2 Unix SMB/CIFS implementation.
3 simple kerberos5 routines for active directory
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Luke Howard 2002-2003
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 #ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE
27 #define KRB5_KEY_TYPE(k) ((k)->keytype)
28 #define KRB5_KEY_LENGTH(k) ((k)->keyvalue.length)
29 #define KRB5_KEY_DATA(k) ((k)->keyvalue.data)
31 #define KRB5_KEY_TYPE(k) ((k)->enctype)
32 #define KRB5_KEY_LENGTH(k) ((k)->length)
33 #define KRB5_KEY_DATA(k) ((k)->contents)
34 #endif /* HAVE_KRB5_KEYBLOCK_KEYVALUE */
36 #ifndef HAVE_KRB5_SET_REAL_TIME
38 * This function is not in the Heimdal mainline.
40 krb5_error_code krb5_set_real_time(krb5_context context, int32_t seconds, int32_t microseconds)
45 ret = krb5_us_timeofday(context, &sec, &usec);
49 context->kdc_sec_offset = seconds - sec;
50 context->kdc_usec_offset = microseconds - usec;
56 #if defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES) && !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
57 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
59 return krb5_set_default_in_tkt_etypes(ctx, enc);
63 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
65 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
67 pkaddr->addr_type = KRB5_ADDRESS_INET;
68 pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
69 pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
71 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
73 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
75 pkaddr->addrtype = ADDRTYPE_INET;
76 pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
77 pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in *)paddr)->sin_addr);
80 __ERROR__XX__UNKNOWN_ADDRTYPE
83 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY)
84 int create_kerberos_key_from_string(krb5_context context,
85 krb5_principal host_princ,
92 krb5_encrypt_block eblock;
94 ret = krb5_principal2salt(context, host_princ, &salt);
96 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret)));
99 krb5_use_enctype(context, &eblock, enctype);
100 ret = krb5_string_to_key(context, &eblock, key, password, &salt);
101 SAFE_FREE(salt.data);
104 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
105 int create_kerberos_key_from_string(krb5_context context,
106 krb5_principal host_princ,
109 krb5_enctype enctype)
114 ret = krb5_get_pw_salt(context, host_princ, &salt);
116 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
119 return krb5_string_to_key_salt(context, enctype, password->data,
123 __ERROR_XX_UNKNOWN_CREATE_KEY_FUNCTIONS
126 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
127 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
128 krb5_enctype **enctypes)
130 return krb5_get_permitted_enctypes(context, enctypes);
132 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
133 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
134 krb5_enctype **enctypes)
136 return krb5_get_default_in_tkt_etypes(context, enctypes);
139 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
142 void free_kerberos_etypes(krb5_context context,
143 krb5_enctype *enctypes)
145 #if defined(HAVE_KRB5_FREE_KTYPES)
146 krb5_free_ktypes(context, enctypes);
154 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
155 krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
156 krb5_auth_context auth_context,
157 krb5_keyblock *keyblock)
159 return krb5_auth_con_setkey(context, auth_context, keyblock);
163 void get_auth_data_from_tkt(DATA_BLOB *auth_data, krb5_ticket *tkt)
165 #if defined(HAVE_KRB5_TKT_ENC_PART2)
167 *auth_data = data_blob(tkt->enc_part2->authorization_data[0]->contents,
168 tkt->enc_part2->authorization_data[0]->length);
170 if (tkt->ticket.authorization_data && tkt->ticket.authorization_data->len)
171 *auth_data = data_blob(tkt->ticket.authorization_data->val->ad_data.data,
172 tkt->ticket.authorization_data->val->ad_data.length);
176 krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
178 #if defined(HAVE_KRB5_TKT_ENC_PART2)
179 return tkt->enc_part2->client;
185 #if !defined(HAVE_KRB5_LOCATE_KDC)
186 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
188 krb5_krbhst_handle hnd;
189 krb5_krbhst_info *hinfo;
197 rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
199 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
203 for ( num_kdcs = 0; (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); num_kdcs++)
206 krb5_krbhst_reset(ctx, hnd);
