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