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) | |
844e3556 MW |
50 | * _inaddr (pa,di,cs |
51 | * +search_sortlist, dip_genaddr, csp_genaddr) | |
0d244930 | 52 | * _in6addr (pa,di,cs) |
c0ec02b5 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) |
40206a7e | 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_* | |
ef7070af | 86 | * gsz_* |
d24e2a7e | 87 | * postsort_* |
eb81d633 | 88 | */ |
89 | ||
90 | /* | |
b365d68a | 91 | * _qstring (pap,csp) |
eb81d633 | 92 | */ |
93 | ||
b365d68a | 94 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
9ec44266 | 95 | int *len_r, char **str_r) { |
96 | /* Neither len_r nor str_r may be null. | |
97 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; | |
98 | */ | |
99 | const byte *dgram= pai->dgram; | |
100 | int l, cbyte; | |
101 | char *str; | |
102 | ||
103 | cbyte= *cbyte_io; | |
104 | ||
105 | if (cbyte >= max) return adns_s_invaliddata; | |
106 | GET_B(cbyte,l); | |
107 | if (cbyte+l > max) return adns_s_invaliddata; | |
108 | ||
109 | str= adns__alloc_interim(pai->qu, l+1); | |
110 | if (!str) R_NOMEM; | |
111 | ||
112 | str[l]= 0; | |
113 | memcpy(str,dgram+cbyte,l); | |
114 | ||
115 | *len_r= l; | |
116 | *str_r= str; | |
117 | *cbyte_io= cbyte+l; | |
118 | ||
119 | return adns_s_ok; | |
120 | } | |
121 | ||
b365d68a | 122 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
eb81d633 | 123 | unsigned char ch; |
124 | char buf[10]; | |
125 | int cn; | |
126 | ||
127 | CSP_ADDSTR("\""); | |
128 | for (cn=0; cn<len; cn++) { | |
129 | ch= *dp++; | |
b365d68a | 130 | if (ch == '\\') { |
9ec44266 | 131 | CSP_ADDSTR("\\\\"); |
b365d68a | 132 | } else if (ch == '"') { |
133 | CSP_ADDSTR("\\\""); | |
134 | } else if (ch >= 32 && ch <= 126) { | |
135 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; | |
eb81d633 | 136 | } else { |
9ec44266 | 137 | sprintf(buf,"\\x%02x",ch); |
eb81d633 | 138 | CSP_ADDSTR(buf); |
139 | } | |
140 | } | |
141 | CSP_ADDSTR("\""); | |
142 | ||
143 | return adns_s_ok; | |
144 | } | |
145 | ||
eb81d633 | 146 | /* |
b365d68a | 147 | * _str (mf) |
eb81d633 | 148 | */ |
149 | ||
150 | static void mf_str(adns_query qu, void *datap) { | |
151 | char **rrp= datap; | |
152 | ||
153 | adns__makefinal_str(qu,rrp); | |
154 | } | |
155 | ||
eb81d633 | 156 | /* |
b365d68a | 157 | * _intstr (mf) |
eb81d633 | 158 | */ |
159 | ||
160 | static void mf_intstr(adns_query qu, void *datap) { | |
161 | adns_rr_intstr *rrp= datap; | |
162 | ||
163 | adns__makefinal_str(qu,&rrp->str); | |
164 | } | |
165 | ||
eb81d633 | 166 | /* |
b365d68a | 167 | * _manyistr (mf) |
eb81d633 | 168 | */ |
169 | ||
170 | static void mf_manyistr(adns_query qu, void *datap) { | |
171 | adns_rr_intstr **rrp= datap; | |
172 | adns_rr_intstr *te, *table; | |
173 | void *tablev; | |
174 | int tc; | |
175 | ||
176 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); | |
177 | tablev= *rrp; | |
178 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); | |
179 | *rrp= table= tablev; | |
180 | for (te= *rrp; te->i >= 0; te++) | |
181 | adns__makefinal_str(qu,&te->str); | |
182 | } | |
183 | ||
eb81d633 | 184 | /* |
b365d68a | 185 | * _txt (pa,cs) |
eb81d633 | 186 | */ |
187 | ||
609133ee | 188 | static adns_status pa_txt(const parseinfo *pai, int cbyte, |
189 | int max, void *datap) { | |
eb81d633 | 190 | adns_rr_intstr **rrp= datap, *table, *te; |
191 | const byte *dgram= pai->dgram; | |
192 | int ti, tc, l, startbyte; | |
9ec44266 | 193 | adns_status st; |
eb81d633 | 194 | |
195 | startbyte= cbyte; | |
196 | if (cbyte >= max) return adns_s_invaliddata; | |
197 | tc= 0; | |
198 | while (cbyte < max) { | |
199 | GET_B(cbyte,l); | |
200 | cbyte+= l; | |
9ec44266 | 201 | tc++; |
eb81d633 | 202 | } |
b365d68a | 203 | if (cbyte != max || !tc) return adns_s_invaliddata; |
eb81d633 | 204 | |
205 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); | |
206 | if (!table) R_NOMEM; | |
207 | ||
208 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { | |
b365d68a | 209 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
9ec44266 | 210 | if (st) return st; |
eb81d633 | 211 | } |
212 | assert(cbyte == max); | |
213 | ||
214 | te->i= -1; | |
215 | te->str= 0; | |
216 | ||
217 | *rrp= table; | |
218 | return adns_s_ok; | |
828d89bd | 219 | } |
220 | ||
b365d68a | 221 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
222 | const adns_rr_intstr *const *rrp= datap; | |
223 | const adns_rr_intstr *current; | |
224 | adns_status st; | |
225 | int spc; | |
226 | ||
227 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { | |
228 | if (spc) CSP_ADDSTR(" "); | |
229 | st= csp_qstring(vb,current->str,current->i); if (st) return st; | |
230 | } | |
231 | return adns_s_ok; | |
232 | } | |
233 | ||
234 | /* | |
235 | * _hinfo (cs) | |
236 | */ | |
237 | ||
238 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { | |
239 | const adns_rr_intstrpair *rrp= datap; | |
240 | adns_status st; | |
241 | ||
242 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; | |
243 | CSP_ADDSTR(" "); | |
244 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; | |
245 | return adns_s_ok; | |
246 | } | |
247 | ||
eb81d633 | 248 | /* |
844e3556 | 249 | * _inaddr (pa,di,cs +search_sortlist, dip_genaddr, csp_genaddr) |
eb81d633 | 250 | */ |
251 | ||
609133ee | 252 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, |
253 | int max, void *datap) { | |
e062dcae | 254 | struct in_addr *storeto= datap; |
e7a9ca47 | 255 | |
256 | if (max-cbyte != 4) return adns_s_invaliddata; | |
1dfe95d8 | 257 | memcpy(storeto, pai->dgram + cbyte, 4); |
e7a9ca47 | 258 | return adns_s_ok; |
259 | } | |
260 | ||
