1/*
2 * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "test_locl.h"
35#include <gssapi/gssapi.h>
36#include <gssapi/gssapi_krb5.h>
37#include <gssapi/gssapi_spnego.h>
38#include <krb5.h>
39#include "nt_gss_common.h"
40
41RCSID("$Id$");
42
43/*
44 * This program tries to act as a server for the sample in `Sample
45 * SSPI Code' in Windows 2000 RC1 SDK.
46 *
47 * use --dump-auth to get a binary dump of the authorization data in the ticket
48 */
49
50static int help_flag;
51static int version_flag;
52static char *port_str;
53char *service = SERVICE;
54static char *auth_file;
55
56static struct getargs args[] = {
57    { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
58    { "service", 's', arg_string, &service, "service to use", "service" },
59    { "dump-auth", 0, arg_string, &auth_file, "dump authorization data",
60      "file" },
61    { "help", 'h', arg_flag, &help_flag },
62    { "version", 0, arg_flag, &version_flag }
63};
64
65static int num_args = sizeof(args) / sizeof(args[0]);
66
67static int
68proto (int sock, const char *service)
69{
70    struct sockaddr_in remote, local;
71    socklen_t addrlen;
72    gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
73    gss_buffer_t input_token, output_token;
74    gss_buffer_desc real_input_token, real_output_token;
75    OM_uint32 maj_stat, min_stat;
76    gss_name_t client_name;
77    gss_buffer_desc name_token;
78
79    addrlen = sizeof(local);
80    if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
81	|| addrlen != sizeof(local))
82	err (1, "getsockname)");
83
84    addrlen = sizeof(remote);
85    if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
86	|| addrlen != sizeof(remote))
87	err (1, "getpeername");
88
89    input_token = &real_input_token;
90    output_token = &real_output_token;
91
92    do {
93	nt_read_token (sock, input_token);
94	maj_stat =
95	    gss_accept_sec_context (&min_stat,
96				    &context_hdl,
97				    GSS_C_NO_CREDENTIAL,
98				    input_token,
99				    GSS_C_NO_CHANNEL_BINDINGS,
100				    &client_name,
101				    NULL,
102				    output_token,
103				    NULL,
104				    NULL,
105				    NULL);
106	if(GSS_ERROR(maj_stat))
107	    gss_err (1, min_stat, "gss_accept_sec_context");
108	if (output_token->length != 0)
109	    nt_write_token (sock, output_token);
110	if (GSS_ERROR(maj_stat)) {
111	    if (context_hdl != GSS_C_NO_CONTEXT)
112		gss_delete_sec_context (&min_stat,
113					&context_hdl,
114					GSS_C_NO_BUFFER);
115	    break;
116	}
117    } while(maj_stat & GSS_S_CONTINUE_NEEDED);
118
119    if (auth_file != NULL) {
120	gss_buffer_desc data;
121
122	maj_stat = gsskrb5_extract_authz_data_from_sec_context(&min_stat,
123							       context_hdl,
124							       KRB5_AUTHDATA_WIN2K_PAC,
125							       &data);
126	if (maj_stat == GSS_S_COMPLETE) {
127	    rk_dumpdata(auth_file, data.value, data.length);
128	    gss_release_buffer(&min_stat, &data);
129	}
130    }
131
132    maj_stat = gss_display_name (&min_stat,
133				 client_name,
134				 &name_token,
135				 NULL);
136    if (GSS_ERROR(maj_stat))
137	gss_err (1, min_stat, "gss_display_name");
138
139    fprintf (stderr, "User is `%.*s'\n", (int)name_token.length,
140	    (char *)name_token.value);
141
142    /* write something back */
143
144    output_token->value  = strdup ("hejsan");
145    output_token->length = strlen (output_token->value) + 1;
146    nt_write_token (sock, output_token);
147
148    output_token->value  = strdup ("hoppsan");
149    output_token->length = strlen (output_token->value) + 1;
150    nt_write_token (sock, output_token);
151
152    return 0;
153}
154
155static int
156doit (int port, const char *service)
157{
158    int sock, sock2;
159    struct sockaddr_in my_addr;
160    int one = 1;
161
162    sock = socket (AF_INET, SOCK_STREAM, 0);
163    if (sock < 0)
164	err (1, "socket");
165
166    memset (&my_addr, 0, sizeof(my_addr));
167    my_addr.sin_family      = AF_INET;
168    my_addr.sin_port        = port;
169    my_addr.sin_addr.s_addr = INADDR_ANY;
170
171    if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
172		    (void *)&one, sizeof(one)) < 0)
173	warn ("setsockopt SO_REUSEADDR");
174
175    if (bind (sock, (struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
176	err (1, "bind");
177
178    if (listen (sock, 1) < 0)
179	err (1, "listen");
180
181    sock2 = accept (sock, NULL, NULL);
182    if (sock2 < 0)
183	err (1, "accept");
184
185    return proto (sock2, service);
186}
187
188static void
189usage(int code, struct getargs *args, int num_args)
190{
191    arg_printusage(args, num_args, NULL, "");
192    exit(code);
193}
194
195static int
196common_setup(krb5_context *context, int *argc, char **argv,
197	     void (*usage)(int, struct getargs*, int))
198{
199    int port = 0;
200    *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
201
202    if(help_flag)
203	(*usage)(0, args, num_args);
204    if(version_flag) {
205	print_version(NULL);
206	exit(0);
207    }
208
209    if(port_str){
210	struct servent *s = roken_getservbyname(port_str, "tcp");
211	if(s)
212	    port = s->s_port;
213	else {
214	    char *ptr;
215
216	    port = strtol (port_str, &ptr, 10);
217	    if (port == 0 && ptr == port_str)
218		errx (1, "Bad port `%s'", port_str);
219	    port = htons(port);
220	}
221    }
222
223    if (port == 0)
224	port = krb5_getportbyname (*context, PORT, "tcp", 4711);
225
226    return port;
227}
228
229static int
230setup(krb5_context *context, int argc, char **argv)
231{
232    int port = common_setup(context, &argc, argv, usage);
233    if(argv[argc] != NULL)
234	usage(1, args, num_args);
235    return port;
236}
237
238int
239main(int argc, char **argv)
240{
241    krb5_context context = NULL; /* XXX */
242    int port = setup(&context, argc, argv);
243    return doit (port, service_str);
244}
245