/** * FreeRDP: A Remote Desktop Protocol Implementation * RDP Protocol Security Negotiation * * Copyright 2011-2012 Marc-Andre Moreau * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef FREERDP_LIB_CORE_NEGO_H #define FREERDP_LIB_CORE_NEGO_H #include "transport.h" #include #include #include #include #include /* 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 */