static enum nss_status
lookup (const char *name, const char *type, struct passwd *pwd,
char *buffer, size_t buflen, int *errnop)
{
struct parser_data *data = (void *) buffer;
size_t linebuflen;
void *context;
char **list;
int parse_res;
size_t len;
int olderr = errno;
context = _nss_hesiod_init ();
if (context == NULL)
return NSS_STATUS_UNAVAIL;
list = hesiod_resolve (context, name, type);
if (list == NULL)
{
int err = errno;
hesiod_end (context);
__set_errno (olderr);
return err == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
}
linebuflen = buffer + buflen - data->linebuffer;
len = strlen (*list) + 1;
if (linebuflen < len)
{
hesiod_free_list (context, list);
hesiod_end (context);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
memcpy (data->linebuffer, *list, len);
hesiod_free_list (context, list);
hesiod_end (context);
parse_res = _nss_files_parse_pwent (buffer, pwd, data, buflen, errnop);
if (parse_res < 1)
{
__set_errno (olderr);
return parse_res == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND;
}
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_hesiod_initgroups_dyn (const char *user, gid_t group, long int *start,
long int *size, gid_t **groupsp, long int limit,
int *errnop)
{
enum nss_status status = NSS_STATUS_SUCCESS;
char **list = NULL;
char *p;
void *context;
gid_t *groups = *groupsp;
int save_errno;
context = _nss_hesiod_init ();
if (context == NULL)
return NSS_STATUS_UNAVAIL;
list = hesiod_resolve (context, user, "grplist");
if (list == NULL)
{
hesiod_end (context);
return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
}
save_errno = errno;
p = *list;
while (*p != '\0')
{
char *endp;
char *q;
long int val;
status = NSS_STATUS_NOTFOUND;
q = p;
while (*q != '\0' && *q != ':' && *q != ',')
++q;
if (*q != '\0')
*q++ = '\0';
__set_errno (0);
val = strtol (p, &endp, 10);
/* Test whether the number is representable in a variable of
type `gid_t'. If not ignore the number. */
if ((sizeof (gid_t) == sizeof (long int) || (gid_t) val == val)
&& errno == 0)
{
if (*endp == '\0' && endp != p)
{
group = val;
status = NSS_STATUS_SUCCESS;
}
else
status = internal_gid_from_group (context, p, &group);
if (status == NSS_STATUS_SUCCESS
&& !internal_gid_in_list (groups, group, *start))
{
if (__builtin_expect (*start == *size, 0))
{
/* Need a bigger buffer. */
gid_t *newgroups;
long int newsize;
if (limit > 0 && *size == limit)
/* We reached the maximum. */
goto done;
if (limit <= 0)
newsize = 2 * *size;
else
newsize = MIN (limit, 2 * *size);
newgroups = realloc (groups, newsize * sizeof (*groups));
if (newgroups == NULL)
goto done;
*groupsp = groups = newgroups;
*size = newsize;
}
groups[(*start)++] = group;
}
}
p = q;
}
__set_errno (save_errno);
done:
hesiod_free_list (context, list);
hesiod_end (context);
return NSS_STATUS_SUCCESS;
}
