/*
 * Copyright (c) 2000-2006 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#include <mach/port.h>
#include <mach/message.h>
#include <mach/kern_return.h>
#include <mach/host_priv.h>

#include <kern/kern_types.h>
#include <kern/kalloc.h>
#include <kern/host.h>
#include <kern/ipc_kobject.h>

#include <ipc/ipc_port.h>

#include <UserNotification/UNDTypes.h>
#include <UserNotification/UNDRequest.h>
#include <UserNotification/UNDReplyServer.h>
#include <UserNotification/KUNCUserNotifications.h>

#ifdef KERNEL_CF
// external
#include <IOKit/IOCFSerialize.h>
#include <IOKit/IOCFUnserialize.h>
#endif

/*
 * DEFINES AND STRUCTURES
 */

struct UNDReply {
	decl_lck_mtx_data(,lock)				/* UNDReply lock */
	int				userLandNotificationKey;
	KUNCUserNotificationCallBack 	callback;
	boolean_t			inprogress;
	ipc_port_t			self_port;	/* Our port */
};

#define UNDReply_lock(reply)		lck_mtx_lock(&reply->lock)
#define UNDReply_unlock(reply)		lck_mtx_unlock(&reply->lock)

extern lck_grp_t LockCompatGroup;

/* forward declarations */
void UNDReply_deallocate(
	UNDReplyRef		reply);


void
UNDReply_deallocate(
	UNDReplyRef		reply)
{
	ipc_port_t port;

	UNDReply_lock(reply);
	port = reply->self_port;
	assert(IP_VALID(port));
	ipc_kobject_set(port, IKO_NULL, IKOT_NONE);
	reply->self_port = IP_NULL;
	UNDReply_unlock(reply);

	ipc_port_dealloc_kernel(port);
	lck_mtx_destroy(&reply->lock, &LockCompatGroup);
	kfree(reply, sizeof(struct UNDReply));
	return;
}

static UNDServerRef
UNDServer_reference(void)
{
	UNDServerRef UNDServer;
	kern_return_t kr;

	kr = host_get_user_notification_port(host_priv_self(), &UNDServer);
	assert(kr == KERN_SUCCESS);
	return UNDServer;
}

static void
UNDServer_deallocate(
	UNDServerRef	UNDServer)
{
	if (IP_VALID(UNDServer))
		ipc_port_release_send(UNDServer);
}

/* 
 * UND Mig Callbacks
*/

kern_return_t
UNDAlertCompletedWithResult_rpc (
        UNDReplyRef 		reply,
        int 			result,
        xmlData_t		keyRef,		/* raw XML bytes */
#ifdef KERNEL_CF
        mach_msg_type_number_t	keyLen)
#else
        __unused mach_msg_type_number_t	keyLen)
#endif
{
#ifdef KERNEL_CF
	CFStringRef		xmlError = NULL;
	CFDictionaryRef 	dict = NULL;
#else
	const void *dict = (const void *)keyRef;
#endif

	if (reply == UND_REPLY_NULL || !reply->inprogress)
		return KERN_INVALID_ARGUMENT;

	/*
	 * JMM - No C vesion of the Unserialize code in-kernel
	 * and no C type for a CFDictionary either.  For now,
	 * just pass the raw keyRef through.
	 */
#ifdef KERNEL_CF 
	if (keyRef && keyLen) {
		dict = IOCFUnserialize(keyRef, NULL, NULL, &xmlError);
	}

	if (xmlError) {
		CFShow(xmlError);
		CFRelease(xmlError);
	}
#endif /* KERNEL_CF */

	if (reply->callback) {
		(reply->callback)((int)(KUNCUserNotificationID)reply, result, dict);
	}

	UNDReply_lock(reply);
	reply->inprogress = FALSE;
	reply->userLandNotificationKey = -1;
	UNDReply_unlock(reply);
	UNDReply_deallocate(reply);
	return KERN_SUCCESS;
}

