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 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 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                 buflen *= 2;
 192                 buf = (char *)realloc(buf, buflen);
 193                 if (!buf) {
 194                         return NULL;
 195                 }
 196                 goto again;
 197         }
 198         if (status == NSS_STATUS_NOTFOUND) {
 199                 SAFE_FREE(buf);
 200                 return NULL;
 201         }
 202         if (status != NSS_STATUS_SUCCESS) {
 203                 report_nss_error("getgrent", status);
 204                 SAFE_FREE(buf);
 205                 return NULL;
 206         }
 207         return &grp;
 208 }
 209
 210 static struct group *nss_getgrnam(const char *name)
 211 {
 212         NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
 213                                       size_t , int *) =
 214                 (NSS_STATUS (*)(const char *, struct group *, char *,
 215                                 size_t, int *))find_fn("getgrnam_r");
 216         static struct group grp;
 217         static char *buf;
 218         static int buflen = 1000;
 219         NSS_STATUS status;
 220
 221         if (!_nss_getgrnam_r)
 222                 return NULL;
 223
 224         if (!buf)
 225                 buf = (char *)malloc(buflen);
 226 again:
 227         status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
 228         if (status == NSS_STATUS_TRYAGAIN) {
 229                 buflen *= 2;
 230                 buf = (char *)realloc(buf, buflen);
 231                 if (!buf) {
 232                         return NULL;
 233                 }
 234                 goto again;
 235         }
 236         if (status == NSS_STATUS_NOTFOUND) {
 237                 SAFE_FREE(buf);
 238                 return NULL;
 239         }
 240         if (status != NSS_STATUS_SUCCESS) {
 241                 report_nss_error("getgrnam", status);
 242                 SAFE_FREE(buf);
 243                 return NULL;
 244         }
 245         return &grp;
 246 }
 247
 248 static struct group *nss_getgrgid(gid_t gid)
 249 {
 250         NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
 251                                       size_t , int *) =
 252                 (NSS_STATUS (*)(gid_t, struct group *, char *,
 253                                 size_t, int *))find_fn("getgrgid_r");
 254         static struct group grp;
 255         static char *buf;
 256         static int buflen = 1000;
 257         NSS_STATUS status;
 258
 259         if (!_nss_getgrgid_r)
 260                 return NULL;
 261
 262         if (!buf)
 263                 buf = (char *)malloc(buflen);
 264
 265 again:
 266         status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
 267         if (status == NSS_STATUS_TRYAGAIN) {
 268                 buflen *= 2;
 269                 buf = (char *)realloc(buf, buflen);
 270                 if (!buf) {
 271                         return NULL;
 272                 }
 273                 goto again;
 274         }
 275         if (status == NSS_STATUS_NOTFOUND) {
 276                 SAFE_FREE(buf);
 277                 return NULL;
 278         }
 279         if (status != NSS_STATUS_SUCCESS) {
 280                 report_nss_error("getgrgid", status);
 281                 SAFE_FREE(buf);
 282                 return NULL;
 283         }
 284         return &grp;
 285 }
 286
 287 static void nss_setgrent(void)
 288 {
 289         NSS_STATUS (*_nss_setgrent)(void) =
 290                 (NSS_STATUS (*)(void))find_fn("setgrent");
 291         NSS_STATUS status;
 292
 293         if (!_nss_setgrent)
 294                 return;
 295
 296         status = _nss_setgrent();
 297         if (status != NSS_STATUS_SUCCESS) {
 298                 report_nss_error("setgrent", status);
 299         }
 300 }
 301
 302 static void nss_endgrent(void)
 303 {
 304         NSS_STATUS (*_nss_endgrent)(void) =
 305                 (NSS_STATUS (*)(void))find_fn("endgrent");
 306         NSS_STATUS status;
 307
 308         if (!_nss_endgrent)
 309                 return;
 310
 311         status = _nss_endgrent();
 312         if (status != NSS_STATUS_SUCCESS) {
 313                 report_nss_error("endgrent", status);
 314         }
 315 }
 316
 317 static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
 318 {
 319         NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
 320                                       long int *, gid_t **, long int , int *) =
 321                 (NSS_STATUS (*)(char *, gid_t, long int *,
 322                                 long int *, gid_t **,
 323                                 long int, int *))find_fn("initgroups_dyn");
 324         NSS_STATUS status;
 325
 326         if (!_nss_initgroups)
 327                 return NSS_STATUS_UNAVAIL;
 328
 329         status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
 330         if (status != NSS_STATUS_SUCCESS) {
 331                 report_nss_error("initgroups", status);
 332         }
 333         return status;
 334 }
 335
 336 static void print_passwd(struct passwd *pwd)
 337 {
 338         printf("%s:%s:%lu:%lu:%s:%s:%s\n",
 339                pwd->pw_name,
