appl/test/common.c

   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
  47 static struct getargs args[] = {
  48     { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
  49     { "service", 's', arg_string, &service, "service to use", "service" },
  50     { "keytab", 'k', arg_string, &keytab_str, "keytab to use", "keytab" },
  51     { "mech", 'm', arg_string, &mech, "gssapi mech to use", "mech" },
  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
  57 static int num_args = sizeof(args) / sizeof(args[0]);
  58
  59 static void
  60 server_usage(int code, struct getargs *args, int num_args)
  61 {
  62     arg_printusage(args, num_args, NULL, "");
  63     exit(code);
  64 }
  65
  66 static void
  67 client_usage(int code, struct getargs *args, int num_args)
  68 {
  69     arg_printusage(args, num_args, NULL, "host");
  70     exit(code);
  71 }
  72
  73
  74 static int
  75 common_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 = 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
 108 int
 109 server_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
 125 int
 126 client_setup(krb5_context *context, int *argc, char **argv)
 127 {
 128     int optind = *argc;
 129     int port = common_setup(context, &optind, argv, client_usage);
 130     if(*argc - optind != 1)
 131         client_usage(1, args, num_args);
 132     *argc = optind;
 133     return port;
 134 }
 135
 136 int
 137 client_doit (const char *hostname, int port, const char *service,
 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         return -1;
 155     }
 156
 157     for (a = ai; a != NULL; a = a->ai_next) {
 158         int s;
 159
 160         s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
 161         if (s < 0)
 162             continue;
 163         if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
 164             warn ("connect(%s)", hostname);
 165             close (s);
 166             continue;
 167         }
 168         freeaddrinfo (ai);
 169         return (*func) (s, hostname, service);
 170     }
 171     warnx ("failed to contact %s", hostname);
 172     freeaddrinfo (ai);
 173     return 1;
 174 }