/*
 *	Routine: UNDNotificationCreated_rpc
 *
 *		Intermediate routine.  Allows the kernel mechanism
 *		to be informed that the notification request IS
 *		being processed by the user-level daemon, and how
 *		to identify that request.
 */
kern_return_t
UNDNotificationCreated_rpc (
        UNDReplyRef	reply,
        int		userLandNotificationKey)
{
	if (reply == UND_REPLY_NULL)
		return KERN_INVALID_ARGUMENT;

	UNDReply_lock(reply);
	if (reply->inprogress || reply->userLandNotificationKey != -1) {
		UNDReply_unlock(reply);
		return KERN_INVALID_ARGUMENT;
	}
	reply->userLandNotificationKey = userLandNotificationKey;
	UNDReply_unlock(reply);
	return KERN_SUCCESS;
}

/*
 * KUNC Functions
*/


KUNCUserNotificationID
KUNCGetNotificationID(void)
{
	UNDReplyRef reply;

	reply = (UNDReplyRef) kalloc(sizeof(struct UNDReply));
	if (reply != UND_REPLY_NULL) {
		reply->self_port = ipc_port_alloc_kernel();
		if (reply->self_port == IP_NULL) {
			kfree(reply, sizeof(struct UNDReply));
			reply = UND_REPLY_NULL;
		} else {
			lck_mtx_init(&reply->lock, &LockCompatGroup, LCK_ATTR_NULL);
			reply->userLandNotificationKey = -1;
			reply->inprogress = FALSE;
			ipc_kobject_set(reply->self_port,
					(ipc_kobject_t)reply,
					IKOT_UND_REPLY);
		}
	}
	return (KUNCUserNotificationID) reply;
}


kern_return_t KUNCExecute(char executionPath[1024], int uid, int gid)
{

	UNDServerRef UNDServer;

	UNDServer = UNDServer_reference();
	if (IP_VALID(UNDServer)) {
		kern_return_t kr;
		kr = UNDExecute_rpc(UNDServer, executionPath, uid, gid);
		UNDServer_deallocate(UNDServer);
		return kr;
	}
	return MACH_SEND_INVALID_DEST;
}

kern_return_t KUNCUserNotificationCancel(
	KUNCUserNotificationID id)
{
	UNDReplyRef reply = (UNDReplyRef)id;
	kern_return_t kr;
	int ulkey;

	if (reply == UND_REPLY_NULL)
		return KERN_INVALID_ARGUMENT;

	UNDReply_lock(reply);
	if (!reply->inprogress) {
		UNDReply_unlock(reply);
		return KERN_INVALID_ARGUMENT;
	}

	reply->inprogress = FALSE;
	if ((ulkey = reply->userLandNotificationKey) != 0) {
		UNDServerRef UNDServer;

		reply->userLandNotificationKey = 0;
		UNDReply_unlock(reply);

		UNDServer = UNDServer_reference();
		if (IP_VALID(UNDServer)) {
			kr = UNDCancelNotification_rpc(UNDServer,ulkey);
			UNDServer_deallocate(UNDServer);
		} else
			kr = MACH_SEND_INVALID_DEST;
	} else {
		UNDReply_unlock(reply);
		kr = KERN_SUCCESS;
	}
	UNDReply_deallocate(reply);
	return kr;
}

kern_return_t
KUNCUserNotificationDisplayNotice(
	int		noticeTimeout,
	unsigned	flags,
	char		*iconPath,
	char		*soundPath,
	char		*localizationPath,
	char		*alertHeader,
	char		*alertMessage,
	char		*defaultButtonTitle)
{
	UNDServerRef UNDServer;

