crypto/dist/heimdal/appl/test/nt_gss_server.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 #include <gssapi.h>
  36 #include <krb5.h>
  37 #include "nt_gss_common.h"
  38
  39 __RCSID("$Heimdal: nt_gss_server.c 12323 2003-05-21 15:15:34Z lha $"
  40         "$NetBSD$");
  41
  42 /*
  43  * This program tries to act as a server for the sample in `Sample
  44  * SSPI Code' in Windows 2000 RC1 SDK.
  45  *
  46  * use --dump-auth to get a binary dump of the authorization data in the ticket
  47  */
  48
  49 static int help_flag;
  50 static int version_flag;
  51 static char *port_str;
  52 char *service = SERVICE;
  53 static char *auth_file;
  54
  55 static struct getargs args[] = {
  56     { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
  57     { "service", 's', arg_string, &service, "service to use", "service" },
  58     { "dump-auth", 0, arg_string, &auth_file, "dump authorization data",
  59       "file" },
  60     { "help", 'h', arg_flag, &help_flag },
  61     { "version", 0, arg_flag, &version_flag }
  62 };
  63
  64 static int num_args = sizeof(args) / sizeof(args[0]);
  65
  66 static int
  67 proto (int sock, const char *service)
  68 {
  69     struct sockaddr_in remote, local;
  70     socklen_t addrlen;
  71     gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
  72     gss_buffer_t input_token, output_token;
  73     gss_buffer_desc real_input_token, real_output_token;
  74     OM_uint32 maj_stat, min_stat;
  75     gss_name_t client_name;
  76     gss_buffer_desc name_token;
  77
  78     addrlen = sizeof(local);
  79     if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
  80         || addrlen != sizeof(local))
  81         err (1, "getsockname)");
  82
  83     addrlen = sizeof(remote);
  84     if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
  85         || addrlen != sizeof(remote))
  86         err (1, "getpeername");
  87
  88     input_token = &real_input_token;
  89     output_token = &real_output_token;
  90
  91     do {
  92         nt_read_token (sock, input_token);
  93         maj_stat =
  94             gss_accept_sec_context (&min_stat,
  95                                     &context_hdl,
  96                                     GSS_C_NO_CREDENTIAL,
  97                                     input_token,
  98                                     GSS_C_NO_CHANNEL_BINDINGS,
  99                                     &client_name,
 100                                     NULL,
 101                                     output_token,
 102                                     NULL,
 103                                     NULL,
 104                                     NULL);
 105         if(GSS_ERROR(maj_stat))
 106             gss_err (1, min_stat, "gss_accept_sec_context");
 107         if (output_token->length != 0)
 108             nt_write_token (sock, output_token);
 109         if (GSS_ERROR(maj_stat)) {
 110             if (context_hdl != GSS_C_NO_CONTEXT)
 111                 gss_delete_sec_context (&min_stat,
 112                                         &context_hdl,
 113                                         GSS_C_NO_BUFFER);
 114             break;
 115         }
 116     } while(maj_stat & GSS_S_CONTINUE_NEEDED);
 117
 118     if (auth_file != NULL) {
 119         int fd = open (auth_file, O_WRONLY | O_CREAT, 0666);
 120 #if 0
 121         krb5_ticket *ticket;
 122         krb5_data *data;
 123
 124         ticket = context_hdl->ticket;
 125         data = &ticket->ticket.authorization_data->val[0].ad_data;
 126
 127         if(fd < 0)
 128             err (1, "open %s", auth_file);
 129         if (write (fd, data->data, data->length) != data->length)
 130             errx (1, "write to %s failed", auth_file);
 131 #endif
 132         if (close (fd))
 133             err (1, "close %s", auth_file);
 134     }
 135
 136     maj_stat = gss_display_name (&min_stat,
 137                                  client_name,
 138                                  &name_token,
 139                                  NULL);
 140     if (GSS_ERROR(maj_stat))
 141         gss_err (1, min_stat, "gss_display_name");
 142
 143     fprintf (stderr, "User is `%.*s'\n", (int)name_token.length,
 144             (char *)name_token.value);
 145
 146     /* write something back */
 147
 148     output_token->value  = strdup ("hejsan");
 149     output_token->length = strlen (output_token->value) + 1;
 150     nt_write_token (sock, output_token);
 151
 152     output_token->value  = strdup ("hoppsan");
 153     output_token->length = strlen (output_token->value) + 1;
 154     nt_write_token (sock, output_token);
 155
 156     return 0;
 157 }
 158
 159 static int
 160 doit (int port, const char *service)
 161 {
 162     int sock, sock2;
 163     struct sockaddr_in my_addr;
 164     int one = 1;
 165
 166     sock = socket (AF_INET, SOCK_STREAM, 0);
 167     if (sock < 0)
 168         err (1, "socket");
 169
 170     memset (&my_addr, 0, sizeof(my_addr));
 171     my_addr.sin_family      = AF_INET;
 172     my_addr.sin_port        = port;
 173     my_addr.sin_addr.s_addr = INADDR_ANY;
 174
 175     if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
 176                     (void *)&one, sizeof(one)) < 0)
 177         warn ("setsockopt SO_REUSEADDR");
 178
 179     if (bind (sock, (struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
 180         err (1, "bind");
 181
 182     if (listen (sock, 1) < 0)
 183         err (1, "listen");
 184
 185     sock2 = accept (sock, NULL, NULL);
 186     if (sock2 < 0)
 187         err (1, "accept");
 188
 189     return proto (sock2, service);
 190 }
 191
 192 static void
 193 usage(int code, struct getargs *args, int num_args)
 194 {
 195     arg_printusage(args, num_args, NULL, "");
 196     exit(code);
 197 }
 198
 199 static int
 200 common_setup(krb5_context *context, int *argc, char **argv,
 201              void (*usage)(int, struct getargs*, int))
 202 {
 203     int port = 0;
 204     *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
 205
 206     if(help_flag)
 207         (*usage)(0, args, num_args);
 208     if(version_flag) {
 209         print_version(NULL);
 210         exit(0);
 211     }
 212
 213     if(port_str){
 214         struct servent *s = roken_getservbyname(port_str, "tcp");
 215         if(s)
 216             port = s->s_port;
 217         else {
 218             char *ptr;
 219
 220             port = strtol (port_str, &ptr, 10);
 221             if (port == 0 && ptr == port_str)
 222                 errx (1, "Bad port `%s'", port_str);
 223             port = htons(port);
 224         }
 225     }
 226
 227     if (port == 0)
 228         port = krb5_getportbyname (*context, PORT, "tcp", 4711);
 229
 230     return port;
 231 }
 232
 233 static int
 234 setup(krb5_context *context, int argc, char **argv)
 235 {
 236     int port = common_setup(context, &argc, argv, usage);
 237     if(argv[argc] != NULL)
 238         usage(1, args, num_args);
 239     return port;
 240 }
 241
 242 int
 243 main(int argc, char **argv)
 244 {
 245     krb5_context context = NULL; /* XXX */
 246     int port = setup(&context, argc, argv);
 247     return doit (port, service);
 248 }