Commit | Line | Data |
---|---|---|
e576be50 | 1 | /* |
2 | * types.c | |
3 | * - RR-type-specific code, and the machinery to call it | |
4 | */ | |
5 | /* | |
ae8cc977 | 6 | * This file is part of adns, which is |
7 | * Copyright (C) 1997-2000,2003,2006 Ian Jackson | |
8 | * Copyright (C) 1999-2000,2003,2006 Tony Finch | |
9 | * Copyright (C) 1991 Massachusetts Institute of Technology | |
10 | * (See the file INSTALL for full details.) | |
e576be50 | 11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2, or (at your option) | |
15 | * any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
98a3f706 | 26 | |
1b644113 | 27 | #include <stdlib.h> |
28 | ||
0f091044 | 29 | #include <sys/types.h> |
71a6ff46 | 30 | #include <sys/socket.h> |
31 | #include <netinet/in.h> | |
86e7b8d9 | 32 | #include <arpa/inet.h> |
33 | ||
98a3f706 | 34 | #include "internal.h" |
35 | ||
609133ee | 36 | #define R_NOMEM return adns_s_nomemory |
37 | #define CSP_ADDSTR(s) do { \ | |
38 | if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; \ | |
39 | } while (0) | |
1dfe95d8 | 40 | |
eb81d633 | 41 | /* |
42 | * order of sections: | |
43 | * | |
9ec44266 | 44 | * _string (pap) |
eb81d633 | 45 | * _textdata, _qstring (csp) |
46 | * _str (mf,cs) | |
9ec44266 | 47 | * _intstr (mf,csp,cs) |
eb81d633 | 48 | * _manyistr (mf,cs) |
49 | * _txt (pa) | |
b0e8338a MW |
50 | * _inaddr (pa,di,cs |
51 | * +search_sortlist, dip_genaddr, csp_genaddr) | |
50e2b0c3 | 52 | * _in6addr (pa,di,cs) |
f930c455 MW |
53 | * _addr (pa,di,div,csp,cs,gsz |
54 | * +search_sortlist_sa, dip_sockaddr) | |
382b81f7 MW |
55 | * _domain (pap,csp,cs) |
56 | * _dom_raw (pa) | |
eb81d633 | 57 | * _host_raw (pa) |
382b81f7 MW |
58 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs |
59 | * +pap_findaddrs, icb_hostaddr) | |
eb81d633 | 60 | * _mx_raw (pa,di) |
61 | * _mx (pa,di) | |
62 | * _inthostaddr (mf,cs) | |
382b81f7 | 63 | * _inthost (cs) |
938b0228 | 64 | * _ptr (ckl,pa +icb_ptr) |
382b81f7 MW |
65 | * _strpair (mf) |
66 | * _intstrpair (mf) | |
9ec44266 | 67 | * _hinfo (pa) |
382b81f7 MW |
68 | * _mailbox (pap,csp +pap_mailbox822) |
69 | * _rp (pa,cs) | |
9ec44266 | 70 | * _soa (pa,mf,cs) |
e8e5aeac | 71 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
2c6eb096 | 72 | * _byteblock (mf) |
73 | * _opaque (pa,cs) | |
eb81d633 | 74 | * _flat (mf) |
75 | * | |
76 | * within each section: | |
e8e5aeac | 77 | * ckl_* |
eb81d633 | 78 | * pap_* |
79 | * pa_* | |
80 | * dip_* | |
81 | * di_* | |
82 | * mfp_* | |
83 | * mf_* | |
84 | * csp_* | |
85 | * cs_* | |
b0a32b17 | 86 | * gsz_* |
d24e2a7e | 87 | * postsort_* |
13826233 | 88 | * qs_* |
eb81d633 | 89 | */ |
90 | ||
91 | /* | |
b365d68a | 92 | * _qstring (pap,csp) |
eb81d633 | 93 | */ |
94 | ||
b365d68a | 95 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
9ec44266 | 96 | int *len_r, char **str_r) { |
97 | /* Neither len_r nor str_r may be null. | |
98 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; | |
99 | */ | |
100 | const byte *dgram= pai->dgram; | |
101 | int l, cbyte; | |
102 | char *str; | |
103 | ||
104 | cbyte= *cbyte_io; | |
105 | ||
106 | if (cbyte >= max) return adns_s_invaliddata; | |
107 | GET_B(cbyte,l); | |
108 | if (cbyte+l > max) return adns_s_invaliddata; | |
109 | ||
110 | str= adns__alloc_interim(pai->qu, l+1); | |
111 | if (!str) R_NOMEM; | |
112 | ||
113 | str[l]= 0; | |
114 | memcpy(str,dgram+cbyte,l); | |
115 | ||
116 | *len_r= l; | |
117 | *str_r= str; | |
118 | *cbyte_io= cbyte+l; | |
119 | ||
120 | return adns_s_ok; | |
121 | } | |
122 | ||
b365d68a | 123 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
eb81d633 | 124 | unsigned char ch; |
125 | char buf[10]; | |
126 | int cn; | |
127 | ||
128 | CSP_ADDSTR("\""); | |
129 | for (cn=0; cn<len; cn++) { | |
130 | ch= *dp++; | |
b365d68a | 131 | if (ch == '\\') { |
9ec44266 | 132 | CSP_ADDSTR("\\\\"); |
b365d68a | 133 | } else if (ch == '"') { |
134 | CSP_ADDSTR("\\\""); | |
135 | } else if (ch >= 32 && ch <= 126) { | |
136 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; | |
eb81d633 | 137 | } else { |
9ec44266 | 138 | sprintf(buf,"\\x%02x",ch); |
eb81d633 | 139 | CSP_ADDSTR(buf); |
140 | } | |
141 | } | |
142 | CSP_ADDSTR("\""); | |
143 | ||
144 | return adns_s_ok; | |
145 | } | |
146 | ||
eb81d633 | 147 | /* |
b365d68a | 148 | * _str (mf) |
eb81d633 | 149 | */ |
150 | ||
151 | static void mf_str(adns_query qu, void *datap) { | |
152 | char **rrp= datap; | |
153 | ||
154 | adns__makefinal_str(qu,rrp); | |
155 | } | |
156 | ||
eb81d633 | 157 | /* |
b365d68a | 158 | * _intstr (mf) |
eb81d633 | 159 | */ |
160 | ||
161 | static void mf_intstr(adns_query qu, void *datap) { | |
162 | adns_rr_intstr *rrp= datap; | |
163 | ||
164 | adns__makefinal_str(qu,&rrp->str); | |
165 | } | |
166 | ||
eb81d633 | 167 | /* |
b365d68a | 168 | * _manyistr (mf) |
eb81d633 | 169 | */ |
170 | ||
171 | static void mf_manyistr(adns_query qu, void *datap) { | |
172 | adns_rr_intstr **rrp= datap; | |
173 | adns_rr_intstr *te, *table; | |
174 | void *tablev; | |
175 | int tc; | |
176 | ||
177 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); | |
178 | tablev= *rrp; | |
179 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); | |
180 | *rrp= table= tablev; | |
181 | for (te= *rrp; te->i >= 0; te++) | |
182 | adns__makefinal_str(qu,&te->str); | |
183 | } | |
184 | ||
eb81d633 | 185 | /* |
b365d68a | 186 | * _txt (pa,cs) |
eb81d633 | 187 | */ |
188 | ||
609133ee | 189 | static adns_status pa_txt(const parseinfo *pai, int cbyte, |
190 | int max, void *datap) { | |
eb81d633 | 191 | adns_rr_intstr **rrp= datap, *table, *te; |
192 | const byte *dgram= pai->dgram; | |
193 | int ti, tc, l, startbyte; | |
9ec44266 | 194 | adns_status st; |
eb81d633 | 195 | |
196 | startbyte= cbyte; | |
197 | if (cbyte >= max) return adns_s_invaliddata; | |
198 | tc= 0; | |
199 | while (cbyte < max) { | |
200 | GET_B(cbyte,l); | |
201 | cbyte+= l; | |
9ec44266 | 202 | tc++; |
eb81d633 | 203 | } |
