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           *groups = va_arg(ap, gid_t *);
 219         int              maxgrp = va_arg(ap, int);
 220         int             *groupc = va_arg(ap, int *);
 221
 222         struct winbindd_request request;
 223         struct winbindd_response response;
 224         gid_t   *wblistv;
 225         int     wblistc, i, isdup, dupc;
 226
 227         ZERO_STRUCT(request);
 228         ZERO_STRUCT(response);
 229         strncpy(request.data.username, uname,
 230                                 sizeof(request.data.username) - 1);
 231         i = winbindd_request_response(WINBINDD_GETGROUPS, &request, &response);
 232         if (i != NSS_STATUS_SUCCESS)
 233                 return NS_NOTFOUND;
 234         wblistv = (gid_t *)response.extra_data.data;
 235         wblistc = response.data.num_entries;
 236
 237         for (i = 0; i < wblistc; i++) {                 /* add winbind gids */
 238                 isdup = 0;                              /* skip duplicates */
 239                 for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
 240                         if (groups[dupc] == wblistv[i]) {
 241                                 isdup = 1;
 242                                 break;
 243                         }
 244                 }
 245                 if (isdup)
 246                         continue;
 247                 if (*groupc < maxgrp)                   /* add this gid */
 248                         groups[*groupc] = wblistv[i];
 249                 else
 250                         *result = -1;
 251                 (*groupc)++;
 252         }
 253         SAFE_FREE(wblistv);
 254         return NS_NOTFOUND;
 255 }
 256
 257
 258 /*
 259         passwd functions
 260         ----------------
 261 */
 262
 263 static struct passwd    _winbind_passwd;
 264 static char             _winbind_passwdbuf[1024];
 265
 266 int
 267 netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
 268 {
 269         int     rv;
 270
 271         rv = _nss_winbind_endpwent();
 272         return rv;
 273 }
 274
 275 int
 276 netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
 277 {
 278         int     rv;
 279
 280         rv = _nss_winbind_setpwent();
 281         return rv;
 282 }
 283
 284 int
 285 netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
 286 {
 287         struct passwd  **retval = va_arg(ap, struct passwd **);
 288
 289         int     rv, rerrno;
 290
 291         *retval = NULL;
 292
 293         rv = _nss_winbind_getpwent_r(&_winbind_passwd,
 294             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 295         if (rv == NS_SUCCESS)
 296                 *retval = &_winbind_passwd;
 297         return rv;
 298 }
 299
 300 int
 301 netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
 302 {
 303         int             *retval = va_arg(ap, int *);
 304         struct passwd   *pw     = va_arg(ap, struct passwd *);
 305         char            *buffer = va_arg(ap, char *);
 306         size_t           buflen = va_arg(ap, size_t);
 307         struct passwd  **result = va_arg(ap, struct passwd **);
 308
 309         int     rv, rerrno;
 310
 311         *result = NULL;
 312         rerrno = 0;
 313
 314         rv = _nss_winbind_getpwent_r(pw, buffer, buflen, &rerrno);
 315         if (rv == NS_SUCCESS)
 316                 *result = pw;
 317         else
 318                 *retval = rerrno;
 319         return rv;
 320 }
 321
 322 int
 323 netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
 324 {
 325         struct passwd  **retval = va_arg(ap, struct passwd **);
 326         const char      *name   = va_arg(ap, const char *);
 327
 328         int     rv, rerrno;
 329
 330         *retval = NULL;
 331         rv = _nss_winbind_getpwnam_r(name, &_winbind_passwd,
 332             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 333         if (rv == NS_SUCCESS)
 334                 *retval = &_winbind_passwd;
 335         return rv;
 336 }
 337
 338 int
