CLI for Signer interface (#1980)

* # This is a combination of 2 commits.
# The first commit's message is:

CLI to specify signer interface

# This is the 2nd commit message:

Fixing paths on windows

* CLI to specify signer interface

parity/cli.rs

@@ -73,6 +73,9 @@ Account Options:
                            Signer UIs.
   --signer-port PORT       Specify the port of Trusted Signer server
                            [default: 8180].
+  --signer-interface IP    Specify the hostname portion of the Trusted Signer
+                           server, IP should be an interface's IP address,
+                           or local [default: local].
   --signer-path PATH       Specify directory where Signer UIs tokens should
                            be stored. [default: $HOME/.parity/signer]
   --signer-no-validation   Disable Origin and Host headers validation for
@@ -349,6 +352,7 @@ pub struct Args {
 	pub flag_force_signer: bool,
 	pub flag_no_signer: bool,
 	pub flag_signer_port: u16,
+	pub flag_signer_interface: String,
 	pub flag_signer_path: String,
 	pub flag_signer_no_validation: bool,
 	pub flag_force_sealing: bool,
@@ -371,7 +375,7 @@ pub struct Args {
 	pub flag_version: bool,
 	pub flag_from: String,
 	pub flag_to: String,
-  pub flag_at: String,
+	pub flag_at: String,
 	pub flag_format: Option<String>,
 	pub flag_jitvm: bool,
 	pub flag_log_file: Option<String>,

parity/configuration.rs

@@ -345,6 +345,7 @@ impl Configuration {
 		SignerConfiguration {
 			enabled: self.signer_enabled(),
 			port: self.args.flag_signer_port,
+			interface: self.signer_interface(),
 			signer_path: self.directories().signer,
 			skip_origin_validation: self.args.flag_signer_no_validation,
 		}
@@ -573,6 +574,13 @@ impl Configuration {
 		}
 	}
 
+	fn signer_interface(&self) -> String {
+		match self.args.flag_signer_interface.as_str() {
+			"local" => "127.0.0.1",
+			x => x,
+		}.into()
+	}
+
 	fn rpc_interface(&self) -> String {
 		match self.network_settings().rpc_interface.as_str() {
 			"all" => "0.0.0.0",
@@ -614,6 +622,7 @@ mod tests {
 	use ethcore::client::{VMType, BlockID};
 	use helpers::{replace_home, default_network_config};
 	use run::RunCmd;
+	use signer::Configuration as SignerConfiguration;
 	use blockchain::{BlockchainCmd, ImportBlockchain, ExportBlockchain, DataFormat};
 	use presale::ImportWallet;
 	use account::{AccountCmd, NewAccount, ImportAccounts};
@@ -876,16 +885,44 @@ mod tests {
 	}
 
 	#[test]
-	fn should_parse_signer_allow_all_flag() {
+	fn should_parse_signer_configration() {
 		// given
 
 		// when
-		let conf0 = parse(&["parity", "--signer-no-validation"]);
-		let conf1 = parse(&["parity"]);
+		let conf0 = parse(&["parity", "--signer-path", "signer"]);
+		let conf1 = parse(&["parity", "--signer-path", "signer", "--signer-no-validation"]);
+		let conf2 = parse(&["parity", "--signer-path", "signer", "--signer-port", "3123"]);
+		let conf3 = parse(&["parity", "--signer-path", "signer", "--signer-interface", "test"]);
 
 		// then
-		assert_eq!(conf0.args.flag_signer_no_validation, true);
-		assert_eq!(conf1.args.flag_signer_no_validation, false);
+		assert_eq!(conf0.signer_config(), SignerConfiguration {
+			enabled: true,
+			port: 8180,
+			interface: "127.0.0.1".into(),
+			signer_path: "signer".into(),
+			skip_origin_validation: false,
+		});
+		assert_eq!(conf1.signer_config(), SignerConfiguration {
+			enabled: true,
+			port: 8180,
+			interface: "127.0.0.1".into(),
+			signer_path: "signer".into(),
+			skip_origin_validation: true,
+		});
+		assert_eq!(conf2.signer_config(), SignerConfiguration {
+			enabled: true,
+			port: 3123,
+			interface: "127.0.0.1".into(),
+			signer_path: "signer".into(),
+			skip_origin_validation: false,
+		});
+		assert_eq!(conf3.signer_config(), SignerConfiguration {
+			enabled: true,
+			port: 8180,
+			interface: "test".into(),
+			signer_path: "signer".into(),
+			skip_origin_validation: false,
+		});
 	}
 
 	#[test]

parity/signer.rs

@@ -31,6 +31,7 @@ const CODES_FILENAME: &'static str = "authcodes";
 pub struct Configuration {
 	pub enabled: bool,
 	pub port: u16,
+	pub interface: String,
 	pub signer_path: String,
 	pub skip_origin_validation: bool,
 }
@@ -40,6 +41,7 @@ impl Default for Configuration {
 		Configuration {
 			enabled: true,
 			port: 8180,
+			interface: "127.0.0.1".into(),
 			signer_path: replace_home("$HOME/.parity/signer"),
 			skip_origin_validation: false,
 		}
@@ -82,7 +84,7 @@ fn generate_new_token(path: String) -> io::Result<String> {
 }
 
 fn do_start(conf: Configuration, deps: Dependencies) -> Result<SignerServer, String> {
-	let addr = try!(format!("127.0.0.1:{}", conf.port)
+	let addr = try!(format!("{}:{}", conf.interface, conf.port)
 		.parse()
 		.map_err(|_| format!("Invalid port specified: {}", conf.port)));