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gecko/security/nss/lib/softoken/sftkdb.c
Kai Engert 009fb15221 Bug 575620, landing NSS 3.12.7 beta 2 
r=wtc
2010-07-19 07:45:52 +02:00

2770 lines
76 KiB
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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* The following code handles the storage of PKCS 11 modules used by the
* NSS. For the rest of NSS, only one kind of database handle exists:
*
* SFTKDBHandle
*
* There is one SFTKDBHandle for the each key database and one for each cert
* database. These databases are opened as associated pairs, one pair per
* slot. SFTKDBHandles are reference counted objects.
*
* Each SFTKDBHandle points to a low level database handle (SDB). This handle
* represents the underlying physical database. These objects are not
* reference counted, an are 'owned' by their respective SFTKDBHandles.
*
*
*/
#include "sftkdb.h"
#include "sftkdbti.h"
#include "pkcs11t.h"
#include "pkcs11i.h"
#include "sdb.h"
#include "prprf.h"
#include "secmodt.h"
#include "pratom.h"
#include "lgglue.h"
#include "sftkpars.h"
#include "secerr.h"
#include "softoken.h"
/*
* We want all databases to have the same binary representation independent of
* endianness or length of the host architecture. In general PKCS #11 attributes
* are endian/length independent except those attributes that pass CK_ULONG.
*
* The following functions fixes up the CK_ULONG type attributes so that the data
* base sees a machine independent view. CK_ULONGs are stored as 4 byte network
* byte order values (big endian).
*/
#define BBP 8
static PRBool
sftkdb_isULONGAttribute(CK_ATTRIBUTE_TYPE type)
{
switch(type) {
case CKA_CERTIFICATE_CATEGORY:
case CKA_CERTIFICATE_TYPE:
case CKA_CLASS:
case CKA_JAVA_MIDP_SECURITY_DOMAIN:
case CKA_KEY_GEN_MECHANISM:
case CKA_KEY_TYPE:
case CKA_MECHANISM_TYPE:
case CKA_MODULUS_BITS:
case CKA_PRIME_BITS:
case CKA_SUBPRIME_BITS:
case CKA_VALUE_BITS:
case CKA_VALUE_LEN:
case CKA_TRUST_DIGITAL_SIGNATURE:
case CKA_TRUST_NON_REPUDIATION:
case CKA_TRUST_KEY_ENCIPHERMENT:
case CKA_TRUST_DATA_ENCIPHERMENT:
case CKA_TRUST_KEY_AGREEMENT:
case CKA_TRUST_KEY_CERT_SIGN:
case CKA_TRUST_CRL_SIGN:
case CKA_TRUST_SERVER_AUTH:
case CKA_TRUST_CLIENT_AUTH:
case CKA_TRUST_CODE_SIGNING:
case CKA_TRUST_EMAIL_PROTECTION:
case CKA_TRUST_IPSEC_END_SYSTEM:
case CKA_TRUST_IPSEC_TUNNEL:
case CKA_TRUST_IPSEC_USER:
case CKA_TRUST_TIME_STAMPING:
case CKA_TRUST_STEP_UP_APPROVED:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
/* are the attributes private? */
static PRBool
sftkdb_isPrivateAttribute(CK_ATTRIBUTE_TYPE type)
{
switch(type) {
case CKA_VALUE:
case CKA_PRIVATE_EXPONENT:
case CKA_PRIME_1:
case CKA_PRIME_2:
case CKA_EXPONENT_1:
case CKA_EXPONENT_2:
case CKA_COEFFICIENT:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
/* These attributes must be authenticated with an hmac. */
static PRBool
sftkdb_isAuthenticatedAttribute(CK_ATTRIBUTE_TYPE type)
{
switch(type) {
case CKA_MODULUS:
case CKA_PUBLIC_EXPONENT:
case CKA_CERT_SHA1_HASH:
case CKA_CERT_MD5_HASH:
case CKA_TRUST_SERVER_AUTH:
case CKA_TRUST_CLIENT_AUTH:
case CKA_TRUST_EMAIL_PROTECTION:
case CKA_TRUST_CODE_SIGNING:
case CKA_TRUST_STEP_UP_APPROVED:
case CKA_NSS_OVERRIDE_EXTENSIONS:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
/*
* convert a native ULONG to a database ulong. Database ulong's
* are all 4 byte big endian values.
*/
void
sftk_ULong2SDBULong(unsigned char *data, CK_ULONG value)
{
int i;
for (i=0; i < SDB_ULONG_SIZE; i++) {
data[i] = (value >> (SDB_ULONG_SIZE-1-i)*BBP) & 0xff;
}
}
/*
* convert a database ulong back to a native ULONG. (reverse of the above
* function.
*/
static CK_ULONG
sftk_SDBULong2ULong(unsigned char *data)
{
int i;
CK_ULONG value = 0;
for (i=0; i < SDB_ULONG_SIZE; i++) {
value |= (((CK_ULONG)data[i]) << (SDB_ULONG_SIZE-1-i)*BBP);
}
return value;
}
/*
* fix up the input templates. Our fixed up ints are stored in data and must
* be freed by the caller. The new template must also be freed. If there are no
* CK_ULONG attributes, the orignal template is passed in as is.
*/
static CK_ATTRIBUTE *
sftkdb_fixupTemplateIn(const CK_ATTRIBUTE *template, int count,
unsigned char **dataOut)
{
int i;
int ulongCount = 0;
unsigned char *data;
CK_ATTRIBUTE *ntemplate;
*dataOut = NULL;
/* first count the number of CK_ULONG attributes */
for (i=0; i < count; i++) {
/* Don't 'fixup' NULL values */
if (!template[i].pValue) {
continue;
}
if (template[i].ulValueLen == sizeof (CK_ULONG)) {
if ( sftkdb_isULONGAttribute(template[i].type)) {
ulongCount++;
}
}
}
/* no attributes to fixup, just call on through */
if (ulongCount == 0) {
return (CK_ATTRIBUTE *)template;
}
/* allocate space for new ULONGS */
data = (unsigned char *)PORT_Alloc(SDB_ULONG_SIZE*ulongCount);
if (!data) {
return NULL;
}
/* allocate new template */
ntemplate = PORT_NewArray(CK_ATTRIBUTE,count);
if (!ntemplate) {
PORT_Free(data);
return NULL;
}
*dataOut = data;
/* copy the old template, fixup the actual ulongs */
for (i=0; i < count; i++) {
ntemplate[i] = template[i];
/* Don't 'fixup' NULL values */
if (!template[i].pValue) {
continue;
}
if (template[i].ulValueLen == sizeof (CK_ULONG)) {
if ( sftkdb_isULONGAttribute(template[i].type) ) {
CK_ULONG value = *(CK_ULONG *) template[i].pValue;
sftk_ULong2SDBULong(data, value);
ntemplate[i].pValue = data;
ntemplate[i].ulValueLen = SDB_ULONG_SIZE;
data += SDB_ULONG_SIZE;
}
}
}
return ntemplate;
}
static const char SFTKDB_META_SIG_TEMPLATE[] = "sig_%s_%08x_%08x";
/*
* return a string describing the database type (key or cert)
*/
const char *
sftkdb_TypeString(SFTKDBHandle *handle)
{
return (handle->type == SFTK_KEYDB_TYPE) ? "key" : "cert";
}
/*
* Some attributes are signed with an Hmac and a pbe key generated from
* the password. This signature is stored indexed by object handle and
* attribute type in the meta data table in the key database.
*
* Signature entries are indexed by the string
* sig_[cert/key]_{ObjectID}_{Attribute}
*
* This function fetches that pkcs5 signature. Caller supplies a SECItem
* pre-allocated to the appropriate size if the SECItem is too small the
* function will fail with CKR_BUFFER_TOO_SMALL.
*/
static CK_RV
sftkdb_getAttributeSignature(SFTKDBHandle *handle, SFTKDBHandle *keyHandle,
CK_OBJECT_HANDLE objectID, CK_ATTRIBUTE_TYPE type,
SECItem *signText)
{
SDB *db;
char id[30];
CK_RV crv;
db = SFTK_GET_SDB(keyHandle);
sprintf(id, SFTKDB_META_SIG_TEMPLATE,
sftkdb_TypeString(handle),
(unsigned int)objectID, (unsigned int)type);
crv = (*db->sdb_GetMetaData)(db, id, signText, NULL);
return crv;
}
/*
* Some attributes are signed with an Hmac and a pbe key generated from
* the password. This signature is stored indexed by object handle and
* attribute type in the meta data table in the key database.
*
* Signature entries are indexed by the string
* sig_[cert/key]_{ObjectID}_{Attribute}
*
* This function stores that pkcs5 signature.
*/
CK_RV
sftkdb_PutAttributeSignature(SFTKDBHandle *handle, SDB *keyTarget,
CK_OBJECT_HANDLE objectID, CK_ATTRIBUTE_TYPE type,
SECItem *signText)
{
char id[30];
CK_RV crv;
sprintf(id, SFTKDB_META_SIG_TEMPLATE,
sftkdb_TypeString(handle),
(unsigned int)objectID, (unsigned int)type);
crv = (*keyTarget->sdb_PutMetaData)(keyTarget, id, signText, NULL);
return crv;
}
/*
* fix up returned data. NOTE: sftkdb_fixupTemplateIn has already allocated
* separate data sections for the database ULONG values.