 339 netbsdwinbind_getpwnam_r(void *nsrv, void *nscb, va_list ap)
 340 {
 341         int             *retval = va_arg(ap, int *);
 342         const char      *name   = va_arg(ap, const char *);
 343         struct passwd   *pw     = va_arg(ap, struct passwd *);
 344         char            *buffer = va_arg(ap, char *);
 345         size_t           buflen = va_arg(ap, size_t);
 346         struct passwd  **result = va_arg(ap, struct passwd **);
 347
 348         int     rv, rerrno;
 349
 350         *result = NULL;
 351         rerrno = 0;
 352
 353         rv = _nss_winbind_getpwnam_r(name, pw, buffer, buflen, &rerrno);
 354         if (rv == NS_SUCCESS)
 355                 *result = pw;
 356         else
 357                 *retval = rerrno;
 358         return rv;
 359 }
 360
 361 int
 362 netbsdwinbind_getpwuid(void *nsrv, void *nscb, va_list ap)
 363 {
 364         struct passwd  **retval = va_arg(ap, struct passwd **);
 365         uid_t            uid    = va_arg(ap, uid_t);
 366
 367         int     rv, rerrno;
 368
 369         *retval = NULL;
 370         rv = _nss_winbind_getpwuid_r(uid, &_winbind_passwd,
 371             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 372         if (rv == NS_SUCCESS)
 373                 *retval = &_winbind_passwd;
 374         return rv;
 375 }
 376
 377 int
 378 netbsdwinbind_getpwuid_r(void *nsrv, void *nscb, va_list ap)
 379 {
 380         int             *retval = va_arg(ap, int *);
 381         uid_t            uid    = va_arg(ap, uid_t);
 382         struct passwd   *pw     = va_arg(ap, struct passwd *);
 383         char            *buffer = va_arg(ap, char *);
 384         size_t           buflen = va_arg(ap, size_t);
 385         struct passwd  **result = va_arg(ap, struct passwd **);
 386
 387         int     rv, rerrno;
 388
 389         *result = NULL;
 390         rerrno = 0;
 391
 392         rv = _nss_winbind_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
 393         if (rv == NS_SUCCESS)
 394                 *result = pw;
 395         else
 396                 *retval = rerrno;
 397         return rv;
 398 }
 399
 400
 401 /*
 402         nsswitch module setup
 403         ---------------------
 404 */
 405
 406
 407 static ns_mtab winbind_methods[] = {
 408
 409 { NSDB_GROUP, "endgrent",       netbsdwinbind_endgrent,         NULL },
 410 { NSDB_GROUP, "getgrent",       netbsdwinbind_getgrent,         NULL },
 411 { NSDB_GROUP, "getgrent_r",     netbsdwinbind_getgrent_r,       NULL },
 412 { NSDB_GROUP, "getgrgid",       netbsdwinbind_getgrgid,         NULL },
 413 { NSDB_GROUP, "getgrgid_r",     netbsdwinbind_getgrgid_r,       NULL },
 414 { NSDB_GROUP, "getgrnam",       netbsdwinbind_getgrnam,         NULL },
 415 { NSDB_GROUP, "getgrnam_r",     netbsdwinbind_getgrnam_r,       NULL },
 416 { NSDB_GROUP, "setgrent",       netbsdwinbind_setgrent,         NULL },
 417 { NSDB_GROUP, "setgroupent",    netbsdwinbind_setgrent,         NULL },
 418 { NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },
 419
 420 { NSDB_PASSWD, "endpwent",      netbsdwinbind_endpwent,         NULL },
 421 { NSDB_PASSWD, "getpwent",      netbsdwinbind_getpwent,         NULL },
 422 { NSDB_PASSWD, "getpwent_r",    netbsdwinbind_getpwent_r,       NULL },
 423 { NSDB_PASSWD, "getpwnam",      netbsdwinbind_getpwnam,         NULL },
 424 { NSDB_PASSWD, "getpwnam_r",    netbsdwinbind_getpwnam_r,       NULL },
 425 { NSDB_PASSWD, "getpwuid",      netbsdwinbind_getpwuid,         NULL },
 426 { NSDB_PASSWD, "getpwuid_r",    netbsdwinbind_getpwuid_r,       NULL },
 427 { NSDB_PASSWD, "setpassent",    netbsdwinbind_setpwent,         NULL },
 428 { NSDB_PASSWD, "setpwent",      netbsdwinbind_setpwent,         NULL },
 429
 430 };
 431
 432 ns_mtab *
 433 nss_module_register(const char *source, unsigned int *mtabsize,
 434     nss_module_unregister_fn *unreg)
 435 {
 436         *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
 437         *unreg = NULL;
 438         return (winbind_methods);
 439 }
 440
 441 #endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */