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
50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
#
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# This file is part of pyasn1-modules software.
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#
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# Created by Russ Housley with assistance from asn1ate v.0.6.0.
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#
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# Copyright (c) 2019, Vigil Security, LLC
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# License: http://snmplabs.com/pyasn1/license.html
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#
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# Multiple Signatures in Cryptographic Message Syntax (CMS)
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#
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# ASN.1 source from:
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# https://www.rfc-editor.org/rfc/rfc5752.txt
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# https://www.rfc-editor.org/errata/eid4444
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#
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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 rfc5035
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from pyasn1_modules import rfc5652
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class SignAttrsHash(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('algID', rfc5652.DigestAlgorithmIdentifier()),
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namedtype.NamedType('hash', univ.OctetString())
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)
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class MultipleSignatures(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('bodyHashAlg', rfc5652.DigestAlgorithmIdentifier()),
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namedtype.NamedType('signAlg', rfc5652.SignatureAlgorithmIdentifier()),
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namedtype.NamedType('signAttrsHash', SignAttrsHash()),
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namedtype.OptionalNamedType('cert', rfc5035.ESSCertIDv2())
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)
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id_aa_multipleSignatures = univ.ObjectIdentifier('1.2.840.113549.1.9.16.2.51')
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# Map of Attribute Type OIDs to Attributes added to the
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# ones that are in rfc5652.py
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_cmsAttributesMapUpdate = {
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id_aa_multipleSignatures: MultipleSignatures(),
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}
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rfc5652.cmsAttributesMap.update(_cmsAttributesMapUpdate)
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