crypto/dist/heimdal/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("$Heimdal: tcp_server.c 17954 2006-09-01 09:01:03Z lha $"
  36         "$NetBSD$");
  37
  38 krb5_context context;
  39
  40 static int
  41 proto (int sock, const char *service)
  42 {
  43     krb5_auth_context auth_context;
  44     krb5_error_code status;
  45     krb5_principal server;
  46     krb5_ticket *ticket;
  47     char *name;
  48     char hostname[MAXHOSTNAMELEN];
  49     krb5_data packet;
  50     krb5_data data;
  51     uint32_t len, net_len;
  52     ssize_t n;
  53
  54     status = krb5_auth_con_init (context, &auth_context);
  55     if (status)
  56         krb5_err (context, 1, status, "krb5_auth_con_init");
  57
  58     status = krb5_auth_con_setaddrs_from_fd (context,
  59                                              auth_context,
  60                                              &sock);
  61
  62     if (status)
  63         krb5_err (context, 1, status, "krb5_auth_con_setaddrs_from_fd");
  64
  65     if(gethostname (hostname, sizeof(hostname)) < 0)
  66         krb5_err (context, 1, errno, "gethostname");
  67
  68     status = krb5_sname_to_principal (context,
  69                                       hostname,
  70                                       service,
  71                                       KRB5_NT_SRV_HST,
  72                                       &server);
  73     if (status)
  74         krb5_err (context, 1, status, "krb5_sname_to_principal");
  75
  76     status = krb5_recvauth (context,
  77                             &auth_context,
  78                             &sock,
  79                             VERSION,
  80                             server,
  81                             0,
  82                             keytab,
  83                             &ticket);
  84     if (status)
  85         krb5_err (context, 1, status, "krb5_recvauth");
  86
  87     status = krb5_unparse_name (context,
  88                                 ticket->client,
  89                                 &name);
  90     if (status)
  91         krb5_err (context, 1, status, "krb5_unparse_name");
  92
  93     fprintf (stderr, "User is `%s'\n", name);
  94     free (name);
  95
  96     krb5_data_zero (&data);
  97     krb5_data_zero (&packet);
  98
  99     n = krb5_net_read (context, &sock, &net_len, 4);
 100     if (n == 0)
 101         krb5_errx (context, 1, "EOF in krb5_net_read");
 102     if (n < 0)
 103         krb5_err (context, 1, errno, "krb5_net_read");
 104
 105     len = ntohl(net_len);
 106
 107     krb5_data_alloc (&packet, len);
 108
 109     n = krb5_net_read (context, &sock, packet.data, len);
 110     if (n == 0)
 111         krb5_errx (context, 1, "EOF in krb5_net_read");
 112     if (n < 0)
 113         krb5_err (context, 1, errno, "krb5_net_read");
 114
 115     status = krb5_rd_safe (context,
 116                            auth_context,
 117                            &packet,
 118                            &data,
 119                            NULL);
 120     if (status)
 121         krb5_err (context, 1, status, "krb5_rd_safe");
 122
 123     fprintf (stderr, "safe packet: %.*s\n", (int)data.length,
 124             (char *)data.data);
 125
 126     n = krb5_net_read (context, &sock, &net_len, 4);
 127     if (n == 0)
 128         krb5_errx (context, 1, "EOF in krb5_net_read");
 129     if (n < 0)
 130         krb5_err (context, 1, errno, "krb5_net_read");
 131
 132     len = ntohl(net_len);
 133
 134     krb5_data_alloc (&packet, len);
 135
 136     n = krb5_net_read (context, &sock, packet.data, len);
 137     if (n == 0)
 138         krb5_errx (context, 1, "EOF in krb5_net_read");
 139     if (n < 0)
 140         krb5_err (context, 1, errno, "krb5_net_read");
 141
 142     status = krb5_rd_priv (context,
 143                            auth_context,
 144                            &packet,
 145                            &data,
 146                            NULL);
 147     if (status)
 148         krb5_err (context, 1, status, "krb5_rd_priv");
 149
 150     fprintf (stderr, "priv packet: %.*s\n", (int)data.length,
 151             (char *)data.data);
 152
 153     return 0;
 154 }
 155
 156 static int
 157 doit (int port, const char *service)
 158 {
 159     mini_inetd (port);
 160
 161     return proto (STDIN_FILENO, service);
 162 }
 163
 164 int
 165 main(int argc, char **argv)
 166 {
 167     int port = server_setup(&context, argc, argv);
 168     return doit (port, service);
 169 }