98db6da3 |
1 | /* |
2 | * types.c |
3 | * - RR-type-specific code, and the machinery to call it |
4 | */ |
5 | /* |
a79ac5ba |
6 | * This file is |
7 | * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk> |
8 | * |
9 | * It is part of adns, which is |
10 | * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk> |
11 | * Copyright (C) 1999 Tony Finch <dot@dotat.at> |
98db6da3 |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify |
14 | * it under the terms of the GNU General Public License as published by |
15 | * the Free Software Foundation; either version 2, or (at your option) |
16 | * any later version. |
17 | * |
18 | * This program is distributed in the hope that it will be useful, |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
21 | * GNU General Public License for more details. |
22 | * |
23 | * You should have received a copy of the GNU General Public License |
24 | * along with this program; if not, write to the Free Software Foundation, |
25 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
26 | */ |
5c596e4d |
27 | |
d4c7b0b1 |
28 | #include <stdlib.h> |
29 | |
b6b3ac61 |
30 | #include <sys/types.h> |
763d28b9 |
31 | #include <sys/socket.h> |
32 | #include <netinet/in.h> |
1e9efa71 |
33 | #include <arpa/inet.h> |
34 | |
5c596e4d |
35 | #include "internal.h" |
36 | |
9b86645c |
37 | #define R_NOMEM return adns_s_nomemory |
22926c98 |
38 | #define CSP_ADDSTR(s) do { if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; } while (0) |
26eb6bdc |
39 | |
14180727 |
40 | /* |
41 | * order of sections: |
42 | * |
61093792 |
43 | * _string (pap) |
14180727 |
44 | * _textdata, _qstring (csp) |
45 | * _str (mf,cs) |
61093792 |
46 | * _intstr (mf,csp,cs) |
14180727 |
47 | * _manyistr (mf,cs) |
48 | * _txt (pa) |
49 | * _inaddr (pa,dip,di) |
50 | * _addr (pa,di,csp,cs) |
51 | * _domain (pap) |
52 | * _host_raw (pa) |
53 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs) |
54 | * _mx_raw (pa,di) |
55 | * _mx (pa,di) |
56 | * _inthostaddr (mf,cs) |
cd1bde2f |
57 | * _ptr (pa) |
61093792 |
58 | * _strpair (mf,cs) |
59 | * _intstrpair (mf,cs) |
60 | * _hinfo (pa) |
c2875680 |
61 | * _mailbox (pap +pap_mailbox822) |
61093792 |
62 | * _rp (pa) |
63 | * _soa (pa,mf,cs) |
14180727 |
64 | * _flat (mf) |
65 | * |
66 | * within each section: |
67 | * pap_* |
68 | * pa_* |
69 | * dip_* |
70 | * di_* |
71 | * mfp_* |
72 | * mf_* |
73 | * csp_* |
74 | * cs_* |
75 | */ |
76 | |
77 | /* |
0872e289 |
78 | * _qstring (pap,csp) |
14180727 |
79 | */ |
80 | |
0872e289 |
81 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
61093792 |
82 | int *len_r, char **str_r) { |
83 | /* Neither len_r nor str_r may be null. |
84 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; |
85 | */ |
86 | const byte *dgram= pai->dgram; |
87 | int l, cbyte; |
88 | char *str; |
89 | |
90 | cbyte= *cbyte_io; |
91 | |
92 | if (cbyte >= max) return adns_s_invaliddata; |
93 | GET_B(cbyte,l); |
94 | if (cbyte+l > max) return adns_s_invaliddata; |
95 | |
96 | str= adns__alloc_interim(pai->qu, l+1); |
97 | if (!str) R_NOMEM; |
98 | |
99 | str[l]= 0; |
100 | memcpy(str,dgram+cbyte,l); |
101 | |
102 | *len_r= l; |
103 | *str_r= str; |
104 | *cbyte_io= cbyte+l; |
105 | |
106 | return adns_s_ok; |
107 | } |
108 | |
0872e289 |
109 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
14180727 |
110 | unsigned char ch; |
111 | char buf[10]; |
112 | int cn; |
113 | |
114 | CSP_ADDSTR("\""); |
115 | for (cn=0; cn<len; cn++) { |
116 | ch= *dp++; |
0872e289 |
117 | if (ch == '\\') { |
61093792 |
118 | CSP_ADDSTR("\\\\"); |
0872e289 |
119 | } else if (ch == '"') { |
120 | CSP_ADDSTR("\\\""); |
121 | } else if (ch >= 32 && ch <= 126) { |
122 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; |
14180727 |
123 | } else { |
61093792 |
124 | sprintf(buf,"\\x%02x",ch); |
14180727 |
125 | CSP_ADDSTR(buf); |
126 | } |
127 | } |
128 | CSP_ADDSTR("\""); |
129 | |
130 | return adns_s_ok; |
131 | } |
132 | |
14180727 |
133 | /* |
0872e289 |
134 | * _str (mf) |
14180727 |
135 | */ |
136 | |
137 | static void mf_str(adns_query qu, void *datap) { |
138 | char **rrp= datap; |
139 | |
140 | adns__makefinal_str(qu,rrp); |
141 | } |
142 | |
14180727 |
143 | /* |
0872e289 |
144 | * _intstr (mf) |
14180727 |
145 | */ |
146 | |
147 | static void mf_intstr(adns_query qu, void *datap) { |
148 | adns_rr_intstr *rrp= datap; |
