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Add feature flag for SSH, and warning

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Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2022-11-24 16:35:55 +01:00 committed by Kristoffer Dalby
parent 91ed6e2197
commit c6d31747f7
1 changed files with 15 additions and 8 deletions
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23
acls.go
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@ -15,6 +15,7 @@ import (
"github.com/rs/zerolog/log"
"github.com/tailscale/hujson"
"gopkg.in/yaml.v3"
"tailscale.com/envknob"
"tailscale.com/tailcfg"
)
@ -55,6 +56,8 @@ const (
ProtocolFC = 133 // Fibre Channel
)
var featureEnableSSH = envknob.RegisterBool("HEADSCALE_FEATURE_SSH")
// LoadACLPolicy loads the ACL policy from the specify path, and generates the ACL rules.
func (h *Headscale) LoadACLPolicy(path string) error {
log.Debug().
@ -121,15 +124,19 @@ func (h *Headscale) UpdateACLRules() error {
log.Trace().Interface("ACL", rules).Msg("ACL rules generated")
h.aclRules = rules
sshRules, err := h.generateSSHRules()
if err != nil {
return err
if featureEnableSSH() {
sshRules, err := h.generateSSHRules()
if err != nil {
return err
}
log.Trace().Interface("SSH", sshRules).Msg("SSH rules generated")
if h.sshPolicy == nil {
h.sshPolicy = &tailcfg.SSHPolicy{}
}
h.sshPolicy.Rules = sshRules
} else if h.aclPolicy != nil && len(h.aclPolicy.SSHs) > 0 {
log.Info().Msg("SSH ACLs has been defined, but HEADSCALE_FEATURE_SSH is not enabled, this is a unstable feature, check docs before activating")
}
log.Trace().Interface("SSH", sshRules).Msg("SSH rules generated")
if h.sshPolicy == nil {
h.sshPolicy = &tailcfg.SSHPolicy{}
}
h.sshPolicy.Rules = sshRules
return nil
}