import os import json import logging import hashlib import re import time import random import sys import struct import socket import urllib import urllib2 import hashlib import collections import gevent import gevent.pool import util from lib import bencode from lib.subtl.subtl import UdpTrackerClient from Config import config from Peer import Peer from Worker import WorkerManager from Debug import Debug from Content import ContentManager from SiteStorage import SiteStorage from Crypt import CryptHash from util import helper from util import Diff from Plugin import PluginManager import SiteManager @PluginManager.acceptPlugins class Site(object): def __init__(self, address, allow_create=True, settings=None): self.address = re.sub("[^A-Za-z0-9]", "", address) # Make sure its correct address self.address_hash = hashlib.sha256(self.address).digest() self.address_short = "%s..%s" % (self.address[:6], self.address[-4:]) # Short address for logging self.log = logging.getLogger("Site:%s" % self.address_short) self.addEventListeners() self.content = None # Load content.json self.peers = {} # Key: ip:port, Value: Peer.Peer self.peers_recent = collections.deque(maxlen=100) self.peer_blacklist = SiteManager.peer_blacklist # Ignore this peers (eg. myself) self.time_announce = 0 # Last announce time to tracker self.last_tracker_id = random.randint(0, 10) # Last announced tracker id self.worker_manager = WorkerManager(self) # Handle site download from other peers self.bad_files = {} # SHA check failed files, need to redownload {"inner.content": 1} (key: file, value: failed accept) self.content_updated = None # Content.js update time self.notifications = [] # Pending notifications displayed once on page load [error|ok|info, message, timeout] self.page_requested = False # Page viewed in browser self.websockets = [] # Active site websocket connections self.connection_server = None self.loadSettings(settings) # Load settings from sites.json self.storage = SiteStorage(self, allow_create=allow_create) # Save and load site files self.content_manager = ContentManager(self) self.content_manager.loadContents() # Load content.json files if "main" in sys.modules and "file_server" in dir(sys.modules["main"]): # Use global file server by default if possible self.connection_server = sys.modules["main"].file_server else: self.connection_server = None if not self.settings.get("auth_key"): # To auth user in site (Obsolete, will be removed) self.settings["auth_key"] = CryptHash.random() self.log.debug("New auth key: %s" % self.settings["auth_key"]) if not self.settings.get("wrapper_key"): # To auth websocket permissions self.settings["wrapper_key"] = CryptHash.random() self.log.debug("New wrapper key: %s" % self.settings["wrapper_key"]) if not self.settings.get("ajax_key"): # To auth websocket permissions self.settings["ajax_key"] = CryptHash.random() self.log.debug("New ajax key: %s" % self.settings["ajax_key"]) def __str__(self): return "Site %s" % self.address_short def __repr__(self): return "<%s>" % self.__str__() # Load site settings from data/sites.json def loadSettings(self, settings=None): if not settings: settings = json.load(open("%s/sites.json" % config.data_dir)).get(self.address) if settings: self.settings = settings if "cache" not in settings: settings["cache"] = {} if "size_files_optional" not in settings: settings["size_optional"] = 0 if "optional_downloaded" not in settings: settings["optional_downloaded"] = 0 self.bad_files = settings["cache"].get("bad_files", {}) settings["cache"]["bad_files"] = {} # Give it minimum 10 tries after restart for inner_path in self.bad_files: self.bad_files[inner_path] = min(self.bad_files[inner_path], 20) else: self.settings = { "own": False, "serving": True, "permissions": [], "added": int(time.time()), "optional_downloaded": 0, "size_optional": 0 } # Default if config.download_optional == "auto": self.settings["autodownloadoptional"] = True # Add admin permissions to homepage if self.address == config.homepage and "ADMIN" not in self.settings["permissions"]: self.settings["permissions"].append("ADMIN") return # Save site settings to data/sites.json def saveSettings(self): if not SiteManager.site_manager.sites: SiteManager.site_manager.sites = {} if not SiteManager.site_manager.sites.get(self.address): SiteManager.site_manager.sites[self.address] = self SiteManager.site_manager.load(False) SiteManager.site_manager.save() def getSettingsCache(self): back = {} back["bad_files"] = self.bad_files back["hashfield"] = self.content_manager.hashfield.tostring().encode("base64") return back # Max site size in MB def getSizeLimit(self): return self.settings.get("size_limit", int(config.size_limit)) # Next size limit based on current size def getNextSizeLimit(self): size_limits = [10, 20, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 50000, 100000] size = self.settings.get("size", 0) for size_limit in size_limits: if size * 1.2 < size_limit * 1024 * 1024: return size_limit return 999999 # Download all file from content.json def