int
attribute_compat_text_section
__nss_next (service_user **ni, const char *fct_name, void **fctp, int status,
int all_values)
{
return __nss_next2 (ni, fct_name, NULL, fctp, status, all_values);
}
static int
internal_function
__internal_setnetgrent_reuse (const char *group, struct __netgrent *datap,
int *errnop)
{
union
{
enum nss_status (*f) (const char *, struct __netgrent *);
void *ptr;
} fct;
enum nss_status status = NSS_STATUS_UNAVAIL;
struct name_list *new_elem;
/* Free data from previous service. */
endnetgrent_hook (datap);
/* Cycle through all the services and run their setnetgrent functions. */
int no_more = setup (&fct.ptr, &datap->nip);
while (! no_more)
{
assert (datap->data == NULL);
/* Ignore status, we force check in `__nss_next2'. */
status = DL_CALL_FCT (*fct.f, (group, datap));
service_user *old_nip = datap->nip;
no_more = __nss_next2 (&datap->nip, "setnetgrent", NULL, &fct.ptr,
status, 0);
if (status == NSS_STATUS_SUCCESS && ! no_more)
{
enum nss_status (*endfct) (struct __netgrent *);
endfct = __nss_lookup_function (old_nip, "endnetgrent");
if (endfct != NULL)
(void) DL_CALL_FCT (*endfct, (datap));
}
}
/* Add the current group to the list of known groups. */
size_t group_len = strlen (group) + 1;
new_elem = (struct name_list *) malloc (sizeof (struct name_list)
+ group_len);
if (new_elem == NULL)
{
*errnop = errno;
status = NSS_STATUS_TRYAGAIN;
}
else
{
new_elem->next = datap->known_groups;
memcpy (new_elem->name, group, group_len);
datap->known_groups = new_elem;
}
return status == NSS_STATUS_SUCCESS;
}
int
ether_ntohost (char *hostname, const struct ether_addr *addr)
{
static service_user *startp;
static lookup_function start_fct;
service_user *nip;
union
{
lookup_function f;
void *ptr;
} fct;
int no_more;
enum nss_status status = NSS_STATUS_UNAVAIL;
struct etherent etherent;
if (startp == NULL)
{
no_more = __nss_ethers_lookup (&nip, "getntohost_r", &fct.ptr);
if (no_more)
startp = (service_user *) -1;
else
{
startp = nip;
start_fct = fct.f;
}
}
else
{
fct.f = start_fct;
no_more = (nip = startp) == (service_user *) -1;
}
while (no_more == 0)
{
char buffer[1024];
status = (*fct.f) (addr, ðerent, buffer, sizeof buffer, &errno);
no_more = __nss_next2 (&nip, "getntohost_r", NULL, &fct.ptr, status, 0);
}
if (status == NSS_STATUS_SUCCESS)
/* XXX This is a potential cause of trouble because the size of
the HOSTNAME buffer is not known but the interface does not
provide this information. */
strcpy (hostname, etherent.e_name);
return status == NSS_STATUS_SUCCESS ? 0 : -1;
}
int
ether_hostton (const char *hostname, struct ether_addr *addr)
{
static service_user *startp;
static lookup_function start_fct;
service_user *nip;
union
{
lookup_function f;
void *ptr;
} fct;
int no_more;
enum nss_status status = NSS_STATUS_UNAVAIL;
struct etherent etherent;
if (startp == NULL)
{
no_more = __nss_ethers_lookup (&nip, "gethostton_r", &fct.ptr);
if (no_more)
startp = (service_user *) -1;
else
{
startp = nip;
start_fct = fct.f;
}
}
else
{
fct.f = start_fct;
no_more = (nip = startp) == (service_user *) -1;
}
while (no_more == 0)
{
char buffer[1024];
status = (*fct.f) (hostname, ðerent, buffer, sizeof buffer, &errno);
no_more = __nss_next2 (&nip, "gethostton_r", NULL, &fct.ptr, status, 0);
}
if (status == NSS_STATUS_SUCCESS)
memcpy (addr, etherent.e_addr.ether_addr_octet,
sizeof (struct ether_addr));
return status == NSS_STATUS_SUCCESS ? 0 : -1;
}
int
netname2user (const char netname[MAXNETNAMELEN + 1], uid_t * uidp, gid_t * gidp,
int *gidlenp, gid_t * gidlist)
{
static service_user *startp;
static netname2user_function start_fct;
service_user *nip;
union
{
netname2user_function f;
void *ptr;
} fct;
enum nss_status status = NSS_STATUS_UNAVAIL;
int no_more;
if (startp == NULL)
{
no_more = __nss_publickey_lookup (&nip, "netname2user", &fct.ptr);
if (no_more)
startp = (service_user *) - 1;
else
{
startp = nip;
start_fct = fct.f;
}
}
else
{
fct.f = start_fct;
no_more = (nip = startp) == (service_user *) - 1;
}
while (!no_more)
{
status = (*fct.f) (netname, uidp, gidp, gidlenp, gidlist);