*/
static CK_RV
sftkdb_fixupTemplateOut(CK_ATTRIBUTE *template, CK_OBJECT_HANDLE objectID,
CK_ATTRIBUTE *ntemplate, int count, SFTKDBHandle *handle)
{
int i;
CK_RV crv = CKR_OK;
SFTKDBHandle *keyHandle;
PRBool checkSig = PR_TRUE;
PRBool checkEnc = PR_TRUE;
PORT_Assert(handle);
/* find the key handle */
keyHandle = handle;
if (handle->type != SFTK_KEYDB_TYPE) {
checkEnc = PR_FALSE;
keyHandle = handle->peerDB;
}
if ((keyHandle == NULL) ||
((SFTK_GET_SDB(keyHandle)->sdb_flags & SDB_HAS_META) == 0) ||
(keyHandle->passwordKey.data == NULL)) {
checkSig = PR_FALSE;
}
for (i=0; i < count; i++) {
CK_ULONG length = template[i].ulValueLen;
template[i].ulValueLen = ntemplate[i].ulValueLen;
/* fixup ulongs */
if (ntemplate[i].ulValueLen == SDB_ULONG_SIZE) {
if (sftkdb_isULONGAttribute(template[i].type)) {
if (template[i].pValue) {
CK_ULONG value;
unsigned char *data;
data = (unsigned char *)ntemplate[i].pValue;
value = sftk_SDBULong2ULong(ntemplate[i].pValue);
if (length < sizeof(CK_ULONG)) {
template[i].ulValueLen = -1;
crv = CKR_BUFFER_TOO_SMALL;
continue;
}
PORT_Memcpy(template[i].pValue,&value,sizeof(CK_ULONG));
}
template[i].ulValueLen = sizeof(CK_ULONG);
}
}
/* if no data was retrieved, no need to process encrypted or signed
* attributes */
if ((template[i].pValue == NULL) || (template[i].ulValueLen == -1)) {
continue;
}
/* fixup private attributes */
if (checkEnc && sftkdb_isPrivateAttribute(ntemplate[i].type)) {
/* we have a private attribute */
/* This code depends on the fact that the cipherText is bigger
* than the plain text */
SECItem cipherText;
SECItem *plainText;
SECStatus rv;
cipherText.data = ntemplate[i].pValue;
cipherText.len = ntemplate[i].ulValueLen;
PZ_Lock(handle->passwordLock);
if (handle->passwordKey.data == NULL) {
PZ_Unlock(handle->passwordLock);
template[i].ulValueLen = -1;
crv = CKR_USER_NOT_LOGGED_IN;
continue;
}
rv = sftkdb_DecryptAttribute(&handle->passwordKey,
&cipherText, &plainText);
PZ_Unlock(handle->passwordLock);
if (rv != SECSuccess) {
PORT_Memset(template[i].pValue, 0, template[i].ulValueLen);
template[i].ulValueLen = -1;
crv = CKR_GENERAL_ERROR;
continue;
}
PORT_Assert(template[i].ulValueLen >= plainText->len);
if (template[i].ulValueLen < plainText->len) {
SECITEM_FreeItem(plainText,PR_TRUE);
PORT_Memset(template[i].pValue, 0, template[i].ulValueLen);
template[i].ulValueLen = -1;
crv = CKR_GENERAL_ERROR;
continue;
}
/* copy the plain text back into the template */
PORT_Memcpy(template[i].pValue, plainText->data, plainText->len);
template[i].ulValueLen = plainText->len;
SECITEM_FreeItem(plainText,PR_TRUE);
}
/* make sure signed attributes are valid */
if (checkSig && sftkdb_isAuthenticatedAttribute(ntemplate[i].type)) {
SECStatus rv;
SECItem signText;
SECItem plainText;
unsigned char signData[SDB_MAX_META_DATA_LEN];
signText.data = signData;
signText.len = sizeof(signData);
rv = sftkdb_getAttributeSignature(handle, keyHandle,
objectID, ntemplate[i].type, &signText);
if (rv != SECSuccess) {
PORT_Memset(template[i].pValue, 0, template[i].ulValueLen);
template[i].ulValueLen = -1;
crv = CKR_DATA_INVALID; /* better error code? */
continue;
}
plainText.data = ntemplate[i].pValue;
plainText.len = ntemplate[i].ulValueLen;
/*
* we do a second check holding the lock just in case the user
* loggout while we were trying to get the signature.
*/
PZ_Lock(keyHandle->passwordLock);
if (keyHandle->passwordKey.data == NULL) {
/* if we are no longer logged in, no use checking the other
* Signatures either. */
checkSig = PR_FALSE;
PZ_Unlock(keyHandle->passwordLock);
continue;
}
rv = sftkdb_VerifyAttribute(&keyHandle->passwordKey,
objectID, ntemplate[i].type,
&plainText, &signText);
PZ_Unlock(keyHandle->passwordLock);
if (rv != SECSuccess) {
PORT_Memset(template[i].pValue, 0, template[i].ulValueLen);
template[i].ulValueLen = -1;
crv = CKR_SIGNATURE_INVALID; /* better error code? */
}
/* This Attribute is fine */
}
}
return crv;
}
/*
* Some attributes are signed with an HMAC and a pbe key generated from
* the password. This signature is stored indexed by object handle and
*
* Those attributes are:
* 1) Trust object hashes and trust values.
* 2) public key values.
*
* Certs themselves are considered properly authenticated by virtue of their
* signature, or their matching hash with the trust object.
*
* These signature is only checked for objects coming from shared databases.
* Older dbm style databases have such no signature checks. HMACs are also
* only checked when the token is logged in, as it requires a pbe generated
* from the password.
*
* Tokens which have no key database (and therefore no master password) do not
* have any stored signature values. Signature values are stored in the key
* database, since the signature data is tightly coupled to the key database
* password.
*
* This function takes a template of attributes that were either created or
* modified. These attributes are checked to see if the need to be signed.
* If they do, then this function signs the attributes and writes them
* to the meta data store.
*
* This function can fail if there are attributes that must be signed, but
* the token is not logged in.
*
* The caller is expected to abort any transaction he was in in the
* event of a failure of this function.
*/
static CK_RV
sftk_signTemplate(PLArenaPool *arena, SFTKDBHandle *handle,
PRBool mayBeUpdateDB,
CK_OBJECT_HANDLE objectID, const CK_ATTRIBUTE *template,
CK_ULONG count)
{
int i;
CK_RV crv;
SFTKDBHandle *keyHandle = handle;
SDB *keyTarget = NULL;
PRBool usingPeerDB = PR_FALSE;
PRBool inPeerDBTransaction = PR_FALSE;
PORT_Assert(handle);
if (handle->type != SFTK_KEYDB_TYPE) {
keyHandle = handle->peerDB;
usingPeerDB = PR_TRUE;
}
/* no key DB defined? then no need to sign anything */
if (keyHandle == NULL) {
crv = CKR_OK;
goto loser;
}
/* When we are in a middle of an update, we have an update database set,
* but we want to write to the real database. The bool mayBeUpdateDB is
* set to TRUE if it's possible that we want to write an update database
* rather than a primary */
keyTarget = (mayBeUpdateDB && keyHandle->update) ?
keyHandle->update : keyHandle->db;
/* skip the the database does not support meta data */
if ((keyTarget->sdb_flags & SDB_HAS_META) == 0) {
crv = CKR_OK;
goto loser;
}
/* If we had to switch databases, we need to initialize a transaction. */
if (usingPeerDB) {
crv = (*keyTarget->sdb_Begin)(keyTarget);
if (crv != CKR_OK) {
goto loser;
}
inPeerDBTransaction = PR_TRUE;
}
for (i=0; i < count; i ++) {
if (sftkdb_isAuthenticatedAttribute(template[i].type)) {
SECStatus rv;
SECItem *signText;
SECItem plainText;
plainText.data = template[i].pValue;
plainText.len = template[i].ulValueLen;
PZ_Lock(keyHandle->passwordLock);
if (keyHandle->passwordKey.data == NULL) {
PZ_Unlock(keyHandle->passwordLock);
crv = CKR_USER_NOT_LOGGED_IN;
goto loser;
}
rv = sftkdb_SignAttribute(arena, &keyHandle->passwordKey,
objectID, template[i].type,
&plainText, &signText);
PZ_Unlock(keyHandle->passwordLock);
if (rv != SECSuccess) {
crv = CKR_GENERAL_ERROR; /* better error code here? */
goto loser;
}
rv = sftkdb_PutAttributeSignature(handle, keyTarget,
objectID, template[i].type, signText);
if (rv != SECSuccess) {
crv = CKR_GENERAL_ERROR; /* better error code here? */
goto loser;
}
}
}
crv = CKR_OK;
/* If necessary, commit the transaction */
if (inPeerDBTransaction) {
crv = (*keyTarget->sdb_Commit)(keyTarget);
if (crv != CKR_OK) {
goto loser;
}
inPeerDBTransaction = PR_FALSE;
}
loser:
if (inPeerDBTransaction) {
/* The transaction must have failed. Abort. */
(*keyTarget->sdb_Abort)(keyTarget);
PORT_Assert(crv != CKR_OK);
if (crv == CKR_OK) crv = CKR_GENERAL_ERROR;
}
return crv;
}
static CK_RV
sftkdb_CreateObject(PRArenaPool *arena, SFTKDBHandle *handle,
SDB *db, CK_OBJECT_HANDLE *objectID,
CK_ATTRIBUTE *template, CK_ULONG count)
{
PRBool inTransaction = PR_FALSE;
CK_RV crv;
inTransaction = PR_TRUE;
crv = (*db->sdb_CreateObject)(db, objectID, template, count);
if (crv != CKR_OK) {
goto loser;
}
crv = sftk_signTemplate(arena, handle, (db == handle->update),
*objectID, template, count);
loser:
return crv;
}
CK_ATTRIBUTE *
sftk_ExtractTemplate(PLArenaPool *arena, SFTKObject *object,
SFTKDBHandle *handle,CK_ULONG *pcount,
CK_RV *crv)
{
int count;
CK_ATTRIBUTE *template;
int i, templateIndex;
SFTKSessionObject *sessObject = sftk_narrowToSessionObject(object);
PRBool doEnc = PR_TRUE;
*crv = CKR_OK;
if (sessObject == NULL) {
*crv = CKR_GENERAL_ERROR; /* internal programming error */
return NULL;
}
PORT_Assert(handle);
/* find the key handle */
if (handle->type != SFTK_KEYDB_TYPE) {
doEnc = PR_FALSE;
}
PZ_Lock(sessObject->attributeLock);
count = 0;
for (i=0; i < sessObject->hashSize; i++) {
SFTKAttribute *attr;
for (attr=sessObject->head[i]; attr; attr=attr->next) {
count++;
}
}
template = PORT_ArenaNewArray(arena, CK_ATTRIBUTE, count);
if (template == NULL) {
PZ_Unlock(sessObject->attributeLock);
*crv = CKR_HOST_MEMORY;
return NULL;
}
templateIndex = 0;
for (i=0; i < sessObject->hashSize; i++) {
SFTKAttribute *attr;
for (attr=sessObject->head[i]; attr; attr=attr->next) {
CK_ATTRIBUTE *tp = &template[templateIndex++];
/* copy the attribute */
*tp = attr->attrib;
/* fixup ULONG s */
if ((tp->ulValueLen == sizeof (CK_ULONG)) &&
(sftkdb_isULONGAttribute(tp->type)) ) {
CK_ULONG value = *(CK_ULONG *) tp->pValue;
unsigned char *data;
tp->pValue = PORT_ArenaAlloc(arena, SDB_ULONG_SIZE);
data = (unsigned char *)tp->pValue;
if (data == NULL) {
*crv = CKR_HOST_MEMORY;
break;
}
sftk_ULong2SDBULong(data, value);
tp->ulValueLen = SDB_ULONG_SIZE;
}
/* encrypt private attributes */
if (doEnc && sftkdb_isPrivateAttribute(tp->type)) {
/* we have a private attribute */
SECItem *cipherText;
SECItem plainText;
SECStatus rv;
plainText.data = tp->pValue;
plainText.len = tp->ulValueLen;
PZ_Lock(handle->passwordLock);
if (handle->passwordKey.data == NULL) {
PZ_Unlock(handle->passwordLock);
*crv = CKR_USER_NOT_LOGGED_IN;
break;
}
rv = sftkdb_EncryptAttribute(arena, &handle->passwordKey,
&plainText, &cipherText);
PZ_Unlock(handle->passwordLock);
if (rv == SECSuccess) {
tp->pValue = cipherText->data;
tp->ulValueLen = cipherText->len;
} else {
*crv = CKR_GENERAL_ERROR; /* better error code here? */
break;
}
PORT_Memset(plainText.data, 0, plainText.len);
}
}
}
PORT_Assert(templateIndex <= count);
PZ_Unlock(sessObject->attributeLock);
if (*crv != CKR_OK) {
return NULL;
}
if (pcount) {
*pcount = count;
}
return template;
}
/*
* return a pointer to the attribute in the give template.
