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(minor_status,mechanism,name_types)35 gss_inquire_names_for_mech(minor_status, mechanism, name_types)
36
37 OM_uint32 * minor_status;
38 gss_OID mechanism;
39 gss_OID_set * name_types;
40
41 {
42 OM_uint32 status;
43 gss_OID selected_mech = GSS_C_NO_OID, public_mech;
44 gss_mechanism mech;
45
46 /* Initialize outputs. */
47
48 if (minor_status != NULL)
49 *minor_status = 0;
50
51 if (name_types != NULL)
52 *name_types = GSS_C_NO_OID_SET;
53
54 /* Validate arguments. */
55
56 if (minor_status == NULL)
57 return (GSS_S_CALL_INACCESSIBLE_WRITE);
58
59 if (name_types == NULL)
60 return (GSS_S_CALL_INACCESSIBLE_WRITE);
61
62 /*
63 * select the approprate underlying mechanism routine and
64 * call it.
65 */
66
67 status = gssint_select_mech_type(minor_status, mechanism,
68 &selected_mech);
69 if (status != GSS_S_COMPLETE)
70 return (status);
71
72 mech = gssint_get_mechanism(selected_mech);
73 if (mech == NULL)
74 return GSS_S_BAD_MECH;
75 else if (mech->gss_inquire_names_for_mech == NULL)
76 return GSS_S_UNAVAILABLE;
77 public_mech = gssint_get_public_oid(selected_mech);
78 status = mech->gss_inquire_names_for_mech(minor_status, public_mech,
79 name_types);
80 if (status != GSS_S_COMPLETE)
81 map_error(minor_status, mech);
82
83 return status;
84 }
85
86 static OM_uint32
val_inq_mechs4name_args(OM_uint32 * minor_status,const gss_name_t input_name,gss_OID_set * mech_set)87 val_inq_mechs4name_args(
88 OM_uint32 *minor_status,
89 const gss_name_t input_name,
90 gss_OID_set *mech_set)
91 {
92
93 /* Initialize outputs. */
94 if (minor_status != NULL)
95 *minor_status = 0;
96
97 if (mech_set != NULL)
98 *mech_set = GSS_C_NO_OID_SET;
99
100 /* Validate arguments.e
101 */
102 if (minor_status == NULL)
103 return (GSS_S_CALL_INACCESSIBLE_WRITE);
104
105 if (input_name == GSS_C_NO_NAME)
106 return (GSS_S_BAD_NAME);
107
108 return (GSS_S_COMPLETE);
109 }
110
111 static int
mech_supports_nametype(gss_OID mech_oid,gss_OID name_type)112 mech_supports_nametype(gss_OID mech_oid, gss_OID name_type)
113 {
114 OM_uint32 status, minor;
115 gss_OID_set types = GSS_C_NO_OID_SET;
116 int present;
117
118 status = gss_inquire_names_for_mech(&minor, mech_oid, &types);
119 if (status != GSS_S_COMPLETE)
120 return (0);
121 status = gss_test_oid_set_member(&minor, name_type, types, &present);
122 (void) gss_release_oid_set(&minor, &types);
123 return (status == GSS_S_COMPLETE && present);
124 }
125
126 OM_uint32 KRB5_CALLCONV
gss_inquire_mechs_for_name(OM_uint32 * minor_status,const gss_name_t input_name,gss_OID_set * mech_set)127 gss_inquire_mechs_for_name(OM_uint32 *minor_status,
128 const gss_name_t input_name, gss_OID_set *mech_set)
129 {
130 OM_uint32 status, tmpmin;
131 gss_OID_set all_mechs = GSS_C_NO_OID_SET;
132 gss_OID_set mechs = GSS_C_NO_OID_SET;
133 gss_OID mech_oid, name_type;
134 gss_buffer_desc name_buffer = GSS_C_EMPTY_BUFFER;
135 size_t i;
136
137 status = val_inq_mechs4name_args(minor_status, input_name, mech_set);
138 if (status != GSS_S_COMPLETE)
139 return (status);
140
141 status = gss_display_name(minor_status, input_name, &name_buffer,
142 &name_type);
143 if (status != GSS_S_COMPLETE)
144 goto cleanup;
145 status = gss_indicate_mechs(minor_status, &all_mechs);
146 if (status != GSS_S_COMPLETE)
147 goto cleanup;
148 status = gss_create_empty_oid_set(minor_status, &mechs);
149 if (status != GSS_S_COMPLETE)
150 goto cleanup;
151 for (i = 0; i < all_mechs->count; i++) {
152 mech_oid = &all_mechs->elements[i];
153 if (mech_supports_nametype(mech_oid, name_type)) {
154 status = gss_add_oid_set_member(minor_status, mech_oid, &mechs);
155 if (status != GSS_S_COMPLETE)
156 goto cleanup;
157 }
158 }
159
160 *mech_set = mechs;
161 mechs = GSS_C_NO_OID_SET;
162
163 cleanup:
164 (void) gss_release_buffer(&tmpmin, &name_buffer);
165 (void) gss_release_oid_set(&tmpmin, &all_mechs);
166 (void) gss_release_oid_set(&tmpmin, &mechs);
167 return (status);
168 }
169