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#include <sys/param.h>
#include <netinet/in.h>
#include <errno.h>
#include <stdlib.h>
#include <pwd.h>
#include <grp.h>
#include <nss.h>
#include <nsswitch.h>
#include <netdb.h>
extern enum nss_status _nss_ldap_getgrent_r(struct group *, char *, size_t,
int *);
extern enum nss_status _nss_ldap_getgrnam_r(const char *, struct group *,
char *, size_t, int *);
extern enum nss_status _nss_ldap_getgrgid_r(gid_t gid, struct group *, char *,
size_t, int *);
extern enum nss_status _nss_ldap_setgrent(void);
extern enum nss_status _nss_ldap_endgrent(void);
extern enum nss_status _nss_ldap_initgroups_dyn(const char *, gid_t, long int *,
long int *, gid_t **, long int, int *);
extern enum nss_status _nss_ldap_getpwent_r(struct passwd *, char *, size_t,
int *);
extern enum nss_status _nss_ldap_getpwnam_r(const char *, struct passwd *,
char *, size_t, int *);
extern enum nss_status _nss_ldap_getpwuid_r(gid_t gid, struct passwd *, char *,
size_t, int *);
extern enum nss_status _nss_ldap_setpwent(void);
extern enum nss_status _nss_ldap_endpwent(void);
extern enum nss_status _nss_ldap_gethostbyname_r (const char *name, struct hostent * result,
char *buffer, size_t buflen, int *errnop,
int *h_errnop);
extern enum nss_status _nss_ldap_gethostbyname2_r (const char *name, int af, struct hostent * result,
char *buffer, size_t buflen, int *errnop,
int *h_errnop);
extern enum nss_status _nss_ldap_gethostbyaddr_r (struct in_addr * addr, int len, int type,
struct hostent * result, char *buffer,
size_t buflen, int *errnop, int *h_errnop);
struct __netgrent;
extern enum nss_status _nss_ldap_netgrp_load_result(struct __netgrent *result,
char **hostp, char **userp, char **domp);
extern enum nss_status _nss_ldap_getnetgrent_r(struct __netgrent *result, char *buffer,
size_t buflen, int *errnop);
extern enum nss_status _nss_ldap_setnetgrent(char *group, struct __netgrent *result);
extern enum nss_status _nss_ldap_endnetgrent(struct __netgrent *result);
NSS_METHOD_PROTOTYPE(__nss_compat_getgrnam_r);
NSS_METHOD_PROTOTYPE(__nss_compat_getgrgid_r);
NSS_METHOD_PROTOTYPE(__nss_compat_getgrent_r);
NSS_METHOD_PROTOTYPE(__nss_compat_setgrent);
NSS_METHOD_PROTOTYPE(__nss_compat_endgrent);
static NSS_METHOD_PROTOTYPE(__freebsd_getgroupmembership);
NSS_METHOD_PROTOTYPE(__nss_compat_getpwnam_r);
NSS_METHOD_PROTOTYPE(__nss_compat_getpwuid_r);
NSS_METHOD_PROTOTYPE(__nss_compat_getpwent_r);
NSS_METHOD_PROTOTYPE(__nss_compat_setpwent);
NSS_METHOD_PROTOTYPE(__nss_compat_endpwent);
NSS_METHOD_PROTOTYPE(__nss_compat_gethostbyname);
NSS_METHOD_PROTOTYPE(__nss_compat_gethostbyname2);
NSS_METHOD_PROTOTYPE(__nss_compat_gethostbyaddr);
static NSS_METHOD_PROTOTYPE(__nss_compat_getnetgrent_r);
static NSS_METHOD_PROTOTYPE(__nss_compat_setnetgrent);
static NSS_METHOD_PROTOTYPE(__nss_compat_endnetgrent);
static ns_mtab methods[] = {
{ NSDB_GROUP, "getgrnam_r", __nss_compat_getgrnam_r, _nss_ldap_getgrnam_r },
{ NSDB_GROUP, "getgrgid_r", __nss_compat_getgrgid_r, _nss_ldap_getgrgid_r },
{ NSDB_GROUP, "getgrent_r", __nss_compat_getgrent_r, _nss_ldap_getgrent_r },
