frontend/.github/workflows/build_app_android.yaml

@@ -39,11 +39,23 @@ jobs:
           # remove the 'v' prefix from the tag name
           echo "BUILD_NAME=${REF_NAME//v}" >> $GITHUB_ENV
 
-      - name: Load secrets from github
+      - name: Load secrets
+        id: load-secrets
+        uses: hashicorp/vault-action@v3
+        with:
+          url: https://api.hashicorp.com
+          token: ${{ secrets.VAULT_TOKEN }}
+          secrets: |
+            secret/release GOOGLE_MAPS_API_KEY | GOOGLE_MAPS_API_KEY ;
+            secret/release ANDROID_SECRET_PROPERTIES_BASE64 | ANDROID_SECRET_PROPERTIES_BASE64 ;
+            secret/release ANDROID_GOOGLE_PLAY_JSON_BASE64 | ANDROID_GOOGLE_PLAY_JSON_BASE64 ;
+            secret/release ANDROID_KEYSTORE_BASE64 | ANDROID_KEYSTORE_BASE64 ;
+
+      - name: Put selected secrets into files
         run: |
-          echo "${{ secrets.ANDROID_SECRET_PROPERTIES_BASE64 }}" | base64 -d > secrets.properties
-          echo "${{ secrets.ANDROID_GOOGLE_PLAY_JSON_BASE64 }}" | base64 -d > google-key.json
-          echo "${{ secrets.ANDROID_KEYSTORE_BASE64 }}" | base64 -d > release.keystore
+          echo "${{ steps.load-secrets.outputs.ANDROID_SECRET_PROPERTIES_BASE64 }}" | base64 -d > secrets.properties
+          echo "${{ steps.load-secrets.outputs.ANDROID_GOOGLE_PLAY_JSON_BASE64 }}" | base64 -d > google-key.json
+          echo "${{ steps.load-secrets.outputs.ANDROID_KEYSTORE_BASE64 }}" | base64 -d > release.keystore
         working-directory: android
 
       - name: Install fastlane
@@ -56,4 +68,4 @@ jobs:
         env:
           BUILD_NUMBER: ${{ github.run_number }}
           # BUILD_NAME is implicitly available
-          GOOGLE_MAPS_API_KEY: ${{ secrets.GOOGLE_MAPS_API_KEY }}
+          GOOGLE_MAPS_API_KEY: ${{ steps.load-secrets.outputs.GOOGLE_MAPS_API_KEY }}

frontend/.github/workflows/build_app_ios.yaml

@@ -30,12 +30,17 @@ jobs:
           # remove the 'v' prefix from the tag name
           echo "BUILD_NAME=${REF_NAME//v}" >> $GITHUB_ENV
 
-      - name: Load secrets from github
-        run: |
-          echo "${{ secrets.IOS_SECRET_PROPERTIES_BASE64 }}" | base64 -d > secrets.properties
-          echo "${{ secrets.IOS_GOOGLE_PLAY_JSON_BASE64 }}" | base64 -d > google-key.json
-          echo "${{ secrets.IOS_KEYSTORE_BASE64 }}" | base64 -d > release.keystore
-        working-directory: ios
+      - name: Load secrets
+        id: load-secrets
+        uses: hashicorp/vault-action@v3
+        with:
+          url: https://api.hashicorp.com
+          token: ${{ secrets.VAULT_TOKEN }}
+          secrets: |
+            secret/release GOOGLE_MAPS_API_KEY | GOOGLE_MAPS_API_KEY ;
+            secret/release IOS_ASC_KEY_ID | IOS_ASC_KEY_ID ;
+            secret/release IOS_ASC_ISSUER_ID | IOS_ASC_ISSUER_ID ;
+            secret/release IOS_ASC_KEY_P8 | IOS_ASC_KEY_P8 ;
 
       - name: Install fastlane
         run: bundle install
@@ -47,7 +52,7 @@ jobs:
         env:
           BUILD_NUMBER: ${{ github.run_number }}
           # BUILD_NAME is implicitly available
-          GOOGLE_MAPS_API_KEY: ${{ secrets.GOOGLE_MAPS_API_KEY }}
-          IOS_ASC_KEY_ID: ${{ secrets.IOS_ASC_KEY_ID }}
-          IOS_ASC_ISSUER_ID: ${{ secrets.IOS_ASC_ISSUER_ID }}
-          IOS_ASC_KEY_P8: ${{ secrets.IOS_ASC_KEY_P8 }}
+          GOOGLE_MAPS_API_KEY: ${{ steps.load-secrets.outputs.GOOGLE_MAPS_API_KEY }}
+          IOS_ASC_KEY_ID: ${{ GOOGLE_MAPS_API_KEY.IOS_ASC_KEY_ID }}
+          IOS_ASC_ISSUER_ID: ${{ GOOGLE_MAPS_API_KEY.IOS_ASC_ISSUER_ID }}
+          IOS_ASC_KEY_P8: ${{ GOOGLE_MAPS_API_KEY.IOS_ASC_KEY_P8 }}

