ESP WiFi sniffer with OLED and http upload

#include "ESP8266WiFi.h"
#include "oled.h"
ADC_MODE(ADC_VCC);
OLED Display=OLED(D1,D2);
int RawPort = A0;
char server[] = "192.168.1.101";
String uploadfile = "wifi.php";
String postVariable = "WiFi=";
const char* ssid = "MyWiFi";
const char* password = "P@55w0rd";
String total = "";
void setup() {
//  Serial.begin(115200);
//  Serial.println("");
  Display.begin();
  Display.setTTYMode(true);
  pinMode(LED_BUILTIN, OUTPUT);
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);
  Display.print("Battery: ");
  Display.print(ESP.getVcc());
//  Display.print("\n\rSetup done");
}
void loop() {
//  int Batt = ESP.getVcc();
//  Serial.print("Battery voltage is: "+Batt);
//  Display.print(ESP.getVcc());
//  Serial.print("Wifi scan...");
  Display.set_contrast(128);
  Display.print("\n\rScan...");
  int n = WiFi.scanNetworks();
//  Serial.println(" done");
  Display.println(" done");
  if (n == 0) {
//    Serial.println("No Networks Found");
    Display.printf("No Networks Found");
    digitalWrite(LED_BUILTIN, LOW);
  }
  else {
//    Serial.print(n);
//    Serial.println(" Networks found");
    digitalWrite(LED_BUILTIN, HIGH);
    Display.set_contrast(8);
    Display.printf("%d networks found",n);
    String nr = String(n) + " APs detected. ";
    for (int i = 0; i < n; ++i) {
//      Serial.print(i + 1);
//      Serial.print(": ");
//      Serial.print(WiFi.SSID(i));
//      Serial.print(" RSSI: ");
//      Serial.print(WiFi.RSSI(i)); 
//      Serial.print(" MAC: ");
//      Serial.print(WiFi.BSSIDstr(i));
//      Serial.print(" Enc: ");
//      Serial.println(encType(i));
    Display.println();
    Display.print(i + 1);
    Display.print(": ");
    Display.print(WiFi.SSID(i));
    Display.print(" (");
    Display.print(WiFi.RSSI(i));
    Display.println(")");
    Display.print("   ");
    Display.print(WiFi.BSSIDstr(i));
    total = total+String(i+1)+": "+String(WiFi.SSID(i))+" "+String(WiFi.BSSIDstr(i))+" "+String(WiFi.RSSI(i))+"db "+String(encType(i))+". ";
    delay(500);
    }
 
    WiFi.scanDelete();
    delay (500);
    Display.println("\n\rSleep for 1min...");
    
    WiFiClient client;
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
     delay(500);
    }
    
    
    String postData = postVariable + nr + total;
//    Serial.print("Transmitted data: ");
//    Serial.println(postData);
    
    if (client.connect(server, 80)) {
     client.print("POST /");
     client.print(uploadfile);
     client.println(" HTTP/1.1");
     client.print("Host: ");
     client.println (server);
     client.println("Content-Type: application/x-www-form-urlencoded");
     client.print("Content-Length: ");
     client.println(postData.length());
     client.println();
     client.print(postData);
    }
    if (client.connected()) {
      client.stop();
    }
//   Serial.println("Sleeping ");
   Display.set_power(false);
//   delay(10000);
   ESP.deepSleep(6e+7); // 60 sec  
  }
}
// Readable Encryption Type
String encType(int id){
String type;
  if(WiFi.encryptionType(id) == ENC_TYPE_WEP){ type=" WEP";
  }else if(WiFi.encryptionType(id) == ENC_TYPE_TKIP){ type="WPA-TKIP";    
  }else if(WiFi.encryptionType(id) == ENC_TYPE_CCMP){ type="WPA2-CCMP";    
  }else if(WiFi.encryptionType(id) == ENC_TYPE_AUTO){ type="WPA-WPA2";    
  }else if(WiFi.encryptionType(id) == ENC_TYPE_NONE){ type="OPEN";    
  }
  return type;
}

$cat wifi.php

<?php

$file = fopen("/var/www/html/wifi.txt", "a+") or die("Unable to open file!");

date_default_timezone_set("America/New_York");

$time = date('Y-m-d_H:i:s');

$read = $_POST["WiFi"];

$data = "{$time} - {$read}\n";

fwrite($file, $data);

fclose($file);

?>

Check if WiFi is still connected on rpi

 #!/bin/bash

gateway='192.168.0.1'

lockfile='/var/run/chk-wifi.pid'

wlan='wlan0'

if [ -e $lockfile ]; then

    echo `date +%F\ %T\ `$0": A lockfile exists... Lets check to see if it is still valid"

    pid=`cat $lockfile`

    if kill -0 &>1 > /dev/null $pid; then

     echo `date +%F\ %T\ `$0": Process still running, Lockfile valid."

     exit 1

    else

     echo `date +%F\ %T\ `$0": Invalid Lockfile, Removing."

     rm $lockfile

    fi

fi

#echo `date +%F\ %T\ `$0": Setting Lockfile"

echo $$ > $lockfile

#echo `date +%F\ %T\ `$0": Performing network check for $wlan"

ping -c2 $gateway 2>&1

rc=$?

if [[ $rc -eq 0 ]] ; then

        echo `date +%F\ %T\ `$0": The network is up."

