mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-05 20:50:24 +00:00
116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
|
/*
|
||
|
Copyright 2015 The Kubernetes Authors.
|
||
|
|
||
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
you may not use this file except in compliance with the License.
|
||
|
You may obtain a copy of the License at
|
||
|
|
||
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
||
|
Unless required by applicable law or agreed to in writing, software
|
||
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
See the License for the specific language governing permissions and
|
||
|
limitations under the License.
|
||
|
*/
|
||
|
|
||
|
package proxy
|
||
|
|
||
|
import (
|
||
|
"crypto/tls"
|
||
|
"fmt"
|
||
|
"net"
|
||
|
"net/http"
|
||
|
"net/url"
|
||
|
|
||
|
"github.com/golang/glog"
|
||
|
|
||
|
utilnet "k8s.io/apimachinery/pkg/util/net"
|
||
|
"k8s.io/apimachinery/third_party/forked/golang/netutil"
|
||
|
)
|
||
|
|
||
|
func DialURL(url *url.URL, transport http.RoundTripper) (net.Conn, error) {
|
||
|
dialAddr := netutil.CanonicalAddr(url)
|
||
|
|
||
|
dialer, err := utilnet.DialerFor(transport)
|
||
|
if err != nil {
|
||
|
glog.V(5).Infof("Unable to unwrap transport %T to get dialer: %v", transport, err)
|
||
|
}
|
||
|
|
||
|
switch url.Scheme {
|
||
|
case "http":
|
||
|
if dialer != nil {
|
||
|
return dialer("tcp", dialAddr)
|
||
|
}
|
||
|
return net.Dial("tcp", dialAddr)
|
||
|
case "https":
|
||
|
// Get the tls config from the transport if we recognize it
|
||
|
var tlsConfig *tls.Config
|
||
|
var tlsConn *tls.Conn
|
||
|
var err error
|
||
|
tlsConfig, err = utilnet.TLSClientConfig(transport)
|
||
|
if err != nil {
|
||
|
glog.V(5).Infof("Unable to unwrap transport %T to get at TLS config: %v", transport, err)
|
||
|
}
|
||
|
|
||
|
if dialer != nil {
|
||
|
// We have a dialer; use it to open the connection, then
|
||
|
// create a tls client using the connection.
|
||
|
netConn, err := dialer("tcp", dialAddr)
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
if tlsConfig == nil {
|
||
|
// tls.Client requires non-nil config
|
||
|
glog.Warningf("using custom dialer with no TLSClientConfig. Defaulting to InsecureSkipVerify")
|
||
|
// tls.Handshake() requires ServerName or InsecureSkipVerify
|
||
|
tlsConfig = &tls.Config{
|
||
|
InsecureSkipVerify: true,
|
||
|
}
|
||
|
} else if len(tlsConfig.ServerName) == 0 && !tlsConfig.InsecureSkipVerify {
|
||
|
// tls.Handshake() requires ServerName or InsecureSkipVerify
|
||
|
// infer the ServerName from the hostname we're connecting to.
|
||
|
inferredHost := dialAddr
|
||
|
if host, _, err := net.SplitHostPort(dialAddr); err == nil {
|
||
|
inferredHost = host
|
||
|
}
|
||
|
// Make a copy to avoid polluting the provided config
|
||
|
tlsConfigCopy := tlsConfig.Clone()
|
||
|
tlsConfigCopy.ServerName = inferredHost
|
||
|
tlsConfig = tlsConfigCopy
|
||
|
}
|
||
|
tlsConn = tls.Client(netConn, tlsConfig)
|
||
|
if err := tlsConn.Handshake(); err != nil {
|
||
|
netConn.Close()
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
} else {
|
||
|
// Dial
|
||
|
tlsConn, err = tls.Dial("tcp", dialAddr, tlsConfig)
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Return if we were configured to skip validation
|
||
|
if tlsConfig != nil && tlsConfig.InsecureSkipVerify {
|
||
|
return tlsConn, nil
|
||
|
}
|
||
|
|
||
|
// Verify
|
||
|
host, _, _ := net.SplitHostPort(dialAddr)
|
||
|
if tlsConfig != nil && len(tlsConfig.ServerName) > 0 {
|
||
|
host = tlsConfig.ServerName
|
||
|
}
|
||
|
if err := tlsConn.VerifyHostname(host); err != nil {
|
||
|
tlsConn.Close()
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
return tlsConn, nil
|
||
|
default:
|
||
|
return nil, fmt.Errorf("Unknown scheme: %s", url.Scheme)
|
||
|
}
|
||
|
}
|