Allow user to change the configuration file

Fix #251

gns3server/config.py

@@ -36,9 +36,10 @@ class Config(object):
     Configuration file management using configparser.
 
     :params files: Array of configuration files (optional)
+    :params config_directory: Path of the configuration directory. If None default OS directory
     """
 
-    def __init__(self, files=None):
+    def __init__(self, files=None, config_directory=None):
 
         self._files = files
 

gns3server/run.py

@@ -78,38 +78,22 @@ def locale_check():
         log.info("Current locale is {}.{}".format(language, encoding))
 
 
-def parse_arguments(argv, config):
+def parse_arguments(argv):
     """
     Parse command line arguments and override local configuration
 
     :params args: Array of command line arguments
-    :params config: ConfigParser with default variable from configuration
     """
 
-    defaults = {
-        "host": config.get("host", "0.0.0.0"),
-        "port": config.get("port", 8000),
-        "ssl": config.getboolean("ssl", False),
-        "certfile": config.get("certfile", ""),
-        "certkey": config.get("certkey", ""),
-        "record": config.get("record", ""),
-        "local": config.getboolean("local", False),
-        "allow": config.getboolean("allow_remote_console", False),
-        "quiet": config.getboolean("quiet", False),
-        "debug": config.getboolean("debug", False),
-        "live": config.getboolean("live", False),
-        "logfile": config.getboolean("logfile", ""),
-    }
-
     parser = argparse.ArgumentParser(description="GNS3 server version {}".format(__version__))
-    parser.set_defaults(**defaults)
     parser.add_argument("-v", "--version", help="show the version", action="version", version=__version__)
     parser.add_argument("--host", help="run on the given host/IP address")
     parser.add_argument("--port", help="run on the given port", type=int)
     parser.add_argument("--ssl", action="store_true", help="run in SSL mode")
+    parser.add_argument("--config", help="Configuration file")
     parser.add_argument("--certfile", help="SSL cert file")
     parser.add_argument("--certkey", help="SSL key file")
-    parser.add_argument("--record", help="save curl requests into a file")
+    parser.add_argument("--record", help="save curl requests into a file (for developers)")
     parser.add_argument("-L", "--local", action="store_true", help="local mode (allows some insecure operations)")
     parser.add_argument("-A", "--allow", action="store_true", help="allow remote connections to local console ports")
     parser.add_argument("-q", "--quiet", action="store_true", help="do not show logs on stdout")
@@ -120,6 +104,27 @@ def parse_arguments(argv, config):
     parser.add_argument("--daemon", action="store_true", help="start as a daemon")
     parser.add_argument("--pid", help="store process pid")
 
+    args = parser.parse_args(argv)
+    if args.config:
+        Config.instance(files=[args.config])
+
+    config = Config.instance().get_section_config("Server")
+    defaults = {
+        "host": config.get("host", "0.0.0.0"),
+        "port": config.get("port", 8000),
+        "ssl": config.getboolean("ssl", False),
+        "certfile": config.get("certfile", ""),
+        "certkey": config.get("certkey", ""),
+        "record": config.get("record", ""),
+        "local": config.getboolean("local", False),
+        "allow": config.getboolean("allow_remote_console", False),
+        "quiet": config.getboolean("quiet", False),
+        "debug": config.getboolean("debug", False),
+        "live": config.getboolean("live", False),
+        "logfile": config.getboolean("logfile", ""),
+    }
+
+    parser.set_defaults(**defaults)
     return parser.parse_args(argv)
 
 
@@ -173,7 +178,7 @@ def pid_lock(path):
 
 
 def run():
-    args = parse_arguments(sys.argv[1:], Config.instance().get_section_config("Server"))
+    args = parse_arguments(sys.argv[1:])
 
     if args.daemon and sys.platform.startswith("win"):
         log.critical("Daemon is not supported on Windows")