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freerdp/libfreerdp/core/peer.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RDP Server Peer
*
* Copyright 2011 Vic Lee
* Copyright 2014 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include <winpr/winsock.h>
#include "info.h"
#include "certificate.h"
#include <freerdp/log.h>
#include "rdp.h"
#include "peer.h"
#define TAG FREERDP_TAG("core.peer")
static HANDLE freerdp_peer_virtual_channel_open(freerdp_peer* client, const char* name,
UINT32 flags)
{
int length;
UINT32 index;
BOOL joined = FALSE;
rdpMcsChannel* mcsChannel = NULL;
rdpPeerChannel* peerChannel = NULL;
rdpMcs* mcs = client->context->rdp->mcs;
if (flags & WTS_CHANNEL_OPTION_DYNAMIC)
return NULL; /* not yet supported */
length = strnlen(name, 9);
if (length > 8)
return NULL; /* SVC maximum name length is 8 */
for (index = 0; index < mcs->channelCount; index++)
{
mcsChannel = &(mcs->channels[index]);
if (!mcsChannel->joined)
continue;
if (_strnicmp(name, mcsChannel->Name, length) == 0)
{
joined = TRUE;
break;
}
}
if (!joined)
return NULL; /* channel is not joined */
peerChannel = (rdpPeerChannel*)mcsChannel->handle;
if (peerChannel)
{
/* channel is already open */
return (HANDLE)peerChannel;
}
peerChannel = (rdpPeerChannel*)calloc(1, sizeof(rdpPeerChannel));
if (peerChannel)
{
peerChannel->index = index;
peerChannel->client = client;
peerChannel->channelFlags = flags;
peerChannel->channelId = mcsChannel->ChannelId;
peerChannel->mcsChannel = mcsChannel;
mcsChannel->handle = (void*)peerChannel;
}
return (HANDLE)peerChannel;
}
static BOOL freerdp_peer_virtual_channel_close(freerdp_peer* client, HANDLE hChannel)
{
rdpMcsChannel* mcsChannel = NULL;
rdpPeerChannel* peerChannel = NULL;
if (!hChannel)
return FALSE;
peerChannel = (rdpPeerChannel*)hChannel;
mcsChannel = peerChannel->mcsChannel;
mcsChannel->handle = NULL;
free(peerChannel);
return TRUE;
}
static int freerdp_peer_virtual_channel_write(freerdp_peer* client, HANDLE hChannel,
const BYTE* buffer, UINT32 length)
{
wStream* s;
UINT32 flags;
UINT32 chunkSize;
UINT32 maxChunkSize;
UINT32 totalLength;
rdpPeerChannel* peerChannel;
rdpMcsChannel* mcsChannel;
rdpRdp* rdp = client->context->rdp;
if (!hChannel)
return -1;
peerChannel = (rdpPeerChannel*)hChannel;
mcsChannel = peerChannel->mcsChannel;
if (peerChannel->channelFlags & WTS_CHANNEL_OPTION_DYNAMIC)
return -1; /* not yet supported */
maxChunkSize = rdp->settings->VirtualChannelChunkSize;
totalLength = length;
flags = CHANNEL_FLAG_FIRST;
while (length > 0)
{
s = rdp_send_stream_init(rdp);
if (!s)
return -1;
if (length > maxChunkSize)
{
chunkSize = rdp->settings->VirtualChannelChunkSize;
}
else
{
chunkSize = length;
flags |= CHANNEL_FLAG_LAST;
}
if (mcsChannel->options & CHANNEL_OPTION_SHOW_PROTOCOL)
flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
Stream_Write_UINT32(s, totalLength);
Stream_Write_UINT32(s, flags);
if (!Stream_EnsureRemainingCapacity(s, chunkSize))
{
Stream_Release(s);
return -1;
}
Stream_Write(s, buffer, chunkSize);
if (!rdp_send(rdp, s, peerChannel->channelId))
return -1;
buffer += chunkSize;
length -= chunkSize;
flags = 0;
}
return 1;
}
static void* freerdp_peer_virtual_channel_get_data(freerdp_peer* client, HANDLE hChannel)
{
rdpPeerChannel* peerChannel = (rdpPeerChannel*)hChannel;
if (!hChannel)
return NULL;
return peerChannel->extra;
}
