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FreeRDP/client/Windows/wf_client.c
akallabeth d7ebec5a65 [tidy] move loop variable declaration to loop
2024-02-22 12:31:50 +01:00

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Windows Client
*
* Copyright 2009-2011 Jay Sorg
* Copyright 2010-2011 Vic Lee
* Copyright 2010-2011 Marc-Andre Moreau <marcandre.moreau@gmail.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.
*/
#include <freerdp/config.h>
#include <winpr/windows.h>
#include <winpr/crt.h>
#include <winpr/assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tchar.h>
#include <winpr/assert.h>
#include <sys/types.h>
#include <io.h>
#ifdef WITH_PROGRESS_BAR
#include <shobjidl.h>
#endif
#ifdef WITH_WINDOWS_CERT_STORE
#include <wincrypt.h>
#endif
#include <freerdp/log.h>
#include <freerdp/freerdp.h>
#include <freerdp/constants.h>
#include <freerdp/settings.h>
#include <freerdp/locale/keyboard.h>
#include <freerdp/codec/region.h>
#include <freerdp/client/cmdline.h>
#include <freerdp/client/channels.h>
#include <freerdp/channels/channels.h>
#include "wf_gdi.h"
#include "wf_rail.h"
#include "wf_channels.h"
#include "wf_graphics.h"
#include "resource/resource.h"
#define TAG CLIENT_TAG("windows")
#define WM_FREERDP_SHOWWINDOW (WM_USER + 100)
static BOOL wf_has_console(void)
{
#ifdef WITH_WIN_CONSOLE
int file = _fileno(stdin);
int tty = _isatty(file);
#else
int file = -1;
int tty = 0;
#endif
WLog_INFO(TAG, "Detected stdin=%d -> %s mode", file, tty ? "console" : "gui");
return tty;
}
static BOOL wf_end_paint(rdpContext* context)
{
rdpGdi* gdi;
int ninvalid;
RECT updateRect;
HGDI_RGN cinvalid;
REGION16 invalidRegion;
RECTANGLE_16 invalidRect;
const RECTANGLE_16* extents;
wfContext* wfc = (wfContext*)context;
gdi = context->gdi;
ninvalid = gdi->primary->hdc->hwnd->ninvalid;
cinvalid = gdi->primary->hdc->hwnd->cinvalid;
if (ninvalid < 1)
return TRUE;
region16_init(&invalidRegion);
for (int i = 0; i < ninvalid; i++)
{
invalidRect.left = cinvalid[i].x;
invalidRect.top = cinvalid[i].y;
invalidRect.right = cinvalid[i].x + cinvalid[i].w;
invalidRect.bottom = cinvalid[i].y + cinvalid[i].h;
region16_union_rect(&invalidRegion, &invalidRegion, &invalidRect);
}
if (!region16_is_empty(&invalidRegion))
{
extents = region16_extents(&invalidRegion);
updateRect.left = extents->left;
updateRect.top = extents->top;
updateRect.right = extents->right;
updateRect.bottom = extents->bottom;
wf_scale_rect(wfc, &updateRect);
InvalidateRect(wfc->hwnd, &updateRect, FALSE);
if (wfc->rail)
wf_rail_invalidate_region(wfc, &invalidRegion);
}
region16_uninit(&invalidRegion);
if (!wfc->is_shown)
{
wfc->is_shown = TRUE;
#ifdef WITH_PROGRESS_BAR
if (wfc->taskBarList)
{
wfc->taskBarList->lpVtbl->SetProgressState(wfc->taskBarList, wfc->hwnd,
TBPF_NOPROGRESS);
}
#endif
PostMessage(wfc->hwnd, WM_FREERDP_SHOWWINDOW, 0, 0);
WLog_INFO(TAG, "Window is shown!");
}
return TRUE;
}
static BOOL wf_begin_paint(rdpContext* context)
{
HGDI_DC hdc;
if (!context || !context->gdi || !context->gdi->primary || !context->gdi->primary->hdc)
return FALSE;
hdc = context->gdi->primary->hdc;
if (!hdc || !hdc->hwnd || !hdc->hwnd->invalid)
return FALSE;
hdc->hwnd->invalid->null = TRUE;
hdc->hwnd->ninvalid = 0;
return TRUE;
}
static BOOL wf_desktop_resize(rdpContext* context)
{
BOOL same;
RECT rect;
rdpSettings* settings;
wfContext* wfc = (wfContext*)context;
if (!context || !context->settings)
return FALSE;
settings = context->settings;
if (wfc->primary)
{
same = (wfc->primary == wfc->drawing) ? TRUE : FALSE;
wf_image_free(wfc->primary);
wfc->primary =
wf_image_new(wfc, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight),
context->gdi->dstFormat, NULL);
}
if (!gdi_resize_ex(context->gdi, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight), 0,
context->gdi->dstFormat, wfc->primary->pdata, NULL))
return FALSE;
if (same)
wfc->drawing = wfc->primary;
if (wfc->fullscreen != TRUE)
{
if (wfc->hwnd && !freerdp_settings_get_bool(settings, FreeRDP_SmartSizing))
SetWindowPos(wfc->hwnd, HWND_TOP, -1, -1,
freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth) + wfc->diff.x,
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight) + wfc->diff.y,
SWP_NOMOVE);
}
else
{
wf_update_offset(wfc);
GetWindowRect(wfc->hwnd, &rect);
InvalidateRect(wfc->hwnd, &rect, TRUE);
}
return TRUE;
}
static BOOL wf_pre_connect(freerdp* instance)
{
UINT32 rc;
wfContext* wfc;
UINT32 desktopWidth;
UINT32 desktopHeight;
rdpContext* context;
rdpSettings* settings;
WINPR_ASSERT(instance);
WINPR_ASSERT(instance->context);
