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import { promisify } from "util";
import { eventsRoot } from "consts";
import {
FileReaderFn,
ScriptEventHandlerWithCleanup,
} from "lib/scriptEventsHandlers/handlerTypes";
import { readFile, readFileSync } from "fs-extra";
import { loadScriptEventHandlerFromUntrustedString } from "lib/scriptEventsHandlers/untrustedHandler";
import { loadScriptEventHandlerFromTrustedString } from "lib/scriptEventsHandlers/trustedHandler";
import { dirname, join } from "path";
import { isAssetWithinProject } from "lib/helpers/assets";
import l10n from "shared/lib/lang/l10n";
const globAsync = promisify(glob);
const eventHandlers: Record<string, ScriptEventHandlerWithCleanup> = {};
const fileCache = new Map<string, string | Buffer>();
const loadUntrustedScriptEventHandler = async (
path: string,
fileReader: FileReaderFn,
): Promise<ScriptEventHandlerWithCleanup> => {
const handlerCode = await readFile(path, "utf8");
return loadScriptEventHandlerFromUntrustedString(
handlerCode,
path,
fileReader,
);
};
const loadTrustedScriptEventHandler = async (
path: string,
fileReader: FileReaderFn,
): Promise<ScriptEventHandlerWithCleanup> => {
const handlerCode = await readFile(path, "utf8");
return loadScriptEventHandlerFromTrustedString(handlerCode, path, fileReader);
};
const cleanupScriptEventHandlers = () => {
for (const key in eventHandlers) {
const handler = eventHandlers[key];
if (handler) {
handler.cleanup();
delete eventHandlers[key];
}
}
};
const cleanupFileCache = () => {
fileCache.clear();
};
const cacheKey = (absPath: string, enc?: BufferEncoding) =>
`${absPath}::${enc ?? "<binary>"}`;
const createFileReaderForHandler = (pluginPath: string): FileReaderFn => {
const dirPath = dirname(pluginPath);
function readPluginFile(filePath: string, encoding: "utf8"): string;
function readPluginFile(
filePath: string,
encoding?: BufferEncoding,
): string | Buffer;
function readPluginFile(filePath: string, encoding?: BufferEncoding) {
const absPath = join(dirPath, filePath);
guardFileWithinPlugin(absPath, dirPath);
const key = cacheKey(absPath, encoding);
const cached = fileCache.get(key);
Iif (cached !== undefined) {
return cached;
}
const value = readFileSync(absPath, encoding);
fileCache.set(key, value);
return value;
}
return readPluginFile;
};
export const guardFileWithinPlugin = (
assetPath: string,
projectRoot: string,
) => {
Iif (!isAssetWithinProject(assetPath, projectRoot)) {
throw new Error(
l10n("ERROR_FILE_DOESNT_BELONG_TO_CURRENT_PLUGIN", { file: assetPath }),
);
}
};
const loadAllScriptEventHandlers = async (projectRoot: string) => {
cleanupScriptEventHandlers();
cleanupFileCache();
const forceUntrusted = process.env.FORCE_QUICKJS_PLUGINS === "true";
const corePaths = await globAsync(`${eventsRoot}/event*.js`);
const pluginPaths = await globAsync(
`${projectRoot}/plugins/*/**/events/event*.js`,
);
const trustedHandler = forceUntrusted
? loadUntrustedScriptEventHandler
: loadTrustedScriptEventHandler;
for (const path of corePaths) {
const handler = await trustedHandler(
path,
createFileReaderForHandler(path),
);
eventHandlers[handler.id] = handler;
}
for (const path of pluginPaths) {
const handler = await loadUntrustedScriptEventHandler(
path,
createFileReaderForHandler(path),
);
eventHandlers[handler.id] = handler;
}
return eventHandlers;
};
export default loadAllScriptEventHandlers;
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