downloadContent(self, inner_path, download_files=True, peer=None, check_modifications=False, diffs={}): s = time.time() if config.verbose: self.log.debug("Downloading %s..." % inner_path) if not inner_path.endswith("content.json"): return False found = self.needFile(inner_path, update=self.bad_files.get(inner_path)) content_inner_dir = helper.getDirname(inner_path) if not found: self.log.debug("Download %s failed, check_modifications: %s" % (inner_path, check_modifications)) if check_modifications: # Download failed, but check modifications if its succed later self.onFileDone.once(lambda file_name: self.checkModifications(0), "check_modifications") return False # Could not download content.json if config.verbose: self.log.debug("Got %s" % inner_path) changed, deleted = self.content_manager.loadContent(inner_path, load_includes=False) if inner_path == "content.json": self.saveSettings() if peer: # Update last received update from peer to prevent re-sending the same update to it peer.last_content_json_update = self.content_manager.contents[inner_path]["modified"] # Start download files file_threads = [] if download_files: for file_relative_path in self.content_manager.contents[inner_path].get("files", {}).keys(): file_inner_path = content_inner_dir + file_relative_path # Try to diff first diff_success = False diff_actions = diffs.get(file_relative_path) if diff_actions and self.bad_files.get(file_inner_path): try: s = time.time() new_file = Diff.patch(self.storage.open(file_inner_path, "rb"), diff_actions) new_file.seek(0) time_diff = time.time() - s s = time.time() diff_success = self.content_manager.verifyFile(file_inner_path, new_file) time_verify = time.time() - s if diff_success: s = time.time() new_file.seek(0) self.storage.write(file_inner_path, new_file) time_write = time.time() - s s = time.time() self.onFileDone(file_inner_path) time_on_done = time.time() - s self.log.debug( "Patched successfully: %s (diff: %.3fs, verify: %.3fs, write: %.3fs, on_done: %.3fs)" % (file_inner_path, time_diff, time_verify, time_write, time_on_done) ) except Exception, err: self.log.debug("Failed to patch %s: %s" % (file_inner_path, err)) diff_success = False if not diff_success: # Start download and dont wait for finish, return the event res = self.needFile(file_inner_path, blocking=False, update=self.bad_files.get(file_inner_path), peer=peer) if res is not True and res is not False: # Need downloading and file is allowed file_threads.append(res) # Append evt # Optionals files if inner_path == "content.json": gevent.spawn(self.updateHashfield) for file_relative_path in self.content_manager.contents[inner_path].get("files_optional", {}).keys(): file_inner_path = content_inner_dir + file_relative_path if file_inner_path not in changed and not self.bad_files.get(file_inner_path): continue if not self.isDownloadable(file_inner_path): continue # Start download and dont wait for finish, return the event res = self.pooledNeedFile( file_inner_path, blocking=False, update=self.bad_files.get(file_inner_path), peer=peer ) if res is not True and res is not False: # Need downloading and file is allowed file_threads.append(res) # Append evt # Wait for includes download include_threads = [] for file_relative_path in self.content_manager.contents[inner_path].get("includes", {}).keys(): file_inner_path = content_inner_dir + file_relative_path include_thread = gevent.spawn(self.downloadContent, file_inner_path, download_files=download_files, peer=peer) include_threads.append(include_thread) if config.verbose: self.log.debug("%s: Downloading %s includes..." % (inner_path, len(include_threads))) gevent.joinall(include_threads) if config.verbose: self.log.debug("%s: Includes download ended" % inner_path) if check_modifications: # Check if every file is up-to-date self.checkModifications(0) if config.verbose: self.log.debug("%s: Downloading %s files, changed: %s..." % (inner_path, len(file_threads), len(changed))) gevent.joinall(file_threads) if config.verbose: self.log.debug("%s: DownloadContent ended in %.3fs" % (inner_path, time.time() - s)) if not self.worker_manager.tasks: self.onComplete() # No more task trigger site complete return True # Return bad files with less than 3 retry def getReachableBadFiles(self): if not self.bad_files: return False return [bad_file for bad_file, retry in self.bad_files.iteritems() if retry < 3] # Retry download bad files def retryBadFiles(self, force=False): self.checkBadFiles() self.log.debug("Retry %s bad files" % len(self.bad_files)) content_inner_paths = [] file_inner_paths = [] for bad_file, tries in self.bad_files.items(): if force or random.randint(0, min(40, tries)) < 4: # Larger number tries = less likely to check every 15min if bad_file.endswith("content.json"): content_inner_paths.append(bad_file) else: file_inner_paths.append(bad_file) if content_inner_paths: self.pooledDownloadContent(content_inner_paths, only_if_bad=True) if file_inner_paths: self.pooledDownloadFile(file_inner_paths, only_if_bad=True) def checkBadFiles(self): for bad_file in