WINPR_ASSERT(instance->context->settings);
context = instance->context;
wfc = (wfContext*)instance->context;
settings = context->settings;
if (!freerdp_settings_set_uint32(settings, FreeRDP_OsMajorType, OSMAJORTYPE_WINDOWS))
return FALSE;
if (!freerdp_settings_set_uint32(settings, FreeRDP_OsMinorType, OSMINORTYPE_WINDOWS_NT))
return FALSE;
wfc->fullscreen = freerdp_settings_get_bool(settings, FreeRDP_Fullscreen);
wfc->fullscreen_toggle = freerdp_settings_get_bool(settings, FreeRDP_ToggleFullscreen);
desktopWidth = freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth);
desktopHeight = freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight);
if (wfc->percentscreen > 0)
{
desktopWidth = (GetSystemMetrics(SM_CXSCREEN) * wfc->percentscreen) / 100;
if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopWidth, desktopWidth))
return FALSE;
desktopHeight = (GetSystemMetrics(SM_CYSCREEN) * wfc->percentscreen) / 100;
if (!freerdp_settings_set_uint32(settings, FreeRDP_DesktopHeight, desktopHeight))
return FALSE;
}
if (wfc->fullscreen)
{
if (freerdp_settings_get_bool(settings, FreeRDP_UseMultimon))
{
desktopWidth = GetSystemMetrics(SM_CXVIRTUALSCREEN);
desktopHeight = GetSystemMetrics(SM_CYVIRTUALSCREEN);
}
else
{
desktopWidth = GetSystemMetrics(SM_CXSCREEN);
desktopHeight = GetSystemMetrics(SM_CYSCREEN);
}
}
/* FIXME: desktopWidth has a limitation that it should be divisible by 4,
* otherwise the screen will crash when connecting to an XP desktop.*/
desktopWidth = (desktopWidth + 3) & (~3);
if (desktopWidth != freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth))
{
freerdp_settings_set_uint32(settings, FreeRDP_DesktopWidth, desktopWidth);
}
if (desktopHeight != freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight))
{
freerdp_settings_set_uint32(settings, FreeRDP_DesktopHeight, desktopHeight);
}
rc = freerdp_keyboard_init(freerdp_settings_get_uint32(settings, FreeRDP_KeyboardLayout));
freerdp_settings_set_uint32(settings, FreeRDP_KeyboardLayout, rc);
PubSub_SubscribeChannelConnected(instance->context->pubSub, wf_OnChannelConnectedEventHandler);
PubSub_SubscribeChannelDisconnected(instance->context->pubSub,
wf_OnChannelDisconnectedEventHandler);
return TRUE;
}
static void wf_append_item_to_system_menu(HMENU hMenu, UINT fMask, UINT wID, const wchar_t* text,
wfContext* wfc)
{
MENUITEMINFO item_info = { 0 };
item_info.fMask = fMask;
item_info.cbSize = sizeof(MENUITEMINFO);
item_info.wID = wID;
item_info.fType = MFT_STRING;
item_info.dwTypeData = _wcsdup(text);
item_info.cch = (UINT)_wcslen(text);
if (wfc)
item_info.dwItemData = (ULONG_PTR)wfc;
InsertMenuItem(hMenu, wfc->systemMenuInsertPosition++, TRUE, &item_info);
}
static void wf_add_system_menu(wfContext* wfc)
{
HMENU hMenu;
if (wfc->fullscreen && !wfc->fullscreen_toggle)
{
return;
}
if (freerdp_settings_get_bool(wfc->common.context.settings, FreeRDP_DynamicResolutionUpdate))
{
return;
}
hMenu = GetSystemMenu(wfc->hwnd, FALSE);
wf_append_item_to_system_menu(hMenu,
MIIM_CHECKMARKS | MIIM_FTYPE | MIIM_ID | MIIM_STRING | MIIM_DATA,
SYSCOMMAND_ID_SMARTSIZING, L"Smart sizing", wfc);
if (freerdp_settings_get_bool(wfc->common.context.settings, FreeRDP_SmartSizing))
{
CheckMenuItem(hMenu, SYSCOMMAND_ID_SMARTSIZING, MF_CHECKED);
}
if (freerdp_settings_get_bool(wfc->common.context.settings, FreeRDP_RemoteAssistanceMode))
wf_append_item_to_system_menu(hMenu, MIIM_FTYPE | MIIM_ID | MIIM_STRING,
SYSCOMMAND_ID_REQUEST_CONTROL, L"Request control", wfc);
}
static WCHAR* wf_window_get_title(rdpSettings* settings)
{
BOOL port;
WCHAR* windowTitle = NULL;
size_t size;
WCHAR prefix[] = L"FreeRDP:";
if (!settings)
return NULL;
const char* name = freerdp_settings_get_string(settings, FreeRDP_ServerHostname);
if (freerdp_settings_get_string(settings, FreeRDP_WindowTitle))
return ConvertUtf8ToWCharAlloc(freerdp_settings_get_string(settings, FreeRDP_WindowTitle),
NULL);
port = (freerdp_settings_get_uint32(settings, FreeRDP_ServerPort) != 3389);
size = strlen(name) + 16 + wcslen(prefix);
windowTitle = calloc(size, sizeof(WCHAR));
if (!windowTitle)
return NULL;
if (!port)
_snwprintf_s(windowTitle, size, _TRUNCATE, L"%s %S", prefix, name);
else
_snwprintf_s(windowTitle, size, _TRUNCATE, L"%s %S:%u", prefix, name,
freerdp_settings_get_uint32(settings, FreeRDP_ServerPort));
return windowTitle;
}
static BOOL wf_post_connect(freerdp* instance)
{
rdpGdi* gdi;
DWORD dwStyle;
rdpCache* cache;
wfContext* wfc;
rdpContext* context;
rdpSettings* settings;
EmbedWindowEventArgs e;
const UINT32 format = PIXEL_FORMAT_BGRX32;
WINPR_ASSERT(instance);
context = instance->context;
WINPR_ASSERT(context);
settings = context->settings;
WINPR_ASSERT(settings);
wfc = (wfContext*)instance->context;
WINPR_ASSERT(wfc);
wfc->primary =
wf_image_new(wfc, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight), format, NULL);
if (!gdi_init_ex(instance, format, 0, wfc->primary->pdata, NULL))
return FALSE;
cache = instance->context->cache;
WINPR_ASSERT(cache);
gdi = instance->context->gdi;
if (!freerdp_settings_get_bool(settings, FreeRDP_SoftwareGdi))
{
wf_gdi_register_update_callbacks(context->update);
}
wfc->window_title = wf_window_get_title(settings);
if (!wfc->window_title)
return FALSE;
if (freerdp_settings_get_bool(settings, FreeRDP_EmbeddedWindow))
{
if (!freerdp_settings_set_bool(settings, FreeRDP_Decorations, FALSE))
return FALSE;
}
if (wfc->fullscreen)
dwStyle = WS_POPUP;
else if (!freerdp_settings_get_bool(settings, FreeRDP_Decorations))
dwStyle = WS_CHILD | WS_BORDER;
else
dwStyle =
WS_CAPTION | WS_OVERLAPPED | WS_SYSMENU | WS_MINIMIZEBOX | WS_SIZEBOX | WS_MAXIMIZEBOX;
if (!wfc->hwnd)
{
wfc->hwnd = CreateWindowEx(0, wfc->wndClassName, wfc->window_title, dwStyle, 0, 0, 0, 0,
wfc->hWndParent, NULL, wfc->hInstance, NULL);
SetWindowLongPtr(wfc->hwnd, GWLP_USERDATA, (LONG_PTR)wfc);
}
wf_resize_window(wfc);
wf_add_system_menu(wfc);
BitBlt(wfc->primary->hdc, 0, 0, freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth),
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight), NULL, 0, 0, BLACKNESS);
wfc->drawing = wfc->primary;
EventArgsInit(&e, "wfreerdp");
e.embed = FALSE;
e.handle = (void*)wfc->hwnd;
PubSub_OnEmbedWindow(context->pubSub, context, &e);
#ifdef WITH_PROGRESS_BAR
if (wfc->taskBarList)
{
ShowWindow(wfc->hwnd, SW_SHOWMINIMIZED);
wfc->taskBarList->lpVtbl->SetProgressState(wfc->taskBarList, wfc->hwnd, TBPF_INDETERMINATE);
}
#endif
UpdateWindow(wfc->hwnd);
context->update->BeginPaint = wf_begin_paint;
context->update->DesktopResize = wf_desktop_resize;
context->update->EndPaint = wf_end_paint;
wf_register_pointer(context->graphics);
wfc->floatbar = wf_floatbar_new(wfc, wfc->hInstance,
freerdp_settings_get_uint32(settings, FreeRDP_Floatbar));
return TRUE;
}
static void wf_post_disconnect(freerdp* instance)
{
wfContext* wfc;
if (!instance || !instance->context)
return;
wfc = (wfContext*)instance->context;
free(wfc->window_title);
}
static CREDUI_INFOW wfUiInfo = { sizeof(CREDUI_INFOW), NULL, L"Enter your credentials",
L"Remote Desktop Security", NULL };
static BOOL wf_authenticate_ex(freerdp* instance, char** username, char** password, char** domain,
rdp_auth_reason reason)
{
wfContext* wfc;
BOOL fSave;
DWORD status;
DWORD dwFlags;
WCHAR UserNameW[CREDUI_MAX_USERNAME_LENGTH + 1] = { 0 };
WCHAR UserW[CREDUI_MAX_USERNAME_LENGTH + 1] = { 0 };
WCHAR DomainW[CREDUI_MAX_DOMAIN_TARGET_LENGTH + 1] = { 0 };
WCHAR PasswordW[CREDUI_MAX_PASSWORD_LENGTH + 1] = { 0 };
WINPR_ASSERT(instance);
WINPR_ASSERT(instance->context);
WINPR_ASSERT(instance->context->settings);
wfc = (wfContext*)instance->context;
WINPR_ASSERT(wfc);
WINPR_ASSERT(username);
WINPR_ASSERT(domain);
WINPR_ASSERT(password);
const WCHAR auth[] = L"Target credentials requested";
const WCHAR authPin[] = L"PIN requested";
const WCHAR gwAuth[] = L"Gateway credentials requested";
const WCHAR* titleW = auth;
fSave = FALSE;
dwFlags = CREDUI_FLAGS_DO_NOT_PERSIST | CREDUI_FLAGS_EXCLUDE_CERTIFICATES |
CREDUI_FLAGS_USERNAME_TARGET_CREDENTIALS;
switch (reason)
{
case AUTH_NLA:
break;
case AUTH_TLS:
case AUTH_RDP:
if ((*username) && (*password))
return TRUE;
break;
case AUTH_SMARTCARD_PIN:
dwFlags &= ~CREDUI_FLAGS_USERNAME_TARGET_CREDENTIALS;
dwFlags |= CREDUI_FLAGS_PASSWORD_ONLY_OK | CREDUI_FLAGS_KEEP_USERNAME;
titleW = authPin;
if (*password)
return TRUE;
if (!(*username))
*username = _strdup("PIN");
break;
case GW_AUTH_HTTP:
case GW_AUTH_RDG:
case GW_AUTH_RPC:
titleW = gwAuth;
break;
default:
return FALSE;
}
if (*username)
{
ConvertUtf8ToWChar(*username, UserNameW, ARRAYSIZE(UserNameW));
ConvertUtf8ToWChar(*username, UserW, ARRAYSIZE(UserW));
}
if (*password)
ConvertUtf8ToWChar(*password, PasswordW, ARRAYSIZE(PasswordW));
if (*domain)
ConvertUtf8ToWChar(*domain, DomainW, ARRAYSIZE(DomainW));
if (_wcsnlen(PasswordW, ARRAYSIZE(PasswordW)) == 0)
{
if (!wfc->isConsole &&
freerdp_settings_get_bool(wfc->common.context.settings, FreeRDP_CredentialsFromStdin))
WLog_ERR(TAG, "Flag for stdin read present but stdin is redirected; using GUI");
if (wfc->isConsole &&
freerdp_settings_get_bool(wfc->common.context.settings, FreeRDP_CredentialsFromStdin))
status = CredUICmdLinePromptForCredentialsW(titleW, NULL, 0, UserNameW,
ARRAYSIZE(UserNameW), PasswordW,
ARRAYSIZE(PasswordW), &fSave, dwFlags);
else
status = CredUIPromptForCredentialsW(&wfUiInfo, titleW, NULL, 0, UserNameW,
ARRAYSIZE(UserNameW), PasswordW,
ARRAYSIZE(PasswordW), &fSave, dwFlags);
if (status != NO_ERROR)
{
WLog_ERR(TAG, "CredUIPromptForCredentials unexpected status: 0x%08lX", status);
return FALSE;
}
if ((dwFlags & CREDUI_FLAGS_KEEP_USERNAME) == 0)
{
status = CredUIParseUserNameW(UserNameW, UserW, ARRAYSIZE(UserW), DomainW,
ARRAYSIZE(DomainW));
if (status != NO_ERROR)
{
CHAR User[CREDUI_MAX_USERNAME_LENGTH + 1] = { 0 };
CHAR UserName[CREDUI_MAX_USERNAME_LENGTH + 1] = { 0 };
CHAR Domain[CREDUI_MAX_DOMAIN_TARGET_LENGTH + 1] = { 0 };
ConvertWCharNToUtf8(UserNameW, ARRAYSIZE(UserNameW), UserName, ARRAYSIZE(UserName));
ConvertWCharNToUtf8(UserW, ARRAYSIZE(UserW), User, ARRAYSIZE(User));
ConvertWCharNToUtf8(DomainW, ARRAYSIZE(DomainW), Domain, ARRAYSIZE(Domain));
WLog_ERR(TAG, "Failed to parse UserName: %s into User: %s Domain: %s", UserName,
User, Domain);
return FALSE;
}
}
}
*username = ConvertWCharNToUtf8Alloc(UserW, ARRAYSIZE(UserW), NULL);
if (!(*username))
{
WLog_ERR(TAG, "ConvertWCharNToUtf8Alloc failed", status);
return FALSE;
}
if (_wcsnlen(DomainW, ARRAYSIZE(DomainW)) > 0)
*domain = ConvertWCharNToUtf8Alloc(DomainW, ARRAYSIZE(DomainW), NULL);
else
*domain = _strdup("\0");
if (!(*domain))
{
free(*username);
WLog_ERR(TAG, "strdup failed", status);
return FALSE;
}
*password = ConvertWCharNToUtf8Alloc(PasswordW, ARRAYSIZE(PasswordW), NULL);
if (!(*password))
{
free(*username);
free(*domain);
return FALSE;
}
return TRUE;
}
static WCHAR* wf_format_text(const WCHAR* fmt, ...)
{
int rc;
size_t size = 0;
WCHAR* buffer = NULL;
do
{
WCHAR* tmp;
va_list ap;
va_start(ap, fmt);
rc = _vsnwprintf(buffer, size, fmt, ap);
va_end(ap);
if (rc <= 0)
goto fail;
if ((size_t)rc < size)
return buffer;
size = (size_t)rc + 1;
tmp = realloc(buffer, size * sizeof(WCHAR));
if (!tmp)
goto fail;
buffer = tmp;
} while (TRUE);
fail:
free(buffer);
return NULL;
}
#ifdef WITH_WINDOWS_CERT_STORE
/* https://stackoverflow.com/questions/1231178/load-an-pem-encoded-x-509-certificate-into-windows-cryptoapi/3803333#3803333
*/
/* https://github.com/microsoft/Windows-classic-samples/blob/main/Samples/Win7Samples/security/cryptoapi/peertrust/cpp/peertrust.cpp
*/
/* https://stackoverflow.com/questions/7340504/whats-the-correct-way-to-verify-an-ssl-certificate-in-win32
*/
static void wf_report_error(char* wszMessage, DWORD dwErrCode)
{
LPSTR pwszMsgBuf = NULL;
if (NULL != wszMessage && 0 != *wszMessage)
{
WLog_ERR(TAG, "%s", wszMessage);
}
FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, // Location of message
// definition ignored
dwErrCode, // Message identifier for
// the requested message
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Language identifier for
// the requested message
(LPSTR)&pwszMsgBuf, // Buffer that receives
// the formatted message
0, // Size of output buffer
// not needed as allocate
// buffer flag is set
NULL // Array of insert values
);
if (NULL != pwszMsgBuf)
{
WLog_ERR(TAG, "Error: 0x%08x (%d) %s", dwErrCode, dwErrCode, pwszMsgBuf);
LocalFree(pwszMsgBuf);
}
else
{
WLog_ERR(TAG, "Error: 0x%08x (%d)", dwErrCode, dwErrCode);
}
}
static DWORD wf_is_x509_certificate_trusted(const char* common_name, const char* subject,
const char* issuer, const char* fingerprint)
{
HRESULT hr = CRYPT_E_NOT_FOUND;
DWORD dwChainFlags = CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT;
PCCERT_CONTEXT pCert = NULL;
HCERTCHAINENGINE hChainEngine = NULL;
PCCERT_CHAIN_CONTEXT pChainContext = NULL;
CERT_ENHKEY_USAGE EnhkeyUsage = { 0 };
CERT_USAGE_MATCH CertUsage = { 0 };
CERT_CHAIN_PARA ChainPara = { 0 };
CERT_CHAIN_POLICY_PARA ChainPolicy = { 0 };
CERT_CHAIN_POLICY_STATUS PolicyStatus = { 0 };
CERT_CHAIN_ENGINE_CONFIG EngineConfig = { 0 };
DWORD derPubKeyLen = strlen(fingerprint);
char* derPubKey = calloc(derPubKeyLen, sizeof(char));
if (NULL == derPubKey)
{
WLog_ERR(TAG, "Could not allocate derPubKey");
goto CleanUp;
}
/*
* Convert from PEM format to DER format - removes header and footer and decodes from base64
*/
if (!CryptStringToBinaryA(fingerprint, 0, CRYPT_STRING_BASE64HEADER, derPubKey, &derPubKeyLen,
NULL, NULL))
{
WLog_ERR(TAG, "CryptStringToBinary failed. Err: %d", GetLastError());
goto CleanUp;
}
//---------------------------------------------------------
// Initialize data structures for chain building.
