我正在使用以下已经工作了一段时间的证书固定代码(为简洁起见,错误处理被删除):
private static SSLContext _ssl_context = null;
public static SSLSocketFactory get_ssl_socket_factory(Context context)
{
if (_ssl_context != null) {
return _ssl_context.getSocketFactory();
}
KeyStore keystore = get_keystore(context);
try
{
TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
tmf.init(keystore);
_ssl_context = SSLContext.getInstance("TLS");
_ssl_context.init(null, tmf.getTrustManagers(), null);
return _ssl_context.getSocketFactory();
}
catch (GeneralSecurityException e) {
// ...
}
}
这或多或少是官方文档提供的代码。然后使用 SocketFactory 如下:
if ("https".equals(target.getProtocol()) &&
"example.com".equals(target.getHost()) &&
huc instanceof HttpsURLConnection)
{
((HttpsURLConnection) huc).setSSLSocketFactory(
SSLHelper.get_ssl_socket_factory(this));
}
当我在 Android 8 设备上运行此代码时,一切正常。然而,在我的 Android 9 模拟器上,抛出了一个异常:
E/App: https://example.com/page.html could not be retrieved! (Hostname example.com not verified:
certificate: sha1/VYMjxowFaRuZpycEoz+srAuXzlU=
subjectAltNames: [])
javax.net.ssl.SSLPeerUnverifiedException: Hostname example.com not verified:
certificate: sha1/VYMjxowFaRuZpycEoz+srAuXzlU=
subjectAltNames: []
at com.android.okhttp.internal.io.RealConnection.connectTls(RealConnection.java:201)
at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:149)
at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:26)
at ...
Android 9 中似乎发生了一些变化,但到目前为止,我还没有找到任何有关此行为的信息。我的想法如下:
- 也许这种进行证书固定的方式已被弃用
- 也许 Android 9 将不再使用 SHA1 证书验证域
还有什么想法吗?