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
114 lines
2.3 KiB
Python
114 lines
2.3 KiB
Python
# This file is being contributed to pyasn1-modules software.
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#
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# Created by Russ Housley.
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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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# Traceable Anonymous Certificate
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#
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# ASN.1 source from:
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# https://www.rfc-editor.org/rfc/rfc5480.txt
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from pyasn1.type import namedtype
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from pyasn1.type import univ
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from pyasn1.type import useful
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from pyasn1_modules import rfc5652
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# Imports from RFC 5652
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ContentInfo = rfc5652.ContentInfo
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EncapsulatedContentInfo = rfc5652.EncapsulatedContentInfo
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id_data = rfc5652.id_data
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# Object Identifiers
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id_KISA = univ.ObjectIdentifier((1, 2, 410, 200004,))
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id_npki = id_KISA + (10,)
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id_attribute = id_npki + (1,)
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id_kisa_tac = id_attribute + (1,)
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id_kisa_tac_token = id_kisa_tac + (1,)
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id_kisa_tac_tokenandblindbash = id_kisa_tac + (2,)
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id_kisa_tac_tokenandpartially = id_kisa_tac + (3,)
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# Structures for Traceable Anonymous Certificate (TAC)
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class UserKey(univ.OctetString):
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pass
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class Timeout(useful.GeneralizedTime):
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pass
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class BlinedCertificateHash(univ.OctetString):
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pass
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class PartiallySignedCertificateHash(univ.OctetString):
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pass
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class Token(ContentInfo):
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pass
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class TokenandBlindHash(ContentInfo):
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pass
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class TokenandPartiallySignedCertificateHash(ContentInfo):
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pass
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# Added to the module in RFC 5636 for the CMS Content Type Map
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class TACToken(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('userKey', UserKey()),
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namedtype.NamedType('timeout', Timeout())
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)
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class TACTokenandBlindHash(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('token', Token()),
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namedtype.NamedType('blinded', BlinedCertificateHash())
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)
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class TACTokenandPartiallySignedCertificateHash(univ.Sequence):
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componentType = namedtype.NamedTypes(
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namedtype.NamedType('token', Token()),
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namedtype.NamedType('partially', PartiallySignedCertificateHash())
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)
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# Add to the CMS Content Type Map in rfc5752.py
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_cmsContentTypesMapUpdate = {
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id_kisa_tac_token: TACToken(),
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id_kisa_tac_tokenandblindbash: TACTokenandBlindHash(),
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id_kisa_tac_tokenandpartially: TACTokenandPartiallySignedCertificateHash(),
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}
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rfc5652.cmsContentTypesMap.update(_cmsContentTypesMapUpdate)
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