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 #define SAFE_FREE(x) do { if ((x) != NULL) {free(x); (x)=NULL;} } while(0)
  25
  26 static const char *so_path = "/lib/libnss_winbind.so";
  27 static const char *nss_name = "winbind";
  28 static int nss_errno;
  29 static NSS_STATUS last_error;
  30 static int total_errors;
  31
  32 static void *find_fn(const char *name)
  33 {
  34         char *s;
  35         static void *h;
  36         void *res;
  37
  38         if (asprintf(&s, "_nss_%s_%s", nss_name, name) < 0) {
  39                 exit(1);
  40         }
  41
  42         if (!h) {
  43                 h = dlopen(so_path, RTLD_LAZY);
  44         }
  45         if (!h) {
  46                 printf("Can't open shared library %s\n", so_path);
  47                 exit(1);
  48         }
  49         res = dlsym(h, s);
  50         if (!res) {
  51                 printf("Can't find function %s\n", s);
  52                 total_errors++;
  53                 SAFE_FREE(s);
  54                 return NULL;
  55         }
  56         SAFE_FREE(s);
  57         return res;
  58 }
  59
  60 static void report_nss_error(const char *who, NSS_STATUS status)
  61 {
  62         last_error = status;
  63         total_errors++;
  64         printf("ERROR %s: NSS_STATUS=%d  %d (nss_errno=%d)\n",
  65                who, status, NSS_STATUS_SUCCESS, nss_errno);
  66 }
  67
  68 static struct passwd *nss_getpwent(void)
  69 {
  70         NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
  71                                       size_t , int *) =
  72                 (NSS_STATUS (*)(struct passwd *, char *,
  73                                 size_t, int *))find_fn("getpwent_r");
  74         static struct passwd pwd;
  75         static char buf[1000];
  76         NSS_STATUS status;
  77
  78         if (!_nss_getpwent_r)
  79                 return NULL;
  80
  81         status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
  82         if (status == NSS_STATUS_NOTFOUND) {
  83                 return NULL;
  84         }
  85         if (status != NSS_STATUS_SUCCESS) {
  86                 report_nss_error("getpwent", status);
  87                 return NULL;
  88         }
  89         return &pwd;
  90 }
  91
  92 static struct passwd *nss_getpwnam(const char *name)
  93 {
  94         NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *,
  95                                       size_t , int *) =
  96                 (NSS_STATUS (*)(const char *, struct passwd *, char *,
  97                                 size_t, int *))find_fn("getpwnam_r");
  98         static struct passwd pwd;
  99         static char buf[1000];
 100         NSS_STATUS status;
 101
 102         if (!_nss_getpwnam_r)
 103                 return NULL;
 104
 105         status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
 106         if (status == NSS_STATUS_NOTFOUND) {
 107                 return NULL;
 108         }
 109         if (status != NSS_STATUS_SUCCESS) {
 110                 report_nss_error("getpwnam", status);
 111                 return NULL;
 112         }
 113         return &pwd;
 114 }
 115
 116 static struct passwd *nss_getpwuid(uid_t uid)
 117 {
 118         NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *,
 119                                       size_t , int *) =
 120                 (NSS_STATUS (*)(uid_t, struct passwd *, char *,
 121                                 size_t, int *))find_fn("getpwuid_r");
 122         static struct passwd pwd;
 123         static char buf[1000];
 124         NSS_STATUS status;
 125
 126         if (!_nss_getpwuid_r)
 127                 return NULL;
 128
 129         status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
 130         if (status == NSS_STATUS_NOTFOUND) {
 131                 return NULL;
 132         }
 133         if (status != NSS_STATUS_SUCCESS) {
 134                 report_nss_error("getpwuid", status);
 135                 return NULL;
 136         }
 137         return &pwd;
 138 }
 139
 140 static void samba_nss_setpwent(void)
 141 {