* The return value is not const, as the caller may modify
* the given attribute value, but such modifications will
* modify the actual value in the template.
*/
static CK_ATTRIBUTE *
sftkdb_getAttributeFromTemplate(CK_ATTRIBUTE_TYPE attribute,
CK_ATTRIBUTE *ptemplate, CK_ULONG len)
{
CK_ULONG i;
for (i=0; i < len; i++) {
if (attribute == ptemplate[i].type) {
return &ptemplate[i];
}
}
return NULL;
}
static const CK_ATTRIBUTE *
sftkdb_getAttributeFromConstTemplate(CK_ATTRIBUTE_TYPE attribute,
const CK_ATTRIBUTE *ptemplate, CK_ULONG len)
{
CK_ULONG i;
for (i=0; i < len; i++) {
if (attribute == ptemplate[i].type) {
return &ptemplate[i];
}
}
return NULL;
}
/*
* fetch a template which identifies 'unique' entries based on object type
*/
static CK_RV
sftkdb_getFindTemplate(CK_OBJECT_CLASS objectType, unsigned char *objTypeData,
CK_ATTRIBUTE *findTemplate, CK_ULONG *findCount,
CK_ATTRIBUTE *ptemplate, int len)
{
CK_ATTRIBUTE *attr;
CK_ULONG count = 1;
sftk_ULong2SDBULong(objTypeData, objectType);
findTemplate[0].type = CKA_CLASS;
findTemplate[0].pValue = objTypeData;
findTemplate[0].ulValueLen = SDB_ULONG_SIZE;
switch (objectType) {
case CKO_CERTIFICATE:
case CKO_NSS_TRUST:
attr = sftkdb_getAttributeFromTemplate(CKA_ISSUER, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[1] = *attr;
attr = sftkdb_getAttributeFromTemplate(CKA_SERIAL_NUMBER,
ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[2] = *attr;
count = 3;
break;
case CKO_PRIVATE_KEY:
case CKO_PUBLIC_KEY:
case CKO_SECRET_KEY:
attr = sftkdb_getAttributeFromTemplate(CKA_ID, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
if (attr->ulValueLen == 0) {
/* key is too generic to determine that it's unique, usually
* happens in the key gen case */
return CKR_OBJECT_HANDLE_INVALID;
}
findTemplate[1] = *attr;
count = 2;
break;
case CKO_NSS_CRL:
attr = sftkdb_getAttributeFromTemplate(CKA_SUBJECT, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[1] = *attr;
count = 2;
break;
case CKO_NSS_SMIME:
attr = sftkdb_getAttributeFromTemplate(CKA_SUBJECT, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[1] = *attr;
attr = sftkdb_getAttributeFromTemplate(CKA_NSS_EMAIL, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[2] = *attr;
count = 3;
break;
default:
attr = sftkdb_getAttributeFromTemplate(CKA_VALUE, ptemplate, len);
if (attr == NULL) {
return CKR_TEMPLATE_INCOMPLETE;
}
findTemplate[1] = *attr;
count = 2;
break;
}
*findCount = count;
return CKR_OK;
}
/*
* look to see if this object already exists and return its object ID if
* it does.
*/
static CK_RV
sftkdb_lookupObject(SDB *db, CK_OBJECT_CLASS objectType,
CK_OBJECT_HANDLE *id, CK_ATTRIBUTE *ptemplate, CK_ULONG len)
{
CK_ATTRIBUTE findTemplate[3];
CK_ULONG count = 1;
CK_ULONG objCount = 0;
SDBFind *find = NULL;
unsigned char objTypeData[SDB_ULONG_SIZE];
CK_RV crv;
*id = CK_INVALID_HANDLE;
if (objectType == CKO_NSS_CRL) {
return CKR_OK;
}
crv = sftkdb_getFindTemplate(objectType, objTypeData,
findTemplate, &count, ptemplate, len);
if (crv == CKR_OBJECT_HANDLE_INVALID) {
/* key is too generic to determine that it's unique, usually
* happens in the key gen case, tell the caller to go ahead
* and just create it */
return CKR_OK;
}
if (crv != CKR_OK) {
return crv;
}
/* use the raw find, so we get the correct database */
crv = (*db->sdb_FindObjectsInit)(db, findTemplate, count, &find);
if (crv != CKR_OK) {
return crv;
}
(*db->sdb_FindObjects)(db, find, id, 1, &objCount);
(*db->sdb_FindObjectsFinal)(db, find);
if (objCount == 0) {
*id = CK_INVALID_HANDLE;
}
return CKR_OK;
}
/*
* check to see if this template conflicts with others in our current database.
*/
static CK_RV
sftkdb_checkConflicts(SDB *db, CK_OBJECT_CLASS objectType,
const CK_ATTRIBUTE *ptemplate, CK_ULONG len,
CK_OBJECT_HANDLE sourceID)
{
CK_ATTRIBUTE findTemplate[2];
unsigned char objTypeData[SDB_ULONG_SIZE];
/* we may need to allocate some temporaries. Keep track of what was
* allocated so we can free it in the end */
unsigned char *temp1 = NULL;
unsigned char *temp2 = NULL;
CK_ULONG objCount = 0;
SDBFind *find = NULL;
CK_OBJECT_HANDLE id;
const CK_ATTRIBUTE *attr, *attr2;
CK_RV crv;
CK_ATTRIBUTE subject;
/* Currently the only conflict is with nicknames pointing to the same
* subject when creating or modifying a certificate. */
/* If the object is not a cert, no problem. */
if (objectType != CKO_CERTIFICATE) {
return CKR_OK;
}
/* if not setting a nickname then there's still no problem */
attr = sftkdb_getAttributeFromConstTemplate(CKA_LABEL, ptemplate, len);
if ((attr == NULL) || (attr->ulValueLen == 0)) {
return CKR_OK;
}
/* fetch the subject of the source. For creation and merge, this should
* be found in the template */
attr2 = sftkdb_getAttributeFromConstTemplate(CKA_SUBJECT, ptemplate, len);
if (sourceID == CK_INVALID_HANDLE) {
if ((attr2 == NULL) || ((CK_LONG)attr2->ulValueLen < 0)) {
crv = CKR_TEMPLATE_INCOMPLETE;
goto done;
}
} else if ((attr2 == NULL) || ((CK_LONG)attr2->ulValueLen <= 0)) {
/* sourceID is set if we are trying to modify an existing entry instead
* of creating a new one. In this case the subject may not be (probably
* isn't) in the template, we have to read it from the database */
subject.type = CKA_SUBJECT;
subject.pValue = NULL;
subject.ulValueLen = 0;
crv = (*db->sdb_GetAttributeValue)(db, sourceID, &subject, 1);
if (crv != CKR_OK) {
goto done;
}
if ((CK_LONG)subject.ulValueLen < 0) {
crv = CKR_DEVICE_ERROR; /* closest pkcs11 error to corrupted DB */
goto done;
}
temp1 = subject.pValue = PORT_Alloc(++subject.ulValueLen);
if (temp1 == NULL) {
crv = CKR_HOST_MEMORY;
goto done;
}
crv = (*db->sdb_GetAttributeValue)(db, sourceID, &subject, 1);
if (crv != CKR_OK) {
goto done;
}
attr2 = &subject;
}
/* check for another cert in the database with the same nickname */
sftk_ULong2SDBULong(objTypeData, objectType);
findTemplate[0].type = CKA_CLASS;
findTemplate[0].pValue = objTypeData;
findTemplate[0].ulValueLen = SDB_ULONG_SIZE;
findTemplate[1] = *attr;
crv = (*db->sdb_FindObjectsInit)(db, findTemplate, 2, &find);
if (crv != CKR_OK) {
goto done;
}
(*db->sdb_FindObjects)(db, find, &id, 1, &objCount);
(*db->sdb_FindObjectsFinal)(db, find);
/* object count == 0 means no conflicting certs found,
* go on with the operation */
if (objCount == 0) {
crv = CKR_OK;
goto done;
}
/* There is a least one cert that shares the nickname, make sure it also
* matches the subject. */
findTemplate[0] = *attr2;
/* we know how big the source subject was. Use that length to create the
* space for the target. If it's not enough space, then it means the
* source subject is too big, and therefore not a match. GetAttributeValue
* will return CKR_BUFFER_TOO_SMALL. Otherwise it should be exactly enough
* space (or enough space to be able to compare the result. */
temp2 = findTemplate[0].pValue = PORT_Alloc(++findTemplate[0].ulValueLen);
if (temp2 == NULL) {
crv = CKR_HOST_MEMORY;
goto done;
}
crv = (*db->sdb_GetAttributeValue)(db, id, findTemplate, 1);
if (crv != CKR_OK) {
if (crv == CKR_BUFFER_TOO_SMALL) {
/* if our buffer is too small, then the Subjects clearly do
* not match */
crv = CKR_ATTRIBUTE_VALUE_INVALID;
goto loser;
}
/* otherwise we couldn't get the value, just fail */
goto done;
}
/* Ok, we have both subjects, make sure they are the same.
* Compare the subjects */
if ((findTemplate[0].ulValueLen != attr2->ulValueLen) ||
(attr2->ulValueLen > 0 &&
PORT_Memcmp(findTemplate[0].pValue, attr2->pValue, attr2->ulValueLen)
!= 0)) {
crv = CKR_ATTRIBUTE_VALUE_INVALID;
goto loser;
}
crv = CKR_OK;
done:
/* If we've failed for some other reason than a conflict, make sure we
* return an error code other than CKR_ATTRIBUTE_VALUE_INVALID.
* (NOTE: neither sdb_FindObjectsInit nor sdb_GetAttributeValue should
* return CKR_ATTRIBUTE_VALUE_INVALID, so the following is paranoia).
*/
if (crv == CKR_ATTRIBUTE_VALUE_INVALID) {
crv = CKR_GENERAL_ERROR; /* clearly a programming error */
}
/* exit point if we found a conflict */
loser:
PORT_Free(temp1);
PORT_Free(temp2);
return crv;
}
/*
* try to update the template to fix any errors. This is only done
* during update.
*
* NOTE: we must update the template or return an error, or the update caller
* will loop forever!
*
* Two copies of the source code for this algorithm exist in NSS.
* Changes must be made in both copies.
* The other copy is in pk11_IncrementNickname() in pk11wrap/pk11merge.c.
*
*/
static CK_RV
sftkdb_resolveConflicts(PRArenaPool *arena, CK_OBJECT_CLASS objectType,
CK_ATTRIBUTE *ptemplate, CK_ULONG *plen)
{
CK_ATTRIBUTE *attr;
char *nickname, *newNickname;
int end, digit;
/* sanity checks. We should never get here with these errors */
if (objectType != CKO_CERTIFICATE) {
return CKR_GENERAL_ERROR; /* shouldn't happen */
}
attr = sftkdb_getAttributeFromTemplate(CKA_LABEL, ptemplate, *plen);
if ((attr == NULL) || (attr->ulValueLen == 0)) {
return CKR_GENERAL_ERROR; /* shouldn't happen */
}
/* update the nickname */
/* is there a number at the end of the nickname already?
