98db6da3 |
1 | /* |
2 | * query.c |
3 | * - overall query management (allocation, completion) |
4 | * - per-query memory management |
5 | * - query submission and cancellation (user-visible and internal) |
6 | */ |
7 | /* |
a79ac5ba |
8 | * This file is |
9 | * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk> |
10 | * |
11 | * It is part of adns, which is |
12 | * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk> |
13 | * Copyright (C) 1999 Tony Finch <dot@dotat.at> |
98db6da3 |
14 | * |
15 | * This program is free software; you can redistribute it and/or modify |
16 | * it under the terms of the GNU General Public License as published by |
17 | * the Free Software Foundation; either version 2, or (at your option) |
18 | * any later version. |
19 | * |
20 | * This program is distributed in the hope that it will be useful, |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | * GNU General Public License for more details. |
24 | * |
25 | * You should have received a copy of the GNU General Public License |
26 | * along with this program; if not, write to the Free Software Foundation, |
27 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
28 | */ |
d05cc330 |
29 | |
48cb0b4b |
30 | #include "internal.h" |
6f17710a |
31 | |
98db6da3 |
32 | #include <stdlib.h> |
33 | #include <unistd.h> |
34 | #include <errno.h> |
6f17710a |
35 | |
98db6da3 |
36 | #include <sys/time.h> |
6f17710a |
37 | |
98db6da3 |
38 | #include "internal.h" |
96e79df5 |
39 | |
7e6a84a1 |
40 | static adns_query query_alloc(adns_state ads, const typeinfo *typei, |
41 | adns_queryflags flags, struct timeval now) { |
42 | /* Allocate a virgin query and return it. */ |
98db6da3 |
43 | adns_query qu; |
7e6a84a1 |
44 | |
45 | qu= malloc(sizeof(*qu)); if (!qu) return 0; |
46 | qu->answer= malloc(sizeof(*qu->answer)); if (!qu->answer) { free(qu); return 0; } |
47 | |
11c8bf9b |
48 | qu->ads= ads; |
24d52b13 |
49 | qu->state= query_tosend; |
98db6da3 |
50 | qu->back= qu->next= qu->parent= 0; |
51 | LIST_INIT(qu->children); |
7e6a84a1 |
52 | LINK_INIT(qu->siblings); |
bc01473e |
53 | LIST_INIT(qu->allocations); |
98db6da3 |
54 | qu->interim_allocd= 0; |
1be24aef |
55 | qu->preserved_allocd= 0; |
11c8bf9b |
56 | qu->final_allocspace= 0; |
98db6da3 |
57 | |
11c8bf9b |
58 | qu->typei= typei; |
7e6a84a1 |
59 | qu->query_dgram= 0; |
60 | qu->query_dglen= 0; |
98db6da3 |
61 | adns__vbuf_init(&qu->vb); |
62 | |
63 | qu->cname_dgram= 0; |
64 | qu->cname_dglen= qu->cname_begin= 0; |
7e6a84a1 |
65 | |
66 | adns__vbuf_init(&qu->search_vb); |
67 | qu->search_origlen= qu->search_pos= qu->search_doneabs= 0; |
68 | |
69 | qu->id= 0; |
98db6da3 |
70 | qu->flags= flags; |
d0a057ac |
71 | qu->retries= 0; |
98db6da3 |
72 | qu->udpnextserver= 0; |
d0a057ac |
73 | qu->udpsent= 0; |
98db6da3 |
74 | timerclear(&qu->timeout); |
2c7b101b |
75 | qu->expires= now.tv_sec + MAXTTLBELIEVE; |
98db6da3 |
76 | |
7e6a84a1 |
77 | memset(&qu->ctx,0,sizeof(qu->ctx)); |
78 | |
98db6da3 |
79 | qu->answer->status= adns_s_ok; |
b2988d3e |
80 | qu->answer->cname= qu->answer->owner= 0; |
11c8bf9b |
81 | qu->answer->type= typei->type; |
7e6a84a1 |
82 | qu->answer->expires= -1; |
