2 * Copyright (c) 1997 - 2008 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 "krb5_locl.h"
36 #ifndef HEIMDAL_SMALLER
38 static krb5_error_code
39 make_pa_enc_timestamp(krb5_context context, PA_DATA *pa,
40 krb5_enctype etype, krb5_keyblock *key)
46 EncryptedData encdata;
52 krb5_us_timeofday (context, &p.patimestamp, &usec);
56 ASN1_MALLOC_ENCODE(PA_ENC_TS_ENC, buf, buf_size, &p, &len, ret);
60 krb5_abortx(context, "internal error in ASN.1 encoder");
61 ret = krb5_crypto_init(context, key, 0, &crypto);
66 ret = krb5_encrypt_EncryptedData(context,
68 KRB5_KU_PA_ENC_TIMESTAMP,
74 krb5_crypto_destroy(context, crypto);
78 ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_size, &encdata, &len, ret);
79 free_EncryptedData(&encdata);
83 krb5_abortx(context, "internal error in ASN.1 encoder");
84 pa->padata_type = KRB5_PADATA_ENC_TIMESTAMP;
85 pa->padata_value.length = len;
86 pa->padata_value.data = buf;
90 static krb5_error_code
91 add_padata(krb5_context context,
93 krb5_principal client,
94 krb5_key_proc key_proc,
95 krb5_const_pointer keyseed,
96 krb5_enctype *enctypes,
107 /* default to standard salt */
108 ret = krb5_get_pw_salt (context, client, &salt2);
114 enctypes = context->etypes;
116 for (ep = enctypes; *ep != ETYPE_NULL; ep++)
119 pa2 = realloc (md->val, (md->len + netypes) * sizeof(*md->val));
121 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
126 for (i = 0; i < netypes; ++i) {
129 ret = (*key_proc)(context, enctypes[i], *salt, keyseed, &key);
132 ret = make_pa_enc_timestamp (context, &md->val[md->len],
134 krb5_free_keyblock (context, key);
140 krb5_free_salt(context, salt2);
144 static krb5_error_code
145 init_as_req (krb5_context context,
148 const krb5_addresses *addrs,
149 const krb5_enctype *etypes,
150 const krb5_preauthtype *ptypes,
151 const krb5_preauthdata *preauth,
152 krb5_key_proc key_proc,
153 krb5_const_pointer keyseed,
160 memset(a, 0, sizeof(*a));
163 a->msg_type = krb_as_req;
164 a->req_body.kdc_options = opts;
165 a->req_body.cname = malloc(sizeof(*a->req_body.cname));
166 if (a->req_body.cname == NULL) {
168 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
171 a->req_body.sname = malloc(sizeof(*a->req_body.sname));
172 if (a->req_body.sname == NULL) {
174 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
177 ret = _krb5_principal2principalname (a->req_body.cname, creds->client);
180 ret = _krb5_principal2principalname (a->req_body.sname, creds->server);
183 ret = copy_Realm(&creds->client->realm, &a->req_body.realm);
187 if(creds->times.starttime) {
188 a->req_body.from = malloc(sizeof(*a->req_body.from));
189 if (a->req_body.from == NULL) {
191 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
194 *a->req_body.from = creds->times.starttime;
196 if(creds->times.endtime){
197 ALLOC(a->req_body.till, 1);
198 *a->req_body.till = creds->times.endtime;
200 if(creds->times.renew_till){
201 a->req_body.rtime = malloc(sizeof(*a->req_body.rtime));
202 if (a->req_body.rtime == NULL) {
204 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
207 *a->req_body.rtime = creds->times.renew_till;
209 a->req_body.nonce = nonce;
