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38 lines
1.0 KiB
TypeScript
38 lines
1.0 KiB
TypeScript
import { Raw } from '@dbTools/typeorm'
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import { User as DbUser } from '@entity/User'
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import { LogError } from '@/server/LogError'
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const reservedAlias = [
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'admin',
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'email',
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'gast',
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'gdd',
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'gradido',
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'guest',
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'home',
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'root',
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'support',
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'temp',
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'tmp',
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'tmp',
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'user',
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'usr',
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'var',
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]
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export const validateAlias = async (alias: string): Promise<void> => {
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if (alias.length < 3) throw new LogError('Given alias is too short', alias)
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if (alias.length > 20) throw new LogError('Given alias is too long', alias)
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/* eslint-disable-next-line security/detect-unsafe-regex */
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if (!alias.match(/^[0-9A-Za-z]([_-]?[A-Za-z0-9])+$/))
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throw new LogError('Invalid characters in alias', alias)
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if (reservedAlias.includes(alias.toLowerCase())) throw new LogError('Alias is not allowed', alias)
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const aliasInUse = await DbUser.find({
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where: { alias: Raw((a) => `LOWER(${a}) = "${alias.toLowerCase()}"`) },
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})
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if (aliasInUse.length !== 0) {
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throw new LogError('Alias already in use', alias)
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}
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}
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