149 | |
150 | adns__makefinal_str(qu,&rrp->str); |
151 | } |
152 | |
14180727 |
153 | /* |
0872e289 |
154 | * _manyistr (mf) |
14180727 |
155 | */ |
156 | |
157 | static void mf_manyistr(adns_query qu, void *datap) { |
158 | adns_rr_intstr **rrp= datap; |
159 | adns_rr_intstr *te, *table; |
160 | void *tablev; |
161 | int tc; |
162 | |
163 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); |
164 | tablev= *rrp; |
165 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); |
166 | *rrp= table= tablev; |
167 | for (te= *rrp; te->i >= 0; te++) |
168 | adns__makefinal_str(qu,&te->str); |
169 | } |
170 | |
14180727 |
171 | /* |
0872e289 |
172 | * _txt (pa,cs) |
14180727 |
173 | */ |
174 | |
175 | static adns_status pa_txt(const parseinfo *pai, int cbyte, int max, void *datap) { |
176 | adns_rr_intstr **rrp= datap, *table, *te; |
177 | const byte *dgram= pai->dgram; |
178 | int ti, tc, l, startbyte; |
61093792 |
179 | adns_status st; |
14180727 |
180 | |
181 | startbyte= cbyte; |
182 | if (cbyte >= max) return adns_s_invaliddata; |
183 | tc= 0; |
184 | while (cbyte < max) { |
185 | GET_B(cbyte,l); |
186 | cbyte+= l; |
61093792 |
187 | tc++; |
14180727 |
188 | } |
0872e289 |
189 | if (cbyte != max || !tc) return adns_s_invaliddata; |
14180727 |
190 | |
191 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); |
192 | if (!table) R_NOMEM; |
193 | |
194 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { |
0872e289 |
195 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
61093792 |
196 | if (st) return st; |
14180727 |
197 | } |
198 | assert(cbyte == max); |
199 | |
200 | te->i= -1; |
201 | te->str= 0; |
202 | |
203 | *rrp= table; |
204 | return adns_s_ok; |
cd363ffd |
205 | } |
206 | |
0872e289 |
207 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
208 | const adns_rr_intstr *const *rrp= datap; |
209 | const adns_rr_intstr *current; |
210 | adns_status st; |
211 | int spc; |
212 | |
213 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { |
214 | if (spc) CSP_ADDSTR(" "); |
215 | st= csp_qstring(vb,current->str,current->i); if (st) return st; |
216 | } |
217 | return adns_s_ok; |
218 | } |
219 | |
220 | /* |
221 | * _hinfo (cs) |
222 | */ |
223 | |
224 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { |
225 | const adns_rr_intstrpair *rrp= datap; |
226 | adns_status st; |
227 | |
228 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; |
229 | CSP_ADDSTR(" "); |
230 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; |
231 | return adns_s_ok; |
232 | } |
233 | |
14180727 |
234 | /* |
235 | * _inaddr (pa,dip,di) |
236 | */ |
237 | |
26eb6bdc |
238 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, int max, void *datap) { |
f2ad23ee |
239 | struct in_addr *storeto= datap; |
68b7fc5f |
240 | |
241 | if (max-cbyte != 4) return adns_s_invaliddata; |
26eb6bdc |
242 | memcpy(storeto, pai->dgram + cbyte, 4); |
68b7fc5f |
243 | return adns_s_ok; |
244 | } |
245 | |
8c3aa944 |
246 | static int search_sortlist(adns_state ads, struct in_addr ad) { |
247 | const struct sortlist *slp; |
248 | int i; |
249 | |
250 | for (i=0, slp=ads->sortlist; |
251 | i<ads->nsortlist && !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr); |
252 | i++, slp++); |
253 | return i; |
14180727 |
254 | } |
255 | |
8c3aa944 |
256 | static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) { |
257 | int ai, bi; |
258 | |
259 | if (!ads->nsortlist) return 0; |
260 | |
261 | ai= search_sortlist(ads,a); |
262 | bi= search_sortlist(ads,b); |
263 | return bi<ai; |
264 | } |
265 | |
266 | static int di_inaddr(adns_state ads, const void *datap_a, const void *datap_b) { |
f2ad23ee |
267 | const struct in_addr *ap= datap_a, *bp= datap_b; |
268 | |
8c3aa944 |
269 | return dip_inaddr(ads,*ap,*bp); |
f2ad23ee |
270 | } |
271 | |
272 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { |
273 | const struct in_addr *rrp= datap, rr= *rrp; |
1e9efa71 |
274 | const char *ia; |
275 | |
f2ad23ee |
276 | ia= inet_ntoa(rr); assert(ia); |
26eb6bdc |
277 | CSP_ADDSTR(ia); |
278 | return adns_s_ok; |
1e9efa71 |
279 | } |
68b7fc5f |
280 | |
14180727 |
281 | /* |
282 | * _addr (pa,di,csp,cs) |
283 | */ |
284 | |
26eb6bdc |
285 | static adns_status pa_addr(const parseinfo *pai, int cbyte, int max, void *datap) { |
bc01473e |
286 | adns_rr_addr *storeto= datap; |
26eb6bdc |
287 | const byte *dgram= pai->dgram; |
