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178 lines
6.1 KiB
C
178 lines
6.1 KiB
C
// ===================================================================
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//
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// Copyright (c) 2005, Intel Corp.
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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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// * 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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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Intel Corporation nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// 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,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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// OF THE POSSIBILITY OF SUCH DAMAGE.
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// ===================================================================
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#include <stdlib.h>
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#include <string.h>
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#include "tcg.h"
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#include "bsg.h"
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#include "log.h"
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#include "vtpm_migrator.h"
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#include "vtpm_manager.h"
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#define VTPM_SH_CMD_HDR "bash -c \"cd /etc/xen/scripts; source /etc/xen/scripts/vtpm-common.sh;"
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#define VTPM_SH_CMD_FTR "\""
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#define VTPM_SH_GETINST "vtpmdb_get_free_instancenum"
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#define VTPM_SH_ADD "vtpm_add_and_activate"
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#define VTPM_SH_RESUME "vtpm_resume"
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// This must be updated to the longest command name. Currently GETINST
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#define VTPM_SH_CMD_SIZE (strlen(VTPM_SH_CMD_HDR) + strlen(VTPM_SH_CMD_FTR) + 1 + strlen(VTPM_SH_GETINST) + 2)
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void handle_vtpm_mig_step2(buffer_t *in_param_buf, buffer_t *result_buf)
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{
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TPM_TAG tag = VTPM_TAG_RSP;
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buffer_t out_param_buf= NULL_BUF, mig_key_buf=NULL_BUF;
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TPM_RESULT status=TPM_SUCCESS, cmd_status;
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UINT32 out_param_size;
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if ( (!in_param_buf) || (!result_buf) ) {
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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// ================= Call manager and get mig key ===============
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TPMTRYRETURN( vtpm_manager_open() );
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TPMTRYRETURN( vtpm_manager_command(VTPM_ORD_GET_MIG_KEY,
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&out_param_buf, // Empty
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&cmd_status,
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&mig_key_buf) );
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vtpm_manager_close();
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TPMTRYRETURN(cmd_status);
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// ==================== return the mig key =====================
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out_param_size = VTPM_COMMAND_HEADER_SIZE + buffer_len(&mig_key_buf);
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TPMTRYRETURN( buffer_init(result_buf,
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out_param_size,
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NULL) );
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BSG_PackList( result_buf->bytes, 3,
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BSG_TPM_TAG, &tag,
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BSG_TYPE_UINT32, &out_param_size,
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BSG_TPM_RESULT, &status);
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memcpy(result_buf->bytes + VTPM_COMMAND_HEADER_SIZE,
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mig_key_buf.bytes, buffer_len(&mig_key_buf));
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goto egress;
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abort_egress:
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buffer_free(result_buf);
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build_error_msg(result_buf, status);
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egress:
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return;
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}
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void handle_vtpm_mig_step3(buffer_t *in_param_buf, buffer_t *result_buf)
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{
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TPM_TAG tag = VTPM_TAG_RSP;
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buffer_t out_param_buf= NULL_BUF, mig_key_buf=NULL_BUF, empty_buf=NULL_BUF;
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TPM_RESULT status=TPM_SUCCESS, cmd_status;
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UINT32 out_param_size, instance;
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char *shell_cmd_str=NULL;
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size_t shell_cmd_strlen;
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FILE *shell_f=NULL;
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if ( (!in_param_buf) || (!result_buf) ) {
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status = TPM_BAD_PARAMETER;
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goto abort_egress;
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}
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// ================= Read Parameters ===============
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struct pack_buf_t name_data32, state_data32;
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BSG_UnpackList(in_param_buf->bytes, 2,
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BSG_TPM_SIZE32_DATA, &name_data32,
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BSG_TPM_SIZE32_DATA, &state_data32);
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// Before using this string, protect us from a non-null term array.
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if (name_data32.data[name_data32.size -1] != 0x00) {
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name_data32.data[name_data32.size -1] = 0x00;
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}
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// ====== Call hotplug-script and get an instance ======
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shell_cmd_strlen = VTPM_SH_CMD_SIZE + name_data32.size + 10;
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shell_cmd_str = (char *) malloc(shell_cmd_strlen); // 10 is just padding for the UINT32
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snprintf(shell_cmd_str, shell_cmd_strlen,
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VTPM_SH_CMD_HDR VTPM_SH_GETINST VTPM_SH_CMD_FTR);
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shell_f = popen(shell_cmd_str, "r");
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fscanf(shell_f, "%d", &instance);
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pclose(shell_f);
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// ====== Call hotplug-script and add instance ======
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snprintf(shell_cmd_str, shell_cmd_strlen,
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VTPM_SH_CMD_HDR VTPM_SH_ADD " %s %d" VTPM_SH_CMD_FTR,
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name_data32.data, instance);
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system(shell_cmd_str);
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// ========= Call vtpm_manager and load VTPM =======
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TPMTRYRETURN( buffer_init( &out_param_buf,
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2*sizeof(UINT32) + state_data32.size,
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NULL) );
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BSG_PackList(out_param_buf.bytes, 2,
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BSG_TYPE_UINT32, &instance,
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BSG_TPM_SIZE32_DATA, &state_data32);
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TPMTRYRETURN( vtpm_manager_open() );
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TPMTRYRETURN( vtpm_manager_command(VTPM_ORD_MIGRATE_IN,
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&out_param_buf,
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&cmd_status,
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&empty_buf) );
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vtpm_manager_close();
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TPMTRYRETURN(cmd_status);
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// ====== Call hotplug-script and resume instance ======
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snprintf(shell_cmd_str, shell_cmd_strlen,
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VTPM_SH_CMD_HDR VTPM_SH_RESUME " %d" VTPM_SH_CMD_FTR, instance);
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system(shell_cmd_str);
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goto egress;
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abort_egress:
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egress:
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free(shell_cmd_str);
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// In this case no params come back, so reuse build_error_msg even for succes.
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build_error_msg(result_buf, status);
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return;
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}
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