xref: /freebsd/crypto/heimdal/appl/test/common.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*
2  * Copyright (c) 1997 - 2000 Kungliga Tekniska H�gskolan
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 
36 RCSID("$Id: common.c,v 1.11 2000/08/27 04:29:34 assar Exp $");
37 
38 static int help_flag;
39 static int version_flag;
40 static char *port_str;
41 static char *keytab_str;
42 krb5_keytab keytab;
43 char *service = SERVICE;
44 int fork_flag;
45 
46 static struct getargs args[] = {
47     { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
48     { "service", 's', arg_string, &service, "service to use", "service" },
49     { "keytab", 'k', arg_string, &keytab_str, "keytab to use", "keytab" },
50     { "fork", 'f', arg_flag, &fork_flag, "do fork" },
51     { "help", 'h', arg_flag, &help_flag },
52     { "version", 0, arg_flag, &version_flag }
53 };
54 
55 static int num_args = sizeof(args) / sizeof(args[0]);
56 
57 static void
58 server_usage(int code, struct getargs *args, int num_args)
59 {
60     arg_printusage(args, num_args, NULL, "");
61     exit(code);
62 }
63 
64 static void
65 client_usage(int code, struct getargs *args, int num_args)
66 {
67     arg_printusage(args, num_args, NULL, "host");
68     exit(code);
69 }
70 
71 
72 static int
73 common_setup(krb5_context *context, int *argc, char **argv,
74 	     void (*usage)(int, struct getargs*, int))
75 {
76     int port = 0;
77     *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
78 
79     if(help_flag)
80 	(*usage)(0, args, num_args);
81     if(version_flag) {
82 	print_version(NULL);
83 	exit(0);
84     }
85 
86     if(port_str){
87 	struct servent *s = roken_getservbyname(port_str, "tcp");
88 	if(s)
89 	    port = s->s_port;
90 	else {
91 	    char *ptr;
92 
93 	    port = strtol (port_str, &ptr, 10);
94 	    if (port == 0 && ptr == port_str)
95 		errx (1, "Bad port `%s'", port_str);
96 	    port = htons(port);
97 	}
98     }
99 
100     if (port == 0)
101 	port = krb5_getportbyname (*context, PORT, "tcp", 4711);
102 
103     return port;
104 }
105 
106 int
107 server_setup(krb5_context *context, int argc, char **argv)
108 {
109     int port = common_setup(context, &argc, argv, server_usage);
110     krb5_error_code ret;
111 
112     if(argv[argc] != NULL)
113 	server_usage(1, args, num_args);
114     if (keytab_str != NULL)
115 	ret = krb5_kt_resolve (*context, keytab_str, &keytab);
116     else
117 	ret = krb5_kt_default (*context, &keytab);
118     if (ret)
119 	krb5_err (*context, 1, ret, "krb5_kt_resolve/default");
120     return port;
121 }
122 
123 int
124 client_setup(krb5_context *context, int *argc, char **argv)
125 {
126     int optind = *argc;
127     int port = common_setup(context, &optind, argv, client_usage);
128     if(*argc - optind != 1)
129 	client_usage(1, args, num_args);
130     *argc = optind;
131     return port;
132 }
133 
134 int
135 client_doit (const char *hostname, int port, const char *service,
136 	     int (*func)(int, const char *hostname, const char *service))
137 {
138     struct addrinfo *ai, *a;
139     struct addrinfo hints;
140     int error;
141     char portstr[NI_MAXSERV];
142 
143     memset (&hints, 0, sizeof(hints));
144     hints.ai_socktype = SOCK_STREAM;
145     hints.ai_protocol = IPPROTO_TCP;
146 
147     snprintf (portstr, sizeof(portstr), "%u", ntohs(port));
148 
149     error = getaddrinfo (hostname, portstr, &hints, &ai);
150     if (error) {
151 	errx (1, "%s: %s", hostname, gai_strerror(error));
152 	return -1;
153     }
154 
155     for (a = ai; a != NULL; a = a->ai_next) {
156 	int s;
157 
158 	s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
159 	if (s < 0)
160 	    continue;
161 	if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
162 	    warn ("connect(%s)", hostname);
163 	    close (s);
164 	    continue;
165 	}
166 	freeaddrinfo (ai);
167 	return (*func) (s, hostname, service);
168     }
169     warnx ("failed to contact %s", hostname);
170     freeaddrinfo (ai);
171     return 1;
172 }
173