1*ebfedea0SLionel Sambuc /* $NetBSD: read_message.c,v 1.1.1.1 2011/04/13 18:15:37 elric Exp $ */
2*ebfedea0SLionel Sambuc
3*ebfedea0SLionel Sambuc /*
4*ebfedea0SLionel Sambuc * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
5*ebfedea0SLionel Sambuc * (Royal Institute of Technology, Stockholm, Sweden).
6*ebfedea0SLionel Sambuc * All rights reserved.
7*ebfedea0SLionel Sambuc *
8*ebfedea0SLionel Sambuc * Redistribution and use in source and binary forms, with or without
9*ebfedea0SLionel Sambuc * modification, are permitted provided that the following conditions
10*ebfedea0SLionel Sambuc * are met:
11*ebfedea0SLionel Sambuc *
12*ebfedea0SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
13*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer.
14*ebfedea0SLionel Sambuc *
15*ebfedea0SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17*ebfedea0SLionel Sambuc * documentation and/or other materials provided with the distribution.
18*ebfedea0SLionel Sambuc *
19*ebfedea0SLionel Sambuc * 3. Neither the name of the Institute nor the names of its contributors
20*ebfedea0SLionel Sambuc * may be used to endorse or promote products derived from this software
21*ebfedea0SLionel Sambuc * without specific prior written permission.
22*ebfedea0SLionel Sambuc *
23*ebfedea0SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24*ebfedea0SLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25*ebfedea0SLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26*ebfedea0SLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27*ebfedea0SLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28*ebfedea0SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29*ebfedea0SLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30*ebfedea0SLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31*ebfedea0SLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32*ebfedea0SLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33*ebfedea0SLionel Sambuc * SUCH DAMAGE.
34*ebfedea0SLionel Sambuc */
35*ebfedea0SLionel Sambuc
36*ebfedea0SLionel Sambuc #include "krb5_locl.h"
37*ebfedea0SLionel Sambuc
38*ebfedea0SLionel Sambuc KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_read_message(krb5_context context,krb5_pointer p_fd,krb5_data * data)39*ebfedea0SLionel Sambuc krb5_read_message (krb5_context context,
40*ebfedea0SLionel Sambuc krb5_pointer p_fd,
41*ebfedea0SLionel Sambuc krb5_data *data)
42*ebfedea0SLionel Sambuc {
43*ebfedea0SLionel Sambuc krb5_error_code ret;
44*ebfedea0SLionel Sambuc uint32_t len;
45*ebfedea0SLionel Sambuc uint8_t buf[4];
46*ebfedea0SLionel Sambuc
47*ebfedea0SLionel Sambuc krb5_data_zero(data);
48*ebfedea0SLionel Sambuc
49*ebfedea0SLionel Sambuc ret = krb5_net_read (context, p_fd, buf, 4);
50*ebfedea0SLionel Sambuc if(ret == -1) {
51*ebfedea0SLionel Sambuc ret = errno;
52*ebfedea0SLionel Sambuc krb5_clear_error_message (context);
53*ebfedea0SLionel Sambuc return ret;
54*ebfedea0SLionel Sambuc }
55*ebfedea0SLionel Sambuc if(ret < 4) {
56*ebfedea0SLionel Sambuc krb5_clear_error_message(context);
57*ebfedea0SLionel Sambuc return HEIM_ERR_EOF;
58*ebfedea0SLionel Sambuc }
59*ebfedea0SLionel Sambuc len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
60*ebfedea0SLionel Sambuc ret = krb5_data_alloc (data, len);
61*ebfedea0SLionel Sambuc if (ret) {
62*ebfedea0SLionel Sambuc krb5_clear_error_message(context);
63*ebfedea0SLionel Sambuc return ret;
64*ebfedea0SLionel Sambuc }
65*ebfedea0SLionel Sambuc if (krb5_net_read (context, p_fd, data->data, len) != len) {
66*ebfedea0SLionel Sambuc ret = errno;
67*ebfedea0SLionel Sambuc krb5_data_free (data);
68*ebfedea0SLionel Sambuc krb5_clear_error_message (context);
69*ebfedea0SLionel Sambuc return ret;
70*ebfedea0SLionel Sambuc }
71*ebfedea0SLionel Sambuc return 0;
72*ebfedea0SLionel Sambuc }
73*ebfedea0SLionel Sambuc
74*ebfedea0SLionel Sambuc 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)75*ebfedea0SLionel Sambuc krb5_read_priv_message(krb5_context context,
76*ebfedea0SLionel Sambuc krb5_auth_context ac,
77*ebfedea0SLionel Sambuc krb5_pointer p_fd,
78*ebfedea0SLionel Sambuc krb5_data *data)
79*ebfedea0SLionel Sambuc {
80*ebfedea0SLionel Sambuc krb5_error_code ret;
81*ebfedea0SLionel Sambuc krb5_data packet;
82*ebfedea0SLionel Sambuc
83*ebfedea0SLionel Sambuc ret = krb5_read_message(context, p_fd, &packet);
84*ebfedea0SLionel Sambuc if(ret)
85*ebfedea0SLionel Sambuc return ret;
86*ebfedea0SLionel Sambuc ret = krb5_rd_priv (context, ac, &packet, data, NULL);
87*ebfedea0SLionel Sambuc krb5_data_free(&packet);
88*ebfedea0SLionel Sambuc return ret;
89*ebfedea0SLionel Sambuc }
90*ebfedea0SLionel Sambuc
91*ebfedea0SLionel Sambuc 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)92*ebfedea0SLionel Sambuc krb5_read_safe_message(krb5_context context,
93*ebfedea0SLionel Sambuc krb5_auth_context ac,
94*ebfedea0SLionel Sambuc krb5_pointer p_fd,
95*ebfedea0SLionel Sambuc krb5_data *data)
96*ebfedea0SLionel Sambuc {
97*ebfedea0SLionel Sambuc krb5_error_code ret;
98*ebfedea0SLionel Sambuc krb5_data packet;
99*ebfedea0SLionel Sambuc
100*ebfedea0SLionel Sambuc ret = krb5_read_message(context, p_fd, &packet);
101*ebfedea0SLionel Sambuc if(ret)
102*ebfedea0SLionel Sambuc return ret;
103*ebfedea0SLionel Sambuc ret = krb5_rd_safe (context, ac, &packet, data, NULL);
104*ebfedea0SLionel Sambuc krb5_data_free(&packet);
105*ebfedea0SLionel Sambuc return ret;
106*ebfedea0SLionel Sambuc }
107