2 Unix SMB/CIFS implementation.
3 simple kerberos5 routines for active directory
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Luke Howard 2002
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #ifndef HAVE_KRB5_SET_REAL_TIME
28 * This function is not in the Heimdal mainline.
30 krb5_error_code krb5_set_real_time(krb5_context context, int32_t seconds, int32_t microseconds)
35 ret = krb5_us_timeofday(context, &sec, &usec);
39 context->kdc_sec_offset = seconds - sec;
40 context->kdc_usec_offset = microseconds - usec;
46 #if defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES) && !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
47 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
49 return krb5_set_default_in_tkt_etypes(ctx, enc);
53 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
55 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
57 pkaddr->addr_type = KRB5_ADDRESS_INET;
58 pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
59 pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
61 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
63 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
65 pkaddr->addrtype = ADDRTYPE_INET;
66 pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
67 pkaddr->contents = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
70 __ERROR__XX__UNKNOWN_ADDRTYPE
73 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY)
74 int create_kerberos_key_from_string(krb5_context context,
75 krb5_principal host_princ,
82 krb5_encrypt_block eblock;
84 ret = krb5_principal2salt(context, host_princ, &salt);
86 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret)));
89 krb5_use_enctype(context, &eblock, enctype);
90 return krb5_string_to_key(context, &eblock, key, password, &salt);
92 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
93 int create_kerberos_key_from_string(krb5_context context,
94 krb5_principal host_princ,
102 ret = krb5_get_pw_salt(context, host_princ, &salt);
104 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
107 return krb5_string_to_key_salt(context, enctype, password->data,
111 __ERROR_XX_UNKNOWN_CREATE_KEY_FUNCTIONS
114 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
115 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
116 krb5_enctype **enctypes)
118 return krb5_get_permitted_enctypes(context, enctypes);
120 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
121 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
122 krb5_enctype **enctypes)
124 return krb5_get_default_in_tkt_etypes(context, enctypes);
127 __ERROR_XX_UNKNOWN_GET_ENCTYPES_FUNCTIONS
130 void free_kerberos_etypes(krb5_context context,
131 krb5_enctype *enctypes)
133 #if defined(HAVE_KRB5_FREE_KTYPES)
134 return krb5_free_ktypes(context, enctypes);
136 return SAFE_FREE(enctypes);
140 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
141 krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
142 krb5_auth_context auth_context,
143 krb5_keyblock *keyblock)
145 return krb5_auth_con_setkey(context, auth_context, keyblock);
149 void get_auth_data_from_tkt(DATA_BLOB *auth_data, krb5_ticket *tkt)
151 #if defined(HAVE_KRB5_TKT_ENC_PART2)
153 *auth_data = data_blob(tkt->enc_part2->authorization_data[0]->contents,
154 tkt->enc_part2->authorization_data[0]->length);
156 if (tkt->ticket.authorization_data && tkt->ticket.authorization_data->len)
157 *auth_data = data_blob(tkt->ticket.authorization_data->val->ad_data.data,
158 tkt->ticket.authorization_data->val->ad_data.length);
162 krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
164 #if defined(HAVE_KRB5_TKT_ENC_PART2)
165 return tkt->enc_part2->client;
171 #if !defined(HAVE_KRB5_LOCATE_KDC)
172 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
174 krb5_krbhst_handle hnd;
175 krb5_krbhst_info *hinfo;
183 rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
185 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
189 for ( num_kdcs = 0; (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); num_kdcs++)
192 krb5_krbhst_reset(ctx, hnd);
195 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
196 krb5_krbhst_free(ctx, hnd);
200 sa = malloc( sizeof(struct sockaddr) * num_kdcs );
202 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
203 krb5_krbhst_free(ctx, hnd);
208 memset(*addr_pp, '\0', sizeof(struct sockaddr) * num_kdcs );
210 for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
211 if (hinfo->ai->ai_family == AF_INET)
212 memcpy(&sa[i], hinfo->ai->ai_addr, sizeof(struct sockaddr));
215 krb5_krbhst_free(ctx, hnd);
224 we can't use krb5_mk_req because w2k wants the service to be in a particular format
226 static krb5_error_code krb5_mk_req2(krb5_context context,
227 krb5_auth_context *auth_context,
228 const krb5_flags ap_req_options,
229 const char *principal,
233 krb5_error_code retval;
234 krb5_principal server;
239 retval = krb5_parse_name(context, principal, &server);
241 DEBUG(1,("Failed to parse principal %s\n", principal));
245 /* obtain ticket & session key */
246 memset((char *)&creds, 0, sizeof(creds));
247 if ((retval = krb5_copy_principal(context, server, &creds.server))) {
248 DEBUG(1,("krb5_copy_principal failed (%s)\n",
249 error_message(retval)));
253 if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
254 DEBUG(1,("krb5_cc_get_principal failed (%s)\n",
255 error_message(retval)));
259 if ((retval = krb5_get_credentials(context, 0,
260 ccache, &creds, &credsp))) {
261 DEBUG(1,("krb5_get_credentials failed for %s (%s)\n",
262 principal, error_message(retval)));
266 /* cope with the ticket being in the future due to clock skew */
267 if ((unsigned)credsp->times.starttime > time(NULL)) {
268 time_t t = time(NULL);
269 int time_offset = (unsigned)credsp->times.starttime - t;
270 DEBUG(4,("Advancing clock by %d seconds to cope with clock skew\n", time_offset));
271 krb5_set_real_time(context, t + time_offset + 1, 0);
275 retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
276 &in_data, credsp, outbuf);
278 DEBUG(1,("krb5_mk_req_extended failed (%s)\n",
279 error_message(retval)));
282 krb5_free_creds(context, credsp);
285 krb5_free_cred_contents(context, &creds);
288 krb5_free_principal(context, server);
294 get a kerberos5 ticket for the given service
296 DATA_BLOB krb5_get_ticket(const char *principal, time_t time_offset)
298 krb5_error_code retval;
301 krb5_context context;
302 krb5_auth_context auth_context = NULL;
304 krb5_enctype enc_types[] = {
305 #ifdef ENCTYPE_ARCFOUR_HMAC
306 ENCTYPE_ARCFOUR_HMAC,
312 retval = krb5_init_context(&context);
314 DEBUG(1,("krb5_init_context failed (%s)\n",
315 error_message(retval)));
319 if (time_offset != 0) {
320 krb5_set_real_time(context, time(NULL) + time_offset, 0);
323 if ((retval = krb5_cc_default(context, &ccdef))) {
324 DEBUG(1,("krb5_cc_default failed (%s)\n",
325 error_message(retval)));
329 if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
330 DEBUG(1,("krb5_set_default_tgs_ktypes failed (%s)\n",
331 error_message(retval)));
335 if ((retval = krb5_mk_req2(context,
343 ret = data_blob(packet.data, packet.length);
344 /* Hmm, heimdal dooesn't have this - what's the correct call? */
345 /* krb5_free_data_contents(context, &packet); */
346 krb5_free_context(context);
351 krb5_free_context(context);
353 return data_blob(NULL, 0);
356 #else /* HAVE_KRB5 */
357 /* this saves a few linking headaches */
358 DATA_BLOB krb5_get_ticket(const char *principal, time_t time_offset)
360 DEBUG(0,("NO KERBEROS SUPPORT\n"));
361 return data_blob(NULL, 0);