add support for srv, sshfp, txt

src/models/dns.rs

@@ -62,11 +62,25 @@ pub enum RData {
         minimum: u32,
         serial: u32
     },
-    // SRV(SRV),
+    #[serde(rename_all = "PascalCase")]
-    // SSHFP(SSHFP),
+    SRV {
+        server: String,
+        port: u16,
+        priority: u16,
+        weight: u16,
+    },
+    #[serde(rename_all = "PascalCase")]
+    SSHFP {
+        algorithm: u8,
+        digest_type: u8,
+        fingerprint: String,
+    },
     // SVCB(SVCB),
     // TLSA(TLSA),
-    // TXT(TXT),
+    #[serde(rename_all = "PascalCase")]
+    TXT {
+        text: String
+    },
 
     // TODO: Eventually allow deserialization of DNSSEC records
     #[serde(skip)]
@@ -120,11 +134,24 @@ impl From<trust_dns_types::RData> for RData {
                 minimum: soa.minimum(),
                 serial: soa.serial()
             },
+            trust_dns_types::RData::SRV(srv) => RData::SRV {
+                server: srv.target().to_utf8(),
+                port: srv.port(),
+                priority: srv.priority(),
+                weight: srv.weight(),
+            },
+            trust_dns_types::RData::SSHFP(sshfp) => RData::SSHFP {
+                algorithm: sshfp.algorithm().into(),
+                digest_type: sshfp.fingerprint_type().into(),
+                fingerprint: trust_dns_types::sshfp::HEX.encode(sshfp.fingerprint()),
+            },
+            trust_dns_types::RData::TXT(txt) => RData::TXT { text: format!("{}", txt) },
             trust_dns_types::RData::DNSSEC(data) => RData::DNSSEC(data),
             rdata => {
                 let code = rdata.to_record_type().into();
                 let mut data = Vec::new();
                 let mut encoder = BinEncoder::new(&mut data);
+                // TODO: need better error handling (use TryFrom ?)
                 rdata.emit(&mut encoder).expect("could not encode data");
 
                 RData::Unknown {

src/models/mod.rs

@@ -3,7 +3,7 @@ pub mod errors;
 
 pub mod trust_dns_types {
     pub use trust_dns_client::rr::rdata::{
-        NULL, caa, DNSSECRData
+        DNSSECRData, caa, sshfp,
     };
     pub use trust_dns_client::rr::{
         RData, DNSClass, Record