128 lines
3.2 KiB
Go
128 lines
3.2 KiB
Go
package googlecompute
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import (
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"context"
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/binary"
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"encoding/pem"
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"errors"
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"fmt"
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"os"
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"time"
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"github.com/hashicorp/packer-plugin-sdk/multistep"
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packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
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)
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// StepCreateWindowsPassword represents a Packer build step that sets the windows password on a Windows GCE instance.
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type StepCreateWindowsPassword struct {
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Debug bool
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DebugKeyPath string
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}
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// Run executes the Packer build step that sets the windows password on a Windows GCE instance.
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func (s *StepCreateWindowsPassword) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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ui := state.Get("ui").(packersdk.Ui)
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d := state.Get("driver").(Driver)
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c := state.Get("config").(*Config)
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name := state.Get("instance_name").(string)
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if c.Comm.WinRMPassword != "" {
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state.Put("winrm_password", c.Comm.WinRMPassword)
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packersdk.LogSecretFilter.Set(c.Comm.WinRMPassword)
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return multistep.ActionContinue
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}
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create, ok := state.GetOk("create_windows_password")
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if !ok || !create.(bool) {
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return multistep.ActionContinue
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}
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ui.Say("Creating windows user for instance...")
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priv, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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err := fmt.Errorf("Error creating temporary key: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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buf := make([]byte, 4)
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binary.BigEndian.PutUint32(buf, uint32(priv.E))
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email := ""
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if c.account != nil {
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email = c.account.jwt.Email
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}
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data := WindowsPasswordConfig{
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key: priv,
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UserName: c.Comm.WinRMUser,
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Modulus: base64.StdEncoding.EncodeToString(priv.N.Bytes()),
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Exponent: base64.StdEncoding.EncodeToString(buf[1:]),
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Email: email,
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ExpireOn: time.Now().Add(time.Minute * 5),
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}
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if s.Debug {
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priv_blk := pem.Block{
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Type: "RSA PRIVATE KEY",
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Headers: nil,
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Bytes: x509.MarshalPKCS1PrivateKey(priv),
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}
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ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
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f, err := os.Create(s.DebugKeyPath)
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if err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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// Write out the key
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err = pem.Encode(f, &priv_blk)
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f.Close()
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if err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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}
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errCh, err := d.CreateOrResetWindowsPassword(name, c.Zone, &data)
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if err == nil {
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ui.Message("Waiting for windows password to complete...")
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select {
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case err = <-errCh:
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case <-time.After(c.StateTimeout):
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err = errors.New("time out while waiting for the password to be created")
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}
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}
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if err != nil {
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err := fmt.Errorf("Error creating windows password: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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ui.Message("Created password.")
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if s.Debug {
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ui.Message(fmt.Sprintf(
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"Password (since debug is enabled): %s", data.password))
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}
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state.Put("winrm_password", data.password)
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packersdk.LogSecretFilter.Set(data.password)
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return multistep.ActionContinue
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}
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// Nothing to clean up. The windows password is only created on the single instance.
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func (s *StepCreateWindowsPassword) Cleanup(state multistep.StateBag) {}
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