else

        echo `date +%F\ %T\ `$0": Network down! Attempting reconnection."

        ifdown $wlan

#        echo `date +%F\ %T\ `$0": Cycling rpi3 onboard wifi driver"

        rmmod brcmfmac

        sleep 2

#        echo `date +%F\ %T\ `$0": Most probable cause in rpi1-2 is USB jamming, cycling the power on USB"

#        echo 0 > /sys/devices/platform/soc/20980000.usb/buspower

#        sleep 2

#        echo 1 > /sys/devices/platform/soc/20980000.usb/buspower

#        sleep 1

#        echo `date +%F\ %T\ `$0": Bringing back the WiFi"

        modprobe brcmfmac

        ifup --force $wlan

#        sleep 1

#        echo `date +%F\ %T\ `$0": New IP: $(ifconfig $wlan | grep 'inet addr')"

#        echo `date +%F\ %T\ `$0": "$(hostname -I)

fi

#echo `date +%F\ %T\ `$0": Remove lock & exit"

rm $lockfile

exit 0

15

15

DD-WRT on a Videotron reflashed DIR-825

The Videotron custom firmware does not allow local upgrade. On the firmware update page there is a nice "Firmware upgrade: Disabled" and that's where the update ends in the main interface.
In order to update, I've rebooted in  recovery mode browser by keeping the reset pressed white plugin the power. However, the upload process was always staying at 0% and didn't finished;
Then I've hexedited the factory-to-ddwrt_NA.bin and changed the last byte in the file from "0" to "2" - still no luck;
I've tried uploading directly from the shell: "ifconfig enp0s25 192.168.0.34 up && curl -0vF files=@factory-to-ddwrt_NA.bin http://192.168.0.1/cgi/index" - nope, still nothing;

The solution was deceivingly simple: I've put a switch between the D-Link and the computer - then the curl upload worked perfectly!

Asterisk PAGE say time every hour

Digium D6x phones and CyberData SIP Speakers  are used to page.
The phones are also used as intercoms (bidirectional page).

To start, we need accounts for the phones/speakers added to sip.conf:



[phone1] ; Phone
type=friend
host=dynamic
context=my-context
secret=5678
mailbox=319

[speaker1]; Speaker
type=friend 
host=dynamic
context=my-context
secret=1234
mailbox=329
record_out=Adhoc
record_in=Adhoc
qualify=no

Then in extensions.conf, in the [my-context] context, add:

; Paging extensions

exten => 3319,1,GotoIf($[ ${CALLERID(number)} = 319 ]?skipself)

exten => 3319,1,SIPAddHeader(Alert-Info: info=<intercom>) ; Digium D6x require this to enable paging - search documentation for different phone models!

exten => 3319,n,Dial(SIP/phone1) ; this is the phone1 defined in sip.conf

exten => 3319,n(skipself),Noop(Not paging originator)

exten => 3329,1,GotoIf($[ ${CALLERID(number)} = 329 ]?skipself)

exten => 3329,n,Dial(SIP/speaker1,50) ; this is the speaker1 defined in sip.conf

exten => 3329,n(skipself),Noop(Not paging originator)

exten => 398,1,Page(LOCAL/3319@my-context&LOCAL/3329@my-context,di,120) ; Bidirectional PAGE - that's what the "d" does.

exten => 398,n,Hangup()

With this, we can dial 398 and the PAGE should work.

Now, in order to say the time automatically, we need a .call file, let's create /var/lib/asterisk/third-party/say-time.call

Channel: LOCAL/398@my-context

MaxRetries: 10

RetryTime: 5

WaitTime: 20

Context: page-say-time

Extension: 3310

Of course, we need to create the [page-say-time] context in extensions.conf:

[page-say-time]

exten => 3310,1,Answer()

exten => 3310,n,Wait(1)

exten => 3310,n,Playback(at-tone-time-exactly) ; this sound file is already in asterisk sounds

exten => 3310,n,Wait(1)

exten => 3310,n,SayUnixTime(,EST,IMp)

exten => 3310,n,Wait(1)

exten => 3310,n,Playback(beep) ; this sound file is already in asterisk sounds

exten => 3310,n,Wait(2)

exten => 3310,n,Hangup()

and the last step, create a crontab that copies the say-time.call to the astersk outgoing at every fix hour:

0  * *  *  * /bin/cp /var/lib/asterisk/third-party/say-time.call /var/spool/asterisk/outgoing/

Copy standard switch port groups from one esx host to another

The below code asks for lmvap-vcs60 credentials, connects to Vcenter, and copied aesx11 vSwitch2 portgroups over to a new host called aesx05 using vSwitch1. (or so said my buddy Josh O. who wrote it) 

$vccred = get-credential

connect-viserver -server lmvap-vcs60.domain.tld -credential $vccred

$dest = get-virtualswitch -name vSwitch1 -vmhost aesx05.domain.tld

$source = get-virtualportgroup -vmhost aesx11.domain.tld -virtualswitch vSwitch2 -standard

$countvar = $source.count

for ($a=0 ; $a -le $countvar-1 ; $a++)

{

$pgname = $source[$a].name

$vlan = $source[$a].VLANID

new-virtualportgroup -virtualswitch $dest -name $pgname -VLANID $vlan

}

disconnect-viserver -server lmvap-vcs60.domain.tld -confirm:$false