adding asym crypto, fixing txt, appending logs

Cargo.lock

@@ -2,6 +2,42 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aead"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
+dependencies = [
+ "crypto-common",
+ "generic-array",
+]
+
+[[package]]
+name = "aes"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac1f845298e95f983ff1944b728ae08b8cebab80d684f0a832ed0fc74dfa27e2"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
+[[package]]
+name = "aes-gcm-siv"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae0784134ba9375416d469ec31e7c5f9fa94405049cf08c5ce5b4698be673e0d"
+dependencies = [
+ "aead",
+ "aes",
+ "cipher",
+ "ctr",
+ "polyval",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.11"
@@ -50,12 +86,43 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "base16ct"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
+
+[[package]]
+name = "base64ct"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
+
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cipher"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
 [[package]]
 name = "clap"
 version = "4.4.18"
@@ -102,6 +169,64 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
 
+[[package]]
+name = "const-oid"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-bigint"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0dc92fb57ca44df6db8059111ab3af99a63d5d0f8375d9972e319a379c6bab76"
+dependencies = [
+ "generic-array",
+ "rand_core",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "rand_core",
+ "typenum",
+]
+
+[[package]]
+name = "ctr"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0369ee1ad671834580515889b80f2ea915f23b8be8d0daa4bbaf2ac5c7590835"
+dependencies = [
+ "cipher",
+]
+
+[[package]]
+name = "der"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fffa369a668c8af7dbf8b5e56c9f744fbd399949ed171606040001947de40b1c"
+dependencies = [
+ "const-oid",
+ "pem-rfc7468",
+ "zeroize",
+]
+
 [[package]]
 name = "deranged"
 version = "0.3.11"
@@ -111,6 +236,18 @@ dependencies = [
  "powerfmt",
 ]
 
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "const-oid",
+ "crypto-common",
+ "subtle",
+]
+
 [[package]]
 name = "dnstp"
 version = "0.1.0"
@@ -136,10 +273,69 @@ dependencies = [
 name = "dnstplib"
 version = "0.1.0"
 dependencies = [
+ "aes-gcm-siv",
  "log",
+ "p256",
+ "rand_core",
  "urlencoding",
 ]
 
+[[package]]
+name = "ecdsa"
+version = "0.16.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee27f32b5c5292967d2d4a9d7f1e0b0aed2c15daded5a60300e4abb9d8020bca"
+dependencies = [
+ "der",
+ "digest",
+ "elliptic-curve",
+ "rfc6979",
+ "signature",
+ "spki",
+]
+
+[[package]]
+name = "elliptic-curve"
+version = "0.13.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5e6043086bf7973472e0c7dff2142ea0b680d30e18d9cc40f267efbf222bd47"
+dependencies = [
+ "base16ct",
+ "crypto-bigint",
+ "digest",
+ "ff",
+ "generic-array",
+ "group",
+ "hkdf",
+ "pem-rfc7468",
+ "pkcs8",
+ "rand_core",
+ "sec1",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "ff"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
+dependencies = [
+ "rand_core",
+ "subtle",
+]
+
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+ "zeroize",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.12"
@@ -151,12 +347,50 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "group"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0f9ef7462f7c099f518d754361858f86d8a07af53ba9af0fe635bbccb151a63"
+dependencies = [
+ "ff",
+ "rand_core",
+ "subtle",
+]
+
 [[package]]
 name = "heck"
 version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
+[[package]]
+name = "hkdf"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b5f8eb2ad728638ea2c7d47a21db23b7b58a72ed6a38256b8a1849f15fbbdf7"
+dependencies = [
+ "hmac",
+]
+
+[[package]]
+name = "hmac"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+dependencies = [
+ "digest",
+]
+
+[[package]]
+name = "inout"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0c10553d664a4d0bcff9f4215d0aac67a639cc68ef660840afe309b807bc9f5"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.10"
@@ -184,6 +418,55 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "opaque-debug"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
+
+[[package]]
+name = "p256"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
+dependencies = [
+ "ecdsa",
+ "elliptic-curve",
+ "primeorder",
+ "sha2",
+]
+
+[[package]]
+name = "pem-rfc7468"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88b39c9bfcfc231068454382784bb460aae594343fb030d46e9f50a645418412"
+dependencies = [
+ "base64ct",
+]
+
+[[package]]
+name = "pkcs8"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f950b2377845cebe5cf8b5165cb3cc1a5e0fa5cfa3e1f7f55707d8fd82e0a7b7"
+dependencies = [
+ "der",
+ "spki",
+]
+
+[[package]]
+name = "polyval"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52cff9d1d4dee5fe6d03729099f4a310a41179e0a10dbf542039873f2e826fb"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "opaque-debug",
+ "universal-hash",
+]
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -196,6 +479,15 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
+[[package]]
+name = "primeorder"
+version = "0.13.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
+dependencies = [
+ "elliptic-curve",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.76"
@@ -244,6 +536,30 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "rfc6979"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8dd2a808d456c4a54e300a23e9f5a67e122c3024119acbfd73e3bf664491cb2"
+dependencies = [
+ "hmac",
+ "subtle",
+]
+
+[[package]]
+name = "sec1"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3e97a565f76233a6003f9f5c54be1d9c5bdfa3eccfb189469f11ec4901c47dc"
+dependencies = [
+ "base16ct",
+ "der",
+ "generic-array",
+ "pkcs8",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.196"
@@ -264,6 +580,27 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "signature"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77549399552de45a898a580c1b41d445bf730df867cc44e6c0233bbc4b8329de"
+dependencies = [
+ "digest",
+ "rand_core",
+]
+
 [[package]]
 name = "simplelog"
 version = "0.12.1"
@@ -275,12 +612,28 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "spki"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d91ed6c858b01f942cd56b37a94b3e0a1798290327d1236e4d9cf4eaca44d29d"
+dependencies = [
+ "base64ct",
+ "der",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
+[[package]]
+name = "subtle"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
+
 [[package]]
 name = "syn"
 version = "2.0.48"
@@ -332,12 +685,28 @@ dependencies = [
  "time-core",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
+[[package]]
+name = "universal-hash"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
+dependencies = [
+ "crypto-common",
+ "subtle",
+]
+
 [[package]]
 name = "urlencoding"
 version = "2.1.3"
@@ -350,6 +719,12 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
 
