Reentrancy: Add warning comment to adns__must_gettimeofday
[adns] / src / query.c
CommitLineData
e576be50 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/*
ae8cc977 8 * This file is part of adns, which is
9 * Copyright (C) 1997-2000,2003,2006 Ian Jackson
10 * Copyright (C) 1999-2000,2003,2006 Tony Finch
11 * Copyright (C) 1991 Massachusetts Institute of Technology
12 * (See the file INSTALL for full details.)
e576be50 13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 */
4353a5c4 28
4bec51a4 29#include "internal.h"
656b2da9 30
e576be50 31#include <stdlib.h>
32#include <unistd.h>
33#include <errno.h>
656b2da9 34
e576be50 35#include <sys/time.h>
656b2da9 36
e576be50 37#include "internal.h"
ddfda861 38
2c6eb096 39static adns_query query_alloc(adns_state ads,
40 const typeinfo *typei, adns_rrtype type,
660d7d3b 41 adns_queryflags flags, struct timeval now) {
42 /* Allocate a virgin query and return it. */
e576be50 43 adns_query qu;
660d7d3b 44
45 qu= malloc(sizeof(*qu)); if (!qu) return 0;
609133ee 46 qu->answer= malloc(sizeof(*qu->answer));
47 if (!qu->answer) { free(qu); return 0; }
660d7d3b 48
3955725c 49 qu->ads= ads;
d8c062fa 50 qu->state= query_tosend;
e576be50 51 qu->back= qu->next= qu->parent= 0;
52 LIST_INIT(qu->children);
660d7d3b 53 LINK_INIT(qu->siblings);
551ff40f 54 LIST_INIT(qu->allocations);
e576be50 55 qu->interim_allocd= 0;
8b3d55e3 56 qu->preserved_allocd= 0;
3955725c 57 qu->final_allocspace= 0;
e576be50 58
3955725c 59 qu->typei= typei;
660d7d3b 60 qu->query_dgram= 0;
61 qu->query_dglen= 0;
e576be50 62 adns__vbuf_init(&qu->vb);
63
64 qu->cname_dgram= 0;
65 qu->cname_dglen= qu->cname_begin= 0;
660d7d3b 66
67 adns__vbuf_init(&qu->search_vb);
68 qu->search_origlen= qu->search_pos= qu->search_doneabs= 0;
69
4fad263d 70 qu->id= -2; /* will be overwritten with real id before we leave adns */
e576be50 71 qu->flags= flags;
f7f83b4a 72 qu->retries= 0;
e576be50 73 qu->udpnextserver= 0;
f7f83b4a 74 qu->udpsent= 0;
e576be50 75 timerclear(&qu->timeout);
73dba56e 76 qu->expires= now.tv_sec + MAXTTLBELIEVE;
e576be50 77
660d7d3b 78 memset(&qu->ctx,0,sizeof(qu->ctx));
79
e576be50 80 qu->answer->status= adns_s_ok;
22181a31 81 qu->answer->cname= qu->answer->owner= 0;
2c6eb096 82 qu->answer->type= type;
660d7d3b 83 qu->answer->expires= -1;
e576be50 84 qu->answer->nrrs= 0;
71a6ff46 85 qu->answer->rrs.untyped= 0;
042b0909 86 qu->answer->rrsz= typei->getrrsz(typei,type);
ddfda861 87
660d7d3b 88 return qu;
89}
90
91static void query_submit(adns_state ads, adns_query qu,
92 const typeinfo *typei, vbuf *qumsg_vb, int id,
93 adns_queryflags flags, struct timeval now) {
94 /* Fills in the query message in for a previously-allocated query,
914a5ff5 95 * and submits it. Cannot fail. Takes over the memory for qumsg_vb.
