e85c1c3393
This changeset implements client certificate support in crypto/tls for both handshake_server.go and handshake_client.go The updated server implementation sends an empty CertificateAuthorities field in the CertificateRequest, thus allowing clients to send any certificates they wish. Likewise, the client code will only respond with its certificate when the server requests a certificate with this field empty. R=agl, rsc, agl1 CC=golang-dev https://golang.org/cl/1975042
821 lines
16 KiB
Go
821 lines
16 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package tls
|
|
|
|
type clientHelloMsg struct {
|
|
raw []byte
|
|
vers uint16
|
|
random []byte
|
|
sessionId []byte
|
|
cipherSuites []uint16
|
|
compressionMethods []uint8
|
|
nextProtoNeg bool
|
|
serverName string
|
|
ocspStapling bool
|
|
}
|
|
|
|
func (m *clientHelloMsg) marshal() []byte {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
length := 2 + 32 + 1 + len(m.sessionId) + 2 + len(m.cipherSuites)*2 + 1 + len(m.compressionMethods)
|
|
numExtensions := 0
|
|
extensionsLength := 0
|
|
if m.nextProtoNeg {
|
|
numExtensions++
|
|
}
|
|
if m.ocspStapling {
|
|
extensionsLength += 1 + 2 + 2
|
|
numExtensions++
|
|
}
|
|
if len(m.serverName) > 0 {
|
|
extensionsLength += 5 + len(m.serverName)
|
|
numExtensions++
|
|
}
|
|
if numExtensions > 0 {
|
|
extensionsLength += 4 * numExtensions
|
|
length += 2 + extensionsLength
|
|
}
|
|
|
|
x := make([]byte, 4+length)
|
|
x[0] = typeClientHello
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
x[4] = uint8(m.vers >> 8)
|
|
x[5] = uint8(m.vers)
|
|
copy(x[6:38], m.random)
|
|
x[38] = uint8(len(m.sessionId))
|
|
copy(x[39:39+len(m.sessionId)], m.sessionId)
|
|
y := x[39+len(m.sessionId):]
|
|
y[0] = uint8(len(m.cipherSuites) >> 7)
|
|
y[1] = uint8(len(m.cipherSuites) << 1)
|
|
for i, suite := range m.cipherSuites {
|
|
y[2+i*2] = uint8(suite >> 8)
|
|
y[3+i*2] = uint8(suite)
|
|
}
|
|
z := y[2+len(m.cipherSuites)*2:]
|
|
z[0] = uint8(len(m.compressionMethods))
|
|
copy(z[1:], m.compressionMethods)
|
|
|
|
z = z[1+len(m.compressionMethods):]
|
|
if numExtensions > 0 {
|
|
z[0] = byte(extensionsLength >> 8)
|
|
z[1] = byte(extensionsLength)
|
|
z = z[2:]
|
|
}
|
|
if m.nextProtoNeg {
|
|
z[0] = byte(extensionNextProtoNeg >> 8)
|
|
z[1] = byte(extensionNextProtoNeg)
|
|
// The length is always 0
|
|
z = z[4:]
|
|
}
|
|
if len(m.serverName) > 0 {
|
|
z[0] = byte(extensionServerName >> 8)
|
|
z[1] = byte(extensionServerName)
|
|
l := len(m.serverName) + 5
|
|
z[2] = byte(l >> 8)
|
|
z[3] = byte(l)
|
|
z = z[4:]
|
|
|
|
// RFC 3546, section 3.1
|
|
//
|
|
// struct {
|
|
// NameType name_type;
|
|
// select (name_type) {
|
|
// case host_name: HostName;
|
|
// } name;
|
|
// } ServerName;
|
|
//
|
|
// enum {
|
|
// host_name(0), (255)
|
|
// } NameType;
|
|
//
|
|
// opaque HostName<1..2^16-1>;
|
|
//
|
|
// struct {
|
|
// ServerName server_name_list<1..2^16-1>
|
|
// } ServerNameList;
|
|
|
|
z[0] = byte((len(m.serverName) + 3) >> 8)
|
|
z[1] = byte(len(m.serverName) + 3)
|
|
z[3] = byte(len(m.serverName) >> 8)
|
|
z[4] = byte(len(m.serverName))
|
|
copy(z[5:], []byte(m.serverName))
|
|
z = z[l:]
|
|
}
|
|
if m.ocspStapling {
|
|
// RFC 4366, section 3.6
|
|
z[0] = byte(extensionStatusRequest >> 8)
|
|
z[1] = byte(extensionStatusRequest)
|
|
z[2] = 0
|
|
z[3] = 5
|
|
z[4] = 1 // OCSP type
|
|
// Two zero valued uint16s for the two lengths.
