github.phpd.cn/hashicorp/packer@v1.3.2/builder/virtualbox/common/step_configure_vrdp.go (about)

     1  package common
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  	"log"
     7  	"math/rand"
     8  	"net"
     9  
    10  	"github.com/hashicorp/packer/helper/multistep"
    11  	"github.com/hashicorp/packer/packer"
    12  )
    13  
    14  // This step configures the VM to enable the VRDP server
    15  // on the guest machine.
    16  //
    17  // Uses:
    18  //   driver Driver
    19  //   ui packer.Ui
    20  //   vmName string
    21  //
    22  // Produces:
    23  // vrdp_port unit - The port that VRDP is configured to listen on.
    24  type StepConfigureVRDP struct {
    25  	VRDPBindAddress string
    26  	VRDPPortMin     uint
    27  	VRDPPortMax     uint
    28  }
    29  
    30  func (s *StepConfigureVRDP) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
    31  	driver := state.Get("driver").(Driver)
    32  	ui := state.Get("ui").(packer.Ui)
    33  	vmName := state.Get("vmName").(string)
    34  
    35  	log.Printf("Looking for available port between %d and %d on %s", s.VRDPPortMin, s.VRDPPortMax, s.VRDPBindAddress)
    36  	var vrdpPort uint
    37  	portRange := int(s.VRDPPortMax - s.VRDPPortMin)
    38  
    39  	for {
    40  		if portRange > 0 {
    41  			vrdpPort = uint(rand.Intn(portRange)) + s.VRDPPortMin
    42  		} else {
    43  			vrdpPort = s.VRDPPortMin
    44  		}
    45  
    46  		log.Printf("Trying port: %d", vrdpPort)
    47  		l, err := net.Listen("tcp", fmt.Sprintf("%s:%d", s.VRDPBindAddress, vrdpPort))
    48  		if err == nil {
    49  			defer l.Close()
    50  			break
    51  		}
    52  	}
    53  
    54  	command := []string{
    55  		"modifyvm", vmName,
    56  		"--vrdeaddress", fmt.Sprintf("%s", s.VRDPBindAddress),
    57  		"--vrdeauthtype", "null",
    58  		"--vrde", "on",
    59  		"--vrdeport",
    60  		fmt.Sprintf("%d", vrdpPort),
    61  	}
    62  	if err := driver.VBoxManage(command...); err != nil {
    63  		err := fmt.Errorf("Error enabling VRDP: %s", err)
    64  		state.Put("error", err)
    65  		ui.Error(err.Error())
    66  		return multistep.ActionHalt
    67  	}
    68  
    69  	state.Put("vrdpIp", s.VRDPBindAddress)
    70  	state.Put("vrdpPort", vrdpPort)
    71  
    72  	return multistep.ActionContinue
    73  }
    74  
    75  func (s *StepConfigureVRDP) Cleanup(state multistep.StateBag) {}