1321 lines
39 KiB
C
1321 lines
39 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Client
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* RPC over HTTP
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*
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* Copyright 2012 Fujitsu Technology Solutions GmbH
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* Copyright 2012 Dmitrij Jasnov <dmitrij.jasnov@ts.fujitsu.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/rand.h>
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#include "http.h"
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#include "rpc.h"
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#define HTTP_STREAM_SIZE 0xFFFF
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boolean rpc_attach(rdpRpc* rpc, rdpTcp* tcp_in, rdpTcp* tcp_out, rdpTls* tls_in, rdpTls* tls_out)
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{
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rpc->tcp_in = tcp_in;
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rpc->tcp_out = tcp_out;
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rpc->tls_in = tls_in;
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rpc->tls_out = tls_out;
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return true;
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}
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#define NTLM_PACKAGE_NAME _T("NTLM")
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boolean ntlm_client_init(rdpNtlm* ntlm, char* user, char* domain, char* password)
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{
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size_t size;
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SECURITY_STATUS status;
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sspi_GlobalInit();
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ntlm->table = InitSecurityInterface();
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ntlm->identity.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
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ntlm->identity.User = (uint16*) freerdp_uniconv_out(ntlm->uniconv, user, &size);
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ntlm->identity.UserLength = (uint32) size;
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if (domain)
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{
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ntlm->identity.Domain = (uint16*) freerdp_uniconv_out(ntlm->uniconv, domain, &size);
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ntlm->identity.DomainLength = (uint32) size;
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}
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else
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{
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ntlm->identity.Domain = (uint16*) NULL;
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ntlm->identity.DomainLength = 0;
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}
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ntlm->identity.Password = (uint16*) freerdp_uniconv_out(ntlm->uniconv, (char*) password, &size);
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ntlm->identity.PasswordLength = (uint32) size;
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status = QuerySecurityPackageInfo(NTLM_PACKAGE_NAME, &ntlm->pPackageInfo);
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if (status != SEC_E_OK)
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{
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printf("QuerySecurityPackageInfo status: 0x%08X\n", status);
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return false;
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}
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ntlm->cbMaxToken = ntlm->pPackageInfo->cbMaxToken;
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status = ntlm->table->AcquireCredentialsHandle(NULL, NTLM_PACKAGE_NAME,
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SECPKG_CRED_OUTBOUND, NULL, &ntlm->identity, NULL, NULL, &ntlm->credentials, &ntlm->expiration);
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if (status != SEC_E_OK)
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{
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printf("AcquireCredentialsHandle status: 0x%08X\n", status);
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return false;
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}
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ntlm->haveContext = false;
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ntlm->haveInputBuffer = false;
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memset(&ntlm->inputBuffer, 0, sizeof(SecBuffer));
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memset(&ntlm->outputBuffer, 0, sizeof(SecBuffer));
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memset(&ntlm->ContextSizes, 0, sizeof(SecPkgContext_Sizes));
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ntlm->fContextReq = ISC_REQ_REPLAY_DETECT | ISC_REQ_SEQUENCE_DETECT |
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ISC_REQ_CONFIDENTIALITY | ISC_REQ_DELEGATE;
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return true;
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}
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boolean ntlm_authenticate(rdpNtlm* ntlm)
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{
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SECURITY_STATUS status;
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ntlm->outputBufferDesc.ulVersion = SECBUFFER_VERSION;
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ntlm->outputBufferDesc.cBuffers = 1;
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ntlm->outputBufferDesc.pBuffers = &ntlm->outputBuffer;
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ntlm->outputBuffer.BufferType = SECBUFFER_TOKEN;
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ntlm->outputBuffer.cbBuffer = ntlm->cbMaxToken;
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ntlm->outputBuffer.pvBuffer = xmalloc(ntlm->outputBuffer.cbBuffer);
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status = ntlm->table->InitializeSecurityContext(&ntlm->credentials,
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(ntlm->haveContext) ? &ntlm->context : NULL,
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NULL, ntlm->fContextReq, 0, SECURITY_NATIVE_DREP,
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(ntlm->haveInputBuffer) ? &ntlm->inputBufferDesc : NULL,
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0, &ntlm->context, &ntlm->outputBufferDesc,
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&ntlm->pfContextAttr, &ntlm->expiration);
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if ((status == SEC_I_COMPLETE_AND_CONTINUE) || (status == SEC_I_COMPLETE_NEEDED) || (status == SEC_E_OK))
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{
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if (ntlm->table->CompleteAuthToken != NULL)
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ntlm->table->CompleteAuthToken(&ntlm->context, &ntlm->outputBufferDesc);
