wine/dlls/appwiz.cpl/addons.c
2024-02-05 12:39:02 +01:00

773 lines
21 KiB
C

/*
* Copyright 2006-2010 Jacek Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "cpl.h"
#include "winreg.h"
#include "ole2.h"
#include "commctrl.h"
#include "advpub.h"
#include "wininet.h"
#include "pathcch.h"
#include "shellapi.h"
#include "urlmon.h"
#include "msi.h"
#include "bcrypt.h"
#include "appwiz.h"
#include "res.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(appwizcpl);
#define GECKO_VERSION "2.47.4"
#ifdef __i386__
#define GECKO_ARCH "x86"
#define GECKO_SHA "26cecc47706b091908f7f814bddb074c61beb8063318e9efc5a7f789857793d6"
#elif defined(__x86_64__)
#define GECKO_ARCH "x86_64"
#define GECKO_SHA "e590b7d988a32d6aa4cf1d8aa3aa3d33766fdd4cf4c89c2dcc2095ecb28d066f"
#else
#define GECKO_ARCH ""
#define GECKO_SHA "???"
#endif
#define MONO_VERSION "9.0.0"
#if defined(__i386__) || defined(__x86_64__)
#define MONO_ARCH "x86"
#define MONO_SHA "79f6c43100675566c112f4199b9ea7b944d338164b34bd91fa11b0b0a414e1c4"
#else
#define MONO_ARCH ""
#define MONO_SHA "???"
#endif
typedef struct {
const char *version;
const WCHAR *file_name;
const WCHAR *subdir_name;
const char *sha;
const char *url_default;
const char *config_key;
const char *url_config_key;
const char *dir_config_key;
LPCWSTR dialog_template;
} addon_info_t;
/* Download addon files over HTTP because Wine depends on an external library
* for TLS, so we can't be sure that HTTPS will work. The integrity of each file
* is checked with a hardcoded cryptographically secure hash. */
static const addon_info_t addons_info[] = {
{
GECKO_VERSION,
L"wine-gecko-" GECKO_VERSION "-" GECKO_ARCH ".msi",
L"gecko",
GECKO_SHA,
"http://source.winehq.org/winegecko.php",
"MSHTML", "GeckoUrl", "GeckoCabDir",
MAKEINTRESOURCEW(ID_DWL_GECKO_DIALOG)
},
{
MONO_VERSION,
L"wine-mono-" MONO_VERSION "-" MONO_ARCH ".msi",
L"mono",
MONO_SHA,
"http://source.winehq.org/winemono.php",
"Dotnet", "MonoUrl", "MonoCabDir",
MAKEINTRESOURCEW(ID_DWL_MONO_DIALOG)
}
};
static const addon_info_t *addon;
static HWND install_dialog = NULL;
static LPWSTR url = NULL;
static IBinding *dwl_binding;
static WCHAR *msi_file;
static const char * (CDECL *p_wine_get_version)(void);
static WCHAR * (CDECL *p_wine_get_dos_file_name)(const char*);
static BOOL sha_check(const WCHAR *file_name)
{
const unsigned char *file_map;
HANDLE file, map;
DWORD size, i;
UCHAR sha[32];
char buf[1024];
BOOL ret = FALSE;
file = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
if(file == INVALID_HANDLE_VALUE) {
WARN("Could not open file: %lu\n", GetLastError());
return FALSE;
}
size = GetFileSize(file, NULL);
map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
CloseHandle(file);
if(!map)
return FALSE;
file_map = MapViewOfFile(map, FILE_MAP_READ, 0, 0, 0);
CloseHandle(map);
if(!file_map)
return FALSE;
if(!BCryptHash(BCRYPT_SHA256_ALG_HANDLE, NULL, 0, (UCHAR *)file_map, size, sha, sizeof(sha))) {
for(i=0; i < sizeof(sha); i++)
sprintf(buf + i * 2, "%02x", sha[i]);
ret = !strcmp(buf, addon->sha);
if(!ret)
