From b74747d443d06c51da4dda75f7e06ed3369747ae Mon Sep 17 00:00:00 2001
From: RyanSquared <ryan@hashbang.sh>
Date: Sat, 5 Aug 2023 21:27:34 -0500
Subject: [PATCH] mnemonic-hash-checker: initial commit

---
 mnemonic-hash-checker/.gitignore  |    1 +
 mnemonic-hash-checker/Cargo.lock  | 1603 +++++++++++++++++++++++++++++
 mnemonic-hash-checker/Cargo.toml  |   19 +
 mnemonic-hash-checker/src/main.rs |   95 ++
 4 files changed, 1718 insertions(+)
 create mode 100644 mnemonic-hash-checker/.gitignore
 create mode 100644 mnemonic-hash-checker/Cargo.lock
 create mode 100644 mnemonic-hash-checker/Cargo.toml
 create mode 100644 mnemonic-hash-checker/src/main.rs

diff --git a/mnemonic-hash-checker/.gitignore b/mnemonic-hash-checker/.gitignore
new file mode 100644
index 0000000..eb5a316
--- /dev/null
+++ b/mnemonic-hash-checker/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/mnemonic-hash-checker/Cargo.lock b/mnemonic-hash-checker/Cargo.lock
new file mode 100644
index 0000000..36c11a8
--- /dev/null
+++ b/mnemonic-hash-checker/Cargo.lock
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+ "windows_i686_gnu",
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+ "windows_x86_64_gnullvm",
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diff --git a/mnemonic-hash-checker/Cargo.toml b/mnemonic-hash-checker/Cargo.toml
new file mode 100644
index 0000000..7d3bf3c
--- /dev/null
+++ b/mnemonic-hash-checker/Cargo.toml
@@ -0,0 +1,19 @@
+[package]
+name = "mnemonic-hash-checker"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+axum = { version = "0.6.20", features = ["headers", "macros", "tracing"] }
+clap = { version = "4.3.19", features = ["derive"] }
+color-eyre = "0.6.2"
+deadpool-postgres = "0.10.5"
+serde = { version = "1.0.181", features = ["serde_derive"] }
+tokio = { version = "1.29.1", features = ["full", "fs", "tracing"] }
+tokio-postgres = "0.7.8"
+tower-http = { version = "0.4.3", features = ["trace", "catch-panic"] }
+tracing = "0.1.37"
+tracing-error = "0.2.0"
+tracing-subscriber = { version = "0.3.17", features = ["env-filter", "fmt", "ansi", "json"] }
diff --git a/mnemonic-hash-checker/src/main.rs b/mnemonic-hash-checker/src/main.rs
new file mode 100644
index 0000000..f172472
--- /dev/null
+++ b/mnemonic-hash-checker/src/main.rs
@@ -0,0 +1,95 @@
+use std::net::SocketAddr;
+use std::sync::Arc;
+
+use axum::{extract::Path, routing::get, Extension, Json, Router};
+
+use color_eyre::eyre::Result;
+
+use deadpool_postgres::{Config, ManagerConfig, Pool, RecyclingMethod, Runtime};
+use tokio_postgres::NoTls;
+
+use tower_http::catch_panic::CatchPanicLayer;
+use tower_http::trace::TraceLayer;
+
+use tracing_subscriber::filter::{EnvFilter, LevelFilter};
+use tracing_subscriber::fmt::format::FmtSpan;
+use tracing_subscriber::prelude::*;
+
+use tracing::{debug, info};
+
+struct State {
+    pool: Pool,
+}
+
+fn setup_registry() {
+    let envfilter = EnvFilter::builder()
+        .with_default_directive(LevelFilter::DEBUG.into())
+        .from_env_lossy();
+    tracing_subscriber::registry()
+        .with(envfilter)
+        .with(tracing_subscriber::fmt::layer().with_span_events(FmtSpan::CLOSE))
+        .with(tracing_error::ErrorLayer::default())
+        .init();
+}
+
+#[tracing::instrument(skip(pool))]
+async fn check_hash(hash: &str, pool: &Pool) -> Result<bool> {
+    let client = pool.get().await?;
+    let query = client
+        .prepare_cached("SELECT hash FROM testing WHERE hash = $1")
+        .await?;
+    let rows = client.query(&query, &[&hash]).await?;
+    if let Some(row) = rows.get(0) {
+        let retrieved_hash: String = row.try_get(0)?;
+        Ok(hash == retrieved_hash)
+    } else {
+        Ok(false)
+    }
+}
+
+// Note: Exposes *zero* information of potential errors to clients.
+#[tracing::instrument(skip(hash, state))]
+async fn check_hash_slug(
+    Path(hash): Path<String>,
+    Extension(state): Extension<Arc<State>>,
+) -> Json<Option<bool>> {
+    let result = check_hash(&hash, &state.pool).await;
+    if let Err(e) = &result {
+        debug!(%e, "Error while performing lookup");
+    }
+    Json(result.ok())
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    setup_registry();
+    color_eyre::install()?;
+
+    let addr: SocketAddr = "0.0.0.0:8000".parse()?;
+    let mut config = Config::new();
+    config.dbname = Some("postgres".to_string());
+    config.host = Some("localhost".to_string());
+    config.password = Some("sandwich".to_string());
+    config.port = Some(5432);
+    config.user = Some("postgres".to_string());
+    config.manager = Some(ManagerConfig {
+        recycling_method: RecyclingMethod::Fast,
+    });
+    let pool = config.create_pool(Some(Runtime::Tokio1), NoTls)?;
+
+    let state = State { pool };
+
+    let app = Router::new()
+        .route("/check/:hash", get(check_hash_slug))
+        .layer(CatchPanicLayer::new())
+        .layer(Extension(Arc::new(state)))
+        .layer(TraceLayer::new_for_http());
+
+    info!("server go nyoom");
+
+    axum::Server::bind(&addr)
+        .serve(app.into_make_service())
+        .await?;
+
+    Ok(())
+}