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Unix SMB/CIFS implementation.
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nss tester for winbindd
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Copyright (C) Andrew Tridgell 2001
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Copyright (C) Tim Potter 2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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static const char *so_path = "/lib/libnss_winbind.so";
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static const char *nss_name = "winbind";
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static NSS_STATUS last_error;
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static int total_errors;
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static void *find_fn(const char *name)
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if (asprintf(&s, "_nss_%s_%s", nss_name, name) < 0) {
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h = dlopen(so_path, RTLD_LAZY);
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printf("Can't open shared library %s\n", so_path);
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printf("Can't find function %s\n", s);
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static void report_nss_error(const char *who, NSS_STATUS status)
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printf("ERROR %s: NSS_STATUS=%d %d (nss_errno=%d)\n",
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who, status, NSS_STATUS_SUCCESS, nss_errno);
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static struct passwd *nss_getpwent(void)
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NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
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(NSS_STATUS (*)(struct passwd *, char *,
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size_t, int *))find_fn("getpwent_r");
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static struct passwd pwd;
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static char buf[1000];
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status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getpwent", status);
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static struct passwd *nss_getpwnam(const char *name)
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NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *,
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(NSS_STATUS (*)(const char *, struct passwd *, char *,
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size_t, int *))find_fn("getpwnam_r");
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static struct passwd pwd;
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static char buf[1000];
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if (!_nss_getpwnam_r)
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status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getpwnam", status);
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static struct passwd *nss_getpwuid(uid_t uid)
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NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *,
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(NSS_STATUS (*)(uid_t, struct passwd *, char *,
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size_t, int *))find_fn("getpwuid_r");
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static struct passwd pwd;
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static char buf[1000];
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if (!_nss_getpwuid_r)
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status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getpwuid", status);
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static void nss_setpwent(void)
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NSS_STATUS (*_nss_setpwent)(void) =
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(NSS_STATUS(*)(void))find_fn("setpwent");
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status = _nss_setpwent();
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("setpwent", status);
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static void nss_endpwent(void)
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NSS_STATUS (*_nss_endpwent)(void) =
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(NSS_STATUS (*)(void))find_fn("endpwent");
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status = _nss_endpwent();
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("endpwent", status);
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static struct group *nss_getgrent(void)
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NSS_STATUS (*_nss_getgrent_r)(struct group *, char *,
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(NSS_STATUS (*)(struct group *, char *,
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size_t, int *))find_fn("getgrent_r");
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static struct group grp;
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static int buflen = 1024;
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if (!_nss_getgrent_r)
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buf = (char *)malloc(buflen);
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status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
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if (status == NSS_STATUS_TRYAGAIN) {
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buf = (char *)realloc(buf, buflen);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getgrent", status);
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static struct group *nss_getgrnam(const char *name)
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NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
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(NSS_STATUS (*)(const char *, struct group *, char *,
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size_t, int *))find_fn("getgrnam_r");
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static struct group grp;
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static int buflen = 1000;
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if (!_nss_getgrnam_r)
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buf = (char *)malloc(buflen);
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status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
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if (status == NSS_STATUS_TRYAGAIN) {
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buf = (char *)realloc(buf, buflen);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getgrnam", status);
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static struct group *nss_getgrgid(gid_t gid)
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NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
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(NSS_STATUS (*)(gid_t, struct group *, char *,
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size_t, int *))find_fn("getgrgid_r");
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static struct group grp;
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static int buflen = 1000;
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if (!_nss_getgrgid_r)
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buf = (char *)malloc(buflen);
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status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
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if (status == NSS_STATUS_TRYAGAIN) {
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buf = (char *)realloc(buf, buflen);
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if (status == NSS_STATUS_NOTFOUND) {
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("getgrgid", status);
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static void nss_setgrent(void)
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NSS_STATUS (*_nss_setgrent)(void) =
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(NSS_STATUS (*)(void))find_fn("setgrent");
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status = _nss_setgrent();
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("setgrent", status);
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static void nss_endgrent(void)
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NSS_STATUS (*_nss_endgrent)(void) =
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(NSS_STATUS (*)(void))find_fn("endgrent");
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status = _nss_endgrent();
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("endgrent", status);
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static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
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NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
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long int *, gid_t **, long int , int *) =
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(NSS_STATUS (*)(char *, gid_t, long int *,
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long int *, gid_t **,
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long int, int *))find_fn("initgroups_dyn");
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if (!_nss_initgroups)
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return NSS_STATUS_UNAVAIL;
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status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
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if (status != NSS_STATUS_SUCCESS) {
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report_nss_error("initgroups", status);
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static void print_passwd(struct passwd *pwd)
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printf("%s:%s:%lu:%lu:%s:%s:%s\n",
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(unsigned long)pwd->pw_uid,
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(unsigned long)pwd->pw_gid,
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static void print_group(struct group *grp)
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(unsigned long)grp->gr_gid);
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if (!grp->gr_mem[0]) {
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for (i=0; grp->gr_mem[i+1]; i++) {
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printf("%s,", grp->gr_mem[i]);
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printf("%s\n", grp->gr_mem[i]);
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static void nss_test_initgroups(char *name, gid_t gid)
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gid_t *groups = NULL;
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groups = (gid_t *)malloc(size);
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status = nss_initgroups(name, gid, &groups, &start, &size);
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if (status == NSS_STATUS_UNAVAIL) {
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printf("No initgroups fn\n");
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for (i=0; i<start-1; i++) {
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printf("%lu, ", (unsigned long)groups[i]);
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printf("%lu\n", (unsigned long)groups[i]);
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static void nss_test_users(void)
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/* loop over all users */
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while ((pwd = nss_getpwent())) {
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printf("Testing user %s\n", pwd->pw_name);
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printf("getpwent: "); print_passwd(pwd);
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pwd = nss_getpwuid(pwd->pw_uid);
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printf("ERROR: can't getpwuid\n");
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printf("getpwuid: "); print_passwd(pwd);
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pwd = nss_getpwnam(pwd->pw_name);
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printf("ERROR: can't getpwnam\n");
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printf("getpwnam: "); print_passwd(pwd);
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printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
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static void nss_test_groups(void)
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/* loop over all groups */
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while ((grp = nss_getgrent())) {
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printf("Testing group %s\n", grp->gr_name);
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printf("getgrent: "); print_group(grp);
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grp = nss_getgrnam(grp->gr_name);
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printf("ERROR: can't getgrnam\n");
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printf("getgrnam: "); print_group(grp);
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grp = nss_getgrgid(grp->gr_gid);
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printf("ERROR: can't getgrgid\n");
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printf("getgrgid: "); print_group(grp);
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static void nss_test_errors(void)
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pwd = getpwnam("nosuchname");
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if (pwd || last_error != NSS_STATUS_NOTFOUND) {
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printf("ERROR Non existant user gave error %d\n", last_error);
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pwd = getpwuid(0xFFF0);
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if (pwd || last_error != NSS_STATUS_NOTFOUND) {
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printf("ERROR Non existant uid gave error %d\n", last_error);
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grp = getgrnam("nosuchgroup");
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if (grp || last_error != NSS_STATUS_NOTFOUND) {
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printf("ERROR Non existant group gave error %d\n", last_error);
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grp = getgrgid(0xFFF0);
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if (grp || last_error != NSS_STATUS_NOTFOUND) {
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printf("ERROR Non existant gid gave error %d\n", last_error);
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int main(int argc, char *argv[])
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if (argc > 1) so_path = argv[1];
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if (argc > 2) nss_name = argv[2];
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printf("total_errors=%d\n", total_errors);