c0ec02b5 | 261 | static int search_sortlist(adns_state ads, int af, const void *ad) { |
09957b1c | 262 | const struct sortlist *slp; |
263 | int i; | |
264 | ||
265 | for (i=0, slp=ads->sortlist; | |
609133ee | 266 | i<ads->nsortlist && |
ddf8d57f | 267 | !adns__addr_match_p(af,ad, slp->af,&slp->base,&slp->mask); |
09957b1c | 268 | i++, slp++); |
269 | return i; | |
eb81d633 | 270 | } |
271 | ||
c0ec02b5 | 272 | static int dip_genaddr(adns_state ads, int af, const void *a, const void *b) { |
09957b1c | 273 | int ai, bi; |
274 | ||
275 | if (!ads->nsortlist) return 0; | |
276 | ||
c0ec02b5 MW |
277 | ai= search_sortlist(ads,af,a); |
278 | bi= search_sortlist(ads,af,b); | |
09957b1c | 279 | return bi<ai; |
280 | } | |
281 | ||
609133ee | 282 | static int di_inaddr(adns_state ads, |
283 | const void *datap_a, const void *datap_b) { | |
c0ec02b5 | 284 | return dip_genaddr(ads,AF_INET,datap_a,datap_b); |
e062dcae | 285 | } |
286 | ||
844e3556 MW |
287 | static adns_status csp_genaddr(vbuf *vb, int af, const void *p) { |
288 | char buf[ADNS_ADDR2TEXT_BUFLEN]; | |
289 | int len= sizeof(buf); | |
290 | adns_rr_addr a; | |
291 | int err; | |
292 | ||
293 | memset(&a, 0, sizeof(a)); | |
294 | a.addr.sa.sa_family= af; | |
295 | adns__sockaddr_inject(p, 0, &a.addr.sa); | |
296 | err= adns_addr2text(&a.addr.sa,0, buf,&len, 0); assert(!err); | |
297 | CSP_ADDSTR(buf); | |
1dfe95d8 | 298 | return adns_s_ok; |
86e7b8d9 | 299 | } |
e7a9ca47 | 300 | |
844e3556 MW |
301 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { |
302 | return csp_genaddr(vb, AF_INET,datap); | |
303 | } | |
304 | ||
eb81d633 | 305 | /* |
0d244930 MW |
306 | * _in6addr (pa,di,cs) |
307 | */ | |
308 | ||
309 | static adns_status pa_in6addr(const parseinfo *pai, int cbyte, | |
310 | int max, void *datap) { | |
311 | struct in6_addr *storeto= datap; | |
312 | ||
313 | if (max-cbyte != 16) return adns_s_invaliddata; | |
314 | memcpy(storeto->s6_addr, pai->dgram + cbyte, 16); | |
315 | return adns_s_ok; | |
316 | } | |
317 | ||
318 | static int di_in6addr(adns_state ads, | |
319 | const void *datap_a, const void *datap_b) { | |
320 | return dip_genaddr(ads,AF_INET6,datap_a,datap_b); | |
321 | } | |
322 | ||
323 | static adns_status cs_in6addr(vbuf *vb, const void *datap) { | |
324 | return csp_genaddr(vb,AF_INET6,datap); | |
325 | } | |
326 | ||
327 | /* | |
c0ec02b5 | 328 | * _addr (pa,di,div,csp,cs,gsz +search_sortlist_sa, dip_sockaddr) |
eb81d633 | 329 | */ |
330 | ||
609133ee | 331 | static adns_status pa_addr(const parseinfo *pai, int cbyte, |
332 | int max, void *datap) { | |
551ff40f | 333 | adns_rr_addr *storeto= datap; |
1dfe95d8 | 334 | const byte *dgram= pai->dgram; |
c7836bc9 | 335 | |
828d89bd | 336 | if (max-cbyte != 4) return adns_s_invaliddata; |
337 | storeto->len= sizeof(storeto->addr.inet); | |
338 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); | |
339 | storeto->addr.inet.sin_family= AF_INET; | |
828d89bd | 340 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
341 | return adns_s_ok; | |
342 | } | |
343 | ||
c0ec02b5 | 344 | static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa) { |
ddf8d57f MW |
345 | union gen_addr a; |
346 | adns__sockaddr_extract(sa, &a, 0); | |
347 | return search_sortlist(ads, sa->sa_family, &a); | |
c0ec02b5 | 348 | } |
ddf8d57f | 349 | |
c0ec02b5 MW |
350 | static int dip_sockaddr(adns_state ads, |
351 | const struct sockaddr *sa, | |
352 | const struct sockaddr *sb) { | |
353 | if (!ads->sortlist) return 0; | |
354 | return search_sortlist_sa(ads, sa) > search_sortlist_sa(ads, sb); | |
355 | } | |
356 | ||
09957b1c | 357 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
551ff40f | 358 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
c0ec02b5 | 359 | return dip_sockaddr(ads, &ap->addr.sa, &bp->addr.sa); |
828d89bd | 360 | } |
361 | ||
09957b1c | 362 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
363 | const adns_state ads= context; | |
364 | ||
365 | return di_addr(ads, datap_a, datap_b); | |
366 | } | |
367 | ||
551ff40f | 368 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
844e3556 MW |
369 | char buf[ADNS_ADDR2TEXT_BUFLEN]; |
370 | int len= sizeof(buf); | |
371 | int err; | |
828d89bd | 372 | |
373 | switch (rrp->addr.inet.sin_family) { | |
374 | case AF_INET: | |
b365d68a | 375 | CSP_ADDSTR("INET "); |
844e3556 MW |
376 | goto a2t; |
377 | case AF_INET6: | |
378 | CSP_ADDSTR("INET6 "); | |
379 | goto a2t; | |
380 | a2t: | |
381 | err= adns_addr2text(&rrp->addr.sa,0, buf,&len, 0); assert(!err); | |
382 | CSP_ADDSTR(buf); | |
828d89bd | 383 | break; |
384 | default: | |
385 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); | |
1dfe95d8 | 386 | CSP_ADDSTR(buf); |
828d89bd | 387 | break; |
388 | } | |
389 | return adns_s_ok; | |
390 | } | |
391 | ||
1dfe95d8 | 392 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
551ff40f | 393 | const adns_rr_addr *rrp= datap; |
1dfe95d8 | 394 | |
395 | return csp_addr(vb,rrp); | |
396 | } | |
397 | ||
ef7070af MW |
398 | static int gsz_addr(const typeinfo *typei, adns_rrtype type) { |
399 | return type & adns__qtf_bigaddr ? | |
400 | sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only); | |
401 | } | |
402 | ||
eb81d633 | 403 | /* |
b365d68a | 404 | * _domain (pap,csp,cs) |
405 | * _dom_raw (pa) | |
eb81d633 | 406 | */ |
407 | ||
1dfe95d8 | 408 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
409 | char **domain_r, parsedomain_flags flags) { | |
e062dcae | 410 | adns_status st; |
411 | char *dm; | |
412 | ||
1dfe95d8 | 413 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
414 | pai->dgram,pai->dglen, cbyte_io, max); | |
e062dcae | 415 | if (st) return st; |
