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 | |
8a8511e2 | 27 | #include <stddef.h> |
1b644113 | 28 | #include <stdlib.h> |
29 | ||
0f091044 | 30 | #include <sys/types.h> |
71a6ff46 | 31 | #include <sys/socket.h> |
32 | #include <netinet/in.h> | |
86e7b8d9 | 33 | #include <arpa/inet.h> |
34 | ||
98a3f706 | 35 | #include "internal.h" |
36 | ||
609133ee | 37 | #define R_NOMEM return adns_s_nomemory |
38 | #define CSP_ADDSTR(s) do { \ | |
39 | if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; \ | |
40 | } while (0) | |
1dfe95d8 | 41 | |
eb81d633 | 42 | /* |
43 | * order of sections: | |
44 | * | |
9ec44266 | 45 | * _string (pap) |
eb81d633 | 46 | * _textdata, _qstring (csp) |
47 | * _str (mf,cs) | |
9ec44266 | 48 | * _intstr (mf,csp,cs) |
eb81d633 | 49 | * _manyistr (mf,cs) |
50 | * _txt (pa) | |
c91e3ed3 MW |
51 | * _inaddr (pa,di,cs |
52 | * +search_sortlist, dip_genaddr, csp_genaddr) | |
eeee7503 | 53 | * _in6addr (pa,di,cs) |
8a8511e2 | 54 | * _addr (pap,pa,di,div,csp,cs,gsz,qs |
b5e689a3 MW |
55 | * +search_sortlist_sa, dip_sockaddr, |
56 | * addr_rrtypes, addr_submit, icb_addr) | |
382b81f7 MW |
57 | * _domain (pap,csp,cs) |
58 | * _dom_raw (pa) | |
eb81d633 | 59 | * _host_raw (pa) |
382b81f7 MW |
60 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs |
61 | * +pap_findaddrs, icb_hostaddr) | |
eb81d633 | 62 | * _mx_raw (pa,di) |
63 | * _mx (pa,di) | |
64 | * _inthostaddr (mf,cs) | |
382b81f7 | 65 | * _inthost (cs) |
938b0228 | 66 | * _ptr (ckl,pa +icb_ptr) |
382b81f7 MW |
67 | * _strpair (mf) |
68 | * _intstrpair (mf) | |
9ec44266 | 69 | * _hinfo (pa) |
382b81f7 MW |
70 | * _mailbox (pap,csp +pap_mailbox822) |
71 | * _rp (pa,cs) | |
9ec44266 | 72 | * _soa (pa,mf,cs) |
e8e5aeac | 73 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
2c6eb096 | 74 | * _byteblock (mf) |
75 | * _opaque (pa,cs) | |
eb81d633 | 76 | * _flat (mf) |
77 | * | |
78 | * within each section: | |
e8e5aeac | 79 | * ckl_* |
eb81d633 | 80 | * pap_* |
81 | * pa_* | |
82 | * dip_* | |
83 | * di_* | |
84 | * mfp_* | |
85 | * mf_* | |
86 | * csp_* | |
87 | * cs_* | |
b0a32b17 | 88 | * gsz_* |
d24e2a7e | 89 | * postsort_* |
a586770a | 90 | * qs_* |
eb81d633 | 91 | */ |
92 | ||
93 | /* | |
b365d68a | 94 | * _qstring (pap,csp) |
eb81d633 | 95 | */ |
96 | ||
b365d68a | 97 | static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max, |
9ec44266 | 98 | int *len_r, char **str_r) { |
99 | /* Neither len_r nor str_r may be null. | |
100 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; | |
101 | */ | |
102 | const byte *dgram= pai->dgram; | |
103 | int l, cbyte; | |
104 | char *str; | |
105 | ||
106 | cbyte= *cbyte_io; | |
107 | ||
108 | if (cbyte >= max) return adns_s_invaliddata; | |
109 | GET_B(cbyte,l); | |
110 | if (cbyte+l > max) return adns_s_invaliddata; | |
111 | ||
112 | str= adns__alloc_interim(pai->qu, l+1); | |
113 | if (!str) R_NOMEM; | |
114 | ||
115 | str[l]= 0; | |
116 | memcpy(str,dgram+cbyte,l); | |
117 | ||
118 | *len_r= l; | |
119 | *str_r= str; | |
120 | *cbyte_io= cbyte+l; | |
121 | ||
122 | return adns_s_ok; | |
123 | } | |
124 | ||
b365d68a | 125 | static adns_status csp_qstring(vbuf *vb, const char *dp, int len) { |
eb81d633 | 126 | unsigned char ch; |
127 | char buf[10]; | |
128 | int cn; | |
129 | ||
130 | CSP_ADDSTR("\""); | |
131 | for (cn=0; cn<len; cn++) { | |
132 | ch= *dp++; | |
b365d68a | 133 | if (ch == '\\') { |
9ec44266 | 134 | CSP_ADDSTR("\\\\"); |
b365d68a | 135 | } else if (ch == '"') { |
136 | CSP_ADDSTR("\\\""); | |
137 | } else if (ch >= 32 && ch <= 126) { | |
138 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; | |
eb81d633 | 139 | } else { |
9ec44266 | 140 | sprintf(buf,"\\x%02x",ch); |
eb81d633 | 141 | CSP_ADDSTR(buf); |
142 | } | |
143 | } | |
144 | CSP_ADDSTR("\""); | |
145 | ||
146 | return adns_s_ok; | |
147 | } | |
148 | ||
eb81d633 | 149 | /* |
b365d68a | 150 | * _str (mf) |
eb81d633 | 151 | */ |
152 | ||
153 | static void mf_str(adns_query qu, void *datap) { | |
154 | char **rrp= datap; | |
155 | ||
156 | adns__makefinal_str(qu,rrp); | |
157 | } | |
158 | ||
eb81d633 | 159 | /* |
b365d68a | 160 | * _intstr (mf) |
eb81d633 | 161 | */ |
162 | ||
163 | static void mf_intstr(adns_query qu, void *datap) { | |
164 | adns_rr_intstr *rrp= datap; | |
165 | ||
166 | adns__makefinal_str(qu,&rrp->str); | |
167 | } | |
168 | ||
eb81d633 | 169 | /* |
b365d68a | 170 | * _manyistr (mf) |
eb81d633 | 171 | */ |
172 | ||
173 | static void mf_manyistr(adns_query qu, void *datap) { | |
174 | adns_rr_intstr **rrp= datap; | |
175 | adns_rr_intstr *te, *table; | |
176 | void *tablev; | |
177 | int tc; | |
178 | ||
179 | for (tc=0, te= *rrp; te->i >= 0; te++, tc++); | |
180 | tablev= *rrp; | |
181 | adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1)); | |
182 | *rrp= table= tablev; | |
183 | for (te= *rrp; te->i >= 0; te++) | |
184 | adns__makefinal_str(qu,&te->str); | |
185 | } | |
186 | ||
eb81d633 | 187 | /* |
b365d68a | 188 | * _txt (pa,cs) |
eb81d633 | 189 | */ |
190 | ||
609133ee | 191 | static adns_status pa_txt(const parseinfo *pai, int cbyte, |
192 | int max, void *datap) { | |
eb81d633 | 193 | adns_rr_intstr **rrp= datap, *table, *te; |
194 | const byte *dgram= pai->dgram; | |
195 | int ti, tc, l, startbyte; | |
9ec44266 | 196 | adns_status st; |
eb81d633 | 197 | |
198 | startbyte= cbyte; | |
199 | if (cbyte >= max) return adns_s_invaliddata; | |
200 | tc= 0; | |
201 | while (cbyte < max) { | |
202 | GET_B(cbyte,l); | |
203 | cbyte+= l; | |
9ec44266 | 204 | tc++; |
eb81d633 | 205 | } |
b365d68a | 206 | if (cbyte != max || !tc) return adns_s_invaliddata; |
eb81d633 | 207 | |
208 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); | |
209 | if (!table) R_NOMEM; | |
210 | ||
211 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { | |
b365d68a | 212 | st= pap_qstring(pai, &cbyte, max, &te->i, &te->str); |
9ec44266 | 213 | if (st) return st; |
eb81d633 | 214 | } |
215 | assert(cbyte == max); | |
216 | ||
217 | te->i= -1; | |
218 | te->str= 0; | |
219 | ||
220 | *rrp= table; | |
221 | return adns_s_ok; | |
828d89bd | 222 | } |
223 | ||
b365d68a | 224 | static adns_status cs_txt(vbuf *vb, const void *datap) { |
225 | const adns_rr_intstr *const *rrp= datap; | |
226 | const adns_rr_intstr *current; | |
227 | adns_status st; | |
228 | int spc; | |
229 | ||
230 | for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) { | |
231 | if (spc) CSP_ADDSTR(" "); | |
232 | st= csp_qstring(vb,current->str,current->i); if (st) return st; | |
233 | } | |
234 | return adns_s_ok; | |
235 | } | |
236 | ||
237 | /* | |
238 | * _hinfo (cs) | |
239 | */ | |
240 | ||
241 | static adns_status cs_hinfo(vbuf *vb, const void *datap) { | |
242 | const adns_rr_intstrpair *rrp= datap; | |
243 | adns_status st; | |
244 | ||
245 | st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st; | |
246 | CSP_ADDSTR(" "); | |
247 | st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st; | |
248 | return adns_s_ok; | |
249 | } | |
250 | ||
eb81d633 | 251 | /* |
c91e3ed3 | 252 | * _inaddr (pa,di,cs +search_sortlist, dip_genaddr, csp_genaddr) |
eb81d633 | 253 | */ |
254 | ||
609133ee | 255 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, |
256 | int max, void *datap) { | |
e062dcae | 257 | struct in_addr *storeto= datap; |
e7a9ca47 | 258 | |
