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) | |
382b81f7 | 50 | * _inaddr (pa,dip,di,cs +search_sortlist) |
b0a32b17 | 51 | * _addr (pa,di,div,csp,cs,gsz) |
382b81f7 MW |
52 | * _domain (pap,csp,cs) |
53 | * _dom_raw (pa) | |
eb81d633 | 54 | * _host_raw (pa) |
382b81f7 MW |
55 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs |
56 | * +pap_findaddrs, icb_hostaddr) | |
eb81d633 | 57 | * _mx_raw (pa,di) |
58 | * _mx (pa,di) | |
59 | * _inthostaddr (mf,cs) | |
382b81f7 | 60 | * _inthost (cs) |
938b0228 | 61 | * _ptr (ckl,pa +icb_ptr) |
382b81f7 MW |
62 | * _strpair (mf) |
63 | * _intstrpair (mf) | |
9ec44266 | 64 | * _hinfo (pa) |
382b81f7 MW |
65 | * _mailbox (pap,csp +pap_mailbox822) |
66 | * _rp (pa,cs) | |
9ec44266 | 67 | * _soa (pa,mf,cs) |
e8e5aeac | 68 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
2c6eb096 | 69 | * _byteblock (mf) |
70 | * _opaque (pa,cs) | |
eb81d633 | 71 | * _flat (mf) |
72 | * | |
73 | * within each section: | |
e8e5aeac | 74 | * ckl_* |
eb81d633 | 75 | * pap_* |
76 | * pa_* | |
77 | * dip_* | |
78 | * di_* | |
79 | * mfp_* | |
80 | * mf_* | |
81 | * csp_* | |
82 | * cs_* | |
b0a32b17 | 83 | * gsz_* |
d24e2a7e | 84 | * postsort_* |
eb81d633 | 85 | */ |
86 | ||
87 | /* | |
b365d68a | 88 | * _qstring (pap,csp) |
eb81d633 | 89 | */ |
90 | ||
b365d68a | 91 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
9ec44266 | 92 | int *len_r, char **str_r) { |
93 | /* Neither len_r nor str_r may be null. | |
94 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; | |
95 | */ | |
96 | const byte *dgram= pai->dgram; | |
97 | int l, cbyte; | |
98 | char *str; | |
99 | ||
100 | cbyte= *cbyte_io; | |
101 | ||
102 | if (cbyte >= max) return adns_s_invaliddata; | |
103 | GET_B(cbyte,l); | |
104 | if (cbyte+l > max) return adns_s_invaliddata; | |
105 | ||
106 | str= adns__alloc_interim(pai->qu, l+1); | |
107 | if (!str) R_NOMEM; | |
108 | ||
109 | str[l]= 0; | |
110 | memcpy(str,dgram+cbyte,l); | |
111 | ||
112 | *len_r= l; | |
113 | *str_r= str; | |
114 | *cbyte_io= cbyte+l; | |
115 | ||
116 | return adns_s_ok; | |
117 | } | |
118 | ||
b365d68a | 119 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
eb81d633 | 120 | unsigned char ch; |
121 | char buf[10]; | |
122 | int cn; | |
123 | ||
124 | CSP_ADDSTR("\""); | |
125 | for (cn=0; cn<len; cn++) { | |
126 | ch= *dp++; | |
b365d68a | 127 | if (ch == '\\') { |
9ec44266 | 128 | CSP_ADDSTR("\\\\"); |
b365d68a | 129 | } else if (ch == '"') { |
130 | CSP_ADDSTR("\\\""); | |
131 | } else if (ch >= 32 && ch <= 126) { | |
132 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; | |
eb81d633 | 133 | } else { |
9ec44266 | 134 | sprintf(buf,"\\x%02x",ch); |
eb81d633 | 135 | CSP_ADDSTR(buf); |
136 | } | |
137 | } | |
138 | CSP_ADDSTR("\""); | |
139 | ||
140 | return adns_s_ok; | |
141 | } | |
142 | ||
eb81d633 | 143 | /* |
b365d68a | 144 | * _str (mf) |
eb81d633 | 145 | */ |
146 | ||
147 | static void mf_str(adns_query qu, void *datap) { | |
148 | char **rrp= datap; | |
149 | ||
150 | adns__makefinal_str(qu,rrp); | |
151 | } | |
152 | ||
eb81d633 | 153 | /* |
b365d68a | 154 | * _intstr (mf) |
eb81d633 | 155 | */ |
156 | ||
157 | static void mf_intstr(adns_query qu, void *datap) { | |
158 | adns_rr_intstr *rrp= datap; | |
159 | ||
160 | adns__makefinal_str(qu,&rrp->str); | |
161 | } | |
162 | ||
eb81d633 | 163 | /* |
b365d68a | 164 | * _manyistr (mf) |
eb81d633 | 165 | */ |
166 | ||
167 | static void mf_manyistr(adns_query qu, void *datap) { | |
168 | adns_rr_intstr **rrp= datap; | |
169 | adns_rr_intstr *te, *table; | |
170 | void *tablev; | |
171 | int tc; | |
172 | ||
173 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); | |
174 | tablev= *rrp; | |
175 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); | |
176 | *rrp= table= tablev; | |
177 | for (te= *rrp; te->i >= 0; te++) | |
178 | adns__makefinal_str(qu,&te->str); | |
179 | } | |
180 | ||
eb81d633 | 181 | /* |
b365d68a | 182 | * _txt (pa,cs) |
eb81d633 | 183 | */ |
184 | ||
609133ee | 185 | static adns_status pa_txt(const parseinfo *pai, int cbyte, |
186 | int max, void *datap) { | |
eb81d633 | 187 | adns_rr_intstr **rrp= datap, *table, *te; |
188 | const byte *dgram= pai->dgram; | |
189 | int ti, tc, l, startbyte; | |
9ec44266 | 190 | adns_status st; |
eb81d633 | 191 | |
192 | startbyte= cbyte; | |
193 | if (cbyte >= max) return adns_s_invaliddata; | |
194 | tc= 0; | |
195 | while (cbyte < max) { | |
196 | GET_B(cbyte,l); | |
197 | cbyte+= l; | |
9ec44266 | 198 | tc++; |
eb81d633 | 199 | } |
b365d68a | 200 | if (cbyte != max || !tc) return adns_s_invaliddata; |
eb81d633 | 201 | |
202 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); | |
203 | if (!table) R_NOMEM; | |
204 | ||
205 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { | |
b365d68a | 206 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
9ec44266 | 207 | if (st) return st; |
eb81d633 | 208 | } |
209 | assert(cbyte == max); | |
210 | ||
211 | te->i= -1; | |
212 | te->str= 0; | |
213 | ||
214 | *rrp= table; | |
215 | return adns_s_ok; | |
828d89bd | 216 | } |
217 | ||
b365d68a | 218 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
219 | const adns_rr_intstr *const *rrp= datap; | |
220 | const adns_rr_intstr *current; | |
221 | adns_status st; | |
222 | int spc; | |
223 | ||
224 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { | |
225 | if (spc) CSP_ADDSTR(" "); | |
226 | st= csp_qstring(vb,current->str,current->i); if (st) return st; | |
227 | } | |
228 | return adns_s_ok; | |
229 | } | |
230 | ||
231 | /* | |
232 | * _hinfo (cs) | |
233 | */ | |
