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 | ||
8e07c86e | 24 | |
8990e307 LW |
25 | void |
26 | mg_magical(sv) | |
27 | SV* sv; | |
28 | { | |
29 | MAGIC* mg; | |
30 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { | |
31 | MGVTBL* vtbl = mg->mg_virtual; | |
32 | if (vtbl) { | |
a0d0e21e | 33 | if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) |
8990e307 LW |
34 | SvGMAGICAL_on(sv); |
35 | if (vtbl->svt_set) | |
36 | SvSMAGICAL_on(sv); | |
37 | if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) | |
38 | SvRMAGICAL_on(sv); | |
39 | } | |
40 | } | |
41 | } | |
42 | ||
79072805 LW |
43 | int |
44 | mg_get(sv) | |
45 | SV* sv; | |
46 | { | |
47 | MAGIC* mg; | |
a0d0e21e | 48 | U32 savemagic = SvMAGICAL(sv) | SvREADONLY(sv); |
463ee0b2 | 49 | |
a0d0e21e | 50 | assert(SvGMAGICAL(sv)); |
463ee0b2 | 51 | SvMAGICAL_off(sv); |
a0d0e21e | 52 | SvREADONLY_off(sv); |
8990e307 | 53 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 | 54 | |
79072805 LW |
55 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
56 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e | 57 | if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { |
79072805 | 58 | (*vtbl->svt_get)(sv, mg); |
a0d0e21e LW |
59 | if (mg->mg_flags & MGf_GSKIP) |
60 | savemagic = 0; | |
61 | } | |
79072805 | 62 | } |
463ee0b2 | 63 | |
a0d0e21e LW |
64 | if (savemagic) |
65 | SvFLAGS(sv) |= savemagic; | |
66 | else | |
67 | mg_magical(sv); | |
68 | if (SvGMAGICAL(sv)) | |
69 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
463ee0b2 | 70 | |
79072805 LW |
71 | return 0; |
72 | } | |
73 | ||
74 | int | |
75 | mg_set(sv) | |
76 | SV* sv; | |
77 | { | |
78 | MAGIC* mg; | |
463ee0b2 | 79 | MAGIC* nextmg; |
8990e307 | 80 | U32 savemagic = SvMAGICAL(sv); |
463ee0b2 LW |
81 | |
82 | SvMAGICAL_off(sv); | |
4633a7c4 | 83 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 LW |
84 | |
85 | for (mg = SvMAGIC(sv); mg; mg = nextmg) { | |
79072805 | 86 | MGVTBL* vtbl = mg->mg_virtual; |
463ee0b2 | 87 | nextmg = mg->mg_moremagic; /* it may delete itself */ |
a0d0e21e LW |
88 | if (mg->mg_flags & MGf_GSKIP) { |
89 | mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ | |
90 | savemagic = 0; | |
91 | } | |
79072805 LW |
92 | if (vtbl && vtbl->svt_set) |
93 | (*vtbl->svt_set)(sv, mg); | |
94 | } | |
463ee0b2 LW |
95 | |
96 | if (SvMAGIC(sv)) { | |
a0d0e21e LW |
97 | if (savemagic) |
98 | SvFLAGS(sv) |= savemagic; | |
99 | else | |
100 | mg_magical(sv); | |
8990e307 LW |
101 | if (SvGMAGICAL(sv)) |
102 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
463ee0b2 LW |
103 | } |
104 | ||
79072805 LW |
105 | return 0; |
106 | } | |
107 | ||
108 | U32 | |
109 | mg_len(sv) | |
110 | SV* sv; | |
111 | { | |
112 | MAGIC* mg; | |
748a9306 | 113 | char *junk; |
463ee0b2 | 114 | STRLEN len; |
463ee0b2 | 115 | |
79072805 LW |
116 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
117 | MGVTBL* vtbl = mg->mg_virtual; | |
85e6fe83 LW |
118 | if (vtbl && vtbl->svt_len) { |
119 | U32 savemagic = SvMAGICAL(sv); | |
463ee0b2 | 120 | |
85e6fe83 LW |
121 | SvMAGICAL_off(sv); |
122 | SvFLAGS(sv) |= (SvFLAGS(sv)&(SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; | |
123 | ||
a0d0e21e | 124 | /* omit MGf_GSKIP -- not changed here */ |
85e6fe83 | 125 | len = (*vtbl->svt_len)(sv, mg); |
463ee0b2 | 126 | |
85e6fe83 LW |
127 | SvFLAGS(sv) |= savemagic; |
128 | if (SvGMAGICAL(sv)) | |
129 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
130 | ||
131 | return len; | |
132 | } | |
133 | } | |
134 | ||
748a9306 | 135 | junk = SvPV(sv, len); |
463ee0b2 | 136 | return len; |
79072805 LW |
137 | } |
138 | ||
139 | int | |
140 | mg_clear(sv) | |
141 | SV* sv; | |
142 | { | |
143 | MAGIC* mg; | |
8990e307 | 144 | U32 savemagic = SvMAGICAL(sv); |
463ee0b2 LW |
145 | |
146 | SvMAGICAL_off(sv); | |
8990e307 | 147 | SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
463ee0b2 | 148 | |
79072805 LW |
149 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
150 | MGVTBL* vtbl = mg->mg_virtual; | |
a0d0e21e LW |
151 | /* omit GSKIP -- never set here */ |
152 | ||
79072805 LW |
153 | if (vtbl && vtbl->svt_clear) |
154 | (*vtbl->svt_clear)(sv, mg); | |
155 | } | |
463ee0b2 | 156 | |
8990e307 LW |
157 | SvFLAGS(sv) |= savemagic; |
158 | if (SvGMAGICAL(sv)) | |
159 | SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); | |
463ee0b2 | 160 | |
79072805 LW |
161 | return 0; |
162 | } | |
163 | ||
93a17b20 LW |
164 | MAGIC* |
165 | mg_find(sv, type) | |
166 | SV* sv; | |
a0d0e21e | 167 | int type; |
93a17b20 LW |
168 | { |
169 | MAGIC* mg; | |
93a17b20 LW |
170 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
171 | if (mg->mg_type == type) | |
172 | return mg; | |
173 | } | |
174 | return 0; | |
175 | } | |
176 | ||
79072805 | 177 | int |
463ee0b2 | 178 | mg_copy(sv, nsv, key, klen) |
79072805 | 179 | SV* sv; |
463ee0b2 LW |
180 | SV* nsv; |
181 | char *key; | |
182 | STRLEN klen; | |
79072805 | 183 | { |
