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docs/src/content/docs/tutorials/02-sparkle-updates.mdx
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docs/src/content/docs/tutorials/02-sparkle-updates.mdx
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---
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title: Integrating Sparkle for Self-Updates
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description: A tutorial on integrating Sparkle for automatic updates in macOS and Windows applications
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---
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import { Tabs, TabItem, FileTree } from '@astrojs/starlight/components';
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import {Image } from 'astro:assets';
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import gatekeeper from "../../../assets/sparkle/gatekeeper.png";
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import openprompt from "../../../assets/sparkle/openprompt.png";
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import prefs from "../../../assets/sparkle/prefs.png";
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import touchid from "../../../assets/sparkle/touchid.png";
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import winsparkle from "../../../assets/sparkle/winsparkle-screenshot.png";
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import updater3 from "../../../assets/sparkle/updater3.mp4";
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[Sparkle](https://sparkle-project.org/) provides all the functionality needed for updating applications. It handles:
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- Checking for updates (automatically or manually)
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- Downloading updates
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- Verifying update integrity with cryptographic signatures
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- Installing updates with user consent
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:::note
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For this tutorial, an [Apple developer certificate](https://developer.apple.com/help/account/create-certificates/create-developer-id-certificates) is required.
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:::
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## Tutorial: Integrating Sparkle with Wails
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This tutorial will walk you through the complete process of adding self-update capabilities to your Wails application using Sparkle. We'll cover:
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1. Installing the Sparkle framework
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2. Integrating with go-sparkle
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3. Setting up a local development server for testing updates
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4. Creating and signing update packages
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5. Configuring the appcast.xml file
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By the end of the tutorial, you'll know how to integrate Sparkle into your Wails application. Here is a demo:
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<video src={updater3} controls></video>
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### Step 1: Installing the Sparkle Framework
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First, we need to download and integrate the Sparkle framework into our application bundle.
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#### Download Sparkle Framework
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1. Download the latest Sparkle package [from GitHub](https://github.com/sparkle-project/Sparkle/releases)
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2. Extract the downloaded archive
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3. For this tutorial, we're using [Sparkle 2.6.4](https://github.com/sparkle-project/Sparkle/releases/tag/2.6.4)
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The extracted Sparkle package contains several important directories and files:
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<FileTree>
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- CHANGELOG
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- INSTALL
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- LICENSE
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- SampleAppcast.xml
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- Sparkle Test App.app
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- Sparkle.framework/
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- Autoupdate -> Versions/Current/Autoupdate
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- Headers -> Versions/Current/Headers
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- Modules -> Versions/Current/Modules
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- PrivateHeaders -> Versions/Current/PrivateHeaders
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- Resources -> Versions/Current/Resources
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- Sparkle -> Versions/Current/Sparkle
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- Updater.app -> Versions/Current/Updater.app
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- Versions/
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- XPCServices -> Versions/Current/XPCServices
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- Symbols/
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- Various .dSYM files
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- bin/
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- BinaryDelta
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- generate_appcast
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- generate_keys
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- old_dsa_scripts
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- sign_update
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- sparkle.app
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</FileTree>
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#### Add Sparkle Framework to Your App
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1. Create a `Frameworks` directory in your `build/darwin` folder:
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```shell
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mkdir -p build/darwin/Frameworks
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```
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2. Copy the Sparkle framework to your `build/darwin` folder:
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```shell
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cp -R /path/to/Sparkle-2.6.4/Sparkle.framework build/darwin/Frameworks
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```
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:::note
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The `Frameworks` directory is the standard location for frameworks within macOS applications. When examining existing applications (via right-click > Show Package Contents), you'll find frameworks in paths like `/Applications/AppName.app/Contents/Frameworks/`.
