FreeRDP/libfreerdp/core/freerdp.c

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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
* FreeRDP Core
*
* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* 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 "rdp.h"
#include "input.h"
#include "update.h"
#include "surface.h"
#include "transport.h"
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#include "connection.h"
#include "message.h"
#include <assert.h>
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#include <winpr/string.h>
#include <winpr/stream.h>
#include <winpr/wtsapi.h>
#include <freerdp/freerdp.h>
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#include <freerdp/error.h>
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#include <freerdp/event.h>
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#include <freerdp/locale/keyboard.h>
#include <freerdp/channels/channels.h>
#include <freerdp/version.h>
#include <freerdp/log.h>
#define TAG FREERDP_TAG("core")
/* connectErrorCode is 'extern' in error.h. See comment there.*/
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/** Creates a new connection based on the settings found in the "instance" parameter
* It will use the callbacks registered on the structure to process the pre/post connect operations
* that the caller requires.
* @see struct rdp_freerdp in freerdp.h
*
* @param instance - pointer to a rdp_freerdp structure that contains base information to establish the connection.
* On return, this function will be initialized with the new connection's settings.
*
* @return TRUE if successful. FALSE otherwise.
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*
*/
BOOL freerdp_connect(freerdp* instance)
{
rdpRdp* rdp;
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BOOL status = TRUE;
rdpSettings* settings;
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ConnectionResultEventArgs e;
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/* We always set the return code to 0 before we start the connect sequence*/
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connectErrorCode = 0;
freerdp_set_last_error(instance->context, FREERDP_ERROR_SUCCESS);
rdp = instance->context->rdp;
settings = instance->settings;
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instance->context->codecs = codecs_new(instance->context);
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IFCALLRET(instance->PreConnect, status, instance);
if (settings->KeyboardLayout == KBD_JAPANESE_INPUT_SYSTEM_MS_IME2002)
{
settings->KeyboardType = 7;
settings->KeyboardSubType = 2;
settings->KeyboardFunctionKey = 12;
}
if (!status)
{
if (!freerdp_get_last_error(rdp->context))
freerdp_set_last_error(instance->context, FREERDP_ERROR_PRE_CONNECT_FAILED);
WLog_ERR(TAG, "freerdp_pre_connect failed");
goto freerdp_connect_finally;
}
status = rdp_client_connect(rdp);
/* --authonly tests the connection without a UI */
if (instance->settings->AuthenticationOnly)
{
WLog_ERR(TAG, "Authentication only, exit status %d", !status);
goto freerdp_connect_finally;
}
if (status)
{
if (instance->settings->DumpRemoteFx)
{
instance->update->pcap_rfx = pcap_open(instance->settings->DumpRemoteFxFile, TRUE);
if (instance->update->pcap_rfx)
instance->update->dump_rfx = TRUE;
}
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IFCALLRET(instance->PostConnect, status, instance);
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if (!status || !update_post_connect(instance->update))
{
WLog_ERR(TAG, "freerdp_post_connect failed");
if (!freerdp_get_last_error(rdp->context))
freerdp_set_last_error(instance->context, FREERDP_ERROR_POST_CONNECT_FAILED);
goto freerdp_connect_finally;
}
if (instance->settings->PlayRemoteFx)
{
wStream* s;
rdpUpdate* update;
pcap_record record;
update = instance->update;
update->pcap_rfx = pcap_open(settings->PlayRemoteFxFile, FALSE);
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if (!update->pcap_rfx)
{
status = FALSE;
goto freerdp_connect_finally;
}
else
{
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update->play_rfx = TRUE;
}
while (pcap_has_next_record(update->pcap_rfx))
{
pcap_get_next_record_header(update->pcap_rfx, &record);
if (!(s = StreamPool_Take(rdp->transport->ReceivePool, record.length)))
break;
record.data = Stream_Buffer(s);
pcap_get_next_record_content(update->pcap_rfx, &record);
Stream_SetLength(s,record.length);
Stream_SetPosition(s, 0);
update->BeginPaint(update->context);
update_recv_surfcmds(update, Stream_Length(s) , s);
update->EndPaint(update->context);
Stream_Release(s);
}
pcap_close(update->pcap_rfx);
update->pcap_rfx = NULL;
status = TRUE;
goto freerdp_connect_finally;
}
}
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if (rdp->errorInfo == ERRINFO_SERVER_INSUFFICIENT_PRIVILEGES)