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if (ntlm->table->QueryContextAttributes(&ntlm->context, SECPKG_ATTR_SIZES, &ntlm->ContextSizes) != SEC_E_OK)
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{
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printf("QueryContextAttributes SECPKG_ATTR_SIZES failure\n");
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return 0;
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}
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if (status == SEC_I_COMPLETE_NEEDED)
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status = SEC_E_OK;
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else if (status == SEC_I_COMPLETE_AND_CONTINUE)
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status = SEC_I_CONTINUE_NEEDED;
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}
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ntlm->haveInputBuffer = true;
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ntlm->haveContext = true;
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return true;
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}
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void ntlm_client_uninit(rdpNtlm* ntlm)
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{
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FreeCredentialsHandle(&ntlm->credentials);
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FreeContextBuffer(ntlm->pPackageInfo);
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}
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rdpNtlm* ntlm_new()
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{
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rdpNtlm* ntlm = xnew(rdpNtlm);
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if (ntlm != NULL)
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{
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ntlm->uniconv = freerdp_uniconv_new();
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}
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return ntlm;
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}
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void ntlm_free(rdpNtlm* ntlm)
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{
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if (ntlm != NULL)
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{
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freerdp_uniconv_free(ntlm->uniconv);
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}
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}
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STREAM* rpc_ntlm_http_data(rdpRpc* rpc, char* command, SecBuffer* ntlm_token, uint8* content, int length)
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{
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STREAM* s;
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char* base64_ntlm_token;
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HttpContext* http_context;
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HttpRequest* http_request;
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base64_ntlm_token = crypto_encode_base64(ntlm_token->pvBuffer, ntlm_token->cbBuffer);
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if (strcmp(command, "RPC_IN_DATA") == 0)
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http_context = rpc->http_in->context;
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else
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http_context = rpc->http_out->context;
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http_request = http_request_new();
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http_request->ContentLength = length;
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http_request_set_method(http_request, http_context->Method);
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http_request_set_uri(http_request, http_context->URI);
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http_request_set_auth_scheme(http_request, "NTLM");
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http_request_set_auth_param(http_request, base64_ntlm_token);
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s = http_request_write(http_context, http_request);
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return s;
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}
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boolean rpc_out_connect_http(rdpRpc* rpc)
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{
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STREAM* http_stream;
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STREAM* ntlm_stream;
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HttpResponse* http_response;
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int decoded_ntlm_http_length;
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int encoded_ntlm_http_length;
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uint8* decoded_ntlm_http_data = NULL;
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uint8* encoded_ntlm_http_data = NULL;
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rdpTls* tls_out = rpc->tls_out;
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rdpSettings* settings = rpc->settings;
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rdpRpcHTTP* http_out = rpc->http_out;
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rdpNtlm* http_out_ntlm = http_out->ntlm;
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ntlm_stream = stream_new(0);
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printf("rpc_out_connect_http\n");
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ntlm_client_init(http_out_ntlm, settings->username, settings->password, settings->domain);
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ntlm_authenticate(http_out_ntlm);
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http_stream = rpc_ntlm_http_data(rpc, "RPC_OUT_DATA", &http_out_ntlm->outputBuffer, NULL, 0);
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DEBUG_RPC("\nSend:\n%s\n", http_stream->data);
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tls_write(tls_out, http_stream->data, http_stream->size);
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http_stream = stream_new(0xFFFF);
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stream_clear(http_stream);
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http_stream->p = http_stream->data;
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encoded_ntlm_http_length = -1;
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xfree(encoded_ntlm_http_data);
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encoded_ntlm_http_data = NULL;
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http_out->contentLength = 0;
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http_response = http_response_recv(tls_out);
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DEBUG_RPC("\nRecv:\n%s\n", http_stream->data);
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stream_clear(http_stream);
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http_stream->p = http_stream->data;
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encoded_ntlm_http_data = (uint8*) http_response->AuthParam;
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encoded_ntlm_http_length = strlen((char*) encoded_ntlm_http_data);
