add some more daemon methods

nevmes-core/.rustfmt.toml

@@ -0,0 +1,5 @@
+# cargo +nightly fmt
+format_code_in_doc_comments = true
+imports_granularity = "Crate"
+imports_layout = "Vertical"
+wrap_comments = true

nevmes-core/src/lib.rs

@@ -1,16 +1,16 @@
-pub mod args; // command line arguments
-pub mod auth; // internal auth repo/service layer
-pub mod contact; // contact repo/service layer
-pub mod db; // lmdb interface
-pub mod gpg; // gpgme interface
-pub mod i2p; // i2p repo/service layer
-pub mod message; // message repo/service layer
-pub mod models; // db structs
-pub mod monero; // monero-wallet-rpc interface
-pub mod proof; // external auth/payment proof module
-pub mod reqres; // http request/responses
-pub mod user;
-pub mod utils; // misc. // user rep/service layer
+pub mod args;       // command line arguments
+pub mod auth;       // internal auth repo/service layer
+pub mod contact;    // contact repo/service layer
+pub mod db;         // lmdb interface
+pub mod gpg;        // gpgme interface
+pub mod i2p;        // i2p repo/service layer
+pub mod message;    // message repo/service layer
+pub mod models;     // db structs
+pub mod monero;     // monero-wallet-rpc interface
+pub mod proof;      // external auth/payment proof module
+pub mod reqres;     // http request/responses
+pub mod user;       // misc.
+pub mod utils;      // user rep/service layer
 
 pub const NEVMES_JWP_SECRET_KEY: &str = "NEVMES_JWP_SECRET_KEY";
 pub const NEVMES_JWT_SECRET_KEY: &str = "NEVMES_JWT_SECRET_KEY";

nevmes-core/src/monero.rs

@@ -2,11 +2,7 @@ use crate::{
     args,
     proof,
     reqres,
-    utils::{
-        self,
-        get_release_env,
-        ReleaseEnvironment,
-    },
+    utils,
 };
 use clap::Parser;
 use diqwest::WithDigestAuth;
@@ -80,7 +76,10 @@ impl RpcFields {
 }
 
 enum DaemonFields {
+    GetBlock,
+    GetHeight,
     GetInfo,
+    GetTransactions,
     Id,
     Version,
 }
@@ -88,7 +87,10 @@ enum DaemonFields {
 impl DaemonFields {
     pub fn value(&self) -> String {
         match *self {
+            DaemonFields::GetBlock => String::from("get_block"),
+            DaemonFields::GetHeight => String::from("get_height"),
             DaemonFields::GetInfo => String::from("get_info"),
+            DaemonFields::GetTransactions => String::from("get_transactions"),
             DaemonFields::Id => String::from("0"),
             DaemonFields::Version => String::from("2.0"),
         }
@@ -114,8 +116,8 @@ pub fn start_daemon() {
     info!("starting monerod");
     let blockchain_dir = get_blockchain_dir();
     let bin_dir = get_monero_location();
-    let release_env = get_release_env();
-    if release_env == ReleaseEnvironment::Development {
+    let release_env = utils::get_release_env();
+    if release_env == utils::ReleaseEnvironment::Development {
         let args = ["--data-dir", &blockchain_dir, "--stagenet", "--detach"];
         let output = Command::new(format!("{}/monerod", bin_dir))
             .args(args)
@@ -144,8 +146,8 @@ pub fn start_rpc() {
         "/home/{}/.nevmes/stagenet/wallet/",
         std::env::var("USER").unwrap_or(String::from("user")),
     );
-    let release_env = get_release_env();
-    if release_env == ReleaseEnvironment::Development {
+    let release_env = utils::get_release_env();
+    if release_env == utils::ReleaseEnvironment::Development {
         let args = [
             "--rpc-bind-port",
             &port,
@@ -942,3 +944,73 @@ pub async fn get_info() -> reqres::XmrDaemonGetInfoResponse {
         Err(_) => Default::default(),
     }
 }
+
+/// Performs the xmr daemon 'get_height' method
+pub async fn get_height() -> reqres::XmrDaemonGetHeightResponse {
+    info!("fetching daemon height");
+    let client = reqwest::Client::new();
+    let host = get_rpc_daemon();
+    let req = reqres::XmrRpcRequest {
+        jsonrpc: DaemonFields::Version.value(),
+        id: DaemonFields::Id.value(),
+        method: DaemonFields::GetHeight.value(),
+    };
+    match client.post(host).json(&req).send().await {
+        Ok(response) => {
+            let res = response.json::<reqres::XmrDaemonGetHeightResponse>().await;
+            debug!("{} response: {:?}", DaemonFields::GetHeight.value(), res);
+            match res {
+                Ok(res) => res,
+                _ => Default::default(),
+            }
+        }
+        Err(_) => Default::default(),
+    }
+}
+
+/// Performs the xmr daemon 'get_block' method
+pub async fn get_block(height: u64) -> reqres::XmrDaemonGetBlockResponse {
+    info!("fetching block at height: {}", height);
+    let client = reqwest::Client::new();
+    let host = get_rpc_daemon();
+    let params: reqres::XmrDaemonGetBlockParams = reqres::XmrDaemonGetBlockParams { height };
+    let req = reqres::XmrDaemonGetBlockRequest {
+        jsonrpc: DaemonFields::Version.value(),
+        id: DaemonFields::Id.value(),
+        method: DaemonFields::GetBlock.value(),
+        params,
+    };
+    match client.post(host).json(&req).send().await {
+        Ok(response) => {
+            let res = response.json::<reqres::XmrDaemonGetBlockResponse>().await;
+            debug!("{} response: {:?}", DaemonFields::GetBlock.value(), res);
+            match res {
+                Ok(res) => res,
+                _ => Default::default(),
+            }
+        }
+        Err(_) => Default::default(),
+    }
+}
+
+/// Performs the xmr daemon 'get_transactions' method
+pub async fn get_transactions(txs_hashes: Vec<String>) -> reqres::XmrDaemonGetTransactionsResponse {
+    info!("fetching {} transactions", txs_hashes.len());
+    let client = reqwest::Client::new();
+    let host = get_rpc_daemon();
+    let req = reqres::XmrDaemonGetTransactionsRequest {
+        txs_hashes,
+        decode_as_json: true,
+    };
+    match client.post(host).json(&req).send().await {
+        Ok(response) => {
+            let res = response.json::<reqres::XmrDaemonGetTransactionsResponse>().await;
+            debug!("{} response: {:?}", DaemonFields::GetTransactions.value(), res);
+            match res {
+                Ok(res) => res,
+                _ => Default::default(),
+            }
+        }
+        Err(_) => Default::default(),
+    }
+}

nevmes-core/src/reqres.rs

@@ -7,6 +7,8 @@ use serde::{
 // All http requests and responses are here
 
 // START XMR Structs
+// Reference: https://www.getmonero.org/resources/developer-guides/wallet-rpc.html
+//            https://www.getmonero.org/resources/developer-guides/daemon-rpc.html
 
 // params
 #[derive(Deserialize, Serialize, Debug)]
@@ -121,6 +123,11 @@ pub struct XmrRpcCreateAddressParams {
     pub account_index: u8,
 }
 
+#[derive(Deserialize, Serialize, Debug)]
+pub struct XmrDaemonGetBlockParams {
+    pub height: u64,
+}
+
 // requests
 #[derive(Deserialize, Serialize, Debug)]
 pub struct XmrRpcValidateAddressRequest {
@@ -153,6 +160,20 @@ pub struct XmrRpcRequest {
     pub method: String,
 }
 
+#[derive(Deserialize, Serialize, Debug)]
+pub struct XmrDaemonGetBlockRequest {
+    pub jsonrpc: String,
+    pub id: String,
+    pub method: String,
+    pub params: XmrDaemonGetBlockParams, 
+}
+
+#[derive(Deserialize, Serialize, Debug)]
+pub struct XmrDaemonGetTransactionsRequest {
+    pub txs_hashes: Vec<String>,
+    pub decode_as_json: bool,
+}
+
 #[derive(Deserialize, Serialize, Debug)]
 pub struct XmrRpcAddressRequest {
     pub jsonrpc: String,
@@ -478,7 +499,94 @@ pub struct XmrDaemonGetInfoResult {
     pub wide_difficulty: String,
 }
 
+#[derive(Serialize, Deserialize, Debug)]
+pub struct BlockHeader {
+    pub block_size: u32,
+    pub block_weight: u32,
+    pub cumulative_difficulty: u128,
+    pub cumulative_difficulty_top64: u128,
+    pub depth: u32,
+    pub difficulty: u128,
+    pub difficulty_top64: u128,
+    pub hash: String,
+    pub height: u64,
+    pub long_term_weight: u64,
+    pub major_version: u32,
+    pub miner_tx_hash: String,
+    pub minor_version: u32,
+    pub nonce: u32,
+    pub num_txes: u64,
+    pub orphan_status: bool,
+    pub pow_hash: String,
+    pub prev_hash: String,
+    pub reward: u64,
+    pub timestamp: u64,
+    pub wide_cumulative_difficulty: String,
+    pub wide_difficulty: String,
+}
+
+impl Default for BlockHeader {
+    fn default() -> Self {
+        BlockHeader {
+            block_size: 0,
+            block_weight: 0,
+            cumulative_difficulty: 0,
+            cumulative_difficulty_top64: 0,
+            depth: 0,
+            difficulty: 0,
+            difficulty_top64: 0,
+            hash: utils::empty_string(),
+            height: 0,
+            long_term_weight: 0,
+            major_version: 0,
+            miner_tx_hash: utils::empty_string(),
+            minor_version: 0,
+            nonce: 0,
+            num_txes: 0,
+            orphan_status: false,
+            pow_hash: utils::empty_string(),
+            prev_hash: utils::empty_string(),
+            reward: 0,
+            timestamp: 0,
+            wide_cumulative_difficulty: utils::empty_string(),
+            wide_difficulty: utils::empty_string(),
+        }
+    }
+}
+
+#[derive(Deserialize, Debug)]
+pub struct XmrDaemonGetBlockResult {
+    pub blob: String,
+    pub block_header: BlockHeader,
+    pub credits: u64,
+    pub json: String, 
+    pub miner_tx_hash: String,
+    pub status: String,
+    pub top_hash: String,
+    pub tx_hashes: Vec<String>,
+    pub untrusted: bool, 
+}
 // responses
+
+#[derive(Deserialize, Debug)]
+pub struct XmrDaemonGetHeightResponse {
+    pub hash: String,
+    pub height: u64,
+    pub status: String,
+    pub untrusted: bool,
+}
+
+impl Default for XmrDaemonGetHeightResponse {
+    fn default() -> Self {
+        XmrDaemonGetHeightResponse {
+            hash: utils::empty_string(),
+            height: 0,
+            status: utils::empty_string(),
+            untrusted: false,
+        }
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct XmrDaemonGetInfoResponse {
     pub result: XmrDaemonGetInfoResult,
@@ -535,6 +643,42 @@ impl Default for XmrDaemonGetInfoResponse {
     }
 }
 
+#[derive(Deserialize, Debug)]
+pub struct XmrDaemonGetBlockResponse {
+    pub result: XmrDaemonGetBlockResult,
+}
+
+impl Default for XmrDaemonGetBlockResponse {
+    fn default() -> Self {
+        XmrDaemonGetBlockResponse {
+            result: XmrDaemonGetBlockResult {
+                blob: utils::empty_string(),
+                block_header: Default::default(),
+                credits: 0,
+                json: utils::empty_string(), 
+                miner_tx_hash: utils::empty_string(),
+                status: utils::empty_string(),
+                top_hash: utils::empty_string(),
+                tx_hashes: Vec::new(),
+                untrusted: false, 
+            }
+        }
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct XmrDaemonGetTransactionsResponse {
+    pub txs_as_json: Vec<String>,
+}
+
+impl Default for XmrDaemonGetTransactionsResponse {
+    fn default() -> Self {
+        XmrDaemonGetTransactionsResponse {
+            txs_as_json: Vec::new(),
+        }
+    }
+}
+
 #[derive(Deserialize, Debug)]
 pub struct XmrRpcVerifyResponse {
     pub result: XmrRpcVerifyResult,

nevmes-core/src/utils.rs

@@ -592,3 +592,32 @@ fn validate_installation_hash(sw: ExternalSoftware, filename: &String) -> bool {
     debug!("expected hash: {}", expected_hash);
     actual_hash == expected_hash
 }
+
+/// The highly ineffecient fee estimator.
+/// 
+/// Get the current height. Start fetching blocks
+/// 
+/// and checking the number of transactions. If
+/// 
+/// there were non-coinbase transactions in the block
+/// 
+/// extract the `txnFee` from the `as_json` field.
+/// 
+/// Once we have accumulated n=30 fees paid return the
+/// 
+/// average fee paid from the most recent 30 transactions.
+/// 
+/// Note, it may take more than one block to do this,
+/// 
+/// especially on stagenet.
+pub fn estimate_fee() -> u128 {
+
+    0
+}
+
+/// Combine the results `estimate_fee()` and `get_balance()` to
+/// 
+/// determine whether or not a transfer is possible.
+pub fn can_transfer() -> bool {
+    false
+}