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 "includes.h"
  22 #include "nsswitch/nsstest.h"
  23
  24 #ifdef malloc
  25 #undef malloc
  26 #endif
  27 #ifdef realloc
  28 #undef realloc
  29 #endif
  30
  31 static const char *so_path = "/lib/libnss_winbind.so";
  32 static const char *nss_name = "winbind";
  33 static int nss_errno;
  34 static NSS_STATUS last_error;
  35 static int total_errors;
  36
  37 static void *find_fn(const char *name)
  38 {
  39         char *s;
  40         static void *h;
  41         void *res;
  42
  43         if (asprintf(&s, "_nss_%s_%s", nss_name, name) < 0) {
  44                 exit(1);
  45         }
  46
  47         if (!h) {
  48                 h = dlopen(so_path, RTLD_LAZY);
  49         }
  50         if (!h) {
  51                 printf("Can't open shared library %s\n", so_path);
  52                 exit(1);
  53         }
  54         res = dlsym(h, s);
  55         if (!res) {
  56                 printf("Can't find function %s\n", s);
  57                 total_errors++;
  58                 SAFE_FREE(s);
  59                 return NULL;
  60         }
  61         SAFE_FREE(s);
  62         return res;
  63 }
  64
  65 static void report_nss_error(const char *who, NSS_STATUS status)
  66 {
  67         last_error = status;
  68         total_errors++;
  69         printf("ERROR %s: NSS_STATUS=%d  %d (nss_errno=%d)\n",
  70                who, status, NSS_STATUS_SUCCESS, nss_errno);
  71 }
  72
  73 static struct passwd *nss_getpwent(void)
  74 {
  75         NSS_STATUS (*_nss_getpwent_r)(struct passwd *, char *,
  76                                       size_t , int *) =
  77                 (NSS_STATUS (*)(struct passwd *, char *,
  78                                 size_t, int *))find_fn("getpwent_r");
  79         static struct passwd pwd;
  80         static char buf[1000];
  81         NSS_STATUS status;
  82
  83         if (!_nss_getpwent_r)
  84                 return NULL;
  85
  86         status = _nss_getpwent_r(&pwd, buf, sizeof(buf), &nss_errno);
  87         if (status == NSS_STATUS_NOTFOUND) {
  88                 return NULL;
  89         }
  90         if (status != NSS_STATUS_SUCCESS) {
  91                 report_nss_error("getpwent", status);
  92                 return NULL;
  93         }
  94         return &pwd;
  95 }
  96
  97 static struct passwd *nss_getpwnam(const char *name)
  98 {
  99         NSS_STATUS (*_nss_getpwnam_r)(const char *, struct passwd *, char *,
 100                                       size_t , int *) =
 101                 (NSS_STATUS (*)(const char *, struct passwd *, char *,
 102                                 size_t, int *))find_fn("getpwnam_r");
 103         static struct passwd pwd;
 104         static char buf[1000];
 105         NSS_STATUS status;
 106
 107         if (!_nss_getpwnam_r)
 108                 return NULL;
 109
 110         status = _nss_getpwnam_r(name, &pwd, buf, sizeof(buf), &nss_errno);
 111         if (status == NSS_STATUS_NOTFOUND) {
 112                 return NULL;
 113         }
 114         if (status != NSS_STATUS_SUCCESS) {
 115                 report_nss_error("getpwnam", status);
 116                 return NULL;
 117         }
 118         return &pwd;
 119 }
 120
 121 static struct passwd *nss_getpwuid(uid_t uid)
 122 {
 123         NSS_STATUS (*_nss_getpwuid_r)(uid_t , struct passwd *, char *,
 124                                       size_t , int *) =
 125                 (NSS_STATUS (*)(uid_t, struct passwd *, char *,
 126                                 size_t, int *))find_fn("getpwuid_r");
 127         static struct passwd pwd;
 128         static char buf[1000];
 129         NSS_STATUS status;
 130
 131         if (!_nss_getpwuid_r)
 132                 return NULL;
 133
 134         status = _nss_getpwuid_r(uid, &pwd, buf, sizeof(buf), &nss_errno);
 135         if (status == NSS_STATUS_NOTFOUND) {
 136                 return NULL;
 137         }
 138         if (status != NSS_STATUS_SUCCESS) {
