1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright (c) 1997 - 2000, 2007 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 "test_locl.h"
RCSID("$Id: uu_server.c 20880 2007-06-04 16:55:00Z lha $");
krb5_context context;
static int
proto (int sock, const char *service)
{
struct sockaddr_in remote, local;
socklen_t addrlen;
krb5_address remote_addr, local_addr;
krb5_ccache ccache;
krb5_auth_context auth_context;
krb5_error_code status;
krb5_data packet;
krb5_data data;
krb5_data client_name;
krb5_creds in_creds, *out_creds;
addrlen = sizeof(local);
if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
|| addrlen != sizeof(local))
err (1, "getsockname)");
addrlen = sizeof(remote);
if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
|| addrlen != sizeof(remote))
err (1, "getpeername");
status = krb5_auth_con_init (context, &auth_context);
if (status)
errx (1, "krb5_auth_con_init: %s",
krb5_get_err_text(context, status));
local_addr.addr_type = AF_INET;
local_addr.address.length = sizeof(local.sin_addr);
local_addr.address.data = &local.sin_addr;
remote_addr.addr_type = AF_INET;
remote_addr.address.length = sizeof(remote.sin_addr);
remote_addr.address.data = &remote.sin_addr;
status = krb5_auth_con_setaddrs (context,
auth_context,
&local_addr,
&remote_addr);
if (status)
errx (1, "krb5_auth_con_setaddr: %s",
krb5_get_err_text(context, status));
status = krb5_read_message(context, &sock, &client_name);
if(status)
krb5_err(context, 1, status, "krb5_read_message");
memset(&in_creds, 0, sizeof(in_creds));
status = krb5_cc_default(context, &ccache);
status = krb5_cc_get_principal(context, ccache, &in_creds.client);
status = krb5_read_message(context, &sock, &in_creds.second_ticket);
if(status)
krb5_err(context, 1, status, "krb5_read_message");
status = krb5_parse_name(context, client_name.data, &in_creds.server);
if(status)
krb5_err(context, 1, status, "krb5_parse_name");
status = krb5_get_credentials(context, KRB5_GC_USER_USER, ccache,
&in_creds, &out_creds);
if(status)
krb5_err(context, 1, status, "krb5_get_credentials");
status = krb5_cc_default(context, &ccache);
status = krb5_sendauth(context,
&auth_context,
&sock,
VERSION,
in_creds.client,
in_creds.server,
AP_OPTS_USE_SESSION_KEY,
NULL,
out_creds,
ccache,
NULL,
NULL,
NULL);
if (status)
krb5_err(context, 1, status, "krb5_sendauth");
{
char *str;
krb5_unparse_name(context, in_creds.server, &str);
printf ("User is `%s'\n", str);
free(str);
krb5_unparse_name(context, in_creds.client, &str);
printf ("Server is `%s'\n", str);
free(str);
}
krb5_data_zero (&data);
krb5_data_zero (&packet);
status = krb5_read_message(context, &sock, &packet);
if(status)
krb5_err(context, 1, status, "krb5_read_message");
status = krb5_rd_safe (context,
auth_context,
&packet,
&data,
NULL);
if (status)
errx (1, "krb5_rd_safe: %s",
krb5_get_err_text(context, status));
printf ("safe packet: %.*s\n", (int)data.length,
(char *)data.data);
status = krb5_read_message(context, &sock, &packet);
if(status)
krb5_err(context, 1, status, "krb5_read_message");
status = krb5_rd_priv (context,
auth_context,
&packet,
&data,
NULL);
if (status)
errx (1, "krb5_rd_priv: %s",
krb5_get_err_text(context, status));
printf ("priv packet: %.*s\n", (int)data.length,
(char *)data.data);
return 0;
}
static int
doit (int port, const char *service)
{
int sock, sock2;
struct sockaddr_in my_addr;
int one = 1;
sock = socket (AF_INET, SOCK_STREAM, 0);
if (sock < 0)
err (1, "socket");
memset (&my_addr, 0, sizeof(my_addr));
my_addr.sin_family = AF_INET;
my_addr.sin_port = port;
my_addr.sin_addr.s_addr = INADDR_ANY;
if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
(void *)&one, sizeof(one)) < 0)
warn ("setsockopt SO_REUSEADDR");
if (bind (sock, (struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
err (1, "bind");
if (listen (sock, 1) < 0)
err (1, "listen");
sock2 = accept (sock, NULL, NULL);
if (sock2 < 0)
err (1, "accept");
return proto (sock2, service);
}
int
main(int argc, char **argv)
{
int port = server_setup(&context, argc, argv);
return doit (port, service);
}
|