EnhkeyUsage.cUsageIdentifier = 0;
EnhkeyUsage.rgpszUsageIdentifier = NULL;
CertUsage.dwType = USAGE_MATCH_TYPE_AND;
CertUsage.Usage = EnhkeyUsage;
ChainPara.cbSize = sizeof(ChainPara);
ChainPara.RequestedUsage = CertUsage;
ChainPolicy.cbSize = sizeof(ChainPolicy);
PolicyStatus.cbSize = sizeof(PolicyStatus);
EngineConfig.cbSize = sizeof(EngineConfig);
EngineConfig.dwUrlRetrievalTimeout = 0;
pCert = CertCreateCertificateContext(X509_ASN_ENCODING, derPubKey, derPubKeyLen);
if (NULL == pCert)
{
WLog_ERR(TAG, "FAILED: Certificate could not be parsed.");
goto CleanUp;
}
dwChainFlags |= CERT_CHAIN_ENABLE_PEER_TRUST;
// When this flag is set, end entity certificates in the
// Trusted People store are trusted without doing any chain building
// This optimizes the chain building process.
//---------------------------------------------------------
// Create chain engine.
if (!CertCreateCertificateChainEngine(&EngineConfig, &hChainEngine))
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto CleanUp;
}
//-------------------------------------------------------------------
// Build a chain using CertGetCertificateChain
if (!CertGetCertificateChain(hChainEngine, // use the default chain engine
pCert, // pointer to the end certificate
NULL, // use the default time
NULL, // search no additional stores
&ChainPara, // use AND logic and enhanced key usage
// as indicated in the ChainPara
// data structure
dwChainFlags,
NULL, // currently reserved
&pChainContext)) // return a pointer to the chain created
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto CleanUp;
}
//---------------------------------------------------------------
// Verify that the chain complies with policy
if (!CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_BASE, // use the base policy
pChainContext, // pointer to the chain
&ChainPolicy,
&PolicyStatus)) // return a pointer to the policy status
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto CleanUp;
}
if (PolicyStatus.dwError != S_OK)
{
wf_report_error("CertVerifyCertificateChainPolicy: Chain Status", PolicyStatus.dwError);
hr = PolicyStatus.dwError;
// Instruction: If the PolicyStatus.dwError is CRYPT_E_NO_REVOCATION_CHECK or
// CRYPT_E_REVOCATION_OFFLINE, it indicates errors in obtaining
// revocation information. These can be ignored since the retrieval of
// revocation information depends on network availability
if (PolicyStatus.dwError == CRYPT_E_NO_REVOCATION_CHECK ||
PolicyStatus.dwError == CRYPT_E_REVOCATION_OFFLINE)
{
hr = S_OK;
}
goto CleanUp;
}
WLog_INFO(TAG, "CertVerifyCertificateChainPolicy succeeded for %s (%s) issued by %s",
common_name, subject, issuer);
hr = S_OK;
CleanUp:
if (FAILED(hr))
{
WLog_INFO(TAG, "CertVerifyCertificateChainPolicy failed for %s (%s) issued by %s",
common_name, subject, issuer);
wf_report_error(NULL, hr);
}
free(derPubKey);
if (NULL != pChainContext)
{
CertFreeCertificateChain(pChainContext);
}
if (NULL != hChainEngine)
{
CertFreeCertificateChainEngine(hChainEngine);
}
if (NULL != pCert)
{
CertFreeCertificateContext(pCert);
}
return (DWORD)hr;
}
#endif
static DWORD wf_cli_verify_certificate_ex(freerdp* instance, const char* host, UINT16 port,
const char* common_name, const char* subject,
const char* issuer, const char* fingerprint, DWORD flags)
{
#ifdef WITH_WINDOWS_CERT_STORE
if (flags & VERIFY_CERT_FLAG_FP_IS_PEM && !(flags & VERIFY_CERT_FLAG_MISMATCH))
{
if (wf_is_x509_certificate_trusted(common_name, subject, issuer, fingerprint) == S_OK)
{
return 2;
}
}
#endif
return client_cli_verify_certificate_ex(instance, host, port, common_name, subject, issuer,
fingerprint, flags);
}
static DWORD wf_verify_certificate_ex(freerdp* instance, const char* host, UINT16 port,
const char* common_name, const char* subject,
const char* issuer, const char* fingerprint, DWORD flags)
{
WCHAR* buffer;
WCHAR* caption;
int what = IDCANCEL;
#ifdef WITH_WINDOWS_CERT_STORE
if (flags & VERIFY_CERT_FLAG_FP_IS_PEM && !(flags & VERIFY_CERT_FLAG_MISMATCH))
{
if (wf_is_x509_certificate_trusted(common_name, subject, issuer, fingerprint) == S_OK)
{
return 2;
}
}
#endif
buffer = wf_format_text(
L"Certificate details:\n"
L"\tCommonName: %S\n"
L"\tSubject: %S\n"
L"\tIssuer: %S\n"
L"\tThumbprint: %S\n"
L"\tHostMismatch: %S\n"
L"\n"
L"The above X.509 certificate could not be verified, possibly because you do not have "
L"the CA certificate in your certificate store, or the certificate has expired. "
L"Please look at the OpenSSL documentation on how to add a private CA to the store.\n"
L"\n"
L"YES\tAccept permanently\n"
L"NO\tAccept for this session only\n"
L"CANCEL\tAbort connection\n",
common_name, subject, issuer, fingerprint,
flags & VERIFY_CERT_FLAG_MISMATCH ? "Yes" : "No");
caption = wf_format_text(L"Verify certificate for %S:%hu", host, port);
WINPR_UNUSED(instance);
if (!buffer || !caption)
goto fail;
what = MessageBoxW(NULL, buffer, caption, MB_YESNOCANCEL);
fail:
free(buffer);
free(caption);
/* return 1 to accept and store a certificate, 2 to accept
* a certificate only for this session, 0 otherwise */
switch (what)
{
case IDYES:
return 1;
case IDNO:
return 2;
default:
return 0;
}
}
static DWORD wf_verify_changed_certificate_ex(freerdp* instance, const char* host, UINT16 port,
const char* common_name, const char* subject,
const char* issuer, const char* new_fingerprint,
const char* old_subject, const char* old_issuer,
const char* old_fingerprint, DWORD flags)
{
WCHAR* buffer;
WCHAR* caption;
int what = IDCANCEL;
buffer = wf_format_text(
L"New Certificate details:\n"
L"\tCommonName: %S\n"
L"\tSubject: %S\n"
L"\tIssuer: %S\n"
L"\tThumbprint: %S\n"
L"\tHostMismatch: %S\n"
L"\n"
L"Old Certificate details:\n"
L"\tSubject: %S\n"
L"\tIssuer: %S\n"
L"\tThumbprint: %S"
L"The above X.509 certificate could not be verified, possibly because you do not have "
L"the CA certificate in your certificate store, or the certificate has expired. "
L"Please look at the OpenSSL documentation on how to add a private CA to the store.\n"
L"\n"
L"YES\tAccept permanently\n"
L"NO\tAccept for this session only\n"
L"CANCEL\tAbort connection\n",
common_name, subject, issuer, new_fingerprint,
flags & VERIFY_CERT_FLAG_MISMATCH ? "Yes" : "No", old_subject, old_issuer, old_fingerprint);
caption = wf_format_text(L"Verify certificate change for %S:%hu", host, port);
WINPR_UNUSED(instance);
if (!buffer || !caption)
goto fail;
what = MessageBoxW(NULL, buffer, caption, MB_YESNOCANCEL);
fail:
free(buffer);
free(caption);
/* return 1 to accept and store a certificate, 2 to accept
* a certificate only for this session, 0 otherwise */
switch (what)
{
case IDYES:
return 1;
case IDNO:
return 2;
default:
return 0;
}
}
static BOOL wf_present_gateway_message(freerdp* instance, UINT32 type, BOOL isDisplayMandatory,
BOOL isConsentMandatory, size_t length, const WCHAR* message)
{
if (!isDisplayMandatory && !isConsentMandatory)
return TRUE;
/* special handling for consent messages (show modal dialog) */
if (type == GATEWAY_MESSAGE_CONSENT && isConsentMandatory)
{
int mbRes;
WCHAR* msg;
msg = wf_format_text(L"%.*s\n\nI understand and agree to the terms of this policy", length,
message);
mbRes = MessageBoxW(NULL, msg, L"Consent Message", MB_YESNO);
free(msg);
if (mbRes != IDYES)
return FALSE;
}
else
return client_cli_present_gateway_message(instance, type, isDisplayMandatory,
isConsentMandatory, length, message);
return TRUE;
}
static DWORD WINAPI wf_client_thread(LPVOID lpParam)
{
MSG msg = { 0 };
int width = 0;
int height = 0;
BOOL msg_ret = FALSE;
int quit_msg = 0;
DWORD error = 0;
freerdp* instance = (freerdp*)lpParam;
WINPR_ASSERT(instance);
if (!freerdp_connect(instance))
goto end;
rdpContext* context = instance->context;
WINPR_ASSERT(context);
wfContext* wfc = (wfContext*)instance->context;
WINPR_ASSERT(wfc);
rdpChannels* channels = context->channels;
WINPR_ASSERT(channels);
rdpSettings* settings = context->settings;
WINPR_ASSERT(settings);
while (1)
{
HANDLE handles[MAXIMUM_WAIT_OBJECTS] = { 0 };
DWORD nCount = 0;
if (freerdp_focus_required(instance))
{
wf_event_focus_in(wfc);
wf_event_focus_in(wfc);
}
{
DWORD tmp = freerdp_get_event_handles(context, &handles[nCount], 64 - nCount);
if (tmp == 0)
{
WLog_ERR(TAG, "freerdp_get_event_handles failed");
break;
}
nCount += tmp;
}
if (MsgWaitForMultipleObjects(nCount, handles, FALSE, 1000, QS_ALLINPUT) == WAIT_FAILED)
{
WLog_ERR(TAG, "wfreerdp_run: WaitForMultipleObjects failed: 0x%08lX", GetLastError());
break;
}
{
if (!freerdp_check_event_handles(context))
{
if (client_auto_reconnect(instance))
continue;
WLog_ERR(TAG, "Failed to check FreeRDP file descriptor");
break;
}
}
if (freerdp_shall_disconnect_context(instance->context))
break;
quit_msg = FALSE;
while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE))
{
msg_ret = GetMessage(&msg, NULL, 0, 0);
if (freerdp_settings_get_bool(settings, FreeRDP_EmbeddedWindow))
{
if ((msg.message == WM_SETFOCUS) && (msg.lParam == 1))
{
PostMessage(wfc->hwnd, WM_SETFOCUS, 0, 0);
}
else if ((msg.message == WM_KILLFOCUS) && (msg.lParam == 1))
{
PostMessage(wfc->hwnd, WM_KILLFOCUS, 0, 0);
}
}
switch (msg.message)
{
case WM_SIZE:
{
width = LOWORD(msg.lParam);
height = HIWORD(msg.lParam);
SetWindowPos(wfc->hwnd, HWND_TOP, 0, 0, width, height, SWP_FRAMECHANGED);
break;
}
case WM_FREERDP_SHOWWINDOW:
{
ShowWindow(wfc->hwnd, SW_NORMAL);
break;
}
default:
break;
}
if ((msg_ret == 0) || (msg_ret == -1))
{
quit_msg = TRUE;
break;