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if (encoded_ntlm_http_length == 0) /* No NTLM data was found */
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return false;
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crypto_base64_decode(encoded_ntlm_http_data, encoded_ntlm_http_length, &decoded_ntlm_http_data, &decoded_ntlm_http_length);
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http_out_ntlm->inputBuffer.pvBuffer = decoded_ntlm_http_data;
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http_out_ntlm->inputBuffer.cbBuffer = decoded_ntlm_http_length;
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ntlm_authenticate(http_out_ntlm);
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http_out->contentLength = 76;
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http_out->remContentLength = 76;
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http_stream = rpc_ntlm_http_data(rpc, "RPC_OUT_DATA", &http_out_ntlm->outputBuffer, NULL, http_out->contentLength);
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DEBUG_RPC("\nSend:\n%s\n", http_stream->data);
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tls_write(tls_out, http_stream->data, http_stream->size);
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stream_clear(http_stream);
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xfree(decoded_ntlm_http_data);
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xfree(encoded_ntlm_http_data);
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/* At this point OUT connection is ready to send CONN/A1 and start with receiving data */
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http_out->state = RPC_HTTP_SENDING;
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return true;
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}
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boolean rpc_in_connect_http(rdpRpc* rpc)
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{
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STREAM* ntlm_stream;
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STREAM* http_stream;
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HttpResponse* http_response;
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int decoded_ntlm_http_length;
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int encoded_ntlm_http_length;
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uint8* decoded_ntlm_http_data = NULL;
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uint8* encoded_ntlm_http_data = NULL;
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rdpTls* tls_in = rpc->tls_in;
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rdpSettings* settings = rpc->settings;
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rdpRpcHTTP* http_in = rpc->http_in;
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rdpNtlm* http_in_ntlm = http_in->ntlm;
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ntlm_stream = stream_new(0);
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printf("rpc_in_connect_http\n");
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ntlm_client_init(http_in_ntlm, settings->username, settings->password, settings->domain);
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ntlm_authenticate(http_in_ntlm);
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http_stream = rpc_ntlm_http_data(rpc, "RPC_IN_DATA", &http_in_ntlm->outputBuffer, NULL, 0);
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DEBUG_RPC("Send:\n%s\n", http_stream->data);
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tls_write(tls_in, http_stream->data, http_stream->size);
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http_stream = stream_new(0xFFFF);
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stream_clear(http_stream);
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http_stream->p = http_stream->data;
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xfree(decoded_ntlm_http_data);
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encoded_ntlm_http_length = -1;
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xfree(encoded_ntlm_http_data);
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encoded_ntlm_http_data = NULL;
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http_in->contentLength = 0;
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http_response = http_response_recv(tls_in);
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DEBUG_RPC("Recv:\n%s\n", http_stream->data);
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stream_clear(http_stream);
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http_stream->p = http_stream->data;
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encoded_ntlm_http_data = (uint8*) http_response->AuthParam;
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encoded_ntlm_http_length = strlen((char*) encoded_ntlm_http_data);
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if (encoded_ntlm_http_length == 0) /* No NTLM data was found */
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return false;
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crypto_base64_decode(encoded_ntlm_http_data, encoded_ntlm_http_length, &decoded_ntlm_http_data, &decoded_ntlm_http_length);
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http_in_ntlm->inputBuffer.pvBuffer = decoded_ntlm_http_data;
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http_in_ntlm->inputBuffer.cbBuffer = decoded_ntlm_http_length;
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ntlm_authenticate(http_in_ntlm);
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http_in->contentLength = 1073741824;
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http_in->remContentLength = 1073741824;
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http_stream = rpc_ntlm_http_data(rpc, "RPC_IN_DATA", &http_in_ntlm->outputBuffer, NULL, http_in->contentLength);
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DEBUG_RPC("Send:\n%s\n", http_stream->data);
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tls_write(tls_in, http_stream->data, http_stream->size);
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stream_clear(http_stream);
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http_stream->p = http_stream->data;
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xfree(decoded_ntlm_http_data);
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xfree(encoded_ntlm_http_data);
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/* At this point IN connection is ready to send CONN/B1 and start with sending data */
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http_in->state = RPC_HTTP_SENDING;
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return true;
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}
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int rpc_out_write(rdpRpc* rpc, uint8* data, int length)
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{
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int sent = 0;
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int status = -1;
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rdpRpcHTTP* http_out = rpc->http_out;
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rdpTls* tls_out = rpc->tls_out;
