1339 lines
33 KiB
C
1339 lines
33 KiB
C
/*
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* Copyright (c) 1997 - 2005 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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* Portions Copyright (c) 2009 Apple Inc. 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 "krb5_locl.h"
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#include <com_err.h>
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#define INIT_FIELD(C, T, E, D, F) \
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(C)->E = krb5_config_get_ ## T ## _default ((C), NULL, (D), \
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"libdefaults", F, NULL)
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#define INIT_FLAG(C, O, V, D, F) \
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do { \
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if (krb5_config_get_bool_default((C), NULL, (D),"libdefaults", F, NULL)) { \
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(C)->O |= V; \
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} \
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} while(0)
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/*
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* Set the list of etypes `ret_etypes' from the configuration variable
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* `name'
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*/
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static krb5_error_code
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set_etypes (krb5_context context,
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const char *name,
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krb5_enctype **ret_enctypes)
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{
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char **etypes_str;
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krb5_enctype *etypes = NULL;
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etypes_str = krb5_config_get_strings(context, NULL, "libdefaults",
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name, NULL);
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if(etypes_str){
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int i, j, k;
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for(i = 0; etypes_str[i]; i++);
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etypes = malloc((i+1) * sizeof(*etypes));
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if (etypes == NULL) {
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krb5_config_free_strings (etypes_str);
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krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
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return ENOMEM;
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}
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for(j = 0, k = 0; j < i; j++) {
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krb5_enctype e;
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if(krb5_string_to_enctype(context, etypes_str[j], &e) != 0)
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continue;
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if (krb5_enctype_valid(context, e) != 0)
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continue;
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etypes[k++] = e;
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}
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etypes[k] = ETYPE_NULL;
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krb5_config_free_strings(etypes_str);
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}
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*ret_enctypes = etypes;
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return 0;
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}
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/*
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* read variables from the configuration file and set in `context'
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*/
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static krb5_error_code
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init_context_from_config_file(krb5_context context)
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{
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krb5_error_code ret;
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const char * tmp;
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char **s;
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krb5_enctype *tmptypes;
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INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
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INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
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INIT_FIELD(context, int, max_retries, 3, "max_retries");
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INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
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ret = set_etypes (context, "default_etypes", &tmptypes);
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if(ret)
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return ret;
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free(context->etypes);
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context->etypes = tmptypes;
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ret = set_etypes (context, "default_etypes_des", &tmptypes);
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if(ret)
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return ret;
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free(context->etypes_des);
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context->etypes_des = tmptypes;
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/* default keytab name */
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tmp = NULL;
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if(!issuid())
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tmp = getenv("KRB5_KTNAME");
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if(tmp != NULL)
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context->default_keytab = tmp;
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else
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INIT_FIELD(context, string, default_keytab,
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KEYTAB_DEFAULT, "default_keytab_name");
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INIT_FIELD(context, string, default_keytab_modify,
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NULL, "default_keytab_modify_name");
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INIT_FIELD(context, string, time_fmt,
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"%Y-%m-%dT%H:%M:%S", "time_format");
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INIT_FIELD(context, string, date_fmt,
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"%Y-%m-%d", "date_format");
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INIT_FIELD(context, bool, log_utc,
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FALSE, "log_utc");
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/* init dns-proxy slime */
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tmp = krb5_config_get_string(context, NULL, "libdefaults",
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"dns_proxy", NULL);
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if(tmp)
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roken_gethostby_setup(context->http_proxy, tmp);
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krb5_free_host_realm (context, context->default_realms);
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context->default_realms = NULL;
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{
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krb5_addresses addresses;
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char **adr, **a;
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krb5_set_extra_addresses(context, NULL);
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adr = krb5_config_get_strings(context, NULL,
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"libdefaults",
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"extra_addresses",
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NULL);
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memset(&addresses, 0, sizeof(addresses));