259 | if (max-cbyte != 4) return adns_s_invaliddata; | |
1dfe95d8 | 260 | memcpy(storeto, pai->dgram + cbyte, 4); |
e7a9ca47 | 261 | return adns_s_ok; |
262 | } | |
263 | ||
f930c455 | 264 | static int search_sortlist(adns_state ads, int af, const void *ad) { |
09957b1c | 265 | const struct sortlist *slp; |
c4e5d3cc MW |
266 | const struct in6_addr *a6; |
267 | union gen_addr a; | |
09957b1c | 268 | int i; |
c4e5d3cc MW |
269 | int v6mappedp= 0; |
270 | ||
271 | if (af == AF_INET6) { | |
272 | a6= ad; | |
273 | if (IN6_IS_ADDR_V4MAPPED(a6)) { | |
274 | a.v4.s_addr= htonl(((unsigned long)a6->s6_addr[12] << 24) | | |
275 | ((unsigned long)a6->s6_addr[13] << 16) | | |
276 | ((unsigned long)a6->s6_addr[14] << 8) | | |
277 | ((unsigned long)a6->s6_addr[15] << 0)); | |
278 | v6mappedp= 1; | |
279 | } | |
280 | } | |
281 | ||
09957b1c | 282 | for (i=0, slp=ads->sortlist; |
609133ee | 283 | i<ads->nsortlist && |
c4e5d3cc MW |
284 | !adns__addr_match_p(af,ad, slp->af,&slp->base,&slp->mask) && |
285 | !(v6mappedp && | |
286 | adns__addr_match_p(AF_INET,&a, slp->af,&slp->base,&slp->mask)); | |
09957b1c | 287 | i++, slp++); |
288 | return i; | |
eb81d633 | 289 | } |
290 | ||
f930c455 | 291 | static int dip_genaddr(adns_state ads, int af, const void *a, const void *b) { |
09957b1c | 292 | int ai, bi; |
293 | ||
294 | if (!ads->nsortlist) return 0; | |
295 | ||
f930c455 MW |
296 | ai= search_sortlist(ads,af,a); |
297 | bi= search_sortlist(ads,af,b); | |
09957b1c | 298 | return bi<ai; |
299 | } | |
300 | ||
609133ee | 301 | static int di_inaddr(adns_state ads, |
302 | const void *datap_a, const void *datap_b) { | |
f930c455 | 303 | return dip_genaddr(ads,AF_INET,datap_a,datap_b); |
e062dcae | 304 | } |
305 | ||
c91e3ed3 MW |
306 | static adns_status csp_genaddr(vbuf *vb, int af, const void *p) { |
307 | char buf[ADNS_ADDR2TEXT_BUFLEN]; | |
308 | int len= sizeof(buf); | |
309 | adns_rr_addr a; | |
310 | int err; | |
311 | ||
312 | memset(&a, 0, sizeof(a)); | |
313 | a.addr.sa.sa_family= af; | |
314 | adns__sockaddr_inject(p, 0, &a.addr.sa); | |
315 | err= adns_addr2text(&a.addr.sa,0, buf,&len, 0); assert(!err); | |
316 | CSP_ADDSTR(buf); | |
1dfe95d8 | 317 | return adns_s_ok; |
86e7b8d9 | 318 | } |
e7a9ca47 | 319 | |
c91e3ed3 MW |
320 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { |
321 | return csp_genaddr(vb, AF_INET,datap); | |
322 | } | |
323 | ||
eb81d633 | 324 | /* |
eeee7503 MW |
325 | * _in6addr (pa,di,cs) |
326 | */ | |
327 | ||
328 | static adns_status pa_in6addr(const parseinfo *pai, int cbyte, | |
329 | int max, void *datap) { | |
330 | struct in6_addr *storeto= datap; | |
331 | ||
332 | if (max-cbyte != 16) return adns_s_invaliddata; | |
333 | memcpy(storeto->s6_addr, pai->dgram + cbyte, 16); | |
334 | return adns_s_ok; | |
335 | } | |
336 | ||
337 | static int di_in6addr(adns_state ads, | |
338 | const void *datap_a, const void *datap_b) { | |
339 | return dip_genaddr(ads,AF_INET6,datap_a,datap_b); | |
340 | } | |
341 | ||
342 | static adns_status cs_in6addr(vbuf *vb, const void *datap) { | |
343 | return csp_genaddr(vb,AF_INET6,datap); | |
344 | } | |
345 | ||
346 | /* | |
8a8511e2 | 347 | * _addr (pap,pa,di,div,csp,cs,gsz,qs |
b5e689a3 MW |
348 | * +search_sortlist_sa, dip_sockaddr, addr_rrtypes, |
349 | * addr_submit, icb_addr) | |
eb81d633 | 350 | */ |
351 | ||
92c8ebba MW |
352 | static const typeinfo tinfo_addrsub; |
353 | ||
b5e689a3 | 354 | #define ADDR_RRTYPES(_) _(a) _(aaaa) |
92c8ebba MW |
355 | |
356 | static const adns_rrtype addr_all_rrtypes[] = { | |
357 | #define RRTY_CODE(ty) adns_r_##ty, | |
358 | ADDR_RRTYPES(RRTY_CODE) | |
359 | #undef RRTY_CODE | |
360 | }; | |
361 | ||
362 | enum { | |
363 | #define RRTY_INDEX(ty) addr__ri_##ty, | |
364 | ADDR_RRTYPES(RRTY_INDEX) | |
365 | #undef RRTY_INDEX | |
366 | addr_nrrtypes, | |
367 | #define RRTY_FLAG(ty) addr_rf_##ty = 1 << addr__ri_##ty, | |
368 | ADDR_RRTYPES(RRTY_FLAG) | |
369 | addr__rrty_hunoz | |
370 | #undef RRTY_FLAG | |
371 | }; | |
372 | ||
373 | static unsigned addr_rrtypeflag(adns_rrtype type) { | |
374 | int i; | |
375 | ||
376 | type &= adns_rrt_typemask; | |
377 | for (i=0; i<addr_nrrtypes && type!=addr_all_rrtypes[i]; i++); | |
378 | return i < addr_nrrtypes ? 1 << i : 0; | |
379 | } | |
380 | ||
8a8511e2 MW |
381 | static adns_status pap_addr(const parseinfo *pai, int rrty, size_t rrsz, |
382 | int *cbyte_io, int max, adns_rr_addr *storeto) { | |
1dfe95d8 | 383 | const byte *dgram= pai->dgram; |
8a8511e2 | 384 | int af, addrlen, salen; |
21249652 | 385 | struct in6_addr v6map; |
8a8511e2 MW |
386 | const void *oaddr= dgram + *cbyte_io; |
387 | int avail= max - *cbyte_io; | |
388 | int step= -1; | |
389 | void *addrp= 0; | |
390 | ||
391 | switch (rrty) { | |
392 | case adns_r_a: | |
21249652 MW |
393 | if ((pai->qu->flags & adns_qf_ipv6_mapv4) && |
394 | (pai->qu->answer->type & adns__qtf_bigaddr)) { | |
395 | if (avail < 4) return adns_s_invaliddata; | |
396 | memset(v6map.s6_addr + 0, 0x00, 10); | |
397 | memset(v6map.s6_addr + 10, 0xff, 2); | |
398 | memcpy(v6map.s6_addr + 12, oaddr, 4); | |
399 | oaddr= v6map.s6_addr; avail= sizeof(v6map.s6_addr); | |
400 | if (step < 0) step= 4; | |
401 | goto aaaa; | |
402 | } | |
8a8511e2 MW |
403 | af= AF_INET; addrlen= 4; |
404 | addrp= &storeto->addr.inet.sin_addr; | |
405 | salen= sizeof(storeto->addr.inet); | |
406 | break; | |
21249652 MW |
407 | case adns_r_aaaa: |
408 | aaaa: | |
409 | af= AF_INET6; addrlen= 16; | |
410 | addrp= storeto->addr.inet6.sin6_addr.s6_addr; | |
411 | salen= sizeof(storeto->addr.inet6); | |
412 | break; | |
8a8511e2 MW |
413 | } |
414 | assert(addrp); | |
c7836bc9 | 415 | |
8a8511e2 MW |
416 | assert(offsetof(adns_rr_addr, addr) + salen <= rrsz); |
417 | if (addrlen < avail) return adns_s_invaliddata; | |
418 | if (step < 0) step= addrlen; | |
419 | *cbyte_io += step; | |
420 | memset(&storeto->addr, 0, salen); | |
421 | storeto->len= salen; | |
422 | storeto->addr.sa.sa_family= af; | |
423 | memcpy(addrp, oaddr, addrlen); | |
424 | ||
425 | return adns_s_ok; | |
426 | } | |
427 | ||
428 | static adns_status pa_addr(const parseinfo *pai, int cbyte, | |
429 | int max, void *datap) { | |
430 | int err= pap_addr(pai, pai->qu->answer->type & adns_rrt_typemask, | |
431 | pai->qu->answer->rrsz, &cbyte, max, datap); | |
432 | if (err) return err; | |
433 | if (cbyte != max) return adns_s_invaliddata; | |
828d89bd | 434 | return adns_s_ok; |
435 | } | |
436 | ||
f930c455 | 437 | static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa) { |
07554ccd MW |
438 | union gen_addr a; |
439 | adns__sockaddr_extract(sa, &a, 0); | |
440 | return search_sortlist(ads, sa->sa_family, &a); | |
f930c455 | 441 | } |
07554ccd | 442 | |
f930c455 MW |
443 | static int dip_sockaddr(adns_state ads, |
444 | const struct sockaddr *sa, | |
445 | const struct sockaddr *sb) { | |
446 | if (!ads->sortlist) return 0; | |
447 | return search_sortlist_sa(ads, sa) > search_sortlist_sa(ads, sb); | |
448 | } | |
449 | ||
09957b1c | 450 | static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) { |
551ff40f | 451 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
f930c455 | 452 | return dip_sockaddr(ads, &ap->addr.sa, &bp->addr.sa); |
828d89bd | 453 | } |
454 | ||
09957b1c | 455 | static int div_addr(void *context, const void *datap_a, const void *datap_b) { |
