2 * Copyright (c) 1997 - 2002 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 "kadmin_locl.h"
35 #include <krb5-private.h>
37 RCSID("$Id: server.c,v 1.36.2.1 2002/10/21 14:53:39 joda Exp $");
40 kadmind_dispatch(void *kadm_handle, krb5_boolean initial,
41 krb5_data *in, krb5_data *out)
44 int32_t cmd, mask, tmp;
45 kadm5_server_context *context = kadm_handle;
46 char client[128], name[128], name2[128];
48 krb5_principal princ, princ2;
49 kadm5_principal_ent_rec ent;
51 krb5_keyblock *new_keys;
57 krb5_unparse_name_fixed(context->context, context->caller,
58 client, sizeof(client));
60 sp = krb5_storage_from_data(in);
62 krb5_ret_int32(sp, &cmd);
66 ret = krb5_ret_principal(sp, &princ);
69 ret = krb5_ret_int32(sp, &mask);
71 krb5_free_principal(context->context, princ);
74 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
75 krb5_warnx(context->context, "%s: %s %s", client, op, name);
76 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_GET, princ);
78 krb5_free_principal(context->context, princ);
81 ret = kadm5_get_principal(kadm_handle, princ, &ent, mask);
82 krb5_storage_free(sp);
83 sp = krb5_storage_emem();
84 krb5_store_int32(sp, ret);
86 kadm5_store_principal_ent(sp, &ent);
87 kadm5_free_principal_ent(kadm_handle, &ent);
89 krb5_free_principal(context->context, princ);
94 ret = krb5_ret_principal(sp, &princ);
97 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
98 krb5_warnx(context->context, "%s: %s %s", client, op, name);
99 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_DELETE, princ);
101 krb5_free_principal(context->context, princ);
104 ret = kadm5_delete_principal(kadm_handle, princ);
105 krb5_free_principal(context->context, princ);
106 krb5_storage_free(sp);
107 sp = krb5_storage_emem();
108 krb5_store_int32(sp, ret);
113 ret = kadm5_ret_principal_ent(sp, &ent);
116 ret = krb5_ret_int32(sp, &mask);
118 kadm5_free_principal_ent(context->context, &ent);
121 ret = krb5_ret_string(sp, &password);
123 kadm5_free_principal_ent(context->context, &ent);
126 krb5_unparse_name_fixed(context->context, ent.principal,
128 krb5_warnx(context->context, "%s: %s %s", client, op, name);
129 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_ADD,
132 kadm5_free_principal_ent(context->context, &ent);
133 memset(password, 0, strlen(password));
137 ret = kadm5_create_principal(kadm_handle, &ent,
139 kadm5_free_principal_ent(kadm_handle, &ent);
140 memset(password, 0, strlen(password));
142 krb5_storage_free(sp);
143 sp = krb5_storage_emem();
144 krb5_store_int32(sp, ret);
149 ret = kadm5_ret_principal_ent(sp, &ent);
152 ret = krb5_ret_int32(sp, &mask);
154 kadm5_free_principal_ent(context, &ent);
157 krb5_unparse_name_fixed(context->context, ent.principal,
159 krb5_warnx(context->context, "%s: %s %s", client, op, name);
160 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_MODIFY,
163 kadm5_free_principal_ent(context, &ent);
166 ret = kadm5_modify_principal(kadm_handle, &ent, mask);
167 kadm5_free_principal_ent(kadm_handle, &ent);
168 krb5_storage_free(sp);
169 sp = krb5_storage_emem();
170 krb5_store_int32(sp, ret);
175 ret = krb5_ret_principal(sp, &princ);
178 ret = krb5_ret_principal(sp, &princ2);
180 krb5_free_principal(context->context, princ);
183 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
184 krb5_unparse_name_fixed(context->context, princ2, name2, sizeof(name2));
185 krb5_warnx(context->context, "%s: %s %s -> %s",
186 client, op, name, name2);
187 ret = _kadm5_acl_check_permission(context,
190 || _kadm5_acl_check_permission(context,
194 krb5_free_principal(context->context, princ);
197 ret = kadm5_rename_principal(kadm_handle, princ, princ2);
198 krb5_free_principal(context->context, princ);
199 krb5_free_principal(context->context, princ2);
200 krb5_storage_free(sp);
201 sp = krb5_storage_emem();
202 krb5_store_int32(sp, ret);
207 ret = krb5_ret_principal(sp, &princ);
210 ret = krb5_ret_string(sp, &password);
212 krb5_free_principal(context->context, princ);
215 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
216 krb5_warnx(context->context, "%s: %s %s", client, op, name);
219 * The change is allowed if at least one of:
220 * a) it's for the principal him/herself and this was an initial ticket
221 * b) the user is on the CPW ACL.