b365d68a | 204 | if (cbyte != max || !tc) return adns_s_invaliddata; |
eb81d633 | 205 | |
206 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); | |
207 | if (!table) R_NOMEM; | |
208 | ||
209 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { | |
b365d68a | 210 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
9ec44266 | 211 | if (st) return st; |
eb81d633 | 212 | } |
213 | assert(cbyte == max); | |
214 | ||
215 | te->i= -1; | |
216 | te->str= 0; | |
217 | ||
218 | *rrp= table; | |
219 | return adns_s_ok; | |
828d89bd | 220 | } |
221 | ||
b365d68a | 222 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
223 | const adns_rr_intstr *const *rrp= datap; | |
224 | const adns_rr_intstr *current; | |
225 | adns_status st; | |
226 | int spc; | |
227 | ||
228 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { | |
229 | if (spc) CSP_ADDSTR(" "); | |
230 | st= csp_qstring(vb,current->str,current->i); if (st) return st; | |
231 | } | |
232 | return adns_s_ok; | |
233 | } | |
234 | ||
235 | /* | |
236 | * _hinfo (cs) | |
237 | */ | |
238 | ||
239 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { | |
240 | const adns_rr_intstrpair *rrp= datap; | |
241 | adns_status st; | |
242 | ||
243 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; | |
244 | CSP_ADDSTR(" "); | |
245 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; | |
246 | return adns_s_ok; | |
247 | } | |
248 | ||
eb81d633 | 249 | /* |
b0e8338a | 250 | * _inaddr (pa,di,cs +search_sortlist, dip_genaddr, csp_genaddr) |
eb81d633 | 251 | */ |
252 | ||
609133ee | 253 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, |
254 | int max, void *datap) { | |
e062dcae | 255 | struct in_addr *storeto= datap; |
e7a9ca47 | 256 | |
257 | if (max-cbyte != 4) return adns_s_invaliddata; | |
1dfe95d8 | 258 | memcpy(storeto, pai->dgram + cbyte, 4); |
e7a9ca47 | 259 | return adns_s_ok; |
260 | } | |
261 | ||
f930c455 | 262 | static int search_sortlist(adns_state ads, int af, const void *ad) { |
09957b1c | 263 | const struct sortlist *slp; |
477b9c0b MW |
264 | const struct in6_addr *a6; |
265 | union gen_addr a; | |
09957b1c | 266 | int i; |
477b9c0b MW |
267 | int v6mappedp= 0; |
268 | ||
269 | if (af == AF_INET6) { | |
270 | a6= ad; | |
271 | if (IN6_IS_ADDR_V4MAPPED(a6)) { | |
272 | a.v4.s_addr= htonl(((unsigned long)a6->s6_addr[12] << 24) | | |
273 | ((unsigned long)a6->s6_addr[13] << 16) | | |
274 | ((unsigned long)a6->s6_addr[14] << 8) | | |
275 | ((unsigned long)a6->s6_addr[15] << 0)); | |
276 | v6mappedp= 1; | |
277 | } | |
278 | } | |
279 | ||
09957b1c | 280 | for (i=0, slp=ads->sortlist; |
609133ee | 281 | i<ads->nsortlist && |
477b9c0b MW |
282 | !adns__addr_match_p(af,ad, slp->af,&slp->base,&slp->mask) && |
283 | !(v6mappedp && | |
284 | adns__addr_match_p(AF_INET,&a, slp->af,&slp->base,&slp->mask)); | |
09957b1c | 285 | i++, slp++); |
286 | return i; | |
eb81d633 | 287 | } |
288 | ||
f930c455 | 289 | static int dip_genaddr(adns_state ads, int af, const void *a, const void *b) { |
09957b1c | 290 | int ai, bi; |
291 | ||
292 | if (!ads->nsortlist) return 0; | |
293 | ||
f930c455 MW |
294 | ai= search_sortlist(ads,af,a); |
295 | bi= search_sortlist(ads,af,b); | |
09957b1c | 296 | return bi<ai; |
297 | } | |
298 | ||
609133ee | 299 | static int di_inaddr(adns_state ads, |
300 | const void *datap_a, const void *datap_b) { | |
f930c455 | 301 | return dip_genaddr(ads,AF_INET,datap_a,datap_b); |
e062dcae | 302 | } |
303 | ||
b0e8338a MW |
304 | static adns_status csp_genaddr(vbuf *vb, int af, const void *p) { |
305 | char buf[ADNS_ADDR2TEXT_BUFLEN]; | |
306 | int len= sizeof(buf); | |
307 | adns_rr_addr a; | |
308 | int err; | |
309 | ||
310 | memset(&a, 0, sizeof(a)); | |
311 | a.addr.sa.sa_family= af; | |
312 | adns__sockaddr_inject(p, 0, &a.addr.sa); | |
313 | err= adns_addr2text(&a.addr.sa,0, buf,&len, 0); assert(!err); | |
314 | CSP_ADDSTR(buf); | |
1dfe95d8 | 315 | return adns_s_ok; |
86e7b8d9 | 316 | } |
e7a9ca47 | 317 | |
b0e8338a MW |
318 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { |
319 | return csp_genaddr(vb, AF_INET,datap); | |
320 | } | |
321 | ||
eb81d633 | 322 | /* |
50e2b0c3 MW |
323 | * _in6addr (pa,di,cs) |
324 | */ | |
325 | ||
326 | static adns_status pa_in6addr(const parseinfo *pai, int cbyte, | |
327 | int max, void *datap) { | |
328 | struct in6_addr *storeto= datap; | |
329 | ||
330 | if (max-cbyte != 16) return adns_s_invaliddata; | |
331 | memcpy(storeto->s6_addr, pai->dgram + cbyte, 16); | |
332 | return adns_s_ok; | |
333 | } | |
334 | ||
335 | static int di_in6addr(adns_state ads, | |
336 | const void *datap_a, const void *datap_b) { | |
337 | return dip_genaddr(ads,AF_INET6,datap_a,datap_b); | |
338 | } | |
339 | ||
340 | static adns_status cs_in6addr(vbuf *vb, const void *datap) { | |
341 | return csp_genaddr(vb,AF_INET6,datap); | |
342 | } | |
343 | ||
344 | /* | |
f930c455 | 345 | * _addr (pa,di,div,csp,cs,gsz +search_sortlist_sa, dip_sockaddr) |
eb81d633 | 346 | */ |
347 | ||
609133ee | 348 | static adns_status pa_addr(const parseinfo *pai, int cbyte, |
349 | int max, void *datap) { | |
551ff40f | 350 | adns_rr_addr *storeto= datap; |
1dfe95d8 | 351 | const byte *dgram= pai->dgram; |
c7836bc9 | 352 | |
828d89bd | 353 | if (max-cbyte != 4) return adns_s_invaliddata; |
354 | storeto->len= sizeof(storeto->addr.inet); | |
355 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); | |
356 | storeto->addr.inet.sin_family= AF_INET; | |
828d89bd | 357 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
358 | return adns_s_ok; | |
359 | } | |
360 | ||
f930c455 | 361 | static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa) { |
07554ccd MW |
362 | union gen_addr a; |
363 | adns__sockaddr_extract(sa, &a, 0); | |
364 | return search_sortlist(ads, sa->sa_family, &a); | |
f930c455 | 365 | } |
07554ccd | 366 | |
f930c455 MW |
367 | static int dip_sockaddr(adns_state ads, |
368 | const struct sockaddr *sa, | |
369 | const struct sockaddr *sb) { | |
370 | if (!ads->sortlist) return 0; | |