456 | const adns_state ads= context; | |
457 | ||
458 | return di_addr(ads, datap_a, datap_b); | |
459 | } | |
460 | ||
551ff40f | 461 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
c91e3ed3 MW |
462 | char buf[ADNS_ADDR2TEXT_BUFLEN]; |
463 | int len= sizeof(buf); | |
464 | int err; | |
828d89bd | 465 | |
466 | switch (rrp->addr.inet.sin_family) { | |
467 | case AF_INET: | |
b365d68a | 468 | CSP_ADDSTR("INET "); |
c91e3ed3 MW |
469 | goto a2t; |
470 | case AF_INET6: | |
471 | CSP_ADDSTR("INET6 "); | |
472 | goto a2t; | |
473 | a2t: | |
474 | err= adns_addr2text(&rrp->addr.sa,0, buf,&len, 0); assert(!err); | |
475 | CSP_ADDSTR(buf); | |
828d89bd | 476 | break; |
477 | default: | |
478 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); | |
1dfe95d8 | 479 | CSP_ADDSTR(buf); |
828d89bd | 480 | break; |
481 | } | |
482 | return adns_s_ok; | |
483 | } | |
484 | ||
1dfe95d8 | 485 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
551ff40f | 486 | const adns_rr_addr *rrp= datap; |
1dfe95d8 | 487 | |
488 | return csp_addr(vb,rrp); | |
489 | } | |
490 | ||
b0a32b17 MW |
491 | static int gsz_addr(const typeinfo *typei, adns_rrtype type) { |
492 | return type & adns__qtf_bigaddr ? | |
493 | sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only); | |
494 | } | |
495 | ||
92c8ebba MW |
496 | static unsigned addr_rrtypes(adns_state ads, adns_rrtype type, |
497 | adns_queryflags qf) { | |
498 | /* Return a mask of addr_rf_... flags indicating which address families are | |
499 | * wanted, given a query type and flags. | |
500 | */ | |
501 | return addr_rf_a; | |
502 | } | |
503 | ||
504 | static void icb_addr(adns_query parent, adns_query child); | |
505 | ||
506 | static void addr_subqueries(adns_query qu, struct timeval now, | |
507 | adns_queryflags qf_extra, | |
508 | const byte *qd_dgram, int qd_dglen) { | |
509 | int i, err, id; | |
510 | adns_query cqu; | |
511 | adns_queryflags qf= (qu->flags & ~adns_qf_search) | qf_extra; | |
512 | adns_rrtype qtf= qu->answer->type & adns__qtf_deref; | |
513 | unsigned which= qu->ctx.tinfo.addr.want & ~qu->ctx.tinfo.addr.have; | |
514 | qcontext ctx; | |
515 | ||
516 | memset(&ctx, 0, sizeof(ctx)); | |
517 | ctx.callback= icb_addr; | |
518 | for (i=0; i<addr_nrrtypes; i++) { | |
519 | if (!(which & (1 << i))) continue; | |
520 | err= adns__mkquery_frdgram(qu->ads, &qu->vb, &id, qd_dgram,qd_dglen, | |
521 | DNS_HDRSIZE, addr_all_rrtypes[i], qf); | |
522 | if (err) goto x_error; | |
523 | err= adns__internal_submit(qu->ads, &cqu, qu, &tinfo_addrsub, | |
524 | addr_all_rrtypes[i] | qtf, | |
525 | &qu->vb, id, qf, now, &ctx); | |
526 | if (err) goto x_error; | |
527 | cqu->answer->rrsz= qu->answer->rrsz; | |
528 | } | |
529 | qu->state= query_childw; | |
530 | LIST_LINK_TAIL(qu->ads->childw, qu); | |
531 | return; | |
532 | ||
533 | x_error: | |
534 | adns__query_fail(qu, err); | |
535 | } | |
536 | ||
b5e689a3 MW |
537 | static adns_status addr_submit(adns_query parent, adns_query *query_r, |
538 | vbuf *qumsg_vb, int id, unsigned want, | |
539 | adns_queryflags flags, struct timeval now, | |
540 | qcontext *ctx) { | |
541 | /* This is effectively a substitute for adns__internal_submit, intended for | |
542 | * the case where the caller (possibly) only wants a subset of the | |
543 | * available record types. The memory management and callback rules are | |
544 | * the same as for adns__internal_submit. | |
545 | * | |
546 | * Some differences: the query is linked onto the parent's children list | |
547 | * before exit (though the parent's state is not changed, and it is not | |
548 | * linked into the childw list queue); and we fiddle with the `tinfo' | |
549 | * portion of the context structure (yes, modifying *ctx), since this is, | |
550 | * in fact, the main purpose of this function. | |
551 | */ | |
552 | ||
553 | adns_state ads= parent->ads; | |
554 | adns_query qu; | |
555 | adns_status err; | |
556 | adns_rrtype type= ((adns_r_addr & adns_rrt_reprmask) | | |
557 | (parent->answer->type & ~adns_rrt_reprmask)); | |
558 | ||
559 | ctx->tinfo.addr.want= want; | |
560 | ctx->tinfo.addr.have= 0; | |
561 | err= adns__internal_submit(ads, &qu, parent, adns__findtype(adns_r_addr), | |
562 | type, qumsg_vb, id, flags, now, ctx); | |
563 | if (err) return err; | |
564 | ||
565 | *query_r= qu; | |
566 | return adns_s_ok; | |
567 | } | |
568 | ||
92c8ebba MW |
569 | static adns_status append_addrs(adns_query qu, size_t rrsz, |
570 | adns_rr_addr **dp, int *dlen, | |
571 | const adns_rr_addr *sp, int slen) { | |
572 | /* Append a vector of slen addr records, each of size rrsz, starting at ap, | |
573 | * to a vector starting at *dp, of length *dlen. On successful completion, | |
574 | * *dp and *dlen are updated. | |
575 | */ | |
576 | ||
577 | size_t drrsz= *dlen*rrsz, srrsz= slen*rrsz; | |
578 | byte *p; | |
579 | ||
580 | if (!slen) return adns_s_ok; | |
581 | p= adns__alloc_interim(qu, drrsz + srrsz); | |
582 | if (!p) R_NOMEM; | |
583 | if (*dlen) { | |
584 | memcpy(p, *dp, drrsz); | |
585 | adns__free_interim(qu, *dp); | |
586 | } | |
587 | memcpy(p + drrsz, sp, srrsz); | |
588 | *dlen += slen; | |
589 | *dp= (adns_rr_addr *)p; | |
590 | return adns_s_ok; | |
591 | } | |
592 | ||
593 | static void propagate_ttl(adns_query to, adns_query from) | |
594 | { if (to->expires > from->expires) to->expires= from->expires; } | |
595 | ||
596 | static adns_status copy_cname_from_child(adns_query parent, adns_query child) { | |
597 | adns_answer *pans= parent->answer, *cans= child->answer; | |
598 | size_t n= strlen(cans->cname) + 1; | |
599 | ||
600 | pans->cname= adns__alloc_preserved(parent, n); | |
601 | if (!pans->cname) R_NOMEM; | |
602 | memcpy(pans->cname, cans->cname, n); | |
603 | return adns_s_ok; | |
604 | } | |
605 | ||
606 | static void done_addr_type(adns_query qu, adns_rrtype type) { | |
607 | unsigned f= addr_rrtypeflag(type); | |
608 | assert(f); qu->ctx.tinfo.addr.have |= f; | |
609 | } | |
610 | ||
611 | static void icb_addr(adns_query parent, adns_query child) { | |
612 | adns_state ads= parent->ads; | |
613 | adns_answer *pans= parent->answer, *cans= child->answer; | |
614 | struct timeval now; | |
615 | adns_status err; | |
616 | ||
617 | propagate_ttl(parent, child); | |
618 | ||
619 | if (cans->cname && !pans->cname) { | |
620 | err= copy_cname_from_child(parent, child); | |
621 | if (err) goto x_err; | |
622 | } | |
623 | ||
624 | if ((parent->flags & adns_qf_search) && | |
625 | !pans->cname && cans->status == adns_s_nxdomain) { | |
626 | /* We're searching a list of suffixes, and the name doesn't exist. Try | |
627 | * the next one. | |
628 | */ | |
629 | ||
630 | adns__cancel_children(parent); | |
631 | adns__free_interim(parent, pans->rrs.bytes); | |
632 | pans->rrs.bytes= 0; pans->nrrs= 0; | |
633 | if (gettimeofday(&now, 0)) goto x_gtod; | |
634 | adns__search_next(ads, parent, now); | |
635 | return; | |
636 | } | |
637 | ||
638 | if (cans->status && cans->status != adns_s_nodata) | |
639 | { err= cans->status; goto x_err; } | |
640 | ||
641 | assert(pans->rrsz == cans->rrsz); | |
642 | err= append_addrs(parent, pans->rrsz, | |
643 | &pans->rrs.addr, &pans->nrrs, | |
644 | cans->rrs.addr, cans->nrrs); | |
645 | if (err) goto x_err; | |
