105 lines
3.5 KiB
JavaScript
105 lines
3.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const FILE_ENTRY = "201: ";
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async function readJarDirectory(jarPath, installToDirPath) {
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let extractedPaths = [];
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// Construct a jar URI from the file URI so we can use the JAR URI scheme
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// handling to navigate inside the zip file.
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let jarResponse = await fetch(jarPath);
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let dirListing = await jarResponse.text();
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let lines = dirListing.split("\n");
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let reader = new FileReader();
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for (let line of lines) {
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if (!line.startsWith(FILE_ENTRY)) {
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// Not a file entry, skip.
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continue;
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}
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// code: entry size modified-time type
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let lineSplits = line.split(" ");
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let jarEntry = lineSplits[1];
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let jarType = lineSplits[4];
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// Descend into and flatten any subfolders.
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if (jarType === "DIRECTORY") {
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extractedPaths.push(
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...(await readJarDirectory(jarPath + jarEntry, installToDirPath))
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);
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continue;
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}
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let fileName = jarEntry.split("/").pop();
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// Only keep the binaries and metadata files.
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if (
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!fileName.endsWith(".info") &&
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!fileName.endsWith(".dll") &&
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!fileName.endsWith(".dylib") &&
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!fileName.endsWith(".sig") &&
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!fileName.endsWith(".so") &&
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!fileName.endsWith(".txt") &&
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fileName !== "LICENSE" &&
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fileName !== "manifest.json"
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) {
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continue;
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}
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let filePath = jarPath + jarEntry;
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let filePathResponse = await fetch(filePath);
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let fileContents = await filePathResponse.blob();
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let fileData = await new Promise(resolve => {
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reader.onloadend = function () {
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resolve(reader.result);
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};
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reader.readAsArrayBuffer(fileContents);
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});
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await IOUtils.makeDirectory(installToDirPath);
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// Do not extract into directories. Extract all files to the same
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// directory.
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let destPath = PathUtils.join(installToDirPath, fileName);
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await IOUtils.write(destPath, new Uint8Array(fileData), {
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tmpPath: destPath + ".tmp",
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});
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// Ensure files are writable and executable. Otherwise, we may be
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// unable to execute or uninstall them.
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await IOUtils.setPermissions(destPath, 0o700);
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if (IOUtils.delMacXAttr) {
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// If we're on MacOS Firefox will add the quarantine xattr to files it
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// downloads. In this case we want to clear that xattr so we can load
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// the CDM.
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try {
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await IOUtils.delMacXAttr(destPath, "com.apple.quarantine");
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} catch (e) {
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// Failed to remove the attribute. This could be because the profile
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// exists on a file system without xattr support.
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//
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// Don't fail the extraction here, as in this case it's likely we
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// didn't set quarantine on these files in the first place.
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}
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}
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extractedPaths.push(destPath);
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}
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return extractedPaths;
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}
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onmessage = async function (msg) {
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try {
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// Construct a jar URI from the file URI so we can use the JAR URI scheme
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// handling to navigate inside the zip file.
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let jarPath = "jar:" + msg.data.zipURI + "!/";
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let installToDirPath = PathUtils.join(
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await PathUtils.getProfileDir(),
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...msg.data.relativeInstallPath
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);
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let extractedPaths = await readJarDirectory(jarPath, installToDirPath);
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postMessage({
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result: "success",
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extractedPaths,
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});
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} catch (e) {
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postMessage({
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result: "fail",
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exception: e.message,
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});
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}
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};
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