371 | return search_sortlist_sa(ads, sa) > search_sortlist_sa(ads, sb); | |
372 | } | |
373 | ||
09957b1c | 374 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
551ff40f | 375 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
f930c455 | 376 | return dip_sockaddr(ads, &ap->addr.sa, &bp->addr.sa); |
828d89bd | 377 | } |
378 | ||
09957b1c | 379 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
380 | const adns_state ads= context; | |
381 | ||
382 | return di_addr(ads, datap_a, datap_b); | |
383 | } | |
384 | ||
551ff40f | 385 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
b0e8338a MW |
386 | char buf[ADNS_ADDR2TEXT_BUFLEN]; |
387 | int len= sizeof(buf); | |
388 | int err; | |
828d89bd | 389 | |
390 | switch (rrp->addr.inet.sin_family) { | |
391 | case AF_INET: | |
b365d68a | 392 | CSP_ADDSTR("INET "); |
b0e8338a MW |
393 | goto a2t; |
394 | case AF_INET6: | |
395 | CSP_ADDSTR("INET6 "); | |
396 | goto a2t; | |
397 | a2t: | |
398 | err= adns_addr2text(&rrp->addr.sa,0, buf,&len, 0); assert(!err); | |
399 | CSP_ADDSTR(buf); | |
828d89bd | 400 | break; |
401 | default: | |
402 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); | |
1dfe95d8 | 403 | CSP_ADDSTR(buf); |
828d89bd | 404 | break; |
405 | } | |
406 | return adns_s_ok; | |
407 | } | |
408 | ||
1dfe95d8 | 409 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
551ff40f | 410 | const adns_rr_addr *rrp= datap; |
1dfe95d8 | 411 | |
412 | return csp_addr(vb,rrp); | |
413 | } | |
414 | ||
b0a32b17 MW |
415 | static int gsz_addr(const typeinfo *typei, adns_rrtype type) { |
416 | return type & adns__qtf_bigaddr ? | |
417 | sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only); | |
418 | } | |
419 | ||
eb81d633 | 420 | /* |
b365d68a | 421 | * _domain (pap,csp,cs) |
422 | * _dom_raw (pa) | |
eb81d633 | 423 | */ |
424 | ||
1dfe95d8 | 425 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
426 | char **domain_r, parsedomain_flags flags) { | |
e062dcae | 427 | adns_status st; |
428 | char *dm; | |
429 | ||
1dfe95d8 | 430 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
431 | pai->dgram,pai->dglen, cbyte_io, max); | |
e062dcae | 432 | if (st) return st; |
1dfe95d8 | 433 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
e062dcae | 434 | |
1dfe95d8 | 435 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
436 | if (!dm) R_NOMEM; | |
e062dcae | 437 | |
1dfe95d8 | 438 | dm[pai->qu->vb.used]= 0; |
439 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); | |
e062dcae | 440 | |
441 | *domain_r= dm; | |
442 | return adns_s_ok; | |
443 | } | |
444 | ||
b365d68a | 445 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
446 | CSP_ADDSTR(domain); | |
447 | if (!*domain) CSP_ADDSTR("."); | |
448 | return adns_s_ok; | |
449 | } | |
450 | ||
451 | static adns_status cs_domain(vbuf *vb, const void *datap) { | |
452 | const char *const *domainp= datap; | |
453 | return csp_domain(vb,*domainp); | |
454 | } | |
455 | ||
609133ee | 456 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, |
457 | int max, void *datap) { | |
b365d68a | 458 | char **rrp= datap; |
459 | adns_status st; | |
460 | ||
461 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); | |
462 | if (st) return st; | |
463 | ||
464 | if (cbyte != max) return adns_s_invaliddata; | |
465 | return adns_s_ok; | |
466 | } | |
467 | ||
eb81d633 | 468 | /* |
469 | * _host_raw (pa) | |
470 | */ | |
471 | ||
609133ee | 472 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, |
473 | int max, void *datap) { | |
e062dcae | 474 | char **rrp= datap; |
ffbda80c | 475 | adns_status st; |
86e7b8d9 | 476 | |
1dfe95d8 | 477 | st= pap_domain(pai, &cbyte, max, rrp, |
478 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
e062dcae | 479 | if (st) return st; |
480 | ||
481 | if (cbyte != max) return adns_s_invaliddata; | |
482 | return adns_s_ok; | |
483 | } | |
ffbda80c | 484 | |
eb81d633 | 485 | /* |
382b81f7 | 486 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs, icb_hostaddr) |
eb81d633 | 487 | */ |
c7836bc9 | 488 | |
1dfe95d8 | 489 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
b0a32b17 | 490 | size_t addrsz, |
1dfe95d8 | 491 | int *cbyte_io, int count, int dmstart) { |
492 | int rri, naddrs; | |
c7836bc9 | 493 | int type, class, rdlen, rdstart, ownermatched; |
73dba56e | 494 | unsigned long ttl; |
1dfe95d8 | 495 | adns_status st; |
c7836bc9 | 496 | |
1dfe95d8 | 497 | for (rri=0, naddrs=-1; rri<count; rri++) { |
609133ee | 498 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, |
499 | pai->dglen, cbyte_io, | |
73dba56e | 500 | &type, &class, &ttl, &rdlen, &rdstart, |
1dfe95d8 | 501 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
c7836bc9 | 502 | if (st) return st; |
1dfe95d8 | 503 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
504 | if (naddrs>0) break; else continue; | |
505 | } | |
506 | if (naddrs == -1) { | |
507 | naddrs= 0; | |
c7836bc9 | 508 | } |
b0a32b17 | 509 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) |
609133ee | 510 | R_NOMEM; |
73dba56e | 511 | adns__update_expires(pai->qu,ttl,pai->now); |
b0a32b17 | 512 | st= pa_addr(pai, rdstart,rdstart+rdlen, pai->qu->vb.buf + naddrs*addrsz); |
c7836bc9 | 513 | if (st) return st; |
1dfe95d8 | 514 | naddrs++; |
c7836bc9 | 515 | } |
1dfe95d8 | 516 | if (naddrs >= 0) { |
b0a32b17 | 517 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*addrsz); |
1dfe95d8 | 518 | if (!ha->addrs) R_NOMEM; |
b0a32b17 | 519 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*addrsz); |
1dfe95d8 | 520 | ha->naddrs= naddrs; |
c7836bc9 | 521 | ha->astatus= adns_s_ok; |
1dfe95d8 | 522 | |
b0a32b17 | 523 | adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf, |
09957b1c | 524 | div_addr, pai->ads); |
c7836bc9 | 525 | } |
526 | return adns_s_ok; | |
527 | } | |
528 | ||
551ff40f | 529 | static void icb_hostaddr(adns_query parent, adns_query child) { |
551ff40f | 530 | adns_answer *cans= child->answer; |
0ea82d76 | 531 | adns_rr_hostaddr *rrp= child->ctx.pinfo.hostaddr; |