|
|
z = z[9:]
|
|
}
|
|
|
|
m.raw = x
|
|
|
|
return x
|
|
}
|
|
|
|
func (m *clientHelloMsg) unmarshal(data []byte) bool {
|
|
if len(data) < 42 {
|
|
return false
|
|
}
|
|
m.raw = data
|
|
m.vers = uint16(data[4])<<8 | uint16(data[5])
|
|
m.random = data[6:38]
|
|
sessionIdLen := int(data[38])
|
|
if sessionIdLen > 32 || len(data) < 39+sessionIdLen {
|
|
return false
|
|
}
|
|
m.sessionId = data[39 : 39+sessionIdLen]
|
|
data = data[39+sessionIdLen:]
|
|
if len(data) < 2 {
|
|
return false
|
|
}
|
|
// cipherSuiteLen is the number of bytes of cipher suite numbers. Since
|
|
// they are uint16s, the number must be even.
|
|
cipherSuiteLen := int(data[0])<<8 | int(data[1])
|
|
if cipherSuiteLen%2 == 1 || len(data) < 2+cipherSuiteLen {
|
|
return false
|
|
}
|
|
numCipherSuites := cipherSuiteLen / 2
|
|
m.cipherSuites = make([]uint16, numCipherSuites)
|
|
for i := 0; i < numCipherSuites; i++ {
|
|
m.cipherSuites[i] = uint16(data[2+2*i])<<8 | uint16(data[3+2*i])
|
|
}
|
|
data = data[2+cipherSuiteLen:]
|
|
if len(data) < 1 {
|
|
return false
|
|
}
|
|
compressionMethodsLen := int(data[0])
|
|
if len(data) < 1+compressionMethodsLen {
|
|
return false
|
|
}
|
|
m.compressionMethods = data[1 : 1+compressionMethodsLen]
|
|
|
|
data = data[1+compressionMethodsLen:]
|
|
|
|
m.nextProtoNeg = false
|
|
m.serverName = ""
|
|
m.ocspStapling = false
|
|
|
|
if len(data) == 0 {
|
|
// ClientHello is optionally followed by extension data
|
|
return true
|
|
}
|
|
if len(data) < 2 {
|
|
return false
|
|
}
|
|
|
|
extensionsLength := int(data[0])<<8 | int(data[1])
|
|
data = data[2:]
|
|
if extensionsLength != len(data) {
|
|
return false
|
|
}
|
|
|
|
for len(data) != 0 {
|
|
if len(data) < 4 {
|
|
return false
|
|
}
|
|
extension := uint16(data[0])<<8 | uint16(data[1])
|
|
length := int(data[2])<<8 | int(data[3])
|
|
data = data[4:]
|
|
if len(data) < length {
|
|
return false
|
|
}
|
|
|
|
switch extension {
|
|
case extensionServerName:
|
|
if length < 2 {
|
|
return false
|
|
}
|
|
numNames := int(data[0])<<8 | int(data[1])
|
|
d := data[2:]
|
|
for i := 0; i < numNames; i++ {
|
|
if len(d) < 3 {
|
|
return false
|
|
}
|
|
nameType := d[0]
|
|
nameLen := int(d[1])<<8 | int(d[2])
|
|
d = d[3:]
|
|
if len(d) < nameLen {
|
|
return false
|
|
}
|
|
if nameType == 0 {
|
|
m.serverName = string(d[0:nameLen])
|
|
break
|
|
}
|
|
d = d[nameLen:]
|
|
}
|
|
case extensionNextProtoNeg:
|
|
if length > 0 {
|
|
return false
|
|
}
|
|
m.nextProtoNeg = true
|
|
case extensionStatusRequest:
|
|
m.ocspStapling = length > 0 && data[0] == statusTypeOCSP
|
|
}
|
|
data = data[length:]
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
type serverHelloMsg struct {
|
|
raw []byte
|
|
vers uint16
|
|
random []byte
|
|
sessionId []byte
|
|
cipherSuite uint16
|
|
compressionMethod uint8
|
|
nextProtoNeg bool
|
|
nextProtos []string
|
|
certStatus bool
|
|
}
|
|
|
|
func (m *serverHelloMsg) marshal() []byte {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
length := 38 + len(m.sessionId)
|
|
