nego.h

 
#ifndef FREERDP_LIB_CORE_NEGO_H
#define FREERDP_LIB_CORE_NEGO_H
 
#include "transport.h"
 
#include <freerdp/types.h>
#include <freerdp/settings.h>
#include <freerdp/log.h>
#include <freerdp/api.h>
 
#include <winpr/stream.h>
 
/* Protocol Security Negotiation Protocols
 * [MS-RDPBCGR] 2.2.1.1.1 RDP Negotiation Request (RDP_NEG_REQ)
 */
#define PROTOCOL_RDP 0x00000000
#define PROTOCOL_SSL 0x00000001
#define PROTOCOL_HYBRID 0x00000002
#define PROTOCOL_RDSTLS 0x00000004
#define PROTOCOL_HYBRID_EX 0x00000008
#define PROTOCOL_RDSAAD 0x00000010
 
#define PROTOCOL_FAILED_NEGO 0x80000000 /* only used internally, not on the wire */
 
/* Protocol Security Negotiation Failure Codes */
enum RDP_NEG_FAILURE_FAILURECODES
{
  SSL_REQUIRED_BY_SERVER = 0x00000001,
  SSL_NOT_ALLOWED_BY_SERVER = 0x00000002,
  SSL_CERT_NOT_ON_SERVER = 0x00000003,
  INCONSISTENT_FLAGS = 0x00000004,
  HYBRID_REQUIRED_BY_SERVER = 0x00000005,
  SSL_WITH_USER_AUTH_REQUIRED_BY_SERVER = 0x00000006
};
 
typedef enum
{
  NEGO_STATE_INITIAL,
  NEGO_STATE_RDSTLS, /* RDSTLS (TLS implicit) */
  NEGO_STATE_AAD,    /* Azure AD Authentication (TLS implicit) */
  NEGO_STATE_EXT,    /* Extended NLA (NLA + TLS implicit) */
  NEGO_STATE_NLA,    /* Network Level Authentication (TLS implicit) */
  NEGO_STATE_TLS,    /* TLS Encryption without NLA */
  NEGO_STATE_RDP,    /* Standard Legacy RDP Encryption */
  NEGO_STATE_FAIL,   /* Negotiation failure */
  NEGO_STATE_FINAL
} NEGO_STATE;
 
/* RDP Negotiation Messages */
enum RDP_NEG_MSG
{
  /* X224_TPDU_CONNECTION_REQUEST */
  TYPE_RDP_NEG_REQ = 0x1,
  /* X224_TPDU_CONNECTION_CONFIRM */
  TYPE_RDP_NEG_RSP = 0x2,
  TYPE_RDP_NEG_FAILURE = 0x3,
  TYPE_RDP_CORRELATION_INFO = 0x6
};
 
typedef enum
{
  EXTENDED_CLIENT_DATA_SUPPORTED = 0x01,
  DYNVC_GFX_PROTOCOL_SUPPORTED = 0x02,
  RDP_NEGRSP_RESERVED = 0x04,
  RESTRICTED_ADMIN_MODE_SUPPORTED = 0x08,
  REDIRECTED_AUTHENTICATION_MODE_SUPPORTED = 0x10
} RdpNegRespFlags;
 
#define PRECONNECTION_PDU_V1_SIZE 16
#define PRECONNECTION_PDU_V2_MIN_SIZE (PRECONNECTION_PDU_V1_SIZE + 2)
 
#define PRECONNECTION_PDU_V1 1
#define PRECONNECTION_PDU_V2 2
 
#define RESTRICTED_ADMIN_MODE_REQUIRED 0x01
#define REDIRECTED_AUTHENTICATION_MODE_REQUIRED 0x02
#define CORRELATION_INFO_PRESENT 0x08
 
typedef struct rdp_nego rdpNego;
 
FREERDP_LOCAL BOOL nego_connect(rdpNego* nego);
FREERDP_LOCAL BOOL nego_disconnect(rdpNego* nego);
 
FREERDP_LOCAL int nego_recv(rdpTransport* transport, wStream* s, void* extra);
FREERDP_LOCAL BOOL nego_read_request(rdpNego* nego, wStream* s);
 