4218fb9a | 532 | adns_state ads= parent->ads; |
b365d68a | 533 | adns_status st; |
551ff40f | 534 | |
b365d68a | 535 | st= cans->status; |
536 | rrp->astatus= st; | |
537 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs; | |
551ff40f | 538 | rrp->addrs= cans->rrs.addr; |
2edb1757 | 539 | adns__transfer_interim(child, parent, rrp->addrs); |
a6536d8b | 540 | |
4218fb9a | 541 | if (parent->children.head) { |
542 | LIST_LINK_TAIL(ads->childw,parent); | |
543 | } else { | |
544 | adns__query_done(parent); | |
545 | } | |
551ff40f | 546 | } |
547 | ||
1dfe95d8 | 548 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
549 | int max, adns_rr_hostaddr *rrp) { | |
c7836bc9 | 550 | adns_status st; |
551 | int dmstart, cbyte; | |
7da21070 | 552 | qcontext ctx; |
553 | int id; | |
554 | adns_query nqu; | |
4b707d8b | 555 | adns_queryflags nflags; |
b0a32b17 | 556 | size_t addrsz= gsz_addr(0, pai->qu->answer->type); |
c7836bc9 | 557 | |
558 | dmstart= cbyte= *cbyte_io; | |
1dfe95d8 | 559 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
560 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
c7836bc9 | 561 | if (st) return st; |
562 | *cbyte_io= cbyte; | |
563 | ||
564 | rrp->astatus= adns_s_ok; | |
565 | rrp->naddrs= -1; | |
566 | rrp->addrs= 0; | |
567 | ||
1dfe95d8 | 568 | cbyte= pai->nsstart; |
c7836bc9 | 569 | |
b0a32b17 | 570 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->nscount, dmstart); |
c7836bc9 | 571 | if (st) return st; |
572 | if (rrp->naddrs != -1) return adns_s_ok; | |
573 | ||
b0a32b17 | 574 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->arcount, dmstart); |
c7836bc9 | 575 | if (st) return st; |
576 | if (rrp->naddrs != -1) return adns_s_ok; | |
1dfe95d8 | 577 | |
7da21070 | 578 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
579 | pai->dgram, pai->dglen, dmstart, | |
580 | adns_r_addr, adns_qf_quoteok_query); | |
581 | if (st) return st; | |
551ff40f | 582 | |
a6536d8b | 583 | ctx.ext= 0; |
584 | ctx.callback= icb_hostaddr; | |
0ea82d76 MW |
585 | ctx.pinfo.hostaddr= rrp; |
586 | memset(&ctx.tinfo, 0, sizeof(ctx.tinfo)); | |
4b707d8b | 587 | |
588 | nflags= adns_qf_quoteok_query; | |
589 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; | |
590 | ||
7da21070 | 591 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
7f593711 MW |
592 | ((adns_r_addr & adns_rrt_reprmask) | |
593 | (pai->qu->answer->type & ~adns_rrt_reprmask)), | |
660d7d3b | 594 | &pai->qu->vb, id, nflags, pai->now, &ctx); |
7da21070 | 595 | if (st) return st; |
596 | ||
597 | nqu->parent= pai->qu; | |
598 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
1dfe95d8 | 599 | |
600 | return adns_s_ok; | |
c7836bc9 | 601 | } |
602 | ||
609133ee | 603 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, |
604 | int max, void *datap) { | |
1dfe95d8 | 605 | adns_rr_hostaddr *rrp= datap; |
c7836bc9 | 606 | adns_status st; |
c7836bc9 | 607 | |
1dfe95d8 | 608 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
c7836bc9 | 609 | if (st) return st; |
610 | if (cbyte != max) return adns_s_invaliddata; | |
611 | ||
1dfe95d8 | 612 | return adns_s_ok; |
613 | } | |
c7836bc9 | 614 | |
609133ee | 615 | static int dip_hostaddr(adns_state ads, |
616 | const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { | |
1dfe95d8 | 617 | if (ap->astatus != bp->astatus) return ap->astatus; |
618 | if (ap->astatus) return 0; | |
c7836bc9 | 619 | |
f930c455 | 620 | return dip_sockaddr(ads, &ap->addrs[0].addr.sa, &bp->addrs[0].addr.sa); |
1dfe95d8 | 621 | } |
622 | ||
609133ee | 623 | static int di_hostaddr(adns_state ads, |
624 | const void *datap_a, const void *datap_b) { | |
1dfe95d8 | 625 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
626 | ||
09957b1c | 627 | return dip_hostaddr(ads, ap,bp); |
c7836bc9 | 628 | } |
629 | ||
eb81d633 | 630 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
631 | void *tablev; | |
b0a32b17 | 632 | size_t addrsz= gsz_addr(0, qu->answer->type); |
e062dcae | 633 | |
eb81d633 | 634 | adns__makefinal_str(qu,&rrp->host); |
635 | tablev= rrp->addrs; | |
b0a32b17 | 636 | adns__makefinal_block(qu, &tablev, rrp->naddrs*addrsz); |
eb81d633 | 637 | rrp->addrs= tablev; |
e062dcae | 638 | } |
639 | ||
eb81d633 | 640 | static void mf_hostaddr(adns_query qu, void *datap) { |
641 | adns_rr_hostaddr *rrp= datap; | |
e062dcae | 642 | |
eb81d633 | 643 | mfp_hostaddr(qu,rrp); |
e062dcae | 644 | } |
645 | ||
1dfe95d8 | 646 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
a6f1dc92 | 647 | const char *errstr; |
1dfe95d8 | 648 | adns_status st; |
ac77ffc1 | 649 | char buf[20]; |
1dfe95d8 | 650 | int i; |
651 | ||
a6f1dc92 | 652 | st= csp_domain(vb,rrp->host); if (st) return st; |
1dfe95d8 | 653 | |
b365d68a | 654 | CSP_ADDSTR(" "); |
ac77ffc1 | 655 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
656 | ||
657 | sprintf(buf," %d ",rrp->astatus); | |
658 | CSP_ADDSTR(buf); | |
a6f1dc92 | 659 | |
ac77ffc1 | 660 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
a6f1dc92 | 661 | CSP_ADDSTR(" "); |
ac77ffc1 | 662 | |
a6f1dc92 | 663 | errstr= adns_strerror(rrp->astatus); |
664 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; | |
b365d68a | 665 | |
666 | if (rrp->naddrs >= 0) { | |
667 | CSP_ADDSTR(" ("); | |
668 | for (i=0; i<rrp->naddrs; i++) { | |
669 | CSP_ADDSTR(" "); | |
1dfe95d8 | 670 | st= csp_addr(vb,&rrp->addrs[i]); |
671 | } | |
b365d68a | 672 | CSP_ADDSTR(" )"); |
673 | } else { | |
674 | CSP_ADDSTR(" ?"); | |
1dfe95d8 | 675 | } |
676 | return adns_s_ok; | |
677 | } | |
678 | ||
679 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { | |
680 | const adns_rr_hostaddr *rrp= datap; | |
681 | ||
682 | return csp_hostaddr(vb,rrp); | |
683 | } | |
684 | ||
eb81d633 | 685 | /* |
686 | * _mx_raw (pa,di) | |
687 | */ | |
1dfe95d8 | 688 | |
609133ee | 689 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, |
690 | int max, void *datap) { | |
eb81d633 | 691 | const byte *dgram= pai->dgram; |
692 | adns_rr_intstr *rrp= datap; | |
693 | adns_status st; | |