463ee0b2 | 184 | int count = 0; |
79072805 | 185 | MAGIC* mg; |
463ee0b2 LW |
186 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
187 | if (isUPPER(mg->mg_type)) { | |
a0d0e21e | 188 | sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); |
463ee0b2 | 189 | count++; |
79072805 | 190 | } |
79072805 | 191 | } |
463ee0b2 | 192 | return count; |
79072805 LW |
193 | } |
194 | ||
195 | int | |
463ee0b2 | 196 | mg_free(sv) |
79072805 LW |
197 | SV* sv; |
198 | { | |
199 | MAGIC* mg; | |
200 | MAGIC* moremagic; | |
201 | for (mg = SvMAGIC(sv); mg; mg = moremagic) { | |
202 | MGVTBL* vtbl = mg->mg_virtual; | |
203 | moremagic = mg->mg_moremagic; | |
204 | if (vtbl && vtbl->svt_free) | |
205 | (*vtbl->svt_free)(sv, mg); | |
93a17b20 | 206 | if (mg->mg_ptr && mg->mg_type != 'g') |
79072805 | 207 | Safefree(mg->mg_ptr); |
85e6fe83 | 208 | if (mg->mg_flags & MGf_REFCOUNTED) |
8990e307 | 209 | SvREFCNT_dec(mg->mg_obj); |
79072805 LW |
210 | Safefree(mg); |
211 | } | |
212 | SvMAGIC(sv) = 0; | |
213 | return 0; | |
214 | } | |
215 | ||
216 | #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX) | |
217 | #include <signal.h> | |
218 | #endif | |
219 | ||
93a17b20 LW |
220 | U32 |
221 | magic_len(sv, mg) | |
222 | SV *sv; | |
223 | MAGIC *mg; | |
224 | { | |
225 | register I32 paren; | |
226 | register char *s; | |
227 | register I32 i; | |
748a9306 | 228 | char *t; |
93a17b20 LW |
229 | |
230 | switch (*mg->mg_ptr) { | |
231 | case '1': case '2': case '3': case '4': | |
232 | case '5': case '6': case '7': case '8': case '9': case '&': | |
233 | if (curpm) { | |
234 | paren = atoi(mg->mg_ptr); | |
235 | getparen: | |
236 | if (curpm->op_pmregexp && | |
237 | paren <= curpm->op_pmregexp->nparens && | |
748a9306 LW |
238 | (s = curpm->op_pmregexp->startp[paren]) && |
239 | (t = curpm->op_pmregexp->endp[paren]) ) { | |
240 | i = t - s; | |
93a17b20 LW |
241 | if (i >= 0) |
242 | return i; | |
93a17b20 | 243 | } |
93a17b20 | 244 | } |
748a9306 | 245 | return 0; |
93a17b20 LW |
246 | break; |
247 | case '+': | |
248 | if (curpm) { | |
249 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
250 | if (!paren) |
251 | return 0; | |
93a17b20 LW |
252 | goto getparen; |
253 | } | |
748a9306 | 254 | return 0; |
93a17b20 LW |
255 | break; |
256 | case '`': | |
257 | if (curpm) { | |
258 | if (curpm->op_pmregexp && | |
259 | (s = curpm->op_pmregexp->subbeg) ) { | |
260 | i = curpm->op_pmregexp->startp[0] - s; | |
261 | if (i >= 0) | |
262 | return i; | |
93a17b20 | 263 | } |
93a17b20 | 264 | } |
748a9306 | 265 | return 0; |
93a17b20 LW |
266 | case '\'': |
267 | if (curpm) { | |
268 | if (curpm->op_pmregexp && | |
269 | (s = curpm->op_pmregexp->endp[0]) ) { | |
270 | return (STRLEN) (curpm->op_pmregexp->subend - s); | |
271 | } | |
93a17b20 | 272 | } |
748a9306 | 273 | return 0; |
93a17b20 LW |
274 | case ',': |
275 | return (STRLEN)ofslen; | |
276 | case '\\': | |
277 | return (STRLEN)orslen; | |
278 | } | |
279 | magic_get(sv,mg); | |
280 | if (!SvPOK(sv) && SvNIOK(sv)) | |
463ee0b2 | 281 | sv_2pv(sv, &na); |
93a17b20 LW |
282 | if (SvPOK(sv)) |
283 | return SvCUR(sv); | |
284 | return 0; | |
285 | } | |
286 | ||
79072805 LW |
287 | int |
288 | magic_get(sv, mg) | |
289 | SV *sv; | |
290 | MAGIC *mg; | |
291 | { | |
292 | register I32 paren; | |
293 | register char *s; | |
294 | register I32 i; | |
748a9306 | 295 | char *t; |
79072805 LW |
296 | |
297 | switch (*mg->mg_ptr) { | |
748a9306 LW |
298 | case '\001': /* ^A */ |
299 | sv_setsv(sv, bodytarget); | |
300 | break; | |
79072805 LW |
301 | case '\004': /* ^D */ |
302 | sv_setiv(sv,(I32)(debug & 32767)); | |
303 | break; | |
304 | case '\006': /* ^F */ | |
305 | sv_setiv(sv,(I32)maxsysfd); | |
306 | break; | |
a0d0e21e LW |
307 | case '\010': /* ^H */ |
308 | sv_setiv(sv,(I32)hints); | |
309 | break; | |
79072805 LW |
310 | case '\t': /* ^I */ |
311 | if (inplace) | |
312 | sv_setpv(sv, inplace); | |
313 | else | |
314 | sv_setsv(sv,&sv_undef); | |
315 | break; | |
316 | case '\020': /* ^P */ | |
317 | sv_setiv(sv,(I32)perldb); | |
318 | break; | |
319 | case '\024': /* ^T */ | |
320 | sv_setiv(sv,(I32)basetime); | |
321 | break; | |
322 | case '\027': /* ^W */ | |
323 | sv_setiv(sv,(I32)dowarn); | |
324 | break; | |
325 | case '1': case '2': case '3': case '4': | |
326 | case '5': case '6': case '7': case '8': case '9': case '&': | |
327 | if (curpm) { | |
328 | paren = atoi(GvENAME(mg->mg_obj)); | |
329 | getparen: | |
330 | if (curpm->op_pmregexp && | |
331 | paren <= curpm->op_pmregexp->nparens && | |
a0d0e21e | 332 | (s = curpm->op_pmregexp->startp[paren]) && |
748a9306 LW |
333 | (t = curpm->op_pmregexp->endp[paren]) ) { |
334 | i = t - s; | |
335 | if (i >= 0) { | |
336 | MAGIC *tmg; | |
79072805 | 337 | sv_setpvn(sv,s,i); |
748a9306 LW |
338 | if (tainting && (tmg = mg_find(sv,'t'))) |
339 | tmg->mg_len = 0; /* guarantee $1 untainted */ | |
340 | break; | |
341 | } | |
79072805 | 342 | } |
79072805 | 343 | } |
