mirror of https://github.com/k3s-io/k3s
136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
/*
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Copyright (c) 2018 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package lookup
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import (
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"context"
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"crypto/x509"
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"encoding/base64"
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"log"
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"net/url"
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"github.com/vmware/govmomi/lookup/methods"
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"github.com/vmware/govmomi/lookup/types"
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"github.com/vmware/govmomi/vim25"
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"github.com/vmware/govmomi/vim25/soap"
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vim "github.com/vmware/govmomi/vim25/types"
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)
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const (
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Namespace = "lookup"
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Version = "2.0"
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Path = "/lookupservice" + vim25.Path
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)
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var (
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ServiceInstance = vim.ManagedObjectReference{
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Type: "LookupServiceInstance",
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Value: "ServiceInstance",
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}
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)
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// Client is a soap.Client targeting the SSO Lookup Service API endpoint.
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type Client struct {
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*soap.Client
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ServiceContent types.LookupServiceContent
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}
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// NewClient returns a client targeting the SSO Lookup Service API endpoint.
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func NewClient(ctx context.Context, c *vim25.Client) (*Client, error) {
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sc := c.Client.NewServiceClient(Path, Namespace)
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sc.Version = Version
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req := types.RetrieveServiceContent{
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This: ServiceInstance,
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}
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res, err := methods.RetrieveServiceContent(ctx, sc, &req)
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if err != nil {
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return nil, err
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}
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return &Client{sc, res.Returnval}, nil
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}
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func (c *Client) List(ctx context.Context, filter *types.LookupServiceRegistrationFilter) ([]types.LookupServiceRegistrationInfo, error) {
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req := types.List{
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This: *c.ServiceContent.ServiceRegistration,
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FilterCriteria: filter,
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}
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res, err := methods.List(ctx, c, &req)
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if err != nil {
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return nil, err
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}
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return res.Returnval, nil
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}
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func (c *Client) SiteID(ctx context.Context) (string, error) {
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req := types.GetSiteId{
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This: *c.ServiceContent.ServiceRegistration,
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}
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res, err := methods.GetSiteId(ctx, c, &req)
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if err != nil {
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return "", err
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}
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return res.Returnval, nil
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}
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// EndpointURL uses the Lookup Service to find the endpoint URL and thumbprint for the given filter.
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// If the endpoint is found, its TLS certificate is also added to the vim25.Client's trusted host thumbprints.
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// If the Lookup Service is not available, the given path is returned as the default.
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func EndpointURL(ctx context.Context, c *vim25.Client, path string, filter *types.LookupServiceRegistrationFilter) string {
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if lu, err := NewClient(ctx, c); err == nil {
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info, _ := lu.List(ctx, filter)
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if len(info) != 0 && len(info[0].ServiceEndpoints) != 0 {
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endpoint := &info[0].ServiceEndpoints[0]
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path = endpoint.Url
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if u, err := url.Parse(path); err == nil {
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if c.Thumbprint(u.Host) == "" {
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c.SetThumbprint(u.Host, endpointThumbprint(endpoint))
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}
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}
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}
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}
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return path
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}
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// endpointThumbprint converts the base64 encoded endpoint certificate to a SHA1 thumbprint.
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func endpointThumbprint(endpoint *types.LookupServiceRegistrationEndpoint) string {
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if len(endpoint.SslTrust) == 0 {
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return ""
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}
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enc := endpoint.SslTrust[0]
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b, err := base64.StdEncoding.DecodeString(enc)
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if err != nil {
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log.Printf("base64.Decode(%q): %s", enc, err)
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return ""
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}
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cert, err := x509.ParseCertificate(b)
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if err != nil {
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log.Printf("x509.ParseCertificate(%q): %s", enc, err)
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return ""
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}
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return soap.ThumbprintSHA1(cert)
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}
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