/usr/share/pyshared/livereload/server.py is in python-livereload 1.0.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""livereload.app
Core Server of LiveReload.
"""
import os
import logging
import time
import mimetypes
import webbrowser
import hashlib
from tornado import ioloop
from tornado import escape
from tornado import websocket
from tornado.web import RequestHandler, Application
from tornado.util import ObjectDict
try:
from tornado.log import enable_pretty_logging
except ImportError:
from tornado.options import enable_pretty_logging
from livereload.task import Task
PORT = 35729
ROOT = '.'
LIVERELOAD = os.path.join(
os.path.abspath(os.path.dirname(__file__)),
'livereload.js',
)
class LiveReloadHandler(websocket.WebSocketHandler):
waiters = set()
_last_reload_time = None
def allow_draft76(self):
return True
def on_close(self):
if self in LiveReloadHandler.waiters:
LiveReloadHandler.waiters.remove(self)
def send_message(self, message):
if isinstance(message, dict):
message = escape.json_encode(message)
try:
self.write_message(message)
except:
logging.error('Error sending message', exc_info=True)
def poll_tasks(self):
changes = Task.watch()
if not changes:
return
self.watch_tasks()
def watch_tasks(self):
if time.time() - self._last_reload_time < 3:
# if you changed lot of files in one time
# it will refresh too many times
logging.info('ignore this reload action')
return
logging.info('Reload %s waiters', len(self.waiters))
msg = {
'command': 'reload',
'path': Task.last_modified or '*',
'liveCSS': True
}
self._last_reload_time = time.time()
for waiter in LiveReloadHandler.waiters:
try:
waiter.write_message(msg)
except:
logging.error('Error sending message', exc_info=True)
LiveReloadHandler.waiters.remove(waiter)
def on_message(self, message):
"""Handshake with livereload.js
1. client send 'hello'
2. server reply 'hello'
3. client send 'info'
http://help.livereload.com/kb/ecosystem/livereload-protocol
"""
message = ObjectDict(escape.json_decode(message))
if message.command == 'hello':
handshake = {}
handshake['command'] = 'hello'
protocols = message.protocols
protocols.append(
'http://livereload.com/protocols/2.x-remote-control'
)
handshake['protocols'] = protocols
handshake['serverName'] = 'livereload-tornado'
self.send_message(handshake)
if message.command == 'info' and 'url' in message:
logging.info('Browser Connected: %s' % message.url)
LiveReloadHandler.waiters.add(self)
if not LiveReloadHandler._last_reload_time:
if os.path.exists('Guardfile'):
logging.info('Reading Guardfile')
execfile('Guardfile', {})
else:
logging.info('No Guardfile')
Task.add(os.getcwd())
LiveReloadHandler._last_reload_time = time.time()
logging.info('Start watching changes')
if not Task.start(self.watch_tasks):
ioloop.PeriodicCallback(self.poll_tasks, 800).start()
class IndexHandler(RequestHandler):
def get(self, path='/'):
abspath = os.path.join(os.path.abspath(ROOT), path.lstrip('/'))
mime_type, encoding = mimetypes.guess_type(abspath)
if not mime_type:
mime_type = 'text/html'
self.mime_type = mime_type
self.set_header('Content-Type', mime_type)
self.read_path(abspath)
def inject_livereload(self):
if self.mime_type != 'text/html':
return
ua = self.request.headers.get('User-Agent', 'bot').lower()
if 'msie' not in ua:
self.write('<script src="/livereload.js"></script>')
def read_path(self, abspath):
filepath = abspath
if os.path.isdir(filepath):
filepath = os.path.join(abspath, 'index.html')
if not os.path.exists(filepath):
self.create_index(abspath)
return
elif not os.path.exists(abspath):
filepath = abspath + '.html'
if os.path.exists(filepath):
if self.mime_type == 'text/html':
f = open(filepath)
data = f.read()
f.close()
before, after = data.split('</head>')
self.write(before)
self.inject_livereload()
self.write('</head>')
self.write(after)
else:
f = open(filepath, 'rb')
data = f.read()
f.close()
self.write(data)
hasher = hashlib.sha1()
hasher.update(data)
self.set_header('Etag', '"%s"' % hasher.hexdigest())
return
self.send_error(404)
return
def create_index(self, root):
self.inject_livereload()
files = os.listdir(root)
self.write('<ul>')
for f in files:
path = os.path.join(root, f)
self.write('<li>')
if os.path.isdir(path):
self.write('<a href="%s/">%s</a>' % (f, f))
else:
self.write('<a href="%s">%s</a>' % (f, f))
self.write('</li>')
self.write('</ul>')
class LiveReloadJSHandler(RequestHandler):
def get(self):
f = open(LIVERELOAD)
self.set_header('Content-Type', 'application/javascript')
for line in f:
if '{{port}}' in line:
line = line.replace('{{port}}', str(PORT))
self.write(line)
f.close()
handlers = [
(r'/livereload', LiveReloadHandler),
(r'/livereload.js', LiveReloadJSHandler),
(r'(.*)', IndexHandler),
]
def start(port=35729, root='.', autoraise=False):
global PORT
PORT = port
global ROOT
if root is None:
root = '.'
ROOT = root
logging.getLogger().setLevel(logging.INFO)
enable_pretty_logging()
app = Application(handlers=handlers)
app.listen(port)
print('Serving path %s on 127.0.0.1:%s' % (root, port))
if autoraise:
webbrowser.open(
'http://127.0.0.1:%s' % port, new=2, autoraise=True
)
try:
ioloop.IOLoop.instance().start()
except KeyboardInterrupt:
print('Shutting down...')
if __name__ == '__main__':
start(8000)
|