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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| import { randomBytes } from 'node:crypto'; | ||
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| import { Environment } from './index'; | ||
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| // Dotenv Expansion Implementation | ||
| // | ||
| // Copyright (c) 2016, Scott Motte | ||
| // All rights reserved. | ||
| // | ||
| // Redistribution and use in source and binary forms, with or without | ||
| // modification, are permitted provided that the following conditions are met: | ||
| // | ||
| // * Redistributions of source code must retain the above copyright notice, this | ||
| // list of conditions and the following disclaimer. | ||
| // | ||
| // * Redistributions in binary form must reproduce the above copyright notice, | ||
| // this list of conditions and the following disclaimer in the documentation | ||
| // and/or other materials provided with the distribution. | ||
| // | ||
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| const dotenv = { | ||
| INTERPOLATE_SUBSTITUTION_REGEX: | ||
| /(\\)?(\$)(?!\()(\{?)([\w.]+)(?::?-((?:\$\{(?:\$\{(?:\$\{[^}]*\}|[^}])*}|[^}])*}|[^}])+))?(\}?)/gi, | ||
| resolveEscapeSequences: (value: string): string => { | ||
| return value.replace(/\\\$/g, '$'); | ||
| }, | ||
| interpolate: (value: string, parsed: Record<string, string>): string => { | ||
| return value.replace( | ||
| dotenv.INTERPOLATE_SUBSTITUTION_REGEX, | ||
| (match, escaped, dollarSign, openBrace, key, defaultValue) => { | ||
| if (escaped === '\\') return match.slice(1); | ||
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| if (parsed[key]) { | ||
| // avoid recursion from EXPAND_SELF=$EXPAND_SELF | ||
| if (parsed[key] === value) { | ||
| return parsed[key]; | ||
| } else { | ||
| return dotenv.interpolate(parsed[key], parsed); | ||
| } | ||
| } | ||
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| if (defaultValue) { | ||
| if (defaultValue.startsWith('$')) { | ||
| return dotenv.interpolate(defaultValue, parsed); | ||
| } else { | ||
| return defaultValue; | ||
| } | ||
| } | ||
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| return ''; | ||
| }, | ||
| ); | ||
| }, | ||
| expand: (env: Record<string, string>): Record<string, string> => { | ||
| const copied = { ...env }; | ||
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| for (const key in copied) { | ||
| const value = dotenv.interpolate(copied[key], copied); | ||
| copied[key] = dotenv.resolveEscapeSequences(value); | ||
| } | ||
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| return copied; | ||
| }, | ||
| }; | ||
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| export function synthEnv(environment: Environment): Record<string, string> { | ||
| return dotenv.expand( | ||
| Object.entries(environment).reduce( | ||
| (env, [key, factory]) => { | ||
| if (factory.type === 'RandomBytes') { | ||
| env[key] = randomBytes(factory.length).toString(factory.encoding); | ||
| return env; | ||
| } | ||
| if (factory.type === 'Value') { | ||
| env[key] = factory.value; | ||
| return env; | ||
| } | ||
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| // if (factory.type === 'Injection') { | ||
| // TODO: Prompt if CLI, inject if constructs. | ||
| // To allow for simple configuration, e.g. Masternode Keys. | ||
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| // @ts-expect-error so that we error out if we forget to handle a new factory type | ||
| throw new Error(`Unsupported Environment Factory: ${factory.type}`); | ||
| }, | ||
| {} as Record<string, string>, | ||
| ), | ||
| ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| import { expect, it } from '@jest/globals'; | ||
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| import { Environment } from '.'; | ||
| import { synthEnv } from './environment'; | ||
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| it('should expand environment', async () => { | ||
| const environment: Environment = { | ||
| USER: { | ||
| type: 'RandomBytes', | ||
| length: 8, | ||
| encoding: 'hex', | ||
| }, | ||
| PASS: { | ||
| type: 'RandomBytes', | ||
| length: 16, | ||
| encoding: 'hex', | ||
| }, | ||
| URL: { | ||
| type: 'Value', | ||
| value: `http://$USER:$PASS@localhost:3000000`, | ||
| }, | ||
| DEBUG: { | ||
| type: 'Value', | ||
| value: 'karfia:*', | ||
| }, | ||
| }; | ||
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| expect(synthEnv(environment)).toStrictEqual({ | ||
| USER: expect.stringMatching(/[0-9a-f]{16}/), | ||
| PASS: expect.stringMatching(/[0-9a-f]{32}/), | ||
| URL: expect.stringMatching(/http:\/\/[0-9a-f]{16}:[0-9a-f]{32}@localhost:3000000/), | ||
| DEBUG: 'karfia:*', | ||
| }); | ||
| }); |
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