Add signature generation

Signed-off-by: Lukas Bachschwell <lukas@lbsfilm.at>

.goreleaser.yml

@@ -22,6 +22,22 @@ changelog:
     exclude:
       - '^docs:'
       - '^test:'
+signs:
+  - id: selfupdatesign
+
+    # path to the signature command
+    #
+    # defaults to `gpg`
+    cmd: openssl
+
+    # command line templateable arguments for the command
+    #
+    # to sign with a specific key use
+    # args: ["-u", "<key id, fingerprint, email, ...>", "--output", "${signature}", "--detach-sign", "${artifact}"]
+    #
+    # defaults to `["--output", "${signature}", "--detach-sign", "${artifact}"]`
+    args: ["dgst", "-sha256", "-sign", "privkey.pem", "${artifact}.sig", "${artifact}"]
+    artifacts: all
 gitea_urls:
   api: https://git.lbsfilm.at/api/v1/
   download: https://git.lbsfilm.at

main.go

@@ -19,7 +19,7 @@ func main() {
 		fmt.Println("provide a command")
 		os.Exit(1)
 	} else if os.Args[1] == "upgrade" || os.Args[1] == "up" {
-		fmt.Print("Trying Upgrade... ")
+		fmt.Println("Trying Upgrade... ")
 		err := update(gitTag)
 		if err != nil {
 			fmt.Println(err)
@@ -35,7 +35,16 @@ func main() {
 }
 
 func update(version string) error {
-	latest, found, err := selfupdate.DetectLatest("lbsadmin/goselfupdatetest")
+	source, _ := selfupdate.NewGiteaSource(selfupdate.GiteaConfig{BaseURL: "https://git.lbsfilm.at/"})
+	updater, err := selfupdate.NewUpdater(selfupdate.Config{
+		Source:    source,
+		Validator: nil,
+		OS:        runtime.GOOS,
+		Arch:      runtime.GOARCH,
+		Arm:       0,
+	})
+
+	latest, found, err := updater.DetectLatest("lbsadmin/goselfupdatetest")
 	if err != nil {
 		return fmt.Errorf("error occurred while detecting version: %v", err)
 	}
@@ -52,7 +61,7 @@ func update(version string) error {
 	if err != nil {
 		return errors.New("could not locate executable path")
 	}
-	if err := selfupdate.UpdateTo(latest.AssetURL, latest.AssetName, exe); err != nil {
+	if err := updater.UpdateTo(latest, exe); err != nil {
 		return fmt.Errorf("error occurred while updating binary: %v", err)
 	}
 	log.Printf("Successfully updated to version %s", latest.Version())