numExtensions := 0
|
|
extensionsLength := 0
|
|
|
|
nextProtoLen := 0
|
|
if m.nextProtoNeg {
|
|
numExtensions++
|
|
for _, v := range m.nextProtos {
|
|
nextProtoLen += len(v)
|
|
}
|
|
nextProtoLen += len(m.nextProtos)
|
|
extensionsLength += nextProtoLen
|
|
}
|
|
if m.certStatus {
|
|
numExtensions++
|
|
}
|
|
if numExtensions > 0 {
|
|
extensionsLength += 4 * numExtensions
|
|
length += 2 + extensionsLength
|
|
}
|
|
|
|
x := make([]byte, 4+length)
|
|
x[0] = typeServerHello
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
x[4] = uint8(m.vers >> 8)
|
|
x[5] = uint8(m.vers)
|
|
copy(x[6:38], m.random)
|
|
x[38] = uint8(len(m.sessionId))
|
|
copy(x[39:39+len(m.sessionId)], m.sessionId)
|
|
z := x[39+len(m.sessionId):]
|
|
z[0] = uint8(m.cipherSuite >> 8)
|
|
z[1] = uint8(m.cipherSuite)
|
|
z[2] = uint8(m.compressionMethod)
|
|
|
|
z = z[3:]
|
|
if numExtensions > 0 {
|
|
z[0] = byte(extensionsLength >> 8)
|
|
z[1] = byte(extensionsLength)
|
|
z = z[2:]
|
|
}
|
|
if m.nextProtoNeg {
|
|
z[0] = byte(extensionNextProtoNeg >> 8)
|
|
z[1] = byte(extensionNextProtoNeg)
|
|
z[2] = byte(nextProtoLen >> 8)
|
|
z[3] = byte(nextProtoLen)
|
|
z = z[4:]
|
|
|
|
for _, v := range m.nextProtos {
|
|
l := len(v)
|
|
if l > 255 {
|
|
l = 255
|
|
}
|
|
z[0] = byte(l)
|
|
copy(z[1:], []byte(v[0:l]))
|
|
z = z[1+l:]
|
|
}
|
|
}
|
|
if m.certStatus {
|
|
z[0] = byte(extensionStatusRequest >> 8)
|
|
z[1] = byte(extensionStatusRequest)
|
|
z = z[4:]
|
|
}
|
|
|
|
m.raw = x
|
|
|
|
return x
|
|
}
|
|
|
|
func append(slice []string, elem string) []string {
|
|
if len(slice) < cap(slice) {
|
|
slice = slice[0 : len(slice)+1]
|
|
slice[len(slice)-1] = elem
|
|
return slice
|
|
}
|
|
|
|
fresh := make([]string, len(slice)+1, cap(slice)*2+1)
|
|
copy(fresh, slice)
|
|
fresh[len(slice)] = elem
|
|
return fresh
|
|
}
|
|
|
|
func (m *serverHelloMsg) unmarshal(data []byte) bool {
|
|
if len(data) < 42 {
|
|
return false
|
|
}
|
|
m.raw = data
|
|
m.vers = uint16(data[4])<<8 | uint16(data[5])
|
|
m.random = data[6:38]
|
|
sessionIdLen := int(data[38])
|
|
if sessionIdLen > 32 || len(data) < 39+sessionIdLen {
|
|
return false
|
|
}
|
|
m.sessionId = data[39 : 39+sessionIdLen]
|
|
data = data[39+sessionIdLen:]
|
|
if len(data) < 3 {
|
|
return false
|
|
}
|
|
m.cipherSuite = uint16(data[0])<<8 | uint16(data[1])
|
|
m.compressionMethod = data[2]
|
|
data = data[3:]
|
|
|
|
m.nextProtoNeg = false
|
|
m.nextProtos = nil
|
|
m.certStatus = false
|
|
|
|
if len(data) == 0 {
|
|
// ServerHello is optionally followed by extension data
|
|
return true
|
|
}
|
|
if len(data) < 2 {
|
|
return false
|
|
}
|
|
|
|
extensionsLength := int(data[0])<<8 | int(data[1])
|
|
data = data[2:]
|
|
if len(data) != extensionsLength {
|
|
return false
|
|
}
|
|
|
|
for len(data) != 0 {
|
|
if len(data) < 4 {
|
|
return false
|
|
}
|
|
extension := uint16(data[0])<<8 | uint16(data[1])
|
|
length := int(data[2])<<8 | int(data[3])
|
|
data = data[4:]
|
|
if len(data) < length {
|
|
return false
|
|
}
|
|
|
|
switch extension {
