--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nss/lib/pk11wrap/pk11slot.c	Mon Jul 28 10:47:06 2014 +0200
@@ -0,0 +1,2406 @@
+/* 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/. */
+/*
+ * Deal with PKCS #11 Slots.
+ */
+#include "seccomon.h"
+#include "secmod.h"
+#include "nssilock.h"
+#include "secmodi.h"
+#include "secmodti.h"
+#include "pkcs11t.h"
+#include "pk11func.h"
+#include "secitem.h"
+#include "secerr.h"
+
+#include "dev.h" 
+#include "dev3hack.h" 
+#include "pkim.h"
+#include "utilpars.h"
+
+
+/*************************************************************
+ * local static and global data
+ *************************************************************/
+
+/*
+ * This array helps parsing between names, mechanisms, and flags.
+ * to make the config files understand more entries, add them
+ * to this table.
+ */
+const PK11DefaultArrayEntry PK11_DefaultArray[] = {
+	{ "RSA", SECMOD_RSA_FLAG, CKM_RSA_PKCS },
+	{ "DSA", SECMOD_DSA_FLAG, CKM_DSA },
+	{ "ECC", SECMOD_ECC_FLAG, CKM_ECDSA },
+	{ "DH", SECMOD_DH_FLAG, CKM_DH_PKCS_DERIVE },
+	{ "RC2", SECMOD_RC2_FLAG, CKM_RC2_CBC },
+	{ "RC4", SECMOD_RC4_FLAG, CKM_RC4 },
+	{ "DES", SECMOD_DES_FLAG, CKM_DES_CBC },
+	{ "AES", SECMOD_AES_FLAG, CKM_AES_CBC },
+	{ "Camellia", SECMOD_CAMELLIA_FLAG, CKM_CAMELLIA_CBC },
+	{ "SEED", SECMOD_SEED_FLAG, CKM_SEED_CBC },
+	{ "RC5", SECMOD_RC5_FLAG, CKM_RC5_CBC },
+	{ "SHA-1", SECMOD_SHA1_FLAG, CKM_SHA_1 },
+/*	{ "SHA224", SECMOD_SHA256_FLAG, CKM_SHA224 }, */
+	{ "SHA256", SECMOD_SHA256_FLAG, CKM_SHA256 },
+/*	{ "SHA384", SECMOD_SHA512_FLAG, CKM_SHA384 }, */
+	{ "SHA512", SECMOD_SHA512_FLAG, CKM_SHA512 },
+	{ "MD5", SECMOD_MD5_FLAG, CKM_MD5 },
+	{ "MD2", SECMOD_MD2_FLAG, CKM_MD2 },
+	{ "SSL", SECMOD_SSL_FLAG, CKM_SSL3_PRE_MASTER_KEY_GEN },
+	{ "TLS", SECMOD_TLS_FLAG, CKM_TLS_MASTER_KEY_DERIVE },
+	{ "SKIPJACK", SECMOD_FORTEZZA_FLAG, CKM_SKIPJACK_CBC64 },
+	{ "Publicly-readable certs", SECMOD_FRIENDLY_FLAG, CKM_INVALID_MECHANISM },
+	{ "Random Num Generator", SECMOD_RANDOM_FLAG, CKM_FAKE_RANDOM },
+};
+const int num_pk11_default_mechanisms = 
+                sizeof(PK11_DefaultArray) / sizeof(PK11_DefaultArray[0]);
+
+const PK11DefaultArrayEntry *
+PK11_GetDefaultArray(int *size)
+{
+    if (size) {
+	*size = num_pk11_default_mechanisms;
+    }
+    return PK11_DefaultArray;
+}
+
+/*
+ * These  slotlists are lists of modules which provide default support for
+ *  a given algorithm or mechanism.
+ */
+static PK11SlotList 
+    pk11_seedSlotList,
+    pk11_camelliaSlotList,
+    pk11_aesSlotList,
+    pk11_desSlotList,
+    pk11_rc4SlotList,
+    pk11_rc2SlotList,
+    pk11_rc5SlotList,
+    pk11_sha1SlotList,
+    pk11_md5SlotList,
+    pk11_md2SlotList,
+    pk11_rsaSlotList,
+    pk11_dsaSlotList,
+    pk11_dhSlotList,
+    pk11_ecSlotList,
+    pk11_ideaSlotList,
+    pk11_sslSlotList,
+    pk11_tlsSlotList,
+    pk11_randomSlotList,
+    pk11_sha256SlotList,
+    pk11_sha512SlotList;	/* slots do SHA512 and SHA384 */
+
+/************************************************************
+ * Generic Slot List and Slot List element manipulations
+ ************************************************************/
+
+/*
+ * allocate a new list 
+ */
+PK11SlotList *
+PK11_NewSlotList(void)
+{
+    PK11SlotList *list;
+ 
+    list = (PK11SlotList *)PORT_Alloc(sizeof(PK11SlotList));
+    if (list == NULL) return NULL;
+    list->head = NULL;
+    list->tail = NULL;
+    list->lock = PZ_NewLock(nssILockList);
+    if (list->lock == NULL) {
+	PORT_Free(list);
+	return NULL;
+    }
+
+    return list;
+}
+
+/*
+ * free a list element when all the references go away.
+ */
+SECStatus
+PK11_FreeSlotListElement(PK11SlotList *list, PK11SlotListElement *le)
+{
+    PRBool freeit = PR_FALSE;
+
+    if (list == NULL || le == NULL) {
+	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+	return SECFailure;
+    }
+
+    PZ_Lock(list->lock);
+    if (le->refCount-- == 1) {
+	freeit = PR_TRUE;
+    }
+    PZ_Unlock(list->lock);
+    if (freeit) {
+    	PK11_FreeSlot(le->slot);
+	PORT_Free(le);
+    }
+    return SECSuccess;
+}
+
+static void
+pk11_FreeSlotListStatic(PK11SlotList *list)
+{
+    PK11SlotListElement *le, *next ;
+    if (list == NULL) return;
+
+    for (le = list->head ; le; le = next) {
+	next = le->next;
+	PK11_FreeSlotListElement(list,le);
+    }
+    if (list->lock) {
+    	PZ_DestroyLock(list->lock);
+    }
+    list->lock = NULL;
+    list->head = NULL;
+}
+
+/*
+ * if we are freeing the list, we must be the only ones with a pointer
+ * to the list.
+ */
+void
+PK11_FreeSlotList(PK11SlotList *list)
+{
+    pk11_FreeSlotListStatic(list);
+    PORT_Free(list);
+}
+
+/*
+ * add a slot to a list
+ * "slot" is the slot to be added. Ownership is not transferred.
+ * "sorted" indicates whether or not the slot should be inserted according to
+ *   cipherOrder of the associated module. PR_FALSE indicates that the slot
+ *   should be inserted to the head of the list.
+ */
+SECStatus
+PK11_AddSlotToList(PK11SlotList *list,PK11SlotInfo *slot, PRBool sorted)
+{
+    PK11SlotListElement *le;
+    PK11SlotListElement *element;
+
+    le = (PK11SlotListElement *) PORT_Alloc(sizeof(PK11SlotListElement));
+    if (le == NULL) return SECFailure;
+
+    le->slot = PK11_ReferenceSlot(slot);
+    le->prev = NULL;
+    le->refCount = 1;
+    PZ_Lock(list->lock);
+    element = list->head;
+    /* Insertion sort, with higher cipherOrders are sorted first in the list */
+    while (element && sorted && (element->slot->module->cipherOrder >
+                                 le->slot->module->cipherOrder)) {
+        element = element->next;
+    }
+    if (element) {
+        le->prev = element->prev;
+        element->prev = le;
+        le->next = element;
+    } else {
+        le->prev = list->tail;
+        le->next = NULL;
+        list->tail = le;
+    }
+    if (le->prev) le->prev->next = le;
+    if (list->head == element) list->head = le;
+    PZ_Unlock(list->lock);
+
+    return SECSuccess;
+}
+
+/*
+ * remove a slot entry from the list
+ */
+SECStatus
+PK11_DeleteSlotFromList(PK11SlotList *list,PK11SlotListElement *le)
+{
+    PZ_Lock(list->lock);
+    if (le->prev) le->prev->next = le->next; else list->head = le->next;
+    if (le->next) le->next->prev = le->prev; else list->tail = le->prev;
+    le->next = le->prev = NULL;
+    PZ_Unlock(list->lock);
+    PK11_FreeSlotListElement(list,le);
+    return SECSuccess;
+}
+
+/*
+ * Move a list to the end of the target list.
+ * NOTE: There is no locking here... This assumes BOTH lists are private copy
+ * lists. It also does not re-sort the target list.
+ */
+SECStatus
+pk11_MoveListToList(PK11SlotList *target,PK11SlotList *src)
+{
+    if (src->head == NULL) return SECSuccess;
+
+    if (target->tail == NULL) {
+	target->head = src->head;
+    } else {
+	target->tail->next = src->head;
+    }
+    src->head->prev = target->tail;
+    target->tail = src->tail;
+    src->head = src->tail = NULL;
+    return SECSuccess;
+}
+
+/*
+ * get an element from the list with a reference. You must own the list.
+ */
+PK11SlotListElement *
+PK11_GetFirstRef(PK11SlotList *list)
+{
+    PK11SlotListElement *le;
+
+    le = list->head;
+    if (le != NULL) (le)->refCount++;
+    return le;
+}
+
+/*
+ * get the next element from the list with a reference. You must own the list.
+ */
+PK11SlotListElement *
+PK11_GetNextRef(PK11SlotList *list, PK11SlotListElement *le, PRBool restart)
+{
+    PK11SlotListElement *new_le;
+    new_le = le->next;
+    if (new_le) new_le->refCount++;
+    PK11_FreeSlotListElement(list,le);
+    return new_le;
+}
+
+/*
+ * get an element safely from the list. This just makes sure that if
+ * this element is not deleted while we deal with it.
+ */
+PK11SlotListElement *
+PK11_GetFirstSafe(PK11SlotList *list)
+{
+    PK11SlotListElement *le;
+
+    PZ_Lock(list->lock);
+    le = list->head;
+    if (le != NULL) (le)->refCount++;
+    PZ_Unlock(list->lock);
+    return le;
+}
+
+/*
+ * NOTE: if this element gets deleted, we can no longer safely traverse using
+ * it's pointers. We can either terminate the loop, or restart from the
+ * beginning. This is controlled by the restart option.
