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Upload to Dropbox with Curl and refresh token
Hi, I'm trying to upload files from my website to dropbox and it was working, but i received an error message saying the Access Token Expired. I research a little bit, and read that now dropbox uses ...
Hi Fenoma,
As a example you can take a look here. It's not a PHP code, but a command line curl execution. I believe you haven't problem to convert it. The most important is HOW it's gonna work (as idea).
The code you posted as example should not be changed a lot (it can left almost the same). You have not to assume 'ACCESS TOKEN' has a fixed value anymore (as seems you are doing). This token should be represented as rather variable and definitely not as a literal!!! Good idea is to change your code in a way, every place (no limited to your example) where token is used, the literal to be replaced with a function (you can name it to something like 'getToken' for instance). In this function implementation you can check whether available access token is going to expire and if so, refresh it (as denoted in the post linked to). You can keep refresh token, last received access token (as a cache), and calculated time (moment) of current access token expiration (used for check, in followup calls, whether the access token expires). 😉 That's it.
Hope this helps.
Hi Fenoma,
As a example you can take a look here. It's not a PHP code, but a command line curl execution. I believe you haven't problem to convert it. The most important is HOW it's gonna work (as idea).
The code you posted as example should not be changed a lot (it can left almost the same). You have not to assume 'ACCESS TOKEN' has a fixed value anymore (as seems you are doing). This token should be represented as rather variable and definitely not as a literal!!! Good idea is to change your code in a way, every place (no limited to your example) where token is used, the literal to be replaced with a function (you can name it to something like 'getToken' for instance). In this function implementation you can check whether available access token is going to expire and if so, refresh it (as denoted in the post linked to). You can keep refresh token, last received access token (as a cache), and calculated time (moment) of current access token expiration (used for check, in followup calls, whether the access token expires). 😉 That's it.
Hope this helps.
Hi Здравко, thank you so much for your reply. I think i'm still committing some mistakes. What I did was this:
1.- went to the link with all the data that the example says:
https://www.dropbox.com/oauth2/authorize?token_access_type=offline&response_type=code&client_id=<App key>Then I got the access code on the browser and I copy it to the next step:
2.- I created a function in order to get the token:
public function getToken(){
$postfields = array(
'code' => '<ACCESS_CODE>',
'grant_type' => 'authorization_code',
);
$auth = "<APP_KEY:APP_SECRET>";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($postfields));
curl_setopt($curl, CURLOPT_USERPWD, $auth);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$json_response = curl_exec($curl);
$responseObj = json_decode($json_response);
return $responseObj->access_token;
}
That function gave me an object with the information
{"access_token": <TOKEN>, "token_type": "bearer", "expires_in":14400, "refresh_token":<REFRESH_TOKEN>, etc}.
3.- Now that I have the token, I change the code that I post in the first place with the access_token.
public function UpFileToDropbox($path){
$fp = fopen($path, 'rb');
$size = filesize($path);
$cheaders = array('Authorization: Bearer ' . $this->getToken(),
'Content-Type: application/octet-stream',
'Dropbox-API-Arg: {"path":"/test/'.$path.'", "mode":"add"}');
curl_setopt($ch, CURLOPT_HTTPHEADER, $cheaders);
curl_setopt($ch, CURLOPT_PUT, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($ch, CURLOPT_INFILE, $fp);
curl_setopt($ch, CURLOPT_INFILESIZE, $size);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
echo $response;
curl_close($ch);
fclose($fp);
}
It was working for a while, but then I try again and said that the code expired, and then when I try to create a new one (for testing) doing the whole same process, now says "Code Has already been used".
4.- So I assumed that if says the code has been used, mean still valid, so i Tried with the refresh code, but doesn't work:
public function RefreshToken(){
$postfields = array(
'refresh_token' => '<REFRESH_TOKEN>',
'grant_type' => 'refresh_token',
);
$auth = ""<APP_KEY:APP_SECRET>";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($postfields));
curl_setopt($curl, CURLOPT_USERPWD, $auth);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$json_response = curl_exec($curl);
$responseObj = json_decode($json_response);
return $responseObj;
}
So I don't understand what am I doing wrong? Thanks!
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