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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* * linux/include/linux/gss_api.h * * Somewhat simplified version of the gss api. * * Dug Song <dugsong@monkey.org> * Andy Adamson <andros@umich.edu> * Bruce Fields <bfields@umich.edu> * Copyright (c) 2000 The Regents of the University of Michigan * * $Id$ */ #ifndef _LINUX_SUNRPC_GSS_API_H #define _LINUX_SUNRPC_GSS_API_H #ifdef __KERNEL__ #include <linux/sunrpc/xdr.h> /* The mechanism-independent gss-api context: */ struct gss_ctx { struct gss_api_mech *mech_type; void *internal_ctx_id; }; #define GSS_C_NO_BUFFER ((struct xdr_netobj) 0) #define GSS_C_NO_CONTEXT ((struct gss_ctx *) 0) #define GSS_C_NULL_OID ((struct xdr_netobj) 0) /*XXX arbitrary length - is this set somewhere? */ #define GSS_OID_MAX_LEN 32 /* gss-api prototypes; note that these are somewhat simplified versions of * the prototypes specified in RFC 2744. */ u32 gss_import_sec_context( struct xdr_netobj *input_token, struct gss_api_mech *mech, struct gss_ctx **ctx_id); u32 gss_get_mic( struct gss_ctx *ctx_id, u32 qop, struct xdr_netobj *message_buffer, struct xdr_netobj *message_token); u32 gss_verify_mic( struct gss_ctx *ctx_id, struct xdr_netobj *signbuf, struct xdr_netobj *checksum, u32 *qstate); u32 gss_delete_sec_context( struct gss_ctx **ctx_id); /* We maintain a list of the pseudoflavors (equivalently, mechanism-qop-service * triples) that we currently support: */ struct sup_sec_triple { struct list_head triples; u32 pseudoflavor; struct gss_api_mech *mech; u32 qop; u32 service; }; int gss_register_triple(u32 pseudoflavor, struct gss_api_mech *mech, u32 qop, u32 service); int gss_unregister_triple(u32 pseudoflavor); int gss_pseudoflavor_supported(u32 pseudoflavor); u32 gss_cmp_triples(u32 oid_len, char *oid_data, u32 qop, u32 service); u32 gss_get_pseudoflavor(struct gss_ctx *ctx_id, u32 qop, u32 service); u32 gss_pseudoflavor_to_service(u32 pseudoflavor); /* Both return NULL on failure: */ struct gss_api_mech * gss_pseudoflavor_to_mech(u32 pseudoflavor); int gss_pseudoflavor_to_mechOID(u32 pseudoflavor, struct xdr_netobj *mech); /* Different mechanisms (e.g., krb5 or spkm3) may implement gss-api, and * mechanisms may be dynamically registered or unregistered by modules. * Our only built-in mechanism is a trivial debugging mechanism that provides * no actual security; the following function registers that mechanism: */ void gss_mech_register_debug(void); /* Each mechanism is described by the following struct: */ struct gss_api_mech { struct xdr_netobj gm_oid; struct list_head gm_list; atomic_t gm_count; struct gss_api_ops *gm_ops; }; /* and must provide the following operations: */ struct gss_api_ops { char *name; u32 (*gss_import_sec_context)( struct xdr_netobj *input_token, struct gss_ctx *ctx_id); u32 (*gss_get_mic)( struct gss_ctx *ctx_id, u32 qop, struct xdr_netobj *message_buffer, struct xdr_netobj *message_token); u32 (*gss_verify_mic)( struct gss_ctx *ctx_id, struct xdr_netobj *signbuf, struct xdr_netobj *checksum, u32 *qstate); void (*gss_delete_sec_context)( void *internal_ctx_id); }; /* Returns nonzero on failure. */ int gss_mech_register(struct xdr_netobj *, struct gss_api_ops *); /* Returns nonzero iff someone still has a reference to this mech. */ int gss_mech_unregister(struct gss_api_mech *); /* Returns nonzer iff someone still has a reference to some mech. */ int gss_mech_unregister_all(void); /* returns a mechanism descriptor given an OID, an increments the mechanism's * reference count. */ struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *); /* Just increments the mechanism's reference count and returns its input: */ struct gss_api_mech * gss_mech_get(struct gss_api_mech *); /* Returns nonzero iff you've released the last reference to this mech. * Note that for every succesful gss_get_mech call there must be exactly * one corresponding call to gss_mech_put.*/ int gss_mech_put(struct gss_api_mech *); #endif /* __KERNEL__ */ #endif /* _LINUX_SUNRPC_GSS_API_H */ |