210 ret = _krb5_init_etype(context,
212 &a->req_body.etype.len,
213 &a->req_body.etype.val,
219 * This means no addresses
222 if (addrs && addrs->len == 0) {
223 a->req_body.addresses = NULL;
225 a->req_body.addresses = malloc(sizeof(*a->req_body.addresses));
226 if (a->req_body.addresses == NULL) {
228 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
233 ret = krb5_copy_addresses(context, addrs, a->req_body.addresses);
235 ret = krb5_get_all_client_addrs (context, a->req_body.addresses);
236 if(ret == 0 && a->req_body.addresses->len == 0) {
237 free(a->req_body.addresses);
238 a->req_body.addresses = NULL;
245 a->req_body.enc_authorization_data = NULL;
246 a->req_body.additional_tickets = NULL;
248 if(preauth != NULL) {
251 if(a->padata == NULL) {
253 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
256 a->padata->val = NULL;
258 for(i = 0; i < preauth->len; i++) {
259 if(preauth->val[i].type == KRB5_PADATA_ENC_TIMESTAMP){
262 for(j = 0; j < preauth->val[i].info.len; j++) {
263 krb5_salt *sp = &salt;
264 if(preauth->val[i].info.val[j].salttype)
265 salt.salttype = *preauth->val[i].info.val[j].salttype;
267 salt.salttype = KRB5_PW_SALT;
268 if(preauth->val[i].info.val[j].salt)
269 salt.saltvalue = *preauth->val[i].info.val[j].salt;
271 if(salt.salttype == KRB5_PW_SALT)
274 krb5_data_zero(&salt.saltvalue);
275 ret = add_padata(context, a->padata, creds->client,
277 &preauth->val[i].info.val[j].etype, 1,
285 /* not sure this is the way to use `ptypes' */
286 if (ptypes == NULL || *ptypes == KRB5_PADATA_NONE)
288 else if (*ptypes == KRB5_PADATA_ENC_TIMESTAMP) {
290 if (a->padata == NULL) {
292 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
296 a->padata->val = NULL;
298 /* make a v5 salted pa-data */
299 add_padata(context, a->padata, creds->client,
300 key_proc, keyseed, a->req_body.etype.val,
301 a->req_body.etype.len, NULL);
303 /* make a v4 salted pa-data */
304 salt.salttype = KRB5_PW_SALT;
305 krb5_data_zero(&salt.saltvalue);
306 add_padata(context, a->padata, creds->client,
307 key_proc, keyseed, a->req_body.etype.val,
308 a->req_body.etype.len, &salt);
310 ret = KRB5_PREAUTH_BAD_TYPE;
311 krb5_set_error_message (context, ret,
312 N_("pre-auth type %d not supported", ""),
323 set_ptypes(krb5_context context,
325 const krb5_preauthtype **ptypes,
326 krb5_preauthdata **preauth)
328 static krb5_preauthdata preauth2;
329 static krb5_preauthtype ptypes2[] = { KRB5_PADATA_ENC_TIMESTAMP, KRB5_PADATA_NONE };
334 decode_METHOD_DATA(error->e_data->data,
335 error->e_data->length,
338 for(i = 0; i < md.len; i++){
339 switch(md.val[i].padata_type){
340 case KRB5_PADATA_ENC_TIMESTAMP:
343 case KRB5_PADATA_ETYPE_INFO:
344 *preauth = &preauth2;
345 ALLOC_SEQ(*preauth, 1);
346 (*preauth)->val[0].type = KRB5_PADATA_ENC_TIMESTAMP;
347 decode_ETYPE_INFO(md.val[i].padata_value.data,
348 md.val[i].padata_value.length,
349 &(*preauth)->val[0].info,
356 free_METHOD_DATA(&md);
363 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
364 krb5_get_in_cred(krb5_context context,
366 const krb5_addresses *addrs,
367 const krb5_enctype *etypes,
