nsstest.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    nss tester
   5
   6    Copyright (C) Andrew Tridgell 2001-2004
   7
   8    This library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Lesser General Public
  10    License as published by the Free Software Foundation; either
  11    version 2 of the License, or (at your option) any later version.
  12
  13    This library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Lesser General Public License for more details.
  17
  18    You should have received a copy of the GNU Lesser General Public
  19    License along with this library; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21 */
  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 <string.h>
  30 #include <sys/types.h>
  31
  32 typedef enum nss_status NSS_STATUS;
  33
  34 static const char *so_path = "/lib/libnss_winbind.so";
  35 static char *nss_name;
  36 static int nss_errno;
  37 static NSS_STATUS last_error;
  38 static int total_errors;
  39
  40 static void *find_fn(const char *name)
  41 {
  42         char s[1024];
  43         static void *h;
  44         void *res;
  45
  46         snprintf(s,sizeof(s), "_nss_%s_%s", nss_name, name);
  47
  48         if (!h) {
  49                 h = dlopen(so_path, RTLD_LAZY);
  50         }
  51         if (!h) {
  52                 printf("Can't open shared library %s : %s\n", so_path, dlerror());
  53                 exit(1);
  54         }
  55         res = dlsym(h, s);
  56         if (!res) {
  57                 printf("Can't find function %s : %s\n", s, dlerror());
  58                 return NULL;
  59         }
  60         return res;
  61 }
  62
  63 static void report_nss_error(const char *who, NSS_STATUS status)
  64 {
  65         last_error = status;
  66         total_errors++;
  67         printf("ERROR %s: NSS_STATUS=%d  %d (nss_errno=%d)\n",
  68                who, status, NSS_STATUS_SUCCESS, nss_errno);
  69 }
  70
  71 static struct passwd *nss_getpwent(void)
  72 {
  73         NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
  74                                       size_t , int *) = find_fn("getpwent_r");
  75         static struct passwd pwd;
  76         static char buf[1000];
  77         NSS_STATUS status;
  78
  79         status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
  80         if (status == NSS_STATUS_NOTFOUND) {
  81                 return NULL;
  82         }
  83         if (status != NSS_STATUS_SUCCESS) {
  84                 report_nss_error("getpwent", status);
  85                 return NULL;
  86         }
  87         return &pwd;
  88 }
  89
  90 static struct passwd *nss_getpwnam(const char *name)
  91 {
  92         NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *,
  93                                       size_t , int *) = find_fn("getpwnam_r");
  94         static struct passwd pwd;
  95         static char buf[1000];
  96         NSS_STATUS status;
  97
  98         status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
  99         if (status == NSS_STATUS_NOTFOUND) {
 100                 return NULL;
 101         }
 102         if (status != NSS_STATUS_SUCCESS) {
 103                 report_nss_error("getpwnam", status);
 104                 return NULL;
 105         }
 106         return &pwd;
 107 }
 108
 109 static struct passwd *nss_getpwuid(uid_t uid)
 110 {
 111         NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *,
 112                                       size_t , int *) = find_fn("getpwuid_r");
 113         static struct passwd pwd;
 114         static char buf[1000];
 115         NSS_STATUS status;
 116
 117         status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
 118         if (status == NSS_STATUS_NOTFOUND) {
 119                 return NULL;
 120         }
 121         if (status != NSS_STATUS_SUCCESS) {
 122                 report_nss_error("getpwuid", status);
 123                 return NULL;
 124         }
 125         return &pwd;
 126 }
 127
 128 static void nss_setpwent(void)
 129 {
 130         NSS_STATUS (*_nss_setpwent)(void) = find_fn("setpwent");
 131         NSS_STATUS status;
 132         status = _nss_setpwent();
 133         if (status != NSS_STATUS_SUCCESS) {
 134                 report_nss_error("setpwent", status);
 135         }
 136 }
 137
 138 static void nss_endpwent(void)
 139 {
 140         NSS_STATUS (*_nss_endpwent)(void) = find_fn("endpwent");
 141         NSS_STATUS status;
 142         status = _nss_endpwent();
 143         if (status != NSS_STATUS_SUCCESS) {
 144                 report_nss_error("endpwent", status);
 145         }
 146 }
 147
 148
 149 static struct group *nss_getgrent(void)
 150 {
 151         NSS_STATUS (*_nss_getgrent_r)(struct group *, char *,
