#!/bin/bash /usr/scripts/python.sh
# -*- encoding: utf-8 -*-

import socket
import sys
import re
import psycopg2
import psycopg2.extras
import gestion.affichage as affichage
import lc_ldap.shortcuts
import argparse
import time
import gestion.config as config
import subprocess

ldap = lc_ldap.shortcuts.lc_ldap_readonly()
encoding = "UTF-8"

def get_stats(args):
    output = pretty_header(args) + "\n"
    output += u"Période considérée : du %s au %s.\n" % (args.begin, args.end)
    output += u"Attention, l'upload total et le download total sont calculés sur les %s plus grosses entrées." % (args.limit)

    if not args.fichier:
        print output.encode(encoding)
        output = u""
    else:
        output += u"\n"
    pgsql = psycopg2.connect(database='filtrage', user='crans')
    pgsql.set_session(autocommit=True)
    curseur = pgsql.cursor(cursor_factory=psycopg2.extras.DictCursor)
    ip_requete = """
SELECT
    SUM(upload) as tot_upload,
    SUM(download) as tot_download,
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
FROM (
        (
        SELECT
            sum(bytes) as upload,
            '0' as download,
            mac_src as mac,
            ip_src as ip_crans,
            ip_dst as ip_ext,
            port_src as port_crans,
            port_dst as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_src
        WHERE
            ip_src=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(plage_ens)s
        AND NOT
            ip_dst <<= inet%(appt)s
        AND NOT
            ip_dst <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    UNION
        (
        SELECT
            '0' as upload,
            sum(bytes) as download,
            mac_dst as mac,
            ip_dst as ip_crans,
            ip_src as ip_ext,
            port_dst as port_crans,
            port_src as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_dst
        WHERE
            ip_dst=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_src <<= inet%(plage_ens)s
        AND NOT
            ip_src <<= inet%(appt)s
        AND NOT
            ip_src <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    )
AS
    famille
GROUP BY
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
"""
    mac_requete = """
SELECT
    SUM(upload) as tot_upload,
    SUM(download) as tot_download,
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
FROM (
        (
        SELECT
            sum(bytes) as upload,
            '0' as download,
            mac_src as mac,
            ip_src as ip_crans,
            ip_dst as ip_ext,
            port_src as port_crans,
            port_dst as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_src
        WHERE
            machines.mac_addr=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(plage_ens)s
        AND NOT
            ip_dst <<= inet%(appt)s
        AND NOT
            ip_dst <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    UNION
        (
        SELECT
            '0' as upload,
            sum(bytes) as download,
            mac_dst as mac,
            ip_dst as ip_crans,
            ip_src as ip_ext,
            port_dst as port_crans,
            port_src as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_dst
        WHERE
            machines.mac_addr=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_src <<= inet%(plage_ens)s
        AND NOT
            ip_src <<= inet%(appt)s
        AND NOT
            ip_src <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    )
AS
    famille
GROUP BY
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
"""
    adh_requete = """
SELECT
    SUM(upload) as tot_upload,
    SUM(download) as tot_download,
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
FROM (
        (
        SELECT
            sum(bytes) as upload,
            '0' as download,
            mac_src as mac,
            ip_src as ip_crans,
            ip_dst as ip_ext,
            port_src as port_crans,
            port_dst as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_src
        WHERE
            machines.type=%(pg_filter)s
        AND
            machines.id=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(plage_ens)s
        AND NOT
            ip_dst <<= inet%(appt)s
        AND NOT
            ip_dst <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    UNION
        (
        SELECT
            '0' as upload,
            sum(bytes) as download,
            mac_dst as mac,
            ip_dst as ip_crans,
            ip_src as ip_ext,
            port_dst as port_crans,
            port_src as port_ext
        FROM
            upload
        LEFT JOIN
            machines
        ON
            machines.mac_addr = upload.mac_dst
        WHERE
            machines.type=%(pg_filter)s
        AND
            machines.id=%(pg_value)s
        AND NOT
            ip_src <<= inet%(ipv6_local)s
        AND NOT
            ip_dst <<= inet%(ipv6_local)s
        AND NOT
            ip_src <<= inet%(plage_ens)s
        AND NOT
            ip_src <<= inet%(appt)s
        AND NOT
            ip_src <<= inet%(plage_ipv6)s
        AND
            stamp_inserted >= %(begin)s
        AND
            stamp_updated <= %(end)s
        GROUP BY
            mac,
            ip_crans,
            ip_ext,
            port_crans,
            port_ext
        )
    )
AS
    famille
GROUP BY
    mac,
    ip_crans,
    ip_ext,
    port_crans,
    port_ext
"""
    if args.download:
        mac_requete += "ORDER BY tot_download DESC"
        ip_requete += "ORDER BY tot_download DESC"
        adh_requete += "ORDER BY tot_download DESC"
        down_color = "rouge"
        up_color = "vert"
    else:
        mac_requete += "ORDER BY tot_upload DESC"
        ip_requete += "ORDER BY tot_upload DESC"
        adh_requete += "ORDER BY tot_upload DESC"
        down_color = "vert"
        up_color = "rouge"

