249 lines
7.2 KiB
C
249 lines
7.2 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 "gss_common.h"
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RCSID("$Id: gssapi_client.c 21521 2007-07-12 13:13:40Z lha $");
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static int
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do_trans (int sock, gss_ctx_id_t context_hdl)
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{
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OM_uint32 maj_stat, min_stat;
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gss_buffer_desc real_input_token, real_output_token;
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gss_buffer_t input_token = &real_input_token,
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output_token = &real_output_token;
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/* get_mic */
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input_token->length = 3;
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input_token->value = strdup("hej");
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maj_stat = gss_get_mic(&min_stat,
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context_hdl,
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GSS_C_QOP_DEFAULT,
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input_token,
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output_token);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_get_mic");
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write_token (sock, input_token);
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write_token (sock, output_token);
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/* wrap */
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input_token->length = 7;
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input_token->value = "hemligt";
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maj_stat = gss_wrap (&min_stat,
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context_hdl,
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0,
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GSS_C_QOP_DEFAULT,
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input_token,
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NULL,
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output_token);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_wrap");
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write_token (sock, output_token);
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maj_stat = gss_wrap (&min_stat,
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context_hdl,
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1,
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GSS_C_QOP_DEFAULT,
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input_token,
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NULL,
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output_token);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_wrap");
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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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proto (int sock, const char *hostname, 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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int context_established = 0;
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gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
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gss_buffer_desc real_input_token, real_output_token;
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gss_buffer_t input_token = &real_input_token,
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output_token = &real_output_token;
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OM_uint32 maj_stat, min_stat;
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gss_name_t server;
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gss_buffer_desc name_token;
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struct gss_channel_bindings_struct input_chan_bindings;
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u_char init_buf[4];
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u_char acct_buf[4];
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gss_OID mech_oid;
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char *str;
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mech_oid = select_mech(mech);
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name_token.length = asprintf (&str,
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"%s@%s", service, hostname);
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if (str == NULL)
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errx(1, "malloc - out of memory");
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name_token.value = str;
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maj_stat = gss_import_name (&min_stat,
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&name_token,
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GSS_C_NT_HOSTBASED_SERVICE,
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&server);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat,
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"Error importing name `%s@%s':\n", service, hostname);
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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(%s)", hostname);
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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(%s)", hostname);
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input_token->length = 0;
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output_token->length = 0;
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input_chan_bindings.initiator_addrtype = GSS_C_AF_INET;
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input_chan_bindings.initiator_address.length = 4;
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init_buf[0] = (local.sin_addr.s_addr >> 24) & 0xFF;
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init_buf[1] = (local.sin_addr.s_addr >> 16) & 0xFF;
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init_buf[2] = (local.sin_addr.s_addr >> 8) & 0xFF;
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init_buf[3] = (local.sin_addr.s_addr >> 0) & 0xFF;
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input_chan_bindings.initiator_address.value = init_buf;
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input_chan_bindings.acceptor_addrtype = GSS_C_AF_INET;
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input_chan_bindings.acceptor_address.length = 4;
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acct_buf[0] = (remote.sin_addr.s_addr >> 24) & 0xFF;
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acct_buf[1] = (remote.sin_addr.s_addr >> 16) & 0xFF;
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acct_buf[2] = (remote.sin_addr.s_addr >> 8) & 0xFF;
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acct_buf[3] = (remote.sin_addr.s_addr >> 0) & 0xFF;
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input_chan_bindings.acceptor_address.value = acct_buf;
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#if 0
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input_chan_bindings.application_data.value = emalloc(4);
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* (unsigned short*)input_chan_bindings.application_data.value = local.sin_port;
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* ((unsigned short *)input_chan_bindings.application_data.value + 1) = remote.sin_port;
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input_chan_bindings.application_data.length = 4;
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#else
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input_chan_bindings.application_data.length = 0;
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input_chan_bindings.application_data.value = NULL;
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#endif
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while(!context_established) {
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maj_stat =
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gss_init_sec_context(&min_stat,
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GSS_C_NO_CREDENTIAL,
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&context_hdl,
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server,
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mech_oid,
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GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG
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| GSS_C_DELEG_FLAG,
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0,
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&input_chan_bindings,
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input_token,
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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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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_init_sec_context");
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if (output_token->length != 0)
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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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if (maj_stat & GSS_S_CONTINUE_NEEDED) {
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read_token (sock, input_token);
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} else {
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context_established = 1;
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}
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}
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if (fork_flag) {
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pid_t pid;
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int pipefd[2];
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if (pipe (pipefd) < 0)
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err (1, "pipe");
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pid = fork ();
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if (pid < 0)
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err (1, "fork");
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if (pid != 0) {
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gss_buffer_desc buf;
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maj_stat = gss_export_sec_context (&min_stat,
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&context_hdl,
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&buf);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_export_sec_context");
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write_token (pipefd[1], &buf);
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exit (0);
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} else {
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gss_ctx_id_t context_hdl;
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gss_buffer_desc buf;
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close (pipefd[1]);
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read_token (pipefd[0], &buf);
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close (pipefd[0]);
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maj_stat = gss_import_sec_context (&min_stat, &buf, &context_hdl);
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if (GSS_ERROR(maj_stat))
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gss_err (1, min_stat, "gss_import_sec_context");
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gss_release_buffer (&min_stat, &buf);
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return do_trans (sock, context_hdl);
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}
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} else {
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return do_trans (sock, context_hdl);
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}
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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; /* XXX */
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int port = client_setup(&context, &argc, argv);
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return client_doit (argv[argc], port, service, proto);
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}
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