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for(a = adr; a && *a; a++) {
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ret = krb5_parse_address(context, *a, &addresses);
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if (ret == 0) {
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krb5_add_extra_addresses(context, &addresses);
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krb5_free_addresses(context, &addresses);
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}
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}
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krb5_config_free_strings(adr);
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krb5_set_ignore_addresses(context, NULL);
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adr = krb5_config_get_strings(context, NULL,
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"libdefaults",
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"ignore_addresses",
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NULL);
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memset(&addresses, 0, sizeof(addresses));
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for(a = adr; a && *a; a++) {
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ret = krb5_parse_address(context, *a, &addresses);
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if (ret == 0) {
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krb5_add_ignore_addresses(context, &addresses);
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krb5_free_addresses(context, &addresses);
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}
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}
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krb5_config_free_strings(adr);
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}
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INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
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INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
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/* prefer dns_lookup_kdc over srv_lookup. */
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INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
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INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
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INIT_FIELD(context, int, large_msg_size, 1400, "large_message_size");
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INIT_FLAG(context, flags, KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME, TRUE, "dns_canonicalize_hostname");
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INIT_FLAG(context, flags, KRB5_CTX_F_CHECK_PAC, TRUE, "check_pac");
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context->default_cc_name = NULL;
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context->default_cc_name_set = 0;
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ret = krb5_config_get_bool_default(context, NULL, FALSE,
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"libdefaults",
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"allow_weak_crypto", NULL);
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if (ret) {
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krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
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krb5_enctype_enable(context, ETYPE_DES_CBC_MD4);
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krb5_enctype_enable(context, ETYPE_DES_CBC_MD5);
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krb5_enctype_enable(context, ETYPE_DES_CBC_NONE);
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krb5_enctype_enable(context, ETYPE_DES_CFB64_NONE);
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krb5_enctype_enable(context, ETYPE_DES_PCBC_NONE);
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}
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s = krb5_config_get_strings(context, NULL, "logging", "krb5", NULL);
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if(s) {
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char **p;
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krb5_initlog(context, "libkrb5", &context->debug_dest);
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for(p = s; *p; p++)
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krb5_addlog_dest(context, context->debug_dest, *p);
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krb5_config_free_strings(s);
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}
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return 0;
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}
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static krb5_error_code
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cc_ops_register(krb5_context context)
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{
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context->cc_ops = NULL;
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context->num_cc_ops = 0;
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#ifndef KCM_IS_API_CACHE
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krb5_cc_register(context, &krb5_acc_ops, TRUE);
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#endif
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krb5_cc_register(context, &krb5_fcc_ops, TRUE);
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krb5_cc_register(context, &krb5_mcc_ops, TRUE);
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#ifdef HAVE_SCC
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krb5_cc_register(context, &krb5_scc_ops, TRUE);
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#endif
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#ifdef HAVE_KCM
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#ifdef KCM_IS_API_CACHE
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krb5_cc_register(context, &krb5_akcm_ops, TRUE);
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#endif
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krb5_cc_register(context, &krb5_kcm_ops, TRUE);
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#endif
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return 0;
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}
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static krb5_error_code
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kt_ops_register(krb5_context context)
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{
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context->num_kt_types = 0;
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context->kt_types = NULL;
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krb5_kt_register (context, &krb5_fkt_ops);
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krb5_kt_register (context, &krb5_wrfkt_ops);
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krb5_kt_register (context, &krb5_javakt_ops);
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krb5_kt_register (context, &krb5_mkt_ops);
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#ifndef HEIMDAL_SMALLER
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krb5_kt_register (context, &krb5_akf_ops);
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#endif
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krb5_kt_register (context, &krb5_any_ops);
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return 0;
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}
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/**
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* Initializes the context structure and reads the configuration file
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* /etc/krb5.conf. The structure should be freed by calling
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* krb5_free_context() when it is no longer being used.
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*
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* @param context pointer to returned context
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*
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* @return Returns 0 to indicate success. Otherwise an errno code is
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* returned. Failure means either that something bad happened during
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* initialization (typically ENOMEM) or that Kerberos should not be
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* used ENXIO.