    mac_requete += " LIMIT %s" % (args.limit)
    ip_requete += " LIMIT %s" % (args.limit)
    adh_requete += " LIMIT %s" % (args.limit)

    fill_in_dict = {
                    "begin" : args.begin,
                    "end" : args.end,
                    "plage_ens" : config.plage_ens,
                    "ipv6_local" : 'fe80::/8',
                    "plage_ipv6" : config.prefix['subnet'][0],
                    "appt" : config.NETs['personnel-ens'][0],
                    }

    if args.aid:
        pg_filter = "adherent"
        pg_value = int(args.aid)
        fill_in_dict.update({'pg_filter' : pg_filter, 'pg_value' : pg_value})
        curseur.execute(adh_requete, fill_in_dict)
    elif args.cid:
        pg_filter = "adherent"
        pg_value = int(args.cid)
        fill_in_dict.update({'pg_filter' : pg_filter, 'pg_value' : pg_value})
        curseur.execute(adh_requete, fill_in_dict)
    elif args.ip:
        print "Attention, les statistiques par IP sont une mauvaise idée depuis que les extensions de vie privée IPv6 sont actives."
        pg_value = args.ip
        fill_in_dict.update({'pg_value' : pg_value})
        curseur.execute(ip_requete, fill_in_dict)
    elif args.mac:
        pg_value = args.mac
        fill_in_dict.update({'pg_value' : pg_value})
        curseur.execute(mac_requete, fill_in_dict)
    else:
        pg_value = ldap.search(u"(host=%s)" % (args.data))[0]['macAddress'][0].value
        if pg_value == '<automatique>':
            print "MAC de la machine %s fixée à %s, problème. :o" % (args.data, pg_value)
        fill_in_dict.update({'pg_value' : pg_value})
        curseur.execute(mac_requete, fill_in_dict)
    stats = curseur.fetchall()

    peuplade_ip = {}
    def convert_ip(ip):
        host = peuplade_ip.get(ip, [])
        if host:
            return host
        else:
            peuplade_ip[ip] = socket.getfqdn(ip)
            return peuplade_ip[ip]

    if args.dns:
        convert = lambda ip:convert_ip(ip)
    else:
        convert = lambda ip:ip

    if not args.fichier or args.couleur:
        styles = (None, None, None, None, None, down_color, up_color)
    else:
        styles = None
    entete = [u"Mac", u"Ip_crans", u"Ip_ext", u"Port_crans", u"Port_ext", unicode("Download (Mio)"), unicode("Upload (Mio)")]
    longueur = [17, '*', '*', 10, 8, 14, 14]
    format = ('s', 's', 's', 's', 's', 'o', 'o')
    data = [[unicode(ligne['mac']), unicode(convert(ligne['ip_crans'])), unicode(convert(ligne['ip_ext'])), unicode(ligne['port_crans']), unicode(ligne['port_ext']), unicode(ligne["tot_download"]), unicode(ligne["tot_upload"])] for ligne in stats]
    final_data = affichage.tableau(data, titre=entete, largeur=longueur, styles=styles, format=format)

    output += u"Upload total : %s Mio, download total : %s Mio\n" % (sum([int(ligne["tot_upload"]) for ligne in stats])/1024/1024, sum([int(ligne["tot_download"]) for ligne in stats])/1024/1024)
    output += final_data

    if not args.fichier:
        print output.encode(encoding)
    else:
        with open(args.fichier, 'w') as fichier:
            fichier.write(output.encode(encoding))

