607 lines
23 KiB
Python
607 lines
23 KiB
Python
import os, json, logging, hashlib, re, time, string, random, sys, binascii, struct, socket, urllib, urllib2
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from lib.subtl.subtl import UdpTrackerClient
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from lib import bencode
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import gevent
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import util
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from Config import config
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from Peer import Peer
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from Worker import WorkerManager
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from Crypt import CryptHash
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from Debug import Debug
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from Content import ContentManager
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from SiteStorage import SiteStorage
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import SiteManager
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class Site:
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def __init__(self, address, allow_create=True):
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self.address = re.sub("[^A-Za-z0-9]", "", address) # Make sure its correct address
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self.address_short = "%s..%s" % (self.address[:6], self.address[-4:]) # Short address for logging
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self.log = logging.getLogger("Site:%s" % self.address_short)
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self.content = None # Load content.json
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self.peers = {} # Key: ip:port, Value: Peer.Peer
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self.peer_blacklist = SiteManager.peer_blacklist # Ignore this peers (eg. myself)
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self.last_announce = 0 # Last announce time to tracker
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self.worker_manager = WorkerManager(self) # Handle site download from other peers
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self.bad_files = {} # SHA512 check failed files, need to redownload {"inner.content": 1} (key: file, value: failed accept)
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self.content_updated = None # Content.js update time
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self.notifications = [] # Pending notifications displayed once on page load [error|ok|info, message, timeout]
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self.page_requested = False # Page viewed in browser
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self.storage = SiteStorage(self, allow_create=allow_create) # Save and load site files
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self.loadSettings() # Load settings from sites.json
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self.content_manager = ContentManager(self) # Load contents
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if not self.settings.get("auth_key"): # To auth user in site (Obsolete, will be removed)
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self.settings["auth_key"] = ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(24))
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self.log.debug("New auth key: %s" % self.settings["auth_key"])
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self.saveSettings()
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if not self.settings.get("wrapper_key"): # To auth websocket permissions
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self.settings["wrapper_key"] = ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(12))
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self.log.debug("New wrapper key: %s" % self.settings["wrapper_key"])
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self.saveSettings()
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self.websockets = [] # Active site websocket connections
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# Add event listeners
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self.addEventListeners()
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def __str__(self):
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return "Site %s" % self.address_short
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def __repr__(self):
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return "<%s>" % self.__str__()
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# Load site settings from data/sites.json
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def loadSettings(self):
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sites_settings = json.load(open("%s/sites.json" % config.data_dir))
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if self.address in sites_settings:
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self.settings = sites_settings[self.address]
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else:
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if self.address == config.homepage: # Add admin permissions to homepage
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permissions = ["ADMIN"]
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else:
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permissions = []
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self.settings = { "own": False, "serving": True, "permissions": permissions } # Default
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return
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# Save site settings to data/sites.json
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def saveSettings(self):
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sites_settings = json.load(open("%s/sites.json" % config.data_dir))
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sites_settings[self.address] = self.settings
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open("%s/sites.json" % config.data_dir, "w").write(json.dumps(sites_settings, indent=2, sort_keys=True))
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return
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# Max site size in MB
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def getSizeLimit(self):
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return self.settings.get("size_limit", config.size_limit)
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# Next size limit based on current size
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def getNextSizeLimit(self):
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size_limits = [10,20,50,100,200,500,1000,2000,5000,10000,20000,50000,100000]
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size = self.settings.get("size", 0)
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for size_limit in size_limits:
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if size*1.2 < size_limit*1024*1024:
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return size_limit
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return 999999
