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 int
  42 netbsdwinbind_endgrent(void *nsrv, void *nscb, va_list ap)
  43 {
  44         int     rv;
  45
  46         rv = _nss_winbind_endgrent();
  47         return rv;
  48 }
  49
  50 int
  51 netbsdwinbind_setgrent(void *nsrv, void *nscb, va_list ap)
  52 {
  53         int     rv;
  54
  55         rv = _nss_winbind_setgrent();
  56         return rv;
  57 }
  58
  59 int
  60 netbsdwinbind_getgrent(void *nsrv, void *nscb, va_list ap)
  61 {
  62         struct group   **retval = va_arg(ap, struct group **);
  63
  64         int     rv, rerrno;
  65
  66         *retval = NULL;
  67         rv = _nss_winbind_getgrent_r(&_winbind_group,
  68             _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
  69         if (rv == NS_SUCCESS)
  70                 *retval = &_winbind_group;
  71         return rv;
  72 }
  73
  74 int
  75 netbsdwinbind_getgrent_r(void *nsrv, void *nscb, va_list ap)
  76 {
  77         int             *retval = va_arg(ap, int *);
  78         struct group    *grp    = va_arg(ap, struct group *);
  79         char            *buffer = va_arg(ap, char *);
  80         size_t           buflen = va_arg(ap, size_t);
  81         struct group   **result = va_arg(ap, struct group **);
  82
  83         int     rv, rerrno;
  84
  85         *result = NULL;
  86         rerrno = 0;
  87
  88         rv = _nss_winbind_getgrent_r(grp, buffer, buflen, &rerrno);
  89         if (rv == NS_SUCCESS)
  90                 *result = grp;
  91         else
  92                 *retval = rerrno;
  93         return rv;
  94 }
  95
  96 int
  97 netbsdwinbind_getgrgid(void *nsrv, void *nscb, va_list ap)
  98 {
  99         struct group   **retval = va_arg(ap, struct group **);
 100         gid_t            gid    = va_arg(ap, gid_t);
 101
 102         int     rv, rerrno;
 103
 104         *retval = NULL;
 105         rv = _nss_winbind_getgrgid_r(gid, &_winbind_group,
 106             _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
 107         if (rv == NS_SUCCESS)
 108                 *retval = &_winbind_group;
 109         return rv;
 110 }
 111
 112 int
 113 netbsdwinbind_getgrgid_r(void *nsrv, void *nscb, va_list ap)
 114 {
 115         int             *retval = va_arg(ap, int *);
 116         gid_t            gid    = va_arg(ap, gid_t);
 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_getgrgid_r(gid, 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_getgrnam(void *nsrv, void *nscb, va_list ap)
 137 {
 138         struct group   **retval = va_arg(ap, struct group **);
 139         const char      *name   = va_arg(ap, const char *);
 140
 141         int     rv, rerrno;
 142
 143         *retval = NULL;
 144         rv = _nss_winbind_getgrnam_r(name, &_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_getgrnam_r(void *nsrv, void *nscb, va_list ap)
 153 {
 154         int             *retval = va_arg(ap, int *);
 155         const char      *name   = va_arg(ap, const char *);
 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_getgrnam_r(name, 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_getgroupmembership(void *nsrv, void *nscb, va_list ap)
 176 {
 177         int             *result = va_arg(ap, int *);
 178         const char      *uname  = va_arg(ap, const char *);
 179         gid_t           *groups = va_arg(ap, gid_t *);
 180         int              maxgrp = va_arg(ap, int);
 181         int             *groupc = va_arg(ap, int *);
 182
 183         struct winbindd_request request;
 184         struct winbindd_response response;
 185         gid_t   *wblistv;
 186         int     wblistc, i, isdup, dupc;
 187
 188         ZERO_STRUCT(request);
 189         ZERO_STRUCT(response);
 190         strncpy(request.data.username, uname,
 191                                 sizeof(request.data.username) - 1);
 192         i = winbindd_request_response(NULL, WINBINDD_GETGROUPS,
 193                                       &request, &response);
 194         if (i != NSS_STATUS_SUCCESS)
 195                 return NS_NOTFOUND;
 196         wblistv = (gid_t *)response.extra_data.data;
 197         wblistc = response.data.num_entries;
 198
 199         for (i = 0; i < wblistc; i++) {                 /* add winbind gids */
 200                 isdup = 0;                              /* skip duplicates */
 201                 for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
 202                         if (groups[dupc] == wblistv[i]) {
 203                                 isdup = 1;
 204                                 break;
 205                         }
 206                 }
 207                 if (isdup)
 208                         continue;
 209                 if (*groupc < maxgrp)                   /* add this gid */
 210                         groups[*groupc] = wblistv[i];
 211                 else
 212                         *result = -1;
 213                 (*groupc)++;
 214         }
 215         SAFE_FREE(wblistv);
 216         return NS_NOTFOUND;
 217 }
 218
 219
 220 /*
 221         passwd functions
 222         ----------------
