m6220-proxy: start fixing paths
diff --git a/go/svc/m6220-proxy/main.go b/go/svc/m6220-proxy/main.go
new file mode 100644
index 0000000..5e92ac1
--- /dev/null
+++ b/go/svc/m6220-proxy/main.go
@@ -0,0 +1,277 @@
+package main
+
+import (
+ "context"
+ "flag"
+ "fmt"
+ "reflect"
+ "strconv"
+ "strings"
+
+ "code.hackerspace.pl/hscloud/go/mirko"
+ "github.com/golang/glog"
+ "github.com/ziutek/telnet"
+ "google.golang.org/grpc/codes"
+ "google.golang.org/grpc/status"
+
+ tpb "code.hackerspace.pl/hscloud/go/proto/control"
+ pb "code.hackerspace.pl/hscloud/go/svc/m6220-proxy/proto"
+)
+
+var (
+ flagSwitchAddress string
+ flagSwitchUsername string
+ flagSwitchPassword string
+)
+
+func init() {
+ flag.Set("logtostderr", "true")
+}
+
+type service struct {
+ connectionSemaphore chan int
+}
+
+func (s *service) connect() (*cliClient, error) {
+ s.connectionSemaphore <- 1
+ conn, err := telnet.Dial("tcp", flagSwitchAddress)
+ if err != nil {
+ <-s.connectionSemaphore
+ return nil, err
+ }
+
+ cli := newCliClient(conn, flagSwitchUsername, flagSwitchPassword)
+ return cli, nil
+}
+
+func (s *service) disconnect() {
+ <-s.connectionSemaphore
+}
+
+func (s *service) RunCommand(ctx context.Context, req *pb.RunCommandRequest) (*pb.RunCommandResponse, error) {
+ if req.Command == "" {
+ return nil, status.Error(codes.InvalidArgument, "command cannot be null")
+ }
+
+ cli, err := s.connect()
+ if err != nil {
+ return nil, status.Error(codes.Unavailable, "could not connect to switch")
+ }
+ defer s.disconnect()
+
+ lines, effective, err := cli.runCommand(ctx, req.Command)
+ if err != nil {
+ return nil, err
+ }
+ res := &pb.RunCommandResponse{
+ EffectiveCommand: effective,
+ Lines: lines,
+ }
+ return res, nil
+}
+
+func (s *service) parseInterfaceStatus(res *tpb.GetPortsResponse, lines []string) error {
+ if len(lines) < 4 {
+ return fmt.Errorf("need at least 4 lines of output, got %d", len(lines))
+ }
+ if lines[0] != "" {
+ return fmt.Errorf("expected first line to be empty, is %q", lines[0])
+ }
+ header1parts := strings.Fields(lines[1])
+ if want := []string{"Port", "Description", "Duplex", "Speed", "Neg", "Link", "Flow", "Control"}; !reflect.DeepEqual(want, header1parts) {
+ return fmt.Errorf("expected header1 to be %v, got %v", want, header1parts)
+ }
+
+ header2parts := strings.Fields(lines[2])
+ if want := []string{"State", "Status"}; !reflect.DeepEqual(want, header2parts) {
+ return fmt.Errorf("expected header2 to be %v, got %v", want, header2parts)
+ }
+
+ if lines[3][0] != '-' {
+ return fmt.Errorf("expected header3 to start with -, got %q", lines[3])
+ }
+
+ for _, line := range lines[4:] {
+ parts := strings.Fields(line)
+ if len(parts) < 6 {
+ break
+ }
+ portName := parts[0]
+ if strings.HasPrefix(portName, "Gi") && strings.HasPrefix(portName, "Ti") {
+ break
+ }
+
+ speedStr := parts[len(parts)-4]
+ stateStr := parts[len(parts)-2]
+
+ port := &tpb.SwitchPort{
+ Name: portName,
+ }
+ if speedStr == "100" {
+ port.Speed = tpb.SwitchPort_SPEED_100M
+ } else if speedStr == "1000" {
+ port.Speed = tpb.SwitchPort_SPEED_1G
+ } else if speedStr == "10000" {
+ port.Speed = tpb.SwitchPort_SPEED_10G
+ }
+ if stateStr == "Up" {
+ port.LinkState = tpb.SwitchPort_LINKSTATE_UP
+ } else if stateStr == "Down" {
+ port.LinkState = tpb.SwitchPort_LINKSTATE_DOWN
+ }
+
+ res.Ports = append(res.Ports, port)
+ }
+
+ return nil
+}
+
+func (s *service) parseInterfaceConfig(port *tpb.SwitchPort, lines []string) error {
+ glog.Infof("%+v", port)
+ for _, line := range lines {
+ glog.Infof("%s: %q", port.Name, line)
+ parts := strings.Fields(line)
+ if len(parts) < 1 {
+ continue
+ }
+
+ if len(parts) >= 2 && parts[0] == "switchport" {
+ if parts[1] == "mode" {
+ if port.PortMode != tpb.SwitchPort_PORTMODE_INVALID {
+ return fmt.Errorf("redefinition of switchport mode")
+ }
+ if parts[2] == "access" {
+ port.PortMode = tpb.SwitchPort_PORTMODE_SWITCHPORT_UNTAGGED
