Servidores centros secundaria

' Gambas class file

' This program 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 of the

' License, OR (at your option) any later version.

'

' This program IS distributed IN the hope that it will be useful, but

' IS provided AS IS, WITHOUT ANY WARRANTY; without even the implied

' warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND

' NON-INFRINGEMENT. See the GNU General PUBLIC License FOR more details.

'

' You should READ the GNU General PUBLIC License

' IF you have non, WRITE TO the Free Software

' Foundation, INC., 59 Temple Place - Suite 330, Boston,

' # MA 02111-1307, USA.

' ----------------------------------------------------------------------------

' ################################################

' # file name : scaniesltsp.class

' # created in project : scanies-ltsp

' # created by : Francisco Paniagua Sánchez

' # mail : adminies.franciscodeorellana@edu.juntaextremadura.net

' # created at : 10/03/2009

' # last test with : gambas-2.7-1

' ################################################

STATIC clase AS scaniesltsp

PRIVATE proceso AS Process

STATIC PUBLIC SUB Main()

clase = NEW scaniesltsp

END

PUBLIC SUB _New()

proceso = SHELL "avahi-browse _workstation._tcp -frpkl | grep \"eth0;IPv4\"" FOR INPUT

END

PRIVATE FUNCTION obtener_mac(cadena AS String[]) AS String

RETURN Right(cadena[2], 2) & ":" & Right(cadena[3], 2) & ":" & Right(cadena[4], 2) & ":" & Right(cadena[5], 2) & ":" & Right(cadena[6], 2) & ":" & Right(cadena[7], 2)

END

PRIVATE FUNCTION esportatil(servidor AS String, cliente AS String) AS String

DIM aula AS String[]

DIM caracteres AS Byte

DIM resultado AS String

aula = Split(servidor, "-")

caracteres = Len(aula[0])

IF (aula[0] = Left(cliente, caracteres)) THEN

'es cliente ligero mantenemos nombre

resultado = cliente

ELSE 'es portatil anexamos nombre clase

resultado = servidor & "--" & cliente

ENDIF

RETURN resultado

END

PRIVATE SUB publicar(aula AS String, nombre AS String, direccion AS String, mac AS String)

DIM texto AS String

DIM fichero AS String

DIM dato AS String

DIM ip AS String[]

DIM dirip AS String

DIM nombrefinal AS String

fichero = "/tmp/temporalscan"

'esto es porque a veces se meten direcciones ipv6

IF (Left(direccion, 7) = "192.168") THEN

texto = direccion & "#" & mac

ELSE

'Hay que resolverlo a mano

SHELL "avahi-resolve-host-name -4 " & nombre & ".local > " & fichero WAIT

TRY dato = File.Load(fichero)

'si el dato es vacio

IF (dato <> "") THEN

ip = Split(dato, "\t")

dirip = Left(ip[1], Len(ip[1]) - 1)

ELSE

dirip = "no-ip"

ENDIF

texto = dirip & "#" & mac

ENDIF

nombrefinal = esportatil(aula, nombre)

SHELL "avahi-publish-service -f " & nombrefinal & " _scanies._tcp 9013 " & texto & " 2>/dev/null &" WAIT

END

PUBLIC SUB borrar(nombre AS String)

DIM fichero AS String

DIM buscar AS String

fichero = "/tmp/buscar"

buscar = nombre & " _scanies._tcp"

'lo borro de la red

SHELL "ps aux | grep \"" & buscar & "\" | grep -v grep | awk '{print $2}' > " & fichero WAIT

'TRY pid = File.Load(fichero)

SHELL "kill -9 `cat " & fichero & "` 2>/dev/null" WAIT

END

PUBLIC SUB process_read()

DIM cadena AS String

DIM campos AS String[]

DIM mascampos AS String[]

DIM nombre AS String

DIM direccionip AS String

DIM mac AS String

DIM pid AS String

DIM nombreservidor AS String

DIM failedtemp AS String

DIM failedhost AS String

DIM aula AS String[]

nombreservidor = Trim(System.host)

aula = Split(nombreservidor, ".")

TRY LINE INPUT #LAST, cadena

IF NOT (Left(cadena, 6) = "Failed") THEN 'si no hay fallo se analiza

campos = Split(cadena, ";")

IF (campos[0] = "=") THEN 'esta encendido

direccionip = campos[7]

mascampos = Split(campos[3], "\\")

mac = obtener_mac(mascampos)

'publicar

publicar(aula[0], mascampos[0], direccionip, mac)

ELSE IF (campos[0] = "-") THEN 'se apaga

'fichero = "/tmp/buscar"

mascampos = Split(campos[3], "\\")

'componer nombre

nombre = esportatil(aula[0], mascampos[0])

'borrar

borrar(nombre)

ELSE 'descartamos

PRINT "Log1 (+): " & cadena

ENDIF

ELSE

'formato es: Failed to resolve service 'nombre-equipo [00:30:05:42:26:35]' of type ...

campos = Split(cadena, " ")

failedtemp = campos[4]

'obtener solo el nombre

mascampos = Split(failedtemp, " ")

failedhost = Right(mascampos[0], Len(mascampos[0]) - 1)

'y borrar de la lista

nombre = esportatil(aula[0], failedhost)

borrar(nombre)

ENDIF

END

PUBLIC SUB _free()

proceso.Kill

END