static int freerdp_peer_virtual_channel_set_data(freerdp_peer* client, HANDLE hChannel, void* data)
{
rdpPeerChannel* peerChannel = (rdpPeerChannel*)hChannel;
if (!hChannel)
return -1;
peerChannel->extra = data;
return 1;
}
static BOOL freerdp_peer_initialize(freerdp_peer* client)
{
rdpRdp* rdp = client->context->rdp;
rdpSettings* settings = rdp->settings;
settings->ServerMode = TRUE;
settings->FrameAcknowledge = 0;
settings->LocalConnection = client->local;
if (settings->RdpKeyFile)
{
settings->RdpServerRsaKey = key_new(settings->RdpKeyFile);
if (!settings->RdpServerRsaKey)
{
WLog_ERR(TAG, "invalid RDP key file %s", settings->RdpKeyFile);
return FALSE;
}
}
else if (settings->RdpKeyContent)
{
settings->RdpServerRsaKey = key_new_from_content(settings->RdpKeyContent, NULL);
if (!settings->RdpServerRsaKey)
{
WLog_ERR(TAG, "invalid RDP key content");
return FALSE;
}
}
return TRUE;
}
static BOOL freerdp_peer_get_fds(freerdp_peer* client, void** rfds, int* rcount)
{
rdpTransport* transport = client->context->rdp->transport;
transport_get_fds(transport, rfds, rcount);
return TRUE;
}
static HANDLE freerdp_peer_get_event_handle(freerdp_peer* client)
{
HANDLE hEvent = NULL;
rdpTransport* transport = client->context->rdp->transport;
BIO_get_event(transport->frontBio, &hEvent);
return hEvent;
}
static DWORD freerdp_peer_get_event_handles(freerdp_peer* client, HANDLE* events, DWORD count)
{
return transport_get_event_handles(client->context->rdp->transport, events, count);
}
static BOOL freerdp_peer_check_fds(freerdp_peer* peer)
{
int status;
rdpRdp* rdp;
rdp = peer->context->rdp;
status = rdp_check_fds(rdp);
if (status < 0)
return FALSE;
return TRUE;
}
static BOOL peer_recv_data_pdu(freerdp_peer* client, wStream* s, UINT16 totalLength)
{
BYTE type;
UINT16 length;
UINT32 share_id;
BYTE compressed_type;
UINT16 compressed_len;
if (!rdp_read_share_data_header(s, &length, &type, &share_id, &compressed_type,
&compressed_len))
return FALSE;
#ifdef WITH_DEBUG_RDP
WLog_DBG(TAG, "recv %s Data PDU (0x%02" PRIX8 "), length: %" PRIu16 "",
data_pdu_type_to_string(type), type, length);
#endif
switch (type)
{
case DATA_PDU_TYPE_SYNCHRONIZE:
if (!rdp_recv_client_synchronize_pdu(client->context->rdp, s))
return FALSE;
break;
case DATA_PDU_TYPE_CONTROL:
if (!rdp_server_accept_client_control_pdu(client->context->rdp, s))
return FALSE;
break;
case DATA_PDU_TYPE_INPUT:
if (!input_recv(client->context->rdp->input, s))
return FALSE;
break;
case DATA_PDU_TYPE_BITMAP_CACHE_PERSISTENT_LIST:
if (!rdp_server_accept_client_persistent_key_list_pdu(client->context->rdp, s))
return FALSE;
break;
case DATA_PDU_TYPE_FONT_LIST:
if (!rdp_server_accept_client_font_list_pdu(client->context->rdp, s))
return FALSE;
break;
case DATA_PDU_TYPE_SHUTDOWN_REQUEST:
mcs_send_disconnect_provider_ultimatum(client->context->rdp->mcs);
return FALSE;
case DATA_PDU_TYPE_FRAME_ACKNOWLEDGE:
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT32(s, client->ack_frame_id);
IFCALL(client->update->SurfaceFrameAcknowledge, client->update->context,
client->ack_frame_id);
break;
case DATA_PDU_TYPE_REFRESH_RECT:
if (!update_read_refresh_rect(client->update, s))
return FALSE;
break;
case DATA_PDU_TYPE_SUPPRESS_OUTPUT:
if (!update_read_suppress_output(client->update, s))
return FALSE;
break;
default:
WLog_ERR(TAG, "Data PDU type %" PRIu8 "", type);
break;
}
return TRUE;
}
