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d71a95e7ff
We never receive authorizer replies with cephx disabled, so it is bogus. Also, it still uses the old zero-length array style. Reported-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/ceph/ceph_debug.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/random.h>
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#include <linux/slab.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/auth.h>
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#include "auth_none.h"
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static void reset(struct ceph_auth_client *ac)
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{
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struct ceph_auth_none_info *xi = ac->private;
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xi->starting = true;
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}
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static void destroy(struct ceph_auth_client *ac)
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{
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kfree(ac->private);
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ac->private = NULL;
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}
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static int is_authenticated(struct ceph_auth_client *ac)
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{
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struct ceph_auth_none_info *xi = ac->private;
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return !xi->starting;
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}
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static int should_authenticate(struct ceph_auth_client *ac)
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{
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struct ceph_auth_none_info *xi = ac->private;
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return xi->starting;
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}
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static int ceph_auth_none_build_authorizer(struct ceph_auth_client *ac,
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struct ceph_none_authorizer *au)
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{
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void *p = au->buf;
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void *const end = p + sizeof(au->buf);
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int ret;
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ceph_encode_8_safe(&p, end, 1, e_range);
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ret = ceph_auth_entity_name_encode(ac->name, &p, end);
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if (ret < 0)
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return ret;
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ceph_encode_64_safe(&p, end, ac->global_id, e_range);
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au->buf_len = p - (void *)au->buf;
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dout("%s built authorizer len %d\n", __func__, au->buf_len);
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return 0;
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e_range:
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return -ERANGE;
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}
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static int build_request(struct ceph_auth_client *ac, void *buf, void *end)
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{
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return 0;
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}
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/*
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* the generic auth code decode the global_id, and we carry no actual
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* authenticate state, so nothing happens here.
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*/
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static int handle_reply(struct ceph_auth_client *ac, u64 global_id,
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void *buf, void *end, u8 *session_key,
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int *session_key_len, u8 *con_secret,
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int *con_secret_len)
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{
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struct ceph_auth_none_info *xi = ac->private;
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xi->starting = false;
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ceph_auth_set_global_id(ac, global_id);
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return 0;
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}
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static void ceph_auth_none_destroy_authorizer(struct ceph_authorizer *a)
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{
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kfree(a);
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}
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/*
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* build an 'authorizer' with our entity_name and global_id. it is
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* identical for all services we connect to.
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*/
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static int ceph_auth_none_create_authorizer(
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struct ceph_auth_client *ac, int peer_type,
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struct ceph_auth_handshake *auth)
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{
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struct ceph_none_authorizer *au;
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int ret;
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au = kmalloc(sizeof(*au), GFP_NOFS);
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if (!au)
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return -ENOMEM;
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au->base.destroy = ceph_auth_none_destroy_authorizer;
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ret = ceph_auth_none_build_authorizer(ac, au);
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if (ret) {
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kfree(au);
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return ret;
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}
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auth->authorizer = (struct ceph_authorizer *) au;
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auth->authorizer_buf = au->buf;
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auth->authorizer_buf_len = au->buf_len;
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auth->authorizer_reply_buf = NULL;
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auth->authorizer_reply_buf_len = 0;
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return 0;
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}
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static const struct ceph_auth_client_ops ceph_auth_none_ops = {
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.reset = reset,
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.destroy = destroy,
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.is_authenticated = is_authenticated,
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.should_authenticate = should_authenticate,
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.build_request = build_request,
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.handle_reply = handle_reply,
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.create_authorizer = ceph_auth_none_create_authorizer,
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};
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int ceph_auth_none_init(struct ceph_auth_client *ac)
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{
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struct ceph_auth_none_info *xi;
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dout("ceph_auth_none_init %p\n", ac);
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xi = kzalloc(sizeof(*xi), GFP_NOFS);
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if (!xi)
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return -ENOMEM;
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xi->starting = true;
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ac->protocol = CEPH_AUTH_NONE;
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ac->private = xi;
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ac->ops = &ceph_auth_none_ops;
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return 0;
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}
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