/*********************************************************/

/*  toksvc: a framework-native token broker service      */

/*  Copyright (C) 2020  Z. Gilboa                        */

/*  Released under GPLv2 and GPLv3; see COPYING.TOKSVC.  */

/*********************************************************/

#include <psxtypes/psxtypes.h>

#include <ntapi/ntapi.h>

#include <toksvc/toksvc.h>

#include "toksvc_driver_impl.h"

#include "toksvc_daemon_impl.h"

static int32_t toks_client_cancel(void * hport)

{

	int32_t			status;

	struct _nt_tty_sync_msg	msg;

	ntapi->tt_aligned_block_memset(

		&msg,0,sizeof(msg));

	msg.header.msg_type	= NT_LPC_NEW_MESSAGE;

	msg.header.data_size	= sizeof(msg.data);

	msg.header.msg_size	= sizeof(msg);

	msg.data.ttyinfo.opcode	= TOKS_DAEMON_CANCEL;

	if ((status = ntapi->zw_request_wait_reply_port(hport,&msg,&msg)))

		return status;

	return msg.data.ttyinfo.status;

}

int32_t toks_client_acquire(struct toks_driver_ctx * dctx)

{

	int32_t			status;

	void *			hport;

	struct _nt_tty_sync_msg	msg;

	struct _nt_port_keys *	keys;

	int64_t			millisecs;

	nt_timeout		timeout;

	nt_ebi			syncebi;

	const char *		refstr;

	size_t			reflen;

	void *			hduo[2];

	hport  = toks_get_driver_hservice(dctx);

	keys   = toks_get_driver_keys(dctx);

	refstr = toks_get_driver_refstr(dctx);

	reflen = 0;

	ntapi->tt_aligned_block_memset(

		&msg,0,sizeof(msg));

	msg.header.msg_type	  = NT_LPC_NEW_MESSAGE;

	msg.header.data_size	  = sizeof(msg.data);

	msg.header.msg_size	  = sizeof(msg);

	msg.data.ttyinfo.opcode	  = TOKS_DAEMON_ACQUIRE;

	msg.data.syncinfo.hevent  = toks_get_driver_hevent(dctx);

	if (toks_get_driver_tokpid(dctx)) {

		msg.data.syncinfo.ipcsvc.keys.reserved = toks_get_driver_tokpid(dctx);

		msg.data.syncinfo.ipcsvc.options       = TOKS_OPT_FRAMEWORK_PID;

	} else {

		msg.data.syncinfo.ipcsvc.keys.reserved = toks_get_driver_tsyspid(dctx);

	}

	if (refstr && (reflen = toks_strlen(refstr))) {

		if (reflen > sizeof(msg.data.syncinfo.ipcsvc.keys.key))

			reflen = sizeof(msg.data.syncinfo.ipcsvc.keys.key);

		ntapi->tt_generic_memcpy(

			msg.data.syncinfo.ipcsvc.keys.key,

			refstr,reflen);

	}

	if (!(millisecs = toks_get_driver_timeout(dctx))) {

		msg.data.syncinfo.hevent = 0;

	} else if (millisecs == (-1)) {

		timeout.ulow  = ~(0u);

		timeout.ihigh = ~(0x80000000);

	} else {

		timeout.quad = (-1) * 10 * 1000 * millisecs;

	}

	if ((status = ntapi->zw_request_wait_reply_port(hport,&msg,&msg)))

		return status;

	switch (msg.data.ttyinfo.status) {

		case NT_STATUS_SUCCESS:

			break;

		case NT_STATUS_PENDING:

			hduo[0] = msg.data.syncinfo.hevent;

			hduo[1] = toks_get_driver_hserver(dctx);

			ntapi->zw_wait_for_multiple_objects(

				2,hduo,

				NT_WAIT_ANY,

				NT_SYNC_NON_ALERTABLE,

				&timeout);

			status = ntapi->zw_query_event(

				msg.data.syncinfo.hevent,

				NT_EVENT_BASIC_INFORMATION,

				&syncebi,sizeof(syncebi),

				&(size_t){0});

			if ((status == NT_STATUS_SUCCESS) && !syncebi.signal_state) {

				return NT_STATUS_SYSTEM_PROCESS_TERMINATED;

			} else if (status == NT_STATUS_SUCCESS) {

				(void)0;

			} else {

				switch (toks_client_cancel(hport)) {

					case NT_STATUS_NOT_FOUND:

						break;

					default:

						return status;

				}

			}

			break;

		default:

			return msg.data.ttyinfo.status;

	}

	keys->key[0] = msg.data.syncinfo.ipckeys[0];

	keys->key[1] = msg.data.syncinfo.ipckeys[1];

	keys->key[2] = msg.data.syncinfo.ipckeys[2];

	keys->key[3] = msg.data.syncinfo.ipckeys[3];

	keys->key[4] = msg.data.syncinfo.ipckeys[4];

	keys->key[5] = msg.data.syncinfo.ipckeys[5];

	return NT_STATUS_SUCCESS;

}