1 3e0d8fb3 2005-12-27 devnull #include <u.h>
2 3e0d8fb3 2005-12-27 devnull #include <libc.h>
3 3e0d8fb3 2005-12-27 devnull #include <bio.h>
4 3e0d8fb3 2005-12-27 devnull #include <ndb.h>
5 3e0d8fb3 2005-12-27 devnull #include <ip.h>
6 3e0d8fb3 2005-12-27 devnull #include "dns.h"
8 3e0d8fb3 2005-12-27 devnull static Ndb *db;
10 3e0d8fb3 2005-12-27 devnull static RR* dblookup1(char*, int, int, int);
11 3e0d8fb3 2005-12-27 devnull static RR* addrrr(Ndbtuple*, Ndbtuple*);
12 3e0d8fb3 2005-12-27 devnull static RR* nsrr(Ndbtuple*, Ndbtuple*);
13 3e0d8fb3 2005-12-27 devnull static RR* cnamerr(Ndbtuple*, Ndbtuple*);
14 3e0d8fb3 2005-12-27 devnull static RR* mxrr(Ndbtuple*, Ndbtuple*);
15 3e0d8fb3 2005-12-27 devnull static RR* soarr(Ndbtuple*, Ndbtuple*);
16 3e0d8fb3 2005-12-27 devnull static RR* ptrrr(Ndbtuple*, Ndbtuple*);
17 3e0d8fb3 2005-12-27 devnull static Ndbtuple* look(Ndbtuple*, Ndbtuple*, char*);
18 3e0d8fb3 2005-12-27 devnull static RR* doaxfr(Ndb*, char*);
19 3e0d8fb3 2005-12-27 devnull static RR* nullrr(Ndbtuple *entry, Ndbtuple *pair);
20 3e0d8fb3 2005-12-27 devnull static RR* txtrr(Ndbtuple *entry, Ndbtuple *pair);
21 3e0d8fb3 2005-12-27 devnull static Lock dblock;
22 3e0d8fb3 2005-12-27 devnull static void createptrs(void);
24 3e0d8fb3 2005-12-27 devnull static int implemented[Tall] =
27 226d80b8 2006-04-01 devnull /* Ta */ 1,
28 226d80b8 2006-04-01 devnull /* Tns */ 1,
31 226d80b8 2006-04-01 devnull /* Tcname */ 1,
32 226d80b8 2006-04-01 devnull /* Tsoa */ 1,
36 226d80b8 2006-04-01 devnull /* Tnull */ 1,
38 226d80b8 2006-04-01 devnull /* Tptr */ 1,
41 226d80b8 2006-04-01 devnull /* Tmx */ 1,
42 226d80b8 2006-04-01 devnull /* Ttxt */ 1
45 3e0d8fb3 2005-12-27 devnull static void
46 3e0d8fb3 2005-12-27 devnull nstrcpy(char *to, char *from, int len)
48 3e0d8fb3 2005-12-27 devnull strncpy(to, from, len);
49 3e0d8fb3 2005-12-27 devnull to[len-1] = 0;
53 3e0d8fb3 2005-12-27 devnull opendatabase(void)
55 3e0d8fb3 2005-12-27 devnull char buf[256];
56 3e0d8fb3 2005-12-27 devnull Ndb *xdb;
58 3e0d8fb3 2005-12-27 devnull if(db == nil){
59 3e0d8fb3 2005-12-27 devnull snprint(buf, sizeof(buf), "%s/ndb", mntpt);
60 3e0d8fb3 2005-12-27 devnull xdb = ndbopen(dbfile);
61 3e0d8fb3 2005-12-27 devnull if(xdb != nil)
62 3e0d8fb3 2005-12-27 devnull xdb->nohash = 1;
63 3e0d8fb3 2005-12-27 devnull db = ndbcat(ndbopen(buf), xdb);
65 3e0d8fb3 2005-12-27 devnull if(db == nil)
66 3e0d8fb3 2005-12-27 devnull return -1;
68 3e0d8fb3 2005-12-27 devnull return 0;
72 3e0d8fb3 2005-12-27 devnull * lookup an RR in the network database, look for matches
73 3e0d8fb3 2005-12-27 devnull * against both the domain name and the wildcarded domain name.
75 3e0d8fb3 2005-12-27 devnull * the lock makes sure only one process can be accessing the data
76 3e0d8fb3 2005-12-27 devnull * base at a time. This is important since there's a lot of
77 3e0d8fb3 2005-12-27 devnull * shared state there.
79 3e0d8fb3 2005-12-27 devnull * e.g. for x.research.bell-labs.com, first look for a match against
80 3e0d8fb3 2005-12-27 devnull * the x.research.bell-labs.com. If nothing matches, try *.research.bell-labs.com.
