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
36 RCSID("$Id$");
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 char *mech = "krb5";
45 int fork_flag;
46 char *password = NULL;
47
48 static 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
59 static int num_args = sizeof(args) / sizeof(args[0]);
60
61 static void
server_usage(int code,struct getargs * args,int num_args)62 server_usage(int code, struct getargs *args, int num_args)
63 {
64 arg_printusage(args, num_args, NULL, "");
65 exit(code);
66 }
67
68 static void
client_usage(int code,struct getargs * args,int num_args)69 client_usage(int code, struct getargs *args, int num_args)
70 {
71 arg_printusage(args, num_args, NULL, "host");
72 exit(code);
73 }
74
75
76 static int
common_setup(krb5_context * context,int * argc,char ** argv,void (* usage)(int,struct getargs *,int))77 common_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
110 int
server_setup(krb5_context * context,int argc,char ** argv)111 server_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
127 int
client_setup(krb5_context * context,int * argc,char ** argv)128 client_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
138 int
client_doit(const char * hostname,int port,const char * service,int (* func)(int,const char * hostname,const char * service))139 client_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