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/*
Copyright (c) 2007-2011 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <dlfcn.h>
#include <errno.h>
#include "authenticate.h"
static void
init (dict_t *this, char *key, data_t *value, void *data)
{
void *handle = NULL;
char *auth_file = NULL;
auth_handle_t *auth_handle = NULL;
auth_fn_t authenticate = NULL;
int *error = NULL;
int ret = 0;
/* It gets over written */
error = data;
if (!strncasecmp (key, "ip", strlen ("ip"))) {
gf_log ("authenticate", GF_LOG_ERROR,
"AUTHENTICATION MODULE \"IP\" HAS BEEN REPLACED "
"BY \"ADDR\"");
dict_set (this, key, data_from_dynptr (NULL, 0));
/* TODO: 1.3.x backword compatibility */
// *error = -1;
// return;
key = "addr";
}
ret = gf_asprintf (&auth_file, "%s/%s.so", LIBDIR, key);
if (-1 == ret) {
dict_set (this, key, data_from_dynptr (NULL, 0));
*error = -1;
return;
}
handle = dlopen (auth_file, RTLD_LAZY);
if (!handle) {
gf_log ("authenticate", GF_LOG_ERROR, "dlopen(%s): %s\n",
auth_file, dlerror ());
dict_set (this, key, data_from_dynptr (NULL, 0));
GF_FREE (auth_file);
*error = -1;
return;
}
GF_FREE (auth_file);
authenticate = dlsym (handle, "gf_auth");
if (!authenticate) {
gf_log ("authenticate", GF_LOG_ERROR,
"dlsym(gf_auth) on %s\n", dlerror ());
dict_set (this, key, data_from_dynptr (NULL, 0));
dlclose (handle);
*error = -1;
return;
}
auth_handle = GF_CALLOC (1, sizeof (*auth_handle),
gf_common_mt_auth_handle_t);
if (!auth_handle) {
dict_set (this, key, data_from_dynptr (NULL, 0));
*error = -1;
dlclose (handle);
return;
}
auth_handle->vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t),
gf_common_mt_volume_opt_list_t);
if (!auth_handle->vol_opt) {
dict_set (this, key, data_from_dynptr (NULL, 0));
*error = -1;
GF_FREE (auth_handle);
dlclose (handle);
return;
}
auth_handle->vol_opt->given_opt = dlsym (handle, "options");
if (auth_handle->vol_opt->given_opt == NULL) {
gf_log ("authenticate", GF_LOG_DEBUG,
"volume option validation not specified");
}
auth_handle->authenticate = authenticate;
auth_handle->handle = handle;
dict_set (this, key,
data_from_dynptr (auth_handle, sizeof (*auth_handle)));
}
static void
fini (dict_t *this, char *key, data_t *value, void *data)
{
auth_handle_t *handle = data_to_ptr (value);
if (handle) {
dlclose (handle->handle);
}
}
int32_t
gf_auth_init (xlator_t *xl, dict_t *auth_modules)
{
int ret = 0;
auth_handle_t *handle = NULL;
data_pair_t *pair = NULL;
dict_foreach (auth_modules, init, &ret);
if (ret)
goto out;
pair = auth_modules->members_list;
while (pair) {
handle = data_to_ptr (pair->value);
if (!handle) {
pair = pair->next;
continue;
}
list_add_tail (&(handle->vol_opt->list),
&(xl->volume_options));
ret = xlator_options_validate_list (xl, xl->options,
handle->vol_opt, NULL);
if (ret)
gf_log ("authenticate", GF_LOG_ERROR,
"volume option validation failed");
pair = pair->next;
}
out:
if (ret) {
gf_log (xl->name, GF_LOG_ERROR, "authentication init failed");
dict_foreach (auth_modules, fini, &ret);
ret = -1;
}
return ret;
}
static dict_t *__input_params;
static dict_t *__config_params;
void
map (dict_t *this, char *key, data_t *value, void *data)
{
dict_t *res = data;
auth_fn_t authenticate;
auth_handle_t *handle = NULL;
if (value && (handle = data_to_ptr (value)) &&
(authenticate = handle->authenticate)) {
dict_set (res, key,
int_to_data (authenticate (__input_params,
__config_params)));
} else {
dict_set (res, key, int_to_data (AUTH_DONT_CARE));
}
}
void
reduce (dict_t *this, char *key, data_t *value, void *data)
{
int64_t val = 0;
int64_t *res = data;
if (!data)
return;
val = data_to_int64 (value);
switch (val)
{
case AUTH_ACCEPT:
if (AUTH_DONT_CARE == *res)
*res = AUTH_ACCEPT;
break;
case AUTH_REJECT:
*res = AUTH_REJECT;
break;
case AUTH_DONT_CARE:
break;
}
}
auth_result_t
gf_authenticate (dict_t *input_params,
dict_t *config_params,
dict_t *auth_modules)
{
char *name = NULL;
dict_t *results = NULL;
int64_t result = AUTH_DONT_CARE;
data_t *peerinfo_data = NULL;
results = get_new_dict ();
__input_params = input_params;
__config_params = config_params;
dict_foreach (auth_modules, map, results);
dict_foreach (results, reduce, &result);
if (AUTH_DONT_CARE == result) {
peerinfo_data = dict_get (input_params, "peer-info-name");
if (peerinfo_data) {
name = peerinfo_data->data;
}
gf_log ("auth", GF_LOG_ERROR,
"no authentication module is interested in "
"accepting remote-client %s", name);
result = AUTH_REJECT;
}
dict_destroy (results);
return result;
}
void
gf_auth_fini (dict_t *auth_modules)
{
int32_t dummy;
dict_foreach (auth_modules, fini, &dummy);
}
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