Update - modify hub to support multiple networks. (#4)

Co-authored-by: jdl <jdl@desktop>
Reviewed-on: #4

hub/form.go

@@ -0,0 +1,42 @@
+package hub
+
+import (
+	"net/url"
+	"vppn/hub/api"
+
+	"git.crumpington.com/lib/go/webutil"
+)
+
+func (app *App) formGetNetwork(form url.Values) (*api.Network, error) {
+	var id int64
+	if err := webutil.NewFormScanner(form).Scan("NetworkID", &id).Error(); err != nil {
+		return nil, err
+	}
+
+	return app.api.Network_Get(id)
+}
+
+func (app *App) formGetNetworkPeers(form url.Values) (*api.Network, []*api.Peer, error) {
+	n, err := app.formGetNetwork(form)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	peers, err := app.api.Peer_List(n.NetworkID)
+	return n, peers, err
+}
+
+func (app *App) formGetPeer(form url.Values) (*api.Network, *api.Peer, error) {
+	net, err := app.formGetNetwork(form)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var ip byte
+	if err := webutil.NewFormScanner(form).Scan("PeerIP", &ip).Error(); err != nil {
+		return nil, nil, err
+	}
+
+	peer, err := app.api.Peer_Get(net.NetworkID, ip)
+	return net, peer, err
+}