static int peer_recv_tpkt_pdu(freerdp_peer* client, wStream* s)
{
rdpRdp* rdp;
UINT16 length;
UINT16 pduType;
UINT16 pduSource;
UINT16 channelId;
UINT16 securityFlags = 0;
rdp = client->context->rdp;
if (!rdp_read_header(rdp, s, &length, &channelId))
{
WLog_ERR(TAG, "Incorrect RDP header.");
return -1;
}
rdp->inPackets++;
if (freerdp_shall_disconnect(rdp->instance))
return 0;
if (rdp->settings->UseRdpSecurityLayer)
{
if (!rdp_read_security_header(s, &securityFlags, &length))
return -1;
if (securityFlags & SEC_ENCRYPT)
{
if (!rdp_decrypt(rdp, s, &length, securityFlags))
{
WLog_ERR(TAG, "rdp_decrypt failed");
return -1;
}
}
}
if (channelId == MCS_GLOBAL_CHANNEL_ID)
{
UINT16 pduLength, remain;
if (!rdp_read_share_control_header(s, &pduLength, &remain, &pduType, &pduSource))
return -1;
client->settings->PduSource = pduSource;
WLog_DBG(TAG, "Received %s", pdu_type_to_str(pduType));
switch (pduType)
{
case PDU_TYPE_DATA:
if (!peer_recv_data_pdu(client, s, pduLength))
return -1;
break;
case PDU_TYPE_CONFIRM_ACTIVE:
if (!rdp_server_accept_confirm_active(rdp, s, pduLength))
return -1;
break;
case PDU_TYPE_FLOW_RESPONSE:
case PDU_TYPE_FLOW_STOP:
case PDU_TYPE_FLOW_TEST:
if (!Stream_SafeSeek(s, remain))
return -1;
break;
default:
WLog_ERR(TAG, "Client sent pduType %" PRIu16 "", pduType);
return -1;
}
}
else if ((rdp->mcs->messageChannelId > 0) && (channelId == rdp->mcs->messageChannelId))
{
if (!rdp->settings->UseRdpSecurityLayer)
if (!rdp_read_security_header(s, &securityFlags, NULL))
return -1;
return rdp_recv_message_channel_pdu(rdp, s, securityFlags);
}
else
{
if (!freerdp_channel_peer_process(client, s, channelId))
return -1;
}
if (!tpkt_ensure_stream_consumed(s, length))
return -1;
return 0;
}
static int peer_recv_fastpath_pdu(freerdp_peer* client, wStream* s)
{
rdpRdp* rdp;
UINT16 length;
rdpFastPath* fastpath;
rdp = client->context->rdp;
fastpath = rdp->fastpath;
fastpath_read_header_rdp(fastpath, s, &length);
if ((length == 0) || (length > Stream_GetRemainingLength(s)))
{
WLog_ERR(TAG, "incorrect FastPath PDU header length %" PRIu16 "", length);
return -1;
}
if (fastpath->encryptionFlags & FASTPATH_OUTPUT_ENCRYPTED)
{
if (!rdp_decrypt(rdp, s, &length,
(fastpath->encryptionFlags & FASTPATH_OUTPUT_SECURE_CHECKSUM)
? SEC_SECURE_CHECKSUM
: 0))
return -1;
}
rdp->inPackets++;
return fastpath_recv_inputs(fastpath, s);
}
static int peer_recv_pdu(freerdp_peer* client, wStream* s)
{
if (tpkt_verify_header(s))
return peer_recv_tpkt_pdu(client, s);
else
return peer_recv_fastpath_pdu(client, s);
}
static int peer_recv_callback(rdpTransport* transport, wStream* s, void* extra)
{
UINT32 SelectedProtocol;
freerdp_peer* client = (freerdp_peer*)extra;
rdpRdp* rdp = client->context->rdp;
switch (rdp_get_state(rdp))
{
case CONNECTION_STATE_INITIAL:
if (!rdp_server_accept_nego(rdp, s))
{
WLog_ERR(TAG, "%s: %s - rdp_server_accept_nego() fail", __FUNCTION__,
rdp_state_string(rdp_get_state(rdp)));
return -1;
}
SelectedProtocol = nego_get_selected_protocol(rdp->nego);
client->settings->NlaSecurity = (SelectedProtocol & PROTOCOL_HYBRID) ? TRUE : FALSE;
client->settings->TlsSecurity = (SelectedProtocol & PROTOCOL_SSL) ? TRUE : FALSE;
client->settings->RdpSecurity = (SelectedProtocol == PROTOCOL_RDP) ? TRUE : FALSE;
if (SelectedProtocol & PROTOCOL_HYBRID)
{
SEC_WINNT_AUTH_IDENTITY* identity = nego_get_identity(rdp->nego);