* if so just increment that number */
nickname = (char *)attr->pValue;
/* does nickname end with " #n*" ? */
for (end = attr->ulValueLen - 1;
end >= 2 && (digit = nickname[end]) <= '9' && digit >= '0';
end--) /* just scan */ ;
if (attr->ulValueLen >= 3 &&
end < (attr->ulValueLen - 1) /* at least one digit */ &&
nickname[end] == '#' &&
nickname[end - 1] == ' ') {
/* Already has a suitable suffix string */
} else {
/* ... append " #2" to the name */
static const char num2[] = " #2";
newNickname = PORT_ArenaAlloc(arena, attr->ulValueLen + sizeof(num2));
if (!newNickname) {
return CKR_HOST_MEMORY;
}
PORT_Memcpy(newNickname, nickname, attr->ulValueLen);
PORT_Memcpy(&newNickname[attr->ulValueLen], num2, sizeof(num2));
attr->pValue = newNickname; /* modifies ptemplate */
attr->ulValueLen += 3; /* 3 is strlen(num2) */
return CKR_OK;
}
for (end = attr->ulValueLen - 1;
end >= 0 && (digit = nickname[end]) <= '9' && digit >= '0';
end--) {
if (digit < '9') {
nickname[end]++;
return CKR_OK;
}
nickname[end] = '0';
}
/* we overflowed, insert a new '1' for a carry in front of the number */
newNickname = PORT_ArenaAlloc(arena, attr->ulValueLen + 1);
if (!newNickname) {
return CKR_HOST_MEMORY;
}
/* PORT_Memcpy should handle len of '0' */
PORT_Memcpy(newNickname, nickname, ++end);
newNickname[end] = '1';
PORT_Memset(&newNickname[end+1],'0',attr->ulValueLen - end);
attr->pValue = newNickname;
attr->ulValueLen++;
return CKR_OK;
}
/*
* set an attribute and sign it if necessary
*/
static CK_RV
sftkdb_setAttributeValue(PRArenaPool *arena, SFTKDBHandle *handle,
SDB *db, CK_OBJECT_HANDLE objectID, const CK_ATTRIBUTE *template,
CK_ULONG count)
{
CK_RV crv;
crv = (*db->sdb_SetAttributeValue)(db, objectID, template, count);
if (crv != CKR_OK) {
return crv;
}
crv = sftk_signTemplate(arena, handle, db == handle->update,
objectID, template, count);
return crv;
}
/*
* write a softoken object out to the database.
*/
CK_RV
sftkdb_write(SFTKDBHandle *handle, SFTKObject *object,
CK_OBJECT_HANDLE *objectID)
{
CK_ATTRIBUTE *template;
PLArenaPool *arena;
CK_ULONG count;
CK_RV crv;
SDB *db;
PRBool inTransaction = PR_FALSE;
CK_OBJECT_HANDLE id;
*objectID = CK_INVALID_HANDLE;
if (handle == NULL) {
return CKR_TOKEN_WRITE_PROTECTED;
}
db = SFTK_GET_SDB(handle);
/*
* we have opened a new database, but we have not yet updated it. We are
* still running pointing to the old database (so the application can
* still read). We don't want to write to the old database at this point,
* however, since it leads to user confusion. So at this point we simply
* require a user login. Let NSS know this so it can prompt the user.
*/
if (db == handle->update) {
return CKR_USER_NOT_LOGGED_IN;
}
arena = PORT_NewArena(256);
if (arena == NULL) {
return CKR_HOST_MEMORY;
}
template = sftk_ExtractTemplate(arena, object, handle, &count, &crv);
if (!template) {
goto loser;
}
crv = (*db->sdb_Begin)(db);
if (crv != CKR_OK) {
goto loser;
}
inTransaction = PR_TRUE;
/*
* We want to make the base database as free from object specific knowledge
* as possible. To maintain compatibility, keep some of the desirable
* object specific semantics of the old database.
*
* These were 2 fold:
* 1) there were certain conflicts (like trying to set the same nickname
* on two different subjects) that would return an error.
* 2) Importing the 'same' object would silently update that object.
*
* The following 2 functions mimic the desirable effects of these two
* semantics without pushing any object knowledge to the underlying database
* code.
*/
/* make sure we don't have attributes that conflict with the existing DB */
crv = sftkdb_checkConflicts(db, object->objclass, template, count,
CK_INVALID_HANDLE);
if (crv != CKR_OK) {
goto loser;
}
/* Find any copies that match this particular object */
crv = sftkdb_lookupObject(db, object->objclass, &id, template, count);
if (crv != CKR_OK) {
goto loser;
}
if (id == CK_INVALID_HANDLE) {
crv = sftkdb_CreateObject(arena, handle, db, objectID, template, count);
} else {
/* object already exists, modify it's attributes */
*objectID = id;
crv = sftkdb_setAttributeValue(arena, handle, db, id, template, count);
}
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_Commit)(db);
inTransaction = PR_FALSE;
loser:
if (inTransaction) {
(*db->sdb_Abort)(db);
/* It is trivial to show the following code cannot
* happen unless something is horribly wrong with our compilier or
* hardware */
PORT_Assert(crv != CKR_OK);
if (crv == CKR_OK) crv = CKR_GENERAL_ERROR;
}
if (arena) {
PORT_FreeArena(arena,PR_FALSE);
}
if (crv == CKR_OK) {
*objectID |= (handle->type | SFTK_TOKEN_TYPE);
}
return crv;
}
CK_RV
sftkdb_FindObjectsInit(SFTKDBHandle *handle, const CK_ATTRIBUTE *template,
CK_ULONG count, SDBFind **find)
{
unsigned char *data = NULL;
CK_ATTRIBUTE *ntemplate = NULL;
CK_RV crv;
SDB *db;
if (handle == NULL) {
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
if (count != 0) {
ntemplate = sftkdb_fixupTemplateIn(template, count, &data);
if (ntemplate == NULL) {
return CKR_HOST_MEMORY;
}
}
crv = (*db->sdb_FindObjectsInit)(db, ntemplate,
count, find);
if (data) {
PORT_Free(ntemplate);
PORT_Free(data);
}
return crv;
}
CK_RV
sftkdb_FindObjects(SFTKDBHandle *handle, SDBFind *find,
CK_OBJECT_HANDLE *ids, int arraySize, CK_ULONG *count)
{
CK_RV crv;
SDB *db;
if (handle == NULL) {
*count = 0;
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
crv = (*db->sdb_FindObjects)(db, find, ids,
arraySize, count);
if (crv == CKR_OK) {
int i;
for (i=0; i < *count; i++) {
ids[i] |= (handle->type | SFTK_TOKEN_TYPE);
}
}
return crv;
}
CK_RV sftkdb_FindObjectsFinal(SFTKDBHandle *handle, SDBFind *find)
{
SDB *db;
if (handle == NULL) {
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
return (*db->sdb_FindObjectsFinal)(db, find);
}
CK_RV
sftkdb_GetAttributeValue(SFTKDBHandle *handle, CK_OBJECT_HANDLE objectID,
CK_ATTRIBUTE *template, CK_ULONG count)
{
CK_RV crv,crv2;
CK_ATTRIBUTE *ntemplate;
unsigned char *data = NULL;
SDB *db;
if (handle == NULL) {
return CKR_GENERAL_ERROR;
}
/* short circuit common attributes */
if (count == 1 &&
(template[0].type == CKA_TOKEN ||
template[0].type == CKA_PRIVATE ||
template[0].type == CKA_SENSITIVE)) {
CK_BBOOL boolVal = CK_TRUE;
if (template[0].pValue == NULL) {
template[0].ulValueLen = sizeof(CK_BBOOL);
return CKR_OK;
}
if (template[0].ulValueLen < sizeof(CK_BBOOL)) {
template[0].ulValueLen = -1;
return CKR_BUFFER_TOO_SMALL;
}
if ((template[0].type == CKA_PRIVATE) &&
(handle->type != SFTK_KEYDB_TYPE)) {
boolVal = CK_FALSE;
}
if ((template[0].type == CKA_SENSITIVE) &&
(handle->type != SFTK_KEYDB_TYPE)) {
boolVal = CK_FALSE;
}
*(CK_BBOOL *)template[0].pValue = boolVal;
template[0].ulValueLen = sizeof(CK_BBOOL);
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
/* nothing to do */
if (count == 0) {
return CKR_OK;
}
ntemplate = sftkdb_fixupTemplateIn(template, count, &data);
if (ntemplate == NULL) {
return CKR_HOST_MEMORY;
}
objectID &= SFTK_OBJ_ID_MASK;
crv = (*db->sdb_GetAttributeValue)(db, objectID,
ntemplate, count);
crv2 = sftkdb_fixupTemplateOut(template, objectID, ntemplate,
count, handle);
if (crv == CKR_OK) crv = crv2;
if (data) {
PORT_Free(ntemplate);
PORT_Free(data);
}
return crv;
}
CK_RV
sftkdb_SetAttributeValue(SFTKDBHandle *handle, SFTKObject *object,
const CK_ATTRIBUTE *template, CK_ULONG count)
{
CK_ATTRIBUTE *ntemplate;
unsigned char *data = NULL;
PLArenaPool *arena = NULL;
SDB *db;
CK_RV crv = CKR_OK;
CK_OBJECT_HANDLE objectID = (object->handle & SFTK_OBJ_ID_MASK);
PRBool inTransaction = PR_FALSE;
if (handle == NULL) {
return CKR_TOKEN_WRITE_PROTECTED;
}
db = SFTK_GET_SDB(handle);
/* nothing to do */
if (count == 0) {
return CKR_OK;
}
/*
* we have opened a new database, but we have not yet updated it. We are
* still running pointing to the old database (so the application can
* still read). We don't want to write to the old database at this point,
* however, since it leads to user confusion. So at this point we simply
* require a user login. Let NSS know this so it can prompt the user.
