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add comprehensive MIME detection tests (50 tests)

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Cover all 42 magic byte signatures:
- Images: BMP, TIFF, ICO
- Video: MP4, WebM, FLV
- Audio: MP3, FLAC, OGG
- Documents: MS Office OLE
- Executables: PE, ELF, Mach-O, WASM
- Archives: BZIP2, XZ, ZSTD, LZ4, 7z, RAR
- Data: SQLite
- Edge cases: empty, short, boundary tests

Also adds missing Mach-O 32-bit little-endian signature.
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2025-12-25 20:36:49 +01:00
parent 11bb095ca6
commit 0496a39a91
4 changed files with 282 additions and 5 deletions
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7
app/api/routes.py
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@@ -70,9 +70,10 @@ MAGIC_SIGNATURES: dict[bytes, str] = {
# Executables
b"MZ": "application/x-msdownload", # EXE, DLL
b"\x7fELF": "application/x-executable", # ELF (Linux)
b"\xfe\xed\xfa\xce": "application/x-mach-binary", # Mach-O 32-bit
b"\xfe\xed\xfa\xcf": "application/x-mach-binary", # Mach-O 64-bit
b"\xcf\xfa\xed\xfe": "application/x-mach-binary", # Mach-O 64-bit (reversed)
b"\xfe\xed\xfa\xce": "application/x-mach-binary", # Mach-O 32-bit big-endian
b"\xce\xfa\xed\xfe": "application/x-mach-binary", # Mach-O 32-bit little-endian
b"\xfe\xed\xfa\xcf": "application/x-mach-binary", # Mach-O 64-bit big-endian
b"\xcf\xfa\xed\xfe": "application/x-mach-binary", # Mach-O 64-bit little-endian
b"\xca\xfe\xba\xbe": "application/x-mach-binary", # Mach-O fat/universal binary
b"\x00asm": "application/wasm", # WebAssembly
# Compression/Archives