694 | int pref; | |
1dfe95d8 | 695 | |
eb81d633 | 696 | if (cbyte+2 > max) return adns_s_invaliddata; |
697 | GET_W(cbyte,pref); | |
698 | rrp->i= pref; | |
699 | st= pap_domain(pai, &cbyte, max, &rrp->str, | |
700 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
701 | if (st) return st; | |
1dfe95d8 | 702 | |
eb81d633 | 703 | if (cbyte != max) return adns_s_invaliddata; |
704 | return adns_s_ok; | |
705 | } | |
1dfe95d8 | 706 | |
09957b1c | 707 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 708 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
709 | ||
710 | if (ap->i < bp->i) return 0; | |
711 | if (ap->i > bp->i) return 1; | |
712 | return 0; | |
1dfe95d8 | 713 | } |
714 | ||
eb81d633 | 715 | /* |
716 | * _mx (pa,di) | |
717 | */ | |
1dfe95d8 | 718 | |
609133ee | 719 | static adns_status pa_mx(const parseinfo *pai, int cbyte, |
720 | int max, void *datap) { | |
eb81d633 | 721 | const byte *dgram= pai->dgram; |
722 | adns_rr_inthostaddr *rrp= datap; | |
723 | adns_status st; | |
724 | int pref; | |
725 | ||
726 | if (cbyte+2 > max) return adns_s_invaliddata; | |
727 | GET_W(cbyte,pref); | |
728 | rrp->i= pref; | |
729 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); | |
730 | if (st) return st; | |
731 | ||
732 | if (cbyte != max) return adns_s_invaliddata; | |
733 | return adns_s_ok; | |
734 | } | |
735 | ||
09957b1c | 736 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 737 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
738 | ||
739 | if (ap->i < bp->i) return 0; | |
740 | if (ap->i > bp->i) return 1; | |
09957b1c | 741 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
1dfe95d8 | 742 | } |
743 | ||
eb81d633 | 744 | /* |
745 | * _inthostaddr (mf,cs) | |
746 | */ | |
747 | ||
1dfe95d8 | 748 | static void mf_inthostaddr(adns_query qu, void *datap) { |
749 | adns_rr_inthostaddr *rrp= datap; | |
750 | ||
751 | mfp_hostaddr(qu,&rrp->ha); | |
752 | } | |
753 | ||
eb81d633 | 754 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
755 | const adns_rr_inthostaddr *rrp= datap; | |
756 | char buf[10]; | |
e062dcae | 757 | |
eb81d633 | 758 | sprintf(buf,"%u ",rrp->i); |
759 | CSP_ADDSTR(buf); | |
760 | ||
761 | return csp_hostaddr(vb,&rrp->ha); | |
ffbda80c | 762 | } |
763 | ||
eb81d633 | 764 | /* |
b365d68a | 765 | * _inthost (cs) |
766 | */ | |
767 | ||
768 | static adns_status cs_inthost(vbuf *vb, const void *datap) { | |
769 | const adns_rr_intstr *rrp= datap; | |
770 | char buf[10]; | |
771 | ||
772 | sprintf(buf,"%u ",rrp->i); | |
773 | CSP_ADDSTR(buf); | |
774 | return csp_domain(vb,rrp->str); | |
775 | } | |
776 | ||
777 | /* | |
938b0228 | 778 | * _ptr (ckl,pa +icb_ptr) |
a6536d8b | 779 | */ |
780 | ||
938b0228 MW |
781 | static adns_status ckl_ptr(adns_state ads, adns_queryflags flags, |
782 | union checklabel_state *cls, qcontext *ctx, | |
783 | int labnum, const char *label, int lablen) { | |
51cb3de3 MW |
784 | if (lablen) { |
785 | if (adns__revparse_label(&cls->ptr, labnum, label,lablen)) | |
786 | return adns_s_querydomainwrong; | |
938b0228 | 787 | } else { |
51cb3de3 MW |
788 | if (adns__revparse_done(&cls->ptr, labnum, |
789 | &ctx->tinfo.ptr.rev_rrtype, | |
790 | &ctx->tinfo.ptr.addr)) | |
791 | return adns_s_querydomainwrong; | |
938b0228 MW |
792 | } |
793 | return adns_s_ok; | |
794 | } | |
795 | ||
a6536d8b | 796 | static void icb_ptr(adns_query parent, adns_query child) { |
797 | adns_answer *cans= child->answer; | |
f930c455 | 798 | const struct af_addr *queried; |
ac5a2748 | 799 | const unsigned char *found; |
4218fb9a | 800 | adns_state ads= parent->ads; |
a6536d8b | 801 | int i; |
802 | ||
803 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { | |
804 | adns__query_fail(parent,adns_s_inconsistent); | |
805 | return; | |
806 | } else if (cans->status) { | |
807 | adns__query_fail(parent,cans->status); | |
808 | return; | |
809 | } | |
810 | ||
ac5a2748 MW |
811 | queried= &parent->ctx.tinfo.ptr.addr; |
812 | for (i=0, found=cans->rrs.bytes; i<cans->nrrs; i++, found+=cans->rrsz) { | |
51cb3de3 MW |
813 | if (adns__genaddr_equal_p(queried->af,&queried->addr, |
814 | parent->ctx.tinfo.ptr.addr.af,found)) { | |
4218fb9a | 815 | if (!parent->children.head) { |
816 | adns__query_done(parent); | |
817 | return; | |
818 | } else { | |
819 | LIST_LINK_TAIL(ads->childw,parent); | |
820 | return; | |
821 | } | |
a6536d8b | 822 | } |
823 | } | |
824 | ||
825 | adns__query_fail(parent,adns_s_inconsistent); | |
826 | } | |
827 | ||
609133ee | 828 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, |
829 | int max, void *datap) { | |
a6536d8b | 830 | char **rrp= datap; |
831 | adns_status st; | |
51cb3de3 | 832 | adns_rrtype rrtype= pai->qu->ctx.tinfo.ptr.rev_rrtype; |
938b0228 | 833 | int cbyte, id; |
a6536d8b | 834 | adns_query nqu; |
835 | qcontext ctx; | |
836 | ||
837 | cbyte= dmstart; | |
838 | st= pap_domain(pai, &cbyte, max, rrp, | |
839 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
840 | if (st) return st; | |
841 | if (cbyte != max) return adns_s_invaliddata; | |
842 | ||
a6536d8b | 843 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
844 | pai->dgram, pai->dglen, dmstart, | |
51cb3de3 | 845 | rrtype, adns_qf_quoteok_query); |
a6536d8b | 846 | if (st) return st; |
847 | ||
848 | ctx.ext= 0; | |
849 | ctx.callback= icb_ptr; | |
0ea82d76 MW |
850 | memset(&ctx.pinfo,0,sizeof(ctx.pinfo)); |
851 | memset(&ctx.tinfo,0,sizeof(ctx.tinfo)); | |
51cb3de3 MW |
852 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(rrtype), |
853 | rrtype, &pai->qu->vb, id, | |
854 | adns_qf_quoteok_query, pai->now, &ctx); | |
a6536d8b | 855 | if (st) return st; |
856 | ||
857 | nqu->parent= pai->qu; | |
858 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
a6536d8b | 859 | return adns_s_ok; |
860 | } | |
861 | ||
862 | /* | |
b365d68a | 863 | * _strpair (mf) |
9ec44266 | 864 | */ |
865 | ||
866 | static void mf_strpair(adns_query qu, void *datap) { | |
867 | adns_rr_strpair *rrp= datap; | |
868 | ||