 340                pwd->pw_passwd,
 341                (unsigned long)pwd->pw_uid,
 342                (unsigned long)pwd->pw_gid,
 343                pwd->pw_gecos,
 344                pwd->pw_dir,
 345                pwd->pw_shell);
 346 }
 347
 348 static void print_group(struct group *grp)
 349 {
 350         int i;
 351         printf("%s:%s:%lu:",
 352                grp->gr_name,
 353                grp->gr_passwd,
 354                (unsigned long)grp->gr_gid);
 355
 356         if (!grp->gr_mem[0]) {
 357                 printf("\n");
 358                 return;
 359         }
 360
 361         for (i=0; grp->gr_mem[i+1]; i++) {
 362                 printf("%s,", grp->gr_mem[i]);
 363         }
 364         printf("%s\n", grp->gr_mem[i]);
 365 }
 366
 367 static void nss_test_initgroups(char *name, gid_t gid)
 368 {
 369         long int size = 16;
 370         long int start = 1;
 371         gid_t *groups = NULL;
 372         int i;
 373         NSS_STATUS status;
 374
 375         groups = (gid_t *)malloc(sizeof(gid_t) * size);
 376         if (groups == NULL) {
 377                 printf("Unable to allocate memory for groups\n");
 378                 return;
 379         }
 380         groups[0] = gid;
 381
 382         status = nss_initgroups(name, gid, &groups, &start, &size);
 383         if (status == NSS_STATUS_UNAVAIL) {
 384                 printf("No initgroups fn\n");
 385                 return;
 386         }
 387
 388         for (i=0; i<start-1; i++) {
 389                 printf("%lu, ", (unsigned long)groups[i]);
 390         }
 391         printf("%lu\n", (unsigned long)groups[i]);
 392 }
 393
 394
 395 static void nss_test_users(void)
 396 {
 397         struct passwd *pwd;
 398
 399         nss_setpwent();
 400         /* loop over all users */
 401         while ((pwd = nss_getpwent())) {
 402                 printf("Testing user %s\n", pwd->pw_name);
 403                 printf("getpwent:   "); print_passwd(pwd);
 404                 pwd = nss_getpwuid(pwd->pw_uid);
 405                 if (!pwd) {
 406                         total_errors++;
 407                         printf("ERROR: can't getpwuid\n");
 408                         continue;
 409                 }
 410                 printf("getpwuid:   "); print_passwd(pwd);
 411                 pwd = nss_getpwnam(pwd->pw_name);
 412                 if (!pwd) {
 413                         total_errors++;
 414                         printf("ERROR: can't getpwnam\n");
 415                         continue;
 416                 }
 417                 printf("getpwnam:   "); print_passwd(pwd);
 418                 printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
 419                 printf("\n");
 420         }
 421         nss_endpwent();
 422 }
 423
 424 static void nss_test_groups(void)
 425 {
 426         struct group *grp;
 427
 428         nss_setgrent();
 429         /* loop over all groups */
 430         while ((grp = nss_getgrent())) {
 431                 printf("Testing group %s\n", grp->gr_name);
 432                 printf("getgrent: "); print_group(grp);
 433                 grp = nss_getgrnam(grp->gr_name);
 434                 if (!grp) {
 435                         total_errors++;
 436                         printf("ERROR: can't getgrnam\n");
 437                         continue;
 438                 }
 439                 printf("getgrnam: "); print_group(grp);
 440                 grp = nss_getgrgid(grp->gr_gid);
 441                 if (!grp) {
 442                         total_errors++;
 443                         printf("ERROR: can't getgrgid\n");
 444                         continue;
 445                 }
 446                 printf("getgrgid: "); print_group(grp);
 447                 printf("\n");
 448         }
 449         nss_endgrent();
 450 }
 451
 452 static void nss_test_errors(void)
 453 {
 454         struct passwd *pwd;
 455         struct group *grp;
 456
 457         pwd = getpwnam("nosuchname");
 458         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 459                 total_errors++;
 460                 printf("ERROR Non existent user gave error %d\n", last_error);
 461         }
 462
 463         pwd = getpwuid(0xFFF0);
 464         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 465                 total_errors++;
 466                 printf("ERROR Non existent uid gave error %d\n", last_error);
 467         }
 468
 469         grp = getgrnam("nosuchgroup");
 470         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 471                 total_errors++;
 472                 printf("ERROR Non existent group gave error %d\n", last_error);
 473         }
 474
 475         grp = getgrgid(0xFFF0);
 476         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 477                 total_errors++;
 478                 printf("ERROR Non existent gid gave error %d\n", last_error);
 479         }
 480 }
 481
 482  int main(int argc, char *argv[])
 483 {
 484         if (argc > 1) so_path = argv[1];
 485         if (argc > 2) nss_name = argv[2];
 486
 487         nss_test_users();
 488         nss_test_groups();
 489         nss_test_errors();
 490
 491         printf("total_errors=%d\n", total_errors);
 492
 493         return total_errors;
 494 }