575 lines
17 KiB
Go
575 lines
17 KiB
Go
package consul
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/hashicorp/consul/acl"
|
|
"github.com/hashicorp/consul/agent/consul/state"
|
|
"github.com/hashicorp/consul/agent/structs"
|
|
bexpr "github.com/hashicorp/go-bexpr"
|
|
"github.com/hashicorp/go-hclog"
|
|
"github.com/hashicorp/go-memdb"
|
|
"github.com/hashicorp/go-multierror"
|
|
"github.com/hashicorp/serf/serf"
|
|
)
|
|
|
|
// Internal endpoint is used to query the miscellaneous info that
|
|
// does not necessarily fit into the other systems. It is also
|
|
// used to hold undocumented APIs that users should not rely on.
|
|
type Internal struct {
|
|
srv *Server
|
|
logger hclog.Logger
|
|
}
|
|
|
|
// NodeInfo is used to retrieve information about a specific node.
|
|
func (m *Internal) NodeInfo(args *structs.NodeSpecificRequest,
|
|
reply *structs.IndexedNodeDump) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.NodeInfo", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
_, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
index, dump, err := state.NodeInfo(ws, args.Node, &args.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Index, reply.Dump = index, dump
|
|
return m.srv.filterACL(args.Token, reply)
|
|
})
|
|
}
|
|
|
|
// NodeDump is used to generate information about all of the nodes.
|
|
func (m *Internal) NodeDump(args *structs.DCSpecificRequest,
|
|
reply *structs.IndexedNodeDump) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.NodeDump", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
_, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
filter, err := bexpr.CreateFilter(args.Filter, nil, reply.Dump)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
index, dump, err := state.NodeDump(ws, &args.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Index, reply.Dump = index, dump
|
|
if err := m.srv.filterACL(args.Token, reply); err != nil {
|
|
return err
|
|
}
|
|
|
|
raw, err := filter.Execute(reply.Dump)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Dump = raw.(structs.NodeDump)
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (m *Internal) ServiceDump(args *structs.ServiceDumpRequest, reply *structs.IndexedNodesWithGateways) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.ServiceDump", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
_, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
filter, err := bexpr.CreateFilter(args.Filter, nil, reply.Nodes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
// Get, store, and filter nodes
|
|
maxIdx, nodes, err := state.ServiceDump(ws, args.ServiceKind, args.UseServiceKind, &args.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
reply.Nodes = nodes
|
|
|
|
if err := m.srv.filterACL(args.Token, &reply.Nodes); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Get, store, and filter gateway services
|
|
idx, gatewayServices, err := state.DumpGatewayServices(ws)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
reply.Gateways = gatewayServices
|
|
|
|
if idx > maxIdx {
|
|
maxIdx = idx
|
|
}
|
|
reply.Index = maxIdx
|
|
|
|
if err := m.srv.filterACL(args.Token, &reply.Gateways); err != nil {
|
|
return err
|
|
}
|
|
|
|
raw, err := filter.Execute(reply.Nodes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Nodes = raw.(structs.CheckServiceNodes)
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func (m *Internal) ServiceTopology(args *structs.ServiceSpecificRequest, reply *structs.IndexedServiceTopology) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.ServiceTopology", args, args, reply); done {
|
|
return err
|
|
}
|
|
if args.ServiceName == "" {
|
|
return fmt.Errorf("Must provide a service name")
|
|
}
|
|
|
|
var authzContext acl.AuthorizerContext
|
|
authz, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := m.srv.validateEnterpriseRequest(&args.EnterpriseMeta, false); err != nil {
|
|
return err
|
|
}
|
|
if authz != nil && authz.ServiceRead(args.ServiceName, &authzContext) != acl.Allow {
|
|
return acl.ErrPermissionDenied
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
defaultAllow := acl.Allow
|
|
if authz != nil {
|
|
defaultAllow = authz.IntentionDefaultAllow(nil)
|
|
}
|
|
|
|
index, topology, err := state.ServiceTopology(ws, args.Datacenter, args.ServiceName, args.ServiceKind, defaultAllow, &args.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Index = index
|
|
reply.ServiceTopology = topology
|
|
|
|
if err := m.srv.filterACL(args.Token, reply); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
})
|
|
}
|
|
|
|
// IntentionUpstreams returns the upstreams of a service. Upstreams are inferred from intentions.
|
|
// If intentions allow a connection from the target to some candidate service, the candidate service is considered
|
|
// an upstream of the target.
|
|
func (m *Internal) IntentionUpstreams(args *structs.ServiceSpecificRequest, reply *structs.IndexedServiceList) error {
|
|
// Exit early if Connect hasn't been enabled.