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_init_context(krb5_context *context)
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{
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krb5_context p;
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krb5_error_code ret;
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char **files;
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*context = NULL;
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/* should have a run_once */
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bindtextdomain(HEIMDAL_TEXTDOMAIN, HEIMDAL_LOCALEDIR);
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p = calloc(1, sizeof(*p));
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if(!p)
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return ENOMEM;
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p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
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if (p->mutex == NULL) {
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free(p);
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return ENOMEM;
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}
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HEIMDAL_MUTEX_init(p->mutex);
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p->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
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ret = krb5_get_default_config_files(&files);
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if(ret)
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goto out;
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ret = krb5_set_config_files(p, files);
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krb5_free_config_files(files);
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if(ret)
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goto out;
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/* init error tables */
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krb5_init_ets(p);
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cc_ops_register(p);
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kt_ops_register(p);
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#ifdef PKINIT
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ret = hx509_context_init(&p->hx509ctx);
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if (ret)
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goto out;
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#endif
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out:
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if(ret) {
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krb5_free_context(p);
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p = NULL;
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}
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*context = p;
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return ret;
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}
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#ifndef HEIMDAL_SMALLER
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/*
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*
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*/
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static krb5_error_code
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copy_etypes (krb5_context context,
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krb5_enctype *enctypes,
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krb5_enctype **ret_enctypes)
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{
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unsigned int i;
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for (i = 0; enctypes[i]; i++)
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;
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i++;
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*ret_enctypes = malloc(sizeof(ret_enctypes[0]) * i);
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if (*ret_enctypes == NULL) {
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krb5_set_error_message(context, ENOMEM,
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N_("malloc: out of memory", ""));
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return ENOMEM;
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}
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memcpy(*ret_enctypes, enctypes, sizeof(ret_enctypes[0]) * i);
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return 0;
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}
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/**
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* Make a copy for the Kerberos 5 context, the new krb5_context shoud
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* be freed with krb5_free_context().
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*
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* @param context the Kerberos context to copy
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* @param out the copy of the Kerberos, set to NULL error.
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*
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* @return Returns 0 to indicate success. Otherwise an kerberos et
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* error code is returned, see krb5_get_error_message().
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*
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* @ingroup krb5
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_context(krb5_context context, krb5_context *out)
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{
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krb5_error_code ret;
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krb5_context p;
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*out = NULL;
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p = calloc(1, sizeof(*p));
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if (p == NULL) {
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krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
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return ENOMEM;
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}
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p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
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if (p->mutex == NULL) {
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krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
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free(p);
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return ENOMEM;
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}
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HEIMDAL_MUTEX_init(p->mutex);
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|
|
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if (context->default_cc_name)
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p->default_cc_name = strdup(context->default_cc_name);
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if (context->default_cc_name_env)
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p->default_cc_name_env = strdup(context->default_cc_name_env);
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if (context->etypes) {
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ret = copy_etypes(context, context->etypes, &p->etypes);
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if (ret)
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goto out;
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}
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if (context->etypes_des) {
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ret = copy_etypes(context, context->etypes_des, &p->etypes_des);
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if (ret)
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goto out;
|
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}
|
|
|
|
if (context->default_realms) {
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ret = krb5_copy_host_realm(context,
|
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context->default_realms, &p->default_realms);
|
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if (ret)
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goto out;
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}
|
|
|
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ret = _krb5_config_copy(context, context->cf, &p->cf);
|
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if (ret)
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goto out;
|
|
|
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/* XXX should copy */
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krb5_init_ets(p);
|
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cc_ops_register(p);
|
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kt_ops_register(p);
|
|
|
|
#if 0 /* XXX */
|
|
if(context->warn_dest != NULL)
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;
|
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if(context->debug_dest != NULL)
|
|
;
|
|
#endif
|
|
|
|
ret = krb5_set_extra_addresses(p, context->extra_addresses);
|
|
if (ret)
|
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goto out;
|
|
ret = krb5_set_extra_addresses(p, context->ignore_addresses);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = _krb5_copy_send_to_kdc_func(p, context);
|
|
if (ret)
|
|
goto out;
|
|
|
|
*out = p;
|
|
|
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return 0;
|
|
|
|
out:
|
|
krb5_free_context(p);
|
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return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
/**
|
|
* Frees the krb5_context allocated by krb5_init_context().
