Andreas Wrede
381 lines
11 KiB
Plaintext
381 lines
11 KiB
Plaintext
"""
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host and connection class shared between hbd and
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the websit's heartbeat.py
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"""
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import time
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import json
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import copy
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import queue
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num = 0
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MAXRTTS = 10
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DEBUG = 2
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def log(host, m):
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if DEBUG:
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print("class log: %s %s" % (host, m))
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class Connection:
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# map of addrs to names
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htab = {}
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UNKNOWN = "unknown"
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UP = "up"
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DOWN = "down"
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OVERDUE = "overdue"
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def __init__(self, host, cid, addr, afam):
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self.host = host
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self.cid = cid
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if addr[0:7] == "::ffff:":
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addr = addr[7:]
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self.addr = addr
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self.afam = afam
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self.rtts = [0]
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self.lastbeat = time.time()
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self.statetime = self.lastbeat
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self.deltastatetime = "computed"
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self.state = Connection.UNKNOWN
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if host:
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Connection.htab[addr] = self.host.name
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if self.host.isDynDns():
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log(self.host.name, "dns update %s" % self.addr)
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Host.dnsQ.put((self.host.name, self.addr))
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def registerDns(self):
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Host.dnsQ.put((self.host.name, self.addr))
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def clearstate(self):
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d = {}
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d["addr"] = ""
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d["rtt"] = ""
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d["lastbeat"] = ""
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d["state"] = ""
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d["statetime"] = ""
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d["deltastatetime"] = ""
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d["rttstate"] = ""
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return d
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def statedict(self, Null=False):
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d = self.clearstate()
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now = time.time()
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if not Null:
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d["addr"] = self.addr
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if self.rtts[-1]:
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d["rtt"] = "%0.1f" % self.rtts[-1]
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elif self.state == Connection.UNKNOWN:
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d["rtt"] = ""
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else:
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d["rtt"] = "?"
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d["lastbeat"] = self.lastbeat
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if self.state == Connection.OVERDUE:
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d["state"] = "<b>%s</b>" % self.state
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else:
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d["state"] = self.state
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if self.state == Connection.UP:
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d["rttstate"] = d["rtt"]
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elif self.state == Connection.OVERDUE:
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d["rttstate"] = ""
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else:
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d["rttstate"] = d["state"]
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d["statetime"] = time.strftime(
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"%Y-%m-%d %H:%M:%S", time.localtime(self.statetime)
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)
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delta = now - self.statetime
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if self.state == Connection.UNKNOWN:
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d["deltastatetime"] = ""
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elif delta > 86400:
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# d['deltastatetime'] = time.strftime("%d %H:%M:%S", time.gmtime(delta))
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d["deltastatetime"] = "%0.1f days" % (delta / 86400.0)
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elif delta > 3600:
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# d['deltastatetime'] = time.strftime("%H:%M:%S", time.gmtime(delta))
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d["deltastatetime"] = time.strftime("%k:%M hrs", time.gmtime(delta))
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# d['deltastatetime'] = "%0.1f hrs" % (delta / 3600.)
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elif delta > 60:
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# d['deltastatetime'] = time.strftime("%M:%S", time.gmtime(delta))
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d["deltastatetime"] = time.strftime("%M:%S mins", time.gmtime(delta))
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# d['deltastatetime'] = "%0.1f mins" % (delta / 60.)
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else:
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# d['deltastatetime'] = time.strftime("%S", time.gmtime(delta))
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d["deltastatetime"] = "%i secs" % (delta)
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if self.state == Connection.UNKNOWN and now - self.lastbeat > 86400 * 10:
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d = self.clearstate()
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return d
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def headerdict(self, afam):
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d = {}
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d["addr"] = "%s Addr" % afam
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d["rtt"] = "Latencey"
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d["lastbeat"] = "Last Contact"
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d["state"] = "State"
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d["statetime"] = "Last State"
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d["rttstate"] = "Reach"
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d["deltastatetime"] = "Last State"
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return d
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def jsons(self):
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return json.dumps(self.__dict__)
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# set new state, return number of secs in previous state
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def newstate(self, state, now, when=0):
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self.state = state
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delta = now - when
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s = delta - self.statetime
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self.statetime = delta
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return s
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def getstate(self):
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return self.state
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def newaddr(self, addr, rtt, now):
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self.lastbeat = now
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self.rtts.append(rtt)
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if len(self.rtts) > MAXRTTS:
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del self.rtts[0]
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if self.addr == addr:
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r = None
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else:
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r = "changed from %s to %s" % (self.addr, addr)
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try:
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del Connection.htab[self.addr]
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except:
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pass
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self.addr = addr
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Connection.htab[addr] = self.host.name
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if self.host.isDynDns():
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Host.dnsQ.put((self.host.name, self.addr))
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return r
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#
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class Host:
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# Table of Hosts
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hosts = {}
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dnsQ = queue.Queue()
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def __init__(self, name):
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global num
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self.name = name
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if name:
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num += 1
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Host.hosts[name] = self
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self.num = num
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self.dyn = False
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self.watched = False
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self.upcount = 0
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self.interval = 0
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self.doesack = -1
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self.cmds = []
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self.cver = 0
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self.connections = {}
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self.hdwcounts = [[0, 0], [0, 0], [0, 0]]
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def statedict(self):
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d = {}
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d["name"] = self.name
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if self.dyn:
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d["name"] += "*"
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if self.watched:
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d["name"] = "<b>%s</b>" % d["name"]
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d["dyn"] = str(self.dyn)
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d["ver"] = str(self.cver)
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d["num"] = self.num
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for c in ["IPv4", "IPv6"]:
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if c in self.connections:
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cs = self.connections[c].statedict()
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else:
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cs = ubConnection.statedict(True)
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for csv in cs:
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d["%s.%s" % (c, csv)] = cs[csv]
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return d
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def headerdict(self):
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d = {}
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d["name"] = "Name"
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d["dyn"] = "Dyn"
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d["ver"] = "Ver"
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d["num"] = "??"