 223 */
 224
 225 static struct passwd    _winbind_passwd;
 226 static char             _winbind_passwdbuf[1024];
 227
 228 int
 229 netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
 230 {
 231         int     rv;
 232
 233         rv = _nss_winbind_endpwent();
 234         return rv;
 235 }
 236
 237 int
 238 netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
 239 {
 240         int     rv;
 241
 242         rv = _nss_winbind_setpwent();
 243         return rv;
 244 }
 245
 246 int
 247 netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
 248 {
 249         struct passwd  **retval = va_arg(ap, struct passwd **);
 250
 251         int     rv, rerrno;
 252
 253         *retval = NULL;
 254
 255         rv = _nss_winbind_getpwent_r(&_winbind_passwd,
 256             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 257         if (rv == NS_SUCCESS)
 258                 *retval = &_winbind_passwd;
 259         return rv;
 260 }
 261
 262 int
 263 netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
 264 {
 265         int             *retval = va_arg(ap, int *);
 266         struct passwd   *pw     = va_arg(ap, struct passwd *);
 267         char            *buffer = va_arg(ap, char *);
 268         size_t           buflen = va_arg(ap, size_t);
 269         struct passwd  **result = va_arg(ap, struct passwd **);
 270
 271         int     rv, rerrno;
 272
 273         *result = NULL;
 274         rerrno = 0;
 275
 276         rv = _nss_winbind_getpwent_r(pw, buffer, buflen, &rerrno);
 277         if (rv == NS_SUCCESS)
 278                 *result = pw;
 279         else
 280                 *retval = rerrno;
 281         return rv;
 282 }
 283
 284 int
 285 netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
 286 {
 287         struct passwd  **retval = va_arg(ap, struct passwd **);
 288         const char      *name   = va_arg(ap, const char *);
 289
 290         int     rv, rerrno;
 291
 292         *retval = NULL;
 293         rv = _nss_winbind_getpwnam_r(name, &_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_getpwnam_r(void *nsrv, void *nscb, va_list ap)
 302 {
 303         int             *retval = va_arg(ap, int *);
 304         const char      *name   = va_arg(ap, const char *);
 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_getpwnam_r(name, 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_getpwuid(void *nsrv, void *nscb, va_list ap)
 325 {
 326         struct passwd  **retval = va_arg(ap, struct passwd **);
 327         uid_t            uid    = va_arg(ap, uid_t);
 328
 329         int     rv, rerrno;
 330
 331         *retval = NULL;
 332         rv = _nss_winbind_getpwuid_r(uid, &_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_getpwuid_r(void *nsrv, void *nscb, va_list ap)
 341 {
 342         int             *retval = va_arg(ap, int *);
 343         uid_t            uid    = va_arg(ap, uid_t);
 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_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
 355         if (rv == NS_SUCCESS)
 356                 *result = pw;
 357         else
 358                 *retval = rerrno;
 359         return rv;
 360 }
 361
 362
 363 /*
 364         nsswitch module setup
 365         ---------------------
 366 */
 367
 368
 369 static ns_mtab winbind_methods[] = {
 370
 371 { NSDB_GROUP, "endgrent",       netbsdwinbind_endgrent,         NULL },
 372 { NSDB_GROUP, "getgrent",       netbsdwinbind_getgrent,         NULL },
 373 { NSDB_GROUP, "getgrent_r",     netbsdwinbind_getgrent_r,       NULL },
 374 { NSDB_GROUP, "getgrgid",       netbsdwinbind_getgrgid,         NULL },
 375 { NSDB_GROUP, "getgrgid_r",     netbsdwinbind_getgrgid_r,       NULL },
 376 { NSDB_GROUP, "getgrnam",       netbsdwinbind_getgrnam,         NULL },
 377 { NSDB_GROUP, "getgrnam_r",     netbsdwinbind_getgrnam_r,       NULL },
 378 { NSDB_GROUP, "setgrent",       netbsdwinbind_setgrent,         NULL },
 379 { NSDB_GROUP, "setgroupent",    netbsdwinbind_setgrent,         NULL },
 380 { NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },
 381
 382 { NSDB_PASSWD, "endpwent",      netbsdwinbind_endpwent,         NULL },
 383 { NSDB_PASSWD, "getpwent",      netbsdwinbind_getpwent,         NULL },
 384 { NSDB_PASSWD, "getpwent_r",    netbsdwinbind_getpwent_r,       NULL },
 385 { NSDB_PASSWD, "getpwnam",      netbsdwinbind_getpwnam,         NULL },
 386 { NSDB_PASSWD, "getpwnam_r",    netbsdwinbind_getpwnam_r,       NULL },
 387 { NSDB_PASSWD, "getpwuid",      netbsdwinbind_getpwuid,         NULL },
 388 { NSDB_PASSWD, "getpwuid_r",    netbsdwinbind_getpwuid_r,       NULL },
 389 { NSDB_PASSWD, "setpassent",    netbsdwinbind_setpwent,         NULL },
 390 { NSDB_PASSWD, "setpwent",      netbsdwinbind_setpwent,         NULL },
 391
 392 };
 393
 394 ns_mtab *
 395 nss_module_register(const char *source, unsigned int *mtabsize,
 396     nss_module_unregister_fn *unreg)
 397 {
 398         *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
 399         *unreg = NULL;
 400         return (winbind_methods);
 401 }
 402
 403 #endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */