step

lib/dnsbox-base/src/common_types/name/mod.rs

@@ -318,9 +318,9 @@ mod tests {
 
 /*
 	fn deserialize(bytes: &'static [u8]) -> Result<DnsName> {
-		let result = packet::deserialize::<DnsName>(Bytes::from_static(bytes))?;
+		let result = packet::deserialize_with(Bytes::from_static(bytes), DnsName::deserialize)?;
 		{
-			let check_result = packet::deserialize::<DnsName>(result.clone().encode()).unwrap();
+			let check_result = packet::deserialize_with(result.clone().encode(), DnsName::deserialize).unwrap();
 			assert_eq!(check_result, result);
 		}
 		Ok(result)
@@ -328,7 +328,7 @@ mod tests {
 */
 
 	fn de_uncompressed(bytes: &'static [u8]) -> Result<DnsName> {
-		let result = packet::deserialize::<DnsName>(Bytes::from_static(bytes))?;
+		let result = packet::deserialize_with(Bytes::from_static(bytes), DnsName::deserialize)?;
 		assert_eq!(bytes, result.clone().encode());
 		Ok(result)
 	}

lib/dnsbox-base/src/common_types/name/name_mutations.rs

@@ -141,6 +141,10 @@ impl DnsName {
 		if label_offsets.is_empty() {
 			// root name
 			let mut data = data.unwrap_or_else(|_| BytesMut::with_capacity(new_len));
+			if data.len() < new_len {
+				let add = new_len - data.len();
+				data.reserve(add);
+			}
 			unsafe { data.set_len(new_len); }
 			data[0] = 0;
 			return (data, 0)

lib/dnsbox-base/src/common_types/name/name_packet_parser.rs

@@ -17,7 +17,7 @@ impl DnsName {
 			{
 				ensure!(pos + 1 < data.len(), "not enough data for compressed label");
 				let new_pos = ((label_len as usize & 0x3f) << 8) | (data[pos + 1] as usize);
-				ensure!(new_pos < pos, "Compressed label offset to big");
+				ensure!(new_pos < pos, "Compressed label offset too big: {} >= {}", new_pos, pos);
 				pos = new_pos;
 			}
 

lib/dnsbox-base/src/common_types/nsec.rs

@@ -87,7 +87,7 @@ impl DnsPacketData for NsecTypeBitmap {
 			check_enough_data!(data, window_len as usize, "nsec bitmap window length");
 			for i in 0..window_len {
 				let mut v = data.get_u8();
-				for j in 0..7 {
+				for j in 0..8 {
 					if 0 != v & 0x80 {
 						set.insert(Type(window_base + i*8 + j));
 					}

lib/dnsbox-base/src/records/mod.rs

@@ -8,3 +8,6 @@ pub use self::unknown::*;
 
 #[cfg(test)]
 mod tests;
+
+#[cfg(test)]
+mod powerdns_tests;

lib/dnsbox-base/src/records/registry.rs

@@ -9,6 +9,7 @@ use common_types::{Class, Type, types};
 use errors::*;
 use records::structs;
 use ser::{RRData, StaticRRData};
+use ser::text::DnsTextContext;
 
 // this should be enough for registered names
 const TYPE_NAME_MAX_LEN: usize = 16;
@@ -42,6 +43,26 @@ pub fn known_name_to_type(name: &str) -> Option<Type> {
 	Some(t)
 }
 
