98db6da3 |
1 | /* |
2 | * types.c |
3 | * - RR-type-specific code, and the machinery to call it |
4 | */ |
5 | /* |
6 | * This file is part of adns, which is Copyright (C) 1997, 1998 Ian Jackson |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 2, or (at your option) |
11 | * any later version. |
12 | * |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | * GNU General Public License for more details. |
17 | * |
18 | * You should have received a copy of the GNU General Public License |
19 | * along with this program; if not, write to the Free Software Foundation, |
20 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
21 | */ |
5c596e4d |
22 | |
d4c7b0b1 |
23 | #include <stdlib.h> |
cd363ffd |
24 | #include <string.h> |
d4c7b0b1 |
25 | |
1e9efa71 |
26 | #include <arpa/inet.h> |
27 | |
5c596e4d |
28 | #include "internal.h" |
29 | |
9b86645c |
30 | #define R_NOMEM return adns_s_nomemory |
26eb6bdc |
31 | #define CSP_ADDSTR(s) if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; else; |
32 | |
14180727 |
33 | /* |
34 | * order of sections: |
35 | * |
61093792 |
36 | * _string (pap) |
14180727 |
37 | * _textdata, _qstring (csp) |
38 | * _str (mf,cs) |
61093792 |
39 | * _intstr (mf,csp,cs) |
14180727 |
40 | * _manyistr (mf,cs) |
41 | * _txt (pa) |
42 | * _inaddr (pa,dip,di) |
43 | * _addr (pa,di,csp,cs) |
44 | * _domain (pap) |
45 | * _host_raw (pa) |
46 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs) |
47 | * _mx_raw (pa,di) |
48 | * _mx (pa,di) |
49 | * _inthostaddr (mf,cs) |
cd1bde2f |
50 | * _ptr (pa) |
61093792 |
51 | * _strpair (mf,cs) |
52 | * _intstrpair (mf,cs) |
53 | * _hinfo (pa) |
54 | * _mailbox (pap) |
55 | * _rp (pa) |
56 | * _soa (pa,mf,cs) |
14180727 |
57 | * _flat (mf) |
58 | * |
59 | * within each section: |
60 | * pap_* |
61 | * pa_* |
62 | * dip_* |
63 | * di_* |
64 | * mfp_* |
65 | * mf_* |
66 | * csp_* |
67 | * cs_* |
68 | */ |
69 | |
70 | /* |
61093792 |
71 | * _string (pap) |
14180727 |
72 | * _textdata, _qstring (csp) |
73 | */ |
74 | |
61093792 |
75 | static adns_status pap_string(const parseinfo *pai, int *cbyte_io, int max, |
76 | int *len_r, char **str_r) { |
77 | /* Neither len_r nor str_r may be null. |
78 | * End of datagram (overrun) is indicated by returning adns_s_invaliddata; |
79 | */ |
80 | const byte *dgram= pai->dgram; |
81 | int l, cbyte; |
82 | char *str; |
83 | |
84 | cbyte= *cbyte_io; |
85 | |
86 | if (cbyte >= max) return adns_s_invaliddata; |
87 | GET_B(cbyte,l); |
88 | if (cbyte+l > max) return adns_s_invaliddata; |
89 | |
90 | str= adns__alloc_interim(pai->qu, l+1); |
91 | if (!str) R_NOMEM; |
92 | |
93 | str[l]= 0; |
94 | memcpy(str,dgram+cbyte,l); |
95 | |
96 | *len_r= l; |
97 | *str_r= str; |
98 | *cbyte_io= cbyte+l; |
99 | |
100 | return adns_s_ok; |
101 | } |
102 | |
14180727 |
103 | static adns_status csp_textdata(vbuf *vb, const char *dp, int len) { |
104 | unsigned char ch; |
105 | char buf[10]; |
106 | int cn; |
107 | |
108 | CSP_ADDSTR("\""); |
109 | for (cn=0; cn<len; cn++) { |
110 | ch= *dp++; |
111 | if (ch >= 32 && ch <= 126 && ch != '"' && ch != '\\') { |
112 | if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM; |
61093792 |
113 | } else if (ch == '\\') { |
114 | CSP_ADDSTR("\\\\"); |
14180727 |
115 | } else { |
61093792 |
116 | sprintf(buf,"\\x%02x",ch); |
14180727 |
117 | CSP_ADDSTR(buf); |
118 | } |
119 | } |
120 | CSP_ADDSTR("\""); |
121 | |
122 | return adns_s_ok; |
123 | } |
124 | |
125 | static adns_status csp_qstring(vbuf *vb, const char *dp) { |
126 | return csp_textdata(vb, dp, strlen(dp)); |
127 | } |
128 | |
129 | /* |
130 | * _str (mf,cs) |
131 | */ |
132 | |
133 | static void mf_str(adns_query qu, void *datap) { |
