extern val wildcard : bind_pattern;
{{A rule applies to every host within the current domain.}}
+extern type srv_pattern;
+{{Like <tt>bind_pattern</tt>, but for SRV and TXT records, where underscores are allowed in hostnames}}
+extern val srv_literal : srv_domain -> srv_pattern;
+extern val srv_default : srv_pattern;
+extern val srv_wildcard : srv_pattern;
+
extern val dnsA : bind_pattern -> ip -> dnsRecord;
extern val dnsAAAA : bind_pattern -> ipv6 -> dnsRecord;
extern val dnsAFSDB : domain -> dnsRecord;
extern val dnsCNAME : bind_pattern -> domain -> dnsRecord;
extern val dnsMX : int -> domain -> dnsRecord;
extern val dnsNS : domain -> dnsRecord;
-extern val dnsSRV : srv_domain -> int -> int -> int -> domain -> dnsRecord;
-extern val dnsTXT : bind_pattern -> no_newlines -> dnsRecord;
+extern val dnsSRV : srv_pattern -> int -> int -> int -> domain -> dnsRecord;
+extern val dnsTXT : srv_pattern -> no_newlines -> dnsRecord;
extern val dns : dnsRecord -> [Domain] {TTL : int};
| AAAA of host * string
| TXT of host * string
| AFSDB of string
- | SRV of string * int * int * int * string
+ | SRV of host * int * int * int * string
fun hostS (Literal s) = s ^ "."
| hostS Wildcard = "*."
SOME Default
| _ => NONE
+val srv_host = fn (EApp ((EVar "srv_literal", _), e), _) =>
+ Option.map Literal (Env.string e)
+ | (EVar "srv_wildcard", _) =>
+ SOME Wildcard
+ | (EVar "srv_default", _) =>
+ SOME Default
+ | _ => NONE
+
val record = fn (EApp ((EApp ((EVar "dnsA", _), e1), _), e2), _) =>
(case (host e1, Domain.ip e2) of
(SOME v1, SOME v2) => SOME (A (v1, v2))
(SOME v1, SOME v2) => SOME (AAAA (v1, v2))
| _ => NONE)
| (EApp ((EApp ((EVar "dnsTXT", _), e1), _), e2), _) =>
- (case (host e1, Env.string e2) of
+ (case (srv_host e1, Env.string e2) of
(SOME v1, SOME v2) => SOME (TXT (v1, v2))
| _ => NONE)
| (EApp ((EVar "dnsAFSDB", _), e), _) =>
Option.map AFSDB (Env.string e)
| (EApp ((EApp ((EApp ((EApp ((EApp ((EVar "dnsSRV", _), e1), _), e2), _), e3), _), e4), _), e5), _) =>
- (case (Env.string e1, Env.int e2, Env.int e3, Env.int e4, Env.string e5) of
+ (case (srv_host e1, Env.int e2, Env.int e3, Env.int e4, Env.string e5) of
(SOME v1, SOME v2, SOME v3, SOME v4, SOME v5) => SOME (SRV (v1, v2, v3, v4, v5))
| _ => NONE)
| _ => NONE
write "\t";
write host;
write ".\n")
- | SRV (from, priority, weight, port, to) => (write from;
- write ".";
+ | SRV (from, priority, weight, port, to) => (write (hostS from);
writeDom ();
write ".\t";
write (Int.toString ttl);
heading = "DNS zonefile contents:",
showEmpty = false}])
-fun validHost_ s =
+fun validSrvHost s =
size s > 0 andalso size s < 20
andalso CharVector.all (fn ch => Domain.isIdent ch orelse ch = #"-" orelse ch = #"_") s
-fun validSRVDomain s =
+fun validSrvDomain s =
size s > 0 andalso size s < 100
- andalso List.all validHost_ (String.fields (fn ch => ch = #".") s)
+ andalso List.all validSrvHost (String.fields (fn ch => ch = #".") s)
+
+val _ = Env.type_one "srv_host"
+ Env.string
+ validSrvHost
val _ = Env.type_one "srv_domain"
Env.string
- validSRVDomain
+ validSrvDomain
end