869 | adns__makefinal_str(qu,&rrp->array[0]); | |
870 | adns__makefinal_str(qu,&rrp->array[1]); | |
871 | } | |
872 | ||
9ec44266 | 873 | /* |
b365d68a | 874 | * _intstrpair (mf) |
9ec44266 | 875 | */ |
876 | ||
877 | static void mf_intstrpair(adns_query qu, void *datap) { | |
878 | adns_rr_intstrpair *rrp= datap; | |
879 | ||
880 | adns__makefinal_str(qu,&rrp->array[0].str); | |
881 | adns__makefinal_str(qu,&rrp->array[1].str); | |
882 | } | |
883 | ||
9ec44266 | 884 | /* |
885 | * _hinfo (pa) | |
886 | */ | |
887 | ||
609133ee | 888 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, |
889 | int max, void *datap) { | |
9ec44266 | 890 | adns_rr_intstrpair *rrp= datap; |
891 | adns_status st; | |
892 | int i; | |
893 | ||
894 | for (i=0; i<2; i++) { | |
b365d68a | 895 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
9ec44266 | 896 | if (st) return st; |
897 | } | |
898 | ||
899 | if (cbyte != max) return adns_s_invaliddata; | |
900 | ||
901 | return adns_s_ok; | |
902 | } | |
903 | ||
904 | /* | |
382b81f7 | 905 | * _mailbox (pap,cs +pap_mailbox822) |
9ec44266 | 906 | */ |
907 | ||
609133ee | 908 | static adns_status pap_mailbox822(const parseinfo *pai, |
909 | int *cbyte_io, int max, char **mb_r) { | |
eaa44731 | 910 | int lablen, labstart, i, needquote, c, r, neednorm; |
911 | const unsigned char *p; | |
912 | char *str; | |
913 | findlabel_state fls; | |
914 | adns_status st; | |
915 | vbuf *vb; | |
916 | ||
917 | vb= &pai->qu->vb; | |
918 | vb->used= 0; | |
919 | adns__findlabel_start(&fls, pai->ads, | |
920 | -1, pai->qu, | |
921 | pai->dgram, pai->dglen, max, | |
922 | *cbyte_io, cbyte_io); | |
923 | st= adns__findlabel_next(&fls,&lablen,&labstart); | |
924 | if (!lablen) { | |
b365d68a | 925 | adns__vbuf_appendstr(vb,"."); |
eaa44731 | 926 | goto x_ok; |
927 | } | |
928 | ||
929 | neednorm= 1; | |
930 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { | |
931 | c= *p++; | |
932 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; | |
933 | if (c == '.' && !neednorm) neednorm= 1; | |
7672a872 | 934 | else if (c==' ' || c>=127 || ctype_822special(c)) needquote++; |
eaa44731 | 935 | else neednorm= 0; |
936 | } | |
937 | ||
938 | if (needquote || neednorm) { | |
939 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; | |
940 | adns__vbuf_appendq(vb,"\"",1); | |
941 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { | |
942 | c= *p; | |
b365d68a | 943 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
eaa44731 | 944 | adns__vbuf_appendq(vb,p,1); |
945 | } | |
946 | adns__vbuf_appendq(vb,"\"",1); | |
947 | } else { | |
948 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; | |
949 | } | |
950 | ||
951 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; | |
952 | ||
953 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); | |
954 | if (st) return st; | |
955 | ||
956 | x_ok: | |
957 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; | |
958 | memcpy(str,vb->buf,vb->used); | |
959 | str[vb->used]= 0; | |
960 | *mb_r= str; | |
961 | return adns_s_ok; | |
9ec44266 | 962 | } |
963 | ||
9da4a044 | 964 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
965 | char **mb_r) { | |
2c6eb096 | 966 | if (pai->qu->typei->typekey & adns__qtf_mail822) { |
9da4a044 | 967 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
968 | } else { | |
b365d68a | 969 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
9da4a044 | 970 | } |
971 | } | |
972 | ||
b365d68a | 973 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
974 | return csp_domain(vb,mailbox); | |
975 | } | |
976 | ||
9ec44266 | 977 | /* |
b365d68a | 978 | * _rp (pa,cs) |
9ec44266 | 979 | */ |
980 | ||
609133ee | 981 | static adns_status pa_rp(const parseinfo *pai, int cbyte, |
982 | int max, void *datap) { | |
9ec44266 | 983 | adns_rr_strpair *rrp= datap; |
984 | adns_status st; | |
985 | ||
986 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); | |
987 | if (st) return st; | |
988 | ||
989 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); | |
990 | if (st) return st; | |
991 | ||
992 | if (cbyte != max) return adns_s_invaliddata; | |
993 | return adns_s_ok; | |
994 | } | |
995 | ||
b365d68a | 996 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
997 | const adns_rr_strpair *rrp= datap; | |
998 | adns_status st; | |
999 | ||
1000 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; | |
1001 | CSP_ADDSTR(" "); | |
1002 | st= csp_domain(vb,rrp->array[1]); if (st) return st; | |
1003 | ||
1004 | return adns_s_ok; | |
1005 | } | |
1006 | ||
9ec44266 | 1007 | /* |
1008 | * _soa (pa,mf,cs) | |
1009 | */ | |
1010 | ||
609133ee | 1011 | static adns_status pa_soa(const parseinfo *pai, int cbyte, |
1012 | int max, void *datap) { | |
9ec44266 | 1013 | adns_rr_soa *rrp= datap; |
1014 | const byte *dgram= pai->dgram; | |
1015 | adns_status st; | |
1016 | int msw, lsw, i; | |
1017 | ||
1018 | st= pap_domain(pai, &cbyte, max, &rrp->mname, | |
1019 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1020 | if (st) return st; | |
1021 | ||
1022 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); | |
1023 | if (st) return st; | |
1024 | ||
1025 | if (cbyte+20 != max) return adns_s_invaliddata; | |
1026 | ||
1027 | for (i=0; i<5; i++) { | |
1028 | GET_W(cbyte,msw); | |
1029 | GET_W(cbyte,lsw); | |
1030 | (&rrp->serial)[i]= (msw<<16) | lsw; | |
1031 | } | |
1032 | ||
1033 | return adns_s_ok; | |
1034 | } | |
1035 | ||
1036 | static void mf_soa(adns_query qu, void *datap) { | |
1037 | adns_rr_soa *rrp= datap; | |
1038 | ||
1039 | adns__makefinal_str(qu,&rrp->mname); | |
1040 | adns__makefinal_str(qu,&rrp->rname); | |
1041 | } | |
1042 | ||
1043 | static adns_status cs_soa(vbuf *vb, const void *datap) { | |
1044 | const adns_rr_soa *rrp= datap; | |
1045 | char buf[20]; | |
1046 | int i; | |
1047 | adns_status st; | |
1048 | ||
b365d68a | 1049 | st= csp_domain(vb,rrp->mname); if (st) return st; |
9ec44266 | 1050 | CSP_ADDSTR(" "); |
b365d68a | 1051 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