1dfe95d8 | 416 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
e062dcae | 417 | |
1dfe95d8 | 418 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
419 | if (!dm) R_NOMEM; | |
e062dcae | 420 | |
1dfe95d8 | 421 | dm[pai->qu->vb.used]= 0; |
422 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); | |
e062dcae | 423 | |
424 | *domain_r= dm; | |
425 | return adns_s_ok; | |
426 | } | |
427 | ||
b365d68a | 428 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
429 | CSP_ADDSTR(domain); | |
430 | if (!*domain) CSP_ADDSTR("."); | |
431 | return adns_s_ok; | |
432 | } | |
433 | ||
434 | static adns_status cs_domain(vbuf *vb, const void *datap) { | |
435 | const char *const *domainp= datap; | |
436 | return csp_domain(vb,*domainp); | |
437 | } | |
438 | ||
609133ee | 439 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, |
440 | int max, void *datap) { | |
b365d68a | 441 | char **rrp= datap; |
442 | adns_status st; | |
443 | ||
444 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); | |
445 | if (st) return st; | |
446 | ||
447 | if (cbyte != max) return adns_s_invaliddata; | |
448 | return adns_s_ok; | |
449 | } | |
450 | ||
eb81d633 | 451 | /* |
452 | * _host_raw (pa) | |
453 | */ | |
454 | ||
609133ee | 455 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, |
456 | int max, void *datap) { | |
e062dcae | 457 | char **rrp= datap; |
ffbda80c | 458 | adns_status st; |
86e7b8d9 | 459 | |
1dfe95d8 | 460 | st= pap_domain(pai, &cbyte, max, rrp, |
461 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
e062dcae | 462 | if (st) return st; |
463 | ||
464 | if (cbyte != max) return adns_s_invaliddata; | |
465 | return adns_s_ok; | |
466 | } | |
ffbda80c | 467 | |
eb81d633 | 468 | /* |
382b81f7 | 469 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs, icb_hostaddr) |
eb81d633 | 470 | */ |
c7836bc9 | 471 | |
1dfe95d8 | 472 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
ef7070af | 473 | size_t addrsz, |
1dfe95d8 | 474 | int *cbyte_io, int count, int dmstart) { |
475 | int rri, naddrs; | |
c7836bc9 | 476 | int type, class, rdlen, rdstart, ownermatched; |
73dba56e | 477 | unsigned long ttl; |
1dfe95d8 | 478 | adns_status st; |
c7836bc9 | 479 | |
1dfe95d8 | 480 | for (rri=0, naddrs=-1; rri<count; rri++) { |
609133ee | 481 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, |
482 | pai->dglen, cbyte_io, | |
73dba56e | 483 | &type, &class, &ttl, &rdlen, &rdstart, |
1dfe95d8 | 484 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
c7836bc9 | 485 | if (st) return st; |
1dfe95d8 | 486 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
487 | if (naddrs>0) break; else continue; | |
488 | } | |
489 | if (naddrs == -1) { | |
490 | naddrs= 0; | |
c7836bc9 | 491 | } |
ef7070af | 492 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) |
609133ee | 493 | R_NOMEM; |
73dba56e | 494 | adns__update_expires(pai->qu,ttl,pai->now); |
ef7070af | 495 | st= pa_addr(pai, rdstart,rdstart+rdlen, pai->qu->vb.buf + naddrs*addrsz); |
c7836bc9 | 496 | if (st) return st; |
1dfe95d8 | 497 | naddrs++; |
c7836bc9 | 498 | } |
1dfe95d8 | 499 | if (naddrs >= 0) { |
ef7070af | 500 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*addrsz); |
1dfe95d8 | 501 | if (!ha->addrs) R_NOMEM; |
ef7070af | 502 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*addrsz); |
1dfe95d8 | 503 | ha->naddrs= naddrs; |
c7836bc9 | 504 | ha->astatus= adns_s_ok; |
1dfe95d8 | 505 | |
ef7070af | 506 | adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf, |
09957b1c | 507 | div_addr, pai->ads); |
c7836bc9 | 508 | } |
509 | return adns_s_ok; | |
510 | } | |
511 | ||
551ff40f | 512 | static void icb_hostaddr(adns_query parent, adns_query child) { |
551ff40f | 513 | adns_answer *cans= child->answer; |
0ea82d76 | 514 | adns_rr_hostaddr *rrp= child->ctx.pinfo.hostaddr; |
4218fb9a | 515 | adns_state ads= parent->ads; |
b365d68a | 516 | adns_status st; |
ef7070af | 517 | size_t addrsz= gsz_addr(0, parent->answer->type); |
551ff40f | 518 | |
b365d68a | 519 | st= cans->status; |
520 | rrp->astatus= st; | |
521 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs; | |
551ff40f | 522 | rrp->addrs= cans->rrs.addr; |
ef7070af | 523 | adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*addrsz); |
a6536d8b | 524 | |
4218fb9a | 525 | if (parent->children.head) { |
526 | LIST_LINK_TAIL(ads->childw,parent); | |
527 | } else { | |
528 | adns__query_done(parent); | |
529 | } | |
551ff40f | 530 | } |
531 | ||
1dfe95d8 | 532 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
533 | int max, adns_rr_hostaddr *rrp) { | |
c7836bc9 | 534 | adns_status st; |
535 | int dmstart, cbyte; | |
7da21070 | 536 | qcontext ctx; |
537 | int id; | |
538 | adns_query nqu; | |
4b707d8b | 539 | adns_queryflags nflags; |
ef7070af | 540 | size_t addrsz= gsz_addr(0, pai->qu->answer->type); |
c7836bc9 | 541 | |
542 | dmstart= cbyte= *cbyte_io; | |
1dfe95d8 | 543 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
544 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
c7836bc9 | 545 | if (st) return st; |
546 | *cbyte_io= cbyte; | |
547 | ||
548 | rrp->astatus= adns_s_ok; | |
549 | rrp->naddrs= -1; | |
550 | rrp->addrs= 0; | |
551 | ||
1dfe95d8 | 552 | cbyte= pai->nsstart; |
c7836bc9 | 553 | |
ef7070af | 554 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->nscount, dmstart); |
c7836bc9 | 555 | if (st) return st; |
556 | if (rrp->naddrs != -1) return adns_s_ok; | |
557 | ||
ef7070af | 558 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->arcount, dmstart); |
c7836bc9 | 559 | if (st) return st; |
560 | if (rrp->naddrs != -1) return adns_s_ok; | |
1dfe95d8 | 561 | |
