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1 | #ifndef _FS_CEPH_AUTH_H |
2 | #define _FS_CEPH_AUTH_H | |
3 | ||
4 | #include "types.h" | |
5 | #include "buffer.h" | |
6 | ||
7 | /* | |
8 | * Abstract interface for communicating with the authenticate module. | |
9 | * There is some handshake that takes place between us and the monitor | |
10 | * to acquire the necessary keys. These are used to generate an | |
11 | * 'authorizer' that we use when connecting to a service (mds, osd). | |
12 | */ | |
13 | ||
14 | struct ceph_auth_client; | |
15 | struct ceph_authorizer; | |
16 | ||
17 | struct ceph_auth_client_ops { | |
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18 | const char *name; |
19 | ||
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20 | /* |
21 | * true if we are authenticated and can connect to | |
22 | * services. | |
23 | */ | |
24 | int (*is_authenticated)(struct ceph_auth_client *ac); | |
25 | ||
26 | /* | |
27 | * build requests and process replies during monitor | |
28 | * handshake. if handle_reply returns -EAGAIN, we build | |
29 | * another request. | |
30 | */ | |
31 | int (*build_request)(struct ceph_auth_client *ac, void *buf, void *end); | |
32 | int (*handle_reply)(struct ceph_auth_client *ac, int result, | |
33 | void *buf, void *end); | |
34 | ||
35 | /* | |
36 | * Create authorizer for connecting to a service, and verify | |
37 | * the response to authenticate the service. | |
38 | */ | |
39 | int (*create_authorizer)(struct ceph_auth_client *ac, int peer_type, | |
40 | struct ceph_authorizer **a, | |
41 | void **buf, size_t *len, | |
42 | void **reply_buf, size_t *reply_len); | |
43 | int (*verify_authorizer_reply)(struct ceph_auth_client *ac, | |
44 | struct ceph_authorizer *a, size_t len); | |
45 | void (*destroy_authorizer)(struct ceph_auth_client *ac, | |
46 | struct ceph_authorizer *a); | |
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47 | void (*invalidate_authorizer)(struct ceph_auth_client *ac, |
48 | int peer_type); | |
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49 | |
50 | /* reset when we (re)connect to a monitor */ | |
51 | void (*reset)(struct ceph_auth_client *ac); | |
52 | ||
53 | void (*destroy)(struct ceph_auth_client *ac); | |
54 | }; | |
55 | ||
56 | struct ceph_auth_client { | |
57 | u32 protocol; /* CEPH_AUTH_* */ | |
58 | void *private; /* for use by protocol implementation */ | |
59 | const struct ceph_auth_client_ops *ops; /* null iff protocol==0 */ | |
60 | ||
61 | bool negotiating; /* true if negotiating protocol */ | |
62 | const char *name; /* entity name */ | |
63 | u64 global_id; /* our unique id in system */ | |
64 | const char *secret; /* our secret key */ | |
65 | unsigned want_keys; /* which services we want */ | |
66 | }; | |
67 | ||
68 | extern struct ceph_auth_client *ceph_auth_init(const char *name, | |
69 | const char *secret); | |
70 | extern void ceph_auth_destroy(struct ceph_auth_client *ac); | |
71 | ||
72 | extern void ceph_auth_reset(struct ceph_auth_client *ac); | |
73 | ||
74 | extern int ceph_auth_build_hello(struct ceph_auth_client *ac, | |
75 | void *buf, size_t len); | |
76 | extern int ceph_handle_auth_reply(struct ceph_auth_client *ac, | |
77 | void *buf, size_t len, | |
78 | void *reply_buf, size_t reply_len); | |
79 | extern int ceph_entity_name_encode(const char *name, void **p, void *end); | |
80 | ||
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81 | extern int ceph_build_auth(struct ceph_auth_client *ac, |
82 | void *msg_buf, size_t msg_len); | |
83 | ||
84 | extern int ceph_auth_is_authenticated(struct ceph_auth_client *ac); | |
85 | ||
4e7a5dcd | 86 | #endif |