660d7d3b 96 */
97
e576be50 98 qu->vb= *qumsg_vb;
99 adns__vbuf_init(qumsg_vb);
660d7d3b 100
101 qu->query_dgram= malloc(qu->vb.used);
102 if (!qu->query_dgram) { adns__query_fail(qu,adns_s_nomemory); return; }
103
104 qu->id= id;
105 qu->query_dglen= qu->vb.used;
106 memcpy(qu->query_dgram,qu->vb.buf,qu->vb.used);
13826233
MW
107
108 typei->query_send(qu,now);
660d7d3b 109}
110
e8e5aeac
MW
111adns_status adns__ckl_hostname(adns_state ads, adns_queryflags flags,
112 union checklabel_state *cls,
113 qcontext *ctx, int labnum,
114 const char *label, int lablen)
115{
116 int i, c;
117
118 if (flags & adns_qf_quoteok_query) return adns_s_ok;
119 for (i=0; i<lablen; i++) {
120 c= label[i];
121 if (c == '-') {
122 if (!i) return adns_s_querydomaininvalid;
123 } else if (!ctype_alpha(c) && !ctype_digit(c)) {
124 return adns_s_querydomaininvalid;
125 }
126 }
127 return adns_s_ok;
128}
129
130static adns_status check_domain_name(adns_state ads, adns_queryflags flags,
131 qcontext *ctx, const typeinfo *typei,
132 const byte *dgram, int dglen)
133{
134 findlabel_state fls;
135 adns_status err;
136 int labnum= 0, labstart, lablen;
137 union checklabel_state cls;
138
139 adns__findlabel_start(&fls,ads, -1,0, dgram,dglen,dglen, DNS_HDRSIZE,0);
140 do {
141 err= adns__findlabel_next(&fls, &lablen,&labstart);
142 assert(!err); assert(lablen >= 0);
143 err= typei->checklabel(ads,flags, &cls,ctx,
144 labnum++, dgram+labstart,lablen);
145 if (err) return err;
146 } while (lablen);
147 return adns_s_ok;
148}
149
660d7d3b 150adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
07c3d3e2 151 adns_query parent,
7f593711
MW
152 const typeinfo *typei, adns_rrtype type,
153 vbuf *qumsg_vb, int id,
660d7d3b 154 adns_queryflags flags, struct timeval now,
be4d66dc 155 qcontext *ctx) {
660d7d3b 156 adns_query qu;
e8e5aeac 157 adns_status err;
660d7d3b 158
e8e5aeac
MW
159 err= check_domain_name(ads, flags,ctx,typei, qumsg_vb->buf,qumsg_vb->used);
160 if (err) goto x_err;
7f593711 161 qu= query_alloc(ads,typei,type,flags,now);
e8e5aeac 162 if (!qu) { err = adns_s_nomemory; goto x_err; }
660d7d3b 163 *query_r= qu;
e576be50 164
07c3d3e2
IJ
165 qu->parent= parent;
166 LIST_LINK_TAIL_PART(parent->children,qu,siblings.);
660d7d3b 167 memcpy(&qu->ctx,ctx,sizeof(qu->ctx));
168 query_submit(ads,qu, typei,qumsg_vb,id,flags,now);
169
3955725c 170 return adns_s_ok;
e8e5aeac
MW
171
172x_err:
173 adns__vbuf_free(qumsg_vb);
174 return err;
660d7d3b 175}
176
177static void query_simple(adns_state ads, adns_query qu,
178 const char *owner, int ol,
179 const typeinfo *typei, adns_queryflags flags,
180 struct timeval now) {
149dd923 181 vbuf vb_new;
660d7d3b 182 int id;
183 adns_status stat;
e576be50 184
2c6eb096 185 stat= adns__mkquery(ads,&qu->vb,&id, owner,ol,
186 typei,qu->answer->type, flags);
149dd923 187 if (stat) {
188 if (stat == adns_s_querydomaintoolong && (flags & adns_qf_search)) {
189 adns__search_next(ads,qu,now);
190 return;
191 } else {
192 adns__query_fail(qu,stat);
193 return;
194 }
195 }
196
e8e5aeac
MW
197 stat= check_domain_name(ads, flags,&qu->ctx,typei, qu->vb.buf,qu->vb.used);
198 if (stat) { adns__query_fail(qu,stat); return; }
199
149dd923 200 vb_new= qu->vb;
201 adns__vbuf_init(&qu->vb);
202 query_submit(ads,qu, typei,&vb_new,id, flags,now);
660d7d3b 203}
204
205void adns__search_next(adns_state ads, adns_query qu, struct timeval now) {
206 const char *nextentry;
207 adns_status stat;
208
209 if (qu->search_doneabs<0) {
210 nextentry= 0;
211 qu->search_doneabs= 1;
212 } else {
213 if (qu->search_pos >= ads->nsearchlist) {
214 if (qu->search_doneabs) {
