/*
 * In this module we implement user-driven sending of CANCEL and BYE
 * disconnection requests.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "../libsip/out_msg.h"

extern struct sockaddr_in sip_dest_sin;
extern char to_uri[];

send_cancel_req()
{
	struct sip_msg_out msg;
	int rc;

	rc = start_request_out_msg(&msg, "CANCEL", to_uri);
	if (rc < 0) {
msg_size_err:	fprintf(stderr, "composing CANCEL message: size error\n");
		return(-1);
	}
	rc = add_req_boilerplate(&msg, "1 CANCEL", 0);
	if (rc < 0)
		goto msg_size_err;
	out_msg_finish(&msg);
	sip_tx_packet(&msg, &sip_dest_sin);
	return(0);
}

send_bye_req()
{
	struct sip_msg_out msg;
	int rc;

	rc = start_request_out_msg(&msg, "BYE", to_uri);
	if (rc < 0) {
msg_size_err:	fprintf(stderr, "composing BYE message: size error\n");
		return(-1);
	}
	rc = add_req_boilerplate(&msg, "2 BYE", 1);
	if (rc < 0)
		goto msg_size_err;
	out_msg_finish(&msg);
	sip_tx_packet(&msg, &sip_dest_sin);
	return(0);
}

void
select_stdin()
{
	char buf[256], *cp;

	fgets(buf, sizeof buf, stdin);
	cp = index(buf, '\n');
	if (cp) {
		while (cp > buf && isspace(cp[-1]))
			cp--;
		*cp = '\0';
	}
	for (cp = buf; isspace(*cp); cp++)
		;
	if (!*cp)
		return;
	if (!strcmp(cp, "b") || !strcasecmp(cp, "bye"))
		send_bye_req();
	else if (!strcmp(cp, "c") || !strcasecmp(cp, "cancel"))
		send_cancel_req();
	else
		fprintf(stderr, "error: non-understood stdin command\n");
}