1 /*
2 * Copyright 2008 by the Massachusetts Institute of Technology.
3 * All Rights Reserved.
4 *
5 * Export of this software from the United States of America may
6 * require a specific license from the United States Government.
7 * It is the responsibility of any person or organization contemplating
8 * export to obtain such a license before exporting.
9 *
10 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
11 * distribute this software and its documentation for any purpose and
12 * without fee is hereby granted, provided that the above copyright
13 * notice appear in all copies and that both that copyright notice and
14 * this permission notice appear in supporting documentation, and that
15 * the name of M.I.T. not be used in advertising or publicity pertaining
16 * to distribution of the software without specific, written prior
17 * permission. Furthermore if you modify this software you must label
18 * your software as modified software and not distribute it in such a
19 * fashion that it might be confused with the original M.I.T. software.
20 * M.I.T. makes no representations about the suitability of
21 * this software for any purpose. It is provided "as is" without express
22 * or implied warranty.
23 */
24
25 /* Glue routine for gss_set_sec_context_option */
26
27 #include "mglueP.h"
28 #ifdef HAVE_STDLIB_H
29 #include <stdlib.h>
30 #endif
31 #include <string.h>
32 #include <errno.h>
33
34 OM_uint32 KRB5_CALLCONV
gss_set_sec_context_option(OM_uint32 * minor_status,gss_ctx_id_t * context_handle,const gss_OID desired_object,const gss_buffer_t value)35 gss_set_sec_context_option (OM_uint32 *minor_status,
36 gss_ctx_id_t *context_handle,
37 const gss_OID desired_object,
38 const gss_buffer_t value)
39 {
40 OM_uint32 status, minor;
41 gss_union_ctx_id_t ctx;
42 gss_mechanism mech;
43 gss_ctx_id_t internal_ctx = GSS_C_NO_CONTEXT;
44
45 if (minor_status == NULL)
46 return GSS_S_CALL_INACCESSIBLE_WRITE;
47 *minor_status = 0;
48
49 if (context_handle == NULL)
50 return GSS_S_CALL_INACCESSIBLE_WRITE;
51
52 /*
53 * select the approprate underlying mechanism routine and
54 * call it.
55 */
56
57 ctx = (gss_union_ctx_id_t) *context_handle;
58 if (ctx == NULL) {
59 mech = gssint_get_mechanism (GSS_C_NO_OID);
60 } else {
61 mech = gssint_get_mechanism (ctx->mech_type);
62 }
63
64 if (mech == NULL)
65 return GSS_S_BAD_MECH;
66 if (mech->gss_set_sec_context_option == NULL)
67 return GSS_S_UNAVAILABLE;
68
69 status = mech->gss_set_sec_context_option(minor_status,
70 ctx ? &ctx->internal_ctx_id :
71 &internal_ctx,
72 desired_object,
73 value);
74 if (status != GSS_S_COMPLETE) {
75 map_error(minor_status, mech);
76 return status;
77 }
78
79 if (ctx == NULL && internal_ctx != GSS_C_NO_CONTEXT) {
80 status = gssint_create_union_context(minor_status, &mech->mech_type,
81 &ctx);
82 if (status != GSS_S_COMPLETE) {
83 gssint_delete_internal_sec_context(&minor, ctx->mech_type,
84 &internal_ctx, GSS_C_NO_BUFFER);
85 return status;
86 }
87
88 ctx->internal_ctx_id = internal_ctx;
89 *context_handle = (gss_ctx_id_t)ctx;
90 }
91
92 return GSS_S_COMPLETE;
93 }
94