nsswitch/winbind_nss_netbsd.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    NetBSD loadable authentication module, providing identification
   5    routines against Samba winbind/Windows NT Domain
   6
   7    Copyright (C) Luke Mewburn 2004-2005
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 3 of the License, or (at your option) any later version.
  13
  14    This library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Library General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public
  20    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23
  24 #include "winbind_client.h"
  25
  26 #include <sys/param.h>
  27 #include <stdarg.h>
  28 #include <syslog.h>
  29
  30         /* dynamic nsswitch with "new" getpw* nsdispatch API available */
  31 #if defined(NSS_MODULE_INTERFACE_VERSION) && defined(HAVE_GETPWENT_R)
  32
  33 /*
  34         group functions
  35         ---------------
  36 */
  37
  38 static struct group     _winbind_group;
  39 static char             _winbind_groupbuf[1024];
  40
  41 /*
  42  * We need a proper prototype for this :-)
  43  */
  44
  45 NSS_STATUS _nss_winbind_setpwent(void);
  46 NSS_STATUS _nss_winbind_endpwent(void);
  47 NSS_STATUS _nss_winbind_getpwent_r(struct passwd *result, char *buffer,
  48                                    size_t buflen, int *errnop);
  49 NSS_STATUS _nss_winbind_getpwuid_r(uid_t uid, struct passwd *result,
  50                                    char *buffer, size_t buflen, int *errnop);
  51 NSS_STATUS _nss_winbind_getpwnam_r(const char *name, struct passwd *result,
  52                                    char *buffer, size_t buflen, int *errnop);
  53 NSS_STATUS _nss_winbind_setgrent(void);
  54 NSS_STATUS _nss_winbind_endgrent(void);
  55 NSS_STATUS _nss_winbind_getgrent_r(struct group *result, char *buffer,
  56                                    size_t buflen, int *errnop);
  57 NSS_STATUS _nss_winbind_getgrlst_r(struct group *result, char *buffer,
  58                                    size_t buflen, int *errnop);
  59 NSS_STATUS _nss_winbind_getgrnam_r(const char *name, struct group *result,
  60                                    char *buffer, size_t buflen, int *errnop);
  61 NSS_STATUS _nss_winbind_getgrgid_r(gid_t gid, struct group *result, char *buffer,
  62                                    size_t buflen, int *errnop);
  63 NSS_STATUS _nss_winbind_initgroups_dyn(char *user, gid_t group, long int *start,
  64                                        long int *size, gid_t **groups,
  65                                        long int limit, int *errnop);
  66 NSS_STATUS _nss_winbind_getusersids(const char *user_sid, char **group_sids,
  67                                     int *num_groups, char *buffer, size_t buf_size,
  68                                     int *errnop);
  69 NSS_STATUS _nss_winbind_nametosid(const char *name, char **sid, char *buffer,
  70                                   size_t buflen, int *errnop);
  71 NSS_STATUS _nss_winbind_sidtoname(const char *sid, char **name, char *buffer,
  72                                   size_t buflen, int *errnop);
  73 NSS_STATUS _nss_winbind_sidtouid(const char *sid, uid_t *uid, int *errnop);
  74 NSS_STATUS _nss_winbind_sidtogid(const char *sid, gid_t *gid, int *errnop);
  75 NSS_STATUS _nss_winbind_uidtosid(uid_t uid, char **sid, char *buffer,
  76                                  size_t buflen, int *errnop);
  77 NSS_STATUS _nss_winbind_gidtosid(gid_t gid, char **sid, char *buffer,
  78                                  size_t buflen, int *errnop);
  79
  80 int
  81 netbsdwinbind_endgrent(void *nsrv, void *nscb, va_list ap)
  82 {
  83         int     rv;
  84
  85         rv = _nss_winbind_endgrent();
  86         return rv;
  87 }
  88
  89 int
  90 netbsdwinbind_setgrent(void *nsrv, void *nscb, va_list ap)
  91 {
  92         int     rv;
  93
  94         rv = _nss_winbind_setgrent();
  95         return rv;
  96 }
  97
  98 int
  99 netbsdwinbind_getgrent(void *nsrv, void *nscb, va_list ap)
 100 {