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# Download all file from content.json
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def downloadContent(self, inner_path, download_files=True, peer=None):
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s = time.time()
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self.log.debug("Downloading %s..." % inner_path)
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found = self.needFile(inner_path, update=self.bad_files.get(inner_path))
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content_inner_dir = self.content_manager.toDir(inner_path)
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if not found: return False # Could not download content.json
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self.log.debug("Got %s" % inner_path)
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changed = self.content_manager.loadContent(inner_path, load_includes=False)
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# Start download files
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file_threads = []
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if download_files:
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for file_relative_path in self.content_manager.contents[inner_path].get("files", {}).keys():
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file_inner_path = content_inner_dir+file_relative_path
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res = self.needFile(file_inner_path, blocking=False, update=self.bad_files.get(file_inner_path), peer=peer) # No waiting for finish, return the event
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if res != True: # Need downloading
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file_threads.append(res) # Append evt
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# Wait for includes download
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include_threads = []
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for file_relative_path in self.content_manager.contents[inner_path].get("includes", {}).keys():
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file_inner_path = content_inner_dir+file_relative_path
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include_thread = gevent.spawn(self.downloadContent, file_inner_path, download_files=download_files, peer=peer)
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include_threads.append(include_thread)
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self.log.debug("%s: Downloading %s includes..." % (inner_path, len(include_threads)))
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gevent.joinall(include_threads)
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self.log.debug("%s: Includes downloaded" % inner_path)
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self.log.debug("%s: Downloading %s files, changed: %s..." % (inner_path, len(file_threads), len(changed)))
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gevent.joinall(file_threads)
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self.log.debug("%s: All file downloaded in %.2fs" % (inner_path, time.time()-s))
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return True
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# Return bad files with less than 3 retry
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def getReachableBadFiles(self):
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if not self.bad_files: return False
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return [bad_file for bad_file, retry in self.bad_files.iteritems() if retry < 3]
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# Retry download bad files
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def retryBadFiles(self):
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for bad_file in self.bad_files.keys():
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self.needFile(bad_file, update=True, blocking=False)
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# Download all files of the site
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@util.Noparallel(blocking=False)
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def download(self, check_size=False):
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self.log.debug("Start downloading...%s" % self.bad_files)
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gevent.spawn(self.announce)
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if check_size: # Check the size first
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valid = downloadContent(download_files=False) # Just download content.json files
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if not valid: return False # Cant download content.jsons or size is not fits
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# Download everything
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found = self.downloadContent("content.json")
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self.checkModifications(0) # Download multiuser blind includes
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return found
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# Update worker, try to find client that supports listModifications command
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def updater(self, peers_try, queried, since):
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while 1:
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if not peers_try or len(queried) >= 3: # Stop after 3 successful query
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break
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peer = peers_try.pop(0)
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if not peer.connection and len(queried) < 2: peer.connect() # Only open new connection if less than 2 queried already
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if not peer.connection or peer.connection.handshake.get("rev",0) < 126: continue # Not compatible
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res = peer.listModified(since)
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if not res or not "modified_files" in res: continue # Failed query
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queried.append(peer)
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for inner_path, modified in res["modified_files"].iteritems(): # Check if the peer has newer files than we
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content = self.content_manager.contents.get(inner_path)
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if not content or modified > content["modified"]: # We dont have this file or we have older
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self.bad_files[inner_path] = self.bad_files.get(inner_path, 0)+1 # Mark as bad file
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gevent.spawn(self.downloadContent, inner_path) # Download the content.json + the changed files
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# Check modified content.json files from peers and add modified files to bad_files
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# Return: Successfully queried peers [Peer, Peer...]
