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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  *      $FreeBSD$
27  */
28
29 #include <gssapi/gssapi.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <errno.h>
33
34 #include "mech_switch.h"
35 #include "name.h"
36
37 /*
38  * The implementation must reserve static storage for a
39  * gss_OID_desc object containing the value
40  * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
41  * "\x01\x02\x01\x01"},
42  * corresponding to an object-identifier value of
43  * {iso(1) member-body(2) United States(840) mit(113554)
44  * infosys(1) gssapi(2) generic(1) user_name(1)}.  The constant
45  * GSS_C_NT_USER_NAME should be initialized to point
46  * to that gss_OID_desc.
47  */
48 static gss_OID_desc GSS_C_NT_USER_NAME_storage =
49         {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x01"};
50 gss_OID GSS_C_NT_USER_NAME = &GSS_C_NT_USER_NAME_storage;
51
52 /*
53  * The implementation must reserve static storage for a
54  * gss_OID_desc object containing the value
55  * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
56  *              "\x01\x02\x01\x02"},
57  * corresponding to an object-identifier value of
58  * {iso(1) member-body(2) United States(840) mit(113554)
59  * infosys(1) gssapi(2) generic(1) machine_uid_name(2)}.
60  * The constant GSS_C_NT_MACHINE_UID_NAME should be
61  * initialized to point to that gss_OID_desc.
62  */
63 static gss_OID_desc GSS_C_NT_MACHINE_UID_NAME_storage =
64         {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x02"};
65 gss_OID GSS_C_NT_MACHINE_UID_NAME = &GSS_C_NT_MACHINE_UID_NAME_storage;
66
67 /*
68  * The implementation must reserve static storage for a
69  * gss_OID_desc object containing the value
70  * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
71  *              "\x01\x02\x01\x03"},
72  * corresponding to an object-identifier value of
73  * {iso(1) member-body(2) United States(840) mit(113554)
74  * infosys(1) gssapi(2) generic(1) string_uid_name(3)}.
75  * The constant GSS_C_NT_STRING_UID_NAME should be
76  * initialized to point to that gss_OID_desc.
77  */
78 static gss_OID_desc GSS_C_NT_STRING_UID_NAME_storage =
79         {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x03"};
80 gss_OID GSS_C_NT_STRING_UID_NAME = &GSS_C_NT_STRING_UID_NAME_storage;
81
82 /*
83  * The implementation must reserve static storage for a
84  * gss_OID_desc object containing the value
85  * {6, (void *)"\x2b\x06\x01\x05\x06\x02"},
86  * corresponding to an object-identifier value of
87  * {iso(1) org(3) dod(6) internet(1) security(5)
88  * nametypes(6) gss-host-based-services(2)).  The constant
89  * GSS_C_NT_HOSTBASED_SERVICE_X should be initialized to point
90  * to that gss_OID_desc.  This is a deprecated OID value, and
91  * implementations wishing to support hostbased-service names
92  * should instead use the GSS_C_NT_HOSTBASED_SERVICE OID,
93  * defined below, to identify such names;
94  * GSS_C_NT_HOSTBASED_SERVICE_X should be accepted a synonym
95  * for GSS_C_NT_HOSTBASED_SERVICE when presented as an input
96  * parameter, but should not be emitted by GSS-API
97  * implementations
98  */
99 static gss_OID_desc GSS_C_NT_HOSTBASED_SERVICE_X_storage =
100         {6, (void *)"\x2b\x06\x01\x05\x06\x02"};
101 gss_OID GSS_C_NT_HOSTBASED_SERVICE_X = &GSS_C_NT_HOSTBASED_SERVICE_X_storage;
102
103 /*
104  * The implementation must reserve static storage for a
105  * gss_OID_desc object containing the value
106  * {10, (void *)"\x2a\x86\x48\x86\xf7\x12"
107  *              "\x01\x02\x01\x04"}, corresponding to an
108  * object-identifier value of {iso(1) member-body(2)
109  * Unites States(840) mit(113554) infosys(1) gssapi(2)
110  * generic(1) service_name(4)}.  The constant
111  * GSS_C_NT_HOSTBASED_SERVICE should be initialized
112  * to point to that gss_OID_desc.
113  */
114 static gss_OID_desc GSS_C_NT_HOSTBASED_SERVICE_storage =
115         {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04"};
116 gss_OID GSS_C_NT_HOSTBASED_SERVICE = &GSS_C_NT_HOSTBASED_SERVICE_storage;
117
118 /*
119  * The implementation must reserve static storage for a
120  * gss_OID_desc object containing the value
121  * {6, (void *)"\x2b\x06\01\x05\x06\x03"},
122  * corresponding to an object identifier value of
123  * {1(iso), 3(org), 6(dod), 1(internet), 5(security),
124  * 6(nametypes), 3(gss-anonymous-name)}.  The constant
125  * and GSS_C_NT_ANONYMOUS should be initialized to point
126  * to that gss_OID_desc.