+pub fn deserialize_rr_data(ttl: u32, rr_class: Class, rr_type: Type, data: &mut Cursor<Bytes>) -> Result<Box<RRData>> {
+	let registry = registry();
+	match registry.type_parser.get(&rr_type) {
+		Some(p) => p.deserialize_rr_data(ttl, rr_class, rr_type, data),
+		None => Ok(Box::new(super::UnknownRecord::deserialize(rr_type, data)?) as _),
+	}
+}
+
+pub fn parse_rr_data(context: &DnsTextContext, data: &mut &str) -> Result<Box<RRData>> {
+	let registry = registry();
+	let t = match context.record_type() {
+		Some(t) => t,
+		None => bail!("require record type to parse record data"),
+	};
+	match registry.type_parser.get(&t) {
+		Some(p) => p.parse_rr_data(context, data),
+		None => bail!("unknown type: {}", t),
+	}
+}
+
 pub(crate) fn lookup_type_to_name(rrtype: Type) -> Option<&'static str> {
 	let registry = registry();
 	registry.type_names.get(&rrtype).map(|s| s as _)
@@ -61,12 +82,18 @@ trait RRDataTypeParse: 'static {
 	}
 
 	fn deserialize_rr_data(&self, ttl: u32, rr_class: Class, rr_type: Type, data: &mut Cursor<Bytes>) -> Result<Box<RRData>>;
+
+	fn parse_rr_data(&self, context: &DnsTextContext, data: &mut &str) -> Result<Box<RRData>>;
 }
 
 impl<T: RRData + 'static> RRDataTypeParse for TagRRDataType<T> {
 	fn deserialize_rr_data(&self, ttl: u32, rr_class: Class, rr_type: Type, data: &mut Cursor<Bytes>) -> Result<Box<RRData>> {
 		T::deserialize_rr_data(ttl, rr_class, rr_type, data).map(|d| Box::new(d) as _)
 	}
+
+	fn parse_rr_data(&self, context: &DnsTextContext, data: &mut &str) -> Result<Box<RRData>> {
+		T::dns_parse_rr_data(context, data).map(|d| Box::new(d) as _)
+	}
 }
 
 struct Registry {

lib/dnsbox-base/src/records/tests.rs

@@ -2,7 +2,7 @@ use bytes::{Bytes, Buf};
 use common_types::classes;
 use failure::ResultExt;
 use records::structs;
-use ser::{packet, text, StaticRRData};
+use ser::{packet, text, StaticRRData, DnsPacketData};
 use std::fmt;
 use std::io::Cursor;
 
@@ -55,6 +55,11 @@ fn test_a() {
 	check::<structs::A>("127.0.0.1", b"\x7f\x00\x00\x01").unwrap();
 }
 
+#[test]
+fn test_mx() {
+	check::<structs::MX>("10 mx.rec.test.", b"\x00\x0a\x02mx\x03rec\x04test\x00").unwrap();
+}
+
 fn test_txt_for<T>()
 where
 	T: StaticRRData + fmt::Debug + PartialEq
@@ -94,6 +99,7 @@ fn test_ds() {
 fn test_nsec() {
 	check::<structs::NSEC>("foo.bar. ", b"\x03foo\x03bar\x00").unwrap();
 	check::<structs::NSEC>("foo.bar. A NS ", b"\x03foo\x03bar\x00\x00\x01\x60").unwrap();
+	check::<structs::NSEC>("foo.bar. A NS SOA MX AAAA RRSIG NSEC DNSKEY ", b"\x03foo\x03bar\x00\x00\x07\x62\x01\x00\x08\x00\x03\x80").unwrap();
 	check::<structs::NSEC>("foo.bar. A NS TYPE256 TYPE65280 ", b"\x03foo\x03bar\x00\x00\x01\x60\x01\x01\x80\xff\x01\x80").unwrap();
 }
 
@@ -115,7 +121,7 @@ fn test_nsec3() {
 	rrdata_parse::<structs::NSEC3>("1 2 300 - vv").unwrap_err();
 
 	// invalid (empty) next-hashed values
-	packet::deserialize::<structs::NSEC3>(Bytes::from_static(b"\x01\x02\x01\x2c\x00\x00")).unwrap_err();
+	packet::deserialize_with(Bytes::from_static(b"\x01\x02\x01\x2c\x00\x00"), structs::NSEC3::deserialize).unwrap_err();
 }
 
