get_s.c revision 178826 
1/*
2 * Copyright (c) 1997 - 2006 Kungliga Tekniska H�gskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "kadm5_locl.h"
35
36RCSID("$Id: get_s.c 21745 2007-07-31 16:11:25Z lha $");
37
38static kadm5_ret_t
39add_tl_data(kadm5_principal_ent_t ent, int16_t type,
40	    const void *data, size_t size)
41{
42    krb5_tl_data *tl;
43
44    tl = calloc(1, sizeof(*tl));
45    if (tl == NULL)
46	return _kadm5_error_code(ENOMEM);
47
48    tl->tl_data_type = type;
49    tl->tl_data_length = size;
50    tl->tl_data_contents = malloc(size);
51    if (tl->tl_data_contents == NULL) {
52	free(tl);
53	return _kadm5_error_code(ENOMEM);
54    }
55    memcpy(tl->tl_data_contents, data, size);
56
57    tl->tl_data_next = ent->tl_data;
58    ent->tl_data = tl;
59    ent->n_tl_data++;
60
61    return 0;
62}
63
64krb5_ssize_t KRB5_LIB_FUNCTION
65_krb5_put_int(void *buffer, unsigned long value, size_t size); /* XXX */
66
67kadm5_ret_t
68kadm5_s_get_principal(void *server_handle,
69		      krb5_principal princ,
70		      kadm5_principal_ent_t out,
71		      uint32_t mask)
72{
73    kadm5_server_context *context = server_handle;
74    kadm5_ret_t ret;
75    hdb_entry_ex ent;
76
77    memset(&ent, 0, sizeof(ent));
78    ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
79    if(ret)
80	return ret;
81    ret = context->db->hdb_fetch(context->context, context->db, princ,
82				 HDB_F_DECRYPT|HDB_F_GET_ANY, &ent);
83    context->db->hdb_close(context->context, context->db);
84    if(ret)
85	return _kadm5_error_code(ret);
86
87    memset(out, 0, sizeof(*out));
88    if(mask & KADM5_PRINCIPAL)
89	ret  = krb5_copy_principal(context->context, ent.entry.principal,
90				   &out->principal);
91    if(ret)
92	goto out;
93    if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
94	out->princ_expire_time = *ent.entry.valid_end;
95    if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
96	out->pw_expiration = *ent.entry.pw_end;
97    if(mask & KADM5_LAST_PWD_CHANGE)
98	hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
99    if(mask & KADM5_ATTRIBUTES){
100	out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
101	out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
102	out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
103	out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
104	out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
105	out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
106	out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
107	out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
108	out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
109	out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
110	out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
111	out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
112	out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
113    }
114    if(mask & KADM5_MAX_LIFE) {
115	if(ent.entry.max_life)
116	    out->max_life = *ent.entry.max_life;
117	else
118	    out->max_life = INT_MAX;
119    }
120    if(mask & KADM5_MOD_TIME) {
121	if(ent.entry.modified_by)
122	    out->mod_date = ent.entry.modified_by->time;
123	else
124	    out->mod_date = ent.entry.created_by.time;
125    }
126    if(mask & KADM5_MOD_NAME) {
127	if(ent.entry.modified_by) {
128	    if (ent.entry.modified_by->principal != NULL)
129		ret = krb5_copy_principal(context->context,
130					  ent.entry.modified_by->principal,
131					  &out->mod_name);
132	} else if(ent.entry.created_by.principal != NULL)
133	    ret = krb5_copy_principal(context->context,
134				      ent.entry.created_by.principal,
135				      &out->mod_name);
136	else
137	    out->mod_name = NULL;
138    }
139    if(ret)
140	goto out;
141
142    if(mask & KADM5_KVNO)
143	out->kvno = ent.entry.kvno;
144    if(mask & KADM5_MKVNO) {
145	int n;
146	out->mkvno = 0; /* XXX */
147	for(n = 0; n < ent.entry.keys.len; n++)
148	    if(ent.entry.keys.val[n].mkvno) {
