POST Request problems with IDrive EVS REST APIs

[PaceyIV]

I'm trying to use IDrive EVS REST APIs to upload a file with this service witout success.

This is the upload api (http://evs.idrive.com/web-file-upload-api.htm)
Upload local file(s) to your IDrive account
API Call: https://<server address>/evs/uploadFile
Method POST
Parameters uid=USERNAME&pwd=PASSWORD&pvtkey=OPTIONAL_PRIVATE_ KEY&p=DESTPATH&myfiles=FILENAME
enctype multipart/form-data

I try this piece of code but doesn't work. IDrive says "REQUEST 'ENCTYPE' IS NOT MULTIPART FORM DATA"

QFile *file = new QFile(sourcePath);
    file->open(QIODevice::ReadOnly);
 
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
    QHttpPart userNamePart;
    userNamePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"uid\""));
    userNamePart.setBody(this->_userName.toUtf8());
    QHttpPart passwordPart;
    passwordPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"pwd\""));
    passwordPart.setBody(this->_password.toUtf8());
    QHttpPart destPart;
    destPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"p\""));
    destPart.setBody(destPath.toUtf8());
 
     QHttpPart imagePart;
     imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/jpeg"));
     imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"image\"; filename=\"" + file->fileName().toUtf8()+"\"\r\n\r\n\r\n"));
     imagePart.setBodyDevice(file);
     file->setParent(multiPart); // we cannot delete the file now, so delete it with the multiPart
 
     multiPart->append(userNamePart);
     multiPart->append(passwordPart);
     multiPart->append(destPart);
     multiPart->append(imagePart);
 
    QNetworkRequest req;
    req.setUrl(QUrl(QString("https://%0/evs/uploadFile").arg(this->_serverAddress)));
 
    if (this->syncPost(req, multiPart)) {
        return (this->_reply.result()["message"] == "SUCCESS");
    }
    return false;
 
//    req.setHeader(QNetworkRequest::ContentTypeHeader, "multipart/form-data;  charset=UTF-8;  boundary=" + boundary);
//    QFile file(sourcePath);
//    file.open(QIODevice::ReadOnly);
//    QByteArray postData(QString("uid=%0&pwd=%1&p=%3&myfiles=%4")
//                        .arg(this->_userName)
//                        .arg(this->_password)
//                        .arg(destPath)
//                        .arg(file.fileName()).toUtf8());
//    postData.append("--" + boundary + "\r\n");
//    postData.append("Content-Type: image/jpeg\r\n\r\n");
//    postData.append(file.readAll());
//    file.close(); // the file is opened earlier in the code
//    postData.append("\r\n");
//    postData.append("--" + boundary + "\r\n");
//    int contentLength = postData.length();
//    req.setHeader(QNetworkRequest::ContentLengthHeader, contentLength);
 
}

QFile *file = new QFile(sourcePath);
    file->open(QIODevice::ReadOnly);

    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
    QHttpPart userNamePart;
    userNamePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"uid\""));
    userNamePart.setBody(this->_userName.toUtf8());
    QHttpPart passwordPart;
    passwordPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"pwd\""));
    passwordPart.setBody(this->_password.toUtf8());
    QHttpPart destPart;
    destPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"p\""));
    destPart.setBody(destPath.toUtf8());

     QHttpPart imagePart;
     imagePart.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("image/jpeg"));
     imagePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"image\"; filename=\"" + file->fileName().toUtf8()+"\"\r\n\r\n\r\n"));
     imagePart.setBodyDevice(file);
     file->setParent(multiPart); // we cannot delete the file now, so delete it with the multiPart

     multiPart->append(userNamePart);
     multiPart->append(passwordPart);
     multiPart->append(destPart);
     multiPart->append(imagePart);

    QNetworkRequest req;
    req.setUrl(QUrl(QString("https://%0/evs/uploadFile").arg(this->_serverAddress)));

    if (this->syncPost(req, multiPart)) {
        return (this->_reply.result()["message"] == "SUCCESS");
    }
    return false;