83 3e0d8fb3 2005-12-27 devnull dblookup(char *name, int class, int type, int auth, int ttl)
85 3e0d8fb3 2005-12-27 devnull RR *rp, *tp;
86 3e0d8fb3 2005-12-27 devnull char buf[256];
87 3e0d8fb3 2005-12-27 devnull char *wild, *cp;
88 3e0d8fb3 2005-12-27 devnull DN *dp, *ndp;
91 3e0d8fb3 2005-12-27 devnull /* so far only internet lookups are implemented */
92 3e0d8fb3 2005-12-27 devnull if(class != Cin)
93 3e0d8fb3 2005-12-27 devnull return 0;
95 3e0d8fb3 2005-12-27 devnull err = Rname;
97 3e0d8fb3 2005-12-27 devnull if(type == Tall){
99 3e0d8fb3 2005-12-27 devnull for (type = Ta; type < Tall; type++)
100 3e0d8fb3 2005-12-27 devnull if(implemented[type])
101 3e0d8fb3 2005-12-27 devnull rrcat(&rp, dblookup(name, class, type, auth, ttl));
102 3e0d8fb3 2005-12-27 devnull return rp;
105 3e0d8fb3 2005-12-27 devnull lock(&dblock);
106 3e0d8fb3 2005-12-27 devnull dp = dnlookup(name, class, 1);
107 3e0d8fb3 2005-12-27 devnull if(opendatabase() < 0)
108 3e0d8fb3 2005-12-27 devnull goto out;
109 3e0d8fb3 2005-12-27 devnull if(dp->rr)
110 3e0d8fb3 2005-12-27 devnull err = 0;
112 3e0d8fb3 2005-12-27 devnull /* first try the given name */
114 3e0d8fb3 2005-12-27 devnull if(cachedb)
115 3e0d8fb3 2005-12-27 devnull rp = rrlookup(dp, type, NOneg);
117 3e0d8fb3 2005-12-27 devnull rp = dblookup1(name, type, auth, ttl);
119 3e0d8fb3 2005-12-27 devnull goto out;
121 3e0d8fb3 2005-12-27 devnull /* try lower case version */
122 3e0d8fb3 2005-12-27 devnull for(cp = name; *cp; cp++)
123 df5d363d 2006-03-03 devnull *cp = tolower((uchar)*cp);
124 3e0d8fb3 2005-12-27 devnull if(cachedb)
125 3e0d8fb3 2005-12-27 devnull rp = rrlookup(dp, type, NOneg);
127 3e0d8fb3 2005-12-27 devnull rp = dblookup1(name, type, auth, ttl);
129 3e0d8fb3 2005-12-27 devnull goto out;
131 3e0d8fb3 2005-12-27 devnull /* walk the domain name trying the wildcard '*' at each position */
132 3e0d8fb3 2005-12-27 devnull for(wild = strchr(name, '.'); wild; wild = strchr(wild+1, '.')){
133 3e0d8fb3 2005-12-27 devnull snprint(buf, sizeof(buf), "*%s", wild);
134 3e0d8fb3 2005-12-27 devnull ndp = dnlookup(buf, class, 1);
135 3e0d8fb3 2005-12-27 devnull if(ndp->rr)
136 3e0d8fb3 2005-12-27 devnull err = 0;
137 3e0d8fb3 2005-12-27 devnull if(cachedb)
138 3e0d8fb3 2005-12-27 devnull rp = rrlookup(ndp, type, NOneg);
140 3e0d8fb3 2005-12-27 devnull rp = dblookup1(buf, type, auth, ttl);
145 3e0d8fb3 2005-12-27 devnull /* add owner to uncached records */
147 3e0d8fb3 2005-12-27 devnull for(tp = rp; tp; tp = tp->next)
148 3e0d8fb3 2005-12-27 devnull tp->owner = dp;
149 3e0d8fb3 2005-12-27 devnull } else {
150 3e0d8fb3 2005-12-27 devnull /* don't call it non-existent if it's not ours */
151 3e0d8fb3 2005-12-27 devnull if(err == Rname && !inmyarea(name))
152 3e0d8fb3 2005-12-27 devnull err = Rserver;
153 3e0d8fb3 2005-12-27 devnull dp->nonexistent = err;
156 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
157 3e0d8fb3 2005-12-27 devnull return rp;
161 3e0d8fb3 2005-12-27 devnull * lookup an RR in the network database
163 3e0d8fb3 2005-12-27 devnull static RR*
164 3e0d8fb3 2005-12-27 devnull dblookup1(char *name, int type, int auth, int ttl)
166 3e0d8fb3 2005-12-27 devnull Ndbtuple *t, *nt;
167 3e0d8fb3 2005-12-27 devnull RR *rp, *list, **l;
169 3e0d8fb3 2005-12-27 devnull char dname[Domlen];
170 3e0d8fb3 2005-12-27 devnull char *attr;
172 3e0d8fb3 2005-12-27 devnull RR *(*f)(Ndbtuple*, Ndbtuple*);
173 3e0d8fb3 2005-12-27 devnull int found, x;
176 3e0d8fb3 2005-12-27 devnull switch(type){
177 3e0d8fb3 2005-12-27 devnull case Tptr:
178 3e0d8fb3 2005-12-27 devnull attr = "ptr";
179 3e0d8fb3 2005-12-27 devnull f = ptrrr;
181 3e0d8fb3 2005-12-27 devnull case Ta:
182 3e0d8fb3 2005-12-27 devnull attr = "ip";
183 3e0d8fb3 2005-12-27 devnull f = addrrr;
185 3e0d8fb3 2005-12-27 devnull case Tnull:
186 3e0d8fb3 2005-12-27 devnull attr = "nullrr";
187 3e0d8fb3 2005-12-27 devnull f = nullrr;
189 3e0d8fb3 2005-12-27 devnull case Tns:
190 3e0d8fb3 2005-12-27 devnull attr = "ns";
191 3e0d8fb3 2005-12-27 devnull f = nsrr;
193 3e0d8fb3 2005-12-27 devnull case Tsoa:
194 3e0d8fb3 2005-12-27 devnull attr = "soa";
195 3e0d8fb3 2005-12-27 devnull f = soarr;
197 3e0d8fb3 2005-12-27 devnull case Tmx:
198 3e0d8fb3 2005-12-27 devnull attr = "mx";
199 3e0d8fb3 2005-12-27 devnull f = mxrr;
201 3e0d8fb3 2005-12-27 devnull case Tcname:
202 3e0d8fb3 2005-12-27 devnull attr = "cname";
203 3e0d8fb3 2005-12-27 devnull f = cnamerr;
205 3e0d8fb3 2005-12-27 devnull case Taxfr:
206 3e0d8fb3 2005-12-27 devnull case Tixfr:
207 3e0d8fb3 2005-12-27 devnull return doaxfr(db, name);
208 3e0d8fb3 2005-12-27 devnull default:
209 3e0d8fb3 2005-12-27 devnull return nil;
213 3e0d8fb3 2005-12-27 devnull * find a matching entry in the database
215 3e0d8fb3 2005-12-27 devnull free(ndbgetvalue(db, &s, "dom", name, attr, &t));
218 3e0d8fb3 2005-12-27 devnull * hack for local names
220 3e0d8fb3 2005-12-27 devnull if(t == 0 && strchr(name, '.') == 0)
221 3e0d8fb3 2005-12-27 devnull free(ndbgetvalue(db, &s, "sys", name, attr, &t));
222 3e0d8fb3 2005-12-27 devnull if(t == 0)
223 3e0d8fb3 2005-12-27 devnull return nil;
225 3e0d8fb3 2005-12-27 devnull /* search whole entry for default domain name */
226 3e0d8fb3 2005-12-27 devnull strncpy(dname, name, sizeof dname);
227 3e0d8fb3 2005-12-27 devnull for(nt = t; nt; nt = nt->entry)
228 3e0d8fb3 2005-12-27 devnull if(strcmp(nt->attr, "dom") == 0){
229 3e0d8fb3 2005-12-27 devnull nstrcpy(dname, nt->val, sizeof dname);
233 3e0d8fb3 2005-12-27 devnull /* ttl is maximum of soa minttl and entry's ttl ala rfc883 */
234 3e0d8fb3 2005-12-27 devnull nt = look(t, s.t, "ttl");
236 3e0d8fb3 2005-12-27 devnull x = atoi(nt->val);
237 3e0d8fb3 2005-12-27 devnull if(x > ttl)
238 3e0d8fb3 2005-12-27 devnull ttl = x;
241 3e0d8fb3 2005-12-27 devnull /* default ttl is one day */
242 3e0d8fb3 2005-12-27 devnull if(ttl < 0)
243 3e0d8fb3 2005-12-27 devnull ttl = DEFTTL;
246 3e0d8fb3 2005-12-27 devnull * The database has 2 levels of precedence; line and entry.
