wip stratum-v1 no_std client impl

Cargo.toml

@@ -7,6 +7,7 @@ members = [
     "arena",
     "codecs",
     "ffi",
+    "stratum-v1",
     "test-vectors",
     "ur",
     "urtypes",

stratum-v1/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "stratum-v1"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = { version = "1", default-features = false }
+heapless = { version = "0.7", features = ["serde"] }
+hex = { version = "0.4.3", default-features = false, features = ["serde", "heapless"], git = "https://github.com/Georges760/rust-hex.git", branch = "heapless" }
+json-rpc-types = { version = "1.3.4", features = ["id-number-only"] }
+serde = { version = "1", default-features = false, features = ["serde_derive"] }
+serde-json-core = { version = "0.5.1", features = ["custom-error-messages"] }

stratum-v1/src/client_not.rs

@@ -0,0 +1,72 @@
+use anyhow::{Error, Result};
+use heapless::{String, Vec};
+use serde::Deserialize;
+
+/// # Parse Notification Method
+///
+/// In order to know which kind of notification we are dealing with, we need to parse the notification method.
+///
+/// ## Parameters
+///
+/// resp: The slice notification to parse.
+///
+/// ## Examples
+/// ```
+/// use stratum_v1::client_not::parse_notification_method;
+/// use heapless::String;
+///
+/// let resp = br#"{"params":["00003000"], "id":null, "method": "mining.set_version_mask"}"#;
+/// assert_eq!(parse_notification_method(resp).unwrap(), String::<32>::from("mining.set_version_mask"));
+///
+/// let resp = br#"{"params": ["bf", "4d16b6f85af6e2198f44ae2a6de67f78487ae5611b77c6c0440b921e00000000","01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff20020862062f503253482f04b8864e5008","072f736c7573682f000000000100f2052a010000001976a914d23fcdf86f7e756a64a7a9688ef9903327048ed988ac00000000", [],"00000002", "1c2ac4af", "504e86b9", false], "id": null, "method": "mining.notify"}"#;
+/// assert_eq!(parse_notification_method(resp).unwrap(), String::<32>::from("mining.notify"));
+///
+/// let resp = br#"{ "id": null, "method": "mining.set_difficulty", "params": [2]}"#;
+/// assert_eq!(parse_notification_method(resp).unwrap(), String::<32>::from("mining.set_difficulty"));
+/// ```
+pub fn parse_notification_method(resp: &[u8]) -> Result<String<32>> {
+    #[derive(Deserialize)]
+    struct MethodOnly {
+        method: String<32>,
+    }
+    Ok(serde_json_core::from_slice::<MethodOnly>(resp)
+        .map_err(Error::msg)?
+        .0
+        .method)
+}
+
+/// # Parse Notification Set Version Mask
+///
+/// Parses the notification with the `set_version_mask` method.
+///
+/// ## Parameters
+///
+/// resp: The notification slice to parse.
+///
+/// ## Examples
+/// ```
+/// use stratum_v1::client_not::parse_notification_set_version_mask;
+///
+/// let resp = br#"{"params":["00003000"], "id":null, "method": "mining.set_version_mask"}"#;
+/// let r = parse_notification_set_version_mask(resp);
+/// println!("{:?}", r);
+/// assert_eq!(parse_notification_set_version_mask(resp).unwrap(), 0x00003000);
+/// ```
+pub fn parse_notification_set_version_mask(resp: &[u8]) -> Result<u32> {
+    #[derive(Deserialize)]
+    struct SetVersionMaskNotificationParams(
+        // mask: The meaning is the same as the "version-rolling.mask" return parameter.
+        #[serde(deserialize_with = "hex::deserialize")] Vec<u8, 8>,
+    );
+    let v: Vec<u8, 4> = hex::decode_heapless(
+        serde_json_core::from_slice::<json_rpc_types::Request<Vec<String<8>, 1>, String<64>>>(resp)
+            .map_err(Error::msg)?
+            .0
+            .params
+            .unwrap()
+            .pop()
+            .unwrap(),
+    )
+    .expect("decode error");
+    Ok(u32::from_be_bytes(v[0..4].try_into().unwrap()))
+}