/* $NetBSD: add.c,v 1.2.22.1 2023/08/11 13:39:46 martin Exp $ */ /* * 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("$NetBSD: add.c,v 1.2.22.1 2023/08/11 13:39:46 martin Exp $"); static char * readstring(const char *prompt, char *buf, size_t len) { printf("%s", prompt); if (fgets(buf, len, stdin) == NULL) return NULL; buf[strcspn(buf, "\r\n")] = '\0'; return buf; } int kt_add(struct add_options *opt, int argc, char **argv) { krb5_error_code ret; krb5_keytab keytab; krb5_keytab_entry entry; char buf[1024]; krb5_enctype enctype; if((keytab = ktutil_open_keytab()) == NULL) return 1; memset(&entry, 0, sizeof(entry)); if(opt->principal_string == NULL) { if(readstring("Principal: ", buf, sizeof(buf)) == NULL) return 1; opt->principal_string = buf; } ret = krb5_parse_name(context, opt->principal_string, &entry.principal); if(ret) { krb5_warn(context, ret, "%s", opt->principal_string); goto out; } if(opt->enctype_string == NULL) { if(readstring("Encryption type: ", buf, sizeof(buf)) == NULL) { ret = 1; goto out; } opt->enctype_string = buf; } ret = krb5_string_to_enctype(context, opt->enctype_string, &enctype); if(ret) { int t; if(sscanf(opt->enctype_string, "%d", &t) == 1) enctype = t; else { krb5_warn(context, ret, "%s", opt->enctype_string); goto out; } } if(opt->kvno_integer == -1) { if(readstring("Key version: ", buf, sizeof(buf)) == NULL) { ret = 1; goto out; } if(sscanf(buf, "%u", &opt->kvno_integer) != 1) goto out; } if(opt->password_string == NULL && opt->random_flag == 0) { if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Password: ", UI_UTIL_FLAG_VERIFY)) { ret = 1; goto out; } opt->password_string = buf; } if(opt->password_string) { if (opt->hex_flag) { size_t len; void *data; len = (strlen(opt->password_string) + 1) / 2; data = malloc(len); if (data == NULL) { krb5_warn(context, ENOMEM, "malloc"); goto out; } if ((size_t)hex_decode(opt->password_string, data, len) != len) { free(data); krb5_warn(context, ENOMEM, "hex decode failed"); goto out; } ret = krb5_keyblock_init(context, enctype, data, len, &entry.keyblock); free(data); } else if (!opt->salt_flag) { krb5_salt salt; krb5_data pw; salt.salttype = KRB5_PW_SALT; salt.saltvalue.data = NULL; salt.saltvalue.length = 0; pw.data = (void*)opt->password_string; pw.length = strlen(opt->password_string); ret = krb5_string_to_key_data_salt(context, enctype, pw, salt, &entry.keyblock); } else { ret = krb5_string_to_key(context, enctype, opt->password_string, entry.principal, &entry.keyblock); } memset (opt->password_string, 0, strlen(opt->password_string)); } else { ret = krb5_generate_random_keyblock(context, enctype, &entry.keyblock); } if(ret) { krb5_warn(context, ret, "add"); goto out; } entry.vno = opt->kvno_integer; entry.timestamp = time (NULL); ret = krb5_kt_add_entry(context, keytab, &entry); if(ret) krb5_warn(context, ret, "add"); out: krb5_kt_free_entry(context, &entry); krb5_kt_close(context, keytab); return ret != 0; }