*/
if (db == handle->update) {
return CKR_USER_NOT_LOGGED_IN;
}
ntemplate = sftkdb_fixupTemplateIn(template, count, &data);
if (ntemplate == NULL) {
return CKR_HOST_MEMORY;
}
/* make sure we don't have attributes that conflict with the existing DB */
crv = sftkdb_checkConflicts(db, object->objclass, template, count, objectID);
if (crv != CKR_OK) {
goto loser;
}
arena = PORT_NewArena(256);
if (arena == NULL) {
crv = CKR_HOST_MEMORY;
goto loser;
}
crv = (*db->sdb_Begin)(db);
if (crv != CKR_OK) {
goto loser;
}
inTransaction = PR_TRUE;
crv = sftkdb_setAttributeValue(arena, handle, db,
objectID, template, count);
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_Commit)(db);
loser:
if (crv != CKR_OK && inTransaction) {
(*db->sdb_Abort)(db);
}
if (data) {
PORT_Free(ntemplate);
PORT_Free(data);
}
if (arena) {
PORT_FreeArena(arena, PR_FALSE);
}
return crv;
}
CK_RV
sftkdb_DestroyObject(SFTKDBHandle *handle, CK_OBJECT_HANDLE objectID)
{
CK_RV crv = CKR_OK;
SDB *db;
if (handle == NULL) {
return CKR_TOKEN_WRITE_PROTECTED;
}
db = SFTK_GET_SDB(handle);
objectID &= SFTK_OBJ_ID_MASK;
crv = (*db->sdb_Begin)(db);
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_DestroyObject)(db, objectID);
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_Commit)(db);
loser:
if (crv != CKR_OK) {
(*db->sdb_Abort)(db);
}
return crv;
}
CK_RV
sftkdb_CloseDB(SFTKDBHandle *handle)
{
#ifdef NO_FORK_CHECK
PRBool parentForkedAfterC_Initialize = PR_FALSE;
#endif
if (handle == NULL) {
return CKR_OK;
}
if (handle->update) {
if (handle->db->sdb_SetForkState) {
(*handle->db->sdb_SetForkState)(parentForkedAfterC_Initialize);
}
(*handle->update->sdb_Close)(handle->update);
}
if (handle->db) {
if (handle->db->sdb_SetForkState) {
(*handle->db->sdb_SetForkState)(parentForkedAfterC_Initialize);
}
(*handle->db->sdb_Close)(handle->db);
}
if (handle->passwordLock) {
SKIP_AFTER_FORK(PZ_DestroyLock(handle->passwordLock));
}
if (handle->updatePasswordKey) {
SECITEM_FreeItem(handle->updatePasswordKey, PR_TRUE);
}
if (handle->updateID) {
PORT_Free(handle->updateID);
}
PORT_Free(handle);
return CKR_OK;
}
/*
* reset a database to it's uninitialized state.
*/
static CK_RV
sftkdb_ResetDB(SFTKDBHandle *handle)
{
CK_RV crv = CKR_OK;
SDB *db;
if (handle == NULL) {
return CKR_TOKEN_WRITE_PROTECTED;
}
db = SFTK_GET_SDB(handle);
crv = (*db->sdb_Begin)(db);
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_Reset)(db);
if (crv != CKR_OK) {
goto loser;
}
crv = (*db->sdb_Commit)(db);
loser:
if (crv != CKR_OK) {
(*db->sdb_Abort)(db);
}
return crv;
}
CK_RV
sftkdb_Begin(SFTKDBHandle *handle)
{
CK_RV crv = CKR_OK;
SDB *db;
if (handle == NULL) {
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
if (db) {
crv = (*db->sdb_Begin)(db);
}
return crv;
}
CK_RV
sftkdb_Commit(SFTKDBHandle *handle)
{
CK_RV crv = CKR_OK;
SDB *db;
if (handle == NULL) {
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
if (db) {
(*db->sdb_Commit)(db);
}
return crv;
}
CK_RV
sftkdb_Abort(SFTKDBHandle *handle)
{
CK_RV crv = CKR_OK;
SDB *db;
if (handle == NULL) {
return CKR_OK;
}
db = SFTK_GET_SDB(handle);
if (db) {
crv = (db->sdb_Abort)(db);
}
return crv;
}
/*
* functions to update the database from an old database
*/
/*
* known attributes
*/
static const CK_ATTRIBUTE_TYPE known_attributes[] = {
CKA_CLASS, CKA_TOKEN, CKA_PRIVATE, CKA_LABEL, CKA_APPLICATION,
CKA_VALUE, CKA_OBJECT_ID, CKA_CERTIFICATE_TYPE, CKA_ISSUER,
CKA_SERIAL_NUMBER, CKA_AC_ISSUER, CKA_OWNER, CKA_ATTR_TYPES, CKA_TRUSTED,
CKA_CERTIFICATE_CATEGORY, CKA_JAVA_MIDP_SECURITY_DOMAIN, CKA_URL,
CKA_HASH_OF_SUBJECT_PUBLIC_KEY, CKA_HASH_OF_ISSUER_PUBLIC_KEY,
CKA_CHECK_VALUE, CKA_KEY_TYPE, CKA_SUBJECT, CKA_ID, CKA_SENSITIVE,
CKA_ENCRYPT, CKA_DECRYPT, CKA_WRAP, CKA_UNWRAP, CKA_SIGN, CKA_SIGN_RECOVER,
CKA_VERIFY, CKA_VERIFY_RECOVER, CKA_DERIVE, CKA_START_DATE, CKA_END_DATE,
CKA_MODULUS, CKA_MODULUS_BITS, CKA_PUBLIC_EXPONENT, CKA_PRIVATE_EXPONENT,
CKA_PRIME_1, CKA_PRIME_2, CKA_EXPONENT_1, CKA_EXPONENT_2, CKA_COEFFICIENT,
CKA_PRIME, CKA_SUBPRIME, CKA_BASE, CKA_PRIME_BITS,
CKA_SUB_PRIME_BITS, CKA_VALUE_BITS, CKA_VALUE_LEN, CKA_EXTRACTABLE,
CKA_LOCAL, CKA_NEVER_EXTRACTABLE, CKA_ALWAYS_SENSITIVE,
CKA_KEY_GEN_MECHANISM, CKA_MODIFIABLE, CKA_EC_PARAMS,
CKA_EC_POINT, CKA_SECONDARY_AUTH, CKA_AUTH_PIN_FLAGS,
CKA_ALWAYS_AUTHENTICATE, CKA_WRAP_WITH_TRUSTED, CKA_WRAP_TEMPLATE,
CKA_UNWRAP_TEMPLATE, CKA_HW_FEATURE_TYPE, CKA_RESET_ON_INIT,
CKA_HAS_RESET, CKA_PIXEL_X, CKA_PIXEL_Y, CKA_RESOLUTION, CKA_CHAR_ROWS,
CKA_CHAR_COLUMNS, CKA_COLOR, CKA_BITS_PER_PIXEL, CKA_CHAR_SETS,
CKA_ENCODING_METHODS, CKA_MIME_TYPES, CKA_MECHANISM_TYPE,
CKA_REQUIRED_CMS_ATTRIBUTES, CKA_DEFAULT_CMS_ATTRIBUTES,
CKA_SUPPORTED_CMS_ATTRIBUTES, CKA_NSS_URL, CKA_NSS_EMAIL,
CKA_NSS_SMIME_INFO, CKA_NSS_SMIME_TIMESTAMP,
CKA_NSS_PKCS8_SALT, CKA_NSS_PASSWORD_CHECK, CKA_NSS_EXPIRES,
CKA_NSS_KRL, CKA_NSS_PQG_COUNTER, CKA_NSS_PQG_SEED,
CKA_NSS_PQG_H, CKA_NSS_PQG_SEED_BITS, CKA_NSS_MODULE_SPEC,
CKA_TRUST_DIGITAL_SIGNATURE, CKA_TRUST_NON_REPUDIATION,
CKA_TRUST_KEY_ENCIPHERMENT, CKA_TRUST_DATA_ENCIPHERMENT,
CKA_TRUST_KEY_AGREEMENT, CKA_TRUST_KEY_CERT_SIGN, CKA_TRUST_CRL_SIGN,
CKA_TRUST_SERVER_AUTH, CKA_TRUST_CLIENT_AUTH, CKA_TRUST_CODE_SIGNING,
CKA_TRUST_EMAIL_PROTECTION, CKA_TRUST_IPSEC_END_SYSTEM,
CKA_TRUST_IPSEC_TUNNEL, CKA_TRUST_IPSEC_USER, CKA_TRUST_TIME_STAMPING,
CKA_TRUST_STEP_UP_APPROVED, CKA_CERT_SHA1_HASH, CKA_CERT_MD5_HASH,
CKA_NETSCAPE_DB, CKA_NETSCAPE_TRUST, CKA_NSS_OVERRIDE_EXTENSIONS
};
static int known_attributes_size= sizeof(known_attributes)/
sizeof(known_attributes[0]);
static CK_RV
sftkdb_GetObjectTemplate(SDB *source, CK_OBJECT_HANDLE id,
CK_ATTRIBUTE *ptemplate, CK_ULONG *max)
{
int i,j;
CK_RV crv;
if (*max < known_attributes_size) {
*max = known_attributes_size;
return CKR_BUFFER_TOO_SMALL;
}
for (i=0; i < known_attributes_size; i++) {
ptemplate[i].type = known_attributes[i];
ptemplate[i].pValue = NULL;
ptemplate[i].ulValueLen = 0;
}
crv = (*source->sdb_GetAttributeValue)(source, id,
ptemplate, known_attributes_size);
if ((crv != CKR_OK) && (crv != CKR_ATTRIBUTE_TYPE_INVALID)) {
return crv;
}
for (i=0, j=0; i < known_attributes_size; i++, j++) {
while (i < known_attributes_size && (ptemplate[i].ulValueLen == -1)) {
i++;
}
if (i >= known_attributes_size) {
break;
}
/* cheap optimization */
if (i == j) {
continue;
}
ptemplate[j] = ptemplate[i];
}
*max = j;
return CKR_OK;
}
static const char SFTKDB_META_UPDATE_TEMPLATE[] = "upd_%s_%s";
/*
* check to see if we have already updated this database.
* a NULL updateID means we are trying to do an in place
* single database update. In that case we have already
* determined that an update was necessary.
*/
static PRBool
sftkdb_hasUpdate(const char *typeString, SDB *db, const char *updateID)
{
char *id;
CK_RV crv;
SECItem dummy = { 0, NULL, 0 };
unsigned char dummyData[SDB_MAX_META_DATA_LEN];
if (!updateID) {
return PR_FALSE;
}
id = PR_smprintf(SFTKDB_META_UPDATE_TEMPLATE, typeString, updateID);
if (id == NULL) {
return PR_FALSE;
}
dummy.data = dummyData;
dummy.len = sizeof(dummyData);
crv = (*db->sdb_GetMetaData)(db, id, &dummy, NULL);
PR_smprintf_free(id);
return crv == CKR_OK ? PR_TRUE : PR_FALSE;
}
/*
* we just completed an update, store the update id
* so we don't need to do it again. If non was given,
* there is nothing to do.
*/
static CK_RV
sftkdb_putUpdate(const char *typeString, SDB *db, const char *updateID)
{
char *id;
CK_RV crv;
SECItem dummy = { 0, NULL, 0 };
/* if no id was given, nothing to do */
if (updateID == NULL) {
return CKR_OK;
}
dummy.data = (unsigned char *)updateID;
dummy.len = PORT_Strlen(updateID);
id = PR_smprintf(SFTKDB_META_UPDATE_TEMPLATE, typeString, updateID);
if (id == NULL) {
return PR_FALSE;
}
crv = (*db->sdb_PutMetaData)(db, id, &dummy, NULL);
PR_smprintf_free(id);
return crv;
}
/*
* get a ULong attribute from a template:
* NOTE: this is a raw templated stored in database order!
*/
static CK_ULONG
sftkdb_getULongFromTemplate(CK_ATTRIBUTE_TYPE type,
CK_ATTRIBUTE *ptemplate, CK_ULONG len)
{
CK_ATTRIBUTE *attr = sftkdb_getAttributeFromTemplate(type,
ptemplate, len);
if (attr && attr->pValue && attr->ulValueLen == SDB_ULONG_SIZE) {
return sftk_SDBULong2ULong(attr->pValue);
}
return (CK_ULONG)-1;
}
/*
* we need to find a unique CKA_ID.
