665 lines
15 KiB
C
665 lines
15 KiB
C
/*
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* Copyright (c) 1997-2001 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: store.c,v 1.35 2001/05/11 13:01:43 joda Exp $");
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#define BYTEORDER_IS(SP, V) (((SP)->flags & KRB5_STORAGE_BYTEORDER_MASK) == (V))
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#define BYTEORDER_IS_LE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_LE)
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#define BYTEORDER_IS_BE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_BE)
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#define BYTEORDER_IS_HOST(SP) (BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_HOST) || \
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krb5_storage_is_flags((SP), KRB5_STORAGE_HOST_BYTEORDER))
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void
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krb5_storage_set_flags(krb5_storage *sp, krb5_flags flags)
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{
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sp->flags |= flags;
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}
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void
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krb5_storage_clear_flags(krb5_storage *sp, krb5_flags flags)
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{
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sp->flags &= ~flags;
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}
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krb5_boolean
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krb5_storage_is_flags(krb5_storage *sp, krb5_flags flags)
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{
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return (sp->flags & flags) == flags;
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}
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void
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krb5_storage_set_byteorder(krb5_storage *sp, krb5_flags byteorder)
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{
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sp->flags &= ~KRB5_STORAGE_BYTEORDER_MASK;
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sp->flags |= byteorder;
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}
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krb5_flags
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krb5_storage_get_byteorder(krb5_storage *sp, krb5_flags byteorder)
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{
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return sp->flags & KRB5_STORAGE_BYTEORDER_MASK;
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}
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ssize_t
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_krb5_put_int(void *buffer, unsigned long value, size_t size)
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{
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unsigned char *p = buffer;
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int i;
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for (i = size - 1; i >= 0; i--) {
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p[i] = value & 0xff;
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value >>= 8;
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}
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return size;
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}
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ssize_t
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_krb5_get_int(void *buffer, unsigned long *value, size_t size)
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{
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unsigned char *p = buffer;
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unsigned long v = 0;
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int i;
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for (i = 0; i < size; i++)
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v = (v << 8) + p[i];
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*value = v;
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return size;
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}
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krb5_error_code
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krb5_storage_free(krb5_storage *sp)
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{
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if(sp->free)
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(*sp->free)(sp);
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free(sp->data);
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free(sp);
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return 0;
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}
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krb5_error_code
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krb5_storage_to_data(krb5_storage *sp, krb5_data *data)
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{
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off_t pos;
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size_t size;
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krb5_error_code ret;
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pos = sp->seek(sp, 0, SEEK_CUR);
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size = (size_t)sp->seek(sp, 0, SEEK_END);
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ret = krb5_data_alloc (data, size);
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if (ret) {
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sp->seek(sp, pos, SEEK_SET);
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return ret;
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}
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if (size) {
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sp->seek(sp, 0, SEEK_SET);
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sp->fetch(sp, data->data, data->length);
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sp->seek(sp, pos, SEEK_SET);
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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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krb5_store_int(krb5_storage *sp,
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int32_t value,
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size_t len)
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{
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int ret;
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unsigned char v[16];
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if(len > sizeof(v))
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return EINVAL;
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_krb5_put_int(v, value, len);
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ret = sp->store(sp, v, len);
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if (ret != len)
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return (ret<0)?errno:KRB5_CC_END;
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return 0;
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}
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krb5_error_code
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krb5_store_int32(krb5_storage *sp,
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int32_t value)
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{
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if(BYTEORDER_IS_HOST(sp))
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value = htonl(value);
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else if(BYTEORDER_IS_LE(sp))
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value = bswap32(value);
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return krb5_store_int(sp, value, 4);
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}
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static krb5_error_code
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krb5_ret_int(krb5_storage *sp,
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int32_t *value,
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size_t len)
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{
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int ret;
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unsigned char v[4];
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unsigned long w;
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ret = sp->fetch(sp, v, len);
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if(ret != len)
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return (ret<0)?errno:KRB5_CC_END;
