Line data Source code
1 : /*-
2 : * Copyright (c) 2005 Doug Rabson
3 : * All rights reserved.
4 : *
5 : * Redistribution and use in source and binary forms, with or without
6 : * modification, are permitted provided that the following conditions
7 : * are met:
8 : * 1. Redistributions of source code must retain the above copyright
9 : * notice, this list of conditions and the following disclaimer.
10 : * 2. Redistributions in binary form must reproduce the above copyright
11 : * notice, this list of conditions and the following disclaimer in the
12 : * documentation and/or other materials provided with the distribution.
13 : *
14 : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 : * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 : * SUCH DAMAGE.
25 : *
26 : * $FreeBSD: src/lib/libgssapi/gss_acquire_cred.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27 : */
28 :
29 : #include "mech_locl.h"
30 :
31 : GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
32 0 : gss_acquire_cred(OM_uint32 *minor_status,
33 : const gss_name_t desired_name,
34 : OM_uint32 time_req,
35 : const gss_OID_set desired_mechs,
36 : gss_cred_usage_t cred_usage,
37 : gss_cred_id_t *output_cred_handle,
38 : gss_OID_set *actual_mechs,
39 : OM_uint32 *time_rec)
40 : {
41 : OM_uint32 major_status;
42 0 : gss_OID_set mechs = desired_mechs;
43 : gss_OID_set_desc set;
44 0 : struct _gss_name *name = (struct _gss_name *) desired_name;
45 : gssapi_mech_interface m;
46 : struct _gss_cred *cred;
47 : struct _gss_mechanism_cred *mc;
48 : OM_uint32 min_time, cred_time;
49 : size_t i;
50 :
51 0 : *minor_status = 0;
52 0 : if (output_cred_handle == NULL)
53 0 : return GSS_S_CALL_INACCESSIBLE_READ;
54 0 : if (actual_mechs)
55 0 : *actual_mechs = GSS_C_NO_OID_SET;
56 0 : if (time_rec)
57 0 : *time_rec = 0;
58 :
59 0 : _gss_load_mech();
60 :
61 : /*
62 : * First make sure that at least one of the requested
63 : * mechanisms is one that we support.
64 : */
65 0 : if (mechs) {
66 0 : for (i = 0; i < mechs->count; i++) {
67 : int t;
68 0 : gss_test_oid_set_member(minor_status,
69 0 : &mechs->elements[i], _gss_mech_oids, &t);
70 0 : if (t)
71 0 : break;
72 : }
73 0 : if (i == mechs->count) {
74 0 : *minor_status = 0;
75 0 : return (GSS_S_BAD_MECH);
76 : }
77 : }
78 :
79 0 : if (actual_mechs) {
80 0 : major_status = gss_create_empty_oid_set(minor_status,
81 : actual_mechs);
82 0 : if (major_status)
83 0 : return (major_status);
84 : }
85 :
86 0 : cred = malloc(sizeof(struct _gss_cred));
87 0 : if (!cred) {
88 0 : if (actual_mechs)
89 0 : gss_release_oid_set(minor_status, actual_mechs);
90 0 : *minor_status = ENOMEM;
91 0 : return (GSS_S_FAILURE);
92 : }
93 0 : HEIM_SLIST_INIT(&cred->gc_mc);
94 :
95 0 : if (mechs == GSS_C_NO_OID_SET)
96 0 : mechs = _gss_mech_oids;
97 :
98 0 : set.count = 1;
99 0 : min_time = GSS_C_INDEFINITE;
100 0 : for (i = 0; i < mechs->count; i++) {
101 0 : struct _gss_mechanism_name *mn = NULL;
102 :
103 0 : m = __gss_get_mechanism(&mechs->elements[i]);
104 0 : if (!m)
105 0 : continue;
106 :
107 0 : if (desired_name != GSS_C_NO_NAME) {
108 0 : major_status = _gss_find_mn(minor_status, name,
109 0 : &mechs->elements[i], &mn);
110 0 : if (major_status != GSS_S_COMPLETE)
111 0 : continue;
112 : }
113 :
114 0 : mc = malloc(sizeof(struct _gss_mechanism_cred));
115 0 : if (!mc) {
116 0 : continue;
117 : }
118 0 : mc->gmc_mech = m;
119 0 : mc->gmc_mech_oid = &m->gm_mech_oid;
120 :
121 : /*
122 : * XXX Probably need to do something with actual_mechs.
123 : */
124 0 : set.elements = &mechs->elements[i];
125 0 : major_status = m->gm_acquire_cred(minor_status,
126 : (desired_name != GSS_C_NO_NAME
127 0 : ? mn->gmn_name : GSS_C_NO_NAME),
128 : time_req, &set, cred_usage,
129 : &mc->gmc_cred, NULL, &cred_time);
130 0 : if (major_status) {
131 0 : free(mc);
132 0 : continue;
133 : }
134 0 : if (cred_time < min_time)
135 0 : min_time = cred_time;
136 :
137 0 : if (actual_mechs) {
138 0 : major_status = gss_add_oid_set_member(minor_status,
139 : mc->gmc_mech_oid, actual_mechs);
140 0 : if (major_status) {
141 0 : m->gm_release_cred(minor_status,
142 : &mc->gmc_cred);
143 0 : free(mc);
144 0 : continue;
145 : }
146 : }
147 :
148 0 : HEIM_SLIST_INSERT_HEAD(&cred->gc_mc, mc, gmc_link);
149 : }
150 :
151 : /*
152 : * If we didn't manage to create a single credential, return
153 : * an error.
154 : */
155 0 : if (!HEIM_SLIST_FIRST(&cred->gc_mc)) {
156 0 : free(cred);
157 0 : if (actual_mechs)
158 0 : gss_release_oid_set(minor_status, actual_mechs);
159 0 : *minor_status = 0;
160 0 : return (GSS_S_NO_CRED);
161 : }
162 :
163 0 : if (time_rec)
164 0 : *time_rec = min_time;
165 0 : *output_cred_handle = (gss_cred_id_t) cred;
166 0 : *minor_status = 0;
167 0 : return (GSS_S_COMPLETE);
168 : }
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