2 * Copyright (c) 1995-2003 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
34 #include "kafs_locl.h"
36 RCSID("$Id: afskrb5.c 17032 2006-04-10 08:45:04Z lha $");
38 struct krb5_kafs_data {
41 krb5_const_realm realm;
45 KAFS_RXKAD_2B_KVNO = 213,
46 KAFS_RXKAD_K5_KVNO = 256
50 v5_to_kt(krb5_creds *cred, uid_t uid, struct kafs_token *kt, int local524)
56 /* check if des key */
57 if (cred->session.keyvalue.length != 8)
66 kvno = KAFS_RXKAD_2B_KVNO;
68 ret = decode_Ticket(cred->ticket.data, cred->ticket.length, &t, &len);
74 ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_len, &t.enc_part,
81 return KRB5KRB_ERR_GENERIC;
85 kt->ticket_len = buf_len;
88 kvno = KAFS_RXKAD_K5_KVNO;
89 kt->ticket = malloc(cred->ticket.length);
90 if (kt->ticket == NULL)
92 kt->ticket_len = cred->ticket.length;
93 memcpy(kt->ticket, cred->ticket.data, kt->ticket_len);
100 * Build a struct ClearToken
103 kt->ct.AuthHandle = kvno;
104 memcpy(kt->ct.HandShakeKey, cred->session.keyvalue.data, 8);
106 kt->ct.BeginTimestamp = cred->times.starttime;
107 kt->ct.EndTimestamp = cred->times.endtime;
109 _kafs_fixup_viceid(&kt->ct, uid);
114 static krb5_error_code
115 v5_convert(krb5_context context, krb5_ccache id,
116 krb5_creds *cred, uid_t uid,
118 struct kafs_token *kt)
127 krb5_appdefault_string (context, "libkafs",
129 "afs-use-524", "2b", &val);
132 if (strcasecmp(val, "local") == 0 ||
133 strcasecmp(val, "2b") == 0)
134 ret = v5_to_kt(cred, uid, kt, 1);
135 else if(strcasecmp(val, "yes") == 0 ||
136 strcasecmp(val, "true") == 0 ||
138 struct credentials cred4;
141 ret = krb524_convert_creds_kdc(context, cred, &cred4);
143 ret = krb524_convert_creds_kdc_ccache(context, id, cred, &cred4);
147 ret = _kafs_v4_to_kt(&cred4, uid, kt);
149 ret = v5_to_kt(cred, uid, kt, 0);
162 get_cred(struct kafs_data *data, const char *name, const char *inst,
163 const char *realm, uid_t uid, struct kafs_token *kt)
166 krb5_creds in_creds, *out_creds;
167 struct krb5_kafs_data *d = data->data;
169 memset(&in_creds, 0, sizeof(in_creds));
170 ret = krb5_425_conv_principal(d->context, name, inst, realm,
174 ret = krb5_cc_get_principal(d->context, d->id, &in_creds.client);
176 krb5_free_principal(d->context, in_creds.server);
179 in_creds.session.keytype = ETYPE_DES_CBC_CRC;
180 ret = krb5_get_credentials(d->context, 0, d->id, &in_creds, &out_creds);
181 krb5_free_principal(d->context, in_creds.server);
182 krb5_free_principal(d->context, in_creds.client);
186 ret = v5_convert(d->context, d->id, out_creds, uid,
187 (inst != NULL && inst[0] != '\0') ? inst : realm, kt);
188 krb5_free_creds(d->context, out_creds);
193 static krb5_error_code
194 afslog_uid_int(struct kafs_data *data, const char *cell, const char *rh,
195 uid_t uid, const char *homedir)
198 struct kafs_token kt;
199 krb5_principal princ;
200 const char *trealm; /* ticket realm */
201 struct krb5_kafs_data *d = data->data;
203 if (cell == 0 || cell[0] == 0)
204 return _kafs_afslog_all_local_cells (data, uid, homedir);
206 ret = krb5_cc_get_principal (d->context, d->id, &princ);
210 trealm = krb5_principal_get_realm (d->context, princ);
213 ret = _kafs_get_cred(data, cell, d->realm, trealm, uid, &kt);
214 krb5_free_principal (d->context, princ);
217 ret = kafs_settoken_rxkad(cell, &kt.ct, kt.ticket, kt.ticket_len);
224 get_realm(struct kafs_data *data, const char *host)
226 struct krb5_kafs_data *d = data->data;
229 if(krb5_get_host_realm(d->context, host, &realms))
231 r = strdup(realms[0]);
232 krb5_free_host_realm(d->context, realms);
237 krb5_afslog_uid_home(krb5_context context,
240 krb5_const_realm realm,
245 struct krb5_kafs_data d;
249 kd.afslog_uid = afslog_uid_int;
250 kd.get_cred = get_cred;
251 kd.get_realm = get_realm;
253 if (context == NULL) {
254 ret = krb5_init_context(&d.context);
260 ret = krb5_cc_default(d.context, &d.id);
266 ret = afslog_uid_int(&kd, cell, 0, uid, homedir);
268 krb5_cc_close(context, d.id);
271 krb5_free_context(d.context);
276 krb5_afslog_uid(krb5_context context,
279 krb5_const_realm realm,
282 return krb5_afslog_uid_home (context, id, cell, realm, uid, NULL);
286 krb5_afslog(krb5_context context,
289 krb5_const_realm realm)
291 return krb5_afslog_uid (context, id, cell, realm, getuid());
295 krb5_afslog_home(krb5_context context,
298 krb5_const_realm realm,
301 return krb5_afslog_uid_home (context, id, cell, realm, getuid(), homedir);
309 krb5_realm_of_cell(const char *cell, char **realm)
314 kd.get_realm = get_realm;
315 return _kafs_realm_of_cell(&kd, cell, realm);
323 kafs_settoken5(krb5_context context, const char *cell, uid_t uid,
326 struct kafs_token kt;
329 ret = v5_convert(context, NULL, cred, uid, cell, &kt);
333 ret = kafs_settoken_rxkad(cell, &kt.ct, kt.ticket, kt.ticket_len);