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if (http_out->state == RPC_HTTP_DISCONNECTED)
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{
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if (!rpc_out_connect_http(rpc))
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return false;
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}
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if (http_out->remContentLength < length)
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{
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printf("RPC Error: HTTP frame is over.\n");
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return -1; /* TODO ChannelRecycling */
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}
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#ifdef WITH_DEBUG_RPC
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printf("rpc_out_write(): length: %d\n", length);
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freerdp_hexdump(data, length);
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printf("\n");
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#endif
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while (sent < length)
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{
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status = tls_write(tls_out, data + sent, length - sent);
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if (status <= 0)
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return status; /* TODO no idea how to handle errors */
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sent += status;
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}
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http_out->remContentLength -= sent;
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return sent;
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}
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int rpc_in_write(rdpRpc* rpc, uint8* data, int length)
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{
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int sent = 0;
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int status = -1;
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rdpRpcHTTP* http_in = rpc->http_in;
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rdpTls* tls_in = rpc->tls_in;
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if (http_in->state == RPC_HTTP_DISCONNECTED)
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{
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if (!rpc_in_connect_http(rpc))
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return -1;
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}
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if (http_in->remContentLength < length)
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{
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printf("RPC Error: HTTP frame is over.\n");
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return -1;/* TODO ChannelRecycling */
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}
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#ifdef WITH_DEBUG_RPC
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printf("rpc_in_write() length: %d, remaining content length: %d\n", length, http_in->remContentLength);
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freerdp_hexdump(data, length);
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printf("\n");
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#endif
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while (sent < length)
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{
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status = tls_write(tls_in, data + sent, length - sent);
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if (status <= 0)
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return status; /* TODO no idea how to handle errors */
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sent += status;
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}
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rpc->BytesSent += sent;
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http_in->remContentLength -= sent;
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return sent;
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}
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uint8* rpc_create_cookie()
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{
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uint8* ret = xmalloc(16);
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RAND_pseudo_bytes(ret, 16);
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return ret;
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}
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boolean rpc_out_send_CONN_A1(rdpRpc* rpc)
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{
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STREAM* pdu = stream_new(76);
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DEBUG_RPC("Sending CONN_A1");
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uint8 rpc_vers = 0x05;
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uint8 rpc_vers_minor = 0x00;
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uint8 ptype = PTYPE_RTS;
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uint8 pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
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uint32 packet_drep = 0x00000010;
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uint16 frag_length = 76;
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uint16 auth_length = 0;
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uint32 call_id = 0x00000000;
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uint16 flags = 0x0000;
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uint16 num_commands = 0x0004;
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uint32 vCommandType = 0x00000006;
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uint32 Version = 0x00000001;
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uint32 vccCommandType = 0x00000003;
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uint32 occCommandType = 0x00000003;
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uint32 rwsCommandType = 0x00000000;
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uint32 receiveWindowSize = 0x00010000;
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rpc->virtualConnectionCookie = rpc_create_cookie(); /* 16 bytes */
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rpc->OUTChannelCookie = rpc_create_cookie(); /* 16 bytes */
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rpc->AwailableWindow = receiveWindowSize;
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stream_write_uint8(pdu, rpc_vers);
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stream_write_uint8(pdu, rpc_vers_minor);
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stream_write_uint8(pdu, ptype);
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stream_write_uint8(pdu, pfc_flags);
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stream_write_uint32(pdu, packet_drep);
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stream_write_uint16(pdu, frag_length);