 152                                       size_t , int *) = find_fn("getgrent_r");
 153         static struct group grp;
 154         static char *buf;
 155         static int buflen = 1024;
 156         NSS_STATUS status;
 157
 158         if (!buf) buf = malloc(buflen);
 159
 160 again:
 161         status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
 162         if (status == NSS_STATUS_TRYAGAIN) {
 163                 buflen *= 2;
 164                 buf = realloc(buf, buflen);
 165                 goto again;
 166         }
 167         if (status == NSS_STATUS_NOTFOUND) {
 168                 return NULL;
 169         }
 170         if (status != NSS_STATUS_SUCCESS) {
 171                 report_nss_error("getgrent", status);
 172                 return NULL;
 173         }
 174         return &grp;
 175 }
 176
 177 static struct group *nss_getgrnam(const char *name)
 178 {
 179         NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
 180                                       size_t , int *) = find_fn("getgrnam_r");
 181         static struct group grp;
 182         static char *buf;
 183         static int buflen = 1000;
 184         NSS_STATUS status;
 185
 186         if (!buf) buf = malloc(buflen);
 187 again:
 188         status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
 189         if (status == NSS_STATUS_TRYAGAIN) {
 190                 buflen *= 2;
 191                 buf = realloc(buf, buflen);
 192                 goto again;
 193         }
 194         if (status == NSS_STATUS_NOTFOUND) {
 195                 return NULL;
 196         }
 197         if (status != NSS_STATUS_SUCCESS) {
 198                 report_nss_error("getgrnam", status);
 199                 return NULL;
 200         }
 201         return &grp;
 202 }
 203
 204 static struct group *nss_getgrgid(gid_t gid)
 205 {
 206         NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
 207                                       size_t , int *) = find_fn("getgrgid_r");
 208         static struct group grp;
 209         static char *buf;
 210         static int buflen = 1000;
 211         NSS_STATUS status;
 212
 213         if (!buf) buf = malloc(buflen);
 214 again:
 215         status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
 216         if (status == NSS_STATUS_TRYAGAIN) {
 217                 buflen *= 2;
 218                 buf = realloc(buf, buflen);
 219                 goto again;
 220         }
 221         if (status == NSS_STATUS_NOTFOUND) {
 222                 return NULL;
 223         }
 224         if (status != NSS_STATUS_SUCCESS) {
 225                 report_nss_error("getgrgid", status);
 226                 return NULL;
 227         }
 228         return &grp;
 229 }
 230
 231 static void nss_setgrent(void)
 232 {
 233         NSS_STATUS (*_nss_setgrent)(void) = find_fn("setgrent");
 234         NSS_STATUS status;
 235         status = _nss_setgrent();
 236         if (status != NSS_STATUS_SUCCESS) {
 237                 report_nss_error("setgrent", status);
 238         }
 239 }
 240
 241 static void nss_endgrent(void)
 242 {
 243         NSS_STATUS (*_nss_endgrent)(void) = find_fn("endgrent");
 244         NSS_STATUS status;
 245         status = _nss_endgrent();
 246         if (status != NSS_STATUS_SUCCESS) {
 247                 report_nss_error("endgrent", status);
 248         }
 249 }
 250
 251 static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
 252 {
 253         NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
 254                                       long int *, gid_t **, long int , int *) =
 255                 find_fn("initgroups_dyn");
 256         NSS_STATUS status;
 257
 258         if (!_nss_initgroups) return NSS_STATUS_UNAVAIL;
 259
 260         status = _nss_initgroups(user, group, start, size, groups, 2, &nss_errno);
 261         printf("nss_errno=%d *size=%d\n", nss_errno, *size);
 262         if (status != NSS_STATUS_SUCCESS) {
 263                 report_nss_error("initgroups", status);
 264         }
 265         return status;
 266 }
 267
 268 static void print_passwd(struct passwd *pwd)
 269 {
 270         printf("%s:%s:%d:%d:%s:%s:%s\n",
 271                pwd->pw_name,
 272                pwd->pw_passwd,
 273                pwd->pw_uid,
 274                pwd->pw_gid,
 275                pwd->pw_gecos,
 276                pwd->pw_dir,
 277                pwd->pw_shell);
 278 }
 279
 280 static void print_group(struct group *grp)
 281 {
 282         int i;
 283         printf("%s:%s:%d: ",
 284                grp->gr_name,
 285                grp->gr_passwd,
 286                grp->gr_gid);
 287
 288         if (!grp->gr_mem[0]) {
 289                 printf("\n");
 290                 return;
 291         }
 292
 293         for (i=0; grp->gr_mem[i+1]; i++) {
