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