finish basic Docker credential helper implementation

src-tauri/src/srv/creddy_server.rs

@@ -9,7 +9,11 @@ use crate::credentials::{
     DockerCredential,
 };
 use crate::errors::*;
-use crate::ipc::{Approval, RequestNotificationDetail};
+use crate::ipc::{
+    Approval,
+    RequestAction,
+    RequestNotificationDetail
+};
 use crate::shortcuts::{self, ShortcutAction};
 use crate::state::AppState;
 use super::{
@@ -58,10 +62,10 @@ async fn handle(
             server_url, client, app_handle, waiter
         ).await,
         CliRequest::StoreDockerCredential(docker_credential) => store_docker_credential(
-             docker_credential, app_handle, waiter
+             docker_credential, app_handle, client, waiter
         ).await,
         CliRequest::EraseDockerCredential { server_url } => erase_docker_credential(
-            server_url, app_handle, waiter
+            server_url, app_handle, client, waiter
         ).await,
         CliRequest::InvokeShortcut{ action } => invoke_shortcut(action).await,
     };
@@ -115,8 +119,8 @@ async fn get_docker_credential(
     waiter: CloseWaiter<'_>,
 ) -> Result<CliResponse, HandlerError> {
     let state = app_handle.state::<AppState>();
-    let credential_id = state.credential_id(&server_url).await.unwrap_or(None);
-    if  credential_id.is_none() {
+    let meta = state.docker_credential_meta(&server_url).await.unwrap_or(None);
+    if  meta.is_none() {
         return Err(
             HandlerError::NoCredentials(
                 GetCredentialsError::Load(
@@ -126,7 +130,11 @@ async fn get_docker_credential(
         );
     }
 
-    let detail = RequestNotificationDetail::new_docker(client, server_url.clone());
+    let detail = RequestNotificationDetail::new_docker(
+        RequestAction::Access,
+        client,
+        server_url.clone()
+    );
     let response = super::send_credentials_request(detail, app_handle.clone(), waiter).await?;
     match response.approval {
         Approval::Approved => {
@@ -142,22 +150,45 @@ async fn get_docker_credential(
 async fn store_docker_credential(
     docker_credential: DockerCredential,
     app_handle: AppHandle,
-    _waiter: CloseWaiter<'_>,
+    client: Client,
+    waiter: CloseWaiter<'_>,
 ) -> Result<CliResponse, HandlerError> {
     let state = app_handle.state::<AppState>();
 
-    // eventually ask the frontend to confirm here
+    // We want to do this before asking for confirmation from the user, because Docker has an annoying
+    // habit of calling `get` and then immediately turning around and calling `store` with the same
+    // data. In that case we want to avoid asking for confirmation at all.
+    match state.get_docker_credential(&docker_credential.server_url).await {
+        // if there is already a credential with this server_url, and it is unchanged, we're done
+        Ok(c) if c == docker_credential => return Ok(CliResponse::Empty),
+        // otherwise we are making an update, so proceed
+        Ok(_) => (),
+        // if the app is locked, then this isn't the situation described above, so proceed
+        Err(GetCredentialsError::Locked) => (),
+        // if the app is unlocked, and there is no matching credential, proceed
+        Err(GetCredentialsError::Load(LoadCredentialsError::NoCredentials)) => (),
+        // any other error is a failure
+        Err(e) => return Err(e.into()),
+    };
 
-    // for some reason Docker likes to call `store` immediately with whatever it gets
-    // back from every `get` operation, so we have to check for an existing credential
-    let id = state.credential_id(&docker_credential.server_url)
+    let detail = RequestNotificationDetail::new_docker(
+        RequestAction::Save,
+        client,
+        docker_credential.server_url.clone(),
+    );
+    let response = super::send_credentials_request(detail, app_handle.clone(), waiter).await?;
+    if matches!(response.approval, Approval::Denied) {
+        return Err(HandlerError::Denied);
+    }
+
+    let (id, name) = state.docker_credential_meta(&docker_credential.server_url)
         .await
         .map_err(|e| GetCredentialsError::Load(e))?
-        .unwrap_or_else(|| credentials::random_uuid());
+        .unwrap_or_else(|| (credentials::random_uuid(), docker_credential.server_url.clone()));
 
     let record = CredentialRecord {
         id,
-        name: docker_credential.server_url.clone(),
+        name,
         is_default: false,
         credential: Credential::Docker(docker_credential)
     };
@@ -169,12 +200,24 @@ async fn store_docker_credential(
 async fn erase_docker_credential(
     server_url: String,
     app_handle: AppHandle,
-    _waiter: CloseWaiter<'_>
+    client: Client,
+    waiter: CloseWaiter<'_>
 ) -> Result<CliResponse, HandlerError> {
     let state = app_handle.state::<AppState>();
 
-    // eventually ask the frontend to confirm here
-
-    state.delete_credential_by_name(&server_url).await?;
-    Ok(CliResponse::Empty)
+    let detail = RequestNotificationDetail::new_docker(
+        RequestAction::Delete,
+        client,
+        server_url.clone(),
+    );
+    let resp = super::send_credentials_request(detail, app_handle.clone(), waiter).await?;
+    match resp.approval {
+        Approval::Approved => {
+            state.delete_credential_by_name(&server_url).await?;
+            Ok(CliResponse::Empty)
+        }
+        Approval::Denied => {
+            Err(HandlerError::Denied)
+        }
+    }
 }