a1d2d0ed |
288 | |
cd363ffd |
289 | if (max-cbyte != 4) return adns_s_invaliddata; |
290 | storeto->len= sizeof(storeto->addr.inet); |
291 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); |
292 | storeto->addr.inet.sin_family= AF_INET; |
cd363ffd |
293 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
294 | return adns_s_ok; |
295 | } |
296 | |
8c3aa944 |
297 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
bc01473e |
298 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
cd363ffd |
299 | |
26eb6bdc |
300 | assert(ap->addr.sa.sa_family == AF_INET); |
8c3aa944 |
301 | return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr); |
cd363ffd |
302 | } |
303 | |
8c3aa944 |
304 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
305 | const adns_state ads= context; |
306 | |
307 | return di_addr(ads, datap_a, datap_b); |
308 | } |
309 | |
bc01473e |
310 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
cd363ffd |
311 | const char *ia; |
312 | static char buf[30]; |
313 | |
314 | switch (rrp->addr.inet.sin_family) { |
315 | case AF_INET: |
0872e289 |
316 | CSP_ADDSTR("INET "); |
cd363ffd |
317 | ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia); |
26eb6bdc |
318 | CSP_ADDSTR(ia); |
cd363ffd |
319 | break; |
320 | default: |
321 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); |
26eb6bdc |
322 | CSP_ADDSTR(buf); |
cd363ffd |
323 | break; |
324 | } |
325 | return adns_s_ok; |
326 | } |
327 | |
26eb6bdc |
328 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
bc01473e |
329 | const adns_rr_addr *rrp= datap; |
26eb6bdc |
330 | |
331 | return csp_addr(vb,rrp); |
332 | } |
333 | |
14180727 |
334 | /* |
0872e289 |
335 | * _domain (pap,csp,cs) |
336 | * _dom_raw (pa) |
14180727 |
337 | */ |
338 | |
26eb6bdc |
339 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
340 | char **domain_r, parsedomain_flags flags) { |
f2ad23ee |
341 | adns_status st; |
342 | char *dm; |
343 | |
26eb6bdc |
344 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
345 | pai->dgram,pai->dglen, cbyte_io, max); |
f2ad23ee |
346 | if (st) return st; |
26eb6bdc |
347 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
f2ad23ee |
348 | |
26eb6bdc |
349 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
350 | if (!dm) R_NOMEM; |
f2ad23ee |
351 | |
26eb6bdc |
352 | dm[pai->qu->vb.used]= 0; |
353 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); |
f2ad23ee |
354 | |
355 | *domain_r= dm; |
356 | return adns_s_ok; |
357 | } |
358 | |
0872e289 |
359 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
360 | CSP_ADDSTR(domain); |
361 | if (!*domain) CSP_ADDSTR("."); |
362 | return adns_s_ok; |
363 | } |
364 | |
365 | static adns_status cs_domain(vbuf *vb, const void *datap) { |
366 | const char *const *domainp= datap; |
367 | return csp_domain(vb,*domainp); |
368 | } |
369 | |
370 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, int max, void *datap) { |
371 | char **rrp= datap; |
372 | adns_status st; |
373 | |
374 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); |
375 | if (st) return st; |
376 | |
377 | if (cbyte != max) return adns_s_invaliddata; |
378 | return adns_s_ok; |
379 | } |
380 | |
14180727 |
381 | /* |
382 | * _host_raw (pa) |
383 | */ |
384 | |
26eb6bdc |
385 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, int max, void *datap) { |
f2ad23ee |
386 | char **rrp= datap; |
cfdca685 |
387 | adns_status st; |
1e9efa71 |
388 | |
26eb6bdc |
389 | st= pap_domain(pai, &cbyte, max, rrp, |
390 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
f2ad23ee |
391 | if (st) return st; |
392 | |
393 | if (cbyte != max) return adns_s_invaliddata; |
394 | return adns_s_ok; |
395 | } |
cfdca685 |
396 | |
14180727 |
397 | /* |
bc01473e |
398 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs) |
14180727 |
399 | */ |
a1d2d0ed |
400 | |
26eb6bdc |
401 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
402 | int *cbyte_io, int count, int dmstart) { |
403 | int rri, naddrs; |
a1d2d0ed |
404 | int type, class, rdlen, rdstart, ownermatched; |
2c7b101b |
405 | unsigned long ttl; |
26eb6bdc |
406 | adns_status st; |
a1d2d0ed |
407 | |
26eb6bdc |
408 | for (rri=0, naddrs=-1; rri<count; rri++) { |
409 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, pai->dglen, cbyte_io, |
2c7b101b |
410 | &type, &class, &ttl, &rdlen, &rdstart, |