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:::
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#### Update Build Configuration
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Modify your `build/darwin/Taskfile.yml` to copy the Sparkle framework into your app bundle:
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```diff
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create:app:bundle:
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summary: Creates an `.app` bundle
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cmds:
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- mkdir -p {{.BIN_DIR}}/{{.APP_NAME}}.app/Contents/{MacOS,Resources,Frameworks}
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- cp build/icons.icns {{.BIN_DIR}}/{{.APP_NAME}}.app/Contents/Resources
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- cp {{.BIN_DIR}}/{{.APP_NAME}} {{.BIN_DIR}}/{{.APP_NAME}}.app/Contents/MacOS
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- cp build/darwin/Info.plist {{.BIN_DIR}}/{{.APP_NAME}}.app/Contents
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+ - cp -R build/darwin/Frameworks/Sparkle.framework {{.BIN_DIR}}/{{.APP_NAME}}.app/Contents/Frameworks
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```
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#### Set up CGO_LDFLAGS
|
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|
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Under the `env` block of the `build` task in `build/darwin/Taskfile.yml`, add:
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|
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```diff
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env:
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CGO_ENABLED: 1
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CGO_CFLAGS: -mmacosx-version-min=10.13
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- CGO_LDFLAGS: -mmacosx-version-min=10.13
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+ CGO_LDFLAGS: -mmacosx-version-min=10.13 -rpath @loader_path/../Frameworks
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```
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This path is relative to where our binary will be inside the app bundle:
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|
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<FileTree>
|
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- YourApp.app/
|
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- Contents/
|
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- MacOS/
|
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- YourApp
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- Frameworks/
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- Sparkle.framework/
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</FileTree>
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|
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#### Update Info.plist
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Add the following keys to your `build/darwin/Info.plist` file:
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|
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```xml
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<key>SUFeedURL</key>
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<string>https://localhost/appcast.xml</string>
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<key>SUEnableAutomaticChecks</key>
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<false/>
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```
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|
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We'll generate and add the public key in a later step.
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|
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#### Test Build
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|
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Now, we will test that building the app bundle works. To do this, run:
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|
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```shell
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wails3 package
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```
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|
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If the build was successful, the app bundle should contain the Sparkle framework:
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|
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<FileTree>
|
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- YourApp.app/
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- Contents/
|
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- MacOS/
|
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- YourApp
|
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- Frameworks/
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- Sparkle.framework/
|
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</FileTree>
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|
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You can check this by right clicking on the app bundle and selecting "Show Package Contents".
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### Step 2: Integrating with go-sparkle
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Now that we have the Sparkle framework installed, let's integrate it with our Go code using the [go-sparkle](https://github.com/abemedia/go-sparkle) package.
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#### Install go-sparkle
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Add the go-sparkle package to your project:
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|
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```shell
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go get github.com/abemedia/go-sparkle
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```
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#### Basic Integration
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In your `main.go` file, import `go-sparkle` with a leading underscore:
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|
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```go
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import (
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_ "github.com/abemedia/go-sparkle"
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)
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```
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#### Rebuild your Application
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To rebuild your application, run:
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```shell
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wails3 package
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```
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If all is successful, you should be able to run your application and get a popup dialog asking if you want to enable automatic updates.
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TBD: PICTURE
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### Step 3: Setting up a Local Development Server
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To test the update mechanism, we need a server to host our update files. We'll use [Caddy](https://caddyserver.com/) for this purpose as it provides excellent HTTPS support.
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#### Install Caddy
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Install Caddy using Homebrew:
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|
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```shell
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brew install caddy
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```
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#### Create Updates Directory
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|
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Create an `updates` directory to host your update files:
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|
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```shell
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mkdir -p build/darwin/updates
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```
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|
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#### Create a Caddyfile
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|
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Create a file named `Caddyfile` in your project directory with:
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|
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```
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localhost {
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root * ./build/darwin/updates
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file_server
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}
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```
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|
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#### Create a test html file
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|
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Create an html file to test the server:
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|
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```shell
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echo "Hello World" > build/darwin/updates/index.html
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```
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|
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#### Start the Server
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||||
|
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Start Caddy with:
|
||||
|
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```shell
|
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caddy run
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```
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|
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If you now browse to `https://localhost`, you should see the test HTML file.
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|
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### Step 4: Creating and Signing Updates
|
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|
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Sparkle uses cryptographic signatures to verify update integrity. Let's set up the necessary keys and learn how to sign updates.
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|
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#### Generate Sparkle Keys
|
||||
|
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Use the `generate_keys` tool from the Sparkle package:
|
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|
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```shell
|
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/path/to/Sparkle-2.6.4/bin/generate_keys
|
||||
```
|
||||
|
||||
When running this tool for the first time, you may encounter macOS Gatekeeper security prompts:
|
||||
|
||||
<Image src={gatekeeper} alt="Gatekeeper blocking dialog"/>
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|
||||
To proceed, open System Settings > Privacy & Security and scroll to the bottom:
|
||||
|
||||
:::note
|
||||
The naming above is as of macOS Sequoia 15.3. Previous versions of macOS may differ.
|
||||
:::
|
||||
|
||||
<Image src={prefs} alt="Privacy & Security settings"/>
|
||||
|
||||
Click "Allow Anyway" and then run the tool again. You'll see another prompt:
|
||||
|
||||
<Image src={openprompt} alt="Open prompt"/>
|
||||
|
||||
Click "Open Anyway" and authenticate:
|
||||
|
||||
<Image src={touchid} alt="Touch ID authentication"/>
|
||||
|
||||
After authentication, the tool will generate a key pair and output your public key:
|
||||
|
||||
```
|
||||
$ ./bin/generate_keys
|
||||
Generating a new signing key. This may take a moment, depending on your machine.