no_more = __nss_next2 (&nip, "netname2user", NULL, &fct.ptr, status, 0);
}
return status == NSS_STATUS_SUCCESS;
}
int
getsecretkey (const char *name, char *key, const char *passwd)
{
static service_user *startp;
static secret_function start_fct;
service_user *nip;
union
{
secret_function f;
void *ptr;
} fct;
enum nss_status status = NSS_STATUS_UNAVAIL;
int no_more;
if (startp == NULL)
{
no_more = __nss_publickey_lookup (&nip, "getsecretkey", &fct.ptr);
if (no_more)
startp = (service_user *) -1;
else
{
startp = nip;
start_fct = fct.f;
}
}
else
{
fct.f = start_fct;
no_more = (nip = startp) == (service_user *) -1;
}
while (! no_more)
{
status = (*fct.f) (name, key, passwd, &errno);
no_more = __nss_next2 (&nip, "getsecretkey", NULL, &fct.ptr, status, 0);
}
return status == NSS_STATUS_SUCCESS;
}
/* Test whether given (host,user,domain) triple is in NETGROUP. */
int
innetgr (const char *netgroup, const char *host, const char *user,
const char *domain)
{
#ifdef USE_NSCD
if (__nss_not_use_nscd_netgroup > 0
&& ++__nss_not_use_nscd_netgroup > NSS_NSCD_RETRY)
__nss_not_use_nscd_netgroup = 0;
if (!__nss_not_use_nscd_netgroup
&& !__nss_database_custom[NSS_DBSIDX_netgroup])
{
int result = __nscd_innetgr (netgroup, host, user, domain);
if (result >= 0)
return result;
}
#endif
union
{
enum nss_status (*f) (const char *, struct __netgrent *);
void *ptr;
} setfct;
void (*endfct) (struct __netgrent *);
int (*getfct) (struct __netgrent *, char *, size_t, int *);
struct __netgrent entry;
int result = 0;
const char *current_group = netgroup;
memset (&entry, '\0', sizeof (entry));
/* Walk through the services until we found an answer or we shall
not work further. We can do some optimization here. Since all
services must provide the `setnetgrent' function we can do all
the work during one walk through the service list. */
while (1)
{
int no_more = setup (&setfct.ptr, &entry.nip);
while (! no_more)
{
assert (entry.data == NULL);
/* Open netgroup. */
enum nss_status status = DL_CALL_FCT (*setfct.f,
(current_group, &entry));
if (status == NSS_STATUS_SUCCESS
&& (getfct = __nss_lookup_function (entry.nip, "getnetgrent_r"))
!= NULL)
{
char buffer[1024];
while (DL_CALL_FCT (*getfct,
(&entry, buffer, sizeof buffer, &errno))
== NSS_STATUS_SUCCESS)
{
if (entry.type == group_val)
{
/* Make sure we haven't seen the name before. */
struct name_list *namep;
for (namep = entry.known_groups; namep != NULL;
namep = namep->next)
if (strcmp (entry.val.group, namep->name) == 0)
break;
if (namep == NULL)
for (namep = entry.needed_groups; namep != NULL;
namep = namep->next)
if (strcmp (entry.val.group, namep->name) == 0)
break;
if (namep == NULL
&& strcmp (netgroup, entry.val.group) != 0)
{
size_t group_len = strlen (entry.val.group) + 1;
namep =
(struct name_list *) malloc (sizeof (*namep)
+ group_len);
if (namep == NULL)
{
/* Out of memory, simply return. */
result = -1;
break;
}
namep->next = entry.needed_groups;
memcpy (namep->name, entry.val.group, group_len);
entry.needed_groups = namep;
}
}
else
{
if ((entry.val.triple.host == NULL || host == NULL
|| __strcasecmp (entry.val.triple.host, host) == 0)
&& (entry.val.triple.user == NULL || user == NULL
|| strcmp (entry.val.triple.user, user) == 0)
&& (entry.val.triple.domain == NULL || domain == NULL
|| __strcasecmp (entry.val.triple.domain,
domain) == 0))
{
result = 1;
break;
}
}
}
/* If we found one service which does know the given
netgroup we don't try further. */
status = NSS_STATUS_RETURN;
}
/* Free all resources of the service. */
endfct = __nss_lookup_function (entry.nip, "endnetgrent");
if (endfct != NULL)
DL_CALL_FCT (*endfct, (&entry));
if (result != 0)
break;
/* Look for the next service. */
no_more = __nss_next2 (&entry.nip, "setnetgrent", NULL,
&setfct.ptr, status, 0);
}
if (result == 0 && entry.needed_groups != NULL)
{
struct name_list *tmp = entry.needed_groups;
entry.needed_groups = tmp->next;
tmp->next = entry.known_groups;
entry.known_groups = tmp;
current_group = tmp->name;
continue;
}
/* No way out. */
break;
}
/* Free the memory. */
free_memory (&entry);
return result == 1;
}
