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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* 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, see
* <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#ifdef WITH_NSS
# include "virmock.h"
# include <sys/types.h>
# include <dirent.h>
# include <sys/stat.h>
# include <fcntl.h>
# include <unistd.h>
# include "configmake.h"
static int (*real_open)(const char *path, int flags, ...);
# if WITH___OPEN_2
static int (*real___open_2)(const char *path, int flags);
# endif
static DIR * (*real_opendir)(const char *name);
static int (*real_access)(const char *path, int mode);
# define LEASEDIR LOCALSTATEDIR "/lib/libvirt/dnsmasq/"
/*
* Functions to load the symbols and init the environment
*/
static void
init_syms(void)
{
if (real_open)
return;
# if defined(__GLIBC__) && defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64
VIR_MOCK_REAL_INIT_ALIASED(open, "open64");
# else
VIR_MOCK_REAL_INIT(open);
# endif
# if WITH___OPEN_2
VIR_MOCK_REAL_INIT(__open_2);
# endif
VIR_MOCK_REAL_INIT(opendir);
VIR_MOCK_REAL_INIT(access);
}
static int
getrealpath(char **newpath,
const char *path)
{
if (STRPREFIX(path, LEASEDIR)) {
*newpath = g_strdup_printf("%s/nssdata/%s",
abs_srcdir,
path + strlen(LEASEDIR));
} else {
*newpath = g_strdup(path);
}
return 0;
}
int
open(const char *path, int flags, ...)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
if (flags & O_CREAT) {
va_list ap;
mode_t mode;
va_start(ap, flags);
mode = (mode_t) va_arg(ap, int);
va_end(ap);
ret = real_open(newpath ? newpath : path, flags, mode);
} else {
ret = real_open(newpath ? newpath : path, flags);
}
free(newpath);
return ret;
}
# if WITH___OPEN_2
int
__open_2(const char *path, int flags)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
ret = real___open_2(newpath ? newpath : path, flags);
free(newpath);
return ret;
}
# endif
DIR *
opendir(const char *path)
{
DIR *ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return NULL;
ret = real_opendir(newpath ? newpath : path);
free(newpath);
return ret;
}
int
access(const char *path, int mode)
{
int ret;
char *newpath = NULL;
init_syms();
if (STRPREFIX(path, LEASEDIR) &&
getrealpath(&newpath, path) < 0)
return -1;
ret = real_access(newpath ? newpath : path, mode);
free(newpath);
return ret;
}
#else
/* Nothing to override if NSS plugin is not enabled */
#endif
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