mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-24 09:13:17 +00:00
541 lines
14 KiB
C
541 lines
14 KiB
C
/*
|
|
* Copyright (c) 1997 - 2002 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 "krb5_locl.h"
|
|
#include <com_err.h>
|
|
|
|
RCSID("$Id: context.c,v 1.81 2002/09/02 17:03:12 joda Exp $");
|
|
|
|
#define INIT_FIELD(C, T, E, D, F) \
|
|
(C)->E = krb5_config_get_ ## T ## _default ((C), NULL, (D), \
|
|
"libdefaults", F, NULL)
|
|
|
|
/*
|
|
* Set the list of etypes `ret_etypes' from the configuration variable
|
|
* `name'
|
|
*/
|
|
|
|
static krb5_error_code
|
|
set_etypes (krb5_context context,
|
|
const char *name,
|
|
krb5_enctype **ret_enctypes)
|
|
{
|
|
char **etypes_str;
|
|
krb5_enctype *etypes = NULL;
|
|
|
|
etypes_str = krb5_config_get_strings(context, NULL, "libdefaults",
|
|
name, NULL);
|
|
if(etypes_str){
|
|
int i, j, k;
|
|
for(i = 0; etypes_str[i]; i++);
|
|
etypes = malloc((i+1) * sizeof(*etypes));
|
|
if (etypes == NULL) {
|
|
krb5_config_free_strings (etypes_str);
|
|
krb5_set_error_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
for(j = 0, k = 0; j < i; j++) {
|
|
if(krb5_string_to_enctype(context, etypes_str[j], &etypes[k]) == 0)
|
|
k++;
|
|
}
|
|
etypes[k] = ETYPE_NULL;
|
|
krb5_config_free_strings(etypes_str);
|
|
}
|
|
*ret_enctypes = etypes;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* read variables from the configuration file and set in `context'
|
|
*/
|
|
|
|
static krb5_error_code
|
|
init_context_from_config_file(krb5_context context)
|
|
{
|
|
krb5_error_code ret;
|
|
const char * tmp;
|
|
krb5_enctype *tmptypes;
|
|
|
|
INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
|
|
INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
|
|
INIT_FIELD(context, int, max_retries, 3, "max_retries");
|
|
|
|
INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
|
|
|
|
ret = set_etypes (context, "default_etypes", &tmptypes);
|
|
if(ret)
|
|
return ret;
|
|
free(context->etypes);
|
|
context->etypes = tmptypes;
|
|
|
|
ret = set_etypes (context, "default_etypes_des", &tmptypes);
|
|
if(ret)
|
|
return ret;
|
|
free(context->etypes_des);
|
|
context->etypes_des = tmptypes;
|
|
|
|
/* default keytab name */
|
|
tmp = NULL;
|
|
if(!issuid())
|
|
tmp = getenv("KRB5_KTNAME");
|
|
if(tmp != NULL)
|
|
context->default_keytab = tmp;
|
|
else
|
|
INIT_FIELD(context, string, default_keytab,
|
|
KEYTAB_DEFAULT, "default_keytab_name");
|
|
|
|
INIT_FIELD(context, string, default_keytab_modify,
|
|
NULL, "default_keytab_modify_name");
|
|
|
|
INIT_FIELD(context, string, time_fmt,
|
|
"%Y-%m-%dT%H:%M:%S", "time_format");
|
|
|
|
INIT_FIELD(context, string, date_fmt,
|
|
"%Y-%m-%d", "date_format");
|
|
|
|
INIT_FIELD(context, bool, log_utc,
|
|
FALSE, "log_utc");
|
|
|
|
|
|
|
|
/* init dns-proxy slime */
|
|
tmp = krb5_config_get_string(context, NULL, "libdefaults",
|
|
"dns_proxy", NULL);
|
|
if(tmp)
|
|
roken_gethostby_setup(context->http_proxy, tmp);
|
|
krb5_free_host_realm (context, context->default_realms);
|
|
context->default_realms = NULL;
|
|
|
|
{
|
|
krb5_addresses addresses;
|
|
char **adr, **a;
|
|
|
|
krb5_set_extra_addresses(context, NULL);
|
|
adr = krb5_config_get_strings(context, NULL,
|
|
"libdefaults",
|
|
"extra_addresses",
|
|
NULL);
|
|
memset(&addresses, 0, sizeof(addresses));
|
|
for(a = adr; a && *a; a++) {
|
|