234 | ||
235 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { | |
236 | const adns_rr_intstrpair *rrp= datap; | |
237 | adns_status st; | |
238 | ||
239 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; | |
240 | CSP_ADDSTR(" "); | |
241 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; | |
242 | return adns_s_ok; | |
243 | } | |
244 | ||
eb81d633 | 245 | /* |
382b81f7 | 246 | * _inaddr (pa,dip,di,cs +search_sortlist) |
eb81d633 | 247 | */ |
248 | ||
609133ee | 249 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, |
250 | int max, void *datap) { | |
e062dcae | 251 | struct in_addr *storeto= datap; |
e7a9ca47 | 252 | |
253 | if (max-cbyte != 4) return adns_s_invaliddata; | |
1dfe95d8 | 254 | memcpy(storeto, pai->dgram + cbyte, 4); |
e7a9ca47 | 255 | return adns_s_ok; |
256 | } | |
257 | ||
09957b1c | 258 | static int search_sortlist(adns_state ads, struct in_addr ad) { |
259 | const struct sortlist *slp; | |
260 | int i; | |
261 | ||
262 | for (i=0, slp=ads->sortlist; | |
609133ee | 263 | i<ads->nsortlist && |
264 | !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr); | |
09957b1c | 265 | i++, slp++); |
266 | return i; | |
eb81d633 | 267 | } |
268 | ||
09957b1c | 269 | static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) { |
270 | int ai, bi; | |
271 | ||
272 | if (!ads->nsortlist) return 0; | |
273 | ||
274 | ai= search_sortlist(ads,a); | |
275 | bi= search_sortlist(ads,b); | |
276 | return bi<ai; | |
277 | } | |
278 | ||
609133ee | 279 | static int di_inaddr(adns_state ads, |
280 | const void *datap_a, const void *datap_b) { | |
e062dcae | 281 | const struct in_addr *ap= datap_a, *bp= datap_b; |
282 | ||
09957b1c | 283 | return dip_inaddr(ads,*ap,*bp); |
e062dcae | 284 | } |
285 | ||
286 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { | |
287 | const struct in_addr *rrp= datap, rr= *rrp; | |
86e7b8d9 | 288 | const char *ia; |
289 | ||
e062dcae | 290 | ia= inet_ntoa(rr); assert(ia); |
1dfe95d8 | 291 | CSP_ADDSTR(ia); |
292 | return adns_s_ok; | |
86e7b8d9 | 293 | } |
e7a9ca47 | 294 | |
eb81d633 | 295 | /* |
b0a32b17 | 296 | * _addr (pa,di,div,csp,cs,gsz) |
eb81d633 | 297 | */ |
298 | ||
609133ee | 299 | static adns_status pa_addr(const parseinfo *pai, int cbyte, |
300 | int max, void *datap) { | |
551ff40f | 301 | adns_rr_addr *storeto= datap; |
1dfe95d8 | 302 | const byte *dgram= pai->dgram; |
c7836bc9 | 303 | |
828d89bd | 304 | if (max-cbyte != 4) return adns_s_invaliddata; |
305 | storeto->len= sizeof(storeto->addr.inet); | |
306 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); | |
307 | storeto->addr.inet.sin_family= AF_INET; | |
828d89bd | 308 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
309 | return adns_s_ok; | |
310 | } | |
311 | ||
09957b1c | 312 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
551ff40f | 313 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
828d89bd | 314 | |
1dfe95d8 | 315 | assert(ap->addr.sa.sa_family == AF_INET); |
09957b1c | 316 | return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr); |
828d89bd | 317 | } |
318 | ||
09957b1c | 319 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
320 | const adns_state ads= context; | |
321 | ||
322 | return di_addr(ads, datap_a, datap_b); | |
323 | } | |
324 | ||
551ff40f | 325 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
828d89bd | 326 | const char *ia; |
47a6797e | 327 | char buf[30]; |
828d89bd | 328 | |
329 | switch (rrp->addr.inet.sin_family) { | |
330 | case AF_INET: | |
b365d68a | 331 | CSP_ADDSTR("INET "); |
828d89bd | 332 | ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia); |
1dfe95d8 | 333 | CSP_ADDSTR(ia); |
828d89bd | 334 | break; |
335 | default: | |
336 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); | |
1dfe95d8 | 337 | CSP_ADDSTR(buf); |
828d89bd | 338 | break; |
339 | } | |
340 | return adns_s_ok; | |
341 | } | |
342 | ||
1dfe95d8 | 343 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
551ff40f | 344 | const adns_rr_addr *rrp= datap; |
1dfe95d8 | 345 | |
346 | return csp_addr(vb,rrp); | |
347 | } | |
348 | ||
b0a32b17 MW |
349 | static int gsz_addr(const typeinfo *typei, adns_rrtype type) { |
350 | return type & adns__qtf_bigaddr ? | |
351 | sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only); | |
352 | } | |
353 | ||
eb81d633 | 354 | /* |
b365d68a | 355 | * _domain (pap,csp,cs) |
356 | * _dom_raw (pa) | |
eb81d633 | 357 | */ |
358 | ||
1dfe95d8 | 359 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
360 | char **domain_r, parsedomain_flags flags) { | |
e062dcae | 361 | adns_status st; |
362 | char *dm; | |
363 | ||
1dfe95d8 | 364 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
365 | pai->dgram,pai->dglen, cbyte_io, max); | |
e062dcae | 366 | if (st) return st; |
1dfe95d8 | 367 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
e062dcae | 368 | |
1dfe95d8 | 369 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
370 | if (!dm) R_NOMEM; | |
e062dcae | 371 | |
1dfe95d8 | 372 | dm[pai->qu->vb.used]= 0; |
373 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); | |
e062dcae | 374 | |
375 | *domain_r= dm; | |
376 | return adns_s_ok; | |
377 | } | |
378 | ||
b365d68a | 379 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
380 | CSP_ADDSTR(domain); | |
381 | if (!*domain) CSP_ADDSTR("."); | |
382 | return adns_s_ok; | |
383 | } | |
384 | ||
385 | static adns_status cs_domain(vbuf *vb, const void *datap) { | |
386 | const char *const *domainp= datap; | |
387 | return csp_domain(vb,*domainp); | |
388 | } | |
389 | ||
609133ee | 390 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, |
