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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef FREEBL_NO_DEPEND
#include "stubs.h"
#endif
#include "prtypes.h"
#include "prenv.h"
#include "secerr.h"
#include "blapi.h"
#include "hasht.h"
#include "plhash.h"
#include "nsslowhash.h"
#include "blapii.h"
struct NSSLOWInitContextStr {
int count;
};
struct NSSLOWHASHContextStr {
const SECHashObject *hashObj;
void *hashCtxt;
};
#ifndef NSS_FIPS_DISABLED
static int
nsslow_GetFIPSEnabled(void)
{
#ifdef LINUX
FILE *f;
char d;
size_t size;
const char *env;
env = PR_GetEnvSecure("NSS_FIPS");
if (env && (*env == 'y' || *env == 'f' || *env == '1' || *env == 't')) {
return 1;
}
f = fopen("/proc/sys/crypto/fips_enabled", "r");
if (!f)
return 0;
size = fread(&d, 1, 1, f);
fclose(f);
if (size != 1)
return 0;
if (d != '1')
return 0;
#endif /* LINUX */
return 1;
}
#endif /* NSS_FIPS_DISABLED */
static NSSLOWInitContext dummyContext = { 0 };
static PRBool post_failed = PR_TRUE;
NSSLOWInitContext *
NSSLOW_Init(void)
{
#ifdef FREEBL_NO_DEPEND
(void)FREEBL_InitStubs();
#endif
#ifndef NSS_FIPS_DISABLED
/* make sure the FIPS product is installed if we are trying to
* go into FIPS mode */
if (nsslow_GetFIPSEnabled()) {
if (BL_FIPSEntryOK(PR_TRUE, PR_FALSE) != SECSuccess) {
PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
post_failed = PR_TRUE;
return NULL;
}
}
#endif
post_failed = PR_FALSE;
return &dummyContext;
}
void
NSSLOW_Shutdown(NSSLOWInitContext *context)
{
PORT_Assert(context == &dummyContext);
return;
}
void
NSSLOW_Reset(NSSLOWInitContext *context)
{
PORT_Assert(context == &dummyContext);
return;
}
NSSLOWHASHContext *
NSSLOWHASH_NewContext(NSSLOWInitContext *initContext,
HASH_HashType hashType)
{
NSSLOWHASHContext *context;
if (post_failed) {
PORT_SetError(SEC_ERROR_PKCS11_DEVICE_ERROR);
return NULL;
}
if (initContext != &dummyContext) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return (NULL);
}
context = PORT_ZNew(NSSLOWHASHContext);
if (!context) {
return NULL;
}
context->hashObj = HASH_GetRawHashObject(hashType);
if (!context->hashObj) {
PORT_Free(context);
return NULL;
}
context->hashCtxt = context->hashObj->create();
if (!context->hashCtxt) {
PORT_Free(context);
return NULL;
}
return context;
}
void
NSSLOWHASH_Begin(NSSLOWHASHContext *context)
{
return context->hashObj->begin(context->hashCtxt);
}
void
NSSLOWHASH_Update(NSSLOWHASHContext *context, const unsigned char *buf,
unsigned int len)
{
return context->hashObj->update(context->hashCtxt, buf, len);
}
void
NSSLOWHASH_End(NSSLOWHASHContext *context, unsigned char *buf,
unsigned int *ret, unsigned int len)
{
return context->hashObj->end(context->hashCtxt, buf, ret, len);
}
void
NSSLOWHASH_Destroy(NSSLOWHASHContext *context)
{
context->hashObj->destroy(context->hashCtxt, PR_TRUE);
PORT_Free(context);
}
unsigned int
NSSLOWHASH_Length(NSSLOWHASHContext *context)
{
return context->hashObj->length;
}
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