/* $Id: plugin.c,v 1.37 2005/05/02 10:29:20 reinelt Exp $ * * plugin handler for the Evaluator * * Copyright (C) 2003 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * 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. * * * $Log: plugin.c,v $ * Revision 1.37 2005/05/02 10:29:20 reinelt * preparations for python bindings and python plugin * * Revision 1.36 2005/04/03 07:07:51 reinelt * added statfs plugin * * Revision 1.35 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * * Revision 1.34 2004/06/26 12:04:59 reinelt * * uh-oh... the last CVS log message messed up things a lot... * * Revision 1.33 2004/06/26 09:27:21 reinelt * * added '-W' to CFLAGS * changed all C++ comments to C ones * cleaned up a lot of signed/unsigned mistakes * * Revision 1.32 2004/06/07 06:56:55 reinelt * * added test plugin from Andy Baxter * * Revision 1.31 2004/05/29 00:27:23 reinelt * * added plugin_diskstats.c * * Revision 1.30 2004/05/22 18:30:02 reinelt * * added plugin 'uptime' * * Revision 1.29 2004/05/20 07:47:51 reinelt * added plugin_time * * Revision 1.28 2004/04/12 11:12:26 reinelt * added plugin_isdn, removed old ISDN client * fixed some real bad bugs in the evaluator * * Revision 1.27 2004/04/09 06:09:55 reinelt * big configure rework from Xavier * * Revision 1.25 2004/04/07 08:29:05 hejl * New plugin for wireless info * * Revision 1.24 2004/03/19 06:37:47 reinelt * asynchronous thread handling started * * Revision 1.23 2004/03/14 07:11:42 reinelt * parameter count fixed for plugin_dvb() * plugin_APM (battery status) ported * * Revision 1.22 2004/03/13 06:49:20 reinelt * seti@home plugin ported to NextGeneration * * Revision 1.21 2004/03/10 07:16:15 reinelt * MySQL plugin from Javier added * * Revision 1.20 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save CPU cycles on gettimeofday() * - add quit() functions to free allocated memory * - fixed lots of memory leaks * * Revision 1.19 2004/02/18 14:45:42 nicowallmeier * Imon/Telmon plugin ported * * Revision 1.18 2004/02/10 07:42:35 reinelt * cut off all old-style files which are no longer used with NextGeneration * * Revision 1.17 2004/02/10 06:54:39 reinelt * DVB plugin ported * * Revision 1.16 2004/01/29 04:40:02 reinelt * every .c file includes "config.h" now * * Revision 1.15 2004/01/27 08:13:39 reinelt * ported PPP token to plugin_ppp * * Revision 1.14 2004/01/25 05:30:09 reinelt * plugin_netdev for parsing /proc/net/dev added * * Revision 1.13 2004/01/16 05:04:53 reinelt * started plugin proc_stat which should parse /proc/stat * which again is a paint in the a** * thinking over implementation methods of delta functions * (CPU load, ...) * * Revision 1.12 2004/01/15 04:29:45 reinelt * moved lcd4linux.conf.sample to *.old * lcd4linux.conf.sample with new layout * new plugins 'loadavg' and 'meminfo' * text widget have pre- and postfix * * Revision 1.11 2004/01/14 11:33:00 reinelt * new plugin 'uname' which does what it's called * text widget nearly finished * first results displayed on MatrixOrbital * * Revision 1.10 2004/01/13 10:03:01 reinelt * new util 'hash' for associative arrays * new plugin 'cpuinfo' * * Revision 1.9 2004/01/11 18:26:02 reinelt * further widget and layout processing * * Revision 1.8 2004/01/10 20:22:33 reinelt * added new function 'cfg_list()' (not finished yet) * added layout.c (will replace processor.c someday) * added widget_text.c (will be the first and most important widget) * modified lcd4linux.c so that old-style configs should work, too * * Revision 1.7 2004/01/10 17:45:26 reinelt * changed initialization order so cfg() gets initialized before plugins. * This way a