748a9306 | 344 | sv_setsv(sv,&sv_undef); |
79072805 LW |
345 | break; |
346 | case '+': | |
347 | if (curpm) { | |
348 | paren = curpm->op_pmregexp->lastparen; | |
a0d0e21e LW |
349 | if (paren) |
350 | goto getparen; | |
79072805 | 351 | } |
748a9306 | 352 | sv_setsv(sv,&sv_undef); |
79072805 LW |
353 | break; |
354 | case '`': | |
355 | if (curpm) { | |
356 | if (curpm->op_pmregexp && | |
357 | (s = curpm->op_pmregexp->subbeg) ) { | |
358 | i = curpm->op_pmregexp->startp[0] - s; | |
748a9306 | 359 | if (i >= 0) { |
79072805 | 360 | sv_setpvn(sv,s,i); |
748a9306 LW |
361 | break; |
362 | } | |
79072805 | 363 | } |
79072805 | 364 | } |
748a9306 | 365 | sv_setsv(sv,&sv_undef); |
79072805 LW |
366 | break; |
367 | case '\'': | |
368 | if (curpm) { | |
369 | if (curpm->op_pmregexp && | |
370 | (s = curpm->op_pmregexp->endp[0]) ) { | |
371 | sv_setpvn(sv,s, curpm->op_pmregexp->subend - s); | |
748a9306 | 372 | break; |
79072805 | 373 | } |
79072805 | 374 | } |
748a9306 | 375 | sv_setsv(sv,&sv_undef); |
79072805 LW |
376 | break; |
377 | case '.': | |
378 | #ifndef lint | |
a0d0e21e | 379 | if (GvIO(last_in_gv)) { |
8990e307 | 380 | sv_setiv(sv,(I32)IoLINES(GvIO(last_in_gv))); |
79072805 LW |
381 | } |
382 | #endif | |
383 | break; | |
384 | case '?': | |
385 | sv_setiv(sv,(I32)statusvalue); | |
386 | break; | |
387 | case '^': | |
a0d0e21e | 388 | s = IoTOP_NAME(GvIOp(defoutgv)); |
79072805 LW |
389 | if (s) |
390 | sv_setpv(sv,s); | |
391 | else { | |
392 | sv_setpv(sv,GvENAME(defoutgv)); | |
393 | sv_catpv(sv,"_TOP"); | |
394 | } | |
395 | break; | |
396 | case '~': | |
a0d0e21e | 397 | s = IoFMT_NAME(GvIOp(defoutgv)); |
79072805 LW |
398 | if (!s) |
399 | s = GvENAME(defoutgv); | |
400 | sv_setpv(sv,s); | |
401 | break; | |
402 | #ifndef lint | |
403 | case '=': | |
a0d0e21e | 404 | sv_setiv(sv,(I32)IoPAGE_LEN(GvIOp(defoutgv))); |
79072805 LW |
405 | break; |
406 | case '-': | |
a0d0e21e | 407 | sv_setiv(sv,(I32)IoLINES_LEFT(GvIOp(defoutgv))); |
79072805 LW |
408 | break; |
409 | case '%': | |
a0d0e21e | 410 | sv_setiv(sv,(I32)IoPAGE(GvIOp(defoutgv))); |
79072805 LW |
411 | break; |
412 | #endif | |
413 | case ':': | |
414 | break; | |
415 | case '/': | |
416 | break; | |
417 | case '[': | |
a0d0e21e | 418 | sv_setiv(sv,(I32)curcop->cop_arybase); |
79072805 LW |
419 | break; |
420 | case '|': | |
a0d0e21e | 421 | sv_setiv(sv, (IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); |
79072805 LW |
422 | break; |
423 | case ',': | |
424 | sv_setpvn(sv,ofs,ofslen); | |
425 | break; | |
426 | case '\\': | |
427 | sv_setpvn(sv,ors,orslen); | |
428 | break; | |
429 | case '#': | |
430 | sv_setpv(sv,ofmt); | |
431 | break; | |
432 | case '!': | |
433 | sv_setnv(sv,(double)errno); | |
2304df62 | 434 | sv_setpv(sv, errno ? Strerror(errno) : ""); |
79072805 LW |
435 | SvNOK_on(sv); /* what a wonderful hack! */ |
436 | break; | |
437 | case '<': | |
438 | sv_setiv(sv,(I32)uid); | |
439 | break; | |
440 | case '>': | |
441 | sv_setiv(sv,(I32)euid); | |
442 | break; | |
443 | case '(': | |
444 | s = buf; | |
445 | (void)sprintf(s,"%d",(int)gid); | |
446 | goto add_groups; | |
447 | case ')': | |
448 | s = buf; | |
449 | (void)sprintf(s,"%d",(int)egid); | |
450 | add_groups: | |
451 | while (*s) s++; | |
452 | #ifdef HAS_GETGROUPS | |
453 | #ifndef NGROUPS | |
454 | #define NGROUPS 32 | |
455 | #endif | |
456 | { | |
a0d0e21e | 457 | Groups_t gary[NGROUPS]; |
79072805 LW |
458 | |
459 | i = getgroups(NGROUPS,gary); | |
460 | while (--i >= 0) { | |
461 | (void)sprintf(s," %ld", (long)gary[i]); | |
462 | while (*s) s++; | |
463 | } | |
464 | } | |
465 | #endif | |
466 | sv_setpv(sv,buf); | |
467 | break; | |
468 | case '*': | |
469 | break; | |
470 | case '0': | |
471 | break; | |
472 | } | |
a0d0e21e | 473 | return 0; |
79072805 LW |
474 | } |
475 | ||
476 | int | |
477 | magic_getuvar(sv, mg) | |
478 | SV *sv; | |
479 | MAGIC *mg; | |
480 | { | |
481 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
482 | ||
483 | if (uf && uf->uf_val) | |
484 | (*uf->uf_val)(uf->uf_index, sv); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | int | |
489 | magic_setenv(sv,mg) | |
490 | SV* sv; | |
491 | MAGIC* mg; | |
492 | { | |
493 | register char *s; | |
a0d0e21e LW |
494 | STRLEN len; |
495 | I32 i; | |
496 | s = SvPV(sv,len); | |
79072805 | 497 | my_setenv(mg->mg_ptr,s); |
a0d0e21e LW |
498 | #ifdef DYNAMIC_ENV_FETCH |
499 | /* We just undefd an environment var. Is a replacement */ | |
500 | /* waiting in the wings? */ | |
501 | if (!len) { | |
502 | SV **envsvp; | |
503 | if (envsvp = hv_fetch(GvHVn(envgv),mg->mg_ptr,mg->mg_len,FALSE)) | |
504 | s = SvPV(*envsvp,len); | |
505 | } | |
506 | #endif | |
79072805 LW |
507 | /* And you'll never guess what the dog had */ |
508 | /* in its mouth... */ | |
463ee0b2 LW |
509 | if (tainting) { |
510 | if (s && strEQ(mg->mg_ptr,"PATH")) { | |
a0d0e21e | 511 | char *strend = s + len; |
463ee0b2 LW |
512 | |
513 | while (s < strend) { | |
