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
41 RCSID("$Id$");
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
50 static int help_flag;
51 static int version_flag;
52 static char *port_str;
53 char *service = SERVICE;
54 static char *auth_file;
55
56 static 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
65 static int num_args = sizeof(args) / sizeof(args[0]);
66
67 static int
proto(int sock,const char * service)68 proto (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
155 static int
doit(int port,const char * service)156 doit (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
188 static void
usage(int code,struct getargs * args,int num_args)189 usage(int code, struct getargs *args, int num_args)
190 {
191 arg_printusage(args, num_args, NULL, "");
192 exit(code);
193 }
194
195 static int
common_setup(krb5_context * context,int * argc,char ** argv,void (* usage)(int,struct getargs *,int))196 common_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
229 static int
setup(krb5_context * context,int argc,char ** argv)230 setup(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
238 int
main(int argc,char ** argv)239 main(int argc, char **argv)
240 {
241 krb5_context context = NULL; /* XXX */
242 int port = setup(&context, argc, argv);
243 return doit (port, service);
244 }
245