391 | int max, void *datap) { | |
b365d68a | 392 | char **rrp= datap; |
393 | adns_status st; | |
394 | ||
395 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); | |
396 | if (st) return st; | |
397 | ||
398 | if (cbyte != max) return adns_s_invaliddata; | |
399 | return adns_s_ok; | |
400 | } | |
401 | ||
eb81d633 | 402 | /* |
403 | * _host_raw (pa) | |
404 | */ | |
405 | ||
609133ee | 406 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, |
407 | int max, void *datap) { | |
e062dcae | 408 | char **rrp= datap; |
ffbda80c | 409 | adns_status st; |
86e7b8d9 | 410 | |
1dfe95d8 | 411 | st= pap_domain(pai, &cbyte, max, rrp, |
412 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
e062dcae | 413 | if (st) return st; |
414 | ||
415 | if (cbyte != max) return adns_s_invaliddata; | |
416 | return adns_s_ok; | |
417 | } | |
ffbda80c | 418 | |
eb81d633 | 419 | /* |
382b81f7 | 420 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs, icb_hostaddr) |
eb81d633 | 421 | */ |
c7836bc9 | 422 | |
1dfe95d8 | 423 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
b0a32b17 | 424 | size_t addrsz, |
1dfe95d8 | 425 | int *cbyte_io, int count, int dmstart) { |
426 | int rri, naddrs; | |
c7836bc9 | 427 | int type, class, rdlen, rdstart, ownermatched; |
73dba56e | 428 | unsigned long ttl; |
1dfe95d8 | 429 | adns_status st; |
c7836bc9 | 430 | |
1dfe95d8 | 431 | for (rri=0, naddrs=-1; rri<count; rri++) { |
609133ee | 432 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, |
433 | pai->dglen, cbyte_io, | |
73dba56e | 434 | &type, &class, &ttl, &rdlen, &rdstart, |
1dfe95d8 | 435 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
c7836bc9 | 436 | if (st) return st; |
1dfe95d8 | 437 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
438 | if (naddrs>0) break; else continue; | |
439 | } | |
440 | if (naddrs == -1) { | |
441 | naddrs= 0; | |
c7836bc9 | 442 | } |
b0a32b17 | 443 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) |
609133ee | 444 | R_NOMEM; |
73dba56e | 445 | adns__update_expires(pai->qu,ttl,pai->now); |
b0a32b17 | 446 | st= pa_addr(pai, rdstart,rdstart+rdlen, pai->qu->vb.buf + naddrs*addrsz); |
c7836bc9 | 447 | if (st) return st; |
1dfe95d8 | 448 | naddrs++; |
c7836bc9 | 449 | } |
1dfe95d8 | 450 | if (naddrs >= 0) { |
b0a32b17 | 451 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*addrsz); |
1dfe95d8 | 452 | if (!ha->addrs) R_NOMEM; |
b0a32b17 | 453 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*addrsz); |
1dfe95d8 | 454 | ha->naddrs= naddrs; |
c7836bc9 | 455 | ha->astatus= adns_s_ok; |
1dfe95d8 | 456 | |
b0a32b17 | 457 | adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf, |
09957b1c | 458 | div_addr, pai->ads); |
c7836bc9 | 459 | } |
460 | return adns_s_ok; | |
461 | } | |
462 | ||
551ff40f | 463 | static void icb_hostaddr(adns_query parent, adns_query child) { |
551ff40f | 464 | adns_answer *cans= child->answer; |
0ea82d76 | 465 | adns_rr_hostaddr *rrp= child->ctx.pinfo.hostaddr; |
4218fb9a | 466 | adns_state ads= parent->ads; |
b365d68a | 467 | adns_status st; |
b0a32b17 | 468 | size_t addrsz= gsz_addr(0, parent->answer->type); |
551ff40f | 469 | |
b365d68a | 470 | st= cans->status; |
471 | rrp->astatus= st; | |
472 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs; | |
551ff40f | 473 | rrp->addrs= cans->rrs.addr; |
b0a32b17 | 474 | adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*addrsz); |
a6536d8b | 475 | |
4218fb9a | 476 | if (parent->children.head) { |
477 | LIST_LINK_TAIL(ads->childw,parent); | |
478 | } else { | |
479 | adns__query_done(parent); | |
480 | } | |
551ff40f | 481 | } |
482 | ||
1dfe95d8 | 483 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
484 | int max, adns_rr_hostaddr *rrp) { | |
c7836bc9 | 485 | adns_status st; |
486 | int dmstart, cbyte; | |
7da21070 | 487 | qcontext ctx; |
488 | int id; | |
489 | adns_query nqu; | |
4b707d8b | 490 | adns_queryflags nflags; |
b0a32b17 | 491 | size_t addrsz= gsz_addr(0, pai->qu->answer->type); |
c7836bc9 | 492 | |
493 | dmstart= cbyte= *cbyte_io; | |
1dfe95d8 | 494 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
495 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
c7836bc9 | 496 | if (st) return st; |
497 | *cbyte_io= cbyte; | |
498 | ||
499 | rrp->astatus= adns_s_ok; | |
500 | rrp->naddrs= -1; | |
501 | rrp->addrs= 0; | |
502 | ||
1dfe95d8 | 503 | cbyte= pai->nsstart; |
c7836bc9 | 504 | |
b0a32b17 | 505 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->nscount, dmstart); |
c7836bc9 | 506 | if (st) return st; |
507 | if (rrp->naddrs != -1) return adns_s_ok; | |
508 | ||
b0a32b17 | 509 | st= pap_findaddrs(pai, rrp,addrsz, &cbyte, pai->arcount, dmstart); |
c7836bc9 | 510 | if (st) return st; |
511 | if (rrp->naddrs != -1) return adns_s_ok; | |
1dfe95d8 | 512 | |
7da21070 | 513 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
514 | pai->dgram, pai->dglen, dmstart, | |
515 | adns_r_addr, adns_qf_quoteok_query); | |
516 | if (st) return st; | |
551ff40f | 517 | |
a6536d8b | 518 | ctx.ext= 0; |
519 | ctx.callback= icb_hostaddr; | |
0ea82d76 MW |
520 | ctx.pinfo.hostaddr= rrp; |
521 | memset(&ctx.tinfo, 0, sizeof(ctx.tinfo)); | |
4b707d8b | 522 | |
523 | nflags= adns_qf_quoteok_query; | |
524 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; | |
525 | ||
7da21070 | 526 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
7f593711 MW |
527 | ((adns_r_addr & adns_rrt_reprmask) | |
528 | (pai->qu->answer->type & ~adns_rrt_reprmask)), | |
660d7d3b | 529 | &pai->qu->vb, id, nflags, pai->now, &ctx); |
7da21070 | 530 | if (st) return st; |
