Fix error when snapshot exists with an underscore in the name

gns3server/controller/project.py

@@ -192,7 +192,11 @@ class Project:
         if os.path.exists(snapshot_dir):
             for snap in os.listdir(snapshot_dir):
                 if snap.endswith(".gns3project"):
-                    snapshot = Snapshot(self, filename=snap)
+                    try:
+                        snapshot = Snapshot(self, filename=snap)
+                    except ValueError:
+                        log.error("Invalid snapshot file: {}".format(snap))
+                        continue
                     self._snapshots[snapshot.id] = snapshot
 
         # Create the project on demand on the compute node

gns3server/controller/snapshot.py

@@ -55,12 +55,10 @@ class Snapshot:
             self._created_at = datetime.now(timezone.utc).timestamp()
             filename = self._name + "_" + datetime.fromtimestamp(self._created_at, tz=timezone.utc).replace(tzinfo=None).strftime(FILENAME_TIME_FORMAT) + ".gns3project"
         else:
-            self._name = filename.split("_")[0]
+            self._name = filename.rsplit("_", 2)[0]
             datestring = filename.replace(self._name + "_", "").split(".")[0]
-            try:
-                self._created_at = datetime.strptime(datestring, FILENAME_TIME_FORMAT).replace(tzinfo=timezone.utc).timestamp()
-            except ValueError:
-                self._created_at = datetime.now(timezone.utc)
+            self._created_at = datetime.strptime(datestring, FILENAME_TIME_FORMAT).replace(tzinfo=timezone.utc).timestamp()
+
         self._path = os.path.join(project.path, "snapshots", filename)
 
     @property