Merge pull request #3259 from ipfs/kevina/local-mode

Distinguish between Offline and Local Mode.

cmd/ipfs/daemon.go

@@ -332,6 +332,7 @@ func daemonFunc(req cmds.Request, res cmds.Response) {
 		res.SetError(err, cmds.ErrNormal)
 		return
 	}
+	node.SetLocal(false)
 
 	printSwarmAddrs(node)
 

cmd/ipfs/main.go

@@ -227,6 +227,7 @@ func (i *cmdInvocation) constructNodeFunc(ctx context.Context) func() (*core.Ipf
 		if err != nil {
 			return nil, err
 		}
+		n.SetLocal(true)
 		i.node = n
 		return i.node, nil
 	}

core/core.go

@@ -76,6 +76,7 @@ type mode int
 const (
 	// zero value is not a valid mode, must be explicitly set
 	invalidMode mode = iota
+	localMode
 	offlineMode
 	onlineMode
 )
@@ -120,6 +121,7 @@ type IpfsNode struct {
 	ctx  context.Context
 
 	mode mode
+	localModeSet bool
 }
 
 // Mounts defines what the node's mount state is. This should
@@ -404,6 +406,26 @@ func (n *IpfsNode) OnlineMode() bool {
 	}
 }
 
+func (n *IpfsNode) SetLocal(isLocal bool) {
+	if isLocal {
+		n.mode = localMode
+	}
+	n.localModeSet = true
+}
+
+func (n *IpfsNode) LocalMode() bool {
+	if !n.localModeSet {
+		// programmer error should not happen
+		panic("local mode not set")
+	}
+	switch n.mode {
+	case localMode:
+		return true
+	default:
+		return false
+	}
+}
+
 func (n *IpfsNode) Bootstrap(cfg BootstrapConfig) error {
 
 	// TODO what should return value be when in offlineMode?