Commit | Line | Data |
---|---|---|
98db6da3 | 1 | /* |
2 | * types.c | |
3 | * - RR-type-specific code, and the machinery to call it | |
4 | */ | |
5 | /* | |
39f45e7e | 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.) | |
98db6da3 | 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 | */ | |
5c596e4d | 26 | |
d4c7b0b1 | 27 | #include <stdlib.h> |
28 | ||
b6b3ac61 | 29 | #include <sys/types.h> |
763d28b9 | 30 | #include <sys/socket.h> |
31 | #include <netinet/in.h> | |
1e9efa71 | 32 | #include <arpa/inet.h> |
33 | ||
5c596e4d | 34 | #include "internal.h" |
35 | ||
9c344a42 | 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) | |
26eb6bdc | 40 | |
14180727 | 41 | /* |
42 | * order of sections: | |
43 | * | |
61093792 | 44 | * _string (pap) |
14180727 | 45 | * _textdata, _qstring (csp) |
46 | * _str (mf,cs) | |
61093792 | 47 | * _intstr (mf,csp,cs) |
14180727 | 48 | * _manyistr (mf,cs) |
49 | * _txt (pa) | |
9136cf0c MW |
50 | * _inaddr (pa,cs,di, +search_sortlist, dip_genaddr) |
51 | * _in6addr (pa,cs,di) | |
52 | * _addr (pa,di,csp,cs, +search_sortlist_sa, dip_sockaddr) | |
14180727 | 53 | * _domain (pap) |
54 | * _host_raw (pa) | |
55 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs) | |
56 | * _mx_raw (pa,di) | |
57 | * _mx (pa,di) | |
58 | * _inthostaddr (mf,cs) | |
cd1bde2f | 59 | * _ptr (pa) |
61093792 | 60 | * _strpair (mf,cs) |
61 | * _intstrpair (mf,cs) | |
62 | * _hinfo (pa) | |
c2875680 | 63 | * _mailbox (pap +pap_mailbox822) |
61093792 | 64 | * _rp (pa) |
65 | * _soa (pa,mf,cs) | |
59d05d1c | 66 | * _srv* (qdpl,(pap),pa,mf,di,(csp),cs,postsort) |
7d0aaee4 | 67 | * _byteblock (mf) |
68 | * _opaque (pa,cs) | |
14180727 | 69 | * _flat (mf) |
70 | * | |
71 | * within each section: | |
2248cdf4 | 72 | * qdpl_* |
14180727 | 73 | * pap_* |
74 | * pa_* | |
75 | * dip_* | |
76 | * di_* | |
77 | * mfp_* | |
78 | * mf_* | |
79 | * csp_* | |
80 | * cs_* | |
59d05d1c | 81 | * postsort_* |
14180727 | 82 | */ |
83 | ||
84 | /* | |
0872e289 | 85 | * _qstring (pap,csp) |
14180727 | 86 | */ |
87 | ||
0872e289 | 88 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
61093792 | 89 | int *len_r, char **str_r) { |
90 | /* Neither len_r nor str_r may be null. | |
91 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; | |
92 | */ | |
93 | const byte *dgram= pai->dgram; | |
94 | int l, cbyte; | |
95 | char *str; | |
96 | ||
97 | cbyte= *cbyte_io; | |
98 | ||
99 | if (cbyte >= max) return adns_s_invaliddata; | |
100 | GET_B(cbyte,l); | |
101 | if (cbyte+l > max) return adns_s_invaliddata; | |
102 | ||
103 | str= adns__alloc_interim(pai->qu, l+1); | |
104 | if (!str) R_NOMEM; | |
105 | ||
106 | str[l]= 0; | |
107 | memcpy(str,dgram+cbyte,l); | |
108 | ||
109 | *len_r= l; | |
110 | *str_r= str; | |
111 | *cbyte_io= cbyte+l; | |
112 | ||
113 | return adns_s_ok; | |
114 | } | |
115 | ||
0872e289 | 116 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
14180727 | 117 | unsigned char ch; |
118 | char buf[10]; | |
119 | int cn; | |
120 | ||
121 | CSP_ADDSTR("\""); | |
122 | for (cn=0; cn<len; cn++) { | |
123 | ch= *dp++; | |
0872e289 | 124 | if (ch == '\\') { |
61093792 | 125 | CSP_ADDSTR("\\\\"); |
0872e289 | 126 | } else if (ch == '"') { |
127 | CSP_ADDSTR("\\\""); | |
128 | } else if (ch >= 32 && ch <= 126) { | |
129 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; | |
14180727 | 130 | } else { |
61093792 | 131 | sprintf(buf,"\\x%02x",ch); |
14180727 | 132 | CSP_ADDSTR(buf); |
133 | } | |
134 | } | |
135 | CSP_ADDSTR("\""); | |
136 | ||
137 | return adns_s_ok; | |
138 | } | |
139 | ||
14180727 | 140 | /* |
0872e289 | 141 | * _str (mf) |
14180727 | 142 | */ |
143 | ||
144 | static void mf_str(adns_query qu, void *datap) { | |
145 | char **rrp= datap; | |
146 | ||
147 | adns__makefinal_str(qu,rrp); | |
148 | } | |
149 | ||
14180727 | 150 | /* |
0872e289 | 151 | * _intstr (mf) |
14180727 | 152 | */ |
153 | ||
154 | static void mf_intstr(adns_query qu, void *datap) { | |
155 | adns_rr_intstr *rrp= datap; | |
156 | ||
157 | adns__makefinal_str(qu,&rrp->str); | |
158 | } | |
159 | ||
14180727 | 160 | /* |
0872e289 | 161 | * _manyistr (mf) |
14180727 | 162 | */ |
163 | ||
164 | static void mf_manyistr(adns_query qu, void *datap) { | |
165 | adns_rr_intstr **rrp= datap; | |
166 | adns_rr_intstr *te, *table; | |
167 | void *tablev; | |
168 | int tc; | |
169 | ||
170 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); | |
171 | tablev= *rrp; | |
172 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); | |
173 | *rrp= table= tablev; | |
174 | for (te= *rrp; te->i >= 0; te++) | |
175 | adns__makefinal_str(qu,&te->str); | |
176 | } | |
177 | ||
14180727 | 178 | /* |
0872e289 | 179 | * _txt (pa,cs) |
14180727 | 180 | */ |
181 | ||
9c344a42 | 182 | static adns_status pa_txt(const parseinfo *pai, int cbyte, |
183 | int max, void *datap) { | |
14180727 | 184 | adns_rr_intstr **rrp= datap, *table, *te; |
185 | const byte *dgram= pai->dgram; | |
186 | int ti, tc, l, startbyte; | |
61093792 | 187 | adns_status st; |
14180727 | 188 | |
189 | startbyte= cbyte; | |
190 | if (cbyte >= max) return adns_s_invaliddata; | |
191 | tc= 0; | |
192 | while (cbyte < max) { | |
193 | GET_B(cbyte,l); | |
194 | cbyte+= l; | |
61093792 | 195 | tc++; |
14180727 | 196 | } |
0872e289 | 197 | if (cbyte != max || !tc) return adns_s_invaliddata; |
14180727 | 198 | |
199 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); | |
200 | if (!table) R_NOMEM; | |
201 | ||
202 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { | |
0872e289 | 203 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
61093792 | 204 | if (st) return st; |
14180727 | 205 | } |
206 | assert(cbyte == max); | |
207 | ||
208 | te->i= -1; | |
209 | te->str= 0; | |
210 | ||
211 | *rrp= table; | |
212 | return adns_s_ok; | |
