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peertube/server/helpers/custom-validators/misc.ts

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import 'multer'
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import validator from 'validator'
import { sep } from 'path'
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function exists (value: any) {
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return value !== undefined && value !== null
}
function isSafePath (p: string) {
return exists(p) &&
(p + '').split(sep).every(part => {
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return [ '..' ].includes(part) === false
})
}
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function isArray (value: any) {
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return Array.isArray(value)
}
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function isNotEmptyIntArray (value: any) {
return Array.isArray(value) && value.every(v => validator.isInt('' + v)) && value.length !== 0
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}
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function isArrayOf (value: any, validator: (value: any) => boolean) {
return isArray(value) && value.every(v => validator(v))
}
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function isDateValid (value: string) {
return exists(value) && validator.isISO8601(value)
}
function isIdValid (value: string) {
return exists(value) && validator.isInt('' + value)
}
function isUUIDValid (value: string) {
return exists(value) && validator.isUUID('' + value, 4)
}
function isIdOrUUIDValid (value: string) {
return isIdValid(value) || isUUIDValid(value)
}
function isBooleanValid (value: any) {
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return typeof value === 'boolean' || (typeof value === 'string' && validator.isBoolean(value))
}
function toIntOrNull (value: string) {
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const v = toValueOrNull(value)
if (v === null || v === undefined) return v
if (typeof v === 'number') return v
return validator.toInt('' + v)
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}
function toBooleanOrNull (value: any) {
const v = toValueOrNull(value)
if (v === null || v === undefined) return v
if (typeof v === 'boolean') return v
return validator.toBoolean('' + v)
}
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function toValueOrNull (value: string) {
if (value === 'null') return null
return value
}
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function toArray (value: any) {
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if (value && isArray(value) === false) return [ value ]
return value
}
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function toIntArray (value: any) {
if (!value) return []
if (isArray(value) === false) return [ validator.toInt(value) ]
return value.map(v => validator.toInt(v))
}
function isFileValid (
files: { [ fieldname: string ]: Express.Multer.File[] } | Express.Multer.File[],
mimeTypeRegex: string,
field: string,
maxSize: number | null,
optional = false
) {
// Should have files
if (!files) return optional
if (isArray(files)) return optional
// Should have a file
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const fileArray = files[field]
if (!fileArray || fileArray.length === 0) {
return optional
}
// The file should exist
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const file = fileArray[0]
if (!file || !file.originalname) return false
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// Check size
if ((maxSize !== null) && file.size > maxSize) return false
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return new RegExp(`^${mimeTypeRegex}$`, 'i').test(file.mimetype)
}
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// ---------------------------------------------------------------------------
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export {
exists,
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isArrayOf,
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isNotEmptyIntArray,
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isArray,
isIdValid,
isSafePath,
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isUUIDValid,
isIdOrUUIDValid,
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isDateValid,
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toValueOrNull,
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toBooleanOrNull,
isBooleanValid,
toIntOrNull,
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toArray,
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toIntArray,
isFileValid
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}