|
|
if !m.srv.config.ConnectEnabled {
|
|
return ErrConnectNotEnabled
|
|
}
|
|
if args.ServiceName == "" {
|
|
return fmt.Errorf("Must provide a service name")
|
|
}
|
|
if done, err := m.srv.ForwardRPC("Internal.IntentionUpstreams", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
authz, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := m.srv.validateEnterpriseRequest(&args.EnterpriseMeta, false); err != nil {
|
|
return err
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
defaultDecision := acl.Allow
|
|
if authz != nil {
|
|
defaultDecision = authz.IntentionDefaultAllow(nil)
|
|
}
|
|
|
|
sn := structs.NewServiceName(args.ServiceName, &args.EnterpriseMeta)
|
|
index, services, err := state.IntentionTopology(ws, sn, false, defaultDecision)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
reply.Index, reply.Services = index, services
|
|
return m.srv.filterACLWithAuthorizer(authz, reply)
|
|
})
|
|
}
|
|
|
|
// GatewayServiceNodes returns all the nodes for services associated with a gateway along with their gateway config
|
|
func (m *Internal) GatewayServiceDump(args *structs.ServiceSpecificRequest, reply *structs.IndexedServiceDump) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.GatewayServiceDump", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
// Verify the arguments
|
|
if args.ServiceName == "" {
|
|
return fmt.Errorf("Must provide gateway name")
|
|
}
|
|
|
|
var authzContext acl.AuthorizerContext
|
|
authz, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &args.EnterpriseMeta, &authzContext)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := m.srv.validateEnterpriseRequest(&args.EnterpriseMeta, false); err != nil {
|
|
return err
|
|
}
|
|
|
|
// We need read access to the gateway we're trying to find services for, so check that first.
|
|
if authz != nil && authz.ServiceRead(args.ServiceName, &authzContext) != acl.Allow {
|
|
return acl.ErrPermissionDenied
|
|
}
|
|
|
|
err = m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
var maxIdx uint64
|
|
idx, gatewayServices, err := state.GatewayServices(ws, args.ServiceName, &args.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if idx > maxIdx {
|
|
maxIdx = idx
|
|
}
|
|
|
|
// Loop over the gateway <-> serviceName mappings and fetch all service instances for each
|
|
var result structs.ServiceDump
|
|
for _, gs := range gatewayServices {
|
|
idx, instances, err := state.CheckServiceNodes(ws, gs.Service.Name, &gs.Service.EnterpriseMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if idx > maxIdx {
|
|
maxIdx = idx
|
|
}
|
|
for _, n := range instances {
|
|
svc := structs.ServiceInfo{
|
|
Node: n.Node,
|
|
Service: n.Service,
|
|
Checks: n.Checks,
|
|
GatewayService: gs,
|
|
}
|
|
result = append(result, &svc)
|
|
}
|
|
|
|
// Ensure we store the gateway <-> service mapping even if there are no instances of the service
|
|
if len(instances) == 0 {
|
|
svc := structs.ServiceInfo{
|
|
GatewayService: gs,
|
|
}
|
|
result = append(result, &svc)
|
|
}
|
|
}
|
|
reply.Index, reply.Dump = maxIdx, result
|
|
|
|
if err := m.srv.filterACL(args.Token, reply); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
})
|
|
|
|
return err
|
|
}
|
|
|
|
// Match returns the set of intentions that match the given source/destination.
|
|
func (m *Internal) GatewayIntentions(args *structs.IntentionQueryRequest, reply *structs.IndexedIntentions) error {
|
|
// Forward if necessary
|
|
if done, err := m.srv.ForwardRPC("Internal.GatewayIntentions", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
if len(args.Match.Entries) > 1 {
|
|
return fmt.Errorf("Expected 1 gateway name, got %d", len(args.Match.Entries))
|
|
}
|
|
|
|
// Get the ACL token for the request for the checks below.
|
|
var entMeta structs.EnterpriseMeta
|
|
var authzContext acl.AuthorizerContext
|
|
|
|
authz, err := m.srv.ResolveTokenAndDefaultMeta(args.Token, &entMeta, &authzContext)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if args.Match.Entries[0].Namespace == "" {
|
|
args.Match.Entries[0].Namespace = entMeta.NamespaceOrDefault()
|
|
}
|
|
if err := m.srv.validateEnterpriseIntentionNamespace(args.Match.Entries[0].Namespace, true); err != nil {
|
|
return fmt.Errorf("Invalid match entry namespace %q: %v", args.Match.Entries[0].Namespace, err)
|
|
}
|
|
|
|
// We need read access to the gateway we're trying to find intentions for, so check that first.