self.bad_files.keys(): file_info = self.content_manager.getFileInfo(bad_file) if bad_file.endswith("content.json"): if file_info is False and bad_file != "content.json": del self.bad_files[bad_file] self.log.debug("No info for file: %s, removing from bad_files" % bad_file) else: if file_info is False or not file_info.get("size"): del self.bad_files[bad_file] self.log.debug("No info or size for file: %s, removing from bad_files" % bad_file) # Download all files of the site @util.Noparallel(blocking=False) def download(self, check_size=False, blind_includes=False): if not self.connection_server: self.log.debug("No connection server found, skipping download") return False self.log.debug( "Start downloading, bad_files: %s, check_size: %s, blind_includes: %s" % (self.bad_files, check_size, blind_includes) ) gevent.spawn(self.announce, force=True) if check_size: # Check the size first valid = self.downloadContent("content.json", download_files=False) # Just download content.json files if not valid: return False # Cant download content.jsons or size is not fits # Download everything valid = self.downloadContent("content.json", check_modifications=blind_includes) self.onComplete.once(lambda: self.retryBadFiles(force=True)) return valid def pooledDownloadContent(self, inner_paths, pool_size=100, only_if_bad=False): self.log.debug("New downloadContent pool: len: %s" % len(inner_paths)) self.worker_manager.started_task_num += len(inner_paths) pool = gevent.pool.Pool(pool_size) for inner_path in inner_paths: if not only_if_bad or inner_path in self.bad_files: pool.spawn(self.downloadContent, inner_path) self.worker_manager.started_task_num -= 1 self.log.debug("Ended downloadContent pool len: %s" % len(inner_paths)) def pooledDownloadFile(self, inner_paths, pool_size=100, only_if_bad=False): self.log.debug("New downloadFile pool: len: %s" % len(inner_paths)) self.worker_manager.started_task_num += len(inner_paths) pool = gevent.pool.Pool(pool_size) for inner_path in inner_paths: if not only_if_bad or inner_path in self.bad_files: pool.spawn(self.needFile, inner_path, update=True) self.worker_manager.started_task_num -= 1 self.log.debug("Ended downloadFile pool len: %s" % len(inner_paths)) # Update worker, try to find client that supports listModifications command def updater(self, peers_try, queried, since): while 1: if not peers_try or len(queried) >= 3: # Stop after 3 successful query break peer = peers_try.pop(0) if config.verbose: self.log.debug("Try to get updates from: %s Left: %s" % (peer, peers_try)) res = None with gevent.Timeout(20, exception=False): res = peer.listModified(since) if not res or "modified_files" not in res: continue # Failed query queried.append(peer) modified_contents = [] my_modified = self.content_manager.listModified(since) for inner_path, modified in res["modified_files"].iteritems(): # Check if the peer has newer files than we has_newer = int(modified) > my_modified.get(inner_path, 0) has_older = int(modified) < my_modified.get(inner_path, 0) if inner_path not in self.bad_files and not self.content_manager.isArchived(inner_path, modified): if has_newer: # We dont have this file or we have older modified_contents.append(inner_path) self.bad_files[inner_path] = self.bad_files.get(inner_path, 0) + 1 if has_older: self.log.debug("%s client has older version of %s, publishing there..." % (peer, inner_path)) gevent.spawn(self.publisher, inner_path, [peer], [], 1) if modified_contents: self.log.debug("%s new modified file from %s" % (len(modified_contents), peer)) modified_contents.sort(key=lambda inner_path: 0 - res["modified_files"][inner_path]) # Download newest first gevent.spawn(self.pooledDownloadContent, modified_contents) # Check modified content.json files from peers and add modified files to bad_files # Return: Successfully queried peers [Peer, Peer...] def checkModifications(self, since=None): s = time.time() peers_try = [] # Try these peers queried = [] # Successfully queried from these peers limit = 5 # Wait for peers if not self.peers: self.announce() for wait in range(10): time.sleep(5 + wait) self.log.debug("Waiting for peers...") if self.peers: break peers_try = self.getConnectedPeers() peers_connected_num = len(peers_try) if peers_connected_num < limit * 2: # Add more, non-connected peers if necessary peers_try += self.getRecentPeers(limit * 5) if since is None: # No since defined, download from last modification time-1day since = self.settings.get("modified", 60 * 60 * 24) - 60 * 60 * 24 if config.verbose: self.log.debug( "Try to get listModifications from peers: %s, connected: %s, since: %s" % (peers_try, peers_connected_num, since) ) updaters = [] for i in range(3): updaters.append(gevent.spawn(self.updater, peers_try, queried, since)) gevent.joinall(updaters, timeout=10) # Wait 10 sec to workers done query modifications if not queried: # Start another 3 thread if first 3 is stuck peers_try[0:0] = [peer for peer in self.getConnectedPeers() if peer.connection.connected] # Add connected peers for _ in