26eb6bdc |
411 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
a1d2d0ed |
412 | if (st) return st; |
26eb6bdc |
413 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
414 | if (naddrs>0) break; else continue; |
415 | } |
416 | if (naddrs == -1) { |
417 | naddrs= 0; |
a1d2d0ed |
418 | } |
bc01473e |
419 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr))) R_NOMEM; |
2c7b101b |
420 | adns__update_expires(pai->qu,ttl,pai->now); |
bc01473e |
421 | st= pa_addr(pai, rdstart,rdstart+rdlen, |
422 | pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr)); |
a1d2d0ed |
423 | if (st) return st; |
26eb6bdc |
424 | naddrs++; |
a1d2d0ed |
425 | } |
26eb6bdc |
426 | if (naddrs >= 0) { |
bc01473e |
427 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc |
428 | if (!ha->addrs) R_NOMEM; |
bc01473e |
429 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc |
430 | ha->naddrs= naddrs; |
a1d2d0ed |
431 | ha->astatus= adns_s_ok; |
26eb6bdc |
432 | |
8c3aa944 |
433 | adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf, |
434 | div_addr, pai->ads); |
a1d2d0ed |
435 | } |
436 | return adns_s_ok; |
437 | } |
438 | |
bc01473e |
439 | static void icb_hostaddr(adns_query parent, adns_query child) { |
bc01473e |
440 | adns_answer *cans= child->answer; |
cd1bde2f |
441 | adns_rr_hostaddr *rrp= child->ctx.info.hostaddr; |
cb32030b |
442 | adns_state ads= parent->ads; |
0872e289 |
443 | adns_status st; |
bc01473e |
444 | |
0872e289 |
445 | st= cans->status; |
446 | rrp->astatus= st; |
447 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs; |
bc01473e |
448 | rrp->addrs= cans->rrs.addr; |
449 | adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*sizeof(adns_rr_addr)); |
cd1bde2f |
450 | |
cb32030b |
451 | if (parent->children.head) { |
452 | LIST_LINK_TAIL(ads->childw,parent); |
453 | } else { |
454 | adns__query_done(parent); |
455 | } |
bc01473e |
456 | } |
457 | |
26eb6bdc |
458 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
459 | int max, adns_rr_hostaddr *rrp) { |
a1d2d0ed |
460 | adns_status st; |
461 | int dmstart, cbyte; |
ba1ddf08 |
462 | qcontext ctx; |
463 | int id; |
464 | adns_query nqu; |
59fbb06a |
465 | adns_queryflags nflags; |
a1d2d0ed |
466 | |
467 | dmstart= cbyte= *cbyte_io; |
26eb6bdc |
468 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
469 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
a1d2d0ed |
470 | if (st) return st; |
471 | *cbyte_io= cbyte; |
472 | |
473 | rrp->astatus= adns_s_ok; |
474 | rrp->naddrs= -1; |
475 | rrp->addrs= 0; |
476 | |
26eb6bdc |
477 | cbyte= pai->nsstart; |
a1d2d0ed |
478 | |
26eb6bdc |
479 | st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart); |
a1d2d0ed |
480 | if (st) return st; |
481 | if (rrp->naddrs != -1) return adns_s_ok; |
482 | |
26eb6bdc |
483 | st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart); |
a1d2d0ed |
484 | if (st) return st; |
485 | if (rrp->naddrs != -1) return adns_s_ok; |
26eb6bdc |
486 | |
ba1ddf08 |
487 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
488 | pai->dgram, pai->dglen, dmstart, |
489 | adns_r_addr, adns_qf_quoteok_query); |
490 | if (st) return st; |
bc01473e |
491 | |
cd1bde2f |
492 | ctx.ext= 0; |
493 | ctx.callback= icb_hostaddr; |
494 | ctx.info.hostaddr= rrp; |
59fbb06a |
495 | |
496 | nflags= adns_qf_quoteok_query; |
497 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; |
498 | |
ba1ddf08 |
499 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
7e6a84a1 |
500 | &pai->qu->vb, id, nflags, pai->now, &ctx); |
ba1ddf08 |
501 | if (st) return st; |
502 | |
503 | nqu->parent= pai->qu; |
504 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); |
26eb6bdc |
505 | |
506 | return adns_s_ok; |
a1d2d0ed |
507 | } |
508 | |
26eb6bdc |
509 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, int max, void *datap) { |
510 | adns_rr_hostaddr *rrp= datap; |
a1d2d0ed |
511 | adns_status st; |
a1d2d0ed |
512 | |
26eb6bdc |
513 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
a1d2d0ed |
514 | if (st) return st; |
515 | if (cbyte != max) return adns_s_invaliddata; |
516 | |
26eb6bdc |
517 | return adns_s_ok; |
518 | } |
a1d2d0ed |
519 | |
8c3aa944 |
520 | static int dip_hostaddr(adns_state ads, const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { |
26eb6bdc |
521 | if (ap->astatus != bp->astatus) return ap->astatus; |
522 | if (ap->astatus) return 0; |
