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/*
* Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "test_locl.h"
#include <gssapi.h>
#include <krb5.h>
#include "nt_gss_common.h"
RCSID("$Id: nt_gss_server.c,v 1.5 2000/08/09 20:53:07 assar Exp $");
/*
* This program tries to act as a server for the sample in `Sample
* SSPI Code' in Windows 2000 RC1 SDK.
*
* use --dump-auth to get a binary dump of the authorization data in the ticket
*/
static int help_flag;
static int version_flag;
static char *port_str;
char *service = SERVICE;
static char *auth_file;
static struct getargs args[] = {
{ "port", 'p', arg_string, &port_str, "port to listen to", "port" },
{ "service", 's', arg_string, &service, "service to use", "service" },
{ "dump-auth", 0, arg_string, &auth_file, "dump authorization data",
"file" },
{ "help", 'h', arg_flag, &help_flag },
{ "version", 0, arg_flag, &version_flag }
};
static int num_args = sizeof(args) / sizeof(args[0]);
static int
proto (int sock, const char *service)
{
struct sockaddr_in remote, local;
socklen_t addrlen;
gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
gss_buffer_t input_token, output_token;
gss_buffer_desc real_input_token, real_output_token;
OM_uint32 maj_stat, min_stat;
gss_name_t client_name;
gss_buffer_desc name_token;
addrlen = sizeof(local);
if (getsockname (sock, (struct sockaddr *)&local, &addrlen) < 0
|| addrlen != sizeof(local))
err (1, "getsockname)");
addrlen = sizeof(remote);
if (getpeername (sock, (struct sockaddr *)&remote, &addrlen) < 0
|| addrlen != sizeof(remote))
err (1, "getpeername");
input_token = &real_input_token;
output_token = &real_output_token;
do {
nt_read_token (sock, input_token);
maj_stat =
gss_accept_sec_context (&min_stat,
&context_hdl,
GSS_C_NO_CREDENTIAL,
input_token,
GSS_C_NO_CHANNEL_BINDINGS,
&client_name,
NULL,
output_token,
NULL,
NULL,
NULL);
if(GSS_ERROR(maj_stat))
gss_err (1, min_stat, "gss_accept_sec_context");
if (output_token->length != 0)
nt_write_token (sock, output_token);
if (GSS_ERROR(maj_stat)) {
if (context_hdl != GSS_C_NO_CONTEXT)
gss_delete_sec_context (&min_stat,
&context_hdl,
GSS_C_NO_BUFFER);
break;
}
} while(maj_stat & GSS_S_CONTINUE_NEEDED);
if (auth_file != NULL) {
int fd = open (auth_file, O_WRONLY | O_CREAT, 0666);
krb5_ticket *ticket = context_hdl->ticket;
krb5_data *data = &ticket->ticket.authorization_data->val[0].ad_data;
if(fd < 0)
err (1, "open %s", auth_file);
if (write (fd, data->data, data->length) != data->length)
errx (1, "write to %s failed", auth_file);
if (close (fd))
err (1, "close %s", auth_file);
}
maj_stat = gss_display_name (&min_stat,
client_name,
&name_token,
NULL);
if (GSS_ERROR(maj_stat))
gss_err (1, min_stat, "gss_display_name");
fprintf (stderr, "User is `%.*s'\n", (int)name_token.length,
(char *)name_token.value);
/* write something back */
output_token->value = strdup ("hejsan");
output_token->length = strlen (output_token->value) + 1;
nt_write_token (sock, output_token);
output_token->value = strdup ("hoppsan");
output_token->length = strlen (output_token->value) + 1;
nt_write_token (sock, output_token);
return 0;
}
static int
doit (int port, const char *service)
{
int sock, sock2;
struct sockaddr_in my_addr;
int one = 1;
sock = socket (AF_INET, SOCK_STREAM, 0);
if (sock < 0)
err (1, "socket");
memset (&my_addr, 0, sizeof(my_addr));
my_addr.sin_family = AF_INET;
my_addr.sin_port = port;
my_addr.sin_addr.s_addr = INADDR_ANY;
if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
(void *)&one, sizeof(one)) < 0)
warn ("setsockopt SO_REUSEADDR");
if (bind (sock, (struct sockaddr *)&my_addr, sizeof(my_addr)) < 0)
err (1, "bind");
if (listen (sock, 1) < 0)
err (1, "listen");
sock2 = accept (sock, NULL, NULL);
if (sock2 < 0)
err (1, "accept");
return proto (sock2, service);
}
static void
usage(int code, struct getargs *args, int num_args)
{
arg_printusage(args, num_args, NULL, "");
exit(code);
}
static int
common_setup(krb5_context *context, int *argc, char **argv,
void (*usage)(int, struct getargs*, int))
{
int port = 0;
*argc = krb5_program_setup(context, *argc, argv, args, num_args, usage);
if(help_flag)
(*usage)(0, args, num_args);
if(version_flag) {
print_version(NULL);
exit(0);
}
if(port_str){
struct servent *s = roken_getservbyname(port_str, "tcp");
if(s)
port = s->s_port;
else {
char *ptr;
port = strtol (port_str, &ptr, 10);
if (port == 0 && ptr == port_str)
errx (1, "Bad port `%s'", port_str);
port = htons(port);
}
}
if (port == 0)
port = krb5_getportbyname (*context, PORT, "tcp", 4711);
return port;
}
static int
setup(krb5_context *context, int argc, char **argv)
{
int port = common_setup(context, &argc, argv, usage);
if(argv[argc] != NULL)
usage(1, args, num_args);
return port;
}
int
main(int argc, char **argv)
{
krb5_context context = NULL; /* XXX */
int port = setup(&context, argc, argv);
return doit (port, service);
}
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