How to login to Google drive via libcurl using REST

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Hi All,

I want to connect to google drive to display/download/upload files using username and password through c++ project. I was trying to use curl library to achieve this, but i was not successful in doing this.

Could anyone help/guide me in achieving this?
The main issue is to login to user google drive with username and password.
I think once i am able to do this i can move forward.

Earlier there was a Library named GDrive to do this type of stuff, but now it has been deprecated.

Advance Thanks.
RCJ

What I have tried:

I want to connect to google drive to display/download/upload files using username and password through c++ project. I was trying to use curl library to achieve this, but i was not successful in doing this.

Posted 5-Jan-20 21:19pm

Member 10042484

Updated 27-Mar-20 14:07pm

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Mohibur Rashid 6-Jan-20 3:24am

https://tanaikech.github.io/2017/02/08/file-upload-and-download-with-file-convert-for-curl-using-drive-api/

try google

Member 10042484 6-Jan-20 4:55am

The link has only curl commands

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Michael Haephrati · Answer 1 · 2020-03-27T14:08:00

You should check 2 plages:
1. Google Drive API[^]
2. Libcurl API[^]

You can also learn the basics of communicating with this (and other) API's using REST, so you can choose other wrapper libraries or write your own.

Many things has changed since my article was written[^] , but the principle is the same. You use Google's API to log in.

You first connect to the server:

BOOL Connect(LPCTSTR szServerName, INTERNET_PORT nServerPort = INTERNET_DEFAULT_HTTP_PORT);

You "Connect" function should be something like:

BOOL CSmartHTTP::Connect(LPCTSTR serverName, INTERNET_PORT serverPort)
{
  Disconnect();
  if (Initialize())
  {
    m_hConnection = InternetConnect(m_hInet, serverName, serverPort, 
      NULL, NULL, INTERNET_SERVICE_HTTP, 0, (DWORD_PTR) this);
  }
  return (CheckResult(m_hConnection != NULL));
}

Then, without writing the entire code for you, you send request and check the response.

if (SendRequest(res, rs.GetHandle(), header, content, contentLength))
{
  len = sizeof(httpStatus);
  if (!CheckResult(HttpQueryInfo(rs.GetHandle(), HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER,
    &httpStatus, &len, NULL)))
  {
    res = RES_EWININET;
  }
  else
  {
    result = ReadReplyEx(res, httpStatus, readCallback, userParam, rs.GetHandle());
  }