void rpc_free(rdpRpc* rpc)
{
if (rpc != NULL)
{
rpc_client_stop(rpc);
if (rpc->State >= RPC_CLIENT_STATE_CONTEXT_NEGOTIATED)
{
ntlm_client_uninit(rpc->ntlm);
ntlm_free(rpc->ntlm);
}
rpc_client_virtual_connection_free(rpc->VirtualConnection);
ArrayList_Clear(rpc->VirtualConnectionCookieTable);
ArrayList_Free(rpc->VirtualConnectionCookieTable);
free(rpc);
}
}
void rdg_free(rdpRdg* rdg)
{
if (!rdg)
return;
if (rdg->tlsOut)
{
tls_free(rdg->tlsOut);
rdg->tlsOut = NULL;
}
if (rdg->tlsIn)
{
tls_free(rdg->tlsIn);
rdg->tlsIn = NULL;
}
if (rdg->http)
{
http_context_free(rdg->http);
rdg->http = NULL;
}
if (rdg->ntlm)
{
ntlm_free(rdg->ntlm);
rdg->ntlm = NULL;
}
if (rdg->readEvent)
{
CloseHandle(rdg->readEvent);
rdg->readEvent = NULL;
}
DeleteCriticalSection(&rdg->writeSection);
free(rdg);
}
void rpc_free(rdpRpc* rpc)
{
if (rpc)
{
rpc_client_free(rpc);
if (rpc->ntlm)
{
ntlm_client_uninit(rpc->ntlm);
ntlm_free(rpc->ntlm);
rpc->ntlm = NULL;
}
if (rpc->VirtualConnection)
{
rpc_virtual_connection_free(rpc->VirtualConnection);
rpc->VirtualConnection = NULL;
}
free(rpc);
}
}
BOOL rpc_ntlm_http_out_connect(rdpRpc* rpc)
{
rdpNtlm* ntlm = rpc->NtlmHttpOut->ntlm;
rpc_ncacn_http_ntlm_init(rpc, TSG_CHANNEL_OUT);
/* Send OUT Channel Request */
rpc_ncacn_http_send_out_channel_request(rpc);
/* Receive OUT Channel Response */
rpc_ncacn_http_recv_out_channel_response(rpc);
/* Send OUT Channel Request */
rpc_ncacn_http_send_out_channel_request(rpc);
ntlm_client_uninit(ntlm);
ntlm_free(ntlm);
return TRUE;
}
void rdg_free(rdpRdg* rdg)
{
if (!rdg)
return;
if (rdg->tlsOut)
{
tls_free(rdg->tlsOut);
rdg->tlsOut = NULL;
}
if (rdg->tlsIn)
{
tls_free(rdg->tlsIn);
rdg->tlsIn = NULL;
}
if (rdg->http)
{
http_context_free(rdg->http);
rdg->http = NULL;
}
if (rdg->ntlm)
{
ntlm_free(rdg->ntlm);
rdg->ntlm = NULL;
}
if (rdg->readEvent)
{
CloseHandle(rdg->readEvent);
rdg->readEvent = NULL;
}
free(rdg);
}
static BOOL rdg_establish_data_connection(rdpRdg* rdg, rdpTls* tls,
const char* method, const char* peerAddress, int timeout, BOOL* rpcFallback)
{
HttpResponse* response = NULL;
int statusCode;
int bodyLength;
if (!rdg_tls_connect(rdg, tls, peerAddress, timeout))
return FALSE;
if (rdg->extAuth == HTTP_EXTENDED_AUTH_NONE)
{
if (!rdg_ntlm_init(rdg, tls))
return FALSE;
if (!rdg_send_http_request(rdg, tls, method, NULL))
return FALSE;
response = http_response_recv(tls);
if (!response)
return FALSE;
if (response->StatusCode == HTTP_STATUS_NOT_FOUND)
{
WLog_INFO(TAG, "RD Gateway does not support HTTP transport.");
if (rpcFallback) *rpcFallback = TRUE;
http_response_free(response);
return FALSE;
}
if (!rdg_handle_ntlm_challenge(rdg->ntlm, response))
{
http_response_free(response);
return FALSE;
}
http_response_free(response);
}
if (!rdg_send_http_request(rdg, tls, method, NULL))
return FALSE;
ntlm_free(rdg->ntlm);
rdg->ntlm = NULL;
response = http_response_recv(tls);
if (!response)
return FALSE;
statusCode = response->StatusCode;
bodyLength = response->BodyLength;
http_response_free(response);
WLog_DBG(TAG, "%s authorization result: %d", method, statusCode);
if (statusCode != HTTP_STATUS_OK)
return FALSE;
if (strcmp(method, "RDG_OUT_DATA") == 0)
{
if (!rdg_skip_seed_payload(tls, bodyLength))
return FALSE;
}
else
{
if (!rdg_send_http_request(rdg, tls, method, "chunked"))
return FALSE;
}
return TRUE;
}
int rpc_send_bind_pdu(rdpRpc* rpc)
{
int status;
BYTE* buffer;