|
|
case extensionNextProtoNeg:
|
|
m.nextProtoNeg = true
|
|
d := data
|
|
for len(d) > 0 {
|
|
l := int(d[0])
|
|
d = d[1:]
|
|
if l == 0 || l > len(d) {
|
|
return false
|
|
}
|
|
m.nextProtos = append(m.nextProtos, string(d[0:l]))
|
|
d = d[l:]
|
|
}
|
|
case extensionStatusRequest:
|
|
if length > 0 {
|
|
return false
|
|
}
|
|
m.certStatus = true
|
|
}
|
|
data = data[length:]
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
type certificateMsg struct {
|
|
raw []byte
|
|
certificates [][]byte
|
|
}
|
|
|
|
func (m *certificateMsg) marshal() (x []byte) {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
var i int
|
|
for _, slice := range m.certificates {
|
|
i += len(slice)
|
|
}
|
|
|
|
length := 3 + 3*len(m.certificates) + i
|
|
x = make([]byte, 4+length)
|
|
x[0] = typeCertificate
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
|
|
certificateOctets := length - 3
|
|
x[4] = uint8(certificateOctets >> 16)
|
|
x[5] = uint8(certificateOctets >> 8)
|
|
x[6] = uint8(certificateOctets)
|
|
|
|
y := x[7:]
|
|
for _, slice := range m.certificates {
|
|
y[0] = uint8(len(slice) >> 16)
|
|
y[1] = uint8(len(slice) >> 8)
|
|
y[2] = uint8(len(slice))
|
|
copy(y[3:], slice)
|
|
y = y[3+len(slice):]
|
|
}
|
|
|
|
m.raw = x
|
|
return
|
|
}
|
|
|
|
func (m *certificateMsg) unmarshal(data []byte) bool {
|
|
if len(data) < 7 {
|
|
return false
|
|
}
|
|
|
|
m.raw = data
|
|
certsLen := uint32(data[4])<<16 | uint32(data[5])<<8 | uint32(data[6])
|
|
if uint32(len(data)) != certsLen+7 {
|
|
return false
|
|
}
|
|
|
|
numCerts := 0
|
|
d := data[7:]
|
|
for certsLen > 0 {
|
|
if len(d) < 4 {
|
|
return false
|
|
}
|
|
certLen := uint32(d[0])<<24 | uint32(d[1])<<8 | uint32(d[2])
|
|
if uint32(len(d)) < 3+certLen {
|
|
return false
|
|
}
|
|
d = d[3+certLen:]
|
|
certsLen -= 3 + certLen
|
|
numCerts++
|
|
}
|
|
|
|
m.certificates = make([][]byte, numCerts)
|
|
d = data[7:]
|
|
for i := 0; i < numCerts; i++ {
|
|
certLen := uint32(d[0])<<24 | uint32(d[1])<<8 | uint32(d[2])
|
|
m.certificates[i] = d[3 : 3+certLen]
|
|
d = d[3+certLen:]
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
type certificateStatusMsg struct {
|
|
raw []byte
|
|
statusType uint8
|
|
response []byte
|
|
}
|
|
|
|
func (m *certificateStatusMsg) marshal() []byte {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
var x []byte
|
|
if m.statusType == statusTypeOCSP {
|
|
x = make([]byte, 4+4+len(m.response))
|
|
x[0] = typeCertificateStatus
|
|
l := len(m.response) + 4
|
|
x[1] = byte(l >> 16)
|
|
x[2] = byte(l >> 8)
|
|
x[3] = byte(l)
|
|
x[4] = statusTypeOCSP
|
|
|
|
l -= 4
|
|
x[5] = byte(l >> 16)
|
|
x[6] = byte(l >> 8)
|
|
x[7] = byte(l)
|
|
copy(x[8:], m.response)
|
|
} else {
|
|
x = []byte{typeCertificateStatus, 0, 0, 1, m.statusType}
|
|
}
|
|
|
|
m.raw = x
|
|
return x
|
|
}
|
|
|
|
func (m *certificateStatusMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
if len(data) < 5 {
|
|
return false
|
|
}
|
|
m.statusType = data[4]
|
|
|
|
m.response = nil
|
|
if m.statusType == statusTypeOCSP {
