Find an alternative IOS or IOU image if one cannot be found when importing a topology.

gns3server/modules/base.py

@@ -19,6 +19,7 @@
 Base class (interface) for modules
 """
 
+import os
 import sys
 import traceback
 import gns3server.jsonrpc as jsonrpc
@@ -26,6 +27,7 @@ import multiprocessing
 import zmq
 import signal
 
+from gns3server.config import Config
 from jsonschema import validate, ValidationError
 
 import logging
@@ -45,6 +47,9 @@ class IModule(multiprocessing.Process):
 
     def __init__(self, name, *args, **kwargs):
 
+        config = Config.instance()
+        server_config = config.get_default_section()
+        self._images_dir = os.path.expandvars(os.path.expanduser(server_config.get("upload_directory", "~/GNS3/images")))
         multiprocessing.Process.__init__(self, name=name)
         self._context = None
         self._ioloop = None
@@ -328,3 +333,8 @@ class IModule(multiprocessing.Process):
             cls.modules[module][destination] = method
             return method
         return wrapper
+
+    @property
+    def images_directory(self):
+
+        return self._images_dir

gns3server/modules/dynamips/backends/vm.py

@@ -138,6 +138,10 @@ class VM(object):
         chassis = request.get("chassis")
         router_id = request.get("router_id")
 
+        updated_image_path = os.path.join(self.images_directory, image)
+        if os.path.isfile(updated_image_path):
+            image = updated_image_path
+
         try:
 
             if platform not in PLATFORMS:

gns3server/modules/iou/__init__.py

@@ -295,6 +295,10 @@ class IOU(IModule):
         console = request.get("console")
         iou_id = request.get("iou_id")
 
+        updated_iou_path = os.path.join(self.images_directory, iou_path)
+        if os.path.isfile(updated_iou_path):
+            iou_path = updated_iou_path
+
         try:
             iou_instance = IOUDevice(name,
                                      iou_path,