Optional Tor Send/Listen Functionality (#226)

* udpate for beta release

* initial tor explorations

* rustfmt

* basic tor tx send working

* rustfmt

* add tor proxy info to config file

* rustfmt

* add utilities to output tor hidden service configuration files

* output tor config as part of listener startup

* rustfmt

* fully automate config and startup of tor process

* rustfmt

* remove unnecessary process kill commands from listener

* rustfmt

* assume defaults for tor sending config if section doesn't exist in grin-wallet.toml

* rustfmt

* ignore tor dev test

* update default paths output by config, compilation + confirmed working on windows

* rustfmt

* fix on osx/unix

* add timeout to tor connector, remove unwrap in client

* allow specifiying tor address without 'http://[].onion' on the command line

* fix api test

* rustfmt

* update address derivation path as per spec

* rustfmt

* move tor init to separate function

* rustfmt

* re-ignore tor dev test

* listen on tor by default if tor available

* rustfmt

* test fix

* remove explicit send via tor flag, and assume tor if address fits

* rustfmt

config/src/types.rs

@@ -138,6 +138,26 @@ impl fmt::Display for ConfigError {
 	}
 }
 
+/// Tor configuration
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct TorConfig {
+	/// Whether to start tor listener on listener startup (default true)
+	pub use_tor_listener: bool,
+	/// Just the address of the socks proxy for now
+	pub socks_proxy_addr: String,
+	/// Send configuration directory
+	pub send_config_dir: String,
+}
+
+impl Default for TorConfig {
+	fn default() -> TorConfig {
+		TorConfig {
+			use_tor_listener: true,
+			socks_proxy_addr: "127.0.0.1:59050".to_owned(),
+			send_config_dir: ".".into(),
+		}
+	}
+}
 impl From<io::Error> for ConfigError {
 	fn from(error: io::Error) -> ConfigError {
 		ConfigError::FileIOError(
@@ -162,6 +182,8 @@ pub struct GlobalWalletConfigMembers {
 	/// Wallet configuration
 	#[serde(default)]
 	pub wallet: WalletConfig,
+	/// Tor config
+	pub tor: Option<TorConfig>,
 	/// Logging config
 	pub logging: Option<LoggingConfig>,
 }