examples/nss/wbtest.c

   1 /*
   2    nss sample code for extended winbindd functionality
   3
   4    Copyright (C) Andrew Tridgell (tridge@samba.org)
   5
   6    you are free to use this code in any way you see fit, including
   7    without restriction, using this code in your own products. You do
   8    not need to give any attribution.
   9 */
  10
  11 /*
  12    compile like this:
  13
  14       cc -o wbtest wbtest.c nss_winbind.c -ldl
  15
  16    and run like this:
  17
  18       ./wbtest /lib/libnss_winbind.so
  19 */
  20
  21 #define _GNU_SOURCE
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <nss.h>
  26 #include <dlfcn.h>
  27 #include <pwd.h>
  28 #include <grp.h>
  29 #include <errno.h>
  30 #include <string.h>
  31 #include <sys/types.h>
  32
  33 #include "nss_winbind.h"
  34
  35 static int nss_test_users(struct nss_state *nss)
  36 {
  37         struct passwd pwd;
  38
  39         if (nss_setpwent(nss) != 0) {
  40                 perror("setpwent");
  41                 return -1;
  42         }
  43
  44         /* loop over all users */
  45         while ((nss_getpwent(nss, &pwd) == 0)) {
  46                 char *sid, **group_sids, *name2;
  47                 int i;
  48
  49                 printf("User %s\n", pwd.pw_name);
  50                 if (nss_nametosid(nss, pwd.pw_name, &sid) != 0) {
  51                         perror("nametosid");
  52                         return -1;
  53                 }
  54                 printf("\tSID %s\n", sid);
  55
  56                 if (nss_sidtoname(nss, sid, &name2) != 0) {
  57                         perror("sidtoname");
  58                         return -1;
  59                 }
  60                 printf("\tSID->name %s\n", name2);
  61
  62                 if (nss_getusersids(nss, sid, &group_sids) != 0) {
  63                         perror("getusersids");
  64                         return -1;
  65                 }
  66
  67                 printf("\tGroups:\n");
  68                 for (i=0; group_sids[i]; i++) {
  69                         printf("\t\t%s\n", group_sids[i]);
  70                         free(group_sids[i]);
  71                 }
  72
  73                 free(sid);
  74                 free(name2);
  75                 free(group_sids);
  76         }
  77
  78
  79         if (nss_endpwent(nss) != 0) {
  80                 perror("endpwent");
  81                 return -1;
  82         }
  83
  84         return 0;
  85 }
  86
  87
  88 /*
  89   main program. It lists all users, listing user SIDs for each user
  90  */
  91 int main(int argc, char *argv[])
  92 {
  93         struct nss_state nss;
  94         const char *so_path = "/lib/libnss_winbind.so";
  95         int ret;
  96
  97         if (argc > 1) {
  98                 so_path = argv[1];
  99         }
 100
 101         if (nss_open(&nss, so_path) != 0) {
 102                 perror("nss_open");
 103                 exit(1);
 104         }
 105
 106         ret = nss_test_users(&nss);
 107
 108         nss_close(&nss);
 109
 110         return ret;
 111 }