gecko/security/nss/lib/softoken/legacydb/lginit.c

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2008-06-06 05:40:11 -07:00
/*
* NSS utility functions
*
* ***** 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) 1994-2000
* 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 ***** */
/* $Id: lginit.c,v 1.14 2009/02/03 23:18:48 julien.pierre.boogz%sun.com Exp $ */
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#include "lowkeyi.h"
#include "pcert.h"
#include "keydbi.h"
#include "lgdb.h"
#include "secoid.h"
#include "prenv.h"
typedef struct LGPrivateStr {
NSSLOWCERTCertDBHandle *certDB;
NSSLOWKEYDBHandle *keyDB;
PRLock *dbLock;
PLHashTable *hashTable;
} LGPrivate;
static char *
lg_certdb_name_cb(void *arg, int dbVersion)
{
const char *configdir = (const char *)arg;
const char *dbver;
char *smpname = NULL;
char *dbname = NULL;
switch (dbVersion) {
case 8:
dbver = "8";
break;
case 7:
dbver = "7";
break;
case 6:
dbver = "6";
break;
case 5:
dbver = "5";
break;
case 4:
default:
dbver = "";
break;
}
/* make sure we return something allocated with PORT_ so we have properly
* matched frees at the end */
smpname = PR_smprintf(CERT_DB_FMT, configdir, dbver);
if (smpname) {
dbname = PORT_Strdup(smpname);
PR_smprintf_free(smpname);
}
return dbname;
}
static char *
lg_keydb_name_cb(void *arg, int dbVersion)
{
const char *configdir = (const char *)arg;
const char *dbver;
char *smpname = NULL;
char *dbname = NULL;
switch (dbVersion) {
case 4:
dbver = "4";
break;
case 3:
dbver = "3";
break;
case 1:
dbver = "1";
break;
case 2:
default:
dbver = "";
break;
}
smpname = PR_smprintf(KEY_DB_FMT, configdir, dbver);
if (smpname) {
dbname = PORT_Strdup(smpname);
PR_smprintf_free(smpname);
}
return dbname;
}
const char *
lg_EvaluateConfigDir(const char *configdir,char **appName)
{
if (PORT_Strncmp(configdir, MULTIACCESS, sizeof(MULTIACCESS)-1) == 0) {
char *cdir;
*appName = PORT_Strdup(configdir+sizeof(MULTIACCESS)-1);
if (*appName == NULL) {
return configdir;
}
cdir = *appName;
while (*cdir && *cdir != ':') {
cdir++;
}
if (*cdir == ':') {
*cdir = 0;
cdir++;
}
configdir = cdir;
}
return configdir;
}
static int rdbmapflags(int flags);
static rdbfunc lg_rdbfunc = NULL;
static rdbstatusfunc lg_rdbstatusfunc = NULL;
/* NOTE: SHLIB_SUFFIX is defined on the command line */
#define RDBLIB SHLIB_PREFIX"rdb."SHLIB_SUFFIX
DB * rdbopen(const char *appName, const char *prefix,
const char *type, int flags, int *status)
{
PRLibrary *lib;
DB *db;
char *disableUnload = NULL;
if (lg_rdbfunc) {
db = (*lg_rdbfunc)(appName,prefix,type,rdbmapflags(flags));
if (!db && status && lg_rdbstatusfunc) {
*status = (*lg_rdbstatusfunc)();
}
return db;
}
/*
* try to open the library.
*/
lib = PR_LoadLibrary(RDBLIB);
if (!lib) {
return NULL;
}
/* get the entry points */
lg_rdbstatusfunc = (rdbstatusfunc) PR_FindSymbol(lib,"rdbstatus");
lg_rdbfunc = (rdbfunc) PR_FindSymbol(lib,"rdbopen");
if (lg_rdbfunc) {
db = (*lg_rdbfunc)(appName,prefix,type,rdbmapflags(flags));
if (!db && status && lg_rdbstatusfunc) {
*status = (*lg_rdbstatusfunc)();
}
return db;
}
/* couldn't find the entry point, unload the library and fail */
disableUnload = PR_GetEnv("NSS_DISABLE_UNLOAD");
if (!disableUnload) {
PR_UnloadLibrary(lib);
}
return NULL;
}
/*
* the following data structures are from rdb.h.
