2 * Copyright (c) 1997 - 2005 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>
38 kadmind_dispatch(void *kadm_handlep, krb5_boolean initial,
39 krb5_data *in, krb5_data *out)
42 int32_t cmd, mask, tmp;
43 kadm5_server_context *contextp = kadm_handlep;
44 char client[128], name[128], name2[128];
46 krb5_principal princ, princ2;
47 kadm5_principal_ent_rec ent;
48 char *password, *expression;
49 krb5_keyblock *new_keys;
55 krb5_unparse_name_fixed(contextp->context, contextp->caller,
56 client, sizeof(client));
58 sp = krb5_storage_from_data(in);
60 krb5_errx(contextp->context, 1, "out of memory");
62 krb5_ret_int32(sp, &cmd);
66 ret = krb5_ret_principal(sp, &princ);
69 ret = krb5_ret_int32(sp, &mask);
71 krb5_free_principal(contextp->context, princ);
74 mask |= KADM5_PRINCIPAL;
75 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
76 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
77 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_GET, princ);
79 krb5_free_principal(contextp->context, princ);
82 ret = kadm5_get_principal(kadm_handlep, princ, &ent, mask);
83 krb5_storage_free(sp);
84 sp = krb5_storage_emem();
85 krb5_store_int32(sp, ret);
87 kadm5_store_principal_ent(sp, &ent);
88 kadm5_free_principal_ent(kadm_handlep, &ent);
90 krb5_free_principal(contextp->context, princ);
95 ret = krb5_ret_principal(sp, &princ);
98 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
99 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
100 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_DELETE, princ);
102 krb5_free_principal(contextp->context, princ);
105 ret = kadm5_delete_principal(kadm_handlep, princ);
106 krb5_free_principal(contextp->context, princ);
107 krb5_storage_free(sp);
108 sp = krb5_storage_emem();
109 krb5_store_int32(sp, ret);
114 ret = kadm5_ret_principal_ent(sp, &ent);
117 ret = krb5_ret_int32(sp, &mask);
119 kadm5_free_principal_ent(contextp->context, &ent);
122 ret = krb5_ret_string(sp, &password);
124 kadm5_free_principal_ent(contextp->context, &ent);
127 krb5_unparse_name_fixed(contextp->context, ent.principal,
129 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
130 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_ADD,
133 kadm5_free_principal_ent(contextp->context, &ent);
134 memset(password, 0, strlen(password));
138 ret = kadm5_create_principal(kadm_handlep, &ent,
140 kadm5_free_principal_ent(kadm_handlep, &ent);
141 memset(password, 0, strlen(password));
143 krb5_storage_free(sp);
144 sp = krb5_storage_emem();
145 krb5_store_int32(sp, ret);
150 ret = kadm5_ret_principal_ent(sp, &ent);
153 ret = krb5_ret_int32(sp, &mask);
155 kadm5_free_principal_ent(contextp, &ent);
158 krb5_unparse_name_fixed(contextp->context, ent.principal,
160 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
161 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_MODIFY,
164 kadm5_free_principal_ent(contextp, &ent);
167 ret = kadm5_modify_principal(kadm_handlep, &ent, mask);
168 kadm5_free_principal_ent(kadm_handlep, &ent);
169 krb5_storage_free(sp);
170 sp = krb5_storage_emem();
171 krb5_store_int32(sp, ret);
176 ret = krb5_ret_principal(sp, &princ);
179 ret = krb5_ret_principal(sp, &princ2);
181 krb5_free_principal(contextp->context, princ);
184 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
185 krb5_unparse_name_fixed(contextp->context, princ2, name2, sizeof(name2));
186 krb5_warnx(contextp->context, "%s: %s %s -> %s",
187 client, op, name, name2);
188 ret = _kadm5_acl_check_permission(contextp,
191 || _kadm5_acl_check_permission(contextp,
195 krb5_free_principal(contextp->context, princ);
196 krb5_free_principal(contextp->context, princ2);
199 ret = kadm5_rename_principal(kadm_handlep, princ, princ2);
200 krb5_free_principal(contextp->context, princ);
201 krb5_free_principal(contextp->context, princ2);
202 krb5_storage_free(sp);
203 sp = krb5_storage_emem();
204 krb5_store_int32(sp, ret);
209 ret = krb5_ret_principal(sp, &princ);
212 ret = krb5_ret_string(sp, &password);
214 krb5_free_principal(contextp->context, princ);
217 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
218 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
221 * The change is allowed if at least one of:
223 * a) allowed by sysadmin
224 * b) it's for the principal him/herself and this was an
225 * initial ticket, but then, check with the password quality
227 * c) the user is on the CPW ACL.