247 3e0d8fb3 2005-12-27 devnull * Pairs on the same line bind tighter than pairs in the
248 3e0d8fb3 2005-12-27 devnull * same entry, so we search the line first.
250 3e0d8fb3 2005-12-27 devnull found = 0;
251 3e0d8fb3 2005-12-27 devnull list = 0;
252 3e0d8fb3 2005-12-27 devnull l = &list;
253 3e0d8fb3 2005-12-27 devnull for(nt = s.t;; ){
254 3e0d8fb3 2005-12-27 devnull if(found == 0 && strcmp(nt->attr, "dom") == 0){
255 3e0d8fb3 2005-12-27 devnull nstrcpy(dname, nt->val, sizeof dname);
256 3e0d8fb3 2005-12-27 devnull found = 1;
258 3e0d8fb3 2005-12-27 devnull if(cistrcmp(attr, nt->attr) == 0){
259 3e0d8fb3 2005-12-27 devnull rp = (*f)(t, nt);
260 3e0d8fb3 2005-12-27 devnull rp->auth = auth;
261 3e0d8fb3 2005-12-27 devnull rp->db = 1;
263 3e0d8fb3 2005-12-27 devnull rp->ttl = ttl;
264 3e0d8fb3 2005-12-27 devnull if(dp == 0)
265 3e0d8fb3 2005-12-27 devnull dp = dnlookup(dname, Cin, 1);
266 3e0d8fb3 2005-12-27 devnull rp->owner = dp;
267 3e0d8fb3 2005-12-27 devnull *l = rp;
268 3e0d8fb3 2005-12-27 devnull l = &rp->next;
269 3e0d8fb3 2005-12-27 devnull nt->ptr = 1;
271 3e0d8fb3 2005-12-27 devnull nt = nt->line;
272 3e0d8fb3 2005-12-27 devnull if(nt == s.t)
276 3e0d8fb3 2005-12-27 devnull /* search whole entry */
277 3e0d8fb3 2005-12-27 devnull for(nt = t; nt; nt = nt->entry)
278 3e0d8fb3 2005-12-27 devnull if(nt->ptr == 0 && cistrcmp(attr, nt->attr) == 0){
279 3e0d8fb3 2005-12-27 devnull rp = (*f)(t, nt);
280 3e0d8fb3 2005-12-27 devnull rp->db = 1;
282 3e0d8fb3 2005-12-27 devnull rp->ttl = ttl;
283 3e0d8fb3 2005-12-27 devnull rp->auth = auth;
284 3e0d8fb3 2005-12-27 devnull if(dp == 0)
285 3e0d8fb3 2005-12-27 devnull dp = dnlookup(dname, Cin, 1);
286 3e0d8fb3 2005-12-27 devnull rp->owner = dp;
287 3e0d8fb3 2005-12-27 devnull *l = rp;
288 3e0d8fb3 2005-12-27 devnull l = &rp->next;
290 3e0d8fb3 2005-12-27 devnull ndbfree(t);
292 3e0d8fb3 2005-12-27 devnull return list;
296 3e0d8fb3 2005-12-27 devnull * make various types of resource records from a database entry
298 3e0d8fb3 2005-12-27 devnull static RR*
299 3e0d8fb3 2005-12-27 devnull addrrr(Ndbtuple *entry, Ndbtuple *pair)
302 3e0d8fb3 2005-12-27 devnull uchar addr[IPaddrlen];
304 3e0d8fb3 2005-12-27 devnull USED(entry);
305 3e0d8fb3 2005-12-27 devnull parseip(addr, pair->val);
306 3e0d8fb3 2005-12-27 devnull if(isv4(addr))
307 3e0d8fb3 2005-12-27 devnull rp = rralloc(Ta);
309 3e0d8fb3 2005-12-27 devnull rp = rralloc(Taaaa);
310 3e0d8fb3 2005-12-27 devnull rp->ip = dnlookup(pair->val, Cin, 1);
311 3e0d8fb3 2005-12-27 devnull return rp;
313 3e0d8fb3 2005-12-27 devnull static RR*
314 3e0d8fb3 2005-12-27 devnull nullrr(Ndbtuple *entry, Ndbtuple *pair)
318 3e0d8fb3 2005-12-27 devnull USED(entry);
319 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tnull);
320 3e0d8fb3 2005-12-27 devnull rp->null->data = (uchar*)estrdup(pair->val);
321 3e0d8fb3 2005-12-27 devnull rp->null->dlen = strlen((char*)rp->null->data);
322 3e0d8fb3 2005-12-27 devnull return rp;
325 3e0d8fb3 2005-12-27 devnull * txt rr strings are at most 255 bytes long. one
326 3e0d8fb3 2005-12-27 devnull * can represent longer strings by multiple concatenated
327 3e0d8fb3 2005-12-27 devnull * <= 255 byte ones.