|
|
if len(data) < 8 {
|
|
return false
|
|
}
|
|
respLen := uint32(data[5])<<16 | uint32(data[6])<<8 | uint32(data[7])
|
|
if uint32(len(data)) != 4+4+respLen {
|
|
return false
|
|
}
|
|
m.response = data[8:]
|
|
}
|
|
return true
|
|
}
|
|
|
|
type serverHelloDoneMsg struct{}
|
|
|
|
func (m *serverHelloDoneMsg) marshal() []byte {
|
|
x := make([]byte, 4)
|
|
x[0] = typeServerHelloDone
|
|
return x
|
|
}
|
|
|
|
func (m *serverHelloDoneMsg) unmarshal(data []byte) bool {
|
|
return len(data) == 4
|
|
}
|
|
|
|
type clientKeyExchangeMsg struct {
|
|
raw []byte
|
|
ciphertext []byte
|
|
}
|
|
|
|
func (m *clientKeyExchangeMsg) marshal() []byte {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
length := len(m.ciphertext) + 2
|
|
x := make([]byte, length+4)
|
|
x[0] = typeClientKeyExchange
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
x[4] = uint8(len(m.ciphertext) >> 8)
|
|
x[5] = uint8(len(m.ciphertext))
|
|
copy(x[6:], m.ciphertext)
|
|
|
|
m.raw = x
|
|
return x
|
|
}
|
|
|
|
func (m *clientKeyExchangeMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
if len(data) < 7 {
|
|
return false
|
|
}
|
|
cipherTextLen := int(data[4])<<8 | int(data[5])
|
|
if len(data) != 6+cipherTextLen {
|
|
return false
|
|
}
|
|
m.ciphertext = data[6:]
|
|
return true
|
|
}
|
|
|
|
type finishedMsg struct {
|
|
raw []byte
|
|
verifyData []byte
|
|
}
|
|
|
|
func (m *finishedMsg) marshal() (x []byte) {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
x = make([]byte, 16)
|
|
x[0] = typeFinished
|
|
x[3] = 12
|
|
copy(x[4:], m.verifyData)
|
|
m.raw = x
|
|
return
|
|
}
|
|
|
|
func (m *finishedMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
if len(data) != 4+12 {
|
|
return false
|
|
}
|
|
m.verifyData = data[4:]
|
|
return true
|
|
}
|
|
|
|
type nextProtoMsg struct {
|
|
raw []byte
|
|
proto string
|
|
}
|
|
|
|
func (m *nextProtoMsg) marshal() []byte {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
l := len(m.proto)
|
|
if l > 255 {
|
|
l = 255
|
|
}
|
|
|
|
padding := 32 - (l+2)%32
|
|
length := l + padding + 2
|
|
x := make([]byte, length+4)
|
|
x[0] = typeNextProtocol
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
|
|
y := x[4:]
|
|
y[0] = byte(l)
|
|
copy(y[1:], []byte(m.proto[0:l]))
|
|
y = y[1+l:]
|
|
y[0] = byte(padding)
|
|
|
|
m.raw = x
|
|
|
|
return x
|
|
}
|
|
|
|
func (m *nextProtoMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
|
|
if len(data) < 5 {
|
|
return false
|
|
}
|
|
data = data[4:]
|
|
protoLen := int(data[0])
|
|
data = data[1:]
|
|
if len(data) < protoLen {
|
|
return false
|
|
}
|
|
m.proto = string(data[0:protoLen])
|
|
data = data[protoLen:]
|
|
|
|
if len(data) < 1 {
|
|
return false
|
|
}
|
|
paddingLen := int(data[0])
|
|
data = data[1:]
|
|
if len(data) != paddingLen {
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
type certificateRequestMsg struct {
|
|
raw []byte
|
|
certificateTypes []byte
|
|
certificateAuthorities [][]byte
|
|
}
|
|
|
|