FREERDP_LOCAL BOOL nego_send_negotiation_request(rdpNego* nego);
FREERDP_LOCAL BOOL nego_send_negotiation_response(rdpNego* nego);
 
FREERDP_LOCAL void nego_free(rdpNego* nego);
 
WINPR_ATTR_MALLOC(nego_free, 1)
FREERDP_LOCAL rdpNego* nego_new(rdpTransport* transport);
 
FREERDP_LOCAL void nego_init(rdpNego* nego);
FREERDP_LOCAL BOOL nego_set_target(rdpNego* nego, const char* hostname, UINT16 port);
FREERDP_LOCAL void nego_set_negotiation_enabled(rdpNego* nego, BOOL NegotiateSecurityLayer);
FREERDP_LOCAL void nego_set_restricted_admin_mode_required(rdpNego* nego,
                                                           BOOL RestrictedAdminModeRequired);
FREERDP_LOCAL void nego_set_RCG_required(rdpNego* nego, BOOL enabled);
FREERDP_LOCAL void nego_set_RCG_supported(rdpNego* nego, BOOL enabled);
FREERDP_LOCAL BOOL nego_get_remoteCredentialGuard(rdpNego* nego);
FREERDP_LOCAL void nego_set_childsession_enabled(rdpNego* nego, BOOL ChildSessionEnabled);
FREERDP_LOCAL void nego_set_gateway_enabled(rdpNego* nego, BOOL GatewayEnabled);
FREERDP_LOCAL void nego_set_gateway_bypass_local(rdpNego* nego, BOOL GatewayBypassLocal);
FREERDP_LOCAL void nego_enable_rdp(rdpNego* nego, BOOL enable_rdp);
FREERDP_LOCAL void nego_enable_tls(rdpNego* nego, BOOL enable_tls);
FREERDP_LOCAL void nego_enable_nla(rdpNego* nego, BOOL enable_nla);
FREERDP_LOCAL void nego_enable_rdstls(rdpNego* nego, BOOL enable_rdstls);
FREERDP_LOCAL void nego_enable_aad(rdpNego* nego, BOOL enable_aad);
FREERDP_LOCAL void nego_enable_ext(rdpNego* nego, BOOL enable_ext);
FREERDP_LOCAL const BYTE* nego_get_routing_token(rdpNego* nego, DWORD* RoutingTokenLength);
FREERDP_LOCAL BOOL nego_set_routing_token(rdpNego* nego, const void* RoutingToken,
                                          DWORD RoutingTokenLength);
FREERDP_LOCAL BOOL nego_set_cookie(rdpNego* nego, const char* cookie);
FREERDP_LOCAL void nego_set_cookie_max_length(rdpNego* nego, UINT32 CookieMaxLength);
FREERDP_LOCAL void nego_set_send_preconnection_pdu(rdpNego* nego, BOOL SendPreconnectionPdu);
FREERDP_LOCAL void nego_set_preconnection_id(rdpNego* nego, UINT32 PreconnectionId);
FREERDP_LOCAL void nego_set_preconnection_blob(rdpNego* nego, const char* PreconnectionBlob);
 
FREERDP_LOCAL UINT32 nego_get_selected_protocol(rdpNego* nego);
FREERDP_LOCAL BOOL nego_set_selected_protocol(rdpNego* nego, UINT32 SelectedProtocol);
 
FREERDP_LOCAL UINT32 nego_get_requested_protocols(rdpNego* nego);
FREERDP_LOCAL BOOL nego_set_requested_protocols(rdpNego* nego, UINT32 RequestedProtocols);
 
FREERDP_LOCAL BOOL nego_update_settings_from_state(rdpNego* nego, rdpSettings* settings);
 
FREERDP_LOCAL BOOL nego_set_state(rdpNego* nego, NEGO_STATE state);
FREERDP_LOCAL NEGO_STATE nego_get_state(rdpNego* nego);
 
FREERDP_LOCAL SEC_WINNT_AUTH_IDENTITY* nego_get_identity(rdpNego* nego);
 
FREERDP_LOCAL void nego_free_nla(rdpNego* nego);
 
FREERDP_LOCAL const char* nego_protocol_to_str(UINT32 protocol, char* buffer, size_t size);
 
#endif /* FREERDP_LIB_CORE_NEGO_H */