boolean rdp_read_header(rdpRdp* rdp, STREAM* s, uint16* length, uint16* channel_id)
{
uint16 initiator;
enum DomainMCSPDU MCSPDU;
MCSPDU = (rdp->settings->server_mode) ? DomainMCSPDU_SendDataRequest : DomainMCSPDU_SendDataIndication;
mcs_read_domain_mcspdu_header(s, &MCSPDU, length);
if (*length - 8 > stream_get_left(s))
return false;
if (MCSPDU == DomainMCSPDU_DisconnectProviderUltimatum)
{
uint8 reason;
(void) per_read_enumerated(s, &reason, 0);
rdp->disconnect = true;
return true;
}
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, channel_id, 0); /* channelId */
stream_seek(s, 1); /* dataPriority + Segmentation (0x70) */
per_read_length(s, length); /* userData (OCTET_STRING) */
if (*length > stream_get_left(s))
return false;
return true;
}
tbool rdp_read_header(rdpRdp* rdp, STREAM* s, uint16* length, uint16* channel_id)
{
uint8 reason;
uint16 initiator;
enum DomainMCSPDU MCSPDU;
MCSPDU = (rdp->settings->server_mode) ? DomainMCSPDU_SendDataRequest : DomainMCSPDU_SendDataIndication;
if (!mcs_read_domain_mcspdu_header(s, &MCSPDU, length))
{
LLOGLN(0, ("rdp_read_header: mcs_read_domain_mcspdu_header failed"));
return false;
}
if (*length - 8 > stream_get_left(s))
{
LLOGLN(0, ("rdp_read_header: parse error"));
return false;
}
if (MCSPDU == DomainMCSPDU_DisconnectProviderUltimatum)
{
if (!per_read_enumerated(s, &reason, 0))
{
LLOGLN(0, ("rdp_read_header: per_read_enumerated failed"));
return false;
}
rdp->disconnect = true;
*channel_id = MCS_GLOBAL_CHANNEL_ID;
return true;
}
if (stream_get_left(s) < 5)
{
LLOGLN(0, ("rdp_read_header: parse error"));
return false;
}
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, channel_id, 0); /* channelId */
stream_seek(s, 1); /* dataPriority + Segmentation (0x70) */
if (!per_read_length(s, length)) /* userData (OCTET_STRING) */
{
LLOGLN(0, ("rdp_read_header: per_read_length failed"));
return false;
}
if (*length > stream_get_left(s))
{
return false;
LLOGLN(0, ("rdp_read_header: parse error"));
}
return true;
}
BOOL gcc_read_conference_create_response(wStream* s, rdpMcs* mcs)
{
UINT16 length;
UINT32 tag;
UINT16 nodeID;
BYTE result;
BYTE choice;
BYTE number;
/* ConnectData */
if (!per_read_choice(s, &choice) ||
!per_read_object_identifier(s, t124_02_98_oid))
return FALSE;
/* ConnectData::connectPDU (OCTET_STRING) */
if (!per_read_length(s, &length))
return FALSE;
/* ConnectGCCPDU */
if (!per_read_choice(s, &choice))
return FALSE;
/* ConferenceCreateResponse::nodeID (UserID) */
if (!per_read_integer16(s, &nodeID, 1001))
return FALSE;
/* ConferenceCreateResponse::tag (INTEGER) */
if (!per_read_integer(s, &tag))
return FALSE;
/* ConferenceCreateResponse::result (ENUMERATED) */
if (!per_read_enumerated(s, &result, MCS_Result_enum_length))
return FALSE;
/* number of UserData sets */
if (!per_read_number_of_sets(s, &number))
return FALSE;
/* UserData::value present + select h221NonStandard (1) */
if (!per_read_choice(s, &choice))
return FALSE;
/* h221NonStandard */
if (!per_read_octet_string(s, h221_sc_key, 4, 4)) /* h221NonStandard, server-to-client H.221 key, "McDn" */
return FALSE;
/* userData (OCTET_STRING) */