 294                 printf("%s, ", grp->gr_mem[i]);
 295         }
 296         printf("%s\n", grp->gr_mem[i]);
 297 }
 298
 299 static void nss_test_initgroups(char *name, gid_t gid)
 300 {
 301         long int size = 16;
 302         long int start = 1;
 303         gid_t *groups = NULL;
 304         int i;
 305         NSS_STATUS status;
 306
 307         groups = (gid_t *)malloc(size * sizeof(gid_t));
 308         groups[0] = gid;
 309
 310         status = nss_initgroups(name, gid, &groups, &start, &size);
 311         if (status == NSS_STATUS_UNAVAIL) {
 312                 printf("No initgroups fn\n");
 313                 return;
 314         }
 315
 316         for (i=0; i<start-1; i++) {
 317                 printf("%d, ", groups[i]);
 318         }
 319         printf("%d\n", groups[i]);
 320 }
 321
 322
 323 static void nss_test_users(void)
 324 {
 325         struct passwd *pwd;
 326
 327         nss_setpwent();
 328         /* loop over all users */
 329         while ((pwd = nss_getpwent())) {
 330                 printf("Testing user %s\n", pwd->pw_name);
 331                 printf("getpwent:   "); print_passwd(pwd);
 332                 pwd = nss_getpwuid(pwd->pw_uid);
 333                 if (!pwd) {
 334                         total_errors++;
 335                         printf("ERROR: can't getpwuid\n");
 336                         continue;
 337                 }
 338                 printf("getpwuid:   "); print_passwd(pwd);
 339                 pwd = nss_getpwnam(pwd->pw_name);
 340                 if (!pwd) {
 341                         total_errors++;
 342                         printf("ERROR: can't getpwnam\n");
 343                         continue;
 344                 }
 345                 printf("getpwnam:   "); print_passwd(pwd);
 346                 printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
 347                 printf("\n");
 348         }
 349         nss_endpwent();
 350 }
 351
 352 static void nss_test_groups(void)
 353 {
 354         struct group *grp;
 355
 356         nss_setgrent();
 357         /* loop over all groups */
 358         while ((grp = nss_getgrent())) {
 359                 printf("Testing group %s\n", grp->gr_name);
 360                 printf("getgrent: "); print_group(grp);
 361                 grp = nss_getgrnam(grp->gr_name);
 362                 if (!grp) {
 363                         total_errors++;
 364                         printf("ERROR: can't getgrnam\n");
 365                         continue;
 366                 }
 367                 printf("getgrnam: "); print_group(grp);
 368                 grp = nss_getgrgid(grp->gr_gid);
 369                 if (!grp) {
 370                         total_errors++;
 371                         printf("ERROR: can't getgrgid\n");
 372                         continue;
 373                 }
 374                 printf("getgrgid: "); print_group(grp);
 375                 printf("\n");
 376         }
 377         nss_endgrent();
 378 }
 379
 380 static void nss_test_errors(void)
 381 {
 382         struct passwd *pwd;
 383         struct group *grp;
 384
 385         pwd = getpwnam("nosuchname");
 386         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 387                 total_errors++;
 388                 printf("ERROR Non existant user gave error %d\n", last_error);
 389         }
 390
 391         pwd = getpwuid(0xFFF0);
 392         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 393                 total_errors++;
 394                 printf("ERROR Non existant uid gave error %d\n", last_error);
 395         }
 396
 397         grp = getgrnam("nosuchgroup");
 398         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 399                 total_errors++;
 400                 printf("ERROR Non existant group gave error %d\n", last_error);
 401         }
 402
 403         grp = getgrgid(0xFFF0);
 404         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 405                 total_errors++;
 406                 printf("ERROR Non existant gid gave error %d\n", last_error);
 407         }
 408 }
 409
 410  int main(int argc, char *argv[])
 411 {
 412         char *p;
 413
 414         if (argc > 1) so_path = argv[1];
 415
 416         p = strrchr(so_path, '_');
 417         if (!p) {
 418                 printf("Badly formed name for .so - must be libnss_FOO.so\n");
 419                 exit(1);
 420         }
 421         nss_name = strdup(p+1);
 422         p = strchr(nss_name, '.');
 423         if (p) *p = 0;
 424
 425         printf("so_path=%s nss_name=%s\n\n", so_path, nss_name);
 426
 427         nss_test_users();
 428         nss_test_groups();
 429         nss_test_errors();
 430
 431         printf("total_errors=%d\n", total_errors);
 432
 433         return total_errors;
 434 }