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_krb5_get_int(v, &w, len);
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*value = w;
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return 0;
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}
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krb5_error_code
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krb5_ret_int32(krb5_storage *sp,
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int32_t *value)
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{
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krb5_error_code ret = krb5_ret_int(sp, value, 4);
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if(ret)
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return ret;
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if(BYTEORDER_IS_HOST(sp))
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*value = htonl(*value);
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else if(BYTEORDER_IS_LE(sp))
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*value = bswap32(*value);
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return 0;
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}
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krb5_error_code
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krb5_store_int16(krb5_storage *sp,
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int16_t value)
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{
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if(BYTEORDER_IS_HOST(sp))
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value = htons(value);
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else if(BYTEORDER_IS_LE(sp))
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value = bswap16(value);
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return krb5_store_int(sp, value, 2);
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}
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krb5_error_code
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krb5_ret_int16(krb5_storage *sp,
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int16_t *value)
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{
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int32_t v;
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int ret;
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ret = krb5_ret_int(sp, &v, 2);
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if(ret)
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return ret;
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*value = v;
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if(BYTEORDER_IS_HOST(sp))
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*value = htons(*value);
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else if(BYTEORDER_IS_LE(sp))
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*value = bswap16(*value);
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return 0;
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}
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krb5_error_code
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krb5_store_int8(krb5_storage *sp,
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int8_t value)
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{
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int ret;
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ret = sp->store(sp, &value, sizeof(value));
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if (ret != sizeof(value))
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return (ret<0)?errno:KRB5_CC_END;
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return 0;
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}
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krb5_error_code
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krb5_ret_int8(krb5_storage *sp,
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int8_t *value)
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{
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int ret;
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ret = sp->fetch(sp, value, sizeof(*value));
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if (ret != sizeof(*value))
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return (ret<0)?errno:KRB5_CC_END;
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return 0;
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}
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krb5_error_code
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krb5_store_data(krb5_storage *sp,
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krb5_data data)
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{
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int ret;
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ret = krb5_store_int32(sp, data.length);
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if(ret < 0)
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return ret;
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ret = sp->store(sp, data.data, data.length);
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if(ret != data.length){
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if(ret < 0)
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return errno;
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return KRB5_CC_END;
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}
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return 0;
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}
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krb5_error_code
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krb5_ret_data(krb5_storage *sp,
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krb5_data *data)
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{
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int ret;
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int32_t size;
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ret = krb5_ret_int32(sp, &size);
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if(ret)
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return ret;
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ret = krb5_data_alloc (data, size);
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if (ret)
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return ret;
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if (size) {
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ret = sp->fetch(sp, data->data, size);
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if(ret != size)
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return (ret < 0)? errno : KRB5_CC_END;
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}
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return 0;
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}
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krb5_error_code
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krb5_store_string(krb5_storage *sp, const char *s)
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{
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krb5_data data;
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data.length = strlen(s);
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data.data = (void*)s;
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return krb5_store_data(sp, data);
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}
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krb5_error_code
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krb5_ret_string(krb5_storage *sp,
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char **string)
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{
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int ret;
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krb5_data data;
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ret = krb5_ret_data(sp, &data);
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if(ret)
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return ret;
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*string = realloc(data.data, data.length + 1);
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if(*string == NULL){
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free(data.data);
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return ENOMEM;
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}
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(*string)[data.length] = 0;
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return 0;
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}
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krb5_error_code
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krb5_store_stringz(krb5_storage *sp, const char *s)
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{