}
TranslateMessage(&msg);
DispatchMessage(&msg);
}
if (quit_msg)
break;
}
/* cleanup */
freerdp_disconnect(instance);
end:
error = freerdp_get_last_error(instance->context);
WLog_DBG(TAG, "Main thread exited with %" PRIu32, error);
ExitThread(error);
return error;
}
static DWORD WINAPI wf_keyboard_thread(LPVOID lpParam)
{
MSG msg;
BOOL status;
wfContext* wfc;
HHOOK hook_handle;
wfc = (wfContext*)lpParam;
WINPR_ASSERT(NULL != wfc);
hook_handle = SetWindowsHookEx(WH_KEYBOARD_LL, wf_ll_kbd_proc, wfc->hInstance, 0);
if (hook_handle)
{
while ((status = GetMessage(&msg, NULL, 0, 0)) != 0)
{
if (status == -1)
{
WLog_ERR(TAG, "keyboard thread error getting message");
break;
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
UnhookWindowsHookEx(hook_handle);
}
else
{
WLog_ERR(TAG, "failed to install keyboard hook");
}
WLog_DBG(TAG, "Keyboard thread exited.");
ExitThread(0);
return 0;
}
int freerdp_client_set_window_size(wfContext* wfc, int width, int height)
{
WLog_DBG(TAG, "freerdp_client_set_window_size %d, %d", width, height);
if ((width != wfc->client_width) || (height != wfc->client_height))
{
PostThreadMessage(wfc->mainThreadId, WM_SIZE, SIZE_RESTORED,
((UINT)height << 16) | (UINT)width);
}
return 0;
}
void wf_size_scrollbars(wfContext* wfc, UINT32 client_width, UINT32 client_height)
{
const rdpSettings* settings;
WINPR_ASSERT(wfc);
settings = wfc->common.context.settings;
WINPR_ASSERT(settings);
if (wfc->disablewindowtracking)
return;
// prevent infinite message loop
wfc->disablewindowtracking = TRUE;
if (freerdp_settings_get_bool(settings, FreeRDP_SmartSizing) ||
freerdp_settings_get_bool(settings, FreeRDP_DynamicResolutionUpdate))
{
wfc->xCurrentScroll = 0;
wfc->yCurrentScroll = 0;
if (wfc->xScrollVisible || wfc->yScrollVisible)
{
if (ShowScrollBar(wfc->hwnd, SB_BOTH, FALSE))
{
wfc->xScrollVisible = FALSE;
wfc->yScrollVisible = FALSE;
}
}
}
else
{
SCROLLINFO si;
BOOL horiz = wfc->xScrollVisible;
BOOL vert = wfc->yScrollVisible;
if (!horiz && client_width < freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth))
{
horiz = TRUE;
}
else if (horiz &&
client_width >=
freerdp_settings_get_uint32(
settings, FreeRDP_DesktopWidth) /* - GetSystemMetrics(SM_CXVSCROLL)*/)
{
horiz = FALSE;
}
if (!vert && client_height < freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight))
{
vert = TRUE;
}
else if (vert &&
client_height >=
freerdp_settings_get_uint32(
settings, FreeRDP_DesktopHeight) /* - GetSystemMetrics(SM_CYHSCROLL)*/)
{
vert = FALSE;
}
if (horiz == vert && (horiz != wfc->xScrollVisible && vert != wfc->yScrollVisible))
{
if (ShowScrollBar(wfc->hwnd, SB_BOTH, horiz))
{
wfc->xScrollVisible = horiz;
wfc->yScrollVisible = vert;
}
}
if (horiz != wfc->xScrollVisible)
{
if (ShowScrollBar(wfc->hwnd, SB_HORZ, horiz))
{
wfc->xScrollVisible = horiz;
}
}
if (vert != wfc->yScrollVisible)
{
if (ShowScrollBar(wfc->hwnd, SB_VERT, vert))
{
wfc->yScrollVisible = vert;
}
}
if (horiz)
{
// The horizontal scrolling range is defined by
// (bitmap_width) - (client_width). The current horizontal
// scroll value remains within the horizontal scrolling range.
wfc->xMaxScroll =
MAX(freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth) - client_width, 0);
wfc->xCurrentScroll = MIN(wfc->xCurrentScroll, wfc->xMaxScroll);
si.cbSize = sizeof(si);
si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
si.nMin = wfc->xMinScroll;
si.nMax = freerdp_settings_get_uint32(settings, FreeRDP_DesktopWidth);
si.nPage = client_width;
si.nPos = wfc->xCurrentScroll;
SetScrollInfo(wfc->hwnd, SB_HORZ, &si, TRUE);
}
if (vert)
{
// The vertical scrolling range is defined by
// (bitmap_height) - (client_height). The current vertical
// scroll value remains within the vertical scrolling range.
wfc->yMaxScroll = MAX(
freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight) - client_height, 0);
wfc->yCurrentScroll = MIN(wfc->yCurrentScroll, wfc->yMaxScroll);
si.cbSize = sizeof(si);
si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS;
si.nMin = wfc->yMinScroll;
si.nMax = freerdp_settings_get_uint32(settings, FreeRDP_DesktopHeight);
si.nPage = client_height;
si.nPos = wfc->yCurrentScroll;
SetScrollInfo(wfc->hwnd, SB_VERT, &si, TRUE);
}
}
wfc->disablewindowtracking = FALSE;
wf_update_canvas_diff(wfc);
}
static BOOL wfreerdp_client_global_init(void)
{
WSADATA wsaData;
WSAStartup(0x101, &wsaData);
freerdp_register_addin_provider(freerdp_channels_load_static_addin_entry, 0);
return TRUE;
}
static void wfreerdp_client_global_uninit(void)
{
WSACleanup();
}
static BOOL wfreerdp_client_new(freerdp* instance, rdpContext* context)
{
wfContext* wfc = (wfContext*)context;
if (!wfc)
return FALSE;
// AttachConsole and stdin do not work well.
