame, GvENAME(gv) ); |
79072805 LW |
1349 | return; |
1350 | } | |
1351 | ||
1352 | oldstack = stack; | |
a0d0e21e LW |
1353 | if (stack != signalstack) |
1354 | AvFILL(signalstack) = 0; | |
79072805 LW |
1355 | SWITCHSTACK(stack, signalstack); |
1356 | ||
8990e307 | 1357 | sv = sv_newmortal(); |
8e07c86e | 1358 | sv_setpv(sv,signame); |
a0d0e21e | 1359 | PUSHMARK(sp); |
79072805 | 1360 | PUSHs(sv); |
79072805 | 1361 | PUTBACK; |
a0d0e21e LW |
1362 | |
1363 | perl_call_sv((SV*)cv, G_DISCARD); | |
79072805 LW |
1364 | |
1365 | SWITCHSTACK(signalstack, oldstack); | |
79072805 LW |
1366 | |
1367 | return; | |
1368 | } |