9ec44266 | 1052 | |
1053 | for (i=0; i<5; i++) { | |
1054 | sprintf(buf," %lu",(&rrp->serial)[i]); | |
1055 | CSP_ADDSTR(buf); | |
1056 | } | |
1057 | ||
1058 | return adns_s_ok; | |
1059 | } | |
1060 | ||
1061 | /* | |
e8e5aeac | 1062 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
d19b03d0 | 1063 | */ |
1064 | ||
e8e5aeac MW |
1065 | static adns_status ckl_srv(adns_state ads, adns_queryflags flags, |
1066 | union checklabel_state *cls, qcontext *ctx, | |
1067 | int labnum, const char *label, int lablen) { | |
1068 | if (labnum < 2 && !(flags & adns_qf_quoteok_query)) { | |
1069 | if (!lablen || label[0] != '_') return adns_s_querydomaininvalid; | |
1070 | return adns_s_ok; | |
d19b03d0 | 1071 | } |
e8e5aeac | 1072 | return adns__ckl_hostname(ads, flags, cls, ctx, labnum, label, lablen); |
d19b03d0 | 1073 | } |
1074 | ||
05fc6b3a | 1075 | static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max, |
0e45654b | 1076 | adns_rr_srvha *rrp |
1077 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1078 | const byte *dgram= pai->dgram; |
05fc6b3a | 1079 | int ti, cbyte; |
1080 | ||
1081 | cbyte= *cbyte_io; | |
1082 | if ((*cbyte_io += 6) > max) return adns_s_invaliddata; | |
401c256a | 1083 | |
1084 | rrp->priority= GET_W(cbyte, ti); | |
1085 | rrp->weight= GET_W(cbyte, ti); | |
1086 | rrp->port= GET_W(cbyte, ti); | |
1087 | return adns_s_ok; | |
1088 | } | |
1089 | ||
1090 | static adns_status pa_srvraw(const parseinfo *pai, int cbyte, | |
1091 | int max, void *datap) { | |
1092 | adns_rr_srvraw *rrp= datap; | |
1093 | adns_status st; | |
1094 | ||
05fc6b3a | 1095 | st= pap_srv_begin(pai,&cbyte,max,datap); |
401c256a | 1096 | if (st) return st; |
1097 | ||
1098 | st= pap_domain(pai, &cbyte, max, &rrp->host, | |
1099 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1100 | if (st) return st; | |
1101 | ||
1102 | if (cbyte != max) return adns_s_invaliddata; | |
1103 | return adns_s_ok; | |
1104 | } | |
1105 | ||
1106 | static adns_status pa_srvha(const parseinfo *pai, int cbyte, | |
1107 | int max, void *datap) { | |
1108 | adns_rr_srvha *rrp= datap; | |
1109 | adns_status st; | |
1110 | ||
05fc6b3a | 1111 | st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st; |
401c256a | 1112 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st; |
1113 | if (cbyte != max) return adns_s_invaliddata; | |
1114 | return adns_s_ok; | |
1115 | } | |
1116 | ||
1117 | static void mf_srvraw(adns_query qu, void *datap) { | |
1118 | adns_rr_srvraw *rrp= datap; | |
1119 | adns__makefinal_str(qu, &rrp->host); | |
1120 | } | |
1121 | ||
1122 | static void mf_srvha(adns_query qu, void *datap) { | |
1123 | adns_rr_srvha *rrp= datap; | |
1124 | mfp_hostaddr(qu,&rrp->ha); | |
1125 | } | |
1126 | ||
1127 | static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) { | |
1128 | const adns_rr_srvraw *ap= datap_a, *bp= datap_b; | |
1129 | /* might be const adns_rr_svhostaddr* */ | |
1130 | ||
1131 | if (ap->priority < bp->priority) return 0; | |
1132 | if (ap->priority > bp->priority) return 1; | |
1133 | return 0; | |
1134 | } | |
1135 | ||
0e45654b | 1136 | static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp |
1137 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1138 | char buf[30]; |
1139 | sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port); | |
1140 | CSP_ADDSTR(buf); | |
1141 | return adns_s_ok; | |
1142 | } | |
1143 | ||
1144 | static adns_status cs_srvraw(vbuf *vb, const void *datap) { | |
1145 | const adns_rr_srvraw *rrp= datap; | |
1146 | adns_status st; | |
1147 | ||
0e45654b | 1148 | st= csp_srv_begin(vb,(const void*)rrp); if (st) return st; |
401c256a | 1149 | return csp_domain(vb,rrp->host); |
1150 | } | |
1151 | ||
1152 | static adns_status cs_srvha(vbuf *vb, const void *datap) { | |
1153 | const adns_rr_srvha *rrp= datap; | |
1154 | adns_status st; | |
1155 | ||
0e45654b | 1156 | st= csp_srv_begin(vb,(const void*)datap); if (st) return st; |
401c256a | 1157 | return csp_hostaddr(vb,&rrp->ha); |
1158 | } | |
1159 | ||
042b0909 | 1160 | static void postsort_srv(adns_state ads, void *array, int nrrs,int rrsz, |
d24e2a7e | 1161 | const struct typeinfo *typei) { |
0e45654b | 1162 | /* we treat everything in the array as if it were an adns_rr_srvha |
1163 | * even though the array might be of adns_rr_srvraw. That's OK | |
1164 | * because they have the same prefix, which is all we access. | |
042b0909 | 1165 | * We use rrsz, too, rather than naive array indexing, of course. |
0e45654b | 1166 | */ |
1167 | char *workbegin, *workend, *search, *arrayend; | |
1168 | const adns_rr_srvha *rr; | |
1169 | union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp; | |
1170 | int cpriority, totalweight, runtotal; | |
1171 | long randval; | |
1172 | ||
042b0909 MW |
1173 | assert(rrsz <= sizeof(rrtmp)); |
1174 | for (workbegin= array, arrayend= workbegin + rrsz * nrrs; | |
0e45654b | 1175 | workbegin < arrayend; |
1176 | workbegin= workend) { | |
1177 | cpriority= (rr=(void*)workbegin)->priority; | |
1178 | ||
1179 | for (workend= workbegin, totalweight= 0; | |
1180 | workend < arrayend && (rr=(void*)workend)->priority == cpriority; | |
042b0909 | 1181 | workend += rrsz) { |
0e45654b | 1182 | totalweight += rr->weight; |
0e45654b | 1183 | } |
1184 | ||
1185 | /* Now workbegin..(workend-1) incl. are exactly all of the RRs of | |
1186 | * cpriority. From now on, workbegin points to the `remaining' | |
1187 | * records: we select one record at a time (RFC2782 `Usage rules' | |
1188 | * and `Format of the SRV RR' subsection `Weight') to place at | |
1189 | * workbegin (swapping with the one that was there, and then | |
1190 | * advance workbegin. */ | |
1191 | for (; | |
042b0909 MW |
1192 | workbegin + rrsz < workend; /* don't bother if just one */ |
1193 | workbegin += rrsz) { | |
0e45654b | 1194 | |
1195 | randval= nrand48(ads->rand48xsubi); | |
1196 | randval %= (totalweight + 1); | |
0e45654b | 1197 | /* makes it into 0..totalweight inclusive; with 2^10 RRs, |