sspi_CopyAuthIdentity(&client->identity, identity);
IFCALLRET(client->Logon, client->authenticated, client, &client->identity, TRUE);
nego_free_nla(rdp->nego);
}
else
{
IFCALLRET(client->Logon, client->authenticated, client, &client->identity, FALSE);
}
break;
case CONNECTION_STATE_NEGO:
if (!rdp_server_accept_mcs_connect_initial(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_server_accept_mcs_connect_initial() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
case CONNECTION_STATE_MCS_CONNECT:
if (!rdp_server_accept_mcs_erect_domain_request(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_server_accept_mcs_erect_domain_request() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
case CONNECTION_STATE_MCS_ERECT_DOMAIN:
if (!rdp_server_accept_mcs_attach_user_request(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_server_accept_mcs_attach_user_request() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
case CONNECTION_STATE_MCS_ATTACH_USER:
if (!rdp_server_accept_mcs_channel_join_request(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_server_accept_mcs_channel_join_request() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
case CONNECTION_STATE_RDP_SECURITY_COMMENCEMENT:
if (rdp->settings->UseRdpSecurityLayer)
{
if (!rdp_server_establish_keys(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_server_establish_keys() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
}
rdp_server_transition_to_state(rdp, CONNECTION_STATE_SECURE_SETTINGS_EXCHANGE);
if (Stream_GetRemainingLength(s) > 0)
return peer_recv_callback(transport, s, extra);
break;
case CONNECTION_STATE_SECURE_SETTINGS_EXCHANGE:
if (!rdp_recv_client_info(rdp, s))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_recv_client_info() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
rdp_server_transition_to_state(rdp, CONNECTION_STATE_LICENSING);
return peer_recv_callback(transport, NULL, extra);
case CONNECTION_STATE_LICENSING:
{
LicenseCallbackResult res;
if (!client->LicenseCallback)
{
WLog_ERR(TAG,
"%s: LicenseCallback has been removed, assuming "
"licensing is ok (please fix your app)",
__FUNCTION__);
res = LICENSE_CB_COMPLETED;
}
else
res = client->LicenseCallback(client, s);
switch (res)
{
case LICENSE_CB_INTERNAL_ERROR:
WLog_ERR(TAG,
"%s: %s - callback internal "
"error, aborting",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
case LICENSE_CB_ABORT:
return -1;
case LICENSE_CB_IN_PROGRESS:
break;
case LICENSE_CB_COMPLETED:
rdp_server_transition_to_state(rdp, CONNECTION_STATE_CAPABILITIES_EXCHANGE);
return peer_recv_callback(transport, NULL, extra);
default:
WLog_ERR(TAG,
"%s: CONNECTION_STATE_LICENSING - unknown license callback "
"result %d",
__FUNCTION__, res);
break;
}
break;
}
case CONNECTION_STATE_CAPABILITIES_EXCHANGE:
if (!rdp->AwaitCapabilities)
{
if (client->Capabilities && !client->Capabilities(client))
return -1;
if (!rdp_send_demand_active(rdp))
{
WLog_ERR(TAG,
"%s: %s - "
"rdp_send_demand_active() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
rdp->AwaitCapabilities = TRUE;
if (s)
{
if (peer_recv_pdu(client, s) < 0)
{
WLog_ERR(TAG,
"%s: %s - "
"peer_recv_pdu() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
}
}
else
{
/**
* During reactivation sequence the client might sent some input or channel data
* before receiving the Deactivate All PDU. We need to process them as usual.