329 3e0d8fb3 2005-12-27 devnull static RR*
330 3e0d8fb3 2005-12-27 devnull txtrr(Ndbtuple *entry, Ndbtuple *pair)
333 3e0d8fb3 2005-12-27 devnull Txt *t, **l;
334 3e0d8fb3 2005-12-27 devnull int i, len, sofar;
336 3e0d8fb3 2005-12-27 devnull USED(entry);
337 3e0d8fb3 2005-12-27 devnull rp = rralloc(Ttxt);
338 3e0d8fb3 2005-12-27 devnull l = &rp->txt;
339 3e0d8fb3 2005-12-27 devnull rp->txt = nil;
340 3e0d8fb3 2005-12-27 devnull len = strlen(pair->val);
341 3e0d8fb3 2005-12-27 devnull sofar = 0;
342 3e0d8fb3 2005-12-27 devnull while(len > sofar){
343 3e0d8fb3 2005-12-27 devnull t = emalloc(sizeof(*t));
344 3e0d8fb3 2005-12-27 devnull t->next = nil;
346 3e0d8fb3 2005-12-27 devnull i = len-sofar;
347 3e0d8fb3 2005-12-27 devnull if(i > 255)
348 3e0d8fb3 2005-12-27 devnull i = 255;
350 3e0d8fb3 2005-12-27 devnull t->p = emalloc(i+1);
351 3e0d8fb3 2005-12-27 devnull memmove(t->p, pair->val+sofar, i);
352 3e0d8fb3 2005-12-27 devnull t->p[i] = 0;
353 3e0d8fb3 2005-12-27 devnull sofar += i;
356 3e0d8fb3 2005-12-27 devnull l = &t->next;
358 3e0d8fb3 2005-12-27 devnull return rp;
360 3e0d8fb3 2005-12-27 devnull static RR*
361 3e0d8fb3 2005-12-27 devnull cnamerr(Ndbtuple *entry, Ndbtuple *pair)
365 3e0d8fb3 2005-12-27 devnull USED(entry);
366 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tcname);
367 3e0d8fb3 2005-12-27 devnull rp->host = dnlookup(pair->val, Cin, 1);
368 3e0d8fb3 2005-12-27 devnull return rp;
370 3e0d8fb3 2005-12-27 devnull static RR*
371 3e0d8fb3 2005-12-27 devnull mxrr(Ndbtuple *entry, Ndbtuple *pair)
373 3e0d8fb3 2005-12-27 devnull RR * rp;
375 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tmx);
376 3e0d8fb3 2005-12-27 devnull rp->host = dnlookup(pair->val, Cin, 1);
377 3e0d8fb3 2005-12-27 devnull pair = look(entry, pair, "pref");
378 3e0d8fb3 2005-12-27 devnull if(pair)
379 3e0d8fb3 2005-12-27 devnull rp->pref = atoi(pair->val);
381 3e0d8fb3 2005-12-27 devnull rp->pref = 1;
382 3e0d8fb3 2005-12-27 devnull return rp;
384 3e0d8fb3 2005-12-27 devnull static RR*
385 3e0d8fb3 2005-12-27 devnull nsrr(Ndbtuple *entry, Ndbtuple *pair)
388 3e0d8fb3 2005-12-27 devnull Ndbtuple *t;
390 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tns);
391 3e0d8fb3 2005-12-27 devnull rp->host = dnlookup(pair->val, Cin, 1);
392 3e0d8fb3 2005-12-27 devnull t = look(entry, pair, "soa");
393 3e0d8fb3 2005-12-27 devnull if(t && t->val[0] == 0)
394 3e0d8fb3 2005-12-27 devnull rp->local = 1;
395 3e0d8fb3 2005-12-27 devnull return rp;
397 3e0d8fb3 2005-12-27 devnull static RR*
398 3e0d8fb3 2005-12-27 devnull ptrrr(Ndbtuple *entry, Ndbtuple *pair)
402 3e0d8fb3 2005-12-27 devnull USED(entry);
403 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tns);
404 3e0d8fb3 2005-12-27 devnull rp->ptr = dnlookup(pair->val, Cin, 1);
405 3e0d8fb3 2005-12-27 devnull return rp;
407 3e0d8fb3 2005-12-27 devnull static RR*
408 3e0d8fb3 2005-12-27 devnull soarr(Ndbtuple *entry, Ndbtuple *pair)
411 3e0d8fb3 2005-12-27 devnull Ndbtuple *ns, *mb, *t;
412 3e0d8fb3 2005-12-27 devnull char mailbox[Domlen];
413 3e0d8fb3 2005-12-27 devnull Ndb *ndb;
414 3e0d8fb3 2005-12-27 devnull char *p;
416 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tsoa);
417 3e0d8fb3 2005-12-27 devnull rp->soa->serial = 1;
418 3e0d8fb3 2005-12-27 devnull for(ndb = db; ndb; ndb = ndb->next)
419 3e0d8fb3 2005-12-27 devnull if(ndb->mtime > rp->soa->serial)
420 3e0d8fb3 2005-12-27 devnull rp->soa->serial = ndb->mtime;
421 3e0d8fb3 2005-12-27 devnull rp->soa->refresh = Day;
422 3e0d8fb3 2005-12-27 devnull rp->soa->retry = Hour;
423 3e0d8fb3 2005-12-27 devnull rp->soa->expire = Day;
424 3e0d8fb3 2005-12-27 devnull rp->soa->minttl = Day;
425 3e0d8fb3 2005-12-27 devnull t = look(entry, pair, "ttl");
427 3e0d8fb3 2005-12-27 devnull rp->soa->minttl = atoi(t->val);
428 3e0d8fb3 2005-12-27 devnull t = look(entry, pair, "refresh");
430 3e0d8fb3 2005-12-27 devnull rp->soa->refresh = atoi(t->val);
431 3e0d8fb3 2005-12-27 devnull t = look(entry, pair, "serial");
433 3e0d8fb3 2005-12-27 devnull rp->soa->serial = strtoul(t->val, 0, 10);
435 3e0d8fb3 2005-12-27 devnull ns = look(entry, pair, "ns");
436 3e0d8fb3 2005-12-27 devnull if(ns == 0)
437 3e0d8fb3 2005-12-27 devnull ns = look(entry, pair, "dom");
438 3e0d8fb3 2005-12-27 devnull rp->host = dnlookup(ns->val, Cin, 1);
440 3e0d8fb3 2005-12-27 devnull /* accept all of:
441 3e0d8fb3 2005-12-27 devnull * mbox=person
442 3e0d8fb3 2005-12-27 devnull * mbox=person@machine.dom
443 3e0d8fb3 2005-12-27 devnull * mbox=person.machine.dom
445 3e0d8fb3 2005-12-27 devnull mb = look(entry, pair, "mbox");
446 3e0d8fb3 2005-12-27 devnull if(mb == nil)
447 3e0d8fb3 2005-12-27 devnull mb = look(entry, pair, "mb");
449 3e0d8fb3 2005-12-27 devnull if(strchr(mb->val, '.')) {
450 3e0d8fb3 2005-12-27 devnull p = strchr(mb->val, '@');
451 3e0d8fb3 2005-12-27 devnull if(p != nil)
452 3e0d8fb3 2005-12-27 devnull *p = '.';
453 3e0d8fb3 2005-12-27 devnull rp->rmb = dnlookup(mb->val, Cin, 1);
454 3e0d8fb3 2005-12-27 devnull } else {
455 3e0d8fb3 2005-12-27 devnull snprint(mailbox, sizeof(mailbox), "%s.%s",
456 3e0d8fb3 2005-12-27 devnull mb->val, ns->val);
457 3e0d8fb3 2005-12-27 devnull rp->rmb = dnlookup(mailbox, Cin, 1);
459 3e0d8fb3 2005-12-27 devnull } else {
460 3e0d8fb3 2005-12-27 devnull snprint(mailbox, sizeof(mailbox), "postmaster.%s",
461 3e0d8fb3 2005-12-27 devnull ns->val);
462 3e0d8fb3 2005-12-27 devnull rp->rmb = dnlookup(mailbox, Cin, 1);
465 3e0d8fb3 2005-12-27 devnull /* hang dns slaves off of the soa. this is
466 3e0d8fb3 2005-12-27 devnull * for managing the area.
