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wait for new packets on the agent socket after the handler is invoked… (#267)

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* wait for new packets on the agent socket after the handler is invoked. this fixes https://github.com/maxgoedjen/secretive/issues/244

* handle closing of the socked

* fix compile

Co-authored-by: David Gunzinger <david.gunzinger@smoca.ch>
This commit is contained in:
David Gunzinger 2022-01-31 08:53:02 +01:00 committed by GitHub
parent 141cc03b60
commit 03d3cc9177
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 6 deletions
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9
Sources/Packages/Sources/SecretAgentKit/Agent.swift
View File

@ -30,20 +30,23 @@ extension Agent {
/// - 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) {
/// - Return value:
/// - Boolean if data could be read
public func handle(reader: FileHandleReader, writer: FileHandleWriter) -> Bool {
Logger().debug("Agent handling new data")
let data = Data(reader.availableData)
guard data.count > 4 else { return }
guard data.count > 4 else { return false}
let requestTypeInt = data[4]
guard let requestType = SSHAgent.RequestType(rawValue: requestTypeInt) else {
writer.write(OpenSSHKeyWriter().lengthAndData(of: SSHAgent.ResponseType.agentFailure.data))
Logger().debug("Agent returned \(SSHAgent.ResponseType.agentFailure.debugDescription)")
return
return true
}
Logger().debug("Agent handling request of type \(requestType.debugDescription)")
let subData = Data(data[5...])
let response = handle(requestType: requestType, data: subData, reader: reader)
writer.write(response)
return true
}
func handle(requestType: SSHAgent.RequestType, data: Data, reader: FileHandleReader) -> Data {

13
Sources/Packages/Sources/SecretAgentKit/SocketController.swift
View File

@ -9,7 +9,9 @@ public class SocketController {
/// The active SocketPort.
private var port: SocketPort?
/// A handler that will be notified when a new read/write handle is available.
public var handler: ((FileHandleReader, FileHandleWriter) -> Void)?
/// False if no data could be read
public var handler: ((FileHandleReader, FileHandleWriter) -> Bool)?
/// Initializes a socket controller with a specified path.
/// - Parameter path: The path to use as a socket.
@ -65,7 +67,7 @@ public class SocketController {
@objc func handleConnectionAccept(notification: Notification) {
Logger().debug("Socket controller accepted connection")
guard let new = notification.userInfo?[NSFileHandleNotificationFileHandleItem] as? FileHandle else { return }
handler?(new, new)
_ = handler?(new, new)
new.waitForDataInBackgroundAndNotify()
fileHandle?.acceptConnectionInBackgroundAndNotify(forModes: [RunLoop.current.currentMode!])
}
@ -76,7 +78,12 @@ public class SocketController {
Logger().debug("Socket controller has new data available")
guard let new = notification.object as? FileHandle else { return }
Logger().debug("Socket controller received new file handle")
handler?(new, new)
if((handler?(new, new)) == true) {
Logger().debug("Socket controller handled data, wait for more data")
new.waitForDataInBackgroundAndNotify()
} else {
Logger().debug("Socket controller called with empty data, socked closed")
}
}
}