1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* ISC license. */
#include <stdint.h>
#include <skalibs/cdb.h>
#include <shibari/constants.h>
#include <shibari/tdb.h>
static int find_ns_and_soa (cdb const *tdb, char const *s, uint16_t len, char const *loc, tain const *stamp)
{
cdb_find_state state = CDB_FIND_STATE_ZERO ;
unsigned int flags = 0 ;
for (;;)
{
shibari_tdb_entry entry ;
cdb_data data ;
int r = cdb_findnext(tdb, &data, s, len, &state) ;
if (r == -1) return -1 ;
if (!r) break ;
r = shibari_tdb_entry_parse(&entry, data.s, data.len, SHIBARI_T_ANY, 0, loc, stamp) ;
if (r == -1) return -1 ;
if (!r) continue ;
if (entry.type == SHIBARI_T_SOA) flags |= 1 ;
else if (entry.type == SHIBARI_T_NS) flags |= 2 ;
}
return flags ;
}
int shibari_tdb_find_authority (cdb const *tdb, char const *s, uint16_t len, char const *loc, tain const *stamp, int *npl)
{
uint16_t pos = 0 ;
uint16_t zplen = 0 ;
int nplen = -1 ;
while (pos < len)
{
int flags = find_ns_and_soa(tdb, s + pos, len - pos, loc, stamp) ;
if (flags == -1) return -1 ;
if (flags & 2) nplen = pos ;
if (flags & 1) { zplen = pos ; break ; }
pos += 1 + (uint8_t)s[pos] ;
}
if (pos >= len) return -2 ; /* out of bailiwick */
*npl = nplen ;
return zplen ;
}
|
