MEAN js download file from system path - angularjs

Question

I want to implement feature in MEANJS project to download mp3 files from system path
Example: /usr/local/setup/file.mp3
I want to apply security checks for valid user and allow user to download mp3 files.
Is there any other way which can be used to download files with security?

Answer 1

We can use below node js function
var path = require('path');
var fs = require('fs');
app.get('/api/download-music', function(req, res){
var filename = "file.mp3";
var filePath = path.join("/usr/local/setup/", filename);
var stat = fs.statSync(filePath);
res.writeHead(200, {
'Content-Type': 'audio/mp3',
'Content-Length': stat.size,
"content-disposition":"attachment; filename="+filename
});
var readStream = fs.createReadStream(filePath);
readStream.on('data', function(data) {
var flushed = res.write(data);
// Pause the read stream when the write stream gets saturated
if(!flushed)
readStream.pause();
});
res.on('drain', function() {
// Resume the read stream when the write stream gets hungry
readStream.resume();
});
readStream.on('end', function() {
readStream
.pipe(res);
});
});
}
in above node js code we can apply security checks with session id.
on angular template we can use below html:
Download