2

我首先使用下面的脚本来显示所有可用的打印机（然后我从这个脚本中获得了刷新令牌）：

<?php

require_once 'XXX/Google_Client.php';

session_start();



$client = new Google_Client();
$client->setApplicationName('XXX');
$client->setScopes("https://www.googleapis.com/auth/cloudprint");
$client->setAccessType('offline');

$client->setClientId('XXX');
$client->setClientSecret('XXX');
 $client->setRedirectUri('XXX');

if (isset($_GET['code'])) {

  $client->authenticate();
  $_SESSION['token'] = $client->getAccessToken();
  $redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
  header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}

if (isset($_SESSION['token'])) {
 $client->setAccessToken($_SESSION['token']);
}

if (isset($_REQUEST['logout'])) {
  unset($_SESSION['token']);
  $client->revokeToken();
}

if ($client->getAccessToken()) {

  $_SESSION['token'] = $client->getAccessToken();

 $tokens = json_decode($_SESSION['token'], true);
 $client->refreshToken($tokens['refresh_token']);
 $tokens = json_decode($client->getAccessToken(), true);



 searchPrinters($tokens['access_token']);

} else {
  $auth = $client->createAuthUrl();
}

if (isset($auth)) {
    print "<a class=login href='$auth'>Connect Me!</a>";
  } else {
    print "<a class=logout href='?logout'>Logout</a>";
}


function processRequest($url, $postFields, $referer,$access_token) {  
    $ret = "";
    $ch = curl_init(); 

    curl_setopt($ch, CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_USERAGENT, "");
    if(!is_null($postFields)) {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS,
             $postFields);
        // http_build_query() will properly escape the fields and
        //  build a query string.
    }

    if(strlen($_SESSION['token']) > 0) {
        $headers = array(
        "Authorization: OAuth " . $access_token,
        //"GData-Version: 3.0",
        "X-CloudPrint-Proxy", "XXX"
        );
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_REFERER, $referer);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);    
    //curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);



    $ret = curl_exec ($ch);

    curl_close ($ch); 

    return $ret;
}




function searchPrinters($access_token)
{
    $url = "https://www.google.com/cloudprint/search?output=json";

    $post = array(
    );

    $ret = processRequest($url, $post, "",$access_token);

    echo $ret;

}

?>

该脚本可以很好地手动登录，但不适用于 cronjob。

我在以下脚本中对刷新令牌进行了硬编码：

<?php


require_once 'XXX/Google_Client.php';


session_start();


$refresh_token = 'XXX';

$client = new Google_Client();
$client->setApplicationName('XXX');
$client->setScopes("https://www.googleapis.com/auth/cloudprint");
$client->setAccessType('offline');

$client->setClientId('XXX');
$client->setClientSecret('XXX');
$client->setRedirectUri('XXX');

$client->refreshToken($refresh_token);


$tokens = json_decode($client->getAccessToken(), true);


searchPrinters($tokens['access_token']);

function processRequest($url, $postFields, $referer,$access_token) {  
    $ret = "";
    $ch = curl_init(); 

    curl_setopt($ch, CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_USERAGENT, "");
    if(!is_null($postFields)) {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS,
             $postFields);
        // http_build_query() will properly escape the fields and
        //  build a query string.
    }

    if(strlen($_SESSION['token']) > 0) {
        $headers = array(
        "Authorization: OAuth " . $access_token,
        //"GData-Version: 3.0",
        "X-CloudPrint-Proxy", "XXX"
        );
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_REFERER, $referer);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);    
    //curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);



    $ret = curl_exec ($ch);

    curl_close ($ch); 

    return $ret;
}




function searchPrinters($access_token)
{
    $url = "https://www.google.com/cloudprint/search?output=json";

    $post = array(
    );

    $ret = processRequest($url, $post, "",$access_token);

    echo $ret;

}

?>

我认为一旦您获得了刷新令牌，您就可以随时使用它来重新生成访问令牌，您只需要这样做

$client->refreshToken($refresh_token);

$tokens = json_decode($client->getAccessToken(), true);

获得授权。然后可以在 cronjob 中使用它在设定的时间自动执行打印作业。但是现在我收到 403 错误...有人可以向我解释我做错了什么吗？

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0 回答 0