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September 16, 2024 15:13
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Script that re-entitles the macOS Valheim app to be moddable with runtime code-injection wrappers like BepInEx. For arm64, you'd probably need to still run the app with an x86_64 emulator like Apple Rosetta 2. You may need to run with sudo to re-sign the App Store version in /Applications.
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| #!/usr/bin/env sh | |
| set -e | |
| VALHEIM_APP_PATH=${1:-"${HOME}/Library/Application Support/Steam/SteamApps/common/Valheim/valheim.app"} | |
| BEPINEX_FRIENDLY_ENTITLEMENTS='<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple.com/DTDs/PropertyList-1.0.dtd"><plist version="1.0"><dict><key>com.apple.security.cs.allow-jit</key><true/><key>com.apple.security.cs.disable-library-validation</key><true/><key>com.apple.security.device.bluetooth</key><true/><key>com.apple.security.device.usb</key><true/><key>com.apple.security.network.client</key><true/><key>com.apple.security.network.server</key><true/><key>com.apple.security.cs.allow-dyld-environment-variables</key><true/></dict></plist>' | |
| ENTITLEMENTS_PATH='/tmp/revised_valheim_entitlements.plist' | |
| main() { | |
| read -p " | |
| Re-signing and re-entitling Valheim at | |
| $VALHEIM_APP_PATH | |
| This will remove any Iron Gate or Coffee Stain signatures and replace them with adhoc signatures | |
| that no longer identify the developer or publisher. It does this while entitling the app to have | |
| runtime code injected for the sake of modding. The changes will be overwritten when you upgrade | |
| or reinstall the app. This will likely be fixed in the official version soon anyway and you should | |
| probably just wait. | |
| Do you want to continue anyway (y/n)? | |
| " choice | |
| case "$choice" in | |
| y|Y|[yY]es ) re_sign_bins_with_dyld_hacks;; | |
| n|N ) exit 0;; | |
| * ) echo "didn't understand, exiting" && exit;; | |
| esac | |
| } | |
| re_sign_bins_with_dyld_hacks() { | |
| echo $BEPINEX_FRIENDLY_ENTITLEMENTS > "${ENTITLEMENTS_PATH}" | |
| contents_path="${VALHEIM_APP_PATH}/Contents" | |
| for f in "${contents_path}/Frameworks"/*.dylib "${contents_path}/Plugins"/*.dylib "${contents_path}/Plugins"/*.bundle | |
| do re_sign_bin "${f}" | |
| done | |
| re_sign_bin "${contents_path}/MacOS/Valheim" | |
| re_sign_bin "${VALHEIM_APP_PATH}" | |
| } | |
| re_sign_bin() { | |
| echo "Re-signing $1" | |
| codesign --sign - -vvvv --force --options runtime --entitlements "${ENTITLEMENTS_PATH}" "$1" | |
| } | |
| main |
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