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/*
* Licensed Materials - Property of IBM
*
* trousers - An open source TCG Software Stack
*
* (C) Copyright International Business Machines Corp. 2004-2006
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
#include "trousers/tss.h"
#include "trousers_types.h"
#include "trousers_types.h"
#include "tcs_tsp.h"
#include "tcs_utils.h"
#include "tcs_int_literals.h"
#include "tcsps.h"
#include "tcslog.h"
#include "tcsd_wrap.h"
#include "tcsd.h"
#include "tcs_aik.h"
void
LoadBlob_SYMMETRIC_KEY(UINT64 *offset, BYTE *blob, TCPA_SYMMETRIC_KEY *key)
{
LoadBlob_UINT32(offset, key->algId, blob);
LoadBlob_UINT16(offset, key->encScheme, blob);
LoadBlob_UINT16(offset, key->size, blob);
if (key->size > 0) {
LoadBlob(offset, key->size, blob, key->data);
} else {
key->data = NULL;
}
}
TSS_RESULT
UnloadBlob_SYMMETRIC_KEY(UINT64 *offset, BYTE *blob, TCPA_SYMMETRIC_KEY *key)
{
if (!key) {
UINT16 size;
UnloadBlob_UINT32(offset, NULL, blob);
UnloadBlob_UINT16(offset, NULL, blob);
UnloadBlob_UINT16(offset, &size, blob);
if (size > 0)
UnloadBlob(offset, size, blob, NULL);
return TSS_SUCCESS;
}
UnloadBlob_UINT32(offset, &key->algId, blob);
UnloadBlob_UINT16(offset, &key->encScheme, blob);
UnloadBlob_UINT16(offset, &key->size, blob);
if (key->size > 0) {
key->data = (BYTE *)malloc(key->size);
if (key->data == NULL) {
LogError("malloc of %hu bytes failed.", key->size);
key->size = 0;
return TCSERR(TSS_E_OUTOFMEMORY);
}
UnloadBlob(offset, key->size, blob, key->data);
} else {
key->data = NULL;
}
return TSS_SUCCESS;
}
void
get_credential(UINT32 type, UINT32 *size, BYTE **cred)
{
int rc, fd;
char *path = NULL;
void *file = NULL;
struct stat stat_buf;
size_t file_size;
switch (type) {
case TSS_TCS_CREDENTIAL_PLATFORMCERT:
path = tcsd_options.platform_cred;
break;
case TSS_TCS_CREDENTIAL_TPM_CC:
path = tcsd_options.conformance_cred;
break;
case TSS_TCS_CREDENTIAL_EKCERT:
path = tcsd_options.endorsement_cred;
break;
default:
LogDebugFn("Bad credential type");
break;
}
if (path == NULL)
goto done;
if ((fd = open(path, O_RDONLY)) < 0) {
LogError("open(%s): %s", path, strerror(errno));
goto done;
}
if ((rc = fstat(fd, &stat_buf)) == -1) {
LogError("Error stating credential: %s: %s", path, strerror(errno));
goto done;
}
file_size = (size_t)stat_buf.st_size;
LogDebugFn("%s, (%zd bytes)", path, file_size);
file = mmap(0, file_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (file == MAP_FAILED) {
LogError("Error reading credential: %s: %s", path, strerror(errno));
close(fd);
goto done;
}
close(fd);
if ((*cred = malloc(file_size)) == NULL) {
LogError("malloc of %zd bytes failed.", file_size);
munmap(file, file_size);
goto done;
}
memcpy(*cred, file, file_size);
*size = file_size;
munmap(file, file_size);
return;
done:
*cred = NULL;
*size = 0;
}
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