225 && krb5_principal_compare (context->context, context->caller,
229 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_CPW, princ);
232 krb5_free_principal(context->context, princ);
235 ret = kadm5_chpass_principal(kadm_handle, princ, password);
236 krb5_free_principal(context->context, princ);
237 memset(password, 0, strlen(password));
239 krb5_storage_free(sp);
240 sp = krb5_storage_emem();
241 krb5_store_int32(sp, ret);
244 case kadm_chpass_with_key:{
246 krb5_key_data *key_data;
249 op = "CHPASS_WITH_KEY";
250 ret = krb5_ret_principal(sp, &princ);
253 ret = krb5_ret_int32(sp, &n_key_data);
255 krb5_free_principal(context->context, princ);
258 /* n_key_data will be squeezed into an int16_t below. */
259 if (n_key_data < 0 || n_key_data >= 1 << 16 ||
260 n_key_data > UINT_MAX/sizeof(*key_data)) {
262 krb5_free_principal(context->context, princ);
266 key_data = malloc (n_key_data * sizeof(*key_data));
267 if (key_data == NULL) {
269 krb5_free_principal(context->context, princ);
273 for (i = 0; i < n_key_data; ++i) {
274 ret = kadm5_ret_key_data (sp, &key_data[i]);
278 kadm5_free_key_data (context, &dummy, key_data);
280 krb5_free_principal(context->context, princ);
285 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
286 krb5_warnx(context->context, "%s: %s %s", client, op, name);
289 * The change is allowed if at least one of:
290 * a) it's for the principal him/herself and this was an initial ticket
291 * b) the user is on the CPW ACL.
295 && krb5_principal_compare (context->context, context->caller,
299 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_CPW, princ);
302 int16_t dummy = n_key_data;
304 kadm5_free_key_data (context, &dummy, key_data);
306 krb5_free_principal(context->context, princ);
309 ret = kadm5_chpass_principal_with_key(kadm_handle, princ,
310 n_key_data, key_data);
312 int16_t dummy = n_key_data;
313 kadm5_free_key_data (context, &dummy, key_data);
316 krb5_free_principal(context->context, princ);
317 krb5_storage_free(sp);
318 sp = krb5_storage_emem();
319 krb5_store_int32(sp, ret);
324 ret = krb5_ret_principal(sp, &princ);
327 krb5_unparse_name_fixed(context->context, princ, name, sizeof(name));
328 krb5_warnx(context->context, "%s: %s %s", client, op, name);
330 * The change is allowed if at least one of:
331 * a) it's for the principal him/herself and this was an initial ticket
332 * b) the user is on the CPW ACL.
336 && krb5_principal_compare (context->context, context->caller,
340 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_CPW, princ);
343 krb5_free_principal(context->context, princ);
346 ret = kadm5_randkey_principal(kadm_handle, princ,
348 krb5_free_principal(context->context, princ);
349 krb5_storage_free(sp);
350 sp = krb5_storage_emem();
351 krb5_store_int32(sp, ret);
354 krb5_store_int32(sp, n_keys);
355 for(i = 0; i < n_keys; i++){
356 krb5_store_keyblock(sp, new_keys[i]);
357 krb5_free_keyblock_contents(context->context, &new_keys[i]);
362 case kadm_get_privs:{
363 ret = kadm5_get_privs(kadm_handle, &mask);
364 krb5_storage_free(sp);
365 sp = krb5_storage_emem();
366 krb5_store_int32(sp, ret);
368 krb5_store_int32(sp, mask);
371 case kadm_get_princs:{
373 ret = krb5_ret_int32(sp, &tmp);
377 ret = krb5_ret_string(sp, &exp);
382 krb5_warnx(context->context, "%s: %s %s", client, op, exp ? exp : "*");
383 ret = _kadm5_acl_check_permission(context, KADM5_PRIV_LIST, NULL);
388 ret = kadm5_get_principals(kadm_handle, exp, &princs, &n_princs);
390 krb5_storage_free(sp);