func (m *certificateRequestMsg) marshal() (x []byte) {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
// See http://tools.ietf.org/html/rfc4346#section-7.4.4
|
|
length := 1 + len(m.certificateTypes) + 2
|
|
for _, ca := range m.certificateAuthorities {
|
|
length += 2 + len(ca)
|
|
}
|
|
|
|
x = make([]byte, 4+length)
|
|
x[0] = typeCertificateRequest
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
|
|
x[4] = uint8(len(m.certificateTypes))
|
|
|
|
copy(x[5:], m.certificateTypes)
|
|
y := x[5+len(m.certificateTypes):]
|
|
|
|
numCA := len(m.certificateAuthorities)
|
|
y[0] = uint8(numCA >> 8)
|
|
y[1] = uint8(numCA)
|
|
y = y[2:]
|
|
for _, ca := range m.certificateAuthorities {
|
|
y[0] = uint8(len(ca) >> 8)
|
|
y[1] = uint8(len(ca))
|
|
y = y[2:]
|
|
copy(y, ca)
|
|
y = y[len(ca):]
|
|
}
|
|
|
|
m.raw = x
|
|
|
|
return
|
|
}
|
|
|
|
func (m *certificateRequestMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
|
|
if len(data) < 5 {
|
|
return false
|
|
}
|
|
|
|
length := uint32(data[1])<<16 | uint32(data[2])<<8 | uint32(data[3])
|
|
if uint32(len(data))-4 != length {
|
|
return false
|
|
}
|
|
|
|
numCertTypes := int(data[4])
|
|
data = data[5:]
|
|
if numCertTypes == 0 || len(data) <= numCertTypes {
|
|
return false
|
|
}
|
|
|
|
m.certificateTypes = make([]byte, numCertTypes)
|
|
if copy(m.certificateTypes, data) != numCertTypes {
|
|
return false
|
|
}
|
|
|
|
data = data[numCertTypes:]
|
|
if len(data) < 2 {
|
|
return false
|
|
}
|
|
|
|
numCAs := uint16(data[0])<<16 | uint16(data[1])
|
|
data = data[2:]
|
|
|
|
m.certificateAuthorities = make([][]byte, numCAs)
|
|
for i := uint16(0); i < numCAs; i++ {
|
|
if len(data) < 2 {
|
|
return false
|
|
}
|
|
caLen := uint16(data[0])<<16 | uint16(data[1])
|
|
|
|
data = data[2:]
|
|
if len(data) < int(caLen) {
|
|
return false
|
|
}
|
|
|
|
ca := make([]byte, caLen)
|
|
copy(ca, data)
|
|
m.certificateAuthorities[i] = ca
|
|
data = data[caLen:]
|
|
}
|
|
|
|
if len(data) > 0 {
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
type certificateVerifyMsg struct {
|
|
raw []byte
|
|
signature []byte
|
|
}
|
|
|
|
func (m *certificateVerifyMsg) marshal() (x []byte) {
|
|
if m.raw != nil {
|
|
return m.raw
|
|
}
|
|
|
|
// See http://tools.ietf.org/html/rfc4346#section-7.4.8
|
|
siglength := len(m.signature)
|
|
length := 2 + siglength
|
|
x = make([]byte, 4+length)
|
|
x[0] = typeCertificateVerify
|
|
x[1] = uint8(length >> 16)
|
|
x[2] = uint8(length >> 8)
|
|
x[3] = uint8(length)
|
|
x[4] = uint8(siglength >> 8)
|
|
x[5] = uint8(siglength)
|
|
copy(x[6:], m.signature)
|
|
|
|
m.raw = x
|
|
|
|
return
|
|
}
|
|
|
|
func (m *certificateVerifyMsg) unmarshal(data []byte) bool {
|
|
m.raw = data
|
|
|
|
if len(data) < 6 {
|
|
return false
|
|
}
|
|
|
|
length := uint32(data[1])<<16 | uint32(data[2])<<8 | uint32(data[3])
|
|
if uint32(len(data))-4 != length {
|
|
return false
|
|
}
|
|
|
|
siglength := int(data[4])<<8 + int(data[5])
|
|
if len(data)-6 != siglength {
|
|
return false
|
|
}
|
|
|
|
m.signature = data[6:]
|
|
|
|
return true
|
|
}
|