--- /dev/null
+/* $Id: plugin_wireless.c,v 1.1 2004/04/07 08:29:05 hejl Exp $
+ *
+ * Wireless Extension plugin
+ *
+ * Copyright 2004 Xavier Vello <xavier66@free.fr>
+ * Copyright 2004 Martin Hejl <martin@hejl.de>
+ * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * Losts of code borrowed from Wireless Tools, which is
+ * Copyright (c) 1997-2002 Jean Tourrilhes <jt@hpl.hp.com>
+ * (avaible at http://web.hpl.hp.com/personal/Jean_Tourrilhes/Linux/)
+ *
+ * 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_wireless.c,v $
+ * Revision 1.1 2004/04/07 08:29:05 hejl
+ * New plugin for wireless info
+ *
+ */
+
+ /*
+ * Exported functions:
+
+ wifi_level
+ wifi_noise
+ wifi_quality
+ wifi_protocol
+ wifi_frequency
+ wifi_bitrate
+ wifi_essid
+ wifi_op_mode
+ wifi_sensitivity
+ wifi_sec_mode
+
+ All Functions take one parameter
+ (the name of the device, like "wlan0", "ath0" and so on)
+
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <net/if_arp.h>
+#include <linux/wireless.h>
+#include <math.h>
+
+#include "debug.h"
+#include "plugin.h"
+#include "cfg.h"
+#include "hash.h"
+#include "qprintf.h"
+
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif
+
+#define HASH_TTL 100
+
+//#define KILO 1e3
+//#define MEGA 1e6
+//#define GIGA 1e9
+
+
+#define KEY_LEVEL "level"
+#define KEY_QUALITY "quality"
+#define KEY_NOISE "noise"
+#define KEY_PROTO "proto"
+#define KEY_FREQUENCY "frequency"
+#define KEY_BIT_RATE "bit_rate"
+#define KEY_ESSID "essid"
+#define KEY_OP_MODE "op_mode"
+#define KEY_SENS "sens"
+#define KEY_SEC_MODE "sec_mode"
+
+#define FREQ2FLOAT(m,e) (((double) m) * pow(10,e))
+#define MWATT2DBM(in) ((int) (ceil(10.0 * log10((double) in))))
+
+
+static HASH wireless = { 0, };
+static int sock=-2;
+
+static char *operation_mode[] = {
+ "Auto",
+ "Ad-Hoc",
+ "Managed",
+ "Master",
+ "Repeater",
+ "Secondary",
+ "Monitor",
+ "n/a"
+ };
+
+
+static void ioctl_error(int line) {
+ error("IOCTL call to wireless extensions in line %d returned error", line);
+}
+
+int do_ioctl(int sock, /* Socket to the kernel */
+ char * ifname, /* Device name */
+ int request, /* WE ID */
+ struct iwreq * pwrq) /* Fixed part of the request */
+{
+ /* Set device name */
+ strncpy(pwrq->ifr_name, ifname, IFNAMSIZ);
+
+ /* Do the request */
+ return(ioctl(sock, request, pwrq));
+}
+
+int get_range_info( int sock,
+ char * ifname,
+ struct iw_range *range)
+{
+ struct iwreq req;
+ char buffer[sizeof(struct iw_range) * 2]; /* Large enough */
+
+ if (sock<=0) {
+ return(-1);
+ }
+
+ /* Cleanup */
+ memset(buffer, 0, sizeof(buffer));
+
+ req.u.data.pointer = (caddr_t) buffer;
+ req.u.data.length = sizeof(buffer);
+ req.u.data.flags = 0;
+ if(do_ioctl(sock, ifname, SIOCGIWRANGE, &req) < 0)
+ return(-1);
+
+ /* Copy stuff at the right place, ignore extra */
+ memcpy((char *) range, buffer, sizeof(struct iw_range));
+
+ return(0);
+}
+
+
+
+static int get_ifname(struct iwreq *preq, char *dev) {
+ /* do not cache this call !!! */
+ struct iwreq req;
+ char key_buffer[32];
+
+ if (sock<=0) {
+ return(-1);
+ }
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,KEY_PROTO);
+