468 3e0d8fb3 2005-12-27 devnull for(t = entry; t != nil; t = t->entry)
469 3e0d8fb3 2005-12-27 devnull if(strcmp(t->attr, "dnsslave") == 0)
470 3e0d8fb3 2005-12-27 devnull addserver(&rp->soa->slaves, t->val);
472 3e0d8fb3 2005-12-27 devnull return rp;
476 3e0d8fb3 2005-12-27 devnull * Look for a pair with the given attribute. look first on the same line,
477 3e0d8fb3 2005-12-27 devnull * then in the whole entry.
479 3e0d8fb3 2005-12-27 devnull static Ndbtuple*
480 3e0d8fb3 2005-12-27 devnull look(Ndbtuple *entry, Ndbtuple *line, char *attr)
482 3e0d8fb3 2005-12-27 devnull Ndbtuple *nt;
484 3e0d8fb3 2005-12-27 devnull /* first look on same line (closer binding) */
485 3e0d8fb3 2005-12-27 devnull for(nt = line;;){
486 3e0d8fb3 2005-12-27 devnull if(cistrcmp(attr, nt->attr) == 0)
487 3e0d8fb3 2005-12-27 devnull return nt;
488 3e0d8fb3 2005-12-27 devnull nt = nt->line;
489 3e0d8fb3 2005-12-27 devnull if(nt == line)
492 3e0d8fb3 2005-12-27 devnull /* search whole tuple */
493 3e0d8fb3 2005-12-27 devnull for(nt = entry; nt; nt = nt->entry)
494 3e0d8fb3 2005-12-27 devnull if(cistrcmp(attr, nt->attr) == 0)
495 3e0d8fb3 2005-12-27 devnull return nt;
496 3e0d8fb3 2005-12-27 devnull return 0;
499 3e0d8fb3 2005-12-27 devnull /* these are answered specially by the tcp version */
500 3e0d8fb3 2005-12-27 devnull static RR*
501 3e0d8fb3 2005-12-27 devnull doaxfr(Ndb *db, char *name)
503 3e0d8fb3 2005-12-27 devnull USED(db);
504 3e0d8fb3 2005-12-27 devnull USED(name);
505 3e0d8fb3 2005-12-27 devnull return 0;
510 3e0d8fb3 2005-12-27 devnull * read the all the soa's from the database to determine area's.
511 3e0d8fb3 2005-12-27 devnull * this is only used when we're not caching the database.
513 3e0d8fb3 2005-12-27 devnull static void
514 3e0d8fb3 2005-12-27 devnull dbfile2area(Ndb *db)
516 3e0d8fb3 2005-12-27 devnull Ndbtuple *t;
518 3e0d8fb3 2005-12-27 devnull if(debug)
519 3e0d8fb3 2005-12-27 devnull syslog(0, logfile, "rereading %s", db->file);
520 3e0d8fb3 2005-12-27 devnull Bseek(&db->b, 0, 0);
521 3e0d8fb3 2005-12-27 devnull while(t = ndbparse(db)){
522 3e0d8fb3 2005-12-27 devnull ndbfree(t);
527 3e0d8fb3 2005-12-27 devnull * read the database into the cache
529 3e0d8fb3 2005-12-27 devnull static void
530 3e0d8fb3 2005-12-27 devnull dbpair2cache(DN *dp, Ndbtuple *entry, Ndbtuple *pair)
533 3e0d8fb3 2005-12-27 devnull Ndbtuple *t;
534 3e0d8fb3 2005-12-27 devnull static ulong ord;
537 3e0d8fb3 2005-12-27 devnull if(cistrcmp(pair->attr, "ip") == 0){
538 3e0d8fb3 2005-12-27 devnull dp->ordinal = ord++;
539 3e0d8fb3 2005-12-27 devnull rp = addrrr(entry, pair);
540 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "ns") == 0){
541 3e0d8fb3 2005-12-27 devnull rp = nsrr(entry, pair);
542 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "soa") == 0){
543 3e0d8fb3 2005-12-27 devnull rp = soarr(entry, pair);
544 3e0d8fb3 2005-12-27 devnull addarea(dp, rp, pair);
545 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "mx") == 0){
546 3e0d8fb3 2005-12-27 devnull rp = mxrr(entry, pair);
547 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "cname") == 0){
548 3e0d8fb3 2005-12-27 devnull rp = cnamerr(entry, pair);
549 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "nullrr") == 0){
550 3e0d8fb3 2005-12-27 devnull rp = nullrr(entry, pair);
551 3e0d8fb3 2005-12-27 devnull } else if(cistrcmp(pair->attr, "txtrr") == 0){
552 3e0d8fb3 2005-12-27 devnull rp = txtrr(entry, pair);
555 3e0d8fb3 2005-12-27 devnull if(rp == 0)
558 3e0d8fb3 2005-12-27 devnull rp->owner = dp;
559 3e0d8fb3 2005-12-27 devnull rp->db = 1;
560 3e0d8fb3 2005-12-27 devnull t = look(entry, pair, "ttl");
562 3e0d8fb3 2005-12-27 devnull rp->ttl = atoi(t->val);
563 3e0d8fb3 2005-12-27 devnull rrattach(rp, 0);
565 3e0d8fb3 2005-12-27 devnull static void
566 3e0d8fb3 2005-12-27 devnull dbtuple2cache(Ndbtuple *t)
568 3e0d8fb3 2005-12-27 devnull Ndbtuple *et, *nt;
571 3e0d8fb3 2005-12-27 devnull for(et = t; et; et = et->entry){
572 3e0d8fb3 2005-12-27 devnull if(strcmp(et->attr, "dom") == 0){
573 3e0d8fb3 2005-12-27 devnull dp = dnlookup(et->val, Cin, 1);
575 3e0d8fb3 2005-12-27 devnull /* first same line */
576 3e0d8fb3 2005-12-27 devnull for(nt = et->line; nt != et; nt = nt->line){
577 3e0d8fb3 2005-12-27 devnull dbpair2cache(dp, t, nt);
578 3e0d8fb3 2005-12-27 devnull nt->ptr = 1;
581 3e0d8fb3 2005-12-27 devnull /* then rest of entry */
582 3e0d8fb3 2005-12-27 devnull for(nt = t; nt; nt = nt->entry){
583 3e0d8fb3 2005-12-27 devnull if(nt->ptr == 0)
584 3e0d8fb3 2005-12-27 devnull dbpair2cache(dp, t, nt);
585 3e0d8fb3 2005-12-27 devnull nt->ptr = 0;
590 3e0d8fb3 2005-12-27 devnull static void
591 3e0d8fb3 2005-12-27 devnull dbfile2cache(Ndb *db)
593 3e0d8fb3 2005-12-27 devnull Ndbtuple *t;
595 3e0d8fb3 2005-12-27 devnull if(debug)
596 3e0d8fb3 2005-12-27 devnull syslog(0, logfile, "rereading %s", db->file);
597 3e0d8fb3 2005-12-27 devnull Bseek(&db->b, 0, 0);
598 3e0d8fb3 2005-12-27 devnull while(t = ndbparse(db)){
599 3e0d8fb3 2005-12-27 devnull dbtuple2cache(t);
600 3e0d8fb3 2005-12-27 devnull ndbfree(t);
604 3e0d8fb3 2005-12-27 devnull db2cache(int doit)
606 3e0d8fb3 2005-12-27 devnull Ndb *ndb;
608 3e0d8fb3 2005-12-27 devnull ulong youngest, temp;
609 3e0d8fb3 2005-12-27 devnull static ulong lastcheck;
610 3e0d8fb3 2005-12-27 devnull static ulong lastyoungest;
612 3e0d8fb3 2005-12-27 devnull /* no faster than once every 2 minutes */
613 3e0d8fb3 2005-12-27 devnull if(now < lastcheck + 2*Min && !doit)
616 3e0d8fb3 2005-12-27 devnull refresh_areas(owned);
618 3e0d8fb3 2005-12-27 devnull lock(&dblock);
620 3e0d8fb3 2005-12-27 devnull if(opendatabase() < 0){
621 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
626 3e0d8fb3 2005-12-27 devnull * file may be changing as we are reading it, so loop till
627 3e0d8fb3 2005-12-27 devnull * mod times are consistent.