|
||||
A key has been generated and saved in your keychain. Add the `SUPublicEDKey` key to
|
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the Info.plist of each app for which you intend to use Sparkle for distributing
|
||||
updates. It should appear like this:
|
||||
|
||||
<key>SUPublicEDKey</key>
|
||||
<string>wiI5O/SGcbX9VdcIN+hBXvV66KI3gpTTlHMelslKsg0=</string>
|
||||
```
|
||||
|
||||
This will generate two keys:
|
||||
- A private key (kept secure in your keychain)
|
||||
- A public key (add this to your Info.plist)
|
||||
|
||||
Update your `build/darwin/Info.plist` with the generated public key:
|
||||
|
||||
```xml
|
||||
<key>SUPublicEDKey</key>
|
||||
<string>GENERATED_PUBLIC_KEY</string>
|
||||
```
|
||||
|
||||
#### Create a Test Update
|
||||
|
||||
1. Firstly, rename your existing application to `oldversion.app`.
|
||||
2. Make a change to your existing application. For our demo app, we'll update the version number text to 1.0.0.
|
||||
3. Build the updated application using `wails3 package`
|
||||
4. Code sign the updated application:
|
||||
|
||||
Check if you have a valid developer identity by running `security find-identity -v -p codesigning` which should show any valid identities in the format of Developer ID Application: Human Person (TEAMIDHERE)".
|
||||
|
||||
|
||||
|
||||
```shell
|
||||
CODE_SIGN_IDENTITY="Developer ID Application: Human Person (TEAMIDHERE)"
|
||||
|
||||
codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime bin/updater3.app/Contents/Frameworks/Sparkle.framework/Versions/B/XPCServices/Installer.xpc
|
||||
|
||||
# For Sparkle versions >= 2.6
|
||||
codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime --preserve-metadata=entitlements bin/updater3.app/Contents/Frameworks/Sparkle.framework/Versions/B/XPCServices/Downloader.xpc
|
||||
|
||||
# For Sparkle versions < 2.6
|
||||
#codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime --entitlements Entitlements/Downloader.entitlements bin/updater3.app/Contents/Frameworks/Sparkle.framework/Versions/B/XPCServices/Downloader.xpc
|
||||
|
||||
codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime bin/updater3.app/Contents/Frameworks/Sparkle.framework/Versions/B/Autoupdate
|
||||
codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime bin/updater3.app/Contents/Frameworks/Sparkle.framework/Versions/B/Updater.app
|
||||
codesign -f -s "$CODE_SIGN_IDENTITY" -o runtime bin/updater3.app/Contents/Frameworks/Sparkle.framework
|
||||
```
|
||||
5. Create a ZIP archive of the updated application:
|
||||
|
||||
```shell
|
||||
ditto -c -k --keepParent "bin/YourApp.app" "build/darwin/updates/YourApp_1.0.0.zip"
|
||||
```
|
||||
|
||||
#### Sign the Update
|
||||
|
||||
Sign the update using the `sign_update` tool:
|
||||
|
||||
```shell
|
||||
/path/to/Sparkle-2.6.4/bin/sign_update updates/YourApp_1.0.0.zip /path/to/your/private/key
|
||||
```
|
||||
|
||||
This will output a signature that you'll need for your appcast.xml file.
|
||||
|
||||
### Step 5: Creating the Appcast.xml File
|
||||
|
||||
The appcast.xml file is an RSS feed that tells Sparkle where to find updates and what versions are available.
|
||||
|
||||
Create an `appcast.xml` file in your `updates` directory:
|
||||
|
||||
```xml
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle" xmlns:dc="http://purl.org/dc/elements/1.1/">
|
||||
<channel>
|
||||
<title>YourApp Changelog</title>
|
||||
<link>http://localhost:8000/appcast.xml</link>
|
||||
<description>Most recent changes with links to updates.</description>
|
||||
<language>en</language>
|
||||
<item>
|
||||
<title>Version 1.0.0</title>
|
||||
<sparkle:version>1.0.0</sparkle:version>
|
||||
<description>
|
||||
<![CDATA[
|
||||
<h2>New Features</h2>
|
||||
<ul>
|
||||
<li>Feature 1</li>
|
||||
<li>Feature 2</li>
|
||||
</ul>
|
||||
<h2>Bug Fixes</h2>
|
||||
<ul>
|
||||
<li>Fix 1</li>
|
||||
<li>Fix 2</li>
|
||||
</ul>
|
||||
]]>
|
||||
</description>
|
||||
<pubDate>Wed, 01 Mar 2023 12:00:00 +0000</pubDate>
|
||||
<enclosure
|
||||
url="http://localhost:8000/YourApp_1.0.0.zip"
|
||||
sparkle:version="1.0.0"
|
||||
length="12345678"
|
||||
type="application/octet-stream"
|
||||
sparkle:edSignature="YOUR_SIGNATURE_FROM_SIGN_UPDATE"
|
||||
/>
|
||||
</item>
|
||||
</channel>
|
||||
</rss>
|
||||
```
|
||||
|
||||
Replace `YOUR_SIGNATURE_FROM_SIGN_UPDATE` with the signature generated in the previous step.
