[pisa-src] r1113 - trunk/tools
- From: Tobias Heer <tobias.heer@xxxxxxxxxxxxxxxxx>
- To: pisa-src@xxxxxxxxxxxxx
- Date: Tue, 13 Oct 2009 15:27:00 +0200
Author: heer
Date: Tue Oct 13 15:27:00 2009
New Revision: 1113
Log:
Modified the iwlist parser and supplemented it with a handover script
Added:
trunk/tools/auto-handover.sh (contents, props changed)
trunk/tools/iwlist_parser.c (contents, props changed)
- copied, changed from r1073, trunk/tools/iwlist_parser.cc
Deleted:
trunk/tools/iwlist_parser.cc
Added: trunk/tools/auto-handover.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ trunk/tools/auto-handover.sh Tue Oct 13 15:27:00 2009 (r1113)
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+echo "This file searches APs with SSID $PATTERN* and switches to the strongest
signal"
+
+
+#your parameters
+WIFI_IF="eth2"
+PATTERN="pisa-demo"
+
+## internal parameters
+last_result="NONE"
+
+while [ 1 ]
+do
+result=($(iwlist $WIFI_IF scan | ./piwlist -s $PATTERN))
+
+if [ "${result[0]}" == "NONE" ]
+then
+ echo "No PISA access points nearby"
+else
+ if [ "$last_result" != "${result[0]}" ]
+ then
+ echo "Changing to " ${result[1]}
+ iwconfig $WIFI_IF ap ${result[0]} essid ${result[1]}
+ arp -d -a
+ last_result=${result[0]}
+ else
+ echo "Access Point is still best"
+ fi
+
+fi
+sleep 5
+done
Copied and modified: trunk/tools/iwlist_parser.c (from r1073,
trunk/tools/iwlist_parser.cc)
==============================================================================
--- trunk/tools/iwlist_parser.cc Thu Oct 8 19:31:25 2009 (r1073,
copy source)
+++ trunk/tools/iwlist_parser.c Tue Oct 13 15:27:00 2009 (r1113)
@@ -13,9 +13,10 @@
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
-
+#include <stdbool.h>
#include <unistd.h>
+
#define MAX_CELLS 32
#define ESSID_LENGTH 32
#define MAC_LENGTH 18
@@ -236,24 +237,31 @@
//Select best SignalStrength for given AP (or all AP's)
int iIndexCell = 0;
int iBestStrength = 0;
-
- for( int i = 0; i < MAX_CELLS; i++ ) {
+ int i;
+ int foundBest = false;
+ for( i = 0; i < MAX_CELLS; i++ ) {
if( strEssid[i] == 0 )
continue;
- if( strcmp(strEssid[i], strSelectedESSID) == 0 ||
!essidflag ) {
+ if( strncmp(strEssid[i], strSelectedESSID,
strlen(strSelectedESSID)) == 0 || !essidflag ) {
+
if( iSignalStrength[i] > iBestStrength) {
iBestStrength = iSignalStrength[i];
iIndexCell = i;
#ifdef DEBUG
printf("Set index for best Cell to:
%i\n", i);
#endif
+ foundBest = true;
}
}
}
-
+
//Output
- printf("ap %s essid %s", strMAC[iIndexCell],
strEssid[iIndexCell]);
+ if(foundBest == true){
+ printf("%s %s %d", strMAC[iIndexCell],
strEssid[iIndexCell], iSignalStrength[iIndexCell]);
+ }else{
+ printf("NONE");
+ }
}
// Log a given message to a file (currently a fixed one).
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