514 | s = cpytill(tokenbuf,s,strend,':',&i); | |
515 | s++; | |
516 | if (*tokenbuf != '/' | |
a0d0e21e | 517 | || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) |
8990e307 | 518 | MgTAINTEDDIR_on(mg); |
463ee0b2 | 519 | } |
79072805 LW |
520 | } |
521 | } | |
79072805 LW |
522 | return 0; |
523 | } | |
524 | ||
525 | int | |
85e6fe83 LW |
526 | magic_clearenv(sv,mg) |
527 | SV* sv; | |
528 | MAGIC* mg; | |
529 | { | |
530 | my_setenv(mg->mg_ptr,Nullch); | |
531 | return 0; | |
532 | } | |
533 | ||
3d37d572 | 534 | #ifdef HAS_SIGACTION |
535 | /* set up reliable signal() clone */ | |
536 | ||
537 | typedef void (*Sigfunc) _((int)); | |
538 | ||
539 | static | |
540 | Sigfunc rsignal(signo,handler) | |
541 | int signo; | |
542 | Sigfunc handler; | |
543 | { | |
544 | struct sigaction act,oact; | |
545 | ||
546 | act.sa_handler = handler; | |
547 | sigemptyset(&act.sa_mask); | |
548 | act.sa_flags = 0; | |
549 | #ifdef SIGALRM | |
550 | if (signo == SIGALRM) { | |
551 | #else | |
552 | if (0) { | |
553 | #endif | |
554 | #ifdef SA_INTERRUPT | |
555 | act.sa_flags |= SA_INTERRUPT; /* SunOS */ | |
556 | #endif | |
557 | } else { | |
558 | #ifdef SA_RESTART | |
559 | act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */ | |
560 | #endif | |
561 | } | |
562 | if (sigaction(signo, &act, &oact) < 0) | |
563 | return(SIG_ERR); | |
564 | else | |
565 | return(oact.sa_handler); | |
566 | } | |
567 | ||
568 | #else | |
569 | ||
570 | /* ah well, so much for reliability */ | |
571 | ||
572 | #define rsignal(x,y) signal(x,y) | |
573 | ||
574 | #endif | |
575 | ||
576 | ||
85e6fe83 | 577 | int |
79072805 LW |
578 | magic_setsig(sv,mg) |
579 | SV* sv; | |
580 | MAGIC* mg; | |
581 | { | |
582 | register char *s; | |
583 | I32 i; | |
748a9306 | 584 | SV** svp; |
a0d0e21e | 585 | |
748a9306 LW |
586 | s = mg->mg_ptr; |
587 | if (*s == '_') { | |
588 | if (strEQ(s,"__DIE__")) | |
589 | svp = &diehook; | |
590 | else if (strEQ(s,"__WARN__")) | |
591 | svp = &warnhook; | |
592 | else if (strEQ(s,"__PARSE__")) | |
593 | svp = &parsehook; | |
594 | else | |
595 | croak("No such hook: %s", s); | |
596 | i = 0; | |
4633a7c4 LW |
597 | if (*svp) { |
598 | SvREFCNT_dec(*svp); | |
599 | *svp = 0; | |
600 | } | |
748a9306 LW |
601 | } |
602 | else { | |
603 | i = whichsig(s); /* ...no, a brick */ | |
604 | if (!i) { | |
605 | if (dowarn || strEQ(s,"ALARM")) | |
606 | warn("No such signal: SIG%s", s); | |
607 | return 0; | |
608 | } | |
609 | } | |
a0d0e21e | 610 | if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) { |
748a9306 | 611 | if (i) |
3d37d572 | 612 | (void)rsignal(i,sighandler); |
748a9306 LW |
613 | else |
614 | *svp = SvREFCNT_inc(sv); | |
a0d0e21e LW |
615 | return 0; |
616 | } | |
617 | s = SvPV_force(sv,na); | |
748a9306 LW |
618 | if (strEQ(s,"IGNORE")) { |
619 | if (i) | |
3d37d572 | 620 | (void)rsignal(i,SIG_IGN); |
748a9306 LW |
621 | else |
622 | *svp = 0; | |
623 | } | |
624 | else if (strEQ(s,"DEFAULT") || !*s) { | |
625 | if (i) | |
3d37d572 | 626 | (void)rsignal(i,SIG_DFL); |
748a9306 LW |
627 | else |
628 | *svp = 0; | |
629 | } | |
79072805 | 630 | else { |
2304df62 AD |
631 | if (!strchr(s,':') && !strchr(s,'\'')) { |
632 | sprintf(tokenbuf, "main::%s",s); | |
79072805 LW |
633 | sv_setpv(sv,tokenbuf); |
634 | } | |
748a9306 | 635 | if (i) |
3d37d572 | 636 | (void)rsignal(i,sighandler); |
748a9306 LW |
637 | else |
638 | *svp = SvREFCNT_inc(sv); | |
79072805 LW |
639 | } |
640 | return 0; | |
641 | } | |
642 | ||
643 | int | |
463ee0b2 | 644 | magic_setisa(sv,mg) |
79072805 LW |
645 | SV* sv; |
646 | MAGIC* mg; | |
647 | { | |
463ee0b2 LW |
648 | sub_generation++; |
649 | return 0; | |
650 | } | |
651 | ||
a0d0e21e LW |
652 | #ifdef OVERLOAD |
653 | ||
463ee0b2 | 654 | int |
a0d0e21e | 655 | magic_setamagic(sv,mg) |
463ee0b2 LW |
656 | SV* sv; |
657 | MAGIC* mg; | |
658 | { | |
a0d0e21e LW |
659 | /* HV_badAMAGIC_on(Sv_STASH(sv)); */ |
660 | amagic_generation++; | |
463ee0b2 | 661 | |
a0d0e21e LW |
662 | return 0; |
663 | } | |
664 | #endif /* OVERLOAD */ | |
463ee0b2 | 665 | |
a0d0e21e LW |
666 | static int |
667 | magic_methpack(sv,mg,meth) | |
668 | SV* sv; | |
669 | MAGIC* mg; | |
670 | char *meth; | |
671 | { | |
672 | dSP; | |
463ee0b2 | 673 | |
a0d0e21e LW |
674 | ENTER; |
675 | SAVETMPS; | |
676 | PUSHMARK(sp); | |
677 | EXTEND(sp, 2); | |
678 | PUSHs(mg->mg_obj); | |
463ee0b2 | 679 | if (mg->mg_ptr) |
a0d0e21e LW |
680 | PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len))); |
681 | else if (mg->mg_type == 'p') | |
682 | PUSHs(sv_2mortal(newSViv(mg->mg_len))); | |
463ee0b2 LW |
683 | PUTBACK; |
684 | ||
a0d0e21e LW |
685 | if (perl_call_method(meth, G_SCALAR)) |
686 | sv_setsv(sv, *stack_sp--); | |
463ee0b2 | 687 | |
a0d0e21e LW |
688 | FREETMPS; |
689 | LEAVE; | |
690 | return 0; | |
691 | } | |
463ee0b2 | 692 | |
a0d0e21e LW |
693 | int |
694 | magic_getpack(sv,mg) | |
695 | SV* sv; | |
696 | MAGIC* mg; | |
