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Copy fake EpicGamesLauncher.exe for games flagged with env variable #4385

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Copy fake EpicGamesLauncher.exe for games flagged with env variable #4385

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Binary file added public/bin/EpicGamesLauncher.exe
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Collaborator Author

@arielj arielj Mar 4, 2025 •
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I think this file is small enough and shouldn't really require changes in the future often, I think it's safe to include it in the build directly to make it simpler

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4 changes: 4 additions & 0 deletions src/backend/constants.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,9 @@ const gogdlAuthConfig = join(app.getPath('userData'), 'gog_store', 'auth.json')
const vulkanHelperBin = fixAsarPath(
join(publicDir, 'bin', process.arch, process.platform, 'vulkan-helper')
)
const fakeEpicExePath = fixAsarPath(
join(publicDir, 'bin', 'EpicGamesLauncher.exe')
)
const icon = fixAsarPath(join(publicDir, 'icon.png'))
const iconDark = fixAsarPath(join(publicDir, 'icon-dark.png'))
const iconLight = fixAsarPath(join(publicDir, 'icon-light.png'))
Expand Down Expand Up @@ -239,6 +242,7 @@ export {
nileLogFile,
discordLink,
execOptions,
fakeEpicExePath,
fixAsarPath,
configStore,
configPath,
Expand Down
24 changes: 21 additions & 3 deletions src/backend/storeManagers/legendary/games.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { existsSync } from 'graceful-fs'
import { copyFileSync, existsSync } from 'graceful-fs'
import axios from 'axios'

import {
Expand Down Expand Up @@ -40,7 +40,8 @@ import {
configStore,
isCLINoGui,
isLinux,
epicRedistPath
epicRedistPath,
fakeEpicExePath
} from '../../constants'
import {
appendGamePlayLog,
Expand All @@ -59,7 +60,8 @@ import {
launchCleanup,
getRunnerCallWithoutCredentials,
runWineCommand as runWineCommandUtil,
getKnownFixesEnvVariables
getKnownFixesEnvVariables,
getWinePath
} from '../../launcher'
import {
addShortcuts as addShortcutsUtil,
Expand Down Expand Up @@ -876,6 +878,22 @@ export async function launch(
...getKnownFixesEnvVariables(appName, 'legendary')
}

// We can get this env variable either from the game's settings or from known fixes
if (commandEnv['USE_FAKE_EPIC_EXE']) {
const fakeExeWinPath = 'C:\\windows\\command\\EpicGamesLauncher.exe'
const fakeEpicExePathInPrefix = await getWinePath({
path: fakeExeWinPath,
gameSettings,
variant: 'unix'
})

// we copy the file inside the prefix to avoid permission issues
if (!existsSync(fakeEpicExePathInPrefix))
copyFileSync(fakeEpicExePath, fakeEpicExePathInPrefix)

commandEnv['LEGENDARY_WRAPPER_EXE'] = fakeExeWinPath
}

const wrappers = setupWrappers(
gameSettings,
mangoHudCommand,
Expand Down
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