646 | done_addr_type(parent, cans->type); | |
647 | ||
648 | if (parent->children.head) LIST_LINK_TAIL(ads->childw, parent); | |
649 | else if (!pans->nrrs) adns__query_fail(parent, adns_s_nodata); | |
650 | else adns__query_done(parent); | |
651 | return; | |
652 | ||
653 | x_gtod: | |
654 | adns__diag(ads, -1, parent, "gettimeofday failed: %s", strerror(errno)); | |
655 | err= adns_s_systemfail; | |
656 | goto x_err; | |
657 | ||
658 | x_err: | |
659 | adns__query_fail(parent, err); | |
660 | } | |
661 | ||
662 | static void qs_addr(adns_query qu, struct timeval now) { | |
663 | if (!qu->ctx.tinfo.addr.want) { | |
664 | qu->ctx.tinfo.addr.want= addr_rrtypes(qu->ads, qu->answer->type, | |
665 | qu->flags); | |
666 | qu->ctx.tinfo.addr.have= 0; | |
667 | } | |
668 | addr_subqueries(qu, now, 0, qu->query_dgram, qu->query_dglen); | |
669 | } | |
670 | ||
eb81d633 | 671 | /* |
b365d68a | 672 | * _domain (pap,csp,cs) |
673 | * _dom_raw (pa) | |
eb81d633 | 674 | */ |
675 | ||
1dfe95d8 | 676 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
677 | char **domain_r, parsedomain_flags flags) { | |
e062dcae | 678 | adns_status st; |
679 | char *dm; | |
680 | ||
1dfe95d8 | 681 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
682 | pai->dgram,pai->dglen, cbyte_io, max); | |
e062dcae | 683 | if (st) return st; |
1dfe95d8 | 684 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
e062dcae | 685 | |
1dfe95d8 | 686 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
687 | if (!dm) R_NOMEM; | |
e062dcae | 688 | |
1dfe95d8 | 689 | dm[pai->qu->vb.used]= 0; |
690 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); | |
e062dcae | 691 | |
692 | *domain_r= dm; | |
693 | return adns_s_ok; | |
694 | } | |
695 | ||
b365d68a | 696 | static adns_status csp_domain(vbuf *vb, const char *domain) { |
697 | CSP_ADDSTR(domain); | |
698 | if (!*domain) CSP_ADDSTR("."); | |
699 | return adns_s_ok; | |
700 | } | |
701 | ||
702 | static adns_status cs_domain(vbuf *vb, const void *datap) { | |
703 | const char *const *domainp= datap; | |
704 | return csp_domain(vb,*domainp); | |
705 | } | |
706 | ||
609133ee | 707 | static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, |
708 | int max, void *datap) { | |
b365d68a | 709 | char **rrp= datap; |
710 | adns_status st; | |
711 | ||
712 | st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok); | |
713 | if (st) return st; | |
714 | ||
715 | if (cbyte != max) return adns_s_invaliddata; | |
716 | return adns_s_ok; | |
717 | } | |
718 | ||
eb81d633 | 719 | /* |
720 | * _host_raw (pa) | |
721 | */ | |
722 | ||
609133ee | 723 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, |
724 | int max, void *datap) { | |
e062dcae | 725 | char **rrp= datap; |
ffbda80c | 726 | adns_status st; |
86e7b8d9 | 727 | |
1dfe95d8 | 728 | st= pap_domain(pai, &cbyte, max, rrp, |
729 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
e062dcae | 730 | if (st) return st; |
731 | ||
732 | if (cbyte != max) return adns_s_invaliddata; | |
733 | return adns_s_ok; | |
734 | } | |
ffbda80c | 735 | |
eb81d633 | 736 | /* |
382b81f7 | 737 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs, icb_hostaddr) |
eb81d633 | 738 | */ |
c7836bc9 | 739 | |
1dfe95d8 | 740 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
b5e689a3 | 741 | unsigned *want_io, size_t addrsz, |
1dfe95d8 | 742 | int *cbyte_io, int count, int dmstart) { |
743 | int rri, naddrs; | |
b5e689a3 MW |
744 | unsigned typef, want= *want_io, need= want; |
745 | int type, class, rdlen, rdend, rdstart, ownermatched; | |
73dba56e | 746 | unsigned long ttl; |
1dfe95d8 | 747 | adns_status st; |
c7836bc9 | 748 | |
b5e689a3 | 749 | for (rri=0, naddrs=0; rri<count; rri++) { |
609133ee | 750 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, |
751 | pai->dglen, cbyte_io, | |
73dba56e | 752 | &type, &class, &ttl, &rdlen, &rdstart, |
1dfe95d8 | 753 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
c7836bc9 | 754 | if (st) return st; |
b5e689a3 MW |
755 | if (!ownermatched || class != DNS_CLASS_IN) continue; |
756 | typef= addr_rrtypeflag(type); | |
757 | if (!(want & typef)) continue; | |
758 | need &= ~typef; | |
759 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) R_NOMEM; | |
73dba56e | 760 | adns__update_expires(pai->qu,ttl,pai->now); |
8a8511e2 | 761 | rdend= rdstart + rdlen; |
b5e689a3 | 762 | st= pap_addr(pai, type, addrsz, &rdstart, rdend, |
8a8511e2 | 763 | (adns_rr_addr *)(pai->qu->vb.buf + naddrs*addrsz)); |
c7836bc9 | 764 | if (st) return st; |
8a8511e2 | 765 | if (rdstart != rdend) return adns_s_invaliddata; |
1dfe95d8 | 766 | naddrs++; |
c7836bc9 | 767 | } |
b5e689a3 MW |
768 | if (naddrs > 0) { |
769 | st= append_addrs(pai->qu, addrsz, &ha->addrs, &ha->naddrs, | |
770 | (const adns_rr_addr *)pai->qu->vb.buf, naddrs); | |
771 | if (st) return st; | |
c7836bc9 | 772 | ha->astatus= adns_s_ok; |
1dfe95d8 | 773 | |
b5e689a3 MW |
774 | if (!need) { |
775 | adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf, | |
776 | div_addr, pai->ads); | |
777 | } | |
c7836bc9 | 778 | } |
b5e689a3 | 779 | *want_io= need; |
c7836bc9 | 780 | return adns_s_ok; |
781 | } | |
782 | ||
551ff40f | 783 | static void icb_hostaddr(adns_query parent, adns_query child) { |
551ff40f | 784 | adns_answer *cans= child->answer; |
0ea82d76 | 785 | adns_rr_hostaddr *rrp= child->ctx.pinfo.hostaddr; |
4218fb9a | 786 | adns_state ads= parent->ads; |
b365d68a | 787 | adns_status st; |
b5e689a3 | 788 | size_t addrsz= gsz_addr(0, parent->answer->type); |
551ff40f | 789 | |
b5e689a3 MW |
790 | st= cans->status == adns_s_nodata ? adns_s_ok : cans->status; |
791 | if (st) goto done; | |
792 | propagate_ttl(parent, child); | |
793 | ||
794 | assert(addrsz == cans->rrsz); | |
795 | st= append_addrs(parent, addrsz, | |
796 | &rrp->addrs, &rrp->naddrs, | |
797 | cans->rrs.addr, cans->nrrs); | |
798 | if (st) goto done; | |
799 | if (!rrp->naddrs) { st= adns_s_nodata; goto done; } | |
800 | ||
801 | if (!adns__vbuf_ensure(&parent->vb, addrsz)) | |
802 | { st= adns_s_nomemory; goto done; } | |
803 | adns__isort(rrp->addrs, rrp->naddrs, addrsz, parent->vb.buf, | |
804 | div_addr, ads); | |
805 | ||
806 | done: | |
807 | if (st) { | |
808 | adns__free_interim(parent, rrp->addrs); | |
809 | rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : 0; | |
810 | } | |
a6536d8b | 811 | |
b5e689a3 | 812 | rrp->astatus= st; |
4218fb9a | 813 | if (parent->children.head) { |
814 | LIST_LINK_TAIL(ads->childw,parent); | |
815 | } else { | |
816 | adns__query_done(parent); | |
817 | } | |
551ff40f | 818 | } |
819 | ||
1dfe95d8 | 820 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
821 | int max, adns_rr_hostaddr *rrp) { | |
c7836bc9 | 822 | adns_status st; |
823 | int dmstart, cbyte; | |
7da21070 | 824 | qcontext ctx; |
825 | int id; | |
826 | adns_query nqu; | |
4b707d8b | 827 | adns_queryflags nflags; |
b5e689a3 | 828 | unsigned want; |
b0a32b17 | 829 | size_t addrsz= gsz_addr(0, pai->qu->answer->type); |
c7836bc9 | 830 | |
831 | dmstart= cbyte= *cbyte_io; | |
1dfe95d8 | 832 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
833 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
c7836bc9 | 834 | if (st) return st; |
835 | *cbyte_io= cbyte; | |
836 | ||
837 | rrp->astatus= adns_s_ok; | |
b5e689a3 | 838 | rrp->naddrs= 0; |
