# -*- coding: utf-8 -*- from __future__ import print_function import willie import datetime import difflib from email.utils import mktime_tz from fnmatch import fnmatch import git import netaddr import json import urllib2 import re import os import random import shelve import subprocess import time import dns.resolver,dns.reversename import SocketServer import threading msgserver = None peers_repo = None nodeaccess = None alfred_method = None ffpb_resolver = dns.resolver.Resolver () ffpb_resolver.nameservers = ['10.132.254.53'] class MsgHandler(SocketServer.BaseRequestHandler): """Reads line from TCP stream and forwards it to configured IRC channels.""" def handle(self): data = self.request.recv(2048).strip() sender = self._resolve_name (self.client_address[0]) bot = self.server.bot if bot is None: print("ERROR: No bot in handle() :-(") return target = bot.config.core.owner if bot.config.has_section('ffpb'): is_public = data.lstrip().lower().startswith("public:") if is_public and not (bot.config.ffpb.msg_target_public is None): data = data[7:].lstrip() target = bot.config.ffpb.msg_target_public elif not (bot.config.ffpb.msg_target is None): target = bot.config.ffpb.msg_target bot.msg(target, "[{0}] {1}".format(sender, str(data))) def _resolve_name (self, ip): """Resolves the host name of the given IP address and strips away the suffix (.infra)?.ffpb""" if ip.startswith ("127."): return "localhost" try: addr = dns.reversename.from_address (ip) return re.sub ("(.infra)?.ffpb.", "", str (ffpb_resolver.query (addr, "PTR")[0])) except dns.resolver.NXDOMAIN: return ip class ThreadingTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer): pass def setup(bot): global msgserver, peers_repo, alfred_method, nodeaccess # signal begin of setup routine bot.memory['ffpb_in_setup'] = True # load list of seen nodes from disk seen_nodes = shelve.open('nodes.seen', writeback=True) bot.memory['seen_nodes'] = seen_nodes # load list of node ACL from disk (used in playitsafe()) nodeaccess = shelve.open('nodes.acl', writeback=True) # no need to configure anything else if the ffpb config section is missing if not bot.config.has_section('ffpb'): bot.memory['ffpb_in_setup'] = False return # open the git repository containing the peers files if not bot.config.ffpb.peers_directory is None: peers_repo = git.Repo(bot.config.ffpb.peers_directory) assert peers_repo.bare == False # if configured, start the messaging server if int(bot.config.ffpb.msg_enable) == 1: host = "localhost" port = 2342 if not bot.config.ffpb.msg_host is None: host = bot.config.ffpb.msg_host if not bot.config.ffpb.msg_port is None: port = int(bot.config.ffpb.msg_port) msgserver = ThreadingTCPServer((host,port), MsgHandler) msgserver.bot = bot ip, port = msgserver.server_address print("Messaging server listening on {}:{}".format(ip,port)) msgserver_thread = threading.Thread(target=msgserver.serve_forever) msgserver_thread.daemon = True msgserver_thread.start() # initially fetch ALFRED data alfred_method = bot.config.ffpb.alfred_method if not 'alfred_data' in bot.memory: bot.memory['alfred_data'] = {} if not 'alfred_update' in bot.memory: bot.memory['alfred_update'] = datetime.datetime(1970,1,1,23,42) ffpb_updatealfred(bot) # signal end of setup routine bot.memory['ffpb_in_setup'] = False def shutdown(bot): global msgserver, nodeaccess # store node acl if not nodeaccess is None: nodeaccess.sync() nodeaccess.close() nodeaccess = None # store seen nodes if 'seen_nodes' in bot.memory and bot.memory['seen_nodes'] != None: bot.memory['seen_nodes'].close() bot.memory['seen_nodes'] = None del(bot.memory['seen_nodes']) # shutdown messaging server if not msgserver is None: msgserver.shutdown() print("Closed messaging server.") msgserver = None @willie.module.commands("help") @willie.module.commands("hilfe") @willie.module.commands("man") def ffpb_help(bot, trigger): """Display commony ulsed functions.""" functions = { "!ping ": "Prüfe ob der Knoten erreichbar ist.", "!status": "Aktuellen