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for c in ["IPv4", "IPv6"]:
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cs = ubConnection.headerdict(c)
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for csv in cs:
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d["%s.%s" % (c, csv)] = cs[csv]
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return d
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def registerDns(self):
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for af in self.connections:
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self.connections[af].registerDns()
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def stateinfo(self):
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ddict = {}
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for d in self.__dict__:
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if d == "connections":
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cl = []
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for c in self.connections:
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# dirty ugly hack: fix conn to host backpointer
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cld = copy.deepcopy(self.connections[c].__dict__)
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cld["host"] = cld["host"].name
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cl.append(cld)
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ddict[d] = cl
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else:
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ddict[d] = self.__dict__[d]
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return ddict
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def jsons(self):
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return json.dumps(self.stateinfo())
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def setcver(self, cver):
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self.cver = cver
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def isDynDns(self):
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return self.dyn
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def isIPv4(self, addr):
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if isinstance(addr, tuple):
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return addr[0].find(".") > 0
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else:
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return addr.find(".") > 0
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def conndata(self, cid, addr, rtt, now):
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if addr[0:7] == "::ffff:":
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addr = addr[7:]
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if self.isIPv4(addr):
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afam = "IPv4"
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else:
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afam = "IPv6"
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if afam not in self.connections:
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self.connections[afam] = Connection(self, cid, addr, afam)
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conn = self.connections[afam]
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res = conn.newaddr(addr, rtt, now)
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return conn, res
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# called when reloading class from pickle, add new fields here
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def fixup(self):
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for c in ["IPv4", "IPv6"]:
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if c in self.connections:
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addr = self.connections[c].addr
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if addr[0:7] == "::ffff:":
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addr = addr[7:]
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self.connections[c].addr = addr
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pass
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# def dispstate(self):
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# if self.state in ["down", "overdue"]:
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# state = "<b>%s</b>" % self.state
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# elif self.state in ["up", "UP"]:
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# state = ""
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# for x in list(self.connections.keys()):
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# try:
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# state += " %5.1f" % (self.connections[x].rtts[-1])
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# except:
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# state += " %5s" % (self.connections[x].rtts[-1])
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# elif self.state in ["unknown", "UNKNOWN"]:
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# state = ""
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# else:
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# state = "%s" % self.state
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# return state
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def dispstats(self):
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if self.doesack != -1:
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if self.upcount > 0:
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# return "(%0.1f%%) %s %s %s " % ((self.doesack * 100.0) / self.upcount, self.doesack, self.upcount, self.hdwcounts)
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r = ""
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for v in range(3):
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a, u = self.hdwcounts[v]
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if (self.upcount - u) != 0:
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vs = "%0.0f" % (
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100.0 - (((self.doesack - a) * 100.0) / (self.upcount - u))
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)
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if vs == "0":
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vs = ""
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else:
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vs = "-"
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r += '<td align="right">%s</td>' % vs
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return r
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else:
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return "<td>(%s)</td><td></td><td></td>" % (self.doesack)
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return '<td align="right">N/A</td><td></td<td></td>>'
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hostfields_long = [
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"name",
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"IPv4.addr",
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"IPv4.state",
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("IPv4.rtt", 'style="text-align: right;"'),
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("IPv4.statetime", 'style="text-align: right;"'),
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"IPv6.addr",
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"IPv6.state",
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("IPv6.rtt", 'style="text-align: right;"'),
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("IPv6.statetime", 'style="text-align: right;"'),
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"ver",
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]
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hostfields_short = [
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"name",
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("IPv4.rttstate", 'style="text-align: right;"'),
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("IPv4.deltastatetime", 'style="text-align: right;"'),
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("IPv6.rttstate", 'style="text-align: right;"'),
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("IPv6.deltastatetime", 'style="text-align: right;"'),
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]
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def gene(self, tag, v, attrib=None):
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if attrib:
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a = " %s" % attrib
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else:
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a = ""
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return "<%s%s>%s</%s>" % (tag, a, v, tag)
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def htmltable(self, tag, hd, short):
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if short:
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hostfields = Host.hostfields_short
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else:
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hostfields = Host.hostfields_long
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h = []
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for f in hostfields:
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if isinstance(f, tuple):
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h.append(self.gene(tag, hd[f[0]], f[1]))
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else:
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h.append(self.gene(tag, hd[f]))
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return self.gene("tr", "\n".join(h))
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def buildhosttable(self, short=False):
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if DEBUG > 1:
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print("DBG buildhosttable: start")
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res = []
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res.append('<table id="ntable" class="sortable">')
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res.append(ubHost.htmltable("th", ubHost.headerdict(), short))
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hosts_sorted = list(Host.hosts.keys())
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if len(hosts_sorted):
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hosts_sorted.sort()
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for h in hosts_sorted:
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res.append(ubHost.htmltable("td", Host.hosts[h].statedict(), short))
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res.append("</table>")
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if DEBUG > 1:
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print("DBG buildhosttable: %s" % res)
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return res
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def buildmsgtable(self, msgs):
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res = []
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le = max(40 - len(Host.hosts), 3)
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res.append("<h4>Log of Events</h4>")
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for m in msgs[len(msgs) - le:]:
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res.append("%s<BR>" % m)
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return res
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# create fake "unbound objects", remove in Python 3.0
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ubHost = Host(None)
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ubConnection = Connection(None, "", "", "")
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