1 /* #pragma ident "@(#)g_inquire_names.c 1.16 04/02/23 SMI" */
2
3 /*
4 * Copyright 1996 by Sun Microsystems, Inc.
5 *
6 * Permission to use, copy, modify, distribute, and sell this software
7 * and its documentation for any purpose is hereby granted without fee,
8 * provided that the above copyright notice appears in all copies and
9 * that both that copyright notice and this permission notice appear in
10 * supporting documentation, and that the name of Sun Microsystems not be used
11 * in advertising or publicity pertaining to distribution of the software
12 * without specific, written prior permission. Sun Microsystems makes no
13 * representations about the suitability of this software for any
14 * purpose. It is provided "as is" without express or implied warranty.
15 *
16 * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
20 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
21 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
22 * PERFORMANCE OF THIS SOFTWARE.
23 */
24
25 /*
26 * glue routine for gss_inquire_context
27 */
28
29 #include "mglueP.h"
30
31 #define MAX_MECH_OID_PAIRS 32
32
33 /* Last argument new for V2 */
34 OM_uint32 KRB5_CALLCONV
gss_inquire_names_for_mech(OM_uint32 * minor_status,gss_OID mechanism,gss_OID_set * name_types)35 gss_inquire_names_for_mech(OM_uint32 *minor_status, gss_OID mechanism,
36 gss_OID_set *name_types)
37 {
38 OM_uint32 status;
39 gss_OID selected_mech = GSS_C_NO_OID, public_mech;
40 gss_mechanism mech;
41
42 /* Initialize outputs. */
43
44 if (minor_status != NULL)
45 *minor_status = 0;
46
47 if (name_types != NULL)
48 *name_types = GSS_C_NO_OID_SET;
49
50 /* Validate arguments. */
51
52 if (minor_status == NULL)
53 return (GSS_S_CALL_INACCESSIBLE_WRITE);
54
55 if (name_types == NULL)
56 return (GSS_S_CALL_INACCESSIBLE_WRITE);
57
58 /*
59 * select the approprate underlying mechanism routine and
60 * call it.
61 */
62
63 status = gssint_select_mech_type(minor_status, mechanism,
64 &selected_mech);
65 if (status != GSS_S_COMPLETE)
66 return (status);
67
68 mech = gssint_get_mechanism(selected_mech);
69 if (mech == NULL)
70 return GSS_S_BAD_MECH;
71 else if (mech->gss_inquire_names_for_mech == NULL)
72 return GSS_S_UNAVAILABLE;
73 public_mech = gssint_get_public_oid(selected_mech);
74 status = mech->gss_inquire_names_for_mech(minor_status, public_mech,
75 name_types);
76 if (status != GSS_S_COMPLETE)
77 map_error(minor_status, mech);
78
79 return status;
80 }
81
82 static OM_uint32
val_inq_mechs4name_args(OM_uint32 * minor_status,const gss_name_t input_name,gss_OID_set * mech_set)83 val_inq_mechs4name_args(
84 OM_uint32 *minor_status,
85 const gss_name_t input_name,
86 gss_OID_set *mech_set)
87 {
88
89 /* Initialize outputs. */
90 if (minor_status != NULL)
91 *minor_status = 0;
92
93 if (mech_set != NULL)
94 *mech_set = GSS_C_NO_OID_SET;
95
96 /* Validate arguments.e
97 */
98 if (minor_status == NULL)
99 return (GSS_S_CALL_INACCESSIBLE_WRITE);
100
101 if (input_name == GSS_C_NO_NAME)
102 return (GSS_S_BAD_NAME);
103
104 return (GSS_S_COMPLETE);
105 }
106
107 static int
mech_supports_nametype(gss_OID mech_oid,gss_OID name_type)108 mech_supports_nametype(gss_OID mech_oid, gss_OID name_type)
109 {
110 OM_uint32 status, minor;
111 gss_OID_set types = GSS_C_NO_OID_SET;
112 int present;
113
114 status = gss_inquire_names_for_mech(&minor, mech_oid, &types);
115 if (status != GSS_S_COMPLETE)
116 return (0);
117 status = gss_test_oid_set_member(&minor, name_type, types, &present);
118 (void) gss_release_oid_set(&minor, &types);
119 return (status == GSS_S_COMPLETE && present);
120 }
121
122 OM_uint32 KRB5_CALLCONV
gss_inquire_mechs_for_name(OM_uint32 * minor_status,const gss_name_t input_name,gss_OID_set * mech_set)123 gss_inquire_mechs_for_name(OM_uint32 *minor_status,
124 const gss_name_t input_name, gss_OID_set *mech_set)
125 {
126 OM_uint32 status, tmpmin;
127 gss_OID_set all_mechs = GSS_C_NO_OID_SET;
128 gss_OID_set mechs = GSS_C_NO_OID_SET;
129 gss_OID mech_oid, name_type;
130 gss_buffer_desc name_buffer = GSS_C_EMPTY_BUFFER;
131 size_t i;
132
133 status = val_inq_mechs4name_args(minor_status, input_name, mech_set);
134 if (status != GSS_S_COMPLETE)
135 return (status);
136
137 status = gss_display_name(minor_status, input_name, &name_buffer,
138 &name_type);
139 if (status != GSS_S_COMPLETE)
140 goto cleanup;
141 status = gss_indicate_mechs(minor_status, &all_mechs);
142 if (status != GSS_S_COMPLETE)
143 goto cleanup;
144 status = gss_create_empty_oid_set(minor_status, &mechs);
145 if (status != GSS_S_COMPLETE)
146 goto cleanup;
147 for (i = 0; i < all_mechs->count; i++) {
148 mech_oid = &all_mechs->elements[i];
149 if (mech_supports_nametype(mech_oid, name_type)) {
150 status = gss_add_oid_set_member(minor_status, mech_oid, &mechs);
151 if (status != GSS_S_COMPLETE)
152 goto cleanup;
153 }
154 }
155
156 *mech_set = mechs;
157 mechs = GSS_C_NO_OID_SET;
158
159 cleanup:
160 (void) gss_release_buffer(&tmpmin, &name_buffer);
161 (void) gss_release_oid_set(&tmpmin, &all_mechs);
162 (void) gss_release_oid_set(&tmpmin, &mechs);
163 return (status);
164 }
165