7da21070 | 562 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
563 | pai->dgram, pai->dglen, dmstart, | |
564 | adns_r_addr, adns_qf_quoteok_query); | |
565 | if (st) return st; | |
551ff40f | 566 | |
a6536d8b | 567 | ctx.ext= 0; |
568 | ctx.callback= icb_hostaddr; | |
0ea82d76 MW |
569 | ctx.pinfo.hostaddr= rrp; |
570 | memset(&ctx.tinfo, 0, sizeof(ctx.tinfo)); | |
4b707d8b | 571 | |
572 | nflags= adns_qf_quoteok_query; | |
573 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; | |
574 | ||
7da21070 | 575 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
c37d270a MW |
576 | ((adns_r_addr & adns_rrt_reprmask) | |
577 | (pai->qu->answer->type & ~adns_rrt_reprmask)), | |
660d7d3b | 578 | &pai->qu->vb, id, nflags, pai->now, &ctx); |
7da21070 | 579 | if (st) return st; |
580 | ||
581 | nqu->parent= pai->qu; | |
582 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
1dfe95d8 | 583 | |
584 | return adns_s_ok; | |
c7836bc9 | 585 | } |
586 | ||
609133ee | 587 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, |
588 | int max, void *datap) { | |
1dfe95d8 | 589 | adns_rr_hostaddr *rrp= datap; |
c7836bc9 | 590 | adns_status st; |
c7836bc9 | 591 | |
1dfe95d8 | 592 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
c7836bc9 | 593 | if (st) return st; |
594 | if (cbyte != max) return adns_s_invaliddata; | |
595 | ||
1dfe95d8 | 596 | return adns_s_ok; |
597 | } | |
c7836bc9 | 598 | |
609133ee | 599 | static int dip_hostaddr(adns_state ads, |
600 | const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { | |
1dfe95d8 | 601 | if (ap->astatus != bp->astatus) return ap->astatus; |
602 | if (ap->astatus) return 0; | |
c7836bc9 | 603 | |
c0ec02b5 | 604 | return dip_sockaddr(ads, &ap->addrs[0].addr.sa, &bp->addrs[0].addr.sa); |
1dfe95d8 | 605 | } |
606 | ||
609133ee | 607 | static int di_hostaddr(adns_state ads, |
608 | const void *datap_a, const void *datap_b) { | |
1dfe95d8 | 609 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
610 | ||
09957b1c | 611 | return dip_hostaddr(ads, ap,bp); |
c7836bc9 | 612 | } |
613 | ||
eb81d633 | 614 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
615 | void *tablev; | |
ef7070af | 616 | size_t addrsz= gsz_addr(0, qu->answer->type); |
e062dcae | 617 | |
eb81d633 | 618 | adns__makefinal_str(qu,&rrp->host); |
619 | tablev= rrp->addrs; | |
ef7070af | 620 | adns__makefinal_block(qu, &tablev, rrp->naddrs*addrsz); |
eb81d633 | 621 | rrp->addrs= tablev; |
e062dcae | 622 | } |
623 | ||
eb81d633 | 624 | static void mf_hostaddr(adns_query qu, void *datap) { |
625 | adns_rr_hostaddr *rrp= datap; | |
e062dcae | 626 | |
eb81d633 | 627 | mfp_hostaddr(qu,rrp); |
e062dcae | 628 | } |
629 | ||
1dfe95d8 | 630 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
a6f1dc92 | 631 | const char *errstr; |
1dfe95d8 | 632 | adns_status st; |
ac77ffc1 | 633 | char buf[20]; |
1dfe95d8 | 634 | int i; |
635 | ||
a6f1dc92 | 636 | st= csp_domain(vb,rrp->host); if (st) return st; |
1dfe95d8 | 637 | |
b365d68a | 638 | CSP_ADDSTR(" "); |
ac77ffc1 | 639 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
640 | ||
641 | sprintf(buf," %d ",rrp->astatus); | |
642 | CSP_ADDSTR(buf); | |
a6f1dc92 | 643 | |
ac77ffc1 | 644 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
a6f1dc92 | 645 | CSP_ADDSTR(" "); |
ac77ffc1 | 646 | |
a6f1dc92 | 647 | errstr= adns_strerror(rrp->astatus); |
648 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; | |
b365d68a | 649 | |
650 | if (rrp->naddrs >= 0) { | |
651 | CSP_ADDSTR(" ("); | |
652 | for (i=0; i<rrp->naddrs; i++) { | |
653 | CSP_ADDSTR(" "); | |
1dfe95d8 | 654 | st= csp_addr(vb,&rrp->addrs[i]); |
655 | } | |
b365d68a | 656 | CSP_ADDSTR(" )"); |
657 | } else { | |
658 | CSP_ADDSTR(" ?"); | |
1dfe95d8 | 659 | } |
660 | return adns_s_ok; | |
661 | } | |
662 | ||
663 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { | |
664 | const adns_rr_hostaddr *rrp= datap; | |
665 | ||
666 | return csp_hostaddr(vb,rrp); | |
667 | } | |
668 | ||
eb81d633 | 669 | /* |
670 | * _mx_raw (pa,di) | |
671 | */ | |
1dfe95d8 | 672 | |
609133ee | 673 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, |
674 | int max, void *datap) { | |
eb81d633 | 675 | const byte *dgram= pai->dgram; |
676 | adns_rr_intstr *rrp= datap; | |
677 | adns_status st; | |
678 | int pref; | |
1dfe95d8 | 679 | |
eb81d633 | 680 | if (cbyte+2 > max) return adns_s_invaliddata; |
681 | GET_W(cbyte,pref); | |
682 | rrp->i= pref; | |
683 | st= pap_domain(pai, &cbyte, max, &rrp->str, | |
684 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
685 | if (st) return st; | |
1dfe95d8 | 686 | |
eb81d633 | 687 | if (cbyte != max) return adns_s_invaliddata; |
688 | return adns_s_ok; | |
689 | } | |
1dfe95d8 | 690 | |
09957b1c | 691 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 692 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
693 | ||
694 | if (ap->i < bp->i) return 0; | |
695 | if (ap->i > bp->i) return 1; | |
696 | return 0; | |
1dfe95d8 | 697 | } |
698 | ||
eb81d633 | 699 | /* |
700 | * _mx (pa,di) | |
701 | */ | |
1dfe95d8 | 702 | |
609133ee | 703 | static adns_status pa_mx(const parseinfo *pai, int cbyte, |
704 | int max, void *datap) { | |
eb81d633 | 705 | const byte *dgram= pai->dgram; |
706 | adns_rr_inthostaddr *rrp= datap; | |
707 | adns_status st; | |
708 | int pref; | |
709 | ||
710 | if (cbyte+2 > max) return adns_s_invaliddata; | |
711 | GET_W(cbyte,pref); | |
712 | rrp->i= pref; | |
713 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); | |
714 | if (st) return st; | |
715 | ||
716 | if (cbyte != max) return adns_s_invaliddata; | |
717 | return adns_s_ok; | |
718 | } | |
719 | ||