|
|
if authz != nil && authz.ServiceRead(args.Match.Entries[0].Name, &authzContext) != acl.Allow {
|
|
return acl.ErrPermissionDenied
|
|
}
|
|
|
|
return m.srv.blockingQuery(
|
|
&args.QueryOptions,
|
|
&reply.QueryMeta,
|
|
func(ws memdb.WatchSet, state *state.Store) error {
|
|
var maxIdx uint64
|
|
idx, gatewayServices, err := state.GatewayServices(ws, args.Match.Entries[0].Name, &entMeta)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if idx > maxIdx {
|
|
maxIdx = idx
|
|
}
|
|
|
|
// Loop over the gateway <-> serviceName mappings and fetch all intentions for each
|
|
seen := make(map[string]bool)
|
|
result := make(structs.Intentions, 0)
|
|
|
|
for _, gs := range gatewayServices {
|
|
entry := structs.IntentionMatchEntry{
|
|
Namespace: gs.Service.NamespaceOrDefault(),
|
|
Name: gs.Service.Name,
|
|
}
|
|
idx, intentions, err := state.IntentionMatchOne(ws, entry, structs.IntentionMatchDestination)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if idx > maxIdx {
|
|
maxIdx = idx
|
|
}
|
|
|
|
// Deduplicate wildcard intentions
|
|
for _, ixn := range intentions {
|
|
if !seen[ixn.ID] {
|
|
result = append(result, ixn)
|
|
seen[ixn.ID] = true
|
|
}
|
|
}
|
|
}
|
|
|
|
reply.Index, reply.Intentions = maxIdx, result
|
|
if reply.Intentions == nil {
|
|
reply.Intentions = make(structs.Intentions, 0)
|
|
}
|
|
|
|
if err := m.srv.filterACL(args.Token, reply); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
},
|
|
)
|
|
}
|
|
|
|
// EventFire is a bit of an odd endpoint, but it allows for a cross-DC RPC
|
|
// call to fire an event. The primary use case is to enable user events being
|
|
// triggered in a remote DC.
|
|
func (m *Internal) EventFire(args *structs.EventFireRequest,
|
|
reply *structs.EventFireResponse) error {
|
|
if done, err := m.srv.ForwardRPC("Internal.EventFire", args, args, reply); done {
|
|
return err
|
|
}
|
|
|
|
// Check ACLs
|
|
rule, err := m.srv.ResolveToken(args.Token)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if rule != nil && rule.EventWrite(args.Name, nil) != acl.Allow {
|
|
accessorID := m.aclAccessorID(args.Token)
|
|
m.logger.Warn("user event blocked by ACLs", "event", args.Name, "accessorID", accessorID)
|
|
return acl.ErrPermissionDenied
|
|
}
|
|
|
|
// Set the query meta data
|
|
m.srv.setQueryMeta(&reply.QueryMeta)
|
|
|
|
// Add the consul prefix to the event name
|
|
eventName := userEventName(args.Name)
|
|
|
|
// Fire the event on all LAN segments
|
|
segments := m.srv.LANSegments()
|
|
var errs error
|
|
for name, segment := range segments {
|
|
err := segment.UserEvent(eventName, args.Payload, false)
|
|
if err != nil {
|
|
err = fmt.Errorf("error broadcasting event to segment %q: %v", name, err)
|
|
errs = multierror.Append(errs, err)
|
|
}
|
|
}
|
|
return errs
|
|
}
|
|
|
|
// KeyringOperation will query the WAN and LAN gossip keyrings of all nodes.
|
|
func (m *Internal) KeyringOperation(
|
|
args *structs.KeyringRequest,
|
|
reply *structs.KeyringResponses) error {
|
|
|
|
// Error aggressively to be clear about LocalOnly behavior
|
|
if args.LocalOnly && args.Operation != structs.KeyringList {
|
|
return fmt.Errorf("argument error: LocalOnly can only be used for List operations")
|
|
}
|
|
|
|
// Check ACLs
|
|
identity, rule, err := m.srv.ResolveTokenToIdentityAndAuthorizer(args.Token)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := m.srv.validateEnterpriseToken(identity); err != nil {
|
|
return err
|
|
}
|
|
if rule != nil {
|
|
switch args.Operation {
|
|
case structs.KeyringList:
|
|
if rule.KeyringRead(nil) != acl.Allow {
|
|
return fmt.Errorf("Reading keyring denied by ACLs")
|
|
}
|
|
case structs.KeyringInstall:
|
|
fallthrough
|
|
case structs.KeyringUse:
|
|
fallthrough
|
|
case structs.KeyringRemove:
|
|
if rule.KeyringWrite(nil) != acl.Allow {
|
|
return fmt.Errorf("Modifying keyring denied due to ACLs")
|
|
}
|
|
default:
|
|
panic("Invalid keyring operation")
|
|
}
|
|
}
|
|
|
|
if args.LocalOnly || args.Forwarded || m.srv.serfWAN == nil {
|
|
// Handle operations that are localOnly, already forwarded or
|
|
// there is no serfWAN. If any of this is the case this
|
|
// operation shouldn't go out to other dcs or WAN pool.