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stream_write_uint16(pdu, auth_length);
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stream_write_uint32(pdu, call_id);
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stream_write_uint16(pdu, flags);
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stream_write_uint16(pdu, num_commands);
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stream_write_uint32(pdu, vCommandType);
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stream_write_uint32(pdu, Version);
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stream_write_uint32(pdu, vccCommandType);
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stream_write(pdu, rpc->virtualConnectionCookie, 16);
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stream_write_uint32(pdu, occCommandType);
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stream_write(pdu, rpc->OUTChannelCookie, 16);
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stream_write_uint32(pdu, rwsCommandType);
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stream_write_uint32(pdu, receiveWindowSize);
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rpc_out_write(rpc, pdu->data, stream_get_length(pdu));
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stream_free(pdu);
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return true;
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}
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boolean rpc_in_send_CONN_B1(rdpRpc* rpc)
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{
|
|
STREAM* s = stream_new(104);
|
|
|
|
DEBUG_RPC("Sending CONN_B1");
|
|
|
|
uint8 rpc_vers = 0x05;
|
|
uint8 rpc_vers_minor = 0x00;
|
|
uint8 ptype = PTYPE_RTS;
|
|
uint8 pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
|
|
uint32 packet_drep = 0x00000010;
|
|
uint16 frag_length = 104;
|
|
uint16 auth_length = 0;
|
|
uint32 call_id = 0x00000000;
|
|
uint16 flags = 0x0000;
|
|
uint16 num_commands = 0x0006;
|
|
uint32 vCommandType = 0x00000006;
|
|
uint32 Version = 0x00000001;
|
|
uint32 vccCommandType = 0x00000003;
|
|
uint32 iccCommandType = 0x00000003;
|
|
uint32 clCommandType = 0x00000004;
|
|
uint32 ChannelLifetime = 0x40000000;
|
|
uint32 ckCommandType = 0x00000005;
|
|
uint32 ClientKeepalive = 0x000493e0;
|
|
uint32 agidCommandType = 0x0000000c;
|
|
uint8* AssociationGroupId;
|
|
|
|
rpc->INChannelCookie = rpc_create_cookie(); /* 16 bytes */
|
|
AssociationGroupId = rpc_create_cookie(); /* 16 bytes */
|
|
|
|
stream_write_uint8(s, rpc_vers);
|
|
stream_write_uint8(s, rpc_vers_minor);
|
|
stream_write_uint8(s, ptype);
|
|
stream_write_uint8(s, pfc_flags);
|
|
stream_write_uint32(s, packet_drep);
|
|
stream_write_uint16(s, frag_length);
|
|
stream_write_uint16(s, auth_length);
|
|
stream_write_uint32(s, call_id);
|
|
stream_write_uint16(s, flags);
|
|
stream_write_uint16(s, num_commands);
|
|
stream_write_uint32(s, vCommandType);
|
|
stream_write_uint32(s, Version);
|
|
stream_write_uint32(s, vccCommandType);
|
|
stream_write(s, rpc->virtualConnectionCookie, 16);
|
|
stream_write_uint32(s, iccCommandType);
|
|
stream_write(s, rpc->INChannelCookie, 16);
|
|
stream_write_uint32(s, clCommandType);
|
|
stream_write_uint32(s, ChannelLifetime);
|
|
stream_write_uint32(s, ckCommandType);
|
|
stream_write_uint32(s, ClientKeepalive);
|
|
stream_write_uint32(s, agidCommandType);
|
|
stream_write(s, AssociationGroupId, 16);
|
|
stream_seal(s);
|
|
|
|
rpc_in_write(rpc, s->data, s->size);
|
|
|
|
stream_free(s);
|
|
|
|
return true;
|
|
}
|
|
|
|
boolean rpc_in_send_keep_alive(rdpRpc* rpc)
|
|
{
|
|
STREAM* s = stream_new(28);
|
|
|
|
uint8 rpc_vers = 0x05;
|
|
uint8 rpc_vers_minor = 0x00;
|
|
uint8 ptype = PTYPE_RTS;
|
|
uint8 pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
|
|
uint32 packet_drep = 0x00000010;
|
|
uint16 frag_length = 28;
|
|
uint16 auth_length = 0;
|
|
uint32 call_id = 0x00000000;
|
|
uint16 flags = 0x0002;
|
|
uint16 num_commands = 0x0001;
|
|
uint32 ckCommandType = 0x00000005;
|
|
uint32 ClientKeepalive = 0x00007530;
|
|
|
|
stream_write_uint8(s, rpc_vers);
|
|
stream_write_uint8(s, rpc_vers_minor);
|
|
stream_write_uint8(s, ptype);
|
|
stream_write_uint8(s, pfc_flags);
|
|
stream_write_uint32(s, packet_drep);
|
|
stream_write_uint16(s, frag_length);
|
|
stream_write_uint16(s, auth_length);
|
|
stream_write_uint32(s, call_id);
|
|
stream_write_uint16(s, flags);
|
|
stream_write_uint16(s, num_commands);
|
|
stream_write_uint32(s, ckCommandType);
|
|
stream_write_uint32(s, ClientKeepalive);
|
|
|
|
rpc_in_write(rpc, s->data, stream_get_length(s));
|
|
|
|
stream_free(s);
|
|
|
|
return true;
|
|
}
|
|
|
|
boolean rpc_in_send_bind(rdpRpc* rpc)
|
|
{
|
|
STREAM* pdu;
|
|
rpcconn_bind_hdr_t* bind_pdu;
|
|
rdpSettings* settings = rpc->settings;
|
|
STREAM* ntlm_stream = stream_new(0xFFFF);
|
|
|
|
/* TODO: Set NTLMv2 + DO_NOT_SEAL, DomainName = GatewayName? */
|
|
|
|
rpc->ntlm = ntlm_new();
|
|
|
|
DEBUG_RPC("TODO: complete NTLM integration");
|
|
|
|
ntlm_client_init(rpc->ntlm, settings->username, settings->password, settings->domain);
|
|
|
|
ntlm_authenticate(rpc->ntlm);
|
|
ntlm_stream->size = rpc->ntlm->outputBuffer.cbBuffer;
|
|
ntlm_stream->p = ntlm_stream->data = rpc->ntlm->outputBuffer.pvBuffer;
|
|
|
|
bind_pdu = xnew(rpcconn_bind_hdr_t);
|
|
bind_pdu->rpc_vers = 5;
|
|
bind_pdu->rpc_vers_minor = 0;
|
|
bind_pdu->PTYPE = PTYPE_BIND;
|
|
bind_pdu->pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG | PFC_PENDING_CANCEL | PFC_CONC_MPX;
|
|
bind_pdu->packed_drep[0] = 0x10;
|
|
bind_pdu->packed_drep[1] = 0x00;
|
|
bind_pdu->packed_drep[2] = 0x00;
|
|
bind_pdu->packed_drep[3] = 0x00;
|
|
bind_pdu->frag_length = 124 + ntlm_stream->size;
|
|
bind_pdu->auth_length = ntlm_stream->size;
|
|
bind_pdu->call_id = 2;
|
|
bind_pdu->max_xmit_frag = 0x0FF8;
|
|
bind_pdu->max_recv_frag = 0x0FF8;
|
|
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 = xmalloc(sizeof(p_cont_elem_t) * bind_pdu->p_context_elem.n_context_elem);
|
|
bind_pdu->p_context_elem.p_cont_elem[0].p_cont_id = 0;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].n_transfer_syn = 1;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].reserved = 0;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_low = 0x44e265dd;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_mid = 0x7daf;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.time_hi_and_version = 0x42cd;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.clock_seq_hi_and_reserved = 0x85;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.clock_seq_low = 0x60;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[0] = 0x3c;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[1] = 0xdb;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[2] = 0x6e;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[3] = 0x7a;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[4] = 0x27;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_uuid.node[5] = 0x29;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].abstract_syntax.if_version = 0x00030001;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes = xmalloc(sizeof(p_syntax_id_t));
