Write binary data to file

Question

I have an installation script. This script opens a website and allows to input values and also upload a certificate for HTTPS.

But the result is not like the input file. Here is my code that parses the multipart body

var parseForm = function (data) {
    var reg = /-----------------------------.{12}(\r\n|\r|\n)Content-Disposition: form-data; name="/
    var sections = data.split(reg)
    var result = {}
    for (sec in sections) {
        var values = sections[sec].split(/\b"(\r\n|\r|\n)(\r\n|\r|\n)/)
        if (/certificate"; filename/.test(values[0])) {
            var key = values[0].replace(/"; filename=".*/i, '')
            var value = values[3].replace(/Content-Type: application\/x-pkcs12(\r\n|\n|\r)+/i, '').replace(/-----------------------------.{12}--(\r\n|\r|\n)/, '')
            result[key] = value
        } else if (values[3]) {
            var key = values[0]
            var value = values[3].replace(/(\r\n|\r|\n)/, '')
            result[key] = value
        }
    }
    return result
}

And this is what I use to save the file:

fs.writeFile(path.join(__dirname, 'server.p12'), parameter[p], function (err) {
    console.error(err)
    console.error('please copy the file to "' + __dirname + '" and name it server.p12')
})

Any idea, why it outputs the data wrong? Or even better, how I can fix it? :)

EDIT

Maybe the problem is, that the file isn't uploaded proberly. Is that maybe possible?

EDIT 2

The Buffer was just a left over of a test for Notepad++ to check the binary data :)

EDIT 3

Here is the originial certificate:

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

And here is the multipart body:

-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="COUCHDBSERVERHOST"

asd
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="COUCHDBSERVERPORT"

asd
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="COUCHDBSERVERUSERNAME"

asd
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="COUCHDBSERVERPASSWORD"

asd
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="PORT"

1234
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="DEFAULTDOMAIN"

asd
-----------------------------7de17e2d670f22
Content-Disposition: form-data; name="certificate"; filename="D:\serpentes\localhost.p12"
Content-Type: application/x-pkcs12

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
-----------------------------7de17e2d670f22--

The certificates are both bas64 encoded. I hope it helps. It is something with the encoding, when I do a base64 encoding and write it directly in a file it works. But I need to split it by hand. The whole code is here

Have you explored using existing form-data parsers like formidable or busboy? — loganfsmyth
– loganfsmyth, Commented Nov 26, 2014 at 23:37
I first thought about using express for that approach, but there comes my problem, I want it to only use default components. No external libary. Just, so it works doesn't matter what is in the package.json... But I think there is no other option that using a library. — Knerd
– Knerd, Commented Nov 26, 2014 at 23:44
please provide some sample data records so we can check it in depth — ymz
– ymz, Commented Nov 27, 2014 at 0:00
@ymz would you need the whole multipart body? The certificate I gonna provide base64 encoded. — Knerd
– Knerd, Commented Nov 27, 2014 at 6:38
lets make our tests here: jsfiddle.net/ymzrocks/u1tkhg9d.. i performed some changes to fit fiddle and mark some console.log as comments.. — ymz
– ymz, Commented Nov 27, 2014 at 10:22

Community · Accepted Answer · 2017-05-23 12:09:36Z

1

if your code works well on encoded string but makingtrouble in a binary format, it is mainly because of new lines signing. in short: there are couple of formats to break lines.

this topic covered here: Regular Expression to match every new line character (\n) inside a <content> tag

however, you can re-format your file by replacing those 'hidden characters' with something elese that suits you

this sample make use of notepad++ https://superuser.com/questions/542719/how-to-find-and-replace-new-line-in-notepad

enter image description here

edited May 23, 2017 at 12:09

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answered Nov 27, 2014 at 11:52

ymz

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2 Comments

Knerd Over a year ago

Good point, but there another problem comes a cross, I have no idea which line endings are correct... Is there a away in node to just write binary data do a file?

ymz Over a year ago

yep there is.. with a code sample: stackoverflow.com/questions/10384340/new-line-in-node-js

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

For the record, this doesn't answer the question, it is just a workaround

I have solved the problem. Because it is an installation script, it is clear, that you are on the machine, where you install the stuff.
So I ask the user to just copy the certificate. The other form data are transfered with x-url-form-encoded

edited Jun 20, 2020 at 9:12

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answered Nov 27, 2014 at 14:07

Knerd

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Write binary data to file

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