230 if (krb5_config_get_bool_default(contextp->context, NULL, TRUE,
231 "kadmin", "allow_self_change_password", NULL)
233 && krb5_principal_compare (contextp->context, contextp->caller,
237 const char *pwd_reason;
239 pwd_data.data = password;
240 pwd_data.length = strlen(password);
242 pwd_reason = kadm5_check_password_quality (contextp->context,
244 if (pwd_reason != NULL)
245 ret = KADM5_PASS_Q_DICT;
249 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_CPW, princ);
252 krb5_free_principal(contextp->context, princ);
253 memset(password, 0, strlen(password));
257 ret = kadm5_chpass_principal(kadm_handlep, princ, password);
258 krb5_free_principal(contextp->context, princ);
259 memset(password, 0, strlen(password));
261 krb5_storage_free(sp);
262 sp = krb5_storage_emem();
263 krb5_store_int32(sp, ret);
266 case kadm_chpass_with_key:{
268 krb5_key_data *key_data;
271 op = "CHPASS_WITH_KEY";
272 ret = krb5_ret_principal(sp, &princ);
275 ret = krb5_ret_int32(sp, &n_key_data);
277 krb5_free_principal(contextp->context, princ);
280 /* n_key_data will be squeezed into an int16_t below. */
281 if (n_key_data < 0 || n_key_data >= 1 << 16 ||
282 (size_t)n_key_data > UINT_MAX/sizeof(*key_data)) {
284 krb5_free_principal(contextp->context, princ);
288 key_data = malloc (n_key_data * sizeof(*key_data));
289 if (key_data == NULL && n_key_data != 0) {
291 krb5_free_principal(contextp->context, princ);
295 for (i = 0; i < n_key_data; ++i) {
296 ret = kadm5_ret_key_data (sp, &key_data[i]);
300 kadm5_free_key_data (contextp, &dummy, key_data);
302 krb5_free_principal(contextp->context, princ);
307 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
308 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
311 * The change is only allowed if the user is on the CPW ACL,
312 * this it to force password quality check on the user.
315 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_CPW, princ);
317 int16_t dummy = n_key_data;
319 kadm5_free_key_data (contextp, &dummy, key_data);
321 krb5_free_principal(contextp->context, princ);
324 ret = kadm5_chpass_principal_with_key(kadm_handlep, princ,
325 n_key_data, key_data);
327 int16_t dummy = n_key_data;
328 kadm5_free_key_data (contextp, &dummy, key_data);
331 krb5_free_principal(contextp->context, princ);
332 krb5_storage_free(sp);
333 sp = krb5_storage_emem();
334 krb5_store_int32(sp, ret);
339 ret = krb5_ret_principal(sp, &princ);
342 krb5_unparse_name_fixed(contextp->context, princ, name, sizeof(name));
343 krb5_warnx(contextp->context, "%s: %s %s", client, op, name);
345 * The change is allowed if at least one of:
346 * a) it's for the principal him/herself and this was an initial ticket
347 * b) the user is on the CPW ACL.
