2 * Copyright (c) 1997 - 2000, 2002 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
35 RCSID("$Id: kf.c 11400 2002-09-05 15:00:03Z joda $");
39 static int version_flag;
40 static char *port_str;
41 const char *service = KF_SERVICE;
42 const char *remote_name = NULL;
44 const char *ccache_name = NULL;
46 static struct getargs args[] = {
47 { "port", 'p', arg_string, &port_str, "port to connect to", "port" },
48 { "login", 'l',arg_string, &remote_name,"remote login name","login"},
49 { "ccache", 'c',arg_string, &ccache_name, "remote cred cache","ccache"},
50 { "forwardable",'F',arg_flag,&forwardable,
51 "Forward forwardable credentials", NULL },
52 { "forwardable",'G',arg_negative_flag,&forwardable,
53 "Don't forward forwardable credentials", NULL },
54 { "help", 'h', arg_flag, &help_flag },
55 { "version", 0, arg_flag, &version_flag }
58 static int num_args = sizeof(args) / sizeof(args[0]);
61 usage(int code, struct getargs *args, int num_args)
63 arg_printusage(args, num_args, NULL, "hosts");
68 client_setup(krb5_context *context, int *argc, char **argv)
74 setprogname (argv[0]);
76 status = krb5_init_context (context);
78 errx(1, "krb5_init_context failed: %d", status);
80 forwardable = krb5_config_get_bool (*context, NULL,
85 if (getarg (args, num_args, *argc, argv, &optind))
86 usage(1, args, num_args);
89 usage (0, args, num_args);
96 struct servent *s = roken_getservbyname(port_str, "tcp");
102 port = strtol (port_str, &ptr, 10);
103 if (port == 0 && ptr == port_str)
104 errx (1, "Bad port `%s'", port_str);
110 port = krb5_getportbyname (*context, KF_PORT_NAME, "tcp", KF_PORT_NUM);
112 if(*argc - optind < 1)
113 usage(1, args, num_args);
120 * forward creds to `hostname'/`service' over `sock'
125 proto (int sock, const char *hostname, const char *service,
126 char *message, size_t len)
128 krb5_auth_context auth_context;
129 krb5_error_code status;
130 krb5_principal server;
136 krb5_kdc_flags flags;
137 krb5_principal principal;
139 status = krb5_auth_con_init (context, &auth_context);
141 krb5_warn (context, status, "krb5_auth_con_init");
145 status = krb5_auth_con_setaddrs_from_fd (context,
149 krb5_warn (context, status, "krb5_auth_con_setaddr");
153 status = krb5_sname_to_principal (context,
159 krb5_warn (context, status, "krb5_sname_to_principal");
163 status = krb5_sendauth (context,
169 AP_OPTS_MUTUAL_REQUIRED | AP_OPTS_USE_SUBKEY,
177 krb5_warn(context, status, "krb5_sendauth");
181 if (ccache_name == NULL)
184 data_send.data = (void *)remote_name;
185 data_send.length = strlen(remote_name) + 1;
186 status = krb5_write_priv_message(context, auth_context, &sock, &data_send);
188 krb5_warn (context, status, "krb5_write_message");
191 data_send.data = (void *)ccache_name;
192 data_send.length = strlen(ccache_name)+1;
193 status = krb5_write_priv_message(context, auth_context, &sock, &data_send);
195 krb5_warn (context, status, "krb5_write_message");
199 memset (&creds, 0, sizeof(creds));
201 status = krb5_cc_default (context, &ccache);
203 krb5_warn (context, status, "krb5_cc_default");
207 status = krb5_cc_get_principal (context, ccache, &principal);
209 krb5_warn (context, status, "krb5_cc_get_principal");
213 creds.client = principal;
215 status = krb5_make_principal (context,
223 krb5_warn (context, status, "krb5_make_principal");
227 creds.times.endtime = 0;
230 flags.b.forwarded = 1;
231 flags.b.forwardable = forwardable;
233 status = krb5_get_forwarded_creds (context,
241 krb5_warn (context, status, "krb5_get_forwarded_creds");
245 status = krb5_write_priv_message(context, auth_context, &sock, &data);
248 krb5_warn (context, status, "krb5_mk_priv");
252 krb5_data_free (&data);
254 status = krb5_read_priv_message(context, auth_context, &sock, &data);
256 krb5_warn (context, status, "krb5_mk_priv");
259 if(data.length >= len) {
260 krb5_warnx (context, "returned string is too long, truncating");
261 memcpy(message, data.data, len);
262 message[len - 1] = '\0';
264 memcpy(message, data.data, data.length);
265 message[data.length] = '\0';
267 krb5_data_free (&data);
269 return(strcmp(message, "ok"));
273 doit (const char *hostname, int port, const char *service,
274 char *message, size_t len)
276 struct addrinfo *ai, *a;
277 struct addrinfo hints;
279 char portstr[NI_MAXSERV];
281 memset (&hints, 0, sizeof(hints));
282 hints.ai_socktype = SOCK_STREAM;
283 hints.ai_protocol = IPPROTO_TCP;
285 snprintf (portstr, sizeof(portstr), "%u", ntohs(port));
287 error = getaddrinfo (hostname, portstr, &hints, &ai);
289 errx (1, "getaddrinfo(%s): %s", hostname, gai_strerror(error));
292 for (a = ai; a != NULL; a = a->ai_next) {
295 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
298 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
299 warn ("connect(%s)", hostname);
304 return proto (s, hostname, service, message, len);
306 warnx ("failed to contact %s", hostname);
312 main(int argc, char **argv)
318 port = client_setup(&context, &argcc, argv);
320 if (remote_name == NULL) {
321 remote_name = get_default_username ();
322 if (remote_name == NULL)
323 errx (1, "who are you?");
326 for (i = argcc;i < argc; i++) {
328 ret = doit (argv[i], port, service, message, sizeof(message));
330 warnx ("%s: ok", argv[i]);
332 warnx ("%s: failed: %s", argv[i], message);