forked from TrueCloudLab/certificates
690 lines
19 KiB
Go
690 lines
19 KiB
Go
package ca
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import (
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"bytes"
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"crypto/x509"
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"encoding/json"
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"io"
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"net/http"
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"net/url"
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"path"
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"strconv"
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"time"
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"github.com/pkg/errors"
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adminAPI "github.com/smallstep/certificates/authority/admin/api"
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"github.com/smallstep/certificates/authority/provisioner"
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"github.com/smallstep/certificates/errs"
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"go.step.sm/cli-utils/token"
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"go.step.sm/cli-utils/token/provision"
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"go.step.sm/crypto/jose"
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"go.step.sm/crypto/randutil"
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"go.step.sm/linkedca"
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"google.golang.org/protobuf/encoding/protojson"
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)
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var adminURLPrefix = "admin"
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// AdminClient implements an HTTP client for the CA server.
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type AdminClient struct {
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client *uaClient
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endpoint *url.URL
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retryFunc RetryFunc
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opts []ClientOption
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x5cJWK *jose.JSONWebKey
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x5cCertFile string
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x5cCertStrs []string
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x5cCert *x509.Certificate
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x5cIssuer string
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x5cSubject string
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}
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// AdminClientError is the client side representation of an
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// AdminError returned by the CA.
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type AdminClientError struct {
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Type string `json:"type"`
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Detail string `json:"detail"`
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Message string `json:"message"`
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}
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// Error returns the AdminClientError message as the error message
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func (e *AdminClientError) Error() string {
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return e.Message
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}
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// NewAdminClient creates a new AdminClient with the given endpoint and options.
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func NewAdminClient(endpoint string, opts ...ClientOption) (*AdminClient, error) {
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u, err := parseEndpoint(endpoint)
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if err != nil {
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return nil, err
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}
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// Retrieve transport from options.
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o := new(clientOptions)
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if err := o.apply(opts); err != nil {
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return nil, err
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}
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tr, err := o.getTransport(endpoint)
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if err != nil {
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return nil, err
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}
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return &AdminClient{
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client: newClient(tr),
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endpoint: u,
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retryFunc: o.retryFunc,
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opts: opts,
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x5cJWK: o.x5cJWK,
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x5cCertFile: o.x5cCertFile,
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x5cCertStrs: o.x5cCertStrs,
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x5cCert: o.x5cCert,
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x5cIssuer: o.x5cIssuer,
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x5cSubject: o.x5cSubject,
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}, nil
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}
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func (c *AdminClient) generateAdminToken(urlPath string) (string, error) {
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// A random jwt id will be used to identify duplicated tokens
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jwtID, err := randutil.Hex(64) // 256 bits
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if err != nil {
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return "", err
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}
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now := time.Now()
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tokOptions := []token.Options{
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token.WithJWTID(jwtID),
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token.WithKid(c.x5cJWK.KeyID),
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token.WithIssuer(c.x5cIssuer),
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token.WithAudience(urlPath),
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token.WithValidity(now, now.Add(token.DefaultValidity)),
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token.WithX5CCerts(c.x5cCertStrs),
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}
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tok, err := provision.New(c.x5cSubject, tokOptions...)
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if err != nil {
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return "", err
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}
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return tok.SignedString(c.x5cJWK.Algorithm, c.x5cJWK.Key)
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}
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func (c *AdminClient) retryOnError(r *http.Response) bool {
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if c.retryFunc != nil {
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if c.retryFunc(r.StatusCode) {
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o := new(clientOptions)
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if err := o.apply(c.opts); err != nil {
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return false
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}
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tr, err := o.getTransport(c.endpoint.String())
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if err != nil {
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return false
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}
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r.Body.Close()
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c.client.SetTransport(tr)
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return true
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}
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}
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return false
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}
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// GetAdmin performs the GET /admin/admin/{id} request to the CA.
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func (c *AdminClient) GetAdmin(id string) (*linkedca.Admin, error) {
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var retried bool
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u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "admins", id)})
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retry:
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resp, err := c.client.Get(u.String())
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if err != nil {
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return nil, errors.Wrapf(err, "client GET %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var adm = new(linkedca.Admin)
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if err := readProtoJSON(resp.Body, adm); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return adm, nil
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}
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// AdminOption is the type of options passed to the Admin method.
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type AdminOption func(o *adminOptions) error
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type adminOptions struct {
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cursor string
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limit int
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}
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func (o *adminOptions) apply(opts []AdminOption) (err error) {
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for _, fn := range opts {
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if err = fn(o); err != nil {
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return
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}
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}
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return
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}
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func (o *adminOptions) rawQuery() string {
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v := url.Values{}
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if len(o.cursor) > 0 {
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v.Set("cursor", o.cursor)
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}
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if o.limit > 0 {
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v.Set("limit", strconv.Itoa(o.limit))
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}
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return v.Encode()
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}
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// WithAdminCursor will request the admins starting with the given cursor.