531 | ||
532 | nqu->parent= pai->qu; | |
533 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
1dfe95d8 | 534 | |
535 | return adns_s_ok; | |
c7836bc9 | 536 | } |
537 | ||
609133ee | 538 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, |
539 | int max, void *datap) { | |
1dfe95d8 | 540 | adns_rr_hostaddr *rrp= datap; |
c7836bc9 | 541 | adns_status st; |
c7836bc9 | 542 | |
1dfe95d8 | 543 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
c7836bc9 | 544 | if (st) return st; |
545 | if (cbyte != max) return adns_s_invaliddata; | |
546 | ||
1dfe95d8 | 547 | return adns_s_ok; |
548 | } | |
c7836bc9 | 549 | |
609133ee | 550 | static int dip_hostaddr(adns_state ads, |
551 | const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { | |
1dfe95d8 | 552 | if (ap->astatus != bp->astatus) return ap->astatus; |
553 | if (ap->astatus) return 0; | |
c7836bc9 | 554 | |
1dfe95d8 | 555 | assert(ap->addrs[0].addr.sa.sa_family == AF_INET); |
556 | assert(bp->addrs[0].addr.sa.sa_family == AF_INET); | |
09957b1c | 557 | return dip_inaddr(ads, |
558 | ap->addrs[0].addr.inet.sin_addr, | |
559 | bp->addrs[0].addr.inet.sin_addr); | |
1dfe95d8 | 560 | } |
561 | ||
609133ee | 562 | static int di_hostaddr(adns_state ads, |
563 | const void *datap_a, const void *datap_b) { | |
1dfe95d8 | 564 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
565 | ||
09957b1c | 566 | return dip_hostaddr(ads, ap,bp); |
c7836bc9 | 567 | } |
568 | ||
eb81d633 | 569 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
570 | void *tablev; | |
b0a32b17 | 571 | size_t addrsz= gsz_addr(0, qu->answer->type); |
e062dcae | 572 | |
eb81d633 | 573 | adns__makefinal_str(qu,&rrp->host); |
574 | tablev= rrp->addrs; | |
b0a32b17 | 575 | adns__makefinal_block(qu, &tablev, rrp->naddrs*addrsz); |
eb81d633 | 576 | rrp->addrs= tablev; |
e062dcae | 577 | } |
578 | ||
eb81d633 | 579 | static void mf_hostaddr(adns_query qu, void *datap) { |
580 | adns_rr_hostaddr *rrp= datap; | |
e062dcae | 581 | |
eb81d633 | 582 | mfp_hostaddr(qu,rrp); |
e062dcae | 583 | } |
584 | ||
1dfe95d8 | 585 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
a6f1dc92 | 586 | const char *errstr; |
1dfe95d8 | 587 | adns_status st; |
ac77ffc1 | 588 | char buf[20]; |
1dfe95d8 | 589 | int i; |
590 | ||
a6f1dc92 | 591 | st= csp_domain(vb,rrp->host); if (st) return st; |
1dfe95d8 | 592 | |
b365d68a | 593 | CSP_ADDSTR(" "); |
ac77ffc1 | 594 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
595 | ||
596 | sprintf(buf," %d ",rrp->astatus); | |
597 | CSP_ADDSTR(buf); | |
a6f1dc92 | 598 | |
ac77ffc1 | 599 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
a6f1dc92 | 600 | CSP_ADDSTR(" "); |
ac77ffc1 | 601 | |
a6f1dc92 | 602 | errstr= adns_strerror(rrp->astatus); |
603 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; | |
b365d68a | 604 | |
605 | if (rrp->naddrs >= 0) { | |
606 | CSP_ADDSTR(" ("); | |
607 | for (i=0; i<rrp->naddrs; i++) { | |
608 | CSP_ADDSTR(" "); | |
1dfe95d8 | 609 | st= csp_addr(vb,&rrp->addrs[i]); |
610 | } | |
b365d68a | 611 | CSP_ADDSTR(" )"); |
612 | } else { | |
613 | CSP_ADDSTR(" ?"); | |
1dfe95d8 | 614 | } |
615 | return adns_s_ok; | |
616 | } | |
617 | ||
618 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { | |
619 | const adns_rr_hostaddr *rrp= datap; | |
620 | ||
621 | return csp_hostaddr(vb,rrp); | |
622 | } | |
623 | ||
eb81d633 | 624 | /* |
625 | * _mx_raw (pa,di) | |
626 | */ | |
1dfe95d8 | 627 | |
609133ee | 628 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, |
629 | int max, void *datap) { | |
eb81d633 | 630 | const byte *dgram= pai->dgram; |
631 | adns_rr_intstr *rrp= datap; | |
632 | adns_status st; | |
633 | int pref; | |
1dfe95d8 | 634 | |
eb81d633 | 635 | if (cbyte+2 > max) return adns_s_invaliddata; |
636 | GET_W(cbyte,pref); | |
637 | rrp->i= pref; | |
638 | st= pap_domain(pai, &cbyte, max, &rrp->str, | |
639 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
640 | if (st) return st; | |
1dfe95d8 | 641 | |
eb81d633 | 642 | if (cbyte != max) return adns_s_invaliddata; |
643 | return adns_s_ok; | |
644 | } | |
1dfe95d8 | 645 | |
09957b1c | 646 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 647 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
648 | ||
649 | if (ap->i < bp->i) return 0; | |
650 | if (ap->i > bp->i) return 1; | |
651 | return 0; | |
1dfe95d8 | 652 | } |
653 | ||
eb81d633 | 654 | /* |
655 | * _mx (pa,di) | |
656 | */ | |
1dfe95d8 | 657 | |
609133ee | 658 | static adns_status pa_mx(const parseinfo *pai, int cbyte, |
659 | int max, void *datap) { | |
eb81d633 | 660 | const byte *dgram= pai->dgram; |
661 | adns_rr_inthostaddr *rrp= datap; | |
662 | adns_status st; | |
663 | int pref; | |
664 | ||
665 | if (cbyte+2 > max) return adns_s_invaliddata; | |
666 | GET_W(cbyte,pref); | |
667 | rrp->i= pref; | |
668 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); | |
669 | if (st) return st; | |
670 | ||
671 | if (cbyte != max) return adns_s_invaliddata; | |
672 | return adns_s_ok; | |
673 | } | |
674 | ||
09957b1c | 675 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 676 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
677 | ||
678 | if (ap->i < bp->i) return 0; | |
679 | if (ap->i > bp->i) return 1; | |
09957b1c | 680 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
1dfe95d8 | 681 | } |
682 | ||
eb81d633 | 683 | /* |
684 | * _inthostaddr (mf,cs) | |
685 | */ | |
686 | ||
1dfe95d8 | 687 | static void mf_inthostaddr(adns_query qu, void *datap) { |
688 | adns_rr_inthostaddr *rrp= datap; | |
689 | ||
690 | mfp_hostaddr(qu,&rrp->ha); | |
691 | } | |
