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acl: remove many instances of authz == nil

This commit is contained in:
Daniel Nephin 2021-07-30 13:51:57 -04:00
parent b8ae00c23b
commit f497d5ab30
4 changed files with 27 additions and 43 deletions
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42
agent/consul/acl_endpoint.go
View File

@ -293,7 +293,7 @@ func (a *ACL) TokenRead(args *structs.ACLTokenGetRequest, reply *structs.ACLToke
// secrets will be redacted // secrets will be redacted
if authz, err = a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err = a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
} }
@ -358,7 +358,7 @@ func (a *ACL) TokenClone(args *structs.ACLTokenSetRequest, reply *structs.ACLTok
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.ACLToken.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.ACLToken.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -429,7 +429,7 @@ func (a *ACL) TokenSet(args *structs.ACLTokenSetRequest, reply *structs.ACLToken
var authzContext acl.AuthorizerContext var authzContext acl.AuthorizerContext
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.ACLToken.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.ACLToken.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -835,7 +835,7 @@ func (a *ACL) TokenDelete(args *structs.ACLTokenDeleteRequest, reply *string) er
var authzContext acl.AuthorizerContext var authzContext acl.AuthorizerContext
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -924,7 +924,7 @@ func (a *ACL) TokenList(args *structs.ACLTokenListRequest, reply *structs.ACLTok
// merge the token default meta into the requests meta // merge the token default meta into the requests meta
args.EnterpriseMeta.Merge(&requestMeta) args.EnterpriseMeta.Merge(&requestMeta)
args.EnterpriseMeta.FillAuthzContext(&authzContext) args.EnterpriseMeta.FillAuthzContext(&authzContext)
if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1035,7 +1035,7 @@ func (a *ACL) PolicyRead(args *structs.ACLPolicyGetRequest, reply *structs.ACLPo
var authzContext acl.AuthorizerContext var authzContext acl.AuthorizerContext
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1115,7 +1115,7 @@ func (a *ACL) PolicySet(args *structs.ACLPolicySetRequest, reply *structs.ACLPol
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.Policy.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.Policy.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1246,7 +1246,7 @@ func (a *ACL) PolicyDelete(args *structs.ACLPolicyDeleteRequest, reply *string)
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1297,7 +1297,7 @@ func (a *ACL) PolicyList(args *structs.ACLPolicyListRequest, reply *structs.ACLP
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1469,7 +1469,7 @@ func (a *ACL) RoleRead(args *structs.ACLRoleGetRequest, reply *structs.ACLRoleRe
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1549,7 +1549,7 @@ func (a *ACL) RoleSet(args *structs.ACLRoleSetRequest, reply *structs.ACLRole) e
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.Role.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.Role.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1707,7 +1707,7 @@ func (a *ACL) RoleDelete(args *structs.ACLRoleDeleteRequest, reply *string) erro
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1754,7 +1754,7 @@ func (a *ACL) RoleList(args *structs.ACLRoleListRequest, reply *structs.ACLRoleL
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1853,7 +1853,7 @@ func (a *ACL) BindingRuleRead(args *structs.ACLBindingRuleGetRequest, reply *str
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -1894,7 +1894,7 @@ func (a *ACL) BindingRuleSet(args *structs.ACLBindingRuleSetRequest, reply *stru
// Verify token is permitted to modify ACLs // Verify token is permitted to modify ACLs
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.BindingRule.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.BindingRule.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2023,7 +2023,7 @@ func (a *ACL) BindingRuleDelete(args *structs.ACLBindingRuleDeleteRequest, reply
// Verify token is permitted to modify ACLs // Verify token is permitted to modify ACLs
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2071,7 +2071,7 @@ func (a *ACL) BindingRuleList(args *structs.ACLBindingRuleListRequest, reply *st
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2110,7 +2110,7 @@ func (a *ACL) AuthMethodRead(args *structs.ACLAuthMethodGetRequest, reply *struc
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2155,7 +2155,7 @@ func (a *ACL) AuthMethodSet(args *structs.ACLAuthMethodSetRequest, reply *struct
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.AuthMethod.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.AuthMethod.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2267,7 +2267,7 @@ func (a *ACL) AuthMethodDelete(args *structs.ACLAuthMethodDeleteRequest, reply *
if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil { if authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext); err != nil {
return err return err
} else if authz == nil || authz.ACLWrite(&authzContext) != acl.Allow { } else if authz.ACLWrite(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -2321,7 +2321,7 @@ func (a *ACL) AuthMethodList(args *structs.ACLAuthMethodListRequest, reply *stru
authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext) authz, err := a.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
if err != nil { if err != nil {
return err return err
} else if authz == nil || authz.ACLRead(&authzContext) != acl.Allow { } else if authz.ACLRead(&authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }

8
agent/consul/kvs_endpoint.go
View File

@ -157,7 +157,7 @@ func (k *KVS) Get(args *structs.KeyRequest, reply *structs.IndexedDirEntries) er
if err != nil { if err != nil {
return err return err
} }
if authz != nil && authz.KeyRead(args.Key, &authzContext) != acl.Allow { if authz.KeyRead(args.Key, &authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -194,7 +194,7 @@ func (k *KVS) List(args *structs.KeyRequest, reply *structs.IndexedDirEntries) e
return err return err
} }
if authz != nil && k.srv.config.ACLEnableKeyListPolicy && authz.KeyList(args.Key, &authzContext) != acl.Allow { if k.srv.config.ACLEnableKeyListPolicy && authz.KeyList(args.Key, &authzContext) != acl.Allow {
return acl.ErrPermissionDenied return acl.ErrPermissionDenied
} }
@ -206,9 +206,7 @@ func (k *KVS) List(args *structs.KeyRequest, reply *structs.IndexedDirEntries) e
if err != nil { if err != nil {
return err return err
} }
if authz != nil { ent = FilterDirEnt(authz, ent)
ent = FilterDirEnt(authz, ent)
}
if len(ent) == 0 { if len(ent) == 0 {
// Must provide non-zero index to prevent blocking // Must provide non-zero index to prevent blocking

14
agent/rpc/subscribe/subscribe.go
View File

@ -75,9 +75,7 @@ func (h *Server) Subscribe(req *pbsubscribe.SubscribeRequest, serverStream pbsub
return err return err
} }
var ok bool if !event.Payload.HasReadPermission(authz) {
event, ok = filterByAuth(authz, event)
if !ok {
continue continue
} }
@ -126,16 +124,6 @@ func forwardToDC(
} }
} }
// filterByAuth to only those Events allowed by the acl token.
func filterByAuth(authz acl.Authorizer, event stream.Event) (stream.Event, bool) {
// authz will be nil when ACLs are disabled
if authz == nil {
return event, true
}
return event, event.Payload.HasReadPermission(authz)
}
func newEventFromStreamEvent(event stream.Event) *pbsubscribe.Event { func newEventFromStreamEvent(event stream.Event) *pbsubscribe.Event {
e := &pbsubscribe.Event{Index: event.Index} e := &pbsubscribe.Event{Index: event.Index}
switch { switch {

6
agent/structs/intention.go
View File

@ -298,9 +298,6 @@ func (x *Intention) Validate() error {
} }
func (ixn *Intention) CanRead(authz acl.Authorizer) bool { func (ixn *Intention) CanRead(authz acl.Authorizer) bool {
if authz == nil {
return true
}
var authzContext acl.AuthorizerContext var authzContext acl.AuthorizerContext
// Read access on either end of the intention allows you to read the // Read access on either end of the intention allows you to read the
@ -325,11 +322,12 @@ func (ixn *Intention) CanRead(authz acl.Authorizer) bool {
} }
func (ixn *Intention) CanWrite(authz acl.Authorizer) bool { func (ixn *Intention) CanWrite(authz acl.Authorizer) bool {
if authz == nil || authz == acl.ManageAll() { if authz == acl.ManageAll() {
return true return true
} }
var authzContext acl.AuthorizerContext var authzContext acl.AuthorizerContext
// TODO: this line seems to require checking 'authz == acl.ManageAll()' above
if ixn.DestinationName == "" { if ixn.DestinationName == "" {
return false return false
} }