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feat: add support for loading webpack assets via custom protocol #3511
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| import * as path from 'path'; | ||
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| // eslint-disable-next-line node/no-unpublished-import | ||
| import { protocol } from 'electron'; | ||
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| import type { WebpackPluginConfig } from '../Config'; | ||
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| type InternalConfig = Required<Required<WebpackPluginConfig>['customProtocolForPackagedAssets']>; | ||
| declare const __ELECTRON_FORGE_INTERNAL_PROTOCOL_CONFIGURATION__: InternalConfig; | ||
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| const config: InternalConfig = __ELECTRON_FORGE_INTERNAL_PROTOCOL_CONFIGURATION__ as any; | ||
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| const appRoot = path.join(__dirname, '..'); | ||
| const rendererRoot = path.join(appRoot, 'renderer'); | ||
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| const STATUS_CODE_BAD_REQUEST = 400; | ||
| const STATUS_CODE_FORBIDDEN = 403; | ||
| const STATUS_CODE_INTERNAL_SERVER_ERROR = 500; | ||
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| protocol.registerFileProtocol(config.protocolName, (request, cb) => { | ||
| try { | ||
| const requestUrl = new URL(decodeURI(request.url)); | ||
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| if (requestUrl.protocol !== `${config.protocolName}:`) { | ||
| return cb({ statusCode: STATUS_CODE_BAD_REQUEST }); | ||
| } | ||
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| if (request.url.includes('..')) { | ||
| return cb({ statusCode: STATUS_CODE_FORBIDDEN }); | ||
| } | ||
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| if (requestUrl.host !== 'renderer') { | ||
| return cb({ statusCode: STATUS_CODE_BAD_REQUEST }); | ||
| } | ||
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| if (!requestUrl.pathname || requestUrl.pathname === '/') { | ||
| return cb({ statusCode: STATUS_CODE_BAD_REQUEST }); | ||
| } | ||
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| // Resolve relative to appRoot | ||
| const filePath = path.join(appRoot, requestUrl.pathname); | ||
| // But ensure we are within the rendererRoot | ||
| const relative = path.relative(rendererRoot, filePath); | ||
| const isSafe = relative && !relative.startsWith('..') && !path.isAbsolute(relative); | ||
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| if (!isSafe) { | ||
| return cb({ statusCode: STATUS_CODE_BAD_REQUEST }); | ||
| } | ||
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| return cb({ path: filePath }); | ||
| } catch (error) { | ||
| const errorMessage = `Unexpected error in ${config.protocolName}:// protocol handler.`; | ||
| console.error(errorMessage, error); | ||
| return cb({ statusCode: STATUS_CODE_INTERNAL_SERVER_ERROR }); | ||
| } | ||
| }); | ||
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| protocol.registerSchemesAsPrivileged([ | ||
| { | ||
| scheme: config.protocolName, | ||
| privileges: config.privileges, | ||
| }, | ||
| ]); | ||
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Isn't this call deprecated in the recent Electron versions and instead one should use "handle"?
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Yeah, but it's not gonna be removed any time soon and we can migrate at some point in the future. This at the moment is more performant that
handlefor complicated reasons so to avoid issues around that we'll use the deprecated API for a bit