692 | ||
eb81d633 | 693 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
694 | const adns_rr_inthostaddr *rrp= datap; | |
695 | char buf[10]; | |
e062dcae | 696 | |
eb81d633 | 697 | sprintf(buf,"%u ",rrp->i); |
698 | CSP_ADDSTR(buf); | |
699 | ||
700 | return csp_hostaddr(vb,&rrp->ha); | |
ffbda80c | 701 | } |
702 | ||
eb81d633 | 703 | /* |
b365d68a | 704 | * _inthost (cs) |
705 | */ | |
706 | ||
707 | static adns_status cs_inthost(vbuf *vb, const void *datap) { | |
708 | const adns_rr_intstr *rrp= datap; | |
709 | char buf[10]; | |
710 | ||
711 | sprintf(buf,"%u ",rrp->i); | |
712 | CSP_ADDSTR(buf); | |
713 | return csp_domain(vb,rrp->str); | |
714 | } | |
715 | ||
716 | /* | |
938b0228 | 717 | * _ptr (ckl,pa +icb_ptr) |
a6536d8b | 718 | */ |
719 | ||
938b0228 MW |
720 | static adns_status ckl_ptr(adns_state ads, adns_queryflags flags, |
721 | union checklabel_state *cls, qcontext *ctx, | |
722 | int labnum, const char *label, int lablen) { | |
723 | static const char *const (expectdomain[])= { DNS_INADDR_ARPA }; | |
938b0228 MW |
724 | char *ep; |
725 | const char *ed; | |
726 | char labbuf[4]; | |
727 | int l; | |
728 | ||
729 | if (labnum < 4) { | |
730 | if (lablen<=0 || lablen>3) return adns_s_querydomainwrong; | |
731 | memcpy(labbuf, label, lablen); | |
732 | labbuf[lablen]= 0; | |
733 | cls->ptr.ipv[3-labnum]= strtoul(labbuf,&ep,10); | |
734 | if (*ep) return adns_s_querydomainwrong; | |
735 | if (lablen>1 && *label=='0') return adns_s_querydomainwrong; | |
736 | } else if (labnum < 4 + sizeof(expectdomain)/sizeof(*expectdomain)) { | |
737 | ed= expectdomain[labnum-4]; | |
738 | l= strlen(ed); | |
739 | if (lablen != l || memcmp(label, ed, l)) return adns_s_querydomainwrong; | |
740 | } else { | |
741 | if (lablen) return adns_s_querydomainwrong; | |
ac5a2748 | 742 | ctx->tinfo.ptr.addr.s_addr= |
938b0228 MW |
743 | htonl((cls->ptr.ipv[0]<<24) | (cls->ptr.ipv[1]<<16) | |
744 | (cls->ptr.ipv[2]<< 8) | (cls->ptr.ipv[3])); | |
745 | } | |
746 | return adns_s_ok; | |
747 | } | |
748 | ||
a6536d8b | 749 | static void icb_ptr(adns_query parent, adns_query child) { |
750 | adns_answer *cans= child->answer; | |
ac5a2748 MW |
751 | const struct in_addr *queried; |
752 | const unsigned char *found; | |
4218fb9a | 753 | adns_state ads= parent->ads; |
a6536d8b | 754 | int i; |
755 | ||
756 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { | |
757 | adns__query_fail(parent,adns_s_inconsistent); | |
758 | return; | |
759 | } else if (cans->status) { | |
760 | adns__query_fail(parent,cans->status); | |
761 | return; | |
762 | } | |
763 | ||
ac5a2748 MW |
764 | queried= &parent->ctx.tinfo.ptr.addr; |
765 | for (i=0, found=cans->rrs.bytes; i<cans->nrrs; i++, found+=cans->rrsz) { | |
766 | if (!memcmp(queried,found,cans->rrsz)) { | |
4218fb9a | 767 | if (!parent->children.head) { |
768 | adns__query_done(parent); | |
769 | return; | |
770 | } else { | |
771 | LIST_LINK_TAIL(ads->childw,parent); | |
772 | return; | |
773 | } | |
a6536d8b | 774 | } |
775 | } | |
776 | ||
777 | adns__query_fail(parent,adns_s_inconsistent); | |
778 | } | |
779 | ||
609133ee | 780 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, |
781 | int max, void *datap) { | |
a6536d8b | 782 | char **rrp= datap; |
783 | adns_status st; | |
938b0228 | 784 | int cbyte, id; |
a6536d8b | 785 | adns_query nqu; |
786 | qcontext ctx; | |
787 | ||
788 | cbyte= dmstart; | |
789 | st= pap_domain(pai, &cbyte, max, rrp, | |
790 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
791 | if (st) return st; | |
792 | if (cbyte != max) return adns_s_invaliddata; | |
793 | ||
a6536d8b | 794 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
795 | pai->dgram, pai->dglen, dmstart, | |
ac5a2748 | 796 | adns_r_a, adns_qf_quoteok_query); |
a6536d8b | 797 | if (st) return st; |
798 | ||
799 | ctx.ext= 0; | |
800 | ctx.callback= icb_ptr; | |
0ea82d76 MW |
801 | memset(&ctx.pinfo,0,sizeof(ctx.pinfo)); |
802 | memset(&ctx.tinfo,0,sizeof(ctx.tinfo)); | |
ac5a2748 | 803 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_a), |
7f593711 MW |
804 | adns_r_a, &pai->qu->vb, id, adns_qf_quoteok_query, |
805 | pai->now, &ctx); | |
a6536d8b | 806 | if (st) return st; |
807 | ||
808 | nqu->parent= pai->qu; | |
809 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); | |
a6536d8b | 810 | return adns_s_ok; |
811 | } | |
812 | ||
813 | /* | |
b365d68a | 814 | * _strpair (mf) |
9ec44266 | 815 | */ |
816 | ||
817 | static void mf_strpair(adns_query qu, void *datap) { | |
818 | adns_rr_strpair *rrp= datap; | |
819 | ||
820 | adns__makefinal_str(qu,&rrp->array[0]); | |
821 | adns__makefinal_str(qu,&rrp->array[1]); | |
822 | } | |
823 | ||
9ec44266 | 824 | /* |
b365d68a | 825 | * _intstrpair (mf) |
9ec44266 | 826 | */ |
827 | ||
828 | static void mf_intstrpair(adns_query qu, void *datap) { | |
829 | adns_rr_intstrpair *rrp= datap; | |
830 | ||
831 | adns__makefinal_str(qu,&rrp->array[0].str); | |
832 | adns__makefinal_str(qu,&rrp->array[1].str); | |
833 | } | |
834 | ||
9ec44266 | 835 | /* |
836 | * _hinfo (pa) | |
837 | */ | |
838 | ||
609133ee | 839 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, |
840 | int max, void *datap) { | |
9ec44266 | 841 | adns_rr_intstrpair *rrp= datap; |
842 | adns_status st; | |
843 | int i; | |
844 | ||
845 | for (i=0; i<2; i++) { | |
b365d68a | 846 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
9ec44266 | 847 | if (st) return st; |
848 | } | |
849 | ||
850 | if (cbyte != max) return adns_s_invaliddata; | |
851 | ||
852 | return adns_s_ok; | |
853 | } | |
854 | ||
855 | /* | |