|
|
reply.Responses = append(reply.Responses, m.executeKeyringOpLAN(args)...)
|
|
} else {
|
|
// Handle not already forwarded, non-local operations.
|
|
|
|
// Marking this as forwarded because this is what we are about
|
|
// to do. Prevents the same message from being fowarded by
|
|
// other servers.
|
|
args.Forwarded = true
|
|
reply.Responses = append(reply.Responses, m.executeKeyringOpWAN(args))
|
|
reply.Responses = append(reply.Responses, m.executeKeyringOpLAN(args)...)
|
|
|
|
dcs := m.srv.router.GetRemoteDatacenters(m.srv.config.Datacenter)
|
|
responses, err := m.srv.keyringRPCs("Internal.KeyringOperation", args, dcs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
reply.Add(responses)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *Internal) executeKeyringOpLAN(args *structs.KeyringRequest) []*structs.KeyringResponse {
|
|
responses := []*structs.KeyringResponse{}
|
|
segments := m.srv.LANSegments()
|
|
for name, segment := range segments {
|
|
mgr := segment.KeyManager()
|
|
serfResp, err := m.executeKeyringOpMgr(mgr, args)
|
|
resp := translateKeyResponseToKeyringResponse(serfResp, m.srv.config.Datacenter, err)
|
|
resp.Segment = name
|
|
responses = append(responses, &resp)
|
|
}
|
|
return responses
|
|
}
|
|
|
|
func (m *Internal) executeKeyringOpWAN(args *structs.KeyringRequest) *structs.KeyringResponse {
|
|
mgr := m.srv.KeyManagerWAN()
|
|
serfResp, err := m.executeKeyringOpMgr(mgr, args)
|
|
resp := translateKeyResponseToKeyringResponse(serfResp, m.srv.config.Datacenter, err)
|
|
resp.WAN = true
|
|
return &resp
|
|
}
|
|
|
|
func translateKeyResponseToKeyringResponse(keyresponse *serf.KeyResponse, datacenter string, err error) structs.KeyringResponse {
|
|
resp := structs.KeyringResponse{
|
|
Datacenter: datacenter,
|
|
Messages: keyresponse.Messages,
|
|
Keys: keyresponse.Keys,
|
|
PrimaryKeys: keyresponse.PrimaryKeys,
|
|
NumNodes: keyresponse.NumNodes,
|
|
}
|
|
if err != nil {
|
|
resp.Error = err.Error()
|
|
}
|
|
return resp
|
|
}
|
|
|
|
// executeKeyringOpMgr executes the appropriate keyring-related function based on
|
|
// the type of keyring operation in the request. It takes the KeyManager as an
|
|
// argument, so it can handle any operation for either LAN or WAN pools.
|
|
func (m *Internal) executeKeyringOpMgr(
|
|
mgr *serf.KeyManager,
|
|
args *structs.KeyringRequest,
|
|
) (*serf.KeyResponse, error) {
|
|
var serfResp *serf.KeyResponse
|
|
var err error
|
|
|
|
opts := &serf.KeyRequestOptions{RelayFactor: args.RelayFactor}
|
|
switch args.Operation {
|
|
case structs.KeyringList:
|
|
serfResp, err = mgr.ListKeysWithOptions(opts)
|
|
case structs.KeyringInstall:
|
|
serfResp, err = mgr.InstallKeyWithOptions(args.Key, opts)
|
|
case structs.KeyringUse:
|
|
serfResp, err = mgr.UseKeyWithOptions(args.Key, opts)
|
|
case structs.KeyringRemove:
|
|
serfResp, err = mgr.RemoveKeyWithOptions(args.Key, opts)
|
|
}
|
|
|
|
return serfResp, err
|
|
}
|
|
|
|
// aclAccessorID is used to convert an ACLToken's secretID to its accessorID for non-
|
|
// critical purposes, such as logging. Therefore we interpret all errors as empty-string
|
|
// so we can safely log it without handling non-critical errors at the usage site.
|
|
func (m *Internal) aclAccessorID(secretID string) string {
|
|
_, ident, err := m.srv.ResolveIdentityFromToken(secretID)
|
|
if acl.IsErrNotFound(err) {
|
|
return ""
|
|
}
|
|
if err != nil {
|
|
m.logger.Debug("non-critical error resolving acl token accessor for logging", "error", err)
|
|
return ""
|
|
}
|
|
if ident == nil {
|
|
return ""
|
|
}
|
|
return ident.ID()
|
|
}
|