697 | { | |
698 | magic_methpack(sv,mg,"FETCH"); | |
699 | if (mg->mg_ptr) | |
700 | mg->mg_flags |= MGf_GSKIP; | |
463ee0b2 LW |
701 | return 0; |
702 | } | |
703 | ||
704 | int | |
705 | magic_setpack(sv,mg) | |
706 | SV* sv; | |
707 | MAGIC* mg; | |
708 | { | |
463ee0b2 | 709 | dSP; |
463ee0b2 | 710 | |
a0d0e21e LW |
711 | PUSHMARK(sp); |
712 | EXTEND(sp, 3); | |
713 | PUSHs(mg->mg_obj); | |
463ee0b2 | 714 | if (mg->mg_ptr) |
a0d0e21e LW |
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 LW |
718 | PUSHs(sv); |
719 | PUTBACK; | |
720 | ||
a0d0e21e | 721 | perl_call_method("STORE", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
722 | |
723 | return 0; | |
724 | } | |
725 | ||
726 | int | |
727 | magic_clearpack(sv,mg) | |
728 | SV* sv; | |
729 | MAGIC* mg; | |
730 | { | |
a0d0e21e LW |
731 | return magic_methpack(sv,mg,"DELETE"); |
732 | } | |
463ee0b2 | 733 | |
a0d0e21e LW |
734 | int magic_wipepack(sv,mg) |
735 | SV* sv; | |
736 | MAGIC* mg; | |
737 | { | |
738 | dSP; | |
463ee0b2 | 739 | |
a0d0e21e LW |
740 | PUSHMARK(sp); |
741 | XPUSHs(mg->mg_obj); | |
463ee0b2 | 742 | PUTBACK; |
463ee0b2 | 743 | |
a0d0e21e | 744 | perl_call_method("CLEAR", G_SCALAR|G_DISCARD); |
463ee0b2 LW |
745 | |
746 | return 0; | |
747 | } | |
748 | ||
749 | int | |
750 | magic_nextpack(sv,mg,key) | |
751 | SV* sv; | |
752 | MAGIC* mg; | |
753 | SV* key; | |
754 | { | |
463ee0b2 | 755 | dSP; |
a0d0e21e | 756 | char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY"; |
463ee0b2 LW |
757 | |
758 | ENTER; | |
a0d0e21e LW |
759 | SAVETMPS; |
760 | PUSHMARK(sp); | |
761 | EXTEND(sp, 2); | |
762 | PUSHs(mg->mg_obj); | |
463ee0b2 LW |
763 | if (SvOK(key)) |
764 | PUSHs(key); | |
765 | PUTBACK; | |
766 | ||
a0d0e21e LW |
767 | if (perl_call_method(meth, G_SCALAR)) |
768 | sv_setsv(key, *stack_sp--); | |
463ee0b2 | 769 | |
a0d0e21e LW |
770 | FREETMPS; |
771 | LEAVE; | |
79072805 LW |
772 | return 0; |
773 | } | |
774 | ||
775 | int | |
a0d0e21e LW |
776 | magic_existspack(sv,mg) |
777 | SV* sv; | |
778 | MAGIC* mg; | |
779 | { | |
780 | return magic_methpack(sv,mg,"EXISTS"); | |
781 | } | |
782 | ||
783 | int | |
79072805 LW |
784 | magic_setdbline(sv,mg) |
785 | SV* sv; | |
786 | MAGIC* mg; | |
787 | { | |
788 | OP *o; | |
789 | I32 i; | |
790 | GV* gv; | |
791 | SV** svp; | |
792 | ||
793 | gv = DBline; | |
794 | i = SvTRUE(sv); | |
795 | svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE); | |
8990e307 | 796 | if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) |
93a17b20 | 797 | o->op_private = i; |
79072805 LW |
798 | else |
799 | warn("Can't break at that line\n"); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | int | |
804 | magic_getarylen(sv,mg) | |
805 | SV* sv; | |
806 | MAGIC* mg; | |
807 | { | |
a0d0e21e | 808 | sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); |
79072805 LW |
809 | return 0; |
810 | } | |
811 | ||
812 | int | |
813 | magic_setarylen(sv,mg) | |
814 | SV* sv; | |
815 | MAGIC* mg; | |
816 | { | |
a0d0e21e LW |
817 | av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase); |
818 | return 0; | |
819 | } | |
820 | ||
821 | int | |
822 | magic_getpos(sv,mg) | |
823 | SV* sv; | |
824 | MAGIC* mg; | |
825 | { | |
826 | SV* lsv = LvTARG(sv); | |
827 | ||
828 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) { | |
829 | mg = mg_find(lsv, 'g'); | |
830 | if (mg && mg->mg_len >= 0) { | |
831 | sv_setiv(sv, mg->mg_len + curcop->cop_arybase); | |
832 | return 0; | |
833 | } | |
834 | } | |
835 | (void)SvOK_off(sv); | |
836 | return 0; | |
837 | } | |
838 | ||
839 | int | |
840 | magic_setpos(sv,mg) | |
841 | SV* sv; | |
842 | MAGIC* mg; | |
843 | { | |
844 | SV* lsv = LvTARG(sv); | |
845 | SSize_t pos; | |
846 | STRLEN len; | |
847 | ||
848 | mg = 0; | |
849 | ||
850 | if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) | |
851 | mg = mg_find(lsv, 'g'); | |
852 | if (!mg) { | |
853 | if (!SvOK(sv)) | |
854 | return 0; | |
855 | sv_magic(lsv, (SV*)0, 'g', Nullch, 0); | |
856 | mg = mg_find(lsv, 'g'); | |
857 | } | |
858 | else if (!SvOK(sv)) { | |
859 | mg->mg_len = -1; | |
860 | return 0; | |
861 | } | |
862 | len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv); | |
863 | ||
864 | pos = SvIV(sv) - curcop->cop_arybase; | |
865 | if (pos < 0) { | |
866 | pos += len; | |
867 | if (pos < 0) | |
868 | pos = 0; | |
869 | } | |
870 | else if (pos > len) | |
871 | pos = len; | |
872 | mg->mg_len = pos; | |
873 | ||
79072805 LW |
874 | return 0; |
875 | } | |
876 | ||
877 | int | |
878 | magic_getglob(sv,mg) | |
879 | SV* sv; | |
880 | MAGIC* mg; | |
881 | { | |
882 | gv_efullname(sv,((GV*)sv));/* a gv value, be nice */ | |
883 | return 0; | |
884 | } | |
885 | ||
886 | int | |
887 | magic_setglob(sv,mg) | |
888 | SV* sv; | |
889 | MAGIC* mg; | |
890 | { | |
891 | register char *s; | |
892 | GV* gv; | |
893 | ||
894 | if (!SvOK(sv)) | |
895 | return 0; | |
463ee0b2 | 896 | s = SvPV(sv, na); |
79072805 LW |