* The basic idea is to just increment the lowest byte.
* This code also handles the following corner cases:
* 1) the single byte overflows. On overflow we increment the next byte up
* and so forth until we have overflowed the entire CKA_ID.
* 2) If we overflow the entire CKA_ID we expand it by one byte.
* 3) the CKA_ID is non-existant, we create a new one with one byte.
* This means no matter what CKA_ID is passed, the result of this function
* is always a new CKA_ID, and this function will never return the same
* CKA_ID the it has returned in the passed.
*/
static CK_RV
sftkdb_incrementCKAID(PRArenaPool *arena, CK_ATTRIBUTE *ptemplate)
{
unsigned char *buf = ptemplate->pValue;
CK_ULONG len = ptemplate->ulValueLen;
if (buf == NULL || len == (CK_ULONG)-1) {
/* we have no valid CKAID, we'll create a basic one byte CKA_ID below */
len = 0;
} else {
CK_ULONG i;
/* walk from the back to front, incrementing
* the CKA_ID until we no longer have a carry,
* or have hit the front of the id. */
for (i=len; i != 0; i--) {
buf[i-1]++;
if (buf[i-1] != 0) {
/* no more carries, the increment is complete */
return CKR_OK;
}
}
/* we've now overflowed, fall through and expand the CKA_ID by
* one byte */
}
buf = PORT_ArenaAlloc(arena, len+1);
if (!buf) {
return CKR_HOST_MEMORY;
}
if (len > 0) {
PORT_Memcpy(buf, ptemplate->pValue, len);
}
buf[len] = 0;
ptemplate->pValue = buf;
ptemplate->ulValueLen = len+1;
return CKR_OK;
}
/*
* drop an attribute from a template.
*/
void
sftkdb_dropAttribute(CK_ATTRIBUTE *attr, CK_ATTRIBUTE *ptemplate,
CK_ULONG *plen)
{
CK_ULONG count = *plen;
CK_ULONG i;
for (i=0; i < count; i++) {
if (attr->type == ptemplate[i].type) {
break;
}
}
if (i == count) {
/* attribute not found */
return;
}
/* copy the remaining attributes up */
for ( i++; i < count; i++) {
ptemplate[i-1] = ptemplate[i];
}
/* decrement the template size */
*plen = count -1;
}
/*
* create some defines for the following functions to document the meaning
* of true/false. (make's it easier to remember what means what.
*/
typedef enum {
SFTKDB_DO_NOTHING = 0,
SFTKDB_ADD_OBJECT,
SFTKDB_MODIFY_OBJECT,
SFTKDB_DROP_ATTRIBUTE
} sftkdbUpdateStatus;
/*
* helper function to reconcile a single trust entry.
* Identify which trust entry we want to keep.
* If we don't need to do anything (the records are already equal).
* return SFTKDB_DO_NOTHING.
* If we want to use the source version,
* return SFTKDB_MODIFY_OBJECT
* If we want to use the target version,
* return SFTKDB_DROP_ATTRIBUTE
*
* In the end the caller will remove any attributes in the source
* template when SFTKDB_DROP_ATTRIBUTE is specified, then use do a
* set attributes with that template on the target if we received
* any SFTKDB_MODIFY_OBJECT returns.
*/
sftkdbUpdateStatus
sftkdb_reconcileTrustEntry(PRArenaPool *arena, CK_ATTRIBUTE *target,
CK_ATTRIBUTE *source)
{
CK_ULONG targetTrust = sftkdb_getULongFromTemplate(target->type,
target, 1);
CK_ULONG sourceTrust = sftkdb_getULongFromTemplate(target->type,
source, 1);
/*
* try to pick the best solution between the source and the
* target. Update the source template if we want the target value
* to win out. Prefer cases where we don't actually update the
* trust entry.
*/
/* they are the same, everything is already kosher */
if (targetTrust == sourceTrust) {
return SFTKDB_DO_NOTHING;
}
/* handle the case where the source Trust attribute may be a bit
* flakey */
if (sourceTrust == (CK_ULONG)-1) {
/*
* The source Trust is invalid. We know that the target Trust
* must be valid here, otherwise the above
* targetTrust == sourceTrust check would have succeeded.
*/
return SFTKDB_DROP_ATTRIBUTE;
}
/* target is invalid, use the source's idea of the trust value */
if (targetTrust == (CK_ULONG)-1) {
/* overwriting the target in this case is OK */
return SFTKDB_MODIFY_OBJECT;
}
/* at this point we know that both attributes exist and have the
* appropriate length (SDB_ULONG_SIZE). We no longer need to check
* ulValueLen for either attribute.
*/
if (sourceTrust == CKT_NSS_TRUST_UNKNOWN) {
return SFTKDB_DROP_ATTRIBUTE;
}
/* target has no idea, use the source's idea of the trust value */
if (targetTrust == CKT_NSS_TRUST_UNKNOWN) {
/* overwriting the target in this case is OK */
return SFTKDB_MODIFY_OBJECT;
}
/* so both the target and the source have some idea of what this
* trust attribute should be, and neither agree exactly.
* At this point, we prefer 'hard' attributes over 'soft' ones.
* 'hard' ones are CKT_NSS_TRUSTED, CKT_NSS_TRUSTED_DELEGATOR, and
* CKT_NSS_UNTRUTED. Soft ones are ones which don't change the
* actual trust of the cert (CKT_MUST_VERIFY, CKT_NSS_VALID,
* CKT_NSS_VALID_DELEGATOR).
*/
if ((sourceTrust == CKT_NSS_MUST_VERIFY)
|| (sourceTrust == CKT_NSS_VALID)
|| (sourceTrust == CKT_NSS_VALID_DELEGATOR)) {
return SFTKDB_DROP_ATTRIBUTE;
}
if ((targetTrust == CKT_NSS_MUST_VERIFY)
|| (targetTrust == CKT_NSS_VALID)
|| (targetTrust == CKT_NSS_VALID_DELEGATOR)) {
/* again, overwriting the target in this case is OK */
return SFTKDB_MODIFY_OBJECT;
}
/* both have hard attributes, we have a conflict, let the target win. */
return SFTKDB_DROP_ATTRIBUTE;
}
const CK_ATTRIBUTE_TYPE sftkdb_trustList[] =
{ CKA_TRUST_SERVER_AUTH, CKA_TRUST_CLIENT_AUTH,
CKA_TRUST_CODE_SIGNING, CKA_TRUST_EMAIL_PROTECTION,
CKA_TRUST_IPSEC_TUNNEL, CKA_TRUST_IPSEC_USER,
CKA_TRUST_TIME_STAMPING };
#define SFTK_TRUST_TEMPLATE_COUNT \
(sizeof(sftkdb_trustList)/sizeof(sftkdb_trustList[0]))
/*
* Run through the list of known trust types, and reconcile each trust
* entry one by one. Keep track of we really need to write out the source
* trust object (overwriting the existing one).
*/
static sftkdbUpdateStatus
sftkdb_reconcileTrust(PRArenaPool *arena, SDB *db, CK_OBJECT_HANDLE id,
CK_ATTRIBUTE *ptemplate, CK_ULONG *plen)
{
CK_ATTRIBUTE trustTemplate[SFTK_TRUST_TEMPLATE_COUNT];
unsigned char trustData[SFTK_TRUST_TEMPLATE_COUNT*SDB_ULONG_SIZE];
sftkdbUpdateStatus update = SFTKDB_DO_NOTHING;
CK_ULONG i;
CK_RV crv;
for (i=0; i < SFTK_TRUST_TEMPLATE_COUNT; i++) {
trustTemplate[i].type = sftkdb_trustList[i];
trustTemplate[i].pValue = &trustData[i*SDB_ULONG_SIZE];
trustTemplate[i].ulValueLen = SDB_ULONG_SIZE;
}
crv = (*db->sdb_GetAttributeValue)(db, id,
trustTemplate, SFTK_TRUST_TEMPLATE_COUNT);
if ((crv != CKR_OK) && (crv != CKR_ATTRIBUTE_TYPE_INVALID)) {
/* target trust has some problems, update it */
update = SFTKDB_MODIFY_OBJECT;
goto done;
}
for (i=0; i < SFTK_TRUST_TEMPLATE_COUNT; i++) {
CK_ATTRIBUTE *attr = sftkdb_getAttributeFromTemplate(
trustTemplate[i].type, ptemplate, *plen);
sftkdbUpdateStatus status;
/* if target trust value doesn't exist, nothing to merge */
if (trustTemplate[i].ulValueLen == (CK_ULONG)-1) {
/* if the source exists, then we want the source entry,
* go ahead and update */
if (attr && attr->ulValueLen != (CK_ULONG)-1) {
update = SFTKDB_MODIFY_OBJECT;
}
continue;
}
/*
* the source doesn't have the attribute, go to the next attribute
*/
if (attr == NULL) {
continue;
}
status = sftkdb_reconcileTrustEntry(arena, &trustTemplate[i], attr);
if (status == SFTKDB_MODIFY_OBJECT) {
update = SFTKDB_MODIFY_OBJECT;
} else if (status == SFTKDB_DROP_ATTRIBUTE) {
/* drop the source copy of the attribute, we are going with
* the target's version */
sftkdb_dropAttribute(attr, ptemplate, plen);
}
}
/* finally manage stepup */
if (update == SFTKDB_MODIFY_OBJECT) {
CK_BBOOL stepUpBool = CK_FALSE;
/* if we are going to write from the source, make sure we don't
* overwrite the stepup bit if it's on*/
trustTemplate[0].type = CKA_TRUST_STEP_UP_APPROVED;
trustTemplate[0].pValue = &stepUpBool;
trustTemplate[0].ulValueLen = sizeof(stepUpBool);
crv = (*db->sdb_GetAttributeValue)(db, id, trustTemplate, 1);
if ((crv == CKR_OK) && (stepUpBool == CK_TRUE)) {
sftkdb_dropAttribute(trustTemplate, ptemplate, plen);
}
} else {
/* we currently aren't going to update. If the source stepup bit is
* on however, do an update so the target gets it as well */
CK_ATTRIBUTE *attr;
attr = sftkdb_getAttributeFromTemplate(CKA_TRUST_STEP_UP_APPROVED,
ptemplate, *plen);
if (attr && (attr->ulValueLen == sizeof(CK_BBOOL)) &&
(*(CK_BBOOL *)(attr->pValue) == CK_TRUE)) {
update = SFTKDB_MODIFY_OBJECT;
}
}
done:
return update;
}
static sftkdbUpdateStatus
sftkdb_handleIDAndName(PRArenaPool *arena, SDB *db, CK_OBJECT_HANDLE id,
CK_ATTRIBUTE *ptemplate, CK_ULONG *plen)
{
sftkdbUpdateStatus update = SFTKDB_DO_NOTHING;
CK_ATTRIBUTE *attr1, *attr2;
CK_ATTRIBUTE ttemplate[2] = {
{CKA_ID, NULL, 0},
{CKA_LABEL, NULL, 0}
};
CK_RV crv;
attr1 = sftkdb_getAttributeFromTemplate(CKA_LABEL, ptemplate, *plen);
attr2 = sftkdb_getAttributeFromTemplate(CKA_ID, ptemplate, *plen);
/* if the source has neither an id nor label, don't bother updating */
if ( (!attr1 || attr1->ulValueLen == 0) &&
(! attr2 || attr2->ulValueLen == 0) ) {
return SFTKDB_DO_NOTHING;
}
/* the source has either an id or a label, see what the target has */
crv = (*db->sdb_GetAttributeValue)(db, id, ttemplate, 2);
/* if the target has neither, update from the source */
if ( ((ttemplate[0].ulValueLen == 0) ||
(ttemplate[0].ulValueLen == (CK_ULONG)-1)) &&
((ttemplate[1].ulValueLen == 0) ||
(ttemplate[1].ulValueLen == (CK_ULONG)-1)) ) {
return SFTKDB_MODIFY_OBJECT;
}
/* check the CKA_ID */
if ((ttemplate[0].ulValueLen != 0) &&
(ttemplate[0].ulValueLen != (CK_ULONG)-1)) {
/* we have a CKA_ID in the target, don't overwrite
* the target with an empty CKA_ID from the source*/
if (attr1 && attr1->ulValueLen == 0) {
sftkdb_dropAttribute(attr1, ptemplate, plen);
}
} else if (attr1 && attr1->ulValueLen != 0) {
/* source has a CKA_ID, but the target doesn't, update the target */
update = SFTKDB_MODIFY_OBJECT;
}
/* check the nickname */
if ((ttemplate[1].ulValueLen != 0) &&
(ttemplate[1].ulValueLen != (CK_ULONG)-1)) {
/* we have a nickname in the target, and we don't have to update
* the CKA_ID. We are done. NOTE: if we add addition attributes
* in this check, this shortcut can only go on the last of them. */
if (update == SFTKDB_DO_NOTHING) {
return update;
}
/* we have a nickname in the target, don't overwrite
* the target with an empty nickname from the source */
if (attr2 && attr2->ulValueLen == 0) {
sftkdb_dropAttribute(attr2, ptemplate, plen);
}
} else if (attr2 && attr2->ulValueLen != 0) {
/* source has a nickname, but the target doesn't, update the target */
update = SFTKDB_MODIFY_OBJECT;
}
return update;
}
/*
* This function updates the template before we write the object out.