1198 | * totalweight must be <= 2^26 so probability nonuniformity is | |
1199 | * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie | |
1200 | * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5). | |
1201 | */ | |
1202 | ||
1203 | for (search=workbegin, runtotal=0; | |
1204 | (runtotal += (rr=(void*)search)->weight) < randval; | |
042b0909 | 1205 | search += rrsz); |
0e45654b | 1206 | assert(search < arrayend); |
1207 | totalweight -= rr->weight; | |
1208 | if (search != workbegin) { | |
042b0909 MW |
1209 | memcpy(&rrtmp, workbegin, rrsz); |
1210 | memcpy(workbegin, search, rrsz); | |
1211 | memcpy(search, &rrtmp, rrsz); | |
0e45654b | 1212 | } |
1213 | } | |
1214 | } | |
d24e2a7e | 1215 | /* tests: |
1216 | * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. | |
1217 | * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk. | |
1218 | * ./adnshost_s -t srv- _jabber._tcp.jabber.org | |
1219 | */ | |
1220 | } | |
1221 | ||
d19b03d0 | 1222 | /* |
2c6eb096 | 1223 | * _byteblock (mf) |
1224 | */ | |
1225 | ||
1226 | static void mf_byteblock(adns_query qu, void *datap) { | |
1227 | adns_rr_byteblock *rrp= datap; | |
1228 | void *bytes= rrp->data; | |
1229 | adns__makefinal_block(qu,&bytes,rrp->len); | |
1230 | rrp->data= bytes; | |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * _opaque (pa,cs) | |
1235 | */ | |
1236 | ||
1237 | static adns_status pa_opaque(const parseinfo *pai, int cbyte, | |
1238 | int max, void *datap) { | |
1239 | adns_rr_byteblock *rrp= datap; | |
1240 | ||
1241 | rrp->len= max - cbyte; | |
1242 | rrp->data= adns__alloc_interim(pai->qu, rrp->len); | |
1243 | if (!rrp->data) R_NOMEM; | |
1244 | memcpy(rrp->data, pai->dgram + cbyte, rrp->len); | |
1245 | return adns_s_ok; | |
1246 | } | |
1247 | ||
1248 | static adns_status cs_opaque(vbuf *vb, const void *datap) { | |
1249 | const adns_rr_byteblock *rrp= datap; | |
1250 | char buf[10]; | |
1251 | int l; | |
1252 | unsigned char *p; | |
1253 | ||
1254 | sprintf(buf,"\\# %d",rrp->len); | |
1255 | CSP_ADDSTR(buf); | |
1256 | ||
1257 | for (l= rrp->len, p= rrp->data; | |
1258 | l>=4; | |
1259 | l -= 4, p += 4) { | |
1260 | sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]); | |
1261 | CSP_ADDSTR(buf); | |
1262 | } | |
1263 | for (; | |
1264 | l>0; | |
1265 | l--, p++) { | |
1266 | sprintf(buf," %02x",*p); | |
1267 | CSP_ADDSTR(buf); | |
1268 | } | |
1269 | return adns_s_ok; | |
1270 | } | |
1271 | ||
1272 | /* | |
eb81d633 | 1273 | * _flat (mf) |
1274 | */ | |
1275 | ||
ffbda80c | 1276 | static void mf_flat(adns_query qu, void *data) { } |
1277 | ||
eb81d633 | 1278 | /* |
1279 | * Now the table. | |
1280 | */ | |
1281 | ||
e062dcae | 1282 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
86e7b8d9 | 1283 | |
c5fd1fbb | 1284 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1285 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ |
c5fd1fbb | 1286 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
13826233 MW |
1287 | adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send, \ |
1288 | CDR(__VA_ARGS__) } | |
c5fd1fbb | 1289 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1290 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_flat, \ |
c5fd1fbb | 1291 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
13826233 MW |
1292 | adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send, \ |
1293 | CDR(__VA_ARGS__) } | |
c5fd1fbb MW |
1294 | |
1295 | #define di_0 0 | |
98a3f706 | 1296 | |
1297 | static const typeinfo typeinfos[] = { | |
eb81d633 | 1298 | /* Must be in ascending order of rrtype ! */ |
609133ee | 1299 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1300 | ||
c5fd1fbb MW |
1301 | FLAT_TYPE(a, "A", 0, inaddr, inaddr, inaddr,inaddr ), |
1302 | DEEP_TYPE(ns_raw, "NS", "raw",str, host_raw,0, domain ), | |
1303 | DEEP_TYPE(cname, "CNAME", 0, str, dom_raw, 0, domain ), | |
1304 | DEEP_TYPE(soa_raw,"SOA", "raw",soa, soa, 0, soa ), | |
1305 | DEEP_TYPE(ptr_raw,"PTR", "raw",str, host_raw,0, domain ), | |
1306 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,hinfo, 0, hinfo ), | |
1307 | DEEP_TYPE(mx_raw, "MX", "raw",intstr, mx_raw, mx_raw,inthost ), | |
1308 | DEEP_TYPE(txt, "TXT", 0, manyistr, txt, 0, txt ), | |
1309 | DEEP_TYPE(rp_raw, "RP", "raw",strpair, rp, 0, rp ), | |
50e2b0c3 | 1310 | FLAT_TYPE(aaaa, "AAAA", 0, in6addr, in6addr, in6addr,in6addr ), |
c5fd1fbb | 1311 | DEEP_TYPE(srv_raw,"SRV", "raw",srvraw , srvraw, srv, srvraw, |
e8e5aeac | 1312 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb | 1313 | |
b0a32b17 MW |
1314 | FLAT_TYPE(addr, "A", "addr", addr, addr, addr, addr, |
1315 | .getrrsz= gsz_addr), | |
c5fd1fbb | 1316 | DEEP_TYPE(ns, "NS", "+addr",hostaddr, hostaddr,hostaddr,hostaddr ), |
938b0228 MW |
1317 | DEEP_TYPE(ptr, "PTR","checked",str, ptr, 0, domain, |
1318 | .checklabel= ckl_ptr), | |
c5fd1fbb MW |
1319 | DEEP_TYPE(mx, "MX", "+addr",inthostaddr,mx, mx, inthostaddr, ), |
1320 | DEEP_TYPE(srv, "SRV","+addr",srvha, srvha, srv, srvha, | |
e8e5aeac | 1321 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb MW |
1322 | |
1323 | DEEP_TYPE(soa, "SOA","822", soa, soa, 0, soa ), | |
1324 | DEEP_TYPE(rp, "RP", "822", strpair, rp, 0, rp ), | |
98a3f706 | 1325 | }; |
1326 | ||
2c6eb096 | 1327 | static const typeinfo typeinfo_unknown= |
c5fd1fbb | 1328 | DEEP_TYPE(unknown,0, "unknown",byteblock,opaque, 0, opaque ); |
2c6eb096 | 1329 | |
f759e52e | 1330 | const typeinfo *adns__findtype(adns_rrtype type) { |
1331 | const typeinfo *begin, *end, *mid; | |
98a3f706 | 1332 | |
2c6eb096 | 1333 | if (type & adns_r_unknown) return &typeinfo_unknown; |
d24b603f | 1334 | type &= adns_rrt_reprmask; |
2c6eb096 | 1335 | |
98a3f706 | 1336 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1337 | ||
1338 | while (begin < end) { | |
1339 | mid= begin + ((end-begin)>>1); | |
2c6eb096 | 1340 | if (mid->typekey == type) return mid; |
1341 | if (type > mid->typekey) begin= mid+1; | |
98a3f706 | 1342 | else end= mid; |
1343 | } | |
1344 | return 0; | |
1345 | } |