ac015392 215 qu->search_vb.used= qu->search_origlen;
660d7d3b 216 stat= adns_s_nxdomain; goto x_fail;
660d7d3b 217 } else {
218 nextentry= 0;
219 qu->search_doneabs= 1;
220 }
221 } else {
222 nextentry= ads->searchlist[qu->search_pos++];
223 }
224 }
225
e2632eb9 226 qu->search_vb.used= qu->search_origlen;
660d7d3b 227 if (nextentry) {
228 if (!adns__vbuf_append(&qu->search_vb,".",1) ||
ac015392 229 !adns__vbuf_appendstr(&qu->search_vb,nextentry))
230 goto x_nomemory;
660d7d3b 231 }
232
233 free(qu->query_dgram);
234 qu->query_dgram= 0; qu->query_dglen= 0;
235
609133ee 236 query_simple(ads,qu, qu->search_vb.buf, qu->search_vb.used,
237 qu->typei, qu->flags, now);
660d7d3b 238 return;
ac015392 239
240x_nomemory:
241 stat= adns_s_nomemory;
660d7d3b 242x_fail:
243 adns__query_fail(qu,stat);
4bec51a4 244}
245
22181a31 246static int save_owner(adns_query qu, const char *owner, int ol) {
247 /* Returns 1 if OK, otherwise there was no memory. */
248 adns_answer *ans;
249
ac015392 250 if (!(qu->flags & adns_qf_owner)) return 1;
251
22181a31 252 ans= qu->answer;
253 assert(!ans->owner);
254
8b3d55e3 255 ans->owner= adns__alloc_preserved(qu,ol+1); if (!ans->owner) return 0;
22181a31 256
257 memcpy(ans->owner,owner,ol);
258 ans->owner[ol]= 0;
259 return 1;
260}
261
e576be50 262int adns_submit(adns_state ads,
263 const char *owner,
264 adns_rrtype type,
e563872a 265 adns_queryflags flags,
e576be50 266 void *context,
267 adns_query *query_r) {
660d7d3b 268 int r, ol, ndots;
3955725c 269 adns_status stat;
270 const typeinfo *typei;
271 struct timeval now;
660d7d3b 272 adns_query qu;
273 const char *p;
e576be50 274
28de6442 275 adns__consistency(ads,0,cc_entex);
3e2e5fab 276
3955725c 277 typei= adns__findtype(type);
636b69b1 278 if (!typei) return ENOSYS;
e576be50 279
660d7d3b 280 r= gettimeofday(&now,0); if (r) goto x_errno;
2c6eb096 281 qu= query_alloc(ads,typei,type,flags,now); if (!qu) goto x_errno;
660d7d3b 282
283 qu->ctx.ext= context;
284 qu->ctx.callback= 0;
0ea82d76
MW
285 memset(&qu->ctx.pinfo,0,sizeof(qu->ctx.pinfo));
286 memset(&qu->ctx.tinfo,0,sizeof(qu->ctx.tinfo));
e576be50 287
e2632eb9 288 *query_r= qu;
289
e576be50 290 ol= strlen(owner);
660d7d3b 291 if (!ol) { stat= adns_s_querydomaininvalid; goto x_adnsfail; }
292 if (ol>DNS_MAXDOMAIN+1) { stat= adns_s_querydomaintoolong; goto x_adnsfail; }
e576be50 293
e9e53c73 294 if (ol>=1 && owner[ol-1]=='.' && (ol<2 || owner[ol-2]!='\\')) {
295 flags &= ~adns_qf_search;
3d1ae6ea 296 qu->flags= flags;
e9e53c73 297 ol--;
298 }
e576be50 299
660d7d3b 300 if (flags & adns_qf_search) {
301 r= adns__vbuf_append(&qu->search_vb,owner,ol);
302 if (!r) { stat= adns_s_nomemory; goto x_adnsfail; }
303
304 for (ndots=0, p=owner; (p= strchr(p,'.')); p++, ndots++);
305 qu->search_doneabs= (ndots >= ads->searchndots) ? -1 : 0;
660d7d3b 306 qu->search_origlen= ol;
660d7d3b 307 adns__search_next(ads,qu,now);
e2632eb9 308 } else {
22181a31 309 if (flags & adns_qf_owner) {
310 if (!save_owner(qu,owner,ol)) { stat= adns_s_nomemory; goto x_adnsfail; }
311 }
e2632eb9 312 query_simple(ads,qu, owner,ol, typei,flags, now);
660d7d3b 313 }
70ad7a2a 314 adns__autosys(ads,now);
28de6442 315 adns__consistency(ads,qu,cc_entex);
660d7d3b 316 return 0;
317
318 x_adnsfail:
319 adns__query_fail(qu,stat);
28de6442 320 adns__consistency(ads,qu,cc_entex);
660d7d3b 321 return 0;
322
323 x_errno:
324 r= errno;
325 assert(r);
28de6442 326 adns__consistency(ads,0,cc_entex);
660d7d3b 327 return r;
ddfda861 328}
329
2b1c6979 330int adns_submit_reverse_any(adns_state ads,
331 const struct sockaddr *addr,
332 const char *zone,
333 adns_rrtype type,
334 adns_queryflags flags,
