xref: /linux/net/ceph/auth_x_protocol.h (revision 762f99f4f3cb41a775b5157dd761217beba65873)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __FS_CEPH_AUTH_X_PROTOCOL
3 #define __FS_CEPH_AUTH_X_PROTOCOL
4 
5 #define CEPHX_GET_AUTH_SESSION_KEY      0x0100
6 #define CEPHX_GET_PRINCIPAL_SESSION_KEY 0x0200
7 #define CEPHX_GET_ROTATING_KEY          0x0400
8 
9 /* common bits */
10 struct ceph_x_ticket_blob {
11 	__u8 struct_v;
12 	__le64 secret_id;
13 	__le32 blob_len;
14 	char blob[];
15 } __attribute__ ((packed));
16 
17 
18 /* common request/reply headers */
19 struct ceph_x_request_header {
20 	__le16 op;
21 } __attribute__ ((packed));
22 
23 struct ceph_x_reply_header {
24 	__le16 op;
25 	__le32 result;
26 } __attribute__ ((packed));
27 
28 
29 /* authenticate handshake */
30 
31 /* initial hello (no reply header) */
32 struct ceph_x_server_challenge {
33 	__u8 struct_v;
34 	__le64 server_challenge;
35 } __attribute__ ((packed));
36 
37 struct ceph_x_authenticate {
38 	__u8 struct_v;
39 	__le64 client_challenge;
40 	__le64 key;
41 	/* old_ticket blob */
42 	/* nautilus+: other_keys */
43 } __attribute__ ((packed));
44 
45 struct ceph_x_service_ticket_request {
46 	__u8 struct_v;
47 	__le32 keys;
48 } __attribute__ ((packed));
49 
50 struct ceph_x_challenge_blob {
51 	__le64 server_challenge;
52 	__le64 client_challenge;
53 } __attribute__ ((packed));
54 
55 
56 
57 /* authorize handshake */
58 
59 /*
60  * The authorizer consists of two pieces:
61  *  a - service id, ticket blob
62  *  b - encrypted with session key
63  */
64 struct ceph_x_authorize_a {
65 	__u8 struct_v;
66 	__le64 global_id;
67 	__le32 service_id;
68 	struct ceph_x_ticket_blob ticket_blob;
69 } __attribute__ ((packed));
70 
71 struct ceph_x_authorize_b {
72 	__u8 struct_v;
73 	__le64 nonce;
74 	__u8 have_challenge;
75 	__le64 server_challenge_plus_one;
76 } __attribute__ ((packed));
77 
78 struct ceph_x_authorize_challenge {
79 	__u8 struct_v;
80 	__le64 server_challenge;
81 } __attribute__ ((packed));
82 
83 struct ceph_x_authorize_reply {
84 	__u8 struct_v;
85 	__le64 nonce_plus_one;
86 } __attribute__ ((packed));
87 
88 
89 /*
90  * encryption bundle
91  */
92 #define CEPHX_ENC_MAGIC 0xff009cad8826aa55ull
93 
94 struct ceph_x_encrypt_header {
95 	__u8 struct_v;
96 	__le64 magic;
97 } __attribute__ ((packed));
98 
99 #endif
100