Daan MeijerandClaude Opus 5.5
99b72ddd8f
For the junk judge: a "movie" whose first bytes are a program is fake. Two bytes alone match random data too often, so the PE signature where the DOS header points must be there too. No PROBE_VERSION bump: new probes only. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
21 lines
799 B
TypeScript
21 lines
799 B
TypeScript
import { test } from '@japa/runner'
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import { sniffContentType } from '#lib/content/sniff'
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test.group('content / sniff', () => {
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test('a Windows executable: MZ with a PE header where the DOS header points', ({ assert }) => {
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const exe = Buffer.alloc(0x100)
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exe.write('MZ', 0, 'latin1')
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exe.writeUInt32LE(0x80, 0x3c)
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exe.write('PE\0\0', 0x80, 'latin1')
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assert.equal(sniffContentType(exe), 'exe')
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// MZ alone (random data, a text) is no executable.
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const mz = Buffer.alloc(0x100)
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mz.write('MZ', 0, 'latin1')
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assert.isNull(sniffContentType(mz))
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// A pointer past the data: none.
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mz.writeUInt32LE(0xffff, 0x3c)
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assert.isNull(sniffContentType(mz))
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assert.equal(sniffContentType(Buffer.from([0x1a, 0x45, 0xdf, 0xa3, 0, 0, 0, 0])), 'matroska')
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})
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})
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