feat: respect BROWSER env var

fixes #130

Signed-off-by: Tim Heurich <[email protected]>

README.md

@@ -20,6 +20,7 @@ Make working with AWS SSO on local machines an ease.
 * Choose your desired account and role interactively
 * Choose your account and role via flags from command line
 * Utilize AWSs `credential_process` to avoid storing credentials locally
+  * Locks concurrent calls to `credential_process` to no DDoS your Browser (this behaviour occurs from time to time when using e.g. the k8s plugin for IntelliJ)   
 * Refresh credentials based on your previously chosen account and role (if you've chosen to persist your credentials)
 * Store your Start-URL and region
 * Set different profiles for your different accounts
@@ -108,6 +109,8 @@ OPTIONS:
 
 ### Configuration
 
+* If you want to point to a specific non-default Browser, do so via the `BROWSER` environment variable
+
 <details><summary>Basics</summary>
 
 ```

pkg/sso/aws.go

@@ -175,8 +175,17 @@ func startDeviceAuthorization(oidc ssooidciface.SSOOIDCAPI, rco *ssooidc.Registe
 
 func openUrlInBrowser(url string) {
 	var err error
-	osName := determineOsName()
 
+	if env, ok := os.LookupEnv("BROWSER"); ok {
+		zap.S().Debugf("using BROWSER environment variable: %s", env)
+		err = exec.Command(env, url).Start()
+		if err != nil {
+			zap.S().Fatalf("error while opening browser: %s", err)
+		}
+		return
+	}
+
+	osName := determineOsName()
 	switch osName {
 	case "linux":
 		err = exec.Command("xdg-open", url).Start()
@@ -187,7 +196,7 @@ func openUrlInBrowser(url string) {
 	case "wsl":
 		err = exec.Command("wslview", url).Start()
 	default:
-		err = fmt.Errorf("could not open %s - unsupported platform. Please open the URL manually", url)
+		err = fmt.Errorf("could not open %s - unsupported platform. Please open the URL manually or use the BROWSER environemnt variable to point to your browser", url)
 	}
 	if err != nil {
 		zap.S().Error(err)