+ } else if parts[2] == "trunk" {
+ port.PortMode = tpb.SwitchPort_PORTMODE_SWITCHPORT_TAGGED
+ } else if parts[2] == "general" {
+ port.PortMode = tpb.SwitchPort_PORTMODE_SWITCHPORT_GENERIC
+ } else {
+ port.PortMode = tpb.SwitchPort_PORTMODE_MANGLED
+ }
+ }
+
+ if parts[1] == "access" {
+ if port.PortMode == tpb.SwitchPort_PORTMODE_INVALID {
+ port.PortMode = tpb.SwitchPort_PORTMODE_SWITCHPORT_UNTAGGED
+ }
+ if len(parts) > 3 && parts[2] == "vlan" {
+ vlan, err := strconv.Atoi(parts[3])
+ if err != nil {
+ return fmt.Errorf("invalid vlan: %q", parts[3])
+ }
+ port.VlanNative = int32(vlan)
+ }
+ }
+
+ if parts[1] == "trunk" {
+ if len(parts) >= 5 && parts[2] == "allowed" && parts[3] == "vlan" {
+ vlans := strings.Split(parts[4], ",")
+ for _, vlan := range vlans {
+ vlanNum, err := strconv.Atoi(vlan)
+ if err != nil {
+ return fmt.Errorf("invalid vlan: %q", parts[3])
+ }
+ port.VlanTagged = append(port.VlanTagged, int32(vlanNum))
+ }
+ }
+ }
+ } else if len(parts) >= 2 && parts[0] == "mtu" {
+ mtu, err := strconv.Atoi(parts[1])
+ if err != nil {
+ return fmt.Errorf("invalid mtu: %q", parts[3])
+ }
+ port.Mtu = int32(mtu)
+ } else if len(parts) >= 2 && parts[0] == "spanning-tree" && parts[1] == "portfast" {
+ port.SpanningTreeMode = tpb.SwitchPort_SPANNING_TREE_MODE_PORTFAST
+ }
+ }
+
+ // no mode -> access
+ if port.PortMode == tpb.SwitchPort_PORTMODE_INVALID {
+ port.PortMode = tpb.SwitchPort_PORTMODE_SWITCHPORT_UNTAGGED
+ }
+
+ // apply defaults
+ if port.Mtu == 0 {
+ port.Mtu = 1500
+ }
+ if port.SpanningTreeMode == tpb.SwitchPort_SPANNING_TREE_MODE_INVALID {
+ port.SpanningTreeMode = tpb.SwitchPort_SPANNING_TREE_MODE_AUTO_PORTFAST
+ }
+
+ // sanitize
+ if port.PortMode == tpb.SwitchPort_PORTMODE_SWITCHPORT_UNTAGGED {
+ port.VlanTagged = []int32{}
+ port.Prefixes = []string{}
+ if port.VlanNative == 0 {
+ port.VlanNative = 1
+ }
+ } else if port.PortMode == tpb.SwitchPort_PORTMODE_SWITCHPORT_TAGGED {
+ port.VlanNative = 0
+ port.Prefixes = []string{}
+ } else if port.PortMode == tpb.SwitchPort_PORTMODE_SWITCHPORT_GENERIC {
+ port.Prefixes = []string{}
+ if port.VlanNative == 0 {
+ port.VlanNative = 1
+ }
+ }
+ return nil
+}
+
+func (s *service) GetPorts(ctx context.Context, req *tpb.GetPortsRequest) (*tpb.GetPortsResponse, error) {
+ cli, err := s.connect()
+ if err != nil {
+ return nil, status.Error(codes.Unavailable, "could not connect to switch")
+ }
+ defer s.disconnect()
+ res := &tpb.GetPortsResponse{}
+
+ statusLines, _, err := cli.runCommand(ctx, "show interface status")
+ if err != nil {
+ return nil, status.Error(codes.Unavailable, "could not get interface status from switch")
+ }
+
+ err = s.parseInterfaceStatus(res, statusLines)
+ if err != nil {
+ return nil, status.Errorf(codes.Unavailable, "could not parse interface status from switch: %v", err)
+ }
+
+ for _, port := range res.Ports {
+ configLines, _, err := cli.runCommand(ctx, "show run interface "+port.Name)
+ if err != nil {
+ return nil, status.Error(codes.Unavailable, "could not get interface config from switch")
+ }
+ err = s.parseInterfaceConfig(port, configLines)
+ if err != nil {
+ return nil, status.Errorf(codes.Unavailable, "could not parse interface config from switch: %v", err)
+ }
+ }
+
+ return res, nil
+}
+
+func main() {
+ flag.StringVar(&flagSwitchAddress, "switch_address", "127.0.0.1:23", "Telnet address of M6220")
+ flag.StringVar(&flagSwitchUsername, "switch_username", "admin", "Switch login username")
+ flag.StringVar(&flagSwitchPassword, "switch_password", "admin", "Switch login password")
+ flag.Parse()
+
+ s := &service{
+ connectionSemaphore: make(chan int, 1),
+ }
+
+ m := mirko.New()
+ if err := m.Listen(); err != nil {
+ glog.Exitf("Listen(): %v", err)
+ }
+
+ pb.RegisterM6220ProxyServer(m.GRPC(), s)
+ tpb.RegisterSwitchControlServer(m.GRPC(), s)
+
+ if err := m.Serve(); err != nil {
+ glog.Exitf("Serve(): %v", err)
+ }
+
+ select {}
+}