a1d2d0ed |
523 | |
26eb6bdc |
524 | assert(ap->addrs[0].addr.sa.sa_family == AF_INET); |
525 | assert(bp->addrs[0].addr.sa.sa_family == AF_INET); |
8c3aa944 |
526 | return dip_inaddr(ads, |
527 | ap->addrs[0].addr.inet.sin_addr, |
528 | bp->addrs[0].addr.inet.sin_addr); |
26eb6bdc |
529 | } |
530 | |
8c3aa944 |
531 | static int di_hostaddr(adns_state ads, const void *datap_a, const void *datap_b) { |
26eb6bdc |
532 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
533 | |
8c3aa944 |
534 | return dip_hostaddr(ads, ap,bp); |
a1d2d0ed |
535 | } |
536 | |
14180727 |
537 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
538 | void *tablev; |
f2ad23ee |
539 | |
14180727 |
540 | adns__makefinal_str(qu,&rrp->host); |
541 | tablev= rrp->addrs; |
542 | adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs)); |
543 | rrp->addrs= tablev; |
f2ad23ee |
544 | } |
545 | |
14180727 |
546 | static void mf_hostaddr(adns_query qu, void *datap) { |
547 | adns_rr_hostaddr *rrp= datap; |
f2ad23ee |
548 | |
14180727 |
549 | mfp_hostaddr(qu,rrp); |
f2ad23ee |
550 | } |
551 | |
26eb6bdc |
552 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
0fb18816 |
553 | const char *errstr; |
26eb6bdc |
554 | adns_status st; |
9e50e3ac |
555 | char buf[20]; |
26eb6bdc |
556 | int i; |
557 | |
0fb18816 |
558 | st= csp_domain(vb,rrp->host); if (st) return st; |
26eb6bdc |
559 | |
0872e289 |
560 | CSP_ADDSTR(" "); |
9e50e3ac |
561 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
562 | |
563 | sprintf(buf," %d ",rrp->astatus); |
564 | CSP_ADDSTR(buf); |
0fb18816 |
565 | |
9e50e3ac |
566 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
0fb18816 |
567 | CSP_ADDSTR(" "); |
9e50e3ac |
568 | |
0fb18816 |
569 | errstr= adns_strerror(rrp->astatus); |
570 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; |
0872e289 |
571 | |
572 | if (rrp->naddrs >= 0) { |
573 | CSP_ADDSTR(" ("); |
574 | for (i=0; i<rrp->naddrs; i++) { |
575 | CSP_ADDSTR(" "); |
26eb6bdc |
576 | st= csp_addr(vb,&rrp->addrs[i]); |
577 | } |
0872e289 |
578 | CSP_ADDSTR(" )"); |
579 | } else { |
580 | CSP_ADDSTR(" ?"); |
26eb6bdc |
581 | } |
582 | return adns_s_ok; |
583 | } |
584 | |
585 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { |
586 | const adns_rr_hostaddr *rrp= datap; |
587 | |
588 | return csp_hostaddr(vb,rrp); |
589 | } |
590 | |
14180727 |
591 | /* |
592 | * _mx_raw (pa,di) |
593 | */ |
26eb6bdc |
594 | |
14180727 |
595 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, int max, void *datap) { |
596 | const byte *dgram= pai->dgram; |
597 | adns_rr_intstr *rrp= datap; |
598 | adns_status st; |
599 | int pref; |
26eb6bdc |
600 | |
14180727 |
601 | if (cbyte+2 > max) return adns_s_invaliddata; |
602 | GET_W(cbyte,pref); |
603 | rrp->i= pref; |
604 | st= pap_domain(pai, &cbyte, max, &rrp->str, |
605 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
606 | if (st) return st; |
26eb6bdc |
607 | |
14180727 |
608 | if (cbyte != max) return adns_s_invaliddata; |
609 | return adns_s_ok; |
610 | } |
26eb6bdc |
611 | |
8c3aa944 |
612 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
14180727 |
613 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
614 | |
615 | if (ap->i < bp->i) return 0; |
616 | if (ap->i > bp->i) return 1; |
617 | return 0; |
26eb6bdc |
618 | } |
619 | |
14180727 |
620 | /* |
621 | * _mx (pa,di) |
622 | */ |
26eb6bdc |
623 | |
14180727 |
624 | static adns_status pa_mx(const parseinfo *pai, int cbyte, int max, void *datap) { |
625 | const byte *dgram= pai->dgram; |
626 | adns_rr_inthostaddr *rrp= datap; |
627 | adns_status st; |
628 | int pref; |
629 | |
630 | if (cbyte+2 > max) return adns_s_invaliddata; |
631 | GET_W(cbyte,pref); |
632 | rrp->i= pref; |
633 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); |
634 | if (st) return st; |
635 | |
636 | if (cbyte != max) return adns_s_invaliddata; |
637 | return adns_s_ok; |
638 | } |
639 | |
8c3aa944 |
640 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
14180727 |
641 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
642 | |
643 | if (ap->i < bp->i) return 0; |
644 | if (ap->i > bp->i) return 1; |
8c3aa944 |
645 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
26eb6bdc |
646 | } |
647 | |
14180727 |
648 | /* |
649 | * _inthostaddr (mf,cs) |
650 | */ |
651 | |
26eb6bdc |
652 | static void mf_inthostaddr(adns_query qu, void *datap) { |