plugin's init() can use cfg_get(). * Thanks to Xavier for reporting this one! * * Revision 1.6 2004/01/10 17:36:56 reinelt * * I2C Sensors plugin from Xavier added * * Revision 1.5 2004/01/06 17:33:45 reinelt * * Evaluator: functions with variable argument lists * Evaluator: plugin_sample.c and README.Plugins added * * Revision 1.4 2004/01/06 15:19:16 reinelt * Evaluator rearrangements... * * Revision 1.3 2003/12/19 06:27:33 reinelt * added XMMS plugin from Markus Keil * * Revision 1.2 2003/12/19 05:49:23 reinelt * extracted plugin_math and plugin_string into extra files * * Revision 1.1 2003/12/19 05:35:14 reinelt * renamed 'client' to 'plugin' * * Revision 1.1 2003/10/11 06:01:52 reinelt * * renamed expression.{c,h} to client.{c,h} * added config file client * new functions 'AddNumericVariable()' and 'AddStringVariable()' * new parameter '-i' for interactive mode * * Revision 1.3 2003/10/06 05:51:15 reinelt * functions: min(), max() * * Revision 1.2 2003/10/06 05:47:27 reinelt * operators: ==, \!=, <=, >= * * Revision 1.1 2003/10/06 04:34:06 reinelt * expression evaluator added * */ /* * exported functions: * * int plugin_init (void) * initializes the expression evaluator * adds some handy constants and functions * */ #include "config.h" #include #include #include #include "debug.h" #include "plugin.h" /* Prototypes */ int plugin_init_cfg (void); void plugin_exit_cfg (void); int plugin_init_math (void); void plugin_exit_math (void); int plugin_init_string (void); void plugin_exit_string (void); int plugin_init_test (void); void plugin_exit_test (void); int plugin_init_time (void); void plugin_exit_time (void); int plugin_init_apm (void); void plugin_exit_apm (void); int plugin_init_cpuinfo (void); void plugin_exit_cpuinfo (void); int plugin_init_diskstats (void); void plugin_exit_diskstats (void); int plugin_init_dvb (void); void plugin_exit_dvb (void); int plugin_init_exec (void); void plugin_exit_exec (void); int plugin_init_i2c_sensors (void); void plugin_exit_i2c_sensors (void); int plugin_init_imon(void); void plugin_exit_imon(void); int plugin_init_isdn(void); void plugin_exit_isdn(void); int plugin_init_loadavg (void); void plugin_exit_loadavg (void); int plugin_init_meminfo (void); void plugin_exit_meminfo (void); int plugin_init_mysql(void); void plugin_exit_mysql(void); int plugin_init_netdev (void); void plugin_exit_netdev (void); int plugin_init_pop3 (void); void plugin_exit_pop3 (void); int plugin_init_ppp (void); void plugin_exit_ppp (void); int plugin_init_proc_stat (void); void plugin_exit_proc_stat (void); int plugin_init_python (void); void plugin_exit_python (void); int plugin_init_seti(void); void plugin_exit_seti(void); int plugin_init_statfs(void); void plugin_exit_statfs(void); int plugin_init_uname (void); void plugin_exit_uname (void); int plugin_init_uptime (void); void plugin_exit_uptime (void); int plugin_init_wireless(void); void plugin_exit_wireless(void); int plugin_init_xmms (void); void plugin_exit_xmms (void); int plugin_init (void) { plugin_init_cfg(); plugin_init_math(); plugin_init_string(); plugin_init_test(); plugin_init_time(); #ifdef PLUGIN_APM plugin_init_apm(); #endif #ifdef PLUGIN_CPUINFO plugin_init_cpuinfo(); #endif #ifdef PLUGIN_DISKSTATS plugin_init_diskstats(); #endif #ifdef PLUGIN_DVB plugin_init_dvb(); #endif #ifdef PLUGIN_EXEC plugin_init_exec(); #endif #ifdef PLUGIN_I2C_SENSORS plugin_init_i2c_sensors(); #endif #ifdef PLUGIN_IMON plugin_init_imon(); #endif #ifdef PLUGIN_ISDN plugin_init_isdn(); #endif #ifdef PLUGIN_LOADAVG plugin_init_loadavg(); #endif #ifdef PLUGIN_MEMINFO plugin_init_meminfo(); #endif #ifdef PLUGIN_MYSQL plugin_init_mysql(); #endif #ifdef PLUGIN_NETDEV plugin_init_netdev(); #endif #ifdef PLUGIN_POP3 plugin_init_pop3(); #endif #ifdef PLUGIN_PPP plugin_init_ppp(); #endif #ifdef PLUGIN_PROC_STAT plugin_init_proc_stat(); #endif #ifdef PLUGIN_PYTHON plugin_init_python(); #endif #ifdef PLUGIN_SETI plugin_init_seti(); #endif #ifdef PLUGIN_STATFS plugin_init_statfs(); #endif #ifdef PLUGIN_UNAME plugin_init_uname(); #endif #ifdef PLUGIN_UPTIME plugin_init_uptime(); #endif #ifdef PLUGIN_WIRELESS plugin_init_wireless(); #endif #ifdef PLUGIN_XMMS plugin_init_xmms(); #endif return 0; } void plugin_exit(void) { #ifdef PLUGIN_APM plugin_exit_apm(); #endif #ifdef PLUGIN_CPUINFO plugin_exit_cpuinfo(); #endif #ifdef PLUGIN_DISKSTATS plugin_exit_diskstats(); #endif #ifdef PLUGIN_DVB plugin_exit_dvb(); #endif #ifdef PLUGIN_EXEC plugin_exit_exec(); #endif #ifdef PLUGIN_I2C_SENSORS plugin_exit_i2c_sensors(); #endif #ifdef PLUGIN_IMON plugin_exit_imon(); #endif #ifdef PLUGIN_ISDN plugin_exit_isdn(); #endif #ifdef PLUGIN_LOADAVG plugin_exit_loadavg(); #endif #ifdef PLUGIN_MEMINFO plugin_exit_meminfo(); #endif #ifdef PLUGIN_MYSQL plugin_exit_mysql(); #endif #ifdef PLUGIN_NETDEV plugin_exit_netdev(); #endif #ifdef PLUGIN_POP3 plugin_exit_pop3(); #endif #ifdef PLUGIN_PPP plugin_exit_ppp(); #endif #ifdef PLUGIN_PROC_STAT plugin_exit_proc_stat(); #endif #ifdef PLUGIN_PYTHON plugin_exit_python(); #endif #ifdef PLUGIN_SETI plugin_exit_seti(); #endif #ifdef PLUGIN_STATFS plugin_exit_statfs(); #endif #ifdef PLUGIN_UNAME plugin_exit_uname(); #endif #ifdef PLUGIN_UPTIME plugin_exit_uptime(); #endif #ifdef PLUGIN_WIRELESS plugin_exit_wireless(); #endif #ifdef PLUGIN_XMMS plugin_exit_xmms(); #endif plugin_exit_cfg(); plugin_exit_math(); plugin_exit_string(); plugin_exit_test(); plugin_exit_time(); DeleteFunctions(); DeleteVariables(); } f='#n234'>234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 
/* $Id: plugin_netdev.c,v 1.14 2005/05/08 04:32:44 reinelt Exp $
 *
 * plugin for /proc/net/dev parsing
 *
 * Copyright (C) 2003 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * 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.
 *
 *
 * $Log: plugin_netdev.c,v $
 * Revision 1.14  2005/05/08 04:32:44  reinelt
 * CodingStyle added and applied
 *
 * Revision 1.13  2005/01/18 06:30:23  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.12  2004/06/26 12:05:00  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.11  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.10  2004/06/17 10:58:58  reinelt
 *
 * changed plugin_netdev to use the new fast hash model
 *
 * Revision 1.9  2004/06/17 06:23:43  reinelt
 *
 * hash handling rewritten to solve performance issues
 *
 * Revision 1.8  2004/05/27 03:39:47  reinelt
 *
 * changed function naming scheme to plugin::function
 *
 * Revision 1.7  2004/03/11 06:39:59  reinelt
 * big patch from Martin:
 * - reuse filehandles
 * - memory leaks fixed
 * - earlier busy-flag checking with HD44780
 * - reuse memory for strings in RESULT and hash
 * - netdev_fast to wavid time-consuming regex
 *
 * Revision 1.6  2004/03/03 04:44:16  reinelt
 * changes (cosmetics?) to the big patch from Martin
 * hash patch un-applied
 *
 * Revision 1.5  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.4  2004/02/15 07:23:04  reinelt
 * bug in netdev parsing fixed
 *
 * Revision 1.3  2004/02/01 19:37:40  reinelt
 * got rid of every strtok() incarnation.
 *
 * Revision 1.2  2004/01/29 04:40:02  reinelt
 * every .c file includes "config.h" now
 *
 * Revision 1.1  2004/01/25 05:30:09  reinelt
 * plugin_netdev for parsing /proc/net/dev added
 *
 */

