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provisioner.go
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/
provisioner.go
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package api
import (
"fmt"
"net/http"
"github.com/go-chi/chi"
"go.step.sm/crypto/sshutil"
"go.step.sm/crypto/x509util"
"go.step.sm/linkedca"
"github.com/smallstep/certificates/api"
"github.com/smallstep/certificates/api/read"
"github.com/smallstep/certificates/api/render"
"github.com/smallstep/certificates/authority"
"github.com/smallstep/certificates/authority/admin"
"github.com/smallstep/certificates/authority/provisioner"
"github.com/smallstep/certificates/errs"
)
// GetProvisionersResponse is the type for GET /admin/provisioners responses.
type GetProvisionersResponse struct {
Provisioners provisioner.List `json:"provisioners"`
NextCursor string `json:"nextCursor"`
}
// GetProvisioner returns the requested provisioner, or an error.
func GetProvisioner(w http.ResponseWriter, r *http.Request) {
var (
p provisioner.Interface
err error
)
ctx := r.Context()
id := r.URL.Query().Get("id")
name := chi.URLParam(r, "name")
auth := mustAuthority(ctx)
db := admin.MustFromContext(ctx)
if len(id) > 0 {
if p, err = auth.LoadProvisionerByID(id); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner %s", id))
return
}
} else {
if p, err = auth.LoadProvisionerByName(name); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner %s", name))
return
}
}
prov, err := db.GetProvisioner(ctx, p.GetID())
if err != nil {
render.Error(w, err)
return
}
render.ProtoJSON(w, prov)
}
// GetProvisioners returns the given segment of provisioners associated with the authority.
func GetProvisioners(w http.ResponseWriter, r *http.Request) {
cursor, limit, err := api.ParseCursor(r)
if err != nil {
render.Error(w, admin.WrapError(admin.ErrorBadRequestType, err,
"error parsing cursor and limit from query params"))
return
}
p, next, err := mustAuthority(r.Context()).GetProvisioners(cursor, limit)
if err != nil {
render.Error(w, errs.InternalServerErr(err))
return
}
render.JSON(w, &GetProvisionersResponse{
Provisioners: p,
NextCursor: next,
})
}
// CreateProvisioner creates a new prov.
func CreateProvisioner(w http.ResponseWriter, r *http.Request) {
var prov = new(linkedca.Provisioner)
if err := read.ProtoJSON(r.Body, prov); err != nil {
render.Error(w, err)
return
}
// TODO: Validate inputs
if err := authority.ValidateClaims(prov.Claims); err != nil {
render.Error(w, err)
return
}
// validate the templates and template data
if err := validateTemplates(prov.X509Template, prov.SshTemplate); err != nil {
render.Error(w, admin.WrapError(admin.ErrorBadRequestType, err, "invalid template"))
return
}
if err := mustAuthority(r.Context()).StoreProvisioner(r.Context(), prov); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error storing provisioner %s", prov.Name))
return
}
render.ProtoJSONStatus(w, prov, http.StatusCreated)
}
// DeleteProvisioner deletes a provisioner.
func DeleteProvisioner(w http.ResponseWriter, r *http.Request) {
var (
p provisioner.Interface
err error
)
id := r.URL.Query().Get("id")
name := chi.URLParam(r, "name")
auth := mustAuthority(r.Context())
if len(id) > 0 {
if p, err = auth.LoadProvisionerByID(id); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner %s", id))
return
}
} else {
if p, err = auth.LoadProvisionerByName(name); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner %s", name))
return
}
}
if err := auth.RemoveProvisioner(r.Context(), p.GetID()); err != nil {
render.Error(w, admin.WrapErrorISE(err, "error removing provisioner %s", p.GetName()))
return
}
render.JSON(w, &DeleteResponse{Status: "ok"})
}
// UpdateProvisioner updates an existing prov.
func UpdateProvisioner(w http.ResponseWriter, r *http.Request) {
var nu = new(linkedca.Provisioner)
if err := read.ProtoJSON(r.Body, nu); err != nil {
render.Error(w, err)
return
}
ctx := r.Context()
name := chi.URLParam(r, "name")
auth := mustAuthority(ctx)
db := admin.MustFromContext(ctx)
p, err := auth.LoadProvisionerByName(name)
if err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner from cached configuration '%s'", name))
return
}
old, err := db.GetProvisioner(r.Context(), p.GetID())
if err != nil {
render.Error(w, admin.WrapErrorISE(err, "error loading provisioner from db '%s'", p.GetID()))
return
}
if nu.Id != old.Id {
render.Error(w, admin.NewErrorISE("cannot change provisioner ID"))
return
}
if nu.Type != old.Type {
render.Error(w, admin.NewErrorISE("cannot change provisioner type"))
return
}
if nu.AuthorityId != old.AuthorityId {
render.Error(w, admin.NewErrorISE("cannot change provisioner authorityID"))
return
}
if !nu.CreatedAt.AsTime().Equal(old.CreatedAt.AsTime()) {
render.Error(w, admin.NewErrorISE("cannot change provisioner createdAt"))
return
}
if !nu.DeletedAt.AsTime().Equal(old.DeletedAt.AsTime()) {
render.Error(w, admin.NewErrorISE("cannot change provisioner deletedAt"))
return
}
// TODO: Validate inputs
if err := authority.ValidateClaims(nu.Claims); err != nil {
render.Error(w, err)
return
}
// validate the templates and template data
if err := validateTemplates(nu.X509Template, nu.SshTemplate); err != nil {
render.Error(w, admin.WrapError(admin.ErrorBadRequestType, err, "invalid template"))
return
}
if err := auth.UpdateProvisioner(r.Context(), nu); err != nil {
render.Error(w, err)
return
}
render.ProtoJSON(w, nu)
}
// validateTemplates validates the X.509 and SSH templates and template data if set.
func validateTemplates(x509, ssh *linkedca.Template) error {
if x509 != nil {
if len(x509.Template) > 0 {
if err := x509util.ValidateTemplate(x509.Template); err != nil {
return fmt.Errorf("invalid X.509 template: %w", err)
}
}
if len(x509.Data) > 0 {
if err := x509util.ValidateTemplateData(x509.Data); err != nil {
return fmt.Errorf("invalid X.509 template data: %w", err)
}
}
}
if ssh != nil {
if len(ssh.Template) > 0 {
if err := sshutil.ValidateTemplate(ssh.Template); err != nil {
return fmt.Errorf("invalid SSH template: %w", err)
}
}
if len(ssh.Data) > 0 {
if err := sshutil.ValidateTemplateData(ssh.Data); err != nil {
return fmt.Errorf("invalid SSH template data: %w", err)
}
}
}
return nil
}