Daniel Bedeleanu
ea49cd6e4a
- Create backend/services/image_storage.py with 4 core functions:
- sanitize_filename(): remove unsafe chars, limit to 255 chars, convert to lowercase
- get_unique_filename(): handle collisions with UUID suffix (format: {name}_{uuid8}_{variant}.jpg)
- ensure_image_directories(): create /images/ root and category subdirs on startup
- save_image(): save bytes to /images/{category}/{filename}, returns relative path
- Create comprehensive test suite (22 tests) covering all functionality
- Integrate ensure_image_directories() into FastAPI startup event
- Directory structure: /images/{category}/{filename}
- Collision handling: auto-suffix with UUID if filename exists
- All tests passing, pathlib.Path for safe operations
54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
#
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# This file is part of pyasn1-modules software.
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#
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# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com>
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# License: http://snmplabs.com/pyasn1/license.html
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#
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# SNMPv3 message syntax
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#
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# ASN.1 source from:
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# http://www.ietf.org/rfc/rfc3412.txt
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#
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from pyasn1.type import constraint
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from pyasn1.type import namedtype
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from pyasn1.type import univ
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from pyasn1_modules import rfc1905
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class ScopedPDU(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('contextEngineId', univ.OctetString()),
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namedtype.NamedType('contextName', univ.OctetString()),
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namedtype.NamedType('data', rfc1905.PDUs())
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)
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class ScopedPduData(univ.Choice):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('plaintext', ScopedPDU()),
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namedtype.NamedType('encryptedPDU', univ.OctetString()),
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)
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class HeaderData(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('msgID',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(0, 2147483647))),
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namedtype.NamedType('msgMaxSize',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(484, 2147483647))),
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namedtype.NamedType('msgFlags', univ.OctetString().subtype(subtypeSpec=constraint.ValueSizeConstraint(1, 1))),
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namedtype.NamedType('msgSecurityModel',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(1, 2147483647)))
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)
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class SNMPv3Message(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('msgVersion',
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univ.Integer().subtype(subtypeSpec=constraint.ValueRangeConstraint(0, 2147483647))),
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namedtype.NamedType('msgGlobalData', HeaderData()),
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namedtype.NamedType('msgSecurityParameters', univ.OctetString()),
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namedtype.NamedType('msgData', ScopedPduData())
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)
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