	UNDServer = UNDServer_reference();
	if (IP_VALID(UNDServer)) {
		kern_return_t kr;
		kr = UNDDisplayNoticeSimple_rpc(UNDServer,
					noticeTimeout,
					flags,
					iconPath,
					soundPath,
					localizationPath,
					alertHeader,
					alertMessage,
					defaultButtonTitle);
		UNDServer_deallocate(UNDServer);
		return kr;
	}
	return MACH_SEND_INVALID_DEST;
}

kern_return_t
KUNCUserNotificationDisplayAlert(
	int		alertTimeout,
	unsigned	flags,
	char		*iconPath,
	char		*soundPath,
	char		*localizationPath,
	char		*alertHeader,
	char		*alertMessage,
	char		*defaultButtonTitle,
	char		*alternateButtonTitle,
	char		*otherButtonTitle,
	unsigned	*responseFlags)
{
	UNDServerRef	UNDServer;
	
	UNDServer = UNDServer_reference();
	if (IP_VALID(UNDServer)) {
		kern_return_t	kr;
		kr = UNDDisplayAlertSimple_rpc(UNDServer,
				       alertTimeout,
				       flags,
				       iconPath,
				       soundPath,
				       localizationPath,
				       alertHeader,
				       alertMessage,
				       defaultButtonTitle,
				       alternateButtonTitle,
				       otherButtonTitle,
				       responseFlags);
		UNDServer_deallocate(UNDServer);
		return kr;
	}
	return MACH_SEND_INVALID_DEST;
}

kern_return_t
KUNCUserNotificationDisplayFromBundle(
	KUNCUserNotificationID	     id,
	char 			     *bundlePath,
	char			     *fileName,
	char			     *fileExtension,
	char			     *messageKey,
	char			     *tokenString,
	KUNCUserNotificationCallBack callback,
	__unused int			contextKey)
{
	UNDReplyRef reply = (UNDReplyRef)id;
	UNDServerRef UNDServer;
	ipc_port_t reply_port;

	if (reply == UND_REPLY_NULL)
		return KERN_INVALID_ARGUMENT;
	UNDReply_lock(reply);
	if (reply->inprogress == TRUE || reply->userLandNotificationKey != -1) {
		UNDReply_unlock(reply);
		return KERN_INVALID_ARGUMENT;
	}
	reply->inprogress = TRUE;
	reply->callback = callback;
	reply_port = ipc_port_make_send(reply->self_port);
	UNDReply_unlock(reply);

	UNDServer = UNDServer_reference();
	if (IP_VALID(UNDServer)) {
		kern_return_t kr;

		kr = UNDDisplayCustomFromBundle_rpc(UNDServer,
					    reply_port,
					    bundlePath,
					    fileName,
					    fileExtension,
					    messageKey,
					    tokenString);
		UNDServer_deallocate(UNDServer);
		return kr;
	}
	return MACH_SEND_INVALID_DEST;
}

/*
 *	Routine: convert_port_to_UNDReply
 *
 *		MIG helper routine to convert from a mach port to a
 *		UNDReply object.
 *
 *	Assumptions:
 *		Nothing locked.
 */
UNDReplyRef
convert_port_to_UNDReply(
	ipc_port_t port)
{
	if (IP_VALID(port)) {
		UNDReplyRef reply;

		ip_lock(port);
		if (!ip_active(port) || (ip_kotype(port) != IKOT_UND_REPLY)) {
			ip_unlock(port);
			return UND_REPLY_NULL;
		}
		reply = (UNDReplyRef) port->ip_kobject;
		assert(reply != UND_REPLY_NULL);
		ip_unlock(port);
		return reply;
	}
	return UND_REPLY_NULL;
}

/*
 *      User interface for setting the host UserNotification Daemon port.
 */

kern_return_t
host_set_UNDServer(
        host_priv_t     host_priv,
        UNDServerRef    server)
{
	return (host_set_user_notification_port(host_priv, server));
}

/*
 *      User interface for retrieving the UserNotification Daemon port.
 */

kern_return_t
host_get_UNDServer(
	host_priv_t     host_priv,
	UNDServerRef	*serverp)
{
	return (host_get_user_notification_port(host_priv, serverp));
}