 139                 report_nss_error("getpwuid", status);
 140                 return NULL;
 141         }
 142         return &pwd;
 143 }
 144
 145 static void nss_setpwent(void)
 146 {
 147         NSS_STATUS (*_nss_setpwent)(void) =
 148                 (NSS_STATUS(*)(void))find_fn("setpwent");
 149         NSS_STATUS status;
 150
 151         if (!_nss_setpwent)
 152                 return;
 153
 154         status = _nss_setpwent();
 155         if (status != NSS_STATUS_SUCCESS) {
 156                 report_nss_error("setpwent", status);
 157         }
 158 }
 159
 160 static void nss_endpwent(void)
 161 {
 162         NSS_STATUS (*_nss_endpwent)(void) =
 163                 (NSS_STATUS (*)(void))find_fn("endpwent");
 164         NSS_STATUS status;
 165
 166         if (!_nss_endpwent)
 167                 return;
 168
 169         status = _nss_endpwent();
 170         if (status != NSS_STATUS_SUCCESS) {
 171                 report_nss_error("endpwent", status);
 172         }
 173 }
 174
 175
 176 static struct group *nss_getgrent(void)
 177 {
 178         NSS_STATUS (*_nss_getgrent_r)(struct group *, char *,
 179                                       size_t , int *) =
 180                 (NSS_STATUS (*)(struct group *, char *,
 181                                 size_t, int *))find_fn("getgrent_r");
 182         static struct group grp;
 183         static char *buf;
 184         static int buflen = 1024;
 185         NSS_STATUS status;
 186
 187         if (!_nss_getgrent_r)
 188                 return NULL;
 189
 190         if (!buf)
 191                 buf = (char *)malloc(buflen);
 192
 193 again:
 194         status = _nss_getgrent_r(&grp, buf, buflen, &nss_errno);
 195         if (status == NSS_STATUS_TRYAGAIN) {
 196                 buflen *= 2;
 197                 buf = (char *)realloc(buf, buflen);
 198                 if (!buf) {
 199                         return NULL;
 200                 }
 201                 goto again;
 202         }
 203         if (status == NSS_STATUS_NOTFOUND) {
 204                 SAFE_FREE(buf);
 205                 return NULL;
 206         }
 207         if (status != NSS_STATUS_SUCCESS) {
 208                 report_nss_error("getgrent", status);
 209                 SAFE_FREE(buf);
 210                 return NULL;
 211         }
 212         return &grp;
 213 }
 214
 215 static struct group *nss_getgrnam(const char *name)
 216 {
 217         NSS_STATUS (*_nss_getgrnam_r)(const char *, struct group *, char *,
 218                                       size_t , int *) =
 219                 (NSS_STATUS (*)(const char *, struct group *, char *,
 220                                 size_t, int *))find_fn("getgrnam_r");
 221         static struct group grp;
 222         static char *buf;
 223         static int buflen = 1000;
 224         NSS_STATUS status;
 225
 226         if (!_nss_getgrnam_r)
 227                 return NULL;
 228
 229         if (!buf)
 230                 buf = (char *)malloc(buflen);
 231 again:
 232         status = _nss_getgrnam_r(name, &grp, buf, buflen, &nss_errno);
 233         if (status == NSS_STATUS_TRYAGAIN) {
 234                 buflen *= 2;
 235                 buf = (char *)realloc(buf, buflen);
 236                 if (!buf) {
 237                         return NULL;
 238                 }
 239                 goto again;
 240         }
 241         if (status == NSS_STATUS_NOTFOUND) {
 242                 SAFE_FREE(buf);
 243                 return NULL;
 244         }
 245         if (status != NSS_STATUS_SUCCESS) {
 246                 report_nss_error("getgrnam", status);
 247                 SAFE_FREE(buf);
 248                 return NULL;
 249         }
 250         return &grp;
 251 }
 252
 253 static struct group *nss_getgrgid(gid_t gid)
 254 {
 255         NSS_STATUS (*_nss_getgrgid_r)(gid_t , struct group *, char *,
 256                                       size_t , int *) =
 257                 (NSS_STATUS (*)(gid_t, struct group *, char *,
