diff options
Diffstat (limited to 'third_party/heimdal/admin/change.c')
| -rw-r--r-- | third_party/heimdal/admin/change.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/third_party/heimdal/admin/change.c b/third_party/heimdal/admin/change.c new file mode 100644 index 0000000..b9d0e83 --- /dev/null +++ b/third_party/heimdal/admin/change.c @@ -0,0 +1,297 @@ +/* + * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "ktutil_locl.h" + +RCSID("$Id$"); + +static krb5_error_code +change_entry(krb5_keytab keytab, + krb5_principal principal, + krb5_kvno kvno, + int keep, + size_t nkstuple, + krb5_key_salt_tuple *kstuple, + const char *realm, + const char *admin_server, + int server_port) +{ + krb5_error_code ret; + kadm5_config_params conf; + void *kadm_handle; + char *client_name; + krb5_keyblock *keys; + size_t i; + int num_keys; + + ret = krb5_unparse_name (context, principal, &client_name); + if (ret) { + krb5_warn (context, ret, "krb5_unparse_name"); + return ret; + } + + memset (&conf, 0, sizeof(conf)); + + if(realm == NULL) + realm = krb5_principal_get_realm(context, principal); + conf.realm = strdup(realm); + if (conf.realm == NULL) { + free (client_name); + krb5_set_error_message(context, ENOMEM, "malloc failed"); + return ENOMEM; + } + conf.mask |= KADM5_CONFIG_REALM; + + if (admin_server) { + conf.admin_server = strdup(admin_server); + if (conf.admin_server == NULL) { + free(client_name); + free(conf.realm); + krb5_set_error_message(context, ENOMEM, "malloc failed"); + return ENOMEM; + } + conf.mask |= KADM5_CONFIG_ADMIN_SERVER; + } + + if (server_port) { + conf.kadmind_port = htons(server_port); + conf.mask |= KADM5_CONFIG_KADMIND_PORT; + } + + ret = kadm5_init_with_skey_ctx (context, + client_name, + keytab_string, + KADM5_ADMIN_SERVICE, + &conf, 0, 0, + &kadm_handle); + free(conf.admin_server); + free(conf.realm); + if (ret) { + krb5_warn (context, ret, + "kadm5_c_init_with_skey_ctx: %s:", client_name); + free (client_name); + return ret; + } + ret = kadm5_randkey_principal_3(kadm_handle, principal, keep, nkstuple, + kstuple, &keys, &num_keys); + kadm5_destroy(kadm_handle); + if (ret) { + krb5_warn(context, ret, "kadm5_randkey_principal_3: %s:", client_name); + free (client_name); + return ret; + } + free(client_name); + for (i = 0; i < num_keys; ++i) { + krb5_keytab_entry new_entry; + + new_entry.principal = principal; + new_entry.timestamp = time (NULL); + new_entry.vno = kvno + 1; + new_entry.keyblock = keys[i]; + + ret = krb5_kt_add_entry (context, keytab, &new_entry); + if (ret) + krb5_warn (context, ret, "krb5_kt_add_entry"); + krb5_free_keyblock_contents (context, &keys[i]); + } + return ret; +} + +/* + * loop over all the entries in the keytab (or those given) and change + * their keys, writing the new keys + */ + +struct change_set { + krb5_principal principal; + krb5_kvno kvno; +}; + +int +kt_change(struct change_options *opt, int argc, char **argv) +{ + krb5_error_code ret; + krb5_keytab keytab; + krb5_kt_cursor cursor; + krb5_keytab_entry entry; + krb5_key_salt_tuple *kstuple = NULL; + const char *enctype; + size_t i, j, max, nkstuple; + int keep = 1; + struct change_set *changeset; + int errors = 0; + + i = 0; + + if (opt->keepold_flag) { + keep = 1; + i++; + } + if (opt->keepallold_flag) { + keep = 2; + i++; + } + if (opt->pruneall_flag) { + keep = 0; + i++; + } + if (i > 1) { + fprintf(stderr, "use only one of --keepold, --keepallold, or --pruneall\n"); + return EINVAL; + } + + enctype = opt->enctype_string; + if (enctype == NULL || enctype[0] == '\0') + enctype = krb5_config_get_string(context, NULL, "libdefaults", + "supported_enctypes", NULL); + if (enctype == NULL || enctype[0] == '\0') + enctype = "aes128-cts-hmac-sha1-96"; + ret = krb5_string_to_keysalts2(context, enctype, &nkstuple, &kstuple); + if (ret) { + fprintf(stderr, "enctype(s) unknown\n"); + return ret; + } + + /* XXX Parameterize keytab name */ + if ((keytab = ktutil_open_keytab()) == NULL) { + free(kstuple); + return 1; + } + + j = 0; + max = 0; + changeset = NULL; + + ret = krb5_kt_start_seq_get(context, keytab, &cursor); + if(ret){ + krb5_warn(context, ret, "%s", keytab_string); + goto out; + } + + while((ret = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0) { + int add = 0; + + for (i = 0; i < j; ++i) { + if (krb5_principal_compare (context, changeset[i].principal, + entry.principal)) { + if (changeset[i].kvno < entry.vno) + changeset[i].kvno = entry.vno; + break; + } + } + if (i < j) { + krb5_kt_free_entry (context, &entry); + continue; + } + + if (argc == 0) { + add = 1; + } else { + for (i = 0; i < argc; ++i) { + krb5_principal princ; + + ret = krb5_parse_name (context, argv[i], &princ); + if (ret) { + krb5_warn (context, ret, "%s", argv[i]); + continue; + } + if (krb5_principal_compare (context, princ, entry.principal)) + add = 1; + + krb5_free_principal (context, princ); + } + } + + if (add) { + if (j >= max) { + void *tmp; + + max = max(max * 2, 1); + tmp = realloc (changeset, max * sizeof(*changeset)); + if (tmp == NULL) { + krb5_kt_free_entry (context, &entry); + krb5_warnx (context, "realloc: out of memory"); + ret = ENOMEM; + break; + } + changeset = tmp; + } + ret = krb5_copy_principal (context, entry.principal, + &changeset[j].principal); + if (ret) { + krb5_warn (context, ret, "krb5_copy_principal"); + krb5_kt_free_entry (context, &entry); + break; + } + changeset[j].kvno = entry.vno; + ++j; + } + krb5_kt_free_entry (context, &entry); + } + krb5_kt_end_seq_get(context, keytab, &cursor); + + if (ret == KRB5_KT_END) { + for (i = 0; i < j; i++) { + if (verbose_flag) { + char *client_name; + + ret = krb5_unparse_name (context, changeset[i].principal, + &client_name); + if (ret) { + krb5_warn (context, ret, "krb5_unparse_name"); + } else { + printf("Changing %s kvno %d\n", + client_name, changeset[i].kvno); + free(client_name); + } + } + ret = change_entry(keytab, + changeset[i].principal, changeset[i].kvno, + keep, nkstuple, kstuple, + opt->realm_string, + opt->admin_server_string, + opt->server_port_integer); + if (ret != 0) + errors = 1; + } + } else + errors = 1; + for (i = 0; i < j; i++) + krb5_free_principal (context, changeset[i].principal); + free (changeset); + + out: + free(kstuple); + krb5_kt_close(context, keytab); + return errors; +} |