Import initial
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440
gestion/gen_confs/wifi.py
Executable file
440
gestion/gen_confs/wifi.py
Executable file
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#! /usr/bin/env python
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# -*- coding: iso-8859-15 -*-
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import time, commands
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from gen_confs import gen_config, ERREUR, OK, anim
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class conf_wifi(gen_config) :
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""" Génération de la configuration de isakmpd dans ISAKMPD_CONF
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Le fichier est constitué en 5 parties :
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1) Configuration générale insérée telle quelle
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2) Phase 1 : une ligne par host suivant template
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3) Phase 2 : une entrée par machine
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4) Bloc par machine suivant template
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5) Ajout de net_crans
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"""
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######################################PARTIE DE CONFIGURATION
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# Fichiers à écrire
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# Répertoire d'écriture des fichiers de zone
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ISAKMPD_CONF='/tmp/isakmpd.conf'
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# Config générale
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general="""
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[General]
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Listen-on= 138.231.148.1
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Retransmits= 5
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Exchange-max-time= 29
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Logverbose= 1
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Loglevel= A=90
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Check-interval= 60
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Default-phase-1-lifetime= 1200,90:86400
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Default-phase-2-lifetime= 1800,120:86400
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[Default-main-mode]
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DOI= IPSEC
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EXCHANGE_TYPE= ID_PROT
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Transforms= 3DES-SHA,3DES-MD5
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[Default-quick-mode]
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DOI= IPSEC
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EXCHANGE_TYPE= QUICK_MODE
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Suites= QM-ESP-AES-SHA-SUITE, QM-ESP-AES-MD5-SUITE, \\
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QM-ESP-BLF-SHA-SUITE, QM-ESP-BLF-MD5-SUITE, \\
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QM-ESP-3DES-SHA-SUITE, QM-ESP-3DES-MD5-SUITE, \\
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QM-ESP-AES-SHA-PFS-SUITE, QM-ESP-AES-MD5-PFS-SUITE, \\
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QM-ESP-BLF-SHA-PFS-SUITE, QM-ESP-BLF-MD5-PFS-SUITE, \\
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QM-ESP-3DES-SHA-PFS-SUITE, QM-ESP-3DES-MD5-PFS-SUITE
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"""
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# Phase 1
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phase1_debut="[Phase 1]\n"
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phase1_template="%(IP)s= ISAKMP-peer-%(HOST)s\n"
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# Phase 2
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phase2_debut="[Phase 2]\nPassive-connections= "
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phase2_template="IPsec-%(HOST)s"
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phase2_sep=', \\\n '
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#Lignes necessaires pour chaque machine
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host_template="""
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[ISAKMP-peer-%(HOST)s]
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Phase= 1
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Transport= udp
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Address= %(IP)s
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Configuration= Default-main-mode
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Authentication=%(KEY)s
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[IPsec-%(HOST)s]
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Phase= 2
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ISAKMP-peer= ISAKMP-peer-%(HOST)s
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Configuration= Default-quick-mode
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Local-ID= Net-crans
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Remote-ID= Net-%(HOST)s
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[Net-%(HOST)s]
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ID-type= IPV4_ADDR
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Address= %(HOST)s
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"""
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# Dernière partie du fichier
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net_crans="""
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[Net-crans]
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ID-type= IPV4_ADDR_SUBNET
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Network= 0.0.0.0
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Netmask= 0.0.0.0
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"""
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restart_cmd = 'kill -HUP $(cat /var/run/isakmpd.pid 2>/dev/null )'
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######################################FIN PARTIE DE CONFIGURATION
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def __str__(self) :
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return 'wifi'
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def _gen(self) :
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phase1 = self.phase1_debut
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phase2 = self.phase2_debut
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blocs=''
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for machine in self.base.search('ipsec=*&paiement=%s' % self.ann_scol)['machine'] :
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self.anim.cycle()
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if 'bloq' in machine.blacklist_actif() : continue
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data = { 'HOST' : machine.nom().split('.')[0] ,
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'IP' : machine.ip() ,
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'KEY' : machine.ipsec() }
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# Phase 1
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phase1 += self.phase1_template % data
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# Phase 2
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if blocs != '' :
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# Ce n'est pas la première machine, il faut insérer un séparateur
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phase2 += self.phase2_sep
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phase2 += self.phase2_template % data
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# Blocs machine
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blocs += self.host_template % data
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# Ecriture du fichier
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fd = self._open_conf(self.ISAKMPD_CONF,'#')
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fd.write(self.general)
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fd.write(phase1)
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fd.write('\n')
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fd.write(phase2)
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fd.write('\n')
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fd.write(blocs)
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fd.write(self.net_crans)
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fd.close()
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class bornes_wifi(gen_config) :
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""" Reconfiguration bornes wifi
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Si nom de borne fourni à l'initialisation restart uniquement celle-ci
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"""
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clef = '/etc/wifi/ssh/wifi' # Fichier clef ssh
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# Fichier
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AUTOEXEC = '/tmp/autoexec.sh'
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autoexec = """#! /bin/sh
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#***********************************************************
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# Ce fichier est généré dans wifi.py
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# Les données proviennent de la base LDAP et de la conf
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# présente au début du script.