 142         NSS_STATUS (*_nss_setpwent)(void) =
 143                 (NSS_STATUS(*)(void))find_fn("setpwent");
 144         NSS_STATUS status;
 145
 146         if (!_nss_setpwent)
 147                 return;
 148
 149         status = _nss_setpwent();
 150         if (status != NSS_STATUS_SUCCESS) {
 151                 report_nss_error("setpwent", status);
 152         }
 153 }
 154
 155 static void samba_nss_endpwent(void)
 156 {
 157         NSS_STATUS (*_nss_endpwent)(void) =
 158                 (NSS_STATUS (*)(void))find_fn("endpwent");
 159         NSS_STATUS status;
 160
 161         if (!_nss_endpwent)
 162                 return;
 163
 164         status = _nss_endpwent();
 165         if (status != NSS_STATUS_SUCCESS) {
 166                 report_nss_error("endpwent", status);
 167         }
 168 }
 169
 170
 171 static struct group *nss_getgrent(void)
 172 {
 173         NSS_STATUS (*_nss_getgrent_r)(struct group *, char *,
 174                                       size_t , int *) =
 175                 (NSS_STATUS (*)(struct group *, char *,
 176                                 size_t, int *))find_fn("getgrent_r");
 177         static struct group grp;
 178         static char *buf;
 179         static int buflen = 1024;
 180         NSS_STATUS status;
 181
 182         if (!_nss_getgrent_r)
 183                 return NULL;
 184
 185         if (!buf)
 186                 buf = (char *)malloc(buflen);
 187
 188 again:
 189         status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
 190         if (status == NSS_STATUS_TRYAGAIN) {
 191                 char *oldbuf = buf;
 192                 buflen *= 2;
 193                 buf = (char *)realloc(buf, buflen);
 194                 if (!buf) {
 195                         SAFE_FREE(oldbuf);
 196                         return NULL;
 197                 }
 198                 goto again;
 199         }
 200         if (status == NSS_STATUS_NOTFOUND) {
 201                 SAFE_FREE(buf);
 202                 return NULL;
 203         }
 204         if (status != NSS_STATUS_SUCCESS) {
 205                 report_nss_error("getgrent", status);
 206                 SAFE_FREE(buf);
 207                 return NULL;
 208         }
 209         return &grp;
 210 }
 211
 212 static struct group *nss_getgrnam(const char *name)
 213 {
 214         NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
 215                                       size_t , int *) =
 216                 (NSS_STATUS (*)(const char *, struct group *, char *,
 217                                 size_t, int *))find_fn("getgrnam_r");
 218         static struct group grp;
 219         static char *buf;
 220         static int buflen = 1000;
 221         NSS_STATUS status;
 222
 223         if (!_nss_getgrnam_r)
 224                 return NULL;
 225
 226         if (!buf)
 227                 buf = (char *)malloc(buflen);
 228 again:
 229         status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
 230         if (status == NSS_STATUS_TRYAGAIN) {
 231                 char *oldbuf = buf;
 232                 buflen *= 2;
 233                 buf = (char *)realloc(buf, buflen);
 234                 if (!buf) {
 235                         SAFE_FREE(oldbuf);
 236                         return NULL;
 237                 }
 238                 goto again;
 239         }
 240         if (status == NSS_STATUS_NOTFOUND) {
 241                 SAFE_FREE(buf);
 242                 return NULL;
 243         }
 244         if (status != NSS_STATUS_SUCCESS) {
 245                 report_nss_error("getgrnam", status);
 246                 SAFE_FREE(buf);
 247                 return NULL;
 248         }
 249         return &grp;
 250 }
 251
 252 static struct group *nss_getgrgid(gid_t gid)
 253 {
 254         NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
 255                                       size_t , int *) =
 256                 (NSS_STATUS (*)(gid_t, struct group *, char *,
 257                                 size_t, int *))find_fn("getgrgid_r");
 258         static struct group grp;