frontend/README.md

@@ -46,12 +46,17 @@ bundle exec fastlane <lane>
 ```
 This is reused in the CI/CD pipeline to automate the deployment process.
 
-Fastlane assumes mutliple secrets to be present as files in the platform directories. These are:
-- for android:
-    - `secrets.properties` used by gradle to load secrets needed at execution time
-    - `release.keystore` used by gradle to sign the apk
-    - `google-key.json` used by fastlane to authenticate with the Google Play Store
-- for ios:
-    - TODO
+Secrets used by fastlane are stored on hashicorp vault and are fetched by the CI/CD pipeline. See below.
 
-These files are stored as secrets in the GitHub repository so that the CI pipeline can access them.
+## Secrets
+These are mostly used by the CI/CD pipeline to deploy the application. The main usage for github actions is documented under [https://github.com/hashicorp/vault-action](https://github.com/hashicorp/vault-action).
+**Global secrets** are used for both versions of the app (android and ios). 
+- `GOOGLE_MAPS_API_KEY` is used to authenticate with the Google Maps API
+
+**Platform-specific secrets** are used by the CI/CD pipeline to deploy to the respective app stores.
+- `ANDROID_KEYSTORE` is used to sign the android apk
+- `ANDROID_GOOGLE_KEY` is used to authenticate with the Google Play Store api
+- `IOS_GOOGLE_...`
+- `IOS_GOOGLE_...`
+- `IOS_GOOGLE_...`
+- `IOS_GOOGLE_...`

frontend/android/README.md

@@ -63,11 +63,3 @@ Compared to the flutter template application, a few changes have to be made:
         }
     ```
 
-
-### Using the credentials in CI
-- Add the secret files to the repository secrets (e.g. `ANDROID_SECRETS_PROPERTIES`).
-
-- temporarily write them back to files during the CI execution:
-    ```bash
-    echo {{ secrets.ANDROID_SECRETS }} >> android/secrets.properties
-    ```

frontend/ios/fastlane/Fastfile

@@ -1,10 +1,7 @@
 default_platform(:ios)
 
 platform :ios do
-  before_all do
-    load_asc_api_token
-  end
-  
+
   desc "Load the App Store Connect API token"
   lane :load_asc_api_token do
     app_store_connect_api_key(
@@ -16,17 +13,66 @@ platform :ios do
     )
   end
 
+  desc "Installs signing certificate in the keychain and downloads provisioning profiles from App Store Connect"
+  lane :prepare_signing do |options|
+    team_id = CredentialsManager::AppfileConfig.try_fetch_value(:team_id)
+    api_key = lane_context[SharedValues::APP_STORE_CONNECT_API_KEY]
+
+    keychain_name = "signing"
+    keychain_password = "temp"
+
+    delete_keychain(
+      name: keychain_name
+    ) if File.exist? File.expand_path("~/Library/Keychains/#{keychain_name}-db")
+
+    create_keychain(
+      name: keychain_name,
+      password: keychain_password,
+      default_keychain: true,
+      unlock: true,
+      timeout: 3600
+    )
+
+    import_certificate(
+      certificate_path: ENV["SIGNING_KEY_FILE_PATH"],
+      certificate_password: ENV["SIGNING_KEY_PASSWORD"],
+      keychain_name: keychain_name,
+      keychain_password: keychain_password
+    )
+
+    # fetches and installs provisioning profiles from ASC
+    sigh(
+      adhoc: options[:adhoc],
+      api_key: api_key,
+      readonly: true
+    )
+  end
+
+
   desc "Deploy a new version to closed testing (testflight)"
   lane :deploy_testing do
     build_name = ENV["BUILD_NAME"]
     build_number = ENV["BUILD_NUMBER"]
 
-    api_key = lane_context[SharedValues::APP_STORE_CONNECT_API_KEY]
-    sync_code_signing(
-      api_key: api_key,
-      type: "appstore",
-      readonly: true,
+    app_identifier = CredentialsManager::AppfileConfig.try_fetch_value(:app_identifier)
+    
+    load_asc_api_token
+    prepare_signing
+
+    profile_name = "App Provisioning Profile" # replace with the name of the profile to use for the build
+    output_name = "example-iOS" # specify the name of the .ipa file to generate
+    export_method = "app-store" # specify the export method
+    
+    # turn off automatic signing during build so correct code signing identity is guaranteed to be used
+    update_code_signing_settings(
+      use_automatic_signing: false,
+      targets: ["main-target"], # specify which targets to update code signing settings for
+      code_sign_identity: "Apple Distribution", # replace with name of code signing identity if different
+      bundle_identifier: app_identifier,
+      profile_name: profile_name,
+      build_configurations: ["Release"] # only toggle code signing settings for Release configurations
     )
+    
 
     sh(
       "flutter",
@@ -40,7 +86,11 @@ platform :ios do
     # sign the app (whithout rebuilding it)
     build_app(
       skip_build_archive: true,
-      archive_path: "../build/ios/archive/Runner.xarchive"
+      archive_path: "../build/ios/archive/Runner.xcarchive"
+      provisioningProfiles: {
+        app_identifier => profile_name
+      }
+
     )
 
     upload_to_testflight

frontend/ios/local.env.sample

@@ -0,0 +1,10 @@
+# SAMPLE env file that replicates the env in the CI/CD pipeline
+# DO NOT EDIT THIS FILE
+# Copy this file to local.env and edit the values to match your local environment
+IOS_ASC_KEY_ID="sample"
+IOS_ASC_ISSUER_ID="sample"
+IOS_ASC_KEY_P8="sample"
+SIGNING_KEY_FILE_PATH="sample"
+SIGNING_KEY_PASSWORD="sample"
+BUILD_NAME="sample"
+BUILD_NUMBER="sample"