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
36RCSID("$Id$");
37
38static int help_flag;
39static int version_flag;
40static char *port_str;
41static char *keytab_str;
42krb5_keytab keytab;
43char *service = SERVICE;
44char *mech = "krb5";
45int fork_flag;
46char *password = NULL;
47
48static struct getargs args[] = {
49    { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
50    { "service", 's', arg_string, &service, "service to use", "service" },
51    { "keytab", 'k', arg_string, &keytab_str, "keytab to use", "keytab" },
52    { "mech", 'm', arg_string, &mech, "gssapi mech to use", "mech" },
53    { "password", 'P', arg_string, &password, "password to use", "password" },
54    { "fork", 'f', arg_flag, &fork_flag, "do fork" },
55    { "help", 'h', arg_flag, &help_flag },
56    { "version", 0, arg_flag, &version_flag }
57};
58
59static int num_args = sizeof(args) / sizeof(args[0]);
60
61static void
62server_usage(int code, struct getargs *args, int num_args)
63{
64    arg_printusage(args, num_args, NULL, "");
65    exit(code);
66}
67
68static void
69client_usage(int code, struct getargs *args, int num_args)
70{
71    arg_printusage(args, num_args, NULL, "host");
72    exit(code);
73}
74
75
76static int
77common_setup(krb5_context *context, int *argc, char **argv,
78	     void (*usage)(int, struct getargs*, int))
79{
80    int port = 0;
81    *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
82
83    if(help_flag)
84	(*usage)(0, args, num_args);
85    if(version_flag) {
86	print_version(NULL);
87	exit(0);
88    }
89
90    if(port_str){
91	struct servent *s = roken_getservbyname(port_str, "tcp");
92	if(s)
93	    port = s->s_port;
94	else {
95	    char *ptr;
96
97	    port = strtol (port_str, &ptr, 10);
98	    if (port == 0 && ptr == port_str)
99		errx (1, "Bad port `%s'", port_str);
100	    port = htons(port);
101	}
102    }
103
104    if (port == 0)
105	port = krb5_getportbyname (*context, PORT, "tcp", 4711);
106
107    return port;
108}
109
110int
111server_setup(krb5_context *context, int argc, char **argv)
112{
113    int port = common_setup(context, &argc, argv, server_usage);
114    krb5_error_code ret;
115
116    if(argv[argc] != NULL)
117	server_usage(1, args, num_args);
118    if (keytab_str != NULL)
119	ret = krb5_kt_resolve (*context, keytab_str, &keytab);
120    else
121	ret = krb5_kt_default (*context, &keytab);
122    if (ret)
123	krb5_err (*context, 1, ret, "krb5_kt_resolve/default");
124    return port;
125}
126
127int
128client_setup(krb5_context *context, int *argc, char **argv)
129{
130    int optind = *argc;
131    int port = common_setup(context, &optind, argv, client_usage);
132    if(*argc - optind != 1)
133	client_usage(1, args, num_args);
134    *argc = optind;
135    return port;
136}
137
138int
139client_doit (const char *hostname, int port, const char *service,
140	     int (*func)(int, const char *hostname, const char *service))
141{
142    struct addrinfo *ai, *a;
143    struct addrinfo hints;
144    int error;
145    char portstr[NI_MAXSERV];
146
147    memset (&hints, 0, sizeof(hints));
148    hints.ai_socktype = SOCK_STREAM;
149    hints.ai_protocol = IPPROTO_TCP;
150
151    snprintf (portstr, sizeof(portstr), "%u", ntohs(port));
152
153    error = getaddrinfo (hostname, portstr, &hints, &ai);
154    if (error) {
155	errx (1, "%s: %s", hostname, gai_strerror(error));
156	return -1;
157    }
158
159    for (a = ai; a != NULL; a = a->ai_next) {
160	int s;
161
162	s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
163	if (s < 0)
164	    continue;
165	if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
166	    warn ("connect(%s)", hostname);
167	    close (s);
168	    continue;
169	}
170	freeaddrinfo (ai);
171	return (*func) (s, hostname, service);
172    }
173    warnx ("failed to contact %s", hostname);
174    freeaddrinfo (ai);
175    return 1;
176}
177