+from binascii import b2a_hex
+import os, re
+
from twisted.internet import defer
from twisted.web2 import server, http, http_headers
+from twisted.python import log
from apt_dht_conf import config
from PeerManager import PeerManager
from HTTPServer import TopLevel
from MirrorManager import MirrorManager
+from Hash import HashObject
class AptDHT:
def __init__(self, dht):
+ log.msg('Initializing the main apt_dht application')
self.dht = dht
- self.http_server = TopLevel(config.defaults()['cache_dir'], self)
+ self.dht.loadConfig(config, config.get('DEFAULT', 'DHT'))
+ self.dht.join().addCallbacks(self.joinComplete, self.joinError)
+ self.http_server = TopLevel(config.get('DEFAULT', 'cache_dir'), self)
self.http_site = server.Site(self.http_server)
self.peers = PeerManager()
- self.mirrors = MirrorManager(config.defaults()['cache_dir'])
+ self.mirrors = MirrorManager(config.get('DEFAULT', 'cache_dir'), self)
+ self.my_addr = None
+ self.isLocal = re.compile('^(192\.168\.[0-9]{1,3}\.[0-9]{1,3})|'+
+ '(10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})|'+
+ '(172\.0?([1][6-9])|([2][0-9])|([3][0-1])\.[0-9]{1,3}\.[0-9]{1,3})|'+
+ '(127\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})$')
def getSite(self):
return self.http_site
-
- def check_freshness(self, path, modtime, resp):
- host, path = path.split('/',1)
- if not host:
- host, path = path.split('/',1)
- path = '/'+path
+
+ def joinComplete(self, addrs):
+ log.msg("got addrs: %r" % (addrs,))
- # Make sure a port is included for consistency
- if host.find(':') >= 0:
- host, port = host.split(':', 1)
- port = int(port)
- else:
- port = 80
+ try:
+ ifconfig = os.popen("/sbin/ifconfig |/bin/grep inet|"+
+ "/usr/bin/awk '{print $2}' | "+
+ "sed -e s/.*://", "r").read().strip().split('\n')
+ except:
+ ifconfig = []
+
+ # Get counts for all the non-local addresses returned
+ addr_count = {}
+ for addr in ifconfig:
+ if not self.isLocal.match(addr):
+ addr_count.setdefault(addr, 0)
+ addr_count[addr] += 1
- d = self.peers.get([(host, port, path)], "HEAD", modtime)
+ local_addrs = addr_count.keys()
+ if len(local_addrs) == 1:
+ self.my_addr = local_addrs[0]
+ log.msg('Found remote address from ifconfig: %r' % (self.my_addr,))
+
+ # Get counts for all the non-local addresses returned
+ addr_count = {}
+ port_count = {}
+ for addr in addrs:
+ if not self.isLocal.match(addr[0]):
+ addr_count.setdefault(addr[0], 0)
+ addr_count[addr[0]] += 1
+ port_count.setdefault(addr[1], 0)
+ port_count[addr[1]] += 1
+
+ # Find the most popular address
+ popular_addr = []
+ popular_count = 0
+ for addr in addr_count:
+ if addr_count[addr] > popular_count:
+ popular_addr = [addr]
+ popular_count = addr_count[addr]
+ elif addr_count[addr] == popular_count:
+ popular_addr.append(addr)
+
+ # Find the most popular port
+ popular_port = []
+ popular_count = 0
+ for port in port_count:
+ if port_count[port] > popular_count:
+ popular_port = [port]
+ popular_count = port_count[port]
+ elif port_count[port] == popular_count:
+ popular_port.append(port)
+
+ port = config.getint(config.get('DEFAULT', 'DHT'), 'PORT')
+ if len(port_count.keys()) > 1:
+ log.msg('Problem, multiple ports have been found: %r' % (port_count,))
+ if port not in port_count.keys():
+ log.msg('And none of the ports found match the intended one')
+ elif len(port_count.keys()) == 1:
+ port = port_count.keys()[0]
+ else:
+ log.msg('Port was not found')
+
+ if len(popular_addr) == 1:
+ log.msg('Found popular address: %r' % (popular_addr[0],))
+ if self.my_addr and self.my_addr != popular_addr[0]:
+ log.msg('But the popular address does not match: %s != %s' % (popular_addr[0], self.my_addr))
+ self.my_addr = popular_addr[0]
+ elif len(popular_addr) > 1:
+ log.msg('Found multiple popular addresses: %r' % (popular_addr,))
+ if self.my_addr and self.my_addr not in popular_addr:
+ log.msg('And none of the addresses found match the ifconfig one')
+ else:
+ log.msg('No non-local addresses found: %r' % (popular_addr,))
+
+ if not self.my_addr:
+ log.err(RuntimeError("Remote IP Address could not be found for this machine"))
+
+ def ipAddrFromChicken(self):
+ import urllib
+ ip_search = re.compile('\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}')
+ try:
+ f = urllib.urlopen("http://www.ipchicken.com")
+ data = f.read()
+ f.close()
+ current_ip = ip_search.findall(data)
+ return current_ip
+ except Exception:
+ return []
+
+ def joinError(self, failure):
+ log.msg("joining DHT failed miserably")
+ log.err(failure)
+
+ def check_freshness(self, path, modtime, resp):
+ log.msg('Checking if %s is still fresh' % path)
+ d = self.peers.get([path], "HEAD", modtime)
d.addCallback(self.check_freshness_done, path, resp)
return d
def check_freshness_done(self, resp, path, orig_resp):
- if resp.code == "304":
+ if resp.code == 304:
+ log.msg('Still fresh, returning: %s' % path)
return orig_resp
else:
+ log.msg('Stale, need to redownload: %s' % path)
return self.get_resp(path)
def get_resp(self, path):
d = defer.Deferred()
+ log.msg('Trying to find hash for %s' % path)
findDefer = self.mirrors.findHash(path)
- findDefer.addcallback(self.findHash_done, path, d)
+ findDefer.addCallbacks(self.findHash_done, self.findHash_error,
+ callbackArgs=(path, d), errbackArgs=(path, d))
+ findDefer.addErrback(log.err)
return d
+
+ def findHash_error(self, failure, path, d):
+ log.err(failure)
+ self.findHash_done(HashObject(), path, d)
- def findHash_done(self, (hash, size), path, d):
- if hash is None:
- host, path = path.split('/',1)
- if not host:
- host, path = path.split('/',1)
- path = '/'+path
+ def findHash_done(self, hash, path, d):
+ if hash.expected() is None:
+ log.msg('Hash for %s was not found' % path)
+ self.download_file([path], hash, path, d)
+ else:
+ log.msg('Found hash %s for %s' % (hash.hexexpected(), path))
+ # Lookup hash from DHT
+ key = hash.normexpected(bits = config.getint(config.get('DEFAULT', 'DHT'), 'HASH_LENGTH'))
+ lookupDefer = self.dht.getValue(key)
+ lookupDefer.addCallback(self.lookupHash_done, hash, path, d)
- # Make sure a port is included for consistency
- if host.find(':') >= 0:
- host, port = host.split(':', 1)
- port = int(port)
- else:
- port = 80
- getDefer = self.peers.get([(host, port, path)])
- getDefer.addCallback(d.callback)
-
\ No newline at end of file
+ def lookupHash_done(self, locations, hash, path, d):
+ if not locations:
+ log.msg('Peers for %s were not found' % path)
+ self.download_file([path], hash, path, d)
+ else:
+ log.msg('Found peers for %s: %r' % (path, locations))
+ # Download from the found peers
+ self.download_file(locations, hash, path, d)
+
+ def download_file(self, locations, hash, path, d):
+ getDefer = self.peers.get(locations)
+ getDefer.addCallback(self.mirrors.save_file, hash, path)
+ getDefer.addErrback(self.mirrors.save_error, path)
+ getDefer.addCallbacks(d.callback, d.errback)
+
+ def download_complete(self, hash, url, file_path):
+ assert file_path.startswith(config.get('DEFAULT', 'cache_dir'))
+ directory = file_path[:len(config.get('DEFAULT', 'cache_dir'))]
+ url_path = file_path[len(config.get('DEFAULT', 'cache_dir')):]
+ if url_path[0] == '/':
+ url_path = url_path[1:]
+ top_directory = url_path.split('/',1)[0]
+ url_path = url_path[len(top_directory):]
+ http_dir = os.path.join(directory, top_directory)
+ new_top = self.http_server.addDirectory(http_dir)
+ url_path = '/' + new_top + url_path
+ log.msg('now avaliable at %s: %s' % (url_path, url))
projects / quix0rs-apt-p2p.git / blobdiff