cd363ffd | 213 | } |
214 | ||
0872e289 | 215 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
216 | const adns_rr_intstr *const *rrp= datap; | |
217 | const adns_rr_intstr *current; | |
218 | adns_status st; | |
219 | int spc; | |
220 | ||
221 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { | |
222 | if (spc) CSP_ADDSTR(" "); | |
223 | st= csp_qstring(vb,current->str,current->i); if (st) return st; | |
224 | } | |
225 | return adns_s_ok; | |
226 | } | |
227 | ||
228 | /* | |
229 | * _hinfo (cs) | |
230 | */ | |
231 | ||
232 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { | |
233 | const adns_rr_intstrpair *rrp= datap; | |
234 | adns_status st; | |
235 | ||
236 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; | |
237 | CSP_ADDSTR(" "); | |
238 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; | |
239 | return adns_s_ok; | |
240 | } | |
241 | ||
14180727 | 242 | /* |
9136cf0c | 243 | * _inaddr (pa,di,cs +search_sortlist, dip_genaddr) |
14180727 | 244 | */ |
245 | ||
9c344a42 | 246 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, |
247 | int max, void *datap) { | |
f2ad23ee | 248 | struct in_addr *storeto= datap; |
68b7fc5f | 249 | |
250 | if (max-cbyte != 4) return adns_s_invaliddata; | |
26eb6bdc | 251 | memcpy(storeto, pai->dgram + cbyte, 4); |
68b7fc5f | 252 | return adns_s_ok; |
253 | } | |
254 | ||
9136cf0c | 255 | static int search_sortlist(adns_state ads, int af, const void *ad) { |
8c3aa944 | 256 | const struct sortlist *slp; |
4e8966f3 MW |
257 | const struct in6_addr *a6; |
258 | union gen_addr a; | |
8c3aa944 | 259 | int i; |
4e8966f3 MW |
260 | int v6mappedp = 0; |
261 | ||
262 | if (af == AF_INET6) { | |
263 | a6 = ad; | |
264 | if (IN6_IS_ADDR_V4MAPPED(a6)) { | |
265 | a.v4.s_addr = htonl(((unsigned long)a6->s6_addr[12] << 24) | | |
266 | ((unsigned long)a6->s6_addr[13] << 16) | | |
267 | ((unsigned long)a6->s6_addr[14] << 8) | | |
268 | ((unsigned long)a6->s6_addr[15] << 0)); | |
269 | v6mappedp = 1; | |
270 | } | |
271 | } | |
272 | ||
8c3aa944 | 273 | for (i=0, slp=ads->sortlist; |
4e8966f3 MW |
274 | i<ads->nsortlist && |
275 | !(af == slp->ai->af && | |
276 | slp->ai->matchp(ad, &slp->base, &slp->mask)) && | |
277 | !(v6mappedp && slp->ai->af == AF_INET && | |
278 | slp->ai->matchp(&a, &slp->base, &slp->mask)); | |
8c3aa944 | 279 | i++, slp++); |
280 | return i; | |
14180727 | 281 | } |
282 | ||
9136cf0c | 283 | static int dip_genaddr(adns_state ads, int af, const void *a, const void *b) { |
8c3aa944 | 284 | int ai, bi; |
285 | ||
286 | if (!ads->nsortlist) return 0; | |
287 | ||
9136cf0c MW |
288 | ai= search_sortlist(ads,af,a); |
289 | bi= search_sortlist(ads,af,b); | |
8c3aa944 | 290 | return bi<ai; |
291 | } | |
292 | ||
9c344a42 | 293 | static int di_inaddr(adns_state ads, |
294 | const void *datap_a, const void *datap_b) { | |
9136cf0c | 295 | return dip_genaddr(ads,AF_INET,datap_a,datap_b); |
f2ad23ee | 296 | } |
297 | ||
298 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { | |
299 | const struct in_addr *rrp= datap, rr= *rrp; | |
1e9efa71 | 300 | const char *ia; |
301 | ||
f2ad23ee | 302 | ia= inet_ntoa(rr); assert(ia); |
26eb6bdc | 303 | CSP_ADDSTR(ia); |
304 | return adns_s_ok; | |
1e9efa71 | 305 | } |
68b7fc5f | 306 | |
14180727 | 307 | /* |
9136cf0c MW |
308 | * _in6addr (pa,di,cs) |
309 | */ | |
310 | ||
311 | static adns_status pa_in6addr(const parseinfo *pai, int cbyte, | |
312 | int max, void *datap) { | |
313 | struct in6_addr *storeto= datap; | |
314 | ||
315 | if (max-cbyte != 16) return adns_s_invaliddata; | |
316 | memcpy(storeto->s6_addr, pai->dgram + cbyte, 16); | |
317 | return adns_s_ok; | |
318 | } | |
319 | ||
320 | static int di_in6addr(adns_state ads, | |
321 | const void *datap_a, const void *datap_b) { | |
322 | return dip_genaddr(ads,AF_INET6,datap_a,AF_INET6,datap_b); | |
323 | } | |
324 | ||
325 | static adns_status cs_in6addr(vbuf *vb, const void *datap) { | |
326 | char buf[INET6_ADDRSTRLEN]; | |
327 | const char *ia; | |
328 | ||
329 | ia= inet_ntop(AF_INET6, datap, buf, sizeof(buf)); assert(ia); | |
330 | CSP_ADDSTR(ia); | |
331 | return adns_s_ok; | |
332 | } | |
333 | ||
334 | /* | |
335 | * _addr (pa,di,csp,cs, +search_sortlist_sa, dip_sockaddr) | |
14180727 | 336 | */ |
337 | ||
9c344a42 | 338 | static adns_status pa_addr(const parseinfo *pai, int cbyte, |
339 | int max, void *datap) { | |
bc01473e | 340 | adns_rr_addr *storeto= datap; |
26eb6bdc | 341 | const byte *dgram= pai->dgram; |
a1d2d0ed | 342 | |
cd363ffd | 343 | if (max-cbyte != 4) return adns_s_invaliddata; |
344 | storeto->len= sizeof(storeto->addr.inet); | |
345 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); | |
346 | storeto->addr.inet.sin_family= AF_INET; | |
cd363ffd | 347 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
348 | return adns_s_ok; | |
349 | } | |
350 | ||
9136cf0c MW |
351 | static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa) |
352 | { | |
353 | const struct afinfo *ai = 0; | |
354 | ||
355 | switch (sa->sa_family) { | |
356 | case AF_INET: ai = &adns__inet_afinfo; break; | |
357 | case AF_INET6: ai = &adns__inet6_afinfo; break; | |
358 | } | |
359 | assert(ai); | |
360 | ||
361 | return search_sortlist(ads, sa->sa_family, ai->sockaddr_to_inaddr(sa)); | |
362 | } | |
363 | ||
364 | static int dip_sockaddr(adns_state ads, | |
365 | const struct sockaddr *sa, | |
366 | const struct sockaddr *sb) | |
367 | { | |
368 | if (!ads->sortlist) return 0; | |
369 | return search_sortlist_sa(ads, sa) > search_sortlist_sa(ads, sb); | |
370 | } | |
371 | ||
8c3aa944 | 372 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
bc01473e | 373 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
cd363ffd | 374 | |
9136cf0c | 375 | return dip_sockaddr(ads, &ap->addr.sa, &bp->addr.sa); |
