#include "global.h"
#include "mqttd.h"


extern char cliCmd[], *cliStr[];


static void *
startSession(sched_task_t *task)
{
	u_char basebuf[USHRT_MAX];
	mqtt_cb_t cbs[MQTT_TYPE_MAX + 1] = { 0 };
	mqtt_msg_t buf = { basebuf, sizeof basebuf };
	mqtthdr_connflgs_t flg;
	mqtthdr_connack_t cack;
	int ret = 0;
	struct timeval tv = { 0 };
	u_short ka;
	struct tagSession *sess = NULL;

	FTRACE(4);

	sess = malloc(sizeof(struct tagSession));
	if (!sess) {
		VERB(3) syslog(LOG_ERR, "Error:: in malloc #%d - %s", errno, strerror(errno));
		goto end;
	}

	if (recv(TASK_FD(task), buf.msg_base, buf.msg_len, 0) == -1) {
		VERB(3) syslog(LOG_ERR, "Error:: recv(%d) #%d - %s", (int) TASK_FD(task), 
				errno, strerror(errno));
		goto end;
	}
	cack = mqtt_readCONNECT(&buf, &ka, sess->sess_cid, sizeof sess->sess_cid, 
			sess->sess_user, sizeof sess->sess_user, sess->sess_pass, sizeof sess->sess_pass, 
			&sess->sess_will.topic, &sess->sess_will.msg);
	if (cack.reserved) {
		VERB(3) syslog(LOG_ERR, "Error:: in MQTT protocol #%d - %s", mqtt_GetErrno(), mqtt_GetError());
		goto end;
	}

	/* check online table for user */

end:	/* close client connection */
	if (sess)
		free(sess);
	close(TASK_FD(task));
	VERB(1) syslog(LOG_DEBUG, "Close client %s with socket=%d", 
			(char*) TASK_ARG(task), (int) TASK_FD(task));
	if (TASK_ARG(task))
		free(TASK_ARG(task));
	return NULL;
}

/* ----------------------------------------------------------------------- */

static void *
thrSched(void *arg __unused)
{
	FTRACE(1);

	schedRun(root, (intptr_t*) &Kill);
	pthread_exit(NULL);
}

int
Run(int sock)
{
	io_sockaddr_t sa;
	socklen_t sslen = sizeof sa.ss;
	int cli;
	char *str = NULL, szAddr[STRSIZ] = { 0 };
	pthread_t tid;

	FTRACE(1);

	if (pthread_create(&tid, NULL, thrSched, NULL)) {
		syslog(LOG_ERR, "Error:: thread scheduler #%d - %s", errno, strerror(errno));
		return -1;
	} else
		pthread_detach(tid);
	VERB(2) syslog(LOG_DEBUG, "Run scheduler management thread");

	if (listen(sock, SOMAXCONN) == -1) {
		syslog(LOG_ERR, "Error:: listen(%d) #%d - %s\n", sock, errno, strerror(errno));
		pthread_cancel(tid);
		return -1;
	}

	while (!Kill) {
		if ((cli = accept(sock, &sa.sa, &sslen)) == -1) {
			syslog(LOG_ERR, "Error:: accept() #%d - %s", errno, strerror(errno));
			continue;
		} else
			VERB(1) {
				switch (sa.sa.sa_family) {
					case AF_INET:
						inet_ntop(AF_INET, &sa.sin.sin_addr, szAddr, sslen);
						snprintf(szAddr, sizeof szAddr, "%s:%d", 
								szAddr, ntohs(sa.sin.sin_port));
						break;
					case AF_INET6:
						inet_ntop(AF_INET6, &sa.sin6.sin6_addr, szAddr, sslen);
						snprintf(szAddr, sizeof szAddr, "%s:%d", 
								szAddr, ntohs(sa.sin6.sin6_port));
						break;
					case AF_LOCAL:
						strlcpy(szAddr, sa.sun.sun_path, sizeof szAddr);
						break;
					default:
						close(cli);
						syslog(LOG_ERR, "Error:: unsupported address type %d", 
								sa.sa.sa_family);
						continue;
				}
				str = strdup(szAddr);
				syslog(LOG_DEBUG, "Connected client with socket=%d from %s", cli, str);
			}

		if (!schedRead(root, startSession, str, cli)) {
			close(cli);
			VERB(1) syslog(LOG_DEBUG, "Terminated client with socket=%d", cli);
			if (str)
				free(str);
		}
	}

	return 0;
}