From 483d4376270f8011f244b6a2307e3e609cb0cad6 Mon Sep 17 00:00:00 2001
From: Blaine Heffron <baheffron@gmail.com>
Date: Wed, 3 Jul 2024 18:32:00 -0400
Subject: [PATCH] add tx hash command

---
 .../soroban-test/tests/it/integration/tx.rs   | 19 +++++++++++
 cmd/soroban-cli/src/commands/tx/hash.rs       | 33 +++++++++++++++++++
 cmd/soroban-cli/src/commands/tx/mod.rs        |  7 ++++
 3 files changed, 59 insertions(+)
 create mode 100644 cmd/soroban-cli/src/commands/tx/hash.rs

diff --git a/cmd/crates/soroban-test/tests/it/integration/tx.rs b/cmd/crates/soroban-test/tests/it/integration/tx.rs
index 9f5204a8db..bcb880b18c 100644
--- a/cmd/crates/soroban-test/tests/it/integration/tx.rs
+++ b/cmd/crates/soroban-test/tests/it/integration/tx.rs
@@ -30,3 +30,22 @@ async fn txn_simulate() {
         assembled_str
     );
 }
+
+#[tokio::test]
+async fn txn_hash() {
+    let sandbox = &TestEnv::new();
+
+    let xdr_base64 = "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";
+
+    let expected_hash = "bcc9fa60c8f6607c981d6e1c65d77ae07617720113f9080fe5883d8e4a331a68";
+
+    let hash = sandbox
+        .new_assert_cmd("tx")
+        .arg("hash")
+        .write_stdin(xdr_base64.as_bytes())
+        .assert()
+        .success()
+        .stdout_as_str();
+
+    assert_eq!(hash.trim(), expected_hash);
+}
diff --git a/cmd/soroban-cli/src/commands/tx/hash.rs b/cmd/soroban-cli/src/commands/tx/hash.rs
new file mode 100644
index 0000000000..f8d0d7a5ac
--- /dev/null
+++ b/cmd/soroban-cli/src/commands/tx/hash.rs
@@ -0,0 +1,33 @@
+use crate::{commands::global, utils::transaction_hash};
+use hex;
+
+#[derive(thiserror::Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    TxEnvelopeFromStdin(#[from] super::xdr::Error),
+    #[error(transparent)]
+    XdrToBase64(#[from] soroban_env_host::xdr::Error),
+    #[error(transparent)]
+    Config(#[from] super::super::config::Error),
+}
+
+// Command to return the transaction hash submitted to a network
+/// e.g. `cat file.txt | soroban tx hash`
+#[derive(Debug, clap::Parser, Clone, Default)]
+#[group(skip)]
+pub struct Cmd {
+    #[clap(flatten)]
+    pub config: super::super::config::Args,
+}
+
+impl Cmd {
+    pub fn run(&self, _global_args: &global::Args) -> Result<(), Error> {
+        let tx = super::xdr::unwrap_envelope_v1(super::xdr::tx_envelope_from_stdin()?)?;
+        let network = &self.config.get_network()?;
+        println!(
+            "{}",
+            hex::encode(transaction_hash(&tx, &network.network_passphrase)?)
+        );
+        Ok(())
+    }
+}
diff --git a/cmd/soroban-cli/src/commands/tx/mod.rs b/cmd/soroban-cli/src/commands/tx/mod.rs
index 48161e3c76..59f07228ad 100644
--- a/cmd/soroban-cli/src/commands/tx/mod.rs
+++ b/cmd/soroban-cli/src/commands/tx/mod.rs
@@ -2,6 +2,7 @@ use clap::Parser;
 
 use super::global;
 
+pub mod hash;
 pub mod simulate;
 pub mod xdr;
 
@@ -9,6 +10,8 @@ pub mod xdr;
 pub enum Cmd {
     /// Simulate a transaction envelope from stdin
     Simulate(simulate::Cmd),
+    /// Calculate the hash of a transaction envelope from stdin
+    Hash(hash::Cmd),
 }
 
 #[derive(thiserror::Error, Debug)]
@@ -16,12 +19,16 @@ pub enum Error {
     /// An error during the simulation
     #[error(transparent)]
     Simulate(#[from] simulate::Error),
+    /// An error during hash calculation
+    #[error(transparent)]
+    Hash(#[from] hash::Error),
 }
 
 impl Cmd {
     pub async fn run(&self, global_args: &global::Args) -> Result<(), Error> {
         match self {
             Cmd::Simulate(cmd) => cmd.run(global_args).await?,
+            Cmd::Hash(cmd) => cmd.run(global_args)?,
         };
         Ok(())
     }