335 void *context,
336 adns_query *query_r) {
51cb3de3 337 char *buf, *buf_free = 0;
2b1c6979 338 char shortbuf[100];
51cb3de3 339 int r;
d7449548 340
d7449548 341 flags &= ~adns_qf_search;
342
51cb3de3
MW
343 buf = shortbuf;
344 r= adns__make_reverse_domain(addr,zone, &buf,sizeof(shortbuf),&buf_free);
345 if (r) return r;
2b1c6979 346 r= adns_submit(ads,buf,type,flags,context,query_r);
347 free(buf_free);
348 return r;
349}
350
351int adns_submit_reverse(adns_state ads,
352 const struct sockaddr *addr,
353 adns_rrtype type,
354 adns_queryflags flags,
355 void *context,
356 adns_query *query_r) {
d24b603f
MW
357 if (((type^adns_r_ptr) & adns_rrt_reprmask) &&
358 ((type^adns_r_ptr_raw) & adns_rrt_reprmask))
359 return EINVAL;
51cb3de3 360 return adns_submit_reverse_any(ads,addr,0,type,flags,context,query_r);
d7449548 361}
362
e576be50 363int adns_synchronous(adns_state ads,
364 const char *owner,
365 adns_rrtype type,
e563872a 366 adns_queryflags flags,
e576be50 367 adns_answer **answer_r) {
368 adns_query qu;
369 int r;
370
371 r= adns_submit(ads,owner,type,flags,0,&qu);
372 if (r) return r;
4bec51a4 373
88372443 374 r= adns_wait(ads,&qu,answer_r,0);
3955725c 375 if (r) adns_cancel(qu);
ddfda861 376
88372443 377 return r;
e576be50 378}
379
f759e52e 380static void *alloc_common(adns_query qu, size_t sz) {
e576be50 381 allocnode *an;
382
a49a6d7b 383 if (!sz) return qu; /* Any old pointer will do */
e576be50 384 assert(!qu->final_allocspace);
e576be50 385 an= malloc(MEM_ROUND(MEM_ROUND(sizeof(*an)) + sz));
e062dcae 386 if (!an) return 0;
551ff40f 387 LIST_LINK_TAIL(qu->allocations,an);
2edb1757 388 an->sz= sz;
e576be50 389 return (byte*)an + MEM_ROUND(sizeof(*an));
390}
4bec51a4 391
f759e52e 392void *adns__alloc_interim(adns_query qu, size_t sz) {
8b3d55e3 393 void *rv;
394
f759e52e 395 sz= MEM_ROUND(sz);
8b3d55e3 396 rv= alloc_common(qu,sz);
397 if (!rv) return 0;
f759e52e 398 qu->interim_allocd += sz;
8b3d55e3 399 return rv;
400}
401
402void *adns__alloc_preserved(adns_query qu, size_t sz) {
403 void *rv;
404
405 sz= MEM_ROUND(sz);
406 rv= adns__alloc_interim(qu,sz);
407 if (!rv) return 0;
408 qu->preserved_allocd += sz;
409 return rv;
f759e52e 410}
411
2edb1757
MW
412static allocnode *alloc_info(adns_query qu, void *p, size_t *sz_r) {
413 allocnode *an;
414
415 if (!p || p == qu) { *sz_r= 0; return 0; }
416 an= (allocnode *)((byte *)p - MEM_ROUND(sizeof(allocnode)));
417 *sz_r= MEM_ROUND(an->sz);
418 return an;
419}
420
4c6fd94d
MW
421void adns__free_interim(adns_query qu, void *p) {
422 size_t sz;
423 allocnode *an= alloc_info(qu, p, &sz);
424
425 if (!an) return;
426 assert(!qu->final_allocspace);
427 LIST_UNLINK(qu->allocations, an);
428 free(an);
429 qu->interim_allocd -= sz;
430}
431
f759e52e 432void *adns__alloc_mine(adns_query qu, size_t sz) {
433 return alloc_common(qu,MEM_ROUND(sz));
434}
435
2edb1757
MW
436void adns__transfer_interim(adns_query from, adns_query to, void *block) {
437 size_t sz;
438 allocnode *an= alloc_info(from, block, &sz);
551ff40f 439
2edb1757 440 if (!an) return;
551ff40f 441
442 assert(!to->final_allocspace);
443 assert(!from->final_allocspace);
444
445 LIST_UNLINK(from->allocations,an);
446 LIST_LINK_TAIL(to->allocations,an);
447
448 from->interim_allocd -= sz;
449 to->interim_allocd += sz;
73dba56e 450
451 if (to->expires > from->expires) to->expires= from->expires;
551ff40f 452}
453
e576be50 454void *adns__alloc_final(adns_query qu, size_t sz) {
455 /* When we're in the _final stage, we _subtract_ from interim_alloc'd
456 * each allocation, and use final_allocspace to point to the next free
457 * bit.