+ if (!preq) preq=&req;
+
+ if(do_ioctl(sock, dev, SIOCGIWNAME, preq)) {
+ debug("%s isn't a wirelesss interface !", dev);
+ return -1;
+ }
+
+ hash_set(&wireless,key_buffer, preq->u.name);
+ return(0);
+
+}
+
+static int get_frequency(char* dev,char* key) {
+ /* Get frequency / channel */
+ struct iwreq req;
+ char qprintf_buffer[1024];
+ char key_buffer[32];
+ double freq;
+ int age;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ req.u.data.length = 0;
+ req.u.data.flags = 1; /* Clear updated flag */
+
+ if(do_ioctl(sock, dev, SIOCGIWFREQ, &req) < 0) {
+ ioctl_error(__LINE__);
+ return -1;
+ }
+
+ freq = FREQ2FLOAT(req.u.freq.m, req.u.freq.e);
+
+ /*if( freq>= GIGA)
+ snprintf(qprintf_buffer,sizeof(qprintf_buffer), "%g GHz", freq / GIGA);
+ else
+ if(freq>= MEGA)
+ snprintf(qprintf_buffer,sizeof(qprintf_buffer), "%g MHz", freq / MEGA);
+ else
+ snprintf(qprintf_buffer,sizeof(qprintf_buffer), "%g kHz", freq / KILO);
+*/
+ snprintf(qprintf_buffer,sizeof(qprintf_buffer), "%g", freq);
+
+ hash_set(&wireless, key_buffer, qprintf_buffer);
+ return(0);
+
+}
+
+static int get_essid(char* dev,char* key) {
+ /* Get ESSID */
+ struct iwreq req;
+ char key_buffer[32];
+ char essid_buffer[IW_ESSID_MAX_SIZE+1];
+ int age;
+
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ memset(essid_buffer, 0, sizeof(essid_buffer));
+ req.u.essid.pointer = (caddr_t) essid_buffer;
+ req.u.essid.length = IW_ESSID_MAX_SIZE + 1;
+ req.u.essid.flags = 0;
+
+ if(do_ioctl(sock, dev,SIOCGIWESSID, &req) < 0) {
+ ioctl_error(__LINE__);
+ return -1;
+ }
+
+ hash_set(&wireless,key_buffer, essid_buffer);
+ return(0);
+
+}
+
+static int get_op_mode(char* dev,char* key) {
+ /* Get operation mode */
+ struct iwreq req;
+ char key_buffer[32];
+ int age;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ if(do_ioctl(sock, dev,SIOCGIWMODE, &req) < 0) {
+ ioctl_error(__LINE__);
+ return -1;
+ }
+
+ if((req.u.mode > 6) || (req.u.mode < 0)) {
+ req.u.mode=7; /* mode not available */
+ }
+
+ hash_set(&wireless,key_buffer, operation_mode[req.u.mode]);
+ return(0);
+
+}
+
+static int get_bitrate(char* dev,char* key) {
+ /* Get bit rate */
+ struct iwreq req;
+ char key_buffer[32];
+ char bitrate_buffer[64];
+ int age;
+ double bitrate=0;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ if(do_ioctl(sock, dev,SIOCGIWRATE, &req) < 0) {
+ ioctl_error(__LINE__);
+ return -1;
+ }
+
+ bitrate_buffer[0]='\0';
+ bitrate = (double)(req.u.bitrate.value);
+/* if( bitrate>= GIGA)
+ snprintf(bitrate_buffer,sizeof(bitrate_buffer), "%gGb/s", bitrate / GIGA);
+ else
+ if(bitrate >= MEGA)
+ snprintf(bitrate_buffer,sizeof(bitrate_buffer), "%gMb/s", bitrate / MEGA);
+ else
+ snprintf(bitrate_buffer,sizeof(bitrate_buffer), "%gkb/s", bitrate / KILO);
+*/
+ snprintf(bitrate_buffer,sizeof(bitrate_buffer), "%g", bitrate);
+
+ hash_set(&wireless,key_buffer, bitrate_buffer);
+
+ return(0);
+}
+
+static int get_sens(char* dev,char* key) {
+ /* Get sensitivity */
+ struct iwreq req;
+ struct iw_range range;
+ char key_buffer[32];
+ char buffer[64];
+ int age;
+ int has_sens =0;
+ int has_range =0;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ if(do_ioctl(sock, dev, SIOCGIWSENS, &req) >= 0)
+ {
+ has_sens = 1;
+ }
+
+ if(get_range_info(sock, dev, &range) < 0) {
+ memset(&range, 0, sizeof(range));
+ } else {
+ has_range=1;
+ }
+
+ if(has_range) {
+ if(req.u.sens.value < 0) {
+ qprintf(buffer, sizeof(buffer), "%d dBm", req.u.sens.value);
+ }
+ else
+ {
+ qprintf(buffer, sizeof(buffer), "%d/%d", req.u.sens.value, range.sensitivity);
+ }
+ } else {
+ qprintf(buffer, sizeof(buffer), "%d", req.u.sens.value);
+ }
+
+ hash_set(&wireless,key_buffer, buffer);
+ return(0);
+}
+
+
+static int get_sec_mode(char* dev,char* key) {
+ // Get encryption information
+ struct iwreq req;
+ char key_buffer[32];
+ char encrypt_key[IW_ENCODING_TOKEN_MAX+1];
+ int age;
+ int has_key=0;
+ int key_flags=0;
+ int key_size=0;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ req.u.data.pointer = (caddr_t) &encrypt_key;
+ req.u.data.length = IW_ENCODING_TOKEN_MAX;
+ req.u.data.flags = 0;
+
+ if(do_ioctl(sock, dev, SIOCGIWENCODE, &req) >= 0)
+ {
+ has_key = 1;
+ key_flags = req.u.data.flags;
+ key_size = req.u.data.length;
+ } else {
+ return(-1);
+ }
+
+ // Display encryption information
+ //if(has_key && (key_flags & IW_ENCODE_INDEX) > 1)
+ // printf(" [%d]", info->key_flags & IW_ENCODE_INDEX);
+
+ if(has_key && (key_flags & IW_ENCODE_RESTRICTED))
+ hash_set(&wireless,key_buffer, "restricted");
+ else if(has_key && (key_flags & IW_ENCODE_OPEN))
+ hash_set(&wireless,key_buffer, "open");
+
+ return(0);
+}
+
+static int get_stats(char *dev, char *key)
+{
+ struct iw_statistics stats;
+ struct iwreq req;
+ char qprintf_buffer[1024];
+ char key_buffer[32];
+ int age;
+ struct iw_range range;
+
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev,key);
+ age=hash_age(&wireless, key, NULL);
+
+ /* reread every HASH_TTL msec only */
+ if (age>0 && age<=HASH_TTL) {
+ return(0);
+ }
+
+ if (get_ifname(&req,dev)!=0) {
+ return(-1);
+ }
+
+ req.u.data.pointer = (caddr_t) &stats;
+ req.u.data.length = 0;
+ req.u.data.flags = 1; /* Clear updated flag */
+
+ if(do_ioctl(sock, dev,SIOCGIWSTATS, &req) < 0) {
+ ioctl_error(__LINE__);
+ return -1;
+ }
+
+ if(get_range_info(sock, dev, &range) < 0)
+ memset(&range, 0, sizeof(range));
+
+ if(stats.qual.level > range.max_qual.level) {
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d", stats.qual.level-0x100);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_LEVEL);
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d", stats.qual.noise-0x100);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_NOISE);
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.qual,range.max_qual.qual);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_QUALITY);
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+ } else {
+
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.level, range.max_qual.level);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_LEVEL);;
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.noise,range.max_qual.noise);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_NOISE);
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+
