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This commit is contained in:
Max Goedjen 2022-01-01 22:46:24 -08:00
parent 37c39767b5
commit c355fb4b90
No known key found for this signature in database
GPG Key ID: E58C21DD77B9B8E8
1 changed files with 20 additions and 0 deletions
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20
Sources/Packages/Sources/SecretAgentKit/Agent.swift
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@ -4,6 +4,7 @@ import OSLog
import SecretKit
import AppKit
/// The `Agent` is an implementation of an SSH agent. It manages coordination and access between a socket, traces requests, notifies witnesses and passes requests to stores.
public class Agent {
private let storeList: SecretStoreList
@ -11,6 +12,10 @@ public class Agent {
private let writer = OpenSSHKeyWriter()
private let requestTracer = SigningRequestTracer()
/// Initializes an agent with a store list and a witness.
/// - Parameters:
/// - storeList: The `SecretStoreList` to make available.
/// - witness: A witness to notify of requests.
public init(storeList: SecretStoreList, witness: SigningWitness? = nil) {
Logger().debug("Agent is running")
self.storeList = storeList
@ -21,6 +26,10 @@ public class Agent {
extension Agent {
/// Handles an incoming request.
/// - Parameters:
/// - reader: A ``FileHandleReader`` to read the content of the request.
/// - writer: A ``FileHandleWriter`` to write the response to.
public func handle(reader: FileHandleReader, writer: FileHandleWriter) {
Logger().debug("Agent handling new data")
let data = Data(reader.availableData)
@ -64,6 +73,8 @@ extension Agent {
extension Agent {
/// Lists the identities available for signing operations
/// - Returns: An OpenSSH formatted Data payload listing the identities available for signing operations.
func identities() -> Data {
let secrets = storeList.stores.flatMap(\.secrets)
var count = UInt32(secrets.count).bigEndian
@ -80,6 +91,11 @@ extension Agent {
return countData + keyData
}
/// Notifies witnesses of a pending signature request, and performs the signing operation if none object.
/// - Parameters:
/// - data: The data to sign.
/// - provenance: A ``SecretKit.SigningRequestProvenance`` object describing the origin of the request.
/// - Returns: An OpenSSH formatted Data payload containing the signed data response.
func sign(data: Data, provenance: SigningRequestProvenance) throws -> Data {
let reader = OpenSSHReader(data: data)
let hash = reader.readNextChunk()
@ -147,6 +163,9 @@ extension Agent {
extension Agent {
/// Finds a ``Secret`` matching a specified hash whos signature was requested.
/// - Parameter hash: The hash to match against.
/// - Returns: A ``Secret`` and the ``SecretStore`` containing it, if a match is found.
func secret(matching hash: Data) -> (AnySecretStore, AnySecret)? {
storeList.stores.compactMap { store -> (AnySecretStore, AnySecret)? in
let allMatching = store.secrets.filter { secret in
@ -164,6 +183,7 @@ extension Agent {
extension Agent {
/// An error involving agent operations..
enum AgentError: Error {
case unhandledType
case noMatchingKey