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