209 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
210 krb5_krbhst_free(ctx, hnd);
214 sa = malloc( sizeof(struct sockaddr) * num_kdcs );
216 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
217 krb5_krbhst_free(ctx, hnd);
222 memset(*addr_pp, '\0', sizeof(struct sockaddr) * num_kdcs );
224 for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
225 if (hinfo->ai->ai_family == AF_INET)
226 memcpy(&sa[i], hinfo->ai->ai_addr, sizeof(struct sockaddr));
229 krb5_krbhst_free(ctx, hnd);
238 we can't use krb5_mk_req because w2k wants the service to be in a particular format
240 static krb5_error_code ads_krb5_mk_req(krb5_context context,
241 krb5_auth_context *auth_context,
242 const krb5_flags ap_req_options,
243 const char *principal,
247 krb5_error_code retval;
248 krb5_principal server;
253 retval = krb5_parse_name(context, principal, &server);
255 DEBUG(1,("Failed to parse principal %s\n", principal));
259 /* obtain ticket & session key */
261 if ((retval = krb5_copy_principal(context, server, &creds.server))) {
262 DEBUG(1,("krb5_copy_principal failed (%s)\n",
263 error_message(retval)));
267 if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
268 DEBUG(1,("krb5_cc_get_principal failed (%s)\n",
269 error_message(retval)));
273 if ((retval = krb5_get_credentials(context, 0,
274 ccache, &creds, &credsp))) {
275 DEBUG(1,("krb5_get_credentials failed for %s (%s)\n",
276 principal, error_message(retval)));
280 /* cope with the ticket being in the future due to clock skew */
281 if ((unsigned)credsp->times.starttime > time(NULL)) {
282 time_t t = time(NULL);
283 int time_offset = (unsigned)credsp->times.starttime - t;
284 DEBUG(4,("Advancing clock by %d seconds to cope with clock skew\n", time_offset));
285 krb5_set_real_time(context, t + time_offset + 1, 0);
289 retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
290 &in_data, credsp, outbuf);
292 DEBUG(1,("krb5_mk_req_extended failed (%s)\n",
293 error_message(retval)));
296 krb5_free_creds(context, credsp);
299 krb5_free_cred_contents(context, &creds);
302 krb5_free_principal(context, server);
308 get a kerberos5 ticket for the given service
310 DATA_BLOB cli_krb5_get_ticket(const char *principal, time_t time_offset, unsigned char session_key_krb5[16])
312 krb5_error_code retval;
315 krb5_context context;
316 krb5_auth_context auth_context = NULL;
318 krb5_enctype enc_types[] = {
319 #ifdef ENCTYPE_ARCFOUR_HMAC
320 ENCTYPE_ARCFOUR_HMAC,
326 retval = krb5_init_context(&context);
328 DEBUG(1,("krb5_init_context failed (%s)\n",
329 error_message(retval)));
333 if (time_offset != 0) {
334 krb5_set_real_time(context, time(NULL) + time_offset, 0);
337 if ((retval = krb5_cc_default(context, &ccdef))) {
338 DEBUG(1,("krb5_cc_default failed (%s)\n",
339 error_message(retval)));
343 if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
344 DEBUG(1,("krb5_set_default_tgs_ktypes failed (%s)\n",
345 error_message(retval)));
349 if ((retval = ads_krb5_mk_req(context,
357 get_krb5_smb_session_key(context, auth_context, session_key_krb5, False);
359 ret = data_blob(packet.data, packet.length);
360 /* Hmm, heimdal dooesn't have this - what's the correct call? */
361 /* krb5_free_data_contents(context, &packet); */
362 krb5_free_context(context);
367 krb5_free_context(context);
369 return data_blob(NULL, 0);
372 BOOL get_krb5_smb_session_key(krb5_context context, krb5_auth_context auth_context, uint8 session_key[16], BOOL remote)
378 memset(session_key, 0, 16);
381 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
383 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
384 if (err == 0 && skey != NULL) {
385 DEBUG(10, ("Got KRB5 session key of length %d\n", KRB5_KEY_LENGTH(skey)));
386 if (KRB5_KEY_LENGTH(skey) == 16) {
387 memcpy(session_key, KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
388 dump_data_pw("KRB5 Session Key:\n", session_key, 16);
391 krb5_free_keyblock(context, skey);
393 DEBUG(10, ("KRB5 error getting session key %d\n", err));
400 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
401 const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
403 static krb5_data kdata;
405 kdata.data = krb5_principal_get_comp_string(context, principal, i);
406 kdata.length = strlen(kdata.data);
411 #else /* HAVE_KRB5 */
412 /* this saves a few linking headaches */
413 DATA_BLOB cli_krb5_get_ticket(const char *principal, time_t time_offset, unsigned char session_key_krb5[16])
415 DEBUG(0,("NO KERBEROS SUPPORT\n"));
416 return data_blob(NULL, 0);