Merge pull request #1 from cea-hpc/feature_user_from_key

managerd: adding a way to retrieve user from stored key

sshproxy-managerd/sshproxy-managerd.go

@@ -19,6 +19,7 @@ import (
 	"net"
 	"os"
 	"os/signal"
+	"regexp"
 	"strings"
 	"syscall"
 	"time"
@@ -222,6 +223,15 @@ func genKey(user, host string) string {
 	return fmt.Sprintf("%s@%s", user, host)
 }
 
+// getUserFromKey returns the user from the key used in the proxiedConnections global variable.
+func getUserFromKey(key string) (string, error) {
+	match := regexp.MustCompile(`^(\w*)@`).FindStringSubmatch(key)
+	if len(match) < 2 {
+		return "", fmt.Errorf("Unable to extract user from given key (%s)", key)
+	}
+	return match[1], nil
+}
+
 // getAlgorithmAndRoutes returns the selection algorithm and a slice with the
 // possible destinations from the global configuration for a user connected to
 // an hostport and belonging to groups.