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<?php
namespace Dropbox;
/**
* Your app's API key and secret.
*/
final class AppInfo
{
/**
* Your Dropbox <em>app key</em> (OAuth calls this the <em>consumer key</em>). You can
* create an app key and secret on the <a href="http://dropbox.com/developers/apps">Dropbox developer website</a>.
*
* @return string
*/
function getKey() { return $this->key; }
/** @var string */
private $key;
/**
* Your Dropbox <em>app secret</em> (OAuth calls this the <em>consumer secret</em>). You can
* create an app key and secret on the <a href="http://dropbox.com/developers/apps">Dropbox developer website</a>.
*
* Make sure that this is kept a secret. Someone with your app secret can impesonate your
* application. People sometimes ask for help on the Dropbox API forums and
* copy/paste code that includes their app secret. Do not do that.
*
* @return string
*/
function getSecret() { return $this->secret; }
/** @var string */
private $secret;
/**
* The set of servers your app will use. This defaults to the standard Dropbox servers
* {@link Host::getDefault}.
*
* @return Host
*
* @internal
*/
function getHost() { return $this->host; }
/** @var Host */
private $host;
/**
* Constructor.
*
* @param string $key
* See {@link getKey()}
* @param string $secret
* See {@link getSecret()}
*/
function __construct($key, $secret)
{
self::checkKeyArg($key);
self::checkSecretArg($secret);
$this->key = $key;
$this->secret = $secret;
// The $host parameter is sort of internal. We don't include it in the param list because
// we don't want it to be included in the documentation. Use PHP arg list hacks to get at
// it.
$host = null;
if (\func_num_args() == 3) {
$host = \func_get_arg(2);
Host::checkArgOrNull("host", $host);
}
if ($host === null) {
$host = Host::getDefault();
}
$this->host = $host;
}
/**
* Loads a JSON file containing information about your app. At a minimum, the file must include
* the "key" and "secret" fields. Run 'php authorize.php' in the examples directory
* for details about what this file should look like.
*
* @param string $path
* Path to a JSON file
*
* @return AppInfo
*
* @throws AppInfoLoadException
*/
static function loadFromJsonFile($path)
{
list($rawJson, $appInfo) = self::loadFromJsonFileWithRaw($path);
return $appInfo;
}
/**
* Loads a JSON file containing information about your app. At a minimum, the file must include
* the "key" and "secret" fields. Run 'php authorize.php' in the examples directory
* for details about what this file should look like.
*
* @param string $path
* Path to a JSON file
*
* @return array
* A list of two items. The first is a PHP array representation of the raw JSON, the second
* is an AppInfo object that is the parsed version of the JSON.
*
* @throws AppInfoLoadException
*
* @internal
*/
static function loadFromJsonFileWithRaw($path)
{
if (!file_exists($path)) {
throw new AppInfoLoadException("File doesn't exist: \"$path\"");
}
$str = Util::stripUtf8Bom(file_get_contents($path));
$jsonArr = json_decode($str, true, 10);
if (is_null($jsonArr)) {
throw new AppInfoLoadException("JSON parse error: \"$path\"");
}
$appInfo = self::loadFromJson($jsonArr);
return array($jsonArr, $appInfo);
}
/**
* Parses a JSON object to build an AppInfo object. If you would like to load this from a file,
* use the loadFromJsonFile() method.
*
* @param array $jsonArr Output from json_decode($str, true)
*
* @return AppInfo
*
* @throws AppInfoLoadException
*/
static function loadFromJson($jsonArr)
{
if (!is_array($jsonArr)) {
throw new AppInfoLoadException("Expecting JSON object, got something else");
}
$requiredKeys = array("key", "secret");
foreach ($requiredKeys as $key) {
if (!array_key_exists($key, $jsonArr)) {
throw new AppInfoLoadException("Missing field \"$key\"");
}
if (!is_string($jsonArr[$key])) {
throw new AppInfoLoadException("Expecting field \"$key\" to be a string");
}
}
// Check app_key and app_secret
$appKey = $jsonArr["key"];
$appSecret = $jsonArr["secret"];
$tokenErr = self::getTokenPartError($appKey);
if (!is_null($tokenErr)) {
throw new AppInfoLoadException("Field \"key\" doesn't look like a valid app key: $tokenErr");
}
$tokenErr = self::getTokenPartError($appSecret);
if (!is_null($tokenErr)) {
throw new AppInfoLoadException("Field \"secret\" doesn't look like a valid app secret: $tokenErr");
}
// Check for the optional 'host' field
if (!array_key_exists('host', $jsonArr)) {
$host = null;
}
else {
$baseHost = $jsonArr["host"];
if (!is_string($baseHost)) {
throw new AppInfoLoadException("Optional field \"host\" must be a string");
}
$api = "api-$baseHost";
$content = "api-content-$baseHost";
$web = "meta-$baseHost";
$host = new Host($api, $content, $web);
}
return new AppInfo($appKey, $appSecret, $host);
}
/**
* Use this to check that a function argument is of type <code>AppInfo</code>
*
* @internal
*/
static function checkArg($argName, $argValue)
{
if (!($argValue instanceof self)) Checker::throwError($argName, $argValue, __CLASS__);
}
/**
* Use this to check that a function argument is either <code>null</code> or of type
* <code>AppInfo</code>.
*
* @internal
*/
static function checkArgOrNull($argName, $argValue)
{
if ($argValue === null) return;
if (!($argValue instanceof self)) Checker::throwError($argName, $argValue, __CLASS__);
}
/** @internal */
static function getTokenPartError($s)
{
if ($s === null) return "can't be null";
if (strlen($s) === 0) return "can't be empty";
if (strstr($s, ' ')) return "can't contain a space";
return null; // 'null' means "no error"
}
/** @internal */
static function checkKeyArg($key)
{
$error = self::getTokenPartError($key);
if ($error === null) return;
throw new \InvalidArgumentException("Bad 'key': \"$key\": $error.");
}
/** @internal */
static function checkSecretArg($secret)
{
$error = self::getTokenPartError($secret);
if ($error === null) return;
throw new \InvalidArgumentException("Bad 'secret': \"$secret\": $error.");
}
}