+ */
+PK11SlotListElement *
+PK11_GetNextSafe(PK11SlotList *list, PK11SlotListElement *le, PRBool restart)
+{
+    PK11SlotListElement *new_le;
+    PZ_Lock(list->lock);
+    new_le = le->next;
+    if (le->next == NULL) {
+	/* if the prev and next fields are NULL then either this element
+	 * has been removed and we need to walk the list again (if restart
+	 * is true) or this was the only element on the list */
+	if ((le->prev == NULL) && restart &&  (list->head != le)) {
+	    new_le = list->head;
+	}
+    }
+    if (new_le) new_le->refCount++;
+    PZ_Unlock(list->lock);
+    PK11_FreeSlotListElement(list,le);
+    return new_le;
+}
+
+
+/*
+ * Find the element that holds this slot
+ */
+PK11SlotListElement *
+PK11_FindSlotElement(PK11SlotList *list,PK11SlotInfo *slot)
+{
+    PK11SlotListElement *le;
+
+    for (le = PK11_GetFirstSafe(list); le;
+			 	le = PK11_GetNextSafe(list,le,PR_TRUE)) {
+	if (le->slot == slot) return le;
+    }
+    return NULL;
+}
+
+/************************************************************
+ * Generic Slot Utilities
+ ************************************************************/
+/*
+ * Create a new slot structure
+ */
+PK11SlotInfo *
+PK11_NewSlotInfo(SECMODModule *mod)
+{
+    PK11SlotInfo *slot;
+
+    slot = (PK11SlotInfo *)PORT_Alloc(sizeof(PK11SlotInfo));
+    if (slot == NULL) return slot;
+
+    slot->sessionLock = mod->isThreadSafe ?
+	PZ_NewLock(nssILockSession) : mod->refLock;
+    if (slot->sessionLock == NULL) {
+	PORT_Free(slot);
+	return NULL;
+    }
+    slot->freeListLock = PZ_NewLock(nssILockFreelist);
+    if (slot->freeListLock == NULL) {
+	if (mod->isThreadSafe) {
+	    PZ_DestroyLock(slot->sessionLock);
+	}
+	PORT_Free(slot);
+	return NULL;
+    }
+    slot->freeSymKeysWithSessionHead = NULL;
+    slot->freeSymKeysHead = NULL;
+    slot->keyCount = 0;
+    slot->maxKeyCount = 0;
+    slot->functionList = NULL;
+    slot->needTest = PR_TRUE;
+    slot->isPerm = PR_FALSE;
+    slot->isHW = PR_FALSE;
+    slot->isInternal = PR_FALSE;
+    slot->isThreadSafe = PR_FALSE;
+    slot->disabled = PR_FALSE;
+    slot->series = 1;
+    slot->wrapKey = 0;
+    slot->wrapMechanism = CKM_INVALID_MECHANISM;
+    slot->refKeys[0] = CK_INVALID_HANDLE;
+    slot->reason = PK11_DIS_NONE;
+    slot->readOnly = PR_TRUE;
+    slot->needLogin = PR_FALSE;
+    slot->hasRandom = PR_FALSE;
+    slot->defRWSession = PR_FALSE;
+    slot->protectedAuthPath = PR_FALSE;
+    slot->flags = 0;
+    slot->session = CK_INVALID_SESSION;
+    slot->slotID = 0;
+    slot->defaultFlags = 0;
+    slot->refCount = 1;
+    slot->askpw = 0;
+    slot->timeout = 0;
+    slot->mechanismList = NULL;
+    slot->mechanismCount = 0;
+    slot->cert_array = NULL;
+    slot->cert_count = 0;
+    slot->slot_name[0] = 0;
+    slot->token_name[0] = 0;
+    PORT_Memset(slot->serial,' ',sizeof(slot->serial));
+    slot->module = NULL;
+    slot->authTransact = 0;
+    slot->authTime = LL_ZERO;
+    slot->minPassword = 0;
+    slot->maxPassword = 0;
+    slot->hasRootCerts = PR_FALSE;
+    slot->nssToken = NULL;
+    return slot;
+}
+    
+/* create a new reference to a slot so it doesn't go away */
+PK11SlotInfo *
+PK11_ReferenceSlot(PK11SlotInfo *slot)
+{
+    PR_ATOMIC_INCREMENT(&slot->refCount);
+    return slot;
+}
+
+/* Destroy all info on a slot we have built up */
+void
+PK11_DestroySlot(PK11SlotInfo *slot)
+{
+   /* free up the cached keys and sessions */
+   PK11_CleanKeyList(slot);
+   
+   /* free up all the sessions on this slot */
+   if (slot->functionList) {
+	PK11_GETTAB(slot)->C_CloseAllSessions(slot->slotID);
+   }
+
+   if (slot->mechanismList) {
+	PORT_Free(slot->mechanismList);
+   }
+   if (slot->isThreadSafe && slot->sessionLock) {
+	PZ_DestroyLock(slot->sessionLock);
+   }
+   slot->sessionLock = NULL;
+   if (slot->freeListLock) {
+	PZ_DestroyLock(slot->freeListLock);
+	slot->freeListLock = NULL;
+   }
+
+   /* finally Tell our parent module that we've gone away so it can unload */
+   if (slot->module) {
+	SECMOD_SlotDestroyModule(slot->module,PR_TRUE);
+   }
+
+   /* ok, well not quit finally... now we free the memory */
+   PORT_Free(slot);
+}
+
+
+/* We're all done with the slot, free it */
+void
+PK11_FreeSlot(PK11SlotInfo *slot)
+{
+    if (PR_ATOMIC_DECREMENT(&slot->refCount) == 0) {
+	PK11_DestroySlot(slot);
+    }
+}
+
+void
+PK11_EnterSlotMonitor(PK11SlotInfo *slot) {
+    PZ_Lock(slot->sessionLock);
+}
+
+void
+PK11_ExitSlotMonitor(PK11SlotInfo *slot) {
+    PZ_Unlock(slot->sessionLock);
+}
+
+/***********************************************************
+ * Functions to find specific slots.
+ ***********************************************************/
+PRBool
+SECMOD_HasRootCerts(void)
+{
+   SECMODModuleList *mlp;
+   SECMODModuleList *modules;
+   SECMODListLock *moduleLock = SECMOD_GetDefaultModuleListLock();
+   int i;
+   PRBool found = PR_FALSE;
+
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return found;
+    }
+
+   /* work through all the slots */
+   SECMOD_GetReadLock(moduleLock);
+   modules = SECMOD_GetDefaultModuleList();
+   for(mlp = modules; mlp != NULL; mlp = mlp->next) {
+	for (i=0; i < mlp->module->slotCount; i++) {
+	    PK11SlotInfo *tmpSlot = mlp->module->slots[i];
+	    if (PK11_IsPresent(tmpSlot)) {
+		if (tmpSlot->hasRootCerts) {
+		    found = PR_TRUE;
+		    break;
+		}
+	    }
+	}
+	if (found) break;
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+
+    return found;
+}
+
+/***********************************************************
+ * Functions to find specific slots.
+ ***********************************************************/
+PK11SlotList *
+PK11_FindSlotsByNames(const char *dllName, const char* slotName,
+                        const char* tokenName, PRBool presentOnly)
+{
+    SECMODModuleList *mlp;
+    SECMODModuleList *modules;
+    SECMODListLock *moduleLock = SECMOD_GetDefaultModuleListLock();
+    int i;
+    PK11SlotList* slotList = NULL;
+    PRUint32 slotcount = 0;
+    SECStatus rv = SECSuccess;
+
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return slotList;
+    }
+
+    slotList = PK11_NewSlotList();
+    if (!slotList) {
+        PORT_SetError(SEC_ERROR_NO_MEMORY);
+        return slotList;
+    }
+
+    if ( ((NULL == dllName) || (0 == *dllName)) &&
+        ((NULL == slotName) || (0 == *slotName)) &&
+        ((NULL == tokenName) || (0 == *tokenName)) ) {
+        /* default to softoken */
+        PK11_AddSlotToList(slotList, PK11_GetInternalKeySlot(), PR_TRUE);
+        return slotList;
+    }
+
+    /* work through all the slots */
+    SECMOD_GetReadLock(moduleLock);
+    modules = SECMOD_GetDefaultModuleList();
+    for (mlp = modules; mlp != NULL; mlp = mlp->next) {
+        PORT_Assert(mlp->module);
+        if (!mlp->module) {
+            rv = SECFailure;
+            break;
+        }
+        if ((!dllName) || (mlp->module->dllName &&
+            (0 == PORT_Strcmp(mlp->module->dllName, dllName)))) {
+            for (i=0; i < mlp->module->slotCount; i++) {
+                PK11SlotInfo *tmpSlot = (mlp->module->slots?mlp->module->slots[i]:NULL);
+                PORT_Assert(tmpSlot);
+                if (!tmpSlot) {
+                    rv = SECFailure;
+                    break;
+                }
+                if ((PR_FALSE == presentOnly || PK11_IsPresent(tmpSlot)) &&
+                    ( (!tokenName) || (tmpSlot->token_name &&
+                    (0==PORT_Strcmp(tmpSlot->token_name, tokenName)))) &&
+                    ( (!slotName) || (tmpSlot->slot_name &&
+                    (0==PORT_Strcmp(tmpSlot->slot_name, slotName)))) ) {
+                    if (tmpSlot) {
+                        PK11_AddSlotToList(slotList, tmpSlot, PR_TRUE);
+                        slotcount++;
+                    }
+                }
+            }
+        }
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+
+    if ( (0 == slotcount) || (SECFailure == rv) ) {
+        PORT_SetError(SEC_ERROR_NO_TOKEN);
+        PK11_FreeSlotList(slotList);
+        slotList = NULL;
+    }
+
+    if (SECFailure == rv) {
+        PORT_SetError(SEC_ERROR_LIBRARY_FAILURE);
+    }
+
+    return slotList;
+}
+
+PK11SlotInfo *
+PK11_FindSlotByName(const char *name)
+{
+   SECMODModuleList *mlp;
+   SECMODModuleList *modules;
+   SECMODListLock *moduleLock = SECMOD_GetDefaultModuleListLock();
+   int i;
+   PK11SlotInfo *slot = NULL;
+
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return slot;
+    }
+   if ((name == NULL) || (*name == 0)) {
+	return PK11_GetInternalKeySlot();
+   }
+
+   /* work through all the slots */
+   SECMOD_GetReadLock(moduleLock);
+   modules = SECMOD_GetDefaultModuleList();
+   for(mlp = modules; mlp != NULL; mlp = mlp->next) {
+	for (i=0; i < mlp->module->slotCount; i++) {
+	    PK11SlotInfo *tmpSlot = mlp->module->slots[i];
+	    if (PK11_IsPresent(tmpSlot)) {
+		if (PORT_Strcmp(tmpSlot->token_name,name) == 0) {
+		    slot = PK11_ReferenceSlot(tmpSlot);
+		    break;
+		}
+	    }
+	}
+	if (slot != NULL) break;
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+
+    if (slot == NULL) {
+	PORT_SetError(SEC_ERROR_NO_TOKEN);
+    }
+
+    return slot;
+}
+
+
+PK11SlotInfo *
+PK11_FindSlotBySerial(char *serial)
+{
+   SECMODModuleList *mlp;
+   SECMODModuleList *modules;
+   SECMODListLock *moduleLock = SECMOD_GetDefaultModuleListLock();
+   int i;
+   PK11SlotInfo *slot = NULL;
+
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return slot;
+    }
+   /* work through all the slots */
+   SECMOD_GetReadLock(moduleLock);
+   modules = SECMOD_GetDefaultModuleList();
+   for(mlp = modules; mlp != NULL; mlp = mlp->next) {
+	for (i=0; i < mlp->module->slotCount; i++) {
+	    PK11SlotInfo *tmpSlot = mlp->module->slots[i];
+	    if (PK11_IsPresent(tmpSlot)) {
+		if (PORT_Memcmp(tmpSlot->serial,serial,
+					sizeof(tmpSlot->serial)) == 0) {
+		    slot = PK11_ReferenceSlot(tmpSlot);
+		    break;
+		}
+	    }
+	}
+	if (slot != NULL) break;
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+
+    if (slot == NULL) {
+	PORT_SetError(SEC_ERROR_NO_TOKEN);
+    }
+
+    return slot;
+}
+
+/*
+ * notification stub. If we ever get interested in any events that
+ * the pkcs11 functions may pass back to use, we can catch them here...
