nsswitch/winbind_nss_netbsd.c

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/*
   Unix SMB/CIFS implementation.

   NetBSD loadable authentication module, providing identification
   routines against Samba winbind/Windows NT Domain

   Copyright (C) Luke Mewburn 2004-2005

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA  02111-1307, USA.
*/

#include <sys/param.h>

#include "winbind_client.h"

#include <stdarg.h>
#include <syslog.h>

        /* dynamic nsswitch with "new" getpw* nsdispatch API available */
#if defined(NSS_MODULE_INTERFACE_VERSION) && defined(HAVE_GETPWENT_R)

/*
        group functions
        ---------------
*/

static struct group     _winbind_group;
static char             _winbind_groupbuf[1024];

int
netbsdwinbind_endgrent(void *nsrv, void *nscb, va_list ap)
{
        int     rv;

        rv = _nss_winbind_endgrent();
        return rv;
}

int
netbsdwinbind_setgrent(void *nsrv, void *nscb, va_list ap)
{
        int     rv;

        rv = _nss_winbind_setgrent();
        return rv;
}

int
netbsdwinbind_getgrent(void *nsrv, void *nscb, va_list ap)
{
        struct group   **retval = va_arg(ap, struct group **);

        int     rv, rerrno;

        *retval = NULL;
        rv = _nss_winbind_getgrent_r(&_winbind_group,
            _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_group;
        return rv;
}

int
netbsdwinbind_getgrent_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        struct group    *grp    = va_arg(ap, struct group *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct group   **result = va_arg(ap, struct group **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getgrent_r(grp, buffer, buflen, rerrno);
        if (rv == NS_SUCCESS)
                *result = grp;
        else
                *retval = rerrno;
        return rv;
}

int
netbsdwinbind_getgrgid(void *nsrv, void *nscb, va_list ap)
{
        struct group   **retval = va_arg(ap, struct group **);
        gid_t            gid    = va_arg(ap, gid_t);

        int     rv, rerrno;

        *retval = NULL;
        rv = _nss_winbind_getgrgid_r(gid, &_winbind_group,
            _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_group;
        return rv;
}

int
netbsdwinbind_getgrgid_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        gid_t            gid    = va_arg(ap, gid_t);
        struct group    *grp    = va_arg(ap, struct group *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct group   **result = va_arg(ap, struct group **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getgrgid_r(gid, grp, buffer, buflen, &rerrno);
        if (rv == NS_SUCCESS)
                *result = grp;
        else
                *retval = rerrno;
        return rv;
}

int
netbsdwinbind_getgrnam(void *nsrv, void *nscb, va_list ap)
{
        struct group   **retval = va_arg(ap, struct group **);
        const char      *name   = va_arg(ap, const char *);

        int     rv, rerrno;

        *retval = NULL;
        rv = _nss_winbind_getgrnam_r(name, &_winbind_group,
            _winbind_groupbuf, sizeof(_winbind_groupbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_group;
        return rv;
}

int
netbsdwinbind_getgrnam_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        const char      *name   = va_arg(ap, const char *);
        struct group    *grp    = va_arg(ap, struct group *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct group   **result = va_arg(ap, struct group **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getgrnam_r(name, grp, buffer, buflen, &rerrno);
        if (rv == NS_SUCCESS)
                *result = grp;
        else
                *retval = rerrno;
        return rv;
}

int
netbsdwinbind_getgroupmembership(void *nsrv, void *nscb, va_list ap)
{
        int             *result = va_arg(ap, int *);
        const char      *uname  = va_arg(ap, const char *);
        gid_t            agroup = va_arg(ap, gid_t);
        gid_t           *groups = va_arg(ap, gid_t *);
        int              maxgrp = va_arg(ap, int);
        int             *groupc = va_arg(ap, int *);

        struct winbindd_request request;
        struct winbindd_response response;
        gid_t   *wblistv;
        int     wblistc, i, isdup, dupc;

        ZERO_STRUCT(request);
        ZERO_STRUCT(response);
        strncpy(request.data.username, uname,
                                sizeof(request.data.username) - 1);
        i = winbindd_request_response(WINBINDD_GETGROUPS, &request, &response);
        if (i != NSS_STATUS_SUCCESS)
                return NS_NOTFOUND;
        wblistv = (gid_t *)response.extra_data.data;
        wblistc = response.data.num_entries;

        for (i = 0; i < wblistc; i++) {                 /* add winbind gids */
                isdup = 0;                              /* skip duplicates */
                for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
                        if (groups[dupc] == wblistv[i]) {
                                isdup = 1;
                                break;
                        }
                }
                if (isdup)
                        continue;
                if (*groupc < maxgrp)                   /* add this gid */
                        groups[*groupc] = wblistv[i];
                else
                        *result = -1;
                (*groupc)++;
        }
        SAFE_FREE(wblistv);
        return NS_NOTFOUND;
}


/*
        passwd functions
        ----------------
*/

static struct passwd    _winbind_passwd;
static char             _winbind_passwdbuf[1024];

int
netbsdwinbind_endpwent(void *nsrv, void *nscb, va_list ap)
{
        int     rv;

        rv = _nss_winbind_endpwent();
        return rv;
}

int
netbsdwinbind_setpwent(void *nsrv, void *nscb, va_list ap)
{
        int     rv;

        rv = _nss_winbind_setpwent();
        return rv;
}

int
netbsdwinbind_getpwent(void *nsrv, void *nscb, va_list ap)
{
        struct passwd  **retval = va_arg(ap, struct passwd **);

        int     rv, rerrno;