98db6da3 |
83 | qu->answer->nrrs= 0; |
763d28b9 |
84 | qu->answer->rrs.untyped= 0; |
11c8bf9b |
85 | qu->answer->rrsz= typei->rrsz; |
96e79df5 |
86 | |
7e6a84a1 |
87 | return qu; |
88 | } |
89 | |
90 | static void query_submit(adns_state ads, adns_query qu, |
91 | const typeinfo *typei, vbuf *qumsg_vb, int id, |
92 | adns_queryflags flags, struct timeval now) { |
93 | /* Fills in the query message in for a previously-allocated query, |
fc86e61f |
94 | * and submits it. Cannot fail. Takes over the memory for qumsg_vb. |
7e6a84a1 |
95 | */ |
96 | |
98db6da3 |
97 | qu->vb= *qumsg_vb; |
98 | adns__vbuf_init(qumsg_vb); |
7e6a84a1 |
99 | |
100 | qu->query_dgram= malloc(qu->vb.used); |
101 | if (!qu->query_dgram) { adns__query_fail(qu,adns_s_nomemory); return; } |
102 | |
103 | qu->id= id; |
104 | qu->query_dglen= qu->vb.used; |
105 | memcpy(qu->query_dgram,qu->vb.buf,qu->vb.used); |
98db6da3 |
106 | |
24d52b13 |
107 | adns__query_send(qu,now); |
7e6a84a1 |
108 | } |
109 | |
110 | adns_status adns__internal_submit(adns_state ads, adns_query *query_r, |
111 | const typeinfo *typei, vbuf *qumsg_vb, int id, |
112 | adns_queryflags flags, struct timeval now, |
113 | const qcontext *ctx) { |
114 | adns_query qu; |
115 | |
116 | qu= query_alloc(ads,typei,flags,now); |
117 | if (!qu) { adns__vbuf_free(qumsg_vb); return adns_s_nomemory; } |
118 | *query_r= qu; |
98db6da3 |
119 | |
7e6a84a1 |
120 | memcpy(&qu->ctx,ctx,sizeof(qu->ctx)); |
121 | query_submit(ads,qu, typei,qumsg_vb,id,flags,now); |
122 | |
11c8bf9b |
123 | return adns_s_ok; |
7e6a84a1 |
124 | } |
125 | |
126 | static void query_simple(adns_state ads, adns_query qu, |
127 | const char *owner, int ol, |
128 | const typeinfo *typei, adns_queryflags flags, |
129 | struct timeval now) { |
130 | vbuf vb; |
131 | int id; |
132 | adns_status stat; |
98db6da3 |
133 | |
fc86e61f |
134 | vb= qu->vb; |
7e6a84a1 |
135 | |
136 | stat= adns__mkquery(ads,&vb,&id, owner,ol, typei,flags); |
137 | if (stat) { adns__query_fail(qu,stat); return; } |
138 | |
139 | query_submit(ads,qu, typei,&vb,id, flags,now); |
140 | } |
141 | |
142 | void adns__search_next(adns_state ads, adns_query qu, struct timeval now) { |
143 | const char *nextentry; |
144 | adns_status stat; |
145 | |
146 | if (qu->search_doneabs<0) { |
147 | nextentry= 0; |
148 | qu->search_doneabs= 1; |
149 | } else { |
150 | if (qu->search_pos >= ads->nsearchlist) { |
151 | if (qu->search_doneabs) { |
152 | stat= adns_s_nxdomain; goto x_fail; |
153 | return; |
154 | } else { |
155 | nextentry= 0; |
156 | qu->search_doneabs= 1; |
157 | } |
158 | } else { |
159 | nextentry= ads->searchlist[qu->search_pos++]; |
160 | } |
161 | } |
162 | |
a5da6822 |
163 | qu->search_vb.used= qu->search_origlen; |
7e6a84a1 |
164 | if (nextentry) { |
165 | if (!adns__vbuf_append(&qu->search_vb,".",1) || |
166 | !adns__vbuf_appendstr(&qu->search_vb,nextentry)) { |
167 | stat= adns_s_nomemory; goto x_fail; |
7e6a84a1 |
168 | } |
169 | } |
170 | |
171 | free(qu->query_dgram); |
172 | qu->query_dgram= 0; qu->query_dglen= 0; |
173 | |
174 | query_simple(ads,qu, qu->search_vb.buf, qu->search_vb.used, qu->typei, qu->flags, now); |
175 | return; |