*/
struct RDBStr {
DB db;
int (*xactstart)(DB *db);
int (*xactdone)(DB *db, PRBool abort);
int version;
int (*dbinitcomplete)(DB *db);
};
#define DB_RDB ((DBTYPE) 0xff)
#define RDB_RDONLY 1
#define RDB_RDWR 2
#define RDB_CREATE 4
static int
rdbmapflags(int flags) {
switch (flags) {
case NO_RDONLY:
return RDB_RDONLY;
case NO_RDWR:
return RDB_RDWR;
case NO_CREATE:
return RDB_CREATE;
default:
break;
}
return 0;
}
PRBool
db_IsRDB(DB *db)
{
return (PRBool) db->type == DB_RDB;
}
int
db_BeginTransaction(DB *db)
{
struct RDBStr *rdb = (struct RDBStr *)db;
if (db->type != DB_RDB) {
return 0;
}
return rdb->xactstart(db);
}
int
db_FinishTransaction(DB *db, PRBool abort)
{
struct RDBStr *rdb = (struct RDBStr *)db;
if (db->type != DB_RDB) {
return 0;
}
return rdb->xactdone(db, abort);
}
static DB *
lg_getRawDB(SDB *sdb)
{
NSSLOWCERTCertDBHandle *certDB;
NSSLOWKEYDBHandle *keyDB;
certDB = lg_getCertDB(sdb);
if (certDB) {
return certDB->permCertDB;
}
keyDB = lg_getKeyDB(sdb);
if (keyDB) {
return keyDB->db;
}
return NULL;
}
CK_RV
lg_Begin(SDB *sdb)
{
DB *db = lg_getRawDB(sdb);
int ret;
if (db == NULL) {
return CKR_GENERAL_ERROR; /* shouldn't happen */
}
ret = db_BeginTransaction(db);
if (ret != 0) {
return CKR_GENERAL_ERROR; /* could happen */
}
return CKR_OK;
}
CK_RV
lg_Commit(SDB *sdb)
{
DB *db = lg_getRawDB(sdb);
int ret;
if (db == NULL) {
return CKR_GENERAL_ERROR; /* shouldn't happen */
}
ret = db_FinishTransaction(db, PR_FALSE);
if (ret != 0) {
return CKR_GENERAL_ERROR; /* could happen */
}
return CKR_OK;
}
CK_RV
lg_Abort(SDB *sdb)
{
DB *db = lg_getRawDB(sdb);
int ret;
if (db == NULL) {
return CKR_GENERAL_ERROR; /* shouldn't happen */
}
ret = db_FinishTransaction(db, PR_TRUE);
if (ret != 0) {
return CKR_GENERAL_ERROR; /* could happen */
}
return CKR_OK;
}
int
db_InitComplete(DB *db)
{
struct RDBStr *rdb = (struct RDBStr *)db;
if (db->type != DB_RDB) {
return 0;
}
/* we should have added a version number to the RDBS structure. Since we
* didn't, we detect that we have and 'extended' structure if the rdbstatus
* func exists */
if (!lg_rdbstatusfunc) {
return 0;
}
return rdb->dbinitcomplete(db);
}
SECStatus
db_Copy(DB *dest,DB *src)
{
int ret;
DBT key,data;
ret = (*src->seq)(src, &key, &data, R_FIRST);
if (ret) {
return SECSuccess;
}
do {
(void)(*dest->put)(dest,&key,&data, R_NOOVERWRITE);
} while ( (*src->seq)(src, &key, &data, R_NEXT) == 0);
(void)(*dest->sync)(dest,0);
return SECSuccess;
}
static CK_RV
lg_OpenCertDB(const char * configdir, const char *prefix, PRBool readOnly,
NSSLOWCERTCertDBHandle **certdbPtr)
{
NSSLOWCERTCertDBHandle *certdb = NULL;
CK_RV crv = CKR_NETSCAPE_CERTDB_FAILED;
SECStatus rv;
char * name = NULL;
char * appName = NULL;
if (prefix == NULL) {
prefix = "";
}
configdir = lg_EvaluateConfigDir(configdir, &appName);
name = PR_smprintf("%s" PATH_SEPARATOR "%s",configdir,prefix);
if (name == NULL) goto loser;
