96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/* RxRPC key type
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _KEYS_RXRPC_TYPE_H
|
||
|
|
#define _KEYS_RXRPC_TYPE_H
|
||
|
|
|
||
|
|
#include <linux/key.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* key type for AF_RXRPC keys
|
||
|
|
*/
|
||
|
|
extern struct key_type key_type_rxrpc;
|
||
|
|
|
||
|
|
extern struct key *rxrpc_get_null_key(const char *);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* RxRPC key for Kerberos IV (type-2 security)
|
||
|
|
*/
|
||
|
|
struct rxkad_key {
|
||
|
|
u32 vice_id;
|
||
|
|
u32 start; /* time at which ticket starts */
|
||
|
|
u32 expiry; /* time at which ticket expires */
|
||
|
|
u32 kvno; /* key version number */
|
||
|
|
u8 primary_flag; /* T if key for primary cell for this user */
|
||
|
|
u16 ticket_len; /* length of ticket[] */
|
||
|
|
u8 session_key[8]; /* DES session key */
|
||
|
|
u8 ticket[]; /* the encrypted ticket */
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* list of tokens attached to an rxrpc key
|
||
|
|
*/
|
||
|
|
struct rxrpc_key_token {
|
||
|
|
u16 security_index; /* RxRPC header security index */
|
||
|
|
bool no_leak_key; /* Don't copy the key to userspace */
|
||
|
|
struct rxrpc_key_token *next; /* the next token in the list */
|
||
|
|
union {
|
||
|
|
struct rxkad_key *kad;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* structure of raw payloads passed to add_key() or instantiate key
|
||
|
|
*/
|
||
|
|
struct rxrpc_key_data_v1 {
|
||
|
|
u16 security_index;
|
||
|
|
u16 ticket_length;
|
||
|
|
u32 expiry; /* time_t */
|
||
|
|
u32 kvno;
|
||
|
|
u8 session_key[8];
|
||
|
|
u8 ticket[];
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AF_RXRPC key payload derived from XDR format
|
||
|
|
* - based on openafs-1.4.10/src/auth/afs_token.xg
|
||
|
|
*/
|
||
|
|
#define AFSTOKEN_LENGTH_MAX 16384 /* max payload size */
|
||
|
|
#define AFSTOKEN_STRING_MAX 256 /* max small string length */
|
||
|
|
#define AFSTOKEN_DATA_MAX 64 /* max small data length */
|
||
|
|
#define AFSTOKEN_CELL_MAX 64 /* max cellname length */
|
||
|
|
#define AFSTOKEN_MAX 8 /* max tokens per payload */
|
||
|
|
#define AFSTOKEN_BDATALN_MAX 16384 /* max big data length */
|
||
|
|
#define AFSTOKEN_RK_TIX_MAX 12000 /* max RxKAD ticket size */
|
||
|
|
#define AFSTOKEN_GK_KEY_MAX 64 /* max GSSAPI key size */
|
||
|
|
#define AFSTOKEN_GK_TOKEN_MAX 16384 /* max GSSAPI token size */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Truncate a time64_t to the range from 1970 to 2106 as in the network
|
||
|
|
* protocol.
|
||
|
|
*/
|
||
|
|
static inline u32 rxrpc_time64_to_u32(time64_t time)
|
||
|
|
{
|
||
|
|
if (time < 0)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (time > UINT_MAX)
|
||
|
|
return UINT_MAX;
|
||
|
|
|
||
|
|
return (u32)time;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Extend u32 back to time64_t using the same 1970-2106 range.
|
||
|
|
*/
|
||
|
|
static inline time64_t rxrpc_u32_to_time64(u32 time)
|
||
|
|
{
|
||
|
|
return (time64_t)time;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _KEYS_RXRPC_TYPE_H */
|