nsswitch/nsstest.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    nss tester for winbindd
   4    Copyright (C) Andrew Tridgell 2001
   5    Copyright (C) Tim Potter 2003
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "replace.h"
  22 #include "nsswitch/nsstest.h"
  23
  24 static const char *so_path = "/lib/libnss_winbind.so";
  25 static const char *nss_name = "winbind";
  26 static int nss_errno;
  27 static NSS_STATUS last_error;
  28 static int total_errors;
  29
  30 static void *find_fn(const char *name)
  31 {
  32         char *s;
  33         static void *h;
  34         void *res;
  35
  36         if (asprintf(&s, "_nss_%s_%s", nss_name, name) < 0) {
  37                 exit(1);
  38         }
  39
  40         if (!h) {
  41                 h = dlopen(so_path, RTLD_LAZY);
  42         }
  43         if (!h) {
  44                 printf("Can't open shared library %s\n", so_path);
  45                 exit(1);
  46         }
  47         res = dlsym(h, s);
  48         if (!res) {
  49                 printf("Can't find function %s\n", s);
  50                 total_errors++;
  51                 free(s);
  52                 return NULL;
  53         }
  54         free(s);
  55         return res;
  56 }
  57
  58 static void report_nss_error(const char *who, NSS_STATUS status)
  59 {
  60         last_error = status;
  61         total_errors++;
  62         printf("ERROR %s: NSS_STATUS=%d  %d (nss_errno=%d)\n",
  63                who, status, NSS_STATUS_SUCCESS, nss_errno);
  64 }
  65
  66 static struct passwd *nss_getpwent(void)
  67 {
  68         NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
  69                                       size_t , int *) =
  70                 (NSS_STATUS (*)(struct passwd *, char *,
  71                                 size_t, int *))find_fn("getpwent_r");
  72         static struct passwd pwd;
  73         static char buf[1000];
  74         NSS_STATUS status;
  75
  76         if (!_nss_getpwent_r)
  77                 return NULL;
  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 *) =
  94                 (NSS_STATUS (*)(const char *, struct passwd *, char *,
  95                                 size_t, int *))find_fn("getpwnam_r");
  96         static struct passwd pwd;
  97         static char buf[1000];
  98         NSS_STATUS status;
  99
 100         if (!_nss_getpwnam_r)
 101                 return NULL;
 102
 103         status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
 104         if (status == NSS_STATUS_NOTFOUND) {
 105                 return NULL;
 106         }
 107         if (status != NSS_STATUS_SUCCESS) {
 108                 report_nss_error("getpwnam", status);
 109                 return NULL;
 110         }
 111         return &pwd;
 112 }
 113
 114 static struct passwd *nss_getpwuid(uid_t uid)
 115 {
 116         NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *,
 117                                       size_t , int *) =
 118                 (NSS_STATUS (*)(uid_t, struct passwd *, char *,
 119                                 size_t, int *))find_fn("getpwuid_r");
 120         static struct passwd pwd;
 121         static char buf[1000];
 122         NSS_STATUS status;
 123
 124         if (!_nss_getpwuid_r)
 125                 return NULL;
 126
 127         status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
 128         if (status == NSS_STATUS_NOTFOUND) {
 129                 return NULL;
 130         }
 131         if (status != NSS_STATUS_SUCCESS) {
 132                 report_nss_error("getpwuid", status);
 133                 return NULL;
 134         }
 135         return &pwd;
 136 }
 137
 138 static void nss_setpwent(void)
 139 {
 140         NSS_STATUS (*_nss_setpwent)(void) =
 141                 (NSS_STATUS(*)(void))find_fn("setpwent");
 142         NSS_STATUS status;
 143
 144         if (!_nss_setpwent)
 145                 return;
 146
 147         status = _nss_setpwent();
 148         if (status != NSS_STATUS_SUCCESS) {
 149                 report_nss_error("setpwent", status);
 150         }
 151 }
 152
 153 static void nss_endpwent(void)
 154 {
 155         NSS_STATUS (*_nss_endpwent)(void) =
 156                 (NSS_STATUS (*)(void))find_fn("endpwent");
 157         NSS_STATUS status;
 158
 159         if (!_nss_endpwent)
 160                 return;
 161
 162         status = _nss_endpwent();
 163         if (status != NSS_STATUS_SUCCESS) {
 164                 report_nss_error("endpwent", status);
 165         }
 166 }
 167
 168
 169 static struct group *nss_getgrent(void)
 170 {
 171         NSS_STATUS (*_nss_getgrent_r)(struct group *, char *,
 172                                       size_t , int *) =
 173                 (NSS_STATUS (*)(struct group *, char *,
 174                                 size_t, int *))find_fn("getgrent_r");
 175         static struct group grp;
 176         static char *buf;
 177         static int buflen = 1024;
 178         NSS_STATUS status;
 179
 180         if (!_nss_getgrent_r)
 181                 return NULL;
 182
 183         if (!buf)
 184                 buf = (char *)malloc(buflen);
 185
 186 again:
 187         status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