|
|
*
|
|
* @param context context to be freed.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_free_context(krb5_context context)
|
|
{
|
|
if (context->default_cc_name)
|
|
free(context->default_cc_name);
|
|
if (context->default_cc_name_env)
|
|
free(context->default_cc_name_env);
|
|
free(context->etypes);
|
|
free(context->etypes_des);
|
|
krb5_free_host_realm (context, context->default_realms);
|
|
krb5_config_file_free (context, context->cf);
|
|
free_error_table (context->et_list);
|
|
free(context->cc_ops);
|
|
free(context->kt_types);
|
|
krb5_clear_error_message(context);
|
|
if(context->warn_dest != NULL)
|
|
krb5_closelog(context, context->warn_dest);
|
|
if(context->debug_dest != NULL)
|
|
krb5_closelog(context, context->debug_dest);
|
|
krb5_set_extra_addresses(context, NULL);
|
|
krb5_set_ignore_addresses(context, NULL);
|
|
krb5_set_send_to_kdc_func(context, NULL, NULL);
|
|
|
|
HEIMDAL_MUTEX_destroy(context->mutex);
|
|
free(context->mutex);
|
|
|
|
memset(context, 0, sizeof(*context));
|
|
free(context);
|
|
}
|
|
|
|
/**
|
|
* Reinit the context from a new set of filenames.
|
|
*
|
|
* @param context context to add configuration too.
|
|
* @param filenames array of filenames, end of list is indicated with a NULL filename.
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_config_files(krb5_context context, char **filenames)
|
|
{
|
|
krb5_error_code ret;
|
|
krb5_config_binding *tmp = NULL;
|
|
while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
|
|
ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
|
|
if(ret != 0 && ret != ENOENT && ret != EACCES && ret != EPERM) {
|
|
krb5_config_file_free(context, tmp);
|
|
return ret;
|
|
}
|
|
filenames++;
|
|
}
|
|
#if 0
|
|
/* with this enabled and if there are no config files, Kerberos is
|
|
considererd disabled */
|
|
if(tmp == NULL)
|
|
return ENXIO;
|
|
#endif
|
|
krb5_config_file_free(context, context->cf);
|
|
context->cf = tmp;
|
|
ret = init_context_from_config_file(context);
|
|
return ret;
|
|
}
|
|
|
|
static krb5_error_code
|
|
add_file(char ***pfilenames, int *len, char *file)
|
|
{
|
|
char **pp = *pfilenames;
|
|
int i;
|
|
|
|
for(i = 0; i < *len; i++) {
|
|
if(strcmp(pp[i], file) == 0) {
|
|
free(file);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
pp = realloc(*pfilenames, (*len + 2) * sizeof(*pp));
|
|
if (pp == NULL) {
|
|
free(file);
|
|
return ENOMEM;
|
|
}
|
|
|
|
pp[*len] = file;
|
|
pp[*len + 1] = NULL;
|
|
*pfilenames = pp;
|
|
*len += 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* `pq' isn't free, it's up the the caller
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_prepend_config_files(const char *filelist, char **pq, char ***ret_pp)
|
|
{
|
|
krb5_error_code ret;
|
|
const char *p, *q;
|
|
char **pp;
|
|
int len;
|
|
char *fn;
|
|
|
|
pp = NULL;
|
|
|
|
len = 0;
|
|
p = filelist;
|
|
while(1) {
|
|
ssize_t l;
|
|
q = p;
|
|
l = strsep_copy(&q, ":", NULL, 0);
|
|
if(l == -1)
|
|
break;
|
|
fn = malloc(l + 1);
|
|
if(fn == NULL) {
|
|
krb5_free_config_files(pp);
|
|
return ENOMEM;
|
|
}
|
|
(void)strsep_copy(&p, ":", fn, l + 1);
|
|
ret = add_file(&pp, &len, fn);
|
|
if (ret) {
|
|
krb5_free_config_files(pp);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (pq != NULL) {
|
|
int i;
|
|
|
|
for (i = 0; pq[i] != NULL; i++) {
|
|
fn = strdup(pq[i]);
|
|
if (fn == NULL) {
|
|
krb5_free_config_files(pp);
|
|
return ENOMEM;
|
|
}
|
|
ret = add_file(&pp, &len, fn);
|
|
if (ret) {
|
|
krb5_free_config_files(pp);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
*ret_pp = pp;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Prepend the filename to the global configuration list.
