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/*
Copyright (c) 2010 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/>.
*/
#include "rpcsvc.h"
#include "logging.h"
#include "dict.h"
extern rpcsvc_auth_t *
rpcsvc_auth_null_init (rpcsvc_t *svc, dict_t *options);
extern rpcsvc_auth_t *
rpcsvc_auth_unix_init (rpcsvc_t *svc, dict_t *options);
extern rpcsvc_auth_t *
rpcsvc_auth_glusterfs_init (rpcsvc_t *svc, dict_t *options);
int
rpcsvc_auth_add_initer (struct list_head *list, char *idfier,
rpcsvc_auth_initer_t init)
{
struct rpcsvc_auth_list *new = NULL;
if ((!list) || (!init) || (!idfier))
return -1;
new = GF_CALLOC (1, sizeof (*new), 0);
if (!new) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Memory allocation failed");
return -1;
}
new->init = init;
strcpy (new->name, idfier);
INIT_LIST_HEAD (&new->authlist);
list_add_tail (&new->authlist, list);
return 0;
}
int
rpcsvc_auth_add_initers (rpcsvc_t *svc)
{
int ret = -1;
ret = rpcsvc_auth_add_initer (&svc->authschemes, "auth-glusterfs",
(rpcsvc_auth_initer_t)
rpcsvc_auth_glusterfs_init);
if (ret == -1) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Failed to add AUTH_GLUSTERFS");
goto err;
}
ret = rpcsvc_auth_add_initer (&svc->authschemes, "auth-unix",
(rpcsvc_auth_initer_t)
rpcsvc_auth_unix_init);
if (ret == -1) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Failed to add AUTH_UNIX");
goto err;
}
ret = rpcsvc_auth_add_initer (&svc->authschemes, "auth-null",
(rpcsvc_auth_initer_t)
rpcsvc_auth_null_init);
if (ret == -1) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Failed to add AUTH_NULL");
goto err;
}
ret = 0;
err:
return 0;
}
int
rpcsvc_auth_init_auth (rpcsvc_t *svc, dict_t *options,
struct rpcsvc_auth_list *authitem)
{
int ret = -1;
if ((!svc) || (!options) || (!authitem))
return -1;
if (!authitem->init) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "No init function defined");
ret = -1;
goto err;
}
authitem->auth = authitem->init (svc, options);
if (!authitem->auth) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Registration of auth failed:"
" %s", authitem->name);
ret = -1;
goto err;
}
authitem->enable = 1;
gf_log (GF_RPCSVC, GF_LOG_TRACE, "Authentication enabled: %s",
authitem->auth->authname);
ret = 0;
err:
return ret;
}
int
rpcsvc_auth_init_auths (rpcsvc_t *svc, dict_t *options)
{
int ret = -1;
struct rpcsvc_auth_list *auth = NULL;
struct rpcsvc_auth_list *tmp = NULL;
if (!svc)
return -1;
if (list_empty (&svc->authschemes)) {
gf_log (GF_RPCSVC, GF_LOG_WARNING, "No authentication!");
ret = 0;
goto err;
}
/* If auth null and sys are not disabled by the user, we must enable
* it by default. This is a globally default rule, the user is still
* allowed to disable the two for particular subvolumes.
*/
if (!dict_get (options, "rpc-auth.auth-null"))
ret = dict_set_str (options, "rpc-auth.auth-null", "on");
if (!dict_get (options, "rpc-auth.auth-unix"))
ret = dict_set_str (options, "rpc-auth.auth-unix", "on");
if (!dict_get (options, "rpc-auth.auth-glusterfs"))
ret = dict_set_str (options, "rpc-auth.auth-glusterfs", "on");
list_for_each_entry_safe (auth, tmp, &svc->authschemes, authlist) {
ret = rpcsvc_auth_init_auth (svc, options, auth);
if (ret == -1)
goto err;
}
ret = 0;
err:
return ret;
}
int
rpcsvc_auth_init (rpcsvc_t *svc, dict_t *options)
{
int ret = -1;
if ((!svc) || (!options))
return -1;
ret = rpcsvc_auth_add_initers (svc);
if (ret == -1) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Failed to add initers");
goto out;
}
ret = rpcsvc_auth_init_auths (svc, options);
if (ret == -1) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Failed to init auth schemes");
goto out;
}
out:
return ret;
}
rpcsvc_auth_t *
__rpcsvc_auth_get_handler (rpcsvc_request_t *req)
{
int ret = -1;
struct rpcsvc_auth_list *auth = NULL;
struct rpcsvc_auth_list *tmp = NULL;
rpcsvc_t *svc = NULL;
if (!req)
return NULL;
svc = rpcsvc_request_service (req);
if (!svc)
gf_log ("", 1, "something wrong, !svc");
if (list_empty (&svc->authschemes)) {
gf_log (GF_RPCSVC, GF_LOG_WARNING, "No authentication!");
ret = 0;
goto err;
}
list_for_each_entry_safe (auth, tmp, &svc->authschemes, authlist) {
if (!auth->enable)
continue;
if (auth->auth->authnum == req->cred.flavour)
goto err;
}
auth = NULL;
err:
if (auth)
return auth->auth;
else
return NULL;
}
rpcsvc_auth_t *
rpcsvc_auth_get_handler (rpcsvc_request_t *req)
{
rpcsvc_auth_t *auth = NULL;
auth = __rpcsvc_auth_get_handler (req);
if (auth)
goto ret;
gf_log (GF_RPCSVC, GF_LOG_TRACE, "No auth handler: %d",
req->cred.flavour);
/* The requested scheme was not available so fall back the to one
* scheme that will always be present.
*/
req->cred.flavour = AUTH_NULL;
req->verf.flavour = AUTH_NULL;
auth = __rpcsvc_auth_get_handler (req);
ret:
return auth;
}
int
rpcsvc_auth_request_init (rpcsvc_request_t *req)
{
int ret = -1;
rpcsvc_auth_t *auth = NULL;
if (!req)
return -1;
auth = rpcsvc_auth_get_handler (req);
if (!auth)
goto err;
ret = 0;
gf_log (GF_RPCSVC, GF_LOG_TRACE, "Auth handler: %s", auth->authname);
if (!auth->authops->request_init)
ret = auth->authops->request_init (req, auth->authprivate);
err:
return ret;
}
int
rpcsvc_authenticate (rpcsvc_request_t *req)
{
int ret = RPCSVC_AUTH_REJECT;
rpcsvc_auth_t *auth = NULL;
int minauth = 0;
if (!req)
return ret;
//minauth = rpcsvc_request_prog_minauth (req);
minauth = 1;
if (minauth > rpcsvc_request_cred_flavour (req)) {
gf_log (GF_RPCSVC, GF_LOG_DEBUG, "Auth too weak");
rpcsvc_request_set_autherr (req, AUTH_TOOWEAK);
goto err;
}
auth = rpcsvc_auth_get_handler (req);
if (!auth) {
gf_log (GF_RPCSVC, GF_LOG_DEBUG, "No auth handler found");
goto err;
}
if (auth->authops->authenticate)
ret = auth->authops->authenticate (req, auth->authprivate);
err:
return ret;
}
int
rpcsvc_auth_array (rpcsvc_t *svc, char *volname, int *autharr, int arrlen)
{
int count = 0;
int gen = RPCSVC_AUTH_REJECT;
int spec = RPCSVC_AUTH_REJECT;
int final = RPCSVC_AUTH_REJECT;
char *srchstr = NULL;
char *valstr = NULL;
gf_boolean_t boolval = _gf_false;
int ret = 0;
struct rpcsvc_auth_list *auth = NULL;
struct rpcsvc_auth_list *tmp = NULL;
if ((!svc) || (!autharr) || (!volname))
return -1;
memset (autharr, 0, arrlen * sizeof(int));
if (list_empty (&svc->authschemes)) {
gf_log (GF_RPCSVC, GF_LOG_ERROR, "No authentication!");
goto err;
}
list_for_each_entry_safe (auth, tmp, &svc->authschemes, authlist) {
if (count >= arrlen)
break;
gen = gf_asprintf (&srchstr, "rpc-auth.%s", auth->name);
if (gen == -1) {
count = -1;
goto err;
}
gen = RPCSVC_AUTH_REJECT;
if (dict_get (svc->options, srchstr)) {
ret = dict_get_str (svc->options, srchstr, &valstr);
if (ret == 0) {
ret = gf_string2boolean (valstr, &boolval);
if (ret == 0) {
if (boolval == _gf_true)
gen = RPCSVC_AUTH_ACCEPT;
} else
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Faile"
"d to read auth val");
} else
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Faile"
"d to read auth val");
}
GF_FREE (srchstr);
spec = gf_asprintf (&srchstr, "rpc-auth.%s.%s", auth->name,
volname);
if (spec == -1) {
count = -1;
goto err;
}
spec = RPCSVC_AUTH_DONTCARE;
if (dict_get (svc->options, srchstr)) {
ret = dict_get_str (svc->options, srchstr, &valstr);
if (ret == 0) {
ret = gf_string2boolean (valstr, &boolval);
if (ret == 0) {
if (boolval == _gf_true)
spec = RPCSVC_AUTH_ACCEPT;
else
spec = RPCSVC_AUTH_REJECT;
} else
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Faile"
"d to read auth val");
} else
gf_log (GF_RPCSVC, GF_LOG_ERROR, "Faile"
"d to read auth val");
}
GF_FREE (srchstr);
final = rpcsvc_combine_gen_spec_volume_checks (gen, spec);
if (final == RPCSVC_AUTH_ACCEPT) {
autharr[count] = auth->auth->authnum;
++count;
}
}
err:
return count;
}
gid_t *
rpcsvc_auth_unix_auxgids (rpcsvc_request_t *req, int *arrlen)
{
if ((!req) || (!arrlen))
return NULL;
if ((req->cred.flavour != AUTH_UNIX) ||
(req->cred.flavour != AUTH_GLUSTERFS))
return NULL;
*arrlen = req->auxgidcount;
if (*arrlen == 0)
return NULL;
return &req->auxgids[0];
}
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