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_low = 0x8a885d04;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_mid = 0x1ceb;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.time_hi_and_version = 0x11c9;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.clock_seq_hi_and_reserved = 0x9f;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.clock_seq_low = 0xe8;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[0] = 0x08;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[1] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[2] = 0x2b;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[3] = 0x10;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[4] = 0x48;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_uuid.node[5] = 0x60;
|
|
bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes[0].if_version = 0x00000002;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].p_cont_id = 1;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].n_transfer_syn = 1;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].reserved = 0;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_low = 0x44e265dd;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_mid = 0x7daf;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.time_hi_and_version = 0x42cd;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.clock_seq_hi_and_reserved = 0x85;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.clock_seq_low = 0x60;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[0] = 0x3c;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[1] = 0xdb;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[2] = 0x6e;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[3] = 0x7a;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[4] = 0x27;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_uuid.node[5] = 0x29;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].abstract_syntax.if_version = 0x00030001;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes = xmalloc(sizeof(p_syntax_id_t));
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_low = 0x6cb71c2c;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_mid = 0x9812;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.time_hi_and_version = 0x4540;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.clock_seq_hi_and_reserved = 0x03;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.clock_seq_low = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[0] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[1] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[2] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[3] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[4] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_uuid.node[5] = 0x00;
|
|
bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes[0].if_version = 0x00000001;
|
|
bind_pdu->auth_verifier.auth_pad = NULL; /* align(4); size_is(auth_pad_length) p*/
|
|
bind_pdu->auth_verifier.auth_type = 0x0a; /* :01 which authent service */
|
|
bind_pdu->auth_verifier.auth_level = 0x05; /* :01 which level within service */
|
|
bind_pdu->auth_verifier.auth_pad_length = 0x00; /* :01 */
|
|
bind_pdu->auth_verifier.auth_reserved = 0x00; /* :01 reserved, m.b.z. */
|
|
bind_pdu->auth_verifier.auth_context_id = 0x00000000; /* :04 */
|
|
bind_pdu->auth_verifier.auth_value = xmalloc(bind_pdu->auth_length); /* credentials; size_is(auth_length) p*/;
|
|
memcpy(bind_pdu->auth_verifier.auth_value, ntlm_stream->data, bind_pdu->auth_length);
|
|
|
|
stream_free(ntlm_stream);
|
|
|
|
pdu = stream_new(bind_pdu->frag_length);
|
|
|
|
stream_write(pdu, bind_pdu, 24);
|
|
stream_write(pdu, &bind_pdu->p_context_elem, 4);
|
|
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem, 24);
|
|
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem[0].transfer_syntaxes, 20);
|
|
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem + 1, 24);
|
|
stream_write(pdu, bind_pdu->p_context_elem.p_cont_elem[1].transfer_syntaxes, 20);
|
|
|
|
if (bind_pdu->auth_verifier.auth_pad_length > 0)
|
|
stream_write(pdu, bind_pdu->auth_verifier.auth_pad, bind_pdu->auth_verifier.auth_pad_length);
|
|
|
|
stream_write(pdu, &bind_pdu->auth_verifier.auth_type, 8); /* assumed that uint8 pointer is 32bit long (4 bytes) */
|
|
stream_write(pdu, bind_pdu->auth_verifier.auth_value, bind_pdu->auth_length);
|
|
|
|
rpc_in_write(rpc, pdu->data, stream_get_length(pdu));
|
|
|
|
/* TODO there is some allocated memory */
|
|
xfree(bind_pdu);
|
|
|
|
return true;
|
|
}
|
|
|
|
boolean rpc_in_send_rpc_auth_3(rdpRpc* rpc)
|
|
{
|
|
rpcconn_rpc_auth_3_hdr_t* rpc_auth_3_pdu;
|
|
STREAM* ntlm_stream = stream_new(0xFFFF);
|
|
|
|
ntlm_authenticate(rpc->ntlm);
|
|
ntlm_stream->size = rpc->ntlm->outputBuffer.cbBuffer;
|
|
ntlm_stream->p = ntlm_stream->data = rpc->ntlm->outputBuffer.pvBuffer;
|
|
|
|
rpc_auth_3_pdu = xnew(rpcconn_rpc_auth_3_hdr_t);
|
|
rpc_auth_3_pdu->rpc_vers = 5;
|
|
rpc_auth_3_pdu->rpc_vers_minor = 0;
|
|
rpc_auth_3_pdu->PTYPE = PTYPE_RPC_AUTH_3;
|
|
rpc_auth_3_pdu->pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG | PFC_CONC_MPX;
|
|
rpc_auth_3_pdu->packed_drep[0] = 0x10;
|
|
rpc_auth_3_pdu->packed_drep[1] = 0x00;
|
|
rpc_auth_3_pdu->packed_drep[2] = 0x00;
|
|
rpc_auth_3_pdu->packed_drep[3] = 0x00;
|
|
rpc_auth_3_pdu->frag_length = 28 + ntlm_stream->size;
|
|
rpc_auth_3_pdu->auth_length = ntlm_stream->size;
|
|
rpc_auth_3_pdu->call_id = 2;
|
|
rpc_auth_3_pdu->max_xmit_frag = 0x0FF8;
|
|
rpc_auth_3_pdu->max_recv_frag = 0x0FF8;
|
|
rpc_auth_3_pdu->auth_verifier.auth_pad = NULL; /* align(4); size_is(auth_pad_length) p */
|
|
rpc_auth_3_pdu->auth_verifier.auth_type = 0x0a; /* :01 which authent service */
|
|
rpc_auth_3_pdu->auth_verifier.auth_level = 0x05; /* :01 which level within service */
|
|
rpc_auth_3_pdu->auth_verifier.auth_pad_length = 0x00; /* :01 */
|
|
rpc_auth_3_pdu->auth_verifier.auth_reserved = 0x00; /* :01 reserved, m.b.z. */
|
|
rpc_auth_3_pdu->auth_verifier.auth_context_id = 0x00000000; /* :04 */
|
|
rpc_auth_3_pdu->auth_verifier.auth_value = xmalloc(rpc_auth_3_pdu->auth_length); /* credentials; size_is(auth_length) p */
|
|
memcpy(rpc_auth_3_pdu->auth_verifier.auth_value, ntlm_stream->data, rpc_auth_3_pdu->auth_length);
|
|
|
|
stream_free(ntlm_stream);
|
|
|
|
STREAM* pdu = stream_new(rpc_auth_3_pdu->frag_length);
|
|
|
|
stream_write(pdu, rpc_auth_3_pdu, 20);
|
|
|
|
if (rpc_auth_3_pdu->auth_verifier.auth_pad_length > 0)
|
|
stream_write(pdu, rpc_auth_3_pdu->auth_verifier.auth_pad, rpc_auth_3_pdu->auth_verifier.auth_pad_length);
|
|
|
|
stream_write(pdu, &rpc_auth_3_pdu->auth_verifier.auth_type, 8);
|
|
stream_write(pdu, rpc_auth_3_pdu->auth_verifier.auth_value, rpc_auth_3_pdu->auth_length);
|
|
|
|
rpc_in_write(rpc, pdu->data, stream_get_length(pdu));
|
|
|
|
xfree(rpc_auth_3_pdu);
|
|
|
|
return true;
|
|
}
|
|
|
|
boolean rpc_in_send_flow_control(rdpRpc* rpc)
|
|
{
|
|
STREAM* s = stream_new(56);
|
|
|
|
uint8* b;
|
|
uint8 rpc_vers = 0x05;
|
|
uint8 rpc_vers_minor = 0x00;
|
|
uint8 ptype = PTYPE_RTS;
|
|
uint8 pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
|
|
uint32 packet_drep = 0x00000010;
|
|
uint16 frag_length = 56;
|
|
uint16 auth_length = 0;
|
|
uint32 call_id = 0x00000000;
|
|
uint16 flags = 0x0002;
|
|
uint16 num_commands = 0x0002;
|
|
uint32 ckCommandType = 0x0000000d;
|
|
uint32 ClientKeepalive = 0x00000003;
|
|
uint32 a = 0x00000001;
|
|
uint32 aa = rpc->BytesReceived;
|
|
uint32 aaa = 0x00010000;
|
|
|
|
rpc->AwailableWindow = aaa;
|
|