653 | adns_rr_inthostaddr *rrp= datap; |
654 | |
655 | mfp_hostaddr(qu,&rrp->ha); |
656 | } |
657 | |
14180727 |
658 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
659 | const adns_rr_inthostaddr *rrp= datap; |
660 | char buf[10]; |
f2ad23ee |
661 | |
14180727 |
662 | sprintf(buf,"%u ",rrp->i); |
663 | CSP_ADDSTR(buf); |
664 | |
665 | return csp_hostaddr(vb,&rrp->ha); |
cfdca685 |
666 | } |
667 | |
14180727 |
668 | /* |
0872e289 |
669 | * _inthost (cs) |
670 | */ |
671 | |
672 | static adns_status cs_inthost(vbuf *vb, const void *datap) { |
673 | const adns_rr_intstr *rrp= datap; |
674 | char buf[10]; |
675 | |
676 | sprintf(buf,"%u ",rrp->i); |
677 | CSP_ADDSTR(buf); |
678 | return csp_domain(vb,rrp->str); |
679 | } |
680 | |
681 | /* |
cd1bde2f |
682 | * _ptr (pa, +icb_ptr) |
683 | */ |
684 | |
685 | static void icb_ptr(adns_query parent, adns_query child) { |
686 | adns_answer *cans= child->answer; |
687 | const adns_rr_addr *queried, *found; |
cb32030b |
688 | adns_state ads= parent->ads; |
cd1bde2f |
689 | int i; |
690 | |
691 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { |
692 | adns__query_fail(parent,adns_s_inconsistent); |
693 | return; |
694 | } else if (cans->status) { |
695 | adns__query_fail(parent,cans->status); |
696 | return; |
697 | } |
698 | |
699 | queried= &parent->ctx.info.ptr_parent_addr; |
700 | for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) { |
701 | if (queried->len == found->len && |
702 | !memcmp(&queried->addr,&found->addr,queried->len)) { |
cb32030b |
703 | if (!parent->children.head) { |
704 | adns__query_done(parent); |
705 | return; |
706 | } else { |
707 | LIST_LINK_TAIL(ads->childw,parent); |
708 | return; |
709 | } |
cd1bde2f |
710 | } |
711 | } |
712 | |
713 | adns__query_fail(parent,adns_s_inconsistent); |
714 | } |
715 | |
716 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, int max, void *datap) { |
717 | static const char *(expectdomain[])= { DNS_INADDR_ARPA }; |
718 | |
719 | char **rrp= datap; |
720 | adns_status st; |
721 | adns_rr_addr *ap; |
722 | findlabel_state fls; |
723 | char *ep; |
724 | byte ipv[4]; |
725 | char labbuf[4]; |
726 | int cbyte, i, lablen, labstart, l, id; |
727 | adns_query nqu; |
728 | qcontext ctx; |
729 | |
730 | cbyte= dmstart; |
731 | st= pap_domain(pai, &cbyte, max, rrp, |
732 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
733 | if (st) return st; |
734 | if (cbyte != max) return adns_s_invaliddata; |
735 | |
736 | ap= &pai->qu->ctx.info.ptr_parent_addr; |
737 | if (!ap->len) { |
738 | adns__findlabel_start(&fls, pai->ads, -1, pai->qu, |
739 | pai->qu->query_dgram, pai->qu->query_dglen, |
740 | pai->qu->query_dglen, DNS_HDRSIZE, 0); |
741 | for (i=0; i<4; i++) { |
742 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); |
9b86645c |
743 | if (lablen<=0 || lablen>3) return adns_s_querydomainwrong; |
cd1bde2f |
744 | memcpy(labbuf, pai->qu->query_dgram + labstart, lablen); labbuf[lablen]= 0; |
9b86645c |
745 | ipv[3-i]= strtoul(labbuf,&ep,10); if (*ep) return adns_s_querydomainwrong; |
cd1bde2f |
746 | if (lablen>1 && pai->qu->query_dgram[labstart]=='0') |
9b86645c |
747 | return adns_s_querydomainwrong; |
cd1bde2f |
748 | } |
749 | for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) { |
750 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); |
751 | l= strlen(expectdomain[i]); |
752 | if (lablen != l || memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l)) |
9b86645c |
753 | return adns_s_querydomainwrong; |
cd1bde2f |
754 | } |
755 | st= adns__findlabel_next(&fls,&lablen,0); assert(!st); |
9b86645c |
756 | if (lablen) return adns_s_querydomainwrong; |
cd1bde2f |
757 | |
758 | ap->len= sizeof(struct sockaddr_in); |
759 | memset(&ap->addr,0,sizeof(ap->addr.inet)); |
760 | ap->addr.inet.sin_family= AF_INET; |
761 | ap->addr.inet.sin_addr.s_addr= |
762 | htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3])); |
763 | } |
764 | |
765 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
766 | pai->dgram, pai->dglen, dmstart, |
767 | adns_r_addr, adns_qf_quoteok_query); |
768 | if (st) return st; |
769 | |
770 | ctx.ext= 0; |
771 | ctx.callback= icb_ptr; |
772 | memset(&ctx.info,0,sizeof(ctx.info)); |
773 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
774 | &pai->qu->vb, id, |
7e6a84a1 |