UINT32 offset;
UINT32 length;
RpcClientCall* clientCall;
p_cont_elem_t* p_cont_elem;
rpcconn_bind_hdr_t* bind_pdu;
BOOL promptPassword = FALSE;
rdpSettings* settings = rpc->settings;
freerdp* instance = (freerdp*) settings->instance;
RpcVirtualConnection* connection = rpc->VirtualConnection;
RpcInChannel* inChannel = connection->DefaultInChannel;
WLog_DBG(TAG, "Sending Bind PDU");
ntlm_free(rpc->ntlm);
rpc->ntlm = ntlm_new();
if (!rpc->ntlm)
return -1;
if ((!settings->GatewayPassword) || (!settings->GatewayUsername)
|| (!strlen(settings->GatewayPassword)) || (!strlen(settings->GatewayUsername)))
{
promptPassword = TRUE;
}
if (promptPassword)
{
if (instance->GatewayAuthenticate)
{
BOOL proceed = instance->GatewayAuthenticate(instance,
&settings->GatewayUsername, &settings->GatewayPassword, &settings->GatewayDomain);
if (!proceed)
{
freerdp_set_last_error(instance->context, FREERDP_ERROR_CONNECT_CANCELLED);
return 0;
}
if (settings->GatewayUseSameCredentials)
{
settings->Username = _strdup(settings->GatewayUsername);
settings->Domain = _strdup(settings->GatewayDomain);
settings->Password = _strdup(settings->GatewayPassword);
if (!settings->Username || !settings->Domain || settings->Password)
return -1;
}
}
}
if (!ntlm_client_init(rpc->ntlm, FALSE, settings->GatewayUsername, settings->GatewayDomain, settings->GatewayPassword, NULL))
return -1;
if (!ntlm_client_make_spn(rpc->ntlm, NULL, settings->GatewayHostname))
return -1;
if (!ntlm_authenticate(rpc->ntlm))
return -1;
bind_pdu = (rpcconn_bind_hdr_t*) calloc(1, sizeof(rpcconn_bind_hdr_t));
if (!bind_pdu)
return -1;
rpc_pdu_header_init(rpc, (rpcconn_hdr_t*) bind_pdu);
bind_pdu->auth_length = (UINT16) rpc->ntlm->outputBuffer[0].cbBuffer;
bind_pdu->auth_verifier.auth_value = rpc->ntlm->outputBuffer[0].pvBuffer;
bind_pdu->ptype = PTYPE_BIND;
bind_pdu->pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG | PFC_SUPPORT_HEADER_SIGN | PFC_CONC_MPX;
bind_pdu->call_id = 2;
bind_pdu->max_xmit_frag = rpc->max_xmit_frag;
bind_pdu->max_recv_frag = rpc->max_recv_frag;
bind_pdu->assoc_group_id = 0;
bind_pdu->p_context_elem.n_context_elem = 2;
bind_pdu->p_context_elem.reserved = 0;
bind_pdu->p_context_elem.reserved2 = 0;
bind_pdu->p_context_elem.p_cont_elem = calloc(bind_pdu->p_context_elem.n_context_elem, sizeof(p_cont_elem_t));
if (!bind_pdu->p_context_elem.p_cont_elem)
return -1;
p_cont_elem = &bind_pdu->p_context_elem.p_cont_elem[0];
p_cont_elem->p_cont_id = 0;
p_cont_elem->n_transfer_syn = 1;
p_cont_elem->reserved = 0;
CopyMemory(&(p_cont_elem->abstract_syntax.if_uuid), &TSGU_UUID, sizeof(p_uuid_t));
p_cont_elem->abstract_syntax.if_version = TSGU_SYNTAX_IF_VERSION;
p_cont_elem->transfer_syntaxes = malloc(sizeof(p_syntax_id_t));
if (!p_cont_elem->transfer_syntaxes)
return -1;
CopyMemory(&(p_cont_elem->transfer_syntaxes[0].if_uuid), &NDR_UUID, sizeof(p_uuid_t));
p_cont_elem->transfer_syntaxes[0].if_version = NDR_SYNTAX_IF_VERSION;
p_cont_elem = &bind_pdu->p_context_elem.p_cont_elem[1];
p_cont_elem->p_cont_id = 1;
p_cont_elem->n_transfer_syn = 1;
p_cont_elem->reserved = 0;
CopyMemory(&(p_cont_elem->abstract_syntax.if_uuid), &TSGU_UUID, sizeof(p_uuid_t));
p_cont_elem->abstract_syntax.if_version = TSGU_SYNTAX_IF_VERSION;
p_cont_elem->transfer_syntaxes = malloc(sizeof(p_syntax_id_t));
if (!p_cont_elem->transfer_syntaxes)
return -1;
CopyMemory(&(p_cont_elem->transfer_syntaxes[0].if_uuid), &BTFN_UUID, sizeof(p_uuid_t));