368 const krb5_preauthtype *ptypes,
369 const krb5_preauthdata *preauth,
370 krb5_key_proc key_proc,
371 krb5_const_pointer keyseed,
372 krb5_decrypt_proc decrypt_proc,
373 krb5_const_pointer decryptarg,
375 krb5_kdc_rep *ret_as_reply)
376 KRB5_DEPRECATED_FUNCTION("Use X instead")
389 krb5_preauthdata *my_preauth = NULL;
393 opts = int2KDCOptions(options);
395 krb5_generate_random_block (&nonce, sizeof(nonce));
400 ret = init_as_req (context,
412 free_ETYPE_INFO(&my_preauth->val[0].info);
413 free (my_preauth->val);
419 ASN1_MALLOC_ENCODE(AS_REQ, req.data, req.length, &a, &len, ret);
423 if(len != req.length)
424 krb5_abortx(context, "internal error in ASN.1 encoder");
426 ret = krb5_sendto_kdc (context, &req, &creds->client->realm, &resp);
427 krb5_data_free(&req);
431 memset (&rep, 0, sizeof(rep));
432 ret = decode_AS_REP(resp.data, resp.length, &rep.kdc_rep, &size);
434 /* let's try to parse it as a KRB-ERROR */
438 ret2 = krb5_rd_error(context, &resp, &error);
439 if(ret2 && resp.data && ((char*)resp.data)[0] == 4)
440 ret = KRB5KRB_AP_ERR_V4_REPLY;
441 krb5_data_free(&resp);
443 ret = krb5_error_from_rd_error(context, &error, creds);
444 /* if no preauth was set and KDC requires it, give it
446 if (!ptypes && !preauth
447 && ret == KRB5KDC_ERR_PREAUTH_REQUIRED
449 || ret == KRB5KDC_ERR_BADOPTION
451 && set_ptypes(context, &error, &ptypes, &my_preauth)) {
453 preauth = my_preauth;
454 krb5_free_error_contents(context, &error);
455 krb5_clear_error_message(context);
459 ret_as_reply->error = error;
461 free_KRB_ERROR (&error);
466 krb5_data_free(&resp);
470 etype = rep.kdc_rep.enc_part.etype;
471 if(rep.kdc_rep.padata){
473 pa = krb5_find_padata(rep.kdc_rep.padata->val, rep.kdc_rep.padata->len,
474 KRB5_PADATA_PW_SALT, &i);
477 pa = krb5_find_padata(rep.kdc_rep.padata->val,
478 rep.kdc_rep.padata->len,
479 KRB5_PADATA_AFS3_SALT, &i);
483 salt.salttype = (krb5_salttype)pa->padata_type;
484 salt.saltvalue = pa->padata_value;
486 ret = (*key_proc)(context, etype, salt, keyseed, &key);
488 /* make a v5 salted pa-data */
489 ret = krb5_get_pw_salt (context, creds->client, &salt);
493 ret = (*key_proc)(context, etype, salt, keyseed, &key);
494 krb5_free_salt(context, salt);
500 unsigned flags = EXTRACT_TICKET_TIMESYNC;
501 if (opts.request_anonymous)
502 flags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH;
504 ret = _krb5_extract_ticket(context,
509 KRB5_KU_AS_REP_ENC_PART,
516 memset (key->keyvalue.data, 0, key->keyvalue.length);
517 krb5_free_keyblock_contents (context, key);
521 if (ret == 0 && ret_as_reply)
524 krb5_free_kdc_rep (context, &rep);
528 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
529 krb5_get_in_tkt(krb5_context context,
531 const krb5_addresses *addrs,
532 const krb5_enctype *etypes,
533 const krb5_preauthtype *ptypes,
534 krb5_key_proc key_proc,
535 krb5_const_pointer keyseed,
536 krb5_decrypt_proc decrypt_proc,
537 krb5_const_pointer decryptarg,
540 krb5_kdc_rep *ret_as_reply)
541 KRB5_DEPRECATED_FUNCTION("Use X instead")
545 ret = krb5_get_in_cred (context,
560 ret = krb5_cc_store_cred (context, ccache, creds);
564 #endif /* HEIMDAL_SMALLER */