09957b1c | 720 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 721 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
722 | ||
723 | if (ap->i < bp->i) return 0; | |
724 | if (ap->i > bp->i) return 1; | |
09957b1c | 725 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
1dfe95d8 | 726 | } |
727 | ||
eb81d633 | 728 | /* |
729 | * _inthostaddr (mf,cs) | |
730 | */ | |
731 | ||
1dfe95d8 | 732 | static void mf_inthostaddr(adns_query qu, void *datap) { |
733 | adns_rr_inthostaddr *rrp= datap; | |
734 | ||
735 | mfp_hostaddr(qu,&rrp->ha); | |
736 | } | |
737 | ||
eb81d633 | 738 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
739 | const adns_rr_inthostaddr *rrp= datap; | |
740 | char buf[10]; | |
e062dcae | 741 | |
eb81d633 | 742 | sprintf(buf,"%u ",rrp->i); |
743 | CSP_ADDSTR(buf); | |
744 | ||
745 | return csp_hostaddr(vb,&rrp->ha); | |
ffbda80c | 746 | } |
747 | ||
eb81d633 | 748 | /* |
b365d68a | 749 | * _inthost (cs) |
750 | */ | |
751 | ||
752 | static adns_status cs_inthost(vbuf *vb, const void *datap) { | |
753 | const adns_rr_intstr *rrp= datap; | |
754 | char buf[10]; | |
755 | ||
756 | sprintf(buf,"%u ",rrp->i); | |
757 | CSP_ADDSTR(buf); | |
758 | return csp_domain(vb,rrp->str); | |
759 | } | |
760 | ||
761 | /* | |
40206a7e | 762 | * _ptr (ckl,pa +icb_ptr) |
a6536d8b | 763 | */ |
764 | ||
40206a7e MW |
765 | static adns_status ckl_ptr(adns_state ads, adns_queryflags flags, |
766 | union checklabel_state *cls, qcontext *ctx, | |
767 | int labnum, const char *label, int lablen) { | |
60b40c59 MW |
768 | if (lablen) { |
769 | if (adns__revparse_label(&cls->ptr, labnum, label,lablen)) | |
770 | return adns_s_querydomainwrong; | |
40206a7e | 771 | } else { |
60b40c59 MW |
772 | if (adns__revparse_done(&cls->ptr, labnum, |
773 | &ctx->tinfo.ptr.rev_rrtype, | |
774 | &ctx->tinfo.ptr.addr)) | |
775 | return adns_s_querydomainwrong; | |
40206a7e MW |
776 | } |
777 | return adns_s_ok; | |
778 | } | |
779 | ||
a6536d8b | 780 | static void icb_ptr(adns_query parent, adns_query child) { |
781 | adns_answer *cans= child->answer; | |
c0ec02b5 | 782 | const struct af_addr *queried; |
8de0fa76 | 783 | const unsigned char *found; |
4218fb9a | 784 | adns_state ads= parent->ads; |
a6536d8b | 785 | int i; |
786 | ||
787 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { | |
788 | adns__query_fail(parent,adns_s_inconsistent); | |
789 | return; | |
790 | } else if (cans->status) { | |
791 | adns__query_fail(parent,cans->status); | |
792 | return; | |
793 | } | |
794 | ||
8de0fa76 MW |
795 | queried= &parent->ctx.tinfo.ptr.addr; |
796 | for (i=0, found=cans->rrs.bytes; i<cans->nrrs; i++, found+=cans->rrsz) { | |
60b40c59 MW |
797 | if (adns__genaddr_equal_p(queried->af,&queried->addr, |
798 | parent->ctx.tinfo.ptr.addr.af,found)) { | |
4218fb9a | 799 | if (!parent->children.head) { |
800 | adns__query_done(parent); | |
801 | return; | |
802 | } else { | |
803 | LIST_LINK_TAIL(ads->childw,parent); | |
804 | return; | |
805 | } | |
a6536d8b | 806 | } |
807 | } | |
808 | ||
809 | adns__query_fail(parent,adns_s_inconsistent); | |
810 | } | |
811 | ||
609133ee | 812 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, |
813 | int max, void *datap) { | |
a6536d8b | 814 | char **rrp= datap; |
815 | adns_status st; | |
60b40c59 | 816 | adns_rrtype rrtype= pai->qu->ctx.tinfo.ptr.rev_rrtype; |
40206a7e | 817 | int cbyte, id; |
a6536d8b | 818 | adns_query nqu; |
819 | qcontext ctx; | |
820 | ||
821 | cbyte= dmstart; | |
822 | st= pap_domain(pai, &cbyte, max, rrp, | |
823 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
824 | if (st) return st; | |
825 | if (cbyte != max) return adns_s_invaliddata; | |
826 | ||
a6536d8b | 827 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
828 | pai->dgram, pai->dglen, dmstart, | |
60b40c59 | 829 | rrtype, adns_qf_quoteok_query); |
a6536d8b | 830 | if (st) return st; |
831 | ||
832 | ctx.ext= 0; | |
833 | ctx.callback= icb_ptr; | |
0ea82d76 MW |
834 | memset(&ctx.pinfo,0,sizeof(ctx.pinfo)); |
835 | memset(&ctx.tinfo,0,sizeof(ctx.tinfo)); | |
60b40c59 MW |
836 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(rrtype), |
837 | rrtype, &pai->qu->vb, id, | |
838 | adns_qf_quoteok_query, pai->now, &ctx); | |
a6536d8b | 839 | if (st) return st; |
840 | ||
841 | nqu->parent= pai->qu; | |
842 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
a6536d8b | 843 | return adns_s_ok; |
844 | } | |
845 | ||
846 | /* | |
b365d68a | 847 | * _strpair (mf) |
9ec44266 | 848 | */ |
849 | ||
850 | static void mf_strpair(adns_query qu, void *datap) { | |
851 | adns_rr_strpair *rrp= datap; | |
852 | ||
853 | adns__makefinal_str(qu,&rrp->array[0]); | |
854 | adns__makefinal_str(qu,&rrp->array[1]); | |
855 | } | |
856 | ||
9ec44266 | 857 | /* |
b365d68a | 858 | * _intstrpair (mf) |
9ec44266 | 859 | */ |
860 | ||
861 | static void mf_intstrpair(adns_query qu, void *datap) { | |
862 | adns_rr_intstrpair *rrp= datap; | |
863 | ||
864 | adns__makefinal_str(qu,&rrp->array[0].str); | |
865 | adns__makefinal_str(qu,&rrp->array[1].str); | |
866 | } | |
867 | ||
9ec44266 | 868 | /* |
869 | * _hinfo (pa) | |
870 | */ | |
871 | ||
609133ee | 872 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, |
873 | int max, void *datap) { | |
9ec44266 | 874 | adns_rr_intstrpair *rrp= datap; |
875 | adns_status st; | |
876 | int i; | |
877 | ||
878 | for (i=0; i<2; i++) { | |
b365d68a | 879 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
9ec44266 | 880 | if (st) return st; |
881 | } | |
882 | ||
883 | if (cbyte != max) return adns_s_invaliddata; | |
884 | ||
885 | return adns_s_ok; | |
886 | } | |
887 | ||
888 | /* | |
