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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2016 Toomas Soome <tsoome@me.com>
*/
/*
* Create sha1 hash for file.
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <security/cryptoki.h>
#include <cryptoutil.h>
#include <locale.h>
#include "bootadm.h"
#define BUFFERSIZE (1024 * 64)
#define RESULTLEN (512)
static CK_BYTE buf[BUFFERSIZE];
/*
* do_digest - Compute digest of a file. Borrowed from digest.
*
* hSession - session
* pmech - ptr to mechanism to be used for digest
* fd - file descriptor
* pdigest - buffer where digest result is returned
* pdigestlen - length of digest buffer on input,
* length of result on output
*/
static CK_RV
do_digest(CK_SESSION_HANDLE hSession, CK_MECHANISM_PTR pmech,
int fd, CK_BYTE_PTR *pdigest, CK_ULONG_PTR pdigestlen)
{
CK_RV rv;
ssize_t nread;
int err;
if ((rv = C_DigestInit(hSession, pmech)) != CKR_OK) {
return (rv);
}
while ((nread = read(fd, buf, sizeof (buf))) > 0) {
/* Get the digest */
rv = C_DigestUpdate(hSession, buf, (CK_ULONG)nread);
if (rv != CKR_OK)
return (rv);
}
/* There was a read error */
if (nread == -1) {
err = errno;
bam_print(gettext("error reading file: %s\n"), strerror(err));
return (CKR_GENERAL_ERROR);
}
rv = C_DigestFinal(hSession, *pdigest, pdigestlen);
/* result too big to fit? Allocate a bigger buffer */
if (rv == CKR_BUFFER_TOO_SMALL) {
*pdigest = realloc(*pdigest, *pdigestlen);
if (*pdigest == NULL) {
err = errno;
bam_print(gettext("realloc: %s\n"), strerror(err));
return (CKR_HOST_MEMORY);
}
rv = C_DigestFinal(hSession, *pdigest, pdigestlen);
}
return (rv);
}
int
bootadm_digest(const char *filename, char **result)
{
int fd;
CK_RV rv;
CK_ULONG slotcount;
CK_SLOT_ID slotID;
CK_SLOT_ID_PTR pSlotList = NULL;
CK_MECHANISM_TYPE mech_type = CKM_SHA_1;
CK_MECHANISM_INFO info;
CK_MECHANISM mech;
CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
CK_BYTE_PTR resultbuf = NULL;
CK_ULONG resultlen;
char *resultstr = NULL;
int resultstrlen;
int i, exitcode;
/* Initialize, and get list of slots */
rv = C_Initialize(NULL);
if (rv != CKR_OK && rv != CKR_CRYPTOKI_ALREADY_INITIALIZED) {
bam_print(gettext(
"failed to initialize PKCS #11 framework: %s\n"),
pkcs11_strerror(rv));
return (BAM_ERROR);
}
/* Get slot count */
rv = C_GetSlotList(0, NULL, &slotcount);
if (rv != CKR_OK || slotcount == 0) {
bam_print(gettext(
"failed to find any cryptographic provider: %s\n"),
pkcs11_strerror(rv));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Found at least one slot, allocate memory for slot list */
pSlotList = malloc(slotcount * sizeof (CK_SLOT_ID));
if (pSlotList == NULL) {
bam_print(gettext("out of memory\n"));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Get the list of slots */
if ((rv = C_GetSlotList(0, pSlotList, &slotcount)) != CKR_OK) {
bam_print(gettext(
"failed to find any cryptographic provider; "
"please check with your system administrator: %s\n"),
pkcs11_strerror(rv));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Find a slot with matching mechanism */
for (i = 0; i < slotcount; i++) {
slotID = pSlotList[i];
rv = C_GetMechanismInfo(slotID, mech_type, &info);
if (rv != CKR_OK) {
continue; /* to the next slot */
} else {
if (info.flags & CKF_DIGEST)
break;
}
}
/* Show error if no matching mechanism found */
if (i == slotcount) {
bam_print(gettext("no cryptographic provider was "
"found for sha1\n"));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Mechanism is supported. Go ahead & open a session */
rv = C_OpenSession(slotID, CKF_SERIAL_SESSION,
NULL, NULL, &hSession);
if (rv != CKR_OK) {
bam_print(gettext("can not open PKCS#11 session: %s\n"),
pkcs11_strerror(rv));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Allocate a buffer to store result. */
resultlen = RESULTLEN;
if ((resultbuf = malloc(resultlen)) == NULL) {
bam_print(gettext("out of memory\n"));
exitcode = BAM_ERROR;
goto cleanup;
}
mech.mechanism = mech_type;
mech.pParameter = NULL;
mech.ulParameterLen = 0;
exitcode = BAM_SUCCESS;
if ((fd = open(filename, O_RDONLY | O_NONBLOCK)) == -1) {
bam_print(gettext("can not open input file %s\n"), filename);
exitcode = BAM_ERROR;
goto cleanup;
}
rv = do_digest(hSession, &mech, fd, &resultbuf, &resultlen);
if (rv != CKR_OK) {
bam_print(gettext("crypto operation failed for "
"file %s: %s\n"), filename, pkcs11_strerror(rv));
exitcode = BAM_ERROR;
goto cleanup;
}
/* Allocate a buffer to store result string */
resultstrlen = 2 * resultlen + 1;
if ((resultstr = malloc(resultstrlen)) == NULL) {
bam_print(gettext("out of memory\n"));
exitcode = BAM_ERROR;
goto cleanup;
}
tohexstr(resultbuf, resultlen, resultstr, resultstrlen);
(void) close(fd);
cleanup:
if (exitcode == BAM_ERROR) {
free(resultstr);
resultstr = NULL;
}
free(resultbuf);
free(pSlotList);
if (hSession != CK_INVALID_HANDLE)
(void) C_CloseSession(hSession);
(void) C_Finalize(NULL);
*result = resultstr;
return (exitcode);
}
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