+ * currently pdata is a slotinfo structure.
+ */
+CK_RV pk11_notify(CK_SESSION_HANDLE session, CK_NOTIFICATION event,
+							 CK_VOID_PTR pdata)
+{
+    return CKR_OK;
+}
+
+/*
+ * grab a new RW session
+ * !!! has a side effect of grabbing the Monitor if either the slot's default
+ * session is RW or the slot is not thread safe. Monitor is release in function
+ * below
+ */
+CK_SESSION_HANDLE PK11_GetRWSession(PK11SlotInfo *slot)
+{
+    CK_SESSION_HANDLE rwsession;
+    CK_RV crv;
+    PRBool haveMonitor = PR_FALSE;
+
+    if (!slot->isThreadSafe || slot->defRWSession) {
+    	PK11_EnterSlotMonitor(slot);
+	haveMonitor = PR_TRUE;
+    }
+    if (slot->defRWSession) {
+	PORT_Assert(slot->session != CK_INVALID_SESSION);
+	if (slot->session != CK_INVALID_SESSION) 
+	    return slot->session;
+    }
+
+    crv = PK11_GETTAB(slot)->C_OpenSession(slot->slotID,
+				CKF_RW_SESSION|CKF_SERIAL_SESSION,
+				  	  slot, pk11_notify,&rwsession);
+    PORT_Assert(rwsession != CK_INVALID_SESSION || crv != CKR_OK);
+    if (crv != CKR_OK || rwsession == CK_INVALID_SESSION) {
+	if (crv == CKR_OK) 
+	    crv = CKR_DEVICE_ERROR;
+	if (haveMonitor)
+	    PK11_ExitSlotMonitor(slot);
+	PORT_SetError(PK11_MapError(crv));
+	return CK_INVALID_SESSION;
+    }
+    if (slot->defRWSession) { /* we have the monitor */
+    	slot->session = rwsession;
+    }
+    return rwsession;
+}
+
+PRBool
+PK11_RWSessionHasLock(PK11SlotInfo *slot,CK_SESSION_HANDLE session_handle) 
+{
+    PRBool hasLock;
+    hasLock = (PRBool)(!slot->isThreadSafe || 
+    	      (slot->defRWSession && slot->session != CK_INVALID_SESSION));
+    return hasLock;
+}
+
+static PRBool
+pk11_RWSessionIsDefault(PK11SlotInfo *slot,CK_SESSION_HANDLE rwsession)
+{
+    PRBool isDefault;
+    isDefault = (PRBool)(slot->session == rwsession &&
+    	                 slot->defRWSession && 
+			 slot->session != CK_INVALID_SESSION);
+    return isDefault;
+}
+
+/*
+ * close the rwsession and restore our readonly session
+ * !!! has a side effect of releasing the Monitor if either the slot's default
+ * session is RW or the slot is not thread safe.
+ */
+void
+PK11_RestoreROSession(PK11SlotInfo *slot,CK_SESSION_HANDLE rwsession)
+{
+    PORT_Assert(rwsession != CK_INVALID_SESSION);
+    if (rwsession != CK_INVALID_SESSION) {
+    	PRBool doExit = PK11_RWSessionHasLock(slot, rwsession);
+	if (!pk11_RWSessionIsDefault(slot, rwsession))
+	    PK11_GETTAB(slot)->C_CloseSession(rwsession);
+	if (doExit)
+	    PK11_ExitSlotMonitor(slot);
+    }
+}
+
+/************************************************************
+ * Manage the built-In Slot Lists
+ ************************************************************/
+
+/* Init the static built int slot list (should actually integrate
+ * with PK11_NewSlotList */
+static void
+pk11_InitSlotListStatic(PK11SlotList *list)
+{
+    list->lock = PZ_NewLock(nssILockList);
+    list->head = NULL;
+}
+
+
+/* initialize the system slotlists */
+SECStatus
+PK11_InitSlotLists(void)
+{
+    pk11_InitSlotListStatic(&pk11_seedSlotList);
+    pk11_InitSlotListStatic(&pk11_camelliaSlotList);
+    pk11_InitSlotListStatic(&pk11_aesSlotList);
+    pk11_InitSlotListStatic(&pk11_desSlotList);
+    pk11_InitSlotListStatic(&pk11_rc4SlotList);
+    pk11_InitSlotListStatic(&pk11_rc2SlotList);
+    pk11_InitSlotListStatic(&pk11_rc5SlotList);
+    pk11_InitSlotListStatic(&pk11_md5SlotList);
+    pk11_InitSlotListStatic(&pk11_md2SlotList);
+    pk11_InitSlotListStatic(&pk11_sha1SlotList);
+    pk11_InitSlotListStatic(&pk11_rsaSlotList);
+    pk11_InitSlotListStatic(&pk11_dsaSlotList);
+    pk11_InitSlotListStatic(&pk11_dhSlotList);
+    pk11_InitSlotListStatic(&pk11_ecSlotList);
+    pk11_InitSlotListStatic(&pk11_ideaSlotList);
+    pk11_InitSlotListStatic(&pk11_sslSlotList);
+    pk11_InitSlotListStatic(&pk11_tlsSlotList);
+    pk11_InitSlotListStatic(&pk11_randomSlotList);
+    pk11_InitSlotListStatic(&pk11_sha256SlotList);
+    pk11_InitSlotListStatic(&pk11_sha512SlotList);
+    return SECSuccess;
+}
+
+void
+PK11_DestroySlotLists(void)
+{
+    pk11_FreeSlotListStatic(&pk11_seedSlotList);
+    pk11_FreeSlotListStatic(&pk11_camelliaSlotList);
+    pk11_FreeSlotListStatic(&pk11_aesSlotList);
+    pk11_FreeSlotListStatic(&pk11_desSlotList);
+    pk11_FreeSlotListStatic(&pk11_rc4SlotList);
+    pk11_FreeSlotListStatic(&pk11_rc2SlotList);
+    pk11_FreeSlotListStatic(&pk11_rc5SlotList);
+    pk11_FreeSlotListStatic(&pk11_md5SlotList);
+    pk11_FreeSlotListStatic(&pk11_md2SlotList);
+    pk11_FreeSlotListStatic(&pk11_sha1SlotList);
+    pk11_FreeSlotListStatic(&pk11_rsaSlotList);
+    pk11_FreeSlotListStatic(&pk11_dsaSlotList);
+    pk11_FreeSlotListStatic(&pk11_dhSlotList);
+    pk11_FreeSlotListStatic(&pk11_ecSlotList);
+    pk11_FreeSlotListStatic(&pk11_ideaSlotList);
+    pk11_FreeSlotListStatic(&pk11_sslSlotList);
+    pk11_FreeSlotListStatic(&pk11_tlsSlotList);
+    pk11_FreeSlotListStatic(&pk11_randomSlotList);
+    pk11_FreeSlotListStatic(&pk11_sha256SlotList);
+    pk11_FreeSlotListStatic(&pk11_sha512SlotList);
+    return;
+}
+
+/* return a system slot list based on mechanism */
+PK11SlotList *
+PK11_GetSlotList(CK_MECHANISM_TYPE type)
+{
+/* XXX a workaround for Bugzilla bug #55267 */
+#if defined(HPUX) && defined(__LP64__)
+    if (CKM_INVALID_MECHANISM == type)
+        return NULL;
+#endif
+    switch (type) {
+    case CKM_SEED_CBC:
+    case CKM_SEED_ECB:
+	return &pk11_seedSlotList;
+    case CKM_CAMELLIA_CBC:
+    case CKM_CAMELLIA_ECB:
+	return &pk11_camelliaSlotList;
+    case CKM_AES_CBC:
+    case CKM_AES_CCM:
+    case CKM_AES_CTR:
+    case CKM_AES_CTS:
+    case CKM_AES_GCM:
+    case CKM_AES_ECB:
+	return &pk11_aesSlotList;
+    case CKM_DES_CBC:
+    case CKM_DES_ECB:
+    case CKM_DES3_ECB:
+    case CKM_DES3_CBC:
+	return &pk11_desSlotList;
+    case CKM_RC4:
+	return &pk11_rc4SlotList;
+    case CKM_RC5_CBC:
+	return &pk11_rc5SlotList;
+    case CKM_SHA_1:
+	return &pk11_sha1SlotList;
+    case CKM_SHA224:
+    case CKM_SHA256:
+	return &pk11_sha256SlotList;
+    case CKM_SHA384:
+    case CKM_SHA512:
+	return &pk11_sha512SlotList;
+    case CKM_MD5:
+	return &pk11_md5SlotList;
+    case CKM_MD2:
+	return &pk11_md2SlotList;
+    case CKM_RC2_ECB:
+    case CKM_RC2_CBC:
+	return &pk11_rc2SlotList;
+    case CKM_RSA_PKCS:
+    case CKM_RSA_PKCS_KEY_PAIR_GEN:
+    case CKM_RSA_X_509:
+	return &pk11_rsaSlotList;
+    case CKM_DSA:
+	return &pk11_dsaSlotList;
+    case CKM_DH_PKCS_KEY_PAIR_GEN:
+    case CKM_DH_PKCS_DERIVE:
+	return &pk11_dhSlotList;
+    case CKM_ECDSA:
+    case CKM_ECDSA_SHA1:
+    case CKM_EC_KEY_PAIR_GEN: /* aka CKM_ECDSA_KEY_PAIR_GEN */
+    case CKM_ECDH1_DERIVE:
+	return &pk11_ecSlotList;
+    case CKM_SSL3_PRE_MASTER_KEY_GEN:
+    case CKM_SSL3_MASTER_KEY_DERIVE:
+    case CKM_SSL3_SHA1_MAC:
+    case CKM_SSL3_MD5_MAC:
+	return &pk11_sslSlotList;
+    case CKM_TLS_MASTER_KEY_DERIVE:
+    case CKM_TLS_KEY_AND_MAC_DERIVE:
+    case CKM_NSS_TLS_KEY_AND_MAC_DERIVE_SHA256:
+	return &pk11_tlsSlotList;
+    case CKM_IDEA_CBC:
+    case CKM_IDEA_ECB:
+	return &pk11_ideaSlotList;
+    case CKM_FAKE_RANDOM:
+	return &pk11_randomSlotList;
+    }
+    return NULL;
+}
+
+/*
+ * load the static SlotInfo structures used to select a PKCS11 slot.