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size_t len = strlen(s) + 1;
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ssize_t ret;
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ret = sp->store(sp, s, len);
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if(ret != len) {
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if(ret < 0)
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return ret;
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else
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return KRB5_CC_END;
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}
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return 0;
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}
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krb5_error_code
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krb5_ret_stringz(krb5_storage *sp,
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char **string)
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{
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char c;
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char *s = NULL;
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size_t len = 0;
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ssize_t ret;
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while((ret = sp->fetch(sp, &c, 1)) == 1){
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char *tmp;
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len++;
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tmp = realloc (s, len);
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if (tmp == NULL) {
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free (s);
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return ENOMEM;
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}
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s = tmp;
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s[len - 1] = c;
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if(c == 0)
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break;
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}
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if(ret != 1){
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free(s);
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if(ret == 0)
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return KRB5_CC_END;
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return ret;
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}
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*string = s;
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return 0;
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}
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krb5_error_code
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krb5_store_principal(krb5_storage *sp,
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krb5_principal p)
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{
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int i;
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int ret;
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if(!krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE)) {
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ret = krb5_store_int32(sp, p->name.name_type);
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if(ret) return ret;
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}
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if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS))
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ret = krb5_store_int32(sp, p->name.name_string.len + 1);
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else
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ret = krb5_store_int32(sp, p->name.name_string.len);
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if(ret) return ret;
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ret = krb5_store_string(sp, p->realm);
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if(ret) return ret;
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for(i = 0; i < p->name.name_string.len; i++){
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ret = krb5_store_string(sp, p->name.name_string.val[i]);
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if(ret) return ret;
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}
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return 0;
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}
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krb5_error_code
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krb5_ret_principal(krb5_storage *sp,
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krb5_principal *princ)
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{
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int i;
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int ret;
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krb5_principal p;
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int32_t type;
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int32_t ncomp;
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p = calloc(1, sizeof(*p));
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if(p == NULL)
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return ENOMEM;
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if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE))
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type = KRB5_NT_UNKNOWN;
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else if((ret = krb5_ret_int32(sp, &type))){
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free(p);
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return ret;
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}
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if((ret = krb5_ret_int32(sp, &ncomp))){
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free(p);
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return ret;
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}
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if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS))
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ncomp--;
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p->name.name_type = type;
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p->name.name_string.len = ncomp;
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ret = krb5_ret_string(sp, &p->realm);
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if(ret) return ret;
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p->name.name_string.val = calloc(ncomp, sizeof(*p->name.name_string.val));
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if(p->name.name_string.val == NULL){
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free(p->realm);
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return ENOMEM;
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}
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for(i = 0; i < ncomp; i++){
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ret = krb5_ret_string(sp, &p->name.name_string.val[i]);
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if(ret) return ret; /* XXX */
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}
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*princ = p;
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return 0;
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}
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krb5_error_code
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krb5_store_keyblock(krb5_storage *sp, krb5_keyblock p)
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{
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int ret;
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ret = krb5_store_int16(sp, p.keytype);
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if(ret) return ret;
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if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){
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/* this should really be enctype, but it is the same as
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keytype nowadays */
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ret = krb5_store_int16(sp, p.keytype);
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if(ret) return ret;
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}
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ret = krb5_store_data(sp, p.keyvalue);
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return ret;
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}
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krb5_error_code
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krb5_ret_keyblock(krb5_storage *sp, krb5_keyblock *p)
