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/*
* Copyright (c) 2001-2002 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"
RCSID("$Id: keytab_any.c 23316 2008-06-23 04:32:32Z lha $");
struct any_data {
krb5_keytab kt;
char *name;
struct any_data *next;
};
static void
free_list (krb5_context context, struct any_data *a)
{
struct any_data *next;
for (; a != NULL; a = next) {
next = a->next;
free (a->name);
if(a->kt)
krb5_kt_close(context, a->kt);
free (a);
}
}
static krb5_error_code
any_resolve(krb5_context context, const char *name, krb5_keytab id)
{
struct any_data *a, *a0 = NULL, *prev = NULL;
krb5_error_code ret;
char buf[256];
while (strsep_copy(&name, ",", buf, sizeof(buf)) != -1) {
a = malloc(sizeof(*a));
if (a == NULL) {
ret = ENOMEM;
goto fail;
}
if (a0 == NULL) {
a0 = a;
a->name = strdup(buf);
if (a->name == NULL) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
goto fail;
}
} else
a->name = NULL;
if (prev != NULL)
prev->next = a;
a->next = NULL;
ret = krb5_kt_resolve (context, buf, &a->kt);
if (ret)
goto fail;
prev = a;
}
if (a0 == NULL) {
krb5_set_error_message(context, ENOENT, "empty ANY: keytab");
return ENOENT;
}
id->data = a0;
return 0;
fail:
free_list (context, a0);
return ret;
}
static krb5_error_code
any_get_name (krb5_context context,
krb5_keytab id,
char *name,
size_t namesize)
{
struct any_data *a = id->data;
strlcpy(name, a->name, namesize);
return 0;
}
static krb5_error_code
any_close (krb5_context context,
krb5_keytab id)
{
struct any_data *a = id->data;
free_list (context, a);
return 0;
}
struct any_cursor_extra_data {
struct any_data *a;
krb5_kt_cursor cursor;
};
static krb5_error_code
any_start_seq_get(krb5_context context,
krb5_keytab id,
krb5_kt_cursor *c)
{
struct any_data *a = id->data;
struct any_cursor_extra_data *ed;
krb5_error_code ret;
c->data = malloc (sizeof(struct any_cursor_extra_data));
if(c->data == NULL){
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
return ENOMEM;
}
ed = (struct any_cursor_extra_data *)c->data;
ed->a = a;
ret = krb5_kt_start_seq_get(context, ed->a->kt, &ed->cursor);
if (ret) {
free (c->data);
c->data = NULL;
return ret;
}
return 0;
}
static krb5_error_code
any_next_entry (krb5_context context,
krb5_keytab id,
krb5_keytab_entry *entry,
krb5_kt_cursor *cursor)
{
krb5_error_code ret, ret2;
struct any_cursor_extra_data *ed;
ed = (struct any_cursor_extra_data *)cursor->data;
do {
ret = krb5_kt_next_entry(context, ed->a->kt, entry, &ed->cursor);
if (ret == 0)
return 0;
else if (ret != KRB5_KT_END)
return ret;
ret2 = krb5_kt_end_seq_get (context, ed->a->kt, &ed->cursor);
if (ret2)
return ret2;
while ((ed->a = ed->a->next) != NULL) {
ret2 = krb5_kt_start_seq_get(context, ed->a->kt, &ed->cursor);
if (ret2 == 0)
break;
}
if (ed->a == NULL) {
krb5_clear_error_string (context);
return KRB5_KT_END;
}
} while (1);
}
static krb5_error_code
any_end_seq_get(krb5_context context,
krb5_keytab id,
krb5_kt_cursor *cursor)
{
krb5_error_code ret = 0;
struct any_cursor_extra_data *ed;
ed = (struct any_cursor_extra_data *)cursor->data;
if (ed->a != NULL)
ret = krb5_kt_end_seq_get(context, ed->a->kt, &ed->cursor);
free (ed);
cursor->data = NULL;
return ret;
}
static krb5_error_code
any_add_entry(krb5_context context,
krb5_keytab id,
krb5_keytab_entry *entry)
{
struct any_data *a = id->data;
krb5_error_code ret;
while(a != NULL) {
ret = krb5_kt_add_entry(context, a->kt, entry);
if(ret != 0 && ret != KRB5_KT_NOWRITE) {
krb5_set_error_message(context, ret, "failed to add entry to %s",
a->name);
return ret;
}
a = a->next;
}
return 0;
}
static krb5_error_code
any_remove_entry(krb5_context context,
krb5_keytab id,
krb5_keytab_entry *entry)
{
struct any_data *a = id->data;
krb5_error_code ret;
int found = 0;
while(a != NULL) {
ret = krb5_kt_remove_entry(context, a->kt, entry);
if(ret == 0)
found++;
else {
if(ret != KRB5_KT_NOWRITE && ret != KRB5_KT_NOTFOUND) {
krb5_set_error_message(context, ret,
"Failed to remove keytab entry from %s",
a->name);
return ret;
}
}
a = a->next;
}
if(!found)
return KRB5_KT_NOTFOUND;
return 0;
}
const krb5_kt_ops krb5_any_ops = {
"ANY",
any_resolve,
any_get_name,
any_close,
NULL, /* get */
any_start_seq_get,
any_next_entry,
any_end_seq_get,
any_add_entry,
any_remove_entry
};
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