|
|
*
|
|
* @param filelist a filename to add to the default list of filename
|
|
* @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_prepend_config_files_default(const char *filelist, char ***pfilenames)
|
|
{
|
|
krb5_error_code ret;
|
|
char **defpp, **pp = NULL;
|
|
|
|
ret = krb5_get_default_config_files(&defpp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = krb5_prepend_config_files(filelist, defpp, &pp);
|
|
krb5_free_config_files(defpp);
|
|
if (ret) {
|
|
return ret;
|
|
}
|
|
*pfilenames = pp;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get the global configuration list.
|
|
*
|
|
* @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_default_config_files(char ***pfilenames)
|
|
{
|
|
const char *files = NULL;
|
|
|
|
if (pfilenames == NULL)
|
|
return EINVAL;
|
|
if(!issuid())
|
|
files = getenv("KRB5_CONFIG");
|
|
if (files == NULL)
|
|
files = krb5_config_file;
|
|
|
|
return krb5_prepend_config_files(files, NULL, pfilenames);
|
|
}
|
|
|
|
/**
|
|
* Free a list of configuration files.
|
|
*
|
|
* @param filenames list, terminated with a NULL pointer, to be
|
|
* freed. NULL is an valid argument.
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_free_config_files(char **filenames)
|
|
{
|
|
char **p;
|
|
for(p = filenames; p && *p != NULL; p++)
|
|
free(*p);
|
|
free(filenames);
|
|
}
|
|
|
|
/**
|
|
* Returns the list of Kerberos encryption types sorted in order of
|
|
* most preferred to least preferred encryption type. Note that some
|
|
* encryption types might be disabled, so you need to check with
|
|
* krb5_enctype_valid() before using the encryption type.
|
|
*
|
|
* @return list of enctypes, terminated with ETYPE_NULL. Its a static
|
|
* array completed into the Kerberos library so the content doesn't
|
|
* need to be freed.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
const krb5_enctype * KRB5_LIB_FUNCTION
|
|
krb5_kerberos_enctypes(krb5_context context)
|
|
{
|
|
static const krb5_enctype p[] = {
|
|
ETYPE_AES256_CTS_HMAC_SHA1_96,
|
|
ETYPE_AES128_CTS_HMAC_SHA1_96,
|
|
ETYPE_DES3_CBC_SHA1,
|
|
ETYPE_DES3_CBC_MD5,
|
|
ETYPE_ARCFOUR_HMAC_MD5,
|
|
ETYPE_DES_CBC_MD5,
|
|
ETYPE_DES_CBC_MD4,
|
|
ETYPE_DES_CBC_CRC,
|
|
ETYPE_NULL
|
|
};
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* set `etype' to a malloced list of the default enctypes
|
|
*/
|
|
|
|
static krb5_error_code
|
|
default_etypes(krb5_context context, krb5_enctype **etype)
|
|
{
|
|
const krb5_enctype *p;
|
|
krb5_enctype *e = NULL, *ep;
|
|
int i, n = 0;
|
|
|
|
p = krb5_kerberos_enctypes(context);
|
|
|
|
for (i = 0; p[i] != ETYPE_NULL; i++) {
|
|
if (krb5_enctype_valid(context, p[i]) != 0)
|
|
continue;
|
|
ep = realloc(e, (n + 2) * sizeof(*e));
|
|
if (ep == NULL) {
|
|
free(e);
|
|
krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
e = ep;
|
|
e[n] = p[i];
|
|
e[n + 1] = ETYPE_NULL;
|
|
n++;
|
|
}
|
|
*etype = e;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Set the default encryption types that will be use in communcation
|
|
* with the KDC, clients and servers.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param etypes Encryption types, array terminated with ETYPE_NULL (0).
