Unicode C++

Docusign Refresh OAuth2 Access Token

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Demonstrates how to refresh a Docusign OAuth2 access token. The refresh does not require user interaction via a web browser. If an access token expires (typically with a 401 response code), a new access token can be automatically obtained by using the code in this example. Unicode C++

#include <CkJsonObjectW.h>
#include <CkOAuth2W.h>
#include <CkStringBuilderW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get Docusign OAuth2 Access Token

    CkJsonObjectW jsonToken;
    success = jsonToken.LoadFile(L"qa_data/tokens/docusign.json");
    if (success != true) {
        wprintf(L"Failed to load docusign.json\n");
        return;
    }

    // The access token JSON looks like this:

    // {
    //   "access_token": "eyJ0eXA....YQyig",
    //   "token_type": "Bearer",
    //   "refresh_token": "eyJ0eXA....auE3eHKg",
    //   "expires_in": 28800
    // }

    CkOAuth2W oauth2;

    // For the developer sandbox environment, the token endpoint is https://account-d.docusign.com/oauth/token
    // For the production platform, the token endpoint is https://account.docusign.com/oauth/token
    oauth2.put_TokenEndpoint(L"https://account-d.docusign.com/oauth/token");

    // Replace these with actual values.
    // The client ID is also known as the "integration key" in Docusign.
    oauth2.put_ClientId(L"MY_DOCUSIGN_CLIENT_ID");
    // This is your secret key for the authorization code grant.
    oauth2.put_ClientSecret(L"MY_DOCUSIGN_CLIENT_SECRET");

    // Get the "refresh_token"
    oauth2.put_RefreshToken(jsonToken.stringOf(L"refresh_token"));

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success != true) {
        wprintf(L"%s\n",oauth2.lastErrorText());
        return;
    }

    wprintf(L"New access token: %s\n",oauth2.accessToken());
    wprintf(L"New refresh token: %s\n",oauth2.refreshToken());

    // Update the JSON with the new tokens.
    jsonToken.UpdateString(L"access_token",oauth2.accessToken());
    jsonToken.UpdateString(L"refresh_token",oauth2.refreshToken());

    // Save the new JSON access token response to a file.
    CkStringBuilderW sbJson;
    jsonToken.put_EmitCompact(false);
    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile(L"qa_data/tokens/docusign.json",L"utf-8",false);

    wprintf(L"OAuth2 authorization granted!\n");
    wprintf(L"New Access Token = %s\n",oauth2.accessToken());
    }