382b81f7 | 889 | * _mailbox (pap,cs +pap_mailbox822) |
9ec44266 | 890 | */ |
891 | ||
609133ee | 892 | static adns_status pap_mailbox822(const parseinfo *pai, |
893 | int *cbyte_io, int max, char **mb_r) { | |
eaa44731 | 894 | int lablen, labstart, i, needquote, c, r, neednorm; |
895 | const unsigned char *p; | |
896 | char *str; | |
897 | findlabel_state fls; | |
898 | adns_status st; | |
899 | vbuf *vb; | |
900 | ||
901 | vb= &pai->qu->vb; | |
902 | vb->used= 0; | |
903 | adns__findlabel_start(&fls, pai->ads, | |
904 | -1, pai->qu, | |
905 | pai->dgram, pai->dglen, max, | |
906 | *cbyte_io, cbyte_io); | |
907 | st= adns__findlabel_next(&fls,&lablen,&labstart); | |
908 | if (!lablen) { | |
b365d68a | 909 | adns__vbuf_appendstr(vb,"."); |
eaa44731 | 910 | goto x_ok; |
911 | } | |
912 | ||
913 | neednorm= 1; | |
914 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { | |
915 | c= *p++; | |
916 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; | |
917 | if (c == '.' && !neednorm) neednorm= 1; | |
7672a872 | 918 | else if (c==' ' || c>=127 || ctype_822special(c)) needquote++; |
eaa44731 | 919 | else neednorm= 0; |
920 | } | |
921 | ||
922 | if (needquote || neednorm) { | |
923 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; | |
924 | adns__vbuf_appendq(vb,"\"",1); | |
925 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { | |
926 | c= *p; | |
b365d68a | 927 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
eaa44731 | 928 | adns__vbuf_appendq(vb,p,1); |
929 | } | |
930 | adns__vbuf_appendq(vb,"\"",1); | |
931 | } else { | |
932 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; | |
933 | } | |
934 | ||
935 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; | |
936 | ||
937 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); | |
938 | if (st) return st; | |
939 | ||
940 | x_ok: | |
941 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; | |
942 | memcpy(str,vb->buf,vb->used); | |
943 | str[vb->used]= 0; | |
944 | *mb_r= str; | |
945 | return adns_s_ok; | |
9ec44266 | 946 | } |
947 | ||
9da4a044 | 948 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
949 | char **mb_r) { | |
2c6eb096 | 950 | if (pai->qu->typei->typekey & adns__qtf_mail822) { |
9da4a044 | 951 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
952 | } else { | |
b365d68a | 953 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
9da4a044 | 954 | } |
955 | } | |
956 | ||
b365d68a | 957 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
958 | return csp_domain(vb,mailbox); | |
959 | } | |
960 | ||
9ec44266 | 961 | /* |
b365d68a | 962 | * _rp (pa,cs) |
9ec44266 | 963 | */ |
964 | ||
609133ee | 965 | static adns_status pa_rp(const parseinfo *pai, int cbyte, |
966 | int max, void *datap) { | |
9ec44266 | 967 | adns_rr_strpair *rrp= datap; |
968 | adns_status st; | |
969 | ||
970 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); | |
971 | if (st) return st; | |
972 | ||
973 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); | |
974 | if (st) return st; | |
975 | ||
976 | if (cbyte != max) return adns_s_invaliddata; | |
977 | return adns_s_ok; | |
978 | } | |
979 | ||
b365d68a | 980 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
981 | const adns_rr_strpair *rrp= datap; | |
982 | adns_status st; | |
983 | ||
984 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; | |
985 | CSP_ADDSTR(" "); | |
986 | st= csp_domain(vb,rrp->array[1]); if (st) return st; | |
987 | ||
988 | return adns_s_ok; | |
989 | } | |
990 | ||
9ec44266 | 991 | /* |
992 | * _soa (pa,mf,cs) | |
993 | */ | |
994 | ||
609133ee | 995 | static adns_status pa_soa(const parseinfo *pai, int cbyte, |
996 | int max, void *datap) { | |
9ec44266 | 997 | adns_rr_soa *rrp= datap; |
998 | const byte *dgram= pai->dgram; | |
999 | adns_status st; | |
1000 | int msw, lsw, i; | |
1001 | ||
1002 | st= pap_domain(pai, &cbyte, max, &rrp->mname, | |
1003 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1004 | if (st) return st; | |
1005 | ||
1006 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); | |
1007 | if (st) return st; | |
1008 | ||
1009 | if (cbyte+20 != max) return adns_s_invaliddata; | |
1010 | ||
1011 | for (i=0; i<5; i++) { | |
1012 | GET_W(cbyte,msw); | |
1013 | GET_W(cbyte,lsw); | |
1014 | (&rrp->serial)[i]= (msw<<16) | lsw; | |
1015 | } | |
1016 | ||
1017 | return adns_s_ok; | |
1018 | } | |
1019 | ||
1020 | static void mf_soa(adns_query qu, void *datap) { | |
1021 | adns_rr_soa *rrp= datap; | |
1022 | ||
1023 | adns__makefinal_str(qu,&rrp->mname); | |
1024 | adns__makefinal_str(qu,&rrp->rname); | |
1025 | } | |
1026 | ||
1027 | static adns_status cs_soa(vbuf *vb, const void *datap) { | |
1028 | const adns_rr_soa *rrp= datap; | |
1029 | char buf[20]; | |
1030 | int i; | |
1031 | adns_status st; | |
1032 | ||
b365d68a | 1033 | st= csp_domain(vb,rrp->mname); if (st) return st; |
9ec44266 | 1034 | CSP_ADDSTR(" "); |
b365d68a | 1035 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
9ec44266 | 1036 | |
1037 | for (i=0; i<5; i++) { | |
1038 | sprintf(buf," %lu",(&rrp->serial)[i]); | |
1039 | CSP_ADDSTR(buf); | |
1040 | } | |
1041 | ||
1042 | return adns_s_ok; | |
1043 | } | |
1044 | ||
1045 | /* | |
e8e5aeac | 1046 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
d19b03d0 | 1047 | */ |
1048 | ||
e8e5aeac MW |
1049 | static adns_status ckl_srv(adns_state ads, adns_queryflags flags, |
1050 | union checklabel_state *cls, qcontext *ctx, | |
1051 | int labnum, const char *label, int lablen) { | |
1052 | if (labnum < 2 && !(flags & adns_qf_quoteok_query)) { | |
1053 | if (!lablen || label[0] != '_') return adns_s_querydomaininvalid; | |