b = rpc->OUTChannelCookie;
|
|
|
|
stream_write_uint8(s, rpc_vers);
|
|
stream_write_uint8(s, rpc_vers_minor);
|
|
stream_write_uint8(s, ptype);
|
|
stream_write_uint8(s, pfc_flags);
|
|
stream_write_uint32(s, packet_drep);
|
|
stream_write_uint16(s, frag_length);
|
|
stream_write_uint16(s, auth_length);
|
|
stream_write_uint32(s, call_id);
|
|
stream_write_uint16(s, flags);
|
|
stream_write_uint16(s, num_commands);
|
|
stream_write_uint32(s, ckCommandType);
|
|
stream_write_uint32(s, ClientKeepalive);
|
|
stream_write_uint32(s, a);
|
|
stream_write_uint32(s, aa);
|
|
stream_write_uint32(s, aaa);
|
|
stream_write(s, b, 16);
|
|
|
|
rpc_in_write(rpc, s->data, stream_get_length(s));
|
|
|
|
stream_free(s);
|
|
|
|
return true;
|
|
}
|
|
|
|
boolean rpc_in_send_ping(rdpRpc* rpc)
|
|
{
|
|
STREAM* s = stream_new(20);
|
|
|
|
uint8 rpc_vers = 0x05;
|
|
uint8 rpc_vers_minor = 0x00;
|
|
uint8 ptype = PTYPE_RTS;
|
|
uint8 pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
|
|
uint32 packet_drep = 0x00000010;
|
|
uint16 frag_length = 56;
|
|
uint16 auth_length = 0;
|
|
uint32 call_id = 0x00000000;
|
|
uint16 flags = 0x0001;
|
|
uint16 num_commands = 0x0000;
|
|
|
|
stream_write_uint8(s, rpc_vers);
|
|
stream_write_uint8(s, rpc_vers_minor);
|
|
stream_write_uint8(s, ptype);
|
|
stream_write_uint8(s, pfc_flags);
|
|
stream_write_uint32(s, packet_drep);
|
|
stream_write_uint16(s, frag_length);
|
|
stream_write_uint16(s, auth_length);
|
|
stream_write_uint32(s, call_id);
|
|
stream_write_uint16(s, flags);
|
|
stream_write_uint16(s, num_commands);
|
|
|
|
rpc_in_write(rpc, s->data, stream_get_length(s));
|
|
|
|
stream_free(s);
|
|
|
|
return true;
|
|
}
|
|
|
|
int rpc_out_read_http_header(rdpRpc* rpc)
|
|
{
|
|
int status = 0;
|
|
HttpResponse* http_response;
|
|
rdpTls* tls_out = rpc->tls_out;
|
|
|
|
http_response = http_response_recv(tls_out);
|
|
|
|
return status;
|
|
}
|
|
|
|
int rpc_rts_recv(rdpRpc* rpc, uint8* pdu, int length)
|
|
{
|
|
int i;
|
|
uint32 CommandType;
|
|
uint16 flags = *(uint16*)(pdu + 16);
|
|
uint16 num_commands = *(uint16*)(pdu + 18);
|
|
uint8* iterator = pdu + 20;
|
|
|
|
if (flags & RTS_FLAG_PING)
|
|
{
|
|
rpc_in_send_keep_alive(rpc);
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < num_commands; i++)
|
|
{
|
|
CommandType = *(uint32*) iterator;
|
|
|
|
switch (CommandType)
|
|
{
|
|
case 0x00000000: /* ReceiveWindowSize */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x00000001: /* FlowControlAck */
|
|
iterator += 28;
|
|
break;
|
|
|
|
case 0x00000002: /* ConnectionTimeout */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x00000003: /* Cookie */
|
|
iterator += 20;
|
|
break;
|
|
|
|
case 0x00000004: /* ChannelLifetime */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x00000005: /* ClientKeepalive */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x00000006: /* Version */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x00000007: /* Empty */
|
|
iterator += 4;
|
|
break;
|
|
|
|
case 0x00000008: /* Padding */
|
|
iterator += 8 + *(uint32*) (iterator + 4);
|
|
break;
|
|
|
|
case 0x00000009: /* NegativeANCE */
|
|
iterator += 4;
|
|
break;
|
|
|
|
case 0x0000000a: /* ANCE */
|
|
iterator += 4;
|
|
break;
|
|
|
|
case 0x0000000b: /* ClientAddress */
|
|
iterator += 4 + 4 + (12 * (*(uint32*) (iterator + 4))) + 12;
|
|
break;
|
|
|
|
case 0x0000000c: /* AssociationGroupId */
|
|
iterator += 20;
|
|
break;
|
|
|
|
case 0x0000000d: /* Destination */
|
|
iterator += 8;
|
|
break;
|
|
|
|
case 0x0000000e: /* PingTrafficSentNotify */
|
|
iterator += 8;
|
|
break;
|
|
|
|
default:
|
|
printf(" Error: Unknown RTS CommandType: 0x%x\n", CommandType);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int rpc_out_read(rdpRpc* rpc, uint8* data, int length)
|
|
{
|
|
int status;
|
|
uint8* pdu;
|
|
uint8 ptype;
|
|
uint16 frag_length;
|
|
rdpTls* tls_out = rpc->tls_out;
|
|
rdpRpcHTTP* http_out = rpc->http_out;
|
|
|
|
if (rpc->AwailableWindow < 0x00008FFF) /* Just a simple workaround */
|
|
rpc_in_send_flow_control(rpc); /* Send FlowControlAck every time AW reaches the half */
|
|
|
|
if (http_out->remContentLength <= 0xFFFF) /* TODO make ChannelRecycling */
|
|
{
|
|
if (rpc_out_read_http_header(rpc) < 0)
|
|
return -1;
|
|
}
|
|
|
|
pdu = xmalloc(0xFFFF);
|
|
|
|
status = tls_read(tls_out, pdu, 10);
|
|
|
|
if (status <= 0) /* read first 10 bytes to get the frag_length value */
|
|
{
|
|
xfree(pdu);
|
|
return status;
|
|
}
|
|
|
|
ptype = *(pdu + 2);
|
|
frag_length = *((uint16*) (pdu + 8));
|
|
|
|
status = tls_read(tls_out, pdu + 10, frag_length - 10);
|
|
|
|
if (status < 0)
|
|
{
|
|
xfree(pdu);
|
|
return status;
|
|
}
|
|
|
|
if (ptype == 0x14) /* RTS PDU */
|
|
{
|
|
rpc_rts_recv(rpc, pdu, frag_length);
|
|
xfree(pdu);
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
rpc->BytesReceived += frag_length; /* RTS PDUs are not subjects for FlowControl */
|
|
rpc->AwailableWindow -= frag_length;
|
|
}
|
|
|
|
http_out->remContentLength -= frag_length;
|
|
|
|
if (length < frag_length)
|
|
{
|
|
printf("rpc_out_read(): Error! Given buffer is to small. Received data fits not in.\n");
|
|
xfree(pdu);
|
|
return -1; /* TODO add buffer for storing remaining data for the next read in case destination buffer is too small */
|
|
}
|
|
|
|
memcpy(data, pdu, frag_length);
|
|
|
|
#ifdef WITH_DEBUG_RPC
|
|
printf("rpc_out_recv(): length: %d, remaining content length: %d\n", frag_length, http_out->remContentLength);
|
|
freerdp_hexdump(data, frag_length);
|
|
printf("\n");
|
|
#endif
|
|
|
|
xfree(pdu);
|
|
|
|
return frag_length;
|
|
}
|
|
|
|
int rpc_out_recv_bind_ack(rdpRpc* rpc)
|
|
{
|
|
uint16 frag_length;
|
|
uint16 auth_length;
|
|
STREAM* ntlmssp_stream;
|
|
int pdu_length = 0x8FFF; /* 32KB buffer */
|
|
uint8* pdu = xmalloc(pdu_length);
|
|
int status = rpc_out_read(rpc, pdu, pdu_length);
|
|
|
|
DEBUG_RPC("TODO: complete NTLM integration");
|
|
|
|
if (status > 0)
|
|
{
|
|
frag_length = *((uint16*)(pdu + 8));
|
|
auth_length = *((uint16*)(pdu + 10));
|
|
|
|
ntlmssp_stream = stream_new(0xFFFF);
|
|
stream_write(ntlmssp_stream, (pdu + (frag_length - auth_length)), auth_length);
|
|
ntlmssp_stream->p = ntlmssp_stream->data;
|
|
|
|
//ntlmssp_recv(rpc->ntlmssp, ntlmssp_stream);
|
|
|
|
stream_free(ntlmssp_stream);
|
|
}
|
|
|
|
xfree(pdu);
|
|
return status;
|
|
}
|
|
|
|
int rpc_write(rdpRpc* rpc, uint8* data, int length, uint16 opnum)
|
|
{
|
|
int i;
|
|
int status = -1;
|
|
rpcconn_request_hdr_t* request_pdu;
|
|
|
|
uint8 auth_pad_length = 16 - ((24 + length + 8 + 16) % 16);
|
|
|
|
if (auth_pad_length == 16)
|
|
auth_pad_length = 0;
|
|
|
|
request_pdu = xnew(rpcconn_request_hdr_t);
|
|
request_pdu->rpc_vers = 5;
|
|
request_pdu->rpc_vers_minor = 0;
|
|
request_pdu->PTYPE = PTYPE_REQUEST;
|
|
request_pdu->pfc_flags = PFC_FIRST_FRAG | PFC_LAST_FRAG;
|
|
request_pdu->packed_drep[0] = 0x10;
|
|
request_pdu->packed_drep[1] = 0x00;
|
|
request_pdu->packed_drep[2] = 0x00;
|
|
request_pdu->packed_drep[3] = 0x00;
|
|
request_pdu->frag_length = 24 + length + auth_pad_length + 8 + 16;
|
|
request_pdu->auth_length = 16;
|
|
request_pdu->call_id = ++rpc->call_id;
|
|
|
|
/* opnum=8 means [MS-TSGU] TsProxySetupRecievePipe, save call_id for checking pipe responses */
|
|
|
|
if (opnum == 8)
|
|
rpc->pipe_call_id = rpc->call_id;
|
|
|
|
request_pdu->alloc_hint = length;
|
|
