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/*
* Copyright (c) 1997 - 2001 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"
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_read_message (krb5_context context,
krb5_pointer p_fd,
krb5_data *data)
{
krb5_error_code ret;
uint32_t len;
uint8_t buf[4];
krb5_data_zero(data);
ret = krb5_net_read (context, p_fd, buf, 4);
if(ret == -1) {
ret = errno;
krb5_clear_error_message (context);
return ret;
}
if(ret < 4) {
krb5_clear_error_message(context);
return HEIM_ERR_EOF;
}
len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
ret = krb5_data_alloc (data, len);
if (ret) {
krb5_clear_error_message(context);
return ret;
}
if (krb5_net_read (context, p_fd, data->data, len) != len) {
ret = errno;
krb5_data_free (data);
krb5_clear_error_message (context);
return ret;
}
return 0;
}
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_read_priv_message(krb5_context context,
krb5_auth_context ac,
krb5_pointer p_fd,
krb5_data *data)
{
krb5_error_code ret;
krb5_data packet;
ret = krb5_read_message(context, p_fd, &packet);
if(ret)
return ret;
ret = krb5_rd_priv (context, ac, &packet, data, NULL);
krb5_data_free(&packet);
return ret;
}
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_read_safe_message(krb5_context context,
krb5_auth_context ac,
krb5_pointer p_fd,
krb5_data *data)
{
krb5_error_code ret;
krb5_data packet;
ret = krb5_read_message(context, p_fd, &packet);
if(ret)
return ret;
ret = krb5_rd_safe (context, ac, &packet, data, NULL);
krb5_data_free(&packet);
return ret;
}
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