/**
* check that the nonce is not repeated
*/
function check_nonce($consumer, $token, $nonce, $timestamp)
{
// verify that the nonce is uniqueish
$found = $this->data_store->lookup_nonce($consumer, $token, $nonce, $timestamp);
if ($found) {
___throwException("Nonce already used: {$nonce}");
}
}
function _output($path, $type = null)
{
$toFile = false;
//输出到文件
if ($path != 'stream') {
if (!is_dir(dirname($path))) {
___throwException('指定的路径不可用 =>' . $path);
}
$type = pathinfo($path, PATHINFO_EXTENSION);
$toFile = true;
}
//png的alpha校正
$this->_pngalpha($type);
if ($type == "jpg") {
$type = "jpeg";
}
$func = "image" . $type;
if (!function_exists($func)) {
$type = 'gif';
$func = 'imagegif';
}
if ($toFile) {
call_user_func($func, $this->img, $path);
} else {
if (!headers_sent()) {
header("Content-type:image/" . $type);
}
call_user_func($func, $this->img);
}
return $this;
}
/**
* builds the Authorization: header
*/
function to_header()
{
$out = 'Authorization: OAuth realm=""';
$total = array();
foreach ($this->parameters as $k => $v) {
if (substr($k, 0, 5) != "oauth") {
continue;
}
if (is_array($v)) {
___throwException('Arrays not supported in headers');
}
$out .= ',' . ns_OAuthUtil::urlencode_rfc3986($k) . '="' . ns_OAuthUtil::urlencode_rfc3986($v) . '"';
}
return $out;
}