c7836bc9 | 839 | rrp->addrs= 0; |
840 | ||
1dfe95d8 | 841 | cbyte= pai->nsstart; |
c7836bc9 | 842 | |
b5e689a3 MW |
843 | want= addr_rrtypes(pai->ads, pai->qu->answer->type, pai->qu->flags); |
844 | ||
845 | st= pap_findaddrs(pai, rrp, &want, addrsz, &cbyte, pai->nscount, dmstart); | |
c7836bc9 | 846 | if (st) return st; |
b5e689a3 | 847 | if (!want) return adns_s_ok; |
c7836bc9 | 848 | |
b5e689a3 | 849 | st= pap_findaddrs(pai, rrp, &want, addrsz, &cbyte, pai->arcount, dmstart); |
c7836bc9 | 850 | if (st) return st; |
b5e689a3 | 851 | if (!want) return adns_s_ok; |
1dfe95d8 | 852 | |
7da21070 | 853 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
854 | pai->dgram, pai->dglen, dmstart, | |
855 | adns_r_addr, adns_qf_quoteok_query); | |
856 | if (st) return st; | |
551ff40f | 857 | |
a6536d8b | 858 | ctx.ext= 0; |
859 | ctx.callback= icb_hostaddr; | |
0ea82d76 | 860 | ctx.pinfo.hostaddr= rrp; |
4b707d8b | 861 | |
21249652 | 862 | nflags= adns_qf_quoteok_query | (pai->qu->flags & adns_qf_ipv6_mapv4); |
4b707d8b | 863 | if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid; |
864 | ||
b5e689a3 MW |
865 | st= addr_submit(pai->qu, &nqu, &pai->qu->vb, id, want, |
866 | nflags, pai->now, &ctx); | |
7da21070 | 867 | if (st) return st; |
868 | ||
1dfe95d8 | 869 | return adns_s_ok; |
c7836bc9 | 870 | } |
871 | ||
609133ee | 872 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, |
873 | int max, void *datap) { | |
1dfe95d8 | 874 | adns_rr_hostaddr *rrp= datap; |
c7836bc9 | 875 | adns_status st; |
c7836bc9 | 876 | |
1dfe95d8 | 877 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
c7836bc9 | 878 | if (st) return st; |
879 | if (cbyte != max) return adns_s_invaliddata; | |
880 | ||
1dfe95d8 | 881 | return adns_s_ok; |
882 | } | |
c7836bc9 | 883 | |
609133ee | 884 | static int dip_hostaddr(adns_state ads, |
885 | const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { | |
1dfe95d8 | 886 | if (ap->astatus != bp->astatus) return ap->astatus; |
887 | if (ap->astatus) return 0; | |
c7836bc9 | 888 | |
f930c455 | 889 | return dip_sockaddr(ads, &ap->addrs[0].addr.sa, &bp->addrs[0].addr.sa); |
1dfe95d8 | 890 | } |
891 | ||
609133ee | 892 | static int di_hostaddr(adns_state ads, |
893 | const void *datap_a, const void *datap_b) { | |
1dfe95d8 | 894 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
895 | ||
09957b1c | 896 | return dip_hostaddr(ads, ap,bp); |
c7836bc9 | 897 | } |
898 | ||
eb81d633 | 899 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
900 | void *tablev; | |
b0a32b17 | 901 | size_t addrsz= gsz_addr(0, qu->answer->type); |
e062dcae | 902 | |
eb81d633 | 903 | adns__makefinal_str(qu,&rrp->host); |
904 | tablev= rrp->addrs; | |
b0a32b17 | 905 | adns__makefinal_block(qu, &tablev, rrp->naddrs*addrsz); |
eb81d633 | 906 | rrp->addrs= tablev; |
e062dcae | 907 | } |
908 | ||
eb81d633 | 909 | static void mf_hostaddr(adns_query qu, void *datap) { |
910 | adns_rr_hostaddr *rrp= datap; | |
e062dcae | 911 | |
eb81d633 | 912 | mfp_hostaddr(qu,rrp); |
e062dcae | 913 | } |
914 | ||
1dfe95d8 | 915 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
a6f1dc92 | 916 | const char *errstr; |
1dfe95d8 | 917 | adns_status st; |
ac77ffc1 | 918 | char buf[20]; |
1dfe95d8 | 919 | int i; |
920 | ||
a6f1dc92 | 921 | st= csp_domain(vb,rrp->host); if (st) return st; |
1dfe95d8 | 922 | |
b365d68a | 923 | CSP_ADDSTR(" "); |
ac77ffc1 | 924 | CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus)); |
925 | ||
926 | sprintf(buf," %d ",rrp->astatus); | |
927 | CSP_ADDSTR(buf); | |
a6f1dc92 | 928 | |
ac77ffc1 | 929 | CSP_ADDSTR(adns_errabbrev(rrp->astatus)); |
a6f1dc92 | 930 | CSP_ADDSTR(" "); |
ac77ffc1 | 931 | |
a6f1dc92 | 932 | errstr= adns_strerror(rrp->astatus); |
933 | st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st; | |
b365d68a | 934 | |
935 | if (rrp->naddrs >= 0) { | |
936 | CSP_ADDSTR(" ("); | |
937 | for (i=0; i<rrp->naddrs; i++) { | |
938 | CSP_ADDSTR(" "); | |
1dfe95d8 | 939 | st= csp_addr(vb,&rrp->addrs[i]); |
940 | } | |
b365d68a | 941 | CSP_ADDSTR(" )"); |
942 | } else { | |
943 | CSP_ADDSTR(" ?"); | |
1dfe95d8 | 944 | } |
945 | return adns_s_ok; | |
946 | } | |
947 | ||
948 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { | |
949 | const adns_rr_hostaddr *rrp= datap; | |
950 | ||
951 | return csp_hostaddr(vb,rrp); | |
952 | } | |
953 | ||
eb81d633 | 954 | /* |
955 | * _mx_raw (pa,di) | |
956 | */ | |
1dfe95d8 | 957 | |
609133ee | 958 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, |
959 | int max, void *datap) { | |
eb81d633 | 960 | const byte *dgram= pai->dgram; |
961 | adns_rr_intstr *rrp= datap; | |
962 | adns_status st; | |
963 | int pref; | |
1dfe95d8 | 964 | |
eb81d633 | 965 | if (cbyte+2 > max) return adns_s_invaliddata; |
966 | GET_W(cbyte,pref); | |
967 | rrp->i= pref; | |
968 | st= pap_domain(pai, &cbyte, max, &rrp->str, | |
969 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
970 | if (st) return st; | |
1dfe95d8 | 971 | |
eb81d633 | 972 | if (cbyte != max) return adns_s_invaliddata; |
973 | return adns_s_ok; | |
974 | } | |
1dfe95d8 | 975 | |
09957b1c | 976 | static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 977 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
978 | ||
979 | if (ap->i < bp->i) return 0; | |
980 | if (ap->i > bp->i) return 1; | |
981 | return 0; | |
1dfe95d8 | 982 | } |
983 | ||
eb81d633 | 984 | /* |
985 | * _mx (pa,di) | |
986 | */ | |
1dfe95d8 | 987 | |
609133ee | 988 | static adns_status pa_mx(const parseinfo *pai, int cbyte, |
989 | int max, void *datap) { | |
eb81d633 | 990 | const byte *dgram= pai->dgram; |
991 | adns_rr_inthostaddr *rrp= datap; | |
992 | adns_status st; | |
993 | int pref; | |
994 | ||
995 | if (cbyte+2 > max) return adns_s_invaliddata; | |
996 | GET_W(cbyte,pref); | |
997 | rrp->i= pref; | |
998 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); | |
999 | if (st) return st; | |
1000 | ||
1001 | if (cbyte != max) return adns_s_invaliddata; | |
1002 | return adns_s_ok; | |
1003 | } | |
1004 | ||
09957b1c | 1005 | static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) { |
eb81d633 | 1006 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
1007 | ||
1008 | if (ap->i < bp->i) return 0; | |
1009 | if (ap->i > bp->i) return 1; | |
09957b1c | 1010 | return dip_hostaddr(ads, &ap->ha, &bp->ha); |
1dfe95d8 | 1011 | } |
1012 | ||
eb81d633 | 1013 | /* |
1014 | * _inthostaddr (mf,cs) | |
1015 | */ | |
1016 | ||
1dfe95d8 | 1017 | static void mf_inthostaddr(adns_query qu, void *datap) { |
1018 | adns_rr_inthostaddr *rrp= datap; | |
1019 | ||
1020 | mfp_hostaddr(qu,&rrp->ha); | |
1021 | } | |
1022 | ||
eb81d633 | 1023 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
1024 | const adns_rr_inthostaddr *rrp= datap; | |
1025 | char buf[10]; | |
e062dcae | 1026 | |
eb81d633 | 1027 | sprintf(buf,"%u ",rrp->i); |
1028 | CSP_ADDSTR(buf); | |
1029 | ||
1030 | return csp_hostaddr(vb,&rrp->ha); | |
ffbda80c | 1031 | } |
1032 | ||
eb81d633 | 1033 | /* |
b365d68a | 1034 | * _inthost (cs) |
1035 | */ | |
1036 | ||
1037 | static adns_status cs_inthost(vbuf *vb, const void *datap) { | |
1038 | const adns_rr_intstr *rrp= datap; | |
1039 | char buf[10]; | |
1040 | ||
1041 | sprintf(buf,"%u ",rrp->i); | |
1042 | CSP_ADDSTR(buf); | |
1043 | return csp_domain(vb,rrp->str); | |