+ qprintf(qprintf_buffer, sizeof(qprintf_buffer), "%d/%d", stats.qual.qual, range.max_qual.qual);
+ qprintf(key_buffer,sizeof(key_buffer), "%s.%s", dev, KEY_QUALITY);
+ hash_set(&wireless,key_buffer, qprintf_buffer);
+ }
+
+ return 0;
+}
+
+static int check_socket() {
+
+ // already handled in a previous run
+ if (sock==-3) return(-1);
+
+ // socket not initialized
+ if (sock==-2) sock = socket(AF_INET, SOCK_DGRAM, 0);
+
+ // error initilalizing socket
+ if (sock<=0) {
+ error("Error opening socket for reading wireless stats");
+ sock=-3;
+ return(-1);
+ }
+
+ return(0);
+
+}
+
+static void save_result(RESULT *result, char* dev, char* key, int res) {
+ char key_buffer[64];
+ qprintf(key_buffer, sizeof(key_buffer), "%s.%s", dev,key);
+ char* val=NULL;
+
+ if (res<0) {
+ SetResult(&result, R_STRING, "");
+ return;
+ }
+
+ val=hash_get(&wireless,key_buffer);
+
+ if (val) {
+ SetResult(&result, R_STRING, val);
+ } else {
+ SetResult(&result, R_STRING, "");
+ }
+
+
+}
+
+/*
+ functions exported to the evaluator
+*/
+
+static void wireless_quality(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_QUALITY,get_stats(dev, KEY_QUALITY));
+}
+
+static void wireless_level(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_LEVEL,get_stats(dev, KEY_LEVEL));
+}
+
+
+static void wireless_noise(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_NOISE,get_stats(dev, KEY_NOISE));
+}
+
+
+static void wireless_protocol(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_PROTO,get_ifname(NULL, dev));
+}
+
+static void wireless_frequency(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_FREQUENCY,get_frequency(dev, KEY_FREQUENCY));
+}
+
+static void wireless_bitrate(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_BIT_RATE,get_bitrate(dev, KEY_BIT_RATE));
+}
+
+static void wireless_essid(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_ESSID,get_essid(dev, KEY_ESSID));
+}
+
+static void wireless_op_mode(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_OP_MODE,get_op_mode(dev, KEY_OP_MODE));
+}
+
+static void wireless_sensitivity(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_SENS,get_sens(dev, KEY_SENS));
+}
+
+static void wireless_sec_mode(RESULT *result, RESULT *arg1) {
+ char *dev=R2S(arg1);
+ if (check_socket() != 0) return;
+
+ save_result(result,dev,KEY_SEC_MODE,get_sec_mode(dev, KEY_SEC_MODE));
+}
+
+/*
+init and cleanup
+*/
+
+int plugin_init_wireless(void)
+{
+ AddFunction ("wifi_level", 1, wireless_level);
+ AddFunction ("wifi_noise", 1, wireless_noise);
+ AddFunction ("wifi_quality", 1, wireless_quality);
+ AddFunction ("wifi_protocol", 1, wireless_protocol);
+ AddFunction ("wifi_frequency", 1, wireless_frequency);
+ AddFunction ("wifi_bitrate", 1, wireless_bitrate);
+ AddFunction ("wifi_essid", 1, wireless_essid);
+ AddFunction ("wifi_op_mode", 1, wireless_op_mode);
+ AddFunction ("wifi_sensitivity", 1, wireless_sensitivity);
+ AddFunction ("wifi_sec_mode", 1, wireless_sec_mode);
+
+ return 0;
+}
+
+void plugin_exit_wireless(void)
+{
+ if (sock>0) close(sock);
+ hash_destroy(&wireless);
+}
projects / lcd4linux.git / commitdiff