Status des Netzwerks (insb. Anzahl Knoten und Clients) ausgegeben.", "!info ": "Allgemeine Information zu dem Knoten anzeigen.", "!link ": "MAC-Adresse und Link zur Status-Seite des Knotens anzeigen.", "!exec-on-peer ": "Befehl auf dem Knoten ausführen (nur möglich bei eigenen Knoten oder als Admin, in beiden Fällen auch nur wenn der SSH-Key des Bots hinterlegt wurde)", "!mesh ": "Zeige Mesh-Partner eines Knotens", } param = trigger.group(2) if param is None: bot.say("Funktionen: " + str.join(", ", sorted(functions.keys()))) return if param.startswith("!"): param = param[1:] for fun in functions.keys(): if fun.startswith("!" + param + " "): bot.say("Hilfe zu '" + fun + "': " + functions[fun]) return bot.say("Allgemeine Hilfe gibt's mit !help - ohne Parameter.") def playitsafe(bot, trigger, botadmin=False, admin_channel=False, via_channel=False, via_privmsg=False, need_op=False, node=None, reply_directly=True, debug_user=None, debug_ignorebotadmin=False): """helper: checks that the triggering user has the necessary rights Returns true if everything is okay. If it's not, a reply is send via the bot and false is returned. """ if via_channel and via_privmsg: raise Exception('Der Entwickler ist ein dummer, dummer Junge (playitsafe hat via_channel und via_privmsg gleichzeitig gesetzt).') user = trigger.nick if debug_user is None else debug_user user = user.lower() # botadmin: you need to be configured as a bot admin if botadmin and not trigger.admin: if reply_directly: bot.say('Du brauchst Super-Kuh-Kräfte um dieses Kommando auszuführen.') return False # via_channel: the request must not be a private conversation if via_channel and trigger.is_privmsg: if reply_directly: bot.say('Bitte per Channel - mehr Transparenz wagen und so!') return False # via_privmsg: the request must be a private conversation if via_privmsg and not trigger.is_privmsg: if reply_directly: bot.say('Solche Informationen gibt es nur per PM, da bin ich ja schon ein klein wenig sensibel ...') return False # need_op: if the message is in a channel, check that the user has OP there if need_op and (not trigger.is_privmsg) and (not user in bot.ops[trigger.sender]): if reply_directly: bot.say('Keine Zimtschnecke, keine Kekse.') return False # node: check that the user is whitelisted (or is admin) if not node is None and (debug_ignorebotadmin or not trigger.admin): acluser = [ x for x in nodeaccess if x.lower() == user ] acluser = acluser[0] if len(acluser) == 1 else None if nodeaccess is None or acluser is None: if reply_directly: bot.reply('You! Shall! Not! Access!') return False nodeid = node['node_id'] if 'node_id' in node else None matched = False for x in nodeaccess[acluser]: if x == nodeid or fnmatch(node['hostname'], x): matched = True break if not matched: if reply_directly: bot.reply('Mach das doch bitte auf deinen Knoten, kthxbye.') return False return True @willie.module.commands('nodeacl') def ffpb_nodeacl(bot, trigger): """Configure ACL for nodes.""" if not playitsafe(bot, trigger, botadmin=True): # the check function already gives a bot reply, just exit here return # ensure the user gave arguments (group 2 is the concatenation of all following groups) if trigger.group(2) is None or len(trigger.group(2)) == 0: bot.say('Sag doch was du willst ... einmal mit Profis arbeiten, ey -.-') return # read additional arguments cmd = trigger.group(3).lower() if cmd == 'list': user = trigger.group(4) if user is None: bot.say('ACLs gesetzt für die User: ' + ', '.join([x for x in nodeaccess])) return user = user.lower() uid = [ x for x in nodeaccess if x.lower() == user ] if len(uid) == 0: bot.say('Für \'{0}\' ist keine Node ACL gesetzt.'.format(user)) return bot.say('Node ACL für \'{0}\' = \'{1}\''.format(uid[0], '\', \''.join(nodeaccess[uid[0]]))) return if cmd in [ 'add', 'del', 'check' ]: user = trigger.group(4) value = trigger.group(5) if user is None or value is None: bot.say('Du bist eine Pappnase - User und Knoten, bitte.') return user = str(user) print('NodeACL ' + cmd + ' \'' + value + '\' for user \'' + user + '\'') uid = [ x for x in nodeaccess if x == user or x.lower() == user ] if cmd == 'add': uid = uid[0] if len(uid) > 0 else user if not uid in nodeaccess: nodeaccess[uid] = [] if not value in nodeaccess[uid]: nodeaccess[uid].append(value) bot.say('201 nodeACL \'{0}\' +\'{1}\''.format(uid, value)) else: bot.say('304 nodeACL \'{0}\' contains \'{1}\''.format(uid, value)) elif cmd == 'del': if len(uid) == 0: bot.say('404 nodeACL \'{0}\''.format(uid)) return if value in nodeaccess[uid]: nodeaccess[uid].remove(value) bot.say('200 nodeACL \'{0}\' -\'{1}\''.format(uid, value)) else: bot.say('404 nodeACL \'{0}\' does not contain \'{1}\''.format(uid, value)) elif cmd == 'check': if len(uid) == 0: bot.say('Nope, keine ACL gesetzt.') return node = ffpb_findnode(value) if node is None: bot.say('Nope, kein Plan was für ein Knoten das ist.') return result = playitsafe(bot, trigger, debug_user=uid[0], debug_ignorebotadmin=True, node=node, reply_directly=False) if result == True: bot.say('Jupp.') elif result == False: bot.say('Nope.') else: bot.say('Huh? result=' + str(result)) return bot.say('Unbekanntes Kommando. Probier "list [user]", "add user value" oder "del user value". Value kann node_id oder hostname-Maske sein.') def ffpb_ensurenodeid(nodedata): if 'node_id' in nodedata: return nodedata # derive node's id nodeid = nodedata['network']['mac'].replace(':','') if 'network' in nodedata and 'mac' in nodedata['network'] else None # assemble extended data result = { 'node_id': nodeid } for key in nodedata: result[key] = nodedata[key] return result def ffpb_findnode(name, alfred_data = None): """helper: try to identify the node the user meant by the given name""" # no name, no node if name is None or len(name) == 0: return None name = str(name).strip() names = {} if not alfred_data is None: # try to match MAC m = re.search("^([0-9a-fA-F][0-9a-fA-F]:){5}[0-9a-fA-F][0-9a-fA-F]$", name) if (not m is None): mac = m.group(0).lower() if mac in alfred_data: return ffpb_ensurenodeid(alfred_data[mac]) # try to find alias MAC in ALFRED data for nodeid in alfred_data: node = alfred_data[nodeid] if "network" in node: if "mac" in node["network"] and node["network"]["mac"].lower() == mac: return ffpb_ensurenodeid(node) if "mesh_interfaces" in node["network"]: for mim in node["network"]["mesh_interfaces"]: if mim.lower() == mac: return ffpb_ensurenodeid(node) nodeid = mac.replace(':','').lower() return { 'nodeid': nodeid, 'hostname': '?-' + nodeid, 'network': { 'addresses': [ mac2ipv6(mac, 'fdca:ffee:ff12:132:') ], 'mac': mac, }, 'hardware': { 'model': 'derived-from-mac' }, } # look through the ALFRED peers for nodeid in alfred_data: node = alfred_data[nodeid] if 'hostname' in node: h = node['hostname'] if h.lower() == name.lower(): return node else: names[h] = nodeid # not found in ALFRED data -> try peers_repo if not peers_repo is None: peer_name = None peer_mac = None peer_file = None for b in peers_repo.heads.master.commit.tree.blobs: if b.name.lower() == name.lower(): peer_name = b.name peer_file = b.abspath break if (not peer_file is None) and os.path.exists(peer_file): peerfile = open(peer_file, "r") for line in peerfile: if line.startswith("# MAC:"): peer_mac = line[6:].strip() peerfile.close() if not (peer_mac is None): return { 'node_id': peer_mac.replace(':', ''), 'hostname': peer_name, 'network': { 'addresses': [ mac2ipv6(peer_mac, 'fdca:ffee:ff12:132:') ], 'mac': peer_mac }, 'hardware': { 'model': 'derived-from-vpnkeys' }, } # do a similar name lookup in the ALFRED data if not alfred_data is None: possibilities = difflib.get_close_matches(name, [ x for x in names ], cutoff=0.75) print('findnode: Fuzzy matching \'{0}\' got {1} entries: {2}'.format(name, len(possibilities), ', '.join(possibilities))) if len(possibilities) == 1: # if we got exactly one candidate that might be it return ffpb_ensurenodeid(alfred_data[names[possibilities[0]]]) # none of the above was able to