Dbus service to support telemetry jwt operation

host_modules/user_auth_mgmt.py

@@ -0,0 +1,41 @@
+""" Host User Authentication management dbus endpoint handler"""
+import host_service
+import pwd, grp, syslog
+
+mod_name= 'user_auth_mgmt'
+
+class UserAuthMgmt(host_service.HostModule):
+    """DBus endpoint that handles Infra user authentication related operations """
+
+
+    def __init__(self,  name):
+        super().__init__(name)
+
+    @staticmethod
+    def get_user_roles(username):
+        """ Return the user role to the provided username"""
+        output = ","
+        roles = []
+        try:
+            pwd.getpwnam(username)
+        except:
+            syslog.syslog(syslog.LOG_ERR,"Invalid user")
+            return 1,"Invalid user"
+        gids = [g.gr_gid for g in grp.getgrall() if username in g.gr_mem]
+        gid = pwd.getpwnam(username).pw_gid
+        gids.append(grp.getgrgid(gid).gr_gid)
+        roles = [grp.getgrgid(gid).gr_name for gid in gids]
+        if len(roles) > 0:
+            output = output.join(roles)
+        else:
+            return 1,"No roles for the user"
+        return 0,output
+
+    @host_service.method(host_service.bus_name(mod_name), in_signature='s', out_signature='is')
+    def retrieve_user_roles(self, options):
+        return UserAuthMgmt.get_user_roles(options)
+
+
+def register():
+    """Return class name"""
+    return UserAuthMgmt, mod_name