382b81f7 | 856 | * _mailbox (pap,cs +pap_mailbox822) |
9ec44266 | 857 | */ |
858 | ||
609133ee | 859 | static adns_status pap_mailbox822(const parseinfo *pai, |
860 | int *cbyte_io, int max, char **mb_r) { | |
eaa44731 | 861 | int lablen, labstart, i, needquote, c, r, neednorm; |
862 | const unsigned char *p; | |
863 | char *str; | |
864 | findlabel_state fls; | |
865 | adns_status st; | |
866 | vbuf *vb; | |
867 | ||
868 | vb= &pai->qu->vb; | |
869 | vb->used= 0; | |
870 | adns__findlabel_start(&fls, pai->ads, | |
871 | -1, pai->qu, | |
872 | pai->dgram, pai->dglen, max, | |
873 | *cbyte_io, cbyte_io); | |
874 | st= adns__findlabel_next(&fls,&lablen,&labstart); | |
875 | if (!lablen) { | |
b365d68a | 876 | adns__vbuf_appendstr(vb,"."); |
eaa44731 | 877 | goto x_ok; |
878 | } | |
879 | ||
880 | neednorm= 1; | |
881 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { | |
882 | c= *p++; | |
883 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; | |
884 | if (c == '.' && !neednorm) neednorm= 1; | |
7672a872 | 885 | else if (c==' ' || c>=127 || ctype_822special(c)) needquote++; |
eaa44731 | 886 | else neednorm= 0; |
887 | } | |
888 | ||
889 | if (needquote || neednorm) { | |
890 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; | |
891 | adns__vbuf_appendq(vb,"\"",1); | |
892 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { | |
893 | c= *p; | |
b365d68a | 894 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
eaa44731 | 895 | adns__vbuf_appendq(vb,p,1); |
896 | } | |
897 | adns__vbuf_appendq(vb,"\"",1); | |
898 | } else { | |
899 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; | |
900 | } | |
901 | ||
902 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; | |
903 | ||
904 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); | |
905 | if (st) return st; | |
906 | ||
907 | x_ok: | |
908 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; | |
909 | memcpy(str,vb->buf,vb->used); | |
910 | str[vb->used]= 0; | |
911 | *mb_r= str; | |
912 | return adns_s_ok; | |
9ec44266 | 913 | } |
914 | ||
9da4a044 | 915 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
916 | char **mb_r) { | |
2c6eb096 | 917 | if (pai->qu->typei->typekey & adns__qtf_mail822) { |
9da4a044 | 918 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
919 | } else { | |
b365d68a | 920 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
9da4a044 | 921 | } |
922 | } | |
923 | ||
b365d68a | 924 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
925 | return csp_domain(vb,mailbox); | |
926 | } | |
927 | ||
9ec44266 | 928 | /* |
b365d68a | 929 | * _rp (pa,cs) |
9ec44266 | 930 | */ |
931 | ||
609133ee | 932 | static adns_status pa_rp(const parseinfo *pai, int cbyte, |
933 | int max, void *datap) { | |
9ec44266 | 934 | adns_rr_strpair *rrp= datap; |
935 | adns_status st; | |
936 | ||
937 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); | |
938 | if (st) return st; | |
939 | ||
940 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); | |
941 | if (st) return st; | |
942 | ||
943 | if (cbyte != max) return adns_s_invaliddata; | |
944 | return adns_s_ok; | |
945 | } | |
946 | ||
b365d68a | 947 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
948 | const adns_rr_strpair *rrp= datap; | |
949 | adns_status st; | |
950 | ||
951 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; | |
952 | CSP_ADDSTR(" "); | |
953 | st= csp_domain(vb,rrp->array[1]); if (st) return st; | |
954 | ||
955 | return adns_s_ok; | |
956 | } | |
957 | ||
9ec44266 | 958 | /* |
959 | * _soa (pa,mf,cs) | |
960 | */ | |
961 | ||
609133ee | 962 | static adns_status pa_soa(const parseinfo *pai, int cbyte, |
963 | int max, void *datap) { | |
9ec44266 | 964 | adns_rr_soa *rrp= datap; |
965 | const byte *dgram= pai->dgram; | |
966 | adns_status st; | |
967 | int msw, lsw, i; | |
968 | ||
969 | st= pap_domain(pai, &cbyte, max, &rrp->mname, | |
970 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
971 | if (st) return st; | |
972 | ||
973 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); | |
974 | if (st) return st; | |
975 | ||
976 | if (cbyte+20 != max) return adns_s_invaliddata; | |
977 | ||
978 | for (i=0; i<5; i++) { | |
979 | GET_W(cbyte,msw); | |
980 | GET_W(cbyte,lsw); | |
981 | (&rrp->serial)[i]= (msw<<16) | lsw; | |
982 | } | |
983 | ||
984 | return adns_s_ok; | |
985 | } | |
986 | ||
987 | static void mf_soa(adns_query qu, void *datap) { | |
988 | adns_rr_soa *rrp= datap; | |
989 | ||
990 | adns__makefinal_str(qu,&rrp->mname); | |
991 | adns__makefinal_str(qu,&rrp->rname); | |
992 | } | |
993 | ||
994 | static adns_status cs_soa(vbuf *vb, const void *datap) { | |
995 | const adns_rr_soa *rrp= datap; | |
996 | char buf[20]; | |
997 | int i; | |
998 | adns_status st; | |
999 | ||
b365d68a | 1000 | st= csp_domain(vb,rrp->mname); if (st) return st; |
9ec44266 | 1001 | CSP_ADDSTR(" "); |
b365d68a | 1002 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
9ec44266 | 1003 | |
1004 | for (i=0; i<5; i++) { | |
1005 | sprintf(buf," %lu",(&rrp->serial)[i]); | |
1006 | CSP_ADDSTR(buf); | |
1007 | } | |
1008 | ||
1009 | return adns_s_ok; | |
1010 | } | |
1011 | ||
1012 | /* | |
e8e5aeac | 1013 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
d19b03d0 | 1014 | */ |
1015 | ||
e8e5aeac MW |
1016 | static adns_status ckl_srv(adns_state ads, adns_queryflags flags, |
1017 | union checklabel_state *cls, qcontext *ctx, | |
1018 | int labnum, const char *label, int lablen) { | |
1019 | if (labnum < 2 && !(flags & adns_qf_quoteok_query)) { | |
1020 | if (!lablen || label[0] != '_') return adns_s_querydomaininvalid; | |