 258                                 size_t, int *))find_fn("getgrgid_r");
 259         static struct group grp;
 260         static char *buf;
 261         static int buflen = 1000;
 262         NSS_STATUS status;
 263
 264         if (!_nss_getgrgid_r)
 265                 return NULL;
 266
 267         if (!buf)
 268                 buf = (char *)malloc(buflen);
 269
 270 again:
 271         status = _nss_getgrgid_r(gid, &grp, buf, buflen, &nss_errno);
 272         if (status == NSS_STATUS_TRYAGAIN) {
 273                 buflen *= 2;
 274                 buf = (char *)realloc(buf, buflen);
 275                 if (!buf) {
 276                         return NULL;
 277                 }
 278                 goto again;
 279         }
 280         if (status == NSS_STATUS_NOTFOUND) {
 281                 SAFE_FREE(buf);
 282                 return NULL;
 283         }
 284         if (status != NSS_STATUS_SUCCESS) {
 285                 report_nss_error("getgrgid", status);
 286                 SAFE_FREE(buf);
 287                 return NULL;
 288         }
 289         return &grp;
 290 }
 291
 292 static void nss_setgrent(void)
 293 {
 294         NSS_STATUS (*_nss_setgrent)(void) =
 295                 (NSS_STATUS (*)(void))find_fn("setgrent");
 296         NSS_STATUS status;
 297
 298         if (!_nss_setgrent)
 299                 return;
 300
 301         status = _nss_setgrent();
 302         if (status != NSS_STATUS_SUCCESS) {
 303                 report_nss_error("setgrent", status);
 304         }
 305 }
 306
 307 static void nss_endgrent(void)
 308 {
 309         NSS_STATUS (*_nss_endgrent)(void) =
 310                 (NSS_STATUS (*)(void))find_fn("endgrent");
 311         NSS_STATUS status;
 312
 313         if (!_nss_endgrent)
 314                 return;
 315
 316         status = _nss_endgrent();
 317         if (status != NSS_STATUS_SUCCESS) {
 318                 report_nss_error("endgrent", status);
 319         }
 320 }
 321
 322 static int nss_initgroups(char *user, gid_t group, gid_t **groups, long int *start, long int *size)
 323 {
 324         NSS_STATUS (*_nss_initgroups)(char *, gid_t , long int *,
 325                                       long int *, gid_t **, long int , int *) =
 326                 (NSS_STATUS (*)(char *, gid_t, long int *,
 327                                 long int *, gid_t **,
 328                                 long int, int *))find_fn("initgroups_dyn");
 329         NSS_STATUS status;
 330
 331         if (!_nss_initgroups)
 332                 return NSS_STATUS_UNAVAIL;
 333
 334         status = _nss_initgroups(user, group, start, size, groups, 0, &nss_errno);
 335         if (status != NSS_STATUS_SUCCESS) {
 336                 report_nss_error("initgroups", status);
 337         }
 338         return status;
 339 }
 340
 341 static void print_passwd(struct passwd *pwd)
 342 {
 343         printf("%s:%s:%lu:%lu:%s:%s:%s\n",
 344                pwd->pw_name,
 345                pwd->pw_passwd,
 346                (unsigned long)pwd->pw_uid,
 347                (unsigned long)pwd->pw_gid,
 348                pwd->pw_gecos,
 349                pwd->pw_dir,
 350                pwd->pw_shell);
 351 }
 352
 353 static void print_group(struct group *grp)
 354 {
 355         int i;
 356         printf("%s:%s:%lu:",
 357                grp->gr_name,
 358                grp->gr_passwd,
 359                (unsigned long)grp->gr_gid);
 360
 361         if (!grp->gr_mem[0]) {
 362                 printf("\n");
 363                 return;
 364         }
 365
 366         for (i=0; grp->gr_mem[i+1]; i++) {
 367                 printf("%s,", grp->gr_mem[i]);
 368         }
 369         printf("%s\n", grp->gr_mem[i]);
 370 }
 371
 372 static void nss_test_initgroups(char *name, gid_t gid)
 373 {
 374         long int size = 16;
 375         long int start = 1;
 376         gid_t *groups = NULL;
 377         int i;
 378         NSS_STATUS status;
 379
 380         groups = (gid_t *)malloc(size);
 381         groups[0] = gid;
 382