176 | |
177 | x_fail: |
178 | adns__query_fail(qu,stat); |
48cb0b4b |
179 | } |
180 | |
b2988d3e |
181 | static int save_owner(adns_query qu, const char *owner, int ol) { |
182 | /* Returns 1 if OK, otherwise there was no memory. */ |
183 | adns_answer *ans; |
184 | |
185 | ans= qu->answer; |
186 | assert(!ans->owner); |
187 | |
1be24aef |
188 | ans->owner= adns__alloc_preserved(qu,ol+1); if (!ans->owner) return 0; |
b2988d3e |
189 | |
190 | memcpy(ans->owner,owner,ol); |
191 | ans->owner[ol]= 0; |
192 | return 1; |
193 | } |
194 | |
98db6da3 |
195 | int adns_submit(adns_state ads, |
196 | const char *owner, |
197 | adns_rrtype type, |
edb95764 |
198 | adns_queryflags flags, |
98db6da3 |
199 | void *context, |
200 | adns_query *query_r) { |
7e6a84a1 |
201 | int r, ol, ndots; |
11c8bf9b |
202 | adns_status stat; |
203 | const typeinfo *typei; |
204 | struct timeval now; |
7e6a84a1 |
205 | adns_query qu; |
206 | const char *p; |
98db6da3 |
207 | |
2ac463bf |
208 | adns__consistency(ads,0,cc_entex); |
1389dc72 |
209 | |
11c8bf9b |
210 | typei= adns__findtype(type); |
125de2a9 |
211 | if (!typei) return ENOSYS; |
98db6da3 |
212 | |
7e6a84a1 |
213 | r= gettimeofday(&now,0); if (r) goto x_errno; |
214 | qu= query_alloc(ads,typei,flags,now); if (!qu) goto x_errno; |
215 | |
216 | qu->ctx.ext= context; |
217 | qu->ctx.callback= 0; |
218 | memset(&qu->ctx.info,0,sizeof(qu->ctx.info)); |
98db6da3 |
219 | |
a5da6822 |
220 | *query_r= qu; |
221 | |
98db6da3 |
222 | ol= strlen(owner); |
7e6a84a1 |
223 | if (!ol) { stat= adns_s_querydomaininvalid; goto x_adnsfail; } |
224 | if (ol>DNS_MAXDOMAIN+1) { stat= adns_s_querydomaintoolong; goto x_adnsfail; } |
98db6da3 |
225 | |
7683abe2 |
226 | if (ol>=1 && owner[ol-1]=='.' && (ol<2 || owner[ol-2]!='\\')) { |
227 | flags &= ~adns_qf_search; |
30c317a4 |
228 | qu->flags= flags; |
7683abe2 |
229 | ol--; |
230 | } |
98db6da3 |
231 | |
7e6a84a1 |
232 | if (flags & adns_qf_search) { |
233 | r= adns__vbuf_append(&qu->search_vb,owner,ol); |
234 | if (!r) { stat= adns_s_nomemory; goto x_adnsfail; } |
235 | |
236 | for (ndots=0, p=owner; (p= strchr(p,'.')); p++, ndots++); |
237 | qu->search_doneabs= (ndots >= ads->searchndots) ? -1 : 0; |
7e6a84a1 |
238 | qu->search_origlen= ol; |
7e6a84a1 |
239 | adns__search_next(ads,qu,now); |
a5da6822 |
240 | } else { |
b2988d3e |
241 | if (flags & adns_qf_owner) { |
242 | if (!save_owner(qu,owner,ol)) { stat= adns_s_nomemory; goto x_adnsfail; } |
243 | } |
a5da6822 |
244 | query_simple(ads,qu, owner,ol, typei,flags, now); |
7e6a84a1 |
245 | } |
ab898cf4 |
246 | adns__autosys(ads,now); |
2ac463bf |
247 | adns__consistency(ads,qu,cc_entex); |
7e6a84a1 |
248 | return 0; |
249 | |
250 | x_adnsfail: |
251 | adns__query_fail(qu,stat); |
2ac463bf |
252 | adns__consistency(ads,qu,cc_entex); |
7e6a84a1 |
253 | return 0; |
254 | |
255 | x_errno: |
256 | r= errno; |
257 | assert(r); |
2ac463bf |
258 | adns__consistency(ads,0,cc_entex); |
7e6a84a1 |
259 | return r; |
96e79df5 |
260 | } |
261 | |
5e6342f0 |
262 | int adns_submit_reverse(adns_state ads, |
263 | const struct sockaddr *addr, |
264 | adns_rrtype type, |
edb95764 |
265 | adns_queryflags flags, |