897 | if (*s == '*' && s[1]) |
898 | s++; | |
85e6fe83 | 899 | gv = gv_fetchpv(s,TRUE, SVt_PVGV); |
79072805 LW |
900 | if (sv == (SV*)gv) |
901 | return 0; | |
902 | if (GvGP(sv)) | |
903 | gp_free(sv); | |
904 | GvGP(sv) = gp_ref(GvGP(gv)); | |
905 | if (!GvAV(gv)) | |
906 | gv_AVadd(gv); | |
907 | if (!GvHV(gv)) | |
908 | gv_HVadd(gv); | |
a0d0e21e LW |
909 | if (!GvIOp(gv)) |
910 | GvIOp(gv) = newIO(); | |
79072805 LW |
911 | return 0; |
912 | } | |
913 | ||
914 | int | |
915 | magic_setsubstr(sv,mg) | |
916 | SV* sv; | |
917 | MAGIC* mg; | |
918 | { | |
8990e307 LW |
919 | STRLEN len; |
920 | char *tmps = SvPV(sv,len); | |
921 | sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); | |
79072805 LW |
922 | return 0; |
923 | } | |
924 | ||
925 | int | |
463ee0b2 LW |
926 | magic_gettaint(sv,mg) |
927 | SV* sv; | |
928 | MAGIC* mg; | |
929 | { | |
748a9306 LW |
930 | if (mg->mg_len & 1) |
931 | tainted = TRUE; | |
932 | else if (mg->mg_len & 2 && mg->mg_obj == sv) /* kludge */ | |
933 | tainted = TRUE; | |
463ee0b2 LW |
934 | return 0; |
935 | } | |
936 | ||
937 | int | |
938 | magic_settaint(sv,mg) | |
939 | SV* sv; | |
940 | MAGIC* mg; | |
941 | { | |
748a9306 LW |
942 | if (localizing) { |
943 | if (localizing == 1) | |
944 | mg->mg_len <<= 1; | |
945 | else | |
946 | mg->mg_len >>= 1; | |
a0d0e21e | 947 | } |
748a9306 LW |
948 | else if (tainted) |
949 | mg->mg_len |= 1; | |
950 | else | |
951 | mg->mg_len &= ~1; | |
463ee0b2 LW |
952 | return 0; |
953 | } | |
954 | ||
955 | int | |
79072805 LW |
956 | magic_setvec(sv,mg) |
957 | SV* sv; | |
958 | MAGIC* mg; | |
959 | { | |
960 | do_vecset(sv); /* XXX slurp this routine */ | |
961 | return 0; | |
962 | } | |
963 | ||
964 | int | |
93a17b20 LW |
965 | magic_setmglob(sv,mg) |
966 | SV* sv; | |
967 | MAGIC* mg; | |
968 | { | |
a0d0e21e | 969 | mg->mg_len = -1; |
93a17b20 LW |
970 | return 0; |
971 | } | |
972 | ||
973 | int | |
79072805 LW |
974 | magic_setbm(sv,mg) |
975 | SV* sv; | |
976 | MAGIC* mg; | |
977 | { | |
463ee0b2 | 978 | sv_unmagic(sv, 'B'); |
79072805 LW |
979 | SvVALID_off(sv); |
980 | return 0; | |
981 | } | |
982 | ||
983 | int | |
984 | magic_setuvar(sv,mg) | |
985 | SV* sv; | |
986 | MAGIC* mg; | |
987 | { | |
988 | struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; | |
989 | ||
990 | if (uf && uf->uf_set) | |
991 | (*uf->uf_set)(uf->uf_index, sv); | |
992 | return 0; | |
993 | } | |
994 | ||
995 | int | |
996 | magic_set(sv,mg) | |
997 | SV* sv; | |
998 | MAGIC* mg; | |
999 | { | |
1000 | register char *s; | |
1001 | I32 i; | |
8990e307 | 1002 | STRLEN len; |
79072805 | 1003 | switch (*mg->mg_ptr) { |
748a9306 LW |
1004 | case '\001': /* ^A */ |
1005 | sv_setsv(bodytarget, sv); | |
1006 | break; | |
79072805 | 1007 | case '\004': /* ^D */ |
8990e307 | 1008 | debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000; |
79072805 LW |
1009 | DEBUG_x(dump_all()); |
1010 | break; | |
1011 | case '\006': /* ^F */ | |
463ee0b2 | 1012 | maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 | 1013 | break; |
a0d0e21e LW |
1014 | case '\010': /* ^H */ |
1015 | hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); | |
1016 | break; | |
79072805 LW |
1017 | case '\t': /* ^I */ |
1018 | if (inplace) | |
1019 | Safefree(inplace); | |
1020 | if (SvOK(sv)) | |
a0d0e21e | 1021 | inplace = savepv(SvPV(sv,na)); |
79072805 LW |
1022 | else |
1023 | inplace = Nullch; | |
1024 | break; | |
1025 | case '\020': /* ^P */ | |
463ee0b2 | 1026 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1027 | if (i != perldb) { |
1028 | if (perldb) | |
1029 | oldlastpm = curpm; | |
1030 | else | |
1031 | curpm = oldlastpm; | |
1032 | } | |
1033 | perldb = i; | |
1034 | break; | |
1035 | case '\024': /* ^T */ | |
85e6fe83 | 1036 | basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1037 | break; |
1038 | case '\027': /* ^W */ | |
463ee0b2 | 1039 | dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1040 | break; |
1041 | case '.': | |
748a9306 LW |
1042 | if (localizing) { |
1043 | if (localizing == 1) | |
1044 | save_sptr((SV**)&last_in_gv); | |
1045 | } | |
2304df62 | 1046 | else if (SvOK(sv)) |
a0d0e21e | 1047 | IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); |
79072805 LW |
1048 | break; |
1049 | case '^': | |
a0d0e21e LW |
1050 | Safefree(IoTOP_NAME(GvIOp(defoutgv))); |
1051 | IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1052 | IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1053 | break; |
1054 | case '~': | |
a0d0e21e LW |
1055 | Safefree(IoFMT_NAME(GvIOp(defoutgv))); |
1056 | IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); | |
1057 | IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); | |
79072805 LW |
1058 | break; |
1059 | case '=': | |
a0d0e21e | 1060 | IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1061 | break; |
1062 | case '-': | |
a0d0e21e LW |
1063 | IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
1064 | if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) | |