 383         status = nss_initgroups(name, gid, &groups, &start, &size);
 384         if (status == NSS_STATUS_UNAVAIL) {
 385                 printf("No initgroups fn\n");
 386                 return;
 387         }
 388
 389         for (i=0; i<start-1; i++) {
 390                 printf("%lu, ", (unsigned long)groups[i]);
 391         }
 392         printf("%lu\n", (unsigned long)groups[i]);
 393 }
 394
 395
 396 static void nss_test_users(void)
 397 {
 398         struct passwd *pwd;
 399
 400         nss_setpwent();
 401         /* loop over all users */
 402         while ((pwd = nss_getpwent())) {
 403                 printf("Testing user %s\n", pwd->pw_name);
 404                 printf("getpwent:   "); print_passwd(pwd);
 405                 pwd = nss_getpwuid(pwd->pw_uid);
 406                 if (!pwd) {
 407                         total_errors++;
 408                         printf("ERROR: can't getpwuid\n");
 409                         continue;
 410                 }
 411                 printf("getpwuid:   "); print_passwd(pwd);
 412                 pwd = nss_getpwnam(pwd->pw_name);
 413                 if (!pwd) {
 414                         total_errors++;
 415                         printf("ERROR: can't getpwnam\n");
 416                         continue;
 417                 }
 418                 printf("getpwnam:   "); print_passwd(pwd);
 419                 printf("initgroups: "); nss_test_initgroups(pwd->pw_name, pwd->pw_gid);
 420                 printf("\n");
 421         }
 422         nss_endpwent();
 423 }
 424
 425 static void nss_test_groups(void)
 426 {
 427         struct group *grp;
 428
 429         nss_setgrent();
 430         /* loop over all groups */
 431         while ((grp = nss_getgrent())) {
 432                 printf("Testing group %s\n", grp->gr_name);
 433                 printf("getgrent: "); print_group(grp);
 434                 grp = nss_getgrnam(grp->gr_name);
 435                 if (!grp) {
 436                         total_errors++;
 437                         printf("ERROR: can't getgrnam\n");
 438                         continue;
 439                 }
 440                 printf("getgrnam: "); print_group(grp);
 441                 grp = nss_getgrgid(grp->gr_gid);
 442                 if (!grp) {
 443                         total_errors++;
 444                         printf("ERROR: can't getgrgid\n");
 445                         continue;
 446                 }
 447                 printf("getgrgid: "); print_group(grp);
 448                 printf("\n");
 449         }
 450         nss_endgrent();
 451 }
 452
 453 static void nss_test_errors(void)
 454 {
 455         struct passwd *pwd;
 456         struct group *grp;
 457
 458         pwd = getpwnam("nosuchname");
 459         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 460                 total_errors++;
 461                 printf("ERROR Non existant user gave error %d\n", last_error);
 462         }
 463
 464         pwd = getpwuid(0xFFF0);
 465         if (pwd || last_error != NSS_STATUS_NOTFOUND) {
 466                 total_errors++;
 467                 printf("ERROR Non existant uid gave error %d\n", last_error);
 468         }
 469
 470         grp = getgrnam("nosuchgroup");
 471         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 472                 total_errors++;
 473                 printf("ERROR Non existant group gave error %d\n", last_error);
 474         }
 475
 476         grp = getgrgid(0xFFF0);
 477         if (grp || last_error != NSS_STATUS_NOTFOUND) {
 478                 total_errors++;
 479                 printf("ERROR Non existant gid gave error %d\n", last_error);
 480         }
 481 }
 482
 483  int main(int argc, char *argv[])
 484 {
 485         if (argc > 1) so_path = argv[1];
 486         if (argc > 2) nss_name = argv[2];
 487
 488         nss_test_users();
 489         nss_test_groups();
 490         nss_test_errors();
 491
 492         printf("total_errors=%d\n", total_errors);
 493
 494         return total_errors;
 495 }