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def checkModifications(self, since=None):
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peers_try = [] # Try these peers
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queried = [] # Successfully queried from these peers
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peers = self.peers.values()
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random.shuffle(peers)
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for peer in peers: # Try to find connected good peers, but we must have at least 5 peers
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if peer.findConnection() and peer.connection.handshake.get("rev",0) > 125: # Add to the beginning if rev125
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peers_try.insert(0, peer)
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elif len(peers_try) < 5: # Backup peers, add to end of the try list
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peers_try.append(peer)
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if since == None: # No since definied, download from last modification time-1day
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since = self.settings.get("modified", 60*60*24)-60*60*24
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self.log.debug("Try to get listModifications from peers: %s since: %s" % (peers_try, since))
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updaters = []
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for i in range(3):
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updaters.append(gevent.spawn(self.updater, peers_try, queried, since))
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gevent.joinall(updaters, timeout=5) # Wait 5 sec to workers
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time.sleep(0.1)
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self.log.debug("Queried listModifications from: %s" % queried)
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return queried
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# Update content.json from peers and download changed files
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# Return: None
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@util.Noparallel()
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def update(self, announce=False):
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self.content_manager.loadContent("content.json") # Reload content.json
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self.content_updated = None # Reset content updated time
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self.updateWebsocket(updating=True)
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if announce: self.announce()
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queried = self.checkModifications()
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if not queried: # Not found any client that supports listModifications
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self.log.debug("Fallback to old-style update")
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self.redownloadContents()
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if not self.settings["own"]: self.storage.checkFiles(quick_check=True) # Quick check files based on file size
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changed = self.content_manager.loadContent("content.json")
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if changed:
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for changed_file in changed:
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self.bad_files[changed_file] = self.bad_files.get(changed_file, 0)+1
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if self.bad_files:
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self.download()
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self.settings["size"] = self.content_manager.getTotalSize() # Update site size
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self.updateWebsocket(updated=True)
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# Update site by redownload all content.json
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def redownloadContents(self):
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# Download all content.json again
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content_threads = []
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for inner_path in self.content_manager.contents.keys():
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content_threads.append(self.needFile(inner_path, update=True, blocking=False))
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self.log.debug("Waiting %s content.json to finish..." % len(content_threads))
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gevent.joinall(content_threads)
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# Publish worker
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def publisher(self, inner_path, peers, published, limit, event_done=None):
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file_size = self.storage.getSize(inner_path)
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body = self.storage.read(inner_path)
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while 1:
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if not peers or len(published) >= limit:
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if event_done: event_done.set(True)
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break # All peers done, or published engouht
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peer = peers.pop(0)
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if peer.connection and peer.connection.last_ping_delay: # Peer connected
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timeout = timeout = 5+int(file_size/1024)+peer.connection.last_ping_delay # Timeout: 5sec + size in kb + last_ping
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else:
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timeout = timeout = 5+int(file_size/1024) # Timeout: 5sec + size in kb
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result = {"exception": "Timeout"}
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for retry in range(2):
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try:
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with gevent.Timeout(timeout, False):
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result = peer.request("update", {
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"site": self.address,
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"inner_path": inner_path,
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"body": body,
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"peer": (config.ip_external, config.fileserver_port)
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})
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if result: break
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except Exception, err:
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result = {"exception": Debug.formatException(err)}
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if result and "ok" in result:
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published.append(peer)
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self.log.info("[OK] %s: %s" % (peer.key, result["ok"]))
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else:
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if result == {"exception": "Timeout"}: peer.onConnectionError()
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self.log.info("[FAILED] %s: %s" % (peer.key, result))
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# Update content.json on peers
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@util.Noparallel()
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def publish(self, limit=5, inner_path="content.json"):
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self.log.info( "Publishing to %s/%s peers..." % (min(len(self.peers), limit), len(self.peers)) )
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published = [] # Successfully published (Peer)
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publishers = [] # Publisher threads
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peers = self.peers.values()
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if not peers: return 0 # No peers found
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random.shuffle(peers)
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event_done = gevent.event.AsyncResult()
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for i in range(min(len(self.peers), limit, 5)): # Max 5 thread
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publisher = gevent.spawn(self.publisher, inner_path, peers, published, limit, event_done)
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publishers.append(publisher)
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event_done.get() # Wait for done
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if len(published) < min(len(self.peers), limit): time.sleep(0.2) # If less than we need sleep a bit
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if len(published) == 0: gevent.joinall(publishers) # No successful publish, wait for all publisher
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# Make sure the connected passive peers got the update
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passive_peers = [peer for peer in peers if peer.connection and not peer.connection.closed and peer.key.endswith(":0") and peer not in published] # Every connected passive peer that we not published to
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for peer in passive_peers:
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gevent.spawn(self.publisher, inner_path, passive_peers, published, limit=10)
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self.log.info("Successfuly published to %s peers, publishing to %s more passive peers" % (len(published), len(passive_peers)) )
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return len(published)
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# Check and download if file not exits
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def needFile(self, inner_path, update=False, blocking=True, peer=None, priority=0):
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if self.storage.isFile(inner_path) and not update: # File exits, no need to do anything
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return True
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elif self.settings["serving"] == False: # Site not serving
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return False
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else: # Wait until file downloaded
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self.bad_files[inner_path] = True # Mark as bad file
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if not self.content_manager.contents.get("content.json"): # No content.json, download it first!
