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