1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* kadmin/dbutil/kdb5_util.c - Administer a KDC database */
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27 * Copyright (C) 1998 by the FundsXpress, INC.
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31 * Export of this software from the United States of America may require
32 * a specific license from the United States Government. It is the
33 * responsibility of any person or organization contemplating export to
34 * obtain such a license before exporting.
36 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
37 * distribute this software and its documentation for any purpose and
38 * without fee is hereby granted, provided that the above copyright
39 * notice appear in all copies and that both that copyright notice and
40 * this permission notice appear in supporting documentation, and that
41 * the name of FundsXpress. not be used in advertising or publicity pertaining
42 * to distribution of the software without specific, written prior
43 * permission. FundsXpress makes no representations about the suitability of
44 * this software for any purpose. It is provided "as is" without express
45 * or implied warranty.
47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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52 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
53 * Use is subject to license terms.
57 #include <kadm5/admin.h>
59 #include <adm_proto.h>
61 #include "kdb5_util.h"
64 * XXX Ick, ick, ick. These global variables shouldn't be global....
66 char *mkey_password = 0;
69 * I can't figure out any way for this not to be global, given how ss
74 krb5_context util_context;
75 kadm5_config_params global_params;
80 _("Usage: kdb5_util [-r realm] [-d dbname] "
81 "[-k mkeytype] [-kv mkeyVNO]\n"
82 "\t [-M mkeyname] [-m] [-sf stashfilename] "
84 "\t [-x db_args]* cmd [cmd_options]\n"
87 "\tstash [-f keyfile]\n"
88 "\tdump [-old|-ov|-b6|-b7|-r13|-r18] [-verbose]\n"
89 "\t [-mkey_convert] [-new_mkey_file mkey_file]\n"
90 "\t [-rev] [-recurse] [filename [princs...]]\n"
91 "\tload [-old|-ov|-b6|-b7|-r13|-r18] [-verbose] [-update] "
93 "\tark [-e etype_list] principal\n"
94 "\tadd_mkey [-e etype] [-s]\n"
95 "\tuse_mkey kvno [time]\n"
97 /* avoid a string length compiler warning */
99 _("\tupdate_princ_encryption [-f] [-n] [-v] [princ-pattern]\n"
100 "\tpurge_mkeys [-f] [-n] [-v]\n"
101 "\ttabdump [-H] [-c] [-e] [-n] [-o outfile] dumptype\n"
102 "\nwhere,\n\t[-x db_args]* - any number of database specific "
104 "\t\t\tLook at each database documentation for supported "
109 krb5_keyblock master_keyblock;
110 krb5_kvno master_kvno; /* fetched */
111 extern krb5_principal master_princ;
113 krb5_db_entry *master_entry = NULL;
114 int valid_master_key = 0;
117 krb5_boolean manual_mkey = FALSE;
118 krb5_boolean dbactive = FALSE;
120 static int open_db_and_mkey(void);
122 static void add_random_key(int, char **);
124 typedef void (*cmd_func)(int, char **);
131 {"create", kdb5_create, 0},
132 {"destroy", kdb5_destroy, 1}, /* 1 opens the kdb */
133 {"stash", kdb5_stash, 1},
134 {"dump", dump_db, 1},
135 {"load", load_db, 0},
136 {"ark", add_random_key, 1},
137 {"add_mkey", kdb5_add_mkey, 1},
138 {"use_mkey", kdb5_use_mkey, 1},
139 {"list_mkeys", kdb5_list_mkeys, 1},
140 {"update_princ_encryption", kdb5_update_princ_encryption, 1},
141 {"purge_mkeys", kdb5_purge_mkeys, 1},
142 {"tabdump", tabdump, 1},
146 static struct _cmd_table *cmd_lookup(name)
149 struct _cmd_table *cmd = cmd_table;
151 if (strcmp(cmd->name, name) == 0)
160 #define ARG_VAL (--argc > 0 ? (koptarg = *(++argv)) : (char *)(usage(), NULL))
162 char **db5util_db_args = NULL;
163 int db5util_db_args_size = 0;
165 static void extended_com_err_fn (const char *myprog, errcode_t code,