cd363ffd | 376 | } |
377 | ||
8c3aa944 | 378 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
379 | const adns_state ads= context; | |
380 | ||
381 | return di_addr(ads, datap_a, datap_b); | |
382 | } | |
383 | ||
bc01473e | 384 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
cd363ffd | 385 | const char *ia; |
5448fc9f | 386 | char buf[30]; |
cd363ffd | 387 | |
388 | switch (rrp->addr.inet.sin_family) { | |
389 | case AF_INET: | |
0872e289 | 390 | CSP_ADDSTR("INET "); |
cd363ffd | 391 | ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia); |
26eb6bdc | 392 | CSP_ADDSTR(ia); |
cd363ffd | 393 | break; |
394 | default: | |
395 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); | |
26eb6bdc | 396 | CSP_ADDSTR(buf); |
cd363ffd | 397 | break; |
398 | } | |
399 | return adns_s_ok; | |
400 | } | |
401 | ||
26eb6bdc | 402 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
bc01473e | 403 | const adns_rr_addr *rrp= datap; |
26eb6bdc | 404 | |
405 | return csp_addr(vb,rrp); | |
406 | } | |
407 | ||
14180727 | 408 | /* |
0872e289 | 409 | * _domain (pap,csp,cs) |
410 | * _dom_raw (pa) | |
14180727 | 411 | */ |
412 | ||
26eb6bdc | 413 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
414 | char **domain_r, parsedomain_flags flags) { | |
f2ad23ee | 415 | adns_status st; |
416 | char *dm; | |
417 | ||
26eb6bdc | 418 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
419 | pai->dgram,pai->dglen, cbyte_io, max); | |
f2ad23ee | 420 | if (st) return st; |
26eb6bdc | 421 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
f2ad23ee | 422 | |
26eb6bdc | 423 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
424 | if (!dm) R_NOMEM; | |
f2ad23ee | 425 | |
26eb6bdc | 426 | dm[pai->qu->vb.used]= 0; |
427 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); | |
f2ad23ee | 428 | |
429 | *domain_r= dm; | |
430 | return adns_s_ok; | |
431 | } | |
432 | ||
0872e289 | 433 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
434 | CSP_ADDSTR(domain); | |
435 | if (!*domain) CSP_ADDSTR("."); | |
436 | return adns_s_ok; | |
437 | } | |
438 | ||
439 | static adns_status cs_domain(vbuf *vb, const void *datap) { | |
440 | const char *const *domainp= datap; | |
441 | return csp_domain(vb,*domainp); | |
442 | } | |
443 | ||
9c344a42 | 444 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, |
445 | int max, void *datap) { | |
0872e289 | 446 | char **rrp= datap; |
447 | adns_status st; | |
448 | ||
449 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); | |
450 | if (st) return st; | |
451 | ||
452 | if (cbyte != max) return adns_s_invaliddata; | |
453 | return adns_s_ok; | |
454 | } | |
455 | ||
14180727 | 456 | /* |
457 | * _host_raw (pa) | |
458 | */ | |
459 | ||
9c344a42 | 460 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, |
461 | int max, void *datap) { | |
f2ad23ee | 462 | char **rrp= datap; |
cfdca685 | 463 | adns_status st; |
1e9efa71 | 464 | |
26eb6bdc | 465 | st= pap_domain(pai, &cbyte, max, rrp, |
466 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
f2ad23ee | 467 | if (st) return st; |
468 | ||
469 | if (cbyte != max) return adns_s_invaliddata; | |
470 | return adns_s_ok; | |
471 | } | |
cfdca685 | 472 | |
14180727 | 473 | /* |
bc01473e | 474 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs) |
14180727 | 475 | */ |
a1d2d0ed | 476 | |
26eb6bdc | 477 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
478 | int *cbyte_io, int count, int dmstart) { | |
479 | int rri, naddrs; | |
a1d2d0ed | 480 | int type, class, rdlen, rdstart, ownermatched; |
2c7b101b | 481 | unsigned long ttl; |
26eb6bdc | 482 | adns_status st; |
a1d2d0ed | 483 | |
26eb6bdc | 484 | for (rri=0, naddrs=-1; rri<count; rri++) { |
9c344a42 | 485 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, |
486 | pai->dglen, cbyte_io, | |
2c7b101b | 487 | &type, &class, &ttl, &rdlen, &rdstart, |
26eb6bdc | 488 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
a1d2d0ed | 489 | if (st) return st; |
26eb6bdc | 490 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
491 | if (naddrs>0) break; else continue; | |
492 | } | |
493 | if (naddrs == -1) { | |
494 | naddrs= 0; | |
a1d2d0ed | 495 | } |
9c344a42 | 496 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr))) |
497 | R_NOMEM; | |
2c7b101b | 498 | adns__update_expires(pai->qu,ttl,pai->now); |
bc01473e | 499 | st= pa_addr(pai, rdstart,rdstart+rdlen, |
500 | pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr)); | |
a1d2d0ed | 501 | if (st) return st; |
26eb6bdc | 502 | naddrs++; |
a1d2d0ed | 503 | } |
26eb6bdc | 504 | if (naddrs >= 0) { |
bc01473e | 505 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc | 506 | if (!ha->addrs) R_NOMEM; |
bc01473e | 507 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc | 508 | ha->naddrs= naddrs; |
a1d2d0ed | 509 | ha->astatus= adns_s_ok; |
26eb6bdc | 510 | |
8c3aa944 | 511 | adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf, |
512 | div_addr, pai->ads); | |
a1d2d0ed | 513 | } |
514 | return adns_s_ok; | |
515 | } | |
516 | ||
bc01473e | 517 | static void icb_hostaddr(adns_query parent, adns_query child) { |
bc01473e | 518 | adns_answer *cans= child->answer; |
cd1bde2f | 519 | adns_rr_hostaddr *rrp= child->ctx.info.hostaddr; |
cb32030b | 520 | adns_state ads= parent->ads; |
0872e289 | 521 | adns_status st; |
bc01473e | 522 | |
0872e289 | 523 | st= cans->status; |
524 | rrp->astatus= st; | |
525 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs; | |
bc01473e | 526 | rrp->addrs= cans->rrs.addr; |
9c344a42 | 527 | adns__transfer_interim(child, parent, rrp->addrs, |
528 | rrp->naddrs*sizeof(adns_rr_addr)); | |
cd1bde2f | 529 | |
cb32030b | 530 | if (parent->children.head) { |
531 | LIST_LINK_TAIL(ads->childw,parent); | |
532 | } else { | |
533 | adns__query_done(parent); | |
534 | } | |
