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/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <winreg.h>
#include <msi.h>
#include <msiquery.h>
#include <wcautil.h>
#include <string.h>
#include <strsafe.h>
/*
* Search the registry for a service whose ImagePath starts
* with our install directory. Stop and remove it if requested.
*/
static TCHAR last_service_name[128];
int remove_service(TCHAR *installdir, int check_only) {
HKEY hKey;
int done = 0;
if(wcslen(installdir) < 3) {
WcaLog(LOGMSG_STANDARD, "INSTALLDIR is suspiciously short, better not do anything.");
return 0;
}
if(check_only == 0) {
WcaLog(LOGMSG_STANDARD, "Determining number of matching services...");
int servicecount = remove_service(installdir, 1);
if(servicecount <= 0) {
WcaLog(LOGMSG_STANDARD, "No services found, not removing anything.");
return 0;
} else if(servicecount == 1) {
TCHAR buf[256];
swprintf_s(buf, sizeof(buf), TEXT("There is a service called '%ls' set up to run from this installation. Do you wish me to stop and remove that service?"), last_service_name);
int rc = MessageBox(NULL, buf, TEXT("Removing MySQL Server"), MB_ICONQUESTION|MB_YESNOCANCEL|MB_SYSTEMMODAL);
if(rc == IDCANCEL) return -1;
if(rc != IDYES) return 0;
} else if(servicecount > 0) {
TCHAR buf[256];
swprintf_s(buf, sizeof(buf), TEXT("There appear to be %d services set up to run from this installation. Do you wish me to stop and remove those services?"), servicecount);
int rc = MessageBox(NULL, buf, TEXT("Removing MySQL Server"), MB_ICONQUESTION|MB_YESNOCANCEL|MB_SYSTEMMODAL);
if(rc == IDCANCEL) return -1;
if(rc != IDYES) return 0;
}
}
if(check_only == -1) check_only = 0;
WcaLog(LOGMSG_STANDARD, "Looking for service...");
WcaLog(LOGMSG_STANDARD, "INSTALLDIR = %ls", installdir);
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\services"), 0, KEY_READ, &hKey)==ERROR_SUCCESS) {
DWORD index = 0;
TCHAR keyname[1024];
DWORD keylen = sizeof(keyname);
FILETIME t;
/* Go through all services in the registry */
while(RegEnumKeyExW(hKey, index, keyname, &keylen, NULL, NULL, NULL, &t) == ERROR_SUCCESS) {
HKEY hServiceKey = 0;
TCHAR path[1024];
DWORD pathlen = sizeof(path)-1;
if (RegOpenKeyExW(hKey, keyname, NULL, KEY_READ, &hServiceKey) == ERROR_SUCCESS) {
/* Look at the ImagePath value of each service */
if (RegQueryValueExW(hServiceKey, TEXT("ImagePath"), NULL, NULL, (LPBYTE)path, &pathlen) == ERROR_SUCCESS) {
path[pathlen] = 0;
TCHAR *p = path;
if(p[0] == '"') p += 1;
/* See if it is similar to our install directory */
if(wcsncmp(p, installdir, wcslen(installdir)) == 0) {
WcaLog(LOGMSG_STANDARD, "Found service '%ls' with ImagePath '%ls'.", keyname, path);
swprintf_s(last_service_name, sizeof(last_service_name), TEXT("%ls"), keyname);
/* If we are supposed to stop and remove the service... */
if(!check_only) {
WcaLog(LOGMSG_STANDARD, "Trying to stop the service.");
SC_HANDLE hSCM = NULL;
hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
if(hSCM != NULL) {
SC_HANDLE hService = NULL;
hService = OpenService(hSCM, keyname, SERVICE_STOP|SERVICE_QUERY_STATUS|DELETE);
if(hService != NULL) {
WcaLog(LOGMSG_STANDARD, "Waiting for the service to stop...");
SERVICE_STATUS status;
/* Attempt to stop the service */
if(ControlService(hService, SERVICE_CONTROL_STOP, &status)) {
/* Now wait until it's stopped */
while("it's one big, mean and cruel world out there") {
if(!QueryServiceStatus(hService, &status)) break;
if(status.dwCurrentState == SERVICE_STOPPED) break;
Sleep(1000);
}
WcaLog(LOGMSG_STANDARD, "Stopped the service.");
}
/* Mark the service for deletion */
DeleteService(hService);
CloseServiceHandle(hService);
}
CloseServiceHandle(hSCM);
}
}
done++;
}
}
RegCloseKey(hServiceKey);
}
index++;
keylen = sizeof(keyname)-1;
}
RegCloseKey(hKey);
} else {
WcaLog(LOGMSG_STANDARD, "Can't seem to go through the list of installed services in the registry.");
}
return done;
}
UINT wrap(MSIHANDLE hInstall, char *name, int check_only) {
HRESULT hr = S_OK;
UINT er = ERROR_SUCCESS;
hr = WcaInitialize(hInstall, name);
ExitOnFailure(hr, "Failed to initialize");
WcaLog(LOGMSG_STANDARD, "Initialized.");
TCHAR INSTALLDIR[1024];
DWORD INSTALLDIR_size = sizeof(INSTALLDIR);
if(MsiGetPropertyW(hInstall, TEXT("CustomActionData"), INSTALLDIR, &INSTALLDIR_size) == ERROR_SUCCESS) {
int rc = remove_service(INSTALLDIR, check_only);
if(rc < 0) {
er = ERROR_CANCELLED;
}
} else {
er = ERROR_CANT_ACCESS_FILE;
}
LExit:
return WcaFinalize(er);
}
UINT __stdcall RemoveServiceNoninteractive(MSIHANDLE hInstall)
{
return wrap(hInstall, "RemoveServiceNoninteractive", -1);
}
UINT __stdcall RemoveService(MSIHANDLE hInstall)
{
return wrap(hInstall, "RemoveService", 0);
}
UINT __stdcall TestService(MSIHANDLE hInstall)
{
return wrap(hInstall, "TestService", 1);
}
/* DllMain - Initialize and cleanup WiX custom action utils */
extern "C" BOOL WINAPI DllMain(
__in HINSTANCE hInst,
__in ULONG ulReason,
__in LPVOID
)
{
switch(ulReason)
{
case DLL_PROCESS_ATTACH:
WcaGlobalInitialize(hInst);
break;
case DLL_PROCESS_DETACH:
WcaGlobalFinalize();
break;
}
return TRUE;
}
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