如何在PHP中使用CURL获取SSL证书信息？

php ssl https curl

2022-08-30 15:01:58

我希望能够使用 CURL 读取 SSL 证书信息。从 Linux 控制台，我得到这个响应标头：

GET https://www.google.com/ -ed
Cache-Control: private, max-age=0
Connection: close
Date: Sun, 20 Jun 2010 21:34:12 GMT
Server: gws
Content-Type: text/html; charset=ISO-8859-1
Expires: -1
Client-Date: Sun, 20 Jun 2010 21:34:18 GMT
Client-Peer: 66.102.13.106:443
Client-Response-Num: 1
Client-SSL-Cert-Issuer: /C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte SGC CA
Client-SSL-Cert-Subject: /C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.com
Client-SSL-Cipher: RC4-SHA
Client-SSL-Warning: Peer certificate not verified
Set-Cookie: PREF=ID=4d56960f6e3ad831:TM=1277069652:LM=1277069652:S=GF-w8Yc-_61NBzzJ; expires=Tue, 19-Jun-2012 21:34:12 GMT; path=/; domain=.google.com
Title: Google
X-XSS-Protection: 1; mode=block

但是使用 CURL 时，标头要短得多：

HTTP/1.1 200 OK
Date: Sun, 20 Jun 2010 21:39:07 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=2d4fb1c933eebd09:TM=1277069947:LM=1277069947:S=6_TgGKzD0rM4IWms; expires=Tue, 19-Jun-2012 21:39:07 GMT; path=/; domain=.google.com
Server: gws
X-XSS-Protection: 1; mode=block
Transfer-Encoding: chunked

有没有可能获得这些信息，使用CURL或其他PHP函数的完整标头？

答案 1

您将使用将证书作为资源获取。将该资源插入以获取更多证书信息。stream_context_get_params$certinfo = openssl_x509_parse($cert['options']['ssl']['peer_certificate']);

$url = "http://www.google.com";
$orignal_parse = parse_url($url, PHP_URL_HOST);
$get = stream_context_create(array("ssl" => array("capture_peer_cert" => TRUE)));
$read = stream_socket_client("ssl://".$orignal_parse.":443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $get);
$cert = stream_context_get_params($read);
$certinfo = openssl_x509_parse($cert['options']['ssl']['peer_certificate']);
print_r($certinfo);

示例结果

答案 2

编辑：PHP 5.3.2 中添加了一个选项。查看 http://bugs.php.net/49253CURLINFO_CERTINFO

显然，该信息是由响应标头中的代理提供给您的。如果你想依赖它，你可以使用 curl 的 CURLOPT_HEADER 选项将标头包含在输出中。true

但是，要在不依赖某些代理的情况下检索证书，您必须执行以下操作

<?php
$g = stream_context_create (array("ssl" => array("capture_peer_cert" => true)));
$r = fopen("https://www.google.com/", "rb", false, $g);
$cont = stream_context_get_params($r);
var_dump($cont["options"]["ssl"]["peer_certificate"]);

您可以使用 OpenSSL 扩展操作的值。$cont["options"]["ssl"]["peer_certificate"]

编辑：此选项更好，因为它实际上不会发出HTTP请求，也不需要：allow_url_fopen

<?php
$g = stream_context_create (array("ssl" => array("capture_peer_cert" => true)));
$r = stream_socket_client("ssl://www.google.com:443", $errno, $errstr, 30,
    STREAM_CLIENT_CONNECT, $g);
$cont = stream_context_get_params($r);
var_dump($cont["options"]["ssl"]["peer_certificate"]);