Node.js

Dropbox Refresh OAuth2 Access Token

See more Dropbox Examples

Demonstrates how to mint a new access token using the refresh token obtained when originally getting the OAuth2 access token. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    var http = new chilkat.Http();

    //  Implements the following CURL command:

    //  curl -X GET https://api.dropbox.com/oauth2/token \
    //      -d grant_type=refresh_token \
    //      -d refresh_token=<YOUR_REFRESH_TOKEN> \
    //      -u <YOUR_APP_KEY>:<YOUR_APP_SECRET>

    //  Use the following online tool to generate HTTP code from a CURL command
    //  Convert a cURL Command to HTTP Source Code

    http.Login = "DROPBOX_APP_KEY";
    http.Password = "DROPBOX_APP_SECRET";

    //  Get the refresh token from the JSON we saved when originally getting the access token.
    //  (See Get Dropbox OAuth2 Access Token w/ Refresh Token
    var json = new chilkat.JsonObject();
    success = json.LoadFile("qa_data/tokens/dropbox.json");
    if (success == false) {
        console.log(json.LastErrorText);
        return;
    }

    var req = new chilkat.HttpRequest();
    req.AddParam("grant_type","refresh_token");
    req.AddParam("refresh_token",json.StringOf("refresh_token"));

    req.HttpVerb = "POST";
    req.ContentType = "application/x-www-form-urlencoded";

    var resp = new chilkat.HttpResponse();
    success = http.HttpReq("https://api.dropbox.com/oauth2/token",req,resp);
    if (success == false) {
        console.log(http.LastErrorText);
        return;
    }

    var sbResponseBody = new chilkat.StringBuilder();
    resp.GetBodySb(sbResponseBody);

    var jResp = new chilkat.JsonObject();
    jResp.LoadSb(sbResponseBody);
    jResp.EmitCompact = false;

    console.log("Response Body:");
    console.log(jResp.Emit());

    var respStatusCode = resp.StatusCode;
    console.log("Response Status Code = " + respStatusCode);
    if (respStatusCode >= 400) {
        console.log("Response Header:");
        console.log(resp.Header);
        console.log("Failed.");
        return;
    }

    //  Sample JSON response:
    //  (Sample code for parsing the JSON response is shown below)

    //  {
    //    "access_token": "sl.AC75WPYRqOi0mxcRqlimbV9FKHu04biz5qHwatG3MTgzFK7kLrGVlM9EgP4603tE7bWw0s1rMbTKiHsf37TUshPYvq-3r0qeBr_PrZIAibN8XOQicvboiOnqx6JrDekq-w8D-tE",
    //    "token_type": "bearer",
    //    "expires_in": 14400
    //  }

    var access_token = jResp.StringOf("access_token");
    console.log("New Access Token: " + access_token);

    //  Perhaps update our Dropbox JSON file with the new access token.
    //  (The existing refresh token does not change, and can be used over and over to mint new access tokens.)
    json.UpdateString("access_token",access_token);

    json.WriteFile("qa_data/tokens/dropbox.json");

}

chilkatExample();