458 */
459 void *rp;
460
461 sz= MEM_ROUND(sz);
462 rp= qu->final_allocspace;
463 assert(rp);
464 qu->interim_allocd -= sz;
465 assert(qu->interim_allocd>=0);
466 qu->final_allocspace= (byte*)rp + sz;
467 return rp;
468}
469
02887325 470void adns__cancel_children(adns_query qu) {
9ec44266 471 adns_query cqu, ncqu;
472
473 for (cqu= qu->children.head; cqu; cqu= ncqu) {
474 ncqu= cqu->siblings.next;
475 adns_cancel(cqu);
476 }
9ec44266 477}
478
8b3d55e3 479void adns__reset_preserved(adns_query qu) {
9557e604 480 assert(!qu->final_allocspace);
02887325 481 adns__cancel_children(qu);
e576be50 482 qu->answer->nrrs= 0;
71a6ff46 483 qu->answer->rrs.untyped= 0;
8b3d55e3 484 qu->interim_allocd= qu->preserved_allocd;
4353a5c4 485}
486
88372443 487static void free_query_allocs(adns_query qu) {
488 allocnode *an, *ann;
88372443 489
02887325 490 adns__cancel_children(qu);
551ff40f 491 for (an= qu->allocations.head; an; an= ann) { ann= an->next; free(an); }
bfc2c80e 492 LIST_INIT(qu->allocations);
88372443 493 adns__vbuf_free(&qu->vb);
914a5ff5 494 adns__vbuf_free(&qu->search_vb);
eed63b97 495 free(qu->query_dgram);
d1cac7c0 496 qu->query_dgram= 0;
88372443 497}
498
1dfe95d8 499void adns_cancel(adns_query qu) {
3e2e5fab 500 adns_state ads;
501
502 ads= qu->ads;
28de6442 503 adns__consistency(ads,qu,cc_entex);
33ae0ddd 504 if (qu->parent) LIST_UNLINK_PART(qu->parent->children,qu,siblings.);
88372443 505 switch (qu->state) {
f7f83b4a 506 case query_tosend:
507 LIST_UNLINK(ads->udpw,qu);
88372443 508 break;
f7f83b4a 509 case query_tcpw:
510 LIST_UNLINK(ads->tcpw,qu);
511 break;
512 case query_childw:
3e2e5fab 513 LIST_UNLINK(ads->childw,qu);
88372443 514 break;
515 case query_done:
3e2e5fab 516 LIST_UNLINK(ads->output,qu);
88372443 517 break;
518 default:
519 abort();
520 }
521 free_query_allocs(qu);
522 free(qu->answer);
523 free(qu);
28de6442 524 adns__consistency(ads,0,cc_entex);
88372443 525}
551ff40f 526
609133ee 527void adns__update_expires(adns_query qu, unsigned long ttl,
528 struct timeval now) {
73dba56e 529 time_t max;
530
531 assert(ttl <= MAXTTLBELIEVE);
532 max= now.tv_sec + ttl;
533 if (qu->expires < max) return;
534 qu->expires= max;
535}
536
551ff40f 537static void makefinal_query(adns_query qu) {
98a3f706 538 adns_answer *ans;
88372443 539 int rrn;
8e5b0abb 540
88372443 541 ans= qu->answer;
551ff40f 542
88372443 543 if (qu->interim_allocd) {
609133ee 544 ans= realloc(qu->answer,
545 MEM_ROUND(MEM_ROUND(sizeof(*ans)) + qu->interim_allocd));
551ff40f 546 if (!ans) goto x_nomem;
e062dcae 547 qu->answer= ans;
548 }
8e5b0abb 549
88372443 550 qu->final_allocspace= (byte*)ans + MEM_ROUND(sizeof(*ans));
8e5b0abb 551 adns__makefinal_str(qu,&ans->cname);
22181a31 552 adns__makefinal_str(qu,&ans->owner);
88372443 553
8e5b0abb 554 if (ans->nrrs) {
88372443 555 adns__makefinal_block(qu, &ans->rrs.untyped, ans->nrrs*ans->rrsz);
