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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* eslint-env mozilla/chrome-worker */
"use strict";
const FILE_ENTRY = "201: ";
onmessage = async function (msg) {
try {
let extractedPaths = [];
// Construct a jar URI from the file URI so we can use the JAR URI scheme
// handling to navigate inside the zip file.
let jarPath = "jar:" + msg.data.zipURI + "!/";
let jarResponse = await fetch(jarPath);
let dirListing = await jarResponse.text();
let lines = dirListing.split("\n");
let reader = new FileReader();
for (let line of lines) {
if (!line.startsWith(FILE_ENTRY)) {
// Not a file entry, skip.
continue;
}
let lineSplits = line.split(" ");
let fileName = lineSplits[1];
// We don't need these types of files.
if (
fileName == "verified_contents.json" ||
fileName == "icon-128x128.png"
) {
continue;
}
let filePath = jarPath + fileName;
let filePathResponse = await fetch(filePath);
let fileContents = await filePathResponse.blob();
let fileData = await new Promise(resolve => {
reader.onloadend = function () {
resolve(reader.result);
};
reader.readAsArrayBuffer(fileContents);
});
let installToDirPath = PathUtils.join(
await PathUtils.getProfileDir(),
...msg.data.relativeInstallPath
);
await IOUtils.makeDirectory(installToDirPath);
// Do not extract into directories. Extract all files to the same
// directory.
let destPath = PathUtils.join(installToDirPath, fileName);
await IOUtils.write(destPath, new Uint8Array(fileData), {
tmpPath: destPath + ".tmp",
});
// Ensure files are writable and executable. Otherwise, we may be
// unable to execute or uninstall them.
await IOUtils.setPermissions(destPath, 0o700);
if (IOUtils.delMacXAttr) {
// If we're on MacOS Firefox will add the quarantine xattr to files it
// downloads. In this case we want to clear that xattr so we can load
// the CDM.
try {
await IOUtils.delMacXAttr(destPath, "com.apple.quarantine");
} catch (e) {
// Failed to remove the attribute. This could be because the profile
// exists on a file system without xattr support.
//
// Don't fail the extraction here, as in this case it's likely we
// didn't set quarantine on these files in the first place.
}
}
extractedPaths.push(destPath);
}
postMessage({
result: "success",
extractedPaths,
});
} catch (e) {
postMessage({
result: "fail",
exception: e.message,
});
}
};
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