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                 .wb_flags = WBFLAG_FROM_NSS,
 185         };
 186         struct winbindd_response response = {
 187                 .length = 0,
 188         };
 189         gid_t   *wblistv;
 190         int     wblistc, i, isdup, dupc;
 191
 192         strncpy(request.data.username, uname,
 193                                 sizeof(request.data.username) - 1);
 194         i = winbindd_request_response(NULL, WINBINDD_GETGROUPS,
 195                                       &request, &response);
 196         if (i != NSS_STATUS_SUCCESS)
 197                 return NS_NOTFOUND;
 198         wblistv = (gid_t *)response.extra_data.data;
 199         wblistc = response.data.num_entries;
 200
 201         for (i = 0; i < wblistc; i++) {                 /* add winbind gids */
 202                 isdup = 0;                              /* skip duplicates */
 203                 for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
 204                         if (groups[dupc] == wblistv[i]) {
 205                                 isdup = 1;
 206                                 break;
 207                         }
 208                 }
 209                 if (isdup)
 210                         continue;
 211                 if (*groupc < maxgrp)                   /* add this gid */
 212                         groups[*groupc] = wblistv[i];
 213                 else
 214                         *result = -1;
 215                 (*groupc)++;
 216         }
 217         SAFE_FREE(wblistv);
 218         return NS_NOTFOUND;
 219 }
 220
 221
 222 /*
 223         passwd functions
 224         ----------------
 225 */
 226
 227 static struct passwd    _winbind_passwd;
 228 static char             _winbind_passwdbuf[1024];
 229
 230 int
 231 netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
 232 {
 233         int     rv;
 234
 235         rv = _nss_winbind_endpwent();
 236         return rv;
 237 }
 238
 239 int
 240 netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
 241 {
 242         int     rv;
 243
 244         rv = _nss_winbind_setpwent();
 245         return rv;
 246 }
 247
 248 int
 249 netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
 250 {
 251         struct passwd  **retval = va_arg(ap, struct passwd **);
 252
 253         int     rv, rerrno;
 254
 255         *retval = NULL;
 256
 257         rv = _nss_winbind_getpwent_r(&_winbind_passwd,
 258             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 259         if (rv == NS_SUCCESS)
 260                 *retval = &_winbind_passwd;
 261         return rv;
 262 }
 263
 264 int
 265 netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
 266 {
 267         int             *retval = va_arg(ap, int *);
 268         struct passwd   *pw     = va_arg(ap, struct passwd *);
 269         char            *buffer = va_arg(ap, char *);
 270         size_t           buflen = va_arg(ap, size_t);
 271         struct passwd  **result = va_arg(ap, struct passwd **);
 272
 273         int     rv, rerrno;
 274
 275         *result = NULL;
 276         rerrno = 0;
 277
 278         rv = _nss_winbind_getpwent_r(pw, buffer, buflen, &rerrno);
 279         if (rv == NS_SUCCESS)
 280                 *result = pw;
 281         else
 282                 *retval = rerrno;
 283         return rv;
 284 }
 285
 286 int
 287 netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
 288 {
 289         struct passwd  **retval = va_arg(ap, struct passwd **);
 290         const char      *name   = va_arg(ap, const char *);
 291
 292         int     rv, rerrno;
 293
 294         *retval = NULL;
 295         rv = _nss_winbind_getpwnam_r(name, &_winbind_passwd,
 296             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 297         if (rv == NS_SUCCESS)
 298                 *retval = &_winbind_passwd;
 299         return rv;
 300 }
 301
 302 int
 303 netbsdwinbind_getpwnam_r(void *nsrv, void *nscb, va_list ap)
 304 {