 101         struct group   **retval = va_arg(ap, struct group **);
 102
 103         int     rv, rerrno;
 104
 105         *retval = NULL;
 106         rv = _nss_winbind_getgrent_r(&_winbind_group,
 107             _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
 108         if (rv == NS_SUCCESS)
 109                 *retval = &_winbind_group;
 110         return rv;
 111 }
 112
 113 int
 114 netbsdwinbind_getgrent_r(void *nsrv, void *nscb, va_list ap)
 115 {
 116         int             *retval = va_arg(ap, int *);
 117         struct group    *grp    = va_arg(ap, struct group *);
 118         char            *buffer = va_arg(ap, char *);
 119         size_t           buflen = va_arg(ap, size_t);
 120         struct group   **result = va_arg(ap, struct group **);
 121
 122         int     rv, rerrno;
 123
 124         *result = NULL;
 125         rerrno = 0;
 126
 127         rv = _nss_winbind_getgrent_r(grp, buffer, buflen, rerrno);
 128         if (rv == NS_SUCCESS)
 129                 *result = grp;
 130         else
 131                 *retval = rerrno;
 132         return rv;
 133 }
 134
 135 int
 136 netbsdwinbind_getgrgid(void *nsrv, void *nscb, va_list ap)
 137 {
 138         struct group   **retval = va_arg(ap, struct group **);
 139         gid_t            gid    = va_arg(ap, gid_t);
 140
 141         int     rv, rerrno;
 142
 143         *retval = NULL;
 144         rv = _nss_winbind_getgrgid_r(gid, &_winbind_group,
 145             _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
 146         if (rv == NS_SUCCESS)
 147                 *retval = &_winbind_group;
 148         return rv;
 149 }
 150
 151 int
 152 netbsdwinbind_getgrgid_r(void *nsrv, void *nscb, va_list ap)
 153 {
 154         int             *retval = va_arg(ap, int *);
 155         gid_t            gid    = va_arg(ap, gid_t);
 156         struct group    *grp    = va_arg(ap, struct group *);
 157         char            *buffer = va_arg(ap, char *);
 158         size_t           buflen = va_arg(ap, size_t);
 159         struct group   **result = va_arg(ap, struct group **);
 160
 161         int     rv, rerrno;
 162
 163         *result = NULL;
 164         rerrno = 0;
 165
 166         rv = _nss_winbind_getgrgid_r(gid, grp, buffer, buflen, &rerrno);
 167         if (rv == NS_SUCCESS)
 168                 *result = grp;
 169         else
 170                 *retval = rerrno;
 171         return rv;
 172 }
 173
 174 int
 175 netbsdwinbind_getgrnam(void *nsrv, void *nscb, va_list ap)
 176 {
 177         struct group   **retval = va_arg(ap, struct group **);
 178         const char      *name   = va_arg(ap, const char *);
 179
 180         int     rv, rerrno;
 181
 182         *retval = NULL;
 183         rv = _nss_winbind_getgrnam_r(name, &_winbind_group,
 184             _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
 185         if (rv == NS_SUCCESS)
 186                 *retval = &_winbind_group;
 187         return rv;
 188 }
 189
 190 int
 191 netbsdwinbind_getgrnam_r(void *nsrv, void *nscb, va_list ap)
 192 {
 193         int             *retval = va_arg(ap, int *);
 194         const char      *name   = va_arg(ap, const char *);
 195         struct group    *grp    = va_arg(ap, struct group *);
 196         char            *buffer = va_arg(ap, char *);
 197         size_t           buflen = va_arg(ap, size_t);
 198         struct group   **result = va_arg(ap, struct group **);
 199
 200         int     rv, rerrno;
 201
 202         *result = NULL;
 203         rerrno = 0;
 204
 205         rv = _nss_winbind_getgrnam_r(name, grp, buffer, buflen, &rerrno);
 206         if (rv == NS_SUCCESS)
 207                 *result = grp;
 208         else
 209                 *retval = rerrno;
 210         return rv;
 211 }
 212
 213 int
 214 netbsdwinbind_getgroupmembership(void *nsrv, void *nscb, va_list ap)
 215 {
 216         int             *result = va_arg(ap, int *);
 217         const char      *uname  = va_arg(ap, const char *);
 218         gid_t            agroup = va_arg(ap, gid_t);
