crypto/dist/heimdal/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("$Heimdal: common.c 12796 2003-09-09 03:38:04Z lha $"
  37         "$NetBSD$");
  38
  39 static int help_flag;
  40 static int version_flag;
  41 static char *port_str;
  42 static char *keytab_str;
  43 krb5_keytab keytab;
  44 char *service = SERVICE;
  45 char *mech = "krb5";
  46 int fork_flag;
  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     { "fork", 'f', arg_flag, &fork_flag, "do fork" },
  54     { "help", 'h', arg_flag, &help_flag },
  55     { "version", 0, arg_flag, &version_flag }
  56 };
  57
  58 static int num_args = sizeof(args) / sizeof(args[0]);
  59
  60 static void
  61 server_usage(int code, struct getargs *args, int num_args)
  62 {
  63     arg_printusage(args, num_args, NULL, "");
  64     exit(code);
  65 }
  66
  67 static void
  68 client_usage(int code, struct getargs *args, int num_args)
  69 {
  70     arg_printusage(args, num_args, NULL, "host");
  71     exit(code);
  72 }
  73
  74
  75 static int
  76 common_setup(krb5_context *context, int *argc, char **argv,
  77              void (*usage)(int, struct getargs*, int))
  78 {
  79     int port = 0;
  80     *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
  81
  82     if(help_flag)
  83         (*usage)(0, args, num_args);
  84     if(version_flag) {
  85         print_version(NULL);
  86         exit(0);
  87     }
  88
  89     if(port_str){
  90         struct servent *s = roken_getservbyname(port_str, "tcp");
  91         if(s)
  92             port = s->s_port;
  93         else {
  94             char *ptr;
  95
  96             port = strtol (port_str, &ptr, 10);
  97             if (port == 0 && ptr == port_str)
  98                 errx (1, "Bad port `%s'", port_str);
  99             port = htons(port);
 100         }
 101     }
 102
 103     if (port == 0)
 104         port = krb5_getportbyname (*context, PORT, "tcp", 4711);
 105
 106     return port;
 107 }
 108
 109 int
 110 server_setup(krb5_context *context, int argc, char **argv)
 111 {
 112     int port = common_setup(context, &argc, argv, server_usage);
 113     krb5_error_code ret;
 114
 115     if(argv[argc] != NULL)
 116         server_usage(1, args, num_args);
 117     if (keytab_str != NULL)
 118         ret = krb5_kt_resolve (*context, keytab_str, &keytab);
 119     else
 120         ret = krb5_kt_default (*context, &keytab);
 121     if (ret)
 122         krb5_err (*context, 1, ret, "krb5_kt_resolve/default");
 123     return port;
 124 }
 125
 126 int
 127 client_setup(krb5_context *context, int *argc, char **argv)
 128 {
 129     int optind = *argc;
 130     int port = common_setup(context, &optind, argv, client_usage);
 131     if(*argc - optind != 1)
 132         client_usage(1, args, num_args);
 133     *argc = optind;
 134     return port;
 135 }
 136
 137 int
 138 client_doit (const char *hostname, int port, const char *service,
 139              int (*func)(int, const char *hostname, const char *service))
 140 {
 141     struct addrinfo *ai, *a;
 142     struct addrinfo hints;
 143     int error;
 144     char portstr[NI_MAXSERV];
 145
 146     memset (&hints, 0, sizeof(hints));
 147     hints.ai_socktype = SOCK_STREAM;
 148     hints.ai_protocol = IPPROTO_TCP;
 149
 150     snprintf (portstr, sizeof(portstr), "%u", ntohs(port));
 151
 152     error = getaddrinfo (hostname, portstr, &hints, &ai);
 153     if (error) {
 154         errx (1, "%s: %s", hostname, gai_strerror(error));
 155         return -1;
 156     }
 157
 158     for (a = ai; a != NULL; a = a->ai_next) {
 159         int s;
 160
 161         s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
 162         if (s < 0)
 163             continue;
 164         if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
 165             warn ("connect(%s)", hostname);
 166             close (s);
 167             continue;
 168         }
 169         freeaddrinfo (ai);
 170         return (*func) (s, hostname, service);
 171     }
 172     warnx ("failed to contact %s", hostname);
 173     freeaddrinfo (ai);
 174     return 1;
 175 }