range(10): gevent.joinall(updaters, timeout=10) # Wait another 10 sec if none of updaters finished if queried: break self.log.debug("Queried listModifications from: %s in %.3fs" % (queried, time.time() - s)) time.sleep(0.1) return queried # Update content.json from peers and download changed files # Return: None @util.Noparallel() def update(self, announce=False, check_files=False, since=None): self.content_manager.loadContent("content.json", load_includes=False) # Reload content.json self.content_updated = None # Reset content updated time self.updateWebsocket(updating=True) # Remove files that no longer in content.json self.checkBadFiles() if announce: self.announce() # Full update, we can reset bad files if check_files and since == 0: self.bad_files = {} queried = self.checkModifications(since) if check_files: self.storage.updateBadFiles(quick_check=True) # Quick check and mark bad files based on file size changed, deleted = self.content_manager.loadContent("content.json", load_includes=False) if self.bad_files: self.log.debug("Bad files: %s" % self.bad_files) gevent.spawn(self.retryBadFiles, force=True) if len(queried) == 0: # Failed to query modifications self.content_updated = False self.bad_files["content.json"] = 1 else: self.content_updated = time.time() self.updateWebsocket(updated=True) # Update site by redownload all content.json def redownloadContents(self): # Download all content.json again content_threads = [] for inner_path in self.content_manager.contents.keys(): content_threads.append(self.needFile(inner_path, update=True, blocking=False)) self.log.debug("Waiting %s content.json to finish..." % len(content_threads)) gevent.joinall(content_threads) # Publish worker def publisher(self, inner_path, peers, published, limit, diffs={}, event_done=None, cb_progress=None): file_size = self.storage.getSize(inner_path) content_json_modified = self.content_manager.contents[inner_path]["modified"] body = self.storage.read(inner_path) # Find out my ip and port tor_manager = self.connection_server.tor_manager if tor_manager and tor_manager.enabled and tor_manager.start_onions: my_ip = tor_manager.getOnion(self.address) if my_ip: my_ip += ".onion" my_port = config.fileserver_port else: my_ip = config.ip_external if self.connection_server.port_opened: my_port = config.fileserver_port else: my_port = 0 while 1: if not peers or len(published) >= limit: if event_done: event_done.set(True) break # All peers done, or published engouht peer = peers.pop() if peer in published: continue if peer.last_content_json_update == content_json_modified: self.log.debug("%s already received this update for %s, skipping" % (peer, inner_path)) continue if peer.connection and peer.connection.last_ping_delay: # Peer connected # Timeout: 5sec + size in kb + last_ping timeout = 5 + int(file_size / 1024) + peer.connection.last_ping_delay else: # Peer not connected # Timeout: 10sec + size in kb timeout = 10 + int(file_size / 1024) result = {"exception": "Timeout"} for retry in range(2): try: with gevent.Timeout(timeout, False): result = peer.request("update", { "site": self.address, "inner_path": inner_path, "body": body, "diffs": diffs }) if result: break except Exception, err: self.log.error("Publish error: %s" % Debug.formatException(err)) result = {"exception": Debug.formatException(err)} if result and "ok" in result: published.append(peer) if cb_progress and len(published) <= limit: cb_progress(len(published), limit) self.log.info("[OK] %s: %s %s/%s" % (peer.key, result["ok"], len(published), limit)) else: if result == {"exception": "Timeout"}: peer.onConnectionError("Publish timeout") self.log.info("[FAILED] %s: %s" % (peer.key, result)) time.sleep(0.01) # Update content.json on peers @util.Noparallel() def publish(self, limit="default", inner_path="content.json", diffs={}, cb_progress=None): published = [] # Successfully published (Peer) publishers = [] # Publisher threads if not self.peers: self.announce() if limit == "default": limit = 5 threads = limit peers = self.getConnectedPeers() num_connected_peers = len(peers) random.shuffle(peers) peers = sorted(peers, key=lambda peer: peer.connection.handshake.get("rev", 0) < config.rev - 100) # Prefer newer clients if len(peers) < limit * 2 and len(self.peers) > len(peers): # Add more, non-connected peers if necessary peers += self.getRecentPeers(limit * 2) peers = set(peers) self.log.info("Publishing %s to %s/%s peers (connected: %s) diffs: %s (%.2fk)..." % ( inner_path, limit, len(self.peers), num_connected_peers, diffs.keys(), float(len(str(diffs))) / 1024 )) if not peers: return 0 # No peers found event_done = gevent.event.AsyncResult() for i in range(min(len(peers), limit, threads)): publisher = gevent.spawn(self.publisher, inner_path, peers, published, limit, diffs, event_done, cb_progress) publishers.append(publisher) event_done.get() # Wait for done if len(published) < min(len(self.peers), limit): time.sleep(0.2) # If less than we need sleep a bit if len(published) == 0: gevent.joinall(publishers) # No successful publish, wait for