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_default_in_tkt_etypes(krb5_context context,
|
|
const krb5_enctype *etypes)
|
|
{
|
|
krb5_enctype *p = NULL;
|
|
int i;
|
|
|
|
if(etypes) {
|
|
for (i = 0; etypes[i]; ++i) {
|
|
krb5_error_code ret;
|
|
ret = krb5_enctype_valid(context, etypes[i]);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
++i;
|
|
ALLOC(p, i);
|
|
if(!p) {
|
|
krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
memmove(p, etypes, i * sizeof(krb5_enctype));
|
|
}
|
|
if(context->etypes)
|
|
free(context->etypes);
|
|
context->etypes = p;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get the default encryption types that will be use in communcation
|
|
* with the KDC, clients and servers.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param etypes Encryption types, array terminated with
|
|
* ETYPE_NULL(0), caller should free array with krb5_xfree():
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_default_in_tkt_etypes(krb5_context context,
|
|
krb5_enctype **etypes)
|
|
{
|
|
krb5_enctype *p;
|
|
int i;
|
|
krb5_error_code ret;
|
|
|
|
if(context->etypes) {
|
|
for(i = 0; context->etypes[i]; i++);
|
|
++i;
|
|
ALLOC(p, i);
|
|
if(!p) {
|
|
krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
memmove(p, context->etypes, i * sizeof(krb5_enctype));
|
|
} else {
|
|
ret = default_etypes(context, &p);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
*etypes = p;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Init the built-in ets in the Kerberos library.
|
|
*
|
|
* @param context kerberos context to add the ets too
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_init_ets(krb5_context context)
|
|
{
|
|
if(context->et_list == NULL){
|
|
krb5_add_et_list(context, initialize_krb5_error_table_r);
|
|
krb5_add_et_list(context, initialize_asn1_error_table_r);
|
|
krb5_add_et_list(context, initialize_heim_error_table_r);
|
|
|
|
krb5_add_et_list(context, initialize_k524_error_table_r);
|
|
|
|
#ifdef COM_ERR_BINDDOMAIN_krb5
|
|
bindtextdomain(COM_ERR_BINDDOMAIN_krb5, HEIMDAL_LOCALEDIR);
|
|
bindtextdomain(COM_ERR_BINDDOMAIN_asn1, HEIMDAL_LOCALEDIR);
|
|
bindtextdomain(COM_ERR_BINDDOMAIN_heim, HEIMDAL_LOCALEDIR);
|
|
bindtextdomain(COM_ERR_BINDDOMAIN_k524, HEIMDAL_LOCALEDIR);
|
|
#endif
|
|
|
|
#ifdef PKINIT
|
|
krb5_add_et_list(context, initialize_hx_error_table_r);
|
|
#ifdef COM_ERR_BINDDOMAIN_hx
|
|
bindtextdomain(COM_ERR_BINDDOMAIN_hx, HEIMDAL_LOCALEDIR);
|
|
#endif
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Make the kerberos library default to the admin KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param flag boolean flag to select if the use the admin KDC or not.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
|
|
{
|
|
context->use_admin_kdc = flag;
|
|
}
|
|
|
|
/**
|
|
* Make the kerberos library default to the admin KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
*
|
|
* @return boolean flag to telling the context will use admin KDC as the default KDC.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_boolean KRB5_LIB_FUNCTION
|
|
krb5_get_use_admin_kdc (krb5_context context)
|
|
{
|
|
return context->use_admin_kdc;
|
|
}
|
|
|
|
/**
|
|
* Add extra address to the address list that the library will add to
|
|
* the client's address list when communicating with the KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses addreses to add
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
|
|
{
|
|
|
|
if(context->extra_addresses)
|
|
return krb5_append_addresses(context,
|
|
context->extra_addresses, addresses);
|
|
else
|
|
return krb5_set_extra_addresses(context, addresses);
|
|
}
|
|
|
|
/**
|
|
* Set extra address to the address list that the library will add to
|
|
* the client's address list when communicating with the KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses addreses to set
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
|
|
{
|
|
if(context->extra_addresses)
|
|
krb5_free_addresses(context, context->extra_addresses);
|
|
|
|
if(addresses == NULL) {
|
|
if(context->extra_addresses != NULL) {
|
|
free(context->extra_addresses);
|
|
context->extra_addresses = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
if(context->extra_addresses == NULL) {
|
|
context->extra_addresses = malloc(sizeof(*context->extra_addresses));
|
|
if(context->extra_addresses == NULL) {
|
|
krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
return krb5_copy_addresses(context, addresses, context->extra_addresses);
|
|
}
|
|
|
|
/**
|
|
* Get extra address to the address list that the library will add to
|
|
* the client's address list when communicating with the KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses addreses to set
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
|
|
{
|
|
if(context->extra_addresses == NULL) {
|
|
memset(addresses, 0, sizeof(*addresses));
|
|
return 0;
|
|
}
|
|
return krb5_copy_addresses(context,context->extra_addresses, addresses);
|
|
}
|
|
|
|
/**
|
|
* Add extra addresses to ignore when fetching addresses from the
|
|
