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Sage Weil4e7a5dc2009-11-18 16:19:57 -08001
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -07002#include <linux/ceph/ceph_debug.h>
Sage Weil4e7a5dc2009-11-18 16:19:57 -08003
4#include <linux/err.h>
5#include <linux/module.h>
6#include <linux/random.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +09007#include <linux/slab.h>
Sage Weil4e7a5dc2009-11-18 16:19:57 -08008
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -07009#include <linux/ceph/decode.h>
10#include <linux/ceph/auth.h>
11
Sage Weil4e7a5dc2009-11-18 16:19:57 -080012#include "auth_none.h"
Sage Weil4e7a5dc2009-11-18 16:19:57 -080013
14static void reset(struct ceph_auth_client *ac)
15{
16 struct ceph_auth_none_info *xi = ac->private;
17
18 xi->starting = true;
Sage Weil4e7a5dc2009-11-18 16:19:57 -080019}
20
21static void destroy(struct ceph_auth_client *ac)
22{
23 kfree(ac->private);
24 ac->private = NULL;
25}
26
27static int is_authenticated(struct ceph_auth_client *ac)
28{
29 struct ceph_auth_none_info *xi = ac->private;
30
31 return !xi->starting;
32}
33
Sage Weila41359f2010-05-25 15:39:06 -070034static int should_authenticate(struct ceph_auth_client *ac)
35{
36 struct ceph_auth_none_info *xi = ac->private;
37
38 return xi->starting;
39}
40
Ilya Dryomov6c1ea262016-04-11 19:34:49 +020041static int ceph_auth_none_build_authorizer(struct ceph_auth_client *ac,
42 struct ceph_none_authorizer *au)
43{
44 void *p = au->buf;
45 void *const end = p + sizeof(au->buf);
46 int ret;
47
48 ceph_encode_8_safe(&p, end, 1, e_range);
49 ret = ceph_entity_name_encode(ac->name, &p, end);
50 if (ret < 0)
51 return ret;
52
53 ceph_encode_64_safe(&p, end, ac->global_id, e_range);
54 au->buf_len = p - (void *)au->buf;
55 dout("%s built authorizer len %d\n", __func__, au->buf_len);
56 return 0;
57
58e_range:
59 return -ERANGE;
60}
61
Tyler Hicks2cb33ca2013-06-20 13:13:59 -070062static int build_request(struct ceph_auth_client *ac, void *buf, void *end)
63{
64 return 0;
65}
66
Sage Weil4e7a5dc2009-11-18 16:19:57 -080067/*
68 * the generic auth code decode the global_id, and we carry no actual
69 * authenticate state, so nothing happens here.
70 */
71static int handle_reply(struct ceph_auth_client *ac, int result,
72 void *buf, void *end)
73{
74 struct ceph_auth_none_info *xi = ac->private;
75
76 xi->starting = false;
77 return result;
78}
79
Ilya Dryomov6c1ea262016-04-11 19:34:49 +020080static void ceph_auth_none_destroy_authorizer(struct ceph_authorizer *a)
81{
82 kfree(a);
83}
84
Sage Weil4e7a5dc2009-11-18 16:19:57 -080085/*
Ilya Dryomov6c1ea262016-04-11 19:34:49 +020086 * build an 'authorizer' with our entity_name and global_id. it is
87 * identical for all services we connect to.
Sage Weil4e7a5dc2009-11-18 16:19:57 -080088 */
89static int ceph_auth_none_create_authorizer(
90 struct ceph_auth_client *ac, int peer_type,
Alex Elder74f18692012-05-16 15:16:39 -050091 struct ceph_auth_handshake *auth)
Sage Weil4e7a5dc2009-11-18 16:19:57 -080092{
Ilya Dryomov6c1ea262016-04-11 19:34:49 +020093 struct ceph_none_authorizer *au;
Sage Weil4e7a5dc2009-11-18 16:19:57 -080094 int ret;
95
Ilya Dryomov6c1ea262016-04-11 19:34:49 +020096 au = kmalloc(sizeof(*au), GFP_NOFS);
97 if (!au)
98 return -ENOMEM;
99
100 au->base.destroy = ceph_auth_none_destroy_authorizer;
101
102 ret = ceph_auth_none_build_authorizer(ac, au);
103 if (ret) {
104 kfree(au);
105 return ret;
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800106 }
107
Alex Elder74f18692012-05-16 15:16:39 -0500108 auth->authorizer = (struct ceph_authorizer *) au;
109 auth->authorizer_buf = au->buf;
110 auth->authorizer_buf_len = au->buf_len;
111 auth->authorizer_reply_buf = au->reply_buf;
112 auth->authorizer_reply_buf_len = sizeof (au->reply_buf);
113
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800114 return 0;
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800115}
116
117static const struct ceph_auth_client_ops ceph_auth_none_ops = {
Sage Weil559c1e02010-05-14 09:55:18 -0700118 .name = "none",
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800119 .reset = reset,
120 .destroy = destroy,
121 .is_authenticated = is_authenticated,
Sage Weila41359f2010-05-25 15:39:06 -0700122 .should_authenticate = should_authenticate,
Tyler Hicks2cb33ca2013-06-20 13:13:59 -0700123 .build_request = build_request,
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800124 .handle_reply = handle_reply,
125 .create_authorizer = ceph_auth_none_create_authorizer,
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800126};
127
128int ceph_auth_none_init(struct ceph_auth_client *ac)
129{
130 struct ceph_auth_none_info *xi;
131
132 dout("ceph_auth_none_init %p\n", ac);
133 xi = kzalloc(sizeof(*xi), GFP_NOFS);
134 if (!xi)
135 return -ENOMEM;
136
137 xi->starting = true;
Sage Weil4e7a5dc2009-11-18 16:19:57 -0800138
139 ac->protocol = CEPH_AUTH_NONE;
140 ac->private = xi;
141 ac->ops = &ceph_auth_none_ops;
142 return 0;
143}
144