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59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. 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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import re
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from flask_babel import lazy_gettext as _
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from sqlalchemy.engine.url import URL
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from sqlalchemy.exc import NoSuchModuleError
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from superset import feature_flag_manager
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from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
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from superset.exceptions import SupersetSecurityException
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# list of unsafe SQLAlchemy dialects
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BLOCKLIST = {
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# sqlite creates a local DB, which allows mapping server's filesystem
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re.compile(r"sqlite(?:\+[^\s]*)?$"),
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# shillelagh allows opening local files (eg, 'SELECT * FROM "csv:///etc/passwd"')
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re.compile(r"shillelagh$"),
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re.compile(r"shillelagh\+apsw$"),
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}
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def check_sqlalchemy_uri(uri: URL) -> None:
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if not feature_flag_manager.is_feature_enabled("ENABLE_SUPERSET_META_DB"):
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BLOCKLIST.add(re.compile(r"superset$"))
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for blocklist_regex in BLOCKLIST:
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if not re.match(blocklist_regex, uri.drivername):
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continue
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try:
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dialect = uri.get_dialect().__name__
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except (NoSuchModuleError, ValueError):
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dialect = uri.drivername
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raise SupersetSecurityException(
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SupersetError(
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error_type=SupersetErrorType.DATABASE_SECURITY_ACCESS_ERROR,
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message=_(
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"%(dialect)s cannot be used as a data source for security reasons.",
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dialect=dialect,
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),
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level=ErrorLevel.ERROR,
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)
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)
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