 219         gid_t           *groups = va_arg(ap, gid_t *);
 220         int              maxgrp = va_arg(ap, int);
 221         int             *groupc = va_arg(ap, int *);
 222
 223         struct winbindd_request request;
 224         struct winbindd_response response;
 225         gid_t   *wblistv;
 226         int     wblistc, i, isdup, dupc;
 227
 228         ZERO_STRUCT(request);
 229         ZERO_STRUCT(response);
 230         strncpy(request.data.username, uname,
 231                                 sizeof(request.data.username) - 1);
 232         i = winbindd_request_response(WINBINDD_GETGROUPS, &request, &response);
 233         if (i != NSS_STATUS_SUCCESS)
 234                 return NS_NOTFOUND;
 235         wblistv = (gid_t *)response.extra_data.data;
 236         wblistc = response.data.num_entries;
 237
 238         for (i = 0; i < wblistc; i++) {                 /* add winbind gids */
 239                 isdup = 0;                              /* skip duplicates */
 240                 for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
 241                         if (groups[dupc] == wblistv[i]) {
 242                                 isdup = 1;
 243                                 break;
 244                         }
 245                 }
 246                 if (isdup)
 247                         continue;
 248                 if (*groupc < maxgrp)                   /* add this gid */
 249                         groups[*groupc] = wblistv[i];
 250                 else
 251                         *result = -1;
 252                 (*groupc)++;
 253         }
 254         SAFE_FREE(wblistv);
 255         return NS_NOTFOUND;
 256 }
 257
 258
 259 /*
 260         passwd functions
 261         ----------------
 262 */
 263
 264 static struct passwd    _winbind_passwd;
 265 static char             _winbind_passwdbuf[1024];
 266
 267 int
 268 netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
 269 {
 270         int     rv;
 271
 272         rv = _nss_winbind_endpwent();
 273         return rv;
 274 }
 275
 276 int
 277 netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
 278 {
 279         int     rv;
 280
 281         rv = _nss_winbind_setpwent();
 282         return rv;
 283 }
 284
 285 int
 286 netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
 287 {
 288         struct passwd  **retval = va_arg(ap, struct passwd **);
 289
 290         int     rv, rerrno;
 291
 292         *retval = NULL;
 293
 294         rv = _nss_winbind_getpwent_r(&_winbind_passwd,
 295             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 296         if (rv == NS_SUCCESS)
 297                 *retval = &_winbind_passwd;
 298         return rv;
 299 }
 300
 301 int
 302 netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
 303 {
 304         int             *retval = va_arg(ap, int *);
 305         struct passwd   *pw     = va_arg(ap, struct passwd *);
 306         char            *buffer = va_arg(ap, char *);
 307         size_t           buflen = va_arg(ap, size_t);
 308         struct passwd  **result = va_arg(ap, struct passwd **);
 309
 310         int     rv, rerrno;
 311
 312         *result = NULL;
 313         rerrno = 0;
 314
 315         rv = _nss_winbind_getpwent_r(pw, buffer, buflen, rerrno);
 316         if (rv == NS_SUCCESS)
 317                 *result = pw;
 318         else
 319                 *retval = rerrno;
 320         return rv;
 321 }
 322
 323 int
 324 netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
 325 {
 326         struct passwd  **retval = va_arg(ap, struct passwd **);
 327         const char      *name   = va_arg(ap, const char *);
 328
 329         int     rv, rerrno;
 330
 331         *retval = NULL;
 332         rv = _nss_winbind_getpwnam_r(name, &_winbind_passwd,
 333             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 334         if (rv == NS_SUCCESS)
 335                 *retval = &_winbind_passwd;
 336         return rv;
 337 }
 338
 339 int
 340 netbsdwinbind_getpwnam_r(void *nsrv, void *nscb, va_list ap)