//    req.setHeader(QNetworkRequest::ContentTypeHeader, "multipart/form-data;  charset=UTF-8;  boundary=" + boundary);
//    QFile file(sourcePath);
//    file.open(QIODevice::ReadOnly);
//    QByteArray postData(QString("uid=%0&pwd=%1&p=%3&myfiles=%4")
//                        .arg(this->_userName)
//                        .arg(this->_password)
//                        .arg(destPath)
//                        .arg(file.fileName()).toUtf8());
//    postData.append("--" + boundary + "\r\n");
//    postData.append("Content-Type: image/jpeg\r\n\r\n");
//    postData.append(file.readAll());
//    file.close(); // the file is opened earlier in the code
//    postData.append("\r\n");
//    postData.append("--" + boundary + "\r\n");
//    int contentLength = postData.length();
//    req.setHeader(QNetworkRequest::ContentLengthHeader, contentLength);

}

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I also try with the commented code but I got the same error!

How should I do?

Albano

[wysota]

Check if the data is properly formatted before sending it.

[PaceyIV]

How can I see the raw data that I send?
I can't capture tcp packets with Wiresharsk becouse I have to use a https connection.

[wysota]

You don't have to send that data to this particular server, you know... you just need to see the outgoing request.

[PaceyIV]

I've sent the request to a my php page that should print all the post request but I can't understand the problem.

I can upload file with this piece of code

QFile fileUp("FILE PATH");
    fileUp.open(QIODevice::ReadOnly);
    QByteArray file(fileUp.readAll());
    fileUp.close();
 
    QByteArray boundary("AaB03x");
 
    QNetworkRequest req(QUrl("https://evsweb39.idrive.com/evs/uploadFile"));
    req.setRawHeader("Content-Type", QByteArray("multipart/form-data; charset=UTF-8; boundary=") + boundary);
 
    QByteArray postData;
    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"uid\"\r\n\r\n";
    postData += userName + "\r\n";
 
    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"pwd\"\r\n\r\n";
    postData += passWord + "\r\n";
 
    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"p\"\r\n\r\n";
    postData += remotePath + "\r\n";
 
    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; filename=\"" + fileName + "\";\r\nContent-Type: application/octet-stream\r\n\r\n";
    postData += file;
    postData += "\r\n";
 
    postData += "--" + boundary + "--\r\n";
 
    req.setHeader(QNetworkRequest::ContentLengthHeader, QString::number(postData.length()));

QFile fileUp("FILE PATH");
    fileUp.open(QIODevice::ReadOnly);
    QByteArray file(fileUp.readAll());
    fileUp.close();

    QByteArray boundary("AaB03x");

    QNetworkRequest req(QUrl("https://evsweb39.idrive.com/evs/uploadFile"));
    req.setRawHeader("Content-Type", QByteArray("multipart/form-data; charset=UTF-8; boundary=") + boundary);

    QByteArray postData;
    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"uid\"\r\n\r\n";
    postData += userName + "\r\n";

    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"pwd\"\r\n\r\n";
    postData += passWord + "\r\n";

    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; name=\"p\"\r\n\r\n";
    postData += remotePath + "\r\n";

    postData += "--" + boundary + "\r\n";
    postData += "Content-Disposition: form-data; filename=\"" + fileName + "\";\r\nContent-Type: application/octet-stream\r\n\r\n";
    postData += file;
    postData += "\r\n";

    postData += "--" + boundary + "--\r\n";

    req.setHeader(QNetworkRequest::ContentLengthHeader, QString::number(postData.length()));

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How can I do it using QHttpMultiPart?

[wysota]

Did you test the output you get using QHttpMultiPart?

[PaceyIV]

What I see with my custom php page is the same but I'm not sure. I've got some problems retrieving the raw post request by php.

[wysota]

Use netcat instead of the php servlet.

[PaceyIV]

Great! With netcat I can see the difference!

QHttpMultiPart add this header: MIME-Version: 1.0
Is this important? Why if I don't add this header I can upload this file. In the examples of RFC1867 they don't add the MIME version (http://www.faqs.org/rfcs/rfc1867.html). Why Qt does it?

[wysota]

QHttpMultiPart add this header: MIME-Version: 1.0
Is this important?

Apparently so.

Why Qt does it?

It's a standard header so I don't see why it would cause your message to fail. I would rather assume there is some other difference you are missing.

[PaceyIV]

You're right!
I add the MIME version header with my working code and it continues to work, so I found the real difference! QHttpMultipart doesn't add "\r\n" to the end of the request. If I don't do this the server rejects the request!

What I can do?