blob: 4695dc14c7fe9bd63238ebbecdfaa293ca435b4c (
plain)
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
47
48
|
Just for info, can be out of date.
RFC 1876, 5.2, specially 5.2.3
Important points:
- LOC RRs are always attached to a *name*.
- we can have two (or more) RRs for one address, one more specific than the other
main
if (host is a name)
getLOCbyname
else # host is an IP address
gethostbyaddr
if (name)
getLOCbyname
# If there is none, do not search. We assume the above was sufficient # (But check 5.2.2)
else
getLOCbyaddress
getLOCbyname (host)
get LOC for host
if (it exists)
OK
else
get all A records of the name
foreach A record
getLOCbyaddress
OK at the first one found
# we assume they are consistent
END
getLOCbyaddress (address)
# May receive a mask. Otherwise, deduce it from the class
makeNetAddress
getLOCbynetwork
getLOCbynetwork
get PTR and A for it
if (exist)
getLOCbyname
******* DIFFICULT : we have to manage a stack. See the code
makeNetAddress (level--)
getLOCbynetwork
else
END
|