1065 | IoLINES_LEFT(GvIOp(defoutgv)) = 0L; | |
79072805 LW |
1066 | break; |
1067 | case '%': | |
a0d0e21e | 1068 | IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1069 | break; |
1070 | case '|': | |
a0d0e21e | 1071 | IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH; |
463ee0b2 | 1072 | if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) { |
a0d0e21e | 1073 | IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH; |
79072805 LW |
1074 | } |
1075 | break; | |
1076 | case '*': | |
463ee0b2 | 1077 | i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1078 | multiline = (i != 0); |
1079 | break; | |
1080 | case '/': | |
a0d0e21e LW |
1081 | if (SvOK(sv)) { |
1082 | nrs = rs = SvPV_force(sv,rslen); | |
8990e307 | 1083 | nrslen = rslen; |
79072805 | 1084 | if (rspara = !rslen) { |
93a17b20 LW |
1085 | nrs = rs = "\n\n"; |
1086 | nrslen = rslen = 2; | |
79072805 | 1087 | } |
93a17b20 | 1088 | nrschar = rschar = rs[rslen - 1]; |
79072805 LW |
1089 | } |
1090 | else { | |
93a17b20 LW |
1091 | nrschar = rschar = 0777; /* fake a non-existent char */ |
1092 | nrslen = rslen = 1; | |
79072805 LW |
1093 | } |
1094 | break; | |
1095 | case '\\': | |
1096 | if (ors) | |
1097 | Safefree(ors); | |
a0d0e21e | 1098 | ors = savepv(SvPV(sv,orslen)); |
79072805 LW |
1099 | break; |
1100 | case ',': | |
1101 | if (ofs) | |
1102 | Safefree(ofs); | |
a0d0e21e | 1103 | ofs = savepv(SvPV(sv, ofslen)); |
79072805 LW |
1104 | break; |
1105 | case '#': | |
1106 | if (ofmt) | |
1107 | Safefree(ofmt); | |
a0d0e21e | 1108 | ofmt = savepv(SvPV(sv,na)); |
79072805 LW |
1109 | break; |
1110 | case '[': | |
a0d0e21e | 1111 | compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1112 | break; |
1113 | case '?': | |
748a9306 | 1114 | statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); |
79072805 LW |
1115 | break; |
1116 | case '!': | |
748a9306 | 1117 | SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),SS$_ABORT); /* will anyone ever use this? */ |
79072805 LW |
1118 | break; |
1119 | case '<': | |
463ee0b2 | 1120 | uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1121 | if (delaymagic) { |
1122 | delaymagic |= DM_RUID; | |
1123 | break; /* don't do magic till later */ | |
1124 | } | |
1125 | #ifdef HAS_SETRUID | |
85e6fe83 | 1126 | (void)setruid((Uid_t)uid); |
79072805 LW |
1127 | #else |
1128 | #ifdef HAS_SETREUID | |
85e6fe83 | 1129 | (void)setreuid((Uid_t)uid, (Uid_t)-1); |
748a9306 | 1130 | #else |
85e6fe83 LW |
1131 | #ifdef HAS_SETRESUID |
1132 | (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); | |
79072805 LW |
1133 | #else |
1134 | if (uid == euid) /* special case $< = $> */ | |
1135 | (void)setuid(uid); | |
a0d0e21e LW |
1136 | else { |
1137 | uid = (I32)getuid(); | |
463ee0b2 | 1138 | croak("setruid() not implemented"); |
a0d0e21e | 1139 | } |
79072805 LW |
1140 | #endif |
1141 | #endif | |
85e6fe83 | 1142 | #endif |
748a9306 | 1143 | uid = (I32)getuid(); |
4633a7c4 | 1144 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1145 | break; |
1146 | case '>': | |
463ee0b2 | 1147 | euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1148 | if (delaymagic) { |
1149 | delaymagic |= DM_EUID; | |
1150 | break; /* don't do magic till later */ | |
1151 | } | |
1152 | #ifdef HAS_SETEUID | |
85e6fe83 | 1153 | (void)seteuid((Uid_t)euid); |
79072805 LW |
1154 | #else |
1155 | #ifdef HAS_SETREUID | |
85e6fe83 LW |
1156 | (void)setreuid((Uid_t)-1, (Uid_t)euid); |
1157 | #else | |
1158 | #ifdef HAS_SETRESUID | |
1159 | (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); | |
79072805 LW |
1160 | #else |
1161 | if (euid == uid) /* special case $> = $< */ | |
1162 | setuid(euid); | |
a0d0e21e LW |
1163 | else { |
1164 | euid = (I32)geteuid(); | |
463ee0b2 | 1165 | croak("seteuid() not implemented"); |
a0d0e21e | 1166 | } |
79072805 LW |
1167 | #endif |
1168 | #endif | |
85e6fe83 | 1169 | #endif |
79072805 | 1170 | euid = (I32)geteuid(); |
4633a7c4 | 1171 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1172 | break; |
1173 | case '(': | |
463ee0b2 | 1174 | gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1175 | if (delaymagic) { |
1176 | delaymagic |= DM_RGID; | |
1177 | break; /* don't do magic till later */ | |
1178 | } | |
1179 | #ifdef HAS_SETRGID | |
85e6fe83 | 1180 | (void)setrgid((Gid_t)gid); |
79072805 LW |
1181 | #else |
1182 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1183 | (void)setregid((Gid_t)gid, (Gid_t)-1); |
1184 | #else | |
1185 | #ifdef HAS_SETRESGID | |
1186 | (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); | |
79072805 LW |
1187 | #else |
1188 | if (gid == egid) /* special case $( = $) */ | |
1189 | (void)setgid(gid); | |
748a9306 LW |
1190 | else { |
1191 | gid = (I32)getgid(); | |
463ee0b2 | 1192 | croak("setrgid() not implemented"); |
748a9306 | 1193 | } |
79072805 LW |
1194 | #endif |
1195 | #endif | |
85e6fe83 | 1196 | #endif |
79072805 | 1197 | gid = (I32)getgid(); |