identify the requested node return None def ffpb_findnode_from_botparam(bot, name, ensure_recent_alfreddata = True): """helper: call ffpb_findnode() and give common answers via bot if nothing has been found""" if (name is None or len(name) == 0): if not bot is None: bot.reply("Grün.") return None alfred_data = get_alfred_data(bot, ensure_recent_alfreddata) if ensure_recent_alfreddata and alfred_data is None: if not bot is None: bot.say("Informationen sind ausverkauft bzw. veraltet, daher sage ich mal lieber nichts zu '" + name + "'.") return None node = ffpb_findnode(name, alfred_data) if node is None: if not bot is None: bot.say("Kein Plan wer oder was mit '" + name + "' gemeint ist :(") return node def mac2ipv6(mac, prefix=None): """Calculate IPv6 address from given MAC, optionally replacing the fe80:: prefix with a given one.""" result = str(netaddr.EUI(mac).ipv6_link_local()) if (not prefix is None) and (result.startswith("fe80::")): result = prefix + result[6:] return result @willie.module.interval(30) def ffpb_updatealfred(bot): """Aktualisiere ALFRED-Daten""" if alfred_method is None or alfred_method == "None": return updated = None if alfred_method == "exec": rawdata = subprocess.check_output(['alfred-json', '-z', '-r', '158']) updated = datetime.datetime.now() elif alfred_method.startswith("http"): try: rawdata = urllib2.urlopen(alfred_method) except: print("Failed to download ALFRED data.") return updated = datetime.datetime.fromtimestamp(mktime_tz(rawdata.info().getdate_tz("Last-Modified"))) else: print("Unknown ALFRED data method '", alfred_method, "', cannot load new data.", sep="") alfred_data = None return try: alfred_data = json.load(rawdata) #print("Fetched new ALFRED data:", len(alfred_data), "entries") except ValueError as e: print("Failed to parse ALFRED data: " + str(e)) return bot.memory['alfred_data'] = alfred_data bot.memory['alfred_update'] = updated seen_nodes = bot.memory['seen_nodes'] if 'seen_nodes' in bot.memory else None if not seen_nodes is None: new = [] for nodeid in alfred_data: nodeid = str(nodeid) if not nodeid in seen_nodes: seen_nodes[nodeid] = updated new.append((nodeid,alfred_data[nodeid]['hostname'])) print('First time seen: ' + str(nodeid)) if len(new) > 0 and not bot.memory['ffpb_in_setup']: action_msg = None if len(new) == 1: action_msg = random.choice(( 'bemerkt den neuen Knoten {0}', 'entdeckt {0}', 'reibt sich die Augen und erblickt einen verpackungsfrischen Knoten {0}', u'heißt {0} im Mesh willkommen', 'freut sich, dass {0} aufgetaucht ist', 'traut seinen Augen kaum. {0} sagt zum ersten Mal: Hallo Freifunk Paderborn', u'sieht die ersten Herzschläge von {0}', u'stellt einen großen Pott Heißgetränk zu {0} und fragt ob es hier Meshpartner gibt.', )).format('\'' + str(new[0][1]) + '\'') else: action_msg = random.choice(( 'bemerkt die neuen Knoten {0} und {1}', 'hat {0} und {1} entdeckt', 'bewundert {0} sowie {1}', 'freut sich, dass {0} und {1} nun auch online sind', u'heißt {0} und {1} im Mesh willkommen', 'fragt sich ob die noch jungen Herzen von {0} und {1} synchron schlagen', )).format('\'' + '\', \''.join([ str(x[1]) for x in new[0:-1] ]) + '\'', '\'' + str(new[-1][1]) + '\'') action_target = bot.config.ffpb.msg_target bot.msg(action_target, '\x01ACTION %s\x01' % action_msg) def get_alfred_data(bot, ensure_not_outdated=True): """Retrieves the stored alfred_data and optionally checks that it has been updated no more than 5 minutes ago.""" alfred_data = bot.memory['alfred_data'] if 'alfred_data' in bot.memory else None alfred_update = bot.memory['alfred_update'] if 'alfred_update' in bot.memory else 0 if alfred_data is None: return None if ensure_not_outdated: timeout = datetime.datetime.now() - datetime.timedelta(minutes=5) is_outdated = timeout > alfred_update #print("ALFRED outdated? {0} (timeout={1} vs. lastupdate={2})".format(is_outdated, timeout, alfred_update)) if is_outdated: return None return alfred_data def ffpb_get_batcave_nodefield(nodeid, field): """Query