8e5b0abb 556
88372443 557 for (rrn=0; rrn<ans->nrrs; rrn++)
558 qu->typei->makefinal(qu, ans->rrs.bytes + rrn*ans->rrsz);
88372443 559 }
73dba56e 560
88372443 561 free_query_allocs(qu);
551ff40f 562 return;
8e5b0abb 563
551ff40f 564 x_nomem:
8b3d55e3 565 qu->preserved_allocd= 0;
551ff40f 566 qu->answer->cname= 0;
8b3d55e3 567 qu->answer->owner= 0;
568 adns__reset_preserved(qu); /* (but we just threw away the preserved stuff) */
569
570 qu->answer->status= adns_s_nomemory;
551ff40f 571 free_query_allocs(qu);
572}
573
574void adns__query_done(adns_query qu) {
575 adns_answer *ans;
576 adns_query parent;
577
02887325 578 adns__cancel_children(qu);
4218fb9a 579
4353a5c4 580 qu->id= -1;
551ff40f 581 ans= qu->answer;
582
ac015392 583 if (qu->flags & adns_qf_search && ans->status != adns_s_nomemory) {
22181a31 584 if (!save_owner(qu, qu->search_vb.buf, qu->search_vb.used)) {
585 adns__query_fail(qu,adns_s_nomemory);
586 return;
587 }
588 }
589
551ff40f 590 if (ans->nrrs && qu->typei->diff_needswap) {
042b0909 591 if (!adns__vbuf_ensure(&qu->vb,qu->answer->rrsz)) {
ea1e31e3 592 adns__query_fail(qu,adns_s_nomemory);
551ff40f 593 return;
594 }
595 adns__isort(ans->rrs.bytes, ans->nrrs, ans->rrsz,
09957b1c 596 qu->vb.buf,
609133ee 597 (int(*)(void*, const void*, const void*))
598 qu->typei->diff_needswap,
09957b1c 599 qu->ads);
551ff40f 600 }
d24e2a7e 601 if (ans->nrrs && qu->typei->postsort) {
042b0909
MW
602 qu->typei->postsort(qu->ads, ans->rrs.bytes,
603 ans->nrrs,ans->rrsz, qu->typei);
d24e2a7e 604 }
e553d072 605
73dba56e 606 ans->expires= qu->expires;
551ff40f 607 parent= qu->parent;
608 if (parent) {
609 LIST_UNLINK_PART(parent->children,qu,siblings.);
4218fb9a 610 LIST_UNLINK(qu->ads->childw,parent);
a6536d8b 611 qu->ctx.callback(parent,qu);
551ff40f 612 free_query_allocs(qu);
eed63b97 613 free(qu->answer);
551ff40f 614 free(qu);
551ff40f 615 } else {
616 makefinal_query(qu);
617 LIST_LINK_TAIL(qu->ads->output,qu);
33ae0ddd 618 qu->state= query_done;
551ff40f 619 }
656b2da9 620}
621
3955725c 622void adns__query_fail(adns_query qu, adns_status stat) {
8b3d55e3 623 adns__reset_preserved(qu);
8e5b0abb 624 qu->answer->status= stat;
3955725c 625 adns__query_done(qu);
656b2da9 626}
e576be50 627
628void adns__makefinal_str(adns_query qu, char **strp) {
629 int l;
630 char *before, *after;
631
632 before= *strp;
9557e604 633 if (!before) return;
e576be50 634 l= strlen(before)+1;
635 after= adns__alloc_final(qu,l);
636 memcpy(after,before,l);
637 *strp= after;
638}
639
3955725c 640void adns__makefinal_block(adns_query qu, void **blpp, size_t sz) {
9557e604 641 void *before, *after;
e576be50 642
9557e604 643 before= *blpp;
644 if (!before) return;
e576be50 645 after= adns__alloc_final(qu,sz);
9557e604 646 memcpy(after,before,sz);
e576be50 647 *blpp= after;
648}