127  */
128 static gss_OID_desc GSS_C_NT_ANONYMOUS_storage =
129         {6, (void *)"\x2b\x06\01\x05\x06\x03"};
130 gss_OID GSS_C_NT_ANONYMOUS = &GSS_C_NT_ANONYMOUS_storage;
131
132 /*
133  * The implementation must reserve static storage for a
134  * gss_OID_desc object containing the value
135  * {6, (void *)"\x2b\x06\x01\x05\x06\x04"},
136  * corresponding to an object-identifier value of
137  * {1(iso), 3(org), 6(dod), 1(internet), 5(security),
138  * 6(nametypes), 4(gss-api-exported-name)}.  The constant
139  * GSS_C_NT_EXPORT_NAME should be initialized to point
140  * to that gss_OID_desc.
141  */
142 static gss_OID_desc GSS_C_NT_EXPORT_NAME_storage =
143         {6, (void *)"\x2b\x06\x01\x05\x06\x04"};
144 gss_OID GSS_C_NT_EXPORT_NAME = &GSS_C_NT_EXPORT_NAME_storage;
145
146 /*
147  *   This name form shall be represented by the Object Identifier {iso(1)
148  *   member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
149  *   krb5(2) krb5_name(1)}.  The recommended symbolic name for this type
150  *   is "GSS_KRB5_NT_PRINCIPAL_NAME".
151  */
152 static gss_OID_desc GSS_KRB5_NT_PRINCIPAL_NAME_storage =
153         {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02\x01"};
154 gss_OID GSS_KRB5_NT_PRINCIPAL_NAME = &GSS_KRB5_NT_PRINCIPAL_NAME_storage;
155
156 /*
157  * This name form shall be represented by the Object Identifier {iso(1)
158  * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
159  * generic(1) user_name(1)}.  The recommended symbolic name for this
160  * type is "GSS_KRB5_NT_USER_NAME".
161  */
162 gss_OID GSS_KRB5_NT_USER_NAME = &GSS_C_NT_USER_NAME_storage;
163
164 /*
165  * This name form shall be represented by the Object Identifier {iso(1)
166  * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
167  * generic(1) machine_uid_name(2)}.  The recommended symbolic name for
168  * this type is "GSS_KRB5_NT_MACHINE_UID_NAME".
169  */
170 gss_OID GSS_KRB5_NT_MACHINE_UID_NAME = &GSS_C_NT_MACHINE_UID_NAME_storage;
171
172 /*
173  * This name form shall be represented by the Object Identifier {iso(1)
174  * member-body(2) United States(840) mit(113554) infosys(1) gssapi(2)
175  * generic(1) string_uid_name(3)}.  The recommended symbolic name for
176  * this type is "GSS_KRB5_NT_STRING_UID_NAME".
177  */
178 gss_OID GSS_KRB5_NT_STRING_UID_NAME = &GSS_C_NT_STRING_UID_NAME_storage;
179
180 struct _gss_mechanism_name *
181 _gss_find_mn(struct _gss_name *name, gss_OID mech)
182 {
183         OM_uint32 major_status, minor_status;
184         struct _gss_mech_switch *m;
185         struct _gss_mechanism_name *mn;
186
187         SLIST_FOREACH(mn, &name->gn_mn, gmn_link) {
188                 if (_gss_oid_equal(mech, mn->gmn_mech_oid))
189                         break;
190         }
191
192         if (!mn) {
193                 /*
194                  * If this name is canonical (i.e. there is only an
195                  * MN but it is from a different mech), give up now.
196                  */
197                 if (!name->gn_value.value)
198                         return (0);
199
200                 m = _gss_find_mech_switch(mech);
201                 if (!m)
202                         return (0);
203
204                 mn = malloc(sizeof(struct _gss_mechanism_name));
205                 if (!mn)
206                         return (0);
207                 
208                 major_status = m->gm_import_name(&minor_status,
209                     &name->gn_value,
210                     (name->gn_type.elements
211                         ? &name->gn_type : GSS_C_NO_OID),
212                     &mn->gmn_name);
213                 if (major_status) {
214                         free(mn);
215                         return (0);
216                 }
217
218                 mn->gmn_mech = m;
219                 mn->gmn_mech_oid = &m->gm_mech_oid;
220                 SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
221         }
222         return (mn);
223 }
224
225 /*
226  * Make a name from an MN.
227  */
228 struct _gss_name *
229 _gss_make_name(struct _gss_mech_switch *m, gss_name_t new_mn)
230 {
231         OM_uint32 minor_status;
232         struct _gss_name *name;
233         struct _gss_mechanism_name *mn;
234
235         name = malloc(sizeof(struct _gss_name));
236         if (!name)
237                 return (0);
238         memset(name, 0, sizeof(struct _gss_name));
239
240         mn = malloc(sizeof(struct _gss_mechanism_name));
241         if (!mn) {
242                 free(name);
243                 return (0);
244         }
245
246         SLIST_INIT(&name->gn_mn);
247         mn->gmn_mech = m;
248         mn->gmn_mech_oid = &m->gm_mech_oid;
249         mn->gmn_name = new_mn;
250         SLIST_INSERT_HEAD(&name->gn_mn, mn, gmn_link);
251
252         return (name);
253 }
254