775 | adns_qf_quoteok_query, pai->now, &ctx); |
cd1bde2f |
776 | if (st) return st; |
777 | |
778 | nqu->parent= pai->qu; |
779 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); |
cd1bde2f |
780 | return adns_s_ok; |
781 | } |
782 | |
783 | /* |
0872e289 |
784 | * _strpair (mf) |
61093792 |
785 | */ |
786 | |
787 | static void mf_strpair(adns_query qu, void *datap) { |
788 | adns_rr_strpair *rrp= datap; |
789 | |
790 | adns__makefinal_str(qu,&rrp->array[0]); |
791 | adns__makefinal_str(qu,&rrp->array[1]); |
792 | } |
793 | |
61093792 |
794 | /* |
0872e289 |
795 | * _intstrpair (mf) |
61093792 |
796 | */ |
797 | |
798 | static void mf_intstrpair(adns_query qu, void *datap) { |
799 | adns_rr_intstrpair *rrp= datap; |
800 | |
801 | adns__makefinal_str(qu,&rrp->array[0].str); |
802 | adns__makefinal_str(qu,&rrp->array[1].str); |
803 | } |
804 | |
61093792 |
805 | /* |
806 | * _hinfo (pa) |
807 | */ |
808 | |
809 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, int max, void *datap) { |
810 | adns_rr_intstrpair *rrp= datap; |
811 | adns_status st; |
812 | int i; |
813 | |
814 | for (i=0; i<2; i++) { |
0872e289 |
815 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
61093792 |
816 | if (st) return st; |
817 | } |
818 | |
819 | if (cbyte != max) return adns_s_invaliddata; |
820 | |
821 | return adns_s_ok; |
822 | } |
823 | |
824 | /* |
0872e289 |
825 | * _mailbox (pap,cs) |
61093792 |
826 | */ |
827 | |
c2875680 |
828 | static adns_status pap_mailbox822(const parseinfo *pai, int *cbyte_io, int max, |
829 | char **mb_r) { |
6f2c243f |
830 | int lablen, labstart, i, needquote, c, r, neednorm; |
831 | const unsigned char *p; |
832 | char *str; |
833 | findlabel_state fls; |
834 | adns_status st; |
835 | vbuf *vb; |
836 | |
837 | vb= &pai->qu->vb; |
838 | vb->used= 0; |
839 | adns__findlabel_start(&fls, pai->ads, |
840 | -1, pai->qu, |
841 | pai->dgram, pai->dglen, max, |
842 | *cbyte_io, cbyte_io); |
843 | st= adns__findlabel_next(&fls,&lablen,&labstart); |
844 | if (!lablen) { |
0872e289 |
845 | adns__vbuf_appendstr(vb,"."); |
6f2c243f |
846 | goto x_ok; |
847 | } |
848 | |
849 | neednorm= 1; |
850 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { |
851 | c= *p++; |
852 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; |
853 | if (c == '.' && !neednorm) neednorm= 1; |
0872e289 |
854 | else if (c==' ' || ctype_822special(c)) needquote++; |
6f2c243f |
855 | else neednorm= 0; |
856 | } |
857 | |
858 | if (needquote || neednorm) { |
859 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; |
860 | adns__vbuf_appendq(vb,"\"",1); |
861 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { |
862 | c= *p; |
0872e289 |
863 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
6f2c243f |
864 | adns__vbuf_appendq(vb,p,1); |
865 | } |
866 | adns__vbuf_appendq(vb,"\"",1); |
867 | } else { |
868 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; |
869 | } |
870 | |
871 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; |
872 | |
873 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); |
874 | if (st) return st; |
875 | |
876 | x_ok: |
877 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; |
878 | memcpy(str,vb->buf,vb->used); |
879 | str[vb->used]= 0; |
880 | *mb_r= str; |
881 | return adns_s_ok; |
61093792 |
882 | } |
883 | |
c2875680 |
884 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
885 | char **mb_r) { |
886 | if (pai->qu->typei->type & adns__qtf_mail822) { |
887 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
888 | } else { |
0872e289 |
889 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
c2875680 |
890 | } |
891 | } |
892 | |
0872e289 |
893 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
894 | return csp_domain(vb,mailbox); |
895 | } |
896 | |
61093792 |
897 | /* |
0872e289 |
898 | * _rp (pa,cs) |
61093792 |
899 | */ |
900 | |
901 | static adns_status pa_rp(const parseinfo *pai, int cbyte, int max, void *datap) { |
902 | adns_rr_strpair *rrp= datap; |
903 | adns_status st; |
904 | |
905 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); |
906 | if (st) return st; |
907 | |
908 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); |
909 | if (st) return st; |
910 | |
911 | if (cbyte != max) return adns_s_invaliddata; |
912 | return adns_s_ok; |
913 | } |
914 | |
0872e289 |
915 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