if (!per_read_length(s, &length))
return FALSE;
if (!gcc_read_server_data_blocks(s, mcs, length))
{
WLog_ERR(TAG, "gcc_read_conference_create_response: gcc_read_server_data_blocks failed");
return FALSE;
}
return TRUE;
}
boolean rdp_read_header(rdpRdp* rdp, STREAM* s, uint16* length, uint16* channel_id)
{
uint16 initiator;
enum DomainMCSPDU MCSPDU;
MCSPDU = (rdp->settings->server_mode) ? DomainMCSPDU_SendDataRequest : DomainMCSPDU_SendDataIndication;
mcs_read_domain_mcspdu_header(s, &MCSPDU, length);
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, channel_id, 0); /* channelId */
stream_seek(s, 1); /* dataPriority + Segmentation (0x70) */
per_read_length(s, length); /* userData (OCTET_STRING) */
if (*length > stream_get_left(s))
return False;
return True;
}
BOOL rdp_read_header(rdpRdp* rdp, wStream* s, UINT16* length, UINT16* channel_id)
{
UINT16 initiator;
enum DomainMCSPDU MCSPDU;
MCSPDU = (rdp->settings->ServerMode) ? DomainMCSPDU_SendDataRequest : DomainMCSPDU_SendDataIndication;
if (!mcs_read_domain_mcspdu_header(s, &MCSPDU, length))
{
if (MCSPDU != DomainMCSPDU_DisconnectProviderUltimatum)
return FALSE;
}
if (*length - 8 > Stream_GetRemainingLength(s))
return FALSE;
if (MCSPDU == DomainMCSPDU_DisconnectProviderUltimatum)
{
BYTE reason;
(void) per_read_enumerated(s, &reason, 0);
DEBUG_RDP("DisconnectProviderUltimatum from server, reason code 0x%02x\n", reason);
rdp->disconnect = TRUE;
return TRUE;
}
if (Stream_GetRemainingLength(s) < 5)
return FALSE;
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, channel_id, 0); /* channelId */
Stream_Seek(s, 1); /* dataPriority + Segmentation (0x70) */
if (!per_read_length(s, length)) /* userData (OCTET_STRING) */
return FALSE;
if (*length > Stream_GetRemainingLength(s))
return FALSE;
return TRUE;
}
boolean gcc_read_conference_create_response(STREAM* s, rdpSettings* settings)
{
uint16 length;
uint32 tag;
uint16 nodeID;
uint8 result;
uint8 choice;
uint8 number;
/* ConnectData */
per_read_choice(s, &choice);
per_read_object_identifier(s, t124_02_98_oid);
/* ConnectData::connectPDU (OCTET_STRING) */
per_read_length(s, &length);
/* ConnectGCCPDU */
per_read_choice(s, &choice);
/* ConferenceCreateResponse::nodeID (UserID) */
per_read_integer16(s, &nodeID, 1001);
/* ConferenceCreateResponse::tag (INTEGER) */
per_read_integer(s, &tag);
/* ConferenceCreateResponse::result (ENUMERATED) */
per_read_enumerated(s, &result, MCS_Result_enum_length);
/* number of UserData sets */
per_read_number_of_sets(s, &number);
/* UserData::value present + select h221NonStandard (1) */
per_read_choice(s, &choice);
/* h221NonStandard */
if (!per_read_octet_string(s, h221_sc_key, 4, 4)) /* h221NonStandard, server-to-client H.221 key, "McDn" */
return false;
/* userData (OCTET_STRING) */
per_read_length(s, &length);
if (!gcc_read_server_data_blocks(s, settings, length))
{
printf("gcc_read_conference_create_response: gcc_read_server_data_blocks failed\n");
return false;
}
return true;
}
void rdp_recv(rdpRdp* rdp)
{
STREAM* s;
int length;
uint16 pduType;
uint16 pduLength;
uint16 initiator;
uint16 channelId;
uint16 sec_flags;
enum DomainMCSPDU MCSPDU;
