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// +build darwin
package bsdp
import (
"testing"
"github.com/insomniacslk/dhcp/dhcpv4"
"github.com/stretchr/testify/require"
)
/*
* BootImageID
*/
func TestBootImageIDToBytes(t *testing.T) {
b := BootImageID{
IsInstall: true,
ImageType: BootImageTypeMacOSX,
Index: 0x1000,
}
actual := b.ToBytes()
expected := []byte{0x81, 0, 0x10, 0}
require.Equal(t, expected, actual)
b.IsInstall = false
actual = b.ToBytes()
expected = []byte{0x01, 0, 0x10, 0}
require.Equal(t, expected, actual)
}
func TestBootImageIDFromBytes(t *testing.T) {
b := BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOSX,
Index: 0x1000,
}
newBootImage, err := BootImageIDFromBytes(b.ToBytes())
require.NoError(t, err)
require.Equal(t, b, *newBootImage)
b = BootImageID{
IsInstall: true,
ImageType: BootImageTypeMacOSX,
Index: 0x1011,
}
newBootImage, err = BootImageIDFromBytes(b.ToBytes())
require.NoError(t, err)
require.Equal(t, b, *newBootImage)
}
func TestBootImageIDFromBytesFail(t *testing.T) {
serialized := []byte{0x81, 0, 0x10} // intentionally left short
deserialized, err := BootImageIDFromBytes(serialized)
require.Nil(t, deserialized)
require.Error(t, err)
}
/*
* BootImage
*/
func TestBootImageToBytes(t *testing.T) {
b := BootImage{
ID: BootImageID{
IsInstall: true,
ImageType: BootImageTypeMacOSX,
Index: 0x1000,
},
Name: "bsdp-1",
}
expected := []byte{
0x81, 0, 0x10, 0, // boot image ID
6, // len(Name)
98, 115, 100, 112, 45, 49, // byte-encoding of Name
}
actual := b.ToBytes()
require.Equal(t, expected, actual)
b = BootImage{
ID: BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOSX,
Index: 0x1010,
},
Name: "bsdp-21",
}
expected = []byte{
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, 49, // byte-encoding of Name
}
actual = b.ToBytes()
require.Equal(t, expected, actual)
}
func TestBootImageFromBytes(t *testing.T) {
input := []byte{
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, 49, // byte-encoding of Name
}
b, err := BootImageFromBytes(input)
require.NoError(t, err)
expectedBootImage := BootImage{
ID: BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOSX,
Index: 0x1010,
},
Name: "bsdp-21",
}
require.Equal(t, expectedBootImage, *b)
}
func TestBootImageFromBytesOnlyBootImageID(t *testing.T) {
// Only a BootImageID, nothing else.
input := []byte{0x1, 0, 0x10, 0x10}
b, err := BootImageFromBytes(input)
require.Nil(t, b)
require.Error(t, err)
}
func TestBootImageFromBytesShortBootImage(t *testing.T) {
input := []byte{
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, // Name bytes (intentionally off-by-one)
}
b, err := BootImageFromBytes(input)
require.Nil(t, b)
require.Error(t, err)
}
func TestParseBootImageSingleBootImage(t *testing.T) {
input := []byte{
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, 49, // byte-encoding of Name
}
bs, err := ParseBootImagesFromOption(input)
require.NoError(t, err)
require.Equal(t, len(bs), 1, "parsing single boot image should return 1")
b := bs[0]
expectedBootImageID := BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOSX,
Index: 0x1010,
}
require.Equal(t, expectedBootImageID, b.ID)
require.Equal(t, b.Name, "bsdp-21")
}
func TestParseBootImageMultipleBootImage(t *testing.T) {
input := []byte{
// boot image 1
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, 49, // byte-encoding of Name
// boot image 2
0x82, 0, 0x11, 0x22, // boot image ID
8, // len(Name)
98, 115, 100, 112, 45, 50, 50, 50, // byte-encoding of Name
}
bs, err := ParseBootImagesFromOption(input)
require.NoError(t, err)
require.Equal(t, len(bs), 2, "parsing 2 BootImages should return 2")
b1 := bs[0]
b2 := bs[1]
expectedID1 := BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOSX,
Index: 0x1010,
}
expectedID2 := BootImageID{
IsInstall: true,
ImageType: BootImageTypeMacOSXServer,
Index: 0x1122,
}
require.Equal(t, expectedID1, b1.ID, "first BootImageID should be equal")
require.Equal(t, expectedID2, b2.ID, "second BootImageID should be equal")
require.Equal(t, "bsdp-21", b1.Name, "first BootImage name should be equal")
require.Equal(t, "bsdp-222", b2.Name, "second BootImage name should be equal")
}
func TestParseBootImageFail(t *testing.T) {
_, err := ParseBootImagesFromOption([]byte{})
require.Error(t, err, "parseBootImages with empty arg")
_, err = ParseBootImagesFromOption([]byte{1, 2, 3})
require.Error(t, err, "parseBootImages with short arg")