629 3e0d8fb3 2005-12-27 devnull * we don't use the times in the ndb records because they may
630 3e0d8fb3 2005-12-27 devnull * change outside of refreshing our cached knowledge.
632 3e0d8fb3 2005-12-27 devnull for(;;){
633 3e0d8fb3 2005-12-27 devnull lastcheck = now;
634 3e0d8fb3 2005-12-27 devnull youngest = 0;
635 3e0d8fb3 2005-12-27 devnull for(ndb = db; ndb; ndb = ndb->next){
636 3e0d8fb3 2005-12-27 devnull /* the dirfstat avoids walking the mount table each time */
637 3e0d8fb3 2005-12-27 devnull if((d = dirfstat(Bfildes(&ndb->b))) != nil ||
638 3e0d8fb3 2005-12-27 devnull (d = dirstat(ndb->file)) != nil){
639 3e0d8fb3 2005-12-27 devnull temp = d->mtime; /* ulong vs int crap */
640 3e0d8fb3 2005-12-27 devnull if(temp > youngest)
641 3e0d8fb3 2005-12-27 devnull youngest = temp;
642 3e0d8fb3 2005-12-27 devnull free(d);
645 3e0d8fb3 2005-12-27 devnull if(!doit && youngest == lastyoungest){
646 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
650 3e0d8fb3 2005-12-27 devnull /* forget our area definition */
651 3e0d8fb3 2005-12-27 devnull freearea(&owned);
652 3e0d8fb3 2005-12-27 devnull freearea(&delegated);
654 3e0d8fb3 2005-12-27 devnull /* reopen all the files (to get oldest for time stamp) */
655 3e0d8fb3 2005-12-27 devnull for(ndb = db; ndb; ndb = ndb->next)
656 3e0d8fb3 2005-12-27 devnull ndbreopen(ndb);
658 3e0d8fb3 2005-12-27 devnull if(cachedb){
659 3e0d8fb3 2005-12-27 devnull /* mark all db records as timed out */
660 3e0d8fb3 2005-12-27 devnull dnagedb();
662 3e0d8fb3 2005-12-27 devnull /* read in new entries */
663 3e0d8fb3 2005-12-27 devnull for(ndb = db; ndb; ndb = ndb->next)
664 3e0d8fb3 2005-12-27 devnull dbfile2cache(ndb);
666 3e0d8fb3 2005-12-27 devnull /* mark as authentic anything in our domain */
667 3e0d8fb3 2005-12-27 devnull dnauthdb();
669 3e0d8fb3 2005-12-27 devnull /* remove old entries */
670 3e0d8fb3 2005-12-27 devnull dnageall(1);
671 3e0d8fb3 2005-12-27 devnull } else {
672 3e0d8fb3 2005-12-27 devnull /* read all the soa's to get database defaults */
673 3e0d8fb3 2005-12-27 devnull for(ndb = db; ndb; ndb = ndb->next)
674 3e0d8fb3 2005-12-27 devnull dbfile2area(ndb);
677 3e0d8fb3 2005-12-27 devnull doit = 0;
678 3e0d8fb3 2005-12-27 devnull lastyoungest = youngest;
679 3e0d8fb3 2005-12-27 devnull createptrs();
682 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
685 3e0d8fb3 2005-12-27 devnull extern uchar ipaddr[IPaddrlen];
688 3e0d8fb3 2005-12-27 devnull * get all my xxx
690 3e0d8fb3 2005-12-27 devnull Ndbtuple*
691 3e0d8fb3 2005-12-27 devnull lookupinfo(char *attr)
693 3e0d8fb3 2005-12-27 devnull char buf[64];
694 3e0d8fb3 2005-12-27 devnull char *a[2];
695 3e0d8fb3 2005-12-27 devnull static Ndbtuple *t;
697 3e0d8fb3 2005-12-27 devnull snprint(buf, sizeof buf, "%I", ipaddr);
698 3e0d8fb3 2005-12-27 devnull a[0] = attr;
700 3e0d8fb3 2005-12-27 devnull lock(&dblock);
701 3e0d8fb3 2005-12-27 devnull if(opendatabase() < 0){
702 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
703 3e0d8fb3 2005-12-27 devnull return nil;
705 3e0d8fb3 2005-12-27 devnull t = ndbipinfo(db, "ip", buf, a, 1);
706 3e0d8fb3 2005-12-27 devnull unlock(&dblock);
707 3e0d8fb3 2005-12-27 devnull return t;
710 3e0d8fb3 2005-12-27 devnull char *localservers = "local#dns#servers";
711 3e0d8fb3 2005-12-27 devnull char *localserverprefix = "local#dns#server";
714 3e0d8fb3 2005-12-27 devnull * return non-zero is this is a bad delegation
717 3e0d8fb3 2005-12-27 devnull baddelegation(RR *rp, RR *nsrp, uchar *addr)
719 3e0d8fb3 2005-12-27 devnull Ndbtuple *nt;
720 3e0d8fb3 2005-12-27 devnull static Ndbtuple *t;
722 3e0d8fb3 2005-12-27 devnull if(t == nil)
723 3e0d8fb3 2005-12-27 devnull t = lookupinfo("dom");
724 3e0d8fb3 2005-12-27 devnull if(t == nil)
725 3e0d8fb3 2005-12-27 devnull return 0;
727 3e0d8fb3 2005-12-27 devnull for(; rp; rp = rp->next){
728 3e0d8fb3 2005-12-27 devnull if(rp->type != Tns)
729 3e0d8fb3 2005-12-27 devnull continue;
731 3e0d8fb3 2005-12-27 devnull /* see if delegation is looping */
732 3e0d8fb3 2005-12-27 devnull if(nsrp)
733 3e0d8fb3 2005-12-27 devnull if(rp->owner != nsrp->owner)
734 3e0d8fb3 2005-12-27 devnull if(subsume(rp->owner->name, nsrp->owner->name) &&