all publisher # Publish more peers in the backgroup self.log.info( "Successfuly %s published to %s peers, publishing to %s more peers in the background" % (inner_path, len(published), limit) ) for thread in range(2): gevent.spawn(self.publisher, inner_path, peers, published, limit=limit * 2, diffs=diffs) # Send my hashfield to every connected peer if changed gevent.spawn(self.sendMyHashfield, 100) return len(published) # Copy this site def clone(self, address, privatekey=None, address_index=None, root_inner_path="", overwrite=False): import shutil new_site = SiteManager.site_manager.need(address, all_file=False) default_dirs = [] # Dont copy these directories (has -default version) for dir_name in os.listdir(self.storage.directory): if "-default" in dir_name: default_dirs.append(dir_name.replace("-default", "")) self.log.debug("Cloning to %s, ignore dirs: %s, root: %s" % (address, default_dirs, root_inner_path)) # Copy root content.json if not new_site.storage.isFile("content.json") and not overwrite: # New site: Content.json not exist yet, create a new one from source site if "size_limit" in self.settings: new_site.settings["size_limit"] = self.settings["size_limit"] # Use content.json-default is specified if self.storage.isFile(root_inner_path + "/content.json-default"): content_json = self.storage.loadJson(root_inner_path + "/content.json-default") else: content_json = self.storage.loadJson("content.json") if "domain" in content_json: del content_json["domain"] content_json["title"] = "my" + content_json["title"] content_json["cloned_from"] = self.address content_json["clone_root"] = root_inner_path content_json["files"] = {} if address_index: content_json["address_index"] = address_index # Site owner's BIP32 index new_site.storage.writeJson("content.json", content_json) new_site.content_manager.loadContent( "content.json", add_bad_files=False, delete_removed_files=False, load_includes=False ) # Copy files for content_inner_path, content in self.content_manager.contents.items(): file_relative_paths = content.get("files", {}).keys() # Sign content.json at the end to make sure every file is included file_relative_paths.sort() file_relative_paths.sort(key=lambda key: key.replace("-default", "").endswith("content.json")) for file_relative_path in file_relative_paths: file_inner_path = helper.getDirname(content_inner_path) + file_relative_path # Relative to content.json file_inner_path = file_inner_path.strip("/") # Strip leading / if not file_inner_path.startswith(root_inner_path): self.log.debug("[SKIP] %s (not in clone root)" % file_inner_path) continue if file_inner_path.split("/")[0] in default_dirs: # Dont copy directories that has -default postfixed alternative self.log.debug("[SKIP] %s (has default alternative)" % file_inner_path) continue file_path = self.storage.getPath(file_inner_path) # Copy the file normally to keep the -default postfixed dir and file to allow cloning later if root_inner_path: file_inner_path_dest = re.sub("^%s/" % re.escape(root_inner_path), "", file_inner_path) file_path_dest = new_site.storage.getPath(file_inner_path_dest) else: file_inner_path_dest = file_inner_path file_path_dest = new_site.storage.getPath(file_inner_path) self.log.debug("[COPY] %s to %s..." % (file_inner_path, file_path_dest)) dest_dir = os.path.dirname(file_path_dest) if not os.path.isdir(dest_dir): os.makedirs(dest_dir) if file_inner_path_dest.replace("-default", "") == "content.json": # Don't copy root content.json-default continue shutil.copy(file_path, file_path_dest) # If -default in path, create a -default less copy of the file if "-default" in file_inner_path: file_path_dest = new_site.storage.getPath(file_inner_path.replace("-default", "")) if new_site.storage.isFile(file_inner_path.replace("-default", "")) and not overwrite: # Don't overwrite site files with default ones self.log.debug("[SKIP] Default file: %s (already exist)" % file_inner_path) continue self.log.debug("[COPY] Default file: %s to %s..." % (file_inner_path, file_path_dest)) dest_dir = os.path.dirname(file_path_dest) if not os.path.isdir(dest_dir): os.makedirs(dest_dir) shutil.copy(file_path, file_path_dest) # Sign if content json if file_path_dest.endswith("/content.json"): new_site.storage.onUpdated(file_inner_path.replace("-default", "")) new_site.content_manager.loadContent( file_inner_path.replace("-default", ""), add_bad_files=False, delete_removed_files=False, load_includes=False ) if privatekey: new_site.content_manager.sign(file_inner_path.replace("-default", ""), privatekey) new_site.content_manager.loadContent( file_inner_path, add_bad_files=False, delete_removed_files=False, load_includes=False ) if privatekey: new_site.content_manager.sign("content.json", privatekey) new_site.content_manager.loadContent( "content.json", add_bad_files=False, delete_removed_files=False, load_includes=False ) # Rebuild DB if new_site.storage.isFile("dbschema.json"): new_site.storage.closeDb() new_site.storage.rebuildDb() return new_site @util.Pooled(100) def pooledNeedFile(self, *args, **kwargs): return