256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/*
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* Copyright (c) 2001-2002 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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* 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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RCSID("$Id: keytab_any.c 17035 2006-04-10 09:20:13Z lha $");
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struct any_data {
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krb5_keytab kt;
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char *name;
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struct any_data *next;
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};
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static void
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free_list (krb5_context context, struct any_data *a)
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{
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struct any_data *next;
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for (; a != NULL; a = next) {
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next = a->next;
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free (a->name);
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if(a->kt)
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krb5_kt_close(context, a->kt);
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free (a);
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}
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}
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static krb5_error_code
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any_resolve(krb5_context context, const char *name, krb5_keytab id)
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{
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struct any_data *a, *a0 = NULL, *prev = NULL;
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krb5_error_code ret;
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char buf[256];
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while (strsep_copy(&name, ",", buf, sizeof(buf)) != -1) {
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a = malloc(sizeof(*a));
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if (a == NULL) {
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ret = ENOMEM;
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goto fail;
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}
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if (a0 == NULL) {
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a0 = a;
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a->name = strdup(buf);
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if (a->name == NULL) {
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krb5_set_error_string(context, "malloc: out of memory");
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ret = ENOMEM;
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goto fail;
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}
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} else
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a->name = NULL;
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if (prev != NULL)
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prev->next = a;
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a->next = NULL;
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ret = krb5_kt_resolve (context, buf, &a->kt);
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if (ret)
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goto fail;
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prev = a;
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}
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if (a0 == NULL) {
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krb5_set_error_string(context, "empty ANY: keytab");
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return ENOENT;
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}
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id->data = a0;
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return 0;
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fail:
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free_list (context, a0);
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return ret;
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}
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static krb5_error_code
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any_get_name (krb5_context context,
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krb5_keytab id,
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char *name,
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size_t namesize)
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{
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struct any_data *a = id->data;
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strlcpy(name, a->name, namesize);
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return 0;
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}
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static krb5_error_code
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any_close (krb5_context context,
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krb5_keytab id)
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{
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struct any_data *a = id->data;
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free_list (context, a);
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return 0;
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}
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struct any_cursor_extra_data {
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struct any_data *a;
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krb5_kt_cursor cursor;
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};
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static krb5_error_code
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any_start_seq_get(krb5_context context,
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krb5_keytab id,
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krb5_kt_cursor *c)
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{
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struct any_data *a = id->data;
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struct any_cursor_extra_data *ed;
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krb5_error_code ret;
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c->data = malloc (sizeof(struct any_cursor_extra_data));
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if(c->data == NULL){
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krb5_set_error_string (context, "malloc: out of memory");
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return ENOMEM;
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}
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ed = (struct any_cursor_extra_data *)c->data;
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ed->a = a;
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ret = krb5_kt_start_seq_get(context, ed->a->kt, &ed->cursor);
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if (ret) {
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free (c->data);
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c->data = NULL;
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return ret;
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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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any_next_entry (krb5_context context,
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krb5_keytab id,
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krb5_keytab_entry *entry,
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krb5_kt_cursor *cursor)
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{
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krb5_error_code ret, ret2;
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struct any_cursor_extra_data *ed;
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ed = (struct any_cursor_extra_data *)cursor->data;
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do {
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ret = krb5_kt_next_entry(context, ed->a->kt, entry, &ed->cursor);
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if (ret == 0)
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return 0;
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else if (ret != KRB5_KT_END)
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return ret;
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ret2 = krb5_kt_end_seq_get (context, ed->a->kt, &ed->cursor);
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if (ret2)
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return ret2;
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while ((ed->a = ed->a->next) != NULL) {
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ret2 = krb5_kt_start_seq_get(context, ed->a->kt, &ed->cursor);
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if (ret2 == 0)
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break;
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}
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if (ed->a == NULL) {
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krb5_clear_error_string (context);
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return KRB5_KT_END;
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}
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} while (1);
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}
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static krb5_error_code
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any_end_seq_get(krb5_context context,
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krb5_keytab id,
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krb5_kt_cursor *cursor)
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{
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krb5_error_code ret = 0;
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struct any_cursor_extra_data *ed;
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ed = (struct any_cursor_extra_data *)cursor->data;
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if (ed->a != NULL)
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ret = krb5_kt_end_seq_get(context, ed->a->kt, &ed->cursor);
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free (ed);
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cursor->data = NULL;
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return ret;
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}
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static krb5_error_code
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any_add_entry(krb5_context context,
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krb5_keytab id,
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krb5_keytab_entry *entry)
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{
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struct any_data *a = id->data;
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krb5_error_code ret;
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while(a != NULL) {
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ret = krb5_kt_add_entry(context, a->kt, entry);
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if(ret != 0 && ret != KRB5_KT_NOWRITE) {
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krb5_set_error_string(context, "failed to add entry to %s",
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a->name);
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return ret;
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}
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a = a->next;
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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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any_remove_entry(krb5_context context,
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krb5_keytab id,
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krb5_keytab_entry *entry)
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{
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struct any_data *a = id->data;
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krb5_error_code ret;
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int found = 0;
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while(a != NULL) {
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ret = krb5_kt_remove_entry(context, a->kt, entry);
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if(ret == 0)
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found++;
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else {
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if(ret != KRB5_KT_NOWRITE && ret != KRB5_KT_NOTFOUND) {
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krb5_set_error_string(context, "failed to remove entry from %s",
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a->name);
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return ret;
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}
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}
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a = a->next;
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}
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if(!found)
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return KRB5_KT_NOTFOUND;
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return 0;
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}
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const krb5_kt_ops krb5_any_ops = {
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"ANY",
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any_resolve,
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any_get_name,
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any_close,
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NULL, /* get */
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any_start_seq_get,
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any_next_entry,
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any_end_seq_get,
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any_add_entry,
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any_remove_entry
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};
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