| // SPDX-License-Identifier: GPL-2.0 |
| |
| #include <linux/ceph/ceph_debug.h> |
| |
| #include <linux/err.h> |
| #include <linux/module.h> |
| #include <linux/random.h> |
| #include <linux/slab.h> |
| |
| #include <linux/ceph/decode.h> |
| #include <linux/ceph/auth.h> |
| |
| #include "auth_none.h" |
| |
| static void reset(struct ceph_auth_client *ac) |
| { |
| struct ceph_auth_none_info *xi = ac->private; |
| |
| xi->starting = true; |
| } |
| |
| static void destroy(struct ceph_auth_client *ac) |
| { |
| kfree(ac->private); |
| ac->private = NULL; |
| } |
| |
| static int is_authenticated(struct ceph_auth_client *ac) |
| { |
| struct ceph_auth_none_info *xi = ac->private; |
| |
| return !xi->starting; |
| } |
| |
| static int should_authenticate(struct ceph_auth_client *ac) |
| { |
| struct ceph_auth_none_info *xi = ac->private; |
| |
| return xi->starting; |
| } |
| |
| static int ceph_auth_none_build_authorizer(struct ceph_auth_client *ac, |
| struct ceph_none_authorizer *au) |
| { |
| void *p = au->buf; |
| void *const end = p + sizeof(au->buf); |
| int ret; |
| |
| ceph_encode_8_safe(&p, end, 1, e_range); |
| ret = ceph_auth_entity_name_encode(ac->name, &p, end); |
| if (ret < 0) |
| return ret; |
| |
| ceph_encode_64_safe(&p, end, ac->global_id, e_range); |
| au->buf_len = p - (void *)au->buf; |
| dout("%s built authorizer len %d\n", __func__, au->buf_len); |
| return 0; |
| |
| e_range: |
| return -ERANGE; |
| } |
| |
| static int build_request(struct ceph_auth_client *ac, void *buf, void *end) |
| { |
| return 0; |
| } |
| |
| /* |
| * the generic auth code decode the global_id, and we carry no actual |
| * authenticate state, so nothing happens here. |
| */ |
| static int handle_reply(struct ceph_auth_client *ac, int result, |
| void *buf, void *end) |
| { |
| struct ceph_auth_none_info *xi = ac->private; |
| |
| xi->starting = false; |
| return result; |
| } |
| |
| static void ceph_auth_none_destroy_authorizer(struct ceph_authorizer *a) |
| { |
| kfree(a); |
| } |
| |
| /* |
| * build an 'authorizer' with our entity_name and global_id. it is |
| * identical for all services we connect to. |
| */ |
| static int ceph_auth_none_create_authorizer( |
| struct ceph_auth_client *ac, int peer_type, |
| struct ceph_auth_handshake *auth) |
| { |
| struct ceph_none_authorizer *au; |
| int ret; |
| |
| au = kmalloc(sizeof(*au), GFP_NOFS); |
| if (!au) |
| return -ENOMEM; |
| |
| au->base.destroy = ceph_auth_none_destroy_authorizer; |
| |
| ret = ceph_auth_none_build_authorizer(ac, au); |
| if (ret) { |
| kfree(au); |
| return ret; |
| } |
| |
| auth->authorizer = (struct ceph_authorizer *) au; |
| auth->authorizer_buf = au->buf; |
| auth->authorizer_buf_len = au->buf_len; |
| auth->authorizer_reply_buf = au->reply_buf; |
| auth->authorizer_reply_buf_len = sizeof (au->reply_buf); |
| |
| return 0; |
| } |
| |
| static const struct ceph_auth_client_ops ceph_auth_none_ops = { |
| .name = "none", |
| .reset = reset, |
| .destroy = destroy, |
| .is_authenticated = is_authenticated, |
| .should_authenticate = should_authenticate, |
| .build_request = build_request, |
| .handle_reply = handle_reply, |
| .create_authorizer = ceph_auth_none_create_authorizer, |
| }; |
| |
| int ceph_auth_none_init(struct ceph_auth_client *ac) |
| { |
| struct ceph_auth_none_info *xi; |
| |
| dout("ceph_auth_none_init %p\n", ac); |
| xi = kzalloc(sizeof(*xi), GFP_NOFS); |
| if (!xi) |
| return -ENOMEM; |
| |
| xi->starting = true; |
| |
| ac->protocol = CEPH_AUTH_NONE; |
| ac->private = xi; |
| ac->ops = &ceph_auth_none_ops; |
| return 0; |
| } |