mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-21 05:55:42 +08:00
Zac Bergquist
44a6bb1933
Prefer the stdlib version of the experimental package.
Includes a depguard update to prevent future regressions,
as well as an e-ref update to appease depguard.
Generated with:
$ gofmt -w -r '"golang.org/x/exp/slices" -> "slices"' . && \
make fix-imports
113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package service
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import (
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"context"
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"net"
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"slices"
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"strings"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/lib/reversetunnelclient"
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"github.com/gravitational/teleport/lib/utils"
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"github.com/gravitational/teleport/lib/web/app"
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)
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type hostPolicyCheckerConfig struct {
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// publicAddrs is a list of pubic addresses to support acme for
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publicAddrs []utils.NetAddr
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// clt is used to get the list of registered applications
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clt app.Getter
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// tun is a reverse tunnel
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tun reversetunnelclient.Tunnel
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// clusterName is a name of this cluster
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clusterName string
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}
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type hostPolicyChecker struct {
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dnsNames []string
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cfg hostPolicyCheckerConfig
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}
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// checkHost approves getting certs for hosts specified in public_addr
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// and their subdomains, if there is a valid application name registered
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func (h *hostPolicyChecker) checkHost(ctx context.Context, host string) error {
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if ip := net.ParseIP(host); ip != nil {
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return trace.BadParameter(
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"with proxy_service.acme on, IP URL https://%v is not supported, use one of the domains in proxy_service.public_addr: %v",
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host, strings.Join(h.dnsNames, ","))
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}
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if slices.Contains(h.dnsNames, host) {
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return nil
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}
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_, _, err := app.ResolveFQDN(ctx, h.cfg.clt, h.cfg.tun, h.dnsNames, host)
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if err == nil {
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return nil
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}
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if trace.IsNotFound(err) {
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return trace.BadParameter(
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"acme can't get a cert for %v, there is no app with this name", host)
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}
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return trace.BadParameter(
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"acme can't get a cert for domain %v, add it to the proxy_service.public_addr, or use one of the domains: %v",
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host, strings.Join(h.dnsNames, ","))
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}
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func newHostPolicyChecker(cfg hostPolicyCheckerConfig) (*hostPolicyChecker, error) {
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dnsNames, err := cfg.CheckAndSetDefaults()
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return &hostPolicyChecker{
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dnsNames: dnsNames,
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cfg: cfg,
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}, nil
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}
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func (h *hostPolicyCheckerConfig) CheckAndSetDefaults() ([]string, error) {
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if h.clt == nil {
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return nil, trace.BadParameter("missing parameter clt")
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}
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if h.tun == nil {
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return nil, trace.BadParameter("missing parameter tun")
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}
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dnsNames := make([]string, 0, len(h.publicAddrs))
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for _, addr := range h.publicAddrs {
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host, err := utils.DNSName(addr.Addr)
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if err != nil {
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continue
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}
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dnsNames = append(dnsNames, host)
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}
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if len(dnsNames) == 0 {
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return nil, trace.BadParameter(
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"acme is enabled, set at least one valid DNS name in public_addr section of proxy_service")
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}
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return dnsNames, nil
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}
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