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -452,3 +827,9 @@ name = "windows_x86_64_msvc"
 version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"
+
+[[package]]
+name = "zeroize"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525b4ec142c6b68a2d10f01f7bbf6755599ca3f81ea53b8431b7dd348f5fdb2d"

dnstp-client/src/main.rs

@@ -1,4 +1,4 @@
-use std::fs::File;
+use std::fs::{File, OpenOptions};
 use std::net::SocketAddr;
 use std::thread;
 use std::time::Duration;
@@ -17,13 +17,24 @@ struct Args {
     /// Addresses to send requests
     #[arg(short, long)]
     address: String,
+    /// Base domain to operate on
+    #[arg(long)]
+    base_domain: String,
+    /// Sub-domain to handle key handling when requested
+    #[arg(long, default_value = "static")]
+    key_endpoint: String
 }
 
 fn main() {
     CombinedLogger::init(
         vec![
             TermLogger::new(LevelFilter::Info, Config::default(), TerminalMode::Mixed, ColorChoice::Auto),
-            WriteLogger::new(LevelFilter::Info, Config::default(), File::create("dnstp.log").unwrap()),
+            WriteLogger::new(LevelFilter::Info, Config::default(), OpenOptions::new()
+                .read(true)
+                .write(true)
+                .append(true)
+                .create(true)
+                .open("dnstp.log").unwrap()),
         ]
     ).unwrap();
 
@@ -42,12 +53,14 @@ fn main() {
 
     socket.run_rx(processor.get_message_channel().expect("couldn't get message processing channel"));
 
+    let domain = vec![args.key_endpoint, args.base_domain].join(".");
+
     let mut rng = rand::thread_rng();
     loop {
 
         info!("sending...");
 
-        let message = DNSRequest::from_hostname(address, rng.next_u32() as u16, "duck.com".to_string());
+        let message = DNSRequest::from_hostname(address, rng.next_u32() as u16, domain.clone());
 
         let bytes = message.to_bytes();
 

dnstp-server/src/main.rs

@@ -5,8 +5,9 @@ use std::{thread};
 
 use log::info;
 use simplelog::*;
-use std::fs::File;
+use std::fs::{File, OpenOptions};
 use std::net::SocketAddr;
+use dnstplib::DomainConfig;
 
 use dnstplib::net::DNSSocket;
 use dnstplib::processor::RequestProcesor;
@@ -18,13 +19,24 @@ struct Args {
     /// Addresses to bind server to
     #[arg(short, long)]
     address: Vec<String>,
+    /// Base domain to operate on
+    #[arg(long)]
+    base_domain: String,
+    /// Sub-domain to handle key handling when requested
+    #[arg(long, default_value = "static")]
+    key_endpoint: String
 }
 
 fn main() {
     CombinedLogger::init(
         vec![
             TermLogger::new(LevelFilter::Info, Config::default(), TerminalMode::Mixed, ColorChoice::Auto),
-            WriteLogger::new(LevelFilter::Info, Config::default(), File::create("dnstp.log").unwrap()),
+            WriteLogger::new(LevelFilter::Info, Config::default(), OpenOptions::new()
+                .read(true)
+                .write(true)
+                .append(true)
+                .create(true)
+                .open("dnstp.log").unwrap()),
         ]
     ).unwrap();
 
