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Enable MD5 Verification #3

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5e21a3b
Create md5.js
penn5 Jun 21, 2018
2652490
Update downloadWithProgress.js
penn5 Jun 21, 2018
b623294
Update downloadWithProgress.js
penn5 Jun 21, 2018
fb8160b
enable md5 verification 2
penn5 Jun 21, 2018
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4 changes: 2 additions & 2 deletions download.js
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ mkdirpromise(destination)
function downloadAllFiles(files, to) {
let prms = Promise.resolve();
files.forEach(function (file) {
prms = prms.then(() => downloadWithProgress(folderUrl + file.path, path.join(to, file.path)));
prms = prms.then(() => downloadWithProgress(folderUrl + file.path, path.join(to, file.path), file.md5));
});
return prms;
}
Expand All @@ -51,4 +51,4 @@ function mkdirpromise(destination) {
resolve();
});
});
}
}
21 changes: 15 additions & 6 deletions src/helper/downloadWithProgress.js
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Expand Up @@ -3,12 +3,13 @@ const url = require('url'),
mkdirp = require('mkdirp'),
path = require('path'),
http = require('http');
md5sum = require('./md5');

module.exports = function mkdirAndDownload(fileUrl, destination) {
return mkdirpromise(path.dirname(destination)).then(() => download(fileUrl, destination));
module.exports = function mkdirAndDownload(fileUrl, destination, md5correct) {
return mkdirpromise(path.dirname(destination)).then(() => download(fileUrl, destination, md5correct));
};

function download(fileUrl, destination) {
function download(fileUrl, destination, md5correct) {
return new Promise((resolve, reject) => {

const p = url.parse(fileUrl);
Expand All @@ -20,19 +21,27 @@ function download(fileUrl, destination) {
console.log('Starting to download ' + destination + ', with a total of ' + len + ' bytes');
let downloaded = 0;
let downloadedPerc = '0.0';

md5 = new md5sum.ArrayBuffer();
res.on('data', function (chunk) {
file.write(chunk);
downloaded += chunk.length;
let newDlPerc = '' + (100.0 * downloaded / len).toFixed(1);

md5.append(chunk);
if (newDlPerc !== downloadedPerc) {
process.stdout.write(destination + ": " + newDlPerc + "%\n");
}
downloadedPerc = newDlPerc;
}).on('end', function () {
file.end();
md5val = md5.end()
console.log('md5 = '+md5val);
console.log('md5 correct = '+md5correct);
console.log('downloaded to: ' + destination);
if (md5val !== md5correct) {
console.log('Error! MD5 does not match.');
console.log(md5val);
console.log(md5correct);
}
resolve(destination);
}).on('error', function (err) {
reject(err);
Expand All @@ -51,4 +60,4 @@ function mkdirpromise(destination) {
resolve();
});
});
}
}
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