freerdp_set_last_error(instance->context, FREERDP_ERROR_INSUFFICIENT_PRIVILEGES);
SetEvent(rdp->transport->connectedEvent);
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freerdp_connect_finally:
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EventArgsInit(&e, "freerdp");
e.result = status ? 0 : -1;
PubSub_OnConnectionResult(instance->context->pubSub, instance->context, &e);
return status;
}
BOOL freerdp_get_fds(freerdp* instance, void** rfds, int* rcount, void** wfds, int* wcount)
{
rdpRdp* rdp = instance->context->rdp;
transport_get_fds(rdp->transport, rfds, rcount);
return TRUE;
}
BOOL freerdp_check_fds(freerdp* instance)
{
int status;
rdpRdp* rdp;
if (!instance)
return FALSE;
if (!instance->context)
return FALSE;
if (!instance->context->rdp)
return FALSE;
rdp = instance->context->rdp;
status = rdp_check_fds(rdp);
if (status < 0)
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{
TerminateEventArgs e;
rdpContext* context = instance->context;
WLog_DBG(TAG, "rdp_check_fds() - %i", status);
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EventArgsInit(&e, "freerdp");
e.code = 0;
PubSub_OnTerminate(context->pubSub, context, &e);
return FALSE;
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}
return TRUE;
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}
DWORD freerdp_get_event_handles(rdpContext* context, HANDLE* events, DWORD count)
{
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DWORD nCount = 0;
nCount += transport_get_event_handles(context->rdp->transport, events, count);
if (nCount == 0)
return 0;
if (events && (nCount < count))
events[nCount++] = freerdp_channels_get_event_handle(context->instance);
else
return 0;
return nCount;
}
BOOL freerdp_check_event_handles(rdpContext* context)
{
BOOL status;
status = freerdp_check_fds(context->instance);
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if (!status)
{
WLog_ERR(TAG, "freerdp_check_fds() failed - %i", status);
return FALSE;
}
status = freerdp_channels_check_fds(context->channels, context->instance);
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if (!status)
{
WLog_ERR(TAG, "freerdp_channels_check_fds() failed - %i", status);
return FALSE;
}
return status;
}
wMessageQueue* freerdp_get_message_queue(freerdp* instance, DWORD id)
{
wMessageQueue* queue = NULL;
switch (id)
{
case FREERDP_UPDATE_MESSAGE_QUEUE:
queue = instance->update->queue;
break;
case FREERDP_INPUT_MESSAGE_QUEUE:
queue = instance->input->queue;
break;
}
return queue;
}
HANDLE freerdp_get_message_queue_event_handle(freerdp* instance, DWORD id)
{
HANDLE event = NULL;
wMessageQueue* queue = NULL;
queue = freerdp_get_message_queue(instance, id);
if (queue)
event = MessageQueue_Event(queue);
return event;
}
int freerdp_message_queue_process_message(freerdp* instance, DWORD id, wMessage* message)
{
int status = -1;
switch (id)
{
case FREERDP_UPDATE_MESSAGE_QUEUE:
status = update_message_queue_process_message(instance->update, message);
break;
case FREERDP_INPUT_MESSAGE_QUEUE:
status = input_message_queue_process_message(instance->input, message);
break;
}
return status;
}
int freerdp_message_queue_process_pending_messages(freerdp* instance, DWORD id)
{
int status = -1;
switch (id)
{
case FREERDP_UPDATE_MESSAGE_QUEUE:
status = update_message_queue_process_pending_messages(instance->update);
break;
case FREERDP_INPUT_MESSAGE_QUEUE:
status = input_message_queue_process_pending_messages(instance->input);
break;
}
return status;
}
static int freerdp_send_channel_data(freerdp* instance, UINT16 channelId, BYTE* data, int size)
{
return rdp_send_channel_data(instance->context->rdp, channelId, data, size);
}
BOOL freerdp_disconnect(freerdp* instance)
{
rdpRdp* rdp;
rdp = instance->context->rdp;
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rdp_client_disconnect(rdp);
update_post_disconnect(instance->update);
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IFCALL(instance->PostDisconnect, instance);
if (instance->update->pcap_rfx)
{
instance->update->dump_rfx = FALSE;
pcap_close(instance->update->pcap_rfx);
instance->update->pcap_rfx = NULL;
}
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codecs_free(instance->context->codecs);
return TRUE;
}
BOOL freerdp_reconnect(freerdp* instance)
{
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BOOL status;
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rdpRdp* rdp = instance->context->rdp;
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status = rdp_client_reconnect(rdp);
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return status;
}
BOOL freerdp_shall_disconnect(freerdp* instance)
{
return instance->context->rdp->disconnect;
}
FREERDP_API BOOL freerdp_focus_required(freerdp* instance)
{
rdpRdp* rdp;
BOOL bRetCode = FALSE;
rdp = instance->context->rdp;
if (rdp->resendFocus)
{
bRetCode = TRUE;
rdp->resendFocus = FALSE;
}
return bRetCode;
}
void freerdp_set_focus(freerdp* instance)
{
rdpRdp* rdp;
rdp = instance->context->rdp;
rdp->resendFocus = TRUE;
}
void freerdp_get_version(int* major, int* minor, int* revision)
{
if (major != NULL)
*major = FREERDP_VERSION_MAJOR;
if (minor != NULL)
*minor = FREERDP_VERSION_MINOR;
if (revision != NULL)
*revision = FREERDP_VERSION_REVISION;
}
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const char* freerdp_get_version_string(void)
{
return FREERDP_VERSION_FULL;
}
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const char* freerdp_get_build_date(void)
{
static char build_date[64];
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sprintf_s(build_date, sizeof(build_date), "%s %s", __DATE__, __TIME__);
return build_date;
}
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const char* freerdp_get_build_revision(void)
{
return GIT_REVISION;
}
static wEventType FreeRDP_Events[] =
{
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DEFINE_EVENT_ENTRY(WindowStateChange)
DEFINE_EVENT_ENTRY(ResizeWindow)
DEFINE_EVENT_ENTRY(LocalResizeWindow)
DEFINE_EVENT_ENTRY(EmbedWindow)
DEFINE_EVENT_ENTRY(PanningChange)
DEFINE_EVENT_ENTRY(ZoomingChange)
DEFINE_EVENT_ENTRY(ErrorInfo)
DEFINE_EVENT_ENTRY(Terminate)
DEFINE_EVENT_ENTRY(ConnectionResult)
DEFINE_EVENT_ENTRY(ChannelConnected)
DEFINE_EVENT_ENTRY(ChannelDisconnected)
DEFINE_EVENT_ENTRY(MouseEvent)
};
/** Allocator function for a rdp context.
* The function will allocate a rdpRdp structure using rdp_new(), then copy
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* its contents to the appropriate fields in the rdp_freerdp structure given in parameters.
* It will also initialize the 'context' field in the rdp_freerdp structure as needed.
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* If the caller has set the ContextNew callback in the 'instance' parameter, it will be called at the end of the function.
*
* @param instance - Pointer to the rdp_freerdp structure that will be initialized with the new context.
*/
BOOL freerdp_context_new(freerdp* instance)
{
rdpRdp* rdp;
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rdpContext* context;
BOOL ret = TRUE;
instance->context = (rdpContext*) calloc(1, instance->ContextSize);
if (!instance->context)
return FALSE;
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context = instance->context;
context->instance = instance;
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context->ServerMode = FALSE;
context->settings = instance->settings;
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context->pubSub = PubSub_New(TRUE);
if(!context->pubSub)
goto out_error_pubsub;
PubSub_AddEventTypes(context->pubSub, FreeRDP_Events, sizeof(FreeRDP_Events) / sizeof(wEventType));
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context->metrics = metrics_new(context);
if (!context->metrics)
goto out_error_metrics_new;
rdp = rdp_new(context);
if (!rdp)
goto out_error_rdp_new;
instance->input = rdp->input;
instance->update = rdp->update;
instance->settings = rdp->settings;
instance->autodetect = rdp->autodetect;
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context->graphics = graphics_new(context);
if(!context->graphics)
goto out_error_graphics_new;
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context->rdp = rdp;
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context->input = instance->input;
context->update = instance->update;
context->settings = instance->settings;
context->autodetect = instance->autodetect;
instance->update->context = instance->context;
instance->update->pointer->context = instance->context;
instance->update->primary->context = instance->context;
instance->update->secondary->context = instance->context;
instance->update->altsec->context = instance->context;
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instance->input->context = context;
instance->autodetect->context = context;
update_register_client_callbacks(rdp->update);
IFCALLRET(instance->ContextNew, ret, instance, instance->context);
if (ret)
return TRUE;
out_error_graphics_new:
rdp_free(rdp);
out_error_rdp_new:
metrics_free(context->metrics);
out_error_metrics_new:
PubSub_Free(context->pubSub);
out_error_pubsub:
free(instance->context);
return FALSE;
}
/** Deallocator function for a rdp context.
* The function will deallocate the resources from the 'instance' parameter that were allocated from a call
* to freerdp_context_new().
* If the ContextFree callback is set in the 'instance' parameter, it will be called before deallocation occurs.
*
* @param instance - Pointer to the rdp_freerdp structure that was initialized by a call to freerdp_context_new().
* On return, the fields associated to the context are invalid.