 188         if (status == NSS_STATUS_TRYAGAIN) {
 189                 buflen *= 2;
 190                 buf = (char *)realloc(buf, buflen);
 191                 if (!buf) {
 192                         return NULL;
 193                 }
 194                 goto again;
 195         }
 196         if (status == NSS_STATUS_NOTFOUND) {
 197                 free(buf);
 198                 return NULL;
 199         }
 200         if (status != NSS_STATUS_SUCCESS) {
 201                 report_nss_error("getgrent", status);
 202                 free(buf);
 203                 return NULL;
 204         }
 205         return &grp;
 206 }
 207
 208 static struct group *nss_getgrnam(const char *name)
 209 {
 210         NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
 211                                       size_t , int *) =
 212                 (NSS_STATUS (*)(const char *, struct group *, char *,
 213                                 size_t, int *))find_fn("getgrnam_r");
 214         static struct group grp;
 215         static char *buf;
 216         static int buflen = 1000;
 217         NSS_STATUS status;
 218
 219         if (!_nss_getgrnam_r)
 220                 return NULL;
 221
 222         if (!buf)
 223                 buf = (char *)malloc(buflen);
 224 again:
 225         status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
 226         if (status == NSS_STATUS_TRYAGAIN) {
 227                 buflen *= 2;
 228                 buf = (char *)realloc(buf, buflen);
 229                 if (!buf) {
 230                         return NULL;
 231                 }
 232                 goto again;
 233         }
 234         if (status == NSS_STATUS_NOTFOUND) {
 235                 free(buf);
 236                 return NULL;
 237         }
 238         if (status != NSS_STATUS_SUCCESS) {
 239                 report_nss_error("getgrnam", status);
 240                 free(buf);
 241                 return NULL;
 242         }
 243         return &grp;
 244 }
 245
 246 static struct group *nss_getgrgid(gid_t gid)
 247 {
 248         NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
 249                                       size_t , int *) =
 250                 (NSS_STATUS (*)(gid_t, struct group *, char *,
 251                                 size_t, int *))find_fn("getgrgid_r");
 252         static struct group grp;
 253         static char *buf;
 254         static int buflen = 1000;
 255         NSS_STATUS status;
 256
 257         if (!_nss_getgrgid_r)
 258                 return NULL;
 259
 260         if (!buf)
 261                 buf = (char *)malloc(buflen);
 262
 263 again:
 264         status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
 265         if (status == NSS_STATUS_TRYAGAIN) {
 266                 buflen *= 2;
 267                 buf = (char *)realloc(buf, buflen);
 268                 if (!buf) {
 269                         return NULL;
 270                 }
 271                 goto again;
 272         }
 273         if (status == NSS_STATUS_NOTFOUND) {
 274                 free(buf);
 275                 return NULL;
 276         }
 277         if (status != NSS_STATUS_SUCCESS) {
 278                 report_nss_error("getgrgid", status);
 279                 free(buf);
 280                 return NULL;
 281         }
 282         return &grp;
 283 }
 284
 285 static void nss_setgrent(void)
 286 {
 287         NSS_STATUS (*_nss_setgrent)(void) =
 288                 (NSS_STATUS (*)(void))find_fn("setgrent");
 289         NSS_STATUS status;
 290
 291         if (!_nss_setgrent)
 292                 return;
 293
 294         status = _nss_setgrent();
 295         if (status != NSS_STATUS_SUCCESS) {
 296                 report_nss_error("setgrent", status);
 297         }
 298 }
 299
 300 static void nss_endgrent(void)
 301 {
 302         NSS_STATUS (*_nss_endgrent)(void) =
 303                 (NSS_STATUS (*)(void))find_fn("endgrent");
 304         NSS_STATUS status;
 305
 306         if (!_nss_endgrent)
 307                 return;
 308
 309         status = _nss_endgrent();
 310         if (status != NSS_STATUS_SUCCESS) {
 311                 report_nss_error("endgrent", status);
 312         }
 313 }
 314
 315 static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
 316 {
 317         NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
 318                                       long int *, gid_t **, long int , int *) =
 319                 (NSS_STATUS (*)(char *, gid_t, long int *,
 320                                 long int *, gid_t **,
 321                                 long int, int *))find_fn("initgroups_dyn");
 322         NSS_STATUS status;
 323
 324         if (!_nss_initgroups)
 325                 return NSS_STATUS_UNAVAIL;
 326
 327         status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
 328         if (status != NSS_STATUS_SUCCESS) {
 329                 report_nss_error("initgroups", status);
 330         }
 331         return status;
 332 }
 333
 334 static void print_passwd(struct passwd *pwd)
 335 {
 336         printf("%s:%s:%lu:%lu:%s:%s:%s\n",
 337                pwd->pw_name,
 338                pwd->pw_passwd,
 339                (unsigned long)pwd->pw_uid,
