Magento REST API Error 500

Question

I am trying to get product information through Magento REST API; but results an error starting “ [message:protected] => Invalid auth/bad request (got a 500, expected HTTP/1.1 20X or a redirect) …....................” No idea why this occurs; can anybody please help me on this ? My code follows:

$callbackUrl = "http://myhostcom/current_script.php";
$temporaryCredentialsRequestUrl = "http://myhostcom/oauth/initiate?oauth_callback=" .               urlencode($callbackUrl);
$adminAuthorizationUrl = 'http://myhostcom/oauth/authorize';
$accessTokenRequestUrl = 'http://myhostcom/oauth/token';
$apiUrl = 'http://myhostcom/api/rest';
$consumerKey = 'xxxxxx';
$consumerSecret = 'xxxxxxxxxxx';
echo '<pre/>';
session_start();
if (!isset($_GET['oauth_token']) && isset($_SESSION['state']) && $_SESSION['state'] == 1) {
    $_SESSION['state'] = 0;
}
try {
    $authType = ($_SESSION['state'] == 2) ? OAUTH_AUTH_TYPE_AUTHORIZATION : OAUTH_AUTH_TYPE_URI;
    $oauthClient = new OAuth($consumerKey, $consumerSecret, OAUTH_SIG_METHOD_HMACSHA1, $authType);
    $oauthClient->enableDebug();
    $oauthClient->disableSSLChecks();


if (!isset($_GET['oauth_token']) && !$_SESSION['state']) { 
    $requestToken = $oauthClient->getRequestToken($temporaryCredentialsRequestUrl);
    $_SESSION['secret'] = $requestToken['oauth_token_secret'];
    $_SESSION['state'] = 1; 
    header('Location: ' . $adminAuthorizationUrl . '?oauth_token=' . $requestToken['oauth_token']);
    exit;
} else if ($_SESSION['state'] == 1) {      
    $oauthClient->setToken($_GET['oauth_token'], $_SESSION['secret']);
    $accessToken = $oauthClient->getAccessToken($accessTokenRequestUrl);
    $_SESSION['state'] = 2;
    $_SESSION['token'] = $accessToken['oauth_token'];
    $_SESSION['secret'] = $accessToken['oauth_token_secret'];
    header('Location: ' . $callbackUrl);
    exit;
} else { 
    $oauthClient->setToken($_SESSION['token'], $_SESSION['secret']);
    $resourceUrl = $apiUrl."/products/465"; 
    $oauthClient->fetch($resourceUrl);
    $productsList = json_decode($oauthClient->getLastResponse());
    print_r($productsList);
}
} catch (OAuthException $e) {
    print_r($e);
}

Thanks.

Answer 1

try below code its working

$callbackUrl = "http://myhostcom/current_script.php";
$temporaryCredentialsRequestUrl = "http://myhostcom/oauth/initiate?oauth_callback=" .               urlencode($callbackUrl);
$adminAuthorizationUrl = 'http://myhostcom/oauth/authorize';
$accessTokenRequestUrl = 'http://myhostcom/oauth/token';
$apiUrl = 'http://myhostcom/api/rest';
$consumerKey = 'xxxxxx';
$consumerSecret = 'xxxxxxxxxxx';
echo '<pre/>';
session_start();
if (!isset($_GET['oauth_token']) && isset($_SESSION['state']) && $_SESSION['state'] == 1) {
    $_SESSION['state'] = 0;
}
try {
    $authType = ($_SESSION['state'] == 2) ? OAUTH_AUTH_TYPE_AUTHORIZATION : OAUTH_AUTH_TYPE_URI;
    $oauthClient = new OAuth($consumerKey, $consumerSecret, OAUTH_SIG_METHOD_HMACSHA1, $authType);
    $oauthClient->enableDebug();
    $oauthClient->disableSSLChecks();


