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1 /*
2  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * 3. Neither the name of the Institute nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35
36 #include "kadm5_locl.h"
37
38 RCSID("$Id$");
39
40 #define set_value(X, V) do { if((X) == NULL) (X) = malloc(sizeof(*(X))); *(X) = V; } while(0)
41 #define set_null(X)     do { if((X) != NULL) free((X)); (X) = NULL; } while (0)
42
43 static void
44 attr_to_flags(unsigned attr, HDBFlags *flags)
45 {
46     flags->postdate =           !(attr & KRB5_KDB_DISALLOW_POSTDATED);
47     flags->forwardable =        !(attr & KRB5_KDB_DISALLOW_FORWARDABLE);
48     flags->initial =           !!(attr & KRB5_KDB_DISALLOW_TGT_BASED);
49     flags->renewable =          !(attr & KRB5_KDB_DISALLOW_RENEWABLE);
50     flags->proxiable =          !(attr & KRB5_KDB_DISALLOW_PROXIABLE);
51     /* DUP_SKEY */
52     flags->invalid =           !!(attr & KRB5_KDB_DISALLOW_ALL_TIX);
53     flags->require_preauth =   !!(attr & KRB5_KDB_REQUIRES_PRE_AUTH);
54     /* HW_AUTH */
55     flags->server =             !(attr & KRB5_KDB_DISALLOW_SVR);
56     flags->change_pw =         !!(attr & KRB5_KDB_PWCHANGE_SERVICE);
57     flags->client =             1; /* XXX */
58     flags->ok_as_delegate =    !!(attr & KRB5_KDB_OK_AS_DELEGATE);
59     flags->trusted_for_delegation = !!(attr & KRB5_KDB_TRUSTED_FOR_DELEGATION);
60     flags->allow_kerberos4 =   !!(attr & KRB5_KDB_ALLOW_KERBEROS4);
61     flags->allow_digest =      !!(attr & KRB5_KDB_ALLOW_DIGEST);
62 }
63
64 /*
65  * Modify the `ent' according to `tl_data'.
66  */
67
68 static kadm5_ret_t
69 perform_tl_data(krb5_context context,
70                 HDB *db,
71                 hdb_entry_ex *ent,
72                 const krb5_tl_data *tl_data)
73 {
74     kadm5_ret_t ret = 0;
75
76     if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
77         heim_utf8_string pw = tl_data->tl_data_contents;
78
79         if (pw[tl_data->tl_data_length] != '\0')
80             return KADM5_BAD_TL_TYPE;
81
82         ret = hdb_entry_set_password(context, db, &ent->entry, pw);
83
84     } else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
85         unsigned char *s;
86         time_t t;
87
88         if (tl_data->tl_data_length != 4)
89             return KADM5_BAD_TL_TYPE;
90
91         s = tl_data->tl_data_contents;
92
93         t = s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
94
95         ret = hdb_entry_set_pw_change_time(context, &ent->entry, t);
96
97     } else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
98         HDB_extension ext;
99
100         ret = decode_HDB_extension(tl_data->tl_data_contents,
101                                    tl_data->tl_data_length,
102                                    &ext,
103                                    NULL);
104         if (ret)
105             return KADM5_BAD_TL_TYPE;
106
107         ret = hdb_replace_extension(context, &ent->entry, &ext);
108         free_HDB_extension(&ext);
109     } else {
110         return KADM5_BAD_TL_TYPE;
111     }
112     return ret;
113 }
114
115 static void
116 default_flags(hdb_entry_ex *ent, int server)
117 {
118     ent->entry.flags.client      = 1;
119     ent->entry.flags.server      = !!server;
120     ent->entry.flags.forwardable = 1;
121     ent->entry.flags.proxiable   = 1;
122     ent->entry.flags.renewable   = 1;
123     ent->entry.flags.postdate    = 1;
124 }
125
126
127 /*
128  * Create the hdb entry `ent' based on data from `princ' with
129  * `princ_mask' specifying what fields to be gotten from there and
130  * `mask' specifying what fields we want filled in.
131  */
132
133 kadm5_ret_t
134 _kadm5_setup_entry(kadm5_server_context *context,
135                    hdb_entry_ex *ent,
136                    uint32_t mask,
137                    kadm5_principal_ent_t princ,
138                    uint32_t princ_mask,
139                    kadm5_principal_ent_t def,
140                    uint32_t def_mask)
141 {
142     if(mask & KADM5_PRINC_EXPIRE_TIME
143        && princ_mask & KADM5_PRINC_EXPIRE_TIME) {
144         if (princ->princ_expire_time)
145             set_value(ent->entry.valid_end, princ->princ_expire_time);
146         else
147             set_null(ent->entry.valid_end);
148     }
149     if(mask & KADM5_PW_EXPIRATION
150        && princ_mask & KADM5_PW_EXPIRATION) {
151         if (princ->pw_expiration)
152             set_value(ent->entry.pw_end, princ->pw_expiration);
153         else
154             set_null(ent->entry.pw_end);
155     }
156     if(mask & KADM5_ATTRIBUTES) {
157         if (princ_mask & KADM5_ATTRIBUTES) {
158             attr_to_flags(princ->attributes, &ent->entry.flags);
159         } else if(def_mask & KADM5_ATTRIBUTES) {
160             attr_to_flags(def->attributes, &ent->entry.flags);
161             ent->entry.flags.invalid = 0;
162         } else {
163             default_flags(ent, 1);
164         }
165     }
166
167     if(mask & KADM5_MAX_LIFE) {
168         if(princ_mask & KADM5_MAX_LIFE) {
169             if(princ->max_life)
170               set_value(ent->entry.max_life, princ->max_life);
171             else
172               set_null(ent->entry.max_life);
173         } else if(def_mask & KADM5_MAX_LIFE) {
174             if(def->max_life)
175               set_value(ent->entry.max_life, def->max_life);
176             else
177               set_null(ent->entry.max_life);
178         }
179     }
180     if(mask & KADM5_KVNO
181        && princ_mask & KADM5_KVNO)
182         ent->entry.kvno = princ->kvno;
183     if(mask & KADM5_MAX_RLIFE) {
184         if(princ_mask & KADM5_MAX_RLIFE) {
185           if(princ->max_renewable_life)
186             set_value(ent->entry.max_renew, princ->max_renewable_life);
187           else
188             set_null(ent->entry.max_renew);
189         } else if(def_mask & KADM5_MAX_RLIFE) {
190           if(def->max_renewable_life)
191             set_value(ent->entry.max_renew, def->max_renewable_life);
192           else
193             set_null(ent->entry.max_renew);
194         }
195     }
196     if(mask & KADM5_KEY_DATA
197        && princ_mask & KADM5_KEY_DATA) {
198         _kadm5_set_keys2(context, &ent->entry,
199                          princ->n_key_data, princ->key_data);
200     }
201     if(mask & KADM5_TL_DATA) {
202         krb5_tl_data *tl;
203
204         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next) {
205             kadm5_ret_t ret;
206             ret = perform_tl_data(context->context, context->db, ent, tl);
207             if (ret)
208                 return ret;
209         }
210     }
211     if(mask & KADM5_FAIL_AUTH_COUNT) {
212         /* XXX */
213     }
214     return 0;
215 }