@@ -47,7 +59,10 @@ fn main() {
     socket.bind();
     socket.run_tx();
 
-    let mut processor = RequestProcesor::new();
+    let mut processor = RequestProcesor::new(DomainConfig {
+        base_domain: args.base_domain,
+        key_endpoint: args.key_endpoint
+    });
     processor.run(socket.get_tx_message_channel().expect("couldn't get message transmitting channel"));
 
     socket.run_rx(processor.get_message_channel().expect("couldn't get message processing channel"));

dnstp/Cargo.toml

@@ -7,4 +7,8 @@ edition = "2021"
 
 [dependencies]
 log = "0.4.20"
-urlencoding = "2.1.3"
+urlencoding = "2.1.3"
+
+rand_core = { version = "0.6.4", features = ["getrandom"] }
+p256 = { version = "0.13.2", features = ["ecdh"] }
+aes-gcm-siv = "0.11.1"

dnstp/src/config.rs

@@ -0,0 +1,6 @@
+
+#[derive(Clone)]
+pub struct DomainConfig {
+    pub base_domain: String,
+    pub key_endpoint: String,
+}

dnstp/src/crypto/mod.rs

@@ -0,0 +1,70 @@
+#[cfg(test)]
+mod tests;
+
+use p256::{EncodedPoint, PublicKey, ecdh::EphemeralSecret, NistP256};
+use p256::elliptic_curve::ecdh::SharedSecret;
+use aes_gcm_siv::{aead::{Aead, KeyInit}, AeadCore, Aes256GcmSiv, Nonce};
+
+use rand_core::OsRng;
+
+pub fn get_random_asym_pair() -> (EphemeralSecret, EncodedPoint)
+{
+    let secret = EphemeralSecret::random(&mut OsRng);
+    let public_point = EncodedPoint::from(secret.public_key());
+
+    (secret, public_point)
+}
+
+pub fn get_shared_asym_secret(secret: EphemeralSecret, opposing_public_key: EncodedPoint) -> Result<SharedSecret<NistP256>, ()> {
+
+    match PublicKey::from_sec1_bytes(opposing_public_key.as_ref()) {
+        Ok(other_public) => {
+            Ok(secret.diffie_hellman(&other_public))
+        }
+        Err(_) => {
+            Err(())
+        }
+    }
+}
+
+// pub fn generate_aes_nonce() -> Nonce
+// {
+//     let mut nonce_buffer: [u8; 12] = [0; 12];
+//     &OsRng.fill_bytes(&mut nonce_buffer);
+//
+//     Nonce::from(nonce_buffer)
+// }
+
+pub fn generate_aes_nonce() -> Nonce
+{
+    Aes256GcmSiv::generate_nonce(OsRng)
+}
+
+pub fn asym_to_sym_key(secret: &SharedSecret<NistP256>) -> Aes256GcmSiv
+{
+    Aes256GcmSiv::new(secret.raw_secret_bytes())
+}
+
+pub fn encrypt(key: &Aes256GcmSiv, nonce: &Nonce, bytes: &Vec<u8>) -> Result<Vec<u8>, ()>
+{
+    match key.encrypt(nonce, bytes.as_ref()) {
+        Ok(r) => {
+            Ok(r)
+        }
+        Err(_) => {
+            Err(())
+        }
+    }
+}
+
+pub fn decrypt(key: &Aes256GcmSiv, nonce: &Nonce, bytes: &Vec<u8>) -> Result<Vec<u8>, ()>
+{
+    match key.decrypt(nonce, bytes.as_ref()) {
+        Ok(r) => {
+            Ok(r)
+        }
+        Err(_) => {
+            Err(())
+        }
+    }
+}