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self.log.debug("Need content.json first")
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gevent.spawn(self.announce)
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if inner_path != "content.json": # Prevent double download
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task = self.worker_manager.addTask("content.json", peer)
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task.get()
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self.content_manager.loadContent()
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if not self.content_manager.contents.get("content.json"): return False # Content.json download failed
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if not inner_path.endswith("content.json") and not self.content_manager.getFileInfo(inner_path): # No info for file, download all content.json first
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self.log.debug("No info for %s, waiting for all content.json" % inner_path)
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success = self.downloadContent("content.json", download_files=False)
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if not success: return False
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if not self.content_manager.getFileInfo(inner_path): return False # Still no info for file
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task = self.worker_manager.addTask(inner_path, peer, priority=priority)
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if blocking:
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return task.get()
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else:
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return task
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# Add or update a peer to site
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def addPeer(self, ip, port, return_peer = False):
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if not ip: return False
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if (ip, port) in self.peer_blacklist: return False # Ignore blacklist (eg. myself)
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key = "%s:%s" % (ip, port)
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if key in self.peers: # Already has this ip
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#self.peers[key].found()
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if return_peer: # Always return peer
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return self.peers[key]
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else:
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return False
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else: # New peer
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peer = Peer(ip, port, self)
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self.peers[key] = peer
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return peer
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# Gather peer from connected peers
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@util.Noparallel(blocking=False)
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def announcePex(self, query_num=2, need_num=5):
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peers = [peer for peer in self.peers.values() if peer.connection and peer.connection.connected] # Connected peers
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if len(peers) == 0: # Small number of connected peers for this site, connect to any
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self.log.debug("Small number of peers detected...query all of peers using pex")
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peers = self.peers.values()
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need_num = 10
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random.shuffle(peers)
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done = 0
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added = 0
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for peer in peers:
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if peer.connection: # Has connection
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if "port_opened" in peer.connection.handshake: # This field added recently, so probably has has peer exchange
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res = peer.pex(need_num=need_num)
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else:
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res = False
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else: # No connection
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res = peer.pex(need_num=need_num)
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if type(res) == int: # We have result
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done += 1
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added += res
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if res:
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self.worker_manager.onPeers()
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self.updateWebsocket(peers_added=res)
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if done == query_num: break
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self.log.debug("Queried pex from %s peers got %s new peers." % (done, added))