391 sp = krb5_storage_emem();
392 krb5_store_int32(sp, ret);
395 krb5_store_int32(sp, n_princs);
396 for(i = 0; i < n_princs; i++)
397 krb5_store_string(sp, princs[i]);
398 kadm5_free_name_list(kadm_handle, princs, &n_princs);
403 krb5_warnx(context->context, "%s: UNKNOWN OP %d", client, cmd);
404 krb5_storage_free(sp);
405 sp = krb5_storage_emem();
406 krb5_store_int32(sp, KADM5_FAILURE);
409 krb5_storage_to_data(sp, out);
410 krb5_storage_free(sp);
413 krb5_warn(context->context, ret, "%s", op);
414 krb5_storage_seek(sp, 0, SEEK_SET);
415 krb5_store_int32(sp, ret);
416 krb5_storage_to_data(sp, out);
417 krb5_storage_free(sp);
422 v5_loop (krb5_context context,
423 krb5_auth_context ac,
424 krb5_boolean initial,
432 doing_useful_work = 0;
435 ret = krb5_read_priv_message(context, ac, &fd, &in);
436 if(ret == HEIM_ERR_EOF)
439 krb5_err(context, 1, ret, "krb5_read_priv_message");
440 doing_useful_work = 1;
441 kadmind_dispatch(kadm_handle, initial, &in, &out);
443 ret = krb5_write_priv_message(context, ac, &fd, &out);
445 krb5_err(context, 1, ret, "krb5_write_priv_message");
450 match_appl_version(const void *data, const char *appl_version)
453 if(sscanf(appl_version, "KADM0.%u", &minor) != 1)
455 *(unsigned*)data = minor;
460 handle_v5(krb5_context context,
461 krb5_auth_context ac,
467 u_char version[sizeof(KRB5_SENDAUTH_VERSION)];
473 krb5_boolean initial;
475 unsigned kadm_version;
476 kadm5_config_params realm_params;
478 if (len != sizeof(KRB5_SENDAUTH_VERSION))
479 krb5_errx(context, 1, "bad sendauth len %d", len);
480 n = krb5_net_read(context, &fd, version, len);
482 krb5_err (context, 1, errno, "reading sendauth version");
484 krb5_errx (context, 1, "EOF reading sendauth version");
485 if(memcmp(version, KRB5_SENDAUTH_VERSION, len) != 0)
486 krb5_errx(context, 1, "bad sendauth version %.8s", version);
488 ret = krb5_recvauth_match_version(context, &ac, &fd,
489 match_appl_version, &kadm_version,
490 NULL, KRB5_RECVAUTH_IGNORE_VERSION,
492 if(ret == KRB5_KT_NOTFOUND)
493 krb5_errx(context, 1, "krb5_recvauth: key not found");
495 krb5_err(context, 1, ret, "krb5_recvauth");
497 ret = krb5_unparse_name (context, ticket->server, &server_name);
499 krb5_err (context, 1, ret, "krb5_unparse_name");
501 if (strncmp (server_name, KADM5_ADMIN_SERVICE,
502 strlen(KADM5_ADMIN_SERVICE)) != 0)
503 krb5_errx (context, 1, "ticket for strange principal (%s)",
508 memset(&realm_params, 0, sizeof(realm_params));
510 if(kadm_version == 1) {
512 ret = krb5_read_priv_message(context, ac, &fd, ¶ms);
514 krb5_err(context, 1, ret, "krb5_read_priv_message");
515 _kadm5_unmarshal_params(context, ¶ms, &realm_params);
518 initial = ticket->ticket.flags.initial;
519 ret = krb5_unparse_name(context, ticket->client, &client);
521 krb5_err (context, 1, ret, "krb5_unparse_name");
522 krb5_free_ticket (context, ticket);
523 ret = kadm5_init_with_password_ctx(context,
531 krb5_err (context, 1, ret, "kadm5_init_with_password_ctx");
532 v5_loop (context, ac, initial, kadm_handle, fd);
535 extern int do_kerberos4;
538 kadmind_loop(krb5_context context,
539 krb5_auth_context ac,
543 unsigned char tmp[4];
547 n = krb5_net_read(context, &fd, tmp, 4);
551 krb5_err(context, 1, errno, "read");
552 _krb5_get_int(tmp, &len, 4);
553 if(len > 0xffff && (len & 0xffff) == ('K' << 8) + 'A') {
557 handle_v4(context, keytab, len, fd);
559 krb5_errx(context, 1, "version 4 kadmin is disabled");
561 krb5_errx(context, 1, "packet appears to be version 4");
564 handle_v5(context, ac, keytab, len, fd);