+ * preSlotInfo has a list of all the default flags for the slots on this
+ * module.
+ */
+void
+PK11_LoadSlotList(PK11SlotInfo *slot, PK11PreSlotInfo *psi, int count)
+{
+    int i;
+
+    for (i=0; i < count; i++) {
+	if (psi[i].slotID == slot->slotID)
+	    break;
+    }
+
+    if (i == count) return;
+
+    slot->defaultFlags = psi[i].defaultFlags;
+    slot->askpw = psi[i].askpw;
+    slot->timeout = psi[i].timeout;
+    slot->hasRootCerts = psi[i].hasRootCerts;
+
+    /* if the slot is already disabled, don't load them into the
+     * default slot lists. We get here so we can save the default
+     * list value. */
+    if (slot->disabled) return;
+
+    /* if the user has disabled us, don't load us in */
+    if (slot->defaultFlags & PK11_DISABLE_FLAG) {
+	slot->disabled = PR_TRUE;
+	slot->reason = PK11_DIS_USER_SELECTED;
+	/* free up sessions and things?? */
+	return;
+    }
+
+    for (i=0; i < num_pk11_default_mechanisms; i++) {
+	if (slot->defaultFlags & PK11_DefaultArray[i].flag) {
+	    CK_MECHANISM_TYPE mechanism = PK11_DefaultArray[i].mechanism;
+	    PK11SlotList *slotList = PK11_GetSlotList(mechanism);
+
+	    if (slotList) PK11_AddSlotToList(slotList,slot,PR_FALSE);
+	}
+    }
+
+    return;
+}
+
+
+/*
+ * update a slot to its new attribute according to the slot list
+ * returns: SECSuccess if nothing to do or add/delete is successful
+ */
+SECStatus
+PK11_UpdateSlotAttribute(PK11SlotInfo *slot,
+                         const PK11DefaultArrayEntry *entry,
+                         PRBool add)
+                         /* add: PR_TRUE if want to turn on */
+{
+    SECStatus result = SECSuccess;
+    PK11SlotList *slotList = PK11_GetSlotList(entry->mechanism);
+
+    if (add) { /* trying to turn on a mechanism */
+                 
+        /* turn on the default flag in the slot */
+        slot->defaultFlags |= entry->flag;
+        
+        /* add this slot to the list */
+        if (slotList!=NULL)
+            result = PK11_AddSlotToList(slotList, slot, PR_FALSE);
+        
+    } else { /* trying to turn off */
+            
+        /* turn OFF the flag in the slot */ 
+        slot->defaultFlags &= ~entry->flag;
+        
+        if (slotList) {
+            /* find the element in the list & delete it */
+            PK11SlotListElement *le = PK11_FindSlotElement(slotList, slot);
+
+            /* remove the slot from the list */
+            if (le)
+                result = PK11_DeleteSlotFromList(slotList, le);
+        }
+    }
+    return result;
+}
+
+/*
+ * clear a slot off of all of it's default list
+ */
+void
+PK11_ClearSlotList(PK11SlotInfo *slot)
+{
+    int i;
+
+    if (slot->disabled) return;
+    if (slot->defaultFlags == 0) return;
+
+    for (i=0; i < num_pk11_default_mechanisms; i++) {
+	if (slot->defaultFlags & PK11_DefaultArray[i].flag) {
+	    CK_MECHANISM_TYPE mechanism = PK11_DefaultArray[i].mechanism;
+	    PK11SlotList *slotList = PK11_GetSlotList(mechanism);
+	    PK11SlotListElement *le = NULL;
+
+	    if (slotList) le = PK11_FindSlotElement(slotList,slot);
+
+	    if (le) {
+		PK11_DeleteSlotFromList(slotList,le);
+		PK11_FreeSlotListElement(slotList,le);
+	    }
+	}
+    }
+}
+
+
+/******************************************************************
+ *           Slot initialization
+ ******************************************************************/
+/*
+ * turn a PKCS11 Static Label into a string
+ */
+char *
+PK11_MakeString(PLArenaPool *arena,char *space,
+					char *staticString,int stringLen)
+{
+	int i;
+	char *newString;
+	for(i=(stringLen-1); i >= 0; i--) {
+	  if (staticString[i] != ' ') break;
+	}
+	/* move i to point to the last space */
+	i++;
+	if (arena) {
+	    newString = (char*)PORT_ArenaAlloc(arena,i+1 /* space for NULL */);
+	} else if (space) {
+	    newString = space;
+	} else {
+	    newString = (char*)PORT_Alloc(i+1 /* space for NULL */);
+	}
+	if (newString == NULL) return NULL;
+
+	if (i) PORT_Memcpy(newString,staticString, i);
+	newString[i] = 0;
+
+	return newString;
+}
+
+/*
+ * Reads in the slots mechanism list for later use
+ */
+SECStatus
+PK11_ReadMechanismList(PK11SlotInfo *slot)
+{
+    CK_ULONG count;
+    CK_RV crv;
+    PRUint32 i;
+
+    if (slot->mechanismList) {
+	PORT_Free(slot->mechanismList);
+	slot->mechanismList = NULL;
+    }
+    slot->mechanismCount = 0;
+
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_GetMechanismList(slot->slotID,NULL,&count);
+    if (crv != CKR_OK) {
+	if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+
+    slot->mechanismList = (CK_MECHANISM_TYPE *)
+			    PORT_Alloc(count *sizeof(CK_MECHANISM_TYPE));
+    if (slot->mechanismList == NULL) {
+	if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	return SECFailure;
+    }
+    crv = PK11_GETTAB(slot)->C_GetMechanismList(slot->slotID,
+						slot->mechanismList, &count);
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_Free(slot->mechanismList);
+	slot->mechanismList = NULL;
+	PORT_SetError(PK11_MapError(crv));
+	return SECSuccess;
+    }
+    slot->mechanismCount = count;
+    PORT_Memset(slot->mechanismBits, 0, sizeof(slot->mechanismBits));
+
+    for (i=0; i < count; i++) {
+	CK_MECHANISM_TYPE mech = slot->mechanismList[i];
+	if (mech < 0x7ff) {
+	    slot->mechanismBits[mech & 0xff] |= 1 << (mech >> 8);
+	}
+    }
+    return SECSuccess;
+}
+
+/*
+ * initialize a new token
+ * unlike initialize slot, this can be called multiple times in the lifetime
+ * of NSS. It reads the information associated with a card or token,
+ * that is not going to change unless the card or token changes.
+ */
+SECStatus
+PK11_InitToken(PK11SlotInfo *slot, PRBool loadCerts)
+{
+    CK_TOKEN_INFO tokenInfo;
+    CK_RV crv;
+    char *tmp;
+    SECStatus rv;
+    PRStatus status;
+
+    /* set the slot flags to the current token values */
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_GetTokenInfo(slot->slotID,&tokenInfo);
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+
+    /* set the slot flags to the current token values */
+    slot->series++; /* allow other objects to detect that the 
+		      * slot is different */
+    slot->flags = tokenInfo.flags;
+    slot->needLogin = ((tokenInfo.flags & CKF_LOGIN_REQUIRED) ? 
+							PR_TRUE : PR_FALSE);
+    slot->readOnly = ((tokenInfo.flags & CKF_WRITE_PROTECTED) ? 
+							PR_TRUE : PR_FALSE);
+	
+	 
+    slot->hasRandom = ((tokenInfo.flags & CKF_RNG) ? PR_TRUE : PR_FALSE);
+    slot->protectedAuthPath =
+    		((tokenInfo.flags & CKF_PROTECTED_AUTHENTICATION_PATH) 
+	 						? PR_TRUE : PR_FALSE);
+    slot->lastLoginCheck = 0;
+    slot->lastState = 0;
+    /* on some platforms Active Card incorrectly sets the 
+     * CKF_PROTECTED_AUTHENTICATION_PATH bit when it doesn't mean to. */
+    if (slot->isActiveCard) {
+	slot->protectedAuthPath = PR_FALSE;
+    }
+    tmp = PK11_MakeString(NULL,slot->token_name,
+			(char *)tokenInfo.label, sizeof(tokenInfo.label));
+    slot->minPassword = tokenInfo.ulMinPinLen;
+    slot->maxPassword = tokenInfo.ulMaxPinLen;
+    PORT_Memcpy(slot->serial,tokenInfo.serialNumber,sizeof(slot->serial));
+
+    nssToken_UpdateName(slot->nssToken);
+
+    slot->defRWSession = (PRBool)((!slot->readOnly) && 
+					(tokenInfo.ulMaxSessionCount == 1));
+    rv = PK11_ReadMechanismList(slot);
+    if (rv != SECSuccess) return rv;
+
+    slot->hasRSAInfo = PR_FALSE;
+    slot->RSAInfoFlags = 0;
+
+    /* initialize the maxKeyCount value */
+    if (tokenInfo.ulMaxSessionCount == 0) {
+	slot->maxKeyCount = 800; /* should be #define or a config param */
+    } else if (tokenInfo.ulMaxSessionCount < 20) {
+	/* don't have enough sessions to keep that many keys around */
+	slot->maxKeyCount = 0;
+    } else {
+	slot->maxKeyCount = tokenInfo.ulMaxSessionCount/2;
+    }
+
+    /* Make sure our session handle is valid */
+    if (slot->session == CK_INVALID_SESSION) {
+	/* we know we don't have a valid session, go get one */
+	CK_SESSION_HANDLE session;
+
+	/* session should be Readonly, serial */
+	if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+	crv = PK11_GETTAB(slot)->C_OpenSession(slot->slotID,
+	      (slot->defRWSession ? CKF_RW_SESSION : 0) | CKF_SERIAL_SESSION,
+				  slot,pk11_notify,&session);
+	if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	if (crv != CKR_OK) {
+	    PORT_SetError(PK11_MapError(crv));
+	    return SECFailure;
+	}
+	slot->session = session;
+    } else {
+	/* The session we have may be defunct (the token associated with it)
+	 * has been removed   */
+	CK_SESSION_INFO sessionInfo;
+
+	if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+	crv = PK11_GETTAB(slot)->C_GetSessionInfo(slot->session,&sessionInfo);
+        if (crv == CKR_DEVICE_ERROR) {
+	    PK11_GETTAB(slot)->C_CloseSession(slot->session);
+	    crv = CKR_SESSION_CLOSED;
+	}
+	if ((crv==CKR_SESSION_CLOSED) || (crv==CKR_SESSION_HANDLE_INVALID)) {
+	    crv =PK11_GETTAB(slot)->C_OpenSession(slot->slotID,
+	      (slot->defRWSession ? CKF_RW_SESSION : 0) | CKF_SERIAL_SESSION,
+					slot,pk11_notify,&slot->session);
+	    if (crv != CKR_OK) {
+	        PORT_SetError(PK11_MapError(crv));
+		slot->session = CK_INVALID_SESSION;
+		if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+		return SECFailure;
+	    }
+	}
+	if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    }
+
+    status = nssToken_Refresh(slot->nssToken);
+    if (status != PR_SUCCESS)
+    	return SECFailure;
+
+    if (!(slot->isInternal) && (slot->hasRandom)) {
+	/* if this slot has a random number generater, use it to add entropy
+	 * to the internal slot. */
+	PK11SlotInfo *int_slot = PK11_GetInternalSlot();
+
+	if (int_slot) {
+	    unsigned char random_bytes[32];
+
+	    /* if this slot can issue random numbers, get some entropy from
+	     * that random number generater and give it to our internal token.