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func WithAdminCursor(cursor string) AdminOption {
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return func(o *adminOptions) error {
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o.cursor = cursor
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return nil
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}
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}
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// WithAdminLimit will request the given number of admins.
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func WithAdminLimit(limit int) AdminOption {
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return func(o *adminOptions) error {
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o.limit = limit
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return nil
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}
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}
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// GetAdminsPaginate returns a page from the the GET /admin/admins request to the CA.
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func (c *AdminClient) GetAdminsPaginate(opts ...AdminOption) (*adminAPI.GetAdminsResponse, error) {
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var retried bool
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o := new(adminOptions)
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if err := o.apply(opts); err != nil {
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return nil, err
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}
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u := c.endpoint.ResolveReference(&url.URL{
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Path: "/admin/admins",
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RawQuery: o.rawQuery(),
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})
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("GET", u.String(), http.NoBody)
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if err != nil {
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return nil, errors.Wrapf(err, "create GET %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "client GET %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var body = new(adminAPI.GetAdminsResponse)
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if err := readJSON(resp.Body, body); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return body, nil
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}
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// GetAdmins returns all admins from the GET /admin/admins request to the CA.
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func (c *AdminClient) GetAdmins(opts ...AdminOption) ([]*linkedca.Admin, error) {
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var (
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cursor = ""
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admins = []*linkedca.Admin{}
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)
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for {
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resp, err := c.GetAdminsPaginate(WithAdminCursor(cursor), WithAdminLimit(100))
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if err != nil {
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return nil, err
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}
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admins = append(admins, resp.Admins...)
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if resp.NextCursor == "" {
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return admins, nil
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}
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cursor = resp.NextCursor
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}
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}
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// CreateAdmin performs the POST /admin/admins request to the CA.
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func (c *AdminClient) CreateAdmin(createAdminRequest *adminAPI.CreateAdminRequest) (*linkedca.Admin, error) {
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var retried bool
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body, err := json.Marshal(createAdminRequest)
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if err != nil {
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return nil, errs.Wrap(http.StatusInternalServerError, err, "error marshaling request")
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}
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u := c.endpoint.ResolveReference(&url.URL{Path: "/admin/admins"})
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("POST", u.String(), bytes.NewReader(body))
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if err != nil {
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return nil, errors.Wrapf(err, "create GET %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "client POST %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var adm = new(linkedca.Admin)
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if err := readProtoJSON(resp.Body, adm); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return adm, nil
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}
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// RemoveAdmin performs the DELETE /admin/admins/{id} request to the CA.
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func (c *AdminClient) RemoveAdmin(id string) error {
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var retried bool
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u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "admins", id)})
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("DELETE", u.String(), http.NoBody)
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if err != nil {
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return errors.Wrapf(err, "create DELETE %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return errors.Wrapf(err, "client DELETE %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return readAdminError(resp.Body)
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}
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return nil
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}
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// UpdateAdmin performs the PUT /admin/admins/{id} request to the CA.
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func (c *AdminClient) UpdateAdmin(id string, uar *adminAPI.UpdateAdminRequest) (*linkedca.Admin, error) {
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var retried bool
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body, err := json.Marshal(uar)
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if err != nil {
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return nil, errs.Wrap(http.StatusInternalServerError, err, "error marshaling request")
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}
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u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "admins", id)})
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("PATCH", u.String(), bytes.NewReader(body))
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if err != nil {
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return nil, errors.Wrapf(err, "create PUT %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "client PUT %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var adm = new(linkedca.Admin)
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if err := readProtoJSON(resp.Body, adm); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return adm, nil
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}
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// GetProvisioner performs the GET /admin/provisioners/{name} request to the CA.
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func (c *AdminClient) GetProvisioner(opts ...ProvisionerOption) (*linkedca.Provisioner, error) {
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var retried bool
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o := new(provisionerOptions)
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if err := o.apply(opts); err != nil {
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return nil, err
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}
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var u *url.URL
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switch {
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case len(o.id) > 0:
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u = c.endpoint.ResolveReference(&url.URL{
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Path: "/admin/provisioners/id",
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RawQuery: o.rawQuery(),
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})
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case len(o.name) > 0:
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u = c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "provisioners", o.name)})
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default:
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return nil, errors.New("must set either name or id in method options")
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}
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("GET", u.String(), http.NoBody)
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if err != nil {
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return nil, errors.Wrapf(err, "create PUT %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "client GET %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var prov = new(linkedca.Provisioner)
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if err := readProtoJSON(resp.Body, prov); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return prov, nil
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}
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// GetProvisionersPaginate performs the GET /admin/provisioners request to the CA.
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func (c *AdminClient) GetProvisionersPaginate(opts ...ProvisionerOption) (*adminAPI.GetProvisionersResponse, error) {
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var retried bool
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o := new(provisionerOptions)
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if err := o.apply(opts); err != nil {
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return nil, err
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}
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u := c.endpoint.ResolveReference(&url.URL{
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Path: "/admin/provisioners",
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RawQuery: o.rawQuery(),
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})
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return nil, errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("GET", u.String(), http.NoBody)
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if err != nil {
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return nil, errors.Wrapf(err, "create PUT %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "client GET %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return nil, readAdminError(resp.Body)
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}
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var body = new(adminAPI.GetProvisionersResponse)
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if err := readJSON(resp.Body, body); err != nil {
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return nil, errors.Wrapf(err, "error reading %s", u)
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}
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return body, nil
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}
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// GetProvisioners returns all admins from the GET /admin/admins request to the CA.
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func (c *AdminClient) GetProvisioners(opts ...AdminOption) (provisioner.List, error) {
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var (
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cursor = ""
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provs = provisioner.List{}
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)
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for {
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resp, err := c.GetProvisionersPaginate(WithProvisionerCursor(cursor), WithProvisionerLimit(100))
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if err != nil {
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return nil, err
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}
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provs = append(provs, resp.Provisioners...)
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if resp.NextCursor == "" {
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return provs, nil
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}
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cursor = resp.NextCursor
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}
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}
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// RemoveProvisioner performs the DELETE /admin/provisioners/{name} request to the CA.
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func (c *AdminClient) RemoveProvisioner(opts ...ProvisionerOption) error {
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var (
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u *url.URL
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retried bool
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)
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o := new(provisionerOptions)
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if err := o.apply(opts); err != nil {
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return err
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}
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switch {
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case len(o.id) > 0:
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u = c.endpoint.ResolveReference(&url.URL{
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Path: path.Join(adminURLPrefix, "provisioners/id"),
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RawQuery: o.rawQuery(),
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})
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case len(o.name) > 0:
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u = c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "provisioners", o.name)})
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default:
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return errors.New("must set either name or id in method options")
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}
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tok, err := c.generateAdminToken(u.Path)
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if err != nil {
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return errors.Wrapf(err, "error generating admin token")
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}
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req, err := http.NewRequest("DELETE", u.String(), http.NoBody)
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if err != nil {
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return errors.Wrapf(err, "create DELETE %s request failed", u)
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}
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req.Header.Add("Authorization", tok)
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retry:
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resp, err := c.client.Do(req)
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if err != nil {
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return errors.Wrapf(err, "client DELETE %s failed", u)
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}
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if resp.StatusCode >= 400 {
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if !retried && c.retryOnError(resp) {
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retried = true
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goto retry
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}
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return readAdminError(resp.Body)
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}
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return nil
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}
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// CreateProvisioner performs the POST /admin/provisioners request to the CA.
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func (c *AdminClient) CreateProvisioner(prov *linkedca.Provisioner) (*linkedca.Provisioner, error) {
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var retried bool
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body, err := protojson.Marshal(prov)
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if err != nil {
|
|
return nil, errs.Wrap(http.StatusInternalServerError, err, "error marshaling request")
|
|
}
|
|
u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "provisioners")})
|
|
tok, err := c.generateAdminToken(u.Path)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error generating admin token")
|
|
}
|
|
req, err := http.NewRequest("POST", u.String(), bytes.NewReader(body))
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "create POST %s request failed", u)
|
|
}
|
|
req.Header.Add("Authorization", tok)
|
|
retry:
|
|
resp, err := c.client.Do(req)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "client POST %s failed", u)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
if !retried && c.retryOnError(resp) {
|
|
retried = true
|
|
goto retry
|
|
}
|
|
return nil, readAdminError(resp.Body)
|
|
}
|
|
var nuProv = new(linkedca.Provisioner)
|
|
if err := readProtoJSON(resp.Body, nuProv); err != nil {
|
|
return nil, errors.Wrapf(err, "error reading %s", u)
|
|
}
|
|
return nuProv, nil
|
|
}
|
|
|
|
// UpdateProvisioner performs the PUT /admin/provisioners/{name} request to the CA.
|
|
func (c *AdminClient) UpdateProvisioner(name string, prov *linkedca.Provisioner) error {
|
|
var retried bool
|
|
body, err := protojson.Marshal(prov)
|
|
if err != nil {
|
|
return errs.Wrap(http.StatusInternalServerError, err, "error marshaling request")
|
|
}
|
|
u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "provisioners", name)})
|
|
tok, err := c.generateAdminToken(u.Path)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error generating admin token")
|
|
}
|
|
req, err := http.NewRequest("PUT", u.String(), bytes.NewReader(body))
|
|
if err != nil {
|
|
return errors.Wrapf(err, "create PUT %s request failed", u)
|
|
}
|
|
req.Header.Add("Authorization", tok)
|
|
retry:
|
|
resp, err := c.client.Do(req)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "client PUT %s failed", u)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
if !retried && c.retryOnError(resp) {
|
|
retried = true
|
|
goto retry
|
|
}
|
|
return readAdminError(resp.Body)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GetExternalAccountKeysPaginate returns a page from the GET /admin/acme/eab request to the CA.