the given field for the given nodeid from the BATCAVE.""" raw_data = None try: # query BATCAVE for node's field raw_data = urllib2.urlopen('http://[fdca:ffee:ff12:a255::253]:8888/node/{0}/{1}'.format(nodeid, field)) except Exception as err: print('Failed to contact BATCAVE for \'{0}\'->\'{1}\': {2}'.format(nodeid, field, err)) return None try: return json.load(raw_data) except: print('Could not parse BATCAVE\'s response as JSON for \'{0}\'->\'{1}\''.format(nodeid, field)) return None @willie.module.commands('debug-alfred') def ffpb_debug_alfred(bot, trigger): """Show statistics of available ALFRED data.""" # must be called via private message by a bot admin if not playitsafe(bot, trigger, botadmin=True, via_privmsg=True): return alfred_data = get_alfred_data(bot) if alfred_data is None: bot.say("Keine ALFRED-Daten vorhanden.") else: bot.say("ALFRED Daten: count={0} lastupdate={1}".format(len(alfred_data), bot.memory['alfred_update'])) @willie.module.interval(60) def ffpb_updatepeers(bot): """Refresh list of peers and message the diff.""" if peers_repo is None: print('WARNING: peers_repo is None') return old_head = peers_repo.head.commit peers_repo.remotes.origin.pull() new_head = peers_repo.head.commit if new_head != old_head: print('git pull: from ' + str(old_head) + ' to ' + str(new_head)) added = [] changed = [] renamed = [] deleted = [] for f in old_head.diff(new_head): if f.new_file: added.append(f.b_blob.name) elif f.deleted_file: deleted.append(f.a_blob.name) elif f.renamed: renamed.append([f.rename_from, f.rename_to]) else: changed.append(f.a_blob.name) response = "Knoten-Update (VPN +{0} %{1} -{2}): ".format(len(added), len(renamed)+len(changed), len(deleted)) for f in added: response += " +'{}'".format(f) for f in changed: response += " %'{}'".format(f) for f in renamed: response += " '{}'->'{}'".format(f[0],f[1]) for f in deleted: response += " -'{}'".format(f) bot.msg(bot.config.ffpb.msg_target, response) def ffpb_fetch_stats(bot, url, memoryid): """Fetch a ffmap-style nodes.json from the given URL and store it in the bot's memory.""" response = urllib2.urlopen(url) data = json.load(response) nodes_active = 0 nodes_total = 0 clients_count = 0 for node in data['nodes']: if node['flags']['gateway'] or node['flags']['client']: continue nodes_total += 1 if node['flags']['online']: nodes_active += 1 if 'legacy' in node['flags'] and node['flags']['legacy']: clients_count -= 1 for link in data['links']: if link['type'] == 'client': clients_count += 1 if not memoryid in bot.memory: bot.memory[memoryid] = { } stats = bot.memory[memoryid] stats["fetchtime"] = time.time() stats["nodes_active"] = nodes_active stats["nodes_total"] = nodes_total stats["clients"] = clients_count return (nodes_active, nodes_total, clients_count) def pretty_date(time=False): """ Get a datetime object or a int() Epoch timestamp and return a pretty string like 'an hour ago', 'Yesterday', '3 months ago', 'just now', etc """ from datetime import datetime now = datetime.now() compare = None if type(time) is int: compare = datetime.fromtimestamp(time) elif type(time) is float: compare = datetime.fromtimestamp(int(time)) elif isinstance(time,datetime): compare = time elif not time: compare = now diff = now - compare second_diff = diff.seconds day_diff = diff.days if day_diff < 0: return '' if day_diff == 0: if second_diff < 10: return "gerade eben" if second_diff < 60: return "vor " + str(second_diff) + " Sekunden" if second_diff < 120: return "vor einer Minute" if second_diff < 3600: return "vor " + str(second_diff / 60) + " Minuten" if second_diff < 7200: return "vor einer Stunde" if second_diff < 86400: return "vor " + str(second_diff / 3600) + " Stunden" if day_diff == 1: return "gestern" if day_diff < 7: return "vor " + str(day_diff) + " Tagen" return "am " + compare.strftime('%d.%m.