1054 | return adns_s_ok; | |
d19b03d0 | 1055 | } |
e8e5aeac | 1056 | return adns__ckl_hostname(ads, flags, cls, ctx, labnum, label, lablen); |
d19b03d0 | 1057 | } |
1058 | ||
05fc6b3a | 1059 | static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max, |
0e45654b | 1060 | adns_rr_srvha *rrp |
1061 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1062 | const byte *dgram= pai->dgram; |
05fc6b3a | 1063 | int ti, cbyte; |
1064 | ||
1065 | cbyte= *cbyte_io; | |
1066 | if ((*cbyte_io += 6) > max) return adns_s_invaliddata; | |
401c256a | 1067 | |
1068 | rrp->priority= GET_W(cbyte, ti); | |
1069 | rrp->weight= GET_W(cbyte, ti); | |
1070 | rrp->port= GET_W(cbyte, ti); | |
1071 | return adns_s_ok; | |
1072 | } | |
1073 | ||
1074 | static adns_status pa_srvraw(const parseinfo *pai, int cbyte, | |
1075 | int max, void *datap) { | |
1076 | adns_rr_srvraw *rrp= datap; | |
1077 | adns_status st; | |
1078 | ||
05fc6b3a | 1079 | st= pap_srv_begin(pai,&cbyte,max,datap); |
401c256a | 1080 | if (st) return st; |
1081 | ||
1082 | st= pap_domain(pai, &cbyte, max, &rrp->host, | |
1083 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1084 | if (st) return st; | |
1085 | ||
1086 | if (cbyte != max) return adns_s_invaliddata; | |
1087 | return adns_s_ok; | |
1088 | } | |
1089 | ||
1090 | static adns_status pa_srvha(const parseinfo *pai, int cbyte, | |
1091 | int max, void *datap) { | |
1092 | adns_rr_srvha *rrp= datap; | |
1093 | adns_status st; | |
1094 | ||
05fc6b3a | 1095 | st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st; |
401c256a | 1096 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st; |
1097 | if (cbyte != max) return adns_s_invaliddata; | |
1098 | return adns_s_ok; | |
1099 | } | |
1100 | ||
1101 | static void mf_srvraw(adns_query qu, void *datap) { | |
1102 | adns_rr_srvraw *rrp= datap; | |
1103 | adns__makefinal_str(qu, &rrp->host); | |
1104 | } | |
1105 | ||
1106 | static void mf_srvha(adns_query qu, void *datap) { | |
1107 | adns_rr_srvha *rrp= datap; | |
1108 | mfp_hostaddr(qu,&rrp->ha); | |
1109 | } | |
1110 | ||
1111 | static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) { | |
1112 | const adns_rr_srvraw *ap= datap_a, *bp= datap_b; | |
1113 | /* might be const adns_rr_svhostaddr* */ | |
1114 | ||
1115 | if (ap->priority < bp->priority) return 0; | |
1116 | if (ap->priority > bp->priority) return 1; | |
1117 | return 0; | |
1118 | } | |
1119 | ||
0e45654b | 1120 | static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp |
1121 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1122 | char buf[30]; |
1123 | sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port); | |
1124 | CSP_ADDSTR(buf); | |
1125 | return adns_s_ok; | |
1126 | } | |
1127 | ||
1128 | static adns_status cs_srvraw(vbuf *vb, const void *datap) { | |
1129 | const adns_rr_srvraw *rrp= datap; | |
1130 | adns_status st; | |
1131 | ||
0e45654b | 1132 | st= csp_srv_begin(vb,(const void*)rrp); if (st) return st; |
401c256a | 1133 | return csp_domain(vb,rrp->host); |
1134 | } | |
1135 | ||
1136 | static adns_status cs_srvha(vbuf *vb, const void *datap) { | |
1137 | const adns_rr_srvha *rrp= datap; | |
1138 | adns_status st; | |
1139 | ||
0e45654b | 1140 | st= csp_srv_begin(vb,(const void*)datap); if (st) return st; |
401c256a | 1141 | return csp_hostaddr(vb,&rrp->ha); |
1142 | } | |
1143 | ||
b5c41613 | 1144 | static void postsort_srv(adns_state ads, void *array, int nrrs,int rrsz, |
d24e2a7e | 1145 | const struct typeinfo *typei) { |
0e45654b | 1146 | /* we treat everything in the array as if it were an adns_rr_srvha |
1147 | * even though the array might be of adns_rr_srvraw. That's OK | |
1148 | * because they have the same prefix, which is all we access. | |
b5c41613 | 1149 | * We use rrsz, too, rather than naive array indexing, of course. |
0e45654b | 1150 | */ |
1151 | char *workbegin, *workend, *search, *arrayend; | |
1152 | const adns_rr_srvha *rr; | |
1153 | union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp; | |
1154 | int cpriority, totalweight, runtotal; | |
1155 | long randval; | |
1156 | ||
b5c41613 MW |
1157 | assert(rrsz <= sizeof(rrtmp)); |
1158 | for (workbegin= array, arrayend= workbegin + rrsz * nrrs; | |
0e45654b | 1159 | workbegin < arrayend; |
1160 | workbegin= workend) { | |
1161 | cpriority= (rr=(void*)workbegin)->priority; | |
1162 | ||
1163 | for (workend= workbegin, totalweight= 0; | |
1164 | workend < arrayend && (rr=(void*)workend)->priority == cpriority; | |
b5c41613 | 1165 | workend += rrsz) { |
0e45654b | 1166 | totalweight += rr->weight; |
0e45654b | 1167 | } |
1168 | ||
1169 | /* Now workbegin..(workend-1) incl. are exactly all of the RRs of | |
1170 | * cpriority. From now on, workbegin points to the `remaining' | |
1171 | * records: we select one record at a time (RFC2782 `Usage rules' | |
1172 | * and `Format of the SRV RR' subsection `Weight') to place at | |
1173 | * workbegin (swapping with the one that was there, and then | |
1174 | * advance workbegin. */ | |
1175 | for (; | |
b5c41613 MW |
1176 | workbegin + rrsz < workend; /* don't bother if just one */ |
1177 | workbegin += rrsz) { | |
0e45654b | 1178 | |
1179 | randval= nrand48(ads->rand48xsubi); | |
1180 | randval %= (totalweight + 1); | |
0e45654b | 1181 | /* makes it into 0..totalweight inclusive; with 2^10 RRs, |
1182 | * totalweight must be <= 2^26 so probability nonuniformity is | |
1183 | * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie | |
1184 | * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5). | |
1185 | */ | |
1186 | ||
1187 | for (search=workbegin, runtotal=0; | |
1188 | (runtotal += (rr=(void*)search)->weight) < randval; | |
