|
| 1 | +'use strict'; |
| 2 | + |
| 3 | +const common = require('../common'); |
| 4 | +if (!common.hasCrypto) |
| 5 | + common.skip('missing crypto'); |
| 6 | + |
| 7 | +const assert = require('assert'); |
| 8 | +const { randomFill, randomFillSync } = require('crypto'); |
| 9 | + |
| 10 | +const typedArrays = [ |
| 11 | + Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, |
| 12 | + Int32Array, Uint32Array, Float32Array, Float64Array, |
| 13 | + BigInt64Array, BigUint64Array, |
| 14 | +]; |
| 15 | +if (globalThis.Float16Array !== undefined) |
| 16 | + typedArrays.push(globalThis.Float16Array); |
| 17 | + |
| 18 | +const factories = []; |
| 19 | +for (const Backing of [ArrayBuffer, SharedArrayBuffer]) { |
| 20 | + for (const Type of [...typedArrays, Buffer, DataView]) { |
| 21 | + const elementSize = Type.BYTES_PER_ELEMENT || 1; |
| 22 | + factories.push({ |
| 23 | + name: `${Type.name} on ${Backing.name}`, |
| 24 | + elementSize, |
| 25 | + make(length = 64) { |
| 26 | + const backing = new Backing(length + 64); |
| 27 | + const input = Type === Buffer ? Buffer.from(backing, 32, length) : |
| 28 | + new Type(backing, 32, length / elementSize); |
| 29 | + return { input, backing, bytes: new Uint8Array(backing), start: 32, length }; |
| 30 | + }, |
| 31 | + }); |
| 32 | + } |
| 33 | + factories.push({ |
| 34 | + name: Backing.name, |
| 35 | + elementSize: 1, |
| 36 | + make(length = 64) { |
| 37 | + const input = new Backing(length); |
| 38 | + return { input, backing: input, bytes: new Uint8Array(input), start: 0, length }; |
| 39 | + }, |
| 40 | + }); |
| 41 | +} |
| 42 | + |
| 43 | +function shadowMetadata(target, mode) { |
| 44 | + const values = { |
| 45 | + byteLength: mode === 'zero' ? 0 : 4096, |
| 46 | + length: mode === 'zero' ? 0 : 4096, |
| 47 | + BYTES_PER_ELEMENT: mode === 'zero' ? 0 : 4096, |
| 48 | + buffer: new ArrayBuffer(0), |
| 49 | + byteOffset: mode === 'zero' ? 0 : 4096, |
| 50 | + [Symbol.toStringTag]: 'NotAnArrayBufferView', |
| 51 | + }; |
| 52 | + for (const key of Reflect.ownKeys(values)) { |
| 53 | + Object.defineProperty(target, key, mode === 'getters' ? |
| 54 | + { get: common.mustNotCall(`Unexpected ${String(key)} getter`) } : |
| 55 | + { value: values[key] }); |
| 56 | + } |
| 57 | +} |
| 58 | + |
| 59 | +function checkFilled({ input, bytes, start }, result, offset, size, label) { |
| 60 | + assert.strictEqual(result, input, label); |
| 61 | + assert(bytes.subarray(0, start + offset).every((byte) => byte === 0), label); |
| 62 | + assert(bytes.subarray(start + offset + size).every((byte) => byte === 0), label); |
| 63 | + // Every nonempty test range contains at least 32 random bytes. Detect a |
| 64 | + // no-op without assuming that any particular generated byte is nonzero. |
| 65 | + if (size !== 0) |
| 66 | + assert(bytes.subarray(start + offset, start + offset + size).some((byte) => byte !== 0), label); |
| 67 | +} |
| 68 | + |
| 69 | +for (const factory of factories) { |
| 70 | + const { elementSize } = factory; |
| 71 | + const ranges = [ |
| 72 | + { args: [], offset: 0, size: 64 }, |
| 73 | + { args: [16 / elementSize], offset: 16, size: 48 }, |
| 74 | + { args: [16 / elementSize, 32 / elementSize], offset: 16, size: 32 }, |
| 75 | + { args: [16 / elementSize, undefined], offset: 16, size: 48 }, |
| 76 | + { args: [64 / elementSize], offset: 64, size: 0 }, |
| 77 | + ]; |
| 78 | + for (const mode of ['getters', 'zero', 'inflated']) { |
| 79 | + for (const { args, offset, size } of ranges) { |
| 80 | + for (const async of [false, true]) { |
| 81 | + const value = factory.make(); |
| 82 | + shadowMetadata(value.input, mode); |
| 83 | + if (value.backing !== value.input) |
| 84 | + shadowMetadata(value.backing, mode); |
| 85 | + const label = `${factory.name}, ${mode}, ${async ? 'async' : 'sync'}, ${args}`; |
| 86 | + if (async) { |
| 87 | + assert.strictEqual(randomFill(value.input, ...args, common.mustSucceed((result) => { |
| 88 | + checkFilled(value, result, offset, size, label); |
| 89 | + })), undefined); |
| 90 | + } else { |
| 91 | + checkFilled(value, randomFillSync(value.input, ...args), offset, size, label); |
| 92 | + } |
| 93 | + } |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + // Inflated public bounds must not let an invalid range reach the native job. |
| 98 | + // Keep the real element width here so each range exceeds the actual buffer. |
| 99 | + const units = 64 / elementSize; |
| 100 | + for (const args of [[units + 1], [0, units + 1], [units, 1]]) { |
| 101 | + const { input } = factory.make(); |
| 102 | + Object.defineProperties(input, { |
| 103 | + byteLength: { value: 4096 }, |
| 104 | + length: { value: 4096 }, |
| 105 | + }); |
| 106 | + assert.throws(() => randomFillSync(input, ...args), { code: 'ERR_OUT_OF_RANGE' }); |
| 107 | + assert.throws(() => randomFill(input, ...args, common.mustNotCall()), { |
| 108 | + code: 'ERR_OUT_OF_RANGE', |
| 109 | + }); |
| 110 | + } |
| 111 | + |
| 112 | + for (const args of [[], [0], [0, 0], [0, undefined]]) { |
| 113 | + const value = factory.make(0); |
| 114 | + shadowMetadata(value.input, 'inflated'); |
| 115 | + checkFilled(value, randomFillSync(value.input, ...args), 0, 0, factory.name); |
| 116 | + assert.strictEqual(randomFill(value.input, ...args, common.mustSucceed((result) => { |
| 117 | + checkFilled(value, result, 0, 0, factory.name); |
| 118 | + })), undefined); |
| 119 | + } |
| 120 | +} |
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