self.needFile(*args, **kwargs) def isFileDownloadAllowed(self, inner_path, file_info): if file_info.get("size", 0) > config.file_size_limit * 1024 * 1024: self.log.debug( "File size %s too large: %sMB > %sMB, skipping..." % (inner_path, file_info.get("size", 0) / 1024 / 1024, config.file_size_limit) ) return False else: return True def needFileInfo(self, inner_path): file_info = self.content_manager.getFileInfo(inner_path) if not file_info: # No info for file, download all content.json first self.log.debug("No info for %s, waiting for all content.json" % inner_path) success = self.downloadContent("content.json", download_files=False) if not success: return False file_info = self.content_manager.getFileInfo(inner_path) return file_info # Check and download if file not exist def needFile(self, inner_path, update=False, blocking=True, peer=None, priority=0): if self.storage.isFile(inner_path) and not update: # File exist, no need to do anything return True elif self.settings["serving"] is False: # Site not serving return False else: # Wait until file downloaded self.bad_files[inner_path] = self.bad_files.get(inner_path, 0) + 1 # Mark as bad file if not self.content_manager.contents.get("content.json"): # No content.json, download it first! self.log.debug("Need content.json first") gevent.spawn(self.announce) if inner_path != "content.json": # Prevent double download task = self.worker_manager.addTask("content.json", peer) task["evt"].get() self.content_manager.loadContent() if not self.content_manager.contents.get("content.json"): return False # Content.json download failed file_info = None if not inner_path.endswith("content.json"): file_info = self.needFileInfo(inner_path) if not file_info: return False if "cert_signers" in file_info and not file_info["content_inner_path"] in self.content_manager.contents: self.log.debug("Missing content.json for requested user file: %s" % inner_path) if self.bad_files.get(file_info["content_inner_path"], 0) > 5: self.log.debug("File %s not reachable: retry %s" % ( inner_path, self.bad_files.get(file_info["content_inner_path"], 0) )) return False self.downloadContent(file_info["content_inner_path"]) if not self.isFileDownloadAllowed(inner_path, file_info): self.log.debug("%s: Download not allowed" % inner_path) return False task = self.worker_manager.addTask(inner_path, peer, priority=priority, file_info=file_info) if blocking: return task["evt"].get() else: return task["evt"] # Add or update a peer to site # return_peer: Always return the peer even if it was already present def addPeer(self, ip, port, return_peer=False, connection=None, source="other"): if not ip or ip == "0.0.0.0": return False key = "%s:%s" % (ip, port) peer = self.peers.get(key) if peer: # Already has this ip peer.found(source) if return_peer: # Always return peer return peer else: return False else: # New peer if (ip, port) in self.peer_blacklist: return False # Ignore blacklist (eg. myself) peer = Peer(ip, port, self) self.peers[key] = peer peer.found(source) return peer # Gather peer from connected peers @util.Noparallel(blocking=False) def announcePex(self, query_num=2, need_num=5): peers = [peer for peer in self.peers.values() if peer.connection and peer.connection.connected] # Connected peers if len(peers) == 0: # Small number of connected peers for this site, connect to any self.log.debug("Small number of peers detected...query all of peers using pex") peers = self.peers.values() need_num = 10 random.shuffle(peers) done = 0 added = 0 for peer in peers: res = peer.pex(need_num=need_num) if type(res) == int: # We have result done += 1 added += res if res: self.worker_manager.onPeers() self.updateWebsocket(peers_added=res) if done == query_num: break self.log.debug("Queried pex from %s peers got %s new peers." % (done, added)) # Gather peers from tracker # Return: Complete time or False on error def announceTracker(self, tracker_protocol, tracker_address, fileserver_port=0, add_types=[], my_peer_id="", mode="start"): s = time.time() if "ip4" not in add_types: fileserver_port = 0 if tracker_protocol == "udp": # Udp tracker if config.disable_udp: return False # No udp supported ip, port = tracker_address.split(":") tracker = UdpTrackerClient(ip, int(port)) tracker.peer_port = fileserver_port try: tracker.connect() tracker.poll_once() tracker.announce(info_hash=hashlib.sha1(self.address).hexdigest(), num_want=50) back = tracker.poll_once() if back: peers = back["response"]["peers"] else: raise Exception("No response") except Exception, err: self.log.warning("Tracker error: udp://%s:%s (%s)" % (ip, port, err)) return False elif tracker_protocol == "http": # Http tracker params = { 'info_hash': hashlib.sha1(self.address).digest(), 'peer_id': my_peer_id, 'port': fileserver_port, 'uploaded': 0, 'downloaded': 0, 'left': 0, 'compact': 1, 'numwant': 30, 'event': 'started' } req = None try: url = "http://" + tracker_address + "?" + urllib.urlencode(params) # Load url with gevent.Timeout(30, False): # Make sure of timeout req = urllib2.urlopen(url, timeout=25) response = req.read() req.fp._sock.recv = None # Hacky avoidance of memory leak for older python versions req.close() req = None if not response: self.log.warning("Tracker error: http://%s (No response)" % tracker_address) return False # Decode peers peer_data = bencode.decode(response)["peers"] response = None peer_count = len(peer_data) / 6 peers = [] for peer_offset in xrange(peer_count): off = 6 * peer_offset peer = peer_data[off:off + 6] addr, port = struct.unpack('!LH', peer) peers.append({"addr": socket.inet_ntoa(struct.pack('!L', addr)), "port": port}) except Exception, err: self.log.warning("Tracker error: http://%s (%s)" % (tracker_address, err)) if req: req.close() req = None return False else: peers = [] # Adding peers added = 0 for peer in peers: if not peer["port"]: continue # Dont add peers with port 0 if self.addPeer(peer["addr"], peer["port"], source="tracker"): added += 1 if added: self.worker_manager.onPeers() self.updateWebsocket(peers_added=added) self.log.debug( "Tracker result: %s://%s (found %s peers, new: %s, total: %s)" % (tracker_protocol, tracker_address, len(peers), added, len(self.peers)) ) return time.time() - s # Add myself and get other peers from tracker def announce(self, force=False, mode="start", pex=True): if time.time() < self.time_announce + 30 and not force: return # No reannouncing within 30 secs self.time_announce = time.time() trackers = config.trackers # Filter trackers based on supported networks if config.disable_udp: trackers = [tracker for tracker in trackers if not tracker.startswith("udp://")] if self.connection_server and self.connection_server.tor_manager and not self.connection_server.tor_manager.enabled: trackers = [tracker for tracker in trackers if ".onion" not in tracker] if trackers and (mode == "update" or mode == "more"): # Only announce on one tracker, increment the queried tracker id self.last_tracker_id += 1 self.last_tracker_id = self.last_tracker_id % len(trackers) trackers = [trackers[self.last_tracker_id]] # We only going to use this one errors = [] slow = [] add_types = [] if self.connection_server: my_peer_id = self.connection_server.peer_id # Type of addresses they can reach me if self.connection_server.port_opened: add_types.append("ip4") if self.connection_server.tor_manager and self.connection_server.tor_manager.start_onions: add_types.append("onion") else: my_peer_id = "" s = time.time() announced = 0 threads = [] fileserver_port = config.fileserver_port for tracker in trackers: # Start announce threads tracker_protocol, tracker_address = tracker.split("://") thread = gevent.spawn( self.announceTracker, tracker_protocol, tracker_address, fileserver_port, add_types, my_peer_id, mode ) threads.append(thread) thread.tracker_address = tracker_address thread.tracker_protocol = tracker_protocol gevent.joinall(threads, timeout=10) # Wait for announce finish for thread in threads: if thread.value: if thread.value > 1: slow.append("%.2fs %s://%s" % (thread.value, thread.tracker_protocol, thread.tracker_address)) announced += 1 else: if thread.ready(): errors.append("%s://%s" % (thread.tracker_protocol, thread.tracker_address)) else: # Still running slow.append("10s+ %s://%s" % (thread.tracker_protocol, thread.tracker_address)) # Save peers num self.settings["peers"] = len(self.peers) if len(errors) < len(threads): # Less errors than total tracker nums if announced == 1: announced_to = trackers[0] else: announced_to = "%s trackers" % announced if config.verbose: self.log.debug( "Announced types %s in mode %s to %s in %.3fs, errors: %s, slow: %s" % (add_types, mode, announced_to, time.time() - s, errors, slow) ) else: if mode != "update": self.log.error("Announce to %s trackers in %.3fs, failed" % (announced, time.time() - s)) if pex: 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 else: # Else announce immediately if mode == "more": # Need more peers self.announcePex(need_num=10) else: self.announcePex() # Keep connections to get the updates def needConnections(self, num=6, check_site_on_reconnect=False): need = min(len(self.peers), num, config.connected_limit) # Need 5 peer, but max total peers connected = len(self.getConnectedPeers()) connected_before = connected 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 self.log.debug( "Connected before: %s, after: %s. Check site: %s." % (connected_before, connected, check_site_on_reconnect) ) if check_site_on_reconnect and connected_before == 0 and connected > 0 and self.connection_server.has_internet: gevent.spawn(self.update, check_files=False) return connected # Return: Probably peers verified to be connectable recently def getConnectablePeers(self, need_num=5, ignore=[], allow_private=True): peers = self.peers.values() 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 if not allow_private and helper.isPrivateIp(peer.ip): continue found.append(peer) if len(found) >= need_num: break # Found requested number of peers if len(found) < need_num: # Return not that good peers found = [ peer for peer in peers