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{
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int ret;
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int16_t tmp;
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ret = krb5_ret_int16(sp, &tmp);
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if(ret) return ret;
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p->keytype = tmp;
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if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){
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ret = krb5_ret_int16(sp, &tmp);
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if(ret) return ret;
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}
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ret = krb5_ret_data(sp, &p->keyvalue);
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return ret;
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}
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krb5_error_code
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krb5_store_times(krb5_storage *sp, krb5_times times)
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{
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int ret;
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ret = krb5_store_int32(sp, times.authtime);
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if(ret) return ret;
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ret = krb5_store_int32(sp, times.starttime);
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if(ret) return ret;
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ret = krb5_store_int32(sp, times.endtime);
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if(ret) return ret;
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ret = krb5_store_int32(sp, times.renew_till);
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return ret;
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}
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krb5_error_code
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krb5_ret_times(krb5_storage *sp, krb5_times *times)
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{
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int ret;
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int32_t tmp;
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ret = krb5_ret_int32(sp, &tmp);
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times->authtime = tmp;
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if(ret) return ret;
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ret = krb5_ret_int32(sp, &tmp);
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times->starttime = tmp;
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if(ret) return ret;
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ret = krb5_ret_int32(sp, &tmp);
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times->endtime = tmp;
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if(ret) return ret;
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ret = krb5_ret_int32(sp, &tmp);
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times->renew_till = tmp;
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return ret;
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}
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krb5_error_code
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krb5_store_address(krb5_storage *sp, krb5_address p)
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{
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int ret;
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ret = krb5_store_int16(sp, p.addr_type);
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if(ret) return ret;
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ret = krb5_store_data(sp, p.address);
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return ret;
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}
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krb5_error_code
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krb5_ret_address(krb5_storage *sp, krb5_address *adr)
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{
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int16_t t;
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int ret;
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ret = krb5_ret_int16(sp, &t);
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if(ret) return ret;
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adr->addr_type = t;
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ret = krb5_ret_data(sp, &adr->address);
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return ret;
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}
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krb5_error_code
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krb5_store_addrs(krb5_storage *sp, krb5_addresses p)
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{
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int i;
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int ret;
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ret = krb5_store_int32(sp, p.len);
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if(ret) return ret;
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for(i = 0; i<p.len; i++){
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ret = krb5_store_address(sp, p.val[i]);
|
|
if(ret) break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_ret_addrs(krb5_storage *sp, krb5_addresses *adr)
|
|
{
|
|
int i;
|
|
int ret;
|
|
int32_t tmp;
|
|
|
|
ret = krb5_ret_int32(sp, &tmp);
|
|
if(ret) return ret;
|
|
adr->len = tmp;
|
|
ALLOC(adr->val, adr->len);
|
|
for(i = 0; i < adr->len; i++){
|
|
ret = krb5_ret_address(sp, &adr->val[i]);
|
|
if(ret) break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_store_authdata(krb5_storage *sp, krb5_authdata auth)
|
|
{
|
|
krb5_error_code ret;
|
|
int i;
|
|
ret = krb5_store_int32(sp, auth.len);
|
|
if(ret) return ret;
|
|
for(i = 0; i < auth.len; i++){
|
|
ret = krb5_store_int16(sp, auth.val[i].ad_type);
|
|
if(ret) break;
|
|
ret = krb5_store_data(sp, auth.val[i].ad_data);
|
|
if(ret) break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_ret_authdata(krb5_storage *sp, krb5_authdata *auth)
|
|
{
|
|
krb5_error_code ret;
|
|
int32_t tmp;
|
|
int16_t tmp2;
|
|
int i;
|
|
ret = krb5_ret_int32(sp, &tmp);
|
|
if(ret) return ret;
|
|
ALLOC_SEQ(auth, tmp);
|
|
for(i = 0; i < tmp; i++){
|
|
ret = krb5_ret_int16(sp, &tmp2);
|
|
if(ret) break;
|
|
auth->val[i].ad_type = tmp2;
|
|
ret = krb5_ret_data(sp, &auth->val[i].ad_data);
|
|
if(ret) break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* store `creds' on `sp' returning error or zero
|
|
*/
|
|
|
|
krb5_error_code
|
|
krb5_store_creds(krb5_storage *sp, krb5_creds *creds)
|
|
{
|
|
int ret;
|
|
|
|
ret = krb5_store_principal(sp, creds->client);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_principal(sp, creds->server);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_keyblock(sp, creds->session);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_times(sp, creds->times);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_int8(sp, 0); /* this is probably the
|
|
enc-tkt-in-skey bit from KDCOptions */
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_int32(sp, creds->flags.i);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_addrs(sp, creds->addresses);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_authdata(sp, creds->authdata);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_data(sp, creds->ticket);
|
|
if (ret)
|
|
return ret;
|
|
ret = krb5_store_data(sp, creds->second_ticket);
|
|
if (ret)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
krb5_error_code
|
|
krb5_ret_creds(krb5_storage *sp, krb5_creds *creds)
|
|
{
|
|
krb5_error_code ret;
|
|
int8_t dummy8;
|
|
int32_t dummy32;
|
|
|
|
memset(creds, 0, sizeof(*creds));
|
|
ret = krb5_ret_principal (sp, &creds->client);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_principal (sp, &creds->server);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_keyblock (sp, &creds->session);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_times (sp, &creds->times);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_int8 (sp, &dummy8);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_int32 (sp, &dummy32);
|
|
if(ret) goto cleanup;
|
|
creds->flags.i = dummy32;
|
|
ret = krb5_ret_addrs (sp, &creds->addresses);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_authdata (sp, &creds->authdata);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_data (sp, &creds->ticket);
|
|
if(ret) goto cleanup;
|
|
ret = krb5_ret_data (sp, &creds->second_ticket);
|
|
cleanup:
|
|
if(ret)
|
|
#if 0
|
|
krb5_free_creds_contents(context, creds) /* XXX */
|
|
#endif
|
|
;
|
|
return ret;
|
|
}
|