b5c41613 | 1189 | search += rrsz); |
0e45654b | 1190 | assert(search < arrayend); |
1191 | totalweight -= rr->weight; | |
1192 | if (search != workbegin) { | |
b5c41613 MW |
1193 | memcpy(&rrtmp, workbegin, rrsz); |
1194 | memcpy(workbegin, search, rrsz); | |
1195 | memcpy(search, &rrtmp, rrsz); | |
0e45654b | 1196 | } |
1197 | } | |
1198 | } | |
d24e2a7e | 1199 | /* tests: |
1200 | * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. | |
1201 | * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk. | |
1202 | * ./adnshost_s -t srv- _jabber._tcp.jabber.org | |
1203 | */ | |
1204 | } | |
1205 | ||
d19b03d0 | 1206 | /* |
2c6eb096 | 1207 | * _byteblock (mf) |
1208 | */ | |
1209 | ||
1210 | static void mf_byteblock(adns_query qu, void *datap) { | |
1211 | adns_rr_byteblock *rrp= datap; | |
1212 | void *bytes= rrp->data; | |
1213 | adns__makefinal_block(qu,&bytes,rrp->len); | |
1214 | rrp->data= bytes; | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * _opaque (pa,cs) | |
1219 | */ | |
1220 | ||
1221 | static adns_status pa_opaque(const parseinfo *pai, int cbyte, | |
1222 | int max, void *datap) { | |
1223 | adns_rr_byteblock *rrp= datap; | |
1224 | ||
1225 | rrp->len= max - cbyte; | |
1226 | rrp->data= adns__alloc_interim(pai->qu, rrp->len); | |
1227 | if (!rrp->data) R_NOMEM; | |
1228 | memcpy(rrp->data, pai->dgram + cbyte, rrp->len); | |
1229 | return adns_s_ok; | |
1230 | } | |
1231 | ||
1232 | static adns_status cs_opaque(vbuf *vb, const void *datap) { | |
1233 | const adns_rr_byteblock *rrp= datap; | |
1234 | char buf[10]; | |
1235 | int l; | |
1236 | unsigned char *p; | |
1237 | ||
1238 | sprintf(buf,"\\# %d",rrp->len); | |
1239 | CSP_ADDSTR(buf); | |
1240 | ||
1241 | for (l= rrp->len, p= rrp->data; | |
1242 | l>=4; | |
1243 | l -= 4, p += 4) { | |
1244 | sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]); | |
1245 | CSP_ADDSTR(buf); | |
1246 | } | |
1247 | for (; | |
1248 | l>0; | |
1249 | l--, p++) { | |
1250 | sprintf(buf," %02x",*p); | |
1251 | CSP_ADDSTR(buf); | |
1252 | } | |
1253 | return adns_s_ok; | |
1254 | } | |
1255 | ||
1256 | /* | |
eb81d633 | 1257 | * _flat (mf) |
1258 | */ | |
1259 | ||
ffbda80c | 1260 | static void mf_flat(adns_query qu, void *data) { } |
1261 | ||
eb81d633 | 1262 | /* |
1263 | * Now the table. | |
1264 | */ | |
1265 | ||
e062dcae | 1266 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
86e7b8d9 | 1267 | |
c5fd1fbb | 1268 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
129d8038 | 1269 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ |
c5fd1fbb | 1270 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
b5c41613 | 1271 | adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) } |
c5fd1fbb | 1272 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
129d8038 | 1273 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_flat, \ |
c5fd1fbb | 1274 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
b5c41613 | 1275 | adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) } |
c5fd1fbb MW |
1276 | |
1277 | #define di_0 0 | |
98a3f706 | 1278 | |
1279 | static const typeinfo typeinfos[] = { | |
eb81d633 | 1280 | /* Must be in ascending order of rrtype ! */ |
609133ee | 1281 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1282 | ||
c5fd1fbb MW |
1283 | FLAT_TYPE(a, "A", 0, inaddr, inaddr, inaddr,inaddr ), |
1284 | DEEP_TYPE(ns_raw, "NS", "raw",str, host_raw,0, domain ), | |
1285 | DEEP_TYPE(cname, "CNAME", 0, str, dom_raw, 0, domain ), | |
1286 | DEEP_TYPE(soa_raw,"SOA", "raw",soa, soa, 0, soa ), | |
1287 | DEEP_TYPE(ptr_raw,"PTR", "raw",str, host_raw,0, domain ), | |
1288 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,hinfo, 0, hinfo ), | |
1289 | DEEP_TYPE(mx_raw, "MX", "raw",intstr, mx_raw, mx_raw,inthost ), | |
1290 | DEEP_TYPE(txt, "TXT", 0, manyistr, txt, 0, txt ), | |
1291 | DEEP_TYPE(rp_raw, "RP", "raw",strpair, rp, 0, rp ), | |
0d244930 | 1292 | FLAT_TYPE(aaaa, "AAAA", 0, in6addr, in6addr, in6addr,in6addr ), |
c5fd1fbb | 1293 | DEEP_TYPE(srv_raw,"SRV", "raw",srvraw , srvraw, srv, srvraw, |
e8e5aeac | 1294 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb | 1295 | |
ef7070af MW |
1296 | FLAT_TYPE(addr, "A", "addr", addr, addr, addr, addr, |
1297 | .getrrsz= gsz_addr), | |
c5fd1fbb | 1298 | DEEP_TYPE(ns, "NS", "+addr",hostaddr, hostaddr,hostaddr,hostaddr ), |
40206a7e MW |
1299 | DEEP_TYPE(ptr, "PTR","checked",str, ptr, 0, domain, |
1300 | .checklabel= ckl_ptr), | |
c5fd1fbb MW |
1301 | DEEP_TYPE(mx, "MX", "+addr",inthostaddr,mx, mx, inthostaddr, ), |
1302 | DEEP_TYPE(srv, "SRV","+addr",srvha, srvha, srv, srvha, | |
e8e5aeac | 1303 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb MW |
1304 | |
1305 | DEEP_TYPE(soa, "SOA","822", soa, soa, 0, soa ), | |
1306 | DEEP_TYPE(rp, "RP", "822", strpair, rp, 0, rp ), | |
98a3f706 | 1307 | }; |
1308 | ||
2c6eb096 | 1309 | static const typeinfo typeinfo_unknown= |
c5fd1fbb | 1310 | DEEP_TYPE(unknown,0, "unknown",byteblock,opaque, 0, opaque ); |
2c6eb096 | 1311 | |
f759e52e | 1312 | const typeinfo *adns__findtype(adns_rrtype type) { |
1313 | const typeinfo *begin, *end, *mid; | |
98a3f706 | 1314 | |
2c6eb096 | 1315 | if (type & adns_r_unknown) return &typeinfo_unknown; |
129d8038 | 1316 | type &= adns_rrt_reprmask; |
2c6eb096 | 1317 | |
98a3f706 | 1318 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1319 | ||
1320 | while (begin < end) { | |
1321 | mid= begin + ((end-begin)>>1); | |
2c6eb096 | 1322 | if (mid->typekey == type) return mid; |
1323 | if (type > mid->typekey) begin= mid+1; | |
98a3f706 | 1324 | else end= mid; |
1325 | } | |
1326 | return 0; | |
1327 | } |