*/
void freerdp_context_free(freerdp* instance)
{
if (!instance)
return;
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if (!instance->context)
return;
IFCALL(instance->ContextFree, instance, instance->context);
rdp_free(instance->context->rdp);
instance->context->rdp = NULL;
graphics_free(instance->context->graphics);
instance->context->graphics = NULL;
PubSub_Free(instance->context->pubSub);
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metrics_free(instance->context->metrics);
free(instance->context);
instance->context = NULL;
}
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UINT32 freerdp_error_info(freerdp* instance)
{
return instance->context->rdp->errorInfo;
}
void freerdp_set_error_info(rdpRdp* rdp, UINT32 error) {
rdp->errorInfo = error;
}
UINT32 freerdp_get_last_error(rdpContext* context)
{
return context->LastError;
}
const char* freerdp_get_last_error_name(UINT32 code)
{
const char *name = NULL;
const UINT32 cls = GET_FREERDP_ERROR_CLASS(code);
const UINT32 type = GET_FREERDP_ERROR_TYPE(code);
switch(cls)
{
case FREERDP_ERROR_ERRBASE_CLASS:
name = freerdp_get_error_base_name(type);
break;
case FREERDP_ERROR_ERRINFO_CLASS:
name = freerdp_get_error_info_name(type);
break;
case FREERDP_ERROR_CONNECT_CLASS:
name = freerdp_get_error_connect_name(type);
break;
default:
name = "Unknown error class";
break;
}
return name;
}
const char* freerdp_get_last_error_string(UINT32 code)
{
const char* string = NULL;
const UINT32 cls = GET_FREERDP_ERROR_CLASS(code);
const UINT32 type = GET_FREERDP_ERROR_TYPE(code);
switch(cls)
{
case FREERDP_ERROR_ERRBASE_CLASS:
string = freerdp_get_error_base_string(type);
break;
case FREERDP_ERROR_ERRINFO_CLASS:
string = freerdp_get_error_info_string(type);
break;
case FREERDP_ERROR_CONNECT_CLASS:
string = freerdp_get_error_connect_string(type);
break;
default:
string = "Unknown error class";
break;
}
return string;
}
void freerdp_set_last_error(rdpContext* context, UINT32 lastError)
{
if (lastError)
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WLog_ERR(TAG, "freerdp_set_last_error %s [0x%04X]",
freerdp_get_last_error_name(lastError), lastError);
context->LastError = lastError;
switch (lastError)
{
case FREERDP_ERROR_PRE_CONNECT_FAILED:
connectErrorCode = PREECONNECTERROR;
break;
case FREERDP_ERROR_CONNECT_UNDEFINED:
connectErrorCode = UNDEFINEDCONNECTERROR;
break;
case FREERDP_ERROR_POST_CONNECT_FAILED:
connectErrorCode = POSTCONNECTERROR;
break;
case FREERDP_ERROR_DNS_ERROR:
connectErrorCode = DNSERROR;
break;
case FREERDP_ERROR_DNS_NAME_NOT_FOUND:
connectErrorCode = DNSNAMENOTFOUND;
break;
case FREERDP_ERROR_CONNECT_FAILED:
connectErrorCode = CONNECTERROR;
break;
case FREERDP_ERROR_MCS_CONNECT_INITIAL_ERROR:
connectErrorCode = MCSCONNECTINITIALERROR;
break;
case FREERDP_ERROR_TLS_CONNECT_FAILED:
connectErrorCode = TLSCONNECTERROR;
break;
case FREERDP_ERROR_AUTHENTICATION_FAILED:
connectErrorCode = AUTHENTICATIONERROR;
break;
case FREERDP_ERROR_INSUFFICIENT_PRIVILEGES:
connectErrorCode = INSUFFICIENTPRIVILEGESERROR;
break;
case FREERDP_ERROR_CONNECT_CANCELLED:
connectErrorCode = CANCELEDBYUSER;
break;
case FREERDP_ERROR_SECURITY_NEGO_CONNECT_FAILED:
connectErrorCode = CONNECTERROR;
break;
case FREERDP_ERROR_CONNECT_TRANSPORT_FAILED:
connectErrorCode = CONNECTERROR;
break;
}
}
/** Allocator function for the rdp_freerdp structure.
* @return an allocated structure filled with 0s. Need to be deallocated using freerdp_free()
*/
freerdp* freerdp_new()
{
freerdp* instance;
instance = (freerdp*) calloc(1, sizeof(freerdp));
if (!instance)
return NULL;
instance->ContextSize = sizeof(rdpContext);
instance->SendChannelData = freerdp_send_channel_data;
instance->ReceiveChannelData = freerdp_channels_data;
return instance;
}
/** Deallocator function for the rdp_freerdp structure.
* @param instance - pointer to the rdp_freerdp structure to deallocate.
* On return, this pointer is not valid anymore.
*/
void freerdp_free(freerdp* instance)
{
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free(instance);
}
FREERDP_API ULONG freerdp_get_transport_sent(rdpContext* context, BOOL resetCount) {
ULONG written = context->rdp->transport->written;
if (resetCount)
context->rdp->transport->written = 0;
return written;
}