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-rw-r--r--sql/winservice.c330
1 files changed, 330 insertions, 0 deletions
diff --git a/sql/winservice.c b/sql/winservice.c
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+++ b/sql/winservice.c
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+/*
+ Copyright (c) 2011, 2020, MariaDB Corporation.
+
+ 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 Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/*
+ 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>
+#include <shellapi.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);
+}
+
+/*
+ Exclusion rules.
+
+ Some hardware manufacturers deliver systems with own preinstalled MySQL copy
+ and services. We do not want to mess up with these installations. We will
+ just ignore such services, pretending it is not MySQL.
+
+ We also exclude MySQL5.7+ since we cannot upgrade it (and it is not an upgrade anyway)
+
+ @return
+ TRUE, if this service should be excluded from UI lists etc
+ FALSE otherwise.
+*/
+BOOL exclude_service(mysqld_service_properties *props)
+{
+ static const char* exclude_patterns[] =
+ {
+ "common files\\dell\\mysql\\bin\\", /* Dell's private installation */
+ NULL
+ };
+ int i;
+ char buf[MAX_PATH];
+
+ /* Convert mysqld path to lower case, rules for paths are case-insensitive. */
+ memcpy(buf, props->mysqld_exe, sizeof(props->mysqld_exe));
+ _strlwr(buf);
+
+ for(i= 0; exclude_patterns[i]; i++)
+ {
+ if (strstr(buf, exclude_patterns[i]))
+ return TRUE;
+ }
+ if ((props->version_major == 0) ||
+ (props->version_major > 5 && props->version_major < 10) ||
+ (props->version_major == 5 && props->version_minor > 7))
+ {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+
+static void get_datadir_from_ini(const char *ini, char *service_name, char *datadir, size_t sz)
+{
+ *datadir= 0;
+ const char *sections[]= {service_name, "mysqld", "server", "mariadb",
+ "mariadbd"};
+ for (int i= 0; i < sizeof(sections) / sizeof(sections[0]); i++)
+ {
+ if (sections[i])
+ {
+ GetPrivateProfileStringA(sections[i], "datadir", NULL, datadir,
+ (DWORD) sz, ini);
+ if (*datadir)
+ return;
+ }
+ }
+}
+
+
+/*
+ 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;
+ BOOL have_inifile;
+ char service_name[MAX_PATH];
+
+ 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 == 2)
+ {
+ /*
+ There are rare cases where service config does not have
+ --defaults-file in the binary path . There services were
+ registered with plain mysqld --install, the data directory is
+ next to "bin" in this case.
+ */
+ have_inifile= FALSE;
+ }
+ else if(numargs == 3)
+ {
+ have_inifile= TRUE;
+ }
+ else
+ {
+ goto end;
+ }
+
+ /* Last parameter is the service name*/
+ wcstombs(service_name, args[numargs-1], MAX_PATH);
+
+ if(have_inifile && 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-debug.exe") != 0 &&
+ wcsicmp(file_part, L"mysqld-nt.exe") != 0)
+ {
+ /* The service executable is not mysqld. */
+ goto end;
+ }
+
+ wcstombs(props->mysqld_exe, mysqld_path, MAX_PATH);
+ /* 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);
+ }
+
+ if (have_inifile)
+ {
+ /* We have --defaults-file in service definition. */
+ wcstombs(props->inifile, args[1]+16, MAX_PATH);
+ normalize_path(props->inifile, MAX_PATH);
+ if (GetFileAttributes(props->inifile) != INVALID_FILE_ATTRIBUTES)
+ {
+ get_datadir_from_ini(props->inifile, service_name, props->datadir,
+ sizeof(props->datadir));
+ }
+ else
+ {
+ /*
+ Service will start even with invalid .ini file, using lookup for
+ datadir relative to mysqld.exe. This is equivalent to the case no ini
+ file used.
+ */
+ props->inifile[0]= 0;
+ have_inifile= FALSE;
+ }
+ }
+
+ if(!have_inifile || props->datadir[0] == 0)
+ {
+ /*
+ Hard, although a rare case, we're guessing datadir and defaults-file.
+ On Windows, defaults-file is traditionally install-root\my.ini
+ and datadir is install-root\data
+ */
+ char install_root[MAX_PATH];
+ int i;
+ char *p;
+
+ /*
+ Get the install root(parent of bin directory where mysqld.exe)
+ is located.
+ */
+ strcpy_s(install_root, MAX_PATH, props->mysqld_exe);
+ for (i=0; i< 2; i++)
+ {
+ p= strrchr(install_root, '\\');
+ if(!p)
+ goto end;
+ *p= 0;
+ }
+
+ if (!have_inifile)
+ {
+ /* Look for my.ini, my.cnf in the install root */
+ sprintf_s(props->inifile, MAX_PATH, "%s\\my.ini", install_root);
+ if (GetFileAttributes(props->inifile) == INVALID_FILE_ATTRIBUTES)
+ {
+ sprintf_s(props->inifile, MAX_PATH, "%s\\my.cnf", install_root);
+ }
+ if (GetFileAttributes(props->inifile) != INVALID_FILE_ATTRIBUTES)
+ {
+ /* Ini file found, get datadir from there */
+ get_datadir_from_ini(props->inifile, service_name, props->datadir,
+ sizeof(props->datadir));
+ }
+ else
+ {
+ /* No ini file */
+ props->inifile[0]= 0;
+ }
+ }
+
+ /* Try datadir in install directory.*/
+ if (props->datadir[0] == 0)
+ {
+ sprintf_s(props->datadir, MAX_PATH, "%s\\data", install_root);
+ }
+ }
+
+ 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;
+ }
+ }
+ }
+ }
+
+ if (!exclude_service(props))
+ retval = 0;
+end:
+ LocalFree((HLOCAL)args);
+ return retval;
+}
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