4633a7c4 | 1198 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1199 | break; |
1200 | case ')': | |
463ee0b2 | 1201 | egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); |
79072805 LW |
1202 | if (delaymagic) { |
1203 | delaymagic |= DM_EGID; | |
1204 | break; /* don't do magic till later */ | |
1205 | } | |
1206 | #ifdef HAS_SETEGID | |
85e6fe83 | 1207 | (void)setegid((Gid_t)egid); |
79072805 LW |
1208 | #else |
1209 | #ifdef HAS_SETREGID | |
85e6fe83 LW |
1210 | (void)setregid((Gid_t)-1, (Gid_t)egid); |
1211 | #else | |
1212 | #ifdef HAS_SETRESGID | |
1213 | (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); | |
79072805 LW |
1214 | #else |
1215 | if (egid == gid) /* special case $) = $( */ | |
1216 | (void)setgid(egid); | |
748a9306 LW |
1217 | else { |
1218 | egid = (I32)getegid(); | |
463ee0b2 | 1219 | croak("setegid() not implemented"); |
748a9306 | 1220 | } |
79072805 LW |
1221 | #endif |
1222 | #endif | |
85e6fe83 | 1223 | #endif |
79072805 | 1224 | egid = (I32)getegid(); |
4633a7c4 | 1225 | tainting |= (uid && (euid != uid || egid != gid)); |
79072805 LW |
1226 | break; |
1227 | case ':': | |
a0d0e21e | 1228 | chopset = SvPV_force(sv,na); |
79072805 LW |
1229 | break; |
1230 | case '0': | |
1231 | if (!origalen) { | |
1232 | s = origargv[0]; | |
1233 | s += strlen(s); | |
1234 | /* See if all the arguments are contiguous in memory */ | |
1235 | for (i = 1; i < origargc; i++) { | |
1236 | if (origargv[i] == s + 1) | |
1237 | s += strlen(++s); /* this one is ok too */ | |
1238 | } | |
1239 | if (origenviron[0] == s + 1) { /* can grab env area too? */ | |
1240 | my_setenv("NoNeSuCh", Nullch); | |
1241 | /* force copy of environment */ | |
1242 | for (i = 0; origenviron[i]; i++) | |
1243 | if (origenviron[i] == s + 1) | |
1244 | s += strlen(++s); | |
1245 | } | |
1246 | origalen = s - origargv[0]; | |
1247 | } | |
a0d0e21e | 1248 | s = SvPV_force(sv,len); |
8990e307 | 1249 | i = len; |
79072805 LW |
1250 | if (i >= origalen) { |
1251 | i = origalen; | |
1252 | SvCUR_set(sv, i); | |
1253 | *SvEND(sv) = '\0'; | |
1254 | Copy(s, origargv[0], i, char); | |
1255 | } | |
1256 | else { | |
1257 | Copy(s, origargv[0], i, char); | |
1258 | s = origargv[0]+i; | |
1259 | *s++ = '\0'; | |
1260 | while (++i < origalen) | |
8990e307 LW |
1261 | *s++ = ' '; |
1262 | s = origargv[0]+i; | |
ed6116ce | 1263 | for (i = 1; i < origargc; i++) |
8990e307 | 1264 | origargv[i] = Nullch; |
79072805 LW |
1265 | } |
1266 | break; | |
1267 | } | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | I32 | |
1272 | whichsig(sig) | |
1273 | char *sig; | |
1274 | { | |
1275 | register char **sigv; | |
1276 | ||
1277 | for (sigv = sig_name+1; *sigv; sigv++) | |
1278 | if (strEQ(sig,*sigv)) | |
8e07c86e | 1279 | return sig_num[sigv - sig_name]; |
79072805 LW |
1280 | #ifdef SIGCLD |
1281 | if (strEQ(sig,"CHLD")) | |
1282 | return SIGCLD; | |
1283 | #endif | |
1284 | #ifdef SIGCHLD | |
1285 | if (strEQ(sig,"CLD")) | |
1286 | return SIGCHLD; | |
1287 | #endif | |
1288 | return 0; | |
1289 | } | |
1290 | ||
ecfc5424 | 1291 | Signal_t |
79072805 | 1292 | sighandler(sig) |
a0d0e21e | 1293 | int sig; |
79072805 LW |
1294 | { |
1295 | dSP; | |
1296 | GV *gv; | |
a0d0e21e | 1297 | HV *st; |
79072805 LW |
1298 | SV *sv; |
1299 | CV *cv; | |
79072805 | 1300 | AV *oldstack; |
8e07c86e | 1301 | char *signame; |
79072805 LW |
1302 | |
1303 | #ifdef OS2 /* or anybody else who requires SIG_ACK */ | |
1304 | signal(sig, SIG_ACK); | |
1305 | #endif | |
1306 | ||
4633a7c4 | 1307 | signame = sig_name[sig]; |
8e07c86e | 1308 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),signame,strlen(signame), |
a0d0e21e LW |
1309 | TRUE), |
1310 | &st, &gv, TRUE); | |
1311 | if (!cv || !CvROOT(cv) && | |
8e07c86e | 1312 | *signame == 'C' && instr(signame,"LD")) { |
a0d0e21e | 1313 | |
8e07c86e | 1314 | if (signame[1] == 'H') |
a0d0e21e LW |
1315 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE), |
1316 | &st, &gv, TRUE); | |
79072805 | 1317 | else |
a0d0e21e LW |
1318 | cv = sv_2cv(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE), |
1319 | &st, &gv, TRUE); | |
1320 | /* gag */ | |
79072805 | 1321 | } |
a0d0e21e | 1322 | if (!cv || !CvROOT(cv)) { |
79072805 LW |
1323 | if (dowarn) |
1324 | warn("SIG%s handler \"%s\" not defined.\n", | |
8e07c86e | 1325 | signame, GvENAME(gv) ); |
79072805 LW |
1326 | return; |
1327 | } | |
1328 | ||
1329 | oldstack = stack; | |
a0d0e21e LW |
1330 | if (stack != signalstack) |
1331 | AvFILL(signalstack) = 0; | |
79072805 LW |
1332 | SWITCHSTACK(stack, signalstack); |
1333 | ||
8990e307 | 1334 | sv = sv_newmortal(); |
8e07c86e | 1335 | sv_setpv(sv,signame); |
a0d0e21e | 1336 | PUSHMARK(sp); |
79072805 | 1337 | PUSHs(sv); |
79072805 | 1338 | PUTBACK; |
a0d0e21e LW |
1339 | |
1340 | perl_call_sv((SV*)cv, G_DISCARD); | |
79072805 LW |
1341 | |
1342 | SWITCHSTACK(signalstack, oldstack); | |
79072805 LW |
1343 | |
1344 | return; | |
1345 | } |