|
||||
|
||||
#### Automating Appcast Generation
|
||||
|
||||
For convenience, you can use the `generate_appcast` tool to automatically generate the appcast.xml file:
|
||||
|
||||
```shell
|
||||
/path/to/Sparkle-2.6.4/bin/generate_appcast \
|
||||
--download-url-prefix "http://localhost:8000" \
|
||||
--private-key-path /path/to/your/private/key \
|
||||
updates/
|
||||
```
|
||||
|
||||
This will scan the updates directory and generate an appcast.xml file with the correct signatures.
|
||||
|
||||
### Step 6: Testing the Update Process
|
||||
|
||||
Now that everything is set up, let's test the update process:
|
||||
|
||||
1. Build and run your application with version 0.9.0
|
||||
2. The app should check for updates and find version 1.0.0
|
||||
3. Sparkle will prompt the user to update
|
||||
4. After confirmation, Sparkle will download and install the update
|
||||
|
||||
## Additional Configuration
|
||||
|
||||
### Customising Update Checks
|
||||
|
||||
You can customise how Sparkle checks for updates by adding additional keys to your Info.plist:
|
||||
|
||||
```xml
|
||||
<!-- Check for updates every 24 hours (86400 seconds) -->
|
||||
<key>SUScheduledCheckInterval</key>
|
||||
<integer>86400</integer>
|
||||
|
||||
<!-- Skip minor updates -->
|
||||
<key>SUSkipMinorUpdates</key>
|
||||
<true/>
|
||||
```
|
||||
|
||||
### Adding Manual Update Checks
|
||||
|
||||
To provide a manual update check option, add a function like this to your application service:
|
||||
|
||||
```go
|
||||
func (a *App) CheckForUpdates() {
|
||||
sparkle.CheckForUpdates()
|
||||
}
|
||||
```
|
||||
|
||||
Then, expose this function to your frontend:
|
||||
|
||||
```go
|
||||
//go:embed all:frontend/dist
|
||||
var assets embed.FS
|
||||
|
||||
func main() {
|
||||
// Create application with options
|
||||
app := wails.NewApplication(wails.Options{
|
||||
Assets: assets,
|
||||
Bind: []interface{}{
|
||||
&App{},
|
||||
},
|
||||
})
|
||||
|
||||
// Run the application
|
||||
err := app.Run()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
For a native macOS experience, add a menu item under `<App Name> -> Check for Updates` that calls this function.
|
||||
|
||||
### Windows Support with WinSparkle
|
||||
|
||||
For Windows applications, you can use WinSparkle, which provides similar functionality with an almost identical API. The go-sparkle package supports both Sparkle and WinSparkle, making it easy to support both platforms with minimal code changes.
|
||||
|
||||
<Image src={winsparkle} alt="WinSparkle"/>
|
||||
|
||||
## Conclusion
|
||||
|
||||
You've now successfully integrated Sparkle into your Wails application, providing a robust self-update mechanism for your users. This approach gives you complete control over the update process whilst providing a native experience for your users.
|
||||
|
||||
For production use, you'll want to:
|
||||
|
||||
1. Host your updates on a secure server with HTTPS
|
||||
2. Keep your private key secure
|
||||
3. Consider using a CI/CD pipeline to automate the build, signing, and appcast generation process
|
||||
|
||||
## References
|
||||
|
||||
:::note
|
||||
This tutorial is based on [Marcus Crane's](https://github.com/marcus-crane) [Wails Sparkle guide](https://github.com/marcus-crane/wails3-sparkle-poc)
|
||||
:::
|
||||
|
||||
- [Sparkle Documentation](https://sparkle-project.org/documentation/)
|
||||
- [go-sparkle Repository](https://github.com/abemedia/go-sparkle)
|
||||
- [WinSparkle Documentation](https://github.com/vslavik/winsparkle/wiki)
|
||||
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Reference in New Issue
Block a user