Esempio n. 1
0
// NewClientContext creates new client context. It uses client
// credentials cred generated by AcquireCurrentUserCredentials or
// AcquireUserCredentials and SPN to start client Negotiate
// negotiation sequence. targetName is the service principal name
// (SPN) or the security context of the destination server.
// NewClientContext returns new token to be sent to the server.
func NewClientContext(cred *sspi.Credentials, targetName string) (cc *ClientContext, outputToken []byte, err error) {
	var tname *uint16
	if len(targetName) > 0 {
		p, err2 := syscall.UTF16FromString(targetName)
		if err2 != nil {
			return nil, nil, err2
		}
		if len(p) > 0 {
			tname = &p[0]
		}
	}
	otoken := make([]byte, PackageInfo.MaxToken)
	c := sspi.NewClientContext(cred, sspi.ISC_REQ_CONNECTION)
	authCompleted, n, err2 := updateContext(c, otoken, nil, tname)
	if err2 != nil {
		return nil, nil, err2
	}
	if authCompleted {
		c.Release()
		return nil, nil, errors.New("negotiate authentication should not be completed yet")
	}
	if n == 0 {
		c.Release()
		return nil, nil, errors.New("negotiate token should not be empty")
	}
	otoken = otoken[:n]
	return &ClientContext{sctxt: c, targetName: tname}, otoken, nil
}
Esempio n. 2
0
func NewClientContext(cred *sspi.Credentials, conn io.ReadWriter) *Client {
	return &Client{
		ctx:  sspi.NewClientContext(cred, sspi.ISC_REQ_STREAM|sspi.ISC_REQ_ALLOCATE_MEMORY|sspi.ISC_REQ_EXTENDED_ERROR|sspi.ISC_REQ_MANUAL_CRED_VALIDATION),
		conn: conn,
		// TODO: decide how large this buffer needs to be (it cannot be too small otherwise messages won't fit)
		inbuf: newInputBuffer(1000, conn),
	}
}
Esempio n. 3
0
File: ntlm.go Progetto: postfix/sspi
// NewClientContext creates new client context. It uses client
// credentials cred generated by AcquireCurrentUserCredentials or
// AcquireUserCredentials and, if successful, outputs negotiate
// message. Negotiate message needs to be sent to the server to
// start NTLM negotiation sequence.
func NewClientContext(cred *sspi.Credentials) (*ClientContext, []byte, error) {
	negotiate := make([]byte, PackageInfo.MaxToken)
	c := sspi.NewClientContext(cred, sspi.ISC_REQ_CONNECTION)
	authCompleted, n, err := updateContext(c, negotiate, nil)
	if err != nil {
		return nil, nil, err
	}
	if authCompleted {
		c.Release()
		return nil, nil, errors.New("ntlm authentication should not be completed yet")
	}
	if n == 0 {
		c.Release()
		return nil, nil, errors.New("ntlm token should not be empty")
	}
	negotiate = negotiate[:n]
	return &ClientContext{sctxt: c}, negotiate, nil
}