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
|
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* lib/gssapi/krb5/import_sec_context.c
*
* Copyright 1995,2004,2007,2008 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
/*
* import_sec_context.c - Internalize the security context.
*/
#include "gssapiP_krb5.h"
/* for serialization initialization functions */
#include "k5-int.h"
/*
* Fix up the OID of the mechanism so that uses the static version of
* the OID if possible.
*/
gss_OID krb5_gss_convert_static_mech_oid(oid)
gss_OID oid;
{
const gss_OID_desc *p;
OM_uint32 minor_status;
for (p = krb5_gss_oid_array; p->length; p++) {
if ((oid->length == p->length) &&
(memcmp(oid->elements, p->elements, p->length) == 0)) {
generic_gss_release_oid(&minor_status, &oid);
return (gss_OID) p;
}
}
return oid;
}
krb5_error_code
krb5_gss_ser_init (krb5_context context)
{
krb5_error_code code;
static krb5_error_code (KRB5_CALLCONV *const fns[])(krb5_context) = {
krb5_ser_context_init, krb5_ser_auth_context_init,
krb5_ser_ccache_init, krb5_ser_rcache_init, krb5_ser_keytab_init,
};
unsigned int i;
for (i = 0; i < sizeof(fns)/sizeof(fns[0]); i++)
if ((code = (fns[i])(context)) != 0)
return code;
return 0;
}
OM_uint32
krb5_gss_import_sec_context(minor_status, interprocess_token, context_handle)
OM_uint32 *minor_status;
gss_buffer_t interprocess_token;
gss_ctx_id_t *context_handle;
{
krb5_context context;
krb5_error_code kret = 0;
size_t blen;
krb5_gss_ctx_id_t ctx;
krb5_octet *ibp;
/* This is a bit screwy. We create a krb5 context because we need
one when calling the serialization code. However, one of the
objects we're unpacking is a krb5 context, so when we finish,
we can throw this one away. */
kret = krb5_gss_init_context(&context);
if (kret) {
*minor_status = kret;
return GSS_S_FAILURE;
}
kret = krb5_gss_ser_init(context);
if (kret) {
*minor_status = kret;
save_error_info(*minor_status, context);
krb5_free_context(context);
return GSS_S_FAILURE;
}
/* Assume a tragic failure */
ctx = (krb5_gss_ctx_id_t) NULL;
*minor_status = 0;
/* Internalize the context */
ibp = (krb5_octet *) interprocess_token->value;
blen = (size_t) interprocess_token->length;
kret = kg_ctx_internalize(context, (krb5_pointer *) &ctx, &ibp, &blen);
if (kret) {
*minor_status = (OM_uint32) kret;
save_error_info(*minor_status, context);
krb5_free_context(context);
return(GSS_S_FAILURE);
}
krb5_free_context(context);
/* intern the context handle */
if (! kg_save_ctx_id((gss_ctx_id_t) ctx)) {
(void)krb5_gss_delete_sec_context(minor_status,
(gss_ctx_id_t *) &ctx, NULL);
*minor_status = (OM_uint32) G_VALIDATE_FAILED;
return(GSS_S_FAILURE);
}
ctx->mech_used = krb5_gss_convert_static_mech_oid(ctx->mech_used);
*context_handle = (gss_ctx_id_t) ctx;
*minor_status = 0;
return (GSS_S_COMPLETE);
}
|
