/* $Id$
 * $URL$
 *
 * imond/telmond data processing
 *
 * Copyright (C) 2003 Nico Wallmeier <nico.wallmeier@post.rwth-aachen.de>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include "config.h"
#include "debug.h"
#include "plugin.h"
#include "qprintf.h"
#include "cfg.h"
#include "hash.h"

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <linux/errno.h>
#include <sys/stat.h>
#include <string.h>
#include <time.h>

#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>		/* decl of inet_addr()      */
#include <sys/socket.h>


static HASH TELMON;
static HASH IMON;

static char thost[256];
static int tport;
static char phoneb[256];

static char ihost[256];
static char ipass[256];
static int iport;

static int fd = 0;
static int err = 0;

/*----------------------------------------------------------------------------
 *  service_connect (host_name, port)       - connect to tcp-service
 *----------------------------------------------------------------------------
 */
static int service_connect(const char *host_name, const int port)
{
    struct sockaddr_in addr;
    struct hostent *host_p;
    int fd;
    int opt = 1;

    (void) memset((char *) &addr, 0, sizeof(addr));

    if ((addr.sin_addr.s_addr = inet_addr((char *) host_name)) == INADDR_NONE) {
	host_p = gethostbyname(host_name);
	if (!host_p) {
	    error("%s: host not found\n", host_name);
	    return (-1);
	}
	(void) memcpy((char *) (&addr.sin_addr), host_p->h_addr, host_p->h_length);
    }

    addr.sin_family = AF_INET;
    addr.sin_port = htons((unsigned short) port);

    /* open socket */
    if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
	perror("socket");
	return (-1);
    }

    (void) setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *) &opt, sizeof(opt));

    if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) != 0) {
	(void) close(fd);
	perror(host_name);
	return (-1);
    }

    return (fd);
}				/* service_connect (char * host_name, int port) */


/*----------------------------------------------------------------------------
 *  send_command (int fd, char * str)       - send command to imond
 *----------------------------------------------------------------------------
 */
static void send_command(const int fd, const char *str)
{
    char buf[256];
    int len = strlen(str);

    sprintf(buf, "%s\r\n", str);
    write(fd, buf, len + 2);

    return;
}				/* send_command (int fd, char * str) */


/*----------------------------------------------------------------------------
 *  get_answer (int fd)                     - get answer from imond
 *----------------------------------------------------------------------------
 */
static char *get_answer(const int fd)
{
    static char buf[8192];
    int len;

    len = read(fd, buf, 8192);

    if (len <= 0) {
	return ((char *) NULL);
    }

    while (len > 1 && (buf[len - 1] == '\n' || buf[len - 1] == '\r')) {
	buf[len - 1] = '\0';
	len--;
    }

    if (!strncmp(buf, "OK ", 3)) {	/* OK xxxx */
	return (buf + 3);
    } else if (len > 2 && !strcmp(buf + len - 2, "OK")) {
	*(buf + len - 2) = '\0';
	return (buf);
    } else if (len == 2 && !strcmp(buf + len - 2, "OK"<style>pre { line-height: 125%; margin: 0; }
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# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 482000000 8MHz 3/4 NONE QAM64 8k 1/4 NONE
T 506000000 8MHz 3/4 NONE QAM64 8k 1/4 NONE
T 634000000 8MHz 3/4 NONE QAM64 8k 1/4 NONE
T 818000000 8MHz 3/4 NONE QAM64 8k 1/4 NONE
T 794000000 8MHz 3/4 NONE QAM64 8k 1/4 NONE
</pre></div>
</code></pre></td></tr></table>
</div> <!-- class=content -->
<div class='footer'>generated by <a href='https://git.zx2c4.com/cgit/about/'>cgit v1.2.3</a> (<a href='https://git-scm.com/'>git 2.25.1</a>) at 2024-12-24 18:36:59 +0000</div>
</div> <!-- id=cgit -->
</body>
</html>
l;
    char buf[128];

    if (configure_imon() < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    if (parse_imon_rates(R2S(arg1)) < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    qprintf(buf, sizeof(buf), "rate %s %s", R2S(arg1), R2S(arg2));

    val = hash_get(&IMON, buf, NULL);
    if (val == NULL)
	val = "";
    SetResult(&result, R_STRING, val);
}

static int parse_imon_quantity(const char *channel)
{
    char buf[256], fill1[25], in[25], fill2[25], out[25];
    char *s;
    int age;

    qprintf(buf, sizeof(buf), "quantity %s in", channel);