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# Gather peers from tracker
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# Return: Complete time or False on error
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def announceTracker(self, protocol, ip, port, fileserver_port, address_hash, my_peer_id):
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s = time.time()
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if protocol == "udp": # Udp tracker
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if config.disable_udp: return False # No udp supported
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tracker = UdpTrackerClient(ip, port)
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tracker.peer_port = fileserver_port
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try:
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tracker.connect()
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tracker.poll_once()
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tracker.announce(info_hash=address_hash, num_want=50)
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back = tracker.poll_once()
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peers = back["response"]["peers"]
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except Exception, err:
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return False
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else: # Http tracker
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params = {
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'info_hash': binascii.a2b_hex(address_hash),
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'peer_id': my_peer_id, 'port': fileserver_port,
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'uploaded': 0, 'downloaded': 0, 'left': 0, 'compact': 1, 'numwant': 30,
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'event': 'started'
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}
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req = None
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try:
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url = "http://"+ip+"?"+urllib.urlencode(params)
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# Load url
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with gevent.Timeout(10, False): # Make sure of timeout
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req = urllib2.urlopen(url, timeout=8)
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response = req.read()
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req.fp._sock.recv=None # Hacky avoidance of memory leak for older python versions
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req.close()
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req = None
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if not response:
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self.log.debug("Http tracker %s response error" % url)
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return False
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# Decode peers
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peer_data = bencode.decode(response)["peers"]
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response = None
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peer_count = len(peer_data) / 6
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peers = []
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for peer_offset in xrange(peer_count):
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off = 6 * peer_offset
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peer = peer_data[off:off + 6]
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addr, port = struct.unpack('!LH', peer)
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peers.append({"addr": socket.inet_ntoa(struct.pack('!L', addr)), "port": port})
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except Exception, err:
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self.log.debug("Http tracker %s error: %s" % (url, err))
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if req:
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req.close()
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req = None
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return False
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# Adding peers
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added = 0
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for peer in peers:
|
|
if not peer["port"]: continue # Dont add peers with port 0
|
|
if self.addPeer(peer["addr"], peer["port"]): added += 1
|
|
if added:
|
|
self.worker_manager.onPeers()
|
|
self.updateWebsocket(peers_added=added)
|
|
self.log.debug("Found %s peers, new: %s" % (len(peers), added))
|
|
return time.time()-s
|
|
|
|
|
|
# Add myself and get other peers from tracker
|
|
def announce(self, force=False):
|
|
if time.time() < self.last_announce+30 and not force: return # No reannouncing within 30 secs
|
|
self.last_announce = time.time()
|
|
errors = []
|
|
slow = []
|
|
address_hash = hashlib.sha1(self.address).hexdigest() # Site address hash
|
|
my_peer_id = sys.modules["main"].file_server.peer_id
|
|
|
|
if sys.modules["main"].file_server.port_opened:
|
|
fileserver_port = config.fileserver_port