 #[test]

lib/dnsbox-base/src/records/unknown.rs

@@ -4,8 +4,9 @@ use common_types::binary::HEXLOWER_PERMISSIVE_ALLOW_WS;
 use errors::*;
 use failure::{ResultExt, Fail};
 use ser::packet::remaining_bytes;
-use ser::RRDataPacket;
-use ser::text::{DnsTextFormatter, next_field};
+use ser::{RRData, RRDataPacket, RRDataText};
+use ser::text::{DnsTextFormatter, DnsTextContext, next_field};
+use std::borrow::Cow;
 use std::fmt;
 use std::io::Cursor;
 
@@ -36,16 +37,13 @@ impl UnknownRecord {
 		let result = HEXLOWER_PERMISSIVE_ALLOW_WS.decode(data.as_bytes())
 			.with_context(|e| e.context(format!("invalid hex: {:?}", data)))?;
 		ensure!(len == result.len(), "length {} doesn't match length of encoded data {}", len, result.len());
+		*data = ""; // read all data
 
 		Ok(UnknownRecord {
 			rr_type,
 			raw: result.into(),
 		})
 	}
-
-	pub fn dns_format(&self, f: &mut DnsTextFormatter) -> fmt::Result {
-		write!(f, "TYPE{} \\# {} {}", self.rr_type.0, self.raw.len(), HEXLOWER_PERMISSIVE_ALLOW_WS.encode(&self.raw))
-	}
 }
 
 impl RRDataPacket for UnknownRecord {
@@ -57,3 +55,29 @@ impl RRDataPacket for UnknownRecord {
 		self.rr_type
 	}
 }
+
+impl RRDataText for UnknownRecord {
+	fn dns_parse_rr_data(context: &DnsTextContext, data: &mut &str) -> Result<Self>
+	where
+		Self: Sized,
+	{
+		let t = match context.record_type() {
+			Some(t) => t,
+			None => bail!("must parse DNS record with record type context"),
+		};
+
+		UnknownRecord::dns_parse(t, data)
+	}
+
+	// format might fail if there is no (known) text representation.
+	fn dns_format_rr_data(&self, f: &mut DnsTextFormatter) -> fmt::Result {
+		write!(f, "\\# {} {}", self.raw.len(), HEXLOWER_PERMISSIVE_ALLOW_WS.encode(&self.raw))
+	}
+
+	fn rr_type_txt(&self) -> Cow<'static, str> {
+		Cow::Owned(self.rr_type.generic_name())
+	}
+}
+
+impl RRData for UnknownRecord {
+}

lib/dnsbox-base/src/ser/mod.rs

@@ -4,4 +4,4 @@ mod rrdata;
 
 pub use self::packet::DnsPacketData;
 pub use self::text::DnsTextData;
-pub use self::rrdata::{RRDataPacket, RRData, StaticRRData};
+pub use self::rrdata::{RRDataPacket, RRDataText, RRData, StaticRRData};

lib/dnsbox-base/src/ser/packet/mod.rs

@@ -8,14 +8,14 @@ pub trait DnsPacketData: Sized {
 	fn deserialize(data: &mut Cursor<Bytes>) -> Result<Self>;
 }
 
-pub fn deserialize<T>(data: Bytes) -> Result<T>
+pub fn deserialize_with<F, O>(data: Bytes, parser: F) -> Result<O>
 where
-	T: DnsPacketData
+	F: FnOnce(&mut Cursor<Bytes>) -> Result<O>,
 {
 	let mut c = Cursor::new(data);
-	let result = T::deserialize(&mut c)?;
+	let result = parser(&mut c)?;
 	if c.remaining() != 0 {
-		bail!("data remaining: {}", c.remaining())
+		bail!("data remaining: {} bytes", c.remaining())
 	}
 	Ok(result)
 }

lib/dnsbox-base/src/ser/rrdata.rs

@@ -39,15 +39,12 @@ pub trait RRDataText {
 	// format might fail if there is no (known) text representation.
 	fn dns_format_rr_data(&self, f: &mut DnsTextFormatter) -> fmt::Result;
 