* underlaying operating system.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses addreses to ignore
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
|
|
{
|
|
|
|
if(context->ignore_addresses)
|
|
return krb5_append_addresses(context,
|
|
context->ignore_addresses, addresses);
|
|
else
|
|
return krb5_set_ignore_addresses(context, addresses);
|
|
}
|
|
|
|
/**
|
|
* Set extra addresses to ignore when fetching addresses from the
|
|
* underlaying operating system.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses addreses to ignore
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
|
|
{
|
|
if(context->ignore_addresses)
|
|
krb5_free_addresses(context, context->ignore_addresses);
|
|
if(addresses == NULL) {
|
|
if(context->ignore_addresses != NULL) {
|
|
free(context->ignore_addresses);
|
|
context->ignore_addresses = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
if(context->ignore_addresses == NULL) {
|
|
context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
|
|
if(context->ignore_addresses == NULL) {
|
|
krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
return krb5_copy_addresses(context, addresses, context->ignore_addresses);
|
|
}
|
|
|
|
/**
|
|
* Get extra addresses to ignore when fetching addresses from the
|
|
* underlaying operating system.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param addresses list addreses ignored
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
|
|
{
|
|
if(context->ignore_addresses == NULL) {
|
|
memset(addresses, 0, sizeof(*addresses));
|
|
return 0;
|
|
}
|
|
return krb5_copy_addresses(context, context->ignore_addresses, addresses);
|
|
}
|
|
|
|
/**
|
|
* Set version of fcache that the library should use.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param version version number.
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_fcache_version(krb5_context context, int version)
|
|
{
|
|
context->fcache_vno = version;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get version of fcache that the library should use.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param version version number.
|
|
*
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_fcache_version(krb5_context context, int *version)
|
|
{
|
|
*version = context->fcache_vno;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Runtime check if the Kerberos library was complied with thread support.
|
|
*
|
|
* @return TRUE if the library was compiled with thread support, FALSE if not.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
|
|
krb5_boolean KRB5_LIB_FUNCTION
|
|
krb5_is_thread_safe(void)
|
|
{
|
|
#ifdef ENABLE_PTHREAD_SUPPORT
|
|
return TRUE;
|
|
#else
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Set if the library should use DNS to canonicalize hostnames.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param flag if its dns canonicalizion is used or not.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_set_dns_canonicalize_hostname (krb5_context context, krb5_boolean flag)
|
|
{
|
|
if (flag)
|
|
context->flags |= KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
|
|
else
|
|
context->flags &= ~KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
|
|
}
|
|
|
|
/**
|
|
* Get if the library uses DNS to canonicalize hostnames.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
*
|
|
* @return return non zero if the library uses DNS to canonicalize hostnames.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_boolean KRB5_LIB_FUNCTION
|
|
krb5_get_dns_canonicalize_hostname (krb5_context context)
|
|
{
|
|
return (context->flags & KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME) ? 1 : 0;
|
|
}
|
|
|
|
/**
|
|
* Get current offset in time to the KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param sec seconds part of offset.
|
|
* @param usec micro seconds part of offset.
|
|
*
|
|
* @return returns zero
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_get_kdc_sec_offset (krb5_context context, int32_t *sec, int32_t *usec)
|
|
{
|
|
if (sec)
|
|
*sec = context->kdc_sec_offset;
|
|
if (usec)
|
|
*usec = context->kdc_usec_offset;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Set current offset in time to the KDC.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param sec seconds part of offset.
|
|
* @param usec micro seconds part of offset.
|
|
*
|
|
* @return returns zero
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_set_kdc_sec_offset (krb5_context context, int32_t sec, int32_t usec)
|
|
{
|
|
context->kdc_sec_offset = sec;
|
|
if (usec >= 0)
|
|
context->kdc_usec_offset = usec;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get max time skew allowed.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
*
|
|
* @return timeskew in seconds.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
time_t KRB5_LIB_FUNCTION
|
|
krb5_get_max_time_skew (krb5_context context)
|
|
{
|
|
return context->max_skew;
|
|
}
|
|
|
|
/**
|
|
* Set max time skew allowed.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param t timeskew in seconds.