1044 | } | |
1045 | ||
1046 | /* | |
938b0228 | 1047 | * _ptr (ckl,pa +icb_ptr) |
a6536d8b | 1048 | */ |
1049 | ||
938b0228 MW |
1050 | static adns_status ckl_ptr(adns_state ads, adns_queryflags flags, |
1051 | union checklabel_state *cls, qcontext *ctx, | |
1052 | int labnum, const char *label, int lablen) { | |
9c6ba699 MW |
1053 | if (lablen) { |
1054 | if (adns__revparse_label(&cls->ptr, labnum, label,lablen)) | |
1055 | return adns_s_querydomainwrong; | |
938b0228 | 1056 | } else { |
9c6ba699 MW |
1057 | if (adns__revparse_done(&cls->ptr, labnum, |
1058 | &ctx->tinfo.ptr.rev_rrtype, | |
1059 | &ctx->tinfo.ptr.addr)) | |
1060 | return adns_s_querydomainwrong; | |
938b0228 MW |
1061 | } |
1062 | return adns_s_ok; | |
1063 | } | |
1064 | ||
a6536d8b | 1065 | static void icb_ptr(adns_query parent, adns_query child) { |
1066 | adns_answer *cans= child->answer; | |
f930c455 | 1067 | const struct af_addr *queried; |
ac5a2748 | 1068 | const unsigned char *found; |
4218fb9a | 1069 | adns_state ads= parent->ads; |
a6536d8b | 1070 | int i; |
1071 | ||
1072 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { | |
1073 | adns__query_fail(parent,adns_s_inconsistent); | |
1074 | return; | |
1075 | } else if (cans->status) { | |
1076 | adns__query_fail(parent,cans->status); | |
1077 | return; | |
1078 | } | |
1079 | ||
ac5a2748 MW |
1080 | queried= &parent->ctx.tinfo.ptr.addr; |
1081 | for (i=0, found=cans->rrs.bytes; i<cans->nrrs; i++, found+=cans->rrsz) { | |
9c6ba699 MW |
1082 | if (adns__genaddr_equal_p(queried->af,&queried->addr, |
1083 | parent->ctx.tinfo.ptr.addr.af,found)) { | |
4218fb9a | 1084 | if (!parent->children.head) { |
1085 | adns__query_done(parent); | |
1086 | return; | |
1087 | } else { | |
1088 | LIST_LINK_TAIL(ads->childw,parent); | |
1089 | return; | |
1090 | } | |
a6536d8b | 1091 | } |
1092 | } | |
1093 | ||
1094 | adns__query_fail(parent,adns_s_inconsistent); | |
1095 | } | |
1096 | ||
609133ee | 1097 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, |
1098 | int max, void *datap) { | |
a6536d8b | 1099 | char **rrp= datap; |
1100 | adns_status st; | |
9c6ba699 | 1101 | adns_rrtype rrtype= pai->qu->ctx.tinfo.ptr.rev_rrtype; |
938b0228 | 1102 | int cbyte, id; |
a6536d8b | 1103 | adns_query nqu; |
1104 | qcontext ctx; | |
1105 | ||
1106 | cbyte= dmstart; | |
1107 | st= pap_domain(pai, &cbyte, max, rrp, | |
1108 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1109 | if (st) return st; | |
1110 | if (cbyte != max) return adns_s_invaliddata; | |
1111 | ||
a6536d8b | 1112 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
1113 | pai->dgram, pai->dglen, dmstart, | |
9c6ba699 | 1114 | rrtype, adns_qf_quoteok_query); |
a6536d8b | 1115 | if (st) return st; |
1116 | ||
1117 | ctx.ext= 0; | |
1118 | ctx.callback= icb_ptr; | |
0ea82d76 MW |
1119 | memset(&ctx.pinfo,0,sizeof(ctx.pinfo)); |
1120 | memset(&ctx.tinfo,0,sizeof(ctx.tinfo)); | |
e2ae1741 IJ |
1121 | st= adns__internal_submit(pai->ads, &nqu, pai->qu, |
1122 | adns__findtype(rrtype), | |
9c6ba699 MW |
1123 | rrtype, &pai->qu->vb, id, |
1124 | adns_qf_quoteok_query, pai->now, &ctx); | |
a6536d8b | 1125 | if (st) return st; |
1126 | ||
a6536d8b | 1127 | return adns_s_ok; |
1128 | } | |
1129 | ||
1130 | /* | |
b365d68a | 1131 | * _strpair (mf) |
9ec44266 | 1132 | */ |
1133 | ||
1134 | static void mf_strpair(adns_query qu, void *datap) { | |
1135 | adns_rr_strpair *rrp= datap; | |
1136 | ||
1137 | adns__makefinal_str(qu,&rrp->array[0]); | |
1138 | adns__makefinal_str(qu,&rrp->array[1]); | |
1139 | } | |
1140 | ||
9ec44266 | 1141 | /* |
b365d68a | 1142 | * _intstrpair (mf) |
9ec44266 | 1143 | */ |
1144 | ||
1145 | static void mf_intstrpair(adns_query qu, void *datap) { | |
1146 | adns_rr_intstrpair *rrp= datap; | |
1147 | ||
1148 | adns__makefinal_str(qu,&rrp->array[0].str); | |
1149 | adns__makefinal_str(qu,&rrp->array[1].str); | |
1150 | } | |
1151 | ||
9ec44266 | 1152 | /* |
1153 | * _hinfo (pa) | |
1154 | */ | |
1155 | ||
609133ee | 1156 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, |
1157 | int max, void *datap) { | |
9ec44266 | 1158 | adns_rr_intstrpair *rrp= datap; |
1159 | adns_status st; | |
1160 | int i; | |
1161 | ||
1162 | for (i=0; i<2; i++) { | |
b365d68a | 1163 | st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
9ec44266 | 1164 | if (st) return st; |
1165 | } | |
1166 | ||
1167 | if (cbyte != max) return adns_s_invaliddata; | |
1168 | ||
1169 | return adns_s_ok; | |
1170 | } | |
1171 | ||
1172 | /* | |
382b81f7 | 1173 | * _mailbox (pap,cs +pap_mailbox822) |
9ec44266 | 1174 | */ |
1175 | ||
609133ee | 1176 | static adns_status pap_mailbox822(const parseinfo *pai, |
1177 | int *cbyte_io, int max, char **mb_r) { | |
eaa44731 | 1178 | int lablen, labstart, i, needquote, c, r, neednorm; |
1179 | const unsigned char *p; | |
1180 | char *str; | |
1181 | findlabel_state fls; | |
1182 | adns_status st; | |
1183 | vbuf *vb; | |
1184 | ||
1185 | vb= &pai->qu->vb; | |
1186 | vb->used= 0; | |
1187 | adns__findlabel_start(&fls, pai->ads, | |
1188 | -1, pai->qu, | |
1189 | pai->dgram, pai->dglen, max, | |
1190 | *cbyte_io, cbyte_io); | |
1191 | st= adns__findlabel_next(&fls,&lablen,&labstart); | |
1192 | if (!lablen) { | |
b365d68a | 1193 | adns__vbuf_appendstr(vb,"."); |
eaa44731 | 1194 | goto x_ok; |
1195 | } | |
1196 | ||
1197 | neednorm= 1; | |
1198 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) { | |
1199 | c= *p++; | |
1200 | if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata; | |
1201 | if (c == '.' && !neednorm) neednorm= 1; | |
7672a872 | 1202 | else if (c==' ' || c>=127 || ctype_822special(c)) needquote++; |
eaa44731 | 1203 | else neednorm= 0; |
1204 | } | |
1205 | ||
1206 | if (needquote || neednorm) { | |
1207 | r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM; | |
1208 | adns__vbuf_appendq(vb,"\"",1); | |
1209 | for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) { | |
1210 | c= *p; | |
b365d68a | 1211 | if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1); |
eaa44731 | 1212 | adns__vbuf_appendq(vb,p,1); |
1213 | } | |
1214 | adns__vbuf_appendq(vb,"\"",1); | |
1215 | } else { | |
1216 | r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM; | |
1217 | } | |
1218 | ||
1219 | r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM; | |
1220 | ||
1221 | st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram); | |
1222 | if (st) return st; | |
1223 | ||
1224 | x_ok: | |
1225 | str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM; | |
1226 | memcpy(str,vb->buf,vb->used); | |
1227 | str[vb->used]= 0; | |
1228 | *mb_r= str; | |
1229 | return adns_s_ok; | |
9ec44266 | 1230 | } |
1231 | ||
9da4a044 | 1232 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
1233 | char **mb_r) { | |
2c6eb096 | 1234 | if (pai->qu->typei->typekey & adns__qtf_mail822) { |
9da4a044 | 1235 | return pap_mailbox822(pai, cbyte_io, max, mb_r); |
1236 | } else { | |
b365d68a | 1237 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
9da4a044 | 1238 | } |
1239 | } | |
1240 | ||
b365d68a | 1241 | static adns_status csp_mailbox(vbuf *vb, const char *mailbox) { |
1242 | return csp_domain(vb,mailbox); | |
1243 | } | |
1244 | ||
9ec44266 | 1245 | /* |
b365d68a | 1246 | * _rp (pa,cs) |
9ec44266 | 1247 | */ |
1248 | ||