ret = krb5_parse_address(context, *a, &addresses);
|
|
if (ret == 0) {
|
|
krb5_add_extra_addresses(context, &addresses);
|
|
krb5_free_addresses(context, &addresses);
|
|
}
|
|
}
|
|
krb5_config_free_strings(adr);
|
|
|
|
krb5_set_ignore_addresses(context, NULL);
|
|
adr = krb5_config_get_strings(context, NULL,
|
|
"libdefaults",
|
|
"ignore_addresses",
|
|
NULL);
|
|
memset(&addresses, 0, sizeof(addresses));
|
|
for(a = adr; a && *a; a++) {
|
|
ret = krb5_parse_address(context, *a, &addresses);
|
|
if (ret == 0) {
|
|
krb5_add_ignore_addresses(context, &addresses);
|
|
krb5_free_addresses(context, &addresses);
|
|
}
|
|
}
|
|
krb5_config_free_strings(adr);
|
|
}
|
|
|
|
INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
|
|
INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
|
|
/* prefer dns_lookup_kdc over srv_lookup. */
|
|
INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
|
|
INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_init_context(krb5_context *context)
|
|
{
|
|
krb5_context p;
|
|
krb5_error_code ret;
|
|
char **files;
|
|
|
|
p = calloc(1, sizeof(*p));
|
|
if(!p)
|
|
return ENOMEM;
|
|
|
|
ret = krb5_get_default_config_files(&files);
|
|
if(ret)
|
|
goto out;
|
|
ret = krb5_set_config_files(p, files);
|
|
krb5_free_config_files(files);
|
|
if(ret)
|
|
goto out;
|
|
|
|
/* init error tables */
|
|
krb5_init_ets(p);
|
|
|
|
p->cc_ops = NULL;
|
|
p->num_cc_ops = 0;
|
|
krb5_cc_register(p, &krb5_fcc_ops, TRUE);
|
|
krb5_cc_register(p, &krb5_mcc_ops, TRUE);
|
|
|
|
p->num_kt_types = 0;
|
|
p->kt_types = NULL;
|
|
krb5_kt_register (p, &krb5_fkt_ops);
|
|
krb5_kt_register (p, &krb5_mkt_ops);
|
|
krb5_kt_register (p, &krb5_akf_ops);
|
|
krb5_kt_register (p, &krb4_fkt_ops);
|
|
krb5_kt_register (p, &krb5_srvtab_fkt_ops);
|
|
krb5_kt_register (p, &krb5_any_ops);
|
|
|
|
out:
|
|
if(ret) {
|
|
krb5_free_context(p);
|
|
p = NULL;
|
|
}
|
|
*context = p;
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
krb5_free_context(krb5_context context)
|
|
{
|
|
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_string(context);
|
|
if(context->warn_dest != NULL)
|
|
krb5_closelog(context, context->warn_dest);
|
|
krb5_set_extra_addresses(context, NULL);
|
|
krb5_set_ignore_addresses(context, NULL);
|
|
free(context);
|
|
}
|
|
|
|
krb5_error_code
|
|
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) {
|
|
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 ENOENT;
|
|
#endif
|
|
krb5_config_file_free(context, context->cf);
|
|
context->cf = tmp;
|
|
ret = init_context_from_config_file(context);
|
|
return ret;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_get_default_config_files(char ***pfilenames)
|
|
{
|
|
const char *p, *q;
|
|
char **pp;
|
|
int n, i;
|
|
|
|
const char *files = NULL;
|
|
if (pfilenames == NULL)
|
|
return EINVAL;
|
|
if(!issuid())
|
|
files = getenv("KRB5_CONFIG");
|
|
if (files == NULL)
|
|
files = krb5_config_file;
|
|
|
|
for(n = 0, p = files; strsep_copy(&p, ":", NULL, 0) != -1; n++);
|
|
pp = malloc((n + 1) * sizeof(*pp));
|
|
if(pp == NULL)
|
|
return ENOMEM;
|
|
|
|
n = 0;
|
|
p = files;
|
|
while(1) {
|
|
ssize_t l;
|
|
q = p;
|
|
l = strsep_copy(&q, ":", NULL, 0);
|
|
if(l == -1)
|
|
break;
|
|
pp[n] = malloc(l + 1);
|
|
if(pp[n] == NULL) {
|
|
krb5_free_config_files(pp);
|
|
return ENOMEM;
|
|
}
|
|
l = strsep_copy(&p, ":", pp[n], l + 1);
