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-rw-r--r--extras/packetforge/ProtocolHeaderField.py48
1 files changed, 48 insertions, 0 deletions
diff --git a/extras/packetforge/ProtocolHeaderField.py b/extras/packetforge/ProtocolHeaderField.py
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index 00000000000..bcb88214931
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+++ b/extras/packetforge/ProtocolHeaderField.py
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+# Copyright (c) 2022 Intel and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import ExpressionConverter
+
+
+class ProtocolHeaderField:
+ def __init__(self, Size, Value, Mask, Field):
+ self.Size = Size
+ self.Value = Value
+ self.Mask = Mask
+ self.Field = Field
+
+ def UpdateValue(self, expression, auto):
+ if self.Field.IsReadonly and not auto:
+ return False
+
+ if expression != None:
+ ret, _ = ExpressionConverter.Verify(self.Field.Format, expression)
+ if not ret:
+ return False
+
+ self.Value = expression
+ return True
+
+ def UpdateMask(self, expression):
+ if expression != None:
+ ret, _ = ExpressionConverter.Verify(self.Field.Format, expression)
+ if not ret:
+ return False
+
+ self.Mask = expression
+ return True
+
+ def UpdateSize(self):
+ if self.Size:
+ return
+ self.Size = self.Field.Size