735 3e0d8fb3 2005-12-27 devnull strcmp(nsrp->owner->name, localservers) != 0){
736 3e0d8fb3 2005-12-27 devnull syslog(0, logfile, "delegation loop %R -> %R from %I", nsrp, rp, addr);
737 3e0d8fb3 2005-12-27 devnull return 1;
740 3e0d8fb3 2005-12-27 devnull /* see if delegating to us what we don't own */
741 3e0d8fb3 2005-12-27 devnull for(nt = t; nt != nil; nt = nt->entry)
742 3e0d8fb3 2005-12-27 devnull if(rp->host && cistrcmp(rp->host->name, nt->val) == 0)
744 3e0d8fb3 2005-12-27 devnull if(nt != nil && !inmyarea(rp->owner->name)){
745 3e0d8fb3 2005-12-27 devnull syslog(0, logfile, "bad delegation %R from %I", rp, addr);
746 3e0d8fb3 2005-12-27 devnull return 1;
750 3e0d8fb3 2005-12-27 devnull return 0;
753 3e0d8fb3 2005-12-27 devnull static void
754 3e0d8fb3 2005-12-27 devnull addlocaldnsserver(DN *dp, int class, char *ipaddr, int i)
756 3e0d8fb3 2005-12-27 devnull DN *nsdp;
758 3e0d8fb3 2005-12-27 devnull char buf[32];
760 3e0d8fb3 2005-12-27 devnull /* ns record for name server, make up an impossible name */
761 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tns);
762 3e0d8fb3 2005-12-27 devnull snprint(buf, sizeof(buf), "%s%d", localserverprefix, i);
763 3e0d8fb3 2005-12-27 devnull nsdp = dnlookup(buf, class, 1);
764 3e0d8fb3 2005-12-27 devnull rp->host = nsdp;
765 3e0d8fb3 2005-12-27 devnull rp->owner = dp;
766 3e0d8fb3 2005-12-27 devnull rp->local = 1;
767 3e0d8fb3 2005-12-27 devnull rp->db = 1;
768 3e0d8fb3 2005-12-27 devnull rp->ttl = 10*Min;
769 3e0d8fb3 2005-12-27 devnull rrattach(rp, 1);
771 3e0d8fb3 2005-12-27 devnull print("dns %s\n", ipaddr);
772 3e0d8fb3 2005-12-27 devnull /* A record */
773 3e0d8fb3 2005-12-27 devnull rp = rralloc(Ta);
774 3e0d8fb3 2005-12-27 devnull rp->ip = dnlookup(ipaddr, class, 1);
775 3e0d8fb3 2005-12-27 devnull rp->owner = nsdp;
776 3e0d8fb3 2005-12-27 devnull rp->local = 1;
777 3e0d8fb3 2005-12-27 devnull rp->db = 1;
778 3e0d8fb3 2005-12-27 devnull rp->ttl = 10*Min;
779 3e0d8fb3 2005-12-27 devnull rrattach(rp, 1);
783 3e0d8fb3 2005-12-27 devnull * return list of dns server addresses to use when
784 3e0d8fb3 2005-12-27 devnull * acting just as a resolver.
787 3e0d8fb3 2005-12-27 devnull dnsservers(int class)
789 3e0d8fb3 2005-12-27 devnull Ndbtuple *t, *nt;
790 3e0d8fb3 2005-12-27 devnull RR *nsrp;
792 3e0d8fb3 2005-12-27 devnull char *p;
793 3e0d8fb3 2005-12-27 devnull int i, n;
794 3e0d8fb3 2005-12-27 devnull char *buf, *args[5];
796 3e0d8fb3 2005-12-27 devnull dp = dnlookup(localservers, class, 1);
797 3e0d8fb3 2005-12-27 devnull nsrp = rrlookup(dp, Tns, NOneg);
798 3e0d8fb3 2005-12-27 devnull if(nsrp != nil)
799 3e0d8fb3 2005-12-27 devnull return nsrp;
801 3e0d8fb3 2005-12-27 devnull p = getenv("DNSSERVER");
802 3e0d8fb3 2005-12-27 devnull if(p != nil){
803 3e0d8fb3 2005-12-27 devnull buf = estrdup(p);
804 3e0d8fb3 2005-12-27 devnull n = tokenize(buf, args, nelem(args));
805 3e0d8fb3 2005-12-27 devnull for(i = 0; i < n; i++)
806 3e0d8fb3 2005-12-27 devnull addlocaldnsserver(dp, class, args[i], i);
807 3e0d8fb3 2005-12-27 devnull free(buf);
808 3e0d8fb3 2005-12-27 devnull } else {
809 3e0d8fb3 2005-12-27 devnull t = lookupinfo("@dns");
810 3e0d8fb3 2005-12-27 devnull if(t == nil)
811 3e0d8fb3 2005-12-27 devnull return nil;
813 3e0d8fb3 2005-12-27 devnull for(nt = t; nt != nil; nt = nt->entry){
814 3e0d8fb3 2005-12-27 devnull addlocaldnsserver(dp, class, nt->val, i);
817 3e0d8fb3 2005-12-27 devnull ndbfree(t);
820 3e0d8fb3 2005-12-27 devnull return rrlookup(dp, Tns, NOneg);
823 3e0d8fb3 2005-12-27 devnull static void
824 3e0d8fb3 2005-12-27 devnull addlocaldnsdomain(DN *dp, int class, char *domain)
828 3e0d8fb3 2005-12-27 devnull /* A record */
829 3e0d8fb3 2005-12-27 devnull rp = rralloc(Tptr);
830 3e0d8fb3 2005-12-27 devnull rp->ptr = dnlookup(domain, class, 1);
831 3e0d8fb3 2005-12-27 devnull rp->owner = dp;
832 3e0d8fb3 2005-12-27 devnull rp->db = 1;
833 3e0d8fb3 2005-12-27 devnull rp->ttl = 10*Min;
834 3e0d8fb3 2005-12-27 devnull rrattach(rp, 1);
838 3e0d8fb3 2005-12-27 devnull * return list of domains to use when resolving names without '.'s
841 3e0d8fb3 2005-12-27 devnull domainlist(int class)
843 3e0d8fb3 2005-12-27 devnull Ndbtuple *t, *nt;
