diff options
Diffstat (limited to 'admin/change.c')
| -rw-r--r-- | admin/change.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/admin/change.c b/admin/change.c new file mode 100644 index 0000000000000..01f69c41574cc --- /dev/null +++ b/admin/change.c @@ -0,0 +1,252 @@ +/* + * 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: change.c 15578 2005-07-07 20:44:48Z lha $"); + +static krb5_error_code +change_entry (krb5_keytab keytab, + krb5_principal principal, krb5_kvno kvno, + 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; + int num_keys; + int i; + + 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_string(context, "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_string(context, "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 (kadm_handle, principal, &keys, &num_keys); + kadm5_destroy (kadm_handle); + if (ret) { + krb5_warn(context, ret, "kadm5_randkey_principal: %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; + int i, j, max; + struct change_set *changeset; + int errors = 0; + + if((keytab = ktutil_open_keytab()) == NULL) + 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) { + ret = 0; + 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, + 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: + krb5_kt_close(context, keytab); + return errors; +} |