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/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "rpcsvc.h"
#include "list.h"
#include "dict.h"
#include "xdr-rpc.h"
#include "xdr-common.h"
#include "rpc-common-xdr.h"
/* V1 */
ssize_t
xdr_to_glusterfs_auth (char *buf, struct auth_glusterfs_parms *req)
{
XDR xdr;
ssize_t ret = -1;
if ((!buf) || (!req))
return -1;
xdrmem_create (&xdr, buf, sizeof (struct auth_glusterfs_parms),
XDR_DECODE);
if (!xdr_auth_glusterfs_parms (&xdr, req)) {
gf_log ("", GF_LOG_WARNING,
"failed to decode glusterfs parameters");
ret = -1;
goto ret;
}
ret = (((size_t)(&xdr)->x_private) - ((size_t)(&xdr)->x_base));
ret:
return ret;
}
int
auth_glusterfs_request_init (rpcsvc_request_t *req, void *priv)
{
return 0;
}
int auth_glusterfs_authenticate (rpcsvc_request_t *req, void *priv)
{
struct auth_glusterfs_parms au = {0,};
int ret = RPCSVC_AUTH_REJECT;
int j = 0;
int i = 0;
int gidcount = 0;
if (!req)
return ret;
ret = xdr_to_glusterfs_auth (req->cred.authdata, &au);
if (ret == -1) {
gf_log ("", GF_LOG_WARNING,
"failed to decode glusterfs credentials");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
req->pid = au.pid;
req->uid = au.uid;
req->gid = au.gid;
req->lk_owner.len = 8;
{
for (i = 0; i < req->lk_owner.len; i++, j += 8)
req->lk_owner.data[i] = (char)((au.lk_owner >> j) & 0xff);
}
req->auxgidcount = au.ngrps;
if (req->auxgidcount > 16) {
gf_log ("", GF_LOG_WARNING,
"more than 16 aux gids found, failing authentication");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
if (req->auxgidcount > SMALL_GROUP_COUNT) {
req->auxgidlarge = GF_CALLOC(req->auxgidcount,
sizeof(req->auxgids[0]),
gf_common_mt_auxgids);
req->auxgids = req->auxgidlarge;
} else {
req->auxgids = req->auxgidsmall;
}
if (!req->auxgids) {
gf_log ("auth-glusterfs", GF_LOG_WARNING,
"cannot allocate gid list");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
for (gidcount = 0; gidcount < au.ngrps; ++gidcount)
req->auxgids[gidcount] = au.groups[gidcount];
RPC_AUTH_ROOT_SQUASH(req);
gf_log (GF_RPCSVC, GF_LOG_TRACE, "Auth Info: pid: %u, uid: %d"
", gid: %d, owner: %s",
req->pid, req->uid, req->gid, lkowner_utoa (&req->lk_owner));
ret = RPCSVC_AUTH_ACCEPT;
err:
return ret;
}
rpcsvc_auth_ops_t auth_glusterfs_ops = {
.transport_init = NULL,
.request_init = auth_glusterfs_request_init,
.authenticate = auth_glusterfs_authenticate
};
rpcsvc_auth_t rpcsvc_auth_glusterfs = {
.authname = "AUTH_GLUSTERFS",
.authnum = AUTH_GLUSTERFS,
.authops = &auth_glusterfs_ops,
.authprivate = NULL
};
rpcsvc_auth_t *
rpcsvc_auth_glusterfs_init (rpcsvc_t *svc, dict_t *options)
{
return &rpcsvc_auth_glusterfs;
}
/* V2 */
ssize_t
xdr_to_glusterfs_auth_v2 (char *buf, struct auth_glusterfs_parms_v2 *req)
{
XDR xdr;
ssize_t ret = -1;
if ((!buf) || (!req))
return -1;
xdrmem_create (&xdr, buf, GF_MAX_AUTH_BYTES, XDR_DECODE);
if (!xdr_auth_glusterfs_parms_v2 (&xdr, req)) {
gf_log ("", GF_LOG_WARNING,
"failed to decode glusterfs v2 parameters");
ret = -1;
goto ret;
}
ret = (((size_t)(&xdr)->x_private) - ((size_t)(&xdr)->x_base));
ret:
return ret;
}
int
auth_glusterfs_v2_request_init (rpcsvc_request_t *req, void *priv)
{
return 0;
}
int auth_glusterfs_v2_authenticate (rpcsvc_request_t *req, void *priv)
{
struct auth_glusterfs_parms_v2 au = {0,};
int ret = RPCSVC_AUTH_REJECT;
int i = 0;
if (!req)
return ret;
ret = xdr_to_glusterfs_auth_v2 (req->cred.authdata, &au);
if (ret == -1) {
gf_log ("", GF_LOG_WARNING,
"failed to decode glusterfs credentials");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
req->pid = au.pid;
req->uid = au.uid;
req->gid = au.gid;
req->lk_owner.len = au.lk_owner.lk_owner_len;
req->auxgidcount = au.groups.groups_len;
if (req->auxgidcount > GF_MAX_AUX_GROUPS) {
gf_log ("", GF_LOG_WARNING,
"more than max aux gids found (%d) , truncating it "
"to %d and continuing", au.groups.groups_len,
GF_MAX_AUX_GROUPS);
req->auxgidcount = GF_MAX_AUX_GROUPS;
}
if (req->lk_owner.len > GF_MAX_LOCK_OWNER_LEN) {
gf_log ("", GF_LOG_WARNING,
"lkowner field > 1k, failing authentication");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
if (req->auxgidcount > SMALL_GROUP_COUNT) {
req->auxgidlarge = GF_CALLOC(req->auxgidcount,
sizeof(req->auxgids[0]),
gf_common_mt_auxgids);
req->auxgids = req->auxgidlarge;
} else {
req->auxgids = req->auxgidsmall;
}
if (!req->auxgids) {
gf_log ("auth-glusterfs-v2", GF_LOG_WARNING,
"cannot allocate gid list");
ret = RPCSVC_AUTH_REJECT;
goto err;
}
for (i = 0; i < req->auxgidcount; ++i)
req->auxgids[i] = au.groups.groups_val[i];
for (i = 0; i < au.lk_owner.lk_owner_len; ++i)
req->lk_owner.data[i] = au.lk_owner.lk_owner_val[i];
RPC_AUTH_ROOT_SQUASH(req);
gf_log (GF_RPCSVC, GF_LOG_TRACE, "Auth Info: pid: %u, uid: %d"
", gid: %d, owner: %s",
req->pid, req->uid, req->gid, lkowner_utoa (&req->lk_owner));
ret = RPCSVC_AUTH_ACCEPT;
err:
/* TODO: instead use alloca() for these variables */
free (au.groups.groups_val);
free (au.lk_owner.lk_owner_val);
return ret;
}
rpcsvc_auth_ops_t auth_glusterfs_ops_v2 = {
.transport_init = NULL,
.request_init = auth_glusterfs_v2_request_init,
.authenticate = auth_glusterfs_v2_authenticate
};
rpcsvc_auth_t rpcsvc_auth_glusterfs_v2 = {
.authname = "AUTH_GLUSTERFS-v2",
.authnum = AUTH_GLUSTERFS_v2,
.authops = &auth_glusterfs_ops_v2,
.authprivate = NULL
};
rpcsvc_auth_t *
rpcsvc_auth_glusterfs_v2_init (rpcsvc_t *svc, dict_t *options)
{
return &rpcsvc_auth_glusterfs_v2;
}
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