847 3e0d8fb3 2005-12-27 devnull dp = dnlookup("local#dns#domains", class, 1);
848 3e0d8fb3 2005-12-27 devnull rp = rrlookup(dp, Tptr, NOneg);
849 3e0d8fb3 2005-12-27 devnull if(rp != nil)
850 3e0d8fb3 2005-12-27 devnull return rp;
852 3e0d8fb3 2005-12-27 devnull t = lookupinfo("dnsdomain");
853 3e0d8fb3 2005-12-27 devnull if(t == nil)
854 3e0d8fb3 2005-12-27 devnull return nil;
855 3e0d8fb3 2005-12-27 devnull for(nt = t; nt != nil; nt = nt->entry)
856 3e0d8fb3 2005-12-27 devnull addlocaldnsdomain(dp, class, nt->val);
857 3e0d8fb3 2005-12-27 devnull ndbfree(t);
859 3e0d8fb3 2005-12-27 devnull return rrlookup(dp, Tptr, NOneg);
862 3e0d8fb3 2005-12-27 devnull char *v4ptrdom = ".in-addr.arpa";
863 3e0d8fb3 2005-12-27 devnull char *v6ptrdom = ".ip6.arpa"; /* ip6.int deprecated, rfc 3152 */
865 3e0d8fb3 2005-12-27 devnull char *attribs[] = {
866 3e0d8fb3 2005-12-27 devnull "ipmask",
871 3e0d8fb3 2005-12-27 devnull * create ptrs that are in our areas
873 3e0d8fb3 2005-12-27 devnull static void
874 3e0d8fb3 2005-12-27 devnull createptrs(void)
876 3e0d8fb3 2005-12-27 devnull int len, dlen, n;
877 3e0d8fb3 2005-12-27 devnull Area *s;
878 3e0d8fb3 2005-12-27 devnull char *f[40];
879 3e0d8fb3 2005-12-27 devnull char buf[Domlen+1];
880 3e0d8fb3 2005-12-27 devnull uchar net[IPaddrlen];
881 3e0d8fb3 2005-12-27 devnull uchar mask[IPaddrlen];
882 3e0d8fb3 2005-12-27 devnull char ipa[48];
883 3e0d8fb3 2005-12-27 devnull Ndbtuple *t, *nt;
885 3e0d8fb3 2005-12-27 devnull dlen = strlen(v4ptrdom);
886 3e0d8fb3 2005-12-27 devnull for(s = owned; s; s = s->next){
887 3e0d8fb3 2005-12-27 devnull len = strlen(s->soarr->owner->name);
888 3e0d8fb3 2005-12-27 devnull if(len <= dlen)
889 3e0d8fb3 2005-12-27 devnull continue;
890 3e0d8fb3 2005-12-27 devnull if(cistrcmp(s->soarr->owner->name+len-dlen, v4ptrdom) != 0)
891 3e0d8fb3 2005-12-27 devnull continue;
893 3e0d8fb3 2005-12-27 devnull /* get mask and net value */
894 3e0d8fb3 2005-12-27 devnull strncpy(buf, s->soarr->owner->name, sizeof(buf));
895 3e0d8fb3 2005-12-27 devnull buf[sizeof(buf)-1] = 0;
896 3e0d8fb3 2005-12-27 devnull n = getfields(buf, f, nelem(f), 0, ".");
897 3e0d8fb3 2005-12-27 devnull memset(mask, 0xff, IPaddrlen);
898 3e0d8fb3 2005-12-27 devnull ipmove(net, v4prefix);
899 3e0d8fb3 2005-12-27 devnull switch(n){
900 3e0d8fb3 2005-12-27 devnull case 3: /* /8 */
901 3e0d8fb3 2005-12-27 devnull net[IPv4off] = atoi(f[0]);
902 3e0d8fb3 2005-12-27 devnull mask[IPv4off+1] = 0;
903 3e0d8fb3 2005-12-27 devnull mask[IPv4off+2] = 0;
904 3e0d8fb3 2005-12-27 devnull mask[IPv4off+3] = 0;
906 3e0d8fb3 2005-12-27 devnull case 4: /* /16 */
907 3e0d8fb3 2005-12-27 devnull net[IPv4off] = atoi(f[1]);
908 3e0d8fb3 2005-12-27 devnull net[IPv4off+1] = atoi(f[0]);
909 3e0d8fb3 2005-12-27 devnull mask[IPv4off+2] = 0;
910 3e0d8fb3 2005-12-27 devnull mask[IPv4off+3] = 0;
912 3e0d8fb3 2005-12-27 devnull case 5: /* /24 */
913 3e0d8fb3 2005-12-27 devnull net[IPv4off] = atoi(f[2]);
914 3e0d8fb3 2005-12-27 devnull net[IPv4off+1] = atoi(f[1]);
915 3e0d8fb3 2005-12-27 devnull net[IPv4off+2] = atoi(f[0]);
916 3e0d8fb3 2005-12-27 devnull mask[IPv4off+3] = 0;
918 3e0d8fb3 2005-12-27 devnull case 6: /* rfc2317 */
919 3e0d8fb3 2005-12-27 devnull net[IPv4off] = atoi(f[3]);
920 3e0d8fb3 2005-12-27 devnull net[IPv4off+1] = atoi(f[2]);
921 3e0d8fb3 2005-12-27 devnull net[IPv4off+2] = atoi(f[1]);
922 3e0d8fb3 2005-12-27 devnull net[IPv4off+3] = atoi(f[0]);
923 3e0d8fb3 2005-12-27 devnull sprint(ipa, "%I", net);
924 3e0d8fb3 2005-12-27 devnull t = ndbipinfo(db, "ip", ipa, attribs, 1);
925 3e0d8fb3 2005-12-27 devnull if(t == nil) /* could be a reverse with no forward */
926 3e0d8fb3 2005-12-27 devnull continue;
927 3e0d8fb3 2005-12-27 devnull nt = look(t, t, "ipmask");
928 3e0d8fb3 2005-12-27 devnull if(nt == nil){ /* we're confused */
929 3e0d8fb3 2005-12-27 devnull ndbfree(t);
930 3e0d8fb3 2005-12-27 devnull continue;
932 3e0d8fb3 2005-12-27 devnull parseipmask(mask, nt->val);
935 3e0d8fb3 2005-12-27 devnull default:
936 3e0d8fb3 2005-12-27 devnull continue;
939 3e0d8fb3 2005-12-27 devnull /* go through all domain entries looking for RR's in this network and create ptrs */
940 3e0d8fb3 2005-12-27 devnull dnptr(net, mask, s->soarr->owner->name, 6-n, 0);