|
|
else: # Port not opened, report port 0
|
|
fileserver_port = 0
|
|
|
|
s = time.time()
|
|
announced = 0
|
|
threads = []
|
|
|
|
for protocol, ip, port in SiteManager.TRACKERS: # Start announce threads
|
|
thread = gevent.spawn(self.announceTracker, protocol, ip, port, fileserver_port, address_hash, my_peer_id)
|
|
threads.append(thread)
|
|
thread.ip = ip
|
|
thread.protocol = protocol
|
|
|
|
gevent.joinall(threads) # Wait for announce finish
|
|
|
|
for thread in threads:
|
|
if thread.value:
|
|
if thread.value > 1:
|
|
slow.append("%.2fs %s://%s" % (thread.value, thread.protocol, thread.ip))
|
|
announced += 1
|
|
else:
|
|
errors.append("%s://%s" % (thread.protocol, thread.ip))
|
|
|
|
# Save peers num
|
|
self.settings["peers"] = len(self.peers)
|
|
self.saveSettings()
|
|
|
|
if len(errors) < len(SiteManager.TRACKERS): # Less errors than total tracker nums
|
|
self.log.debug("Announced port %s to %s trackers in %.3fs, errors: %s, slow: %s" % (fileserver_port, announced, time.time()-s, errors, slow))
|
|
else:
|
|
self.log.error("Announced to %s trackers in %.3fs, failed" % (announced, time.time()-s))
|
|
|
|
if not [peer for peer in self.peers.values() if peer.connection and peer.connection.connected]: # If no connected peer yet then wait for connections
|
|
gevent.spawn_later(3, self.announcePex, need_num=10) # Spawn 3 secs later
|
|
# self.onFileDone.once(lambda inner_path: self.announcePex(need_num=10), "announcePex_%s" % self.address) # After first file downloaded try to find more peers using pex
|
|
else: # Else announce immediately
|
|
self.announcePex()
|
|
|
|
|
|
# Keep connections to get the updates (required for passive clients)
|
|
def needConnections(self, num=3):
|
|
need = min(len(self.peers), num) # Need 3 peer, but max total peers
|
|
|
|
connected = 0
|
|
for peer in self.peers.values(): # Check current connected number
|
|
if peer.connection and peer.connection.connected:
|
|
connected += 1
|
|
|
|
self.log.debug("Need connections: %s, Current: %s, Total: %s" % (need, connected, len(self.peers)))
|
|
|
|
if connected < need: # Need more than we have
|
|
for peer in self.peers.values():
|
|
if not peer.connection or not peer.connection.connected: # No peer connection or disconnected
|
|
peer.pex() # Initiate peer exchange
|
|
if peer.connection and peer.connection.connected: connected += 1 # Successfully connected
|
|
if connected >= need: break
|
|
return connected
|
|
|
|
|
|
# Return: Probably working, connectable Peers
|
|
def getConnectablePeers(self, need_num=5, ignore=[]):
|
|
peers = self.peers.values()
|
|
random.shuffle(peers)
|
|
found = []
|
|
for peer in peers:
|
|
if peer.key.endswith(":0"): continue # Not connectable
|
|
if not peer.connection: continue # No connection
|
|
if peer.key in ignore: continue # The requester has this peer
|
|
if time.time() - peer.connection.last_recv_time > 60*60*2: # Last message more than 2 hours ago
|
|
peer.connection = None # Cleanup: Dead connection
|
|
continue
|
|
found.append(peer)
|
|
if len(found) >= need_num: break # Found requested number of peers
|
|
|
|
if (not found and not ignore) or (need_num > 5 and need_num < 100 and len(found) < need_num): # Not found any peer and the requester dont have any, return not that good peers or Initial pex, but not /Stats page and we can't give enought peer
|
|
found = [peer for peer in peers if not peer.key.endswith(":0") and peer.key not in ignore][0:need_num-len(found)]
|
|
|
|
return found
|
|
|
|
|
|
|
|
# - Events -
|
|
|
|
# Add event listeners
|
|
def addEventListeners(self):
|
|
self.onFileStart = util.Event() # If WorkerManager added new task
|
|
self.onFileDone = util.Event() # If WorkerManager successfuly downloaded a file
|
|
self.onFileFail = util.Event() # If WorkerManager failed to download a file
|
|
self.onComplete = util.Event() # All file finished
|
|
|
|
self.onFileStart.append(lambda inner_path: self.fileStarted()) # No parameters to make Noparallel batching working
|
|
self.onFileDone.append(lambda inner_path: self.fileDone(inner_path))
|
|
self.onFileFail.append(lambda inner_path: self.fileFailed(inner_path))
|
|
|
|
|
|
# Send site status update to websocket clients
|
|
def updateWebsocket(self, **kwargs):
|
|
if kwargs:
|
|
param = {"event": kwargs.items()[0]}
|
|
else:
|
|
param = None
|
|
for ws in self.websockets:
|
|
ws.event("siteChanged", self, param)
|
|
|
|
|
|
# File download started
|
|
@util.Noparallel(blocking=False)
|
|
def fileStarted(self):
|
|
time.sleep(0.001) # Wait for other files adds
|
|
self.updateWebsocket(file_started=True)
|
|
|
|
|
|
# File downloaded successful
|
|
def fileDone(self, inner_path):
|
|
# File downloaded, remove it from bad files
|
|
if inner_path in self.bad_files:
|
|
self.log.debug("Bad file solved: %s" % inner_path)
|
|
del(self.bad_files[inner_path])
|
|
|
|
# Update content.json last downlad time
|
|
if inner_path == "content.json":
|
|
self.content_updated = time.time()
|
|
|
|
self.updateWebsocket(file_done=inner_path)
|
|
|
|
|
|
# File download failed
|
|
def fileFailed(self, inner_path):
|
|
if inner_path == "content.json":
|
|
self.content_updated = False
|
|
self.log.debug("Can't update content.json")
|
|
if inner_path in self.bad_files:
|
|
self.bad_files[inner_path] = self.bad_files.get(inner_path, 0)+1
|
|
|
|
self.updateWebsocket(file_failed=inner_path)
|
|
|