134 | char **rrp= datap; |
135 | |
136 | adns__makefinal_str(qu,rrp); |
137 | } |
138 | |
139 | static adns_status cs_str(vbuf *vb, const void *datap) { |
140 | const char *const *rrp= datap; |
141 | |
142 | return csp_qstring(vb,*rrp); |
143 | } |
144 | |
145 | /* |
61093792 |
146 | * _intstr (mf,csp,cs) |
14180727 |
147 | */ |
148 | |
149 | static void mf_intstr(adns_query qu, void *datap) { |
150 | adns_rr_intstr *rrp= datap; |
151 | |
152 | adns__makefinal_str(qu,&rrp->str); |
153 | } |
154 | |
61093792 |
155 | static adns_status csp_intstr(vbuf *vb, const adns_rr_intstr *rrp) { |
14180727 |
156 | char buf[10]; |
157 | |
158 | sprintf(buf,"%u ",rrp->i); |
159 | CSP_ADDSTR(buf); |
160 | return csp_qstring(vb,rrp->str); |
161 | } |
162 | |
61093792 |
163 | static adns_status cs_intstr(vbuf *vb, const void *datap) { |
164 | const adns_rr_intstr *rrp= datap; |
165 | |
166 | return csp_intstr(vb,rrp); |
167 | } |
168 | |
14180727 |
169 | /* |
170 | * _manyistr (mf,cs) |
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 | |
187 | static adns_status cs_manyistr(vbuf *vb, const void *datap) { |
188 | const adns_rr_intstr *const *rrp= datap; |
189 | const adns_rr_intstr *current; |
190 | adns_status st; |
191 | int spc; |
192 | |
193 | for (spc=0, current= *rrp; current->i >= 0; current++) { |
194 | if (spc) CSP_ADDSTR(" "); |
195 | st= csp_textdata(vb,current->str,current->i); if (st) return st; |
196 | } |
197 | return adns_s_ok; |
198 | } |
199 | |
200 | /* |
201 | * _txt (pa) |
202 | */ |
203 | |
204 | static adns_status pa_txt(const parseinfo *pai, int cbyte, int max, void *datap) { |
205 | adns_rr_intstr **rrp= datap, *table, *te; |
206 | const byte *dgram= pai->dgram; |
207 | int ti, tc, l, startbyte; |
61093792 |
208 | adns_status st; |
14180727 |
209 | |
210 | startbyte= cbyte; |
211 | if (cbyte >= max) return adns_s_invaliddata; |
212 | tc= 0; |
213 | while (cbyte < max) { |
214 | GET_B(cbyte,l); |
215 | cbyte+= l; |
61093792 |
216 | tc++; |
14180727 |
217 | } |
218 | if (cbyte != max) return adns_s_invaliddata; |
219 | |
220 | table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1)); |
221 | if (!table) R_NOMEM; |
222 | |
223 | for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) { |
61093792 |
224 | st= pap_string(pai, &cbyte, max, &te->i, &te->str); |
225 | if (st) return st; |
14180727 |
226 | } |
227 | assert(cbyte == max); |
228 | |
229 | te->i= -1; |
230 | te->str= 0; |
231 | |
232 | *rrp= table; |
233 | return adns_s_ok; |
cd363ffd |
234 | } |
235 | |
14180727 |
236 | /* |
237 | * _inaddr (pa,dip,di) |
238 | */ |
239 | |
26eb6bdc |
240 | static adns_status pa_inaddr(const parseinfo *pai, int cbyte, int max, void *datap) { |
f2ad23ee |
241 | struct in_addr *storeto= datap; |
68b7fc5f |
242 | |
243 | if (max-cbyte != 4) return adns_s_invaliddata; |
26eb6bdc |
244 | memcpy(storeto, pai->dgram + cbyte, 4); |
68b7fc5f |
245 | return adns_s_ok; |
246 | } |
247 | |
14180727 |
248 | static int dip_inaddr(struct in_addr a, struct in_addr b) { |
249 | /* fixme implement sortlist */ |
250 | return 0; |
251 | } |
252 | |
f2ad23ee |
253 | static int di_inaddr(const void *datap_a, const void *datap_b) { |
254 | const struct in_addr *ap= datap_a, *bp= datap_b; |
255 | |
256 | return dip_inaddr(*ap,*bp); |
257 | } |
258 | |
259 | static adns_status cs_inaddr(vbuf *vb, const void *datap) { |
260 | const struct in_addr *rrp= datap, rr= *rrp; |
1e9efa71 |
261 | const char *ia; |
262 | |
f2ad23ee |
263 | ia= inet_ntoa(rr); assert(ia); |
26eb6bdc |
264 | CSP_ADDSTR(ia); |
265 | return adns_s_ok; |
1e9efa71 |
266 | } |
68b7fc5f |
267 | |
14180727 |
268 | /* |
269 | * _addr (pa,di,csp,cs) |