5e6342f0 |
266 | void *context, |
267 | adns_query *query_r) { |
268 | const unsigned char *iaddr; |
269 | char buf[30]; |
270 | |
271 | if (type != adns_r_ptr && type != adns_r_ptr_raw) return EINVAL; |
272 | flags &= ~adns_qf_search; |
273 | |
274 | if (addr->sa_family != AF_INET) return ENOSYS; |
275 | iaddr= (const unsigned char*) &(((const struct sockaddr_in*)addr) -> sin_addr); |
276 | |
277 | sprintf(buf, "%d.%d.%d.%d.in-addr.arpa", |
278 | iaddr[3], iaddr[2], iaddr[1], iaddr[0]); |
279 | |
280 | return adns_submit(ads,buf,type,flags,context,query_r); |
281 | } |
282 | |
98db6da3 |
283 | int adns_synchronous(adns_state ads, |
284 | const char *owner, |
285 | adns_rrtype type, |
edb95764 |
286 | adns_queryflags flags, |
98db6da3 |
287 | adns_answer **answer_r) { |
288 | adns_query qu; |
289 | int r; |
290 | |
291 | r= adns_submit(ads,owner,type,flags,0,&qu); |
292 | if (r) return r; |
48cb0b4b |
293 | |
f318f883 |
294 | r= adns_wait(ads,&qu,answer_r,0); |
11c8bf9b |
295 | if (r) adns_cancel(qu); |
96e79df5 |
296 | |
f318f883 |
297 | return r; |
98db6da3 |
298 | } |
299 | |
c9afe7bb |
300 | static void *alloc_common(adns_query qu, size_t sz) { |
98db6da3 |
301 | allocnode *an; |
302 | |
f47cdeec |
303 | if (!sz) return qu; /* Any old pointer will do */ |
98db6da3 |
304 | assert(!qu->final_allocspace); |
98db6da3 |
305 | an= malloc(MEM_ROUND(MEM_ROUND(sizeof(*an)) + sz)); |
f2ad23ee |
306 | if (!an) return 0; |
bc01473e |
307 | LIST_LINK_TAIL(qu->allocations,an); |
98db6da3 |
308 | return (byte*)an + MEM_ROUND(sizeof(*an)); |
309 | } |
48cb0b4b |
310 | |
c9afe7bb |
311 | void *adns__alloc_interim(adns_query qu, size_t sz) { |
1be24aef |
312 | void *rv; |
313 | |
c9afe7bb |
314 | sz= MEM_ROUND(sz); |
1be24aef |
315 | rv= alloc_common(qu,sz); |
316 | if (!rv) return 0; |
c9afe7bb |
317 | qu->interim_allocd += sz; |
1be24aef |
318 | return rv; |
319 | } |
320 | |
321 | void *adns__alloc_preserved(adns_query qu, size_t sz) { |
322 | void *rv; |
323 | |
324 | sz= MEM_ROUND(sz); |
325 | rv= adns__alloc_interim(qu,sz); |
326 | if (!rv) return 0; |
327 | qu->preserved_allocd += sz; |
328 | return rv; |
c9afe7bb |
329 | } |
330 | |
331 | void *adns__alloc_mine(adns_query qu, size_t sz) { |
332 | return alloc_common(qu,MEM_ROUND(sz)); |
333 | } |
334 | |
bc01473e |
335 | void adns__transfer_interim(adns_query from, adns_query to, void *block, size_t sz) { |
336 | allocnode *an; |
337 | |
338 | if (!block) return; |
339 | an= (void*)((byte*)block - MEM_ROUND(sizeof(*an))); |
340 | |
341 | assert(!to->final_allocspace); |
342 | assert(!from->final_allocspace); |
343 | |
344 | LIST_UNLINK(from->allocations,an); |
345 | LIST_LINK_TAIL(to->allocations,an); |
346 | |
347 | from->interim_allocd -= sz; |
348 | to->interim_allocd += sz; |
2c7b101b |
349 | |
350 | if (to->expires > from->expires) to->expires= from->expires; |
bc01473e |
351 | } |
352 | |
98db6da3 |
353 | void *adns__alloc_final(adns_query qu, size_t sz) { |
354 | /* When we're in the _final stage, we _subtract_ from interim_alloc'd |
355 | * each allocation, and use final_allocspace to point to the next free |
356 | * bit. |
357 | */ |
358 | void *rp; |
