This article illustrates how to create a WiFi Web application server to distribute local area contents for smartphones
WiFi adapter setup
/etc/network/interfaces: Code position: CD://Debian/playground/python/wab/interfaces
auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet dhcp
hwaddress ether 00:01:04:1b:2C:1F
auto wlan0
iface wlan0 inet static
address 192.168.2.1
netmask 255.255.255.0
WiFi Access point with Hostapd
Install hostapd package:
debarm:~# apt-get install hostapd
Create a configuration file with the following contents:
Launch Hostapd:
debarm:~# hostapd hostapd.conf &
DHCP Server
debarm:~# apt-get install isc-dhcp-server
Edit the /etc/default/isc-dhcp-server file and set the port to bind:
INTERFACES="wlan0"
Now configure our DHCP server is to specify subnetworks in its configuration file etc/dhcp/dhcpd.conf.
Here is the example of the file:
When the configuration is done, restart the dhcp server:
debarm:~# /etc/init.d/isc-dhcp-server restart
If the server is complaining about something, see the "/var/log/syslog" for more details.
FakeDNS
- fakedns.py: Code position: CD://Debian/playground/python/wab/fakedns.py
import socket
class DNSQuery:
def __init__(self, data):
self.data=data
self.dominio=''
tipo = (ord(data[2]) >> 3) & 15 # Opcode bits
if tipo == 0: # Standard query
ini=12
lon=ord(data[ini])
while lon != 0:
self.dominio+=data[ini+1:ini+lon+1]+'.'
ini+=lon+1
lon=ord(data[ini])
def respuesta(self, ip):
packet=''
if self.dominio:
packet+=self.data[:2] + "\x81\x80"
packet+=self.data[4:6] + self.data[4:6] + '\x00\x00\x00\x00' # Questions and Answers Counts
packet+=self.data[12:] # Original Domain Name Question
packet+='\xc0\x0c' # Pointer to domain name
packet+='\x00\x01\x00\x01\x00\x00\x00\x3c\x00\x04' # Response type, ttl and resource data length -> 4 bytes
packet+=str.join('',map(lambda x: chr(int(x)), ip.split('.'))) # 4bytes of IP
return packet
if __name__ == '__main__':
#qui devi mettere l'IP della FOX
ip='192.168.2.1'
print 'pyminifakeDNS:: dom.query. 60 IN A %s' % ip
udps = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
udps.bind(('',53))
try:
while 1:
data, addr = udps.recvfrom(1024)
p=DNSQuery(data)
udps.sendto(p.respuesta(ip), addr)
print 'Risposta: %s -> %s' % (p.dominio, ip)
except KeyboardInterrupt:
print 'Fine'
udps.close()
Install non-free Atheros firmware
Add a "non-free" component to /etc/apt/sources.list, for example:
deb http://http.debian.net/debian/ wheezy main contrib non-free
Update the list of available packages and install the firmware-atheros package:
# apt-get update && apt-get install firmware-atheros
Related links
Documentation Terms of Use
The Acme Systems srl provides this Debian system development and user manual.
The origin of these doc came from the website: http://www.acmesystems.it