// 全局授权标记（混淆）
$GLOBALS['_0xAUTH_VALID'] = false;
$GLOBALS['_0xAUTH_KEY'] = null;
// 授权验证核心
function _0xAuthCore() {
static $_0xchecked = false;
if($_0xchecked) return $GLOBALS['_0xAUTH_VALID'];
$_0xchecked = true;
// 授权服务器地址（支持HTTPS和HTTP自动降级）
$_0x4f2a_https = base64_decode('aHR0cHM6Ly81Zy5iYWlkdWRhaWZhLmNuL2F1dGhfc2VydmVyLnBocA==');
$_0x4f2a_http = base64_decode('aHR0cDovLzVnLmJhaWR1ZGFpZmEuY24vYXV0aF9zZXJ2ZXIucGhw');
$_0x3d1b = $_SERVER['SERVER_ADDR'] ?? $_SERVER['LOCAL_ADDR'] ?? @gethostbyname(@gethostname());
$_0x2c8e = $_SERVER['DOCUMENT_ROOT'] . '/runtime/.auth_' . md5($_0x3d1b . 'CORE') . '.dat';
if(!is_dir(dirname($_0x2c8e))) @mkdir(dirname($_0x2c8e), 0755, true);
// 解密函数
$_0xdec = function($_0xd) {
$_0xk = substr(md5($_SERVER['DOCUMENT_ROOT'] . 'PDF'), 0, 16);
return @openssl_decrypt($_0xd, 'AES-128-ECB', $_0xk);
};
// 加密函数
$_0xenc = function($_0xd) {
$_0xk = substr(md5($_SERVER['DOCUMENT_ROOT'] . 'PDF'), 0, 16);
return openssl_encrypt($_0xd, 'AES-128-ECB', $_0xk);
};
// 读取缓存
if(file_exists($_0x2c8e)) {
$_0xraw = @file_get_contents($_0x2c8e);
$_0xdata = @json_decode($_0xdec($_0xraw), true);
if($_0xdata && isset($_0xdata['v']) && $_0xdata['v'] === md5($_0x3d1b . 'CORE_V2')) {
if(time() - ($_0xdata['t'] ?? 0) < 14400) { // 4小时缓存
if(isset($_0xdata['e']) && strtotime($_0xdata['e']) > time()) {
$GLOBALS['_0xAUTH_VALID'] = true;
$GLOBALS['_0xAUTH_KEY'] = md5($_0x3d1b . date('Ymd') . 'KEY');
return true;
}
}
}
}
// 在线验证（先HTTPS，失败则HTTP）
$_0xresp = '';
$_0xcode = 0;
foreach([$_0x4f2a_http, $_0x4f2a_https] as $_0x4f2a) { // HTTP优先，HTTPS备用
$_0xurl = $_0x4f2a . '?domain=' . urlencode($_0x3d1b) . '&product=pdf_fan&v=3&t=' . time();
$_0xch = @curl_init();
if(!$_0xch) continue;
curl_setopt_array($_0xch, [
CURLOPT_URL => $_0xurl,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_TIMEOUT => 5,
CURLOPT_CONNECTTIMEOUT => 3,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_SSL_VERIFYHOST => false,
CURLOPT_USERAGENT => 'PDFCore/3.0',
CURLOPT_HTTPHEADER => ['X-Auth-Core: ' . md5($_0x3d1b . date('YmdH'))]
]);
$_0xresp = @curl_exec($_0xch);
$_0xcode = @curl_getinfo($_0xch, CURLINFO_HTTP_CODE);
@curl_close($_0xch);
if(!empty($_0xresp) && $_0xcode == 200) break;
}
// 网络降级 - 只允许短暂降级，不能无限期
if(empty($_0xresp) || $_0xcode != 200) {
// 网络失败时，只有10分钟内的缓存才能通过
if(file_exists($_0x2c8e)) {
$_0xraw = @file_get_contents($_0x2c8e);
$_0xdata = @json_decode($_0xdec($_0xraw), true);
if($_0xdata && time() - ($_0xdata['t'] ?? 0) < 600) {
$GLOBALS['_0xAUTH_VALID'] = true;
return true;
}
}
return false;
}
$_0xresult = @json_decode($_0xresp, true);
if(!$_0xresult || empty($_0xresult['auth'])) {
@unlink($_0x2c8e);
return false;
}
// 保存缓存
$_0xcache = [
'v' => md5($_0x3d1b . 'CORE_V2'),
't' => time(),
'e' => $_0xresult['data']['expire_time'] ?? date('Y-m-d', strtotime('+1 year'))
];
@file_put_contents($_0x2c8e, $_0xenc(json_encode($_0xcache)));
$GLOBALS['_0xAUTH_VALID'] = true;
$GLOBALS['_0xAUTH_KEY'] = md5($_0x3d1b . date('Ymd') . 'KEY');
return true;
}
// 授权检查钩子 - 嵌入关键函数
function _0xRequireAuth($funcName = '') {
if(!$GLOBALS['_0xAUTH_VALID']) {
if(!_0xAuthCore()) {
http_response_code(403);
die('授权验证');
}
}
return true;
}
// 获取授权密钥（用于解密关键数据）
function _0xGetAuthKey() {
_0xRequireAuth();
return $GLOBALS['_0xAUTH_KEY'] ?? '';
}
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哈尔滨SEO外包
pdf泛程序
哈尔滨SEO外包
哈尔滨SEO外包
2025-07-04T02:33:04+08:00
pdf泛程序
2025-07-04T02:33:04+08:00
2025-07-04T02:33:04+08:00
哈尔滨SEO外包
TCPDF 6.6.2 (http://www.tcpdf.org)
uuid:fad703da-4d11-9010-76c2-634edd4f65c8
uuid:fad703da-4d11-9010-76c2-634edd4f65c8
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pdf
Adobe PDF Schema
internal
Adobe PDF Schema
InstanceID
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xmpMM
XMP Media Management Schema
internal
UUID based identifier for specific incarnation of a document
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http://www.aiim.org/pdfa/ns/id/
pdfaid
PDF/A ID Schema
internal
Part of PDF/A standard
part
Integer
internal
Amendment of PDF/A standard
amd
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Conformance level of PDF/A standard
conformance
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