609133ee | 1249 | static adns_status pa_rp(const parseinfo *pai, int cbyte, |
1250 | int max, void *datap) { | |
9ec44266 | 1251 | adns_rr_strpair *rrp= datap; |
1252 | adns_status st; | |
1253 | ||
1254 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); | |
1255 | if (st) return st; | |
1256 | ||
1257 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); | |
1258 | if (st) return st; | |
1259 | ||
1260 | if (cbyte != max) return adns_s_invaliddata; | |
1261 | return adns_s_ok; | |
1262 | } | |
1263 | ||
b365d68a | 1264 | static adns_status cs_rp(vbuf *vb, const void *datap) { |
1265 | const adns_rr_strpair *rrp= datap; | |
1266 | adns_status st; | |
1267 | ||
1268 | st= csp_mailbox(vb,rrp->array[0]); if (st) return st; | |
1269 | CSP_ADDSTR(" "); | |
1270 | st= csp_domain(vb,rrp->array[1]); if (st) return st; | |
1271 | ||
1272 | return adns_s_ok; | |
1273 | } | |
1274 | ||
9ec44266 | 1275 | /* |
1276 | * _soa (pa,mf,cs) | |
1277 | */ | |
1278 | ||
609133ee | 1279 | static adns_status pa_soa(const parseinfo *pai, int cbyte, |
1280 | int max, void *datap) { | |
9ec44266 | 1281 | adns_rr_soa *rrp= datap; |
1282 | const byte *dgram= pai->dgram; | |
1283 | adns_status st; | |
1284 | int msw, lsw, i; | |
1285 | ||
1286 | st= pap_domain(pai, &cbyte, max, &rrp->mname, | |
1287 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1288 | if (st) return st; | |
1289 | ||
1290 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); | |
1291 | if (st) return st; | |
1292 | ||
1293 | if (cbyte+20 != max) return adns_s_invaliddata; | |
1294 | ||
1295 | for (i=0; i<5; i++) { | |
1296 | GET_W(cbyte,msw); | |
1297 | GET_W(cbyte,lsw); | |
1298 | (&rrp->serial)[i]= (msw<<16) | lsw; | |
1299 | } | |
1300 | ||
1301 | return adns_s_ok; | |
1302 | } | |
1303 | ||
1304 | static void mf_soa(adns_query qu, void *datap) { | |
1305 | adns_rr_soa *rrp= datap; | |
1306 | ||
1307 | adns__makefinal_str(qu,&rrp->mname); | |
1308 | adns__makefinal_str(qu,&rrp->rname); | |
1309 | } | |
1310 | ||
1311 | static adns_status cs_soa(vbuf *vb, const void *datap) { | |
1312 | const adns_rr_soa *rrp= datap; | |
1313 | char buf[20]; | |
1314 | int i; | |
1315 | adns_status st; | |
1316 | ||
b365d68a | 1317 | st= csp_domain(vb,rrp->mname); if (st) return st; |
9ec44266 | 1318 | CSP_ADDSTR(" "); |
b365d68a | 1319 | st= csp_mailbox(vb,rrp->rname); if (st) return st; |
9ec44266 | 1320 | |
1321 | for (i=0; i<5; i++) { | |
1322 | sprintf(buf," %lu",(&rrp->serial)[i]); | |
1323 | CSP_ADDSTR(buf); | |
1324 | } | |
1325 | ||
1326 | return adns_s_ok; | |
1327 | } | |
1328 | ||
1329 | /* | |
e8e5aeac | 1330 | * _srv* (ckl,(pap),pa*2,mf*2,di,(csp),cs*2,postsort) |
d19b03d0 | 1331 | */ |
1332 | ||
e8e5aeac MW |
1333 | static adns_status ckl_srv(adns_state ads, adns_queryflags flags, |
1334 | union checklabel_state *cls, qcontext *ctx, | |
1335 | int labnum, const char *label, int lablen) { | |
1336 | if (labnum < 2 && !(flags & adns_qf_quoteok_query)) { | |
1337 | if (!lablen || label[0] != '_') return adns_s_querydomaininvalid; | |
1338 | return adns_s_ok; | |
d19b03d0 | 1339 | } |
e8e5aeac | 1340 | return adns__ckl_hostname(ads, flags, cls, ctx, labnum, label, lablen); |
d19b03d0 | 1341 | } |
1342 | ||
05fc6b3a | 1343 | static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max, |
0e45654b | 1344 | adns_rr_srvha *rrp |
1345 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1346 | const byte *dgram= pai->dgram; |
05fc6b3a | 1347 | int ti, cbyte; |
1348 | ||
1349 | cbyte= *cbyte_io; | |
1350 | if ((*cbyte_io += 6) > max) return adns_s_invaliddata; | |
401c256a | 1351 | |
1352 | rrp->priority= GET_W(cbyte, ti); | |
1353 | rrp->weight= GET_W(cbyte, ti); | |
1354 | rrp->port= GET_W(cbyte, ti); | |
1355 | return adns_s_ok; | |
1356 | } | |
1357 | ||
1358 | static adns_status pa_srvraw(const parseinfo *pai, int cbyte, | |
1359 | int max, void *datap) { | |
1360 | adns_rr_srvraw *rrp= datap; | |
1361 | adns_status st; | |
1362 | ||
05fc6b3a | 1363 | st= pap_srv_begin(pai,&cbyte,max,datap); |
401c256a | 1364 | if (st) return st; |
1365 | ||
1366 | st= pap_domain(pai, &cbyte, max, &rrp->host, | |
1367 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); | |
1368 | if (st) return st; | |
1369 | ||
1370 | if (cbyte != max) return adns_s_invaliddata; | |
1371 | return adns_s_ok; | |
1372 | } | |
1373 | ||
1374 | static adns_status pa_srvha(const parseinfo *pai, int cbyte, | |
1375 | int max, void *datap) { | |
1376 | adns_rr_srvha *rrp= datap; | |
1377 | adns_status st; | |
1378 | ||
05fc6b3a | 1379 | st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st; |
401c256a | 1380 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st; |
1381 | if (cbyte != max) return adns_s_invaliddata; | |
1382 | return adns_s_ok; | |
1383 | } | |
1384 | ||
1385 | static void mf_srvraw(adns_query qu, void *datap) { | |
1386 | adns_rr_srvraw *rrp= datap; | |
1387 | adns__makefinal_str(qu, &rrp->host); | |
1388 | } | |
1389 | ||
1390 | static void mf_srvha(adns_query qu, void *datap) { | |
1391 | adns_rr_srvha *rrp= datap; | |
1392 | mfp_hostaddr(qu,&rrp->ha); | |
1393 | } | |
1394 | ||
1395 | static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) { | |
1396 | const adns_rr_srvraw *ap= datap_a, *bp= datap_b; | |
1397 | /* might be const adns_rr_svhostaddr* */ | |
1398 | ||
1399 | if (ap->priority < bp->priority) return 0; | |
1400 | if (ap->priority > bp->priority) return 1; | |
1401 | return 0; | |
1402 | } | |
1403 | ||
0e45654b | 1404 | static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp |
1405 | /* might be adns_rr_srvraw* */) { | |
401c256a | 1406 | char buf[30]; |
1407 | sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port); | |
1408 | CSP_ADDSTR(buf); | |
1409 | return adns_s_ok; | |
1410 | } | |
1411 | ||
1412 | static adns_status cs_srvraw(vbuf *vb, const void *datap) { | |
1413 | const adns_rr_srvraw *rrp= datap; | |
1414 | adns_status st; | |
1415 | ||
0e45654b | 1416 | st= csp_srv_begin(vb,(const void*)rrp); if (st) return st; |
401c256a | 1417 | return csp_domain(vb,rrp->host); |
1418 | } | |
1419 | ||
1420 | static adns_status cs_srvha(vbuf *vb, const void *datap) { | |
1421 | const adns_rr_srvha *rrp= datap; | |
1422 | adns_status st; | |
1423 | ||
0e45654b | 1424 | st= csp_srv_begin(vb,(const void*)datap); if (st) return st; |
401c256a | 1425 | return csp_hostaddr(vb,&rrp->ha); |
1426 | } | |
1427 | ||
042b0909 | 1428 | static void postsort_srv(adns_state ads, void *array, int nrrs,int rrsz, |
d24e2a7e | 1429 | const struct typeinfo *typei) { |
0e45654b | 1430 | /* we treat everything in the array as if it were an adns_rr_srvha |
1431 | * even though the array might be of adns_rr_srvraw. That's OK | |
1432 | * because they have the same prefix, which is all we access. | |
042b0909 | 1433 | * We use rrsz, too, rather than naive array indexing, of course. |
0e45654b | 1434 | */ |
1435 | char *workbegin, *workend, *search, *arrayend; | |
1436 | const adns_rr_srvha *rr; | |
1437 | union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp; | |
1438 | int cpriority, totalweight, runtotal; | |
1439 | long randval; | |
1440 | ||
042b0909 MW |
1441 | assert(rrsz <= sizeof(rrtmp)); |
1442 | for (workbegin= array, arrayend= workbegin + rrsz * nrrs; | |
0e45654b | 1443 | workbegin < arrayend; |
1444 | workbegin= workend) { | |