{ NSDB_GROUP, "setgrent", __nss_compat_setgrent, _nss_ldap_setgrent },
{ NSDB_GROUP, "endgrent", __nss_compat_endgrent, _nss_ldap_endgrent },
{ NSDB_GROUP, "getgroupmembership", __freebsd_getgroupmembership, NULL },
{ NSDB_PASSWD, "getpwnam_r", __nss_compat_getpwnam_r, _nss_ldap_getpwnam_r },
{ NSDB_PASSWD, "getpwuid_r", __nss_compat_getpwuid_r, _nss_ldap_getpwuid_r },
{ NSDB_PASSWD, "getpwent_r", __nss_compat_getpwent_r, _nss_ldap_getpwent_r },
{ NSDB_PASSWD, "setpwent", __nss_compat_setpwent, _nss_ldap_setpwent },
{ NSDB_PASSWD, "endpwent", __nss_compat_endpwent, _nss_ldap_endpwent },
{ NSDB_HOSTS, "gethostbyname", __nss_compat_gethostbyname, _nss_ldap_gethostbyname_r },
{ NSDB_HOSTS, "gethostbyaddr", __nss_compat_gethostbyaddr, _nss_ldap_gethostbyaddr_r },
{ NSDB_HOSTS, "gethostbyname2", __nss_compat_gethostbyname2, _nss_ldap_gethostbyname2_r },
{ NSDB_NETGROUP, "getnetgrent_r", __nss_compat_getnetgrent_r, _nss_ldap_getnetgrent_r },
{ NSDB_NETGROUP, "setnetgrent", __nss_compat_setnetgrent, _nss_ldap_setnetgrent },
{ NSDB_NETGROUP, "endnetgrent", __nss_compat_endnetgrent, _nss_ldap_endnetgrent },
{ NSDB_GROUP_COMPAT, "getgrnam_r", __nss_compat_getgrnam_r, _nss_ldap_getgrnam_r },
{ NSDB_GROUP_COMPAT, "getgrgid_r", __nss_compat_getgrgid_r, _nss_ldap_getgrgid_r },
{ NSDB_GROUP_COMPAT, "getgrent_r", __nss_compat_getgrent_r, _nss_ldap_getgrent_r },
{ NSDB_GROUP_COMPAT, "setgrent", __nss_compat_setgrent, _nss_ldap_setgrent },
{ NSDB_GROUP_COMPAT, "endgrent", __nss_compat_endgrent, _nss_ldap_endgrent },
{ NSDB_PASSWD_COMPAT, "getpwnam_r", __nss_compat_getpwnam_r, _nss_ldap_getpwnam_r },
{ NSDB_PASSWD_COMPAT, "getpwuid_r", __nss_compat_getpwuid_r, _nss_ldap_getpwuid_r },
{ NSDB_PASSWD_COMPAT, "getpwent_r", __nss_compat_getpwent_r, _nss_ldap_getpwent_r },
{ NSDB_PASSWD_COMPAT, "setpwent", __nss_compat_setpwent, _nss_ldap_setpwent },
{ NSDB_PASSWD_COMPAT, "endpwent", __nss_compat_endpwent, _nss_ldap_endpwent },
};
ns_mtab *
nss_module_register(const char *source, unsigned int *mtabsize,
nss_module_unregister_fn *unreg)
{
*mtabsize = sizeof(methods)/sizeof(methods[0]);
*unreg = NULL;
return (methods);
}
int __nss_compat_gethostbyname(void *retval, void *mdata, va_list ap)
{
enum nss_status (*fn)(const char *, struct hostent *, char *, size_t, int *, int *);
const char *name;
struct hostent *result;
char buffer[1024];
size_t buflen = 1024;
int errnop;
int h_errnop;
int af;
enum nss_status status;
fn = mdata;
name = va_arg(ap, const char*);
af = va_arg(ap,int);
result = va_arg(ap,struct hostent *);
status = fn(name, result, buffer, buflen, &errnop, &h_errnop);
status = __nss_compat_result(status,errnop);
h_errno = h_errnop;
return (status);
}
int __nss_compat_gethostbyname2(void *retval, void *mdata, va_list ap)
{
enum nss_status (*fn)(const char *, struct hostent *, char *, size_t, int *, int *);
const char *name;
struct hostent *result;
char buffer[1024];
size_t buflen = 1024;
int errnop;
int h_errnop;
int af;
enum nss_status status;
fn = mdata;
name = va_arg(ap, const char*);
af = va_arg(ap,int);
result = va_arg(ap,struct hostent *);
status = fn(name, result, buffer, buflen, &errnop, &h_errnop);
