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/*
Get Properties of an existing mysqld Windows service
*/
#include <windows.h>
#include <winsvc.h>
#include "winservice.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
/*
Get version from an executable file
*/
void get_file_version(const char *path, int *major, int *minor, int *patch)
{
DWORD version_handle;
char *ver= 0;
VS_FIXEDFILEINFO info;
UINT len;
DWORD size;
void *p;
*major= *minor= *patch= 0;
size= GetFileVersionInfoSize(path, &version_handle);
if (size == 0)
return;
ver= (char *)malloc(size);
if(!GetFileVersionInfo(path, version_handle, size, ver))
goto end;
if(!VerQueryValue(ver,"\\",&p,&len))
goto end;
memcpy(&info,p ,sizeof(VS_FIXEDFILEINFO));
*major= (info.dwFileVersionMS & 0xFFFF0000) >> 16;
*minor= (info.dwFileVersionMS & 0x0000FFFF);
*patch= (info.dwFileVersionLS & 0xFFFF0000) >> 16;
end:
free(ver);
}
void normalize_path(char *path, size_t size)
{
char buf[MAX_PATH];
if (*path== '"')
{
char *p;
strcpy_s(buf, MAX_PATH, path+1);
p= strchr(buf, '"');
if (p)
*p=0;
}
else
strcpy_s(buf, MAX_PATH, path);
GetFullPathName(buf, MAX_PATH, buf, NULL);
strcpy_s(path, size, buf);
}
/*
Retrieve some properties from windows mysqld service binary path.
We're interested in ini file location and datadir, and also in version of
the data. We tolerate missing mysqld.exe.
Note that this function carefully avoids using mysql libraries (e.g dbug),
since it is used in unusual environments (windows installer, MFC), where we
do not have much control over how threads are created and destroyed, so we
cannot assume MySQL thread initilization here.
*/
int get_mysql_service_properties(const wchar_t *bin_path,
mysqld_service_properties *props)
{
int numargs;
wchar_t mysqld_path[MAX_PATH + 4];
wchar_t *file_part;
wchar_t **args= NULL;
int retval= 1;
props->datadir[0]= 0;
props->inifile[0]= 0;
props->mysqld_exe[0]= 0;
props->version_major= 0;
props->version_minor= 0;
props->version_patch= 0;
args= CommandLineToArgvW(bin_path, &numargs);
if(numargs != 3)
goto end;
if(wcsncmp(args[1], L"--defaults-file=", 16) != 0)
goto end;
GetFullPathNameW(args[0], MAX_PATH, mysqld_path, &file_part);
if(wcsstr(mysqld_path, L".exe") == NULL)
wcscat(mysqld_path, L".exe");
if(wcsicmp(file_part, L"mysqld.exe") != 0 &&
wcsicmp(file_part, L"mysqld.exe") != 0 &&
wcsicmp(file_part, L"mysqld-nt.exe") != 0)
{
/* The service executable is not mysqld. */
goto end;
}
wcstombs(props->mysqld_exe, args[0], MAX_PATH);
wcstombs(props->inifile, args[1]+16, MAX_PATH);
normalize_path(props->inifile, MAX_PATH);
if (GetFileAttributes(props->inifile) == INVALID_FILE_ATTRIBUTES)
goto end;
/* If mysqld.exe exists, try to get its version from executable */
if (GetFileAttributes(props->mysqld_exe) != INVALID_FILE_ATTRIBUTES)
{
get_file_version(props->mysqld_exe, &props->version_major,
&props->version_minor, &props->version_patch);
}
GetPrivateProfileString("mysqld", "datadir", NULL, props->datadir, MAX_PATH,
props->inifile);
if (props->datadir[0])
{
normalize_path(props->datadir, MAX_PATH);
/* Check if datadir really exists */
if (GetFileAttributes(props->datadir) == INVALID_FILE_ATTRIBUTES)
goto end;
}
else
{
/* There is no datadir in ini file, bail out.*/
goto end;
}
/*
If version could not be determined so far, try mysql_upgrade_info in
database directory.
*/
if(props->version_major == 0)
{
char buf[MAX_PATH];
FILE *mysql_upgrade_info;
sprintf_s(buf, MAX_PATH, "%s\\mysql_upgrade_info", props->datadir);
mysql_upgrade_info= fopen(buf, "r");
if(mysql_upgrade_info)
{
if (fgets(buf, MAX_PATH, mysql_upgrade_info))
{
int major,minor,patch;
if (sscanf(buf, "%d.%d.%d", &major, &minor, &patch) == 3)
{
props->version_major= major;
props->version_minor= minor;
props->version_patch= patch;
}
}
}
}
retval = 0;
end:
LocalFree((HLOCAL)args);
return retval;
}
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