def pretty_header(args):
    if args.aid:
        adh = ldap.search(u"(aid=%s)" % (args.aid))[0]
        prenom = unicode(adh['prenom'][0])
        nom = unicode(adh['nom'][0])
        good_sentence = u"Statistiques d'upload de %s %s" % (prenom, nom)
    elif args.cid:
        club = ldap.search(u"(cid=%s)" % (args.cid))[0]
        prenom = "club"
        nom = unicode(club['nom'][0])
        good_sentence = u"Statistiques d'upload du %s %s" % (prenom, nom)
    elif args.ip:
        machine = ldap.search(u"(|(ipHostNumber=%(val)s)(ip6HostNumber=%(val)s))" % {'val' : args.ip})[0]
        nom = unicode(machine['host'][0])
        good_sentence = u"Statistiques d'upload de la machine %s" % (nom)
    elif args.mac:
        machine = ldap.search(u"(macAddress=%s)" % (args.mac))[0]
        nom = unicode(machine['host'][0])
        good_sentence = u"Statistiques d'upload de la machine %s" % (nom)
    else:
        machine = ldap.search(u"(host=%s)" % (args.data))[0]
        nom = unicode(machine['host'][0])
        good_sentence = u"Statistiques d'upload de la machine %s" % (nom)
    if not args.fichier or args.couleur:
        return affichage.style(good_sentence, 'gras')
    return good_sentence

def self_call(args):
    args = ["/usr/scripts/surveillance/analyse2.py"] + args
    subprocess.Popen(args, stdout=subprocess.PIPE)

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Script d'analyse d'échange de données entre un truc et un autre.", add_help=False)
    meg = parser.add_mutually_exclusive_group()
    meg.add_argument("-a", "--aid", help="Rechercher tout l'upload d'un adhérent. Il ne faut pas renseigner data si on utilise cette option.", action="store", type=int)
    parser.add_argument("-b", "--begin", help="Date de début, dans un format \"AAAA/MM/JJ HH:MM:SS\"", type=str, action="store")
    meg.add_argument("-c", "--cid", help="Rechercher tout l'upload d'un club. Il ne faut pas renseigner data si on utilise cette option.", action="store", type=int)
    parser.add_argument("-C", "--couleur", help="Force la présence des couleurs et styles, y compris avec -f.", action="store_true")
    parser.add_argument("-d", "--download", help="Trier par download décroissant", action="store_true")
    parser.add_argument("-e", "--end", help="Date de fin, dans un format \"AAAA/MM/JJTHH:MM:SS\"", type=str, action="store")
    parser.add_argument("-f", "--fichier", help="Sauvegarder le résultat de la recherche dans le fichier FILE. Désactive les fonctions de style (couleur...)", type=str, action="store")
    parser.add_argument("-h", "--help", help="Affiche cette aide et quitte.", action="store_true")
    meg.add_argument("-i", "--ip", help="Filtrer sur l'ip fournie. Format IPv4 ou IPv6. Il ne faut pas renseigner data si on utilise cette option.", action="store", type=str)
    parser.add_argument("-l", "--limit", help="Limiter le nombre de résultats.", action="store", type=int)
    meg.add_argument("-m", "--mac", help="Filtrer sur la mac fournie. Format \"aa:bb:cc:dd:ee:ff\". Il ne faut pas renseigner data si on utilise cette option.", action="store", type=str)
    parser.add_argument("-w", "--dns", help="Forcer la résolution dns des IP lorsque c'est possible. Attention, c'est gourmand en temps.", action="store_true")
    meg.add_argument("data", help="La donnée suivant laquelle rechercher. Si pas d'autre option, doit être renseigné à un nom de machine.", type=str, nargs='?')

    args = parser.parse_args()
    now = time.time()

    if args.help:
        parser.print_help()
        sys.exit(0)
    if not (args.data or args.aid or args.cid or args.ip or args.mac):
        print "Il faut fournir un nom de machine, ou autre."
        parser.print_help()
        sys.exit(7)
    if not args.begin:
        args.begin = time.strftime("%Y/%m/%d %H:%M:%S", time.localtime(now - 86400))
    if not args.end:
        args.end = time.strftime("%Y/%m/%d %H:%M:%S", time.localtime(now))
    if not args.download:
        args.download = False
    if not args.limit:
        args.limit = 1000
    get_stats(args)