270 lines
7.8 KiB
C
270 lines
7.8 KiB
C
/*
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* Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "ktutil_locl.h"
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RCSID("$Id$");
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static void*
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open_kadmin_connection(char *principal,
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const char *realm,
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char *admin_server,
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int server_port)
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{
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static kadm5_config_params conf;
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krb5_error_code ret;
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void *kadm_handle;
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memset(&conf, 0, sizeof(conf));
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if(realm) {
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conf.realm = strdup(realm);
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if (conf.realm == NULL) {
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krb5_set_error_message(context, 0, "malloc: out of memory");
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return NULL;
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}
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conf.mask |= KADM5_CONFIG_REALM;
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}
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if (admin_server) {
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conf.admin_server = admin_server;
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conf.mask |= KADM5_CONFIG_ADMIN_SERVER;
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}
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if (server_port) {
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conf.kadmind_port = htons(server_port);
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conf.mask |= KADM5_CONFIG_KADMIND_PORT;
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}
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/* should get realm from each principal, instead of doing
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everything with the same (local) realm */
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ret = kadm5_init_with_password_ctx(context,
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principal,
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NULL,
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KADM5_ADMIN_SERVICE,
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&conf, 0, 0,
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&kadm_handle);
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free(conf.realm);
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if(ret) {
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krb5_warn(context, ret, "kadm5_init_with_password");
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return NULL;
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}
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return kadm_handle;
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}
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static int
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parse_enctypes(struct get_options *opt,
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size_t *nks,
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krb5_key_salt_tuple **ks)
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{
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const char *str;
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char *s = NULL;
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char *tmp;
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size_t i;
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int ret;
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*nks = 0;
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*ks = NULL;
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if (opt->enctypes_strings.num_strings == 0) {
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str = krb5_config_get_string(context, NULL, "libdefaults",
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"supported_enctypes", NULL);
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if (str == NULL)
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str = "aes128-cts-hmac-sha1-96";
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return krb5_string_to_keysalts2(context, str, nks, ks);
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}
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for (i = 0; i < opt->enctypes_strings.num_strings; i++) {
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if (asprintf(&tmp, "%s%s%s", i ? s : "", i ? "," : "",
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opt->enctypes_strings.strings[i]) == -1) {
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free(s);
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return krb5_enomem(context);
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}
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free(s);
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s = tmp;
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}
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ret = krb5_string_to_keysalts2(context, s, nks, ks);
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free(s);
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return ret;
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}
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int
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kt_get(struct get_options *opt, int argc, char **argv)
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{
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krb5_error_code ret = 0;
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krb5_keytab keytab;
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void *kadm_handle = NULL;
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krb5_key_salt_tuple *ks = NULL;
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size_t nks;
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size_t i;
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int a, j, keep;
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unsigned int failed = 0;
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i = 0;
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keep = 1;
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if (opt->keepallold_flag) {
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keep = 2;
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i++;
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}
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if (opt->keepold_flag) {
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keep = 1;
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i++;
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}
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if (opt->pruneall_flag) {
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keep = 0;
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i++;
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}
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if (i > 1) {
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fprintf(stderr, "use only one of --keepold, --keepallold, or --pruneall\n");
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return EINVAL;
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}
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if ((ret = parse_enctypes(opt, &nks, &ks))) {
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fprintf(stderr, "invalid enctype(s)\n");
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return ret;
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}
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if((keytab = ktutil_open_keytab()) == NULL) {
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free(ks);
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return 1;
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}
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if(opt->realm_string)
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krb5_set_default_realm(context, opt->realm_string);
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for(a = 0; a < argc; a++){
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krb5_principal princ_ent;
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kadm5_principal_ent_rec princ;
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int mask = 0;
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krb5_keyblock *keys;
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int n_keys = 0;
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int created = 0;
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krb5_keytab_entry entry;
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ret = krb5_parse_name(context, argv[a], &princ_ent);
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if (ret) {
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krb5_warn(context, ret, "can't parse principal %s", argv[a]);
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failed++;
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continue;
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}
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memset(&princ, 0, sizeof(princ));
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princ.principal = princ_ent;
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mask |= KADM5_PRINCIPAL;
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princ.attributes |= KRB5_KDB_DISALLOW_ALL_TIX;
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mask |= KADM5_ATTRIBUTES;
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princ.princ_expire_time = 0;
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mask |= KADM5_PRINC_EXPIRE_TIME;
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if(kadm_handle == NULL) {
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const char *r;
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if(opt->realm_string != NULL)
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r = opt->realm_string;
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else
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r = krb5_principal_get_realm(context, princ_ent);
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kadm_handle = open_kadmin_connection(opt->principal_string,
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r,
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opt->admin_server_string,
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opt->server_port_integer);
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if(kadm_handle == NULL)
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break;
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}
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if (opt->create_flag) {
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ret = kadm5_create_principal(kadm_handle, &princ, mask, "thisIs_aUseless.password123");
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if(ret == 0)
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created = 1;
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else if(ret != KADM5_DUP) {
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krb5_warn(context, ret, "kadm5_create_principal(%s)", argv[a]);
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krb5_free_principal(context, princ_ent);
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failed++;
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continue;
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}
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}
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if (opt->change_keys_flag) {
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ret = kadm5_randkey_principal_3(kadm_handle, princ_ent, keep, nks, ks,
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&keys, &n_keys);
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if (ret) {
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krb5_warn(context, ret, "kadm5_randkey_principal(%s)", argv[a]);
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krb5_free_principal(context, princ_ent);
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failed++;
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continue;
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}
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}
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ret = kadm5_get_principal(kadm_handle, princ_ent, &princ,
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KADM5_PRINCIPAL | KADM5_KVNO | KADM5_ATTRIBUTES);
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if (ret) {
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krb5_warn(context, ret, "kadm5_get_principal(%s)", argv[a]);
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for (j = 0; j < n_keys; j++)
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krb5_free_keyblock_contents(context, &keys[j]);
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krb5_free_principal(context, princ_ent);
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failed++;
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continue;
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}
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if(!created && (princ.attributes & KRB5_KDB_DISALLOW_ALL_TIX))
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krb5_warnx(context, "%s: disallow-all-tix flag set - clearing", argv[a]);
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princ.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
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mask = KADM5_ATTRIBUTES;
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if(created) {
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princ.kvno = 1;
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mask |= KADM5_KVNO;
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}
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ret = kadm5_modify_principal(kadm_handle, &princ, mask);
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if (ret) {
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krb5_warn(context, ret, "kadm5_modify_principal(%s)", argv[a]);
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for (j = 0; j < n_keys; j++)
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krb5_free_keyblock_contents(context, &keys[j]);
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krb5_free_principal(context, princ_ent);
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failed++;
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continue;
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}
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for(j = 0; j < n_keys; j++) {
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entry.principal = princ_ent;
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entry.vno = princ.kvno;
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entry.keyblock = keys[j];
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entry.timestamp = time (NULL);
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ret = krb5_kt_add_entry(context, keytab, &entry);
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if (ret)
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krb5_warn(context, ret, "krb5_kt_add_entry");
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krb5_free_keyblock_contents(context, &keys[j]);
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}
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kadm5_free_principal_ent(kadm_handle, &princ);
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krb5_free_principal(context, princ_ent);
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}
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if (kadm_handle)
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kadm5_destroy(kadm_handle);
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krb5_kt_close(context, keytab);
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free(ks);
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return ret != 0 || failed > 0;
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}
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