270 | */ |
271 | |
26eb6bdc |
272 | static adns_status pa_addr(const parseinfo *pai, int cbyte, int max, void *datap) { |
bc01473e |
273 | adns_rr_addr *storeto= datap; |
26eb6bdc |
274 | const byte *dgram= pai->dgram; |
a1d2d0ed |
275 | |
cd363ffd |
276 | if (max-cbyte != 4) return adns_s_invaliddata; |
277 | storeto->len= sizeof(storeto->addr.inet); |
278 | memset(&storeto->addr,0,sizeof(storeto->addr.inet)); |
279 | storeto->addr.inet.sin_family= AF_INET; |
cd363ffd |
280 | memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4); |
281 | return adns_s_ok; |
282 | } |
283 | |
284 | static int di_addr(const void *datap_a, const void *datap_b) { |
bc01473e |
285 | const adns_rr_addr *ap= datap_a, *bp= datap_b; |
cd363ffd |
286 | |
26eb6bdc |
287 | assert(ap->addr.sa.sa_family == AF_INET); |
cd363ffd |
288 | return dip_inaddr(ap->addr.inet.sin_addr,bp->addr.inet.sin_addr); |
289 | } |
290 | |
bc01473e |
291 | static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) { |
cd363ffd |
292 | const char *ia; |
293 | static char buf[30]; |
294 | |
295 | switch (rrp->addr.inet.sin_family) { |
296 | case AF_INET: |
26eb6bdc |
297 | CSP_ADDSTR("AF_INET "); |
cd363ffd |
298 | ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia); |
26eb6bdc |
299 | CSP_ADDSTR(ia); |
cd363ffd |
300 | break; |
301 | default: |
302 | sprintf(buf,"AF=%u",rrp->addr.sa.sa_family); |
26eb6bdc |
303 | CSP_ADDSTR(buf); |
cd363ffd |
304 | break; |
305 | } |
306 | return adns_s_ok; |
307 | } |
308 | |
26eb6bdc |
309 | static adns_status cs_addr(vbuf *vb, const void *datap) { |
bc01473e |
310 | const adns_rr_addr *rrp= datap; |
26eb6bdc |
311 | |
312 | return csp_addr(vb,rrp); |
313 | } |
314 | |
14180727 |
315 | /* |
316 | * _domain (pap) |
317 | */ |
318 | |
26eb6bdc |
319 | static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max, |
320 | char **domain_r, parsedomain_flags flags) { |
f2ad23ee |
321 | adns_status st; |
322 | char *dm; |
323 | |
26eb6bdc |
324 | st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags, |
325 | pai->dgram,pai->dglen, cbyte_io, max); |
f2ad23ee |
326 | if (st) return st; |
26eb6bdc |
327 | if (!pai->qu->vb.used) return adns_s_invaliddata; |
f2ad23ee |
328 | |
26eb6bdc |
329 | dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1); |
330 | if (!dm) R_NOMEM; |
f2ad23ee |
331 | |
26eb6bdc |
332 | dm[pai->qu->vb.used]= 0; |
333 | memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used); |
f2ad23ee |
334 | |
335 | *domain_r= dm; |
336 | return adns_s_ok; |
337 | } |
338 | |
14180727 |
339 | /* |
340 | * _host_raw (pa) |
341 | */ |
342 | |
26eb6bdc |
343 | static adns_status pa_host_raw(const parseinfo *pai, int cbyte, int max, void *datap) { |
f2ad23ee |
344 | char **rrp= datap; |
cfdca685 |
345 | adns_status st; |
1e9efa71 |
346 | |
26eb6bdc |
347 | st= pap_domain(pai, &cbyte, max, rrp, |
348 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
f2ad23ee |
349 | if (st) return st; |
350 | |
351 | if (cbyte != max) return adns_s_invaliddata; |
352 | return adns_s_ok; |
353 | } |
cfdca685 |
354 | |
14180727 |
355 | /* |
bc01473e |
356 | * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs) |
14180727 |
357 | */ |
a1d2d0ed |
358 | |
26eb6bdc |
359 | static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha, |
360 | int *cbyte_io, int count, int dmstart) { |
361 | int rri, naddrs; |
a1d2d0ed |
362 | int type, class, rdlen, rdstart, ownermatched; |
26eb6bdc |
363 | adns_status st; |
a1d2d0ed |
364 | |
26eb6bdc |
365 | for (rri=0, naddrs=-1; rri<count; rri++) { |
366 | st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, pai->dglen, cbyte_io, |
367 | &type, &class, &rdlen, &rdstart, |
368 | pai->dgram, pai->dglen, dmstart, &ownermatched); |
a1d2d0ed |
369 | if (st) return st; |
26eb6bdc |
370 | if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) { |
371 | if (naddrs>0) break; else continue; |
372 | } |
373 | if (naddrs == -1) { |
374 | naddrs= 0; |
a1d2d0ed |
375 | } |
bc01473e |
376 | if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr))) R_NOMEM; |
377 | st= pa_addr(pai, rdstart,rdstart+rdlen, |
378 | pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr)); |
a1d2d0ed |
379 | if (st) return st; |
26eb6bdc |
380 | naddrs++; |
a1d2d0ed |
381 | } |
26eb6bdc |
382 | if (naddrs >= 0) { |
bc01473e |
383 | ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc |
384 | if (!ha->addrs) R_NOMEM; |
bc01473e |
385 | memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr)); |
26eb6bdc |
386 | ha->naddrs= naddrs; |
a1d2d0ed |
387 | ha->astatus= adns_s_ok; |
26eb6bdc |
388 | |
bc01473e |
389 | adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf, di_addr); |
a1d2d0ed |
390 | } |
391 | return adns_s_ok; |
392 | } |
393 | |
bc01473e |
394 | static void icb_hostaddr(adns_query parent, adns_query child) { |
bc01473e |
395 | adns_answer *cans= child->answer; |
cd1bde2f |
396 | adns_rr_hostaddr *rrp= child->ctx.info.hostaddr; |
bc01473e |
397 | |
398 | rrp->astatus= cans->status; |
399 | rrp->naddrs= cans->nrrs; |
400 | rrp->addrs= cans->rrs.addr; |
401 | adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*sizeof(adns_rr_addr)); |
cd1bde2f |
402 | |
403 | if (!parent->children.head) adns__query_done(parent); |
bc01473e |
404 | } |
405 | |
26eb6bdc |
406 | static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io, |
407 | int max, adns_rr_hostaddr *rrp) { |
a1d2d0ed |
408 | adns_status st; |
409 | int dmstart, cbyte; |
ba1ddf08 |
410 | qcontext ctx; |
411 | int id; |
412 | adns_query nqu; |
a1d2d0ed |
413 | |
414 | dmstart= cbyte= *cbyte_io; |
26eb6bdc |
415 | st= pap_domain(pai, &cbyte, max, &rrp->host, |
416 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
a1d2d0ed |
417 | if (st) return st; |
418 | *cbyte_io= cbyte; |
419 | |
420 | rrp->astatus= adns_s_ok; |
421 | rrp->naddrs= -1; |
422 | rrp->addrs= 0; |
423 | |
26eb6bdc |
424 | cbyte= pai->nsstart; |
a1d2d0ed |
425 | |
26eb6bdc |
426 | st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart); |
a1d2d0ed |
427 | if (st) return st; |
428 | if (rrp->naddrs != -1) return adns_s_ok; |
429 | |
26eb6bdc |
430 | st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart); |
a1d2d0ed |
431 | if (st) return st; |
432 | if (rrp->naddrs != -1) return adns_s_ok; |
26eb6bdc |
433 | |
ba1ddf08 |
434 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
435 | pai->dgram, pai->dglen, dmstart, |
436 | adns_r_addr, adns_qf_quoteok_query); |
437 | if (st) return st; |
bc01473e |
438 | |
cd1bde2f |
439 | ctx.ext= 0; |
440 | ctx.callback= icb_hostaddr; |
441 | ctx.info.hostaddr= rrp; |
ba1ddf08 |
442 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
443 | &pai->qu->vb, id, |
444 | adns_qf_quoteok_query, pai->now, 0, &ctx); |
445 | if (st) return st; |
446 | |
447 | nqu->parent= pai->qu; |
448 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); |
26eb6bdc |
449 | |
450 | return adns_s_ok; |
a1d2d0ed |
451 | } |
452 | |
26eb6bdc |
453 | static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, int max, void *datap) { |
454 | adns_rr_hostaddr *rrp= datap; |
a1d2d0ed |
455 | adns_status st; |
a1d2d0ed |
456 | |
26eb6bdc |
457 | st= pap_hostaddr(pai, &cbyte, max, rrp); |
a1d2d0ed |
458 | if (st) return st; |
459 | if (cbyte != max) return adns_s_invaliddata; |
460 | |
26eb6bdc |
461 | return adns_s_ok; |
462 | } |
a1d2d0ed |
463 | |
26eb6bdc |
464 | static int dip_hostaddr(const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) { |
465 | if (ap->astatus != bp->astatus) return ap->astatus; |
466 | if (ap->astatus) return 0; |
a1d2d0ed |
467 | |
26eb6bdc |
468 | assert(ap->addrs[0].addr.sa.sa_family == AF_INET); |
469 | assert(bp->addrs[0].addr.sa.sa_family == AF_INET); |
470 | return dip_inaddr(ap->addrs[0].addr.inet.sin_addr, bp->addrs[0].addr.inet.sin_addr); |
471 | } |
472 | |
473 | static int di_hostaddr(const void *datap_a, const void *datap_b) { |
474 | const adns_rr_hostaddr *ap= datap_a, *bp= datap_b; |
475 | |
476 | return dip_hostaddr(ap,bp); |
a1d2d0ed |
477 | } |
478 | |
14180727 |
479 | static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) { |
480 | void *tablev; |
f2ad23ee |
481 | |
14180727 |
482 | adns__makefinal_str(qu,&rrp->host); |
483 | tablev= rrp->addrs; |
484 | adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs)); |
485 | rrp->addrs= tablev; |
f2ad23ee |
486 | } |
487 | |
14180727 |
488 | static void mf_hostaddr(adns_query qu, void *datap) { |
489 | adns_rr_hostaddr *rrp= datap; |
f2ad23ee |
490 | |
14180727 |
491 | mfp_hostaddr(qu,rrp); |
f2ad23ee |
492 | } |
493 | |
26eb6bdc |
494 | static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) { |
495 | const char *to_add; |
496 | adns_status st; |
497 | int i; |
498 | |
499 | st= csp_qstring(vb,rrp->host); if (st) return st; |
500 | |
501 | if (rrp->astatus) { |
502 | CSP_ADDSTR(" - "); |
503 | CSP_ADDSTR(adns_strerror(rrp->astatus)); |
504 | } else { |
505 | assert(rrp->naddrs > 0); |
506 | for (i=0, to_add= ": "; i<rrp->naddrs; i++, to_add= ", ") { |
507 | CSP_ADDSTR(to_add); |
508 | st= csp_addr(vb,&rrp->addrs[i]); |
509 | } |
510 | } |
511 | return adns_s_ok; |
512 | } |
513 | |
514 | static adns_status cs_hostaddr(vbuf *vb, const void *datap) { |
515 | const adns_rr_hostaddr *rrp= datap; |
516 | |
517 | return csp_hostaddr(vb,rrp); |
518 | } |
519 | |
14180727 |
520 | /* |
521 | * _mx_raw (pa,di) |
522 | */ |
26eb6bdc |
523 | |
14180727 |
524 | static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, int max, void *datap) { |
525 | const byte *dgram= pai->dgram; |
526 | adns_rr_intstr *rrp= datap; |
527 | adns_status st; |
528 | int pref; |
26eb6bdc |
529 | |
14180727 |
530 | if (cbyte+2 > max) return adns_s_invaliddata; |
531 | GET_W(cbyte,pref); |
532 | rrp->i= pref; |
533 | st= pap_domain(pai, &cbyte, max, &rrp->str, |
534 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
535 | if (st) return st; |
26eb6bdc |
536 | |
14180727 |
537 | if (cbyte != max) return adns_s_invaliddata; |
538 | return adns_s_ok; |
539 | } |
26eb6bdc |
540 | |
14180727 |
541 | static int di_mx_raw(const void *datap_a, const void *datap_b) { |
542 | const adns_rr_intstr *ap= datap_a, *bp= datap_b; |
543 | |
544 | if (ap->i < bp->i) return 0; |
545 | if (ap->i > bp->i) return 1; |
546 | return 0; |
26eb6bdc |
547 | } |
548 | |
14180727 |
549 | /* |
550 | * _mx (pa,di) |
551 | */ |
26eb6bdc |
552 | |
14180727 |
553 | static adns_status pa_mx(const parseinfo *pai, int cbyte, int max, void *datap) { |
554 | const byte *dgram= pai->dgram; |
555 | adns_rr_inthostaddr *rrp= datap; |
556 | adns_status st; |
557 | int pref; |
558 | |
559 | if (cbyte+2 > max) return adns_s_invaliddata; |
560 | GET_W(cbyte,pref); |
561 | rrp->i= pref; |
562 | st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); |
563 | if (st) return st; |
564 | |
565 | if (cbyte != max) return adns_s_invaliddata; |
566 | return adns_s_ok; |
567 | } |
568 | |
569 | static int di_mx(const void *datap_a, const void *datap_b) { |
570 | const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b; |
571 | |
572 | if (ap->i < bp->i) return 0; |
573 | if (ap->i > bp->i) return 1; |
574 | return dip_hostaddr(&ap->ha,&bp->ha); |
26eb6bdc |
575 | } |
576 | |
14180727 |
577 | /* |
578 | * _inthostaddr (mf,cs) |
579 | */ |
580 | |
26eb6bdc |
581 | static void mf_inthostaddr(adns_query qu, void *datap) { |
582 | adns_rr_inthostaddr *rrp= datap; |
583 | |
584 | mfp_hostaddr(qu,&rrp->ha); |
585 | } |
586 | |
14180727 |
587 | static adns_status cs_inthostaddr(vbuf *vb, const void *datap) { |
588 | const adns_rr_inthostaddr *rrp= datap; |
589 | char buf[10]; |
f2ad23ee |
590 | |
14180727 |
591 | sprintf(buf,"%u ",rrp->i); |
592 | CSP_ADDSTR(buf); |
593 | |
594 | return csp_hostaddr(vb,&rrp->ha); |
cfdca685 |
595 | } |
596 | |
14180727 |
597 | /* |
cd1bde2f |
598 | * _ptr (pa, +icb_ptr) |
599 | */ |
600 | |
601 | static void icb_ptr(adns_query parent, adns_query child) { |
602 | adns_answer *cans= child->answer; |
603 | const adns_rr_addr *queried, *found; |
604 | int i; |
605 | |
606 | if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) { |
607 | adns__query_fail(parent,adns_s_inconsistent); |
608 | return; |
609 | } else if (cans->status) { |
610 | adns__query_fail(parent,cans->status); |
611 | return; |
612 | } |
613 | |
614 | queried= &parent->ctx.info.ptr_parent_addr; |
615 | for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) { |
616 | if (queried->len == found->len && |
617 | !memcmp(&queried->addr,&found->addr,queried->len)) { |
618 | if (!parent->children.head) adns__query_done(parent); |
619 | return; |
620 | } |
621 | } |
622 | |
623 | adns__query_fail(parent,adns_s_inconsistent); |
624 | } |
625 | |
626 | static adns_status pa_ptr(const parseinfo *pai, int dmstart, int max, void *datap) { |
627 | static const char *(expectdomain[])= { DNS_INADDR_ARPA }; |
628 | |
629 | char **rrp= datap; |
630 | adns_status st; |
631 | adns_rr_addr *ap; |
632 | findlabel_state fls; |
633 | char *ep; |
634 | byte ipv[4]; |
635 | char labbuf[4]; |
636 | int cbyte, i, lablen, labstart, l, id; |
637 | adns_query nqu; |
638 | qcontext ctx; |
639 | |
640 | cbyte= dmstart; |
641 | st= pap_domain(pai, &cbyte, max, rrp, |
642 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
643 | if (st) return st; |
644 | if (cbyte != max) return adns_s_invaliddata; |
645 | |
646 | ap= &pai->qu->ctx.info.ptr_parent_addr; |
647 | if (!ap->len) { |
648 | adns__findlabel_start(&fls, pai->ads, -1, pai->qu, |
649 | pai->qu->query_dgram, pai->qu->query_dglen, |
650 | pai->qu->query_dglen, DNS_HDRSIZE, 0); |
651 | for (i=0; i<4; i++) { |
652 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); |
9b86645c |
653 | if (lablen<=0 || lablen>3) return adns_s_querydomainwrong; |
cd1bde2f |
654 | memcpy(labbuf, pai->qu->query_dgram + labstart, lablen); labbuf[lablen]= 0; |
9b86645c |
655 | ipv[3-i]= strtoul(labbuf,&ep,10); if (*ep) return adns_s_querydomainwrong; |
cd1bde2f |
656 | if (lablen>1 && pai->qu->query_dgram[labstart]=='0') |
9b86645c |
657 | return adns_s_querydomainwrong; |
cd1bde2f |
658 | } |
659 | for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) { |
660 | st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st); |
661 | l= strlen(expectdomain[i]); |
662 | if (lablen != l || memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l)) |
9b86645c |
663 | return adns_s_querydomainwrong; |
cd1bde2f |
664 | } |
665 | st= adns__findlabel_next(&fls,&lablen,0); assert(!st); |
9b86645c |
666 | if (lablen) return adns_s_querydomainwrong; |
cd1bde2f |
667 | |
668 | ap->len= sizeof(struct sockaddr_in); |
669 | memset(&ap->addr,0,sizeof(ap->addr.inet)); |
670 | ap->addr.inet.sin_family= AF_INET; |
671 | ap->addr.inet.sin_addr.s_addr= |
672 | htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3])); |
673 | } |
674 | |
675 | st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id, |
676 | pai->dgram, pai->dglen, dmstart, |
677 | adns_r_addr, adns_qf_quoteok_query); |
678 | if (st) return st; |
679 | |
680 | ctx.ext= 0; |
681 | ctx.callback= icb_ptr; |
682 | memset(&ctx.info,0,sizeof(ctx.info)); |
683 | st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr), |
684 | &pai->qu->vb, id, |
685 | adns_qf_quoteok_query, pai->now, 0, &ctx); |
686 | if (st) return st; |
687 | |
688 | nqu->parent= pai->qu; |
689 | LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.); |
690 | |
691 | return adns_s_ok; |
692 | } |
693 | |
694 | /* |
61093792 |
695 | * _strpair (mf,cs) |
696 | */ |
697 | |
698 | static void mf_strpair(adns_query qu, void *datap) { |
699 | adns_rr_strpair *rrp= datap; |
700 | |
701 | adns__makefinal_str(qu,&rrp->array[0]); |
702 | adns__makefinal_str(qu,&rrp->array[1]); |
703 | } |
704 | |
705 | static adns_status cs_strpair(vbuf *vb, const void *datap) { |
706 | const adns_rr_strpair *rrp= datap; |
707 | adns_status st; |
708 | |
709 | st= csp_qstring(vb,rrp->array[0]); if (st) return st; |
710 | CSP_ADDSTR(" "); |
711 | st= csp_qstring(vb,rrp->array[1]); if (st) return st; |
712 | |
713 | return adns_s_ok; |
714 | } |
715 | |
716 | /* |
717 | * _intstrpair (mf,cs) |
718 | */ |
719 | |
720 | static void mf_intstrpair(adns_query qu, void *datap) { |
721 | adns_rr_intstrpair *rrp= datap; |
722 | |
723 | adns__makefinal_str(qu,&rrp->array[0].str); |
724 | adns__makefinal_str(qu,&rrp->array[1].str); |
725 | } |
726 | |
727 | static adns_status cs_intstrpair(vbuf *vb, const void *datap) { |
728 | const adns_rr_intstrpair *rrp= datap; |
729 | adns_status st; |
730 | |
731 | st= csp_intstr(vb,&rrp->array[0]); if (st) return st; |
732 | CSP_ADDSTR(" "); |
733 | st= csp_intstr(vb,&rrp->array[1]); if (st) return st; |
734 | |
735 | return adns_s_ok; |
736 | } |
737 | |
738 | /* |
739 | * _hinfo (pa) |
740 | */ |
741 | |
742 | static adns_status pa_hinfo(const parseinfo *pai, int cbyte, int max, void *datap) { |
743 | adns_rr_intstrpair *rrp= datap; |
744 | adns_status st; |
745 | int i; |
746 | |
747 | for (i=0; i<2; i++) { |
748 | st= pap_string(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str); |
749 | if (st) return st; |
750 | } |
751 | |
752 | if (cbyte != max) return adns_s_invaliddata; |
753 | |
754 | return adns_s_ok; |
755 | } |
756 | |
757 | /* |
758 | * _mailbox (pap) |
759 | */ |
760 | |
761 | static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max, |
762 | char **mb_r) { |
763 | return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok); |
764 | /* fixme: mailbox quoting */ |
765 | } |
766 | |
767 | /* |
768 | * _rp (pa) |
769 | */ |
770 | |
771 | static adns_status pa_rp(const parseinfo *pai, int cbyte, int max, void *datap) { |
772 | adns_rr_strpair *rrp= datap; |
773 | adns_status st; |
774 | |
775 | st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]); |
776 | if (st) return st; |
777 | |
778 | st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok); |
779 | if (st) return st; |
780 | |
781 | if (cbyte != max) return adns_s_invaliddata; |
782 | return adns_s_ok; |
783 | } |
784 | |
785 | /* |
786 | * _soa (pa,mf,cs) |
787 | */ |
788 | |
789 | static adns_status pa_soa(const parseinfo *pai, int cbyte, int max, void *datap) { |
790 | adns_rr_soa *rrp= datap; |
791 | const byte *dgram= pai->dgram; |
792 | adns_status st; |
793 | int msw, lsw, i; |
794 | |
795 | st= pap_domain(pai, &cbyte, max, &rrp->mname, |
796 | pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0); |
797 | if (st) return st; |
798 | |
799 | st= pap_mailbox(pai, &cbyte, max, &rrp->rname); |
800 | if (st) return st; |
801 | |
802 | if (cbyte+20 != max) return adns_s_invaliddata; |
803 | |
804 | for (i=0; i<5; i++) { |
805 | GET_W(cbyte,msw); |
806 | GET_W(cbyte,lsw); |
807 | (&rrp->serial)[i]= (msw<<16) | lsw; |
808 | } |
809 | |
810 | return adns_s_ok; |
811 | } |
812 | |
813 | static void mf_soa(adns_query qu, void *datap) { |
814 | adns_rr_soa *rrp= datap; |
815 | |
816 | adns__makefinal_str(qu,&rrp->mname); |
817 | adns__makefinal_str(qu,&rrp->rname); |
818 | } |
819 | |
820 | static adns_status cs_soa(vbuf *vb, const void *datap) { |
821 | const adns_rr_soa *rrp= datap; |
822 | char buf[20]; |
823 | int i; |
824 | adns_status st; |
825 | |
826 | st= csp_qstring(vb,rrp->mname); if (st) return st; |
827 | CSP_ADDSTR(" "); |
828 | st= csp_qstring(vb,rrp->rname); if (st) return st; |
829 | |
830 | for (i=0; i<5; i++) { |
831 | sprintf(buf," %lu",(&rrp->serial)[i]); |
832 | CSP_ADDSTR(buf); |
833 | } |
834 | |
835 | return adns_s_ok; |
836 | } |
837 | |
838 | /* |
14180727 |
839 | * _flat (mf) |
840 | */ |
841 | |
cfdca685 |
842 | static void mf_flat(adns_query qu, void *data) { } |
843 | |
14180727 |
844 | /* |
845 | * Now the table. |
846 | */ |
847 | |
f2ad23ee |
848 | #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member)) |
1e9efa71 |
849 | |
cfdca685 |
850 | #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb |
851 | #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb |
5c596e4d |
852 | |
14180727 |
853 | #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer) \ |
854 | { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_##memb, cs_##memb, parser, comparer } |
855 | #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer) \ |
856 | { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_flat, cs_##memb, parser, comparer } |
5c596e4d |
857 | |
858 | static const typeinfo typeinfos[] = { |
14180727 |
859 | /* Must be in ascending order of rrtype ! */ |
860 | /* mem-mgmt code rrt fmt member parser comparer */ |
26eb6bdc |
861 | |
14180727 |
862 | FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr ), |
863 | DEEP_TYPE(ns_raw, "NS", "raw", str, pa_host_raw, 0 ), |
864 | DEEP_TYPE(cname, "CNAME", 0, str, pa_host_raw, 0 ), |
14180727 |
865 | DEEP_TYPE(soa_raw, "SOA", "raw", soa, pa_soa, 0 ), |
14180727 |
866 | DEEP_TYPE(ptr_raw, "PTR", "raw", str, pa_host_raw, 0 ), |
61093792 |
867 | DEEP_TYPE(hinfo, "HINFO", 0, intstrpair, pa_hinfo, 0 ), |
14180727 |
868 | DEEP_TYPE(mx_raw, "MX", "raw", intstr, pa_mx_raw, di_mx_raw ), |
869 | DEEP_TYPE(txt, "TXT", 0, manyistr, pa_txt, 0 ), |
14180727 |
870 | DEEP_TYPE(rp_raw, "RP", "raw", strpair, pa_rp, 0 ), |
26eb6bdc |
871 | |
14180727 |
872 | FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr ), |
873 | DEEP_TYPE(ns, "NS", "+addr", hostaddr, pa_hostaddr, di_hostaddr ), |
14180727 |
874 | DEEP_TYPE(ptr, "PTR","checked", str, pa_ptr, 0 ), |
14180727 |
875 | DEEP_TYPE(mx, "MX", "+addr", inthostaddr, pa_mx, di_mx ), |
26eb6bdc |
876 | |
61093792 |
877 | DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0 ), |
878 | DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0 ), |
5c596e4d |
879 | }; |
880 | |
c9afe7bb |
881 | const typeinfo *adns__findtype(adns_rrtype type) { |
882 | const typeinfo *begin, *end, *mid; |
5c596e4d |
883 | |
884 | begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo)); |
885 | |
886 | while (begin < end) { |
887 | mid= begin + ((end-begin)>>1); |
888 | if (mid->type == type) return mid; |
889 | if (type > mid->type) begin= mid+1; |
890 | else end= mid; |
891 | } |
892 | return 0; |
893 | } |