 340                (unsigned long)pwd->pw_gid,
 341                pwd->pw_gecos,
 342                pwd->pw_dir,
 343                pwd->pw_shell);
 344 }
 345
 346 static void print_group(struct group *grp)
 347 {
 348         int i;
 349         printf("%s:%s:%lu:",
 350                grp->gr_name,
 351                grp->gr_passwd,
 352                (unsigned long)grp->gr_gid);
 353
 354         if (!grp->gr_mem[0]) {
 355                 printf("\n");
 356                 return;
 357         }
 358
 359         for (i=0; grp->gr_mem[i+1]; i++) {
 360                 printf("%s,", grp->gr_mem[i]);
 361         }
 362         printf("%s\n", grp->gr_mem[i]);
 363 }
 364
 365 static void nss_test_initgroups(char *name, gid_t gid)
 366 {
 367         long int size = 16;
 368         long int start = 1;
 369         gid_t *groups = NULL;
 370         int i;
 371         NSS_STATUS status;
 372
 373         groups = (gid_t *)malloc(sizeof(gid_t) * size);
 374         if (groups == NULL) {
 375                 printf("Unable to allocate memory for groups\n");
 376                 return;
 377         }
 378         groups[0] = gid;
 379
 380         status = nss_initgroups(name, gid, &groups, &start, &size);
 381         if (status == NSS_STATUS_UNAVAIL) {
 382                 printf("No initgroups fn\n");
 383                 return;
 384         }
 385
 386         for (i=0; i<start-1; i++) {
 387                 printf("%lu, ", (unsigned long)groups[i]);
 388         }
 389         printf("%lu\n", (unsigned long)groups[i]);
 390 }
 391
 392
 393 static void nss_test_users(void)
 394 {
 395         struct passwd *pwd;
 396
 397         nss_setpwent();
 398         /* loop over all users */
 399         while ((pwd = nss_getpwent())) {
 400                 printf("Testing user %s\n", pwd->pw_name);
 401                 printf("getpwent:   "); print_passwd(pwd);
 402                 pwd = nss_getpwuid(pwd->pw_uid);
 403                 if (!pwd) {
 404                         total_errors++;
 405                         printf("ERROR: can't getpwuid\n");
 406                         continue;
 407                 }
 408                 printf("getpwuid:   "); print_passwd(pwd);
 409                 pwd = nss_getpwnam(pwd->pw_name);
 410                 if (!pwd) {
 411                         total_errors++;
 412                         printf("ERROR: can't getpwnam\n");
 413                         continue;
 414                 }
 415                 printf("getpwnam:   "); print_passwd(pwd);
 416                 printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
 417                 printf("\n");
 418         }
 419         nss_endpwent();
 420 }
 421
 422 static void nss_test_groups(void)
 423 {
 424         struct group *grp;
 425
 426         nss_setgrent();
 427         /* loop over all groups */
 428         while ((grp = nss_getgrent())) {
 429                 printf("Testing group %s\n", grp->gr_name);
 430                 printf("getgrent: "); print_group(grp);
 431                 grp = nss_getgrnam(grp->gr_name);
 432                 if (!grp) {
 433                         total_errors++;
 434                         printf("ERROR: can't getgrnam\n");
 435                         continue;
 436                 }
 437                 printf("getgrnam: "); print_group(grp);
 438                 grp = nss_getgrgid(grp->gr_gid);
 439                 if (!grp) {
 440                         total_errors++;
 441                         printf("ERROR: can't getgrgid\n");
 442                         continue;
 443                 }
 444                 printf("getgrgid: "); print_group(grp);
 445                 printf("\n");
 446         }
 447         nss_endgrent();
 448 }
 449
 450 static void nss_test_errors(void)
 451 {
 452         struct passwd *pwd;
 453         struct group *grp;
 454
 455         pwd = getpwnam("nosuchname");
 456         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 457                 total_errors++;
 458                 printf("ERROR Non existent user gave error %d\n", last_error);
 459         }
 460
 461         pwd = getpwuid(0xFFF0);
 462         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 463                 total_errors++;
 464                 printf("ERROR Non existent uid gave error %d\n", last_error);
 465         }
 466
 467         grp = getgrnam("nosuchgroup");
 468         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 469                 total_errors++;
 470                 printf("ERROR Non existent group gave error %d\n", last_error);
 471         }
 472
 473         grp = getgrgid(0xFFF0);
 474         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 475                 total_errors++;
 476                 printf("ERROR Non existent gid gave error %d\n", last_error);
 477         }
 478 }
 479
 480  int main(int argc, char *argv[])
 481 {
 482         if (argc > 1) so_path = argv[1];
 483         if (argc > 2) nss_name = argv[2];
 484
 485         nss_test_users();
 486         nss_test_groups();
 487         nss_test_errors();
 488
 489         printf("total_errors=%d\n", total_errors);
 490
 491         return total_errors;
 492 }