*/
if (peer_recv_pdu(client, s) < 0)
{
WLog_ERR(TAG,
"%s: %s - "
"peer_recv_pdu() fail",
__FUNCTION__, rdp_state_string(rdp_get_state(rdp)));
return -1;
}
}
break;
case CONNECTION_STATE_FINALIZATION:
if (peer_recv_pdu(client, s) < 0)
{
WLog_ERR(TAG, "%s: %s - peer_recv_pdu() fail", __FUNCTION__,
rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
case CONNECTION_STATE_ACTIVE:
if (peer_recv_pdu(client, s) < 0)
{
WLog_ERR(TAG, "%s: %s - peer_recv_pdu() fail", __FUNCTION__,
rdp_state_string(rdp_get_state(rdp)));
return -1;
}
break;
default:
WLog_ERR(TAG, "%s state %d", rdp_state_string(rdp_get_state(rdp)), rdp_get_state(rdp));
return -1;
}
return 0;
}
static BOOL freerdp_peer_close(freerdp_peer* client)
{
UINT32 SelectedProtocol;
/** if negotiation has failed, we're not MCS connected. So don't
* send anything else, or some mstsc will consider that as an error
*/
SelectedProtocol = nego_get_selected_protocol(client->context->rdp->nego);
if (SelectedProtocol & PROTOCOL_FAILED_NEGO)
return TRUE;
/**
* [MS-RDPBCGR] 1.3.1.4.2 User-Initiated Disconnection Sequence on Server
* The server first sends the client a Deactivate All PDU followed by an
* optional MCS Disconnect Provider Ultimatum PDU.
*/
if (!rdp_send_deactivate_all(client->context->rdp))
return FALSE;
if (freerdp_settings_get_bool(client->settings, FreeRDP_SupportErrorInfoPdu))
{
rdp_send_error_info(client->context->rdp);
}
return mcs_send_disconnect_provider_ultimatum(client->context->rdp->mcs);
}
static void freerdp_peer_disconnect(freerdp_peer* client)
{
rdpTransport* transport = client->context->rdp->transport;
transport_disconnect(transport);
}
static BOOL freerdp_peer_send_channel_data(freerdp_peer* client, UINT16 channelId, const BYTE* data,
size_t size)
{
return rdp_send_channel_data(client->context->rdp, channelId, data, size);
}
static BOOL freerdp_peer_send_server_redirection_pdu(
freerdp_peer* peer, UINT32 sessionId, const char* targetNetAddress, const char* routingToken,
const char* userName, const char* domain, const char* password, const char* targetFQDN,
const char* targetNetBiosName, DWORD tsvUrlLength, const BYTE* tsvUrl,
UINT32 targetNetAddressesCount, const char** targetNetAddresses)
{
wStream* s = rdp_send_stream_pdu_init(peer->context->rdp);
UINT16 length;
UINT32 redirFlags;
UINT32 targetNetAddressLength;
UINT32 loadBalanceInfoLength;
UINT32 userNameLength;
UINT32 domainLength;
UINT32 passwordLength;
UINT32 targetFQDNLength;
UINT32 targetNetBiosNameLength;
UINT32 targetNetAddressesLength;
UINT32* targetNetAddressesWLength;
LPWSTR targetNetAddressW = NULL;
LPWSTR userNameW = NULL;
LPWSTR domainW = NULL;
LPWSTR passwordW = NULL;
LPWSTR targetFQDNW = NULL;
LPWSTR targetNetBiosNameW = NULL;
LPWSTR* targetNetAddressesW = NULL;
length = 12; /* Flags (2) + length (2) + sessionId (4) + redirection flags (4) */
redirFlags = 0;
if (targetNetAddress)
{
redirFlags |= LB_TARGET_NET_ADDRESS;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)targetNetAddress, -1, &targetNetAddressW, 0);
targetNetAddressLength = (strlen(targetNetAddress) + 1) * sizeof(WCHAR);
length += 4 + targetNetAddressLength;
}
if (routingToken)
{
redirFlags |= LB_LOAD_BALANCE_INFO;
loadBalanceInfoLength =
13 + strlen(routingToken) + 2; /* Add routing token prefix and suffix */
length += 4 + loadBalanceInfoLength;
}
if (userName)
{
redirFlags |= LB_USERNAME;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)userName, -1, &userNameW, 0);
userNameLength = (strlen(userName) + 1) * sizeof(WCHAR);
length += 4 + userNameLength;
}
if (domain)
{
