Support setting admin password and temp stream key via cli flag

config/config.go

@@ -40,6 +40,9 @@ var BuildPlatform = "dev"
 // EnableAutoUpdate will explicitly enable in-place auto-updates via the admin.
 var EnableAutoUpdate = false
 
+// A temporary stream key that can be set via the command line.
+var TemporaryStreamKey = ""
+
 // GetCommit will return an identifier used for identifying the point in time this build took place.
 func GetCommit() string {
 	if GitCommit == "" {

core/rtmp/rtmp.go

@@ -11,6 +11,7 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	"github.com/nareix/joy5/format/rtmp"
+	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/core/data"
 	"github.com/owncast/owncast/models"
 )
@@ -87,6 +88,11 @@ func HandleConn(c *rtmp.Conn, nc net.Conn) {
 		}
 	}
 
+	// Test against the temporary key if it was set at runtime.
+	if config.TemporaryStreamKey != "" && secretMatch(config.TemporaryStreamKey, c.URL.Path) {
+		accessGranted = true
+	}
+
 	if !accessGranted {
 		log.Errorln("invalid streaming key; rejecting incoming stream")
 		_ = nc.Close()

main.go

@@ -23,7 +23,8 @@ var (
 	enableDebugOptions    = flag.Bool("enableDebugFeatures", false, "Enable additional debugging options.")
 	enableVerboseLogging  = flag.Bool("enableVerboseLogging", false, "Enable additional logging.")
 	restoreDatabaseFile   = flag.String("restoreDatabase", "", "Restore an Owncast database backup")
-	newStreamKey          = flag.String("streamkey", "", "Set your stream key/admin password")
+	newAdminPassword      = flag.String("adminpassword", "", "Set your admin password")
+	newStreamKey          = flag.String("streamkey", "", "Set a temporary stream key for this session")
 	webServerPortOverride = flag.String("webserverport", "", "Force the web server to listen on a specific port")
 	webServerIPOverride   = flag.String("webserverip", "", "Force web server to listen on this IP address")
 	rtmpPortOverride      = flag.Int("rtmpport", 0, "Set listen port for the RTMP server")
@@ -101,15 +102,20 @@ func main() {
 }
 
 func handleCommandLineFlags() {
-	if *newStreamKey != "" {
-		if err := data.SetAdminPassword(*newStreamKey); err != nil {
-			log.Errorln("Error setting your stream key.", err)
+	if *newAdminPassword != "" {
+		if err := data.SetAdminPassword(*newAdminPassword); err != nil {
+			log.Errorln("Error setting your admin password.", err)
 			log.Exit(1)
 		} else {
-			log.Infoln("Stream key changed")
+			log.Infoln("Admin password changed")
 		}
 	}
 
+	if *newStreamKey != "" {
+		log.Println("Temporary stream key is set for this session.")
+		config.TemporaryStreamKey = *newStreamKey
+	}
+
 	// Set the web server port
 	if *webServerPortOverride != "" {
 		portNumber, err := strconv.Atoi(*webServerPortOverride)