WARN("Got %s, expected %s\n", buf, addon->sha);
}
UnmapViewOfFile(file_map);
return ret;
}
static void set_status(DWORD id)
{
HWND status = GetDlgItem(install_dialog, ID_DWL_STATUS);
WCHAR buf[64];
LoadStringW(hInst, id, buf, ARRAY_SIZE(buf));
SendMessageW(status, WM_SETTEXT, 0, (LPARAM)buf);
}
enum install_res {
INSTALL_OK = 0,
INSTALL_FAILED,
INSTALL_NEXT,
};
static enum install_res install_file(const WCHAR *file_name)
{
ULONG res;
res = MsiInstallProductW(file_name, NULL);
if(res == ERROR_PRODUCT_VERSION)
res = MsiInstallProductW(file_name, L"REINSTALL=ALL REINSTALLMODE=vomus");
if(res != ERROR_SUCCESS) {
ERR("MsiInstallProduct failed: %lu\n", res);
return INSTALL_FAILED;
}
return INSTALL_OK;
}
static enum install_res install_from_dos_file(const WCHAR *dir, const WCHAR *subdir, const WCHAR *file_name)
{
WCHAR *path, *canonical_path;
enum install_res ret;
int len = lstrlenW( dir );
int size = len + 1;
HRESULT hr;
size += lstrlenW( subdir ) + lstrlenW( file_name ) + 2;
if (!(path = malloc( size * sizeof(WCHAR) ))) return INSTALL_FAILED;
lstrcpyW( path, dir );
if (!wcsncmp( path, L"\\??\\", 4 )) path[1] = '\\'; /* change \??\ into \\?\ */
if (len && path[len-1] != '/' && path[len-1] != '\\') path[len++] = '\\';
lstrcpyW( path + len, subdir );
lstrcatW( path, L"\\" );
lstrcatW( path, file_name );
hr = PathAllocCanonicalize( path, PATHCCH_ALLOW_LONG_PATHS, &canonical_path );
if (FAILED( hr ))
{
ERR( "Failed to canonicalize %s, hr %#lx\n", debugstr_w(path), hr );
free( path );
return INSTALL_NEXT;
}
free( path );
if (GetFileAttributesW( canonical_path ) == INVALID_FILE_ATTRIBUTES)
{
TRACE( "%s not found\n", debugstr_w(canonical_path) );
LocalFree( canonical_path );
return INSTALL_NEXT;
}
ret = install_file( canonical_path );
LocalFree( canonical_path );
return ret;
}
static enum install_res install_from_unix_file(const char *dir, const WCHAR *subdir, const WCHAR *file_name)
{
WCHAR *dos_dir;
enum install_res ret = INSTALL_NEXT;
if (p_wine_get_dos_file_name && (dos_dir = p_wine_get_dos_file_name( dir )))
{
ret = install_from_dos_file( dos_dir, subdir, file_name );
HeapFree( GetProcessHeap(), 0, dos_dir );
}
return ret;
}
static HKEY open_config_key(void)
{
HKEY hkey, ret;
DWORD res;
/* @@ Wine registry key: HKCU\Software\Wine\$config_key */
res = RegOpenKeyW(HKEY_CURRENT_USER, L"Software\\Wine", &hkey);
if(res != ERROR_SUCCESS)
return NULL;
res = RegOpenKeyA(hkey, addon->config_key, &ret);
RegCloseKey(hkey);
return res == ERROR_SUCCESS ? ret : NULL;
}
static enum install_res install_from_registered_dir(void)
{
char *package_dir, *new_package_dir;
HKEY hkey;
DWORD res, type, size = MAX_PATH;
enum install_res ret;
hkey = open_config_key();
if(!hkey)
return INSTALL_NEXT;
package_dir = malloc(size);
res = RegGetValueA(hkey, NULL, addon->dir_config_key, RRF_RT_ANY, &type, (PBYTE)package_dir, &size);
if(res == ERROR_MORE_DATA) {
new_package_dir = realloc(package_dir, size);
if(new_package_dir) {
package_dir = new_package_dir;
res = RegGetValueA(hkey, NULL, addon->dir_config_key, RRF_RT_ANY, &type, (PBYTE)package_dir, &size);