redirFlags |= LB_DOMAIN;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)domain, -1, &domainW, 0);
domainLength = (strlen(domain) + 1) * sizeof(WCHAR);
length += 4 + domainLength;
}
if (password)
{
redirFlags |= LB_PASSWORD;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)password, -1, &passwordW, 0);
passwordLength = (strlen(password) + 1) * sizeof(WCHAR);
length += 4 + passwordLength;
}
if (targetFQDN)
{
redirFlags |= LB_TARGET_FQDN;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)targetFQDN, -1, &targetFQDNW, 0);
targetFQDNLength = (strlen(targetFQDN) + 1) * sizeof(WCHAR);
length += 4 + targetFQDNLength;
}
if (targetNetBiosName)
{
redirFlags |= LB_TARGET_NETBIOS_NAME;
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)targetNetBiosName, -1, &targetNetBiosNameW, 0);
targetNetBiosNameLength = (strlen(targetNetBiosName) + 1) * sizeof(WCHAR);
length += 4 + targetNetBiosNameLength;
}
if (tsvUrl)
{
redirFlags |= LB_CLIENT_TSV_URL;
length += 4 + tsvUrlLength;
}
if (targetNetAddresses)
{
UINT32 i;
redirFlags |= LB_TARGET_NET_ADDRESSES;
targetNetAddressesLength = 0;
targetNetAddressesW = calloc(targetNetAddressesCount, sizeof(LPWSTR));
targetNetAddressesWLength = calloc(targetNetAddressesCount, sizeof(UINT32));
for (i = 0; i < targetNetAddressesCount; i++)
{
ConvertToUnicode(CP_UTF8, 0, (LPCSTR)targetNetAddresses[i], -1, &targetNetAddressesW[i],
0);
targetNetAddressesWLength[i] = (strlen(targetNetAddresses[i]) + 1) * sizeof(WCHAR);
targetNetAddressesLength += 4 + targetNetAddressesWLength[i];
}
length += 4 + 4 + targetNetAddressesLength;
}
Stream_Write_UINT16(s, 0);
Stream_Write_UINT16(s, SEC_REDIRECTION_PKT);
Stream_Write_UINT16(s, length);
if (!Stream_EnsureRemainingCapacity(s, length))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
goto fail;
}
if (sessionId)
Stream_Write_UINT32(s, sessionId);
else
Stream_Write_UINT32(s, 0);
Stream_Write_UINT32(s, redirFlags);
if (redirFlags & LB_TARGET_NET_ADDRESS)
{
Stream_Write_UINT32(s, targetNetAddressLength);
Stream_Write(s, targetNetAddressW, targetNetAddressLength);
free(targetNetAddressW);
}
if (redirFlags & LB_LOAD_BALANCE_INFO)
{
Stream_Write_UINT32(s, loadBalanceInfoLength);
Stream_Write(s, "Cookie: msts=", 13);
Stream_Write(s, routingToken, strlen(routingToken));
Stream_Write_UINT8(s, 0x0d);
Stream_Write_UINT8(s, 0x0a);
}
if (redirFlags & LB_USERNAME)
{
Stream_Write_UINT32(s, userNameLength);
Stream_Write(s, userNameW, userNameLength);
free(userNameW);
}
if (redirFlags & LB_DOMAIN)
{
Stream_Write_UINT32(s, domainLength);
Stream_Write(s, domainW, domainLength);
free(domainW);
}
if (redirFlags & LB_PASSWORD)
{
Stream_Write_UINT32(s, passwordLength);
Stream_Write(s, passwordW, passwordLength);
free(passwordW);
}
if (redirFlags & LB_TARGET_FQDN)
{
Stream_Write_UINT32(s, targetFQDNLength);
Stream_Write(s, targetFQDNW, targetFQDNLength);
free(targetFQDNW);
}
if (redirFlags & LB_TARGET_NETBIOS_NAME)
{
Stream_Write_UINT32(s, targetNetBiosNameLength);
Stream_Write(s, targetNetBiosNameW, targetNetBiosNameLength);
free(targetNetBiosNameW);
}
if (redirFlags & LB_CLIENT_TSV_URL)
{
Stream_Write_UINT32(s, tsvUrlLength);
Stream_Write(s, tsvUrl, tsvUrlLength);
}
if (redirFlags & LB_TARGET_NET_ADDRESSES)
{
UINT32 i;
Stream_Write_UINT32(s, targetNetAddressesLength);
Stream_Write_UINT32(s, targetNetAddressesCount);
for (i = 0; i < targetNetAddressesCount; i++)
{
Stream_Write_UINT32(s, targetNetAddressesWLength[i]);
Stream_Write(s, targetNetAddressesW[i], targetNetAddressesWLength[i]);
free(targetNetAddressesW[i]);
}
free(targetNetAddressesW);
free(targetNetAddressesWLength);