359 | |
360 | sz= MEM_ROUND(sz); |
361 | rp= qu->final_allocspace; |
362 | assert(rp); |
363 | qu->interim_allocd -= sz; |
364 | assert(qu->interim_allocd>=0); |
365 | qu->final_allocspace= (byte*)rp + sz; |
366 | return rp; |
367 | } |
368 | |
61093792 |
369 | static void cancel_children(adns_query qu) { |
370 | adns_query cqu, ncqu; |
371 | |
372 | for (cqu= qu->children.head; cqu; cqu= ncqu) { |
373 | ncqu= cqu->siblings.next; |
374 | adns_cancel(cqu); |
375 | } |
61093792 |
376 | } |
377 | |
1be24aef |
378 | void adns__reset_preserved(adns_query qu) { |
9a2b67d4 |
379 | assert(!qu->final_allocspace); |
61093792 |
380 | cancel_children(qu); |
98db6da3 |
381 | qu->answer->nrrs= 0; |
763d28b9 |
382 | qu->answer->rrs.untyped= 0; |
1be24aef |
383 | qu->interim_allocd= qu->preserved_allocd; |
d05cc330 |
384 | } |
385 | |
f318f883 |
386 | static void free_query_allocs(adns_query qu) { |
387 | allocnode *an, *ann; |
f318f883 |
388 | |
61093792 |
389 | cancel_children(qu); |
bc01473e |
390 | for (an= qu->allocations.head; an; an= ann) { ann= an->next; free(an); } |
9f1041a6 |
391 | LIST_INIT(qu->allocations); |
f318f883 |
392 | adns__vbuf_free(&qu->vb); |
fc86e61f |
393 | adns__vbuf_free(&qu->search_vb); |
b8d9a971 |
394 | free(qu->query_dgram); |
f318f883 |
395 | } |
396 | |
26eb6bdc |
397 | void adns_cancel(adns_query qu) { |
1389dc72 |
398 | adns_state ads; |
399 | |
400 | ads= qu->ads; |
2ac463bf |
401 | adns__consistency(ads,qu,cc_entex); |
0b772fb9 |
402 | if (qu->parent) LIST_UNLINK_PART(qu->parent->children,qu,siblings.); |
f318f883 |
403 | switch (qu->state) { |
d0a057ac |
404 | case query_tosend: |
405 | LIST_UNLINK(ads->udpw,qu); |
f318f883 |
406 | break; |
d0a057ac |
407 | case query_tcpw: |
408 | LIST_UNLINK(ads->tcpw,qu); |
409 | break; |
410 | case query_childw: |
1389dc72 |
411 | LIST_UNLINK(ads->childw,qu); |
f318f883 |
412 | break; |
413 | case query_done: |
1389dc72 |
414 | LIST_UNLINK(ads->output,qu); |
f318f883 |
415 | break; |
416 | default: |
417 | abort(); |
418 | } |
419 | free_query_allocs(qu); |
420 | free(qu->answer); |
421 | free(qu); |
2ac463bf |
422 | adns__consistency(ads,0,cc_entex); |
f318f883 |
423 | } |
bc01473e |
424 | |
2c7b101b |
425 | void adns__update_expires(adns_query qu, unsigned long ttl, struct timeval now) { |
426 | time_t max; |
427 | |
428 | assert(ttl <= MAXTTLBELIEVE); |
429 | max= now.tv_sec + ttl; |
430 | if (qu->expires < max) return; |
431 | qu->expires= max; |
432 | } |
433 | |
bc01473e |
434 | static void makefinal_query(adns_query qu) { |
5c596e4d |
435 | adns_answer *ans; |
f318f883 |
436 | int rrn; |
965c9782 |
437 | |
f318f883 |
438 | ans= qu->answer; |
bc01473e |
439 | |
f318f883 |
440 | if (qu->interim_allocd) { |
f318f883 |
441 | ans= realloc(qu->answer, MEM_ROUND(MEM_ROUND(sizeof(*ans)) + qu->interim_allocd)); |
bc01473e |
442 | if (!ans) goto x_nomem; |
f2ad23ee |
443 | qu->answer= ans; |
444 | } |
965c9782 |
445 | |
f318f883 |
446 | qu->final_allocspace= (byte*)ans + MEM_ROUND(sizeof(*ans)); |
965c9782 |
447 | adns__makefinal_str(qu,&ans->cname); |
b2988d3e |
448 | adns__makefinal_str(qu,&ans->owner); |
f318f883 |
449 | |
965c9782 |
450 | if (ans->nrrs) { |