}
}
RegCloseKey(hkey);
if(res == ERROR_FILE_NOT_FOUND) {
free(package_dir);
return INSTALL_NEXT;
} else if(res != ERROR_SUCCESS || (type != REG_SZ && type != REG_EXPAND_SZ)) {
free(package_dir);
return INSTALL_FAILED;
}
ret = install_from_unix_file(package_dir, L"", addon->file_name);
free(package_dir);
return ret;
}
static enum install_res install_from_default_dir(void)
{
const WCHAR *package_dir;
WCHAR *dir_buf = NULL;
enum install_res ret = INSTALL_NEXT;
if ((package_dir = _wgetenv( L"WINEBUILDDIR" )))
{
dir_buf = malloc( wcslen(package_dir) * sizeof(WCHAR) + sizeof(L"\\..\\") );
lstrcpyW( dir_buf, package_dir );
lstrcatW( dir_buf, L"\\..\\" );
package_dir = dir_buf;
}
else package_dir = _wgetenv( L"WINEDATADIR" );
if (package_dir)
{
ret = install_from_dos_file(package_dir, addon->subdir_name, addon->file_name);
free(dir_buf);
}
if (ret == INSTALL_NEXT)
ret = install_from_unix_file(INSTALL_DATADIR "/wine/", addon->subdir_name, addon->file_name);
if (ret == INSTALL_NEXT && strcmp(INSTALL_DATADIR, "/usr/share") != 0)
ret = install_from_unix_file("/usr/share/wine/", addon->subdir_name, addon->file_name);
if (ret == INSTALL_NEXT)
ret = install_from_unix_file("/opt/wine/", addon->subdir_name, addon->file_name);
return ret;
}
static WCHAR *get_cache_file_name(BOOL ensure_exists)
{
const char *xdg_dir;
const WCHAR *home_dir;
WCHAR *cache_dir, *ret;
size_t len, size;
xdg_dir = getenv( "XDG_CACHE_HOME" );
if (xdg_dir && *xdg_dir && p_wine_get_dos_file_name)
{
if (!(cache_dir = p_wine_get_dos_file_name( xdg_dir ))) return NULL;
}
else if ((home_dir = _wgetenv( L"WINEHOMEDIR" )))
{
if (!(cache_dir = HeapAlloc( GetProcessHeap(), 0, wcslen(home_dir) * sizeof(WCHAR) + sizeof(L"\\.cache") ))) return NULL;
lstrcpyW( cache_dir, home_dir );
lstrcatW( cache_dir, L"\\.cache" );
cache_dir[1] = '\\'; /* change \??\ into \\?\ */
}
else return NULL;
if (ensure_exists && !CreateDirectoryW( cache_dir, NULL ) && GetLastError() != ERROR_ALREADY_EXISTS)
{
WARN( "%s does not exist and could not be created (%lu)\n", debugstr_w(cache_dir), GetLastError() );
HeapFree( GetProcessHeap(), 0, cache_dir );
return NULL;
}
size = lstrlenW( cache_dir ) + ARRAY_SIZE(L"\\wine") + lstrlenW( addon->file_name ) + 1;
if (!(ret = malloc( size * sizeof(WCHAR) )))
{
HeapFree( GetProcessHeap(), 0, cache_dir );
return NULL;
}
lstrcpyW( ret, cache_dir );
lstrcatW( ret, L"\\wine" );
HeapFree( GetProcessHeap(), 0, cache_dir );
if (ensure_exists && !CreateDirectoryW( ret, NULL ) && GetLastError() != ERROR_ALREADY_EXISTS)
{
WARN( "%s does not exist and could not be created (%lu)\n", debugstr_w(ret), GetLastError() );
free( ret );
return NULL;
}
len = lstrlenW( ret );
ret[len++] = '\\';
lstrcpyW( ret + len, addon->file_name );
TRACE( "got %s\n", debugstr_w(ret) );
return ret;
}
static enum install_res install_from_cache(void)
{
WCHAR *cache_file_name;
enum install_res res;
cache_file_name = get_cache_file_name(FALSE);
if(!cache_file_name)
return INSTALL_NEXT;
if(!sha_check(cache_file_name)) {
WARN("could not validate checksum\n");