|
|
for(i = 0; i < n; i++)
|
|
if(strcmp(pp[i], pp[n]) == 0) {
|
|
free(pp[n]);
|
|
goto skip;
|
|
}
|
|
n++;
|
|
skip:;
|
|
}
|
|
pp[n] = NULL;
|
|
*pfilenames = pp;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
krb5_free_config_files(char **filenames)
|
|
{
|
|
char **p;
|
|
for(p = filenames; *p != NULL; p++)
|
|
free(*p);
|
|
free(filenames);
|
|
}
|
|
|
|
/*
|
|
* set `etype' to a malloced list of the default enctypes
|
|
*/
|
|
|
|
static krb5_error_code
|
|
default_etypes(krb5_context context, krb5_enctype **etype)
|
|
{
|
|
krb5_enctype p[] = {
|
|
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
|
|
};
|
|
|
|
*etype = malloc(sizeof(p));
|
|
if(*etype == NULL) {
|
|
krb5_set_error_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
memcpy(*etype, p, sizeof(p));
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_set_default_in_tkt_etypes(krb5_context context,
|
|
const krb5_enctype *etypes)
|
|
{
|
|
int i;
|
|
krb5_enctype *p = NULL;
|
|
|
|
if(etypes) {
|
|
for (i = 0; etypes[i]; ++i)
|
|
if(!krb5_enctype_valid(context, etypes[i])) {
|
|
krb5_set_error_string(context, "enctype %d not supported",
|
|
etypes[i]);
|
|
return KRB5_PROG_ETYPE_NOSUPP;
|
|
}
|
|
++i;
|
|
ALLOC(p, i);
|
|
if(!p) {
|
|
krb5_set_error_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
memmove(p, etypes, i * sizeof(krb5_enctype));
|
|
}
|
|
if(context->etypes)
|
|
free(context->etypes);
|
|
context->etypes = p;
|
|
return 0;
|
|
}
|
|
|
|
|
|
krb5_error_code
|
|
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_string (context, "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;
|
|
}
|
|
|
|
const char *
|
|
krb5_get_err_text(krb5_context context, krb5_error_code code)
|
|
{
|
|
const char *p = NULL;
|
|
if(context != NULL)
|
|
p = com_right(context->et_list, code);
|
|
if(p == NULL)
|
|
p = strerror(code);
|
|
return p;
|
|
}
|
|
|
|
void
|
|
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);
|
|
}
|
|
}
|
|
|
|
void
|
|
krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
|
|
{
|
|
context->use_admin_kdc = flag;
|
|
}
|
|
|
|
krb5_boolean
|
|
krb5_get_use_admin_kdc (krb5_context context)
|
|
{
|
|
return context->use_admin_kdc;
|
|
}
|
|
|
|
krb5_error_code
|
|
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);
|
|
}
|
|
|
|
krb5_error_code
|
|
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_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
return krb5_copy_addresses(context, addresses, context->extra_addresses);
|
|
}
|
|
|
|
krb5_error_code
|
|
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);
|
|
}
|
|
|
|
krb5_error_code
|
|
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);
|
|
}
|
|
|
|
krb5_error_code
|
|
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_string (context, "malloc: out of memory");
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
return krb5_copy_addresses(context, addresses, context->ignore_addresses);
|
|
}
|
|
|
|
krb5_error_code
|
|
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);
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_set_fcache_version(krb5_context context, int version)
|
|
{
|
|
context->fcache_vno = version;
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_get_fcache_version(krb5_context context, int *version)
|
|
{
|
|
*version = context->fcache_vno;
|
|
return 0;
|
|
}
|