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nsstest.c

/* 
   Unix SMB/Netbios implementation.
   Version 3.0
   nss tester for winbindd
   Copyright (C) Andrew Tridgell 2001
   
   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; either version 2 of the License, or
   (at your option) any later version.
   
   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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

static char *so_path = "/lib/libnss_winbind.so";
static int nss_errno;

static void *find_fn(const char *name)
{
      static void *h;
      void *res;
      if (!h) {
            h = dlopen(so_path, RTLD_LAZY);
      }
      if (!h) {
            printf("Can't open shared library %s\n", so_path);
            exit(1);
      }
      res = dlsym(h, name);
      if (!res) {
            printf("Can't find function %s\n", name);
            exit(1);
      }
      return res;
}

static void report_nss_error(NSS_STATUS status)
{
      if (status >= NSS_STATUS_SUCCESS) return;
      printf("NSS_STATUS=%d  %d\n", status, NSS_STATUS_SUCCESS);
}

static struct passwd *nss_getpwent(void)
{
      NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getpwent_r");
      static struct passwd pwd;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &pwd;
}

static struct passwd *nss_getpwnam(const char *name)
{
      NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getpwnam_r");
      static struct passwd pwd;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &pwd;
}

static struct passwd *nss_getpwuid(uid_t uid)
{
      NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getpwuid_r");
      static struct passwd pwd;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &pwd;
}

static void nss_setpwent(void)
{
      NSS_STATUS (*_nss_setpwent)(void) = find_fn("_nss_winbind_setpwent");

      report_nss_error(_nss_setpwent());
}

static void nss_endpwent(void)
{
      NSS_STATUS (*_nss_endpwent)(void) = find_fn("_nss_winbind_endpwent");

      report_nss_error(_nss_endpwent());
}


static struct group *nss_getgrent(void)
{
      NSS_STATUS (*_nss_getgrent_r)(struct group *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getgrent_r");
      static struct group grp;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getgrent_r(&grp, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &grp;
}

static struct group *nss_getgrnam(const char *name)
{
      NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getgrnam_r");
      static struct group grp;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getgrnam_r(name, &grp, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &grp;
}

static struct group *nss_getgrgid(gid_t gid)
{
      NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *, 
                              size_t , int *) = find_fn("_nss_winbind_getgrgid_r");
      static struct group grp;
      static char buf[1000];
      NSS_STATUS status;
      
      status = _nss_getgrgid_r(gid, &grp, buf, sizeof(buf), &nss_errno);
      if (status == NSS_STATUS_NOTFOUND) {
            return NULL;
      }
      if (status == NSS_STATUS_RETURN) {
            report_nss_error(status);
            return NULL;
      }
      return &grp;
}

static void nss_setgrent(void)
{
      NSS_STATUS (*_nss_setgrent)(void) = find_fn("_nss_winbind_setgrent");

      report_nss_error(_nss_setgrent());
}

static void nss_endgrent(void)
{
      NSS_STATUS (*_nss_endgrent)(void) = find_fn("_nss_winbind_endgrent");

      report_nss_error(_nss_endgrent());
}

static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
{
      NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
                              long int *, gid_t **, long int , int *) = 
            find_fn("_nss_winbind_initgroups_dyn");
      NSS_STATUS status;

      status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
      report_nss_error(status);
      return status;
}

static void print_passwd(struct passwd *pwd)
{
      printf("%s:%s:%d:%d:%s:%s:%s\n", 
             pwd->pw_name,
             pwd->pw_passwd,
             pwd->pw_uid,
             pwd->pw_gid,
             pwd->pw_gecos,
             pwd->pw_dir,
             pwd->pw_shell);
}

static void print_group(struct group *grp)
{
      int i;
      printf("%s:%s:%d: ", 
             grp->gr_name,
             grp->gr_passwd,
             grp->gr_gid);
      
      if (!grp->gr_mem[0]) {
            printf("\n");
            return;
      }
      
      for (i=0; grp->gr_mem[i+1]; i++) {
            printf("%s, ", grp->gr_mem[i]);
      }
      printf("%s\n", grp->gr_mem[i]);
}

static void nss_test_initgroups(char *name, gid_t gid)
{
      long int size = 16;
      long int start = 1;
      gid_t *groups = NULL;
      int i;

      groups = (gid_t *)malloc(size * sizeof(gid_t));
      groups[0] = gid;

      nss_initgroups(name, gid, &groups, &start, &size);
      for (i=0; i<start-1; i++) {
            printf("%d, ", groups[i]);
      }
      printf("%d\n", groups[i]);
}


static void nss_test_users(void)
{
      struct passwd *pwd;

      nss_setpwent();
      /* loop over all users */
      while ((pwd = nss_getpwent())) {
            printf("Testing user %s\n", pwd->pw_name);
            printf("getpwent:   "); print_passwd(pwd);
            pwd = nss_getpwnam(pwd->pw_name);
            printf("getpwnam:   "); print_passwd(pwd);
            pwd = nss_getpwuid(pwd->pw_uid);
            printf("getpwuid:   "); print_passwd(pwd);
            printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
            printf("\n");
      }
      nss_endpwent();
}

static void nss_test_groups(void)
{
      struct group *grp;

      nss_setgrent();
      /* loop over all groups */
      while ((grp = nss_getgrent())) {
            printf("Testing group %s\n", grp->gr_name);
            printf("getgrent: "); print_group(grp);
            grp = nss_getgrnam(grp->gr_name);
            printf("getgrnam: "); print_group(grp);
            grp = nss_getgrgid(grp->gr_gid);
            printf("getgrgid: "); print_group(grp);
            printf("\n");
      }
      nss_endgrent();
}


 int main(int argc, char *argv[])
{     
      if (argc > 1) so_path = argv[1];

      nss_test_users();
      nss_test_groups();

      return 0;
}

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