if not peer.key.endswith(":0") and peer.key not in ignore and (allow_private or not helper.isPrivateIp(peer.ip)) ][0:need_num - len(found)] return found # Return: Recently found peers def getRecentPeers(self, need_num): found = list(set(self.peers_recent)) self.log.debug("Recent peers %s of %s (need: %s)" % (len(found), len(self.peers_recent), need_num)) if len(found) >= need_num or len(found) >= len(self.peers): return found[0:need_num] # Add random peers need_more = need_num - len(found) found_more = sorted( self.peers.values()[0:need_more * 50], key=lambda peer: peer.time_found + peer.reputation * 60, reverse=True )[0:need_more * 2] random.shuffle(found_more) found += found_more return found[0:need_num] def getConnectedPeers(self): back = [] if not self.connection_server: return [] tor_manager = self.connection_server.tor_manager for connection in self.connection_server.connections: if not connection.connected and time.time() - connection.start_time > 20: # Still not connected after 20s continue peer = self.peers.get("%s:%s" % (connection.ip, connection.port)) if peer: if connection.target_onion and tor_manager.start_onions and tor_manager.getOnion(self.address) != connection.target_onion: continue if not peer.connection: peer.connect(connection) back.append(peer) return back # Cleanup probably dead peers and close connection if too much def cleanupPeers(self, peers_protected=[]): peers = self.peers.values() if len(peers) > 20: # Cleanup old peers removed = 0 if len(peers) > 1000: ttl = 60 * 60 * 1 else: ttl = 60 * 60 * 4 for peer in peers: if peer.connection and peer.connection.connected: continue if peer.connection and not peer.connection.connected: peer.connection = None # Dead connection if time.time() - peer.time_found > ttl: # Not found on tracker or via pex in last 4 hour peer.remove("Time found expired") removed += 1 if removed > len(peers) * 0.1: # Don't remove too much at once break if removed: self.log.debug("Cleanup peers result: Removed %s, left: %s" % (removed, len(self.peers))) # Close peers over the limit closed = 0 connected_peers = [peer for peer in self.getConnectedPeers() if peer.connection.connected] # Only fully connected peers need_to_close = len(connected_peers) - config.connected_limit if closed < need_to_close: # Try to keep connections with more sites for peer in sorted(connected_peers, key=lambda peer: min(peer.connection.sites, 5)): if not peer.connection: continue if peer.key in peers_protected: continue if peer.connection.sites > 5: break peer.connection.close("Cleanup peers") peer.connection = None closed += 1 if closed >= need_to_close: break if need_to_close > 0: self.log.debug("Connected: %s, Need to close: %s, Closed: %s" % (len(connected_peers), need_to_close, closed)) # Send hashfield to peers def sendMyHashfield(self, limit=5): if not self.content_manager.hashfield: # No optional files return False sent = 0 connected_peers = self.getConnectedPeers() for peer in connected_peers: if peer.sendMyHashfield(): sent += 1 if sent >= limit: break if sent: my_hashfield_changed = self.content_manager.hashfield.time_changed self.log.debug("Sent my hashfield (chaged %.3fs ago) to %s peers" % (time.time() - my_hashfield_changed, sent)) return sent # Update hashfield def updateHashfield(self, limit=5): # Return if no optional files if not self.content_manager.hashfield and not self.content_manager.contents.get("content.json", {}).get("files_optional"): return False queried = 0 connected_peers = self.getConnectedPeers() for peer in connected_peers: if peer.time_hashfield: continue if peer.updateHashfield(): queried += 1 if queried >= limit: break if queried: self.log.debug("Queried hashfield from %s peers" % queried) return queried # Returns if the optional file is need to be downloaded or not def isDownloadable(self, inner_path): return self.settings.get("autodownloadoptional") def delete(self): self.settings["serving"] = False self.saveSettings() self.worker_manager.running = False self.worker_manager.stopWorkers() self.storage.deleteFiles() self.updateWebsocket() self.content_manager.contents.db.deleteSite(self) SiteManager.site_manager.delete(self.address) # - Events - # Add event listeners def addEventListeners(self): self.onFileStart = util.Event() # If WorkerManager added new task self.onFileDone = util.Event() # If WorkerManager successfully 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) def messageWebsocket(self, message, type="info", progress=None): for ws in self.websockets: if progress is None: ws.cmd("notification", [type, message]) else: ws.cmd("progress", [type, message, progress]) # 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: if config.verbose: 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 and self.connection_server.has_internet: self.bad_files[inner_path] = self.bad_files.get(inner_path, 0) + 1 self.updateWebsocket(file_failed=inner_path) if self.bad_files.get(inner_path, 0) > 30: self.log.debug("Giving up on %s" % inner_path) del self.bad_files[inner_path] # Give up after 30 tries