s = transport_recv_stream_init(rdp->transport, 4096);
transport_read(rdp->transport, s);
MCSPDU = DomainMCSPDU_SendDataIndication;
mcs_read_domain_mcspdu_header(s, &MCSPDU, &length);
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, &channelId, 0); /* channelId */
stream_seek(s, 1); /* dataPriority + Segmentation (0x70) */
per_read_length(s, &pduLength); /* userData (OCTET_STRING) */
if (rdp->connected != True)
{
rdp_read_security_header(s, &sec_flags);
if (sec_flags & SEC_PKT_MASK)
{
switch (sec_flags & SEC_PKT_MASK)
{
case SEC_LICENSE_PKT:
license_recv(rdp->license, s);
break;
case SEC_REDIRECTION_PKT:
rdp_read_redirection_packet(rdp, s);
break;
default:
printf("incorrect security flags: 0x%04X\n", sec_flags);
break;
}
}
}
else
{
rdp_read_share_control_header(s, &pduLength, &pduType, &rdp->settings->pdu_source);
switch (pduType)
{
case PDU_TYPE_DATA:
rdp_read_data_pdu(rdp, s);
break;
case PDU_TYPE_DEMAND_ACTIVE:
rdp_recv_demand_active(rdp, s, rdp->settings);
break;
case PDU_TYPE_DEACTIVATE_ALL:
rdp_read_deactivate_all(s, rdp->settings);
break;
case PDU_TYPE_SERVER_REDIRECTION:
rdp_read_enhanced_security_redirection_packet(rdp, s);
break;
default:
printf("incorrect PDU type: 0x%04X\n", pduType);
break;
}
}
}
BOOL rdp_read_header(rdpRdp* rdp, wStream* s, UINT16* length, UINT16* channelId)
{
BYTE byte;
UINT16 initiator;
enum DomainMCSPDU MCSPDU;
MCSPDU = (rdp->settings->ServerMode) ? DomainMCSPDU_SendDataRequest : DomainMCSPDU_SendDataIndication;
if (!mcs_read_domain_mcspdu_header(s, &MCSPDU, length))
{
if (MCSPDU != DomainMCSPDU_DisconnectProviderUltimatum)
return FALSE;
}
if ((size_t) (*length - 8) > Stream_GetRemainingLength(s))
return FALSE;
if (MCSPDU == DomainMCSPDU_DisconnectProviderUltimatum)
{
int reason = 0;
TerminateEventArgs e;
rdpContext* context;
if (!mcs_recv_disconnect_provider_ultimatum(rdp->mcs, s, &reason))
return FALSE;
if (rdp->instance == NULL)
{
rdp->disconnect = TRUE;
return FALSE;
}
context = rdp->instance->context;
if (rdp->errorInfo == ERRINFO_SUCCESS)
{
/**
* Some servers like Windows Server 2008 R2 do not send the error info pdu
* when the user logs off like they should. Map DisconnectProviderUltimatum
* to a ERRINFO_LOGOFF_BY_USER when the errinfo code is ERRINFO_SUCCESS.
*/
if (reason == MCS_Reason_provider_initiated)
rdp_set_error_info(rdp, ERRINFO_RPC_INITIATED_DISCONNECT);
else if (reason == MCS_Reason_user_requested)
rdp_set_error_info(rdp, ERRINFO_LOGOFF_BY_USER);
else
rdp_set_error_info(rdp, ERRINFO_RPC_INITIATED_DISCONNECT);
}
DEBUG_WARN( "DisconnectProviderUltimatum: reason: %d\n", reason);
rdp->disconnect = TRUE;
EventArgsInit(&e, "freerdp");
e.code = 0;
PubSub_OnTerminate(context->pubSub, context, &e);
return TRUE;
}
if (Stream_GetRemainingLength(s) < 5)
return FALSE;
per_read_integer16(s, &initiator, MCS_BASE_CHANNEL_ID); /* initiator (UserId) */
per_read_integer16(s, channelId, 0); /* channelId */
Stream_Read_UINT8(s, byte); /* dataPriority + Segmentation (0x70) */
if (!per_read_length(s, length)) /* userData (OCTET_STRING) */
return FALSE;
if (*length > Stream_GetRemainingLength(s))
return FALSE;
return TRUE;
}