166 const char *fmt, va_list args)
170 emsg = krb5_get_error_message (util_context, code);
171 fprintf (stderr, "%s: %s ", myprog, emsg);
172 krb5_free_error_message (util_context, emsg);
174 fprintf (stderr, "%s: ", myprog);
176 vfprintf (stderr, fmt, args);
177 fprintf (stderr, "\n");
180 int add_db_arg(char *arg)
183 db5util_db_args_size++;
184 temp = realloc(db5util_db_args,
185 sizeof(char *) * (db5util_db_args_size + 1));
188 db5util_db_args = temp;
189 db5util_db_args[db5util_db_args_size-1] = arg;
190 db5util_db_args[db5util_db_args_size] = NULL;
198 struct _cmd_table *cmd = NULL;
199 char *koptarg, **cmd_argv;
200 char *db_name_tmp = NULL;
202 krb5_error_code retval;
204 setlocale(LC_ALL, "");
205 set_com_err_hook(extended_com_err_fn);
208 * Ensure that "progname" is set before calling com_err.
210 progname = (strrchr(argv[0], '/') ?
211 strrchr(argv[0], '/') + 1 : argv[0]);
213 retval = kadm5_init_krb5_context(&util_context);
215 com_err (progname, retval, _("while initializing Kerberos code"));
219 cmd_argv = (char **) malloc(sizeof(char *)*argc);
220 if (cmd_argv == NULL) {
221 com_err(progname, ENOMEM, _("while creating sub-command arguments"));
224 memset(cmd_argv, 0, sizeof(char *)*argc);
229 if (strcmp(*argv, "-P") == 0 && ARG_VAL) {
230 mkey_password = koptarg;
232 } else if (strcmp(*argv, "-d") == 0 && ARG_VAL) {
233 global_params.dbname = koptarg;
234 global_params.mask |= KADM5_CONFIG_DBNAME;
236 if (asprintf(&db_name_tmp, "dbname=%s", global_params.dbname) < 0)
238 com_err(progname, ENOMEM,
239 _("while parsing command arguments"));
243 if (!add_db_arg(db_name_tmp)) {
244 com_err(progname, ENOMEM,
245 _("while parsing command arguments\n"));
249 } else if (strcmp(*argv, "-x") == 0 && ARG_VAL) {
250 if (!add_db_arg(koptarg)) {
251 com_err(progname, ENOMEM,
252 _("while parsing command arguments\n"));
256 } else if (strcmp(*argv, "-r") == 0 && ARG_VAL) {
257 global_params.realm = koptarg;
258 global_params.mask |= KADM5_CONFIG_REALM;
259 /* not sure this is really necessary */
260 if ((retval = krb5_set_default_realm(util_context,
261 global_params.realm))) {
262 com_err(progname, retval,
263 _("while setting default realm name"));
266 } else if (strcmp(*argv, "-k") == 0 && ARG_VAL) {
267 if (krb5_string_to_enctype(koptarg, &global_params.enctype)) {
268 com_err(progname, EINVAL, _(": %s is an invalid enctype"),
272 global_params.mask |= KADM5_CONFIG_ENCTYPE;
273 } else if (strcmp(*argv, "-kv") == 0 && ARG_VAL) {
274 global_params.kvno = (krb5_kvno) atoi(koptarg);
275 if (global_params.kvno == IGNORE_VNO) {
276 com_err(progname, EINVAL, _(": %s is an invalid mkeyVNO"),
280 global_params.mask |= KADM5_CONFIG_KVNO;
281 } else if (strcmp(*argv, "-M") == 0 && ARG_VAL) {
282 global_params.mkey_name = koptarg;
283 global_params.mask |= KADM5_CONFIG_MKEY_NAME;
284 } else if (strcmp(*argv, "-sf") == 0 && ARG_VAL) {
285 global_params.stash_file = koptarg;
286 global_params.mask |= KADM5_CONFIG_STASH_FILE;
287 } else if (strcmp(*argv, "-m") == 0) {
289 global_params.mkey_from_kbd = 1;
290 global_params.mask |= KADM5_CONFIG_MKEY_FROM_KBD;
291 } else if (cmd_lookup(*argv) != NULL) {
292 if (cmd_argv[0] == NULL)
297 cmd_argv[cmd_argc++] = *argv;
302 if (cmd_argv[0] == NULL)
305 if( !util_context->default_realm )
308 retval = krb5_get_default_realm(util_context, &temp);
311 com_err(progname, retval, _("while getting default realm"));
314 krb5_free_default_realm(util_context, temp);
317 retval = kadm5_get_config_params(util_context, 1,
318 &global_params, &global_params);
320 com_err(progname, retval,
321 _("while retreiving configuration parameters"));
326 * Dump creates files which should not be world-readable. It is
327 * easiest to do a single umask call here.