+	     */
+	    PK11_EnterSlotMonitor(slot);
+	    crv = PK11_GETTAB(slot)->C_GenerateRandom
+			(slot->session,random_bytes, sizeof(random_bytes));
+	    PK11_ExitSlotMonitor(slot);
+	    if (crv == CKR_OK) {
+	        PK11_EnterSlotMonitor(int_slot);
+		PK11_GETTAB(int_slot)->C_SeedRandom(int_slot->session,
+					random_bytes, sizeof(random_bytes));
+	        PK11_ExitSlotMonitor(int_slot);
+	    }
+
+	    /* Now return the favor and send entropy to the token's random 
+	     * number generater */
+	    PK11_EnterSlotMonitor(int_slot);
+	    crv = PK11_GETTAB(int_slot)->C_GenerateRandom(int_slot->session,
+					random_bytes, sizeof(random_bytes));
+	    PK11_ExitSlotMonitor(int_slot);
+	    if (crv == CKR_OK) {
+	        PK11_EnterSlotMonitor(slot);
+		crv = PK11_GETTAB(slot)->C_SeedRandom(slot->session,
+					random_bytes, sizeof(random_bytes));
+	        PK11_ExitSlotMonitor(slot);
+	    }
+	    PK11_FreeSlot(int_slot);
+	}
+    }
+    /* work around a problem in softoken where it incorrectly
+     * reports databases opened read only as read/write. */
+    if (slot->isInternal && !slot->readOnly) {
+	CK_SESSION_HANDLE session = CK_INVALID_SESSION;
+
+	/* try to open a R/W session */
+	crv =PK11_GETTAB(slot)->C_OpenSession(slot->slotID,
+	      CKF_RW_SESSION|CKF_SERIAL_SESSION, slot, pk11_notify ,&session);
+	/* what a well behaved token should return if you open 
+	 * a RW session on a read only token */
+	if (crv == CKR_TOKEN_WRITE_PROTECTED) {
+	    slot->readOnly = PR_TRUE;
+	} else if (crv == CKR_OK) {
+	    CK_SESSION_INFO sessionInfo;
+
+	    /* Because of a second bug in softoken, which silently returns
+	     * a RO session, we need to check what type of session we got. */
+	    crv = PK11_GETTAB(slot)->C_GetSessionInfo(session, &sessionInfo);
+	    if (crv == CKR_OK) {
+		if ((sessionInfo.flags & CKF_RW_SESSION) == 0) {
+		    /* session was readonly, so this softoken slot must be 			     * readonly */
+		    slot->readOnly = PR_TRUE;
+		}
+	    }
+	    PK11_GETTAB(slot)->C_CloseSession(session);
+	}
+    }
+	
+    return SECSuccess;
+}
+
+/*
+ * initialize a new token
+ * unlike initialize slot, this can be called multiple times in the lifetime
+ * of NSS. It reads the information associated with a card or token,
+ * that is not going to change unless the card or token changes.
+ */
+SECStatus
+PK11_TokenRefresh(PK11SlotInfo *slot)
+{
+    CK_TOKEN_INFO tokenInfo;
+    CK_RV crv;
+
+    /* set the slot flags to the current token values */
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_GetTokenInfo(slot->slotID,&tokenInfo);
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+
+    slot->flags = tokenInfo.flags;
+    slot->needLogin = ((tokenInfo.flags & CKF_LOGIN_REQUIRED) ? 
+							PR_TRUE : PR_FALSE);
+    slot->readOnly = ((tokenInfo.flags & CKF_WRITE_PROTECTED) ? 
+							PR_TRUE : PR_FALSE);
+    slot->hasRandom = ((tokenInfo.flags & CKF_RNG) ? PR_TRUE : PR_FALSE);
+    slot->protectedAuthPath =
+    		((tokenInfo.flags & CKF_PROTECTED_AUTHENTICATION_PATH) 
+	 						? PR_TRUE : PR_FALSE);
+    /* on some platforms Active Card incorrectly sets the 
+     * CKF_PROTECTED_AUTHENTICATION_PATH bit when it doesn't mean to. */
+    if (slot->isActiveCard) {
+	slot->protectedAuthPath = PR_FALSE;
+    }
+    return SECSuccess;
+}
+
+static PRBool
+pk11_isRootSlot(PK11SlotInfo *slot) 
+{
+    CK_ATTRIBUTE findTemp[1];
+    CK_ATTRIBUTE *attrs;
+    CK_OBJECT_CLASS oclass = CKO_NETSCAPE_BUILTIN_ROOT_LIST;
+    int tsize;
+    CK_OBJECT_HANDLE handle;
+
+    attrs = findTemp;
+    PK11_SETATTRS(attrs, CKA_CLASS, &oclass, sizeof(oclass)); attrs++;
+    tsize = attrs - findTemp;
+    PORT_Assert(tsize <= sizeof(findTemp)/sizeof(CK_ATTRIBUTE));
+
+    handle = pk11_FindObjectByTemplate(slot,findTemp,tsize);
+    if (handle == CK_INVALID_HANDLE) {
+	return PR_FALSE;
+    }
+    return PR_TRUE;
+}
+
+/*
+ * Initialize the slot :
+ * This initialization code is called on each slot a module supports when
+ * it is loaded. It does the bringup initialization. The difference between
+ * this and InitToken is Init slot does those one time initialization stuff,
+ * usually associated with the reader, while InitToken may get called multiple
+ * times as tokens are removed and re-inserted.
+ */
+void
+PK11_InitSlot(SECMODModule *mod, CK_SLOT_ID slotID, PK11SlotInfo *slot)
+{
+    SECStatus rv;
+    char *tmp;
+    CK_SLOT_INFO slotInfo;
+
+    slot->functionList = mod->functionList;
+    slot->isInternal = mod->internal;
+    slot->slotID = slotID;
+    slot->isThreadSafe = mod->isThreadSafe;
+    slot->hasRSAInfo = PR_FALSE;
+    
+    if (PK11_GETTAB(slot)->C_GetSlotInfo(slotID,&slotInfo) != CKR_OK) {
+	slot->disabled = PR_TRUE;
+	slot->reason = PK11_DIS_COULD_NOT_INIT_TOKEN;
+	return;
+    }
+
+    /* test to make sure claimed mechanism work */
+    slot->needTest = mod->internal ? PR_FALSE : PR_TRUE;
+    slot->module = mod; /* NOTE: we don't make a reference here because
+			 * modules have references to their slots. This
+			 * works because modules keep implicit references
+			 * from their slots, and won't unload and disappear
+			 * until all their slots have been freed */
+    tmp = PK11_MakeString(NULL,slot->slot_name,
+	 (char *)slotInfo.slotDescription, sizeof(slotInfo.slotDescription));
+    slot->isHW = (PRBool)((slotInfo.flags & CKF_HW_SLOT) == CKF_HW_SLOT);
+#define ACTIVE_CARD "ActivCard SA"
+    slot->isActiveCard = (PRBool)(PORT_Strncmp((char *)slotInfo.manufacturerID,
+				ACTIVE_CARD, sizeof(ACTIVE_CARD)-1) == 0);
+    if ((slotInfo.flags & CKF_REMOVABLE_DEVICE) == 0) {
+	slot->isPerm = PR_TRUE;
+	/* permanment slots must have the token present always */
+	if ((slotInfo.flags & CKF_TOKEN_PRESENT) == 0) {
+	    slot->disabled = PR_TRUE;
+	    slot->reason = PK11_DIS_TOKEN_NOT_PRESENT;
+	    return; /* nothing else to do */
+	}
+    }
+    /* if the token is present, initialize it */
+    if ((slotInfo.flags & CKF_TOKEN_PRESENT) != 0) {
+	rv = PK11_InitToken(slot,PR_TRUE);
+	/* the only hard failures are on permanent devices, or function
+	 * verify failures... function verify failures are already handled
+	 * by tokenInit */
+	if ((rv != SECSuccess) && (slot->isPerm) && (!slot->disabled)) {
+	    slot->disabled = PR_TRUE;
+	    slot->reason = PK11_DIS_COULD_NOT_INIT_TOKEN;
+	}
+	if (rv == SECSuccess && pk11_isRootSlot(slot)) {
+	    if (!slot->hasRootCerts) {
+		slot->module->trustOrder = 100;
+	    }
+	    slot->hasRootCerts= PR_TRUE;
+	}
+    }
+}
+
+	
+
+/*********************************************************************
+ *            Slot mapping utility functions.
+ *********************************************************************/
+
+/*
+ * determine if the token is present. If the token is present, make sure
+ * we have a valid session handle. Also set the value of needLogin 
+ * appropriately.
+ */
+static PRBool
+pk11_IsPresentCertLoad(PK11SlotInfo *slot, PRBool loadCerts)
+{
+    CK_SLOT_INFO slotInfo;
+    CK_SESSION_INFO sessionInfo;
+    CK_RV crv;
+
+    /* disabled slots are never present */
+    if (slot->disabled) {
+	return PR_FALSE;
+    }
+
+    /* permanent slots are always present */
+    if (slot->isPerm && (slot->session != CK_INVALID_SESSION)) {
+	return PR_TRUE;
+    }
+
+    if (slot->nssToken) {
+	return nssToken_IsPresent(slot->nssToken);
+    }
+
+    /* removable slots have a flag that says they are present */
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    if (PK11_GETTAB(slot)->C_GetSlotInfo(slot->slotID,&slotInfo) != CKR_OK) {
+        if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	return PR_FALSE;
+    }
+    if ((slotInfo.flags & CKF_TOKEN_PRESENT) == 0) {
+	/* if the slot is no longer present, close the session */
+	if (slot->session != CK_INVALID_SESSION) {
+	    PK11_GETTAB(slot)->C_CloseSession(slot->session);
+	    slot->session = CK_INVALID_SESSION;
+	}
+        if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	return PR_FALSE;
+    }
+
+    /* use the session Info to determine if the card has been removed and then
+     * re-inserted */
+    if (slot->session != CK_INVALID_SESSION) {
+	if (slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+	crv = PK11_GETTAB(slot)->C_GetSessionInfo(slot->session, &sessionInfo);
+	if (crv != CKR_OK) {
+	    PK11_GETTAB(slot)->C_CloseSession(slot->session);
+	    slot->session = CK_INVALID_SESSION;
+	}
+        if (slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    }
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+
+    /* card has not been removed, current token info is correct */
+    if (slot->session != CK_INVALID_SESSION) return PR_TRUE;
+
+    /* initialize the token info state */
+    if (PK11_InitToken(slot,loadCerts) != SECSuccess) {
+	return PR_FALSE;
+    }
+
+    return PR_TRUE;
+}
+
+/*
+ * old version of the routine
+ */
+PRBool
+PK11_IsPresent(PK11SlotInfo *slot) {
+   return pk11_IsPresentCertLoad(slot,PR_TRUE);
+}
+
+/* is the slot disabled? */
+PRBool
+PK11_IsDisabled(PK11SlotInfo *slot)
+{
+    return slot->disabled;
+}
+
+/* and why? */
+PK11DisableReasons
+PK11_GetDisabledReason(PK11SlotInfo *slot)
+{
+    return slot->reason;
+}
+
+/* returns PR_TRUE if successfully disable the slot */
+/* returns PR_FALSE otherwise */
+PRBool PK11_UserDisableSlot(PK11SlotInfo *slot) {
+
+    /* Prevent users from disabling the internal module. */
+    if (slot->isInternal) {
+	PORT_SetError(SEC_ERROR_INVALID_ARGS);
+	return PR_FALSE;
+    }
+
+    slot->defaultFlags |= PK11_DISABLE_FLAG;
+    slot->disabled = PR_TRUE;
+    slot->reason = PK11_DIS_USER_SELECTED;
+    
+    return PR_TRUE;
+}
+
+PRBool PK11_UserEnableSlot(PK11SlotInfo *slot) {
+
+    slot->defaultFlags &= ~PK11_DISABLE_FLAG;
+    slot->disabled = PR_FALSE;
+    slot->reason = PK11_DIS_NONE;
+    return PR_TRUE;
+}
+
+PRBool PK11_HasRootCerts(PK11SlotInfo *slot) {
+    return slot->hasRootCerts;
+}
+
+/* Get the module this slot is attached to */
+SECMODModule *
+PK11_GetModule(PK11SlotInfo *slot)
+{
+	return slot->module;
+}
+
+/* return the default flags of a slot */
+unsigned long
+PK11_GetDefaultFlags(PK11SlotInfo *slot)
+{
+	return slot->defaultFlags;
+}
+
+/*
+ * The following wrapper functions allow us to export an opaque slot
+ * function to the rest of libsec and the world... */
+PRBool
+PK11_IsReadOnly(PK11SlotInfo *slot)
+{
+    return slot->readOnly;
+}
+
+PRBool
+PK11_IsHW(PK11SlotInfo *slot)
+{
+    return slot->isHW;
+}
+
+PRBool
+PK11_IsRemovable(PK11SlotInfo *slot)
+{
+    return !slot->isPerm;
+}
+
+PRBool
+PK11_IsInternal(PK11SlotInfo *slot)
+{
+    return slot->isInternal;
+}
+
+PRBool
+PK11_IsInternalKeySlot(PK11SlotInfo *slot)
+{
+    PK11SlotInfo *int_slot;
+    PRBool result;
+
+    if (!slot->isInternal) {
+	return PR_FALSE;
+    }
+
+    int_slot = PK11_GetInternalKeySlot();
+    result = (int_slot == slot) ? PR_TRUE : PR_FALSE;
+    PK11_FreeSlot(int_slot);
+    return result;
+}
+
+PRBool
+PK11_NeedLogin(PK11SlotInfo *slot)
+{
+    return slot->needLogin;
+}
+
+PRBool
+PK11_IsFriendly(PK11SlotInfo *slot)
+{
+    /* internal slot always has public readable certs */
+    return (PRBool)(slot->isInternal || 
+		    ((slot->defaultFlags & SECMOD_FRIENDLY_FLAG) == 
+		     SECMOD_FRIENDLY_FLAG));
+}
+
+char *
+PK11_GetTokenName(PK11SlotInfo *slot)
+{
+     return slot->token_name;
+}
+
+char *
+PK11_GetSlotName(PK11SlotInfo *slot)
+{
+     return slot->slot_name;
+}
+
+int
+PK11_GetSlotSeries(PK11SlotInfo *slot)
+{
+    return slot->series;
+}
+
+int
+PK11_GetCurrentWrapIndex(PK11SlotInfo *slot)
+{
+    return slot->wrapKey;
+}
+
+CK_SLOT_ID
+PK11_GetSlotID(PK11SlotInfo *slot)
+{
+    return slot->slotID;
+}
+
+SECMODModuleID
+PK11_GetModuleID(PK11SlotInfo *slot)
+{
+    return slot->module->moduleID;
+}
+
+static void
+pk11_zeroTerminatedToBlankPadded(CK_CHAR *buffer, size_t buffer_size)
+{
+    CK_CHAR *walk = buffer;
+    CK_CHAR *end = buffer + buffer_size;
+
+    /* find the NULL */
+    while (walk < end && *walk != '\0') {
+	walk++;
+    }
+
+    /* clear out the buffer */
+    while (walk < end) {
+	*walk++ = ' ';
+    }
+}
+
+/* return the slot info structure */
+SECStatus
+PK11_GetSlotInfo(PK11SlotInfo *slot, CK_SLOT_INFO *info)
+{
+    CK_RV crv;
+
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    /*
+     * some buggy drivers do not fill the buffer completely, 
+     * erase the buffer first
+     */
+    PORT_Memset(info->slotDescription,' ',sizeof(info->slotDescription));
+    PORT_Memset(info->manufacturerID,' ',sizeof(info->manufacturerID));
+    crv = PK11_GETTAB(slot)->C_GetSlotInfo(slot->slotID,info);
+    pk11_zeroTerminatedToBlankPadded(info->slotDescription,
+					sizeof(info->slotDescription));
+    pk11_zeroTerminatedToBlankPadded(info->manufacturerID,
+					sizeof(info->manufacturerID));
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+    return SECSuccess;
+}
+
+/*  return the token info structure */
+SECStatus
+PK11_GetTokenInfo(PK11SlotInfo *slot, CK_TOKEN_INFO *info)
+{
+    CK_RV crv;
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    /*
+     * some buggy drivers do not fill the buffer completely, 
+     * erase the buffer first
+     */
+    PORT_Memset(info->label,' ',sizeof(info->label));
+    PORT_Memset(info->manufacturerID,' ',sizeof(info->manufacturerID));
+    PORT_Memset(info->model,' ',sizeof(info->model));
+    PORT_Memset(info->serialNumber,' ',sizeof(info->serialNumber));
+    crv = PK11_GETTAB(slot)->C_GetTokenInfo(slot->slotID,info);
+    pk11_zeroTerminatedToBlankPadded(info->label,sizeof(info->label));
+    pk11_zeroTerminatedToBlankPadded(info->manufacturerID,
+					sizeof(info->manufacturerID));
+    pk11_zeroTerminatedToBlankPadded(info->model,sizeof(info->model));
+    pk11_zeroTerminatedToBlankPadded(info->serialNumber,
+					sizeof(info->serialNumber));
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+    return SECSuccess;
+}
+
+/* Find out if we need to initialize the user's pin */
+PRBool
+PK11_NeedUserInit(PK11SlotInfo *slot)
+{
+    PRBool needUserInit = (PRBool) ((slot->flags & CKF_USER_PIN_INITIALIZED) 
+					== 0);
+
+    if (needUserInit) {
+	CK_TOKEN_INFO info;
+	SECStatus rv;
+
+	/* see if token has been initialized off line */
+	rv = PK11_GetTokenInfo(slot, &info);
+	if (rv == SECSuccess) {
+	    slot->flags = info.flags;
+	}
+    }
+    return (PRBool)((slot->flags & CKF_USER_PIN_INITIALIZED) == 0);
+}
+
+static PK11SlotInfo *pk11InternalKeySlot = NULL;
+
+/*
+ * Set a new default internal keyslot. If one has already been set, clear it.
+ * Passing NULL falls back to the NSS normally selected default internal key
+ * slot.
+ */
+void
+pk11_SetInternalKeySlot(PK11SlotInfo *slot)
+{
+   if (pk11InternalKeySlot) {
+	PK11_FreeSlot(pk11InternalKeySlot);
+   }
+   pk11InternalKeySlot = slot ? PK11_ReferenceSlot(slot) : NULL;
+}
+
+/*
+ * Set a new default internal keyslot if the normal key slot has not already
+ * been overridden. Subsequent calls to this function will be ignored unless
+ * pk11_SetInternalKeySlot is used to clear the current default.
+ */
+void
+pk11_SetInternalKeySlotIfFirst(PK11SlotInfo *slot)
+{
+   if (pk11InternalKeySlot) {
+	return;
+   }
+   pk11InternalKeySlot = slot ? PK11_ReferenceSlot(slot) : NULL;
+}
+
+/*
+ * Swap out a default internal keyslot.  Caller owns the Slot Reference
+ */
+PK11SlotInfo *
+pk11_SwapInternalKeySlot(PK11SlotInfo *slot)
+{
+   PK11SlotInfo *swap = pk11InternalKeySlot;
+
+   pk11InternalKeySlot = slot ? PK11_ReferenceSlot(slot) : NULL;
+   return swap;
+}
+
+
+/* get the internal key slot. FIPS has only one slot for both key slots and
+ * default slots */
+PK11SlotInfo *
+PK11_GetInternalKeySlot(void)
+{
+    SECMODModule *mod;
+
+    if (pk11InternalKeySlot) {
+	return PK11_ReferenceSlot(pk11InternalKeySlot);
+    }
+
+    mod = SECMOD_GetInternalModule();
+    PORT_Assert(mod != NULL);
+    if (!mod) {
+	PORT_SetError( SEC_ERROR_NO_MODULE );
+	return NULL;
+    }
+    return PK11_ReferenceSlot(mod->isFIPS ? mod->slots[0] : mod->slots[1]);
+}
+
+/* get the internal default slot */
+PK11SlotInfo *
+PK11_GetInternalSlot(void) 
+{
+    SECMODModule * mod = SECMOD_GetInternalModule();
+    PORT_Assert(mod != NULL);
+    if (!mod) {
+	PORT_SetError( SEC_ERROR_NO_MODULE );
+	return NULL;
+    }
+    if (mod->isFIPS) {
+	return PK11_GetInternalKeySlot();
+    }
+    return PK11_ReferenceSlot(mod->slots[0]);
+}
+
+/*
+ * check if a given slot supports the requested mechanism
+ */
+PRBool
+PK11_DoesMechanism(PK11SlotInfo *slot, CK_MECHANISM_TYPE type)
+{
+    int i;
+
+    /* CKM_FAKE_RANDOM is not a real PKCS mechanism. It's a marker to
+     * tell us we're looking form someone that has implemented get
+     * random bits */
+    if (type == CKM_FAKE_RANDOM) {
+	return slot->hasRandom;
+    }
+
+    /* for most mechanism, bypass the linear lookup */
+    if (type < 0x7ff) {
+	return (slot->mechanismBits[type & 0xff] & (1 << (type >> 8)))  ?
+		PR_TRUE : PR_FALSE;
+    }
+	   
+    for (i=0; i < (int) slot->mechanismCount; i++) {
+	if (slot->mechanismList[i] == type) return PR_TRUE;
+    }
+    return PR_FALSE;
+}
+
+/*
+ * Return true if a token that can do the desired mechanism exists.
+ * This allows us to have hardware tokens that can do function XYZ magically
+ * allow SSL Ciphers to appear if they are plugged in.
+ */
+PRBool
+PK11_TokenExists(CK_MECHANISM_TYPE type)
+{
+    SECMODModuleList *mlp;
+    SECMODModuleList *modules;
+    SECMODListLock *moduleLock = SECMOD_GetDefaultModuleListLock();
+    PK11SlotInfo *slot;
+    PRBool found = PR_FALSE;
+    int i;
+
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return found;
+    }
+    /* we only need to know if there is a token that does this mechanism.
+     * check the internal module first because it's fast, and supports 
+     * almost everything. */
+    slot = PK11_GetInternalSlot();
+    if (slot) {
+    	found = PK11_DoesMechanism(slot,type);
+	PK11_FreeSlot(slot);
+    }
+    if (found) return PR_TRUE; /* bypass getting module locks */
+
+    SECMOD_GetReadLock(moduleLock);
+    modules = SECMOD_GetDefaultModuleList();
+    for(mlp = modules; mlp != NULL && (!found); mlp = mlp->next) {
+	for (i=0; i < mlp->module->slotCount; i++) {
+	    slot = mlp->module->slots[i];
+	    if (PK11_IsPresent(slot)) {
+		if (PK11_DoesMechanism(slot,type)) {
+		    found = PR_TRUE;
+		    break;
+		}
+	    }
+	}
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+    return found;
+}
+
+/*
+ * get all the currently available tokens in a list.
+ * that can perform the given mechanism. If mechanism is CKM_INVALID_MECHANISM,
+ * get all the tokens. Make sure tokens that need authentication are put at
+ * the end of this list.
+ */
+PK11SlotList *
+PK11_GetAllTokens(CK_MECHANISM_TYPE type, PRBool needRW, PRBool loadCerts, 
+                  void *wincx)
+{
+    PK11SlotList *     list;
+    PK11SlotList *     loginList;
+    PK11SlotList *     friendlyList;
+    SECMODModuleList * mlp;
+    SECMODModuleList * modules;
+    SECMODListLock *   moduleLock;
+    int                i;
+#if defined( XP_WIN32 ) 
+    int                j            = 0;
+    PRInt32            waste[16];
+#endif
+
+    moduleLock   = SECMOD_GetDefaultModuleListLock();
+    if (!moduleLock) {
+    	PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
+	return NULL;
+    }
+
+    list         = PK11_NewSlotList();
+    loginList    = PK11_NewSlotList();
+    friendlyList = PK11_NewSlotList();
+    if ((list == NULL)  || (loginList == NULL) || (friendlyList == NULL)) {
+	if (list) PK11_FreeSlotList(list);
+	if (loginList) PK11_FreeSlotList(loginList);
+	if (friendlyList) PK11_FreeSlotList(friendlyList);
+	return NULL;
+    }
+
+    SECMOD_GetReadLock(moduleLock);
+
+    modules      = SECMOD_GetDefaultModuleList();
+    for(mlp = modules; mlp != NULL; mlp = mlp->next) {
+
+#if defined( XP_WIN32 ) 
+	/* This is works around some horrible cache/page thrashing problems 
+	** on Win32.  Without this, this loop can take up to 6 seconds at 
+	** 100% CPU on a Pentium-Pro 200.  The thing this changes is to 
+	** increase the size of the stack frame and modify it.  
+	** Moving the loop code itself seems to have no effect.
+	** Dunno why this combination makes a difference, but it does.
+	*/
+	waste[ j & 0xf] = j++; 
+#endif
+
+	for (i = 0; i < mlp->module->slotCount; i++) {
+	    PK11SlotInfo *slot = mlp->module->slots[i];
+
+	    if (pk11_IsPresentCertLoad(slot, loadCerts)) {
+		if (needRW &&  slot->readOnly) continue;
+		if ((type == CKM_INVALID_MECHANISM) 
+					|| PK11_DoesMechanism(slot, type)) {
+		    if (pk11_LoginStillRequired(slot,wincx)) {
+			if (PK11_IsFriendly(slot)) {
+			    PK11_AddSlotToList(friendlyList, slot, PR_TRUE);
+			} else {
+			    PK11_AddSlotToList(loginList, slot, PR_TRUE);
+			}
+		    } else {
+			PK11_AddSlotToList(list, slot, PR_TRUE);
+		    }
+		}
+	    }
+	}
+    }
+    SECMOD_ReleaseReadLock(moduleLock);
+
+    pk11_MoveListToList(list,friendlyList);
+    PK11_FreeSlotList(friendlyList);
+    pk11_MoveListToList(list,loginList);
+    PK11_FreeSlotList(loginList);
+
+    return list;
+}
+
+/*
+ * NOTE: This routine is working from a private List generated by 
+ * PK11_GetAllTokens. That is why it does not need to lock.
+ */
+PK11SlotList *
+PK11_GetPrivateKeyTokens(CK_MECHANISM_TYPE type,PRBool needRW,void *wincx)
+{
+    PK11SlotList *list = PK11_GetAllTokens(type,needRW,PR_TRUE,wincx);
+    PK11SlotListElement *le, *next ;
+    SECStatus rv;
+
+    if (list == NULL) return list;
+
+    for (le = list->head ; le; le = next) {
+	next = le->next; /* save the pointer here in case we have to 
+			  * free the element later */
+        rv = PK11_Authenticate(le->slot,PR_TRUE,wincx);
+	if (rv != SECSuccess) {
+	    PK11_DeleteSlotFromList(list,le);
+	    continue;
+	}
+    }
+    return list;
+}
+
+/*
+ * returns true if the slot doesn't conform to the requested attributes
+ */
+PRBool
+pk11_filterSlot(PK11SlotInfo *slot, CK_MECHANISM_TYPE mechanism, 
+	CK_FLAGS mechanismInfoFlags, unsigned int keySize) 
+{
+    CK_MECHANISM_INFO mechanism_info;
+    CK_RV crv = CKR_OK;
+
+    /* handle the only case where we don't actually fetch the mechanisms
+     * on the fly */
+    if ((keySize == 0) && (mechanism == CKM_RSA_PKCS) && (slot->hasRSAInfo)) {
+	mechanism_info.flags = slot->RSAInfoFlags;
+    } else {
+	if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    	crv = PK11_GETTAB(slot)->C_GetMechanismInfo(slot->slotID, mechanism, 
+							&mechanism_info);
+	if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	/* if we were getting the RSA flags, save them */
+	if ((crv == CKR_OK) && (mechanism == CKM_RSA_PKCS) 
+						&& (!slot->hasRSAInfo)) {
+	    slot->RSAInfoFlags = mechanism_info.flags;
+	    slot->hasRSAInfo = PR_TRUE;
+	}
+    }
+    /* couldn't get the mechanism info */
+    if (crv != CKR_OK ) {
+	return PR_TRUE;
+    }
+    if (keySize && ((mechanism_info.ulMinKeySize > keySize)
+			|| (mechanism_info.ulMaxKeySize < keySize)) ) {
+	/* Token can do mechanism, but not at the key size we
+	 * want */
+	return PR_TRUE;
+    }
+    if (mechanismInfoFlags && ((mechanism_info.flags & mechanismInfoFlags) !=
+				mechanismInfoFlags) ) {
+	return PR_TRUE;
+    }
+    return PR_FALSE;
+}
+
+
+/*
+ * Find the best slot which supports the given set of mechanisms and key sizes.
+ * In normal cases this should grab the first slot on the list with no fuss.
+ * The size array is presumed to match one for one with the mechanism type 
+ * array, which allows you to specify the required key size for each
+ * mechanism in the list. Whether key size is in bits or bytes is mechanism
+ * dependent. Typically asymetric keys are in bits and symetric keys are in 
+ * bytes.
+ */
+PK11SlotInfo *
+PK11_GetBestSlotMultipleWithAttributes(CK_MECHANISM_TYPE *type, 
+		CK_FLAGS *mechanismInfoFlags, unsigned int *keySize, 
+		unsigned int mech_count, void *wincx)
+{
+    PK11SlotList *list = NULL;
+    PK11SlotListElement *le ;
+    PK11SlotInfo *slot = NULL;
+    PRBool freeit = PR_FALSE;
+    PRBool listNeedLogin = PR_FALSE;
+    int i;
+    SECStatus rv;
+
+    list = PK11_GetSlotList(type[0]);
+
+    if ((list == NULL) || (list->head == NULL)) {
+	/* We need to look up all the tokens for the mechanism */
+	list = PK11_GetAllTokens(type[0],PR_FALSE,PR_TRUE,wincx);
+	freeit = PR_TRUE;
+    }
+
+    /* no one can do it! */
+    if (list == NULL) {
+	PORT_SetError(SEC_ERROR_NO_TOKEN);
+	return NULL;
+    }
+
+    PORT_SetError(0);
+
+
+    listNeedLogin = PR_FALSE;
+    for (i=0; i < mech_count; i++) {
+	if ((type[i] != CKM_FAKE_RANDOM) && 
+	    (type[i] != CKM_SHA_1) &&
+	    (type[i] != CKM_SHA224) &&
+	    (type[i] != CKM_SHA256) &&
+	    (type[i] != CKM_SHA384) &&
+	    (type[i] != CKM_SHA512) &&
+	    (type[i] != CKM_MD5) && 
+	    (type[i] != CKM_MD2)) {
+	    listNeedLogin = PR_TRUE;
+	    break;
+	}
+    }
+
+    for (le = PK11_GetFirstSafe(list); le;
+			 	le = PK11_GetNextSafe(list,le,PR_TRUE)) {
+	if (PK11_IsPresent(le->slot)) {
+	    PRBool doExit = PR_FALSE;
+	    for (i=0; i < mech_count; i++) {
+	    	if (!PK11_DoesMechanism(le->slot,type[i])) {
+		    doExit = PR_TRUE;
+		    break;
+		}
+		if ((mechanismInfoFlags && mechanismInfoFlags[i]) ||
+			(keySize && keySize[i])) {
+		    if (pk11_filterSlot(le->slot, type[i], 
+			    mechanismInfoFlags ?  mechanismInfoFlags[i] : 0,
+			    keySize ? keySize[i] : 0)) {
+			doExit = PR_TRUE;
+			break;
+		    }
+		}
+	    }
+    
+	    if (doExit) continue;
+	      
+	    if (listNeedLogin && le->slot->needLogin) {
+		rv = PK11_Authenticate(le->slot,PR_TRUE,wincx);
+		if (rv != SECSuccess) continue;
+	    }
+	    slot = le->slot;
+	    PK11_ReferenceSlot(slot);
+	    PK11_FreeSlotListElement(list,le);
+	    if (freeit) { PK11_FreeSlotList(list); }
+	    return slot;
+	}
+    }
+    if (freeit) { PK11_FreeSlotList(list); }
+    if (PORT_GetError() == 0) {
+	PORT_SetError(SEC_ERROR_NO_TOKEN);
+    }
+    return NULL;
+}
+
+PK11SlotInfo *
+PK11_GetBestSlotMultiple(CK_MECHANISM_TYPE *type, 
+			 unsigned int mech_count, void *wincx)
+{
+    return PK11_GetBestSlotMultipleWithAttributes(type, NULL, NULL, 
+						mech_count, wincx);
+}
+
+/* original get best slot now calls the multiple version with only one type */
+PK11SlotInfo *
+PK11_GetBestSlot(CK_MECHANISM_TYPE type, void *wincx)
+{
+    return PK11_GetBestSlotMultipleWithAttributes(&type, NULL, NULL, 1, wincx);
+}
+
+PK11SlotInfo *
+PK11_GetBestSlotWithAttributes(CK_MECHANISM_TYPE type, CK_FLAGS mechanismFlags,
+		unsigned int keySize, void *wincx)
+{
+    return PK11_GetBestSlotMultipleWithAttributes(&type, &mechanismFlags,
+						 &keySize, 1, wincx);
+}
+
+int
+PK11_GetBestKeyLength(PK11SlotInfo *slot,CK_MECHANISM_TYPE mechanism)
+{
+    CK_MECHANISM_INFO mechanism_info;
+    CK_RV crv;
+
+    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_GetMechanismInfo(slot->slotID,
+                               mechanism,&mechanism_info);
+    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) return 0;
+
+    if (mechanism_info.ulMinKeySize == mechanism_info.ulMaxKeySize) 
+		return 0;
+    return mechanism_info.ulMaxKeySize;
+}
+
+
+/*
+ * This function uses the existing PKCS #11 module to find the
+ * longest supported key length in the preferred token for a mechanism.
+ * This varies from the above function in that 1) it returns the key length
+ * even for fixed key algorithms, and 2) it looks through the tokens
+ * generally rather than for a specific token. This is used in liu of
+ * a PK11_GetKeyLength function in pk11mech.c since we can actually read
+ * supported key lengths from PKCS #11.
+ *
+ * For symmetric key operations the length is returned in bytes.
+ */
+int
+PK11_GetMaxKeyLength(CK_MECHANISM_TYPE mechanism)
+{
+    CK_MECHANISM_INFO mechanism_info;
+    PK11SlotList *list = NULL;
+    PK11SlotListElement *le ;
+    PRBool freeit = PR_FALSE;
+    int keyLength = 0;
+
+    list = PK11_GetSlotList(mechanism);
+
+    if ((list == NULL) || (list->head == NULL)) {
+	/* We need to look up all the tokens for the mechanism */
+	list = PK11_GetAllTokens(mechanism,PR_FALSE,PR_FALSE,NULL);
+	freeit = PR_TRUE;
+    }
+
+    /* no tokens recognize this mechanism */
+    if (list == NULL) {
+	PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
+	return 0;
+    }
+
+    for (le = PK11_GetFirstSafe(list); le;
+			 	le = PK11_GetNextSafe(list,le,PR_TRUE)) {
+	PK11SlotInfo *slot = le->slot;
+	CK_RV crv;
+	if (PK11_IsPresent(slot)) {
+	    if (!slot->isThreadSafe) PK11_EnterSlotMonitor(slot);
+	    crv = PK11_GETTAB(slot)->C_GetMechanismInfo(slot->slotID,
+                               mechanism,&mechanism_info);
+ 	    if (!slot->isThreadSafe) PK11_ExitSlotMonitor(slot);
+	    if ((crv == CKR_OK)  && (mechanism_info.ulMaxKeySize != 0)
+		&& (mechanism_info.ulMaxKeySize != 0xffffffff)) {
+		keyLength = mechanism_info.ulMaxKeySize;
+		break;
+	    }
+	}
+    }
+    if (le) 
+	PK11_FreeSlotListElement(list, le);
+    if (freeit) 
+	PK11_FreeSlotList(list);
+    return keyLength;
+}
+
+SECStatus
+PK11_SeedRandom(PK11SlotInfo *slot, unsigned char *data, int len) {
+    CK_RV crv;
+
+    PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_SeedRandom(slot->session, data, (CK_ULONG)len);
+    PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+    return SECSuccess;
+}
+
+
+SECStatus
+PK11_GenerateRandomOnSlot(PK11SlotInfo *slot, unsigned char *data, int len) {
+    CK_RV crv;
+
+    if (!slot->isInternal) PK11_EnterSlotMonitor(slot);
+    crv = PK11_GETTAB(slot)->C_GenerateRandom(slot->session,data, 
+							(CK_ULONG)len);
+    if (!slot->isInternal) PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return  SECFailure;
+    }
+    return SECSuccess;
+}
+
+/* Attempts to update the Best Slot for "FAKE RANDOM" generation.
+** If that's not the internal slot, then it also attempts to update the
+** internal slot.
+** The return value indicates if the INTERNAL slot was updated OK.
+*/
+SECStatus
+PK11_RandomUpdate(void *data, size_t bytes)
+{
+    PK11SlotInfo *slot;
+    PRBool        bestIsInternal;
+    SECStatus     status;
+
+    slot = PK11_GetBestSlot(CKM_FAKE_RANDOM, NULL);
+    if (slot == NULL) {
+	slot = PK11_GetInternalSlot();
+	if (!slot)
+	    return SECFailure;
+    }
+
+    bestIsInternal = PK11_IsInternal(slot);
+    status = PK11_SeedRandom(slot, data, bytes);
+    PK11_FreeSlot(slot);
+
+    if (!bestIsInternal) {
+    	/* do internal slot, too. */
+    	slot = PK11_GetInternalSlot();	/* can't fail */
+	status = PK11_SeedRandom(slot, data, bytes);
+	PK11_FreeSlot(slot);
+    }
+    return status;
+}
+
+
+SECStatus
+PK11_GenerateRandom(unsigned char *data,int len) {
+    PK11SlotInfo *slot;
+    SECStatus rv;
+
+    slot = PK11_GetBestSlot(CKM_FAKE_RANDOM,NULL);
+    if (slot == NULL) return SECFailure;
+
+    rv = PK11_GenerateRandomOnSlot(slot, data, len);
+    PK11_FreeSlot(slot);
+    return rv;
+}
+
+/*
+ * Reset the token to it's initial state. For the internal module, this will
+ * Purge your keydb, and reset your cert db certs to USER_INIT.
+ */
+SECStatus 
+PK11_ResetToken(PK11SlotInfo *slot, char *sso_pwd)
+{
+    unsigned char tokenName[32];
+    int tokenNameLen;
+    CK_RV crv;
+
+    /* reconstruct the token name */
+    tokenNameLen = PORT_Strlen(slot->token_name);
+    if (tokenNameLen > sizeof(tokenName)) {
+	tokenNameLen = sizeof(tokenName);
+    }
+
+    PORT_Memcpy(tokenName,slot->token_name,tokenNameLen);
+    if (tokenNameLen < sizeof(tokenName)) {
+	PORT_Memset(&tokenName[tokenNameLen],' ',
+					 sizeof(tokenName)-tokenNameLen);
+    }
+
+    /* initialize the token */    
+    PK11_EnterSlotMonitor(slot);
+
+    /* first shutdown the token. Existing sessions will get closed here */
+    PK11_GETTAB(slot)->C_CloseAllSessions(slot->slotID);
+    slot->session = CK_INVALID_SESSION;
+
+    /* now re-init the token */ 
+    crv = PK11_GETTAB(slot)->C_InitToken(slot->slotID,
+	(unsigned char *)sso_pwd, sso_pwd ? PORT_Strlen(sso_pwd): 0, tokenName);
+
+    /* finally bring the token back up */
+    PK11_InitToken(slot,PR_TRUE);
+    PK11_ExitSlotMonitor(slot);
+    if (crv != CKR_OK) {
+	PORT_SetError(PK11_MapError(crv));
+	return SECFailure;
+    }
+    nssTrustDomain_UpdateCachedTokenCerts(slot->nssToken->trustDomain,
+	                                      slot->nssToken);
+    return SECSuccess;
+}
+void
+PK11Slot_SetNSSToken(PK11SlotInfo *sl, NSSToken *nsst) 
+{
+    sl->nssToken = nsst;
+}
+
+NSSToken *
+PK11Slot_GetNSSToken(PK11SlotInfo *sl) 
+{
+    return sl->nssToken;
+}
+
+/*
+ * wait for a token to change it's state. The application passes in the expected
+ * new state in event. 
+ */
+PK11TokenStatus
+PK11_WaitForTokenEvent(PK11SlotInfo *slot, PK11TokenEvent event, 
+	PRIntervalTime timeout, PRIntervalTime latency, int series)
+{
+   PRIntervalTime first_time = 0;
+   PRBool first_time_set = PR_FALSE;
+   PRBool waitForRemoval;
+
+   if (slot->isPerm) {
+	return PK11TokenNotRemovable;
+   }
+   if (latency == 0) {
+	latency = PR_SecondsToInterval(5);
+   }
+   waitForRemoval = (PRBool) (event == PK11TokenRemovedOrChangedEvent);
+
+   if (series == 0) {
+	series = PK11_GetSlotSeries(slot);
+   }
+   while (PK11_IsPresent(slot) == waitForRemoval ) {
+	PRIntervalTime interval;
+
+	if (waitForRemoval && series != PK11_GetSlotSeries(slot)) {
+	    return PK11TokenChanged;
+	}
+	if (timeout == PR_INTERVAL_NO_WAIT) {
+	    return waitForRemoval ? PK11TokenPresent : PK11TokenRemoved;
+	}
+	if (timeout != PR_INTERVAL_NO_TIMEOUT ) {
+	    interval = PR_IntervalNow();
+	    if (!first_time_set) {
+		first_time = interval;
+		first_time_set = PR_TRUE;
+	    }
+	    if ((interval-first_time) > timeout) {
+		return waitForRemoval ? PK11TokenPresent : PK11TokenRemoved;
+	    }
+	}
+	PR_Sleep(latency);
+   }
+   return waitForRemoval ? PK11TokenRemoved : PK11TokenPresent;
+}