mirror of
https://github.com/infiniflow/ragflow.git
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52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
#
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# Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import io
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import base64
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import pickle
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from api.utils.common import bytes_to_string, string_to_bytes
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safe_module = {"numpy", "rag_flow"}
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class RestrictedUnpickler(pickle.Unpickler):
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def find_class(self, module, name):
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import importlib
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if module.split(".")[0] in safe_module:
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_module = importlib.import_module(module)
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return getattr(_module, name)
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# Forbid everything else.
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raise pickle.UnpicklingError("global '%s.%s' is forbidden" % (module, name))
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def restricted_loads(src):
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"""Helper function analogous to pickle.loads()."""
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return RestrictedUnpickler(io.BytesIO(src)).load()
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def serialize_b64(src, to_str=False):
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dest = base64.b64encode(pickle.dumps(src))
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if not to_str:
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return dest
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else:
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return bytes_to_string(dest)
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def deserialize_b64(src):
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src = base64.b64decode(string_to_bytes(src) if isinstance(src, str) else src)
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return restricted_loads(src)
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