certdb = (NSSLOWCERTCertDBHandle*)PORT_ZAlloc(sizeof(NSSLOWCERTCertDBHandle));
if (certdb == NULL)
goto loser;
certdb->ref = 1;
/* fix when we get the DB in */
rv = nsslowcert_OpenCertDB(certdb, readOnly, appName, prefix,
lg_certdb_name_cb, (void *)name, PR_FALSE);
if (rv == SECSuccess) {
crv = CKR_OK;
*certdbPtr = certdb;
certdb = NULL;
}
loser:
if (certdb) PR_Free(certdb);
if (name) PR_smprintf_free(name);
if (appName) PORT_Free(appName);
return crv;
}
static CK_RV
lg_OpenKeyDB(const char * configdir, const char *prefix, PRBool readOnly,
NSSLOWKEYDBHandle **keydbPtr)
{
NSSLOWKEYDBHandle *keydb;
char * name = NULL;
char * appName = NULL;
if (prefix == NULL) {
prefix = "";
}
configdir = lg_EvaluateConfigDir(configdir, &appName);
name = PR_smprintf("%s" PATH_SEPARATOR "%s",configdir,prefix);
if (name == NULL)
return CKR_HOST_MEMORY;
keydb = nsslowkey_OpenKeyDB(readOnly, appName, prefix,
lg_keydb_name_cb, (void *)name);
PR_smprintf_free(name);
if (appName) PORT_Free(appName);
if (keydb == NULL)
return CKR_NETSCAPE_KEYDB_FAILED;
*keydbPtr = keydb;
return CKR_OK;
}
/*
* Accessors for the private parts of the sdb structure.
*/
void
lg_DBLock(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
SKIP_AFTER_FORK(PR_Lock(lgdb_p->dbLock));
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}
void
lg_DBUnlock(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
SKIP_AFTER_FORK(PR_Unlock(lgdb_p->dbLock));
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}
PLHashTable *
lg_GetHashTable(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
return lgdb_p->hashTable;
}
NSSLOWCERTCertDBHandle *
lg_getCertDB(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
return lgdb_p->certDB;
}
NSSLOWKEYDBHandle *
lg_getKeyDB(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
return lgdb_p->keyDB;
}
PRBool parentForkedAfterC_Initialize;
void lg_SetForkState(PRBool forked)
{
parentForkedAfterC_Initialize = forked;
}
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CK_RV
lg_Close(SDB *sdb)
{
LGPrivate *lgdb_p = (LGPrivate *)sdb->private;
lg_ClearTokenKeyHashTable(sdb);
if (lgdb_p) {
if (lgdb_p->certDB) {
nsslowcert_ClosePermCertDB(lgdb_p->certDB);
} else if (lgdb_p->keyDB) {
nsslowkey_CloseKeyDB(lgdb_p->keyDB);
}
if (lgdb_p->dbLock) {
SKIP_AFTER_FORK(PR_DestroyLock(lgdb_p->dbLock));
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}
if (lgdb_p->hashTable) {
PL_HashTableDestroy(lgdb_p->hashTable);
}
PORT_Free(lgdb_p);
}
PORT_Free(sdb);
return CKR_OK;
}
static PLHashNumber
lg_HashNumber(const void *key)
{
return (PLHashNumber) key;
}
PRIntn
lg_CompareValues(const void *v1, const void *v2)
{
PLHashNumber value1 = (PLHashNumber) v1;
PLHashNumber value2 = (PLHashNumber) v2;
return (value1 == value2);
}
/*
* helper function to wrap a NSSLOWCERTCertDBHandle or a NSSLOWKEYDBHandle
* with and sdb structure.
