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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/. */
#include "pkcs11.h"
#ifndef DEVM_H
#include "devm.h"
#endif /* DEVM_H */
#ifndef CKHELPER_H
#include "ckhelper.h"
#endif /* CKHELPER_H */
#include "pk11pub.h"
/* measured in seconds */
#define NSSSLOT_TOKEN_DELAY_TIME 1
/* this should track global and per-transaction login information */
#define NSSSLOT_IS_FRIENDLY(slot) \
(slot->base.flags & NSSSLOT_FLAGS_FRIENDLY)
/* measured as interval */
static PRIntervalTime s_token_delay_time = 0;
NSS_IMPLEMENT PRStatus
nssSlot_Destroy(
NSSSlot *slot)
{
if (slot) {
if (PR_ATOMIC_DECREMENT(&slot->base.refCount) == 0) {
PZ_DestroyLock(slot->base.lock);
return nssArena_Destroy(slot->base.arena);
}
}
return PR_SUCCESS;
}
void
nssSlot_EnterMonitor(NSSSlot *slot)
{
if (slot->lock) {
PZ_Lock(slot->lock);
}
}
void
nssSlot_ExitMonitor(NSSSlot *slot)
{
if (slot->lock) {
PZ_Unlock(slot->lock);
}
}
NSS_IMPLEMENT void
NSSSlot_Destroy(
NSSSlot *slot)
{
(void)nssSlot_Destroy(slot);
}
NSS_IMPLEMENT NSSSlot *
nssSlot_AddRef(
NSSSlot *slot)
{
PR_ATOMIC_INCREMENT(&slot->base.refCount);
return slot;
}
NSS_IMPLEMENT NSSUTF8 *
nssSlot_GetName(
NSSSlot *slot)
{
return slot->base.name;
}
NSS_IMPLEMENT NSSUTF8 *
nssSlot_GetTokenName(
NSSSlot *slot)
{
return nssToken_GetName(slot->token);
}
NSS_IMPLEMENT void
nssSlot_ResetDelay(
NSSSlot *slot)
{
slot->lastTokenPing = 0;
}
static PRBool
within_token_delay_period(NSSSlot *slot)
{
PRIntervalTime time, lastTime;
/* Set the delay time for checking the token presence */
if (s_token_delay_time == 0) {
s_token_delay_time = PR_SecondsToInterval(NSSSLOT_TOKEN_DELAY_TIME);
}
time = PR_IntervalNow();
lastTime = slot->lastTokenPing;
if ((lastTime) && ((time - lastTime) < s_token_delay_time)) {
return PR_TRUE;
}
slot->lastTokenPing = time;
return PR_FALSE;
}
NSS_IMPLEMENT PRBool
nssSlot_IsTokenPresent(
NSSSlot *slot)
{
CK_RV ckrv;
PRStatus nssrv;
/* XXX */
nssSession *session;
CK_SLOT_INFO slotInfo;
void *epv;
/* permanent slots are always present unless they're disabled */
if (nssSlot_IsPermanent(slot)) {
return !PK11_IsDisabled(slot->pk11slot);
}
/* avoid repeated calls to check token status within set interval */
if (within_token_delay_period(slot)) {
return ((slot->ckFlags & CKF_TOKEN_PRESENT) != 0);
}
/* First obtain the slot info */
epv = slot->epv;
if (!epv) {
return PR_FALSE;
}
nssSlot_EnterMonitor(slot);
ckrv = CKAPI(epv)->C_GetSlotInfo(slot->slotID, &slotInfo);
nssSlot_ExitMonitor(slot);
if (ckrv != CKR_OK) {
slot->token->base.name[0] = 0; /* XXX */
return PR_FALSE;
}
slot->ckFlags = slotInfo.flags;
/* check for the presence of the token */
if ((slot->ckFlags & CKF_TOKEN_PRESENT) == 0) {
if (!slot->token) {
/* token was never present */
return PR_FALSE;
}
session = nssToken_GetDefaultSession(slot->token);
if (session) {
nssSession_EnterMonitor(session);
/* token is not present */
if (session->handle != CK_INVALID_SESSION) {
/* session is valid, close and invalidate it */
CKAPI(epv)
->C_CloseSession(session->handle);
session->handle = CK_INVALID_SESSION;
}
nssSession_ExitMonitor(session);
}
if (slot->token->base.name[0] != 0) {
/* notify the high-level cache that the token is removed */
slot->token->base.name[0] = 0; /* XXX */
nssToken_NotifyCertsNotVisible(slot->token);
}
slot->token->base.name[0] = 0; /* XXX */
/* clear the token cache */
nssToken_Remove(slot->token);
return PR_FALSE;
}
/* token is present, use the session info to determine if the card
* has been removed and reinserted.
*/
session = nssToken_GetDefaultSession(slot->token);
if (session) {
PRBool isPresent = PR_FALSE;
nssSession_EnterMonitor(session);
if (session->handle != CK_INVALID_SESSION) {
CK_SESSION_INFO sessionInfo;
ckrv = CKAPI(epv)->C_GetSessionInfo(session->handle, &sessionInfo);
if (ckrv != CKR_OK) {
/* session is screwy, close and invalidate it */
CKAPI(epv)
->C_CloseSession(session->handle);
session->handle = CK_INVALID_SESSION;
}
}
isPresent = session->handle != CK_INVALID_SESSION;
nssSession_ExitMonitor(session);
/* token not removed, finished */
if (isPresent)
return PR_TRUE;
}
/* the token has been removed, and reinserted, or the slot contains
* a token it doesn't recognize. invalidate all the old
* information we had on this token, if we can't refresh, clear
* the present flag */
nssToken_NotifyCertsNotVisible(slot->token);
nssToken_Remove(slot->token);
/* token has been removed, need to refresh with new session */
nssrv = nssSlot_Refresh(slot);
if (nssrv != PR_SUCCESS) {
slot->token->base.name[0] = 0; /* XXX */
slot->ckFlags &= ~CKF_TOKEN_PRESENT;
return PR_FALSE;
}
return PR_TRUE;
}
NSS_IMPLEMENT void *
nssSlot_GetCryptokiEPV(
NSSSlot *slot)
{
return slot->epv;
}
NSS_IMPLEMENT NSSToken *
nssSlot_GetToken(
NSSSlot *slot)
{
if (nssSlot_IsTokenPresent(slot)) {
return nssToken_AddRef(slot->token);
}
return (NSSToken *)NULL;
}
NSS_IMPLEMENT PRStatus
nssSession_EnterMonitor(
nssSession *s)
{
if (s->lock)
PZ_Lock(s->lock);
return PR_SUCCESS;
}
NSS_IMPLEMENT PRStatus
nssSession_ExitMonitor(
nssSession *s)
{
return (s->lock) ? PZ_Unlock(s->lock) : PR_SUCCESS;
}
NSS_EXTERN PRBool
nssSession_IsReadWrite(
nssSession *s)
{
return s->isRW;
}
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