if (!isset($_GET['oauth_token']) && !$_SESSION['state']) { 
    $requestToken = $oauthClient->getRequestToken($temporaryCredentialsRequestUrl);
    $_SESSION['secret'] = $requestToken['oauth_token_secret'];
    $_SESSION['state'] = 1; 
    header('Location: ' . $adminAuthorizationUrl . '?oauth_token=' . $requestToken['oauth_token']);
    exit;
} else if ($_SESSION['state'] == 1) {      
    $oauthClient->setToken($_GET['oauth_token'], $_SESSION['secret']);
    $accessToken = $oauthClient->getAccessToken($accessTokenRequestUrl);
    $_SESSION['state'] = 2;
    $_SESSION['token'] = $accessToken['oauth_token'];
    $_SESSION['secret'] = $accessToken['oauth_token_secret'];
    header('Location: ' . $callbackUrl);
    exit;
} else { 
    $oauthClient->setToken($_SESSION['token'], $_SESSION['secret']);
    $resourceUrl = $apiUrl."/products/465";
    $oauthClient->fetch($resourceUrl, array(), 'GET', array("Content-Type" => "application/json","Accept" => "*/*")); 
    //$oauthClient->fetch($resourceUrl);
    $productsList = json_decode($oauthClient->getLastResponse());
    print_r($productsList);
}
} catch (OAuthException $e) {
    print_r($e);
}

hope its help you

Answer 2

$callbackUrl = "http://myhostcom/current_script.php";
$temporaryCredentialsRequestUrl = "http://myhostcom/oauth/initiate?oauth_callback=" .               urlencode($callbackUrl);
$adminAuthorizationUrl = 'http://myhostcom/oauth/authorize';
$accessTokenRequestUrl = 'http://myhostcom/oauth/token';
$apiUrl = 'http://myhostcom/api/rest';
$consumerKey = 'xxxxxx';
$consumerSecret = 'xxxxxxxxxxx';

session_start();
if (!isset($_GET['oauth_token']) && isset($_SESSION['state']) &&         $_SESSION['state'] == 1) {
$_SESSION['state'] = 0;
}
try {
$authType = ($_SESSION['state'] == 2) ? OAUTH_AUTH_TYPE_AUTHORIZATION  : OAUTH_AUTH_TYPE_URI;
$oauthClient = new OAuth($consumerKey, $consumerSecret,   OAUTH_SIG_METHOD_HMACSHA1, $authType);
$oauthClient->enableDebug();

if (!isset($_GET['oauth_token']) && !$_SESSION['state']) {
    $requestToken = $oauthClient->getRequestToken($temporaryCredentialsRequestUrl);
    $_SESSION['secret'] = $requestToken['oauth_token_secret'];
    $_SESSION['state'] = 1;
    header('Location: ' . $customerAuthorizationUrl . '?oauth_token=' . $requestToken['oauth_token']);
    exit;
} else if ($_SESSION['state'] == 1) {
    $oauthClient->setToken($_GET['oauth_token'], $_SESSION['secret']);
    $accessToken = $oauthClient->getAccessToken($accessTokenRequestUrl);
    $_SESSION['state'] = 2;
    $_SESSION['token'] = $accessToken['oauth_token'];
    $_SESSION['secret'] = $accessToken['oauth_token_secret'];
    header('Location: ' . $callbackUrl);
    exit;
} else {
    $oauthClient->setToken($_SESSION['token'], $_SESSION['secret']);

    $resourceUrl = "$apiUrl/products";
    $oauthClient->fetch($resourceUrl, array(), 'GET', array('Content-Type' => 'application/json', 'Accept' => '*/*'));
    $productsList = json_decode($oauthClient->getLastResponse());
    print_r($productsList);

    echo "<br/>".$_SESSION['secret']."<br/>";

    echo "<br/>".$_SESSION['token']."<br/>";
}
} catch (OAuthException $e) {
print_r($e->getMessage());
echo "<br/>";
print_r($e->lastResponse);
}

Answer 3

Specifically what did it was adding the accept header to the fetch line:

$oauthClient->fetch($resourceUrl, array(), 'GET', array('Content-Type' => 'application/json', 'Accept' => 'application/json'));