*
* If we are going to skip updating this object, return PR_FALSE.
* If it should be updated we return PR_TRUE.
* To help readability, these have been defined
* as SFTK_DONT_UPDATE and SFTK_UPDATE respectively.
*/
static PRBool
sftkdb_updateObjectTemplate(PRArenaPool *arena, SDB *db,
CK_OBJECT_CLASS objectType,
CK_ATTRIBUTE *ptemplate, CK_ULONG *plen,
CK_OBJECT_HANDLE *targetID)
{
PRBool done; /* should we repeat the loop? */
CK_OBJECT_HANDLE id;
CK_RV crv = CKR_OK;
do {
crv = sftkdb_checkConflicts(db, objectType, ptemplate,
*plen, CK_INVALID_HANDLE);
if (crv != CKR_ATTRIBUTE_VALUE_INVALID) {
break;
}
crv = sftkdb_resolveConflicts(arena, objectType, ptemplate, plen);
} while (crv == CKR_OK);
if (crv != CKR_OK) {
return SFTKDB_DO_NOTHING;
}
do {
done = PR_TRUE;
crv = sftkdb_lookupObject(db, objectType, &id, ptemplate, *plen);
if (crv != CKR_OK) {
return SFTKDB_DO_NOTHING;
}
/* This object already exists, merge it, don't update */
if (id != CK_INVALID_HANDLE) {
CK_ATTRIBUTE *attr = NULL;
/* special post processing for attributes */
switch (objectType) {
case CKO_CERTIFICATE:
case CKO_PUBLIC_KEY:
case CKO_PRIVATE_KEY:
/* update target's CKA_ID and labels if they don't already
* exist */
*targetID = id;
return sftkdb_handleIDAndName(arena, db, id, ptemplate, plen);
case CKO_NSS_TRUST:
/* if we have conflicting trust object types,
* we need to reconcile them */
*targetID = id;
return sftkdb_reconcileTrust(arena, db, id, ptemplate, plen);
case CKO_SECRET_KEY:
/* secret keys in the old database are all sdr keys,
* unfortunately they all appear to have the same CKA_ID,
* even though they are truly different keys, so we always
* want to update these keys, but we need to
* give them a new CKA_ID */
/* NOTE: this changes ptemplate */
attr = sftkdb_getAttributeFromTemplate(CKA_ID,ptemplate,*plen);
crv = attr ? sftkdb_incrementCKAID(arena, attr)
: CKR_HOST_MEMORY;
/* in the extremely rare event that we needed memory and
* couldn't get it, just drop the key */
if (crv != CKR_OK) {
return SFTKDB_DO_NOTHING;
}
done = PR_FALSE; /* repeat this find loop */
break;
default:
/* for all other objects, if we found the equivalent object,
* don't update it */
return SFTKDB_DO_NOTHING;
}
}
} while (!done);
/* this object doesn't exist, update it */
return SFTKDB_ADD_OBJECT;
}
#define MAX_ATTRIBUTES 500
static CK_RV
sftkdb_mergeObject(SFTKDBHandle *handle, CK_OBJECT_HANDLE id,
SECItem *key)
{
CK_ATTRIBUTE template[MAX_ATTRIBUTES];
CK_ATTRIBUTE *ptemplate;
CK_ULONG max_attributes = MAX_ATTRIBUTES;
CK_OBJECT_CLASS objectType;
SDB *source = handle->update;
SDB *target = handle->db;
int i;
CK_RV crv;
PLArenaPool *arena = NULL;
arena = PORT_NewArena(256);
if (arena == NULL) {
return CKR_HOST_MEMORY;
}
ptemplate = &template[0];
id &= SFTK_OBJ_ID_MASK;
crv = sftkdb_GetObjectTemplate(source, id, ptemplate, &max_attributes);
if (crv == CKR_BUFFER_TOO_SMALL) {
ptemplate = PORT_ArenaNewArray(arena, CK_ATTRIBUTE, max_attributes);
if (ptemplate == NULL) {
crv = CKR_HOST_MEMORY;
} else {
crv = sftkdb_GetObjectTemplate(source, id,
ptemplate, &max_attributes);
}
}
if (crv != CKR_OK) {
goto loser;
}
for (i=0; i < max_attributes; i++) {
ptemplate[i].pValue = PORT_ArenaAlloc(arena,ptemplate[i].ulValueLen);
if (ptemplate[i].pValue == NULL) {
crv = CKR_HOST_MEMORY;
goto loser;
}
}
crv = (*source->sdb_GetAttributeValue)(source, id,
ptemplate, max_attributes);
if (crv != CKR_OK) {
goto loser;
}
objectType = sftkdb_getULongFromTemplate(CKA_CLASS, ptemplate,
max_attributes);
/*
* Update Object updates the object template if necessary then returns
* whether or not we need to actually write the object out to our target
* database.
*/
if (!handle->updateID) {
crv = sftkdb_CreateObject(arena, handle, target, &id,
ptemplate, max_attributes);
} else {
sftkdbUpdateStatus update_status;
update_status = sftkdb_updateObjectTemplate(arena, target,
objectType, ptemplate, &max_attributes, &id);
switch (update_status) {
case SFTKDB_ADD_OBJECT:
crv = sftkdb_CreateObject(arena, handle, target, &id,
ptemplate, max_attributes);
break;
case SFTKDB_MODIFY_OBJECT:
crv = sftkdb_setAttributeValue(arena, handle, target,
id, ptemplate, max_attributes);
break;
case SFTKDB_DO_NOTHING:
case SFTKDB_DROP_ATTRIBUTE:
break;
}
}
loser:
if (arena) {
PORT_FreeArena(arena,PR_TRUE);
}
return crv;
}
#define MAX_IDS 10
/*
* update a new database from an old one, now that we have the key
*/
CK_RV
sftkdb_Update(SFTKDBHandle *handle, SECItem *key)
{
SDBFind *find = NULL;
CK_ULONG idCount = MAX_IDS;
CK_OBJECT_HANDLE ids[MAX_IDS];
SECItem *updatePasswordKey = NULL;
CK_RV crv, crv2;
PRBool inTransaction = PR_FALSE;
int i;
if (handle == NULL) {
return CKR_OK;
}
if (handle->update == NULL) {
return CKR_OK;
}
/*
* put the whole update under a transaction. This allows us to handle
* any possible race conditions between with the updateID check.
*/
crv = (*handle->db->sdb_Begin)(handle->db);
if (crv != CKR_OK) {
goto loser;
}
inTransaction = PR_TRUE;
/* some one else has already updated this db */
if (sftkdb_hasUpdate(sftkdb_TypeString(handle),
handle->db, handle->updateID)) {
crv = CKR_OK;
goto done;
}
updatePasswordKey = sftkdb_GetUpdatePasswordKey(handle);
if (updatePasswordKey) {
/* pass the source DB key to the legacy code,
* so it can decrypt things */
handle->oldKey = updatePasswordKey;
}
/* find all the objects */
crv = sftkdb_FindObjectsInit(handle, NULL, 0, &find);
if (crv != CKR_OK) {
goto loser;
}
while ((crv == CKR_OK) && (idCount == MAX_IDS)) {
crv = sftkdb_FindObjects(handle, find, ids, MAX_IDS, &idCount);
for (i=0; (crv == CKR_OK) && (i < idCount); i++) {
crv = sftkdb_mergeObject(handle, ids[i], key);
}
}
crv2 = sftkdb_FindObjectsFinal(handle, find);
if (crv == CKR_OK) crv = crv2;
loser:
/* no longer need the old key value */
handle->oldKey = NULL;
/* update the password - even if we didn't update objects */
if (handle->type == SFTK_KEYDB_TYPE) {
SECItem item1, item2;
unsigned char data1[SDB_MAX_META_DATA_LEN];
unsigned char data2[SDB_MAX_META_DATA_LEN];
item1.data = data1;
item1.len = sizeof(data1);
item2.data = data2;
item2.len = sizeof(data2);
/* if the target db already has a password, skip this. */
crv = (*handle->db->sdb_GetMetaData)(handle->db, "password",
&item1, &item2);
if (crv == CKR_OK) {
goto done;
}
/* nope, update it from the source */
crv = (*handle->update->sdb_GetMetaData)(handle->update, "password",
&item1, &item2);
if (crv != CKR_OK) {
goto done;
}
crv = (*handle->db->sdb_PutMetaData)(handle->db, "password", &item1,
&item2);
if (crv != CKR_OK) {
goto done;
}
}
done:
/* finally mark this up to date db up to date */
/* some one else has already updated this db */
if (crv == CKR_OK) {
crv = sftkdb_putUpdate(sftkdb_TypeString(handle),
handle->db, handle->updateID);
}
if (inTransaction) {
if (crv == CKR_OK) {
crv = (*handle->db->sdb_Commit)(handle->db);
} else {
(*handle->db->sdb_Abort)(handle->db);
}
}
if (handle->update) {
(*handle->update->sdb_Close)(handle->update);
handle->update = NULL;
}
if (handle->updateID) {
PORT_Free(handle->updateID);
handle->updateID = NULL;
}
sftkdb_FreeUpdatePasswordKey(handle);
if (updatePasswordKey) {
SECITEM_ZfreeItem(updatePasswordKey, PR_TRUE);
}
handle->updateDBIsInit = PR_FALSE;
return crv;
}
/******************************************************************
* DB handle managing functions.