_, err = ParseBootImagesFromOption([]byte{
// boot image 1
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 50, // byte-encoding of Name (intentionally shorter)
// boot image 2
0x82, 0, 0x11, 0x22, // boot image ID
8, // len(Name)
98, 115, 100, 112, 45, 50, 50, 50, // byte-encoding of Name
})
require.Error(t, err, "parseBootImages with short arg")
}
/*
* ParseVendorOptionsFromOptions
*/
func TestParseVendorOptions(t *testing.T) {
expectedOpts := []dhcpv4.Option{
dhcpv4.Option{
Code: OptionMessageType,
Data: []byte{byte(MessageTypeList)},
},
dhcpv4.Option{
Code: OptionVersion,
Data: Version1_0,
},
}
recvOpts := []dhcpv4.Option{
dhcpv4.Option{
Code: dhcpv4.OptionDHCPMessageType,
Data: []byte{byte(dhcpv4.MessageTypeAck)},
},
dhcpv4.Option{
Code: dhcpv4.OptionBroadcastAddress,
Data: []byte{0xff, 0xff, 0xff, 0xff},
},
dhcpv4.Option{
Code: dhcpv4.OptionVendorSpecificInformation,
Data: dhcpv4.OptionsToBytesWithoutMagicCookie(expectedOpts),
},
}
opts := ParseVendorOptionsFromOptions(recvOpts)
require.Equal(t, expectedOpts, opts, "Parsed vendorOpts should be the same")
}
func TestParseVendorOptionsFromOptionsNotPresent(t *testing.T) {
expectedOpts := []dhcpv4.Option{
dhcpv4.Option{
Code: dhcpv4.OptionDHCPMessageType,
Data: []byte{byte(dhcpv4.MessageTypeAck)},
},
dhcpv4.Option{
Code: dhcpv4.OptionBroadcastAddress,
Data: []byte{0xff, 0xff, 0xff, 0xff},
},
}
opts := ParseVendorOptionsFromOptions(expectedOpts)
require.Empty(t, opts, "empty vendor opts if not present in DHCP opts")
}
func TestParseVendorOptionsFromOptionsEmpty(t *testing.T) {
opts := ParseVendorOptionsFromOptions([]dhcpv4.Option{})
require.Empty(t, opts, "vendor opts should be empty if given an empty input")
}
func TestParseVendorOptionsFromOptionsFail(t *testing.T) {
opts := []dhcpv4.Option{
dhcpv4.Option{
Code: dhcpv4.OptionVendorSpecificInformation,
Data: []byte{
0x1, 0x1, 0x1, // Option 1: LIST
0x2, 0x2, 0x01, // Option 2: Version (intentionally left short)
},
},
}
vendorOpts := ParseVendorOptionsFromOptions(opts)
require.Empty(t, vendorOpts, "vendor opts should be empty on parse error")
}
/*
* ParseBootImageListFromAck
*/
func TestParseBootImageListFromAck(t *testing.T) {
expectedBootImages := []BootImage{
BootImage{
ID: BootImageID{
IsInstall: true,
ImageType: BootImageTypeMacOSX,
Index: 0x1010,
},
Name: "bsdp-1",
},
BootImage{
ID: BootImageID{
IsInstall: false,
ImageType: BootImageTypeMacOS9,
Index: 0x1111,
},
Name: "bsdp-2",
},
}
var bootImageBytes []byte
for _, image := range expectedBootImages {
bootImageBytes = append(bootImageBytes, image.ToBytes()...)
}
ack, _ := dhcpv4.New()
ack.AddOption(dhcpv4.Option{
Code: dhcpv4.OptionVendorSpecificInformation,
Data: dhcpv4.OptionsToBytesWithoutMagicCookie([]dhcpv4.Option{
dhcpv4.Option{
Code: OptionBootImageList,
Data: bootImageBytes,
},
}),
})
images, err := ParseBootImageListFromAck(*ack)
require.NoError(t, err)
require.Equal(t, expectedBootImages, images, "should get same BootImages")
}
func TestParseBootImageListFromAckNoVendorOption(t *testing.T) {
ack, _ := dhcpv4.New()
ack.AddOption(dhcpv4.Option{
Code: OptionMessageType,
Data: []byte{byte(dhcpv4.MessageTypeAck)},
})
images, err := ParseBootImageListFromAck(*ack)
require.NoError(t, err, "no vendor extensions should not return error")
require.Empty(t, images, "should not get images from ACK without Vendor extensions")
}
func TestParseBootImageListFromAckFail(t *testing.T) {
ack, _ := dhcpv4.New()
ack.AddOption(dhcpv4.Option{
Code: OptionMessageType,
Data: []byte{byte(dhcpv4.MessageTypeAck)},
})
ack.AddOption(dhcpv4.Option{
Code: dhcpv4.OptionVendorSpecificInformation,
Data: dhcpv4.OptionsToBytesWithoutMagicCookie([]dhcpv4.Option{
dhcpv4.Option{
Code: OptionBootImageList,
Data: []byte{
// boot image 1
0x1, 0, 0x10, 0x10, // boot image ID
7, // len(Name)
98, 115, 100, 112, 45, 49, // byte-encoding of Name (intentionally short)
// boot image 2
0x82, 0, 0x11, 0x22, // boot image ID
8, // len(Name)
98, 115, 100, 112, 45, 50, 50, 50, // byte-encoding of Name
},
},
}),
})
images, err := ParseBootImageListFromAck(*ack)
require.Nil(t, images, "should get nil on parse error")
require.Error(t, err, "should get error on parse error")
}
/*
* Private funcs
*/
func TestNeedsReplyPort(t *testing.T) {
require.True(t, needsReplyPort(123))
require.False(t, needsReplyPort(0))
require.False(t, needsReplyPort(dhcpv4.ClientPort))
}
|
