(Perl) 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.

For more information, see https://www.dropbox.com/developers/documentation/http/documentation

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$http = chilkat::CkHttp->new();

# 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->put_Login("DROPBOX_APP_KEY");
$http->put_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
$json = chilkat::CkJsonObject->new();
$success = $json->LoadFile("qa_data/tokens/dropbox.json");
if ($success == 0) {
    print $json->lastErrorText() . "\r\n";
    exit;
}

$req = chilkat::CkHttpRequest->new();
$req->AddParam("grant_type","refresh_token");
$req->AddParam("refresh_token",$json->stringOf("refresh_token"));

# resp is a HttpResponse
$resp = $http->PostUrlEncoded("https://api.dropbox.com/oauth2/token",$req);
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

$sbResponseBody = chilkat::CkStringBuilder->new();
$resp->GetBodySb($sbResponseBody);

$jResp = chilkat::CkJsonObject->new();
$jResp->LoadSb($sbResponseBody);
$jResp->put_EmitCompact(0);

print "Response Body:" . "\r\n";
print $jResp->emit() . "\r\n";

$respStatusCode = $resp->get_StatusCode();
print "Response Status Code = " . $respStatusCode . "\r\n";
if ($respStatusCode >= 400) {
    print "Response Header:" . "\r\n";
    print $resp->header() . "\r\n";
    print "Failed." . "\r\n";

    exit;
}

# 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
# }

$access_token = $jResp->stringOf("access_token");
print "New Access Token: " . $access_token . "\r\n";

# 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");