239 lines
5.8 KiB
C
239 lines
5.8 KiB
C
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/*
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* Copyright (c) 2005 Kungliga Tekniska H<EFBFBD>gskolan
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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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/*
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* Check database for strange configurations on default principals
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*/
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#include "kadmin_locl.h"
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#include "kadmin-commands.h"
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RCSID("$Id: check.c 20962 2007-06-07 05:09:24Z lha $");
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static int
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get_check_entry(const char *name, kadm5_principal_ent_rec *ent)
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{
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krb5_error_code ret;
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krb5_principal principal;
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ret = krb5_parse_name(context, name, &principal);
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if (ret) {
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krb5_warn(context, ret, "krb5_unparse_name: %s", name);
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return 1;
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}
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memset(ent, 0, sizeof(*ent));
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ret = kadm5_get_principal(kadm_handle, principal, ent, 0);
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krb5_free_principal(context, principal);
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if(ret)
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return 1;
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return 0;
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}
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static int
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do_check_entry(krb5_principal principal, void *data)
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{
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krb5_error_code ret;
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kadm5_principal_ent_rec princ;
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char *name;
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int i;
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ret = krb5_unparse_name(context, principal, &name);
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if (ret)
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return 1;
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memset (&princ, 0, sizeof(princ));
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ret = kadm5_get_principal(kadm_handle, principal, &princ,
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KADM5_PRINCIPAL | KADM5_KEY_DATA);
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if(ret) {
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krb5_warn(context, ret, "Failed to get principal: %s", name);
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free(name);
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return 0;
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}
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for (i = 0; i < princ.n_key_data; i++) {
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size_t keysize;
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ret = krb5_enctype_keysize(context,
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princ.key_data[i].key_data_type[0],
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&keysize);
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if (ret == 0 && keysize != princ.key_data[i].key_data_length[0]) {
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krb5_warnx(context,
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"Principal %s enctype %d, wrong length: %lu\n",
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name, princ.key_data[i].key_data_type[0],
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(unsigned long)princ.key_data[i].key_data_length);
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}
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}
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free(name);
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kadm5_free_principal_ent(kadm_handle, &princ);
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return 0;
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}
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int
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check(void *opt, int argc, char **argv)
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{
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kadm5_principal_ent_rec ent;
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krb5_error_code ret;
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char *realm = NULL, *p, *p2;
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int found;
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if (argc == 0) {
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ret = krb5_get_default_realm(context, &realm);
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if (ret) {
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krb5_warn(context, ret, "krb5_get_default_realm");
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goto fail;
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}
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} else {
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realm = strdup(argv[0]);
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if (realm == NULL) {
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krb5_warnx(context, "malloc");
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goto fail;
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}
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}
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/*
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* Check krbtgt/REALM@REALM
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*
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* For now, just check existance
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*/
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if (asprintf(&p, "%s/%s@%s", KRB5_TGS_NAME, realm, realm) == -1) {
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krb5_warn(context, errno, "asprintf");
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goto fail;
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}
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ret = get_check_entry(p, &ent);
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if (ret) {
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printf("%s doesn't exist, are you sure %s is a realm in your database",
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p, realm);
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free(p);
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goto fail;
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}
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free(p);
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kadm5_free_principal_ent(kadm_handle, &ent);
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/*
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* Check kadmin/admin@REALM
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*/
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if (asprintf(&p, "kadmin/admin@%s", realm) == -1) {
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krb5_warn(context, errno, "asprintf");
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goto fail;
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}
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ret = get_check_entry(p, &ent);
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if (ret) {
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printf("%s doesn't exist, "
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"there is no way to do remote administration", p);
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free(p);
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goto fail;
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}
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free(p);
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kadm5_free_principal_ent(kadm_handle, &ent);
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/*
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* Check kadmin/changepw@REALM
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*/
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if (asprintf(&p, "kadmin/changepw@%s", realm) == -1) {
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krb5_warn(context, errno, "asprintf");
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goto fail;
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}
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ret = get_check_entry(p, &ent);
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if (ret) {
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printf("%s doesn't exist, "
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"there is no way to do change password", p);
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free(p);
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goto fail;
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}
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free(p);
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kadm5_free_principal_ent(kadm_handle, &ent);
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/*
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* Check for duplicate afs keys
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*/
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p2 = strdup(realm);
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if (p2 == NULL) {
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krb5_warn(context, errno, "malloc");
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free(p);
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goto fail;
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}
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strlwr(p2);
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if (asprintf(&p, "afs/%s@%s", p2, realm) == -1) {
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krb5_warn(context, errno, "asprintf");
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free(p2);
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goto fail;
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}
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free(p2);
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ret = get_check_entry(p, &ent);
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free(p);
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if (ret == 0) {
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kadm5_free_principal_ent(kadm_handle, &ent);
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found = 1;
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} else
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found = 0;
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if (asprintf(&p, "afs@%s", realm) == -1) {
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krb5_warn(context, errno, "asprintf");
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goto fail;
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}
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ret = get_check_entry(p, &ent);
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free(p);
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if (ret == 0) {
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kadm5_free_principal_ent(kadm_handle, &ent);
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if (found) {
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krb5_warnx(context, "afs@REALM and afs/cellname@REALM both exists");
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goto fail;
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}
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}
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foreach_principal("*", do_check_entry, "check", NULL);
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free(realm);
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return 0;
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fail:
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free(realm);
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return 1;
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}
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