 259         static char *buf;
 260         static int buflen = 1000;
 261         NSS_STATUS status;
 262
 263         if (!_nss_getgrgid_r)
 264                 return NULL;
 265
 266         if (!buf)
 267                 buf = (char *)malloc(buflen);
 268
 269 again:
 270         status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
 271         if (status == NSS_STATUS_TRYAGAIN) {
 272                 char *oldbuf = buf;
 273                 buflen *= 2;
 274                 buf = (char *)realloc(buf, buflen);
 275                 if (!buf) {
 276                         SAFE_FREE(oldbuf);
 277                         return NULL;
 278                 }
 279                 goto again;
 280         }
 281         if (status == NSS_STATUS_NOTFOUND) {
 282                 SAFE_FREE(buf);
 283                 return NULL;
 284         }
 285         if (status != NSS_STATUS_SUCCESS) {
 286                 report_nss_error("getgrgid", status);
 287                 SAFE_FREE(buf);
 288                 return NULL;
 289         }
 290         return &grp;
 291 }
 292
 293 static void samba_nss_setgrent(void)
 294 {
 295         NSS_STATUS (*_nss_setgrent)(void) =
 296                 (NSS_STATUS (*)(void))find_fn("setgrent");
 297         NSS_STATUS status;
 298
 299         if (!_nss_setgrent)
 300                 return;
 301
 302         status = _nss_setgrent();
 303         if (status != NSS_STATUS_SUCCESS) {
 304                 report_nss_error("setgrent", status);
 305         }
 306 }
 307
 308 static void samba_nss_endgrent(void)
 309 {
 310         NSS_STATUS (*_nss_endgrent)(void) =
 311                 (NSS_STATUS (*)(void))find_fn("endgrent");
 312         NSS_STATUS status;
 313
 314         if (!_nss_endgrent)
 315                 return;
 316
 317         status = _nss_endgrent();
 318         if (status != NSS_STATUS_SUCCESS) {
 319                 report_nss_error("endgrent", status);
 320         }
 321 }
 322
 323 static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
 324 {
 325         NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
 326                                       long int *, gid_t **, long int , int *) =
 327                 (NSS_STATUS (*)(char *, gid_t, long int *,
 328                                 long int *, gid_t **,
 329                                 long int, int *))find_fn("initgroups_dyn");
 330         NSS_STATUS status;
 331
 332         if (!_nss_initgroups)
 333                 return NSS_STATUS_UNAVAIL;
 334
 335         status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
 336         if (status != NSS_STATUS_SUCCESS) {
 337                 report_nss_error("initgroups", status);
 338         }
 339         return status;
 340 }
 341
 342 static void print_passwd(struct passwd *pwd)
 343 {
 344         printf("%s:%s:%lu:%lu:%s:%s:%s\n",
 345                pwd->pw_name,
 346                pwd->pw_passwd,
 347                (unsigned long)pwd->pw_uid,
 348                (unsigned long)pwd->pw_gid,
 349                pwd->pw_gecos,
 350                pwd->pw_dir,
 351                pwd->pw_shell);
 352 }
 353
 354 static void print_group(struct group *grp)
 355 {
 356         int i;
 357         printf("%s:%s:%lu:",
 358                grp->gr_name,
 359                grp->gr_passwd,
 360                (unsigned long)grp->gr_gid);
 361
 362         if (!grp->gr_mem[0]) {
 363                 printf("\n");
 364                 return;
 365         }
 366
 367         for (i=0; grp->gr_mem[i+1]; i++) {
 368                 printf("%s,", grp->gr_mem[i]);
 369         }
 370         printf("%s\n", grp->gr_mem[i]);
 371 }
 372
 373 static void nss_test_initgroups(char *name, gid_t gid)
 374 {
 375         long int size = 16;
 376         long int start = 1;
 377         gid_t *groups = NULL;
 378         int i;
 379         NSS_STATUS status;
 380
 381         groups = (gid_t *)malloc(sizeof(gid_t) * size);
 382         if (groups == NULL) {
 383                 printf("Unable to allocate memory for groups\n");
 384                 return;
 385         }