/* 
 * exported functions:
 *
 * int plugin_init_netdev (void)
 *  adds functions to access /proc/net/dev
 *
 */


#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

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


static HASH NetDev;
static FILE *Stream = NULL;
static char *DELIMITER = " :|\t\n";

static int parse_netdev(void)
{
    int age;
    int row, col;
    static int first_time = 1;

    /* reread every 10 msec only */
    age = hash_age(&NetDev, NULL);
    if (age > 0 && age <= 10)
	return 0;

    if (Stream == NULL)
	Stream = fopen("/proc/net/dev", "r");
    if (Stream == NULL) {
	error("fopen(/proc/net/dev) failed: %s", strerror(errno));
	return -1;
    }

    rewind(Stream);
    row = 0;

    while (!feof(Stream)) {
	char buffer[256];
	char dev[16];
	char *beg, *end;
	unsigned int len;

	if (fgets(buffer, sizeof(buffer), Stream) == NULL)
	    break;

	switch (++row) {

	case 1:
	    /* skip row 1 */
	    continue;

	case 2:
	    /* row 2 used for headers */
	    if (first_time) {
		char *RxTx = strrchr(buffer, '|');
		first_time = 0;
		col = 0;
		beg = buffer;
		while (beg) {
		    char key[32];

		    while (strchr(DELIMITER, *beg))
			beg++;
		    if ((end = strpbrk(beg, DELIMITER)) != NULL)
			*end = '\0';
		    qprintf(key, sizeof(key), "%s_%s", beg < RxTx ? "Rx" : "Tx", beg);
		    hash_set_column(&NetDev, col++, key);
		    beg = end ? end + 1 : NULL;
		}
	    }
	    continue;

	default:
	    /* fetch interface name (1st column) as key */
	    beg = buffer;
	    while (*beg && *beg == ' ')
		beg++;
	    end = beg + 1;
	    while (*end && *end != ':')
		end++;
	    len = end - beg;
	    if (len >= sizeof(dev))
		len = sizeof(dev) - 1;
	    strncpy(dev, beg, len);
	    dev[len] = '\0';

	    hash_put_delta(&NetDev, dev, buffer);
	}
    }

    return 0;
}

static void my_netdev(RESULT * result, RESULT * arg1, RESULT * arg2, RESULT * arg3)
{
    char *dev, *key;
    int delay;
    double value;

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

    dev = R2S(arg1);
    key = R2S(arg2);
    delay = R2N(arg3);

    value = hash_get_regex(&NetDev, dev, key, delay);

    SetResult(&result, R_NUMBER, &value);
}

static void my_netdev_fast(RESULT * result, RESULT * arg1, RESULT * arg2, RESULT * arg3)
{
    char *dev, *key;
    int delay;
    double value;

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

    dev = R2S(arg1);
    key = R2S(arg2);
    delay = R2N(arg3);

    value = hash_get_delta(&NetDev, dev, key, delay);

    SetResult(&result, R_NUMBER, &value);
}


int plugin_init_netdev(void)
{
    hash_create(&NetDev);
    hash_set_delimiter(&NetDev, " :|\t\n");

    AddFunction("netdev", 3, my_netdev);
    AddFunction("netdev::fast", 3, my_netdev_fast);
    return 0;
}

void plugin_exit_netdev(void)
{
    if (Stream != NULL) {
	fclose(Stream);
	Stream = NULL;
    }
    hash_destroy(&NetDev);
}
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