1021 | return adns_s_ok; | |
d19b03d0 | 1022 | } |
e8e5aeac | 1023 | return adns__ckl_hostname(ads, flags, cls, ctx, labnum, label, lablen); |
d19b03d0 | 1024 | } |
1025 | ||
05fc6b3a | 1026 | static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max, |
0e45654b | 1027 | adns_rr_srvha *rrp |
1028 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1029 | const byte *dgram= pai->dgram; |
05fc6b3a | 1030 | int ti, cbyte; |
1031 | ||
1032 | cbyte= *cbyte_io; | |
1033 | if ((*cbyte_io += 6) > max) return adns_s_invaliddata; | |
401c256a | 1034 | |
1035 | rrp->priority= GET_W(cbyte, ti); | |
1036 | rrp->weight= GET_W(cbyte, ti); | |
1037 | rrp->port= GET_W(cbyte, ti); | |
1038 | return adns_s_ok; | |
1039 | } | |
1040 | ||
1041 | static adns_status pa_srvraw(const parseinfo *pai, int cbyte, | |
1042 | int max, void *datap) { | |
1043 | adns_rr_srvraw *rrp= datap; | |
1044 | adns_status st; | |
1045 | ||
05fc6b3a | 1046 | st= pap_srv_begin(pai,&cbyte,max,datap); |
401c256a | 1047 | if (st) return st; |
1048 | ||
1049 | st= pap_domain(pai, &cbyte, max, &rrp->host, | |
1050 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1051 | if (st) return st; | |
1052 | ||
1053 | if (cbyte != max) return adns_s_invaliddata; | |
1054 | return adns_s_ok; | |
1055 | } | |
1056 | ||
1057 | static adns_status pa_srvha(const parseinfo *pai, int cbyte, | |
1058 | int max, void *datap) { | |
1059 | adns_rr_srvha *rrp= datap; | |
1060 | adns_status st; | |
1061 | ||
05fc6b3a | 1062 | st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st; |
401c256a | 1063 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st; |
1064 | if (cbyte != max) return adns_s_invaliddata; | |
1065 | return adns_s_ok; | |
1066 | } | |
1067 | ||
1068 | static void mf_srvraw(adns_query qu, void *datap) { | |
1069 | adns_rr_srvraw *rrp= datap; | |
1070 | adns__makefinal_str(qu, &rrp->host); | |
1071 | } | |
1072 | ||
1073 | static void mf_srvha(adns_query qu, void *datap) { | |
1074 | adns_rr_srvha *rrp= datap; | |
1075 | mfp_hostaddr(qu,&rrp->ha); | |
1076 | } | |
1077 | ||
1078 | static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) { | |
1079 | const adns_rr_srvraw *ap= datap_a, *bp= datap_b; | |
1080 | /* might be const adns_rr_svhostaddr* */ | |
1081 | ||
1082 | if (ap->priority < bp->priority) return 0; | |
1083 | if (ap->priority > bp->priority) return 1; | |
1084 | return 0; | |
1085 | } | |
1086 | ||
0e45654b | 1087 | static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp |
1088 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1089 | char buf[30]; |
1090 | sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port); | |
1091 | CSP_ADDSTR(buf); | |
1092 | return adns_s_ok; | |
1093 | } | |
1094 | ||
1095 | static adns_status cs_srvraw(vbuf *vb, const void *datap) { | |
1096 | const adns_rr_srvraw *rrp= datap; | |
1097 | adns_status st; | |
1098 | ||
0e45654b | 1099 | st= csp_srv_begin(vb,(const void*)rrp); if (st) return st; |
401c256a | 1100 | return csp_domain(vb,rrp->host); |
1101 | } | |
1102 | ||
1103 | static adns_status cs_srvha(vbuf *vb, const void *datap) { | |
1104 | const adns_rr_srvha *rrp= datap; | |
1105 | adns_status st; | |
1106 | ||
0e45654b | 1107 | st= csp_srv_begin(vb,(const void*)datap); if (st) return st; |
401c256a | 1108 | return csp_hostaddr(vb,&rrp->ha); |
1109 | } | |
1110 | ||
042b0909 | 1111 | static void postsort_srv(adns_state ads, void *array, int nrrs,int rrsz, |
d24e2a7e | 1112 | const struct typeinfo *typei) { |
0e45654b | 1113 | /* we treat everything in the array as if it were an adns_rr_srvha |
1114 | * even though the array might be of adns_rr_srvraw. That's OK | |
1115 | * because they have the same prefix, which is all we access. | |
042b0909 | 1116 | * We use rrsz, too, rather than naive array indexing, of course. |
0e45654b | 1117 | */ |
1118 | char *workbegin, *workend, *search, *arrayend; | |
1119 | const adns_rr_srvha *rr; | |
1120 | union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp; | |
1121 | int cpriority, totalweight, runtotal; | |
1122 | long randval; | |
1123 | ||
042b0909 MW |
1124 | assert(rrsz <= sizeof(rrtmp)); |
1125 | for (workbegin= array, arrayend= workbegin + rrsz * nrrs; | |
0e45654b | 1126 | workbegin < arrayend; |
1127 | workbegin= workend) { | |
1128 | cpriority= (rr=(void*)workbegin)->priority; | |
1129 | ||
1130 | for (workend= workbegin, totalweight= 0; | |
1131 | workend < arrayend && (rr=(void*)workend)->priority == cpriority; | |
042b0909 | 1132 | workend += rrsz) { |
0e45654b | 1133 | totalweight += rr->weight; |
0e45654b | 1134 | } |
1135 | ||
1136 | /* Now workbegin..(workend-1) incl. are exactly all of the RRs of | |
1137 | * cpriority. From now on, workbegin points to the `remaining' | |
1138 | * records: we select one record at a time (RFC2782 `Usage rules' | |
1139 | * and `Format of the SRV RR' subsection `Weight') to place at | |
1140 | * workbegin (swapping with the one that was there, and then | |
1141 | * advance workbegin. */ | |
1142 | for (; | |
042b0909 MW |
1143 | workbegin + rrsz < workend; /* don't bother if just one */ |
1144 | workbegin += rrsz) { | |
0e45654b | 1145 | |
1146 | randval= nrand48(ads->rand48xsubi); | |
1147 | randval %= (totalweight + 1); | |
0e45654b | 1148 | /* makes it into 0..totalweight inclusive; with 2^10 RRs, |
1149 | * totalweight must be <= 2^26 so probability nonuniformity is | |
1150 | * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie | |
1151 | * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5). | |
1152 | */ | |
1153 | ||