// Use GUI input dialogs instead of command line ones.
wfc->isConsole = wf_has_console();
if (!(wfreerdp_client_global_init()))
return FALSE;
WINPR_ASSERT(instance);
instance->PreConnect = wf_pre_connect;
instance->PostConnect = wf_post_connect;
instance->PostDisconnect = wf_post_disconnect;
instance->AuthenticateEx = wf_authenticate_ex;
#ifdef WITH_WINDOWS_CERT_STORE
freerdp_settings_set_bool(context->settings, FreeRDP_CertificateCallbackPreferPEM, TRUE);
#endif
if (!wfc->isConsole)
{
instance->VerifyCertificateEx = wf_verify_certificate_ex;
instance->VerifyChangedCertificateEx = wf_verify_changed_certificate_ex;
instance->PresentGatewayMessage = wf_present_gateway_message;
}
#ifdef WITH_PROGRESS_BAR
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
CoCreateInstance(&CLSID_TaskbarList, NULL, CLSCTX_ALL, &IID_ITaskbarList3,
(void**)&wfc->taskBarList);
#endif
return TRUE;
}
static void wfreerdp_client_free(freerdp* instance, rdpContext* context)
{
WINPR_UNUSED(instance);
if (!context)
return;
#ifdef WITH_PROGRESS_BAR
CoUninitialize();
#endif
}
static int wfreerdp_client_start(rdpContext* context)
{
wfContext* wfc = (wfContext*)context;
WINPR_ASSERT(context);
WINPR_ASSERT(context->settings);
freerdp* instance = context->instance;
WINPR_ASSERT(instance);
rdpSettings* settings = context->settings;
WINPR_ASSERT(settings);
HINSTANCE hInstance = GetModuleHandle(NULL);
HWND hWndParent = (HWND)freerdp_settings_get_uint64(settings, FreeRDP_ParentWindowId);
if (!freerdp_settings_set_bool(settings, FreeRDP_EmbeddedWindow, (hWndParent) ? TRUE : FALSE))
return -1;
wfc->hWndParent = hWndParent;
if (freerdp_settings_get_bool(settings, FreeRDP_EmbeddedWindow))
{
typedef UINT(WINAPI * GetDpiForWindow_t)(HWND hwnd);
typedef BOOL(WINAPI * SetProcessDPIAware_t)(void);
HMODULE module = GetModuleHandle(_T("User32"));
if (module)
{
GetDpiForWindow_t pGetDpiForWindow =
(GetDpiForWindow_t)GetProcAddress(module, "GetDpiForWindow");
SetProcessDPIAware_t pSetProcessDPIAware =
(SetProcessDPIAware_t)GetProcAddress(module, "SetProcessDPIAware");
if (pGetDpiForWindow && pSetProcessDPIAware)
{
const UINT dpiAwareness = pGetDpiForWindow(hWndParent);
if (dpiAwareness != USER_DEFAULT_SCREEN_DPI)
pSetProcessDPIAware();
}
FreeLibrary(module);
}
}
/* initial windows system item position where we will insert new menu item
* after default 5 items (restore, move, size, minimize, maximize)
* gets incremented each time wf_append_item_to_system_menu is called
* or maybe could use GetMenuItemCount() to get initial item count ? */
wfc->systemMenuInsertPosition = 6;
wfc->hInstance = hInstance;
wfc->cursor = LoadCursor(NULL, IDC_ARROW);
wfc->icon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON1));
wfc->wndClassName = _tcsdup(_T("FreeRDP"));
wfc->wndClass.cbSize = sizeof(WNDCLASSEX);
wfc->wndClass.style = CS_HREDRAW | CS_VREDRAW;
wfc->wndClass.lpfnWndProc = wf_event_proc;
wfc->wndClass.cbClsExtra = 0;
wfc->wndClass.cbWndExtra = 0;
wfc->wndClass.hCursor = NULL;
wfc->wndClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wfc->wndClass.lpszMenuName = NULL;
wfc->wndClass.lpszClassName = wfc->wndClassName;
wfc->wndClass.hInstance = hInstance;
wfc->wndClass.hIcon = wfc->icon;
wfc->wndClass.hIconSm = wfc->icon;
RegisterClassEx(&(wfc->wndClass));
wfc->keyboardThread =
CreateThread(NULL, 0, wf_keyboard_thread, (void*)wfc, 0, &wfc->keyboardThreadId);
if (!wfc->keyboardThread)
return -1;
wfc->common.thread =
CreateThread(NULL, 0, wf_client_thread, (void*)instance, 0, &wfc->mainThreadId);
if (!wfc->common.thread)
return -1;
return 0;
}
static int wfreerdp_client_stop(rdpContext* context)
{
int rc;
wfContext* wfc = (wfContext*)context;
WINPR_ASSERT(wfc);
PostThreadMessage(wfc->mainThreadId, WM_QUIT, 0, 0);
rc = freerdp_client_common_stop(context);
wfc->mainThreadId = 0;
if (wfc->keyboardThread)
{
PostThreadMessage(wfc->keyboardThreadId, WM_QUIT, 0, 0);
WaitForSingleObject(wfc->keyboardThread, INFINITE);
CloseHandle(wfc->keyboardThread);
wfc->keyboardThread = NULL;
wfc->keyboardThreadId = 0;
}
return 0;
}
int RdpClientEntry(RDP_CLIENT_ENTRY_POINTS* pEntryPoints)
{
pEntryPoints->Version = 1;
pEntryPoints->Size = sizeof(RDP_CLIENT_ENTRY_POINTS_V1);
pEntryPoints->GlobalInit = wfreerdp_client_global_init;
pEntryPoints->GlobalUninit = wfreerdp_client_global_uninit;
pEntryPoints->ContextSize = sizeof(wfContext);
pEntryPoints->ClientNew = wfreerdp_client_new;
pEntryPoints->ClientFree = wfreerdp_client_free;
pEntryPoints->ClientStart = wfreerdp_client_start;
pEntryPoints->ClientStop = wfreerdp_client_stop;
return 0;
}
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