916 | const adns_rr_strpair *rrp= datap; |
917 | adns_status st; |
918 | |
919 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; |
920 | CSP_ADDSTR(" "); |
921 | st= csp_domain(vb,rrp->array[1]); if (st) return st; |
922 | |
923 | return adns_s_ok; |
924 | } |
925 | |
61093792 |
926 | /* |
927 | * _soa (pa,mf,cs) |
928 | */ |
929 | |
930 | static adns_status pa_soa(const parseinfo *pai, int cbyte, int max, void *datap) { |
931 | adns_rr_soa *rrp= datap; |
932 | const byte *dgram= pai->dgram; |
933 | adns_status st; |
934 | int msw, lsw, i; |
935 | |
936 | st= pap_domain(pai, &cbyte, max, &rrp->mname, |
937 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
938 | if (st) return st; |
939 | |
940 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); |
941 | if (st) return st; |
942 | |
943 | if (cbyte+20 != max) return adns_s_invaliddata; |
944 | |
945 | for (i=0; i<5; i++) { |
946 | GET_W(cbyte,msw); |
947 | GET_W(cbyte,lsw); |
948 | (&rrp->serial)[i]= (msw<<16) | lsw; |
949 | } |
950 | |
951 | return adns_s_ok; |
952 | } |
953 | |
954 | static void mf_soa(adns_query qu, void *datap) { |
955 | adns_rr_soa *rrp= datap; |
956 | |
957 | adns__makefinal_str(qu,&rrp->mname); |
958 | adns__makefinal_str(qu,&rrp->rname); |
959 | } |
960 | |
961 | static adns_status cs_soa(vbuf *vb, const void *datap) { |
962 | const adns_rr_soa *rrp= datap; |
963 | char buf[20]; |
964 | int i; |
965 | adns_status st; |
966 | |
0872e289 |
967 | st= csp_domain(vb,rrp->mname); if (st) return st; |
61093792 |
968 | CSP_ADDSTR(" "); |
0872e289 |
969 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
61093792 |
970 | |
971 | for (i=0; i<5; i++) { |
972 | sprintf(buf," %lu",(&rrp->serial)[i]); |
973 | CSP_ADDSTR(buf); |
974 | } |
975 | |
976 | return adns_s_ok; |
977 | } |
978 | |
979 | /* |
14180727 |
980 | * _flat (mf) |
981 | */ |
982 | |
cfdca685 |
983 | static void mf_flat(adns_query qu, void *data) { } |
984 | |
14180727 |
985 | /* |
986 | * Now the table. |
987 | */ |
988 | |
f2ad23ee |
989 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
1e9efa71 |
990 | |
cfdca685 |
991 | #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb |
992 | #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb |
5c596e4d |
993 | |
0872e289 |
994 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \ |
995 | { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_##memb, printer, parser, comparer } |
996 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \ |
997 | { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_flat, printer, parser, comparer } |
5c596e4d |
998 | |
999 | static const typeinfo typeinfos[] = { |
14180727 |
1000 | /* Must be in ascending order of rrtype ! */ |
0872e289 |
1001 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1002 | |
1003 | FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr, cs_inaddr ), |
1004 | DEEP_TYPE(ns_raw, "NS", "raw", str, pa_host_raw,0, cs_domain ), |
1005 | DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ), |
1006 | DEEP_TYPE(soa_raw,"SOA", "raw", soa, pa_soa, 0, cs_soa ), |
1007 | DEEP_TYPE(ptr_raw,"PTR", "raw", str, pa_host_raw,0, cs_domain ), |
1008 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair, pa_hinfo, 0, cs_hinfo ), |
1009 | DEEP_TYPE(mx_raw, "MX", "raw", intstr, pa_mx_raw, di_mx_raw, cs_inthost ), |
1010 | DEEP_TYPE(txt, "TXT", 0, manyistr, pa_txt, 0, cs_txt ), |
1011 | DEEP_TYPE(rp_raw, "RP", "raw", strpair, pa_rp, 0, cs_rp ), |
1012 | |
1013 | FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ), |
1014 | DEEP_TYPE(ns, "NS", "+addr", hostaddr, pa_hostaddr,di_hostaddr,cs_hostaddr ), |
1015 | DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ), |
1016 | DEEP_TYPE(mx, "MX", "+addr", inthostaddr,pa_mx, di_mx, cs_inthostaddr), |
1017 | |
1018 | DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ), |
1019 | DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ), |
5c596e4d |
1020 | }; |
1021 | |
c9afe7bb |
1022 | const typeinfo *adns__findtype(adns_rrtype type) { |
1023 | const typeinfo *begin, *end, *mid; |
5c596e4d |
1024 | |
1025 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1026 | |
1027 | while (begin < end) { |
1028 | mid= begin + ((end-begin)>>1); |
1029 | if (mid->type == type) return mid; |
1030 | if (type > mid->type) begin= mid+1; |
1031 | else end= mid; |
1032 | } |
1033 | return 0; |
1034 | } |