 305         int             *retval = va_arg(ap, int *);
 306         const char      *name   = va_arg(ap, const char *);
 307         struct passwd   *pw     = va_arg(ap, struct passwd *);
 308         char            *buffer = va_arg(ap, char *);
 309         size_t           buflen = va_arg(ap, size_t);
 310         struct passwd  **result = va_arg(ap, struct passwd **);
 311
 312         int     rv, rerrno;
 313
 314         *result = NULL;
 315         rerrno = 0;
 316
 317         rv = _nss_winbind_getpwnam_r(name, pw, buffer, buflen, &rerrno);
 318         if (rv == NS_SUCCESS)
 319                 *result = pw;
 320         else
 321                 *retval = rerrno;
 322         return rv;
 323 }
 324
 325 int
 326 netbsdwinbind_getpwuid(void *nsrv, void *nscb, va_list ap)
 327 {
 328         struct passwd  **retval = va_arg(ap, struct passwd **);
 329         uid_t            uid    = va_arg(ap, uid_t);
 330
 331         int     rv, rerrno;
 332
 333         *retval = NULL;
 334         rv = _nss_winbind_getpwuid_r(uid, &_winbind_passwd,
 335             _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
 336         if (rv == NS_SUCCESS)
 337                 *retval = &_winbind_passwd;
 338         return rv;
 339 }
 340
 341 int
 342 netbsdwinbind_getpwuid_r(void *nsrv, void *nscb, va_list ap)
 343 {
 344         int             *retval = va_arg(ap, int *);
 345         uid_t            uid    = va_arg(ap, uid_t);
 346         struct passwd   *pw     = va_arg(ap, struct passwd *);
 347         char            *buffer = va_arg(ap, char *);
 348         size_t           buflen = va_arg(ap, size_t);
 349         struct passwd  **result = va_arg(ap, struct passwd **);
 350
 351         int     rv, rerrno;
 352
 353         *result = NULL;
 354         rerrno = 0;
 355
 356         rv = _nss_winbind_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
 357         if (rv == NS_SUCCESS)
 358                 *result = pw;
 359         else
 360                 *retval = rerrno;
 361         return rv;
 362 }
 363
 364
 365 /*
 366         nsswitch module setup
 367         ---------------------
 368 */
 369
 370
 371 static ns_mtab winbind_methods[] = {
 372
 373 { NSDB_GROUP, "endgrent",       netbsdwinbind_endgrent,         NULL },
 374 { NSDB_GROUP, "getgrent",       netbsdwinbind_getgrent,         NULL },
 375 { NSDB_GROUP, "getgrent_r",     netbsdwinbind_getgrent_r,       NULL },
 376 { NSDB_GROUP, "getgrgid",       netbsdwinbind_getgrgid,         NULL },
 377 { NSDB_GROUP, "getgrgid_r",     netbsdwinbind_getgrgid_r,       NULL },
 378 { NSDB_GROUP, "getgrnam",       netbsdwinbind_getgrnam,         NULL },
 379 { NSDB_GROUP, "getgrnam_r",     netbsdwinbind_getgrnam_r,       NULL },
 380 { NSDB_GROUP, "setgrent",       netbsdwinbind_setgrent,         NULL },
 381 { NSDB_GROUP, "setgroupent",    netbsdwinbind_setgrent,         NULL },
 382 { NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },
 383
 384 { NSDB_PASSWD, "endpwent",      netbsdwinbind_endpwent,         NULL },
 385 { NSDB_PASSWD, "getpwent",      netbsdwinbind_getpwent,         NULL },
 386 { NSDB_PASSWD, "getpwent_r",    netbsdwinbind_getpwent_r,       NULL },
 387 { NSDB_PASSWD, "getpwnam",      netbsdwinbind_getpwnam,         NULL },
 388 { NSDB_PASSWD, "getpwnam_r",    netbsdwinbind_getpwnam_r,       NULL },
 389 { NSDB_PASSWD, "getpwuid",      netbsdwinbind_getpwuid,         NULL },
 390 { NSDB_PASSWD, "getpwuid_r",    netbsdwinbind_getpwuid_r,       NULL },
 391 { NSDB_PASSWD, "setpassent",    netbsdwinbind_setpwent,         NULL },
 392 { NSDB_PASSWD, "setpwent",      netbsdwinbind_setpwent,         NULL },
 393
 394 };
 395
 396 ns_mtab *
 397 nss_module_register(const char *source, unsigned int *mtabsize,
 398     nss_module_unregister_fn *unreg)
 399 {
 400         *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
 401         *unreg = NULL;
 402         return (winbind_methods);
 403 }
 404
 405 #endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */