Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 2 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 3 | #include <linux/ceph/ceph_debug.h> |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 4 | |
| 5 | #include <linux/err.h> |
| 6 | #include <linux/module.h> |
| 7 | #include <linux/random.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 8 | #include <linux/slab.h> |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 9 | |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 10 | #include <linux/ceph/decode.h> |
| 11 | #include <linux/ceph/auth.h> |
| 12 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 13 | #include "auth_none.h" |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 14 | |
| 15 | static void reset(struct ceph_auth_client *ac) |
| 16 | { |
| 17 | struct ceph_auth_none_info *xi = ac->private; |
| 18 | |
| 19 | xi->starting = true; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 20 | } |
| 21 | |
| 22 | static void destroy(struct ceph_auth_client *ac) |
| 23 | { |
| 24 | kfree(ac->private); |
| 25 | ac->private = NULL; |
| 26 | } |
| 27 | |
| 28 | static int is_authenticated(struct ceph_auth_client *ac) |
| 29 | { |
| 30 | struct ceph_auth_none_info *xi = ac->private; |
| 31 | |
| 32 | return !xi->starting; |
| 33 | } |
| 34 | |
Sage Weil | a41359f | 2010-05-25 15:39:06 -0700 | [diff] [blame] | 35 | static int should_authenticate(struct ceph_auth_client *ac) |
| 36 | { |
| 37 | struct ceph_auth_none_info *xi = ac->private; |
| 38 | |
| 39 | return xi->starting; |
| 40 | } |
| 41 | |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 42 | static int ceph_auth_none_build_authorizer(struct ceph_auth_client *ac, |
| 43 | struct ceph_none_authorizer *au) |
| 44 | { |
| 45 | void *p = au->buf; |
| 46 | void *const end = p + sizeof(au->buf); |
| 47 | int ret; |
| 48 | |
| 49 | ceph_encode_8_safe(&p, end, 1, e_range); |
Ilya Dryomov | f01d5cb | 2016-06-02 16:45:08 +0200 | [diff] [blame] | 50 | ret = ceph_auth_entity_name_encode(ac->name, &p, end); |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 51 | if (ret < 0) |
| 52 | return ret; |
| 53 | |
| 54 | ceph_encode_64_safe(&p, end, ac->global_id, e_range); |
| 55 | au->buf_len = p - (void *)au->buf; |
| 56 | dout("%s built authorizer len %d\n", __func__, au->buf_len); |
| 57 | return 0; |
| 58 | |
| 59 | e_range: |
| 60 | return -ERANGE; |
| 61 | } |
| 62 | |
Tyler Hicks | 2cb33ca | 2013-06-20 13:13:59 -0700 | [diff] [blame] | 63 | static int build_request(struct ceph_auth_client *ac, void *buf, void *end) |
| 64 | { |
| 65 | return 0; |
| 66 | } |
| 67 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 68 | /* |
| 69 | * the generic auth code decode the global_id, and we carry no actual |
| 70 | * authenticate state, so nothing happens here. |
| 71 | */ |
Ilya Dryomov | 03af4c7 | 2021-06-21 12:17:40 +0200 | [diff] [blame] | 72 | static int handle_reply(struct ceph_auth_client *ac, u64 global_id, |
Ilya Dryomov | 285ea34f | 2020-10-26 16:47:20 +0100 | [diff] [blame] | 73 | void *buf, void *end, u8 *session_key, |
| 74 | int *session_key_len, u8 *con_secret, |
| 75 | int *con_secret_len) |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 76 | { |
| 77 | struct ceph_auth_none_info *xi = ac->private; |
| 78 | |
| 79 | xi->starting = false; |
Ilya Dryomov | 03af4c7 | 2021-06-21 12:17:40 +0200 | [diff] [blame] | 80 | ceph_auth_set_global_id(ac, global_id); |
Ilya Dryomov | 3c0d089 | 2021-06-21 11:53:38 +0200 | [diff] [blame] | 81 | return 0; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 82 | } |
| 83 | |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 84 | static void ceph_auth_none_destroy_authorizer(struct ceph_authorizer *a) |
| 85 | { |
| 86 | kfree(a); |
| 87 | } |
| 88 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 89 | /* |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 90 | * build an 'authorizer' with our entity_name and global_id. it is |
| 91 | * identical for all services we connect to. |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 92 | */ |
| 93 | static int ceph_auth_none_create_authorizer( |
| 94 | struct ceph_auth_client *ac, int peer_type, |
Alex Elder | 74f1869 | 2012-05-16 15:16:39 -0500 | [diff] [blame] | 95 | struct ceph_auth_handshake *auth) |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 96 | { |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 97 | struct ceph_none_authorizer *au; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 98 | int ret; |
| 99 | |
Ilya Dryomov | 6c1ea26 | 2016-04-11 19:34:49 +0200 | [diff] [blame] | 100 | au = kmalloc(sizeof(*au), GFP_NOFS); |
| 101 | if (!au) |
| 102 | return -ENOMEM; |
| 103 | |
| 104 | au->base.destroy = ceph_auth_none_destroy_authorizer; |
| 105 | |
| 106 | ret = ceph_auth_none_build_authorizer(ac, au); |
| 107 | if (ret) { |
| 108 | kfree(au); |
| 109 | return ret; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 110 | } |
| 111 | |
Alex Elder | 74f1869 | 2012-05-16 15:16:39 -0500 | [diff] [blame] | 112 | auth->authorizer = (struct ceph_authorizer *) au; |
| 113 | auth->authorizer_buf = au->buf; |
| 114 | auth->authorizer_buf_len = au->buf_len; |
Ilya Dryomov | d71a95e | 2021-05-15 12:04:39 +0200 | [diff] [blame] | 115 | auth->authorizer_reply_buf = NULL; |
| 116 | auth->authorizer_reply_buf_len = 0; |
Alex Elder | 74f1869 | 2012-05-16 15:16:39 -0500 | [diff] [blame] | 117 | |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 118 | return 0; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | static const struct ceph_auth_client_ops ceph_auth_none_ops = { |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 122 | .reset = reset, |
| 123 | .destroy = destroy, |
| 124 | .is_authenticated = is_authenticated, |
Sage Weil | a41359f | 2010-05-25 15:39:06 -0700 | [diff] [blame] | 125 | .should_authenticate = should_authenticate, |
Tyler Hicks | 2cb33ca | 2013-06-20 13:13:59 -0700 | [diff] [blame] | 126 | .build_request = build_request, |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 127 | .handle_reply = handle_reply, |
| 128 | .create_authorizer = ceph_auth_none_create_authorizer, |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 129 | }; |
| 130 | |
| 131 | int ceph_auth_none_init(struct ceph_auth_client *ac) |
| 132 | { |
| 133 | struct ceph_auth_none_info *xi; |
| 134 | |
| 135 | dout("ceph_auth_none_init %p\n", ac); |
| 136 | xi = kzalloc(sizeof(*xi), GFP_NOFS); |
| 137 | if (!xi) |
| 138 | return -ENOMEM; |
| 139 | |
| 140 | xi->starting = true; |
Sage Weil | 4e7a5dc | 2009-11-18 16:19:57 -0800 | [diff] [blame] | 141 | |
| 142 | ac->protocol = CEPH_AUTH_NONE; |
| 143 | ac->private = xi; |
| 144 | ac->ops = &ceph_auth_none_ops; |
| 145 | return 0; |
| 146 | } |