 386         groups[0] = gid;
 387
 388         status = nss_initgroups(name, gid, &groups, &start, &size);
 389         if (status == NSS_STATUS_UNAVAIL) {
 390                 printf("No initgroups fn\n");
 391                 return;
 392         }
 393
 394         for (i=0; i<start-1; i++) {
 395                 printf("%lu, ", (unsigned long)groups[i]);
 396         }
 397         printf("%lu\n", (unsigned long)groups[i]);
 398 }
 399
 400
 401 static void nss_test_users(void)
 402 {
 403         struct passwd *pwd;
 404
 405         samba_nss_setpwent();
 406         /* loop over all users */
 407         while ((pwd = nss_getpwent())) {
 408                 printf("Testing user %s\n", pwd->pw_name);
 409                 printf("getpwent:   "); print_passwd(pwd);
 410                 pwd = nss_getpwuid(pwd->pw_uid);
 411                 if (!pwd) {
 412                         total_errors++;
 413                         printf("ERROR: can't getpwuid\n");
 414                         continue;
 415                 }
 416                 printf("getpwuid:   "); print_passwd(pwd);
 417                 pwd = nss_getpwnam(pwd->pw_name);
 418                 if (!pwd) {
 419                         total_errors++;
 420                         printf("ERROR: can't getpwnam\n");
 421                         continue;
 422                 }
 423                 printf("getpwnam:   "); print_passwd(pwd);
 424                 printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
 425                 printf("\n");
 426         }
 427         samba_nss_endpwent();
 428 }
 429
 430 static void nss_test_groups(void)
 431 {
 432         struct group *grp;
 433
 434         samba_nss_setgrent();
 435         /* loop over all groups */
 436         while ((grp = nss_getgrent())) {
 437                 printf("Testing group %s\n", grp->gr_name);
 438                 printf("getgrent: "); print_group(grp);
 439                 grp = nss_getgrnam(grp->gr_name);
 440                 if (!grp) {
 441                         total_errors++;
 442                         printf("ERROR: can't getgrnam\n");
 443                         continue;
 444                 }
 445                 printf("getgrnam: "); print_group(grp);
 446                 grp = nss_getgrgid(grp->gr_gid);
 447                 if (!grp) {
 448                         total_errors++;
 449                         printf("ERROR: can't getgrgid\n");
 450                         continue;
 451                 }
 452                 printf("getgrgid: "); print_group(grp);
 453                 printf("\n");
 454         }
 455         samba_nss_endgrent();
 456 }
 457
 458 static void nss_test_errors(void)
 459 {
 460         struct passwd *pwd;
 461         struct group *grp;
 462
 463         pwd = getpwnam("nosuchname");
 464         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 465                 total_errors++;
 466                 printf("ERROR Non existent user gave error %d\n", last_error);
 467         }
 468
 469         pwd = getpwuid(0xFF00);
 470         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 471                 total_errors++;
 472                 printf("ERROR Non existent uid gave error %d\n", last_error);
 473         }
 474
 475         grp = getgrnam("nosuchgroup");
 476         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 477                 total_errors++;
 478                 printf("ERROR Non existent group gave error %d\n", last_error);
 479         }
 480
 481         grp = getgrgid(0xFFF0);
 482         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 483                 total_errors++;
 484                 printf("ERROR Non existent gid gave error %d\n", last_error);
 485         }
 486 }
 487
 488  int main(int argc, char *argv[])
 489 {
 490         if (argc > 1) so_path = argv[1];
 491         if (argc > 2) nss_name = argv[2];
 492
 493         nss_test_users();
 494         nss_test_groups();
 495         nss_test_errors();
 496
 497         printf("total_errors=%d\n", total_errors);
 498
 499         return total_errors;
 500 }