f318f883 |
451 | adns__makefinal_block(qu, &ans->rrs.untyped, ans->nrrs*ans->rrsz); |
965c9782 |
452 | |
f318f883 |
453 | for (rrn=0; rrn<ans->nrrs; rrn++) |
454 | qu->typei->makefinal(qu, ans->rrs.bytes + rrn*ans->rrsz); |
f318f883 |
455 | } |
2c7b101b |
456 | |
f318f883 |
457 | free_query_allocs(qu); |
bc01473e |
458 | return; |
965c9782 |
459 | |
bc01473e |
460 | x_nomem: |
1be24aef |
461 | qu->preserved_allocd= 0; |
bc01473e |
462 | qu->answer->cname= 0; |
1be24aef |
463 | qu->answer->owner= 0; |
464 | adns__reset_preserved(qu); /* (but we just threw away the preserved stuff) */ |
465 | |
466 | qu->answer->status= adns_s_nomemory; |
bc01473e |
467 | free_query_allocs(qu); |
468 | } |
469 | |
470 | void adns__query_done(adns_query qu) { |
471 | adns_answer *ans; |
472 | adns_query parent; |
473 | |
cb32030b |
474 | cancel_children(qu); |
475 | |
d05cc330 |
476 | qu->id= -1; |
bc01473e |
477 | ans= qu->answer; |
478 | |
b2988d3e |
479 | if (qu->flags & adns_qf_owner && qu->flags & adns_qf_search && |
480 | ans->status != adns_s_nomemory) { |
481 | if (!save_owner(qu, qu->search_vb.buf, qu->search_vb.used)) { |
482 | adns__query_fail(qu,adns_s_nomemory); |
483 | return; |
484 | } |
485 | } |
486 | |
bc01473e |
487 | if (ans->nrrs && qu->typei->diff_needswap) { |
488 | if (!adns__vbuf_ensure(&qu->vb,qu->typei->rrsz)) { |
9b86645c |
489 | adns__query_fail(qu,adns_s_nomemory); |
bc01473e |
490 | return; |
491 | } |
492 | adns__isort(ans->rrs.bytes, ans->nrrs, ans->rrsz, |
8c3aa944 |
493 | qu->vb.buf, |
494 | (int(*)(void*, const void*, const void*))qu->typei->diff_needswap, |
495 | qu->ads); |
bc01473e |
496 | } |
a095483e |
497 | |
2c7b101b |
498 | ans->expires= qu->expires; |
bc01473e |
499 | parent= qu->parent; |
500 | if (parent) { |
501 | LIST_UNLINK_PART(parent->children,qu,siblings.); |
cb32030b |
502 | LIST_UNLINK(qu->ads->childw,parent); |
cd1bde2f |
503 | qu->ctx.callback(parent,qu); |
bc01473e |
504 | free_query_allocs(qu); |
b8d9a971 |
505 | free(qu->answer); |
bc01473e |
506 | free(qu); |
bc01473e |
507 | } else { |
508 | makefinal_query(qu); |
509 | LIST_LINK_TAIL(qu->ads->output,qu); |
0b772fb9 |
510 | qu->state= query_done; |
bc01473e |
511 | } |
6f17710a |
512 | } |
513 | |
11c8bf9b |
514 | void adns__query_fail(adns_query qu, adns_status stat) { |
1be24aef |
515 | adns__reset_preserved(qu); |
965c9782 |
516 | qu->answer->status= stat; |
11c8bf9b |
517 | adns__query_done(qu); |
6f17710a |
518 | } |
98db6da3 |
519 | |
520 | void adns__makefinal_str(adns_query qu, char **strp) { |
521 | int l; |
522 | char *before, *after; |
523 | |
524 | before= *strp; |
9a2b67d4 |
525 | if (!before) return; |
98db6da3 |
526 | l= strlen(before)+1; |
527 | after= adns__alloc_final(qu,l); |
528 | memcpy(after,before,l); |
529 | *strp= after; |
530 | } |
531 | |
11c8bf9b |
532 | void adns__makefinal_block(adns_query qu, void **blpp, size_t sz) { |
9a2b67d4 |
533 | void *before, *after; |
98db6da3 |
534 | |
9a2b67d4 |
535 | before= *blpp; |
536 | if (!before) return; |
98db6da3 |
537 | after= adns__alloc_final(qu,sz); |
9a2b67d4 |
538 | memcpy(after,before,sz); |
98db6da3 |
539 | *blpp= after; |
540 | } |