*/
CK_RV
lg_init(SDB **pSdb, int flags, NSSLOWCERTCertDBHandle *certdbPtr,
NSSLOWKEYDBHandle *keydbPtr)
{
SDB *sdb = NULL;
LGPrivate *lgdb_p = NULL;
CK_RV error = CKR_HOST_MEMORY;
*pSdb = NULL;
sdb = (SDB *) PORT_Alloc(sizeof(SDB));
if (sdb == NULL) {
goto loser;
}
lgdb_p = (LGPrivate *) PORT_Alloc(sizeof(LGPrivate));
if (lgdb_p == NULL) {
goto loser;
}
/* invariant fields */
lgdb_p->certDB = certdbPtr;
lgdb_p->keyDB = keydbPtr;
lgdb_p->dbLock = PR_NewLock();
if (lgdb_p->dbLock == NULL) {
goto loser;
}
lgdb_p->hashTable = PL_NewHashTable(64, lg_HashNumber, lg_CompareValues,
SECITEM_HashCompare, NULL, 0);
if (lgdb_p->hashTable == NULL) {
goto loser;
}
sdb->sdb_type = SDB_LEGACY;
sdb->sdb_flags = flags;
sdb->private = lgdb_p;
sdb->sdb_FindObjectsInit = lg_FindObjectsInit;
sdb->sdb_FindObjects = lg_FindObjects;
sdb->sdb_FindObjectsFinal = lg_FindObjectsFinal;
sdb->sdb_GetAttributeValue = lg_GetAttributeValue;
sdb->sdb_SetAttributeValue = lg_SetAttributeValue;
sdb->sdb_CreateObject = lg_CreateObject;
sdb->sdb_DestroyObject = lg_DestroyObject;
sdb->sdb_GetMetaData = lg_GetMetaData;
sdb->sdb_PutMetaData = lg_PutMetaData;
sdb->sdb_Begin = lg_Begin;
sdb->sdb_Commit = lg_Commit;
sdb->sdb_Abort = lg_Abort;
sdb->sdb_Reset = lg_Reset;
sdb->sdb_Close = lg_Close;
sdb->sdb_SetForkState = lg_SetForkState;
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*pSdb = sdb;
return CKR_OK;
loser:
if (sdb) {
PORT_Free(sdb);
}
if (lgdb_p) {
if (lgdb_p->dbLock) {
PR_DestroyLock(lgdb_p->dbLock);
}
if (lgdb_p->hashTable) {
PL_HashTableDestroy(lgdb_p->hashTable);
}
PORT_Free(lgdb_p);
}
return error;
}
/*
* OK there are now lots of options here, lets go through them all:
*
* configdir - base directory where all the cert, key, and module datbases live.
* certPrefix - prefix added to the beginning of the cert database example: "
* "https-server1-"
* keyPrefix - prefix added to the beginning of the key database example: "
* "https-server1-"
* secmodName - name of the security module database (usually "secmod.db").
* readOnly - Boolean: true if the databases are to be openned read only.
* nocertdb - Don't open the cert DB and key DB's, just initialize the
* Volatile certdb.
* nomoddb - Don't open the security module DB, just initialize the
* PKCS #11 module.
* forceOpen - Continue to force initializations even if the databases cannot
* be opened.
*/
CK_RV
legacy_Open(const char *configdir, const char *certPrefix,
const char *keyPrefix, int certVersion, int keyVersion,
int flags, SDB **certDB, SDB **keyDB)
{
CK_RV crv = CKR_OK;
SECStatus rv;
PRBool readOnly = (flags == SDB_RDONLY)? PR_TRUE: PR_FALSE;
rv = SECOID_Init();
if (SECSuccess != rv) {
return CKR_DEVICE_ERROR;
}
nsslowcert_InitLocks();
if (keyDB) *keyDB = NULL;
if (certDB) *certDB = NULL;
if (certDB) {
NSSLOWCERTCertDBHandle *certdbPtr;
crv = lg_OpenCertDB(configdir, certPrefix, readOnly, &certdbPtr);
if (crv != CKR_OK) {
goto loser;
}
crv = lg_init(certDB, flags, certdbPtr, NULL);
if (crv != CKR_OK) {
nsslowcert_ClosePermCertDB(certdbPtr);
goto loser;
}
}
if (keyDB) {
NSSLOWKEYDBHandle *keydbPtr;
crv = lg_OpenKeyDB(configdir, keyPrefix, readOnly, &keydbPtr);
if (crv != CKR_OK) {
goto loser;
}
crv = lg_init(keyDB, flags, NULL, keydbPtr);
if (crv != CKR_OK) {
nsslowkey_CloseKeyDB(keydbPtr);
goto loser;
}
if (certDB && *certDB) {
LGPrivate *lgdb_p = (LGPrivate *)(*certDB)->private;
lgdb_p->keyDB = keydbPtr;
}
}
loser:
if (crv != CKR_OK) {
if (keyDB && *keyDB) {
lg_Close(*keyDB);
*keyDB = NULL;
}
if (certDB && *certDB) {
lg_Close(*certDB);
*certDB = NULL;
}
}
return crv;
}
CK_RV
legacy_Shutdown(PRBool forked)
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{
lg_SetForkState(forked);
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nsslowcert_DestroyFreeLists();
nsslowcert_DestroyGlobalLocks();
SECOID_Shutdown();
lg_SetForkState(PR_FALSE);
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return CKR_OK;
}