331 master_keyblock.enctype = global_params.enctype;
332 if ((master_keyblock.enctype != ENCTYPE_UNKNOWN) &&
333 (!krb5_c_valid_enctype(master_keyblock.enctype))) {
334 com_err(progname, KRB5_PROG_KEYTYPE_NOSUPP,
335 "while setting up enctype %d", master_keyblock.enctype);
338 cmd = cmd_lookup(cmd_argv[0]);
339 if (cmd->opendb && open_db_and_mkey())
342 if (global_params.iprop_enabled == TRUE)
343 ulog_set_role(util_context, IPROP_MASTER);
345 ulog_set_role(util_context, IPROP_NULL);
347 (*cmd->func)(cmd_argc, cmd_argv);
352 if( db5util_db_args )
353 free(db5util_db_args);
356 kadm5_free_config_params(util_context, &global_params);
357 krb5_free_context(util_context);
363 * open_db_and_mkey: Opens the KDC and policy database, and sets the
364 * global master_* variables. Sets dbactive to TRUE if the databases
365 * are opened, and valid_master_key to 1 if the global master
366 * variables are set properly. Returns 0 on success, and 1 on
367 * failure, but it is not considered a failure if the master key
368 * cannot be fetched (the master key stash file may not exist when the
371 static int open_db_and_mkey()
373 krb5_error_code retval;
374 krb5_data scratch, pwd, seed;
377 valid_master_key = 0;
379 if ((retval = krb5_db_open(util_context, db5util_db_args,
380 KRB5_KDB_OPEN_RW | KRB5_KDB_SRV_TYPE_ADMIN))) {
381 com_err(progname, retval, _("while initializing database"));
386 /* assemble & parse the master key name */
388 if ((retval = krb5_db_setup_mkey_name(util_context,
389 global_params.mkey_name,
391 &mkey_fullname, &master_princ))) {
392 com_err(progname, retval, _("while setting up master key name"));
396 if ((retval = krb5_db_get_principal(util_context, master_princ, 0,
398 com_err(progname, retval, _("while retrieving master entry"));
400 (void) krb5_db_fini(util_context);
404 if (global_params.mask & KADM5_CONFIG_KVNO)
405 master_kvno = global_params.kvno; /* user specified */
407 master_kvno = IGNORE_VNO;
409 /* the databases are now open, and the master principal exists */
413 pwd.data = mkey_password;
414 pwd.length = strlen(mkey_password);
415 retval = krb5_principal2salt(util_context, master_princ, &scratch);
417 com_err(progname, retval, _("while calculated master key salt"));
422 /* If no encryption type is set, use the default */
423 if (master_keyblock.enctype == ENCTYPE_UNKNOWN)
424 master_keyblock.enctype = DEFAULT_KDC_ENCTYPE;
425 if (!krb5_c_valid_enctype(master_keyblock.enctype))
426 com_err(progname, KRB5_PROG_KEYTYPE_NOSUPP,
427 "while setting up enctype %d",
428 master_keyblock.enctype);
430 retval = krb5_c_string_to_key(util_context, master_keyblock.enctype,
431 &pwd, &scratch, &master_keyblock);
433 com_err(progname, retval,
434 _("while transforming master key from password"));
442 if ((retval = krb5_db_fetch_mkey(util_context, master_princ,
443 master_keyblock.enctype,
445 global_params.stash_file,
447 0, &master_keyblock))) {
448 com_err(progname, retval, _("while reading master key"));
