api - Creta Signature for Oauth 1.0 with Curl and Php - Fixing error "Unsupported signature method in the header. Require HMAC-SHA256" ← (PHP, HTML)
What is wrong?
This is all my code, I think that it should be fine, but I don't know why... with postman I haven't errors and I receive the tokens while with Curl I receive this error. I'm working in local with Mamp pro.
The error received is:
My Code To generete the Signature and get the Token:
$url = "https://account.api.here.com/oauth2/token";
$data = array(
"grant_type" => "client_credentials"
);
$oauthNonce = mt_rand();
$oauthTimestamp = time();
$oauthCustomereKey = "******";
$oauthSignatureMethod = "HMAC-SHA256";
$httpMethod = "POST";
$oauthVersion = "1.0";
$keySecret = "*****";
$baseString = $httpMethod."&". urlencode($url);
$paramString =
"grant_type=client_credentials&".
"oauth_consumer_key=". urlencode($oauthCustomereKey).
"&oauth_nonce=". urlencode($oauthNonce).
"&oauth_signature_method=". urlencode($oauthSignatureMethod).
"&oauth_timestamp=". urlencode($oauthTimestamp).
"&oauth_version=". urlencode($oauthVersion)
;
$baseString = $baseString . "&" . urlencode($paramString);
var_dump($baseString);
$signingKey= urlencode($keySecret) . "&";
$signature = urlencode(
base64_encode(
hash_hmac(
'sha256',
$baseString,
$signingKey,
true
)
)
);
$params = [
"oauth_consumer_key" => $oauthCustomereKey,
"oauth_nonce" => $oauthNonce,
"oauth_signature_method" => $oauthSignatureMethod,
"oauth_timestamp" => $oauthTimestamp,
"oauth_version" => $oauthVersion,
"oauth_signature" => $signature
];
// $lol = 'oauth_consumer_key="' . $oauthCustomereKey . '",oauth_signature_method="'.$oauthSignatureMethod . '",oauth_timestamp="'.$oauthTimestamp.'",oauth_nonce="'.$oauthNonce.'",oauth_version="'.$oauthVersion.'",oauth_signature="'.$signature.'"';
/* This will give you the proper encoded string to include in your Authorization header */
$params = http_build_query($params, null, ',', PHP_QUERY_RFC3986);
$authorization = "Authorization: OAuth " . $params;
var_dump($authorization);
if(!$curl = curl_init()){
exit;
}
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
"Content-Type : application/x-www-form-urlencoded",
$authorization));
$token = curl_exec($curl);
curl_close($curl);
return $token;
- Result basestring (dump on line 87):
string(253) "POST&https%3A%2F%2Faccount.api.here.com%2Foauth2%2Ftoken&grant_type%3Dclient_credentials%26oauth_consumer_key%3D********%26oauth_nonce%3D1468397107%26oauth_signature_method%3DHMAC-SHA256%26oauth_timestamp%3D1605523226%26oauth_version%3D1.0"
And on the doc here we have this example... it look the same:
POST
&https%3A%2F%2Faccount.api.here.com%2Foauth2%2Ftoken
&grant_type=client_credentials%26oauth_consumer_key%3Daccess-key-id-1234%26oauth_nonce%3DLIIpk4%26
oauth_signature_method%3DHMAC-SHA256%26oauth_timestamp%3D1456945283%26oauth_version%3D1.0
Answer
Solution:
FIXED
Finally... after 2 days... There are 2 errors on the code above:
- The parameter $data to CURLOPT_POSTFIELDS
- Oauth 1.0 wants the double quotes.
So change:
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
With
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
This is strange for me, because with curl I use http_build_query with GET request and not POST, where we can use $data directly like array.
And delete:
$params = http_build_query($params, null, ',', PHP_QUERY_RFC3986);
And write the query with your beautifuls hand because $params doesn't have double quote.