}
Stream_Write_UINT8(s, 0);
rdp_send_pdu(peer->context->rdp, s, PDU_TYPE_SERVER_REDIRECTION, 0);
return TRUE;
fail:
free(targetNetAddressW);
free(userNameW);
free(domainW);
free(passwordW);
free(targetFQDNW);
free(targetNetBiosNameW);
free(targetNetAddressesWLength);
if (targetNetAddressesCount > 0)
{
UINT32 i;
for (i = 0; i < targetNetAddressesCount; i++)
free(targetNetAddressesW[i]);
free(targetNetAddressesW);
}
return FALSE;
}
static BOOL freerdp_peer_is_write_blocked(freerdp_peer* peer)
{
rdpTransport* transport = peer->context->rdp->transport;
return transport_is_write_blocked(transport);
}
static int freerdp_peer_drain_output_buffer(freerdp_peer* peer)
{
rdpTransport* transport = peer->context->rdp->transport;
return transport_drain_output_buffer(transport);
}
static BOOL freerdp_peer_has_more_to_read(freerdp_peer* peer)
{
return peer->context->rdp->transport->haveMoreBytesToRead;
}
static LicenseCallbackResult freerdp_peer_nolicense(freerdp_peer* peer, wStream* s)
{
rdpRdp* rdp = peer->context->rdp;
if (!license_send_valid_client_error_packet(rdp))
{
WLog_ERR(TAG, "freerdp_peer_nolicense: license_send_valid_client_error_packet() failed");
return LICENSE_CB_ABORT;
}
return LICENSE_CB_COMPLETED;
}
BOOL freerdp_peer_context_new(freerdp_peer* client)
{
rdpRdp* rdp;
rdpContext* context;
BOOL ret = TRUE;
if (!client)
return FALSE;
if (!(context = (rdpContext*)calloc(1, client->ContextSize)))
goto fail_context;
client->context = context;
context->peer = client;
context->ServerMode = TRUE;
context->settings = client->settings;
if (!(context->metrics = metrics_new(context)))
goto fail_metrics;
if (!(rdp = rdp_new(context)))
goto fail_rdp;
client->input = rdp->input;
client->update = rdp->update;
client->settings = rdp->settings;
client->autodetect = rdp->autodetect;
context->rdp = rdp;
context->input = client->input;
context->update = client->update;
context->settings = client->settings;
context->autodetect = client->autodetect;
client->update->context = context;
client->input->context = context;
client->autodetect->context = context;
update_register_server_callbacks(client->update);
autodetect_register_server_callbacks(client->autodetect);
if (!(context->errorDescription = calloc(1, 500)))
{
WLog_ERR(TAG, "calloc failed!");
goto fail_error_description;
}
if (!transport_attach(rdp->transport, client->sockfd))
goto fail_transport_attach;
rdp->transport->ReceiveCallback = peer_recv_callback;
rdp->transport->ReceiveExtra = client;
transport_set_blocking_mode(rdp->transport, FALSE);
client->IsWriteBlocked = freerdp_peer_is_write_blocked;
client->DrainOutputBuffer = freerdp_peer_drain_output_buffer;
client->HasMoreToRead = freerdp_peer_has_more_to_read;
client->LicenseCallback = freerdp_peer_nolicense;
IFCALLRET(client->ContextNew, ret, client, client->context);
if (ret)
return TRUE;
WLog_ERR(TAG, "ContextNew callback failed");
fail_transport_attach:
free(context->errorDescription);
fail_error_description:
rdp_free(client->context->rdp);
fail_rdp:
metrics_free(context->metrics);
fail_metrics:
free(client->context);
fail_context:
client->context = NULL;
WLog_ERR(TAG, "Failed to create new peer context");
return FALSE;
}
void freerdp_peer_context_free(freerdp_peer* client)
{
IFCALL(client->ContextFree, client, client->context);
if (client->context)
{
free(client->context->errorDescription);
client->context->errorDescription = NULL;
rdp_free(client->context->rdp);
client->context->rdp = NULL;
metrics_free(client->context->metrics);
client->context->metrics = NULL;
free(client->context);
client->context = NULL;