1154 | for (search=workbegin, runtotal=0; | |
1155 | (runtotal += (rr=(void*)search)->weight) < randval; | |
042b0909 | 1156 | search += rrsz); |
0e45654b | 1157 | assert(search < arrayend); |
1158 | totalweight -= rr->weight; | |
1159 | if (search != workbegin) { | |
042b0909 MW |
1160 | memcpy(&rrtmp, workbegin, rrsz); |
1161 | memcpy(workbegin, search, rrsz); | |
1162 | memcpy(search, &rrtmp, rrsz); | |
0e45654b | 1163 | } |
1164 | } | |
1165 | } | |
d24e2a7e | 1166 | /* tests: |
1167 | * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. | |
1168 | * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk. | |
1169 | * ./adnshost_s -t srv- _jabber._tcp.jabber.org | |
1170 | */ | |
1171 | } | |
1172 | ||
d19b03d0 | 1173 | /* |
2c6eb096 | 1174 | * _byteblock (mf) |
1175 | */ | |
1176 | ||
1177 | static void mf_byteblock(adns_query qu, void *datap) { | |
1178 | adns_rr_byteblock *rrp= datap; | |
1179 | void *bytes= rrp->data; | |
1180 | adns__makefinal_block(qu,&bytes,rrp->len); | |
1181 | rrp->data= bytes; | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * _opaque (pa,cs) | |
1186 | */ | |
1187 | ||
1188 | static adns_status pa_opaque(const parseinfo *pai, int cbyte, | |
1189 | int max, void *datap) { | |
1190 | adns_rr_byteblock *rrp= datap; | |
1191 | ||
1192 | rrp->len= max - cbyte; | |
1193 | rrp->data= adns__alloc_interim(pai->qu, rrp->len); | |
1194 | if (!rrp->data) R_NOMEM; | |
1195 | memcpy(rrp->data, pai->dgram + cbyte, rrp->len); | |
1196 | return adns_s_ok; | |
1197 | } | |
1198 | ||
1199 | static adns_status cs_opaque(vbuf *vb, const void *datap) { | |
1200 | const adns_rr_byteblock *rrp= datap; | |
1201 | char buf[10]; | |
1202 | int l; | |
1203 | unsigned char *p; | |
1204 | ||
1205 | sprintf(buf,"\\# %d",rrp->len); | |
1206 | CSP_ADDSTR(buf); | |
1207 | ||
1208 | for (l= rrp->len, p= rrp->data; | |
1209 | l>=4; | |
1210 | l -= 4, p += 4) { | |
1211 | sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]); | |
1212 | CSP_ADDSTR(buf); | |
1213 | } | |
1214 | for (; | |
1215 | l>0; | |
1216 | l--, p++) { | |
1217 | sprintf(buf," %02x",*p); | |
1218 | CSP_ADDSTR(buf); | |
1219 | } | |
1220 | return adns_s_ok; | |
1221 | } | |
1222 | ||
1223 | /* | |
eb81d633 | 1224 | * _flat (mf) |
1225 | */ | |
1226 | ||
ffbda80c | 1227 | static void mf_flat(adns_query qu, void *data) { } |
1228 | ||
eb81d633 | 1229 | /* |
1230 | * Now the table. | |
1231 | */ | |
1232 | ||
e062dcae | 1233 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
86e7b8d9 | 1234 | |
c5fd1fbb | 1235 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1236 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ |
c5fd1fbb | 1237 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
042b0909 | 1238 | adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) } |
c5fd1fbb | 1239 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1240 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_flat, \ |
c5fd1fbb | 1241 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
042b0909 | 1242 | adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) } |
c5fd1fbb MW |
1243 | |
1244 | #define di_0 0 | |
98a3f706 | 1245 | |
1246 | static const typeinfo typeinfos[] = { | |
eb81d633 | 1247 | /* Must be in ascending order of rrtype ! */ |
609133ee | 1248 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1249 | ||
c5fd1fbb MW |
1250 | FLAT_TYPE(a, "A", 0, inaddr, inaddr, inaddr,inaddr ), |
1251 | DEEP_TYPE(ns_raw, "NS", "raw",str, host_raw,0, domain ), | |
1252 | DEEP_TYPE(cname, "CNAME", 0, str, dom_raw, 0, domain ), | |
1253 | DEEP_TYPE(soa_raw,"SOA", "raw",soa, soa, 0, soa ), | |
1254 | DEEP_TYPE(ptr_raw,"PTR", "raw",str, host_raw,0, domain ), | |
1255 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,hinfo, 0, hinfo ), | |
1256 | DEEP_TYPE(mx_raw, "MX", "raw",intstr, mx_raw, mx_raw,inthost ), | |
1257 | DEEP_TYPE(txt, "TXT", 0, manyistr, txt, 0, txt ), | |
1258 | DEEP_TYPE(rp_raw, "RP", "raw",strpair, rp, 0, rp ), | |
1259 | DEEP_TYPE(srv_raw,"SRV", "raw",srvraw , srvraw, srv, srvraw, | |
e8e5aeac | 1260 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb | 1261 | |
b0a32b17 MW |
1262 | FLAT_TYPE(addr, "A", "addr", addr, addr, addr, addr, |
1263 | .getrrsz= gsz_addr), | |
c5fd1fbb | 1264 | DEEP_TYPE(ns, "NS", "+addr",hostaddr, hostaddr,hostaddr,hostaddr ), |
938b0228 MW |
1265 | DEEP_TYPE(ptr, "PTR","checked",str, ptr, 0, domain, |
1266 | .checklabel= ckl_ptr), | |
c5fd1fbb MW |
1267 | DEEP_TYPE(mx, "MX", "+addr",inthostaddr,mx, mx, inthostaddr, ), |
1268 | DEEP_TYPE(srv, "SRV","+addr",srvha, srvha, srv, srvha, | |
e8e5aeac | 1269 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb MW |
1270 | |
1271 | DEEP_TYPE(soa, "SOA","822", soa, soa, 0, soa ), | |
1272 | DEEP_TYPE(rp, "RP", "822", strpair, rp, 0, rp ), | |
98a3f706 | 1273 | }; |
1274 | ||
2c6eb096 | 1275 | static const typeinfo typeinfo_unknown= |
c5fd1fbb | 1276 | DEEP_TYPE(unknown,0, "unknown",byteblock,opaque, 0, opaque ); |
2c6eb096 | 1277 | |
f759e52e | 1278 | const typeinfo *adns__findtype(adns_rrtype type) { |
1279 | const typeinfo *begin, *end, *mid; | |
98a3f706 | 1280 | |
2c6eb096 | 1281 | if (type & adns_r_unknown) return &typeinfo_unknown; |
d24b603f | 1282 | type &= adns_rrt_reprmask; |
2c6eb096 | 1283 | |
98a3f706 | 1284 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1285 | ||
1286 | while (begin < end) { | |
1287 | mid= begin + ((end-begin)>>1); | |
2c6eb096 | 1288 | if (mid->typekey == type) return mid; |
1289 | if (type > mid->typekey) begin= mid+1; | |
98a3f706 | 1290 | else end= mid; |
1291 | } | |
1292 | return 0; | |
1293 | } |