%Y um %H:%M Uhr') @willie.module.commands('ping') def ffpb_ping(bot, trigger=None, target_name=None, reply_directly=True): """Ping the given node""" # identify node or bail out if target_name is None: target_name = trigger.group(2) node = ffpb_findnode_from_botparam(bot, target_name, ensure_recent_alfreddata=False) if node is None: return None # get the first non-linklocal address from the node target = [x for x in node["network"]["addresses"] if not x.lower().startswith("fe80:")][0] target_alias = node["hostname"] # execute the actual ping and reply the result print("pinging '{0}' at {1} ...".format(target_name, target)) result = os.system('ping6 -c 2 -W 1 ' + target + ' >/dev/null') if result == 0: print("ping to '{0}' succeeded".format(target_name)) if reply_directly: bot.say('Knoten "' + target_alias + '" antwortet \o/') return True elif result == 1 or result == 256: print("ping to '{0}' failed".format(target_name)) if reply_directly: bot.say('Keine Antwort von "' + target_alias + '" :-(') return False else: print("ping to '{0}' broken: result='{1}'".format(target_name, result)) if reply_directly: bot.say('Uh oh, irgendwas ist kaputt. Chef, ping result = ' + str(result) + ' - darf ich das essen?') return None @willie.module.commands('mesh') def ffpb_nodemesh(bot, trigger): """Display mesh partners of the given node.""" # identify node or bail out target_name = trigger.group(2) node = ffpb_findnode_from_botparam(bot, target_name, ensure_recent_alfreddata=False) if node is None: return None # derive node's id nodeid = node['node_id'] if 'node_id' in node else None if nodeid is None: msg = 'Mist, ich habe gerade den Zettel verlegt auf dem die Node-ID von \'{0}\' steht, bitte frag später noch einmal.' bot.say(msg.format(node['hostname'] if 'hostname' in node else target_name)) return # query BATCAVE for node's neighbours (result is a list of MAC addresses) cave_result = ffpb_get_batcave_nodefield(nodeid, 'neighbours') # query BATCAVE for neighbour's names d = '&'.join([ str(n) for n in cave_result ]) req = urllib2.urlopen('http://[fdca:ffee:ff12:a255::253]:8888/idmac2name', d) # filter out duplicate names neighbours = set() for n in req: ident,name = n.strip().split('=') neighbours.add(name) neighbours = [ x for x in neighbours ] # respond to the user if len(neighbours) == 0: bot.say(u'{0} hat keinen Mesh-Partner *schnüff*'.format(node['hostname'])) elif len(neighbours) == 1: bot.say(u'{0} mesht mit \'{1}\''.format(node['hostname'], neighbours[0])) else: bot.say('{0} mesht mit \'{1}\' und \'{2}\''.format(node['hostname'], '\', \''.join(neighbours[:-1]), neighbours[-1])) @willie.module.commands('exec-on-peer') def ffpb_remoteexec(bot, trigger): """Remote execution on the given node""" bot_params = trigger.group(2).split(' ',1) if len(bot_params) != 2: bot.say('Wenn du nicht sagst wo mach ich remote execution bei dir!') bot.say('Tipp: !exec-on-peer ') return target_name = bot_params[0] target_cmd = bot_params[1] # identify requested node or bail out node = ffpb_findnode_from_botparam(bot, target_name, ensure_recent_alfreddata=False) if node is None: return # check ACL if not playitsafe(bot, trigger, via_channel=True, node=node): return # use the node's first non-linklocal address target = [x for x in node["network"]["addresses"] if not x.lower().startswith("fe80:")][0] target_alias = node["hostname"] # assemble SSH command cmd = 'ssh -6 -l root ' + target + ' -- "' + target_cmd + '"' print("REMOTE EXEC = " + cmd) try: # call SSH result = subprocess.check_output(['ssh', '-6n', '-l', 'root', '-o', 'BatchMode=yes', '-o','StrictHostKeyChecking=no', target, target_cmd], stderr=subprocess.STDOUT, shell=False) # fetch results and sent at most 8 of them as response lines = str(result).splitlines() if len(lines) == 0: bot.say('exec-on-peer(' + target_alias + '): No output') return msg = 'exec-on-peer(' + target_alias + '): ' + str(len(lines)) + ' Zeilen' if len(lines) > 8: msg += ' (zeige max. 8)' bot.say(msg + ':') for line in lines[0:8]: bot.say(line) except subprocess.CalledProcessError as e: bot.say('Fehler '+str(e.returncode)+' bei exec-on-peer('+target_alias+'): ' + e.output)