1445 | cpriority= (rr=(void*)workbegin)->priority; | |
1446 | ||
1447 | for (workend= workbegin, totalweight= 0; | |
1448 | workend < arrayend && (rr=(void*)workend)->priority == cpriority; | |
042b0909 | 1449 | workend += rrsz) { |
0e45654b | 1450 | totalweight += rr->weight; |
0e45654b | 1451 | } |
1452 | ||
1453 | /* Now workbegin..(workend-1) incl. are exactly all of the RRs of | |
1454 | * cpriority. From now on, workbegin points to the `remaining' | |
1455 | * records: we select one record at a time (RFC2782 `Usage rules' | |
1456 | * and `Format of the SRV RR' subsection `Weight') to place at | |
1457 | * workbegin (swapping with the one that was there, and then | |
1458 | * advance workbegin. */ | |
1459 | for (; | |
042b0909 MW |
1460 | workbegin + rrsz < workend; /* don't bother if just one */ |
1461 | workbegin += rrsz) { | |
0e45654b | 1462 | |
1463 | randval= nrand48(ads->rand48xsubi); | |
1464 | randval %= (totalweight + 1); | |
0e45654b | 1465 | /* makes it into 0..totalweight inclusive; with 2^10 RRs, |
1466 | * totalweight must be <= 2^26 so probability nonuniformity is | |
1467 | * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie | |
1468 | * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5). | |
1469 | */ | |
1470 | ||
1471 | for (search=workbegin, runtotal=0; | |
1472 | (runtotal += (rr=(void*)search)->weight) < randval; | |
042b0909 | 1473 | search += rrsz); |
0e45654b | 1474 | assert(search < arrayend); |
1475 | totalweight -= rr->weight; | |
1476 | if (search != workbegin) { | |
042b0909 MW |
1477 | memcpy(&rrtmp, workbegin, rrsz); |
1478 | memcpy(workbegin, search, rrsz); | |
1479 | memcpy(search, &rrtmp, rrsz); | |
0e45654b | 1480 | } |
1481 | } | |
1482 | } | |
d24e2a7e | 1483 | /* tests: |
1484 | * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. | |
1485 | * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk. | |
1486 | * ./adnshost_s -t srv- _jabber._tcp.jabber.org | |
1487 | */ | |
1488 | } | |
1489 | ||
d19b03d0 | 1490 | /* |
2c6eb096 | 1491 | * _byteblock (mf) |
1492 | */ | |
1493 | ||
1494 | static void mf_byteblock(adns_query qu, void *datap) { | |
1495 | adns_rr_byteblock *rrp= datap; | |
1496 | void *bytes= rrp->data; | |
1497 | adns__makefinal_block(qu,&bytes,rrp->len); | |
1498 | rrp->data= bytes; | |
1499 | } | |
1500 | ||
1501 | /* | |
1502 | * _opaque (pa,cs) | |
1503 | */ | |
1504 | ||
1505 | static adns_status pa_opaque(const parseinfo *pai, int cbyte, | |
1506 | int max, void *datap) { | |
1507 | adns_rr_byteblock *rrp= datap; | |
1508 | ||
1509 | rrp->len= max - cbyte; | |
1510 | rrp->data= adns__alloc_interim(pai->qu, rrp->len); | |
1511 | if (!rrp->data) R_NOMEM; | |
1512 | memcpy(rrp->data, pai->dgram + cbyte, rrp->len); | |
1513 | return adns_s_ok; | |
1514 | } | |
1515 | ||
1516 | static adns_status cs_opaque(vbuf *vb, const void *datap) { | |
1517 | const adns_rr_byteblock *rrp= datap; | |
1518 | char buf[10]; | |
1519 | int l; | |
1520 | unsigned char *p; | |
1521 | ||
1522 | sprintf(buf,"\\# %d",rrp->len); | |
1523 | CSP_ADDSTR(buf); | |
1524 | ||
1525 | for (l= rrp->len, p= rrp->data; | |
1526 | l>=4; | |
1527 | l -= 4, p += 4) { | |
1528 | sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]); | |
1529 | CSP_ADDSTR(buf); | |
1530 | } | |
1531 | for (; | |
1532 | l>0; | |
1533 | l--, p++) { | |
1534 | sprintf(buf," %02x",*p); | |
1535 | CSP_ADDSTR(buf); | |
1536 | } | |
1537 | return adns_s_ok; | |
1538 | } | |
1539 | ||
1540 | /* | |
eb81d633 | 1541 | * _flat (mf) |
1542 | */ | |
1543 | ||
ffbda80c | 1544 | static void mf_flat(adns_query qu, void *data) { } |
1545 | ||
eb81d633 | 1546 | /* |
1547 | * Now the table. | |
1548 | */ | |
1549 | ||
e062dcae | 1550 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
86e7b8d9 | 1551 | |
c5fd1fbb | 1552 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1553 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_##memb, \ |
c5fd1fbb | 1554 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
a586770a MW |
1555 | adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send, \ |
1556 | CDR(__VA_ARGS__) } | |
c5fd1fbb | 1557 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...) \ |
d24b603f | 1558 | { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_flat, \ |
c5fd1fbb | 1559 | GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer, \ |
a586770a MW |
1560 | adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send, \ |
1561 | CDR(__VA_ARGS__) } | |
c5fd1fbb MW |
1562 | |
1563 | #define di_0 0 | |
98a3f706 | 1564 | |
1565 | static const typeinfo typeinfos[] = { | |
eb81d633 | 1566 | /* Must be in ascending order of rrtype ! */ |
609133ee | 1567 | /* mem-mgmt code rrt fmt member parser comparer printer */ |
1568 | ||
c5fd1fbb MW |
1569 | FLAT_TYPE(a, "A", 0, inaddr, inaddr, inaddr,inaddr ), |
1570 | DEEP_TYPE(ns_raw, "NS", "raw",str, host_raw,0, domain ), | |
1571 | DEEP_TYPE(cname, "CNAME", 0, str, dom_raw, 0, domain ), | |
1572 | DEEP_TYPE(soa_raw,"SOA", "raw",soa, soa, 0, soa ), | |
1573 | DEEP_TYPE(ptr_raw,"PTR", "raw",str, host_raw,0, domain ), | |
1574 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,hinfo, 0, hinfo ), | |
1575 | DEEP_TYPE(mx_raw, "MX", "raw",intstr, mx_raw, mx_raw,inthost ), | |
1576 | DEEP_TYPE(txt, "TXT", 0, manyistr, txt, 0, txt ), | |
1577 | DEEP_TYPE(rp_raw, "RP", "raw",strpair, rp, 0, rp ), | |
eeee7503 | 1578 | FLAT_TYPE(aaaa, "AAAA", 0, in6addr, in6addr, in6addr,in6addr ), |
c5fd1fbb | 1579 | DEEP_TYPE(srv_raw,"SRV", "raw",srvraw , srvraw, srv, srvraw, |
e8e5aeac | 1580 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb | 1581 | |
b0a32b17 | 1582 | FLAT_TYPE(addr, "A", "addr", addr, addr, addr, addr, |
92c8ebba | 1583 | .getrrsz= gsz_addr, .query_send= qs_addr), |
c5fd1fbb | 1584 | DEEP_TYPE(ns, "NS", "+addr",hostaddr, hostaddr,hostaddr,hostaddr ), |
938b0228 MW |
1585 | DEEP_TYPE(ptr, "PTR","checked",str, ptr, 0, domain, |
1586 | .checklabel= ckl_ptr), | |
c5fd1fbb MW |
1587 | DEEP_TYPE(mx, "MX", "+addr",inthostaddr,mx, mx, inthostaddr, ), |
1588 | DEEP_TYPE(srv, "SRV","+addr",srvha, srvha, srv, srvha, | |
e8e5aeac | 1589 | .checklabel= ckl_srv, .postsort= postsort_srv), |
c5fd1fbb MW |
1590 | |
1591 | DEEP_TYPE(soa, "SOA","822", soa, soa, 0, soa ), | |
1592 | DEEP_TYPE(rp, "RP", "822", strpair, rp, 0, rp ), | |
98a3f706 | 1593 | }; |
1594 | ||
92c8ebba MW |
1595 | static const typeinfo tinfo_addrsub = |
1596 | FLAT_TYPE(none, "<addr>","sub",addr, addr, 0, addr, | |
1597 | .getrrsz= gsz_addr); | |
1598 | ||
2c6eb096 | 1599 | static const typeinfo typeinfo_unknown= |
c5fd1fbb | 1600 | DEEP_TYPE(unknown,0, "unknown",byteblock,opaque, 0, opaque ); |
2c6eb096 | 1601 | |
f759e52e | 1602 | const typeinfo *adns__findtype(adns_rrtype type) { |
1603 | const typeinfo *begin, *end, *mid; | |
98a3f706 | 1604 | |
2c6eb096 | 1605 | if (type & adns_r_unknown) return &typeinfo_unknown; |
d24b603f | 1606 | type &= adns_rrt_reprmask; |
2c6eb096 | 1607 | |
98a3f706 | 1608 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
1609 | ||
1610 | while (begin < end) { | |
1611 | mid= begin + ((end-begin)>>1); | |
2c6eb096 | 1612 | if (mid->typekey == type) return mid; |
1613 | if (type > mid->typekey) begin= mid+1; | |
98a3f706 | 1614 | else end= mid; |
1615 | } | |
1616 | return 0; | |
1617 | } |