request_pdu->p_cont_id = 0x0000;
|
|
request_pdu->opnum = opnum;
|
|
request_pdu->stub_data = data;
|
|
request_pdu->auth_verifier.auth_type = 0x0a; /* :01 which authentication service */
|
|
request_pdu->auth_verifier.auth_level = 0x05; /* :01 which level within service */
|
|
request_pdu->auth_verifier.auth_pad_length = auth_pad_length; /* :01 */
|
|
request_pdu->auth_verifier.auth_pad = xmalloc(auth_pad_length); /* align(4); size_is(auth_pad_length) p */
|
|
|
|
for (i = 0; i < auth_pad_length; i++)
|
|
{
|
|
request_pdu->auth_verifier.auth_pad[i] = 0x00;
|
|
}
|
|
|
|
request_pdu->auth_verifier.auth_reserved = 0x00; /* :01 reserved, m.b.z. */
|
|
request_pdu->auth_verifier.auth_context_id = 0x00000000; /* :04 */
|
|
request_pdu->auth_verifier.auth_value = xmalloc(request_pdu->auth_length); /* credentials; size_is(auth_length) p */
|
|
|
|
STREAM* pdu = stream_new(request_pdu->frag_length);
|
|
|
|
stream_write(pdu, request_pdu, 24);
|
|
stream_write(pdu, request_pdu->stub_data, request_pdu->alloc_hint);
|
|
|
|
if (request_pdu->auth_verifier.auth_pad_length > 0)
|
|
stream_write(pdu, request_pdu->auth_verifier.auth_pad, request_pdu->auth_verifier.auth_pad_length);
|
|
|
|
stream_write(pdu, &request_pdu->auth_verifier.auth_type, 8);
|
|
|
|
rdpBlob rdpMsg;
|
|
rdpMsg.data = pdu->data;
|
|
rdpMsg.length = stream_get_length(pdu);
|
|
|
|
DEBUG_RPC("TODO: complete NTLM integration");
|
|
|
|
//ntlmssp_encrypt_message(rpc->ntlmssp, &rdpMsg, NULL, request_pdu->auth_verifier.auth_value);
|
|
|
|
stream_write(pdu, request_pdu->auth_verifier.auth_value, request_pdu->auth_length);
|
|
|
|
status = rpc_in_write(rpc, pdu->data, pdu->p - pdu->data);
|
|
|
|
xfree(request_pdu->auth_verifier.auth_value);
|
|
xfree(request_pdu->auth_verifier.auth_pad);
|
|
xfree(request_pdu);
|
|
|
|
if (status < 0)
|
|
{
|
|
printf("rpc_write(): Error! rcph_in_write returned negative value.\n");
|
|
return status;
|
|
}
|
|
|
|
return length;
|
|
}
|
|
|
|
int rpc_read(rdpRpc* rpc, uint8* data, int length)
|
|
{
|
|
int status;
|
|
int read = 0;
|
|
int data_length;
|
|
uint16 frag_length;
|
|
uint16 auth_length;
|
|
uint8 auth_pad_length;
|
|
uint32 call_id = -1;
|
|
int rpc_length = length + 0xFF;
|
|
uint8* rpc_data = xmalloc(rpc_length);
|
|
|
|
if (rpc->read_buffer_len > 0)
|
|
{
|
|
if (rpc->read_buffer_len > length)
|
|
{
|
|
/*TODO fix read_buffer is too long problem */
|
|
printf("ERROR! RPCH Stores data in read_buffer fits not in data on rpc_read.\n");
|
|
return -1;
|
|
}
|
|
|
|
memcpy(data, rpc->read_buffer, rpc->read_buffer_len);
|
|
read += rpc->read_buffer_len;
|
|
xfree(rpc->read_buffer);
|
|
rpc->read_buffer_len = 0;
|
|
}
|
|
|
|
while (true)
|
|
{
|
|
status = rpc_out_read(rpc, rpc_data, rpc_length);
|
|
|
|
if (status == 0)
|
|
{
|
|
xfree(rpc_data);
|
|
return read;
|
|
}
|
|
else if (status < 0)
|
|
{
|
|
printf("\nError! rpc_out_read() returned negative value. BytesSent: %d, BytesReceived: %d\n",
|
|
rpc->BytesSent, rpc->BytesReceived);
|
|
|
|
xfree(rpc_data);
|
|
return status;
|
|
}
|
|
|
|
frag_length = *(uint16*)(rpc_data + 8);
|
|
auth_length = *(uint16*)(rpc_data + 10);
|
|
call_id = *(uint32*)(rpc_data + 12);
|
|
status = *(uint32*)(rpc_data + 16); /* alloc_hint */
|
|
auth_pad_length = *(rpc_data + frag_length - auth_length - 6); /* -6 = -8 + 2 (sec_trailer + 2) */
|
|
|
|
/* data_length must be calculated because alloc_hint carries size of more than one pdu */
|
|
data_length = frag_length - auth_length - 24 - 8 - auth_pad_length; /* 24 is header; 8 is sec_trailer */
|
|
|
|
if (status == 4)
|
|
continue;
|
|
|
|
if (read + data_length > length) /* if read data is greater then given buffer */
|
|
{
|
|
rpc->read_buffer_len = read + data_length - length;
|
|
rpc->read_buffer = xmalloc(rpc->read_buffer_len);
|
|
|
|
data_length -= rpc->read_buffer_len;
|
|
|
|
memcpy(rpc->read_buffer, rpc_data + 24 + data_length, rpc->read_buffer_len);
|
|
}
|
|
|
|
memcpy(data + read, rpc_data + 24, data_length);
|
|
|
|
read += data_length;
|
|
|
|
if (status > data_length && read < length)
|
|
continue;
|
|
|
|
break;
|
|
}
|
|
|
|
xfree(rpc_data);
|
|
|
|
return read;
|
|
}
|
|
|
|
boolean rpc_connect(rdpRpc* rpc)
|
|
{
|
|
int status;
|
|
uint8* pdu;
|
|
int pdu_length;
|
|
|
|
if (!rpc_out_send_CONN_A1(rpc))
|
|
{
|
|
printf("rpc_out_send_CONN_A1 fault!\n");
|
|
return false;
|
|
}
|
|
|
|
pdu_length = 0xFFFF;
|
|
pdu = xmalloc(pdu_length);
|
|
|
|
status = rpc_out_read(rpc, pdu, pdu_length);
|
|
|
|
if (!rpc_in_send_CONN_B1(rpc))
|
|
{
|
|
printf("rpc_out_send_CONN_A1 fault!\n");
|
|
return false;
|
|
}
|
|
|
|
status = rpc_out_read(rpc, pdu, pdu_length);
|
|
|
|
/* [MS-RPCH] 3.2.1.5.3.1 Connection Establishment
|
|
* at this point VirtualChannel is created
|
|
*/
|
|
if (!rpc_in_send_bind(rpc))
|
|
{
|
|
printf("rpc_out_send_bind fault!\n");
|
|
return false;
|
|
}
|
|
|
|
if (!rpc_out_recv_bind_ack(rpc))
|
|
{
|
|
printf("rpc_out_recv_bind_ack fault!\n");
|
|
return false;
|
|
}
|
|
|
|
if (!rpc_in_send_rpc_auth_3(rpc))
|
|
{
|
|
printf("rpc_out_send_rpc_auth_3 fault!\n");
|
|
return false;
|
|
}
|
|
|
|
xfree(pdu);
|
|
return true;
|
|
}
|
|
|
|
rdpRpc* rpc_new(rdpSettings* settings)
|
|
{
|
|
rdpRpc* rpc = (rdpRpc*) xnew(rdpRpc);
|
|
|
|
if (rpc != NULL)
|
|
{
|
|
rpc->http_in = (rdpRpcHTTP*) xnew(rdpRpcHTTP);
|
|
rpc->http_out = (rdpRpcHTTP*) xnew(rdpRpcHTTP);
|
|
|
|
rpc->http_in->ntlm = ntlm_new();
|
|
rpc->http_out->ntlm = ntlm_new();
|
|
rpc->http_in->state = RPC_HTTP_DISCONNECTED;
|
|
rpc->http_out->state = RPC_HTTP_DISCONNECTED;
|
|
|
|
rpc->http_in->context = http_context_new();
|
|
http_context_set_method(rpc->http_in->context, "RPC_IN_DATA");
|
|
http_context_set_uri(rpc->http_in->context, "/rpc/rpcproxy.dll?localhost:3388");
|
|
http_context_set_accept(rpc->http_in->context, "application/rpc");
|
|
http_context_set_cache_control(rpc->http_in->context, "no-cache");
|
|
http_context_set_connection(rpc->http_in->context, "Keep-Alive");
|
|
http_context_set_user_agent(rpc->http_in->context, "MSRPC");
|
|
http_context_set_host(rpc->http_in->context, settings->tsg_hostname);
|
|
http_context_set_pragma(rpc->http_in->context,
|
|
"ResourceTypeUuid=44e265dd-7daf-42cd-8560-3cdb6e7a2729, "
|
|
"SessionId=33ad20ac-7469-4f63-946d-113eac21a23c");
|
|
|
|
rpc->http_out->context = http_context_new();
|
|
http_context_set_method(rpc->http_out->context, "RPC_OUT_DATA");
|
|
http_context_set_uri(rpc->http_out->context, "/rpc/rpcproxy.dll?localhost:3388");
|
|
http_context_set_accept(rpc->http_out->context, "application/rpc");
|
|
http_context_set_cache_control(rpc->http_out->context, "no-cache");
|
|
http_context_set_connection(rpc->http_out->context, "Keep-Alive");
|
|
http_context_set_user_agent(rpc->http_out->context, "MSRPC");
|
|
http_context_set_host(rpc->http_out->context, settings->tsg_hostname);
|
|
http_context_set_pragma(rpc->http_out->context,
|
|
"ResourceTypeUuid=44e265dd-7daf-42cd-8560-3cdb6e7a2729, "
|
|
"SessionId=33ad20ac-7469-4f63-946d-113eac21a23c");
|
|
|
|
rpc->read_buffer = NULL;
|
|
rpc->write_buffer = NULL;
|
|
rpc->read_buffer_len = 0;
|
|
rpc->write_buffer_len = 0;
|
|
|
|
rpc->BytesReceived = 0;
|
|
rpc->AwailableWindow = 0;
|
|
rpc->BytesSent = 0;
|
|
rpc->RecAwailableWindow = 0;
|
|
|
|
rpc->settings = settings;
|
|
|
|
rpc->ntlm = ntlm_new();
|
|
|
|
rpc->call_id = 0;
|
|
}
|
|
|
|
return rpc;
|
|
}
|