149		out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
150		break;
151	    }
152    }
153    if(mask & KADM5_AUX_ATTRIBUTES)
154	/* XXX implement */;
155    if(mask & KADM5_POLICY)
156	out->policy = NULL;
157    if(mask & KADM5_MAX_RLIFE) {
158	if(ent.entry.max_renew)
159	    out->max_renewable_life = *ent.entry.max_renew;
160	else
161	    out->max_renewable_life = INT_MAX;
162    }
163    if(mask & KADM5_LAST_SUCCESS)
164	/* XXX implement */;
165    if(mask & KADM5_LAST_FAILED)
166	/* XXX implement */;
167    if(mask & KADM5_FAIL_AUTH_COUNT)
168	/* XXX implement */;
169    if(mask & KADM5_KEY_DATA){
170	int i;
171	Key *key;
172	krb5_key_data *kd;
173	krb5_salt salt;
174	krb5_data *sp;
175	krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
176	out->key_data = malloc(ent.entry.keys.len * sizeof(*out->key_data));
177	if (out->key_data == NULL) {
178	    ret = ENOMEM;
179	    goto out;
180	}
181	for(i = 0; i < ent.entry.keys.len; i++){
182	    key = &ent.entry.keys.val[i];
183	    kd = &out->key_data[i];
184	    kd->key_data_ver = 2;
185	    kd->key_data_kvno = ent.entry.kvno;
186	    kd->key_data_type[0] = key->key.keytype;
187	    if(key->salt)
188		kd->key_data_type[1] = key->salt->type;
189	    else
190		kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
191	    /* setup key */
192	    kd->key_data_length[0] = key->key.keyvalue.length;
193	    kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
194	    if(kd->key_data_contents[0] == NULL){
195		ret = ENOMEM;
196		break;
197	    }
198	    memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
199		   kd->key_data_length[0]);
200	    /* setup salt */
201	    if(key->salt)
202		sp = &key->salt->salt;
203	    else
204		sp = &salt.saltvalue;
205	    kd->key_data_length[1] = sp->length;
206	    kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
207	    if(kd->key_data_length[1] != 0
208	       && kd->key_data_contents[1] == NULL) {
209		memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
210		ret = ENOMEM;
211		break;
212	    }
213	    memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
214	    out->n_key_data = i + 1;
215	}
216	krb5_free_salt(context->context, salt);
217    }
218    if(ret){
219	kadm5_free_principal_ent(context, out);
220	goto out;
221    }
222    if(mask & KADM5_TL_DATA) {
223	time_t last_pw_expire;
224	const HDB_Ext_Aliases *aliases;
225
226	ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
227	if (ret == 0 && last_pw_expire) {
228	    unsigned char buf[4];
229	    _krb5_put_int(buf, last_pw_expire, sizeof(buf));
230	    ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
231	}
232	if(ret){
233	    kadm5_free_principal_ent(context, out);
234	    goto out;
235	}
236	/*
237	 * If the client was allowed to get key data, let it have the
238	 * password too.
239	 */
240	if(mask & KADM5_KEY_DATA) {
241	    heim_utf8_string pw;
242
243	    ret = hdb_entry_get_password(context->context,
244					 context->db, &ent.entry, &pw);
245	    if (ret == 0) {
246		ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
247		free(pw);
248	    }
249	    krb5_clear_error_string(context->context);
250	    ret = 0;
251	}
252
253	ret = hdb_entry_get_aliases(&ent.entry, &aliases);
254	if (ret == 0 && aliases) {
255	    krb5_data buf;
256	    size_t len;
257
258	    ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
259			       aliases, &len, ret);
260	    if (ret) {
261		kadm5_free_principal_ent(context, out);
262		goto out;
263	    }
264	    if (len != buf.length)
265		krb5_abortx(context->context,
266			    "internal ASN.1 encoder error");
267	    ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
268	    free(buf.data);
269	    if (ret) {
270		kadm5_free_principal_ent(context, out);
271		goto out;
272	    }
273	}
274	if(ret){
275	    kadm5_free_principal_ent(context, out);
276	    goto out;
277	}
278
279    }
280out:
281    hdb_free_entry(context->context, &ent);
282
283    return _kadm5_error_code(ret);
284}
285