dnstp/src/crypto/tests.rs

@@ -0,0 +1,35 @@
+use super::*;
+
+#[test]
+fn matching_shared_secrets() {
+    let (secret_alice, point_alice) = get_random_asym_pair();
+    let (secret_bob, point_bob) = get_random_asym_pair();
+
+    let shared_alice = get_shared_asym_secret(secret_alice, point_bob).unwrap();
+    let shared_bob = get_shared_asym_secret(secret_bob, point_alice).unwrap();
+
+    assert_eq!(shared_alice.raw_secret_bytes(), shared_bob.raw_secret_bytes());
+}
+
+#[test]
+fn arbitrary_string_back_and_forth() {
+    let data = String::from("hello world!");
+    let nonce = generate_aes_nonce();
+
+    let (secret_alice, point_alice) = get_random_asym_pair();
+    let (secret_bob, point_bob) = get_random_asym_pair();
+
+    let shared_alice = get_shared_asym_secret(secret_alice, point_bob).unwrap();
+    let shared_bob = get_shared_asym_secret(secret_bob, point_alice).unwrap();
+
+    assert_eq!(shared_alice.raw_secret_bytes(), shared_bob.raw_secret_bytes());
+
+    let sym_key = asym_to_sym_key(&shared_alice);
+
+    let cipher_text = encrypt(&sym_key, &nonce, &data.clone().into_bytes()).unwrap();
+    let plain_text = decrypt(&sym_key, &nonce, &cipher_text).unwrap();
+
+    let result = String::from_utf8(plain_text).unwrap();
+
+    assert_eq!(data, result);
+}

dnstp/src/lib.rs

@@ -4,4 +4,8 @@ mod byte;
 pub mod processor;
 pub mod message;
 pub mod net;
-mod string;
+mod string;
+pub mod config;
+mod crypto;
+
+pub use config::DomainConfig;

dnstp/src/message/answer/txt_rdata.rs

@@ -15,7 +15,7 @@ impl Debug for TXTRdata {
 
 impl RData for TXTRdata {
     fn to_bytes(&self) -> Vec<u8> {
-        self.rdata.into_bytes()
+        self.rdata.clone().into_bytes()
     }
 }
 

dnstp/src/processor/mod.rs

@@ -1,6 +1,7 @@
 
 pub mod request;
 pub mod response;
+pub mod encryption;
 
 pub use request::RequestProcesor;
 pub use response::ResponseProcesor;

dnstp/src/processor/request.rs

@@ -3,19 +3,22 @@ use std::sync::mpsc;
 use std::sync::mpsc::{Receiver, Sender};
 use std::thread;
 use log::{error, info};
+use crate::config::DomainConfig;
 
 use crate::message::{QuestionParseError, DNSResponse};
 use crate::net::{NetworkMessage, NetworkMessagePtr};
 use crate::request_parser::{HeaderParseError, parse_request, RequestParseError};
 
 pub struct RequestProcesor {
-    message_channel: Option<Sender<NetworkMessagePtr>>
+    message_channel: Option<Sender<NetworkMessagePtr>>,
+    domain_config: DomainConfig
 }
 
 impl RequestProcesor {
-    pub fn new() -> RequestProcesor {
+    pub fn new(domain_config: DomainConfig) -> RequestProcesor {
-        RequestProcesor{
+        RequestProcesor {
-            message_channel: None
+            message_channel: None,
+            domain_config
         }
     }
 
@@ -24,6 +27,10 @@ impl RequestProcesor {
         let (tx, rx): (Sender<NetworkMessagePtr>, Receiver<NetworkMessagePtr>) = mpsc::channel();
         self.message_channel = Some(tx);
 
+        let mut base_domain_equality = self.domain_config.base_domain.clone();
+        base_domain_equality.insert_str(0, ".");
+        let base_domain_len = base_domain_equality.len() + 1;
+
         thread::spawn(move || {
 
             for m in rx
@@ -34,14 +41,20 @@ impl RequestProcesor {
                     Ok(r) => {
                         info!("received dns message: {:?}", r);
 
-                        let mut response = DNSResponse::a_from_request(&r, |q| Ipv4Addr::from([127, 0, 0, 1]));
+                        if r.questions.iter().any(|q| q.qname.ends_with(&base_domain_equality))
+                        {
 
-                        sending_channel.send(Box::from(
+                        }
-                            NetworkMessage {
+                        else {
-                                buffer: Box::from(response.to_bytes()),
+                            let mut response = DNSResponse::a_from_request(&r, |q| Ipv4Addr::from([127, 0, 0, 1]));
-                                peer: response.peer
+
-                            }
+                            sending_channel.send(Box::from(
-                        ));
+                                NetworkMessage {
+                                    buffer: Box::from(response.to_bytes()),
+                                    peer: response.peer
+                                }
+                            ));
+                        }
                     }
                     Err(e) => {
                         match e {