-	fn rr_type_txt(&self) -> Cow<'static, str> {
-		unimplemented!()
-	}
+	fn rr_type_txt(&self) -> Cow<'static, str>;
 
 	// (type, rrdata)
 	fn text(&self) -> Result<(String, String)> {
-		use std::fmt::Write;
 		let mut buf = String::new();
-		match write!(&mut buf, "{}", DnsDisplayRR(self)) {
+		match self.dns_format_rr_data(&mut DnsTextFormatter::new(&mut buf)) {
 			Ok(()) => {
 				return Ok((self.rr_type_txt().into(), buf))
 			},
@@ -75,14 +72,9 @@ impl<T: DnsTextData + StaticRRData> RRDataText for T {
 	fn dns_format_rr_data(&self, f: &mut DnsTextFormatter) -> fmt::Result {
 		self.dns_format(f)
 	}
-}
 
-#[derive(Debug)]
-pub struct DnsDisplayRR<'a, T: RRDataText + ?Sized + 'a>(pub &'a T);
-
-impl<'a, T: RRDataText + ?Sized + 'a> fmt::Display for DnsDisplayRR<'a, T> {
-	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-		self.0.dns_format_rr_data(&mut DnsTextFormatter::new(f))
+	fn rr_type_txt(&self) -> Cow<'static, str> {
+		Cow::Borrowed(T::NAME)
 	}
 }
 

lib/dnsbox-base/src/ser/text/mod.rs

@@ -54,15 +54,15 @@ pub fn escape(data: &[u8]) -> String {
 
 /// Each call to write!() makes sure a space is emitted to separate it
 /// from previous fields.
-pub struct DnsTextFormatter<'a, 'b: 'a> {
-	f: &'a mut fmt::Formatter<'b>,
+pub struct DnsTextFormatter<'a> {
+	w: &'a mut fmt::Write,
 	need_space: bool,
 }
 
-impl<'a, 'b> DnsTextFormatter<'a, 'b> {
-	pub fn new(f: &'a mut fmt::Formatter<'b>) -> Self {
+impl<'a> DnsTextFormatter<'a> {
+	pub fn new(w: &'a mut fmt::Write) -> Self {
 		DnsTextFormatter {
-			f: f,
+			w: w,
 			need_space: false,
 		}
 	}
@@ -70,7 +70,7 @@ impl<'a, 'b> DnsTextFormatter<'a, 'b> {
 	/// make sure a field separator was emitted
 	pub fn next_field(&mut self) -> fmt::Result {
 		if self.need_space {
-			write!(self.f, " ")?;
+			write!(self.w, " ")?;
 			self.need_space = false;
 		}
 		Ok(())
@@ -83,13 +83,13 @@ impl<'a, 'b> DnsTextFormatter<'a, 'b> {
 
 	/// direct access to underlying output; you'll need to call
 	/// `next_field` and `end_field` manually.
-	pub fn inner(&mut self) -> &mut fmt::Formatter<'b> {
-		self.f
+	pub fn inner(&mut self) -> &mut fmt::Write {
+		self.w
 	}
 
 	pub fn write_fmt(&mut self, args: fmt::Arguments) -> fmt::Result {
 		self.next_field()?;
-		self.f.write_fmt(args)?;
+		self.w.write_fmt(args)?;
 		self.end_field();
 		Ok(())
 	}

lib/dnsbox-derive/src/dns_packet_data.rs

@@ -25,7 +25,7 @@ pub fn build(ast: &syn::DeriveInput) -> quote::Tokens {
 	let mut parse_fields = quote!{};
 	for field in fields {
 		let field_name = field.ident.as_ref().unwrap();
-		let ctx_msg = format!("failed parsing field {}::{}", stringify!(#name), stringify!(#field_name));
+		let ctx_msg = format!("failed parsing field {}::{}", name, field_name);
 
 		parse_fields = quote!{#parse_fields
 			#field_name: DnsPacketData::deserialize(_data).context(#ctx_msg)?,