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/* Copyright (c) 2009, 2019, MariaDB
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 02111-1301 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef _WIN32
#include <windows.h>
#define dlsym(lib, name) GetProcAddress((HMODULE)lib, name)
#define dlopen(libname, unused) LoadLibraryEx(libname, NULL, 0)
#define dlclose(lib) FreeLibrary((HMODULE)lib)
#elif defined(HAVE_DLFCN_H)
#include <dlfcn.h>
#else
#define NO_DLL
#endif
#ifndef NO_DLL
#include "../../../../wsrep/wsrep_api.h"
/**************************************************************************
* Library loader
**************************************************************************/
static int wsrep_check_iface_version(const char *found, const char *iface_ver)
{
if (strcmp(found, iface_ver)) {
return ERANGE;
}
return 0;
}
typedef int (*wsrep_loader_fun)(wsrep_t*);
static wsrep_loader_fun wsrep_dlf(void *dlh, const char *sym)
{
union {
wsrep_loader_fun dlfun;
void *obj;
} alias;
alias.obj = dlsym(dlh, sym);
return alias.dlfun;
}
static int wsrep_check_version_symbol(void *dlh)
{
char** dlversion = NULL;
dlversion = (char**) dlsym(dlh, "wsrep_interface_version");
if (dlversion == NULL)
return EINVAL;
return wsrep_check_iface_version(*dlversion, WSREP_INTERFACE_VERSION);
}
static int wsrep_print_version(void *dlh)
{
char** dlversion = NULL;
dlversion = (char**) dlsym(dlh, "wsrep_interface_version");
if (dlversion == NULL)
return EINVAL;
printf("found: %s, need: %s\n", *dlversion, WSREP_INTERFACE_VERSION);
return 0;
}
int main(int argc, char **argv)
{
int rc = EINVAL;
void *dlh;
wsrep_loader_fun dlfun;
if (!(dlh = dlopen(getenv("WSREP_PROVIDER"), RTLD_NOW | RTLD_LOCAL))) {
goto err;
}
if (!(dlfun = wsrep_dlf(dlh, "wsrep_loader"))) {
goto err;
}
if (argc < 2 || strcmp(argv[1], "-p")) {
rc = wsrep_check_version_symbol(dlh);
}
else {
rc = wsrep_print_version(dlh);
}
err:
if (dlh) dlclose(dlh);
if (rc == 0)
return 0;
else if (rc == ERANGE)
return 2;
else
return 1;
}
#else
int main(void)
{
return 1;
}
#endif
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