| /* |
| * Copyright (c) 2015 - 2018 Intel Corporation |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 <inttypes.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include "tcti/common.h" |
| #include "sapi/tpm20.h" |
| #include "tcti.h" |
| #define LOGMODULE tcti |
| #include "log/log.h" |
| |
| TSS2_RC tcti_common_checks ( |
| TSS2_TCTI_CONTEXT *tcti_context |
| ) |
| { |
| TSS2_TCTI_CONTEXT_INTEL *tcti_intel; |
| |
| tcti_intel = tcti_context_intel_cast (tcti_context); |
| if (tcti_context == NULL) { |
| return TSS2_TCTI_RC_BAD_REFERENCE; |
| } |
| if (tcti_intel->magic != TCTI_MAGIC || |
| tcti_intel->version != TCTI_VERSION) { |
| return TSS2_TCTI_RC_BAD_CONTEXT; |
| } |
| |
| return TSS2_RC_SUCCESS; |
| } |
| |
| TSS2_RC tcti_send_checks ( |
| TSS2_TCTI_CONTEXT *tctiContext, |
| const uint8_t *command_buffer |
| ) |
| { |
| TSS2_TCTI_CONTEXT_INTEL *tcti_intel; |
| TSS2_RC rc; |
| |
| tcti_intel = tcti_context_intel_cast (tctiContext);; |
| rc = tcti_common_checks (tctiContext); |
| if (rc != TSS2_RC_SUCCESS) { |
| return rc; |
| } |
| if (command_buffer == NULL) { |
| return TSS2_TCTI_RC_BAD_REFERENCE; |
| } |
| if (tcti_intel->previousStage == TCTI_STAGE_SEND_COMMAND) { |
| return TSS2_TCTI_RC_BAD_SEQUENCE; |
| } |
| |
| return TSS2_RC_SUCCESS; |
| } |
| |
| TSS2_RC tcti_receive_checks ( |
| TSS2_TCTI_CONTEXT *tctiContext, |
| size_t *response_size, |
| unsigned char *response_buffer |
| ) |
| { |
| TSS2_TCTI_CONTEXT_INTEL *tcti_intel; |
| TSS2_RC rc; |
| |
| tcti_intel = tcti_context_intel_cast (tctiContext); |
| rc = tcti_common_checks (tctiContext); |
| if (rc != TSS2_RC_SUCCESS) { |
| return rc; |
| } |
| if (response_buffer == NULL || response_size == NULL) { |
| return TSS2_TCTI_RC_BAD_REFERENCE; |
| } |
| if (tcti_intel->previousStage == TCTI_STAGE_RECEIVE_RESPONSE) { |
| return TSS2_TCTI_RC_BAD_SEQUENCE; |
| } |
| |
| return TSS2_RC_SUCCESS; |
| } |
| |
| ssize_t write_all ( |
| int fd, |
| const uint8_t *buf, |
| size_t size) |
| { |
| ssize_t written = 0; |
| size_t written_total = 0; |
| |
| do { |
| LOG_DEBUG("writing %zu bytes starting at 0x%" PRIxPTR " to fd %d", |
| size - written_total, |
| (uintptr_t)buf + written_total, |
| fd); |
| written = TEMP_RETRY (write (fd, |
| (const char*)&buf [written_total], |
| size - written_total)); |
| if (written >= 0) { |
| LOG_DEBUG ("wrote %zd bytes to fd %d", written, fd); |
| written_total += (size_t)written; |
| } else { |
| LOG_ERROR ("failed to write to fd %d: %s", fd, strerror (errno)); |
| return written_total; |
| } |
| } while (written_total < size); |
| |
| return (ssize_t)written_total; |
| } |