p_cont_elem->transfer_syntaxes[0].if_version = BTFN_SYNTAX_IF_VERSION;
offset = 116;
bind_pdu->auth_verifier.auth_pad_length = rpc_offset_align(&offset, 4);
bind_pdu->auth_verifier.auth_type = RPC_C_AUTHN_WINNT;
bind_pdu->auth_verifier.auth_level = RPC_C_AUTHN_LEVEL_PKT_INTEGRITY;
bind_pdu->auth_verifier.auth_reserved = 0x00;
bind_pdu->auth_verifier.auth_context_id = 0x00000000;
offset += (8 + bind_pdu->auth_length);
bind_pdu->frag_length = offset;
buffer = (BYTE*) malloc(bind_pdu->frag_length);
if (!buffer)
return -1;
CopyMemory(buffer, bind_pdu, 24);
CopyMemory(&buffer[24], &bind_pdu->p_context_elem, 4);
CopyMemory(&buffer[28], &bind_pdu->p_context_elem.p_cont_elem[0], 24);
CopyMemory(&buffer[52], bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes, 20);
CopyMemory(&buffer[72], &bind_pdu->p_context_elem.p_cont_elem[1], 24);
CopyMemory(&buffer[96], bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes, 20);
offset = 116;
rpc_offset_pad(&offset, bind_pdu->auth_verifier.auth_pad_length);
CopyMemory(&buffer[offset], &bind_pdu->auth_verifier.auth_type, 8);
CopyMemory(&buffer[offset + 8], bind_pdu->auth_verifier.auth_value, bind_pdu->auth_length);
offset += (8 + bind_pdu->auth_length);
length = bind_pdu->frag_length;
clientCall = rpc_client_call_new(bind_pdu->call_id, 0);
if (!clientCall)
{
free(buffer);
return -1;
}
if (ArrayList_Add(rpc->client->ClientCallList, clientCall) < 0)
{
free(buffer);
return -1;
}
status = rpc_in_channel_send_pdu(inChannel, buffer, length);
free(bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes);
free(bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes);
free(bind_pdu->p_context_elem.p_cont_elem);
free(bind_pdu);
free(buffer);
return (status > 0) ? 1 : -1;
}
void rpc_ncacn_http_ntlm_uninit(rdpRpc* rpc, RpcChannel* channel)
{
ntlm_client_uninit(channel->ntlm);
ntlm_free(channel->ntlm);
channel->ntlm = NULL;
}
BOOL rpc_ntlm_http_in_connect(rdpRpc* rpc)
{
STREAM* s;
rdpSettings* settings;
int ntlm_token_length;
BYTE* ntlm_token_data;
HttpResponse* http_response;
rdpNtlm* ntlm = rpc->ntlm_http_in->ntlm;
settings = rpc->settings;
if (settings->tsg_same_credentials)
{
ntlm_client_init(ntlm, TRUE, settings->username,
settings->domain, settings->password);
ntlm_client_make_spn(ntlm, _T("HTTP"), settings->tsg_hostname);
}
else
{
ntlm_client_init(ntlm, TRUE, settings->tsg_username,
settings->tsg_domain, settings->tsg_password);
ntlm_client_make_spn(ntlm, _T("HTTP"), settings->tsg_hostname);
}
ntlm_authenticate(ntlm);
s = rpc_ntlm_http_request(rpc, &ntlm->outputBuffer, 0, TSG_CHANNEL_IN);
/* Send IN Channel Request */
DEBUG_RPC("\n%s", s->data);
tls_write_all(rpc->tls_in, s->data, s->size);
stream_free(s);
/* Receive IN Channel Response */
http_response = http_response_recv(rpc->tls_in);
ntlm_token_data = NULL;
crypto_base64_decode((BYTE*) http_response->AuthParam, strlen(http_response->AuthParam),
&ntlm_token_data, &ntlm_token_length);
ntlm->inputBuffer.pvBuffer = ntlm_token_data;
ntlm->inputBuffer.cbBuffer = ntlm_token_length;
ntlm_authenticate(ntlm);
http_response_free(http_response);
s = rpc_ntlm_http_request(rpc, &ntlm->outputBuffer, 0x40000000, TSG_CHANNEL_IN);
/* Send IN Channel Request */
DEBUG_RPC("\n%s", s->data);
tls_write_all(rpc->tls_in, s->data, s->size);
stream_free(s);
ntlm_client_uninit(ntlm);
ntlm_free(ntlm);
return TRUE;
}
