Add support for NTLM the WinRM communicator.

WinRM exposes an HTTP transport decorator that can be used for different
authentication schemes.  Windows on Azures requires this if one is to use
the out of the box configuration.

Godeps/Godeps.json

@@ -329,7 +329,7 @@
 		},
 		{
 			"ImportPath": "github.com/packer-community/winrmcp/winrmcp",
-			"Rev": "3d184cea22ee1c41ec1697e0d830ff0c78f7ea97"
+			"Rev": "f1bcf36a69fa2945e65dd099eee11b560fbd3346"
 		},
 		{
 			"ImportPath": "github.com/pierrec/lz4",

communicator/winrm/communicator.go

@@ -41,6 +41,11 @@ func New(config *Config) (*Communicator, error) {
 
 	// Create the client
 	params := winrm.DefaultParameters()
+
+	if config.TransportDecorator != nil {
+		params.TransportDecorator = config.TransportDecorator
+	}
+
 	params.Timeout = formatDuration(config.Timeout)
 	client, err := winrm.NewClientWithParameters(
 		endpoint, config.Username, config.Password, params)
@@ -155,5 +160,6 @@ func (c *Communicator) newCopyClient() (*winrmcp.Winrmcp, error) {
 		Insecure:              c.config.Insecure,
 		OperationTimeout:      c.config.Timeout,
 		MaxOperationsPerShell: 15, // lowest common denominator
+		TransportDecorator:    c.config.TransportDecorator,
 	})
 }

communicator/winrm/config.go

@@ -1,16 +1,18 @@
 package winrm
 
 import (
+	"net/http"
 	"time"
 )
 
 // Config is used to configure the WinRM connection
 type Config struct {
-	Host     string
+	Host               string
-	Port     int
+	Port               int
-	Username string
+	Username           string
-	Password string
+	Password           string
-	Timeout  time.Duration
+	Timeout            time.Duration
-	Https    bool
+	Https              bool
-	Insecure bool
+	Insecure           bool
+	TransportDecorator func(*http.Transport) http.RoundTripper
 }

helper/communicator/config.go

@@ -3,6 +3,7 @@ package communicator
 import (
 	"errors"
 	"fmt"
+	"net/http"
 	"os"
 	"time"
 
@@ -32,13 +33,14 @@ type Config struct {
 	SSHFileTransferMethod string        `mapstructure:"ssh_file_transfer_method"`
 
 	// WinRM
-	WinRMUser     string        `mapstructure:"winrm_username"`
+	WinRMUser               string        `mapstructure:"winrm_username"`
-	WinRMPassword string        `mapstructure:"winrm_password"`
+	WinRMPassword           string        `mapstructure:"winrm_password"`
-	WinRMHost     string        `mapstructure:"winrm_host"`
+	WinRMHost               string        `mapstructure:"winrm_host"`
-	WinRMPort     int           `mapstructure:"winrm_port"`
+	WinRMPort               int           `mapstructure:"winrm_port"`
-	WinRMTimeout  time.Duration `mapstructure:"winrm_timeout"`
+	WinRMTimeout            time.Duration `mapstructure:"winrm_timeout"`
-	WinRMUseSSL   bool          `mapstructure:"winrm_use_ssl"`
+	WinRMUseSSL             bool          `mapstructure:"winrm_use_ssl"`
-	WinRMInsecure bool          `mapstructure:"winrm_insecure"`
+	WinRMInsecure           bool          `mapstructure:"winrm_insecure"`
+	WinRMTransportDecorator func(*http.Transport) http.RoundTripper
 }
 
 // Port returns the port that will be used for access based on config.

helper/communicator/step_connect_winrm.go

@@ -124,13 +124,14 @@ func (s *StepConnectWinRM) waitForWinRM(state multistep.StateBag, cancel <-chan
 
 		log.Println("[INFO] Attempting WinRM connection...")
 		comm, err = winrm.New(&winrm.Config{
-			Host:     host,
+			Host:               host,
-			Port:     port,
+			Port:               port,
-			Username: user,
+			Username:           user,
-			Password: password,
+			Password:           password,
-			Timeout:  s.Config.WinRMTimeout,
+			Timeout:            s.Config.WinRMTimeout,
-			Https:    s.Config.WinRMUseSSL,
+			Https:              s.Config.WinRMUseSSL,
-			Insecure: s.Config.WinRMInsecure,
+			Insecure:           s.Config.WinRMInsecure,
+			TransportDecorator: s.Config.WinRMTransportDecorator,
 		})
 		if err != nil {
 			log.Printf("[ERROR] WinRM connection err: %s", err)