449 com_err(progname, 0, _("Warning: proceeding without master key"));
455 if ((retval = krb5_db_fetch_mkey_list(util_context, master_princ,
456 &master_keyblock))) {
457 com_err(progname, retval, "while getting master key list");
458 com_err(progname, 0, "Warning: proceeding without master key list");
463 seed.length = master_keyblock.length;
464 seed.data = (char *) master_keyblock.contents;
466 if ((retval = krb5_c_random_seed(util_context, &seed))) {
467 com_err(progname, retval, _("while seeding random number generator"));
469 memset(master_keyblock.contents, 0, master_keyblock.length);
470 krb5_free_keyblock_contents(util_context, &master_keyblock);
474 if (global_params.iprop_enabled) {
475 if (ulog_map(util_context, global_params.iprop_logfile,
476 global_params.iprop_ulogsize)) {
477 fprintf(stderr, _("%s: Could not map log\n"), progname);
483 valid_master_key = 1;
495 krb5_error_code retval;
496 static krb5_boolean finished = 0;
500 ulog_fini(util_context);
501 retval = krb5_db_fini(util_context);
502 zapfree(master_keyblock.contents, master_keyblock.length);
503 krb5_free_principal(util_context, master_princ);
505 if (retval && retval != KRB5_KDB_DBNOTINITED) {
506 com_err(progname, retval, _("while closing database"));
514 add_random_key(argc, argv)
519 krb5_principal princ;
520 krb5_db_entry *dbent;
523 krb5_key_salt_tuple *keysalts = NULL;
524 krb5_int32 num_keysalts = 0;
530 krb5_keyblock *tmp_mkey;
534 for (argv++, argc--; *argv; argv++, argc--) {
535 if (!strcmp(*argv, "-e")) {
545 ret = krb5_parse_name(util_context, pr_str, &princ);
547 com_err(me, ret, _("while parsing principal name %s"), pr_str);
551 ret = krb5_db_get_principal(util_context, princ, 0, &dbent);
553 com_err(me, ret, _("while fetching principal %s"), pr_str);
557 ret = krb5_string_to_keysalts(ks_str,
562 com_err(me, ret, _("while parsing keysalts %s"), ks_str);
566 if (!num_keysalts || keysalts == NULL) {
567 num_keysalts = global_params.num_keysalts;
568 keysalts = global_params.keysalts;
573 /* Find the mkey used to protect the existing keys */
574 ret = krb5_dbe_find_mkey(util_context, dbent, &tmp_mkey);
576 com_err(me, ret, _("while finding mkey"));
577 krb5_db_free_principal(util_context, dbent);
582 ret = krb5_dbe_ark(util_context, tmp_mkey, keysalts, num_keysalts, dbent);
586 com_err(me, ret, "while randomizing principal %s", pr_str);
587 krb5_db_free_principal(util_context, dbent);
591 dbent->attributes &= ~KRB5_KDB_REQUIRES_PWCHANGE;
592 ret = krb5_timeofday(util_context, &now);
594 com_err(me, ret, _("while getting time"));
595 krb5_db_free_principal(util_context, dbent);
599 ret = krb5_dbe_update_last_pwd_change(util_context, dbent, now);
601 com_err(me, ret, _("while setting changetime"));
602 krb5_db_free_principal(util_context, dbent);
606 ret = krb5_db_put_principal(util_context, dbent);
607 krb5_db_free_principal(util_context, dbent);
609 com_err(me, ret, _("while saving principal %s"), pr_str);
613 printf(_("%s changed\n"), pr_str);