appl/test/tcp_server.c

   1 /*
   2  * Copyright (c) 1997 - 1999 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 RCSID("$Id$");
  36
  37 krb5_context context;
  38
  39 static int
  40 proto (int sock, const char *service)
  41 {
  42     krb5_auth_context auth_context;
  43     krb5_error_code status;
  44     krb5_principal server;
  45     krb5_ticket *ticket;
  46     char *name;
  47     char hostname[MAXHOSTNAMELEN];
  48     krb5_data packet;
  49     krb5_data data;
  50     uint32_t len, net_len;
  51     ssize_t n;
  52
  53     status = krb5_auth_con_init (context, &auth_context);
  54     if (status)
  55         krb5_err (context, 1, status, "krb5_auth_con_init");
  56
  57     status = krb5_auth_con_setaddrs_from_fd (context,
  58                                              auth_context,
  59                                              &sock);
  60
  61     if (status)
  62         krb5_err (context, 1, status, "krb5_auth_con_setaddrs_from_fd");
  63
  64     if(gethostname (hostname, sizeof(hostname)) < 0)
  65         krb5_err (context, 1, errno, "gethostname");
  66
  67     status = krb5_sname_to_principal (context,
  68                                       hostname,
  69                                       service,
  70                                       KRB5_NT_SRV_HST,
  71                                       &server);
  72     if (status)
  73         krb5_err (context, 1, status, "krb5_sname_to_principal");
  74
  75     status = krb5_recvauth (context,
  76                             &auth_context,
  77                             &sock,
  78                             VERSION,
  79                             server,
  80                             0,
  81                             keytab,
  82                             &ticket);
  83     if (status)
  84         krb5_err (context, 1, status, "krb5_recvauth");
  85
  86     status = krb5_unparse_name (context,
  87                                 ticket->client,
  88                                 &name);
  89     if (status)
  90         krb5_err (context, 1, status, "krb5_unparse_name");
  91
  92     fprintf (stderr, "User is `%s'\n", name);
  93     free (name);
  94
  95     krb5_data_zero (&data);
  96     krb5_data_zero (&packet);
  97
  98     n = krb5_net_read (context, &sock, &net_len, 4);
  99     if (n == 0)
 100         krb5_errx (context, 1, "EOF in krb5_net_read");
 101     if (n < 0)
 102         krb5_err (context, 1, errno, "krb5_net_read");
 103
 104     len = ntohl(net_len);
 105
 106     krb5_data_alloc (&packet, len);
 107
 108     n = krb5_net_read (context, &sock, packet.data, len);
 109     if (n == 0)
 110         krb5_errx (context, 1, "EOF in krb5_net_read");
 111     if (n < 0)
 112         krb5_err (context, 1, errno, "krb5_net_read");
 113
 114     status = krb5_rd_safe (context,
 115                            auth_context,
 116                            &packet,
 117                            &data,
 118                            NULL);
 119     if (status)
 120         krb5_err (context, 1, status, "krb5_rd_safe");
 121
 122     fprintf (stderr, "safe packet: %.*s\n", (int)data.length,
 123             (char *)data.data);
 124
 125     n = krb5_net_read (context, &sock, &net_len, 4);
 126     if (n == 0)
 127         krb5_errx (context, 1, "EOF in krb5_net_read");
 128     if (n < 0)
 129         krb5_err (context, 1, errno, "krb5_net_read");
 130
 131     len = ntohl(net_len);
 132
 133     krb5_data_alloc (&packet, len);
 134
 135     n = krb5_net_read (context, &sock, packet.data, len);
 136     if (n == 0)
 137         krb5_errx (context, 1, "EOF in krb5_net_read");
 138     if (n < 0)
 139         krb5_err (context, 1, errno, "krb5_net_read");
 140
 141     status = krb5_rd_priv (context,
 142                            auth_context,
 143                            &packet,
 144                            &data,
 145                            NULL);
 146     if (status)
 147         krb5_err (context, 1, status, "krb5_rd_priv");
 148
 149     fprintf (stderr, "priv packet: %.*s\n", (int)data.length,
 150             (char *)data.data);
 151
 152     return 0;
 153 }
 154
 155 static int
 156 doit (int port, const char *service)
 157 {
 158     mini_inetd (port);
 159
 160     return proto (STDIN_FILENO, service);
 161 }
 162
 163 int
 164 main(int argc, char **argv)
 165 {
 166     int port = server_setup(&context, argc, argv);
 167     return doit (port, service);
 168 }