DeleteFileW(cache_file_name);
free(cache_file_name);
return INSTALL_NEXT;
}
res = install_file(cache_file_name);
free(cache_file_name);
return res;
}
static IInternetBindInfo InstallCallbackBindInfo;
static HRESULT WINAPI InstallCallback_QueryInterface(IBindStatusCallback *iface,
REFIID riid, void **ppv)
{
if(IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IBindStatusCallback, riid)) {
*ppv = iface;
return S_OK;
}
if(IsEqualGUID(&IID_IInternetBindInfo, riid)) {
TRACE("IID_IInternetBindInfo\n");
*ppv = &InstallCallbackBindInfo;
return S_OK;
}
return E_INVALIDARG;
}
static ULONG WINAPI InstallCallback_AddRef(IBindStatusCallback *iface)
{
return 2;
}
static ULONG WINAPI InstallCallback_Release(IBindStatusCallback *iface)
{
return 1;
}
static HRESULT WINAPI InstallCallback_OnStartBinding(IBindStatusCallback *iface,
DWORD dwReserved, IBinding *pib)
{
set_status(IDS_DOWNLOADING);
IBinding_AddRef(pib);
dwl_binding = pib;
return S_OK;
}
static HRESULT WINAPI InstallCallback_GetPriority(IBindStatusCallback *iface,
LONG *pnPriority)
{
return E_NOTIMPL;
}
static HRESULT WINAPI InstallCallback_OnLowResource(IBindStatusCallback *iface,
DWORD dwReserved)
{
return E_NOTIMPL;
}
static HRESULT WINAPI InstallCallback_OnProgress(IBindStatusCallback *iface, ULONG ulProgress,
ULONG ulProgressMax, ULONG ulStatusCode, LPCWSTR szStatusText)
{
HWND progress = GetDlgItem(install_dialog, ID_DWL_PROGRESS);
if(ulProgressMax)
SendMessageW(progress, PBM_SETRANGE32, 0, ulProgressMax);
if(ulProgress)
SendMessageW(progress, PBM_SETPOS, ulProgress, 0);
return S_OK;
}
static HRESULT WINAPI InstallCallback_OnStopBinding(IBindStatusCallback *iface,
HRESULT hresult, LPCWSTR szError)
{
if(dwl_binding) {
IBinding_Release(dwl_binding);
dwl_binding = NULL;
}
if(FAILED(hresult)) {
if(hresult == E_ABORT)
TRACE("Binding aborted\n");
else
ERR("Binding failed %08lx\n", hresult);
return S_OK;
}
if(!msi_file) {
ERR("No MSI file\n");
return E_FAIL;
}
set_status(IDS_INSTALLING);
EnableWindow(GetDlgItem(install_dialog, IDCANCEL), 0);
if(sha_check(msi_file)) {
WCHAR *cache_file_name;
install_file(msi_file);
cache_file_name = get_cache_file_name(TRUE);
if(cache_file_name) {
CopyFileW(msi_file, cache_file_name, FALSE);
free(cache_file_name);
}
}else {
WCHAR message[256];
if(LoadStringW(hInst, IDS_INVALID_SHA, message, ARRAY_SIZE(message)))
MessageBoxW(NULL, message, NULL, MB_ICONERROR);
}
DeleteFileW(msi_file);
free(msi_file);
msi_file = NULL;
EndDialog(install_dialog, 0);
return S_OK;
}
static HRESULT WINAPI InstallCallback_GetBindInfo(IBindStatusCallback *iface,
DWORD* grfBINDF, BINDINFO* pbindinfo)
{
TRACE("()\n");
*grfBINDF = BINDF_ASYNCHRONOUS;
return S_OK;
}
static HRESULT WINAPI InstallCallback_OnDataAvailable(IBindStatusCallback *iface, DWORD grfBSCF,
DWORD dwSize, FORMATETC* pformatetc, STGMEDIUM* pstgmed)
{
if(!msi_file) {
msi_file = wcsdup(pstgmed->lpszFileName);
TRACE("got file name %s\n", debugstr_w(msi_file));
}
return S_OK;
}
static HRESULT WINAPI InstallCallback_OnObjectAvailable(IBindStatusCallback *iface,
REFIID riid, IUnknown* punk)
{
ERR("\n");
return E_NOTIMPL;
}
static const IBindStatusCallbackVtbl InstallCallbackVtbl = {
InstallCallback_QueryInterface,
InstallCallback_AddRef,
InstallCallback_Release,
InstallCallback_OnStartBinding,
InstallCallback_GetPriority,
InstallCallback_OnLowResource,
InstallCallback_OnProgress,
InstallCallback_OnStopBinding,
InstallCallback_GetBindInfo,
InstallCallback_OnDataAvailable,
InstallCallback_OnObjectAvailable
};
static IBindStatusCallback InstallCallback = { &InstallCallbackVtbl };
static HRESULT WINAPI InstallCallbackBindInfo_QueryInterface(IInternetBindInfo *iface, REFIID riid, void **ppv)
{
return IBindStatusCallback_QueryInterface(&InstallCallback, riid, ppv);
}
static ULONG WINAPI InstallCallbackBindInfo_AddRef(IInternetBindInfo *iface)
{
return 2;
}
static ULONG WINAPI InstallCallbackBindInfo_Release(IInternetBindInfo *iface)
{
return 1;
}
static HRESULT WINAPI InstallCallbackBindInfo_GetBindInfo(IInternetBindInfo *iface, DWORD *bindf, BINDINFO *bindinfo)
{
ERR("\n");
return E_NOTIMPL;
}
static HRESULT WINAPI InstallCallbackBindInfo_GetBindString(IInternetBindInfo *iface, ULONG string_type,
WCHAR **strs, ULONG cnt, ULONG *fetched)
{
switch(string_type) {
case BINDSTRING_USER_AGENT:
TRACE("BINDSTRING_USER_AGENT\n");
*strs = CoTaskMemAlloc(sizeof(L"Wine Addon Downloader"));
if(!*strs)
return E_OUTOFMEMORY;
lstrcpyW(*strs, L"Wine Addon Downloader");
*fetched = 1;
return S_OK;
}
return E_NOTIMPL;
}
static const IInternetBindInfoVtbl InstallCallbackBindInfoVtbl = {
InstallCallbackBindInfo_QueryInterface,
InstallCallbackBindInfo_AddRef,
InstallCallbackBindInfo_Release,
InstallCallbackBindInfo_GetBindInfo,
InstallCallbackBindInfo_GetBindString
};
static IInternetBindInfo InstallCallbackBindInfo = { &InstallCallbackBindInfoVtbl };
static void append_url_params( WCHAR *url )
{
DWORD size = INTERNET_MAX_URL_LENGTH * sizeof(WCHAR);
DWORD len = lstrlenW(url);
lstrcpyW(url+len, L"?arch=");
len += lstrlenW(L"?arch=");
len += MultiByteToWideChar(CP_ACP, 0, GECKO_ARCH, sizeof(GECKO_ARCH),
url+len, size/sizeof(WCHAR)-len)-1;
lstrcpyW(url+len, L"&v=");
len += lstrlenW(L"&v=");
len += MultiByteToWideChar(CP_ACP, 0, addon->version, -1, url+len, size/sizeof(WCHAR)-len)-1;
lstrcpyW(url+len, L"&winev=");
len += lstrlenW(L"&winev=");
MultiByteToWideChar(CP_ACP, 0, p_wine_get_version() ? p_wine_get_version() : 0, -1, url+len, size/sizeof(WCHAR)-len);
}
static LPWSTR get_url(void)
{
DWORD size = INTERNET_MAX_URL_LENGTH*sizeof(WCHAR);
WCHAR *url, *config_key;
HKEY hkey;
DWORD res, type;
DWORD returned_size;
static const WCHAR httpW[] = {'h','t','t','p'};
url = malloc(size);
returned_size = size;
hkey = open_config_key();
if (hkey)
{
config_key = strdupAtoW(addon->url_config_key);
res = RegQueryValueExW(hkey, config_key, NULL, &type, (LPBYTE)url, &returned_size);
free(config_key);
RegCloseKey(hkey);
if(res == ERROR_SUCCESS && type == REG_SZ) goto found;
}
MultiByteToWideChar( CP_ACP, 0, addon->url_default, -1, url, size / sizeof(WCHAR) );
found:
if (returned_size > sizeof(httpW) && !memcmp(url, httpW, sizeof(httpW))) append_url_params( url );
TRACE("Got URL %s\n", debugstr_w(url));
return url;
}
static BOOL start_download(void)
{
IBindCtx *bind_ctx;
IMoniker *mon;
IUnknown *tmp;
HRESULT hres;
hres = CreateURLMoniker(NULL, url, &mon);
if(FAILED(hres))
return FALSE;
hres = CreateAsyncBindCtx(0, &InstallCallback, NULL, &bind_ctx);
if(SUCCEEDED(hres)) {
hres = IMoniker_BindToStorage(mon, bind_ctx, NULL, &IID_IUnknown, (void**)&tmp);
IBindCtx_Release(bind_ctx);
}
IMoniker_Release(mon);
if(FAILED(hres))
return FALSE;
if(tmp)
IUnknown_Release(tmp);
return TRUE;
}
static void run_winebrowser(const WCHAR *url)
{
PROCESS_INFORMATION pi;
STARTUPINFOW si;
WCHAR app[MAX_PATH];
LONG len, url_len;
WCHAR *args;
BOOL ret;
url_len = lstrlenW(url);
len = GetSystemDirectoryW(app, MAX_PATH - ARRAY_SIZE(L"\\winebrowser.exe"));
lstrcpyW(app+len, L"\\winebrowser.exe");
len += ARRAY_SIZE(L"\\winebrowser.exe") - 1;
args = malloc((len + 1 + url_len) * sizeof(WCHAR));
if(!args)
return;
memcpy(args, app, len*sizeof(WCHAR));
args[len++] = ' ';
memcpy(args+len, url, (url_len+1) * sizeof(WCHAR));
TRACE("starting %s\n", debugstr_w(args));
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
ret = CreateProcessW(app, args, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi);
free(args);
if (ret) {
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
}
}
static INT_PTR CALLBACK installer_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg) {
case WM_INITDIALOG:
ShowWindow(GetDlgItem(hwnd, ID_DWL_PROGRESS), SW_HIDE);
install_dialog = hwnd;
return TRUE;
case WM_NOTIFY:
switch (((NMHDR *)lParam)->code)
{
case NM_CLICK:
case NM_RETURN:
if (wParam == ID_DWL_STATUS)
run_winebrowser(((NMLINK*)lParam)->item.szUrl);
break;
}
break;
case WM_COMMAND:
switch(wParam) {
case IDCANCEL:
if(dwl_binding)
IBinding_Abort(dwl_binding);
EndDialog(hwnd, 0);
return FALSE;
case ID_DWL_INSTALL:
ShowWindow(GetDlgItem(hwnd, ID_DWL_PROGRESS), SW_SHOW);
EnableWindow(GetDlgItem(hwnd, ID_DWL_INSTALL), 0);
if(!start_download())
EndDialog(install_dialog, 0);
}
}
return FALSE;
}
BOOL install_addon(addon_t addon_type)
{
if(!*GECKO_ARCH)
return FALSE;
addon = addons_info+addon_type;
p_wine_get_dos_file_name = (void *)GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "wine_get_dos_file_name");
p_wine_get_version = (void *)GetProcAddress(GetModuleHandleW(L"ntdll.dll"), "wine_get_version");
/*
* Try to find addon .msi file in following order:
* - directory stored in $dir_config_key value of HKCU/Software/Wine/$config_key key
* - $datadir/$addon_subdir/
* - $INSTALL_DATADIR/wine/$addon_subdir/
* - /usr/share/wine/$addon_subdir/
* - /opt/wine/$addon_subdir/
* - download from URL stored in $url_config_key value of HKCU/Software/Wine/$config_key key
*/
if (install_from_registered_dir() == INSTALL_NEXT
&& install_from_default_dir() == INSTALL_NEXT
&& install_from_cache() == INSTALL_NEXT
&& (url = get_url()))
DialogBoxW(hInst, addon->dialog_template, 0, installer_proc);
free(url);
url = NULL;
return TRUE;
}