        *retval = NULL;

        rv = _nss_winbind_getpwent_r(&_winbind_passwd,
            _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_passwd;
        return rv;
}

int
netbsdwinbind_getpwent_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        struct passwd   *pw     = va_arg(ap, struct passwd *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct passwd  **result = va_arg(ap, struct passwd **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getpwent_r(pw, buffer, buflen, rerrno);
        if (rv == NS_SUCCESS)
                *result = pw;
        else
                *retval = rerrno;
        return rv;
}

int
netbsdwinbind_getpwnam(void *nsrv, void *nscb, va_list ap)
{
        struct passwd  **retval = va_arg(ap, struct passwd **);
        const char      *name   = va_arg(ap, const char *);

        int     rv, rerrno;

        *retval = NULL;
        rv = _nss_winbind_getpwnam_r(name, &_winbind_passwd,
            _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_passwd;
        return rv;
}

int
netbsdwinbind_getpwnam_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        const char      *name   = va_arg(ap, const char *);
        struct passwd   *pw     = va_arg(ap, struct passwd *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct passwd  **result = va_arg(ap, struct passwd **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getpwnam_r(name, pw, buffer, buflen, &rerrno);
        if (rv == NS_SUCCESS)
                *result = pw;
        else
                *retval = rerrno;
        return rv;
}

int
netbsdwinbind_getpwuid(void *nsrv, void *nscb, va_list ap)
{
        struct passwd  **retval = va_arg(ap, struct passwd **);
        uid_t            uid    = va_arg(ap, uid_t);

        int     rv, rerrno;

        *retval = NULL;
        rv = _nss_winbind_getpwuid_r(uid, &_winbind_passwd,
            _winbind_passwdbuf, sizeof(_winbind_passwdbuf), &rerrno);
        if (rv == NS_SUCCESS)
                *retval = &_winbind_passwd;
        return rv;
}

int
netbsdwinbind_getpwuid_r(void *nsrv, void *nscb, va_list ap)
{
        int             *retval = va_arg(ap, int *);
        uid_t            uid    = va_arg(ap, uid_t);
        struct passwd   *pw     = va_arg(ap, struct passwd *);
        char            *buffer = va_arg(ap, char *);
        size_t           buflen = va_arg(ap, size_t);
        struct passwd  **result = va_arg(ap, struct passwd **);

        int     rv, rerrno;

        *result = NULL;
        rerrno = 0;

        rv = _nss_winbind_getpwuid_r(uid, pw, buffer, buflen, &rerrno);
        if (rv == NS_SUCCESS)
                *result = pw;
        else
                *retval = rerrno;
        return rv;
}


/*
        nsswitch module setup
        ---------------------
*/


static ns_mtab winbind_methods[] = {

{ NSDB_GROUP, "endgrent",       netbsdwinbind_endgrent,         NULL },
{ NSDB_GROUP, "getgrent",       netbsdwinbind_getgrent,         NULL },
{ NSDB_GROUP, "getgrent_r",     netbsdwinbind_getgrent_r,       NULL },
{ NSDB_GROUP, "getgrgid",       netbsdwinbind_getgrgid,         NULL },
{ NSDB_GROUP, "getgrgid_r",     netbsdwinbind_getgrgid_r,       NULL },
{ NSDB_GROUP, "getgrnam",       netbsdwinbind_getgrnam,         NULL },
{ NSDB_GROUP, "getgrnam_r",     netbsdwinbind_getgrnam_r,       NULL },
{ NSDB_GROUP, "setgrent",       netbsdwinbind_setgrent,         NULL },
{ NSDB_GROUP, "setgroupent",    netbsdwinbind_setgrent,         NULL },
{ NSDB_GROUP, "getgroupmembership", netbsdwinbind_getgroupmembership, NULL },

{ NSDB_PASSWD, "endpwent",      netbsdwinbind_endpwent,         NULL },
{ NSDB_PASSWD, "getpwent",      netbsdwinbind_getpwent,         NULL },
{ NSDB_PASSWD, "getpwent_r",    netbsdwinbind_getpwent_r,       NULL },
{ NSDB_PASSWD, "getpwnam",      netbsdwinbind_getpwnam,         NULL },
{ NSDB_PASSWD, "getpwnam_r",    netbsdwinbind_getpwnam_r,       NULL },
{ NSDB_PASSWD, "getpwuid",      netbsdwinbind_getpwuid,         NULL },
{ NSDB_PASSWD, "getpwuid_r",    netbsdwinbind_getpwuid_r,       NULL },
{ NSDB_PASSWD, "setpassent",    netbsdwinbind_setpwent,         NULL },
{ NSDB_PASSWD, "setpwent",      netbsdwinbind_setpwent,         NULL },

};

ns_mtab *
nss_module_register(const char *source, unsigned int *mtabsize,
    nss_module_unregister_fn *unreg)
{
        *mtabsize = sizeof(winbind_methods)/sizeof(winbind_methods[0]);
        *unreg = NULL;
        return (winbind_methods);
}

#endif /* NSS_MODULE_INTERFACE_VERSION && HAVE_GETPWENT_R */

---