bc01473e | 535 | } |
536 | ||
26eb6bdc | 537 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
538 | int max, adns_rr_hostaddr *rrp) { | |
a1d2d0ed | 539 | adns_status st; |
540 | int dmstart, cbyte; | |
ba1ddf08 | 541 | qcontext ctx; |
542 | int id; | |
543 | adns_query nqu; | |
59fbb06a | 544 | adns_queryflags nflags; |
a1d2d0ed | 545 | |
546 | dmstart= cbyte= *cbyte_io; | |
26eb6bdc | 547 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
548 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
a1d2d0ed | 549 | if (st) return st; |
550 | *cbyte_io= cbyte; | |
551 | ||
552 | rrp->astatus= adns_s_ok; | |
553 | rrp->naddrs= -1; | |
554 | rrp->addrs= 0; | |
555 | ||
26eb6bdc | 556 | cbyte= pai->nsstart; |
a1d2d0ed | 557 | |
26eb6bdc | 558 | st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart); |
a1d2d0ed | 559 | if (st) return st; |
560 | if (rrp->naddrs != -1) return adns_s_ok; | |
561 | ||
26eb6bdc | 562 | st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart); |
a1d2d0ed | 563 | if (st) return st; |
564 | if (rrp->naddrs != -1) return adns_s_ok; | |
26eb6bdc | 565 | |
ba1ddf08 | 566 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
567 | pai->dgram, pai->dglen, dmstart, | |
568 | adns_r_addr, adns_qf_quoteok_query); | |
569 | if (st) return st; | |
bc01473e | 570 | |
cd1bde2f | 571 | ctx.ext= 0; |
572 | ctx.callback= icb_hostaddr; | |
573 | ctx.info.hostaddr= rrp; | |
59fbb06a | 574 | |
575 | nflags= adns_qf_quoteok_query; | |
576 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; | |
577 | ||
ba1ddf08 | 578 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
7e6a84a1 | 579 | &pai->qu->vb, id, nflags, pai->now, &ctx); |
ba1ddf08 | 580 | if (st) return st; |
581 | ||
582 | nqu->parent= pai->qu; | |
583 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
26eb6bdc | 584 | |
585 | return adns_s_ok; | |
a1d2d0ed | 586 | } |
587 | ||
9c344a42 | 588 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, |
589 | int max, void *datap) { | |
26eb6bdc | 590 | adns_rr_hostaddr *rrp= datap; |
a1d2d0ed | 591 | adns_status st; |
a1d2d0ed | 592 | |
26eb6bdc | 593 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
a1d2d0ed | 594 | if (st) return st; |
595 | if (cbyte != max) return adns_s_invaliddata; | |
596 | ||
26eb6bdc | 597 | return adns_s_ok; |
598 | } | |
a1d2d0ed | 599 | |
9c344a42 | 600 | static int dip_hostaddr(adns_state ads, |
601 | const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { | |
26eb6bdc | 602 | if (ap->astatus != bp->astatus) return ap->astatus; |
603 | if (ap->astatus) return 0; | |
a1d2d0ed | 604 | |
9136cf0c | 605 | return dip_sockaddr(ads, &ap->addrs[0].addr.sa, &bp->addrs[0].addr.sa); |
26eb6bdc | 606 | } |
607 | ||
9c344a42 | 608 | static int di_hostaddr(adns_state ads, |
609 | const void *datap_a, const void *datap_b) { | |
26eb6bdc | 610 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
611 | ||
8c3aa944 | 612 | return dip_hostaddr(ads, ap,bp); |
a1d2d0ed | 613 | } |
614 | ||
14180727 | 615 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
616 | void *tablev; | |
f2ad23ee | 617 | |
14180727 | 618 | adns__makefinal_str(qu,&rrp->host); |
619 | tablev= rrp->addrs; | |
620 | adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs)); | |
621 | rrp->addrs= tablev; | |
f2ad23ee | 622 | } |
623 | ||
14180727 | 624 | static void mf_hostaddr(adns_query qu, void *datap) { |
625 | adns_rr_hostaddr *rrp= datap; | |
f2ad23ee | 626 | |
14180727 | 627 | mfp_hostaddr(qu,rrp); |
f2ad23ee | 628 | } |
629 | ||
26eb6bdc | 630 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
0fb18816 | 631 | const char *errstr; |
26eb6bdc | 632 | adns_status st; |
9e50e3ac | 633 | char buf[20]; |
26eb6bdc | 634 | int i; |
635 | ||
0fb18816 | 636 | st= csp_domain(vb,rrp->host); if (st) return st; |
26eb6bdc | 637 | |
0872e289 | 638 | CSP_ADDSTR(" "); |
9e50e3ac | 639 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
640 | ||
641 | sprintf(buf," %d ",rrp->astatus); | |
642 | CSP_ADDSTR(buf); | |
0fb18816 | 643 | |
9e50e3ac | 644 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
0fb18816 | 645 | CSP_ADDSTR(" "); |
9e50e3ac | 646 | |
0fb18816 | 647 | errstr= adns_strerror(rrp->astatus); |
648 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; | |
0872e289 | 649 | |
650 | if (rrp->naddrs >= 0) { | |
651 | CSP_ADDSTR(" ("); | |
652 | for (i=0; i<rrp->naddrs; i++) { | |
653 | CSP_ADDSTR(" "); | |
26eb6bdc | 654 | st= csp_addr(vb,&rrp->addrs[i]); |
655 | } | |
0872e289 | 656 | CSP_ADDSTR(" )"); |
657 | } else { | |
658 | CSP_ADDSTR(" ?"); | |
26eb6bdc | 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 | ||
14180727 | 669 | /* |
670 | * _mx_raw (pa,di) | |
671 | */ | |
26eb6bdc | 672 | |
9c344a42 | 673 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, |
674 | int max, void *datap) { | |
14180727 | 675 | const byte *dgram= pai->dgram; |
676 | adns_rr_intstr *rrp= datap; | |
677 | adns_status st; | |
678 | int pref; | |
26eb6bdc | 679 | |
14180727 | 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; | |
26eb6bdc | 686 | |
14180727 | 687 | if (cbyte != max) return adns_s_invaliddata; |
688 | return adns_s_ok; | |
689 | } | |
26eb6bdc | 690 | |
8c3aa944 | 691 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
14180727 | 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; | |
26eb6bdc | 697 | } |
698 | ||
14180727 | 699 | /* |
700 | * _mx (pa,di) | |
701 | */ | |
26eb6bdc | 702 | |
9c344a42 | 703 | static adns_status pa_mx(const parseinfo *pai, int cbyte, |
704 | int max, void *datap) { | |
14180727 | 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 | ||
8c3aa944 | 720 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
14180727 | 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; | |
8c3aa944 | 725 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
26eb6bdc | 726 | } |
727 | ||
14180727 | 728 | /* |
729 | * _inthostaddr (mf,cs) | |
730 | */ | |
731 | ||
26eb6bdc | 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 | ||
14180727 | 738 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
739 | const adns_rr_inthostaddr *rrp= datap; | |
740 | char buf[10]; | |
f2ad23ee | 741 | |
14180727 | 742 | sprintf(buf,"%u ",rrp->i); |
743 | CSP_ADDSTR(buf); | |
744 | ||
745 | return csp_hostaddr(vb,&rrp->ha); | |
cfdca685 | 746 | } |
747 | ||
0872e289 | 748 | /* |
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 | ||
cd1bde2f | 761 | /* |
762 | * _ptr (pa, +icb_ptr) | |
763 | */ | |
764 | ||
765 | static void icb_ptr(adns_query parent, adns_query child) { | |
766 | adns_answer *cans= child->answer; | |
767 | const adns_rr_addr *queried, *found; | |
cb32030b | 768 | adns_state ads= parent->ads; |
cd1bde2f | 769 | int i; |
770 | ||
771 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { | |
772 | adns__query_fail(parent,adns_s_inconsistent); | |
773 | return; | |
774 | } else if (cans->status) { | |
775 | adns__query_fail(parent,cans->status); | |
776 | return; | |
777 | } | |
778 | ||
779 | queried= &parent->ctx.info.ptr_parent_addr; | |
780 | for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) { | |
781 | if (queried->len == found->len && | |
782 | !memcmp(&queried->addr,&found->addr,queried->len)) { | |
cb32030b | 783 | if (!parent->children.head) { |
784 | adns__query_done(parent); | |
785 | return; | |
786 | } else { | |
787 | LIST_LINK_TAIL(ads->childw,parent); | |
788 | return; | |
789 | } | |
cd1bde2f | 790 | } |
791 | } | |
792 | ||
793 | adns__query_fail(parent,adns_s_inconsistent); | |
794 | } | |
795 | ||
9c344a42 | 796 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, |
797 | int max, void *datap) { | |
5448fc9f | 798 | static const char *const (expectdomain[])= { DNS_INADDR_ARPA }; |
cd1bde2f | 799 | |
800 | char **rrp= datap; | |
801 | adns_status st; | |
802 | adns_rr_addr *ap; | |
803 | findlabel_state fls; | |
804 | char *ep; | |
805 | byte ipv[4]; | |
806 | char labbuf[4]; | |
807 | int cbyte, i, lablen, labstart, l, id; | |
808 | adns_query nqu; | |
809 | qcontext ctx; | |
810 | ||
811 | cbyte= dmstart; | |
812 | st= pap_domain(pai, &cbyte, max, rrp, | |
813 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
814 | if (st) return st; | |
815 | if (cbyte != max) return adns_s_invaliddata; | |
816 | ||
817 | ap= &pai->qu->ctx.info.ptr_parent_addr; | |
818 | if (!ap->len) { | |
819 | adns__findlabel_start(&fls, pai->ads, -1, pai->qu, | |
820 | pai->qu->query_dgram, pai->qu->query_dglen, | |
821 | pai->qu->query_dglen, DNS_HDRSIZE, 0); | |
822 | for (i=0; i<4; i++) { | |
823 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); | |
9b86645c | 824 | if (lablen<=0 || lablen>3) return adns_s_querydomainwrong; |
9c344a42 | 825 | memcpy(labbuf, pai->qu->query_dgram + labstart, lablen); |
826 | labbuf[lablen]= 0; | |
827 | ipv[3-i]= strtoul(labbuf,&ep,10); | |
828 | if (*ep) return adns_s_querydomainwrong; | |
cd1bde2f | 829 | if (lablen>1 && pai->qu->query_dgram[labstart]=='0') |
9b86645c | 830 | return adns_s_querydomainwrong; |
cd1bde2f | 831 | } |
832 | for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) { | |
833 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); | |
834 | l= strlen(expectdomain[i]); | |
9c344a42 | 835 | if (lablen != l || |
836 | memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l)) | |
9b86645c | 837 | return adns_s_querydomainwrong; |
cd1bde2f | 838 | } |
839 | st= adns__findlabel_next(&fls,&lablen,0); assert(!st); | |
9b86645c | 840 | if (lablen) return adns_s_querydomainwrong; |
cd1bde2f | 841 | |
842 | ap->len= sizeof(struct sockaddr_in); | |
843 | memset(&ap->addr,0,sizeof(ap->addr.inet)); | |
844 | ap->addr.inet.sin_family= AF_INET; | |
845 | ap->addr.inet.sin_addr.s_addr= | |
846 | htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3])); | |
847 | } | |
848 | ||
849 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, | |
850 | pai->dgram, pai->dglen, dmstart, | |
851 | adns_r_addr, adns_qf_quoteok_query); | |
852 | if (st) return st; | |
853 | ||
854 | ctx.ext= 0; | |
855 | ctx.callback= icb_ptr; | |
856 | memset(&ctx.info,0,sizeof(ctx.info)); | |
857 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), | |
858 | &pai->qu->vb, id, | |
7e6a84a1 | 859 | adns_qf_quoteok_query, pai->now, &ctx); |
cd1bde2f | 860 | if (st) return st; |
861 | ||
862 | nqu->parent= pai->qu; | |
863 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
cd1bde2f | 864 | return adns_s_ok; |
865 | } | |
866 | ||
61093792 | 867 | /* |
0872e289 | 868 | * _strpair (mf) |
61093792 | 869 | */ |
870 | ||
871 | static void mf_strpair(adns_query qu, void *datap) { | |
872 | adns_rr_strpair *rrp= datap; | |
873 | ||
874 | adns__makefinal_str(qu,&rrp->array[0]); | |
875 | adns__makefinal_str(qu,&rrp->array[1]); | |
876 | } | |
877 | ||
61093792 | 878 | /* |
0872e289 | 879 | * _intstrpair (mf) |
61093792 | 880 | */ |
881 | ||
882 | static void mf_intstrpair(adns_query qu, void *datap) { | |
883 | adns_rr_intstrpair *rrp= datap; | |
884 | ||
885 | adns__makefinal_str(qu,&rrp->array[0].str); | |
886 | adns__makefinal_str(qu,&rrp->array[1].str); | |
887 | } | |
888 | ||
61093792 | 889 | /* |
890 | * _hinfo (pa) | |
891 | */ | |
892 | ||
9c344a42 | 893 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, |
894 | int max, void *datap) { | |
61093792 | 895 | adns_rr_intstrpair *rrp= datap; |
896 | adns_status st; | |
897 | int i; | |
898 | ||
899 | for (i=0; i<2; i++) { | |
0872e289 | 900 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
61093792 | 901 | if (st) return st; |
902 | } | |
903 | ||
904 | if (cbyte != max) return adns_s_invaliddata; | |
905 | ||
906 | return adns_s_ok; | |
907 | } | |
908 | ||
909 | /* | |
0872e289 | 910 | * _mailbox (pap,cs) |
61093792 | 911 | */ |
912 | ||
9c344a42 | 913 | static adns_status pap_mailbox822(const parseinfo *pai, |
914 | int *cbyte_io, int max, char **mb_r) { | |
6f2c243f | 915 | int lablen, labstart, i, needquote, c, r, neednorm; |
916 | const unsigned char *p; | |
917 | char *str; | |
918 | findlabel_state fls; | |
919 | adns_status st; | |
920 | vbuf *vb; | |
921 | ||
922 | vb= &pai->qu->vb; | |
923 | vb->used= 0; | |
924 | adns__findlabel_start(&fls, pai->ads, | |
925 | -1, pai->qu, | |
926 | pai->dgram, pai->dglen, max, | |
927 | *cbyte_io, cbyte_io); | |
928 | st= adns__findlabel_next(&fls,&lablen,&labstart); | |
929 | if (!lablen) { | |
0872e289 | 930 | adns__vbuf_appendstr(vb,"."); |
6f2c243f | 931 | goto x_ok; |
932 | } | |
933 | ||
934 | neednorm= 1; | |
935 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { | |
936 | c= *p++; | |
937 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; | |
938 | if (c == '.' && !neednorm) neednorm= 1; | |
67ca39c8 | 939 | else if (c==' ' || c>=127 || ctype_822special(c)) needquote++; |
6f2c243f | 940 | else neednorm= 0; |
941 | } | |
942 | ||
943 | if (needquote || neednorm) { | |
944 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; | |
945 | adns__vbuf_appendq(vb,"\"",1); | |
946 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { | |
947 | c= *p; | |
0872e289 | 948 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
6f2c243f | 949 | adns__vbuf_appendq(vb,p,1); |
950 | } | |
951 | adns__vbuf_appendq(vb,"\"",1); | |
952 | } else { | |
953 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; | |
954 | } | |
955 | ||
956 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; | |
957 | ||
958 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); | |
959 | if (st) return st; | |
960 | ||
961 | x_ok: | |
962 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; | |
963 | memcpy(str,vb->buf,vb->used); | |
964 | str[vb->used]= 0; | |
965 | *mb_r= str; | |
966 | return adns_s_ok; | |
61093792 | 967 | } |
968 | ||
c2875680 | 969 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
970 | char **mb_r) { | |
7d0aaee4 | 971 | if (pai->qu->typei->typekey & adns__qtf_mail822) { |
c2875680 | 972 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
973 | } else { | |
0872e289 | 974 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
c2875680 | 975 | } |
976 | } | |
977 | ||
0872e289 | 978 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
979 | return csp_domain(vb,mailbox); | |
980 | } | |
981 | ||
61093792 | 982 | /* |
0872e289 | 983 | * _rp (pa,cs) |
61093792 | 984 | */ |
985 | ||
9c344a42 | 986 | static adns_status pa_rp(const parseinfo *pai, int cbyte, |
987 | int max, void *datap) { | |
61093792 | 988 | adns_rr_strpair *rrp= datap; |
989 | adns_status st; | |
990 | ||
991 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); | |
992 | if (st) return st; | |
993 | ||
994 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); | |
995 | if (st) return st; | |
996 | ||
997 | if (cbyte != max) return adns_s_invaliddata; | |
998 | return adns_s_ok; | |
999 | } | |
1000 | ||
0872e289 | 1001 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
1002 | const adns_rr_strpair *rrp= datap; | |
1003 | adns_status st; | |
1004 | ||
1005 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; | |
1006 | CSP_ADDSTR(" "); | |
1007 | st= csp_domain(vb,rrp->array[1]); if (st) return st; | |
1008 | ||
1009 | return adns_s_ok; | |
1010 | } | |
1011 | ||
61093792 | 1012 | /* |
1013 | * _soa (pa,mf,cs) | |
1014 | */ | |
1015 | ||
9c344a42 | 1016 | static adns_status pa_soa(const parseinfo *pai, int cbyte, |
1017 | int max, void *datap) { | |
61093792 | 1018 | adns_rr_soa *rrp= datap; |
1019 | const byte *dgram= pai->dgram; | |
1020 | adns_status st; | |
1021 | int msw, lsw, i; | |
1022 | ||
1023 | st= pap_domain(pai, &cbyte, max, &rrp->mname, | |
1024 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1025 | if (st) return st; | |
1026 | ||
1027 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); | |
1028 | if (st) return st; | |
1029 | ||
1030 | if (cbyte+20 != max) return adns_s_invaliddata; | |
1031 | ||
1032 | for (i=0; i<5; i++) { | |
1033 | GET_W(cbyte,msw); | |
1034 | GET_W(cbyte,lsw); | |
1035 | (&rrp->serial)[i]= (msw<<16) | lsw; | |
1036 | } | |
1037 | ||
1038 | return adns_s_ok; | |
1039 | } | |
1040 | ||
1041 | static void mf_soa(adns_query qu, void *datap) { | |
1042 | adns_rr_soa *rrp= datap; | |
1043 | ||
1044 | adns__makefinal_str(qu,&rrp->mname); | |
1045 | adns__makefinal_str(qu,&rrp->rname); | |
1046 | } | |
1047 | ||
1048 | static adns_status cs_soa(vbuf *vb, const void *datap) { | |
1049 | const adns_rr_soa *rrp= datap; | |
1050 | char buf[20]; | |
1051 | int i; | |
1052 | adns_status st; | |
1053 | ||
0872e289 | 1054 | st= csp_domain(vb,rrp->mname); if (st) return st; |
61093792 | 1055 | CSP_ADDSTR(" "); |
0872e289 | 1056 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
61093792 | 1057 | |
1058 | for (i=0; i<5; i++) { | |
1059 | sprintf(buf," %lu",(&rrp->serial)[i]); | |
1060 | CSP_ADDSTR(buf); | |
1061 | } | |
1062 | ||
1063 | return adns_s_ok; | |
1064 | } | |
1065 | ||
bddb4c18 | 1066 | /* |
59d05d1c | 1067 | * _srv* (pa*2,di,cs*2,qdpl,postsort) |
bddb4c18 | 1068 | */ |
1069 | ||
1070 | static adns_status qdpl_srv(adns_state ads, | |
1071 | const char **p_io, const char *pe, int labelnum, | |
1072 | char label_r[DNS_MAXDOMAIN], int *ll_io, | |
1073 | adns_queryflags flags, | |
1074 | const typeinfo *typei) { | |
1075 | int useflags; | |
1076 | const char *p_orig; | |
1077 | adns_status st; | |
1078 | ||
1079 | if (labelnum < 2 && !(flags & adns_qf_quoteok_query)) { | |
1080 | useflags= adns_qf_quoteok_query; | |
1081 | p_orig= *p_io; | |
1082 | } else { | |
1083 | useflags= flags; | |
1084 | p_orig= 0; | |
1085 | } | |
1086 | st= adns__qdpl_normal(ads, p_io,pe, labelnum,label_r, ll_io, useflags,typei); | |
1087 | if (st) return st; | |
1088 | ||
1089 | if (p_orig) { | |
1090 | int ll= *ll_io; | |
1091 | if (!ll || label_r[0]!='_') | |
1092 | return adns_s_querydomaininvalid; | |
1093 | if (memchr(p_orig+1, '\\', pe - (p_orig+1))) | |
1094 | return adns_s_querydomaininvalid; | |
1095 | } | |
1096 | return adns_s_ok; | |
1097 | } | |
1098 | ||
7602bb91 | 1099 | static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max, |
375c6c48 | 1100 | adns_rr_srvha *rrp |
1101 | /* might be adns_rr_srvraw* */) { | |
2248cdf4 | 1102 | const byte *dgram= pai->dgram; |
7602bb91 | 1103 | int ti, cbyte; |
1104 | ||
1105 | cbyte= *cbyte_io; | |
1106 | if ((*cbyte_io += 6) > max) return adns_s_invaliddata; | |
2248cdf4 | 1107 | |
1108 | rrp->priority= GET_W(cbyte, ti); | |
1109 | rrp->weight= GET_W(cbyte, ti); | |
1110 | rrp->port= GET_W(cbyte, ti); | |
1111 | return adns_s_ok; | |
1112 | } | |
1113 | ||
1114 | static adns_status pa_srvraw(const parseinfo *pai, int cbyte, | |
1115 | int max, void *datap) { | |
1116 | adns_rr_srvraw *rrp= datap; | |
1117 | adns_status st; | |
1118 | ||
7602bb91 | 1119 | st= pap_srv_begin(pai,&cbyte,max,datap); |
2248cdf4 | 1120 | if (st) return st; |
1121 | ||
1122 | st= pap_domain(pai, &cbyte, max, &rrp->host, | |
1123 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1124 | if (st) return st; | |
1125 | ||
1126 | if (cbyte != max) return adns_s_invaliddata; | |
1127 | return adns_s_ok; | |
1128 | } | |
1129 | ||
1130 | static adns_status pa_srvha(const parseinfo *pai, int cbyte, | |
1131 | int max, void *datap) { | |
1132 | adns_rr_srvha *rrp= datap; | |
1133 | adns_status st; | |
1134 | ||
7602bb91 | 1135 | st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st; |
2248cdf4 | 1136 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st; |
1137 | if (cbyte != max) return adns_s_invaliddata; | |
1138 | return adns_s_ok; | |
1139 | } | |
1140 | ||
1141 | static void mf_srvraw(adns_query qu, void *datap) { | |
1142 | adns_rr_srvraw *rrp= datap; | |
1143 | adns__makefinal_str(qu, &rrp->host); | |
1144 | } | |
1145 | ||
1146 | static void mf_srvha(adns_query qu, void *datap) { | |
1147 | adns_rr_srvha *rrp= datap; | |
1148 | mfp_hostaddr(qu,&rrp->ha); | |
1149 | } | |
1150 | ||
1151 | static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) { | |
1152 | const adns_rr_srvraw *ap= datap_a, *bp= datap_b; | |
1153 | /* might be const adns_rr_svhostaddr* */ | |
1154 | ||
1155 | if (ap->priority < bp->priority) return 0; | |
1156 | if (ap->priority > bp->priority) return 1; | |
1157 | return 0; | |
1158 | } | |
1159 | ||
375c6c48 | 1160 | static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp |
1161 | /* might be adns_rr_srvraw* */) { | |
2248cdf4 | 1162 | char buf[30]; |
1163 | sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port); | |
1164 | CSP_ADDSTR(buf); | |
1165 | return adns_s_ok; | |
1166 | } | |
1167 | ||
1168 | static adns_status cs_srvraw(vbuf *vb, const void *datap) { | |
1169 | const adns_rr_srvraw *rrp= datap; | |
1170 | adns_status st; | |
1171 | ||
375c6c48 | 1172 | st= csp_srv_begin(vb,(const void*)rrp); if (st) return st; |
2248cdf4 | 1173 | return csp_domain(vb,rrp->host); |
1174 | } | |
1175 | ||
1176 | static adns_status cs_srvha(vbuf *vb, const void *datap) { | |
1177 | const adns_rr_srvha *rrp= datap; | |
1178 | adns_status st; | |
1179 | ||
375c6c48 | 1180 | st= csp_srv_begin(vb,(const void*)datap); if (st) return st; |
2248cdf4 | 1181 | return csp_hostaddr(vb,&rrp->ha); |
1182 | } | |
1183 | ||
375c6c48 | 1184 | static void postsort_srv(adns_state ads, void *array, int nrrs, |
59d05d1c | 1185 | const struct typeinfo *typei) { |
375c6c48 | 1186 | /* we treat everything in the array as if it were an adns_rr_srvha |
1187 | * even though the array might be of adns_rr_srvraw. That's OK | |
1188 | * because they have the same prefix, which is all we access. | |
1189 | * We use typei->rrsz, too, rather than naive array indexing, of course. | |
1190 | */ | |
1191 | char *workbegin, *workend, *search, *arrayend; | |
1192 | const adns_rr_srvha *rr; | |
1193 | union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp; | |
1194 | int cpriority, totalweight, runtotal; | |
1195 | long randval; | |
1196 | ||
1197 | for (workbegin= array, arrayend= workbegin + typei->rrsz * nrrs; | |
1198 | workbegin < arrayend; | |
1199 | workbegin= workend) { | |
1200 | cpriority= (rr=(void*)workbegin)->priority; | |
1201 | ||
1202 | for (workend= workbegin, totalweight= 0; | |
1203 | workend < arrayend && (rr=(void*)workend)->priority == cpriority; | |
1204 | workend += typei->rrsz) { | |
1205 | totalweight += rr->weight; | |
375c6c48 | 1206 | } |
1207 | ||
1208 | /* Now workbegin..(workend-1) incl. are exactly all of the RRs of | |
1209 | * cpriority. From now on, workbegin points to the `remaining' | |
1210 | * records: we select one record at a time (RFC2782 `Usage rules' | |
1211 | * and `Format of the SRV RR' subsection `Weight') to place at | |
1212 | * workbegin (swapping with the one that was there, and then | |
1213 | * advance workbegin. */ | |
1214 | for (; | |
1215 | workbegin + typei->rrsz < workend; /* don't bother if just one */ | |
1216 | workbegin += typei->rrsz) { | |
1217 | ||
1218 | randval= nrand48(ads->rand48xsubi); | |
1219 | randval %= (totalweight + 1); | |
375c6c48 | 1220 | /* makes it into 0..totalweight inclusive; with 2^10 RRs, |
1221 | * totalweight must be <= 2^26 so probability nonuniformity is | |
1222 | * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie | |
1223 | * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5). | |
1224 | */ | |
1225 | ||
1226 | for (search=workbegin, runtotal=0; | |
1227 | (runtotal += (rr=(void*)search)->weight) < randval; | |
1228 | search += typei->rrsz); | |
375c6c48 | 1229 | assert(search < arrayend); |
1230 | totalweight -= rr->weight; | |
1231 | if (search != workbegin) { | |
1232 | memcpy(&rrtmp, workbegin, typei->rrsz); | |
1233 | memcpy(workbegin, search, typei->rrsz); | |
1234 | memcpy(search, &rrtmp, typei->rrsz); | |
1235 | } | |
1236 | } | |
1237 | } | |
59d05d1c | 1238 | /* tests: |
1239 | * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. | |
1240 | * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk. | |
1241 | * ./adnshost_s -t srv- _jabber._tcp.jabber.org | |
1242 | */ | |
1243 | } | |
1244 | ||
7d0aaee4 | 1245 | /* |
1246 | * _byteblock (mf) | |
1247 | */ | |
1248 | ||
1249 | static void mf_byteblock(adns_query qu, void *datap) { | |
1250 | adns_rr_byteblock *rrp= datap; | |
1251 | void *bytes= rrp->data; | |
1252 | adns__makefinal_block(qu,&bytes,rrp->len); | |
1253 | rrp->data= bytes; | |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * _opaque (pa,cs) | |
1258 | */ | |
1259 | ||
1260 | static adns_status pa_opaque(const parseinfo *pai, int cbyte, | |
1261 | int max, void *datap) { | |
1262 | adns_rr_byteblock *rrp= datap; | |
1263 | ||
1264 | rrp->len= max - cbyte; | |
1265 | rrp->data= adns__alloc_interim(pai->qu, rrp->len); | |
1266 | if (!rrp->data) R_NOMEM; | |
1267 | memcpy(rrp->data, pai->dgram + cbyte, rrp->len); | |
1268 | return adns_s_ok; | |
1269 | } | |
1270 | ||
1271 | static adns_status cs_opaque(vbuf *vb, const void *datap) { | |
1272 | const adns_rr_byteblock *rrp= datap; | |
1273 | char buf[10]; | |
1274 | int l; | |
1275 | unsigned char *p; | |
1276 | ||
1277 | sprintf(buf,"\\# %d",rrp->len); | |
1278 | CSP_ADDSTR(buf); | |
1279 | ||
1280 | for (l= rrp->len, p= rrp->data; | |
1281 | l>=4; | |
1282 | l -= 4, p += 4) { | |
1283 | sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]); | |
1284 | CSP_ADDSTR(buf); | |
1285 | } | |
1286 | for (; | |
1287 | l>0; | |
1288 | l--, p++) { | |
1289 | sprintf(buf," %02x",*p); | |
1290 | CSP_ADDSTR(buf); | |
1291 | } | |
1292 | return adns_s_ok; | |
1293 | } | |
1294 | ||
14180727 | 1295 | /* |
1296 | * _flat (mf) | |
1297 | */ | |
1298 | ||
cfdca685 | 1299 | static void mf_flat(adns_query qu, void *data) { } |
1300 | ||
14180727 | 1301 | /* |
1302 | * Now the table. | |
1303 | */ | |
1304 | ||
f2ad23ee | 1305 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
1e9efa71 | 1306 | |
cfdca685 | 1307 | #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb |
1308 | #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb | |
5c596e4d | 1309 | |
bddb4c18 | 1310 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \ |
1311 | { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ | |
59d05d1c | 1312 | printer,parser,comparer, adns__qdpl_normal,0 } |
bddb4c18 | 1313 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \ |
1314 | { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_flat, \ | |
59d05d1c | 1315 | printer,parser,comparer, adns__qdpl_normal,0 } |
1316 | #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer,qdpl,postsort) \ | |
1317 | { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ | |
1318 | printer,parser,comparer,qdpl,postsort } | |
5c596e4d | 1319 | |
1320 | static const typeinfo typeinfos[] = { | |
14180727 | 1321 | /* Must be in ascending order of rrtype ! */ |
9c344a42 | 1322 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1323 | ||
1324 | FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr,cs_inaddr ), | |
1325 | DEEP_TYPE(ns_raw, "NS", "raw",str, pa_host_raw,0, cs_domain ), | |
1326 | DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ), | |
1327 | DEEP_TYPE(soa_raw,"SOA", "raw",soa, pa_soa, 0, cs_soa ), | |
1328 | DEEP_TYPE(ptr_raw,"PTR", "raw",str, pa_host_raw,0, cs_domain ), | |
1329 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,pa_hinfo, 0, cs_hinfo ), | |
1330 | DEEP_TYPE(mx_raw, "MX", "raw",intstr, pa_mx_raw, di_mx_raw,cs_inthost ), | |
1331 | DEEP_TYPE(txt, "TXT", 0, manyistr,pa_txt, 0, cs_txt ), | |
1332 | DEEP_TYPE(rp_raw, "RP", "raw",strpair, pa_rp, 0, cs_rp ), | |
9136cf0c | 1333 | FLAT_TYPE(aaaa, "AAAA", 0, in6addr, pa_in6addr, di_in6addr,cs_in6addr ), |
59d05d1c | 1334 | XTRA_TYPE(srv_raw,"SRV", "raw",srvraw , pa_srvraw, di_srv, cs_srvraw, |
1335 | qdpl_srv, postsort_srv), | |
9c344a42 | 1336 | |
1337 | FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ), | |
1338 | DEEP_TYPE(ns, "NS", "+addr",hostaddr,pa_hostaddr,di_hostaddr,cs_hostaddr ), | |
1339 | DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ), | |
1340 | DEEP_TYPE(mx, "MX", "+addr",inthostaddr,pa_mx, di_mx, cs_inthostaddr), | |
59d05d1c | 1341 | XTRA_TYPE(srv, "SRV","+addr",srvha, pa_srvha, di_srv, cs_srvha, |
1342 | qdpl_srv, postsort_srv), | |
bddb4c18 | 1343 | |
9c344a42 | 1344 | DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ), |
1345 | DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ), | |
5c596e4d | 1346 | }; |
1347 | ||
7d0aaee4 | 1348 | static const typeinfo typeinfo_unknown= |
1349 | DEEP_TYPE(unknown,0, "unknown",byteblock,pa_opaque, 0, cs_opaque ); | |
1350 | ||
c9afe7bb | 1351 | const typeinfo *adns__findtype(adns_rrtype type) { |
1352 | const typeinfo *begin, *end, *mid; | |
5c596e4d | 1353 | |
7d0aaee4 | 1354 | if (type & adns_r_unknown) return &typeinfo_unknown; |
1355 | ||
5c596e4d | 1356 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1357 | ||
1358 | while (begin < end) { | |
1359 | mid= begin + ((end-begin)>>1); | |
7d0aaee4 | 1360 | if (mid->typekey == type) return mid; |
1361 | if (type > mid->typekey) begin= mid+1; | |
5c596e4d | 1362 | else end= mid; |
1363 | } | |
1364 | return 0; | |
1365 | } |