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#
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# Génération : %(date)s
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# Fichier : %(AUTOEXEC)s
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#
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# NE PAS EDITER
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#
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#***********************************************************
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## On configure la nvram de la borne selon son adresse MAC (celle inscrite sur la borne)
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## Modifier bornes.cf et non ce fichier qui sera modifié selon le contenu de bornes.cf
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cat <<EOF | grep -i $(nvram get et0macaddr) > /tmp/params
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%(BORNES)s
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EOF
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(
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NECTARIS=138.231.148.1
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echo -n "Mise en place de syslog..."
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killall syslogd 2> /dev/null
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killall klogd 2> /dev/null
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/sbin/syslogd -R $NECTARIS
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/sbin/klogd
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echo " ok"
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read mac ip canal puissance nom < /tmp/params
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echo "Mac : $mac"
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echo "IP : $ip"
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echo "Canal : $canal"
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echo "Puiss : $puissance mW"
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echo "Nom : $nom"
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if [ "$mac" = "" ]; then
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echo "Borne inconnue"
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ping -c 1 138.231.148.1
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sleep 120
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reboot
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fi
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change=0
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echo -n IP...
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if [ "$(nvram get lan_ipaddr)" != "$ip" ]; then
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ifconfig br0 $ip netmask 255.255.252.0
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nvram set lan_ipaddr=$ip
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change=1
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fi
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echo " ok"
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echo -n Canal...
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if [ "$(nvram get wl_channel)" != "$canal" ]; then
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nvram set wl_channel=$canal
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change=1
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fi
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echo " ok"
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echo -n Puissance...
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if [ "$(nvram get txpwr)" != "$puissance" ]; then
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nvram set txpwr=$puissance
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change=1
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fi
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echo " ok"
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echo -n Nom...
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if [ "$(nvram get wan_hostname)" != "$nom" ]; then
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nvram set wan_hostname=$nom
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change=1
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fi
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echo " ok"
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echo -n Désactivation de cron...
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if [ "$(nvram get cron_enable)" != "0" ]; then
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nvram set cron_enable=0
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change=1
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fi
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echo " ok"
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echo -n Commit des changements...
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if [ $change -eq 1 ]; then
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nvram commit
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sleep 1
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# On se casse pas la tete
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reboot
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fi
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echo " ok"
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# On place un prompt pour la machine
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cd /tmp
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cat <<EOF > .profile
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export PS1="$nom ($ip) # "
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echo "
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----------------------------------
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WIFI @ CRANS
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Nom: $nom
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IP: $ip
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Puissance: $puissance
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Canal: $canal
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---------------------------------"
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EOF
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echo -n Démarrage du firewall...
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## Firewall
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DHCP=138.231.148.253
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WEB=138.231.136.6
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FTP=138.231.136.10
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WIFI=138.231.148.0/22
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flt="iptables -A FORWARD -i br0"
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iptables -F FORWARD
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$flt --destination 224.0.0.0/4 -j DROP
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$flt -m state --state ESTABLISHED,RELATED -j ACCEPT
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# DHCP
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$flt -p udp --sport bootpc --dport bootps --source 0.0.0.0 --destination 255.255.255.255 -j ACCEPT
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$flt -p udp --sport bootpc --dport bootps --source 0.0.0.0 --destination $DHCP -j ACCEPT
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$flt -p udp --sport bootpc --dport bootps --source $WIFI --destination 255.255.255.255 -j ACCEPT
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$flt -p udp --sport bootps --dport bootpc --source $DHCP --destination $WIFI -j ACCEPT
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$flt -p udp --sport bootps --dport bootpc --source $DHCP --destination 255.255.255.255 -j ACCEPT
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# Pour compter ce qui ne passe pas (et penser un jour à utiliser tcpdump pour voir ce que c'est)
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#$flt -p udp --sport bootpc --dport bootps -j LOG # Devrait être 0
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#$flt -p udp --sport bootps --dport bootpc -j LOG # Devrait être 0
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#$flt -p udp --sport bootpc --dport bootps -j ACCEPT # Devrait être 0
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#$flt -p udp --sport bootps --dport bootpc -j ACCEPT # Devrait être 0
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# ISAKMP
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$flt -p udp --source $WIFI --destination $NECTARIS --dport 500 --sport 500 -j ACCEPT
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#$flt -p udp --destination $WIFI --source $NECTARIS --dport 500 --sport 500 -j LOG # Doit être 0
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#$flt -p udp --destination $WIFI --source $NECTARIS --dport 500 --sport 500 -j ACCEPT # Doit être 0
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# DNS + Web vers Zamok + FTP sila
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$flt -p udp --source $WIFI --destination $NECTARIS --dport 53 --sport 1024: -j ACCEPT
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$flt -p tcp --source $WIFI --destination $WEB --syn --dport 443 --sport 1024: -j ACCEPT
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$flt -p tcp --source $WIFI --destination $WEB --syn --dport 80 --sport 1024: -j ACCEPT
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$flt -p tcp --source $WIFI --destination $FTP --syn --dport 21 --sport 1024: -j ACCEPT
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# ESP
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$flt -p ESP --source $WIFI --destination $NECTARIS -j ACCEPT # A 0, mais a priori, rien n'empêche d'utiliser cette ligne
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$flt -p ESP --destination $WIFI --source $NECTARIS -j ACCEPT
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iptables -P FORWARD DROP
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echo " ok"
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echo -n "Mise en place du resolv.conf..."
