Refactor key management (#3296)

* Add Call type to extensible transactions.

Cleanup some naming

* Merge Resource and BlockExhausted into just Exhausted

* Fix

* Another fix

* Call

* Some fixes

* Fix srml tests.

* Fix all tests.

* Refactor crypto so each application of it has its own type.

* Introduce new AuthorityProvider API into Aura

This will eventually allow for dynamic determination of authority
keys and avoid having to set them directly on CLI.

* Introduce authority determinator for Babe.

Experiment with modular consensus API.

* Work in progress to introduce KeyTypeId and avoid polluting API
with validator IDs

* Finish up drafting imonline

* Rework offchain workers API.

* Rework API implementation.

* Make it compile for wasm, simplify app_crypto.

* Fix compilation of im-online.

* Fix compilation of im-online.

* Fix more compilation errors.

* Make it compile.

* Fixing tests.

* Rewrite `keystore`

* Fix session tests

* Bring back `TryFrom`'s'

* Fix `srml-grandpa`

* Fix `srml-aura`

* Fix consensus babe

* More fixes

* Make service generate keys from dev_seed

* Build fixes

* Remove offchain tests

* More fixes and cleanups

* Fixes finality grandpa

* Fix `consensus-aura`

* Fix cli

* Fix `node-cli`

* Fix chain_spec builder

* Fix doc tests

* Add authority getter for grandpa.

* Test fix

* Fixes

* Make keystore accessible from the runtime

* Move app crypto to its own crate

* Update `Cargo.lock`

* Make the crypto stuff usable from the runtime

* Adds some runtime crypto tests

* Use last finalized block for grandpa authority

* Fix warning

* Adds `SessionKeys` runtime api

* Remove `FinalityPair` and `ConsensusPair`

* Minor governance tweaks to get it inline with docs.

* Make the governance be up to date with the docs.

* Build fixes.

* Generate the inital session keys

* Failing keystore is a hard error

* Make babe work again

* Fix grandpa

* Fix tests

* Disable `keystore` in consensus critical stuff

* Build fix.

* ImOnline supports multiple authorities at once.

* Update core/application-crypto/src/ed25519.rs

* Merge branch 'master' into gav-in-progress

* Remove unneeded code for now.

* Some `session` testing

* Support querying the public keys

* Cleanup offchain

* Remove warnings

* More cleanup

* Apply suggestions from code review

Co-Authored-By: Benjamin Kampmann <ben.kampmann@googlemail.com>

* More cleanups

* JSONRPC API for setting keys.

Also, rename traits::KeyStore* -> traits::BareCryptoStore*

* Bad merge

* Fix integration tests

* Fix test build

* Test fix

* Fixes

* Warnings

* Another warning

* Bump version.

substrate/core/cli/src/lib.rs

@@ -366,6 +366,24 @@ fn input_keystore_password() -> Result<String, String> {
 		.map_err(|e| format!("{:?}", e))
 }
 
+/// Fill the password field of the given config instance.
+fn fill_config_keystore_password<C, G>(
+	config: &mut service::Configuration<C, G>,
+	cli: &RunCmd,
+) -> Result<(), String> {
+	config.keystore_password = if cli.password_interactive {
+		Some(input_keystore_password()?.into())
+	} else if let Some(ref file) = cli.password_filename {
+		Some(fs::read_to_string(file).map_err(|e| format!("{}", e))?.into())
+	} else if let Some(ref password) = cli.password {
+		Some(password.clone().into())
+	} else {
+		None
+	};
+
+	Ok(())
+}
+
 fn create_run_node_config<F, S>(
 	cli: RunCmd, spec_factory: S, impl_name: &'static str, version: &VersionInfo
 ) -> error::Result<FactoryFullConfiguration<F>>
@@ -375,9 +393,8 @@ where
 {
 	let spec = load_spec(&cli.shared_params, spec_factory)?;
 	let mut config = service::Configuration::default_with_spec(spec.clone());
-	if cli.interactive_password {
-		config.password = input_keystore_password()?.into()
-	}
+
+	fill_config_keystore_password(&mut config, &cli)?;
 
 	config.impl_name = impl_name;
 	config.impl_commit = version.commit;
@@ -401,7 +418,9 @@ where
 
 	let base_path = base_path(&cli.shared_params, version);
 
-	config.keystore_path = cli.keystore_path.or_else(|| Some(keystore_path(&base_path, config.chain_spec.id())));
+	config.keystore_path = cli.keystore_path.unwrap_or_else(
+		|| keystore_path(&base_path, config.chain_spec.id())
+	);
 
 	config.database_path = db_path(&base_path, config.chain_spec.id());
 	config.database_cache_size = cli.database_cache_size;
@@ -462,17 +481,13 @@ where
 		cli.pool_config,
 	)?;
 
-	if let Some(key) = cli.key {
-		config.keys.push(key);
+
+	if cli.shared_params.dev {
+		config.dev_key_seed = cli.keyring.account
+			.map(|a| format!("//{}", a))
+			.or_else(|| Some("//Alice".into()));
 	}
 
-	if cli.shared_params.dev && cli.keyring.account.is_none() {
-		config.keys.push("//Alice".into());
-	}
-
-	if let Some(account) = cli.keyring.account {
-		config.keys.push(format!("//{}", account));
-	}
 
 	let rpc_interface: &str = if cli.rpc_external { "0.0.0.0" } else { "127.0.0.1" };
 	let ws_interface: &str = if cli.ws_external { "0.0.0.0" } else { "127.0.0.1" };