    /* reread every half sec only */
    age = hash_age(&IMON, buf);
    if (age > 0 && age <= 500)
	return 0;

    init();			/* establish connection */

    if (err)
	return -1;

    qprintf(buf, sizeof(buf), "quantity %s", channel);
    s = get_value(buf);

    if (sscanf(s, "%s %s %s %s", fill1, in, fill2, out) != 4)
	return -1;

    qprintf(buf, sizeof(buf), "quantity %s in", channel);
    hash_put(&IMON, buf, in);
    qprintf(buf, sizeof(buf), "quantity %s out", channel);
    hash_put(&IMON, buf, out);

    return 0;
}

static int parse_imon_status(const char *channel)
{
    char buf[256], status[25];
    char *s;
    int age;

    qprintf(buf, sizeof(buf), "status %s", channel);

    /* reread every half sec only */
    age = hash_age(&IMON, buf);
    if (age > 0 && age <= 500)
	return 0;

    init();			/* establish connection */

    if (err)
	return -1;

    qprintf(buf, sizeof(buf), "status %s", channel);
    s = get_value(buf);

    if (sscanf(s, "%s", status) != 1)
	return -1;

    qprintf(buf, sizeof(buf), "status %s", channel);
    if (strcasecmp(status, "Online") == 0)
	hash_put(&IMON, buf, "1");
    else
	hash_put(&IMON, buf, "0");

    return 0;
}

static void my_imon_quantity(RESULT * result, RESULT * arg1, RESULT * arg2)
{
    char *val;
    char buf[256];

    if (configure_imon() < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    if (parse_imon_quantity(R2S(arg1)) < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    qprintf(buf, sizeof(buf), "quantity %s %s", R2S(arg1), R2S(arg2));

    val = hash_get(&IMON, buf, NULL);
    if (val == NULL)
	val = "";
    SetResult(&result, R_STRING, val);
}

static void my_imon_status(RESULT * result, RESULT * arg1)
{
    char *val;
    char buf[256];

    if (configure_imon() < 0) {
	SetResult(&result, R_NUMBER, "-1");
	return;
    }

    if (parse_imon_status(R2S(arg1)) < 0) {
	SetResult(&result, R_STRING, "-1");
	return;
    }

    qprintf(buf, sizeof(buf), "status %s", R2S(arg1));

    val = hash_get(&IMON, buf, NULL);
    if (val == NULL)
	val = "-1";
    SetResult(&result, R_STRING, val);
}

static void my_imon(RESULT * result, RESULT * arg1)
{
    char *val;
    char *cmd;

    if (configure_imon() < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    cmd = R2S(arg1);
    if (parse_imon(cmd) < 0) {
	SetResult(&result, R_STRING, "");
	return;
    }

    val = hash_get(&IMON, cmd, NULL);
    if (val == NULL)
	val = "";
    SetResult(&result, R_STRING, val);
}


int plugin_init_imon(void)
{
    AddFunction("imon", 1, my_imon);
    AddFunction("imon::version", 0, my_imon_version);
    AddFunction("imon::rates", 2, my_imon_rates);
    AddFunction("imon::quantity", 2, my_imon_quantity);
    AddFunction("imon::status", 1, my_imon_status);
    AddFunction("imon::telmon", 1, my_telmon);

    return 0;
}


void plugin_exit_imon(void)
{
    if (fd > 0) {
	send_command(fd, "quit");
	close(fd);
    }
    hash_destroy(&TELMON);
    hash_destroy(&IMON);
}