fix(external-ssh-signer): apply fixes

Author: chirpcel

Diff for: asyncgit/Cargo.toml

@@ -32,10 +32,10 @@ rayon = "1.10"
 rayon-core = "1.12"
 scopetime = { path = "../scopetime", version = "0.1" }
 serde = { version = "1.0", features = ["derive"] }
+tempfile = "3"
 thiserror = "1.0"
 unicode-truncate = "1.0"
 url = "2.5"
-tempfile = "3"
 
 [dev-dependencies]
 env_logger = "0.11"

Diff for: asyncgit/src/sync/sign.rs

@@ -183,9 +183,7 @@ impl SignBuilder {
 		signing_key: &str,
 	) -> Result<PathBuf, SignBuilderError> {
 		let key_path = PathBuf::from(signing_key);
-		if key_path.is_file() {
-			Ok(key_path)
-		} else if signing_key.starts_with("ssh-") {
+		if signing_key.starts_with("ssh-") {
 			use std::io::Write;
 			use tempfile::NamedTempFile;
 			let mut temp_file =
@@ -200,9 +198,7 @@ impl SignBuilder {
 			})?;
 			Ok(temp_file.1)
 		} else {
-			Err(SignBuilderError::SSHSigningKey(String::from(
-  					"ssh key could not been resolved. Either the key is not a file or the key is not a valid public ssh key",
-  				)))
+			Ok(key_path)
 		}
 	}
 }
@@ -306,6 +302,10 @@ impl Sign for SSHSign {
 			.arg("-f")
 			.arg(&self.signing_key);
 
+		if &self.program == "ssh-keygen" {
+			cmd.arg("-P").arg("\"\"");
+		}
+
 		log::trace!("signing command: {cmd:?}");
 
 		let mut child = cmd
@@ -319,6 +319,8 @@ impl Sign for SSHSign {
 			.map_err(|e| SignError::WriteBuffer(e.to_string()))?;
 		drop(stdin);
 
+		//hllo
+
 		let output = child
 			.wait_with_output()
 			.map_err(|e| SignError::Output(e.to_string()))?;
@@ -332,11 +334,15 @@ impl Sign for SSHSign {
 		}
 
 		if !output.status.success() {
+			let error_msg = std::str::from_utf8(&output.stderr)
+				.unwrap_or("[error could not be read from stderr]");
+			if error_msg.contains("passphrase") {
+				return Err(SignError::Shellout(String::from("Currently, we only support unencrypted pairs of ssh keys in disk or ssh-agents")));
+			}
 			return Err(SignError::Shellout(format!(
 				"failed to sign data, program '{}' exited non-zero: {}",
 				&self.program,
-				std::str::from_utf8(&output.stderr)
-				    .unwrap_or("[error could not be read from stderr]")
+				error_msg
 			)));
 		}