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cat > /tmp/myresolv.conf <<EOF
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search wifi.crans.org crans.org
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nameserver $NECTARIS
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EOF
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cp /tmp/myresolv.conf /tmp/resolv.conf
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echo " ok"
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echo -n "Mise à l'heure..."
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ntpclient -h $NECTARIS -s
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date
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echo " ok"
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echo -n "Mise en place de cron..."
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killall cron 2> /dev/null
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mkdir /tmp/cron.d 2> /dev/null
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mkdir /var/spool 2> /dev/null
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mkdir /var/spool/cron 2> /dev/null
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chmod 700 /tmp/cron.d /var/spool /var/spool/cron
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cat > /tmp/cron.updatedns <<EOF
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#! /bin/sh
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if ! cmp /tmp/myresolv.conf /tmp/resolv.conf; then
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cp /tmp/myresolv.conf /tmp/resolv.conf
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rm /etc/cron.d/dns
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sleep 61 # Sinon, il devient fou
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fi
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exit 0
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EOF
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chmod +x /tmp/cron.updatedns
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cat > /tmp/cron.ping <<EOF
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#! /bin/sh
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/usr/sbin/wl assoclist | grep -c '^assoc' | logger -t "Clients"
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ping -c 1 $NECTARIS 2> /dev/null
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sleep 61 # Idem
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exit 0
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EOF
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chmod +x /tmp/cron.ping
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cat > /tmp/cron.uptime <<EOF
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#! /bin/sh
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uptime | logger -t "Uptime"
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sleep 61 # idem
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exit 0
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EOF
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chmod +x /tmp/cron.uptime
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# klogd semble tomber en panne regulierement...
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# Ou alors, c'est syslog ?
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cat > /tmp/cron.klogd <<EOF
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#! /bin/sh
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killall klogd
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killall syslogd
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/sbin/syslogd -R $NECTARIS
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/sbin/klogd
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sleep 61 # Idem
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exit 0
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EOF
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chmod +x /tmp/cron.klogd
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# Remet en place le plus rapidement possible le resolv.conf (écrasé par la suite du démarrage)
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cat > /etc/cron.d/dns <<EOF
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*/2 * * * * root /tmp/cron.updatedns
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EOF
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# Relance certains services à intervalles réguliers
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cat > /etc/cron.d/services <<EOF
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12 * * * * root /tmp/cron.klogd
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EOF
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# Pingue toutes les 5 minutes egon, cela peut servir un jour...
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cat > /etc/cron.d/ping <<EOF
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*/5 * * * * root /tmp/cron.ping
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2 * * * * root /tmp/cron.uptime
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EOF
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# On lance cron
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cron
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echo " ok"
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) >> /tmp/autoexec.log 2>> /tmp/autoexec.log
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# Pas sûr que cela reste ordonné
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# On donne le tout à syslog
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echo "Fin du boot" >> /tmp/autoexec.log
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cat /tmp/autoexec.log | busybox logger -t "Statut"
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"""
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"#" # Ligne ici juste pour avoir un comportement correct de mon éditeur......
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def __str__(self) :
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return 'bornes wifi'
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def __init__(self,borne='') :
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self.borne = borne
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def _gen(self) :
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date = time.strftime('%A %d %B %Y %H:%M')
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BORNES = '## Liste des bornes -- source : base LDAP\n'
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BORNES = '## MAC - IP - Canal - Puissance - Nom\n'
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for b in self.base.search('puissance=*')['machine'] :
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self.anim.cycle()
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BORNES += '%s %s %s %s %s\n' % ( b.mac(), b.ip(), b.canal(), b.puissance(), b.nom() )
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BORNES += '## Fin liste des bornes'
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AUTOEXEC = self.AUTOEXEC
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fd = self._open_conf(self.AUTOEXEC)
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fd.write( self.autoexec % vars() )
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fd.close()
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def restart(self) :
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self.lock()
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if self.borne :
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bornes = [ self.borne ]
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else :
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bornes = []
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for b in self.base.search('puissance=*')['machine'] :
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bornes.append( b.nom() )
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for borne in bornes :
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anim('\treboot de %s' % borne)
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status, output = commands.getstatusoutput('ssh -i %s -o StrictHostKeyChecking=no root@%s reboot' % ( self.clef, borne ) )
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if status :
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print ERREUR
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if self.debug :
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print output
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else :
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print OK
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self.unlock()
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