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
void KRB5_LIB_FUNCTION
|
|
krb5_set_max_time_skew (krb5_context context, time_t t)
|
|
{
|
|
context->max_skew = t;
|
|
}
|
|
|
|
/**
|
|
* Init encryption types in len, val with etypes.
|
|
*
|
|
* @param context Kerberos 5 context.
|
|
* @param len output length of val.
|
|
* @param val output array of enctypes.
|
|
* @param etypes etypes to set val and len to, if NULL, use default enctypes.
|
|
|
|
* @return Returns 0 to indicate success. Otherwise an kerberos et
|
|
* error code is returned, see krb5_get_error_message().
|
|
*
|
|
* @ingroup krb5
|
|
*/
|
|
|
|
krb5_error_code KRB5_LIB_FUNCTION
|
|
krb5_init_etype (krb5_context context,
|
|
unsigned *len,
|
|
krb5_enctype **val,
|
|
const krb5_enctype *etypes)
|
|
{
|
|
unsigned int i;
|
|
krb5_error_code ret;
|
|
krb5_enctype *tmp = NULL;
|
|
|
|
ret = 0;
|
|
if (etypes == NULL) {
|
|
ret = krb5_get_default_in_tkt_etypes(context, &tmp);
|
|
if (ret)
|
|
return ret;
|
|
etypes = tmp;
|
|
}
|
|
|
|
for (i = 0; etypes[i]; ++i)
|
|
;
|
|
*len = i;
|
|
*val = malloc(i * sizeof(**val));
|
|
if (i != 0 && *val == NULL) {
|
|
ret = ENOMEM;
|
|
krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
|
|
goto cleanup;
|
|
}
|
|
memmove (*val,
|
|
etypes,
|
|
i * sizeof(*tmp));
|
|
cleanup:
|
|
if (tmp != NULL)
|
|
free (tmp);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Allow homedir accces
|
|
*/
|
|
|
|
static HEIMDAL_MUTEX homedir_mutex = HEIMDAL_MUTEX_INITIALIZER;
|
|
static krb5_boolean allow_homedir = TRUE;
|
|
|
|
krb5_boolean
|
|
_krb5_homedir_access(krb5_context context)
|
|
{
|
|
krb5_boolean allow;
|
|
|
|
/* is never allowed for root */
|
|
if (geteuid() == 0)
|
|
return FALSE;
|
|
|
|
if (context && (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) == 0)
|
|
return FALSE;
|
|
|
|
HEIMDAL_MUTEX_lock(&homedir_mutex);
|
|
allow = allow_homedir;
|
|
HEIMDAL_MUTEX_unlock(&homedir_mutex);
|
|
return allow;
|
|
}
|
|
|
|
/**
|
|
* Enable and disable home directory access on either the global state
|
|
* or the krb5_context state. By calling krb5_set_home_dir_access()
|
|
* with context set to NULL, the global state is configured otherwise
|
|
* the state for the krb5_context is modified.
|
|
*
|
|
* For home directory access to be allowed, both the global state and
|
|
* the krb5_context state have to be allowed.
|
|
*
|
|
* Administrator (root user), never uses the home directory.
|
|
*
|
|
* @param context a Kerberos 5 context or NULL
|
|
* @param allow allow if TRUE home directory
|
|
* @return the old value
|
|
*
|
|
*/
|
|
|
|
krb5_boolean
|
|
krb5_set_home_dir_access(krb5_context context, krb5_boolean allow)
|
|
{
|
|
krb5_boolean old;
|
|
if (context) {
|
|
old = (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) ? TRUE : FALSE;
|
|
if (allow)
|
|
context->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
|
|
else
|
|
context->flags &= ~KRB5_CTX_F_HOMEDIR_ACCESS;
|
|
} else {
|
|
HEIMDAL_MUTEX_lock(&homedir_mutex);
|
|
old = allow_homedir;
|
|
allow_homedir = allow;
|
|
HEIMDAL_MUTEX_unlock(&homedir_mutex);
|
|
}
|
|
|
|
return old;
|
|
}
|