|
|
func (c *AdminClient) GetExternalAccountKeysPaginate(provisionerName, reference string, opts ...AdminOption) (*adminAPI.GetExternalAccountKeysResponse, error) {
|
|
var retried bool
|
|
o := new(adminOptions)
|
|
if err := o.apply(opts); err != nil {
|
|
return nil, err
|
|
}
|
|
p := path.Join(adminURLPrefix, "acme/eab", provisionerName)
|
|
if reference != "" {
|
|
p = path.Join(p, "/", reference)
|
|
}
|
|
u := c.endpoint.ResolveReference(&url.URL{
|
|
Path: p,
|
|
RawQuery: o.rawQuery(),
|
|
})
|
|
tok, err := c.generateAdminToken(u.Path)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error generating admin token")
|
|
}
|
|
req, err := http.NewRequest("GET", u.String(), http.NoBody)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "create GET %s request failed", u)
|
|
}
|
|
req.Header.Add("Authorization", tok)
|
|
retry:
|
|
resp, err := c.client.Do(req)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "client GET %s failed", u)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
if !retried && c.retryOnError(resp) {
|
|
retried = true
|
|
goto retry
|
|
}
|
|
return nil, readAdminError(resp.Body)
|
|
}
|
|
var body = new(adminAPI.GetExternalAccountKeysResponse)
|
|
if err := readJSON(resp.Body, body); err != nil {
|
|
return nil, errors.Wrapf(err, "error reading %s", u)
|
|
}
|
|
return body, nil
|
|
}
|
|
|
|
// CreateExternalAccountKey performs the POST /admin/acme/eab request to the CA.
|
|
func (c *AdminClient) CreateExternalAccountKey(provisionerName string, eakRequest *adminAPI.CreateExternalAccountKeyRequest) (*linkedca.EABKey, error) {
|
|
var retried bool
|
|
body, err := json.Marshal(eakRequest)
|
|
if err != nil {
|
|
return nil, errs.Wrap(http.StatusInternalServerError, err, "error marshaling request")
|
|
}
|
|
u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "acme/eab/", provisionerName)})
|
|
tok, err := c.generateAdminToken(u.Path)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error generating admin token")
|
|
}
|
|
req, err := http.NewRequest("POST", u.String(), bytes.NewReader(body))
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "create POST %s request failed", u)
|
|
}
|
|
req.Header.Add("Authorization", tok)
|
|
retry:
|
|
resp, err := c.client.Do(req)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "client POST %s failed", u)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
if !retried && c.retryOnError(resp) {
|
|
retried = true
|
|
goto retry
|
|
}
|
|
return nil, readAdminError(resp.Body)
|
|
}
|
|
var eabKey = new(linkedca.EABKey)
|
|
if err := readProtoJSON(resp.Body, eabKey); err != nil {
|
|
return nil, errors.Wrapf(err, "error reading %s", u)
|
|
}
|
|
return eabKey, nil
|
|
}
|
|
|
|
// RemoveExternalAccountKey performs the DELETE /admin/acme/eab/{prov}/{key_id} request to the CA.
|
|
func (c *AdminClient) RemoveExternalAccountKey(provisionerName, keyID string) error {
|
|
var retried bool
|
|
u := c.endpoint.ResolveReference(&url.URL{Path: path.Join(adminURLPrefix, "acme/eab", provisionerName, "/", keyID)})
|
|
tok, err := c.generateAdminToken(u.Path)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error generating admin token")
|
|
}
|
|
req, err := http.NewRequest("DELETE", u.String(), http.NoBody)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "create DELETE %s request failed", u)
|
|
}
|
|
req.Header.Add("Authorization", tok)
|
|
retry:
|
|
resp, err := c.client.Do(req)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "client DELETE %s failed", u)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
if !retried && c.retryOnError(resp) {
|
|
retried = true
|
|
goto retry
|
|
}
|
|
return readAdminError(resp.Body)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func readAdminError(r io.ReadCloser) error {
|
|
// TODO: not all errors can be read (i.e. 404); seems to be a bigger issue
|
|
defer r.Close()
|
|
adminErr := new(AdminClientError)
|
|
if err := json.NewDecoder(r).Decode(adminErr); err != nil {
|
|
return err
|
|
}
|
|
return adminErr
|
|
}
|