Unicode C Requires Chilkat v11.5.0+

Box: Refresh and Save Rotated OAuth Tokens

See more Box Examples

Refresh the user token saved by the authorization example. Box refresh tokens are single-use and expire after 60 days. Serialize refreshes for a token pair and save the replacement immediately; do not run concurrent refresh jobs.

See the Box API guide for setup and the complete workflow.

Unicode C

#include <C_CkJsonObjectW.h>
#include <C_CkOAuth2W.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObjectW tokens;
    HCkOAuth2W oauth2;

    success = FALSE;

    //  Requires Chilkat 11.5.0 or later and a previously unlocked Chilkat bundle.
    //  See Global Unlock Sample.
    //  Guide: Box API Guide.

    success = FALSE;

    tokens = CkJsonObjectW_Create();
    success = CkJsonObjectW_LoadFile(tokens,L"qa_data/tokens/box_oauth.json");
    if (success != TRUE) {
        wprintf(L"%s\n",CkJsonObjectW_lastErrorText(tokens));
        CkJsonObjectW_Dispose(tokens);
        return;
    }

    oauth2 = CkOAuth2W_Create();
    CkOAuth2W_putTokenEndpoint(oauth2,L"https://api.box.com/oauth2/token");
    CkOAuth2W_putClientId(oauth2,L"BOX_CLIENT_ID");
    CkOAuth2W_putClientSecret(oauth2,L"BOX_CLIENT_SECRET");
    CkOAuth2W_putRefreshToken(oauth2,CkJsonObjectW_stringOf(tokens,L"refresh_token"));
    success = CkOAuth2W_RefreshAccessToken(oauth2);
    if (success != TRUE) {
        wprintf(L"%s\n",CkOAuth2W_lastErrorText(oauth2));
        CkJsonObjectW_Dispose(tokens);
        CkOAuth2W_Dispose(oauth2);
        return;
    }

    success = CkJsonObjectW_Load(tokens,CkOAuth2W_accessTokenResponse(oauth2));
    if (success != TRUE) {
        wprintf(L"%s\n",CkJsonObjectW_lastErrorText(tokens));
        CkJsonObjectW_Dispose(tokens);
        CkOAuth2W_Dispose(oauth2);
        return;
    }

    //  The previous refresh token is now invalid. Preserve this response even if
    //  your normal token-store write fails. Do not retry with the old refresh token.
    success = CkJsonObjectW_WriteFile(tokens,L"qa_data/tokens/box_oauth.json");
    if (success != TRUE) {
        wprintf(L"%s\n",CkJsonObjectW_lastErrorText(tokens));
        CkJsonObjectW_Dispose(tokens);
        CkOAuth2W_Dispose(oauth2);
        return;
    }

    wprintf(L"New access and refresh tokens saved. Do not log their values.\n");


    CkJsonObjectW_Dispose(tokens);
    CkOAuth2W_Dispose(oauth2);

    }