}
}
static const char* os_major_type_to_string(UINT16 osMajorType)
{
switch (osMajorType)
{
case OSMAJORTYPE_UNSPECIFIED:
return "Unspecified platform";
case OSMAJORTYPE_WINDOWS:
return "Windows platform";
case OSMAJORTYPE_OS2:
return "OS/2 platform";
case OSMAJORTYPE_MACINTOSH:
return "Macintosh platform";
case OSMAJORTYPE_UNIX:
return "UNIX platform";
case OSMAJORTYPE_IOS:
return "iOS platform";
case OSMAJORTYPE_OSX:
return "OS X platform";
case OSMAJORTYPE_ANDROID:
return "Android platform";
case OSMAJORTYPE_CHROME_OS:
return "Chrome OS platform";
}
return "Unknown platform";
}
const char* freerdp_peer_os_major_type_string(freerdp_peer* client)
{
rdpContext* context;
UINT16 osMajorType;
WINPR_ASSERT(client);
context = client->context;
WINPR_ASSERT(context);
WINPR_ASSERT(context->settings);
osMajorType = freerdp_settings_get_uint32(context->settings, FreeRDP_OsMajorType);
return os_major_type_to_string(osMajorType);
}
static const char* os_minor_type_to_string(UINT16 osMinorType)
{
switch (osMinorType)
{
case OSMINORTYPE_UNSPECIFIED:
return "Unspecified version";
case OSMINORTYPE_WINDOWS_31X:
return "Windows 3.1x";
case OSMINORTYPE_WINDOWS_95:
return "Windows 95";
case OSMINORTYPE_WINDOWS_NT:
return "Windows NT";
case OSMINORTYPE_OS2_V21:
return "OS/2 2.1";
case OSMINORTYPE_POWER_PC:
return "PowerPC";
case OSMINORTYPE_MACINTOSH:
return "Macintosh";
case OSMINORTYPE_NATIVE_XSERVER:
return "Native X Server";
case OSMINORTYPE_PSEUDO_XSERVER:
return "Pseudo X Server";
case OSMINORTYPE_WINDOWS_RT:
return "Windows RT";
}
return "Unknown version";
}
const char* freerdp_peer_os_minor_type_string(freerdp_peer* client)
{
rdpContext* context;
UINT16 osMinorType;
WINPR_ASSERT(client);
context = client->context;
WINPR_ASSERT(context);
WINPR_ASSERT(context->settings);
osMinorType = freerdp_settings_get_uint32(context->settings, FreeRDP_OsMinorType);
return os_minor_type_to_string(osMinorType);
}
freerdp_peer* freerdp_peer_new(int sockfd)
{
UINT32 option_value;
socklen_t option_len;
freerdp_peer* client;
client = (freerdp_peer*)calloc(1, sizeof(freerdp_peer));
if (!client)
return NULL;
option_value = TRUE;
option_len = sizeof(option_value);
setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (void*)&option_value, option_len);
if (client)
{
client->sockfd = sockfd;
client->ContextSize = sizeof(rdpContext);
client->Initialize = freerdp_peer_initialize;
client->GetFileDescriptor = freerdp_peer_get_fds;
client->GetEventHandle = freerdp_peer_get_event_handle;
client->GetEventHandles = freerdp_peer_get_event_handles;
client->CheckFileDescriptor = freerdp_peer_check_fds;
client->Close = freerdp_peer_close;
client->Disconnect = freerdp_peer_disconnect;
client->SendChannelData = freerdp_peer_send_channel_data;
client->SendServerRedirection = freerdp_peer_send_server_redirection_pdu;
client->IsWriteBlocked = freerdp_peer_is_write_blocked;
client->DrainOutputBuffer = freerdp_peer_drain_output_buffer;
client->HasMoreToRead = freerdp_peer_has_more_to_read;
client->VirtualChannelOpen = freerdp_peer_virtual_channel_open;
client->VirtualChannelClose = freerdp_peer_virtual_channel_close;
client->VirtualChannelWrite = freerdp_peer_virtual_channel_write;
client->VirtualChannelRead = NULL; /* must be defined by server application */
client->VirtualChannelGetData = freerdp_peer_virtual_channel_get_data;
client->VirtualChannelSetData = freerdp_peer_virtual_channel_set_data;
}
return client;
}
void freerdp_peer_free(freerdp_peer* client)
{
if (!client)
return;
free(client);
}
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