*
* These functions are called by softoken to initialize, acquire,
* and release database handles.
*/
const char *
sftkdb_GetUpdateID(SFTKDBHandle *handle)
{
return handle->updateID;
}
/* release a database handle */
void
sftk_freeDB(SFTKDBHandle *handle)
{
PRInt32 ref;
if (!handle) return;
ref = PR_AtomicDecrement(&handle->ref);
if (ref == 0) {
sftkdb_CloseDB(handle);
}
return;
}
/*
* acquire a database handle for a certificate db
* (database for public objects)
*/
SFTKDBHandle *
sftk_getCertDB(SFTKSlot *slot)
{
SFTKDBHandle *dbHandle;
PZ_Lock(slot->slotLock);
dbHandle = slot->certDB;
if (dbHandle) {
PR_AtomicIncrement(&dbHandle->ref);
}
PZ_Unlock(slot->slotLock);
return dbHandle;
}
/*
* acquire a database handle for a key database
* (database for private objects)
*/
SFTKDBHandle *
sftk_getKeyDB(SFTKSlot *slot)
{
SFTKDBHandle *dbHandle;
SKIP_AFTER_FORK(PZ_Lock(slot->slotLock));
dbHandle = slot->keyDB;
if (dbHandle) {
PR_AtomicIncrement(&dbHandle->ref);
}
SKIP_AFTER_FORK(PZ_Unlock(slot->slotLock));
return dbHandle;
}
/*
* acquire the database for a specific object. NOTE: objectID must point
* to a Token object!
*/
SFTKDBHandle *
sftk_getDBForTokenObject(SFTKSlot *slot, CK_OBJECT_HANDLE objectID)
{
SFTKDBHandle *dbHandle;
PZ_Lock(slot->slotLock);
dbHandle = objectID & SFTK_KEYDB_TYPE ? slot->keyDB : slot->certDB;
if (dbHandle) {
PR_AtomicIncrement(&dbHandle->ref);
}
PZ_Unlock(slot->slotLock);
return dbHandle;
}
/*
* initialize a new database handle
*/
static SFTKDBHandle *
sftk_NewDBHandle(SDB *sdb, int type)
{
SFTKDBHandle *handle = PORT_New(SFTKDBHandle);
handle->ref = 1;
handle->db = sdb;
handle->update = NULL;
handle->peerDB = NULL;
handle->newKey = NULL;
handle->oldKey = NULL;
handle->updatePasswordKey = NULL;
handle->updateID = NULL;
handle->type = type;
handle->passwordKey.data = NULL;
handle->passwordKey.len = 0;
handle->passwordLock = NULL;
if (type == SFTK_KEYDB_TYPE) {
handle->passwordLock = PZ_NewLock(nssILockAttribute);
}
sdb->app_private = handle;
return handle;
}
/*
* reset the key database to it's uninitialized state. This call
* will clear all the key entried.
*/
SECStatus
sftkdb_ResetKeyDB(SFTKDBHandle *handle)
{
CK_RV crv;
/* only rest the key db */
if (handle->type != SFTK_KEYDB_TYPE) {
return SECFailure;
}
crv = sftkdb_ResetDB(handle);
if (crv != CKR_OK) {
/* set error */
return SECFailure;
}
return SECSuccess;
}
static PRBool
sftk_oldVersionExists(const char *dir, int version)
{
int i;
PRStatus exists = PR_FAILURE;
char *file = NULL;
for (i=version; i > 1 ; i--) {
file = PR_smprintf("%s%d.db",dir,i);
if (file == NULL) {
continue;
}
exists = PR_Access(file, PR_ACCESS_EXISTS);
PR_smprintf_free(file);
if (exists == PR_SUCCESS) {
return PR_TRUE;
}
}
return PR_FALSE;
}
static PRBool
sftk_hasLegacyDB(const char *confdir, const char *certPrefix,
const char *keyPrefix, int certVersion, int keyVersion)
{
char *dir;
PRBool exists;
if (certPrefix == NULL) {
certPrefix = "";
}
if (keyPrefix == NULL) {
keyPrefix = "";
}
dir= PR_smprintf("%s/%scert", confdir, certPrefix);
if (dir == NULL) {
return PR_FALSE;
}
exists = sftk_oldVersionExists(dir, certVersion);
PR_smprintf_free(dir);
if (exists) {
return PR_TRUE;
}
dir= PR_smprintf("%s/%skey", confdir, keyPrefix);
if (dir == NULL) {
return PR_FALSE;
}
exists = sftk_oldVersionExists(dir, keyVersion);
PR_smprintf_free(dir);
return exists;
}
/*
* initialize certificate and key database handles as a pair.
*
* This function figures out what type of database we are opening and
* calls the appropriate low level function to open the database.
* It also figures out whether or not to setup up automatic update.
*/
CK_RV
sftk_DBInit(const char *configdir, const char *certPrefix,
const char *keyPrefix, const char *updatedir,
const char *updCertPrefix, const char *updKeyPrefix,
const char *updateID, PRBool readOnly, PRBool noCertDB,
PRBool noKeyDB, PRBool forceOpen, PRBool isFIPS,
SFTKDBHandle **certDB, SFTKDBHandle **keyDB)
{
const char *confdir;
SDBType dbType;
char *appName = NULL;
SDB *keySDB, *certSDB;
CK_RV crv = CKR_OK;
int flags = SDB_RDONLY;
PRBool newInit = PR_FALSE;
PRBool needUpdate = PR_FALSE;
if (!readOnly) {
flags = SDB_CREATE;
}
*certDB = NULL;
*keyDB = NULL;
if (noKeyDB && noCertDB) {
return CKR_OK;
}
confdir = sftk_EvaluateConfigDir(configdir, &dbType, &appName);
/*
* now initialize the appropriate database
*/
switch (dbType) {
case SDB_LEGACY:
crv = sftkdbCall_open(confdir, certPrefix, keyPrefix, 8, 3, flags,
isFIPS, noCertDB? NULL : &certSDB, noKeyDB ? NULL: &keySDB);
break;
case SDB_MULTIACCESS:
crv = sftkdbCall_open(configdir, certPrefix, keyPrefix, 8, 3, flags,
isFIPS, noCertDB? NULL : &certSDB, noKeyDB ? NULL: &keySDB);
break;
case SDB_SQL:
case SDB_EXTERN: /* SHOULD open a loadable db */
crv = s_open(confdir, certPrefix, keyPrefix, 9, 4, flags,
noCertDB? NULL : &certSDB, noKeyDB ? NULL : &keySDB, &newInit);
/*
* if we failed to open the DB's read only, use the old ones if
* the exists.
*/
if (crv != CKR_OK) {
if ((flags == SDB_RDONLY) &&
sftk_hasLegacyDB(confdir, certPrefix, keyPrefix, 8, 3)) {
/* we have legacy databases, if we failed to open the new format
* DB's read only, just use the legacy ones */
crv = sftkdbCall_open(confdir, certPrefix,
keyPrefix, 8, 3, flags, isFIPS,
noCertDB? NULL : &certSDB, noKeyDB ? NULL : &keySDB);
}
/* Handle the database merge case.
*
* For the merge case, we need help from the application. Only
* the application knows where the old database is, and what unique
* identifier it has associated with it.
*
* If the client supplies these values, we use them to determine
* if we need to update.
*/
} else if (
/* both update params have been supplied */
updatedir && *updatedir && updateID && *updateID
/* old dbs exist? */
&& sftk_hasLegacyDB(updatedir, updCertPrefix, updKeyPrefix, 8, 3)
/* and they have not yet been updated? */
&& ((noKeyDB || !sftkdb_hasUpdate("key", keySDB, updateID))
|| (noCertDB || !sftkdb_hasUpdate("cert", certSDB, updateID)))) {
/* we need to update */
confdir = updatedir;
certPrefix = updCertPrefix;
keyPrefix = updKeyPrefix;
needUpdate = PR_TRUE;
} else if (newInit) {
/* if the new format DB was also a newly created DB, and we
* succeeded, then need to update that new database with data
* from the existing legacy DB */
if (sftk_hasLegacyDB(confdir, certPrefix, keyPrefix, 8, 3)) {
needUpdate = PR_TRUE;
}
}
break;
default:
crv = CKR_GENERAL_ERROR; /* can't happen, EvaluationConfigDir MUST
* return one of the types we already
* specified. */
}
if (crv != CKR_OK) {
goto done;
}
if (!noCertDB) {
*certDB = sftk_NewDBHandle(certSDB, SFTK_CERTDB_TYPE);
} else {
*certDB = NULL;
}
if (!noKeyDB) {
*keyDB = sftk_NewDBHandle(keySDB, SFTK_KEYDB_TYPE);
} else {
*keyDB = NULL;
}
/* link them together */
if (*certDB) {
(*certDB)->peerDB = *keyDB;
}
if (*keyDB) {
(*keyDB)->peerDB = *certDB;
}
/*
* if we need to update, open the legacy database and
* mark the handle as needing update.
*/
if (needUpdate) {
SDB *updateCert = NULL;
SDB *updateKey = NULL;
CK_RV crv2;
crv2 = sftkdbCall_open(confdir, certPrefix, keyPrefix, 8, 3, flags,
isFIPS, noCertDB ? NULL : &updateCert,
noKeyDB ? NULL : &updateKey);
if (crv2 == CKR_OK) {
if (*certDB) {
(*certDB)->update = updateCert;
(*certDB)->updateID = updateID && *updateID
? PORT_Strdup(updateID) : NULL;
updateCert->app_private = (*certDB);
}
if (*keyDB) {
PRBool tokenRemoved = PR_FALSE;
(*keyDB)->update = updateKey;
(*keyDB)->updateID = updateID && *updateID ?
PORT_Strdup(updateID) : NULL;
updateKey->app_private = (*keyDB);
(*keyDB)->updateDBIsInit = PR_TRUE;
(*keyDB)->updateDBIsInit =
(sftkdb_HasPasswordSet(*keyDB) == SECSuccess) ?
PR_TRUE : PR_FALSE;
/* if the password on the key db is NULL, kick off our update
* chain of events */
sftkdb_CheckPassword((*keyDB), "", &tokenRemoved);
} else {
/* we don't have a key DB, update the certificate DB now */
sftkdb_Update(*certDB, NULL);
}
}
}
done:
if (appName) {
PORT_Free(appName);
}
return forceOpen ? CKR_OK : crv;
}
CK_RV
sftkdb_Shutdown(void)
{
s_shutdown();
sftkdbCall_Shutdown();
return CKR_OK;
}
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