 341 {
 342         int             *retval = va_arg(ap, int *);
 343         const char      *name   = va_arg(ap, const char *);
 344         struct passwd   *pw     = va_arg(ap, struct passwd *);
 345         char            *buffer = va_arg(ap, char *);
 346         size_t           buflen = va_arg(ap, size_t);
 347         struct passwd  **result = va_arg(ap, struct passwd **);
 348
 349         int     rv, rerrno;
 350
 351         *result = NULL;
 352         rerrno = 0;
 353
 354         rv = _nss_winbind_getpwnam_r(name, pw, buffer, buflen, &rerrno);
 355         if (rv == NS_SUCCESS)
 356                 *result = pw;
 357         else
 358                 *retval = rerrno;
 359         return rv;
 360 }
 361
 362 int
 363 netbsdwinbind_getpwuid(void *nsrv, void *nscb, va_list ap)
 364 {
 365         struct passwd  **retval = va_arg(ap, struct passwd **);
 366         uid_t            uid    = va_arg(ap, uid_t);
 367
 368         int     rv, rerrno;
 369
 370         *retval = NULL;
 371         rv = _nss_winbind_getpwuid_r(uid, &_winbind_passwd,
 372             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 373         if (rv == NS_SUCCESS)
 374                 *retval = &_winbind_passwd;
 375         return rv;
 376 }
 377
 378 int
 379 netbsdwinbind_getpwuid_r(void *nsrv, void *nscb, va_list ap)
 380 {
 381         int             *retval = va_arg(ap, int *);
 382         uid_t            uid    = va_arg(ap, uid_t);
 383         struct passwd   *pw     = va_arg(ap, struct passwd *);
 384         char            *buffer = va_arg(ap, char *);
 385         size_t           buflen = va_arg(ap, size_t);
 386         struct passwd  **result = va_arg(ap, struct passwd **);
 387
 388         int     rv, rerrno;
 389
 390         *result = NULL;
 391         rerrno = 0;
 392
 393         rv = _nss_winbind_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
 394         if (rv == NS_SUCCESS)
 395                 *result = pw;
 396         else
 397                 *retval = rerrno;
 398         return rv;
 399 }
 400
 401
 402 /*
 403         nsswitch module setup
 404         ---------------------
 405 */
 406
 407
 408 static ns_mtab winbind_methods[] = {
 409
 410 { NSDB_GROUP, "endgrent",       netbsdwinbind_endgrent,         NULL },
 411 { NSDB_GROUP, "getgrent",       netbsdwinbind_getgrent,         NULL },
 412 { NSDB_GROUP, "getgrent_r",     netbsdwinbind_getgrent_r,       NULL },
 413 { NSDB_GROUP, "getgrgid",       netbsdwinbind_getgrgid,         NULL },
 414 { NSDB_GROUP, "getgrgid_r",     netbsdwinbind_getgrgid_r,       NULL },
 415 { NSDB_GROUP, "getgrnam",       netbsdwinbind_getgrnam,         NULL },
 416 { NSDB_GROUP, "getgrnam_r",     netbsdwinbind_getgrnam_r,       NULL },
 417 { NSDB_GROUP, "setgrent",       netbsdwinbind_setgrent,         NULL },
 418 { NSDB_GROUP, "setgroupent",    netbsdwinbind_setgrent,         NULL },
 419 { NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },
 420
 421 { NSDB_PASSWD, "endpwent",      netbsdwinbind_endpwent,         NULL },
 422 { NSDB_PASSWD, "getpwent",      netbsdwinbind_getpwent,         NULL },
 423 { NSDB_PASSWD, "getpwent_r",    netbsdwinbind_getpwent_r,       NULL },
 424 { NSDB_PASSWD, "getpwnam",      netbsdwinbind_getpwnam,         NULL },
 425 { NSDB_PASSWD, "getpwnam_r",    netbsdwinbind_getpwnam_r,       NULL },
 426 { NSDB_PASSWD, "getpwuid",      netbsdwinbind_getpwuid,         NULL },
 427 { NSDB_PASSWD, "getpwuid_r",    netbsdwinbind_getpwuid_r,       NULL },
 428 { NSDB_PASSWD, "setpassent",    netbsdwinbind_setpwent,         NULL },
 429 { NSDB_PASSWD, "setpwent",      netbsdwinbind_setpwent,         NULL },
 430
 431 };
 432
 433 ns_mtab *
 434 nss_module_register(const char *source, unsigned int *mtabsize,
 435     nss_module_unregister_fn *unreg)
 436 {
 437         *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
 438         *unreg = NULL;
 439         return (winbind_methods);
 440 }
 441
 442 #endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */