/*
 * Copyright (C) 2012 Red Hat Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above
 *       copyright notice, this list of conditions and the
 *       following disclaimer.
 *     * Redistributions in binary form must reproduce the
 *       above copyright notice, this list of conditions and
 *       the following disclaimer in the documentation and/or
 *       other materials provided with the distribution.
 *     * The names of contributors to this software may not be
 *       used to endorse or promote products derived from this
 *       software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * Author: Stef Walter <stefw@redhat.com>
 */

#include "config.h"

#define CRYPTOKI_EXPORTS

#include "argv.h"
#include "array.h"
#include "attrs.h"
#define P11_DEBUG_FLAG P11_DEBUG_TRUST
#include "debug.h"
#include "dict.h"
#include "library.h"
#include "message.h"
#include "module.h"
#include "oid.h"
#include "parser.h"
#include "path.h"
#include "pkcs11.h"
#include "pkcs11x.h"
#include "session.h"
#include "token.h"

#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#define MANUFACTURER_ID         "PKCS#11 Kit                     "
#define LIBRARY_DESCRIPTION     "PKCS#11 Kit Trust Module        "
#define TOKEN_MODEL             "p11-kit-trust    "
#define TOKEN_SERIAL_NUMBER     "1                "

/* Initial slot id: non-zero and non-one */
#define BASE_SLOT_ID   18UL

static struct _Shared {
	int initialized;
	p11_dict *sessions;
	p11_array *tokens;
	char *paths;
} gl = { 0, NULL, NULL, NULL };

/* Used during FindObjects */
typedef struct _FindObjects {
	CK_ATTRIBUTE *match;
	CK_OBJECT_HANDLE *snapshot;
	CK_ULONG iterator;
	CK_ATTRIBUTE *public_key;
	p11_dict *extensions;
} FindObjects;

static CK_FUNCTION_LIST sys_function_list;

static void
find_objects_free (void *data)
{
	FindObjects *find = data;
	p11_attrs_free (find->match);
	free (find->snapshot);
	p11_dict_free (find->extensions);
	free (find);
}

static CK_RV
lookup_session (CK_SESSION_HANDLE handle,
                p11_session **session)
{
	p11_session *sess;

	if (!gl.sessions)
		return CKR_CRYPTOKI_NOT_INITIALIZED;

	sess = p11_dict_get (gl.sessions, &handle);
	if (!sess)
		return CKR_SESSION_HANDLE_INVALID;

	if (sess && session)
		*session = sess;
	return CKR_OK;
}

static CK_ATTRIBUTE *
lookup_object_inlock (p11_session *session,
                      CK_OBJECT_HANDLE handle,
                      p11_index **index)
{
	CK_ATTRIBUTE *attrs;

	assert (session != NULL);

	attrs = p11_index_lookup (session->index, handle);
	if (attrs) {
		if (index)
			*index = session->index;
		return attrs;
	}

	attrs = p11_index_lookup (p11_token_index (session->token), handle);
	if (attrs) {
		if (index)
			*index = p11_token_index (session->token);
		return attrs;
	}

	return NULL;
}

static CK_RV
check_index_writable (p11_session *session,
                      p11_index *index)
{
	if (index == p11_token_index (session->token)) {
		if (!p11_token_is_writable (session->token))
			return CKR_TOKEN_WRITE_PROTECTED;
		else if (!session->read_write)
			return CKR_SESSION_READ_ONLY;
	}

	return CKR_OK;
}

static CK_RV
lookup_slot_inlock (CK_SLOT_ID id,
                    p11_token **token)
{
	/*
	 * These are invalid inputs, that well behaved callers should
	 * not produce, so have them fail precondations
	 */

	return_val_if_fail (gl.tokens != NULL,
	                    CKR_CRYPTOKI_NOT_INITIALIZED);

	return_val_if_fail (id >= BASE_SLOT_ID && id - BASE_SLOT_ID < gl.tokens->num,
	                    CKR_SLOT_ID_INVALID);

	if (token)
		*token = gl.tokens->elem[id - BASE_SLOT_ID];
	return CKR_OK;
}

static bool
check_slot (CK_SLOT_ID id)
{
	bool ret;

	p11_lock ();
	ret = lookup_slot_inlock (id, NULL) == CKR_OK;
	p11_unlock ();

	return ret;
}

static bool
create_tokens_inlock (p11_array *tokens,
                      const char *paths)
{
	/*
	 * TRANSLATORS: These label strings are used in PKCS#11 URIs and
	 * unfortunately cannot be marked translatable. If localization is
	 * desired they should be translated in GUI applications. These
	 * strings will not change arbitrarily.
	 */

	struct {
		const char *prefix;
		const char *label;
		int flags;
	} labels[] = {
		{ "~/", "User Trust", P11_TOKEN_FLAG_NONE },
		{ P11_DEFAULT_TRUST_PREFIX, "Default Trust", P11_TOKEN_FLAG_WRITE_PROTECTED },
		{ P11_SYSTEM_TRUST_PREFIX, "System Trust", P11_TOKEN_FLAG_NONE },
		{ NULL },
	};

	p11_token *token;
	p11_token *check;
	CK_SLOT_ID slot;
	const char *path;
	const char *label;
	int flags;
	char *alloc;
	char *remaining;
	char *base;
	char *pos;
	int i;

	p11_debug ("using paths: %s", paths);

	alloc = remaining = strdup (paths);
	return_val_if_fail (remaining != NULL, false);

	while (remaining) {
		path = remaining;
		pos = strchr (remaining, P11_PATH_SEP_C);
		if (pos == NULL) {
			remaining = NULL;
		} else {
			pos[0] = '\0';
			remaining = pos + 1;
		}

		if (path[0] != '\0') {
			/* The slot for the new token */
			slot = BASE_SLOT_ID + tokens->num;

			label = NULL;
			flags = P11_TOKEN_FLAG_NONE;
			base = NULL;

			/* Claim the various labels based on prefix */
			for (i = 0; label == NULL && labels[i].prefix != NULL; i++) {
				if (strncmp (path, labels[i].prefix, strlen (labels[i].prefix)) == 0) {
					label = labels[i].label;
					flags = labels[i].flags;
					labels[i].label = NULL;
				}
			}

			/* Didn't find a label above, then make one based on the path */
			if (!label) {
				label = base = p11_path_base (path);
				return_val_if_fail (base != NULL, false);
			}

			token = p11_token_new (slot, path, label, flags);
			return_val_if_fail (token != NULL, false);

			if (!p11_array_push (tokens, token))
				return_val_if_reached (false);

			free (base);
			assert (lookup_slot_inlock (slot, &check) == CKR_OK && check == token);
		}
	}

	free (alloc);
	return true;
}

static void
parse_argument (char *arg,
                void *unused)
{
	char *value;

	value = arg + strcspn (arg, ":=");
	if (!*value)
		value = NULL;
	else
		*(value++) = 0;

	if (strcmp (arg, "paths") == 0) {
		free (gl.paths);
		gl.paths = value ? strdup (value) : NULL;

	} else if (strcmp (arg, "verbose") == 0) {
		if (strcmp (value, "yes") == 0)
			p11_message_loud ();
		else if (strcmp (value, "no") == 0)
			p11_message_quiet ();
	} else {
		p11_message ("unrecognized module argument: %s", arg);
	}
}

static CK_RV
sys_C_Finalize (CK_VOID_PTR reserved)
{
	CK_RV rv = CKR_OK;

	p11_debug ("in");

	/* WARNING: This function must be reentrant */

	if (reserved) {
		rv = CKR_ARGUMENTS_BAD;

	} else {
		p11_lock ();

			if (gl.initialized == 0) {
				p11_debug ("trust module is not initialized");
				rv = CKR_CRYPTOKI_NOT_INITIALIZED;

			} else if (gl.initialized == 1) {
				p11_debug ("doing finalization");

				free (gl.paths);
				gl.paths = NULL;

				p11_dict_free (gl.sessions);
				gl.sessions = NULL;

				p11_array_free (gl.tokens);
				gl.tokens = NULL;

				rv = CKR_OK;
				gl.initialized = 0;

			} else {
				gl.initialized--;
				p11_debug ("trust module still initialized %d times", gl.initialized);
			}

		p11_unlock ();
	}

	p11_debug ("out: 0x%lx", rv);
	return rv;
}

static CK_RV
sys_C_Initialize (CK_VOID_PTR init_args)
{
	static const CK_C_INITIALIZE_ARGS def_args =
		{ NULL, NULL, NULL, NULL, CKF_OS_LOCKING_OK, NULL, };
	const CK_C_INITIALIZE_ARGS *args = NULL;
	int supplied_ok;
	CK_RV rv;

	p11_library_init_once ();

	/* WARNING: This function must be reentrant */

	p11_debug ("in");

	p11_lock ();

		rv = CKR_OK;

		args = init_args;
		if (args == NULL)
			args = &def_args;

		/* ALL supplied function pointers need to have the value either NULL or non-NULL. */
		supplied_ok = (args->CreateMutex == NULL && args->DestroyMutex == NULL &&
		               args->LockMutex == NULL && args->UnlockMutex == NULL) ||
		              (args->CreateMutex != NULL && args->DestroyMutex != NULL &&
		               args->LockMutex != NULL && args->UnlockMutex != NULL);
		if (!supplied_ok) {
			p11_message ("invalid set of mutex calls supplied");
			rv = CKR_ARGUMENTS_BAD;
		}

		/*
		 * When the CKF_OS_LOCKING_OK flag isn't set return an error.
		 * We must be able to use our pthread functionality.
		 */
		if (!(args->flags & CKF_OS_LOCKING_OK)) {
			p11_message ("can't do without os locking");
			rv = CKR_CANT_LOCK;
		}

		if (rv == CKR_OK && gl.initialized != 0) {
			p11_debug ("trust module already initialized %d times",
			           gl.initialized);

		/*
		 * We support setting the socket path and other arguments from from the
		 * pReserved pointer, similar to how NSS PKCS#11 components are initialized.
		 */
		} else if (rv == CKR_OK) {
			p11_debug ("doing initialization");

			if (args->pReserved)
				p11_argv_parse ((const char*)args->pReserved, parse_argument, NULL);

			gl.sessions = p11_dict_new (p11_dict_ulongptr_hash,
			                            p11_dict_ulongptr_equal,
			                            NULL, p11_session_free);

			gl.tokens = p11_array_new ((p11_destroyer)p11_token_free);
			if (gl.tokens && !create_tokens_inlock (gl.tokens, gl.paths ? gl.paths : TRUST_PATHS))
				gl.tokens = NULL;

			if (gl.sessions == NULL || gl.tokens == NULL) {
				warn_if_reached ();
				rv = CKR_GENERAL_ERROR;
			}
		}

		gl.initialized++;

	p11_unlock ();

	if (rv != CKR_OK)
		sys_C_Finalize (NULL);

	p11_debug ("out: 0x%lx", rv);
	return rv;
}

static CK_RV
sys_C_GetInfo (CK_INFO_PTR info)
{
	CK_RV rv = CKR_OK;

	p11_library_init_once ();

	p11_debug ("in");

	return_val_if_fail (info != NULL, CKR_ARGUMENTS_BAD);

	p11_lock ();

		if (!gl.sessions)
			rv = CKR_CRYPTOKI_NOT_INITIALIZED;

	p11_unlock ();

	if (rv == CKR_OK) {
		memset (info, 0, sizeof (*info));
		info->cryptokiVersion.major = CRYPTOKI_VERSION_MAJOR;
		info->cryptokiVersion.minor = CRYPTOKI_VERSION_MINOR;
		info->libraryVersion.major = PACKAGE_MAJOR;
		info->libraryVersion.minor = PACKAGE_MINOR;
		info->flags = 0;
		memcpy ((char*)info->manufacturerID, MANUFACTURER_ID, 32);
		memcpy ((char*)info->libraryDescription, LIBRARY_DESCRIPTION, 32);
	}

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetFunctionList (CK_FUNCTION_LIST_PTR_PTR list)
{
	/* Can be called before C_Initialize */
	return_val_if_fail (list != NULL, CKR_ARGUMENTS_BAD);

	*list = &sys_function_list;
	return CKR_OK;
}

static CK_RV
sys_C_GetSlotList (CK_BBOOL token_present,
                   CK_SLOT_ID_PTR slot_list,
                   CK_ULONG_PTR count)
{
	CK_RV rv = CKR_OK;
	int i;

	return_val_if_fail (count != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		if (!gl.sessions)
			rv = CKR_CRYPTOKI_NOT_INITIALIZED;

	p11_unlock ();

	if (rv != CKR_OK) {
		/* already failed */

	} else if (!slot_list) {
		*count = gl.tokens->num;
		rv = CKR_OK;

	} else if (*count < gl.tokens->num) {
		*count = gl.tokens->num;
		rv = CKR_BUFFER_TOO_SMALL;

	} else {
		for (i = 0; i < gl.tokens->num; i++)
			slot_list[i] = BASE_SLOT_ID + i;
		*count = gl.tokens->num;
		rv = CKR_OK;
	}

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetSlotInfo (CK_SLOT_ID id,
                   CK_SLOT_INFO_PTR info)
{
	CK_RV rv = CKR_OK;
	p11_token *token;
	const char *path;
	size_t length;

	return_val_if_fail (info != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");
	p11_lock ();

	rv = lookup_slot_inlock (id, &token);
	if (rv == CKR_OK) {
		memset (info, 0, sizeof (*info));
		info->firmwareVersion.major = 0;
		info->firmwareVersion.minor = 0;
		info->hardwareVersion.major = PACKAGE_MAJOR;
		info->hardwareVersion.minor = PACKAGE_MINOR;
		info->flags = CKF_TOKEN_PRESENT;
		memcpy ((char*)info->manufacturerID, MANUFACTURER_ID, 32);

		/* If too long, copy the first 64 characters into buffer */
		path = p11_token_get_path (token);
		length = strlen (path);
		if (length > sizeof (info->slotDescription))
			length = sizeof (info->slotDescription);
		memset (info->slotDescription, ' ', sizeof (info->slotDescription));
		memcpy (info->slotDescription, path, length);
	}

	p11_unlock ();
	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetTokenInfo (CK_SLOT_ID id,
                    CK_TOKEN_INFO_PTR info)
{
	CK_RV rv = CKR_OK;
	p11_token *token;
	const char *label;
	size_t length;

	return_val_if_fail (info != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

	rv = lookup_slot_inlock (id, &token);
	if (rv == CKR_OK) {
		memset (info, 0, sizeof (*info));
		info->firmwareVersion.major = 0;
		info->firmwareVersion.minor = 0;
		info->hardwareVersion.major = PACKAGE_MAJOR;
		info->hardwareVersion.minor = PACKAGE_MINOR;
		info->flags = CKF_TOKEN_INITIALIZED;
		memcpy ((char*)info->manufacturerID, MANUFACTURER_ID, 32);
		memcpy ((char*)info->model, TOKEN_MODEL, 16);
		memcpy ((char*)info->serialNumber, TOKEN_SERIAL_NUMBER, 16);
		info->ulMaxSessionCount = CK_EFFECTIVELY_INFINITE;
		info->ulSessionCount = CK_UNAVAILABLE_INFORMATION;
		info->ulMaxRwSessionCount = 0;
		info->ulRwSessionCount = CK_UNAVAILABLE_INFORMATION;
		info->ulMaxPinLen = 0;
		info->ulMinPinLen = 0;
		info->ulTotalPublicMemory = CK_UNAVAILABLE_INFORMATION;
		info->ulFreePublicMemory = CK_UNAVAILABLE_INFORMATION;
		info->ulTotalPrivateMemory = CK_UNAVAILABLE_INFORMATION;
		info->ulFreePrivateMemory = CK_UNAVAILABLE_INFORMATION;

		/* If too long, copy the first 32 characters into buffer */
		label = p11_token_get_label (token);
		length = strlen (label);
		if (length > sizeof (info->label))
			length = sizeof (info->label);
		memset (info->label, ' ', sizeof (info->label));
		memcpy (info->label, label, length);

		if (!p11_token_is_writable (token))
			info->flags |= CKF_WRITE_PROTECTED;
	}

	p11_unlock ();
	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetMechanismList (CK_SLOT_ID id,
                        CK_MECHANISM_TYPE_PTR mechanism_list,
                        CK_ULONG_PTR count)
{
	CK_RV rv = CKR_OK;

	return_val_if_fail (count != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	*count = 0;

	p11_debug ("out: 0x%lx", rv);
	return rv;
}

static CK_RV
sys_C_GetMechanismInfo (CK_SLOT_ID id,
                        CK_MECHANISM_TYPE type,
                        CK_MECHANISM_INFO_PTR info)
{
	return_val_if_fail (info != NULL, CKR_ARGUMENTS_BAD);
	return_val_if_fail (check_slot (id), CKR_SLOT_ID_INVALID);
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_InitToken (CK_SLOT_ID id,
                 CK_UTF8CHAR_PTR pin,
                 CK_ULONG pin_len,
                 CK_UTF8CHAR_PTR label)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_WaitForSlotEvent (CK_FLAGS flags,
                        CK_SLOT_ID_PTR slot,
                        CK_VOID_PTR reserved)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_OpenSession (CK_SLOT_ID id,
                   CK_FLAGS flags,
                   CK_VOID_PTR user_data,
                   CK_NOTIFY callback,
                   CK_SESSION_HANDLE_PTR handle)
{
	p11_session *session;
	p11_token *token;
	CK_RV rv = CKR_OK;

	return_val_if_fail (check_slot (id), CKR_SLOT_ID_INVALID);
	return_val_if_fail (handle != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		rv = lookup_slot_inlock (id, &token);
		if (rv != CKR_OK) {
			/* fail below */;

		} else if (!(flags & CKF_SERIAL_SESSION)) {
			rv = CKR_SESSION_PARALLEL_NOT_SUPPORTED;

		} else if ((flags & CKF_RW_SESSION) &&
		           !p11_token_is_writable (token)) {
			rv = CKR_TOKEN_WRITE_PROTECTED;

		} else {
			session = p11_session_new (token);
			if (p11_dict_set (gl.sessions, &session->handle, session)) {
				rv = CKR_OK;
				if (flags & CKF_RW_SESSION)
					session->read_write = true;
				*handle = session->handle;
				p11_debug ("session: %lu", *handle);
			} else {
				warn_if_reached ();
				rv = CKR_GENERAL_ERROR;
			}
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_CloseSession (CK_SESSION_HANDLE handle)
{
	CK_RV rv = CKR_OK;

	p11_debug ("in");

	p11_lock ();

		if (!gl.sessions) {
			rv = CKR_CRYPTOKI_NOT_INITIALIZED;

		} else if (p11_dict_remove (gl.sessions, &handle)) {
			rv = CKR_OK;

		} else {
			rv = CKR_SESSION_HANDLE_INVALID;
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_CloseAllSessions (CK_SLOT_ID id)
{
	CK_SESSION_HANDLE *handle;
	p11_session *session;
	p11_token *token;
	p11_dictiter iter;
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_slot_inlock (id, &token);
		if (rv == CKR_OK) {
			p11_dict_iterate (gl.sessions, &iter);
			while (p11_dict_next (&iter, (void **)&handle, (void **)&session)) {
				if (session->token == token)
					p11_dict_remove (gl.sessions, handle);
			}
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetFunctionStatus (CK_SESSION_HANDLE handle)
{
	return CKR_SESSION_PARALLEL_NOT_SUPPORTED;
}

static CK_RV
sys_C_CancelFunction (CK_SESSION_HANDLE handle)
{
	return CKR_SESSION_PARALLEL_NOT_SUPPORTED;
}

static CK_RV
sys_C_GetSessionInfo (CK_SESSION_HANDLE handle,
                      CK_SESSION_INFO_PTR info)
{
	p11_session *session;
	CK_RV rv;

	return_val_if_fail (info != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			info->flags = CKF_SERIAL_SESSION;
			info->state = CKS_RO_PUBLIC_SESSION;
			info->slotID = p11_token_get_slot (session->token);
			info->ulDeviceError = 0;
		}


	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_InitPIN (CK_SESSION_HANDLE handle,
               CK_UTF8CHAR_PTR pin,
               CK_ULONG pin_len)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_SetPIN (CK_SESSION_HANDLE handle,
              CK_UTF8CHAR_PTR old_pin,
              CK_ULONG old_pin_len,
              CK_UTF8CHAR_PTR new_pin,
              CK_ULONG new_pin_len)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_GetOperationState (CK_SESSION_HANDLE handle,
                         CK_BYTE_PTR operation_state,
                         CK_ULONG_PTR operation_state_len)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_SetOperationState (CK_SESSION_HANDLE handle,
                         CK_BYTE_PTR operation_state,
                         CK_ULONG operation_state_len,
                         CK_OBJECT_HANDLE encryption_key,
                         CK_OBJECT_HANDLE authentication_key)
{
	p11_debug ("not supported");
	return CKR_FUNCTION_NOT_SUPPORTED;
}

static CK_RV
sys_C_Login (CK_SESSION_HANDLE handle,
             CK_USER_TYPE user_type,
             CK_UTF8CHAR_PTR pin,
             CK_ULONG pin_len)
{
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, NULL);
		/* Since the trust module is designed as a replacement
		 * of nssckbi, it works as a general access device as
		 * described in the table 1.1 of:
		 * <https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/PKCS11_Implement>.
		 *
		 * That means that the tokens provided by this module
		 * shall be accessed without login, and if the caller
		 * tries to login, the attempt should fail with an
		 * explicit error (otherwise, the caller cannot
		 * distinguish the user's login status, see also
		 * C_Logout below). */
		if (rv == CKR_OK)
			rv = CKR_USER_TYPE_INVALID;

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_Logout (CK_SESSION_HANDLE handle)
{
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, NULL);
		if (rv == CKR_OK)
			rv = CKR_USER_NOT_LOGGED_IN;

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_CreateObject (CK_SESSION_HANDLE handle,
                    CK_ATTRIBUTE_PTR template,
                    CK_ULONG count,
                    CK_OBJECT_HANDLE_PTR new_object)
{
	p11_session *session;
	p11_index *index;
	CK_BBOOL val;
	CK_RV rv;

	return_val_if_fail (new_object != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			if (p11_attrs_findn_bool (template, count, CKA_TOKEN, &val) && val)
				index = p11_token_index (session->token);
			else
				index = session->index;
			rv = check_index_writable (session, index);
		}

		if (rv == CKR_OK)
			rv = p11_index_add (index, template, count, new_object);

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_CopyObject (CK_SESSION_HANDLE handle,
                  CK_OBJECT_HANDLE object,
                  CK_ATTRIBUTE_PTR template,
                  CK_ULONG count,
                  CK_OBJECT_HANDLE_PTR new_object)
{
	CK_BBOOL vfalse = CK_FALSE;
	CK_ATTRIBUTE token = { CKA_TOKEN, &vfalse, sizeof (vfalse) };
	p11_session *session;
	CK_ATTRIBUTE *original;
	CK_ATTRIBUTE *attrs;
	p11_index *index;
	CK_BBOOL val;
	CK_RV rv;

	return_val_if_fail (new_object != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			original = lookup_object_inlock (session, object, &index);
			if (original == NULL)
				rv = CKR_OBJECT_HANDLE_INVALID;
		}

		if (rv == CKR_OK) {
			if (p11_attrs_findn_bool (template, count, CKA_TOKEN, &val))
				index = val ? p11_token_index (session->token) : session->index;
			rv = check_index_writable (session, index);
		}

		if (rv == CKR_OK) {
			attrs = p11_attrs_dup (original);
			attrs = p11_attrs_buildn (attrs, template, count);
			attrs = p11_attrs_build (attrs, &token, NULL);
			rv = p11_index_take (index, attrs, new_object);
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_DestroyObject (CK_SESSION_HANDLE handle,
                     CK_OBJECT_HANDLE object)
{
	p11_session *session;
	CK_ATTRIBUTE *attrs;
	p11_index *index;
	CK_BBOOL val;
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			attrs = lookup_object_inlock (session, object, &index);
			if (attrs == NULL)
				rv = CKR_OBJECT_HANDLE_INVALID;
			else
				rv = check_index_writable (session, index);

			if (rv == CKR_OK && p11_attrs_find_bool (attrs, CKA_MODIFIABLE, &val) && !val) {
				/* TODO: This should be replaced with CKR_ACTION_PROHIBITED */
				rv = CKR_ATTRIBUTE_READ_ONLY;
			}

			if (rv == CKR_OK)
				rv = p11_index_remove (index, object);
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetObjectSize (CK_SESSION_HANDLE handle,
                     CK_OBJECT_HANDLE object,
                     CK_ULONG_PTR size)
{
	p11_session *session;
	CK_RV rv;

	return_val_if_fail (size != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			if (lookup_object_inlock (session, object, NULL)) {
				*size = CK_UNAVAILABLE_INFORMATION;
				rv = CKR_OK;
			} else {
				rv = CKR_OBJECT_HANDLE_INVALID;
			}
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_GetAttributeValue (CK_SESSION_HANDLE handle,
                         CK_OBJECT_HANDLE object,
                         CK_ATTRIBUTE_PTR template,
                         CK_ULONG count)
{
	CK_ATTRIBUTE *attrs;
	CK_ATTRIBUTE *result;
	CK_ATTRIBUTE *attr;
	p11_session *session;
	char *string;
	CK_ULONG i;
	CK_RV rv;

	p11_debug ("in: %lu, %lu", handle, object);

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			attrs = lookup_object_inlock (session, object, NULL);
			if (attrs == NULL)
				rv = CKR_OBJECT_HANDLE_INVALID;
		}

		if (rv == CKR_OK) {
			for (i = 0; i < count; i++) {
				result = template + i;
				attr = p11_attrs_find (attrs, result->type);
				if (!attr) {
					result->ulValueLen = (CK_ULONG)-1;
					rv = CKR_ATTRIBUTE_TYPE_INVALID;
					continue;
				}

				if (!result->pValue) {
					result->ulValueLen = attr->ulValueLen;
					continue;
				}

				if (result->ulValueLen >= attr->ulValueLen) {
					memcpy (result->pValue, attr->pValue, attr->ulValueLen);
					result->ulValueLen = attr->ulValueLen;
					continue;
				}

				result->ulValueLen = (CK_ULONG)-1;
				rv = CKR_BUFFER_TOO_SMALL;
			}
		}

	p11_unlock ();

	if (p11_debugging) {
		string = p11_attrs_to_string (template, count);
		p11_debug ("out: 0x%lx %s", rv, string);
		free (string);
	}

	return rv;
}

static CK_RV
sys_C_SetAttributeValue (CK_SESSION_HANDLE handle,
                         CK_OBJECT_HANDLE object,
                         CK_ATTRIBUTE_PTR template,
                         CK_ULONG count)
{
	p11_session *session;
	CK_ATTRIBUTE *attrs;
	p11_index *index;
	CK_BBOOL val;
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			attrs = lookup_object_inlock (session, object, &index);
			if (attrs == NULL) {
				rv = CKR_OBJECT_HANDLE_INVALID;
			} else if (p11_attrs_find_bool (attrs, CKA_MODIFIABLE, &val) && !val) {
				/* TODO: This should be replaced with CKR_ACTION_PROHIBITED */
				rv = CKR_ATTRIBUTE_READ_ONLY;
			}

			if (rv == CKR_OK)
				rv = check_index_writable (session, index);

			/* Reload the item if applicable */
			if (rv == CKR_OK && index == p11_token_index (session->token)) {
				if (p11_token_reload (session->token, attrs)) {
					attrs = p11_index_lookup (index, object);
					if (p11_attrs_find_bool (attrs, CKA_MODIFIABLE, &val) && !val) {
						/* TODO: This should be replaced with CKR_ACTION_PROHIBITED */
						rv = CKR_ATTRIBUTE_READ_ONLY;
					}
				}
			}

			if (rv == CKR_OK)
				rv = p11_index_set (index, object, template, count);
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_FindObjectsInit (CK_SESSION_HANDLE handle,
                       CK_ATTRIBUTE_PTR template,
                       CK_ULONG count)
{
	p11_index *indices[2] = { NULL, NULL };
	CK_BBOOL want_token_objects;
	CK_BBOOL want_session_objects;
	CK_BBOOL token;
	FindObjects *find;
	p11_session *session;
	char *string;
	CK_RV rv;
	int n = 0;
	CK_OBJECT_CLASS klass;

	if (p11_debugging) {
		string = p11_attrs_to_string (template, count);
		p11_debug ("in: %lu, %s", handle, string);
		free (string);
	}

	p11_lock ();

		/* Are we searching for token objects? */
		if (p11_attrs_findn_bool (template, count, CKA_TOKEN, &token)) {
			want_token_objects = token;
			want_session_objects = !token;
		} else {
			want_token_objects = CK_TRUE;
			want_session_objects = CK_TRUE;
		}

		rv = lookup_session (handle, &session);

		/* Refresh from disk if this session hasn't yet */
		if (rv == CKR_OK) {
			if (want_session_objects)
				indices[n++] = session->index;
			if (want_token_objects) {
				if (!session->loaded)
					p11_token_load (session->token);
				if (rv == CKR_OK) {
					session->loaded = CK_TRUE;
					indices[n++] = p11_token_index (session->token);
				}
			}
		}

		if (rv == CKR_OK) {
			find = calloc (1, sizeof (FindObjects));
			warn_if_fail (find != NULL);

			/* Make a snapshot of what we're matching */
			if (find) {
				find->match = p11_attrs_buildn (NULL, template, count);
				warn_if_fail (find->match != NULL);

				/* Build a session snapshot of all objects */
				find->iterator = 0;
				find->snapshot = p11_index_snapshot (indices[0], indices[1], template, count);
				warn_if_fail (find->snapshot != NULL);

				if (p11_attrs_find_ulong (find->match, CKA_CLASS, &klass) &&
				    klass == CKO_X_CERTIFICATE_EXTENSION) {
					find->public_key = p11_attrs_find (find->match, CKA_PUBLIC_KEY_INFO);
					find->extensions = p11_dict_new (p11_oid_hash,
									 p11_oid_equal,
									 free, NULL);
				}
			}

			if (!find || !find->snapshot || !find->match)
				rv = CKR_HOST_MEMORY;
			else
				p11_session_set_operation (session, find_objects_free, find);
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static bool
match_for_broken_nss_serial_number_lookups (CK_ATTRIBUTE *attr,
                                            CK_ATTRIBUTE *match)
{
	unsigned char der[32];
	unsigned char *val_val;
	size_t der_len;
	size_t val_len;
	int len_len;

	if (!match->pValue || !match->ulValueLen ||
	    match->ulValueLen == CKA_INVALID ||
	    attr->ulValueLen == CKA_INVALID)
		return false;

	der_len = sizeof (der);
	der[0] = ASN1_TAG_INTEGER | ASN1_CLASS_UNIVERSAL;
	len_len = der_len - 1;
	asn1_length_der (match->ulValueLen, der + 1, &len_len);
	assert (len_len < (der_len - 1));
	der_len = 1 + len_len;

	val_val = attr->pValue;
	val_len = attr->ulValueLen;

	if (der_len + match->ulValueLen != val_len)
		return false;

	if (memcmp (der, val_val, der_len) != 0 ||
	    memcmp (match->pValue, val_val + der_len, match->ulValueLen) != 0)
		return false;

	p11_debug ("worked around serial number lookup that's not DER encoded");
	return true;
}

static bool
find_objects_match (CK_ATTRIBUTE *attrs,
                    FindObjects *find)
{
	CK_OBJECT_CLASS klass;
	CK_ATTRIBUTE *attr, *match = find->match;

	for (; !p11_attrs_terminator (match); match++) {
		attr = p11_attrs_find ((CK_ATTRIBUTE *)attrs, match->type);
		if (!attr)
			return false;
		if (p11_attr_equal (attr, match))
			continue;

		/*
		 * WORKAROUND: NSS calls us asking for CKA_SERIAL_NUMBER items that are
		 * not DER encoded. It shouldn't be doing this. We never return any certificate
		 * serial numbers that are not DER encoded.
		 *
		 * So work around the issue here while the NSS guys fix this issue.
		 * This code should be removed in future versions.
		 */

		if (attr->type == CKA_SERIAL_NUMBER &&
		    p11_attrs_find_ulong (attrs, CKA_CLASS, &klass) &&
		    klass == CKO_NSS_TRUST) {
			if (match_for_broken_nss_serial_number_lookups (attr, match))
				continue;
		}

		return false;
	}

	/*
	 * WORKAROUND: We keep all objects in the database, while PKIX
	 * doesn't allow multiple extensions identified by the same
	 * OID can be attached to a certificate.  Check any duplicate
	 * and only return the first matching object.
	 */
	if (find->public_key &&
	    p11_attrs_find_ulong (attrs, CKA_CLASS, &klass) &&
	    klass == CKO_X_CERTIFICATE_EXTENSION) {
		CK_ATTRIBUTE *oid = p11_attrs_find (attrs, CKA_OBJECT_ID);
		if (oid) {
			void *value;
			if (p11_oid_simple (oid->pValue, oid->ulValueLen) &&
			    p11_dict_get (find->extensions, oid->pValue)) {
				p11_debug ("duplicate extension object");
				return false;
			}
			value = memdup (oid->pValue, oid->ulValueLen);
			return_val_if_fail (value != NULL, false);
			if (!p11_dict_set (find->extensions, value, value))
				warn_if_reached ();
		}
	}

	return true;
}

static CK_RV
sys_C_FindObjects (CK_SESSION_HANDLE handle,
                   CK_OBJECT_HANDLE_PTR objects,
                   CK_ULONG max_count,
                   CK_ULONG_PTR count)
{
	CK_OBJECT_HANDLE object;
	CK_ATTRIBUTE *attrs;
	FindObjects *find = NULL;
	p11_session *session;
	CK_ULONG matched;
	p11_index *index;
	CK_RV rv;

	return_val_if_fail (count != NULL, CKR_ARGUMENTS_BAD);

	p11_debug ("in: %lu, %lu", handle, max_count);

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			if (session->cleanup != find_objects_free)
				rv = CKR_OPERATION_NOT_INITIALIZED;
			find = session->operation;
		}

		if (rv == CKR_OK) {
			matched = 0;
			while (matched < max_count) {
				object = find->snapshot[find->iterator];
				if (!object)
					break;

				find->iterator++;

				attrs = lookup_object_inlock (session, object, &index);
				if (attrs == NULL)
					continue;

				if (find_objects_match (attrs, find)) {
					objects[matched] = object;
					matched++;
				}
			}

			*count = matched;
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx, %lu", handle, *count);

	return rv;
}

static CK_RV
sys_C_FindObjectsFinal (CK_SESSION_HANDLE handle)
{
	p11_session *session;
	CK_RV rv;

	p11_debug ("in");

	p11_lock ();

		rv = lookup_session (handle, &session);
		if (rv == CKR_OK) {
			if (session->cleanup != find_objects_free)
				rv = CKR_OPERATION_NOT_INITIALIZED;
			else
				p11_session_set_operation (session, NULL, NULL);
		}

	p11_unlock ();

	p11_debug ("out: 0x%lx", rv);

	return rv;
}

static CK_RV
sys_C_EncryptInit (CK_SESSION_HANDLE handle,
                   CK_MECHANISM_PTR mechanism,
                   CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_Encrypt (CK_SESSION_HANDLE handle,
               CK_BYTE_PTR data,
               CK_ULONG data_len,
               CK_BYTE_PTR encrypted_data,
               CK_ULONG_PTR encrypted_data_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_EncryptUpdate (CK_SESSION_HANDLE handle,
                     CK_BYTE_PTR part,
                     CK_ULONG part_len,
                     CK_BYTE_PTR encrypted_part,
                     CK_ULONG_PTR encrypted_part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_EncryptFinal (CK_SESSION_HANDLE handle,
                    CK_BYTE_PTR last_part,
                    CK_ULONG_PTR last_part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DecryptInit (CK_SESSION_HANDLE handle,
                   CK_MECHANISM_PTR mechanism,
                   CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_Decrypt (CK_SESSION_HANDLE handle,
               CK_BYTE_PTR enc_data,
               CK_ULONG enc_data_len,
               CK_BYTE_PTR data,
               CK_ULONG_PTR data_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DecryptUpdate (CK_SESSION_HANDLE handle,
                     CK_BYTE_PTR enc_part,
                     CK_ULONG enc_part_len,
                     CK_BYTE_PTR part,
                     CK_ULONG_PTR part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DecryptFinal (CK_SESSION_HANDLE handle,
                    CK_BYTE_PTR last_part,
                    CK_ULONG_PTR last_part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DigestInit (CK_SESSION_HANDLE handle,
                  CK_MECHANISM_PTR mechanism)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_Digest (CK_SESSION_HANDLE handle,
              CK_BYTE_PTR data,
              CK_ULONG data_len,
              CK_BYTE_PTR digest,
              CK_ULONG_PTR digest_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DigestUpdate (CK_SESSION_HANDLE handle,
                    CK_BYTE_PTR part,
                    CK_ULONG part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DigestKey (CK_SESSION_HANDLE handle,
                 CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DigestFinal (CK_SESSION_HANDLE handle,
                   CK_BYTE_PTR digest,
                   CK_ULONG_PTR digest_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_SignInit (CK_SESSION_HANDLE handle,
                CK_MECHANISM_PTR mechanism,
                CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_Sign (CK_SESSION_HANDLE handle,
            CK_BYTE_PTR data,
            CK_ULONG data_len,
            CK_BYTE_PTR signature,
            CK_ULONG_PTR signature_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_SignUpdate (CK_SESSION_HANDLE handle,
                  CK_BYTE_PTR part,
                  CK_ULONG part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_SignFinal (CK_SESSION_HANDLE handle,
                 CK_BYTE_PTR signature,
                 CK_ULONG_PTR signature_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_SignRecoverInit (CK_SESSION_HANDLE handle,
                       CK_MECHANISM_PTR mechanism,
                       CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_SignRecover (CK_SESSION_HANDLE handle,
                   CK_BYTE_PTR data,
                   CK_ULONG data_len,
                   CK_BYTE_PTR signature,
                   CK_ULONG_PTR signature_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_VerifyInit (CK_SESSION_HANDLE handle,
                  CK_MECHANISM_PTR mechanism,
                  CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_Verify (CK_SESSION_HANDLE handle,
              CK_BYTE_PTR data,
              CK_ULONG data_len,
              CK_BYTE_PTR signature,
              CK_ULONG signature_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_VerifyUpdate (CK_SESSION_HANDLE handle,
                    CK_BYTE_PTR part,
                    CK_ULONG part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_VerifyFinal (CK_SESSION_HANDLE handle,
                   CK_BYTE_PTR signature,
                   CK_ULONG signature_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_VerifyRecoverInit (CK_SESSION_HANDLE handle,
                         CK_MECHANISM_PTR mechanism,
                         CK_OBJECT_HANDLE key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_VerifyRecover (CK_SESSION_HANDLE handle,
                     CK_BYTE_PTR signature,
                     CK_ULONG signature_len,
                     CK_BYTE_PTR data,
                     CK_ULONG_PTR data_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DigestEncryptUpdate (CK_SESSION_HANDLE handle,
                           CK_BYTE_PTR part,
                           CK_ULONG part_len,
                           CK_BYTE_PTR enc_part,
                           CK_ULONG_PTR enc_part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DecryptDigestUpdate (CK_SESSION_HANDLE handle,
                           CK_BYTE_PTR enc_part,
                           CK_ULONG enc_part_len,
                           CK_BYTE_PTR part,
                           CK_ULONG_PTR part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_SignEncryptUpdate (CK_SESSION_HANDLE handle,
                         CK_BYTE_PTR part,
                         CK_ULONG part_len,
                         CK_BYTE_PTR enc_part,
                         CK_ULONG_PTR enc_part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_DecryptVerifyUpdate (CK_SESSION_HANDLE handle,
                           CK_BYTE_PTR enc_part,
                           CK_ULONG enc_part_len,
                           CK_BYTE_PTR part,
                           CK_ULONG_PTR part_len)
{
	return_val_if_reached (CKR_OPERATION_NOT_INITIALIZED);
}

static CK_RV
sys_C_GenerateKey (CK_SESSION_HANDLE handle,
                   CK_MECHANISM_PTR mechanism,
                   CK_ATTRIBUTE_PTR template,
                   CK_ULONG count,
                   CK_OBJECT_HANDLE_PTR key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_GenerateKeyPair (CK_SESSION_HANDLE handle,
                       CK_MECHANISM_PTR mechanism,
                       CK_ATTRIBUTE_PTR pub_template,
                       CK_ULONG pub_count,
                       CK_ATTRIBUTE_PTR priv_template,
                       CK_ULONG priv_count,
                       CK_OBJECT_HANDLE_PTR pub_key,
                       CK_OBJECT_HANDLE_PTR priv_key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_WrapKey (CK_SESSION_HANDLE handle,
               CK_MECHANISM_PTR mechanism,
               CK_OBJECT_HANDLE wrapping_key,
               CK_OBJECT_HANDLE key,
               CK_BYTE_PTR wrapped_key,
               CK_ULONG_PTR wrapped_key_len)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_UnwrapKey (CK_SESSION_HANDLE handle,
                 CK_MECHANISM_PTR mechanism,
                 CK_OBJECT_HANDLE unwrapping_key,
                 CK_BYTE_PTR wrapped_key,
                 CK_ULONG wrapped_key_len,
                 CK_ATTRIBUTE_PTR template,
                 CK_ULONG count,
                 CK_OBJECT_HANDLE_PTR key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_DeriveKey (CK_SESSION_HANDLE handle,
                 CK_MECHANISM_PTR mechanism,
                 CK_OBJECT_HANDLE base_key,
                 CK_ATTRIBUTE_PTR template,
                 CK_ULONG count,
                 CK_OBJECT_HANDLE_PTR key)
{
	return_val_if_reached (CKR_MECHANISM_INVALID);
}

static CK_RV
sys_C_SeedRandom (CK_SESSION_HANDLE handle,
                  CK_BYTE_PTR seed,
                  CK_ULONG seed_len)
{
	return_val_if_reached (CKR_RANDOM_NO_RNG);
}

static CK_RV
sys_C_GenerateRandom (CK_SESSION_HANDLE handle,
                      CK_BYTE_PTR random_data,
                      CK_ULONG random_len)
{
	return_val_if_reached (CKR_RANDOM_NO_RNG);
}

/* --------------------------------------------------------------------
 * MODULE ENTRY POINT
 */

static CK_FUNCTION_LIST sys_function_list = {
	{ CRYPTOKI_VERSION_MAJOR, CRYPTOKI_VERSION_MINOR },  /* version */
	sys_C_Initialize,
	sys_C_Finalize,
	sys_C_GetInfo,
	sys_C_GetFunctionList,
	sys_C_GetSlotList,
	sys_C_GetSlotInfo,
	sys_C_GetTokenInfo,
	sys_C_GetMechanismList,
	sys_C_GetMechanismInfo,
	sys_C_InitToken,
	sys_C_InitPIN,
	sys_C_SetPIN,
	sys_C_OpenSession,
	sys_C_CloseSession,
	sys_C_CloseAllSessions,
	sys_C_GetSessionInfo,
	sys_C_GetOperationState,
	sys_C_SetOperationState,
	sys_C_Login,
	sys_C_Logout,
	sys_C_CreateObject,
	sys_C_CopyObject,
	sys_C_DestroyObject,
	sys_C_GetObjectSize,
	sys_C_GetAttributeValue,
	sys_C_SetAttributeValue,
	sys_C_FindObjectsInit,
	sys_C_FindObjects,
	sys_C_FindObjectsFinal,
	sys_C_EncryptInit,
	sys_C_Encrypt,
	sys_C_EncryptUpdate,
	sys_C_EncryptFinal,
	sys_C_DecryptInit,
	sys_C_Decrypt,
	sys_C_DecryptUpdate,
	sys_C_DecryptFinal,
	sys_C_DigestInit,
	sys_C_Digest,
	sys_C_DigestUpdate,
	sys_C_DigestKey,
	sys_C_DigestFinal,
	sys_C_SignInit,
	sys_C_Sign,
	sys_C_SignUpdate,
	sys_C_SignFinal,
	sys_C_SignRecoverInit,
	sys_C_SignRecover,
	sys_C_VerifyInit,
	sys_C_Verify,
	sys_C_VerifyUpdate,
	sys_C_VerifyFinal,
	sys_C_VerifyRecoverInit,
	sys_C_VerifyRecover,
	sys_C_DigestEncryptUpdate,
	sys_C_DecryptDigestUpdate,
	sys_C_SignEncryptUpdate,
	sys_C_DecryptVerifyUpdate,
	sys_C_GenerateKey,
	sys_C_GenerateKeyPair,
	sys_C_WrapKey,
	sys_C_UnwrapKey,
	sys_C_DeriveKey,
	sys_C_SeedRandom,
	sys_C_GenerateRandom,
	sys_C_GetFunctionStatus,
	sys_C_CancelFunction,
	sys_C_WaitForSlotEvent
};

#ifdef OS_WIN32
__declspec(dllexport)
#endif

CK_RV
C_GetFunctionList (CK_FUNCTION_LIST_PTR_PTR list)
{
	p11_library_init_once ();
	return sys_C_GetFunctionList (list);
}

CK_ULONG
p11_module_next_id (void)
{
	static CK_ULONG unique = 0x10;
	return (unique)++;
}