351 && krb5_principal_compare (contextp->context, contextp->caller,
355 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_CPW, princ);
358 krb5_free_principal(contextp->context, princ);
361 ret = kadm5_randkey_principal(kadm_handlep, princ,
363 krb5_free_principal(contextp->context, princ);
364 krb5_storage_free(sp);
365 sp = krb5_storage_emem();
366 krb5_store_int32(sp, ret);
369 krb5_store_int32(sp, n_keys);
370 for(i = 0; i < n_keys; i++){
371 krb5_store_keyblock(sp, new_keys[i]);
372 krb5_free_keyblock_contents(contextp->context, &new_keys[i]);
378 case kadm_get_privs:{
380 ret = kadm5_get_privs(kadm_handlep, &privs);
381 krb5_storage_free(sp);
382 sp = krb5_storage_emem();
383 krb5_store_int32(sp, ret);
385 krb5_store_uint32(sp, privs);
388 case kadm_get_princs:{
390 ret = krb5_ret_int32(sp, &tmp);
394 ret = krb5_ret_string(sp, &expression);
399 krb5_warnx(contextp->context, "%s: %s %s", client, op,
400 expression ? expression : "*");
401 ret = _kadm5_acl_check_permission(contextp, KADM5_PRIV_LIST, NULL);
406 ret = kadm5_get_principals(kadm_handlep, expression, &princs, &n_princs);
408 krb5_storage_free(sp);
409 sp = krb5_storage_emem();
410 krb5_store_int32(sp, ret);
413 krb5_store_int32(sp, n_princs);
414 for(i = 0; i < n_princs; i++)
415 krb5_store_string(sp, princs[i]);
416 kadm5_free_name_list(kadm_handlep, princs, &n_princs);
421 krb5_warnx(contextp->context, "%s: UNKNOWN OP %d", client, cmd);
422 krb5_storage_free(sp);
423 sp = krb5_storage_emem();
424 krb5_store_int32(sp, KADM5_FAILURE);
427 krb5_storage_to_data(sp, out);
428 krb5_storage_free(sp);
431 krb5_warn(contextp->context, ret, "%s", op);
432 krb5_storage_seek(sp, 0, SEEK_SET);
433 krb5_store_int32(sp, ret);
434 krb5_storage_to_data(sp, out);
435 krb5_storage_free(sp);
440 v5_loop (krb5_context contextp,
441 krb5_auth_context ac,
442 krb5_boolean initial,
450 doing_useful_work = 0;
453 ret = krb5_read_priv_message(contextp, ac, &fd, &in);
454 if(ret == HEIM_ERR_EOF)
457 krb5_err(contextp, 1, ret, "krb5_read_priv_message");
458 doing_useful_work = 1;
459 kadmind_dispatch(kadm_handlep, initial, &in, &out);
461 ret = krb5_write_priv_message(contextp, ac, &fd, &out);
463 krb5_err(contextp, 1, ret, "krb5_write_priv_message");
468 match_appl_version(const void *data, const char *appl_version)
471 if(sscanf(appl_version, "KADM0.%u", &minor) != 1)
474 *(unsigned*)(intptr_t)data = minor;
479 handle_v5(krb5_context contextp,
488 krb5_boolean initial;
489 krb5_auth_context ac = NULL;
491 unsigned kadm_version;
492 kadm5_config_params realm_params;
494 ret = krb5_recvauth_match_version(contextp, &ac, &fd,
495 match_appl_version, &kadm_version,
496 NULL, KRB5_RECVAUTH_IGNORE_VERSION,
499 krb5_err(contextp, 1, ret, "krb5_recvauth");
501 ret = krb5_unparse_name (contextp, ticket->server, &server_name);
503 krb5_err (contextp, 1, ret, "krb5_unparse_name");
505 if (strncmp (server_name, KADM5_ADMIN_SERVICE,
506 strlen(KADM5_ADMIN_SERVICE)) != 0)
507 krb5_errx (contextp, 1, "ticket for strange principal (%s)",
512 memset(&realm_params, 0, sizeof(realm_params));
514 if(kadm_version == 1) {
516 ret = krb5_read_priv_message(contextp, ac, &fd, ¶ms);
518 krb5_err(contextp, 1, ret, "krb5_read_priv_message");
519 _kadm5_unmarshal_params(contextp, ¶ms, &realm_params);
522 initial = ticket->ticket.flags.initial;
523 ret = krb5_unparse_name(contextp, ticket->client, &client);
525 krb5_err (contextp, 1, ret, "krb5_unparse_name");
526 krb5_free_ticket (contextp, ticket);
527 ret = kadm5_s_init_with_password_ctx(contextp,
535 krb5_err (contextp, 1, ret, "kadm5_init_with_password_ctx");
536 v5_loop (contextp, ac, initial, kadm_handlep, fd);
540 kadmind_loop(krb5_context contextp,
544 u_char buf[sizeof(KRB5_SENDAUTH_VERSION) + 4];
548 n = krb5_net_read(contextp, &sock, buf, 4);
552 krb5_err(contextp, 1, errno, "read");
553 _krb5_get_int(buf, &len, 4);
555 if (len == sizeof(KRB5_SENDAUTH_VERSION)) {
557 n = krb5_net_read(contextp, &sock, buf + 4, len);
559 krb5_err (contextp, 1, errno, "reading sendauth version");
561 krb5_errx (contextp, 1, "EOF reading sendauth version");
563 if(memcmp(buf + 4, KRB5_SENDAUTH_VERSION, len) == 0) {
564 handle_v5(contextp, keytab, sock);
571 handle_mit(contextp, buf, len, sock);