status = __nss_compat_result(status,errnop);
h_errno = h_errnop;
return (status);
}
int __nss_compat_gethostbyaddr(void *retval, void *mdata, va_list ap)
{
struct in_addr *addr;
int len;
int type;
struct hostent *result;
char buffer[1024];
size_t buflen = 1024;
int errnop;
int h_errnop;
enum nss_status (*fn)(struct in_addr *, int, int, struct hostent *, char *, size_t, int *, int *);
enum nss_status status;
fn = mdata;
addr = va_arg(ap, struct in_addr*);
len = va_arg(ap,int);
type = va_arg(ap,int);
result = va_arg(ap, struct hostent*);
status = fn(addr, len, type, result, buffer, buflen, &errnop, &h_errnop);
status = __nss_compat_result(status,errnop);
h_errno = h_errnop;
return (status);
}
static int
__gr_addgid(gid_t gid, gid_t *groups, int maxgrp, int *groupc)
{
int ret, dupc;
/* skip duplicates */
for (dupc = 0; dupc < MIN(maxgrp, *groupc); dupc++) {
if (groups[dupc] == gid)
return 1;
}
ret = 1;
if (*groupc < maxgrp) /* add this gid */
groups[*groupc] = gid;
else
ret = 0;
(*groupc)++;
return ret;
}
static int __freebsd_getgroupmembership(void *retval, void *mdata, va_list ap)
{
int err;
enum nss_status s;
const char *user = va_arg(ap, const char *);
gid_t group = va_arg(ap, gid_t);
gid_t *groups = va_arg(ap, gid_t *);
int limit = va_arg(ap, int);
int *size = va_arg(ap, int*);
gid_t *tmpgroups;
long int lstart, lsize;
int i;
tmpgroups = malloc(limit * sizeof(gid_t));
if (tmpgroups == NULL)
return NS_TRYAGAIN;
/* insert primary membership */
__gr_addgid(group, groups, limit, size);
lstart = 0;
lsize = limit;
s = _nss_ldap_initgroups_dyn(user, group, &lstart, &lsize,
&tmpgroups, 0, &err);
if (s == NSS_STATUS_SUCCESS) {
for (i = 0; i < lstart; i++)
__gr_addgid(tmpgroups[i], groups, limit, size);
s = NSS_STATUS_NOTFOUND;
}
free(tmpgroups);
return __nss_compat_result(s, err);
}
static void *_netgr_result;
static int
__nss_compat_getnetgrent_r(void *retval, void *mdata, va_list ap)
{
char **hostp, **userp, **domp;
char *buffer;
size_t bufsize;
enum nss_status rv;
int *errorp;
int ret;
hostp = va_arg(ap, char **);
userp = va_arg(ap, char **);
domp = va_arg(ap, char **);
buffer = va_arg(ap, char *);
bufsize = va_arg(ap, size_t);
errorp = va_arg(ap, int *);
do {
*errorp = 0;
rv = _nss_ldap_getnetgrent_r(_netgr_result, buffer, bufsize,
errorp);
ret = __nss_compat_result(rv, *errorp);
if (ret != NS_SUCCESS)
return (ret);
rv = _nss_ldap_netgrp_load_result(_netgr_result, hostp, userp,
domp);
ret = __nss_compat_result(rv, 0);
} while (ret == NS_TRYAGAIN);
return (NS_SUCCESS);
}
extern size_t _nss_ldap_netgrent_sz;
static int
__nss_compat_setnetgrent(void *retval, void *mdata, va_list ap)
{
const char *netgroup;
int ret;
netgroup = va_arg(ap, const char *);
if (_netgr_result != NULL)
free(_netgr_result);
_netgr_result = calloc(1, _nss_ldap_netgrent_sz);
if (_netgr_result == NULL)
return (NS_TRYAGAIN);
return (_nss_ldap_setnetgrent(netgroup, _netgr_result));
}
static int
__nss_compat_endnetgrent(void *retval, void *mdata, va_list ap)
{
int ret;
ret = _nss_ldap_endnetgrent(_netgr_result);
free(_netgr_result);
_netgr_result = NULL;
return (ret);
}
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